IP Library › Granted Patent US 8,721,681
Granted Patent B2
US 8,721,681 · App. 12/495,497 · Granted May 13, 2014

Barbed suture in combination with surgical needle

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Quick Facts
Patent No.
US 8,721,681
App. No.
12/495,497
Granted
May 13, 2014
Kind
B2
Abstract

A barbed suture for connecting tissue, and a combination surgical needle with a barbed suture. The suture includes an elongated body and a plurality of barbs projecting from the body. Each barb causes the suture to resist movement in an opposite direction from which the barb faces. The disposition of the barbs on the body may be staggered, twist cut multiple spiral, overlapping, or random. Also, the configuration of the barbs may be a certain spirality angle α, barb cut angle θ, barb cut depth, barb cut length, barb cut distance, corrugated barb underside, arcuate barb base, or varying barb size.

Claims (22)

1. A unidirectional barbed suture for connecting human or animal tissue, said suture comprising:

an elongated body having a generally circular cross section, a longitudinal axis, a cross-sectional distance (SD), a first end and a second end, where a needle having a needle diameter (ND) is attached to the first end; and

a plurality of cuts in the elongated body that provide for a plurality of barbs projecting from the body towards the second end; wherein the barbs are staggered along the body in three sets with 120 degree radial spacing between any two sets; and

a plurality of barbs comprising a configuration wherein a ratio of a barb cut depth (D) to the (SD) is about 0.05 to about 0.6.

2. The barbed suture of claim 1 wherein the ratio of the D to the SD is about 0.1 to 0.55.

3. The barbed suture of claim 2 wherein the ratio of the ND to the SD is less than 1.8.

4. The barbed suture of claim 1 wherein the ratio of the D to the SD is about 0.2 to 0.5.

5. The barbed suture of claim 4 wherein a ratio of a longitudinal distance between adjacent barbs (P) to the SD is about 1.0 to 3.5.

6. The barbed suture of claim 4 wherein a ratio of a barb cut length (L) to the SD is about 0.8 to 1.5.

7. The barbed suture of claim 1 wherein a ratio of a longitudinal distance between adjacent barbs (P) to the SD is about 0.1 to 6.0.

8. The barbed suture of claim 1 wherein a ratio of a longitudinal distance between adjacent barbs (P) to the SD is about 0.5 to 4.5.

9. The barbed suture of claim 1 wherein a ratio of a longitudinal distance between adjacent barbs (P) to the SD is about 1.0 to 3.5.

10. The barbed suture of claim 1 wherein a ratio of a barb cut length (L) to the SD is about 0.2 to 2.

11. The barbed suture of claim 1 wherein a ratio of a barb cut length (L) to the SD is about 0.4 to 1.7.

12. The barbed suture of claim 1 wherein a ratio of a barb cut length (L) to the SD is about 0.8 to 1.5.

13. The barbed suture of claim 1 wherein a ratio of the ND to the SD is less than 3.

14. The barbed suture of claim 1 wherein a ratio of the ND to the SD is less than 2.

15. The barbed suture of claim 1 wherein the ratio of the ND to the SD is less than 1.8.

16. The suture of claim 1 having a size of 0, 2-0 or 3-0.

17. The suture of claim 1 wherein the elongated body is a monofilament.

18. The suture of claim 1 formed from components comprising a synthetic biodegradable polymer.

19. The barbed suture of claim 1 wherein the needle is curved.

Assignments (8)
RELEASE OF SECURITY INTEREST Recorded Apr 12, 2013
From: WELLS FARGO CAPITAL FINANCE, LLC
To: ANGIOTECH PHARMACEUTICALS, INC.; AMERICAN MEDICAL INSTRUMENTS HOLDINGS, INC.; ANGIOTECH AMERICA, INC.; ANGIOTECH BIOCOATINGS CORP.; ANGIOTECH PHARMACEUTICALS (US), INC.; B.G. SULZLE, INC.; MANAN MEDICAL PRODUCTS, INC.; MEDICAL DEVICE TECHNOLOGIES, INC.; QUILL MEDICAL, INC.; SURGICAL SPECIALTIES CORPORATION; ANGIOTECH INTERNATIONAL HOLDINGS CORP.
Reel/Frame 030211/0479 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 27, 2012
From: ANGIOTECH PHARMACEUTICALS, INC.; QUILL MEDICAL, INC.
To: ETHICON, INC.; ETHICON, LLC
Reel/Frame 029294/0443 →
PARTIAL RELEASE OF SECURITY INTERESTS - PATENTS (US) Recorded May 16, 2012
From: WELLS FARGO CAPITAL FINANCE, LLC
To: QUILL MEDICAL, INC.; ANGIOTECH PHARMACEUTICALS, INC.
Reel/Frame 028216/0499 →
PARTIAL RELEASE OF SECURITY INTERESTS - PATENTS (US) Recorded Apr 20, 2012
From: DEUTSCHE BANK NATIONAL TRUST COMPANY
To: QUILL MEDICAL, INC.; ANGIOTECH PHARMACEUTICALS, INC.
Reel/Frame 028078/0699 →
PARTIAL RELEASE OF SECURITY INTEREST - PATENTS Recorded Apr 10, 2012
From: WELLS FARGO CAPITAL FINANCE, LLC
To: QUILL MEDICAL, INC.; ANGIOTECH PHARMACEUTICALS, INC.
Reel/Frame 028022/0861 →
PATENT SECURITY AGREEMENT Recorded May 13, 2011
From: ANGIOTECH PHARMACEUTICALS, INC.; AFMEDICA, INC.; AMERICAN MEDICAL INSTRUMENTS HOLDINGS, INC.; ANGIOTECH AMERICA, INC.; ANGIOTECH BIOCOATINGS CORP.; ANGIOTECH DELAWARE, INC.; ANGIOTECH FLORIDA HOLDINGS, INC.; ANGIOTECH PHARMACEUTICALS (US), INC.; B.G. SULZLE, INC.; MANAN MEDICAL PRODUCTS, INC.; MEDICAL DEVICE TECHNOLOGIES, INC.; NEUCOLL INC.; QUILL MEDICAL, INC.; SURGICAL SPECIALTIES CORPORATION; 0741693 BRITISH COLUMBIA LTD.; ANGIOTECH INTERNATIONAL HOLDINGS, CORP.
To: WELLS FARGO CAPITAL FINANCE, LLC, AS ADMINISTRATIVE AGENT
Reel/Frame 026275/0507 →
SECURITY AGREEMENT Recorded Aug 31, 2009
From: ANGIOTECH PHARMACEUTICALS, INC.; AFMEDICA, INC.; AMERICAN MEDICAL INSTRUMENTS HOLDINGS, INC.; ANGIOTECH AMERICA, INC.; ANGIOTECH BIOCOATINGS CORP.; ANGIOTECH CAPITAL, LLC; ANGIOTECH PHARMACEUTICALS (US), INC.; B.G. SULZLE, INC.; CRIMSON CARDINAL CAPITAL, LLC; MANAN MEDICAL PRODUCTS, INC.; MEDICAL DEVICE TECHNOLOGIES, INC.; NEUCOLL, INC.; QUILL MEDICAL, INC.; SURGICAL SPECIALTIES CORPORATION; 0741693 B.C. LTD.; 3091796 NOVA SCOTIA COMPANY; ANGIOTECH INTERNATIONAL HOLDINGS, CORP.; ANGIOTECH INVESTMENT PARTNERSHIP
To: WELLS FARGO FOOTHILL, LLC, AS AGENT
Reel/Frame 023172/0394 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 30, 2009
From: LEUNG, JEFFREY C.; RUFF, GREGORY L.; MEGARO, MATTHEW A.
To: QUILL MEDICAL, INC.
Reel/Frame 022897/0913 →