Implant for treating old mallet finger deformity

A technology of implants and hammer fingers, which is applied in medical science, surgery, etc., to achieve the effect of quick recovery of function and relief of pain

Inactive Publication Date: 2011-10-12
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problem of old mallet finger deformity, and an implant for treating old mallet finger deformity is provided

Method used

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  • Implant for treating old mallet finger deformity
  • Implant for treating old mallet finger deformity
  • Implant for treating old mallet finger deformity

Examples

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Comparison scheme
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Embodiment Construction

[0017] The present invention is described in detail below in conjunction with accompanying drawing:

[0018] refer to figure 1 , Figure 4 and Figure 5 , in the surgical treatment of old mallet finger deformities, we found that the main reason for deformity recurrence after surgery is that the extensor tendon 1 ending at the distal phalanx 2 is in a relaxed state, that is, although the extensor tendon 1 exists continuously, the patient wants to actively When straightening the distal phalanx 2, the extensor tendon 1 is loose and does not slide, so the distal phalanx 2 cannot be straightened, as in figure 1 shown in . Once an object with a certain thickness is placed between the extensor tendon 1 and the middle phalanx 3, such as the tip of a blood vessel clamp commonly used in surgery, the tension of the extensor tendon 1 will be increased. At this time, when the patient actively straightens the finger, the extensor tendon 1 can be seen Sliding, so as to drive the extensio...

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PUM

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Abstract

The invention discloses an implant for treating old mallet finger deformity, which aims to overcome problem of the old mallet finger deformity. The implant (4) is a flat solid unit which is surrounded by a bottom surface and an upper surface; the implant (4) is designed as an oblate solid unit, a flat rectangular solid unit, a flat square solid unit, or a flat elliptical solid unit; the bottom surface of the implant (4) is set as a plane or a curved surface which is the same as the reverse side of a middle phalanx (3); the upper surface of the implant (4) is set as a spherical surface, a cylindrical surface, or other curved surfaces; the implant (4) is adhered to the far end of the middle phalanx (3) by using bone glue; the bottom surface of the implant (4) is in contact with the reverse side of the middle phalanx (3); the upper surface of the implant (4) is in contact with an extensor tendon (1); a non-through hole with an internal screw thread is machined on the axis of symmetry of the implant (4), and the implant (4) is fixed at the far end of the middle phalanx (3) by using a screw (5); and the implant (4) is made from silica gel, titanium alloy, ceramics, artificial bone, andthe like.

Description

technical field [0001] The invention is applied to the treatment of deformed hammer fingers which are common in hand surgery. More specifically, the present invention relates to an implant for the treatment of old mallet finger deformities. Background technique [0002] Hammer finger is a common hand deformity in clinical work of hand surgery. It is caused by the rupture of the extensor tendon near the insertion point of the finger or the avulsion fracture of the tendon insertion point. Passive straightening, not active straightening. The acute stage can be treated conservatively with external fixation, or surgically repairing the ruptured tendon or reducing the avulsion fracture with internal fixation. The fingers need external fixation for six weeks. However, many patients turn to old injuries due to missing the opportunity of acute treatment. In addition, regardless of conservative treatment or surgical treatment, the chances of recurrence and old injuries are very high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/56
Inventor 朱清远崔树森王玉发张为众
Owner JILIN UNIV
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