Medical Dilation Device with Expandable Plates

The device divides the expansion function into discrete segments through multiple expandable plates (first plate, second plate, third plate, fourth plate) that can be independently controlled. Each plate acts as an independent expansion unit, allowing precise control over the overall expansion diameter without requiring multiple complete balloon devices.

The device transitions from a static balloon structure to a dynamic expandable structure where plates can be selectively expanded and collapsed. The mechanical expansion mechanism allows real-time adjustment of plate positions and expansion degrees, enabling a single device to adapt to various vessel sizes dynamically.

The device extracts the inflatable balloon component entirely and replaces it with a mechanical expansion system using rigid plates and connection struts. This eliminates the need for fluid inflation, dramatically reducing inflation time and removing the constraint of large fluid volume requirements while maintaining effective dilation capability.

The device replaces the pneumatic/hydraulic balloon inflation system with a direct mechanical expansion system. The threaded stem and connection struts provide immediate mechanical force application to the plates, enabling rapid expansion without the time-consuming fluid filling and pressure buildup required by traditional balloon catheters.

The device applies local quality by concentrating expansion force at specific points through the plate structures rather than uniform circumferential expansion. The plates can be positioned and expanded to target specific calcified lesions, delivering focused force exactly where needed while minimizing unnecessary force application to other vessel wall areas, thereby reducing overall damage risk.

The device enables partial action by selectively expanding only the necessary portion of the vessel wall required to address the calcified lesion. The independent plate control allows the operator to expand just enough to achieve the desired dilation without excessive force that could cause vessel wall damage, contrasting with traditional balloons that must expand uniformly throughout.

The device extracts and eliminates the complex scoring wire structure entirely, replacing it with simpler rigid plates that inherently provide the necessary force concentration. The plates' geometric shapes and positions naturally create focused force application points on calcified lesions without requiring additional scoring wires or complex internal structures.

Instead of adding complex scoring features to a balloon structure, the device inverts the approach by using simple rigid plates whose geometric configuration and mechanical expansion inherently provide the focused force effect. The solution goes from complex-adding to simple-removing, achieving the same functional outcome with greater structural simplicity.