Deformable Housing Squeeze-Activated Puncture Device

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Solution Overview

Problem

There is a need for a medical puncturing device that ensures sterility before use and safe, secure disposal after use, while also being simple, inexpensive, reliable, and disposable, with consistent and controlled puncture wound production.

Innovation Solution

A medical puncturing device with a deformable housing and a skin puncturing element that moves from a retracted position to an exposed position upon radial deformation of the housing, featuring a carrier with detents for secure engagement and a drive spring for automatic actuation, ensuring the skin puncturing element is safely contained within the housing after use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a hand-held needle or blade is used for puncturing, then the device is simple and inexpensive, but it is difficult for users to operate and may not ensure sterility

Engineering Contradiction:

Improveease of useVSAvoidsterility assurance

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The device is designed to be self-activating through a squeezing mechanism that automatically deploys the puncturing element, eliminating the need for manual manipulation of sharp components while maintaining sterility through sealed housing until activation

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The puncturing element is extracted from a protected position within the housing and deployed only when needed through the squeezing action, keeping it sterile and hidden during storage and transport

Inventive Principle:

Principle #2Taking out (Extraction)

2Productivity

If the puncturing element is exposed for use, then the device can perform its function, but the user may be wounded after use

Engineering Contradiction:

Improveblood sample collectionVSAvoiduser injury risk

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The puncturing element dynamically transitions between a retracted safe position and an extended active position, controlled by the squeezing mechanism, ensuring it is only exposed when needed for the brief moment of skin penetration

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The same squeezing force that activates the puncturing element also triggers the shielding mechanism to cover the element after use, converting the activation action into a dual function of both deployment and subsequent safety protection

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Object-affected harmful factors

If the device is designed for single use with safety features, then user safety is improved, but the device complexity increases

Engineering Contradiction:

Improvedisease transmission preventionVSAvoiddevice structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The shielding mechanism is merged with the housing structure, and the squeezing activation mechanism serves dual purposes of both deploying and retracting the puncturing element, reducing overall complexity while maintaining safety features

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The entire device is designed as a disposable unit with integrated safety features, eliminating the need for complex reusable mechanisms with multiple adjustment components, thereby reducing complexity while ensuring single-use safety

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

4Force

If a spring mechanism is used for automatic puncture, then the puncturing force is sufficient, but the device complexity increases

Engineering Contradiction:

Improvepuncture forceVSAvoidmechanism complexity

Core Design Contradiction:

ForceVSDevice complexity

Solution Approach 1:

The spring mechanism is extracted and positioned within the housing, separate from the squeezing activation mechanism, allowing the housing itself to serve as part of the mechanical advantage system and reducing overall complexity

Inventive Principle:

Principle #2Taking out (Extraction)

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 device ensures sterility before use and safe disposal after use, providing consistent and controlled puncture wounds, while being simple, inexpensive, and reliable, with the deformable housing design enhancing user safety and operational efficiency.

Implementation Method 1

a drive spring for automatic actuation

Methodology Applied

Scientific EffectSpring: Spring

Implementation Method 2

upon radial deformation of the housing

Methodology Applied

Scientific EffectDeformation: Deformation

Data Source

PatentUS8449479B2Squeeze activated medical puncturing device

Publication Date: 2013.05.28 BECTON DICKINSON & CO

AI summary

The medical puncturing device (10) includes a housing (12) having a proximal end (18) and a distal end (16) and a skin puncturing assembly (14) within the housing. The skin puncturing assembly includes a movable carrier (50) and a skin puncturing element (52). The skin puncturing element is adapted to puncture the skin of a patient. The carrier is movable from a retracted position wherein a distal tip of the skin puncturing element is disposed within the housing, to a puncturing position wherein the distal tip is exposed to puncture the skin of the patient. The carrier is moved from the retracted position to the puncturing position upon radial deformation of the housing. An internal guide (42) may be provided within the housing for guiding the movement of the carrier from the retracted position to the puncturing position.