Surgical Needles TRIZ Cases

A medical instrument uses inclined surfaces and a spring-loaded locking element to secure tool elements at the distal end.

Embedding optical fibres in a transparent wall simplifies manufacturing and prevents fluid ingress while enabling detailed tissue inspection.

An adapter device attaches electromagnetic guidance sensors to medical instruments.

A manual hair transplanter uses a compressed spring to automatically withdraw the needle member after follicle implantation.

A thermal therapy system modulates energy delivery using real-time temperature feedback for precise tissue treatment.

Basket sieve separates dislodged cells from solid tissue, recovering diagnostic material to prevent tissue exhaustion.

Concave faces on a biopsy needle tip split tissue fibers to lower penetration force and minimize trauma during dense tissue sampling.

Automated needle placement unit integrates pressure, sound, and electrophysiological sensors for real-time feedback during epidural procedures.

A shunting catheter creates a controlled opening between the coronary sinus and left atrium to reduce pressure.

Integrating clamping and locking functions via a rocker element reduces device complexity while preventing unintentional displacement of aspiration needles.

A low profile transseptal catheter uses leaflet braces to form annular rings around mitral valve leaflets for stable prosthetic support.

Piston fins engage chassis slits to constrain the lancet holder, eliminating lateral wobble caused by assembly tolerances and draft angles.

An integrated marker delivery device merges deployment with the biopsy needle via mechanical alignment features, eliminating separate tool handling.

A corrugated backing layer holds a self-supporting substrate, preventing air leaks and maintaining sterility during negative pressure therapy.

An automated biopsy handpiece merges a motor, pump, and needle into one unit, reducing device complexity while maintaining reliable sample recovery.

A pressure-actuated liquid metal plug adjusts the geometry of a coaxial antenna to maintain optimal impedance matching during microwave ablation.

Twisted biopsy markers use angular segments to reduce artifacts and improve visibility in breast tissue.

Tissue markers provide reference points to align sheet-like implants in tendons, resolving positioning precision issues.

A multicore fiber sensor uses Bragg gratings to detect mechanical strain while isolating measurements from temperature variations.

Porous filter in tissue tray removes excess fluid from biopsy samples, preventing interference with imaging quality.

A biopsy needle joining structure uses an offset coupling member opening to inject brazing material between dissimilar metal tubes.

A bar member and suture assembly positions surgical mesh for ventral hernia repair without stay sutures.

Depositing a marker at the target tissue enables precise confirmation of successful biopsy access without increasing device complexity.

Deploying bipolar mesh electrodes before needle withdrawal seals pleural layers, preventing pneumothorax.

Real-time electromagnetic tracking overlays probe position on ultrasound images, resolving offline planning limitations.

A surgical needle assembly integrates a hollow shaft with an insulating member and a retractable resilient wire for precise tissue manipulation.

An imaging needle integrates a retractable probe and planar interposer to deliver high-resolution visualization through minimally invasive incisions.

Elastic generating component propels sensor insertion and retracts needle to reduce tissue damage and user pain during biosensor placement.

Integrated ultrasonic transducers localize targets within patient anatomy for precise medical device insertion.

A frameless image-guided biopsy system uses a six-dimensional robotic couch and laser alignment for precise needle placement.

Elastic biasing holds the conductive tip at a fixed length, eliminating operator fatigue from continuous force application.

A single-handed sampling device uses a telescoping sheath to expose a collection head for biological sample retrieval.

Segmented distal tips on a small-bore biopsy needle preserve cell integrity while reducing insertion force.

Spring-driven outer and inner cannulas capture intact tissue cores, eliminating crush artifacts from multiple passes.

Pre-interventional 3D data analysis determines the optimal fluoroscopy projection direction, reducing patient radiation exposure and procedure time.

Dual-tube endoscopic devices use a rotating wire to incise tissue within a working lumen, reducing dry taps and cauterization risks.

Optical sensor probe analyzes reflected light to identify blood vessels, preventing vascular injury during blind instrument insertion.

Controlled heating of non-superficial bladder tissue denervates afferent nerves while a cooling medium protects the mucosal layer from thermal damage.

A transseptal needle uses torsion and compression springs to extend its distal tip for puncture.

A medical suction device uses an actuated interacting member to clear lumen obstructions without removing the apparatus from the patient.

Segmented drape mats manage blood contamination while maintaining imaging transparency during prone breast biopsy procedures.

A configurable guide insert enables independent movement of a camera and blade within a surgical cannula.

Segmented voice prosthesis isolates fungus-obstructed inner cannula from durable outer cannula to maintain reliable speech function.

A catheter device with independently movable clamping components enables precise lateral tissue positioning.

Electrosurgical device identifies tissue types via spectral analysis, preventing damage to healthy tissue during procedures.

Uniform heating from a ferromagnetic coated conductor resolves deep tissue damage and charring while maintaining effective hemostasis.

A shape memory alloy inner cannula transitions from straight to arcuate to deploy biopsy markers through lateral needle apertures.

Nested cannula catheters deliver bulking agents into vessel walls to restore valve function while avoiding complex surgical interventions.

Hollow needle with helical slit maintains flexibility while dual cooling pipes eject liquid for uniform temperature control.

A hollow cylindrical biopsy element uses a deformable locking portion to close its cross section and secure tissue samples.