ANATOMIC NEEDLE SYSTEM

• US 20110202123A1
• Filed: 02/18/2010
• Published: 08/18/2011
• Est. Priority Date: 02/18/2010
• Status: Active Grant

• Current Assignee: P TECH, LLC
• Original Assignee: P TECH, LLC
• Inventors: Bonutti, Peter M.
• Granted Patent: US 9,168,163 B2
• Time in Patent Office: Days
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2230/0041 J-shaped
• CPC Class Codes: A61F 2250/0018 differing in elasticity, stiffness or compressibility
• CPC Class Codes: A61M 2025/0253 where the catheter is attached by straps, bands or the like secured by adhesives
• CPC Class Codes: A61M 2025/028 having a mainly rigid support structure
• CPC Class Codes: A61M 25/02 Holding devices, e.g. on the body
• CPC Class Codes: A61M 25/065 Guide needles

Abstract

A needle system for providing fluidic and/or instrument access to an internal body structure. Exemplary embodiments may include non-linear needles having anatomically appropriate lengths and curvatures. Some exemplary embodiments may include a pivotable base, which may assist in stabilizing the needle system with respect to a body structure and/or may be reconfigurable into a safety guard position. Exemplary needle systems may include expandable conduits providing fluidic and/or instrument pathways into internal body structures.

Claims

1. A needle system comprising:

a tubular needle extending including a straight section and a bent section, the bent section extending distally and non-linearly from the straight section;

wherein a length of the bent section is associated with a depth of a biological structure beneath a tissue surface.

2. The needle system of claim 1, further comprising a housing;

wherein the straight section extends distally from the housing

3. The needle system of claim 2, further comprising a base coupled to the housing;

wherein the base includes a base surface shaped to engage the tissue surface.

4. The needle system of claim 3, wherein the base surface includes at least one of a substantially concave portion and a groove running along a length of the base surface and adapted to seat upon at least one of a convex feature and a protruding feature on the skin.

5. The needle system of claim 3, wherein the base is pivotably coupled to the housing such that the base is pivotable between a first, tissue engaging position, in which the base surface faces generally away from the housing, and a second safety position in which the base surface faces the needle.

6. The needle system of claim 5, wherein, in the second position, the base at least partially covers the needle.

7. The needle system of claim 2, wherein at least a portion of the tubular needle is radially expandable from a first diameter to a second diameter, wherein the second diameter is greater than the first diameter.

8. The needle system of claim 2, wherein the needle is adapted to receive an endovascular surgical device therethrough.

9. The needle system of claim 2, wherein the bent section is angled with respect to the straight section at about 5-45 degrees.

10. The needle system of claim 9, wherein the bent section is angled with respect to the straight section at about 35-45 degrees.

11. The needle system of claim 9, wherein the bent section is angled with respect to the straight section at about 15-30 degrees.

12. The needle system of claim 9, wherein the bent section is angled with respect to the straight section at about 5-15 degrees.

13. The needle system of claim 2, wherein the length of the bent section is about 1-8 mm.

14. The needle system of claim 13, wherein the length of the bent section is about 1-3 mm.

15. The needle system of claim 13, wherein the length of the bent section is about 5-8 mm.

16. A method of accessing a body structure, the method comprising:

selecting a needle system from among a plurality of needle systems based at least in part upon at least one of a type of a body structure to be accessed, a size of the body structure to be accessed, and a depth of the body structure to be accessed, the needle system including a base and a tubular needle, the tubular needle including a straight section extending distally from a housing pivotably mounted to the base and a bent section extending from the straight section;

urging the needle into tissue adjacent the body structure to engage tissue adjacent the body structure with the base; and

advancing at least a portion of the needle substantially parallel to the body structure and at least partially into the body structure.

17. The method of claim 16, wherein urging the needle into the tissue includes receiving a convex portion of the tissue against a concave guide portion of the base.

18. The method of claim 17, wherein the convex portion of the tissue includes tissue overlying a vein.

19. The method of claim 17, wherein advancing the needle substantially parallel to the body structure includes translating the base along the tissue while maintaining contact between the base and the tissue.

20. The method of claim 19, wherein translating the base along the tissue includes translating the base along tissue overlying a vein in a direction generally parallel with the vein.

21. The method of claim 17, wherein advancing the needle substantially parallel to the body structure includes advancing the concave guide portion of the base over the convex portion of the tissue.

22. The method of claim 16, wherein advancing at least the portion of the needle substantially parallel to the body structure includes advancing the bent section of the needle substantially parallel to the body structure and at least partially into the body structure.

23. The method of claim 16, wherein the needle includes a hollow passage extending therethrough for at least one of introducing fluids to and withdrawing fluids from the body structure.

24. The method of claim 16, wherein the needle is configured to guide a device thereon into the body structure.

25. The method of claim 16, further comprising

withdrawing the portion of the needle from the body structure and the tissue;

and

pivoting the base to lie against the needle.

26. The method of claim 16, further comprising, after advancing at least the portion of the needle into the body structure, radially expanding at least the portion of the needle from a first diameter to a second diameter, the second diameter being greater than the first diameter.

27. The method of claim 26, wherein expanding at least the portion of the needle includes supplying pressurized fluid to the needle;

and wherein the needle is constructed from an elastically expandable material.

28. The method of claim 16, further comprising instilling a fluid into the body structure via the needle.

29. The method of claim 28, wherein the body structure is a vein.

30. The method of claim 16, further comprising inserting an endovascular surgical device into the body structure via the needle.

31. A penetrating device system comprising:

a penetrating device including

a first section,

a second section,

a third section,

a first bend interposing the first section and the second section, and

a second bend interposing the second section and the third section.

32. The penetrating device system of claim 31, wherein the first section, the second section, and the third section are substantially coplanar.

33. The penetrating device system of claim 31, wherein at least one of the first section, the second section, and the third section is non-coplanar with the others of the first section, the second section, and the third section.

34. The penetrating device system of claim 31, wherein the penetrating device is substantially S-shaped.

35. The penetrating device system of claim 31, wherein at least one of the first section, the second section, and the third section includes an expandable conduit.

36. The penetrating device system of claim 35, wherein the expandable conduit is configured around at least a portion of the penetrating device.

37. The penetrating device system of claim 35, wherein the expandable conduit is configured in a side-by-side arrangement with respect to at least a portion of the penetrating device.

38. The penetrating device system of claim 31, wherein the penetrating device includes at least one of a guide wire, a substantially solid needle, and a substantially hollow needle.

39. A needle system comprising:

a housing; and

a tubular needle extending distally from the housing, the needle including a straight section extending from the housing and a bent section extending distally and non-linearly from the straight section;

wherein a length of the bent section is associated with a depth of a biological structure beneath a tissue surface.

40. An expandable placement device comprising:

a guide including

a distal section including a distal end, and

a proximal section,

wherein the distal section is angled with respect to the proximal section;

a conduit disposed around at least a portion of the distal section; and

an implant disposed around at least a portion of the conduit disposed around the distal section;

wherein expansion of the conduit is operative to deploy the implant.

41. The expandable placement device of claim 40, wherein the implant is disposed around the conduit in a collapsed configuration and wherein, when deployed, the implant is in an expanded configuration.

42. The expandable placement device of claim 40, wherein the conduit extends from the distal section to the proximal section.

43. The expandable placement device of claim 42, wherein the conduit is configured to couple to a supply arranged to provide at least one of air, water, sterile fluid, disinfectant, and a therapeutic substance.

44. The expandable placement device of claim 43, wherein the guide is substantially rigid.

45. The expandable placement device of claim 40, wherein the conduit is tightly configured around the guide.

46. The expandable placement device of claim 40, wherein the implant includes a stent.

47. The expandable placement device of claim 46, wherein the stent includes at least one of a coronary artery stent, a vascular stent, a peripheral vascular stent, a urinary tract stent, and a urethral stent.