Engineered Adhesives and Patches for Non-Compressible

Hemorrhage Control

Uncontrolled bleeding resulting from traumatic and irregularly shaped wounds leads to a significant loss of lives in both civilian and military populations. In the United States alone, traumatic injuries result in over 150,000 deaths annually, with hemorrhage being the major cause of potentially survivable death. Moreover, the war in Ukraine has shown that most of the injuries from high-energy weapons result in major abdominal and extremity trauma. A U.S. military forward surgical team database study of combat mortality in Afghanistan showed that of all fatalities, only 14% died in a pre-hospital setting whereas 86% died in a Role 2 facility with most deaths arising from complications due to non-compressible torso hemorrhage (NCTH). Additionally, the removal of material post hemostasis can be cumbersome and leads to rebleeding.

The non-compressible irregularly shaped wounds, deranged coagulation due to medications, and cumbersome material removal after hemostasis pose a multi-faceted challenge. Commercially available solutions to address this challenge are cost-intensive, pose immunogenic risks, cause systemic thrombotic events, or lack biodegradability. Our strategy for tackling this complex problem is to develop liquid and solid biodegradable hemostatic material formats. Flowable adhesives possess the ability to fill irregular wounds and form a seal, while solid electrospun patches (EPs) restrict blood to the wound site and trigger clot formation.

We use our peptidomimetic polyester platform to design biodegradable materials to stop the bleeding and degrade after serving its purpose. We draw inspiration from the stickiness of mussel foot proteins and the hemostatic action of biopolymers like chitosan and alginate. We believe that combining a flowable sealant with electrospun patches designed to harness the blood’s procoagulant functions will help address the challenge of uncontrolled bleeding.

Relevant publications from our lab:

Design principles for creating synthetic underwater adhesives

Narayanan, Amal; Dhinojwala, Ali; Joy, Abraham*; Chem. Soc. Rev., 202150, 13321-13345.

Lower Critical Solution Temperature-Driven Self-Coacervation of Nonionic Polyester Underwater Adhesives

Narayanan, Amal; Menefee, Joshua R.; Liu, Qianhui; Dhinojwala, Ali; Joy, Abraham*; ACS Nano 2020, 14 (7), 8359-8367.

Viscosity Attunes the Adhesion of Bioinspired Low Modulus Polyester Adhesive Sealants to Wet Tissues

Narayanan, Amal; Kaur, Sukhmanjot; Peng, Chao; Debnath, Dibyendu; Mishra, Kaushik; Liu, Qianhui; Dhinojwala, Ali; Joy, Abraham*; Biomacromolecules 201920 (7), 2577-2586