CN2176731Y

CN2176731Y - Water-through type intervertebral disc cutting and scution device

Info

Publication number: CN2176731Y
Application number: CN 93229029
Authority: CN
Inventors: 边杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-16
Filing date: 1993-08-16
Publication date: 1994-09-14
Anticipated expiration: 2003-08-16

Abstract

The utility model relates to a water-through type intervertebral disk cutting and suction device, and particularly an improvement of an intervertebral disk cutting structure. The utility model can cause that cut intercalated disk tissue block can be discharged out of the human body freely through that the cutting suction device is continuously injected with water. The utility model comprises an outer sleeve pipe, an inner sleeve pipe, a clearance groove, a cutting knife and an inner cavity. A water inlet channel is arranged between the outer sleeve pipe and the inner sleeve pipe and is connected with a valve arranged on the outer sleeve pipe. The utility model has the characteristics of short cutting time, cutting quantity increase and the chance of postoperative infection reduction.

Description

Water-through type intervertebral disc cutting and scution device

This utility model relates to the improvement of intervertebral disc sickle structure.This apparatus mainly is by water filling in cutting and suction device continuously, and the broken intercalated disc piece of tissue of cutting is discharged from outside the human body at any time.

Before this utility model, the every cutting one interblock dish tissue of intervertebral disc sickle will take out sickle, be placed in the normal saline and aspirate once, flush out with this way and organize fragment, therefore, finishing operation often needs to repeat above-mentioned action tens of times, approximately spends half-hour period; Sometimes more organize for the ease of once resecting, must water filling in intercalated disc, soften vertebral pulp, even like this, the tissue mass of excision is also often on the low side, and influences therapeutic effect.In addition, sickle repeatedly takes out in the intercalated disc repeatedly and organizes fragment, has increased opportunities for contamination, and the probability that the postoperative intercalated disc infects also increases thereupon.

The purpose of this utility model is exactly at the problems referred to above, and a kind of efficient, safe intervertebral disc cutting and suction device tool is provided.

The purpose of this utility model is to realize like this, this utility model comprises trocar sheath, inner sleeve, undercut, cutting knife, inner chamber, between trocar sheath and inner sleeve intake tunnel is set exactly, intake tunnel is connected with the valve on the trocar sheath, realizes above-mentioned purpose of the present utility model with this.

Major advantage of the present utility model:

1. clipping time is short: this cutting and suction device is inserted does not need to take out repeatedly the water flushing in the intercalated disc, organize fragment but flush out by continuous water filling, therefore shortened operation time greatly, facts have proved, this apparatus just can be cut in 5-10 minute and suck an intercalated disc fragment, raised the efficiency more than 3 times than similar sickle;

2. excision amount increases: this cutting and suction device injects normal saline, can soften intercalated disc inner tissue continuously, is beneficial to the more vertebral pulp of excision.Experiment shows, the excision amount of this cutting and suction device is the 2-3.5 gram, increases nearly 1 times than the excision amount of similar sickle.

3. reduced the chance of postoperative infection: the work of this cutting and suction device the time does not need repeated multiple times to be removed flushing, and normal saline is the drip mode to inject intake tunnel continuously, contact with outside air, so has reduced the intercalated disc infection chance.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the profile of the 1-1 of Fig. 1;

Fig. 3 is the profile of the 2-2 of Fig. 1;

Fig. 4 is the M partial sectional view of Fig. 1.

Below in conjunction with accompanying drawing concrete structure of the present utility model is described in further detail:

This utility model comprises trocar sheath 1, inner sleeve 3, undercut 6, cutting knife 9, inner chamber 8, between trocar sheath 1 and inner sleeve 3 intake tunnel 4 is set, and intake tunnel 4 is connected with the valve on the trocar sheath 12.

The outside at the inner sleeve 3 of intake tunnel 4 front ends can be groove 5, so neither hinders cutting knife 9 operate as normal, can make again water into smoothly the front end by intake tunnel 4 to the inner chamber 8 of inner sleeve 3.

When using this apparatus, at first valve 2 can be connected with drip, the inner chamber 8 of inner sleeve 3 links to each other with negative pressure device.Inner sleeve 3 is reciprocating in trocar sheath 1, normal saline just passes through valve 2, intake tunnel 4, enters in the inner chamber 8 behind inner sleeve 3 terminations, when normal saline during, just organize fragment to wash away it and external through the afterbody extraction of inner chamber 8 through undercut 6 positions.

Reciprocating inner sleeve 3 also can adopt Mechanical Driven, increases work efficiency with this.

Claims

1, channelling water intervertebral disc cutting and suction device comprises trocar sheath 1, inner sleeve 3, undercut 6, cutting knife 9, inner chamber 8, it is characterized in that between trocar sheath 1 and inner sleeve 3 intake tunnel 4 being set, and intake tunnel 4 is connected with the valve on the trocar sheath 12.

2, channelling water intervertebral disc cutting and suction device according to claim 1, the outside that it is characterized in that the inner sleeve 3 of intake tunnel 4 front ends is a groove 5.