Dermatome with ultrasonic cutting blade
AssigneeDadson Manufacturing Corp.
InventorsJames Raymond Lucas, Mark Loyd Jones, James Earl Alrdrich, Peter Barrett Lucas, Norbert Russ, Shane E. Cowden
Life of this patent
Estimating the term…
Abstract
A dermatome assembly is operable to harvest a skin graft and includes an ultrasonic dermatome and a power supply. The ultrasonic dermatome includes a body and an ultrasonic blade assembly mounted in the body. The blade assembly includes a frequency generator and a cutting horn powered by the frequency generator. The cutting horn is spaced apart from the body so that the body is restricted from damping vibrational movement of the cutting horn. The dermatome assembly is operable to precisely control the thickness of the cut skin graft and also restrict the cutting horn from overheating.
Claims22
An ultrasonic dermatome comprising:
- a body;
- an ultrasonic frequency generator mounted to the body;
- a blade assembly drivingly coupled to the frequency generator so as to be selectively resonated at a natural frequency,
- said blade assembly including a blade element presenting a cutting edge operable to cut A skin graft,
- said blade assembly presenting at least one node spaced from the cutting edge;
- and
- skin-engaging structure spaced adjacent the cutting edge to engage the skin without substantially damping ultrasonic energy transmitted from the ultrasonic frequency generator to the cutting edge,
- said body being in supporting contact with the blade assembly at the at least one node, such that the cutting edge is spaced from the body.
Dependencies are inferred from the claim text.