Single-Button Puncture Instrument with Depth-Controlled Locking
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Solution Overview
Problem
Conventional puncture instruments with two manipulation buttons are difficult to use, especially for those unaccustomed, as the operation strokes for puncture and disposal are distinct, and the mounting operation requires both hands, making the series of puncture-related operations inconvenient.
Innovation Solution
A puncture instrument with a single manipulation button that performs mounting, puncture, and disposal operations by utilizing a locking member that switches between puncture and disposal modes, and a puncture needle cartridge with a breakaway part that is rotated to expose the needle, allowing for single-handed operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two manipulation buttons are provided for puncture and disposal operations, then the operations can be performed with distinct control mechanisms, but the device complexity increases and ease of operation deteriorates due to user confusion
Solution Approach 1:
The patent combines the puncture operation button and disposal operation button into a single manipulation button. The button is designed with a pressing portion that can perform both functions: pressing to a first depth performs the puncture operation, while pressing to a second depth (deeper than the first) performs the disposal operation. This merging eliminates the need for two separate buttons and reduces user confusion about which button to press for each operation.
Solution Approach 2:
The manipulation button is designed with dynamic operational characteristics where the same button performs different functions based on the depth of pressing. The button includes a pressing portion that can be pressed to different depths, with the disposal operation requiring a deeper press than the puncture operation. This dynamic design allows one button to replace two while maintaining clear distinction between operations through tactile feedback and required pressing depth.
2Reliability
If two manipulation buttons are provided for puncture and disposal operations, then the operations can be controlled separately, but the device complexity increases
Solution Approach 1:
The patent merges the functionality of two separate manipulation buttons into a single manipulation button with multiple operational depths. The pressing portion is configured to perform the puncture operation when pressed to a first depth and the disposal operation when pressed to a second depth. This structural merging reduces the number of components and simplifies the overall device complexity while maintaining reliable operational control.
3Reliability
If the mounting operation requires both hands, then the puncture needle cartridge can be securely mounted, but the ease of operation deteriorates
Solution Approach 1:
The puncture needle cartridge is designed with a mounting structure that includes a cartridge body with a front end, rear end, and side surface. The cartridge can be pre-positioned and then easily attached to the injection rod by pushing the front end of the cartridge body against the front end of the injection rod. This preliminary positioning and simplified attachment mechanism reduces the mounting operation to a single-handed action while maintaining secure mounting.
4Ease of operation
If a single manipulation button is used for both puncture and disposal operations, then the ease of operation improves, but the device complexity increases due to the locking mechanism
Solution Approach 1:
The patent integrates the locking mechanism directly into the manipulation button structure. The manipulation button includes a pressing portion and a locking portion that works together to maintain the lancet holder in a locked state. When the button is pressed to the second depth for disposal operation, the locking portion releases the lancet holder. This integration combines the button pressing function and locking/release function into a single component, improving ease of operation while minimizing additional complexity.
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
Facilitates easier and more convenient performance of puncture-related operations by allowing all actions to be performed with one hand using a single button, reducing user error and improving usability.
Implementation Method 1
a first biasing member configured to bias the injector rod toward the first end side
Implementation Method 2
a second biasing member configured to bias the first engaged part toward the engagement component
Data Source
AI summary
It is an object of this disclosure to facilitate a series of puncture-related operations in a puncture instrument. In a main case of a puncture instrument, a main rod is provided. An injector rod is mounted to a main rod and includes a lancet holder on one end side. An actuating rod is mounted to the injector rod and has an engagement component on the other end side. A first biasing member biases the injector rod toward the first end side. A manipulation component is provided so as to be slidable in and out through an opening on the other end side of the main case. A locking member is axially supported rotatably by a portion of the main rod between the manipulation component and the injector rod. The locking member includes a first engaged part, a second engaged part and a second biasing member.