CN209966531U

CN209966531U - Postoperative auxiliary fixing device for comminuted fracture of femoral head

Info

Publication number: CN209966531U
Application number: CN201920162426.5U
Authority: CN
Inventors: 方兴
Original assignee: Second Peoples Hospital of Hefei
Current assignee: Second Peoples Hospital of Hefei
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2020-01-21
Anticipated expiration: 2029-01-30

Abstract

The utility model discloses an postoperative auxiliary fixing device for comminuted fracture of femoral head, which can wrap and fix the broken bone block of comminuted fracture by arranging a fixing plate at one side of a fixing main needle, and can lead the broken bone block to return correctly, thus leading the surface of the bone to be smooth after healing and preventing the fracture from happening again; the locking needle is directly locked on the fixing main needle, so that the locking needle cannot slide, and the stress acting on the fractured end of the fracture is completely born by the fixing main needle and the locking needle, so that the bone block of the fractured end of the fracture is kept stable, and the complication caused by the re-displacement of the fractured end of the fractured crushed fracture after the operation is reduced; when the tuberosity part of the femur is fractured, the fixing needle of the tuberosity part stretches into the broken part of the femur for fixing, the limit screw screwed into the needle body is adjusted, so that the broken part of the tuberosity part and the femoral head are positioned at an accurate relative distance, the limit screw is fixed through the plug head, accurate positioning is realized, and the shortening of the tuberosity part of the femur is prevented.

Description

Postoperative auxiliary fixing device for comminuted fracture of femoral head

Technical Field

The utility model belongs to the technical field of medical equipment longans, and relates to a fracture fixing device, in particular to an postoperative auxiliary fixing device for comminuted fracture of femoral head.

Background

Fracture is a disease in which bone is partially or completely broken due to trauma or pathology. In the process of treating the fracture, the displaced fracture end needs to be restored to the normal position or close to the original normal position so as to restore the supporting function of the skeleton, and then the fractured part is fixed to promote the complete healing of the skeleton.

At present, the commonly used fixing method for fracture is divided into external fixing and internal fixing, and with the progress of medicine, the fracture is usually fixed by internal fixing, however, in clinical practice, the fracture condition of the bone is various, such as comminuted fracture, the bone is fractured into a plurality of fragments, and the size and the position of the fragments have a plurality of uncertainties, therefore, if the fractured bone can not be fixed and wrapped and the fractured bone can be accurately returned, the fractured bone surface can have uneven traces after the bone is healed, and the traces can induce the fracture again. In addition, for femoral tuberosity fractures, effective fixation is difficult to achieve due to the special biomechanical environment, and the healing failure and deformity healing rate are high, so practical and effective internal fixation is also required.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a supplementary fixing device of postoperative of femoral head comminuted fracture, when wrapping up and fixing the cracked bone piece of comminuted fracture, realize the internal fixation to the fracture of thighbone tuberosity portion.

The purpose of the utility model can be realized by the following technical scheme:

an auxiliary fixing device used after operation for comminuted fracture of femoral head comprises a fixing main needle, wherein a first needle hole is formed in the upper part of the fixing main needle, the fixing main needle is connected with a tuberosity part fixing needle through the first needle hole, two second needle holes are formed in the lower part of the fixing main needle, and the fixing main needle is connected with a locking needle through the second needle holes;

the fixing device is characterized in that screw holes are uniformly distributed in the middle of the fixing main needle, a fixing plate is arranged on one side of the fixing main needle, and the fixing plate is in threaded connection with the screw holes of the fixing main needle through screws.

Further, the cross section of the fixing plate is of a circular arc structure.

Furthermore, locking needle one end is equipped with the barb, the locking needle other end is equipped with the recess.

Furthermore, the tuberosity part fixing needle comprises a hollow needle head, one end of the needle head is inserted with a needle body, and the needle body extends into the femoral tuberosity part;

a limit screw is arranged in the needle head and is screwed into the needle body to be connected with the needle body;

the syringe needle is inside to be protruding style of calligraphy cavity, forms two relative spacing archs at stop screw one side, stop screw opposite side is equipped with the chock plug.

And furthermore, a positioning plate is arranged on one side of the needle head and is attached to the surface of the femoral head.

The utility model has the advantages that: the utility model provides a postoperative auxiliary fixing device for comminuted fracture of femoral head, which can wrap and fix the broken bone block of comminuted fracture by arranging the fixing plate at one side of the fixing main needle, and can lead the broken bone block to be rightly restored, thus leading the surface of the bone to be smooth after healing and preventing the fracture from happening again; the locking needle is directly locked on the fixing main needle, so that the locking needle cannot slide, and the stress acting on the fractured end of the fracture is completely born by the fixing main needle and the locking needle, so that the bone block of the fractured end of the fracture is kept stable, and the complication caused by the re-displacement of the fractured end of the fractured crushed fracture after the operation is reduced; when the tuberosity part of the femur is fractured, the fixing needle of the tuberosity part stretches into the broken part of the femur for fixing, the limit screw screwed into the needle body is adjusted, so that the broken part of the tuberosity part and the femoral head are positioned at an accurate relative distance, the limit screw is fixed through the plug head, accurate positioning is realized, and the shortening of the tuberosity part of the femur is prevented.

Drawings

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

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partial enlarged view of the present invention.

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. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements 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.

As shown in fig. 1, the utility model provides a supplementary fixing device of postoperative of femoral head comminuted fracture, including being used for going on fixed main needle 1 of internal fixation to the thighbone, a first pinhole has been seted up on 1 upper portion of fixed main needle, and fixed main needle 1 is fixed needle 2 through thick eminence portion of first pinhole connection, fixes the fracture of thick eminence portion of thighbone as required, and two second pinholes have been seted up to 1 lower part of fixed main needle, and fixed main needle 1 passes through second pinhole connection locking needle 3, locks fixed main needle.

The middle part of the fixing main needle 1 is uniformly provided with screw holes, one side of the fixing main needle 1 is provided with a fixing plate 4, the fixing plate 4 is in threaded connection with the screw holes of the fixing main needle 1 through screws 41, and broken bone blocks of comminuted fracture are wrapped and fixed through the fixing plate 4, so that the broken bone blocks are correctly reset, the surface of the healed bone is smooth, and the fracture is prevented from happening again. The cross-section of fixed plate 4 is convex structure, effectively increases the laminating area of fixed plate 4 and thighbone outer wall, makes fixed plate 4 can carry out better parcel and fixed to the cracked bone piece of comminuted fracture.

3 one ends of locking needle are equipped with barb 31, prevent that locking needle 3 from moving back the needle because of not hard up slippage, the 3 other ends of locking needle are equipped with recess 32, can part after the nail is gone into the bone, flatten at the bone surface, prevent that locking needle 3 is invaginated, thereby with 3 direct locks of locking needle on fixed main needle 1, make locking needle 3 can not produce and slide, when fixed instability fracture, the stress that acts on the broken end of fracture is born by fixed main needle 1 and locking needle 3 completely, thereby make the bone piece of the broken end of fracture remain stable.

As shown in fig. 2, the tuberosity part fixing needle 2 comprises a hollow needle head 21, a needle body 22 is inserted into one end of the needle head 21, and the needle body 22 extends into the tuberosity part of the femur to fix the fracture of the tuberosity part of the femur. A limit screw 23 is arranged in the needle head 21, and the limit screw 23 is screwed into the needle body 22 to be connected with the needle body 22. The inside type cavity that is protruding of syringe needle 21 forms two relative spacing archs 24 in stop screw 23 one side, prevents that stop screw 23 from driving needle body 22 and move forward, and stop screw 23 opposite side is equipped with chock plug 25, prevents that stop screw 23 from driving needle body 22 and moves backward, realizes the spacing to needle body 22, prevents that patient's activity from leading to needle body 22 to draw close to the thighbone along with the position of breaking, causes the condition that the thighbone tuberosity portion shortened.

A positioning plate 26 is arranged on one side of the needle head 21, and the positioning plate 26 is attached to the surface of the femoral head to position the position and the angle of the tuberosity part fixing needle 2.

When the utility model works, the fixing main needle 1 is nailed into the femoral head to fix the femur internally; then, two locking needles 3 are nailed into the bone and connected in second needle holes of the main fixing needles 1, after the locking needles 3 are nailed into the bone, the edges of the tail grooves of the locking needles 3 are separated and flattened on the outer surface of the bone, so that the locking needles 3 can not slide, and the bone block at the broken end of the fracture is kept stable; when the femur is fractured in a comminuted manner, a fixing plate 4 is arranged on one side of a fixing main needle 1, the fixing plate 4 is fixed in a screw hole of the fixing main needle 1 by using a screw 41, the screw 41 is screwed, and the fractured bone block of the comminuted fracture is wrapped and fixed by the fixing plate 4, so that the fractured bone block is correctly reset, the surface of the bone is flat after the bone is healed, and the fracture is prevented from occurring again; when the femoral tuberosity part is fractured, the positioning plate 26 of the fixing needle 2 of the tuberosity part is connected beside the femoral head, the needle head 21 is inserted into the femoral head, then the needle body penetrating through the needle head 21 extends into the fractured part for fixing, the limiting screw 23 at the rear part of the needle body 22 is screwed in by adjustment, the fractured part of the tuberosity part and the femoral head are positioned at an accurate relative distance, and then the plug 25 connected to the rear end part of the needle head 21 is rotated to fix the limiting screw 23, so that the femoral tuberosity part is accurately positioned and prevented from being shortened.

The utility model provides a postoperative auxiliary fixing device for comminuted fracture of femoral head, which can wrap and fix the broken bone block of comminuted fracture by arranging the fixing plate at one side of the fixing main needle, and can lead the broken bone block to be rightly restored, thus leading the surface of the bone to be smooth after healing and preventing the fracture from happening again; the locking needle is directly locked on the fixing main needle, so that the locking needle cannot slide, and the stress acting on the fractured end of the fracture is completely born by the fixing main needle and the locking needle, so that the bone block of the fractured end of the fracture is kept stable, and the complication caused by the re-displacement of the fractured end of the fractured crushed fracture after the operation is reduced; when the tuberosity part of the femur is fractured, the fixing needle of the tuberosity part stretches into the broken part of the femur for fixing, the limit screw screwed into the needle body is adjusted, so that the broken part of the tuberosity part and the femoral head are positioned at an accurate relative distance, the limit screw is fixed through the plug head, accurate positioning is realized, and the shortening of the tuberosity part of the femur is prevented.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims

1. The utility model provides a supplementary fixing device of postoperative of femoral head comminuted fracture which characterized in that: the needle fixing device comprises a fixing main needle (1), wherein a first needle hole is formed in the upper part of the fixing main needle (1), the fixing main needle (1) is connected with a fixing needle (2) at a thick bulge part through the first needle hole, two second needle holes are formed in the lower part of the fixing main needle (1), and the fixing main needle (1) is connected with a locking needle (3) through the second needle holes;

the fixing device is characterized in that screw holes are uniformly distributed in the middle of the fixing main needle (1), a fixing plate (4) is arranged on one side of the fixing main needle (1), and the fixing plate (4) is in threaded connection with the screw holes of the fixing main needle (1) through screws (41).

2. The postoperative auxiliary fixing device for comminuted fracture of femoral head according to claim 1, characterized in that: the cross section of the fixing plate (4) is of a circular arc structure.

3. The postoperative auxiliary fixing device for comminuted fracture of femoral head according to claim 1, characterized in that: locking needle (3) one end is equipped with barb (31), locking needle (3) other end is equipped with recess (32).

4. The postoperative auxiliary fixing device for comminuted fracture of femoral head according to claim 1, characterized in that: the tuberosity part fixing needle (2) comprises a hollow needle head (21), one end of the needle head (21) is inserted with a needle body (22), and the needle body (22) extends into the femoral tuberosity part;

a limit screw (23) is arranged in the needle head (21), and the limit screw (23) is screwed into the needle body (22) to be connected with the needle body (22);

the novel syringe needle is characterized in that the inside of the syringe needle (21) is a convex-shaped cavity, two opposite limiting bulges (24) are formed on one side of a limiting screw (23), and a plug head (25) is arranged on the other side of the limiting screw (23).

5. The postoperative auxiliary fixing device for comminuted fracture of femoral head according to claim 4, wherein: a positioning plate (26) is arranged on one side of the needle head (21), and the positioning plate (26) is attached to the surface of the femoral head.