Manifold for a two barrel syringe

• US 5,314,412 A
• Filed: 05/16/1991
• Issued: 05/24/1994
• Est. Priority Date: 04/17/1991
• Status: Expired due to Fees

• Current Assignee: Novo Nordisk A/S
• Original Assignee: Novo Nordisk A/S
• Inventors: Rex, Jorn
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): MCDERMOTT, CORRINE MARIE
• Application Number:
  US07/701,236
• Time in Patent Office: 1,104 Days
• Field of Search: 604/82, 604/85, 604/86, 604/187, 604/191, 604/200, 604/201, 604/239-241, 604/232, 604/234, 604/272, 604/206, 604/88, 128/762, 222/129, 222/137, 222/145
• US Class Current: 604/191
• CPC Class Codes: A61M 5/19 having more than one chamber , e.g. including a manifold coupling two parallelly aligned syringes through separate channels to a common discharge assembly surgical glue applicators A61B17/00491
• CPC Class Codes: A61M 5/24 Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic ampoules or carpules A61J1/06
• CPC Class Codes: A61M 5/2448 comprising means for injection of two or more media, e.g. by mixing

Abstract

The invention relates to an apparatus for simultaneous injection of two different kinds of preparations in a preset proportion.

Claims

1. Manifold for a two-barrel pen syringe for administering two different kinds of medicine, said syringe having two parallel cartridges each containing a different kind of medicine and each sealed at their outlet end with a rubber membrane, said manifold comprising:

a molded plastic body;

a mixing chamber being formed as a cavity within said plastic body;

a first, second and third needle each having two ends, a first sharp end and a second end opening into said mixing chamber;

said mixing chamber being open at one end thereof for one end of said first and second needles, the other end of the mixing chamber being closed by a membrane through which one end of said third needle must pass to open into said cavity;

said first and second needles being embedded in said molded plastic body and having said first sharp ends project from one side of said molded plastic body with a spacing bringing them in a position to pierce rubber membranes of cartridges in a syringe when the manifold is mounted thereon; and

said third needle having its first sharp end project outside of said molded plastic body from a side opposite the sharp ends of said first and second needles.

2. Manifold according to claim 1 wherein said body further comprises a thread for receiving a hub and said third needle one end of which pierces the membrane closing the cavity.

3. Manifold according to claim 2, wherein the membrane is fixed over the cavity by a needle guide having an opening corresponding to the opening of the mixing chamber.