Implanted Infusion Needle System for Precise Drug Delivery
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Solution Overview
Problem
Current methods for inducing penis erection, such as injecting medicaments like papaverine or prostaglandin E1 into the corpora cavernosa, are inconvenient and require manual skill, with potential for improper administration and dosing, and existing devices are not designed for simultaneous or quasi-simultaneous injection at multiple sites.
Innovation Solution
A system with permanently implanted infusion needles and a reservoir, allowing for the injection of a substance into the corpus cavernosum and deep arteries, enabling convenient and precise delivery of the drug through a pump and drive unit, with the option for simultaneous or rapid succession injections at multiple sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual injection of medicament into corpora cavernosa is performed, then erection stimulation is achieved, but patient convenience deteriorates and administration precision worsens
Solution Approach 1:
The infusion needle is permanently implanted in the penis before the patient needs treatment. This preliminary implantation eliminates the need for manual needle insertion during the actual injection, improving both convenience and precision. The needle is positioned in advance at the optimal location for drug delivery.
Solution Approach 2:
The patient can self-administer the medication through the pre-implied needle without requiring manual insertion skills. The system serves itself by using the permanently implanted needle for all future injections, eliminating the need for the patient to learn and perform manual injection techniques.
2Reliability
If single injection site is used, then device simplicity is maintained, but treatment effectiveness deteriorates
Solution Approach 1:
The penis is divided into multiple injection zones with separate infusion needles implanted in different locations (e.g., right and left corpora cavernosa, deep arteries). Each needle can be independently activated to target specific anatomical regions, improving treatment effectiveness while maintaining relatively simple individual needle designs.
Solution Approach 2:
The infusion needle system is designed to perform multiple functions: it can inject into different anatomical structures (corpora cavernosa, deep arteries), can be activated multiple times, and can target different zones simultaneously or sequentially. This multi-functionality improves treatment effectiveness without requiring completely different devices for each function.
3Speed
If immediate injection is performed, then response time is improved, but medication stability deteriorates
Solution Approach 1:
The medicament is prepared and loaded into the infusion needle reservoir in advance, where it remains stable. The needle is implanted before the patient needs treatment, allowing the medication to be stored stably until the moment of injection. This eliminates the need to mix medications immediately before use.
Solution Approach 2:
The infusion needle system acts as an intermediary between the stable stored medication and the target tissue. The medication remains stable in the reservoir and is only released when needed through the implanted needle, separating the storage function (stability) from the delivery function (speed).
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system enhances patient comfort by eliminating the need for manual needle insertion and ensures accurate drug delivery, improving the convenience and effectiveness of penis erection stimulation.
Implementation Method 1
a pump (30) arranged to advance the infusion liquid from the reservoir (22) to the infusion needle (11)
Implementation Method 2
a pump (30) arranged to advance the infusion liquid from the reservoir (22) to the infusion needle (11)
Data Source
AI summary
A penis erection stimulation system comprises one or more infusion needles disposed within and implanted along with one or more housings adjacent the patient's left and right corpora cavernosa. A reservoir and a pump are also implanted inside the patient's body to supply the infusion needle with infusion liquid. A drive unit also adapted for implantation inside the patient's body is arranged for advancing and retracting the tip end of the infusion needle such that it penetrates the housing at least in two different penetration areas either simultaneously or in immediate time succession, thereby injecting drugs along with the infusion liquid into the patient's body for stimulating penis erection.