Vacuum Container Filter Axial Tension Sealing
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Solution Overview
Problem
The existing technologies for negative pressure wound treatment devices face challenges in ensuring a secure and economical assembly of filters, which is crucial for maintaining a reliable seal and efficient fluid collection, especially when dealing with dimensional tolerances and the need for a large active filter surface.
Innovation Solution
The filter is held under axial tension between the two half-shell parts of the container, with a sealing element that deforms to secure the filter in place, ensuring a tight seal and allowing for easy installation. The filter can be designed with ribs for increased surface area and made of rigid materials like plastic or ceramic, and may include odor-absorbing substances to prevent nuisance odors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter is held under axial tension between half-shell parts with a deforming sealing element, then the seal reliability and compensation for dimensional tolerances is improved, but the device complexity increases
Solution Approach 1:
The sealing element is designed to be elastically deformable, allowing it to dynamically adapt to dimensional variations in the filter and half-shell parts. The axial tension applied during assembly causes the sealing element to deform and conform to the actual dimensions, ensuring reliable sealing despite manufacturing tolerances.
Solution Approach 2:
The sealing element's physical state is changed from rigid to elastically deformable, allowing it to change its dimensional parameters under axial load. This parameter change enables the sealing element to compensate for dimensional variations in other components while maintaining seal integrity.
2Ease of operation
If the filter is installed between half-shell parts before assembly, then the ease of installation is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The filter is pre-positioned between the half-shell parts before final assembly, allowing installers to easily place the filter in the correct location. The sealing element's elasticity compensates for any positional variations, ensuring proper sealing without requiring high manufacturing precision.
3Manufacturing precision
If the filter is held under axial tension with a deforming sealing element, then the compensation for dimensional tolerances is improved, but the force required for assembly increases
Solution Approach 1:
The sealing element is designed as a flexible, elastically deformable component that can be compressed or stretched within reasonable limits. This flexibility allows the sealing element to accommodate dimensional tolerances in the filter and half-shell parts while requiring only moderate axial assembly forces that are safe for all components.
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
This configuration provides a secure, reliable, and easy-to-install filter system that maintains a tight seal and compensates for dimensional tolerances, ensuring effective fluid collection and odor control during negative pressure wound treatment.
Implementation Method 1
the axial tension being formed by joining the half-shell parts together and the associated deformation of the sealing element through the filter
Implementation Method 2
The odor absorbing substance can also be present as a coating
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
The invention relates to a liquid-accommodating container (8) for a device (2) for providing vacuum for medical applications, in particular for the vacuum treatment of wounds on a human or animal body, which device can be worn on the body of a user and additionally can be operated in a stationary manner, wherein the device (2) comprises a first housing part (4), which has a vacuum-generating apparatus, and the container (8) for accommodating bodily fluids, in particular wound secretions sucked out of a wound, in an interior of the container, which container can be discarded after use, wherein the container (8) can be fastened to and detached from the first housing part (4) of the device (2) and, in the fastened state, vacuum can be applied to the interior of the container (8) by the vacuum-generating apparatus, and wherein a connection (10) for a suction line leading to the body is provided on the container (8), such that vacuum communication between the vacuum-generating apparatus, the container (8), and the suction line leading to the body can be established, wherein the container (8) comprises two half-shell parts (20, 22), which are permanently joined to each other and bound the interior of the container in the joined state, wherein a region for accommodating a filter (100) is also formed in the interior of the container (8); according to the invention, the filter (100) lies against an inner region (106) of the half-shell part (22) facing away from the first housing part (4) on one side and against a sealing element (54) on the other side under axial stress in an axial direction (102) extending approximately perpendicularly to a dividing plane (104) of the half-shell parts (20, 22), which sealing element (54) is attached to the half-shell part (20) facing the first housing part (4), wherein the axial stress is formed by the joining of the half-shell parts (20, 22) and associated deformation of the sealing element (54) by the filter (100).