13 results about "Into bladder" patented technology

The invention discloses a bladder pressure measuring catheter capable of measuring pressure in a cantilever mode in the field of bladder pressure measuring catheters, and the catheter comprises a flexible catheter main body which is internally provided with an infusion tube cavity and a wiring tube cavity. The core is that a deformation bending section is formed at one end, integrated with the micro pressure sensor, of the catheter main body. The deformation bending section is in a temporary straight state to ensure passing ability when being inserted, and is converted into a bent shape under a preset condition after entering the bladder. According to the design, the miniature pressure sensor can be automatically positioned in the central area of the bladder cavity in a cantilever state and is prevented from being in contact with the bladder wall, so that measurement artifacts are eliminated, clinical operation is simplified, and the accuracy and stability of pressure measurement are improved.

The invention discloses a fluid pump and medical equipment, and relates to the technical field of medical equipment, and the fluid pump comprises a connecting piece, a bag body and a valve rod. The connecting piece is used for being connected with a working element, one end of the bag body is connected with the connecting piece, the bag body is used for being switched among a retraction structure, a first inflation structure and a second inflation structure, the valve column is movably embedded in the connecting piece, the two ends of the valve column are connected with the first valve and the second valve respectively, and the other end of the bag body is connected with the first valve. The valve column is configured in the mode that in the first moving stage, the bag body is switched from the retraction structure to the first inflation structure so that external fluid can be guided into the bag body through the first valve, and in the second moving stage, the bag body is switched from the first inflation structure to the second inflation structure so that fluid in the bag body can be injected into the working element through the valve column, the second valve and the connecting piece. According to the fluid pump, the problem that an extension pipeline needs to be added for connection due to the fact that current balloon filling depends on an external power assembly is solved.

The utility model belongs to the technical field of urinary catheters, and discloses an anti-splashing urinary catheter with a supporting guide wire, which comprises a urinary catheter, one end of the urinary catheter is fixedly provided with a connecting valve, through the design of a protection mechanism and a urine collecting bag, urine can be effectively prevented from splashing, after the urinary catheter is inserted into the bladder, urine automatically flows into a transparent silica gel urine storage device, and the urine is prevented from splashing. After it is determined that catheterization succeeds and the guide wire completely retreats, the silica gel automatic closing hole in the tail end of the urine storage device is automatically closed, urine is in a closed state, then the connecting valve is disconnected from the threaded head, the latex isolation plug automatically rebounds, the connecting valve is connected with the threaded connector of the urine collection bag, the adjuster is opened, and the urine can smoothly flow into the urine collection bag. Before a urine collection bag is connected, an injector can be connected with the catheter connecting valve connector, a urine sample is extracted, and the problems that when a guide wire is removed after successful catheterization, splashing occurs due to urine pressure, sterile articles are polluted, and the occupational exposure risk of medical staff is increased are solved.

An intravesical intermittent instillation catheter includes a tube containing a urinary lumen and an instillation lumen. The proximal end has a set of drainage eyelets, formed in a wall of the tube, that are in communication with the urinary lumen as well as a set of instillation eyelets, formed at a tip of the proximal end, in communication with the instillation lumen. A sheath is slidably mounted to surround the tube and having first and second axial positions wherein, in the first position, the drainage eyelets are exposed and, in the second position, the drainage eyelets are covered by the proximal end of the sheath. In operation of the catheter, when the sheath is in the first position, drainage of urine can proceed through a path including the drainage eyelets, the urinary lumen, a drainage connector, and a urinary collection bag and, when the sheath is in the second position, instillation of the medicament can thereafter proceed from a syringe, through an instillation connector, the instillation lumen, and the instillation eyelets and into the bladder.

The novel urinary catheter comprises a drainage tube, a urinary catheterization head is arranged at the end of the drainage tube, a liquid outlet tube is fixedly connected to the end, away from the urinary catheterization head, of the drainage tube, a water injection tube is fixedly connected to one side of the outer wall of the liquid outlet tube, and a water injection hard valve is fixedly connected to the end of the water injection tube. A developing line is arranged in the drainage tube in a penetrating mode, an umbrella-shaped air bag is arranged on the outer wall of the end, close to the catheterization head, of the drainage tube, and a liquid outlet is formed in the outer end of the liquid outlet tube. The drainage tube, the water injection tube and the umbrella-shaped air bag are matched with one another, the umbrella-shaped air bag is designed and can be tightly attached to the bladder wall and the urethral orifice after water injection, urine leakage is effectively blocked, meanwhile, bacteria are prevented from entering the bladder along the catheter in a retrograde mode through a unique sealing structure, and the risk of urinary system infection is greatly reduced.

The utility model discloses a kind of air spring bladder with vulcanization supporting ring composite cord structure, including bladder, the bladder is divided into bladder big head, bladder working area and bladder small head, the bladder big head part is three layer cord structure, the bladder working area and bladder small head part are single layer cord structure, and the overall thickness of bladder working area and bladder small head part is thinner than the thickness of bladder big head part, the inner diameter of bladder working area gradually decreases from bladder big head to bladder small head area, and supporting ring is fixed on the inner wall of bladder big head by vulcanization bonding mode. The air spring bladder of the utility model uses different reinforcing layer structure design, which can not only ensure the expansion outer diameter and burst pressure of the product, but also effectively reduce the product thickness of working area to improve its flexibility, reduce the air spring hysteresis force and improve the product comfort.

According to the technical scheme, the catheter capable of achieving the constant bladder capacity is characterized in that the catheter comprises a catheter body, the catheter body comprises an inner pipeline, an outer pipeline and an insertion body, the head ends and the tail ends of the inner pipeline and the outer pipeline are closed to form an interlayer cavity, a through hole is communicated with the inner pipeline, a small balloon is arranged on the outer pipeline, and the small balloon is communicated with the insertion body. The outer pipeline is provided with a first injection pipe, the first injection pipe is communicated with the small balloon through the interlayer cavity, the guide pipe body is provided with a large balloon, the outer pipeline is provided with a second injection pipe, and the second injection pipe is communicated with the large balloon through a connecting pipe; the small balloon and the large balloon are arranged on the catheter body, after the catheter body is placed into the bladder, a certain amount of liquid needs to be injected into the small balloon before radiotherapy to achieve the effect of fixing the catheter body, and a certain amount of air or normal saline is injected into the large balloon during radiotherapy every time, so that the constant bladder capacity is achieved; therefore, the radiotherapy accuracy is improved, and the radiotherapy treatment effect is improved.

The invention discloses a targeted drug delivery biological hybrid micro-robot as well as a preparation method and application thereof. The micro-robot takes sperms as an active propulsion unit, and is constructed by combining PDA-DOX-FA nanoparticles through a coupling strategy; stable coupling of sperms and nanoparticles is realized through electrostatic adsorption, a biotin-streptavidin system or covalent binding. The micro-robot can enter the bladder through urethra perfusion, arrives at a tumor area depending on the autonomous propelling speed of sperms, realizes stable retention through folic acid targeted recognition and adhesion of neutrophil extracellular trapping nets (NETs), and realizes controllable release of adriamycin and deep penetration of tumors through a photothermal effect triggered by 808 nm near-infrared light. The problems of short retention, non-uniform distribution, insufficient permeation and the like of traditional bladder cancer perfusion treatment medicines are solved, the treatment efficiency and safety are remarkably improved, and the method is suitable for local precise treatment of bladder cancer.

This invention discloses an engineered extracellular vesicle system for constructing an in situ cell factory, its preparation method, and its applications. Specifically, it involves the in situ production of drug molecules with cytotoxic effects within bladder cancer cells under urea-mediated conditions, enabling the application of a urea-mediated targeted in situ killing system for the precision treatment of bladder cancer. Leveraging the unique microenvironment of a high urea concentration of 300 mmol / L within the bladder where bladder cancer lesions are located, an engineered extracellular vesicle system, P@EV, is constructed. VR+U Through the synergistic effect of RGD tumor targeting, VSVG pH-responsive membrane fusion and UTB urea transport function, PGA-1 can be efficiently delivered into bladder cancer cells, promoting intracellular urea accumulation and in situ generation of the cytotoxic product Compound-1.

An intravesical intermittent instillation catheter (100) includes a tube (100) containing a urinary lumen (108) and an instillation lumen (107). The proximal end has a set of drainage eyelets (104), formed in a wall of the tube, that are in communication with the urinary lumen as well as a set of instillation eyelets, formed at a tip of the proximal end, in communication with the instillation lumen. A sheath (122) is slidably mounted to surround the tube and having first and second axial positions wherein, in the first position, the drainage eyelets are exposed and, in the second position, the drainage eyelets are covered by the proximal end of the sheath. In operation of the catheter, when the sheath is in the first position, drainage of urine can proceed through a path including the drainage eyelets, the urinary lumen, a drainage connector, and a urinary collection bag (180) and, when the sheath is in the second position, instillation of the medicament can thereafter proceed from a syringe, through an instillation connector, the instillation lumen, and the instillation eyelets and into the bladder.

This application discloses a method for predicting bladder volume between and within radiotherapy fractions, belonging to the field of precision radiotherapy. The method includes: acquiring a sequence of fan-beam CT images of multiple completed treatment fractions for a patient, including pre-treatment images, pre-exit images, and post-exit images for each fraction; segmenting the images into bladder regions to construct a temporal volume dataset; determining the predicted bladder volume before the next treatment fraction using an inter-fraction prediction model; and determining the predicted bladder volume at a specified time point during the current treatment fraction using an intra-fraction dynamics model. The input to the inter-fraction prediction model includes at least one of volume sequence, water intake information, and extracted features; the input to the intra-fraction dynamics model includes at least one of the current pre-treatment bladder volume and daily water intake information. This application achieves dual-timescale prediction of bladder volume, providing a prospective decision-making basis for adaptive radiotherapy and improving the accuracy and safety of radiotherapy.

The utility model is suitable for medical consumable technical field, provide a kind of fast insertion switching type bladder irrigation tube, including catheter and conversion joint, conversion joint includes cylindrical casing, and casing one end has first pipe orifice, side wall is provided with second pipe orifice and third pipe orifice, catheter is connected with second pipe orifice, and switching core is equipped in casing.When needing to flush, directly flush connector is inserted into first pipe orifice, drives inside switching core to move, so that flush connector is communicated with second pipe orifice, and flushing fluid can enter into bladder, and flush connector is removed after flushing, and switching core is automatically reset, and second pipe orifice and third pipe orifice are automatically communicated, so that flushing waste liquid in bladder can be discharged into urine collection bag from third pipe orifice. The whole process only needs to plug flush connector, and it is simple to operate.

1. The name of the design product: ureteral flexible scope. 2. The use of the design product: through the urinary tract to enter the bladder and renal pelvis, and to diagnose and treat surgical diseases. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.