BALLOON CATHETER WITH FLOATING HUB

• US 20150105722A1
• Filed: 03/08/2013
• Published: 04/16/2015
• Est. Priority Date: 03/09/2012
• Status: Abandoned Application

• Current Assignee: Clearstream Technologies Limited (Becton, Dickinson & Co)
• Original Assignee: Clearstream Technologies Limited (Becton, Dickinson & Co)
• Inventors: Byrne, Pat, Schaffer, Andrew, Jensen, Angela Kay
• Application Number:
  US14/383,774
• Publication Number:
  US 20150105722A1
• Time in Patent Office: Days
• US Class Current: 604/96.01
• CPC Class Codes: A61M 2025/105 having a balloon suitable for drug delivery, e.g. by using holes for delivery, drug coating or membranes
• CPC Class Codes: A61M 2025/1079 having radio-opaque markers in the region of the balloon
• CPC Class Codes: A61M 25/0097 characterised by the hub connectors A61M39/10
• CPC Class Codes: A61M 25/1006 Balloons formed between concentric tubes
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

A balloon catheter for use with a guidewire includes an elongated, tubular shaft extending in a longitudinal direction, said shaft having a proximal end and a distal end. An inflatable balloon is connected to the distal end of the shaft, the balloon including a working surface. A radiopaque identifier is provided for identifying the working surface. A receiver adjacent the proximal end of the shaft is adapted for allowing the shaft to move relative to the receiver in at least the longitudinal direction.

Claims

1. A balloon catheter for use with a guidewire, comprising:

an elongated, tubular shaft extending in a longitudinal direction, said shaft having a proximal end and a distal end;

an inflatable balloon connected to the distal end of the shaft, the balloon including a working surface;

a radiopaque identifier for identifying the working surface; and

a receiver adjacent the proximal end of the shaft and adapted for allowing the shaft to move relative to the receiver in at least the longitudinal direction.

2. The catheter of claim 1, wherein the shaft carries a stop, and the receiver further includes a recess for receiving the stop, said recess having a dimension in the longitudinal direction that is greater than a corresponding dimension of the stop.

3. The catheter of claim 2, further including a tube for supplying an inflation fluid to inflate the balloon, said tube being connected to the receiver and generally coaxial with the shaft, and wherein the stop forms a seal with the recess to prevent the inflation fluid from passing around the shaft.

4. The catheter of claim 3, wherein the seal comprises an O-ring arranged coaxially with the shaft.

5. The catheter of claim 1, wherein the radiopaque identifier is separate from the shaft.

6. The catheter of claim 5, wherein the radiopaque identifier comprises an insert positioned within the interior compartment of the balloon.

7. The catheter of claim 6, wherein the insert comprises a tubular sleeve arranged coaxially with the shaft.

8. The catheter of claim 5, wherein the insert comprises a first insert at a proximal end of the balloon and a second insert at a distal end of the balloon.

9. The catheter of claim 1, further including a guidewire for positioning in the shaft.

10. A hub for a balloon catheter having an elongated, tubular shaft extending in a longitudinal direction, said shaft having a proximal end and a distal end, and an inflatable balloon connected to the distal end of the shaft for being inflated by an inflation fluid, comprising:

a body including a receiver for receiving a proximal portion of the shaft and adapted for allowing the shaft to move relative to the receiver in at least the longitudinal direction; and

a stop for restraining the movement of the shaft relative to the body in the longitudinal direction.

11. The hub of claim 10, wherein the body includes a guidewire port arranged in communication with the receiver, and further including an inflation port for introducing the inflation fluid for inflating the balloon.

12. The hub of claim 10, wherein the receiver further includes a recess for receiving the stop, said recess having a dimension in the longitudinal direction that is greater than a corresponding dimension of the stop.

13. The hub of claim 10, wherein the stop forms a seal with the recess to prevent the inflation fluid from passing.

14. The hub of claim 10, wherein the stop comprises an O-ring.

15. A catheter including a guidewire shaft having a distal end connected to a balloon and at a proximal end mounted for sliding movement.

16. The catheter of claim 15, further including a drug on the balloon.

17. The catheter of claim 15, further comprising a hub for receiving the proximal end of the guidewire shaft, the shaft being adapted to slidably move in a restrained manner relative to the hub.