Wound Drains TRIZ Cases

Biocompatible liquid dissolves the holding material to release a compressed absorbent body, enabling precise placement and repositioning within body cavities.

A foldable urinary catheter uses a hinge with stabilizing means to maintain a straight configuration for insertion.

Segmented foam core manages high exudate volumes while maintaining intimate wound contact and accelerating epithelialization.

Baffles in the fluid pouch channel exudate away from the pressure source, preventing interference with wound therapy.

Segmenting the vacuum generator from the removable collection chamber simplifies emptying while maintaining reliable suction.

Periodic reverse pumping cycles flush inflow lumens to prevent tissue ingrowth clogs, maintaining continuous drainage without manual intervention.

Visual indicators on the catheter shaft reveal spatial orientation of the curved distal end, enabling accurate positioning within the prostatic urethra.

A wound care device combines membrane electrode assemblies for oxygen generation with a mechanical pump for negative pressure therapy.

A passive valve diaphragm switches ventilation holes based on pressure differences, releasing excess negative pressure without sensors or solenoid valves.

A self-expanding mesh support device creates a submucosal tunnel within the gastrointestinal tract to bypass stomach tissue.

A urinary catheter assembly features a bendable inner tube nested within an outer sleeve for compact storage.

Adjustable compression reduces infection risk during extended tube retention.

An external pressure sensor detects catheter status by comparing monitored pressure profiles against predetermined values.

External retention sutures prevent compaction while the dynamic tip adapts geometry to resolve guidewire blockage.

An electroactive polymer valve adjusts catheter resistance based on sensor feedback, reducing mechanical failure risks in shunt systems.

A sealant layer and collection chamber distribute negative pressure across surgical incisions to manage exudate.

A unidirectional valve directs flushing fluid through a catheter lumen to clear particulate blockages while keeping the drainage bag connected.

An implantable valve uses a radio frequency tag and masking element to alter resonant frequency, eliminating invasive X-ray procedures.

Polymeric film layers with closed cells resist external compressive forces to prevent fluid pathway collapse in negative-pressure wound therapy systems.

Lock mechanism secures adjustable force on diaphragm to prevent accidental vacuum level changes during wound drainage.

A wound separator diverts enteric fluids from a vacuum sponge to maintain sterile drainage.

Anisotropic foam resists longitudinal compression while enhancing lateral squeeze, resolving uniform sponge issues that hinder wound edge approximation.

An implantable system collects interstitial fluid in an accumulation chamber and dispenses it via a liquid transfer pump to remote body sites.

Closed-loop feedback controls active suction to drain abdominal fluid, preventing Abdominal Compartment Syndrome from elevated pressure.

A reduced pressure delivery system uses a blockage prevention member within the primary flow passage to maintain fluid communication with tissue sites.

A collapsible catheter design features a telescopic mechanism with cooperating coupling structures.

Porous carriers loaded with inorganic adsorbents accelerate coagulation while minimizing heat generation that damages surrounding tissue.

Segmented lumens and tapered apertures resist tissue ingrowth, reducing blockage risk while maintaining drainage efficiency.

Patterned drainage holes near the catheter tip enhance proximal flexibility for easier urethral navigation.

An adhesive wound closure device replaces sharp hooks to prevent tissue damage while enabling negative pressure therapy compatibility.

Porous polyurethane layers allow selective water vapor transmission to prevent excessive drying and maceration while maintaining a hermetic seal.

Integrating an RFID tag into the valve housing replaces cumbersome written medical files, enabling instant emergency data retrieval without invasive procedures.

A buoyant valve regulates cerebrospinal fluid flow by adjusting opposing forces based on gravitational alignment.

An enclosed urinary catheter with a sliding sheath reduces storage volume while maintaining hygiene through water-activated lubrication.

A neovaginal stent uses an inflatable balloon to expand the vaginal canal while a semi-permeable membrane surrounds the device.

A transcervical access method establishes retrograde blood flow through a shunt connecting arterial and venous sheaths.

Acoustic vibration replaces invasive diagnostics by generating controlled pressure to assess patency and reduce radiation exposure.

A shunt device drains cerebrospinal fluid from the cribriform plate region into the nasal submucosa.

Microtextured catheter surfaces with antimicrobial agents reduce reinsertion needs by preventing infection.

Computer-regulated solenoid valves control cerebrospinal fluid flow to eliminate operator variability and ensure standardized measurement reliability.

Outer lumens transmit dilution fluid into the inner lumen to mix with blood entering through eyelets, preventing clot formation and maintaining tube patency.

Handle and shaft extend reach to position the catheter, reducing contamination risk during female self-catheterization.

A bi-stable popper membrane shifts conformation to regulate cerebrospinal fluid flow through a cerebral shunt valve.

A medical assembly applies localized pressure via a segmented air bladder to treat venous ulcers.

Segmented stent design uses nested reservoirs and irrigation holes to provide prolonged medication delivery while maintaining cavity patency.