Muscle spreader suitable for spinal Wiltse approach surgery

Abstract

The invention relates to a muscle distractor suitable for spinal Wiltse approach surgery, belongs to the technical field of medical instruments, and aims to solve problems that an existing retractor or retractor is limited in traction effect, interferes with a transverse process and affects a screw placement angle at the same time. The muscle spreader comprises a pincer-shaped distracting structure, and the pincer-shaped distracting structure comprises a left half pincer and a right half pincer, wherein forceps arms are arranged at the front part of a hinge point, forceps handles are arrangedat the rear part of the hinge point, the front ends of the two forceps arms are respectively connected with a first baffle and a second baffle through movable joints, the extending directions of the first baffle and the second baffle are the same, the lower edges of the first baffle and the second baffle are opening surfaces, and two opening surfaces are respectively bent towards the directions deviating from each other; an avoiding opening is further formed in the lower edge of the first baffle or the lower edge of the second baffle. When the muscle spreader is used, the muscle spreader doesnot interfere with the transverse process, the surgical field is widened, and screw placement is facilitated.

Description

Technical field: [0001] The invention belongs to the technical field of medical instruments, and in particular relates to a muscle spreader suitable for spinal Wiltse approach operation. Background technique: [0002] At present, in order to cure spinal diseases, more and more patients choose surgical treatment. In the treatment of spinal surgery-related diseases such as spinal fractures and lumbar disc herniation, pedicle screw internal fixation technology has been widely used. The surgical approaches mainly include the posterior median approach and the transparaspinal muscle space approach. The former is the traditional approach for pedicle screw internal fixation. The surgical segment can be fully exposed, but the paraspinal muscles need to be extensively stripped, so the damage is large, and complications such as lumbar muscle weakness, muscle scarring, and intractable low back pain are prone to occur after surgery. However, the approach through the paraspinal muscle s...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a muscle brace suitable for spinal Wiltse approach surgery in order to overcome the defects of existing retractors such as difficulty in placement, poor retraction effect, formation of barriers with the transverse process, and blocking of the insertion angle of pedicle screws. The spreader, by designing the avoidance opening on the baffle plate of the spreader, not only can effectively avoid the obstruction of the transverse process, but also play a better avoidance role when the pedicle screw is placed at a camber angle

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