로그인시 본인확인과정이 필요할 수 있습니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기
| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0973533 (1992-11-09) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 329 인용 특허 : 0 |
An instrument for removing tissue samples from a tissue mass which automatically penetrates, severs, and removes a tissue portion for examination. The instrument is motor powered, preferably by self-contained rechargeable batteries, and employs electrically actuated stops to control the action of pe
An instrument for removing tissue samples from a tissue mass which automatically penetrates, severs, and removes a tissue portion for examination. The instrument is motor powered, preferably by self-contained rechargeable batteries, and employs electrically actuated stops to control the action of penetration into and retraction from the tissue mass. The tissue penetrating means and severing means includes an inner stylet which penetrates the tissue mass and a hollow outer tube or cannula which surrounds the stylet and serves to sever a sample of tissue. In a preferred form the tissue penetrating end of the stylet is notched so that when the stylet penetrates the tissue mass, a portion of the tissue relaxes in the notched area. After tissue penetration by the stylet, the cannula, having a cutting surface at its distal end, penetrates the tissue and cuts off the tissue portion residing in the notched area of the stylet. The tissue penetrating and severing means are operably connected to a motor powered rotary cam assembly by means of cam followers and the rotary motion of the cam is converted to sequential, linear motion in the tissue penetrating means and severing means. The angular position of a cam is monitored with a pair of optoelectronic sensors, thereby providing position feedback without mechanical wear on the position sensor assembly. Improved action is provided by a cam having an S-curve profile.
An electronic biopsy instrument, comprising: a cannula; a stylet slidably mounted in said cannula; electromechanical actuator means for producing sequential linear motion of said stylet and cannula, said actuator means including means for extending said stylet and thereafter extending said cannula,
An electronic biopsy instrument, comprising: a cannula; a stylet slidably mounted in said cannula; electromechanical actuator means for producing sequential linear motion of said stylet and cannula, said actuator means including means for extending said stylet and thereafter extending said cannula, and means for producing reciprocating motion of said stylet and cannula; position sensing means for sensing the position of said cannula; electronic control means connected to said position sensing means for controlling said actuator means, said control means including means responsive to said position sensing means for stopping the motion of said stylet and cannula when said cannula reaches a predefined extended position whereby said cannula and stylet are both extended, when said cannula reaches a predefined retracted position whereby said cannula is retracted and said stylet is extended, and when said stylet reaches a predefined retracted position whereby said cannula and said stylet are both retracted; and switch means for actuating said electronic control means; wherein said position sensing means includes first means for detecting when said cannula reaches said predefined extended position and when said stylet reaches said predefined retracted position, and second means for detecting when said cannula reaches said predefined retracted position, said first and second means for detecting comprising first and second wiperless sensors, respectively.
Copyright KISTI. All Rights Reserved.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.