Injection device for injection of liquid
First Claim
1. An injection device for injecting fluid from a fluid container equipped with a piston, comprising an actuating device having a rod-shaped driven member having a structured surface, a control button being movable in axial direction and a hollow cylindrical counter component having a structured internal sleeve, said structured sleeve engaging said structured surface of the rod-shaped driven member wherein said driven member is advanceable by said actuating device and being coaxially arranged in relation to said driven member, characterised in that the counter component is spread open by a spreader bushing allowing the driven member to shift freely therein in axial direction.
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Accused Products
Abstract
Injection device for injecting fluid from a fluid container equipped with a piston, comprising an actuating device having a rod-shaped driven member having a structured surface, a control button being movable in axial direction, and a hollow cylindrical counter component having a structured internal sleeve, said counter component matching the rod-shaped driven member and being coaxially arranged in relation to said driven member.
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Citations
9 Claims
- 1. An injection device for injecting fluid from a fluid container equipped with a piston, comprising an actuating device having a rod-shaped driven member having a structured surface, a control button being movable in axial direction and a hollow cylindrical counter component having a structured internal sleeve, said structured sleeve engaging said structured surface of the rod-shaped driven member wherein said driven member is advanceable by said actuating device and being coaxially arranged in relation to said driven member, characterised in that the counter component is spread open by a spreader bushing allowing the driven member to shift freely therein in axial direction.
- 4. An injection device for injecting fluid from a fluid container equipped with a piston, comprising an actuating device having a rod-shaped driven member having a structured surface, a control button being movable in axial direction and a hollow cylindrical counter component having a structured internal sleeve, said structured sleeve engaging said structured surface of the rod-shaped driven member wherein said driven member is advanceable by said actuating device and being coaxially arranged in relation to said driven member, characterised in that the counter component comprises two shell sections and is spread open by an axial movement of a spreader bushing with a proximal area and a distal area and tracks, thereby allowing the driven member to shift freely therein in an axial direction, said shell sections provided with cams running in the tracks of the spreader bushing, said tracks of the spreader bushing vertical in the proximal area and angled in the distal area.
Specification