Rapid prototyping and manufacturing process

• US 6,547,994 B1
• Filed: 11/12/1999
• Issued: 04/15/2003
• Est. Priority Date: 11/13/1998
• Status: Expired due to Fees

• Current Assignee: Therics Inc.
• Original Assignee: Therics Inc.
• Inventors: Monkhouse, Donald C., Kumar, Sandeep, Rowe, Charles W., Yoo, Jaedeok
• Primary Examiner(s): Tentoni, Leo B.
• Application Number:
  US09/439,179
• Time in Patent Office: 1,250 Days
• Field of Search: 264/40.1, 264/41, 264/113, 264/255, 264/308
• US Class Current: 264/40.1
• CPC Class Codes: B29C 64/165 using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
• CPC Class Codes: B29L 2031/753 Medical equipment; Accessories therefor bloodbags, medical bags B29L2031/7148; artificial eyes B29L2011/0008
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing

Abstract

A fabrication method to rapidly fabricate different prototypes of drug delivery systems, medical devices, pharmaceutical dosage forms, tissue scaffolds or other bioaffecting agents in small batches or individual forms using a computer-guided system to vary the composition and structure in order to optimize the product and the manufacturing process. The process is immediately scalable. An Expert System can be used with the method to recommend different compositions and designs of the prototypes, devices, dosage forms, tissue scaffold or other bioaffecting agents.

Claims

1. A method of rapidly fabricating prototypes of multiple medical devices, each having individually selected parameters, using a computer-guided system, comprising:

selecting the parameters of each of the devices to be fabricated;

designing prototypes of the devices using a statistically-based multifactorial computer-guided system design to vary composition and structure of the medical devices according to the parameters; and

manufacturing the medical devices in accordance with the selected parameters within a single manufacturing run.

2. The method of rapidly fabricating prototypes of medical devices, each having individually selected parameters, using computer-guided system of claim 1 wherein the computer-guided system interacts with an Expert System.

3. A method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, comprising:

selecting the parameters of the pharmaceutical dosage forms to be fabricated;

designing prototypes of the selected pharmaceutical dosage forms using a computer-guided manufacturing process; and

manufacturing the pharmaceutical dosage forms in accordance with the selected designs of the prototype within a single manufacturing run.

4. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 3 wherein manufacturing the pharmaceutical dosage forms include simultaneous fabrication of dosage forms having different release profiles.

5. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 3 wherein manufacturing the pharmaceutical dosage forms include simultaneous fabrication of dosage forms having different exterior sizes or geometry.

6. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 3 wherein the computer-guided system includes an Expert System.

7. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 6 wherein manufacturing the pharmaceutical dosage forms include simultaneous fabrication of dosage forms having varying API amounts.

8. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 6 wherein manufacturing the pharmaceutical dosage forms include simultaneous fabrication of dosage forms having different internal architecture.

9. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 3 wherein the manufacturing of the pharmaceutical dosage forms is carried out using solid free-form fabrication techniques.

10. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 3 wherein the manufacturing of the pharmaceutical dosage forms is carried out using three dimensional printing.

11. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 3, further including conducting long-term stability evaluations under controlled conditions.

12. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 11 wherein the long-term stability evaluations include using at least one sensitivity instrument to obtain early predictions of compound stability.

13. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 12 wherein the sensitivity instrument is an isothermal microcalorimeter.

14. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 3, further including fabrication of a clinical batch of the compound.

15. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 14 wherein the fabrication is complete in a few days.

16. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 3 wherein the computer-guided manufacturing process is automated, case-based, rule-based, or model-based.

17. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 3 wherein the computer-guided manufacturing process includes multiple databases.

18. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 3 wherein the computer-guided manufacturing process databases are users, machines, inactives, actives, solvents, and process and performance parameters.

19. The method of rapid prototyping and manufacturing of multiple pharmaceutical dosage forms, each having individually selected parameters, of claim 3 wherein the computer-guided manufacturing process is interactive.

20. A method of rapid formulation development of multiple tissue scaffolds using a computer-guided manufacturing process, comprising:

selecting physio-chemical parameters and physio-mechanical properties of the tissue scaffolds,

producing prototypes of the tissue scaffolds based on the physio-chemical parameters;

testing the physio-mechanical properties of the prototype; and

reproducing multiple prototypes for stability testing in a single manufacturing run.

21. The method of rapid formulation development of multiple tissue scaffolds using a computer-guided manufacturing process of claim 20 wherein the selecting of the physio-chemical parameters and physio-mechanical properties include the use of an Expert System.

22. The method of rapid formulation development of multiple tissue scaffolds using a computer-guided manufacturing process of claim 20 wherein the physio-chemical parameters include solubility, stability, reactive groups, pKa and volatility.