47 results about "Arterial catheter" patented technology

A device for fixing a catheter, such as a peripheral veinous catheter, a central veinous catheter or a central arterial catheter, to the body of a patient. The device includes a housing, which can be closed by a lid, and a base coupled to the housing, surrounding the housing and enabling the housing to be fixed to the skin of the patient. The housing includes a first chamber through which the outer part of the catheter, which is placed in the vein, passes and a second chamber for accommodating and maintaining the catheter.

An orthogonal arterial catheter preferably includes a hub and a cannula. The hub preferably protects the cannula from potential kinking and shearing forces because the cannula upon exiting a patient's body enters the hub. The hub preferably provides a passageway through which the hose travels to a connector piece. The connector piece preferably attaches the device to a fluid line such as an arterial line transducer. In addition, the hub preferably includes a port that provides a channel through which a guide wire or a needle may gain access to the cannula. The hub also may include appendages extending from it to suture to the patient.

A dual catheter ablation system with an arterial catheter and a venous catheter and at least two magnetic elements, a first magnetic element placed in the arterial catheter and a second magnetic element placed in the venous catheter, where at least one of the arterial catheter or the venous catheter carries an ablating electrode. The first magnetic element has a predefined polarity and the second magnetic element has an opposite polarity with respect to the pre-defined polarity. A protective sheath is provided for enclosing the catheter pair, the first magnetic element and the second magnetic element. The dual catheter ablation system is configured to be placed inside an anatomical region such that a target tissue is in between the first magnetic element and the second magnetic element, bringing the ablating electrode in close proximity to a target tissue.

An improved angiographic catheter that allows selective catheterization of the bilateral pelvic arteries via a unilateral single common femoral arterial entry site for the purpose of introducing radioopaque iodinated contrast solutions for both diagnostic and therapeutic purposes. The catheter has an optimal length, specific tapered and curved regions, and a progressively tapering diameter along its length. The catheter is made from a hybrid of soft, flexible hydrophilic and reinforced materials to allow for conformational changes in order to accommodate to the variety of vascular anatomy encountered in clinical angiographic practice.

The invention relates to an apparatus and method for determining physiologic parameters of a patient. The apparatus comprises a patient monitor reading in a pressure signal from a pressure sensor measuring an arterial pressure of the patient employing an arterial catheter. The patient monitor can also read in an electrocardiography signal from an ECG device The patient monitor determines curve characteristics indicative for a breathing state and / or a heart rhythm state of the patient and switches from a first volume responsiveness indication state to a second volume responsiveness indication state, if a first condition is met by the curve characteristics, and from the second volume responsiveness indication state to the first volume responsiveness indication state, if a second condition is met. Thus, two visually and / or audibly distinguishable indication states are provided depending on - whether the relevant curve characteristics indicate that the patient is in an arrhythmic condition, and / or - whether the relevant curve characteristics indicate that the patient is breathing spontaneously.

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 provides an intelligent ECMO treatment device based on a rolling type blood pump and a control method of a system.The intelligent ECMO treatment device comprises a vein cannula, the rolling type blood pump, a membrane lung and an arterial cannula, the vein cannula is connected to an inlet of the rolling type blood pump through a first connecting pipe, and the rolling type blood pump is connected to an outlet of the artery cannula through a second connecting pipe; a venous pressure sensor is arranged on the first connecting pipe; an outlet of the rolling type blood pump is connected to an inlet of the membrane lung through an arteriovenous bridge tube, an artery overpressure sensor is arranged on the arteriovenous bridge tube, the membrane lung is further connected with an air and oxygen mixer and a temperature changing device, an outlet of the membrane lung is connected to the arterial cannula through a second connecting tube, and the arterial cannula is connected with the air and oxygen mixer through a second connecting tube. The venous pressure sensor and the artery overpressure sensor are respectively connected with the rolling type blood pump through the central processing unit. According to the invention, the perfusion pressure can be intelligently and accurately controlled, and finally constant-flow perfusion is achieved.

A device for establishing an isolated perfusion including a pump arrangement, a venous catheter, and an arterial catheter, for establishing an artificial circulation in a target area of a human or animal body, which artificial circulation is isolated from the systemic circulation. The device has first means for feeding an analysis gas into the artificial circulation, and second means for monitoring whether a blood exchange takes place between the artificial circulation and the systemic circulation.

The present disclosure provides methods and compositions for treating coronary tissue damaged as a result of a cardiac disorder such as ischemia, acute myocardial infarction, vulnerable plaques, or reperfusion injury. Specifically, the cardiac disorder is treated using a multivalent molecule that is specific for a marker located, in or near the damaged coronary tissue and a marker located on a target cell (e.g., a stem cell). The multivalent molecule may be administered by intravenous injection, intra-arterial catheter, intramyocardial injection, or implantable device (e.g, stent).

The invention relates to a method for continuously monitoring a blood pressure measurement using a sensor (3) connected by a hydraulic link (2) to an arterial catheter (1), said method comprising the steps of: - determining the dynamic parameters of said link (2), - analyzing the frequency content of the incident signal, - detecting one of the following situations: (a) ability of said link (2) to transmit the incident signal with a distortion below a threshold, (b) ability of said link (2) to transmit the incident signal with a distortion above said threshold and possibility of correcting the measured signal, (c) inability of said link (2) to transmit the incident signal with a distortion below said threshold and impossibility of correcting the measured signal, - periodic application of a mechanical action to the tubing providing the hydraulic link (2).

The invention discloses a method and a system for improving liver intervention targeted positioning accuracy. The method comprises the following steps: acquiring first focus information of a first user according to first image information; determining a first targeted target position according to the first focus information; obtaining first blood vessel distribution information and first blood vessel attribute information according to the second image information; obtaining first interventional blood vessel path information according to a first targeted target position, the first blood vessel distribution information and the first blood vessel attribute information; determining a first interventional wound inlet; obtaining a first navigation feature list; constructing a first interventional navigation instruction chain according to the first navigation feature list; and according to the first interventional navigation instruction chain, performing liver interventional targeted localization at the entrance of the first interventional wound surface. The technical problems that in the prior art, in the arterial intubation process, the intubation positioning accuracy is not high, and positioning is not accurate or intubation cannot be accurately assisted to the focus position are solved.

The invention discloses a continuous arterial blood glucose monitoring device and a control method thereof, belonging to the technical field of medical instruments and methods. By using the three-wayconnection, a pressure tube, a blood collection port, an arterial catheter and other devices of the original arterial pressure measuring monitor, several groups of conductors of continuous arterial blood glucose meter are controlled by program to turn on and off the corresponding device for realizing actions of switching, opening / closing, pinching, rotating, so that the truncation of the anticoagulant saline in the arterial pressure measurement process is sequentially realized, the program-controlled integrated acquisition syringe sucks the liquid in the arterial catheter to realize the program-controlled elevation of the blood surface, The electric clip clamps the small-scale integrated syringe for blood collection and testing, and records, stores and analyzes all kinds of data through the blood glucose meter, at the same time transmits to the outside world and realizes the alarm function, which can greatly reduce the workload of the medical staff and improve the accuracy and effect of blood glucose monitoring at the same time. The invention has the advantages of exquisite thinking, good modularization, strong anti-interference, low cost, easy program control, easy expansion of function and high blood sugar monitoring accuracy.

The invention relates to an intelligently controlled postoperative multi-functional nursing device for lower extremity arterial catheter thrombolysis. The device comprises an intelligent control device, an inflating device, a braking device, a bleeding monitoring alarm device, and the inflating device can be inflated to form a lateral lying position for preventing pressure injury of the patient'ssacrococcygeal part and left and right hip parts, and a flat position for preventing pressure injury of the patient's heel with high lower limbs and low upper body. The inflating device comprises twoupper and lower inflating chambers, wherein the upper inflating chamber is provided with a sealed partition to form two left and right sub-inflating chambers; The lower inflatable cavity includes theupper body cavity and the lower limb cavity which are inflated independently. The inflatable height of the lower limb cavity is higher than the inflatable height of the upper body cavity. The invention is used for the patients with hemorrhage at the puncture site of the lower limb due to agitation, disturbance of consciousness or involuntary flexion and extension under sleeping state, thrombolysisfailure due to thrombolysis catheter prolapse and pressure injury at the compression sites such as sacrococcygeal and heel due to limb immobilization after lower limb artery puncture and catheter thrombolysis.

Provided are methods for creating a pressurized cadaver model used for surgical procedure training. In the method the internal jugular veins, common carotid arteries, brachial arteries, superficial femoral arteries and femoral veins thereof of a cadaver are exposed. One internal jugular vein is ligated and a drainage tube is disposed in the other internal jugular vein. An arterial catheter is inserted into one brachial artery and connected to a pressure transducer and an arterial cannula is placed in a carotid artery and connected to a fusion pump. Fluid is injected into the artery through the cannulated carotid artery. A representative example of the surgical procedure includes resuscitative endovascular balloon occlusion of the aorta.

The invention discloses a hemodialysis venous catheterization fixing strap and belongs to the technical field of venous catheterization fixing devices. The hemodialysis venous catheterization fixing strap comprises a fixing strap and at least one group of limiting components; one end of each limiting component is connected to the outer side of the fixing strap; one of the limiting components is selectively connected to an arterial catheter, and the other one is selectively connected to a venous catheter. The fixing strap is provided with holding mechanisms and an elastic mechanism; the holdingmechanisms are positioned on the two sides of the main catheter; the elastic mechanism comprises a sliding block which is slidably connected to the outer side of the fixing strap; the sliding sleeveis arranged on the limiting component in a sleeving way; and when the limiting component is tensioned, the limiting component pulls the sliding block to slide and abut against the holding mechanism, so that the holding mechanism presses against and holds the main catheter. The hemodialysis venous catheterization fixing strap has the beneficial effects that the pulling action of the venous catheterization can be converted into the holding action force for the main catheter, so that the activity of the venous catheterization is greatly limited, unintended escape of the venous catheterization from the blood vessel is avoided, the safety of the hemodialysis fixing strap is optimized and the pain of patients is reduced.

An assembly for placement of a cardiac, aortic or arterial implant. The assembly includes an insertion sheath of an introducer or of a delivery catheter, which is of a size smaller than that of an introducer, intended to be introduced into an artery of a human body. The metal support of an electrode of the external cardiac stimulator being integrated into the insertion sheath of a peripheral venous or arterial accessory catheter, or a sleeve around the accessory catheter, which is introduced into the peripheral vein or artery of a patient. The sheath of the accessory catheter or the sleeve is therefore directly in contact with a peripheral vein or artery of the patient.

The invention relates to an intensive care sampling device characterized by comprising a switcher, an arterial catheter, a central venous catheter, a positive pressure joint and a medical pressure sensor, wherein the arterial catheter, the central venous catheter, the positive pressure joint and the medical pressure sensor are connected with the switcher. The switcher is provided with a first joint, a second joint, a third joint, a fourth joint and a fifth joint. The first joint is in communication with the arterial catheter through a first infusion tube, a normal pressure joint is mounted onthe second joint, the third joint is in communication with the central venous catheter through a second infusion tube, and the fifth joint is connected with an exhaust pipe. Hemostixes are mounted onthe first infusion tube and the second infusion tube. The intensive care sampling device has the advantages that a multifunctional monitoring sampling device is formed by mutual cooperation of the multi-channel switcher, the arterial catheter, the central venous catheter, a monitoring instrument and the positive pressure joint; the switching monitoring of arterial blood pressure and central venousblood pressure can be performed, and more importantly, the operational problems caused by multi-stage valves can be avoided.

The invention discloses a method, a device and equipment for quantifying vascular stenosis and a readable storage medium. The method comprises the following steps: acquiring a CT image containing a lesion blood vessel; taking the CT image as the input of a trained neural network model, and generating a DSA blood vessel image correspondingly containing the focus blood vessel; according to the DSA blood vessel image, determining the stenosis rate of the narrowest point in the focus blood vessel. Therefore, the DSA blood vessel image is obtained in the mode that the CT image is converted through the neural network model, and the DSA blood vessel image obtained through the mode is higher in accuracy when the stenosis rate of the narrowest point in the focus blood vessel is calculated. Meanwhile, the DSA blood vessel image is obtained through neural network model conversion, and the step of arterial intubation and trauma generated by arterial intubation in the prior art can be avoided.

The invention provides an invasive blood pressure measuring device provided with a by-pass water bag. The device is characterized by comprising an arterial catheter, a flushing tube, a pressure measuring transducer, a main through tube, the water bag, a blood collection connecting tube and a second three-way valve, wherein the arterial catheter is communicated with one end of the main through tubethrough the blood collection connecting tube, the other end of the main through tube is communicated with the flushing tube through the second three-way valve, one end of the water bag is communicated with the main through tube through a first by-pass tube, the other end of the water bag is connected with one end of a second by-pass tube, and the other end of the second by-pass tube is connectedto a port of the second three-way valve. The invasive blood pressure measuring device has the advantages that by squeezing the water bag, original saline in the water bag is injected into the body ofa patient, after the water bag is released, the blood of the patient can enter the arterial catheter and the blood collection connecting tube, and at this time, the blood is simply extracted through the blood collection connecting tube, so that the problems are solved that when an existing invasive blood pressure measuring device is utilized, the operation steps are cumbersome, operation errors occur easily, and the patient is easily cross-infected; the beneficial effect is remarkable, and the device is suitable for application and popularization.

The invention discloses a formula of a specific targeting medicament for treating pancreatic cancer. The specific targeting medicament comprises the following components: a compound X-76, namely 43-O-(2-(4-(diethylaminomethyl)-1H-1,2,3-triazol-1-yl)acetyl)oxyrapamycin, and modified magnetic carboxymethyl chitosan nano microspheres, wherein the weight ratio of the compound X-76 to the modified magnetic carboxymethyl chitosan nano microspheres is 1:(15-20). According to the invention, the compound X-76 / modified magnetic carboxymethyl chitosan nano drug-carrying microspheres can have superparamagnetism, can selectively reach and be positioned at a tumor target area to release the medicament under guidance of an external magnetic field through vein medication, arterial catheter medication, oral medication or direct injection, so that the targeted therapeutic effect of the compound X-76 is improved, and comprehensive control of temperature, time and stirring speed in a preparation process is improved. Therefore, that the diameter of the compound X-76 / modified magnetic carboxymethyl chitosan nano drug-carrying microspheres is small (35+ / -2 nm), slow release performance is good, and simultaneously the targeted therapeutic effect of the medicament on pancreatic cancer cells PANC-1 is enhanced.

The invention relates to an infant extracorporeal circulation pre-filling liquid ultrafiltration device and method. The ultrafiltration device comprises a blood storage bottle, a main pump, an oxygenator, a microembolus filter, a branch pump and an ultrafiltration system which are sequentially connected, wherein the liquid outlet of the microembolus filter is connected with the branch pump through a first connecting pipe, the branch pump is connected with the ultrafiltration system through a second connecting pipe, the outlet of the ultrafiltration system is connected with a venous cannula of a child patient through a liquid feeding pipe, a reflux pipe is arranged on the first connecting pipe, the reflux pipe is connected with the branch pump and the arterial cannula of the child patient, the device further comprises a blood gas analyzer, and the blood gas analyzer is linked with a perfusion pump. The ultrafiltration method comprises the steps of pre-filling liquid mixing, pre-filling liquid common ultrafiltration, pre-filling liquid balance ultrafiltration, intraoperative perfusion blood balance ultrafiltration and improved ultrafiltration after extracorporeal circulation is stopped after the operation is finished. According to the device and the method, combined ultrafiltration is carried out on perfused blood in the periextracorporeal circulation period, the operation time can be effectively shortened, inflammatory response is reduced, damage to the body is reduced, and the extracorporeal circulation safety is improved, so that the recovery period of a child patient is shortened.