阅读说明：本技术 接骨连接装置 (Bone connecting device ) 是由 陈小鲜 黄丽丽 于 2020-05-30 设计创作，主要内容包括：本发明属于医疗器械领域,尤其涉及一种接骨连接装置。该接骨连接装置包括连接钢板,连接钢板内插装有内部中空的连接骨钉,连接骨钉相对于连接钢板周向止转,连接骨钉的底部设有支撑结构,所述支撑结构包括两个相互铰接的支撑爪,所述支撑爪具有承压部和用于卡紧骨骼内壁的支撑头,连接骨钉的内部螺纹连接有锁紧件,所述锁紧件具有顶压头,锁紧件在旋紧状态下其顶压头与支撑爪的承压部顶压配合,使所述支撑爪张开卡紧骨骼的内壁；本发明的接骨连接装置采用杠杆式支撑锁定结构,能够对骨折部位实施有效的固定和支撑,并且能够在患者康复后方便的取出,结构简单,操作便捷,最大程度的减轻了患者的痛苦。(The invention belongs to the field of medical instruments, and particularly relates to a bone connecting device. The bone connecting device comprises a connecting steel plate, a connecting bone nail with a hollow inner part is inserted in the connecting steel plate, the connecting bone nail is circumferentially stopped relative to the connecting steel plate, a supporting structure is arranged at the bottom of the connecting bone nail, the supporting structure comprises two supporting claws which are hinged with each other, each supporting claw is provided with a pressure bearing part and a supporting head for clamping the inner wall of a bone, a locking part is connected with the inner thread of the connecting bone nail through a locking part, the locking part is provided with a pressure pushing head, and the pressure pushing head of the locking part is in press fit with the pressure bearing part of the supporting claw in a screwing state, so that the supporting claw is opened to clamp; the bone connecting device adopts a lever type supporting and locking structure, can effectively fix and support the fracture part, can be conveniently taken out after the patient recovers, has a simple structure, is convenient to operate, and can furthest relieve the pain of the patient.)

1. Coaptation connecting device, including the connecting steel plate, its characterized in that: the connection steel sheet interpolation is equipped with inside hollow connection bone nail, and connection bone nail ends for connection steel sheet circumference, and the bottom of connecting the bone nail is equipped with bearing structure, bearing structure includes two mutual articulated support claws, the support claw has the bearing portion and is used for the support head of chucking skeleton inner wall, and the inside threaded connection of connecting the bone nail has the retaining member, the retaining member has the top pressure head, and its top pressure head of retaining member under the state of screwing makes with the pressure-bearing portion top press fit of support claw the support claw opens the inner wall of chucking skeleton.

2. The bone connection device according to claim 1, characterized in that: the upper surface of the connecting steel plate is vertically provided with two through holes with the same diameter, the upper parts of the two through holes are respectively provided with a limiting groove, the upper part of the connecting bone nail is provided with a limiting bulge which is complementary with the limiting groove in shape, the connecting bone nail is inserted into the through holes of the connecting steel plate in a sliding manner, and the limiting bulge falls into the limiting groove.

3. The bone connection device according to claim 1 or 2, characterized in that: the support claw is hinged to the lower end of the connecting bone nail through a split pin.

4. The bone connection device according to claim 3, characterized in that: the split pin comprises a pin long shaft and a pin shaft sleeve, the pin long shaft is in threaded connection with the pin shaft sleeve, the outer end of the pin long shaft is provided with a long shaft limiting part in rotation stopping limiting fit with the connecting bone nail, and the outer end of the pin shaft sleeve is provided with a shaft sleeve clamping part used for locking the connecting bone nail.

5. The bone connection device according to claim 4, characterized in that: the bottom of connecting the bone nail is equipped with the backup pad that two relative intervals set up, and the interval between two backup pads forms and is used for holding the backup pad recess of support claw, be equipped with in the backup pad and be used for the installation the first pinhole of split type pin, the one end of first pinhole be equipped with split type pin splines complex square groove, the other end of first pinhole be equipped with split type pin chucking complex circular recess.

6. The bone connection device according to claim 1 or 2, characterized in that: the bearing parts of the two supporting claws are hinged with hinged plates, and one ends of the two hinged plates departing from the supporting claws are hinged and connected and are matched with the locking parts in a pressing mode.

7. The bone connection device according to claim 6, characterized in that: the supporting structure further comprises a bearing plate, the two hinge plates are connected in a hinged mode through the bearing plate, and the upper end face of the bearing plate is used for being in press fit with the locking piece.

8. The bone connection device according to claim 7, characterized in that: the two sides of the pressure bearing plate are provided with support lugs which are oppositely arranged at intervals, and the two hinged plates are positioned between the two support lugs.

9. The bone connection device according to claim 1 or 2, characterized in that: the top end of the locking piece is provided with an inner hexagonal groove used for dismounting the locking piece.

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to a bone connecting device.

Background

The skeleton is hard tissue in the human body, the bone cavity is a cavity hole in the bone, such as a long bone represented by femur, and the backbone is hollow and tubular, so the long bone is also called a tubular bone. Fracture is a common clinical case in orthopedics department, and the existing treatment method usually adopts bone screws to match with locking steel plates to complete the connection of fracture parts.

One of the existing bone screw fixing modes is that the traditional thread bone screw is adopted, and the fixation is completed through the connection of the thread on the bone screw and the bone, for example, the Chinese patent with the publication number of CN104887305B discloses a bone screw which is screwed into the bone through a metal thread to realize the fixation, and the technical scheme has the defects that the density of the human bone is low, the connection between the bone and the thread is easy to fail, so that the steel plate fails, and the process of screwing the thread into the bone is easy to cause secondary damage to the bone tissue; secondly, the bone screw is fixed in the human skeleton to complete connection through the particularity of the structure or the material of the bone screw, for example, Chinese patent with the application number of CN201420501522.5 discloses a locking bone screw with an expansion structure, and the bone screw realizes the expansion fixation with a steel plate through the structure of the bone screw; also, for example, chinese patent application No. CN201420444533.4 discloses a memory alloy bone screw, which realizes locking of the bone screw in a butterfly steel plate by changing the shape of the shape memory alloy itself, preventing the bone screw from coming off; no matter the expansion fixation of the structure of the screw or the deformation fixation of the memory alloy of the material of the screw is adopted, the two technical schemes can lead the screw to be still fastened inside the bone tissue after the fracture is recovered, the screw is difficult to take out, and the secondary damage to the bone tissue can be possibly caused.

Disclosure of Invention

According to the defects of the prior art, the invention provides a bone connecting device, which aims to solve the problem that the existing screw is difficult to take out after being fixed on the bone tissue of a human body.

In order to solve the technical problems, the invention adopts the following technical scheme: bone-knitting connecting device, including the binding plate, the binding plate interpolation is equipped with inside hollow connection bone nail, and the connection bone nail is for binding plate circumference stall, and the bottom of connecting the bone nail is equipped with bearing structure, bearing structure includes two mutual articulated support claws, the support claw has the bearing portion and is used for the support head of chucking skeleton inner wall, and the inside threaded connection of connecting the bone nail has the retaining member, the retaining member has the top pressure head, and its top pressure head of retaining member under the state of screwing makes with the bearing portion top press fit of supporting the claw the inner wall of the open chucking skeleton of supporting the claw.

The upper surface of the connecting steel plate is vertically provided with two through holes with the same diameter, the upper parts of the two through holes are respectively provided with a limiting groove, the upper part of the connecting bone nail is provided with a limiting bulge which is complementary with the limiting groove in shape, the connecting bone nail is inserted into the through holes of the connecting steel plate in a sliding manner, and the limiting bulge falls into the limiting groove.

The support claw is hinged to the lower end of the connecting bone nail through a split pin.

The split pin comprises a pin long shaft and a pin shaft sleeve, the pin long shaft is in threaded connection with the pin shaft sleeve, the outer end of the pin long shaft is provided with a long shaft limiting part in rotation stopping limiting fit with the connecting bone nail, and the outer end of the pin shaft sleeve is provided with a shaft sleeve clamping part used for locking the connecting bone nail.

The bottom of connecting the bone nail is equipped with the backup pad that two relative intervals set up, and the interval between two backup pads forms and is used for holding the backup pad recess of support claw, be equipped with in the backup pad and be used for the installation the first pinhole of split type pin, the one end of first pinhole be equipped with split type pin splines complex square groove, the other end of first pinhole be equipped with split type pin chucking complex circular recess.

The bearing parts of the two supporting claws are hinged with hinged plates, and one ends of the two hinged plates departing from the supporting claws are hinged and connected and are matched with the locking parts in a pressing mode.

The supporting structure further comprises a bearing plate, the two hinge plates are connected in a hinged mode through the bearing plate, and the upper end face of the bearing plate is used for being in press fit with the locking piece.

The two sides of the pressure bearing plate are provided with support lugs which are oppositely arranged at intervals, and the two hinged plates are positioned between the two support lugs.

The top end of the locking piece is provided with an inner hexagonal groove used for dismounting the locking piece.

By adopting the technical scheme, the invention has the following beneficial effects: the internal thread is arranged on the connecting bone nail, and the internal thread screwed in the connecting bone nail through the locking part exerts pressure on the bearing part of the supporting structure, so that the supporting plane of the supporting structure compresses the inner wall of the bone, and the locking and fixing of the butt joint bone device are completed. The locking piece is not directly contacted with bone tissues when screwed in, so that the damage to the bone tissues caused by the fact that the threads are directly screwed in and fixed can be effectively avoided; after the affected part of the fracture is recovered, the bolt can be reversely screwed out, the bone nail can be easily taken out and connected, and the secondary injury to the patient when the fracture fixing equipment is taken out is effectively avoided.

The connecting steel plate and the connecting bone nail are provided with the complementary limiting groove and the complementary limiting bulge, so that the connecting steel plate and the connecting bone nail are accurately positioned and reliably connected.

Adopt split type pin to accomplish to connect the bone nail and support being connected of claw, split type pin installation is swift, convenient to use, and is equipped with spacing portion on the split type pin, and this spacing portion is complementary with the square groove shape of connecting the bone nail backup pad, has further increased the reliability of connecting.

The connecting bone nail is movably hinged with the supporting structure, the lever type supporting structure is formed after the locking part is pressed downwards, the supporting structure can support and lock bones only by small acting force, and damage to the bones is reduced.

The pin holes of the support claws hinged with the connecting bone nails are positioned at the upper parts 1/3 of the support claws, so that the support claws have reasonable moving range, and the support structure is convenient to compress and take out.

The bottom edge department of connecting the bone nail is equipped with the direction fillet, and the base of retaining member screw thread shaft section and top pressure head all is equipped with the chamfer structure, can reduce stress concentration, plays the guide effect simultaneously when the installation and avoids the fish tail.

In summary, the following steps: the bone connecting device adopts a lever type supporting and locking structure, can effectively fix and support the fracture part, can be conveniently taken out after the patient recovers, has a simple structure, is convenient to operate, and can furthest relieve the pain of the patient.

Drawings

FIG. 1 is a schematic overall structure of a first embodiment of the bone connecting device of the present invention;

FIG. 2 is an isometric view of a bone connection apparatus of the present invention;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a bottom view of FIG. 2;

FIG. 5 is an isometric view of a connecting steel plate of the present invention;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a sectional view taken along line J-J of FIG. 6;

FIG. 8 is a sectional view taken along line I-I of FIG. 6;

FIG. 9 is an isometric view of a connecting bone screw of the present invention;

FIG. 10 is a front view of FIG. 9;

FIG. 11 is a sectional view taken along line C-C of FIG. 10;

FIG. 12 is a right side view of FIG. 10;

FIG. 13 is a left side view of FIG. 10;

FIG. 14 is an enlarged view of a portion of FIG. 13 at A;

FIG. 15 is a front elevational view of the connecting bone screw showing hidden lines;

FIG. 16 is a schematic view of a support structure of the present invention;

FIG. 17 is a front view of FIG. 16;

FIG. 18 is a schematic view of a support jaw of the present invention;

FIG. 19 is a schematic view of the split pin construction of the present invention;

FIG. 20 is a schematic longitudinal view of a pin of the present invention;

FIG. 21 is a schematic view of a pin sleeve of the present invention;

FIG. 22 is a cross-sectional view of the pin sleeve of the present invention;

FIG. 23 is an isometric view of a retaining member of the present invention;

FIG. 24 is a front view of the retaining member of the present invention;

FIG. 25 is a top view of the retaining member of the present invention;

fig. 26 is a schematic view of a second embodiment of the present invention.

Example 1 corresponds to FIGS. 1-25, in which: 1. connecting steel plates; 1.1, a through hole; 1.2, a limit groove; 2. Connecting the bone nails; 2.1, limiting bulges; 2.2, guiding a fillet; 2.3, a support plate; 2.4, supporting plate grooves; 2.5, a first pin hole; 2.6, a square groove; 2.7, a circular groove; 2.8, a threaded hole; 3. a support structure; 4. a locking member; 4.1, a threaded shaft section; 4.2, pressing the head; 4.3, inner hexagonal grooves; 4.4, chamfering structure; 5. a bone; 5.1, a bone cavity; 6. a support claw; 6.1, a second pin hole; 6.2, a pressure-bearing part; 6.3, supporting the head; 6.4, supporting the plane; 7. split pins; 7.1, a pin long shaft; 7.11, matching the shaft section; 7.12, connecting the shaft section; 7.13, a long shaft limiting part; 7.14, major axis external threads; 7.2, pin shaft sleeves; 7.21, a shaft sleeve clamping part; 7.22, sleeve internal threads.