CN-115006067-B - Holding device and holding method

Abstract

The invention relates to the technical field of medical instruments for holding an intervertebral fusion device, in particular to a holding device and a holding method, wherein the holding device comprises a screw rod, an inner sleeve, an outer sleeve, a knob, a locking block, wherein the front end of the outer sleeve is provided with a clamping joint which is clamped with an inner supporting block in the fusion device, the inner sleeve is arranged in the outer sleeve, the inner sleeve and the outer sleeve are in sliding and non-rotating connection, the rear end part of the inner sleeve extends out of the outer sleeve and is in threaded connection with the knob, the rear end surface of the inner sleeve is provided with a fixed tooth, the front end of the screw rod extends out of the outer sleeve, the rear end of the screw rod extends out of the inner sleeve and is provided with the locking block, and the front end surface of the locking block is provided with the locking tooth meshed with the fixed tooth.

Inventors

• XU ZHENSHAN
• QI JIZONG
• SONG YONG

Assignees

• 博能华医疗器械（北京）有限公司

Dates

Publication Date

20260508

Application Date

20220728

Claims (1)

1. 1. The utility model provides a take ware, its characterized in that take ware including screw rod, interior sleeve pipe, outer tube, knob, locking piece, the front end of outer tube be equipped with the joint of interior supporting shoe joint in the ware that fuses, the outer tube in be equipped with interior sleeve pipe, interior sleeve pipe and outer tube slip and do not rotate and be connected, interior sleeve pipe rear end stretches out the outer tube and with knob threaded connection, interior sleeve pipe's rear end face is equipped with the fixed tooth, interior sleeve pipe interpolation screw rod, the front end of screw rod stretches out the outer tube, the rear end of screw rod stretches out interior sleeve pipe and is equipped with the locking piece, the front end of locking piece be equipped with the locking tooth with the fixed tooth meshing, realize screw rod, interior sleeve pipe and the irrotational locking of outer tube through locking tooth and fixed tooth meshing, the screw rod rear end be equipped with two at least marble grooves along the screw rod axis direction, the locking piece on be equipped with marble mounting hole, be equipped with marble, spring and closing cap in the marble mounting hole, the screw rod on be equipped with the guide profile in the guide block, be equipped with the guide profile in the locking piece and with guide profile and cooperate the guide profile face and stretch out the guide profile and stretch out the inner tube, realize the boss through the guide profile joint with the boss through the guide slot with the joint of the boss in the end of the outer tube, the boss is equipped with the boss is connected with the boss in the boss through the boss die joint with the tip of the boss die, the boss die joint is connected with the tip at least one end of the boss die.

Description

Holding device and holding method Technical Field The invention relates to the technical field of medical instruments for holding an intervertebral fusion device, in particular to a holding device and a holding method which have the advantages of simple structure, good holding effect, simple holding operation and improved bone grafting efficiency. Background As is well known, clinical spinal degeneration in orthopaedics is common, and the spinal disc degeneration, spinal canal stenosis, spondylolisthesis and the person who presses spinal cord or nerve root often need operation treatment, thoroughly remove the pressing, restore the physiological curvature of the spine and ensure the spinal stability. Other spinal deformities, trauma, tumors, revision surgery, and infected patients sometimes require interbody fusion to stabilize the lumbar spine segment. The interbody fusion cage has better curative effect on the above spinal diseases, is simple to operate, convenient to use, high in fusion rate and free of complications of bone grafting fusion, and is widely applied and clinically. The prior interbody fusion cage is matched with the holding device, the interbody fusion cage comprises an inner supporting block and an outer expanding block, the holding device moves the inner supporting block through screw threads in the holding process to realize the opening function, the prior interbody fusion cage is in a connection state between the inner supporting block and the outer expanding block in an initial state, the holding device drives the inner supporting block to move through the rotation of a handle to realize the opening, and the prior inner supporting block is connected with the outer expanding block in the initial state, so that the expanding effect is poor, if the inner supporting block and the outer expanding block are connected in a separated connection mode, the opening space can be enlarged, the opening effect is ensured, but the opening effect is not realized through the corresponding holding device, and the prior holding device only holds the opening function and has no bone grafting function. Disclosure of Invention The invention aims to solve the defects of the prior art and provides the holding device and the holding method which have the advantages of simple structure, good holding effect, simple holding operation and improved bone grafting efficiency. The technical scheme adopted for solving the technical problems is as follows: The utility model provides a hold and get ware, its characterized in that hold and get ware include screw rod, interior sleeve pipe, outer tube, knob, locking piece, the front end of outer tube be equipped with the joint of interior supporting shoe joint in the fusion ware, the outer tube in be equipped with interior sleeve pipe, interior sleeve pipe and outer tube slip and do not rotate to be connected, interior sleeve pipe rear end portion stretches out the outer tube and with knob threaded connection, interior sleeve pipe's rear end face is equipped with the fixed tooth, interior sleeve pipe inserts the screw rod, the front end of screw rod stretches out the outer tube, the rear end of screw rod stretches out interior sleeve pipe and is equipped with the locking piece, the front end face of locking piece be equipped with the locking tooth with fixed tooth meshing, realize the non-rotatory locking of screw rod, interior sleeve pipe and outer tube through locking tooth and fixed tooth meshing. The rear end of the screw rod is provided with at least two marble grooves along the axis direction of the screw rod, the locking block is provided with a marble mounting hole, a marble, a spring and a sealing cover are arranged in the marble mounting hole, the marble is connected with the sealing cover through the spring, and the sealing cover is fixed on the marble mounting hole. The screw rod is provided with the guide section, the guide groove surface matched with the guide section is arranged in the locking block, and the screw rod is in sliding non-rotating connection in the locking block through the matching of the guide section and the guide groove surface. The rear end of the screw rod is provided with an interface which is connected and matched with the quick-change handle, and the screw rod is connected with the quick-change handle through the interface. The clamping connector at the front end of the outer sleeve comprises at least two clamping spring pieces, wherein the clamping spring pieces are distributed on the circumferential direction of the end part of the outer sleeve, the rear end of each clamping spring piece is connected with the outer sleeve, the outer side of the front end of each clamping spring piece is provided with a convex clamping convex head, and the inner supporting blocks are clamped through the matching of the clamping convex heads and the clamping spring pieces. The holding method of the holding device is characterized by comprising the followi