Devices and methods for the delivery of blood clotting materials to bleeding wounds
View Patent ↗An apparatus for promoting the clotting of blood and controlling bleeding comprises a receptacle for retaining blood clotting material in particulate form therein. A pad for controlling bleeding comprises a mesh structure and a support attached to the mesh structure to facilitate the application of pressure to the pad and the wound. A bandage applicable to a bleeding wound comprises a mesh structure and a flexible substrate attached to the mesh structure, the substrate being a cloth or plastic member that may be adhesively attachable to cover a wound. In any embodiment, at least a portion of the receptacle or mesh structure is defined by a mesh having openings therein, and at least a portion of the particulate blood clotting material is in direct contact with blood. The mesh may include a zeolite powder impregnated or otherwise incorporated therein.
1. An apparatus for promoting the clotting of blood, comprising:
a pouch closed on all sides, the pouch comprising a first blood clotting material in powder form; and
a second blood clotting material in loose particulate form retained in the pouch;
wherein a portion of the first blood clotting material in powder form is exposed on a surface of the pouch, and
wherein the pouch further comprises a mesh having openings that are sufficiently large to allow at least a portion of the second blood clotting material to extend through the openings to allow contact with blood outside of the pouch.
2. The apparatus of claim 1 , wherein the first blood clotting material comprises a zeolite.
3. The apparatus of blood of claim 2 , wherein the zeolite comprises particles having diameters of about 0.2 mm to about 10 mm.
4. The apparatus of blood of claim 2 , wherein the zeolite comprises particles having diameters of about 1 mm to about 7 mm.
5. The apparatus of blood of claim 2 , wherein the zeolite comprises particles having diameters of about 2 mm to about 5 mm.
6. The apparatus of blood of claim 1 , wherein the mesh is flexible.
7. The apparatus of blood of claim 1 , wherein one or both of the first and second blood clotting materials is a molecular sieve material.
8. An apparatus for promoting the clotting of blood, comprising:
a pouch closed on all sides, the pouch having a first blood clotting material in powder form applied thereto; and
a second blood clotting material in loose particulate form retained in the pouch;
wherein a portion of the first blood clotting material in powder form is exposed on a surface of the pouch, and
wherein the pouch further comprises a mesh having openings that are sufficiently large to allow at least a portion of the second blood clotting material to extend through the openings to allow contact with tissue of a bleeding wound outside of the pouch.
9. The apparatus of claim 8 , wherein the first blood clotting material comprises a zeolite.
10. The apparatus of blood of claim 9 , wherein the zeolite comprises particles having diameters of about 0.2 mm to about 10 mm.
11. The apparatus of blood of claim 9 , wherein the zeolite comprises particles having diameters of about 1 mm to about 7 mm.
12. The apparatus of blood of claim 9 , wherein the zeolite comprises particles having diameters of about 2 mm to about 5 mm.
13. The apparatus of blood of claim 8 , wherein the mesh is flexible.
14. The apparatus of blood of claim 8 , wherein one or both of the first and second blood clotting materials is a molecular sieve material.
15. A method of accelerating the clotting of blood in a bleeding wound comprising:
providing an apparatus comprising:
a mesh pouch closed on all sides, the mesh pouch comprising a first blood clotting material in powder form,
a second blood clotting material in loose particulate form retained in the pouch,
wherein a portion of the first blood clotting material in powder form is exposed on a surface of the pouch, and
wherein the pouch further comprises a mesh having openings that are sufficiently large to allow at least a portion of the second blood clotting material to extend through the openings to allow contact with blood outside of the pouch;
applying the apparatus to the bleeding wound; and
maintaining the apparatus at the bleeding wound at least until blood from the wound begins to clot.
16. The method of claim 15 , wherein the first blood clotting material comprises a zeolite.
17. The method of claim 16 , wherein the zeolite comprises particles having diameters of about 0.2 mm to about 10 mm.
18. The method of claim 16 , wherein the zeolite comprises particles having diameters of about 1 mm to about 7 mm.
19. The method of claim 16 , wherein the zeolite comprises particles having diameters of about 2 mm to about 5 mm.
20. The method of claim 15 , wherein the mesh is flexible.
21. The method of claim 15 , further comprising applying pressure to the apparatus while the apparatus is applied to the bleeding wound.
22. The apparatus of blood of claim 15 , wherein one or both of the first and second blood clotting materials is a molecular sieve material.