TUBULAR CUTTER DEVICE AND METHODS FOR CUTTING AND REMOVING STRIPS OF TISSUE FROM THE BODY OF A PATIENT

• US 20120071908A1
• Filed: 06/13/2011
• Published: 03/22/2012
• Est. Priority Date: 06/10/2003
• Status: Abandoned Application

• Current Assignee: Microsurgical Technology Incorporated (Halma PLC)
• Original Assignee: Neomedix Corp.
• Inventors: Sorensen, John T., Mittelstein, Michael, Mirhashemi, Soheila
• Application Number:
  US13/159,356
• Publication Number:
  US 20120071908A1
• Time in Patent Office: Days
• US Class Current: 606/170
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 18/1482 having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
• CPC Class Codes: A61B 2017/320064 with tissue or sample retaining means
• CPC Class Codes: A61B 2018/00083 low, i.e. electrically insulating
• CPC Class Codes: A61B 2018/1497 Electrodes covering only part of the probe circumference
• CPC Class Codes: A61F 9/007 Methods or devices for eye surgery
• CPC Class Codes: A61F 9/00736 Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments A61F9/008 takes precedence
• CPC Class Codes: A61F 9/00781 Apparatus for modifying intraocular pressure, e.g. for glaucoma treatment drainage implants in general A61M27/002
• CPC Class Codes: A61F 9/0079 using non-laser electromagnetic radiation, e.g. non-coherent light or microwaves

Abstract

Methods and devices for cutting strips of tissue from masses of tissue inside or outside of the bodies of human or animal subjects. The device generally comprises a) an elongate cutting tube that has a distal end and a lumen that opens through an opening in the distal end and b) first and second cutting edges formed on generally opposite edges of the distal end of the cutting tube and separated by a distance D. The device is advanced through tissue to cut a strip of tissue of approximate width W. Width W is approximately equal to distance D.

Claims

1. A device for cutting a strip of tissue of approximate width W from a mass of tissue, said device comprising:

an elongate cutting tube having a distal end and a lumen that opens through an opening in the distal end;

first and second cutting edges being formed on generally opposite edges of the distal end of the cutting tube said first and second cutting edges being separated by a distance D;

said cutting tube being advanceable through tissue such that the first and second cutting edges will cut a strip of tissue having approximate width W, said approximate width W being approximately equal to the distance D between the first and second cutting edges.

2. A device according to claim 1 wherein the cutting tube comprises a stainless steel hypodermic tubing.

3. A device according to claim 1 further comprising at least one protruding tip formed on the distal end of the cutting tube.

4. A device according to claim 2 wherein the protruding tip is tapered.

5. A device according to claim 2 wherein the protruding tip is sufficiently blunt to be substantially a traumatic.

6. A device according to claim 1 wherein the first and second cutting edges are located on opposite lateral sides of the distal end of the cutting tube.

7. A device according to claim 4 wherein the first and second cutting edges are located on opposite lateral sides of the distal end of the cutting tube and the protruding tip is located on the bottom of the distal end of the cutting tube.

8. A device according to claim 7 further comprising a blunt edge located at the top of the distal end of the cutting tube.

9. A device according to claim 1 wherein there is a single bend or curve formed in the cutting tube.

10. A device according to claim 9 wherein there is a single bend of approximately 20 degrees to approximately 90 degrees formed in the cutting tube.

11. A device according to claim 10 wherein the bend is approximately 90 degrees.

12. A device according to claim 1 wherein there are a plurality of bends or curves formed in the cutting tube.

13. A device according to claim 12 wherein there are a plurality of bends of approximately 20 degrees to approximately 90 degrees each formed in the cutting tube.

14. A device according to claim 12 wherein there is a first bend of approximately 90 degrees and a second bend of approximately 90 degrees, formed in the tube.

15. A device according to claim 1 further comprising a source of negative pressure connected to the lumen of the cutting tube so as to aspirate fluid or matter through the lumen of the tube.

16. A device according to claim 1 wherein the device further comprises a second lumen.

17. A device according to claim 16 wherein one of the lumens is connected to a source of fluid such that fluid may be infused therethrough and the other of said lumens is connected to a source of negative pressure such that fluid or matter may be aspirated therethrough.

18. A device according to claim 1 wherein at least one of the cutting edges is heated such that it will cauterize as it cuts.

19. A device according to claim 1 further comprising apparatus for severing the strip of tissue when the strip of tissue has reached a desired length.

20. A device according to claim 19 wherein the apparatus for severing the strip of tissue comprises at least one electrode which, when energized, will sever the strip of tissue.

21. A device according to claim 1 wherein the device further comprises:

a second tube that has a lumen and a distal end;

wherein the cutting tube extends through the lumen of the outer tube with a distal portion of the cutting tube extending out of and beyond the distal end of the outer tube.

22. A device according to claim 21 wherein:

the outer diameter of the cutting tube is smaller than the inner diameter of the second tube such that fluid may flow through the lumen of the second tube; and

at least one aperture is formed in the second tube to permit fluid to pass into or out of the lumen of the second tube.