Wound Suction Device Syncing Negative Pressure to Pulse Beat
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Solution Overview
Problem
Existing medical devices for wound healing, such as intermittent vacuum techniques, primarily focus on removing wound exudates but fail to address the underlying blood flow situation, potentially stressing the wound during its sensitive self-healing phase and not promoting natural blood circulation effectively, especially in areas with impaired circulation.
Innovation Solution
A medical device that generates negative pressure pulses synchronized with the patient's pulse beat to stimulate blood circulation, using a suction attachment that covers the wound and an alternating pressure pump controlled by a heart rate monitor to create a favorable climate for tissue healing, ensuring that negative pressure coincides with each pulse beat and supports natural fluid evacuation between pulses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If intermittent vacuum techniques are used to remove wound exudates, then wound fluid evacuation is improved, but natural blood circulation is not promoted and the wound is stressed during its sensitive self-healing phase
Solution Approach 1:
The patent applies periodic action by synchronizing the vacuum pump's operation with the patient's natural heartbeat cycle. The vacuum is applied during diastole (when the heart relaxes and blood flows into the heart) and released during systole (when the heart contracts and pumps blood out). This periodic synchronization allows effective wound fluid evacuation while supporting natural blood circulation patterns, resolving the contradiction between exudate removal and blood circulation support
Solution Approach 2:
The patent implements feedback by using a heart rate monitor to detect the patient's pulse and automatically adjusting the vacuum pump's operation accordingly. The control unit receives real-time heart rate data and synchronizes the vacuum application with the detected heartbeat cycle, ensuring that the vacuum is applied at the optimal moment in the cardiac cycle. This feedback mechanism allows the system to adapt to the patient's natural physiology, promoting blood circulation while removing exudates
2Loss of substance
If negative pressure is applied continuously to suck off wound exudates, then wound fluid evacuation is improved, but the wound climate and natural blood circulation are disregarded and the wound is stressed
Solution Approach 1:
The patent transforms continuous negative pressure application into periodic action by synchronizing vacuum application with the patient's heartbeat cycle. The vacuum is applied intermittently during diastole and released during systole, allowing the wound to experience natural pressure variations that support blood circulation. This periodic approach maintains effective exudate removal while reducing wound stress by aligning with the body's natural physiological rhythms
Solution Approach 2:
The patent applies self-service by utilizing the patient's own heartbeat as the control signal for vacuum application. The heart rate monitor detects the patient's pulse, and the control unit uses this information to automatically regulate the vacuum pump, creating a self-regulating system that adapts to the patient's natural physiology. This eliminates the need for external control and allows the wound healing process to be supported by the body's own rhythmic patterns
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 approach enhances blood circulation and wound healing by synchronizing negative pressure with the patient's pulse, promoting a natural healing environment and effectively managing wound fluid evacuation, particularly beneficial for tissues with circulatory disorders.
Implementation Method 1
negative pressure is generated at the moment when the blood flows into the wound area due to the pulse beat
Implementation Method 2
The measured pulse is integrated into the wound healing process
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a medical device for improving the wound healing process of a patient (30) with a suction attachment (1) for a wound, which, when applied, creates a substantially airtight seal (2) with a skin area of the patient (30) and is connected to the suction attachment (1) via a pressure-conducting connection (3) by a controllable pump (4), which generates an internal pressure signal (25) acting on the wound, independent of air pressure, with periodically occurring negative pressure pulses (26) in the suction attachment (1) and is connected to a pulse meter (8) measuring a pulse (21) of the patient (30) and to a control unit (11) connected to the pulse meter (8) and the pump (4), which evaluates the pulse (21) of the measured pulse and generates a control signal (23) for controlling the pump (4) in such a way as tothat pulse beats (28) of a pulse in the wound area (27) coincide temporally with the negative pressure pulses (26) of the internal pressure signal (25).