JP2000175934A - Ultrasonic surgery instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve an ultrasonic surgery instrument executing the incision and hemostasis of a tissue by ultrasonic waves. SOLUTION: A hand piece 12 includes an ultrasonic vibrator 20 and ultrasonic vibration generated there is transmitted to an operation instrument 22. The instrument 22 has two spatula-shaped parts 24 and 26 to insert-hold the tissue 100 such as a blood vessel between their tip parts 24A and 26A, thereby the tissue is given incision and hemostasis. Pads 40 and 42 are provided at the node position of vibration in the part 24 and 26 to close-operate the instrument 22 by the belly of a finger, etc., by utilizing the pads 40 and 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic surgical apparatus for incising a tissue by ultrasonic vibration.

[0002]

2. Description of the Related Art A conventional ultrasonic surgical apparatus is roughly divided into a main body containing a power supply and a control section, and a handpiece connected to the main body by a cable. The handpiece is provided with an ultrasonic vibrator, and the ultrasonic vibration of the ultrasonic vibrator is transmitted to the horn. When the tip of the horn contacts the living tissue, ultrasonic vibration is transmitted to the tissue, whereby the tissue is crushed, incised, and emulsified.

[0003] Japanese Patent Publication No. 8-505801 discloses a device for sandwiching tissue between a blade that vibrates ultrasonically and a clamp that opens and closes the blade, incising the tissue and stopping blood. . With an electrosurgical device,
Tissue dissection and hemostasis can be performed, but at that time smoke and smell are generated. In contrast, incision and hemostasis by ultrasonic surgery can eliminate or significantly reduce smoke and odor.

[0004]

However, the device disclosed in Japanese Patent Application Publication No. Hei 8-505801 has a special form which is used under an operation using a laparoscope, and is generally used in general surgical operations. It is not suitable for use in performing incision and hemostasis while picking tissue. There is a demand for an ultrasonic surgical device having good operability, similarly to tweezers and forceps used in general surgery, and in particular, a device capable of obtaining a hemostatic action is desired.

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 good operability.

It is another object of the present invention to provide an ultrasonic surgical apparatus capable of performing hemostasis simultaneously with incision across a tissue.

[0007]

In order to achieve the above object, the present invention provides an ultrasonic vibrator and a member to which ultrasonic vibration from the ultrasonic vibrator is transmitted to a base end, A vibrating clamp having two spatulaes bifurcated from the base end and transmitting vibration to the distal end portions of the two spatulas, and holding a tissue between the distal end portions of the two spatulaes And transmitting ultrasonic vibrations to the tissue from both sides.

[0008] According to the above configuration, for example, a tissue such as a blood vessel is sandwiched between the tips of the two spats, and ultrasonic vibration is transmitted to the tissue. This desirably separates and dissects the tissue, along with which hemostasis is performed. ADVANTAGE OF THE INVENTION According to the ultrasonic surgical apparatus which concerns on this invention, favorable operability can be implement | achieved and the effect | action of incision and hemostasis can be improved by efficiently transmitting ultrasonic vibration to a tissue.

Preferably, the tips of the two spatulaes are located at antinodes of vibration, the tissue is cut by ultrasonic vibrations of the tips, and the heat generating action of the tips is used. The bleeding is stopped.

Preferably, the position of the node of the vibration in each of the spatula is set as the picking position. That is, if the position is at the node of the vibration, the vibration is not hindered even if the finger is pressed.

Preferably, a pad which is pressed by an operator's finger at the position of the joint is provided on an outer surface of each of the spats. This pad protects the operator's fingertip to ensure safety, and if the pad has a low thermal conductivity, the fingertip can be thermally protected. Further, if the pads are made non-conductive, the electrical safety of the operator can be enhanced.

Preferably, the vibration holding device has a tweezer shape. According to this configuration, the same operability as that of the conventional tweezers, in particular, a fine local surgical operation can be favorably performed.

[0013] Preferably, the vibration holding device is exchangeably mounted. According to this configuration, an appropriate holding tool can be selectively used depending on the operation target, the site, and the like.

Preferably, there is provided means for urging the two spats in the opening direction. According to this configuration, when the two spatulaes are not pressed, they can always be kept open.

Preferably, the handpiece includes a handpiece containing the ultrasonic vibrator, and a holding aid for holding the handpiece in an operator's hand. According to this configuration, the operability can be enhanced by the holding assisting tool, and the burden on the operator can be reduced even when performing surgery for a long time.

[0016] Preferably, teeth having a plurality of irregularities are formed at the tips of the two spats at the inside thereof. According to this configuration, the tissue can be stably held, and the incision action can be enhanced.

Preferably, a means for controlling the stop of ultrasonic oscillation in conjunction with the opening and closing of the two spats is included. For example,
Ultrasonic oscillation starts when the two spatulaes close,
In addition, the oscillation of the ultrasonic wave is stopped during the opening operation of the two spats. According to this configuration, since the ultrasonic vibration can be generated only when necessary, unnecessary vibration can be reduced, the life of the member can be extended, and the safety can be improved.

[0018]

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

FIG. 1 shows a preferred embodiment of an ultrasonic surgical apparatus according to the present invention, and FIG. 1 (A) shows an external view of the ultrasonic surgical apparatus of the present embodiment. B) shows the amplitude of the vibration in the ultrasonic surgical apparatus. The main body of the apparatus is not shown.

As shown in FIG. 1A, the ultrasonic surgical apparatus 10 is roughly composed of a handpiece 12 and a tweezer-shaped surgical tool (vibration holding tool) 22. Handpiece 12
Has an ultrasonic vibrator 20 of a bolted type. Specifically, the ultrasonic vibrator 20 made of a piezoelectric material or the like is pressed and sandwiched by two metal blocks 14 and 16, and as a whole, these members are supersonic. It is configured to vibrate sound waves.

The ultrasonic vibration generated by the handpiece 12 is transmitted to the proximal end 30 of the tweezer surgical tool 22. The tweezer-shaped surgical tool 22 has two spatula-shaped portions 24 and 26. Their proximal ends are integrally interconnected to form a proximal end 30. Spatula-shaped parts 24, 26
A plurality of irregularities 34, 36 are formed on the inner surface of the tip portions 24A, 26A. A tissue 100 such as a blood vessel is pressed and clamped by the portions 34 and 36, whereby ultrasonic vibration is transmitted to the tissue 100.

The base end 30 is provided with a bolt 30A, which engages with a bolt hole formed in the block 14. That is, various types of surgical tools 22 are prepared, and the surgical tools 22 can be exchanged and used according to a surgical site, a use, and the like.

In the surgical instrument 22, the two spatula-shaped portions 2
4, 26 are their tips 24A, 2 in the natural state.
6A is configured to be in an open state. In this embodiment, in order to further ensure the open state, 2
A spring 32 is interposed between the two spatula-shaped portions 24 and 26, and the elastic action of the spring 32 functions to separate the two spatula-shaped portions 24 and 26 from each other. However, the opening movement is prevented by the restricting action of the surgical instrument 22 at a fixed opening angle, that is, the opening angle is always maintained when no operation is performed.

Two pads 40 and 42 are provided outside the central portions of the spatula-shaped portions 24 and 26, respectively.
By pinching 42 closer together, for example by the belly of the thumb and the belly of the index finger, i.e. by pressing their pads 40, 42, the tips 24A, 26A of the surgical tool 22 can be brought closer together, and consequently Tissue 1 is formed by the tips 24A and 26A.
00 can be pressed and clamped.

Here, as shown in FIG.
The tip portions 24A and 26A of the pads 4 and 26 are located at antinodes of vibration, whereas the positions of the pads 40 and 42 are located at nodes of vibration. As a result, incision and hemostatic action on the tissue 100 can be performed efficiently, and safety for the operator can be enhanced. Pad 42
It is desirable to use a member having low thermal conductivity, and it is desirable to use a member having electrical insulation.

As shown in FIG. 1, the handpiece 12 is provided with an arch-shaped holding aid 46.
The holding aid 46 fits, for example, into an arch portion between the thumb and the index finger, that is, the two fingers extending from the holding aid 46 are fitted with the holding aid 46 between the fingers. It is possible to operate the surgical tool 22 by pressing the central portions of the spatula-shaped portions 24 and 26 with the thumb (and the forefinger) as described above.

In the embodiment shown in FIG.
Although the spatula-shaped portions 24 and 26 of FIG. 2 are integrated at their base ends, it is a matter of course that a coupling portion or the like may be provided at the base end 30 and the spatula-shaped portions 24 and 26 may be formed as two members. In any case, high operability similar to tweezers can be realized by performing an operation of bringing the spatula-shaped portions 24, 26 closer to each other with respect to a center line between the spatula-shaped portions 24, 26.

FIG. 2 shows another embodiment of the surgical instrument. In the surgical tool 122 shown in FIG.
The middle part is bent in a crank shape. The pad 40A is arranged at the bent portion as described above. According to the surgical tool 122 as shown in FIG. 2, for example, when performing a fine operation between organs, there is an advantage that the operation can be performed while securing a visual field. As described above, if surgical tools having various forms are prepared, an appropriate surgical tool 22 is always selected and used according to a surgical site and its use, thereby always maintaining good operability. There is an advantage that you can. Incidentally, in FIGS. 1 and 2, the case of the ultrasonic surgical apparatus is not shown, but a case may be provided as necessary to enclose the entire apparatus except for the distal end for performing the operation.

In FIG. 1, it is desirable to provide a switch for turning on and off the oscillation of the ultrasonic wave between the spatula-shaped portions 24 and 26. Such a switch is, for example, a pad 4
It is constituted by a pair of electrodes provided in the vicinity of the back side of 0 and 42, and when the opening angle of each of the spatula-shaped portions 24 and 26 reaches a predetermined value, it is turned on by electrical contact between them. Such a switch can also be constituted by a microswitch and a projection abutting on the microswitch. When the switch is turned on, an ultrasonic wave is generated by a control unit (not shown). On the other hand, when the switch is turned off, the oscillation of the ultrasonic wave is stopped. According to this configuration, it is possible to generate ultrasonic waves only when necessary for ultrasonic surgery, without performing a switch operation on the handpiece 12. In addition,
The operating point (operating angle) of the switch may be variably set according to the size of the target tissue.

[0030]

As described above, according to the present invention,
An ultrasonic operation apparatus with good operability can be configured. In particular, it is possible to perform hemostasis at the same time as incision across the tissue.

[Brief description of the drawings]

FIG. 1 is a view showing a preferred embodiment of an ultrasonic operation apparatus according to the present invention.

FIG. 2 is a diagram showing another embodiment.

[Explanation of symbols]

10 Ultrasound surgery device, 12 Handpiece, 14, 1
6 blocks, 22 tweezers-like surgical tools, 24, 26
Spatula-shaped part, 30 base end, 32 springs, 40, 4
2 pads, 46 holding aids.

Claims (10)

[Claims] 1. An ultrasonic vibrator, and a member to which ultrasonic vibration from the ultrasonic vibrator is transmitted to a base end, comprising two spatulaes bifurcated from the base end, And a vibration holding device for transmitting vibration to the tip portions of the two spatula, wherein a tissue is held between the tip portions of the two spatula and ultrasonic vibration is transmitted to the tissue from both sides. And ultrasonic surgical equipment. 2. The apparatus according to claim 1, wherein tips of the two spatulaes are located at positions of antinodes of vibration, and the tissue is cut by ultrasonic vibration of the tips.
In addition, an ultrasonic surgical apparatus is characterized in that hemostasis is performed by utilizing the heat-generating action of these distal ends. 3. The ultrasonic surgical apparatus according to claim 1, wherein a position of a vibration node in each of the spatulaes is set as a picking position. 4. The ultrasonic surgical apparatus according to claim 3, wherein a pad pressed by an operator's finger is provided at the position of the joint on an outer surface of each of the spats. 5. The ultrasonic surgical apparatus according to claim 1, wherein the vibration holding device has a tweezer shape. 6. The ultrasonic surgical apparatus according to claim 1, wherein the vibration holding device is exchangeably mounted. 7. The ultrasonic surgical apparatus according to claim 1, further comprising means for urging the two spats in an opening direction. 8. The apparatus according to claim 1, further comprising: a handpiece containing the ultrasonic vibrator; and a holding aid for holding the handpiece in an operator's hand. Ultrasound surgery device. 9. The ultrasonic surgical apparatus according to claim 1, wherein a tooth having a plurality of irregularities is formed inside a tip of the two spatulaes. 10. The ultrasonic surgical apparatus according to claim 1, further comprising means for controlling stop of ultrasonic oscillation in conjunction with opening and closing of the two spatula.