Stents with bladder retention members

Patent metadata

Field	Value
Publication number	US-9789293-B2
Application number	US-201113156827-A
Country	US
Kind code	B2
Filing date	Jun 9, 2011
Priority date	Jun 24, 2010
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A medical device including an elongate member having a distal end portion, a proximal end portion, and a medial portion disposed between the distal end portion an the proximal end portion. The proximal end portion is configured to be disposed within a bladder of a patient. A portion of the proximal end portion is configured to contact an inner wall of the bladder to help retain the bladder in an expanded configuration.

First claim

What is claimed is:

1. A medical device, comprising:
an elongate member having a distal end portion, and a proximal end portion, the distal end portion including a first retention member configured to be disposed within a kidney of a patient, the proximal end portion including a second retention member configured to be disposed within a bladder of the patient, the elongate member including a medial portion disposed between the distal end portion and the proximal end portion, the medial portion being of a length configured to extend from the kidney to the bladder,
the first retention member including a first material that extends an entire length of the first retention member, the medial portion including a second material such that the second material extends along the length of the medial portion and into a distal end portion of the second retention member, the second retention member including a proximal end portion having a third material,
wherein prior to implantation within the patient each of the first material, the second material, and the third material includes a different respective biocompatible plastic having different respective first, second and third durometer values, the second material having a lower durometer value than the first material, the second material having a lower durometer value than the third material, the first material having a durometer of between 86 and 90 shore A, the second material having a durometer of between 82 and 86 shore A, and the third material having a durometer of between 86 and 95 shore A, the medical device being co-extruded.

2. The medical device of claim 1 , wherein the second retention member of the elongate member is configured to avoid a trigone region of the patient.

3. The medical device of claim 1 , wherein the second retention member of the elongate member includes a malecot having a plurality of arms, wherein only a portion of each of the plurality of arms that is proximal to the medial portion is composed of the second material and other portions of each of the plurality of arms are composed of the third material.

4. The medical device of claim 1 , wherein the second retention member includes a first arm and a second arm, the first arm being configured to contact an inner wall of the bladder of the patient at a first location, the second arm being configured to contact the inner wall of the bladder of the patient at a second location, the second location being different than the first location, wherein only a portion of each of the first arm and the second arm that is proximal to the medial portion is composed of the second material and other portions of the first arm and the second arm are composed of the third material.

5. A medical device comprising:
an elongate member having a distal end portion, and a proximal end portion, the distal end portion including a first retention member configured to be disposed within a kidney of a patient, the proximal end portion including a second retention member configured to be disposed within a bladder of the patient, the elongate member including a medial portion disposed between the distal end portion and the proximal end portion, the medial portion being of a length configured to extend from the kidney to the bladder,
the first retention member being composed of a first material, the medial portion being composed of a second material such that the second material extends along the length of the medial portion and into a distal end portion of the second retention member, the second retention member including a proximal end portion being composed of a third material,
wherein prior to implantation within the patient each of the first material, the second material, and the third material includes a different respective biocompatible plastic having different respective first, second and third durometer values, the second material having a lower durometer value than the first material, the second material having a lower durometer value than the third material, the first material having a durometer of between 86 and 90 shore A, the second material having a durometer of between 82 and 86 shore A, and the third material having a durometer of between 86 and 95 shore A, the medical device being co-extruded.

6. The medical device of claim 5 , wherein the second retention member includes a first arm and a second arm, the first arm being configured to contact the bladder of the patient at a first location, the second arm being configured to contact the bladder of the patient at a second location different than the first location, wherein only a portion of each of the first arm and the second arm that is proximal to the medial portion is composed of the second material and other portions of the first arm and the second arm are composed of the third material.

7. The medical device of claim 5 , wherein the second retention structure is configured to contact an inner portion of the bladder of the patient to retain the bladder in an expanded configuration.

8. The medical device of claim 5 , wherein the second retention structure includes a malecot having a plurality of arms, wherein only a portion of each of the plurality of arms that is proximal to the medial portion is composed of the second material and other portions of each of the plurality of arms are composed of the third material.

9. The medical device of claim 5 , wherein the second retention structure is configured to be disposed in the bladder of the patient and to avoid contact with a trigone region of the patient.

10. A device comprising:
an elongate member having a distal end portion, and a proximal end portion, the distal end portion including a retention member configured to be disposed within a kidney of a patient, the proximal end portion including a malecot configured to be disposed within a bladder of the patient, the elongate member including a medial portion disposed between the distal end portion and the proximal end portion, the medial portion being of a length configured to extend from the kidney to the bladder,
the retention member of the distal end portion of the elongate member being entirely composed of a first material, the malecot including a distal end portion composed of the second material and a proximal end portion composed of a third material,
wherein prior to implantation within the patient each of the first material, the second material, and the third material includes a different respective biocompatible plastic having different respective first, second and third durometer values, the second material having a lower durometer value than the first material, the second material having a lower durometer value than the third material, the first material having a durometer of between 86 and 90 shore A, the second material having a durometer of between 82 and 86 shore A, and the third material having a durometer of between 86 and 95 shore A, the device being co-extruded.

11. The device of claim 10 , wherein the malecot includes a first arm and a second arm, the first arm being configured to contact the bladder of the patient at a first location, the second arm being configured to contact the bladder of the patient at a second location different than the first location.

12. The device of claim 10 , wherein the malecot is configured to contact an inner portion of the bladder of the patient to retain the bladder in an expanded configuration.

13. The medical device of claim 10 , wherein the malecot is configured to be disposed in the bladder of the patient and to avoid contact with a trigone region of the patient.

Assignees

• Teague James
• Deal Travis
• Deal Nancy
• Lingeman John
• Boston Scient Scimed Inc

Inventors

• Teague James
• Deal Travis
• Lingeman John

Classifications

• A61F2002/047

  Urethrae · CPC title

• A61F2/04

  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

• A61F2250/0018

  differing in elasticity, stiffness or compressibility · CPC title

• A61F2250/0029

  differing in bending or flexure capacity · CPC title

• A61F2002/048

  Ureters · CPC title