[특허]Method for producing reduced porosity bone cement

Method for producing reduced porosity bone cement 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01F-013/06
출원번호	US-0013074 (1993-02-03)
우선권정보	SE-0000360 (1992-02-07); JP-0021284 (1992-02-06); JP-0021284 (1992-02-06); JP-0054129 (1992-02-06)
발명자 / 주소	Lidgren Lars A. A. (Lund SEX) Dahl Lars G. (Lund SEX)
출원인 / 주소	Mit AB (Sjobo SEX 03)
인용정보	피인용 횟수 : 77 인용 특허 : 0

초록 ▼

A method for producing bone cement by mixing components forming part thereof, whereby mixing occurs in vacuum in a mixing device (1) and whereby ready-mixed bone cement (2) is collected in the mixing device (1) before it is ejected or discharged therefrom. For reducing the volume of porosity of the pores formed in the bone cement (2) during collection, the bone cement (2) is collected in vacuum to provide vacuum in those pores in the bone cement (2) which are formed during collection, whereby the volume of porosity in the bone cement (2) is reduced when the bone cement is subjected to atmospheric pressure after collection. A device for carrying out this method comprises a movable member (6), preferably a movable piston, which is adapted for pressing out or discharging bone cement (2) from the mixing device (1), which is fixedly mounted for maintaining its position when bone cement (2) is mixed in vacuum and which is releasable such that it can be sucked into the mixing device (1) towards a discharge opening (13 ) when vacuum prevails in said mixing device (1) for collecting or gathering bone cement (2) in said mixing device (1) closest to the discharge opening (13).

대표청구항 ▼

A method for producing bone cement by mixing components forming a part thereof, said method comprising the steps of (1) mixing said components under vacuum in a mixing space of a mixing device, whereby clumps of bone cement adhere to an inner wall surface of said mixing space, and (2) collecting said clumps of bone cement in said mixing space close to a discharge opening which is adapted to discharge bone cement from said mixing space, wherein said collecting step includes the steps of (a) exposing said bone cement in said mixing space to vacuum, and (b) moving a piston through said mixing space towards said discharge opening to collect said bone cement near said discharge opening, thereby providing vacuum in those pores in said bone cement which are formed during collection of the bone cement clumps, whereby said pores formed in said bone cement are reduced in size when said bone cement is ultimately subjected to atmospheric pressure after collection.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Method for producing reduced porosity bone cement 원문보기

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Method for producing reduced porosity bone cement 원문보기

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연구과제 타임라인

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