Catheter having radially expandable main body

• US 20020022859A1
• Filed: 07/26/2001
• Published: 02/21/2002
• Est. Priority Date: 03/12/1999
• Status: Active Grant

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: Arteria Medical Science, Inc.
• Inventors: Hogendijk, Michael
• Granted Patent: US 6,632,236 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61B 17/00008 Vein tendon strippers tube strippers A61M1/83
• 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 17/22031 Gripping instruments, e.g. forceps, for removing or smashing calculi A61B17/221 takes precedence
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 17/3207 Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00292 mounted on or guided by flexible, e.g. catheter-like, means
• CPC Class Codes: A61B 2017/00778 Operations on blood vessels A61B2017/22097, A61B2017/320741 take precedence
• CPC Class Codes: A61B 2017/22067 Blocking; Occlusion A61B2017/22054 takes precedence
• CPC Class Codes: A61B 2017/22069 Immobilising; Stabilising
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61B 2017/320716 comprising means for preventing embolism by dislodged material
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61M 1/84 Drainage tubes; Aspiration tips for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32
• CPC Class Codes: A61M 2025/1015 having two or more independently movable balloons where the distance between the balloons can be adjusted, e.g. two balloon catheters concentric to each other forming an adjustable multiple balloon catheter system
• CPC Class Codes: A61M 2025/1052 for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 2025/109 : having balloons for removing solid matters, e.g. by grasping or scraping plaque, thrombus or other matters that obstruct the flow
• CPC Class Codes: A61M 25/104 : used for angioplasty

Abstract

Apparatus for occluding a vessel and enhancing blood flow within a catheter are provided, wherein a catheter comprises a multi-section self-expanding wire weave forming a radially expandable body and an occlusive distal section, covered with an elastomeric polymeric coating, and disposed within an outer sheath. Methods of using the apparatus of the present invention to remove emboli also are provided.

Claims

1. Apparatus suitable for removing emboli from a vessel, the apparatus comprising a catheter having a proximal section, an occlusive distal section, a main body extending therebetween, and a lumen extending therethrough, and an outer sheath, the outer sheath disposed to slide longitudinally along the catheter, the improvement comprising that the main body has a contracted delivery diameter when disposed within the outer sheath and a radially expanded deployed diameter when deployed from the outer sheath.

2. The apparatus of claim 1 wherein the proximal section comprises a fixed diameter.

3. The apparatus of claim 1 wherein the occlusive distal section comprises a contracted state and an expanded state suitable for occluding flow in a vessel.

4. The apparatus of claim 3 wherein the occlusive distal section further comprises a wire weave configuration that forms a predetermined shape in the expanded state.

5. The apparatus of claim 4 wherein the predetermined shape of the occlusive distal section, when deployed, is substantially flush with the vessel wall at a distal portion and tapers in proximally to connect to the main body of the catheter.

6. The apparatus of claim 4 wherein the occlusive distal section comprises Nitinol.

7. The apparatus of claim 1 wherein the main body comprises a plurality of individually compressible hoops.

8. The apparatus of claim 7 wherein the main body consists of a nickel-titanium alloy.

9. The apparatus of claim 7 wherein the individually compressible hoops are enclosed within an elastomeric polymer coating.

10. The apparatus of claim 7 further comprising a plurality of linkages connecting the individually compressible hoops.

11. The apparatus of claim 1 wherein the main body comprises a spiral configuration having a plurality of compressible spiral-shaped wires.

12. The apparatus of claim 11 wherein the main body consists of a nickel-titanium alloy.

13. The apparatus of claim 11 wherein the compressible spiral-shaped wires are enclosed within an elastomeric polymer coating.

14. The apparatus of claim 11 further comprising a plurality of linkages connecting the compressible spiral-shaped wires.

15. The apparatus of claim 1 wherein the main body spans a greater distance than the proximal section.

16. The apparatus of claim 1 wherein the diameter of the main body in an expanded state is larger than the diameter of the proximal section.

17. The apparatus of claim 1 wherein the outer sheath is positioned in a distalmost position to compress the main body and occlusive distal section within the outer sheath.

19. The method of claim 18 further comprising:

performing an interventional procedure; and

aspirating emboli generated during the interventional procedure into the lumen of the catheter.

18. A method for enhancing flow within a catheter, the method comprising:

providing a catheter in a contracted state, wherein the catheter comprises a proximal section, an occlusive distal section, a main body extending therebetween, and a lumen extending therethrough;

retracting an outer sheath proximally to deploy the occlusive distal section; and

further retracting the outer sheath proximally to cause radial expansion of the main body.