DRILL ASSISTANCE KIT FOR IMPLANT HOLE IN A BONE STRUCTURE

• US 20110238071A1
• Filed: 03/14/2011
• Published: 09/29/2011
• Est. Priority Date: 03/24/2010
• Status: Abandoned Application

• Current Assignee: Positdental Co.
• Original Assignee: Positdental Co.
• Inventors: Fernandez-Scoma, Alain
• Application Number:
  US13/047,510
• Publication Number:
  US 20110238071A1
• Time in Patent Office: Days
• US Class Current: 606/80
• CPC Class Codes: A61C 1/084 of implanting tools

Abstract

The present invention provides a kit for bone surgery comprising a chirurgical drill and a base frame for positioning of said drill on an anatomical part of a patient. The base frame comprises at least one guiding tube with a cylindrical inner surface of predetermined diameter and also comprises a longitudinal cutout for direct view of the drilling site. The kit further comprises a burr-ring with a cylindrical outer surface of predetermined diameter arranged to be placed around the chirurgical drill. The diameter of the cylindrical outer surface of the burr-ring is slightly less than the diameter of the cylindrical inner surface of the guiding tube such that the burr-ring and the guiding tube are at most in a two-degree of freedom relationship along the longitudinal axis of the guiding tube when the burr-ring is engaged in the guiding tube. The invention also provides a bone surgery method using the kit.

Claims

1. Kit for bone surgery comprising a chirurgical drill and a base frame for positioning of said chirurgical drill on an anatomical part of a patient,

wherein said base frame comprises at least one guiding tube with a cylindrical inner surface having a predetermined diameter and a longitudinal cutout, the kit further comprising a burr-ring arranged to be placed around said chirurgical drill, said burr-ring comprising a cylindrical outer surface having a predetermined diameter,

wherein the diameter of said cylindrical outer surface of the burr-ring is slightly less than said diameter of said cylindrical inner surface of the guiding tube and such that the burr-ring and the guiding tube are at most in a two-degree of freedom relationship along the longitudinal axis of the guiding tube when the burr-ring is engaged in the guiding tube, while the longitudinal cutout provides for direct view of the drilling site.

2. Kit according to claim 1 wherein said burr-ring comprises a central longitudinal hole of predetermined diameter substantially complementary to an outer diameter of said chirurgical drill so that said burr-ring can be placed around said chirurgical drill.

3. Kit according to claim 2 wherein said burr-ring and said chirurgical drill are in a one-degree of freedom relationship when the burr-ring is placed around the chirurgical drill and wherein said one-degree of freedom relationship is a rotation around a common longitudinal axis.

4. Kit according to claim 2 wherein said burr-ring and said chirurgical drill are mounted fixedly together in a zero-degree of freedom relationship when the burr-ring is placed around the chirurgical drill.

5. Kit according to claim 1 wherein the burr-ring comprises clamping means comprising at least one rib arranged circumferentially of said central longitudinal hole adapted to engage in at least one slot arranged circumferentially on said chirurgical drill.

6. Kit according to claim 1 wherein said burr-ring comprises an at least partially circumferential shoulder on an upper side to form an abutment together with the upper side of said guiding tube when the burr-ring is introduced in the guiding tube.

7. Kit according to claim 1 wherein said two-degree of freedom relationship of said burr-ring and said guiding tube is set along a common longitudinal axis and consisting of a longitudinal translation and a rotation.

8. Kit according to claim 1 wherein the burr-ring comprises at least one circumferential longitudinal rib on its cylindrical outer surface and the guiding tube comprises at least one circumferential longitudinal slot on its cylindrical inner surface so that the burr-ring and the guiding tube are in a one-degree of freedom relationship consisting of a longitudinal translation when said burr-ring is engaged in said guiding tube.

9. Kit according to claim 1 wherein the burr-ring comprises at least one circumferential longitudinal slot on its cylindrical outer surface and the guiding tube comprises at least one circumferential longitudinal rib on its cylindrical inner surface so that the burr-ging and the guiding tube are in a one-degree of freedom relationship consisting of a longitudinal translation when said burr-ring is engaged in said guiding tube.

10. Kit according to claim 1 wherein the longitudinal cutout extends along the entire guiding tube.

11. Method for bone surgery comprising the steps of:

a. placing a base frame comprising at least one guiding tube with a cylindrical inner surface having a predetermined diameter and a longitudinal cutout on an anatomical part of a patient for providing positioning of a chirurgical drill on said anatomical part,

b. placing a burr-ring around said chirurgical drill wherein said burr-ring comprises a cylindrical outer surface having a predetermined diameter that is slightly less than said diameter of said cylindrical inner surface of said guiding tube,

c. drilling into said anatomical part of the patient wherein the chirurgical drill penetrates axially into the anatomical part along a common central longitudinal axis while said burr-ring engages into said guiding tube and wherein the burr-ring and the guiding tube are at most in a two-degree of freedom relationship and wherein said two-degree of freedom relationship is consisting of a rotation and a translation of the burr-ring along said common central longitudinal axis, and

d. controlling the drilling by providing direct view of the drilling site by said longitudinal cutout of the guiding tube.

12. Burr-ring comprising a body of generally cylindrical shape having a central longitudinal hole of predetermined diameter wherein said central longitudinal hole comprises at least one rib consisting of a circumferential diameter constriction of predetermined length.

13. Burr-ring according to claim 12 wherein said body has a cylindrical outer surface and comprises a shoulder that is at least partially arranged circumferential on said cylindrical outer surface.

14. Burr-ring according to claim 12 wherein said body comprises a terminal frustoconical part of a decreasing diameter and wherein said decreasing diameter decreases from substantially the diameter of said body to substantially the predetermined diameter of said hole.

18. Burr-ring according to claim 13 wherein said body comprises a terminal frustoconical part of a decreasing diameter and wherein said decreasing diameter decreases from substantially the diameter of said body to substantially the predetermined diameter of said hole.

15. Base frame comprising a foot structure homologous to an anatomical part of a patient and at least one guiding tube with a cylindrical inner surface of predetermined diameter, said guiding tube comprising a longitudinal cutout.

16. Base frame according to claim 15 wherein the longitudinal cutout extends along the entire guiding tube.

17. Base frame according to claim 15 wherein said foot structure is homologous to an anatomical part chosen in the group consisting of an upper jaw bone structure, a lower jaw bone structure or at least a part of a dentition.