Three-Layer Pelvic Support Knit for Stable Perineal Pressure

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Solution Overview

Problem

Existing pelvic bottom muscle support clothing fails to effectively prevent pelvic organ prolapse, lymphedema, and varicose veins due to inadequate force application and discomfort caused by direct upward pressure on the pelvic muscles, and deformation of the annular parts during movement.

Innovation Solution

The pelvic bottom muscle support clothing features a three-layer knitted structure with an intermediate layer forming an annular bulging part that provides cushioning and maintains contact with the peripheral genital organs, integrated knitted fabrics for reduced deformation, and an optional elastic cloth for enhanced pressure, ensuring a soft touch and effective support.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an annular part is used to apply force to narrow the vaginal opening, then the preventive effect on pelvic organ prolapse is improved, but the contact position shifts during movement reducing effectiveness

Engineering Contradiction:
Improvepreventive effect on pelvic organ prolapseVSAvoidcontact position stability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The annular part is formed as a bulging structure made of flexible knitted fabric that can deform with body movement while maintaining contact with the target area. The fabric's elasticity allows the annular part to adapt to changes in body shape during movement, ensuring continuous effective contact without position shift.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The knitted fabric's elastic recovery percentage is varied between different regions (central region has higher elastic recovery than side regions) to optimize both the preventive effect and position stability. This parameter variation allows the material to provide consistent supporting force while adapting to movement-induced shape changes.

Inventive Principle:
Principle #35Parameter changes

2Force

If force is applied upward to push pelvic bottom muscles, then muscle support function is improved, but the preventive effect on pelvic organ prolapse remains insufficient

Engineering Contradiction:
Improveupward supporting force on pelvic musclesVSAvoidpreventive effect on pelvic organ prolapse
Core Design Contradiction:
ForceVSReliability

Solution Approach 1:

The supporting force is concentrated on specific local areas rather than distributed uniformly. The annular part applies force specifically to narrow the vaginal opening, while the bulging part applies force to the peripheral portion of external genital organs. This localized force application addresses the limitation of general upward pressure.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The crotch part is divided into multiple functional regions with different force application directions: the annular part for narrowing the vaginal opening, the bulging part for supporting external genital organs, and the integrated knitted fabric for additional pelvic muscle support. This segmentation allows simultaneous application of forces in different directions to achieve comprehensive preventive effect.

Inventive Principle:
Principle #1Segmentation

3Reliability

If the peripheral portion of external genital organs is pressed, then lymphedema and varicose veins prevention is improved, but comfort is reduced due to direct pressure

Engineering Contradiction:
Improveprevention of lymphedema and varicose veinsVSAvoiddiscomfort from direct pressure
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The bulging part is constructed from flexible knitted fabric that distributes pressure over a larger surface area compared to rigid structures. This flexibility allows the force to be applied gently yet effectively to the peripheral portion of external genital organs, preventing lymphedema and varicose veins while maintaining comfort through soft contact.

Inventive Principle:
Principle #30Flexible shells and thin films

4Stability of the object's composition

If integrated knitted fabrics are used, then deformation during movement is reduced, but manufacturing complexity increases

Engineering Contradiction:
Improvedeformation resistance during movementVSAvoidmanufacturing complexity
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The outer knitted fabric and inner knitted fabric are integrated into a single unified structure through integral knitting. This merging of multiple fabric layers into one continuous knitted piece reduces deformation during movement while simplifying manufacturing by eliminating separate assembly steps for joining multiple fabric pieces.

Inventive Principle:
Principle #5Merging (Combining)

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 clothing effectively prevents pelvic organ prolapse and lymphedema by maintaining consistent pressure on the pelvic muscles, reducing discomfort, and promoting lymphatic fluid flow while minimizing deformation during movement.

Implementation Method 1

the intermediate layer is higher in thickness-direction cushioning property than the outer knitted fabric and the inner knitted fabric

Methodology Applied
Scientific EffectCushioning: Damping

Implementation Method 2

the central region is higher in elastic recovery percentage of elongation than the side regions

Methodology Applied
Scientific EffectElastic recovery: Elasticity

Data Source

PatentEP4710813A1Pelvic bottom muscle support clothing
Publication Date: 2026.03.18 MITSUI MEDICAL JAPAN CO LTD
  • EP4710813A1 patent drawingFigure 1(a)~1(b)
  • EP4710813A1 patent drawingFigure 2
  • EP4710813A1 patent drawingFigure 3(a)~3(c)

AI summary

The present invention makes it possible to enhance the effect of supporting a pelvic bottom muscle, preventing pelvic organ prolapse, and improving lymph flowing, and to provide a soft touch feeling at the time of wearing. This pelvic bottom muscle support clothing 10 is formed of a knitted material, and has a crotch part 13 formed of a three-layer structure including an outer knitted fabric 131, an inner knitted fabric 132, and an intermediate layer 133 therebetween. An annular bulging part 134 is formed by the intermediate layer 133 having a prescribed thickness. The inner knitted fabric 132, which is a portion that is brought into contact with the peripheral portion of the external genital organs of a woman, is formed to have a soft contact feeling to the skin, and moreover, the annular bulging part 134 has high cushioning properties. Therefore, it is possible to increase the pressing force to the peripheral portion of the external genital organs while easing the local feeling of pressure. It is also possible to promote the lymph flowing, and further enhance the preventive effect for lymphedema or the like.