59 results about "Balloon inflation" patented technology

The present disclosure relates generally to a system for inflating a balloon and more particularly to a system and methods by which parameters for an inflation process are defined based on design and location of a balloon. Particularly, the system is configured to, automatically or in response to a user input, execute an inflation process to facilitate providing a defined minimum amount of a lighter-than-air gas followed by one or more supplemental gases to create a mixture within the balloon. Advantageously, the system may be configured to optimize an amount of each gas injected based on a design and location of the balloon and output an interface including costs, savings, and parameters relating to the location, design, and / or gaseous mixture.

A system for crimping and expanding a medical device may include a delivery system with a handle, a catheter, and an inflatable balloon. A syringe may receive inflation media and may be configured to be received on a balloon inflation system and to be coupled to the delivery system. A crimper may have a collapsible iris assembly configured to receive the medical device therein. The crimper may be configured to mechanically couple to the balloon inflation system. The balloon inflation system may actuate the crimper to crimp the medical device onto the balloon when the medical device is received within the iris assembly. The balloon inflation system may be configured to actuate the syringe to advance the inflation media from the syringe to the balloon to expand the balloon and to expand the medical device that is crimped onto the balloon.

The invention discloses a locking structure balloon catheter system for trigeminal neuralgia and a using method of the locking structure balloon catheter system, and relates to the technical field of balloon catheters. The balloon is allowed to be filled only after the balloon catheter is conveyed to the preset position, so that the situation that the balloon is filled in advance due to misoperation is prevented, and the risk of misoperation is effectively reduced. The system comprises a puncture needle, a balloon catheter and a locking structure, the puncture needle is used for establishing a channel; the balloon catheter comprises a filling catheter, a balloon and a handle Luer connector assembly; the balloon is connected to the far end of the filling catheter, and the two ends of the handle Luer connector assembly are connected with the filling catheter and the injector respectively. The locking structure comprises an elastic sleeve which sleeves the outer wall of the filling guide pipe, and two ends of the elastic sleeve are fixedly connected to the outer wall of the filling guide pipe; when the elastic sleeve is located in the inner cavity of the puncture needle, the elastic sleeve deforms, and a fluid channel filling the catheter is closed; when the elastic sleeve is separated from the puncture needle inner cavity, the elastic sleeve restores to open the fluid channel; the invention further discloses a using method of the balloon catheter system.

The invention provides a sectional type blocking balloon which comprises a balloon catheter, a guide wire catheter, a near-end blocking balloon and a far-end blocking balloon, the near-end blocking balloon and the far-end blocking balloon are sequentially arranged on the balloon catheter, the guide wire catheter is arranged in the balloon catheter in a penetrating mode, and the near-end blocking balloon and the far-end blocking balloon are sequentially arranged on the far-end blocking balloon. A near-end balloon charging and discharging tube and a far-end balloon charging and discharging tube which are used for conveying filling media to the near-end blocking balloon and the far-end blocking balloon respectively are arranged in the balloon catheter, and the portion, between the near-end blocking balloon and the far-end blocking balloon, of the balloon catheter is an exclusive operation area. While the proximal end and the distal end are blocked, a surgical blood vessel repairing operation space is reserved, and the limitation that the proximal end and the distal end of a blood vessel need to be dissociated for blocking in a traditional surgical operation is avoided. The operation efficiency is improved, the workload of medical staff is reduced, and the device is suitable for being widely used and popularized.

The utility model discloses a meteorological balloon inflation device, and particularly relates to the technical field of balloon inflation, the meteorological balloon inflation device comprises a bottom plate, an inflation pump for inflating a meteorological balloon is arranged in the bottom plate, and a limiting mechanism for limiting the meteorological balloon is arranged at the top of the bottom plate. The limiting mechanism comprises two limiting plates arranged on the two sides of the top of the bottom plate respectively, first supporting frames are arranged on the two sides of the interior of the bottom plate, a two-way threaded rod is in threaded connection with the exterior of one first supporting frame, fixing plates are in threaded connection with the two ends of the two-way threaded rod, and the tops of the fixing plates are fixedly connected with the bottoms of the limiting plates. According to the utility model, the meteorological balloon can be limited through the limiting mechanism, the operation is simple, the time is saved, the inflator pump in the bottom plate can be detected and maintained through the dismounting mechanism, and the service life of the device is prolonged.

The utility model relates to an automatic balloon inflation vending machine applied to the field of recreation facilities, which comprises a box body, a partition plate and a balloon taking assembly are fixedly connected to the inner wall of the box body, a placing plate is fixedly connected to the front end of the partition plate, an automatic stick discharging machine is fixedly connected to the upper end of the placing plate, and two sets of balloon storage bins are fixedly connected to the rear end of the box body. The two ball storage bins are located on the upper side and the lower side of the containing groove respectively. The ball taking assembly is located on the rear side of the ball storage bins. The inner top wall of the box body is fixedly connected with a distribution board. A front door is arranged in front of the equipment. Replenishment maintenance can be carried out through opening and closing of the front door, daily maintenance efficiency is effectively improved, meanwhile, the baffle is arranged at the goods taking opening, door opening and closing actions can be automatically carried out when equipment runs, and therefore when the equipment is in a standby state, the situation that an unused person enters the goods taking opening by mistake can be effectively avoided, and safety performance of the equipment is effectively improved.

A prosthetic heart valve delivery system may include a handle, an outer catheter extending distally from the handle, and a balloon mounted to a distal portion of the outer catheter. A prosthetic heart valve may be configured to be received on a balloon, and a balloon inflation system may be configured to inflate and deflate the balloon. The balloon may include a proximal balloon portion and a distal balloon portion positioned distal to the proximal balloon portion. The interior volume of the proximal balloon portion may be fluidly isolated from the interior volume of the distal balloon portion such that the proximal balloon portion and the distal balloon portion may be inflated independently of each other.

This invention provides a balloon microcatheter, relating to the field of medical devices. The balloon microcatheter includes an outer tube, a balloon, a connecting tube, and a reducing tube. The balloon is disposed at the distal end of the outer tube, and the connecting tube passes through the outer tube. The wall of the connecting tube has a through hole, and a first channel is defined between the outer wall of the connecting tube and the inner wall of the outer tube. The first channel communicates with the through hole and connects to the balloon. The connecting tube is sleeved on the outside of the reducing tube. When pressure is applied into the reducing tube, the inner diameter of the reducing tube increases, effectively increasing the space of the infusion cavity and improving the infusion efficiency of the balloon microcatheter. When pressure is applied into the first channel, the outer diameter of the reducing tube decreases. At this time, the space of the second channel formed between the outer wall of the reducing tube and the inner wall of the connecting tube increases. The second channel and the first channel together form the filling cavity, effectively increasing the space of the filling cavity and thus improving the balloon inflation efficiency.

The invention discloses a film-covered balloon double-cavity stomach tube and a preparation method thereof. The stomach tube comprises a double-cavity stomach tube body, a compliance balloon and a drug-loaded fiber film. The double-cavity stomach tube is provided with a main cavity for gastrointestinal drainage and a side cavity for balloon inflation and deflation; the compliance balloon is fixed to the esophageal section and expands and contracts through inflation and deflation of a side cavity. The outer surface of the balloon is coated with the drug-loaded fiber covering film, the drug-loaded fiber covering film is composed of coaxial drug-loaded nanofibers, a sheath layer of the drug-loaded fiber covering film is made of a blend of polylactic acid caprolactone and collagen, and a core layer of the drug-loaded fiber covering film is made of polylactic acid caprolactone dispersed with anti-inflammatory drugs and local anesthetic drugs. According to the preparation method, a drug-loaded fiber covering film is constructed on the surface of the balloon through a coaxial electrostatic spinning technology, drugs (such as dexamethasone and lidocaine) can be encapsulated in a nanofiber core layer, a sheath polymer material is used as a diffusion barrier, burst release of the drugs is effectively prevented, continuous and controllable release of the drugs at the esophageal diseased region is achieved, and the drug delivery effect is improved. The medicine action time is obviously prolonged; the curative effect is improved.

In one example, the balloon inflation device includes a handle having a proximal handle end and a distal handle end. The balloon inflation device also includes a shaft extending distally from the distal handle end and an inflatable balloon positioned around at least a portion of the distal portion of the shaft. The shaft includes a hypotube having an inner surface and an outer surface. The inner surface defines the lumen of the hypotube. The shaft also includes a liner tube positioned within the lumen of the hypotube and a position sensor coupled to the distal portion of the hypotube. The position sensor is located between the inner surface of the hypotube and the liner tube.

The utility model discloses a breathing machine gas circuit sealing detection device, and relates to the technical field of breathing machine gas circuit detection, the breathing machine gas circuit sealing detection device comprises a supporting seat, the left side of the supporting seat is provided with a movable seat, and the upper side of the movable seat is provided with a test assembly; the testing assembly comprises a mounting frame mounted at the top end of the supporting seat, an air inlet pipe is arranged on the left side of the top end of the mounting frame, a plug is mounted on the outer side of the air inlet pipe, a fixed frame is welded to the top end of the movable seat, and a communicating valve head is arranged on the right side of the top end of the fixed frame; in the detection process, the interior of the pressure stabilizing balloon is inflated and expanded, so that after the air pump stops supplying air, pressure is continuously provided for the interior of the pipeline, meanwhile, whether expansion of the pressure stabilizing balloon becomes small or not can be observed, and therefore whether leakage exists in the pipeline of the breathing machine or not is judged; if the pressure stabilizing balloon expands stably and the reading of the pressure testing meter is kept within a certain range, the sealing performance of the breathing machine pipeline is good.

The invention relates to a bionic structure for minimally invasive surgery and a preparation method, the bionic structure for minimally invasive surgery comprises a variable-diameter sheath core and a flexible sheath tube, the variable-diameter sheath core comprises a sheath core main body, a guide wire channel is arranged in the sheath core main body, one end of the sheath core main body is sleeved with a linear balloon, and the linear balloon is arranged in the sheath core main body. The balloon is communicated with a balloon filling channel; the flexible sheath tube is arranged outside the linear balloon in a sleeving mode, the hardness of the imbedding end of the flexible sheath tube is smaller than that of the operating end of the flexible sheath tube, and when the linear balloon is full, the linear balloon abuts against the inner wall of the flexible sheath tube, so that the sheath core body, the linear balloon and the flexible sheath tube are fixed into a whole.

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

The utility model discloses an inflation compression device, which belongs to the technical field of nursing devices, and comprises a compression mechanism and a balloon inflation part matched with the compression mechanism for use, the compression mechanism comprises a support frame, an air bag compression part, a drainage tube fixing part and a bandage assembly, the air bag compression part is connected to the rear side of the supporting frame, the drainage tube fixing part is connected to the inner side of the center of the supporting frame, the bandage assembly is connected with the two side edges of the supporting frame, and the air bag compression part comprises a plurality of annular air bags and an inflation inlet. According to the mode, the annular air bag on the outermost layer is inflated, so that the expanded annular air bag slightly compresses the chest skin of a patient, and diffusion and transfer of subcutaneous emphysema can be prevented; when a medical worker finds subcutaneous emphysema, the annular air bags at different positions are sequentially inflated from outside to inside, and the subcutaneous emphysema is pushed to move towards an incision through compression until the subcutaneous emphysema moves to the incision, so that the auxiliary treatment of the subcutaneous emphysema is effectively realized.

The application provides a balloon inflation control method, a medical balloon system and a storage medium. The method is executed by a microprocessor, and the method comprises the following steps: the microprocessor controls a power system to inject inflation medium into a balloon at an initial inflation speed; whether the balloon is inflated to completion is determined according to a proximal end blood pressure value detected by a first sensor and / or a balloon internal pressure value detected by a second sensor, or an actual inflation volume of the balloon; when the inflation is completed and a first preset time elapses or the proximal end blood pressure value reaches a first preset value, the microprocessor controls the power system to release the balloon, so that the balloon internal pressure value detected by the second sensor reaches a second preset value; after the balloon internal pressure value remains the second preset value for a second preset time, the microprocessor acquires the proximal end blood pressure value detected by the first sensor after the second preset time; and the microprocessor controls the power system to adjust the inflation amount of the balloon according to the relationship between the proximal end blood pressure value and a standard value.

This invention relates to a urinary catheter for post-prostatectomy, comprising an outer sheath, a catheter disposed inside the outer sheath, and an expansion component disposed on the surface of the outer sheath. Compared with the prior art, this invention, through the protruding structure on the surface of the balloon, allows the doctor to achieve hemostasis on the wound after prostatectomy via the balloon. The protruding structure can closely fit the uneven interior of the wound after surgery, resulting in better hemostasis compared to the smooth balloon surface in the prior art. At the same time, since the interior of the protrusion is connected to the interior of the balloon, the expansion size of the protrusion during the balloon inflation phase can be affected by the unevenness of the wound surface, avoiding excessive pressure on the post-operative wound area. In addition, the design of multiple sub-protrusions can increase the contact area after the balloon is filled with water or air, resulting in better compression hemostasis.

The present application relates to meteorological balloon inflation control field, disclose a kind of flat drift balloon inflation quantity simulation method, system and storage medium, comprising: obtaining the measured parameter of flat drift balloon;Obtain the release parameter of flat drift balloon, the release parameter includes target flat drift height;Obtain the virtual inflation quantity of flat drift balloon;Establish the mathematical coupling model of flat drift balloon, import the measured parameter, release parameter, virtual inflation quantity, calculate the simulation state of every step length after flat drift balloon is released, the simulation state includes simulation height;The simulation height of outer balloon is judged, if the simulation height of outer balloon is less than the target flat drift height, then continue to calculate the simulation state of next step length of flat drift balloon, if the simulation height of outer balloon is greater than or equal to target flat drift height, then calculate the simulation inflation quantity of flat drift balloon.The present application solves the problem of existing inflation method waste time and instrument, low degree of automation.

1. The name of the design product: balloon inflator. 2. The use of the design product: for balloon inflation. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The utility model relates to a retroperitoneal cavity dilatation balloon which comprises a balloon body which is not transmitted by X rays and has mark colors, an inflation device and a connecting pipe communicated with the balloon body and the inflation device, and the inflation device is used for controlling inflation gas flow and further controlling inflation capacity. The balloon and the connecting pipe are detachably connected in a sealed mode through a first connecting device, and the inflating device and the connecting pipe are detachably connected in a sealed mode through a second connecting device; a pressure relief device is fixed to the inflation device and used for relieving pressure when inflation pressure is larger than preset inflation pressure so as to prevent the balloon from being broken. And the inflating device and the pressure relief device are electrically connected with the controller. According to the retroperitoneal cavity expansion balloon, the inflation capacity and pressure of the balloon can be controlled, the balloon is prevented from being broken, and parts can be conveniently detached and replaced and fragments of the balloon can be conveniently found.

The invention provides a meteorological balloon inflating and shaping device and an inflating and shaping method. The meteorological balloon inflating and shaping device comprises a shaping box filled with a liquid medium. A plurality of layers of floating balls are laid in the shaping box body; an assembly notch is formed in one end of the shaping box body, and an inflation assembly is slidably assembled in the assembly notch; the inflation assembly comprises positioning sliding blocks, positioning shafts connected with the positioning sliding blocks and an inflation head connected between the two positioning shafts in a damping mode. And an inflation adjusting valve is assembled on the inflation head. According to the meteorological balloon, the bottom contact points of the meteorological balloon are supported through the multiple layers of floating balls, so that the meteorological balloon has a flexible expansion space in the inflation process, comprehensive expansion is achieved, the meteorological balloon is not wetted by a liquid medium, the inflation angle of the inflation head changes along with expansion, manual intervention is reduced, and the overall thickness uniformity rate meets the standard requirement. In addition, the invention further provides an air inflation shaping method, by means of the method, the workload of workers is greatly reduced, the manufacturing cost is reduced, and the qualified rate of finished products is increased.

The present application relates to the field of training device, and discloses a lung function rehabilitation training device, which comprises a shell with a training cavity inside, an observation window is arranged on one side of the shell, a balloon is arranged in the training cavity, a training pipe with one end communicated with the balloon is arranged on the shell, and a blowing nozzle is arranged on the other end of the training pipe; an exercise grading mechanism is arranged in the training cavity, the exercise grading mechanism comprises a hanging plate and a support part arranged on the inner wall of the training cavity, the support part makes the training cavity have multiple grading cavities, and the hanging plate is supported in the grading cavities during the inflation process of the balloon. Through the cooperation between the balloon and the training pipe, the lung expiration training is realized; the support part is arranged to form multiple grading cavities, so that the expiration training grading of different standards is realized, and the hanging plate is matched to facilitate the intuitive understanding of the training standards and training conditions of the corresponding stages, so that the patient can automatically match the appropriate training standards according to the appropriate conditions during the lung training, so as to automatically synchronize the training results and training standards to improve the best training effect.

The invention relates to the field of medical instruments, in particular to a multifunctional outer sleeve for colonoscopy. Comprising an inner sleeve and a balloon, the balloon is installed on the upper portion of the outer side of the inner sleeve, and the balloon comprises an expansion part; the inner sleeve comprises two cavities, namely a main cavity and an inflation cavity; a one-way valve is arranged at the bottom of the main cavity and used for being inserted into the colonoscope, and one-way sealing is achieved when the colonoscope is pulled out. The inflating cavity is communicated with the balloon through the communicating port and is used for inflating and deflating the balloon; a balloon inflation tube is further arranged and connected with the inflation cavity. The three pain points of pain, gas leakage and out-of-control intestinal pressure in traditional colonoscopy are effectively solved, and the comfort level of a patient, the examination safety and the operation efficiency are remarkably improved.

The invention relates to an inflation early warning device for a lift-off balloon, and belongs to the technical field of hydrogen filling. In the lift-off balloon inflation early warning device, a pressure sensor, an alarm, a smoke temperature detector and a concentration detection unit are all connected with a controller; the pressure sensor is used for monitoring and displaying pressure information of the gas conveying pipeline in real time; the alarm is used for sending out an alarm signal; the smoke temperature detector is connected with the controller, the smoke temperature detector is used for monitoring the smoke concentration and temperature change of a gas filling area, the concentration detection unit is used for detecting the concentration of filled gas, and the stop valve is used for cutting off gas conveying in the gas conveying pipeline. Therefore, according to smoke concentration and temperature information acquired by the smoke temperature detector or hydrogen concentration information acquired by the concentration detection unit, the air inflation early-warning device for the lift-off balloon can send out alarm information prompt when a fire-fighting dangerous case occurs, so that the stop valve is closed in time according to the alarm information, and the safety in the air inflation process is improved; and the safety accident risk during hydrogen filling is reduced.

The utility model provides a dual-mode balloon inflation nozzle and a dual-mode balloon. The dual-mode balloon inflation nozzle comprises an air valve assembly, a supporting seat and a silencing cover. The valve assembly comprises an inner ball inflation door and an outer ball inflation door which are arranged side by side. A base and a cover body of the supporting seat are used for being fixedly connected with an inner ball and an outer ball respectively, and an inner ball inflation door and an outer ball inflation door are fixed in a space defined by the base and the cover body and used for inflating the inner ball and the outer ball respectively. The silencing cover is fixedly connected with a base of the supporting seat and wraps a cover body of the supporting seat, and a gap is formed between the silencing cover and the cover body. According to the technical scheme, the supporting seat is matched with the inflating device, and the inner ball inflating door and the outer ball inflating door which are used for inflating the inner ball and the outer ball independently are arranged in the supporting seat, so that the inner ball and the outer ball of the dual-mode balloon can be inflated independently or simultaneously, the operation is convenient, the inflating efficiency is improved, and the inflating cost is reduced. The inflation amount can be better controlled, and the risk of ball skin damage caused by repeated manual inflation operation is reduced.

The utility model belongs to the technical field of tracheal intubation, and particularly relates to a tracheal intubation with a flushing function, which comprises a main body tube, a balloon is arranged on the surface of the main body tube, a balloon inflation tube is connected to the surface of the main body tube, an air bag is inserted into the other end of the balloon inflation tube, a one-way valve is inserted into the opening end of the air bag, and the other end of the air bag is connected with the flushing device. A main body pipe joint is inserted into one end of the main body pipe, a suction pipe is connected to the surface of the main body pipe, and a flushing joint is inserted into the other end of the suction pipe. The suction pipe can be conveniently connected with external flushing equipment through the flushing connector, compared with a separated pipeline, operation is easier, the flushing equipment can conveniently inject flushing liquid into the lower part of the glottis through the flushing connector, the suction pipe, the second channel and the suction hole, and the diameter of the suction pipe and the second channel is larger than that of the balloon inflation pipe and that of the first channel and smaller than that of the main pipe. The diameter of the suction hole is equal to that of the second channel, so that more flushing fluid can be injected conveniently, more secretions can be pumped out at a time through the suction pipe, and efficiency is improved.

The invention discloses a modeling method, system and equipment for an inferior vena cava blood flow blocking system. The modeling method of the inferior vena cava blood flow blocking system comprises the steps that a geometric model of the sacculus blocking inferior vena cava system is established, the geometric model comprises a fluid domain and a solid domain, the fluid domain is modeled to be a rigid cylindrical tube, the solid domain comprises a sacculus and a catheter, the sacculus is modeled to be a hollow ellipsoid, and the catheter penetrates through the center of the sacculus; performing grid division on the fluid domain and the solid domain; determining a geometric model and materials and parameters of blood and a balloon, and setting boundary conditions; and according to the boundary conditions, the geometric model and the materials and parameters of the blood and the balloon, performing simulation solution on the geometric model so as to simulate the change process that the balloon blocks the inferior vena cava blood flow in the balloon expansion adjusting process. According to the embodiment of the invention, the specific change process of the blood flow and the pressure of the inferior vena cava in the liquid filling and discharging process of the balloon can be simulated according to the given change of the pressure applied to the inner wall of the balloon.

This invention discloses a four-lumen, double-balloon universal urethral medication catheter, comprising a tube body with four independent lumens: a urination cavity for draining urine, distally connected to a drainage port; a urethral medication cavity for instilling medication or flushing fluid, distally connected to a urethral medication port; a first balloon inflation cavity for controlling the inflation of the first balloon; and a second balloon inflation cavity for controlling the inflation of the second balloon. The first balloon is located distally in the catheter for fixation in the bladder trigone; the second balloon is located proximally in the catheter for sealing the urethra. The urethral medication port is located on the side wall of the tube body between the first and second balloons. The first balloon inflation cavity has a one-way valve at its external end, allowing independent control of the inflation pressure of the first balloon. This invention, through its four-lumen, double-balloon design, solves problems such as urethral medication reflux, limited functionality, and the risk of cross-contamination, making it particularly suitable for local treatment of urethral fibrosis.

The utility model discloses a meteorological automatic inflation fine device of sounding, including hydrogen storage tank, hydrogen pipeline, weighing sensor and control box, hydrogen pipeline is divided into the former section and the latter section, and hydrogen pipeline former section is connected with hydrogen storage tank, hydrogen pipeline latter section is divided into the outer sphere inflation pipeline and the inner sphere inflation pipeline, and two are communicated with the outer sphere of double -layer sounding balloon and the inner sphere through the outer sphere inflation hose, the inner sphere inflation hose respectively, and are equipped with the outer sphere pipeline solenoid valve, the inner sphere pipeline solenoid valve respectively, weighing sensor is fixed on the inflation platform and is connected with double -layer sounding balloon through sounding special rope, and weighing sensor is used for measuring net lifting force, and net lifting force real -time signal is transmitted to control box, control box is used for receiving, display net lifting force to real -time control outer sphere pipeline solenoid valve and the opening and close of inner sphere pipeline solenoid valve according to net lifting force size. The utility model can realize the accurate control to the balloon net lifting force in the process of the flat drift double -layer sounding balloon inflation.

This invention belongs to the field of urinary catheter technology in medical devices, and discloses a disposable urinary catheter that prevents urine residue and leakage. The catheter includes a catheter body, one end of which is provided with a cap. A double-fish-shaped balloon and an elastic edge are disposed between the catheter body and the cap. The other end of the catheter body is provided with a drainage head and a balloon injection head. The double-fish-shaped balloon has a symmetrical double-balloon structure, and each balloon is connected to a corresponding injection end. The injection end is disposed inside the balloon injection head and is connected to the corresponding balloon through an internal tubing within the catheter body. This invention, through the double-balloon structure with its independently connected injection ends and internal tubing, allows the elastic edge to expand outward during balloon inflation, forming an inverted cone-shaped structure with a top diameter larger than the bottom diameter. This ensures a tight seal between the elastic edge and the urethral orifice, solving the leakage problem caused by poor fit in traditional urinary catheters.

A stent graft apparatus for endovascular treatment of aortic diseases includes a balloon-expandable section and a self-expanding section connected by radial sutures to form a unitary device. The balloon-expandable section comprises a metallic framework configured for deployment via balloon inflation and includes a plurality of radially equidistant radiopaque markers for fluoroscopic visualization. The self-expanding section comprises a shape-memory material configured to exert continuous radial force upon release. The connected sections are sequentially deployed through a catheter-based delivery system, allowing the balloon-expandable section to anchor the graft precisely at the treatment site before the self-expanding section is released to conform to the vessel anatomy. This configuration facilitates both accurate positioning and anatomical adaptability, reducing the risk of migration and improving fixation in complex aortic regions. The apparatus may be used to treat aneurysms, dissections, or injuries in various segments of the aorta.