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Mini-type metacarpal bone and finger bone external fixing support

A metacarpophalangeal and external fixation technology, applied in the field of external fixation devices, can solve problems such as affecting the function and the inability of early exercise of fingers, and achieves the effects of firm fixation, satisfactory recovery of appearance and function, and reduction of tendon adhesions.

Inactive Publication Date: 2013-05-15
SHANGHAI SIXTH PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The current fracture reduction and fixation method often requires two-stage joint fusion because the fingers cannot be exercised early after surgery, or because of traumatic arthritis joint pain, so a new reduction and fixation device or method is needed to achieve more Satisfactory treatment and functional restoration effect

Method used

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  • Mini-type metacarpal bone and finger bone external fixing support
  • Mini-type metacarpal bone and finger bone external fixing support
  • Mini-type metacarpal bone and finger bone external fixing support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] refer to figure 1 , in this embodiment, the microcarpal and phalangeal fracture external fixation bracket includes a first clamping block 1 and a second clamping block 2 , and the first clamping block 1 and the second clamping block 2 are connected by a connecting rod 3 .

[0027] The second clamping block 2 is provided with a through hole, the connecting rod 3 passes through the through hole, and one end is connected to the clamping block 1 .

[0028] The second clamping block 2 is provided with a threaded hole to communicate with the through hole and the outside, and the compression screw 22 is screwed in from the threaded hole to fix the connecting rod 3 .

[0029] When in use, the bone needle is fixed on the bone, and the outer end is clamped by the first clamping block 1 and the second clamping block 2, thereby realizing the connection of broken bones.

Embodiment 2

[0031] On the basis of embodiment 1, with reference to figure 1 The connecting rod 3 is connected with a fixed block 5 at the outer end of the second clamping block 2 , and the fixed block 5 is provided with a through adjusting screw hole 52 on the side of the connecting rod 3 .

[0032] The second clamping block 2 is also provided with a protruding part 21 on the side of the through hole, and the protruding part 21 is provided with a through adjusting screw screw hole, the adjusting screw hole 52 of the fixed block 5 and the adjusting screw screw of the second clamping block 2 The holes are on the same straight line.

[0033] The adjusting screw 4 passes through the adjusting screw hole 52 of the fixing block 5 and the adjusting screw hole of the second clamping block 2 in sequence.

[0034] Rotate the adjusting screw 4, the second clamping block 2 can move back and forth, thereby driving the bone nail clamped by the second clamping block 2 to move forward and backward, ther...

Embodiment 3

[0037] On the basis of embodiment 1 or 2, with reference to figure 1 , the first clamping block 1 is provided with a spherical cavity, one end of the connecting rod 3 inserted into the first clamping block 1 is a spherical end 31, and the spherical end 31 is placed in the spherical cavity to form a universal joint with the spherical cavity .

[0038] The connection between the connecting rod 3 and the first clamping block 1 is designed as a universal joint, which has good adjustability and can effectively correct the fracture rotation or angular deformity. If the fracture is found to be angled or rotated after surgery, it can be obtained by adjusting the fracture. Good alignment of fractures.

[0039] In this case, there is an arcuate block 11 at the rear end of the spherical cavity, and the rear end of the arcuate block 11 is a clamping screw 12 for better control of the universal joint.

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PUM

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Abstract

The invention discloses a mini-type metacarpal bone and finger bone external fixing support, in order to seek a simple, convenient-to-implement and effective treatment method for metacarpal bone and finger bone fractures of a hand portion, and particularly for infected open fractures near joints and combined local traumas. Through holding force of a fixing pin to a bone, mechanical reset force and firm fixing force of an external connecting rod are transmitted to interior bones to enable the connecting rod to be moved or fixed according to the needs of fracture or joint reset. The mini-type metacarpal bone and finger bone external fixing support has the advantages of being little in trauma, and stable and reliable in fixing.

Description

technical field [0001] The invention relates to a fracture fixation device, in particular to an external fixation device which can be used for human palm and phalanx fractures. Background technique [0002] Metacarpal and phalanx fractures are the result of direct violence from hand trauma. They have a high incidence in fractures and are often accompanied by combined injuries of tendons, nerves, and blood vessels. Metacarpal and phalanx fractures have the common characteristics of tubular fractures of limbs, and there are also Its particularity is that the metacarpal and phalanx bones are short, participate in many joints, have high functional requirements, have a great impact on the shape, and the tissue structure around the bone is complex. Small displacement and angulation after fracture will affect the function of the hand. [0003] Therefore, the treatment of complex metacarpal and phalanx fractures involving the articular surface has always been a difficult point in or...

Claims

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Application Information

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IPC IPC(8): A61B17/66
Inventor 王挺郑宪友柴益民
Owner SHANGHAI SIXTH PEOPLES HOSPITAL
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