Method and apparatus for emboli containment

• US 20060200075A1
• 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:
  US11/417,570
• Publication Number:
  US 20060200075A1
• Time in Patent Office: Days
• US Class Current: 604/101.50
• 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

Disclosed herein is a catheter for use in an emboli containment system. In one embodiment, the catheter 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 emboli containment, the apparatus comprising:

a flexible elongate member having a proximal extremity and a distal extremity;

a self-expanding member disposed about the distal extremity of the flexible elongate member, the self-expanding member having a compressed state and an expanded state;

a sleeve comprising;

a proximal extremity, a distal extremity, and a sleeve bore extending from the proximal extremity of the sleeve to the distal extremity of the sleeve and being sized to receive the flexible elongate member and to cover the self-expanding member to maintain the self-expanding member in its compressed state; and

a collar located at the proximal extremity of the sleeve; and

an aspiration catheter having a proximal extremity, a distal extremity, and an aspiration lumen extending between the proximal extremity of the aspiration catheter and the distal extremity of the aspiration catheter, the aspiration catheter adapted to move in coaxial relation to the flexible elongate member.

2. The apparatus of claim 1, wherein the self-expanding member comprises a braided structure.

3. The apparatus of claim 2, wherein the braided structure is at least partially covered by a polymer.

4. The apparatus of claim 1, wherein the self-expanding member at least partially defines an opening at least in the expanded state.

5. The apparatus of claim 4, wherein a polymer extends across the opening and at least partially prevents emboli from moving downstream.

6. The apparatus of claim 1, wherein the self-expanding member comprises a support structure.

7. The apparatus of claim 6, wherein a polymer extends between the support structure and the flexible elongate member.

8. The apparatus of claim 1, wherein the self-expanding member is configured to form a sealing engagement with the wall of the vessel when the self-expanding member is in its expanded state.

9. An apparatus for emboli containment comprising:

a flexible elongate member having a proximal extremity and a distal extremity;

a self-expanding member comprising a support structure at least partially defining an opening at least in the expanded state and a polymer extending across the opening, the self-expanding member disposed about the distal extremity of the flexible elongate member, the self-expanding member having an expanded state and a compressed state; and

a sleeve comprising a proximal extremity, a distal extremity, and a sleeve bore extending from the proximal extremity of the sleeve to the distal extremity of the sleeve and being sized to receive the flexible elongate member and to cover the self-expanding member to maintain the self-expanding member in its compressed state.

10. The apparatus of claim 9, wherein the sleeve further comprises a collar located at the proximal extremity of the sleeve.

11. The apparatus of claim 10, wherein the collar is configured to couple with the proximal extremity of the flexible elongate member to prevent motion of the sleeve relative to the flexible elongate member during insertion of the apparatus.

12. The apparatus of claim 9, further comprising a treatment catheter having a proximal extremity and a distal extremity, the treatment catheter adapted to move in coaxial relation to the flexible elongate member.

13. The apparatus of claim 12, wherein the treatment catheter is an aspiration catheter.

14. The apparatus of claim 12, wherein the treatment catheter is a balloon catheter.

15. The apparatus of claim 9, wherein the polymer at least partially prevents emboli from moving downstream.

16. The apparatus of claim 9, wherein the flexible elongate member is configured so that the sleeve can be maintained on the flexible elongate member when the treatment catheter is on the flexible elongate member.

17. The apparatus of claim 9, wherein the self-expanding member is configured to form a sealing engagement with the wall of the vessel when the self-expanding member is in its expanded state.

18. An apparatus for emboli containment, the apparatus comprising:

a flexible elongate member having a proximal extremity and a distal extremity;

a metallic member disposed about the distal extremity of the flexible elongate member, the metallic member having an expanded state and a compressed state;

a first treatment catheter having a proximal extremity and a distal extremity; and

a second treatment catheter having a proximal extremity and a distal extremity;

wherein the first treatment catheter is adapted to be delivered in coaxial relation to the flexible elongate member and then removed from the flexible elongate member and the second treatment catheter is adapted to be delivered in coaxial relation to the flexible elongate member and then removed from the flexible elongate member following the removal of the first treatment catheter from the proximal end of the flexible elongate member.

19. The apparatus of claim 18, wherein the metallic member comprises a braided structure.

20. The apparatus of claim 19, wherein the braided structure is at least partially covered by a polymer.

21. The apparatus of claim 18, wherein the metallic member at least partially defines an opening at least in the expanded state.

22. The apparatus of claim 21, wherein a polymer extends across the opening and at least partially prevents emboli from moving downstream.

23. The apparatus of claim 18, wherein the metallic member comprises a support structure.

24. The apparatus of claim 23, wherein a polymer extends between the support structure and the flexible elongate member.

25. The apparatus of claim 18, wherein the metallic member is configured to form a sealing engagement with the wall of the vessel when the metallic member is in its expanded state.

26. The apparatus of claim 18, further comprising a third treatment catheter having a proximal extremity and a distal extremity, the third treatment catheter adapted to be delivered in coaxial relation to the flexible elongate member and then removed from the flexible elongate member, wherein the third treatment catheter is delivered following the removal of the second treatment catheter from the proximal end of the flexible elongate member.

27. The apparatus of claim 18, wherein the first treatment catheter is a balloon dilatation catheter.

28. The apparatus of claim 26, wherein the third treatment catheter is a balloon dilatation catheter.

29. The apparatus of claim 18, wherein at least one of either the first treatment catheter or second treatment catheter is an aspiration catheter.