Auto-injector apparatus
First Claim
Patent Images
1. An auto-injector apparatus, comprising:
- a flexible container containing a liquid medicament;
a needle communicated with the container;
a housing, the container being received in the housing;
a pump disposed in the housing and positioned to engage the flexible container and expel the medicament from the container through the needle upon relative movement between the pump and the container, wherein the pump contains a roller;
a main drive spring operably associated with the needle to extend the needle from a first needle position wherein the needle is completely received in the housing to a second needle position wherein the needle protrudes from the housing; and
a retraction spring operably associated with the needle to retract the needle back into the housing after the medicament is expelled from the container.
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Abstract
An auto-injector apparatus includes a flexible container containing a liquid medicant, a needle communicated with a container, a housing with a container being received in the housing, a pump disposed in the housing and positioned to engage the flexible container and expel the medicant from the container through the needle upon relative movement between the pump and the container, and a main drive spring operably associated with the needle to extend the needle from a first needle position wherein the needle is completely received in the housing to a second needle position wherein the needle protrudes from the housing. The pump may be a roller.
74 Citations
17 Claims
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1. An auto-injector apparatus, comprising:
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a flexible container containing a liquid medicament; a needle communicated with the container; a housing, the container being received in the housing; a pump disposed in the housing and positioned to engage the flexible container and expel the medicament from the container through the needle upon relative movement between the pump and the container, wherein the pump contains a roller; a main drive spring operably associated with the needle to extend the needle from a first needle position wherein the needle is completely received in the housing to a second needle position wherein the needle protrudes from the housing; and a retraction spring operably associated with the needle to retract the needle back into the housing after the medicament is expelled from the container. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification