Systems and methods for harvesting, storing, and implanting hair grafts
A system and method for harvesting, storing, and implanting biological units, in particular hair follicular units (FUs). The system is particularly useful to facilitate hair transplant procedures. FUs are harvested from a body surface, either attached to a patient or in a strip of removed tissue, and shuttled into a cartridge having a plurality of receptacles. The receptacles are open in a distal direction toward a removal tool, but a cover over the proximal ends of the receptacles prevents the FUs from continuing out of the cartridge. One way to shuttle the FUs is to provide a pressure differential, such as by applying suction to the proximal end of a receptacle. The shuttle subsystem may be incorporated within an overall automated or robotic system, or the shuttle subsystem may form part of a semi-automated or even manual apparatus.
1. A device for transplanting biological units into tissue, comprising:
a robotic system having a robotic arm and one or more control mechanisms;
a biological unit removal tool having a lumen therethrough, the removal tool connected to and manipulated by the robotic arm to position the removal tool over the biological unit to be removed from a body;
an implanting tool having a lumen therethrough, the implanting tool being connected to and manipulated by the robotic arm; and
a cartridge having a plurality of receptacles each sized and configured to retain a biological unit,
wherein the one or more control mechanisms is configured to automatically:
(1) align the lumen of the removal tool with a selected cartridge receptacle and urge the biological unit from the removal tool into the selected cartridge receptacle, and
(2) align the selected cartridge receptacle with the lumen of the implanting tool and urge the biological unit from the selected receptacle through the lumen of the implanting tool into the tissue.
2. The device of claim 1 , wherein the cartridge is substantially cylindrical or disk-shaped having a thickness dimension along the direction of the cylindrical axis, and the plurality of receptacles are arrayed in a pattern.
3. The device of claim 1 , further comprising an obturator positioned to pass through the selected cartridge receptacle, and wherein the control mechanism directs passage of the obturator through the selected cartridge receptacle to urge the biological unit from the selected cartridge receptacle.
4. The device of claim 1 , further comprising a pressure differential through the selected cartridge receptacle, and wherein the control mechanism initiates pressure differential through the selected cartridge receptacle to urge the biological unit from the selected cartridge receptacle.
5. The device of claim 1 , wherein the biological unit is a hair graft, and the receptacles are sized to closely receive the hair graft.
6. The device of claim 1 , wherein the biological unit is a skin unit or tissue for grafting.
7. The device of claim 1 , wherein at least one of the plurality of receptacles comprises a pressure relief structure that limits the maximum suction created within the receptacle from a source of suction.
8. The device of claim 7 , wherein the pressure relief structure comprises one or more notches.
9. The device of claim 1 , wherein the cartridge is disposable.
10. The device of claim 1 , wherein the cartridge comprises a permissive medium and is configured to be removably received in a robotic system.
11. The device of claim 1 , wherein at least one receptacle of the plurality of receptacles contains a biological unit preservation solution.
12. A device for transplanting biological units into tissue, comprising:
a robotic system having a robotic arm and one or more control mechanisms;
an implanting tool having a lumen therethrough, the implanting tool being connected to and manipulated by the robotic arm; and
a cartridge having a plurality of receptacles each sized and configured to retain a biological unit and a permissive medium extending over and covering multiple receptacles of the plurality of receptacles,
wherein the one or more control mechanisms is configured to automatically align a selected cartridge receptacle with the lumen of the implanting tool and urge the biological unit from the selected cartridge receptacle through the lumen of the implanting tool into the tissue.
13. An automated process for shuttling a biological unit into and from a cartridge having a plurality of receptacles, comprising:
acquiring a biological unit into a lumen of a removal tool, using a substantially automated process;
urging the biological unit from the lumen of the removal tool into a selected receptacle of the cartridge using a substantially automated process and capturing the biological unit in the selected cartridge receptacle;
displacing the biological unit from the selected cartridge receptacle into a lumen of an implanting tool, using a substantially automated process; and
urging the biological unit from lumen of the implanting tool into a recipient area using a substantially automated process.
14. The process of claim 13 , wherein the step of urging the biological unit through the removal tool comprises applying a pressure differential to the lumen of the removal tool.
15. The process of claim 13 , further comprising reducing the speed of the biological unit along a path from the removal tool to the selected receptacle.
16. The process of claim 13 , wherein the step of urging the biological unit through the implanting tool comprises pushing the biological unit through the lumen of the implanting tool using mechanical means.
17. The process of claim 13 , further comprising cooling the biological unit while it is stored in a cartridge receptacle.
18. The process of claim 13 , further comprising preserving the biological unit while it is stored in the receptacle of the storage device with a preservation solution.
19. The process of claim 13 , wherein the step of acquiring comprises removing the biological unit from one location on a patient body, and the step or urging the biological unit into a recipient area comprises urging the biological unit into a recipient area at another location on the patient body.
20. The process of claim 13 , wherein removal tool and the implanting tool are coupled to a robotic arm, and at least some of the steps of the process are performed utilizing a robotic system.
21. The process of claim 13 , wherein the biological unit is a hair follicular unit, a tissue graft, or a skin graft.