Blood Collection Pen Needle Shielding for Safer Needle Loading
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional blood collection pens are complicated to use and expose the needle tip, and the process of unscrewing the needle cap to install the pen cap, and the process of unscrewing the needle cap to install the pen cap, and the process of unscrewing the needle tip, and the process of unscrewing the needle tip, and the process of exposing the needle tip, and the process of protecting the needle tip, and the process of protecting the user from accidental injury to the user from accidental injury to the user from accidental harm to the user from accidental injury to the user.
Innovation Solution
A blood collection pen with a guide sleeve, inner core, needle retraction rod, and elastic structure that prevents the needle from being accidentally exposed during installation or use, ensuring it is safely housed until ready for use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the blood collection needle is directly installed from the pen cap into the needle seat, then the use steps are simplified, but the needle tip is exposed and unprotected leading to injury risk
Solution Approach 1:
The patent employs a nested structure where the needle protecting sleeve is inserted into the pen cap, the needle mounting mechanism is integrated into the protecting sleeve, and the blood collection needle is mounted within the mechanism. This nested arrangement allows the needle to remain protected during handling while enabling direct installation into the needle seat, thus simplifying操作步骤 while preventing needle tip exposure.
Solution Approach 2:
The needle protecting sleeve acts as an intermediary component between the pen cap and the blood collection needle. It provides a protective barrier that covers the needle tip during installation and handling, eliminating the need to unscrew separate needle caps while maintaining safety. The intermediary structure enables direct needle installation without exposing the tip to users.
2Adaptability or versatility
If the needle cap is unscrewed to install the pen cap and discard the needle, then the needle can be replaced, but the needle tip is exposed during these operations causing injury risk
Solution Approach 1:
The needle protecting sleeve is nested within the pen cap structure, and the needle mounting mechanism is nested within the protecting sleeve. This nested configuration allows the needle to be replaced by simply detaching it from the mounting mechanism without unscrewing any protective caps, thereby maintaining needle adaptability while eliminating exposure risks during replacement operations.
Solution Approach 2:
The needle protecting sleeve is pre-assembled with the needle mounting mechanism before the needle is installed. This preliminary preparation ensures that the needle tip is already protected when the needle is mounted, eliminating the need for subsequent cap screwing and unscrewing operations that would expose the needle tip during replacement.
3Adaptability or versatility
If the blood collection needle is not installed in place, then installation flexibility is maintained, but the user may be harmed if the pen is loaded and launched
Solution Approach 1:
The needle mounting mechanism incorporates a positioning structure that prevents the pen from being loaded and launched unless the needle is correctly installed. This preliminary anti-action mechanism blocks the loading operation when the needle is absent or improperly installed, thereby preventing potential harm while maintaining installation flexibility through the same mechanism.
Solution Approach 2:
The needle mounting mechanism provides feedback through its positioning structure that indicates whether the needle is correctly installed. This feedback mechanism allows the system to recognize the installation state and accordingly permit or prevent the loading and launching operations, ensuring safety while preserving installation flexibility.
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 design simplifies the use steps and significantly improves the safety and convenience of blood collection by preventing needle exposure during handling and use, reducing the risk of injury.
Implementation Method 1
the inn core includes an elastic structure which is adapted for abut against an inner wall of the guide sleeve in the axial direction; and the elastic structure is adapted to abut against the needle retraction rod in a transverse direction to prevent a part of the elastic structure that abuts against the inner wall of the guide sleeve from elastically deforming or moving laterally inward
Data Source
AI summary
The present disclosure relates to a blood collection pen, including: a guide sleeve (5); an inner core (2), a front end of which is provided with a needle mounting mechanism for detachably installing a blood collection needle, and a rear end of which passes through the guide sleeve; a needle retraction rod (3) provided through the inner core in an axial direction, a front end of the needle retraction rod being adapted for passing through an inner core hole at a front end of the inner core; wherein: the inn core includes an elastic structure which is adapted for abut against an inner wall of the guide sleeve in the axial direction; and the elastic structure is adapted to abut against the needle retraction rod in a transverse direction to prevent a part of the elastic structure that abuts against the inner wall of the guide sleeve from elastically deforming or moving laterally inward in a case that the blood collection needle is not installed at the front end of the inner core.