Medical self-drilling self-tapping fixed bone spicule

A self-drilling and bone needle technology, applied in the direction of fixator, internal bone synthesis, fastening device, etc., can solve the problems of increased bleeding during operation, poor fixation of the fixed bone needle, secondary injury to the patient, etc., and improve the anchoring conditions. , Improve the clamping force and flexibility of use, and improve the effect of anchoring force

Active Publication Date: 2009-01-28
WUHAN CONSTANT SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This method makes the operation process complicated, inconvenient to operate, the operation time and the bleeding of the patient are increased. During the drilling process, the possibility of bone necrosis caused by the high-speed rotation of the drill bit and the high heat caused by severe friction increases. Insufficient fixation or fixation failure of the fixed bone pin, and repeated operations may cause secondary injury to the patient

Method used

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  • Medical self-drilling self-tapping fixed bone spicule
  • Medical self-drilling self-tapping fixed bone spicule
  • Medical self-drilling self-tapping fixed bone spicule

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Embodiment Construction

[0019] The following describes the implementation of the present invention in detail with reference to the accompanying drawings, but they do not constitute a limitation to the present invention, and are merely examples. At the same time, by explaining the advantages of the present invention, it will become clearer and easier to understand.

[0020] With reference to the drawings, it can be seen that the medical self-drilling and self-tapping fixed bone needle of the present invention includes an end drill blade part 1, a middle cylindrical body part 2, a tail end interface part 3 in an integrated structure, and the drill blade part 1 includes a drill blade 11 The tapping blade 12 and the fixed thread 13, the tapping blade 12 is located between the drill blade 11 and the fixed thread 13, the shape of the tapping blade 12 is gradually transitioned from the flat drill blade 11 to the same blade as the fixed thread 13 ( Such as figure 1 Shown). The drill cutting edge 11 includes two...

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Abstract

The invention provides a medical self-drilling and self-tapping fixed bone needle, comprising an end drill edge part (1) with integrated structure, a middle cylinder part (2) and an interface part (3) at the tail end; the drill edge part (1) comprises a drill edge (11), a tapping edge (12) and a fixed thread (13); the tapping edge (12) is arranged between the drill edge (11) and the fixed thread (13); the shape of the tapping edge (12) is gradually transited from low and flat drill edge (11) to an edge identical to the fixed thread (13). The medical self-drilling and self-tapping fixed bone needle overcomes the shortages that the existing bone needle operation has complex process and inconvenient operation and the operation time and blood outgoing quantity of the patient are increased, etc. The medical self-drilling and self-tapping fixed bone needle can complete the operations of drilling, tapping and bone needle fixing.

Description

Technical field [0001] The invention relates to a fixed bone needle used in a medical bone external fixator, more specifically it is a medical self-drilling and self-tapping fixed bone needle. Background technique [0002] The fixed bone pin used in the existing medical external bone fixator must be drilled on the bone in advance during surgical installation, and then tapped with a special tap matching the bone pin before it can be installed on the bone. Fix the bone pin. This method makes the surgical procedure complicated, inconvenient to operate, and increases the operation time and patient's bleeding. During the drilling process, the high-speed rotation of the drill bit and the high heat caused by intense friction increase the possibility of bone necrosis. Causes the fixation of the fixed bone pin to be weak or fails, and repeated operations may cause secondary injury to the patient. Summary of the invention [0003] The purpose of the present invention is to overcome the ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/84
Inventor 张冀
Owner WUHAN CONSTANT SCI & TECH
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