Balloon catheters with increased column strength

• US 10,426,936 B2
• Filed: 05/27/2016
• Issued: 10/01/2019
• Est. Priority Date: 06/09/2005
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Godin, Dominick, Blix, John, Wise, Derek, Gunderson, Richard C.
• Primary Examiner(s): Stransky, Katrina M
• Application Number:
  US15/167,255
• Publication Number:
  US 20160271376A1
• Time in Patent Office: 1,222 Days
• CPC Class Codes: A61M 2025/0063 having means, e.g. stylets, mandrils, rods or wires to reinforce or adjust temporarily the stiffness, column strength or pushability of catheters which are already inserted into the human body
• CPC Class Codes: A61M 2025/1079 having radio-opaque markers in the region of the balloon
• CPC Class Codes: A61M 25/0023 by the form of the lumen, e.g. cross-section, variable diameter
• CPC Class Codes: A61M 25/09 Guide wires
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 25/1006 Balloons formed between concentric tubes
• CPC Class Codes: A61M 25/10185 Valves
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

An intravascular balloon catheter that may include, for example, a first elongate member having a proximal end, an opening at the distal end and a lumen therebetween, a balloon defining a cavity, the balloon having a proximal waist sealingly attached to the first elongate member proximal the distal end, a distal waist, and a tubular portion therebetween, a second elongate member having a proximal end, a distal end and a lumen therebetween, the second elongate member disposed in the first elongate member and sealingly attached to the balloon distal waist, and a stopper attached to the second elongate member and disposed in the balloon cavity distal the distal end of the first elongate member, the stopper having an outer profile that prevents movement of the first elongate member thereover the first elongate member having an inner diameter at the distal end large enough to permit the passage of fluid therethrough over the second elongate member.

Claims

1. A medical device, comprising:

an expandable member having a proximal waist and a distal waist;

an outer member having a proximal end, a distal end and a lumen extending therein, wherein the outer member is attached to the proximal waist of the expandable member;

an inner member having a proximal end and a distal end, the inner member disposed within the lumen of the outer member, wherein the inner member is attached to the distal waist of the expandable member; and

a movement limiting member connecting the inner member to the outer member,

wherein the movement limiting member is a coil having a proximal end and a distal end, wherein the distal end of the coil is directly attached to the inner member;

wherein the movement limiting member is configured to limit movement of the outer member relative to the inner member.

2. The medical device of claim 1, wherein a portion of the inner member is positioned distal to the movement limiting member, and wherein the portion of the inner member positioned distal to the movement limiting member is configured to move distally with respect to the outer member.

3. The medical device of claim 1, wherein the distal end of outer member extends distally of the proximal waist of the expandable member.

4. The medical device of claim 3, wherein the distal end of the outer member extends into a cavity of the expandable member.

5. The medical device of claim 1, wherein the movement limiting member reduces relative movement of the inner and outer tubular members and provides increased column strength.

6. The medical device of claim 1, wherein the movement limiting member prevents distal movement of the outer tubular member from compressing the balloon while permitting the balloon to expand.