Device, system and method for determining the position of an incision block

• US 6,551,325 B2
• Filed: 05/17/2001
• Issued: 04/22/2003
• Est. Priority Date: 09/26/2000
• Status: Expired due to Term

• Current Assignee: Brainlab AG
• Original Assignee: Brainlab AG
• Inventors: Neubauer, Timo, Immerz, Martin
• Primary Examiner(s): Philogene, Pedro
• Application Number:
  US09/860,026
• Publication Number:
  US 20020068942A1
• Time in Patent Office: 705 Days
• Field of Search: 600/86, 600/87, 600/98, 600/97, 600/96, 600/90, 600/88, 600/426, 744/900.7, 744/900.3, 248/124.1, 623/16.11
• US Class Current: 606/88
• CPC Class Codes: A61B 17/154 for preparing bone for knee prosthesis
• CPC Class Codes: A61B 17/155 Cutting femur
• CPC Class Codes: A61B 17/157 Cutting tibia
• CPC Class Codes: A61B 17/1764 for the knee
• CPC Class Codes: A61B 17/92 Impactors or extractors, e.g. for removing intramedullary devices insertion or extraction of artificial joints A61F2/4603
• CPC Class Codes: A61B 2090/3945 Active visible markers, e.g. light emitting diodes
• CPC Class Codes: A61B 2090/397 electromagnetic other than visible, e.g. microwave
• CPC Class Codes: A61B 2090/3983 Reference marker arrangements for use with image guided surgery
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

The invention relates to a device (20, 30) for determining the position of an incision block (1, 10) comprising: a positioning element (21, 31) with at least one reference point (22a, 22b, 22c; 33a, 33b, 33c), whose spatial position can be detected; and a position determining element (24a, 24b; 34) which is firmly connected to the positioning element (21, 31), as well as to a method for determining the position of an incision block, wherein: the location of a positioning element (41) on a body structure, in particular on a bone, is detected; the location of a positioning element (21, 31) for positioning a position determining element (24a, 24b; 34) is detected; and the relative location of an incision block (1, 10) to the body structure is determined from the location of the positioning element (41) and the location of the positioning element (21, 31).

Claims

1. A device for determining the position of an incision block, comprising:

a positioning element, with at least one reference point, whose spatial position can be detected; and

a position determining element, which is firmly connected to said positioning element;

wherein said position determining element is a hole template for preparing and/or creating a connecting structure; and

said hole template comprises at least two holes.

2. A system for positioning an incision block, comprising:

a device for determining the position of an incision block, including;

a positioning element, with at least one reference point, whose spatial position can be detected; and

a position determining element, which is firmly connected to said positioning element; and

an incision block and/or a position determining element, said position determining element being a hole template for preparing and/or creating a connecting structure.

3. The system as set forth in claim 2, comprising a device for attaching a positioning element to a bone in a stable manner.

4. A positioning device for positioning an incision block comprising:

a positioning element having at least one detectable reference element that can be detected by a navigation device; and

a position determining element connected to the positioning element, the position determining element being configured to interact with the incision block such that movement of the incision block with reference to the positioning determining element is restricted along at least one axis.

5. The positioning device of claim 4, wherein the at least one detectable reference elements is selected from the group consisting of active elements and passive elements.

6. The positioning device of claim 4, wherein the positioning element comprises a reference star having at least three detectable reference elements.

7. The positioning device of claim 4, wherein the position determining element is rotatable with respect to the positioning element.

8. The positioning device of claim 4, wherein the position determining element comprises at least one plate configured for insertion into a guide slit of the incision block.

9. The positioning device of claim 4, wherein the plate resides in a plane fixed in relation to the positioning element, and the plate can be rotated and/or shifted within said plane.

10. The positioning device of claim 4, wherein the position determining element comprises at least two plates differing in at least one of thickness and diameter.

11. A system for positioning incisions made to a bone, comprising an incision block;

and the positioning device of claim 4.

12. A method for positioning an incision block comprising the steps of:

causing the positioning device of claim 4 to interact with the incision block; and

positioning the incision block by detecting the location of the at least one detectable reference element of the positioning device.

13. The method of claim 12, wherein the positioning device interacts with the incision block such that movement of the incision block with reference to the positioning device is restricted to a plane perpendicular to said axis.

14. The method of claim 12, further comprising the step of securing the incision block to a bone.

15. A positioning device for positioning a connecting element into a bone comprising:

a positioning element having at least one detectable reference element that can be detected by a navigation device; and

a template connected to the positioning element for use in placing at least one connecting element into a bone, the template including at least one of a guide hole and guide slot.

16. The positioning device of claim 15, wherein the template includes spikes for holding the template in position relative to the bone.