71 results about "IV Infusion" patented technology

An infusion system comprises a first pump device that delivers a first infusate, preferably a medication, to an IV infusion line and a second pump device that delivers a second infusate, preferably a neutral carrying solution, to the IV line. The infusion system also includes a measurement device that determines an amount of undelivered first infusate remaining in a receptacle. Furthermore, the infusion system includes a control system that communicates with the first and second delivery devices and the measurement device to determine an optimum first infusate infusion flow rate based on the determined amount of undelivered first infusate remaining in the system, a predetermined volume of fluid to be infused, and a predetermined infusion time period, and for controlling the first delivery unit accordingly. The present invention also provides methods for infusing a medication into a patient.

The invention of this application relates generally to intravenous (IV) infusion of drugs to patients, and more particularly to aspects of an IV infusion system comprising an infusate cassette and an infusate container. The present invention provides a drug infusion cassette that incorporates a strong vial spike that may be non-metal, a means for sheathing the spike when it is not in use, an anti-free flow device, and other beneficial features such as an air entrainment lockout mechanism, quality assurance tags, stopcocks made of soft materials and means of securing tubing to the cassette with a minimum of individual parts. The drug cassette can be used with an automated spiking mechanism comprising a motorized vial holder that holds a vial. The spike remains sheathed if the drug cassette is not fully engaged with a mating surface of devices such as a pumping unit or a sedation and analgesia delivery system.

A drop sensing device for monitoring intravenous (IV) fluid flow is provided. The device comprises a U-shaped clip mountable on a drip chamber of an IV infusion set. The clip has a light source provided at one side for emitting radiation and a hollow cylinder provided in a through hole on the side opposite the light source. The cylinder includes an aperture of a diameter smaller than an average diameter of fluid drops passing the drip chamber, and an optical sensor mounted on a rear end of the cylinder opposite the aperture, so as to substantially enhance sensitivity of light ray receiving.

A portable infusion monitoring system displays the liquid level and flow rate data during infusion process, as well as gives an alarm for patents and nurses in hospital as the medical liquid in an IV bottle drops to a predetermined low level. This system comprises a set of liquid level sensor, a microprocessor, and a monitor terminal. The liquid level sensor generates an electric signal related to the liquid level inside the IV bottle. The microprocessor analyzes the electric parameters detected from the electric signal, and obtains the liquid level data. The liquid level data are sent to the monitor terminal for display, and an alarm is activated when the medical liquid inside the IV bottle drops to a predetermined low lever. Further functions of the monitor terminal includes an automatic switch to cut off the IV feeding process and send the alarm signal to a nurse station through signal network by wire or wirelessly. Several interference filtering methods are applied to increase signal / noise ratio, and therefore warrant the operation reliability.

A clamp apparatus for selectively occluding a resilient tube to prevent free flow of fluid in the tube. The device comprises a base member to which the resilient IV tube is attached or through which it passes, and a slide clamp that slides relative to the base member and relative to the tube. The aperture in the slide clamp has a relatively open hole at one end, through which the tube passes when the slide clamp is an open position, allowing fluid to flow through the tube. The aperture also has a relatively constricted slot at the other end, through which the tube passes when the slide clamp is in the occluding position, preventing fluid flow through the tube. A deflectable cantilevered locking arm on the base interlocks with a detent on the slide clamp to lock the slide clamp at the occluding position to avoid inadvertent free flow. A release tab that is used to release the locking arm from the slide clamp is located off center to avoid inadvertent activation. The deflectable arm is unstressed when the slide clamp is in either the occluding or the open positions. A stop device prevents over-stressing the release tab when it is moved. In one embodiment, the clamp apparatus may be slid along the IV tube to a desired location.

A passively shieldable needle assembly set is provided for use with a tube holder. The assembly includes a needle cannula, a hub mounted to the needle cannula and a tip guard slidably movable along the needle cannula. The tip guard can be slid into a distal position where the tip of the needle cannula is safely shielded. A collapsible guard drive is mounted to the hub and includes a pair of collapsible leaves extending from the hub to the tip guard. The leaves have a length that enable the tip guard to move into shielding engagement around the tip of the needle cannula, while preventing complete removal of the tip guard from the needle cannula. The leaves are resiliently deformable and can be collapsed onto themselves and onto the hub. The leaves can be retained in their collapsed condition by a packaging cover and subsequently by the grip of a medical practitioner. A mere release of the grip on the collapsed leaves enables the leaves to resiliently return toward an undeflected condition and propels the tip guard distally into shielding engagement around the tip of the needle cannula.

An IV infusion monitoring device is provided to measure and to display, during whole infusion process, the liquid level data including the weight of remaining medical liquid in an IV bottle, the liquid flow rate and the remaining time from the completion of an IV infusion process. It also gives alarm as the medical liquid in an IV bottle drops to a predetermined low level. The IV infusion monitoring system comprises an electric load sensor, a signal processor, a monitor terminal and a power provided preferably by a battery. The load sensor measures the weight of the medical liquid in the IV bottle. The measured signal is then transmitted to the signal processor for processing and generating the liquid level data, which are then sent to the monitor terminal for display. The monitor terminal can also generate an alarm if the liquid level drops to the predetermined value. Furthermore, the monitoring device combines with a server and a plurality of PDA devices to form a communication network so that a nurse can monitor the IV infusion process from a remote location.

The invention relates to a needleless dosing positive pressure connector. The positive pressure connector can be mainly used for liquid injection, gravity transfusion and liquid extraction and is connected with a venous transfusion tube, ductus venosus and the like and started through a luer connector. A rubber plug of the positive pressure connector of the invention is opened to realize the liquid flowing in a single direction and avoid the pollution of particles, micro-fragment and the like caused by needle puncture. When an injector is removed, the positive pressure connector generates a positive pressure to make the liquid inside the positive pressure connector automatically advance and prevent blood from returning to a remaining needle and forming thrombus, so that the blockage of the remaining needle is prevented.

A modular catheterization system includes a catheter retainer having an integral y-site lumen, and a secondary retainer for retaining an additional component in close proximity to the catheterization system. The y-site lumen comprises two fluid paths, where fluid flow through one of the paths is obstructed when no additional component is integrated into the catheterization system.

A clamp apparatus for selectively occluding a resilient tube to prevent free flow of fluid in the tube. The device comprises a base member to which the resilient IV tube is attached or through which it passes, and a slide clamp that slides relative to the base member and relative to the tube. The aperture in the slide clamp has a relatively open hole at one end, through which the tube passes when the slide clamp is an open position, allowing fluid to flow through the tube. The aperture also has a relatively constricted slot at the other end, through which the tube passes when the slide clamp is in the occluding position, preventing fluid flow through the tube. The slide clamp includes a groove for receiving a cooperatively shaped rib on the base member. The groove and rib are configured to guide relative movement between the slide clamp and the base so as to prevent significant lateral movement.

A device for delivering an IV catheter to an IV infusion site is disclosed. The device includes a cylindrical housing adapted to fit into the hand of the clinician. A catheter assembly is disposed in the housing and can be advanced to an extended position and retracted. The catheter assembly includes a needle adapted to be inserted into the vein and the catheter is mounted on the needle to allow the catheter to be removed at will. The catheter assembly is rotated as the needle is inserted into the vein. Preferably the catheter assembly is rotated during the insertion of the needle and catheter. After the needle and catheter are inserted into the vein, the needle is retracted into the housing leaving the catheter in place. The housing and the needle can now be discarded.

A safety type intravenous transfusion retention needle with wings is provided, which comprises puncture assembly, retention cannla assembly, a needle protection cap and a safety casing. The puncture assembly consists of puncture needle wings and puncture needle tubing. The retention assembly comprises a three-way rest, a soft tube, a joint, a sealing member and a retention cannula. The protection casing is a tubular casing, with a lock groove for positioning the root of the puncture wings is provided on the rear end of the casing, in addition, a guiding groove is cut along with the said safety casing length direction from the front end of the locking groove. The front end of the safety casing is connected with the first interface of said three-way rest and the root of the puncture needle wings is set inside of said guiding groove of the protection casing. The present invention can heal the needle in the safety protection casing in the needle tubling pulling out process, which enables the medical care personnel away from the infection of contagious disease due to the puncture accident. The invention has simple and compact structure and low cost.

A portable infusion monitoring system detects the liquid level and flow rate during infusion process, as well as gives an alarm for patents and nurses in hospital as the medical liquid in an IV bottle drops to a predetermined low level. This system comprises a set of liquid level sensor, a microprocessor, and a monitor terminal. The liquid level sensor generates an electric signal related to the liquid level inside the IV bottle. The microprocessor statistically analyzes the electric parameters detected from the electric signal, and obtains the liquid level data including both the liquid level and liquid flow rate. The liquid level data are sent to the monitor terminal for display, and an alarm is activated when the medical liquid inside the IV bottle drops to a predetermined low lever. Further functions of the monitor terminal includes an automatic switch to cut off the IV feeding process and send the alarm signal to a nurse station through signal network by wire or wirelessly. Several interference filtering methods are applied to increase signal / noise ratio, and therefore warrant the operation reliability.

The invention discloses a medical venous transfusion monitor. The medical venous transfusion monitor comprises a detecting circuit and a control circuit, wherein the detecting circuit consists of infrared pair transistors and a voltage comparator. The medical venous transfusion monitor is characterized in that two or more than two groups of infrared pair transistors are arranged, wherein each group of infrared pair transistors is arranged on the same height position of a drip cup; the threshold value voltage is one half the sum of output voltage when the infrared pair transistors mounted on the drip cup are shielded by medical drops and output voltage when the infrared pair transistors mounted on the drip cup are unshielded by the medical drops. A monitoring method comprises the following steps: a), connecting equipment; b), selecting liquid types; c), setting a dripping speed alarm range; d), setting reference dripping speed; e), obtaining existing dripping speed; f) performing dripping speed ultra-limit judgment; g), judging drug flow-empty. According to the monitor and the monitoring method disclosed by the invention, false detection and leakage detection of a conventional transfusion alarm are avoided, whether the current dripping speed and the liquid medicine are emptied or not can be judged, the beneficial effects are remarkable, and the application and the popularization are convenient.

The invention belongs to the field of medical instruments, particularly relates to a self-exhaust and bubble-proof transfusion apparatus, and comprises a bottle plug puncture outfit, a transfusion pipeline, a dripping bucket, a flow regulator, a medicine liquid filter, a water stopping clamp, a conical connector and a venous transfusion needle. An exhaust device is arranged in the dripping bucketand comprises an exhaust seat, an exhaust core and a cover cap. The bottom of the exhaust seat is fixed at the position of a liquid dripping opening at the bottom end of the dripping bucket and tightly matched with the liquid dripping opening, the hollow exhaust core communicated with the dripping opening is arranged in the exhaust seat, a liquid inlet gap is arranged between the exhaust core andthe exhaust seat, a liquid inlet groove is respectively arranged on the lateral walls of the exhaust core and the exhaust seat, the top of the exhaust seat is provided with the cover cap clamped withthe exhaust seat, and the lateral wall of the cover cap is provided with at least one exhaust groove. The transfusion apparatus is simple and reasonable in structure and convenient to operate, and the exhaust device in the dripping bucket can exhaust gas entering a gas-liquid mixture in the dripping bucket and prevent bubbles from being generated. The exhaust groove of the cover cap can avoid retention of the gas. The self-exhaust and bubble-proof transfusion apparatus is convenient and safe to use, fast and reliable.

The invention features methods for treating a patient suffering from muscular dystrophy by administration of umbilical cord blood cells, e.g., by IV infusion.

An IV infusion bag carrier pack is arranged as a substantially hollow, flexible bag having an interior that is divided into two interior compartments by a flexible, heat permeable divider panel, one interior compartment being arranged to receive and confine an IV fluids bag and the other interior compartment arranged to receive and confine the inflatable pressure cuff member of a blood pressure apparatus, whereby an IV fluids bag contained in the first pocket may be selectively pressurized by inflation of the blood pressure cuff contained in the second pocket whereby selectively controlled infusion delivery of IV fluids contained in the carrier pack apparatus may be continuously maintained irrespective of the relative disposition of the carrier pack apparatus and patient during treatment, extrication and rescue in the field, and transport to a medical facility.

An infusate cassette is described for use with an IV infusion system which controls the process of administering a drug to a patient. The cassette and other aspects of the infusion system may include disposable components, external redundant volume tracking, air removal and automated purge and prime capabilities, component removal lockout mechanisms, and / or redundant automated anti-free flow devices. An IV manifold comprising an imbedded high cracking pressure anti-free flow valve is also described for use with the infusion system. The cassette, IV manifold, and other aspects of the infusion system may be provided with quality assurance mechanisms for use with integrated IV infusion.

A safety syringe comprises a plunger, a hollow cylindrical, staged adapter fitted on a forward nose of the plunger, a projection on a circumference of the adapter, a hypodermic needle mounted on a forward end of the adapter, and a sheath for enclosing the adapter and the needle, the sheath comprising a T-shaped groove having a left recess with the projection disposed therein in a non-operating position, a right slot, and an intermediate cross piece in a horizontal portion thereof. The projection slides along the groove for causing the needle to dispense fluid through a forward aperture of the sheath. Also, responsive to again disposing the projection in the recess after dispensing fluid, rotate the adapter to move the projection from the recess to and lock in the slot by passing under the cross piece. The sheath is adapted to couple to any typical syringe plunger or IV infusion set.

The present invention relates to a needleless dosing positive pressure connector. The positive pressure connector can be mainly used for liquid injection, gravity transfusion and liquid extraction and is connected with a venous transfusion tube, ductus venosus and the like and started through a luer connector. A rubber plug of the positive pressure connector of the present invention is opened to realize the liquid flowing in a single direction and avoid the pollution of particles, micro-fragment and the like caused by needle puncture. When an injector is removed, the positive pressure connector generates a positive pressure to make the liquid inside the positive pressure connector automatically advance and prevent blood from returning to a remaining needle and forming thrombus, so that the blockage of the remaining needle is prevented.

The invention discloses a non-damaged needle group for a venous infusion port and a use method. The non-damaged needle group for the venous infusion port comprises a base and a puncture needle assembly, wherein the base is connected with the puncture needle assembly in a matched mode. The base comprises a shell, a soft plug, and a sleeve, wherein the shell, the soft plug, and the sleeve are coaxially arranged. The shell is internally provided with an infusion channel, the infusion channel communicates with a hollow part of the sleeve, and the soft plug is used for blocking an upper opening ofthe shell. The puncture needle assembly comprises a needle seat and a puncture needle fixed below the needle seat. The end of the puncture needle punctures through the soft plug and extends out of thefar-end of the sleeve after passing through the hollow part of the sleeve. On the premise that the non-damaged needle can smoothly communicate with the infusion port, the non-damaged needle group forthe venous infusion port effectively prevents the non-damaged needle from cutting bacteria blocking soft glue of the infusion port during puncturing, the normal use of the instrument is ensured, andthe unnecessary medical accident is avoided.

An IV infusion bag carrier pack is arranged as a substantially hollow, flexible bag having an interior that is divided into two interior compartments by a flexible, heat permeable divider panel, one interior compartment being arranged to receive and confine an IV fluids bag and the other interior compartment arranged to receive and confine the inflatable pressure cuff member of a blood pressure apparatus, whereby an IV fluids bag contained in the first pocket may be selectively pressurized by inflation of the blood pressure cuff contained in the second pocket whereby selectively controlled infusion delivery of IV fluids contained in the carrier pack apparatus may be continuously maintained irrespective of the relative disposition of the carrier pack apparatus and patient during treatment, extrication and rescue in the field, and transport to a medical facility.

A rugged infusion device capable of exerting consistent pressure onto an IV bag for intravenous medical use, wherein said device and said IV bag are surrounded by a rugged outer shell having a proximal and distal parts with respect to the device, said distal part comprising one or more of a flow regulator, a modulator, and a flow meter for regulating, smoothing, and measuring the flow of fluids effused from the IV bag, wherein said rugged proximal parts are capable of absorbing impacts to minimize the force imparted to the rugged infusion device.

A protective sleeve tube for the expendable venipuncture needle is compose dof a sleeve tube body and a handle arranged longitudinally on said sleeve tube body. It can conveniently recover the used puncture needle in it, so preventing its damage to person.

The invention discloses a double-cavity chamber transfusion set, which includes a spike, a soft cannula, a chamber, a transfusion tube and a vena transfusion needle, the vena transfusion needle is connected with the output end of the chamber by the transfusion tube, the chamber includes a chamber bottle, a dropper arranged in the chamber bottle and a filter, the dropper is positioned at the middle part of the chamber bottle and is closely connected with the inner wall of the chamber bottle and partitions the inner cavity of the chamber bottle into an upper cavity and a lower cavity serving as a press cavity, the filter is arranged in the upper cavity of the chamber bottle. Because of the adoption of the technique proposal of the invention, the peripheral wall of the lower cavity of the chamber bottle can be pinched come-and-go during the blood transfusion process for ensuring that the filter net will not be blocked and the traffic will not be affected, then the pressure in the lower cavity of the chamber bottle can be pushed upward, blood coagulation matters and impurities piled on the filter will be scattered in the upper cavity of the chamber bottle, so the filter is unblocked, thus the dripping amount and blood cleanness of the dropper can be ensured, and the blood coagulation matters and impurities will not flow into the human body.

An IV infusion system capable of detecting infiltration / extravasation events is described. Flow rate changes due to venous pressure variations are measured; infiltration / extravasation events are detected when these flow rate patterns are altered when infusion is not into a vein.

The invention provides a venous transfusion adjusting and monitoring device and monitoring system. The venous transfusion adjusting device comprises a holder which sleeves the outer side of a dropping pipette; an opening is formed in the side of the holder; a pushing block is contacted with the dropping pipette in the holder through the opening; a stepping motor drives the pushing block to move forward or backward so as to adjust the pipe diameter of the dropping pipette. By the venous transfusion adjusting device, when a venous transfusion speed is too fast, the stepping motor drives the pushing block to move forward to press the dropping pipette, so that the pipe diameter of the dropping pipette is reduced, and the venous transfusion speed is reduced; on the contrary, the stepping motor drives the pushing block backward to reduce the compression on the dropping pipette, so that the pipe diameter of the dropping pipette is increased, and the venous transfusion speed is increased; when the venous transfusion is ended, the stepping motor drives the pushing block to compress the dropping pipette, so that bubbles are prevented from entering a human body through the dropping pipette; medical workers do not need process the device at the site, the venous transfusion speed can be adjusted by the stepping motor, therefore the situation of no enough medical workers is greatly relieved.

The invention concerns a stable aqueous paracetamol solution for use in IV infusion comprising at least one stabilizing-dissolving compound for paracetamol in solution selected from the group consisting of hydroxyalkyl-cyclodextrins and at least one stabilizing compound, being EDTA or monothioglycerol, alone or in combination, in a concentration between 0.001% and 20% m / v.