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 head comprising a mechanism for raising at least one blister;
at least one viewing window integrated within said head for monitoring blister formation;
a hollow body having a distal end configured for placement on a skin surface;
at least one plate member integrated within said body comprising at least one hole through which said blister is raised; and
a cutting member integrated in said body for cutting said blister;
wherein said head is configured for removable coupling with said hollow body, said head being further configured for coupling to a vacuum source for generating a negative pressure within the hollow body for forming the blister.
2. The device of claim 1 , wherein said cutting member is a second plate member.
3. The device according to claim 2 , wherein at least one of the plates is movable with respect to the other thereby to perform a cutting action.
4. The device of claim 1 , wherein said viewing window comprises a transparent material.
5. The device of claim 4 , wherein said transparent material is selected from the group consisting of an optical polymer, an optical glass, and an optical crystal.
6. The device according to claim 1 , wherein at least a portion of said viewing window further comprises a magnification lens.
7. The device according to claim 6 , wherein said magnification lens magnifies objects at a magnification ranging from about 2× to about 100×.
8. The device according to claim 6 , wherein at least a portion of said viewing window comprises an ocular shield circumscribing said magnification lens and configured for attenuating entrance of ambient light into said magnification lens.
9. The device according to claim 6 , wherein said viewing window comprises one or more calibration marks calibrated to a magnification power of the lens to indicate one or more dimensions of said at least one blister.
10. The device according to claim 9 , wherein said one or more dimensions comprise any of height, diameter of the blister.
11. The device according to claim 1 , wherein said viewing window comprises one or more materials selected from an anti-fogging material, an anti-scratch coating, and an anti-glare coating.
12. The device according to claim 1 , wherein said viewing window comprises a heat resistant material.
13. The device according to claim 1 , wherein said viewing window comprises one or more calibration marks for monitoring formation of said blister.
14. The device according to claim 1 , further comprising:
a substrate removably coupled to said plate member; and
a substrate compression mechanism movably coupled to said body, said compression mechanism comprising an actuator member coupled to a compression member, whereby actuation of said compression mechanism removably couples said compression member onto said removable substrate;
the device configured such that the blister is attached to the substrate upon cutting said blister.
15. The device according to claim 14 , wherein said compression member is a plate having the same dimension as the substrate.
16. The device according to claim 15 , wherein said compression member plate is coupled to an external portion of said hollow body via a hinge or axle mechanism.
17. The device according to claim 14 , wherein said compression member is cylindrical in shape.
18. The device according to claim 17 , wherein said cylindrical compression member is axially disposed about a movable arm defining a longitudinal axis, whereby lateral movement of said arm rotates the cylindrical member about the longitudinal axis of said arm, and wherein actuation of the movable arm translates into rotational movement of the cylindrical member on the substrate.
19. The device according to claim 14 , wherein said compression member is disposable.
20. The device according to claim 14 , wherein said compression member is reusable.
21. The device according to claim 14 , wherein said compression member is removably coupled to said actuating member.
22. The device according to claim 14 , wherein said compression member is comprised of an elemental metal, a metal alloy, a glass, a crystal, or a polymer.