Skin graft preparation apparatus
First Claim
Patent Images
1. A skin graft preparation system allowing varying of a pattern of cuts in skin which is treated thereby, comprising:
- a) a skin graft preparation apparatus having a housing;
b) support means on said housing for supporting roller means;
c) said roller means comprising a guide roller and one of a plurality of cutting rollers, each of said cutting roller comprising an elongated cylindrical body, a multiplicity of spaced annular lands having sharp peripheries and lying in parallel planes, and at least one thread-like continuous groove formed in said body and causing discontinuities in said lands;
d) said plurality of cutting rollers including at least a first cutting roller providing a first pattern of cuts and a second cutting roller providing a second pattern of cuts;
e) said support means supporting said guide roller and one of said cutting rollers;
f) openable cover means on said support means for allowing, in an open position thereof, removal of a said cutting roller and replacement with another of said cutting rollers;
g) carrier means having a continuously flat skin supporting surface for carrying a piece of skin through a gap between said guide roller and said one of a plurality of cutting rollers with said piece of skin facing said one of said plurality of cutting rollers;
h) said piece of skin being advanced through said roller means on said carrier means whereby said one of a plurality of cutting rollers engages said piece of skin to cut a desired pattern of cuts thereon.
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Abstract
A skin graft preparation apparatus is disclosed which includes the use of an extruded skin carrier having guide surfaces thereon which mesh with corresponding guide surfaces on one of the rollers of the apparatus. The device includes structure allowing easy removal, replacement and exchange of the cutter mechanism thereof so that cutters of different ratios may easily be interchanged. Springs engaging respective ends of the cutter mechanism allow slight upward movements thereof to accommodate to skin of varying thickness.
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Citations
15 Claims
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1. A skin graft preparation system allowing varying of a pattern of cuts in skin which is treated thereby, comprising:
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a) a skin graft preparation apparatus having a housing; b) support means on said housing for supporting roller means; c) said roller means comprising a guide roller and one of a plurality of cutting rollers, each of said cutting roller comprising an elongated cylindrical body, a multiplicity of spaced annular lands having sharp peripheries and lying in parallel planes, and at least one thread-like continuous groove formed in said body and causing discontinuities in said lands; d) said plurality of cutting rollers including at least a first cutting roller providing a first pattern of cuts and a second cutting roller providing a second pattern of cuts; e) said support means supporting said guide roller and one of said cutting rollers; f) openable cover means on said support means for allowing, in an open position thereof, removal of a said cutting roller and replacement with another of said cutting rollers; g) carrier means having a continuously flat skin supporting surface for carrying a piece of skin through a gap between said guide roller and said one of a plurality of cutting rollers with said piece of skin facing said one of said plurality of cutting rollers; h) said piece of skin being advanced through said roller means on said carrier means whereby said one of a plurality of cutting rollers engages said piece of skin to cut a desired pattern of cuts thereon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A skin graft preparation apparatus, comprising:
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a) a housing; b) support means on said housing for supporting roller means; c) roller means supported on said support means and comprising a guide roller and a cutting roller; d) openable cover means on said support means for allowing, in an open position thereof, removal and replacement of said cutting roller; e) actuator means for said roller means including an actuator coupled to one of said rollers and drive means drivingly coupling said rollers together whereby rotations of one of said rollers result in rotations of another of said rollers; f) further, wherein said cutting roller comprises one of a plurality of cutting rollers, each of which has a unique cutting pattern thereon and each of said cutting rollers comprising an elongated cylindrical body, a multiplicity of spaced annular lands having sharp peripheries and lying in parallel planes, and at least one thread-like continuous groove formed in said body and causing discontinuities in said lands. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification