Trocar device

• US 20020198554A1
• Filed: 03/14/2002
• Published: 12/26/2002
• Est. Priority Date: 03/14/2001
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Whitman, Michael P., Burbank, John P., Guy, Thomas, Hill, Jeremy
• Granted Patent: US 7,905,897 B2
• Time in Patent Office: Days
• US Class Current: 606/167
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 17/3417 Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating syringe needles A61M5/32; dilators A61M29/00
• CPC Class Codes: A61B 17/3476 Powered trocars, e.g. electrosurgical cutting, lasers, powered knives
• CPC Class Codes: A61B 17/3494 with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors for the peridural space A61B17/3401
• CPC Class Codes: A61B 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 2017/349 Trocar with thread on outside
• CPC Class Codes: A61B 2090/062 penetration depth
• CPC Class Codes: A61B 2090/0803 Counting the number of times an instrument is used
• CPC Class Codes: A61B 2090/0805 automatically, e.g. by means of magnetic, optical or photoelectric detectors
• CPC Class Codes: A61B 2090/0806 Instrument detectors with a removable part, e.g. working tip
• CPC Class Codes: A61B 2090/0814 Preventing re-use

Abstract

A surgical device is described. The surgical device may comprise a rotatable cutter configured to cut tissue for insertion of a cannula, and a first driver configured to be driven by a motor arrangement and to rotate the cutter. The surgical device may further include, for example, the cannula, at least one of the rotatable cutter and the first driver being disposed in a bore of the cannula. In one embodiment, the rotatable cutter may include an auger having a cutting thread. In another embodiment, the rotatable cutter may include a disk-shaped blade.

Claims

1. A surgical device, comprising:

a rotatable cutter configured to cut tissue for insertion of a cannula; and

a first driver configured to be driven by a motor arrangement and to rotate the cutter.

2. The surgical device according to claim 1, further comprising:

the cannula, at least one of the rotatable cutter and the first driver being disposed in a bore of the cannula.

3. The surgical device according to claim 2, wherein the cannula is configured to be removed from the device and inserted into the cut tissue,

4. The surgical device according to claim 2, further comprising:

a second driver configured to at least one of extend and retract the cannula relative to the cutter.

5. The surgical device according to claim 4, further comprising:

an electro-mechanical driver including the motor arrangement, the motor arrangement driving the first driver and the second driver.

6. The surgical device according to claim 5, wherein the motor arrangement includes two motors, a first one of the motors driving the first driver, and a second one of the motors driving the second driver.

7. The surgical device according to claim 6, further comprising:

a control system configured to control the motor arrangement.

8. The surgical device according to claim 2, wherein the cannula includes atraumatic threads.

9. The surgical device according to claim 1, further comprising:

a torque sensor configured to sense a torque of the rotatable cutter, the first driver configured to rotate the cutter as a function of the sensed torque.

10. The surgical device according to claim 1, further comprising:

a contact sensor configured to sense contact with the tissue, the first driver rotating the cutter as a function of the sensed contact.

11. The surgical device according to claim 1, further comprising:

a gas sensor configured to sense gas, the first driver configured to rotate the cutter as a function of the sensed gas.

12. The surgical device according to claim 11, wherein the gas sensor is configured to sense CO₂.

13. The surgical device according to claim 1, wherein the first driver is a rotatable drive shaft, the motor configured to rotate the rotatable drive shaft.

14. The surgical device according to claim 1, further comprising:

a coupling configured to detachably couple the first driver to a flexible shaft containing a flexible, rotatable drive shaft.

15. The surgical device according to claim 1, further comprising:

an electro-mechanical driver including the motor arrangement.

16. The surgical device according to claim 1, further comprising:

a memory device configured to store data, the stored data for controlling the surgical device.

17. The surgical device according to claim 16, wherein the data is calibration data.

18. The surgical device according to claim 16, wherein the data provides an indication of a device type.

19. The surgical device according to claim 16, wherein the data includes a serial number.

20. The surgical device according to claim 16, wherein the data includes an indication of usage.

21. The surgical device according to claim 1, wherein the cutter includes a generally disk-shaped blade.

22. The surgical device according to claim 21, wherein the blade includes at least one of a sharp cutting edge and cutting teeth.

23. The surgical device according to claim 21, wherein the first driver includes two drive shafts configured to counter-rotate relative to one another, the two drive shafts configured to rotate the blade.

24. The surgical device according to claim 23, each of the two drive shafts including a respective capstan frictionally engaged with the blade.

25. The surgical device according to claim 16, further comprising:

the cannula, the first driver being disposed in a bore of the cannula.

26. The surgical device according to claim 25, further comprising:

a housing, the first driver being disposed in the housing.

27. The surgical device according to claim 26, wherein the blade is rotatably mounted in the housing.

28. The surgical device according to claim 1, wherein the cutter includes an auger having a cutting thread.

29. The surgical device according to claim 28, further comprising:

the cannula, the cutter being disposed within a bore of the cannula.

30. The surgical device according to claim 29, wherein the cannula is configured to be removed from the device and inserted into the cut tissue.

31. The surgical device according to claim 28, wherein the thread is an atraumatic thread.

32. The surgical device according to claim 28, wherein the auger includes an external auger and an internal auger, the internal auger being disposed within the external auger.

33. A surgical device, comprising:

a cannula having a bore.

a rotatable blade having a generally disk shape, the blade configured to incise tissue for insertion of the cannula; and

a first driver disposed in the bore of the cannula and configured to rotate the blade.

34. The surgical device according to claim 33, wherein the blade includes at least one of a sharp cutting edge and cutting teeth.

35. The surgical device according to claim 33, wherein the first driver includes two drive shafts configured to counter-rotate relative to one another.

36. The surgical device according to claim 35, wherein each of the two drive shafts includes a respective capstan frictionally engaged with the blade.

37. The surgical device according to claim 33, further comprising:

a housing, the first driver being disposed in the housing.

38. The surgical device according to claim 37, wherein the blade is rotatably mounted to the housing.

39. The surgical device according to claim 33, further comprising:

a second driver configured to at least one of extend and retract the cannula relative to the rotatable blade.

40. The surgical device according to claim 33, further comprising:

a coupling configured to detachably couple the first driver to an electro-mechanical driver.

41. A surgical device, comprising:

means for cutting tissue for insertion of a cannula; and

means for rotating the means for cutting tissue, the means for rotating configured to be driven by a motor.

42. A method for operating a surgical device, comprising:

driving a cutter using a motor so that the cutter cuts skin for insertion of a cannula;

inserting a cannula into the cut skin.

43. The method according to claim 42, wherein the inserting step includes extending the cannula into the cut skin using a motor and a driver.

44. A surgical device, comprising:

a cutter configured to cut tissue for insertion of a surgical cannula; and

a memory device storing at least one of identification data and data related to operation of the cutter.

46. The surgical device according to claim 45, wherein the cutter is rotatable, the second drive shaft configured to rotate the cutter.

45. A surgical device, comprising:

a surgical cannula having a bore;

a cutter disposed in the bore of the cannula configured to cut tissue for insertion of the cannula;

a first rotatable drive shaft configured to at least one of extend and retract the cannula; and

a second rotatable drive shaft configured to drive the cutter.