Injection device with extraction mechanism
First Claim
Patent Images
1. An injection device comprising:
- a needle support;
an injection needle joined to the needle support, the injection needle having a main portion with a free end, the free end being spaced from the needle support; and
an extraction mechanism for extracting the injection needle, the extraction mechanism including;
a base permanently articulated with the needle support, the base being movable between an inactive position of the extraction mechanism and an active position of the extraction mechanism;
a pushing member movable relative to the base between a first position in which the needle is extended and a second position in which the needle is retracted with the free end received in the pushing member; and
an engagement member configured to releasably hold the extraction mechanism in the active position,wherein the pushing member lies along an axis of the main portion of the injection needle when the extraction mechanism is in the active position,wherein a hollow portion is defined in the base, the hollow portion constituting a passage for allowing movement of the pushing member,wherein the pushing member is disposed in the passage such that the pushing member is slidably movable between the first position and the second position, andwherein the base is connected to the needle support by a joint such that the base is rotatable relative to the needle support about an articulation axis, the articulation axis being perpendicular to the injection needle.
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Abstract
An injection device comprises: a needle support; an injection needle which is fixedly joined to the needle support and which has a free end which is arranged with spacing from the needle support; and a mechanism for extracting the injection needle, comprising a base and a pushing member which can be moved relative to the base between a position in which the needle is used and a position in which the needle is extracted. The base is permanently connected to the needle support and can be moved relative to the needle support between an inactive position of the extraction mechanism and an active position of the extraction mechanism.
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Citations
19 Claims
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1. An injection device comprising:
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a needle support; an injection needle joined to the needle support, the injection needle having a main portion with a free end, the free end being spaced from the needle support; and an extraction mechanism for extracting the injection needle, the extraction mechanism including; a base permanently articulated with the needle support, the base being movable between an inactive position of the extraction mechanism and an active position of the extraction mechanism; a pushing member movable relative to the base between a first position in which the needle is extended and a second position in which the needle is retracted with the free end received in the pushing member; and an engagement member configured to releasably hold the extraction mechanism in the active position, wherein the pushing member lies along an axis of the main portion of the injection needle when the extraction mechanism is in the active position, wherein a hollow portion is defined in the base, the hollow portion constituting a passage for allowing movement of the pushing member, wherein the pushing member is disposed in the passage such that the pushing member is slidably movable between the first position and the second position, and wherein the base is connected to the needle support by a joint such that the base is rotatable relative to the needle support about an articulation axis, the articulation axis being perpendicular to the injection needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An injection device comprising:
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a needle support; an injection needle joined to the needle support, the injection needle having a main portion with a free end, the free end being spaced from the needle support; and an extraction mechanism for extracting the injection needle, the extraction mechanism including; a base connected to the needle support, the base being movable relative to the needle support between an inactive position of the extraction mechanism and an active position of the extraction mechanism; a pushing member movable relative to the base between a first position in which the needle is extended and a second position in which the needle is retracted with the free end received in the pushing member; and wherein a longitudinal axis of the pushing member is parallel to a longitudinal axis of the main portion of the injection needle when the extraction mechanism is in the active position, wherein a hollow portion is defined in the base, the hollow portion constituting a passage for allowing movement of the pushing member, wherein the pushing member is disposed in the passage such that the pushing member is slidably movable between the first position and the second position, and wherein the base is connected to the needle support by a joint such that the base is rotatable relative to the needle support about an articulation axis, the articulation axis being perpendicular to the injection needle. - View Dependent Claims (16, 17, 18, 19)
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Specification