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Last Updated: February 7, 2023

Details for Patent: 9,439,985


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Summary for Patent: 9,439,985
Title:Compositions for radiolabeling diethylenetriaminepentaacetic acid (DTPA)-dextran
Abstract: The subject invention relates to the compositions for radiolabeling Diethylenetriaminepentaacetic Acid (DTPA)-dextran with Technetium-99m and for stabilizing the DTPA-dextran Cold Kit. The composition contains Stannous Chloride ions to reduce .sup.99mTc-pertechnetate, Ascorbic Acid to reduce stannic ions to stannous ions to maintain a reducing environment, .alpha.,.alpha.-Trehalose to add bulk and to stabilize the lyophilized composition without interfering with the radiochemical yield, and Glycine to transchelate Technetium-99m under highly acidic conditions to facilitate radiolabeling DTPA-dextran with high radiochemical purity. In addition, the invention pertains to methods for making and using the compositions. The reconstitution of the lyophilized composition by .sup.99mTc-pertechnetate, resulting in radiolabeled .sup.99mTc-DTPA-dextran in a composition between pH 3 to 4. This invention contains a Diluent vial, which when used will shift the pH to a moderately acidic pH, which would provide less pain on injection and ease-of-use to clinical practioners for adjusting its potency.
Inventor(s): Magneson; Gerald Ross (Powell, OH), Orahood; Richard Cushman (Delaware, OH)
Assignee: Navidea Biopharmaceuticals, Inc. (Dublin, OH)
Application Number:14/039,648
Patent Claim Types:
see list of patent claims
Composition; Compound;

Drugs Protected by US Patent 9,439,985

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Cardinal Health 414 LYMPHOSEEK KIT technetium tc-99m tilmanocept INJECTABLE;INJECTION 202207-001 Mar 13, 2013 RX Yes Yes See Plans and Pricing See Plans and Pricing Y See Plans and Pricing
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 9,439,985

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2010208624 See Plans and Pricing
Brazil PI1007487 See Plans and Pricing
Canada 2750230 See Plans and Pricing
China 102301429 See Plans and Pricing
European Patent Office 2392012 See Plans and Pricing
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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Serving leading biopharmaceutical companies globally:

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