Interspinous prosthesis
First Claim
1. Interspinous prosthesis, comprising:
- an interspinous portion having a thickness slightly greater than the anatomical interspinous space when the spine is in lordosis, such that the interspinous portion is compressed slightly when the prosthesis is placed between the spinous apophyses of two vertebrae, and two pairs of lugs projecting longitudinally on either side of the interspinous portion;
wherein, the interspinous prosthesis is composed of a multi-directionally flexible and elastic material, each pair of lugs is integral with the interspinous portion and delimits a deep recess for receiving the corresponding spinous apophysis with a wide surface area of contact between the lugs and the apophysis, and the two pairs of lugs have a length substantially larger than a length of the interspinous portion such that the lugs bear against the spinous apophyses when the interspinous portion is compressed.
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Accused Products
Abstract
This prosthesis is made of a material which is mult-directionally flexible and elastic, and comprises an interspinous portion having a thickness slightly greater than the anatomical interspinous space when the spine is in lordosis. According to the invention, the prosthesis has two pairs of lugs projecting longitudinally on either side of its interspinous portion, these lugs having substantial heights in relation to the total height of the prosthesis, namely, for each pair of lugs, of the order of 30 to 45% of this total height; each pair of lugs is integral with the said interspinous portion and delimits a deep recess which is able to receive the corresponding spinous apophysis without play, with a wide surface area of contact between these lugs and this apophysis.
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Citations
12 Claims
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1. Interspinous prosthesis, comprising:
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an interspinous portion having a thickness slightly greater than the anatomical interspinous space when the spine is in lordosis, such that the interspinous portion is compressed slightly when the prosthesis is placed between the spinous apophyses of two vertebrae, and two pairs of lugs projecting longitudinally on either side of the interspinous portion;
wherein, the interspinous prosthesis is composed of a multi-directionally flexible and elastic material, each pair of lugs is integral with the interspinous portion and delimits a deep recess for receiving the corresponding spinous apophysis with a wide surface area of contact between the lugs and the apophysis, and the two pairs of lugs have a length substantially larger than a length of the interspinous portion such that the lugs bear against the spinous apophyses when the interspinous portion is compressed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification