14 results about "Drainage catheter" patented technology

A balloon retaining urinary catheter includes a porous and spongy distal tip. In one method, a polymer is mixed with a sacrificial component, and the mixture is processed to form a tip. When a solvent is applied to the formed terminus, the sacrificial component is eluted from the polymer of the terminus to provide the terminus with a softer porous polymer structure. The tip may be structured to be softer prior to use or to transition to a softer state once in the bladder.

Ventricular catheters and their methods of use are disclosed. In some embodiments, the disclosed ventricular catheters may reduce, or substantially prevent, obstruction of the catheter by astrocytes or other brain tissue due to adhesion and / or growth within the catheter. For example, in some embodiments, the holes and internal lumen of a ventricular catheter may be constructed such that the wall shear stresses applied within the holes and internal lumen of the catheter are greater than a threshold shear stress to prevent cell adhesion and growth within the catheter.

A method for treating a tumor excise site defined by a center and edges is described. The method includes simultaneously exposing the tumor site to radiation containing fluid and pulsating thermally treated fluid, wherein the fluids are separate from each other and confined to a balloon. Also disclosed is a device for treating a tumor excise site defined by a center and edges. The device includes a reversibly deformable container positioned at the center, the container encapsulating thermally treated fluid; a first drainage conduit; and a second radio-isotope containing conduit contacting a second longitudinally extending surface of the first drainage conduit so as to be positioned between the first drainage conduit and the center.

This invention relates to the field of thoracic surgical medical auxiliary devices, specifically a drainage fixation and protection device for thoracic surgical treatment. It includes a mounting frame, a support column fixedly connected to the top of the mounting frame, a support block rotatably connected to the top of the support column, a connecting tube fixedly connected to the top of the support block, a round rod slidably connected to the middle of the top wall of the connecting tube, a pressure tube fixedly connected to the bottom end of the round rod through the top wall of the connecting tube, a transverse plate fixedly connected to the top of the round rod, a first pressure seat fixedly connected to the top of the transverse plate, a transmission mechanism provided on the top wall of the connecting tube, and grooves formed at opposite ends of the top and bottom walls of the mounting frame. A through-groove is formed on the bottom wall of the mounting frame corresponding to the grooves. The advantages of this invention are: it facilitates the fixation of the drainage tube while also providing support, and it facilitates fixing the entire fixation and protection device to the edge of the bed.

The invention belongs to the technical field of medical instruments, and discloses a drug controlled release drainage device for intracranial hematoma, which comprises a drainage catheter, a catheter end, an auxiliary tube and a connecting cylinder, a drug storage tube is arranged in the catheter end, a plurality of groups of prefabricated micropores are formed in a sealing head of the drug storage tube, a drug delivery piston is arranged in the drug storage tube, and the drug storage tube is connected with one end of the auxiliary tube; a driven piston and a driving piston are arranged in the auxiliary pipe, a pipeline between the driven piston and the driving piston is filled with liquid, an adjusting valve is arranged, and a piston push rod on the driven piston is in contact with the dosing piston; a push plate and a lead screw are arranged in the connecting cylinder in a penetrating mode, a fixing rod on one side of the push plate makes contact with the driving piston, the push plate is connected with a compression spring, and the compression spring is connected with a moving block on the lead screw. The screw rod is rotated, the movable block extrudes the compression spring, pressure is stored, and during drug administration, drug administration can be stopped by opening the adjusting valve, pushing the driving piston through the push plate, synchronously moving all the pistons through liquid transmission, discharging the drug in the drug storage pipe and closing the adjusting valve.

The utility model discloses a disposable inner eye surgery conjunctival sac drainage device, relates to the technical field of medical instruments, and comprises a drainage piece and a diversion expansion part, the drainage piece is of a cambered heart-shaped structure fitting the inner side of the canthus of a human body, the front side of the drainage piece is provided with a drainage hole, the diversion expansion part is of a triangular structure, and the drainage hole is communicated with the drainage piece. Due to the fact that the drainage piece of the heart-shaped structure is arranged, the drainage piece can be exactly attached to the canthus portion of a patient, better stability and adaptability are provided, the occupied space of the drainage piece can be reduced through the concave portion of the front side of the drainage piece, and the drainage piece is convenient to use. And the interference on intraocular surgery operation is reduced.

An internal drainage catheter for ascites drainage according to an embodiment has an improved structure so as to allow ascites in a peritoneal cavity to be discharged in urine via a bladder and ensure significant fixation force to a bladder wall based on which the peritoneal cavity and the bladder are separated from each other.

The invention discloses an emulsion oil-water separation device and a separation method.The emulsion oil-water separation device comprises an emulsion inlet and a tank body, the tank body comprises a filler sleeve and a drainage guide pipe, the filler sleeve is fixedly arranged in the tank body in the vertical direction, and the drainage guide pipe is fixedly arranged in the tank body in the vertical direction; an opening in the upper end of the filler sleeve is close to the emulsion inlet, the filler sleeve is filled with first oil-water separation blocks and second oil-water separation blocks, the first oil-water separation blocks and the second oil-water separation blocks are alternately arranged in the length direction of the filler sleeve, and the filling blocks on the uppermost layer and the filling blocks on the lowermost layer are the first oil-water separation blocks; the upper end of the drainage guide pipe is connected with the lower end of the first oil-water separation block, and the lower end of the drainage guide pipe is close to the bottom of the tank body. The emulsion oil-water separation device provided by the invention is simple in structure and convenient to mount, can realize demulsification and oil-water separation of different types of emulsions (O / W type and W / O type), and is high in oil-water separation efficiency.

The utility model discloses a directional lavage drainage catheter, which comprises a catheter body, a catheter head end and a catheter core, a liquid filling cavity is arranged in the catheter body, the liquid filling cavity extends along the axial direction of the catheter body and penetrates through the catheter body, and the catheter head end is connected to the end part of the catheter body and is used for blocking the liquid filling cavity. A liquid filling cavity is formed in the catheter body, a plurality of filling holes are formed in the outer surface of the catheter body, the filling holes are distributed in the circumferential direction and the axial direction of the catheter body at intervals, the filling holes communicate with the liquid filling cavity, an inwards-sunken opening is formed in the outer surface of the catheter core, and the catheter core is inserted into the liquid filling cavity and can move in the liquid filling cavity; the outer surface of the pipe core is used for covering part of the filling holes, and the opening is used for being communicated with the other filling holes. Irrigation and flushing in all directions in the cranium are achieved, and the hematoma removing capacity is improved. Meanwhile, the tube core is located in the liquid filling cavity, the direction can be adjusted according to user requirements, and the lavage pressure is concentrated in the opening direction for efficient lavage.

The utility model discloses a negative pressure adjustable drainage device, including a negative pressure drainage cup, the top of the negative pressure drainage cup is open, and a sealing cover is provided on the top of the negative pressure drainage cup to seal the open mouth, the sealing cover is provided with a drainage catheter connected to the inner cavity of the negative pressure drainage cup, and an adjustment component is also provided on the side of the sealing cover, the adjustment component includes a fixed sleeve fixed to the side of the sealing cover, an adjustment tube is provided inside the fixed sleeve for sealing and rotation, and the bottom of the adjustment tube is sealed. The negative pressure adjustable drainage device can flexibly adjust the internal pressure of the drainage device according to the use requirements, so that the drainage device can effectively drain the accumulated fluid in the patient's body, and when the negative pressure inside the drainage device is insufficient, the negative pressure inside the drainage device can be timely reduced to ensure the effective use of the drainage device. The device has the characteristics of simple structure and low cost, and is suitable for large-scale promotion and use.

The present application relates to a kind of plastic extruders with multi-section temperature control function applied to the technical field of plastic extruder, including extrusion cylinder, feed heating section module, compression heating section module, metering heating section module, heating cylinder piece, temperature control oil cylinder, drainage catheter, communication port, telescopic module, telescopic module, open-close cover, lifting cylinder and pressure piston, the extrusion cylinder of the present application is set to feed heating section module, compression heating section module and metering heating section module, control the flow of heat transfer oil between feed heating section module, compression heating section module and metering heating section module, by heat transfer oil rapid deployment, realize the starting temperature of feed heating section module, compression heating section module and metering heating section module is increased and reduced, and cooperate with the temperature regulation of electric heating ring on heating cylinder piece, then shorten the time to reach target temperature, effectively improve the temperature control regulation efficiency of plastic extruder, then effectively reduce the hysteresis of temperature rise regulation.

The utility model belongs to the technical field of medical apparatus and instruments, and provides an improved three-cavity catheter which comprises a main catheter body, a drainage catheter, a flushing catheter and a filling catheter which are independent are arranged in the main catheter body, and a flushing hole and a liquid filling hole are sequentially formed in the position, close to the front end of the main catheter body, of the main catheter body; the guide head is provided with a urethral catheterization hole communicated with the urethral catheterization cavity; the tube connector comprises a liquid outlet connector communicated with the urethral catheterization cavity, a medicine injection connector communicated with the flushing cavity and a filling connector communicated with the filling cavity; the main balloon is communicated with the filling cavity channel through the liquid filling hole; the auxiliary balloon is arranged at the position close to the rear end of the main balloon body and communicated with the filling cavity so that the expansion state of the main balloon can be displayed synchronously. According to the improved three-cavity catheter provided by the utility model, the auxiliary balloon positioned outside is added, so that the water injection amount of the main balloon can be clearly and intuitively known, and the displacement phenomenon of the catheter caused by insufficient water injection and the discomfort phenomenon of a patient caused by excessive water injection are avoided.

The utility model provides a continuous graded expansion drainage catheter which comprises a main catheter, a first cavity channel and a second cavity channel are formed in the main catheter, a balloon is arranged on the surface of one end of the main catheter, a first connecting pipe and a second connecting pipe are installed on the two sides of the other end of the main catheter respectively, and the first connecting pipe is communicated with the first cavity channel. The second connecting pipe is communicated with the second cavity channel, an adjusting valve is installed on the surface of the first connecting pipe, drainage holes communicated with the through cavity are formed in the positions, located on the two sides of the balloon, of the main catheter, air is injected into the balloon in a segmented mode, the balloon is made to expand continuously, and then graded continuous expansion can be conducted on the narrow section in the mode. The restenosis time is effectively prolonged, the conditions of liver resection, liver transplantation and the like caused by complications are reduced, a guide wire can conveniently penetrate through the through cavity, then surgical operation can be conducted on a patient in the mode, and bile can be drained through the drainage hole in the restenosis process.