Dome Pressure Device for Arterial Hemostasis
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Solution Overview
Problem
Current methods for achieving hemostasis after a needle prick or puncture wound, such as those used in dialysis, are often ineffective, leading to continued bleeding post-treatment.
Innovation Solution
A device comprising a gauze, a dome with a rounded top, and a bandage is used to apply pressure over the wound, with the dome positioned over the gauze and bandage applied to exert downward pressure for hemostasis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gauze and bandage are used to apply pressure to stop bleeding after needle removal, then hemostasis is attempted, but the bleeding continues and the method is ineffective
Solution Approach 1:
The patent employs a dome-shaped object with a rounded top surface that conforms to the curvature of the patient's body over the puncture site. This curved geometry allows the dome to apply distributed pressure evenly across the wound area while maintaining contact stability, resolving the contradiction between achieving reliable hemostasis and keeping the device simple to apply.
Solution Approach 2:
The dome acts as an intermediary element between the bandage and the puncture site. It distributes the pressure from the bandage evenly across the wound area, preventing direct contact between the bandage and the sensitive puncture site while maintaining effective pressure for hemostasis.
2Reliability
If finger or thumb pressure is applied for ten minutes to achieve hemostasis, then pressure is exerted on the wound, but bleeding resumes when the patient leaves the medical office
Solution Approach 1:
The dome and bandage assembly is applied immediately after needle removal to establish pressure before the patient leaves the medical office. This preliminary application ensures hemostasis is achieved and maintained during the critical initial period, preventing bleeding resumption during transport or discharge.
Solution Approach 2:
The device is designed for easy self-application by the patient or medical staff. The dome can be placed directly over the puncture site and the bandage wrapped around the limb, creating a self-sustaining pressure system that requires no continuous manual pressure application.
3Reliability
If a fistula pressure clamp is placed over the needle prick to apply pressure, then hemostasis is attempted, but the method is largely ineffective and requires alternative approaches
Solution Approach 1:
The dome-shaped device is designed to be universally applicable to various puncture sites and wound types, including arterial and venous access sites. The curved geometry adapts to different body contours and anatomical locations, making the same basic device effective across multiple clinical scenarios without requiring specialized clamps for each situation.
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 device effectively stops bleeding within 5 minutes, suitable for both medical settings and emergency use, providing a reliable method for securing hemostasis in various scenarios.
Implementation Method 1
a bandage is placed over the dome and tightened so that pressure is applied downward onto the wound to enable hemostasis
Data Source
AI summary
A method for applying pressure after an arterial or veinous blood draw or puncture wound so as to achieve hemostasis. First a gauze is placed over the wound. Then a dome is placed over the gauze. The dome has a rounded top and the rounded top is adjacent to the gauze and over the wound. Finally, a bandage is placed over the dome and tightened so that pressure is applied downward onto the wound to enable hemostasis. In one preferred embodiment, the present invention is used in medical setting, such as a hospital or medical office. In another preferred embodiment, in the event of an emergency the present invention may be used to apply pressure to a wound that occurs as the result of injury to achieve hemostasis.