Abstract: A sensor is located in the intake passageway of an engine for sensing a parameter representing a function of the air-fuel ratio of an air-fuel mixture produced for the engine and is heated to a predetermined temperature when the temperature of the sensor is below the predetermined temperature above which it is possible for the sensor to sense the parameter.

Abstract: Disclosed is a split operation type internal combustion engine having a plurality of cylinders which are divided into a first cylinder group and a second cylinder group. The cylinders of the first cylinder group are connected to a first common intake manifold equipped with a first carburetor, and the cylinders of the second cylinder group are connected to a second common intake manifold equipped with a second carburetor. The second intake manifold is connected to the exhaust manifold via a bypass passage, and an exhaust valve is arranged in the bypass passage. A first gear actuated by the accelerator pedal is operatively connected to the first throttle valve of the first carburetor and intermittently engaged with a second gear connected to the second throttle valve of the second carburetor. The firing operation is always carried out in the first cylinder group.

Abstract: A method for controlling the distribution of spark voltages generated by an ignition coil to spark plugs provided on multiple cylinders of a combustion engine. A spark voltage distributor is provided with a rotatable electrode connected to the ignition coil and multiple stationary electrodes connected to the respective spark plugs. The rotatable electrode is rotated by an electric motor at a speed depending upon the rotation speed of an engine output shaft and the rotational position of the output shaft indicative of the timing of spark voltage generation so that the engagement of the rotatable electrode with the stationary electrodes is synchronized with the spark voltage generation.

Abstract: A dual spark plug ignition engine is equipped with an EGR system. The two spark plugs in each combustion chamber are simultaneously energized to produce sparks to ignite the charge in the combustion chamber under a normal engine operating conditions, whereas the spark plugs are energized with a predetermined phase difference from each other under high power output engine operating conditions.

Abstract: To provide for an extended heat dissipating surface to an ignition coil, the coil is combined in a single housing structure with electronic control components, and located in a well or trough or tub-like housing structure, surrounded by a resin potting compound, but separated from the housing structure which, preferably, is a metal pressure or investment casting by a cushioning layer to provide for compensation of shrinkage, or expansion, upon differential changes between the housing and the coil due to heating, the extended housing structure also enclosing electronic circuit structures such as power components and printed circuit boards to thereby permit electrical association of the components with the ignition coil while, simultaneously, providing for a larger housing structure with increased heat dissipation capability.

Abstract: A spark plug adapter is provided with a small lower portion adapted to be threaded into the spark plug-receiving bore of an internal combustion engine and an upper enlarged portion adapted to receive the spark plug. Around the spark gap of the spark plug is relatively large chamber which functions together with an axial bore which extends through the lower portion as a preliminary combustion chamber. A relatively thin transverse member is arranged diametrically across the axial bore and functions to divide the combustion products into two separate and substantially equal streams and to impart a turbulence thereto as they pass into the internal combustion engine. If desired, the transverse member may carry a conical member with its apex directed toward the spark gap and its base uniformly spaced from the axial bore in order to direct the combustion products in substantially annular sheet form into the internal combustion engine.

Abstract: When the starter motor which can be coupled to an internal combustion engine, typically an automotive engine, has accomplished its function and the automotive engine started, it is disconnected by a switch which is controlled from a sensing circuit connected to the energization circuit of the starter and responsive to a-c components. The system operates on the basis that, before the engine has started, the sequential compression and decompression in the cylinders of the internal combustion engine will result in alternating components which are superimposed or modulated on the energy flow to the starter motor. When the internal combustion (IC) engine has started, the undulations and variations in energy supplied to the motor will terminate. The system is sensitive to such termination and disconnects the starter motor at that time.

Abstract: An improved rotary valve construction is provided for use in conjunction with an internal combustion engine of the type having a housing and at least one piston member reciprocally received within a cylinder formed in the housing. In the conventional fashion, fuel intake passage means formed within the housing communicate a combustible fuel mixture to the cylinder while, likewise, exhaust passage means formed in the engine housing expel exhaust gases from the cylinder. A first and second cylindrical valve member, each having a diametric throughbore, are rotatably mounted in the intake passage means and exhaust passage means, respectively. The valve members are rotatably driven in synchronism with the reciprocation of the piston in the cylinder to thereby open the intake and exhaust passage means via the valve member diametric bore at predetermined rotational positions of the valve members.

Abstract: A modular internal combustion engine is provided in which a single crankcase can be adapted to a plurality of different types of engine configurations. The crankcase is open at its top so that each upper side edge of the crankcase forms a mounting flange while a crankshaft is rotatably carried by the crankcase. Block members and adapter members are provided and each includes a mounting flange formed along each longitudinal side. All of the mounting flanges are substantially identical to each other so that any one mounting flange can be detachably secured to another mounting flange. Thus to construct the engine, one mounting flange of either the block or adapter member is attached to one crankcase mounting flange while one mounting flange on the other member is attached to the other crankcase mounting flange. In addition, the remaining mounting flanges on the block and adapter members register with each other and are secured together.

Abstract: An installation for the metered lubrication of an injection pump flangedly connected to an internal combustion engine, in which the cam shaft is driven by an intermediate gear shaft non-rotatably connected therewith, which is rotatably supported in the crankcase of the internal combustion engine on two slide bearings and which is lubricated from a connection with a lubricating oil channel of the internal combustion engine; at least one of the slide bearings of the intermediate gear shaft is constructed in conjunction with the same as metering device; the metered lubricating oil, after leaving the slide bearing, is supplied by way of a sealed space formed at the connecting place between the cam shaft and the intermediate gear shaft, to a central bore through the cam shaft of the injection pump, from where the lubricating oil reaches the injection pump through a radial bore.

Abstract: A slingshot for hunting, target shooting, or the like, and which includes an adjustably mounted aiming device optimumly located between the slingshot prongs for accurate and selective alignment of the projectile trajectory's range and horizontal placement. The elastic band is releasably mounted to the ends of the slingshot prongs, so that the band protrudes in alignment therewith, thereby reducing the danger of the projectile striking the slingshot or the user's hand, while permitting the mounting of the aiming device between the prongs and making possible rapid and convenient interchange of elastic bands. A slingshot handle, having a cross-sectional dimension parallel to the projectile's trajectory greater than the perpendicular dimension, is also provided for improved safety, accuracy, and facility of use.

Abstract: A dressing device for attachment to a machine of the type used for dressing, grinding and shaping operations on a wheel, or the like. A collar is attached to the frame or hub of a motor housing through which the spindle for the grinding wheel extends. The frame, or collar, carries a post on which a first slide is adjustably mounted. The first slide carries a bar on which a second slide may be adjustably mounted, and the second slide carries a dressing tool head. The head is turnable on a swivel and has a cam slot which serves as a cam guide for actuation of a dressing unit.

Abstract: An oven roof or wall is formed from modular panels, each of which comprises an inner fabric and an outer fabric. Each such fabric is formed with an angle iron framework and somewhat resilient tie-bars or welded at their ends to flanges of the angle irons to maintain the inner and outer frameworks in spaced disposition while minimizing heat transfer by conduction and permitting some degree of relative movement on expansion and contraction of the module components. Suitable thermal insulation is provided within the module. Panels or skins are secured to the fabric frameworks and each such skin is secured to a framework and projects laterally so as slidingly to overlie the adjacent frame member of an adjacent panel in turn to permit relative movement during expansion and contraction.

Abstract: A stove having a combustion chamber surrounded by four sides and a top and having a warm air conduit extending between opposite sides and opening outwardly of at least one of the sides. Where the stove is to utilize natural convection, the conduits open outwardly of both the sides of the enclosure. An opening is provided in the top or bottom of the warm air conduit remote from its outlet or outlets for effecting draft thereto. A preferred embodiment has two such heating conduits at right angles to each other and with an opening therebetween to further increase draft through the conduits. In the case of forced convection, the conduits need only open from one of the sides.

Abstract: The present invention in an energy conserving greenhouse involves an insulated and opaque structure whose inner walls are preferably formed, coated or colored to reflect visible light striking thereagainst onto plant surfaces therein, the structure utilizing a shuttered lense arrangement of minimum dimensions, that is open during daylight hours to pass sunlight from a focusing solar collector, that sunlight passing through an infra red trap to heat a material therein, that heat being removed for immediate heating of the structure and/or storage for later heating thereof, the remaining sunlight spectra, including the visible spectra passing therefrom and to a diffuser that directs and disperses it throughout the structure interior.

Abstract: A solar collector comprising a focussing reflector rotatable about an axis; an adjusting mechanism for effecting rotation of the reflector about such axis; and a solar-tracking arrangement for actuating the adjusting mechanism, the solar-tracking arrangement including a pair of sun-sensor reservoirs each containing a high-pressure working medium that thermally expands when subjected to solar radiation.

Abstract: An efficient solar collector includes an outer evacuated envelope having an upper transparent surface to admit light rays to the envelope and a tube extending in the envelope from one end towards the other for conveying fluid to be heated into the collector and for removing heated fluid from the collector. A selectively absorbing surface is provided on the tube for selectively absorbing energy having predetermined wavelengths and rejecting other wavelengths. An elongate reflector having a particular locus is located internally of the light and arranged to reflect light received through the transparent surface onto the tube at a concentration ratio which is the ratio of the transverse width of the upper transparent surface to the outer circumference of the tube. The locus of the reflector surface is the shape required to ensure that all incident rays received through the upper transparent surface within the acceptance angle .theta. determined by the equation C=1/sin .theta.

Abstract: A multi-purpose solar energy collector is disclosed. The collector is a flat plate type of collector that is designed to heat either air or water, or both, and is portable so that it can readily be moved from one place to another. In the air heating mode, the collector is ideally suited for drying grain. After the grain drying season, the collector can be converted to the liquid heating mode to heat agricultural process water or domestic water, for example. In the combined air-liquid heating mode, the collector can be used to provide both heated air and heated liquid.

Abstract: A surgical cutting instrument includes an electrically heated cutting edge and an automatic control system for maintaining the cutting edge at a constant high temperature for sterilizing the blade, cutting tissue, and cauterizing the incised tissue to reduce hemorrhage from the cut surfaces of the tissues (hemostasis).

Abstract: A suction control device for an endoscope comprises an outer tube assembly having one end connected to the proximal end of the endoscope and an inner tube assembly coaxially inserted into the outer tube assembly. The inner tube assembly leads an elongated medical instrument therethrough to a channel in the endoscope. An air chamber is defined between the outer tube assembly and the inner tube assembly and communicates with the channel in the endoscope and with a suction pipe fixed to the outer tube. The proximal ends of the inner tube assembly and the outer tube assembly are covered with a flexible cap of a flexible material which is provided with an air inlet communicating with the inner tube assembly and another air inlet disposed near the first air inlet for communication with the air chamber such that both air inlets can be simultaneously blocked by a finger cushion.

Abstract: A sealing device for an endoscope intended to effect sealing between an endoscope guide hole and an operating wire inserted thereinto is set in a medical instrument-leading chamber provided in a distal end portion of an endoscope, and is formed of a substantially hollow cylindrical or trumpet-shaped elastic member. One end of the sealing device is hermetically connected to a wall of the medical instrument-leading chamber to which the endoscope guide hole in the distal end portion is opened. The other end of the sealing device is also hermetically connected to the intermediate point of that portion of the operating wire which projects into the medical instrument-leading chamber from the endoscope guide hole, the operating wire being used to turn a rotary member in order to define the direction in which the forward portion of the medical instrument is to be directed in a body cavity.

Abstract: An apparatus for removing a foreign matter from the human body cavity includes a sheath to be inserted into the body cavity, a foreign matter trapping section and a device for selecting the flexing length of the flexing portion of the sheath. The sheath is made of a flexible material, and the foreign matter trapping section comprises a ring member disposed at the front end of the sheath and trapping wires extending through the lateral side wall of the sheath with their corresponding ends connected to the ring member in circumferentially spaced relation and their other ends individually movable longitudinally of the sheath. By individually operating the trapping wires a foreign matter within the body cavity can be positively caught by or held within a cage defined by the trapping wires. The flexing length selection device can properly adjust the flexing length of the flexing portion of the sheath to be inserted into the body cavity.

Abstract: A device for applying compressive pressures against a patient's limb from a source of pressurized fluid. The device has an elongated pressure sleeve comprising a pair of flexible sheets of fluid impervious material having a pair of side edges, and a pair of end edges connecting the side edges. The sheets are connected together along lines defining a plurality of separate laterally extending inflatable chambers disposed longitudinally along the sleeve, and defining a pair of opposed flaps adjacent one of the side edges extending longitudinally along the sleeves. The flap of one of the sheets has a plurality of openings spaced longitudinally along the flap of the one sheet. The sleeve has a plurality of conduits, and a plurality of connectors secured to the one sheet and connecting the conduits in fluid communication with the chambers, with the conduits extending from the connectors through the flap openings of the one sheet and between the flaps toward one end edge of the sheets.

Abstract: An improved foot massage device having a plurality of rotatable balls forming a generally convex surface. The balls are mounted on parallel bars in turn supported in a frame suitable for placement on the floor. A detachable electric vibrator is mounted within the frame to impart a vibrating and massaging action to the balls through the frame. The user merely places his foot upon the massager and moves the foot back and forth to have a gentle massaging and vibrating action imparted to the foot. Mounted on the frame is a generally vertical conical spindle that is rotatable and formed to impart the massaging and vibrating action to the arch of the foot when placed in contact with the spindle.The vibrator is conveniently detachable from the underside of the foot massager. Attachable to the vibrator are a general massage attachment and a special spinal roller attachment.

Abstract: A reciprocal cardiac compressor is provided for cyclically compressing a patient's chest. The cardiac compressor includes a resuscitator for ventilating the patient's lungs. A first internal electrode is positioned in the esophagus of the patient with an esophageal-pharyngeal airway. The resuscitator ventilates the patient's lungs through the esophageal-pharyngeal airway. The cardiac compressor includes a compressor pad positioned anterior to the patient's heart for compressing the patient's sternum and heart. An external electrode is disposed on the face of the compressor pad for compression between the compressor pad and the patient's sternum. A cardiac defibrillator is connected between external and internal electrodes for establishing a defibrillating electric current therebetween. A monitor is connected to the external and internal electrodes for monitoring the electrical activity of the patient's heart.

Abstract: A brace is provided for treatment of acromioclavicular dislocations. The brace includes a bandage member or body swathe which encircles the thorax and the involved upper arm, a resilient force focusing member or shoulder pad located atop the distal end of the clavicle, and reduction straps disposed between said members which operate through semblant pulleys to afford immobilization of the acromion and a multiplied reductive force on the dislocated clavicle whereby to hold the acromioclavicular joint in location.

Abstract: Disposable contraceptive intravaginal cervical barriers of one, two, three, four, or five layers in the form of standard pessaries with at least one layer impervious to the passage of sperm, with a medicament such as spermicide, germicide, or an abortion inducing agent either impregnated into a foam plastic layer or in the form of a layer of gel or powder, said medicament being activatable upon contact with an aqueous solution.Methods of producing disposable contraceptive barriers either as a wet foam plastic method wherein medicament is added to liquid foam and the resulting mixture is formed in a mold with any subsequent layers then added, or as a dry foam plastic method wherein layers including a layer of medicament in the form of a gel or a powder are superposed in sequence and formed in a die.

Abstract: An intrauterine contraceptive device and method of manufacturing the same including a separately formed elongate body member including a lower body portion and an upper, reduced diameter body portion and a separately formed transversal member removably affixed to the upper end of the reduced diameter body portion. Prior to affixing the transversal member on the body member, a copper helical member is located over the reduced diameter body portion. A connecting member may be provided on the transversal member to facilitate connection thereof to the body member.

Abstract: A tongue holding device incorporating an upper and lower clamp arms each terminating at the distal end thereof in an upper and lower clamp for contacting, grasping and holding the tongue of an unconscious person during the procedure of resuscitation and artificial respiration. An upper and lower stop each extend from a different one of the clamp arms for contacting the outside of the person's mouth in order to limit the distance the apparatus may be dragged by the clamped tongue into the mouth. A U-shaped spring contacts the outer surface of each of the clamp arms to urge the arms, and therefore the clamps, toward one another to grasp and hold the tongue therebetween. A tubular extension is formed integrally with the U-shaped spring to permit the attachment of a hose for supply of air, oxygen and/or other gases to the unconscious person.

Abstract: A porous shaped article adapted for medicinal use is disclosed which comprises a porous regenerated cellulose the entire surface of which is covered with a coating comprising a hydrophilizingly effective amount of at least one wetting agent and a substantially water insoluble chemically modified cellulose ether which is crosslinked carboxymethylcellulose or a reaction product of a partially etherified cellulose and a chemical modifying agent which is capable of reacting with the free hydroxy groups of the etherified cellulose.The articles are coated by first impregnating same with a cellulose ether solution and then treating the impregnated article with a solution of the modifying agent. The wetting agent may be added to either of these steps.The coated articles retain a high absorption capacity for liquids, yet do not release any substantial amounts of turbidifying impurities into a surrounding liquid and therefore are especially suited for medical uses.

Abstract: A nebulizer for forming a liquid mist in a stream of gas. The nebulizing chamber carries a liquid suction conduit adapted to communicate with a supply of liquid below the nebulizing chamber. Accordingly, as suction is exerted on the nebulizing chamber, for example, by a patient breathing in, liquid is drawn upwardly into the nebulizing chamber through the suction conduit. When the liquid reaches a predetermined level it enters into the nebulizing apparatus of the device, with the result that nebulization only takes place at a predetermined minimum level of suction.

Abstract: An airway for insertion into the mouth and pharynx for assisting intubation comprising an elongate body having a straight section joined to a curved section and a face plate secured to the straight section at its free end. The body of the airway has an elongate U-shaped central channel open at the top and a pair of elongate open-sided U-shaped channels on either side of the central channel. The upper defining wall of one of the open-sided channels has an opening therein through which a tubular member inserted in the channel may be guided for accommodating suctioning of the nasopharynx. A tubular member may be intubated in the other side channel for simultaneously suctioning the hypopharynx.

Abstract: An intravenous set with a volume limiting chamber for precisely controlling the volume of parenteral solution administered to a patient and a drip chamber for determining the parenteral solution flow rate. The volume limiting chamber has a membrane valve which when wet will pass parenteral solution but will not pass air at normal intravenous administration pressures. The drip chamber has an air vent so that air can be vented to the drip chamber to lower the liquid level whenever the level is so high that the flow rate cannot easily be determined. The air vent can also be used to vent air from the drip chamber as an aid in priming the drip chamber.

Abstract: A bag for storing blood platelets consisting of a sterilizable, flexible closed polyolefin container having at least two inlets at the top thereof forming part of said closed container, each of the inlets being hermetically enclosed by a bag-like protective closure that is integral with the bag and formed by heat-sealing oxidized surfaces of polyolefin so that the seal is peelably separable to expose each of the inlets. There is further provided a burstable seal below at least one of the inlets.

Abstract: An intravenous catheter assembly for use in the administration of fluids to a patient includes a compressible, flexible hub having a bore therethrough. One end of the bore is adapted to receive a hollow tube such as an intravenous catheter so that fluid is flowable through the bore and the tube. A pair of generally oppositely extending wing sections is connected to the hub, at least one of the wings being hingedly connected to the hub to allow that wing to fold over the hub. On the hingedly connected wing is a pinching protuberance for contact with the hub when the wing is folded thereover whereby, in use, the folded wing urges the protuberance against the flexible hub causing it to collapse and occlude the bore and thereby restrict fluid from passing therethrough.

Abstract: There is disclosed herein a combination stopper for effecting an air-tight seal with the barrel of a syringe to protect the contents from contamination. The stopper is adapted for use with either the luer tip or a needle attached to the end of the syringe barrel. The stopper includes an elongated frustoconically-shaped main body portion having oppositely disposed end walls, and the end wall at the large-diameter end of the main body portion has a generally planar and continuous surface. An elongated frustoconically-shaped luer-receiving nipple is integrally formed with and extends from the small-diameter end wall of the main body portion, with the free end of the nipple being inwardly recessed. The luer-receiving nipple is shaped, sized and constructed to receive and seal the syringe luer tip.

Abstract: A hypodermic syringe which is self-injected has a substantially T-shaped frame of which the stem depends from the top portion to comprise a handle and a syringe carriage slides along said top portion initially by means of a tension spring. A sear holds the carriage retracted against the spring but, when released, the spring shoots the syringe and carriage forwardly a limited distance adequate to inject the needle of the syringe into flesh. A finger-operated trigger, of which two embodiments are provided, when pushed inwardly into the handle actuates a sear release during the short initial movement of the trigger and continued movement thereof moves a slide forwardly along the top of the frame against the outer end of the syringe plunger by means of motion-multiplying means to provide greater movement of said slide for a much lesser movement of said trigger.

Abstract: Improved reinforced devices which can be retained in the vagina during intercourse, deliver spermicidal surfactants and provide contraceptive benefits.

Abstract: Disclosed is a device advantageously usable for dental therapy and examination, which is an elongated bundle of axially extending fibers. The elongated bundle is tapered at one or both of its ends, and the fibers are bonded to each other in places along their lengths so that the fiber bundle is coherent and the fibers define capillary passageways therebetween.

Abstract: A tampon inserter is disclosed of the type comprising an outer cylindrical insertion tube containing a compressed tampon in its proximal end and an inner plunger or piston axially movable within the outer tube for ejecting the tampon out of the proximal end of the insertion tube into the vagina. The outer insertion tube which is rotatable about the plunger is provided with (a) an outwardly extending annular ring to control the depth of insertion of the inserter and (b) an inwardly directed key or finger which depending upon the degree of rotation of the insertion tube about the plunger will extend into one of a plurality of elongated slots of various lengths positioned in the walls of the inner plunger which (slots) control the length of travel of the plunger and thereby provide a means for varying the depth of insertion of the tampon.

Abstract: A urine collection device for women comprising a one piece generally funnel shaped rigid collection means having a flanged wide orifice which orifice has flanged lip on the upper side thereof forming a seat thereon; sealant composed of a layer of a double adhesive faced layer of body adhesive mounted in the seat; the upper surface of the flanged wide orifice containing the sealant being shaped to fit within the contours of the permineum cavity with the external urethral orifice of the wearer being in alignment with the wide orifice of the collector and the sealant means being in contact with the vestibular tissue to prevent substantial leakage of material from between the tissue and the sealant. In a preferred embodiment of the urine collector a pommel formed by the lip and rising away from the collection to enhance positional stability, alignment and further prevent leakage. The whole orifice can cover both the urethral and vaginal orifices to collect discharges therefrom.

Abstract: An artificial intraocular lens system is provided with posterior and anterior tabs adapted to receive and hold a pin substantially perpendicularly therebetween. Said lens system allows for the insertion and affixing of the lens in the eye without the use of sutures and without requiring incisions in the iris to be made by the surgeon. Also disclosed is a tool for insertion of a lens system into the eye.

Abstract: An improved insufflating device particular adapted for use in intrauterine surgical procedures, and similar applications. The device is characterized in the provision of a first hollow shaft having an open distal end through which the barrel of an endoscopic or cystoscopic device is passed. A first inflatable balloon surrounds the shaft and serves to distend the lower portion of the uterus. A second balloon is mounted upon the distal end of a second hollow shaft fixed to the inner surface of said first shaft, and serves to distend the upper portion of the uterus, leaving a clear medially disposed circular area affording access to the lumen of the fallopian tubes for cauterization or other surgical procedure.

Abstract: A method and a surgical stapling instrument for the stapling together of the free ends of two hollow organs. The instrument comprises an elongated tubular body, a base unit concentrically connected to the body and a head unit mounted to the body and concentric therewith for relative movement with respect to the head unit over a range wherein the inner end thereof is spaced apart from the outer end of the base unit and wherein the inner end of the head unit is substantially adjacent to the outer end of the base unit. Holding elements are mounted on the base and head units and project outwardly from the outer and inner ends thereof respectively to extend between the base and head units and are disposed inwardly from the outer periphery of the ends of the base and head units for holding the free ends of the hollow organs inwardly of actuatable stapling and cutting mechanisms to maintain the free ends in position on the base and head portions while the base and head units are moved towards one another.

Abstract: A catheter, preferably a balloon-type catheter, is disclosed in which the catheter shaft is made of a thermoplastic material and thus may be extrudable, the shaft consisting essentially of (a) from 40 to 70 percent by weight of an elastic composition which comprises: from 50 to 99.5 percent by weight of a block copolymer having thermoplastic rubber characteristics with a central, rubbery polyolefin block and terminal blocks of polystyrene, and optionally including up to about 45 percent by weight of polypropylene, plus from 0.5 to 10 percent by weight of a cross-linked organic silicone elastomer; and (b) from 30 to 60 percent by weight of a hydrophobic oil-type plasticizer to provide the desired degree of softness to said elastic composition.

Abstract: A retaining member for a conduit including a catheter having a shaft, a side arm extending from the shaft, and valve means on the side arm actuatable by contact. The retaining member has a first clip member for releasable attachment to the conduit, and a second clip member to releasably receive the catheter side arm and retain it in place relative the conduit. The second clip member has an outer tapered end for placement in the valve means and actuation thereof.

Abstract: An obstetrical instrument for rupturing an amniotic membrane for release of amniotic fluid within the membrane to facilitate the birth of a baby contained therein. The device includes a surgical glove. A hook member is bonded to the side of the long finger member, next to the index finger member and in the distal portion. The hook member has a hook on one end and is bonded at a single point at the other end to the glove. In the normal condition, the hook member is wholly contained between the two fingers. To extend the hook member for rupturing, the index finger rotates the hook member a short distance to expose the hook below the palm portions of the fingers.

Abstract: Pulses produced substantially in Poisson's distribution are counted and the information relating to the counted pulses is displayed. In order to correct the non-linearity of the count rate characteristic of the counter apparatus, a dead zone of time is established during which pulses are not counted. This dead zone is established by the action of at least one circuit including two retriggerable monostable multivibrators series connected.

Abstract: A system is disclosed having a portion permanently implantable beneath the skin to perform in vivo measurements, such as Doppler ultrasonic blood flow velocity measurements. Measurement information is transmitted out through the skin by means of ultrasonic vibrations radiated by one piezoelectric crystal and received by another. Power is transferred into the implanted portion of the system at an audio frequency by inducing current in an implanted coil.

Abstract: In combination with a pulse transducer characterized by a source of light and a detector for light reflected from blood vessels of a living body, to provide heart signal consisting of a modulated dc signal voltage indicative of the pulse rate for the body, an artifact signal resulting from a reflection of light from the skin of the body, which includes both a constant dc signal component and a modulated dc signal component the amplitude of which is greater and the frequency of which is less than said heart signal, a signal attenuator circuit including an operational amplifier for canceling said artifact signal from the output signal of the pulse transducer.