Endoscopic Centering Sheath for Uniform Cavity Wall Ablation
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Solution Overview
Problem
Existing treatments for Type II diabetes and obesity, such as bariatric surgery, physical barriers, duodenal mucosae resurfacing devices, and laser devices, suffer from limitations like side effects, uncontrolled thermal damage, lack of real-time visibility, and non-homogeneous energy delivery, making them impractical or risky.
Innovation Solution
A medical apparatus with a longitudinal sheath and positioning element that can change configurations to center and support a treatment device, ensuring precise ablation and resurfacing of internal cavity walls, using a deformable element to maintain the treatment device in a central region of the cavity, allowing for real-time visibility and homogeneous energy delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a laser is used to ablate tissue, then precise ablation is achieved, but carbonized tissue adheres to the laser probe blocking further ablation
Solution Approach 1:
The patent extracts and separates the harmful carbonized tissue from the laser probe surface by introducing a saline solution flow that washes away the carbonized debris, preventing it from blocking further ablation and allowing continuous precise laser treatment
Solution Approach 2:
The patent introduces saline solution as an intermediary substance between the laser probe and the tissue, which serves to cool the probe, prevent carbonized tissue adhesion, and facilitate continuous ablation by washing away debris
2Productivity
If high power laser is used for ablation, then ablation speed increases, but carbonization and adhesion worsen
Solution Approach 1:
The patent maintains continuous ablation by introducing a saline solution flow that continuously removes carbonized debris and cools the probe, preventing interruptions and maintaining high ablation speed throughout the procedure
Solution Approach 2:
The patent changes the thermal parameters by introducing cooled saline solution that absorbs excess heat, preventing excessive carbonization while maintaining high power laser settings for fast ablation
3Stability of the object's composition
If laser probe is held stationary against tissue, then stable ablation is achieved, but carbonized tissue blocks the probe
Solution Approach 1:
The patent extracts the blocking carbonized tissue from the probe-tissue interface by introducing a saline solution flow that washes away debris, maintaining stable probe positioning and continuous ablation
Solution Approach 2:
The patent introduces saline solution as an intermediary that flows between the stationary probe and tissue, preventing carbonized adhesion and maintaining stable ablation conditions throughout the procedure
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
Enables reliable and precise ablation and resurfacing of gastrointestinal tissues with real-time visibility, reducing side effects and ensuring uniform treatment, thereby addressing the limitations of existing methods.
Implementation Method 1
Ablation using a laser refers to a method of removing a target substance by vaporizing or fragmenting the substance using light energy from a laser
Implementation Method 2
removing a target substance by vaporizing or fragmenting the substance using light energy from a laser
Implementation Method 3
The laser probe is supplied with saline solution for cooling
Implementation Method 4
fragmenting the substance using light energy from a laser, with or without ultrasonic vibration of the laser probe
Data Source
Figure 1A~1D
Figure 2A~2C
Figure 3A~3D
AI summary
Medical apparatus (1) for supporting and centering a treatment device (2) treating the internal walls (3) of a longitudinal cavity (4), in particular a human cavity, the apparatus (1) comprising a longitudinal sheath (5) insertable in a working channel (6) of an endoscopic device (7); and a positioning element (8) comprising a first end (9) connectable to the longitudinal sheath (5) and having a central channel (14) as well as a first guiding through-hole (12), a second end (10) configured to be movable from first end (9) and from the longitudinal sheath (5) and having a second guiding through-hole (13), and a deformable element (11) fixable to at least the second end (10); wherein in a first configuration, or retracted configuration, the second end (10) of the positioning element (8) is at a first distance (d1) from the longitudinal sheath (5), the first guiding through-hole (12) and the second guiding through-hole (13) being aligned for receiving the treatment device (2) and the deformable element (11) is completely compressed in the direction of the longitudinal sheath (5), and in a second configuration, or expanded configuration, the second end (10) of the positioning element (8) is spaced apart from the longitudinal sheath (5) at a second distance (d2), wherein the first distance (d1) is different from the second distance (d2) and the deformable element (11) is radially expanded, thereby touching, at least partially, the internal walls (3) of the cavity (4) so that the first guiding through-hole (12) and the second guiding through-hole (13) are moved away from the internal walls (3) of the cavity (4) and the treatment device (2), when inserted into the first guiding through-hole (12) and the second guiding through-hole (13), is moved towards a central region of the cavity (4) and is maintained in said position during the treatment.