The present invention relates to an endoscope sterilization device and an endoscope sterilization system.
In the medical field, endoscopy is performed in which an insertion portion of an endoscope is inserted into a subject and then observation is performed. It is known that such an endoscope is hung and held by means of a hanger in a standby state before observation or the like. In addition, in many cases, a hanger that holds an endoscope is provided on an endoscope cart on which the endoscope, a processor device, a light source device, and the like are placed to be transported.
Described in JP1993-95888A (JP-H5-95888A) is an endoscope cart provided with a hanger that holds an endoscope. The endoscope cart includes a hanger cover that covers the hanger, a heating unit that increases the temperature of the vicinity of the endoscope held by the hanger, and the like. The above-described configuration is to keep the endoscope clean. In addition, in the case of the endoscope cart described in JP1993-95888A (JP-H5-95888A), a sterilization lamp is disposed in the hanger cover so that growth of bacteria in the hanger cover is suppressed.
In the case of an endoscope cart described in JP1998-262902A (JP-H10-262902A), a sanitary case is attached to a side surface of an endoscope cart main body. A hanger, a support that supports the hanger, and a sterilization lamp are provided in the sanitary case. The support includes an irradiation window, and the sterilization lamp is attached inside the support. Through the irradiation window, the endoscope hung on the hanger is irradiated with ultraviolet rays from the sterilization lamp turned on, so that the endoscope is sterilized.
In the medical field, since it is desired to take additional measures to prevent an infectious disease and an insertion portion of an endoscope is inserted into a subject to perform observation, sterilization with respect to bacteria such as viruses is important. Particularly, performing the sterilization immediately before the insertion portion is inserted into the subject is required. However, even in a case where a sterilization lamp is provided in a hanger cover as in the case of the endoscope cart described in JP1993-95888A (JP-H5-95888A), a sterilization effect is exhibited mainly for the hanger cover with sterilization of the insertion portion of the endoscope being not taken into account.
Meanwhile, in the case of the endoscope cart described in JP1998-262902A (JP-H10-262902A), the sterilization lamp is attached inside the support that supports the hanger. However, a position where the ultraviolet rays collide with the endoscope and the amount of irradiation vary depending on the way in which the endoscope is hung on the hanger and thus a high sterilization effect cannot be achieved for the insertion portion of the endoscope. That is, in the case of the endoscope carts described in JP1993-95888A (JP-H5-95888A) and JP1998-262902A (JP-H10-262902A), sterilizing the insertion portion immediately before the insertion portion is inserted into the subject has not been taken into account.
An object of the present invention is to provide an endoscope sterilization device and an endoscope sterilization system with which it is possible to achieve a high sterilization effect with respect to an insertion portion of an endoscope.
An endoscope sterilization device according to an aspect of the present invention is an endoscope sterilization device that irradiates an insertion portion of an endoscope with light for sterilization and that includes an accommodation portion and a sterilization light source. The accommodation portion has a bottomed tubular shape including an opening portion, a peripheral surface portion, and a bottom surface portion and at least a portion of the insertion portion is insertable into the accommodation portion through the opening portion. The sterilization light source is provided in the accommodation portion and irradiates the insertion portion inserted into the accommodation portion with the light for sterilization.
It is preferable that the sterilization light source is provided on the bottom surface portion or on the peripheral surface portion. It is preferable that a reflective material is provided on at least one of the bottom surface portion or the peripheral surface portion.
It is preferable that the light with which the sterilization light source performs the irradiation is ultraviolet rays of which a central wavelength is 222 nm. It is preferable that the sterilization light source is an excimer lamp or an LED.
It is preferable that the endoscope sterilization device further includes a lid member that constitutes at least a portion of the bottom surface portion or the peripheral surface portion and the lid member is movable between a closing position at which an inside of the accommodation portion is covered and an opening position at which the inside of the accommodation portion is exposed. It is preferable that the lid member is attachably and detachably separated from the accommodation portion.
It is preferable that the endoscope sterilization device further includes an insertion amount detection unit that detects an amount of insertion of the insertion portion into the accommodation portion. It is preferable that the endoscope sterilization device further includes an insertion portion holding portion that holds the insertion portion inserted into the accommodation portion.
An endoscope sterilization system according to another aspect of the present invention is an endoscope sterilization system in which an insertion portion of an endoscope is irradiated with light for sterilization, the endoscope sterilization system including: an endoscope holding device that is provided with a hanger holding an operation portion of the endoscope, the operation portion being consecutively connected to the insertion portion; and the above-described endoscope sterilization device.
It is preferable that the endoscope holding device is an endoscope stand or an endoscope cart.
It is preferable that the opening portion is open in a direction intersecting a hanging direction in which the insertion portion hangs down because of a weight thereof in a case where the operation portion is held by the hanger.
It is preferable that the endoscope sterilization system further includes an attachment and detachment mechanism that makes the endoscope sterilization device and the endoscope holding device attachable to each other and detachable from each other.
An endoscope sterilization system according to still another aspect of the present invention is an endoscope sterilization system in which an insertion portion of an endoscope is irradiated with light for sterilization, the endoscope sterilization system including an endoscope holding device and an endoscope sterilization device. The endoscope holding device is provided with a hanger holding an operation portion of the endoscope, the operation portion being consecutively connected to the insertion portion. The endoscope sterilization device includes a gutter-shaped accommodation portion and a sterilization light source, the accommodation portion being composed of at least a peripheral surface portion that faces an outer peripheral surface of the insertion portion hanging down because of a weight thereof in a case where the operation portion is held by the hanger and the sterilization light source irradiating the insertion portion accommodated in the accommodation portion with the light for sterilization.
An endoscope sterilization device according to still another aspect of the present invention is an endoscope sterilization device that irradiates an insertion portion of an endoscope with light for sterilization and that includes an insertion part and a sterilization light source. The insertion part includes a peripheral surface portion facing the insertion portion and the insertion portion is insertable into the insertion part. The sterilization light source irradiates the insertion portion inserted into the insertion part with the light for sterilization.
An endoscope sterilization system according to still another aspect of the present invention is an endoscope sterilization system in which an insertion portion of an endoscope is irradiated with light for sterilization, the endoscope sterilization system including an endoscope holding device, the above-described endoscope sterilization device, and a slide mechanism. The endoscope holding device is provided with a hanger holding an operation portion of the endoscope, the operation portion being consecutively connected to the insertion portion. The slide mechanism holds the endoscope sterilization device to be slidable along a hanging direction in which the insertion portion hangs down because of a weight thereof in a case where the operation portion is held by the hanger.
It is preferable that the slide mechanism includes a speed attenuation mechanism that attenuates a speed of movement of the endoscope sterilization device. It is preferable that the endoscope holding device is an endoscope stand or an endoscope cart.
It is preferable that the endoscope sterilization device further includes a grip portion that is integrally provided with the insertion part. It is preferable that the endoscope sterilization device further includes a cover member that is provided to be attachable to and detachable from the insertion part, and, in a case where the cover member and the insertion part are integrated with each other, the cover member and the insertion part constitute an accommodation portion that has a bottomed tubular shape including an opening portion, a peripheral surface portion, and a bottom surface portion and into which at least a portion of the insertion portion is insertable through the opening portion.
According to the aspects of the present invention, it is possible to achieve a high sterilization effect with respect to an insertion portion of an endoscope.
As shown in
The endoscope 12 includes a soft portion 12a, an operation portion 12b consecutively connected to a proximal end portion of the soft portion 12a, a bendable portion 12c (refer to FIG. 2) provided on a distal end side of the soft portion 12a, and a distal end portion 12d (refer to
The endoscope sterilization device 18 and the endoscope cart 20 constitute an endoscope sterilization system in the scope of the claims. The endoscope cart 20 includes a frame pedestal portion 21, four casters 22, columns 23 and 24, a top plate 26, shelf plates 27 and 28, a stand 29, and two hangers 30. The frame pedestal portion 21 is formed in an approximately rectangular shape and the casters 22 are provided at four corners thereof. The columns 23 and 24 are columnar members that are erected to extend upward from both of side end portions of the frame pedestal portion 21. The top plate 26 is formed in an approximately rectangular shape and is disposed at upper ends of the columns 23 and 24. Both of side end portions of the top plate 26 are fixed to inner sides of upper end portions of the columns 23 and 24.
The shelf plates 27 and 28 are each formed in an approximately rectangular shape and are fixed to inner sides of intermediate portions of the columns 23 and 24. The shelf plates 27 and 28 partition a space between the frame pedestal portion 21 and the top plate 26. Each caster 22 is provided with a stop lever 22a for restriction of rotation of the caster 22. The rotation of the caster 22 is restricted in a case where the stop lever 22a is in a lowered state and the rotation of the caster 22 is allowed in a case where the stop lever 22a is in a raised state.
The top plate 26 and the shelf plates 27 and 28 are panels with upper surfaces on which an instrument for an endoscope or the like is to be placed and in an example shown in
A front portion of the top plate 26 is provided with a handle 26a. A user can easily move the endoscope cart 20 while holding the handle 26a with a hand. A lower surface of the top plate 26 is provided with a drawer portion 26b. A keyboard or the like that is used for input to the processor device 15 or the like is stored in the drawer portion 26b. The display 16 is fixed to the stand 29 attached to an upper end of the column 24 on the left side, and is connected to the processor device 15 via a wiring line in the stand 29 and the column 24.
The hangers 30 are attached to an upper end of the column 23 on the right side via a hanger stand 31. The hanger stand 31 is composed of an L-shaped stand member 31a and a linear stand member 31b. One end portion of the stand member 31a is rotatably attached to the column 23. The hangers 30 are fixed to the stand member 31b. The hangers 30 hold the operation portion 12b of the endoscope 12 as will be described later. The stand member 31b is rotatably connected to the other end portion of the stand member 3 la. Accordingly, it is possible to adjust the positions of the hangers 30 and the endoscope 12 held by the hangers 30 by rotating the stand members 31a and 31b with respect to the column 23.
Each hanger 30 includes a notch or a groove, and the endoscope 12 can be hung on the hanger 30 with the operation portion 12b of the endoscope 12 being held at the notch or the groove. In a case where the operation portion 12b is held by the hanger 30, a hanging direction in which the soft portion 12a hangs down is parallel to a vertical direction Z, the soft portion 12a hanging down because of the weight thereof. The position of the hanger 30 is adjusted such that the distal end portion 12d does not come into contact with a floor surface in a case where the endoscope 12 is hung. The number of hangers 30 is not limited to two and an appropriate number of hangers 30 are provided in accordance with the purpose of use of the endoscope 12 and the dimensions of the endoscope cart 20 and the hanger stand 31.
As shown in
The housing 41 is formed in a bottomed tubular shape including an opening portion 41A, a peripheral surface portion 41B, and a rear surface portion 41C. The peripheral surface portion 41B is formed in a quadrangular tubular shape to constitute upper and lower surfaces and right and left surfaces of the housing 41. The rear surface portion 41C closes a rear end of the peripheral surface portion 41B. The rear surface portion 41C corresponds to a bottom surface portion in the scope of the claims.
A space inside the housing 41 that is surrounded by the peripheral surface portion 41B and the rear surface portion 41C is a sterilization space 41D, which is a space in which irradiation with ultraviolet rays for sterilization (which will be described later) is performed. The sterilization space 41D is formed to have dimensions larger than at least the outer diameter and the axial length of the distal end portion 12d, and can accommodate the distal end portion 12d. The opening portion 41A is a circular through-hole that is positioned in a front surface of the peripheral surface portion 41B and that has an inner diameter larger than at least the outer diameter of the distal end portion 12d. A direction in which the opening portion 41A is open, that is, a direction parallel to a central axis CL (refer to
The sterilization light source 42 is provided on the rear surface portion 41C of the housing 41. As the sterilization light source 42, an ultraviolet ray source is used. The sterilization light source 42 is any of an excimer lamp or a light emitting diode (LED) for ultraviolet rays. In addition, the excimer lamp is a discharge lamp that emits light from an excimer formed of a rare gas atom or a rare gas atom and a halogen atom by using a feature that a large number of short-time dielectric barrier discharges occur and there are a two-layer cylindrical type and a flat plate type as the structure thereof. As the sterilization light source 42, for example, a flat plate type excimer lamp is used.
The excimer lamp preferably emits first ultraviolet rays having a peak wavelength of 222 nm (±10 nm) and a wavelength range of 200 nm to 280 nm, and more preferably emits the first ultraviolet rays having a wavelength range of 200 nm to 230 nm. The transmittance of the first ultraviolet rays with respect to a living body is lower than the transmittance of ultraviolet rays (specific ultraviolet rays) at a wavelength of 254 nm (at which the intensity of light is high) with respect to a living body. For example, the transmittance of the first ultraviolet rays with respect to a cornea of an eye (the ratio of light absorbed by the cornea to light incident on the cornea) is 0.01 and the transmittance of the specific ultraviolet rays with respect to the cornea is 30%. Therefore, the first ultraviolet rays have an ability for sterilization and inactivation of viruses, which is inherent in ultraviolet rays, while being safe for the skin and eyes of humans and animals.
It is preferable that the LED for ultraviolet rays emits second ultraviolet rays, which are deep ultraviolet rays having a wavelength range of 300 nm or less, as ultraviolet rays. Since the second ultraviolet rays have a function of destroying genetic information of a virus or a bacterium, the second ultraviolet rays have a sterilization effect on water, air, or the like. For example, the second ultraviolet rays have a high sterilization effect against the human coronavirus (HCoV-229E), as a virus. In addition, it is preferable that the LED for ultraviolet rays has a function such as a waterproofing function or a heat radiation function. The influence of the LED for ultraviolet rays on the environment is smaller than that of a mercury lamp.
The sterilization light source 42 is exposed at an innermost surface in the sterilization space 41D. The sterilization light source 42 includes an optical member (not shown) and diffuses ultraviolet rays to irradiate the sterilization space 41D with the ultraviolet rays. The ultraviolet rays can be diffused such that the range of irradiation covers at least all of the surfaces of the distal end portion 12d.
The sterilization light sources 43 are provided on the peripheral surface portion 41B of the housing 41. In the example shown in
As shown in
Note that, the way in which the sterilization light source 42 is controlled by the light source control unit 44 is not limited to the above-described way. For example, the irradiation with ultraviolet rays may be stopped even before the predetermined time elapses in a case where a predetermined condition is satisfied. Regarding the predetermined condition herein, for example, an optical or physical sensor that detects the state of insertion of the insertion portion into the housing 41 is provided in the endoscope sterilization device 18 and the light source control unit 44 determines that the predetermined condition is satisfied and stops the irradiation with the ultraviolet rays in a case where the insertion portion is removed from the housing 41.
In addition, regarding the way in which the sterilization light source 42 is controlled by the light source control unit 44, in a case where the actual irradiation time is shorter than a setting time set in advance in a case where the irradiation with the ultraviolet rays is stopped once because the above-described predetermined condition is satisfied before the predetermined time elapses, control is performed such that a user is notified to that effect. Then, in a case where the predetermined condition is dissatisfied after the notification, the light source control unit 44 causes the sterilization light source 42 to restart the irradiation with the ultraviolet rays. The meaning of “a case where the predetermined condition is dissatisfied” is, for example, a case where it is detected that the insertion portion has been inserted into the housing 41 again. Note that as a method of notifying the user that the irradiation time is short, for example, a method of outputting a voice or changing what an indicator displays is used.
The action of the above-described configuration will be described. Before observation is performed by means of the endoscope 12, the operation portion 12b of the endoscope 12 after being cleaned is held by the hanger 30. In a case where the operation portion 12b is held by the hanger 30, the soft portion 12a enters a state of hanging down because of the weight thereof. A doctor or a medical staff, who is a user, operates the power switch 45 of the endoscope sterilization device 18 to turn on the power. Then, the distal end portion 12d is inserted into the housing 41 (that is, the sterilization space 41D) through the opening portion 41A. At least a portion of the insertion portion including the distal end portion 12d is irradiated with ultraviolet rays from the sterilization light sources 42 and 43. The distal end portion 12d is reliably sterilized by being irradiated with the ultraviolet rays, and thus a high sterilization effect can be achieved.
In addition, since ultraviolet rays having a wavelength range of 200 nm to 280 nm are used as the ultraviolet rays from the sterilization light sources 42 and 43 with which at least a portion of the insertion portion is irradiated, sterilization can be performed more reliably.
In the first embodiment described above, an endoscope sterilization device that is placed on the endoscope cart 20 has been described as an example of the endoscope sterilization device 18. However, the present invention is not limited thereto and in a second embodiment which will be described below, an endoscope sterilization device that is attached to the endoscope cart 20 will be described. The configuration of the endoscope cart 20 is the same as that of the first embodiment and thus the description thereof will be omitted.
As shown in
The endoscope sterilization device 50 includes a housing 51 as an accommodation portion, sterilization light sources 52 and 53, a light source control unit (not shown), and a power switch 54. The endoscope sterilization device 50 sterilizes at least a portion of the insertion portion of the endoscope 12. In the present embodiment, the endoscope sterilization device 50 mainly sterilizes the distal end portion 12d. In addition, the housing 51 includes a space in which a plurality of the distal end portions 12d can be accommodated and in an example shown in
As shown in
A space inside the housing 51 that is surrounded by the peripheral surface portion 51B and the bottom surface portion 51C is a sterilization space 51D, which is a space in which irradiation with ultraviolet rays for sterilization is performed. The sterilization space 51D is formed to have dimensions larger than at least the outer diameter and the axial length of the distal end portion 12d, and can accommodate the plurality of distal end portions 12d. The opening portion 51A is a rectangular through-hole that is positioned in an upper surface of the peripheral surface portion 51B and through which the plurality of distal end portions 12d pass. A direction in which the opening portion 51A is open is parallel to the vertical direction Z, which is the hanging direction of the soft portion 12a. Accordingly, the distal end portions 12d can be inserted into the sterilization space 51D from the outside of the housing 51 through the opening portion 51A. The power switch 54 is provided in the vicinity of the opening portion 51A.
The sterilization light sources 52 are provided on the bottom surface portion 51C of the housing 51. As the sterilization light sources 52, ultraviolet ray sources are used. The sterilization light sources 52 are exposed at a lowermost surface in the sterilization space 51D. The sterilization light sources 52 each include an optical member (not shown) and diffuse ultraviolet rays to irradiate the sterilization space 51D with the ultraviolet rays. The ultraviolet rays can be diffused such that the range of irradiation covers at least all of the surfaces of the distal end portion 12d. In an example shown in
The sterilization light sources 53 are provided on the peripheral surface portion 51B of the housing 51. The sterilization light sources 53 are long sterilization light sources provided on front and rear surfaces and right and left surfaces in the sterilization space 51D, and are disposed to be parallel with the vertical direction Z. Note that as the sterilization light sources 52 and 53, the same ultraviolet ray sources as the above-described sterilization light sources 42 and 43 in the first embodiment are used. However, it is preferable that flat plate-type excimer lamps are used as the sterilization light sources 52 and cylindrical type excimer lamps are used as the sterilization light sources 53.
The sterilization light sources 52 and 53 are controlled by the light source control unit. The light source control unit of the present embodiment performs the same control as the light source control unit 44 of the first embodiment, and the sterilization light sources 52 and 53 automatically stop irradiation with ultraviolet rays in a case where a predetermined time (several seconds to several minutes) elapses. The way in which the sterilization light sources 52 and 53 are controlled by the light source control unit is not limited thereto. For example, a motion sensor or the like that detects the presence or absence of a human in the vicinity of the housing 51 may be provided in the endoscope sterilization device 50 or the endoscope cart 20, so that the sterilization light sources 52 and 53 are controlled to start the irradiation with the ultraviolet rays in a case where it is detected that a human is present in the vicinity of the housing 51 and the sterilization light sources 52 and 53 are controlled to stop the irradiation with the ultraviolet rays in a case where it is detected that a human is not present in the vicinity of the housing 51.
In addition, regarding the way in which the sterilization light sources 52 and 53 are controlled by the light source control unit, the irradiation with the ultraviolet rays is stopped in a case where a predetermined condition is satisfied even before a predetermined time elapses. Alternately, in a case where the actual irradiation time is shorter than a setting time set in advance in a case where the irradiation with the ultraviolet rays is stopped once because the predetermined condition is satisfied before the predetermined time elapses, control is performed such that a user is notified to that effect or the like. Note that, regarding a case where the predetermined condition is satisfied, the light source control unit may determine that the predetermined condition is satisfied and stop the irradiation with the ultraviolet rays in a case where the insertion portion is removed from the housing 51. Alternately, a motion sensor may be provided in the endoscope sterilization device 50 or the endoscope cart 20 and the light source control unit may determine that the predetermined condition is satisfied and stop the irradiation with the ultraviolet rays in a case where it is detected that a human is not present in the vicinity of the housing 51.
The action of the above-described configuration will be described. In a case where the operation portion 12b of the endoscope 12 is held by the hanger 30 before observation is performed by means of the endoscope 12, as described above, the endoscope sterilization device 50 is disposed in the hanging direction in which the soft portion 12a hangs down because of the weight thereof. Accordingly, in a case where the operation portion 12b is held by the hanger 30, the endoscope sterilization device 50 is positioned in the vicinity of the distal end portion 12d. Therefore, a doctor or a medical staff, who is a user, can easily insert the distal end portion 12d into the housing 51, (that is, the sterilization space 51D) through the opening portion 51A. In addition, the doctor or the medical staff operates the power switch 54 of the endoscope sterilization device 50 to turn on the power. As with the above-described first embodiment, the distal end portion 12d is reliably sterilized by being irradiated with the ultraviolet rays, and thus a high sterilization effect can be achieved.
In a third embodiment which will be described below, a lid member that constitutes at least a portion of a bottom surface portion or a peripheral surface portion may be provided in addition to the configurations of the above-described first and second embodiments and the lid member may be movable such that the inside of an accommodation portion is exposed. An endoscope sterilization device 60 of the present embodiment shown in
The endoscope sterilization device 60 includes a housing 61 as an accommodation portion, sterilization light sources 62 and 63, a light source control unit (not shown), a lid member 64, and a power switch 65. The endoscope sterilization device 60 sterilizes at least a portion of the insertion portion of the endoscope 12 and mainly sterilizes the distal end portion 12d. In addition, the housing 61 includes a space in which a plurality of the distal end portions 12d can be accommodated.
The housing 61 is formed in a bottomed tubular shape including an opening portion 61A, a peripheral surface portion 61B, and a bottom surface portion 61C. The peripheral surface portion 61B is formed in a cylindrical shape extending in the vertical direction Z. The bottom surface portion 61C closes a lower end of the peripheral surface portion 61B. A space inside the housing 61 that is surrounded by the peripheral surface portion 61B and the bottom surface portion 61C is a sterilization space 61D, which is a space in which irradiation with ultraviolet rays for sterilization is performed. The sterilization space 61D is formed to have dimensions larger than at least the outer diameter and the axial length of the distal end portion 12d. The opening portion 61A is a circular through-hole that is positioned in an upper surface of the peripheral surface portion 61B and through which a plurality of the soft portions 12a pass. Accordingly, the soft portions 12a can be inserted into the sterilization space 61D from the outside of the housing 61 through the opening portion 61A. The power switch 65 is provided in the vicinity of the opening portion 61A.
The sterilization light source 62 is provided on the bottom surface portion 61C of the housing 61. As the sterilization light source 62, an ultraviolet ray source is used. The sterilization light source 62 is exposed at a lowermost surface in the sterilization space 61D. The sterilization light source 62 includes an optical member (not shown) and diffuses ultraviolet rays to irradiate the sterilization space 61D with the ultraviolet rays. The ultraviolet rays can be diffused such that the range of irradiation covers at least all of the surfaces of the distal end portion 12d.
The sterilization light sources 63 are provided on the peripheral surface portion 61B of the housing 61. The sterilization light sources 63 are long sterilization light sources provided on an inner peripheral surface in the sterilization space 61D, and are disposed to be parallel with the vertical direction Z. Note that as will be described later, since the lid member 64 constitutes a portion of the peripheral surface portion 61B, a portion of a plurality of the sterilization light sources 63 is provided on an inner peripheral surface of the lid member 64. Note that as the sterilization light sources 62 and 63, the same ultraviolet ray sources as the above-described sterilization light sources 42, 43, 52, and 53 in the first embodiment are used. However, it is preferable that a flat plate-type excimer lamp is used as the sterilization light source 62 and cylindrical type excimer lamps are used as the sterilization light sources 63. The sterilization light sources 62 and 63 are controlled by the light source control unit. The light source control unit of the present embodiment performs the same control as the light source control unit 44 of the first embodiment, and the description thereof will be omitted.
The lid member 64 constitutes at least a portion of the peripheral surface portion 61B and is provided to be movable with respect to the housing 61. Specifically, the lid member 64 is connected to the housing 61 via a rotary shaft 64A such that the lid member 64 can move rotationally. The lid member 64 can move rotationally between a closing position (a position represented by two-dot chain lines) at which the sterilization space 61D of the housing 61 is covered and an opening position (a position represented by solid lines) at which the sterilization space 61D of the housing 61 is exposed. Accordingly, in addition to the effects of the first and second embodiments, in a case where the endoscope sterilization device 60 is to be cleaned, the inside of the housing 61 (that is, the sterilization space 61D) can be exposed with the lid member 64 moved to the opening position. Therefore, it is possible to easily clean the endoscope sterilization device 60.
In addition, a configuration in which the lid member 64 is attachably and detachably separated from the housing 61 may also be adopted. In this case, for example, a configuration may also be adopted in which a locking claw is provided on one of the housing 61 or the lid member 64, a locking hole is provided on the other of the housing 61 or the lid member 64, the housing 61 and the lid member 64 are integrated with each other with the locking claw and the locking hole locked, and the housing 61 and the lid member 64 are separated from each other with the locking claw and the locking hole unlocked.
Note that in the first to third embodiments, the sterilization light sources are provided on the peripheral surface portion and the bottom surface portion of the housings 41, 51, and 61, respectively. However, the present invention is not limited to this, and for example, a sterilization light source may be provided on only one of the peripheral surface portion or the bottom surface portion of the housings 41, 51, and 61 and a reflective material may be provided inside (at a position facing the sterilization spaces 41D, 51D, and 61D) the other of the peripheral surface portion or the bottom surface portion so that ultraviolet rays from the sterilization light source is reflected.
In addition, as a modification example, as shown in
The insertion portion holding portion 66 (refer to
In the case of application to the example shown in
The insertion amount detection unit 67 transmits, to the light source control unit of the endoscope sterilization device 50, the detected amount of insertion of the insertion portion of the endoscope 12, for example. The light source control unit of the endoscope sterilization device 50 controls the sterilization light sources 52 and 53 in accordance with the amount of insertion of the insertion portion that is detected by the insertion amount detection unit 67 such that the sterilization light sources 52 and 53 are controlled to start irradiation with ultraviolet rays in a case where the amount of insertion of the insertion portion into the housing 51 is equal to or larger than a certain value and the sterilization light sources 52 and 53 are controlled to stop the irradiation with the ultraviolet rays in a case where the amount of insertion of the insertion portion into the housing 51 is smaller than the certain value, for example.
Note that regarding examples shown in
In addition, in the modification example, the insertion portion holding portion 66 is disposed to match the position (the position of the soft portions 12a that is represented by the solid lines in
The endoscope sterilization device in each of the above-described embodiments is used separately from the endoscope cart 20 serving as an endoscope holding device or used in a state of being fixed to the endoscope cart 20 at all times. However, the present invention is not limited thereto and a portion of the endoscope sterilization device or the entire endoscope sterilization device may be attachable to and detachable from the endoscope cart 20. In an example shown in
The endoscope sterilization device 75 is attached to the column 23 of the endoscope cart 20 as with the endoscope sterilization device 50 in the second embodiment. The endoscope sterilization device 75 includes the housing 76 and a light source unit 77. As with the housing 51 of the endoscope sterilization device 50 in the second embodiment, the housing 76 is formed in a bottomed tubular shape including an opening portion 76A, a peripheral surface portion 76B, and a bottom surface portion 76C.
As shown in
In addition, the inner peripheral surface of the peripheral surface portion 76B is provided with a reflective material 76F. The reflective material 76F reflects ultraviolet rays from the sterilization light source 78, which will be described later. The configuration of the fitting opening portion 76D is not limited to the above-described configuration. The transmission window 76E may not be provided and the fitting opening portion 76D may be a through-hole that penetrates the peripheral surface portion 76B over an area from the outer peripheral surface to the inner peripheral surface.
The light source unit 77 includes the sterilization light source 78 and a fitting member 79 that holds the sterilization light source 78, and the light source unit 77 is fixed to the column 23. The fitting member 79 is formed to have a quadrangular cross section such that the outer shape thereof is fitted to the fitting opening portion 76D. The housing 76 can be attachably and detachably attached to the endoscope cart 20 with the fitting member 79 and the fitting opening portion 76D fitted to each other. In a case where the fitting opening portion 76D and the fitting member 79 are fitted to each other, the sterilization light source 78 is exposed to the inside of the housing 76 through the transmission window 76E. As the sterilization light source 78, the same ultraviolet ray source as the sterilization light sources 42 and 43 according to the first embodiment are used. Since the reflective material 76F reflects the ultraviolet rays from the sterilization light source 78, the entire region inside the housing 76 can be irradiated with the ultraviolet rays. Since the housing 76 is attachable to and detachable from the endoscope cart 20 as described above, the sterilization light source 78 is provided only on the endoscope cart 20 side. Therefore, it is possible to achieve reduction in cost. In addition, it is possible to easily clean the endoscope sterilization device 75.
Note that regarding the endoscope cart, a portion of the endoscope sterilization device is attachable to and detachable from the endoscope cart 20 in the examples shown in
In the first to third embodiments, the endoscope sterilization device and the endoscope sterilization system in which at least a portion of the soft portion 12a of the endoscope 12 is sterilized and the distal end portion 12d is mainly sterilized have been described as an example. However, the present invention is not limited thereto, and the target of sterilization may be the entire soft portion 12a. In a fourth embodiment which will be described below, an endoscope sterilization system will be described in which a slide mechanism is provided and an endoscope sterilization device is slid by means of the slide mechanism so that the entire soft portion 12a is sterilized.
As shown in
As shown in
The insertion part 82 is formed in a U shape and includes at least a peripheral surface portion 87 that faces the soft portion 12a. As described above, since the endoscope sterilization device 80 is disposed below the hangers 30, the soft portion 12a can be inserted into the insertion part 82 in a case where the operation portion 12b of the endoscope 12 is held by the hanger 30.
In the present embodiment, linear portions 87A of the peripheral surface portion 87, which face each other, are disposed to be parallel with the front-rear direction X of the endoscope cart 20. A space inside the insertion part 82 that is surrounded by the peripheral surface portion 87 is a sterilization space 87B, which is a space in which irradiation with ultraviolet rays for sterilization is performed by the sterilization light sources 83 and 84. Accordingly, in a case where the operation portion 12b is held by the hanger 30, the sterilization light sources 83 and 84 can irradiate, with ultraviolet rays for sterilization, at least a portion of the soft portion 12a hanging down because of the weight thereof and inserted into the insertion part 82. The sterilization space 87B is formed to have dimensions larger than at least the outer diameter and the axial length of the distal end portion 12d.
As the sterilization light source 83, an ultraviolet ray source is used. One or more sterilization light sources 83 are provided with respect to the peripheral surface portion 87 and are exposed at an innermost surface in the sterilization space 87B. The sterilization light source 83 includes an optical member (not shown) and diffuses ultraviolet rays to irradiate the sterilization space 87B with the ultraviolet rays.
The sterilization light sources 84 are provided on the linear portions 87A of the peripheral surface portion 87. The sterilization light sources 84 are long sterilization light sources provided on surfaces in the sterilization space 87B that face each other, and are disposed to be parallel with the front-rear direction X. Note that as the sterilization light sources 83 and 84, the same ultraviolet ray sources as the above-described sterilization light sources 42 and 43 in the first embodiment are used. However, it is preferable that a flat plate-type excimer lamp is used as the sterilization light source 83 and cylindrical type excimer lamps are used as the sterilization light sources 84. The sterilization light sources 83 and 84 are controlled by the light source control unit. The light source control unit of the present embodiment performs the same control as the light source control unit 44 of the first embodiment, and the description thereof will be omitted.
The attachment piece 85 is integrally provided with the insertion part 82. The attachment piece 85 is formed in a plate-like shape extending in the front-rear direction X. The attachment piece 85 is integrally provided with fitting members 88 (refer to
The slide mechanism 81 includes the fitting members 88, slide grooves 89, and a speed attenuation mechanism 91. The slide grooves 89 are linear grooves that are formed on a side surface of the column 23 and that extend in the vertical direction Z. The fitting members 88 are disposed at positions on the attachment piece 85 to face the slide grooves 89. Regarding the fitting members 88, fitting portions 88A formed to match the width of the slide grooves 89 and retaining portions 88B formed to have a width larger than the width of the slide grooves 89 are integrally formed with each other. The retaining portions 88B prevent the fitting members 88 from falling off the slide grooves 89.
As shown in
The speed attenuation mechanism 91 attenuates a movement speed at which the endoscope sterilization device 80 is slid. Specifically, the speed attenuation mechanism 91 is composed of, for example, a gas spring and is disposed between the endoscope sterilization device 80 and the column 23. Note that, in
As is well known, a gas spring is a spring that uses a reaction force based on elasticity in the case of compression of a gas sealed in a cylinder. The gas spring is attached in a state of being contracted in a contraction direction in which the sealed gas is compressed, and always generates a reaction force with respect to the endoscope sterilization device 80 in a direction opposite to the direction of a downward movement caused by the weight of the endoscope sterilization device 80 (that is, in a direction in which the endoscope sterilization device 80 is raised). Note that the configuration of the speed attenuation mechanism 91 is not limited to the above-described configuration as long as the speed attenuation mechanism 91 attenuates the speed of the sliding movement of the endoscope sterilization device 80. For example, a member having a high frictional resistance may be used for any of the slide grooves 89 or the fitting members 88 and the speed attenuation mechanism 91 may attenuate the speed of the sliding movement of the endoscope sterilization device 80 by means of a frictional force generated between the slide grooves 89 and the fitting members 88.
The action of the above-described configuration will be described. In a case where the operation portion 12b of the endoscope 12 is held by the hanger 30 before observation is performed by means of the endoscope 12, the soft portion 12a can be inserted into the insertion part 82 as described above. In addition, a doctor or a medical staff, who is a user, operates the power switch 86 of the endoscope sterilization device 80 to turn on the power. In addition, the sterilization light sources 83 and 84 can irradiate, with ultraviolet rays for sterilization, at least a portion of the soft portion 12a inserted into the insertion part 82. The doctor or the medical staff holds the endoscope sterilization device 80 and releases the endoscope sterilization device 80 after sliding the endoscope sterilization device 80 up to upper ends of the slide grooves 89, so that the endoscope sterilization device is gradually lowered because of the weight thereof. In a case where the endoscope sterilization device 80 is slid, the soft portion 12a is irradiated with ultraviolet rays for sterilization by the sterilization light sources 83 and 84, so that the entire soft portion 12a can be sterilized. The entire soft portion 12a is reliably sterilized by being irradiated with the ultraviolet rays, and thus a high sterilization effect can be achieved.
Note that in the fourth embodiment, a slide mechanism with which a user manually slides the endoscope sterilization device 80 has been described as an example of the slide mechanism 81. However, the present invention is not limited thereto and for example, a slide mechanism that includes a motor as a drive source and a transmission mechanism converting a rotational motion of the motor to a linear motion and that automatically slides the endoscope sterilization device 80 may also be used instead of the above-described configuration.
In the fourth embodiment described above, the endoscope sterilization system in which the endoscope sterilization device is slid by means of the slide mechanism so that the entire soft portion 12a of the endoscope 12 is sterilized has been described as an example. However, the present invention is not limited thereto and a user may grip the endoscope sterilization device to sterilize the entire soft portion 12a of the endoscope 12. In a fifth embodiment which will be described below, an endoscope sterilization device integrally provided with a grip portion to be gripped by a user and an endoscope sterilization system will be described.
As shown in
As shown in
The peripheral surface portion 106 includes linear portions 106A that face each other. A space inside the insertion part 101 that is surrounded by the peripheral surface portion 106 is a sterilization space 106B, which is a space in which irradiation with ultraviolet rays for sterilization is performed by the sterilization light sources 102 and 103. Accordingly, in a case where the operation portion 12b is held by the hanger 30 and the insertion part 101 is disposed in the vicinity (a position facing the outer peripheral surface of the soft portion 12a) of the soft portion 12a, the sterilization light sources 102 and 103 can irradiate, with ultraviolet rays for sterilization, at least a portion of the soft portion 12a hanging down because of the weight thereof and inserted into the insertion part 101. The sterilization space 106B is formed to have dimensions larger than at least the outer diameter and the axial length of the distal end portion 12d.
As the sterilization light source 102, an ultraviolet ray source is used. One or more sterilization light sources 102 are provided with respect to the peripheral surface portion 106 and are exposed at an innermost surface in the sterilization space 106B. The sterilization light source 102 includes an optical member (not shown) and diffuses ultraviolet rays to irradiate the sterilization space 106B with the ultraviolet rays.
The sterilization light sources 103 are provided on the linear portions 106A of the peripheral surface portion 106. The sterilization light sources 103 are long sterilization light sources provided on surfaces in the sterilization space 106B that face each other. Note that as the sterilization light sources 102 and 103, the same ultraviolet ray sources as the above-described sterilization light sources 42 and 43 in the first embodiment are used. However, it is preferable that a flat plate-type excimer lamp is used as the sterilization light source 102 and cylindrical type excimer lamps are used as the sterilization light sources 103. The sterilization light sources 102 and 103 are controlled by the light source control unit. The light source control unit of the present embodiment performs the same control as the light source control unit 44 of the first embodiment, and the description thereof will be omitted.
The grip portion 104 is integrally provided with the insertion part 82. The grip portion 104 is formed in a plate-like shape. The grip portion 104 is formed to have a size and a thickness to be easily gripped by a hand of an ordinary person. In addition, the grip portion 104 includes a recess portion 104A that is recessed in comparison with the surrounding area and a user can easily hook a hand on the recess portion 104A. In addition, the grip portion 104 is provided with the power switch 105.
The action of the above-described configuration will be described. Before observation is performed by means of the endoscope 12, the operation portion 12b of the endoscope 12 is held by the hanger 30. A doctor or a medical staff, who is a user, holds the grip portion 104 (held by a doctor D in
In the fifth embodiment described above, the endoscope sterilization device that is manually moved and used only for sterilization of the entire soft portion 12a has been described as an example. However, the present invention is not limited thereto and an endoscope sterilization device that can switch between a mode in which the distal end portion 12d is inserted to be sterilized and a mode in which the endoscope sterilization device is manually moved so that the entire soft portion 12a is sterilized. In a sixth embodiment which will be described below, an endoscope sterilization device and an endoscope sterilization system, which can switch to a mode in which the distal end portion 12d is inserted to be sterilized in the case of an installation state and can switch to a mode in which the endoscope sterilization device is manually moved so that the entire soft portion 12a is sterilized in the case of a state of being gripped by a user, will be described.
As shown in
The cover member 112 is formed in a U-like shape corresponding to the peripheral surface portion 106 of the sterilization device main body 111, and an open portion of one cover member or the peripheral surface portion 106 is covered by the other cover member or the peripheral surface portion 106 so that an accommodation portion 113 (refer to
The accommodation portion 113 is formed in a bottomed tubular shape including an opening portion 113A, a peripheral surface portion 113B, and a rear surface portion 113C in a case where the cover member 112 and the insertion part 101 are integrated with each other. The peripheral surface portion 113B is formed in a quadrangular tubular shape to constitute upper and lower surfaces and right and left surfaces of the accommodation portion 113. The rear surface portion 113C closes a rear end of the peripheral surface portion 113B. The rear surface portion 113C corresponds to a bottom surface portion in the scope of the claims.
A space inside the accommodation portion 113 that is surrounded by the peripheral surface portion 113B and the rear surface portion 113C is the sterilization space 106B of the insertion part 101, which is a space in which irradiation with ultraviolet rays for sterilization is performed by the sterilization light sources 102 and 103 provided in the sterilization device main body 111. The sterilization space 106B is formed to have dimensions larger than at least the outer diameter and the axial length of the distal end portion 12d, and can accommodate the distal end portion 12d. The opening portion 113A is a circular through-hole that is positioned in a front surface of the peripheral surface portion 113B and that has an inner diameter larger than at least the outer diameter of the soft portion 12a. Through the opening portion 113A, at least a portion of the soft portion 12a can be inserted into the sterilization space 106B from the outside of the accommodation portion 113.
The action of the above-described configuration will be described. In a case where the cover member 112 and the insertion part 101 are integrated with each other, the endoscope sterilization device 110 can be used as an installation type endoscope sterilization device, which is used in a state of being placed on the endoscope cart 20 as with the endoscope sterilization device 18 in the first embodiment, since the endoscope sterilization device 110 includes the accommodation portion 113 and the sterilization light sources 102 and 103. That is, before observation is performed by means of the endoscope 12, the operation portion 12b of the endoscope 12 held by the hanger 30 and then a doctor or a medical staff, who is a user, operates the power switch 105 of the endoscope sterilization device 110 to turn on the power. Then, the distal end portion 12d is inserted into the accommodation portion 113 (that is, the sterilization space 106B) through the opening portion 113A. At least a portion of the soft portion 12a including the distal end portion 12d is irradiated with ultraviolet rays from the sterilization light sources 102 and 103. The distal end portion 12d is reliably sterilized by being irradiated with the ultraviolet rays, and thus a high sterilization effect can be achieved.
Meanwhile, in a case where the cover member 112 and the insertion part 101 are separated from each other, since the sterilization device main body 111 has the same configuration as the endoscope sterilization device 100 of the fifth embodiment, the doctor or the medical staff holds the grip portion 104 of the sterilization device main body 111 and in a case where the sterilization device main body 111 is manually moved, the soft portion 12a is irradiated with ultraviolet rays for sterilization by the sterilization light sources 102 and 103, so that the entire soft portion 12a can be sterilized.
As described above, with a simple operation of attaching and detaching the cover member 112, it is possible to switch between the mode in which the distal end portion 12d is inserted to be sterilized and the mode in which the endoscope sterilization device is manually moved so that the entire soft portion 12a is sterilized.
Note that in the fourth to sixth embodiments, the insertion parts 82 and 101 are provided with the plurality of sterilization light sources. However, the present invention is not limited thereto and a reflective material may be provided instead of a portion of the plurality of sterilization light sources so that the ultraviolet rays from the sterilization light sources are reflected by the reflective material. In addition, in the sixth embodiment, a reflective material may be provided inside the cover member 112 (at a position facing the sterilization space 106B).
In a modification example which will be described below, in addition to the configurations of the fifth and sixth embodiments, a switch to a mode used for sterilization of an instrument for an endoscope can be made. As shown in
As shown in
In the fourth to sixth embodiments, the endoscope sterilization device that is moved with respect to the soft portion 12a so that the entire soft portion 12a is sterilized and the endoscope sterilization system have been described as an example. However, the present invention is not limited thereto and the entire soft portion 12a may be covered so that the entire soft portion 12a is sterilized. In an endoscope sterilization system 120 of the present embodiment which is shown in
As shown in
In the present embodiment, two endoscope sterilization devices 121 and two hangers 122 are provided for one endoscope cart 123. However, the number of the endoscope sterilization devices 121 and the number of the hangers 122 are not limited to two and an appropriate number of hangers 30 are provided in accordance with the purpose of use of the endoscope 12 and the dimensions of the endoscope cart 123 and the hanger stand 31. The endoscope sterilization device 121 is positioned in the hanging direction in which the soft portion 12a hangs down because of the weight thereof in a case where the operation portion 12b is held by the hanger 122.
Note that, regarding the endoscope cart 123, the hanger 122 integrally provided with the endoscope sterilization devices 121 are attached to the column 23 on the right side and the same hangers 30 as those of the endoscope cart 20 in the first embodiment are attached to the column 24 on the left side via the hanger stand 31. Since the configuration of the endoscope cart 123 is the same as that of the endoscope cart 20 in the first embodiment in other respects, the same components will be given the same reference numerals and description thereof will be omitted.
As shown in
The peripheral surface portion 128 has a gutter-like shape including a groove 128A (see
The sterilization light sources 126 are disposed inside the groove 128A of the peripheral surface portion 128 along the vertical direction Z. The sterilization light sources 126 irradiate the soft portion 12a with light for sterilization. In addition, although a plurality of the sterilization light sources 126 are provided for one peripheral surface portion 128 in
The action of the above-described configuration will be described. As shown in
In addition, in the case of the endoscope 12 after being used, the operation portion 12b can be held by the hanger 30 attached to the column 24 on the left side. Since the hangers 30 are provided at positions separated from the endoscope sterilization devices 121 provided on the column 23 on the right side, dirt such as a body fluid does not adhere to the endoscope sterilization devices 121 and thus the endoscope sterilization devices 121 can be kept clean.
In the seventh embodiment, the entire endoscope sterilization device 121 is formed in a gutter-like shape. However, the present invention is not limited thereto and the endoscope sterilization device 121 may be formed to have a shape in which an upper portion has a gutter-like shape and a lower portion has a tubular shape as shown in
In each of the above-described embodiments or the modification examples thereof, the endoscope cart has been described as an example of an endoscope holding device. However, the present invention is not limited thereto and the endoscope holding device may be an endoscope stand provided with a hanger holding an operation portion of an endoscope. In addition, as the reflective material provided inside the accommodation portion in each of the above-described embodiments or the modification examples thereof, for example, a metal sheet of which a surface is formed to have a mirror-like shape, or a member of which a surface is plated is used.
In addition, although the endoscope 12 to be combined with the endoscope sterilization device or the endoscope sterilization system according to the embodiments of the present invention has not been specified in the above-described embodiments, the endoscope 12 may be any endoscope as long as an insertion portion is provided and may be a bronchoscope, an upper gastrointestinal tract endoscope, or a lower gastrointestinal tract endoscope, for example.
In each of the above-described embodiments, a hardware structure of a processing unit that performs various types of processing, such as the light source control unit, is various processors as described below. The various processors include a central processing unit (CPU), which is a general-purpose processor that executes software (a program) and functions as various processing units, a graphical processing unit (GPU), a programmable logic device (PLD) such as a field programmable gate array (FPGA), which is a processor of which the circuit configuration can be changed after being manufactured, and a dedicated electric circuit which is a processor having a circuit configuration exclusively designed for various processes.
One processing unit may be composed of one of these various processors or a combination of two or more processors of the same type or different types (for example, a combination of a plurality of FPGAs, a combination of a CPU and an FPGA, a combination of a CPU and a GPU, or the like). In addition, a plurality of processing units may be composed of one processor. As examples of a configuration in which a plurality of processing units are composed of one processor, firstly, there is a configuration in which one processor is composed of a combination of one or more CPUs and software and the processor functions as a plurality of processing units as represented by a computer such as a client, a server, or the like. Secondly, as represented by a system-on-chip (SoC), there is a configuration in which a processor that realizes, with one integrated circuit (IC) chip, the functions of the entire system including a plurality of processing units is used. As described above, various processing units are configured by using one or more of the above-described various processors as the hardware structure.
Furthermore, the hardware structure of the various processors is, more specifically, an electric circuit (circuitry) in which circuit elements such as semiconductor elements are combined with each other.
Number | Date | Country | Kind |
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2020-192469 | Nov 2020 | JP | national |
This application is a Continuation of PCT International Application No. PCT/JP2021/040074 filed on 29 Oct. 2021, which claims priority under 35 U.S.C § 119(a) to Japanese Patent Application No. 2020-192469 filed on 19 Nov. 2020. The above application is hereby expressly incorporated by reference, in its entirety, into the present application.
Number | Date | Country | |
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Parent | PCT/JP2021/040074 | Oct 2021 | US |
Child | 18319453 | US |