Urinary Catheter Handle Cavity for Discreet Bag Integration

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current urinary catheter kits with urine collection bags are bulkier than desired, difficult to use, and require additional retention elements, making them expensive and complicated to manufacture, while also posing challenges for users with decreased finger dexterity.

Innovation Solution

A urinary catheter kit design featuring a handle with a cavity that houses a compacted urine collection bag, eliminating the need for additional retention elements and allowing the kit to be more discreet and easier to use, with a larger handle for improved grip and a backflow prohibiting element to prevent urine from flowing back into the catheter.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the urine collection bag is provided inside a package alongside the urinary catheter, then the kit can be compact, but additional retention elements (clips or rubber bands) are required to retain the bag in a compact storage configuration, which increases weight, size, cost, and manufacturing complexity

Engineering Contradiction:

Improvekit sizeVSAvoidretention elements

Core Design Contradiction:

Volume of moving objectVSDevice complexity

Solution Approach 1:

The handle is designed to integrate both the gripping function and the urine collection bag storage function. The cavity within the handle provides a built-in compartment that houses the compacted urine collection bag, eliminating the need for separate retention elements. This merging of functions reduces the number of components, simplifies the overall device structure, and decreases both weight and manufacturing complexity while maintaining a compact kit size

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The handle serves multiple functions: it provides a gripping surface for the user, contains a cavity for storing the compacted urine collection bag, and acts as part of the fluid communication pathway. This multi-functionality allows the single component to replace what would traditionally require multiple separate parts (handle + retention elements + storage structure), thereby reducing device complexity and cost

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Quantity of substance

If the urine collection bag is made large enough to hold sufficient urine, then the bag capacity is adequate, but the bag becomes bulky and difficult to handle and use discreetly

Engineering Contradiction:

Improveurine capacityVSAvoidhandling ease

Core Design Contradiction:

Quantity of substanceVSEase of operation

Solution Approach 1:

The urine collection bag is nested within the cavity of the handle when in its compacted storage state. This nesting arrangement allows the bag to be contained within the handle structure, making the overall kit more compact and easier to handle discreetly. The bag maintains its full capacity when extended for use, but during storage and transport, it occupies minimal space within the handle's cavity

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The urine collection bag transitions between two states: a compacted state for storage within the handle cavity, and an extended state for actual urine collection. This dynamic transformation allows the same bag to satisfy both requirements - adequate capacity when needed and compact size for handling. The flexible material of the bag enables this state change while maintaining structural integrity

Inventive Principle:

Principle #15Dynamics

3Volume of moving object

If retention elements are added to retain the urine collection bag in a compact configuration, then the bag can be stored compactly, but the kit becomes more expensive and complicated to manufacture

Engineering Contradiction:

Improvestorage compactnessVSAvoidmanufacturing cost

Core Design Contradiction:

Volume of moving objectVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The retention function is extracted from separate components (clips or rubber bands) and integrated into the handle structure itself. The handle's cavity design inherently provides the retention mechanism through its geometry, eliminating the need for additional retention elements. This extraction of the retention function from separate parts simplifies manufacturing and reduces cost

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS20250345575A1Urinary catheter kit with urine collection bag

Publication Date: 2025.11.13 WELLSPECT AB

AI summary

A urinary catheter kit and a method for manufacturing the urinary catheter kit are discussed and shown. The urinary catheter kit comprises a urinary catheter with a catheter shaft extending along an axial direction, at least one eyelet arranged at a proximal insertion end, and a handle arranged at an opposite distal end of the catheter shaft, wherein said handle defines a cavity. The catheter kit further comprises a urine collection bag made of a flexible material. The urine collection bag has a collection bag opening which is attached to the handle so as to enable the urine collection bag to communicate with a central lumen of the catheter shaft via said handle. Wherein the urine collection bag, in a storage state, is compacted and at least partially housed inside the cavity of the handle.