Fluid Collection Box With Separate Perfusion and Suction Paths
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ophthalmic surgery systems face challenges in precisely controlling intraocular fluid volume and pressure, leading to potential tissue damage due to rapid pressure changes and surges during phacoemulsification surgery.
Innovation Solution
A fluid collection box with independently disposed perfusion and suction passages, utilizing a peristaltic pump for suction and a negative pressure regulating loop, equipped with sensors and elastic components to stabilize pressure and detect fluid dynamics in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If gravity-dependent perfusion is used, then the device structure is simple, but the perfusion pressure cannot be detected in real-time and is unstable
Solution Approach 1:
The patent replaces the gravity-dependent mechanical perfusion system with an electronically controlled pump system that can actively regulate and monitor perfusion pressure in real-time, eliminating the instability inherent in passive gravity-based systems
Solution Approach 2:
The patent implements a feedback mechanism through pressure sensors that continuously monitor perfusion pressure and provide real-time data to the control system, enabling dynamic adjustment to maintain stable intraocular pressure during surgery
2Device complexity
If perfusion and suction passages are integrated, then the device structure is compact, but liquid flow becomes unstable and intraocular pressure changes occur during surges
Solution Approach 1:
The patent divides the fluid management system into separate perfusion and suction passages with independent control mechanisms, allowing each passage to be optimized and controlled independently to prevent flow instability and pressure surges during cataract surgery
Solution Approach 2:
The patent implements dynamic control of the peristaltic pump to adjust suction flow rates in real-time based on surgical conditions, preventing excessive suction that could cause intraocular pressure drops or tissue damage while maintaining compact device structure
3Reliability
If peristaltic pump is used for suction, then the suction function is improved, but the pump line may twist or move axially
Solution Approach 1:
The patent introduces a guiding mechanism as an intermediary component between the peristaltic pump and the suction passage, which guides the pump line to prevent twisting and axial movement while maintaining the effectiveness of the peristaltic suction function
Solution Approach 2:
The patent uses a flexible protective sheath or housing for the pump line that allows necessary movement while constraining the line to prevent twisting and excessive axial displacement, ensuring reliable suction function without adding complex rigid guidance structures
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
Stabilizes intraocular pressure by preventing interference between passages, allowing precise control and reducing tissue damage risks through real-time pressure monitoring and regulation.
Implementation Method 1
The suction passage is a pipeline that communicates a third connection port with the waste liquid bag, and performs perfusion by a peristaltic pump
Implementation Method 2
The elastic portion is provided with a sensor to detect perfusion pressure within the circulation cavity through the generated deformation
Data Source
AI summary
The present disclosure discloses a fluid collection box for phacoemulsification surgery, including a case composed of a front plate, a body, and a rear plate. The case communicates with a waste liquid bag. The body has a perfusion passage and a suction passage that are disposed independently. The perfusion passage is a sealed circulation cavity defined by a cover and the body. The circulation cavity communicates with a first connection port and a second connection port on the body for perfusion. There is a gap between the cover and the body. Connection and disconnection of the perfusion passage is controlled by pressing the cover. The suction passage is a pipeline that communicates a third connection port with the waste liquid bag, and performs perfusion by a peristaltic pump. The suction passage further communicates with a negative pressure regulating loop, to regulate pressure within the suction passage. According to the present disclosure, the perfusion passage and the suction passage are independently disposed, so that the two do not interfere with each other and work independently. Meanwhile, it is ensured that pressure within the perfusion passage is stable, thereby reducing changes of intraocular pressure, and improving safety during use.