Blunt-End Implantation Tool for Penile Prosthetic Cylinders
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Solution Overview
Problem
Current penile prosthetic implantation procedures require the use of a Keith needle, which can cause bleeding and discomfort, and the deflated cylinders lack column strength, making them difficult to push into the penis, necessitating the use of sutures for insertion.
Innovation Solution
A tool with a barrel and a clasp is introduced, allowing for the measurement of corpora cavernosum length and the secure implantation of deflated prosthetic cylinders without the need for a needle, using a blunt end surface to guide the cylinder into place, eliminating the use of sutures and reducing discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a Keith needle is used to insert the suture through the corpora cavernosum, then the suture can be securely positioned, but bleeding and patient discomfort occur
Solution Approach 1:
The patent removes the Keith needle from the implantation procedure entirely. Instead of using a needle to puncture the corpora cavernosum and insert a suture, the invention uses a specialized tool with a clasp mechanism that grasps the deflated cylinder and pushes it directly into the corpora cavernosum through a corporotomy opening, eliminating needle puncture and associated bleeding risks
Solution Approach 2:
The patent introduces a specialized implantation tool as an intermediary device. This tool includes a barrel and a clasp that works together to grasp the deflated cylinder and push it into the corpora cavernosum. The clasp acts as a mediator between the surgeon's hand and the cylinder, providing secure grasping and controlled insertion without requiring needle puncture
2Object-affected harmful factors
If the deflated cylinder is pushed directly into the penis, then needle use is eliminated, but the cylinder lacks column strength making insertion difficult
Solution Approach 1:
The patent applies preliminary action by using the clasp to grasp and pre-position the deflated cylinder before insertion. The clasp securely holds the cylinder in place, allowing the surgeon to apply controlled pushing force through the barrel without the cylinder buckling or deforming. This preliminary grasping and positioning enables successful insertion of the soft, deflated cylinder without requiring it to have inherent column strength
3Reliability
If sutures are used to tow the cylinder into place, then the cylinder can be inserted securely, but the procedure becomes more complex and time-consuming
Solution Approach 1:
The patent removes the suture-towing step from the implantation procedure. Instead of securing a suture to the cylinder, passing it through the corpora cavernosum with a needle, and then using the suture to tow the cylinder into place, the invention uses a self-contained tool with a clasp that directly grasps and pushes the cylinder into position in a single integrated action
Solution Approach 2:
The patent merges multiple functions into a single integrated tool. The barrel and clasp work together as one unit to perform both the grasping of the cylinder and the pushing insertion into the corpora cavernosum. This combines what would otherwise require separate steps (suture attachment, needle insertion, suture towing) into a single simplified operation
Data Source
AI summary
A method of implanting a penile prosthetic includes providing a tool having a barrel and a clasp. The barrel has a curved exterior perimeter and the clasp has a distal end that is free to move away from and towards the barrel. The method includes securing a first lateral edge of a deflated penile implant between the interior surface of the clasp and the curved exterior perimeter of the barrel and securing a second lateral edge of the deflated penile implant between the interior surface of the clasp and the curved exterior perimeter of the barrel, and placing the barrel of the tool and the deflated penile implant into a corpora cavernosum of a penis.