Punch biopsy device
A punch biopsy device is disclosed with an integrated tissue base cutting component. In an embodiment, the punch biopsy device includes a cutting blade with first and second arms operatively coupled to a handle. The punch biopsy device includes a prong flexible and integral to the cutting blade, the prong comprising top and lateral sharp edges configured to pierce and cut tissue, respectively. The prong is configured to be inserted into a body in a neutral position with the prong parallel with the first and second arms. The prong is configured to move to a position perpendicular to the first and second arms when the cutting blade is withdrawn to allow for the prong to catch and pierce the tissue. The prong is configured to cut the tissue while in the position perpendicular to the first and second arms when the cutting blade is rotated manually via the handle.
1. A punch biopsy device comprising:
a cutting blade with first and second arms operatively coupled to a handle, and the cutting blade being circular in shape; and
a prong flexible and integral to the cutting blade, the prong comprising a top sharp edge and lateral sharp edges configured to pierce and cut tissue, respectively, each of the lateral sharp edges extending from the cutting blade to the top sharp edge of the prong;
wherein the prong is configured to be inserted into a body in a neutral position with the prong parallel with the first and second arms;
wherein the prong is configured to move to a position perpendicular to the first and second arms as the cutting blade is pulled out of a patient to allow for the prong to catch and pierce the tissue; and
wherein the prong is configured to cut the tissue along a distance from the cutting blade to the top sharp edge of the prong while in the position perpendicular to the first and second arms when the cutting blade is rotated manually via the handle.
2. The punch biopsy device of claim 1 , wherein the prong is defined by two boundary cuts in the cutting blade, wherein each cut of the two cuts extends through a proximal edge of the cutting blade, each cut trending towards a distal edge of the cutting blade without extending through the distal edge of the cutting blade.
3. The punch biopsy device of claim 1 , wherein vertical edges of the first and second arms together with a distal boundary of the handle and a proximal edge of the cutting blade define hollow spaces therebetween.
4. The punch biopsy device of claim 1 , wherein the length of the prong is at least half of the diameter of the cutting blade and the prong is configured to reach at least a center of the tissue within the cutting blade.
5. The punch biopsy device of claim 1 , wherein the length of the prong is at least half of the diameter of the cutting blade, the prong is configured to reach at least a center of the tissue within the cutting blade, and the prong is configured to sever a complete base of the tissue within the cutting blade when the cutting blade is rotated 360 degrees around a vertical axis extending between the first and second arms and within the cutting blade.