A balloon catheter inflation device includes at least a first barrel, a first piston, and a second piston. The first barrel has a first end coupled to an outlet chamber with a nozzle, and a second open end. The first piston is slidable within the first barrel and has a first end configured to frictionally engage an inner surface of the first barrel. The first piston is configured to apply a first pressure to fluid within the first barrel and the outlet chamber. The second piston is configured to apply a second pressure to the outlet chamber, where the second pressure is higher than the first pressure.

A balloon catheter system has a catheter with a catheter shaft surrounding a lumen. A balloon is connected to a distal end of the catheter shaft such that a fluid inflation medium can be introduced into or removed from a balloon interior via the lumen. A pressure sensor is configured to measure an instantaneous pressure (p) of the inflation medium in the lumen during inflation and/or deflation of the balloon. A flow sensor is configured to measure an instantaneous volume flow (v) of the inflation medium during the inflation and/or deflation. An evaluation unit is configured to record the instantaneous pressure and the instantaneous volume flow and to determine therefrom a time curve of the flow resistance (R).

Devices, systems, and methods provide measurements of continuous cardiac output (CCO). A pulmonary artery (PA) catheterfor example, a Swan-Ganz cathetercan be utilized to obtain multiple pressure measurements simultaneously from different locations within the circulatory system, such as in a pulmonary artery, right atrium, right ventricle, vena cava, etc. Continuous pressure measurements from multiple points can provide estimates of heart rate and stroke volume allowing computation of cardiac output along with each beat of the heart without the need for thermodilution.

A driving apparatus for delivering a catheter guide wire includes a first driving mechanism, a second driving mechanism and a third driving mechanism. In the initial delivery stage, a catheter between the first driving mechanism and the second driving mechanism is in a bent state; during the first stage of delivery, the first driving mechanism delivers the catheter and a guide wire together, and in the continuous delivery process, the bending degree of the catheter between the first driving mechanism and the second driving mechanism gradually decreases; during the second stage of delivery, a detection mechanism detects whether the catheter between the first driving mechanism and the second driving mechanism is straightened, and if so, the third driving mechanism drives the second driving mechanism to move in the delivery direction of the catheter and the guide wire.

The invention relates to methods and apparatus for unclogging implantable shunts, pored catheters, and other medically implantable lumen with openings for infiltration of bodily fluids and the like.

An apparatus and methods for use are provided, where the apparatus includes: (a) a first catheter having a proximal end and a distal end, and wherein a distal portion of the first catheter includes a first one or more outlets, (b) a first tubular housing having a proximal end and a distal end, wherein the first tubular housing is coupled to the first catheter proximal to the at least one first outlet, (c) one or more pressure sensors coupled to the distal end of the first tubular housing, and (d) a second catheter having a proximal end and a distal end, wherein a distal portion of the second catheter includes a second one or more outlets, and wherein the distal end of the second catheter is configured to be positioned substantially within one of (i) the first catheter or (ii) a second tubular housing coupled to one or more of the first catheter and the first tubular housing, when the second catheter is in a first position.

A medical catheter includes a multi-lumen tube comprising a proximal end, a distal end, a first lumen, and a second lumen, the first lumen being sealed at the distal end. A retractable stylet of the catheter is carried in the first lumen of the multi-lumen tube. The stylet is adapted to stiffen the multi-lumen tube during a placement process and is movable relative to the multi-lumen tube. The first lumen being sealed at the distal end prevents the retractable stylet from protruding from the distal end of the multi-lumen tube. A capillary tube of the catheter is associated with the second lumen of the multi-lumen tube. The capillary tube has a distal tip for releasing an agent at the distal tip to a biological tissue. The distal tip of the capillary tube is an exposed portion of the capillary tube that protrudes beyond the distal end of the multi-lumen tube.

The present disclosure discusses a urinary catheter attachment that is equipped with a sensor and microcontroller that monitors bladder parameters, such as pressure or volume, and determines when the bladder is full and should be voided. In various embodiment, the disclosed system allows individuals who cannot know, feel, or remember when their bladder should be voided to use catheter accessories such as catheter valves. According to various embodiments, the system computes bladder fullness through an algorithm and triggers the alert system when a bladder fullness threshold is passed. In various embodiments, the alert system includes, but is not limited to, notifications via smartphone or smart devices, wearable technology, and patient management systems. The alert system may be substituted with an electronically actuated catheter valve.

A vascular catheter includes a catheter shaft having a distal end, a proximal end, a handle, at least two occlusion elements adapted to isolate a volume of the blood vessel, and an expandable balloon, between the two occlusion elements. The catheter shaft includes a first hole that opens into the expandable balloon. The catheter handle includes a first pumping device associated with a first path and with a first tank containing a first fluid, a second pumping device associated with a second path and with a second tank containing a second fluid, and a synchronization device connectable both to the first and to the second pumping devices.