Surgical Needles TRIZ Cases

Segmented elastomeric sleeve and locking cap prevent recoil and leakage across varying device diameters.

A lightweight device warms and humidifies insufflation gas using a reactive agent envelope.

Offset sample rod aligns along the inner wall of an outer cannula to hold tissue samples using radial forces.

A dual pump fluid management system directs selective infusion and aspiration through integrated valve assemblies.

Segmented adhesive flaps on a medical dressing prevent edge lifting and dislodgment of catheters under applied forces.

An inserter collar uses engagement members to secure a sensor module before insertion.

Segmented stabilizer members with adhesive tabs secure intraosseous needles, resisting displacement from fluid source connections.

Cluster electrode introducer orients cooled tips to generate large heat ablation volumes, reducing multiple tissue insertions.

A uterine manipulator secures cervical tissue using a bell housing and rod member to compress the cervix between solid surfaces.

A hollow biopsy needle with a distal cutting edge uses oscillating longitudinal movement to collect tissue samples efficiently.

A securement device grips a cannula hub via a dynamic clamp to stabilize intraosseous access.

A renal denervation catheter uses radial needles deployed by an inflatable balloon to penetrate vessel walls.

Multi-pole radiofrequency ablation catheter probes physical characteristics to generate a three-dimensional model of the operation area.

A surgical instrument with a locking mechanism enables single-handed tool positioning and orientation control.

An anti-seeding arrangement uses sensing means to control electromagnetic field generator bursts for rapid tissue denaturation.

An adhesive carrier medium transfers tissue samples from a biopsy needle into indexed compartments, preventing sample deformation and mixing during removal.

Expandable plates move radially outwardly via a threaded stem mechanism to dilate endovascular lumens without slow fluid inflation.

Protrusions engage grooves to stabilize optical fiber position, preventing alignment shifts during photoacoustic imaging.

A self-inserting specimen retrieval assembly deploys a flexible bag through a single incision without requiring separate trocars.

A powered intraosseous driver uses a threshold force switch to activate the motor only during bone insertion.

Segmented steerable catheter enables precise septal puncture while minimizing atrial trauma through intermediary stabilization.

Off-center compression plate enables asymmetric radiation source rotation for natural patient positioning.

A biopsy device uses a pre-evacuated vacuum container to decrease pressure in the tissue compartment, eliminating electric motors and reducing complexity.

An impedance bridge measures electrical properties via needle electrodes to determine tissue types, preventing misplacement during biopsies.

A needlescopic instrument system uses a hollow sleeve to attach interchangeable laparoscopic heads directly within the body cavity.

Leveling components align the needle-entering layer with CT or MRI scans, resolving positioning errors from gantry inclination.

A bipolar electrosurgical probe heats tissue to induce thermal coagulation necrosis during withdrawal.

A needle-suture combination uses a reduced connection cross-section to pull through tissue openings with minimal resistance.

A liquid sealant cures into an impervious film at the dressing-skin interface to create an air-tight barrier.

A disposable core needle biopsy device features a cocking mechanism and selectable firing modes for tissue sampling.

Non-ferrous linear actuators eliminate magnetic interference in MRI-guided biopsies, removing ferrous material constraints and streamlining procedure workflows.

An assay using an ester substrate on a pH strip detects gastric lipase to verify feeding tube placement, reducing reliance on X-ray examinations.

Segmented chambers and porous mesh filters separate bone dust from fluids, preventing clogging during continuous surgical suction.

An integrated endoscope sheath uses a sealing member and filter to prevent backflow while enabling automatic, continuous body fluid collection.

A cryobiopsy probe freezes tissue onto a head, then accelerates a support tube to tear the sample cleanly from surrounding mucous membranes.

Asymmetric reflector directs microwave energy to minimize non-targeted tissue heating during tumor ablation.

A brachytherapy guiding unit couples interstitial needles via transverse displacement to secure treatment delivery.

A pen-style microneedling machine uses a rotary motor and motion translation device to drive reciprocating needle oscillation.

Integrated pump delivers fixed fluid volume to inflate the trocar collar, eliminating external supply risks and preventing over-inflation injuries.

A fixation device with integrated ultrasonic transducers localizes patient anatomy and locks into position for accurate medical device insertion.

Nested conductive coils between cannula walls enable direct tip tracking, resolving the trade-off between measurement precision and device complexity.

Segmenting the probe from the powered handle eliminates tethering constraints while maintaining sterility through disposable components.

Flexible ends distribute stress away from the AV node while the 3D shape restores native annulus geometry for complete leaflet coaptation.

Actuated flexible beam members bend the guide portion to align the instrument axis, reducing manual adjustment time.

A closed-circuit dressing system envelopes a PICC site with a breathable bag and waterproof film to maintain hygiene.

A biopsy sampling portion rotates at 100 to 10,000 RPM while axially advancing into soft tissue.

A sheath stop component limits distal movement of a medical tool within an endoscope scope, resolving manual positioning variability and improving consistency.

Segmented bone access instrument with tapered cutting edges and cannula guides surgical tools through narrow cervical pedicles, reducing breach risk.

Nested safety sleeve with self-engaging locking means prevents accidental retraction, protecting healthcare professionals from sharps injuries.