103 results about "Infusion catheter" patented technology

An implantable intratumoral infusion catheter comprises an intratumoral catheter formed of an elongated body having an internal lumen. An anchor mechanism is coupled to the elongated body. The anchor mechanism is configured to interact with a tumor or surrounding tissue to retain the catheter in the tumor.

The utility model belongs to the technical field of medical instruments, and particularly relates to a leakage-proof injection device which comprises an infusion catheter, a dispensing mechanism and a motor, the dispensing mechanism comprises a main body used for containing liquid medicine, a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are fixedly arranged on the main body and communicated with the main body. A liquid inlet and a liquid outlet are formed in the main body, a piston is movably arranged in the main body, the motor is used for controlling the piston to move in the main body, and the liquid conveying guide pipe is communicated with the liquid inlet. A limiting type drainage scheme is provided by adopting the design of a metal plugging section with multiple convex positions and matching with a spring and a stepped inner pipe (such as the liquid inlet and the liquid outlet); according to the limiting type drainage scheme, the liquid medicine can be guided through the drainage channel to complete rapid medicine suction or injection under the action of corresponding suction force or thrust, and meanwhile the problems that a traditional valve is prone to blockage, liquid leakage and the like can be solved.

The utility model relates to the field of medical instruments, in particular to an anti-needle-falling infusion apparatus which comprises a bottle penetrating needle body, a liquid medicine channel is arranged in the bottle penetrating needle body, the liquid medicine channel penetrates through the bottle penetrating needle body, and the bottle penetrating needle body comprises a penetrating section penetrating into an infusion bottle and a connecting section connected with a disposable infusion catheter. A base blocking piece used for limiting the insertion depth of the penetrating section is arranged between the penetrating section and the connecting section, threads assisting the bottle penetrating needle body to be inserted into an infusion bottle rubber plug are arranged on the outer wall of the penetrating section, the rotation starting end of the threads is attached to the base blocking piece, and the height of the threads is smaller than or equal to the height of the infusion bottle rubber plug. According to the anti-needle-falling infusion apparatus, the threads are arranged on the piercing section, when the anti-needle-falling infusion apparatus is used, by rotating the bottle penetrating needle body, on one hand, the bottle penetrating needle body can be inserted into or pulled out of an infusion bottle more conveniently, and on the other hand, the threads are meshed in a rubber plug of the infusion bottle, so that the bottle penetrating needle body can be prevented from falling off from the infusion bottle; and therefore, the medicine bottle is safer in clinical use.

An infusion system comprising: a device for delivering fluid to a tissue of the user; a hub engaging the device for delivering fluid, the hub including an introducer needle for introducing an infusion catheter or an analyte sensor into the tissue of the user, the hub configured to be removable by the user; and an activation mechanism for moving the hub toward the user to thereby cause the introducer needle to be inserted into the tissue of the user.

The present disclosure relates to a self-lubricating cannula for use in delivering a fluid medication to a subcutaneous site. The self-lubricating cannula comprises polyether block polyamide and an additive configured to facilitate the manufacture of a tipped self-lubricating cannula. The present disclosure also provides a method of making a self-lubricating cannula and a method of administering insulin using a self-lubricating cannula.

The utility model belongs to the technical field of medical instruments, and particularly relates to a detachable injector which comprises a shell, a dispensing mechanism, an infusion catheter and a motor, a first fixing seat is fixedly arranged at one end of an output shaft of the motor, and a mounting block is arranged at the end, close to the first fixing seat, of the dispensing mechanism. The first fixing seat comprises a connecting part, a mounting part and an elastic piece used for locking the mounting block, the connecting part is provided with an opening matched with the mounting block, a cavity allowing the mounting block to rotate is reserved between the connecting part and the mounting part, a groove is formed in the mounting part, one end of the elastic piece is fixedly arranged in the groove, and the other end of the elastic piece is fixedly arranged in the groove. According to the scheme, the mounting block is matched with the first fixing base, the connecting piece, the second fixing base and the like, and the detachable syringe which can effectively resist vibration and is more convenient and faster to disassemble is comprehensively provided.

Double-lumen infusion catheter including: a shaft having proximal section, distal section, and intermediate section therebetween; first and second lumens extending along a length of the shaft and having arc shaped wall therebetween; and an inflatable member provided distally to intermediate section, and over the distal section. First lumen has cross section larger than cross section of second lumen and is configured to receive a guidewire therethrough and allow fluid flow via an unobstructed portion of first lumen. Unobstructed portion is formed along guidewire outer surface, between guidewire outer surface and inner wall of first lumen, and extends from an inlet at proximal end of intermediate section to an outlet at distal end of intermediate section. First lumen is narrowed to approximate a first diameter in shaft proximal and distal sections, and is widened to approximate a second diameter greater than first diameter in the shaft intermediate section.

The present disclosure relates to a self-lubricating cannula for delivering a fluid drug to a subcutaneous site. The self-lubricating cannulas include a polyether block polyamide and an additive that are configured to facilitate the manufacture of tip self-lubricating cannulas. The present disclosure also provides a method of making the self-lubricating cannula and a method of administering insulin using the self-lubricating cannula.

To provide deployable baskets, infusion catheters, and methods for treatment of a thrombus in a blood vessel.SOLUTION: A basket may comprise a shaft with a plurality of cuts along a portion of its length to form a plurality of tines 115 that provide support for a plurality of porous tubes to form limbs of the basket. The limbs of the basket expand radially away from the longitudinal axis of the basket when the longitudinal length of the basket is reduced. The limbs may also be connected to a drug delivery system, and in this manner, baskets of the present disclosure allow the use of both mechanical and pharmaceutical means of thrombolysis.SELECTED DRAWING: Figure 1-1

The present invention relates to a facial cleansing instrument, comprising a bottle body and a facial cleansing brush part, the facial cleansing brush part having a liquid outlet channel and a liquid spray hole connected to the liquid outlet channel, the bottle body comprising a bottle body and a bottle head detachably connected to the bottle body, the bottle body having a liquid storage cavity for storing lotion, the facial cleansing brush part being installed at the upper end of the bottle head, a press-type pumping device being arranged in the bottle head, the liquid suction end of the press-type pumping device extending into the liquid storage cavity, the button of the press-type pumping device exposing the bottle head for the user to press, the liquid outlet end of the press-type pumping device being connected to the liquid outlet channel of the facial cleansing brush part through an infusion conduit located in the bottle head, and a vibration device acting on the facial cleansing brush part to vibrate the facial cleansing brush part being arranged in the bottle head. The facial cleansing instrument can accurately control the amount of lotion pumping by pressing, thereby improving the user experience.

The utility model provides an ultrasonic thrombolysis catheter. The ultrasonic thrombolysis catheter comprises an infusion basket, a driving mechanism and an ultrasonic assembly. The infusion basket comprises a plurality of infusion catheters, and a hollow structure is defined by the infusion catheters. The driving mechanism is used for controlling the infusion basket to expand and open or close in the radial direction. The ultrasonic assembly comprises a plurality of ultrasonic electrodes, and the ultrasonic electrodes are fixed in the hollow structure of the infusion basket. During use, the infusion basket which is initially in a closed state is conveyed to a lesion position, and the infusion basket is expanded and opened through the driving mechanism, so that blood flows through thrombus. Thrombolysis medicine enters each infusion catheter and is conveyed to diseased tissue through the infusion holes in the infusion catheters, the thrombolysis medicine is accurately released to thrombus, accurate thrombolysis is achieved, and the dosage of the thrombolysis medicine is reduced. Meanwhile, the ultrasonic electrode is communicated with an ultrasonic generator, so that the ultrasonic generator generates ultrasonic waves, and the ultrasonic waves accelerate point dissolution by unfastening and diluting a fibrin chain, so that more drug receptor sites are exposed.

The present application relates to the field of medical device technology, and more particularly to a stent system capable of sustained drug delivery. The stent system comprises a coated stent and an infusion catheter. The coated stent is coated with an inner membrane and an outer membrane, forming a liquid reservoir between the inner and outer membranes for storing drugs. The outer membrane is provided with a liquid outlet, through which the drug can seep out, achieving sustained drug release. The liquid outlet of the infusion catheter is inserted into the liquid reservoir to infuse the liquid reservoir. This stent system can achieve sustained drug release, effectively resolving the problem of drug retention during digestive tract drug delivery.

The disposable blood transfusion apparatus comprises a bottle penetrating needle, a liquid stopping clamp, a drip chamber, a flow regulator, a needle head and a plurality of transfusion catheters, the flow regulator comprises a shell, a rotating shaft, a rolling wheel and a locking device, a channel allowing the transfusion catheters to penetrate through is formed in the shell, and movable through grooves are formed in the side walls of the two sides of the shell respectively; the locking device comprises two moving blocks and a locking piece, sliding grooves are formed in the outer walls of the two sides of the shell respectively, the two moving blocks are detachably connected to the two ends of the rotating shaft respectively, the two moving blocks slide in the two sliding grooves respectively, and the two moving blocks are detachably connected to the two ends of the rotating shaft respectively. The locking piece is used for locking the position of the moving block in the sliding groove. The purpose of adjusting the infusion speed is achieved by rolling the infusion catheter through the rolling wheel and changing the sectional area of the infusion catheter, after the infusion speed is adjusted, the locking piece locks the positions of the rotating shaft and the rolling wheel by locking the position of the moving block, and the situation that the rolling wheel is prone to sliding can be improved.

An insertion device configured to implant a first medical device and a second medical device in a user. The first medical device may be a fluid delivery cannula configured to deliver a fluid (e.g., insulin) to the user. The second medical device may be an analyte sensor (e.g., a glucose sensor) configured to detect a physiological characteristic of the user (e.g., a glucose level). The insertion device may be configured to be worn by the user. The insertion device includes a first linkage assembly configured to extend and retract a first insertion needle to implant the first medical device and a second linkage assembly configured to extend and retract a second insertion needle to implant the second medical device. The insertion device includes a user input device configured to cause the insertion device to initiate the implantation when activated by the user.

The present application relates to the technical fields of deep vein catheterization infusion, in particular to a constant temperature control speed device for deep vein catheterization infusion, comprising an infusion catheter head and an infusion tube, one side of the infusion catheter head is fixedly connected with one end of the infusion tube. The present application sets a piston frame structure with spiral flow guide grooves inside the infusion tube, changes the fluid dynamics behavior of traditional plunger type propulsion, when the piston frame reciprocates, the liquid medicine forms spiral jet flow under the guidance of the spiral flow guide grooves, forced fluid generates circumferential rotation, effectively destroys the stationary state of the pipe wall boundary layer, converts the axial thrust into rotational shear force, not only reduces the flow resistance, but also eliminates the stagnant zone at the front end of the piston, realizes uniform delivery of the whole cross section, makes the liquid medicine always maintain a dynamic mixing state during the pushing process, avoids density stratification and sedimentation, especially suitable for the infusion of fat emulsion, amino acid and other easily separated nutrient solutions, greatly improves the stability of the infusion.

The application discloses a self-adaptive vena cava occlusion balloon ventricular assist system, which comprises a balloon catheter device and a control device. The balloon catheter device comprises a catheter, a balloon arranged on the catheter and close to the proximal end of the catheter, and a joint arranged on the distal end of the catheter. The catheter is provided with a first pressure cavity, a second pressure cavity and a liquid delivery cavity. The first pressure cavity is used for connecting the first blood pressure measuring port and the joint and is connected with the first blood pressure sensor through a first catheter. The second pressure cavity is arranged on the catheter in a lengthwise direction and is used for connecting the second blood pressure measuring port and the joint and is connected with the second blood pressure sensor through a second catheter. The liquid delivery cavity is used for connecting the inside of the balloon and the joint and is connected with a liquid delivery pump through a liquid delivery catheter. A micro pressure sensor is attached to the outer wall of the balloon, and a signal line led out from the micro pressure sensor is connected with a signal acquisition module through a signal extension line. The application can adjust the pressure of the balloon on the blood vessel wall during occlusion according to the change of the vena cava diameter, improve the occlusion effect and avoid damaging the blood vessel.

The invention discloses an infusion catheter device capable of being quantitatively controlled, and relates to the field of medical instruments, according to the scheme, a main control unit is controlled by a controller to drive a transmission control unit to rotate, liquid in an infusion tube is squeezed to flow under the influence of the squeezing speed, and stable control over the infusion speed and accurate quantitative infusion control are achieved; along with gradual deterioration of the infusion tube, the moving speed of the infusion tube can be controlled by controlling the electrifying power of the electromagnet and controlling the adsorption force of the electromagnet, and as the deformation quantity of the infusion tube is increased and the rotating speed of the transmission control unit is increased, automatic displacement and position replacement can be achieved integrally after the preset speed is reached. According to the scheme, autonomous surface displacement of the infusion tube can be achieved, the overall structure is simple, the miniaturization design is greatly achieved, occupied space of other medical instruments is reduced, the mode of rotating speed compensation deformation is adopted, stable and controllable liquid medicine speed control and quantitative transmission are achieved, and the safety is high. And the moving requirements of moving and stopping infusion in the infusion process are integrally met.

A multi lumen catheter assembly. The assembly provides an expandable, low profile, fixed length sheath and catheter, with fixed infusion ports. The assembly has an expandable outer sheath that expands upon pressure activation with a fluid and the sheath allows the fluid to exit from at least one predetermined fixed location from a distal end of the catheter assembly. The catheter assembly can be used in various medical device procedures, such as a TIPS (Transjugular Intrahepatic Portosystemic Shunt) procedure, or anywhere a low profile, multi lumen, infusion catheter system is desired.

According to the technical scheme, the nursing infusion catheter marking piece is characterized in that a glass plate is arranged on the top face of a protection box, a storage groove is formed in the protection box, a first inlet and outlet is formed in one side of the protection box, and a lifting groove is formed in the top face of the protection box; the protection assembly is arranged in the lifting groove and used for protecting the information cards from falling out, the information cards placed in the protection box can be seen through a glass plate by arranging the glass plate, the information cards in the protection box can also be well protected, and the information cards can be just stored in the storage groove by arranging the storage groove. The information card can enter and exit from the protection box through the arrangement of the first entrance and exit, the information card can be closed in the storage groove through the arrangement of the protection assembly, the information card can be well prevented from falling out accidentally, and the information card can be prevented from falling out through the arrangement of the protection block.

The invention provides a multi-channel composite connection monitoring pipeline structure integrated with NO infusion. The multi-channel composite connection monitoring pipeline structure comprises an infusion catheter, an oxygen input connector, a rotary conversion connector, an NO injection tee joint, a gas sampling tee joint, an oxygen flow sensor and a mixed gas flow sensor. NO is injected into the infusion catheter through the NO injection tee joint and is mixed with oxygen in the infusion catheter, the gas sampling tee joint is located on the downstream of the first connecting pipe of the infusion catheter to obtain stable mixed gas for real-time concentration monitoring, and the two flow sensors are used for monitoring the oxygen and the gas flow after the NO and the oxygen are mixed in real time respectively. The rotary adapter is quickly compatible with a nasal catheter, a mask and an extracorporeal circulation related interface, so that cross-scene seamless connection of intraoperative and postoperative NO treatment is realized. According to the invention, the frequency of pipeline replacement is reduced, the risks of gas leakage, misconnection and pollution are reduced, the stability and controllability of oxygen and NO gas delivery are improved, and the safety and effectiveness of NO infusion are improved.

The invention belongs to the technical field of medical instruments, and particularly relates to a device for feeding medicine into the coronary artery far-end of a catheter through targeted irrigation, which comprises a medicine feeder, a protective cylinder fixedly connected to the side surface of the medicine feeder, a pushing mechanism arranged in the medicine feeder and used for pushing liquid medicine, a medicine feeding mechanism connected to the bottom end of the medicine feeder, an auxiliary cylinder fixedly arranged in the protective cylinder, and a medicine feeding mechanism arranged in the auxiliary cylinder. An electric push rod is fixedly arranged in the protection cylinder, a compression block is arranged in the auxiliary cylinder, and a conveying pipe is arranged on the side face of the auxiliary cylinder. According to the device, the auxiliary cylinder is adopted, so that liquid medicine can be conveniently conveyed and treated, a conveying pipe is not sealed any more, an electric push rod works to drive a compression block to move, the liquid medicine can flow into the medicine feeding mechanism, the liquid medicine is continuously conveyed through the medicine feeding mechanism, and in this way, the working time can be shortened, and the working efficiency can be improved. The working efficiency is improved, the liquid medicine can be conveniently and rapidly replaced for conveying treatment, and the working efficiency of the device for feeding the medicine into the coronary artery far end through the targeted irrigation catheter is improved.

The utility model discloses a buffer type anti-falling analgesia pump catheter connector which comprises a connector pipe sleeve formed by connecting an infusion sleeve and the end portion of a positioning end sleeve, a cylindrical liquid guide cavity is formed in the inner side of the infusion sleeve, and a liquid inlet communicated with the liquid guide cavity and connected with an infusion catheter is formed in one end of the infusion sleeve. A movable catheter coaxial with the liquid guide cavity is arranged in the liquid guide cavity, one end of the movable catheter penetrates through an inner hole of the positioning end sleeve, the diameter of the inner hole of the positioning end sleeve is smaller than that of the liquid guide cavity, the movable catheter is located at the outer end of the connector pipe sleeve and connected to the infusion catheter, and the movable catheter is located on a positioning ring on the periphery of the inner end of the liquid guide cavity. The infusion sleeve is similar to a syringe, and the silicone rubber piston is similar to a syringe piston, so that no matter which pipe section of the infusion sleeve the movable guide pipe drives the positioning ring to move to, liquid guided in from the liquid inlet cannot leak to the cavity, located on one side of the elastic component, of the liquid guide cavity, the structure is simple, and the design is reasonable.

A method and apparatus to direct a drug directly at the point needed for a specific duration for dialysis catheters which are made in standard sizes. Disclosed is a combination of a rate and duration-controlled infusion pump and reservoir and a pre-measured infusion catheter with a radiopaque distal tip. Along the length of the infusion catheter there is a luer lock connector and anti-leak valve. The invention is inserted into a dialysis catheter where the preset marking is aligned with the catheter hub and the distal infusion tip rest at or near the end of the dialysis catheter. The infusion unit is then activated, and the drug is delivered at the distal tip of the catheter, at or in the fibrin for maximum effect. The method of use and device saves time and resources as it can be deployed without the need for a surgical suite or heath care team.

This invention discloses a five-cavity urethral infusion catheter specifically designed for prostatectomy. The catheter includes a tube body with five independent cavities: a urination cavity for draining urine, distally connected to a drainage orifice; a urethral infusion cavity for infusing medication, distally connected to a urethral infusion orifice; a first balloon inflation cavity, distally connected to a first balloon for fixation in the bladder trigone; a second balloon inflation cavity, distally connected to a second balloon for urethral closure; and a third balloon inflation cavity, distally connected to a third balloon for compressing the prostatectomy wound. The third balloon, located between the first and second balloons, is apple / pear shaped and, when inflated, conforms to the prostatectomy wound. This invention, through its innovative three-balloon design and five-cavity structure, solves problems such as incomplete postoperative hemostasis and difficulty in medication infusion. The specially designed apple / pear shaped balloon can precisely compress the wound, and in conjunction with the medication infusion channels, significantly improves surgical outcomes.

A method of clearing a blood clot in a dialysis catheter is provided. The method includes providing a medication reservoir containing clot dissolving medication, an infusion catheter, and an infusion catheter placement guide; accessing an exposed opening of the dialysis catheter; inserting a distal end of the infusion catheter into the exposed opening of the dialysis catheter; advancing the distal end of the infusion catheter through the exposed opening of the dialysis catheter; retracting the infusion catheter back into the dialysis catheter; after determining the location of the distal end of the infusion catheter in relation to the distal end of the dialysis catheter, performing a final adjustment of the location of the distal end of the infusion catheter; and providing medication through the infusion catheter, and out of the distal end of the infusion catheter, to the blood clot to dissolve the blood clot.

The venous catheter device comprises a needle tube seat, an infusion catheter, an infusion catheter seat and a movable blocking component, a puncture channel is arranged in the needle tube seat, the movable blocking component is arranged in the puncture channel, an infusion channel is arranged in the infusion catheter seat, a conical cavity communicated with the infusion catheter is arranged at the far end of the needle tube seat, and the movable blocking component is arranged in the conical cavity. The infusion channel is communicated with the conical cavity, the movable plugging component comprises a cylindrical section and a conical plugging part, the cylindrical section is limited in the puncture channel in a sliding mode, and a connecting structure is arranged at the end of the cylindrical section and detachably connected with the push rod. According to the venous catheter device provided by the utility model, the movable plugging part can be driven to reciprocate between the first working position and the second working position, so that the conical cavity is completely plugged by the movable plugging part in the indwelling period without liquid medicine infusion, and blood cannot enter the conical cavity, the needle tube seat and the infusion catheter seat; the risk of thrombus formation in the inner cavity of the transfusion catheter seat is reduced.

The utility model relates to an anti-bending device for an infusion catheter, which effectively solves the problem that the infusion catheter is easy to bend when a patient is infused through a central venous catheter. Comprising a sliding rod in the left-right direction, sliding barrels are slidably connected to the left end and the right end of the sliding rod correspondingly, a plurality of limiting grooves which are evenly distributed in the left-right direction and communicate with the inner sides of the sliding barrels are formed in the lower side walls of the sliding barrels, and inverted-L-shaped limiting rods made of elastic materials are fixed to the left end and the right end of the sliding rod correspondingly and can be inserted into the limiting grooves; arc-shaped positioning sleeves with upward openings are fixed to the upper ends of the two sliding barrels respectively, arc-shaped pressing sleeves are hinged to the upper ends of the two positioning sleeves respectively, and the sections of the pressing sleeves and the sections of the positioning sleeves can form a circle. The device is simple in structure, convenient to operate, novel in conception and high in practicability.

An infusion system is disclosed comprising a device for delivering medicament to a user, the device for delivering configured to be mounted to the user, the device including a first introducer needle for introducing an infusion catheter into the user for infusing the medicament and a second introducer needle for introducing an analyte sensor into the user for sensing an analyte in the user; a cartridge assembly configured to move from (1) a telescoping position above the device, wherein the first and second introducer needles are in a retracted position within the device for delivering medicament and (2) an advanced position within the device, wherein the first and second introducer needles are in a deployed position inserted into tissue of the user; and a detachable activation mechanism for causing the cartridge assembly to move from (1) the telescoping position to (2) the advanced position in the device.

The invention discloses improved ultrafiltration heat preservation equipment, and relates to the technical field of medical instruments. The improved ultrafiltration heat preservation equipment comprises an ultrafiltration pipeline, an ultrafilter and a temperature control device, the ultrafiltration pipeline comprises an infusion catheter and a liquid outlet catheter; the liquid inlet end of the ultrafilter is communicated with the infusion catheter, the liquid outlet end of the ultrafilter is communicated with the liquid outlet catheter, the infusion catheter is suitable for inputting blood into the ultrafilter, and the liquid outlet catheter is suitable for outputting the blood filtered by the ultrafilter; the temperature control device is communicated with the liquid outlet catheter and used for adjusting the blood temperature. The structure of the improved ultrafiltration heat preservation equipment is improved, the temperature control device is used for controlling the blood temperature, the blood temperature can be kept within the normal range, arrhythmia and endangering the life of a child patient due to the fact that the body temperature of the neonate is rapidly decreased after improved ultrafiltration are avoided, the safety of improved ultrafiltration is greatly improved, meanwhile, operation is simplified, and the cost is reduced. And medical personnel do not need to adopt other operations to increase the body temperature of the child patient.

The utility model discloses a liquid medicine transfer device, and relates to the field of medical equipment. A liquid medicine transfer device comprises a plurality of medicine conveying catheters which are all detachably connected with a connecting piece. The connecting piece is provided with a plurality of connectors, and each connector is detachably connected with the medicine conveying catheter; the first transferring assembly is detachably connected with the medicine conveying catheter and used for transferring medicine liquid in the medicine liquid bottle; the second transferring assembly is detachably connected with the medicine conveying catheter and used for transferring medicine liquid in the medicine liquid bottle; the puncture assembly is detachably connected with the medicine conveying catheter and used for being connected with medicine liquid in the medicine liquid bottle. The first transfer assembly and the second transfer assembly are arranged and used in cooperation, when multi-dosage-form liquid medicine needs to be prepared for combined infusion, medicine is punctured through the puncture assembly, the medicine is transferred and mixed through the first transfer assembly and the second transfer assembly by means of the medicine infusion catheter, repeated operation is not needed, and operation is convenient. The workload of medical staff can be reduced, the operation process is simplified, and liquid medicine is prevented from being polluted by the external environment.