CN201958955U - Quadrangular bone knife - Google Patents

Abstract

The utility model relates to a quadrangular bone knife. The quadrangular bone knife is composed of a bone knife, a connecting rod and a handle which are connected in sequence; the bone knife is in the shape of a hollow square, an opening is formed at the front end of the bone knife, and the tail end of the bone knife is closed; inner edges are formed on the periphery of the front end of the bone knife; a side opening is formed on one side surface of the bone knife, and the side opening are communicated with the opening at the front end of the bone knife; a hollow pipe penetrates the middle of the entire body of the quadrangular bone knife; the front end of the hollow pipe is communicated with the opening at the front end of the bone knife; and the rear end of the hollow pipe penetrate through the handle. The quadrangular bone knife has the advantages that the windowing and cut is orderly; the bone fragment residues cam be avoided; the quadrangular bone knife can be used for positioning and guiding and has high security; and the range of vision of an operator can not be obstructed.

Description

A kind of four rib osteotomes

Technical field

This utility model belongs to the bone surgery set technical field, particularly relates to a kind of osteotome for orthopaedics intervertebral disc prolapse operation use.

Background technology

Prolapse of lumbar intervertebral disc mainly be since human intervertebral disc because of age growth or strained and the effect of external force, cause fibrous ring to be broken, vertebral pulp is outstanding or deviate from from rent, compressing lumbar nerve roots or cauda equina nerve and a series of nervous symptoms such as the lumbago and skelalgia that occurs, numbness.Critically ill patient generally need carry out the lumbar nucleus pulposus excising operation; carry out vertebral lamina fenestration or full vertebrae plate resection to appearing the vertebral plate articular process; appear dural sac, nerve root, inwardly retract and the neuroprotective root, appear the pathological interspinal crack and the intercalated disc tissue is extractd with the nerve root hook.

But traditional vertebral lamina fenestration mode can only use the angle cutter in single face osteotome and the related surgical apparatus to make crucial incision or circular resection on intervertebral disc.Such operation often causes otch irregular, leaves over GUSUIPIAN easily, influences post-operative recovery; And this operation do not have the positioning and guiding effect, damage terminal plate of vertebral body and vertebral body cortex easily in the operating process, and surgical risk is big.

Summary of the invention

The purpose of this utility model provides a kind of four rib osteotomes, solve to use the traditional operation apparatus carry out the lumbar nucleus pulposus enucleation when windowing otch irregular, damage the problem of terminal plate of vertebral body and vertebral body cortex easily, improve operation safety.

For addressing the above problem, the four rib osteotomes that this utility model provides are connected to form successively by osteotome, connecting rod and handle, and described osteotome is the hollow square shape, its front opening, endcapped; Have inner edge around the front end of osteotome; Be provided with side opening on a side of osteotome, described side opening is the diagonal trend, with the open communication of osteotome front end.

Further, be penetrated with a hollow pipeline in the entire body center of four rib osteotomes, the front end of described hollow pipeline is communicated with the osteotome front opening, rear end pass-out handle.

Preferably, the diameter of described hollow pipeline is 2mm.

The Front-end Design of this utility model four rib osteotomes becomes the hollow square shape, and it is equipped with inner edge on four sides, can be carefully and neatly done during use on vertebral body, leave the square tunnel; Simultaneously, the side opening of four rib osteotomes is the diagonal trend and is communicated with the osteotome front opening, has made things convenient for the taking-up that cuts thing in the osteotome; Moreover, be penetrated with hollow pipeline in the center of four rib osteotomes, can in hollow pipeline, intert and be with graduated guide pin into one, when operation, position guiding, improved the safety of operation to a great extent.

Use four rib osteotomes of the present utility model to implement the lumbar nucleus pulposus enucleation, have the otch of windowing neat, avoid residual GUSUIPIAN, can positioning and guiding advantage, and do not stop the patient visual field, improved the safety of lumbar nucleus pulposus enucleation.

Description of drawings

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

Fig. 2 is a partial enlarged drawing of the present utility model.

The specific embodiment

The structure of four rib osteotomes as shown in Figure 1 and Figure 2, connect to form successively by osteotome 1, connectingrod 2 andhandle 3, osteotome 1 is the hollow square shape, its front opening, endcapped, have inner edge 4 around the front end of osteotome, a side at osteotome is provided withside opening 5, andside opening 5 is the diagonal trend and is communicated withosteotome front opening 6, is penetrated with thehollow pipeline 7 of a diameter 2MM in the entire body center of four rib osteotomes, the front end ofhollow pipeline 7 is communicated withosteotome front opening 6, rear end pass-outhandle 3.

During use; systemic vein anesthesia, ventricumbent position, median incision behind the back; successively cut; appear the vertebral plate articular process, select row vertebral lamina fenestration or full vertebrae plate resection, appear dural sac according to different cases; nerve root; inwardly retract and the neuroprotective root with the nerve root hook; appear pathological interspinal crack and intercalated disc tissue, will be with graduated guide pin to insert in the intervertebral disc, the degree of depth is 2cm; there is not the sclerotin sense all around; be inserted in four rib osteotomes along guide pin then,, determine to be positioned at dural sac and the nerve root outside to the fibrous ring surface; along guide pin direction bell hitter handle tail end; osteotome is promptly left a square tunnel on fibrous ring, withdraw from osteotome and guide pin, thoroughly extracts the intercalated disc tissue with the vertebral pulp pincers.

Claims (4)

1. a rib osteotome is connected to form successively by osteotome, connecting rod and handle, it is characterized in that: described osteotome is the hollow square shape, its front opening, endcapped; Have inner edge around the front end of osteotome; On a side of osteotome, be provided with side opening, and the open communication of described side opening and osteotome front end.

2. four rib osteotomes according to claim 1 is characterized in that: described side opening is the diagonal trend and is communicated with the osteotome front opening.

3. four rib osteotomes according to claim 1 is characterized in that: the entire body center at four rib osteotomes is penetrated with a hollow pipeline, and the front end of described hollow pipeline is communicated with the osteotome front opening, rear end pass-out handle.

4. four sides according to claim 3 osteotome is characterized in that: the diameter of described hollow pipeline is 2mm.

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