CA2455510A1 - A hemostatic composition - Google Patents

A hemostatic composition Download PDF

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Publication number
CA2455510A1
CA2455510A1 CA002455510A CA2455510A CA2455510A1 CA 2455510 A1 CA2455510 A1 CA 2455510A1 CA 002455510 A CA002455510 A CA 002455510A CA 2455510 A CA2455510 A CA 2455510A CA 2455510 A1 CA2455510 A1 CA 2455510A1
Authority
CA
Canada
Prior art keywords
composition
core particles
group
particulate material
coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002455510A
Other languages
French (fr)
Other versions
CA2455510C (en
Inventor
Sanjay Kotha
Tirumalai S. Sudarshan
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Materials Modification Inc
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2455510A1 publication Critical patent/CA2455510A1/en
Application granted granted Critical
Publication of CA2455510C publication Critical patent/CA2455510C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L24/00Surgical adhesives or cements; Adhesives for colostomy devices
    • A61L24/02Surgical adhesives or cements; Adhesives for colostomy devices containing inorganic materials
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00Medicinal preparations containing peptides
    • A61K38/16Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • A61K38/43Enzymes; Proenzymes; Derivatives thereof
    • A61K38/46Hydrolases (3)
    • A61K38/48Hydrolases (3) acting on peptide bonds (3.4)
    • A61K38/482Serine endopeptidases (3.4.21)
    • A61K38/4833Thrombin (3.4.21.5)
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00Medicinal preparations containing peptides
    • A61K38/16Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • A61K38/43Enzymes; Proenzymes; Derivatives thereof
    • A61K38/46Hydrolases (3)
    • A61K38/48Hydrolases (3) acting on peptide bonds (3.4)
    • A61K38/482Serine endopeptidases (3.4.21)
    • A61K38/4846Factor VII (3.4.21.21); Factor IX (3.4.21.22); Factor Xa (3.4.21.6); Factor XI (3.4.21.27); Factor XII (3.4.21.38)
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/48Preparations in capsules, e.g. of gelatin, of chocolate
    • A61K9/50Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
    • A61K9/5005Wall or coating material
    • A61K9/501Inorganic compounds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/48Preparations in capsules, e.g. of gelatin, of chocolate
    • A61K9/50Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
    • A61K9/5094Microcapsules containing magnetic carrier material, e.g. ferrite for drug targeting
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P7/00Drugs for disorders of the blood or the extracellular fluid
    • A61P7/04Antihaemorrhagics; Procoagulants; Haemostatic agents; Antifibrinolytic agents
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2400/00Materials characterised by their function or physical properties
    • A61L2400/04Materials for stopping bleeding

Abstract

A hemostatic composition includes a carrier medium including a predetermined amount of a particulate material. The particulate material is comprised of core particles with a coating. The core particles have an average particle size of about 5 nm to 10 pm, and the coating is one of gold, silica, silver, platinum, steel, cobalt, carbon, a polymer, or a combination thereof.

Claims (32)

1. A hemostatic composition, comprising:
a) a carrier medium;
b) a predetermined amount of a particulate material in said medium;
c) said particulate material comprising core particles with a coating;
d) said core particles having an average particle size of about 5 nm to 10 µm; and e) said coating comprising a member selected from the group consisting of gold, silica, silver, platinum, steel, cobalt, carbon, a polymer, procoagulant molecules, and a combination thereof.
2. The composition of Claim 1, wherein:
a) said core particles comprise a member selected from the group consisting of iron, iron oxide, cobalt, cobalt oxide, nickel, nickel oxide, and an alloy or a combination thereof.
3. The composition of Claim 1, wherein:
a) said core particles have an average particle size of about 10 nm to 1 µm.
4. The composition of Claim 1, wherein:
a) said core particles have an average particle size of about 10 nm to 300 nm.
5. The composition of Claim 1, wherein:
a) said core particles comprise a general shape selected from the group consisting of a sphere, a needle, a cube, an oval, irregular, a cylinder, a diamond, and a combination thereof.
6. The composition of Claim 1, wherein:
a) said core particles comprise clusters.
7. The composition of Claim 1, wherein:
a) said core particles comprise the general shape of blood platelets.
8. The composition of Claim 1, wherein:
a) said polymer is selected from the group consisting of polyethylene glycol, dextran, Tween, sorbitol, mannitol, and a combination thereof.
9. The composition of Claim 1, wherein:
a) said coating has a thickness of about 1 nm to 1 µm.
10. The composition of Claim 1, wherein:
a) said coating has a thickness of about 5nm to 50nm.
11. The composition of Claim 1, wherein:
a) said procoagulant molecules are selected from the group consisting of thrombin and Factor VII a.
12. The composition of Claim 1, further comprising:
a) a surfactant or dispersant.
13. The composition of Claim 1, wherein:
a) the concentration of said particulate material is about 0.1% to 70% (w/w) of the composition.
14. The composition of Claim 1, wherein:
a) said particulate material is non-toxic to bio-cells or biomolecules.
15. The composition of Claim 1, wherein:
a) said carrier is selected from the group consisting of water, saline solution, sugar solution, Lactose Ringers, and blood plasma.
16. The composition of Claim 1, wherein:
a) said core particles have a narrow distribution of sizes.
17. A magnetic hemostatic fluid for controlling external or internal bleeding in a subject, comprising:
a) a carrier fluid;
b) a predetermined amount of a magnetic particulate material in said fluid;
c) said particulate material comprising core particles with a coating having a thickness of about 1 nm to 10 µm;
d) said core particles having an average particle size of about 5 nm to 10 µm;
18 e) said core particles comprising a member selected from the group consisting of iron, iron oxide, cobalt, cobalt oxide, nickel, nickel oxide, and an alloy or a combination thereof;
and f) said coating comprising a member selected from the group consisting of gold, silica, silver, platinum, steel, cobalt, carbon, a polymer, and a combination thereof.

18. The composition of Claim 17, wherein:
a) said core particles have an average particle size of about 10 nm to 1 µm.
19. The composition of Claim 17, wherein:
a) said core particles have an average particle size of about 10 nm to 300 nm.
20. The composition of Claim 17, wherein:
a) said core particles comprise a general shape selected from the group consisting of a sphere, a needle, a cube, an oval, irregular, a cylinder, a diamond, and a combination thereof.
21. The composition of Claim 17, wherein:
a) said core particles comprise clusters.
22. The composition of Claim 17, wherein:
a) said core particles comprise the general shape of blood platelets.
23. The composition of Claim 17, wherein:
a) said polymer is selected from the group consisting of polyethylene glycol, dextran, Tween, sorbitol, mannitol, and a combination thereof.
24. The composition of Claim 17, wherein:
a) said coating has a thickness of about 5nm to 50nm.
25. The composition of Claim 17, wherein:
a) said procoagulant molecules are selected from the group consisting of thrombin and Factor VII a.
26. The composition of Claim 17, further comprising:
a) a surfactant or dispersant.
27. The composition of Claim 17, wherein:
b) the concentration of said particulate material is about 0.1% to 70% (w/w) of the composition.
28. The composition of Claim 17, wherein:
a) said particulate material is non-toxic to bio-cells or biomolecules.
29. The composition of Claim 17, wherein:
b) said carrier is selected from the group consisting of water, saline solution, sugar solution, Lactose Ringers, and blood plasma.
30. The composition of Claim 17, wherein:
a) said core particles have a narrow distribution of sizes.
31. The composition of Claim 17, wherein:
a) the magnetic particles comprise paramagnetic or superparamagnetic particles.
32. A method of controlling bleeding in a subject in need thereof, comprising the steps of:
a) administering to a subject having internal or external bleeding a predetermined amount of a hemostatic fluid;
b) the hemostatic fluid, comprising:
i) a carrier medium;
ii) a predetermined amount of a particulate material in the medium;
iii) the particulate material comprising core particles with a coating;
iv) the core particles having an average particle size of about 5 nm to 10 µm; and v) the coating comprising a member selected from the group consisting of gold, silica, silver, platinum, steel, cobalt, carbon,' a polymer, procoagulant molecules, and a combination thereof;
c) applying a magnetic field adjacent the site of a lesion causing the bleeding so as to form a cluster of the particulate material for thereby preventing the flow of blood through the lesion.
CA2455510A 2002-05-31 2003-05-28 A hemostatic composition Expired - Fee Related CA2455510C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/157,921 2002-05-31
US10/157,921 US7670623B2 (en) 2002-05-31 2002-05-31 Hemostatic composition
PCT/US2003/014545 WO2003101429A1 (en) 2002-05-31 2003-05-28 A hemostatic composition

Publications (2)

Publication Number Publication Date
CA2455510A1 true CA2455510A1 (en) 2003-12-11
CA2455510C CA2455510C (en) 2010-04-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2455510A Expired - Fee Related CA2455510C (en) 2002-05-31 2003-05-28 A hemostatic composition

Country Status (7)

Country Link
US (1) US7670623B2 (en)
EP (1) EP1509206B1 (en)
AT (1) ATE429937T1 (en)
AU (1) AU2003237809A1 (en)
CA (1) CA2455510C (en)
DE (1) DE60327431D1 (en)
WO (1) WO2003101429A1 (en)

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US7670623B2 (en) 2010-03-02
US20030224056A1 (en) 2003-12-04
WO2003101429A1 (en) 2003-12-11
AU2003237809A1 (en) 2003-12-19
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ATE429937T1 (en) 2009-05-15
EP1509206A4 (en) 2006-03-15

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