Automatic Syringes TRIZ Cases

A removable sensor module detects relative rotation during delivery to record the dose and identify the medication.

Linked retaining arms secure the syringe and pressure jacket during angiography injection while allowing easier insertion and removal.

A flexible flange stretches or pinches skin to reduce slippage, while ergonomic activation supports reliable drug delivery.

Separate shield and safety-cap components cover the needle without a barrel spring, preserving insertion depth and fluid capacity.

Rotating the cap drives a hidden cam and elevation member to separate the needle shield axially with less user force.

Separate control and drive springs manage needle motion and medicament delivery, helping reduce impact while supporting high-viscosity dosing.

Segmented circumferential portions and integrated bearing elements simplify lock-ring tooling while supporting strength and alignment.

A movable locking element and release member let the plunger rod travel distally, combining reliable injection control with a more compact form.

Interior sensing measures force, pressure, and temperature inside syringes to reveal handling events and protect medical-device integrity.

A cam-track collar guides needle-shroud motion and blocks extension during delivery, reducing hold force for users with impaired dexterity.

A rotator structure replaces the bulky triple-layer actuator arrangement, enabling compact auto-penetration in a medicament delivery device.

A centering flange or stub guides the slim piston rod inside the product container, preventing jamming and uneven force application.

Radial spring decompression accommodates a larger spring diameter, increasing injection force for high-viscosity drugs without lengthening the delivery device.

A biased plunger rod and beveled hold-release structure enable reliable high-viscosity expulsion without rotation after storage.

A locked housing and releasable spring assembly separate metal and plastic parts after transcutaneous sensor deployment for recycling.

Interacting cap and activator holding elements secure the movable guard, limiting impact-triggered activation while air passages address suffocation risks.

A collar, control spring, and needle shroud provide tactile and audible feedback to confirm full-dose delivery and reduce premature interruption.

Magnetic sensing and a selectively engaged clutch support accurate dose calculation across pen-type injectable-drug delivery devices.

Directly sensing liquid on the needle or housing verifies administration and identifies wet injections or air-shots after discharge.

A single compression spring drives needle insertion, dose delivery, and retraction, reducing mechanism complexity while supporting complete dosing.

A single cover depression replaces the two-action sequence, automatically retracting the piercing member if the plunger is not released.

A peripheral force-transfer surface sequentially detaches the elastomeric stopper, lowering break-loose force for smoother drug delivery.

A flexible arm creates a one-way track that locks the guard after aborted delivery, preventing the medicament member from remaining exposed.

The telescopic guard extends through housing cut-outs to limit skin contact, reducing friction that can obstruct injection triggering.

Needle-shroud movement converts plunger travel into dose feedback, helping prevent premature injection interruption.

A deformable shoulder separates stored spring force from the plunger, reducing leakage and premature injection in prefilled syringes.

Collar decoupling during plunger travel provides audible and tactile confirmation that the injection reaches the full dose.

Sensor-guided site selection lets a robotic arm perform intravenous insertion autonomously, reducing failed attempts and skill dependence.

Separate control and drive springs support high-viscosity dosing while reducing needle-insertion impact for users.

Hall or optical sensors track plunger movement to show expelled and remaining drug, helping patients confirm dose completion.

Snap-fit joints keep the needle shroud coupled during injection, then allow movement at dose completion to signal a fully delivered dose.

A fluid-filled cavity slows a rotatable collar so needle retraction and end-of-dose feedback wait until medicament delivery is complete.

Separate control and drive springs manage needle motion and medicament delivery for smoother high-viscosity injections.

An anchored ratchet tube holds torsion-spring twist during dose setting while the scale drum helps confirm drug delivery.

To address injections above 1 mL, a cam-guided needle shuttle controls insertion and retraction for prolonged delivery and consistent skin contact.

A 20 mg octreotide lipid depot releases drug gradually, supporting symptom control and progression-free survival with dosing every two weeks.

A contoured cap-retention adapter and alignment base reduce cap distortion for accurate, repeatable injection needle removal-force testing.

Separate control and drive springs sequence needle insertion, medicament delivery, and retraction for smoother high-viscosity injections.

A proximity sensor detects injector detachment, locks plunger movement, and can indicate the amount of drug delivered.

A releasable housing latch unlocks when the needle guard moves, enabling palm activation with controlled injection and automatic needle protection.

A retracting outer frame removes the adhesive barrier during activation, securing the injection site and reducing continuous hand force.

Decoupling arms help keep the spring engaged through dose delivery, supporting complete dosing before safe needle retraction.

The auto-injector coordinates one spring across insertion, dosing, and needle retraction to simplify operation and help deliver the full dose.

A locking arm and single trigger coordinate automated needle insertion and retraction for safer, simpler delivery of high-viscosity medicaments.

Significant trigger force can damage prefilled syringes; a retractable guard and lock ring support gentler, controlled jet injection.

A sliding needle shroud and lateral release element help prevent bruising, accidental activation, and needle sticks during injection.

Inner and outer telescopic sleeves combine needle shielding and delivery actuation, helping patients with limited dexterity use the device securely.

An actuator moves the injection needle from use to a shielded position, supporting prolonged delivery while reducing needle-stick risk.

Pre-compressed springs coordinate biosensor insertion and retraction in one press, helping prevent discomfort from a piercing member left inserted.

A pin, dual ramps, and locking abutment stabilize the cover during dispensing, then prevent proximal movement after use.