Safety injection device for a liquid or semi-solid composition
OwnerRoland Cherif-Cheikhinventor
Life of this patent
Estimating the term…
Abstract
In general, the invention features an injection device including a housing, the housing having proximal and distal ends and designed to contain a liquid or semi-solid drug composition; a hollow needle, the needle affixed to the distal end of the housing and extending longitudinally within the housing; a plunger, the plunger arranged to slide within the proximal end of the housing; and a hollow sleeve, the hollow sleeve arranged to cover the needle prior to injection and to retract into the housing during injection; wherein the device is designed such that when the sleeve is pressed against the subject, the sleeve retracts into the housing and the drug composition is delivered through the needle and into the subject.
Claims22
An injection device for injecting liquid or semi-solid composition into a subject, the device comprising:
- a hollow housing having a proximal and distal end, said distal end being configured to contain a liquid or semi-solid composition;
- a hollow needle, said needle affixed to the distal end of the housing and extending longitudinally within said housing;
- a plunger comprising a proximal end and a distal end, said plunger arranged to slide within the proximal end of the housing;
- and
- a hollow sleeve slidably connected to the distal end of the housing and arranged to cover the needle prior to injection and to retract into the housing during injection;
- wherein the device is designed such that when the sleeve is pressed against the subject, the sleeve retracts into the housing thereby allowing the needle to penetrate into the subject, and when the plunger is pushed into the housing, the composition is pushed from the housing through the needle and into the subject.
An injection device for injecting liquid or semi-solid composition into a subject, the device comprising:
- a hollow housing having a proximal end and a distal end;
- a cartridge or tube, said cartridge or tube comprising a distal end and a proximal end, said distal end closed by a septum cap and said proximal end closed by a plunger tip slidably arranged within the cartridge or tube;
- and a reservoir between said septum cap and said plunger tip;
- a hollow needle having a proximal end and a distal end, said needle affixed to the distal end of the housing and said proximal end of said needle extending longitudinally within said housing;
- a sleeve slidably connected to the distal end of the housing and arranged to cover the needle prior to injection and to retract into the housing during injection;
- wherein the device is configured such that when said cartridge or tube is inserted into said housing said septum cap forms an operable connection with said proximal end of said hollow needle, whereby when the plunger tip is urged into the cartridge or tube, the composition is urged from the cartridge or tube, through the needle and into the subject.
An injection device for injecting a liquid or semisolid composition into a subject, the device comprising:
- a reservoir having a proximal end and a distal end, said distal end being configured to contain a liquid or semi-solid composition;
- a hollow needle, said needle affixed to the distal end of the reservoir and extending longitudinally outside said reservoir;
- a plunger arranged to slide within the proximal end of the reservoir;
- and
- a plunger housing connected to said plunger, said plunger housing configured to cover said plunger, said reservoir and said needle after injection;
- wherein the device is configured such that when the plunger housing is urged around the reservoir, the plunger is urged into the reservoir, and the composition is urged from the reservoir through the needle and into the subject.
An injection device, substantially as hereinbefore described with reference to the drawings.
Dependencies are inferred from the claim text.