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公开(公告)号：US11877955B2
公开(公告)日：2024-01-23
申请号：US17811150
申请日：2022-07-07
Applicant: Alcon Inc.
Inventor： James Y. Chon , Robert Jeffrey Heng , Grace Chuang Liao , Ashish Sinha , Satish Yalamanchili
CPC classification number: A61F9/00781 , A61M39/0247 , A61M39/1011
Abstract: Embodiments disclosed herein relate to an infusion cannula for infusion/venting of fluids to/from the eye to control intraocular pressure. The infusion cannula includes a tubular body with a tubular inlet located at a proximal end of the tubular body and a tubular outlet located at a distal end of the tubular body. The tubular outlet is aligned with a first longitudinal axis and configured to extend through a septum of a valved cannula hub. The infusion cannula includes a retention piece extending from or coupled to the tubular body. The retention piece has an annular body surrounding the tubular body at the distal end of the tubular body and configured to be coupled to the valved cannula hub. An inner surface of the annular body has a profile configured to form a snap fit with an overhang formed along an outer surface of the valved cannula hub.
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公开(公告)号：US20230026744A1
公开(公告)日：2023-01-26
申请号：US17811150
申请日：2022-07-07
Applicant: Alcon Inc.
Inventor： James Y. Chon , Robert Jeffrey Heng , Grace Chuang Liao , Ashish Sinha , Satish Yalamanchili
Abstract: Embodiments disclosed herein relate to an infusion cannula for infusion/venting of fluids to/from the eye to control intraocular pressure. The infusion cannula includes a tubular body with a tubular inlet located at a proximal end of the tubular body and a tubular outlet located at a distal end of the tubular body. The tubular outlet is aligned with a first longitudinal axis and configured to extend through a septum of a valved cannula hub. The infusion cannula includes a retention piece extending from or coupled to the tubular body. The retention piece has an annular body surrounding the tubular body at the distal end of the tubular body and configured to be coupled to the valved cannula hub. An inner surface of the annular body has a profile configured to form a snap fit with an overhang formed along an outer surface of the valved cannula hub.
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公开(公告)号：US20220331512A1
公开(公告)日：2022-10-20
申请号：US17658833
申请日：2022-04-12
Applicant: Alcon Inc.
Inventor： Vincent A. Baxter , David Dyk , Satish Yalamanchili , Guangyao Jia , Yen-Cheng Chen
Abstract: A surgical cassette for an ophthalmic surgical system comprises an irrigation system and an aspiration system. The irrigation system is in fluid communication with a handpiece and carries fluid toward a surgical site. The aspiration system is in fluid communication with the handpiece via an aspiration conduit, and carries fluid away from the surgical site. The aspiration system comprises a chamber that expands to store fluid, and collapses to move the fluid to meet a volume demand in the aspiration conduit to mitigate a post-occlusion break surge.
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公开(公告)号：US20220331508A1
公开(公告)日：2022-10-20
申请号：US17658837
申请日：2022-04-12
Applicant: Alcon Inc.
Inventor： Vincent A. Baxter , David Dyk , Satish Yalamanchili , Guangyao Jia , Yen-Cheng Chen
Abstract: A surgical cassette for an ophthalmic surgical system includes an irrigation system and an aspiration system. The irrigation system is in fluid communication with a handpiece and carries fluid toward a surgical site. The aspiration system is in fluid communication with the handpiece and carries fluid away from the surgical site. The aspiration system includes an aspiration pump and tubing of an aspiration conduit. The aspiration pump generates a normal vacuum pressure within the aspiration conduit to carry fluid away from the surgical site during normal operation. The tubing has a larger cross-sectional area in response to normal vacuum pressure. The tubing collapses from the larger cross-sectional area to a smaller cross-sectional area in response to an occlusion; maintains the smaller cross-sectional area during a post-occlusion break surge to mitigate the post-occlusion break surge; and returns to the larger cross-sectional area after the post-occlusion break surge.
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公开(公告)号：US20190298571A1
公开(公告)日：2019-10-03
申请号：US16366425
申请日：2019-03-27
Applicant: Alcon Inc.
Inventor： Brian William McDonell , Mikhail Ovchinnikov , Yen-Cheng Chen , David Dyk , Guangyao Jia , Mauricio Jochinsen , Omeed Paydar , Satish Yalamanchili
IPC: A61F9/007
Abstract: An ultrasonic cutting tip has a hollow shaft with a proximal and distal end. The proximal end is configured to be attached to an ultrasonic hand piece, and the distal end has a smooth continuous surface. An opening is located near the distal end of the hollow shaft. The opening is configured to cut vitreous when the cutting tip is vibrated ultrasonically in a torsional manner.
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Patent Agency Ranking
公开(公告)号：US20250041116A1
公开(公告)日：2025-02-06
申请号：US18782278
申请日：2024-07-24
Applicant: Alcon Inc.
Inventor： Guangyao Jia , Ho Man Michael Fong , Kurt D. Leukanech , Collin Shane Wasson , Satish Yalamanchili
Abstract: Embodiments of the present disclosure generally relate to systems and methods for measuring intraocular pressure (IOP) during ophthalmic surgery. In some embodiments, a method for measuring IOP is provided. The method includes measuring fluid pressure in a fluid flow path of a handpiece device using a pressure sensor disposed therein to obtain a fluid pressure measurement, determining a sensor temperature measurement of the pressure sensor, determining a predicted sensor zero offset based on the sensor temperature measurement using a determined zero offset correlation function, and adjusting the fluid pressure measurement with the predicted sensor zero offset to obtain an adjusted fluid pressure measurement.
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公开(公告)号：US20220331507A1
公开(公告)日：2022-10-20
申请号：US17658834
申请日：2022-04-12
Applicant: Alcon Inc.
Inventor： Vincent A. Baxter , David Dyk , Satish Yalamanchili , Guangyao Jia , Yen-Cheng Chen
Abstract: A surgical cassette for an ophthalmic surgical system includes an irrigation system, an aspiration system, and a computer. The irrigation system is in fluid communication with a handpiece and carries fluid toward a surgical site. The aspiration system is in fluid communication with the handpiece via an aspiration conduit and carries fluid away from the surgical site. The computer instructs the aspiration system to vibrate fluid back and forth within the aspiration conduit to perform a priming procedure.
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公开(公告)号：US20250046442A1
公开(公告)日：2025-02-06
申请号：US18780763
申请日：2024-07-23
Applicant: Alcon Inc.
Inventor： Guangyao Jia , Kurt D. Leukanech , Satish Yalamanchili
Abstract: A controller for an ultrasonic handpiece having a load in the form of at least one piezoelectric drive crystal includes a processor and a computer-readable storage memory on which is recorded a computer-readable instruction set. Execution of the instruction set during real-time operation of the handpiece causes the processor to perform an associated method, during which the processor calculates a load capacitance of the load and a dissipation factor of the load capacitance. The processor also records the load capacitance and dissipation factor in memory over time as a recorded capacitance history. The processor then executes a control action of the handpiece using the recorded capacitance history and possibly one or more additional recorded electrical parameters such as estimated resistance, estimated inductance, and/or measured temperature, or correlations of the same with resonant frequency over time.
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公开(公告)号：US11878105B2
公开(公告)日：2024-01-23
申请号：US17393437
申请日：2021-08-04
Applicant: Alcon Inc.
Inventor： Vincent A Baxter , David Dyk , Satish Yalamanchili , Raphael Gordon
CPC classification number: A61M1/774 , A61F9/00745 , A61M2205/3331 , A61M2210/0612
Abstract: According to certain embodiments, a surgical cassette for an ophthalmic surgical system comprises an irrigation conduit that is in fluid communication with a handpiece and carries fluid toward a surgical site. An aspiration conduit is in fluid communication with the handpiece and carries fluid away from the surgical site. An aspiration pump creates a vacuum pressure in the aspiration conduit to draw fluid through the aspiration conduit towards a drain reservoir. A reservoir couples with a pressure-vacuum source to manage the reservoir pressure. A valve is in fluid communication with the aspiration conduit and the reservoir, and provides one or more channels between the aspiration conduit and the reservoir. Each sensor detects a pressure associated with the surgical site. A computer controls the valve in response to the pressure detected by the one or more pressure sensors to mitigate a pressure or volume change.
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公开(公告)号：US20230270591A1
公开(公告)日：2023-08-31
申请号：US18173864
申请日：2023-02-24
Applicant: Alcon Inc.
Inventor： James Y. Chon , Ahmad Salehi , Kurt D. Leukanech , Satish Yalamanchili , Dan Teodorescu , Ho Man Michael Fong
IPC: A61F9/007
CPC classification number: A61F9/00745 , A61B2017/00402
Abstract: An ultrasonic handpiece includes a piezoelectric element assembly. Control signals drive the piezoelectric element assembly simultaneously in a first mode of oscillation and a second mode of oscillation. Feedback of a resulting oscillation of the piezoelectric element assembly in the first mode and the second mode is generated. Based on the feedback, the frequency of each of the first mode and second mode is independently adjusted, as needed, so that the resulting oscillation of each of the first mode and the second mode is each approximately at its respective resonant frequency.
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