Swab for collecting biological specimens

• US 9,173,779 B2
• Filed: 05/21/2013
• Issued: 11/03/2015
• Est. Priority Date: 04/01/2003
• Status: Expired due to Term

• Current Assignee: Copan Italia SpA
• Original Assignee: Copan Italia SpA
• Inventors: Triva, Daniele
• Primary Examiner(s): Dougherty, Sean
• Assistant Examiner(s): CERIONI, DANIEL LEE
• Application Number:
  US13/899,394
• Publication Number:
  US 20130338535A1
• Time in Patent Office: 896 Days
• Field of Search: 600/562, 600/569, 600/572, 600/573, 604 1- 3, 132/218, 132/318, 131/245, 151/030.3, 151/040.5, 151/041.6, 151/042, 435/283.1, 435/307.1, 436/810, 394/562, 394/569, 394/572, 394/573
• US Class Current: 1/1
• CPC Class Codes: A61B 10/0045 Devices for taking samples of body liquids devices for taking blood samples A61B5/15
• CPC Class Codes: A61F 13/38 Swabs having a stick-type handle, e.g. cotton tips ear cleaners other than cotton tips A61F11/006; swabs containing a liquid, e.g. in a rupturable reservoir, A61M35/006
• CPC Class Codes: B01L 2200/087 Ergonomic aspects
• CPC Class Codes: B01L 2300/0832 cylindrical, tube shaped
• CPC Class Codes: B01L 2300/161 Control and use of surface tension forces, e.g. hydrophobic, hydrophilic
• CPC Class Codes: B01L 3/5029 using swabs
• CPC Class Codes: C12M 33/02 by impregnation, e.g. using swabs or loops fluid transport using swabs B01L3/5029

Abstract

The present invention relates to a swab for collecting biological specimens of the type consisting of a rod terminating in a tip covered with fibre with hydrophilic properties to allow absorption of said specimens, wherein said fibers covers said tip in the form of a layer deposited by flocking.

Claims

1. A biological specimen collection swab configured for collecting biological specimen to be analyzed, the swab comprising:

a rod terminating in a tip; and

a layer of fibers disposed on a surface of said tip by flocking with a flocking technique in which the fibers were deposited, in an electrostatic field, in an ordered manner perpendicularly to the surface of the tip of the rod, said layer of fibers having a thickness of 0.6 to 3 mm and being configured to be capable of absorbing a quantity of 40 μ

l of liquid specimen on said tip of the rod by capillarity.

2. The swab according to claim 1 wherein said layer of fibers is configured to be capable of absorbing a quantity of 100 μ

l of liquid specimen on said tip of the rod by capillarity in said layer of fibers.

3. The swab according to claim 1 wherein said layer of fibers is configured to absorb a quantity from 40 μ

l to 100 μ

l of liquid specimen on said tip of the rod by capillarity in said layer of fibers.

4. The swab according to claim 1 wherein said fibers define capillaries conferring hydrophilic properties to the layer of fibers by capillarity.

5. The swab according to claim 1, wherein said layer of fibers is directly deposited on a surface of said tip.

6. The swab according to claim 1, wherein said layer of fibers has a fiber count of 1.7 to 3.3 Dtex.

7. The swab according to claim 1, wherein said rod is a plastic rod and wherein said rod tip is rigid.

8. The swab according to claim 1, wherein said rod is a plastic rod and has a diameter of 1 mm.

9. The swab according to claim 1, wherein said swab is a clinical swab, configured for human clinical collection.

10. The swab according to claim 1, wherein said layer of fibers has a uniform thickness.

11. The swab according to claim 1, wherein said layer of fibers is configured to be capable of releasing 90% of the quantity of specimen absorbed.

12. The swab according to claim 1, wherein said fibers are made of polyester or polyamide.

13. A method of collecting a biological specimen to be analyzed, the method comprising using a swab comprising a rod terminating in a tip in which a layer of fibers is disposed by flocking on a surface of the tip of the rod, with a flocking technique in which the fibers were deposited, in an electrostatic field, in an ordered manner perpendicularly to the surface of the tip of the swab rod, the layer of fibers having a thickness of 0.6 to 3 mm and being configured to absorb a quantity of 40 μ

l of liquid specimen on said tip of the rod by capillarity; and

collecting a specimen to be analyzed by absorbing 40 μ

l of liquid specimen in said layer of fibers disposed on the tip of the rod.

14. The method according to claim 13 wherein said layer of fibers is configured to absorb 100 μ

l of liquid specimen on said tip of the rod and wherein said step of collecting a specimen to be analyzed comprises absorbing 100 μ

l of specimen in said layer of fibers disposed on the tip of the rod.

15. The method according to claim 13 wherein said step of collecting a specimen to be analyzed comprises absorbing a quantity of 40 μ

l to 100 μ

l of specimen in said layer of fibers disposed on the tip of the rod.

16. The method according to claim 13 further comprising the step of storing and transporting said quantity of specimen in said layer of fibers.

17. The method according to claim 13 further comprising the step of releasing a quantity of said specimen to be analyzed from said layer of fibers.

18. The method according to claim 13 further comprising the step of analyzing said quantity of specimen after releasing said specimen from said layer of fibers.

19. The method according to claim 13 the method being carried out by using said swab wherein the fibers of said layer of fibers are directly disposed on said tip of the rod.

20. The method according to claim 13 the method being carried out by using said swab wherein said rod is a plastic rod and has a diameter of 1 mm.

21. The method according to claim 13 the method being carried out by using said swab wherein said layer of fibers has a uniform thickness.

22. The method according to claim 13 the method being carried out by using said swab wherein said fibers are made of polyester.

23. The method according to claim 13 the method being carried out by using said swab wherein said layer of fibers has a fiber count of 1.7 to 3.3 Dtex.

24. The method according to claim 13 wherein said step of collecting a specimen to be analyzed is carried out with said swab during a human clinical collection procedure of a biological specimen to be analyzed.

25. The method according to claim 13 the method being carried out by using a swab wherein said rod is a plastic rod and has a rigid tip.