Vascular closure device anchor

Patent metadata

Field	Value
Publication number	US-9307966-B2
Application number	US-201213586777-A
Country	US
Kind code	B2
Filing date	Aug 15, 2012
Priority date	Aug 15, 2012
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

A bioresorbable anchor for deployment in a live body, in one embodiment the anchor comprises an inner anchor made of a first bioresorbable material and an outer anchor made of a second bioresorbable material, wherein the outer anchor envelops the inner anchor. In another embodiment, the anchor comprises a base anchor made of a first bioresorbable material and a second bioresorbable material overlays at least a portion of the base anchor. The first bioresorbable material has a faster resorption rate than the second bioresorbable material. Further, the second bioresorbable material can provide additional strength to the anchor structure. A tissue puncture closure device comprising a filament extending from a first end of the closure device to a second end of the closure device; an anchor comprising a plurality of bioresorbable materials; a sealing plug slidingly attached to the filament adjacent to the anchor; and a tamping assembly.

First claim

What is claimed is:

1. A bioresorbable anchor for deployment in a live body, the anchor comprising:
an inner anchor comprising a first bioresorbable material, the inner anchor comprising a top surface, a side surface, and an end portion; and
an outer anchor comprising an overmold material, the overmold material comprising a second bioresorbable material;
wherein a first portion of the top surface of the inner anchor and at least a portion of the side surface of the inner anchor are enveloped by the overmold material of the outer anchor;
wherein a second portion of the top surface of the inner anchor and the end portion of the inner anchor are not enveloped by the overmold material of the outer anchor.

2. The anchor of claim 1 wherein the first bioresorbable material has a faster resorbtion rate than the second bioresorbable material.

3. The anchor of claim 1 wherein the second bioresorbable material is less hydrophilic than the first bioresorbable material.

4. The anchor of claim 1 wherein the first bioresorbable material is the same as the second bioresorbable material.

5. The anchor of claim 1 wherein the inner anchor is formed by a process selected from the group consisting of injection-molding, tablet pressing and sintering.

6. The anchor of claim 5 wherein the outer anchor is formed by a process selected from the group consisting of injection-molding material over the inner anchor and coating the inner anchor.

7. The anchor of claim 1 wherein the outer anchor is formed by coating the second bioresorbable material onto the inner anchor.

8. The anchor of claim 7 wherein the second bioresorbable material is coated onto the inner anchor by using a coating process selected from the group consisting of spin coating, dip coating, thin film coating, and vapor deposition coating.

9. The anchor of claim 1 wherein the first bioresorbable material is selected from the group consisting of PEG (polyethylene glycol) hydrogel materials, PDLG (50/50 DL-Lactide/glycolide copolymer), DL-lactide/L-lactide and ε-caprolactone copolymers, triemethylene carbonate, para-dioxanone, lactide polymer, glycolide polymer, polyanhydrides, polyorthoesters, polycarbonates, water soluble monosaccharides, water soluble disaccharides, water soluble salts, water soluble oxyhydroxides, and water soluble oxyhydroxides mixed with magnesium or magnesium alloy.

10. The anchor of claim 1 wherein the second bioresorbable material is selected from the group consisting of poly (L-lactides), poly (DL-lactides), polyglycolides, L-lactide/DL-lactide copolymers, polyethylene glycol, PEG hydrogels, L-lactide/glycolide copolymers, glycolide/caprolactone/lactides, gelatin coatings, pyrolytic carbon, expanded PTFE (polytetrafluoroethylene), biocompatible fabrics or textiles, and tyrosine-derived polycarbonates.

11. A bioresorbable anchor for deployment in a live body, comprising:
a top surface;
a bottom surface;
side surfaces;
an attachment device;
a central portion positioned intermediate two end portions of the anchor, the attachment device being positioned on the top surface at the central portion;
wherein the anchor comprises a first bioresorbable material and a second bioresorbable material, the second bioresorbable material being partially overmolded onto the first bioresorbable material, wherein at least portions of the top and side surfaces of the anchor have the second bioresorbable material externally exposed, and at least some portions of the top surface and end portions of the anchor have the first bioresorbable material externally exposed.

12. The anchor of claim 11 wherein the second bioresorbable material is externally exposed at the central portion of the anchor.

13. The anchor of claim 11 wherein the portions of the side surfaces that have the second bioresorbable material externally exposed include an entirety of at least one of the side surfaces.

14. The anchor of claim 11 further comprising at least one opening formed in the top surface, the at least one opening being configured to receive a suture.

15. The anchor of claim 11 wherein a resorption rate of the first bioresorbable material is different as compared to a resorption rate of the second bioresorbable material.

16. The anchor of claim 11 wherein a resorption rate of the first bioresorbable material is faster than the resorption rate of the second bioresorbable material.

17. The anchor of claim 11 wherein the second bioresorbable material provides additional strength to the anchor.

Assignees

• Tegels Zachary J
• St Jude Medical Puerto Rico

Inventors

• Tegels Zachary J

Classifications

• A61B2017/00831

  Material properties · CPC title

• A61B2017/00659

  located only on one side of the opening · CPC title

• A61B2017/00654

  entirely comprised between the two sides of the opening · CPC title

• A61B17/0057 Primary

  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 title

• A61B2017/00663

  the implement being a suture · CPC title