Surgical Needles TRIZ Cases

Straight RF electrode extends from cannula side opening to create asymmetric heat lesions, resolving symmetric lesion limits in tissue ablation.

A dielectric loaded coaxial aperture directs microwave energy through a resonant structure to create a focused radiation pattern.

Near-infrared fluorophores affixed to surgical articles enable optical detection, replacing costly x-ray tags and reducing retained item risks.

Segmented needle guide portions actuate to release needles, enabling simultaneous multi-needle insertion for precise cancer therapy targeting.

Wire loops engage the proximal hub of a leadless pacemaker, reducing tissue damage risk during implantation and retrieval.

A locking mechanism with a biasing member secures an inner cannula relative to an outer cannula, preventing accidental tissue penetration.

A specialized brush biopsy device collects mucosal samples from the inferior turbinate for antibody testing.

A gastrostomy feeding tube coupling structure aligns the pull wire with the distal end to enable secure mechanical attachment.

A sterilizing cabinet uses a dual filter system with independent sealed interfaces to maintain sterility during agent passage.

Fluid delivery flushes blood and debris from tissue specimens in a biopsy collector, enabling clean sample removal.

PLA or magnesium needles dissolve automatically to eliminate reoperation risks and hospital stays.

Thermocouple junctions form directly on electrode surfaces to improve temperature measurement accuracy without increasing catheter complexity.

A guiding sleeve moves along an electrode to adjust exposure and enable radial expansion of segmented electrodes.

A biopsy device integrates optical fibers in its shaft wall to enable side-looking tissue characterization via diffuse reflectance spectroscopy.

Pulsed electric fields temporarily disrupt the blood-brain barrier to allow chemotherapeutic agents into brain tissue, resolving delivery limitations.

Elastic member reduces internal space around control wire to secure joint motion, resolving fixation reliability versus device complexity trade-off.

A multi-needle high-frequency skin treatment apparatus moves electrodes to precise subcutaneous depths for targeted energy delivery.

A puncture system employs a manual fixing element to cancel longitudinal displaceability of tubular bodies, preventing fluid exchange and reducing trauma risk.

A trocar assembly with a position retention sleeve creates pilot holes in bone to guide staple deployment.

Opposable jaws engage the subject while a spring-loaded support urges projections into the skin, resolving complexity issues in bioactive material delivery.

A brachytherapy template holder uses a flexible perineum attachment to conform to patient anatomy.

A biopsy valve spool actuates via cutter movement to seal lumens, preventing vacuum inefficiencies during tissue sampling.

Internal cams on a surgical hollow shaft position an instrument shaft to create an axial rinsing channel without disrupting fluid flow.

Orientation and alignment marks on the biopsy container enable precise image registration, correlating biopsy data with patient medical records for 3D analysis.

A universal medical device control console uses a microprocessor to provide a unified interface for multiple handheld instruments.

Diagonal passageways in the guide block allow rotation to reach all tissue areas behind the device, resolving limited access in MRI-guided breast biopsies.

A trocar and cannula system positions a sensor in the reticular dermis, while an antifibrotic coating prevents tissue reactions that degrade signal integrity.

A grid plate and tablet system automatically identify needle insertion coordinates from MRI images.

A tissue cutting device uses a reciprocating inner cannula within an outer cannula to sever biological material.

Visible indicators on a medical lead shaft show radial and longitudinal orientation, removing fluoroscopy needs during implantation.

A beveled needle houses source and detector fibers at opposite tip edges to enable optical spectroscopy.

A slotted needle enables serial fiducial delivery through a single endoscopic channel.

Polymer coatings swell into hydrogels upon tissue contact, sealing needle tracts to prevent drug backflow and tissue migration during procedures.

Asymmetric triangular dressing with conformability cuts secures catheters to lateral neck skin, preventing detachment during patient movement.

Plasma processing in mixed gas reduces surface roughness on puncture needles, minimizing piercing pain while maintaining structural integrity.

Analyzing skin ceramides and interleukin-33 levels identifies infants at risk of developing food allergies before symptoms appear.

An adjustable partoff tab secures cored tissue samples in a cutter tube, eliminating manual separation steps that increase procedure complexity.

Puncturing device creates a direct channel between the aorta and left atrium using radiofrequency energy delivery.

Integrating an LED shroud around the electrode resolves the trade-off between improved visibility and device clutter by merging lighting with the cutting tool.

Segmented anchoring needles fixate the template to internal tissue, preventing displacement caused by skin swelling and ensuring accurate irradiation.

Catheter uses real-time nerve feedback to verify complete ablation, eliminating trial-and-error attempts and reducing procedural time.

Rotating the outer sheath compresses internal arms that buckle radially outward, providing stable fixation without bulky balloons or loose sutures.

Integrated optical element directs electromagnetic radiation through a spaced inlet to identify malignant tissue and avoid blood vessels during sampling.

Biofunction elements on a spring-elastic guide capture specific samples in situ, eliminating complex suction mechanisms and reducing tissue injury.

Flexible needle assembly with a spiral cut having a continuously variable pitch allows greater articulation.