TROCAR DEVICE

• US 20110144681A1
• Filed: 02/22/2011
• Published: 06/16/2011
• Est. Priority Date: 03/14/2001
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Burbank, John E., Whitman, Michael P., Guy, Thomas, Hill, Jeremy
• Granted Patent: US 9,192,410 B2
• Time in Patent Office: Days
• US Class Current: 606/172
• CPC Class Codes: A61B 17/3476 Powered trocars, e.g. electrosurgical cutting, lasers, powered knives
• CPC Class Codes: A61B 2017/32006 with a cutting strip, band or chain, e.g. like a chainsaw
• CPC Class Codes: A61B 2017/3409 including needle or instrument drives
• CPC Class Codes: A61B 2017/3458 threaded

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 cannula defining a longitudinal axis;

a rotatable cutter supported within the cannula and being configured to cut tissue for passage of the cannula through the tissue;

at least one driver drivable by a motor arrangement, the at least one driver configured to rotate and translate the rotatable cutter along the longitudinal axis;

at least one sensor assembly configured to sense at least one surgical characteristic of the surgical device during a surgical procedure; and

a controller configured to logically communicate the at least one surgical characteristic between the at least one driver and the at least one sensor assembly.

2. The surgical device according to claim 1, wherein the at least one sensor assembly includes a movable sensing tip extending from a distal end of the rotatable cutter and being configured to activate the at least one driver when the movable sensing tip is moved in a proximal direction relative to the rotatable cutter.

3. The surgical device according to claim 1, wherein the at least one sensor assembly includes a torque sensor configured to sense a torque value of the rotatable cutter, and wherein the controller interprets the torque value received from the torque sensor to thereby control the at least one driver.

4. The surgical device according to claim 3, wherein the controller controls the rotation and translation of the rotatable cutter, via the at least one driver, depending on the torque value.

5. The surgical device according to claim 1, wherein the at least one sensor assembly includes a contact sensor configured to sense contact with the tissue, and wherein the at least one driver rotates the rotatable cutter as a function of the contact sensed by the contact sensor.

6. The surgical device according to claim 1, wherein the at least one sensor assembly includes a gas sensor configured to sense a gas type, and wherein the controller interprets the gas type received from the gas sensor to thereby control the at least one driver.

7. The surgical device according to claim 6, wherein the gas type is CO₂, and wherein when CO₂ is sensed by the gas sensor, the at least one driver is deactivated via the controller.

8. The surgical device according to claim 6, wherein the gas sensor is disposed about a distal portion of the rotatable cutter.

9. The surgical device according to claim 1, wherein the rotatable cutter is configured to move along the length of the cannula and within an internal bore of the cannula.

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

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

11. The surgical device according to claim 1, wherein the rotatable cutter is disposed concentrically within the cannula;

wherein the at least one sensor assembly includes a sensing tip disposed concentrically within a central bore of the rotatable cutter;

wherein a distal end of the sensing tip extends beyond a distal end of the rotatable cutter and is movable in a proximal direction relative to the rotatable cutter to actuate a switch that is connected to the controller; and

wherein actuation of the switch, upon proximal movement of the sensing tip, results in communication of the controller with the at least one driver to commence a rotation of the rotatable cutter.

12. A surgical device, comprising:

a cannula defining a longitudinal axis;

a rotatable cutter supported within the cannula and being configured to cut tissue for passage of the cannula through the tissue;

at least one driver drivable by a motor arrangement, the at least one driver configured to rotate and translate the rotatable cutter along the longitudinal axis;

a movable sensing tip extending from a distal end of the rotatable cutter and being configured to activate the at least one driver when the movable sensing tip is moved in a proximal direction relative to the rotatable cutter; and

a controller configured to provide logical communication between the at least one driver and the movable sensing tip.

13. A surgical device, comprising:

a cannula defining a longitudinal axis;

a rotatable cutter supported within the cannula and being configured to cut tissue for passage of the cannula through the tissue;

at least one driver drivable by a motor arrangement, the at least one driver configured to rotate and translate the rotatable cutter along the longitudinal axis;

a movable sensing tip extending from a distal end of the rotatable cutter and being configured to activate the at least one driver when the movable sensing tip is moved in a proximal direction relative to the rotatable cutter;

a torque sensor configured to sense a torque value of the rotatable cutter, and wherein the controller interprets the torque value received from the torque sensor to thereby control the at least one driver;

a gas sensor configured to sense a gas type, and wherein the controller interprets the gas type received from the gas sensor to thereby control the at least one driver; and

a controller configured to provide logical communication between the at least one driver and at least one of the movable sensing tip, the torque sensor, and the gas sensor.

14. The surgical device according to claim 13, wherein the rotatable cutter is configured to move along the length of the cannula and within an internal bore of the cannula.

15. The surgical device according to claim 13, further comprising:

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

16. The surgical device according to claim 13, wherein the rotatable cutter is disposed concentrically within the cannula;

wherein the movable sensing tip disposed concentrically within a central bore of the rotatable cutter;

wherein a distal end of the movable sensing tip extends beyond a distal end of the rotatable cutter and is movable in a proximal direction relative to the rotatable cutter to actuate a switch that is connected to the controller; and

wherein actuation of the switch, upon proximal movement of the movable sensing tip, results in communication of the controller with the at least one driver to commence a rotation of the rotatable cutter.