Conventionally, endoscope systems provided with an endoscope that picks up an image of an object inside a subject and an image processing apparatus that generates an observation image of the object picked up by the endoscope have been widely used in medical and industrial fields. For example, laparoscopic surgical operations, which conduct care and treatment without opening an abdominal cavity for the purpose of minimizing invasion to patients, are practiced in the medical field.
During a laparoscopic surgical operation, a gas feeding apparatus that supplies a feeding gas such as carbon dioxide into the abdominal cavity is used to secure a view of an endoscope and an operation space for a treatment instrument. The gas feeding apparatus is configured to control a decompression valve or a flow rate control valve, adjust the feeding gas to a safe pressure and flow rate, and supply the feeding gas into the abdominal cavity via a gas feeding tube.
The feeding gas is normally supplied to the gas feeding tube at the same temperature as the temperature in an operating room (e.g., 25° C.), but this temperature is a temperature which is lower by about 10° C. than the body temperature (e.g., 37° C.). Therefore, when the feeding gas at the same temperature as the temperature in the operating room is supplied into the body cavity via the gas feeding tube, this may cause a burden on the patient under operation and may induce hypothermia.
Thus, a heater may be housed in the gas feeding tube to heat the feeding gas to be supplied into the body cavity. A temperature sensor may be disposed in the gas feeding tube to determine the temperature of the feeding gas.
In such a configuration, a temperature sensor needs to be disposed in the gas feeding tube, which causes the overall cost of the gas feeding tube to increase. Furthermore, when a temperature sensor or a heater is disposed in the gas feeding tube, the gas feeding tube cannot be cleaned, and so the gas feeding tube needs to be a disposable type gas feeding tube. In this case, a new gas feeding tube is necessary for each procedure, causing a cost increase of the gas feeding tube to directly lead to a cost increase of the procedure.
The present disclosure relates to a gas feeding apparatus that supplies a feeding gas such as carbon dioxide into a body cavity or the like, a gas feeding control method, and a storage medium.
A gas feeding apparatus according to one aspect of the present disclosure includes first and second temperature sensors for measuring a temperature of an atmosphere that are disposed in a housing. The apparatus may also include a panel disposed so as to be adjacent to the first temperature sensor and the second temperature sensor, a protrusion protruding forward from the panel, a first opening provided in the panel in a vicinity of the first temperature sensor, and a second opening provided in the panel in a vicinity of the second temperature sensor. The first temperature sensor and the second temperature sensor are separated by a predetermined distance in a horizontal direction and disposed below the protrusion.
A gas feeding control method according to another aspect of the present disclosure acquires a first measurement result measured by a first temperature sensor, acquires a second measurement result measured by a second temperature sensor, calculates a temperature difference between the first measurement result and the second measurement result, and controls a heater or supply of feeding gas according to the calculated temperature difference.
A computer-readable non-transitory recording medium on which a gas feeding control program is stored may be provided according to a further aspect of the present disclosure. The program causes a computer to execute a process of acquiring a first measurement result measured by a first temperature sensor, a process of acquiring a second measurement result measured by a second temperature sensor, a process of calculating a temperature difference between the first measurement result and the second measurement result and a process of controlling a heater or a supply of feeding gas according to the calculated temperature difference.
Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.
As shown in
As shown in
A light source apparatus 3 and a processor 4 are connected to the endoscope 7. A monitor 5 is connected to the processor 4. The light source apparatus 3 guides light emitted from the semiconductor light source using a light guide member, converts a color, luminous intensity distribution or the like using an optical conversion member provided at a distal end of the light guide member and supplies illumination light to the endoscope 7. The processor 4 supplies a supply voltage to the endoscope 7, applies predetermined video signal processing to the image pickup signal picked up by the endoscope 7 and outputs a video signal to the monitor 5. Thus, an endoscope image (surgical image) obtained by the endoscope 7 is displayed on the monitor 5.
An electric knife output apparatus 2 is connected to the electric knife 8. The electric knife output apparatus 2 outputs a high-frequency current to the electric knife 8 to generate high-frequency electrical energy. By bringing an electrode at a distal end of the electric knife 8 into contact with tissue of an affected part of the patient 10, the high-frequency current outputted from the electric knife output apparatus 2 is intensively passed to the tissue of the affected part to generate Joule heat and perform dissection of the tissue of the affected part or hemostatic coagulation at a bleeding site.
A cylinder (not shown) filled with carbon dioxide (CO2 gas) is connected to the gas feeding apparatus 1 that feeds the feeding gas. Furthermore, one end of the gas feeding tube 6 is connected to the gas feeding apparatus 1. The other end of the gas feeding tube 6 is connected to the first trocar 9a punctured on the abdominal wall of the patient 10. That is, the gas feeding apparatus 1 is enabled to feed the feeding gas such as carbon dioxide into the abdominal cavity of the patient 10 via the gas feeding tube 6 and the first trocar 9a.
The aforementioned gas feeding apparatus 1, the electric knife output apparatus 2, the light source apparatus 3, the processor 4 and the monitor 5 are mounted, for example, on a movable trolley apparatus. Furthermore, the configuration of the surgical operation system is not limited to the configuration in
Next, the configuration of the gas feeding apparatus 1 of the present embodiment will be described using
As shown in
The two opening portions 15a and 15b are provided separated by a predetermined distance in the horizontal direction and below the gas feeding connector receiving part 14. Note that the gas feeding apparatus 1 is configured to include the two opening portions 15a and 15b and the two temperature sensors 21a and 21b, but without being limited to this, the gas feeding apparatus 1 may have a configuration including three or more opening portions and three or more temperature sensors.
A gas feeding tube connector 6a (see
Protrusion-shaped umbrella parts 16a and 16b are provided around the opening portions 15a and 15b so as to prevent a liquid from falling over the opening portions 15a and 15b, and the first and second temperature sensors 21a and 21b, which will be described later. Furthermore, slits 17a and 17b are provided from lower surface parts of the opening portions 15a and 15b toward the umbrella parts 16a and 16b disposed around. The slits 17a and 17b are slits to guide liquid films, which may be generated in the opening portions 15a and 15b, to the outside.
As shown in
The first temperature sensor 21a is provided on the proximal end side of the opening portion (first opening) 15a. A second temperature sensor 21b is provided on the proximal end side of the opening portion (second opening) 15b as shown in
The first temperature sensor 21a and the second temperature sensor 21b are configured to contact the atmosphere through the opening portion 15a and the opening portion 15b, and measure a room temperature. The measurement results measured by the first temperature sensor 21a and the second temperature sensor 21b are outputted to a control unit 22, which is provided in the gas feeding apparatus 1 and will be described later.
In this way, the first temperature sensor 21a and the second temperature sensor 21b are provided on the proximal end side of the opening portions 15a and 15b respectively. As described above, the opening portions 15a and 15b are separated by a predetermined distance in the horizontal direction and provided below the gas feeding connector receiving part 14, and so the first temperature sensor 21a and the second temperature sensor 21b are also separated by a predetermined distance in the horizontal direction and disposed below the gas feeding connector receiving part 14.
As shown in
The gas feeding tube connector 6a is provided at the proximal end portion of the gas feeding tube 6. The gas feeding tube connector 6a is connected to the gas feeding connector receiving part 14 of the gas feeding apparatus 1.
A heater 6b for heating the feeding gas is disposed on the distal end side inside the gas feeding tube 6. The heater 6b is connected to a cable 6c passed through the gas feeding tube 6. The cable 6c is configured such that it is connected to the control unit 22 when the gas feeding tube 6 is connected to the gas feeding apparatus 1. The heater 6b is configured to heat the feeding gas in the gas feeding tube 6 to a constant temperature zone close to the body temperature (e.g., 35 to 39° C.).
The first temperature sensor 21a measures the room temperature via the opening portion 15a and outputs the first measurement result to the control unit 22. The second temperature sensor 21b measures the room temperature via the opening portion 15b and outputs the second measurement result to the control unit 22.
The control unit 22 as a processor calculates a temperature difference between the first measurement result measured by the first temperature sensor 21a and the second measurement result measured by the second temperature sensor 21b and detects whether the temperature difference is equal to or greater than a predetermined value. This predetermined value is assumed to be, for example, 1° C. in consideration of respective errors of the first temperature sensor 21a and the second temperature sensor 21b (e.g., variations during manufacturing and errors in measurement). Note that all or some functions of the plurality of circuits of the processor may be executed by software. For example, the processor including hardware may be constructed of a central processing unit (CPU), a ROM and a RAM so that the CPU reads and executes various programs corresponding to the respective functions stored in the ROM.
When the control unit 22 detects that the temperature difference does not exceed the predetermined value, the control unit 22 determines that the room temperature has been measured correctly. The control unit 22 adjusts a heating amount of the heater 6b, that is, a current value to be passed to the heater 6b based on the first and second measurement results (room temperature) measured by the first and second temperature sensors 21a and 21b. More specifically, the control unit 22 adjusts a current value to be passed to the heater 6b based on an average value of the first and second measurement results. The control unit 22 is configured to heat the heater 6b in the gas feeding tube 6 to thereby heat the feeding gas flowing through the gas feeding tube 6 and supply the feeding gas at substantially the same temperature as a body temperature of the patient 10 into the abdominal cavity of the patient 10. For example, the feeding gas may be heated to a temperature within a range of from 35 to 39° C.
On the other hand, when the control unit 22 detects that the temperature difference exceeds the predetermined value, the control unit 22 determines that the room temperature has not been measured correctly. When the control unit 22 detects that the room temperature has not been measured correctly, that is, the control unit 22 detects that an abnormality has been detected, the control unit 22 stops heating the feeding gas and stops a supply of the feeding gas into the abdominal cavity of the patient 10.
When the control unit 22 detects that an abnormality has occurred, the control unit 22 notifies the user that the abnormality has occurred. The control unit 22, for example, displays on the display unit 12 that the abnormality has been detected, and thereby notifies the user of the abnormality. Note that the notification of an abnormality is not limited to a display on the display unit 12 that the abnormality has been detected, but an LED (not shown) or the like may be turned on or a warning sound may be outputted from a speaker (not shown).
As shown in
The gas feeding tube connector 6a is connected to the gas feeding connector receiving part 14 provided on the panel part 11, constituting a protrusion. When the protrusion exists on the panel part 11, the heat source 30 is placed so as to avoid the protrusion, and so the heat source 30 is placed on the left side or the right side of the protrusion. Note that in the example in
In this case, a distance A between the heat source 30 and the first temperature sensor 21a disposed on the proximal end side of the opening portion 15a is, for example, 50 mm (>35 mm).
As shown in
A distance B between the first temperature sensor 21a and the second temperature sensor 21b is, for example, 28 mm (>25 mm). As shown in
Since the second temperature sensor 21b is disposed more than 25 mm away from the first temperature sensor 21a, the measured value is higher than the measurement result of the first temperature sensor 21a by 2° C. or more due to the influence of the heat source 30. Therefore, the second temperature sensor 21b cannot accurately measure the room temperature under the influence of the heat source 30.
As a result, the control unit 22 recognizes that a temperature difference between the first measurement result of the first temperature sensor 21a and the second measurement result of the second temperature sensor 21b is equal to or greater than the predetermined value, and can detect an abnormal state in which the room temperature cannot be measured accurately under the influence of the heat source 30.
Note that a case has been described in the example in
As shown in
The control unit 22 acquires the first measurement result measured by the first temperature sensor 21a (S1) and acquires the second measurement result measured by the second temperature sensor 21b (S2). Next, the control unit 22 calculates a temperature difference between the first measurement result and the second measurement result (S3) and determines whether the temperature difference is equal to or greater than a predetermined value (S4). Here, the control unit 22 determines whether the temperature difference is equal to or greater than 1° C.
When the control unit 22 determines that the temperature difference is not equal to or greater than a predetermined value (S4: NO), the control unit 22 causes the heater 6b to heat according to the first measurement result and the second measurement result (S5) and returns to the process in S1. On the other hand, when the control unit 22 determines that the temperature difference is equal to or greater than the predetermined value (S4: YES), the control unit 22 stops heating and gas feeding of the heater 6b (S6). Finally, the control unit 22 notifies the abnormality (S7) and ends the process. The control unit 22 notifies the user of the abnormality, for example, by causing the display unit 12 to display that the abnormality has been detected.
As described above, the gas feeding apparatus 1 provides two opening portions 15a and 15b of the panel part 11 on the front contacting the atmosphere and provides two temperature sensors (first and second temperature sensors 21a and 21b) on the proximal end side of the opening portions 15a and 15b. In this way, the gas feeding apparatus 1 prevents a room temperature from being erroneously measured under the influence of a disturbance by an air-conditioner or the like.
The gas feeding apparatus 1 causes the first temperature sensor 21a and the second temperature sensor 21b to be disposed separated by a predetermined distance in the horizontal direction below the protrusion of the panel part 11. In this way, when the heat source 30 is placed so as to avoid the protrusion, a temperature difference is generated between the temperature measured by the first temperature sensor 21a and the temperature measured by the second temperature sensor 21b, and the gas feeding apparatus 1 can detect an abnormal state under the influence of a disturbance by the heat source 30 or the like.
Thus, according to the gas feeding apparatus 1 of the present embodiment, it is possible to prevent the temperature sensor disposed on the apparatus from erroneously measuring the room temperature under the influence of a disturbance.
Next, another exemplary embodiment will be described.
In the aforementioned embodiment, the gas feeding tube connector 6a has been described as an example of a protrusion provided on the panel part 11, but the present disclosure is not limited to this.
As shown in
As in the case of the above embodiment, the first temperature sensor 21a and the second temperature sensor 21b are disposed on the proximal end side of the opening portions 15a and 15b respectively. The other components are similar to the components of the above embodiment.
As described so far, the gas feeding apparatus 1a of the present embodiment can prevent the temperature sensor disposed in the apparatus from erroneously measuring the room temperature under the influence of a disturbance as in the case of the above embodiment.
Next, another exemplary embodiment will be described.
As shown in
The gas feeding apparatus 1b of the present embodiment is provided with the opening portions 15a and 15b separated by a predetermined distance in the horizontal direction below the electrical connectors 42 and 43 provided on the rear panel 40. In the present embodiment, the electrical connectors 42 and 43 constitute protrusions.
The first temperature sensor 21a and the second temperature sensor 21b are disposed on the proximal end side of the opening portions 15a and 15b respectively as in the case of the above embodiment. The other components are similar to the components of the above embodiment.
As described so far, the gas feeding apparatus 1b of the present embodiment can prevent the temperature sensor disposed in the apparatus from erroneously measuring the room temperature under the influence of a disturbance as in the case of the above embodiment.
Note that an arrangement of the opening portions 15a and 15b is not limited to the arrangement in
In the gas feeding apparatus 1b, the opening portions 15a and 15b may be disposed separated diagonally by a predetermined distance. That is, the gas feeding apparatus 1b may have a configuration in which the opening portion 15a is disposed below the electrical connector 42 and the opening portion 15b is disposed below the electrical connector 44.
Note that the respective steps in the flowchart in the present specification may be executed in a different order of execution or a plurality of steps may be executed simultaneously or may be executed in order differing every time as long as it is not contrary to the nature of the specification.
The present disclosure is not limited to the aforementioned embodiments but various changes, modifications or the like can be made without departing from the gist of the disclosure.
Number | Date | Country | Kind |
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2018-005661 | Jan 2018 | JP | national |
This application is a continuation application of PCT/JP2018/029098 filed on Aug. 2, 2018 and claims benefit of Japanese Application No. 2018-005661 filed in Japan on Jan. 17, 2018, the entire contents of which are incorporated herein by this reference.
Number | Date | Country | |
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Parent | PCT/JP2018/029098 | Aug 2018 | US |
Child | 16932272 | US |