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Talar Ankle Implant

a technology of ankle implants and talar bones, applied in the field of talar ankle implants, can solve problems such as implant loosening

Pending Publication Date: 2021-11-04
ENCORE MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a component that can be implanted in the talus bone and has edges that can cut through the bone. This component has a seal with the bone to prevent fluid from flowing between the two. The seal may contain a portion of the bone. The component has a bottom surface that faces the bone and has at least one anchor to hold it securely. The component is symmetrical about a central axis and has side walls that taper towards the edges. After implantation, the edges maintain contact with the bone. This design helps to secure the component to the bone and prevent it from moving around.

Problems solved by technology

This clearance could reduce fixation of the implant with the bone, and may allow synovial fluid to seep under the implant, which can result in the loosening of the implant.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0020]In the present disclosure, the term “proximal” generally means closer to the heart and the term “distal” generally means farther away from the heart. The term “posterior” means a position towards the rear of the body and the term “anterior” means a position toward the front of the body. The term “superior” means a position closer to the head and the term “inferior” means a position closer to the feet.

[0021]FIG. 1 illustrates a simplified side view of the bones of the foot and ankle, including the distal tibia 10, the talus 20, and the distal fibula 30. In one example, the distal tibia 10 and the proximal talus 20 may be arthritic and need replacing with a partial or full joint replacement implant. FIG. 2 illustrates an example of a full joint replacement implant 100 including a tibial component 40, a talar component 50, and a mobile bearing 60 (e.g., typically formed of ultra-high molecular weight polyethylene or other plastic) interposed between the tibial and talar component...

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PUM

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Abstract

Methods of implanting a talar component during ankle surgery are provided. A method includes cutting at least medial and lateral cuts in a talus bone. The method includes driving a first self-cutting distal edge of a lateral side wall of the talar component into the lateral cut and a second self-cutting distal edge of a medial side wall of the talar component into the medial cut. A thickness of the lateral sidewall tapers to form the first self-cutting distal edge and a thickness of the medial sidewall tapers to form the second self-cutting edge.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional of, and claims the benefit of the filing date of, U.S. patent application Ser. No. 16 / 137,834, filed Sep. 21, 2018, which claims the benefit of the filing date of U.S. Provisional Application No. 62 / 562,007, filed Sep. 22, 2017, the disclosure of all of which are hereby incorporated by reference herein.BACKGROUND OF THE INVENTION[0002]Ankle pain arises from various conditions including osteoarthritis, post-traumatic arthritis, and rheumatoid arthritis. Generally, a total ankle replacement system, such as S.T.A.R.® or the Scandinavian Total Ankle Replacement System (Howmedica Osteonics, Mahwah, N.J.), includes three components: a first component generally conforming to the talus, a second component generally conforming to the tibia, and a third component being a mobile bearing surface positioned between the first and second components. Such systems may offer a non-cemented implant for replacing a damaged jo...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F2/42A61F2/46A61F2/30
CPCA61F2/4202A61F2002/4207A61F2/30749A61F2310/00179A61F2002/30159A61F2002/30607A61F2002/30131A61F2002/30845A61F2310/00329A61F2002/30227A61F2002/30589A61F2002/30879A61F2002/30904A61F2310/00023A61F2002/30604A61F2/4606
Inventor PAK, CHULHOLORING, THOMAS
Owner ENCORE MEDICAL
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