CN218128651U

CN218128651U - Posterior centrum osteotome

Info

Publication number: CN218128651U
Application number: CN202220321310.3U
Authority: CN
Inventors: 白军军; 冯毅; 吕嘉; 王红红; 吕智; 李健; 杨王喆; 张琨
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-12-27
Anticipated expiration: 2032-02-17

Abstract

The utility model belongs to the technical field of orthopedics cuts bone instrument technique and specifically relates to a way of escape centrum osteotomy sword is equipped with cutter body, tool bit and handle, both ends are connected with handle and tool bit respectively around the cutter body, its characterized in that tool bit and cutter body be the angle of 6-20 degrees, the tool bit establish to be the hexagon structure for hollow flat cross-section, the front end of the tool bit of hexagon structure is equipped with the slope section of below rear side slope, the up end middle part of the tool bit of hexagon structure is equipped with front end open-ended bar hole, the front end of the lower terminal surface of the tool bit of hexagon structure be equipped with the cutting edge, cut the bone to the centrum through the cutting edge, have simple structure, non-slip performance good, reduce the risk of damage spinal cord, stabilize and cut the bone, avoid advantages such as bad complication.

Description

Posterior centrum osteotome

Technical Field

The utility model belongs to the technical field of orthopedics cuts bone instrument technique and specifically relates to a simple structure, non-slip property are good, reduce the risk of damage spinal cord, stabilize and cut the bone, avoid bad complication's way of escape centrum osteotome.

Background

As is well known, the surgery for spinal diseases such as spinal tumor, lateral bending, deformity, degeneration and the like is increasing along with the improvement of the diagnosis and treatment technology level of the medical diagnosis and treatment. In the posterior vertebral osteotomy of the traditional osteotome, serious complications of spinal cord injury such as spinal cord concussion, cerebrospinal fluid exposure, paralysis and the like caused by multiple times of strikes may occur, and the serious patient endangers the life safety of the patient. When the ventral side of the spinal cord of the vertebral body is removed, the vertebral body is difficult to be effectively removed due to the shielding of the dural sac. Repeated operation increases both the time and the risk of the operation, and brings unnecessary loss to the patient. .

Disclosure of Invention

The utility model aims at solving the deficiencies of the prior art, providing a simple structure, skid resistance can be good, reduce the risk of injury spinal cord, stabilize the osteotome, avoid the posterior centrum osteotome of bad complication.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a way of escape centrum osteotome, is equipped with cutter body, tool bit and handle, both ends are connected with handle and tool bit respectively around the cutter body, its characterized in that the tool bit be the angle of 6-20 degrees with the cutter body, the tool bit establish to be the hexagon structure for hollow flat cross-section, the front end of the tool bit of hexagon structure is equipped with the slope section of inclining towards the rear side of below, the up end middle part of the tool bit of hexagon structure is equipped with front end open-ended bar hole, the front end of the lower terminal surface of the tool bit of hexagon structure be equipped with the cutting edge, carry out the osteotomy to the centrum through the cutting edge.

The cutter body establish to the hollow flat hexagon structure with the integrative intercommunication of tool bit, be equipped with on the cutter body with the bar hole of tool bit intercommunication, be convenient for free sclerotin store.

The length of the preceding terminal surface of tool bit be 15mm, highly be 10mm, the width in bar hole is 5mm.

The cross-section of handle be polygonized structure, frictional force between increase and the operator hand.

The length difference between the upper end face front end of tool bit and the lower end face front end be 3-5mm, can avoid appearing sliding when the centrum osteotomy when using, play the antiskid effect, reduce the risk of haring the spinal cord.

The hexagon structure be right angled hexagon for two angles in bottom, increase the length of cutting the bone cutting edge, guarantee to cut the bone effect.

By adopting the above structure, the utility model, have simple structure, non-slip property good, reduce the risk of injuring the spinal cord, stably cut the bone, avoid advantages such as bad complication.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged perspective view of the cutter head of fig. 1.

Fig. 3 is a front end view of the cutter head of fig. 2.

Fig. 4 is a side view of the cutter head of fig. 2.

Detailed Description

The present invention is further described with reference to the accompanying drawings:

as shown in the attached drawings, the posterior centrum osteotome is provided with a cutter body 1, a cutter head 2 and a handle 3, wherein the front end and the rear end of the cutter body 1 are respectively connected with the handle 3 and the cutter head 2, and is characterized in that the cutter head 2 and the cutter body 1 form an angle of 6-20 degrees, and after the centrum osteotome is provided with a certain angle, a front dura mater sac can be avoided in the posterior centrum partial resection application, so that the dura mater and the spinal cord are prevented from being damaged; the design of different angles is the excision of conveniently carrying out the centrum from different angles, tool bit 2 establish to be the hexagon structure for hollow flat cross-section, the front end of tool bit 2 of hexagon structure is equipped with the slope section 4 of the slope of the rear side below of orientation, the up end middle part of tool bit 2 of hexagon structure is equipped with front end open-ended bar hole 5, the front end of the lower terminal surface of tool bit 2 of hexagon structure be equipped with the cutting edge, cut the bone through the cutting edge to the centrum.

Further, the cutter body 1 is designed to be a hollow flat hexagonal structure integrally communicated with the cutter head 2, and the cutter body 1 is provided with a strip-shaped hole 5 communicated with the cutter head 2, so that free bone can be stored conveniently.

Further, the length of the front end face of the cutter head 2 is 15mm, the height of the front end face of the cutter head is 10mm, and the width of the strip-shaped hole 5 is 5mm.

Furthermore, the cross section of the handle 3 is in a polygonal structure, so that the friction force between the handle and the hand of an operator is increased.

Furthermore, the length difference value between the front end of the upper end face and the front end of the lower end face of the cutter head 2 is 3-5mm, so that the sliding of the centrum osteotome in use can be avoided, the anti-sliding effect is achieved, and the risk of spinal cord injury is reduced.

Furthermore, the hexagonal structure is an axisymmetric hexagon with two right-angled corners at the bottom, so that the length of the osteotomy blade is increased, and the osteotomy effect is ensured.

The utility model discloses during the use, chest lumbar vertebrae way of escape cuts the vertebral plate in advance, upper and lower joint suddenly joint, behind the both sides pedicle of vertebral arch bony structure, show behind dural sac and the nerve root, hug closely the dural sac with centrum osteotome front edge, one hand is held tightly centrum osteotome handle of a knife, the hammering gets into in the vertebra, the centrum osteotome of going back is extracted, alright remove this centrum of excision, in the use, because tool bit 2 and cutter body 1 establish to hollow hexagon structure, also be equipped with bar hole 5 simultaneously, consequently, can accomodate free sclerotin, also be convenient for pass through bar hole 5 with free sclerotin and release simultaneously, bar hole 5's design, also can observe the lower terminal surface osteotomy position of tool bit 2 through bar hole 5, have the position of bigger field of vision observation spinal cord, the excision centrum on a wider scale simultaneously, the front end of tool bit 2 is equipped with slope section 4, can avoid appearing sliding when using the centrum osteotomy knife, play anti-skidding effect, reduce the risk of injury in the operation, reducible instrument use step of bringing, the tradition centrum complication of bone osteotomy, reduce the injury of traditional vertebra, the patient, the risk of injury, the simple and the risk of preventing the injury of spinal cord, the spinal cord is reduced, the patient, the risk of the injury of the spinal cord is reduced, the patient, the spinal cord injury of the patient, the spinal cord is reduced.

Claims

1. The posterior centrum osteotome is provided with a cutter body, a cutter head and a handle, wherein the front end and the rear end of the cutter body are respectively connected with the handle and the cutter head, the posterior centrum osteotome is characterized in that the cutter head and the cutter body are at an angle of 6-20 degrees, the cutter head is designed to be of a hexagonal structure with a hollow flat section, the front end of the cutter head of the hexagonal structure is provided with an inclined profile which inclines towards the rear side downwards, the middle part of the upper end surface of the cutter head of the hexagonal structure is provided with a strip-shaped hole with an opening at the front end, the front end of the lower end surface of the cutter head of the hexagonal structure is provided with a cutting edge, and the centrum is subjected to osteotomy through the cutting edge.

2. The posterior vertebral osteotome of claim 1, wherein said cutter body is configured as a hollow flat hexagonal structure integrally communicating with said cutter head, said cutter body having a strip shaped aperture communicating with said cutter head.

3. The posterior vertebral osteotome defined in claim 1 wherein the anterior face of the cutting head is 15mm in length, 10mm in height and 5mm in width.

4. The posterior osteotome defined in claim 1 wherein said handle is polygonal in cross-section.

5. The posterior osteotome defined in claim 1 wherein the difference in length between the anterior end of the superior end surface and the anterior end of the inferior end surface of said blade is 3-5mm.

6. The posterior osteotome defined in claim 1 wherein said hexagonal structure is an axisymmetric hexagon having right angles at its bottom two corners.