Claims for Patent: 11,241,522

Summary for Patent: 11,241,522

Title:	Apparatus for removing chemotherapy compounds from blood
Abstract:	A filter apparatus for removing small molecule chemotherapy agents from blood is provided. The filter apparatus comprises a housing with an extraction media comprised of polymer coated carbon cores. Also provided are methods of treating a subject with cancer of an organ or region comprising administering a chemotherapeutic agent to the organ or region, collecting blood laded with chemotherapeutic agent from the isolated organ, filtering the blood laden with chemotherapeutic agent to reduce the chemotherapeutic agent in the blood and returning the blood to the subject.
Inventor(s):	Daniel S. Johnston, Jacques Chammas, William M. Appling, Samantha J. Barton
Assignee:	Delcath Systems Inc
Application Number:	US16/740,166
Patent Claims:	1. A filter apparatus comprising a housing having an inlet and an outlet, and an extraction media comprising hemocompatible polymer coated carbon cores contained within the housing, wherein the carbon cores have a pore volume of about 1.68 cc/g to about 2.19 cc/g. 2. A filter apparatus according to claim 1, wherein the carbon cores have a particle diameter of about 0.45 mm to about 1.15 mm. 3. A filter apparatus according to claim 1, wherein the carbon cores have an apparent density of about 0.19 g/cc to about 0.2 g/cc. 4. A filter apparatus according to claim 1, wherein the carbon cores have an apparent density of less than 0.2 g/cc. 5. A filter apparatus according to claim 1, wherein the carbon cores have a median microporous diameter (D50,micro) of between about 9.3 Å to about 10.5 Å. 6. A filter apparatus according to claim 1, wherein the carbon cores have a median mesoporous diameter (D50,meso) of between about 30 Å to about 156 Å. 7. A filter apparatus according to claim 1, wherein the hemocompatible polymer coated carbon cores contained within the housing are coated with a semipermeable polymer, the semipermeable polymer comprised of material selected from the group consisting of cellulose, a methacrylate polymer, and combinations thereof. 8. A filter apparatus according to claim 7, wherein the semipermeable polymer coating is a methacrylate selected from the group consisting of polymethylmethacrylate (PMMA), polyethylmethacrylate (PEMA), polyhydroxyethyl-methacrylate (PHEMA) and combinations thereof. 9. A dual filter apparatus for removing small molecule chemotherapy agents from blood comprising: two filter apparatus arranged for fluid to flow through the two filter apparatus in parallel, wherein each filter of the two filter apparatus comprises a housing having an inlet and an outlet and an extraction media comprising hemocompatible polymer coated carbon cores contained within the housing, wherein the carbon cores have a pore volume of about 1.68 cc/g to about 2.19 cc/g. 10. A dual filter apparatus according to claim 9, wherein the carbon cores have a particle diameter of about 0.45 mm to about 1.15 mm. 11. A dual filter apparatus according to claim 9, wherein the carbon cores have an apparent density of about 0.19 g/cc to about 0.2 g/cc. 12. A dual filter apparatus according to claim 9, wherein the carbon cores have an apparent density of less than 0.2 g/cc. 13. A filter apparatus according to claim 9, wherein the hemocompatible polymer coated carbon cores contained within the housing are coated with a semipermeable polymer, the semipermeable polymer comprised of material selected from the group consisting of cellulose, a methacrylate polymer, and combinations thereof. 14. A filter apparatus according to claim 13, wherein the semipermeable polymer coating is a methacrylate selected from the group consisting of polymethylmethacrylate (PMMA), polyethylmethacrylate (PEMA), polyhydroxyethyl-methacrylate (PHEMA) and combinations thereof. 15. A dual filter apparatus according to claim 9, wherein the chemotherapy agent is melphalan hydrochloride. 16. A dual filter apparatus according to claim 15, wherein an extraction efficiency of greater than 95% for removing melphalan hydrochloride from blood is achieved when blood flows through the dual filter apparatus at a rate of 250 ml/L or less. 17. A dual filter apparatus for removing small molecule chemotherapy agents from blood comprising: two filter apparatus arranged for fluid to flow through the two filter apparatus in parallel, wherein each filter of the two filter apparatus comprises a housing having an inlet and an outlet and an extraction media comprising hemocompatible polymer coated carbon cores contained within the housing, wherein the polymer coated carbon cores have an apparent density of less than 0.2 g/cc. 18. A dual filter apparatus according to claim 17, wherein the carbon cores have a pore volume of about 1.68 cc/g to about 2.19 cc/g. 19. A dual filter apparatus according to claim 17, wherein the apparent density of the carbon cores is about 0.19 g/cc to about 0.2 g/cc. 20. A dual filter apparatus according to claim 17, wherein the hemocompatible polymer coated carbon cores are coated with a semipermeable polymer coating comprising a methacrylate selected from the group consisting of polymethylmethacrylate (PMMA), polyethylmethacrylate (PEMA), polyhydroxyethyl-methacrylate (PHEMA) and combinations thereof.