Biopsy needle device

A medical needle shield apparatus comprising:

• a first housing including an actuating mechanism that actuates a needle cannula disposed therewith;
• and
• a second housing including a handle, the handle defining a cavity configured for receipt of the first housing such that the first housing is releasably engageable with the second housing, the needle cannula being disposed for slidable movement with the second housing such that the second housing is extensible from a retracted position to an extended position to enclose a distal end of the needle cannula,
• the second housing including a binding member having an aperture plate, the aperture plate defining binding surfaces that form an aperture configured for slidable receipt of the needle cannula between the retracted position and the extended position,
• the binding member including at least one drag inducing member such that the at least one drag inducing member engages the needle cannula during slidable receipt of the needle cannula to create a drag force with the needle cannula, the drag force facilitates rotation of the binding member relative to a longitudinal axis of the needle cannula such that the binding surfaces engage the needle cannula to prevent slidable movement of the needle cannula in the extended position of the second housing,
• wherein the binding member further includes a needle communicating surface extending therefrom such that the needle communicating surface is engageable with the needle cannula to prevent rotation of the binding member.

A medical needle shield apparatus comprising:

• a core including a spring biased actuating mechanism that actuates a needle cannula disposed therewith, the actuating mechanism having a slide that is mounted with the needle cannula to facilitate axial movement thereof, the needle cannula including an inner needle disposed for slidable movement with the needle cannula, the inner needle including a lateral recess disposed adjacent a distal end thereof;
• and
• a base including a handle, the handle defining a cavity configured for receipt of the first housing such that the first housing is releasably engageable with the second housing, the needle cannula being disposed for slidable movement with the second housing such that the second housing is extensible from a retracted position to an extended position to enclose a distal end of the needle cannula,
• the second housing including an inner housing that supports a binding member, the binding member having an aperture plate, the aperture plate defining binding surfaces that form an aperture configured for slidable receipt of the needle cannula between the retracted position and the extended position,
• the binding member including a pair of friction members that engage the needle cannula during slidable receipt of the needle cannula to create a drag force with the needle cannula, the drag force facilitates rotation of the binding member relative to a longitudinal axis of the needle cannula such that the binding surfaces engage the needle cannula to prevent slidable movement of the needle cannula in the extended position of the second housing,
• wherein the binding member further includes a needle communicating surface extending therefrom such that the needle communicating surface is engageable with the needle cannula to prevent rotation of the binding member.