328 results about "Uretero-ureteral" patented technology

Magnetic compression anastomosis can be carried out by placing cooperating magnets, one in the ileal conduit and one in the ureter, to lock together and form the anastomosis. The magnets may be placed to form a side-to-side anastomosis. At least one of the magnets can include radioactive material. Catheters may be used to place the magnets, and the catheters may have at least one deflatable or retractable tissue spacer.

According to one aspect of the present disclosure, ureteral stents are provided that comprise an elongated stent body, at least one deployable retention structure, and at least one sleeve and/or sheet of drug-releasing material. In various embodiments, at least one sleeve and/or sheet of drug-releasing material is deployed concurrently with the deployment of at least one deployable retention structure. The ureteral stents of the present disclosure are adapted to release the urologically beneficial drug into a subject.

The invention relates to a gradually degradable woven ureter scaffold tube and a preparation method thereof. The woven ureter scaffold tube comprises a tube body. The woven ureter scaffold tube is characterized in that: the tube body is woven by using at least two fiber raw materials with different degradation rates. The preparation method is characterized by comprising the following steps of: making the at least two fiber raw materials with different degradation rates into yarns, weaving the obtained yarns on a first core die by adopting a rhombic structure on a 16 to 32-spindle weaving machine to form a woven tube, stripping the woven tube from the first core die to form the tube body after heat setting, performing secondary heat setting, and coating the tube body by using chitosan to make the tail end of the annular structure. According to the woven ureter scaffold tube, gradient degradation can be realized, the degradation time is controllable, the degraded product is smaller than 1mm<3>, the structure is fixed, and the mechanical property is good.

The invention discloses an electronic flexible ureteroscope with a real-time pressure monitoring function, and belongs to the field of endoscopic medical instruments. The electronic flexible ureteroscope comprises a lens tube and an operation part connected with the lens tube, wherein the lens tube comprises a tip portion arranged at the end of the lens tube, the tip portion is provided with a camera module, a first channel and a second channel communicating with the tip portion are arranged in the lens tube, an illumination beam is inserted in the first channel, and a fiber optic pressure sensor used for monitoring the pressure in the working area where the tip portion is located is mounted in the second channel. The invention further discloses an operation method of the electronic flexible ureteroscope with the real-time pressure monitoring function. According to the method, the pressure in the working area is regulated in real time through automatic control and/or manual control. The electronic flexible ureteroscope with the real-time pressure monitoring function and the operation method thereof have the advantages that pressure change in the working area of the flexible ureteroscope can be monitored accurately in real time, and the pressure in the working area can be adjusted in time so as to improve the safety and success rate of surgery.

The invention is a stent designed for indwelling in a body, where its purpose would be to assist in the drainage of liquid from one part of the body to another. The stent is composed of a material that would typically be coiled to form a cylindrical shape along the length of the stent. Each end of the stent would typically be shaped to form a looped pigtail to prevent migration in the vessel. The stent can be used for minimally invasive procedures or alternatively, it could be placed percutaneously. This stent could be used in various parts of the body, such as the ureter, urethra, bile duct, liver, pancreas, vascular system and neurovascular system.

The invention relates to a membrane type ureteral calculus blocking removal machine which is provided with a hollow operating rod. An opening is formed in a near end of the operating rod, a far end of the operating rod is closed, and a blocking membrane is arranged in a section of the far end of the operating rod; the blocking membrane forms a circular blocking object when seen from an end of the operating rod to the other end of the operating rod in a service state; the distance from a free edge of the blocking membrane to the near end of the operating rod is smaller than the distance from a fixed edge of the blocking membrane to the near end of the operating rod; through holes are further formed in the walls of the operating rod, and water current which flows out of a cavity of the operating rod via the through holes generates acting force on the inner walls of the blocking object. The membrane type ureteral calculus blocking removal machine has the advantages that the ureteral calculus blocking removal machine is small in size and easy to place in the ureters of patients, and calculi can be prevented from being pushed to reversely move towards the kidneys of the patients and injure the walls of the ureters of the patients; the ureters of the patients can be completely blocked, so that the calculi and fragments of the calculi can be effectively prevented from being flushed back into the kidneys of the patients by the poured water current, calculus incarceration can be prevented, deformation and rubbing of the walls of the ureters of the patients can be prevented in calculus dragging and removing procedures, all the calculi can be removed at one step, and the purpose of efficiently removing the calculi can be achieved.

The invention relates to a special-shaped balloon type ureteral calculus blocking extractor. The special-shaped balloon type ureteral calculus blocking extractor comprises a hollow operation rod with the near end open and the far end closed, the far-end section of the operation rod is provided with an embedment groove, an annular balloon is arranged in the embedment groove, the outer periphery of the balloon is provided with a blocking film which surrounds the outer periphery of the balloon by at least one round, and the interior of the balloon is communicated with a cavity of the operation rod. The special-shaped balloon type ureteral calculus blocking extractor is small in size and easy to place in the ureter, the ureter can be completely blocked without pushing ureteral calculi to move reversely towards the kidney or causing damage of ureteral walls, and the calculi and calculus fragments can be effectively prevented from being flushed back to the kidney by perfusion water, the extractor is less prone to calculus incarceration, deformation and friction of ureteral walls during dragging for calculi extraction, all calculi can be extracted for one time, and accordingly high-efficiency calculus extraction is realized.

The invention relates to a pair of operational separating forceps for matching a ureter. The pair of operational separating forceps mainly comprises a shell, a fixed handle, a movable handle, a nail pressing handle, a nail resisting base, a nail cabin, a nail pressing plate, a separating pull rod, a nail pressing pull rod and a telescopic connecting rod mechanism. The operational separating forceps disclosed by the invention can be used for separating tissues under a laparoscope and matching the ureter; and moreover, the surgical reliability is enhanced remarkably, and the surgical time is shortened remarkably.

The invention relates to a disposable electronic flexible ureteroscope operation actuator. The disposable electronic flexible ureteroscope operation actuator comprises a clamping part, a control partand a bottom plate (102) for separating the clamping part from the control part, wherein the clamping part is configured to fixedly mount a disposable electronic flexible ureteroscope, and it is ensured that the disposable electronic flexible ureteroscope does not shake in the examination process. The control part is configured to communicate with an external control device through a cable to obtain an action instruction, and then drives the disposable electronic flexible ureteroscope to complete an inspection action. The disposable electronic flexible ureteroscope operation actuator is adopted to replace handheld operation of a doctor, a surgical robot clamps the disposable electronic flexible ureteroscope operation actuator to control the disposable electronic flexible ureteroscope, thelabor intensity of the doctor is reduced, the examination efficiency of the doctor is improved, and the risk of cross infection is reduced.

The aim of the invention is to provide transplants and a method for the production thereof, modelled on the natural product to such an extent that the above are well incorporated, do not lead to the possibility of rejection reactions, may thus be retained long-term, are considered as bodily material by the host and are replaced by the natural process of cell exchange such that the transplant may grow in the body of the recipient. The stability and the bio-compatibility of the transplant is increased by means of a coating method. According to the invention, said bioartificial composite material for tissue or organ replacement comprises an allogenic, xenogenic or autologous connective tissue matrix and/or a matrix of synthetic material, coated with polymers. Said material is applicable for heart valves, skin, vessels, aortas, tendons, corneas, cartilages, bones, tracheas, nerves, meniscuses, intervertebral discs, ureters, urethras and bladders.

The invention relates to a medicine for treating kidney calculus, and belongs to the technical field of medicinal preparations. The medicine comprises pills and decoction, namely pills and oral liquid, wherein the pills consist of the following components in part by weight: 3 to 5 of amber, 55 to 75 parts of chicken's gizzard-membrane, 5 to 15 parts of akebia stem, 10 to 20 parts of rhubarb and 4to 8 parts of Japanese climbing fern spore; and the decoction consists of the following components in part by weight: 1 to 5 parts of bupleurum, 3 to 8 parts of liquoric root, 3 to 6 parts of red paeony root, 3 to 6 parts of black morning glory, 20 to 40 parts of longhairy antenoron herb, 0.5 to 3 parts of juncus pith, 4 to 8 parts of knotgrass, 12 to 25 parts of Mongolian dandelion her, 5 to 12 parts of pyrrosia leaf, 10 to 15 parts of corn stigma and 5 to 10 parts of bupleurum. The medicine for treating the kidney calculus also can be used for treating ureteral calculus, vesical calculus, urethra calculus, cholecyst calculus, calculus of bile ducts and the like, and the absorption is facilitated by administrating the pills and the oral liquid simultaneously; and due to the adoption of Chinese medicinal herbs, the medicine is small in side effect, good in curative effect and short in treatment course and is praised unanimously, and the relapse rate is almost zero.

The invention provides a ureteral stent tube. The ureteral stent tube comprises a tubular body and a traction line, wherein the body is provided with a first end and a second end which are arranged oppositely; the first end of the body is bent into a circular arc shape, and the second end of the body is bent into a circular arc shape; the bending direction of the second end of the body is oppositeto that of the first end of the body; the traction line is fixed on the tube wall of the body through a degradable fixing line; one end of the traction line is a fixed end, and the other end of the traction line is a free end; and the fixed end of the traction line is fixed with the end part of the first end of the body. Compared with the prior art, the ureteral stent tube provided by the invention has the advantages that: the traction line can be automatically released after the ureteral stent tube is placed into a body for a period of time, and the ureteral stent tube can be pulled out by pulling the traction line in vitro, so that pain of a patient caused by cystoscope operation and injury to the patient during pulling are relieved; and the ureteral stent tube has the advantages of controllable time, convenience for pulling and the like.

The present disclosure relates to biodegradable ureteral stents comprising an anti-cancer drug, and to a composition for use in medicine that may be used to ensure patency of a channel, namely a mammal ureter, for example, an obstructed ureter by a urinary stone, neoplasia or by a surgical procedure. The biodegradable ureteral stents (BUS) disclosed in the present disclosure unexpectedly allow a proper release of anti-cancer drugs, thus extending the duration of the treatment and increasing the efficacy of the treatment.

The invention discloses a bendable ureteral sheath, which comprises a dilating tube, a sheath tube, a sheath tube joint, a fixed joint, a traction steel wire, a locking mechanism, a negative suction joint, and an adjustment device. It consists of a curved section and a soft bendable section that can be bent in two directions. The semi-soft non-bendable section is connected to one end of the sheath tube joint. The expansion tube passes through the sheath tube and the sheath tube joint. One end of the expansion tube is connected to a fixed The joints are connected, and the fixed joint is connected with the sheath tube joint through a locking mechanism for locking the combination of the sheath tube and the expansion tube, and a traction steel wire is passed through the sheath tube. The present invention can not only keep the combined locking of the sheath tube/dilator tube during dilation, but also ensure the locking of the flexible ureteroscope during operation by adopting the rotation locking method, especially when it is used in "flexible ureteroscope holmium laser lithotripsy", it can ensure that the flexible ureteroscope The holmium laser locks the position to prevent damage to the kidney during surgery.

A ureteroscope system includes a handle including a first port and a second port and an elongated shaft extending from the handle to a distal end and including a shaft lumen open at the distal end of the shaft. The shaft is be inserted through a bodily lumen to a target surgical site. The first port is in communication with a handle channel which is in communication with the shaft lumen and the second port is in communication with a working channel extending through the handle and the shaft lumen to the distal end of the shaft. The system also includes a fluid source connected to the first port and pumps fluid through the handle channel and the shaft lumen to irrigate the site and a vacuum source connected to the second port and applies suction through the working channel to dislodge debris from the site.

Provided herein is a bendable ureteral access sheath comprising: (i) a sheath tube comprising a first straight tube section at the tail end, a bendable tube section in the middle, a second straight tube section at the front end of the sheath tube, and a sheath tube hub attached to the tail end of the sheath tube; and (ii) an inner tube having an inner tube knob attached to the tail end of the inner tube; wherein the sheath tube is sleeved on the outside of the inner tube.

The invention discloses a method for predicting ureteral calculus based on an incremental neural network model, comprising the following steps: establishing a daily data database for ureteral calculus; training the neural network model; collecting daily life data and sending it to a server, and saving it to the user's daily data Record table; the data of the day is extracted from the user's daily data record table to form an n-dimensional vector. greater than 0.5; the user judges that he has ureteral calculi, and the user goes to the hospital for examination by himself, and sends the examination results back to the server through the smart home ureteral calculi care equipment, and the server judges whether the examination results are correct; The network model is dynamically corrected. The prediction of the present invention is accurate, and the neural network model is tailored for each user.

The invention discloses a ureteral polyp cutting device for urological departments. Through an inflatable airbag limit head, polyp parts can conveniently pass through; and clamping and fixing can be carried out on polyps, so that the normal cutting of the cutting device can be achieved. The cutting device is characterized in that one end of an inner catheter is connected to one end of a syringe; arubber pad is arranged at the connecting part of the inner catheter and the syringe; an airway is arranged inside the inner catheter; a piston rod is sleeved in the syringe and provided with an anti-slip pattern; an outer sleeve sleeves the inner catheter and is close to the other end of the inner catheter; the airbag limit head is arranged on the other end of the inner catheter; and an air cavity is arranged inside the airbag limit head and communicates with the airway. The airbag limit head is provided with multiple through holes at equal angles, so that precise cutting can be performed onpolyp positions; the polyps can be fixed while being cut, so that accurate cutting can be guaranteed, and slipping can be avoided when the polyps are cut; and the cutting device can accurately clamp the cut polyps to pull out, so that the cut polyps can be avoided from falling in ureter.

The invention discloses an intelligent lithotripsy system which is used in laser lithotripsy operation. The intelligent lithotripsy system consists of a laser lithotripsy machine, a flexible ureteroscope system, a display, a perfusion system and a main machine, wherein the laser fiber of the laser lithotripsy machine is capable of being fed into a human body through a working channel of a flexibleureteroscope; and the main machine receives an intracorporeal focus environment detected by the tip end of the flexible ureteroscope and judges the size of urinary stone and the distance between thetip end of the laser fiber and the urinary stone through an image recognition technique and a distance sensor mounted in the flexible ureteroscope. By adopting the intelligent lithotripsy system, whether a laser generator can be powered on or not can be judged according to a preset safe distance table, in addition, images can be automatically recognized through big data and artificial intelligence, situations of the urinary stone can be judged according to the images together with environment information such as temperatures, and suggestions about optimal laser pulse energy and laser pulse time can be provided for doctors.

The invention relates to the technical field of medical apparatus and instruments, and particularly discloses an electronic flexible ureteroscope, a system and a using method. The electronic flexibleureteroscope comprises a flexible ureteroscope body in a hose shape and a lens bracket arranged at the front end of the flexible ureteroscope body, wherein a lens is arranged in the lens bracket, an energy output channel is formed in the flexible ureteroscope body, an energy output part can be arranged in the energy output channel, a hydraulic pressure detection channel is arranged in the flexibleureteroscope body, the front end of the hydraulic pressure detection channel extends to the front end surface of the lens bracket, and a hydraulic pressure sensor is fixed in the hydraulic pressure detection channel. The system comprises a handle, an electronic endoscopy image processor, an energy instrument, a temperature measuring instrument, a pressure measuring instrument and an endoscope irrigation system. According to the using method, when pressure intensity, detected by the hydraulic pressure sensor, in a cavity is larger than a limiting value, alarm can be sent out, a user is reminded to change energy output of the energy instrument, and the conditions that urosepsis is caused and even the patient's life is endangered due to the fact that fluid flows reversely and substances containing bacteria, toxins and pyrogen are brought into blood under too high hydraulic pressure are avoided.