CN213641139U

CN213641139U - Intramedullary cavity inner side supporting structure suitable for strengthening proximal femoral fracture internal fixation

Info

Publication number: CN213641139U
Application number: CN202020565778.8U
Authority: CN
Inventors: 赵滨; 乔俊钊; 鄢承元
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2021-07-09
Anticipated expiration: 2030-04-16

Abstract

The utility model provides an inner side bearing structure of pulp cavity suitable for strengthen nearly section fracture internal fixation of thighbone, including the fixed plate, seted up two at least screw holes on the fixed plate, for the design of locking screw hole, the fixed plate sets up in the inner side of pulp cavity of thighbone and the setting of laminating thighbone medial surface, and the fixed plate through locate the fix with screw in the screw hole soon on the thighbone, the medial surface indicates the one side that is close to in the human thigh side, can carry out single cortex or two cortex to the inboard cortex of thighbone and fix. The problems that the internal fixation strength of the proximal femoral fracture is not enough, the stability is poor and the like are solved. Belongs to the technical field of intertrochanteric fracture repair.

Description

Intramedullary cavity inner side supporting structure suitable for strengthening proximal femoral fracture internal fixation

Technical Field

The utility model provides a medullary cavity medial support structure suitable for strengthen near section fracture internal fixation of thighbone belongs to fracture repair technical field.

Background

At present, fracture of proximal femur (femoral neck, tuberosity) is generally fixed by a sleeve steel plate, an intramedullary nail or a hollow screw, the fixation modes have the defects of insufficient eccentric fixation (such as the sleeve steel plate or a hip sliding compression screw) and stability of proximal femur intramedullary nail (PFNA and the like), the hollow screw is of a separated structure and the like, and the problems that the rotation control of a fracture end is insufficient, the internal fixation is failed and other complications frequently occur, especially the fracture with serious osteoporosis or instability need to be solved.

Disclosure of Invention

The utility model aims to provide a: the utility model provides an inside bearing structure of pulp cavity suitable for proximal femoral fracture internal fixation to solve present proximal femoral fracture internal fixation intensity inadequately, the steadiness subalternation problem.

In order to solve the problems, the intramedullary cavity inner side supporting structure suitable for the proximal femur fracture internal fixation comprises a fixing plate, wherein at least two screw holes are formed in the fixing plate, the fixing plate is designed to be locked by the screw holes and is arranged on the inner side of the femoral medullary cavity and attached to the inner side surface of a femur, the fixing plate is fixed on the femur through screws arranged in the screw holes, the inner side surface is close to one surface in the thigh side of a human body, and single cortex or double cortex fixation can be performed on the inner side cortex of the femur.

The prior internal fixation comprises internal fixation devices which are conventionally used, such as a hip compression screw DHS, a proximal femoral intramedullary nail PFNA, a hollow nail and the like, in an intramedullary cavity inner side support structure for internal fixation of proximal femoral fracture, the fixing plate can be independently arranged at the inner side of a femoral intramedullary cavity, supports the inner side, shares the inner side pressure, lightens the load born by the conventional internal fixation (the hip compression screw DHS, the proximal femoral intramedullary nail PFNA, the hollow nail and the like), and further reduces the failure rate; the fixing plate and the internal fixer can be combined into a whole in a bridging mode to form an integral structure to fix the fracture together.

In the intramedullary canal inner side supporting structure for the internal fixation of proximal femoral fracture, the bridging mode can lead 1 to 3 screws to pass through the internal fixator and the fixing plate to link the two internal fixations into a whole, or lead the two internal fixations to be connected into a whole through materials such as bone cement and the like.

In the intramedullary canal inner side supporting structure for the internal fixation of the proximal femoral fracture, the inner side supporting structure can be made of metal materials which can be implanted into a human body, such as titanium alloy, and can also be made of polymers or plastics which can be implanted into the human body, such as PEEK materials, and is selected according to the fixing strength required by the fracture part.

The fixing plate is arranged on the inner side of a medullary cavity of a proximal femur, the proximal end can reach below a femoral head, the distal end can reach on a femoral condyle, the proper length and position are selected according to a fracture part, the fixing plate is positioned on the inner side of the femur by utilizing the characteristic that a human body load force line is positioned on the inner side of the femur, so that the inner bone is firmer, the steel plate is designed into a locking hole, the proximal end and the distal end of the fracture are respectively fixed by single cortex or double cortex on the inner side of the medullary cavity of the femur, an inner side supporting structure is formed on the proximal femur and is combined with the current internal fixation (hip compression screw DHS, proximal femoral intramedullary nail PFNA, hollow nail and the like) to jointly form organic combination, mutually compensate and mutually reinforce, and the reasonable and strong fixation. The fixing plate can be independently arranged on the inner side of the femoral medullary cavity, supports the inner side, shares the pressure of the inner side, lightens the load born by the conventional inner fixation, and further reduces the failure rate; the fixing plate can be combined with a conventional internal fixator (a hip compression screw DHS, a proximal femoral intramedullary nail PFNA, a hollow nail and the like) into a whole in a bridging mode to form an integral structure for fixing the fracture together. The bridging mode is that 1 to 3 screws can pass through the conventional internal fixator and the fixing plate to link the two internal fixations into a whole, or the two internal fixations are connected into a whole through materials such as bone cement and the like.

Compared with the prior art, the utility model discloses an novelty lies in compliancy human low limbs's mechanical characteristics and dissection characteristic, and thighbone marrow cavity inboard bears pressure, therefore the inboard structure, especially thighbone talus bone intensity is far greater than the outside to can make full use of the inboard firmer sclerotin of thighbone, put into the steel sheet, support and strengthen the internal fixation effect, effectively share the human body to fracture position pressure, improve the internal fixation effect, guarantee the firm support at fracture position.

Drawings

FIG. 1 is a schematic view of the structure of the present invention used alone;

fig. 2 is a schematic structural view of the hip sliding compression screw of the present invention.

Detailed Description

To further clarify the objects, technical solutions and advantages of the present invention, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings.

Example 1:

referring to fig. 1, this embodiment provides an inner side bearing structure of marrow cavity of proximal femoral fracture internal fixation, including fixed plate 1, has seted up two at least screw holes on the fixed plate 1, for the design of locking screw hole, fixed plate 1 sets up in femoral marrow cavity inboard and laminating thighbone medial surface setting, and fixed plate 1 is fixed in on the thighbone through the screw 2 of locating in the screw hole, the medial surface indicates the one side that is close to human thigh side, can carry out single cortex or double cortex to the inboard cortex of thighbone and fix, and this fixed plate 1 can be made with implantable human metal material such as titanium alloy, also can use implantable human polymer or plastics such as PEEK material to make, selects according to the fixed strength that fracture position needs.

The fixing plate 1 is independently arranged at the inner side of a femoral medullary cavity, supports the inner side, shares the pressure of the inner side, lightens the load born by the conventional internal fixation (hip compression screws DHS, proximal femoral intramedullary nails PFNA, hollow nails and the like), and further reduces the failure rate.

Example 2:

referring to fig. 2, this embodiment provides a nearly section fracture internal fixation's of thighbone marrow cavity inboard bearing structure, including fixed plate 1, has seted up two at least screw holes on the fixed plate 1, for the design of locking screw hole, fixed plate 1 sets up in thighbone marrow cavity inboard and laminating thighbone medial surface setting, and fixed plate 1 is fixed in on the thighbone through the screw 2 of locating in the screw hole, the medial surface indicates the one side that is close to human thigh inboard, can carry out single cortex or double cortex to thighbone inboard cortex and fix, and this fixed plate 1 can be made with implantable human metal material such as titanium alloy, also can use implantable human polymer or plastics such as PEEK material to make, selects according to the fixed strength that fracture position needs.

The fixing plate 1 is used together with an internal fixator (conventional internal fixator), the fixing plate 1 and the internal fixator are combined into a whole in a bridging mode to fix the fracture together, as shown in fig. 2, the fixing plate 1 and the hip sliding compression screw 3 are used together, after the fixing plate 1 and the hip sliding compression screw 3 are arranged at designated positions, the two internal fixations are linked into a whole by passing through the hip sliding compression screw 3 and the fixing plate 1 through 1 to 3 connecting screws 4 in the bridging mode, or the two internal fixations are connected into a whole by materials such as bone cement.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an inboard bearing structure of pulp cavity suitable for strengthen near section fracture internal fixation of thighbone which characterized in that: including fixed plate (1), seted up two at least screw holes on fixed plate (1), for the design of locking screw hole, fixed plate (1) set up in femoral medullary cavity inboard and laminating thighbone medial surface setting, and fixed plate (1) is fixed in on the thighbone through screw (2) of locating in the screw hole, the medial surface indicates the one side that is close to in the human thigh side.

2. The medial intramedullary canal support structure adapted for enhanced internal fixation of a proximal femoral fracture according to claim 1, wherein: the fixing plate (1) is matched with the internal fixator for use, and the fixing plate (1) and the internal fixator are fixedly connected in a bridging mode, so that the fixing plate (1) and the internal fixator are combined into a whole to form an integral structure.

3. The medial intramedullary canal support structure adapted for enhanced internal fixation of a proximal femoral fracture according to claim 2, wherein: the fixing plate (1) and the hip sliding compression screw (3) in the internal fixator are used simultaneously, and the two internal fixations are linked into a whole by penetrating the hip sliding compression screw (3) and the fixing plate (1) through 1 to 3 connecting screws (4).

4. The medial intramedullary canal support structure adapted for enhanced internal fixation of a proximal femoral fracture according to claim 2, wherein: the fixing plate (1) and the proximal femoral intramedullary nail in the internal fixator are used simultaneously and fixedly connected into a whole by bone cement poured into a medullary cavity.

5. The medial intramedullary canal support structure adapted for enhanced internal fixation of a proximal femoral fracture according to claim 1, wherein: the fixing plate (1) is made of metal materials, PEEK materials or plastics which can be implanted into a human body, and is selected according to the fixing strength required by the fracture part.