Arterial/venous fluid transfer system

• US 5,203,771 A
• Filed: 05/18/1992
• Issued: 04/20/1993
• Est. Priority Date: 06/26/1989
• Status: Expired due to Fees

• Current Assignee: University of Florida (State University System of Florida)
• Original Assignee: University of Florida (State University System of Florida)
• Inventors: Melker, Richard J., Miller, Gary J.
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): Cermak, Adam J.
• Application Number:
  US07/821,769
• Time in Patent Office: 337 Days
• Field of Search: 604/51-53, 604/82-88, 604/244, 604/246, 604/248, 604/280, 604/283, 604/905, 128/763, 128/764
• US Class Current: 604/508
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150221 Valves
• CPC Class Codes: A61B 5/150389 Hollow piercing elements, e.g. canulas, needles, for piercing the skin
• CPC Class Codes: A61B 5/150473 Double-ended needles, e.g. used with pre-evacuated sampling tubes hollow piercing element tip design A61B5/150396; needle sets for catheters A61M25/06; needles for bringing media into the body A61M5/32
• CPC Class Codes: A61B 5/150503 Single-ended needles hollow piercing element tip design A61B5/150396, needle sets for catheters A61M25/06, needles for bringing media into the body A61M5/32
• CPC Class Codes: A61B 5/150572 Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
• CPC Class Codes: A61B 5/150732 Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube,
• CPC Class Codes: A61B 5/150992 Blood sampling from a fluid line external to a patient, such as a catheter line, combined with an infusion line; blood sampling from indwelling needle sets, e.g. sealable ports, luer couplings, valves tubing connectors and couplings A61M39/00
• CPC Class Codes: A61B 5/153 Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
• CPC Class Codes: A61B 5/154 Devices using pre-evacuated means
• CPC Class Codes: A61M 39/04 having pierceable self-sealing members

Abstract

A fluid transfer system, including a channel member, adapted for connection between an arterial or venus catheter and an IV fluid administration system. The channel member includes a duct and an access port. An adapter including a recessed needle assembly is provided for mounting to the access port of the channel member. A syringe, IV tubing or an evacuated container may be mounted directly to the channel member via the adapter. Safety is substantially enhanced by recessing the needle assembly of the adapter.

Claims

1. A system for transferring fluids to and from a patient'"'"'s circulatory system through a vascular catheter comprising:

(a) a channel member comprising;

(i) a duct extending therethrough, the duct having first and second ends, the first end being adapted to attach to a vascular catheter, the second end being adapted to attach to an intravascular (IV) fluid administration system;

(ii) an access port in flow communication with the duct, the access port being provided with a self-sealing cap and being recessed within a first mounting member;

(b) an adapter, comprising;

(i) a second mounting member for removably mounting the adapter to the access port, wherein the second mounting member is adapted to mate with the first mounting member;

(ii) a housing connected to the second mounting member; and

(iii) a needle assembly comprising a first needle cannula, recessed and enclosed within the second mounting member sufficiently to shield the needle from a user, a first end of the first needle cannula being in flow communication with the housing, whereby when the adapter is mounted to the access port of the channel member, a second end of the first needle cannula pierces the cap of the access port and is placed in flow communication with the access port; and

(c) an integral, manually closable two-way valve disposed within the duct at a location upstream of the access port with reference to the direction of flow of IV fluid through the channel member, and having an open position permitting flow of IV fluid from the IV fluid administration system from the second end to the first end of the duct, and a closed position preventing flow of IV fluid from the IV fluid administration system through the duct;

wherein fluids may be injected into the duct through the access port, and, when the integral valve is closed, fluid may be withdrawn from the duct through the access port without further influx of fluid from upstream of the valve.

2. The fluid transfer system of claim 1, wherein the channel member further comprises first and second parallel finger grip indentations.

3. The fluid transfer system of claim 1, wherein the channel member further comprises a flow diverter disposed inside the duct in line with the access port whereby when fluid channels through the duct of the channeling member turbulence is created and the access port is flushed.

4. The fluid transfer system of claim 1, wherein the housing is adapted to hold a syringe, whereby when a syringe is held in the housing, the first end of the first needle cannula is placed in flow communication with the syringe.

5. The fluid transfer system of claim 1, wherein the housing is adapted to hold IV tubing whereby when IV tubing is held in the housing, the first end of the first needle cannula is placed in flow communication with the IV tubing.

6. The fluid transfer system of claim 1, wherein the needle assembly further includes a second needle cannula, recessed within the housing, a first end of the second needle cannula being in flow communication with the first needle cannula, the second needle cannula further having a resilient sheath, and wherein the housing is adapted to hold an evacuated container, whereby when an evacuated container is held in the housing, the sheath of the second needle cannula is depressed and pierced by a second end of the second needle cannula and the second end of the second needle cannula is placed in flow communication with the evacuated container.

7. The fluid transfer system of claim 6, wherein the needle assembly is removable from the adapter.

8. A method for collecting a blood sample from a patient requiring IV fluid, comprising the steps of:

(a) implanting an arterial or venous catheter into a vein or artery of a patient;

(b) providing an IV fluid administration system;

(c) providing a channel member comprising a duct having first and second ends, the first end being adapted to connect to an intravenous or intraarterial catheter, the second end being adapted to attach to an IV fluid administration system, the channel member further comprising an access port in flow communication with the duct;

(d) connecting the first end of the duct to the catheter implanted in the patient'"'"'s vein or artery and connecting the second end of the duct to the IV fluid administration system;

(e) channeling IV fluid from the IV fluid administration system to the catheter through the duct of the channel member;

(f) providing an adapter comprising a mounting member for connecting to the access port of the channel member, a housing shaped to hold an evacuated container, and a two cannula needle assembly recessed within the mounting member;

(g) stopping the IV fluid from flowing through the channel member;

(h) establishing flow communication between the channel member and the adapter by mounting the adapter to the access port of the channel member whereby a first needle cannula of the needle assembly enters the access port;

(i) then inserting an evacuated container into the housing of the adapter whereby flow communication is established between a second needle cannula of the needle assembly and the evacuated container and blood contaminated with IV fluid is drawn into the evacuated container;

(j) then removing the evacuated container from the adapter; and

(k) thereafter inserting a second evacuated container into the housing of the adapter and establishing flow communication therebetween via the second needle cannula, whereby an uncontaminated blood sample is drawn directly into the second evacuated container.

9. The method of claim 8 wherein the channel member further comprises an integral valve disposed within the duct at a location upstream of the access port with reference to the direction of flow of IV fluid from the IV fluid administration system, whereby IV fluid is stopped from flowing through the channel member when the valve is closed.