187 results about "Cutting stapler" patented technology

The invention relates to an anti-skid cartridge with different staple heights. The anti-skid cartridge is used for surgical staplers and especially used with tubular staplers, intracavity cutting staplers, linear staplers and linear cutting staplers. The anti-skid cartridge comprises an arc tissue contact face, staple slots and suture staples. The arc tissue contact face is provided with the staple slots; the suture staples unequal in height are disposed in the staple slots. The arc tissue contact face is further provided with a plurality of tissue anti-skid projections. The anti-skid cartridge is provided with a cutting path. Cartridge positioning fasteners are arranged on two sides of a cartridge body; spring snap sheet cavities are arranged in the near end of the cartridge body.

The invention relates to a surgical linear stapler with an automatic cutter knife changing function. Cutter knives mounted in a knife bin in a stapling bin component are divided into an initial assembly cutter knife and multiple standby cutter knives, after cutting operation of the initial assembly cutter knife is completed, the initial assembly cutter knife is remounted in a knife slot of the knife bin, the initial assembly cutter knife is taken away from a knife rest, meanwhile the first standby cutter knife adjacent to the initial assembly cutter knife is mounted on the knife rest by the knife bin, actions of changing the cutter knifes are completed sequentially, the stapling bin is simple in structure and low in cost, knife edges of the cutter edges during surgeries can be kept sharp in every use, tasks of cutting various tissue are executed smoothly, and even technical effect of cutting stapler nails previously stapled on the tissue is realized.

The invention discloses an anti-misoperation type cutting stapler which comprises a nail pressing seat, a nail bin, a bracket and a nail pushing device, wherein a plurality of suturing nails are arranged inside the nail bin; the bracket takes a supporting effect on an assembly; the nail pushing device is used for pushing the suturing nails in the nail bin; the nail pushing device comprises a pushing plate, a nail pushing sledge and a nail pushing particle; the nail pushing particle inside the nail bin directly acts on the suturing nails; the nail pushing sledge is initially positioned in an initial position of the nail bin; the front part of the nail pushing sledge pushes the nail pushing particle and a hasp bridged with the front end of the pushing plate is arranged at the rear part of the nail pushing sledge; the rear end of the pushing plate is connected with a sliding block; a locking boss is formed in the front part of the pushing plate; the bracket between the locking boss and the nail pushing sledge is provided with a clamping groove; a pushing plate spring sheet is arranged on a guide block. When the stapler is in an initial state, the pushing plate is pushed forwards, the front end of the pushing plate is bridged with the rear part of the nail pushing sledge, the locking boss passes through the clamping groove, the pushing plate pushes the nail pushing sledge to reach the front end of the nail bin, the nail pushing sledge is clamped by the nail pushing particle to stay at the front end of the nail bin, and the pushing plate is reset backwards; when the pushing plate is pushed again, the pushing plate cannot be bridged with the nail pushing sledge, the pushing plate spring sheet presses down the pushing plate, the locking boss falls into the clamping groove and the pushing plate is locked. The structure can prevent the empty nail bin from being pushed by mistake.

The invention relates to an endoscopic surgery cutting stapler with an elastic neck ring. The cutting stapler comprises a stapler body, an executing head, a connection stapler body, an extension pipe of the executing head and an operating mechanism for controlling the movement of the executing head, wherein the executing head consists of an executing rack, a sliding bar, a nail cartridge and a nail anvil; the sliding bar, the nail cartridge and the nail anvil are arranged on the executing rack; the nail anvil can rotate relatively to the nail cartridge; the periphery of the near end of the executing rack is covered with the elastic neck ring; the edge of the far end of the elastic neck ring closely sticks to the edge of the near end of the nail anvil; when the nail anvil rotates to be in an opening state relative to the nail cartridge, the elastic neck ring is pressed by the nail anvil to perform elastic deformation, the edge of the far end of the elastic neck ring closely sticks to the edge of near end of the nail anvil all the time; and when the nail anvil rotates to be in an closing state relative to the nail cartridge, the edge of the far end of the elastic neck ring return to closely sticks to the edge of near end of the nail anvil. By adopting the invention, the technical effects of reducing the processing and assembling difficulties of each part in the executing head and the product cost can be achieved; and the product is more convenient to use.

The invention relates to the technical field of medical equipment, in particular to a disposable foreskin cutting stapler. The disposable foreskin cutting stapler comprises a concave seat, a staple chamber sleeve, a casing, a lead screw, a staple pushing piece, a movable handle and a connecting rod, wherein the lead screw is arranged in the casing, the staple chamber sleeve is arranged on the left side of the casing, the staple pushing piece and the concave seat are arranged in the staple chamber sleeve, the movable handle is installed on the casing, the connecting rod is connected with the casing and the movable handle, a safety clip is arranged on the casing, an adjusting nut is arranged at the tail end of the casing, an adjusting bolt is arranged at the end of the lead screw, exhaust through holes are formed in the concave seat, and a suture carrying hole is formed in the staple chamber sleeve. The disposable foreskin cutting stapler has the advantages that the operation time is effectively shortened during use, the stapler is convenient for a doctor to operate, the stapler is not only safe but also practical, the stress area is increased through the fish-tail-shaped adjusting nut, the stress points are increased, the appearance is attractive and the operating hand feeling is improved.

The invention relates to a skidproof nail box of a surgical linear cutting stapler, which is provided with a nail box (6), wherein the upper wall surface of the nail box is provided with a longitudinal cutting groove (62) and the two sides of the cutting groove are respectively provided with a nail outlet hole. The skidproof nail boxis characterized in that the upper wall surface of the nail box is provided with a skidproof convex-concave surface. The skidproof convex-concave surface can effectively prevent human organisms from skidding in an operation process, thereby ensuring surgical cutting and suturing quality.

The invention discloses a novel prepuce cutting stapler, which comprises a glans penis cover, nail boxes, suturing nails, a cutting knife, a barrel, a jacking body, a feed mechanism, a cutting knife rotating mechanism and a knob; a nail anvil ring and a knife anvil ring are embedded into the glans penis cover; the knob is connected with the tail part of the glans penis cover through threads and is contacted with the tail part of the barrel; the glans penis cover is sheathed in the jacking body; a knife holder is embedded into the jacking body; the cutting knife is connected with the knife holder; the glans penis cover, the nail boxes, the suturing nails, the cutting knife and the jacking body are arranged in the barrel in sequence; the back faces of the suturing nails are contacted with the jacking body; the feed mechanism is matched with the jacking body. When prepuce cutting is performed by the novel prepuce cutting stapler disclosed by the invention, the cutting knife can rotate, and therefore the cutting effect is improved, and the prepuce is completely cut off.

A surgical instrument includes a handle assembly, a shaft assembly, an end effector, and a transmission mechanism at least partially positioned within that handle assembly. A power supply assembly anda manual reset device are arranged in that handle assembly, and the power supply assembly provides a power source for the surgical instrument. The manual resetting device can rotate in the first direction or the second direction, so that the transmission mechanism can be driven to move from the distal end to the proximal end, and the transmission function of the transmission mechanism can be restored; wherein the second direction is opposite to the first direction. According to the surgical instrument of the invention, when the electric circuit fails, the single-hand operation can realize thefunctions of manually returning the cutting member and restoring the transmission mechanism, so that the surgical cutting stapler can be used normally. The control device of the invention can be operated simply, is safe, stable and reliable, and effectively reduces secondary injury to human body.

The invention relates to the technical field of medical instruments and discloses a cut stapler to improve the safety factor of the cut stapler and reduce pain brought to an operation patient by false trigger. The cut stapler comprises an anvil arm, a staple box arm provided with a staple box, a trigger device and a safety device, wherein the trigger device comprises a staple pushing frame for triggering a staple in the staple box; the staple pushing frame is provided with a chute formed along the motion direction and a clamping hole intersected with the chute; the safety device comprises a safety body and an elastic piece; the safety body can be assembled on the staple box arm in a mode of moving between a high place and a low place through the elastic piece; the safety body is provided with a passing groove for the stable pushing frame to pass through, is provided with a clamping position which is interfered with the clamping hole of the stable pushing frame when the safety body is positioned in the high place, and is provided with a neck which is positioned in the chute of the stable pushing frame to allow the stable pushing frame to move relative to the safety body when the safety body is positioned in the low place.

A surgical instrument includes a handle assembly, a shaft assembly, an end effector, and a transmission mechanism at least partially positioned within that handle assembly. The handle assembly is provided with a power supply assembly and an emergency knife withdrawal device, and the power supply assembly provides a power source for the surgical instrument. The emergency tool retraction device is rotatable in a first direction, thereby driving the transmission mechanism to move from a distal end to a proximal end to retract the cutting member within the end effector to an initial position. According to the surgical instrument of the invention, when the electric circuit fails, the single-hand operation can realize the functions of manually returning the cutting member and restoring the transmission mechanism, so that the surgical cutting stapler can be used normally. The control device of the invention is simple in operation and effectively reduces the secondary injury to the human body.

The invention discloses an endoscopic cutting stapler, comprising a stapling functional member, a connecting rod and a trigger handle. The stapling functional member comprises a staple magazine, a staple holder, an I-shaped beam member and a blade; one face, facing the staple holder, of the staple magazine is a curved face which enables staples to close and staple tissues when the staple magazine and the staple holder are closed; a plurality of rows of staples are arranged in the staple magazine, and the staples in accordance with the curved face of a first contact face are arranged in a curvilinear form; a push face, used for contacting holding blocks and pushing the same, of the I-shaped beam member is a curved face the same as the first contact face in shape. The contact faces of the staple holder and the staple magazine are modified into arc faces or bent faces (curved faces), overall diameter of the stapling functional member can be reduced at the premise of not reducing the width of tissues contained by the contact faces and ensuring closing effect of stapling, and thus, operations are made coherent and direct, surgical injury is reduced and operation results are improved.

The invention belongs to the technical field of medical instruments and particularly relates to a drive unit for endoscopic cutting staplers. The drive unit comprises a shell, a trigger rotatably arranged on the shell and a rack, a drive block and a switching part which are arranged in the shell, the drive block is arranged on the trigger, the front end of the drive block is provided with a shiftpiece matched with the rack in tooth form, the drive block of the trigger is pulled to be matched with the rack to drive the rack to move forward, and the rack is connected with a jaw assembly througha drive rod; the switching part comprises a switching button arranged above the rear end of the shell and a switching limit block rotatably arranged in the shell, a limit long slot is formed in the rack, a switching torsional spring is arranged between the switching limit block and the shell, the switching torsional spring acts on the switching limit block to enable a boss at the rear end of theswitching limit block to be inserted in the limit long slot, a switching slope is arranged at the bottom of the switching button, the oblique plane of the switching slope pushes the boss to enable theswitching limit block to rotate when the switching button is pushed forward, and the boss is divorced from the limit long slot.

The invention discloses an empty nail bin self-locking device of a linear cutting stapler, comprising a locking block which is provided with an unlocking position which is not contacted with the cutter and a locking position which pushes through the cutter in the front and rear direction, a locking keeping mechanism which leads the locking block to have the trend of rotating towards the locking position, and an insurance part which is provided with a safety device; when the insurance part is arranged at the insurance position, the locking block is arranged at the unlocking position; the empty nail bin self-locking device also comprises a position limit mechanism which can resist the applying force of the locking keeping mechanism and leads the insurance part to be fixed on the insurance position, and an operation mechanism which leads the insurance part to be disconnected from the insurance position by pushing through the cutter in the front and rear direction. The empty nail bin self-locking device of the linear cutting stapler of the embodiment of the invention has the advantages of simple structure, high reliability, simple usage and low execution cost.

The invention discloses a one-part propelling and retreating mechanism and an endoscopic cutting stapler comprising the same. The one-part propelling and retreating mechanism comprises a turning rod, a pawl, a driving gear, a transmission gear, a reversing gear, a cutting gear and a cutting rack, wherein the turning rod overcomes tension of a spring to turn, the pawl is fixedly connected with the turning rod, a ratchet wheel is fixed on the turning rod and in transmission connection with the pawl, the driving gear is fixedly connected with the ratchet wheel and is in transmission connection with the transmission gear and the reversing gear, and the cutting rack is in transmission connection with the cutting gear. The stapler comprises the one-part propelling and retreating mechanism, a casing and an ejection rod, wherein the one-part propelling and retreating mechanism is fixedly mounted on the casing. With adoption of a structure of the ratchet wheel and all the gears, cutting is finished once, an operation process is simplified, and the product reliability is improved remarkably.

The invention provides an endoluminal cutting stapler assembly capable of preventing tissue slippage, comprising a staple abutment plate, a staple cartridge and a plurality of staples. The root of thestaple abutment plate is rotatably connected with the root of the staple cartridge. The staples are installed in the staple cartridge, and the staple cartridge is provided with a clamping surface forclamping tissue. one end of the cartridge facing the attending physician is defined as the proximal end of the cartridge, the distal end of the cartridge is distal to the attending physician's cartridge, the clamping surface is provided with a cutter groove which runs from the proximal end of the nail cartridge to the distal end of the nail cartridge. The cutter groove is provided with a plurality of nail outlet holes for sewing nails. The longitudinal direction of the cutter groove is taken as the direction of the cutter groove. The clamping surface is transversely provided with an anti-skidrib at a position close to each nail outlet hole. The invention can effectively prevent the tissue from slipping in the assembly when the tissue is clamped and cut, and ensures the effective suture and cutting separation of the sutured tissue.

The invention discloses a jaw direction adjustment mechanism of an endoscope cutting stapler. The jaw direction adjustment mechanism comprises a joint rotary knob, a rotating head and a bidirectional adjustment assembly. The bidirectional adjustment assembly is rotationally arranged in the rotating head and comprises a main rotating disc, an outer ring, a plurality of elastomers, a plurality of rollers, an inner planet gear, two pin shafts and two joint push rods. A transmission pin, clamping feet and pulling claws are arranged on the bottom face of the main rotating disc. A positioning column and a matched boss are arranged on the inner planet gear. The outer ring is located between the main rotating disc and the inner planet gear, the yoke face of an inner hole of the outer ring is matched with the positioning column, the pulling claws, the rollers and the elastomers are sequentially arranged between the yoke face of the inner hole of the outer ring and the matched boss at intervals, the rollers are always attached to the working face of the inner planet gear through the elastomers, and a bidirectional overrunning clutch locking structure is formed. The function of bidirectionally adjusting a jaw of the stapler through the bidirectional adjustment assembly is achieved, backswing of the jaw is effectively avoided, operation is easier and saves more labor, and an operator can feel changes of adjustment of the jaw in time.