Surgical coated needles

Patent metadata

Field	Value
Publication number	US-11832811-B2
Application number	US-202117386741-A
Country	US
Kind code	B2
Filing date	Jul 28, 2021
Priority date	Sep 15, 2017
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

Systems and methods for coating surgical needles are provided.

First claim

What is claimed is:

1. A method for coating a surgical needle, the method comprising:
spray coating a primer coat onto a portion of a surface of a surgical needle blank formed from a tungsten-rhenium alloy, the portion of the surgical needle blank having a tissue-penetrating end;
spray coating a base coat that differs from the primer coat onto a primed surface of the surgical needle blank, the primed surface being the portion of the surface that is sprayed coated with the primer coat;
laser-drilling the surgical needle blank, after spray coating the primer and the base coats, to create a suture attachment end opposite the tissue-penetrating end, thereby forming the surgical needle; and
dip coating a top coat that differs from the base coat onto the base coat and onto the suture attachment end.

2. The method of claim 1 , wherein the top coat is formed from a composition comprising a silicone at a concentration from about 1% to 3% by weight of the composition.

3. The method of claim 1 , further comprising vacuum drying the top coat.

4. The method of claim 3 , further comprising, after vacuum drying, removing at least a portion of solvent from the top coat at a temperature from about 90° C. to 130° C.

5. The method of claim 1 , wherein dip coating the top coat comprises placing the surgical needle in a basket and placing the basket into a top coating solution, the basket having a drainage area that is from 50% to about 95% of a total surface area of the basket.

6. The method of claim 5 , wherein the basket has a base portion, a top portion, and a first and a second pair of opposing sidewalls each extending from the base portion to the top portion, and wherein the base and top portions each include a porous substrate and the sidewalls each include one or more drainage holes.

7. The method of claim 1 , further comprising at least partially curing at least one of the primer coat and the base coat.

Assignees

• Cilag Gmbh Int

Inventors

• Ou Duan Li
• Cichocki Frank
• Nguyen Thien

Classifications

• A61B17/06066 Primary

  Needles, e.g. needle tip configurations · CPC title

• B05D1/02

  performed by spraying · CPC title

• B05D1/18

  performed by dipping · CPC title

• B05D3/06

  by exposure to radiation (B05D3/02 takes precedence {; plasma treatment B05D3/141}) · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title