62 results about "Bladder volume" patented technology

An apparatus and methods to quantify the volume of urine in a human bladder with a limited number of acoustic beams is disclosed. In a first version the apparatus is composed of a transducers assembly that transmits a plurality of narrow ultrasound beams in different directions towards the bladder and receives the returning ultrasound signals; a receiver detector for processing the returned signals; an analog-to-digital converter; a memory to store the digitized data and a volume display allowing to define the optimal position of the transducer assembly. The apparatus also includes a signal processing software that automatically determines the bladder Depth D and Height H and computes the volume of urine using an empirical formula corrected by specific, empirically measured, filling dependant correction factors. In a second version a single wide angle ultrasound beam transducer transmitting ultrasound signals at fundamental frequency is used to quantify the urine volume. Return signals originating from a depth beyond the usual position of the posterior wall depth of a filled bladder are analyzed for presence of higher harmonic signals which in turn are related to presence or absence of urine. Both methods or a combination thereof can be used us a simple warning device for presence of residual urine after voiding or indicate the presence of a critical bladder urine filling level.

Method of urinary continence training utilizing an objective measurement indicative of the state of fullness of the bladder of the subject to identify the occurrence of an appropriate continence training opportunity. When the objective measurement equals or exceeds a signal threshold value, set to correspond to a bladder volume that is less than a reflexive urination volume, a signal is provided to the subject or to a caregiver. The objective measurement may be performed by a bladder monitor, using any of several modalities of automatic sensing, and preferably using ultrasound. The signal threshold value may be recalculated and increased, so as to continue to correspond to a relatively full bladder, as the subject grows and / or achieves progress toward continence. The method may include other steps directed to help the subject associate the physical sensation of a full bladder with voluntary urination, such as informing the subject that urination is imminent.

The present disclosure relates, according to some embodiments, to subsea fluid storage systems that may automatically and / or continuously compensate for subsea pressure changes. A subsea fluid storage unit with passive pressure compensation may comprise a vessel and a deformable bladder disposed within the vessel. A vessel may comprise a top port, a bottom port, and an internal vessel volume. A deformable bladder may comprise a first end and a second end. A second end may comprise a bladder opening that may be fluidically connected to a top port or a bottom port of a vessel. A deformable bladder may define an internal bladder volume that may be suitable for storage of fluids and / or chemicals.

The invention provides a simulation and analysis device for physiological processes of urine storage and emiction of the bladder, comprising an artificial bladder, an artificial urethra, a pelvic cavity sink, an extrusion device, a pressure device, a perfusion device, a urine recovery device, a pressure measuring device and a flow metering device. The artificial bladder is used for simulating thefeature that the bladder changes volume along with the liquid capacity and realizing the function of urine storage; the artificial urethra used as a channel for discharging liquid in the bladder; thepelvic cavity sink is used as the environment for containing organs of the bladder, and the like; the extrusion device is used for simulating extrusion caused by the peripheral organs of the bladder to the bladder; the pressure device is used for simulating the shrinkage of detrusor of the bladder so as to realize the function of emiction of the bladder; the perfusion device is used for accurately measuring and displaying the liquid amount perfused to the bladder in real time; the urine recovery device is used as liquid reserve of liquid pumping of the perfusion device and for collecting the liquid discharged from the urethra so as to facilitate recycling; the pressure measuring device is used for measuring and displaying inner pressure of the bladder and the inner pressure of a pelvic cavity in real time; and the flow metering device is used for measuring and displaying the flow of the liquid passing through the urethra in real time. The invention can realize the physiological processes of urine storage and emiction of the artificial bladder, analyzes the physiological process by controlling and monitoring urine dynamical parameters of bladder volume.