Glass containers which may be sterilized for medical purposes, in particular for the storage of pharmaceutical or diagnostic products

• US 6,156,399 A
• Filed: 02/13/1998
• Issued: 12/05/2000
• Est. Priority Date: 02/18/1997
• Status: Expired due to Term

• Current Assignee: Schott AG (Carl-Zeiss-Stiftung)
• Original Assignee: Schott Glaswerke
• Inventors: Walther, Marten, Geiger, Andreas, Spallek, Michael
• Primary Examiner(s): DYE, RENA
• Application Number:
  US09/023,283
• Time in Patent Office: 1,026 Days
• Field of Search: 428/36.4, 428/428, 428/432, 428/34.6, 604/403, 604/411, 604/415, 604/19-21, 427/578, 427/579, 427/526, 427/585, 427/237
• US Class Current: 428/34.6
• CPC Class Codes: A61J 1/00 Containers specially adapted for medical or pharmaceutical purposes capsules or the like for oral use A61J3/07; specially adapted for surgical or diagnostic appliances or instruments A61B50/30; containers for radioactive substances G21F5/00
• CPC Class Codes: B65D 23/02 Linings or internal coatings
• CPC Class Codes: C03C 17/245 by deposition from the vapour phase
• CPC Class Codes: C03C 3/095 containing rare earths
• CPC Class Codes: Y10T 428/1317 Multilayer [continuous layer]

Abstract

The invention is a glass container which can be sterilized for medical purposes, including the storage of pharmaceutical or diagnostic products, further including solutions. The container is made from glass containing a stabilizer which inhibits the deleterious effects of high energy radiation, wherein the surface which is in direct contact with the product or solution has a coating that has a thickness of less than 400 nm and is formed from oxides or nitrides of the elements Si, Ti, Ta, AI or a mixture thereof.

Claims

1. A glass container that can be sterilized for medical purposes wherein the container comprises:

a surface which is to be in contact with a medical product, wherein the surface further comprises a coating;

wherein the coating is 1 to 400 nm in thickness and wherein the coating comprises at least one member of the group consisting of an oxide of Si, an oxide of Ti, an oxide of Ta, an oxide of Al, a nitride of Si, a nitride of Ti, a nitride of Ta, and a nitride of Al; and

a stabilizer for use in inhibiting the discoloring effects of high energy radiation.

2. The glass container according to claim 1 wherein the stabilizer is a lanthanide oxide.

3. The glass container according to claim 1 wherein the stabilizer comprises cerium.

4. The glass container according to claim 1 wherein the stabilizer is present in the glass in the amount of 0.3-1.5% by weight.

5. The glass container according to claim 1 wherein the coating is 10-200 nm in thickness.

6. The glass container according to claim 1 wherein the coating comprises SiO₂.

7. The glass container according to claim 1 wherein the coating is applied using a plasma chemical vapor deposition process.

8. The glass container according to claim 1 wherein the coating is applied using a plasma impulse chemical vapor deposition process.

9. The glass container according to claim 1 wherein the container is selected from the group comprising an injection bottle, a syringe body, and a glass cylinder.