341 results about "Uretero-ureteral" patented technology

Selective reflection of light by ureters and by tissue around the ureters is used to safely and efficiently image the ureters. In one aspect, a plurality of surgical site scenes is captured. Each of the plurality of surgical site scenes is captured from reflected light having a different light spectrum. The plurality of captured surgical site scenes is analyzed to identify ureter tissue in the captured surgical site scenes. A surgical site scene is displayed on a display device. The displayed surgical site scene has ureter tissue artificially highlighted.

Implantable devices formed of or coated with a material that includes an amorphous poly(D,L-lactide) formed of a starting material such as meso-D,L-lactide are provided. The implantable device can be used for the treatment, mitigation, prevention, or inhibition of a disorder such as atherosclerosis, thrombosis, restenosis, hemorrhage, vascular dissection or perforation, vascular aneurysm, vulnerable plaque, chronic total occlusion, patent foramen ovale, claudication, anastomotic proliferation for vein and artificial grafts, bile duct obstruction, ureter obstruction, tumor obstruction, or combinations thereof.

Provided herein is a poly(ester amide) (PEA) polymer blend and a polymeric coating containing the PEA polymer blend. The PEA polymer blend has a Tg above the Tg of poly(ester amide benzyl ester) (PEA-Bz) or the Tg of poly(ester amide TEMPO). The PEA polymer blend can form a coating on an implantable device, one example of which is a stent. The coating can optionally include a biobeneficial material and / or optionally with a bioactive agent. The implantable device can be used to treat or prevent a disorder such as one of atherosclerosis, thrombosis, restenosis, hemorrhage, vascular dissection or perforation, vascular aneurysm, vulnerable plaque, chronic total occlusion, claudication, anastomotic proliferation for vein and artificial grafts, bile duct obstruction, ureter obstruction, tumor obstruction, and combinations thereof.

Provided herein is a PEA polymer blend and coatings or implantable devices formed therefrom. The PEA polymer blend is formed of a PEA polymer and a material capable of hydrogen bonding with the PEA. The PEA polymer blend can form a coating on an implantable device, one example of which is a stent. The coating can optionally include a biobeneficial material and / or optionally with a bioactive agent. The implantable device can be used to treat or prevent a disorder such as one of atherosclerosis, thrombosis, restenosis, hemorrhage, vascular dissection or perforation, vascular aneurysm, vulnerable plaque, chronic total occlusion, claudication, anastomotic proliferation for vein and artificial grafts, bile duct obstruction, ureter obstruction, tumor obstruction, and combinations thereof.

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.

The present invention discloses a flexible digital ureteroscope that is at least partially disposable. The ureteroscope comprises a single-use catheter and a handle. The catheter comprises a distal end, a bend portion, and a proximal portion. The distal end has a rigid or semi-rigid shell that houses a set of micro lenses, an image sensor microchip, and a plurality of LED light sources. A working channel extends along the entire catheter and is coupled to a working channel port on the handle to receive various medical devices and irrigation lines during an endoscopic procedure. In addition, the catheter includes one or more steering wires to control the distal end to bend towards a desired direction. The rigid or semi-rigid shell of the distal end is made of a mix of polymer composite material with graphene nano-filler for enhancing thermal dissipation. The handle may be a single-use handle or a reusable handle. In case the handle is a reusable handle, it includes a battery module and a wireless communication module for communicating with a host machine wirelessly. In case the handle is a single-use handle, to reduce cost, the handle does not include a battery module and / or a wireless communication module. Rather, the single-use handle includes a host interface for receiving power from the host machine and transmits image data to the host machine.

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 a ureter bracket and a preparing method thereof; the ureter bracket uses biodegradable macromolecules as raw materials and is prepared through a dip forming method. In the method, a mould coated with parting medium on the surface is inserted into solution or meltwater of the biodegradable macromolecules for repeatedly dipping and film forming so as to get the ureter bracket. The degradable ureter bracket is characterized by various sizes, degradation rates and mechanical strengths, which can be compounded with various medicines or developers; furthermore, the ureter bracket can be applied in medical field and satisfy various requirements of clinical application. The method is characterized by simple operating process and mild operating conditions.

The invention discloses an endoscope operating sheath for urological surgery. The endoscope operating sheath comprises a core rod which can be arranged in the endoscope operating sheath to axially slide relative to the endoscope operating sheath. The core rod is internally provided with a guide wire passage, a water injection passage and an image passage, and the guide wire passage, the water injection passage and the image passage extend from the rear end to the front end of the core rod. An endoscope handle is provided with a guide wire connector, a water injection connector and an endoscope connector for guiding a guide wire, water and an endoscope into the guide wire passage, the water injection passage and the image passage respectively. The endoscope operating sheath and the core rod enter a human body along the guide wire, the core rod is drawn out after reaching a lesion part, then a flexible cystoscope is put in the endoscope operating sheath, and the endoscope operating sheath and the flexible cystoscope are operated to observe the lesion part and cooperate with surgical instruments for performing the surgery. The method is simple and easy to operate, and the endoscope operating sheath can be widely applied to renal pelvis and renal caliceal calculi surgery to serve as a visible ureterectasia sheath and is applicable but not limited to cardiovascular intervention, gynecology department, thyroid gland and mammary gland department, neurosurgery department and orthopedics department and other unmentioned related clinical medical fields.

The present invention relates to an improved method for the preparation of hollow cellulose vessels produced by a microorganism, and hollow cellulose vessels prepared by this method. The method is characterized by the culturing of the cellulose-producing microorganisms being performed on the outer surface of a hollow carrier, and providing an oxygen containing gas on the inner side of the hollow carrier, the oxygen containing gas having an oxygen level higher than atmospheric oxygen. The hollow microbial cellulose vessels of the present invention are characterized by improved mechanical properties and can be used in surgical procedures to replace or repair an internal hollow organ such as the urethra, ureter, the trachea, a digestive tract, a lymphatic vessel or a blood vessel

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 discloses a head end cap, which comprises a head end cap main body, wherein a negative-pressure suction passage is kept in the head end cap main body; and a blocking structure, which isused for preventing large-diameter broken calculi from entering into the negative-pressure suction passage, is arranged at the inlet side of the negative-pressure suction passage. The invention also discloses a ureter sheath, which comprises a working portion and an operating portion, wherein the working portion comprises a multi-cavity tube; one end of the multi-cavity tube is connected to the operating portion, and the head end cap is arranged at the other end of the multi-cavity tube; a negative-pressure suction path, which communicates with the negative-pressure suction passage, is arranged in the multi-cavity tube; and a negative-pressure suction interface, which communicates with the negative-pressure suction path, is arranged in the operating portion. According to the ureter sheathand the head end cap thereof provided by the invention, the circumstance that a pipeline gets blocked by the broken calculi can be effectively prevented, and reliability can be effectively improved.

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 discloses a ureteroscope jig. The ureteroscope jig comprises a first mounting seat and a second mounting seat, a first motor used for driving the second installation seat to rotate is arranged on the first installation seat, the output end of the first motor is connected with the second installation seat, and a poking piece used for poking a knob and a second motor used for driving the poking piece to swing are arranged on the second installation seat. According to the ureteroscope jig, a ureteroscope can be clamped through the second mounting seat, therefore, an operation mode of a traditional standing posture handheld ureteroscope is replaced, the operation mode of manual poking is replaced by the mode of poking the knob through a poking piece, and therefore the working intensity of an operator is greatly reduced, ureteroscope vibration caused by excessive fatigue of the operator is avoided, meanwhile, the operation difficulty of the operator can be greatly reduced, andthe operator can conduct more accurate lithotripsy operation. In addition, the invention further discloses a ureteroscope robot.

A catheter system for delivery of a ureteral catheter in a ureter includes a ureteral catheter, a pusher catheter to deliver the ureteral catheter at a desired location, a connection device, to connect, in an assembled state a distal end of the pusher catheter to a proximal end of the ureteral catheter, where, in the assembled state, the catheter system is configured and to deliver, when desired, fluid contrast agent near a proximal end of the ureteral catheter. The catheter system is also configured to deliver, when desired, fluid contrast agent near a distal end of the ureteral catheter.

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.

Provided herein are implantable or insertable biomedical devices comprising a substrate and a collagen inhibitor on or in said substrate, and methods of treatment using the same. In some embodiments, the device is a urethral, ureteral, or nephroureteral catheter or stent. Kits comprising the same are also provided.

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.