Forceps Base and Wire-Pulley Layout for Airtight Jaw Actuation
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Solution Overview
Problem
The air pressure inside the abdominal cavity during surgery cannot be maintained higher than atmospheric pressure due to gas leakage through the forceps device, particularly when the jaw parts are opened and closed by wire movements.
Innovation Solution
A forceps device with a base member that includes a partition part with angled grasping-portion-wire holes and a sealing member with smaller diameter holes to enhance airtightness, guided by guide pulleys to separate wires and reduce interference, and a support shaft for increased stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate components (forceps body, base, adapters, bits) are used to provide versatility, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple separate components (forceps body, base, adapters, and bits) into a single integrated forceps device assembly. The base component serves as a common platform that can accommodate different adapters and bits, merging what would otherwise be separate tools into one versatile device that reduces the number of separate components needed.
Solution Approach 2:
The base component is designed as a universal platform that can interface with multiple types of adapters and cutting bits through standardized mounting mechanisms. This multi-functional base allows the forceps device to perform various cutting and shaping operations on different rock core samples without requiring multiple specialized devices.
2Adaptability or versatility
If multiple separate components are used, then adaptability is improved, but ease of operation deteriorates due to assembly requirements
Solution Approach 1:
The adapters and bits are pre-configured to interface with the base component through standardized mounting mechanisms. The quick-change adapters are designed with pre-positioned mounting features that align with corresponding receptacles on the base, allowing operators to interchange components without complex assembly procedures or specialized tools.
Solution Approach 2:
The forceps device incorporates dynamic quick-change mechanisms that allow adapters and bits to be rapidly interchanged during operation. The mounting and dismounting mechanisms are designed to enable quick component changes without requiring the device to be disassembled or taken out of service, maintaining operational flexibility and ease of use.
3Adaptability or versatility
If multiple separate components are used, then versatility is improved, but loss of time increases due to assembly and disassembly
Solution Approach 1:
The adapters are pre-configured with standardized mounting features that align with the base component receptacles. This preliminary design of the interfacing mechanisms allows for rapid attachment and detachment without requiring complex assembly procedures, significantly reducing the time needed to interchange components during operation.
Solution Approach 2:
The quick-change adapter mechanism enables dynamic interchange of components during operation. The mounting and dismounting processes are designed to be performed rapidly without taking the forceps device out of service, minimizing operational interruptions and time loss when changing cutting bits or adapters for different rock core samples.
Data Source
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AI summary
A forceps device (10) includes a grasping part (12a, 12b), a support (14) that holds the grasping part, a first rotating shaft (16) that turnably supports the support, a base member (18) that holds the first rotating shaft, grasping-portion wires for transmitting driving forces to move the grasping part, a guide pulley (52a, 52b) for guiding one or some of the grasping-portion wires, and a support shaft (54) for rotatably supporting the guide pulley. The base member (18) includes a partition part (18g) having grasping-portion-wire holes (58, 60, 62) through which the respective grasping-portion wires pass, and a pair of arms (18a, 18b) which extend from the partition part (18g) toward the grasping part (12a, 12b) and to which respective ends of the support shaft are fixed. The guide pulley (52a, 52b) guides the one or some of the grasping-portion wires so that the first grasping-portion wire is separated from the second grasping-portion wire.