Abstract: A stapling head assembly includes a cartridge support having a proximal end, a connecting tube, a cutter pushing rod, and a lockout mechanism. The tube includes a distal end connected to the proximal end. The rod is movably set inside the tube. The mechanism is connected to the tube, and includes a pressing block and a pushing block. The pressing block is used to lock the proximal end to prevent the rod from moving before the assembly is used. The pressing block is rotatable between a first position and a second position relative to the tube. The pushing block is used to push the pressing block to rotate from the first position towards the second position. The pushing block is located at one side of the pressing block, and is movable between a third position and a fourth position relative to the tube along a longitudinal direction.

Abstract: A suturing and cutting apparatus for endoscopic surgery includes a body, a head portion, and a transmission mechanism, the head portion, is connected rotatably to a distal end of the body relative to the axial direction of the body by the transmission mechanism. The transmission mechanism includes an operating rod, a connecting assembly and a gear transmission mechanism. The connecting assembly includes a first conversion component which is set between the body and the head portion and can rotate relative to the axial direction of the body. The aspects disclosed herein allow and facilitate in the performance of the endoscopic surgery.

Abstract: A circular stapler and a staple head assembly thereof are disclosed. The staple head assembly comprises a staple barrel assembly and an anvil assembly. The anvil assembly includes an anvil ring and an anvil shaft which are fixedly connected to each other, where the anvil shaft is capable of sliding along the longitudinal direction in an expansion-stopping tube. The staple barrel assembly includes a staple barrel, a staple pusher piece arranged within the staple barrel and a staple cartridge fixed at a distal end of the staple barrel.

Abstract: A circular stapler and a staple head assembly thereof are disclosed. The staple head assembly comprises a staple barrel assembly and an anvil assembly. The anvil assembly includes an anvil ring and an anvil shaft which are fixedly connected to each other, where the anvil shaft is capable of sliding along the longitudinal direction in an anti-expansion tube. The staple barrel assembly includes a staple barrel, a staple pusher piece arranged within the staple barrel and a staple cartridge fixed at a distal end of the staple barrel.

Abstract: A linear cutting stapler comprising an upper jaw and a lower jaw capable of being closed or open relative to each other. The upper jaw includes an anvil and the lower jaw includes a staple cartridge frame. The proximal end of the anvil is provided with a positioning pin or a pin slot, and the proximal end of the staple cartridge frame is configured with a pin slot or a positioning pin. Wherein, the pin slot is engaged with said positioning pin, and the positioning pin comprises a first slot position and a second slot position relative to the pin slot. After the upper jaw and the lower jaw are open, the positioning pin is held in the second slot position, by this time the operator can lift up the whole stapler by holding upper jaw or lower jaw, which is convenient for re-locating the tissue and simplifies the operations.

Abstract: A linear stapling and severing apparatus comprises upper and lower jaws, the lower jaw comprises a staple cartridge holder, a staple cartridge is arranged on the staple cartridge holder in a detachable way, and a cutter us movably arranged inside the staple cartridge. The apparatus also comprises a safety piece installed on the staple cartridge in an upper-and-down movable way. The cutter comprises a slot and a butting part. When the cutter is located are a near end of the staple cartridge and in a non-locked state, the safety piece prevents the safety piece from entering the slot. The cutter can complete a stapling and severing process. When the cutter goes back to the near end it is in a locked state, the safety piece is located at a second position that is clamped inside the slot to restrict movement of the cutter.

Abstract: A stapling head assembly of a suturing and cutting apparatus for endoscopic surgery includes a cartridge, a cartridge support detachably connected to the cartridge, an actuating block including an unlocking component set movably in the cartridge, a cutter, and a lockout mechanism. The cutter is adapted to move longitudinally along the cartridge, between a first position and a second position. The mechanism includes a lockout block set in said cartridge support and transversely movable with respect to the support between third and fourth positions, and a flexible component set between the support and the lockout block and actuating the lockout block to move from the third to the fourth positions. When the flexible component is under compression, the cutter can move from the first to the second positions. After the actuating block is actuated, the lockout block moves to the fourth position under action of the flexible component.

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: The present invention discloses a linear cutting stapler, comprising an upper jaw and a lower jaw capable of being closed or opened relative to each other, said upper jaw includes an anvil and said lower jaw includes a staple cartridge frame; a cutter is moveably arranged in said staple cartridge which is detachably arranged on said staple cartridge frame.

Abstract: An introducer accessory for being fitted with a circular stapler is disclosed, and pertains to the technical field of medical instrument. The introducer accessory at least comprises a sleeve portion sleeved around a distal end of the circular stapler and an introducing portion disposed at a distal end of the sleeve portion. And the introducing portion comprises a spiral member in a conical shape with a cavity and a traction member, the traction member extends in the cavity of spiral member to connect with the distal end of the spiral member such that when the traction member is pulled by an external force, the distal end of the spiral member is pulled out by the traction member through the cavity which causes the spiral member to be unwound internally and finally to form a strip body to withdraw through the circular stapler. Thus, the withdrawing process of introducer accessory can avoid injury to patient during surgery.

Abstract: Disclosed is a linear cutting stapler comprising an upper jaw and a lower jaw capable of being closed or open relative to each other. Said upper jaw includes an anvil and said lower jaw includes a staple cartridge frame. The proximal end of said anvil is provided with a positioning pin, and the proximal end of said staple cartridge frame is configured with a pin slot; or, the proximal end of said staple cartridge frame is provided with a positioning pin, and the proximal end of said anvil is configured with a pin slot. Wherein, said pin slot comprises a first slot position and a second slot position which are engaged with said positioning pin, and, said first slot position and said second slot position are partially combined and arranged in an angle with each other. When said upper jaw and said lower jaw rotate from closed state to open state with said positioning pin as a support shaft, said positioning pin actively rotates from said first slot position to said second slot position in which it gets stuck.

Abstract: A linear suturing and cutting device, comprising an upper jaw and a lower jaw capable of being closed or opened relative to each other; said upper jaw includes an anvil; said lower jaw includes a staple cartridge frame, said staple cartridge frame is detachably provided with a staple cartridge, said staple cartridge is arranged with cartridge holes inside which run throughout said staple cartridge to its working surface, and staple pushers correspondingly disposed inside said cartridge holes and being capable of sliding relative to said cartridge holes, said staple cartridge frame is slidably provided with a firing piece inside, said firing piece is configured with a wedge-shape staple pushing member capable of driving said staple pushers to slide in said cartridge holes, said cartridge holes are configured to be inclined towards the distal end of said staple cartridge.

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: 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 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.