Four-spike stapler for skin wound closure
View Patent ↗The present invention discloses a medical stapler designed for efficient wound closure, utilizing a four-legged staple assembly. The staple assembly comprises four symmetrically positioned legs—two longer or standard legs for engaging deeper tissue layers and two shorter legs for securing superficial skin layers—each configured to penetrate tissue at an angle of approximately 90 degrees±15 degrees relative to the tissue surface. The staple is formed as a continuous, one-piece biocompatible metallic structure with a central apex that uniformly distributes compression forces across the wound site. This design enables simultaneous closure of multiple tissue depths in a single deployment, enhancing surgical efficiency. The symmetrical leg spacing ensures even tissue engagement, while the configuration resists rotational movement within tissue, improving post-deployment stability. Additionally, the design minimizes the risk of skin overlap, puckering, and tissue misalignment, supporting a more aesthetically pleasing wound closure.
1 . A medical stapler for wound closure, comprising:
a four-legged staple assembly, wherein each staple comprises:
two longer legs and two shorter legs, the longer legs being configured to penetrate and hold deeper tissue layers, and the shorter legs being adapted for superficial skin engagement;
wherein the four legs are symmetrically positioned and spaced equidistantly around a central apex;
wherein each leg is configured to penetrate the tissue at an angle of approximately 90 degrees #15 degrees relative to the tissue surface.
2 . The medical stapler of claim 1 , wherein the central apex is formed in a Square Arch configuration a shape being configured to uniformly distribute compression forces across the wound site, thereby promoting optimal tissue approximation and healing.
3 . The medical stapler of claim 1 , the central apex forms a continuous, one-piece biocompatible metallic structure with no joints or seams, the central apex being shaped in a square arch configuration.
4 . The medical stapler of claim 1 , wherein the four legs of the staple assembly include two longer legs adapted for engaging deeper tissue layers and two shorter legs adapted for engaging superficial skin layers, thereby enabling secure multi-depth closure and improved skin edge approximation.
5 . The medical stapler of claim 1 , wherein the staple assembly is adapted to achieve simultaneous closure of both superficial and subdermal tissue layers in a single deployment.
6 . The medical stapler of claim 1 , wherein the staple assembly is configured to resist rotation within the skin after deployment, maintaining stable tissue approximation and minimizing misalignment.
7 . The medical stapler of claim 1 , wherein the spacing between adjacent legs of the staple assembly is uniform, ensuring even penetration of the tissue and consistent closure across the wound site.
8 . A surgical staple for wound closure, comprising:
an arch portion configured to span across a wound site;
a first pair of legs extending downward from opposite lateral ends of the arch portion, each leg of the first pair having a first length;
a second pair of legs extending downward from a central region of the arch portion between the first pair of legs, each leg of the second pair having a second length shorter than the first length;
wherein the four legs are configured to be driven into tissue using an anvil to facilitate symmetric deployment; and
wherein each of the four legs is oriented at an angle within +15° of perpendicular relative to the surface of the tissue.