Disclosed are pliers and related methods for punching a hole in a non-flat material without distorting the material. Such pliers may comprise a first member having a first handle and a first jaw, and a second member having a second handle and a second jaw. The first and second members are attached at a connection point to permit pivoting in response to a squeezing force on the handles. The first jaw comprises a punch tip to be received by the second jaw, where the punch tip may have an angled distal end truncating a cross-section of the punch tip. The second jaw comprises a shaped edge facing the punch tip and extending along a length of the second jaw, the shaped edge having substantially the same shape as the non-flat material and comprising an opening having substantially the same shape as the cross-section of the punch tip and to receive the tip therein.

A handheld punching device includes an operating grip pivotably connected to a holding grip to have a loading end turned in an up-down direction, a transmitting lever pivotably connected to the loading end to transmit a torque to turn a driving end, a punching seat pivotably connected to the holding grip and defining a cutting space for receiving a workpiece to be punched, and a plurality of punch units disposed between the driving end and the punching seat and each having a punch head movably and fittingly disposed in the punching seat along a straight path in the up-down direction, and a press head in abutting engagement with the driving end to be moved by the torque and to drive movement of the punch head through the cutting space for creating a hole in the workpiece.

A method of making a side-to-side anastomosis includes making first and second holes through a first vessel, and second vessel, respectively, by receiving a jaw of a punch tool into exposed ends of the respective vessels, and then moving a punch tool toward the jaw and through the wall of the vessel. The vessels are joined with an elongate eyelet with a passage that matches a shape of the oval first and second holes. The long axes of the oval holes are oriented parallel to a longitudinal axes of the respective vessels.

A handheld punching device includes an operating grip pivotably connected to a holding grip to have a loading end turned in an up-down direction, a transmitting lever pivotably connected to the loading end to transmit a torque to turn a driving end, a punching seat pivotably connected to the holding grip and defining a cutting space for receiving a workpiece to be punched, and a plurality of punch units disposed between the driving end and the punching seat and each having a punch head movably and fittingly disposed in the punching seat along a straight path in the up-down direction, and a press head in abutting engagement with the driving end to be moved by the torque and to drive movement of the punch head through the cutting space for creating a hole in the workpiece.

A bevel stud punch attachment comprising a cylindrical head with an inner lip coupled to a punch to puncture a hole through a preselected material when a force is applied to drive the punch to penetrate the cylindrical head with the inner lip and the hole having a concave rim around an outer edge of the hole created by the inner lip. A method of using the bevel stud punch attachment to puncture a hole with a concave rim, comprising positioning the preselected material between the cylindrical head with the inner lip and the punch and applying a force to drive the punch through the preselected material and into the cylindrical head with the inner lip.

A device for punching one or more holes in a material is disclosed. The device can include a body, a fixed handle attached to the body, and a moveable handle attached to the body. The device can further include a cutting die and an adjustable depth gauge attached to the body. The adjustable depth gauge can be moveable relative to the body of the device.

A method of making a side-to-side anastomosis includes making first and second holes through a first vessel, and second vessel, respectively, by receiving a jaw of a punch tool into exposed ends of the respective vessels, and then moving a punch tool toward the jaw and through the wall of the vessel. The vessels are joined with an elongate eyelet with a passage that matches a shape of the oval first and second holes. The long axes of the oval holes are oriented parallel to a longitudinal axes of the respective vessels.

A turret punch includes a first body, a second body, a third body, a pin, a first resilient member, a turret, function members, a second resilient member and a connector. The second rail portion of the third body is linearly movable along the first rail portion of the first body. When operating the first and second bodies, the function member that is located corresponding to the first function end moves linearly so as to be engaged with or to be disengaged from the first function end of the first body, such that the holes are punched along a straight line.

A hole punch assembly includes two locating features for forming holes in a trim piece overlying a metal sheet with ridges formed therein. One locating feature is a groove into which one of the ridges is insertable. The other locating feature is a portion of the outer surface configured such that, when one of the ridges in in the groove and the trim piece contacts the portion of the outer surface, a punch is positioned to form a hole in the trim piece.

Punch jaws are provided and are configured to punch holes and/or recesses in parts made of sheet metal. The punch jaws include first and second jaws pivotally connected to each other around a pivoting axis to pivot in a pivoting plane. A work region is formed by a punch ram on the first pivoting jaw and a punch opening on the second pivoting jaw. The punch ram carries a punch sleeve having a punch edge on its circumference. The punch sleeve moves in a side view, in which the pivoting axis is punctiform, along a circular line, a center point of which is formed by the pivoting axis, during its pivoting motion. The punch sleeve is introduced into the punch opening in a side view initially penetrates the punch opening with a front region the punch edge referred to the pivoting direction. The front region is in this side view formed on the side of the pivoting axis of the circular line with respect to a pivoting circle, along which the punch sleeve moves.