US 12,337,101 B2
Directed gas flow surgical cannula for providing gases to a patient
Pavlo Kokhanenko, Auckland (NZ); Benjamin Elliot Hardinge Pegman, Auckland (NZ); Charlotte Grace Laus, Auckland (NZ); Callum James Thomas Spence, Auckland (NZ); Abigail Sharmini Rajen Arulandu, Auckland (NZ); Zane Paul Gell, Auckland (NZ); Zach Jonathan Warner, Auckland (NZ); Vincent Verdoold, Auckland (NZ); Gabor Papotti, Auckland (NZ); German Klink, Auckland (NZ); Richard John Boyes, Auckland (NZ); Bernard Tsz Lun Ip, Auckland (NZ); Monika Baumann, Auckland (NZ); James Robert Jarmey Greenfield, Auckland (NZ); Katie-Ann Jane Buckels, Auckland (NZ); Donald Roy Kuriger, Auckland (NZ); Joshua Robert Lee, Auckland (NZ); Jesus Antonio Amador Noriega, Auckland (NZ); and James Michael Gilbert, Auckland (NZ)
Assigned to Fisher & Paykel Healthcare Limited, Auckland (NZ)
Appl. No. 17/269,145
Filed by FISHER & PAYKEL HEALTHCARE LIMITED, Auckland (NZ)
PCT Filed Aug. 16, 2019, PCT No. PCT/NZ2019/050100
§ 371(c)(1), (2) Date Feb. 17, 2021,
PCT Pub. No. WO2020/036498, PCT Pub. Date Feb. 20, 2020.
Claims priority of provisional application 62/719,550, filed on Aug. 17, 2018.
Prior Publication US 2021/0236749 A1, Aug. 5, 2021
Int. Cl. A61B 17/34 (2006.01); A61B 1/12 (2006.01); A61M 13/00 (2006.01)
CPC A61M 13/003 (2013.01) [A61B 1/127 (2013.01); A61B 17/3423 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/36 (2013.01); A61M 2206/20 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A surgical cannula for providing insufflation gases to a surgical cavity and providing a passage for insertion of one or more medical instruments, the cannula comprising:
a cannula body including an inlet;
an elongate shaft extending from the cannula body, the shaft defining a lumen defined by a sidewall, the lumen configured to provide the insufflation gases to the surgical cavity between a gases inlet and an outlet proximate a distal end of the elongate shaft, the lumen in fluid communication with the inlet and the outlet, the lumen also configured to receive a medical instrument therethrough; and
a guide element disposed on, within, or around at least a portion of the lumen, the guide element configured to limit radial movement of the medical instrument within the lumen and prevent the medical instrument from contacting the sidewall of the lumen such that as the gases flow along the lumen from the inlet to the outlet of the lumen the gases flow around the medical instrument and create an envelope of insufflation gases that extends along and distally beyond a distal end of the instrument, wherein the medical instrument is configured to extend beyond the outlet of the elongate shaft; and
wherein the gases flow along the lumen of the elongate shaft between an outer surface of the medical instrument and an inner sidewall of the lumen.