Minimally invasive tissue expander

Abstract

The invention relates to a retractor, in particular to a minimally invasive tissue spreader, which belongs to the technical field of medical instruments. According to the technical solution provided by the present invention, the minimally invasive tissue spreader includes a retractor base and several retractor sheets arranged in the retractor base, and the retractor sheets are placed in the retractor base through the retractor sheet positioning control mechanism, The hook pieces and the hook piece positioning control mechanism are connected in one-to-one correspondence. When the hook pieces are adjacent to each other in the hook base, they can form a cylindrical structure. Pull the bearing to make the desired adjustment. The present invention can freely adjust the adjustable hook sheet according to the needs of the operation, so that the pulling depth and angle of the adjustable hook sheet meet the operation requirements, and the brain tissue is pulled with an appropriate external force to fully expose the field of view of the operation site, which is safe and reliable.

Description

technical field [0001] The invention relates to a retractor, in particular to a minimally invasive tissue spreader, which belongs to the technical field of medical instruments. Background technique [0002] In craniocerebral surgery, in order to fully expose the surgical field of view, it is necessary to use a spreader to stretch the tissues surrounding the lesion, so that the surgeon can operate on the lesion. However, the human brain tissue is very important. Excessive damage will cause excessive damage to the cerebral cortex, resulting in impaired neurological function of the patient, which may lead to irreversible neurological organ function damage. [0003] In order to reduce damage to the cerebral cortex, the surgical approach is very important, and it is necessary to avoid important functional cerebral cortex areas, and at the same time, it is necessary to avoid large blood vessels and other parts. This requires the surgeon to choose a good surgical access before ope...

AI Technical Summary

Problems solved by technology

[0004] In order to reduce the instability of the brain tissue exposed by the surgeon's assistant, most of the retractors currently used in brain departments are two-leaf retractors that can be adjusted and fixed. However, the two-blade retractors can only pull in two corresponding directions. When it is large, the brain tissue in the adjacent position will bulge, which will interfere with the surgical field of view

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