Heated Irrigant Hemostasis for Internal Bleeding Without Packing

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Solution Overview

Problem

Existing treatments for bleeding in body cavities such as the nose, stomach, and urethra are inconvenient, time-consuming, and uncomfortable, often leading to complications like aspiration or prolonged healing times.

Innovation Solution

The use of an irrigant at a controlled temperature range of 46 to 52 degrees Celsius, delivered via a catheter or conduit, to treat bleeding by causing hemostasis through vasodilation and clotting, with adjustable flow rates and temperature control to enhance patient comfort and efficacy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hot water irrigation is used to treat epistaxis, then hemostatic effect is improved, but risk of aspiration increases

Engineering Contradiction:

Improvehemostatic effectVSAvoidaspiration risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a balloon as an intermediary device that occludes the choanal arch to prevent hot water from entering the pharynx and causing aspiration. The balloon acts as a physical barrier between the irrigation fluid and the respiratory tract, allowing effective hot water irrigation while eliminating the primary safety concern

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent applies preliminary anti-action by occluding the choanal arch with a balloon before performing hot water irrigation. This preventive measure blocks the potential pathway for aspiration before the harmful effect can occur, allowing the irrigation to proceed safely

Inventive Principle:

Principle #9Preliminary anti-action

2Reliability

If posterior packing is used to treat epistaxis, then hemostasis is achieved, but patient comfort deteriorates

Engineering Contradiction:

ImprovehemostasisVSAvoidpatient comfort

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the mechanical compression and trauma of posterior packing with thermal therapy using hot water irrigation. Instead of physically occluding vessels with packs that cause pain and tissue damage, the system uses heated fluid to induce vasodilation and promote clotting, achieving hemostasis without mechanical trauma

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the treatment parameter from mechanical compression (packing) to thermal energy (hot water irrigation). By controlling water temperature between 46-52°C, the system achieves hemostasis through thermal effects on vascular tone and clotting cascade, eliminating the discomfort associated with mechanical packing

Inventive Principle:

Principle #35Parameter changes

3Reliability

If hot water irrigation is performed manually, then treatment effectiveness is maintained, but treatment time increases

Engineering Contradiction:

Improvetreatment effectivenessVSAvoidtreatment speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent implements continuous hot water irrigation through a controlled delivery system that maintains steady flow at therapeutic temperatures. This continuous action ensures consistent thermal exposure to the bleeding site, achieving reliable hemostasis more efficiently than intermittent manual irrigation while maintaining treatment effectiveness

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The patent employs an automated temperature control system that maintains irrigant temperature within the therapeutic range without requiring constant manual adjustment. The system self-regulates heating and flow parameters to deliver effective treatment, reducing the time and skill required by the operator

Inventive Principle:

Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The method and device provide effective hemostasis while minimizing patient discomfort and reducing the risk of complications, such as aspiration, by using temperature-controlled irrigants to treat nasal, gastric, and urethral bleeding efficiently.

Implementation Method 1

The therapeutic temperature of the hot water is from 46 degrees Celsius to 52 degrees Celsius... the best effect occurs between 48 degrees Celsius and 52 degrees Celsius as vasodilation, edema of the mucosa, and subsequent narrowing of the intranasal lumen occur in this temperature range

Methodology Applied

Scientific EffectVasodilation:

Implementation Method 2

The hemostatic effect of hot water treatment for epistaxis may be caused by: (1) edema and narrowing of the intranasal lumen, (2) vasodilation of the mucosal vessels, (3) cleaning blood coagulates from the nasal passageway, and (4) elevated temperatures accelerating the clotting cascade

Methodology Applied

Scientific EffectThermal acceleration of clotting cascade:

Implementation Method 3

an irrigant pump in communication with the heating system and configured to motivate the heated irrigant to flow into the nasal passageway

Methodology Applied

Scientific EffectFluid flow control:

Implementation Method 4

a temperature controller in communication with the heating system and configured to maintain the temperature of the heated irrigant within a range from 48 to 52 degrees Celsius

Methodology Applied

Scientific EffectThermal control:

Implementation Method 5

Severe changes, including epithelial necrosis, occur when the treatment temperature is higher than 52 degrees Celsius

Methodology Applied

Scientific EffectPrevention of epithelial necrosis:

Implementation Method 6

Methodology Applied

Scientific EffectEdema:

Data Source

PatentUS12527906B2Device for treating bleeding

Publication Date: 2026.01.20 TELEFLEX LIFE SCIENCES LLC

AI summary

A system for treating internal bleeding via application of a heated irrigant, such that the heated irrigant is delivered at a flow rate of between 2 cc/s and 12 cc/s and at a temperature of between 46 degrees Celsius and 52 degrees Celsius.