Abstract: A syringe with needle retraction arrangement is adapted for automatically retracting the hollow needle into a hollow plunger after use so as to prevent the used needle from contacting with anybody. The syringe provides a closure seat at one end of a hollow plunger, wherein when the closure seat is intentionally pushed towards a mounting seat affixed in a mounting portion of a hollow barrel, a pusher member, which is detachably connect with the closure seat, presses a tip head of a hollow needle as well as an O-ring thereon to slide towards a needle hub to compress a compression spring to store a resilient force.

Abstract: A surgical handpiece having two coaxial tubes or channels mounted within a body. The first tube is used for aspiration and is smaller in diameter than the second tube so as to great an annular passage between the first and second tube. The annular passage communicates with a pumping chamber formed between two electrodes. The pumping chamber works by boiling a small volume of the surgical fluid. As the fluid boils, it expands rapidly, thereby propelling the liquid downstream of the pumping chamber out of the annular passage. The electrodes are insulated from each other.

Abstract: A catheter garment for receiving and retaining an indwelling catheter near the exit site on the body. The garment comprises a flexible band member with a middle portion, upper and lower portions defining an inner surface and an outer surface, and end portions with adjustable fastening means e.g. hook and loop means. An elongated pouch for receiving and retaining the external tubing portion is affixed to the inner surface of the garment and places the external tubing portion in close proximity to the patient's body when the garment is being worn. The elongated pouch is made of a rectangular piece of material that is folded over and its longitudinal free edges are sewn together. The pouch is then sewn along its sewn longitudinal edges onto the inner surface of the flexible band member. The elongated pouch has opened ends along opposite sides of the pouch. One opened end is diagonally formed i.e.

Abstract: A multi-diameter, multi-purpose cannula connector for connection to vessels of different sizes and suitable for use in coronary artery bypass graft surgery comprising small flexible cannula with several graduated diameter flanges located adjacent the proximal end is disclosed.

Abstract: An ejection device 1 for the high-pressure ejection of a liquid or a liquid containing solid particles, comprising a pressure chamber 13 to accommodate the liquid therein, which opens into an ejection opening 11 and is delimited by a working piston 5. The working piston 5 is, upon application of an elastic impact on its end facing away from the pressure chamber 13, capable of transmitting a compression wave which may displace the pressure chamber-facing end of the working piston 5 by a predetermined displacement stroke into the pressure chamber 13 so that the volume thereof is reduced. The reduction in volume of the pressure chamber 13 is signicantly smaller than the volume of the pressure chamber 13.

Abstract: The invention concerns a needle arrangement for an injection device (16). It has a hollow needle carrier (10) on which a hollow needle (12) is mounted and which is configured for mounting on the injection device (16). The arrangement has a cap (32) which is displaceable on the hollow needle carrier (10) approximately parallel to the longitudinal extension of the hollow needle (12), is equipped at its proximal end segment with a passthrough opening (42) for the hollow needle (12), and in its proximal end position substantially conceals the hollow needle (12). A compression spring (26) is arranged between the hollow needle carrier (10) and cap (32) in order to displace the cap (32) into its proximal end position. Also provided is a covering cap (66) which surrounds the displaceable cap (32), the hollow needle (12), and the hollow needle carrier (10), and is sealed on its open side by a sealing member (71) that is removable by the user. A needle arrangement of this kind can easily be replaced after an injection.

Abstract: A needle assembly for a medication delivery pen or hypodermic syringe having a usable length of 5 mm (0.197″) that delivers a dose of medication to a proper location in the tissue “strata” or subcontinuous layer without the need for the user or patient to “pinch-up” the skin layer during the injection.

Abstract: The disclosure relates to a device for controlling or adjusting the penetration depth of a needle, specifically designed for application to an injection syringe, comprising an element designed for contacting a person's skin, said contact element including a surface which encompasses, at least partially, the tip of the needle. The contact element is operatively associated with syringe coupling means and comprises a plurality of throughgoing micro-holes passing through the surface.

Abstract: A disposable syringe mainly used in medical treatment facility and formed so that the piston (4) is pulled into the inside of the syringe body (21) with the needle support (6) by pulling out the piston (4) after the locking projection (9) of the piston *tip is inserted into and engaged with the locking hole (70) of the needle support (6) by pressing in the piston (4).

Abstract: A low-profile faceplate assembly for a two-piece ostomy appliance, and a method for manufacturing it, are disclosed. The faceplate includes a wafer of an adhesive skin barrier material and a flexible plastic coupling ring (for detachably coupling the faceplate to an ostomy pouch having a mating ring), and is distinguished by the mounting flange of the coupling ring being embedded within the faceplate.

Abstract: Disclosure of methods and apparatus providing bases for design of compact small bore medical needle retraction safety devices wherein actuators are displaced away from slender needle sheathing bodies to initiate a needle retraction cycle for safely containing a medical needle after use. Such actuation guards against inadvertent acts, such as depression of an actuator, which may result in untimely needle retraction. Four embodiments of the instant invention are disclosed. In one embodiment, needle retracting energy is stored as a medical needle is extended for use and is expended to retract the needle into safe containment. Other embodiments comprise power assist mechanisms which store energy during an initial phase of needle retraction to be used to enhance and assist needle retraction during a needle retraction completing phase.

Abstract: A tamper evident protector cap for a pre-filled syringe or cartridge barrel stoppered by an elastomeric closure. The protector cap securely retains the elastomeric closure during in-line processing, handling and shipment. The protector cap includes frangible brackets which on tampering break away from the protector cap evidencing that product integrity might have been jeopardized and the product should not be used.

Abstract: A system for delivering an anaesthetic-containing fluid to a desired site in a patient includes a catheter for channeling the fluid into a unitary portal penetrating a body. A pump capable of delivering fluid at a constant flow rate is dimensioned to retain sufficient fluid for at least a one-day delivery and is adapted to permit being affixed to the body to permit portability. A fluid line, such as tubing, transports fluid from the pump to the catheter. A kit further includes an introducer needle dimensioned to permit the catheter to pass therethrough. A method of relieving pain at a surgical site postoperatively over an extended period of time includes the steps of inserting an anaesthetic-containing fluid into a pump interior having a capacity sufficient for at least a two-day delivery.

Abstract: A needle point protection sheath comprises a protector tube having a bore for receiving a hollow needle plus a needle hub within the bore. The protector tube has closure cap at one end thereof and has a retention member at the other end to engage an end of the hub, to prevent the hub from passing out of the other tube end. The cap may carry a sleeve having a needle-pierceable wall at its inner end, or a mass of resilient material which is capable of being penetrated by the needle as the cap is closed, to seal the needle tip and thus prevent the spilling of blood residue when a blood collection needle is being enclosed for protection.

Abstract: A safety hypodermic syringe is constructed to include a barrel, a needle assembly, a female connector, a plunger, and a male connector, wherein the female connector is disposed in the front end of the barrel and fastened to the needle assembly, having a rear retaining hole; the male connector is provided at the front side of the plunger and adapted to engage the rear retaining hole upon forward stroke of the plunger, for enabling the needle assembly to be pulled backwards with the plunger and received inside the barrel after the service of the hypodermis syringe.

Abstract: A disposable syringe assembly generally including a cylinder assembly 10, a needle assembly 20, a piston assembly 30, a seal cap assembly 40, a piston stem 50 and handle 60. The cylinder assembly 10 may be engaged with the needle assembly 20 substantially near the needle end of the cylinder assembly 10 and the cylinder assembly may be engaged with the seal cap assembly 40 near the seal cap end of the cylinder assembly 10. The cylinder assembly 10 may further including a fluid region 14 and an air region 15. As fluid is drawn into the fluid region 14 by movement of the piston assembly 30, air is displaced from the air region 15 through a one-way valve. As fluid is discharged from the cylinder assembly 10, a low pressure is created in the air region 15.

Abstract: A catheter includes a manifold and a proximal shaft portion coupled to the manifold. A distal shaft portion is coupled to a distal end of the proximal shaft portion and is flexible relative to the proximal shaft portion. A fiber reinforcement layer is disposed about the distal shaft portion.

Abstract: A balloon catheter which has an elongate shaft with an inflatable balloon connected to its distal end and a manifold connected to its proximal end. The manifold may be fixedly or removably attached to the shaft and includes a barrel with a plunger movably disposed inside it. The barrel has an internal volume of less than 5 cc and an internal diameter of less than 0.25 inches. A pressure transducer may be mounted to the manifold to permit measurement via a sensor tube. A pressure source for a balloon catheter including a barrel with a plunger inside it. The barrel is in fluid communication with the inflation lumen of the catheter and has an internal volume less than 5 cc and an internal diameter of less than 0.25 inches. A pressure sensor may be connected to the barrel with a sensor tube defining a fluid path from the interior of the barrel to the pressure sensor. A lock mechanism may be connected to the barrel to control longitudinal movement of the plunger.

Abstract: A needle guard assembly for a syringe adapted to receive a hypodermic needle assembly. The guard assembly includes a needle guard that is slidably mounted on a needle-supporting hub. The needle guard may be moved from a latched position wherein the needle is fully protected by the guard to a position wherein the injection end of the needle is exposed. The assembly further includes a locking mechanism for permanently locking the needle guard in an extended position over the needle to prevent further use of the needle and to facilitate safe disposal of the assembly.

Abstract: The present invention provides a liquid conveying catheter comprising a collecting tube inserted into an object for sucking a liquid from its tip, a mixing bar extending through the collecting tube, and a drive unit for rotating the mixing bar. The collecting tube has on its inner wall a helical convex to define a helical groove serving as a flow path.