Devices for harvesting a skin graft
View Patent ↗The present invention generally relates to devices for harvesting a skin graft(s). The present invention provides a blister raising device integrated with a member for cutting the blister.
1. A device for obtaining a skin graft, the device comprising:
a hollow body, the body having a distal end configured for placement on skin, the body further adapted to be coupled to a vacuum source, such that a negative pressure can be generated within the device when the body is placed on a donor's skin to raise at least one blister; and
a harvesting member integrated in said body for cutting said blister produced on said skin, the harvesting member comprising a bottom plate, a cutter plate and a top plate, each plate having at least one hole, said holes forming an aligned hole array such that a raised skin blister can be pulled through the holes in each of the plates by the negative pressure, the harvesting member further comprising an actuator for moving the cutter plate to disrupt the alignment of holes and cut the raised blister.
2. The device according to claim 1 , wherein the device further comprises a mechanism selected from the group consisting of a vacuum source for creating suction in said body; a heat source for generating heat in either a patient's body or the body of hollow body of the device; and a combination thereof.
3. The device according to claim 2 , wherein the heat source is a light source.
4. The device according to claim 2 , further comprising a temperature regulator.
5. The device according to claim 1 , further comprising a chamber positioned above the harvesting mechanism.
6. The device according to claim 5 , wherein the chamber comprises a substrate.
7. The device according to claim 1 , further comprising a substrate positioned above the harvesting member.
8. The device according to claim 5 , wherein the chamber is removable.
9. The device according to claim 5 , wherein the chamber is disposable.
10. The device according to claim 5 , wherein the chamber is reusable.
11. A device for obtaining a skin graft, the device comprising
a hollow body having a distal end configured for placement on skin the body further adapted to be coupled to a vacuum source, such that negative pressure can be generated within the device when the body is placed on a donor's skin to raise at least one blister;
a harvesting member integrated in said body for cutting said blister produced on said skin, the harvesting member comprising a bottom plate, a cutter plate and a top plate, each plate having at least one hole, said holes forming an aligned hole array such that a raised skin blister can be pulled through the holes in each of the plates by the negative pressure, the harvesting member further comprising an actuator for moving the cutter plate to disrupt the alignment of holes and cut the raised blister; and
a chamber connected to the body, wherein the device is configured such that upon cutting of the blister, the cut portion of skin enters the chamber and is retained in the chamber.
12. The device according to claim 11 , wherein the chamber is removable.
13. The device according to claim 11 , wherein the chamber is disposable.
14. The device according to claim 11 , wherein the chamber is reusable.
15. The device according to claim 11 , wherein the chamber comprises a substrate.
16. A device for obtaining a skin graft, the device comprising
a hollow body having a distal end configured for placement on skin, the body further adapted to be coupled to a vacuum source, such that negative pressure can be generated within the device when the body is placed on a donor's skin to raise at least one blister;
a harvesting member integrated in said body for cutting said blister produced on said skin, the harvesting member comprising a bottom plate, a cutter plate and a top plate, each plate having at least one hole, said holes forming an aligned hole array such that a raised skin blister can be pulled through the holes in each of the plates by the negative pressure, the harvesting member further comprising an actuator for moving the cutter plate to disrupt the alignment of holes and cut the raised blister; and
a substrate removably connected to the body, wherein the device is configured such that upon cutting of the blister, the cut portion of skin is attached to the substrate.
17. The device according to claim 16 , wherein the substrate comprises an adhesive.