摘要:
An ultrasonic core including a longitudinally elongated, generally planar waveguide defining an aperture extending from a first side of the waveguide toward a medial plane of the waveguide, and having a transducer element sized and shaped so as to substantially conform to the size and shape of the aperture and to be at least partially embedded within the waveguide. In other aspects, an ultrasonic core including a longitudinally elongated, generally planar silicon waveguide having at least one transducer element secured thereto and a wedge-shaped acoustic horn including an inclined side surface, characterized in that the inclined side surface is oriented along the {1,1,1} crystallographic plane of the silicon material. Also, methods of manufacturing the respective ultrasonic cores and ultrasonic handpieces for an ultrasonic surgical instruments incorporating such cores.
摘要:
Devices and related methods are provided for the controlled delivery of a therapeutic to a targeted location within a body. More particularly, methods and devices are provided for controlling the rate of passage of an orally administered pill through a body, as well as for controlling the delivery of a therapeutic within the pill at a specific location within the body. Various types of devices, generally referred to herein as “catchers,” are provided that can actively catch a pill as it passes through a body. The catcher can hold the pill at a specific location within the body until a predetermined event occurs, such as partial or complete administration of a therapeutic within the pill. The catcher can then release the pill upon command and/or upon the occurrence of the predetermined event to allow the pill to pass out of the body. In other embodiments, various types of pills are provided that can actively engage a catcher and remain engaged with the catcher until a predetermined event occurs.
摘要:
An implantable system for stimulating the release of satiety hormone in a subject comprises a stimulus device which is implantable in the subject and adapted to apply an electrical stimulus to a tissue of a gastrointestinal system of said subject, and a detection device which is implantable in the subject and adapted to continuously monitoring at least one of a mechanical characteristic and an electrical characteristic of the subject to detect an ingestion of food by said subject, wherein the detection device cooperates with the stimulus device such that the stimulus device applies said electrical stimulus in response to a detected ingestion of food.
摘要:
An implantable system for stimulating the release of satiety hormone in a subject comprises a stimulus device (11) which is implantable in the subject and adapted to apply an electrical stimulus to a tissue of a gastrointestinal system of said subject, and a detection device which is implantable in the subject and adapted to continuously monitoring at least one of a mechanical characteristic and an electrical characteristic of the subject to detect an ingestion of food by said subject, wherein the detection device cooperates with the stimulus device (11) such that the stimulus device (11) applies said electrical stimulus in response to a detected ingestion of food.
摘要:
A thermal flow sensor has a first substrate, second substrate and a third substrate, each of which has a first side and a second opposite side. The first substrate is connected to the second substrate such that the second side of the first substrate abuts the first side of the second substrate. The third substrate is connected to the second substrate such that the second side of the second substrate abuts the first side of the third substrate. The second substrate has a groove formed therein so as to form a conduit bounded by the second substrate and the second side of the first substrate and the first side of the third substrate. A heater is disposed on the first side of the first substrate opposed to the conduit. A first temperature sensor is disposed on the first side of the first substrate opposed to the conduit.
摘要:
A pressure sensor having a substrate and a first, deformable membrane, partially supported by the substrate, which generates a first sensor reading when deformed by pressure. A second membrane is contiguous to the first membrane. When the second membrane is energized, it deforms the first membrane to alter the first sensor reading.
摘要:
A pressure sensor having a substrate and a first, deformable membrane, partially supported by the substrate, which generates a first sensor reading when deformed by pressure. A second membrane is contiguous to the first membrane. When the second membrane is energized, it deforms the first membrane to alter the first sensor reading.
摘要:
A thermal flow sensor has a first substrate, second substrate and a third substrate, each of which has a first side and a second opposite side. The first substrate is connected to the second substrate such that the second side of the first substrate abuts the first side of the second substrate. The third substrate is connected to the second substrate such that the second side of the second substrate abuts the first side of the third substrate. The second substrate has a groove formed therein so as to form a conduit bounded by the second substrate and the second side of the first substrate and the first side of the third substrate. A heater is disposed on the first side of the first substrate opposed to the conduit. A first temperature sensor is disposed on the first side of the first substrate opposed to the conduit.
摘要:
An erosion-resistant capillary chip for use with in an infusion pump that is made from a silicon substrate having a first surface that includes a micro groove etched therein and a glass plate laminated to the first surface. The glass plate covers the micro groove so that a micro fluid conduit is created. The glass plate includes an inlet bore that connects with the micro fluid conduit and the silicon substrate includes an outlet bore that connects with the micro fluid conduit so that a drug solution entering the inlet bore from the infusion pump may pass through the micro fluid conduit at a restricted flow rate to the outlet bore and thereafter to a target site of a patient. The micro groove includes a passivation layer made from silicon nitride or silicon carbide that protects the micro groove against erosion from passing fluids having high basic or high acidic pH levels. A method for making the capillary chip is disclosed, as well as an infusion pump incorporating the improved capillary chip.
摘要:
An apparatus for regulating the functioning of a patient's organ or duct includes an elongated member having a first end and a second end. A fastener is disposed on the first end of the elongated member. The fastener is configured to engage the second end of the elongated member so that the elongated member forms a loop around the organ or duct. A tension element is disposed for movement within the elongated member. A symmetrical drive system including a drive element associated with and engaging the tension element for causing the tension element to control the tension applied by the elongated member against a patient's body organ or duct is further provided. In accordance with an alternate embodiment an apparatus for regulating the functioning of a patient's organ or duct including an elongated member having a first end and a second end. A fastener is disposed on the first end of the elongated member. The fastener is configured to engage the second end of the elongated member so that the elongated member forms a loop around the organ or duct. A tension element is disposed for movement within the elongated member. The tension element is composed of a flexible first member and a flexible second member, wherein the flexible first member is movable relative to the flexible second member. A drive element is associated with and engages the tension element for causing the tension element to control the tension applied by the elongated member against a patient's body organ or duct.