[특허]Bone screw

Bone screw 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61B-017/86
출원번호	US-0952418 (2015-11-25)
등록번호	US-9827028 (2017-11-28)
우선권정보	EP-10154810 (2010-02-26)
발명자 / 주소	Biedermann, Lutz Matthis, Wilfried
출원인 / 주소	Biedermann Technologies GmbH & Co. KG
대리인 / 주소	Lewis Roca Rothgerber Christie LLP
인용정보	피인용 횟수 : 0 인용 특허 : 44

초록 ▼

A bone screw is provided that includes a tubular body having a first end and a closed second end. The tubular body has a tubular wall defining a cavity wherein the thickness of the wall in a radial direction is smaller than an inner radius of the cavity and wherein a plurality of recesses is provided extending entirely through the tubular wall into the cavity. The tubular body further includes an exterior bone thread on an exterior tubular surface portion of the tubular wall, a head at the first end configured to engage with a driver to advance the bone screw in the bone, and a tip at the second end. The tubular body, the head and the tip are formed as a single piece.

대표청구항 ▼

1. A bone screw comprising: a tubular body having a longitudinal axis and a first end and a second end at opposite ends of said longitudinal axis, wherein the tubular body has a tubular wall defining a thickness and a cavity, wherein the thickness of the wall in a radial direction is smaller than an inner radius of the cavity, wherein the tubular wall has a length extending from the first end to the second end along the longitudinal axis and wherein a plurality of recesses are provided extending entirely through the tubular wall into the cavity;an exterior bone thread on an exterior tubular surface of the tubular wall, the exterior bone thread extending along a majority of the length;a head at the first end, said head having an opening providing access to said cavity;an insert having an axial bore and an axial length shorter than the length of the tubular wall for being received within said cavity; anda tip at the second end, said tip having an axial bore being coaxial with the bore of the insert when said insert is received within said cavity for receiving a guide wire through said bores;wherein the tubular body, the head and the tip are formed as a monolithic piece; andwherein a closet one of the plurality of recesses to the head is located a first axial length from the head and the axial length of the insert is less than the first axial length. 2. The bone screw of claim 1, wherein said insert is retained within said cavity by friction. 3. The bone screw of claim 1, wherein said insert is for being received and retained within said cavity proximate said head. 4. The bone screw of claim 1, further comprising a solid plug for plugging flow through said head opening. 5. The bone screw of claim 1, wherein a smallest cross-sectional dimension of the axial bore of the insert and a smallest cross-sectional dimension of the axial bore of the tip are the same size to guide a guide wire. 6. A bone screw comprising: a tubular body having a longitudinal axis and a first end and a second end at opposite ends of said longitudinal axis, wherein the tubular body has a tubular wall defining a thickness and a cavity, wherein the thickness of the wall in a radial direction is smaller than an inner radius of the cavity, wherein the tubular wall has a length extending from the first end to the second end along the longitudinal axis and wherein a plurality of recesses are provided extending entirely through the tubular wall into the cavity;an exterior bone thread on an exterior tubular surface of the tubular wall, the exterior bone thread extending along a majority of the length;a head at the first end, said head having an opening providing access to said cavity;an insert having an axial bore and an axial length shorter than the length of the tubular wall for being received within said cavity; anda tip at the second end, said tip having an axial bore being coaxial with the bore of the insert when said insert is received within said cavity for receiving a guide wire through said bores;wherein the tubular body, the head and the tip are formed as a monolithic piece; andwherein a smallest cross-sectional dimension of the axial bore of the insert and a smallest cross-sectional dimension of the axial bore of the tip are the same size to guide a guide wire. 7. The bone screw of claim 6, wherein said insert is retained with within said cavity by friction. 8. The bone screw of claim 6, wherein said insert is for being received and retained within said cavity proximate said head. 9. The bone screw of claim 6, further comprising a solid plug for plugging flow through said head opening.

이 특허에 인용된 특허 (44)

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