A method for performing a medical procedure requiring effective, reliable and foolproof delivery of controlled amounts of a medical grade gas to a patient includes providing a compressed gas cylinder having a weight with medical grade gas sealed therein of at least twelve grams and not greater than fifty grams. The method also includes connecting the compressed gas cylinder to an integrated compressed gas unit including a regulator valve assembly positioned between an outlet port and an inlet port, wherein the regulator valve assembly includes a press button actuator and regulator adjustment dial. A flow control system is secured to the compressed gas unit and the medical grade gas is delivered in precisely controlled amounts by actuating the compressed gas unit and operating the flow control system to deliver the medical grade gas to vasculature of the patient.

A catheter (1) has a distal side and a proximal side and includes a tip part (10) and a main body part (20) disposed proximal to the tip part (10), the main body part (20) includes a first layer (21) and a second layer (22), the first layer (21) contains 60% by mass or more of an ethylene-tetrafluoroethylene copolymer, the second layer (22) is disposed inside of the first layer (21) in a radial direction of the catheter (1) and contains 60% by mass or more of a polyamide resin, and a cantilever bending load of the tip part (10) is smaller than a cantilever bending load of the main body part (20).

A fluid injector system includes a powered fluid injector, a connection port configured to receive a single-use disposable set having tubing connected to a fluid inlet port at a first end and connected to a waste outlet port at a second end, and a detector associated with the connection port and configured to generate a signal in response to a sonic, infrasonic, or ultrasonic wave emitted from the single-use disposable set during a priming operation of the single-use disposable set. In some examples, the detector is configured to generate a signal if the frequency of the wave emitted from the single-use disposable set is outside a predetermined range of frequencies corresponding to a predetermined range of frequencies of air expelled from the tubing. A method for detecting the multiple uses of a single-use disposable set connected to a fluid injector system is also provided.

A medical assistance device capable of improving handling or an operation of a medical device. The medical assistance device is connected to the medical device which is inserted into a biological lumen and is used in a procedure in the biological lumen. The medical assistance device includes a support, a winding unit which is rotatably provided about a support shaft with respect to the support and winds the medical device, and a connection section which is provided in the winding unit and is connected to an end portion of the medical device.

Systems and methods are provided for injecting one or more agents into tissue within a patient's body. In one embodiment, an injection device includes a substantially axially incompressible elongate member including a lumen extending between proximal and distal ends thereof. A distal stop is provided on the distal end and a needle tip extends distally beyond the distal stop, the needle tip having a cross-section smaller than the distal end. The needle tip includes a passage communicating between the lumen and an outlet in the distal tip that has having a cross-section smaller than the lumen. In an exemplary embodiment, the elongate member includes a coil extending between the proximal and distal ends, and a sleeve disposed within an interior region of the coil extending between the proximal and distal ends. The sleeve defines the lumen and may be free-floating within at least a portion of the coil.

An infusion pump including a fluid chamber having an outlet valve and a piezo-stack actuator including a stack of piezo-electric layers. The infusion pump also includes a linear actuator to measure displacement of the piezo-stack actuator during operation. An electronic processor is programmed to operate the outlet valve and the piezo-stack actuator to pump fluid through the fluid chamber at a programmed flow rate.

There is provided a control device for providing a fluidic signal to a medical infusion apparatus, the device comprising a housing and a pressure control sheet, wherein the pressure control sheet is formed from a deformable and resilient material, and the pressure control sheet is secured to and forms a seal with the housing such that the housing and the pressure control sheet together define a first chamber and an independent second chamber, wherein the pressure control sheet is arranged so that the fluid pressure within each chamber can be changed upon input from a user. The control device further comprises a first fluid conduit member in fluid-flow communication with the first chamber and a second fluid conduit member in fluid-flow communication with the second chamber, wherein, in use, inputs from a user change the fluid pressure within the chambers which causes movement of fluid through the fluid conduit members to provide fluidic signals.

A dual-lumen injection catheter is equipped with a distal balloon featuring one or more fenestration or openings on the distal portion thereof. This allows injection of contrast agent in parallel to the injection of embolic agent and better control over the delivery of the therapeutic agent for cancer treatments, bleeding or other purposes.

A dual double balloon catheter includes a catheter having a proximal end portion, a central portion and a distal end portion, and a secondary treatment balloon for a catheter. The catheter includes a plurality of lumens within the catheter extending from the proximal end portion, a plurality of inflatable balloons positioned in the central portion and a secondary treatment balloon communicatively associated with the distal end portion of the catheter, and the balloons and the secondary treatment balloon being communicatively connected with a corresponding one of the plurality of lumens to selectively inflate/deflate the corresponding inflatable balloon or to receive a radioactive dose or a therapeutic agent for a treatment.

A system for aspirating thrombus and delivering an agent includes an aspiration catheter having a supply lumen having a proximal end, a distal end, and a wall, and an aspiration lumen having a proximal end, an open distal end, and an interior wall surface adjacent the open distal end, and at least one orifice at or adjacent the distal end of the supply lumen, in fluid communication with the aspiration lumen and located proximally of the open distal end of the aspiration lumen, wherein the at least one orifice is configured to create a spray pattern that is caused to impinge on the interior wall surface of the aspiration lumen such that the spray pattern upon impinging on the interior wall surface is caused to transform into at least a substantially distally-oriented flow capable of exiting the open distal end of the aspiration lumen.