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CN-224220217-U - Implant fixing equipment

CN224220217UCN 224220217 UCN224220217 UCN 224220217UCN-224220217-U

Abstract

The utility model belongs to the technical field of medical instruments, in particular to implant fixing equipment, which comprises a bone plate and bone tissues, wherein the lower end of the bone plate is fixedly connected with a bone nail, the inner bottom end of the bone nail is rotationally connected with gears, rectangular grooves are formed in the opposite side walls of the bone nail, the inner bottom end of the bone nail is slidably connected with two racks, the racks are meshed with the gears, a limiting mechanism for limiting the racks is arranged in the rectangular grooves, the side wall of the rack is connected with a clamping block through a second spring, and the upper end of each rack is fixedly connected with a sliding block. The utility model has reasonable structure, and the rotating rod drives the gear to rotate, so that racks on two sides are driven to move reversely, and the clamping block enters the third groove. When the clamping block touches the inner wall of the groove, the clamping block stops moving, and the rack continues moving, so that the second spring is compressed, and the bone nail and the bone tissue are tightly fixed. If the fixation is required to be released, the rotating rod is only required to be reversely rotated, a special tool is not required, the operation is effectively simplified, and the time cost is reduced.

Inventors

  • CAO GANG
  • LU JUN
  • CHEN JIANAN

Assignees

  • 苏州吉美瑞医疗器械股份有限公司

Dates

Publication Date
20260512
Application Date
20250710

Claims (7)

  1. 1. The implant fixing device is characterized by comprising a bone plate (1) and bone tissues (2), wherein the lower end of the bone plate (1) is connected with a bone nail (12), the inner bottom end of the bone nail (12) is rotationally connected with a gear (14), rectangular grooves (13) are formed in two opposite side walls of the bone nail (12), two racks (15) are slidably connected to the inner bottom end of the bone nail (12), the racks (15) are meshed with the gear (14), a limiting mechanism for limiting the racks (15) is arranged in the rectangular grooves (13), the side wall of each rack (15) is connected with a clamping block (16) through a second spring (17), the upper end of each rack (15) is connected with a sliding block (18), the inner bottom end of each clamping block (16) is provided with a sliding groove (19), the sliding blocks (18) slide in the adjacent sliding grooves (19), the upper ends of the gears (14) are fixedly connected with rotating rods (7), the rotating bone plates (1) penetrate through the rotating grooves (2), a second groove (10) and a third groove (11) are formed in the side wall of each rack, and the third groove (11) are correspondingly fixedly arranged on the bone plates (11).
  2. 2. An implant fixture according to claim 1, wherein the limiting mechanism comprises two sliding plates (20), each sliding plate (20) is fixedly arranged on the side walls of two racks (15), the opposite inner walls of the rectangular grooves (13) are provided with sliding ways (21), and the sliding plates (20) slide in the adjacent sliding ways (21).
  3. 3. The implant fixture according to claim 1, wherein the fixing mechanism comprises a rotating plate (3) and bolts (5), the rotating plate (3) is fixedly arranged at the upper end of the rotating rod (7), the bolts (5) are slidably arranged on the rotating plate (3), the bolts (5) penetrate through the sliding rotating plate (3), four insertion holes (6) are formed in the upper end of the bone plate (1), the insertion holes (6) correspond to the bolts (5), and a reset mechanism for resetting the bolts (5) is arranged in the rotating plate (3).
  4. 4. An implant fixation device according to claim 3, characterized in that the upper end of the bolt (5) is provided with an anti-slip sleeve (4).
  5. 5. An implant fixture according to claim 3, wherein the return mechanism comprises a first spring (9), a first groove (8) is formed in the rotating plate (3), the bolt (5) slides in the first groove (8), one end of the first spring (9) is fixedly arranged on the inner upper wall of the first groove (8), and the other end of the first spring (9) is fixedly arranged on the side wall of the bolt (5).
  6. 6. An implant holding device according to claim 1, wherein the side walls of the cartridge (16) are soft surfaces.
  7. 7. An implant fixture according to claim 1, wherein the slider (18) is mounted on the upper end of the rack (15) on the side close to the block (16).

Description

Implant fixing equipment Technical Field The utility model belongs to the technical field of medical appliances, and particularly relates to implant fixing equipment. Background The biomechanical research of the traditional internal fixation implant focuses on the mechanical coupling mechanism of a bone plate, a bone screw and bone tissue, wherein the bone plate and the bone screw form a rigid lock catch through a preset screw hole, after the screw is anchored into the bone tissue, a load transmission path is established, part of stress is borne by the screw, the other part of stress is transmitted to adjacent bone blocks through a bone-screw interface, and finally, a plate-screw-bone three-level mechanical transmission system is formed, and the stability of the plate-screw-bone three-level mechanical transmission system depends on the synergistic effect of screw pretightening force, bone density and interface friction. In the prior art, various modes have been proposed for an implant fixing device, for example, a patent application with publication number of CN216148177U discloses a plug-in type internal fixing implant, which comprises a bone plate and a plug-in buckle nail, wherein the bone plate and the plug-in buckle nail are integrated, a connecting hole is drilled in bone tissue to be fixed, and the plug-in buckle nail can be inserted into the connecting hole to realize the fixed connection of the bone plate and the bone tissue. The one end that the knot nail was kept away from the bone plate is equipped with first elastic piece, and first elastic piece is the leaf flap form and is equipped with multi-disc and each first elastic piece is all expanded towards the bone plate, and the connecting hole is the setting of reverse T font, but first elastic piece is expanded completely and is blocked into the connecting hole of falling after inserting the connecting hole, because the elastic piece can' T initiatively reset, leads to the knot nail to be difficult to take out from the connecting hole, if take out then needs specialized tool (like expansion pincers or cutterbar) to assist and take out, and then has increased operation complexity and time cost. To this end, the present utility model provides an implant fixation device. Disclosure of utility model In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved. The implant fixing device comprises a bone plate and bone tissues, wherein the lower end of the bone plate is fixedly connected with a bone nail, the inner bottom end of the bone nail is rotationally connected with a gear, two opposite side walls of the bone nail are provided with rectangular grooves, the inner bottom end of the bone nail is slidingly connected with two racks, the racks are meshed with the gear, a limiting mechanism for limiting the racks is arranged in the rectangular grooves, the side walls of the racks are connected with a clamping block through a second spring, the upper end of each rack is fixedly connected with a sliding block, the inner bottom end of each clamping block is provided with a sliding groove, the sliding blocks slide in the adjacent sliding grooves, the upper end of each gear is fixedly connected with a rotating rod, the rotating rod penetrates through the rotating bone plate, the second grooves and the third grooves are respectively arranged in the bone tissues, the clamping blocks correspond to the third grooves, and the upper end of the bone plate is provided with a fixing mechanism for fixing the rotating rod. Preferably, the limiting mechanism comprises two sliding plates, each sliding plate is fixedly arranged on the side walls of the two racks, a sliding way is formed in the opposite inner wall of the rectangular groove, and the sliding plates slide in the adjacent sliding ways. Preferably, the fixing mechanism comprises a rotating plate and bolts, the rotating plate is fixedly arranged at the upper end of the rotating rod, the bolts are slidably arranged on the rotating plate, the bolts penetrate through the sliding rotating plate, four insertion holes are formed in the upper end of the bone plate, the insertion holes correspond to the bolts, and a reset mechanism for resetting the bolts is arranged in the rotating plate. Preferably, the upper end of the bolt is provided with an anti-skid sleeve. Preferably, the reset mechanism comprises a first spring, a first groove is formed in the rotating plate, the bolt slides in the first groove, one end of the first spring is fixedly arranged on the inner upper wall of the first groove, and the other end of the first spring is fixedly arranged on the side wall of the bolt. Preferably, the side wall of the clamping block is a soft surface. Preferably, the sliding block is arranged at the upper end of one side, close to the clamping block, of the rack. The beneficial effects of the utility model are as follows: 1. according to the implant fixing