Heart Failure Syringe Locking Mechanism for Reliable Balloon Control
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Solution Overview
Problem
Existing heart failure treatment systems face challenges in reliably connecting the heart failure treatment host with a syringe, leading to inefficient balloon filling and release, which affects the effectiveness of treating conditions like acute heart failure.
Innovation Solution
A heart failure treatment host and instrument design that includes an end cap, rotating head, and push-pull rod with specific notches and grooves to ensure secure locking and unlocking of the syringe, allowing for reliable interaction between the push-pull rod and piston rod, facilitating accurate driving of the syringe's piston.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple connection structure is used between the heart failure treatment host and syringe, then the device complexity is reduced, but the connection reliability deteriorates
Solution Approach 1:
The syringe is nested within the heart failure treatment host through a rotating insertion mechanism. The syringe rotates around the push-pull rod and inserts into the host's receiving cavity, where it is locked by the end cap. This nesting approach achieves reliable connection without requiring complex external fastening structures.
Solution Approach 2:
The connection mechanism incorporates dynamic elements including rotation for insertion, spring-loaded locking, and rotatable disconnecting. The syringe can rotate into the locked position and be disconnected by rotating in the opposite direction. This dynamic connection provides both reliability during treatment and ease of replacement.
2Device complexity
If manual balloon filling and release is used, then the device complexity is reduced, but the productivity deteriorates
Solution Approach 1:
The system incorporates an automated control mechanism that can independently manage balloon inflation and deflation cycles. The controller automatically actuates the push-pull rod to fill and release the balloon according to preset parameters, eliminating the need for manual syringe operation and significantly improving treatment throughput.
Solution Approach 2:
The controller is pre-programmed with treatment protocols that automatically sequence the balloon filling and release operations. Parameters such as inflation time, pressure, and deflation rate are predetermined, allowing the system to execute multiple treatment cycles without manual intervention, thereby increasing productivity.
3Reliability
If the syringe is firmly locked during operation, then the connection reliability is improved, but the ease of operation deteriorates
Solution Approach 1:
The locking mechanism is designed to be dynamically reversible. The syringe rotates into a locked position during installation and is secured by spring-loaded latches. For removal, the user simply rotates the syringe in the opposite direction, which automatically disengages the latches. This dynamic design maintains firm locking during operation while enabling easy installation and removal.
Solution Approach 2:
The connection mechanism operates in periodic cycles of locking and unlocking. During normal operation, the syringe remains firmly locked. When treatment is complete, a simple rotational action initiates the unlocking cycle, allowing rapid removal. This periodic locking/unlocking pattern maintains both reliability and operational ease.
Data Source
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AI summary
The present disclosure provides a heart failure treatment host and a heart failure treatment instrument. The heart failure treatment host is used for being connected with the syringe in an assembled mode, the syringe comprises a needle cylinder and a piston rod located in the needle cylinder, the tail end of the piston rod is provided with at least one drag hook, the heart failure treatment host comprises an end cover used for limiting the syringe to an unlocking position and a locking position, and the locking position is reached when the syringe rotates around the axis of the syringe from the unlocking position; the rotating head is used for axially limiting the needle cylinder and can be driven by the needle cylinder to rotate; the push-pull rod is used for driving the piston rod to advance and retreat along the axis, a clamping groove is formed in the peripheral side of the front end of the push-pull rod, and the push-pull rod is provided with at least one avoiding notch extending from the front end face to be communicated with the clamping groove. The at least one drag hook is located in the clamping groove and is opposite to the at least one avoiding notch in a one-to-one correspondence mode, and under the condition that the injector is located at the locking position, the at least one drag hook is located in the clamping groove and is opposite to the at least one avoiding notch in an avoiding mode.