CN2226441Y

CN2226441Y - Hollow chisel for operation of prolapse of lumbar intervertebral disc

Info

Publication number: CN2226441Y
Application number: CN 94242604
Authority: CN
Inventors: 李新忠
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-23
Filing date: 1994-09-23
Publication date: 1996-05-08
Anticipated expiration: 2004-09-23

Abstract

The utility model relates to a hollow chisel for the operation of the prolapse of lumbar intervertebral disc, comprising one chisel head provided with a cutting edge. The geometric shape of the chisel head is a hollow cylinder, and the cutting edge is positioned on the front end of the hollow cylinder and is in closed shape. A plane where the cutting edge is positioned is perpendicular to the side face of the hollow cylinder, and the side face of the hollow cylinder is also provided with a bar-shaped window. The hollow chisel for the operation of prolapse of lumbar intervertebral disc provides a safe, convenient and special tool for different narrowness gaps and different protruding forms and protruding pulpiform nucleuses after the degeneration of the intervertebral disc and the fenestration operation of the ossification of a fibre ring.

Description

The hernia of lumbar intervertebral disk hollow chisel

This utility model belongs to the surgical operation osteotome, relates to a kind of hernia of lumbar intervertebral disk hollow chisel.

The operative treatment of prolapse of lumbar intervertebral disc is extensively carried out clinical.But in its operation technique, still prolong and using cutter to cut, sting out and the habitual practice such as clamp, therefore exist blindness and danger, especially, more can increase the difficulty of operation with symptom such as ossified, that regression is narrow.For example, when the ossified and narrow gaps of outstanding vertebral pulp or fibrous ring occurring when obvious, the method with "T"-shaped, "+" shape or " O " shape are usually cut does not often prove effective, have to select to substitute apparatus, so just might damage the spinal dura mater nerve root because of inconvenient operation.

The purpose of this utility model is to propose a kind of special-purpose osteotome, with this weak point that overcomes above-mentioned existing operative treatment means, makes operation technique safety and convenient more, and reduces the generation of contingency.

The technical solution of the utility model is to construct a kind of like this hernia of lumbar intervertebral disk hollow chisel, even it has the cutter head of a band cutting edge, the geometry of this cutter head is a hollow cylinder, described cutting edge is positioned at the front end of this hollow cylinder and is enclosed shape, the side of this plane, cutting edge place and this hollow cylinder is perpendicular, also has marking shape window in the side of this hollow cylinder.

Advantage of the present utility model is with good effect: it can be applicable to the different close clearances behind the intervertebral disc degeneration, different outstanding forms and outstanding vertebral pulp fully, and the fenestration operation under the situation such as fiber is ossified, for the operative treatment of prolapse of lumbar intervertebral disc provides safe, quick and effective specific purpose tool.

Accompanying drawing of the present utility model has 12 width of cloth, wherein:

Fig. 1 is a kind of hollow gouge schematic perspective view of the present utility model;

Fig. 2 is the right view of Fig. 1 hollow core gouge cutter 1;

Fig. 3 is the front view of Fig. 1 hollow core gouge cutter 1;

Fig. 4 is the vertical view of Fig. 1 hollow core gouge cutter 1;

Fig. 5 is a kind of hollow ellipse cutter schematic perspective view of the present utility model;

Fig. 6 is the right view of oval true 4 of Fig. 5 hollow core;

Fig. 7 is the front view of oval true 4 of Fig. 5 hollow core;

Fig. 8 is the vertical view of oval true 4 of Fig. 5 hollow core;

Fig. 9 is a kind of hollow rectangular cutter schematic perspective view of the present utility model;

Figure 10 is rectangular true 7 right view of Fig. 9 hollow core;

Figure 11 is rectangular true 7 front view of Fig. 9 hollow core;

Figure 12 is rectangular true 7 vertical view of Fig. 9 hollow core.

Above-mentioned accompanying drawing shows three specific embodiments of this utility model:

Embodiment 1, and as Fig. 1～shown in Figure 4, it is to connect the cutter 1 that a shape is hollow cylinder on the handle bar, has closed circle cutting edge 2 in the end of cutter 1, and the side at this cutter 1 has marking shape window 3.

Embodiment 2, and as Fig. 5～shown in Figure 8, it is to connect the cutter 4 that a shape is the hollow ellipse cylinder on the handle bar, and the end at cutter 4 has occluded ellipse shape cutting edge 5, and the side at this cutter 4 has marking shape window 6.

Embodiment 3, and as Fig. 9～shown in Figure 12, it is to connect the cutter 7 that a shape is hollow rectangular cylinder on the handle bar, in the end of cutter 7, have the rectangle cutting edge 8 of sealing, and the side at this cutter 7 has marking shape window 9.

Claims

1, a kind of hernia of lumbar intervertebral disk hollow chisel, it is characterized in that: it has the cutter head of a band cutting edge, the geometry of this cutter head is a hollow cylinder, described cutting edge is positioned at the front end of this hollow cylinder and is enclosed shape, the side of this plane, cutting edge place and this hollow cylinder is perpendicular, also has marking shape window in the side of this hollow cylinder.

2, hernia of lumbar intervertebral disk hollow chisel according to claim 1 is characterized in that; Described hollow cylinder is a hollow cylinder.

3, hernia of lumbar intervertebral disk hollow chisel according to claim 1 is characterized in that: described hollow cylinder is a hollow ellipse cylinder.

4, hernia of lumbar intervertebral disk hollow chisel according to claim 1 is characterized in that: described hollow cylinder is a hollow four prisms cylinder.