Self flushing luer activated blood sampling devices

• US 20060155213A1
• Filed: 02/23/2006
• Published: 07/13/2006
• Est. Priority Date: 01/10/2005
• Status: Active Grant

• Current Assignee: Edwards Lifesciences Corporation
• Original Assignee: Edwards Lifesciences Corporation
• Inventors: Madonia, James R.
• Granted Patent: US 7,314,452 B2
• Time in Patent Office: Days
• US Class Current: 600/573
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150221 Valves
• 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 5/1535 comprising means for indicating vein or arterial entry A61B5/1545 takes precedence
• CPC Class Codes: A61M 2039/0202 for taking samples
• CPC Class Codes: A61M 2039/229 Stopcocks
• CPC Class Codes: A61M 2205/3344 Measuring or controlling pressure at the body treatment site
• CPC Class Codes: A61M 39/045 pre-slit to be pierced by blunt instrument
• CPC Class Codes: A61M 39/16 having provision for disinfection or sterilisation A61M39/143 takes precedence; methods or apparatus for disinfection or sterilisation A61L2/00
• CPC Class Codes: A61M 39/223 Multiway valves
• CPC Class Codes: A61M 39/225 Flush valves, i.e. bypass valves for flushing line
• CPC Class Codes: F17D 3/10 for taking out the product in the line sampling in general, examining the physical or chemical properties of materials G01N
• CPC Class Codes: Y10T 137/5283 Units interchangeable between alternate locations
• CPC Class Codes: Y10T 137/86871 Plug

Abstract

A blood sampling device for allowing a fluid pressure measurement and a fluid sample to be taken from a patient, having an inlet port configured to receive blood from the patient, an outlet port configured to be coupled to a monitoring channel having an infusion fluid, a sampling port configured for extraction of blood from the patient, a sampling channel configured to self-flush, after extraction, the blood with the infusion fluid, and an auxiliary channel for self-flushing the sampling channel.

Claims

1. A sampling device, comprising:

an inlet port configured to receive a first fluid;

an outlet port configured to be coupled to a monitoring channel having a second fluid;

a sampling port configured for extraction of the first fluid; and

a sampling channel configured to self-flush, after extraction, the first fluid with the second fluid.

2. The sampling device of claim 1 further comprising an auxiliary channel for self-flushing the sampling channel.

3. The sampling device of claim 2 further comprising a paddle coupled to the sampling channel and rotatable to allow the sampling channel to align with the auxiliary channel for self-flushing.

4. The sampling device of claim 2 further comprising a ball valve configured to selectively allow a fluid to flow through the sampling channel or the auxiliary channel.

5. The sampling device of claim 2 wherein the sampling port is configured to allow a needle to draw the first fluid while blocking access to the auxiliary channel.

6. The sampling device of claim 2 further comprising a slide with an opening that selectively allows the flow of the fluid through the sampling channel or the auxiliary channel.

7. The sampling device of claim 2 further comprising a stop cock having a T-shaped passageway that can selectively allow fluid to pass through the sampling channel, the auxiliary channel, or the monitoring channel.

8. The sampling device of claim 7 wherein the stop cock is configured to stop the flow of second fluid when the first fluid is being extracted.

9. The sampling device of claim 7 wherein the stop cock isolates the sampling port from the outlet port.

10. The sampling device of claim 1, wherein the sampling port is configured to receive a syringe.

11. The sampling device of claim 1, wherein the sampling port is configured to receive a cannula.

12. An apparatus for allowing a fluid pressure measurement and a fluid sample to be taken from a patient, comprising:

an inlet port configured to receive a first fluid from the patient;

an outlet port configured to be coupled to a monitoring channel having a second fluid;

a sampling port configured for extraction of the first fluid from the patient;

a sampling channel configured to receive the first fluid during extraction; and

a self-flushing means for cleaning the sampling channel with the second fluid.

13. The apparatus of claim 12, wherein the sampling port is configured to receive a syringe.

14. The apparatus of claim 12, wherein the sampling port is configured to receive a cannula.

15. A blood sampling device, comprising:

an inlet port configured to receive blood from the patient;

an outlet port configured to be coupled to a monitoring channel having an infusion fluid;

a sampling port configured for extraction of blood from the patient;

a sampling channel configured to self-flush, after extraction, the blood with the infusion fluid; and

an auxiliary channel for self-flushing the sampling channel.

16. The blood sampling device of claim 15 further comprising a rotatable paddle coupled to the sampling channel and orients the sampling channel to align with the auxiliary channel for self-flushing.

17. The blood sampling device of claim 15 further comprising a ball valve configured to selectively allow the blood or the infusion fluid to flow through the sampling channel or the auxiliary channel.

18. The blood sampling device of claim 15 wherein the sampling port is configured to allow a needle to draw the blood while blocking access to the auxiliary channel.

19. The blood sampling device of claim 15 further comprising a slide with an opening that selectively allows the flow of blood through the sampling channel or the flow of the infusion fluid through the auxiliary channel.

20. The blood sampling device of claim 15 further comprising a stop cock that can selectively allow fluid to pass through at least one of the sampling channel, the auxiliary channel, or the monitoring channel.