JP3056683B2 - Ultrasonic surgical instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic surgical device, and more particularly to an ultrasonic surgical device capable of adjusting a suction amount when sucking tissue or the like after ultrasonic crushing.

[0002]

2. Description of the Related Art An ultrasonic surgical instrument is roughly divided into a handpiece main body having a built-in ultrasonic vibrator, and a horn connected to the handpiece main body and crushing tissue by ultrasonic vibration. The handpiece body is generally formed in an elongated rod shape so that the operator can easily grasp it, and there are many cases where the tip is slightly bent. The horn is formed to be hollow, and the inside thereof forms a suction path. That is, the crushed tissue is suctioned and removed from the tip opening of the horn.
At that time, a perfusion solution is poured as necessary.

[0003] A suction path is also formed inside the handpiece main body, and the crushed tissue sucked from the horn tip opening passes through the inside of the handpiece main body, and further passes through a suction tube connected to the rear end to the suction device. Be guided.

[0004] For example, when performing a surgical operation such as removing a tumor, when a nerve existing around the tumor is likely to be erroneously sucked, the nerve is damaged unless the suction pressure is immediately reduced to zero. There is a possibility that it will be done. Therefore, in such a case, it is necessary to stop the suction operation of the suction device, but it is generally difficult to immediately operate such a device during surgery. Therefore,
It has been proposed to provide a suction amount adjuster in a handpiece body and to perform suction amount adjustment using the adjuster.

[0005] The suction amount adjuster is connected to a branch path branched from the middle of the suction path, and adjusts the suction amount by closing or opening an opening (leak opening). That is, the suction amount adjuster is provided with an opening that is closed by the belly of the index finger of the hand holding the handpiece body, and the suction amount is adjusted according to the degree of closing of the opening. If the opening is completely closed by the finger, the suction pressure becomes maximum, and the air suction amount increases in accordance with the degree of opening of the opening, that is, the suction pressure of the crushed tissue decreases.

[0006]

However, when an ultrasonic operation is to be performed while holding the conventional ultrasonic operation device provided with the above-mentioned suction amount adjuster, the handpiece body is originally supported. Therefore, there is a problem that the grip of the handpiece body tends to be unstable because one finger (forefinger) for this purpose also plays the role of adjusting the closing of the opening at the same time. In particular, brain surgery requires extremely delicate operation of an ultrasonic surgical instrument. However, if a finger is frequently moved to adjust the suction amount, there is a problem that such delicate operation is difficult to perform.

Further, the conventional suction amount adjuster is fixedly provided on the main body of the handpiece, cannot sufficiently cope with various hand sizes, and has a lack of flexibility in gripping.
In addition, it has been pointed out that it is difficult to adjust the suction amount depending on how to grasp.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide an ultrasonic surgical apparatus having a suction amount adjuster, in which any finger is moved to adjust the suction amount. And to maintain a stable gripping state.

It is another object of the present invention to provide an ultrasonic surgical instrument which can be adapted to various hand sizes and has good operability without much restriction on the way of gripping.

It is another object of the present invention to provide a suction amount adjuster and a hand grip which can be easily attached to an existing ultrasonic surgical instrument as needed and can be easily removed.

[0011]

In order to achieve the above-mentioned object, the present invention provides a handpiece body having a built-in ultrasonic vibrator, an ultrasonic vibration transmitted from the handpiece main body, and a tissue portion formed by a tip. And a suction horn provided on the main body of the handpiece and connected to a branch passage drawn out of a suction passage guided from the tip opening of the hollow horn, and adjusting a suction amount by adjusting an opening amount. and quantity regulator, is provided in the handpiece body, seen including a handgrip for performing support when gripping the handpiece body, the hand grip, the handpiece
Arm between the thumb and forefinger of the hand
Ji member and said free Mukoto.

According to the above configuration, the suction amount adjuster is provided in the handpiece body, and the suction amount is adjusted by adjusting the degree of closing of the opening with a finger. that time,
Since the hand grip supports the handpiece body by hand, a stable gripping state can be maintained even if the finger is moved for adjusting the suction amount. Generally, the handpiece body is gripped with a knife grip or a pencil grip. In any case, if the amount of suction is adjusted with one finger, the gripping state tends to be unstable as a result. According to the present invention, the above-mentioned unstable state is eliminated with the help of a hand grip whose shape is determined from an ergonomic point of view.

In a preferred aspect of the present invention, the apparatus further includes a clip member provided with the suction amount adjuster and detachably attached to an arbitrary position within a clip attachment range of the handpiece body. If the clip member is configured to be detachable in this way, the suction amount adjuster can be retrofitted to the existing ultrasonic surgical instrument, and the flexibility of the mounting position allows for adaptation to various hand sizes and gripping methods. , Its operability is improved.

Here, it is desirable that the clip member is formed of a ring-shaped elastic member having a diameter smaller than the diameter of the handpiece mounting range.

[0015] In a preferred embodiment of the present invention, the handgrip is provided with a pre-Symbol arch member includes a clamp member that is removably attached to an arbitrary position within the grip mounting range in the handpiece body.

According to this configuration, the hand grip can be easily attached to an existing ultrasonic surgical instrument, and the position of the hand grip can be freely selected according to the size of the hand and the manner of gripping. Here, it is preferable that the clamp member has a diameter corresponding to the diameter of the grip mounting range, and the diameter is reduced by a fastening member.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an overview of an ultrasonic surgical instrument according to the present invention. This ultrasonic surgical instrument is roughly divided into a handpiece main body 10 and a horn 12 connected to the tip of the handpiece main body 10. The handpiece body 10 is formed in an elongated rod shape, and a distal end 10A is slightly bent from a central portion thereof. The rear end side of the handpiece body 10 constitutes a thick shaft portion 10B, and the ultrasonic surgical device is basically operated by gripping the thick shaft portion 10B.

An ultrasonic vibrator for generating ultrasonic vibration is built in the handpiece body 10. The ultrasonic vibration is transmitted to the elongated horn 12, and the tip of the horn 12 causes the tissue to be crushed. The horn 12 is formed in a hollow shape, and the crushed tissue is sucked through the tip opening of the horn 12. A horn cover 14 is provided at the tip of the handpiece body 10, and the rear side of the horn 12 is housed in the horn cover 14. Note that there is a minute gap between the horn cover 14 and the horn 12, and the washing solution supplied from the washing solution tube 16 is poured into the tissue side through the gap. Of course, the rinsing liquid poured in such a manner is sucked from the tip opening of the horn 12 together with the crushed tissue. A suction passage communicating with the inside of the horn 12 is formed inside the handpiece body 10, and the suction passage further communicates with a suction tube 18. The suction tube 18 is connected to a suction tube 22 via a branching tool 20, and the suctioned washing liquid and crushed tissue are sent to a suction device (not shown) via the suction tube 22. In FIG. 1, a cable 24 is for supplying an electric signal to an ultrasonic transducer of an ultrasonic surgical instrument.

In the handpiece body 10, a suction amount adjuster 26 is detachably mounted on the front side of the thick shaft portion 10B. The suction amount adjuster 26 has a leak opening described later, and the leak opening communicates with the branching tool 20 via the branch tube 28. The branching tool 20 has a three-way branching structure as shown in FIG. 1, that is, the space between the suction tube 18 and the suction tube 22 is branched by the branching tool 20, and a leak opening exists at the end of the branch path. doing.

By closing the leak opening of the suction amount adjuster 26 with, for example, the belly of the index finger 27, the leak opening is completely closed, and the suction action at the tip opening of the horn 12 is maximized. That is, the suction amount becomes maximum. On the other hand, if the opening amount of the leak opening is adjusted, air will be sucked through the leak opening, and the suction action at the tip opening of the horn 12 will be reduced. Of course, when the index finger 27 is completely separated from the suction amount adjuster 26,
Almost only air will be sucked into the suction device,
The suction action at the tip opening of the horn 12 is effectively stopped.

In the embodiment shown in FIG.
In order to make it possible to retrofit the existing ultrasonic surgical instrument 6 with a suction amount adjuster 26, a clip member to be described later is provided.
6 can be easily attached to the handpiece body 10. Then, the branching tool 20 is inserted into an arbitrary position of the suction tubes 18 and 22 and the branching tool 20 and the suction amount adjuster 2 are inserted.
6 can be connected to the existing ultrasonic surgical instrument very easily by adjusting the suction amount by connecting the branch tube 28 to the ultrasonic surgical instrument. The suction amount adjuster 26 can be provided at an arbitrary position of the thick shaft portion 10B. For example, the suction amount adjuster 26 can be provided at a position that is most easily operated according to the size of the hand or the way of holding.
Is desirably provided. That is, the entire thick shaft portion 10B constitutes the clip mounting range.

As shown in FIG. 1, a hand grip 30 is detachably mounted on the ultrasonic surgical instrument of the present embodiment. As will be described later, the hand grip 30 includes an arch member 34 that straddles the base between the thumb 32 and the index finger 27 of the hand, and a clamp member 35 connected to the arch member. . If the hand grip 30 is attached to the ultrasonic surgical device in this manner, it is possible to extremely stabilize the gripping state when the handpiece body 10 is gripped with a pencil grip as shown in FIG. Become. The hand grip 30 can be attached to any position of the thick shaft portion 10B.
Constitute the grip mounting range. Therefore, the hand grip 30 can be provided at a desired position according to the size of the hand, the manner of gripping, and the like.

FIG. 2 shows the suction amount adjuster 26 shown in FIG.
Is shown in top view. As shown in FIG. 2, the suction amount adjuster 26 has a leak opening 36 on an upper surface thereof. A clip member 38 is fixedly arranged on the suction amount adjuster 26. In addition, one end of the branch tube 28 is connected to the drawer tube 40 in FIG.

FIG. 3 is a side view of a suction amount adjusting unit constituted by the suction amount adjuster 26 and the clip member 38. The clip member 38 is formed of a ring-shaped elastic member partially open, and the diameter thereof is slightly smaller than the diameter of the thick shaft portion 10B.

FIG. 4 is a sectional view of the suction amount adjuster 26. The upper surface of the suction amount adjuster 26 is slightly depressed, and the above-described leak opening 36 is formed at the center thereof. The leak opening 36 is formed like a long and narrow hole. A branch tube 2 is provided inside the suction amount controller 26.
The cavity 40 communicating with the inside of the nozzle 8 is formed, and the amount of air sucked from the leak opening 36 can be adjusted by changing the degree of closing of the leak opening 36. Various shapes can be applied to the shape of the leak opening 36.

As shown in FIGS. 2 and 3, the clip member 38 is formed of a ring-shaped member, while the thick shaft portion 10B is also formed in a cylindrical shape.
The arrangement angle of 6 can be as desired. Further, as described above, the position of the suction amount adjuster 26 can be set freely to the front side or the rear side.

FIG. 5 is a front view of the handgrip 30. As described above, this hand grip 30
Is constituted by an arch member 34 and a clamp member 35. The arch member 34 is formed in an arc shape so as to fit into a valley between the thumb and the index finger,
The clamp member 35 is integrally provided at the top.

FIG. 6 is a side view of the handgrip 30, and as shown in FIG.
Are partially opened, and screws 42 as fastening members are used.
By tightening, the diameter of the clamp member 35 can be changed. The diameter of the clamp member 35 is the screw 4
In the state where 2 is loosened, the diameter of the thick shaft portion 10B is slightly larger, and the diameter of the clamp member 35 is reduced by tightening the screw 42, so that the hand grip 30 is securely attached to the thick shaft portion 10B. It is possible.

Therefore, the arrangement angle of the handgrip 30 and the arrangement position in the direction along the thick shaft portion 10B can be set arbitrarily, and the flexibility of arrangement of the suction amount adjuster 26 allows the ultrasonic surgical instrument to be used. Operability can be improved. In particular, in neurosurgery or the like, a handpiece body with a slightly bent or curved distal end as shown in FIG. 1 is often used.
It is extremely significant that the arrangement position of the suction amount adjuster 26 can be freely adjusted. Further, according to the hand grip 30, for example, the posture of the handpiece body 10 can be grasped by groping, so that when the handpiece body 10 is grasped,
The position of the suction amount adjuster 26 can be immediately found without relying on visual observation. Therefore, it is useful, for example, when performing an ultrasonic operation in a dark operating room.

[0031]

As described above, according to the present invention,
In an ultrasonic surgical device provided with a suction amount adjuster, a stable gripping state can be maintained even if any finger is moved for adjusting the suction amount. Therefore, operability is improved. Further, according to the present invention, it is possible to cope with the size of the hand and the manner of gripping of the operator, and it is possible to reduce restrictions on the operation of the ultrasonic surgical instrument. Further, according to the present invention, it is possible to provide a suction amount adjuster and a hand grip which can be easily attached to and detached from an existing ultrasonic surgical instrument.

[Brief description of the drawings]

FIG. 1 is a schematic view of an ultrasonic surgical instrument according to the present invention.

FIG. 2 is a top view of a suction amount adjuster.

FIG. 3 is a side view of a suction amount adjuster.

FIG. 4 is a sectional view of a suction amount adjuster.

FIG. 5 is a front view of the handgrip.

FIG. 6 is a side view of the handgrip.

[Explanation of symbols]

10 Handpiece body, 10B Thick shaft, 12 Horn, 26 Suction volume adjuster, 30 Hand grip.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-114456 (JP, A) JP-A-4-322658 (JP, A) Fully open 60-35769 (JP, U) Really open 1959 174806 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 1/00 A61B 17/22 A61B 18/00-18/28

Claims (5)

(57) [Claims] 1. A handpiece main body having a built-in ultrasonic vibrator, a hollow horn to which ultrasonic vibrations are transmitted from the handpiece main body and a tissue is crushed by a distal end portion, provided on the handpiece main body, A suction amount adjuster that is connected to a branch passage drawn out of the middle of a suction passage that is guided from the tip opening of the hollow horn and that adjusts a suction amount by adjusting an opening amount; provided on the handpiece body, the handpiece; only including a hand grip to carry out the support at the time of gripping the body, wherein the hand grip, the thumb and index finger of the hand gripping the hand piece body
Ultrasonic surgical instrument characterized by including Mukoto an arch member that spans between. 2. The ultrasonic surgical instrument according to claim 1, further comprising: a clip member provided with the suction amount adjuster, which is detachably attached to an arbitrary position within a clip attachment range of the handpiece body. Ultrasonic surgical device characterized. 3. The ultrasonic surgical apparatus according to claim 2, wherein the clip member is formed of a ring-shaped elastic member having a diameter smaller than a diameter of the handpiece mounting range. vessel. 4. A ultrasonic surgical instrument according to claim 1, wherein the hand grip, before SL includes an arch member, the clamping portion is detachably attached to any position within the grip mounting range in the handpiece body An ultrasonic surgical device characterized by including materials . 5. The ultrasonic surgical instrument according to claim 4, wherein the clamp member has a diameter corresponding to a diameter within the grip mounting range, and the diameter is reduced by a clamping member. And ultrasonic surgical instrument.