CN215019741U

CN215019741U - Femoral prosthesis component and hip joint component

Info

Publication number: CN215019741U
Application number: CN202120251029.2U
Authority: CN
Inventors: 李延磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2021-12-07
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses a femoral prosthesis subassembly and hip joint subassembly, including femoral prosthesis, hip joint subassembly, femoral prosthesis's oblique summit side is provided with hip joint support piece, hip joint support piece keeps away from femoral prosthesis's one end embedding and rotates the surface that is connected with the hip joint subassembly and be provided with the acetabular cup, the location spiral shell groove has been seted up on femoral prosthesis top, a plurality of spacing logical grooves have evenly been seted up to femoral prosthesis's surface, and link up each other between spacing logical groove and the location spiral shell groove. The utility model discloses in, through twisting set screw in the femoral component, twist the in-process of location spiral groove gradually at set screw, set screw can crowd each location tooth piece and move to the outside along spacing logical inslot, after spacing protruding piece embedding on each location tooth piece corresponds spacing inside groove, each location tooth piece is also corresponding stabs soluble membrane of permeating towards the inboard gomphosis of patient's thighbone to be convenient for promote the installation stability of femoral component in the patient.

Description

Femoral prosthesis component and hip joint component

Technical Field

The utility model relates to a femoral prosthesis technical field especially relates to a femoral prosthesis subassembly and hip joint subassembly.

Background

Femur, also known as thigh bone, thigh bone and bar, is the longest tubular bone in the human body. The upper end of the hip joint is a hip joint formed by a femoral head and an acetabulum, the lower end of the hip joint is a knee joint formed by a patella and the upper end of a tibia to support the weight of the whole body, and the hip joint is a ball-and-socket joint which is a typical clubface joint;

at present, after the existing femoral prosthesis component is embedded into a femur in a human body, the situation that the existing femoral prosthesis component is difficult to be embedded tightly is easy to occur, so that the prosthesis is easy to displace in the human body, and in addition, the problem that the hip joint component arranged on the existing femoral prosthesis is easy to have poor mobility caused by insufficient internal lubrication is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects in the prior art and providing a femoral prosthesis component and a hip joint component.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a femoral prosthesis component and a hip joint component comprise a femoral prosthesis and a hip joint component, wherein a hip joint support is arranged on the oblique top side of the femoral prosthesis, an acetabulum cup is arranged on the outer surface of the hip joint component which is embedded and rotatably connected with one end of the hip joint support far away from the femoral prosthesis, a positioning screw groove is arranged at the top end of the femoral prosthesis, a plurality of limiting through grooves are uniformly arranged on the outer surface of the femoral prosthesis, the limiting through grooves are communicated with the positioning screw groove, positioning tooth blocks are embedded and slidably connected into the inner sides of the limiting through grooves, a limiting convex part is arranged on the bottom side of one end of each of the positioning tooth blocks close to the positioning screw groove, a limiting inner groove is arranged on the inner side wall of each positioning screw groove at the position corresponding to the limiting convex part, a fixing screw rod is connected with the positioning screw groove in a threaded manner, and a screw rod head is fixedly connected with the top side of the fixing screw rod, the inner surface of the hip joint component is provided with a plurality of inner ring grooves, and the inner ring grooves surround the outer side of the hip joint support piece.

As a further description of the above technical solution:

the inner ring groove at the bottommost side is communicated with the bottom end of the hip joint component.

As a further description of the above technical solution:

the positioning screw groove is positioned on the inner middle side of the femoral prosthesis.

As a further description of the above technical solution:

the top end of the femoral prosthesis is provided with a storage top groove corresponding to the position of the screw head of the screw, and the screw head of the screw is connected with the storage top groove in an embedded manner.

As a further description of the above technical solution:

a plurality of limiting through grooves are formed in the position, far away from the positioning screw groove, of the port on one side, and are provided with soluble transparent films.

As a further description of the above technical solution:

the femoral prosthesis, the hip joint supporting piece, the fixing screw rod and the screw head of the screw rod are all made of magnesium alloy.

The utility model discloses following beneficial effect has:

1. this thighbone false body subassembly and hip joint subassembly, through twist the clamping screw in the thighbone false body, at the in-process that clamping screw twisted gradually in the location thread groove, clamping screw can crowd each location tooth piece and move to the outside along spacing logical groove, after in the spacing protruding piece embedding on each location tooth piece corresponds spacing inside groove, each location tooth piece is also corresponding to puncture soluble permeable membrane towards the inboard gomphosis of patient's thighbone to be convenient for promote the installation stability of thighbone false body in the patient.

2. According to the femoral prosthesis component and the hip joint component, tissue fluid in a human body can easily infiltrate into a gap between the hip joint component and the femoral prosthesis through the inner ring groove and gather in the inner ring groove, so that the effect of lubricating the hip joint component and the hip joint support piece for a long time is achieved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of the fitting structure of the femoral prosthesis and the fixing screw according to the present invention;

fig. 4 is a schematic structural diagram of a position a of the present invention.

Illustration of the drawings: 1. a femoral prosthesis; 2. a hip joint support; 3. a hip joint assembly; 4. an acetabular cup; 5. positioning a screw groove; 6. a storage top groove; 7. a limiting through groove; 8. a soluble permeant membrane; 9. limiting the inner groove; 10. positioning a tooth block; 11. a limiting convex part; 12. fixing the screw rod; 13. a screw head of the screw; 14. an inner ring groove.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: a femoral prosthesis component and a hip joint component comprise a femoral prosthesis 1 and a hip joint component 3, wherein a hip joint support 2 is arranged on the oblique top side of the femoral prosthesis 1, an acetabulum cup 4 is arranged on the outer surface of the hip joint component 3 which is embedded and rotatably connected with one end of the hip joint support 2 away from the femoral prosthesis 1, a positioning screw groove 5 is arranged at the top end of the femoral prosthesis 1, a plurality of limiting through grooves 7 are uniformly arranged on the outer surface of the femoral prosthesis 1, the limiting through grooves 7 are communicated with the positioning screw groove 5, positioning tooth blocks 10 are slidably connected with the inner sides of the limiting through grooves 7 in an embedded manner, a limiting convex part 11 is arranged on the bottom side of one end of each positioning tooth block 10 close to the positioning screw groove 5, a limiting convex part 9 is arranged on the inner side wall of the positioning screw groove 5 corresponding to the position of the limiting convex part 11, a fixing screw rod 12 is connected with the positioning screw groove 5 in a threaded manner, and a screw rod head 13 is fixedly connected with the top side of the fixing screw rod 12, the inner surface of the acetabular cup 4 is provided with a plurality of inner annular grooves 14, and the inner annular grooves 14 surround the outer side of the hip joint support 2.

The inner ring groove 14 at the bottommost side is communicated with the bottom end of the hip joint component 3, so that tissue fluid in the human body can easily permeate into a gap between the hip joint component 3 and the femoral prosthesis 1; the positioning screw groove 5 is positioned on the middle side in the femur prosthesis 1, and the adverse effect of slotting on the overall structure stability of the femur prosthesis 1 can be greatly reduced by arranging the positioning screw groove 5 on the middle side in the femur prosthesis 1; the top end of the femoral prosthesis 1 is provided with a storage top groove 6 corresponding to the position of the screw head 13, and the screw head 13 is embedded and connected with the storage top groove 6, so that the screw head 13 is prevented from protruding and extending to the outer side of the femoral prosthesis 1; the ports of one side of the limiting through grooves 7, which are far away from the positioning screw grooves 5, are provided with the soluble permeable membranes 8, so that the positioning tooth blocks 10 can be prevented from moving to the outer sides of the limiting through grooves 7 when the fixing screws 12 are not screwed into the positioning screw grooves 5, and the embedded installation of the femoral prosthesis 1 is prevented from being influenced; the materials of the femoral prosthesis 1, the hip joint support 2, the fixing screw 12 and the screw head 13 are magnesium alloy, the magnesium alloy is a metal material with the best biomechanical compatibility with human skeleton, the density of the magnesium alloy is close to that of the human skeleton, the discomfort after the magnesium alloy is implanted into the human body is far lower than that of stainless steel, titanium alloy and the like, the magnesium alloy can be absorbed by the human body, and the released magnesium ions can promote the proliferation and differentiation of bone cells and promote the growth and healing of the bone.

The working principle is as follows: when a femoral prosthesis component and a hip joint component are used, firstly, the femoral prosthesis 1 is embedded into a designated position of a femur of a patient, then a fixing screw 12 is screwed into a positioning screw groove 5 of the femoral prosthesis 1, in the process that the fixing screw 12 is gradually screwed into the positioning screw groove 5, the fixing screw 12 can push each positioning tooth block 10 to move to the outer side along a limiting through groove 7, after a limiting convex part 11 on each positioning tooth block 10 is embedded into a corresponding limiting inner groove 9, each positioning tooth block 10 correspondingly breaks a soluble permeable membrane 8 and is embedded towards the inner side of the femur of the patient, so that the installation stability of the femoral prosthesis 1 in the patient is improved, tissue fluid in the human body can more easily permeate into a gap between the hip joint component 3 and the femoral prosthesis 1 through an inner ring groove 14 and can be gathered in the inner ring groove 14, and a durable lubricating effect can be conveniently achieved between the hip joint component 3 and the hip joint support 2, has certain practicability.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims

1. The utility model provides a femoral prosthesis subassembly and hip joint subassembly, includes femoral prosthesis (1), hip joint subassembly (3), its characterized in that: a hip joint support (2) is arranged on the oblique top side of the femoral prosthesis (1), an acetabulum cup (4) is arranged on the outer surface of a hip joint component (3) which is embedded and rotatably connected with one end, away from the femoral prosthesis (1), of the hip joint support (2), a positioning screw groove (5) is formed in the top end of the femoral prosthesis (1), a plurality of limiting through grooves (7) are uniformly formed in the outer surface of the femoral prosthesis (1), the limiting through grooves (7) are communicated with the positioning screw groove (5), positioning tooth blocks (10) are slidably connected with the inner sides of the limiting through grooves (7) in an embedded manner, a limiting convex part (11) is arranged on the bottom side of one end, close to the positioning screw groove (5), of each positioning tooth block (10), a limiting inner groove (9) is formed in the position, corresponding to the limiting convex part (11), of the inner side wall of each positioning screw groove (5) is in threaded connection with a fixing screw rod (12), the top side of the fixing screw rod (12) is fixedly connected with a screw rod screw head (13), the inner surface of the hip joint component (3) is provided with a plurality of inner ring grooves (14), and the inner ring grooves (14) surround the outer side of the hip joint support piece (2).

2. The femoral prosthetic component and the hip joint component of claim 1, wherein: the inner ring groove (14) at the bottommost side is communicated with the bottom end of the hip joint component (3).

3. The femoral prosthetic component and the hip joint component of claim 1, wherein: the positioning screw groove (5) is positioned on the inner middle side of the femoral prosthesis (1).

4. The femoral prosthetic component and the hip joint component of claim 1, wherein: the top end of the femoral prosthesis (1) is provided with a storage top groove (6) corresponding to the position of the screw head (13), and the screw head (13) is connected with the storage top groove (6) in an embedded manner.

5. The femoral prosthetic component and the hip joint component of claim 1, wherein: a plurality of limiting through grooves (7) are provided with soluble permeable membranes (8) at the ports of one side far away from the positioning screw grooves (5).

6. The femoral prosthetic component and the hip joint component of claim 1, wherein: the femoral prosthesis (1), the hip joint supporting piece (2), the fixing screw (12) and the screw head (13) are all made of magnesium alloy.