Abstract: An introducer accessory for being fitted with a circular stapler, the circular stapler comprising an anvil assembly and a staple cartridge assembly, the staple cartridge assembly including a staple cylinder (1) and a staple cartridge (2) being mutually fixed, wherein the introducer accessory at least comprises a sleeve portion (4) sleeved around a distal end of the circular stapler and an introducing portion (6) disposed at a distal end of the sleeve portion (4); a maximum outer diameter of the introducing portion (6) is equal to a minimum outer diameter of the sleeve portion (4); the introducing portion (6) is a spiral member, one end of a spiral wire of the spiral member is connected with a traction member and the other end is connected with the sleeve portion. A part of the introducer accessory or the whole introducer accessory can be pulled out from the circular stapler in one piece in the form of a strip.

Abstract: An introducer for being fitted with a circular stapler, is a flexible plastic member in a whole shape of conical with an inner cavity; the introducer has a proximal end and a distal end, outer diameter of the introducer is gradually increased from the distal end to the proximal end and a maximum outer diameter of the proximal end is less than or equal to a maximum outer diameter of a staple cartridge assembly; when pulled by an external force, the plastic member may be unwound spirally and finally forms a strip body capable of being disengaged from the circular stapler. The introducer provided by the present disclosure has the advantages that: as the maximum outer diameter of the introducer is approximately equal to the maximum outer diameter of the staple cartridge assembly, the process of introducing can be achieved without bad influence resulting from increasing the outer diameter of the circular stapler.

Abstract: A linear surgical stapler includes upper and lower jaws, an anvil and a cartridge respectively mounted on opposite far ends of the upper and lower jaws, a handle portion, a slider, and a button base relatively fixed to the slider. The lower jaw therein includes a staple drive bar and a cutter pusher. The slider is mounted with the button base. Each lateral side of the button base is pivotally associated with an operation button which is rotatable between a first status where an operating surface of the operation button is perpendicular to an axis of the linear surgical stapler, and a second status where the operating surface of the operation button is parallel to the axis of the linear surgical stapler. Since the operation buttons can be simultaneously collapsed adjacent to the jaws, the profile of the whole instrument and the packaging costs can be reduced.

Abstract: A linear surgical stapler includes an upper staple cartridge receiving half-section, a lower staple cartridge receiving half-section and a staple cartridge assembly. The staple cartridge assembly includes a cutting groove in which a reciprocating movement cutter is mounted. The cutter includes a bottom surface and a knife blade located at a far end of the cutter. The staple cartridge assembly includes a restricting member mounted therein and an elastic stopper. The elastic stopper abuts against the restricting member when the staple cartridge assembly is in an initial state. The restricting member breaks away from the staple cartridge assembly when the staple cartridge assembly is in a firing complete state, thereby preventing the cutter from sliding towards the far end of the staple cartridge. As a result, misfiring throughout the whole operation of the linear surgical stapler is prevented.

Abstract: The present invention provides an instrument for anorectal surgery, comprising a hollow main body, a suture junction disposed at a rear end of the main body and an inserting guider disposed at a front end of the main body. At an operating position, all or part of mucosa and tissues can get through the main body. At least one opening is made in the wall of the main body, and all or part of the mucosa and tissues can get into a hollow interior of the main body through the opening. Because of the openings on the wall of the main body, the present invention can be operated to perform the anorectal surgery of local and non-annular cutting, which facilitates a quick surgical operation, further allays the pain of the patients, and a better operation effect is obtained.

Abstract: A linear cutting stapler comprises: an upper jaw and a lower jaw (5) capable of closing or opening relative to each other. A staple cartridge (51) is disposed at a distal end of the lower jaw (5). The lower jaw (5) is U-shaped, and has a staple driving rod (3) and a blade driving rod (4) slidably disposed therein. The linear cutting stapler further comprises a safety mechanism. The safety mechanism comprises an engagement member. A notch fitting the engagement member is disposed on a bottom surface of the staple driving rod (3). The safety mechanism further comprises a floating block (1). The floating block (1) may perform longitudinal displacement in the lower jaw (5). When the floating block (1) is pressed against the staple cartridge (51) or an anvil (6), a top end of the engagement member is driven to perform longitudinal displacement, so that the engagement member is separated from the notch. The linear cutting stapler has a simple structure, is easy to be fabricated, and is safe and reliable.

Abstract: A linear cutting stapler comprises: an upper jaw and a lower jaw (1) capable of closing or opening relative to each other. A staple cartridge (2) is disposed at a distal end of the lower jaw (1). The lower jaw (1) has a U shape, in which a striker (5) and a pushing rod are slidably disposed. The linear cutting stapler further comprises a safety mechanism. The safety mechanism comprises a safety piece (4), and an opening (52) opened on the striker (5) and for receiving the safety piece. The installation or removal of the staple cartridge (2) may drive the safety piece (4) to move in a direction perpendicular to the axis of the lower jaw (1), so that the safety piece (4) is disengaged from or engaged with the opening (52) of the striker (5). The linear cutting stapler has a simple structure, can be easily fabricated, and is safe and reliable.

Abstract: A rotary cutter head for a surgical stapling instrument includes a staple cartridge, an annular cutter, a staple-pushing seat and a staple chamber. The staple-pushing seat and the annular cutter are connected by a bearing structure and provided with guide projections. The inner wall of the staple cartridge or the outboard of the expand-stopping tube is integral injection molded with a metal cylinder insert, on which is provided with a forward helix track and a backward track mutually independent and communicated with each other. The guide projections are mated with the two guide tracks and guiding the annular cutter to move along a helical path.

Abstract: A circular stapler with an automatic safety mechanism comprises a stapler body, a stapler head, an actuating mechanism and a transmission adjusting mechanism; wherein the actuating mechanism comprises a handle and a handle coat, the transmission adjusting mechanism comprises a screw rod and an adjusting knob; a stopper is disposed either inside said handle or said handle coat; a safety rod and a pulling sheet are further provided, the safety rod has a safety block on one end and has a protruding block and a pin hole as its middle portion, a cylindrical pin is inserted into the pin hole so as to get the safety rod to be pivotally connected with the stapler body; the pulling sheet has a rear portion mounted on the screw rod and has a pulling hook at its front portion, the pulling hook hooks with the protruding block.

Abstract: A surgical purse-string suturing instrument comprises an upper jaw, jaw handle, grip, and a lower jaw, jaw handle, grip, wherein the jaws (1) and the corresponding jaw handles (3) are arranged in shape of “L” so that the doctor is able to clearly observe the placement of the tissues on the jaws (1) directly from one side of the jaw handle (3); in order to adapt to tissues of different widths, gaps (7), peaks (8) and valleys (9), or alternately arranged teeth (10) are disposed on the surfaces of the staple cartridges (2); by employing limiting rods (11) and anti-exceeding boss (13), the exceeding of tissues during the process of purse-string suturing can be effectively prevented so that the sutured purse-string has a complete shape.

Abstract: The present invention provides a rotatable stapling head of a surgical stapler, which comprises a staple cartridge (1), a staple driver (2), a scalpel (3), a compression rod (4), a staple casing (5) and a rotating assembly. The above parts constitute a rotating forward mechanism which can rotatablely forward the scalpel therein.

Abstract: A circular stapler with an automatic safety mechanism comprises a stapler body, a stapler head, an actuating mechanism and a transmission adjusting mechanism; wherein the actuating mechanism comprises a handle and a handle coat, the transmission adjusting mechanism comprises a screw rod and an adjusting knob; a stopper is disposed either inside said handle or said handle coat; a safety rod and a pulling sheet are further provided, the safety rod has a safety block on one end and has a protruding block and a pin hole as its middle portion, a cylindrical pin is inserted into the pin hole so as to get the safety rod to be pivotally connected with the stapler body; the pulling sheet has a rear portion mounted on the screw rod and has a pulling hook at its front portion, the pulling hook hooks with the protruding block.