Abstract: An intravenous catheter comprising an inner return tube (1) having return mouth or tip (2) and attached to the return tube (1) an outer access or draw-off tube (3) having draw-off openings (4), where tube (3) and openings (4) are arranged around and coaxial with the inner tube (1), at least along that part which in use is to be inside the vein (8), whereby the distal end of the return tube (1) extends beyond the distal end of the access tube (3), the distance between the return mouth (2) and this distal end preferably being at least twice the width of an approved stasis band.

Abstract: A catheter having an elongate body including a central lumen adapted to slidably receive a therapeutic catheter. The catheter includes a soft tip adapted to lodge in the ostium of the right coronary artery. The elongate body is formed near the distal end to impinge against the wall of the aorta opposite the ostium of the coronary artery.

Abstract: The invention relates to an apparatus and method for limiting the pressure of inflation fluid injected into a drug delivery catheter balloon, while permitting continuous and uninterrupted flow of such fluid to the balloon. The apparatus includes an elongated hollow housing having a fluid entrance, a fluid exit and a bore extending therebetween which forms an interconnecting chamber and passageway. A piston and piston shaft assembly is disposed inside the housing and is longitudinally movable within the chamber. The piston and piston shaft assembly is biased against the fluid pressure of the fluid entering the housing by a spring. The piston shaft has a distal end which extends toward the passageway inlet. As the incoming fluid pressure increases and approaches the predetermined maximum pressure level of the apparatus, the piston shaft distal end moves within the chamber against the biasing force of the spring toward a position adjacent the passageway inlet.

Abstract: The present invention is a single use injector device for injecting parenteral medications which operates by hand force. The injector device has a plunger section and a base. As hand force is applied to a moving portion of the plunger section, break tabs or a snap ring resist its motion toward the patient's skin surface. The break tabs or snap ring release abruptly as the hand force reaches a snap point. The motion of the moving portion then drives the medication through the skin surface and into the body of the patient. If the medication is in liquid form, the actual injection may be carried out through a hollow needle attached to the plunger section. Alternatively, the suddenly increased pressure of the medication at the snap point may be used to form a liquid jet for needleless injection. Part or all of the medication may be contained in a glass needle which dissolves in the body after injection. The injector device requires little training to use, reduces perceived pain, and improves injection safety.

Abstract: A sterile solution infusion apparatus having a first line to intake infusion liquid and transport it via two anti-syphon one way valves to an output end and having a branch intake line to the first line between the anti-syphon one way valves to allow the input under pressure of a different infusion feed.

Abstract: A modular retractable spring cannula blood collection device that is comprised of a needle cannula with a rigid first end and a biased spring formed at the second end. The second end of the needle cannula that is formed into a biased spring needle cannula is contained in an elongated hollow tube with a first end and a second end wherein the first end has a cannula support tunnel and a hub is formed at the second end. The second end of the biased spring needle cannula is fixed to the second end of the elongated hollow tube and a latching means is fixed to the spring needle cannula and wherein the latching means is fixed to a latch release near the first end of the elongated hollow tube thereby supporting the first end of the spring needle cannula and thereby further restraining the biased spring needle cannula within the elongated hollow tube.

Abstract: Guidewire-deliverable devices and methods of using the devices for separating adjacent layers of tissue and for delivering a surgical prosthesis to an operating site. A guidewire-delverable cannula provides an elongate window for accessing the operating site with a tissue-separating device. The tissue-separating device may include one of several types of an inflatable balloon or a tissue-dissecting member. The tissue-separating balloon may simultaneously deliver the prosthesis during tissue separation and may further be detached to remain with the prosthesis over the operating site. Alternatively, the prosthesis may be separately provided after the adjacent layers of tissue have been separated.

Abstract: A disposable diaper includes a liquid-absorbent core which is formed by laminating a fibrous layer principally comprising fluff pulp fibers with a particle layer principally comprising superabsorptive polymer particles. The core is divided along longitudinal lines of the diaper. Each pair of adjacent core divisions present side walls opposed to each other and the particle layer is partially exposed in these side walls.

Abstract: A safety needle cannula module in interchangeable combination with a safety syringe and plunger module, wherein the safety needle cannula module is formed with one of a variety of needle cannula sizes and wherein said safety syringe may be one of a variety of syringe sizes. The safety needle cannula module with needle cannula of desired size is attached to a safety syringe module wherein said safety syringe is a desired size. After medication is injected into a body with the safety needle cannula and the safety syringe, the safety syringe module reacts with the safety needle cannula module and further causes said safety needle cannula to be automatically retracted and disposed within the hollow plunger within said safety syringe module.

Abstract: A manifold has a manifold body defining a fluid flow pathway therethrough. The manifold body has a plurality of valves, at least one of which is a check valve. The manifold is coupled at one end to a syringe or other fluid delivery means and to an opposing end to a catheter or other fluid receiving means. By being positioned within the manifold body, the check valve is reinforced and stabilized within the manifold.

Abstract: An implantable system for treating a patient by an implantable electrical transducer and an implantable and rechargeable power source comprising a capacitive energy storage unit. A circuit is provided for recharging the power source without removing the power source from the patient. The power source preferably comprises a capacitor having a rating of at least 0.1 farads fabricated from carbonized phenol fibers.

Abstract: An irrigator (20) useful for surgical and medical procedures. The irrigator includes a handpiece (22) to which a tip assembly (30) is attached. The handpiece (22) includes a drain tube (50) that extends through the body of the handpiece and outside of the handpiece to the complementary suction system. The tip assembly includes a discharge tube (32) that is snap secured into the front of the handpiece and a suction tube (48) that seats in the open front end of the drain tube. A removable splash shield (181) is attached to the front end of the tip assembly. A trigger (44) allows one-handed control of, the position of the handpiece, the on/off state of the irrigator and the rate at which fluid is discharged from the irrigator. A rechargeable power pack (222) can be used to supply the energization current needed to activate a number of different handpieces at different speeds.

Abstract: An improved structure safety syringe comprised of a barrel having two trapezoidal-shaped tabs, a sleeve with a guide slot and, furthermore, limit slots extending from the circumferential surface at the two ends of the guide slot and an insertion section is formed at the inside end of the limit slot, wherein utilizing the engagement of the tabs and the insertion section enables the positioning of the barrel and the sleeve, and a plunger having a protective cap at the force application end that can be broken off at an appropriate time. When the protective cap is broken off and, furthermore, inserted into the other end of the sleeve, the objective of positioning is achieved and, furthermore, ensures that the hypodermic needle is not exposed.

Abstract: A safety syringe that is characterized by that a plunger thereof has an elastic stopper fitted around a neck portion of the plunger near a front end thereof. When the plunger is fully pushed forward in a barrel of the syringe, the stopper slightly deforms to allow the plunger to move forward a little further, so that all medical liquid in the barrel is injected into a patient's body. The safety syringe is also characterized by that an elastic catch hook is provided at the front end of the plunger and a catch rib is provided around a rear inner end of a locking tip that is fitted to a front end of the barrel for a needle to connect thereto. When the plunger is further pushed forward in the barrel, the catch hook is moved beyond the catch rib and retained in the locking tip by the catch rib. Whereby, simply pulling the plunger backward could directly pull the locking tip and a used needle backward into the barrel to avoid injuring others.

Abstract: A tamperproof retractable non-reusable syringe has a one piece hollow outer body with a barrel for a slidable plunger, a transition zone and a smaller diameter nose portion. An elongated needle holder and spring combination is installable from the rear of the outer body, guided into the nose portion and held by cooperating inwardly and outwardly facing surfaces oriented in the direction of retraction at the most constricted part of the transition zone where the nose begins. The plunger has an opening with a dislodgable stopper for receiving parts of the retraction mechanism. The stopper and the head of the needle holder are of significantly reduced diameter from the injection fluid chamber to resist blowing out prematurely. In one embodiment the head of the needle holder is surrounded by a separable retainer member which is slidingly removed by contact with the tip of the plunger after the stopper is mostly or fully removed to avoid cumulation of force required for retraction after the injection.

Abstract: An elastomeric bladder stored energy type infusion apparatus that can be filled with a medicinal fluid and, after being filled, can efficiently deliver the medicinal fluid to the patient at a selected, adjustable rate. The apparatus includes a built-in dose dialing mechanism which can be preset by the treating physician or health care worker so that a precise volume of the medicinal fluid can be introduced into the fluid reservoir of the device for delivery to the patient.

Abstract: An injection and perfusion device which allows an easy extraction of the needle, with just one hand, and protection of the user by confinement of the needle. The needle support includes a base plate (1) with rebated guides (2) into which slides an attachable extraction device made up of a support block (6) into which is inserted a piston (9) which has a longitudinal groove (10) able to contain the vertical part of the angled needle (4).

Abstract: An injection site for passing a needle into an enclosed space surrounded by a wall, typically defined by a tubular section incorporated in a tubular set. An aperture in the wall communicates between the enclosed space and the exterior, having an elastic, needle-pierceable member such as a plug occluding the aperture. The plug is exposed to the exterior on one side and defines a route of needle access through the plug and aperture to the enclosed space. A first flange is positioned adjacent to the plug and extends transversely outwardly from the plug. The first flange carries a second flange, which extends longitudinally relative to the plug, and is spaced transversely outwardly from the plug to define a catch area for needles, which catch area surrounds the plug.

Abstract: There can be provided a sealing stopper for a syringe, having very high sealing property and sliding property, and a prefilled syringe using this sealing stopper and capable of preserving a medicament for a long time and operating in easy and precise manner during injecting. This syringe is also excellent in sanitary and operating property during a step of formulation or preservation of a medicament. In this sealing stopper for a syringe, a surface of the rubber body is laminated with a tetrafluoroethylene resin film or ultra-high molecular weight polyethylene film having an average roughness Ra on the central line of the surface in a range of at most 0.05 .mu.m and a kinematic friction coefficient of at most 0.2.

Abstract: A phantom mare includes a housing having inlet and outlet ends with a bore therebetween. A bladder surrounds the bore. Upon injection of a warmed fluid into the housing, the fluid is captured between the bladder and bore surface to distend and warm the bladder. Upon stallion penetration in the outlet end the discharged semen is directed to a collection container at the outlet end. A valve assembly regulates a user discharge of the fluid from the housing so that the distended bladder returns to a non-distended position to preclude irritation on the stallion upon withdrawal. The removal of heat of the discharged fluid from the housing reduces the possibility of damage to the deposited semen.