Profile connection

Patent metadata

Field	Value
Publication number	US-11904552-B2
Application number	US-202016918322-A
Country	US
Kind code	B2
Filing date	Jul 1, 2020
Priority date	Jul 1, 2019
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

A connection including a first profile having a first end and a first lumen, the first profile including a first polymeric material and a second profile having a second end and a second lumen, the second profile including a second polymeric material, a metal, or combination thereof, wherein the first end and the second end are coincidently welded via an ionized gas treatment.

First claim

What is claimed is:

1. A connection comprising a first profile having a first end and a first lumen, the first profile comprising a first polymeric material comprising a thermoset silicone elastomer material and a second profile having a second end and a second lumen, the second profile comprising a second thermoset silicone elastomer material, wherein the first end and the second end are coincidently welded at an interface via an ionized gas treatment to form a sterile coincidental weld.

2. The connection in accordance with claim 1 , wherein the first silicone elastomer thermoset material and the second silicone elastomer thermoset material comprises a silicone matrix material wherein the first silicone elastomer thermoset material and the second silicone elastomer thermoset material are the same silicone matrix material.

3. The connection in accordance with claim 1 , wherein the first silicone elastomer thermoset material and the second silicone elastomer thermoset material comprises a silicone matrix material wherein the first silicone elastomer thermoset material and the second silicone elastomer thermoset material are different silicone matrix materials.

4. The connection in accordance with claim 1 , wherein the first polymeric material of the first profile consists essentially of the thermoset silicone elastomer material.

5. The connection in accordance with claim 1 , wherein the second profile consists essentially of the thermoset silicone elastomer material.

6. The connection in accordance with claim 1 , wherein the first profile comprises a first tube and the second profile comprises a second tube.

7. The connection in accordance with claim 1 , wherein the first profile comprises a tubing, a port, a connector, a hose, a needle, a nozzle, or combination thereof.

8. The connection in accordance with claim 1 , wherein the coincidental weld is a circumferential seal.

9. The connection in accordance with claim 1 , wherein the coincident weld withstands a seal integrity pressure test of at least 1 psi, such as at least 5 psi, such as at least 10 psi, such as at least 15 psi, or even at least 20 psi air pressure for about 30 minutes under dry and wet conditions.

10. The connection in accordance with claim 1 , wherein the first profile and the second profile have the same wall thicknesses.

11. The connection in accordance with claim 1 , wherein the first profile and the second profile have different wall thicknesses.

12. The connection in accordance with claim 1 , wherein the coincidental weld has a tensile strength between the first profile and the second profile of at least about 10 psi, such as at least about 50 psi, or even at least 300 psi.

13. The connection in accordance with claim 1 , wherein the first profile has a wall thickness of about 0.02 inches to about 4.0 inches.

14. The connection in accordance with claim 1 , wherein the second profile has a wall thickness of about 0.02 inches to about 4.0 inches.

15. The connection in accordance with claim 1 , wherein the interface has a surface tension of greater than about 20 mN/m.

16. The connection in accordance with claim 1 , wherein the second profile comprises a tubing, a port, a connector, a hose, a needle, a nozzle, or combination thereof.

17. A sterile connection comprising a first tube having a first end and a first lumen, the first tube comprising a first polymeric material comprising a thermoset silicone elastomer and a second tube having a second end and a second lumen, the second tube comprising a thermoset silicone elastomer material, wherein the first end and the second end are coincidently welded at an interface via an ionized gas treatment, wherein the ionized gas treatment provides a sterile coincidental weld between the first tube and the second tube.

Assignees

• Saint Gobain Performance Plastics Corp

Inventors

• Zhang Jianfeng
• Pytel Rachel Z
• Ding Jian L

Classifications

• B29C65/1432 Primary

  direct heating of the surfaces to be joined · CPC title

• A61M39/00

  Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use (for respiratory devices, e.g. tracheal tubes A61M16/00; artificial heart valves A61F2/24) · CPC title

• B29C66/00143

  Active gases · CPC title

• B29C66/71

  characterised by the composition of the plastics material of the parts to be joined (welding bar compositions B29C65/125) · CPC title

• B29C66/73921

  characterised by the materials of both parts being thermoplastics · CPC title