Automatic Syringes TRIZ Cases

Spring-actuated drive member engages abutments to lock the needle shroud, resolving the trade-off between injection force and post-injection safety.

A medicament delivery subassembly uses a deflecting support structure and sleeve portion to release the plunger rod.

A handheld injection device uses a flexible clicker arm to provide tactile and audible feedback during dose dispensing.

An assembly key with a locking bit prevents unintended extension of drug delivery system components during transport.

A surgical needle accepts detachable aspiration, injection, and electrode modules for multi-step procedures.

Pivotal angled trigger rotates parallel to the injection axis, enabling comfortable one-handed operation for users with limited mobility.

Automated injection devices integrate an optical detection system to identify blood presence in the needle hub, preventing vascular injections.

An automated injection device uses an articulation element to move a pusher plate for simultaneous fluid dispensing from multiple syringes.

A wearable articular administration device uses a programmable pump to deliver active ingredients directly into joints.

A supplementary device couples to an injection dosage selector and uses a torque sensor to determine the selected dose amount.

Control unit monitors drive train actuation steps to detect blockages and underdosing, prompting user intervention for cartridge replacement.

A pressurized fluid system propels therapeutic agents through a catheter with an outlet slot to redirect flow toward target sites.

A syringe connection module uses a threaded receiving sleeve to detach the cannula without manual handling.

A drug delivery device uses a prism to deviate number wheel markings by 90 degrees for clear dose indication.

Viscous damping in the retraction sleeve cavity delays axial movement, preventing premature needle retraction and ensuring complete medicament dose delivery.

Rotating head portion transitions between locking and release positions to disengage the syringe plunger from the piston body.

Radially flexible blocking members in a medicament delivery device enable controlled propellant source movement.

Safety shield indicator provides visual and tactile feedback when the autoinjector reaches the active injection position.

An automated injection system regulates needle speed and fluid distribution to resolve uneven filler placement and tissue damage during subcutaneous treatments.

A user device scans injection devices to calculate threshold times for warming from storage temperatures, alerting patients before doses expire.

A substrate device retains a radiation probe and fluid line to maintain constant geometry during nuclear medication delivery.

Replacing mechanical springs with a thermally activated shape memory alloy ensures consistent delivery across varying viscosities.

A semi-automatic injection device uses a torsional spring and gear to deliver a predetermined medicament dose.

A plunger mechanism uses a bias force to deploy an insertion needle through a removable tab release, resolving speed and control precision trade-offs.

An electromagnetic driver controls lancet velocity and penetration depth to improve blood sample yield.

Dual back-to-back force springs eliminate non-symmetrical bending loads on plunger rods, preventing breakage and jamming in medicament delivery devices.

Resilient liner compresses radially via cam action to grip rigid needle shields without angular alignment.

Segmenting the controller from the injector assembly via wireless links frees users from fixed stations, enabling free movement during injection procedures.

Rotational actuation releases the plunger rod without axial displacement, maintaining compact device volume.

A plunger sub-assembly uses radially flexing engagement prongs to release a compression spring and retract the needle.

An autoinjector uses a planetary gear set to delay needle retraction, ensuring complete fluid delivery while preventing accidental triggering.

A medicament delivery device uses a safety mechanism to prevent unintentional activation of the plunger rod.

Motor body shell stops engage upper housing structures to guide precise syringe alignment during assembly.

Retractable needle shield with lock button prevents user injury by automatically enclosing the needle in disuse state without occupying barrel volume.

Safety shield isolating means decouple biasing force from patient skin during automatic deployment.

Lateral deformation of a flexible tab guides engagement through distinct zones, preventing accidental triggering while maintaining simple device complexity.

A medication delivery system uses a sensor circuit and transmission hub to monitor device usage and location via wireless communication.

A magnetic drive system moves an injection plunger using inner and outer magnets to enable precise pharmaceutical delivery.

A subcutaneous injection system integrates a pressure sensor and electrical nerve stimulation to guide precise needle placement.

A pneumatic safety syringe uses compressed gas from a ruptured cell to retract the needle into a plunger lumen after injection.

A ratchet arm mechanism enables dose reduction in wind-up injection pens without breaking small parts.

Segmenting the reservoir and pump mechanism enables precise fluid delivery control while maintaining simple device structure.

Rotating cap initiates drug mixing and locking to prevent premature activation, ensuring reliable emergency administration.

A mounting adapter connects add-on devices to injection devices via an electrical conductor for signal exchange.

A drive mechanism adjusts maximal driving force based on bung position to overcome initial stiction and dispense variable drug doses.

A gearbox converts spring translation into modified output force using screw threads to adapt injection dynamics.

Segmented locking components prevent accidental activation while maintaining simple operation for frail users.

Partial needle retraction via a spring mechanism expands the injection cavity to reduce tissue resistive pressure.