WO2005110253A1 - 外科用処置具 - Google Patents
外科用処置具 Download PDFInfo
- Publication number
- WO2005110253A1 WO2005110253A1 PCT/JP2005/008482 JP2005008482W WO2005110253A1 WO 2005110253 A1 WO2005110253 A1 WO 2005110253A1 JP 2005008482 W JP2005008482 W JP 2005008482W WO 2005110253 A1 WO2005110253 A1 WO 2005110253A1
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- WO
- WIPO (PCT)
- Prior art keywords
- section
- opening
- shaft member
- force
- bevel gear
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
- A61B17/062—Needle manipulators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00681—Aspects not otherwise provided for
- A61B2017/00738—Aspects not otherwise provided for part of the tool being offset with respect to a main axis, e.g. for better view for the surgeon
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
Definitions
- the present invention relates to a surgical treatment tool for grasping a needle under an endoscope to anastomize a tissue or the like.
- an endoscope As an operation for performing coronary revascularization of the heart under an endoscope, an endoscope, a surgical treatment tool as a needle holder, forceps and the like are inserted into the thoracic cavity through a trocar punctured in the chest wall. After insertion, a part of the coronary artery is incised with scissors and anastomosis is provided. The bypass surgery to connect is known.
- US Patent No. 5,951,575 discloses an insertion portion having a curved portion at a distal end portion.
- a pair of jaws that can be opened and closed and rotatable around the axis of the insertion portion are provided at the distal end of the insertion portion.
- a drive cable for transmitting the turning power and the opening / closing force to the distal end of the insertion section is inserted through the operation section force insertion section to the distal end.
- US Patent Publication No. 2002-156497 discloses a surgical treatment tool having a multi-degree-of-freedom forceps structure, in which three links transmit rotating power and opening / closing force of a treatment section.
- the surgical treatment instrument disclosed in the above-mentioned US Patent No. 5,951,575 has a pair of openable and closable jaws at the distal end of the insertion portion.
- the pair of jaws are pulled into the cylindrical portion via a cable by operating the operation unit, closed, and the needle is gripped. Therefore, at the time of anastomosis under an endoscope, it is necessary to perform an operation of rotating while holding the suturing needle, and the operability is not good for the operator.
- the surgical treatment tool disclosed in US Patent Publication No. 2002-156497 has three link members in the insertion portion, so that the diameter of the insertion portion of the treatment tool can be reduced. Suitable There is no mechanism. In addition, there is a limit on the rotation angle when the operator grasps the suture needle. Further, like the surgical operation tool disclosed in the above-mentioned U.S. Pat. No. 5,951,575, the link member is connected when the operation of rotating the suture needle while transmitting the holding force is performed. Since the frictional force of the pivot axis increases, the rotation operation becomes heavy for the surgeon, so that the operability is not good and the usability is poor. In addition, the structure is complicated, and the manufacturing cost is improved. Also, the insertion portion becomes thicker.
- the present invention has been made in view of the above circumstances, and provides a surgical treatment tool capable of achieving a small diameter of an insertion portion with good operability in tissue anastomosis or the like under an endoscope. It is intended to provide.
- a surgical treatment instrument of the present invention includes an insertion portion, an operation portion provided at one end of the insertion portion, a treatment portion provided to extend from the other end of the insertion portion, A first shaft member that transmits rotational power to the treatment section in conjunction with a rotation operation of a rotation operation member provided in the operation section, and an open / close operation of an opening / closing operation member provided in the operation section; A second shaft member for transmitting the opening and closing force to the treatment section, the first shaft member and the second shaft member are arranged on substantially the same axis, and the treatment section is At least one of two holding members that is rotatable around an axis in an extending direction in accordance with the turning operation of the turning operation member and has a holding surface in accordance with the opening / closing operation of the opening / closing operation member, respectively. It can be opened and closed by moving it.
- FIG. 1 is a perspective view of a one-dollar driver according to a first embodiment of the present invention.
- FIG. 2 is a plan view of a dollar driver according to the first embodiment of the present invention.
- FIG. 3 is a cross-sectional view of a tip portion including a treatment section of the dollar driver according to the first embodiment of the present invention.
- FIG. 4 is a cross-sectional view of a base end portion including an operating portion of a dollar driver according to the first embodiment of the present invention.
- FIG. 5 relates to a first embodiment of the present invention—a clamping unit of a treatment section of a dollar driver. It is sectional drawing of the front-end
- Fig. 6 is a view for explaining an operation for opening the holding unit of the treatment section to hold the needle.
- FIG. 7 is a view for explaining an operation of pinching and rotating a needle.
- FIG. 8 is a cross-sectional view of a tip portion including a treatment section of a dollar driver according to a second embodiment of the present invention.
- FIG. 9 is a sectional view taken along line IX-IX of FIG.
- FIG. 10 is a cross-sectional view of a base end portion including an operation unit of a dollar driver according to a second embodiment of the present invention.
- FIG. 11 is a sectional view taken along line XI-XI of FIG.
- FIG. 12 is a cross-sectional view of a base end portion including an operation portion of a dollar driver according to a second embodiment of the present invention.
- FIG. 13 is a cross-sectional view of the distal end portion of the dollar handling device according to the second embodiment of the present invention, showing a state in which the clamping unit of the treatment section of the dollar driver is open.
- Fig. 14 is a schematic view showing a state where a needle driver approaches an operation site via a trocar.
- FIG. 15 is an external perspective view of the one-dollar driver according to the third embodiment of the present invention, also observing a diagonal force in front of the driver.
- FIG. 16 is a front view of the -dollar screwdriver of the third embodiment.
- Fig. 17 is a left side view of the dollar driver of the third embodiment as viewed from one side (left side).
- FIG. 18 is a right side view of the-$ 1 driver of the third embodiment viewed from the other side (right side).
- FIG. 19 is a view for explaining a state in which the dollar driver in FIG. 15 is gripped.
- FIG. 20 is a front view of a tip portion including a treatment section of the -dollar driver according to the third embodiment.
- FIG. 21 is a front view of the distal end portion of the treatment section according to the third embodiment with the holding section opened.
- FIG. 22 is a cross-sectional view of a distal end portion including a treatment section, taken along the axial direction of the dollar driver of the third embodiment.
- FIG. 23 is a cross-sectional view of the distal end portion of the third embodiment in a state where the holding portion of the treatment section is open, along the axial direction of the dollar driver.
- FIG. 24 is a perspective view for describing the internal structure of the distal end portion according to the third embodiment.
- FIG. 25 is a sectional view taken along the line AA of FIG. 23.
- FIG. 26 is a perspective view for explaining the internal structure of the distal end portion, omitting the distal end housing member of the third embodiment.
- FIG. 27 is a front view of a distal end portion showing a state in which the treatment section of the third embodiment is bent by 90 degrees with respect to the axis of the insertion section.
- FIG. 28 is a cross-sectional view of a distal end portion showing a state in which the treatment section of the third embodiment is bent by 90 degrees with respect to the axis of the insertion section.
- FIG. 29 is a perspective view for describing the internal structure of the distal end portion of the third embodiment, in which the rotating portion base member is omitted.
- Fig. 30 is an external perspective view of the operating unit of the -dollar driver according to the third embodiment, also viewed from the front obliquely with one measuring force.
- FIG. 31 is a cross-sectional view of the operation unit of the third embodiment, taken along the axial direction of the dollar driver.
- FIG. 32 is a cross-sectional view of the operation unit in which a portion surrounded by a circle A in FIG. 17 is enlarged.
- FIG. 33 is a perspective view showing an internal configuration of an operation unit provided around a rotary dial, in which an exterior member of the operation unit according to the third embodiment is omitted.
- FIG. 34 is a perspective view of each constituent member in the operation unit according to the third embodiment, as viewed also from the oblique lower surface with one measuring force.
- Fig. 35 is a perspective view showing a part of the exterior member of the operation unit according to the third embodiment, and observing the constituent members in the operation unit at an oblique lower surface with one measuring force.
- FIG. 36 is a perspective view of a part of the exterior member of the operation unit according to the third embodiment, and is a perspective view of each constituent member in the operation unit as viewed obliquely from the base end side.
- FIG. 37 A third embodiment of the present invention. It is sectional drawing which cut
- FIG. 38 is a perspective view of the operation unit according to the third embodiment as viewed from one side obliquely measuring force.
- FIG. 39 is a front view of the -dollar screwdriver of the third embodiment, also looking at the tip side force.
- FIG. 40 is a view for explaining another structure for pulling the pulling wire straight toward the proximal end.
- FIGS. 1 to 5 are views for explaining the structure of a single-dollar driver, which is a surgical treatment tool as a needle holder according to the first embodiment of the present invention.
- FIG. 1 is a perspective view of a dollar driver according to the present embodiment.
- FIG. 2 is a plan view of a one-dollar driver according to the present embodiment.
- FIG. 3 is a cross-sectional view of a leading end portion including a treatment section 4 of the dollar driver 1 according to the present embodiment.
- FIG. 4 is a cross-sectional view of the base end portion including the operation unit 3 of the dollar driver 1 according to the present embodiment.
- FIG. 1 is a perspective view of a dollar driver according to the present embodiment.
- FIG. 2 is a plan view of a one-dollar driver according to the present embodiment.
- FIG. 3 is a cross-sectional view of a leading end portion including a treatment section 4 of the dollar driver 1 according to the present embodiment.
- FIG. 4 is a cross-sectional view of the base end
- FIG. 5 is a cross-sectional view of the distal end portion of the single-dollar driver according to the present embodiment, showing a state in which the clamping unit of the treatment section is open.
- FIG. 6 is a view for explaining an operation for opening the holding unit of the treatment section to hold the needle.
- FIG. 7 is a diagram for explaining the operation of holding and rotating the needle.
- the needle driver 1 includes an insertion section 2, an operation section 3 provided at a proximal end of the insertion section 2, and a treatment section 4 provided at a distal end of the insertion section 2.
- the insertion section 2 has an elongated columnar shape having a predetermined length.
- the operation unit 3 has a columnar shape having an axis coinciding with the axis of the insertion unit 2, and has a shape that allows an operator to hold it with one hand and perform an operation described later.
- the treatment section 4 is provided so as to extend in the extension direction at a predetermined angle with respect to the axial direction of the insertion section 2.
- the treatment section 4 has a holding unit 5.
- the operation unit 3 is provided with a rotation dial 7 as a rotation operation member provided so as to partially protrude from the long hole 6, and an open / close button 8 as an open / close operation device.
- the elongated holes 6 are provided at two places in the operation unit 3, and a part of the rotary dial 7 projects from each elongated hole 6.
- the rotation dial 7 and the open / close button 8 are made of resin or metal.
- Open / close button 8 is As described later, the surface force is pressed by the urging force of the elastic member toward the outer radial direction, and the open / close button 8 is urged in the direction in which the outer peripheral surface force of the operation unit 3 is also separated.
- the operation unit 3 has an operation unit cover 9 made of resin. Further, the insertion section 2 is covered with a metal case 10 such as stainless steel!
- the treatment section 4 provided at the distal end of the insertion section 2 includes two holding members 21a and 21b (hereinafter, sometimes collectively 21) constituting the holding unit 5.
- the first holding member 2 lb which is one of the two holding members 21, includes a shaft member 22 made of stainless steel and an annular member 23 which is a holding ring.
- the annular member 23 is made of stainless steel.
- the distal end of the shaft member 22 is inserted through a hole of the annular member 23 and is firmly fixed to the annular member 23 by means such as welding.
- a cylindrical portion 24 having a conical wedge receiving portion 24a and having a diameter larger than the diameter of the shaft member 22 is formed.
- the second holding member 21a which is the other of the two holding members 21, is made of stainless steel having a cylindrical shape, and has a first tube portion 25 on which the shaft member 22 can slide, and a first tube portion 25 thereof. And a second pipe portion 26 having an inner diameter larger than that of the second tube portion 26.
- a coil panel 27 made of stainless steel is provided in the second pipe section 26, and one end of the coil panel 27 is applied to a step 28 between the first pipe section 25 and the second pipe section 26. And the other end thereof abuts a step portion 29 between the shaft member 22 and the cylindrical portion 24, and the coil spring 27 engages with the second holding member so that the shaft member 22 passes through the coil panel 27. It is arranged in the member 21a.
- the steps 28 and 29 are panel receiving sections, respectively.
- the coil panel 27 is disposed in the second holding member 21a in a state where the coil panel 27 is compressed in the contracting direction. Therefore, the coil panel 27 constitutes an urging means for urging at least one of the two holding members 21 in a direction in which the at least one of the two holding members 21 always contacts the other.
- the treatment section 4 has a distal end cover 30, and the distal end cover 30 includes a first distal end cover 30a and a second distal end cover 30b.
- the first end cover 30a and the second end cover 30b are made of resin.
- a space is formed inside the first tip cover 30a and the second tip cover 30b so that a part of the treatment section 4 can be disposed.
- a hole 31 is formed in the first end cover 30a so that the treatment section 4 projects at a predetermined angle ⁇ 1 with respect to the axial direction of the insertion section 2. Yes.
- the conical tip of the wedge receiving portion 24 a is located inside the tip cover 30.
- a bevel gear having a flange portion protruding in the outer peripheral direction and having a plurality of teeth formed on the outer peripheral portion of the flange portion is formed. Therefore, the base end of the second tube portion 26 constitutes the bevel gear member 32.
- the two holding members 21 are arranged so that the flange portion of the bevel gear member 32 abuts on the inner surface of the hole 31 in the space formed between the first end cover 30a and the second end cover 30b. Is provided.
- the holding unit 5 is rotatable while sliding in the hole 31. Note that the flange portion functions as a stopper.
- a sheath mounting hole 33 is formed in the end force bar 30.
- a rotating power transmission member 41 in which an opening / closing transmission rod 42 is inserted is inserted into the sheath 10, and both ends of the rotation power transmission member 41 extend to the operation section 3 and the treatment section 4.
- a wedge member 43 made of stainless steel is fixed to an end of the opening / closing force transmission rod 42 on the treatment section 4 side.
- the wedge member 43 is provided slidably in the axial direction in the rotating power transmission member 41.
- An annular bevel gear member 44 is fixed to the outer peripheral portion of the distal end of the turning power transmission member 41 on the treatment section 4 side.
- the bevel gear member 44 is made of stainless steel or resin.
- the bevel gear member 44 and the bevel gear member 32 are positioned so that the teeth of the bevel gear member 44 and the teeth of the bevel gear member 32 mesh with each other, and are formed in the first end cover 30a and the second end cover 30b. It is placed in the space where In a state where the teeth of the bevel gear member 44 and the teeth of the bevel gear member 32 are engaged with each other, the treatment section 4 is set at a predetermined angle ⁇ 1 with respect to the axial direction of the insertion section 2 so that the respective The shape of the bevel gear member is designed.
- the outer diameter of the bevel gear member 44 is larger than the outer diameter of the sheath 10, so that the bevel gear member 44 does not come off from the distal end cover 30. Also, between the sheath 10 and the rotating force transmitting member 41, a sliding force such as a resin is provided so that the rotating power transmitting member 41 can freely rotate within the sheath 10. An annular member 45 as a bearing is provided.
- the wedge member 43 has an inclined portion having an inclined surface 43a having a predetermined angle with respect to the axis of the insertion portion 2 at the tip thereof.
- the wedge member 43 and the first holding member 21b are positioned so that the inclined surface 43a and the inclined surface 24a face each other.
- Rod-shaped opening / closing force transmission rod 42 Force As described later, when the opening / closing button 8 is opened / closed and moved toward the distal end of the insertion section 2, the wedge member 43 provided at the tip end of the opening / closing force transmission rod 42 is tilted. Since the inclined surface 43a of the portion presses the wedge receiving portion 24a of the first holding member 21b, the ring member 23 is moved in the axial direction of the first holding member 21b and away from the first tube portion 25. The first holding member 21b moves.
- the anti-slip coating may be anti-slip processing using an electric discharger, or may be a knurl that applies knurls to the respective contact surfaces.
- the surface may be made of metal and the powder of diamond or sapphire hard particles may be embedded in the metal.
- the treatment section 4 is in a direction substantially perpendicular to the plane of the contact surface between the annular member 23 for holding the needle and the first tube section 25, and with respect to the axial direction of the insertion section 2. It extends in the direction of the predetermined angle ⁇ 1.
- the operation unit 3 has a cylindrical shape as a whole, and has an operation cover 9 including a first operation unit cover 9a and a second operation unit cover 9b each having a semicircular cross-sectional shape.
- the operation cover 9 is provided at the distal end of the operation section 3 so as to cover the proximal end of the insertion section 2.
- the first operation unit cover 9a and the second operation unit cover 9b are fixed to each other by a fixing member such as a screw (not shown).
- the first operation unit cover 9a and the second operation unit cover 9b are made of resin such as plastic.
- a shaft member 51 provided in a direction orthogonal to the axis of the operation unit 3 is attached to the operation unit cover 9. It is rotatably inserted into the provided bearing hole 52.
- the rotating dial 7 is fixed to the shaft member 51 so as to function as a rotating shaft member of the rotating dial 7 as a rotating wheel.
- a bevel gear member 53 is further fixed to the shaft member 51.
- the rotary dial 7 is a disk member having a diameter such that it also becomes a metal or plastic force such as aluminum and protrudes from the long hole 6 of the operation unit 3 as shown in FIGS.
- the outer peripheral surface of the rotary dial 7 is subjected to processing such as knurls for preventing slippage.
- a button hole 54 is formed in the operation unit cover 9, and a metal rod member 55 as a push rod is inserted through the button hole 54.
- the open / close button 8 has a substantially rectangular parallelepiped shape, and the surface on the opposite side to the operation cover 9, that is, the surface on which the operator puts a finger has a slightly concave shape.
- a stainless steel coil panel 56 as a ⁇ ′ -resistant member is inserted so that the force rod member 55 passes through the coil panel 56. It is provided. Therefore, the open / close button 8 is always biased in a direction away from the operation cover 9.
- a wedge member 57 made of metal such as stainless steel is fixed to a tip of the rod member 55 inside the operation cover 9, and when the open / close button 8 is pushed by the operator's finger, The wedge member 57 also moves in the pushed direction.
- a sheath mounting hole 58 is formed at the tip end side of the operation cover 9.
- the sheath 10 is fixed to the operation cover 9 through the sheath mounting hole 58.
- a resin or the like having good slidability is provided between the sheath 10 and the rotation power transmission member 41 so that the rotation power transmission member 41 is rotatable within the sheath 10.
- An annular member 59 is provided as a sliding bearing, which is also powerful.
- the turning power transmission member 41 extends into the operation unit 3, and an annular bevel gear member 60 is provided inside the operation unit 3 on the outer peripheral portion on the base end side of the turning power transmission member 41. ing.
- the bevel gear member 60 and the bevel gear member 53 are positioned so that the teeth of the bevel gear member 60 and the teeth of the bevel gear member 53 mesh with each other, and are formed in the operation unit cover 9a and the operation unit cover 9b. It is arranged in the space where The bevel gear member 60 and the bevel gear member 53 are made of stainless steel or resin.
- the bevel gear member 60 and the bevel gear member 53 make the rotating diamond
- the rotation direction of the rotary dial 7 is changed to the rotation direction around the rotation axis of the rotation transmission member 41 orthogonal to the rotation axis of the rotary dial 7.
- the opening / closing force transmission rod 42 also extends inside the operation unit 3.
- a wedge member 61 is fixed to a base end of the opening / closing force transmission rod 42 inserted in the rotating power transmission member 41 on the operation unit 3 side.
- the wedge member 61 is provided slidably in the axial direction in the rotating power transmission member 41.
- an inclined portion having an inclined surface 6 la having a predetermined angle ⁇ ⁇ ⁇ ⁇ 2 with respect to the axis of the insertion portion 2 is formed at the distal end on the base end side of the operation portion 3.
- the predetermined angle ⁇ 2 is preferably, for example, 45 degrees or more.
- the wedge member 57 has an inclined portion having an inclined surface 57a having a predetermined angle 3 with respect to the axial direction of the rod member 55 at the distal end thereof. Further, the wedge member 57 and the wedge member 61 are positioned in the operation unit cover 9 such that the inclined surface 57a and the inclined surface 6la face each other in a parallel state.
- the rod member 55 moves so as to press the wedge member 57 against the wedge member 61.
- the wedge member 61 moves the opening / closing force transmission rod 42 toward the treatment section 4 along the axial direction of the insertion section 2. I do.
- the inclined surface 43a of the inclined portion of the wedge member 43 provided at the tip end of the opening / closing force transmission rod 42 is moved to the first holding member. Since the 2 lb wedge receiving portion 24a is pressed, the first holding member 21b moves in the axial direction of the first holding member 21b and in a direction in which the annular member 23 is separated from the first tube portion 25. .
- the bevel gear member 60 and the bevel gear member 53 are positioned so that the teeth of the bevel gear member 60 and the teeth of the bevel gear member 53 mesh with each other. It is arranged in the space formed in the area. Therefore, when the operator turns the rotary dial 7 with his / her finger, the turning power causes the turning power transmission member 41 to turn around the axis of the insertion section 2 via the bevel gear members 53 and 60. . The rotating force of the rotating power transmitting member 41 rotates the second holding member 21a around the axis of the treatment section 4 in the extending direction via the bevel gear members 44 and 32.
- the operation of the dollar driver 1 having the above configuration will be described.
- the turning force causes the turning power transmission member 41 to turn around the axis by the two bevel gear members 53 and 60.
- the rotating power transmission member 14 is rotated by the two bevel gear members 44 and 32 to rotate the holding unit 5 about the axis in the extending direction. Therefore, the operator can freely rotate the holding unit 5 by rotating the rotating dial 7. That is, in conjunction with the rotation of the rotary dial 7, the two holding members 21 rotate about the axis of the treatment section 4 in the extending direction.
- the wedge member 61 moves toward the treatment section 4 while sliding on each inclined surface by the movement of the wedge member 57.
- the opening / closing force transmitting rod 42 interlocks with the opening operation of the opening / closing button 7 as shown in FIGS. Goes to the tip side.
- the wedge member 43 slides in the extending direction of the first holding member 21b, and a gap is formed between the first holding member 21b and the second holding member 21a.
- the opening / closing force transmitting rod 42 advances and retreats, and transmits the opening / closing force to the treatment section 4.
- the surgeon applies a pressing force to the open / close button 8 against the urging force of the coil panel 27 only when opening the first holding member 21b and the second holding member 21a.
- the state in which the member 21b and the second holding member 21a are closed is maintained by the urging force, so that the operator can perform other operations without operating the open / close button 8, for example, the operation of the rotary dial 7.
- the needle 72 is held around the shaft of the treatment section 4 while holding the needle 72. It is possible to rotate. According to the above-described structure, the rotation angle is not limited when the needle 72 is held by the holding unit 5.
- the opening / closing force is transmitted to the holding unit 5 by the rod member, and the rotating force is transmitted to the pipe disposed substantially coaxially with the rod member. It is configured to be transmitted to the holding unit 5 by a member.
- the holding unit 5 maintains the holding state independently without applying a force from the outside, it is not necessary to perform the rotating operation while maintaining the holding force as in the related art.
- the surgeon can easily perform the rotation operation even when the holding target such as a needle is held by the holding unit 5, which is very convenient.
- the surgeon can concentrate on the rotation of the holding target and other operations.
- the rod member is arranged substantially coaxially with the pipe member to save space, the diameter of the insertion portion 2 is reduced, and the usability is improved for the reasons described later.
- a needle driver with good operability can be realized with a simple structure.
- FIGS. 8 to 12 are diagrams for explaining the structure of a dollar driver according to the second embodiment of the present invention.
- the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different items will be mainly described.
- this embodiment instead of the turning power transmitting member 41 and the opening / closing force transmitting rod 42 in the first embodiment described above, a rotation having both functions of the turning power transmitting member 41 and the opening / closing force transmitting rod 42 is provided.
- An opening / closing force transmitting member 142 is provided.
- FIG. 8 is a cross-sectional view of the tip portion including the treatment section 4 of the dollar driver 1 according to the present embodiment.
- FIG. 9 is a sectional view taken along line IX-IX of FIG.
- FIG. 10 is a cross-sectional view of a base end portion including the operation unit 3 of the dollar driver 1 according to the present embodiment.
- FIG. 11 is a sectional view taken along line XI-XI of FIG.
- FIG. 12 is a cross-sectional view of the base end portion including the operation unit of the needle driver when an operation for opening the treatment unit to hold the needle is performed.
- FIG. 13 is a cross-sectional view of the distal end portion showing a state where the holding unit of the treatment section of the needle driver is open.
- the insertion section 2 is covered with a metal sheath 110 such as stainless steel.
- a rod member 142 as a shaft member is inserted into the sheath 110 as described later.
- the treatment section 4 has a distal end cover 130, and the distal end cover 130 is Oa and the second tip cover 130b.
- a space is formed inside the first end cover 130a and the second end cover 130b so that a part of the treatment section 4 can be disposed.
- a hole 131 is formed in the first distal end cover 130a so that the treatment section 4 projects at a predetermined angle ⁇ 1 with respect to the axial direction of the insertion section 2.
- the conical tip of the wedge receiving portion 24 a is located inside the tip cover 30.
- a bevel gear having a flange portion protruding in the outer peripheral direction and having a plurality of teeth formed on the outer peripheral portion of the flange portion is formed. Therefore, the flange portion of the bevel gear member 32 is provided so as to abut on the inner surface of the hole 131 in the space formed between the first tip force bar 130a and the second tip cover 130b.
- a sheath mounting hole 133 is formed in the end cover 130.
- a shaft member 142 (hereinafter, referred to as a rotation opening / closing force transmission member) that is rotatable around the axis of the insertion portion 2 and slidable in the axial direction of the insertion portion 2 is inserted into the sheath 110 of the insertion portion 2.
- the distal end of the sheath 110 is attached to and fixed to the distal end cover 130 through the sheath mounting hole 133.
- a rotation receiving member 145 is housed so that it cannot move in the axial direction but can rotate around the axis.
- the rotation opening / closing force transmission member 142 is a rod member.
- the rotation receiving member 145 is made of stainless steel or resin, has a cylindrical shape, and has a bottom portion.
- the stainless steel rotating opening / closing force transmitting member 142 has a D-cut portion having a semicircular cross-section and a predetermined length in the axial direction at the distal end on the treatment section 4 side. 142a.
- the D cut portion 142a is slidably inserted into a D cut hole provided on the bottom surface of the rotation receiving member 145 on the distal end side.
- the D-cut portion 142a has at least one flat portion having a straight cross-sectional shape in a plane orthogonal to the axial direction of the rotation opening / closing transmission member 142.
- the D-cut hole has at least one flat portion whose cross-sectional shape on a plane orthogonal to the direction of the hole is a straight line, and the flat portion is formed so as to face the flat portion of the D-cut portion 142a. .
- the cylindrical rotation receiving member 145 has an opening on the side opposite to the insertion section 2 side. Therefore, a concave portion is formed on the distal end side, and stainless steel is formed in the concave portion.
- Wedge members 143 Are slidably inserted.
- the wedge member 143 has a flat surface portion on the base end side orthogonal to the axial direction, and an inclined surface 143a having a predetermined angle with respect to the axial direction on the distal end side.
- the distal end surface of the D-cut portion 142a is in contact with the proximal end surface of the wedge member 143.
- An annular bevel gear member 144 is fixed to the outer peripheral portion of the tip of the rotation receiving member 145 on the treatment section 4 side.
- the bevel gear member 144 and the bevel gear member 32 are positioned so that the teeth of the bevel gear member 144 and the teeth of the bevel gear member 32 mesh with each other, and are formed in the first end cover 130a and the second end cover 130b. Be placed in the space that will be! Puru.
- the D-cut portion 142a passes the wedge member 143 through the D-cut hole of the rotation receiving member 145 to move the wedge member 143 in the axial direction of the insertion portion 2. It moves forward so that it moves to the tip side along the direction.
- the rotation receiving member 145 is formed to be larger than the inner diameter of the sheath 10, so that the rotation receiving member 145 and the bevel gear member 144 are prevented from moving to the operation section 3 side.
- a sheath mounting hole 158 is formed at the front end side of the operation cover 9.
- the sheath 110 and the rotation opening / closing force transmitting member 142 extend into the operation section 3, and the sheath 110 is fixed to the operation cover 9 at the base end side of the insertion section 2.
- the rotation receiving member 162 is housed in the operation cover 9 such that it cannot move in the axial direction but can rotate around the axis.
- the rotation receiving member 162 is made of stainless steel or resin, has a cylindrical shape, and has a bottom surface. Inside the operation unit 3, the base end of the sheath 110 is in contact with the bottom surface of the rotation receiving member 162.
- the rotation opening / closing force transmitting member 142 has a D-cut portion 142b having a semicircular cross section at the base end on the operation unit 3 side.
- the D-cut portion 142b of the rotation opening / closing transmission member 142 inserted into the sheath 10 projects by a predetermined length from the rear end surface of the sheath 10 to the base end side.
- the D-cut portion 142b is slidably inserted into a D-cut hole provided in the rotation receiving member 162 on the base end side.
- the D-cut portion 142b has at least one flat portion having a straight cross-sectional shape in a plane orthogonal to the axial direction of the rotation opening / closing force transmission member 142.
- the D-cut hole provided in the rotation receiving member 162 is a surface orthogonal to the direction of the hole. Has at least one flat portion whose cross-sectional shape is a straight line, and the flat portion is formed so as to face the flat portion of the D-cut portion 142b.
- the D-cut hole has at least one linear portion in a cross-sectional shape orthogonal to the direction of the hole, and the D-cut portion faces the linear portion. It has a straight part. That is, as a D-cut hole provided in the rotation receiving member 145 and the rotation receiving member 162 and a sectional shape engaging with the shape of the D-cut hole, the rotation opening / closing force transmitting member 142 has predetermined lengths at both ends. The force having the D-cut portions 142a and 142b throughout the holes of the rotation receiving member 145 and the rotation receiving member 162 are not limited to the D-cut holes.
- the transmission member 142 has a cross-sectional shape portion that engages with the shape of the non-circular hole, and the rotation receiving member 145 and the rotation receiving member 162 may be engaged.
- the rotation receiving member 162 has an opening on the side opposite to the insertion section 2, a concave portion is formed on the base end side, and a metal force such as stainless steel is formed in the concave portion.
- a wedge member 161 is slidably inserted.
- the wedge member 161 has a flat surface on the distal end side orthogonal to the axial direction, and an inclined surface 161a having a predetermined angle with respect to the axial direction on the proximal end side.
- An annular bevel gear member 160 is fixed to an outer peripheral portion on the base end side of the rotation receiving member 162.
- the bevel gear member 160 and the bevel gear member 53 are positioned so that the teeth of the bevel gear member 160 and the teeth of the bevel gear member 53 mesh with each other, and are formed in the operation unit cover 9a and the operation unit cover 9b. It is placed in the space where
- the wedge member 161 has an inclined portion having an inclined surface 161 a having a predetermined angle with respect to the axis of the insertion portion 2 at the distal end on the base end side of the operation portion 3.
- the wedge member 57 and the wedge member 161 are positioned so that the inclined surface 57a and the inclined surface 161a are in contact with each other.
- the rod member 55 moves so as to press the wedge member 57 against the wedge member 161.
- the bevel gear member 160 and the bevel gear member 53 are positioned so that the teeth of the bevel gear member 160 and the teeth of the bevel gear member 53 mesh with each other, and the operation unit cover 9a and the operation unit cover 9b It is located in the space formed inside. Therefore, the operator turns the rotation dial 7 with the finger. Then, the rotating force causes the rotation opening / closing transmission member 142 to rotate around the axis of the insertion portion 2 via the bevel gear members 53 and 160 and the rotation receiving member 162. The rotating force of the rotation opening / closing force transmission member 142 rotates the second holding member 2 la around the axis of the treatment section 4 via the bevel gear members 144 and 32. At this time, the ring member 23 of the first holding member 21b is in close contact with the second holding member 21a so as to be pressed by the coil panel 27. Then, the holding members 21a and 21b of the holding unit 5 are rotated together.
- the turning force turns the turning opening / closing force transmitting member 142 around its axis by the two bevel gear members 53 and 160.
- the transmission of the rotational power is performed because the flat portions of the two D-cut portions provided at both ends of the rotary opening / closing force transmitting member 142 and the flat portions of the two D-cut holes are in contact with each other. This is performed by rotating the transmission member 142 and the rotation receiving members 145 and 162 as a body.
- the rotation of the rotation opening / closing force transmitting member 142 causes the holding unit 5 to rotate by the two bevel gear members 144 and 32. Therefore, the operator can freely rotate the holding unit 5 by rotating the rotating dial 7. That is, the rotation of the rotary dial 7 causes the two holding members 21 to rotate about the axis of the treatment section 4.
- the wedge member 161 is moved toward the treatment section 4 while sliding on the respective inclined surfaces 57a and 161a by the movement of the wedge member 57 as shown in FIG. Moving.
- the D-cut portion 142b which is the opening / closing force transmission shaft, moves toward the distal end in the sheath 110 through the D-cut hole, which is the opening / closing force transmission hole of the rotation receiving member 162.
- the rotation opening / closing force transmitting member 142 moves toward the base end of the insertion section 2, and further, the first holding member 21 b and the second holding member 21 b are moved by the coil panel 27.
- the holding member 21a is closed. That is, the rotation opening / closing force transmitting member 142 has umbrellas at both ends.
- a rotating opening / closing force transmitting member 142 is configured to be capable of moving forward / backward at a predetermined distance between the two bevel gears and transmitting the opening / closing force while transmitting the rotating force of the gears, thereby constituting a rotating forward / backward movable mechanism.
- the method for holding the needle is the same as the method described in the first embodiment, and a description thereof will not be repeated.
- the opening and closing force and the rotating force are transmitted to the clamping unit by the rod members having the D-cut portions at both ends. It is configured .
- the opening and closing force transmitting mechanism and the rotating power transmitting mechanism are integrated, the diameter of the insertion portion 2 can be further reduced as compared with the configuration of the first embodiment. Therefore, a needle driver with good operability can be realized with a simple structure.
- FIG. 14 is a schematic diagram showing a state in which a dollar driver approaches an operation site via a trocar according to the two embodiments described above.
- the trocar 201 is attached to the body cavity 200, and various operations are performed while observing the inside 202 of the body cavity using the endoscope 203.
- the needle driver 1 and the endoscope 203 each have a limit on the inner diameter of the hole of the force trocar 201 inserted into the body cavity 202 through the trocar 201. According to the present invention, since the insertion portion 2 can be reduced in diameter, the insertion portion 2 can be variously moved within the hole of the trocar 201.
- the movable range 205 of the treatment section 4 in the body cavity is widened, so that the operator can easily perform the operation and has good usability.
- the insertion portion can be made thinner than the one-dollar driver having the configuration according to the first embodiment, so that the inside of the body cavity of the treatment section 4 can be reduced.
- the movable range 205 becomes wider.
- a needle driver can be realized with a simple structure with good operability.
- FIG. 15 is an external perspective view of the dollar driver viewed from one oblique front side according to the third embodiment.
- FIG. 16 is a front view of the dollar driver of this embodiment
- FIG. 17 is a left side view of the needle driver of this embodiment as viewed from one side (left side)
- FIG. It is a right side view which looked at the other side (right side) force of the dollar driver.
- the dollar driver 301 includes an insertion portion 302, an operation portion 303 provided at one end (base end side) of the insertion portion 302, and an insertion portion
- the main part is composed of the treatment section 304 provided so that the other end of the 302 also extends.
- the insertion portion 302 has a substantially cylindrical shape having a predetermined length.
- the operation section 303 is a member having a substantially rectangular parallelepiped shape, which is integrally disposed coaxially with the long axis of the insertion section 302 at the base end side of the insertion section 302, and is held by the operator with one hand. It is a shape that can be operated later.
- the operation unit 303 includes an opening / closing button 305 as an opening / closing operation member for opening / closing the treatment unit 304, and an operation for changing the angle of the extending direction of the treatment unit 304.
- An angle variable lever 306 as an angle changing operation member and a rotation dial 307 as a rotation operation member for performing a rotation operation of the treatment section 304 are provided.
- the base end of the open / close button 305 is urged in a direction away from the exterior of the operation unit 303 by the urging force of a panel described later. Further, one end on the proximal end side of a pulling wire described later is locked by a member connected to the open / close button 305.
- a force against the urging force of the panel in the treatment section described later is applied to the pulling wire!
- the configuration of the open / close button 305 will be described later.
- the treatment section 304 provided so that one end of the insertion section 302 also extends has a clamping section 308 on the distal end side, and the treatment section 304 extends in the axial direction of the clamping section 308, ie, the extension of the treatment section 304.
- the direction is variable within a predetermined angle range with respect to the axial direction of the insertion section 302, for example, within a range of 0 to 90 degrees.
- the needle driver 301 is provided with angle changing means for changing the angle of the processing section 304 in the extending direction with respect to the axis of the insertion section 302.
- FIG. 19 is a view for explaining a state in which the dollar driver 301 of FIG. 15 is gripped.
- the operator touches the base between the thumb FF and the index finger IF to the palm rest member 301A, and applies the middle finger MF to the two protrusions 3 of the finger rest member 301X made of resin. By placing it between 01B and 301C, the surgeon can hold the dollar driver 301 firmly and stably.
- the operator can operate the rotary dial 307 and the angle variable lever 306 with the index finger IF while holding the dollar driver 301.
- the rotation dial 307 and the angle variable lever 306 are moved by the index finger IF.
- the insertion section 302 can be operated in the direction of the distal direction IFF and the proximal direction IFB. further
- the open / close button 308 can be operated by the thumb FF.
- the palm-holding member 301A also extends obliquely with the lateral force of the operation unit 303 slightly directed toward the proximal end, the palm-holding member 301A and the palm are in close contact with each other when gripped. Accordingly, the surgeon can grasp the dollar driver 301 with force and force.
- FIGS. 20 to 23 are views for explaining the structure of the distal end portion including the treatment section 304 of the needle driver 301.
- FIG. 20 to 23 are views for explaining the structure of the distal end portion including the treatment section 304 of the needle driver 301.
- FIG. 20 is a front view of the distal end portion including the treatment section 304 of the needle driver 301.
- FIG. 21 is a front view of the distal end portion of the treatment section 304 in a state where the holding section 308 is open.
- FIG. 22 is a cross-sectional view of the distal end portion including the treatment section 304 along the axial direction of the needle driver 301.
- FIG. 23 is a cross-sectional view of the distal end portion along the axial direction of the needle driver 301 with the holding section 308 of the treatment section 304 opened.
- FIG. 24 is a perspective view for explaining the internal structure of the distal end portion.
- FIG. 25 is a sectional view taken along line AA of FIG.
- the insertion section 302 has a stainless steel pipe, that is, a sheath 311 that is a cylindrical member.
- a distal end nozing member 312 made of stainless steel is fixed to the distal end side of the sheath 311, that is, the treatment section 304 side.
- the distal end and the housing member 312 have a cylindrical fitting portion fitted to the inner peripheral surface of the sheath 311 on the proximal end side of the distal end and the housing member 312, that is, on the sheath 311 side.
- a central portion of the distal end housing member 312 has a space inside, and has a channel-shaped portion having a channel-shaped cross-section orthogonal to the axis of the insertion portion 302.
- the distal end housing member 312 has two arms 312 extending distally on the distal end side (that is, the holding portion 308 side) so as to sandwich an internal space communicating with the internal space in the channel-shaped portion. &, 312b.
- a bending force transmission pipe 315 made of stainless steel is passed through the sheath 311 as a shaft member.
- the bending force transmission pipe 315 is a member for changing the angle of the treatment section 304 in the extending direction so that the treatment section 304 is curved.
- a bending force transmission pipe 315 is inserted through the sheath 311, and the bending force transmission pipe 31 1 Inside 5, a stainless steel rotating power transmission pipe 313 as a shaft member is inserted.
- the turning power transmission pipe 313 is a pipe for transmitting turning power to the tip.
- a stainless steel pulling wire 314 for opening and closing operation of a holding portion 308 described later is inserted inside the rotating power transmission pipe 313.
- a bending force transmission pipe 315, a turning power transmission pipe 313, and a pulling wire 314 are coaxially arranged inside the sheath 311.
- the pulling wire 314 is a wire member that is pulled toward the operation section 303 in order to perform the opening operation of the holding section 308, and is formed by knitting a thin stainless wire and is flexible.
- a fluorine resin may be coated on the surface of the wire in order to reduce the sliding resistance inside and facilitate the reciprocation.
- the distal housing member 312 is fixed to the sheath 311 by a set screw 316 made of stainless steel. Further, the distal end of the sheath 311 and the distal housing member 312 are fixed with an adhesive, for example, an epoxy resin-based adhesive.
- the turning power transmission pipe 313 is inserted so as to be rotatable and slidable about the axis of the turning power transmission pipe 313, and the bending force transmission pipe 315 is capable of moving forward and backward in the axial direction of the bending force transmission pipe 315. It is communicated.
- a turning power transmission coil 317 made of stainless steel is fixed.
- the turning power transmission coil 317 is a flexible coil for transmitting turning power to the distal end portion of the insertion portion 302.
- a traction wire 314 is inserted into the turning power transmission coil 317. Since the turning power transmission pipe 313 is made of metal, the turning force by the turning operation of the turning dial 307 in the operation section 303 can be transmitted to the turning power transmitting coil 317 reliably.
- the rotating power transmission coil 317 connected to the rotating power transmission pipe 313 has a triple wound close contact structure configured by stacking three coils.
- a second coil with a winding direction opposite to the winding direction of the bottom coil is provided so as to be superimposed on the bottom coil, and a second coil is arranged so as to be superimposed on the bottom coil
- a third coil with a winding direction opposite to the winding direction (same winding direction as the bottom coil) is provided!
- Both ends of the power transmission coil 317 are brazed and cut after brazing. It is. As a result, the thickness at both ends is smaller than the thickness at the center. Both ends are fixed to the rotating power transmission pipe 313 and the rotating portion base member 325 by brazing, respectively.
- the bending force transmission pipe 315 is connected to a stainless steel bending portion base member 320 via a joint member 318, which is a stainless steel connecting member, and a stainless steel link member 319.
- the proximal end of the joint member 318 is configured so that the power transmission pipe 313 is slidably inserted in the axial direction and around the axis of the power transmission pipe 313.
- the bending force transmission pipe 315 is fitted into the base end of the joint member 318 and is connected to the joint member 318 by bonding, the bending force transmission pipe 315 extends along the axial direction of the insertion portion 302. As it moves forward and backward, the joint member 318 also moves in the same direction.
- FIG. 26 is a perspective view for explaining the internal structure of the distal end portion with the distal end housing member 312 omitted.
- the distal end nozing member 312 is fitted to the inner peripheral surface of the sheath 311 at the base end side of the distal end nozing member 312.
- a part of the bending force transmission pipe 315, a rotating power transmission coil 317, a joint member 318, a link member 319, and a part of the bending portion base member 320 are disposed in the center and the front end of the tip housing member 312.
- a curved portion base member 320 is disposed between the two arms 312a and 312b of the distal end housing member 312, and the curved portion base member 320 and the distal end nozing member 312 are connected by pins 324.
- the bending portion base member 320 and the distal end nozing member 312 are connected by fitting a pin 324 that fits into the two arms 312a and 312b into a hole provided in the bending portion base member 320.
- the bending portion base member 320 is rotatable around the axis of the pin 324 as a rotation center.
- the joint member 318 has two arms 318a and 318b on the distal end side.
- the link member 319 is a rod member having holes at both ends.
- the curved portion base member 320 has two arm portions 320a and 320b on the base end side. Note that the curved portion base member 320 has a cylindrical portion 320c on the distal end side, and the base end portion of the rotating portion base member 325. Force Fits inside cylindrical part 320c.
- the two arms 320a, 320b of the curved portion base member 320 Between the two arms 320a, 320b of the curved portion base member 320, the two arms 320a, 320b and the hole at the tip of the link member 319 pass through so as to sandwich the tip of the link member 319.
- the bending portion base member 320 and the link member 319 are connected by the pin 321.
- the pin 321 is fixed to the end of the curved portion base member 320 by laser welding, but the link member 319 is rotatable around the axis of the pin 321 as a rotation center.
- a pin 322 that passes through the two arms 318a and 318b and the hole in the base end of the link member 319 so that the base end of the link member 319 is sandwiched between the two arms 318a and 318b.
- the pin 322 is fixed at the end of the joint member 318 by laser welding.
- the force link member 319 is rotatable about the axis of the pin 322 as a rotation center.
- FIG. 27 is a front view of the distal end portion showing a state in which the treatment section 304 is bent 90 degrees with respect to the axis of the insertion section 302.
- FIG. 28 is a cross-sectional view of the distal end portion showing a state in which the treatment section 304 is bent 90 degrees with respect to the axis of the insertion section 302.
- the extension direction of the treatment section 304 is 90 degrees with respect to the axis of the insertion section 302.
- the angle is smaller than degrees.
- the pins 321, 322, 324 are each made of stainless steel.
- a cylindrical rotating portion base member 325 rotates around the axis of the rotating portion base member 325 as a rotation center. Inserted as possible.
- the rotating portion base member 325 has an opening at the distal end and a bottom at the proximal end.
- a hole is formed in the bottom portion on the base end side of the rotating portion base member 325, and the distal end portion of the turning power transmission coil 317 is inserted into the hole and fixed by brazing as described above.
- the turning power transmission coil 317 is fixed to the turning power transmission pipe 313 on the base end side by brazing as described above, and is also fixed to the turning portion base member 325 on the distal end side by brazing. .
- the distal end portion of the rotating power transmission coil 317 is inserted into the bottom portion on the base end side of the rotating portion base member 325 and brazed.
- the base end of the turning power transmission coil 317 is inserted into a step formed inside the distal end of the turning power transmission pipe 313 and brazed. Therefore, when the rotating power transmission pipe 313 rotates around the axis of the rotating power transmission pipe 313, the rotating power transmission coil 317 rotates so as to transmit the amount of rotation of the rotating power transmission pipe 313 to the treatment section 304.
- the base member 325 also rotates.
- the space between the proximal bottom of the rotating base member 325 and the proximal bottom of the rotating base member 325 is Are separated by a predetermined distance dl. This is because, as the treatment section 304 is curved, the proximal bottom of the rotating base member 325 and the proximal bottom of the rotating base member 325 approach each other. Accordingly, when the treatment section 304 is bent to the maximum (for example, up to 90 degrees) as described later, the base bottom of the rotating section base member 325 and the base bottom of the rotating section base member 325 come into contact with each other. No frictional resistance!
- a predetermined distance dl is provided between the base bottom of the rotating base member 325 and the bottom base of the rotating base member 325 in advance. If the distance dl is set to 0 (zero), the frictional resistance increases. The movement of the rotating section base member 325 with respect to the bending section base member 320 and the treatment section 304 in the long axis direction due to the bending operation is suppressed. Is possible.
- a holding section 308 including two holding members for holding the needle is provided.
- One is a movable holding piece 326, and the other is a fixed holding piece 331.
- the rotating portion base member 325 is made of stainless steel. Inside the rotating portion base member 325, a part of one of the movable holding pieces 326 of the holding portion 308 of the treatment section 304 is inserted through the opening on the front end side. Has been inserted.
- the movable holding piece 326 is a cylindrical member made of stainless steel and having an inward flange portion on the base end side.
- the bottom of the movable holding piece 326 on the base end side is provided with a hole through which the pulling wire 314 can pass.
- a distal enlarged portion 314a formed by melting the distal end portion is formed at the distal end of the pulling wire 314, and the distal enlarged portion 314a is fixed inside the bottom of the movable holding piece 326. Yes. Accordingly, when the pulling wire 314 is pulled toward the operation section 303, the movable holding piece 326 also moves toward the operation section 303.
- FIG. 29 is a perspective view for explaining the internal structure of the distal end portion in which the rotating portion base member 325 is omitted. As shown in FIG. 29, the panel 333 is provided inside the rotating portion base member 325 in a compressed state.
- a part of the stainless steel movable holding piece 326 which is one holding member, is fitted to the distal end side of the rotating portion base member 325.
- the movable holding piece 326 has a substantially cylindrical shape having two long holes 326a and 326b, and the base end has the bottom as described above. An inward flange is formed at the bottom.
- the distal end of the movable holding piece 326 has a flange 326c.
- the front end side surface of the flange portion 326c at the distal end of the movable holding piece 326 has a flat portion for holding the needle. In this case, the plane of the flat portion is the axis of the movable holding piece 326 having a substantially cylindrical shape. Orthogonal to.
- a stainless steel fixing holding piece 331 which is another holding member, is fixed by a stainless steel pin 330.
- the fixed holding piece 331 is a columnar member having a flange 331a at the tip.
- the fixed holding piece 331 and the rotating portion base member 325 are fixed by a pin 330 penetrating the distal end of the rotating portion base member 325 and the base end of the fixed holding piece 331.
- the pin 330 is slidably fitted into the two elongated holes 326a and 326b of the movable holding piece 326.
- the pin 330 is fixed to the rotating portion base member 325 by laser welding at an end.
- the fixed holding piece 33 which is a holding piece on the distal end side, is annular and has a flat portion parallel to the flat portion of the tip portion of the movable holding piece 326.
- the button 333 presses the bottom of the movable holding piece 326, but the front end side of the flange 326 c of the movable holding piece 326 has the fixed holding piece 331. Since the flange portion 331a is in contact with the base side surface and cannot be extended any further, it remains in a compressed state. Therefore, the open / close button 305 of the operation unit 303 is When not operated, the planes of the movable holding piece 326 and the fixed holding piece 331 are pressed so as to be in close contact with each other, so that the needle can be held tightly.
- the movable holding piece 326 moves toward the base end from the fixed holding piece 331, so that the movable holding piece 326 and the fixed holding piece 331 are held between the respective planes.
- the needle can be released and the planes can be separated to pinch the needle.
- the flange portion 331a of the fixed holding piece 331 and the flange portion 326c of the movable holding piece 326 are formed to be thin, the needle can be easily brought into contact between the respective flat portions. Therefore, regardless of the bending angle of the holding portion 308 or the state of the body cavity wall, the operator can easily hold the needle.
- the needle is pinched so as to be pinched between the flat portion of the fixed holding piece 331 and the flat portion of the movable holding piece 326 in accordance with the opening / closing operation of the open / close button 305. Therefore, the panel 333 constitutes a part of the urging means for constantly urging at least one of the two holding members in the direction in which the two holding members come into close contact with the other.
- the surfaces of the flat portion of the fixed holding piece 331 and the flat portion of the movable holding piece 326, which are the holding surfaces for holding the needle, are subjected to non-slip processing.
- non-slip processing include electric discharge processing, knurling, and processing of spraying diamond fine powder on metal plating.
- the cylindrical portion on the base end side of the fixed holding piece 331 is inserted into the hole of the movable holding piece 326, and the cylindrical portion is fixed to the rotating portion base member 325.
- 331 has a fixed positional relationship with respect to the rotating portion base member 325.
- the fixed holding piece 331 also has a positional relationship fixed to the bending portion base member 320 in the long axis direction.
- the open / close button 305 is opened, that is, when the open / close button 305 is pressed, and the pulling wire 314 is pulled in accordance with the pushed amount, the movable holding piece movable to the operation unit 303 side.
- the movable holding piece 326 separates the flange portion 326c from the flange portion 331a of the fixed holding piece 331 while resisting the force applied in the direction in which the panel 333 extends. Move to the operation unit 303 side. Accordingly, when the pull wire 314 is pulled, the movable holding piece 326 moves in the direction shown by the arrow in FIG. 21 by the amount by which the pull wire 314 is pulled.
- the movable holding piece 326 is moved from the fixed holding piece 331 located at the distal end of the treatment section 304 by opening the open / close button 305. Move in the direction away from you.
- the spring 333 is in a more compressed state than the state in which the open / close button 305 shown in FIG. 22 is not opened, and the push-back force is applied to the open / close button 305. Hang on.
- the pulling wire 314 is pulled toward the treatment section 304 by the biasing force of the panel 333 in the direction in which the movable holding piece 326 comes into close contact with the fixed holding piece 331 by the extension force of the panel 333. .
- the needle located between the flat portion of the fixed holding piece 331 and the flat portion of the movable holding piece 326 is held in the holding portion 308.
- the rotating power transmission pipe 313 which is a shaft member rotates around the shaft as a rotation center. Then, the turning power transmission coil 317 fixed to the turning power transmission pipe 313 turns, and the turning portion base member 325 fixed to the turning power transmission coil 317 also turns. Since the turning power transmission pipe 313 turns according to the amount by which the turning dial 307 is turned, the turning amount force is transmitted to the treatment unit 304 according to the amount by which the turning dial 307 is turned. As a result, the fixed holding piece 331 and the movable holding piece 326 constituting the holding section 308 rotate together with the rotation section base member 325 and rotate together with the rotation section base member 325.
- the distal end portion including the treatment section 304 is curved as shown in FIG.
- the bending force transmission pipe 315 pushes the joint member 318 to the distal end side, and as a result, the joint member 318 Press link member 319.
- the pushed link member 319 further pushes the bending portion base member 320. Since the bending portion base member 320 is connected to the distal end nozing member 312 by the pin 324, the bending portion base member 320 It turns around 324 as a turning center.
- the amount of bending of the treatment section 304 ie, the bending angle
- FIG. 30 is an external perspective view of the operating section 303 of the needle driver 301 as viewed from a diagonal front view
- FIG. 31 is a cross-sectional view of the operating section 303 along the axial direction of the needle driver 301
- FIG. 33 is a cross-sectional view of the operation section 303 in which a portion surrounded by a circle A in FIG. 17 is enlarged.
- FIG. 33 is an operation section 303 provided around the rotary dial 307 in which the exterior member of the operation section 303 is omitted.
- FIG. 30 is an external perspective view of the operating section 303 of the needle driver 301 as viewed from a diagonal front view
- FIG. 31 is a cross-sectional view of the operating section 303 along the axial direction of the needle driver 301
- FIG. 33 is a cross-sectional view of the operation section 303 in which a portion surrounded by a circle A in FIG. 17 is enlarged.
- FIG. 33 is an operation section 303 provided around the rotary dial 307 in which
- FIG. 34 is a perspective view of each constituent member in the operation unit 303 as viewed obliquely from below
- FIG. 35 is a perspective view of the outer member of the operation unit 303.
- FIG. 36 shows a part of the exterior member of the operation unit 303, and each constituent member in the operation unit 303 is obliquely measured on the proximal side.
- 37 is a perspective view seen from the side, and FIG. 37 shows a cut-away portion of the operation unit 303 along a direction orthogonal to the axis of the needle driver 301.
- Rear view, FIG. 38, the operation unit 303 a side oblique one measuring Hokakarami was perspective view
- FIG. 39 is a front view of the needle driver 301 from the distal end side.
- the operation section 303 is disposed on the base end side of the insertion section 302 coaxially with the long axis of the insertion section 2 and covers an exterior member 327 having a substantially rectangular parallelepiped shape.
- the exterior member 327 is formed by integrally fitting three metal members such as aluminum into one another, and includes a distal-side exterior member 327a that forms a distal-side (insertion side 302) exterior, and a rotary dial. 307, a body exterior member 327b having an open / close button 305 disposed on the surface thereof, a finger hook member 301X disposed on the surface thereof, and a rotation dial 307 and an open / close button 305 of the body exterior member 327b provided.
- a cover exterior member 327c fitted on the opposite side to the surface of the cover.
- the distal-side exterior member 327a and the main body exterior member 327b are fixed with fixing screws 328a.
- the fixing screws 328b are fixed to the front-side outer member 327a. It is fixed to the member 327b by a fixing screw 328c.
- the exterior member 327 may be a resin.
- a hole for a space in which mechanisms around the thruster 353 and the angle variable lever 306 to be described later are arranged is formed in the distal end side exterior member 327a, and recessed step portions are formed on both side surfaces.
- 327A is formed up to an intermediate portion where the base force is also directed to the distal side (see FIG. 35. In FIG. 35, only the step portion 327A on one side surface of the distal exterior member 327a is shown). .
- the body exterior member 327b includes two arms 327B extending to the distal end side (see Fig. 38. In Fig. 38, only the arm 327B on one side of the body exterior member 327b is shown).
- the two arms 327B are provided on both sides on the distal end side, and are fitted to the two steps 327A of the distal end side exterior member 327a, respectively.
- the angle variable lever 306 can also protrude each side force on portions that are both side surfaces of the operation portion 303, and A long groove 303a for tilting operation is formed (see FIG. 38).
- the two long grooves 303a are formed on one side surface of the operation section 303.
- a step 340 is formed at the base end of the main body exterior member 327b.
- the step portion 340 has a seat portion 340a with which the dial head 309a of the adjustment dial 309 made of resin is in contact.
- An elongated hole 341 is formed in the seat 340a at substantially the center of the step 340 along the long axis direction of the operation unit 303.
- the long hole 341 is a hole communicating the step portion 340 and the groove portion 342.
- the adjustment dial 309 is inserted from the side of the step portion 340, and is screwed into the female screw hole of the protrusion 301Y in which the screw portion of the adjustment dial 309 is formed. 301A is fixed to the adjustment dial 309, and the palm holder 301A is fixed to the body exterior member 327b.
- the length of the body exterior member 327b By adjusting the position of the adjustment dial 309 in the long hole 341 in the axial direction, the position of the palm holder 301A in the long axis direction of the body exterior member 327b is adjusted according to the size of the surgeon's hand. be able to.
- the dial head 309a of the adjustment dial 309 has an outer diameter longer than the width in the width direction of the operation unit 303 so that both sides of the operation unit 303 also protrude in order to easily grip the outer peripheral portion. are doing.
- the distal end side exterior member 327a has a cylindrical connecting portion 327aa formed so as to protrude toward the distal end side.
- the distal end side exterior member 327a is formed with a hole communicating with the opening on the distal end side of the cylindrical connecting portion 327aa.
- the hole has a step in the middle from the distal end to the proximal end.
- a thread groove is formed on the outer peripheral surface of the connecting portion 327aa.
- a substantially annular holding ring 310 having a thread groove engraved on the inner peripheral surface is provided so as to cover the connecting portion 327aa.
- the press ring 310 made of aluminum has an opening on the tip side.
- the proximal end portion of the sheath 311 of the insertion portion 302 is inserted into the distal end side exterior member 327a so as to pass through the opening of the holding ring 310 and the opening of the connecting portion 327aa.
- the screw groove on the inner peripheral surface and the screw groove on the outer peripheral surface of the connecting portion 327aa are screwed together, thereby being fixed to the connecting portion 327aa.
- the sheath 311 has a substantially cylindrical sheath end member 311a adhered to the outer periphery of the base end portion, and the sheath end member 31la and the sheath end member It is inserted around the axis of 31 la so that it can rotate.
- the sheath end member 311a is made of aluminum.
- a hole (opening) having a hole diameter substantially the same as the outer diameter of the sheath 311 is formed on the surface on the distal end side of the pressing ring 310.
- the distal end surface of the presser ring 310 forms an inward flange, and the sheath 311 a of the sheath 311 abuts on the inward flange so that the sheath 311 forming the exterior of the insertion portion 302 becomes the distal end exterior member. Do not fall out of 327a.
- the presser ring 310 moves to the proximal end side as the screwing amount with the connecting portion 327aa increases.
- An O-ring 345 made of silicon is provided between the press ring 310 and the sheath end member 31 la.
- the inward flange surface of the press ring 310 presses the sheath end member 31 la of the sheath 311 toward the base end via the O-ring 345.
- the sheath end member 31la fixed to the base end portion of the sheath 311 is formed by a resilient force of the O-ring 345 so that the base end surface of the sheath end member 31la is formed in the hole of the front end side exterior member 327a. It is in contact with the tip surface.
- the insertion section 302 is firmly fixed to the operation section 303 without shaking.
- the O-ring 345 is a sheath to the extent that the insertion portion 302 can be rotated around the axis of the insertion portion 302 with respect to the operation portion 303 while the insertion portion 302 is firmly fixed to the operation portion 303.
- the end member 311a is pressed with a predetermined pressing force. This is because the distance between the sheath end member 311a and the inner surface of the distal end of the retaining ring 310 when the inner surface of the distal end of the retaining ring 310 comes into contact with the distal end of the connecting portion 327aa is determined by such a predetermined value that the O-ring 345 is compressed. This is achieved by setting the distance to generate the pressing force.
- a passive bevel gear member 350 made of a synthetic resin such as polyacetal is bonded and fixed to the base end of the rotating power transmission pipe 313 through which the traction wire 314 is inserted.
- the rotating power transmission pipe 313 is arranged such that the center of the cross section in the direction orthogonal to the longitudinal axis of the rotating power transmitting pipe 313 and the rotation axis of the passive bevel gear member 350 overlap each other. It is press-fitted and fixed in the hole formed in the longitudinal direction of.
- the end of the passive-side bevel gear member 350 having gears faces the distal end, and the shaft portion is rotatably supported by a substantially cylindrical bearing 352 so as to be rotatable around the axis.
- a bearing 352 made of aluminum or resin is fixedly fitted to the distal end side exterior member 327a.
- a rotating dial 307 is provided on a step formed on one surface of the distal end side exterior member 327a.
- a substantially disk-shaped bearing plate 349 is provided on a surface of the rotary dial 307 made of aluminum or resin on the side of the operation unit 303. This bearing plate 349 is fixed to the distal end side exterior member 327a.
- a wheel shaft 349a protrudes from a center portion of a surface of the bearing plate 349 made of aluminum or resin opposite to the surface on the side of the rotary dial 307.
- the bearing plate 349 is formed with a hole passing through the center of the wheel shaft 349a from the center of the surface on the rotating dial 307 side.
- An active bevel gear member 351 made of a synthetic resin such as polyacetal is inserted into the hole of the bearing plate 349 so as to be rotatable around the axis of the active bevel gear 351. Further, the end of the active side bevel gear member 351 on the side opposite to the side having the gear is provided with a rotary dial 30. 7 is fitted and fixed in a part of a hole 307a formed at the center of the rotation shaft. That is, the rotary dial 307 and the active-side bevel gear member 351 are integrated.
- the bearing plate 349 is provided so that the gear of the active-side bevel gear member 351 meshes with the gear of the passive-side bevel gear member 350.
- the rotating dial 307 when the rotating dial 307 is rotated in a predetermined direction by the operator, the rotation is transmitted to the active bevel gear member 351 and the rotating power is transmitted to the passive bevel gear by the meshing action. It is transmitted to member 350. That is, when the rotary dial 307 is rotated around an axis orthogonal to the longitudinal direction of the operation unit 303, the rotating power transmission pipe 313 is driven by the passive bevel gear member 350 via the active bevel gear member 351. Is transmitted around the longitudinal axis. As a result, the rotating power transmission pipe 313 transmits the rotating power to the rotating power transmission coil 317 (see FIG. 9) fixed to the end of the rotating power transmission pipe 313, and the holding portion 308 (see FIG. 1) is rotated. You.
- the bearing plate 349 also has a function as a protection plate for preventing abrasion deterioration of the rotating dial 307 and the distal-side exterior member 327a due to friction or the like generated by the rotation. . Further, the outer periphery of the rotary dial 307 protrudes from both side surfaces of the operation unit 303 as described above. Therefore, in the unlikely event that the rotating dial 307 is handled by an operator or a nurse, the force of pulling out the rotating dial 307 by the end force on the side opposite to the side having the gear of the active bevel gear member 351 is also large. May be added. As a countermeasure, a bearing plate 349 is provided on a side surface of the rotary dial 307 to prevent a large force for pulling out the rotary dial 307 from the active bevel gear member 351 from being applied.
- the outer diameter of the bearing plate 349 is slightly smaller than that of the rotary dial 307. This prevents a large force from being applied in the pulling-out direction without impairing the operability of the rotary dial 307 directly operated by the index finger of the operator, that is, in the direction away from the distal end side exterior member 327a. ing.
- a turning power transmission pipe 313 through which a rotating power transmission pipe 313 is rotatably rotatable around its long axis has a base end portion that is longer than a distal end side exterior member 327a.
- a substantially tubular retaining pipe 346 slidable in the axial direction is bonded.
- This aluminum pie made of aluminum By operating the angle variable lever 306, the lever 346 is moved in the longitudinal direction along with the bending force transmission pipe 315.
- a thruster 353 made of metal such as stainless steel is fitted and fixed to the base end of the retaining pipe 346.
- this thruster 353 two screw holes are coaxially cut from the outer peripheral surface side, and screw pins 354a and 354b made of a metal such as stainless steel are screwed into these two screw holes, respectively.
- the thruster 353 is formed by cutting both ends on the outer peripheral side of a substantially cylindrical member so as to have parallel surfaces, and from each of the cut surfaces toward the inside, Two screw holes are formed in the direction orthogonal to the force plane. Screw pins 354a and 354b are screwed into the two screw holes, respectively, and one end of each of the screw pins 354a and 354b is provided so as to protrude.
- each of the two screw pins 354a and 354b protrudes in the outer peripheral direction of the thruster 353 at a position symmetrical at both ends on the outer peripheral side of the thruster 353 on the same axis.
- these two screw pins 354a and 354b have grooves formed in their respective screw heads so that they can be tightened with a flathead screwdriver.
- a notch is formed that is directed from the outer peripheral portion in one direction perpendicular to the axis of the two screw pins 354a and 354b and perpendicular to the long axis of the stay pipe 346 to the center. It has been.
- the cut-out portion of the thruster 353 has two opposing parallel planes.
- the retaining pipe 346 has a circumferential groove formed on the outer periphery of the base end portion, and the circumferential groove has groove surfaces respectively corresponding to the two parallel planes of the cut-out portion of the thruster 353. It is formed by performing shape processing having the following. Accordingly, the thruster 353 fits into the circumferential groove of the retaining pipe 346 from the outer peripheral direction of the notched portion so that the two surfaces of the notched portion and the groove surface of the peripheral groove of the retaining pipe 346 respectively contact each other. Is done.
- the angle variable lever 306 is a member formed by forming a metal member having a long hole 306a at both end portions and also having a metal force into a U-shape.
- holes 306b are formed near the respective long holes 306a. That is, the angle variable lever 306 is provided with two long holes 306a and two hole portions 306b.
- the angle variable lever 306 has a U-shaped arm so that the centers of the two long holes 306a pass through the same axis and the centers of the two holes 306b pass through the same axis.
- Each of the long holes 306a and each of the holes 306b are positioned and drilled at portions having opposing surfaces of the portions. Further, each of the long holes 306a and each of the holes 306b are positioned such that an axis passing through the center thereof is an axis orthogonal to the facing surface.
- the two dollar variable levers 306 in the present embodiment are provided with two angle variable levers 306 such that both side forces of the operation unit 303 also protrude.
- the two screw pins 354a and 354b of the thruster 353 are slidably rotatable around the axes of the screw pins 354a and 354b in the respective elongated holes 306a of the two angle variable levers 306, as shown in FIG. Inserted as follows.
- the two variable angle levers 306 are arranged symmetrically with respect to the long axis of the retaining pipe 346 and the long axes of the two screw pins 354a and 354b with the thruster 353 interposed therebetween.
- a pivot pin 355 is inserted into each hole 306b of each of the two angle variable levers 306 from the outer surface. That is, in the present embodiment, the two hole portions 306b of one angle variable Leno 306 are each provided with one pivot pin 355 so as to be slidable and rotatable around the axis of each pivot pin 355. To be inserted, a total of four pivot pins 355 are provided in the operation unit 303 in which two angle variable levers 306 are provided.
- Each of these four pivot pins 355 is press-fitted and fixed to the distal end side exterior member 327a. (See Figure 37). Also, the two pivot pins 355 inserted into the two holes 306b of one angle-variable lever 306 are press-fitted so as to face the distal-side exterior member 327a so that the major axes are on the same axis. Fixed. Accordingly, the two angle variable levers 306 are rotatable around the axes of the respective pivot pins 355 corresponding to the respective holes 306b.
- the two variable angle levers 306 move forward and backward along the longitudinal pipe 346 via the thrusters 353 due to the rotational operation about the axis of the pivot pin 355. be able to. Accordingly, the bending force transmission pipe 315 moves forward and backward in the long axis direction in conjunction with the forward and backward movement of the retaining pipe 346.
- the joint member 318 provided at the distal end of the bending force transmission pipe 315 pushes the link member 319 toward the distal end side as the bending force transmission pipe 315 advances and retreats in the longitudinal direction. Or to the proximal end.
- the link member 319 pushes the bending portion base member 320 toward the distal end side or pulls the bending portion base member 320 toward the base end side
- the bending portion base member 320 rotates around the pin 324 as a rotation center.
- the bending operation of the treatment section 304 is performed within a range of 90 degrees with respect to the axis of the insertion section 302.
- the two angle variable levers 306 are configured so that both side surface forces of the operation unit 303 also protrude.
- the central portions of the two angle-variable levers 306 each having a U-shape are provided with a rotary dial 307 provided on the upper side of the operation unit 303 as viewed in the plane of FIG.
- the palm-holding member 301A and finger-holding members 301B and 301C provided on the lower side as viewed in the plane of FIG. 39 are connected, and are substantially perpendicular to the vertical axis X passing through the center of the operation unit 303.
- the horizontal axis Y passing through the center of the operation unit 303 projects from both sides of the intersection of the operation unit 303 in the direction of the horizontal axis Y away from the operation unit 303.
- the surgeon can perform the bending operation of the treatment section 304 within a range of 90 degrees with respect to the axis of the insertion section 302. That is, the -dollar driver 301 of the present embodiment is provided with one variable angle lever 306 on each side surface of the operation unit 303, so that regardless of the surgeon's dominant arm (right-handed and left-handed), The treatment section 304 can be easily curved with respect to the axis of the insertion section 302.
- the thruster 35 fitted to the retaining pipe 346 and provided with two angle-variable levers 306 is provided.
- the peripheral mechanism is disposed in an internal space formed by the distal-side exterior member 327a, the main body exterior member 327b, and the cover exterior member 327c.
- one of the screw pins 354b of the thruster 353 overlaps a portion having the long hole 306a of the two angle-adjustable levers 306, and one end thereof overlaps with the other end toward the base end.
- a brake bar 361 made of a metal plate such as stainless steel extending toward the front is provided.
- a hole is formed in the one end of the brake bar, and a screw pin 354b is inserted into the hole.
- the brake bar 361 is provided in a groove 327C formed on one surface of the cover exterior member 327c, which is on the inner side of the operation unit 303, so that the brake bar 361 is guided in a straight line.
- a predetermined frictional force is applied. Due to this frictional force, a certain amount of rotating power is required when the angle variable lever 306 rotates. Therefore, the operator can maintain the state in which the treatment section 304 is bent at a predetermined angle with respect to the axis of the insertion section 302 by operating the angle variable lever 306.
- the groove 327C has a length in the long axis direction substantially the same as the amount of advance and retreat movement of the stay pipe 346 and the bending force transmission pipe 315 that are moved in the long axis direction by the rotation of the two angle variable levers 306. Thus, it is formed on the distal end side exterior member 327a.
- the open / close button 305 is urged in one direction in the middle part of the one surface of the cover exterior member 327c, so that one end of the panel panel 363 is fixed by two pins 363a.
- the brake bar 361 extends between the panel panel 363 and the cover exterior member 327c, passes between two pins 363a that fix the panel panel 363, and extends over the cover. It is held so as to be entirely buried in the groove 327C of the exterior member 327c.
- the stainless steel panel panel 363 has a cutout portion 363b formed in a substantially rectangular shape from the base end to the middle part, and the base end serving as the other end is in contact with the back surface on the base end side of the open / close button 305. ing.
- the notch 363b of the panel 363 has a pull wire 314 extending therethrough.
- a stainless steel wire retaining member 314b is provided at the base end of the pulling wire 314.
- a brake shoe 362 made of a metal such as stainless steel is provided on the surface to be cleaned.
- the brake shoe 362 is pushed toward the brake bar 361 with the force of the panel panel 363 moving toward the cover exterior member 327c.
- the brake bar 361 receives a large amount of frictional force due to an increase in the pressure on both end surfaces that come into contact with the grooves of the brake shoe 362 and the cover exterior member 327c, respectively. Therefore, the brake bar 361 is restricted so that it cannot move in the long axis direction.
- the open / close button 305 is formed of a metal or resin such as aluminum having a notched guide groove 305a from the base end to the surface in contact with one end of the panel panel 363. It is a block body of a substantially quadrangular prism made of. One end of a metal pull link 366 is inserted into the guide groove 305a of the open / close button 305.
- the open / close button 305 is provided with a pin 365 force S for rotating and holding the pull link 366 in a direction perpendicular to the axial direction of the guide groove 305a.
- the open / close button 305 has two protrusions 305b protruding toward the front end at the front end on the side where one end of the panel panel 363 contacts.
- the open / close button 305 is fitted into a hole provided in the main body exterior member 327b from the surface side of the main body exterior member 327b inside the operation unit 303. At this time, the opening / closing button 305 is prevented from being removed from the operation unit 303 by the two protrusions 305b abutting on one surface of the main body exterior member 327b.
- the open / close button 305 is movable in the direction perpendicular to the long axis of the operation unit 303 in the internal space of the operation unit 303 formed by the body exterior member 327b and the cover exterior member 327c.
- the panel panel 363 is urged by the plate panel 363 so as to be in the outer surface direction of the main body exterior member 327b, that is, the two protrusions 305b are in contact with one surface of the main body exterior member 327b.
- a pull link 366 one end of which is rotatably supported by a pin 365 on the open / close button 305, has a groove 366a formed at the other end, and this groove 366a is used to pull out the pulling wire 314. Stop member 314b is sandwiched. Further, a pin 366b for preventing the pulling wire 314 from coming out of the groove 366a is provided at the other end of the pull link 366.
- the cover exterior member 327c has a guide projection 327ca that protrudes from the base end on the side forming the internal space of the operation unit 303.
- the guide projection 327ca has a flat surface 327cb on the protrusion J, and the other end portion of the puno resin 366 abuts on the flat surface 327cb.
- the pull link 366 which is rotated when the operator presses the open / close button 305, is guided linearly by the flat portion 327cb of the force convex portion 327ca, and the other end portion is a base end on the surface of the flat portion 327cb. Slide to the side. At this time, the pulling wire 314 is pulled to the proximal side along the long axis without being substantially shifted.
- the protrusion amount of the guide projection 327ca of the cover exterior member 327c, the length of the pull link 366, and the disposition position of the wire retaining member 314b of the pulling wire 314 sandwiched by the other end of the pull link 366 are as follows.
- the opening / closing button 305 is set so that the pulling wire 314 is pulled or loosened to the proximal side or the distal side without substantially shifting by operating the button.
- the opening / closing button 305 receives the urging force from the panel 363 and moves to the outside of the operation unit 303.
- the panel 333 in the rotating portion base member 325 presses the bottom of the movable holding piece 326, and the tip side surface of the flange portion 326 c of the movable holding piece 326 becomes the base side surface of the flange portion 331 a of the fixed holding piece 331. Extends until it abuts. Therefore, when the open / close button 305 of the operation unit 303 is not operated, the planes of the movable holding piece 326 and the fixed holding piece 331 are pressed so as to be in close contact with each other. It is under pressure.
- the movable holding piece 326 moves from the fixed holding piece 331 toward the base end by the pushing operation and the non-operation of the open / close button 305, so that the movable holding piece 326 and the fixed holding piece 331 each move.
- the needles between the planes can be released or the planes can be separated to hold the needles.
- the -dollar driver 301 of the present embodiment pushes the brake bar 361 when the open / close button 305 is pressed to restrict the movement of the brake bar 361, so that the treatment section 304 is inserted into the insertion section. It is configured to be able to reliably maintain a state of being curved at a predetermined angle with respect to the axis of 302. As a result, the surgeon can maintain the treatment section 304 in a desired curved state with respect to the insertion section 302, and the suturing procedure can be easily performed.
- the end of the passive-side bevel gear member 350 having the gears faces the front end side.
- the insertion section 302 is rotatable around the axis of the insertion section 302 with respect to the operation section 303. Therefore, when the operator views the operation unit 303 from the rotation dial 307 side, when the extension direction of the treatment unit 304 with respect to the insertion axis of the insertion unit 302 is the same as the direction of the eyes seen by the operator. In other words, the rotation direction of the rotation dial 307 (ie, clockwise or counterclockwise as viewed from the operator) is the same as the rotation direction of the treatment section 304.
- the insertion section 302 is rotated around the axis of the insertion section 302 with respect to the operation section 303, and when the operator also sees the force on the rotation dial 307 side, the insertion axis of the insertion section 302 is rotated.
- the rotation direction of the rotary dial 307 is opposite to the rotation direction of the treatment section 304.
- FIG. 40 is a view for explaining another structure for pulling the pulling wire 314 straight toward the proximal end side.
- FIG. 40 shows a state where the pull link 366 and the guide projection 327ca are in contact with the force S.
- FIG. 3 also shows the proximal force of the puller wire 314.
- the pin 366b provided on the puno link 366 comes into contact with the flat surface 327cb of the S guide protrusion 327ca.
- a groove 327cc is formed in the guide convex portion 327ca along the axial direction of the operation portion 303, and one end of the pull link 366 enters the groove 327cc.
- the axial center 314c of the pulling wire 314 is located in the plane of the flat portion 327cb. Accordingly, when the open / close button 305 is pressed, one end of the pull link 366 moves along the groove 327cc, and pulls the pull wire 314 to the proximal side. At this time, the pulling wire 314 is pulled toward the proximal end while the axial center 314c of the pulling wire 314 is always located within the plane of the flat portion 327cb. Accordingly, the pulling wire 314 is immediately pulled toward the proximal side.
- the opening / closing operation, the rotation operation, and the angle change in the extension direction of the holding unit 308 of the treatment unit 308 are performed.
- the three coaxially arranged shaft members transmit the opening / closing force, the turning force, and the angle variable force to the treatment section 308, respectively.
- it is linked to the operation of each of an open / close button 305 as an open / close operation member provided on the operation unit 303, a rotation dial 307 as a rotation operation member, and an angle variable lever 306 as an angle change operation member.
- the opening / closing force, the turning force, and the angle variable force are transmitted to the treatment section 308 by the three shaft members arranged coaxially.
- the above-mentioned three shaft members are located inside the sheath 311 which is a pipe-shaped shaft member, and the sheath 311 is also rotatable around the axis with respect to the operation unit 303. That is, the sheath 311 of the insertion section 302 is also on the same axis as the three shaft members, and is opposed to the operation section 303. Thus, it can be rotated around the axis of the insertion portion 302. Therefore, the surgeon can rotate the sheath 311 around the axis, which makes it possible to open and close, rotate, and extend the extension direction of the treatment section 304 as much as possible. It is also possible to change the direction.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05739137.7A EP1757241B1 (en) | 2004-05-14 | 2005-05-10 | Surgical treatment device |
US11/599,543 US7972345B2 (en) | 2004-05-14 | 2006-11-14 | Surgical instrument |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-145699 | 2004-05-14 | ||
JP2004145699 | 2004-05-14 | ||
JP2005008153A JP4823528B2 (ja) | 2004-05-14 | 2005-01-14 | 外科用処置具 |
JP2005-008153 | 2005-01-14 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/599,543 Continuation US7972345B2 (en) | 2004-05-14 | 2006-11-14 | Surgical instrument |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005110253A1 true WO2005110253A1 (ja) | 2005-11-24 |
Family
ID=35393954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/008482 WO2005110253A1 (ja) | 2004-05-14 | 2005-05-10 | 外科用処置具 |
Country Status (4)
Country | Link |
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US (1) | US7972345B2 (ja) |
EP (1) | EP1757241B1 (ja) |
JP (1) | JP4823528B2 (ja) |
WO (1) | WO2005110253A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US8303621B2 (en) * | 2005-01-14 | 2012-11-06 | Olympus Medical Systems Corp. | Surgical treatment instrument |
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JP4832773B2 (ja) * | 2005-02-28 | 2011-12-07 | オリンパス株式会社 | 外科用処置具 |
US20100076430A1 (en) * | 2008-09-24 | 2010-03-25 | Tyco Healthcare Group Lp | Electrosurgical Instrument Having a Thumb Lever and Related System and Method of Use |
US20110190794A1 (en) * | 2010-01-29 | 2011-08-04 | Richard Wolf Gmbh | Medical needle holder |
US20110270281A1 (en) * | 2010-04-30 | 2011-11-03 | Tyco Healthcare Group Lp | Articulating Axial Needle Grasper |
US9566048B1 (en) * | 2011-04-26 | 2017-02-14 | Cardica, Inc. | Surgical instrument with discrete cammed articulation |
US11369399B2 (en) * | 2017-07-14 | 2022-06-28 | Actuated Medical, Inc. | Device for aiding in the positioning and anchoring of an endoscope during gastrointestinal procedures |
CN111134754A (zh) * | 2018-11-02 | 2020-05-12 | 逸思(苏州)医疗科技有限公司 | 一种推杆自适应结构 |
JP7093854B2 (ja) | 2019-01-07 | 2022-06-30 | オリンパス株式会社 | 内視鏡 |
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EP0908141A1 (en) * | 1997-10-08 | 1999-04-14 | Ethicon Endo-Surgery, Inc. | A needle holder to assist in suturing |
US6224614B1 (en) * | 1998-06-17 | 2001-05-01 | Inbae Yoon | Suturing instrument with angled needle holder and method for use thereof |
JP2002253554A (ja) * | 2001-03-02 | 2002-09-10 | Japan Science & Technology Corp | 持針鉗子 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US8303621B2 (en) * | 2005-01-14 | 2012-11-06 | Olympus Medical Systems Corp. | Surgical treatment instrument |
Also Published As
Publication number | Publication date |
---|---|
JP2005349180A (ja) | 2005-12-22 |
EP1757241A4 (en) | 2014-01-15 |
US20080021499A1 (en) | 2008-01-24 |
JP4823528B2 (ja) | 2011-11-24 |
EP1757241B1 (en) | 2016-02-17 |
US7972345B2 (en) | 2011-07-05 |
EP1757241A1 (en) | 2007-02-28 |
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