Medical instrument for accessing a breast duct for performing a medical procedure
View Patent ↗A medical instrument including a ductal access device comprising a low profile, ergonomic manifold hub usable to introduce fluids into a breast duct and collect ductal fluid samples including ductal epithelial cells and clumps of ductal epithelial cells from within a breast duct. The ductal access device also comprises an elongated access catheter having a distal end, one lumen and dimensions which permit introduction of the distal end through a ductal orifice so that a distal end of the catheter may be positioned distal to the ductal sphincter of a human breast. The medical instrument may also include at least one spacing member for adjustably positioning the manifold hub a desired distance above the surface of the nipple. The spacing member may control the insertion depth of the catheter into the duct. The medical instrument may also include at least one member for anchoring the device to the breast.
1. A device for being introduced and positioned within a breast duct for introducing or removing material within the breast duct, said apparatus comprising:
a manifold hub comprising a plurality of port openings in fluid communication with an interior of said manifold hub, at least two of said openings being in fluid communication with a pair of elongated channels that extend through a portion of said manifold hub;
a catheter extending from the manifold hub, said catheter being sized and configured for positioning within a breast duct; and
a retractable spacer that may be moved in a direction parallel to the length of the catheter to space the manifold hub a distance above the surface of a nipple;
wherein said catheter includes a longitudinal axis; and said manifold hub includes a height that extends substantially parallel to said longitudinal axis of said catheter and a length that extends substantially perpendicular to said longitudinal axis of said catheter, wherein said length of said manifold hub is greater than the height of said manifold hub.
2. The device of claim 1 wherein said plurality of ports of said manifold hub comprises at least four ports in fluid communication with an interior of said manifold hub, and wherein said pair of channels form a portion of said manifold hub.
3. The device of claim 1 wherein said catheter extends from a first end of said manifold hub, and further comprising a sealing fitting positioned at a second end of said manifold hub opposite said catheter, said sealing fitting including an aperture that may be repeatedly opened and closed.
4. The device of claim 3 wherein said sealing fitting includes a Touhy-Borst fitting for sealing about a member extending through said manifold hub at said second end of said manifold hub.
5. The device of claim 4 wherein said Touhy-Borst fitting comprises a silicone plug comprising said aperture and a threaded cap such that when said cap is turned in a first direction, the silicone plug is altered and a size of said opening within said silicone plug is reduced, thereby forming a seal about said member extending through said manifold hub.
6. The device of claim 1 further including an anchoring member secured to manifold hub for securing the apparatus to the body of a patient.
7. The device of claim 6 wherein said anchoring member has a lower surface for contacting the body of the patient, and said lower surface includes a biocompatible adhesive.
8. The device of claim 1 further comprising a source of negative pressure in communication with said manifold hub for directing a ductal fluid sample from within said manifold hub to a ductal fluid collection receptacle.
9. The device of claim 8 wherein said source of negative pressure comprises a powered vacuum source in fluid communication with said manifold hub.
10. The device of claim 8 wherein said source of negative pressure comprises a mechanically controlled negative pressure source in fluid communication with said manifold hub.
11. The device of claim 1 further comprising a fluid container for holding a fluid being delivered to the breast duct, a fluid infusion member for delivering fluid from said fluid container to said manifold hub, a ductal fluid collection receptacle and a ductal fluid collection member extending between said manifold hub and said collection receptacle for delivering ductal fluid samples from said manifold hub to said collection receptacle.
12. The device of claim 11 wherein said fluid container includes a fluid bag for housing a biocompatible fluid, said fluid bag being positionable vertically above said manifold hub for delivering the biocompatible fluid to said manifold hub.
13. The device of claim 11 wherein said fluid infusion member includes a syringe.
14. The device of claim 11 wherein said ductal fluid collection receptacle includes a syringe.
15. The device of claim 11 wherein said ductal fluid collection receptacle includes a fluid collection bag for being vertically spaced below said manifold hub to receive a ductal fluid sample from within said manifold hub.
16. The device of claim 11 wherein said fluid infusion member and/or said ductal fluid collection member includes a one-way check valve.
17. The device of claim 1 wherein said catheter includes a microcatheter having a lubricious coating that allows said catheter to be easily introduced into the breast duct openings.
18. The device of claim 17 wherein said lubricious coating may include a lubricant, a cleaning agent, anesthetic and/or a dilating agent.
19. The device of claim 17 wherein a proximal end of said microcatheter includes an atraumatic tip.
20. The device of claim 1 wherein said manifold hub is formed of a transparent material.
21. The device of claim 20 wherein said transparent material includes an ABS plastic.
22. The device of claim 1 wherein said spacer comprises at least two telescoping members extending between the manifold hub and a portion of the catheter.
23. The device of claim 1 wherein said spacer includes a member that is moveable relative to the manifold hub such that a portion of the manifold hub is received within said moveable member.
24. The device of claim 1 wherein said manifold hub includes vertical sidewalls with recesses for receiving fingers of a practitioner or attendant for the easy manipulation of said manifold hub relative to the breast.
25. A medical device for introducing a fluid into a breast duct, said device comprising:
a catheter sized and configured to extend within a breast duct, said catheter having an internal lumen extending substantially parallel to a longitudinal axis of said catheter;
a manifold hub connected to and in fluid communication with said catheter, said manifold hub including at least four ports in fluid communication within an interior of said manifold hub, at least two of said at least four ports being in fluid communication with channels formed within said manifold hub for receiving a fluid introduction line and a ductal fluid collection line, respectively, said manifold hub having a height extending parallel the longitudinal axis of said catheter and a length extending perpendicular to the longitudinal axis of said catheter, said length of said manifold hub being greater than said height of said manifold hub.
26. The medical device of claim 25 wherein said catheter extends from a first end of said manifold hub, and further comprising a sealing fitting positioned at a second end of said manifold hub opposite said catheter, said sealing fitting including an aperture that may be repeatedly opened and closed.
27. The medical device of claim 26 wherein said sealing fitting includes a Touhy-Borst fitting for sealing about a member extending through said manifold hub at said second end of said manifold hub.
28. The medical device of claim 27 wherein said Touhy-Borst fitting comprises a silicone plug comprising said aperture and a threaded cap such that when said cap is turned in a first direction, the silicone plug is altered and a size of said opening within said silicone plug is reduced, thereby forming a seal about said member extending through said manifold hub.
29. The medical device of claim 25 further comprising an anchoring member secured to manifold hub for securing the device to the body of a patient, said anchoring member having a lower surface carrying a biocompatible adhesive for contacting the body of the patient.
30. The medical device of claim 25 further comprising a source of negative pressure in communication with said manifold hub for directing a ductal fluid sample from within said manifold hub to a ductal fluid collection receptacle.
31. The medical device of claim 30 wherein said source of negative pressure comprises a powered vacuum source in fluid communication with said manifold hub.
32. The medical device of claim 30 wherein said source of negative pressure comprises a mechanically controlled negative pressure source in fluid communication with said manifold hub.
33. The medical device of claim 25 further comprising a fluid container for holding a fluid being delivered to the breast duct, a fluid infusion member for delivering fluid from said fluid container to said manifold hub, a ductal fluid collection receptacle and a ductal fluid collection member extending between said manifold hub and said collection receptacle for delivering ductal fluid samples from said manifold hub to said collection receptacle.
34. The medical device of claim 33 wherein said fluid container includes a fluid bag for housing a biocompatible fluid, said fluid bag being positionable vertically above said manifold hub for delivering the biocompatible fluid to said manifold hub.
35. The medical device of claim 33 wherein said fluid infusion member includes a syringe.
36. The medical device of claim 33 wherein said ductal fluid collection receptacle includes a syringe.
37. The medical device of claim 33 wherein said ductal fluid collection receptacle includes a fluid collection bag for being vertically spaced below said manifold hub to receive a ductal fluid sample from within said manifold hub.
38. The medical device of claim 33 wherein said fluid infusion member and/or said ductal fluid collection member includes a one-way check valve.
39. The medical device of claim 25 wherein said catheter includes a microcatheter having a lubricious coating that allows said catheter to be easily introduced into the breast duct openings.
40. The medical device of claim 39 wherein said lubricious coating may include a lubricant, a cleaning agent, anesthetic and/or a dilating agent.
41. The medical device of claim 39 wherein a proximal end of said microcatheter includes an atraumatic tip.
42. The medical device of claim 25 further comprising an adjustable spacer for positioning said manifold hub a distance above the surface of a nipple.
43. The medical device of claim 42 wherein said spacer comprises at least two telescoping members extending between the manifold hub and a portion of the catheter.
44. The medical device of claim 42 wherein said spacer includes a member that is moveable relative to the manifold hub such that a portion of the manifold hub is received within said moveable member.
45. A ductal access device for aspirating fluid from a breast duct, said device comprising:
a manifold hub for receiving a fluid to be introduced into a breast duct;
a catheter extending from said manifold hub, said catheter being sized for positioning within a breast duct and including a lumen for introducing and receiving fluid within the breast duct, said lumen being in fluid communication with said manifold hub and sized to receive a ductal fluid sample from within the breast duct; and
a source of negative pressure in fluid communication with said manifold hub such that ductal fluid samples within the manifold hub are drawn to said source of negative pressure for being received within a collection device,
wherein said catheter includes a longitudinal axis and said manifold hub includes a height that extends substantially parallel to said longitudinal axis of said catheter and a length that extends substantially perpendicular to said longitudinal axis of said catheter, wherein said length of said manifold hub is greater than the height of said manifold hub.
46. The ductal access device of claim 45 wherein said manifold hub comprises at least four ports in fluid communication with an interior of said manifold hub, and wherein two of said ports being in fluid communication with a pair of channels forming a portion of said manifold hub.
47. The ductal access device of claim 45 wherein said catheter extends from a first end of said manifold hub, and further comprising a Touhy-Borst fitting positioned at a second end of said manifold hub opposite said catheter.
48. The ductal access device of claim 45 further comprising an anchoring member including a lower surface carrying a biocompatible adhesive for securing the device to the body of a patient.
49. The ductal access device of claim 45 wherein said source of negative pressure comprises a powered vacuum source in fluid communication with said manifold hub.
50. The ductal access device of claim 45 wherein said source of negative pressure comprises a mechanically controlled negative pressure source in fluid communication with said manifold hub.
51. The ductal access device of claim 45 further comprising a fluid container for holding a fluid being delivered to the breast duct, a fluid infusion member for delivering fluid from said fluid container to said manifold hub and a ductal fluid collection member extending between said manifold hub and said collection device for delivering ductal fluid samples from said manifold hub to said collection device.
52. The ductal access device of claim 51 wherein said fluid container includes a fluid bag for housing a biocompatible fluid, said fluid bag being positionable vertically above said manifold hub for delivering the biocompatible fluid to said manifold hub.
53. The ductal access device of claim 51 wherein said ductal fluid collection device includes a fluid collection bag for being vertically spaced below said manifold hub to receive a ductal fluid sample from within said manifold hub.
54. The ductal access device of claim 45 wherein said catheter includes a microcatheter having a lubricious coating that allows said catheter to be easily introduced into the breast duct openings.
55. The ductal access device of claim 54 wherein said lubricious coating may include a lubricant, a cleaning agent, anesthetic and/or a dilating agent.
56. The ductal access device of claim 45 further comprising an adjustable spacer for positioning said manifold hub a distance above the surface of a nipple.
57. The ductal access device of claim 56 wherein said spacer comprises at least two telescoping members extending between the manifold hub and a portion of the catheter.
58. The ductal access device of claim 56 wherein said spacer includes a member that is moveable relative to the manifold hub such that a portion of the manifold hub is received within said moveable member.