CN210962460U

CN210962460U - Artificial knee joint

Info

Publication number: CN210962460U
Application number: CN201920896617.4U
Authority: CN
Inventors: 曾威
Original assignee: Hunan Guohang Health Industry Co ltd
Current assignee: Hunan Guohang Health Industry Co ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-07-10
Anticipated expiration: 2029-06-14

Abstract

The utility model discloses an artificial knee joint belongs to medical instrument technical field, including femoral prosthesis, pad prosthesis and tibial prosthesis, the lower surface of pad prosthesis is provided with connecting lug, the spread groove has been seted up to tibial prosthesis's top, connecting lug block connect in the spread groove, tibial prosthesis's lower fixed surface is connected with the shin bone dead lever, pad prosthesis is located tibial prosthesis's top. The utility model discloses when the installation pad false body, extract the connecting plate, to connect lug insert the spread groove and can install the pad false body, when changing, extract the connecting plate, outwards extract the pad false body and can accomplish the dismantlement, neotype artifical knee joint has simplified the mounting method of pad false body, shortens operating time, reduces patient's misery, and big-end-up's hole of shin bone false body below can be suitable for human tissue to grow, be convenient for biological connection, the clinical long-term connection of reinforcing.

Description

Artificial knee joint

Technical Field

The utility model belongs to the technical field of medical instrument, specifically be an artificial knee joint.

Background

Artificial knee replacement is an effective clinical treatment for injuries to the knee joint caused by trauma or disease. The artificial knee joint system consists of a femoral prosthesis, a spacer prosthesis and a tibial prosthesis. As a biological material applied to the artificial knee joint prosthesis, the biological material not only has good repairing effect, relieves the pain of patients and recovers the functions of the knee joint, but also can not generate adverse effect on the tissues around the knee joint of the human body.

At present, the connection mode between the common cushion prosthesis and the tibia prosthesis in the market is complex, the service life of the cushion prosthesis is limited, the cushion prosthesis is inconvenient to replace or install, and the operation time is prolonged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems that the connection mode between a common liner prosthesis and a tibia prosthesis in the market is complex, the service life of the liner prosthesis is limited, the liner prosthesis is inconvenient to replace or install, and the operation is prolonged, an artificial knee joint is provided.

The utility model adopts the technical scheme as follows:

the utility model provides an artificial knee joint, includes femoral prosthesis, liner prosthesis and tibial prosthesis, liner prosthesis's lower surface is provided with connecting lug, the spread groove has been seted up to tibial prosthesis's top, connecting lug block connect in the spread groove, tibial prosthesis's lower surface fixedly connected with shin bone dead lever, liner prosthesis is located tibial prosthesis's top, tibial prosthesis's front side is seted up the slot, the inside block of slot is connected with the connecting plate, femoral prosthesis locates liner prosthesis's top, femoral prosthesis's inboard fixedly connected with thighbone dead lever.

The outer surface of the femoral prosthesis and the upper surface of the lining prosthesis are both provided with curved surfaces, and the curvatures of the outer surface of the femoral prosthesis and the upper surface of the lining prosthesis are consistent.

The connecting groove and the connecting lug are both trapezoidal, and the connecting groove is matched with the connecting lug.

The inner side surface of the connecting plate is tightly attached to the front side surface of the connecting lug.

The lower surface of the tibia prosthesis is provided with more than ten holes, and each hole is distributed at equal intervals.

The hole is in an inverted circular truncated cone shape, and the diameter of the upper portion of the hole is larger than the diameter of the lower portion of the hole.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, make things convenient for the installation of liner false body or change through setting up connecting lug and spread groove, when installing the liner false body, extract the connecting plate, insert the connecting groove spread groove with connecting lug and can install the liner false body, when changing, extract the connecting plate, outwards extract the liner false body and can accomplish the dismantlement, neotype artifical knee joint has simplified the mounting method of liner false body, shortens the operation time, and it is painful to reduce the patient.

2. The utility model discloses in, help the patient to resume through setting up the hole, big-end-up's hole of tibial prosthesis below can be suitable for human tissue to grow, be convenient for biological connection, reinforcing clinical long-term connection.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

fig. 2 is a side view of the present invention;

fig. 3 is a schematic diagram of the structure of the connection bump and the connection groove of the present invention.

The labels in the figure are: 1. a femoral prosthesis; 2. a cushion prosthesis; 3. a tibial prosthesis; 4. a tibial fixation rod; 5. a connecting plate; 6. a femoral fixation rod; 7. a hole; 8. a slot; 9. connecting grooves; 10. and connecting the bumps.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the 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; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; 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 and fig. 2 and fig. 3, an artificial knee joint includes a femoral prosthesis 1, a spacer prosthesis 2 and a tibial prosthesis 3, a connection protrusion 10 is disposed on a lower surface of the spacer prosthesis 2, a connection groove 9 is disposed above the tibial prosthesis 3, the connection protrusion 10 is connected to the connection groove 9 in a snap-fit manner, a tibial fixing rod 4 is fixedly connected to a lower surface of the tibial prosthesis 3, the spacer prosthesis 2 is disposed above the tibial prosthesis 3, a slot 8 is disposed on a front side of the tibial prosthesis 3, a connection plate 5 is connected to an inner portion of the slot 8 in a snap-fit manner, the femoral prosthesis 1 is disposed above the spacer prosthesis 2, a femoral fixing rod 6 is fixedly connected to an inner side of the femoral prosthesis 1, an outer surface of the femoral prosthesis 1 and an upper surface of the spacer prosthesis 2 are both provided with curved surfaces, a curvature of the outer surface of the, connecting groove 9 and connecting lug 10 looks adaptation, when installing pad prosthesis 2, extract connecting plate 5, after inserting connecting lug 10 into connecting groove 9, insert connecting plate 5 once more, the medial surface of connecting plate 5 is hugged closely in the leading flank of connecting lug 10, can install pad prosthesis 2, when changing, extract connecting plate 5, outwards extract pad prosthesis 2 and can accomplish the dismantlement, neotype artifical knee joint has simplified pad prosthesis's mounting method, shorten the operating time, it is painful to reduce the patient.

Referring to fig. 2 and 3, holes 7 are formed in the lower surface of the tibial prosthesis 3, the number of the holes 7 is more than ten, the holes 7 are distributed at equal intervals, the holes 7 are in an inverted truncated cone shape, the diameter of the upper portion of each hole 7 is larger than that of the lower portion of each hole 7, and the holes 7 with large upper portions and small lower portions below the tibial prosthesis 3 can be suitable for growth of human tissues, biological connection is facilitated, and clinical long-term connection is enhanced.

The working principle is as follows: the utility model discloses when using, punch on patient's thighbone and shin bone earlier, then install thighbone prosthesis 1 and shin bone prosthesis 3, when installing pad prosthesis 2, extract connecting plate 5, insert connecting block 10 behind the spread groove 9, insert connecting plate 5 once more, the medial surface of connecting plate 5 is hugged closely in the leading flank of connecting block 10, can install pad prosthesis 2, when changing, extract connecting plate 5, outwards extract pad prosthesis 2 and can accomplish the dismantlement, neotype artificial knee joint has simplified pad prosthesis's mounting method, shorten the operating time, it is painful to reduce the patient, big-end-up's hole 7 of shin bone prosthesis 3 below can be suitable for human tissue to grow, be convenient for biological connection, strengthen clinical long-term connection.

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. An artificial knee joint comprising a femoral prosthesis (1), a spacer prosthesis (2) and a tibial prosthesis (3), characterized in that: the lower surface of pad prosthesis (2) is provided with connecting lug (10), spread groove (9) have been seted up to the top of tibial prosthesis (3), connecting lug (10) block connect in spread groove (9), the lower fixed surface of tibial prosthesis (3) is connected with shin bone dead lever (4), pad prosthesis (2) are located the top of tibial prosthesis (3), slot (8) have been seted up to the front side of tibial prosthesis (3), the inside block of slot (8) is connected with connecting plate (5), femoral prosthesis (1) are located the top of pad prosthesis (2), the inboard fixedly connected with thighbone dead lever (6) of femoral prosthesis (1).

2. An artificial knee joint according to claim 1, wherein: the outer surface of the femoral prosthesis (1) and the upper surface of the liner prosthesis (2) are both set to be curved surfaces, and the curvatures of the outer surface of the femoral prosthesis (1) and the upper surface of the liner prosthesis (2) are consistent.

3. An artificial knee joint according to claim 1, wherein: the connecting groove (9) and the connecting lug (10) are both trapezoidal, and the connecting groove (9) is matched with the connecting lug (10).

4. An artificial knee joint according to claim 1, wherein: the inner side surface of the connecting plate (5) is tightly attached to the front side surface of the connecting bump (10).

5. An artificial knee joint according to claim 1, wherein: holes (7) are formed in the lower surface of the tibial prosthesis (3), the number of the holes (7) is more than ten, and each hole (7) is distributed at equal intervals.

6. An artificial knee joint according to claim 5, wherein: the hole (7) is arranged to be in an inverted truncated cone shape, and the diameter of the upper portion of the hole (7) is larger than the diameter of the lower portion of the hole (7).