67results about "Urinary bladder" patented technology

Set forth are vascular valves and servovalves and methods of using the same that may be positioned in the circulatory system without interrupting blood flow to facilitate solid organ transplantation so as to reduce graft organ anoxia and degradation before and after harvesting and storage, thereby minimizing late-term cardiac allograft vasculopathy as a major cause of graft failure. Along the urinary tract, bypassing bladder-generated urge sensation by diverting urine directly from the ureters to a neobladder or collection bag alleviates intractable incontinence, nocturia, urethral syndrome, overactive bladder, dysuria, or frequency. Where the lower tract is missing, a prosthesis can thwart disease and preclude the degenerative metaplastic transition to carcinoma risked when gut is used to construct a conduit for urine, a neobladder, and / or high-maintenance stoma. Druglines to valves and servovalves can directly pipeline-target medication to nidi, anastomoses, or any other trouble spots.

The invention belongs to the field of medical equipment. The artificial pneumatic auxiliary urination system comprises a bladder wrapping piece, and the bladder wrapping piece comprises a curved surface front shell and a curved surface rear shell; the end face of the curved-surface front shell and the end face of the curved-surface rear shell are in butt joint connection. A ureter wrapping shell is arranged on the curved-surface rear shell, a ureter outer hole and a ureter inner hole are formed in the ureter wrapping shell, and a ureter penetrates through the ureter outer hole and the ureter inner hole to enter the curved-surface rear shell; a bladder neck hole; an inner layer is arranged on the inner side of the curved surface front shell, is made of a flexible telescopic material and is connected with the inner side of the curved surface front shell close to the edge, a sealed cavity is formed between the inner layer and the curved surface front shell, the curved surface front shell is provided with a communicating piece, the sealed cavity is filled with a medium, the pressure intensity is increased, and the inner layer is extruded; the bladder wrapping piece is of a module assembly type, a hole and a groove are reserved in a wrapping shell, blood supply of the bladder and smoothness of a ureter and a neck opening of the bladder are guaranteed while the bladder is tightly wrapped, urine can be emptied easily, and bladder hernia is prevented from being formed.

The present disclosure relates to techniques for restricting a urinary bladder and for evacuating urine from a urinary ladder. More specifically, an implantable pumping device is provided, having one or several constriction devices configured to constrict the urinary bladder in order to evacuate urine.

The present disclosure relates to techniques for restricting a urinary bladder and for evacuating urine from a urinary ladder. More specifically, an implantable pumping device is provided, having one or several constriction devices configured to constrict the urinary bladder in order to evacuate urine.

Systems, devices, and methods are provided for the delivery of an implant into the prostatic urethra. Embodiments of delivery systems can include a delivery device for insertion into the patient and a proximal control device for use in controlling release of the implant from the delivery device.

The present invention relates generally to an apparatus for placing a stent at a desired location within the human body. In particular, but not exclusively, the apparatus is configured to place a stent within the ureter or other passage or space within the human body. The invention may be embodied as an apparatus for inserting a stent into a bodily structure of a subject, the apparatus comprising: a stent guide wire, a first moving means configured to move the stent guide wire toward a bodily structure of a subject, a stent pusher disposed about the stent guide wire, and a second moving means configured to move the stent pusher independently of and relative to the stent guide wire.

The present disclosure relates generally to controlled extension medical stents, and more particularly to controlled extension devices positioned in the body to stent the ureter and facilitate drainage from the kidney to the bladder. The stent 302 being formed of a plurality of filaments 302 wound in groups of coils defining a lumen 306 having a non-extended state in which substantial contact between adjacent groups is prensent and a extended state in which the adjacent groups are separated.

Systems, devices, and methods are provided for the delivery of an implant into the prostatic urethra. Embodiments of delivery systems can include a delivery device for insertion into the patient and a proximal control device for use in controlling release of the implant from the delivery device.

An implantable medical device for use as an artificial urinary bladder can include a collection container configured to be placed in a patient's abdominal cavity and a pump configured to be subcutaneously placed outside the abdominal cavity to allow the patient to perceive the need for urination and controls timing of the urination. Flexible tubing can connect the patient's ureters to the collection container, connect the collection container to the pump, and connect the pump to the patient's urethra, with unidirectional valves where needed, to allow for urination through the patient's natural urethra. The implantable medical device can optionally include a cleaning port and tubing connecting the cleaning port to the collection container for introducing a liquid cleaning agent into internal urination circuit of the device for cleaning, disinfection, and prevention of stone formation.

Intravesical devices (100) are provided that are wholly deployable within the bladder of a patient in need of treatment and are well tolerated by the patient. The device (100) may include an elastic body (106) having a retention shape having (i) dimensions that provide intravesical mobility and that prevent voiding of the medical device through the urethra, and (ii) dimensions, buoyancy, or both, that exclude the medical device from entering the orifices of the ureters. The elastic body may exert a maximum acting force less than 1 N when compressed to a shape with a maximum dimension in any dimension of 3 cm. The device may include a drug for controlled release within the bladder, for treatment of the bladder or a regional tissue. Methods of treatment are also provided that include selecting a patient in need of treatment in the bladder where tolerability of the treatment is a primary concern.

Embodiments of the invention provide apparatus, systems and methods for stimulating tissue in the urinary tract to initiate or facilitate urination. One embodiment provides an external urinary sphincter stimulation (EUSS) catheter for stimulating the external urinary sphincter (EUS), where the EUSS catheter includes nerve stimulation electrodes (NSES) for delivering current to nerves within or around the EUS in order to relax the EUS prior to urination. Other embodiments provide a system for stimulating the EUS including the EUSS catheter and a controller operatively coupled to the EUSS catheter, where the controller includes a pulse generator for delivering current to the NSES. Other embodiments provide methods for positioning the EUSS catheter in the patient's body including in the EUS using a urethral approach. Embodiments of the invention are particularly useful for initiating and / or controlling urination for patients who have lost the ability to voluntarily urinate due to neurogenic bladder dysfunction.

The present disclosure relates generally to controlled extension medical stents, and more particularly to controlled extension devices positioned in the body to stent the ureter and facilitate drainage from the kidney to the bladder.

The disclosure relates to apparatus and methods for managing a shape of a junction between a bladder and urethra, for example, to promote urinary continence after a prostatectomy.

The disclosure relates to apparatus and methods for managing a shape of a junction between a bladder and urethra, for example, to promote urinary continence after a prostatectomy.

To create an implant that allows for easy and reliable treatment of the bladder neck. [Solution] This is achieved by an implant having a pressurizing means structure for expanding the bladder neck of a person, particularly a removable implant. This pressurizing means structure applies local pressure to the tissue of the bladder neck. The pressurizing means structure may be connected to a retaining means for operation. This retaining means may be a wire, thread, or rod, and the retaining means is used to insert the implant or pressurizing means structure into the bladder neck via the urethra, and, if necessary, to retrieve the pressurizing means structure from the patient's body after the treatment is completed.

Intravesical devices are provided that are wholly deployable within the bladder of a patient in need of treatment and are well tolerated by the patient. The device may include an elastic body having a retention shape having (i) dimensions that provide intravesical mobility and that prevent voiding of the medical device through the urethra, and (ii) dimensions, buoyancy, or both, that exclude the medical device from entering the orifices of the ureters. The elastic body may exert a maximum acting force less than 1 N when compressed to a shape with a maximum dimension in any dimension of 3 cm. The device may include a drug for controlled release within the bladder, for treatment of the bladder or a regional tissue. Methods of treatment are also provided that include selecting a patient in need of treatment in the bladder where tolerability of the treatment is a primary concern.

The invention creates an implant with which a bladder neck can be treated in a simple and reliable manner. This is achieved by an implant, in particular a removable implant, having a pressure means structure for expanding the bladder neck of a person. This pressure means structure exerts local pressure on the tissue of the bladder neck. The pressure means structure can be connected to a holding means for handling. This holding means, which may be a wire or a thread or a rod, can be used to insert the implant or the pressure means structure through the urethra into the bladder neck and, if necessary, to retrieve the pressure means structure from the patient's body after the end of the treatment.

A percutaneous urinary catheter configured to be deployed in a urinary tract, including: (a) a proximal portion; and (b) a distal portion including a retention portion configured to be deployed in a kidney and / or a renal pelvis, the retention portion including one or more drainage holes leading to one or more lumen(s) within the proximal portion, wherein the retention portion, when deployed, defines a three-dimensional shape sized and positioned to maintain patency of fluid flow between the kidney and / or renal pelvis and a proximal end of the catheter by inhibiting mucosal tissue from appreciably occluding the one or more drainage holes when negative pressure is applied through the catheter.

The present invention discloses a biodegradable artificial bladder and a preparation method thereof. The biodegradable artificial bladder comprises a bladder body, ureters located at both sides of the bladder body and a urethra located at one end of the bladder body. The bladder body, ureters and urethra are all three-layer structures, namely an inner layer, a middle layer and an outer layer. In the biodegradable artificial bladder and the preparation method thereof, the artificial bladder has a three-layer structure, and the inner layer and the outer layer are both made of polyvinyl alcohol hydrogel material or a mixed material of polyvinyl alcohol hydrogel and silk protein, and the middle layer is made of acellular matrix material. Since the degradation rate of polyvinyl alcohol hydrogel is relatively slow, after the artificial bladder is implanted into a human body, the duration of cell tissue regeneration can be longer, and the generated cell tissue can be more complete and reliable, which solves the problem that the animal-derived bladder in the prior art loses its structural integrity due to material aging or rapid biodegradation after long-term implantation into a human body.

An apparatus for treating a urinary retention of a patient by discharging urine from a mammal urinary bladder through a mammal urethra. The apparatus comprises an expandable member adapted to be implanted inside the urinary bladder of the patient, a control device adapted to control the volume of the expandable member for emptying the mammal urinary bladder, and an implantable restriction devices adapted to close each ureter of a patient when discharging urine from the urinary bladder.

The present disclosure relates to techniques for restricting a urinary bladder and for evacuating urine from a urinary ladder. More specifically, an implantable pumping device is provided, having one or several constriction devices configured to constrict the urinary bladder in order to evacuate urine.

An implant with which a bladder neck can be treated in a simple and reliable manner. This is achieved by an implant, in particular a removable implant, having a pressure structure for expanding the bladder neck of a person. This pressure structure exerts local pressure on the tissue of the bladder neck. The pressure structure can be connected to a holding for handling. This holding, which may be a wire or a thread or a rod, can be used to insert the implant or the pressure structure through the urethra into the bladder neck and, if necessary, to retrieve the pressure structure from the patient's body after the end of the treatment.

Systems, devices, and methods are provided for the delivery of an implant into the prostatic urethra. Embodiments of delivery systems can include a delivery device for insertion into the patient and a proximal control device for use in controlling release of the implant from the delivery device.

Drug delivery devices are provided herein and include an elongated, elastic body extending between a first end and a second end, wherein the elastic body comprises a water permeable wall structure having defining an elongated drug reservoir lumen extending between the first and second ends. One or more secondary lumens are structured (e.g., positioned, sized, shaped, and optionally filled) to be effective to retard or prevent in vivo diffusion of (i) water into the drug reservoir lumen and / or (ii) solubilized drug out of the drug reservoir lumen.

The present invention belongs to the field of artificial organ manufacturing technology, and in particular, relates to a special mold and a method for preparing living organs. It overcomes the difficulty of the prior art in realizing the precise construction of various shapes of artificial organs containing multi-branch vertical channels. It includes a bottom mold, at least one inner mold and at least one outer mold; the inner wall of the bottom mold forms an annular step with a radius increasing step by step from bottom to top, and a groove is arranged on the bottom surface of the bottom mold; the number of outer molds corresponds to the number of step layers, and the outer mold is a sleeve-shaped structure with two ends open; the outer mold is placed on the corresponding step to form an open-top structure; the number of inner molds is the same as the number of grooves, and each inner mold corresponds to a groove, and each inner mold includes a transverse mold for simulating secondary branch channels of blood vessels, bile ducts, nerves, and trachea, and a longitudinal mold for simulating primary channel branches; when in use, the longitudinal mold is embedded in the corresponding groove of the bottom mold, and the diameter of the groove is completely consistent with the diameter of the longitudinal mold.

An implantable medical device for use as an artificial urinary bladder can include a collection container configured to be placed in a patient's abdominal cavity and a pump configured to be subcutaneously placed outside the abdominal cavity to allow the patient to perceive the need for urination and controls timing of the urination. Flexible tubing can connect the patient's ureters to the collection container through anti-reflux valves preventing urine from flowing back to kidneys, connect the collection container to the pump through a unidirectional connection valve, and connect the pump to the patient's urethra through a unidirectional urethral valve to allow for urination through the patient's natural urethra.

A surgical medical device includes a rod portion and a support portion extending from the rod portion. The support portion has a first stretch segment, a second stretch segment, and a third stretch segment disposed between the first stretch segment and the second stretch segment. The surgical medical device has a control mechanism. The surgical medical device stretches or contracts the first stretch segment, the third stretch segment and the second stretch segment by the control mechanism.

Disclosed herein is an in-vivo implantable system for bladder management. The system includes an actuator, a urine-level sensor, and a microcontroller connected to the actuator and the urine-level sensor. The actuator includes a two-way smart biomaterial having a changeable / restorable shape due to applying / removing at least one of an electric field, a magnetic field, a light change, a temperature change, ultrasound waves, and combinations thereof. The actuator is utilized to contract / release at least one of the bladder, the urethra, and the ureter(s). The urine-level sensor includes one of a strain sensor, a pressure / force sensor, and an impedance sensor and is used to measure bladder fullness during filling / voiding. The microcontroller is used to perform a method of management of micturition, prevention of bladder leakage, prevention of urine reflux to kidneys of the living body, and combinations thereof utilizing the actuator and the urine-level sensor.

The invention discloses a natural bladder imitating urination system which comprises an artificial bladder body and a controller connected with the artificial bladder body, the artificial bladder body comprises an outer bag body and an elastic inner bag body arranged in the outer bag body, and a urine storage cavity used for storing urine is defined by the inner bag body; the artificial bladder body is provided with a liquid inlet channel and a liquid outlet channel which are communicated with the urine storage cavity, the outer bag body is further connected with a switch valve used for opening or closing the liquid outlet channel, and a closed pressure stabilizing cavity is defined between the outer side wall of the inner bag body and the inner side wall of the outer bag body. An air pressure detection device which is located in the pressure stabilizing cavity and can detect air pressure is arranged on the artificial bladder body, the controller is electrically connected with the detection device so that air pressure parameters can be collected, and the controller is connected with the switch valve so that the switch valve can be controlled to be started and stopped. The natural bladder-imitating urination system is simple and compact in structure, more stable, safer and more reliable.