Instrument for the surgical treatment of an intervertebral disc by the anterior route
First Claim
1. An instrument for the surgical treatment of an intervertebral disc by the anterior route comprising:
- a guide needle;
at least two rectilinear concentric telescopic tubes adapted to be mountable on said guide-needle; and
an outer work tube concentric with said telescopic tubes and within which said telescopic tubes are slidable, said outer tube having a first end adapted to penetrate the disc to be treated, said outer tube including means at said first end for separating the vertebral bodies adjacent the disc and for maintaining such separation during the surgical treatment.
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Accused Products
Abstract
An instrument including a guide needle (1), at least two nesting concentric tubes (2-6) placed over the guide needle, and an outer working tube (7) concentric with said tubes. The tip of the outer tube (7) is provided with a device (11) for spacing apart the bodies of vertebrae adjacent to the disk and keeping them apart during surgery, while its proximal end is provided with a hand grip (8). Anterior percutaneous nuclear incision performed with said instrument enables puncture of the disk, and particularly excision of the nucleus, to be performed easily, more quickly and more effectively than with the conventional posterolateral approach, while avoiding any damage to the anatomical environment of the patient.
374 Citations
9 Claims
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1. An instrument for the surgical treatment of an intervertebral disc by the anterior route comprising:
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a guide needle; at least two rectilinear concentric telescopic tubes adapted to be mountable on said guide-needle; and an outer work tube concentric with said telescopic tubes and within which said telescopic tubes are slidable, said outer tube having a first end adapted to penetrate the disc to be treated, said outer tube including means at said first end for separating the vertebral bodies adjacent the disc and for maintaining such separation during the surgical treatment. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An instrument for the surgical treatment of an intervertebral disc by the anterior route comprising:
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a guide needle; at least two rectilinear concentric telescopic tubes adapted to be mountable on said guide-needle; and an outer work tube concentric with said telescopic tubes and within which said telescopic tubes are slidable, said outer tube having a first end adapted to penetrate the disc to be treated, said outer tube including means at said first end for separating the vertebral boding adjacent the disc and for maintaining such separation during the surgical treatment, wherein said outer tube includes; two concentric tubular elements which are axially slidable relative to each other, one of said concentric elements including a gripping handle at a second end of the outer tube opposite said first end, said one of said concentric elements including at least one opening at an end opposite said handle, and the other of said concentric elements including at least one resiliently flexible blade which projects outside said elements in a free state and is retracted when said two tubular elements are concentrically disposed, aid blade being capable of projecting through said at least one opening. - View Dependent Claims (9)
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Specification