Surgical Needles TRIZ Cases

Magnetic guidance aligns a marker cannula through a biopsy needle, preventing push rod severing during lateral deployment.

A brush with parallel hair rows fixes longer hairs to a stiff strip for scraping while shorter hairs retain material.

A needle holder clip disengages via lateral movement to detach from the guide arrangement without retracting the needle.

Rotating the inner tube winds a snare coil around tissue, enabling larger sample collection without increasing device complexity.

A skin biopsy device uses a fusiform blade and spring-loaded firing pin to generate consistent tissue samples.

A modular needle biopsy device integrates a detachable housing and compressible protection shaft for safer handling.

A bone coring device transforms rotary handle motion into linear inner member movement to cut through cancellous bone.

Radiodense indicia on a radiolucent outrigger provide real-time angular trajectory guidance, preventing cortical bone penetration errors and neural injury.

Power-driven sternal penetrator limits insertion depth to prevent posterior cortex damage while establishing reliable intraosseous access.

A biopsy probe assembly uses a safety alignment pin inserted into a continuous passage to lock movable components in correct relative positions.

A microfracture device uses a guide shaft with a curved tip to orient a flexible element for precise channel creation in subchondral bone.

A sampling patch uses 4 to 25 micro-needles to collect epidermis samples.

A biopsy needle with independent inner and outer needle emission assemblies enables flexible rear or side targeting.

A telescoping biopsy needle uses a rigid distal extension to enhance steerability and stability during minimally invasive procedures.

Conical surfaces enable one-handed detachment via quick-release buttons, resolving the trade-off between structural stability and ease of operation.

A transseptal tissue coring device creates a persistent atrial shunt via percutaneous catheter delivery.

A bone scoring device uses a biasing member to rotate an abrasive scoring member against bone tissue.

Expandable fluid chambers seal body cavity sections to isolate treatment zones, preventing chemotherapeutic agents from affecting healthy tissues.

Flexible vacuum tubing routes suction through a modified biopsy hub, enabling effective tissue sampling within the restricted space of a CT gantry.

Curved connecting sections in the needle body form a smooth aperture that reduces tissue damage and infection risk during implantation.

A biopsy needle guide uses a marker pin with pivot axes in the traverse plane to simplify angulation.

Cooling fluid channels protect healthy tissue from overheating while delivering precise microwave energy for tumor ablation.

An ultrasound catheter system uses an actuator to track probe position relative to the treatment zone.

A biopsy needle cradle bears against the outer cannula wall to resist bending forces during tissue sampling.

Infrared laser pulses liquefy tumor tissue to lower interstitial fluid pressure, enabling precise drug injection without mechanical needle damage.

An arcuate-edged collection plate conforms to tissue trap contours, resolving maneuverability issues while ensuring thorough biological matter extraction.

A bladeless obturator uses arcuate dissecting edges to separate tissue without sharp puncturing during minimally invasive procedures.

An automated grid localization system transmits coordinates to indicators, eliminating manual transcription errors and reducing procedural time.

Dual beveled tips on a hollow needle gather and sever tissue samples, resolving the trade-off between fabrication simplicity and reliable sample capture.

Angled retaining grooves on a biopsy needle improve tissue retention without requiring rotational insertion, simplifying the procedure.

A dual-mode surgical instrument combines microwave antenna and radiofrequency electrode functions within a single shaft assembly.

A drive mechanism converts transverse actuator motion into linear puncturing movement for medical insertion tools.

A swallowable capsule uses an expandable wall to increase internal volume for gastrointestinal substance collection.

Radial electrodes deliver uniform radiofrequency energy to ablate marginal tissue, preventing tumor recurrence.

Stationary curved outer cannulas allow straight inner tubes to reciprocate without seizing, reducing frictional heat during neurosurgery.

A localizing obturator uses a contrast agent-filled bore to enhance MRI visibility of the biopsy site.

An intrabody probe system applies anatomical schema rules to real-time sensor data for precise structural identification.

A cooled microwave ablation probe uses a balun short and dielectric buffer to confine radiation, preventing skin burns during chest wall insertion.

Integrated handheld ultrasound probe displays real-time vein images while magnetic field detection guides needle placement, reducing tissue trauma.

Segmented coring elements retrieve multiple tissue samples through a small puncture site, reducing trauma and improving diagnostic accuracy.

Segmented cutting edges compress and fracture tissue within a containment bag, reducing operating time while preventing malignancy spread.

A biopsy cannula system adjusts aperture and stroke length via an automated introducer mechanism.

A light applicator houses a distal LED and thick electrical lead for efficient heat dissipation.

Deflectable snap corners secure a biopsy targeting cube within a grid plate aperture, resolving guide cube shifting during MRI-guided procedures.

A multifunctional surgical instrument integrates scissors, clamping features, and gripping sections into a single pivotable device.

A skull-mounted trajectory guide uses a low-profile flange and adjustable stem to position the instrument precisely.

Segmented hollow needle guides at distinct polar angles eliminate real-time imaging requirements, reducing procedure time while maintaining placement precision.

Segmented rotation lock and friction mechanisms prevent inadvertent shaft rotation during off-axis loading, maintaining precise end effector orientation.

Vibrating electronic probe generates correlation images to compute ablation boundaries without ultrasound developers, eliminating allergic reaction risks.