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Patent Agency Ranking
公开(公告)号：US12017410B1
公开(公告)日：2024-06-25
申请号：US18380500
申请日：2023-10-16
Applicant: Worcester Polytechnic Institute
Inventor： Ethan R. Wilke , Loris Fichera , Nicholas E. Pacheco
IPC: B33Y10/00 , B29C64/118 , B29C64/209 , B33Y30/00
CPC classification number: B29C64/209 , B29C64/118 , B33Y10/00 , B33Y30/00
Abstract: A nozzle apparatus for a 3D printer employs a center post or shape and extrudes a circumferential, tubular form having a central void. The nozzle includes a radial arrangement of prongs or supports around a center post, which provides space for molten print medium to flow in a 360° form around the center post. The nozzle extrudes a hollow tubular form around the post that can lay a tube shaped article on a perpendicular print bed, or can be used to deposit high resolution, hollow cylindrical segments for forming lightweight articles with less volume of print medium required due to the hollow extruded shape. A stream of air or gas may be emitted into the center of the extrusion for maintaining a tubular shape. Other suitable shapes may be employed by altering the contour of the center post and the bore.
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公开(公告)号：US20240208141A1
公开(公告)日：2024-06-27
申请号：US18380500
申请日：2023-10-16
Applicant: Worcester Polytechnic Institute
Inventor： ETHAN R. WILKE , Loris Fichera , Nicholas E. Pacheco
IPC: B29C64/209 , B29C64/118 , B33Y10/00 , B33Y30/00
CPC classification number: B29C64/209 , B29C64/118 , B33Y10/00 , B33Y30/00
Abstract: A nozzle apparatus for a 3D printer employs a center post or shape and extrudes a circumferential, tubular form having a central void. The nozzle includes a radial arrangement of prongs or supports around a center post, which provides space for molten print medium to flow in a 360° form around the center post. The nozzle extrudes a hollow tubular form around the post that can lay a tube shaped article on a perpendicular print bed, or can be used to deposit high resolution, hollow cylindrical segments for forming lightweight articles with less volume of print medium required due to the hollow extruded shape. A stream of air or gas may be emitted into the center of the extrusion for maintaining a tubular shape. Other suitable shapes may be employed by altering the contour of the center post and the bore.
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公开(公告)号：US20200289201A1
公开(公告)日：2020-09-17
申请号：US16817280
申请日：2020-03-12
Applicant: Worcester Polytechnic Institute
Inventor： Loris Fichera , Kevin O'Brien , Zachary R. Boyer , Cory T. Brolliar , Benjamin G. Mart , Gregory S. Fischer , Kenneth Stafford , Thomas Carroll
Abstract: An articulating, steerable surgical probe includes an elongated, flexible transfer tube adapted for insertion into a surgical region for endoscopic laryngeal laser surgery. A lumen is defined by an interior of the transfer tube, and a laser fiber extends through the lumen for delivering a therapeutic laser signal to a distal end of the laser fiber. An articulating tip at the distal end of the transfer tube is responsive to articulating forces from a retractable tether for directing the treatment probe in a direction of the articulation, and a linkage to the tether from a control module effects controlled retraction of the tether for articulating the tip towards a surgical target, such that the articulating tip imposing a bend radius based on a signal loss through the laser fiber.
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公开(公告)号：US11602266B2
公开(公告)日：2023-03-14
申请号：US16817280
申请日：2020-03-12
Applicant: Worcester Polytechnic Institute
Inventor： Loris Fichera , Kevin O'Brien , Zachary R. Boyer , Cory T. Brolliar , Benjamin G. Mart , Gregory S. Fischer , Kenneth Stafford , Thomas Carroll , Karim A. Tarabein
Abstract: An articulating, steerable surgical probe includes an elongated, flexible transfer tube adapted for insertion into a surgical region for endoscopic laryngeal laser surgery. A lumen is defined by an interior of the transfer tube, and a laser fiber extends through the lumen for delivering a therapeutic laser signal to a distal end of the laser fiber. An articulating tip at the distal end of the transfer tube is responsive to articulating forces from a retractable tether for directing the treatment probe in a direction of the articulation, and a linkage to the tether from a control module effects controlled retraction of the tether for articulating the tip towards a surgical target, such that the articulating tip imposing a bend radius based on a signal loss through the laser fiber.
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公开(公告)号：US20220313358A1
公开(公告)日：2022-10-06
申请号：US17711100
申请日：2022-04-01
Applicant: Worcester Polytechnic Institute
Inventor： Andrea Arnold , Loris Fichera
Abstract: A method of assessing optical properties of surgical tissue by observing the tissue thermal response to laser irradiation includes exposing the tissue in a surgical region to a short laser pulse for triggering a localized temperature increase, and observing the triggered temperature increase by a thermal sensor. Optical properties of the tissue are then estimated, for determining laser surgery parameters for an eminent procedure, based on the observed temperature increase. In an example configuration, the thermal sensor is a thermal infrared camera, and estimation includes using an Ensemble Kalman Filter (EnKF) for comparing the temperature sensor data with the output of a computational laser-tissue interaction model.
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