JP3582816B2 - Ultrasound surgery device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an ultrasonic surgical apparatus for performing incision or the like of a tissue by ultrasonic vibration.
[0002]
[Prior art]
2. Description of the Related Art A conventional ultrasonic surgical apparatus is roughly divided into a main body including a power supply and a control unit, 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, dissected, and emulsified.
[0003]
Japanese Patent Publication No. Hei 8-505801 discloses an apparatus that sandwiches tissue between a blade that vibrates ultrasonically and a clamp that opens and closes the blade, incises the tissue, and performs hemostasis. With an electrosurgical instrument, tissue can also be dissected and hemostasis can be performed, but at that time, smoke and smell are generated. On the other hand, incision and hemostasis by ultrasonic surgery can eliminate or significantly reduce smoke and odor.
[0004]
[Problems to be solved by the invention]
However, the device disclosed in Japanese Patent Publication No. 8-505801 has a special form used under surgery using a laparoscope, so that incision and hemostasis can be performed while removing tissue by general surgery. It is not suitable for the intended use. There is a demand for an ultrasonic surgical device having good operability, similarly to tweezers and forceps used in general surgery, and in particular, those capable of obtaining a hemostatic effect.
[0005]
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.
[0006]
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]
[Means for Solving the Problems]
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, and is bifurcated from the base end. A vibration holding device having two spats and transmitting vibration to the tips of the two spats; and holding the tissue between the tips of the two spats and applying ultrasonic waves to the tissue from both sides. Vibration is transmitted , and a pad is provided on an outer side surface of each of the spats for picking and closing the two spats with an operator's finger .
[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, two spats are pressed with an operator's finger | toe from the outer side, and mutually approached, and since tissue can be pinched | interposed by the front-end | tip part of two spats, favorable operation is possible. In addition, the ultrasonic vibration can be efficiently transmitted to the tissue, and the incision and hemostasis can be enhanced.
[0009]
Desirably, the tips of the two spatulaes are positioned as antinodes of vibration, the tissue is cut by ultrasonic vibration of the tips, and hemostasis is performed by utilizing the heat generating action of the tips. Done.
[0010]
Desirably, the position of the node of the vibration in each spatula is set as the picking position. That is, if the position is at a node of the vibration, the vibration is not hindered even if the finger is pressed.
[0011]
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 pad is made non-conductive, the electrical safety of the operator can be enhanced.
[0012]
Preferably, the vibration holding device has a tweezer shape. According to this configuration, the same operability as that of the conventional tweezers, in particular, fine local surgical operation can be favorably performed.
[0013]
Desirably, the vibration holding device is exchangeably mounted. According to this configuration, an appropriate holding tool can be selectively used depending on an operation target, a site, and the like.
[0014]
Preferably, there is provided a 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.
[0015]
Desirably, a handpiece including the ultrasonic vibrator and a holding aid for holding the handpiece in an operator's hand are included. According to this configuration, the operability can be improved by the holding assisting tool, and the burden on the operator can be reduced even if the operation is performed for a long time.
[0016]
Desirably, teeth having a plurality of irregularities are formed on the inside of the tips of the two spats. According to this configuration, the tissue can be stably held, and the incision action can be enhanced.
[0017]
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, the oscillation of the ultrasonic wave is started when the two spatulaes are closed, and the oscillation of the ultrasonic wave is stopped when the two spatulaes are opened. According to this configuration, since the ultrasonic vibration can be generated only when it is necessary, unnecessary vibration can be reduced, the life of the member can be extended, and the safety can be improved.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.
[0019]
FIG. 1 shows a preferred embodiment of an ultrasonic surgical apparatus according to the present invention. FIG. 1 (A) shows an external view of the ultrasonic surgical apparatus of the present embodiment, and FIG. Indicates the amplitude of vibration in the ultrasonic surgical apparatus. The apparatus body is not shown.
[0020]
As shown in FIG. 1A, the ultrasonic surgical apparatus 10 is roughly divided into a handpiece 12 and a tweezer-shaped surgical tool (vibration holding tool) 22. The handpiece 12 has a bolt-clamped ultrasonic vibrator 20. 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 these members are used. The whole is configured to perform ultrasonic vibration.
[0021]
Ultrasonic vibration generated by the handpiece 12 is transmitted to the proximal end 30 of the tweezers 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. A plurality of concavities and convexities 34, 36 are formed on the inner surface of the tip portions 24A, 26A of the spatula portions 24, 26. 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.
[0022]
A bolt 30 </ b> A is provided on the base end portion 30, and the bolt 30 </ b> A engages with a bolt hole formed in the block 14. That is, various kinds of surgical tools 22 are prepared, and the surgical tools 22 can be exchanged and used in accordance with a surgical site, a use, and the like.
[0023]
In the surgical instrument 22, the two spatula-shaped portions 24, 26 are configured such that their tips 24A, 26A are in an open state in a natural state. In the present embodiment, a spring 32 is interposed between the two spatula-shaped portions 24 and 26 in order to further ensure the open state, and the elastic action of the spring 32 is applied to the two spatula-shaped portions. 24 and 26 function to separate them from each other. However, the opening movement is prevented by the regulating action of the surgical instrument 22 at a constant opening angle, that is, the opening angle is always maintained in a state where no operation is performed.
[0024]
Two pads 40, 42 are provided outside the central portions of the spatula-shaped portions 24, 26, and each pad 40, 42 is pinched so as to be close to each other, for example, by the belly of the thumb and the belly of the index finger, that is, those pads By pressing the pads 40 and 42, the distal ends 24A and 26A of the surgical tool 22 can be brought closer to each other, and as a result, the tissue 100 can be pressed and clamped by the distal ends 24A and 26A.
[0025]
Here, as shown in (B), the tip portions 24A and 26A of the spatula-shaped portions 24 and 26 are positions of antinodes of vibration, while the positions of pads 40 and 42 are positions of nodes of vibration. ing. Thereby, incision and hemostatic action on the tissue 100 can be performed efficiently, and safety for the operator can be enhanced. It is desirable that the pad 42 be made of a member having a low thermal conductivity, and it is desirable that the pad 42 be made of an electrically insulating member.
[0026]
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 center portions of the spatula-shaped portions 24 and 26 with the thumb (and the forefinger) as described above.
[0027]
In the embodiment shown in FIG. 1, the spatula-shaped portions 24 and 26 of the surgical tool 22 are integrated at their base ends. Of course, a coupling portion or the like is provided at the base end 30 and the spatula-shaped portions are provided. 24 and 26 may be 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.
[0028]
FIG. 2 shows another embodiment of the surgical instrument. In the surgical instrument 122 shown in FIG. 2, an intermediate portion thereof 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 which wraps the entire apparatus except for the distal end for performing the operation as necessary.
[0029]
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 composed of, for example, a pair of electrodes provided in the vicinity of the back side of the pads 40 and 42, and when the opening angle of each of the spatula-shaped portions 24 and 26 reaches a predetermined value, the switches are electrically contacted. It operates on. Such a switch may 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. The operating point (operating angle) of the switch may be variably set according to the size of the target tissue.
[0030]
【The invention's effect】
As described above, according to the present invention, an ultrasonic surgical apparatus with good operability can be configured. In particular, it is possible to stop bleeding simultaneously with 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]
Reference Signs List 10 ultrasonic surgical device, 12 handpiece, 14, 16 block, 22 tweezers-like surgical tool, 24, 26 spatula-shaped part, 30 base end, 32 spring, 40, 42 pad, 46 holding aid.

Claims (10)

An ultrasonic transducer,
A member for transmitting ultrasonic vibrations from the ultrasonic vibrator to a base end portion, the member having two spatulaes bifurcated from the base end portion; Vibration holding device,
Including
Ultrasonic vibration is transmitted from both sides to the tissue by sandwiching the tissue between the tips of the two spatula ,
An ultrasonic surgical apparatus , wherein a pad is provided on an outer side surface of each of the spats so as to pinch and close the two spats with an operator's finger . The device of claim 1,
The tips of the two spatulaes are positioned as antinodes of vibration, the tissue is cut by ultrasonic vibrations of the tips, and the bleeding is stopped by utilizing the heat generating action of the tips. An ultrasonic operation apparatus characterized by the above-mentioned. The device according to claim 1 or 2,
The ultrasonic surgical apparatus , wherein the pad is provided at a position of a node of vibration of each of the spatula. The device of claim 1,
An ultrasonic surgical apparatus, wherein the vibration holding device has a tweezer shape. The device of claim 1,
An ultrasonic surgical apparatus, wherein the vibration holding device is interchangeably mounted. The device of claim 1,
An ultrasonic surgical apparatus comprising means for urging the two spats in the opening direction. The device of claim 1,
A handpiece incorporating the ultrasonic transducer,
A holding aid for holding the handpiece in an operator's hand,
An ultrasonic surgical apparatus, comprising: The device of claim 1,
An ultrasonic surgical apparatus, wherein teeth having a plurality of irregularities are formed on the tip portions of the two spatulaes. The device of claim 1,
An ultrasonic surgical apparatus comprising means for controlling the stop of ultrasonic oscillation in conjunction with the opening and closing of the two spats. The device according to claim 9,
The means for controlling the stop of the ultrasonic oscillation starts the ultrasonic oscillation when the two spatulaes are closed, and stops the ultrasonic oscillation when the two spatulas are opened. And ultrasonic surgical equipment.

Images