1. A screw (11), comprising a shaft (12); a thread (13) arranged at least in some areas over a circumference of the shaft (12) and defining a helix (14), and elongate cutting bodies (26; 36; 46; 56; 66) made of a material having a hardness greater than the hardness of the thread (13), the thread (13) having a plurality of recesses (20, 21) for receiving the elongate cutting bodies (26; 36; 46; 56; 66) and oriented along the helix (14), and the elongate cutting bodies (26; 36; 46; 56; 66) being inclined along a longitudinal extent thereof relative to respective tangents of the helix (14) so that longitudinal axes (27; 37; 47; 57; 67) of the elongate cutting bodies (26; 36; 46; 56; 66) form with the respective tangents of the helix (14) an angle (A; B; C; D) different from O\xb0.
2. A screw according to claim 1, wherein the cutting bodies (56, 66) are arranged next to one another along the thread (13) are inclined relative to the respective tangents of the helix (14) at different degrees so that the respective longitudinal axes (57, 67) enclosed with the respective tangents different angles (D, E).
3. A screw according to claim 1, wherein the angle between a respective longitudinal axis of a cutting body and a respective tangent of the helix varies in a range from \u221235\xb0 to +35\xb0, excluding 0\xb0.
4. A screw according to claim 1, wherein the elongate cutting bodies are formed as cylindrical cutting bodies.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A surgical guide system, comprising:
a sleeve having an inner lumen extending therethrough;
a guide that is removably insertable into the inner lumen of the sleeve, the guide having a distal tip that is laterally offset from a central longitudinal axis of the inner lumen by a predetermined distance; and
a locking mechanism configured to maintain a location of the guide with respect to the sleeve in a fixed position in which a portion of the guide extends through the inner lumen and the distal tip extends distally beyond a distal-most end of the sleeve.
2. The surgical system of claim 1, wherein the locking mechanism further comprises a trocar that is removably insertable into the inner lumen of the sleeve to engage the guide and maintain the guide in the fixed position.
3. The surgical system of claim 2, wherein the trocar includes at least one guide passageway configured to receive the guide therein, the at least one guide passageway having one or more walls configured to engage the guide to maintain the guide in the fixed position.
4. The surgical system of claim 3, wherein the trocar includes a K-wire passageway configured to slidably receive a K-wire that is configured to be inserted into bone.
5. The surgical system of claim 4, wherein the K-wire passageway extends through a cross-sectional center of the trocar and the at least one guide passageway is disposed radially outward from a diameter of the K-wire passageway.
6. The surgical system of claim 1, wherein a proximal portion of the guide comprises a stopper that extends proximally beyond a proximal-most end of the sleeve when the guide is in the fixed position.
7. The surgical system of claim 1, wherein at least the distal tip of the guide is made from a shape-memory material.
8. The surgical system of claim 1, wherein the predetermined distance is in the range of about 3 millimeters to about 12 millimeters.
9. The surgical system of claim 1, wherein the locking mechanism further comprises a slot formed in the guide and configured to engage the guide to maintain it in the fixed position.
10. The surgical system of claim 1, wherein the sleeve has at least one slot extending through a sidewall thereof, the at least one slot being configured to allow the guide to pass therethrough.
11. A wire guide for creating a stabilizing offset for drilling a hole in a bone, comprising:
a wire having a distal portion, an intermediate portion, and a proximal portion, the distal portion being laterally offset from the intermediate portion by a predetermined distance, the distal portion having a shape that corresponds to a shape of an edge of a bone with which the guide is configured to be used to create a stabilizing offset such that when the distal portion engages the bone, the wire guide establishes an offset position at which a hole is to be drilled in the bone engaged by the distal portion, and the proximal portion having a loop formed therein.
12. The wire guide of claim 10, wherein the distal portion is formed from a shape memory material.
13. The wire guide of claim 10, wherein the distal portion has an S-shape.
14. The wire guide of claim 10, wherein the wire is configured to be integrally formed with a sleeve having an inner lumen extending therethrough such that the distal portion of the wire extends distally beyond a distal-most end of the sleeve.
15. A surgical method, comprising:
inserting a sleeve through an opening in a patient’s body and adjacent to a bone;
inserting a guide through the opening in the patient’s body;
placing the guide in an inner lumen of the sleeve such that a distal tip of the guide extends distally beyond a distal-most end of the sleeve, the distal tip having a guide placement surface;
rotating the guide such that its distal tip is disposed outside of a diameter of the sleeve;
placing the guide placement surface against an edge of the bone such that the inner lumen of the sleeve is proximate to a bore formation location on the bone that is offset from the edge of the bone; and
forming a bore in the bone at the bore formation location.
16. The surgical method of claim 15, further comprising securing a fixed location of the guide with respect to the sleeve after the distal tip of the guide extends distally beyond the distal-most end of the sleeve.
17. The surgical method of claim 16, wherein securing a fixed location of the guide with respect to the sleeve includes inserting a trocar distally through the inner lumen.
18. The surgical method of claim 17, further comprising inserting a K-wire distally through the trocar and into the bone.
19. The surgical method of claim 15, further comprising adjusting a location of the distal tip with respect to a main body of the guide after the guide has been passed distally through the sleeve.
20. The surgical method of claim 15, wherein the bone is a scapula and the edge of the bone is the glenoid rim.