42 results about "Double lumen catheter" patented technology

The invention discloses a traumatic patient body cavity rewarming method and device based on double-orifice precise temperature control and a storage medium. According to the method, temperature control lavage fluid is synchronously conveyed through double cavities, body temperature and pressure data are collected in real time, parameters are dynamically adjusted, and efficient rewarming is achieved. The device comprises a main machine, a double-cavity rewarming catheter and detachable consumables, the double-cavity catheter comprises a bladder lavage cavity and a stomach tube rewarming cavity and is connected with the main machine through a spiral connector, and the heat exchange efficiency is improved through an internal spiral heat conduction structure; the host integrates an intelligent temperature control system and a double-pump driving and pressure monitoring module, and supports a touch screen operation and wound first-aid mode. The system may store and synchronize data to an external medical system. The scheme solves the problems of low rewarming efficiency, temperature control difference, complex operation and the like in the prior art, and is suitable for low-body-temperature treatment of traumatic patients.

A radiopaque anchor and delivery device system may comprise a pigtail catheter and a radiopaque anchor. The pigtail catheter may be a dual lumen catheter configured to deploy the radiopaque anchor and delivery a radiopaque fluid or contrast agent. The implantable radiopaque anchor may be slidably disposed within and deployable from a lumen of the elongate shaft. A method for deploying an implantable radiopaque anchor may include advancing a pigtail catheter through the vasculature to a target location; identifying an implant location; forming a channel in a tissue at the implant location; and deploying an implantable radiopaque anchor within the channel.

This utility model belongs to the field of medical device technology, specifically relating to a double-lumen central venous catheter with anti-wall adhesion and anticoagulation functions, including an extension tube, a double-lumen catheter, and a connector; the extension tube is connected to the double-lumen catheter through the connector; the double-lumen catheter is divided into two inlet lumens by a diaphragm, and the two inlet lumens are connected to two corresponding extension tubes; a side hole and a main hole are provided at the end of the double-lumen catheter, and the end of the double-lumen catheter has a C-shaped segment, with the side hole located on the concave side of the C-shaped segment, and the main hole located at the end of the double-lumen catheter. The C-shaped segment in this design reduces the occurrence of the side hole adhering to the blood vessel wall, reducing the probability of local coagulation and thrombosis when used for pediatric hemodialysis blood drainage; the biomimetic sharkskin microgrooves etched on the outside of the double-lumen catheter reduce resistance to blood flow and thrombus formation; the biomimetic sharkskin microgrooves can be filled with covalently grafted sulfonated heparin-hydrogel, continuously releasing anticoagulant factors, further reducing the formation of wall-attached thrombi.

The invention discloses a vascular sheath combined double-cavity catheter for limb arterial embolism and an operation method, and relates to the field of interventional medical instruments. A main cavity and an auxiliary cavity of the double-cavity catheter are flushed to exhaust air; a target blood vessel is punctured through the Seldinger technology, the intelligent lighthouse blood vessel sheath is sent to a preset position, and the relative position of the far end of the sheath tube and a target blocking area is determined through the image equipment and the position monitoring assembly. The position monitoring assemblies are distributed in the circumferential direction of the far end of the sheathing canal, the detection direction covers the front portion, the side portion and the instrument butt joint area of the sheathing canal, the sheathing canal and thrombus boundary, the catheter head end position and the blood vessel wall state can be fed back in real time, a precise positioning basis is provided for each step of operation, and experience dependence is reduced; the fluid blocking assembly and the auxiliary cavity of the double-cavity catheter form a reverse fluid channel, the perfusion flow speed and the pulse frequency are adjusted in real time in combination with a closed-loop adjustment algorithm, the fluid only permeates into a target blocking area in a directional mode, diffusion to healthy blood vessels is avoided, and the local action efficiency is improved.

The utility model relates to a kind of low material effective type simple neuroendoscope sleeve, including sleeve main body and the double-lumen catheter of insertion sleeve main body inside, sleeve main body front end is provided with arc section, double-lumen catheter includes coaxially arranged main cavity and annular auxiliary cavity, annular auxiliary cavity front end is connected annular air bag by hot-pressing, tail end is connected inflation device by luer joint, double-lumen catheter tail end outer wall is fixedly connected with limit ring, and sleeve main body is equipped with magnetic attraction type limiting mechanism between limit ring;Concentric double-lumen design ensures that operating channel is unobstructed, magnetic attraction type limiting mechanism realizes quick positioning, combined with the concentric unobstructed form after air bag inflation, form stable unobstructed operation space, ensure clear vision, and avoid repeatedly adjusting position;Meanwhile, pressure indicator real-time monitoring air bag pressure, multi-dimension reduces tissue damage risk.

The invention provides a double-cavity catheter which comprises a catheter body, the catheter body comprises a hollow outer catheter and an inner catheter arranged in the outer catheter, the outer catheter and the inner catheter are arranged in a spaced mode, the inner catheter comprises an inner bonding layer, a metal braid layer and an inner high polymer material layer from inside to outside in the radial direction, and the inner bonding layer is arranged between the metal braid layer and the inner high polymer material layer. The metal braid layer is formed by weaving metal flat filaments, the thickness range of the metal flat filaments is 0.015-0.02 mm, and the width range of the metal flat filaments is 0.1-0.15 mm. According to the double-cavity catheter, the metal woven layer of the inner tube is formed by weaving the metal flat wires with the thickness of 0.015-0.02 mm and the width of 0.1-0.15 mm, under the limiting condition that the wall thickness of the inner tube is strictly controlled to be within 0.25 mm, excellent radial supporting force and bursting resistance can still be provided, the functional requirement for high-pressure injection of a contrast agent in an interventional operation is met, and the function of high-pressure injection of the contrast agent in the interventional operation is achieved. And the whole catheter is ultrathin and small, so that the catheter can pass through a 5Fr catheter sheath.

The application discloses a kind of integrated injection device suitable for double-lumen PICC catheter tube, it is related to syringe technical field, to solve the technical problem of single function of injection device, including double-lumen injection shell, two injection heads, moving assembly, double-piston assembly, transmission mechanism and gear set.The application is designed transmission mechanism and gear set structure, so that when the clamping block is connected with the rotating hole, the gear ring can rotate relative to the cylinder, the moving assembly makes the gear ring rotate relative to the cylinder, so that the first gear C is driven by gear A intermittent rotation, so that double-piston assembly intermittent movement realizes pulse injection, when the clamping block is connected with the rotating ring, moving assembly, so that the gear ring and cylinder rotate simultaneously, so as to realize continuous injection, simple operation can realize two injection modes, solve the technical problem of single function of current injection device.

The present invention relates to the field of medical device technology, and in particular to an anti-blocking and anti-adhesion intrauterine balloon device. The device comprises a double-lumen catheter, wherein the upper end surface of the double-lumen catheter is wrapped with a balloon, the air cavity outlet end of the double-lumen catheter is connected to the inner cavity of the balloon, and the injection cavity outlet end of the double-lumen catheter is exposed on the outer surface of the balloon; a cervical dilator is sheathed on the surface of the double-lumen catheter, and the outer surface of one side of the double-lumen catheter is fixedly connected to the inner surface of the cervical dilator; the lower end of the cervical dilator is provided with multiple skirts along the circumferential direction, and the multiple skirts can overlap the surface of the double-lumen catheter to shield the lower end of the cervical dilator. The present invention can prevent adhesions in the uterine cavity after curettage by expanding the uterine cavity with a balloon; the present invention expands the cervical opening with the cervical dilator, and then seals the lower end of the cervical dilator with the skirt, preventing pathogens in the vagina from entering the uterine cavity. When blood clots flow out of the cervical dilator, the dilator can expand to allow normal excretion.

The invention discloses a hollow balloon embedded medicine local injection system, and relates to the technical field of medical instruments. The device comprises an expandable balloon, a hollow catheter, a medicine storage unit and an injection control unit. A pre-buried medicine layer is arranged on the outer surface of the balloon, the hollow catheter directionally impacts the inner wall of the balloon through the fluid jet holes to rapidly dissolve the medicine layer, the medicine storage unit maintains the temperature and pressure of a medicine solution to be stable, and the injection control unit achieves intermittent high-pressure jet output. According to the system, the injection hole design, the porous structure layer and the double-cavity catheter structure are optimized, the drug release efficiency and adaptability are improved, the problems that in the prior art, drug release is uncontrollable, and the system flexibility is insufficient are solved, and the system is suitable for the scenes of vascular interventional therapy, tumor ablation and the like.

This disclosure relates to the field of medical device technology and provides a puncture tube assembly. The puncture tube assembly includes a puncture needle, a double-lumen catheter, a first balloon, a second balloon, and an air pump. The puncture needle includes opposing head and tail ends, with a pressure sensor at the head end. The double-lumen catheter passes through the puncture needle and has a diaphragm extending along its extension direction, dividing it into a drug delivery chamber and a drainage chamber. The first balloon surrounds the circumferential outer side of the puncture needle. The second balloon is located between the puncture needle and the double-lumen catheter. One end of the air pump communicates with the first balloon, and the other end communicates with the second balloon, for delivering gas between the first and second balloons. The puncture tube assembly provided by this disclosure not only allows for drug delivery through drainage but also avoids the risk of accidental sharp injury to the heart.

The present invention relates to a connection system for connecting a two-lumen catheter to an fluid management device, the connection system comprising a catheter connecting device and a management connecting device configured to be connected together, the catheter connecting device comprising a polymeric gasket and a rotor abutted within the housing against the polymeric gasket, the management connecting device being configured to switch between a forward configuration and a reverse configuration by rotation of the socket around the flow axis.

The present application belongs to the technical field of polymer material forming, and relates to a medical catheter, in particular to a medical catheter forming die, a melt head device and a catheter forming process. The variable cross-section double-lumen tube die comprises a flat-elliptical covered double-lumen catheter forming runner one and a tearable double-lumen tube forming runner two. The on-off of the covered extrusion channel is controlled by a swing cylinder, so that the single-lumen tube body and the double-lumen tube body are integrally formed. The average breaking force at the stepped cross-section is between 160-180 N, avoiding the risk of catheter breakage during use. The die structure is simple and easy to operate. The melt head device can realize one-step forming of the stepped and head-end melt head of the catheter, avoiding unstable quality caused by two operations, and making the product consistent. The medical catheter forming process is simple and easy to operate, does not require professional technical personnel, has low cost and low energy consumption, is non-toxic and odorless, and can significantly improve production efficiency.

Disclosed herein are exemplary medical devices for delivery of compositions to a target site. A disclosed medical device may comprise a delivery device comprising a delivery device comprising a handle, a composition delivery container and its plunger, an insertion tube, a dual lumen catheter comprising an exit port and optionally, an end structure, and fluid connections therefor, components for moving one or more catheters or for compressing one or more catheters. Methods of treatment and diagnosis using a disclosed delivery device, compositions for such methods and kits and systems are also disclosed.

The utility model discloses a single-balloon catheter which solves the problem that in the prior art, the leakage state of a balloon is inconvenient to observe. The device comprises a supporting tube which is fixed in an intestinal tract and is positioned at the upstream of an anastomotic stoma of the intestinal tract, a double-cavity catheter which is arranged in the supporting tube and is used for discharging contents in the intestinal tract, a sealing balloon which is hermetically sleeved on the double-cavity catheter and is sealed with the inner wall of the supporting tube after being inflated, and a connecting joint which is arranged on the double-cavity catheter, the conveying mechanism is connected with the double-cavity catheter, communicated with the sealing balloon through the double-cavity catheter and used for conveying fluid media, and the indicating balloon is arranged on the conveying mechanism and communicated with the sealing balloon through the conveying mechanism. The fluid medium can be conveyed to the sealing balloon and the indicating balloon through the conveying mechanism, the indicating balloon and the sealing balloon are communicated through the conveying mechanism, and whether the sealing balloon exists or not is judged by observing the dry and flat state of the indicating balloon.

The utility model provides a kind of double-cavity suction catheter, it is related to medical instrument technical field, including double-cavity catheter, double-cavity catheter includes tube body, OTW cavity, RX cavity and developing mark, RX cavity is arranged in the side of tube body, OTW cavity includes proximal end cavity and distal end cavity, RX cavity is arranged in parallel with distal end cavity, proximal end cavity diameter is greater than the diameter of distal end cavity;By setting double-cavity catheter, including OTW cavity, RX cavity, in intracranial blood vessel tortuous part RX cavity can be inserted into a micro guide wire alone, can guide suction catheter to be conveyed to target position along blood vessel wall, can avoid "windowsill effect";While OTW cavity can also be inserted into a micro guide wire alone, synchronously assist suction catheter to be conveyed to target position, increase support force, solve the suction catheter in place difficult problem caused by "windowsill effect" and insufficient support force, and wherein the opening of RX cavity is arranged in side surface, cooperate the diameter change of OTW cavity, slow down the influence of RX cavity to suction, guarantee suction effect.

A medical contrast suspension generating delivery apparatus includes a Venturi-agitating tip assembly, a source of pressurized medical carbon dioxide, a source of an iodinated contrast medium, and a dual lumen catheter connecting the Venturi-agitating tip assembly to the source of pressurized medical carbon dioxide and the source of the iodinated contrast medium.

Adapters, connectors, and tubing provide for connection of a blood pressure cuff to a pressure source, such as a patient cardiac monitor. Adapters, connectors, and tubing are configured to allow a patient to be connected and disconnected from monitoring equipment without removing the blood pressure cuff from the patient's appendage. Among other aspects, adapters may include various configurations that allow connection of: single lumen tubes to single lumen tubes or equipment; single lumen tubes to dual lumen tubes or equipment; dual lumen tubes to dual lumen tubes or equipment; and dual lumen tubes to single lumen tubes or equipment. Tubes may include dual lumen tubing where the lumens are separated by a web, and the web maintains the spacing between the connectors attached to the lumens.

Embodiments disclosed herein are directed to a catheter placement system including a dual lumen catheter, or similar device, and a catheter stiffening system configured to facilitate placement of the catheter. The catheter stiffening system can include a first stylet disposed in a first catheter lumen and a second stylet disposed in a second catheter lumen. A guidewire can extend through a stylet lumen of the second stylet and a channel of the first stylet. A distal portion of the first stylet can include a skived portion and a distal portion of the second stylet can include a notched portion. As such, the distal portions of the first stylet and the second stylet can interlock and align the stylet lumen with the channel. The guidewire can extend through both the stylet lumen and the channel to further secure the distal portions of the stylets together.

The invention relates to the technical field of medical equipment, and provides a puncture tube assembly. The puncture tube assembly comprises a puncture needle tube, a double-cavity catheter, a first air bag, a second air bag and an air pump, the puncture needle tube comprises a tube head end and a tube tail end which are opposite, and a pressure sensor is arranged at the tube head end; the double-cavity catheter is arranged in the puncture needle tube in a penetrating mode, a diaphragm is arranged in the double-cavity catheter, the diaphragm extends in the extending direction of the double-cavity catheter, and the diaphragm divides the double-cavity catheter into a medicine feeding cavity and a drainage cavity; the first air bag is arranged on the circumferential outer side of the puncture needle tube in a surrounding mode. The second air bag is arranged between the puncture needle tube and the double-cavity catheter; one end of the air pump is communicated with the first air bag, the other end of the air pump is communicated with the second air bag, and the air pump is used for conveying air between the first air bag and the second air bag. According to the puncture tube assembly, drainage administration can be achieved, and the accidental risk of acute injury to the heart is avoided.

The utility model relates to a double-cavity perfusion catheter which comprises a catheter body, a catheter seat, an end cap, an outer tube and an inner tube, the inner tube is arranged in the outer tube in a penetrating mode, an inner cavity channel is formed in the inner tube, an outer cavity channel is formed between the inner tube and the outer tube, a first hole is formed in the surface of the outer tube, the first hole is communicated with the outer cavity channel, and a second hole is formed in the near end of the inner tube. The second hole is communicated with the outer cavity channel and the inner cavity channel; the catheter seat is connected to the near end of the catheter main body, and the catheter seat is provided with connecting ports which are respectively communicated with the inner cavity and the outer cavity; the end cap can only plug the connecting port, or plug the connecting port and the second hole at the same time. By means of the design of the end cap, compared with a conventional perfusion catheter, a hemostasis valve, a blocking guide wire and other components are omitted, surgical operation is simpler and more convenient, burdens are relieved for doctors and patients, and the diversified requirements of clinical use are met; meanwhile, the whole structure of the double-cavity catheter is simple, and the production cost can be reduced.

According to an aspect, catheters for embolization of an anatomic vessel of a subject may include a first tube and a second tube, with the first tube defining a first lumen and the second tube defining a second lumen. The second tube may have a second proximal portion, a second distal portion, and a detachment zone therebetween. The first tube may be coupled to the second tube from a proximal portion of the second tube to at least the detachment zone. A distal portion of the second tube may be detachable from the proximal portion of the second tube along the detachment zone.

The double-cavity catheter comprises an operating handle and a catheter, the operating handle is provided with a guide wire guiding channel, a confocal probe guiding channel and a catheter containing cavity, the rear end of the catheter is arranged in the catheter containing cavity, and the interior of the catheter is divided into a guide wire cavity channel and a confocal probe cavity channel. The guide wire cavity channel and the guide wire guiding channel are communicated through a leading-in opening formed in the catheter to form an obtuse angle; a guide block is further arranged on the side, close to the rear end of the catheter, of the leading-in opening. The guide wire is steered through the guide block so as to adapt to the guide wire guide channel and the guide wire cavity channel, the control convenience of the guide wire is improved, and the guide block is integrally arranged in the catheter or the operation handle, so that the whole device is more compact in structure and more convenient to use in the assembling process. The utility model further provides a confocal probe assembly, the confocal probe assembly comprises the double-cavity catheter, a confocal probe, a guide wire and a confocal handle, the confocal probe and the guide wire are inserted into the double-cavity catheter at the same time, convenience of biliopancreatic duct imaging is improved, and operation risks are reduced.

The invention discloses an automatic oral cavity nursing machine for a patient with oral trachea cannula, and relates to the technical field of nursing auxiliary instruments, the automatic oral cavity nursing machine comprises a main machine box, a double-channel pump control system and a main control module are arranged in the main machine box, and an oral cavity dilator with an image acquisition function and a coaxial double-cavity catheter flushing module are arranged on the main machine box; the oral cavity dilator with the image acquisition function comprises an elastic distraction framework, side silica gel clamping seats are fixedly connected to the two sides of the elastic distraction framework, and an image acquisition camera is fixedly connected to the center of the upper side of the elastic distraction framework through a bendable shaping hose; the oral cavity dilator with the image acquisition function and the coaxial double-cavity catheter flushing module are integrated, and intelligent control of the main control module is combined, so that synchronous operation of flushing and suction is achieved. By means of the innovative design, the operation process is simplified, the risk of liquid aspiration by mistake is reduced, parameter setting is more scientific and reasonable, and flexible adjustment can be conducted according to the specific conditions of a patient.

The utility model discloses a uterine cavity perfusion catheter, relates to the technical field of catheters, and aims to solve the technical problem that medicines in a medicine injection channel cannot be utilized in uterine cavity perfusion in the prior art, so that the medicines are wasted. Wherein one side of the double-cavity catheter body is located in the uterine cavity, the other side of the double-cavity catheter body is located outside, the double-cavity catheter body is divided into a drainage pipeline and a medicine injection pipeline, the medicine injection pipeline is slidably connected with a scraping plate through an elastic piece in the side, located in the uterine cavity, of the medicine injection pipeline, and a medicine injection channel with an outlet is formed in the side wall of the medicine injection pipeline, and the distance between the medicine injection channel and the end of the medicine injection pipeline is smaller than the distance between the scraping plate and the medicine injection channel. The outlet is formed in the inner side wall of the medicine injection pipeline, and a protection device is arranged at the end, communicated with the uterine cavity, of the medicine injection pipeline. Through the scraping plate, the protection device, the medicine injection channel, the outlet and the like, medicine adsorbed on the inner wall of the medicine injection pipeline can be scraped and then is matched with the protection device, and the medicine is conveyed to a uterine cavity. The medicine consumption is reduced, and the treatment effect and the treatment efficiency of uterine cavity perfusion of a patient are improved.

The utility model discloses a double-cavity guide pipe injection mold, which comprises an upper mold, a lower mold, a first molding mechanism and a second molding mechanism, the upper mold is provided with a first molding area, the lower mold is provided with a second molding area and a groove for placing an embedded pipe body, the first molding mechanism comprises a first mold body, and the first mold body is rotatably arranged on the lower mold; the first forming mechanism comprises a first mold body and a third mold body, the first mold body is used for forming an arc-shaped hole body of the double-cavity catheter, the second forming mechanism comprises a second mold body and a third mold body, the first mold body is used for forming a linear hole body of the double-cavity catheter, and the second mold body is used for forming an inclined hole body of the double-cavity catheter. The embedded pipe body is arranged through the groove, the arc-shaped pipe body is formed through the first mold body with the rotating function, the linear hole body is formed through the second mold body with the linear motion function, the oblique hole body is formed through the third mold body with the oblique linear motion function, and the pipe body is separated from the corresponding hole body in the demolding process. Therefore, interference with the demolding process of the double-cavity catheter is avoided.

The utility model discloses a single-balloon catheter capable of displaying the position of a balloon. The single-balloon catheter solves the problem that in the prior art, the position of the balloon is inconvenient to observe in the using process of a catheter. The device comprises a supporting tube which is fixed in an intestinal tract and is positioned at the upstream of an anastomotic stoma of the intestinal tract, a double-cavity catheter which is arranged in the supporting tube and is used for discharging contents in the intestinal tract, and an air bag which is arranged on the double-cavity catheter and is sealed with the inner wall of the supporting tube after being inflated, the conveying mechanism is connected with the double-cavity catheter, communicated with the air bag through the double-cavity catheter and used for conveying air, and the display mechanism is arranged between the double-cavity catheter and the air bag and used for displaying the position of the air bag. The display mechanism is arranged on the double-cavity catheter and the air bag, and whether the air bag displaces or not in the using process can be judged through the developing mechanism.

This invention discloses an interventional contrast agent safety injector, comprising an injector housing, an injection actuator, a dual-lumen catheter, a tubing reflux sensing mechanism, and a main unit control unit. The injection actuator, installed within the injector housing, includes a power source and an syringe barrel. The power source drives the syringe barrel piston to move linearly along the axial direction of the syringe barrel body to output the contrast agent from the syringe barrel outlet connector. The dual-lumen catheter includes a dual-lumen catheter body, within which are independently located a main injection chamber and a secondary sensing chamber along its length. The tubing reflux sensing mechanism includes a sensing capillary and a photoelectric liquid level detection component. The sensing capillary sequentially contains a column of normal saline and a sealed air column. The sealed air column converts local pressure changes in the blood vessel into axial displacement of the liquid level. The photoelectric liquid level detection component converts the liquid level displacement into an electrical signal and outputs it to the main unit control unit, which then adjusts the injection flow rate accordingly.

A medical contrast suspension generating delivery apparatus includes a Venturi-agitating tip assembly, a source of pressurized medical carbon dioxide, a source of an iodinated contrast medium, and a dual lumen catheter connecting the Venturi-agitating tip assembly to the source of pressurized medical carbon dioxide and the source of the iodinated contrast medium.

The present disclosure relates generally to the field of medical devices. In particular, the present disclosure relates to modular assemblies, systems and methods for direct visualization and biopsy of peripheral pulmonary nodules. In one example, a modular assembly of the present disclosure may include a dual-lumen catheter attached to a distal end of a main body, a first lumen may extend through the main body, the first lumen contiguous with a first lumen of the dual-lumen catheter, a second lumen may extend through the main body, the second lumen contiguous with a second lumen of the dual-lumen catheter and an attachment member formed within the main body at a proximal end of the second lumen.

The utility model discloses a detection device of abdominal breathing movement curve and diaphragm electromyogram signal collection, include: double -cavity catheter, thin wall low elasticity balloon, three -way valve, pressure sensor and electrode, thin wall low elasticity balloon sets up in the distal end of first channel, three -way valve sets up in the proximal end of first channel, pressure sensor is used for gathering the pressure data in first channel, electrode stretches out from the second channel distal end, and be used for connecting the diaphragm of detection object to gather the electromyogram of diaphragm, electrode is connected with the wire, the wire is along second channel setting and stretches out from the proximal end. The utility model discloses can gather breathing movement curve and diaphragm electromyogram simultaneously, and simple structure and high detection accuracy.