Hemostatic Device Switching 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, 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
1Reliability
If a hemostatic device uses multiple operation steps to ensure proper positioning before deployment, then the reliability of hemostasis is improved, but the ease of operation deteriorates due to the complexity of sequential steps
Solution Approach 1:
The device automatically controls the sequential operation steps through a switching mechanism that responds to the positioning state of the positioning member. When the positioning member is properly positioned in the blood vessel, the switching mechanism automatically enables the push-out operation, eliminating the need for manual sequencing and reducing operational complexity while maintaining reliability.
2Reliability
If the device includes a switching mechanism to control operation sequence, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The switching mechanism acts as an intermediary component that mediates between the positioning member's state and the push-out member's operation. This intermediary automatically transitions the device from a restricted state (where push-out is prevented) to an enabled state (where push-out is allowed) based on the positioning member's position, adding minimal complexity while ensuring reliable sequential operation.
3Manufacturing precision
If the push-out member is restricted until positioning is complete, then the reliability of proper agent placement is improved, but the productivity of the procedure deteriorates due to additional restriction steps
Solution Approach 1:
The device performs preliminary positioning of the positioning member in the blood vessel before enabling the push-out operation. The switching mechanism ensures that the push-out member remains restricted during the positioning phase, allowing precise placement to be achieved automatically without requiring additional manual steps that would reduce productivity.
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.