Hemostatic Device Switching Mechanism for Sequential Agent Deployment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hemostatic devices require precise sequential operation steps to effectively close a blood vessel puncture site, and improper sequencing can lead to incomplete sealing or hemostatic agent exposure, posing challenges for users unfamiliar with the device.
Innovation Solution
A hemostatic device with a switching mechanism that restricts the push-out operation until a preceding operation is complete, ensuring the hemostatic agent is properly positioned before being deployed, and includes a restricting member to prevent agent entry into the vessel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the push-out operation is performed before the positioning operation is complete, then the hemostatic agent can be deployed earlier, but the agent may be exposed prematurely or enter the vessel improperly, compromising sealing effectiveness
Solution Approach 1:
The device requires the positioning member to be advanced into the vessel and positioned against the puncture site before the push-out member can deploy the hemostatic agent. This preliminary positioning action ensures the agent is released at the correct location and prevents premature exposure or improper entry into the vessel, resolving the contradiction between deployment speed and sealing effectiveness
Solution Approach 2:
The push-out member acts as an intermediary mechanism that controls the timing and location of hemostatic agent deployment. It remains engaged with the agent until positioning is complete, then pushes the agent out at the precise moment and location needed, ensuring both rapid deployment and reliable sealing
2Reliability
If multiple operation steps are required in precise sequence, then the device can ensure proper positioning and deployment, but the complexity of operation increases for users
Solution Approach 1:
The device combines multiple operation steps into a single integrated mechanism. Advancing the positioning member and deploying the hemostatic agent are linked so that proper positioning automatically enables deployment, eliminating the need for users to manually coordinate separate steps while maintaining precise sequencing and high reliability
Solution Approach 2:
The device performs self-checking and self-enforcement of the correct operation sequence. The mechanical design ensures that the push-out member cannot deploy the agent until the positioning member is properly positioned, making the device guide its own operation and reducing the cognitive burden on users
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A hemostatic device (10) is provided with: a first tubular member (8C); a positioning member (8A) having a first engagement section (82) able to engage with an opening of a blood vessel; a hemostatic agent (S) arranged further to a proximal end side than the first engagement section (82) of the first positioning member (8A); a push-out member (8B) making it possible to push the hemostatic agent (S) out from a distal end section of the first tubular member (8C) when the push-out member is moved in a relative manner to a distal end side relative to the first tubular member (8C); a housing (71); a first operation unit (510) for executing a first distal end operation for causing the first tubular member (8C) and the push-out member (8B) to move in a relative manner to the distal end side, and a second distal end operation for causing the push-out member (8B) to move in a relative manner to the distal end side; and a switching mechanism for restricting the second distal end operation until the first distal end operation is completed and, in response to completion of the first distal end operation, releasing the restriction of the second distal end operation and enabling execution thereof.