Abstract: A method for infusing a liquid into a patient's vasculature in accordance with an infusion protocol is disclosed. For this method, an infusion catheter having a multi-lumen infusion unit that is mounted adjacent the catheter's distal end is positioned in an artery within a predetermined distance from an intended target tissue surface. An inflation balloon is then deployed to at least partially occlude the artery and a force is exerted on the liquid to establish a flow rate for the liquid in the catheter. Specifically, the force is exerted to infuse the liquid from the catheter through the infusion unit and into the vasculature with a homogeneous distribution of the liquid to cover the intended surface of the target tissue. The flow rate can be established in accordance with an infusion protocol that is characterized by time and liquid volume parameters based on viscosity and pressure values in the liquid.

Abstract: A method for infusing a liquid into a patient's vasculature in accordance with an infusion protocol is disclosed. For this method, an infusion catheter having a multi-lumen infusion unit that is mounted adjacent the catheter's distal end is positioned in an artery within a predetermined distance from an intended target tissue surface. An inflation balloon is then deployed to at least partially occlude the artery and a force is exerted on the liquid to establish a flow rate for the liquid in the catheter. Specifically, the force is exerted to infuse the liquid from the catheter through the infusion unit and into the vasculature with a homogeneous distribution of the liquid to cover the intended surface of the target tissue. The flow rate can be established in accordance with an infusion protocol that is characterized by time and liquid volume parameters based on viscosity and pressure values in the liquid.

Abstract: One embodiment pertains to a method including transitioning a logic state of at least one enable signal. A first power transistor begins to turn off. A parameter level of the input of the first power transistor is directly sensed. A second power transistor is turned off when the parameter level is less than a threshold level.

Abstract: A method for infusing a liquid into a patient's vasculature in accordance with an infusion protocol is disclosed. For this method, an infusion catheter having a multi-lumen infusion unit that is mounted adjacent the catheter's distal end is positioned in an artery within a predetermined distance from an intended target tissue surface. An inflation balloon is then deployed to at least partially occlude the artery and a force is exerted on the liquid to establish a flow rate for the liquid in the catheter. Specifically, the force is exerted to infuse the liquid from the catheter through the infusion unit and into the vasculature with a homogeneous distribution of the liquid to cover the intended surface of the target tissue. The flow rate can be established in accordance with an infusion protocol that is characterized by time and liquid volume parameters based on viscosity and pressure values in the liquid.

Abstract: A method for infusing a liquid into a patient's vasculature in accordance with an infusion protocol is disclosed. For this method, an infusion catheter having a multi-lumen infusion unit that is mounted adjacent the catheter's distal end is positioned in an artery within a predetermined distance from an intended target tissue surface. An inflation balloon is then deployed to at least partially occlude the artery and a force is exerted on the liquid to establish a flow rate for the liquid in the catheter. Specifically, the force is exerted to infuse the liquid from the catheter through the infusion unit and into the vasculature with a homogeneous distribution of the liquid to cover the intended surface of the target tissue. The flow rate can be established in accordance with an infusion protocol that is characterized by time and liquid volume parameters based on viscosity and pressure values in the liquid.

Abstract: A system for moving particles suspended in a first fluid, and for infusing them into the stream of a second fluid, includes a catheter with a multi-lumen distal separator. The separator is formed with a plurality of parallel lumens, wherein each lumen has a predetermined diameter to reduce particle flocculation. An inflatable balloon, affixed to the outside of the catheter, can be provided to regulate flow of the second fluid and thereby facilitate entry of the particles into the stream of the second fluid. A reinforcing member is employed to strengthen the catheter wall under the inflatable balloon. With this arrangement, the catheter does not kink or collapse due to the pressure exerted on the catheter wall when the balloon is inflated. In one embodiment, the reinforcing member includes an annular shaped ring. In another embodiment, the separator is positioned under the balloon and acts as the reinforcing member.

Abstract: One embodiment pertains to a method including transitioning a logic state of at least one enable signal. A first power transistor begins to turn off. A parameter level of the input of the first power transistor is directly sensed. A second power transistor is turned off when the parameter level is less than a threshold level.

Abstract: One embodiment pertains to a method including transitioning a logic state of at least one enable signal. A first power transistor begins to turn off. A parameter level of the input of the first power transistor is directly sensed. A second power transistor is turned off when the parameter level is less than a threshold level.

Abstract: One embodiment pertains to a method including transitioning a logic state of at least one enable signal. A first power transistor begins to turn off. A parameter level of the input of the first power transistor is directly sensed. A second power transistor is turned off when the parameter level is less than a threshold level.

Abstract: A method for infusing a liquid into a patient's vasculature in accordance with an infusion protocol is disclosed. For this method, an infusion catheter having a multi-lumen infusion unit that is mounted adjacent the catheter's distal end is positioned in an artery within a predetermined distance from an intended target tissue surface. An inflation balloon is then deployed to at least partially occlude the artery and a force is exerted on the liquid to establish a flow rate for the liquid in the catheter. Specifically, the force is exerted to infuse the liquid from the catheter through the infusion unit and into the vasculature with a homogeneous distribution of the liquid to cover the intended surface of the target tissue. The flow rate can be established in accordance with an infusion protocol that is characterized by time and liquid volume parameters based on viscosity and pressure values in the liquid.

Abstract: A system for moving particles suspended in a first fluid, and for infusing them into the stream of a second fluid, includes a catheter with a multi-lumen distal separator. The separator is formed with a plurality of parallel lumens, wherein each lumen has a predetermined diameter to reduce particle flocculation. An inflatable balloon, affixed to the outside of the catheter, can be provided to regulate flow of the second fluid and thereby facilitate entry of the particles into the stream of the second fluid. A reinforcing member is employed to strengthen the catheter wall under the inflatable balloon. With this arrangement, the catheter does not kink or collapse due to the pressure exerted on the catheter wall when the balloon is inflated. In one embodiment, the reinforcing member includes an annular shaped ring. In another embodiment, the separator is positioned under the balloon and acts as the reinforcing member.

Abstract: A technique for increasing the charge storage capacity of a charge storage device without changing its inherent charge transfer function. The technique may be used to implement a charge domain signal processing circuits such as Analog to Digital Converters (ADCs) used in digital radio frequency signal receivers.

Abstract: A technique for increasing the charge storage capacity of a charge storage device without changing its inherent charge transfer function. The technique may be used to implement a charge domain signal processing circuits such as Analog to Digital Converters (ADCs) used in digital radio frequency signal receivers.

Abstract: A technique for increasing the charge storage capacity of a charge storage device without changing its inherent charge transfer function. The technique may be used to implement a charge domain signal processing circuits such as Analog to Digital Converters (ADCs) used in digital radio frequency signal receivers.

Abstract: A technique for increasing the charge storage capacity of a charge storage device without changing its inherent charge transfer function. The technique may be used to implement a charge domain signal processing circuits such as Analog to Digital Converters (ADCs) used in digital radio frequency signal receivers.

Abstract: The present invention relates to a transmyocardial implant placement device with an introducer, a transmyocardial implant mounted about the introducer, a wound closure clip engaged to the introducer adjacent the transmyocardial implant. The introducer is adapted to be inserted through a lumen of a coronary vessel and a myocardium of a patient into a chamber of the patient's heart and form a blood flow pathway through the myocardium between the heart chamber and the coronary vessel. When the introducer is inserted, the wound closure clip engages an outer wall of the coronary vessel and the transmyocardial implant extends from the heart chamber to the lumen of the coronary vessel. The transmyocardial implant is expanded in the blood flow pathway and the introducer retracted, leaving the transmyocardial implant in the within the blood flow pathway.

Abstract: A charge splitter for separating an incoming charge packet into two outgoing packets while the charge is in a static state, i.e., not while it is flowing down a channel or over a barrier. A splitting gate may have a biasing charge impressed upon it, such as via the application of voltage or current sources to opposite ends thereof, applying a bias to a semiconductor body portion of the gate structure, or by physically separate the splitting gate into multiple sections that each have different applied voltages or currents When discharge barrier gates are operated, different amounts of charge will thus flow to different output storage gates.

Abstract: A technique for forming Charge-Coupled Devices (CCDS) in a conventional Complementary Metal Oxide Semiconductor (CMOS) process. A number of single-layer polysilicon gates are formed on an as-grown, native doped silicon substrate, with gaps between them. Masking is used to selectively dope the gates while preventing doping of the silicon in the gaps. Masking may likewise be used to selectively silicide the gates while preventing silicide formation in the gaps. Conventional source-drain processing produces input/output diffusions for the CCD.

Abstract: A technique for forming Charge-Coupled Devices (CCDs) in a conventional Complementary Metal Oxide Semiconductor (CMOS) process. A number of single-layer polysilicon gates are formed on an as-grown, native doped silicon substrate, with gaps between them. Masking is used to selectively dope the gates while preventing doping of the silicon in the gaps. Masking may likewise be used to selectively silicide the gates while preventing silicide formation in the gaps. Conventional source-drain processing produces input/output diffusions for the CCD.

Abstract: A charge splitter for separating an incoming charge packet into two outgoing packets while the charge is in a static state, i.e., not while it is flowing down a channel or over a barrier. A splitting gate may have a biasing charge impressed upon it, such as via the application of voltage or current sources to opposite ends thereof, applying a bias to a semiconductor body portion of the gate structure, or by physically separate the splitting gate into multiple sections that each have different applied voltages or currents When discharge barrier gates are operated, different amounts of charge will thus flow to different output storage gates.