Flocked Medical Device Surface Fixation
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Solution Overview
Problem
Conventional wound closure devices require significant manual dexterity, time, and may compromise mechanical stability, leading to insecure wound closure and cosmetically unappealing results, while self-fixating devices with barbs can weaken the device structure.
Innovation Solution
A flocked medical device utilizing flocking technology that enhances surface area and friction without impairing mechanical properties, allowing for knotless or sutureless fixation, with adjustable flock material characteristics for tissue integration and additive retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If barbed devices are used for self-fixation, then fixation capability is improved, but device diameter is reduced which impairs structural integrity and mechanical stability
Solution Approach 1:
The patent changes the geometric parameters of the device by adding a flock coating layer with controlled thickness, density, and fiber characteristics. This allows the device surface to be modified without altering the core structural dimensions, enabling enhanced fixation through increased surface area and friction while preserving the underlying mechanical integrity of the device body.
Solution Approach 2:
The patent creates a composite structure by combining the base device material with a flock coating layer. This composite approach allows the device to exhibit both the mechanical properties of the base material and the fixation properties of the flock layer, achieving secure tissue attachment without compromising structural strength.
2Reliability
If conventional wound closure devices are used, then wound closure is achieved, but operation time is increased and manual dexterity is required
Solution Approach 1:
The patent implements self-service by enabling the device to perform its own fixation function through the flock coating's inherent friction and adhesion properties. The device automatically secures to tissue upon application without requiring additional suturing, knotting, or complex fixation steps, thereby eliminating the need for manual dexterity and significantly reducing operation time.
3Strength
If device diameter is reduced to maintain structural integrity, then mechanical stability is preserved, but fixation capability is impaired
Solution Approach 1:
The patent resolves this contradiction by transitioning from a one-dimensional solution (changing device diameter) to a two-dimensional solution (adding surface coating). The flock coating layer adds fixation capability in the radial dimension without affecting the longitudinal dimensions that determine structural integrity, allowing both requirements to be satisfied simultaneously.
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 flocked medical device facilitates secure, efficient wound closure with reduced need for additional fixation methods, minimizing foreign body reactions and enabling controlled release of additives, while maintaining structural integrity and cosmetic appeal.
Implementation Method 1
The enlarged surface advantageously contributes to enhanced friction forces which improve fixation and adhesion of the device within a patient's body
Implementation Method 2
The flock material is attached to the device body by means of an adhesive layer
Data Source
Figure 1~2
AI summary
The invention concerns a medical device comprising at least one device body and a flock material, methods for manufacturing the medical device and a surgical combination comprising along the medical device a delivery instrument.