CN203417278U

CN203417278U - Interbody fusion instrument

Info

Publication number: CN203417278U
Application number: CN201320419826.2U
Authority: CN
Inventors: 钱建清
Original assignee: JIANGSU SHUANGYANG MEDICAL DEVICES CO Ltd
Current assignee: JIANGSU SHUANGYANG MEDICAL DEVICES CO Ltd
Priority date: 2013-07-16
Filing date: 2013-07-16
Publication date: 2014-02-05
Anticipated expiration: 2023-07-16

Abstract

The utility model discloses an interbody fusion instrument comprising an interbody fusion instrument body. The upper surface and the lower surface of the interbody fusion instrument body incline inwards and gradually from front to back. At least two sets of interbody fusion locking holes are formed in the interbody fusion instrument body. Each set of interbody fusion locking holes is composed of two locking screw holes which can penetrate through the interbody fusion instrument body. The inlet end and the outlet end of one locking screw hole in each set of interbody fusion locking holes are arranged on the front side face and the upper surface of the interbody fusion instrument body respectively; the inlet end and the outlet end of the other locking screw hole are arranged on the front side face and the lower surface of the interbody fusion instrument body respectively. The included angle between the axis line of each locking screw hole and the horizontal section of the interbody fusion instrument body is 37-43 degrees; the included angle between the axis line of each locking screw hole and the vertical section of the interbody fusion instrument body is 2-3 degrees. The interbody fusion instrument has the advantages that operation is easy and convenient, no incision mark exists, and people will not have a foreign body sensation after an operation.

Description

Invasive lumbar fusion device

Technical field

This utility model relates to medical instruments field, is specifically related to the Invasive lumbar fusion device merging for spinal vertebral.

Background technology

When the intervertebral disc generation pathological changes of vertebra or when downright bad, just need to carry out vertebral fusion operation, traditional operation plan is: the Intervertebral disk displacement of pathological changes is removed, then at the intervertebral disc position being removed, put into the Invasive lumbar fusion device consistent with intervertebral disc shape.The structure of the Invasive lumbar fusion device using at present comprises Invasive lumbar fusion device body.The shortcoming of this Invasive lumbar fusion device is: the hold of Invasive lumbar fusion device and adjacent vertebrae piece is low, poor stability, thereby need to be sidelong and put a block plate at one of Invasive lumbar fusion device, the two ends of steel plate fix by the screw vertebra piece adjacent with Invasive lumbar fusion device respectively.So not only perform the operation loaded down with trivial details, particularly when the intervertebral disc of human cervical spine need to be used above-mentioned Invasive lumbar fusion device, owing to having esophagus, trachea before cervical vertebra, at anterior cervical vertebrae, place after the steel plate higher than cervical vertebra surface, not only bad for human body blood, transport, descendant's the foreign body sensation of making to perform the operation is strong, has also increased the incidence rate of the postoperative generation dysphagias of people.

Utility model content

The purpose of this utility model is to provide the Invasive lumbar fusion device of a kind of zero incisura,, good stability high with the hold of vertebra.

For achieving the above object, this utility model has adopted following technical scheme: described Invasive lumbar fusion device, comprise Invasive lumbar fusion device body, Invasive lumbar fusion device body upper, lower surface is respectively by the setting that slopes inwardly gradually after forward direction, on Invasive lumbar fusion device body, at least offer two groups of intervertebral fusion lock holes, every group of intervertebral fusion lock hole is comprised of two screw hole that can connect Invasive lumbar fusion device body, the entrance point of one of them screw hole in every group of intervertebral fusion lock hole and the port of export are separately positioned on leading flank and the upper surface of Invasive lumbar fusion device body, the entrance point of another screw hole and the port of export are separately positioned on leading flank and the lower surface of Invasive lumbar fusion device body, and guarantee that the angular range between the axial line of each screw hole and the horizontal cross-section of Invasive lumbar fusion device body is 37 °～43 °, angular range between the vertical cross-section of the axial line of each screw hole and Invasive lumbar fusion device body is 2 °～3 °.

Further, aforesaid Invasive lumbar fusion device, wherein: the angle between the axial line of each screw hole and the horizontal cross-section of Invasive lumbar fusion device body is 40 °, the angle between each screw hole and the vertical cross-section of Invasive lumbar fusion device body is 2.5 °.

Further, aforesaid Invasive lumbar fusion device, wherein: on the upper surface of Invasive lumbar fusion device body and lower surface, be evenly distributed with respectively some teeth.

By the enforcement of technique scheme; the beneficial effects of the utility model are: and the hold between vertebra is high; and only screw conventional in operation on vertebra need be tightened along the direction of entering to follow closely of screw hole; just can Invasive lumbar fusion device is mutually firm with adjacent vertebrae piece; and screw can embed in Invasive lumbar fusion device body completely; not only easy to operate; and realized zero incisura; after being performed the operation, people can not produce foreign body sensation; reduce the probability of the postoperative generation dysphagias of people, protected human body blood fortune.

Accompanying drawing explanation

Fig. 1 is the structural representation of Invasive lumbar fusion device described in the utility model.

Fig. 2 is the structural representation of overlooking direction of Fig. 1.

Fig. 3 is the structural representation of A-A section in Fig. 1.

Fig. 4 is the structural representation of B-B section in Fig. 1.

Fig. 5 is the perspective view of the Invasive lumbar fusion device shown in Fig. 1.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Fig. 5, described Invasive lumbar fusion device, comprise Invasive lumbar fusion device body 1, Invasive lumbar fusion device body 1 upper, lower surface is respectively by the setting that slopes inwardly gradually after forward direction, on Invasive lumbar fusion device body 1, at least offer two groups of intervertebral fusion lock holes, in the present embodiment, on Invasive lumbar fusion device body 1, offer two groups of intervertebral fusion lockings, every group of intervertebral fusion lock hole is comprised of upper screw hole and the lower screw hole that can connect Invasive lumbar fusion device body 1, two groups of intervertebral fusion lock holes comprise upper left screw hole 2, upper right screw hole 21, lower-left screw hole 3, bottom right screw hole 31, the wherein entrance point of upper left screw hole 2 and the port of export, and on the entrance point of upper right screw hole 21 and the port of export leading flank 4 that is separately positioned on Invasive lumbar fusion device body 1 and upper surface 5, the entrance point of lower-left screw hole 3 and the port of export, and on the entrance point of bottom right screw hole 31 and the port of export leading flank 4 that is separately positioned on Invasive lumbar fusion device body 1 and lower surface 6, and guarantee the axial line of upper left screw hole 2, and the angular range between the axial line of upper right screw hole 21 and the horizontal cross-section of Invasive lumbar fusion device body 1 is 37 °～43 °, the axial line of lower-left screw hole 3, and the angular range between the axial line of bottom right screw hole 31 and the horizontal cross-section of Invasive lumbar fusion device body 1 is 37 °～43 °, angle between the vertical cross-section of the axial line of the axial line of upper left screw hole 2 and upper right screw hole 21 and Invasive lumbar fusion device body 1 is 2 °～3 °, angle between the vertical cross-section of the axial line of the axial line of lower-left screw hole 3 and bottom right screw hole 31 and Invasive lumbar fusion device body 1 is 2 °～3 °, can prevent that like this screw from punching corresponding vertebra piece in the process of tightening, improve device security and stability.In the present embodiment, the axial line of upper left screw hole 2, and the angle between the axial line of upper right screw hole 21 and the horizontal cross-section of Invasive lumbar fusion device body 1 is 40 °, the axial line of lower-left screw hole 3, and the angle between the axial line of bottom right screw hole 31 and the horizontal cross-section of Invasive lumbar fusion device body 1 is 40 °, and the axial line of upper left screw hole 2, and the angle between the axial line of upper right screw hole 21 and the vertical cross-section of Invasive lumbar fusion device body 1 is 2.5 °, the axial line of lower-left screw hole 3, and the angle between the axial line of bottom right screw hole 31 and the vertical cross-section of Invasive lumbar fusion device body 1 is 2.5 °, make like this screw can hold better two vertebra pieces up and down that Invasive lumbar fusion device is adjacent, increased hold, improved stabilization of equipment performance.In the present embodiment, on the upper surface 5 of Invasive lumbar fusion device body 1 and lower surface 6, be evenly distributed with respectively some teeth 7, can make like this Invasive lumbar fusion device body 1 can embed better adjacent two vertebra pieces up and down, improved hold, improved stability.In actual operation application, only need be by screw conventional in operation on vertebra along upper left screw hole 2, upper right screw hole 21, lower-left screw hole 3, the direction of entering to follow closely of bottom right screw hole 31 is tightened, just can fix substituting the Invasive lumbar fusion device of downright bad intervertebral disc and adjacent two vertebra pieces up and down, do not need with steel plate, to carry out firmly again, simplified operation process, improved operation efficiency, shortened operating time, and the screw after tightening can be embedded in Invasive lumbar fusion device completely, thereby realized the zero incisura of Invasive lumbar fusion device, after being performed the operation, people can not produce foreign body sensation, also reduced the probability of the postoperative generation dysphagias of people.

Claims

1. Invasive lumbar fusion device, it is characterized in that: comprise Invasive lumbar fusion device body, Invasive lumbar fusion device body upper, lower surface is respectively by the setting that slopes inwardly gradually after forward direction, on Invasive lumbar fusion device body, at least offer two groups of intervertebral fusion lock holes, every group of intervertebral fusion lock hole is comprised of two screw hole that can connect Invasive lumbar fusion device body, the entrance point of one of them screw hole in every group of intervertebral fusion lock hole and the port of export are separately positioned on leading flank and the upper surface of Invasive lumbar fusion device body, the entrance point of another screw hole and the port of export are separately positioned on leading flank and the lower surface of Invasive lumbar fusion device body, and guarantee that the angular range between the axial line of each screw hole and the horizontal cross-section of Invasive lumbar fusion device body is 37 °～43 °, angular range between the vertical cross-section of the axial line of each screw hole and Invasive lumbar fusion device body is 2 °～3 °.

2. Invasive lumbar fusion device according to claim 1, it is characterized in that: the angle between the axial line of each screw hole and the horizontal cross-section of Invasive lumbar fusion device body is 40 °, the angle between each screw hole and the vertical cross-section of Invasive lumbar fusion device body is 2.5 °.

3. Invasive lumbar fusion device according to claim 1 and 2, is characterized in that: on the upper surface of Invasive lumbar fusion device body and lower surface, be evenly distributed with respectively some teeth.