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Navicular bone guide apparatus

A guide, navicular technology, applied in bone drill guidance, medical science, surgery, etc., can solve problems such as unfavorable recovery of wrist joint, affect joint function, increase surgical trauma, etc. Easy to observe the effect of drilling

Pending Publication Date: 2019-08-27
山东海集汇技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reduction in the prior art generally uses Kirschner wires, fixed steel plates, etc. to reset and fix the fractured carpal bones. Since these devices have no pressurizing effect on the intercarpal joints, a long period of external fixation is required after the operation, which will cause serious damage to the patient's functional recovery. A certain impact, that is able to recover slowly
Moreover, plate and screw fixation requires drilling holes in the smaller carpal bones, which is complicated to operate, increases surgical trauma, affects joint function, and may cause postoperative complications such as pain and infection, which is extremely unfavorable to the recovery of the wrist joint.

Method used

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  • Navicular bone guide apparatus
  • Navicular bone guide apparatus
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like Figure 1-3 A scaphoid guide is shown, including a fixing frame 1 and a nail foot 2,

[0031] The top of the fixed frame 1 is provided with a holding part 3;

[0032] The nail feet 2 are located at both ends of the fixed frame 1, and the nail feet 2 are a left nail foot 21 and a right nail foot 22, and the left nail feet 21 and the right nail feet 22 are respectively provided with left guides. Sleeve 41 and right guide sleeve 42;

[0033] The thimble 5 is nested in the left guide sleeve 41 , and the fixed pipe 6 is movably nested in the right guide sleeve 42 .

[0034] The holding part 3 , the nail feet 2 and the fixing frame 1 are all of an integral structure, and are all made of tough materials.

[0035] The length of the nail foot 2 is 10-40mm.

[0036] The left guide sleeve 41 and the right guide sleeve 42 are arranged at the bottom of the nail foot 2 .

[0037] The end of the left guide sleeve 41 is a sawtooth structure.

[0038] The length of the grippi...

Embodiment 2

[0042] Working principle and working process of the present invention as shown in the figure:

[0043] Firstly, the distance between the left and right guide sleeves of the present invention is equivalent to the distance between the two ends of the hand with fractured scaphoid bone, so that the left and right sleeves can just initially fix the scaphoid guider to the two ends of the fractured scaphoid bone.

[0044] The thimble is fixed on the bone block through the left guide sleeve, and the front end position of the right guide sleeve is observed through the observation hole on the right nail foot. Determine the location of the hollow nail mounting holes. After positioning, the hollow nail is inserted into the patient's scaphoid from the fixing tube to complete the precise positioning drilling, and the hollow nail is fixed and positioned and the auxiliary drilling operation is completed to disassemble the invention.

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Abstract

The invention provides a navicular bone guide apparatus, including a fixing frame and nail feet, wherein the top of the fixing frame is provided with a grip part; the nail feet are arranged at two ends of the fixing frame, and the nail feet are a left nail foot and a right nail foot; a left guide sleeve and a right guide sleeve respectively arranged on the left nail foot and the right nail foot; an ejector pin is nested in the left guide sleeve, and a fixing pipe is movably nested in the right guide sleeve. The navicular bone guide apparatus is reasonable in structure and based on the operation of a wrist arthroscopy, and is an auxiliary device for minimally invasive surgery; the scope of application of the wrist arthroscopy is further expanded clinically. The fixing axis for the navicularbone can be determined by one step without the aid of a C-arm X-ray. Compared with traditional surgery, damage to patients caused by multiple X-ray exposures is avoided. The one-step determination ofthe navicular bone axis to guide a cannulated screw to fix a fastening screw greatly shortens the operation time, and reduces the economic burden of a patient caused by the anesthesia time, and the surgical risk caused by the too long operation time.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and further belongs to the technical field of orthopedic devices, in particular to a scaphoid guide, in particular to an auxiliary device for positioning and drilling of the scaphoid fixer during carpal fracture fixation. Background technique [0002] The navicular is the hub of the wrist joint and is a major cause of wrist dysfunction. Scaphoid fractures are very common clinically, accounting for 70% of carpal fractures, and are the second most frequent fractures in upper limb fractures (after distal radius fractures), and they occur most frequently in people aged 20-30. [0003] The traditional treatment methods for scaphoid fractures usually use plaster immobilization and open internal fixation. Wherein, most of non-displaced fresh scaphoid fractures can be healed by plaster immobilization, however, the immobilization time is as long as 12-16 weeks, which can lead to joint stiffness a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/17
CPCA61B17/171A61B17/1728A61B17/1782
Inventor 付胜强
Owner 山东海集汇技术服务有限公司