Endoscopic Tissue Clamp with Integrated Pivot Pin
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Solution Overview
Problem
Existing medical devices for tissue hemostasis through endoscopes are complex to operate and manufacture, requiring separate connecting elements like J-hooks, which can break and leave parts in the patient's body.
Innovation Solution
A medical device with clamp arms directly coupled to a control wire via a pivot pin, eliminating the need for separate connecting elements, and using exit-passages and guide grooves to securely lock the clamp arms to the clamp base without breaking, allowing easy assembly and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate connecting elements like J-hooks are used to couple clamp arms to the control wire, then the clamp device can be operated, but the device becomes more complex and the connecting elements may break leaving parts in the patient's body
Solution Approach 1:
The clamp arms are directly coupled to the distal end of the control wire, merging the clamp arms and control wire into a single integrated structure. This eliminates separate connecting elements like J-hooks, reducing the number of components and eliminating the risk of these connecting elements breaking and remaining in the patient's body.
Solution Approach 2:
The invention extracts and removes the separate connecting elements (J-hooks) from the system. By directly coupling the clamp arms to the control wire, the problematic intermediate connecting components are completely eliminated, simplifying the device and improving reliability.
2Ease of manufacture
If the clamp device uses multiple separate components (J-hooks, retainers, control wire connections), then the clamp can be set, but the device is more difficult to manufacture and assemble
Solution Approach 1:
By merging the clamp arms directly to the control wire structure, the invention reduces the total number of components that need to be manufactured and assembled. This integration simplifies the manufacturing process and assembly operations while maintaining the functional capability of the clamp device.
3Ease of operation
If the control wire is pulled back to disconnect the clamp device, then the clamp arms can be released, but the J-hooks may break instead of cleanly disconnecting
Solution Approach 1:
The invention removes the vulnerable J-hook connecting elements from the system. By directly coupling the clamp arms to the control wire, there are no separate connecting elements that can break during the disconnecting process. The clamp arms and control wire move together as an integrated unit, ensuring reliable operation without the risk of connecting element failure.
Data Source
AI summary
A medical device for tissue hemostasis or closure that is used by means of an endoscope, the medical device comprising: a handle (1); a sheath apparatus (2) attached to the handle (1); a clamping apparatus (3) comprising a clamping base (6) and at least or exactly two clamping arms (7a, 7b), the clamping base (6) specifically being a sleeve and being disposed on a distal end of the sheath apparatus (2); a control wire (4) that extends to pass through the sheath apparatus (2) and that can move reversibly in a distal direction and a proximal direction; and an actuator (5), the actuator (5) being coupled to a proximal end of the control wire (4) and being capable of actuating such that the control wire (4) moves reversibly in the distal direction and the proximal direction.