Visualization trocar

• US 8,317,815 B2
• Filed: 10/05/2007
• Issued: 11/27/2012
• Est. Priority Date: 10/06/2006
• Status: Active Grant

• Current Assignee: Surgiquest, Inc. (Jefferies Financial Group, Inc.)
• Original Assignee: Surgiquest, Inc. (Jefferies Financial Group, Inc.)
• Inventors: Mastri, Dominick, Azarbarzin, Kurt
• Primary Examiner(s): Severson, Ryan
• Assistant Examiner(s): EASTWOOD, DAVID C
• Application Number:
  US11/973,123
• Publication Number:
  US 20080086160A1
• Time in Patent Office: 1,880 Days
• Field of Search: 606/185, 606/190, 604/264, 604/272, 604/273, 604/274, 604/284, 600/184
• US Class Current: 606/190
• 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 17/3423 Access ports, e.g. toroid shape introducers for instruments or hands access sites for liquids A61M39/0247
• CPC Class Codes: A61B 17/3498 Valves therefor, e.g. flapper valves, slide valves haemostasis valves A61M39/06; check valves A61M39/24
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00907 for light
• CPC Class Codes: A61B 2017/3454 Details of tips
• CPC Class Codes: A61B 2017/3456 blunt
• CPC Class Codes: A61B 2017/347 Locking means, e.g. for locking instrument in cannula
• CPC Class Codes: A61B 2090/064 for measuring force, pressure or mechanical tension
• CPC Class Codes: A61B 2090/3614 using optical fibre
• CPC Class Codes: A61B 2090/373 using light, e.g. by using optical scanners
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61B 50/30 Containers specially adapted for packaging, protecting, dispensing, collecting or disposing of surgical or diagnostic appliances or instruments for wound clamps A61B17/10; for ligaturing clips A61B17/122; packages or dispensers for surgical gloves or finger-stalls A61B42/40
• CPC Class Codes: A61B 90/37 Surgical systems with images on a monitor during operation

Abstract

A surgical trocar and penetrating tip therefor are provided. The tip includes a generally transparent body having proximal and distal ends and an opaque distal tip portion, an integral penetrating edge arranged at a distal end of the body, and inwardly tapered opposed facets formed on the body, converging with one another at the integral penetrating edge.

Claims

1. A penetrating tip for a surgical trocar, the penetrating tip comprising:

(a) a generally transparent body having opposed proximal and distal ends, the body including an opaque distal tip portion having a generally pyramidal shape configured to ease penetration through tissue, wherein the opacity of the distal tip portion helps to reduce internal reflections within the tip;

(b) an integral dissecting edge arranged at the distal end of the body;

(c) a pair of inwardly tapered opposed planar facets formed in the body, converging with one another at the integral dissecting edge; and

(d) a pair of opposed curved facets formed in the body, separating the pair of inwardly tapered opposed planar facets from one another and extending distally toward the integral dissecting edge.

2. The penetrating tip of claim 1, the tip further comprising an expanded-diameter region for engaging a surgical access device.

3. The penetrating tip of claim 1, wherein the opposed curved facets are concave grooves.

4. The penetrating tip of claim 1, wherein the opposed inwardly tapered planar facets are provided on the tip at about a 20 degree angle with respect to one another.

5. The penetrating tip of claim 1, wherein the opposed inwardly tapered planar facets are provided on the tip at about a 30 degree angle with respect to one another.

6. The penetrating tip of claim 1, wherein the integral dissecting edge is substantially straight in configuration.

7. The penetrating tip of claim 1, wherein a locking element is provided on the body for engaging an obturator.

8. The penetrating tip of claim 1, wherein the tip further includes an inner optical surface configured so as to minimize distortion of images taken through the penetrating tip.

9. The penetrating tip of claim 1, wherein the tip consists of a plastic material.

10. The penetrating tip of claim 1, wherein the tip is formed of polycarbonate plastic.

11. The penetrating tip of claim 1, wherein the tip is formed of polymethyl methacrylate.

19. The penetrating tip of claim 1, wherein the opaque distal tip portion has an opaque coating applied thereto.

20. The penetrating tip of claim 19, wherein the opaque coating includes paint.

21. The penetrating tip of claim 19, wherein the opaque coating is screen printed onto the distal tip portion.

22. The penetrating tip of claim 1, wherein the tip defines an enclosed interior therein disposed between the inwardly tapered opposed planar facets.

24. The penetrating tip of claim 1, wherein the integral dissecting edge is blunt.

12. A surgical trocar comprising:

(a) a handle;

(b) an elongated shaft extending distally from the handle; and

(c) a penetrating tip operatively associated with a distal end portion of the elongated shaft, the penetrating tip including;

(i) a generally transparent body having proximal and distal ends, the body having an opaque distal tip portion having a generally pyramidal shape configured to ease penetration through tissue, wherein the opacity of the distal tip portion helps to reduce internal reflections within the tip;

(ii) an integral dissecting edge arranged at the distal end of the body;

(iii) a pair of inwardly tapered opposed planar facets formed in the body, converging with one another at the integral dissecting edge; and

(iv) a pair of opposed curved facets formed in the body, separating the pair of inwardly tapered opposed planar facets from one another and extending distally toward the integral dissecting edge.

13. The surgical trocar of claim 12, further comprising an optical path extending from the tip to an imaging device.

14. The surgical trocar of claim 13, wherein the imaging device is a CCD sensor.

15. The surgical trocar of claim 13, wherein the imaging device is an optical eyepiece.

16. The surgical trocar of claim 13, wherein the imaging device is provided in the shaft of the surgical trocar.

17. The surgical trocar of claim 13, wherein the imaging device is provided external to the surgical trocar.

18. The surgical trocar of claim 12, further comprising an access device configured and dimensioned to receive the shaft of the trocar such that the penetrating tip protrudes from the end of the access device.

23. The surgical trocar of claim 12, wherein the integral dissecting edge is blunt such that the tip is adapted and configured to prevent accidental injury to internal anatomical structures.