Tool for percutaneous joint cartilage destruction and preparation for joint fusion
First Claim
1. A tool for scrubbing a medullary cavity of a bone or joint cavity, the tool comprising a body comprising:
- (a) a distal section having a scraping surface to scrape a medullary cavity or joint cavity in order to soften tissue within the medullary cavity or joint cavity, wherein the scraping surface is formed on the distal section and comprises a triangular cross section with three edges;
(b) a proximal section having a proximal tip configured to be connectable to a drill;
(c) a cannula extending through the tool; and
(d) an intermediary section between the distal section and the proximal section, the intermediary section connected to the distal section and to the proximal section.
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Accused Products
Abstract
A tool for scrubbing, removing tissue from the medullary cavity or joint cavity of a bone or removing cartilage and/or cortical bone from a joint cavity has a proximal end, a distal end, and a cannula extending therethrough. The distal end includes at least one scraping surface and/or cutting surface to soften marrow in the medullary cavity or joint cavity as the scraping and/or cutting surface(s) are rotated or otherwise moved relative to the medullary cavity or joint cavity. When used, the tool may be attached to a drill and the cannula receives a K-wire previously inserted into the medullary or joint cavity. The drill rotates the tool around the K-wire and pushes the tool over the K-wire into the medullary cavity or joint cavity.
137 Citations
24 Claims
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1. A tool for scrubbing a medullary cavity of a bone or joint cavity, the tool comprising a body comprising:
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(a) a distal section having a scraping surface to scrape a medullary cavity or joint cavity in order to soften tissue within the medullary cavity or joint cavity, wherein the scraping surface is formed on the distal section and comprises a triangular cross section with three edges; (b) a proximal section having a proximal tip configured to be connectable to a drill; (c) a cannula extending through the tool; and (d) an intermediary section between the distal section and the proximal section, the intermediary section connected to the distal section and to the proximal section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A tool for scrubbing a medullary cavity of a bone or joint cavity, the tool comprising a body having:
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(a) a distal section having a scraping surface to scrape a medullary cavity or joint cavity in order to soften tissue within the medullary cavity or joint cavity, wherein the scraping surface is one or more edges of the distal section; (b) a proximal section having a proximal tip configured to be connectable to a drill; (c) a cannula extending through the tool; (d) an intermediary section between the distal section and the proximal section, the intermediary section connected to the distal section and to the proximal section; (e) the distal section further including a distal tip, wherein the distal tip includes at least one cutting surface; and (f) the distal tip narrows in width from the scraping surface to the at least one cutting surface. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification