Disposable Blood Sampler with Threaded Cannula and Integrated Clamping
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Solution Overview
Problem
Current disposable blood samplers for blood bags are prone to cross-contamination and pose risks to medical staff due to inadequate sterilization and potential bodily harm from scissors, leading to increased iatrogenic infections and inefficient blood collection processes.
Innovation Solution
A disposable blood sampler with a hollow structure comprising a threaded cannula, blood braid clamp, connecting pipe, and needle inserting sheet, which allows for safe and efficient blood collection without scissors, featuring a threaded cannula for secure needle fixation, clamping slots for blood braid management, and a sealing cover for hygiene, preventing accidental needle punctures and ensuring effective blood flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If scissors are used to cut the blood braid for sample collection, then blood sampling can be performed, but cross-contamination occurs and medical staff are at risk of bodily harm
Solution Approach 1:
The invention extracts and eliminates the scissors from the blood sampling process by using a specialized cannula with a cutting edge that directly cuts the blood braid. This removes the harmful intermediary (scissors) that caused cross-contamination and safety risks, while maintaining the essential cutting function needed for blood collection.
Solution Approach 2:
The cannula acts as a new intermediary tool between the blood braid and the collection system. Instead of using scissors as the intermediary, the cannula with its integrated cutting edge and clamping mechanism provides a safer intermediate step that prevents direct contact with blood while still enabling effective cutting and sampling.
2Reliability
If scissors are sterilized once per bag of blood, then cross-contamination is reduced, but the process is inefficient and time-consuming
Solution Approach 1:
The invention employs a disposable cannula that is used once and then discarded, eliminating the need for repeated sterilization of reusable tools like scissors. This single-use approach ensures reliability by providing a fresh, sterile instrument for each blood bag while dramatically improving productivity by removing the time-consuming sterilization step from the workflow.
3Productivity
If one pair of scissors is used for multiple blood samples, then operational speed increases, but cross-contamination risk increases
Solution Approach 1:
The disposable cannula allows one instrument to be used for multiple blood samples without cross-contamination risk, as each cannula is sterile and single-use. This resolves the contradiction by providing both the speed of reusable tools and the reliability of sterilization, since the cannula is discarded after each use rather than requiring sterilization between uses.
4Ease of operation
If the blood braid is clamped and moved manually, then blood collection can be performed, but safety risks to medical staff increase
Solution Approach 1:
The invention merges the clamping function and the cutting function into a single integrated cannula system. The clamping slots and gripping mechanism are combined with the cutting edge, allowing the blood braid to be secured and cut without requiring separate manual handling steps that expose medical staff to safety risks.
Data Source
AI summary
A disposable blood sampler for a blood braid of a blood bag includes a blood taking needle cannula, a threaded cannula, a blood braid clamp, a connecting pipe, a needle inserting sheet and a blood braid. The blood taking needle cannula includes a tubular threaded structure at both ends, a bottom port of the threaded cannula is connected with the blood taking needle cannula, and an upper port of the threaded cannula includes symmetrically distributed clamping slots extending to a middle lower part of the wall. Grips are arranged on the outer wall surface of the blood braid clamp, and the blood braid clamp is arranged in the threaded cannula. The grip is arranged outside the clamping slot, and the connecting pipe is directly inserted into the upper port. An inner cavity in which the needle inserting sheet is placed is arranged inside the inner part of the connecting pipe.