Method and apparatus for emboli containment

• US 20060200074A1
• Filed: 05/03/2006
• Published: 09/07/2006
• Est. Priority Date: 05/20/1996
• Status: Abandoned Application

• Current Assignee: Gholam-Reza Zadno-Azizi
• Original Assignee: Gholam-Reza Zadno-Azizi
• Inventors: Zadno-Azizi, Gholam-Reza
• Application Number:
  US11/417,714
• Publication Number:
  US 20060200074A1
• Time in Patent Office: Days
• US Class Current: 604/96.10
• CPC Class Codes: A61B 17/12045 double occlusion, e.g. during anastomosis
• CPC Class Codes: A61B 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/12172 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• 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 2017/12127 Double occlusion, e.g. for creating blood-free anastomosis site
• CPC Class Codes: A61B 2017/22055 with three or more balloons
• CPC Class Codes: A61B 2017/22067 Blocking; Occlusion A61B2017/22054 takes precedence
• CPC Class Codes: A61B 2017/22084 stone- or thrombus-dissolving
• 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: A61M 2025/0018 having a plug, e.g. an inflatable plug for closing catheter lumens
• CPC Class Codes: A61M 2025/0034 characterized by elements which are assembled, connected or fused, e.g. splittable tubes, outer sheaths creating lumina or separate cores making of catheters A61M25/0009
• CPC Class Codes: A61M 2025/0036 with more than four lumina
• CPC Class Codes: A61M 2025/0037 characterized by lumina being arranged side-by-side
• CPC Class Codes: A61M 2025/0081 Soft tip
• CPC Class Codes: A61M 2025/0183 Rapid exchange or monorail catheters
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
• 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 2025/1031 Surface processing of balloon members, e.g. coating or deposition; Mounting additional parts onto the balloon member's surface
• CPC Class Codes: A61M 2025/1045 : for treating bifurcations, e.g. balloons in y-configuration, separate balloons or special features of the catheter for treating bifurcations
• CPC Class Codes: A61M 2025/1052 : for temporarily occluding a vessel for isolating a sector
• CPC Class Codes: A61M 2025/1079 : having radio-opaque markers in the region of the balloon
• 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 2025/1093 : having particular tip characteristics
• CPC Class Codes: A61M 25/0009 : Making of catheters or other medical or surgical tubes
• CPC Class Codes: A61M 25/0012 : with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils
• CPC Class Codes: A61M 25/0026 : Multi-lumen catheters with stationary elements catheter assemblies comprising a catheter in combination with a guide tube, sheath or sleeve A61M2025/0681; catheters comprising telescoping coaxial elements A61M2025/0175
• CPC Class Codes: A61M 25/0029 : characterized by features relating to least one lumen located at the middle part of the catheter, e.g. slots, flaps, valves, cuffs, apertures, notches, grooves or rapid exchange ports catheter shaft surface irregularities A61M2025/006
• CPC Class Codes: A61M 25/0032 : characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or shapes comprising concave and convex parts
• CPC Class Codes: A61M 25/0053 : having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid
• CPC Class Codes: A61M 25/0054 : with regions for increasing flexibility
• CPC Class Codes: A61M 25/0068 : Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
• CPC Class Codes: A61M 25/007 : Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
• CPC Class Codes: A61M 25/0075 : Valve means
• 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 25/1011 : Multiple balloon catheters
• CPC Class Codes: A61M 25/1018 : Balloon inflating or inflation-control devices
• CPC Class Codes: A61M 25/1027 : Making of balloon catheters
• CPC Class Codes: A61M 25/104 : used for angioplasty
• CPC Class Codes: B29C 55/04 : uniaxial, e.g. oblique

Abstract

A catheter for use in an emboli containment system includes a flexible elongate member having self-expanding sealing means mounted on its distal extremity. This self-expanding sealing means can take any suitable form, such as a braided structure formed of a suitable shape memory material such as a nickel titanium alloy. In order to prevent abrasion of a vessel, it is desirable to cover the braided structure with a covering of a suitable material such as a polymer which extends over the braided structure and which moves with the braided structure as it expands and contracts.

Claims

1. An apparatus for occlusion of a vessel, the apparatus comprising:

a flexible elongate member having a distal extremity; and

an expandable and contractible metallic braided structure having first and second ends, both the first and second ends being mounted on the distal extremity, the braided structure having a covering thereon, the covering being movable with the braided structure during expansion thereof and being capable of substantial sealing engagement with a wall of the vessel to interrupt fluid flow there through.

2. The apparatus of claim 1, wherein the braided structure is self-expanding.

3. The apparatus of claim 2, further comprising an elongate sleeve, the sleeve being slidable over the braided structure for contraction thereof.

4. The apparatus of claim 1, wherein the elongate member has a lumen extending there through.

5. The apparatus of claim 1, wherein the covering is movable with the braided structure during expansion and contraction thereof.

6. An apparatus for temporary occlusion of a blood vessel, the apparatus comprising:

a flexible elongate member having a distal extremity;

a structure having first and second ends mounted on the distal extremity and having contracted and expanded configurations; and

a covering on the structure, the covering being movable with the structure during expansion thereof and being capable of substantial sealing engagement with a wall of the blood vessel to interrupt blood flow there through, the structure and the covering being non-inflatable between the contracted and expanded configurations.

7. The apparatus of claim 6, wherein the structure comprises a braid.

8. The apparatus of claim 7, wherein the braid comprises a metal.

9. The apparatus of claim 6, wherein the structure is self-expanding.

10. The apparatus of claim 9, further comprising an elongate sleeve, the sleeve being slidably disposed over the structure for contraction thereof.

11. The apparatus of claim 6, wherein the covering is moveable with the structure during expansion and contraction thereof.

12. The apparatus of claim 6, wherein the covering expands and contracts with the structure.

13. An apparatus for occlusion of a vessel, the apparatus comprising:

a flexible elongate member having a distal extremity;

a braided structure having first and second ends, both the first and second ends being mounted about the distal extremity, the structure being movable between a contracted shape and an expanded shape; and

a covering being located on and movable with the braided structure such that, when the braided structure is in the expanded shape, the covering substantially seals against a wall of the vessel to interrupt fluid flow there through, the braided structure and the covering being non-inflatable between the contracted and expanded shapes.

14. The apparatus of claim 13, wherein the braided structure has a shape memory.

15. The apparatus of claim 14, wherein the shape memory is the expanded shape.

16. The apparatus of claim 15, further comprising an elongate sleeve, the sleeve being slidably disposed over the braided structure for encasing the braided structure in the contracted shape.

17. The apparatus of claim 13, wherein the braided structure comprises a material selected from the group consisting of shape memory metal, nickel titanium alloy, stainless steel and titanium.

18. The apparatus of claim 13, wherein the covering comprises a material selected from the group consisting of silicone, C-Flex, polyethylene and PET.

19. An apparatus for occlusion of a blood vessel, the apparatus comprising:

a flexible elongate member having a distal extremity; and

means for sealing having first and second ends, both the first and second ends being mounted on the distal extremity, the means for sealing being capable of self-expansion into sealing engagement with a wall of the blood vessel to interrupt blood flow there through.

20. The apparatus of claim 19, wherein the means for sealing comprises an expandable and contractible braided structure with a covering thereon, the covering being movable with the braided structure during expansion and contraction thereof.

21. The apparatus of claim 19, wherein the means for sealing comprises an absorbent material which, when it absorbs blood, expands to form a seal with a wall of the blood vessel.