Peristaltic Pump Tube Attachment Mechanism
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Solution Overview
Problem
The existing blood purification apparatuses require cumbersome processes for attaching and detaching pump tubes from peristaltic pumps, involving insertion and rotation of pump tubes into stators, which is labor-intensive and inefficient.
Innovation Solution
A blood purification apparatus with a peristaltic pump that includes a stator and a rotor, an anchor member to secure an attaching member with pump tubes, and a displacing portion to move the attaching member between set and unset positions, facilitating easy attachment and detachment of pump tubes by controlling the rotor's rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pump tubes are attached to peristaltic pumps by inserting them into stators while rotating rotors, then the pump tubes can be securely attached, but the attaching work becomes troublesome and time-consuming
Solution Approach 1:
The pump tube is pre-inserted into the stator at an initial position before rotor rotation occurs. This preliminary positioning allows the tube to be secured through subsequent rotational motion rather than requiring complex manual insertion during operation, thereby reducing attaching work while maintaining secure attachment.
Solution Approach 2:
The attachment mechanism utilizes rotational motion of the rotor to dynamically secure the pump tube to the stator. Instead of static insertion, the rotating rotor guides and locks the tube into place through its motion, making the attachment process simpler and faster while ensuring reliable fixation.
2Reliability
If pump tubes are detached from peristaltic pumps by removing them from stators while rotating rotors, then the pump tubes can be completely removed, but the detaching work becomes troublesome and time-consuming
Solution Approach 1:
The rotor is rotated to a predetermined position that facilitates easy removal of the pump tube from the stator. This preliminary positioning of the rotor creates optimal conditions for tube extraction, allowing complete removal without requiring complex manual manipulation during the detaching process.
Solution Approach 2:
The detaching process utilizes the rotational motion of the rotor to dynamically facilitate tube removal. By rotating the rotor to a specific phase, the mechanical interaction between rotor and stator is optimized to allow smooth extraction of the pump tube, reducing detaching work while ensuring complete separation.
3Reliability
If multiple pump tubes are attached individually to multiple peristaltic pumps, then each pump tube can be securely attached, but the overall process becomes labor-intensive and inefficient
Solution Approach 1:
Multiple pump tubes are attached to multiple peristaltic pumps simultaneously through a combined attachment process. The system allows parallel attachment of multiple tubes during rotor rotation, merging what would be separate individual operations into a single efficient process, thereby increasing productivity while maintaining secure attachment of each tube.
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 solution significantly simplifies the process of attaching and detaching pump tubes, reducing labor hours and increasing efficiency, while also allowing for simultaneous loading or unloading of multiple pump tubes, further streamlining operations.
Implementation Method 1
a rotor including a roller and a guide portion, the roller delivering liquid by squeezing the pump tube attached to the stator
Data Source
Figure 1
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AI summary
The present invention provides a blood purification apparatus including the following: a peristaltic pump that includes a stator to which a pump tube including a first portion and a second portion is detachably attached, and a rotor including a roller and a guide portion, the roller delivering liquid by squeezing the pump tube attached to the stator, the guide portion retaining the pump tube at an appropriate position where the pump tube is squeezable with the roller, the rotor being rotatable about a predetermined axis; an anchor member that anchors an attaching member to which the pump tube is attached; and a displacing portion that displaces the attaching member between a set position and an unset position by moving the anchor member with the attaching member being anchored by the anchor member. An attachable state in which the first portion of the pump tube rests at the appropriate position is established when the anchor member is moved from the unset position to the set position with the guide portion of the peristaltic pump being stopped in a specific phase. Loading in which the guide portion draws the pump tube into the stator such that the first portion and the second portion of the pump tube rest at the appropriate position is executed when the peristaltic pump is activated in the attachable state such that the rotor is rotated by a predetermined angle.