Methods and devices for sensing tissues and tissue compartments

Details Methods and devices for sensing tissues and tissue compartments Methods and devices for sensing tissues and tissue compartments

A - Human Necessities

61

M

A61M 25/00 (2006.01) A61M 5/00 (2006.01)

Patent

CA 2714069

An apparatus provides feedback regarding the material in which tip of the apparatus is located as the tip is advanced into matter of varying resistances. The apparatus responds to a change in pressure, force, or other parameter such that when the tip reaches matter of a certain resistance, a change in the parameter is sensed. The apparatus provides a driving force to a penetrating medical device, such as a needle, when the apparatus tip encounters material of high resistance. When the apparatus tip encounters a low resistance material, no further driving force is applied to the apparatus. An inner core may be advanced into the low resistance material for deployment of a gas or a liquid as desired.

L'invention porte sur un appareil fournissant un retour d'informations concernant le matériau dans lequel la pointe de l'appareil est située pendant que la pointe avance dans une matière de résistances variables. L'appareil réagit à un changement de pression, force ou autre paramètre de telle sorte que lorsque la pointe atteint une matière d'une certaine résistance, un changement de paramètre est détecté. L'appareil fournit une force d'entraînement à un dispositif médical de pénétration, comme une aiguille, lorsque la pointe de l'appareil rencontre un matériau de résistance élevée. Lorsque la pointe de l'appareil rencontre un matériau de faible résistance, plus aucune force d'entraînement n'est appliquée à l'appareil. Un noyau interne peut être avancé dans le matériau de faible résistance pour libérer un gaz ou un liquide selon les besoins.

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