阅读说明：本技术 应用于骨质疏松患者的抗拔出骨科专用螺丝钉及工作方法 (Anti-pull-out orthopedic screw applied to osteoporosis patient and working method ) 是由 邱耀宇 陈春永 谢昀 王发圣 于 2020-07-31 设计创作，主要内容包括：本发明涉及一种应用于骨质疏松患者的抗拔出骨科专用螺丝钉,包括螺丝钉本体,螺丝钉本体的后端为螺母端、前端为旋进端,螺丝钉本体的前端设有经驱动机构驱动伸出螺丝钉本体外周部的卡部。该应用于骨质疏松患者的抗拔出骨科专用螺丝钉的结构简单,伸出螺丝钉本体外周部的卡部使螺丝钉抗拔能力强,不会脱落。(The invention relates to a pull-out-resistant orthopedic screw applied to osteoporosis patients, which comprises a screw body, wherein the rear end of the screw body is a nut end, the front end of the screw body is a screwing-in end, and the front end of the screw body is provided with a clamping part which is driven by a driving mechanism to extend out of the peripheral part of the screw body. The anti-pulling out orthopedic special screw applied to the osteoporosis patient has a simple structure, and the clamping part extending out of the peripheral part of the screw body enables the screw to have strong anti-pulling capacity and not to fall off.)

1. The utility model provides a be applied to osteoporosis patient's anti-extraction orthopedics special screw, includes the screw body, the rear end of screw body is the screw end, front end for advancing end, its characterized in that soon: the front end of the screw body is provided with a clamping part which is driven by the driving mechanism to extend out of the peripheral part of the screw body.

2. The anti-pullout screw specially used for orthopedics department and applied to osteoporosis patients according to claim 1, wherein: the clamping part comprises a plurality of clamping pieces which are uniformly distributed on the front end face of the screw body in a circumferential mode, the inner ends of the clamping pieces are hinged to the front end face, and the outer ends of the clamping pieces are free ends.

3. The anti-pullout screw specially used for orthopedics department and applied to osteoporosis patients according to claim 2, wherein: the driving mechanism comprises a mandrel coaxially arranged in the screw body in a penetrating mode, the rear end of the mandrel extends to the bottom of a hexagon socket hole in the rear end of the screw body, the front end of the mandrel extends to the outside of the front end of the screw body and is fixedly arranged with the center of a rotating piece in three modes, and the rotating piece is formed by radially extending and ejecting rods uniformly distributed on a plurality of circumferences.

4. The anti-pullout screw specially used for orthopedics department and applied to osteoporosis patients according to claim 3, wherein: the rear end of the mandrel is fixedly provided with a head which gradually enlarges from front to back, the rear end face of the head is provided with a straight groove, and the rear end face of the head is flush with the bottom of the inner hexagonal hole.

5. The anti-pullout screw specially used for orthopedics department and applied to osteoporosis patients according to claim 3, wherein: the outer end part of the shooting rod of the rotating piece is hinged with the non-end part of the card on the corresponding side through a thin iron rod.

6. An operating method of a pullout-resistant orthopedic screw for osteoporosis patients according to any one of claims 1-5, comprising the following steps: the special orthopedic screw is screwed into the bone through the hexagon socket hole, so that the front end of the special orthopedic screw is exposed out of the bone; the core shaft is rotated through the straight groove, the core shaft drives the clamping piece to rotate along the inner end hinge point through the rotating piece and the thin iron rod, and the clamping piece extends out of the periphery of the screw body; if osteoporosis, under the screens of card, this screw special for orthopedics can not drop backward, because the nut end of screw body rear end is the major part, also can not drop forward, resistance to plucking can the reinforce.

Technical Field

The invention relates to a pull-out-resistant orthopedic screw applied to osteoporosis patients and a working method thereof.

Background

The orthopedic screw provides anti-pull-out force by virtue of threads, and if osteoporosis occurs, the orthopedic screw is easy to cause tooth loss and fixing failure.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a screw special for anti-pull-out orthopedics department and a working method thereof, wherein the screw is applied to osteoporosis patients.

In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a be applied to osteoporosis patient's resistance to plucking orthopedics special screw, includes the screw body, the rear end of screw body is the nut end, the front end is for advancing the end soon, and the front end of screw body is equipped with the card portion that stretches out screw body peripheral part through the actuating mechanism drive.

Preferably, card portion includes the card of a plurality of circumference equipartitions on the terminal surface before the screw body, and the inner of card all is articulated with preceding terminal surface, and the outer end of card is the free end.

Preferably, the driving mechanism comprises a mandrel coaxially arranged inside the screw body in a penetrating mode, the rear end of the mandrel extends to the bottom of a hexagonal hole in the rear end of the screw body, the front end of the mandrel extends to the outside of the front end of the screw body and is fixedly arranged with the center of a rotating piece in three modes, and the rotating piece is formed by radially extending injection rods uniformly distributed on the periphery of a plurality of pieces.

Preferably, the rear end of the mandrel is fixedly provided with a head which gradually enlarges from front to back, the rear end face of the head is provided with a straight groove, and the rear end face of the head is flush with the bottom of the inner hexagonal hole.

Preferably, the outer end part of the shooting rod of the rotating member is hinged with the non-end part of the corresponding side card through a thin iron rod.

A working method of a screw special for anti-pull-out orthopaedics applied to osteoporosis patients is carried out according to the following steps: the special orthopedic screw is screwed into the bone through the hexagon socket hole, so that the front end of the special orthopedic screw is exposed out of the bone; the core shaft is rotated through the straight groove, the core shaft drives the clamping piece to rotate along the inner end hinge point through the rotating piece and the thin iron rod, and the clamping piece extends out of the periphery of the screw body; if osteoporosis, under the screens of card, this screw special for orthopedics can not drop backward, because the nut end of screw body rear end is the major part, also can not drop forward, resistance to plucking can the reinforce.

Compared with the prior art, the invention has the following beneficial effects: the anti-pulling out orthopedic special screw applied to the osteoporosis patient has a simple structure, and the clamping part extending out of the peripheral part of the screw body plays a role in clamping, so that the screw is strong in anti-pulling capacity and cannot fall off.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural view of the front end face of the screw body.

Fig. 3 is a schematic view of the front end face of the screw body in an operating state.

Fig. 4 is a schematic view of the working state of the screw body.

Detailed Description

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1-4, a screw for anti-pullout orthopedics department for osteoporosis patients comprises a screw body 1, wherein the rear end of the screw body is a nut end 2, the front end of the screw body is a precession end 3, and the front end of the screw body is provided with a clamping part driven by a driving mechanism to extend out of the peripheral part of the screw body.

In the embodiment of the invention, the clamping part comprises a plurality of clamping pieces 4 which are circumferentially and uniformly distributed on the front end surface of the screw body, the inner ends of the clamping pieces are hinged with the front end surface, and the outer ends of the clamping pieces are free ends.

In the embodiment of the invention, the driving mechanism comprises a mandrel 5 coaxially arranged in the screw body in a penetrating way, the rear end of the mandrel extends to the bottom of an inner hexagonal hole 6 at the rear end of the screw body, the front end of the mandrel extends to the outside of the front end of the screw body and is fixedly arranged with the center of three rotary pieces 7, and each rotary piece consists of a plurality of radially extending shooting rods which are uniformly distributed on the circumference.

In the embodiment of the invention, the rear end of the mandrel is fixedly provided with a head 8 which gradually expands from front to back, the rear end surface of the head is provided with a straight groove 9, and the rear end surface of the head is flush with the bottom of the inner hexagonal hole.

In the embodiment of the invention, the outer end parts of the shooting rods of the rotating pieces are hinged with the non-end parts of the corresponding side cards through thin iron rods 10.

In the embodiment of the invention, an end plate 12 is fixedly arranged above the middle part of the rotating piece through the mandrel, the end plate rotates synchronously with the mandrel and the rotating piece, and when the screw body starts to be screwed in, the end plate is used for covering the card which does not extend out, so that the card is protected, and the screwing stability is kept.

A working method of a screw special for anti-pull-out orthopaedics applied to osteoporosis patients is carried out according to the following steps: the special orthopedic screw is screwed into the bone 11 through the hexagon socket hole, so that the front end of the special orthopedic screw is exposed out of the bone; the core shaft is rotated through the straight groove, the core shaft drives the clamping piece to rotate along the inner end hinge point through the rotating piece and the thin iron rod, and the clamping piece extends out of the periphery of the screw body; if osteoporosis, under the screens of card, this screw special for orthopedics can not drop backward, because the nut end of screw body rear end is the major part, also can not drop forward, resistance to plucking can the reinforce.

The invention is not limited to the best embodiment, and other various types of anti-pull-out orthopedic special screws applied to osteoporosis patients and working methods thereof can be obtained by anyone under the teaching of the invention. All equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.