Medical Devices TRIZ Cases

A tattoo machine control system links needle cartridges to specific slots using Hall effect sensors for automatic setting retrieval.

A polysaccharide and TLR2 ligand composition activates bone marrow myeloid cells without erythrocyte separation.

Internal electromagnet generates field to deflect catheter tip, reducing cost of bulky external steering systems.

An offset actuator mechanism rotates body parts to secure attachment on the gastrointestinal wall.

An implantable device uses ultrasonic transducers to encode electrophysiological signals into backscatter waves.

An abrading balloon catheter stimulates blood flow to deliver drugs locally, reducing extravasation damage.

Sliding covers secure a removable heat exchange body to improve thermal conductivity and allow visible fluid flow for easier cleaning.

A reduced pressure adapter uses channel elements to direct liquids into the primary lumen, preventing blockages in ancillary measurement conduits.

A pubic catheter sanitation unit seals the fluid outlet within a chamber to prevent leakage.

Unique reservoir shapes and asymmetric connectors prevent medicament mischanneling in multi-hormone infusion systems.

Hydrophilic wicking membrane covers fluid reservoir outlet to block air entrapment via capillary action, ensuring accurate medication delivery.

A syringe safety sleeve uses a rotatable contact element to prevent skin twisting during needle deployment.

A direction changing device mounts a catheter and sheath introducer in a curved configuration.

A heart rate monitor detects driver drowsiness by measuring physiological signals, triggering alerts before loss of vehicle control.

Motor-driven fluid delivery replaces gravity-dependent IV poles, enabling patient mobility during treatment.

A pre-pressurized chamber with a rupturing separating wall aerosolizes dry powder formulations.

A venturi-based anti-choking apparatus uses fans to create suction that pulls obstructions from the airway.

A valve flap mechanically blocks a cartridge until negative pressure releases it, enabling automatic spray activation.

Video analysis of fiducial markings calculates flow rates and verifies alarms, reducing false alerts while maintaining measurement precision.

A combined delivery needle and elevator instrument injects micronized allograft tissue directly at the surgical site.

Dual venting paths with hydrophobic filters prevent liquid ingress while independent pressure sensors detect clogging to ensure accurate insulin delivery.

Pressurized fluid entrains substances from a pierceable vial to form controlled aerosols, resolving sterile delivery and automation trade-offs.

Piezoelectric transducer in inhaler cap converts kinetic force to electrical signals for dose tracking.

A nasal delivery device uses a pressurized gas to entrain substances into a reproducible aerosol through an adjustable valve system.

A medical fluid control device uses dual flow paths to enable rapid bolus reservoir filling while sustaining continuous basal infusion rates.

Collapsible body generates audible feedback and automatic suction when expanding, resolving direction control trade-offs during vascular access procedures.

An inline fluid sensor system sources calibration fluid from an external treatment line to maintain measurement accuracy without internal storage.

An injection site information cap uses embedded RFID or NFC elements to automatically capture caregiver and procedural data upon coupling.

An elastomeric sleeve with a rigid helical coil prevents inward collapse during negative pressure therapy, ensuring consistent fluid removal.

Limiting piston displacement during release preserves spring stress, reducing device dimensions while maintaining medication impulse force.

An implantable infusion device adjusts therapeutic fluid delivery rates using internal catheter pressure monitoring.

Segmented retention elements remain in the stomach while the tube body is removed externally, eliminating repeated endoscopy and reducing perforation risks.

A subcutaneous access device uses a needle-actuated valve assembly to permit fluid flow through the passageway.

Segmented bolsters slide along the feeding tube and attract each other magnetically, reducing localized pressure at the exit site during weight changes.

A thermoelectric generator converts body heat into electrical energy to power wearable drug delivery devices.

Slide cavity and mouthpiece mechanism require deliberate disassembly skills, reducing child access hazards.

Mechanical etching prepares syringe needle interiors for uniform fluorinated coating deposition.

A subcutaneous access port uses a ratcheting needle shift mechanism to rotate the penetration site.

Segmented powder cartridge enables sequential unit dose delivery, reducing industrial filling losses and manufacturing costs for large dose inhalers.

Electronic control device initializes vaporizer parameters via low-power puff testing to establish baseline electrical characteristics.

A multi-sensory conditioning kit engages all human perception channels through integrated tools.

Dynamic glucose thresholds adapt to time and activity to reduce false alarms while maintaining reliable hypoglycemia detection.

A sorbent cartridge with urease layers measures dialysate solute concentrations via conductivity and pH sensors.

A controller manages partial adenosine injections based on distal pressure feedback, reducing patient discomfort while maintaining measurement precision.

A portable fluid warmer uses catalytic combustion to generate heat without electrical power.

A dry powder inhaler uses non-circular gears to vary the gear ratio during actuation for precise blister indexing and piercing.

A medical device display adjusts font size and color based on user distance using proximity sensors.

Blunt cannula tip reduces tissue trauma and prevents pellet misalignment during subcutaneous delivery.