Non-transarticular external fixator for treating distal radius fracture

Abstract

The invention discloses a non-transarticular external fixator for treating a distal radius fracture. The non-transarticular external fixator comprises two main radius nails, a portal frame, a first connecting rod, a second connecting rod, a third connecting rod and a plurality of penetrating fixation needles. The upper ends of the main radius nails are connected to the first connecting rod throughnail rod clamps, the transverse part of the portal frame is connected to the front end of the first connecting rod through a rod-rod clamp, and both ends of the second connecting rod are respectivelyconnected to one longitudinal part of the portal frame and the first connecting rod respectively through rod-rod clamp, both ends of the third connecting rod are respectively connected to the other longitudinal part of the portal frame and the first connecting rod through rod-rod clamps, and both ends of each penetrating fixation needle are connected to two longitudinal parts of the portal framerespectively trough needle rod clamps. The non-transarticular external fixator has the advantages that when the external fixator is used for a non-transarticular surgery, wrist joints and fingers of apatient can move unrestrictedly and move immediately and bear part of functions, so that the comfort level of the patient is improved, the life burden on the patient is reduced, and the recovery process is accelerated.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a non-span-joint external fixator for treating fractures of the distal end of the radius. Background technique [0002] Fracture of the distal radius refers to the fracture within 2-3cm from the articular surface of the distal radius. It mainly occurs when the patient falls down with the palm of his hand on the ground. Because this place is the junction of cancellous bone and cancellous bone and compact bone, it is a mechanical Weak parts are prone to fractures. Distal radius fractures are multiple and common fractures, accounting for about 1 / 10 of all fractures. [0003] According to the direction of violence, fracture site and fracture displacement direction, it can generally be divided into extension type, flexion type, dorsal border fracture, and palmar border fracture; according to whether it is connected to the outside world, it can be divided into closed type and ...

AI Technical Summary

Problems solved by technology

[0004] External fixators have certain advantages in the treatment of open fractures, comminuted fractures, and osteoporotic fractures. However, the currently used external fixators are all cross-joint designs, with the proximal end fixed on the radial shaft and the distal end fixed on the metacarpal bone. The principle is to use the pulling tension of the soft tissue to maintain the stability of the fracture. While fixing the fracture site, it also fixes the wrist joint, and the movement of the fingers of the affected limb is also restricted.

During the treatment period, the patient's affected limb could not be used normally, which brought inconvenience to life. At the same time, due to the long-term immobilization of the patient's wrist joint and fingers, the later recovery time was longer, and even some dysfunctions were left over

In addition, since the metacarpal nails are threaded, tendon wear may also occur

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