IP Library › Granted Patent US 12,376,979
Granted Patent B2
US 12,376,979 · App. 18/079,500 · Granted Aug 5, 2025

Medical cannulae, delivery systems and methods

Inventors: Joshua Frye Krieger (Bloomington, IN); Melissa Lonn (Lafayette, IN)
Assignee: Cook Medical Technologies LLC
A61F2/966A61B17/00234A61B17/3421A61B17/3468A61M25/0013A61M25/0054A61M25/0138A61B2017/00309A61B2017/00336A61F2/95A61F2250/0018
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Quick Facts
Patent No.
US 12,376,979
App. No.
18/079,500
Granted
Aug 5, 2025
Kind
B2
Abstract

The disclosure relates to cannulae, delivery systems, methods of making cannulae, and methods of making delivery systems. A delivery system comprises an elongate outer tubular member defining an outer tubular member lumen, a cannula having a circumferential wall extending between a proximal end and a distal end and defining an interior lumen, and an intraluminal medical device disposed within the outer tubular member lumen distal to the cannula and not about the cannula. A pattern of openings arranged in an interrupted spiral extends circumferentially along the cannula.

Claims (30)

1. A medical cannula, comprising:

an elongate tubular member having a lengthwise axis and a circumferential wall extending between a proximal end and a distal end and defining an interior lumen, the circumferential wall having an outer circumferential surface defining a pattern of openings comprising a plurality of openings arranged in an interrupted spiral that extends circumferentially along the elongate tubular member, each opening of the plurality of openings having a first end that is curved, a first portion of the circumferential wall disposed between immediately adjacent openings within a first revolution of the interrupted spiral, a second portion of the circumferential wall disposed between immediately adjacent openings within a second revolution of the interrupted spiral, the first portion having a first circumferential length along the elongate tubular member, the second portion having a second circumferential length along the elongate tubular member that is different than the first circumferential length; and

an outer member disposed circumferentially about the elongate tubular member; wherein a third portion of the circumferential wall is disposed between a first pair of immediately adjacent revolutions of the interrupted spiral, the third portion having a first axial length along the lengthwise axis of the elongate tubular member; and wherein a fourth portion of the circumferential wall is disposed between a second pair of immediately adjacent revolutions of the interrupted spiral, the fourth portion having a second axial length along the lengthwise axis of the elongate tubular member that is different than the first axial length.

2. The medical cannula of claim 1 , wherein the outer member comprises a coating.

3. The medical cannula of claim 1 , wherein the outer member comprises a sheath disposed circumferentially about the elongate tubular member.

4. The medical cannula of claim 1 , wherein the outer member comprises a length of tubing heat shrunk onto the circumferential surface of the elongate tubular member.

5. The medical cannula of claim 4 , wherein the outer member comprises a polymeric material.

6. The medical cannula of claim 5 , wherein the outer member comprises one of Teflon and polyurethane.

7. The medical cannula of claim 1 , wherein the outer member covers the pattern of openings.

8. The medical cannula of claim 7 , wherein the outer member does not include any disruptions.

9. The medical cannula of claim 1 , wherein the pattern of openings extends along the entire axial length of the elongate tubular member.

10. The medical cannula of claim 1 , wherein the elongate tubular member has an intermediate axial portion extending between a proximal axial portion that includes the proximal end and a distal axial portion that includes the distal end; and

wherein the pattern of openings extends along the intermediate axial portion.

11. The medical cannula of claim 10 , wherein the distal axial portion of the elongate tubular member is free of the pattern of openings.

12. The medical cannula of claim 11 , wherein the proximal axial portion of the elongate tubular member is free of the pattern of openings.

13. The medical cannula of claim 1 , wherein the elongate tubular member has a proximal axial portion that includes the proximal end and a distal axial portion that includes the distal end; and

wherein the pattern of openings extends along the distal axial portion of the elongate tubular member.

14. The medical cannula of claim 13 , wherein the proximal axial portion of the elongate tubular member is free of the pattern of openings.

15. The medical cannula of claim 14 , wherein the proximal axial portion has a first axial length and the distal axial portion has a second axial length; and

wherein the first axial length is less than the second axial length.

16. The medical cannula of claim 14 , wherein the proximal axial portion has a first axial length and the distal axial portion has a second axial length; and

wherein the first axial length is greater than the second axial length.

17. The medical cannula of claim 1 , wherein each opening of the plurality of openings has a second end that is curved.

18. A medical cannula, comprising:

an elongate tubular member having a lengthwise axis and a circumferential wall extending between a proximal end and a distal end and defining an interior lumen, the circumferential wall having an outer circumferential surface defining a pattern of openings comprising a plurality of openings arranged in an interrupted spiral that extends circumferentially along the elongate tubular member, each opening of the plurality of openings having a first end that is curved, a first portion of the circumferential wall disposed between immediately adjacent openings within a first revolution of the interrupted spiral, a second portion of the circumferential wall disposed between immediately adjacent openings within a second revolution of the interrupted spiral, the first portion having a first circumferential length along the elongate tubular member, the second portion having a second circumferential length along the elongate tubular member that is different than the first circumferential length; and

a polymeric outer member disposed circumferentially about the elongate tubular member, the outer member not having any disruptions and covering the pattern of openings; wherein a third portion of the circumferential wall is disposed between a first pair of immediately adjacent revolutions of the interrupted spiral, the third portion having a first axial length along the lengthwise axis of the elongate tubular member; and wherein a fourth portion of the circumferential wall is disposed between a second pair of immediately adjacent revolutions of the interrupted spiral, the fourth portion having a second axial length along the lengthwise axis of the elongate tubular member that is different than the first axial length.

19. The medical cannula of claim 18 , wherein the pattern of openings extends along the entire axial length of the elongate tubular member.

20. A medical cannula, comprising:

a metal elongate tubular member having a lengthwise axis, a circumferential wall extending between a proximal end and a distal end and defining an interior lumen, a proximal axial portion that includes the proximal end and has a first axial length, and a distal axial portion that includes the distal end and has a second axial length that is greater than the first axial length, the circumferential wall having an outer circumferential surface defining a pattern of openings comprising a plurality of openings arranged in an interrupted spiral that extends circumferentially along the distal axial portion of the elongate tubular member but not along the proximal axial portion of the elongate tubular member, each opening of the plurality of openings having a first end that is curved, a first portion of the circumferential wall disposed between immediately adjacent openings within a first revolution of the interrupted spiral, a second portion of the circumferential wall disposed between immediately adjacent openings within a second revolution of the interrupted spiral, the first portion having a first circumferential length along the elongate tubular member, the second portion having a second circumferential length along the elongate tubular member that is different than the first circumferential length; and

a polymeric outer member disposed circumferentially about and heat shrunk onto the elongate tubular member, the outer member not having any disruptions and covering the pattern of openings; wherein a third portion of the circumferential wall is disposed between a first pair of immediately adjacent revolutions of the interrupted spiral, the third portion having a first axial length along the lengthwise axis of the elongate tubular member; and wherein a fourth portion of the circumferential wall is disposed between a second pair of immediately adjacent revolutions of the interrupted spiral, the fourth portion having a second axial length along the lengthwise axis of the elongate tubular member that is different than the first axial length.

Assignments (5)
SECURITY INTEREST Recorded Feb 28, 2024
From: COOK MEDICAL TECHNOLOGIES LLC
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 066700/0277 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 16, 2022
From: KRIEGER, JOSHUA FRYE
To: COOK INCORPORATED
Reel/Frame 062125/0374 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 16, 2022
From: COOK INCORPORATED
To: COOK MEDICAL TECHNOLOGIES LLC
Reel/Frame 062125/0416 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 16, 2022
From: LONN, MELISSA
To: MEDICAL ENGINEERING AND DEVELOPMENT INSTITUTE, INC.
Reel/Frame 062125/0445 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 16, 2022
From: MEDICAL ENGINEERING AND DEVELOPMENT INSTITUTE, INC.
To: COOK MEDICAL TECHNOLOGIES LLC
Reel/Frame 062125/0450 →
Continuity (4)
Continuation 16450070 · Jun 24, 2019
Continuation 15140028 · Apr 27, 2016
Provisional Application 62153814 · Apr 28, 2015
Related Publication 20230115266A1 · Apr 13, 2023
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