Biopsy gun
AssigneePeter Pflugbeil GmbH
InventorFlorian KNEISSL
Life of this patent
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Abstract
A biopsy gun having a cannula and a stylet guided in the cannula comprises the following a housing, a cannula carriage for moving the cannula, a stylet carriage for moving the stylet, a tensioning grip for tensioning the cannula carriage and the stylet carriage from an initial position into a tensioning position, and an engaging member that is provided on the tensioning grip and has recesses adapted to engage with corresponding projections of the cannula carriage and the stylet carriage. The engaging member is rotatably attached to the tensioning grip and is biased by a spring against a contact surface of the housing.
Claims4
A biopsy gun having a cannula and a stylet guided in the cannula, the biopsy gun further comprising:
- a housing,
- a cannula carriage for moving the cannula,
- a stylet carriage for moving the stylet,
- wherein the cannula carriage and the stylet carriage can be tensioned by a tensioning grip from an initial position into a tensioning position against respective springs, wherein
- the stylet carriage has a stylet snap-in hook that is engaged with a stylet carriage holding surface of the housing when the stylet carriage is in its tensioning position, wherein
- the cannula carriage has a cannula snap-in hook that is engaged with a cannula carriage holding surface of the housing when the cannula carriage is in its tensioning position, wherein
- the housing has a first key by the operation of which the engagement of the stylet snap-in hook with the stylet carriage holding surface by contact with the first key is released, and a second key by the operation of which the engagement of the cannula snap-in hook with the cannula carriage holding surface is released by contact with the second key, wherein
- the first key has a lug projecting under the second key, so that an operation of the second key leads to an operation of the first key.
A biopsy gun having a cannula and a stylet guided in the cannula, the biopsy gun further comprising:
- a housing,
- a cannula carriage for moving the cannula, and
- a stylet carriage for moving the stylet,
- wherein the cannula carriage and the stylet carriage can be tensioned by a tensioning grip from a initial position into a tensioning position against respective springs, wherein
- the cannula carriage has a first cannula snap-in hook that is engaged with a first cannula carriage holding surface of the housing when the cannula carriage is in its tensioning position, and the cannula carriage has a second cannula snap-in hook that is in engagement with a second cannula carriage holding surface of the housing when the cannula carriage is in its tensioning position, wherein
- the stylet carriage has a release element that releases the engagement of the second cannula snap-in hook with the second cannula carriage holding surface of the housing when the stylet carriage has been released from its tensioned position and has moved into its initial position while the cannula carriage is still in its tension position, wherein
- the release element has a lug and the housing has a recess into which the lug of the release element is immersed in the initial position of the stylet carriage.
Dependencies are inferred from the claim text.