134 results about "Peripheral intravenous" patented technology

A dual mode handheld ultrasonic device is provided for guiding a venous access catheter into a patient's peripheral vein. It provides B-mode imaging with a predetermined aperture and operating frequency which locates and displays a gray scale cross-sectional image of the target blood vessel. A single doppler beam in a separate mode detects the same blood vessel and creates a single scanline image superimposed to such B-mode cross-sectional image. Simultaneously, the intensity of the positive doppler shift detected by the single doppler beam as it hits the target blood vessel activates a plurality of light emitting diode (LED) indicator lights with varying voltage requirements mounted in the scanhead. Activated LED indicator lights forms an arrow pointing inferiorly perpendicular to the target vessel which guides a physician or a paramedical professional to the precise catheter insertion spot on a patient's extremity while simultaneously viewing the target blood vessel's cross-section on the display screen.

A high-volume peripheral intravenous (IV) catheter and method includes an elongate stylet removably disposed in the lumen of an elongate catheter with the stylet having a beveled distal end forming a piercing tip that protrudes from the outlet port of the catheter. The catheter has a proximal cylindrical shape from the inlet port transitioning at a transition to an inner lumen conical taper terminating at the outlet port, and having a larger internal diameter at the inlet port and a tapering smaller internal diameter between the transition and the outlet port. A plurality of side outlet ports is formed laterally through the catheter in the inner lumen conical taper. A cross-sectional area of the outlet port and the side outlet ports together is equal or greater than a cross-sectional area of the inlet port.

A system and method for increasing the speed of blood and wall shear stress (WSS) in a peripheral vein for a sufficient period of time to result in a persistent increase in the overall diameter and lumen diameter of the vein is provided. The method includes pumping blood at a desired rate and pulsatility. The pumping is monitored and adjusted, as necessary, to maintain the desired blood speed, WSS and pulsatility in the peripheral vein in order to optimize the rate and extent of dilation of the peripheral vein.

An endovenous laser fiber optic member for endovenous laser therapy of peripheral veins of the body including a heat resistant insulative tip shield covering the distal end of the laser fiber optic. The tip shield may have echogenic qualities to increase ultrasound reflectivity. The tip shield also improves deflectability of the distal end and acts as a thermal break.

A dual-mode, capable of imaging and ablation, ultrasound array integrated in a catheter is provided for minimally invasive treatment of arrhythmias. The catheter array is small enough for insertion through a peripheral vein and is longitudinally integrated with the catheter to have a side-view for tissue imaging and ablation. A high length/width array ratio creates a large aperture necessary for high power ablation densities. A catheter stabilization device maintains a distance between the catheter array and the wall of a heart or vein. Visualization of anatomy and imaging of ablated tissue provides a guide for placing the lesion and assists in achieving a pattern of ablated tissue. The catheter is advanced to another area by catheter rotation and/or array steering or focusing. Gating the imaging and ablation processes to a heart cycle allows for accounting and compensation of heart motion and enables automation of an arrhythmia treatment.

The current invention relates to infusion devices, specifically to peripheral intravenous (IV) catheters. In particular, the invention relates to peripheral IV catheter assemblies having features to enable selective and reversible activation of fluid flow through the catheter assembly. Some implementations of the present invention include various configurations of septum valves having a barrier surface that is stressed to bias the barrier surface and provide a pathway through the septum valve.

Systems and methods are provided for monitoring changes in blood volume using waveforms in the peripheral vasculature. In particular, the systems and methods relate to detecting ventilation-induced variation (VIV) of waveforms in the peripheral vasculature. Advantageously, the systems and methods may relate to analyzing VIV in peripheral venous pressure (PVP). Thus, the VIV of PVP may be measured, wherein decreased VIV is indicative of decreased blood volume In exemplary embodiments, such as involving spontaneous breathing, it may be necessary to account for changes in respiratory signal strength. Thus systems and methods are also provided for assessing coherence between ventilation and VIV for a flow or pressure waveform. Specifically, coherence is evaluated by comparing the waveform to a detected respiratory signal. Finally, systems and method are provided for distinguishing the impact of respiration on the PG signal during hypervolemia as compared to hypovolemia. Such systems and methods may advantageously be utilized to monitor fluid status during fluid replacement.

An extracorporeal blood circuit is disclosed for withdrawing, filtering and returning blood from peripheral blood vessels. The blood passage in the circuit extends through a withdrawal tube connected to a catheter in a peripheral vein, a filter, one or more pressure sensors and return tube also connected to a catheter in a peripheral vein (which may or may not be the same vein as used for the withdrawal tube). The blood passage is air free, and has smooth passage walls which promoted continuous and uniform flow of the blood through the circuit.

A Peripheral Intravenous Safety Catheter with Quick, Painless Puncture System (PISCQPPS) and a cannula with a retractile needle mounted in a manually operated bellows mechanism to prevent re-use, avoid accidental perforation and ensure safe disposal. This PISCQPPS offers the advantages of reducing or eliminating pain; reducing the possibility of multiple perforation; reducing the need for experience and technical know-how in the matter of injection; being fitted with a safety system; and easy to use. The PISCQPPS consists of two sequential operating systems - namely, a painless insertion system that is located inside a case, consisting of a catheter, a catheter holder, a trigger guard, a trigger-guard holder, a catheter-holder tube, a cannula, a cannula holder, a spring, a filter holder, and a filter; along with a safety system inside whose case the cannula holder, the cannula and the bellows all operate at the same time.

Aspects of the invention relates to systems and methods for hypovolemia and/or hypervolemia detection of a living subject using peripheral intravenous waveform analysis. In one embodiment, the method includes: acquiring, from a vein of the living subject, peripheral venous signals; performing a spectral analysis on the acquired peripheral venous signals to obtain a peripheral venous pressure frequency spectrum; and performing a statistical analysis on amplitudes of peaks of the peripheral venous pressure frequency spectrum to determine the blood volume status of the living subject in real time. Specifically, at least two peaks, respectively corresponding to a first frequency and a second frequency, are obtained on the peripheral venous pressure frequency spectrum. Amplitude change of the second peak is used to determine the blood volume status of the living subject. Hemorrhage may be detected when a significant amplitude decrease is detected from the second baseline peak to the second peak.

An endovenous laser fiber optic member for endovenous laser therapy of peripheral veins of the body including a flexible heat resistant tip shield covering the distal end of the laser fiber optic. The tip shield has an irregular surface to increase ultrasound reflectivity. The tip shield also improves deflectability of the distal end and acts as a heat sink and heat energy dissipater.

The infusion preparation for peripheral parenteral administration comprises an infusion (A) containing glucose with 80 to 200 g/L concentration, and an infusion (B) containing amino acid with 50 to 150 g/L concentration. The infusion (A) and the infusion (B) are separately put into a vessel that is divided with an openable partition means. The infusion (A) does not contain sulfite, has titratable acidity of 1 or less, contains vitamin B1 and is adjusted to pH 3 to 5. The infusion (B) is adjusted to pH 6.5 to 8. After mixing the both infusions, the mixture has pH 6 to 7.5 and titratable acidity of 5 to 10.

The invention provides a method for constructing nursing management and quality comprehensive information of a hospital. The method comprises the following specific construction steps of: 1, establishing basic information of the whole hospital, i.e. establishing the basic information and personnel basic situations of all clinical departments and all research institutions of the whole hospital; 2, establishing manpower resource dynamic configuration, i.e. dynamically displaying a nurse scheduling table and manpower resources; 3, establishing the nursing quality management, i.e. inputting a quality check and analysis table and estimating the completing condition of nursing indexes and nursing risk factors; 4, establishing a nursing continuing education file, i.e. inputting annual assessment scores of nursing personnel, calculating the credit, querying the learning condition and carrying out special lecture and nursing teaching rounds; 5, establishing mobile nursing information, i.e. establishing patient bar codes, acquiring physical sign data, executing the advice of a doctor, establishing a nursing electronic medical record and carrying out nursing performance appraisal; 6, establishing the catheter placement maintenance of a peripherally inserted central catheter (PICC); and 7, carrying out stoma nursing.

An apparatus for performing phlebotomy through a peripheral intravenous line is described herein. The apparatus includes an introducer and a cannula and is configured to advance the cannula through a peripheral intravenous line. A y-adapter with a port of larger diameter is configured to receive the cannula to place the cannula in fluid communication with the peripheral intravenous line. When advanced, the cannula is configured to transport a bodily fluid to a volume outside of the body.

A system and method for increasing the speed of blood and the wall shear stress in a peripheral artery or peripheral vein to a sufficient level and for a sufficient period of time to result in a persistent increase in the overall diameter and lumen diameter of the artery or vein is provided. The method includes systems and methods to effect the movement of blood at the desired rate and in the desired direction. The movement of blood is monitored and adjusted, as necessary, to maintain the desired blood speed and wall shear stress in the peripheral artery or vein in order to optimize the rate and extent of persistent diameter increase of the peripheral artery or peripheral vein.

A high-volume peripheral intravenous (IV) catheter and method includes an elongate stylet removably disposed in a lumen of an elongate catheter. The catheter has a proximal cylindrical shape from an inlet port transitioning at a transition to a distal tapered conical shape terminating at the outlet port, and having a larger internal diameter at the inlet port and a tapering smaller internal diameter between the transition and the outlet port. A plurality of side outlet ports is formed laterally through the catheter. A cross-sectional area of the outlet port and the side outlet ports together is equal to or greater than a cross-sectional area of the inlet port.

A catheter securement bandage may include a base layer formed with a multi-ply laminate comprising adhesive, gauze, and plastic layers. A top layer may similarly be formed with a multi-ply laminate comprising a layer adhesive, plastic, gauze, and an added layer of adhesive. By securing a hub portion and lure connector of a catheter, the catheter securement bandage maintains an optimal catheter insertion angle of the catheter into a patent this preventing kinking and obstruction of flow through the catheter.

The invention discloses a stem cell preparation for treating cirrhosis, which is prepared from stem cells from human umbilical cord placenta, normal saline containing seralbumin with concentration by volume being 0.5-5%, and low-molecular-weight heparin sodium with concentration being 50-701U/ml. When the stem cell preparation is transfused into a rat model with cirrhosis through a caudal vein, the effective dose of the stem cell preparation is 5*106 cells each time; and the effective dose of the stem cell preparation is 0.5-5*106 cells/ kg each time when the stem cell preparation is transfused into a patient with cirrhosis through a peripheral vein. After applied to rats with cirrhosis and patients with cirrhosis, the stem cell preparation can obviously improve the survival rate of the rats with cirrhosis and the patients with cirrhosis, retard and invert a cirrhosis process, improve a whole state and a liver function state, and promote pathological recovery of liver, thereby developing a new way to cell therapy for treating cirrhosis.