Skin lesion exciser and skin-closure device therefor
View Patent ↗A device for excising tissue and closing a wound that results from excision of the tissue includes structure defining an aperture into which tissue to be excised is exposed. The device also includes a cutting member for excising the tissue, a closure member for closing the wound, and an actuatable drive member associated with the structure. The drive member is actuatable to move the cutting member relative to the aperture for excising the tissue that is exposed in the aperture and for closing the wound with the closure member.
1. A closure member for clamping tissue adjacent a wound, the closure member comprising:
a base portion including a first part and a second part,
first and second retaining portions operatively coupled to the base portion in a manner allowing movement of the first and second retaining portions toward each other and relative to the base portion,
first and second sets of tines respectively carried on the first and second retaining portions and extending toward each other, the first and second sets of tines defining an open condition in which the first and second sets of tines are spaced apart a sufficient distance to allow placement of the tissue therebetween and a closed condition in which the first and second sets of tines are moved toward each other to engage and clamp the tissue and close the wound, and
a sacrifice structure coupling the first part of the base portion to the second part of the base portion, the sacrifice structure comprising at least one of a weakened portion or a portion that becomes weakened over time, such that the sacrifice structure initially maintains the first and second sets of tines in the closed condition and then allows movement of the first part of the base portion relative to the second part to thereby allow removal of the first and second sets of tines from the tissue after sufficient healing of the wound.
2. The closure member of claim 1 , wherein the first retaining portion is operatively coupled to the first part of the base portion and the second retaining portion is operatively coupled to the second part of the base portion, the first and second parts of the base portion forming a planar body.
3. The closure member of claim 1 , wherein the sacrifice structure further comprises a degradable material.
4. The closure member of claim 1 , wherein the sacrifice structure further comprises at least one of: a fracture point, breakaway line or an area of reduced material thickness.
5. The closure member of claim 1 , wherein the first and second sets of tines and the sacrifice structure each extend along a direction generally parallel to a lengthwise extent of the base portion.
6. The closure member of claim 1 , wherein the sacrifice structure further comprises a first degradable portion, and further comprising a second degradable portion, the first and second degradable portions respectively positioned at opposite ends of the first and second sets of tines.
7. The closure member of claim 1 , wherein each of the first and second retaining portions further includes first and second ends, the first and second ends of each of the first and second retaining portions including respective yield zones permitting the first and second retaining portions to move toward each other to thereby move the first and second sets of tines to the closed condition.
8. The closure member of claim 1 , wherein the first and second sets of tines are located in a common plane with the first and second retaining portions.
9. The closure member of claim 1 , wherein the first and second sets of tines are positioned relative to one another so as to interdigitate when first and second sets of tines are in the closed condition.
10. The closure member of claim 1 , wherein the base portion includes first and second engagement channels, the first engagement channel selectively engaging the first retaining portion concurrently with the second engagement channel selectively engaging the second retaining portion to place the first and second sets of tines in the closed condition.
11. The closure member of claim 1 , wherein the base portion includes structure for engaging the first and second retaining portions to lock the first and second sets of tines in the closed condition.
12. The closure member of claim 1 , further comprising a second sacrifice structure coupling the first part of the base portion to the second part of the base portion, wherein an oblong opening is defined in the base portion and between the first and second sets of tines when the first and second set of tines are in the open condition, the oblong opening being adapted for accepting the tissue and having a length that is defined between the first and second sacrifice structures.