Tissue resecting system

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United States of America Patent

PATENT NO 8852085
SERIAL NO

13860654

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Abstract

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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.

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Patent Owner(s)

  • COVIDIEN LP

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hedstrom, Petter Haverhill, US 13 530
Krause, Kenneth W Sandown, US 58 8223
Newell, Christopher R Haverhill, US 7 355
Shener-Irmakoglu, Cemal Woburn, US 22 508

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