Infusion Syringes TRIZ Cases

A plug delivery device uses a frustoconical surface to wet and eject a plug through a lumen, resolving friction issues during void placement.

Resiliently biased locking member moves into a locking position upon cap removal to prevent full replacement on the housing.

Integrating the shaft into the hub wall eliminates transitional jerk during removal, preventing cardiac tissue damage and lead dislodgement.

A wearable insulin dispensing unit integrates a cannula interface for filling the reservoir without exposing the needle tip during normal wear.

An intermediary collar with pressure equalization channels prevents moisture ingress into electromechanical pump components during operation.

Vacuum-assisted hybrid insertion device places lubricant-free stopper in syringe barrel, eliminating silicone contamination risks.

A hollow cylindrical chamber device uses a plunger filter to separate liquid from fatty tissue during suction and reinjection.

An intermediary notch shield prevents the flashback notch from snagging the septum, ensuring smooth retraction and preserving fluid barrier integrity.

Segmented axial grooves in an elastomeric syringe needle cap equalize autoclave pressure, preventing cap separation and preserving sterility.

A medicated needle cannula uses micro-holes and a flexible membrane to deliver two distinct medicaments to separate injection depths.

Segmented telescopic arms compress into compact storage volumes while extending to deliver precise medicament doses.

Rotating needle changing apparatus selects and exposes patient needles for injection while maintaining sterile storage within the housing.

A flexible plastic biopsy valve with a seal curtain and flip cap enables remote irrigation access through the endoscope instrument channel.

A syringe stopper uses a self-centering nose and radial ribs to form an active seal within the barrel.

Dual-barrel injection device delivers biological fluids in a concentric flow pattern to minimize mechanical stress on cells.

Segmented base parts allow multiple cannula orientations without removing the mounting surface, solving retraction complexity.

A prefilled syringe plunger rod features a mechanical stop assembly that limits displacement to purge headspace air without expelling therapeutic product.

An electronic sensor system replaces manual visual drip counting to automate flow rate measurement and prevent delivery errors.

A vented fluid pathway system uses a hydrophobic membrane to separate gas from liquid medication in drug delivery pumps.

A protected needle assembly uses a resiliently biased inner barrel to enclose the hypodermic needle after deployment.

Integrating retaining members into the needle hub prevents inadvertent proximal movement while simplifying manufacturing complexity.

Segmenting the infusion pump into a reusable durable drive and disposable reservoir reduces waste by retaining functional components.

Fixed claws penetrate the needle-protecting cap material to maintain retaining force and prevent creep.

A secondary wire guide engages a tubular edge to advance simultaneously with a primary guide through blood vessels.

Multi-functional communication interface detects distance to prevent unauthorized use without adding separate authentication components.

A stopper design channels fluid through the trim edge to bypass obstruction from deformed edges, preventing device malfunction.

A drug delivery device integrates an electronic module into the dose setting member for precise dose recording.

Sleeve and retainer structure on the adapter body provides tamper evidence while maintaining fluid-tight seals between incompatible medical interfaces.

A syringe barrel integrates an absorbent material to separate aspirate components without mechanical trauma.

A tissue transplantation system uses integrated filtration and vacuum aspiration to process fat for injection.

A drug delivery cap uses a nested metal outer and plastic inner element with a deformable region for secure snap attachment.

A disposable infusion device uses a dual valve system with a toggle linkage to control fluid paths between the reservoir and pump.

A safety syringe redirects the needle tip using a transverse slide member to protect users from accidental contact.

Mobile cameras capture drug delivery device images to match distinctive visual features, resolving patient confusion between multiple device types.

A syringe sleeve applies mechanical pressure and chemical desensitization to reduce needle insertion pain.

A smart injection system uses electronic sensors to monitor injection parameters and verify medication authenticity.

Composite mandrels with iridium-tungsten alloys prevent tungsten contamination and erosion during pharmaceutical glass forming.

A hydrophobic membrane in the drip chamber vents gastric gases to prevent backflow blockages while containing liquid nutrients.

Flexible metallic laminas in a cap remover engage protective caps to solve the trade-off between needle sterility and manual dexterity for users.

A syringe adapter uses a tab and channel mechanism to restrict rotation in one direction for secure connection.

Segmented safety mechanisms with dynamic pins resolve handling trade-offs by preventing reuse and contamination while maintaining compact profiles.

Segmenting device shafts with strategic notches resolves the pushability versus navigation trade-off in complex anatomical paths.

Axial slots in the tubular body reduce activation force variability for safer needle shielding.

A subcutaneous conduit insertion device uses a dynamic latch mechanism to provide tactile feedback during deployment.

A semi-tubular syringe accessory secures the needle adapter against a distal transverse wall to prevent pivoting.

A disposable safety needle assembly uses a flexible internal member to shield the cannula tip after use.

Infusion pump system detects out-of-balance settings via feedback loops, preventing improper dosages from being administered.

Segmenting the durable pump drive from the disposable reservoir reduces medical waste while maintaining precise medication delivery.

Torque limiting mechanism protects dose setting from excessive force while gripping sleeve provides mechanical advantage for accurate dosing.

A syringe piston uses a friction spring element to retract the plunger after dispensing flowable materials.