146 results about "Drainage catheters" patented technology

A histotripsy therapy system configured for the treatment of brain tissue is provided, which may include any number of features. In one embodiment, the system includes an ultrasound therapy transducer, a drainage catheter, and a plurality of piezoelectric sensors disposed in the drainage catheter. The ultrasound therapy is configured to transmit ultrasound pulses into the brain to generate cavitation that liquefies a target tissue in the brain. The drainage catheter is configured to detect the ultrasound pulses. An aberration correction algorithm can be executed by the system based on the ultrasound pulses measured by the drainage catheter to automatically correct for an aberration effect caused by the ultrasound pulses passing through a skullcap of the patient.

The invention relates to the technical field of medical instruments, in particular to an intelligent cerebrospinal fluid drainage monitoring system and method. The system comprises a drainage catheter, a drainage bag and a monitoring terminal, a high-precision pressure sensor, an ultrasonic flow sensor, a data acquisition and transmission module and an intelligent monitoring decision module are integrated, and corresponding pressure analog signals are acquired, calibrated and output in real time through the high-precision pressure sensor; a flow analog signal corresponding to compensation output is collected in real time through an ultrasonic flow sensor; synchronously acquiring the pressure analog signal and the flow analog signal through an ADC (Analog to Digital Converter) through a data acquisition and transmission module to generate pressure data and flow data, and transmitting the pressure data and the flow data to a monitoring terminal; and the monitoring terminal calculates the average sliding pressure and the drainage efficiency and decides to generate a multi-stage alarm signal corresponding to cerebrospinal fluid drainage. Accurate data support can be provided for neurosurgery cerebrospinal fluid drainage assistance by means of a high-precision sensor and intelligent monitoring processing.

The utility model discloses an intracavity negative pressure device for treating upper digestive tract fistula, which comprises a drainage catheter, and two ends of the drainage catheter are respectively a suction end and a negative pressure end connected with the negative pressure device; a liquid suction hole adjacent to the suction end is formed in the side wall of the drainage catheter, and a sponge body wrapping the liquid suction hole is arranged on the outer wall of the drainage catheter. The sponge body comprises a first sponge body and a second sponge body with the aperture larger than that of the first sponge body, the first sponge body wraps the suction end, and the second sponge body is arranged between the first sponge body and the negative pressure end. The two cavernous bodies with different pore diameters are arranged in a partitioned mode, the first cavernous body with the small pore diameter absorbs effusion at the wound of the upper digestive tract fistula in time, granulation tissue hyperplasia is promoted, recovery of a patient is facilitated, and the treatment period is shortened; the second sponge body with the large hole diameter enables secretions with large viscidity to be adsorbed in time, the sponge body and the drainage catheter are not prone to being blocked, the service life of the negative pressure device is prolonged, and the replacement frequency of the device is reduced.

The utility model provides a self-discharging type double-helix biliary stent, and belongs to the technical field of medical drainage catheters. Comprising a stent body, and the stent body comprises a connecting pipe, a first spiral pipe and a second spiral pipe; the connecting pipe is used for fixedly connecting the first spiral pipe and the second spiral pipe; the first spiral tube is mounted on one side of the connecting tube and used for draining bile; the second spiral pipe is installed on the side, away from the first spiral pipe, of the connecting pipe. Compared with an existing double-pigtail stent or a self-discharging type biliary tract spiral stent, the spiral structure of the two sets of spiral tubes can better adapt to the physiological form of the biliary tract, stable fixation is formed, the risk that an original stent with one end being of a vertical structure possibly pierces the intestinal wall is avoided, and the intestinal tract can be more stably fixed. Due to the arrangement of the self-discharging double-helix biliary stent, convenience is provided for taking out the stent subsequently.

The drainage catheter device is composed of a soft drainage tube, a homogeneous transparent body and a visual module based on integration of a light source and a camera, the head end of the homogeneous transparent body is arc-shaped, the tail end of the homogeneous transparent body is flat and is matched with and connected with the diameter of the drainage tube, and the length of the transparent body is larger than or equal to the object distance of the visual module. One or more side holes are formed in the side face, close to the tail end of the transparent body, of the drainage tube, and the side holes are drainage holes of the drainage tube. According to the drainage catheter device, a one-cavity dual-purpose using method is adopted, the drainage catheter device can be used as a visual cavity and can also be used as a drainage cavity, it can be guaranteed that the diameter of the soft drainage catheter body is small, and trauma to brain tissue is smaller.

The invention discloses a thoracic surgery pulmonary infection effusion drainage device and belongs to the technical field of medical instruments, the thoracic surgery pulmonary infection effusion drainage device comprises a drainage catheter structure, a filtering structure and a connecting assembly, the drainage catheter structure comprises an insertion tube, the two ends of the insertion tube are connected with a fixing tube and a hemispherical end respectively, and a partition plate is arranged in the insertion tube and the fixing tube; a plurality of drainage holes are formed in the end, close to the hemispherical end, of the insertion tube in the circumferential direction, and a medicine feeding hole is formed in the portion, above the drainage holes, of the insertion tube and communicated with the monitoring cavity. By means of the semispherical end and the drainage hole of the drainage catheter structure, lung tissue is prevented from being scratched when thoracic wall puncture is conducted, the lung tissue damage rate can be reduced to be smaller than or equal to 0.5%, drainage, pressure monitoring and drug administration are achieved through the double-cavity structure, one-time puncture is completed, and the pain of a patient is relieved; by arranging the partition plate, the drainage cavity and the monitoring cavity are isolated, liquid medicine is prevented from polluting an effusion sample, and the infection risk is reduced.

A histotripsy therapy system configured for the treatment of brain tissue is provided, which may include any number of features. In one embodiment, the system includes an ultrasound therapy transducer, a drainage catheter, and a plurality of piezoelectric sensors disposed in the drainage catheter. The ultrasound therapy is configured to transmit ultrasound pulses into the brain to generate cavitation that liquefies a target tissue in the brain. The drainage catheter is configured to detect the ultrasound pulses. An aberration correction algorithm can be executed by the system based on the ultrasound pulses measured by the drainage catheter to automatically correct for an aberration effect caused by the ultrasound pulses passing through a skullcap of the patient.

The utility model discloses a multifunctional biliary tract internal and external drainage tube combination device applied to a patient suffering from hilum cholangiocarcinoma. A drainage catheter is transited from a shaping area and an elastic cabin area to an internal drainage area to form a cylindrical cone; side holes are formed in the inner drainage area and the shaping area; a marker point is arranged between the inner drainage area and the missile cabin area, the missile cabin area is distributed between the inner drainage area and the shaping area, a one-way valve is arranged at the contact position between the shaping area and the missile cabin area, a hole channel is formed in the outer wall, extending into the marker point from the missile cabin area along the one-way valve, of the missile cabin area, and the hole channel forms a missile cabin in the missile cabin area. The magazine is used for placing radioactive particles; the hard support is used in cooperation with the drainage catheter, the hard support penetrates into the outer drainage area and then is pulled to the end of the inner drainage area, and the curled part of the shaping area of the hard support is straightened. The utility model can realize internal and external drainage and achieve the purpose of local tumor treatment, and is simple and convenient to operate and easy for medical staff to use.

The invention relates to an instrument for transferring cerebrospinal fluid in a ventricle into a body cavity of other parts of a human body, and particularly discloses a cerebrospinal fluid drainage catheter component and a drainage system.The cerebrospinal fluid drainage catheter component comprises a catheter body, a plurality of rows of main long holes which extend in the circumferential direction and are distributed at intervals in the axial direction are formed in the wall of the catheter body, and a plurality of drainage holes are formed in the main long holes; a plurality of protruding parts are arranged on the two linear hole walls of the main long hole so that the main long hole can be divided into a plurality of micro holes. The pipe wall occupied by each row of main long holes is a first section, and the pipe wall between each two adjacent rows of main long holes is a second section; the driving component is used for driving one of every two adjacent second sections to axially move relative to the other second section, so that one end, in the circumferential direction, of the main long hole axially moves relative to the other end of the main long hole, and the two linear hole walls of the main long hole generate relative dislocation movement in the circumferential direction; therefore, the protruding part disturbs the interior of the main long hole.

The utility model discloses a biliary tract inside and outside drainage device which comprises a drainage catheter, a fixing stay wire and a hard sleeve. The drainage catheter is composed of an inner drainage area, a narrow section covering area, a shaping area and an outer drainage area, and the interior of the drainage catheter is of a hollow structure. One end of the inner drainage area is designed into a cylindrical cone; a clamping table is arranged at one end of the outer drainage area and used for connecting a cap or a drainage bag; side holes penetrating through the inner cavity are formed in the outer walls of the inner drainage area and the shaping area; a marker point is arranged between the rear end of the side hole of the inner drainage area and the narrow section coverage area; the shaping area is curled into a loop in a natural state, and the shaping area can be straightened through the hard sleeve; the narrow section coverage area is distributed between the inner drainage area and the shaping area; the fixing stay wire comprises a fixing piece and a stay wire, and the tail end of the stay wire is connected with the fixing piece. The drainage catheter main body adopted by the utility model is made of a material with good biocompatibility; and internal drainage and external drainage can be realized. Multiple side holes are formed in the middle and the head end of the drainage tube, sufficient drainage is promoted, and infection risks are reduced.

The invention relates to the field of drainage catheter auxiliary instruments, in particular to a pendulum type anti-slip surgical drainage catheter fixator which comprises a base body and a carrying disc, the carrying disc is provided with one or more caulking grooves used for allowing drainage catheters to be embedded therein, and clamping pieces used for clamping the drainage catheters are arranged in the caulking grooves; the carrier disc can rotate from an initial position to two sides around a first axis relative to the base body so as to form an arc-shaped rotating track, the maximum rotating angles of the carrier disc rotating to the two sides relative to the base body do not exceed 90 degrees, and in the initial position, the extending direction of the caulking groove is perpendicular to the connecting line of the two ends of the arc-shaped track; the attachment is used to attach the base to a human body. The drainage catheter can be fixed, and when the drainage catheter is pulled, the carrying disc can rotate adaptively, so that the drainage catheter is not prone to slipping off, and the occurrence rate of non-planned catheter pulling is reduced.

The invention belongs to the technical field of nursing auxiliary tools, and discloses a stoma nursing device for gastrointestinal surgery, which comprises a stoma base, a fixing bellyband is sleeved on the stoma base, a drainage catheter is arranged in the stoma base, and the stoma nursing device further comprises a mistaken pulling prevention buffer piece arranged on the fixing bellyband and used for buffering and protecting the drainage catheter; the mistaken pulling prevention buffering piece comprises a fixing sleeve fixedly connected to one side of the fixing bellyband. A buffering structure is formed by the rotating rod and the volute spiral spring, when the drainage catheter is pulled by mistake, the cloth belt rotates along with the rotating rod to be released, traction external force is buffered through elasticity of the volute spiral spring, and damage caused by direct traction of the stoma is avoided; the mounting sleeve and the rotating plate lock the drainage catheter through the elastic cushion and the baffle ring to prevent the drainage catheter from moving and falling off; meanwhile, a certain pulling force is only formed on the fixing bellyband during pulling, the stoma base cannot be affected, displacement and falling are avoided, smooth drainage is guaranteed, and the hidden danger of leakage caused by loosening is reduced.

The craniocerebral three-channel puncture drainage catheter comprises a drainage tube and a puncture needle, the drainage tube is of a hollow rod-shaped structure, one end of the drainage tube in the length direction is a puncture end, the other end of the drainage tube is a drainage end, the drainage end is of an open structure and communicates with the interior of the drainage tube, a drainage groove is formed in the side wall of the drainage tube, and the drainage groove communicates with the interior of the drainage tube; the drainage groove is in a long strip shape and is formed in the length direction of the drainage tube, the puncture needle is matched with the interior of the drainage tube and the drainage groove, the puncture needle is inserted into the drainage end of the drainage tube and fills the interior of the drainage groove, drainage of different layers of parts can be completed by puncturing the drainage catheter, the use environment is increased, and blocking in the drainage process is avoided.

A method of manufacturing a medical device includes forming a drainage conduit for removing fluids from a patient and forming one or more flexible delivery conduits for delivering medication. The delivery conduits are attached to and detachably disposed in channels on an exterior surface of the drainage conduit, each being substantially flush with the surface and peelable at one or both ends. The channels may partially surround the delivery conduits and include lips or friction features for retention. The method may include forming multiple channels, permanently attaching portions of the delivery conduits, and providing drainage holes along a length of the drainage conduit. Additional features may include attaching luer locks to the delivery conduits, constructing the conduits from flexible materials, and fabricating components via extrusion. Optional design variations include concentric delivery conduit placement, non-circular cross-sections, and threading to enable suturing or attachment to other medical components or devices.

The present invention discloses a drainage catheter with pressure monitoring, which relates to the field of medical devices, including a catheter, wherein a first through hole is provided on the tube wall at the front end of the catheter, and a fixed tube is fixedly connected inside the catheter, a second through hole is provided at the position of the fixed tube corresponding to the first through hole, a sliding tube is also included, the sliding tube is slidably connected to the fixed tube, and a third through hole corresponding to the first through hole is provided on the side wall, and a sliding plate is also included, the sliding plate is used to press the liquid in the fixed tube out of the catheter. The present invention uses a pull rope to pull the sliding tube to clear the through hole on the catheter, and at the same time, when the sliding plate connected to the sliding tube moves, the through hole of the catheter is backflushed by the reverse flow of liquid, and the through hole at the front end of the catheter can be cleared by intermittently pulling the pull rope, effectively avoiding the through hole at the front end of the catheter from being blocked, so that the operation can be carried out smoothly.

The utility model discloses a negative pressure suction ball for a surgical drainage catheter, which comprises a negative pressure ball, the top of the negative pressure ball is connected with a first connecting tube and a second connecting tube, the upper end of the first connecting tube is provided with a first one-way valve, the upper end of the first one-way valve is provided with an air outlet tube, and the upper end of the second connecting tube is provided with a second one-way valve. A liquid inlet pipe is installed at the upper end of the second one-way valve, a connecting cylinder is connected to the bottom of the negative pressure ball, a liquid drainage assembly is connected to one side of the connecting cylinder, and a sampling pipe is detachably installed on the bottom face of the connecting cylinder. After accumulated liquid enters the connecting cylinder, the accumulated liquid in the connecting cylinder can firstly enter the sampling pipe until the sampling pipe is filled, the accumulated liquid in the negative pressure ball is discharged through the liquid discharging assembly when the liquid needs to be discharged, the accumulated liquid in the sampling pipe cannot be discharged, and the sampling pipe can be conveniently screwed off for detection at any time.

The invention provides a thoracic cavity pipeline fixing device which comprises two oppositely-arranged application pieces, a skin sticking layer is arranged on one side of each application piece, semicircular through holes are formed in the middles of the opposite sides of the two application pieces, and a semicircular fixing pipe is arranged at the position, corresponding to the semicircular through holes, of each application piece in the direction away from the skin sticking layer. The two semicircular fixing pipes can form a complete fixing sleeve, external threads are arranged on the outer side of the fixing sleeve, the fixing sleeve is in threaded connection with a threaded clamping sleeve, and each semicircular fixing pipe is provided with a plurality of movable grooves. An elastic threaded clamping strip in threaded connection with the threaded clamping sleeve is arranged on the side, away from the corresponding application piece, of each movable groove, and the end, facing the application piece, of each elastic threaded clamping strip inclines outwards. The drainage tube is directly clamped and fixed at a wound, loosening and pulling caused by shaking of the drainage tube are not likely to happen, and the clinical requirement for long-term, stable and safe fixing of the chest drainage catheter is met.

The utility model relates to the technical field of pipeline leaking stoppage, in particular to an under-pressure fastening leaking stoppage which comprises a U-shaped bolt, a clamping plate is arranged on the left side of the U-shaped bolt, and an arc-shaped groove is formed in the middle of the right side of the clamping plate. A drainage guide pipe is fixedly connected to the middle of the right side of the U-shaped bolt, a blocking mechanism is arranged on the side, close to the clamping plate, of the drainage guide pipe, and a direction adjusting mechanism is arranged on the right side of the drainage guide pipe. Driving sleeves are symmetrically arranged in the two ends of the clamping plate, and a synchronous rotating mechanism is arranged between the clamping plate and the driving sleeves. By means of the synchronous rotating mechanism, synchronous rotation of the two driving sleeves is achieved, it is ensured that the two sides of the clamping plate are evenly stressed, the problems that in a traditional method, two nuts need to be tightened in stages, and torque is uneven are thoroughly solved, and sealing reliability and operation efficiency are remarkably improved.

The invention provides a urine volume monitoring system which solves the problem that the monitoring precision of automatic urine volume monitoring is usually influenced by the shaking of a pipeline of a drainage system. The system comprises a drainage catheter, an intelligent monitoring tube clamp, a urine bag and a bedside monitoring terminal, the intelligent monitoring tube clamp is used for being clamped on the tube wall of the drainage catheter, and an ultrasonic sensor, an optical color monitor and a liquid drop detection sensor are sequentially arranged in the intelligent monitoring tube clamp in the liquid flowing direction and attached to the tube wall of the drainage catheter. The ultrasonic sensor, the optical color monitor and the liquid drop detection sensor are all in communication connection with the bedside monitoring terminal. The bedside monitoring terminal solves the problem that a common pressure sensor or a gravity sensor is easily interfered by shaking of a pipeline through an ultrasonic sensor, extracts and identifies signal characteristics of bubbles from original signals of the ultrasonic sensor, compensates contained bubble data, avoids calculation distortion of accumulated urine volume, and improves the accuracy of calculation. And the workload and personal error of nurses are greatly reduced.

The invention discloses a pressurizing flushing device for hyperthermic intraperitoneal perfusion chemotherapy, and relates to the technical field of medical instruments. Comprising a puncture catheter and a multidirectional flow guide nozzle, the puncture catheter comprises a catheter body, multiple sets of supporting cavities are formed in the catheter body in the length direction, the supporting cavities are communicated through second air inlet channels, and the supporting cavities are of an arc-shaped structure; the end part of the guide pipe body is connected with a multidirectional flow guide nozzle; one end of the nozzle main body is connected with a drainage guide pipe; the drainage catheter is used for connecting a chemotherapy pump machine; the nozzle body comprises a sprayer and a connecting pipe. The other end of the connecting pipe is connected with the drainage catheter; a plurality of through holes are formed in the spray head; and a rotor is rotationally arranged in the connecting pipe. The catheter is prevented from being bent and collapsed under the action of external force such as extrusion of visceral organs in the abdominal cavity and body position change, and it is ensured that a liquid medicine conveying channel is smooth; in addition, the contact uniformity of the liquid medicine and the abdominal cavity wall, especially the peritoneal micro transfer focus, is obviously improved.

The application discloses a kind of infiltration auxiliary hydrophilic coating drainage catheter related to drainage catheter technical field.It includes the adhering plate, the adhering plate is provided with through-hole, the adhering plate is provided with the infiltration shell in its through-hole, the infiltration shell is provided with infiltration hole, the infiltration hole of the infiltration shell is slidably connected with catheter, the infiltration shell is provided with the liquid guide hole being communicated with the guide groove, the adhering plate is slidably connected with the connecting pipe being communicated with the liquid guide hole of the infiltration shell, the connecting pipe is communicated with the liquid storage sac at the end away from the infiltration shell.The hydrophilic liquid in the liquid storage sac is made into the guide groove by extruding the liquid storage sac, the hydrophilic liquid is filled in the lower side of the guide groove, and the hydrophilic liquid is immediately contacted with the surface of the catheter and infiltrated, so that the risk of infection of the patient's incision is reduced.

The utility model relates to the technical field of medical instruments, in particular to a multifunctional medical drainage catheter fixing device which comprises a body, the top of the body is fixedly connected with a clamping assembly, and the top of the clamping assembly is fixedly connected with a catheter fixing and clamping assembly. The stress release sections at the two ends of the flexible rubber clamping groove are matched with the R angles added at the ports to further release stress, so that the stress is released through the stress release sections and the R angles of the flexible rubber when the drainage catheter is bent, the stress is not concentrated at one point, and the stress release structure is added at the position, extending out of the catheter fixator, of the drainage catheter. The drainage catheter fixing mechanism can prevent the drainage catheter from being bent and flattened due to stress concentration, the U-shaped buckle is utilized to enable the elastic wall to be lengthened and the needed pressing force to be smaller, and therefore the drainage catheter fixing mechanism can be used in a more labor-saving mode, and the drainage catheter can be fixed by adjusting the buckle position structure of the drainage catheter fixator, moving the buckle upwards and prolonging the elastic wall of the buckle. The use operation space is enlarged, and the operation of medical staff is facilitated.

The utility model discloses a drainage catheter melting head forming device which comprises a base, a translation driving mechanism, a mold base, a core needle base and a core needle. The translation driving mechanism is arranged on the base. The mold base is arranged on the base and located at the end, in the translation direction, of the translation driving mechanism. And the core needle seat is in transmission connection with the translation driving mechanism. The core needle is provided with a large-diameter body and a small-diameter body, the large-diameter body is connected to the core needle base, the small-diameter body is connected to one end of the large-diameter body, and a reinforcing core limiting table is formed between the large-diameter body and the small-diameter body. The translation driving mechanism can drive the core needle base to drive the core needle to get close to or away from the mold base. According to the drainage catheter head melting forming device, in the drainage catheter head melting process, one end of the reinforcing core can abut against the limiting table, the translation driving mechanism drives the core needle base to move horizontally to be close to the mold base, and when the head end of a catheter is pushed into a heated mold, the limiting table limits the reinforcing core to move backwards in the axial direction; and the end part of the produced drainage catheter is good in structural hardness, good in product quality stability and few in defective products.

The invention relates to the technical field of medical instruments, in particular to an intestinal obstruction catheter anti-reflux drainage device. The device comprises a three-way connector, a first drainage catheter communicated with a port in one end of the three-way connector, a spiral drainage tube communicated with a port in one end of the three-way connector, a one-way valve communicated with a port in one end of the three-way connector and a multi-cavity collection bag communicated with the spiral drainage tube. A plurality of elastic valves are arranged on the inner tube wall of the first drainage catheter in the circumferential direction of the first drainage catheter, each valve is provided with a pair of side edges and a lower edge, and the lower edges of the valves are fixedly connected with the inner wall of the first drainage catheter. According to the intestinal obstruction catheter anti-reflux drainage device, the problems that in existing intestinal obstruction drainage, intestinal contents in a drainage tube are prone to reflux, and the reflux solving operation is tedious are solved.

The utility model discloses an antibacterial wound dressing which can effectively inhibit the growth of bacteria on a wound surface and ensure the comprehensiveness and durability of the antibacterial effect. The antibacterial instillation lavage type negative pressure drainage wound protecting device can accelerate wound healing, reduce infection risks and bring better treatment experience and rehabilitation effect to patients. The antibacterial instillation and lavage type negative pressure drainage wound protecting device comprises a skin sealing pasting film, a medical foam sponge, an antibacterial amino acid group polymer foam sponge and a dressing pad which are sequentially arranged from top to bottom; a silica gel drainage catheter is arranged on the medical foam sponge; and a silica gel instillation lavage microtube is arranged between the antibacterial amino acid-based polymer foam sponge and the dressing pad. By adopting the antibacterial instillation lavage type negative pressure drainage wound protecting device, the infection risk can be reduced, and the treatment effect and the satisfaction degree of a patient can be improved.

The utility model discloses a drainage catheter measuring device for surgical operation, which relates to the technical field of drainage catheter measuring devices and comprises a drainage tube body, a negative pressure suction ball body, a drainage liquid measurer body and a drainage bag body, and the bottom end of the drainage tube body is fixedly connected with the top end of the negative pressure suction ball body. A first connecting pipe is fixedly connected between the bottom end of the negative pressure suction ball body and the top end of the drainage liquid measurer body, a second connecting pipe is fixedly connected between the bottom end of the drainage liquid measurer body and the top end of the drainage bag body, and the bottom end of the drainage bag body is fixedly connected with a liquid discharging pipe. And the outer wall of the negative pressure suction ball body is fixedly connected with a pressure control valve. The negative pressure suction ball body is used for keeping negative pressure, the drainage liquid measurer body is used for measuring drainage amount, the measured drainage liquid is squeezed into the drainage bag body, the drainage amount can be accurately recorded at any time in each shift, the change of the illness state of a patient can be closely observed, the chance of infection is reduced, and the workload of workers is also reduced.

The utility model discloses an opening and closing structure of a catheter, a clamping structure and a drainage catheter, the opening and closing structure of the catheter comprises a hold-down piece rotatably arranged on a catheter seat, the hold-down piece comprises a hold-down portion, the hold-down piece is arranged and the hold-down portion is positioned on one side of the catheter to conduct the catheter, and the hold-down portion is held down on the catheter to close the catheter by rotating the hold-down piece; the device can further comprise a blocking piece, the blocking piece is arranged on the guide pipe seat, the blocking piece is used for blocking the pressing and holding part from continuously rotating towards the guide pipe after the guide pipe is closed, the blocking piece comprises check blocks, and the check blocks are arranged on one side of the rotating center of the pressing and holding piece and one side of the pressing and holding part. The opening and closing structure of the catheter is not prone to falling off from the catheter base, and the catheter can be conveniently and effectively closed and opened.

The present invention operates to significantly reduce over or under drainage of cerebrospinal fluid (CSF) from the brain or spinal cord using an extraventricular drain (EVD) in the brain or lumbar drainage device (LDD) and automated intracranial pressure (ICP) monitoring. The present invention attaches the drainage catheter of the EVD to a flow controller or valve which controls the flow of CSF from the drainage catheter and is electronically controlled by a stepper motor communicating with a pressure transducer receiving pressure signals indicating an ICP without the need for constant manual re-leveling.

The utility model relates to the technical field of medical instruments, in particular to a chest drainage catheter capable of being bent and shaped, which comprises a drainage catheter, a medical proof fabric is arranged on the drainage catheter, the drainage catheter is adhered and fixed on the skin on the surface of the chest wall of a patient through the medical proof fabric, and an opening is arranged between two ribs inside the chest wall of the patient. One end of the drainage catheter is inserted into the thoracic cavity through the opening. According to the thoracic cavity drainage catheter capable of being bent and shaped, the shape of the drainage catheter is kept unchanged through shaping of the shaping strips, the drainage catheter can be shaped at a proper drainage position in an operation, and the drainage catheter in the chest cannot shift along with respiratory movement of the thoracic cavity through fixing of the fixing rope and the medical proof fabric; and the drainage catheter outside the chest can also be shaped to be more attached to the chest wall, so that the compression of the drainage catheter on the insertion opening is reduced, and meanwhile, the condition of unsmooth drainage caused by folding of the drainage catheter is prevented.

This invention discloses an intraperitoneal infusion device, comprising: a hyperthermic chemotherapy perfusion machine; an infusion assembly including a connecting catheter connected to the hyperthermic chemotherapy perfusion machine, the connecting catheter being detachably connected to a drainage catheter, the drainage catheter being inserted into the abdominal cavity via a guidewire; a catheter positioning assembly including an annular mounting band tightened on the abdominal cavity, the annular mounting band having a central clearance hole on its side near the abdominal cavity, the inner side of the central clearance hole being fitted with an inner fitting for positioning the drainage catheter; and a catheter adjustment assembly for adjusting the offset direction of the drainage catheter, including an adaptive adjustment element mounted on the top surface of the annular mounting band, the top of the adaptive adjustment element extending to the drainage catheter, and the lower end of the adaptive adjustment element having a precision pressure measuring element that fits against the abdomen. This invention can adjust the state of the infusion tube in real time when the patient turns over, thereby ensuring stability during the infusion process.