Umbilical cord blood extractor

• US 6,059,794 A
• Filed: 04/27/1998
• Issued: 05/09/2000
• Est. Priority Date: 04/16/1997
• Status: Expired due to Fees

• Current Assignee: Cetus Lc
• Original Assignee: Cetus Lc
• Inventors: Webb, Nicholas J.
• Primary Examiner(s): Jackson, Gary
• Assistant Examiner(s): Woo, Julian W.
• Application Number:
  US09/067,510
• Time in Patent Office: 743 Days
• Field of Search: 606/120, 604/4, D 7/665, D 7/666
• US Class Current: 606/120
• CPC Class Codes: A61B 10/0045 Devices for taking samples of body liquids devices for taking blood samples A61B5/15
• CPC Class Codes: A61B 17/122 Clamps or clips , e.g. for the umbilical cord for the vas deferens A61F6/206
• CPC Class Codes: A61B 17/42 Gynaecological or obstetrical instruments or methods ligaturing clamps or clips for the umbilical cord A61B17/122; curettage A61B17/320708; dilators A61M29/00
• CPC Class Codes: A61B 5/150038 for blood from umbilical cord

Abstract

An umbilical cord blood extractor includes a lower tray for receiving the cord and an upper lid for squeezing the cord. The lower tray and upper lid are preferably couplable at one end at pivot locations or a hinge. The lower tray is provided with a longitudinal trough and a distal blood reservoir for collecting blood. The trough is closed at its proximal end and opens into the reservoir at its distal end. A blood collection needle is preferably provided in the lower tray at a lower portion of the reservoir. The upper lid is formed with a preferably proximally to distally tapered, longitudinal protrusion (plunger) sized such that when the upper lid is rotated toward the lower tray, on the pivots or at the hinge, the plunger enters into the trough and squeezes a section of umbilical cord located therein.

Claims

1. An umbilical cord blood extractor for extracting blood from a section of umbilical cord, said blood extractor comprising:

a) a lower member having a longitudinal trough which receives the cut section of umbilical cord and having a reservoir provided at an end of said trough; and

b) an upper member having a protrusion sized and shaped to be at least partially received in said trough,

one of said upper member and said lower member including a pivot at which the other of said upper member and said lower member can rotate relative to said one of said upper member and said lower member,

wherein when said upper member is closed on said lower member, the cut section of the umbilical cord is squeezed between said protrusion and said trough such that blood is extracted out of the umbilical cord.

2. An umbilical cord blood extractor according to claim 1, wherein:

said trough has a drain which opens into said reservoir.

5. An umbilical cord blood extractor according to claim 1, further comprising:

c) a needle coupled to said lower member such that said needle is adapted to permit fluid to flow from said reservoir through said needle.

6. An umbilical cord blood extractor according to claim 5, wherein:

said needle is an 18-20 gauge needle.

7. An umbilical cord blood extractor according to claim 5, wherein:

said reservoir includes a floor surface which is sloped toward said needle.

8. An umbilical cord blood collector according to claim 5, wherein:

at least one of said upper member and said lower member defines a guide for locating an evacuated vial over said needle.

9. An umbilical cord blood extractor according to claim 1, wherein:

at least one of said upper member and said lower member is provided with guide means for guiding an evacuated vial to a location adjacent said reservoir.

11. An umbilical cord blood extractor according to claim 1, wherein:

at least one of said upper member and said lower member is made from a substantially clear material.

3. An umbilical cord blood extractor for extracting blood from a section of umbilical cord, said blood extractor comprising:

a) a lower member having a longitudinal trough which receives the cut section of umbilical cord, said longitudinal trough having a first squeezing surface having a first longitudinal axis; and

b) an upper member having a protrusion sized and shaped to be at least partially received in said trough, said protrusion having a second squeezing surface having a second longitudinal axis,

one of said upper member and said lower member including a pivot at which the other of said upper member and said lower member can rotate relative to said one of said upper member and said lower member,

wherein when said upper member is closed on said lower member, the cut section of the umbilical cord is squeezed between said protrusion and said trough such that blood is extracted out of the umbilical cord, and wherein

when said upper member is in a fully closed position relative to said lower member, said second longitudinal axis of said second squeezing surface of said protrusion is angled relative to said first longitudinal axis of said first squeezing surface of said trough.

4. An umbilical cord blood extractor for extracting blood from a section of umbilical cord, said blood extractor comprising:

a) a lower member having a longitudinal trough which receives the cut section of umbilical cord; and

b) an upper member having a protrusion sized and shaped to be at least partially received in said trough,

one of said upper member and said lower member including a pivot at which the other of said upper member and said lower member can rotate relative to said one of said upper member and said lower member,

wherein when said upper member is closed on said lower member, the cut section of the umbilical cord is squeezed between said protrusion and said trough such that blood is extracted out of the umbilical cord, and wherein

said upper member and said lower member each have a back end, and said back end of at least one of said upper member and said lower member defines an opening through which the section of umbilical cord can be received.

10. An umbilical cord blood extractor for extracting blood from a section of umbilical cord, said blood extractor comprising:

a) a lower member having a longitudinal trough which receives the cut section of umbilical cord; and

b) an upper member having a protrusion sized and shaped to be at least partially received in said trough,

one of said upper member and said lower member including a pivot at which the other of said upper member and said lower member can rotate relative to said one of said upper member and said lower member,

wherein when said upper member is closed on said lower member, the cut section of the umbilical cord is squeezed between said protrusion and said trough such that blood is extracted out of the umbilical cord, and wherein

said lower member has a base portion and lateral walls on either side of said trough, said lateral walls being provided with a plurality of reinforcing indentations.

12. An umbilical cord blood extractor for extracting blood from a section of umbilical cord and providing the blood to an evacuated vial, said blood extractor comprising:

a) a lower member having a longitudinal trough which receives the cut section of umbilical cord and a reservoir at an end of said trough; and

b) an upper member having a protrusion sized and shaped to be at least partially received in said trough,

at least one of said upper member and said lower member being provided with guide means for guiding the evacuated vial to a location adjacent said reservoir,

wherein when said upper member is closed on said lower member, the cut section of the umbilical cord is squeezed between said protrusion and said trough such that blood is extracted out of the umbilical cord.

13. An umbilical cord blood extractor according to claim 12, wherein:

said trough has a drain which opens into said reservoir.

14. An umbilical cord blood extractor according to claim 12, wherein:

said longitudinal trough has a first squeezing surface having a first longitudinal axis, and said protrusion has a second squeezing surface having a second longitudinal axis, and

when said upper member is in a fully closed position relative to said lower member, said second longitudinal axis of said second squeezing surface of said protrusion is angled relative to said first longitudinal axis of said first squeezing surface of said trough.

15. An umbilical cord blood extractor according to claim 12, wherein:

said upper member and said lower member each have a back end, and said back end of at least one of said upper member and said lower member defines an opening through which the section of umbilical cord can be received.

16. An umbilical cord blood extractor according to claim 12, further comprising:

c) a needle coupled to said reservoir and extending into said guide means such that said needle is adapted to permit fluid to flow from said reservoir through said needle and into the evacuated vial.

17. An umbilical cord blood extractor according to claim 16, wherein:

said needle is an 18-20 gauge needle.

18. An umbilical cord blood extractor according to claim 16, wherein:

said guide means shields said needle.

19. An umbilical cord blood extractor according to claim 16, wherein:

said reservoir includes a floor surface which is sloped toward said needle.

20. An umbilical cord blood collector according to claim 12, wherein:

a first of said upper member and said lower member includes a pivot portion at which a second of said upper member and said lower member can rotate relative to said first of said upper member and said lower member.

21. A method of extracting blood from a section of umbilical cord, said method comprising:

a) placing a section of umbilical cord in a tray having a surface and a pivot;

b) rotating a cover about the pivot of the tray to squeeze the section of umbilical cord between the cover and the tray to thereby extract the blood from the section of umbilical cord onto the tray; and

c) collecting the blood.