Abstract: An improved valve port system provides blood access in a patient through a subcutaneous fluid flow conduit during a dialysis procedure. The system includes several elements, including a engagement member defined by a tubular body having a proximal end, a distal end and a tubular lumen therebetween. The distal end has a tapered bevel defined thereat and a tapered protrusion proximate thereto defined upon an exterior surface of the tubular body. In addition, the system provides a dialysis port member having a housing with a generally cylindrical valve rotatably positioned therein. The valve includes an open end, a closed end and an orifice near the closed end. The valve further includes a longitudinal groove defined along an interior surface thereof. The groove, which is capable of being in registry with the protrusion, is coincident with the protrusion so as to intussuscept the protrusion therein.

Abstract: A delivery device includes a durable housing portion and a separable disposable portion that selectively engage and disengage from each other. The disposable housing portion secures to the patient-user and may be disposed of after it has been in use for a prescribed period. Components that normally come into contact with a patient-user or with infusion media are supported by the disposable housing portion for disposal after the prescribed use, while the durable housing portion supports other components such as electronics for controlling delivery of infusion media from the reservoir and a drive device and drive linkage.

Abstract: A delivery device includes a durable housing portion and a separable disposable portion that selectively engage and disengage from each other. The disposable housing portion secures to the patient-user and may be disposed of after it has been in use for a prescribed period. Components that normally come into contact with a patient-user or with infusion media are supported by the disposable housing portion for disposal after the prescribed use, while the durable housing portion supports other components such as electronics for controlling delivery of infusion media from the reservoir and a drive device and drive linkage.

Abstract: A shape memory shutter device for controlling the rectum of a disabled person, comprises a section of conduit to be connected to the rectum of the disabled person, and a shutter which controls the passage through the conduit section and actuated by a shape memory actuator. The shutter comprises a plurality of petals positioned circumferentially around the conduit section and able to move between a closed and an open position. The actuator comprises shape memory wires associated to the petals which are supplied with electrical current to cause opening of the petals.

Abstract: The present invention is directed to a connector with which negative pressure in the channel space in the connector can be prevented during luer removal, in a closed-system connector. A slit (49) is furnished in valve body (40) of three-way stopcock (100). During luer access and luer removal, first and second moving parts (M1and (M2) to the left and right of slit (49) enter and withdraw from first and second valve body accommodating chambers (51) and (52), respectively. First and second valve body accommodating chambers (51) and (52) are formed outside of channel space (S), so the operation whereby first and second moving parts (M1) and (M2) enter and withdraw during luer access and luer removal does not affect the change in volume of channel space (S) and negative pressure can be prevented from occurring in channel space (S) by the aforementioned entry and withdrawal.

Abstract: A flow rate selection valve includes a gate cylinder having a gate cylinder rotational axis and having at least two flow rate determining passageways and passing laterally through the gate cylinder at orientations angularly displaced from each other and having cylinder rotation structure; and a valve housing containing a flow passageway and having a cylinder receiving bore intersecting the flow passageway into which the gate cylinder is rotatably and sealingly mounted, the gate cylinder dividing the flow passageway into a passageway inlet end and a passageway outlet end, the flow passageway containing a passageway registration barrier extending across the flow passageway and sealingly abutting the gate cylinder and having several flow ports with different minimum diameters, each flow port positioned to register with one of the flow rate determining passageway.

Abstract: A catheter is provided including a tubular body having a proximal end and a distal end. The body includes a first lumen and a second lumen with a septum disposed therebetween. The proximal end includes a valve and a hub that are integral with the body. The hub includes a first conduit and a second conduit. The valve includes a first port and a second port that are rotatable, about a longitudinal axis of the body, to establish fluid communication between the lumens and the conduits. The distal end of the tubular body may be configured for insertion with a subject. The conduits may be connectable to a medical apparatus.

Abstract: A suction limiting device with variable control for use in a surgical system includes a main vent body having a fluid carrying bore extending therethrough and a variable vent mechanism having a main vent opening in selective fluid communication with the fluid carrying bore so as to permit introduction of atmospheric air into the fluid carrying bore. The vent mechanism being adjustable so that the degree of airflow into the fluid carrying bore is variable between a fully open position to a fully closed position where atmospheric air is prevented from entering the fluid carrying bore. The suction limiting device also includes a valve disposed within the main vent body and positionable between an open position when negative pressure and a closed position when positive pressure exists in the main vent body.

Abstract: A number of devices are illustrated for providing a manifold that can simply and selectively couple a number of different therapeutic and diagnostic elements to a catheter or other medical device. Some examples include devices having sliding actuators, rotary actuators, button actuators, or combinations thereof, for easily changing the valve scheme and fluid pathways within a manifold.

Abstract: The invention concerns a device comprising two components connected to each other with possible displacement of one component relative to the other, sealing means arranged between said two components, and flow rate adjusting means actuated by displacement of one component relative to the other. The invention is characterized in that the device comprises positioning means for placing the two components in two different positions, namely a first so-called sterilizing position, wherein said two components do not, or hardly exert, any stresses on the sealing means, and second so-called operating position, wherein said two components stress the sealing means to provide the required sealing conditions.

Abstract: A fluid control apparatus is disclosed for controlling fluid flow between a catheter, an injector, a saline supply, a waste dump and a contrast supply. The apparatus includes a valve stem movable within a cavity disposed in a valve body. The valve stem is movable to a plurality of positions including a contrast position where the valve stem provides communication between the injector and a contrast supply, a saline/waste position where the valve stem provides communication between the injector and a saline/waste line and an injection position where the valve stem provides communication between the injector and an outlet port connected to the catheter.

Abstract: A system for facilitating hemostasis of a puncture site in a blood vessel delivers an absorbable sponge pledget in a hydrated state to a position at an exterior of the blood vessel puncture to facilitate hemostasis. The system includes a staging chamber, a delivery cannula, and a pusher. The staging chamber is used for hydrating a pledget of absorbable sponge, compressing the pledget, and delivering the pledget to the delivery cannula. The staging chamber may include a valve for facilitating hydration and staging of the pledget. The delivery cannula and pusher are used to accurately place the sponge pledget outside the blood vessel. An easy loader connector may be used to facilitate loading the dry pledget into the staging chamber.

Abstract: A fluid control valve is disclosed which, with a single valve, can manipulate flow between a saline supply, a contrast supply, a waste dump and a catheter. The control valve includes three primary positions including a contrast position where the valve provides communication between an injector and a contrast supply while isolating the saline supply and catheter. The valve also can be moved to a saline/waste position where the valve provides communication between the injector and the saline supply and/or the waste dump while isolating the contrast supply and catheter. The valve also can be moved to an injection position where the valve provides communication between the injector and the catheter. A single valve provides all three functions. The valve also may provide communication between a pressure transducer and catheter during the saline loading, waste dumping and contrast loading functions. The valve also provides protection or isolation of the pressure transducer during injection procedures.

Abstract: An enterostomy device for providing fluids and nutrients through a stoma formed through the abdominal wall of a patient is described. The enterostomy device, which may be configured as either a gastrostomy device or a jejunostomy device, comprises a low-profile retaining member which is configured to be unobtrusively positioned within the stomach or the intestine, and which is configured to provide sufficient surface area for contacting the stomach or intestine to prevent unintentional removal or release of the enterostomy device from the patient. The enterostomy device is also structured with a low-profile port hub for facilitating the inflation of the retaining member and feeding and venting through the stoma.

Abstract: A gas filler device for use in medical procedures such as laparoscopy is disclosed. Preferably, the gas filter device includes a housing having a first side wall and a second side wall, and a gas filter including a porous element including a hydrophobic membrane, the gas filter device allowing gas to pass through the porous filter element and the first side wall.

Abstract: This invention discloses a donor blood sampling apparatus attached to a tubing branch, a donor needle attached to an upstream tube, the donor needle being adapted for drawing blood from a body and a main collection bag attached to a donor tube, characterized by a flow controller.

Abstract: A conductive composition for a biological electrode is capable of reducing the impedance between the electrode and the skin. A conductive gel composition for a biological electrode which is capable of electrically and physically connecting a living body to an electrode element and is composed of at least the following components: (1) a radical-polymerizable unsaturated compound; (2) a moisturizer serving as a plasticizer and functioning to supplementing and promoting the physiological humidifying function of the horny layer; (3) a polymerization initiator; and (4) a crosslinking agent. This moisturizer serves also as a plasticizer and, furthermore, elevates the moisture content in the horny layer at the application of this composition. The above-mentioned composition may further contain a plasticizer selected from among polyhydric alcohols, amines and ethers.

Abstract: A surgical fluid flow handpiece provides a range of relatively low flow rates with relatively fine manual control in selecting a flow rate in such relatively low range, and also provides for manual selection of a relatively high flow rate namely a flow rate well above such range. The handpiece is shaped to complement the shape of a user's hand.

Abstract: A number of devices are illustrated for providing a manifold that can simply and selectively couple a number of different therapeutic and diagnostic elements to a catheter or other medical device. Some examples include devices having sliding actuators, rotary actuators, button actuators, or combinations thereof, for easily changing the valve scheme and fluid pathways within a manifold.

Abstract: An improved valve port system provides blood access in a patient through a subcutaneous fluid flow conduit during a dialysis procedure. The system includes several elements, including a engagement member defined by a tubular body having a proximal end, a distal end and a tubular lumen therebetween. The distal end has a tapered bevel defined thereat and a tapered protrusion proximate thereto defined upon an exterior surface of the tubular body. In addition, the system provides a dialysis port member having a housing with a generally cylindrical valve rotatably positioned therein. The valve includes an open end, a closed end and an orifice near the closed end. The valve further includes a longitudinal groove defined along an interior surface thereof. The groove, which is capable of being in registry with the protrusion, is coincident with the protrusion so as to intussuscept the protrusion therein.

Abstract: A tubular set is provided for the extracorporeal treatment of blood, for example hemodialysis. The set has a patient arterial line and a patient venous line, each line having a patient connector at one end thereof. Each patient line connects at its other end to a reversing flow valve. The valve also connects to respective first ends of a blood processing unit arterial line and a blood processing unit venous line. Each of the unit lines carry a connector at ends opposed to the first ends for connection respectively to arterial and venous ports of a blood processing device, typically a dialyzer. The reversing flow valve has a first position that respectively connects the patient and unit arterial lines with the patient and unit venous lines. The reversing flow valve has a second position that connects the patient arterial line with the unit venous line, and the unit arterial line with the patient venous line.

Abstract: A handpiece (20) for actuating a surgical cutting accessory (24). The handpiece has a housing (22) with a bore (46) through which a suction is drawn. A valve (50) regulates the suction flow. The valve (50), formed of metal, has an barrel (60), formed of rubber, that surrounds the rotating valve stem (56). The barrel defines a non-circular openings (96) through which there is suction flow. The openings are shaped to have small diameter sections (104) that initially come into registration with the suction bore when the stem is rotated to the open state. This ensures that, when the valve is open, there is only a relatively small surgeon-selected suction flow through the handpiece. The barrel is formed with ribs (94, 106) the serve as seals between the valve and the adjacent surface of the housing. A suction fitting (49) is rotatably fitted to the proximal end of the handpiece.

Abstract: A medical fluid passage switching apparatus comprising: at least, a rotatable shaft F; a cam C which is rotated in relation to the rotating movement of the shaft F to close and open divided tubes for determining a passage of a fluid; and a housing L having tube accepting holes I and so arranged to enable the holding of the cam C, is provided. More particularly, provided are such a medical fluid passage switching apparatus in a continuous ambulatory peritoneal dialysis (CAPD) system and a tube which is decreased in the diameter and/or thinned in the wall at a region where the cam or a combination of the cam and the clamp is engaged for closing and opening.

Abstract: A smoke filter device for use in medical procedures such as laparoscopy is disclosed, the device comprising a filter housing having an inlet port and first and second side walls, the side walls comprising non-woven media, and a smoke filter capable of filtering smoke from gas, wherein the filter is disposed in the housing.

Abstract: A valve apparatus comprising a tubular body having a lumen therethrough and which is adapted for accessing the cardiovascular or other intravenous system of a patient. The body includes a compression chamber communicating with the lumen and adapted to cooperate with a seal. The compressible seal being configured to selectively seal and unseal the lumen in response to a compressive force acting on the seal. The seal having a longitudinal passageway therethrough that communicates with the lumen and is selectively sealed and unsealed in response to changes in the compressive force generated by a plunger assembly. The plunger assembly is configured to apply a certain amount of compressive force on the seal via the engagement of a rotating member and an engagement member under the influence of a rotating end cap. A selecting mechanism comprising a selecting lever and a selecting assembly is movably coupled to the tubular body and communicates with the plunger assembly.

Abstract: A surgical handpiece (20) capable of actuating a cutting accessory (24) and drawing a suction through the cutting accessory. The handpiece has a housing (22). A motor (25) internal to the housing drives the cutting accessory. A suction bore (44) extends through the housing. The suction bore is the conduit through which the suction is drawn from the cutting accessory. A valve (52) regulates fluid flow through the cutting accessory and the suction bore. The valve is positionable in a fully opened position, a fully closed position and intermediate positions between the fully opened and closed positions. An indexing assembly (84) mounted to the valve inhibits rotation of the valve when it is placed in at least one intermediate position. This inhibiting of the valve movement provides a tactile indication of the position of the valve when it is located between the fully open and fully closed positions.

Abstract: A mouth cavity irrigation device comprising a main body (10) and an elongate, generally tubular reservoir (12) removably connected thereto, to provide a handle member. The reservoir holds a quantity of fluid (14), such as water, and can be removed from the main body (10) so as to be cleaned or emptied of or filled with liquid. The main body (10) has an outlet (16) to which is removably and rotatably connected an elongate, generally frusto-conical nozzle (18) having a generally central channel (19) which runs from an inlet (21) to a relatively narrower outlet (24). A manually-operated pump (26) is housed within the main body (10) and a dip tube (28) is connected at one end to a stepped cylinder (29) forming part of the pump (26), the other end of the dip tube (28) extending into the reservoir (12). A manually operable button (41) which activates the arrangement is provided on the outer wall of the main body (10).

Abstract: A fluid control device adapted to mix a fluid contained in a first medicinal vessel with a powder contained in a second vessel to produce therein a drug that is then delivered to a syringe for dispensing the drug. The device includes a fluid control member which in one operative position intercouples the first and second vessels to cause the fluid to mix with the powder to produce the drug in the second vessel. In another operative position of the control member, the second vessel is coupled to the syringe to deliver the drug thereto.

Abstract: An enterostomy device for providing fluids and nutrients through a stoma formed through the abdominal wall of a patient is described. The enterostomy device, which may be configured as either a gastrostomy device or a jejunostomy device, comprises a low-profile retaining member which is configured to be unobtrusively positioned within the stomach or the intestine, and which is configured to provide sufficient surface area for contacting the stomach or intestine to prevent unintentional removal or release of the enterostomy device from the patient. The enterostomy device is also structured with a low-profile port hub for facilitating the inflation of the retaining member and feeding and venting through the stoma.

Abstract: A tubular set is provided for use with extracorporeal treatment of blood. The set comprises: a flow reversing valve having a patient arterial line and a patient venous line each separately connected to one side of the valve. A unit arterial line and a unit venous line are each separately connected to the other side of the valve. The patient arterial line connects with the unit arterial line in a first position of a valve, and the patient venous line connects with the unit venous line in the same first valve position. The patient arterial line connects with the patient venous line in a second position of a valve, while the patient venous line connects with the unit arterial line in the same second valve position. The flow reversing valve is movable between the first and second positions by relative rotation of part of the valve and adjacent portions of the respective lines.

Abstract: A flow-through blood treatment device such as a hemodialyzer comprises a housing, a blood inlet, a blood outlet, and at least one membrane in the housing defining a blood flow path between the blood inlet and outlet on one side of the membrane, plus a second flow path defined on the other side of the membrane. At least one of the blood inlet and outlet is connected to blood flow tubing, which blood flow tubing carries a connector spaced from the housing for access to the vascular system of a patient. The blood flow tubing also defines at least one connection site along its length permitting repeated, temporary connection and subsequent disconnection with branch conduits, for connection with sources of additive solutions or measuring devices. Typically, the blood flow tubing is free of permanently attached, flexible branch tubings a method of use in disclose.

Abstract: A liquid sampling device (10) comprising a housing (12) defining a confined volume (90) and fitted with an inlet port (22) and an outlet port (18) and a drawing member (30) formed with a conduit (38) and being displaceable between a flow position in which the conduit communicates between the inlet port and the outlet port, and a drawing position in which communication between the inlet port and the outlet port is interfered and wherein upon displacing the drawing member (3) into the drawing position, liquid is drawn into the confined volume (10) via the outlet port (18).

Abstract: A fluid control device (10) for use with a syringe and at least one medicinal vessel (28). The fluid control device includes a first port (13), a second port (12) for receiving the syringe, a third port (17) including an adaptor (20) having a fluid conduit member (24) extending into the interior of the medicinal vessel (28) when attached thereto and a flow control member (20′) selectively disposable from a first flow control position enabling a flow path between a first pair of two ports (12, 17) and second flow control position enabling a flow path between a second pair of two ports (12, 13). The flow control member (20′) is coupled to one, of the ports for manipulation between its flow control positions.

Abstract: An indwelling catheter having an extremely low profile proximal section. The indwelling catheter of the present invention solves the problems associated with the prior art feeding catheters by providing an extremely low profile proximal section which is situated external to the patient's body when the catheter is in place. The external portion is preferably in the form of a “trap door”, including a flat base portion that lies against the patient's skin and a flat, hinged cover which is operative to seal the proximal opening of the catheter when not in use. In order to retain the catheter and prevent it from being accidentally dislodged, the catheter includes a series of helical coils which are unformed during catheter insertion and then automatically reform in order to hold the catheter in place internally. The catheter is self-adjusting in that fewer or greater loops will automatically reform depending upon the thickness of the patient's abdominal wall.

Abstract: A tubular set is provided for the extracorporeal treatment of blood, for example hemodialysis. The set comprises a patient arterial line and a patient venous line, each line having a patient connector at one end thereof. Each patient line connects at its other end to a reversing flow valve. The valve also connects to respective first ends of a blood processing unit arterial line and a blood processing unit venous line. Each of the unit lines carry a connector at ends opposed to the first ends for connection respectively to arterial and venous ports of a blood processing device, typically a dialyzer. The reversing flow valve has a first position that respectively connects the patient and unit arterial lines with the patient and unit venous lines. The reversing flow valve has a second position that connects the patient arterial line with the unit venous line, and the unit arterial line with the patient venous line.

Abstract: The present invention provides a number of pumping systems and injection systems particularly useful for injecting a liquid medium into a patient. In general, the pumping systems comprise a removable pumping unit. The removable pumping unit includes means for pressurizing the liquid medium via the rotational displacement of the liquid medium. The present invention also provides a pumping system comprising a pumping unit for pressurizing the liquid medium and a feedback-controlled drive means in connection with the pumping unit for providing a controlled powered drive to the pumping unit. The pumping system further comprises a flow meter for measuring the flow rate of the pressurized liquid medium exiting the pumping system and control means in communicative connection with the drive means for providing a control signal to control the powered drive provided to the pumping unit.

Abstract: A cannula comprises a housing secured to a generally tubular sleeve member. The housing is provided with irrigation and evacuation fluid ports for connection to irrigation and evacuation conduits. An instrument port is formed in the housing and aligned with the sleeve member, wherein a surgical instrument can be inserted through the instrument port, housing, and sleeve member and into the bodily cavity. The instrument port includes seal members to seal against fluid leakage from the cannula with or without a surgical instrument passing through the housing and sleeve member. A valve member is rotatably carried by the housing to selectively obstruct one or more of the irrigation and evacuation ports. The valve is arranged such that the surgical instrument may remain in the housing and sleeve member during manipulation of the valve.

Abstract: An apparatus for controlling the flow of fluids between a main conduit and a plurality of secondary conduits includes a valve body having a wall defining a cylindrical bore, the wall having a plurality of ports in respective flow communications with the main conduit and the secondary conduits, and a valve element rotatably disposed within the cylindrical bore of the valve body. The valve element body has internal flow paths with openings flush with a peripheral surface of the valve element body and a channel in flow communication with one of the flow paths, the channel having an opening extending from one of the openings of one of the internal flow paths. In addition, one of the internal flow paths has an enlarged opening to accommodate flow through the channel. The valve element and valve body cooperate to permit fluid flow between the main conduit and a selected one of the secondary conduits by rotating the valve element to align the openings of the channel and the flow paths relative to the ports.

Abstract: A bolus pump apparatus is provided for connecting an IV bag to an infusion set. The bolus pump apparatus includes a pump connector assembly and a syringe pump. The pump connector assembly includes one or more valves adapted to provide selective fluid communication between the IV bag, the syringe pump, and the infusion set. The syringe draws a bolus of fluid from the IV bag through the pump connector assembly while the pump connector assembly prevents fluid within the infusion set from being drawn into the syringe. The syringe pumps a bolus of fluid from the syringe through the pump connector assembly to the infusion set, while the pump connector assembly prevents fluid within the syringe from being pumped into the IV bag.

Abstract: The invention relates to a microcatheter set with a minimized dead space which has a medicine application and flushing device especially suitable for intensive paediatric-neonatologial medicine. It makes it possible not only to apply infusion therapy via a microcatheter inserted into a large body vein but also to administer drugs repeatedly without any danger via the medicine application and flushing device integrated within the set, even with highly pharmacologically effective additives to the general infusion solution, and/or to do away with partial and total catheter shut-offs. This thus excludes additional stress on and risk for the patient by the repeated application of peripheral infusions or the use of surgically inserted double-lumen central catheters for the intravenous administration of drugs.

Abstract: An intravenous-line flow-control system for receiving a disposable cassette disposed in the intravenous line. The system prevents the free flow of intravenous fluid through the cassette when the cassette is removed from the system. The system includes a control unit having a door or similar structure for holding the cassette against a receiving surface. The control unit includes a stepper motor and a transmission member for turning a rotatable control valve on the cassette in order to restrict variably the flow of fluid through the cassette. When the door is being opened but while the cassette is still held against the receiving surface, a motor-disengagement mechanism moves at least the transmission member, and preferably the stepper motor as well, from a first position, from which the control valve may be engaged by the transmission member, to a second position, in which the transmission member is disengaged from the control valve.

Abstract: The invention is an irrigating device having a rigid housing defining a canal containing a three way valve selecting between three ends where at least one of the three stems has an elastic attachment for receiving two separate non-elastic medical input devices sharing a common chamber which common chamber communicates with the rigid housing canal. It has at least one three-way valve directing the flow of suction or fluids to graduated openings in the medial, distal and proximal direction. The medial opening is where the elastic attachment is place which defines a plurality of tubes. All of these tubes may be elastic. All may have an inner circumference for receiving a tube or syringe of corresponding outer diameter. Alternatively, one of these tubes may be elastic having an outer diameter for insertion into a tube or syringe of corresponding inner diameter so as to form an elastic, but water tight seal.

Abstract: Apparatus for controlling a fluid flow includes a housing having a first fitting for connection of a tube and at least one further fitting for detachable securement of a coupling piece of a peritoneal catheter. Accommodated in the housing is a rotary valve which is indexable in predetermined positions to selectively establish a fluid communication between the fittings. Associated with one of the fittings is at least one closure member which is acted upon by the rotary valve for displacement in a radial direction to open and close a passage to the peritoneal catheter.

Abstract: Type-A (operational) and type-B (non-operational) syringes (2A, 2B), used for double-blind clinical tests, are constructed so the type-B syringe mimics the operation of the type-A syringe while avoiding the delivery of anything into the patient. Each syringe includes an injector (4), a fluid connector (12) coupling the exit port (10) of the injector to a discharge port (14) to which a catheter or needle cannula is connected, a valve (18) positioned along the fluid connector, and a dumping reservoir (24) mounted to the valve. The type-A valve fluidly couples the exit port to the discharge port in both purging and infusion positions. The type-B valve couples the exit port to the discharge port in the purging position, but couples the exit port to the dumping reservoir in the infusion position. The infusate is directed through the catheter and into the patient when in the infusion position with the type-A valve but is directed into the dumping reservoir with the type-B valve.

Abstract: An economical, reliable and universal intravenous infusion system is disclosed which permits a customized or generic fluid or powder medication stored in a proprietary or conventional pharmaceutical vial to be mixed in solution with the fluid contents of an IV bag so that the mixture can be administered according to the needs of a patient via an IV fluid line having a drip chamber connected therein. Fluid communication between the IV bag and one of the IV fluid line and the pharmaceutical vial is selectively controlled by the position of a rotatable valve barrel in a fluid control valve. A universal vial receiving and docking receptacle that is uniquely and advantageously adapted to accept and carry pharmaceutical vials of different size moves through a hollow docking port from a first, as-packaged location, to a second location at which the vial is placed in fluid communication with the IV bag via the valve barrel at such time when the IV is to be administered.

Abstract: A dual suction device includes an enclosed housing with a hollow interior cavity and an exhaust port formed in a rearward wall of the housing. A suction tube is pivotally mounted to the housing to pivot between a first position communicating with the exhaust port, and a second position sealed from the exhaust port. A tubular arm is also connected to the housing and fluidly connected to the interior cavity. A flap on the suction tube is moved in conjunction with pivotal motion of the suction tube to selectively alternate suction from the exhaust port between the tubular arm, when the suction tube is in the second position, and the suction tube, when the suction tube is in the first position.

Abstract: A technique for pulsed-injection of radiographic contrast agent uses a pressurized source of contrast agent interrupted by a rotary valve at rates ranging from 1 to 30 Hz. This produces well-defined boli at the end of the catheter. The position of these boli is recorded by a digital radiographic system and analyzed to produce quantitative measurements of blood velocity and flow rate throughout the cardiac cycle.

Abstract: In a fluid conduit connecting device for medical purposes a housing and a connecting member, being connectable to the housing, carry cooperating sealing surfaces. For the purpose of protecting the sealing surfaces of the connecting member these surfaces are covered by protective surfaces of a protective member prior to the connection of the connecting member to the housing. Protective member is arranged to uncover the sealing surfaces when the connection into the housing takes place. The device is suitable particularly for connecting the blood stream of a patient to an external conduit and allows continuous arteriovenous hemofiltration.

Abstract: A fluid control apparatus comprising a housing having a plurality of discrete ports; conduits individually interconnecting the ports and discrete sources of, and receptacles for, fluid; and a valve member positionable in the housing in preselected fluid transferring positions relative to said ports whereby, in a first fluid transferring position, fluid can be transferred by the valve member from one of the fluid sources to one of the fluid receptacles through the ports thereof and, in a second fluid transferring position, fluid can be transferred by the valve member from the one of the fluid receptacles to a second of the fluid receptacles through the ports.

Abstract: The present invention relates to a stop-cock valve useable in conjunction with a fluid delivery set for delivering fluids such as intravenous fluids or enteral fluids from one or more containers to a patient. The valve includes a shear-away interference member which holds the valve in a closed position prior to use in order to prevent accidental premature free flow of fluid therethrough. The valve also includes a venting passage for allowing access of sterilization gas into all fluid flow passages of the valve even when the valve stem is rotated to a closed position.