Surgical device for the collection of soft tissue
View Patent ↗A handheld biopsy device is provided for the collection of soft tissue samples from a surgical patient. In a preferred embodiment, the biopsy device comprises a handpiece, a fluid collection system, and a power transmission source. The handpiece is configured for grasping by a single hand, and being independently manipulatable by hand for movement of the instrument toward and away from the patient. An elongated piercer extends from the distal end of the handpiece. The piercer has a sharpened distal end for entering the tissue and a port located proximal to the sharpened distal end for receiving a portion of tissue mass. An elongated cutter is disposed coaxially relative to a piercer lumen of the piercer. A distal blade of the cutter slides distally past the port of the piercer to severe the tissue portion drawn into the port by vacuum. The cutter is retracted to a most proximal position for removal of the tissue portion from a cutter lumen of the cutter. The handpiece further comprises a holster for detachably connecting a cutter rotational transmission and a cutter axial transmission to the power transmission source.
1. A biopsy device comprising:
a probe assembly and a holster, the probe assembly being detachably connected to the holster such that the probe assembly and holster together define a handpiece shaped and configured for grasping by a single hand;
wherein the probe assembly comprises an elongated piercer extending distally from the handpiece, said piercer having a piercer lumen, a closed, sharpened distal end for piercing tissue, and a port proximal to said sharpened distal end for receiving a portion of a tissue mass;
the probe assembly further comprising an elongated cutter having a distal end, a proximal end, and a cutter lumen therethrough, said cutter being disposed coaxially and slidably relative to said piercer, said cutter distal end for cutting a portion of tissue protruding into said port of said piercer when said cutter moves distally past said port;
at least two flexible tubes extending from the probe assembly;
a first motor disposed within the holster for providing motion of the elongated cutter;
a second motor disposed within the holster for providing translation of the elongated cutter.
2. The device of claim 1 wherein the first motor provides rotation of said elongated cutter.
3. The device of claim 2 wherein said first motor comprises an electric motor.
4. The device of claim 1 wherein the second motor comprises an electric motor.
5. The device of claim 1 wherein the piercer is offset with respect to the handpiece.