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Tibia prosthesis implanted and fused with tibia-talar joint

A tibial and joint technology, applied in the field of artificial prosthesis replacement, can solve the problems of not taking into account the complexity of the human bone condition, the time-consuming biological fixation, and the slow bone growth time, etc., to achieve convenient surgery, prevent relative movement, The effect of increasing the number of parts

Pending Publication Date: 2021-12-03
河北春立航诺新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, with the long-term follow-up observation after implantation, it is known that the existing tibial prosthesis still has defects. For example, it takes a long time to stabilize the biological fixation after surgery, and it is prone to fracture when the prosthesis is subjected to a large force, causing ankle prosthesis Complications such as displacement and dislocation; in addition, due to the single structure of the existing prosthesis, without considering the complexity of the human bone condition, etc., the bone ingrowth time is slow, and the time to achieve long-term biological fixation is long, etc.

Method used

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  • Tibia prosthesis implanted and fused with tibia-talar joint
  • Tibia prosthesis implanted and fused with tibia-talar joint
  • Tibia prosthesis implanted and fused with tibia-talar joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The purpose of this embodiment is to provide a tibial prosthesis implanted in the fusion tibiotalar joint, according to figure 1 , figure 2 , Figure 5 shown, including

[0047] The tibial medullary pin 1 is used to insert its insertion end into the medullary cavity of the tibial proximal end 3;

[0048] Tibial distal fixation body 2, one end of which is connected with the tibial medullary needle 1, and the other end is connected with the tibial distal end through a locking nail;

[0049] Wherein, the end surface of the distal tibial fixation body 2 near the distal tibia is provided with a protruding post 21 for inserting into the talus 4 .

[0050] In a specific implementation process, the height of the upright column 21 is 10-15 mm, so as to avoid damage to the bone by the prosthesis. The tibial marrow needle 1 is made of non-toxic forged titanium alloy material, which can reduce the toxic damage of the prosthesis to human cells;

[0051] The preparation princip...

Embodiment 2

[0055] A tibial prosthesis implanted and fused into the tibiotalar joint according to Embodiment 1, according to image 3, Figure 5 As shown, the tibial needle 1 includes a needle insertion part 11 and a needle connection part 12 integrally formed therewith. The upper end of the needle connection part 12 is connected with the needle insertion part 11, and the lower end is connected with the tibia. The distal fixation body is connected with 2 cones;

[0056] Wherein, the end of the medullary needle connecting portion 12 close to the distal tibial fixation body 2 is provided with a taper hole 13, and the end of the distal tibial fixation body 2 away from the column 21 is provided with the taper hole 13. The tapered column 22 that is adapted to connect.

[0057] The medullary needle insertion part 11 is used to connect the medullary cavity of the proximal end of the tibia 3, and the reserved length of the backbone and the diameter of the medullary cavity are measured according...

Embodiment 3

[0061] According to a kind of tibial prosthesis of fusion tibiotalar joint described in embodiment two, according to image 3 , Figure 5 As shown, one end of the medullary needle connecting portion 12 close to the distal tibial fixation body 2 is provided with a protruding portion 14 with an arc-shaped cross-section along its circumference;

[0062] The end of the distal tibial fixation body 2 facing away from the column 21 is provided with a recessed part 23 adapted to the protruding part 14 for connecting the medullary nail connection part 12 with the distal tibial fixation body 2 .

[0063] The beneficial effect of above-mentioned technical scheme is:

[0064] The matching design of the protruding part 14 on the medullary needle connecting part 12 and the concave part 23 on the distal tibial fixation body 2 can make the prosthesis assembly more convenient and accurate.

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Abstract

The invention provides a tibia prosthesis implanted and fused with a tibia-talar joint. The tibia prosthesis comprises a tibia bone marrow needle which is used for inserting an insertion end of the tibia bone marrow needle into a medullary cavity at the proximal end of a tibia, and a tibia far-end fixing body of which one end is connected with the tibia bone marrow needle in a conical matching manner, and the other end is connected with the tibia far-end through a locking nail; and a protruding stand column is arranged on the end surface of the side, close to the tibia far-end, of the tibia far end fixing body and used for being inserted into the talus. The tibia prosthesis has the advantages that long-term postoperative biological fixation can be realized, the contact area is large, time required for realizing stable biological fixation is short, and the problems of breakage, displacement, dislocation and the like are not liable to occur.

Description

technical field [0001] The invention relates to the technical field of artificial prosthesis replacement, in particular to a tibial prosthesis implanted and fused into the tibiotalar joint. Background technique [0002] With the maturity of medical technology, prosthetic replacement treatment is becoming more and more common when the human ankle joint is diseased or fractured due to external force. [0003] However, with the long-term follow-up observation after implantation, it is known that the existing tibial prosthesis still has defects. For example, it takes a long time to stabilize the biological fixation after surgery, and it is prone to fracture when the prosthesis is subjected to a large force, causing ankle prosthesis Complications such as displacement and dislocation; in addition, due to the single structure of the existing prosthesis, without considering the complexity of the human bone condition, etc., the bone ingrowth time is slow, and the time to achieve long...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/42
CPCA61F2/4202A61F2002/4205
Inventor 徐凤强史春生荀世界史文超许奎雪康树靖
Owner 河北春立航诺新材料科技有限公司
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