Cryopreserved osteochondral allograft (COCA) transplantation defect sizers and instrument kits
The defect sizer tool and instrument set streamline osteochondral restoration by providing a precise measurement and preparation method for cryopreserved osteochondral allografts, addressing the inefficiencies of current multi-instrument procedures.
WO2026148261A1PCT designated stage Publication Date: 2026-07-09ALLOSOURCE
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ALLOSOURCE
- Filing Date
- 2026-01-05
- Publication Date
- 2026-07-09
AI Technical Summary
Technical Problem
Current osteochondral restoration procedures require multiple surgical instruments that often do not match the size/geometry of the lesion, necessitating significant surgical skill for precise removal of cartilage and bone to receive a graft.
Method used
A defect sizer tool and instrument set combining functions of various surgical instruments, including a pin, pin guide, reamer with adjustable stop, depth guide, and dilator with tamp, to facilitate precise measurement and preparation of a cavity for receiving a cryopreserved osteochondral allograft.
Benefits of technology
Enables precise and efficient creation of a cavity for graft reception, minimizing damage and ensuring a proper fit of the graft, with improved accuracy and reduced procedural time.
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Smart Images
Figure US2026010142_09072026_PF_FP_ABST
Abstract
There is disclosed a defect sizer tool for selection of an appropriately sized pre-cut core for a cryopreserved osteochondral allograft (COCA) transplantation procedure. In an embodiment, the tool includes an elongated connector that provides a handle portion. A ring measurement guide at one end, with a given diameter, and alignable with a cartilage defect to provide an estimated measurement of a diameter. There is disclosed an instrument kit with a pin, a pin guide, and a reamer configured to slidingly receive the pin, blades at one end, and a rotational drive connector at the other end. In an embodiment, a method for a COCA transplantation procedure includes providing an instrument kit, using the pin guide to place the pin in the subchondral bone, and operating the reamer to score surrounding cartilage prior to the reamer bit portion reaming the subchondral bone to the desired depth. Other embodiments are also disclosed.
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