Coagulating Cutter Ultrasonic Probe Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional coagulating cutters require cumbersome operations for simultaneous coagulation and incision of living body tissues, such as blood vessels, due to separate contact and non-contact portions, which complicates the treatment process.
Innovation Solution
The coagulating cutter design incorporates a grasping section and a vibration transmitting member with a contact portion for incising and a non-contact portion for coagulating, allowing simultaneous coagulation and incision by adjusting the grasping force and ultrasonic wave transmission, enabling efficient treatment without shifting the contact portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate contact and non-contact portions are used for incision and coagulation, then coagulation and incision can be performed, but the treatment process becomes cumbersome and complex
Solution Approach 1:
The patent combines separate contact and non-contact portions into a single integrated treating section. The treating section includes both a contact portion for incision and a non-contact portion for coagulation, allowing both functions to be performed simultaneously at different locations along the ultrasonic probe, thereby simplifying the treatment process while maintaining effectiveness
Solution Approach 2:
The treating section is segmented into distinct functional zones along the ultrasonic probe - a contact portion for incision and a non-contact portion for coagulation. This segmentation allows different treatment modes to be performed simultaneously at different locations without requiring separate devices or complex switching mechanisms
2Productivity
If the grasping section applies large force for incision, then incision performance improves, but coagulation performance deteriorates due to insufficient force
Solution Approach 1:
The patent applies local quality by creating different force conditions at different locations along the ultrasonic probe. The contact portion generates large frictional force for effective incision, while the non-contact portion generates smaller frictional force suitable for coagulation. This spatial variation in force characteristics allows both incision and coagulation to perform optimally at their respective locations
3Reliability
If conventional separate operations are used for coagulation and incision, then each function can be performed, but treatment time increases
Solution Approach 1:
The patent enables continuous simultaneous action by having both contact and non-contact portions of the treating section active at the same time during a single grasping operation. The ultrasonic vibration is transmitted continuously along the probe, generating frictional heat at both the contact portion (for incision) and non-contact portion (for coagulation) simultaneously, thereby completing both treatment functions in one continuous action rather than requiring separate sequential operations
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 design allows for efficient and simultaneous coagulation and incision of living body tissues, reducing treatment time and complexity by providing a large grasping force for incision and a small force for coagulation, effectively managing blood vessel treatment.
Implementation Method 1
an ultrasonic transducer for generating ultrasonic vibrations being disposed at this operating unit
Implementation Method 2
coagulating the living body tissue by actions of frictional heat from mechanical vibrations
Data Source
AI summary
A coagulating cutter according to the present invention comprises: a transmitting member for transmitting energy, for treating living body tissue, to the living body tissue; an outer sheath through which the transmitting member is passed; and a grasping section supported at the tip end portion of the outer sheath so as to be capable of turning with respect to the transmitting member, which allows the living body tissue to be grasped against the transmitting member. With such an arrangement, upon turning the grasping section toward the transmitting member to be in a closed state, the faces of the transmitting member and the grasping section, which face each other, provide a contact portion, where the transmitting member and the grasping section are in contact with each other over a predetermined length, for incising the living body tissue grasped between the transmitting member and the grasping section, and a non-contact portion, where the transmitting member and the grasping section are provided with a predetermined interval on both sides of the axis extending in the direction of the predetermined length of the contact portion so as not to be in contact with each other, for coagulating the living body tissue.