Trocar device

• US 7,905,897 B2
• Filed: 03/14/2002
• Issued: 03/15/2011
• Est. Priority Date: 03/14/2001
• Status: Expired due to Term

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Burbank, John P., Guy, Thomas, Whitman, Michael P., Hill, Jeremy
• Primary Examiner(s): RAMANA, ANURADHA
• Application Number:
  US10/098,217
• Publication Number:
  US 20020198554A1
• Time in Patent Office: 3,288 Days
• Field of Search: 606/180, 606/80, 606167-173, 606/159, 834/91, 836/76, 833/70, 833/72, 302/76, 301/663, 303/89, 303/88, 302/774, 600566-568, 600/471, 604/22, 409/138
• US Class Current: 606/172
• 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 cannula;

a rotatable cutter configured to cut tissue for insertion of the cannula, the rotatable cutter extending beyond a distal end of the cannula;

a first driver driven by a motor arrangement and to rotate the cutter, at least one of the rotatable cutter and the first driver being entirely disposed in a bore of the cannula; and

a second driver driven by a motor arrangement and to move the cannula to at least one of an extended position and a retracted position, wherein in the extended position the cannula entirely covers the rotatable cutter and in the retracted position the cannula exposes at least a portion of the rotatable cutter.

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

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

3. The surgical device according to claim 2, 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.

4. The surgical device according to claim 3, further comprising:

a control system configured to control the motor arrangement.