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CN-224220293-U - Biological prosthesis for knee joint

CN224220293UCN 224220293 UCN224220293 UCN 224220293UCN-224220293-U

Abstract

The utility model relates to the technical field of biological prostheses, in particular to a knee joint biological prosthesis which comprises a prosthesis connecting part, wherein the prosthesis connecting part is of a structure with a wide upper part and a narrow lower part, a round groove is formed in the upper end of the prosthesis connecting part, an adjusting device is movably connected in the round groove, four notches are formed in the outer surface of the prosthesis connecting part, supporting devices are movably connected in the four notches, and the four notches are distributed at equal intervals. According to the knee joint biological prosthesis, the four supporting devices are arranged, after the prosthesis connecting part is inserted into the bone of a patient, the twisting end is rotated, the twisting end drives the threaded rod to rotate, the adjusting block in threaded connection with the threaded rod slides upwards in the sliding groove, in the process that the adjusting block moves upwards, the supporting block is jacked up to adjust the angle of the adjusting block, and the supporting block extends out of the prosthesis connecting part after the angle adjustment, so that the prosthesis connecting part is prevented from slipping in the bone.

Inventors

  • Niu Yingzhen
  • DONG JIANGTAO

Assignees

  • 河北医科大学第三医院

Dates

Publication Date
20260512
Application Date
20250102

Claims (6)

  1. 1. The knee joint biological prosthesis comprises a prosthesis connecting part (1) and is characterized in that the prosthesis connecting part (1) is of a structure with a wide upper part and a narrow lower part, a round groove (2) is formed in the upper end of the prosthesis connecting part (1), an adjusting device (3) is movably connected in the round groove (2), four notches (5) are formed in the outer surface of the prosthesis connecting part (1), supporting devices (4) are movably connected in the four notches (5), and the four notches (5) are distributed at equal intervals; The supporting device (4) comprises a supporting block (41), two cavities (42) are formed in the middle of the front end of the supporting block (41), and a connecting shaft (43) is fixedly connected to the right portion of the front end of the supporting block (41) in a penetrating mode.
  2. 2. The knee joint biological prosthesis of claim 1, wherein the connecting shaft (43) is movably connected with the inner wall of the notch (5), the right end of the supporting block (41) is of a cambered surface structure, and the supporting block (41) is of a structure with a narrow upper part and a wide lower part.
  3. 3. The knee joint bioprosthesis according to claim 1, wherein the adjusting device (3) comprises a twisting end (31), a threaded rod (32) is fixedly connected to the lower end of the twisting end (31), and an adjusting block (33) is connected to the lower portion of the outer surface of the threaded rod (32) in a threaded manner.
  4. 4. The knee joint bioprosthesis according to claim 1, wherein the prosthesis connecting portion (1) is internally provided with a chute (11), and the chute (11) is communicated with four notches (5).
  5. 5. The knee joint bioprosthesis of claim 3, wherein the threaded rod (32) is movably connected with the lower groove wall of the chute (11) through a bearing, the adjusting block (33) is positioned at the lower part of the supporting block (41), the adjusting block (33) is in a cross-shaped structure, and the twisting end (31) is positioned in the circular groove (2).
  6. 6. The knee joint bioprosthesis according to claim 1, wherein the support blocks (41) are not in contact with both the upper and lower groove walls of the groove (5).

Description

Biological prosthesis for knee joint Technical Field The utility model relates to the technical field of biological prostheses, in particular to a knee joint biological prosthesis. Background A knee joint bioprosthesis is an artificial implant used to replace a damaged or worn knee joint, intended to mimic the structure and function of a natural knee joint, providing more natural motion and stability. Compared with the traditional metal or plastic prosthesis, the biological prosthesis is generally made of biological materials or bionic materials, has better biocompatibility and motion characteristics closer to a natural knee joint, and the existing knee joint biological prosthesis is usually manufactured by directly inserting a connecting part of the prosthesis into a hole formed in a bone in the installation process, but slipping easily occurs, so that the prosthesis is unstable, and therefore, the knee joint biological prosthesis is pushed out. Disclosure of utility model The main purpose of the utility model is to provide a knee joint biological prosthesis which can effectively solve the problems in the background technology. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The utility model provides a knee joint biological prosthesis, includes the prosthesis connecting portion, the prosthesis connecting portion is wide in the upper end and narrow in the lower, the prosthesis connecting portion upper end is opened there is the circular slot, swing joint has adjusting device in the circular slot, the prosthesis connecting portion surface is opened there are four notch, four equal swing joint has strutting arrangement in the notch, four the notch is the equidistance and distributes. Preferably, the supporting device comprises a supporting block, two cavities are formed in the middle of the front end of the supporting block, and a connecting shaft is fixedly connected to the right part of the front end of the supporting block in a penetrating mode. By adopting the technical scheme, the cavity can facilitate bone growth to enter the cavity, and the stability of the connection between the support block and the bone is improved. Preferably, the connecting shaft is movably connected with the inner wall of the notch, the right end of the supporting block is of a cambered surface structure, and the supporting block is of a structure with a narrow upper part and a wide lower part. Preferably, the adjusting device comprises a twisting end, the lower end of the twisting end is fixedly connected with a threaded rod, and the lower part of the outer surface of the threaded rod is in threaded connection with an adjusting block. Preferably, a sliding groove is formed in the prosthesis connecting part, and the sliding groove is communicated with the four notches. Preferably, the threaded rod is movably connected with the lower groove wall of the sliding groove through a bearing, the adjusting block is positioned at the lower part of the supporting block, the adjusting block is of a cross-shaped structure, and the twisting end is positioned in the circular groove. Preferably, the support block is not in contact with both the upper and lower groove walls of the groove opening. The utility model has the following beneficial effects: According to the utility model, the four supporting devices are arranged, after the prosthesis connecting part is inserted into the bone of a patient, the twisting end is rotated, so that the twisting end drives the threaded rod to rotate, the adjusting block in threaded connection with the threaded rod slides upwards in the sliding groove, in the process of upward movement of the adjusting block, the supporting block is jacked up to adjust the angle of the adjusting block, and the angle of the supporting block is adjusted and then extends out of the prosthesis connecting part, so that the prosthesis connecting part is prevented from slipping in the bone, and by arranging the cavity on the supporting block, bone tissue can conveniently grow into the cavity, and the stability of the supporting block is improved. Drawings FIG. 1 is a schematic view of the overall structure of a knee joint bioprosthesis of the present utility model; FIG. 2 is a schematic representation of the use of the knee joint bioprosthesis of the present utility model; FIG. 3 is a schematic cross-sectional view of a prosthetic joint of the knee joint bioprosthetic of the present utility model; FIG. 4 is a schematic view showing the overall structure of a supporting device of the knee joint bio-prosthesis of the present utility model; Fig. 5 is a schematic view showing the overall structure of an adjusting device of the knee joint bioprosthesis of the present utility model. In the figure, 1, a prosthesis connecting part, 2, a round groove, 3, an adjusting device, 4, a supporting device, 5, a notch, 11, a chute, 31, a twisting end, 32, a threaded rod, 33, an adjusting block,