JPH07148177A - Surgical operating hand-piece - Google Patents

Abstract

PURPOSE:To provide an interchangeable hand-piece for a surgical operation, in which the bending direction of the tip of a tip part can be determined in any direction when connecting a joint part as a ultrasonic vibration transmitter to a tip part having a bended working tip. CONSTITUTION:An ultrasonic vibration source 1, a joint part 2 and a tip part 3 are coverd with a protective cover comprising a main body cover 7 and a tip cover 10. The joint part 2 is connected to the tip part 3 by fitting protruding part at a back end of the tip part into a reentrant part of a front end of the joint part and fastening the connection with a fixing screw 4, so that the tip part can turn to set the bending direction of a working tip 6 thereof in any direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a joint portion and a tip portion of a surgical handpiece for crushing and removing living tissue by ultrasonic vibration.

[0002]

2. Description of the Related Art Conventionally, the connection between the joint portion and the tip portion has been done by providing a male screw on one side and a female screw on the other side. Therefore, when connecting a bent tip portion, the bending direction of the tip portion is threaded. There was a drawback that it was not possible to freely set the direction because it was decided by the position. Also, if tightened improperly, the male screw will break and remain inside the female screw and cannot be removed.Since the female screw is in a narrow place in the suction passage, there is a drawback that it will be difficult to remove it if foreign matter adheres. .

[0003]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems of the conventional surgical handpiece using ultrasonic vibration, and to bend the bent tip portion. (EN) Provided is a surgical handpiece in which the direction can be freely set, a breakage of a screw or the like at a joint portion between a joint portion and a tip portion can be prevented, and a safe and accurate operation can be performed.

[0004]

That is, the present invention provides an ultrasonic vibration source for crushing and removing living tissue by ultrasonic vibration, and transmitting mechanical vibration of ultrasonic frequency connected to the ultrasonic vibration source. A surgical handpiece comprising a vibrating body that expands and a protective cover of an insulator that accommodates and covers the ultrasonic vibration source and the vibrating body, wherein the vibrating body includes a joint portion and a tip portion. Is characterized in that the concave portion provided at the tip of the and the convex portion provided at the rear end of the tip portion are fitted together, and pressed and fixed by a fixing screw.Furthermore, the tip portion is rotatable with respect to the axis of the joint portion. It is attached, and the gap between the outer peripheral surface of the tip end portion of the tip portion and the inner peripheral surface of the opening portion of the tip of the fixing screw is 0.01 to 0.2 mm,
It is characterized in that a seal portion is provided between the inner peripheral surface of the concave portion at the tip of the joint portion and the outer peripheral surface of the convex portion at the rear end of the tip portion to prevent vibration damping.

The present invention will be described in detail below with reference to the drawings. FIG. 1 is a view for explaining a basic structure of a surgical handpiece according to an embodiment of the present invention, and FIG. 2 is a view for showing a joint structure between a joint portion and a tip portion.

As shown in FIG. 1 (a), the ultrasonic vibration source (1) is joined to a vibrating body composed of a joint portion (2) and a small-diameter tip portion (3) by means such as a screw, Inside these, a suction passage (5) is provided penetrating in the length direction. The joint part (2) and the tip part (3) are separately manufactured as shown, and the fixing screw (4)
Are joined by. Further, the joint portion of the joint portion (2) and the tip portion (3) is located between the node portion and the abdomen portion of ultrasonic vibration to reduce the stress applied to the node portion of the tip portion (3). There is.

These members that vibrate ultrasonically are housed and covered by a protective cover made of a heat-resistant resin having an insulating property. As shown in FIGS. 1B and 1C, the protective cover includes a main body cover (7) for accommodating the ultrasonic vibration source (1) and a part of the joint portion (2), and a joint portion (2). ) And a tip cover (1) covering the tip portion (3).
0).

As shown in FIG. 2, the joint portion (2) and the tip portion (3) are joined by a concave portion provided at the tip of the joint portion (2) and a convex portion provided at the rear end of the tip portion (3). The tip portion (3) is fitted to prevent the position of the tip portion (3) from shifting, and the tip portion (3) is rotated to set the bending direction of the tip working portion (6) to a predetermined direction, and the tip of the joint portion (2) is set. The fixing screw (4) against the connection screw (12) provided on the outer circumference of the part
By tightening. By tightening with the fixing screw (4), the joint surface a (13) between the joint portion (2) and the tip portion (3) and the joint surface b (15) between the tip portion (3) and the fixing screw (4) are securely attached. By virtue of the pressure contact, the vibration from the joint portion (2) can be transmitted to the tip portion (3).

The gap (14) between the outer peripheral surface of the base end of the tip portion (3) and the inner peripheral surface of the tip opening of the fixing screw (4) is 0.
The range is about 01 to 0.2 mm. This gap is 0.0
When it is 1 mm or less, the base end of the tip part (3) and the tip opening of the fixing screw (4) are easily contacted with each other during ultrasonic vibration,
There is a problem that vibration is attenuated by friction. On the other hand, if the gap is increased, the joint surface b (15) between the tip portion (3) and the fixing screw (4) becomes small, which is not preferable. A gap of 0.2 mm is sufficient. Further, a seal portion (11) is provided between the inner peripheral surface of the concave portion at the tip of the joint portion (2) and the outer peripheral surface of the convex portion at the rear end of the tip portion (3). This is for keeping the suction passage (5) airtight, and for the tip portion (3).
As in the case of the gap (14) between the fixing screw (4) and
This is to reduce vibration damping due to friction. An elastic material such as an O-ring is used for the seal portion (11).

The method of using the surgical handpiece according to the present invention, as shown in FIG. 3, is an ultrasonic oscillator (16).
To the ultrasonic vibration source (1) in the handpiece (17) from which a high-frequency power having a resonance frequency is supplied to generate ultrasonic vibrations, and a vibration body combining the joint part (2) and the tip part (3) is formed. Then, ultrasonic vibrations are transmitted and expanded, and the work part (6) at the tip of the tip part (3) carries out the crushing work of living tissue and the like. Simultaneously with the start of vibration, the roller pump (23) is activated to move the bottle (21) to the irrigation tube (2).
2) Inject the irrigation liquid into the tip cover (10) through the irrigation nipple (11). The irrigation liquid passes through the annular passage between the inner wall of the tip cover (10) and the tip portion (3) and passes through the tip cover (10).
It is jetted by ultrasonic vibration from the tip of the to the working part (6). The irrigation liquid and the ultrasonic vibration of the working unit (6) crush and emulsify the living tissue. The emulsified crushed pieces pass through the suction passage (5) inside the tip portion (3), the joint portion (2), and the ultrasonic vibration source (1) by the suction pressure of the suction pump (19), and then the suction nipple (9). ), A suction tube (20), and a suction bottle (1
Collected in 8).

[0011]

According to the present invention, since the tip portion can be rotated about the axis of the joint portion, the bending direction of the tip working portion can be freely set, and the threading position of the tip portion, which is a conventional defect, can be set. Since the incompatibility with the joint portion due to an error is removed and the problem due to breakage of the screw portion and the like is greatly improved, it is useful as a surgical handpiece for crushing by ultrasonic vibration.

[Brief description of drawings]

FIG. 1 is a view showing a basic structure of a surgical handpiece according to an embodiment of the present invention, (a) is a cross-sectional view in which an ultrasonic vibration source and a vibrating body are connected, and (b) is a main body cover. Is a side view with the main body cover and the chip cover attached.

FIG. 2 is a diagram showing an example of a joint structure of a joint portion and a tip portion in the present invention.

FIG. 3 shows an overall system using a surgical handpiece according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ultrasonic vibration source 2 Joint part 3 Tip part 4 Fixing screw 6 Working part 11 Seal part 12 Connection screw 13 Bonding surface a 14 Gap 15 Bonding surface b

Claims (3)

[Claims] 1. An ultrasonic vibration source for crushing and removing living tissue by ultrasonic vibration, a vibrating body connected to the ultrasonic vibration source for transmitting and expanding mechanical vibration of ultrasonic frequency, and ultrasonic vibration. A surgical handpiece comprising a protective cover of an insulator for accommodating and covering a source and a vibrating body, wherein the vibrating body is composed of a joint portion and a tip portion, and a concave portion and a tip portion provided at the tip of the joint portion. A surgical handpiece characterized in that it is fitted with a convex portion provided at the rear end, and pressed and fixed by a fixing screw. 2. The surgical handpiece according to claim 1, wherein the tip portion is rotatably attached to the axis of the joint portion. 3. A gap between the outer peripheral surface of the tip end portion of the tip portion and the inner peripheral surface of the opening portion of the fixing screw tip is set to 0.01 to 0.2 mm,
The surgical hand according to claim 1, wherein a seal portion is provided between the inner peripheral surface of the concave portion at the tip of the joint portion and the outer peripheral surface of the convex portion at the rear end of the tip portion to prevent vibration damping. piece.