EP0413549A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Tensioning means for prosthetic devices
Assignee: 3M Co
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Filing: 1990-08-14
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Granted: —
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Expires: 2010-08-14
Abstract
Abstract This invention provides improved prosthetic devices for the replacement of a ligament or a tendon. The tension borne by the prosthetic ligament or tendon can be readily increased or decreased without disturbing the attachment of the device to bone and without removal of the prosthetic ligament or tendon from the other components of the device.
Inventors
- 👤 Steven J. May
- 👤 Craig L. Van Kampen
- 👤 David L. Butler
- 👤 Edward S. Grood
- 👤 Steven D. Hoffman
- 👤 Frank R. Noyes
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 13:52
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08; A61F2/0811; A61F2002/0817; A61F2002/0823; A61F2002/0829; A61F2002/0847; A61F2002/0852; A61F2002/0864; A61F2002/087; A61F2002/0876; A61F2002/0882
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
202 words
A device for surgical replacement of ligament, comprising: a prosthetic ligament; a fixed connector adapted to be attached to living bone and adapted to engage the prosthetic ligament; and an adjustable connector adapted to be attached to living bone and adapted to engage the prosthetic ligament; wherein when the fixed connector and the adjustable connector are fixed into position and the prosthetic ligament is positioned therebetween and engaged with both, the tension on the prosthetic ligament can be increased or decreased without disturbing the attachment of the device to the bone, and without removal of the prosthetic ligament from either of the connectors; and wherein the adjustable connector comprises: an anchor adapted to be attached to living bone and having walls defining a socket; a pin comprising a shaft, a head adapted to engage the socket, and a threaded end opposite the head; and a cylinder comprising a body, which body (i) has a threaded bore therein, the threaded bore being adapted to engage the threaded end of the pin, and (ii) comprises means for engaging the prosthetic ligament, the device being further characterized in that there exists access to the head of the pin to facilitate adjustment of the adjustable connector.
Claim 2
Independent Claim
202 words
A device for surgical replacement of ligament, comprising: a prosthetic ligament; a fixed connector adapted to be attached to living bone and adapted to engage the prosthetic ligament; and an adjustable connector adapted to be attached to living bone and adapted to engage the prosthetic ligament; wherein when the fixed connector and the adjustable connector are fixed into position and the prosthetic ligament is positioned therebetween and engaged with both, the tension on the prosthetic ligament can be increased or decreased without disturbing the attachment of the device to the bone, and without removal of the prosthetic ligament from either of the connectors; and wherein the adjustable connector comprises: an anchor adapted to be attached to living bone and having walls defining a socket; a pin comprising a shaft, a head adapted to engage the socket, and a threaded end opposite the head; and a cylinder comprising a body, which body (i) has a threaded bore therein, the threaded bore being adapted to engage the threaded end of the pin, and (ii) comprises means for engaging the prosthetic ligament, the device being further characterized in that there exists access to the head of the pin to facilitate adjustment of the adjustable connector.
Claim 3
Dependent Claim
20 words
A device according to Claim 1, wherein the socket and the head are rounded, permitting swivel movement of the pin.
Claim 4
Dependent Claim
17 words
A device according to Claim 2, wherein the means for engaging the prosthetic ligament is a ring.
Claim 5
Dependent Claim
32 words
A device according to Claim 3, wherein the body of the cylinder has flutes on its outer surface, which flutes are adapted to impart and/or engage corresponding recesses in a bone tunnel.
Claim 6
Independent Claim
200 words
A device for surgical replacement of ligament, comprising: a prosthetic ligament; a fixed connector adapted to be attached to living bone and adapted to engage the prosthetic ligament; and an adjustable connector adapted to be attached to living bone and adapted to engage the prosthetic ligament; wherein when the fixed connector and the adjustable connector are fixed into position and the prosthetic ligament is positioned therebetween and engaged with both, the tension on the prosthetic ligament can be increased or decreased without disturbing the attachment of the device to the bone, and without removal of the prosthetic ligament from either of the connectors; and wherein the adjustable connector comprises: a spool having a ratchet plate attached and having means for engaging the prosthetic ligament; an attachment plate adapted to be attached to living bone and having a mating surface adapted to engage the ratchet plate; and means, for fastening the spool to the attachment plate which means can be either partially or fully engaged; whereby when the means for fastening is partially engaged, the spool can be rotated to adjust the tension on the prosthetic ligament, and when the means for fastening is fully engaged the spool can not rotate.
Claim 7
Independent Claim
200 words
A device for surgical replacement of ligament, comprising: a prosthetic ligament; a fixed connector adapted to be attached to living bone and adapted to engage the prosthetic ligament; and an adjustable connector adapted to be attached to living bone and adapted to engage the prosthetic ligament; wherein when the fixed connector and the adjustable connector are fixed into position and the prosthetic ligament is positioned therebetween and engaged with both, the tension on the prosthetic ligament can be increased or decreased without disturbing the attachment of the device to the bone, and without removal of the prosthetic ligament from either of the connectors; and wherein the adjustable connector comprises: a spool having a ratchet plate attached and having means for engaging the prosthetic ligament; an attachment plate adapted to be attached to living bone and having a mating surface adapted to engage the ratchet plate; and means, for fastening the spool to the attachment plate which means can be either partially or fully engaged; whereby when the means for fastening is partially engaged, the spool can be rotated to adjust the tension on the prosthetic ligament, and when the means for fastening is fully engaged the spool can not rotate.
Claim 8
Independent Claim
180 words
A device for surgical replacement of ligament, comprising: a prosthetic ligament; a fixed connector adapted to be attached to living bone and adapted to engage the prosthetic ligament; and an adjustable connector adapted to be attached to living bone and adapted to engage the prosthetic ligament; wherein when the fixed connector and the adjustable connector are fixed into position and the prosthetic ligament is positioned therebetween and engaged with both, the tension on the prosthetic ligament can be increased or decreased without disturbing the attachment of the device to the bone, and without removal of the prosthetic ligament from either of the connectors; and wherein the adjustable connector comprises: a cleat plate adapted to be attached to living bone and having a plurality of cleats thereon, the cleats being adapted to engage the prosthetic ligament, wherein there exist a plurality of routes around the cleats for the prosthetic ligament, leading to a point of engagement between the cleat plate and the prosthetic ligament, each route having a different path length and hence causing a different tension on the prosthetic ligament.
Claim 9
Independent Claim
180 words
A device for surgical replacement of ligament, comprising: a prosthetic ligament; a fixed connector adapted to be attached to living bone and adapted to engage the prosthetic ligament; and an adjustable connector adapted to be attached to living bone and adapted to engage the prosthetic ligament; wherein when the fixed connector and the adjustable connector are fixed into position and the prosthetic ligament is positioned therebetween and engaged with both, the tension on the prosthetic ligament can be increased or decreased without disturbing the attachment of the device to the bone, and without removal of the prosthetic ligament from either of the connectors; and wherein the adjustable connector comprises: a cleat plate adapted to be attached to living bone and having a plurality of cleats thereon, the cleats being adapted to engage the prosthetic ligament, wherein there exist a plurality of routes around the cleats for the prosthetic ligament, leading to a point of engagement between the cleat plate and the prosthetic ligament, each route having a different path length and hence causing a different tension on the prosthetic ligament.
Claim 10
Dependent Claim
15 words
A device as in Claim 6 wherein the cleat plate further comprises a guide hole.
Claim 11
Dependent Claim
157 words
A connector for adjustably attaching one end of a prosthetic ligament to living bone comprising: an anchor adapted to be attached to living bone and having walls defining a socket; a pin comprising a shaft, a head adapted to engage the socket, and a threaded end opposite the head; and a cylinder comprising a body, which body (i) has a threaded bore therein, the threaded bore being adapted to engage the threaded end of the pin, and (ii) comprises a means for engaging the prosthetic ligament; the connector being further characterized in that there exists access to the head of the pin for adjusting the position of the pin within the threaded bore of the cylinder so that when the connector is engaged with the prosthetic ligament, the tension on the prosthetic ligament can be increased or decreased without disturbing the attachment of the anchor to the bone and without disengaging the prosthetic ligament from the cylinder.
Claim 12
Dependent Claim
157 words
A connector for adjustably attaching one end of a prosthetic ligament to living bone comprising: an anchor adapted to be attached to living bone and having walls defining a socket; a pin comprising a shaft, a head adapted to engage the socket, and a threaded end opposite the head; and a cylinder comprising a body, which body (i) has a threaded bore therein, the threaded bore being adapted to engage the threaded end of the pin, and (ii) comprises a means for engaging the prosthetic ligament; the connector being further characterized in that there exists access to the head of the pin for adjusting the position of the pin within the threaded bore of the cylinder so that when the connector is engaged with the prosthetic ligament, the tension on the prosthetic ligament can be increased or decreased without disturbing the attachment of the anchor to the bone and without disengaging the prosthetic ligament from the cylinder.
Claim 13
Dependent Claim
106 words
A connector for adjustably attaching one end of a prosthetic ligament to living bone comprising: a spool having a ratchet plate attached and having means for engaging the prosthetic ligament; an attachment plate adapted to be attached to living bone and having a mating surface adapted to engage the ratchet plate; and means for fastening the spool to the attachment plate which means can be either partially or fully engaged; whereby when the means for fastening is partially engaged, the spool can be rotated to adjust the tension on the prosthetic ligament, and when the means for fastening is fully engaged the spool can not rotate.
Claim 14
Dependent Claim
106 words
A connector for adjustably attaching one end of a prosthetic ligament to living bone comprising: a spool having a ratchet plate attached and having means for engaging the prosthetic ligament; an attachment plate adapted to be attached to living bone and having a mating surface adapted to engage the ratchet plate; and means for fastening the spool to the attachment plate which means can be either partially or fully engaged; whereby when the means for fastening is partially engaged, the spool can be rotated to adjust the tension on the prosthetic ligament, and when the means for fastening is fully engaged the spool can not rotate.
Claim 15
Dependent Claim
86 words
A connector for adjustably attaching one end of a prosthetic ligament to living bone comprising: a cleat plate adapted to be attached to living bone and having a plurality of cleat thereon, the cleats being adapted to engage the prosthetic ligament, wherein there exists a plurality of routes around the cleats for the prosthetic ligament, leading to a point of engagement between the cleat plate and the prosthetic ligament, each route having a different path length and hence causing a different tension on the prosthetic ligament.
Claim 16
Dependent Claim
86 words
A connector for adjustably attaching one end of a prosthetic ligament to living bone comprising: a cleat plate adapted to be attached to living bone and having a plurality of cleat thereon, the cleats being adapted to engage the prosthetic ligament, wherein there exists a plurality of routes around the cleats for the prosthetic ligament, leading to a point of engagement between the cleat plate and the prosthetic ligament, each route having a different path length and hence causing a different tension on the prosthetic ligament.
References Cited (Backward Citations)
No citation records indexed.
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