Surgical Needles TRIZ Cases

A compressive arming stroke simplifies biopsy actuation for smaller hands while damping impact noise during firing.

This case uses spring-loaded elastic arms and gear grooves to simplify stable, convenient angle adjustment in a needle guiding bracket.

Serrated opposing jaws and interjaw windows improve tangential access while preserving larger tissue samples for diagnosis.

A femoral-entry catheter uses a stiff working section and surface marker to cross neck occlusions without sacrificing vessels.

A movable insulating unit segments the micro needle surface to control current-carrying area, preventing tissue damage from excessive energy concentration.

A transcutaneous detection system uses an electrochemical sensor and a gas-permeable diffusion membrane to extract ethanol vapor from human sweat.

A sternal locator guides intraosseous needles to the sternum with precise depth control and alignment features.

Overlapping flexible obturators on a semi-rigid body prevent parastomal herniation while supporting bowel peristalsis.

A surgical mesh package channels sterilization gas through a dedicated network to ensure complete surface exposure.

Sensor assembly detects electrical parameters to verify probe insertion status and prevent thermal injuries from improper antenna placement.

A deflectable access sheath handle uses a tension gear and locking trigger to control distal deflection angles.

Embedded nanodiamonds in a catheter measure baseline tissue temperature to prevent unintended damage from inaccurate thermal estimates.

A drug depot delivery device uses a plunger mechanism to implant pellets beneath the skin.

Segmented needle assemblies employ a barrier membrane and pressurization device to reduce cell contamination and improve biopsy accuracy.

Laser welding joins intersecting filaments with radiopaque solder, preventing fraying while maintaining thin wall thickness for tortuous anatomy traversal.

Hybrid fiducial system calculates trajectories using both optical and electromagnetic tracking to reduce procedural time.

A biopsy container apparatus recovers dislodged cells from needle withdrawal using a basket sieve and buffer system.

Replacing electrosurgical thermal risks, the device uses mechanical rotation for precise tissue resection.

Transcutaneous stimulation electrodes on a surgical retractor detect femoral nerve proximity to prevent compression during minimally invasive spine procedures.

An integrated biopsy guidance system combines non-invasive imaging with optical spectroscopy for precise needle positioning.

Optical shape sensors in a tether determine instrument location relative to anatomy, resolving line-of-sight blockage issues in medical imaging.

Dynamic coil positioning reduces breast-coil distance to improve signal-to-noise ratio while clearing space for biopsy needle access.

Segmented electrode array applies electromagnetic energy to heat dermal collagen while independent cooling surfaces prevent epidermal burning during treatment.

A radiofrequency ablation system uses peripheral electrode placement to generate concentrated heat without direct tissue insertion.

A selector device chooses active electrode sub-arrays based on measured tissue impedance to direct high-frequency current.

Docking station extracts camera attachment for external imaging while maintaining internal cleanliness to resolve contamination risks.

Disposable cutting instruments with integrated suction overcome sterile reprocessing complexity and control issues in endoscopic biopsy.

A liquid-impermeable film holds an absorbent sponge in a compressed form for easy insertion into body cavities.

A cardiac lead extraction device uses a motor-driven bendable sheath to separate fibrous tissue from pacemaker leads.

Tilting the compression member creates asymmetric pressure zones that prevent positional displacement of the target object during lateral approach biopsy.

A flat blade shielded obturator uses a rotatable switch to control a movable shield, reducing insertion force and preventing unintended cutting.

Composite packaging layers absorb ambient humidity and block oxygen diffusion, extending device shelf life while maintaining sterility.

Synchronizing needle grip cycles with patient breathing reduces injury risk while preserving insertion accuracy.

Nested frame portions expand the collecting member volume to reduce multiple insertion cycles through endoscope channels.

Perforated endoscopic shaft transfers suction force to capture tissue, preventing polyp loss during snare procedures.

Vacuum harvesting and automated processing deliver uniform skin tissue particles, eliminating manual clumping and reducing epithelialization time.

A dual cannula biopsy instrument collects two adjacent tissue samples simultaneously using a shared handle mechanism.

Disposable needle assembly traps contaminants in a sealed chamber, eliminating internal contamination risks and reducing sterilization time.

An optical encoder with light blocking indicia transmits position data via fiber optics to a remote detector array outside the magnetic field.

Pre-computing heat distribution models in a database reduces computational complexity while maintaining accurate thermal profile predictions during treatment.

A rotating hollow biopsy member with circumferential cutting slits collects tissue samples via controlled oscillation and suction.

Raised and recessed portions in the coupling mechanism resist relative rotation, flexing, and axial translation to ensure accurate tissue sampling.

An integral spiral needle anchors threads via a single insertion, reducing tissue damage from multiple punctures.

A spring-loaded isocenter marker device moves a needle between retracted and marking positions to deposit precise alignment points.

A treatment device uses a locking mechanism with multiple stoppers to adjust the protruding length of the distal section.

A modular endoscopic device employs a rotating cartridge and instrument shaft to interchange end effectors within the body, eliminating tool removal.

A notch-locating fixture aligns small diameter steel alloy needle wires between a base and cover member for precise material removal.

Segmented heating zones in this visualization-enabled ablation catheter prevent healthy tissue overheating while enabling safe, single-handed steam delivery.