Two-way expansion device for operative incision of human body

Abstract

The invention discloses a two-way expansion device for an operative incision of a human body. The two-way expansion device comprises a main expansion device (1) and a subsidiary expansion device, wherein the main expansion device (1) is a support expansion structure with one end hinged, and the front end of the main expansion device (1) is provided with an expansion fork (13); and a structure matched with the subsidiary expansion device is arranged at the front part of the main expansion device (1). According to the two-way expansion device, the main expansion device is matched with the subsidiary expansion device, and the expansion adjustment of the subsidiary expansion device adopts gear and rack type adjustment, so that the adjustment range can be easily controlled; and the expansion fork (13) is tightly matched due to the two-way adjustment structure of the main expansion device, so that the two-way expansion device can not be disconnected, and is good in positioning effect. The expanding and releasing operations of the expansion device can be completed only by two hands of one person, so that the two-way expansion device is fixed in installation, the operation difficulty of the whole operation can be reduced, the operation time can be shortened, and the possibility of the secondary injury to patients can be reduced.

Description

technical field [0001] The invention belongs to the technical field of medical devices, further belongs to the technical field of orthopedic devices, and specifically relates to a bidirectional expansion device with simple structure, suitable for human body surgical incisions, especially spinal surgical incisions. Background technique [0002] The human body is injured due to traumatic and pathological factors, and surgical treatment is often required. For example, lumbar disc herniation requires surgical removal of the herniated disc and mechanical repair to restore the normal function of the lumbar spine. Lumbar spine surgery requires a longitudinal incision along the spine. In order to facilitate the operation, the incision needs to be opened vertically and horizontally. The traditional method is to use a hook-shaped instrument to open the surgical incision by different people. Due to the uneven application of force, it is not only unfavorable to the operation, but also ...

AI Technical Summary

Problems solved by technology

Due to the uneven application of force, it is not only unfavorable to the operation, but also prolongs the operation time. Pulling the skin for a long time may cause insufficient blood supply and cause irreversible damage to the skin.

Expansion devices suitable for bidirectional stretching of surgical incisions have also been developed abroad, which have achieved good expansion effects, but are not conducive to popularization due to high prices

The expansion device in the prior art includes a longitudinal expansion device and a lateral expansion device, and the expansion of the longitudinal expansion device adopts a pushing structure, which is easy to be misplaced

The adjustment of the lateral expansion device adopts the sliding rack snap-fit ​​adjustment. Due to the existence of expansion resistance, it is easy to cause the adjustment range to be too large or too small during adjustment, which is difficult to control

When the vertical and horizontal expanders are used together, because there are many joints and the abutment structure is adopted, it is easy to slip off, which is not conducive to one-person operation and requires the cooperation of others, resulting in inconvenience in use

One person fixes the vertical expansion device, then places the horizontal expansion device in the slot of the vertical expansion device, and then holds it. At the same time, the staff needs to adjust the rack to adjust the horizontal expansion device, so the whole operation process requires more than one person It can only be completed. Improper coordination of personnel can easily lead to dislocation of the support point, disengagement, poor positioning effect, resulting in discomfort for the patient, long recovery time of the wound, and increased risk of infection, etc.

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