JPS59225048A - Laser knife - 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 Mizumoto 1n relates to a laser scalpel equipped with a tip rod member for irradiating radar light that comes into contact with tissue.

For laser surgery, which connects a light source and a quartz rod with an optical fiber and uses light and heat from the rod tip to perform cutting, incision, and coagulation and hemostasis without applying pressure to the affected area or treatment area. The device is already in practical use, but [
When a hot ray is emitted from the end of the rod and directly hits the tissue, the diameter of the tip of this rod is large and the area of the end is wide, so the coagulation range matches the diameter of the tip, and for example, a wide incision unnecessary for incision may be caused against the tissue. If it is only done, the deepening of the coagulation depth, which does not lead to fFA failure and is disadvantageous for cutting and dissection, is O11! The problem was that it could happen.

In other words, in conventional surgical instruments incorporating a straight quartz rod, the coagulation depth varies depending on the laser light output at the output end, the illumination distance, the distance to the irradiated area, the color of the tissue, and the state of blood flow. °
Even if it is possible, the solidified diameter is unnecessarily large, and the carbonized layer above the solidified part also has a wide range depending on the solidified diameter. l1w! J is difficult to get deep, in other words, the carbonized layer prevents the penetration of light rays, and the 111 machine directly under the carbonized layer is only condensed β1, but not evaporated.

The present invention solves the above-mentioned drawbacks, and helps the intensive application of laser light to significantly enhance the transpiration ability of the tissue, thereby minimizing the thickness of coagulation by accelerating transpiration, and reducing the area in contact with the laser scalpel. This makes it possible to perform the surgery with an incision width that approximately matches the g7J diameter of the tip.

In order to solve the above-mentioned problems, the present invention provides a fiber phosphor,
A distal end rod member is optically connected to the fiber light guide, a gripping member mechanically holds and fixes the distal end member and the fiber light guide, and the distal end rod member is connected to a cylindrical base. The present invention provides a laser scalpel characterized by being constituted by a truncated circular m section and a small-diameter exit end at the leading edge of this truncated conical section.

The invention will now be described with reference to embodiments of the accompanying drawings.

In Figures 1 to 3, 1 is a device corresponding to the handpiece of the laser scalpel, 2 is the tip of the laser scalpel, 3 is the light guiding material, 4 is the gripping member whose circumferential surface is knurled, and 5 is the handpiece of the laser scalpel. A connecting member 10 having a knurled surface connects the light guide rod 3 and the tip rod member 2, 6 is a light guide fiber connected to a laser light source (not shown), and 7 is a light guide attached to a gripping member. A fiber fixing member 8 is a light guide fiber fixing member for maintaining an appropriate connection gap 9 between the light guide rod 312v surface and the light guide fiber 6 and fixing the fiber through the fiber. As shown in , the Cii D Rad member has a circular base 21 with a uniform white diameter, a truncated conical part 22 extending from this L1 part with a reduced diameter, and a small φ flat output end 23. Right J.

The above-mentioned tip rod member 2 is made of refire, which has a high strength, hardness, and chemical resistance, and has a low thermal conductivity of about 10, as the part that comes into contact with the coarse weave. It is preferable that the light guiding rod 3 is made of quartz.

Further, the connecting member 5, the gripping member 4, and the fiber fixing member 7 may be made of stainless steel or the like, and may be added to the gripping member 8I and the fiber fixing member 7.

As is clear from the cross-sectional view in Fig. 2, the tip rod member 2
The tip of the light guide fiber 6 is fixed within the gripping member 4 in alignment with the central axis of the light guide rod 3, and is directed toward the tip of the light guide fiber 6 via the rod 3. Therefore, the situation is the same as if the tip of the light guide fiber 6 were open at the distal end of the distal end rod member 2.

Since 18 is formed as described above, the S9 light incident on the tip rod member 2 from the light guide 1:1 beam 3 has its straight component S
is emitted as it is from the most advanced output end 23, and the component a that is incident at an angle is reflected by the cylindrical base 2I, and after entering the conical part 22, the part that reaches the critical angle is subjected to multiple reflections while leaking light. The light is condensed and emitted from the output end 23. This output Rede light is a combination of the remaining linear component S and oblique component a, and moreover, it passes through the small-diameter output end 23 and has a density of 1 energy per unit area.

Thus, according to the present invention, the truncated conical part 22 is placed at the end of the tip rod member 2 to form the small diameter output @i23 at the tip end, so that the incision, incision, evaporation, coagulation, etc. 1M surgery can be performed with high precision and speed while minimizing tissue invasion.

Figure 4 shows a necrotic layer produced by a conventional laser scalpel, with a deep coagulation layer B formed in the tissue over a wide width, and a carbonized layer C on the outer surface.
The upper and lower transpiration layers are relatively shallow. On the other hand, according to the laser scalpel according to the present invention, as shown in FIG. 5, a deep evaporative layer D' is formed by cutting deeply into the tissue A, and this evaporative layer is cured to form a thin carbonized layer C' and a solidified JGB on the back surface thereof. ' is generated.

As mentioned above, according to Hontakuro J, Rure IJ” female,
Laser first comes into direct contact with tissue! ) The tapered shape of the truncated conical part that forms one end and the small (J:) shape of the truncated cone end form the OJ end. QJ provides efficient and sharp cutting action, allowing for clean treatment.
Thus, the benefits of the present invention as a laser scalpel are great.

[Brief explanation of the drawing]

Fig. 1 is a perspective side view of a laser scalpel according to the present invention, Fig. 2 is a longitudinal sectional view of the scalpel shown in Fig. 1, Fig. 3 is an explanatory diagram of the state in which light enters the tip rod member, and Fig. 4 is a conventional scalpel. FIG. 5 shows a cross-sectional view of one layer solidified by A-Komyo's scalpel. 1... Rage scalpel 2... Tip rod member 4
...Gripping member 6...Light guiding fiber 21
...Cylindrical column Di 22...l, 7-layer head circle 1
11δ (123... Output end patent applicant Siebel Kikai Co., Ltd. (4 others) Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Procedural amendment February 2, 1980 1 Office Commissioner Kazuo Wakasugi Indication of the Tono case Patent Application No. 100622 of 1982 2, Name of the invention Relationship to the Laser Scalpel Correction Person Case Patent Applicant Address Name Siebel Machinery Co., Ltd. Agent 5゜ (Attachment) 1) [Scope of Claims] Correct as shown below. 2. comprising a fiber light guide, a tip rod member optically connected to the fiber light guide, and a gripping member mechanically holding and fixing the tip rod member and the fiber light guide; A laser scalpel characterized in that the tip rod member has a cylindrical base, a truncated conical part, and a small diameter output end at the most distal end of the truncated conical part. 2) The statement in the specification is amended as follows. Page Line Before correction After correction 2 From the bottom 2 Tip diameter Tip 3 11 3rd
Figure 6 and Figure 3a 4 6 Flat Sharp output end 23' or 4 From below 4 23 23' or 2
35 2 2a 23'also(
235 6 2323' or 23 5 8 and sharp or 5
8 23 23' or 235
11 Truncated conical part Conical part 5 11
Small diameter Sharp or small diameter 5 12 2
323' or 23 6 5-6 truncated conical part conical part 6 6
Small diameter Pointed or small diameter 6 From the bottom 1
Truncated conical part Conical part 6 From the bottom 7 Fig. 3
Figure 3a and Figure 3 712323.23' 3) Add attached Figure 3a to the attached figures. 4) Page 3 of the specification, line 2 “for” and “fiber”
Insert the following statement between. [Comprising a fiber light guide, a tip rod member optically connected to the fiber light guide, and a gripping member that mechanically holds and fixes the tip loft member and the fiber light guide, A laser scalpel is provided in which a tip end member has a cylindrical base, a conical part, and a sharp output end at the tip of the conical part. In addition, the present invention is based on the following: Summary 3a Figure Proceedings Amendment Written by Kazuo Wakasugi, Commissioner of the Japan Patent Office, June 3, 1982 1. Indication of case Patent application No. 100622 of 1988 2. Title of the invention. Laser scalpel 6. Relationship with the case of the person making the amendment Patent applicant address name Siepel Machinery Co., Ltd. 4. Agent 5. Column 6 of [Detailed description of the invention] of the specification subject to amendment 4. Description of contents of amendment No. 4 Page lines 6 to 9 “contact the organization...”
It is preferable that ``...'' be changed to ``and''. that's all

Claims (1)

[Scope of Claims] A fiber light guide, a tip rod member optically connected to the fiber light guide, and a gripping member that mechanically holds and fixes the tip rod member and the fiber light guide. , wherein the tip rod member has a cylindrical base and a truncated 11
A laser scalpel characterized by having a small-diameter emitting end portion at the cutting edge of the truncated part.