JPS60198141A - Handpiece of laser knife apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a handpiece of a laser scalpel device used for ablation, incision, etc. of an affected area.

Conventional structure and problems Currently, for example, in CO2 laser scalpel equipment, CO2
There is an optical fiber type that is currently being developed and is becoming popular. The tip of each type of light guide includes a hand piece that houses and holds an optical system for condensing the laser beam guided by the light guide.

In the optical fiber one-way system, the handpiece and the light guide are fixed, and a mirror multi-joint system in which the handpiece and the light guide are rotatable has not yet been developed. Unfortunately, when the surgeon holds the handpiece in his hand and performs a surgical operation, he experiences a great deal of resistance in his hand, which impairs the operability, which is one of the major advantages of the optical fiber one-type system.

In addition, with both the mirror multi-joint method and the optical fiber method, when the surgeon performs surgery while holding the handpiece,
Since the handpiece and the light guide path are unsanitary, surgical operations are performed with a transparent cover that has been previously sterilized covering the entire light guide path from the tip of the handpiece. In this case, slippage occurs between the transparent cover and the handpiece, and in order to prevent this, the handpiece must be gripped with great force, resulting in severe fatigue and the inability to perform precision work. Ta.

On the other hand, attempts have been made to sterilize the hand bead and the entire light guide, but there is a risk that the C02 laser, an optical component for use in the far infrared region, may deteriorate depending on the sterilization method, so this method is not recommended. It was difficult.

In addition, conventional handpieces have a lens that focuses the laser beam stored inside the handpiece, so if blood or oil gets on the lens during surgery, the handpiece must be disassembled and the lens removed. It is necessary to clean the lens after taking it out, and this work is complicated, and there is a risk of damaging the lens due to carelessness.

Purpose of the Invention The present invention has been made to solve the above-mentioned conventional problems, and its purpose is to improve operability during surgery, and to provide a laser that can be easily cleaned when the lens becomes dirty. It is located in a place that provides a female device no-dobes.

Structure of the Invention The present invention has a handpiece section that is configured to be easily attached to and detached from an internal pipe that is fixed to a light guide path and stores and holds a lens, and when connected to the internal pipe, it can be attached coaxially with the internal pipe. It is composed of a rotatable outer pipe, and furthermore, when the outer pipe is removed, the lens housed and held in the inner pipe is exposed at the very end surface of the inner pipe.

DESCRIPTION OF EMBODIMENTS FIGS. 1 to 5 showing an embodiment of the present invention will be described. FIG. 1 is an external view of a CO2 laser scalpel device using one type of optical fiber. In FIG. 1, 1 is a laser oscillator, 2 is a power supply and control unit for the laser oscillator 1,
Reference numeral 3 denotes an optical cape nope 4 which houses an optical fiber and is a bead part which houses and holds a lens for condensing a laser beam.

FIGS. 2 and 3 are diagrams showing a first embodiment of the present invention. 6 is an internal pipe fixed to the optical cable 3 with a screw 6. A lens 7 is fixed to one end of the internal pipe 5 by a holding ring 8. Reference numeral 9 denotes an optical fiber, which is inserted into a metal tube 10. A boss 11 is fixed to the internal vibro with a screw 12, and the optical fiber 9 is held coaxially with the internal pipe 5 by the screw 13.

Furthermore, slits 14 and 16 are formed at the ends of the internal vibro, and a locking portion 16 is formed at the portion sandwiched between the slits 14 and 15.

Reference numeral 17 denotes an external pipe, one end of which is formed with a tapered portion 18 to ensure the operator's field of view during surgery, and the other end of which is formed with a groove 19.

Most of the inner diameter of the internal pipe 5 is slightly larger than the outer diameter of the optical cable 3, but the slits 14, 1
6, a gap S larger than the step of the groove 19 of the external pipe 17 is formed. In addition, inside (Eve 6, pickpocket,, klA1gπ↑h packing shoki 2
0 Canu muscle deficiency A.

The handpiece section according to this embodiment has the above-mentioned structure, and in normal use, as shown in FIG.
The outer pipe 17 is in a state of engagement with the groove 19, and the outer pipe 17 can freely rotate relative to the inner pipe 5, but is configured to be able to move only slightly in the axial direction.

When the pressing part 20 of the internal pipe 5 is pressed with a finger, the locking part 16 and the groove 19 are disengaged, and the external pipe 17 can be easily removed from the internal pipe 5 as shown in FIG. When preparing for surgery, the external pipe 17 can be sterilized, and even if the lens 7 becomes dirty with blood or oil during the surgery, the lens is exposed to the end surface of the internal vibro, so it can be easily sterilized. It can be swept. The two-dot chain line 21 shown in FIG. 2 indicates the necessary range of the sterilized transparent cover.

In other words, since the external pipe can be sterilized, there is no need for a transparent cup that gets in the way during surgical operations.

Next, a description will be given of FIGS. 4 and 5 showing other embodiments of the present invention. Note that parts that are the same as those described above are given the same numbers.

An internal pipe 22 is fixed to the optical cable 3 with a screw 6 like the internal pipe 5 described above, and holds the optical fiber 9 and the metal tube 10 coaxially. Although not shown, a lens is held at the other end of the internal pipe 22. A groove 23 having an arcuate cross section is formed at a predetermined location of the internal pipe 22, but the cross-sectional shape of the groove 23 is not particularly required to be arcuate. 24 is an external pipe in which a projection 25 is formed and a steel ball 26 near the end.
Holes 27 and 28 are formed that can hold a predetermined number of. A tapered portion 29 is formed in the hole 27 to prevent the steel ball 26 from falling out in one direction. An operating ring 3o and a compression spring 31 are arranged on the external pipe 24, and the operating ring 30 is always urged toward the steel ball 26 by the compression spring 31.

The inner periphery of the operating ring has a large diameter portion 32. Tapered part 33° small diameter part 34. A tapered portion 35 is formed. Normally, the biasing force of the compression spring 31 causes the small diameter portion 34 of the operating ring 30 to
The steel ball 26 and the groove 23 of the internal pipe 22 are engaged with each other, and movement of the operating ring 3o in the direction of the steel ball is restrained by the tapered portion 35. In this state, since the steel ball 26 and the groove 23 are engaged, the outer pipe 24 can freely rotate relative to the inner pipe 22, but cannot move in the axial direction.

When removing the external pipe 24 from the internal pipe 22 when sterilizing the external pipe 24 or cleaning a lens (not shown), move the operating ring 30 in the direction of the arrow against the compression spring 31. , since a gap is created between the steel ball 26 and the large diameter portion 32, the steel ball 26 and the groove 2
3 disengages, and the external pipe 24 is disengaged from the steel ball 26 . It can be removed from the internal pipe 22 together with the operating ring 30 and compression spring 31.

Effects of the Invention - The present invention has the above-mentioned configuration, and by separating the no-end piece part into an internal pipe and an external pipe, and configuring the external pipe to be rotatable and detachable from the internal pipe, the external pipe Since it can now be sterilized, the transparent cover that gets in the way during surgical operations can be simply placed over the light guide path, eliminating problems such as slipping between the handpiece and the transparent cover, making surgical operations more comfortable. However, since the external pipe is rotatable, even when a one-way optical fiber type light guide path is used, the great advantage of the one-way optical fiber type is ease of operation. Furthermore, the lens can be easily cleaned by removing the external pipe, allowing for clean and safe surgery.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of a laser scalpel device equipped with a hand piece according to the present invention, and FIGS. 2 and 3 are cross-sectional views and exploded perspective views of a laser scalpel device according to a first embodiment of the present invention. Figures 4 and 6 are cross-sectional views of the knotted bead in the second embodiment. 5...Internal pipe, 17...External pipe, 1
6...--Locking portion, 19...Groove, 22...
- Internal pipe, 23... Groove, 24... External pipe, 26... Steel ball, 3o... Operating ring, 31... Compression spring. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (1)

[Claims] An internal pipe is fixed to the tip of an optical cable that guides the laser beam, and an optical system that focuses the laser beam from the optical cable is attached to the tip of the internal pipe, and is detachably attached to the internal pipe so as to cover the internal pipe. and,
A hand piece for a laser scalpel device, in which an external pipe is rotatably provided around the internal pipe.