Endoscopic Forceps Jaw Latch Plate Mechanism for Simpler Locking
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Solution Overview
Problem
Current latching mechanisms for endoscopic cutting forceps are mechanically complex and expensive to manufacture, necessitating a simpler and more cost-effective solution for both endoscopic cutting forceps and other lever-actuated devices.
Innovation Solution
A lever latching system comprising a housing, a lever with a latch pin, and a latch plate with a labyrinth, where the latch pin moves in an arc or is offset from the pivot point, allowing for a mechanically simple and inexpensive latching mechanism that can be used in endoscopic cutting forceps and other surgical instruments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current latching mechanisms are used for endoscopic cutting forceps, then the jaws can be locked in closed position, but the mechanism becomes mechanically complex and expensive to manufacture
Solution Approach 1:
The latching mechanism is divided into separate functional components: a lever with an arcuate latch pin, a stationary latch plate with a labyrinthine receiving path, and a release button. This segmentation allows each component to be simple in shape while collectively providing reliable latching functionality, reducing overall manufacturing complexity and cost.
2Reliability
If current latching mechanisms are used for endoscopic cutting forceps, then the jaws can be locked in closed position, but the manufacturing cost increases
Solution Approach 1:
The latching mechanism uses simple, easily manufacturable components that can be produced at low cost. The latch pin, latch plate, and release button are designed as basic mechanical elements that can be mass-produced through standard manufacturing processes, making the overall system more cost-effective while maintaining reliable latching function.
3Device complexity
If a latch pin moves in an arc is used, then the latching mechanism becomes simpler, but the precision of latching may be affected
Solution Approach 1:
The latch pin is designed with an arcuate (curved) path that engages with the labyrinthine receiving path in the latch plate. This curved geometry provides inherent mechanical guidance and tolerance compensation, ensuring precise latching engagement while maintaining simple component shapes that are easy to manufacture. The arcuate motion naturally ensures proper alignment and engagement without requiring high-precision manufacturing.
Data Source
AI summary
A lever latching system comprising: a housing; a lever having a latch pin fixedly mounted to the lever, the lever being movably mounted to the housing so that the latch pin moves in an arc; and a latch plate movably mounted to the housing for linear movement with respect to the housing, the latch plate comprising a labyrinth for receiving the latch pin.