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Bone cement channel pedicle anchor

A pedicle and bone cement technology, applied in the directions of internal bone synthesis, internal fixator, fixator, etc., can solve the problems of loosening of the internal fixation screw, clinical treatment troubles, refractures, etc., to enhance strength and increase medical expenses. , The effect of simplifying the operation steps

Pending Publication Date: 2020-09-22
THE AFFILIATED HOSPITAL OF PUTIAN UNIV (THE SECOND HOSPITAL OF PUTIAN CITY)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Internal fixation can easily lead to related complications, such as refracture due to stress concentration in adjacent vertebral bodies, loosening of internal fixation screw channels, prolapse, etc., so it brings great troubles to clinical treatment

Method used

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  • Bone cement channel pedicle anchor
  • Bone cement channel pedicle anchor

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Embodiment Construction

[0017] like figure 1 and figure 2 As shown, a bone cement channel pedicle anchor 100 is made of titanium metal. The anchor 100 is a hollow cylinder, which includes in turn: a front threaded section 101, a nut section 102, and a rear end casing section 103; the thread pitch of the front threaded section 101 gradually becomes smaller from the front end to the tail end; the front threaded section The length of 101 is 4.5cm, and the length of the tail sleeve section 103 is 10cm.

[0018] The inner diameter (hollow diameter) of the front threaded section 101 is 3 mm, and the outer diameter (including the thread) is 5.5 mm. The unilateral thread depth of the front threaded section 101 is 0.4 mm, and the wall thickness (excluding threads) is 0.8 mm.

[0019] Operation process:

[0020] Step 1: first use a 2.5mm diameter puncture needle to establish a transpedicular channel.

[0021] Step 2: screw the pedicle anchor 100 into the bone cement channel percutaneously along the punct...

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PUM

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Abstract

The invention discloses a bone cement channel pedicle anchor. The bone cement channel pedicle anchor is a hollow cylinder and sequentially comprises a front-end threaded section, a nut section and a rear-end tail sleeve section, wherein the top end of the front-end threaded section is a tip end part, and the thread pitch of threads of the front-end threaded section is gradually reduced from the front end to the tail end; the length of the front-end threaded section is 4.5 cm; the length of the tail sleeve section is 10 cm; and the anchor is made of metallic titanium. According to the hollow bone cement channel pedicle anchor disclosed by the invention, a screw screwed into the pedicle can be firmly, stably and durably anchored in the pedicle, so that the strength, anchoring force and stability of bone cement blocks in a vertebral body are enhanced.

Description

【Technical field】 [0001] The invention belongs to the technical field of medical equipment consumables, in particular to a bone cement channel pedicle anchor. 【Background technique】 [0002] With the extension of human life expectancy and population aging, the incidence of senile osteoporotic vertebral compression fractures is increasing year by year. According to statistics, there are about 1.4 million patients with osteoporotic vertebral fractures in the world every year, generally without neurological symptoms. About 30% of osteoporotic vertebral fractures will collapse, of which 13% will show nonunion, and 3% will collapse with delayed nerve injury. For such fractures, PVP / PKP is a safe, minimally invasive and effective technique for treating such fractures. However, the complications brought about by it, such as bone cement mass loosening, displacement and prolapse after bone cement injection, resulting in loss of vertebral body height reduction, instability, re-pain,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/86A61B17/70
CPCA61B17/864A61B17/866A61B17/8625A61B17/7094A61B17/70A61B2017/8655
Inventor 吴育俊林海滨吴向军
Owner THE AFFILIATED HOSPITAL OF PUTIAN UNIV (THE SECOND HOSPITAL OF PUTIAN CITY)
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