Title:
【発明の名称】関節軟骨の損傷を治療するための装置及び方法
Document Type and Number:
Japanese Patent JPH11501239
Kind Code:
A
Abstract:
A bone plug removal tool is described. The tool includes a cylindrical cutting element having an external surface and having an internal surface defining an internal bore extending along a longitudinal axis of the cutting element from a proximal end to a distal end. A cutting tooth is located at the proximal end of the cutting element and extends into the internal bore. A replaceable outer cylindrical sheath is arranged concentrically around the external surface of the cylindrical cutting element. A bone plug emplacement tool to be used in conjunction the removal tool is also disclosed. The emplacement tool includes a cylindrical element having an internal surface defining an internal bore extending along a longitudinal axis of the element from a proximal end. The internal surface further defines an internal step adjacent a distal end of the element. A stem is disposed for co-axial movement within the element, the stem having a proximal end disposed within the internal bore. A shoulder is defined in the stem for mating engagement with the internal distal step of the element in order to limit distal movement of the stem within the internal bore. A kit incorporating the various tools is disclosed. The kit, for repair of an articular cartilage, includes the bone plug removal tool of the invention, an elongated plunger for insertion into the proximal end of the cutting element and for coaxial movement within it, the plunger for displacing a bone plug from the distal end of cutting element and the bone emplacement tool of the invention. Kits may also include a drill bit containing a depth stop. A method of repairing a defective articular cartilage is also described.
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Inventors:
Heart, Ricky Dee.
Barber, F. Alan
Joe, James Sea.
Barber, F. Alan
Joe, James Sea.
Application Number:
JP52686696A
Publication Date:
February 02, 1999
Filing Date:
February 08, 1996
Export Citation:
Assignee:
Innovative Devices Inc.
International Classes:
A61B17/16; A61B17/32; A61B17/56; A61F2/30; A61F2/46; A61F2/00; A61F2/28; A61F2/38; (IPC1-7): A61B17/16; A61B17/56; A61F2/46
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)