CN214342550U

CN214342550U - Locking screw for reduction of femoral neck fracture

Info

Publication number: CN214342550U
Application number: CN202023193440.3U
Authority: CN
Inventors: 许庆菊; 赵雅丽; 尤巧娟
Original assignee: SHANGHAI PUWEI MEDICAL APPARATUS FACTORY CO Ltd
Current assignee: SHANGHAI PUWEI MEDICAL APPARATUS FACTORY CO Ltd
Priority date: 2020-12-27
Filing date: 2020-12-27
Publication date: 2021-10-08
Anticipated expiration: 2030-12-27

Abstract

The utility model belongs to the technical field of the locking screw, especially, femoral neck fracture is reset and is used locking screw, the following scheme is proposed at present, including the nut, the inside swing joint of nut has the button, the outer wall fixed connection of hexagon line is fluted, the inside sliding connection of slide rail has the block. The utility model discloses a button that sets up, interior pole, draw the piece, the torsional spring, cardboard and activity spiral shell piece, the process of consolidating to the staple has been accomplished, through the pole in rotating, make the outer wall of activity spiral shell piece in the pole slide, afterwards, the pulling button, the pole removes in the inside of body in the drive, the body removes and drives and draws the piece to stimulate, draw the piece to beat the torsional spring at the pulling in-process, the other end of torsional spring is connected with the cardboard, torsional spring one end receives the pulling back other end and lifts up, it is outside to remove the cardboard to the body, block between staple and the screw, the condition that the screw appears becoming flexible in the use has been solved, reach the purpose of safe handling, the reinforcement effect of screw has been promoted.

Description

Locking screw for reduction of femoral neck fracture

Technical Field

The utility model relates to a locking screw technical field especially relates to a femoral neck fracture is reset and is used locking screw.

Background

The locking screw is used for an internal fixation device for fixing a fracture part, is used independently or combined with a bone fracture plate, is commonly used by cancellous bone screws, cortical bone screws, bone bolts, hollow screws and the like, is applied to stabilizing new fractures, revision surgeries, joint fusion and rebuilding ossicles of feet, ankles and toes, can be used for adult and pediatric patients, has good tensile strength and toughness, is particularly suitable for repairing hard tissue defects of organisms, and needs a locking screw for femoral neck fracture reduction.

The existing locking screw cannot avoid the situation that the screw is loosened after being used for a long time, so that the screw fixation is insecure, the fixing effect is poor, meanwhile, the screwing of the locking screw cannot be adjusted by the depth of the connecting groove, the firm connection degree of screwing equipment and the locking screw cannot be increased, and meanwhile, when the locking screw is taken out, the internal blockage of the locking screw groove cannot be avoided, so that the locking screw is difficult to take out.

Disclosure of Invention

The utility model provides a locking screw for femoral neck fracture resets, the current lock pin screw that exists among the prior art can not avoid the screw to appear not hard up the condition after long-time the use, lead to the fix with screw insecure, the poor problem of fixed effect, and simultaneously, can not move the adjustment that the connecting groove department carries out the degree of depth to twisting of lock pin, can not increase to twist and move the firm in connection degree of equipping with the lock pin, when taking out the lock pin, can't avoid the inside jam of lock pin recess simultaneously, lead to the lock pin to take out the condition problem of difficulty.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a locking screw for femoral neck fracture reduction comprises a screw cap, wherein a button is movably connected inside the screw cap, hexagonal patterns are fixedly connected to the outer wall of the button, a groove is fixedly connected to the outer wall of each hexagonal pattern, a slide rail is arranged on the inner wall of the groove, a clamping block is slidably connected inside the slide rail, a connecting block is fixedly connected to one side of the clamping block, a tension spring is elastically connected to the outer wall of the connecting block, a clamping plate is fixedly connected to the bottom of the connecting block, a slide groove is opened and closed inside the clamping plate, a connecting groove is fixedly connected to one end, away from the connecting block, of the slide groove, a slide rod is slidably connected inside the slide groove, a body is fixedly connected to the bottom of the screw cap, an inner rod is movably connected inside the body, an end, away from the screw cap, of the inner rod is fixedly connected to a pull block, and a torsion spring is movably connected to the outer wall of the pull block, one side of the torsion spring, which is far away from the pulling block, is movably connected with a clamping plate, the bottom of the pulling block is fixedly connected with a movable screw block, and the lower elastic connection of the movable screw block is connected with a damping spring.

Preferably, the central axis of the button coincides with the central axis of the hexagonal pattern, and the button is embedded inside the hexagonal pattern.

Preferably, the slide rail is provided with six, and the slide rail is the equidistance and distributes at the inner wall of recess.

Preferably, the connecting block forms the slip block structure through between slide bar and spout and the spread groove, and the connecting block is symmetrical about the axis of recess between.

Preferably, the inner size of the body is matched with the outer size of the inner rod, and the body is connected with the inner rod in a sliding mode.

Preferably, the movable screw block is in threaded connection with the inner rod, and the clamping plate forms a movable structure with the body through the torsion spring and the pulling block.

In the utility model, the water-saving device is provided with a water-saving valve,

1. the process of reinforcing the lock pin is completed through the arranged button, the inner rod, the pull block, the torsion spring, the clamping plate and the movable screw block, the movable screw block slides on the outer wall of the inner rod by rotating the inner rod, then the button is pulled to drive the inner rod to move in the body, the body moves to drive the pull block to pull, the torsion spring is driven by the pull block in the pulling process, the clamping plate is connected to the other end of the torsion spring, one end of the torsion spring is pulled, the other end of the torsion spring is lifted, the clamping plate is moved to the outside of the body, the lock pin is clamped with the screw hole, the problem that the screw is loosened in the using process is solved, the purpose of safe use is achieved, and the reinforcing effect of the screw is improved;

2. through the hexagon line that sets up, a groove, a slide rail, the block, the connecting block, extension spring, the block board, a sliding groove, spread groove and slide bar, accomplished and carried out the degree of depth to the recess and carried out the process of adjusting, through the inside of screwing up equipment insert nut, screw up the inside block between equipment and the block, it slides in the inside of slide rail to drive the connecting block, it slides in the inside of spout to drive the slide bar in the removal process, later rotate and screw up equipment, make the slide bar block in the inside of spread groove, confirm the degree of depth of recess, the problem of recess inside jam when taking out is solved to the lock nail, reached the convenient purpose of taking to the lock nail, and simultaneously, adjust the degree of depth of recess, make to screw up the inseparabler of being connected between equipment and the lock nail, it is more convenient to install when installing the lock nail.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a locking screw for reduction of femoral neck fracture according to the present invention;

fig. 2 is a schematic front view of a locking screw for reduction of femoral neck fracture according to the present invention;

fig. 3 is a schematic top view of the locking screw for reduction of femoral neck fracture according to the present invention;

fig. 4 is an enlarged schematic structural diagram of a position a in fig. 1 of a locking screw for reduction of femoral neck fracture according to the present invention.

In the figure: 1. a nut; 2. a button; 3. hexagonal lines; 4. a groove; 5. a slide rail; 6. a clamping block; 7. connecting blocks; 8. an extension spring; 9. a clamping plate; 10. a chute; 11. connecting grooves; 12. a slide bar; 13. a body; 14. an inner rod; 15. pulling the block; 16. a torsion spring; 17. clamping a plate; 18. a screw block; 19. a shock absorbing spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a locking screw for femoral neck fracture reduction comprises a nut 1, wherein a button 2 is movably connected inside the nut 1, hexagonal patterns 3 are fixedly connected to the outer wall of the button 2, the central axis of the button 2 coincides with the central axis of the hexagonal patterns 3, and the button 2 is embedded inside the hexagonal patterns 3; the operation is simple and convenient, the use is convenient, and the use requirements of people are met, the outer wall of the hexagonal pattern 3 is fixedly connected with the groove 4, the inner wall of the groove 4 is provided with six sliding rails 5, and the sliding rails 5 are distributed on the inner wall of the groove 4 at equal intervals; the depth of the groove 4 can be stably adjusted, so that the screwing device of the lock nail and the lock nail are connected more tightly and the lock nail can be conveniently taken out in the later period, the inside of the slide rail 5 is connected with the clamping block 6 in a sliding manner, one side of the clamping block 6 is fixedly connected with the connecting block 7, the outer wall of the connecting block 7 is elastically connected with the extension spring 8, the bottom of the connecting block 7 is fixedly connected with the clamping plate 9, the inside of the clamping plate 9 is opened and closed with the slide groove 10, one end of the slide groove 10, far away from the connecting block 7, is fixedly connected with the connecting groove 11, the connecting block 7 forms a sliding clamping structure through the slide rod 12 and between the slide groove 10 and the connecting groove 11, and the connecting block 7 is symmetrical about the central axis of the groove 4; the depth of the groove 4 can be adjusted, the problem that the inside of the groove 4 is blocked by gas substances when a lock pin is taken out, so that the lock pin is difficult to remove is avoided, the inside of the chute 10 is connected with the sliding rod 12 in a sliding mode, the bottom of the nut 1 is fixedly connected with the body 13, the inside of the body 13 is movably connected with the inner rod 14, the inside size of the body 13 is matched with the outside size of the inner rod 14, and the body 13 is connected with the inner rod 14 in a sliding mode; the screw is conveniently and fixedly installed, the firmness of screw fixation is enhanced, one end, away from the screw cap 1, of the inner rod 14 is fixedly connected with a pulling block 15, the outer wall of the pulling block 15 is movably connected with a torsion spring 16, one side, away from the pulling block 15, of the torsion spring 16 is movably connected with a clamping plate 17, the bottom of the pulling block 15 is fixedly connected with a movable screw block 18, the movable screw block 18 is in threaded connection with the inner rod 14, and the clamping plate 17 and the body 13 form a movable structure through the torsion spring 16 and the pulling block 15; can consolidate the screwed connection, reduce the not hard up condition of screw for the function of screw is more complete, and it is safer to use, and the lower elastic connection of activity spiral shell piece 18 has damping spring 19.

The working principle is as follows: when in use, firstly, after the locking nail is installed and when the locking nail is reinforced, the inner rod 14 is rotated to enable the movable screw block 18 to slide on the outer wall of the inner rod 14, then the button 2 is pulled to drive the inner rod 14 to move in the body 13, the body 13 moves to drive the pulling block 15 to pull, the pulling block 15 drives the torsion spring 16 in the pulling process, the other end of the torsion spring 16 is connected with the clamping plate 17, one end of the torsion spring 16 is pulled and the other end is lifted, the clamping plate 17 is moved to the outside of the body 13, the locking nail is clamped with the screw hole, the condition that the locking nail is loosened in the using process is avoided, the use safety of the locking nail is improved, when the locking nail is screwed and is convenient to take the locking nail in the later period, the screwing equipment is inserted into the nut 1, the screwing equipment is clamped with the clamping block 6, the connecting block 7 is driven to slide in the sliding rail 5, the slide bar 12 is driven to slide in the sliding groove 10 in the moving process, then the screwing equipment is rotated, the slide bar 12 is clamped in the connecting groove 11, the depth of the groove 4 is determined, the problem that the locking nail is blocked in the groove 4 when the locking nail is taken out is solved, the purpose of conveniently taking the locking nail is achieved, meanwhile, the depth of the groove 4 is adjusted, and the screwing equipment and the locking nail are connected more tightly.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a femoral neck fracture is reset and is used locking screw, includes nut (1), its characterized in that: the nut is characterized in that a button (2) is movably connected inside the nut (1), hexagonal patterns (3) are fixedly connected to the outer wall of the button (2), a groove (4) is fixedly connected to the outer wall of the hexagonal patterns (3), a slide rail (5) is arranged on the inner wall of the groove (4), a clamping block (6) is slidably connected inside the slide rail (5), a connecting block (7) is fixedly connected to one side of the clamping block (6), a tension spring (8) is elastically connected to the outer wall of the connecting block (7), a clamping plate (9) is fixedly connected to the bottom of the connecting block (7), a sliding groove (10) is opened and closed inside the clamping plate (9), a connecting groove (11) is fixedly connected to one end, far away from the connecting block (7), of the sliding groove (10), a sliding rod (12) is slidably connected inside the sliding groove (10), and a body (13) is fixedly connected to the bottom of the nut (1), and the inside swing joint of body (13) has interior pole (14), the one end fixedly connected with that nut (1) was kept away from in interior pole (14) draws piece (15), and the outer wall swing joint who draws piece (15) has torsional spring (16), one side swing joint that the piece (15) was kept away from in torsional spring (16) has cardboard (17), and draws the bottom fixedly connected with activity spiral shell piece (18) of piece (15), the lower elastic connection of activity spiral shell piece (18) has damping spring (19).

2. A locking screw for reduction of femoral neck fracture according to claim 1, characterized in that: the central axis of the button (2) coincides with the central axis of the hexagonal pattern (3), and the button (2) is embedded in the hexagonal pattern (3).

3. A locking screw for reduction of femoral neck fracture according to claim 1, characterized in that: slide rail (5) are provided with six, and slide rail (5) are the equidistance and distribute at the inner wall of recess (4).

4. A locking screw for reduction of femoral neck fracture according to claim 1, characterized in that: the connecting block (7) forms a sliding clamping structure through the sliding rod (12), the sliding groove (10) and the connecting groove (11), and the connecting block (7) is symmetrical about the central axis of the groove (4).

5. A locking screw for reduction of femoral neck fracture according to claim 1, characterized in that: the inner size of the body (13) is matched with the outer size of the inner rod (14), and the body (13) is connected with the inner rod (14) in a sliding mode.

6. A locking screw for reduction of femoral neck fracture according to claim 1, characterized in that: the movable screw block (18) is in threaded connection with the inner rod (14), and the clamping plate (17) forms a movable structure with the body (13) through the torsion spring (16) and the pulling block (15).