Guide Needles TRIZ Cases

Segmented flanges with arcuate shapes secure the hand against slipping, resolving ergonomic trade-offs in medical device handling.

A universal cannula device uses a flexible membrane to receive piercing members from multiple directions.

Porous mesh nitinol inserts provide predetermined blood flow rates, eliminating device retrieval and replacement caused by insufficient or over-embolization.

A pre-curved catheter reduces kinking during insertion by maintaining an optimal angle via elastic deformation.

A multi-catheter infusion system delivers medication through a cannula and multiple catheters with multi-orifice distal ends.

A detachable drive connector couples to sensor-equipped guidewires to transmit power and stabilize device positioning.

Nested blunt reinforcement needles provide axial support to advance flexible catheters without damaging posterior vessel walls.

A catheter hub attaches to a blood collection holder for single-needle sampling and infusion.

Longitudinal rods mediate friction between tubular layers in an expandable sheath, reducing push force needed to advance implants through the lumen.

A catheter system uses suction to retract heart tissue and enlarge the pericardial space for targeted drug delivery.

A needle guard assembly uses a resilient arm to bias a trap into a protected position within the housing.

A distal access balloon guide catheter with an embedded metal helix resists kinking in tortuous vessels while maintaining column strength for stroke treatment.

A hollow puncture needle incorporates a resin molded body inside the tip opening to prevent guide wire damage during manipulation.

Flexible distal sheath enables safe transcarotid access, reducing radiation exposure during interventional procedures.

A collarless guide extension catheter joins the proximal shaft directly to the distal sheath via a flattened attachment region and braided reinforcing member.

A surgical needle integrates a distal tip sensor with an adjustable advancing mechanism to measure tissue thickness and regulate insertion depth.

A catheter adapter uses a distally-facing side port lumen to direct fluid flow toward the septum for effective flushing.

Foldable hub wings with asymmetric ribs stabilize needle insertion in subcutaneous infusion devices.

Micro-textured catheter surfaces spread liquid tissue adhesive via capillary action, reducing curing time and infection risk.

A catheter add-on apparatus severs the tube via a threshold-activated blade to enable controlled disengagement.

An asymmetric drug injection channel steers the catheter through pressure changes, eliminating separate steering components and reducing wall thickness.

Bulbous distal end shields nerves and blood vessels from puncture while creating an echogenic pattern for precise ultrasound guidance.

An integrated piercing and guiding device reduces skin trauma and bleeding by eliminating separate needle removal steps during aesthetic injections.

A dilation catheter system merges guidewire illumination with integrated inflation control for precise anatomical passageway access.

A nested catheter system cannulates the uterotubal junction to access the fallopian tube lumen.

Modified polyolefin adhesive bonds proximal and distal shafts, suppressing sliding between components during coronary intervention procedures.

A sheath tensioner applies biasing force to an expandable balloon catheter for temporary puncture sealing.

An adhesive disease management system uses spring-loaded insertion and retraction mechanisms to deploy needles into patient tissue.

Segmented valve pieces and a nested retainer manage fluid flow while the guard mechanism protects the needle tip.

Radiopaque markers on the sheath enable precise positioning and tissue separation while minimizing vascular puncture risks during lead extraction.

Segmented components reduce assembly damage risk while maintaining fluid sealing strength through resilient joining mechanisms.

A hemostasis sealing device employs a dual seal system with a split septum to maintain leak-proof barriers around medical instruments.

Nested single lumens merge into one vessel to reduce infection risk and procedure time while achieving high flow extracorporeal oxygenation rates.

A base member with a soft cannula connects to an infusion cap via a self-sealing septum, reducing contamination risks during long-term medication delivery.

A single-handed insertion apparatus merges needle and syringe hubs to enable continuous ultrasound visualization during guidewire placement.

A hemostatic device uses a locator valve to channel fluid for positioning before injecting a sealing agent.

An accordion tube catheter adapter provides bendability and kink resistance for fluid communication.

Offset support structure presses catheter to suppress deflection without clamping, reducing sliding resistance for easier insertion.

A chemically etched proximal sheath section bonds securely to the handle assembly while maintaining a lubricious distal surface for instrument passage.

Segmented shaft design resolves the contradiction between large inner diameter for device delivery and navigability through tortuous vascular paths.