Tissue patch deployment catheter

• US 20010041914A1
• Filed: 07/12/2001
• Published: 11/15/2001
• Est. Priority Date: 11/22/1999
• Status: Abandoned Application

• Current Assignee: Atritech Inc. (Boston Scientific Corporation)
• Original Assignee: Atritech Inc. (Boston Scientific Corporation)
• Inventors: Lesh, Michael D., Roue, Chad C., van der Burg, Erik J., Frazier, Andrew G.C.
• Application Number:
  US09/903,921
• Publication Number:
  US 20010041914A1
• Time in Patent Office: Days
• US Class Current: 606/225
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• 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 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00579 Barbed implements
• CPC Class Codes: A61B 2017/00632 Occluding a cavity, i.e. closing a blind opening
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors for applying suture clamps, clips or locks A61B2017/0488
• CPC Class Codes: A61B 2017/0412 having anchoring barbs or pins extending outwardly from suture anchor body
• CPC Class Codes: A61B 2017/0414 having a suture-receiving opening, e.g. lateral opening lateral eyelet for attaching suture to needle A61B2017/06019
• CPC Class Codes: A61B 2017/0417 T-fasteners
• CPC Class Codes: A61B 2017/0437 the barbs being resilient or spring-like
• CPC Class Codes: A61B 2017/0454 the anchor being crimped or clamped on the suture
• CPC Class Codes: A61B 2017/0458 Longitudinal through hole, e.g. suture blocked by a distal suture knot
• CPC Class Codes: A61B 2017/0464 for soft tissue
• CPC Class Codes: A61B 2017/0472 Multiple-needled, e.g. double-needled, instruments
• CPC Class Codes: A61B 2017/0477 with pre-tied sutures
• CPC Class Codes: A61B 2017/0647 having one single leg, e.g. tacks
• CPC Class Codes: A61F 2/24 : Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body

Abstract

Disclosed is a closure catheter, for patching a tissue opening such as an atrial septal defect, patent foreman ovale, or the left atrial appendage of the heart. The closure catheter carries a deployable patch and a plurality of tissue anchors, which may be deployed to secure the patch to surrounding tissue. Methods are also disclosed.

Claims

1. A deployment catheter for deploying a patch across a tissue aperture, comprising:

an elongate body, having a proximal end and a distal end;

at least one patch support for removably carrying a patch; and

at least one anchor support for removably carrying at least one anchor.

2. A deployment catheter as in

claim 1

, wherein the anchor support is movable between an axial orientation and an inclined orientation with respect to a longitudinal axis of the body.

3. A deployment catheter as in

claim 2

, wherein the anchor support is hingably connected to the patch support.

4. A deployment catheter as in

claim 3

, comprising at least four anchor supports and at least four patch supports.

5. A deployment catheter as in

claim 2

, further comprising a control on the proximal end of the body, wherein the anchor support is movable from the axial orientation to the inclined orientation in response to manipulation of the control.

6. A patch deployment catheter for deploying a patch across an opening, comprising:

an elongate body, having a proximal end and a distal end;

at least two supports on the catheter, movable between an axial orientation and an inclined orientation, each support comprising a proximal section, a distal section, and a hinge in between; and

a control on the catheter for moving the hinge radially outwardly from a first position for introducing the catheter to a site in the body to a second position for deploying the patch at the site;

wherein the supports are in the axial orientation when the hinge is in the first position.

7. A patch deployment catheter as in

claim 6

, wherein the body is flexible.

8. A patch deployment catheter as in

claim 6

, further comprising at least one tissue anchor carried by the proximal section of each support.

9. A patch deployment catheter as in

claim 6

, further comprising at least one patch carried by the distal section of each support.

10. A patch deployment catheter as in

claim 9

, comprising a tissue ingrowth surface on the patch.

11. A patch deployment catheter as in

claim 8

, wherein the proximal section comprises a tube and the tissue anchor is removably carried inside of the tube.

12. A patch deployment catheter as in

claim 11

, further comprising a deployment actuator extending throughout the length of the catheter, and the tissue anchor is advanced distally out of tube in response to axial movement of the actuator.