JP6534844B2 - Medical treatment tool holder - Google Patents

Description

  The present invention relates to a medical treatment tool holder that holds a medical treatment tool such as an endoscope and forceps.

  2. Description of the Related Art Conventionally, in endoscopic surgery, an endoscope holding apparatus is known that holds an endoscope in a desired posture. The endoscope gripping device has an endoscope holder at its tip end for holding the endoscope.

  For example, in Patent Document 1, when the insertion portion of the endoscope is inserted into a patient, in the insertion portion holding device that adjusts the advancement and retraction of the insertion portion and the torsion, the state of holding the insertion portion and the movement of the insertion portion A holding mechanism is described which is switchable between a free, non-holding state.

JP, 2008-154758, A

  However, as in the holding mechanism described in Patent Document 1, the conventional endoscope holder holds the endoscope and holds the endoscope completely to suppress its movement, and the movement of the endoscope is not free. It is only possible to switch between the two states with the holding state.

  If it is desired to correct the rotational position of the endoscope held by the endoscope holder but the rotational position is to be corrected, the held state is temporarily released to adjust the rotational position of the endoscope. However, in this case, the forward / backward position may move and become inappropriate at the time of correction of the rotational position. Also, conversely, when the rotational position of the endoscope held by the endoscope holder remains the same, the rotational position may move and become unsuitable when correcting the advancing / retreating position.

  As described above, in the conventional endoscope holder, it is not possible to maintain the advanced / retracted position and the rotational position which have been appropriately adjusted, and it may take time to adjust the position of the endoscope.

  SUMMARY OF THE INVENTION The present invention provides a medical treatment tool holder capable of adjusting the position of a medical treatment tool while eliminating such inconveniences and maintaining the advanced / retracted position or rotational position which has been properly adjusted. To aim.

  In order to achieve such an object, the present invention relates to a medical treatment tool holder for holding a medical treatment tool having a cylindrical portion having a cylindrical outer shape, wherein the medical treatment tool holder and the medical treatment tool hold each other along the central axis of the cylindrical portion. A first roller pair rotatable about a rotation axis extending in parallel, and a second roller pair rotatable about a central axis extending parallel to each other along a direction orthogonal to the central axis of the cylindrical portion A first contact state in which the outer peripheral surface of the cylindrical portion is held in contact with the outer peripheral surface of each roller of the first roller pair in the longitudinal direction, and the first contact state; The outer peripheral surface of the cylindrical portion is circumferentially extended over the outer peripheral surface of each roller of the first roller and the outer peripheral surface of each roller of the second roller pair. The second contact state in which the contact is made and the contact is held, and the contact in the second contact state Further comprising a dividing the second release state and a second abutment means with selectable characterized.

  According to the present invention, in the first contact state, the cylindrical portion of the medical treatment tool is sandwiched by the rollers constituting the first roller pair. Since these rollers are rotatable, the medical treatment tool is rotatable, but since these rollers abut on the outer circumferential surface in the longitudinal direction, they can not move back and forth.

  Then, in the second contact state, the cylindrical portion of the medical treatment tool is sandwiched by the rollers constituting the second roller pair. Since these rollers only contact linearly in the longitudinal direction of the outer peripheral surface, the medical treatment tool can be advanced and retracted, but since these rollers abut in the circumferential direction of the outer peripheral surface, It is impossible to rotate.

  Therefore, if the first contact state and the second contact state are selected, the medical treatment tool can not rotate and move back and forth relative to the medical treatment tool holder, so that the medical treatment can be performed. The tool can be stably held by the medical treatment tool holder.

  And conversely, if the first release state and the second release state are selected, the medical treatment tool becomes rotatable and can move back and forth with respect to the medical treatment tool holder, so the medical treatment tool Is movable relative to the medical treatment tool holder.

  On the other hand, if the first contact state and the second release state are selected, the medical treatment tool is rotatable but can not move back and forth relative to the medical treatment tool holder. Therefore, in this state, it is possible to correct only the rotational position while maintaining the advancing and retracting position, and the correction work becomes easy.

  On the other hand, if the first release state and the second contact state are selected, the medical treatment tool can move back and forth but can not rotate with respect to the medical treatment tool holder. Therefore, in this state, it is possible to correct only the advancing / retreating position while maintaining the rotational position, and the correction work becomes easy.

  In the present invention, a first switch for controlling selection of the first contact state and the first release state of the first contact means, and the first contact of the first contact means It is preferable to further comprise a first switch that controls selection of the contact state and the first release state.

  In this case, since the medical treatment tool holder is provided with the first and second switches for controlling the selection of the first and second contact states and the release state, the operator can control the selection at hand. It is possible and makes work easier. However, the switches for controlling the selection of the first and second contact states and the release state may be provided separately from the medical treatment tool holder.

  In the present invention, for example, the roller constituting the first roller pair is a cylindrical roller, and contacts the outer peripheral surface of the cylindrical portion linearly in the longitudinal direction with the outer peripheral surface of the body portion; The rollers constituting the roller pair 2 are small drum-shaped rollers, and can be configured to contact the outer peripheral surface of the cylindrical portion in a planar shape with the outer peripheral surface of the body portion.

  Also. In the present invention, for example, the first contact means is a first cylinder in which a portion supporting a part of the rollers constituting the first roller pair is fixed to a rod; The contact means may be configured such that a part of the rollers constituting the second roller pair is pivotally supported by a second cylinder fixed to a rod.

  Also. In the present invention, preferably, each of the first and second roller pairs is configured as a pair of two rollers.

  However, the number of rollers constituting the first and second roller pairs may be at least two, and the number of rollers is not limited to this. Further, the number of rollers constituting the first or second roller may be different between one side and the other side. For example, two rollers may be disposed on one side and one roller may be disposed on the other side, and these may be paired.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic which shows the medical treatment tool holding apparatus provided with the medical treatment tool holder which concerns on embodiment of this invention. FIG. 2A is a side view of the medical treatment tool holder, and FIG. 2B is a schematic view showing a roller as viewed from arrow C in FIG. 2A. FIG. 3A is a schematic view showing a first contact state, and FIG. 3B is a schematic view showing a first release state. FIG. 4A is a schematic view showing a second contact state, and FIG. 4B is a schematic view showing a second release state.

  Hereinafter, a medical treatment tool holder 10 according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the medical treatment tool holder 10 holds the medical treatment tool A, and is attached to the tip of the medical treatment tool holding device 100. The medical treatment tool A is, for example, an endoscope, a forceps or the like, and a cylindrical portion B whose outer shape is a cylindrical shape is held by the medical treatment tool holder 10. The medical treatment tool holding device to which the medical treatment tool holder 10 is attached is not limited to the medical treatment tool holding device 100 described below, and the configuration is arbitrary.

  The medical treatment tool holding device 100 is installed at a base 30 which is detachably fixed to a base such as an operating table, a stand 40 having a base end installed on the base 30, and a tip end of the stand 40 And an articulated body 50. Then, the medical treatment tool holder 10 is fixed to the distal end portion of the articulated body 50.

  In the stand 40, a plurality of link bodies are rotatably connected to each other by, for example, a ball joint.

  Here, in the articulated body 50, as described in JP-A-2015-47290, the first connection body 51 and the second connection body (not shown) are engaged with each other to form a first connection. The body 51 and the second connection body are alternately connected in series by a wire (not shown) and covered with a cover 52.

  One end of the wire is fixed to the tip of the articulated body 50 and the other end is connected to the wire operating means 60. By pulling the wire by the wire operation means 60, the posture of the articulated body 50 is fixed.

  As shown in FIG. 2A, the medical treatment tool holder 10 includes a holder base 11 and a holder body 12 fixed on the front side of the holder base 11.

  The holder base 11 is provided with a fixing portion 13 for detachably fixing the medical treatment tool holder 10 to the distal end portion of the articulated body 50. Further, the holder base 11 is provided with a switch 14 (14A, 14B) for holding the medical treatment tool A and selecting a release state.

  The holder main body 12 is pivotally supported by the main body base 15 fixed to the front side of the holder base 11 and the upper rear shaft 15 a of the main body base 15 with respect to the main body base 15. It is equipped with a body opening and closing part 16 mounted possible.

  The left and right side wall portions of the main body base 15 and the main body opening and closing portion 16 are formed with notches having a semicircular cross section, respectively. Thus, an opening is formed through which the cylindrical portion B of the medical treatment tool A is inserted while the main body opening / closing unit 16 is closed.

  With the main body opening / closing portion 16 open, the cylindrical portion B of the medical treatment tool A is placed on the notch of the main body base 15, and then the main body opening / closing portion 16 is closed to form a cylindrical portion in the opening. B can be inserted. Note that the closed state of the main body opening / closing portion 16 is stably maintained by the engagement by a hook (not shown).

  As shown in FIG. 2B, two long rollers 21 and 22 and small drum rollers 23 and 24 are pivotally supported by the main body base 15 and the main body opening / closing portion 16, respectively. The long rollers 21 and 22 and the small drum rollers 23 and 24 are configured by fixing a roller main body formed of a flexible material such as rubber to a rotating shaft.

  The long roller 21 is an elongated cylindrical roller whose longitudinal direction is the lateral direction of the medical treatment tool holder 10 (direction along the central axis of the cylindrical portion B of the medical treatment tool A), and the longitudinal direction It is rotatable around a central axis extending in Two long rollers 21 are supported by the main body opening / closing portion 16 so that their central axes are parallel and adjacent to each other with a gap between the outer peripheral surfaces.

  The long roller 22 is a roller of the same shape as the long roller 21 whose longitudinal direction is the lateral direction of the medical treatment tool holder 10, and is rotatable around a central axis extending in the longitudinal direction. Two long rollers 22 are supported by the main body base 15 so that their central axes are parallel and adjacent to each other with a gap between the outer peripheral surfaces.

  As shown in FIGS. 3A and 3B, the two long rollers 22 are pivotally supported by a support 25. The support 25 is fixed to the end of a rod 26a of the cylinder 26. The cylinder 26 is an air cylinder, an electric cylinder (electric actuator) or the like, and an air tube, a lead, etc. not shown are connected. The main body of the cylinder 26 is accommodated in the holder base 11.

  The extension and contraction of the rod 26a of the cylinder 26 is controlled by the switch 14A. As shown in FIG. 3B, when the switch 14A is off (projected state), the rod 26a is in a contracted state, and a gap is opened between the long roller 22 and the cylindrical portion B. This state corresponds to the first release state in the present invention. The switch 14A corresponds to a first switch of the present invention.

  On the other hand, as shown in FIG. 3A, when the switch 14A is on (pushed state), the rod 26a is in an extended state, and the outer peripheral surface of the body of the long roller 22 abuts on the cylindrical portion B. The cylindrical portion B is pressed against the long roller 21 side, and the cylindrical portions B are sandwiched by the long rollers 21 and 22.

  In this state, since the outer peripheral surface of the cylindrical portion B is brought into contact with the outer peripheral surfaces of the long rollers 21 and 22 over the longitudinal direction, the cylindrical portion B is rotatable, but the longitudinal direction It is impossible to go to

  This state corresponds to the first contact state in the present invention. The long rollers 21 and 22 correspond to the rollers constituting the first roller pair of the present invention, and the cylinder 26 corresponds to the first contact means of the present invention.

  As shown in FIG. 2B, the small drum roller 23 extends around the central axis extending in the front-rear direction of the medical treatment tool holder 10 (the direction orthogonal to the direction along the central axis of the cylindrical portion B of the medical treatment tool A). It is a small drum-shaped roller that is freely rotatable. Two small drum rollers 23 are pivotally supported by the main body opening / closing portion 16 so that their rotation axes are parallel and the long roller 21 exists therebetween.

  The small drum roller 24 is a small drum-shaped roller which is rotatable around a central axis extending in the front-rear direction of the medical treatment tool holder 10. Two small drum rollers 24 are pivotally supported by the main body base 15 so that their rotation axes are parallel and the long roller 21 exists therebetween.

  The two small drum rollers 24 are pivotally supported by a support 27. The support 27 is fixed to the end of a rod 28a of the cylinder 28. The cylinder 28 is an air cylinder, an electric cylinder (electric actuator) or the like, and an air tube, a lead, etc. not shown are connected. The main body of the cylinder 28 is accommodated in the holder base 11.

  The extension and contraction of the rod 28a of the cylinder 28 is controlled by the switch 14B. As shown in FIG. 4B, when the switch 14B is off (projected state), the rod 28a is in a contracted state, and a gap is opened between the small drum roller 24 and the cylindrical portion B. This state corresponds to the second release state in the present invention. The switch 14B corresponds to a second switch of the present invention.

  On the other hand, as shown in FIG. 4A, when the switch 14B is on (pushed state), the rod 28a is in an extended state, and the outer peripheral surface of the small drum roller 24 abuts on the cylindrical portion B. The cylindrical portion B is pressed to the small drum roller 23 side, and the cylindrical portion B is sandwiched between the small drum rollers 23 and 24.

  In this state, the cylindrical portion B is held in contact with the outer peripheral surface of the cylindrical portion B in a planar manner over a certain range of the circumferential direction of the outer peripheral surface of the small drum rollers 23, 24. It is possible to move back and forth but it is impossible to rotate.

  This state corresponds to the second contact state in the present invention. The small drum rollers 23, 24 correspond to the rollers constituting the second roller pair of the present invention, and the cylinder 28 corresponds to the second contact means of the present invention.

  Since the medical treatment tool holder 10 is configured as described above, when the switches 14A and 14B are both off, the cylindrical portion B of the medical treatment tool A is the long rollers 21, 22 and the small drum roller 23 , 24 and has a first released state and a second released state. Therefore, the movement of the cylindrical portion B is not inhibited by the rollers 21 to 24, and the medical treatment tool A can be advanced and retracted and can be rotated.

  When the switches 14A and 14B are both on, the cylindrical portion B of the medical treatment tool A is in a state of being sandwiched by both the long rollers 21 and 22 and the small drum rollers 23 and 24, and the first contact It will be in a state and a 2nd contact state. Therefore, the cylindrical portion B can neither advance nor retreat nor rotate, and the medical treatment tool A is stably held by the medical treatment tool holder 10.

  When the switch 14A is on and the switch 14B is off, the cylindrical portion B of the medical treatment tool A is in a state of being sandwiched by the long rollers 21 and 22, but there is a gap between it and the small drum rollers 23 and 24. It is in the open state, and in the first contact state, it is in the second release state. Thus, the cylindrical portion B is in a rotatable but impossible state. As a result, the rotational position can be adjusted while maintaining the advancing and retracting position of the medical treatment tool A, so the work of adjusting only the rotational position is facilitated.

  On the other hand, when the switch 14A is off and the switch 14B is on, the cylindrical portion B of the medical treatment tool A is in a state of being pinched by the small drum rollers 23, 24, but between the long rollers 21, 22 In the state in which the gap is open, and in the second contact state, the first release state is obtained. Thus, the cylindrical portion B is in a state where it can move back and forth but can not rotate. As a result, since the advancing and retreating position can be adjusted while maintaining the rotational position of the medical treatment tool A, the work of adjusting only the advancing and retreating position becomes easy.

  The present invention is not limited to the embodiment described above. For example, although the case where the 1st and 2nd contact means of the present invention was cylinders 26 and 28 was explained, it is not limited to this. For example, the first and second contact means of the present invention may be configured by a link mechanism or the like.

  Moreover, although the case where the long rollers 21 and 22 and the small drum rollers 23 and 24 pinch the cylindrical part B of the medical treatment tool A from both sides with one set of two on one side, respectively, the number of the rollers 21 to 24 is It is not limited to. The long roller and the small drum roller may sandwich the cylindrical portion B of the medical treatment tool A from both sides with at least one side on each side.

  Further, the number of long rollers and small drum rollers may be different between one side and the other side. For example, two drum rollers may be arranged on one side and one drum roller on the other side. In this case, it is preferable to dispose the other small drum roller so as to press the middle portion of the two long drum rollers.

  DESCRIPTION OF SYMBOLS 10 ... Medical treatment tool holding tool, 11 ... Holder base, 12 ... Holder main body, 13 ... Fixed part, 14A ... Switch (1st switch) 14B ... Switch (2nd switch) 15 ... Main body base 16, main body opening / closing portion, 21, 22, long rollers (rollers forming a first roller pair) 23, 24: small drum rollers (rollers forming a second roller pair), 26: cylinder (first roller) Contact means), 28: cylinder (second contact means), 100: medical treatment tool holding device, A: medical treatment tool, B: cylindrical portion.

Claims (5)

A medical treatment tool holder for holding a medical treatment tool having a cylindrical portion with a cylindrical outer shape, comprising:
A first pair of rollers rotatable about rotation axes extending parallel to each other along a central axis of the cylindrical portion;
A second roller pair rotatable about a central axis extending parallel to each other along a direction orthogonal to the central axis of the cylindrical portion;
A first contact state in which the outer peripheral surface of the cylindrical portion is brought into contact with the outer peripheral surface of each roller of the first roller pair in the longitudinal direction, and the contact in the first contact state A first contact means capable of selecting a first release state in which
A second contact state in which the outer peripheral surface of the cylindrical portion is brought into contact with the outer peripheral surface of each roller of the second roller pair in the circumferential direction, and the contact in the second contact state And a second contact means capable of selecting a second release state in which the second treatment state is released. A first switch controlling selection of the first contact state and the first release state of the first contact means;
Medical treatment instrument according to claim 1, further comprising a second switch for controlling the selection of the said second abutment state second release state of the second abutment means Holder. The roller constituting the first roller pair is a cylindrical roller, and contacts the outer peripheral surface of the cylindrical portion linearly in the longitudinal direction with the outer peripheral surface of the body portion,
The roller constituting the second roller pair is a small drum-shaped roller, and is in contact with the outer peripheral surface of the cylindrical portion in a planar shape with the outer peripheral surface of the body portion. Medical treatment tool holder. The first abutment means is a first cylinder in which a portion supporting a part of the rollers constituting the first roller pair is fixed to a rod,
4. The apparatus according to claim 1, wherein said second abutment means is a second cylinder in which a portion pivotally supporting a part of the rollers constituting said second roller pair is fixed to a rod. The medical treatment tool holder according to any one of the preceding claims.   The medical treatment tool holder according to any one of claims 1 to 4, wherein each of the first and second roller pairs is configured as a pair of two rollers.