Vertebral compression clamp for surgical repair to damage to the spine
First Claim
1. Medical technical compression implant for surgical repair of damage to the spine, comprising:
- first and second vertebral clamp jaws, each with a hook-shaped portion sized to be applied over a vertebra and each with a cylindrical transverse bore;
first and second threaded nuts, each of said threaded nuts being pivotably mounted in said cylindrical transverse bore of one of said first and second jaws to each form a cylindrical rotary body, said threaded nuts each having a diametrical threaded bore, extending radially with respect to said cylindrical transverse bore;
a threaded spindle connecting said clamp jaws with hook-shaped portions facing each other, said threaded spindle having a wrench profile for attaching a rotating tool in an interlocking manner between a first threaded section and a second threaded section, said first threaded section having right hand threads and said second threaded section having left hand threads, said clamp jaws having walls surrounding said transverse bores with diametrical openings for passing through said threaded sections of said threaded spindle, said diametrical openings including an inner side opening formed as an elongated hole defining a pivot region for said threaded spindle.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical technical compression implant (1) for the surgical repair of damage to the spine, especially in the cervical region, includes two clamp jaws (3, 4), which are directed toward each other, are hook-shaped, are connected by a threaded spindle (2), and can be compressed while reducing the distance (B) between them. A wrench profile (9) for attaching a rotating tool in an interlocking manner is arranged at the threaded spindle (2) between two threaded sections (7, 8) with right-hand threads and left-hand threads, respectively. Both the clamp jaws (3, 4) have threaded nuts (5, 6), which are pivotably mounted from bodies, with diametrical threaded bores for screwing on the threaded sections (7, 8). The threaded nuts are mounted in cylindrical transverse bores of the clamp jaws (3, 4). The bore walls (21) are provided with diametrical openings (22, 23) for passing through the threaded sections (7, 8) of the threaded spindle (2). The threaded spindle (2) has, at both ends, an outwardly tapering cone (12, 13) each, which brings about pivoting of the clamp jaw (3, 4) around the axis of the transverse bore in the pulling direction, in cooperation with the inner edge or inner surface of the opening (22) designed as a radial bore.
A manipulating device in the form of a special expanding forceps is provided for implantation.
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Citations
9 Claims
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1. Medical technical compression implant for surgical repair of damage to the spine, comprising:
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first and second vertebral clamp jaws, each with a hook-shaped portion sized to be applied over a vertebra and each with a cylindrical transverse bore; first and second threaded nuts, each of said threaded nuts being pivotably mounted in said cylindrical transverse bore of one of said first and second jaws to each form a cylindrical rotary body, said threaded nuts each having a diametrical threaded bore, extending radially with respect to said cylindrical transverse bore; a threaded spindle connecting said clamp jaws with hook-shaped portions facing each other, said threaded spindle having a wrench profile for attaching a rotating tool in an interlocking manner between a first threaded section and a second threaded section, said first threaded section having right hand threads and said second threaded section having left hand threads, said clamp jaws having walls surrounding said transverse bores with diametrical openings for passing through said threaded sections of said threaded spindle, said diametrical openings including an inner side opening formed as an elongated hole defining a pivot region for said threaded spindle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification