Cannula ingress system

Patent metadata

Field	Value
Publication number	US-9775943-B2
Application number	US-201514803557-A
Country	US
Kind code	B2
Filing date	Jul 20, 2015
Priority date	Oct 10, 2014
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

A cannula ingress system may include a tip stabilization mechanism having a tip stabilization mechanism distal end and a tip stabilization mechanism proximal end, a fixation mechanism, a hypodermic tube having a hypodermic tube distal end and a hypodermic tube proximal end, and a tip having a tip distal end and a tip proximal end. The tip may be disposed within the hypodermic tube wherein the tip distal end extends from the hypodermic tube distal end. The fixation mechanism may be disposed within a fixation mechanism channel of the tip stabilization mechanism. The tip stabilization mechanism may be disposed over the tip and the hypodermic tube distal end.

First claim

What is claimed is:

1. A system comprising:
a hypodermic tube having a hypodermic tube distal end and a hypodermic tube proximal end, the hypodermic tube having dimensions configured for performing ophthalmic surgery;
a tip having a tip distal end and a tip proximal end wherein the tip proximal end is disposed within the hypodermic tube and the tip distal end extends out from the hypodermic tube distal end;
a tip stabilization mechanism having a tip stabilization mechanism distal end and a tip stabilization mechanism proximal end; and
a fixation mechanism disposed over a portion of the tip stabilization mechanism wherein a portion of the fixation mechanism is disposed in a fixation mechanism channel of the tip stabilization mechanism wherein the tip distal end and the hypodermic tube distal end are disposed within an inner bore of the tip stabilization mechanism and the fixation mechanism is configured to temporarily fix the tip stabilization mechanism in a position relative to the hypodermic tube wherein the tip stabilization mechanism has an outer diameter that is less than an outer diameter of the fixation mechanism.

2. The system of claim 1 wherein the fixation mechanism contacts a portion of the hypodermic needle.

3. The system of claim 2 wherein a static friction force is configured to temporarily fix the tip stabilization mechanism in the position relative to the hypodermic tube.

4. The system of claim 1 wherein the tip stabilization mechanism is configured to prevent the tip from deforming beyond a line tangent to an outer diameter of a valved cannula.

5. The system of claim 4 wherein the tip stabilization mechanism is configured to actuate a first valve hinge of the valved cannula.

6. The system of claim 5 wherein the tip stabilization mechanism is configured to separate the first valve hinge and a second valve hinge at a valve hinge interface.

7. The system of claim 6 wherein the tip stabilization mechanism is configured to guide the tip distal end into an inner lumen of the valved cannula.

8. The system of claim 1 wherein the tip stabilization mechanism is configured to prevent the tip from deforming beyond a line tangent to a wall of an inner lumen of a cannula.

9. The system of claim 1 wherein the tip stabilization mechanism is configured to prevent the tip from deforming after a contact between the tip distal end and a valve hinge superior surface.

10. The system of claim 1 further comprising:
an abrasive surface of the tip configured to grasp a portion of a membrane.

11. The system of claim 10 further comprising:
biocompatible particles of the abrasive surface.

12. The system of claim 11 wherein the tip is colored black to enhance visualization of the biocompatible particles of the abrasive surface.

13. The system of claim 1 wherein the tip is colored black to enhance visualization of the tip.

14. The system of claim 13 wherein the tip is manufactured from black silicone.

15. The system of claim 1 wherein the tip is colored grey to enhance visualization of the tip.

16. The system of claim 1 wherein the tip is colored any color not contained within Johannes Itten's color wheel to enhance visualization of the tip.

17. The system of claim 1 further comprising:
an inner lumen of the tip configured for irrigation of fluids.

18. The system of claim 17 wherein the inner lumen of the tip is configured for aspiration of fluids.

19. The system of claim 1 wherein an application of a force to the tip stabilization mechanism proximal end is configured to actuate the tip stabilization mechanism relative to the hypodermic tube.

20. The system of claim 19 wherein the application of the force to the tip stabilization mechanism proximal end is configured to expose the tip distal end.

Assignees

• Katalyst Surgical Llc

Inventors

• Scheller Gregg D
• Scheller Steven G
• Niehoff Bradley S

Classifications

• A61B17/3462

  with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals (expandable cannulas A61B17/3417) · CPC title

• A61B17/3421

  Cannulas · CPC title

• A61M39/22

  Valves or arrangement of valves {(A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405)} · CPC title

• A61M2205/582

  by tactile feedback · CPC title

• A61M3/0283 Primary

  with at least two inner passageways, a first one for irrigating and a second for evacuating (suction-irrigation systems A61M1/77; aspiration tips with fluid supply means A61M1/85; for negative pressure wound therapy A61M1/92) · CPC title