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CN-122005157-A - Angle-adjustable or expandable multistage anchoring inserting sheet system

CN122005157ACN 122005157 ACN122005157 ACN 122005157ACN-122005157-A

Abstract

The invention discloses an angle-adjustable or expandable multistage anchoring insertion sheet system, which relates to the technical field of medical instruments and comprises a box body, at least one insertion sheet outlet, at least one group of insertion sheet driving mechanisms, at least two insertion sheet assemblies, a secondary anchoring member and a fusion device, wherein the box body is hollow, the upper surface and the lower surface of the box body are respectively provided with at least one insertion sheet outlet, the at least one group of insertion sheet driving mechanisms are arranged in the box body and are used for generating linear driving force, the at least two insertion sheet assemblies are accommodated in the box body in an initial state, and each insertion sheet assembly is in driving connection with the insertion sheet driving mechanisms.

Inventors

  • YAN BAOFENG
  • Yermik Bieshan Buick
  • WU HAO
  • Song Hai Bedler Khan
  • TONG LINGXIAO

Assignees

  • 新疆医科大学第二附属医院

Dates

Publication Date
20260512
Application Date
20260404

Claims (10)

  1. 1. An adjustable angle or deployable multi-stage anchored tab system comprising: The box body (1) is hollow, and at least one inserting sheet outlet (2) is respectively formed in the upper surface and the lower surface of the box body (1); at least one group of inserting sheet driving mechanisms are arranged in the box body (1) and are used for generating linear driving force; at least two insert assemblies which are accommodated in the box body (1) in an initial state, wherein each insert assembly is in driving connection with the insert driving mechanism; each insert assembly comprises a basic anchoring piece (3), wherein the proximal end of the basic anchoring piece (3) is connected with the insert driving mechanism and extends out of the box body (1) from the corresponding insert outlet (2) under the driving of the insert driving mechanism; And at least one adjustable secondary anchor (4) arranged at the distal end of the base anchor (3), the secondary anchor (4) being movable relative to the base anchor (3) to further adjust the anchoring angle or the extent of deployment after the base anchor (3) has been extended to an anchoring position.
  2. 2. The inserting sheet system with adjustable angle or expandable multi-stage anchoring according to claim 1, wherein two clamping rings (5) are arranged on two sides of the far end of the basic anchoring piece (3), a rotating column (6) is movably connected between the two clamping rings (5), one end of the secondary anchoring piece (4) is fixedly connected to the outer annular wall of the rotating column (6), and the secondary anchoring piece (4) swings relative to the basic anchoring piece (3) through the rotating column (6) to adjust the anchoring angle.
  3. 3. The adjustable angle or expandable multistage anchoring tab system according to claim 2, wherein a threaded inner hole (7) is formed in one side of the rotary column (6), and after the secondary anchoring member (4) is adjusted to a predetermined angle, the secondary anchoring member is screwed into the threaded inner hole (7) through a first locking member (8), and an end portion of the first locking member (8) abuts against a corresponding side surface of the clamping ring (5) so as to fix the angular position of the secondary anchoring member (4).
  4. 4. The adjustable angle or expandable multi-stage anchored tab system according to claim 1, wherein the distal end of the foundation anchor (3) is provided with a receiving slot (9), the secondary anchor (4) comprises two expansion wings (401), the root parts of the two expansion wings (401) are fixedly installed in the receiving slot (9), the distal ends of the two expansion wings (401) are gradually opened outwards, opposite surfaces of the two expansion wings (401) are provided with a plurality of butt joint clamping slots (10) which are arranged at intervals along the outline of the two expansion wings, and the two expansion wings are inserted into the butt joint clamping slots (10) at different positions through a plug board (11) to control the opening degree of the two expansion wings (401) and fix the two expansion wings.
  5. 5. The adjustable angle or deployable multi-stage anchored tab system of claim 1, wherein the tab drive mechanism comprises: The screw driving rod (12) is transversely arranged in the box body (1), and two sections of threads with opposite rotation directions are arranged on the screw driving rod (12); Two ball nuts (13) respectively matched with two sections of threads of the threaded driving rod (12); Two sliding blocks (14), wherein each sliding block (14) is fixedly sleeved outside one ball nut (13), and each sliding block (14) is connected with at least one inserting piece assembly; One end of the threaded driving rod (12) is connected with a driving piece (15) for driving the threaded driving rod to rotate.
  6. 6. The angle-adjustable or expandable multistage-anchoring inserting system according to claim 5, wherein one ends of two sliding blocks (14) which are opposite are respectively fixedly connected with a limiting ring (16) which is distributed up and down, an opening is formed in one side of the limiting ring (16), an embedded guide pillar (17) is arranged in the limiting ring (16), the basic anchoring piece (3) is fixedly connected onto the outer wall of the embedded guide pillar (17), a baffle (18) is arranged on the other side of the sliding block (14), a first transverse limiting groove (19) is formed in one side, far away from the baffle (18), of the sliding block (14) and the embedded guide pillar (17), a second annular limiting groove (20) which is distributed in an annular mode is formed in the outer annular wall of the embedded guide pillar (17), and the first limiting groove (19) and the second limiting groove (20) are simultaneously inserted through a positioning plate (21) so as to lock the circumferential position of the embedded guide pillar (17).
  7. 7. The adjustable angle or expandable multistage anchoring tab system according to claim 6, wherein a through hole (22) is formed in a side plate of the box body (1) close to the plug board (11), a cover plate (23) for sealing the through hole (22) is arranged in the through hole, and second locking pieces (24) locked in the box body (1) are arranged on two sides of the cover plate (23).
  8. 8. The adjustable angle or expandable multistage anchored tab system according to claim 1, characterized in that the base anchor (3) and the secondary anchor (4) are made of a resilient titanium alloy material, with saw-tooth like structures on both sides, and that the bottom of each tab outlet (2) is provided with an inclined guide plate (25), which guide plate (25) is used for guiding the tab assembly through the tab outlet (2).
  9. 9. The inserting sheet system with adjustable angle or expandable multi-stage anchoring according to claim 1, wherein bone powder filling holes (26) are symmetrically arranged on the upper surface and the lower surface of the box body (1) respectively, the bone powder filling holes (26) are used for filling bone grafting materials into and around the box body (1) after anchoring is completed, raised structures (27) are further arranged on the upper surface and the lower surface of the box body (1), and the raised structures (27) are located between the two bone powder filling holes (26) and are zigzag ribs distributed on the upper surface and the lower surface of the box body (1) at intervals.
  10. 10. The angle-adjustable or expandable multistage-anchored insertion sheet system according to claim 5, characterized in that the left and right side walls of the sliding block (14) are provided with sliding grooves (28), and the inner opposite side plates of the box body (1) are provided with guide ribs (29) which are mutually matched with the sliding grooves (28); The middle part of screw thread actuating lever (12) is equipped with support ring (30) of rotation connection, the outer wall symmetry of support ring (30) is equipped with vertical backup pad (31), the other end of backup pad (31) is fixed in box body (1).

Description

Angle-adjustable or expandable multistage anchoring inserting sheet system Technical Field The invention relates to the technical field of medical instruments, in particular to an angle-adjustable or expandable multi-stage anchoring insertion sheet system. Background Interbody fusion is a common method of treating degenerative lumbar diseases, intervertebral disc-derived pain, vertebral instability, etc. The fusion cage is implanted in the intervertebral space through surgery, so that the height of the intervertebral space can be restored, mechanical support can be provided, and osseous fusion can be promoted. In order to enhance the initial stability of the fusion device after implantation, to prevent it from slipping or settling within the intervertebral space, a variety of fusion devices with anchoring structures have been developed in the prior art. However, prior art anchor tabs of this type are typically constructed in a pre-designed fixed configuration, such as a sheet having a curvature. When the insertion sheet is pushed out of the fusion device main body, the final anchoring angle and the extension depth of the insertion sheet are determined by a preset mechanical structure and a pushing-out stroke, and the insertion sheet cannot be adjusted in real time according to the specific anatomical form of a patient in the operation process. Because of the obvious individual differences of the curvature, bone density and morphology of the intervertebral disc of different patients, the fixed anchoring insert may not realize optimal bone holding and stress distribution in all cases, and risks of insufficient anchoring force, penetration of the insert through bone cortex or abnormal stress to the end plate exist, so that the personalized adaptation capability of the fusion device and the uniformity of the surgical effect are limited. Disclosure of Invention The invention aims to provide an angle-adjustable or expandable multistage anchoring insertion sheet system, so as to solve the problems that in the prior art, the structure and the movement track of an anchoring insertion sheet are fixed, personalized adjustment cannot be carried out in operation according to the vertebral morphology and bone conditions of a patient, and the adaptation capability of a fusion device to different anatomical morphologies is limited. In order to achieve the above purpose, the invention provides the following technical scheme that the inserting sheet system with adjustable angle or expandable multi-stage anchoring comprises a box body, wherein the box body is hollow, and at least one inserting sheet outlet is respectively arranged on the upper surface and the lower surface of the box body; At least one group of inserting sheet driving mechanisms are arranged in the box body and used for generating linear driving force; At least two insert assemblies which are accommodated in the box body in an initial state, wherein each insert assembly is in driving connection with the insert driving mechanism; Each inserting sheet assembly comprises a basic anchoring piece, wherein the proximal end of the basic anchoring piece is connected with the inserting sheet driving mechanism and extends out of the box body from the corresponding inserting sheet outlet under the driving of the inserting sheet driving mechanism; and at least one adjustable secondary anchor disposed at a distal end of the base anchor, the secondary anchor being movable relative to the base anchor to further adjust an anchor angle or degree of deployment after the base anchor is extended to an anchoring position. Further, two clamping rings are arranged on two sides of the far end of the basic anchoring piece, a rotary column is movably connected between the two clamping rings, one end of the secondary anchoring piece is fixedly connected to the outer annular wall of the rotary column, and the secondary anchoring piece swings relative to the basic anchoring piece through the rotary column to adjust an anchoring angle. Further, a threaded inner hole is formed in one side of the rotary column, after the secondary anchoring piece is adjusted to a preset angle, the secondary anchoring piece is screwed into the threaded inner hole through a first locking piece, and the end portion of the first locking piece abuts against the corresponding side face of the clamping ring so as to fix the angle position of the secondary anchoring piece. Further, a holding groove is formed in the distal end of the foundation anchoring member, the secondary anchoring member comprises two stretching wings, the root parts of the two stretching wings are fixedly installed in the holding groove, the distal ends of the two stretching wings are gradually outwards stretched, a plurality of butt joint clamping grooves which are arranged at intervals along the outline of the two stretching wings are formed in the opposite surfaces of the two stretching wings, and the two stretching wings are inserted into