Reinforced Force Torque Transmission Hose for Microsurgical Instruments
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Microsurgical instruments face limitations in achieving high actuating forces and precise force feedback due to the elastic deformations of traditional force and torque transmission hoses, which restricts the ability to handle thicker tissue and regulate current density effectively in electrosurgical procedures.
Innovation Solution
A microsurgical instrument with a reinforced force and torque transmission hose, featuring a tensile element running along its length to increase tensile rigidity, allowing for higher actuating forces and improved force feedback, while maintaining compatibility with existing designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a traditional force and torque transmission hose is used, then the instrument remains flexible and easy to operate, but the maximum actuating forces are limited due to elastic deformations
Solution Approach 1:
The force and torque transmission hose is constructed as a composite structure combining a flexible hose material with embedded tension elements (wires or cables) running longitudinally. This composite design provides tensile reinforcement that resists elastic deformations while preserving the flexible bending capability of the hose, enabling higher actuating forces to be transmitted to the working insert.
2Ease of operation
If a traditional force and torque transmission hose is used, then the instrument structure remains simple, but force feedback is insufficient due to insufficient rigidity
Solution Approach 1:
The embedded tension elements within the hose create a composite structure that increases longitudinal rigidity. This enhanced rigidity improves force feedback by reducing energy loss to elastic deformations, allowing the operator to better感知 the forces at the working insert while maintaining the flexible, easy-to-operate characteristics of the hose.
3Force
If a reinforced force and torque transmission hose is used, then higher actuating forces and improved force feedback are achieved, but the device complexity increases
Solution Approach 1:
The tension elements serve multiple functions simultaneously: they reinforce the hose against elastic deformations, transmit tensile forces, and improve force feedback. This multi-functionality allows the reinforced hose structure to achieve higher actuating forces without proportionally increasing device complexity, as a single structural modification addresses multiple performance requirements.
4Measurement precision
If pressure-based current density regulation is used, then coagulation function is achieved, but precise current density control is limited due to insufficient force feedback
Solution Approach 1:
The reinforced hose with improved rigidity provides better force feedback to the operator, enabling more precise control of the working insert's position and contact pressure. This enhanced feedback loop allows for more accurate regulation of current density during coagulation, as the operator can better感知 and control the forces applied to the tissue.
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
The reinforced hose enables increased actuating forces and precise control over tissue manipulation, enhancing the ability to handle thicker tissues and regulate current density, thereby improving the overall performance and usability of microsurgical instruments.
Implementation Method 1
reinforced with at least one tension element running in the longitudinal direction of the force and torque transmission hose
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention discloses a working insert (10) for a microsurgical instrument, comprising a proximal coupling section (102) that can be coupled to a handle. A hollow shaft (1) extends from the coupling section (102) to a distal tool end (101), on which a mouth-shaped working device (2) with pivotable jaws (21, 22) is arranged, rotatably mounted about the longitudinal axis of the shaft (1). Inside the shaft (1), a force and torque transmission hose (3) runs from the coupling section (102) to the distal tool end (101), which is operatively connected to the working device (2). The force and torque transmission hose (3) is stiffened in at least one section located between the coupling section (102) and the distal end of the tool (101) by at least one tension element (31) extending in the longitudinal direction of the force and torque transmission hose (3).Furthermore, a microsurgical instrument and the force and torque transmission hose (3) itself are revealed.