US 11,833,082 B2
Surgical instrument for minimally invasive aspiration of tissue
Darren Kraemer, Toronto (CA)
Assigned to LIGHT MATTER INTERACTION INC., Toronto (CA)
Filed by Light Matter Interaction Inc., Toronto (CA)
Filed on Jan. 21, 2021, as Appl. No. 17/154,399.
Application 17/154,399 is a continuation of application No. 16/137,894, filed on Sep. 21, 2018, granted, now 10,925,769.
Claims priority of provisional application 62/564,019, filed on Sep. 27, 2017.
Prior Publication US 2021/0137739 A1, May 13, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 9/008 (2006.01); A61F 9/009 (2006.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01); A61B 18/20 (2006.01); A61B 18/22 (2006.01)
CPC A61F 9/00834 (2013.01) [A61F 9/009 (2013.01); A61F 9/00821 (2013.01); A61F 9/00825 (2013.01); A61B 17/00234 (2013.01); A61B 18/22 (2013.01); A61B 2018/00577 (2013.01); A61B 2018/00642 (2013.01); A61B 2018/00732 (2013.01); A61B 2018/00863 (2013.01); A61B 2018/2005 (2013.01); A61B 2218/002 (2013.01); A61B 2218/007 (2013.01); A61F 2009/0087 (2013.01); A61F 2009/00872 (2013.01); A61F 2009/00887 (2013.01); A61F 2009/00897 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An apparatus for disruption of water-containing tissue comprising:
a housing;
a source of pulsed laser radiation configured to provide pulsed laser radiation having a pulse duration in a range between 10 ps to 1 ns;
an optical waveguide at least partially housed within the housing, the optical waveguide including a flexible optical fiber, the optical waveguide being coupleable to the source of pulsed laser radiation at a proximal end of the optical waveguide to receive the pulsed laser radiation from the source of pulsed laser radiation, the optical waveguide being configured to transmit the pulsed laser radiation at a wavelength in a range of about 2700 nm to about 3300 nm to match an absorption peak of water, the pulse duration and the wavelength of the pulsed laser radiation being selected to cause impulsive heat deposition on the water-containing tissue;
at least one of a flow rate sensor or a pressure sensor positioned within at least one fluidic channel of the apparatus, the at least one of the flow rate sensor or the pressure sensor being coupled to a control system to provide a respective at least one of a flow rate sensed by the flow rate sensor or a vacuum pressure sensed by the pressure sensor to the control system; and
a driving mechanism coupled to the optical waveguide for controllably oscillating the position of the optical waveguide relative to a distal end of the housing, the driving mechanism being controlled by the control system to oscillate the position of the optical fiber as a function of a change in vacuum pressure or as a function of a relative change between pressure and flow rate.