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Retractable bone defect repairing external fixation device

An external fixation and bone defect technology, applied in the field of medical devices, can solve the problems of inability to adjust the size of the patient's limbs, the patient's life, and inconvenient movement, and achieve the effects of small local blood supply interference, reliable fixation, and uniform stress distribution

Active Publication Date: 2019-04-05
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing external fixation brackets usually include bone needles and ring braces. The bone needles are mounted on the ring braces through universal fixing nuts, but the existing ring braces are usually of fixed diameter and cannot be adjusted according to the size of the patient's limbs. Afterwards, it usually causes great inconvenience to the patient's life and movement.

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  • Retractable bone defect repairing external fixation device
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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] Such as figure 1 , 2 As shown, the telescopic bone defect repair external fixation device disclosed in the present invention includes 4 telescopic annular braces and a universal bone needle device, and the 4 telescopic annular braces are connected as a whole through a plurality of connecting rods 6, preferably , There are four connecting rods 6, and the distance between two adjacent connecting rods 6 is quite. 4 telescopic ring braces are arranged up and down at intervals, two of which are distal rings, and the other two are proximal rings. There are at least two universal bone needle devices on each retractable annular support. Wherein, the universal bone needle device includes a fixed pin 7 and a universal fixed nut 3, the universal fixed nut 3 is inst...

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Abstract

The invention relates to a retractable bone defect repairing external fixation device. The retractable bone defect repairing external fixation device comprises four retractable annular supports and universal bone needle devices. The four retractable annular supports are arranged at intervals up and down and connected into a whole by a plurality of connecting rods. Each of the retractable annular support is provided with at least two universal bone needle devices. The retractable annular supports each include a first half ring and a second half ring, and the end parts of the first half ring andthe second half ring are connected by sliding open arms. The universal bone needle devices comprise fixing needles and universal fixing nuts, the universal fixing nuts are mounted on the retractableannular supports, and the fixing needles are mounted on the universal fixing nuts. According to the retractable bone defect repairing external fixation device, the size of the retractable annular supports can be adjusted according to the size of the limb of a patient, 2mm steel needles are more minimally invasive, the local blood supply disturbance is small, and a more comfortable treatment experience and more choices can be provided for the patients with bone defects and requiring limb reconstruction; and through multi-plane needle insertion, the fixation is reliable and the stress distribution is uniform, and angulation deformity of the limb can be corrected while repairing bone nonunion.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a retractable external fixation device for bone defect repair. Background technique [0002] External fixation brackets have become the first choice for corresponding orthopedic surgical treatment. Orthopedic fixation technology is to connect adjacent bone segments or limbs through percutaneous needles and external connectors, and achieve stable fixation after the basic anatomical reduction of the fracture end. It is a good orthopedic surgical treatment technique to provide the required biomechanical environment for fracture healing and to meet the functional recovery exercise needs of patients. This method is neither internal fixation nor external fixation, but it has the effect that internal fixation and external fixation could not achieve in the past. [0003] Existing external fixation brackets usually include bone needles and ring braces. The bone needles are mounte...

Claims

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Application Information

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IPC IPC(8): A61B17/66
CPCA61B17/66
Inventor 李军刘雷张正东王善玺
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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