37 results about "Drainage catheter" patented technology

The present invention relates to a catheter that includes an elongate body having distal and proximal ends, the elongate body having at least one lumen therethrough, a distal portion of the elongate body having a perimeter. First and second retention members of the catheter are first and second retention members selectively disposed in either an insertion state or a retention state. In the insertion state, the first and second retention members form a distal body defining a central axis, the central axis being generally spaced apart from the perimeter of the distal portion of the elongate body, the distal body and elongate body insertable along a passageway of a mammal. In the retention state, the first and second retention members are selectively disposed in a spaced apart configuration to resist proximal movement of the catheter along the passage of the mammal.

A drainage catheter includes an elongated tubular member and a locking assembly. The locking assembly includes a first protruding element and a collar. The first protruding element is disposed proximal to a port in the tubular member through which a proximal portion of a tension member may exit. The collar is coaxially disposed about the tubular member and has a second protruding element projecting from an interior surface of the collar. The collar is configured for longitudinal sliding movement relative to the tubular member such that the collar may be moved along the tubular member toward the proximal end of the tubular member thereby interacting with the first protruding element and securing the proximal portion of the tension member between the first protruding element and the collar.

A drainage catheter includes an elongated tubular member, a locking assembly engaged with a proximal end of the tubular member, and a tension member for drawing a distal end of the tubular member into a desired configuration. The locking assembly includes a connector, a locking arm, and a locking mechanism. The connector has an exterior surface profile that corresponds with an interior surface profile of the locking arm. The locking arm is pivotably attached to the connector to enable pivoting movement of the locking arm between an unlocked position and a locked position whereby the tension member is secured between the locking arm and the connector when the arm is in the locked position. The locking assembly may alternatively comprise a connector and a sliding sleeve or a connector having a clamping element disposed therein.

The invention discloses a self-adaption encephalic cerebrospinal fluid drainage device which comprises a drainage catheter (1), a connecting catheter (2) and a liquid storage device (3). A drainage controller (6) is arranged on the connecting catheter (2); a pressure sensor (13) is arranged at the front end of the drainage catheter (1) and connected with the drainage controller (6) through a data line (12); the pressure sensor (13) is used for monitoring encephalic pressure and sending monitored pressure information to the drainage controller (6); the drainage controller (6) is used for controlling the drainage speed and drainage amount of liquid in the drainage catheter (1) according to the pressure information sent by the pressure sensor (13). The self-adaption encephalic cerebrospinal fluid drainage device can continuously monitor the encephalic pressure change condition of a patient in real time, the drainage amount can be precisely adjusted dynamically according to the monitoring result, and the drainage amount is precisely measured and controlled through a flowmeter.

A drainage catheter with retractable internal drains for fluid drainage and irrigation. The drainage catheter with retractable internal drains generally includes a primary catheter for insertion within a subject, a lumen within the primary catheter for conducting fluid flow between a source of fluid drainage or irrigation and the subject, and a plurality of selectively retractable and deployable drains in fluid communication with the lumen. Retraction and deployment of the drains within a subject is accomplished remotely via a specially shaped stylet and common drain connector within the primary catheter. The plurality of drains are enclosed within the primary catheter in the retracted state and extend radially outwardly from the primary catheter in the deployed state. In the retracted state, insertion and location of the primary catheter in a subject are facilitated. In the deployed state, expanded and improved drainage and irrigation area and a plurality of fluid flow paths and locations are provided.

The invention discloses a gall bladder ejection puncture outfit to solve the problem that a thick drainage catheter cannot be inserted at a time in the present clinical process of inserting a catheter into the gall bladder. The gall bladder ejection puncture outfit comprises an ejector base catheter, a back gland and a piston, wherein the back gland is arranged at one end of the ejector base catheter, the piston is arranged in the ejector base catheter and can move relative to the ejector base catheter, and one end of the piston extends out of the ejector base catheter and penetrates through the back gland. The end, close to the back gland, of the piston is sleeved with a spring located in the ejector base catheter, and the piston is further provided with a protrusion, wherein the protrusion and the back gland compress the spring together, and the protrusion controls the piston to move relative to the ejector base catheter; the end, far away from the back gland, of the piston is provided with a puncture needle with the needle point located outside the ejector base catheter; the ejector base catheter is internally provided with a locking piece used for preventing the piston from moving relative to the ejector base catheter through the elasticity of the spring. According to the gall bladder ejection puncture outfit, the thick drainage catheter can be inserted at a time, and the fixed-depth puncturing can be achieved during the puncturing process.

A subdural drainage system includes (a) a subdural drainage device having an opening formed therethrough, said subdural drainage device having an upper portion, a body portion, and a lower portion; (b) a housing having an upper portion and lower portion, with said housing connected to said subdural drainage device; said housing movable between (i) a first configuration and (ii) a second configuration; and (c) a stylet positioned inside said housing, said stylet having an upper portion and a lower portion and configured such that said stylet is moved between (i) a withdrawn position with said stylet withdrawn from a portion of said subdural evacuation port device, and (ii) an extended position with said stylet extending through said subdural drainage device such that blockages are disrupted in the subdural drainage device when said housing is moved between said first and second housing configurations; and (e) an external drain opening formed on either said subdural drainage device or said housing.

The invention relates to the technical field of medical equipment, and discloses a drainage catheter fixator for an internal medicine department. The fixator comprises a supporting plate, the two sides of the inner wall of the supporting plate are each fixedly provided with a supporting block, a supporting rod is movably connected to the side face of each supporting block, a torsional spring is fixedly connected to the outer surface of each supporting rod, a positioning plate is fixedly connected to one ends of the supporting rods, a buffer plate is fixedly connected to one end of the positioning plate, and a positioning block is fixedly connected to the side face of the buffer plate. According to the drainage catheter fixator for the internal medicine department, due to the effect of thesupporting plate, the phenomenon that when a honeycomb duct is stressed and bent on the supporting plate, the effect of the honeycomb duct is lowered is avoided, by means of the effect of the supporting rods, the buffer plate can be opened at any time, the honeycomb tube can be fixed conveniently, by means of the effect of the torsional springs, the buffer plate can be automatically bounced off tothe original position, the honeycomb duct is convenient to fix, and by means of the effect of the buffer plate, the honeycomb tube is prevented from being disengaged from a patient body.

A stricture treatment and drainage catheter comprises a drainage lumen supporting a stricture dilator that is changeable between a collapsed position and a plurality of expanded positions. An expansion indicator operatively connects to the stricture dilator and displays an indication if the stricture dilator is in one of the plurality of expanded positions.

A choledochoilluminating drainage device is disclosed, which includes a drainage catheter and at least one optical fiber disposed in or on there. The optical fiber includes at least one light-emitting structure. While the drainage catheter is put into a duct in an organism, light can be emitted out from the light-emitting structure guided by the optical fiber disposed in or on the drainage catheter, passing through the walls of the drainage catheter and the organism's duct, thereby illuminating the organism's duct and the surrounding region.

The invention discloses a percutaneous left heart drainage tube, which comprises a ventricular segment positioned in a left ventricle and an artery segment (1) positioned in an external artery of theleft ventricle, wherein the included angle between the ventricular segment and the artery segment (1) is 160-175 degrees; the ventricular segment consists of an inhalation segment (3) and a non-inhalation segment (2); the inhalation segment (3) is positioned at the tail end; a plurality of inhalation side holes (4) are formed in the wall of the inhalation segment (3); a plastic spring ring (7) sleeves outside the non-inhalation segment (2) and the artery segment (1); the percutaneous left heart drainage tube can be inserted through the axillary artery or the carotid artery, the operation flowis simplified, and the ventricular assist device can be coordinated to achieve left heart drainage. The drainage catheter is directly arranged in the left ventricle under the guidance of cardiac ultrasound or DSA through the peripheral vessel, and high-risk invasive operations such as atrial septum puncture or ventricular opening and the like are not needed; in addition, the percutaneous left heart drainage tube can effectively drain left ventricle blood, and the ventricular load is reduced through the catheter in ventricular assistance.

The invention discloses a method for internal compression hemostasis after minimally invasive breast lump rotary varicotomy and a hemostatic balloon. A tissue defect area caused by the minimally invasive rotary varicotomy can be effectively and reliably filled, and is internally compressed for hemostasis instead of the conventional common external compression hemostasis method, and reliable and long-lasting hemostasis effects are achieved. The hemostatic balloon comprises three parts, namely a liquid-filled balloon 1, a double-cavity catheter 2 and a catheter core 7. After the minimally invasive breast lump rotary varicotomy, the catheter core 7 is arranged in a drainage catheter cavity 3, the front end of the double-cavity catheter 2 is arranged in an operative incision, and reaches the tissue defect area, and when the balloon 1 is observed and regulated into a satisfied depth by virtue of B ultrasonic examination, the balloon 1 is filled with normal saline through a liquid filling catheter cavity 4 until the tissue defect area is completely compressed. After an injector is removed, a self-closing liquid filling cover 6 is closed, and the balloon 1 is in a continuously filled state. A small amount of normal saline seeps, and can flow out of the body through the drainage catheter cavity 3. When the injector is removed, the normal saline in the balloon 1 is sucked out until the balloon 1 completely returns to a preoperative state.

The invention discloses a pressure-measuring drainage catheter and a pressure measuring method. The drainage catheter comprises a drainage catheter main body; a recess is arranged in the side wall on the end side of the drainage catheter main body; an inelastic sealing film which is a loosened film is arranged at the opening of the recess; an enclosed pressure measuring cavity is formed by the sealing film and the recess; the pressure measuring cavity communicates with a liquid-filling thin tube and a pressure-measuring thin tube; the liquid-filling thin tube and a pressure-measuring thin tube are lead out from the drainage catheter main body wall; an outlet end of the pressure-measuring thin tube is connected to a pressure measuring scale or an electronic pressure gauge; and a port of the liquid-filling thin tube is connected to a liquid-filling joint. Compared with the prior art, the pressure-measuring drainage catheter is simple in structure and low in cost, the pressure-measuring tube is always in a smooth state, the intracranial pressure (ICP) can be sensitively shown, and the measurement is accurate.

The invention relates to a medical irrigation and washing device, in particular to a disposable urinary catheter connector for intravesical instillation and an application thereof. The invention comprises a drainage urinary catheter and a connecting tube, wherein the drainage urinary catheter and the connecting tube are connected through a three-way valve. Compared with the prior art, the structure can smoothly inject drugs into the drainage catheter through the connection of the three-way valve. The application of disposable urinary catheter connector for intravesical instillation is carriedout according to the following steps: when three ports of three-way valve are communicated with each other or with each other, drugs and liquids are injected into the body or drained out of the body according to the needs of treatment and nursing care.

The invention discloses a minimally invasive upper and lower vena cava and coronary sinus drainage catheter, which comprises a vein drainage pipeline with a heparin coating and a coronary sinus blocking balloon; side holes of two areas are formed in the vein drainage pipeline; furthermore, the side holes of the two areas are located in the mirror surface position of an upper cavity and the mirror surface position of a lower cavity respectively to achieve the effect of fully draining blood; the vein drainage pipeline located in the upper vena cava position and the vein drainage pipeline located in the lower vena cava position are sleeved with an upper cavity blocking balloon and a lower cavity blocking balloon respectively; the vein drainage pipeline located in the middle of an upper vena cava blocking balloon and a lower vena cava blocking balloon is connected with a side pipe; the side pipe is sleeved with the coronary sinus blocking balloon; the upper cavity blocking balloon, the lower cavity blocking balloon and the coronary sinus blocking balloon are all connected with one-way valves to achieve inflation of injected gas; and the minimally invasive upper and lower vena cava and coronary sinus drainage catheter has the following technical features that: the number of intubations and the time of suture separation can be reduced; additional exploration and hemostasis are not needed; the operation space and efficiency are effectively increased; and the clear view can be ensured.

The invention relates to a multifunctional closed drainage catheter, and belongs to the technical field of medical instruments. The drainage catheter is mainly composed of a handheld part, a drainage tube and a toggle clip, wherein a through hole is formed in the middle of the handheld part, a groove is formed in one side wall, is the same as the through hole in direction and can fix an infusion pipeline or a flushing pipeline, a transverse clamping groove is formed in the top edge of the groove and can fix the infusion pipeline or a flushing pipeline water stop, one end of the through hole in the handheld part is connected with the drainage tube, the other end of the handheld part is connected with a negative pressure connector, and the toggle clip used for fixing the infusion pipeline or the flushing pipeline is arranged on the wall of the drainage tube. The multifunctional closed drainage catheter is convenient to operate, simple in structure and good in flushing and drainage effect.

The invention discloses a balloon for a dilating catheter. The balloon comprises a balloon body, the humeral angle alpha of the two ends after the balloon body expands is 30 degrees, an L section protruding part is formed, and provided with an L5 section, an L4 section, an L3 section, an L2 section and an L1 section along the center axis of the balloon body from the tail end, the L5 section, the L4 section, the L3 section, the L2 section and the L1 section are stacked in sequence, and the calculation formula of the stacked area between every two adjacent sections is that the stacked area between the section and the last section is equal to the product of 0.354 and the surface area of the last section. By means of the balloon for the dilating catheter, the expanding diameter of the two endsof the balloon can be precisely controlled, the situation that the balloon is deformed when excessively pressurized is avoided, and thus the operation safety is improved.

The invention belongs to medical instruments and relates to a pleural irrigation drainage catheter. The pleural irrigation drainage catheter is suitable for treating patients with empyema. Irrigation and drainage are basic therapies of empyema; manual irrigation and drainage via a single pleural tube easily causes external infection to the pleural cavity; irrigating liquid is bolus-injected in a short time, the pleural membrane is injured, and germs spread; patients feel pain from repeated manual operations each day, and clinical work is huge. The pleural irrigation drainage catheter is simple to indwell; pleural irrigation and pleural drainage can be simultaneous; the pleural irrigation drainage catheter can be removed when irrigation is not required, and closed pleural drainage is continued; a pipeline is constantly closed, drainage is performed in a single direction, and pleural infection is avoided; pleural irrigation and drainage is continuous, clinical treatment is efficient, and workload is low; the pleural irrigation drainage catheter is suitable for abscess cavities different in size.

The invention relates to the technical field of drainage catheters, in particular to an embedded chest drainage catheter. The chest drainage catheter comprises a drainage catheter and a butterfly-shaped adhesive plaster installed on the surface of the drainage catheter. A plurality of projections are disposed nearby one end of the drainage catheter, and one side, close to the adhesive tape, of a connection part is provided with a plurality of clamping grooves. According to the chest drainage catheter, the projections of the drainage catheter are clamped in the slots of the butterfly-shaped adhesive plaster, and then the butterfly-shaped adhesive plaster is pasted on skin, thereby solving a problem that a patient needs to be painful because a conventional catheter can be fixed under the condition of one-needle seaming on the skin after placement. Meanwhile, when the catheter is pulled out, the drainage catheter can be directly pulled out, and can avoid the damages to the tissues like asingle-J catheter and even avoid the scratch on the artery.

The invention discloses a nasal gallbladder bile drainage catheter with an expansile saccule, wherein an elastic loop pipeI, an elastic loop pipe II, a drainage pipe segment I, a drainage pipe segmentII, a drainage pipe segment III, and a drainage pipe segment IV are interconnected and arranged on the nasal gallbladder bile drainage catheter from stem to stern. The drainage pipe segment I is shaped arc-like, and the arc opens towards the elastic loop pipe I. The drainage pipe segment II is shaped curved and forms a 'Sigma' shape with the final segment of an arc pipe segment II. The drainage pipe segment III is arc-shaped, and the arc opens towards an arc pipe segment I. The drainage pipe segment IV is shaped like a straight line. Bile drainage orifices are arranged on the elastic loop pipe I, the elastic loop pipe II, and the final segment of the arc pipe segment II. A saccule is arranged on the exterior wall of the head segment of the arc pipe segment II. The nasal gallbladder bile drainage catheter with the expansile saccule involves five curves, conforms to five physiological curves including gallbladder cavity, gallbladder duct to common bile duct, common bile duct to duodenum, duodenum to gastric antrum, greater gastric curvature, and has a good comfort level.