Interchangeable Syringe with Variable Volume Carpule
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Solution Overview
Problem
The frequent need for multiple injections and the associated health risks, costs, and emotional trauma due to the limited volume of standard carpules in syringes, which require frequent reloading and result in increased material usage and procedural time.
Innovation Solution
A syringe system that allows for the use of non-standard carpules with varying volumes, enabling a single syringe to deliver a greater or lesser volume of fluid than standard carpules, with interchangeable and removable barrels and needles for improved efficiency and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If standard carpules are used in syringes, then the syringe can be manufactured and operated with standard components, but the volume of fluid that can be delivered is limited and requires frequent reloading
Solution Approach 1:
The syringe system is divided into separable components: a reusable syringe body and interchangeable carpules of various sizes. This segmentation allows the carpule (fluid container) to be replaced independently, enabling flexible volume delivery without redesigning the entire syringe system. The plunger rod with hook mechanism remains standardized while accommodating different carpule volumes.
Solution Approach 2:
The system transitions from static standard-volume carpules to dynamic, interchangeable carpules of varying volumes. The reusable syringe body with standardized interface accepts carpules of different sizes, allowing the fluid delivery capacity to be dynamically adjusted based on patient needs, thereby reducing the frequency of reloading operations.
2Quantity of substance
If multiple standard carpules are used to deliver larger volumes, then the required fluid volume can be achieved, but health risks increase due to multiple needle sticks
Solution Approach 1:
Multiple small-volume carpule deliveries are merged into a single larger-volume carpule delivery. By using interchangeable carpules, the system consolidates what would require multiple separate injection procedures into one continuous infusion, thereby reducing the number of needle sticks and associated health risks while delivering the same total fluid volume.
Solution Approach 2:
The system enables continuous fluid delivery from a single carpule without interruption or removal of the needle. The reusable syringe body maintains continuous connection to the patient, allowing the plunger to continuously push fluid from larger carpules without breaking the infusion chain, thus eliminating repeated needle insertions.
3Quantity of substance
If multiple standard carpules are used, then the required fluid volume can be delivered, but time is lost due to frequent reloading
Solution Approach 1:
Carpules of appropriate large volumes are selected and prepared in advance based on the required treatment volume. The reusable syringe system allows pre-loading of appropriately sized carpules, eliminating the need for mid-procedure reloading calculations and preparations. This preliminary planning reduces downtime during fluid delivery procedures.
Solution Approach 2:
The system changes the volume parameter of carpules from fixed standard sizes to variable interchangeable sizes. By selecting carpules with volumes matched to treatment requirements, the system optimizes the duration of each infusion session, minimizing the frequency of reloading operations and associated time losses.
4Quantity of substance
If multiple standard carpules are used, then larger fluid volumes can be delivered, but costs increase due to multiple carpule purchases
Solution Approach 1:
The system uses disposable carpules of various sizes paired with a reusable syringe body. By investing in a durable reusable syringe mechanism and using disposable carpules optimized for volume, the system reduces long-term costs compared to repeatedly using small standard carpules. The reusable component amortizes its cost over many uses, while larger carpules reduce the total number of disposable units required.
Data Source
AI summary
Methods and apparatuses are disclosed with regard to syringe-transfer of a solution or other fluid within a carpule. One embodiment includes an apparatus that is a non-standard carpule barrel having a top portion, a bottom portion, and a barrel portion therebetween. The top portion includes an opening for receiving a syringe plunger and at least a first portion of a connection mechanism for connecting to an upper portion of the syringe. The bottom portion includes another opening capable of holding a bottom end of the carpule, wherein the carpule may be a standard carpule or a non-standard carpule. The barrel portion is located between the top portion and bottom portion, wherein the barrel portion includes a cradle, and wherein the cradle has a length capable of holding a standard carpule or a non-standard carpule and a width greater than the standard carpule.