Suction Docking Attachment for Hands-Free Prosthetic Interchange

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Solution Overview

Problem

Existing prosthetic phallic devices for sexual stimulation often require manual handling, are uncomfortable when mounted to surfaces, or necessitate specialized harness systems, making them inconvenient and limiting device interchangeability.

Innovation Solution

A suction-based attachment system featuring a body plate with a suction docking protrusion that uses an air vacuum to securely attach prosthetic phallic devices via a built-in suction cup, eliminating the need for additional connectors and allowing easy device interchange.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If suction is applied to the attachment system, then secure attachment is achieved, but discomfort or pain may be caused to the user

Engineering Contradiction:
Improveattachment securityVSAvoiduser discomfort
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system dynamically adjusts the suction parameter (vacuum level) based on detected physiological signals. When muscle tension or heart rate indicates discomfort, the controller reduces the suction strength. This resolves the contradiction by making the suction strength adaptive rather than fixed, maintaining secure attachment while preventing harmful discomfort levels.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system incorporates sensors that continuously monitor physiological parameters (muscle tension, heart rate) and provide feedback to the controller. This closed-loop feedback mechanism allows the system to detect when suction becomes harmful and automatically adjust to resolve the contradiction between maintaining attachment security and preventing user discomfort.

Inventive Principle:
Principle #23Feedback

2Reliability

If the attachment system becomes dislodged during use, then secure attachment is lost, but reapplication requires stopping the sexual act

Engineering Contradiction:
Improveattachment securityVSAvoidcontinuous use capability
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system incorporates self-adjusting mechanisms that automatically respond to attachment status changes. If dislodgement is detected through sensor feedback, the system can automatically reactivate or adjust suction to re-establish attachment without requiring user intervention. This resolves the contradiction by enabling continuous use while maintaining attachment security through autonomous self-correction.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If manual stimulation is used instead of mechanical devices, then intimacy is maintained, but time-consuming and tiring for both partners

Engineering Contradiction:
Improveintimacy maintenanceVSAvoidstimulation duration
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The mechanical attachment system is designed to work in conjunction with manual stimulation rather than completely replacing it. The device can be used for positioning and base stimulation while partners engage in manual activities, creating a multi-functional system that maintains intimacy through combined mechanical and manual interaction. This resolves the contradiction by reducing the time burden of manual stimulation while preserving intimate engagement.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Enables a hands-free experience, comfortable mounting, and easy replacement of prosthetic phallic devices without the use of straps or other attachment systems, enhancing user convenience and versatility.

Implementation Method 1

Suction-based attachment system for sexual stimulation

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentEP4340797B1Suction-based attachment system for sexual stimulation
Publication Date: 2026.04.29 PD PRODUCTS LLC
  • EP4340797B1 patent drawingFigure 1A~1B
  • EP4340797B1 patent drawingFigure 2A~2D
  • EP4340797B1 patent drawingFigure 3

AI summary

According to one example, a suction-based attachment system includes a body plate configured to be positioned against a pelvis of a person, and a suction docking protrusion coupled to the body plate. The body plate has a back surface configured to face the pelvis of the person, and a front surface configured to face away from the pelvis of the person. The suction docking protrusion includes a suction docking surface that is configured to operate as an attachment area for a suction cup included on a prosthetic phallic device, via an air vacuum formed in-between the suction docking surface and the suction cup included on the prosthetic phallic device.