MULTI-FUNCTION CAPILLARY TUBE SYRINGE WITH RETRACTABLE NEEDLE FOR ARTERIAL BLOOD DRAWING

• US 20180008182A1
• Filed: 07/08/2016
• Published: 01/11/2018
• Est. Priority Date: 07/08/2016
• Status: Abandoned Application

• Current Assignee: Tony Randall Wann
• Original Assignee: Tony Randall Wann
• Inventors: Wann, Tony Randall
• Application Number:
  US15/206,079
• Publication Number:
  US 20180008182A1
• Time in Patent Office: Days
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150236 Pistons, i.e. cylindrical bodies that sit inside the syringe barrel, typically with an air tight seal, and slide in the barrel to create a vacuum or to expel blood
• CPC Class Codes: A61B 5/150534 Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
• CPC Class Codes: A61B 5/150946 Means for varying, regulating, indicating or limiting the speed or time of blood collection

Abstract

Implementations of a capillary tube syringe are provided. In some implementations, a capillary tube syringe comprises an elongated hollow outer tube having a proximal end and a distal end and a needle extending from the first end of the outer tube outside the outer tube and extending inside the outer tube. In some implementations, an elongated hollow capillary tube having a proximal end and a distal end extend along the inside of the outer tube. In some implementations, a normally compressed spring is operatively connected to the needle. In some implementations, the spring is configured to expand when activated to retract the needle inside the elongated hollow tube. In some implementations, the capillary tube diameter is less than or equal to 0.865 inches.

Claims

1. A capillary tube syringe comprising:

an elongated hollow outer tube having a proximal end and a distal end;

a needle extending from the proximal end of the outer tube outside the outer tube and extending inside the outer tube;

an elongated hollow capillary tube having a proximal end and a distal end and extending along the inside of the outer tube; and

a spring operatively connected to the needle wherein the spring is normally compressed and configured to expand when activated to retract the needle inside the elongated hollow tube.

2. The capillary tube syringe of claim 1 wherein the spring is operatively connected to the capillary tube and configured to push a portion of the capillary tube out of the distal end of the outer tube when the compression spring is activated.

3. The capillary tube syringe of claim 1 wherein the capillary tube syringe further comprises one or more capillary tube supports wherein each capillary tube support comprises an opening through its body to receive the capillary tube thereby surrounding the capillary tube and wherein the capillary tube supports are sized so that the outer surface of the capillary tube supports contacts the interior wall of the outer tube.

4. The capillary tube syringe of claim 3 wherein the capillary tube supports are configured to slide along the interior wall of the outer tube when a pulling or pushing force is applied to the capillary tube.

5. The capillary tube syringe of claim 3 wherein the capillary tube supports are configured to remain in place when a pulling or pushing force is applied to the capillary tube.

6. The capillary tube syringe of claim 1 wherein the capillary tube diameter is less than or equal to 0.865 inches.

7. The capillary tube syringe of claim 1 further comprising a stopper positioned on the distal end of the capillary tube and configured to close the opening at the distal end of the capillary tube.

8. The capillary tube syringe of claim 1 wherein a gap exists between the needle and the proximal end of the capillary tube when the spring is in its normally compressed position such that during an arterial blood draw blood fills a portion of the inside of the elongated tube and the capillary tube.

9. The capillary tube syringe of claim 1 wherein the proximal end of the outer tube includes threads configured to attach the syringe to another device.

10. The capillary tube syringe of claim 1 wherein the capillary tube syringe is configured to function as an evacuated tube system such that the capillary tube may remain stationary to extract blood.

11. The capillary tube syringe of claim 1 wherein the capillary tube syringe is configured to function as a syringe such that the capillary tube is pulled back to extract blood.

12. A capillary tube syringe comprising:

an elongated hollow outer tube having a proximal end and a distal end;

a needle extending from the proximal end of the outer tube outside the outer tube and extending inside the outer tube;

an elongated hollow capillary tube having a proximal end and a distal end and extending along the inside of the outer tube; and

one or more capillary tube supports wherein each capillary tube support comprises an opening through its body to receive the capillary tube thereby surrounding the capillary tube and wherein the capillary tube supports are sized so that the outer surface of the capillary tube supports contacts the interior wall of the outer tube.

13. The capillary tube syringe of claim 12 wherein the capillary tube supports are configured to slide along the interior wall of the outer tube when a pulling or pushing force is applied to the capillary tube.

14. The capillary tube syringe of claim 12 wherein the capillary tube supports are configured to remain in place when a pulling or pushing force is applied to the capillary tube.

15. The capillary tube syringe of claim 12 wherein the capillary tube diameter is less than or equal to 0.865 inches.

16. The capillary tube syringe of claim 12 further comprising a stopper positioned on the distal end of the capillary tube and configured to close the opening at the distal end of the capillary tube.

17. The capillary tube syringe of claim 12 wherein a gap exists between the needle and the proximal end of the capillary tube such that during an arterial blood draw blood fills a portion of the inside of the elongated tube and the capillary tube.

18. The capillary tube syringe of claim 12 wherein the proximal end of the outer tube includes threads configured to attach the syringe to another device.

19. The capillary tube syringe of claim 12 wherein the capillary tube syringe is configured to function as an evacuated tube system such that the capillary tube may remain stationary to extract blood.

20. The capillary tube syringe of claim 12 wherein the capillary tube syringe is configured to function as a syringe such that the capillary tube is pulled back to extract blood.