Multiple sample biopsy device

• US 6,149,607 A
• Filed: 08/04/1998
• Issued: 11/21/2000
• Est. Priority Date: 08/04/1998
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Endonetics, Inc. (Medtronic Plc)
• Inventors: Matsuura, David G., Simpson, Philip J., Kilcoyne, John
• Primary Examiner(s): O'Connor, Cary
• Assistant Examiner(s): MARMOR II, CHARLES ALAN
• Application Number:
  US09/128,882
• Time in Patent Office: 840 Days
• Field of Search: 600/562, 600/564, 600/567, 606/52, 606/167, 606/170, 606/171, 606/174, 606/175, 606/205, 606/206, 606/207, 606/208, 606/209
• US Class Current: 600/567
• CPC Class Codes: A61B 10/06 Biopsy forceps , e.g. with cup-shaped jaws
• CPC Class Codes: A61B 2017/2926 Details of heads or jaws
• CPC Class Codes: A61B 2017/2933 camming or guiding means
• CPC Class Codes: A61B 2017/2939 Details of linkages or pivot points
• CPC Class Codes: A61B 2017/294 Connection of actuating rod to jaw, e.g. releasable
• CPC Class Codes: A61B 2017/320064 with tissue or sample retaining means

Abstract

A biopsy device for acquiring more than one tissue sample comprises an elongated, flexible actuator shaft which is slidable within an outer sleeve. A jaw portion is coupled to the actuator shaft and the outer sleeve in such a manner as to open when the shaft is moved in a first direction relative to the sleeve and close when the shaft is moved in a second direction relative to the sleeve.

Claims

1. A multiple sample biopsy device, comprising:

an elongate body, having a proximal end, a distal end, and an open inner lumen;

a control on the proximal end of the body; and

an articulating tip on the distal end of the body;

the articulating tip comprising a tubular housing, said tubular housing having a slit extending in a proximal direction from a closed distal end thereof, said slit dividing the tubular housing into first and second opposing jaws, the jaws being adapted to move into a least an open and a closed configuration;

the jaws delimiting an interior space when the jaws are in the closed configuration; and

the space being in communication with the open inner lumen.

2. A multiple sample biopsy device as in claim 1, wherein the body comprises an elongate flexible tubular body.

3. A multiple sample biopsy device as in claim 2, wherein the body comprises an elongate flexible tubular spring coil.

4. A multiple sample biopsy device as in claim 1, wherein the body comprises a relatively rigid tubular body.

5. A multiple sample biopsy device as in claim 1, wherein the body comprises an elongate tubular body, and further comprising an actuator element axially movably positioned within the tubular body and connected to the articulating tip, so that axial displacement of the actuator with respect to the tubular body causes the jaws to move between a first medial position and a second lateral position.

6. A multiple sample biopsy device as in claim 1, further comprising a sample collection chamber in a distal portion of the device.

7. A multiple sample biopsy device as in claim 6, wherein the sample collection chamber is defined within a tubular housing, said housing axially movably positioned within the articulating tip.

8. A multiple sample biopsy device as in claim 7, further comprising an actuator element extending axially through the body and connecting to the tubular housing defining the sample collection chamber.

9. A multiple sample biopsy device as in claim 8, wherein the actuator comprises a solid rod.

10. A multiple sample biopsy device as in claim 8, wherein the actuator comprises a tubular element.

11. A multiple sample biopsy device as in claim 6, wherein the sample collection chamber further comprises a sample ejector.

12. A multiple sample biopsy device as in claim 11, wherein the sample ejector comprises a moveable wall positioned in the sample collection chamber.

13. A multiple sample biopsy device as in claim 1, further comprising an elongate central lumen extending axially through the body for permitting communication between the proximal control and the tip.

14. A multiple sample biopsy device as in claim 1, further comprising a tissue piercing element contained within the articulating tip.

15. A multiple sample biopsy device as in claim 14, wherein the tissue piercing element is axially movably positioned within the tip.

16. A multiple sample biopsy device as in claim 14, wherein the tissue piercing element comprises a helical coil.

17. A multiple sample biopsy device as in claim 1, wherein each of the first and second jaws is provided with a limit surface on a proximal portion thereof, for contacting the outer surface of the tip to limit lateral rotation of the jaws.

18. A multiple sample biopsy device as in claim 1, wherein each of the first and second opposing jaws is connected to the tubular housing by a flexual element.

19. A cutter tip for mounting on the distal end of a biopsy device, the tip comprising:

a tubular housing having a proximal end and a closed distal end, the distal end of the tubular housing axially bisected into first and second jaw portions by a proximally extending cut therethrough;

a tubular sample collection container axially movably positioned within the housing; and

a moveable connection between the tubular sample container and the first and second jaws such that axial displacement of the tubular sample collection container in a first direction causes the first and second jaws to move laterally away from each other, and axial displacement of the tubular sample container in a second axial direction causes the first and second jaws to advance medially towards each other.

20. A cutting tip as in claim 19, wherein each of the first and second jaws further comprises a flexual element extending between the tubular housing and the jaw.

21. A cutting tip as in claim 20, wherein the flexual member is intregally formed with the jaw and tubular housing.

22. A method of making a cutting tip for use in a medical instrument, comprising the steps of:

providing a tube having a closed distal end and an inner lumen;

cutting the tube from the closed distal end in a proximal direction to divide a portion of the tube into first and second opposing jaws, the jaws delimiting an interior space when the jaws are in a closed configuration, and the space being in communication with the inner lumen;

positioning an actuator within the inner lumen of the tube; and

connecting a portion of each jaw to the actuator so that axial displacement of the actuator produces lateral movement of at least one of the jaws.

23. A multiple sample biopsy device, comprising:

an elongate body, having a proximal end and a distal end;

a control on the proximal end of the body;

an articulating tip on the distal end of the body;

the articulating tip comprising a tubular housing having first and second opposing jaws integrally formed with the housing; and

a sample collection chamber in a distal portion of the device, wherein the sample collection chamber is defined within a tubular housing, said housing axially movably positioned within the articulating tip.

24. A multiple sample biopsy device as in claim 23, wherein the body comprises an elongate flexible tubular body.

25. A multiple sample biopsy device as in claim 24, wherein the body comprises an elongate flexible tubular spring coil.

26. A multiple sample biopsy device as in claim 23, wherein the body comprises a relatively rigid tubular body.

27. A multiple sample biopsy device as in claim 23, wherein the body comprises an elongate tubular body, and further comprising an actuator element axially movably positioned within the tubular body and connected to the articulating tip, so that axial displacement of the actuator with respect to the tubular body causes the jaws to move between a first medial position and a second lateral position.

28. A multiple sample biopsy device as in claim 23, further comprising an actuator element extending axially through the body and connecting to the tubular housing defining the sample collection chamber.

29. A multiple sample biopsy device as in claim 28, wherein the actuator comprises a solid rod.

30. A multiple sample biopsy device as in claim 28, wherein the actuator comprises a tubular element.

31. A multiple sample biopsy device as in claims 23, further comprising an elongate central lumen extending axially through the body for permitting communication between the proximal control and the tip.

32. A multiple sample biopsy device as in claim 23, further comprising a tissue piercing element contained within the articulating tip.

33. A multiple sample biopsy device as in claim 32, wherein the tissue piercing element is axially movably positioned within the tip.

34. A multiple sample biopsy device as in claim 32, wherein the tissue piercing element comprises a helical coil.

35. A multiple sample biopsy device as in claim 23, wherein the sample collection chamber further comprises a sample ejector.

36. A multiple sample biopsy devices as in claim 35, wherein the sample ejector comprises a moveable wall positioned in the sample collection chamber.

37. A multiple sample biopsy devices as in claim 23, wherein each of the first and second jaws is provided with a limit surface on a proximal portion thereof, for contacting the outer surface of the tip to limit lateral rotation of the jaws.

38. A multiple sample biopsy device as in claim 23, wherein each of the first and second opposing jaws is connected to the tubular housing by a flexual element.