VISUALIZED ENTRY TROCAR WITH MOVING BLADE

• US 20100048994A1
• Filed: 04/04/2008
• Published: 02/25/2010
• Est. Priority Date: 04/11/2007
• Status: Abandoned Application

• Current Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Okoniewski, Gregory G.
• Application Number:
  US12/594,609
• Publication Number:
  US 20100048994A1
• Time in Patent Office: Days
• US Class Current: 600/109
• 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 17/3496 Protecting sleeves or inner probes; Retractable tips for protecting body piercing guide needles A61M25/0612
• CPC Class Codes: A61B 2017/32006 with a cutting strip, band or chain, e.g. like a chainsaw
• CPC Class Codes: A61B 2017/3454 Details of tips

Abstract

An obturator for penetrating tissue includes an outer member defining a longitudinal axis, and having proximal and distal ends, a leading member disposed adjacent the distal end of the outer member and having a tissue contacting outer surface, and a blade mounted adjacent to the leading member. The blade is adapted for at least traversing movement relative to the longitudinal axis to thereby traverse the outer surface of the leading member to facilitate penetrating of tissue during advancement of the leading member within the tissue. The leading member may include an optical window adapted to permit passage of light therethrough for detection by a clinician.

Claims

1. An obturator for penetrating tissue, which comprises:

an outer member defining a longitudinal axis, and having proximal and distal ends;

a leading member disposed adjacent the distal end of the outer member and having a tissue contacting outer surface; and

a blade mounted adjacent the leading member, the blade adapted for at least traversing movement relative to the longitudinal axis to thereby traverse the outer surface of the leading member to facilitate penetrating of tissue during advancement of the leading member within the tissue.

2. The obturator according to claim 1 wherein the leading member includes an optical window adapted to permit passage of light therethrough for detection by a clinician.

3. The obturator according to claim 2 wherein the outer member includes a longitudinal opening adapted for reception of an endoscope.

4. The obturator according to claim 2 including an imaging device associated with the outer member, the imaging device adapted to transmit an image received through the optical window.

5. The obturator according to claim 1 wherein the blade is adapted for reciprocating movement along the outer surface of the leading member.

6. The obturator according to claim 1 wherein the outer surface of the leading member includes a channel for at least partial reception of the blade, the blade being movable within the channel.

7. The obturator according to claim 1 wherein the outer member includes an outer groove in general alignment with the channel of the leading member for at least partial reception of the blade, the blade being movable within the outer groove.

8. The obturator according to claim 7 wherein the outer member includes a pair of opposed outer grooves.

9. The obturator according to claim 1 wherein the blade is further adapted for longitudinal movement relative to the leading member to move between an initial position and an advanced position.

10. The obturator according to claim 1 including a housing connected to the proximal end of the outer member.

11. The obturator according to claim 10 including a manual actuator mounted to the housing and operatively connected to the blade, the manual actuator being dimensioned for manipulation by the clinician to cause the at least traversing movement of the blade.

12. The obturator according to claim 11 wherein the blade is adapted for longitudinal movement relative to the leading member to move between an initial position and an advanced position and further including a manual advancer mounted to the housing and operatively connected to the blade, the manual advancer being dimensioned for manipulation by the clinician to move the blade between the initial position and the advanced position.

13. An optical obturator, which comprises:

an outer sleeve member defining a longitudinal axis, and having proximal and distal ends, the outer sleeve member including a longitudinal opening for reception of an endoscope;

an optical member disposed adjacent the distal end of the outer sleeve member and having a tissue contacting outer surface, the optical member adapted to transfer an image of an object for detection by the endoscope; and

a blade mounted adjacent the optical member, the blade adapted for at least lateral traversing movement relative to the longitudinal axis to thereby traverse the outer surface of the leading member to facilitate penetrating of tissue during visualized advancement of the optical member within the tissue.

14. The optical obturator according to claim 13 wherein the optical member defines a general hemispherically-shaped configuration.

15. The optical obturator according to claim 13 wherein the tissue contacting surface includes an outer channel for at least partial reception of the blade, the blade adapted to slide within the channel during the lateral traversing movement thereof.

16. The optical obturator according to claim 14 wherein the blade is further adapted for longitudinal movement between an initial position and an advanced position wherein the blade at least partially extends beyond the optical member.

17. The optical obturator according to claim 16 including a manual advancer operative connected to the blade, the manual advancer being manually manipulatable to cause corresponding movement of the blade between the initial position and the advanced position.