Injection site with check valve inlet

• US 4,405,316 A
• Filed: 04/03/1978
• Issued: 09/20/1983
• Est. Priority Date: 04/03/1978
• Status: Expired due to Term

• Current Assignee: Baxter Travenol Laboratories Incorporated
• Original Assignee: Baxter Travenol Laboratories Incorporated
• Inventors: Mittleman, Herbert
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US05/892,766
• Time in Patent Office: 1,996 Days
• Field of Search: 128/214 R, 128/214 C, 128/214.2, 128/227, 210/DIG. 23, 210/436, 604/82-86, 604/247
• US Class Current: 604/86
• CPC Class Codes: A61M 39/04 having pierceable self-sealing members

Abstract

A check valve housing is rigidly attached to the first inlet of an injection site having a body portion, a first inlet, a second inlet and an outlet. The check valve housing encloses a duckbill valve member and has an interior wall which securely and frictionally engages a portion of the external surface of the duckbill valve member.

Claims

1. In an injection site having a body portion, a first inlet, a second inlet with a self-sealing, pierceable member located therein and an outlet, the improvement comprising, in combination:

a check valve housing rigidly attached to said first inlet, said check valve housing enclosing a check valve member which acts to permit fluid flow in only one direction; and

said housing having an interior wall which securely and frictionally engages a portion of the external surface of the check valve member, said housing comprising a lower member;

means attaching the lower member to said first inlet; and

an upper member;

means connecting said upper member to said lower member, said upper member and said lower member cooperating to provide indicium of a proper and secure connection between said upper and lower members.

2. A device as described in claim 1, said indicium comprising a measurable gauge slot defined by said upper and lower members.

3. A device as described in claim 1, said lower member having an angled portion which cooperates with said upper member to become forced against the exterior of said check valve member when said lower and upper members are assembled, to aid in preventing the check valve member from separating from the housing.

4. In an injection site having a body portion, a first inlet, a second inlet with a self-sealing, pierceable member located therein and an outlet, the improvement comprising, in combination:

a check valve housing rigidly attached to said first inlet, said check valve housing enclosing a check valve member which acts to permit fluid flow in only one direction; and

said housing having an interior wall which securely and frictionally engages a portion of the external surface of the check valve member, including means rigidly attaching said check valve housing to said first inlet, said attaching means comprising an annularly slotted bottom housing portion with a complementary annular rim, carried by said first inlet, being located within said annular slot;

said bottom housing portion and rim being fused together.

5. In an injection site having a body portion, a first inlet, a second inlet with a self-sealing, pierceable member located therein and an outlet, the improvement comprising, in combination:

a check valve housing rigidly attached to said first inlet, said check valve housing enclosing a duckbill valve member which acts to permit fluid flow in only one direction;

said housing having an interior wall which securely and frictionally engages a portion of the external surface of the duckbill valve member;

said housing comprising a lower member, means attaching the lower member to said first inlet, and an upper member;

means connecting said upper member to said lower member, said upper member and said lower member cooperating to provide indicium of a proper and secure connection between said upper and lower members, said indicium comprising a measurable gauge slot defined by said upper and lower members;

said housing having an interior top wall which abuts the top of said duckbill valve member, said interior top wall including a downwardly extending annular rib for engaging securely the top of said duckbill valve member;

and

said lower member having an angled portion which cooperates with said upper member to become forced against the exterior of said duckbill valve member when said lower and upper members are assembled, to aid in preventing the duckbill valve member from separating from the housing.

6. A device as described in claim 5, including means rigidly attaching said check valve housing to said first inlet, said attaching means comprising an annularly slotted bottom housing portion with a complementary annular rim, carried by said first inlet, being located within said annular slot;

said bottom housing portion and said rim being fused together.