65 results about "Renal pelvis" patented technology

A delivery system to provide end organ oxygenation and even systematic oxygenation in the face of ischemic result. The deliver system including a retrograde oxygenation and perfusion stent. The stent employing at least two and possibly more channels to allow flow of the perfusate from the device to the renal pelvis then to a back out to a collection apparatus. The stent may include various vital sign monitors, such as a renal pressure monitor, temperature monitor, and even an oxygenation monitor. The stent may include an anchoring device to allow the stent to be anchored into the renal pelvis in a temporary way during the retrograde oxygenation process.

A system and related methods for maintaining the patentcy of the ureter comprising a pusher tube having a pusher tube lumen and an inflate lumen disposed within a wall of the pusher tube and a urinary stent having a proximal and distal portions with an elongated body portion therebetween configured to fit the ureter of the patient and defining a lumen. The system further includes an end-effector that may comprise an inflatable balloon positioned at the proximal portion of the urinary stent for retaining the proximal portion in the urinary bladder. At the distal portion, a retention end-piece is positioned for retaining the distal portion of the stent in the renal pelvis. The end-effector and the retention end-piece of the stent maintain the elongated body portion in situ. The end-effector may also include an inflatable balloon and may contain pharmaceutical or biologic agents for controlled release into the bladder.

Devices and methods that regulate the innervation of the kidney by detection and modification of the aorticorenal ganglion. Devices for percutaneous detection and treatment of the aorticorenal ganglion via a blood vessel to modify renal sympathetic activity.

Devices and methods that regulate the innervation of the kidney by detection and modification of the aorticorenal ganglion. Devices for percutaneous detection and treatment of the aorticorenal ganglion via a blood vessel to modify renal sympathetic activity.

A method for denervation comprises introducing a distal portion of a catheter through an interior of a vessel of a patient to a location at or proximate one of a renal pelvis or a calyx. The catheter includes an elongated catheter body extending longitudinally between a proximal end and a distal end. The catheter body includes the distal portion at the distal end and a catheter lumen from the proximal end to the distal end. Energy is delivered from the distal portion to cause renal denervation, for example, by denervating at least some tissue proximate at least one of the renal pelvis or a renal vessel from a location at or proximate the renal pelvis or the calyx from a location at or proximate the calyx.

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 step is 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 the images 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 during the 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.

Apparatus, systems, and methods provide access to the renal pelvis of a kidney to treat renal nerves embedded in tissue surrounding the renal pelvis. Access to the renal pelvis may be via the urinary tract or via minimally invasive incisions through the abdomen and kidney tissue. Treatment is effected by exchanging energy, typically delivering heat or extracting heat through a wall of the renal pelvis, or by delivering active substances.

The present invention is soft uretero-renoscope with hard sheath has the advantages of both hard uretero-renoscope and soft uretero-renoscope combined. After the soft uretero-renoscope with hard sheath is pushed through the ureteric orifice to the renal pelvis similar to operating one hard uretero-renoscope, the relevant members in the hard sheath are controlled to extend the soft uretero-renoscope from the hard sheath to the different parts of the renal calices, so as to reach the diagnosis and treatment aim. With combined advantages of both hard uretero-renoscope and soft uretero-renoscope, the soft uretero-renoscope with hard sheath has convenient operation and easy expanding.

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, such as clamps, couplers, sutures, adhesives or receiving ends of the renal coil, and the wick portion may further comprise a sheath surrounding an elastic core to prevent kinking and enhance the ability of the wick portion to move with the patient. A novel method of ureteral stent placement is also disclosed.

The invention provides a ureteral stone movement plugging device. The ureteral stone movement plugging device consists of a catheter (1), an expandable compressed airbag (2) and a valve (3), wherein the catheter (1) adopts a hollow long tubular structure with elasticity and is made of elastic silica gel or latex; an opening is formed in the front end of the catheter (1); the opening is positioned inside the expandable compressed airbag (2); the expandable compressed airbag (2) is arranged at the front end of the catheter (1), and in the expanded state, the expandable compressed airbag (2) is ellipsoid-shaped; the valve (3) is positioned at the tail end of the catheter (1), and a syringe connecting port (4) is formed in the valve (3). The front section of the catheter (1) of the ureteral stone movement plugging device can enter a ureter through an operating chamber of a ureteroscope to relatively fix the airbag (2) into a ureteral cavity at the upstream of a stone or at an outlet of a renal pelvis, so that a kidney filling and expanding destructive effect of a water flow injected by the ureteroscope is eliminated and any passage through which the stone may move or escape into the renal pelvis is completely blocked.

The invention relates to a hard lens calculus removing device, which is of a double-sheath structure. A conical guide head is arranged at a far end of an inner sheath, can enable an outer sheath to be smoothly guided into a cavity (including inner and outer bile duct antrums of a liver, a bile duct antrum, a cholecyst antrum and a renal pelvis) and avoids damage of the outer sheath on circumferential tissues and a fistula wall. Elastic and tensile tissues are arranged around fistula, a lumen and an incision, the fistula and the lumen are in half-closing state when being not filled by liquid, and the diameters of the fistula and the lumen are smaller than the diameter of the outer sheath, thus tissues by the side the incision, the fistula wall, the lumen or a cyst wall surround and extrude the outer sheath so as to realize a seal effect and avoid overflow of internal liquid in the lumen and a cyst antrum. After the hard lens calculus removing device is guided into the lumen, the inner sheath is pulled out and the outer sheath is reserved. A Y-shaped joint is arranged on the outer sheath, and calculus surged along with water is conveniently discharged into a collection bag through a side hole of the Y-shaped joint. Due to a protection function of the outer sheath, various hard endoscopes, including oledochoscopes, hard lenses or percutaneous nephroscope set, and ureteroscope are indirectly in contact with soft tissues by the sides of a kidney fistula wall and a cholecyst incision, thus the damage on incision circumferential tissues, the fistula wall and a lumen wall due to repeated insertion and extraction of the endoscopes and devices is basically avoided, and the safety of an operation is improved.

The invention discloses a multi-cavity flushing and draining tube for renal pelvis and bladder, which consists of a draining tube and a flushing tube. The diameter of the draining tube is larger than that of the flushing tube, and the back end is an outer opening, and the front end is closed and is provided with a mushroom-shaped heat, which is provided with a draining tube outlet, which is communicated with the inner cavity of the draining tube. The flushing tube enters into the inner cavity of the draining tube from the back end of the draining tube and extends outwards from the front end, and the back end is a liquid-infusing opening, and the front end is screw-shaped and is provided with a flushing tube outlet. The flushing and draining tube flushes and drains the renal pelvis and the bladder to meet the clinical requirement, which improves the flushing and draining effect greatly, so as to achieve the better curative effect.

The invention discloses a partial-rapid-dissolution anti-reflux ureter support. The partial-rapid-dissolution anti-reflux ureter support comprises a support tube body, and the support tube body is sequentially divided into a renal-pelvis-section tube body, a ureter upper-section tube body, a ureter lower-section tube body, a ureter bladder-wall-section tube body and a bladder section tube body from top to bottom, wherein the renal-pelvis-section tube body, the ureter upper-section tube body, the ureter lower-section tube body, the ureter bladder-wall-section tube body and the bladder section tube body are integrally connected; the ureter lower-section tube body, the ureter bladder-wall-section tube body and the bladder section tube body are dissoluble tube bodies, a bifilar thin silk thread penetrates through the dissoluble tube bodies, the upper end of the bifilar thin silk thread is connected with the ureter upper-section tube body, the lower portion of the bifilar thin silk thread is joined into a single-stranded thin silk thread, and a silica gel ring located in the bladder section tube body is connected to the lower end of the bifilar thin silk thread. The dual-J tube reflux problem is solved, particularly, for patients needing to reserve the ureter support for a long time, the occurrence probability of upper urinary tract infection can be reduced, hydronephrosis exacerbation caused by ureter reflux is avoided, patient pains are reduced, and the life quality is improved.

The invention locally delivers a chemotherapeutic or a radiographic contrast agent to an upper tract urothelial carcinoma (UTUC). The invention includes a balloon catheter with a working channel and aballoon placed into the ureter/renal pelvis via retrograde or antegrade ureteral access. The balloon is inflated to temporarily obstruct the ureter, and a formulation with a chemotherapeutic agent isinfused into the working channel of the catheter and allowed to dwell in the ureter/renal pelvis for a time sufficient to allow the formulation to adhere to and penetrate the urothelial wall. The formulations can be liposomal or non-liposomal formulations. At least a portion of the infused chemotherapeutic-agent formulation adheres to the urothelial wall while it is instilled and dwells in the ureter/ renal pelvis. The methods of the invention can be performed as an adjuvant therapy to other methods of treating UTUC, including ureteroscopic ablation or resection of the tumor.

The invention relates to a noninvasive positioning device for a flexible ureteroscope parapelvic cyst, and discloses a detection device. By using the detection device, a number one detection head is rapidly positioned above a kidney of a patient through identification spotlight, and detection is performed on a waist of the patient through a number two detector to form three-dimensional imaging. Aholding rod is divided into two sections from the middle; one section is a hollow structure, and the other end is a solid structure; one end of a bending rod is arranged in the hollow section of the holding rod; a limiting ring is arranged at one end of the bending rod; a spring is arranged in the middle section of the holding rod; one end of the spring is connected with the holding rod; the otherend of the spring is connected with one end of a bending rod; and the identification spotlight is arranged at the other end of the holding rod, an emitter faces downwards, a connecting block is fixedly arranged at a bottom of the solid section of the holding rod, one end of a number one connecting rod is clamped on the connecting block at the bottom of the holding rod and hinged to the connectingblock through a hinge shaft, and a number one detector is arranged at the other end of the number one connecting rod.

The invention relates to a precise urine bag with functions of automatically discharging urine and monitoring internal pressure of the bladder. The urine bag comprises a urine collecting device (1) provided with a scale, a urine collecting bag (2) provided with a scale, an arc-shaped siphon liquid outlet channel, a drainage tube, a three-way valve, a transparent hose with a scale, a weight block,a two-way valve, a liquid injection port, a taper connector and a flow stop clip. The following problems are solved that manual urine discharge increases the nursing workload, bladder urine retentionis caused when urination is not conducted for a long time, the infection risk of the urinary tract and bladder is increased, reflux of urine and edema of the renal pelvis can be caused if conditions are serious, even the renal parenchyma is pressed, kidney failure is caused, and the life is threatened; in addition, when the internal pressure of the bladder is measured, it is usually necessary to pull out the taper connector; in this way, the operation is troublesome, the sealing performance of a urethral catheterization system cannot be guaranteed, there are no special consumables and measuring tools, the connection is complicated, and the operation is cumbersome.