Cannula ingress system

• US 10,391,232 B2
• Filed: 08/28/2017
• Issued: 08/27/2019
• Est. Priority Date: 10/10/2014
• Status: Active Grant

• Current Assignee: Katalyst Surgical, LLC (Carl-Zeiss-Stiftung)
• Original Assignee: Katalyst Surgical, LLC (Carl-Zeiss-Stiftung)
• Inventors: Scheller, Gregg D, Scheller, Steven G, Niehoff, Bradley S
• Primary Examiner(s): Lee, Brandy S
• Application Number:
  US15/687,648
• Publication Number:
  US 20180008766A1
• Time in Patent Office: 729 Days
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 17/3462 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 Class Codes: A61F 9/007 Methods or devices for eye surgery
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 3/0283 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 Class Codes: A61M 39/22 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

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 hypos dermic 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.

Claims

1. An instrument comprising:

a hypodermic tube having a hypodermic tube distal end and a hypodermic tube proximal end wherein the hypodermic tube has 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 in the hypodermic tube and wherein the tip distal end extends out from the hypodermic tube distal end;

a tip stabilization mechanism having a tip stabilization mechanism distal end, a tip stabilization mechanism proximal end, a tip stabilization mechanism outer diameter, a channel, and a tip stabilization mechanism inner diameter wherein the tip stabilization mechanism inner diameter is configured to prevent the tip from deforming when the tip is inserted into a valved cannula; and

a fixation mechanism configured to contact a segment of the hypodermic tube through the channel of the tip stabilization mechanism with a static friction force to temporarily fix the tip stabilization mechanism in a position relative to the hypodermic tube.

2. The instrument of claim 1 wherein the fixation mechanism is configured to temporarily fix with a static friction force the tip stabilization mechanism in a position relative to the tip.

3. The instrument of claim 1 wherein the fixation mechanism contacts the hypodermic tube.

4. The instrument of claim 1 wherein the tip is colored black to enhance visualization of the tip.

5. The instrument of claim 1 further comprising:

an abrasive surface of the tip configured to grasp a portion of a membrane.

6. The instrument of claim 5 wherein the abrasive surface is colored black to enhance visualization of the abrasive surface.

7. The instrument of claim 1 wherein the tip is a membrane removing tip.

8. The instrument of claim 1 wherein the tip is an irrigating and aspirating tip.

9. The instrument of claim 1 further comprising:

a handle having a handle distal end and a handle proximal end wherein the hypodermic tube proximal end is disposed in the handle.

10. The instrument of claim 1 further comprising:

a fluid guide having a fluid guide distal end and a fluid guide proximal end wherein the hypodermic tube proximal end is disposed in the fluid guide.

11. The instrument of claim 10 further comprising:

a flow control mechanism having a flow control mechanism distal end and a flow control mechanism proximal end wherein the fluid guide proximal end is disposed in the flow control mechanism.

12. The instrument of claim 11 further comprising:

a pressure vent of the flow control mechanism.

13. The instrument of claim 12 further comprising:

a pressure vent tactile locator of the flow control mechanism.

14. An instrument comprising:

a hypodermic tube having a hypodermic tube distal end and a hypodermic tube proximal end wherein the hypodermic tube has 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 in the hypodermic tube and wherein the tip distal end extends out from the hypodermic tube distal end;

a tip stabilization mechanism having a tip stabilization mechanism distal end, a tip stabilization mechanism proximal end, a tip stabilization mechanism outer diameter, a channel, and a tip stabilization mechanism inner diameter wherein the tip stabilization mechanism inner diameter is configured to prevent the tip from deforming when the tip is inserted into a valved cannula; and

a fixation mechanism having a portion disposed within the channel of the tip stabilization mechanism, the portion being configured to contact a segment of the hypodermic tube with a static friction force to temporarily fix the tip stabilization mechanism in a position relative to the hypodermic tube.

15. The instrument of claim 14 wherein the tip is a membrane removing tip.

16. The instrument of claim 14 wherein the tip is an irrigating and aspirating tip.

17. The instrument of claim 14 wherein the tip is colored black to enhance visualization of the tip.

18. The instrument of claim 14 further comprising:

a handle having a handle distal end and a handle proximal end wherein the hypodermic tube proximal end is disposed in the handle.

19. The instrument of claim 14 further comprising:

a fluid guide having a fluid guide distal end and a fluid guide proximal end wherein the hypodermic tube proximal end is disposed in the fluid guide.