Abstract: An anastomosis protection device, including: a protective sleeve located inside a tubular tissue and positioned correspondingly to an anastomotic stoma; a first fixing assembly provided on an outer wall of the tubular tissue, wherein the first fixing assembly comprises at least one electromagnetic member; a power supply assembly electrically connected to the electromagnetic member, used for supplying power to the electromagnetic member, wherein the electromagnetic member is configured to become magnetic when powered on; and a second fixing assembly provided on an inner surface of the protective sleeve, wherein the second fixing assembly and the electromagnetic member of the first fixing assembly are relatively fixed by means of magnetic attraction. The device provides an extension and retraction space for the tissue.

Abstract: An anastomosis protection device is provided, including: a protective sleeve located inside a tubular tissue and positioned correspondingly to the anastomotic stoma; at least one fixing assembly, wherein the fixing assembly comprises at least one first fixing member and at least one second fixing member, wherein the first fixing member is provided on an outer wall of the tubular tissue, the second fixing member is provided on an inner surface of the protective sleeve and positioned correspondingly to the first fixing member, and the first fixing member and the second fixing member being relatively fixed by means of magnetic attraction. The device provides an extension and retraction space for the tissue.

Abstract: A knob assembly and a circular stapler are provided. The knob assembly includes a knob driver, a knob body, a first cooperating component and a second cooperating component. In a blocking state, the first cooperating component is linked with the second cooperating component; while in an unblocking state, the first cooperating component is not fixedly linked with the second cooperating component. One of the first cooperating component and the second cooperating component is provided at the knob driver and the other one is provided at the knob body. When the knob driver is rotated, if a rotating resistance to the knob body reaches a preset resistance value, the knob assembly cannot transmit larger torque, therefore the knob assembly is in a failure mode, the position of the anvil assembly relative to the cartridge remains unchanged, and the tissues will not be excessively compressed.

Abstract: A swing head mechanism and a medical stapler. The swing head mechanism comprises a rotating component, a swing head pull rod (93), and a housing. At least one first fitting member and at least one second fitting member are respectively provided on the outside of the rotating component and the inside of the housing. When the rotating component rotates relative to the housing until the first fitting member is opposite to the second fitting member, the first fitting member and the second fitting member form an elastic embedding fit. The swing head mechanism facilitates an operator to set different swing angles of a stapler head portion, and can avoid uncontrollable swing of the stapler head portion.

Abstract: A closure driving mechanism and a surgical stapler are provided. The closure driving mechanism includes a first slider, a locking member, a closure driver and a pushing block, the first slider is connected to the closure driver and includes a first fitting portion, the locking member includes a second fitting portion and a first lifting portion connected to each other, the pushing block includes a second lifting portion located under the first lifting portion. When the head assembly is closed, the closure driver is locked by the locking member fitting with the first slider. After the stapler is fired and the pushing block is lifted, the locking member separates from the first slider. Therefore, the closure driver can move distally to open the head assembly.

Abstract: A closure driving mechanism and a surgical stapler are provided. The closure driving mechanism includes a firing handle, a first slider, a locking member, a closure driver, and an actuating rod. The locking member fits with the first slider when the firing handle is actuated in an initial state and separates from the first slider after the stapler being fired. Therefore, the closure driver is locked by the fit cooperation between the first slider and the locking member after a head assembly is closed, to avoid the pulling sheet from moving distally during a firing process. After the firing process is fired, the locking member no longer locks the closure driver, therefore, the cartridge and the anvil can be opened automatically.

Abstract: The present disclosure provides a closure driving mechanism and a medical stapler including the same. The closure driving mechanism includes a driving part and a cylinder body, the driving part is connected with a closure pulling sheet of the stapler, and a cavity provided with a one-way valve is formed inside the cylinder body. When the driving part moves toward a distal side of the stapler, a volume of the cavity is decreased, the one-way valve is closed, and the driving part drives the closure pulling sheet to move distally, so as to open a head assembly of the stapler. Since the driving part is subjected to a resistance of compressed air in the cavity, a movement speed of the driving part is decreased, and the head assembly is opened slowly to prevent a force of opening the head assembly being too large to damage surrounding tissues.

Abstract: A handle assembly and a stapler including the same are provided. The handle assembly includes: a first handle component and a second handle, a first end of which is rotatably connected with the first handle component. The handle can be divided into a first handle component and a second handle, and a linkage state of the first handle component and the second handle can be controlled by a moving position of a slider which can be returned by action of a compression spring after the slider is free from a force exerted by the indicator, and a position of the compression spring is defined by a first limiting structure of the slider and a second limiting structure of the first handle component.

Abstract: The present invention discloses a staple cartridge assembly and a medical stapler using the staple cartridge assembly. A first jaw is provided with a limiting portion; a cutter is provided with a securing portion; when a firing block is located at a proximal end of a staple cartridge assembly, a cutting push rod drives the cutter and the firing block together to move; when the firing block is located at the distal end of the staple cartridge assembly, a driving mechanism drives the cutter and the first jaw to move relative to each other; and the limiting portion and the securing portion resist against each other to restrict the cutter from continuing moving toward the distal end of the staple cartridge assembly. As a result, doctors can be effectively prevented from closing the stapler when the replacement of the fired staple cartridge assembly is not completed.

Abstract: The present invention provides a tissue closure device, comprising: a first and a second clamping base which form a cavity there between for accommodating a tubular tissue; and a pouch assembly comprises: a tying band provided with a first free end and a second free end; a first tying band buckle which is arranged adjacent to the first free end in an initial state; a second tying band buckle arranged adjacent to the second free end in an initial state, wherein the second tying band buckle is buckled with the first tying band buckle after the first and the second clamping base are closed; and a first driving mechanism which enables the first and the second tying band buckle to move synchronously after the first and the second tying band buckle are buckled and then cooperate with the tying band to gather the tubular tissue into a pouch.

Abstract: The present invention provides a tissue closure device, comprising: a first clamping base and a second clamping base which may be opened/closed relatively and form an accommodation cavity after being closed; and a pouch assembly which may be driven to move in the accommodation cavity, wherein: the pouch assembly comprises a staple pusher, a pair of needle heads movably connected to the staple pusher, and a connection portion connected to the proximal ends of the pair of needle heads; and when the staple pusher moves from the proximal end to the distal end, the pair of needle heads pushes a tubular tissue located in the accommodation cavity to the distal end until the distal ends of the pair of needle heads are closed to close the tubular tissue into a purse string. A bundled purse string with a gathered center may be formed through the tissue closure device.

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 staple cartridge assembly comprises a staple cartridge, an anvil and a cutter, wherein the cutter comprises a first end and a second end; the staple cartridge assembly also comprises a rotation shaft and an auxiliary closing member which is connected with the rotation shaft; the staple cartridge assembly is also provided with a driving component capable of driving the rotation shaft to rotate; the driving component drives the rotation shaft to drive the auxiliary closing member to move in the process in which the staple cartridge assembly is converted from an original status to a closed status; when at least the staple cartridge assembly is in the closed status, one end surface of the auxiliary closing member abuts against the anvil to apply a force to the anvil for driving the anvil to be closed towards the staple cartridge.

Abstract: The present invention discloses a tissue closure device, a tissue closure assembly and a medical instrument. The tissue closure device comprises a base, a pressure plate cooperating with the base, and a staple pushing sheet. The pressure plate is rotatable relatively to the base. The tissue closure device further comprises a staple accommodating portion which is arranged at the distal end of the base and configured to accommodate a closure staple. The staple pushing sheet and the staple accommodating portion are configured to cooperatively drive the closure staple in the staple accommodating portion to deform. In the present invention, a bundled pouch with a gathered center is formed through the tissue closure device, so that risks of stoma fistula arising from subsequent anastomosis through a circular stapler are reduced; and the surgery cost is reduced.

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: The present invention provides a tissue closure device, comprising: a first clamping base and a second clamping base which may be opened/closed relatively and form an accommodation cavity after being closed; and a pouch assembly which may be driven to move in the accommodation cavity, wherein: the pouch assembly comprises a staple pusher, a pair of needle heads movably connected to the staple pusher, and a connection portion connected to the proximal ends of the pair of needle heads; and when the staple pusher moves from the proximal end to the distal end, the pair of needle heads pushes a tubular tissue located in the accommodation cavity to the distal end until the distal ends of the pair of needle heads are closed to close the tubular tissue into a purse string. A bundled purse string with a gathered center may be formed through the tissue closure device.

Abstract: A staple cartridge assembly comprises a connector, a cutter push rod and an elastic sheet, the elastic sheet having a first through groove and the cutter push rod being formed by laminating multiple sheets, wherein when the staple cartridge assembly is in an original status or a closed status, part of the cutter push rod is located in the first through groove, and the first through groove restricts detaching of the multiple sheets in a laminating direction of the multiple sheets; in a firing process of the staple cartridge assembly, the cutter push rod moves towards a distal end of the staple cartridge assembly to press the elastic sheet, such that the elastic sheet deforms and the cutter push rod is gradually detached from the first through groove; after the firing of the staple cartridge assembly is finished, the cutter push rod is detached from the first through groove.

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: 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.