System for the sterile mixing of materials

• US 4,434,822 A
• Filed: 10/27/1981
• Issued: 03/06/1984
• Est. Priority Date: 11/05/1979
• Status: Expired due to Term

• Current Assignee: Baxter Travenol Laboratories Incorporated
• Original Assignee: Baxter Travenol Laboratories Incorporated
• Inventors: Bellamy, David, Smith, Dale A.
• Primary Examiner(s): Bell, Jr., Houston S.
• Application Number:
  US06/315,399
• Time in Patent Office: 861 Days
• Field of Search: 141/1, 141/98, 141/114, 141/311 R, 141/392, 141/279, 141/382-386, 141/346-362, 141/285-310, 141/19, 141/329, 141/330, 128/214 R, 128/214.2, 128/247, 156/250-253, 156/261, 156/272, 156/289, 156/82, 156/304, 156/306, 285/31, 285/DIG. 16, 222/80, 604/7, 604/48, 604/410-412
• US Class Current: 141/98
• CPC Class Codes: A61J 1/10 Bag-type containers
• CPC Class Codes: A61J 1/1475 Inlet or outlet ports
• CPC Class Codes: A61J 1/201 having one piercing end
• CPC Class Codes: A61J 1/2013 having two piercing ends
• CPC Class Codes: A61J 1/2089 Containers or vials which are to be joined to each other in order to mix their contents combinations of vial and syringe for mixing their contents A61J1/2096

Abstract

A fluid transfer assembly includes first and second connector members, each associated with a fluid conduit and having a meltable wall which normally seals the connector member, and thus the associated conduit. The connector members can be coupled together, with the meltable walls positioned in facing contact. One of the meltable walls includes a radiant energy absorbing material. The other meltable wall is relatively non-absorbant of radiant energy, but does conduct heat energy. By exposing the coupled assembly to a source of radiant energy, the one wall melts in response to thermal radiation, while the other wall conducts heat energy from the melting wall to also melt. By melting, the walls open a fluid path between the fluid conduits.

Claims

1. In a fluid transfer assembly usable to interconnect and establish a fluid path between two locations,

the transfer assembly being of the type having a first fluid conduit including at one end thereof a first connector member having first meltable wall means for normally sealing said first connector member, and thus said associated conduit end, from the exterior,

a second fluid conduit including at one end thereof a second connector member having second meltable wall means for normally sealing said second connector, and thus said associated conduit end from the exterior, and

means for coupling said first and second connector means together with said first wall means held in facing contact with said second wall means while the coupled assembly is exposed to a source of radiant energy, the improvement comprising

one of said wall means includes a material which absorbs a sufficient quantity of the radiant energy so that, solely in response to its exposure to the radiant energy source, said one wall means is heated to its melting point to open said associated connector member, and

the other one of said wall means consists essentially of a material which, while said one wall means is being heated to its melting point by exposure to the radiant energy source, does not absorb a sufficient quantity of the radiant energy to melt said other wall means but which does conduct a sufficient quantity of heat energy from said one wall means during melting thereof to concurrently heat said other wall means to its melting point to also open said associated connector member,

whereby, during exposure of the coupled assembly to the radiant energy source, both of said wall means are opened by melting, one in response to thermal radiation and the other in response to thermal conduction, to open a fluid path between said fluid conduits.

2. In a A fluid transfer assembly according to claim 1

wherein the first and second connector members each includes a body which is adapted for attachment to the associated conduit and to which said respective wall means is attached, and

wherein said improvement further comprises only one of said bodies being made of a material which, compared to said material of said one wall means, is relatively non-absorbant of radiant energy to permit, while the coupled assembly is exposed to the source of radiant energy, the passage of radiant energy from the source to said one wall means, the other one of said bodies being made of a material which, like said material of said one wall means, absorbs the radiant energy.

3. A fluid transfer assembly according to claim 1 or 3

wherein both of said wall means have a crystalline melting point above 200°

C.