Fluid control element for biopsy apparatus

• US 20060129062A1
• Filed: 02/10/2006
• Published: 06/15/2006
• Est. Priority Date: 11/06/2000
• Status: Active Grant

• Current Assignee: Suros Surgical Systems Incorporated (Hologic Incorporated)
• Original Assignee: Suros Surgical Systems Incorporated (Hologic Incorporated)
• Inventors: Mark, Joseph L., Nicoson, Zachary R., Hardin, Terry D.
• Granted Patent: US 7,837,630 B2
• Time in Patent Office: Days
• US Class Current: 600/566
• CPC Class Codes: A61B 10/025 for taking bone, bone marrow or cartilage samples
• CPC Class Codes: A61B 10/0283 with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe A61B10/025, A61B10/0266 take precedence
• CPC Class Codes: A61B 17/3498 Valves therefor, e.g. flapper valves, slide valves haemostasis valves A61M39/06; check valves A61M39/24
• CPC Class Codes: A61B 2010/0208 Biopsy devices with actuators, e.g. with triggered spring mechanisms
• CPC Class Codes: A61B 2017/00973 pedal-operated
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system

Abstract

A fluid control element having a flexible member that is adapted for selective deformation when an element inserted therein. The flexible member includes at least one incision or opening that defines at least one cusp that selectively opens when the element is inserted therein. The incision or opening is biased into a normally and substantially closed position such that fluids are substantially prevented from flowing through the fluid control element.

Claims

1. A fluid control element for a biopsy device, comprising:

a flexible member connected to the biopsy device and adapted for selective deformation when an element of the biopsy device is inserted therein;

wherein said member includes at least one incision that defines at least one cusp that selectively opens when said element is inserted therein, said incision being biased in a normally and substantially closed position to substantially prevent fluids and materials from flowing out of the biopsy device.

2. An element according to claim 1, wherein said flexible member is constructed of an elastomer material.

3. An element according to claim 1, wherein said at least one incision forms four cusps.

4. An element according to claim 1, wherein said at least one incision forms three cusps.

5. An element according to claim 1, wherein said at least one incision forms two cusps.

6. An element according to claim 1 wherein said member has an elongated profile.

7. An element according to claim 6, wherein said elongated profile tapers from a distal end to a proximal end.

8. An element according to claim 6, wherein said elongated profile has a diameter that is substantially the same from a first end to a second end.

9. An element according to claim 8, wherein said first end is normally closed and includes said at least one incision therein and said second end is open.

10. An element according to claim 6, wherein said element includes a flexible body member and a normally closed valve component that includes said at least one incision.

11. An element according to claim 10, wherein said body member is defined by a first end and a second end, wherein a central opening extends between said first and second ends and said valve component is positioned to substantially cover said first end.

12. An element according to claim 1, wherein said member has a disk shaped profile.

13. An element according to claim 1, wherein said at least one incision is in the form of a substantially closed opening positioned approximately in the center of said element.

14. A fluid control element for a biopsy device, comprising:

a flexible member connected to the biopsy device and adapted for selective deformation when an element of the biopsy device is inserted therein;

wherein said member includes an outer ring portion and a central portion that includes at least one opening that is normally open when said member is in an uncompressed position, said opening being substantially closed off when said member is in a compressed position.

15. An element according to claim 14, wherein said central portion has an upwardly extending concave configuration.

16. An element according to claim 15, wherein there are two of said openings positioned on either side of said central portion.

17. A biopsy device comprising:

a housing having a distal end and a proximal end;

an outer cannula disposed in said housing;

an inner cannula slidably disposed within said outer lumen and defining an inner lumen; and

at least one fluid control member disposed within said housing.

18. A device according to claim 17, wherein said fluid control member includes at least one incision defining an opening therethrough that is normally closed.

19. A device according to claim 18, further including two incisions that bisect each other at approximate right angles so as to form a cross-shape.

20. A device according to claim 18, further including three incisions that intersect each other so as to form a tricuspid shape.

21. A device according to claim 17, wherein said at least one fluid control member is positioned within said inner cannula.

22. A device according to claim 21, wherein said inner cannula has at least one notch in which to secure said fluid control element.

23. A device according to claim 21, wherein said inner cannula has at least one projection that secures said second fluid control element to said inner cannula member.

24. A device according to claim 17, further including an outer cannula hub positioned adjacent to a distal end of said housing, and wherein said fluid control element is disposed within said outer cannula hub.

25. The biopsy device of claim 17, further including a collection trap connected to a proximal end of said housing, wherein said at least one fluid control element is connected to said collection trap.

26. The biopsy device of claim 25, wherein said at least one fluid control element is disposed within a pilot port formed in an end of said collection trap.

27. The biopsy device of claim 26, wherein said at least one fluid control element has an elongated profile that tapers from a first diameter at a distal end to a second diameter that is smaller than said first diameter at a proximal end.

28. The biopsy device of claim 25, wherein said collection trap includes a selectively removable cap that secures to an end of said collection trap, wherein said at least one fluid control element is positioned between said cap and said collection trap.

29. The biopsy device of claim 28, wherein said fluid control element includes an outer ring, a central selectively deformable portion and at least one opening, wherein said central selectively deformable portion is deformable between a closed position where said at least one opening is substantially closed, and an open position, wherein said at least one opening is open so as to permit fluid to pass therethrough.

30. The biopsy device of claim 17, wherein said housing includes an open proximal end to which a collection trap is selectively secured, wherein said at least one fluid control element is positioned within said open proximal end of said housing, said fluid control element being normally closed when said collection trap is not secured to said proximal end of said housing, and where said fluid control element is selectively deformable so as to be open and permit fluid flow therethrough when said collection trap is secured to said proximal end of said housing.

31. The biopsy device of claim 30, wherein said fluid control element includes a flexible body member and a normally closed valve component secured thereto that has said at least one normally closed incision therein.

32. The biopsy device of claim 31, wherein said body portion further includes a mounting flange.

33. The biopsy device of claim 31, wherein said body portion further includes a neck member, said neck member being sized so as to be receivable within an aspiration passageway positioned within said housing.

34. The biopsy device of claim 17, wherein said body portion further includes a selectively movable aspiration tube having an open proximal end and wherein said at least one fluid control element is positioned over said proximal end of said aspiration tube, said at least one fluid control element being normally closed so as to substantially limit fluid from passing therethrough.

35. The biopsy device of claim 34, wherein said fluid control element includes an elongated sleeve defined by an open first end that is sized to receive said aspiration tube and a second end that is normally closed.

36. The biopsy device of claim 35, wherein said second end includes at least one incision therein.

37. The biopsy device of claim 17, wherein said device includes at least two fluid control elements.