Tissue resecting system

Details Tissue resecting system Tissue resecting system

A - Human Necessities

61

B

A61B 1/015 (2006.01)

Patent

CA 2578035

A surgical system includes a first instrument defining a first channel and a second instrument receivable by the first channel. The second instrument defines a second channel. A valve coupled to the first instrument controls fluid flow through the first channel, such that impedance of fluid flow through the first channel is substantially the same without the second instrument received in the first channel and with the first channel partially blocked by the second instrument. In another aspect, a surgical apparatus includes an outer member and an inner member received within the outer member to define a first channel therebetween. The inner member houses an optical lens and defines a second channel for receiving a surgical instrument. The first and second channels are configured such that a pump having an inflow rate of up to about 0.7 L/min connected to the second channel can maintain fluid pressure inside an organ.

L'invention concerne un système chirurgical comprenant un premier instrument définissant un premier canal et un second instrument pouvant être reçu dans le premier canal. Le second instrument définit un second canal. Une vanne couplée au premier instrument régule l'écoulement du fluide à travers le premier canal, de sorte que l'impédance de l'écoulement de fluide à travers le canal est sensiblement le même que lorsque le second instrument n'est pas placé dans le premier canal, et que le premier canal est partiellement bloqué par le second instrument. Selon un autre aspect de l'invention, un appareil chirurgical comprend un élément extérieur et un élément intérieur placé à l'intérieur de l'élément extérieur, ceci permettant de définir un premier canal entre eux. L'élément interne comporte une lentille optique et définit un second canal destiné à recevoir un instrument chirurgical. Le premier et le second canal sont configurés de façon à ce qu'une pompe présentant un débit d'entrée supérieur à environ 0.7 L/min et qui est reliée au second canal puisse maintenir la pression fluidique à l'intérieur d'un organe.

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