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Multifunctional internal fixation tool for spine

A fixed tool, multi-functional technology, applied in the field of medical devices, can solve problems such as increasing the burden on doctors and increasing errors

Active Publication Date: 2019-10-22
SHANGHAI REACH MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the operation, the doctor needs to use supporting tools when installing the pedicle screw and the round rod, and after the installation is completed, a breaker is needed to break the blade of the screw cap. During the operation, the doctor will drive multiple vertebrae into the patient's body. For pedicle screws, frequent tool replacement increases the burden on doctors on the one hand, and on the other hand increases the risk of mistakes. There are improvements in the existing technology

Method used

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  • Multifunctional internal fixation tool for spine
  • Multifunctional internal fixation tool for spine
  • Multifunctional internal fixation tool for spine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] like figure 2 and image 3 As shown, a multifunctional spinal internal fixation tool includes a handle part, one end of the handle part is provided with a fixing hole for matching a round rod, and the other end is provided with an adapter head for matching a pedicle screw; combined with Figure 4 As shown, the fixing hole has a regular hexagonal structure corresponding to the regular hexagonal end of the round rod, and an elastic groove is provided on one of the side lines, and an elastic abutment block that abuts the round rod is arranged in the elastic groove. In order to increase the length of the elastic groove, the elastic groove in this solution extends along the length direction of the handle part toward the side of the adapter head, and the elastic abutment block extends along the length direction of the handle part; Figure 5 As shown, the adapter includes a socket part, and a waist-shaped groove is opened on the socket part. When in use, the user inserts the...

Embodiment 2

[0055] like Figure 7 As shown, the difference between Embodiment 2 and Embodiment 1 is that in this solution, the elastic abutting block extends along a direction perpendicular to the length of the handle portion.

[0056] The elastic abutting block extending along the length direction of the handle portion will deform perpendicular to its own length direction due to the repeated entry of the round rod into the fixing hole, and is prone to breakage; the elastic abutting block extending perpendicular to the length direction of the handle portion, Longer service life.

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PUM

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Abstract

The invention relates to a multifunctional internal fixation tool for the spine. The tool comprises a handle part, wherein one end of the handle part is provided with a fixing hole used for being matched with a round rod, and the other end of the handle part is provided with an adapting head used for being matched with a pedicle screw; the fixing hole is of a regular hexagonal structure, and an elastic groove is formed in one side line of the fixing hole. The adapting head comprises an insertion connection part, wherein a square groove and a waist-shaped groove which run through the insertionconnection part are formed in the insertion connection part; the square groove is provided with an arc-shaped bulge; the kidney-shaped groove is formed in the arc-shaped bulge, the fixing hole formedin the handle part is used for holding and disassembling the round rod, and meanwhile, the round rod can be rotated to adjust the position. The insertion connection part can be inserted into the pedicle screw, and the arc-shaped bulge is matched with a screw cap of the pedicle screw, so that better positioning is realized; the multifunctional internal fixation tool for the spine and the pedicle screw are twisted together around an axis, so that the direction of the pedicle screw is conveniently adjusted. After surgery, screw caps are separately inserted into the square groove for breaking treatment; the internal fixation tool for the spine can reduce the configuration number of surgical tools, facilitate the surgical operation and reduce the cost.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a multifunctional spinal internal fixation tool. Background technique [0002] With the development of spinal internal fixation surgery, the use of spinal rod fixation system for reduction and correction of spinal injuries and spinal diseases has become more and more widely used. [0003] In medical operations, when pre-tightening and finally tightening the screws, it is generally necessary to cooperate with a breaker to lock; in addition, for the situation that the tail cap of the pedicle screw is too long during the operation, which affects the operation, and the tail cap protrudes from the skin after the operation , needs to cooperate with the break relaxer, such as figure 1 As shown, a pedicle screw includes a nail body and a nail cap. The nail cap is provided with a nail cap blade and a U-shaped groove formed between the two nail cap blades. The nail cap is prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/70A61B17/88
CPCA61B17/70A61B17/88
Inventor 赵岩黄孝敏
Owner SHANGHAI REACH MEDICAL INSTR