Intervertebral expander for TLIF (Transforaminal Lumbar Interbody Fusion) surgical channel

A surgical channel and spreader technology, which is applied in the field of medical appliances, can solve the problems of difficulty in implanting fusion devices, affecting surgical operations, troublesome operation, etc., and achieves the effects of saving operation time, stabilizing the surgical channel, and simple structure

Active Publication Date: 2016-05-25
SHANDONG WEIGAO ORTHOPEDIC DEVICE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has the following disadvantages: the connecting rod just blocks the surgical operation area, which affects the surgical operation, it is difficult to operate completely outside the nerve root, it is easy to cause damage to the cauda equina of the nerve root, and it is difficult to implant the fusion device
The top wire and pedicle screw need to be locked repeatedly, wh

Method used

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  • Intervertebral expander for TLIF (Transforaminal Lumbar Interbody Fusion) surgical channel
  • Intervertebral expander for TLIF (Transforaminal Lumbar Interbody Fusion) surgical channel
  • Intervertebral expander for TLIF (Transforaminal Lumbar Interbody Fusion) surgical channel

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Example Embodiment

[0017] like Figure 1-3 The shown TLIF surgical channel intervertebral spacer is provided with a spacer rack 6, and the spacer rack 6 is provided with two spaced arms 11 parallel to each other, at least one of the spacer arms 11 can be opened along the The longitudinal sliding of the rack 6, as can be seen from the figure, the structure that the spreader arm can slide longitudinally along the spreader rack is: the spreader arm 11 is provided with a chute, and the spreader rack can freely slide through the inside the chute. The opening arm 11 , which can slide longitudinally along the opening rack, is provided with an anti-reverse pawl 3 matched with the opening rack 6 . The structure of the anti-reverse pawl described in this embodiment is: the opening arm 11 There is a hinged seat 2 on it, the middle part of the anti-reverse pawl 3 is hinged with the hinged seat 2 through a pin shaft, the front part of the anti-reverse pawl 3 is a reverse-resistant tooth matched with the tee...

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Abstract

The invention discloses an intervertebral expander for a TLIF (Transforaminal Lumbar Interbody Fusion) surgical channel, and relates to the technical field of medical instruments. The intervertebral expander for the TLIF surgical channel is provided with an expanding gear rack, wherein the expanding gear rack is provided with two expanding arms; at least one expanding arm can longitudinally slide along the expanding gear rack; the expanding arm which can be longitudinally slid along the expanding gear rack is provided with a non-return pawl which cooperates with the expanding gear rack; the two expanding arms are provided respectively with a vertebral pedicle screw sleeve which is used for being connected with a vertebral pedicle screw; the expanding gear rack between the two expanding arms is provided with a traction base; the traction base is provided with a sliding hole; traction screw rods are arranged in the sliding hole; the traction screw rod at the back side of the traction base is provided with a traction nut; the front part of the traction screw rod at the front side of the traction base is provided with a traction hook plate. The intervertebral expander for the TLIF surgical channel is simple in structure and is convenient to use; surgical operation is not influenced; the firm surgical channel can be quickly established.

Description

technical field [0001] The invention relates to the technical field of medical appliances, in detail, it is a TLIF surgical channel intervertebral distractor that is simple in structure, easy to use, does not affect the surgical operation, and can quickly establish the surgical channel. Background technique [0002] We know that decompression, fixation, and fusion are the three principles of spinal internal fixation surgery. Intraoperative decompression and intervertebral treatment operations need to fully expose the decompression area as much as possible to stabilize the upper and lower vertebral bodies. At present, the clinical preoperative channel establishment method is: implant pedicle screws on the vertebral body that needs to be expanded, install connecting rods on the pedicle screws, and use distracting forceps to apply force through the connecting rods to support the vertebral body. Open, use top wire to fix; achieve the purpose of vertebral body distraction and sta...

Claims

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Application Information

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IPC IPC(8): A61B17/02A61B17/56A61B17/00
CPCA61B17/00234A61B17/0206A61B17/0218A61B17/025A61B2017/0256A61B2017/564
Inventor 张文志邱锅平姜磊郑晓义
Owner SHANDONG WEIGAO ORTHOPEDIC DEVICE COMPANY
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