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US 6,113,639 AGranted
Trial implant and trial implant kit for evaluating an intradiscal space
AssigneeRaymedica, Inc.
InventorsCharles D. Ray, Robert L. Assell
Life of this patent
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AssigneeRaymedica, Inc.
InventorsCharles D. Ray, Robert L. Assell
Estimating the term…
A trial implant for evaluating a size of an intradiscal space for subsequent implantation of a prosthetic spinal disc nucleus. The trial implant is comprised of an elongated central body and a retrieving body. The elongated body is formed from a rigid, surgically safe material and preferably has a volume less than a volume of a nucleus cavity portion of the intradiscal space. The retrieving body is associated with the central body and is configured to facilitate retrieval of the trial implant from an enclosed area, such as the nucleus cavity. A plurality of trial implants are included with a trial implant kit, with each of the plurality of trial implants housing a different size and/or shape. During use, the trial implant provides an indication as to whether a similarly sized prosthetic spinal disc nucleus will fit within a particular intradiscal space.
A trial implant for evaluating a size of a nucleus cavity portion of an intradiscal space, the nucleus cavity defined by an opposing pair of vertebral bodies and an anulus, the trial implant comprising:
A trial implant for evaluating a size of a nucleus cavity portion of an intradiscal space, the nucleus cavity defined by an opposing pair of vertebral bodies and an anulus, the trial implant comprising:
A kit for use in evaluating a size of a nucleus cavity for receiving a prosthetic spinal disc nucleus, the nucleus cavity defined by an opposing pair of vertebral bodies and an anulus, the kit comprising:
A method of evaluating a size of an intradiscal space for receiving a prosthetic spinal disc nucleus, the space including an intradiscal nucleus cavity defined by an opposing pair of vertebral bodies and an anulus, the method comprising:
Dependencies are inferred from the claim text.