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US 12,611,312 B2Granted
Medical implant for fixation and integration with hard tissue
AssigneeLifeNet Health
InventorsJingsong Chen, Dennis Phelps, Andy T. Pritchard, Nathan Kemper, Thomas Brewer
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Abstract
The invention relates to medical implants, including spinal implants and bone grafts, for fixation and integration with hard tissue. The bone medical implants include at least one rotational fixation mechanism that further includes or is attached to one or more sharp protrusions configured to penetrate and become lodged into hard tissue to provide support and positional stability. Such support is useful to ensure that the spinal bone graft may be used without additional stabilizing or anchoring structures, such as supporting plates or screws.
Claims20
A compound medical implant for fixation and integration with hard bone tissues, the compound medical implant comprising:
- a base member including a first portion and a second portion defining a void space, each of the first portion and the second portion including a superior surface and an inferior surface opposing the respective superior surface, each of the superior surfaces and inferior surfaces configured to contact a first hard bone tissue or a second hard bone tissue of a patient;
- one or more rotational fixation mechanisms;
- one or more biocompatible rods attached to the base member, wherein:
- each biocompatible rod from the one or more biocompatible rods is approximately parallel to the superior surfaces and inferior surfaces and traverses through the void space defined by the first portion and the second portion,
- each biocompatible rod from the one or more biocompatible rods is rotatable, and
- each rotational fixation mechanism from the one or more rotational fixation mechanisms is movable using the one or more biocompatible rods;
- and
- two or more protrusions attached to the one or more rotational fixation mechanisms, each protrusion from the two or more protrusions configured to be urged into the first hard bone tissue or the second hard bone tissue by the one or more rotational fixation mechanisms,
- a first protrusion from the two or more protrusions having a first proximal end attached to the one or more rotational fixation mechanisms and a first distal end, a second protrusion from the two or more protrusions having a second proximal end attached to the one or more rotational fixation mechanisms and a second distal end, wherein:
- the first distal end of the first protrusion is configured to penetrate and become lodged into the first hard bone tissue at a first integration site of the first hard bone tissue facing the superior surface of at least one of the first portion or the second portion, and
- the second distal end of the second protrusion is configured to penetrate and become lodged into the second hard bone tissue at a second integration site of the second hard bone tissue facing the inferior surface of at least one of the first portion or the second portion.
8 more elements
A compound medical implant for fixation and integration with hard bone tissues, the compound medical implant comprising:
- a base member including a first portion and a second portion defining a void space, each of the first portion and the second portion including a superior surface and an inferior surface opposing the respective superior surface, each of the superior surfaces and inferior surfaces configured to contact a first hard bone tissue or a second hard bone tissue of a patient;
- one or more rotational fixation mechanisms;
- one or more biocompatible rods attached to the base member, wherein:
- each biocompatible rod from the one or more biocompatible rods is approximately parallel to the superior surfaces and inferior surfaces and traverses through the void space defined by the first portion and the second portion,
- each biocompatible rod from the one or more biocompatible rods is rotatable, and
- each rotational fixation mechanism from the one or more rotational fixation mechanisms is movable using the one or more biocompatible rods;
- and
- one or more protrusions attached to each of the one or more rotational fixation mechanisms, each protrusion from the one or more protrusions configured to be urged into the first hard bone tissue or the second hard bone tissue by the one or more rotational fixation mechanisms,
- each protrusion from the one or more protrusions having a proximal end attached to the one or more rotational fixation mechanisms and a distal end, wherein:
- at least a distal end of a first protrusion from the one or more protrusions is configured to penetrate and become lodged into the first hard bone tissue at a first integration site of the first hard bone tissue facing the superior surface of at least one of the first portion or the second portion, and
- at least a distal end of a second protrusion from the one or more protrusions is configured to penetrate and become lodged into the second hard bone tissue at a second integration site of the second hard bone tissue facing the inferior surface of at least one of the first portion or the second portion.
8 more elements
Dependencies are inferred from the claim text.