Mitral valve treatment

• US 8,496,671 B1
• Filed: 06/16/2010
• Issued: 07/30/2013
• Est. Priority Date: 06/16/2010
• Status: Expired due to Fees

• Current Assignee: Aesculap AG (B. Braun Holding GmbH & Co. KG)
• Original Assignee: Cardica Incorporated
• Inventors: Hausen, Bernard A.
• Primary Examiner(s): Severson, Ryan
• Assistant Examiner(s): MILES, JONATHAN WADE
• Application Number:
  US12/817,100
• Time in Patent Office: 1,140 Days
• Field of Search: 606/139, 606/142, 606/143, 606/144, 606/151
• US Class Current: 606/142
• CPC Class Codes: A61B 17/064 Surgical staples, i.e. penetrating the tissue
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• CPC Class Codes: A61B 17/10 for applying or removing wound clamps, e.g. containing only one clamp or staple A61B17/076 takes precedence; containing multiple wound clamps A61B17/068; Wound clamp magazines containers, packaging elements or packages specially adapted for particular articles or with special means for dispensing contents B65D83/00, B65D85/00
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00783 Valvuloplasty
• CPC Class Codes: A61B 2017/0645 being elastically deformed for insertion
• CPC Class Codes: A61F 2/2442 Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
• CPC Class Codes: A61F 2/2466 Delivery devices therefor

Abstract

An exemplary surgical apparatus may include a guide catheter including a clip channel, at least one hook channel, and at least one sling channel defined therein; a clip applier movable within the clip channel, wherein the clip applier holds at least one clip; at least one hook movable within a corresponding hook channel; and at least one sling movable within a corresponding sling channel. An exemplary surgical method for treating a mitral valve may include providing a guide catheter; a clip applier held by the guide catheter, and a clip held by the clip applier; introducing the distal end of the guide catheter into the left atrium; engaging the anterior and posterior leaflets of the mitral valve with the clip; closing the clip; and disengaging the clip applier from the clip, whereby the clip remains in the mitral valve. Another exemplary surgical method for treating a valve may include providing a guide catheter; a clip applier held by the guide catheter, and at least one clip held by the clip applier; advancing the guide catheter into proximity to the valve; and applying at least one clip substantially in the middle of the valve to create two orifices, one on each side of the clip.

Claims

1. A surgical method for treating a mitral valve between the left atrium and left ventricle of a heart, the mitral valve including anterior and posterior leaflets, the method comprising:

providing a guide catheter having a first sling channel, a second sling channel, a hook channel and a clip channel, the sling channels and the hook channel positioned radially outward from the clip channel at a distal end of the guide catheter, the clip channel including a clip applier held by said guide catheter, and a clip held by said clip applier;

introducing the distal end of said guide catheter into the left ventricle;

advancing a first sling through the first sling channel and a second sling through the second sling channel from the distal end of the guide catheter from the left ventricle through the mitral valve to engage inner surfaces of the left ventricle;

retracting the guide catheter to the left atrium;

splaying said clip to a splayed configuration;

engaging the anterior and posterior leaflets of the mitral valve with said clip;

closing said clip; and

disengaging said clip applier from said clip, whereby said clip remains in the mitral valve.

2. The surgical method of claim 1, wherein said engaging comprises advancing said splayed clip into the anterior and posterior leaflets of the mitral valve with said clip applier.

3. The surgical method of claim 1, wherein said clip comprises at least three tines, wherein said engaging comprises engaging at least one of said at least three tines with each leaflet of the mitral valve.

4. The surgical method of claim 1, further comprising:

advancing a hook from the distal end of the guide catheter to engage one of the anterior or posterior leaflets after the retracting.

5. The surgical method of claim 1, wherein said providing includes providing the hook channel within said guide catheter and at least one hook held by and retractable into a corresponding said hook channel;

further comprising engaging at least one leaflet of the mitral valve with at least one said hook.

6. The surgical method of claim 5, wherein said engaging at least one leaflet of the mitral valve with at least one said hook comprises sequentially engaging the leaflets with different said hooks.

7. The surgical method of claim 5, further comprising locking at least one said hook after said engaging at least one leaflet of the mitral valve with at least one said hook.

8. The surgical method of claim 1, further comprising:

sliding the guide catheter along extensions of the first sling and the second sling.

9. The surgical method of claim 8, further comprising stretching the mitral valve with at least one said sling before said engaging the anterior and posterior leaflets of the mitral valve with said clip.

10. The surgical method of claim 8, further comprising self expanding each sling.

13. The surgical method of claim 1, wherein the advancing comprises:

centering the distal end of the catheter relative to the mitral valve.

11. A surgical method for treating a valve, the method comprising:

providing a guide catheter having a first sling channel, a second sling channel, a hook channel and a clip channel, the sling channels and the hook channel positioned radially outward from the clip channel, the clip channel including a clip applier held by said guide catheter, and at least one clip held by said clip applier;

advancing a first sling through the first sling channel and a second sling through the second sling channel from the distal end of the guide catheter from the left ventricle through the mitral valve to engage inner surfaces of the left ventricle;

retracting the guide catheter to the left atrium along extensions of the first sling and the second sling;

splaying said clip into a splayed configuration; and

applying at least one clip substantially in the middle of the valve to create two orifices, one on each side of said clip.

12. The surgical method of claim 11, further comprising stretching the valve before said applying.

14. The surgical method of claim 11, further comprising

advancing a hook from the hook channel to engage one of an anterior leaflet or a posterior leaflet after the retracting.