151 results about "Intravenous Catheters" patented technology

The present invention is directed to a valve assembly in an intravenous catheter that facilitates the administration of fluid to a patient through the intravenous catheter by a needleless device. The valve assembly of the present invention contains means for providing a positive displacement of fluid from the catheter at a time when a needleless device is removed from the valve assembly following its connection to the valve assembly.

A needle safety device for an intravenous catheter apparatus that includes a base capable of receiving a needle into opposing jaws attached to the base and capable of being influenced by the needle. The jaws move between an expanded position which interact with an obstruction within a wing housing of the intravenous catheter apparatus. The jaws permit relative movement of the needle with the base when expanded, close around a needle tip as it passes the jaws, and prevent relative movement of the needle with the base when the jaws are collapsed. The needle of the intravenous catheter apparatus may then be safely disposed with the needle tip within the needle safety device.

A catheter device is disclosed which the hypodermic needle used for insertion is retracted into a protective sheath and left in place during use. An IV fluid flow path is provided that is blocked by the hypodermic needle prior to retraction but is opened by the retraction of the needle from the catheter. The insertion hypodermic needle is not discarded separately but only after the use of the whole catheter device to inject fluids.

to protect against accidental needle prick a catheter and insertion device are provided wherein the needle is retractable within the device after insertion of the catheter. The device comprises a hollow barrel or tube of semi-rigid plastic material into which the needle can be retracted after use. The barrel includes a resealable closure at the insertion that opens to allow passage of the needle and catheter and closes to reseal the barrel when the needle is retracted. A cap is provided that covers the barrel to further seal the device after use.

An intravenous catheter insertion device is disclosed to include a barrel, which has a body and a stop wall, a deformable portion extending from the body, a retainer connected with the deformable portion, and a press portion for pressing by the user to deform the deformable portion. A needle set, which has a cylindrical needle holder, a needle fastened to the needle holder at the front side, a springy stop portion extending from the needle holder, and a retainer connected with the needle holder near the front end of the needle holder. And a spring member, which is mounted around the needle set inside the barrel, and has a first end stopped against the stop wall of the barrel and a rear end stopped against the springy stop portion of the needle set.

A catheter housing assembly having a housing, a needle assembly with a rigid portion and a flexible portion, a recoil device positioned in an interior area of the housing for coiling the flexible portion of the needle assembly therearound, and a trigger connected to the housing so as to retract the rigid portion of the needle into the interior area of the housing. The rigid portion of the needle assembly extends tangentially outwardly of the housing. The flexible portion of the needle assembly has a bead, a flexible line extending through the bead, a first rigid spacer connected to the rigid portion of the needle assembly and a plurality of additional rigid spacers interposed in jointed relationship between the bead and the first rigid spacer.

An intravenous catheter anchoring assembly is disclosed and includes a patient-contacting membrane, a platform, and a retaining strap for securing a catheter or tubing of an administration set to a patient. The strap is attached to the platform with adjustable pull-tabs that permit a variety of catheter shapes and sizes to be secured. The strap is also elastomeric so that the strap is stretchable and thereby grabs the secured catheter. The strap and platform further define a plurality of passageways that permit the catheter to be secured in a plurality of non-aligned directions.

A preemptive bandaging device is presented for the facilitation of intravenous catheter placement and anchoring. The bandage of the present invention includes a frame of bandage base material and a hingedly attached door of a thin bandaging film, a layer of carrier paper to serve as a deployer, and an optional bandage base flap or island for integrating the present invention with certain tube and catheter stabilization devices. The dressing is anchored to the skin so as to frame the I.V. site. The bandage features anchors for I.V. tubing and is placed so as to frame the I.V. procedure site. Once the catheter is placed, deploying the door covers and secures the tubes and the catheter with a thin film of clear bandaging material.

Safety intravenous catheters (IVCs) are disclosed herein having a catheter hub with a catheter tube, a needle with a needle hub, and a needle guard. The needle guard is configured to be positioned at least partially within an interior space of the catheter hub and is retained thereto by mechanical engagement between the two. Following removal of the needle from the catheter hub, the needle guard is configured to disengage from the catheter hub and attach over a tip of the needle to shield the needle tip from inadvertent needlesticks. The needle guard having an angled end section configured with a length and a width to retain the needle tip within a tip holding space behind the angled end section.

A device for preventing blood leakage during use of an intravenous catheter and needle using a stopper made of a material that is air permeable when dry; upon exposure to blood or other liquids bercomes rapidly liquid impermeable; is non-toxic and validated to use on humans; is inexpensive; is stable and withstands normal sterilization procedures such as heating and ionizing radiation; and is flexible and able to seal the hole when the needle is removed from the IV catheter during the cannulation process.

An intravenous catheter device and system includes: (a) a medical tubing connector at a first end of the intravenous catheter device; (b) a length of flexible, non-kinking, supported medical tubing, a first end of the non-kinking tubing being connected to a first end of the medical tubing connector; (c) an intravenous catheter portion having a first end attached to a second end of the non-kinking tubing, the non-kinking tubing extending between the intravenous catheter portion and the tubing connector; and (d) a cylindrical-shaped cuff attached to a first outside end portion of the intravenous catheter portion, and a second outside end portion of the non-kinking tubing; wherein a central channel of the intravenous catheter portion is in fluid communication with a channel of the non-kinking, flexible tubing when the intravenous catheter device is in use. This simplified abstract is not intended to limit, and should not be interpreted as limiting, the scope of the claims.

The invention herein describes an intravenous catheter assembly, a system for controlling fluid flow in catheter assembly and a method for manufacturing catheter assembly, wherein the catheter assembly having features to enable selective activation of fluid flow through the catheter assembly is disclosed herein. A septum is placed within the catheter adapter of the catheter assembly and includes a pathway that is closed prior to being biased open via a septum activator also positioned within the catheter adapter. A plurality of air vent channels is interposed between the septum and the inner surface of the catheter adapter to permit flashback of blood during insertion of the catheter into a patient. The septum activator is advanced through the pathway of the septum as a coupler is attached to a proximal opening of the catheter adapter.

The invention includes a barrel, a needle assembly, a catheter, a stopper and a vacuum generator. The needle assembly is disposed in the barrel and has a needle, a needle hub and a needle piston. The needle piston is fastened onto the needle hub. The catheter is axially connected onto the needle hub and passed through by the needle. The stopper is operably disposed at the first end of the barrel and normally stops the needle hub from moving. The vacuum generator has a plunger and a vacuum piston mounted on an end thereof. The vacuum piston is slidably received in the barrel and normally abuts against the needle piston, and the plunger protrudes from the second end of the barrel. The needle assembly will be pulled and retracted in the barrel when the plunger is pulled outward and the stopper releases the needle hub.

A skin puncture device for use as an intravenous catheter or blood collecting needle set is provided with a mechanism for protection against needle injury and access to fluid passageway during insertion. The assembly includes a flexible extension tube connected to the proximal end of the needle housing for use in difficult insertion sites. The extension tube provides access for fluid injection so that the passageway and needle can be filled with fluid prior to needle/catheter insertion, allowing diffusion of blood to provide evidence of successful venipuncture and allowing the infusion of small amounts of fluid into the vein to facilitate catheter advancement. The locking mechanism consists of two apertures in the needle housing and two pairs of needle guard locking tabs which selectively engage when the needle guard is pushed forward to its fully extended position upon completion of insertion or blood drawing, encapsulating the length of the needle.

A protective cover or patch for covering and securing a catheter at the site of insertion of the needle into the patient's skin includes a single piece cover having a portion disposed about the perimeter of the patch bearing an adhesive coating and adapted for securement to a patients skin in the vicinity of the site of insertion, a bulbous chamber disposed inwardly of the perimeter portion, and a connecting portion disposed between the first portion and the chamber portion, the chamber portion defining a chamber for receiving one end of the catheter and extending substantially diametrically from one side of the perimeter to the other, and catheter securing means carried by the chamber portion. The catheter securing means of the protective patch includes catheter engagement means at one end of the chamber opposite to the insertion site, and is capable of resiliently engaging the catheter tubing. The catheter securing means of the patch further includes resilient tubing engagement elements positioned on opposite sides of the chamber. The chamber of the protective patch includes a roof portion raised above the plane defined by said perimeter of the patch, and the catheter securing means located opposite the insertion site comprises at least one end wall depending perpendicular to the chamber roof and being divided into two separated portions which together cooperate to resiliently and frictionally engage and secure said catheter.

An intravenous catheter device is provided which includes a catheter adapter having a fluid chamber, a needle adapter being slidably positioned within the fluid chamber, the needle adapter supporting a base of an introducer needle and a terminal end of a section of intravenous tubing such that a fluid pathway of the introducer needle is in fluid communication with a fluid pathway of the section of intravenous tubing. Following catheterization, the needle adapter is slid to a preferred proximal position whereby a sharpened tip of the introducer needle is shielded within a catheter of the intravenous catheter device, or a portion of the fluid chamber of the catheter adapter. When in the preferred proximal position, fluid communication between the catheter and a section of intravenous tubing is facilitated via the hollow body of the introducer needle.

Apparatuses and methods for holding and supporting an intravenous catheter are disclosed, wherein the catheter support apparatus is adjustable and can be removed easily and rapidly. The catheter support apparatus includes an elongate member comprising a first end, an opposed second end, and a central portion located between the first end and the second end; a foldable strip member attached to the first end of the elongate member and adapted for movement between an open and a closed position; an attachment element adapted for removeably securing the second end on the elongate member to the inside surface of the strip member; and a closure element adapted for removeably securing the strip member in a closed position wherein the inside surface of the strip member is adapted for slidably engaging and supporting a portion of the exposed segment of the catheter.

The invention discloses a security-type venous indwelling needle. The security-type venous indwelling needle comprises an indwelling needle catheter assembly, a needle tubing assembly and a solution infusion joint assembly, and is characterized in that the catheter assembly comprises an indwelling needle catheter and a catheter base connected behind the indwelling needle catheter; the needle tubing assembly comprises a notch needle tubing and a needle bed, wherein the front part of the notch needle tubing is provided with a side notch, a notch steel needle is inserted in a catheter and the catheter base; the tail part is provided with the needle bed which is exposed out of the catheter base; a plastic joint matched with the inner wall of the catheter base is arranged between the rear part of the catheter base and the needle bed; a needle tip protective stainless steel elastic sheet with a back hook is arranged in the plastic joint; the notch steel needle runs through the needle tip protective stainless steel elastic sheet and the plastic joint and extends in the catheter. According to the invention, the plastic joint is added on the front end of a needle handle, the dangerous needle tip of the front end is packed automatically when the steel needle is pushed out, so that the steel needle with blood after a transfusion is prevented from accidentally injuring doctors or other persons, the possibility of infection of viruses remained on the tip end of the steel needle is reduced, and meanwhile the venous indwelling needle does not pollution the environment.

An intravenous catheter introducing device includes a needle hub inserted into and axially slidable relative to an inner barrel wall surface of a barrel. The needle hub holds a needle cannula and permits the cannula to extend forwardly of the barrel for ready use. A catheter connection assembly is detachably sleeved on a front smaller-diameter wall portion of the barrel and permits a tip end of the needle cannula to project forwardly of a tubular cannula of the assembly. A releasably retaining member includes a retaining hole formed in a rear larger-diameter wall portion of the barrel, and a radially extending engaging peg engageable in the hole. Operation of an actuator mounted on the peg can disengage the peg from the hole so as to permit axial movement of the needle hub for drawing the needle cannula within the barrel.