Abstract: A well pump includes a plunger reciprocally carried within a barrel between up stroke and down stroke positions. A tubular linear actuator housing located below the barrel has a rotatable rotor. An array of rotor magnets is mounted to the rotor, directing rotor magnetic fields in an outward direction. A cage is fixed against rotation relative to the housing and carried within the housing for axial movement relative to the rotor and the housing. The cage has a cylindrical inner sidewall surrounding the outer sidewall of the rotor. An array of cage magnets is mounted to the inner sidewall of the cage. The cage magnets direct cage magnetic fields in an inward direction relative to the axis. The cage and rotor magnetic fields interact such rotation of the rotor causes axial movement of the cage. A motor rotates the rotor.

Abstract: A diaphragm pump comprising a housing for receiving and securely holding a motor, the housing comprising an elongate portion having a closed end and an open end, the elongate portion being adapted to securely receive and house a motor; and a collar portion being provided at the open end of the elongate portion; a cover for the housing, the cover being adapted to engage with the housing; a diaphragm plate extending across the open end of the housing between the collar portion of the housing and the cover and being secured therebetween when the cover is engaged with the collar portion of the housing. The diaphragm pump also includes a wobble plate positioned within the collar portion of the housing.

Abstract: A pump includes a pump chamber in which a rotor with gates is supported so that it can rotate, an electric motor for driving the rotor, an outlet, and an inlet port that is fastened to a mounting plate and is in active connection with an inlet channel. The pump should be improved so that its service life and reliability are improved with minimal installation complexity in a vehicle, wherein intense cleaning of lines and devices connected on the suction side can be eliminated. This is achieved in that a filter is arranged in the area of the inlet channel between the mounting plate and the pump chamber.

Abstract: A cylinder-piston unit of a needle-free injector, with at least one cylinder accommodating an injection solution, at least one piston, and an adhesive coating arranged in the area of the free end face of the cylinder. The cylinder has a bottom portion, on which a discharge tube is arranged. An adhesive disc, which is displaceable in the direction of the center line of the cylinder-piston unit between an installation position and an application position, is arranged on the discharge tube and/or on the bottom portion. The adhesive disc has an adhesive coating on each of the two end faces. In the installation position, the discharge tube can be sealed off in the adhesive disc. In the application position, the front edge of the discharge nozzle lies in the plane of the front adhesive coating or protrudes beyond this plane by at least 0.5 mm.

Abstract: An apparatus includes a monolithically-constructed transmission member that defines a lumen along a longitudinal axis. The transmission member includes a first portion, a second portion, and a third portion. The first portion is configured to be coupled to an ultrasonic energy source. The second portion is configured to contact a bodily tissue to transfer ultrasonic energy from a first portion into the bodily tissue. The third portion is disposed between the first portion and the second portion and defines a cross-sectional moment of inertia that is less than at least one of a cross-sectional area moment of inertia of the first portion or a cross-sectional moment of inertia of the second portion.

Abstract: Described is a syringe carrier comprising a body adapted to receive a barrel of a syringe. The body includes a longitudinal slot and a distal end having resilient distal clamps with shoulder sections. The shoulder sections are adapted to engage a circumferential gap between the barrel of the syringe and a needle shield covering a needle of the syringe.

Abstract: According to preferred embodiments and methods of the present disclosure, a medical injection system employs a single pump for the injection of multiple fluids, rather than employing a pump for each type of fluid, for example, like the prior art system described above. Embodiments of pumps disclosed herein preferably include a disposable pump cartridge configured to be contained within a hull of a medical injection system, wherein the hull may be formed when a pressure plate member is closed against a base plate; and, when the pressure plate member is opened with respect to the base plate, the disposable pump cartridge may be removed and replaced.

Abstract: A user-initiated fluid pathway connection includes: a connection hub, a piercing member, a sterile sleeve, and a drug container having a cap, a pierceable seal, a barrel, and a plunger seal, wherein the piercing member is initially retained within the sterile sleeve between the connection hub and the pierceable seal of the drug container. The connection hub may include an internal aperture within the connection hub which functions as a flow restrictor and wherein a piercing member is connected to one end of the internal aperture and a fluid conduit is connected to another end of the internal aperture. A drug delivery pump with integrated sterility maintenance features includes a housing, upon which an activation mechanism, an insertion mechanism, a fluid pathway connection as described above, a power and control system, and a drive mechanism connected to a drug container are mounted. Methods of assembly and operation are also provided.

Abstract: An indwelling assembly includes an inner needle having a sharp needlepoint, an inner needle hub fixed to the inner needle, a hollow elongated outer member in which the inner needle is positioned and movable in a distal direction relative to the inner needle after puncturing the blood vessel to position the elongated outer member at a desired position in the blood vessel, an outer member hub fixed to hollow elongated outer member, a projection removably connected to the outer member hub and configured to be engaged by a finger of the user to apply a force to the projection causing the outer member hub and the hollow elongated outer member to move together with the projection in the distal direction relative to the inner needle and the inner needle hub, and an elongated movable member that is movable relative to the hollow elongated outer member and the outer member hub.

Abstract: In the joint mechanism, when connecting a plunger to a piston, after engaging members of a plunger-side engaging region in a retracted state pass through a first engaging wall region of a piston-side engaging region, the engaging members of the plunger-side engaging region come into a projected state in a second engaging wall region and the projected state of the engaging members is fastened by a fast block, and thereby, the plunger-side engaging region engages with the piston-side engaging region.

Abstract: A needleless connector has a body having an internal cavity with a sealing ridge, a port, an output flow channel, and a fluid flow path between the port and output flow channel. The connector also has a collapsible valve disposed within the cavity. The valve includes a cylindrical wall having a center axis, an internal surface, and a shoulder configured to sealingly contact the ridge of the body, thereby blocking the fluid flow path. The valve also includes a head fixedly attached to the wall. The head has a smiley cut at a first angular position about the center axis and a continuous top surface that is generally perpendicular to the axis. The valve also includes a first dimple formed in the internal surface of the cylindrical wall. The dimple extends around the internal surface over an angle in the range of 90-270°.

Abstract: A medical fluid pumping system that includes a medical fluid pumping machine that includes an actuator and a medical fluid cassette that can be disposed within a cassette enclosure of the medical fluid pumping machine. A member is disposed within a fluid pump chamber of the medical fluid cassette and is magnetically attracted to the actuator such that the member and the actuator can be coupled together when the cassette is disposed within the cassette enclosure.

Abstract: A liquid metering pump includes an intake nozzle (2) provided with an intake valve (3) communicating with a working chamber (4) in which a piston (5) can be moved in an alternating translation movement, suction being produced, with the intake valve open, when the piston moves away from the nozzle, and delivery being produced, with the intake valve closed and liquid emerging through an outlet valve, when the piston moves towards the nozzle. The pump includes, between the intake valve (3) and the working chamber (4), a device (D) for detecting the variation in pressure, the device (D) including a duct (10), which is connected at one end to the working chamber (4) and is provided at its other end with the intake valve (3), and an element (11) which is sensitive to the pressure in the duct, the element (11) being mounted in the wall of the duct.

Abstract: An impeller designed to be mounted on a rotary shaft includes: a basic rim provided with blades protruding on one surface of the basic rim, and a hub capable of being coupled to the basic rim and to the rotary shaft. In certain embodiments, the impeller includes an annular plate and the hub, where the annular plate and the basic rim are configured to interact together so as to hold the basic rim axially and to maintain a freedom of radial deformation of the basic rim relative to the hub and to the annular plate.

Abstract: Described is drug infusion device and lineset for delivering medication. The novel pump and lineset described herein eliminate the ability of the pump and lineset from being primed when the cartridge reservoir is in fluid communication with the drug-delivering cannula, through which medication is delivered, is inserted into the skin of a patient. The system and method of the invention include a lineset having a plurality of electrical leads for allowing electrical communication between the infusion pump and the infusion set and for allowing the pump to determine whether the lineset is connected to the infusion set when a priming operation is initiated.

Abstract: A medical device has a distal member with a configuration that can be changed by means of a control handle with a control assembly employing a rotational cam, a shaft, and a pulley, where the rotational cam is rotationally mounted on a portion of the control handle for rotation by a user. The rotational cam operates on the shaft to move it proximally or distally depending on the direction of rotation which in turn rotates the pulley to draw or release a puller wire to change the configuration of the distal member of the medical device. The shaft is oriented along a diameter of the control handle. The shaft has two ends which extends through two axial guide slots in the portion of the control handle to sit two opposing helical tracks formed on inner surface of the rotational cam. The guide slots are parallel with the longitudinal axis of the control handle and therefore maintain the shaft's diametrical orientation as the rotational cam is rotated to move the shaft proximally or distally.

Abstract: An implantable medical device for implantation in a mammal joint having at least two contacting surfaces is provided. The medical device comprises; an artificial contacting surface adapted to replace at least the surface of at least one of the mammal's joint contacting surfaces, wherein the artificial contacting surface is adapted to be lubricated, when implanted in said joint. Furthermore the medical device comprises at least one inlet adapted to receive a lubricating fluid from a reservoir, at least one channel at least partly integrated in the artificial contacting surface in connection with the at least one inlet for distributing the lubricating fluid to the surface of the artificial contacting surface. The medical device could be adapted to be operable by an operation device to receive the distributed lubricated fluid from a reservoir.

Abstract: A steerable kink resistant access device is provided having an elongated body and a steerable portion; methods for manufacturing the kink resistant device are also provided. The access sheath has an outside diameter sufficiently small so that it may be inserted into a body cavity or conduit. The access sheath typically has two internal lumen, a first lumen sized and configured as an access to a surgical site and a second lumen sized and configured to contain a tensioning device that, when acted upon, will deflect the steerable portion. The tensioning device may be directly or remotely attached to an actuation device that operates to control the tensioning and loosening of the tensioning device.

Abstract: A pump comprises at least one piston slidable within an opening along a movement direction in order to vary the volume of a chamber. The pump further comprises a casing within which a driving device is housed for moving the piston, and a head within which the chamber is at least partially obtained, the chamber being partially delimited by the piston. A high pressure sealing element is located in a proximal position with respect to the chamber and a low pressure sealing element is located in a distal position with respect to the chamber to stop any quantities of liquid that the high pressure sealing element has let through. The high pressure sealing element is housed inside the head and the low pressure sealing element is housed inside the casing.

Abstract: A compressor control apparatus, and a refrigerator including the same are provided. The operation of two compressors may be controlled using an alternating current (AC) switch, thereby minimizing a number of components, as well as increasing compressor capacity and enhancing operation efficiency. A plurality of operation modes may be used to correspond to a load or freezing capacity using two compressors, and the two compressors may be operated in a separate or simultaneous manner using a drive including two (AC) switches, thereby simplifying the configuration of the system.