66 results about "Renal pelvis" patented technology

A ureteral stent comprising a short renal coil made of a pliable material and a wick portion made of a material having a hydrophilicity or hydrophobicity different from that of the renal coil and extending from a ureteropelvic junction to a bladder so as to assist in the transfer of urine out of a kidney and into the bladder and to improve patient comfort. Due to increased hydrophilicity or hydrophobicity, wick may be significantly smaller in diameter than renal coil, resulting in less reflux of urine into the kidney and further decreasing patient discomfort. The stent may further comprise one or more couplers between the renal coil and wick portion, and the wick portion may comprise a sheath surrounding an elastic core to prevent kinking and enhance the ability of the wick portion to move with the patient. A method of ureteral stent placement is also disclosed.

A ureteral bypass device and procedure suitable for performing internal urinary diversions within patients, including patients such as humans and veterinary animals (cats and dogs). The device includes a nephrostomy catheter having a proximal end, an oppositely-disposed distal end, and means for securing the distal end within the renal pelvis of a kidney of a patient, a cystostomy catheter having a proximal end, an oppositely-disposed distal end, and means for securing the distal end of the cystostomy catheter within the urinary bladder of the patient, and an adaptor fluidically connected to the proximal ends of the nephrostomy and cystostomy catheters so as to fluidically connect the nephrostomy and cystostomy catheters together through the adaptor. If implanted subcutaneously, the adaptor may include an entry site that has a self-sealing septum that can be accessed with a needle while the device remains implanted and secured under the skin to subcutaneous tissue.

The present invention provides a bladder pyeloscope, comprising a pyeloscope sheath, a pyeloscope body, a lithotomy forceps and clamp module, a lithotomy forceps and clamp passage pipe, a chippings passage pipe, an optical fiber passage pipe and an endoscopic imaging module. The end of the pyeloscope sheath is provided with a washing liquid passage opening. One ends of the lithotomy forceps and clamp passage pipe, the chippings passage pipe and the optical fiber passage pipe are respectively communicated with a pull rod inlet at the pyeloscope body, a chippings passage opening and an optical fiber inlet; the other ends are inserted into the pyeloscope sheath and are extended to the end of the pyeloscope sheath. The chippings passage opening is communicated with a chippings passage. The gap inside the pyeloscope sheath is a liquid washing passage which is communicated with the washing liquid passage opening. The lithotomy forceps and clamp module comprises a jaw and a pull rod which isput through the lithotomy forceps and clamp passage to be connected with a handle. The lithotomy forceps and clamp module is arranged outside the end of the lithotomy forceps and clamp passage pipe. One end of the endoscopic imaging module is connected with the pyeloscope body, and the other end is arranged at the end of the optical fiber passage pipe. The present invention has the functions of diagnosing, fixing stone, washing and absorbing chippings, taking the chippings, etc. and has important clinical application value.

The invention relates to a disposable specimen fetcher for cystoscope, ureteroscope, and nephroscope. The specimen fetcher is composed of an inner sleeve, a push-pull rod, a handle, a metal ring and a filtering bag; the inner sleeve The length of the push-pull rod is longer than that of the mirror sheath, and the length of the push-pull rod is longer than that of the inner casing. One end of the push-pull rod is provided with a handle, and the other end is provided with a metal ring. The metal ring is covered with a filter bag, and the filter bag can only filter The metal ring has elasticity, and the push-pull rod, metal ring and filter extraction bag can be put into the inner sleeve, and when the metal ring is pushed out from the inner sleeve, it will expand and filter the material The mouth of the bag is stretched open. Its advantages are as follows: compared with the prior art, the structural design is reasonable, and the surgical specimen can be effectively removed from the bladder, ureter or renal pelvis and calices without tearing off the specimen, which is more convenient and quick, and the specimen is completely removed. There is no residue, which improves the efficiency of the operation and the treatment effect.

The present invention relates to an image processing method which bases on a magnetic resonance three-dimensional renogram. The present invention includes the steps mentioned below. Firstly, a magnetic resonance three-dimensional scanning image of kidneys is read from a magnetic resonance workstation. Secondly, every phase image number and background phase, a cortex and medulla demarcation phase and a holonephros phase are ensured. Thirdly, relative vascular and renal pelvis regions in the image of the holonephros phase are excised. Fourthly, a holonephros contour is identified. The fifth stepis to match the background phase with the cortex and medulla demarcation phase and silhouette. The sixth step is to segment the medulla and the cortex of the kidneys. The seventh step is to match theimages of all phases. The present invention provides a novel kidney dynamic reinforced image segment and match scheme and can precisely correct the motions caused by the breath of the kidneys duringthe MRI image obtaining process and precisely segment the cortex and the medulla. The image processing method of the present invention is proved by the practices to be capable of obtaining the reasonable three-dimensional magnetic resonance renogram. The present invention can be widely applied to the image processing of the magnetic resonance renogram.