C-Shaped Driver for Sacral Hemorrhage Occluder Pin Insertion
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Solution Overview
Problem
Existing devices and methods for driving a hemorrhage occluder pin into the human sacrum face challenges such as incomplete insertion due to anatomical constraints and surgeon hand strength limitations, leading to potential bleeding site dislodgment and risk of blood-borne pathogen exposure.
Innovation Solution
A C-shaped driver with a blunt proximal end and a driver face at the distal end, designed to facilitate full insertion of the hemorrhage occluder pin into the sacrum by applying an impact force, featuring a malleable handle for positioning and a concave face to accommodate the pubic bone, reducing the risk of tissue damage and ensuring stable pin placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a surgeon inserts a hemorrhage occluder pin by hand, then the insertion force required is high, but this increases the risk of tearing gloves and skin and exposing the surgeon to blood-borne diseases
Solution Approach 1:
The patent introduces a driver as an intermediary tool between the surgeon and the pin. The driver receives the insertion force from the surgeon and transfers it to the pin, allowing the surgeon to apply force through a protected interface rather than directly manipulating the pin with exposed hands, thus reducing the risk of blood-borne pathogen exposure while maintaining the necessary insertion force
2Object-affected harmful factors
If a conventional surgical clamp is used to protect the hand, then hand protection is improved, but the clamp is not shaped to conveniently access the bleeding site or be positioned in the proper relationship to the pin
Solution Approach 1:
The driver is designed with specific local geometric features including a curved shaft portion that conforms to the anatomical curvature of the sacrum and pubic bone, and a driver face with specific orientation relative to the pin axis. This localized geometric optimization allows the driver to access the bleeding site conveniently while maintaining the proper relationship with the pin for effective occlusion
3Ease of operation
If the pin is not inserted fully, then insertion difficulty is reduced, but the bleeding vessels may not remain occluded and abnormal movement may dislodge the pin
Solution Approach 1:
The driver serves as a force-transmitting intermediary that enables full pin insertion without requiring direct hand manipulation. By providing a mechanical advantage through the driver's lever arm and focused driver face, the system allows complete pin penetration while maintaining operational feasibility, thereby ensuring reliable occlusion stability
4Adaptability or versatility
If the driver face diameter is made large, then the driver can accommodate various pin cap sizes, but the driver becomes less precise in positioning and applying force to the pin cap
Solution Approach 1:
The driver face is designed with a specific diameter that provides optimal local contact with the pin cap. This localized dimension optimization ensures precise force application to the pin cap while maintaining adequate adaptability across different pin types through the driver's overall geometric flexibility and the curved shaft portion's adaptability to anatomical variations
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
The solution enables safe, complete, and certain insertion of the hemorrhage occluder pin, reducing the risk of bleeding site dislodgment and protecting the surgeon from blood-borne pathogens, thereby effectively terminating hemorrhaging during colorectal surgery.
Implementation Method 1
The proximal end of the C-shaped shaft has a blunt face for receiving an impact force
Data Source
AI summary
A method and apparatus to terminate sacral hemorrhaging in a patient having a sacrum and a pubic bone is disclosed. A C-shaped driver is positioned around the pubic bone of the patient and a hemorrhage occluder pin is driven into the sacrum of the patient by applying an impact force to a proximal end of the C-shaped driver. The driver may include a C-shaped shaft that defines a radius in the range 50 mm to 200 mm and a maximum span in the range 100 mm to 650 mm. The proximal end of the C-shaped shaft may have a blunt face with a breadth that is at least 2.5 times the diameter of the pin cap. A shaft distal end has a driver face facing away from an interior of the C-shape, and defining a driver face diameter that is preferably no less than 50% of the pin cap diameter.