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1. WO2008039405 - INTERLOCKING NAIL GEOMETRY AND METHOD OF USE

Publication Number WO/2008/039405
Publication Date 03.04.2008
International Application No. PCT/US2007/020568
International Filing Date 24.09.2007
IPC
A61B 17/72 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58for osteosynthesis, e.g. bone plates, screws or the like
68Internal fixation devices
72Intramedullary devices
CPC
A61B 17/72
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58for osteosynthesis, e.g. bone plates, screws, ; setting implements; or the like
68Internal fixation devices ; , including fasteners and spinal fixators, even if a part thereof projects from the skin
72Intramedullary ; pins, nails or other; devices
A61B 17/7233
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58for osteosynthesis, e.g. bone plates, screws, ; setting implements; or the like
68Internal fixation devices ; , including fasteners and spinal fixators, even if a part thereof projects from the skin
72Intramedullary ; pins, nails or other; devices
7233with special means of locking the nail to the bone
A61B 17/7283
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58for osteosynthesis, e.g. bone plates, screws, ; setting implements; or the like
68Internal fixation devices ; , including fasteners and spinal fixators, even if a part thereof projects from the skin
72Intramedullary ; pins, nails or other; devices
7283with special cross-section of the nail
Applicants
  • SIDEBOTHAM, Christopher, G. [US]/[US] (AllExceptUS)
Inventors
  • SIDEBOTHAM, Christopher, G.
Agents
  • BUFF, Ernest, D.
Priority Data
11/525,36122.09.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) INTERLOCKING NAIL GEOMETRY AND METHOD OF USE
(FR) CONFIGURATION DE CLOU VERROUILLÉ ET PROCÉDÉ D'UTILISATION ASSOCIÉ
Abstract
(EN)
An interlocking nail having an hour-glass geometry is used for repair of bone fractures. The hour-glass interlocking nail includes a proximal section, a mid section, and a distal section. Each section of the hour-glass interlocking nail has a diameter. The proximal and distal sections each have a diameter larger than the mid section so that the interlocking nail has an hour-glass geometry. The hour-glass interlocking nail comprises at least one fixation aperture located within either the proximal or distal section of the hour-glass interlocking nail. Preferably, the fixation aperture has a tapered locking design adapted to receive a screw-cone peg. The hour-glass geometry utilized by the interlocking nail is better suited to address a larger population of bone canal geometries, stressing the fracture site with known values within the healing process and preventing inadvertent perforation of the nail through the cortex of the bone. Hour-glass nail geometry more appropriately distributes stresses and promotes better healing at the bone fracture.
(FR)
La présente invention concerne un clou verrouillé possédant la forme d'un sablier, qui est destiné à réparer des fractures osseuses. Le clou verrouillé en forme de sablier selon l'invention comprend une section proximale, une section médiane et une section distale. Chaque section du clou verrouillé en forme de sablier possède un diamètre donné. Les sections proximale et distale possèdent chacune un diamètre supérieur à celui de la section médiane, ce qui confère au clou verrouillé la forme d'un sablier. Le clou verrouillé en forme de sablier est doté d'au moins une ouverture de fixation située soit dans sa section proximale soit dans sa section distale. L'ouverture de fixation possède de préférence une structure de verrouillage biseautée conçue pour recevoir une cheville à vis conique. La forme de sablier permet au clou verrouillé de convenir à un plus large éventail de formes de canaux osseux, car elle permet d'appliquer des valeurs de contrainte connues sur le site de fracture au cours du processus de guérison et d'éviter la perforation accidentelle du cortex osseux par le clou. La forme de sablier permet en outre de répartir la contrainte de manière plus appropriée et favorise une meilleure guérison au niveau de la fracture osseuse.
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