Surgical Needles TRIZ Cases

A flexible cannula with a double helix coil and inner tube prevents fluid leakage between coils during bone marrow aspiration.

A conical dilator features a wirelock mechanism to secure guide wires during voice prosthesis insertion procedures.

Absorbent endometrial collector channels menstrual fluid through a funnel into a reservoir, eliminating invasive procedures and anesthesia risks.

A retractable electrode tip extends beyond the instrument nose to deliver energy while a suction pipe evacuates fluids.

A biopsy needle guide uses a slide button and spring to separate the guide needle from the core needle.

A capacitive electrosurgical apparatus transfers energy via a single active electrode to vaporize tissue at controlled temperatures.

Microporous biotextile enclosure restrains tumor invasion and uses fiducial markers for early detection, avoiding unnecessary ovary removal.

A delivery catheter features a pre-set bend and blunt tip to navigate the annulus fibrosus circumference.

Positioning a vacuum tube above the electrode captures rising smoke plumes while preserving the surgeon's view of the surgical site.

Nebulizing catheter generates aerosol to coat large areas without pooling, while central controller manages gas flow to prevent dangerous pressure buildup.

Segmented parallel tunnels minimize exit area to lower delivery pressure and prevent liquid-powder separation in viscous bone cement.

Computer calculates ablation volume growth rate from temperature readings to determine procedure completion.

A nitinol needle recovers its arcuate shape after passing through a straight cannula to position an inflatable bone tamp.

An integrated needle protection mechanism covers the tip before insertion, reducing stick injury risks while maintaining ergonomic usability.

A tapered RF ablation catheter navigates the vein of Marshall to eliminate abnormal electrical signals while minimizing vascular damage.

A catheter operating handle uses a threaded screw mechanism to toggle between deflection and rotation modes via a sliding collar.

A safety needle device uses a movable protecting shield and resilient means to automatically lock the needle after use.

An orthogonal fibre layer on a support rod improves sample release capacity while simplifying manufacturing compared to complex flocked alternatives.

A helical distal structure enables safe swallowing while centrifugal elution automates buffer release to reduce handling risks.

Segmented high-aspect-ratio slots prevent debris occlusion in electrosurgical smoke evacuation without increasing instrument size.

Frictional retaining means resolve the contradiction between ease of operation and injection accuracy by allowing controlled pushing rod movement.

A biosensor insertion device uses pre-compressed elastic members to drive automatic needle insertion and retraction.

A bipolar electrode probe delivers RF energy to coagulate and constrict hollow anatomical structures, reducing surgical trauma and recovery time.

An endoscope with an internal magnet couples to an external skin magnet, enabling direct PEG device insertion without guidewires or upper GI tract delivery.

An electrical ablation device applies controlled pulses to induce irreversible electroporation, eliminating thermal damage to surrounding healthy tissue.

Dynamic power state transitions prevent active element overheating during air exposure while maintaining optimal temperature for effective tissue treatment.

Optical hydrology arrays detect water displacement in tissue to prevent over-desiccation and ensure precise vessel sealing.

Segmented locking mechanisms prevent unintended needle protrusion and channel damage under external bending forces.

Segmented filaments create larger lesions at lower peak temperatures to reduce tissue trauma during spinal procedures.

A surgical cup stabilizes slippery uterine tissue via suction, allowing a corkscrew tool to anchor the mass without multiple repositioning attempts.

A stylet pulling mechanism creates a hollow channel in flexible delivery tubes using friction-based wire drive.

A surgical needle anchor engages hollow organs to retract them during laparoscopic procedures.

A catheterization device uses a curved drain and elongated guiding portion to facilitate insertion.

Remote adjustable percutaneous guide sets insertion angles via external actuators, reducing ionizing radiation exposure during imaging procedures.

Aspirate valve manages vacuum pressure to prevent tissue stalling during biopsy extraction.

Segmenting the flexible membrane from the absorbent pad allows clean cutting around drainage tubes, preventing fiber loss into the wound.

Segmenting the needle into an array and merging multiple channels boosts procedure efficiency while maintaining invasive treatment reliability.

Segmented bristle patterns on a compact swab head resolve the trade-off between collection efficiency and patient comfort during buccal cell sampling.

A biopsy device uses a selective coupling mechanism to decouple the cannula and stylet from the actuator assembly.

Segmentation and nesting principles enable full-sized instrument heads on minimal incision shafts.

A steerable delivery system injects treatment agents into ganglionated plexus sites during cardiac surgery.

A surgical instrument integrates a fluid management system within its mounting portion to enable precise tissue cutting and coagulation.

A power splitting device divides microwave energy into multiple channels, resolving the difficulty in determining ablated tissue area or volume.

A tissue removal device uses a movable piston to generate vacuum pressure for cutting.

External helical transport tube rotates to move tissue samples proximally, avoiding internal element rotation that damages sample quality.

Curved grooves along the slopes of a tapered suture needle distribute applied load to maintain sharp angles and structural integrity.

A repositionable epicardial implant adjusts an expandable cuff via a detachable positioning device to resolve incomplete occlusion risks.

A surgical kit uses a blunt penetration tip to create cavities and a sharp entrance end for precise tissue extraction.

An elastomeric tip deforms elastically to prevent cardiac perforation during intracardiac capsule implantation.