CN213465263U

CN213465263U - Working sleeve with inclined opening and knife edge

Info

Publication number: CN213465263U
Application number: CN202022093929.7U
Authority: CN
Inventors: 杜清峰; 王沙沙
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-06-18
Anticipated expiration: 2030-09-17

Abstract

The utility model discloses a work sleeve pipe of cutting edge is taken to opening to one side grinds into the sharp shape that has two-sided cutting edge with the oblique opening edge of work sleeve pipe, will easily grind off so and block the sheathed tube partial joint suddenly, need not be with the help of other instruments again to possible real-time taking shape, convenient and fast, this sleeve pipe is rotatory grinding moreover, can not skid, and the security improves greatly, reduces the neural accidental injury probability. Meanwhile, the tip of the sleeve is kept to be blunt, so that when the sleeve is formed, the tip can be utilized to push away nerve tissues in advance to prevent the nerve from being accidentally injured by a follow-up blade, and the blunt shape reserved at the tip also reduces accidental injury of the tip to the nerve.

Description

Working sleeve with inclined opening and knife edge

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a visual work sleeve pipe that takes shape for intervertebral foramen mirror operation.

Background

The prolapse of intervertebral disc is a disease that the nucleus pulposus extrudes and compresses the nerve and causes pain, numbness, weakness and the like of limbs as main symptoms, the operation treatment means comprises minimally invasive treatment and open operation treatment, wherein the intervertebral foramen mirror technology is widely popularized as the most minimally invasive technical means at present, and the intervertebral foramen mirror operation technology is developed into the whole visual arthroplasty and the nuclectomy at present along with the development of the intervertebral foramen mirror operation technology and the improvement of instruments. Whole visual articular process of taking shape has improved the operation security greatly, and the validity that the articular process takes shape has been improved, whole study curve that has reduced the intervertebral foramen mirror technique, present whole visual articular process of taking shape, include with the help of the mirror outer loop according to going on looking down the articular process take shape, or bone sword under with the help of in-mirror trepan or mirror, also can grind and bore with the help of power abrasive drilling under the mirror and carry out articular process and polish, but above instrument all has corresponding limitation, mirror outer trepan and in-mirror trepan have two drawbacks when polishing articular process, firstly, in the bone piece gets into the brill, need extract the trepan and take off the bone piece and continue to polish again, but the trepan skids the mistake and injures nerve root easily. The bone knife under the mirror is a tool inside the mirror under the mirror, the bone polishing efficiency is low, the power abrasive drill under the mirror is high in price, and the possibility of injuring nerves by mistake is provided, and a certain learning curve is provided.

SUMMERY OF THE UTILITY MODEL

In the actual operation process, the operator main objective is to put into the intervertebral foramen with the work sleeve pipe, and in operation process, if the articular process takes shape inadequately, the work sleeve pipe can't be put into intervertebral foramen, the sleeve pipe is often blocked on articular process, rotatory work sleeve pipe this moment, to partial osteoporosis's case, can grind off partial sclerotin with the help of work sleeve pipe edge, consequently if can polish into the sharp shape that has two-sided cutting edge with work sleeve pipe edge, then will easily grind off the partial articular process that blocks the sheathed tube, need not be with the help of other instruments again, thereby can accomplish real-time shaping, high convenience and fastness, and this sleeve pipe is rotatory grinding, can not skid, the security improves greatly, reduce nerve accidental injury probability.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the both sides of the inclined opening end of the working sleeve are polished into a double-sided blade shape, and the tip of the reserved sleeve is blunt so that when the working sleeve is formed, the tip can be utilized to push away nerve tissues in advance to prevent the nerve from being accidentally injured by a follow-up blade, and the blunt shape reserved at the tip also reduces accidental injury of the tip to the nerve.

The blade-shaped working cannula has a peripheral diameter of 7.5mm, an inner diameter of 6.5mm and a length of 200m, so that an endoscope can be placed in the cannula. The handle at the end remains, still open, short on one side and long on the other side, for rotation and reference to the cannula opening direction.

Drawings

Fig. 1 is a structural schematic diagram of a working sleeve with an inclined opening and a blade: 1. the short handle at the tail end of the sleeve faces the opening side; 2. the tail end of the sleeve is an endoscope placing channel; 3. the long handle at the tail end of the sleeve is towards the back side of the opening; 4. a sleeve body portion; 5 and 7 are both sharp double-sided edges ground by the inclined opening edge of the tip of the sleeve; 6. leaving the tip 3mm as a blunt portion.

Fig. 2 is a schematic diagram of the operation of the casing: 1. the short handle at the tail end of the sleeve faces the opening side; 2. the tail end of the sleeve is an endoscope placing channel; 3. the long handle at the tail end of the sleeve is towards the back side of the opening; 4. a sleeve body portion; 5 and 7 are both sharp double-sided edges ground by the inclined opening edge of the tip of the sleeve; 6. keeping the tip 3mm as a blunt part; 8 and 9 are the articular process bony portions that block the cannula from entering the intervertebral foramen.

Detailed Description

An endoscope is placed into the sleeve from an opening 2 at the tail end of the sleeve, the working sleeve with the inclined opening and the blade is pushed to the surface of the articular process under the guidance of the visual field of the endoscope, the working sleeve is clamped on the articular process at 8 and 9, the

edges

5 and 7 of the tip of the bone blocking sleeve around the articular process enter intervertebral holes, and the blade-

shaped edges

5 and 7 at the two sides of the opening of the sleeve are used for grinding parts of

bones

8 and 9 blocking the advancement of the articular process until the working sleeve is pushed to expose nerve roots or a decompression target point.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations can be made by those skilled in the art without inventive work on the basis of the technical solution of the present invention.

Claims

1. A working sleeve with an inclined opening and a blade comprises a sleeve tail end, a body part (4) and a head end, wherein the sleeve is hollow and cylindrical, has an inner diameter of 6.5mm, an outer diameter of 7.5mm and a length of 200mm, wherein the tail end is designed with a T-shaped handle, the axial direction of the short handle (1) is consistent with the direction of the oblique opening of the head end, the axial direction of the long handle (3) is consistent with the back side of the oblique opening of the head end, the tail end is a circular opening, the head end is in the shape of the oblique opening, the length of the oblique opening is 15mm, and two side parts of the inclined opening are double-sided sharp cutting edges, the sharp end of the inclined opening is kept to be blunt after 3mm, sharp polishing is not carried out, when the endoscope is in operation, the endoscope is placed in the tail end opening, the head end of the sleeve is clamped on the articular process sclerotin under the direct vision of the endoscope, so that the inclined surface of the sleeve is contacted with the articular process sclerotin on two sides, the rotating working sleeve cuts part of sclerotin entering the blocking sleeve under the monitoring of the endoscope until the sleeve completely enters the intervertebral hole to reach the target spot.

2. The obliquely-opened working sleeve with the blade according to claim 1, wherein the working sleeve is a circular opening at the tail end, an obliquely-shaped opening at the head end, the outer diameter of the sleeve is 7.5mm, the inner diameter of the sleeve is 6.5mm, the tail end is provided with a T-shaped handle, the axial direction of the short handle (1) is consistent with the direction of the obliquely-opened opening at the head end, and the axial direction of the long handle (3) is consistent with the back side of the obliquely-opened opening at the head end.

3. A working cannula according to claim 1 or 2, characterized in that the beveled opening at the head end is 15mm long, the edge of the opening at both sides is blunt with 3mm of remaining tip, and the remaining beveled opening is double-edged.