Organ access device and method

• US 20040122446A1
• Filed: 12/20/2002
• Published: 06/24/2004
• Est. Priority Date: 12/20/2002
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Solar, Matthew S.
• Granted Patent: US 7,636,596 B2
• Time in Patent Office: Days
• US Class Current: 606/129
• CPC Class Codes: A61B 2017/3405 using mechanical guide means
• CPC Class Codes: A61B 2090/363 Use of fiducial points
• CPC Class Codes: A61B 2090/3916 Bone tissue
• CPC Class Codes: A61B 90/11 with guides for needles or instruments, e.g. arcuate slides or ball joints
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing

Abstract

An insertion guide is shown that includes at least one insertion point adjustment device. A user such as a surgeon is able to adjust a lateral position of an insertion point to more precisely center the insertion point within an opening in a subject, such as a burr hole. Selected insertion guide devices further include a centering guide that easily indicates to a user when the insertion point is substantially centered within the opening in the subject. Selected insertion guide devices include adjustability of multiple degrees of rotational freedom of an insertion axis. Selected insertion guide devices further permit a user to fix multiple degrees of rotational freedom of an insertion axis using a single locking device. Tissue damage due to an attachment procedure of an insertion guide device is reduced using selected configurations described herein.

Claims

1. An insertion guide device, comprising:

a base unit;

an insertion guide portion coupled to the base unit, the insertion guide portion having a guide axis that intersects a subject surface at an insertion point;

at least one attachment device coupled to the base unit, the attachment device adapted for attachment to a subject; and

an insertion point adjustment device coupled between the base unit and the subject, wherein a location of the insertion point is adjustable within the subject surface.

2. The insertion guide device of claim 1, wherein a first angle of the guide axis is adjustable about a first axis that passes through the insertion point.

3. The insertion guide device of claim 2, wherein a second angle of the guide axis is adjustable about a second axis that passes through the insertion point.

4. The insertion guide device of claim 3, wherein the first axis is substantially normal to the subject surface at the insertion point.

5. The insertion guide device of claim 4, wherein the second axis is substantially tangent to the first axis at the insertion point.

6. The insertion guide device of claim 5, further including a locking device that fixes an orientation of the guide axis about both the first axis and the second axis concurrently.

7. The insertion guide device of claim 3, wherein the first axis is substantially tangent to the subject surface at the insertion point.

8. The insertion guide device of claim 7, wherein the second axis is substantially normal to the first axis at the insertion point, and substantially tangent to the subject surface at the insertion point.

9. The insertion guide device of claim 8, wherein an orientation of the first axis and second axis is further adjustable about a third axis normal to the subject surface at the insertion point.

10. The insertion guide device of claim 1, wherein the at least one attachment device is adapted to attach to a fiducial marker support.

11. The insertion guide device of claim 1, wherein the at least one attachment device spaces a majority of the insertion guide device a distance above the subject surface.

12. The insertion guide device of claim 11, wherein the at least one attachment device contacts the subject along a line.

13. The insertion guide device of claim 11, wherein the at least one attachment device contacts the subject at a truncated cone portion.

14. The insertion guide device of claim 1, wherein at least a portion of the insertion guide device includes a substantially transparent material.

15. An insertion guide device, comprising:

a base unit;

an insertion guide portion coupled to the base unit, the insertion guide portion having a guide axis that intersects a subject surface at an insertion point;

at least one attachment device coupled to the base unit, the attachment device adapted for attachment to a subject; and

an insertion point adjustment device coupled between the base unit and the subject, wherein a location of the insertion point is adjustable within the subject surface; and

a centering guide that indicates when the insertion point is substantially centered within an opening in a subject.

16. The insertion guide device of claim 15, wherein the centering guide includes:

a first diameter portion having a close tolerance fit with the insertion guide portion; and

a second diameter portion having a close tolerance fit with a dimension of the opening in the subject.

17. The insertion guide device of claim 15, further including:

a first adjustment device wherein a first angle of the guide axis is adjustable about a first axis that passes through the insertion point; and

a second adjustment device wherein a second angle of the guide axis is adjustable about a second axis that passes through the insertion point.

18. The insertion guide device of claim 15, wherein the at least one attachment device spaces a majority of the insertion guide device a distance above the subject surface.

19. The insertion guide device of claim 18, wherein the at least one attachment device contacts the subject along a line.

20. The insertion guide device of claim 18, wherein the at least one attachment device contacts the subject at a truncated cone portion.

21. An insertion guide device, comprising:

a base unit;

an insertion guide portion coupled to the base unit, the insertion guide portion having a guide axis that intersects a subject surface at an insertion point;

at least one attachment device coupled to the base unit, the attachment device adapted for attachment to a subject; and

a centering guide that indicates when the insertion point is substantially centered within an opening in a subject.

22. The insertion guide device of claim 21, wherein the centering guide includes:

a first diameter portion having a close tolerance fit with the insertion guide portion; and

a second diameter portion having a close tolerance fit with a dimension of the opening in the subject.

23. A method of aligning an insertion guide device, comprising:

providing a base unit;

coupling an insertion guide portion to the base unit, the insertion guide portion having a guide axis that intersects a subject surface at an insertion point;

coupling at least one attachment device to the base unit, the attachment device adapted for attachment to a subject; and

adjusting an insertion point adjustment device coupled between the base unit and the subject, to select a location of the insertion point within the subject surface.

24. The method of claim 23, further including:

adjusting a first angle of the guide axis about a first axis that passes through the insertion point; and

adjusting a second angle of the guide axis about a second axis that passes through the insertion point.

25. The method of claim 24, further including fixing the first angle of the guide axis and the second angle of the guide axis concurrently.

26. The method of claim 23, further including centering the insertion guide portion using a centering guide wherein the centering guide indicates when the insertion point is substantially centered within an opening in a subject.

27. The method of claim 26, wherein centering the insertion guide portion includes:

coupling a first diameter portion of the centering guide to the insertion guide, the first diameter portion having a close tolerance fit with the insertion guide portion;

adjusting the insertion point adjustment device to an orientation where a first diameter portion of the centering guide fits at least partially within the opening in the subject, the first diameter portion having a close tolerance fit with a dimension of the opening in the subject.

28. A method of manufacturing an insertion guide device, comprising:

forming a base unit;

coupling an insertion guide portion to the base unit, the insertion guide portion having a guide axis that intersects a subject surface at an insertion point;

coupling at least one attachment device to the base unit, the attachment device adapted for attachment to a subject; and

coupling an insertion point adjustment device between the base unit and the subject, wherein a location of the insertion point is adjustable within the subject surface.

29. The method of claim 28, further including:

forming a first angle adjustment device, wherein a first angle of the guide axis is adjustable about a first axis that passes through the insertion point; and

forming a second angle adjustment device, wherein a second angle of the guide axis is adjustable about a second axis that passes through the insertion point.

30. The method of claim 29, further including coupling a locking device to the first angle adjustment device and to the second angle adjustment device, wherein the locking device fixes the first angle of the guide axis and the second angle of the guide axis concurrently.

31. The method of claim 28, further including coupling a centering guide to insertion guide device wherein the centering guide indicates when the insertion point is substantially centered within an opening in a subject.

32. The method of claim 28, wherein coupling at least one attachment device to the base unit includes coupling at least one attachment device to the base unit that spaces a majority of the insertion guide device a distance above the subject surface.

33. The method of claim 32, wherein coupling at least one attachment device to the base unit includes coupling at least one attachment device to the base unit that contacts the subject along a line.

34. The method of claim 32, wherein coupling at least one attachment device to the base unit includes coupling at least one attachment device to the base unit that contacts the subject at a truncated cone portion.

35. A method of aligning an insertion guide device, comprising:

providing a base unit;

coupling an insertion guide portion to the base unit, the insertion guide portion having a guide axis that intersects a subject surface at an insertion point;

coupling at least one attachment device to the base unit, the attachment device adapted for attachment to a subject;

adjusting the guide axis with respect to the base unit prior to attaching the insertion guide device to the subject; and

adjusting an insertion point adjustment device coupled between the base unit and the subject, to select a location of the insertion point within the subject surface.