Designs for left ventricular conduit

• US 6,953,481 B2
• Filed: 06/23/2004
• Issued: 10/11/2005
• Est. Priority Date: 09/10/1998
• Status: Expired due to Fees

• Current Assignee: Horizon Technology Funding Co. LLC (Horizon Technology Finance Management LLC)
• Original Assignee: Percardia, Inc.
• Inventors: Griffin, Mark, Furnish, Simon, Wilk, Peter J., Hall, Todd A., Wolf, Scott J., Phelps, David Y., Furnish, Greg R., Schmelter, Jay
• Primary Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US10/873,642
• Publication Number:
  US 20050004505A1
• Time in Patent Office: 475 Days
• Field of Search: 623 111- 115, 623/23.64, 623/23.7, 606/194, 606/108, 604/8
• US Class Current: 623/23.7
• 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 2017/00252 for by-pass connections, i.e. connections from heart chamber to blood vessel or from blood vessel to blood vessel
• CPC Class Codes: A61B 2017/22077 with a part piercing the tissue A61B2017/22044 takes precedence
• CPC Class Codes: A61F 2/2493 Transmyocardial revascularisation [TMR] devices
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2/94 Stents retaining their form, i.e. not being deformable, after placement in the predetermined place
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/826 more than one stent being applied sequentially
• CPC Class Codes: A61F 2002/91541 Adjacent bands are arranged out of phase
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/006 Y-shaped
• CPC Class Codes: A61F 2250/0067 Means for introducing or releasing pharmaceutical products into the body
• CPC Class Codes: Y10S 623/903 Blood vessel

Abstract

A conduit is provided to provide a bypass around a blockage in the coronary artery. The conduit is adapted to be positioned in the myocardium or heart wall to provide a passage for blood to flow between a chamber of the heart such as the left ventricle and the coronary artery, distal to the blockage. The stent is self-expanding or uses a balloon to expand the stent in the heart wall. Various attachment means are provided to anchor the stent and prevent its migration.

Claims

1. An implant for defining a blood flow path from a heart chamber to a coronary vessel, said implant comprising:

a conduit having first and second ends;

said conduit sized and configured to extend through a heart myocardium to place said first end in fluid communication with a heart chamber;

said second end of said conduit adapted configured for connection to a coronary vessel, said second end including at least two anchor legs moveable between a flared position and a collapsed position, wherein said anchor legs are biased toward the flared position.

2. The implant of claim 1, wherein said conduit is sufficiently rigid to withstand contraction forces of the myocardium and remain open during both systole and diastole.

3. An implant for defining a blood flow path from a heart chamber to a coronary vessel, said implant comprising:

a conduit having first and second ends;

said conduit sized and configured to extend through a heart myocardium to place said first end in fluid communication with a heart chamber;

said second end of said conduit configured for connection to a coronary vessel, said second end including at least two anchors moveable between a flared position and a collapsed position, wherein said anchors are biased toward the flared position.

4. The implant of claim 3, wherein said conduit is sufficiently rigid to withstand contraction forces of the myocardium and remain open during both systole and diastole.

5. The implant of claim 3, wherein the anchors include hooks.

6. The implant of claim 3, wherein the anchors include barbs.

7. The implant of claim 3, wherein one of the anchors includes a collar.

8. The implant of claim 3, wherein the anchors include suture holes.

9. The implant of claim 3, wherein the anchors include flanges.

10. The implant of claim 3, wherein the anchors include flared edges.

11. An implant for defining a blood flow path from a heart chamber to a coronary vessel, said implant comprising:

a conduit having first and second ends;

said conduit sized and configured to extend through a heart myocardium to place said first end in fluid communication with a heart chamber;

said second end of said conduit configured for connection to a coronary vessel, said second end including a securement mechanism moveable between a flared position and a collapsed position, wherein said securement mechanism is biased toward the flared position.

12. The implant of claim 11, wherein said conduit is sufficiently rigid to withstand contraction forces of the myocardium and remain open during both systole and diastole.

13. The implant of claim 11, wherein the securement mechanism includes an anchor.

14. The implant of claim 11, wherein the securement mechanism includes a leg.

15. The implant of claim 11, wherein the securement mechanism includes a hook.

16. The implant of claim 11, wherein the securement mechanism includes a barb.

17. The implant of claim 11, wherein the securement mechanism includes a collar.

18. The implant of claim 11, wherein the securement mechanism includes a suture hole.

19. The implant of claim 11, wherein the securement mechanism includes a flange.

20. The implant of claim 11, wherein the securement mechanism includes a flared edge.