Subcutaneous injection set tubing with solvent bonding

• US 6,673,440 B2
• Filed: 08/30/2001
• Issued: 01/06/2004
• Est. Priority Date: 11/06/2000
• Status: Expired due to Fees

• Current Assignee: ICU Medical Incorporated
• Original Assignee: Sterling Medivations, Inc. (Guided Therapeutics, Inc.)
• Inventors: Nomvra, Hiroshi, Hugo, Robert Louis, Douglas, Joel Sterling
• Primary Examiner(s): NAKARANI, DHIRAJLAL S
• Application Number:
  US09/944,229
• Publication Number:
  US 20020055722A1
• Time in Patent Office: 859 Days
• Field of Search: 156/272.6, 156/293, 156/294, 156/308.6, 156/309.3, 427/2.28, 427/488, 427/491, 428/36.9, 428/36.91, 428/336, 428/422, 428/500, 428/518, 428/520, 428/522
• US Class Current: 428/336
• CPC Class Codes: A61M 25/0014 Connecting a tube to a hub
• CPC Class Codes: A61M 39/12 for joining a flexible tube to a rigid attachment
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• CPC Class Codes: B29C 59/142 of profiled articles, e.g. hollow or tubular articles
• CPC Class Codes: B29C 65/48 using adhesives , i.e. using supplementary joining material; solvent bonding
• CPC Class Codes: B29C 65/484 Moisture curing adhesives
• CPC Class Codes: B29C 66/112 Single lapped joints
• CPC Class Codes: B29C 66/1122 Single lap to lap joints, i.e. overlap joints B29C66/45, B29C66/472, B29C66/52272 take precedence
• CPC Class Codes: B29C 66/1222 comprising at least a lapped joint-segment
• CPC Class Codes: B29C 66/1224 comprising at least a butt joint-segment
• CPC Class Codes: B29C 66/131 Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
• CPC Class Codes: B29C 66/5344 said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends B29C66/5346 takes precedence
• CPC Class Codes: B29C 66/612 Making circumferential joints
• CPC Class Codes: B29C 66/71 characterised by the composition of the plastics material of the parts to be joined welding bar compositions B29C65/125
• CPC Class Codes: B29K 2023/06 PE, i.e. polyethylene
• CPC Class Codes: B29K 2023/0633 LDPE, i.e. low density polyethylene
• CPC Class Codes: B29K 2023/12 PP, i.e. polypropylene
• CPC Class Codes: B29K 2027/06 PVC, i.e. polyvinylchloride
• CPC Class Codes: B29K 2027/18 PTFE, i.e. polytetrafluorethene , e.g. ePTFE, i.e. expanded polytetrafluorethene
• CPC Class Codes: B29K 2069/00 Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
• CPC Class Codes: B29L 2031/7544 : Injection needles, syringes
• CPC Class Codes: C08J 2323/06 : Polyethene
• CPC Class Codes: C08J 2327/18 : Homopolymers or copolymers of tetrafluoroethylene
• CPC Class Codes: C08J 5/122 : using low molecular chemically inert solvents, swelling or softening agents
• CPC Class Codes: Y10T 428/139 : Open-ended, self-supporting conduit, cylinder, or tube-type article
• CPC Class Codes: Y10T 428/1393 : Multilayer [continuous layer]
• CPC Class Codes: Y10T 428/265 : 1 mil or less
• CPC Class Codes: Y10T 428/31544 : Addition polymer is perhalogenated
• CPC Class Codes: Y10T 428/3192 : Next to vinyl or vinylidene chloride polymer
• CPC Class Codes: Y10T 428/31928 : Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31935 : Ester, halide or nitrile of addition polymer

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.

Claims

1. 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

.

2. 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

.

3. 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

.

4. 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

.

5. 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

.