JP2000287984A - Treatment instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a treatment instrument which uses a structure of an operating part with good operability wherein a finger hooking part arranged on a movable operating part is always under a condition where it fits to a finger. SOLUTION: In a treatment instrument with an operating part 4, an inserting part 3 extending in the longer direction and a treating part 5 provided at the apex of the inserting part 3 and being actuated by linking with movement of an operation by the operating part 4, the operating part 4 is provided with a grip part 11 which can be gripped with a hand, a movable operating lever 12 which is rotated by pushing or pulling by either one of a thumb or an index finger to the grip part 11 and finger hooking parts 27 and 28 provided on the movable operating lever 12 and being brought into contact with a finger of an operating hand and the finger hooking parts 27 and 28 are formed in such a way that a contacting condition where the finger of the hand is fitted is kept.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment instrument which operates a treatment section by moving a movable operation section with a finger.

[0002]

2. Description of the Related Art An endoscopic treatment instrument is known as this kind of surgical treatment instrument. Generally, a treatment tool for an endoscope puts a finger on a movable handle provided in a hand operation unit, moves the movable handle, and operates the treatment unit. For example, an ultrasonic coagulation and incision device known from US Pat. No. 5,322,055 forms a finger ring on an operation lever to improve its operability, and a finger is inserted into the finger ring to rotate the operation lever. . When this type of ultrasonic coagulation and incision apparatus is used for a long period of time, fatigue such as numbness and pain of operating hands and fingers increases.

[0003] In order to reduce such fatigue, an unpublished application is disclosed in Japanese Patent Application No. 11-9312, in which an operating portion is provided with a grip portion which can be gripped with the palm of the hand. A type in which a seesaw type movable lever is operated by a thumb or forefinger of a hand has been proposed.

However, in this type, when the movable lever is moved, the contact state between the finger and the portion on which the finger is put changes according to the amount of rotation of the movable lever. In particular, when the movable lever is largely rotated, the finger may sharply hit the ridgeline of the finger hook portion, and when continuing to use the finger, the operation may be hindered.

Further, in the above-mentioned Japanese Patent Application No. 11-9312, a so-called seesaw type in which a thumb-side finger hook is formed at one end of a movable lever and an index finger is hooked at the other end of the movable lever. However, the relative positions of the thumb-side finger hook and the index-side finger hook are not point-symmetric with respect to the central axis in the longitudinal direction of the grip part gripped by the palm, but are offset. Was something. For this reason, in the operation state in which the movable lever is largely rotated, one finger may be in a position where it is difficult to move with respect to the other finger. As described above, since the power points of the finger hook on the thumb side and the finger hook on the index side are not always kept at appropriate positions, a long-time operation causes troubles such as pain in fingers and hands.

Further, the angle of the finger-holding portion of the movable lever changes with the rotation of the movable lever, and it is difficult to form the finger-contact portion into a shape that the finger always fits.
It is also difficult to operate in a contact state where the finger always fits, which adversely affects operability.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a finger hook provided on a movable side operation unit regardless of the position of the movable side operation unit. It is an object of the present invention to provide a treatment tool that employs a structure of an operation section with good operability, in which the section is always kept in a state of fitting with a finger.

[0008]

According to the first aspect of the present invention, there is provided an operation section, an insertion section connected to the operation section and extending in the longitudinal direction, and provided at a distal end of the insertion section, the operation section comprising: In a treatment tool having a treatment section that operates in conjunction with the movement of an operation, the operation section includes a fixed operation section that can be gripped by a hand, and at least one of a thumb or an index finger with respect to the fixed operation section. A movable side operation unit that is rotated by pushing and pulling, and a finger hook unit provided on the movable side operation unit and contacting a finger of the hand to be operated, wherein the finger hook unit is in a contact state where the finger of the hand fits Is provided so as to be rotatable with respect to the movable side operation unit so as to maintain the above.

According to a second aspect of the present invention, there is provided an operation section, an insertion section connected to the operation section and extending in the longitudinal direction, and provided at a tip of the insertion section, and operated in conjunction with the movement of the operation section. In the treatment tool having a treatment section, the operation section includes a fixed-side operation section that can be gripped with a hand, and a movable-side operation section that rotates by pushing and pulling the finger of the hand with respect to the fixed-side operation section. The movable-side operation unit is provided with a thumb-hanging unit for hanging the thumb of the hand to be operated, and an index finger-hanging unit for hanging the forefinger of the hand, and the two-finger hanging unit is provided on the fixed-side operation unit. It is characterized by being provided substantially symmetrically with respect to the longitudinal axis. In the present invention, the finger-holding positions of the thumb and forefinger provided on the movable-side operation unit with respect to the fixed-side operation unit gripped by the palm are arranged at relative positions so that each finger can easily move.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] An ultrasonic incision coagulation apparatus according to a first embodiment of the present invention will be described with reference to FIGS.

(Structure) FIG. 1 shows an entire ultrasonic incision coagulation apparatus 1. This ultrasonic incision coagulation device 1 is a long sheath 2
, An operation unit 4 connected to the base end of the insertion unit 3, and a treatment unit 5 provided at the distal end of the insertion unit 3.

An ultrasonic probe 6, a support member 7, and an operation rod (operation drive shaft) not shown are inserted into the insertion section 3. The distal end of the ultrasonic probe 6 protrudes from the distal end of the sheath 2 to form a fixed gripping member (fixed blade) 9. A movable gripping member (movable blade) 10 pivotally attached to the support member 7 faces the fixed gripping member 9, and the treatment section 5 is configured by the two gripping members 9, 10. The movable gripping member 10 is connected to the tip of an operating rod, and is rotated by moving the operating rod in the front-rear direction.

The treatment section 5 can be opened and closed by moving the operation stick in the front-rear direction.

The operation unit 4 includes a gripper (fixed-side operation unit) 11 that can be gripped with the palm of the hand and a finger that is attached to the front end of the gripper 11 and that grips the gripper 11. A movable operation lever (movable operation unit) 12 is provided. The grip portion 11 is formed by a resin tubular member 19 having a central axis parallel to the longitudinal axis direction of the sheath 2. A handpiece (vibrator unit) 15 having a built-in vibrator for generating ultrasonic vibration is inserted into the grip 11 from behind as shown in FIG. The horn 16 of the handpiece 15 is connected to the rear end of the ultrasonic vibration transmitting member that also serves as the ultrasonic probe 6. The ultrasonic vibration generated by the vibrator of the handpiece 15 is transmitted to the distal end of the ultrasonic probe 6 via the ultrasonic vibration transmitting member, and the treatment section 5 performs ultrasonic coagulation and incision. ing.

The handpiece 15 is provided at its rear end with a power cord 17 and a connection terminal 18 for high-frequency treatment. The power cord 17 is connected to a power supply (not shown),
Through this, electric energy is supplied to the vibrator of the handpiece 15.

As shown in FIG. 1, an open window 21 is formed in a rear end portion of a cylindrical member 19 forming an exterior of the grip portion 11 by a notch opened to the rear end side. Is pulled out from the opening window 21 at the rear end of the handpiece 15.

As shown in FIGS. 1 and 2, the movable operation lever 12 constitutes a seesaw-type movable handle, and is formed by forming a substantially belt-shaped resin member 25 into a substantially ring shape. 11 is fitted to the grip 11 in a posture substantially perpendicular to the upper and lower sides so as to be in contact with the left and right side surfaces of the front end, respectively, and further via a pair of fulcrum pins 26 coaxially attached to the left and right side walls of the grip 11. Be pivoted. Therefore, the movable operation lever 12 can rotate in a seesaw manner with the fulcrum pin 26 as a fulcrum. In addition, the movable operation lever 12
The upper end of the movable operation lever 12 has an index finger-side finger hook 28.

As shown in FIG. 2, the movable operation lever 12 is provided with an operation pin 31 which also serves as a locking pin as a connecting member. The operation pin 31 is connected to the fulcrum pin 26.
It penetrates through a through hole 32 provided adjacent to a position slightly away from the upper side. Operation pin 31
Of the rotor member 33 connected to the operating rod forms an engagement portion 35 which is engaged with an engagement groove 34 formed on the outer periphery. An operation knob 36 is formed at an outer end portion of the operation pin 31. A male screw portion 37 is formed at an outer end portion of the operation pin 31 near the operation knob 36, and the male screw portion 37 is formed in the through hole 32 of the movable operation lever 12 as shown on the left side of FIG. The female screw portion 38 is formed so as to be screwed.

The inner end portion of the operation pin 31 is attached to the inside of the through hole 32 so as to be freely movable in the axial direction thereof. The male screw 37 is screwed into the female screw 38 of the through hole 32. The engaging portion 35 is fitted and locked in the engaging groove 34 of the rotor member 33, whereby the movable operation lever 12 is
And the rotor member 33 are connected. When the male screw 37 is released from engagement with the female screw 38, the operation pin 31 is released.
Is moved outward by the urging force of the coil spring 39 wound around it, and the engaging portion 35 is automatically retracted from the engaging groove 34 of the rotor member 33 to maintain the released state.
For this reason, the mounting and removing work of the ultrasonic probe 6 is simple.

A stopper 42 as a detachable member is pivotally mounted on the upper part of the grip 11 via a pivot 41. The stopper piece 42 fixes the handpiece 15 mounted on the grip 11 at a predetermined mounting position. The stopper piece 42 is urged by a coil spring 43 wound around the pivot shaft 41 so as to rotate in a direction in which the stopper piece 42 is locked to the handpiece 15. Usually, as shown in FIG. 15.

At the front end of the grip 11, a rotary knob 45 for rotating the sheath 2 and the members to be incorporated therein together is provided. Here, the sheath 11 is always subjected to a certain degree of braking by the frictional force between the sheath 11 and the mating member with which the rotary knob 45 slides, and the sheath 11 is not easily rotated without intention.

In this embodiment, the thumb-side finger-holding portion 27 of the movable operation lever 12 has a piece 51 as a movable finger-holding member. As shown in FIG. 2, the thumb hanging piece 51 is arranged so as to be sandwiched in a space region in which an upper part of the movable operation lever 12 is partially removed, and is movable by a pin-shaped shaft 52 penetrating left and right. It is pivotally mounted on the upper part of the lever 12. The rotation center axis of the thumb hanging piece 51 is parallel to the rotation center axis of the movable operation lever 12. Further, the thumb hook piece 51 has a finger contact surface 56, which is a surface with which the belly 55 of the thumb of the operator's hand gripping the grip 11 has an appropriate shape to fit the belly 55 of the thumb.

Although not shown, the movable operation lever 12
A similar movable finger-holding piece may also be provided in the index finger-side finger-holding portion 28 of FIG.

As shown in FIG. 3, a straight line L0 connecting the fulcrum (portion of the fulcrum pin 26) of the movable operation lever 12 and the power point of the index finger-side finger hook 28 has a range of 10 ° on both sides thereof. The power point of the thumb-side finger hook portion 27 was arranged within the inside and at the opposite side with the fulcrum therebetween. Also, a straight line L0 connecting the fulcrum of the movable operation lever 12 and the point of force of the thumb-side finger hook 27 is located within 10 ° on both front and rear sides, respectively, and is located on the opposite side with the fulcrum therebetween. The power point of the finger hook 28 may be arranged. Furthermore, the point of force of the thumb-side finger hook 27, the fulcrum of the movable operation lever 12, and the fulcrum of the index finger-side finger hook 28 may be arranged substantially on a straight line.

Further, as shown in FIG. 3, when the movable operation lever 12 is at the neutral position, the movable operation lever 12 is substantially perpendicular to the longitudinal axis direction of the grip portion 11,
The finger hooks 27, 28 of the two fingers are provided such that the power point of the thumb finger hook 27 and the power point of the index finger finger hook 28 are located substantially symmetrically with respect to the longitudinal axis direction of the grip 11.

(Operation) When using the ultrasonic incision coagulation apparatus 1, first, the operator grips the grip 11 with the palm of the hand, as shown in FIG.
And the index finger of the same hand is attached to the index finger side finger holder 28 of the movable operation lever 12.
Here, a movable finger hook piece 51 is attached to the thumb side finger hook portion 27.
Is provided on the finger contact surface 56 of the thumb pad 5.
5 so as to make contact.

Normally, the movable operation lever 12 is in a neutral position as shown in FIG. 3, and at this time, the movable gripping member 10 of the treatment section 5 is in a slightly opened state.

Next, when the movable gripping member 10 of the treatment section 5 is closed, as shown in FIG. 4, the thumb holding the gripping section 11 is used to pull the thumb side finger hook 27 toward the hand. Then, the movable operation lever 12 rotates about the fulcrum pin 26, and the rotor member 33 is retracted via the operation pin 31. Thus, the operation rod connected to the rotor member 33 is pulled in, and the driving of the distal end (not shown) is performed. The movable gripping member 10 is closed via the mechanism.

When the movable gripping member 10 of the treatment section 5 is opened, as shown in FIG. 5, the thumb of the hand gripping the gripping section 11 pushes the thumb-side finger holding section 27 to the distal end side, or the index finger uses the index finger. By pulling the side finger hook 28 toward the hand side or simultaneously, the operating rod is pushed out via the operating pin 31 and the rotor member 33 in the same manner as described above, and the treatment unit 5 is driven via a driving mechanism (not shown) on the distal end side. Can be opened.

On the other hand, when an operation switch (not shown) is operated, the ultrasonic vibration generated by the vibrator (not shown) of the handpiece 15 is transmitted to the distal end by the ultrasonic probe 6, and the fixed holding member 9 of the treatment section 5 and the movable holding member 9 are moved. Member 10
The living tissue grasped in between is coagulated and incised by ultrasonic waves.

If the ultrasonic probe 6 is replaced with another treatment member, for example, a grasping member such as the movable grasping member 10, the ultrasonic probe 6 can be used not only for ultrasonic incision coagulation but also as a grasping and peeling treatment tool. Will be able to

When cleaning and sterilizing the ultrasonic incision coagulation device 1, the operating pin 31 is loosened and removed from the rotor member 33 to effectively perform the cleaning and sterilization.
2 is pushed in the release direction to release the engagement between the gripper 11 and the handpiece 15, and with the stopper piece 42 opened, with both sides of the rear end portion of the exterior tubular member 19 of the gripper 11. Handpiece 1 through the open window 21 formed in
5 and pull out the handpiece 15 backward.

Although the ultrasonic probe 6 and the handpiece 15 are not shown, since they are joined by screws, the ultrasonic probe 6 and the handpiece 15 are pulled out from the operation unit 4 in a state where the ultrasonic probe 6 and the handpiece 15 are joined. The handpiece 15 is disassembled outside the operation unit 4. When pulling out the probe 6 and the handpiece 15 from the operation unit 4, the probe 6 and the handpiece 15 can be pulled out without pulling the power cord 17 and the like due to the presence of the cutout open window 21. Can be prevented.

Also, since the thumb is hung on the rotatable piece 51, the belly 55 of the thumb is always properly held on the thumb-side finger hook 27 regardless of the direction in which the movable operation member 10 is turned. It is hung in a mating contact state, and this state is maintained.
The piece 51 is rotatable. Therefore, the movable operation member 10
Regardless of the state of rotation, the thumb is not overwhelmed, and the fingers and hands are less likely to hurt and cause trouble or fatigue.

[Second Embodiment] An ultrasonic incision coagulation apparatus according to a second embodiment of the present invention will be described with reference to FIG.

The ultrasonic incision coagulation device according to the second embodiment includes a thumb-side finger hook 27 of the movable operation lever 12 of the operation unit 4.
The attachment structure of the piece 51 as a finger hook member provided in the first embodiment is different from that in the first embodiment. Other configurations are the same as those in the first embodiment.

In this case, when the thumb hanging piece 51 is installed in the partially removed space area above the movable operation lever 12,
The elastic members 55a and 55b, such as silicon rubber, are interposed therebetween for attachment. The pin-shaped shaft 52 penetrates the elastic member 55a, the piece 51, and the elastic member 55b from side to side, and both ends of the pin-shaped shaft 52 are attached to the upper part of the movable operation lever 12.

(Operation) The thumb hook piece 51 is rotatable, but an elastic member 55 is provided between the thumb hook piece 51 and the movable operation lever 12.
a, 55b, the elastic members 55
It does not rotate easily due to friction with a and 55b. Since the piece 51 of the thumb-side finger hook 27 does not rotate naturally, the finger does not suddenly slip and the finger does not come off the thumb-side finger hook 27. Further, the movement of the thumb-side finger hook 27 can be stabilized. Further, there is no inconvenience that the direction of the piece 51 is easily reversed and reversed.

Third Embodiment An ultrasonic incision coagulation apparatus according to a third embodiment of the present invention will be described with reference to FIGS.

The ultrasonic incision coagulation device 1 according to the third embodiment includes a thumb-side finger hook 2 of a movable operation lever 12 of an operation unit 4.
The attachment structure of the piece 51 as a finger-holding member provided in 7 is different from that of the first embodiment. Other configurations are the same as those in the first embodiment.

Here, in order to prevent the direction of the piece 51 of the thumb-side finger hook portion 27 from being reversed and reversed, a rotation range restricting stopper means for limiting the rotation range of the piece 51 is provided. is there. That is, in the upper part of the movable operation lever 12, both ends facing the removal space area are cut out to form recesses 57a and 57b, and the recesses 57a and 57b are formed.
The piece 51 was set so that the end of the piece 51 was fitted into the piece b.

First, the recesses 57a and 57b are
As shown in FIG. 9A, when the piece 51 rotates to the right, the bottom portion of the piece 51 contacts the lower wall portion of the piece 51, and further pieces 51 prevent the clockwise rotation, and as shown in FIG. 9B. , Piece 51
Is rotated counterclockwise, the front portion of the piece 51 hits the front rising wall portion, and further pieces 51 prevent the counterclockwise rotation.

Thus, a rotation range restricting stopper for restricting the rotation range of the thumb-side finger hook 27 is formed.

Also, in the case of the third embodiment, elastic members 58a and 58b are provided as in the case of the second embodiment.
It is prevented from rotating easily due to friction with the elastic members 58a and 58b.

The finger-piece piece 51 of the thumb-side finger-holding part 27 is provided so as to be sandwiched between the movable operation levers 12, and a part of the finger-piece piece 51 is fitted into the concave portions 57a and 57b, and the finger-piece piece is provided. In order to restrict the rotation of the piece 51, the piece 51 is rotated too much and is turned upside down, thereby preventing the finger contact surface 56 from being directed to the fixed operation section. The finger can always contact the finger contact surface 56. For this reason, since the finger always fits on the finger contact surface 56, the finger does not hurt even during a long operation, and the operability is improved.

[Fourth Embodiment] An ultrasonic incision coagulation apparatus according to a fourth embodiment of the present invention will be described with reference to FIGS.

The ultrasonic incision coagulation apparatus 1 according to the fourth embodiment is a modification of the first embodiment.
Thumb-side finger hook 27 formed on the movable operation lever 12
The forefinger 28 is arranged substantially symmetrically with respect to the long axis X of the grip 11 as the fixed operation unit.
A thumb-side finger hook 27 and a forefinger-side finger hook 28 formed on the movable operation lever 12 are arranged at a position where one finger can easily move with respect to the other finger. The distance between the finger contact point (usually the point of force) 61 of the thumb-side finger hook 27 and the finger contact point (usually the point of force) 62 of the index finger hook 28 was 7 to 12 mm. Other points are the same as those of the first embodiment.

(Operation) Since the thumb-side finger hook 27 and the index finger-side hook 28 formed on the movable operation lever 12 are arranged at positions where one finger can easily move with respect to the other finger, operation is easy. It is. In addition, as shown in FIG. 11, even when the wrist is bent and the grip portion 11 is gripped by the palm, the hand does not hurt.

[Fifth Embodiment] An ultrasonic incision coagulation apparatus according to a fifth embodiment of the present invention will be described with reference to FIG.

The ultrasonic incision coagulation apparatus 1 according to the fifth embodiment is a modification of the fourth embodiment. Here, a finger contact point 61 and a fulcrum of the thumb-side finger hook 27 formed on the movable operation lever 12 are shown. The distance to the center of the pin 26 is a, and the distance between the finger contact point 62 of the forefinger 28 and the fulcrum pin 26 is b. The distance a and the distance b were set to a = b. Further, the distance a and the distance b may be set so that a> b.

By setting as described above, the movable ranges of the thumb and the index finger become substantially equal. Therefore, since the thumb and the index finger are not allowed to move unreasonably, fatigue of the hands and fingers can be reduced.

When a> b, the movable range of the thumb is wider than that of the index finger.
2 can be operated.

The present invention is not limited to the embodiment described above. The present invention is not limited to the ultrasonic incision coagulation apparatus, but is applied to other endoscope treatment tools.

According to the description of the above embodiment, at least the following items and items obtained by arbitrarily combining them can be obtained.

<Supplementary note 1 group> A treatment tool having an operation portion, an insertion portion connected to the operation portion and extending in the longitudinal direction, and a treatment portion provided at a distal end of the insertion portion and operating in conjunction with an operation performed by the operation portion. The operation unit includes a fixed-side operation unit that can be gripped with a hand, a movable-side operation unit that is rotated with respect to the fixed-side operation unit by pushing or pulling at least one of a thumb and an index finger, and the movable-side operation unit. A finger-holding portion for contacting a finger of the hand to be operated, wherein the finger-holding portion is provided rotatably with respect to the movable-side operation portion so as to maintain a contact state in which the finger of the hand fits. A treatment tool characterized by being performed.

2. An operation unit, an insertion unit connected to the operation unit and extending in the longitudinal direction, and a treatment provided at a distal end of the insertion unit and capable of performing an operation of gripping a living tissue in conjunction with an operation performed by the operation unit. Unit, a handpiece connected to the operation unit and having a built-in vibrator for generating ultrasonic vibration, and a probe for transmitting ultrasonic vibration generated by the vibrator to the treatment unit, the treatment unit In an ultrasonic incision coagulation apparatus configured to perform incision and coagulation of a living tissue to be grasped by ultrasonic vibration, the operation unit includes a fixed-side operation unit that can be gripped by hand, and at least a thumb or an index finger with respect to the fixed-side operation unit. A movable operation unit that is rotated by one of the push and pull, and a finger hook unit provided on the movable operation unit and contacting a finger of the hand to be operated, wherein the finger hook unit is a finger of the hand. But Characterized in that provided so as to be rotatable with respect to the movable-side operating portion to maintain the contact state to preparative ultrasonic dissection coagulation apparatus.

3. 3. The treatment tool or the ultrasonic coagulation and incision device according to the first or second aspect, further comprising an elastic member installed so as to increase the amount of rotation of the finger hook portion relative to the movable operation portion by friction.

4. Item 3. The treatment tool or ultrasonic coagulation / cutting device according to Item 3, wherein the elastic member is silicon rubber. 5. 5. The treatment tool or the ultrasonic coagulation and incision apparatus according to any one of items 1 to 4, further comprising a rotation restricting unit that restricts a rotation range of the finger hook with respect to the movable side operation unit.

<Appendix 2 Group> The treatment tool, comprising: an operation section, an insertion section connected to the operation section and extending in the longitudinal direction, and a treatment section provided at a distal end of the insertion section and operating in conjunction with the movement of the operation section. The operation unit includes a fixed-side operation unit that can be gripped by a hand, and a movable-side operation unit that rotates by pushing and pulling a finger of the hand with respect to the fixed-side operation unit. The movable-side operation unit performs the operation. A thumb hook for hanging the thumb of the hand and an index finger hook for hanging the index finger of the hand are provided, and the two finger hooks are arranged substantially symmetrically with respect to a longitudinal axis of the fixed side operation unit. A treatment tool characterized by being provided by:

2. An operation unit, an insertion unit connected to the operation unit and extending in the longitudinal direction, a treatment unit provided at a distal end of the insertion unit and operating in conjunction with the movement of the operation unit, and connected to the operation unit; It has a handpiece with a built-in vibrator that generates ultrasonic vibration, and a probe that transmits the ultrasonic vibration generated by the vibrator to the distal end portion. In the ultrasonic incision coagulation device for performing incision and coagulation, the operation unit includes a fixed operation unit that is gripped by hand, and a movable operation unit that is rotated by pushing and pulling the finger of the hand with respect to the fixed operation unit. The movable side operation unit is provided with a thumb hook portion for hanging the thumb of the hand to be operated, and an index finger hook portion for hanging the index finger of the hand, and the both finger hook portions are provided with the fixed side operation. With respect to the longitudinal axis of the part Ultrasonic coagulation and incision apparatus being characterized in that provided arranged symmetrically.

3. In the first and second aspects, the distance between the finger contact point of the thumb finger part and the finger contact point of the index finger part is in the range of 7 mm to 12 mm. Sonic coagulation incision device.

4. In any one of the first to third aspects, a distance from a movable center of the movable side operation part to a finger contact point of the thumb side finger part is provided from the center of the movable side operation part to the index side. A treatment tool or an ultrasonic coagulation / incision apparatus characterized in that the distance to a finger contact point of a finger hook is equal to or larger than the distance.

[0063]

As described above, according to the present invention, no matter what position the movable operation section is rotated, the finger hook provided on the movable operation section always fits the finger. In other words, even if the operation is performed for a long time, the hand or finger to be operated is not hindered, and the operability is improved.

[Brief description of the drawings]

FIG. 1 is a side view of an entire ultrasonic incision coagulation apparatus according to a first embodiment.

FIG. 2 is a cross-sectional view of the ultrasonic cutting and coagulating apparatus taken along a line AA in FIG.

FIG. 3 is a side view in a state where the ultrasonic incision coagulation device is held by hand.

FIG. 4 is a side view of the ultrasonic incision coagulation apparatus in an operation state in which a treatment unit is closed.

FIG. 5 is a side view of the ultrasonic incision coagulation device in an operation state in which a treatment unit is opened.

FIG. 6 is a side view sectional view of the ultrasonic incision coagulation apparatus showing only a part of the apparatus.

FIG. 7 is a cross-sectional view of a part of an ultrasonic incision coagulation apparatus according to a second embodiment.

FIG. 8 is a cross-sectional view of a part of an ultrasonic incision coagulation apparatus according to a third embodiment.

FIG. 9 is a longitudinal sectional view of a thumb-side finger hook of the ultrasonic incision coagulation apparatus according to the third embodiment.

FIG. 10 is a side view of a state in which the ultrasonic incision coagulation apparatus according to the fourth embodiment is held by hand.

FIG. 11 is a side view of a state in which the ultrasonic incision coagulation apparatus according to the fourth embodiment is held in another posture.

FIG. 12 is a side view in a state where the ultrasonic incision coagulation apparatus according to the fifth embodiment is held by hand.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Ultrasonic incision coagulation apparatus 2 ... Sheath 3 ... Insertion part 4 ... Operation part 5 ... Treatment part 6 ... Ultrasonic probe 9 ... Fixed holding member 10 ... Movable holding member 11 ... Holding part (fixed side operation part) 12 ... Movable Operation lever (movable-side operation unit) 15: Handpiece 26: Support pin 27: Thumb-side finger hook 28: Index finger-side finger hook 31: Operation pin 51: Thumb hook piece 56: Finger contact surface.

Claims (2)

[Claims] An operation unit, an insertion unit connected to the operation unit and extending in a longitudinal direction, and a treatment unit provided at a tip of the insertion unit and operated in conjunction with an operation of the operation unit. In the treatment tool, the operation unit includes a fixed-side operation unit that can be gripped by a hand, a movable-side operation unit that is rotated with respect to the fixed-side operation unit by pushing or pulling at least one of a thumb and an index finger, A finger hook portion provided on the movable side operation portion, for contacting a finger of the hand to be operated, wherein the finger hook portion is arranged on the movable side operation portion so as to maintain a contact state where the finger of the hand fits. A treatment tool provided rotatably. 2. An operation section, an insertion section connected to the operation section and extending in a longitudinal direction, and a treatment section provided at a distal end of the insertion section and operated in conjunction with movement of the operation section. In the treatment instrument, the operation unit includes a fixed-side operation unit that can be gripped by a hand, and a movable-side operation unit that is rotated by pushing and pulling a finger of the hand with respect to the fixed-side operation unit. A thumb hook for hanging the thumb of the hand to be operated and an index finger hook for hanging the index finger of the hand are provided, and the two finger hooks are arranged with respect to a longitudinal axis of the fixed side operation unit. A treatment tool characterized by being arranged substantially symmetrically.