| 摘要 |
<p>A self-destroying hypodermic syringe of the disposable kind comprising a cylinder (1) which carries a cannula (2) at one end. In the cylinder a plunger (3) with a plunger rod (4) is provided, and in connection with said plunger or plunger rod a breaking means (6) is provided to brake after the first time the syringe is used. Breaking means (6) consists of a member (10,11,12) with at least one cam follower (13) cooperating with a cam or coulisse (14) extending obliquely in relation to the syringe axis in another member (15). The cam or coulisse at one end joins an axially extending groove (16) which is open towards one end of member (15). A stop for the cam follower is provided at the cam end opposed to the connection with groove (16). In connection with the plunger rod or the latter and the plunger a freely turnable member (7), e. g. a sphere (8) is provided to run freely in a bearing brass (9).</p> |
