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1. WO1996008283 - INJECTION MEANS

Примечание: Текст, основанный на автоматизированных процессах оптического распознавания знаков. Для юридических целей просьба использовать вариант в формате PDF

THE CLAIMS defining the invention are as follows:

1. An injection device comprising a hollow body having a forward end and a rearward end, the forward end slidably receiving a hollow needle, the body providing a chamber between its forward end and its rearward end, the chamber being defined between a plug and a stop, the plug being sealingly and slidably received within the body adjacent the forward end, the stop being slidably and sealingly received within the body rearward of the plug, wherein a greater degree of effort must be applied to the stop than to the plug to effect slidable movement within the body, the rearward end of the body having a portion in which the stop is not sealingly received within the body, a drive element connected at one end to the plug and slidingly and sealingly received through the stop to extend from the rearward end of the body, a manipulation means provided on the other end of the drive element, the hollow interior of said needle being connected to the chamber through a flexible passageway extending between the inner end of the needle and the plug, said needle being connected to the plug or stop by a tensioning means, a means between the needle and body adapted to retain the needle at a first position at which it extends from the body and said means being adapted to be able to release the needle to allow the needle to move to a second position at which it is accommodated within the body, the movement between the first and second position being effected by the tensioning means.

2. An injection device as claimed at claim 1 wherein the drive element is flexible.

3. A injection device as claimed at claim 2 wherein the manipulation means comprises a tab or ring.

4. An injection device as claimed at claim 2 wherein the manipulation means comprises a slider slidably supported in the rearward portion of the body.

5. An injection device as claimed at anyone of the preceding claims wherein the drive means comprises a filament.

6. An injection device as claimed at anyone of the preceding claims wherein the rearmost end of the body is configured such that with movement of the plug into the rearward end portion, the stop is also capable of movement into the rearward portion.

7. An injection device as claimed at claim 6 wherein the internal face of the body is configured such that movement of the plug and/or stop into the rearward portion is irreversible.

8. An injection device as claimed at anyone of the preceding claims wherein the means comprises a frictional engagement between the needle and the body whereby the needle will become disengaged from said frictional engagement on the tensioning means providing a predetermined force to the needle.

9. . An injection device as claimed at claim 8 wherein the inner end of the needle is supported from the body by a support member which is frictionally engaged with the body.

10. An injection device as claimed at anyone of the preceding claims wherein the means comprises a latch which can positively engage the needle when in the first position and whereby the latch can be disengaged from the needle to permit the needle to move to the second position under the influence of the tensioning means.

11. An injection device as claimed at anyone of the preceding claims wherein the tensioning means comprises flexible tube which also forms the passageway.

12. An injection device as claimed at claim 11 wherein the tube is formed of a resiliently extendable material.

13. An injection device as claimed at claim 1 1 or 12 wherein the flexible tube comprises a tubular member having a resiliently extendible member incorporated into or around the walls of the tube.

14. An injection device as claimed at claim 11 wherein the tube is formed of a rigid material which is resilient and which has the form of a coiled or spiral spring.

15. An injection device as substantially herein described with reference to the accompanying drawings.