Surgery – Truss – Perineal
Patent
1986-06-24
1988-05-24
Rosenbaum, C. Fred
Surgery
Truss
Perineal
128 92YQ, 128 92Z, 128 92ZK, 128 92YP, A61B 1760
Patent
active
047459131
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
The present invention has for its object to provide an apparatus for the stabilization of bone fractures.
It is known at this time that the problem of stabilization with mechanical means of bone fractures, as a substitute for the more cumbersome, obsolete and non functional plaster casting, has been tackled by various surgical teams in the principal countries of the world.
At the end of 1942 Otto Stader in the United States (U.S. Pat. No. 2,393,831) proposed to fix the fracture of long bones by means of transosseous nails which however had a considerable weight and a lack of utility in use, in that they did not permit to reduce the fracture in separate frontal and sagittal planes to put in correct alignment the two damaged bones to be joined together. This brought about the necessity for surgical operations dangerous for the patient and with long use of radiological apparatus for the verification of the two osseous stumps.
In 1945 Roger Anderson in the United States (U.S. Pat. No. 2,477,562) proposed an operating table in association with a device having pins going through for the reduction of the fracture, which however constrained the patient to a long period of immobility, with all the undesirable resulting consequences.
In 1976 a group of researchers of the French Institute ISERM & CERCA (FR-A No. 2,338,692) proposed an apparatus provided with movable clamps along two parallel guides and with jaws with a spring held by friction. However, the apparatus was cumbersome and complex, requiring complex investigations and manipulations to reduce the fracture contemporaneously in the two vertical and horizontal planes.
In 1978 the american Richard Frederick Kronner (FR-A No. 2,439,002) proposed an apparatus to reduce and immobilise the fracture which however was very heavy, of great encumbrance and difficulty to set up.
In 1979 a group of Czechoslovakian researchers (CH-A No. 738,390) proposed a device to reduce the fracture provided with elements slidable on parallel guides. The locking clamps are very simple and do not permit variations in inclination and length, as a result of which there is little possibility of reducing the fracture.
In 1981 Rudolf Kleining (DE-A No. 3,118,397) proposed an over-simplified device in which there was complete lack of a pivot for external adjustment, as a result of which it was impossible to reduce a fracture after having placed the apparatus in operation. Because of this, it could only be used for fractures already reduced, which did not require interventions in the apparatus after it was inserted.
Also in 1981 Juan Lazo Zbikowski (FR-A No. 2,517,535) proposed a device with screws which were absorbable and aligned, held by clamps of considerable weight and encumbrance, which did not have a very great stability of retention at a distance, and did not permit to reduce the fracture at the same time in two planes, with great harm for the patient and operators exposed for much time to radiological emissions for verifying the alignment of the skeletal stumps.
In 1981 the present applicants Castaman and Borghettini (IT-A No. 85609/81) proposed a device for the stabilization of the fracture of long bones which offers an easy possibility of reduction in various planes, an optimum mechanical stability, a wide versatility resulting at the same time in a low weight and low encumbrance, with notable advantages for the patient and for the surgeon.
The present application describes a device which is improved with respect to the previous invention, both with respect to the manner of fixing the bone-traversing pins to the structure of the carrier bar, and with respect the component parts of the bar itself, in such a manner as to increase the stability of the apparatus during use and the possibility of adjustment of the parts of the same during the operation of applying it to the limb of the patient.
One of the inconveniences which occur in practice resides in the difficulty of guaranteeing a secure position at the time of positioning of the various metal pins, which may be threa
REFERENCES:
patent: 1789060 (1931-01-01), Weisenbach
patent: 2435850 (1948-02-01), Siebrandt
patent: 2439995 (1948-04-01), Thrailkill
patent: 4261350 (1981-04-01), Branemark et al.
patent: 4393868 (1983-07-01), Teague
Borghettino Lino
Castaman Enrico
Reilly Colleen
Rosenbaum C. Fred
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