Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
2000-02-17
2001-01-09
Philogene, Pedro (Department: 3732)
Surgery
Instruments
Orthopedic instrumentation
C606S054000, C606S057000, C606S058000
Reexamination Certificate
active
06171307
ABSTRACT:
FIELD OF THE INVENTION
The field of invention relates to a bone setting apparatus and method for the external unilateral fracture fixation, compression or enlargement of human osseous tissue.
BACKGROUND OF THE INVENTION
Bone fractures have been traditionally treated by immobilization with a cast. Treatment has evolved and now the use of surgical procedures using intramedullary pins, plates, and screws have become common. These procedures require major surgery and immobilization. Any major surgery involves risks or infections and/or many other complications. Also the required post operatory treatment causes pain and discomfort to the patient.
The use of external fixators reemerged in the early sixties. Several types of mechanisms and procedures appeared in use with several important deficiencies in current technology:
the required use of templates
not cost effective
cumbersome to install
uncomfortable to the patient
not very versatile
current external fixators share one or more of the above characteristics.
SUMMARY OF THE INVENTION
The invention is based upon the use of an external rod, brace, or other stabilizing means to position and move bone pins which pass through the flesh into the bone during the healing process. Basically the apparatus and procedure are for the external unilateral fracture fixation, compression or enlargement of osseous tissue comprising: a) a metal or equivalent material slotted forked stick to hold and position threaded trans-osseous pins in its length; b) multiple fastening slidable screws with bolts to attach the threaded trans-osseous pins to the slotted forked stick; c) a solid slidable cube to hold and position the slotted forked stick; d) a supporting axial bar, and e) an axial movable bar with securing means.
The method begins with the insertion of trans-osseous pins in the osseous tissue. These pins are then positioned and fixed according to the state of the osseous tissue. The pins are held by clamping forks that are inserted in cubes that slide and are positioned along an axial bar. The pins are held by the clamping forks in accordance with the position in which they were inserted into the osseous tissue. The cubes are fixed along the axial bar make the clamping forks and the pins attached to them, immobilize, distract or compress the osseous tissue.
The primary object of the invention is to provide a fast and effective immobilization of bone fractures or enlargement of osseous tissue.
Another object of the invention is to provide a non opened reduction of bone fractures.
Another object of the invention is to provide a versatile treatment for diverse fractures.
A further object of the invention is to provide an external fixation of fractures without the use or need of templates.
Yet another object of the invention is to provide a cost effective alternative for bone fracture treatment.
Still yet another object of the invention is to provide a minimal surgery in case of extension or enlargement of osseous tissue when bone shortening or loss has occurred. Another object of the invention is to provide a method for minimal disturbance of the hematoma formed at the fracture site and soft tissue disturbances which will eventually produce osseous calluses.
Another object of the invention is to provide a method to minimize fracture infections and other complications of mal-alignment of the fracture.
Another object of the invention is to fix the trans-osseous pins no matter the direction or inclination in which they are placed.
A further object of the invention is to provide a patient friendly device for fracture treatment.
Yet another object of the invention is to provide a lightweight device for fracture treatment or enlargement of osseous tissue.
Still yet another object of the invention is to provide a device that allows movement of adjacent articulations in bone fracture treatment or enlargement of osseous tissue.
REFERENCES:
patent: 2250417 (1941-07-01), Ettinger
patent: 2371519 (1945-03-01), Haynes
patent: 5601551 (1997-02-01), Taylor et al.
patent: 5662648 (1997-09-01), Faccioli et al.
patent: 5769851 (1998-06-01), Veith
Dominik Jack E.
Philogene Pedro
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