Ureteral stent and related methods

Patent metadata

Field	Value
Publication number	US-11564820-B2
Application number	US-201716328349-A
Country	US
Kind code	B2
Filing date	Sep 1, 2017
Priority date	Sep 2, 2016
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

The embodiments disclosed herein relate to a ureteral stent having two stent bodies and a tether. The stent can minimize or prevent migration of the device out of the bladder of the patient while also reducing patient discomfort associated with such stents.

First claim

What is claimed is:

1. A ureteral stent, comprising:
(a) a first tubular stent body comprising a first lumen;
(b) a first retention structure extending from a distal end of the first tubular stent body;
(c) a second tubular stent body comprising a second lumen;
(d) a second retention structure extending from a distal end of the second tubular stent body; and
(e) an elongate connection member comprising:
(i) a first length extending from a proximal end of the first tubular stent body such that the first length and the first tubular stent body form a first single unitary component; and
(ii) a second length extending from a proximal end of the second tubular stent body such that the second length and the second tubular stent body form a second single unitary component,
wherein the first and second lengths are coupleable.

2. The ureteral stent of claim 1 , wherein the connection member is configured to prevent distal migration of the first and second tubular stent bodies.

3. The ureteral stent of claim 1 , further comprising openings defined in the first tubular stent body and the second tubular stent body.

4. The ureteral stent of claim 3 , wherein the openings provide fluidic access to the first and second lumens.

5. A ureteral stent, comprising:
(a) a first tubular stent body comprising a first lumen, wherein the first tubular stent body is disposable within a first ureter;
(b) a first retention structure extending from a distal end of the first tubular stent body, wherein the first retention structure is disposable within a first kidney;
(c) a second tubular stent body comprising a second lumen, wherein the second tubular stent body is disposable within a second ureter
(d) a second retention structure extending from a distal end of the second tubular stent body, wherein the second retention structure is disposable within a second kidney; and
(e) an elongate connection member comprising:
(i) a first length comprising:
(A) a first end extending from a proximal end of the first tubular stent body, wherein the first end and the first tubular stent body form a first single unitary component; and
(B) a first magnet coupled to the first length; and

(ii) a second length comprising:
(A) a second end extending from a proximal end of the second tubular stent body, wherein the second end and the second tubular stent body form a second single unitary component; and
(B) a second magnet coupled to the second length, wherein the second magnet is magnetically coupleable with the first magnet such that the first and second lengths are coupled together within a bladder of a patient.

6. The ureteral stent of claim 5 , wherein the connection member is configured to prevent distal migration of the first and second tubular stent bodies.

7. A method of promoting flow of urine to a bladder of a patient, the method comprising:
inserting a first guidewire into a first kidney via a first ureter;
inserting a second guidewire into a second kidney via a second ureter;
urging a first tubular stent body distally on the first guidewire until a first retention structure extending from a distal end of the first tubular stent body is disposed in the first kidney, wherein the first tubular stent body comprises:
(a) a first lumen; and
(b) a first connection member extending from a proximal end of the first tubular stent body such that the first tubular stent body and the first connection member form a first single unitary component, the first connection member comprising a first coupling structure;

urging a second tubular stent body distally on the second guidewire until a second retention structure extending from a distal end of the second tubular stent body is disposed in the second kidney, wherein the second tubular stent body comprises:
(a) a second lumen; and
(b) a second connection member extending from a proximal end of the second tubular stent body such that the second tubular stent body and the second connection member form a second single unitary component, the second connection member comprising a second coupling structure; and

coupling the first coupling structure to the second coupling structure such that the first and second connection members are disposed entirely within the bladder when the first retention structure is disposed in the first kidney and the second retention structure is disposed in the second kidney.

8. The method of claim 7 , further comprising magnetically coupling the first coupling structure to the second coupling structure in the bladder.

9. The method of claim 7 , further comprising urging the first and second connection members proximally out of the bladder to remove the first and second connection members, the first tubular stent body, and the second tubular stent body from the patient.

10. The method of claim 7 , wherein the first and second connection members prevent distal migration of the first and second tubular stent bodies.

11. The ureteral stent of claim 1 , wherein the first tubular stent body, the second tubular stent body, and the elongate connection member are sized such that the elongate connection member and the proximal ends of the first and second tubular stent bodies are disposed entirely within the bladder.

12. The ureteral stent of claim 1 , wherein the first and second lengths are magnetically coupleable.

13. The ureteral stent of claim 5 , wherein the first tubular stent body, the second tubular stent body, and the elongate connection member are sized such that the elongate connection member and the proximal ends of the first and second tubular stent bodies are disposed entirely within the bladder.

14. The ureteral stent of claim 5 , further comprising openings defined in the first tubular stent body and the second tubular stent body.

15. The ureteral stent of claim 14 , wherein the openings provide fluidic access to the first and second lumens.

16. The method of claim 7 , wherein the first tubular stent body, the second tubular stent body, and the first and second connection members are sized such that the first and second connection members and the proximal ends of the first and second tubular stent bodies are disposed entirely within the bladder.

17. The method of claim 7 , further comprising openings defined in the first tubular stent body and the second tubular stent body.

18. The ureteral stent of claim 17 , wherein the openings provide fluidic access to the first and second lumens.

Assignees

• Univ California
• Univ California

Inventors

• Hsi Ryan
• Stoller Marshall

Classifications

• A61F2/04 Primary

  Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts (A61F2/18, A61F2/20 take precedence; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95) · CPC title

• A61F2220/0075

  sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable · CPC title

• A61F2250/0098

  radio-opaque, e.g. radio-opaque markers · CPC title

• A61F2/94 Primary

  Stents retaining their form, i.e. not being deformable, after placement in the predetermined place · CPC title

• A61F2002/048

  Ureters · CPC title