Abstract: An implantable rotary sealless blood pump is provided. The pump includes a housing having an inlet tube on one end and an impeller casing on the other end. A rotor is mounted for rotation within the housing, with the rotor having an elongated shaft portion and an impeller attached to the shaft portion. The impeller is located within the impeller casing. Radial magnetic bearings are carried by the shaft portion and radial magnetic bearings are carried by the housing for maintaining the shaft portion of the rotor within the inlet tube of the housing. A rotor motor includes a plurality of permanent magnets carried by the impeller and a motor stator including an electrically conductive coil located within the housing. A ring of back iron is carried by the impeller to aid in completing a flux return path for the permanent magnets. A plurality of hydrodynamic thrust bearings are located outside of the axis of rotation of the rotor.

Abstract: A needle-less injector suitable for injecting liquid medication through a skin surface of a patient include a housing, a driver, a pop valve and a trigger. The housing containing the liquid medication and a gas storage chamber containing a gas. The driver that forces the medication out of the housing at a sufficient speed to pierce the skin surface of the patient. The pop valve is mounted in the housing to seal the gas in the housing. The resistance sensitive trigger is coupled to the pop valve and is used to release the pop valve, such that it pops open into the gas storage chamber of the housing, to release the gas to activate the driver to force the liquid medication out of the housing. The resistance sensitive trigger is activated upon application of a predetermined amount of pressure to the resistance sensitive trigger that is opposed by a predetermined amount of resistance from the skin surface of the patient.

Abstract: An improvement in an internal bolster for a corporeal access tube assembly wherein a retention balloon is preformed of relatively thick silicone rubber film. The balloon includes parallel front and rear sidewalls connected by a semi-circular treadwall, the front sidewall having a front retention surface thereon with a radial width equal to the radius of the treadwall. Annular sleeves at the inner periphery of each sidewall are sealed to the outer surface of a tube segment. Each sleeve extends forwardly of its corresponding sidewall.

Abstract: In a self-retaining catheter in which a leading end of the catheter can be fixed to an inner wall of a tubular organ such as a blood vessel, a wire with higher stiffness than a catheter body and in a winding shape greater than an outside diameter of the catheter body is mounted inside a leading end of the catheter body or in a projecting state from the leading end of the catheter body. An aperture of a slit shape is formed in a peripheral wall of the catheter body, in order to allow a medical fluid to flow out therethrough. A self-retaining catheter inserting apparatus includes the above-stated self-retaining catheter, a core wire arranged to be inserted into and withdrawn from the self-retaining catheter, a master catheter through which the self-retaining catheter can pass, and a sheath necessary for the master catheter to be inserted into a tubular organ, and preferably, the apparatus further includes a medical fluid injection port.

Abstract: A syringe apparatus and process for using the same is provided, the syringe apparatus having a barrel, a plunger movable within the barrel, a needle assembly attached to an end of the barrel and having a passageway therethrough, a deformable base positioned within the barrel, flexible supports included on the deformable base, a spring within the passageway of the needle assembly, a hollow needle passing through the passageway, an enlarged head on the needle, and a rupturable web on an end of the plunger, whereby when the plunger moves through the barrel toward the needle assembly, a fluid can be moved from the barrel through the hollow of the needle, and continued movement of the plunger flexes the supports and moves the deformable base downwardly until such time a sufficient force is imparted to the rupturable web by the enlarged head to tear the web, the deformable base then releasing the needle due to force applied by the spring to project the needle into the interior of the plunger.

Abstract: It is a primary object of the present invention to provide an automated system based on an integral fluid bag for administering a variety of intravenous drug regimens and reducing the vagaries of existing manual systems. The fluid has multiple chambers configured to implement a prescribed intravenous medical therapy. Each chamber's geometry (size, shape), sequence and position, alone and in combination with the other chambers, matches the prescribed intravenous therapy or drug regimen. The bag's configuration assures that the intravenous therapy is administered in accordance with the prescribed drug regimen, thus automating the previous manual method. A choice of fluid bag configurations may be stocked so that a prescription for well known and widely accepted drug regimens may be filled by merely selecting a bag with the appropriate chamber configuration and filling it with the prescribed medications.

Abstract: A device for delivering a liquid therapeutic preparation into the body of a patient by injection into or through the skin of the patient comprises a low-profile housing having a bottom surface adapted to be brought into contact with the skin of the patient. A reservoir is disposed within the housing for containing a liquid therapeutic preparation to be administered. An injection needle is disposed generally horizontally in the housing, and is adapted to communicate with the reservoir. The injection needle has a bent injection end which is adapted to project through a needle aperture in the bottom surface of the housing. A movable needle carrier is disposed in the housing for carrying the injection needle and for causing the injection end of the needle to project through the needle aperture upon movement of the needle carrier.

Abstract: A containment and intravenous delivery bag device for supplying a patient with mixed chemical component nutrients includes a first pouch and a second pouch that are separated by a tube passageway. A frangible valve is fitted within the tube. When the frangible valve is broken a first liquid within the first pouch enters the second pouch and mixes with a second liquid within the second pouch. The mixed liquid may then be delivered to the patient.

Abstract: In an apparatus for orally administering a dosage of a liquid, medication, or a suspension, to patients able to swallow but otherwise unable to independently ingest the liquid medication, or suspension, a sleeve is provided and includes a first open end and a closed second end. The sleeve defines an reservoir or reservoir, and a flange having an aperture extending therethrough and in communication with the reservoir extending outwardly from the second end. A hollow tube is attached to the flange and is adapted to be inserted into a patient's mouth to a point where the end of the tube is adjacent to the patient's throat. A plunger having an end adapted to slide and to seal against an interior wall of the reservoir is included and can move between a first and a second position to draw the liquid, medication, or suspension into the reservoir and inject it into the patient's mouth.

Abstract: A catheter system for use in minimally invasive cardiac surgical procedures. The catheter system diminishes certain trauma generally associated with invasive cardiac procedures while providing aortic occlusion, extracorporeal circulation, cardiac arrest, and cardiac venting. The catheter system provides a minimally invasive and simplified system that performs total cardiopulmonary bypass with ease of insertion, improved whole body profusion, and shortened recovery periods. The catheters are refined, with reduced diameters and specialized functions for maximum control of each aspect of cardiopulmonary bypass.

Abstract: A safety syringe includes a barrel, a plunger, a needle set and a needle sheath. The plunger can be engaged with the needle set after completing an injection with the syringe, and the needle set can be then pulled in into the barrel for storage. Further, the needle set inside the barrel will pose automatically obliquely for avoiding the needle cannula being accidentally exposed exterior to the barrel.

Abstract: A corporeal access assembly including a tube segment having a body formed of silicone rubber and containing a coil spring embedded therein. The silicone rubber has a low durometer hardness of about 35 on the A scale. The tube segments have relatively large diameter liquid flow passages therethrough for all French sizes, from 12Fr to 24Fr. The body wall thickness for all French sizes remains the same. An air lumen is provided in one embodiment of the tube segment, with a set connector attached which has a removable plug for blocking or opening an air passage to a retention balloon.

Abstract: An elongate side port of small circumferential extent is formed in a hollow bore needle of the type used for marking the location of a lesion or a tumor in a breast or soft tissue. A wire carrier housing an elongate flexible marking wire is slideably received within the hollow bore. The needle, wire carrier and wire are inserted into a breast or soft tissue so that the side port is facing a lesion. After position adjustments have been made, if needed, the wire is advanced so that its distal end is deflected through the side port by a radius formed in the distal end of the wire carrier. When extended, it marks the location of the lesion and anchors the wire against migration. If the position of the needle is then understood to be unsatisfactory, the marking wire is withdrawn through the side port and back into the wire carrier and the needle is withdrawn and then re-positioned.

Abstract: The invention provides a handheld, manually operable fluid applicator, particularly suited to the needs of surgeons, for dispensing a multi-component fluid applicator, for example fibrin and thrombin components of a tissue adhesive. The sealant components undergo turbulent mixing in a mixing chamber which causes a sharp change of at least 60 degrees in the direction of flow of each sealant component, to provide effective mixing and a quality sealant product. The mixing chamber has an increased cross-sectional area over the combined areas of the component supply passages and the fluid flows are directly opposed to impinge on each other in the mixing chamber. The mixing chamber is incorporated in a novel one-piece flexible and resilient manifold. Dual nozzle spray applicators with poppet valves are also disclosed.

Abstract: There is disclosed a liquid medicine continuous infuser having a basic structure comprising a bag-shaped member that can apply a pressure to a liquid medicine accommodated inside the infuser, an inflow/outflow section for flowing in and flowing out the liquid medicine, and an area positioned inside the bag-shaped member and having a predetermined volume. The above pressure provides a predetermined characteristic curve in relation to the capacity of the bag-shaped member, and the area having the predetermined volume is for increasing the capacity of the bag-shaped member when the liquid medicine is accommodated inside the bag-shaped member. Further, the bag-shaped member is for applying a pressure to a liquid medicine accommodated inside the bag-shaped member along with the predetermined characteristic curve, with a pressure corresponding to the capacity increased by the area having the predetermined volume, when the liquid medicine is accommodated inside the bag-shaped member used, as an initial value.

Abstract: An ultrasonic dissection and coagulation system for surgical use is provided. The system includes an ultrasonic instrument, a control module, and a pedal actuator. The ultrasonic actuator has a housing and an elongated body portion extending from the housing. An ultrasonic transducer supported within the housing is operatively connected to a cutting blade by a vibration coupler. The vibration coupler conducts high frequency vibration from the ultrasonic transducer to the cutting blade. The cutting blade has a cutting surface which is angled with respect to the longitudinal axis of the elongated body portion and, thus, with respect to the axis of vibration. A clamp member having a tissue contact surface is positioned adjacent to the blade member and is movable from an open position in which the tissue contact surface is in close juxtaposed alignment with the cutting surface to clamp tissue therebetween.

Abstract: A catheter system including an infusion catheter interacting with an occluding wire. The infusion catheter has an interior surface defining a lumen longitudinally extending between a proximal end and a distal end. The interior surface of the catheter includes a cylindrical first portion positioned at the proximal end, a cylindrical second portion positioned at the distal end, and an annular, sloped, tapered portion extending therebetween. The second portion terminates at a tip opening. An annular sensing ridge radially inwardly projecting around the tip opening. A plurality of small infusion holes extend through the side of the infusion catheter proximal of the tapered portion. The occluding wire includes a thin placement wire having an enlarged occluding ball placed at the distal end thereof. Projecting from the occluding ball on the side opposite the positioning wire is a coiled spring wire. The spring wire has ridges formed by the top of the wire and grooves formed between each coil.

Abstract: A syringe pump infusion control set (10) includes a high cracking bottle port check valve (22) and a low cracking patient port check valve (50) by which to selectively and automatically couple a syringe (40) to the fluid source (36) and the patient (58) with proper dynamic response for an injection from the syringe (40).

Abstract: A cannula for conducting fluid to a body includes a cannula body having proximal and distal ends and a lumen extending therebetween. The lumen is adapted to receive the fluid flowing therethrough. The cannula also includes a cannula tip, which is coupled to the distal end of the cannula body. The canula tip includes a side wall having a plurality of fluid outlets formed therein. Each fluid outlet is directed toward the proximal end of the cannula body to reverse the flow of fluid exiting the cannula by an obtuse angle from the original direction of flow.

Abstract: Medical guidewires and catheters include tubular bodies having coils at their distal ends to permit steering through the vasculature. The guidewires and catheters are useful for delivering fluids to a target site, draining body fluids from a target site, and are particularly useful for the infusion of medicaments to sites within the body.