Magnetic Syringe Holder With Disposable Foam Cap Block

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Solution Overview

Problem

Existing syringe holders, such as those made of flexible foam, are unstable on surgical drapes, leave adhesive residue, and expose instruments to accidental strikes, necessitating improved stability and safety during medical procedures.

Innovation Solution

A rigid base block with elongated prongs and a pierceable receiving block, magnetically attached to a surface, securely holds syringes, allowing easy access and retraction of the needle with a single hand, and can be reused or discarded after a single use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If flexible foam holders with double-sided tape are used to hold syringes, then low cost and ease of manufacture are improved, but stability on surgical drapes deteriorates

Engineering Contradiction:

Improveease of manufactureVSAvoidstability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The holder is divided into two functional blocks: a base block for mounting and a receiving block for holding the syringe. This segmentation allows each block to be optimized independently - the base block for stable mounting and the receiving block for secure syringe retention - thereby resolving the contradiction between ease of manufacture and stability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The holder uses composite construction with a rigid base block (sterilizable, stable material) and a soft resilient receiving block (foam or elastomer). This composite approach combines the stability and durability of rigid materials with the grasping capability of soft materials, achieving both stability and ease of manufacture.

Inventive Principle:

Principle #40Composite materials

2Ease of manufacture

If adhesive tape is used to mount the holder on surfaces, then ease of manufacture is improved, but cleanliness and residue-free operation deteriorate

Engineering Contradiction:

Improveease of manufactureVSAvoidadhesive residue

Core Design Contradiction:

Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The adhesive mounting system is replaced with a mechanical mounting system using magnets. The base block contains magnets that attract to ferromagnetic surfaces or magnetic mounting blocks, providing secure mounting without adhesive residue. This substitution maintains ease of manufacture while eliminating the harmful adhesive residue effect.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If instruments protrude vertically from holders, then ease of access is improved, but safety from accidental strikes deteriorates

Engineering Contradiction:

Improveease of accessVSAvoidaccidental strikes

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The syringe holding orientation is changed from vertical protrusion to horizontal positioning within the receiving block. The syringe lies horizontally with the needle tip oriented laterally, removing it from the vertical path where accidental strikes occur. This dimensional change maintains ease of access while eliminating the safety hazard of vertical protrusion.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Productivity

If the holder is designed for reuse, then productivity is improved, but sterilization complexity increases

Engineering Contradiction:

ImproveproductivityVSAvoidsterilization complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The holder is segmented into a reusable base block and a disposable receiving block. The base block is designed for sterilization and reuse, while the receiving block can be discarded after single use. This segmentation allows the system to achieve high productivity through reuse of the base block while simplifying sterilization requirements by making the receiving block disposable.

Inventive Principle:

Principle #1Segmentation

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

Provides stable, residue-free, and safe storage for syringes, reducing the risk of accidental dislodgement and injury, while maintaining sterility and ease of use.

Implementation Method 1

The mounting block 30 allows mounting of the base block 10 to the placement surface 200 in the manner shown in FIGS. 3a-3b, wherein the mounting block 30 is situated on the opposite side of the placement surface 200 from the base block 10 such that the base and mounting blocks 10 and 30 are magnetically bound to each other about the placement surface 200.

Methodology Applied

Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentUS12551632B2Holder for syringes and other medical instruments

Publication Date: 2026.02.17 KODA IDEAWORKS LLC

AI summary

A medical instrument holder includes a base block configured to removably mount to a placement surface, and has prongs extending therefrom. A receiving block formed of soft and resiliently flexible material, such as an elastomeric foam, may be impaled on the prongs. A medical instrument (such as a syringe or scalpel) may be inserted into the receiving block, thereby effectively removably holding the medical instrument with respect to the placement surface. The receiving block may be discarded after use, and replaced with another receiving block for subsequent use. The holder is particularly useful for receiving the cap of a hypodermic syringe within the receiving block, allowing the syringe to be held in a ready-to-use location, and allowing one-handed removal of the syringe from the cap grasped by the receiving block.