Hemostatic Device With Dissolvable Coating for Bleeding Control
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Solution Overview
Problem
Current hemostatic devices, such as fibrin glues and biodegradable collagen patches, are difficult to handle and administer due to their fluidity and limited penetration of blood-clotting components, which restricts their effectiveness in minimizing blood loss at bleeding sites.
Innovation Solution
A hemostatic device featuring a dissolvable coating that encloses a hemostatic substance, allowing it to dissolve and release the substance at the wound site, promoting blood clot formation and incorporating various hemostatic materials like HEMOS, thrombin, and fibrinogen, which can be shaped and formulated for efficient application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fibrin glue is used as a coagulating substance, then blood loss can be stopped, but the fluidity makes it difficult to handle and administer
Solution Approach 1:
The patent employs a collagen carrier in the form of a foam, web, or film that serves as a flexible support structure. This carrier can be easily handled and applied to the wound site, while the blood-clotting components are coated onto its surface, combining ease of application with effective hemostasis.
Solution Approach 2:
The invention creates a composite structure by coating a mixture of blood-clotting components (fibrinogen and thrombin) onto a biodegradable collagen carrier. This composite material combines the structural advantages of the collagen carrier with the hemostatic properties of the coated components, resolving the contradiction between effectiveness and ease of use.
2Ease of manufacture
If active components are coated on the surface of the collagen carrier, then the coating can be applied, but the components cannot penetrate beyond the surface, limiting the concentration available
Solution Approach 1:
The patent utilizes a porous collagen carrier structure that allows blood-clotting components to penetrate into the interior. The porosity enables the components to be distributed throughout the volume of the carrier rather than remaining only on the surface, thereby increasing the total concentration available at the wound site while maintaining ease of coating application.
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 reduces or stops blood loss by allowing the hemostatic substance to penetrate and promote clot formation, providing a simpler and more effective means of achieving hemostasis compared to existing technologies.
Implementation Method 1
a dissolvable coating or covering... The coating dissolves after delivery to a location of interest
Implementation Method 2
The hemostatic substance generally begins the process of hemostasis upon contact with blood or blood components... promoting blood clot formation
Data Source
AI summary
A hemostatic device includes a dissolvable coating and a hemostatic substance enclosed within the coating. The device can have, for example, a generally spherical shape. The hemostatic substance can be particles that take any shape, such as spherical, flat sheets, cubes, or other regular or irregular shapes of any size or volume that can be used on or within a body.