Insertion device for providing fine needle aspiration and core biopsy

摘要

An insertion device for taking samples within a body. The insertion device includes a trigger housing, an outer sheath assembly, a sampling device, and a resilient member. The trigger housing includes an interior channel in which the resilient member is disposed to urge the outer sheath assembly away from a proximal end of the trigger housing. The outer sheath assembly is disposed within the interior channel of the trigger housing. The outer sheath assembly includes a body and an outer sheath attached to a distal end of the body. The sampling device is removably disposed within the outer sheath assembly and the trigger housing. The sampling device may be a removable biopsy needle assembly which is used to cock the insertion device. The removable biopsy needle assembly may be removed from the insertion device and be replaced by a needle assembly for fine needle aspiration.

主权项

1. An insertion device for taking samples within a body, the insertion device comprising:
a trigger housing comprising a proximal end, a distal end, and an interior channel; an outer sheath assembly, at least a portion of which is slidably disposed within the interior channel of the trigger housing, the outer sheath assembly comprising:
a body of the outer sheath assembly having a proximal end, a distal end, and an opening in the proximal end; andan outer sheath attached to the distal end of the body of the outer sheath assembly; and a trigger body disposed on the trigger housing; a resilient member disposed within the interior channel of the trigger housing, the resilient member configured to urge the outer sheath assembly away from the proximal end of the trigger housing when the trigger body is actuated; and a sampling assembly inserted into the outer sheath assembly, wherein:
the sampling assembly comprises at least one of a biopsy needle assembly and a fine needle aspiration (“FNA”) needle, wherein a portion of a proximal end of the biopsy needle assembly and a portion of a proximal end of the FNA needle are configured to obtain a sample,the biopsy needle assembly is a removable biopsy needle assembly comprising a proximal end, a distal end, and at least one key, and at least a portion of the removable biopsy needle assembly is removably disposed within the outer sheath assembly through the body of the outer sheath assembly, the opening in the proximal end of the body of the outer sheath assembly, and the outer sheath of the outer sheath assembly, andthe opening in the proximal end of the body of the outer sheath assembly comprises at least one keyway to allow the at least one key of the biopsy needle assembly to pass therethrough when the biopsy needle assembly is in a first rotational position and to block the at least one key from passing therethrough when the biopsy needle assembly is in a second rotational position.