Device and method for medical interventions of body lumens

• US 7,549,974 B2
• Filed: 05/30/2003
• Issued: 06/23/2009
• Est. Priority Date: 06/01/2002
• Status: Expired due to Fees

• Current Assignee: Board of Trustees of the Leland Stanford Junior University (Stanford University)
• Original Assignee: Board of Trustees of the Leland Stanford Junior University (Stanford University)
• Inventors: Nayak, Asha Shrinivas
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): KOHARSKI, CHRISTOPHER
• Application Number:
  US10/449,695
• Publication Number:
  US 20040049152A1
• Time in Patent Office: 2,216 Days
• Field of Search: 604/103.11, 604/509, 604/194, 604/916, 604/103, 604/96.01, 604/103.06, 604/101.02, 604/103.07, 604/103.09, 604/103.14, 604/103.12, 606/192, 606/194, 606/198
• US Class Current: 604/96.01
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 17/22032 having inflatable gripping elements balloon catheters A61M25/10
• CPC Class Codes: A61B 2017/22001 Angioplasty, e.g. PCTA
• CPC Class Codes: A61B 2017/22065 Functions of balloons
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61M 29/02 Dilators made of swellable material balloon catheters for angioplasty A61M25/104

Abstract

A directional balloon is provided that can be used for a medical intervention of a body lumen. In one aspect, the directional balloon inflates in a distal to proximal direction and deflates in a proximal to distal direction. In another aspect, the directional balloon inflates in a proximal to distal direction and deflates in a distal to proximal direction. The directional balloon is capable of providing an occlusive seal to protect against embolization. A suction catheter with a control means is provided to provide suction in a controlled fashion in a body lumen. The suction catheter is used during periods of a medical intervention that risks distal embolization. When turned on, the suction catheter is capable of removing unwanted materials. The suction means could be operated by a control means.

Claims

1. A device for a medical intervention of a body lumen, comprising:

a directional balloon adapted to be positioned in said body lumen, wherein said directional balloon comprises only a single inflatable section between a proximal end and a distal end of said directional balloon and said directional balloon has varying elasticity between said proximal and distal ends, whereby the varying elasticity results in;

(i) the radial inflation of said directional balloon being defined to radially inflate axially in a proximal to distal direction with respect to said directional balloon, and the radial deflation of said directional balloon being defined to radially deflate axially in a distal to proximal direction with respect to said directional balloon, or wherein (ii) the radial inflation of said directional balloon being defined to radially inflate axially in a distal to proximal direction with respect to said directional balloon, and the radial deflation of said directional balloon being defined to radially deflate axially in a proximal to distal direction with respect to said directional balloon.

2. The device as set forth in claim 1, further comprising a means to provide a milking action of said directional balloon.

3. The device as set forth in claim 1, wherein said directional balloon prevents distal embolization.

4. The device as set forth in claim 1, wherein said directional balloon is guided into said body lumen by means of a guidewire.

5. The device as set forth in claim 1, wherein said directional balloon comprises at least one non-uniform material.

6. The device as set forth in claim 1, wherein said directional balloon comprises different layers of materials.

7. The device as set forth in claim 1, wherein said directional balloon comprises different diameters along its linear axis.

8. The device as set forth in claim 1, wherein said directional balloon comprises a material that can be apposed to the wall of said body lumen.

9. A method for a medical intervention of a body lumen, comprising the step of:

providing a directional balloon having only a single inflatable section between a proximal end and a distal end of said directional balloon and said directional balloon having varying elasticity between said proximal and distal ends;

using said directional balloon in said body lumen; and

inflating said directional balloon, whereby said inflation is defined to radially inflate said directional balloon axially in a proximal to distal direction with respect to said directional balloon, and the radial deflation of said directional balloon is defined to radially deflate axially in a distal to proximal direction with respect to said directional balloon, or wherein (ii) the radial inflation of said directional balloon is defined to radially inflate axially in a distal to proximal direction with respect to said directional balloon, and the radial deflation of said directional balloon is defined to radially deflate axially in a proximal to distal direction with respect to said directional balloon.

10. The method as set forth in claim 9, wherein said at least a portion of said directional balloon provides an occlusion seal with said body lumen.

11. The method as set forth in claim 10 wherein said occlusive seal is positioned distal to a region in said body lumen that requires said medical intervention.

12. The method as set forth in claim 9, further comprising the step of providing a milking action of said directional balloon.

13. The method as set forth in claim 9, wherein said directional balloon is placed across a region that requires said medical intervention.

14. The method as set forth in claim 9, further comprising the step of providing a suction means wherein said suction means is capable of providing a distal to a proximal suction to remove unwanted materials during periods of said medical intervention that risks distal embolization.

15. The method as set forth in claim 9, further comprising the step of providing a filter means to filter out unwanted materials from said body lumen.

16. The method as set forth in claim 9, wherein said directional balloon is used to appose a material to the wall of said body lumen.

17. The method as set forth in claim 9, wherein said directional balloon is used to manipulate unwanted materials within said body lumen.

18. The method as set forth in claim 9, wherein said directional balloon is used to manipulate an inserted device within said body lumen.