Subcutaneous injection set tubing with solvent bonding
AssigneeSterling Medivations, Inc.
InventorsJoel Sterling Douglas, Robert Louis Hugo, Hiroshi Nomvra
Life of this patent
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Abstract
The infusion set comprises of a connecting tube of polyethylene which is treated to form a wetable surface or treated with a primer and then bonded to a PVC hub by using solvent adhesive to solvent bond the low density polyethylene tubing or Teflon tubing to a PVC hub. The surface treatment methods include a methane plasma surface that is applied to tubing in a continuous manner and alternatively a primer that is applied locally and dried prior to applying the adhesive. Both techniques form a strong and resilient bond for the infusion needle and tube when assembled to the PVC hubs.
Claims5
A cyanoacrylate adhesive bondable joint comprising:
- a LDPE part having a plasma deposited layer of methane and oxygen gas;
- a cyanoacrylate adhesive applied to the joint;
- a cyanoacrylate adhesive bondable piece in communication with the cyanoacrylate adhesive;
- and
- wherein the plasma polymer layer of methane is at least 10 Å thick but not greater than 2000 Å.
A cyanoacrylate adhesive bondable joint comprising:
- a polytetrafluoroethylene part having a plasma deposited layer of methane and oxygen gas;
- a cyanoacrylate adhesive applied to the joint;
- a cyanoacrylate adhesive bondable piece in communication with the cyanoacrylate adhesive;
- and
- wherein the plasma polymer layer of methane is at least 10 Å thick but not greater than 2000 Å.
A cyanoacrylate adhesive bondable joint comprising:
- a LDPE part having a plasma deposited layer of methane and oxygen gas;
- a cyanoacrylate adhesive applied to the joint;
- a LDPE part having a plasma deposited layer of methane and oxygen gas in communication with the cyanoacrylate adhesive;
- and
- wherein the plasma polymer layer of methane is at least 10 Å thick but not greater than 2000 Å.
A cyanoacrylate adhesive bondable joint comprising:
- a polytetrafluoroethylene part having a plasma deposited layer of methane and oxygen gas
- a cyanoacrylate adhesive applied to the joint;
- a polytetrafluoroethylene part having a plasma deposited layer of methane and oxygen gas in communication with the cyanoacrylate adhesive;
- and
- wherein the plasma polymer layer of methane is at least 10 Å thick but not greater than 2000 Å.
A cyanoacrylate adhesive bondable joint comprising:
- a LDPE part having a plasma deposited layer of methane and oxygen gas;
- a cyanoacrylate adhesive applied to the joint;
- a polytetrafluoroethylene part having a plasma deposited layer of methane and oxygen gas in communication with the cyanoacrylate adhesive;
- and
- wherein the plasma polymer layer of methane is at least 10 Å thick but not greater than 2000 Å.
Dependencies are inferred from the claim text.