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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0575601 (1995-12-20) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 405 인용 특허 : 0 |
A bone fixation apparatus having an elongated plate member with at least two pairs of circular openings and a series of openings positioned along the longitudinal plane of the plate member with the circular openings and the series of openings each having a central vertical axis. The circular opening
A bone fixation apparatus having an elongated plate member with at least two pairs of circular openings and a series of openings positioned along the longitudinal plane of the plate member with the circular openings and the series of openings each having a central vertical axis. The circular openings and series of openings each form a cavity with walls extending between the upper and lower plate member surfaces with at least a plurality of the cavities having smaller diameter portions at the plate member upper and lower surfaces and a larger diameter portion therebetween. The cavities are configured in the shape of two inverted cones with matching base circles for allowing transverse and longitudinal angulation of an implanted bone screw. A plurality of bone screws each have a threaded first end portion adapted for implantation into a patient\s bone mass and a generally ellipsoid shaped enlarged second end portion. A locking member connects to the second end portion of each bone screw for expanding the second end portion so as to grip the cavity wall of the plate member and for locking each bone screw into a selected position within the circular openings and series of openings of the plate member.
A bone fixation apparatus, comprising: a) an elongated plate member having a longitudinal plane, a longitudinal axis, upper and lower surfaces, apposed longitudinal side edges, at least two pairs of first circular openings and a series of second openings positioned along the longitudinal plane of th
A bone fixation apparatus, comprising: a) an elongated plate member having a longitudinal plane, a longitudinal axis, upper and lower surfaces, apposed longitudinal side edges, at least two pairs of first circular openings and a series of second openings positioned along the longitudinal plane of the plate member, said first circular openings and said series of second openings each having a central vertical axis; b) said first circular openings and said series of second openings each forming a cavity with walls extending between the upper and lower plate member surfaces with at least a plurality of said cavities having smaller diameter portions at the plate member upper and lower surfaces and a larger diameter portion therebetween, said cavities being configured in the shape of two inverted cones with matching base circles for allowing transverse and longitudinal angulation of an implanted bone screw; c) said plate member having a first end, a second end and a center portion with the apposed longitudinal side edges having a smaller width at the center portion in relation to a larger width at the first and second ends; d) said one pair of first circular openings being positioned at the first end of the plate member and the second pair of first circular openings being positioned at the second end of the plate member; e) wherein the series of second openings includes a plurality of second openings having a diameter and positioned along the longitudinal plane of the plate with each second opening being connected to a next second opening by a narrow slot having a width not greater than 1/2the diameter of the second opening which allows for controlled flexing of the plate.
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