Hose Pump Stator Projection for Entanglement Reduction
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Solution Overview
Problem
Existing hose pumps used in medical applications, such as blood treatment, face challenges in design that lead to entanglement and injury risks due to the configuration of stator and rotor passages, which complicates manufacturing and assembly.
Innovation Solution
A hose pump design featuring a stator and rotor with separate passages, where the section between the passages has a projection closer to the axis of rotation, reducing contact points and allowing for a simpler, cost-effective construction that minimizes entanglement and injury risks, while maintaining efficient fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stator and rotor passages are configured in conventional hose pumps, then the pump can perform fluid transport, but entanglement and injury risks occur due to the configuration of passages
Solution Approach 1:
The pump passage is divided into two separate openings (first opening and second opening) instead of a single continuous passage. This segmentation prevents the hose from forming loops that could cause entanglement, as the hose enters through one opening and exits through another separate opening, eliminating the harmful configuration.
2Ease of manufacture
If conventional stator and rotor configurations are used, then fluid pumping function is achieved, but manufacturing and assembly become complicated
Solution Approach 1:
The stator and rotor are designed as integrated components where the stator completely or partially surrounds the rotor with a unified structure. The section between the first and second openings is formed as part of the stator, merging multiple functional elements into a single manufacturable component that simplifies both production and assembly processes.
3Object-affected harmful factors
If the section between passages is positioned at standard distance from axis of rotation, then structural balance is maintained, but entanglement risks increase
Solution Approach 1:
The section of the stator between the first and second openings is positioned at a smaller distance from the axis of rotation compared to other sections. This local modification creates a specific geometric configuration that prevents hose entanglement in the critical area where the hose passes through, while other sections maintain standard positioning for overall structural integrity.
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 enhances safety by reducing entanglement and injury risks, simplifies the manufacturing process, and maintains efficient fluid handling, making it suitable for applications like hemodialysis and blood treatment.
Implementation Method 1
The present invention relates to a peristaltic pump according to claim 1
Data Source
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AI summary
The invention relates to a hose pump for receiving at least one section of a hose, comprising at least one stator (3) and at least one rotor (5) which is mounted in the stator (3) so as to rotate about a rotational axis (26), wherein the stator (3), at least in sections of the circumference of the rotor (5), surrounds or delimits the rotor (5) leaving open a first passage (13) for inserting the hose in the hose pump (1) and a second passage (15), which is located separately from the first, for leading the hose out of the hose pump (1), and wherein a section (17) of the hose pump (1) and/or of the stator (3) formed between the first passage (13) and the second passage (15) has a region or projection (19) in a region of the second passage (15) for leading out the section of the hose, said projection having a lesser distance to the rotational axis (26) of the rotor (5) than the other sections of the stator (3). The invention further relates to a blood treatment device (24).