Tissue puncture closure device with automatic torque sensing...

F - Mech Eng,Light,Heat,Weapons – 02 – D

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F02D 41/00 (2006.01)

Patent

CA 2603886

Methods and apparatus for sealing a puncture or incision formed percutaneously in tissue separating two internal portions of the body of a living being with an anchor, a sealing plug and a filament connecting the anchor and sealing plug are disclosed. The methods and apparatus provide for automatic tamping of the sealing plug. In addition, torque required to tamp the sealing plug is automatically sensed and gear ratios of an automatic tamping device are automatically changed in response to sensed changes in torque. A planetary transmission may be used to automatically change gear ratios in response to the changes in torque.

L'invention concerne des méthodes et des dispositifs permettant l'obturation étanche d'une perforation ou d'une incision percutanée formée dans un tissu séparant deux parties internes du corps d'un être vivant, au moyen d'un ancrage, d'un obturateur étanche, et d'un filament reliant l'ancrage et l'obturateur. Ces méthodes et ces dispositifs permettent le tassement automatique de l'obturateur. En outre, le couple nécessaire au tassement de l'obturateur est détecté automatiquement, et les rapports de démultiplication du dispositif de tassement automatique sont automatiquement modifiés en réponse aux variations de couple détectées. Une transmission à engrenage planétaire peut être utilisée pour assurer la modification automatique des rapports de démultiplication en réponse aux variations de couple.

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