Threaded Fluid Delivery for Viscous GI Wound Treatment

Solution Overview

Problem

Conventional fluid delivery devices struggle with efficiently delivering highly viscous fluids to treat conditions in the gastrointestinal tract, such as bleeding ulcers or wound sites, due to the high force or pressure required, which can deform or break device components and prolong procedure time.

Innovation Solution

A medical device with a threaded member and actuator system that uses a helical thread to transmit fluid distally with reduced force, allowing for the delivery of viscous fluids through a tubular member and deployment via a rotating brush for wound treatment and cytology sampling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional fluid delivery devices are used to deliver highly viscous fluids, then the fluid can be delivered to the target site, but high force or pressure is required which can deform or break device components

Engineering Contradiction:

Improvedevice component integrityVSAvoidforce required for fluid delivery

Core Design Contradiction:

ReliabilityVSForce

Solution Approach 1:

The device is segmented into multiple functional components: a tubular member for fluid passage, a threaded member for mechanical advantage, and an actuator system. This segmentation allows the force application to be distributed and amplified through the threaded mechanism, reducing the peak force required at any single point and preventing component deformation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The threaded member provides mechanical advantage by converting rotational motion into linear motion with force multiplication. This allows partial rotation of the threaded member to generate sufficient linear force to deliver viscous fluid without requiring excessive force that would deform device components.

Inventive Principle:

Principle #16Partial or excessive action

2Productivity

If conventional fluid delivery devices are used to deliver highly viscous fluids, then the fluid can be delivered to the target site, but the procedure time is prolonged

Engineering Contradiction:

Improveprocedure timeVSAvoidforce required for fluid delivery

Core Design Contradiction:

ProductivityVSForce

Solution Approach 1:

The threaded member provides mechanical advantage by converting rotational motion into linear motion with force multiplication. This allows partial rotation of the threaded member to generate sufficient linear force to deliver viscous fluid without requiring excessive force that would deform device components.

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The actuator system enables periodic rotation of the threaded member, creating rhythmic fluid delivery cycles. This periodic action maintains optimal pressure and flow rates for viscous fluids, preventing delivery stagnation and reducing overall procedure time compared to continuous low-force application.

Inventive Principle:

Principle #19Periodic action

3Reliability

If high force or pressure is applied to deliver viscous fluids, then the fluid delivery can be achieved, but device components may deform or break

Engineering Contradiction:

Improvedevice component integrityVSAvoidfluid delivery efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The device is segmented into multiple functional components: a tubular member for fluid passage, a threaded member for mechanical advantage, and an actuator system. This segmentation allows the force application to be distributed and amplified through the threaded mechanism, reducing the peak force required at any single point and preventing component deformation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The threaded member provides mechanical advantage by converting rotational motion into linear motion with force multiplication. This allows partial rotation of the threaded member to generate sufficient linear force to deliver viscous fluid without requiring excessive force that would deform device components.

Inventive Principle:

Principle #16Partial or excessive action

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

Facilitates efficient delivery of viscous fluids to treat wounds and perform hemostasis with reduced procedural effort, minimizing device deformation and reducing overall procedure time and cost.

Implementation Method 1

A medical device with a threaded member and actuator system that uses a helical thread to transmit fluid distally with reduced force

Methodology Applied

Scientific EffectHelical thread mechanical advantage: Screw

Implementation Method 2

An interaction between the threaded rod and the threaded inner surface of the fixed member may be configured to rotate the threaded rod and the threaded member

Methodology Applied

Scientific EffectThreaded interaction rotation: Screw

Implementation Method 3

A brush may be disposed at a distalmost end of the threaded member. The brush may be configured to rotate with the threaded member. Rotation of the threaded member may be configured to rotate a brush to collect a cytology sample

Methodology Applied

Scientific EffectRotational sampling: Brush

Data Source

PatentUS20250375192A1Medical systems, devices, and related methods for delivery of fluid and/or collection of cytology samples

Publication Date: 2025.12.11 BOSTON SCI MEDICAL DEVICE LTD

AI summary

Disclosed are medical devices. In an aspect, a medical device of the disclosed medical devices may comprise a tubular member defining a lumen, a threaded member extending through the lumen, and a handle including a threaded rod coupled to the threaded member, a fixed member with a threaded inner surface, and an actuator configured to translate the threaded rod distally. An interaction between the threaded rod and the threaded inner surface of the fixed member may be configured to rotate the threaded rod and the threaded member.