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Single screw type percutaneous zygopophysis pedicle screw internal fixation system

A pedicle screw and fixation system technology, applied in the field of medical devices, can solve problems such as poor effect, complicated accessories, and many special equipment

Inactive Publication Date: 2013-12-11
周跃 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the above-mentioned inventions have their own characteristics, they all have some defects, such as more complicated accessories, more special equipment, higher production costs, poor effect after product application, and cumbersome operation steps, etc.

Method used

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  • Single screw type percutaneous zygopophysis pedicle screw internal fixation system
  • Single screw type percutaneous zygopophysis pedicle screw internal fixation system
  • Single screw type percutaneous zygopophysis pedicle screw internal fixation system

Examples

Experimental program
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Effect test

Embodiment Construction

[0023] Such as Figure 1 to Figure 4 As shown, the single-screw percutaneous facet facet pedicle screw internal fixation system of the present invention includes a positioning sheath for determining the angle of screw placement and the position of the body surface, a corresponding inner core, and a guide pin for determining the depth of screw placement , Soft tissue dilators, tapping rods, medical hollow drills and drilling tools for drilling bones, nail setters and pedicle screws for expanding the channel for placing screws on the body surface;

[0024] Wherein the soft tissue expander includes a first long tube and a second middle tube sleeved outside the first long tube, the second middle tube is positioned on the first long tube through a locking pin; The expander rests on the fan-shaped leaf on the body surface, which is formed by sliding fit of several fan-shaped units; if each fan-shaped unit is provided with a chute on the upper side, and a corresponding slider is prov...

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Abstract

The invention discloses a lumbar vertebral arch internal fixed bolt used for orthopedic surgery of a hospital and an application device of the bolt. A single bolt type percutaneous zygopophysis pedicle bolt internal fixation system comprises a locating sheathing canal and a corresponding inner core, a guide pin for determining the bolt depth, a soft tissue expander for expanding a bolt placement channel of the body surface, a tapping rod piece, a medical hollow drill and a drilling tool for drilling a bone, a bolt installing device and a vertebral pedicle bolt. The vertebral pedicle bolt is divided into a third thread segment, a rough rod segment, and an internal hexagonal heavy platform is arranged on the nut, the bolt installing device is a hollow structure, and is in counterpoint connection with the nut through a connection key at the front end, and the connection key is a boss matched with the internal hexagonal heavy platform. The invention overcomes the default of complex operation step in the prior art, and provides the single bolt type percutaneous zygopophysis pedicle bolt internal fixation system having low improvement cost.

Description

[0001] technical field [0002] The invention relates to a lumbar vertebral arch internal fixation screw for hospital orthopedic surgery and an application device for the screw, belonging to the field of medical instruments. Background technique [0003] The increasingly developed medical technology in today's world has successfully solved a large number of difficult and miscellaneous diseases that were difficult to cure in the past, but at the same time, changing diseases are also emerging with the upgrading of technology, so how to improve the treatment effect is placed on the majority of scientific researchers. before. [0004] Chinese invention patent 02157300.X discloses a pier bridge type pedicle system, which is composed of several orthopedic rods, cross bridges and multiple pedicle screws. The orthopedic rods are cylindrical rods, and the cross bridges are flat square cylinders. The pedicle screw includes a screw rod, the lower body of the screw rod is provided with...

Claims

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Application Information

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IPC IPC(8): A61B17/88A61B17/86A61B17/70
Inventor 周跃肖洪李杰
Owner 周跃
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