JPS60113009U

JPS60113009U - surgical cutting instruments

Info

Publication number: JPS60113009U
Application number: JP148984U
Authority: JP
Inventors: 楠　博幸
Original assignee: オリンパス光学工業株式会社
Priority date: 1984-01-10
Filing date: 1984-01-10
Publication date: 1985-07-31

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図ないし第６図は本考案の外科用切除器具′の１実
施例に係り、第１図は１実施例の縦断面図、第２図は取
込刃口の形状を示す平面図、第３図は駆動伝達系を示す
側面図、第４図は第１図のＡ−Ａ線断面図、第５図は駆
動軸の後端周辺を示　−す断面図、第６図は使用状態を
示す説明図である。１・・・外科用切除器具、２・・・把持部、３・・・挿
入部、４・・・外套管、５・・・固定内管、７・・・摺
動体、８・・・取込刃口、９・・・内刃、１１１・・・
固定部材、１７・・・駆動伝達系、１８・・・モータ、
１９・・・駆動軸、２１・・・カム、２５・・・止めね
じ、２６・・・駆動アタッチメント、２６ａ・・・中心
孔、２６ｂ・・・軸受部、２７・・・摺動軸、２７ａ・
・・球状部、２８・・・摺動アタッチメント、３２・・
・軸押えねじ、４０・・・膝部、４１・・・関節鏡、４
３・・・テレビカメラ、４４・・・表示装置。第２図　　　　（Ａ） ’１　ｉ　−−1 to 6 relate to one embodiment of the surgical cutting instrument of the present invention, FIG. 1 is a longitudinal cross-sectional view of the first embodiment, and FIG. 2 is a plan view showing the shape of the cutting blade opening. Figure 3 is a side view showing the drive transmission system, Figure 4 is a sectional view taken along line A-A in Figure 1, Figure 5 is a sectional view showing the area around the rear end of the drive shaft, and Figure 6 is the state in use. FIG. DESCRIPTION OF SYMBOLS 1... Surgical resection instrument, 2... Gripping part, 3... Insertion part, 4... Outer tube, 5... Fixed inner tube, 7... Sliding body, 8... Removal part. Inner blade mouth, 9... Inner blade, 111...
Fixed member, 17... Drive transmission system, 18... Motor,
19... Drive shaft, 21... Cam, 25... Set screw, 26... Drive attachment, 26a... Center hole, 26b... Bearing portion, 27... Sliding shaft, 27a・
...Spherical part, 28...Sliding attachment, 32...
・Shaft retainer screw, 40...Knee part, 41...Arthroscope, 4
3...TV camera, 44...Display device. Figure 2 (A) '1 i --

Claims

[Scope of utility model registration request]

(1) The rear wheel side is connected to a large-diameter gripping part, and a fixed inner tube is installed inside the outer tube with an open tip, and the tip of the fixed inner tube is made to protrude to open a tissue-taking opening on the outer periphery. An inner cutter is provided at the edge of the cutting edge, and the inside of the fixed inner tube is used as a section suction path, and a sliding body is installed between the outer tube and the fixed inner tube so as to be able to freely slide in the axial direction. In a surgical cutting instrument, the blade opening of a fixed inner tube can be opened and closed, and an outer cutter that engages with the inner cutter is provided at the tip of the sliding body. A drive attachment that converts the rotation of the cam back and forth through the engagement of the engaging spline provided in the cam rotation center hole and regulation of the cam groove provided on the cam's outer circumference, and is rotatably attached to the rotation center hole on the front surface of the cam. When the movement is converted into longitudinal movement in the axial direction, the fixed member is fixed in the gripping portion and the fixed inner tube is attached to the sliding shaft whose rear end is attached to the drive attachment. In a drive transmission system that reciprocates the sliding body in the axial direction by guiding the sliding attachment installed in the distal end side of the gripping portion through a through hole to which the base of the sliding body is connected, the sliding shaft A spherical part is provided at at least one of the front end and the rear end of the spherical part, and a bearing part of the spherical part is formed on the drive attachment or the sliding attachment, so that the movement of the sliding shaft in the axial direction can be adjusted. A surgical resection instrument, characterized in that the surgical resection instrument is mounted on a bearing.

(2) The bearing section has an arcuate bearing surface that can be smoothly secured against the movement of the spherical section, and a set screw prevents movement of the accommodated spherical section in the axial direction. The surgical cutting instrument according to claim 1, which is characterized in that the surgical cutting instrument is regulated.

(3) The surgical resection instrument according to claim 1, wherein the fixed inner tube can be attached to the fixing member by detachable attachment means.