The technology disclosed in the present specification relates to a medical tool gripper for gripping a long medical tool.
In general, a guide wire is inserted into a body in treating or examining a constricted part or an occluded part in a blood vessel or the like. The technician, such as a doctor, generally operates a guide wire by rotating a torque device attached on the proximal end side of the guide wire, thus rotating the guide wire (see Japanese Patent No. 5030949 B2, for example).
The torque device described in Japanese Patent No. 5030949 B2 includes a substantially hollow cylindrical main body, and a fixing tool for fixing a guide wire to the main body. The main body has a substantially linear inner space that extends over the entire longitudinal length of the main body and in which a guide wire can be arranged, and a groove that is open on the outer periphery of the main body and is communicated with the inner space over the entire longitudinal length of the main body. The opening of the groove is formed linearly on the outer periphery of the main body, over the entire longitudinal length of the main body.
In the torque device described in Japanese Patent No. 5030949 B2, the opening of the above-described groove formed in the main body is formed linearly over the entire longitudinal length of the main body on the outer periphery of the main body, as described above. Therefore, in a case where a guide wire is fixed to the main body by the fixing tool, a part of the guide wire may come out to the outside of the main body through such a groove against the intention of the technician, which may impede the operation of the guide wire or the like by the technician. This problem occurs not only in the torque device for gripping a guide wire, but commonly occurs in any medical tool gripper for gripping a long medical tool.
The technology disclosed herein aims to solve the above-described problem, and the problem can be solved by the following aspects, for example.
(1) A medical tool gripper for gripping a long medical tool, the medical tool gripper including a substantially hollow cylindrical main body that includes main body inner space in which the medical tool can be arranged, and a fixing tool that fixes the medical tool to the main body, in which the main body has a main body groove that extends over an entire longitudinal direction of the main body, is communicated with the main body inner space, and is open on an outer periphery of the main body, and the main body groove includes a distal end portion including a distal end of the main body groove and a proximal end portion including a proximal end of the main body groove and having an opening at a different position from an opening of the distal end portion in a circumferential direction of the main body. In the medical tool gripper, the position in the circumferential direction of the opening of the proximal end portion is different from that of the opening of the distal end portion in the main body groove. Thus, it is possible to suppress the problem that the rear end portion of a medical tool comes out to the outside of the medical tool gripper through the main body groove, as compared with the case in which the opening of the main body groove is formed linearly over the entire longitudinal length of the main body on the outer periphery of the main body. Therefore, it is possible to prevent the operation of the medical tool against the intention of a technician.
(2) The medical tool gripper according to the above-described (1), in which the opening of the distal end portion and the opening of the proximal end portion of the main body groove may be linear along the longitudinal direction, and the main body groove may further include a communication portion communicating the opening of the distal end portion and the opening of the proximal end portion. In the medical tool gripper, the medical tool is arranged in the main body inner space through the main body groove having such a configuration, whereby it is possible to more reliably secure the straightness of the medical tool arranged in the main body inner space.
(3) The medical tool gripper according to the above-described (2), in which an opening of the communication portion may be extended in a direction inclined relative to the longitudinal direction such that a position of the opening of the communication portion in a direction orthogonal to the longitudinal direction at the proximal end side is closer to the opening of the proximal end portion of the main body groove than a position of the opening of the communication portion at the distal end side. In the medical tool gripper, when the medical tool is inserted into the main body groove, it is possible to suppress the deterioration of the straightness of the medical tool and more reliably secure the straightness of the medical tool arranged in the main body inner space.
(4) The medical tool gripper according to any one of the above-described (1) to (3), in which the main body may include a first component that includes a distal end of the main body and in which the distal end portion of the main body groove is formed, and a second component connected to the first component that includes a proximal end of the main body and in which the proximal end portion of the main body groove is formed. Depending on a production process, easier production may be possible as compared with the case in which the main body is formed integrally.
(5) The medical tool gripper according to any one of the above-described (1) to (3), in which the main body may be formed integrally by molding. In the medical tool gripper, it is possible to reduce the number of members as compared with the case in which the main body is formed by a plurality of separate members.
(6) According to the above-described medical tool gripper, further including a substantially hollow cylindrical extension member that is connected to a proximal end side of the main body, in which the extension member includes extension inner space that extends over the entire longitudinal length and in which the medical tool can be arranged and an extension groove that is open on the outer periphery of the main body, and is communicated with the extension inner space over the entire longitudinal length of the main body, and a position of an opening of a proximal end portion of the extension groove may be different in the circumferential direction of the main body from a position of an opening of the proximal portion of the main body groove. In the medical tool gripper, with such an extension member, it is possible to increase the length of the medical tool gripper itself. Furthermore, the position of the opening of the proximal end portion of the medical tool gripper with the extension member attached thereto (the proximal end portion of the extension groove) is different from the position of the opening of the proximal end portion of the main body without the extension member attached thereto. Thus, it is possible to more securely suppress the problem that the rear end portion of a medical tool comes out to the outside of the medical tool gripper through the main body groove.
The terms “comprise” and any form thereof such as “comprises” and “comprising,” “have” and any form thereof such as “has” and “having,” and “include” and any form thereof such as “includes” and “including” are open-ended linking verbs. As a result, a device, like a medical tool gripper, that “comprises,” “has,” or “includes” one or more elements possesses those one or more elements, but is not limited to possessing only those elements. Likewise, a method that “comprises,” “has,” or “includes” one or more steps possesses those one or more steps, but is not limited to possessing only those one or more steps.
Any embodiment of any of the devices and methods can consist of or consist essentially of—rather than comprise/include/have—any of the described steps, elements, and/or features. Thus, in any of the claims, the term “consisting of” or “consisting essentially of” can be substituted for any of the open-ended linking verbs recited above, in order to change the scope of a given claim from what it would otherwise be using the open-ended linking verb.
The technology disclosed herein can be achieved in various aspects, such as medical tool grippers and methods for producing the same.
The torque device 100 is a device for gripping a guide wire GW, and includes a main body 10 and a fixing tool 20. In a state where the guide wire GW is not fixed, the fixing tool 20 is at a given position (hereinafter, referred to as a “first position”). This state is the first state of the torque device 100. The torque device 100 is an example of the medical tool gripper in the claims, and the guide wire GW is an example of the long medical tool in the claims.
The main body 10 is a substantially hollow cylindrical member with substantially linear main body inner space IS in which the guide wire GW can be arranged. The fixing tool 20 is a member for fixing the guide wire GW to the main body 10. Examples of the material forming the main body 10 and the fixing tool 20 include resin materials such as ABS resin and polyethylene. It is particularly preferable to use ABS resin that is light weighted, less deformed, and has high strength.
The main body inner space IS is extended over the entire length in the longitudinal direction (the Z-axis direction) of the main body 10. The main body 10 has a main body groove G1 that is open on the outer periphery of the main body 10 and is communicated with the main body inner space IS over the entire longitudinal length. The width of the main body groove G1 (the width in the X-axis direction) is larger than the diameter of the guide wire GW. Thus, the guide wire GW displaceable in the radial direction of the guide wire GW can be inserted into the main body groove G1.
The main body 10 has a fixing tool storing groove G2 that is communicated with the main body groove G1 and in which the fixing tool 20 can be stored. In the main body groove G1 and the fixing tool storing groove G2, the surfaces along the depth direction are the side surfaces of the grooves. The side surfaces of the main body groove G1 and the fixing tool storing groove G2 are both planar from the edge of the outer peripheral surface of the opening toward the main body inner space IS. The “opening” here indicates an opening of the groove of the main body 10 onto the outer peripheral surface.
As illustrated in
The main body 10 has the main body inner space IS, center space CS (see
The width of the distal end groove G11 is slightly larger than the diameter of the guide wire GW. Thus, when the guide wire GW is arranged in the distal end groove G11, the position of the guide wire GW (more precisely, a part of the guide wire GW) is defined. As illustrated in
Next, the fixing tool 20 will be described.
As illustrated in
As illustrated in
The fixing tool 20 is removable from the main body 10 under a certain condition, while it cannot be removed from the torque device 100 as a finished product. In a case where a second component P2 (see
The narrow portion G120 is communicated with the distal end groove G11 and the center space CS. As illustrated in
The wide portion G121 is communicated with the narrow portion G120 and the center space CS. The wide portion G121 is extended linearly in the longitudinal direction (the Z-axis direction) of the main body 10. As illustrated in
As illustrated in
As illustrated in
The communication groove G14 is connected with the proximal end side of the narrow portion G120 of the rail groove G12. The above-described fixing tool storing groove G2 is formed by the connection portion with the communication groove G14 and the more proximal end side than the connection portion in the narrow portion G120 of the rail groove G12, and the wide portion G121.
As illustrated in
The second component P2 may be attached to the first component P1 so as to be rotatable in the circumferential direction of the main body 10. For example, a groove extending along the circumferential direction is formed on one of the inner peripheral surface of the first component P1 and the peripheral surface of the small diameter portion P22, and a projection loosely fitted to the groove is formed on the other surface, so that the projection is fitted to the groove. In this manner, the second component P2 is rotatable in the circumferential direction relative to the first component P1. The second component P2 is rotated such that the position of the proximal end groove G13 of the second component P2 is different in the circumferential direction from that of the proximal end groove G13 of the main portion 12, whereby the guide wire GW stored in the main portion 12 can be stored more easily in the proximal end groove G13 of the second component P2.
As described above,
To attach (fix) the torque device 100 to the guide wire GW, the fixing tool 20 is first arranged at the first position illustrated in
If the torque device has the main body inner space IS for storing the guide wire GW but does not have an opening communicated with the main body inner space IS, in order to fix the guide wire GW to the main body 10, the distal end of the guide wire GW is inserted in the main body inner space IS from the proximal end (or the distal end) of the main body 10, and the guide wire GW or the main body 10 itself is moved in the longitudinal direction thereof, so that a part of the guide wire GW to be arranged in the main body 10 is arranged in the main body inner space IS. Here, in the operation of arranging the guide wire GW in the main body inner space IS, it requires work to move the guide wire GW in the longitudinal direction because the guide wire GW is long. However, in the torque device 100 of the first embodiment, a part of the guide wire GW to be arranged in the main body 10 is inserted into the main body groove G1 by inserting the part into the opening of the main body groove G1 from the side surface of the main body 10, so as to be arranged in the main body inner space IS. Thus, it is possible to improve the efficiency of the operation of arranging the guide wire GW in the main body inner space IS.
Next, the fixing tool 20 is moved along the longitudinal direction (the Z-axis positive direction) of the rail groove G12, and arranged at the second position in the main body groove G1. Here, a part of the fixing tool 20 is positioned in the main body groove G1, and the inner wide portion 21 of the fixing tool 20 and the main body 10 sandwich the guide wire GW to fix the guide wire GW to the main body 10 (see
As described above, among a plurality of projections 230 formed on the fixing tool 20, the height of the projection 230 positioned on the most distal end side is higher than the height of the other projections 230. Thus, it is possible to easily move the fixing tool 20 in the longitudinal direction (the Z-axis direction) of the main body 10 by contact of a technician's finger with the projection 230 positioned on the most distal end side.
To release the fixed guide wire GW by the fixing tool 20, the fixing tool 20 is restored in the first position to be stored in the fixing tool storing groove G2. In this manner, the state of the guide wire GW sandwiched by the inner wide portion 21 of the fixing tool 20 and the main body is released, and thus the fixing of the guide wire GW (or the fixed guide wire GW) is released.
As described above, in the torque device 100 of the first embodiment, the substantially hollow cylindrical main body 10 has the main body inner space IS that extends over the entire longitudinal length of the main body 10 and in which the guide wire GW can be arranged, and the main body groove G1 that extends over the entire length in the longitudinal direction (the Z-axis direction) of the main body 10 is communicated with the main body inner space IS, and is open on the outer periphery of the main body 10. In the main body groove G1, the positions of the openings of the distal end groove G11 and the proximal end groove G13 are different in the circumferential direction of the main body 10.
In the torque device in which the opening of the main body groove G1 is formed linearly over the entire longitudinal length of the main body 10 on the outer periphery of the main body 10, in a case where the guide wire GW is fixed to the main body 10 by the fixing tool 20, the rear end portion of the guide wire GW may come out to the outside of the main body 10 through the main body groove G1 against the intention of a technician, which may impede the operation of the guide wire GW or the like by the technician. Meanwhile, in the torque device 100, the positions of the openings of the distal end groove G11 and the proximal end groove G13 are different in the circumferential direction of the main body 10, whereby it is possible to suppress the problem that the rear end portion of the guide wire GW comes out to the outside of the torque device 100 through the main body groove G1, as compared with the case in which the opening of the main body groove G1 is formed linearly over the entire longitudinal length of the main body 10 on the outer periphery of the main body 10. Thus, the torque device 100 suppresses the case in which a part of the guide wire GW comes out to the outside of the main body 10 through the main body groove G1 against the intention of a technician (i.e., unintentionally). Therefore, it is possible to prevent the operation of the guide wire GW against the intention of a technician.
In the torque device 100, the main body 10 has the fixing tool storing groove G2 that is communicated with the main body groove G1 and stores the fixing tool 20 such that the fixing tool 20 is not positioned in the main body groove G1. When the guide wire GW is arranged in the main body inner space IS through the main body groove G1, the fixing tool 20 is stored in the fixing tool storing groove G2. Thus, the operation of arranging the guide wire GW is not impeded.
In the torque device 100, the openings of the distal end portion GT and the proximal end groove G13 of the main body groove G1 are linear along the longitudinal direction (the Z-axis direction) of the main body 10. The main body groove G1 includes the communication groove G14 communicating the openings of the distal end portion GT and the proximal end groove G13. In this manner, the guide wire GW is arranged in the main body inner space IS through the main body groove G1 having such a configuration, whereby it is possible to more reliably secure the straightness of the guide wire GW arranged in the main body inner space IS.
In the torque device 100, the opening of the communication groove G14 is extended in a direction inclined relative to the longitudinal direction of the main body 10 such that a position of the opening of the communication groove G14 in the direction orthogonal to the longitudinal direction of the main body 10 (the X-axis direction in the figure) at the proximal end side is closer to the proximal end groove G13 than is a position of the opening of the communication groove G14 at the distal end side. If the opening of the communication groove G14 is extended in a direction orthogonal to the longitudinal direction of the main body 10, viewed from the depth direction of the distal end portion GT of the main body groove G1, the guide wire GW is bent at a sharp angle (substantially a right angle) when the guide wire GW is inserted into the main body groove G1, which may deteriorate the straightness of the guide wire GW. Meanwhile, in the torque device 100, the opening of the communication groove G14 is extended in the inclined direction as described above. Thus, when the guide wire GW is inserted into the main body groove G1, the bent angle of the guide wire GW is relatively small. Therefore, in the torque device 100, when the guide wire GW is inserted into the main body groove G1, it is possible to suppress the deterioration of the straightness of the guide wire GW and more reliably secure the straightness of the guide wire GW arranged in the main body inner space IS.
In the torque device 100, the main body 10 includes the first component P1 that includes the distal end of the main body 10 and where the distal end portion GT of the main body groove G1 is formed, and the second component P2 connected to the first component P1 that includes the proximal end of the main body 10 and where the proximal end groove G13 is formed. If the main body 10 is produced as an integrated object, easy production is not possible because the main body inner space IS and the main body groove G1 are difficult to form, for example. However, in the torque device 100, the main body 10 is formed by the separate components of the first component P1 and the second component P2. Therefore, it is possible to produce the torque device 100 by forming the distal end portion GT of the main body groove G1 in the first component P1 and the proximal end groove G13 of the main body groove G1 in the second component P2, and then connect the first component P1 and the second component P2. In this manner, it is possible that the torque device 100 may facilitate the production, as compared with the configuration in which the main body 10 is produced as an integrated object.
As described above, the main body 10A of the second embodiment is a member formed integrally by molding. Except such an aspect, the main body 10A has the same shape as the main body 10. That is, the main body 10A has inner space and grooves such as the main body inner space IS and the main body groove G1 formed in the main body 10 of the first embodiment. Moreover, the effects of the inner space and grooves are same as those in the first embodiment, and the detailed explanation thereof is omitted.
In the torque device 100A, the fixing tool 20 is arranged in the fixing tool storing groove G2 by pushing the inner wide portion 21 of the fixing tool 20 into the rail groove G12 of the main body 10A and fitting it in the rail groove G12. Although an operator such as a technician cannot easily remove the fixing tool 20 from the main body 10A, the probability of losing the fixing tool 20 as a part is eliminated.
In the torque device 100A, the main body 10A is formed integrally by molding. Thus, it is possible to reduce the number of members as compared with the case in which the main body 10A is formed by a plurality of separate members. Other effects of the second embodiment are similar to the effects of the first embodiment, and thus the detailed explanation thereof is omitted.
The torque device 100B of the third embodiment includes a main body 10B formed by the first component P1 of the first embodiment and the extension member E connected to the proximal end side of the main body 10B. The extension member E is attached to the main body 10B to be rotatable in the Z axis rotating direction and removable.
The main body 10B has main body inner space ISB1 having substantially the same configuration as the main body inner space IS of the first embodiment, and a main body groove GB1 having substantially the same configuration as the main body groove G1 of the first embodiment.
The main body inner space ISB1 is different from the main body inner space IS of the first embodiment only in the aspect that the length of the proximal end portion (the longitudinal length of the main body 10B) is shorter by the second component P2 not provided. That is, it is considered that the torque device formed by removing the second component P2 from the torque device 100 of the first embodiment and attaching the extension member E is the torque device 100B of the third embodiment. The other components in the third embodiment are similar to those in the first embodiment.
The main body groove GB1 includes the distal end portion GT including the distal end of the main body groove GB1, and a proximal end portion GBB including the proximal end of the main body groove GB1. The position of the opening of the proximal end portion GBB is different in the circumferential direction of the main body 10B (the circumferential direction around the Z axis) from the position of the opening of the distal end portion GT. That is, viewed from the circumferential direction of the main body 10B, the positions of the openings of the proximal end portion GBB and the distal end portion GT do not overlap each other. The main body groove GB1 is different from the main body groove G1 of the first embodiment only in the aspect that the length of the proximal end portion GBB (the longitudinal length of the main body 10B) is shorter than the length of the proximal end groove G13 of the first embodiment by the second component P2 not provided.
The extension member E is a substantially hollow cylindrical member connected to the proximal end side of the main body 10B. The extension member E has extension inner space ISB2 that extends over the entire length in the longitudinal direction (the Z-axis direction) of the main body 10B and is substantially linear inner space in which the guide wire GW can be arranged, and an extension groove GB2 that can be communicated with the opening of the main body 10B and is communicated with the extension inner space ISB2 over the entire length in the longitudinal direction of the main body 10B.
The extension groove GB2 includes a distal end portion GB21 including the distal end of the extension groove GB2, a proximal end portion GB22 including the proximal end of the extension groove GB2, and a communication portion GB23 communicating the distal end portion GB21 and the proximal end portion GB22.
The distal end portion GB21 of the extension groove GB2 communicates with the proximal end portion GBB of the main body groove GB1.
The openings of the distal end portion GB21 and the proximal end portion GB22 of the extension groove GB2 are both linear along the longitudinal direction (the Z-axis direction) of the main body 10B, and the depth direction of the groove is linear from the opening on the outer peripheral surface toward the extension inner space ISB2.
The position of the opening of the proximal end portion GB22 of the extension groove GB2 is different in the circumferential direction of the main body 10B (the circumferential direction around the Z axis) from the position of the opening of the proximal end portion GBB of the main body groove GB1. That is, viewed from the circumferential direction of the main body 10B, the positions of the openings of the proximal end portion GB22 of the extension groove GB2 and the proximal end portion GBB of the main body groove GB1 do not overlap each other. In
The operation of the third embodiment are same as those of the first embodiment, and the detailed explanation thereof is omitted. (A part of) the guide wire GW is arranged in the inner space ISB formed by the main body inner space ISB1 and the extension inner space ISB2 through the groove GB formed by the main body groove GB1 and the extension groove GB2.
With the same reason for the torque device 100 of the first embodiment, the torque device 100B of the third embodiment also suppresses the case in which a part of the guide wire GW unintentionally comes out to the outside of the main body 10 through the main body groove GB1, thus impeding the operation of the guide wire GW or the like by the technician.
Furthermore, the torque device 100B includes the substantially hollow cylindrical extension member E connected to the proximal end side of the main body 10B. The extension member E has the extension inner space ISB2 that extends over the entire length in the longitudinal direction (the Z-axis direction) of the main body 10B and in which the guide wire GW can be arranged, and the extension groove GB that is open on the outer periphery of the main body 10B and is communicated with the extension inner space ISB2 over the entire length in the longitudinal direction of the main body 10B. The position of the opening of the proximal end portion GB22 of the extension groove GB2 is different in the circumferential direction of the main body 10B (the circumferential direction around the Z axis) from the position of the opening of the proximal end portion GBB of the main body groove GB1. With such an extension member E, it is possible to increase the length of the torque device 100B itself. Furthermore, the position of the opening of the proximal end portion of the torque device 100B with the extension member E attached thereto (the proximal end portion GB22 of the extension groove) is different from the position of the opening of the proximal end portion of the main body 10B without the extension member E attached thereto. Thus, it is possible to more securely suppress the problem that the rear end portion of a medical tool comes out to the outside of the torque device 100B through the main body groove GB1. If the position of the opening of the proximal end portion GB22 of the extension groove GB2 overlaps the position of the opening of the distal end portion GT of the main body groove GB1 in the circumferential direction of the main body 10B, it is possible to more reliably secure the straightness of the guide GW when arranged in the above-described inner space ISB through the groove GB formed by the main body groove GB1 and the extension groove GB2.
The technology disclosed herein is not limited to the above-described embodiments, and can be modified in various forms without departing from the gist thereof. For example, the following modification examples are also possible.
The configurations of the torque devices 100, 100A, and 100B in the above embodiments are only examples and can be modified in various forms.
In the above embodiments, the extending direction of the openings of the grooves (the main body grooves G1, GB1, the fixing tool storing groove G2, and the like) is not particularly limited. The openings of the grooves may not be linear (may be curved, for example).
In the above embodiments (or modification examples, the same applies hereinafter), the depth direction of the grooves is not particularly limited. In each groove, the side surface of the groove along the depth direction may not be planar, and may be curved in the depth direction.
In the torque devices 100, 100B of the above embodiments, the fixing tool 20 is removable from the first position under a certain condition. However, the fixing tool 20 may constantly remain in the fixing tool storing groove G2.
In the above-described third embodiment, the main body 10B may be formed by a plurality of parts that are separate from each other.
In the torque device 100B of the above-described third embodiment, the extension member E connected to the proximal end side of the main body 10B may be rotatable in the circumferential direction of the extension member E, and the angles of the grooves and inner space formed in the extension member E may be changed. Moreover, in the form illustrated in
The materials for members forming the torque devices 100, 100A, and 100B in the above embodiments are only examples, and may be modified variously.
The above embodiments have described, as an example, the torque device for gripping a guide wire. However, the disclosed embodiments are not limited to the torque device, and can be applied in the same manner to any medical tool gripper for gripping a long medical tool.
This application is a continuation application of International Application No. PCT/JP2020/001271, filed Jan. 16, 2020, the contents of which are incorporated herein by reference in their entirety.
Number | Date | Country | |
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Parent | PCT/JP2020/001271 | Jan 2020 | US |
Child | 17812026 | US |