A staple gun is adapted for driving out a frontmost staple of a staple strip and a frontmost press piece of a press piece strip simultaneously. The staple gun includes a casing unit adapted for receiving the staple strip and the press piece strip, a striker unit adapted for striking the frontmost staple and the frontmost press piece out of the casing unit through an exit opening, and a loading unit including a staple holder, a press piece pusher that is adapted to abut against a rear end of the press piece strip, and a press piece spring that is connected between the press piece pusher and the staple holder for maintaining contact between the press piece strip and a front portion of the casing unit.

A stapler includes a base, a magazine coupled to the base and configured to house staples, and a staple pusher assembly coupled with the magazine and operable to bias staples in the magazine toward a first end of the magazine where staples are driven out of the magazine. The staple pusher assembly includes a staple pusher defining a cavity, and a constant force spring having a first end coupled to the magazine and a second end that is coiled within the cavity in the staple pusher.

An anvil-attachable layer for use with a surgical stapler, or fastening instrument, wherein a proximal end portion of the layer is attached to a staple cartridge assembly, for example. The layer may be attached to the staple cartridge assembly by an adhesive, weld, or a staple-cartridge-based clamp, wherein the attachment is weak enough to allow the layer to pull away from the staple cartridge assembly with stapled tissue. Alternatively, the layer can include two or more lateral slits that define a connector region that can be cut by a knife of a surgical stapler to release the layer.

The present invention provides a hammer tacker. The hammer tacker includes a handle and a head portion. A ratio of a length l of the head portion to a length L of the hammer tacker is 1/6 to 1/4, a ratio of a width w of the head portion to the length L of the hammer tacker is over 1/2, and a ratio of a weight m of the head portion to a weight M of the hammer tacker is over 1/2. The handle includes a magnesium alloy housing that is die cast in one piece. A ratio of a weight n of the magnesium alloy housing to the weight M of the hammer tacker is over 0.3, and a thickness of the magnesium alloy housing is not less than 2 mm.

The present invention provides a multifunctional stapler including a housing, a nailing portion arranged at a front end of the housing, and a toggling device, a part of which being arranged inside the housing and a part of which extending to the outside of the housing. The nailing portion comprises: a staple feeding member arranged at a front end of the bottom of the housing, a staple feeding groove arranged on the surface at one side of the staple feeding member for receiving staples, a striking member, a part of which being inserted into the staple feeding groove, the toggling device controlling the striking member to strike the staples, and an adjusting device, a part of which being arranged outside the housing, for adjusting a depth of the staple feeding groove.

A nailing unit and a nail gun including the nailing unit includes a guide plate, a nail box to mount staple nails or straight nails, and a nail feeding plate slidably connected to a nail compartment; the nail box is fixedly connected to a guide plate at one end, and forms a nail outlet at the position of connection; the nail feeding plate can push staple nails or straight nails to the nail outlet; bumps are fixedly provided inboard of the guide plate lengthwise; two bumps and the nail outlet form a nail discharge groove for matching the nailing plate, and suit to different specifications of straight nails or staple nails.

A refill includes a peripheral wall defining a space capable of accommodating staples therein. The peripheral wall includes a bottom wall having a first side, a second side opposite to the first side, and a third side connecting end portions of the first side and the second side, a first side wall standing from the first side, a second side wall standing from the second side and opposing the first side wall, and a front wall positioned above the third side and connecting the first side wall and the second side wall. A first opening is formed on the first side wall and the front wall to extend across a boundary between the first side wall and the front wall.

A staple gun is provided, including: a main body, including a bottom side, and an abutting portion, a staple outlet and a notch which are disposed on the bottom side; a staple magazine, being withdrawably received within the main body; a lock mechanism, including a pressed member disposed on the staple magazine and having a restricting portion movable between a restricting position and a releasing position; wherein when the restricting portion is in the restricting position, the pressed member is located within the notch, the restricting portion is blocked with the abutting portion and the staple magazine is non-withdrawable from the main body; when the pressed member is pressed and moved toward an interior of the main body and the restricting portion is in the releasing position, the restricting portion is unlocked from the abutting portion and the staple magazine is withdrawable from the main body.

A spare magazine is adapted to be installed in a stapler, and includes a casing unit, a pivot member and a sliding carrier. The pivot member is pivotally disposed in the casing unit, and has a positioning pin. The sliding carrier has a carrier body slidably received in the casing unit, and a main track portion protruding from the carrier body, and having an island block and a surrounding wall that cooperatively define a main track. The sliding carrier is slidable relative to the casing unit between a closed position and a first open position. The positioning pin of the pivot member is inserted into the main track and is slidable in the main track along a heart-shaped route during the sliding movement of the sliding carrier.

A fastener driver includes a housing, a cylinder disposed within the housing, and a piston positioned and moveable within the cylinder. The fastener driver additionally includes a nosepiece at least partially defining a fastener driving track through which fasteners are driven, and a driver blade attached to the piston and moveable with the piston to drive the fasteners through the fastener driving track. The driver blade includes an axial guiding projection for guiding the driver blade within the nosepiece, and wherein the projection terminates before a distal end of the driver blade.