CN102068295A

CN102068295A - Angular annular bone knife

Info

Publication number: CN102068295A
Application number: CN 201110022848
Authority: CN
Inventors: 徐兆万; 门阔业; 李鹏; 李健
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-20
Filing date: 2011-01-20
Publication date: 2011-05-25
Anticipated expiration: 2031-01-20
Also published as: CN102068295B

Abstract

The invention discloses an angular annular bone knife. The angular annular bone knife comprises a handle, wherein the front end of the handle is connected with a pipe-shaped cutting head with a smooth surface; the front part of the cutting head is slantways arranged and an acute included angle A between the front part of the cutting head and the axis of the handle is formed; a cutting edge is circumferentially formed at the front end of the cutting head; the cutting head is also provided with an object taking opening communicated with an inner chamber of the cutting head; a plane of the edge is perpendicular to the axis of the handle; the section of the cutting head is circular; and the circular object taking opening is formed on the surface of the cutting head opposite to the inclination direction of the cutting head. The intervertebral disc protrusion can be cut once by the annular bone knife, so that repetitive operation and repetitive traction of nerve roots are reduced, the risk of the injury of the nerve roots is lowered, an operation mode of blunt tearing is changed, protruded intervertebral discs can be conveniently taken out with a nucleus pulposus clamp, the stress applied to the nucleus pulposus clamp is reduced, the labor intensity of medical staff are also greatly reduced, and the quality of the operation is improved.

Description

A kind of angle annular osteotome

Technical field

The present invention relates to a kind of angle annular osteotome.

Background technology

Carrying out intervertebral disk hernia when operation at present, earlier with scalpel or osteotome at outstanding position otch, reuse vertebral pulp pincers carry out the passivity tearing, extract and give prominence to intercalated disc and intervertebral vertebral pulp.There is following shortcoming in this modus operandi: 1. when scalpel or osteotome carry out otch, have potential safety hazard, repeatable operation easy damaged nerve root or dura mater have increased operation risk; 2. be difficult to carry out otch for calcification type intervertebral disk hernia with scalpel; 3. when extracing outstanding intercalated disc and intervertebral vertebral pulp owing to the vertebral pulp pincers is the passivity tearing, has increased the stressed of vertebral pulp pincers, the damage that causes vertebral pulp to clamp easily, and the fragment after it damages is difficult to take out after entering intervertebral space, has also increased operation risk.

Summary of the invention

The technical problem to be solved in the present invention provide a kind of can be to the outstanding angle annular osteotome that carries out the cutting of sharp property and reduce operation risk of intercalated disc.

For solving the problems of the technologies described above, the angle annular osteotome that is provided comprises handle, its construction features is: the front end of handle is connected with in a tubular form and ganoid cutter head, the cutter head front portion be obliquely installed and and handle axis between included angle A be acute angle, the front end border of cutter head is equipped with cutting edge, also be provided with on the cutter head be communicated with its inner chamber get the thing mouth.

The axis normal of residing plane of described cutting edge and handle.

The cross section of cutter head is rounded, gets the thing mouth also for circular.

The described thing mouth of getting is arranged on the cutter head surface opposite with the cutter head incline direction.

The posterior face of the cutter head opposite with the cutter head incline direction is a flat face, and the described thing mouth of getting is arranged on this flat face.

The scope of described included angle A is 25 °-40 °.

After adopting said structure, when carrying out the intervertebral disk hernia operation, should place outstanding intervertebral disc surface by annular osteotome front end, cutting edge is aimed at the intercalated disc diseased region, make cutting edge cut excision by the hammering handle, use the vertebral pulp pincers to take out the intercalated disc that cuts away by getting the thing mouth to intercalated disc.When carrying out this operation, spinal cord is positioned on the slick cutter head surface, when surgical staff firmly cuts, can under the situation of not push-and-pull dura mater outstanding intercalated disc be cut; This annular osteotome can disposablely be finished for the intervertebral disk hernia opening, has reduced repeatable operation, has reduced the tractive repeatedly to nerve root, has reduced the risk of nerve root injury.Owing to adopted the sharp property cutting of cutting edge to outstanding intercalated disc, changed the modus operandi that passivity is torn, made things convenient for the vertebral pulp pincers to take out outstanding intercalated disc, reduced the stressed of vertebral pulp pincers, also greatly reduce medical personnel's labor intensity, improved the operation quality.

Description of drawings

The present invention is further illustrated below in conjunction with accompanying drawing:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is along the cutaway view of B-B line among Fig. 1;

Sketch map when Fig. 4 carries out the intervertebral disk hernia operation for using the present invention;

Sketch map when Fig. 5 carries out the vertebral fracture operation for using the present invention;

Sketch map when Fig. 6 excises thoracic vertebra pipe rear outthrust for using the present invention.

The specific embodiment

Angle annular osteotome as depicted in figs. 1 and 2, it comprises handle 1, describe for convenient, with the below in scheming is front end, the front end of handle 1 is connected with cutter head 2, part among Fig. 1 in the frame of broken lines is a cutter head 2, in conjunction with Fig. 1 and shown in Figure 3, cutter head 2 cylindrical and smooth surfaces, the connecting portion of cutter head 2 rear ends and handle 1 is the rounding off section, cutter head 2 front portions be obliquely installed and and handle 1 axis between included angle A be acute angle, the scope of included angle A is 25 °-40 °, best angle is 30 °, and cutter head 2 front end borders are equipped with cutting edge 3, the axis normal of cutting edge 3 residing planes and handle 1.The inner chamber of tubulose cutter head 2 is the storage chamber, cutter head 2 be provided be communicated with the storage chamber get thing mouth 4, the posterior face of the cutter head 2 opposite with cutter head 2 incline directions is a flat face, this flat face is parallel with the axis of handle 1, help stretching into the vertebral pulp clamp and get the intercalated disc fragment, the above-mentioned thing mouth 4 of getting is arranged on this flat face.

As shown in Figure 4; when carrying out the intervertebral disk hernia operation; cutting edge 3 is aimed at intercalated disc diseased region 5; make 3 pairs of intercalated disc of cutting edge cut excision by the hammering handle; spinal cord 6 can be positioned on the slick front surface 21, and nerve root 7 can be positioned at below, slick inclined plane, drags back and forth and uses this annular osteotome can not damage die or nerve root; intercalated disc after being cut can get final product its taking-up by getting thing mouth 4 with the vertebral pulp pincers then at the storage intracavity.The present invention is particularly suitable for the operation of calcification type intervertebral disk hernia.

The present invention can also be used to doing following operation: as shown in Figure 5, when carrying out the vertebral fracture operation, existing processing method to the bone piece of charging into canalis spinalis is to use L shaped beating device that outstanding fracture site 8 is rushed in, to avoid its compressing spinal cord 6, because the sclerite below has other osseous tissue or soft tissue to embed, so sclerite is difficult to reset when hitting with L shaped beating device, and uses this annular osteotome can excise outstanding vertebral fracture position 8, thereby effectively reduces pressure.As shown in Figure 6, the present invention can also be used to excising thoracic vertebra pipe rear outthrust, is about to the present invention and inserts along spinal cord 6 sides, and the outthrust 9 of excision thoracic vertebra pipe rear compressing spinal cord has solved the situation that can not directly handle thoracic vertebra pipe rear outthrust in the existing operation.

Claims

1. angle annular osteotome, comprise handle (1), it is characterized in that: the front end of handle (1) is connected with in a tubular form and ganoid cutter head (2), cutter head (2) front portion be obliquely installed and and handle (1) axis between included angle A be acute angle, the front end border of cutter head (2) is equipped with cutting edge (3), also be provided with on the cutter head (2) be communicated with its inner chamber get thing mouth (4).

2. angle annular osteotome according to claim 1 is characterized in that: the axis normal of residing plane of described cutting edge (3) and handle (1).

3. angle annular osteotome according to claim 1, it is characterized in that: the cross section of described cutter head (2) is rounded, gets thing mouth (4) also for circular.

4. angle annular osteotome according to claim 1, it is characterized in that: the described thing mouth (4) of getting is arranged on cutter head (2) surface opposite with cutter head (2) incline direction.

5. angle annular osteotome according to claim 4, it is characterized in that: the posterior face of the cutter head (2) opposite with cutter head (2) incline direction is a flat face, the described thing mouth (4) of getting is arranged on this flat face.

6. according to each described angle annular osteotome among the claim 1-5, it is characterized in that: the scope of described included angle A is 25 °-40 °.