Pressure Infusion TRIZ Cases

Alternating contrast and saline injection phases via a single device reduces extravasation risk while maintaining imaging quality.

A rotating compression member collapses a medicament reservoir to expel high viscosity fluid while reducing device complexity.

A rigid needle insertion mechanism advances and retracts a drug delivery pump needle using integrated biasing members.

A two-stage infusion inserter uses a rotatable button to drive a sliding component and needle carrier for automated cannula deployment.

A telescopic piston rod assembly drives a medicament bung via nested segments that retract to minimize device length.

Segmented adapters expand fixed compartments to hold larger reservoirs, eliminating the need for multiple infusion devices.

Stop teeth on the syringe prevent excessive rotation and disconnection, resolving reliability issues for users with limited dexterity.

A downstream occlusion sensor detects fluid path pressure changes to identify blockage locations within a transfusion pump mechanism.

Integrating a pump module directly onto a flexible pouch eliminates external supply tubes and reusable pumps that increase contamination risks.

An expandable bellows reservoir in a Y-site device blocks downstream flow during syringe injection, preventing dilution of small volume drug dosages.

Rotating the administering device eliminates static unbalance while segmented adhesives enable temporary detachment for water protection.

Internal bores in a drive system slide vent air from the reservoir to prevent entrapment and ensure reliable medication delivery.

A one-way valve uses a movable sealable cavity to accelerate gravity filling of infusion lines.

A catheter insertion device uses a detent actuator to deploy the cannula and retract the needle.

An articulation member pivots the cannula while uncoupled housings distribute tubing strain, reducing skin advancement.

Suction-driven free pistons replace leadscrews in a multi-chamber reservoir, eliminating the drive mechanism footprint and reducing overall device length.

Relocating locking to the ferrule reduces radial volume and prevents detachment under thrust.

A syringe holding structure uses a rotating flange-receiving groove to secure the adapter case.

Percutaneous catheters deliver therapeutic agents at 150 cc/min or higher, reducing systemic toxicity while maintaining high regional drug concentration.

A patch-pump mechanism opens a liquid channel between a prefilled drug reservoir and a cannula assembly during activation.

An ecological interface display organizes patient cardiovascular and ventilation data into abstraction hierarchies to support real-time clinical monitoring.

Electromagnetic brake detects pusher contact with syringe head, preventing involuntary bolus while allowing safe manual adjustment.

Sequential syringe processing prevents direct source connection, eliminating air contamination and CO2 flooding risks in controlled medical fluid delivery.

Integrated light sources activate adhesives to resolve strength versus disconnection trade-offs.

Prestress forces an engagement member into automatic coupling, eliminating manual operational force and preventing user forgetfulness during drug delivery.

Rotating sleeve expands elastic member to move holders, then contracts it to retract needle while flexible locking protrusion stabilizes cannula position.

Elastomer over-molding and optimized motor control reduce vibration in a portable drug delivery device, improving patient comfort during long-term use.

A wearable electromechanical pumping assembly drives a plunger to deliver therapeutic substances in discrete motions.

A micropump rotor uses axial displacement profiles to detect occlusions without external sensors.

Nested shafts adapt to variable plunger positions in drug cartridges, ensuring consistent substance delivery without complex fixed gearing.

An elastomeric seal prevents outlet-to-inlet leakage by dynamically adapting to pressure differentials for accurate metering.

An administering instrument fixes a needle tube at an angle toward the contact surface to maintain secure attachment during drug delivery.

T-slot geometry aligns the plunger rod while threaded couplers secure the assembly, enabling field serviceability without specialized tools.

A bolus control device integrates a compressible check valve to regulate fluid flow through an adjustable cracking pressure mechanism.

A DC-DC step-up converter supplies pulsed power to a medical pump stepper motor, reducing battery weight and size while maintaining reliable fluid delivery.

Segmented levers and dimensionality changes enable large needle travel in compact patch devices without sacrificing actuation reliability.

Self-latching elastic components simplify lock mechanisms to reduce operational complexity.

Spring-biased drive wheel anchors piston rod to prevent inadvertent medicine dispensing from pump impacts.

An occlusion management system activates emergency elements to provide additional force for fluid delivery.

A reservoir assembly plunger utilizes a screw-coupled pressing member to generate constant pushing force for precise medical liquid delivery.

A disposable drug delivery device uses a rotatable fastener to join injector and cartridge fluid couplings during deployment.

A rotary actuation mechanism moves a subcutaneous delivery member between retracted and extended positions, eliminating bulky motor-driven gear sets.

A slide link cam mechanism compensates for manufacturing tolerances to ensure complete closure of the clamp.

A wearable thermal sensor detects skin temperature changes to track medication flow, preventing premature device removal and ensuring complete dosage delivery.

Integrating a rotary piston pump into the closure piece reduces fluid-tight connections, improving reliability while increasing manufacturing complexity.

A coupler device aligns a flow control valve to an infusion system using a swage and luer lock fitting.

Modified intramuscular needles and computer-controlled pumps maintain steady state serotonergic drug levels, avoiding intravenous thrombophlebitis.

An infusion pump delivers a high-flow bolus to clear microbubbles from the air-in-line sensor observation zone.

Cap member attachment maintains the flow path closing portion in a closed position, preventing unintended infusion solution delivery during filling operations.

A syringe pump module uses a non-decoupling drive mechanism with bidirectional motor actuation for smooth plunger movement.