Embedded rapid cooling orthopedic twist drill and manufacturing method

A rapid cooling, embedded technology, applied in medical science, surgery, etc., can solve the problems of bone necrosis, cooling performance patient harm, poor thermal conductor, etc., and achieve the effect of free structural parameters

Pending Publication Date: 2018-12-11
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, cortical bone is a relatively poor thermal conductor. It is estimated that in metal cutting drilling, about 80% of the heat is taken away through chip breaking, while only about 60% of the heat can pass through during bone drilling. Bon

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  • Embedded rapid cooling orthopedic twist drill and manufacturing method
  • Embedded rapid cooling orthopedic twist drill and manufacturing method
  • Embedded rapid cooling orthopedic twist drill and manufacturing method

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with specific embodiments.

[0033] The invention discloses an embedded rapid cooling orthopedic twist drill, which comprises a drill handle 1, a drill body connecting rod 6 and a drill body 14 connected in sequence;

[0034] There is a connecting section between the drill shank 1 and the connecting rod 6 of the drill body, and two cooling water ring grooves are opened along the outer peripheral wall of the connecting section;

[0035] Along the axial direction of the drill body 14, an internal circulation spiral cooling water channel 9 is embedded; the water inlet 7 of the internal circulation spiral cooling water channel 9 is located in one of the cooling water ring grooves, and the water outlet 8 is located in the other cooling water ring groove Inside;

[0036] A rotatable collar 4 is sheathed on the outside of the two cooling water ring grooves; on the collar 4 corresponding to the posi...

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PUM

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Abstract

The invention discloses an embedded rapid cooling orthopedic twist drill and a manufacturing method. Two cooling water ring grooves are formed in the outer circumferential wall of a connecting sectionof the orthopedic twist drill, a sleeve ring is additionally arranged outside the orthopedic twist drill, and a closed rotating connector capable of rotatably conveying liquid media by 360 degrees isformed among the cooling water ring grooves and the sleeve ring. External cooling liquid is led into an internal circulation spiral cooling water channel in a drill body to cool the drill body, and the drill body and a cutting portion thereof are of split detachable structures. According to the orthopedic twist drill, by the aid of the external conveyed cooling liquid, the internal circulation spiral cooling water channel rapidly cools the bone drill without polluting a wound of a patient. A tool no longer needs to be sharpened by experienced staff after the cutting portion is abraded, and awear-out part is directly replaced. Key components of the orthopedic twist drill adopt selective laser melting, used materials can be same or different metal powder materials, and the orthopedic twistdrill has a certain economic benefit advantage in terms of waste tool recovery and reuse.

Description

technical field [0001] The invention relates to an orthopedic twist drill and processing technology, in particular to an embedded rapid cooling orthopedic twist drill and a manufacturing method. Background technique [0002] Bone drill is a kind of medical device, which is often used in fracture surgery. During the operation, medical personnel need to use a bone drill to make a hole in the patient's bone surface, and finally the operation can be completed. Existing studies have proved that the cutting force and cutting temperature of the bone drill have a significant impact on the drilling effect. Higher cutting speed and feed rate can reduce bone cracks and thermal damage to bone, but there are new challenges to bone drill wear and continuous heat dissipation. Bone is a complex anisotropic, porous and viscoelastic composite material that is very sensitive to the impact of cutting force and cutting effect brought by the wear of the bone drill, so long-term cutting wear is ...

Claims

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Application Information

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IPC IPC(8): A61B17/16
CPCA61B17/16A61B2017/00526
Inventor 王迪窦文豪杨永强
Owner SOUTH CHINA UNIV OF TECH
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