ORTHOPEDIC COMPRESSION SCREW

A cannulated compression screw has a threaded distal end with a tip that includes one or more flutes to allow the screw to be self- tapping Optionally, the screw also includes one to four reverse cutting flutes proximal to the insertion tip. The distal threads are cancellous threads having a minor d...

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Main Authors MARTIN, AMANDA, MANI, DEEPA, KAY, DAVID B, LEWIS, DEREK S
Format Patent
LanguageEnglish
French
Published 25.03.2010
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Abstract A cannulated compression screw has a threaded distal end with a tip that includes one or more flutes to allow the screw to be self- tapping Optionally, the screw also includes one to four reverse cutting flutes proximal to the insertion tip. The distal threads are cancellous threads having a minor diameter and a major diameter and a constant thread pitch. An intermediate portion of the screw is non-threaded and the proximal end includes a compression wedge or taper that has one to five flutes that terminate before the top of the screw.The proximal end further includes a radiused bevel to the terminal surface that includes a hexagonal torque driving recess. The diameter of the non-threaded shaft section is constant distal from the compression wedge to the distal tip where it defines the minor diameter of the threaded portion. The screw optionally includes a tapered insertion tip. L'invention porte sur une vis de compression cannelée qui comporte une extrémité distale filetée avec une pointe qui comprend une ou plusieurs cannelures permettant à la vis d'être autotaraudeuse. En option, la vis comprend également une ou quatre cannelures à découpe inversée proches de l'extrémité d'introduction. Les filets distaux sont des filets perforés ayant un diamètre inférieur et un diamètre supérieur et un pas de filetage constant. La partie intermédiaire de la vis est non filetée et l'extrémité proximale comprend un coin ou un cône de compression qui comporte une à cinq cannelures qui se terminent avant la partie supérieure de la vis. L'extrémité proximale comprend en outre un biseau arrondi vers la surface terminale, qui comprend une cavité hexagonale d'entraînement de couple. Le diamètre de la section de tige non filetée est constant du coin de compression à l'extrémité distale où il définit le diamètre inférieur de la partie filetée. La vis comprend facultativement un embout d'introduction fileté.
AbstractList A cannulated compression screw has a threaded distal end with a tip that includes one or more flutes to allow the screw to be self- tapping Optionally, the screw also includes one to four reverse cutting flutes proximal to the insertion tip. The distal threads are cancellous threads having a minor diameter and a major diameter and a constant thread pitch. An intermediate portion of the screw is non-threaded and the proximal end includes a compression wedge or taper that has one to five flutes that terminate before the top of the screw.The proximal end further includes a radiused bevel to the terminal surface that includes a hexagonal torque driving recess. The diameter of the non-threaded shaft section is constant distal from the compression wedge to the distal tip where it defines the minor diameter of the threaded portion. The screw optionally includes a tapered insertion tip. L'invention porte sur une vis de compression cannelée qui comporte une extrémité distale filetée avec une pointe qui comprend une ou plusieurs cannelures permettant à la vis d'être autotaraudeuse. En option, la vis comprend également une ou quatre cannelures à découpe inversée proches de l'extrémité d'introduction. Les filets distaux sont des filets perforés ayant un diamètre inférieur et un diamètre supérieur et un pas de filetage constant. La partie intermédiaire de la vis est non filetée et l'extrémité proximale comprend un coin ou un cône de compression qui comporte une à cinq cannelures qui se terminent avant la partie supérieure de la vis. L'extrémité proximale comprend en outre un biseau arrondi vers la surface terminale, qui comprend une cavité hexagonale d'entraînement de couple. Le diamètre de la section de tige non filetée est constant du coin de compression à l'extrémité distale où il définit le diamètre inférieur de la partie filetée. La vis comprend facultativement un embout d'introduction fileté.
Author KAY, DAVID B
MANI, DEEPA
MARTIN, AMANDA
LEWIS, DEREK S
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ORTHOHELIX SURGICAL DESIGNS, INC
MANI, DEEPA
MARTIN, AMANDA
LEWIS, DEREK S
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Snippet A cannulated compression screw has a threaded distal end with a tip that includes one or more flutes to allow the screw to be self- tapping Optionally, the...
SourceID epo
SourceType Open Access Repository
SubjectTerms BANDAGES, DRESSINGS OR ABSORBENT PADS
DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS
DIAGNOSIS
FILTERS IMPLANTABLE INTO BLOOD VESSELS
FIRST-AID KITS
FOMENTATION
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES
PROSTHESES
SURGERY
TREATMENT OR PROTECTION OF EYES OR EARS
Title ORTHOPEDIC COMPRESSION SCREW
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