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EP0146347A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Devices for spinal fixation

Assignee: Surgicraft Ltd
•
Filing: 1984-12-13
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Granted: —
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Expires: 2004-12-13
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Abstract

Abstract @ A spinal fixation device (Fig. 1) of the type consisting of rod of biocompatible material (e.g. stainless steel) formed into a rigid rectangle has its shorter sides (11) bent in the same direction from the plane of the longer sides (12) to fit more closely upon the spine than the known flat rectangle, each shorter side (11) having two straight portions (13) at an angle to each other of between 90° and 110°, with a small radius curve (14) between them and small radius curves (15) at the corners formed with the longer sides (12). A fixation device (Fig. 8) for use on the spine of an infant or juvenile consists of similar rod formed into a rigid U-shape with a base portion (21) similar to the shorter sides (11) of the rectangle, i.e. bent from the plane of the sides (22) of the U, so that when the sides (22) are wired to the spine the wires can slide along the sides (22), to allow for growth of the spine whilst maintaining support therefor.

Inventors

  • 👤 John Dove
  • 👤 Anthony Dugard Showell

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-25 16:44
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7053

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 37 words
A device for spinal fixation consisting of rod of biocompatible material formed into a rigid rectangle, charterised in that its shorter sides (11) are bent in the same direction from the plane of the longer sides (12).
Claim 2
Independent Claim 37 words
A device for spinal fixation consisting of rod of biocompatible material formed into a rigid rectangle, charterised in that its shorter sides (11) are bent in the same direction from the plane of the longer sides (12).
Claim 3
Dependent Claim 29 words
A device as in Claim 1, characterised in that the shorter sides (11) the shorter sides lie in parallel planes perpendicular to the plane of the longer sides (12).
Claim 4
Dependent Claim 55 words
A device as in Claim 1 or Claim 2, characterised in that each shorter side (1 1) has two straight portions (13) at an angle to each other of between 90° and 110°, with a small radius curve (14) between them and small radius curves (15) at the corners formed with the longer sides (12).
Claim 5
Independent Claim 42 words
A device as in any one of Claims 1 to 3, characterised in that with at least one crossbar (17) between the longer sides (12) , the crossbar (17) being bent similarly to the shorter sides (11) and in the same direction.
Claim 6
Independent Claim 44 words
A device for spinal fixation characterised by of rod of biocompatible material formed into a rigid U-shape with a base portion (21) shorter than parallel sides (22) of the U, and with the base portion (21) bent from the plane of the sides (22).
Claim 7
Independent Claim 44 words
A device for spinal fixation characterised by of rod of biocompatible material formed into a rigid U-shape with a base portion (21) shorter than parallel sides (22) of the U, and with the base portion (21) bent from the plane of the sides (22).
Claim 8
Dependent Claim 58 words
A device as in Claim 5, characterised in that the base portion (21) of the U has two straight portions (23) at an angle to each other of between 90° and 110 0 , with a small radius curve (24) between them and small radius curves (25) at the corners formed with the sides (22) of the U.
Claim 9
Dependent Claim 46 words
A device as in Claim 5 or Claim 6, characterised in that at least one crossbar (27) bent similar to and in the same direction as the base portion (21) of the U between parallel tubular portions (26) slidable along the sides (22) of the U.
Claim 10
Independent Claim 21 words
A device as in any one of Claims 1 to 7, characterised in that with at least one integral pierced lug.
Claim 11
Independent Claim 19 words
A device as in any one of Claims 1 to 8, characterised in that formed of stainless steel rod.
Claim 12
Independent Claim 18 words
A device as in any one of Claims 1 to 8, characterised in that formed of titanium rod.

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