Title:
Improved drug injection system with self-aspiration feature
Document Type and Number:
WIPO Patent Application WO1997040875
Kind Code:
A3
Abstract:
The present invention provides in part an improved drug injection system, comprising novel self-aspirating syringes, drug cartridge and novel needle assemblies. It is primarily intended for administering of local anesthetic by dentists, but it can be used equally well in medical and veterinary applications. In one aspect, the novel syringe is made lightweight, comfortable to hold and corrosion resistant. In another aspect, some novel changes in the design of the syringe reduce the possibility of transmitting an infection from the blood of one patient into the blood of another. Additionally, innovation in the design of needle assembly makes the syringe safe to use even without prior sterilization and at the same time eliminating the possibility of transmitting infection as the result of human error.
Inventors:
JANUS STAN (CA)
Application Number:
PCT/CA1997/000291
Publication Date:
March 19, 1998
Filing Date:
May 01, 1997
Export Citation:
Assignee:
JANUS STAN (CA)
International Classes:
A61M5/28; A61M5/24; A61M5/31; A61M5/32; (IPC1-7): A61M5/24
Domestic Patent References:
| WO1994021313A1 | 1994-09-29 |
Foreign References:
| EP0160711A1 | 1985-11-13 | |||
| EP0351541A1 | 1990-01-24 | |||
| DE2003079A1 | 1970-07-30 | |||
| DE2915338A1 | 1980-10-30 | |||
| DE9002310U1 | 1991-06-20 | |||
| US3583399A | 1971-06-08 | |||
| US4976701A | 1990-12-11 | |||
| US4184593A | 1980-01-22 | |||
| EP0364777A1 | 1990-04-25 |
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