摘要:
A fetus delivery assisting device (10)for assisting with the birth of a fetus. The device (10) comprises a shaft (16). At one end of the shaft (16) is a rigid base (18) to which an inflatable balloon (12) is mounted. The rigid base (18) and the inflatable balloon (12) are configured to accept a fetal head. The inflatable balloon (12) is configured to displace the fetal head from a pelvic cavity when inflated. The shaft (16) is configured for manipulating the inflatable balloon (12) to displace the fetal head from the pelvic cavity.
摘要:
Catheter apparatuses and methods are provided for repairing heart valves, particularly mitral valves. The method includes providing a catheter having an elongate, flexible body, with a proximal end and a distal end. The distal end can be transluminally advanced from the left atrium through the mitral valve. A distal anchor zone or portion coupled with the proximal end can extend and along the left ventricular outflow tract into the ascending aorta. A valve repair device is deployed to permanently connect leaflets at a mid-section of a mitral valve while permitting medial and lateral portions of the natural leaflets to open and close. The catheter apparatuses may be positionable using a steering device. The valve repair device detachably connects the distal and proximal ends of the catheter. The valve repair device can be detached using low profile devices actuatable from the proximal or distal ends, e.g., at a venous or arterial access site.
摘要:
A combination radial arm band and hemostatic material preferably including potassium ferrate and a cation ion exchange resin in powder or granular form (WOUNDSEAL) or formed into a solid tablet (STATSEAL) and having improved topical effectiveness in the arresting of blood flow from a puncture wound into the radial artery made during transradial diagnostic or interventional catheterization procedures. The combination reduces time and pressure needed to achieve hemostasis and decreases arterial damage as compared to use of a radial arm band alone. In one aspect of this disclosure, careful limitation of applied force and time of applied force against the STATSEAL tablet reduces likelihood of harm to the radial artery while minimizing time to achieve hemostasis.
摘要:
A delivery device (10) for a collapsible prosthetic heart valve may include an operating handle (20) and a catheter assembly (16). The handle may include a housing (30), a piston cylinder (41, 42), a piston (36) longitudinally slidable within the piston cylinder, the piston and the piston cylinder together defining at least one pressure chamber (43, 44), a deployment actuator (21) coupled to the housing and rotatable relative thereto, and a pneumatic switch (90) adapted to provide a pressurized fluid to the pressure chamber to apply a longitudinal force to the piston. The catheter assembly may include a first shaft (19) around which a valve-receiving compartment (23) is defined, the first shaft being operatively connected to the housing, and a distal sheath (24) operatively connected to the piston, the distal sheath being moveable between a closed condition covering the compartment and an open condition uncovering the compartment. Longitudinal movement of the piston may move the distal sheath between the closed and open conditions.
摘要:
An apparatus for treating uterine disorders by effecting necrosis of the uterine endometrium. The apparatus comprises a catheter with a bladder which can be inflated with a hot medium. To prevent inflation of the bladder during heating of the medium, and therefore to prevent too early inflation, the apparatus operates the inflation means in the negative direction during heating of the inflation medium.
摘要:
A vitrectomy apparatus (300) is provided, including a pressure source (310), a cut valve (316) connected to the pressure source, the cut valve configured to be turned on and off to provide pressure to selectively extend and retract a vitrectomy cutting device, a sensor (315) configured to sense pressure provided from the cut valve, and a controller (320) configured to control operation of the cut valve based on pressure sensed by the sensor. The controller is configured to monitor an amount of dwell time the vitrectomy cutting device remains open and monitor aspiration rate, and control a rate of material processed by the vitrectomy cutting device based on amount of dwell time and aspiration rate.
摘要:
Es werden Verfahren zur Steuerung und / oder Regelung einer mit Druckgas betreibbaren medizinischen, insbesondere dentalen, Antriebsvorrichtung (1) und eine Steuer- und / oder Regelvorrichtung (5) zur Durchführung derartiger Verfahren beschrieben. Bei einem Verfahren gemäß einem ersten Ausführungsbeispiel wird ein Laufrad (2) der Antriebsvorrichtung (1) durch Stellen des Gasdrucks und / oder des Durchflusses des Druckgases durch ein Ventil (4) mit einer im Wesentlichen konstanten Drehzahl (n 1 ) betrieben und bei Erreichen eines Druckwertes (p 2 ) des Druckgases, der geringer ist als der maximale Gasdruck (p max ) des Druckgases, die Drehzahl reduziert. Bei einem Verfahren gemäß einem zweiten Ausführungsbeispiel werden bei Erreichen eines Drehzahlgrenzwertes (n 2 , n 3 ) des Laufrads (2) durch Stellen des Ventils (4) der Gasdruck des Druckgases und die Drehzahl des Laufrads (2) verändert.
摘要:
Hydraulic vitrectomy probes and methods and systems associated therewith are discussed. Example hydraulic vitrectomy probes may include a pressure multiplier that is operable to output a hydraulic pressure at a multiple of a received pneumatic pressure. Because of the incompressible nature of liquid, hydraulic vitrectomy probes are, among other things, more responsive, may be operated at higher cutting rates, provide improved patient safety, and have a form factor (e.g., size and/or shape) that may be more easily maneuvered by a surgeon.
摘要:
Various embodiments of the present disclosure include a tool for stabilizing a fractured bone. The tool comprises a barrel having a proximal end and a distal end. The distal end of the barrel includes a passageway for receiving a bone pin configured to be driven into the fractured bone to stabilize the fractured bone. The passageway is sized to accommodate axial movement of the bone pin through the passageway while limiting radial movement of the bone pin in the passageway. The tool further comprises a piston having a proximal end and a distal end and configured to translate axially relative to the barrel. The proximal end of the piston includes a head and the distal end of the piston includes a needle formation, the needle formation being sized for receipt within the passageway of the barrel to drive the bone pin axially from the barrel and into the fractured bone.