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公开(公告)号：US11633534B2
公开(公告)日：2023-04-25
申请号：US16996083
申请日：2020-08-18
摘要： An injection system is described that receives, from one or more sensors, a first group of one or more signals indicating a current volume of injection fluid dispensed from a fluid reservoir at a first time. The injection system determines, based on the first group of one or more signals, that a difference between a dispensed volume limit and the current volume of the injection fluid dispensed from the fluid reservoir at the first time is less than a necessary volume of fluid required to complete both a systolic injection phase and a diastolic injection phase. The injection system further, responsive to determining that the difference is less than the necessary volume of fluid required to complete both the systolic injection phase and the diastolic injection phase, controls the injection system to refrain from performing each of the systolic injection phase and the diastolic injection phase.
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公开(公告)号：US20220339356A1
公开(公告)日：2022-10-27
申请号：US17851125
申请日：2022-06-28
发明人： Blaise D. Porter
摘要： Methods and systems may quantify how much contrast fluid is injected into a patient by a powered fluid injector. A controller of the powered fluid injector can receive a command from a user to begin dispensing contrast fluid. The controller may determine whether a hemodynamic pressure signal is present from a pressure sensor in fluidic connection with the vasculature of the patient. The powered fluid injector may dispense a quantity of contrast fluid in response to the command. The controller may add the quantity of contrast fluid to an injection quantity if the hemodynamic pressure signal is present just prior to and/or just after the quantity of contrast fluid is dispensed. The controller may refrain from adding the quantity of contrast fluid to the injection quantity if the hemodynamic pressure signal is not present just prior to and/or just after the quantity of contrast fluid is dispensed.
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公开(公告)号：US11478217B2
公开(公告)日：2022-10-25
申请号：US16235153
申请日：2018-12-28
发明人： Richard A. Bautista , David Johnson , Isaac Kim
摘要： A catheter extension can include an extension body with a sheath defining a lumen, a cable extending within the lumen, a proximal connector attached to the sheath and configured to couple to a catheter drive mechanism, and a distal connector attached to the sheath and configured to couple to a catheter. An axial biasing member can be coupled to the cable and integrated into either the proximal or distal connector and configured to exert a force on the cable in a first axial direction and permit movement of the cable in a second axial direction. An axial key can be coupled to the cable and integrated into the connector opposite the axial biasing member. The axial key can include a tab attached to the cable and a slot with an inner profile that complements a tab outer profile that can permit the tab to move in within the slot.
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公开(公告)号：US11478162B2
公开(公告)日：2022-10-25
申请号：US16420353
申请日：2019-05-23
发明人： Robert F. Wilson , Todd Suchecki , Thomas M. Snyder , Alan Evans , Bryan Brutlag
IPC分类号： A61B5/0275 , G06T7/246 , G06T7/00 , G06V10/75
摘要： Embodiments for assessing flow at an anatomical region of interest are disclosed. One embodiment uses pulsed contrast media injections at a known frequency along with corresponding image data to derive a measurement of blood flow velocity at the region of interest. Another embodiment uses incremental changes in known contrast media injection flow rates to match the blood flow rate relative to one of these known contrast media injection flow rates based on the presence of a particular indicia in image data. For example, this indicia can be the flow of contrast media out from a coronary artery back into the aorta or the onset of a steady state pixel density. A further embodiment uses contrast media injections that are synchronized with the cardiac cycle. For example, contrast media injections can be synchronized with the diastolic and/or systolic phases and used to measure blood flow accordingly.
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公开(公告)号：US20220054735A1
公开(公告)日：2022-02-24
申请号：US16996083
申请日：2020-08-18
摘要： An injection system is described that receives, from one or more sensors, a first group of one or more signals indicating a current volume of injection fluid dispensed from a fluid reservoir at a first time. The injection system determines, based on the first group of one or more signals, that a difference between a dispensed volume limit and the current volume of the injection fluid dispensed from the fluid reservoir at the first time is less than a necessary volume of fluid required to complete both a systolic injection phase and a diastolic injection phase. The injection system further, responsive to determining that the difference is less than the necessary volume of fluid required to complete both the systolic injection phase and the diastolic injection phase, controls the injection system to refrain from performing each of the systolic injection phase and the diastolic injection phase.
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公开(公告)号：US11191890B2
公开(公告)日：2021-12-07
申请号：US17260632
申请日：2019-07-15
发明人： Pierre-Yves Chassot , Jens Warming
摘要： An injection system is proposed which comprises at least one supply station for supplying a medical fluid to be injected into a patient's vasculature, a pressurizing unit comprising a motor for pressurizing said medical fluid, a delivery arrangement in fluid communication with the at least one supply station and a patient set assembly in fluid communication with the delivery arrangement. The patient set assembly comprises a delivery tube for delivering the pressurized fluid to the patient and a peristaltic pump component comprising a casing which includes an inlet port and an exit port, the inlet port being in fluid communication with the delivery arrangement and the exit port being in fluid communication with the delivery tube. According to an embodiment of the present invention, in proximity of the inlet port, the casing of the peristaltic pump component has a substantially U-shaped configuration. The present invention also relates to a patient set assembly and to a peristaltic pump component.
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公开(公告)号：US11083842B2
公开(公告)日：2021-08-10
申请号：US16076584
申请日：2017-02-08
发明人： Pierre Yves Chassot
摘要： A solution is proposed for operating an injection system comprising a pressurizing unit and at least one supply station for supplying a medical fluid to the pressurizing unit, the supply station comprising at least one receptacle for containing said medical fluid, a delivery arrangement in fluid communication with the receptacle and the pressurizing unit for delivering the medical fluid to a patient, and clamping means associated with the delivery arrangement for regulating the flow of the medical fluid through the delivery arrangement. The method comprises the steps of: operating the pressurizing unit till a first injection procedure is completed; maintaining the injection system in a standby condition before a second injection procedure is started, and operating the pressurizing unit till the second injection procedure is completed. The step of maintaining the injection system in a standby condition comprises the step of acting on the clamping means for de-clamping the delivery arrangement.
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公开(公告)号：US11033678B2
公开(公告)日：2021-06-15
申请号：US16194986
申请日：2018-11-19
发明人： Judson A. Herrig
摘要： In one embodiment, an injector includes a sleeve, a drive assembly, and a drive assembly housing. The sleeve is configured to receive a reservoir having a plunger therein. The drive assembly is configured to pressurize the reservoir and includes a tip, an actuator, and mechanical segments. The tip is configured to be secured to the plunger. The actuator is configured to supply a motive force to the tip for moving it between retracted and extended positions. The mechanical segments are configured to transmit motive force from the actuator to the tip. The drive assembly housing has a housing length in a direction parallel to a central longitudinal axis of the tip. The reservoir has a reservoir length L. A package length is defined by the housing length and the reservoir length L. The package length is less than 2L.
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公开(公告)号：US10987086B2
公开(公告)日：2021-04-27
申请号：US15725564
申请日：2017-10-05
IPC分类号： A61B8/00 , G06T7/00 , G06T7/30 , A61B8/12 , G01S7/52 , A61B8/08 , G01S15/10 , G01S15/89 , A61B5/06
摘要： An intravascular ultrasound imaging system comprises a catheter having an elongated body having a distal end and an imaging core arranged to be inserted into the elongated body. The imaging core is arranged to transmit ultrasonic energy pulses and to receive reflected ultrasonic energy pulses. The system further includes an imaging engine coupled to the imaging core and arranged to provide the imaging core with energy pulses to cause the imaging core to transmit the ultrasonic energy pulses. The energy pulses are arranged in repeated sequences and the energy pulses of each sequence have varying characteristics. The reflected pulses may be processed to provide a composite image of images resulting from each different characteristic.
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公开(公告)号：US10980426B2
公开(公告)日：2021-04-20
申请号：US16166472
申请日：2018-10-22
IPC分类号： A61B5/00 , A61B5/02 , A61B5/0215 , A61M25/00 , A61B5/1455 , A61B5/0205 , A61B5/026 , A61M25/09 , A61M5/00 , A61B5/01 , A61B5/145 , A61M25/01 , A61B6/00
摘要： An intravascular sensor delivery device for measuring a physiological parameter of a patient, such as blood pressure, within a vascular structure or passage. In some embodiments, the device can be used to measure the pressure gradient across a stenotic lesion or heart valve. The sensor delivery device can be sized to pass over different sizes of guidewires to enable usage in coronary and peripheral arteries, for example.
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