Surgical device for proper orientation during osteotomy
A surgical device for osteotomy allows for accurate determination of the angle at which a bone in the human or animal body should be corrected, and for precisely maintaining the angle constant during the entire surgical procedure. The surgical device having on its distal end a circular segment fixed to a distal end of a first blade and further moveably connected to a distal end of a second blade. The distal end of the second blade is allowed to move along the circular segment, wherein the proximal ends of the first and second blade converge at an angle. At least a pair of pin guide openings are provided in parallel for inserting and positioning at least two parallel pins or drill bits. The surgical device provides unique fixed reference means allowing to perform a precise surgery according to predetermined parameters and angles even at the final stages of the operation.
1. A surgical device for osteotomy comprising;
on its distal end a circular segment fixed to a distal end of a first blade and further moveably connected to a distal end of a second blade, allowing to move said distal end of the second blade along the circular segment, wherein the proximal ends of the first and second blade converge at an angle,
said device further comprising at least a pair of pin guide openings wherein the pin guide openings are provided in parallel for inserting and positioning at least two parallel pins or drill bits, and
an at least one pin guide opening in said at least one pair passes through said circular segment, while the remaining pin guide opening from said pair is fixed in either the circular segment or in the first blade.
2. The surgical device according to claim 1 , wherein said circular segment comprises a protractor for reading the angle between the two blades.
3. The surgical device according to claim 1 , wherein at least one of or both of the blades comprise chisel-shaped edge.
4. The surgical device according to claim 3 , wherein the proximal ends of both chisel-shaped blades converge forming a double-bladed chisel.
5. The surgical device according to claim 1 , whereby at least one of or both of the blades comprise reference markings, such as incisions or calibrated ruler lines, for determining the depth of the cut into the bone.
6. The surgical device according to claim 1 further comprising means for moving the distal end of the second blade along the circular segment, thereby allowing to adjust the angle formed between the converged proximal ends of the two blades.
7. The surgical device according to claim 6 , wherein said means is provided as a serrated bolt comprised between the two blades.
8. The surgical device according to claim 7 , wherein said bolt screws directly into at least one blade, while rotating freely within a groove provided in the surface of the remaining blade.
9. The surgical device according to claim 7 , wherein said bolt screws into a threaded rotatable cylinder positioned in an opening made in at least one lateral side of at least one blade, which allows adjusting the angle of the bolt with respect to said blade while anchored within the second blade either in a fixed point, such as groove, or in a second threaded rotatable cylinder positioned in an opening made in at least one lateral side of the remaining blade.
10. The surgical device according to claim 6 , wherein said means is provided as a worm-shaped screw system with serration on the circular segment, either along its convex or concave side.
11. The surgical device according to claim 1 further comprising a separate fixable and detachable distractor device, either adjustable or comprising at least two open holes at a distance from each other corresponding to the distance between two parallel pins or drill bits positioned in said at least one pair of the parallel pin guide openings in said surgical device.
12. A kit-of-parts comprising the surgical device according to claim 1 further comprising any one of or any combination of the following:
any number of pins compatible with the parallel pin guide openings of said surgical device;
any number of drill bits compatible with the parallel pin guide openings of said surgical device;
at least one distractor device either adjustable or comprising at least two open holes at a distance from each other corresponding to the distance between two parallel pins or drill bits positioned in said at least one pair of the parallel pin guide openings in said surgical device;
any number of support plates comprising a plurality of openings comprising at least two openings at a distance from each other corresponding to the distance between two parallel pins or drill bits positioned in said at least one pair of the parallel pin guide openings of the surgical device, said support plate further comprising a plurality of additional openings for accommodating screws that fix the support plate to the bone and comprising a plurality of said screws pre-positioned in said additional openings;
any number screws for fixing the support plate onto the bone.