US5236460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertebral body prosthesis
Assignee: Midas Rex LP
•
Filing: 1991-10-10
•
Granted: 1993-08-17
•
Expires: 2011-10-10
Abstract
Abstract A vertebral prosthesis locates between vertebral bodies of a human body. The prosthesis has tubular inner and outer bodies that telescope relative to each other. Each body has a platform on its end. The platform secures to adjacent vertebral bodies. Sharp pins on the platform pierce the vertebral bodies to stabilize the prosthesis. A bracket slides laterally and secures by screws to sides of the vertebral bodies.
Inventors
- 👤 Forest C. Barber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:20
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4603; A61F2/4611; A61F2/44; A61F2/441; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61F2/48; A61F2/484; A61F2002/30001; A61F2002/30316; A61F2002/30535; A61F2002/30537; A61F2002/3055; A61F2002/30565; A61F2002/30566; A61F2002/30576; A61F2002/30578; A61F2002/30579; A61F2002/30589; A61F2002/30593; A61F2002/30601; A61F2/30767; A61F2/30771; A61F2002/30841; A61F2002/30878; A61F2002/30891; A61F2002/30892; A61F2002/4625; A61F2002/4627; Y; Y10; Y10T; Y10T403/00; Y10T403/22; Y10T403/32; Y10T403/32254; Y10T403/32467; Y10T403/32516
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
228 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; and wherein each of the securing means comprises: a plurality of pins, each protruding in an axial direction from one of the platforms for anchoring in holes in one of the vertebral bodies; a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 2
Dependent Claim
228 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; and wherein each of the securing means comprises: a plurality of pins, each protruding in an axial direction from one of the platforms for anchoring in holes in one of the vertebral bodies; a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 3
Dependent Claim
234 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; and wherein each of the securing means comprises: a plurality of pins, each having a sharp tip, each protruding in an axial direction from one of the platforms for piercing and anchoring in soft portions of the vertebral bodies; a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 4
Dependent Claim
234 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; and wherein each of the securing means comprises: a plurality of pins, each having a sharp tip, each protruding in an axial direction from one of the platforms for piercing and anchoring in soft portions of the vertebral bodies; a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 5
Dependent Claim
204 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; and wherein at least one of the securing means comprises: a pin having a sharp tip protruding in an axial direction through a hole provided in one of the platforms; and a piston carried in the outer body for relative movement thereto, the pin being mounted to the piston for movement therewith, the liquid being introduced into the outer body causing the piston to move to cause the pin to pierce and anchor in soft portions of one of the vertebral bodies.
Claim 6
Dependent Claim
204 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; and wherein at least one of the securing means comprises: a pin having a sharp tip protruding in an axial direction through a hole provided in one of the platforms; and a piston carried in the outer body for relative movement thereto, the pin being mounted to the piston for movement therewith, the liquid being introduced into the outer body causing the piston to move to cause the pin to pierce and anchor in soft portions of one of the vertebral bodies.
Claim 7
Dependent Claim
201 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; and wherein each of the securing means comprises: a pin having a sharp time protruding in an axial direction through a hole provided in each of the platforms; and a piston carried in the outer body for relative movement thereto, the pin being mounted to the piston for movement therewith, the liquid being introduced into the outer body causing the piston to move axially to cause the pin to pierce and anchor in soft portions of the vertebral bodies.
Claim 8
Dependent Claim
201 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; and wherein each of the securing means comprises: a pin having a sharp time protruding in an axial direction through a hole provided in each of the platforms; and a piston carried in the outer body for relative movement thereto, the pin being mounted to the piston for movement therewith, the liquid being introduced into the outer body causing the piston to move axially to cause the pin to pierce and anchor in soft portions of the vertebral bodies.
Claim 9
Dependent Claim
276 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; and wherein at least one of the securing means comprises: a pin having a sharp tip protruding in an axial direction through a hole provided in one of the platforms; a piston carried it the outer body for relative movement thereto, the pin being mounted to the piston for movement therewith, the liquid being introduced into the outer body causing the piston to move to cause the pin to pierce and anchor in soft portions of one of the vertebral bodies; a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 10
Dependent Claim
276 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; and wherein at least one of the securing means comprises: a pin having a sharp tip protruding in an axial direction through a hole provided in one of the platforms; a piston carried it the outer body for relative movement thereto, the pin being mounted to the piston for movement therewith, the liquid being introduced into the outer body causing the piston to move to cause the pin to pierce and anchor in soft portions of one of the vertebral bodies; a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 11
Dependent Claim
246 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; a tubular inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms, the liquid being of a type which cures to a rigid mass to retain the desired length; and wherein each of the securing means comprises: a plurality of pins, each protruding in an axial direction from one of the platforms for anchoring in holes in one of the vertebral bodies; a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 12
Dependent Claim
246 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; a tubular inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms, the liquid being of a type which cures to a rigid mass to retain the desired length; and wherein each of the securing means comprises: a plurality of pins, each protruding in an axial direction from one of the platforms for anchoring in holes in one of the vertebral bodies; a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 13
Dependent Claim
251 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; a tubular inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms, the liquid being of a type which cures to a rigid mass to retain the desired length; and wherein each of the securing means comprises: a plurality of pins, each having a sharp tip, each protruding in an axial direction from one of the platforms for piercing and anchoring in soft portions of the vertebral bodies; a bracket having abase and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 14
Dependent Claim
251 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; a tubular inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms, the liquid being of a type which cures to a rigid mass to retain the desired length; and wherein each of the securing means comprises: a plurality of pins, each having a sharp tip, each protruding in an axial direction from one of the platforms for piercing and anchoring in soft portions of the vertebral bodies; a bracket having abase and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 15
Dependent Claim
258 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial fore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; check valve means located within one of the bodies for allowing liquid to be introduced into the outer body, but preventing the liquid from flowing out of the outer body; and wherein each of the securing means comprises: a plurality of pins, each protruding in an axial direction from one of the platforms for anchoring in holes in one of the vertebral bodies; a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 16
Dependent Claim
258 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial fore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; check valve means located within one of the bodies for allowing liquid to be introduced into the outer body, but preventing the liquid from flowing out of the outer body; and wherein each of the securing means comprises: a plurality of pins, each protruding in an axial direction from one of the platforms for anchoring in holes in one of the vertebral bodies; a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 17
Dependent Claim
264 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; check valve means located within one of the bodies for allowing liquid to be introduced into the outer body, but preventing the liquid from flowing out of the outer body; and wherein each of the securing means comprises: a plurality of pins, each having a sharp tip, each protruding in an axial direction from one of the platforms for piercing and anchoring in soft portions of the vertebral bodies; a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 18
Dependent Claim
264 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; an inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; securing means on each of the platforms for securing the platforms to adjacent vertebral bodies; port means for introducing a liquid into the bore of the outer body to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms; check valve means located within one of the bodies for allowing liquid to be introduced into the outer body, but preventing the liquid from flowing out of the outer body; and wherein each of the securing means comprises: a plurality of pins, each having a sharp tip, each protruding in an axial direction from one of the platforms for piercing and anchoring in soft portions of the vertebral bodies; a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
Claim 19
Dependent Claim
166 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; a tubular inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; a piston carried in the outer body for axial movement relative to the outer body; a pin mounted to the piston, the pin having a sharp tip which protrudes through a hole provided in one of the platforms; and port means for introducing a liquid into the bore of the outer body to move the piston to cause the pin to pierce and anchor within one of the vertebral bodies and to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms.
Claim 20
Dependent Claim
166 words
A vertebral prosthesis for positioning between vertebral bodies, comprising in combination: a tubular outer body having a platform on one end, a longitudinal axis and an axial bore; a tubular inner body having a cylindrical portion carried in the bore of the outer body for sliding telescoping movement along the axis of the outer body, the inner body having a platform on one end that is located exterior of the outer body; a piston carried in the outer body for axial movement relative to the outer body; a pin mounted to the piston, the pin having a sharp tip which protrudes through a hole provided in one of the platforms; and port means for introducing a liquid into the bore of the outer body to move the piston to cause the pin to pierce and anchor within one of the vertebral bodies and to cause the inner body to move axially relative to the outer body to provide a desired length for the prosthesis between platforms.
Claim 21
Dependent Claim
81 words
The prosthesis according to claim 10 further comprising: a bracket having a base and a flange which extends from one side of the bracket transverse to the base; means for mounting the base of the bracket to one of the platforms for sliding movement transverse to the axis of the outer body to position the flange at a selected lateral distance from the axis of the outer body; and fastener means for fastening the flange to one of the vertebral bodies.
References Cited (Backward Citations)
US2465677A
Cited
US2714331A
Cited
US4157715A
Cited
SU1124955A1
Cited
US4599086A
Cited
JPS62137414A
Cited
US4932969A
Cited
DE3729600A1
Cited
US4946378A
Cited
GB2219060A
Cited
US5002576A
Cited
SU1560184A1
Cited
US4932975A
Cited
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