42 results about "Surgical scissors" patented technology

A surgical tool includes a drive housing, a shaft extending from the drive housing, wrist arranged at an end of the shaft and including a distal clevis, an axle mounted to the distal clevis, and first and second actuation pulleys rotatably mounted to the axle and rotatable about a pivot axis extending through the axle, each actuation pulley providing an actuation boss eccentric to the pivot axis, and an end effector operatively coupled to the wrist and including first and second blades pivotably coupled to the actuation bosses of the actuation pulleys. The blades are movable between open and closed positions by rotating the actuation pulleys such that the actuation boss of each actuation pulley remains proximal to a centerline of the axle, and movable to an over-centered position by rotating the actuation pulleys such that the actuation boss of each actuation pulley is located distal to the centerline.

The invention relates to the technical field of cleaning and disinfection of medical instruments, and discloses a device for cleaning and disinfecting cutting nippers type medical instruments, the device comprises a base plate and surgical scissors, a treatment box is fixedly mounted at the top of the base plate, and a box door is hinged to one side of the front surface of the treatment box; the disinfection assembly comprises an electric push rod fixedly mounted at the top of the treatment box, a top plate is fixedly connected to the bottom of the telescopic end of the electric push rod, a flushing assembly is arranged on the outer ring of the top plate, and the disinfection assembly further comprises a rotating unit and a placing unit; the rotating unit comprises an outer ring gear and an inner ring gear which are uniformly and rotatably mounted at the bottom of the top plate, the outer ring gear is arranged to be a rectangular ring, and the inner ring gear is located on the inner side of the outer ring gear, so that a direct static soaking disinfection mode is solved, the contact effect of a disinfectant and cutting nippers type medical instruments is reduced, and the disinfection efficiency is improved. And the soaking disinfection effect is also reduced.

An instrument with opposable jaws or shears, e.g. needle driving forceps or surgical scissors, comprises a pair of crossed arms 402, 404 pivotally connected at a box hinge, where one arm passes throug

The present invention proposes an intelligent flushing device for medical devices used in dermatology, which relates to the technical field of flushing devices and includes a flushing box with a flushing chamber provided therein. A top block is fixedly mounted on the top inner wall of the flushing chamber, a top pipe is fixedly mounted on the bottom surface of the top block, and a plurality of shearing mechanisms are rotatably mounted on the top pipe; the shearing mechanism includes two hooks, and the two handle rings of the surgical scissors are respectively mounted on the two hooks. The present invention proposes an intelligent flushing device for medical devices used in dermatology. By providing a flushing box, a top block, a top pipe, a square tube, a shearing mechanism, a driving mechanism, a nozzle and a water inlet pipe, the surgical scissors can be hung separately and the surgical scissors can be flushed in multiple directions. While the flushing operation is being performed, the surgical scissors are also required to perform a shearing motion, so that the dirt at the overlapping position of the surgical scissors blades is rubbed off, which is also convenient for flushing the position, ensuring the flushing effect of the surgical scissors and ensuring the hygiene of the surgical scissors after flushing.

The application relates to the technical field of medical instrument cleaning and disinfection, and discloses a device for cleaning and disinfecting medical instruments, which comprises a base plate and surgical scissors, a treatment box is fixedly arranged on the top of the base plate, a box door is hingedly arranged on the front side of the treatment box, a disinfection assembly is arranged above the inside of the base plate, the disinfection assembly comprises an electric push rod which is fixedly arranged on the top of the treatment box, the bottom of the telescopic end of the electric push rod is fixedly connected with a top plate, a flushing assembly is arranged on the outer ring of the top plate, the disinfection assembly further comprises a rotating unit and a placing unit, the rotating unit comprises an outer ring gear and an inner ring gear which are uniformly rotatably arranged on the bottom of the top plate, the outer ring gear is arranged in the form of a rectangle, and the inner ring gear is located on the inner side of the outer ring gear. The device solves the problem of directly static soaking disinfection, reduces the contact effect of disinfectant and medical instruments, and also reduces the soaking disinfection effect.

The vaginal scissors comprise a first scissor body, a second scissor body, a first scissor handle and a second scissor handle, the first scissor body is fixedly arranged at the front end of the first scissor handle, and the second scissor body is fixedly arranged at the front end of the second scissor handle; the first cutter body and the second cutter body are bent towards the same side, a first cutting edge matched with a tail wire is arranged on the inner side of the first cutter body, and a second cutting edge matched with the first cutting edge and the tail wire is arranged on the inner side of the second cutter body. Sawteeth matched with the first knife body are arranged on a second knife edge of the second knife body, and a positioning groove matched with the second knife body is formed in a first knife edge of the first knife body. The pair of vaginal scissors for trimming the tail filaments of the contraceptive device is ingenious in design, simple in structure and practical in function, and effectively solves the problems that in the prior art, no special vaginal scissors exist when the tail filaments of the contraceptive device are trimmed, straight-head surgical scissors are mostly adopted, and operation in the vagina is inconvenient.

The invention relates to the technical field of in-vitro isolated culture application of secondary hair follicles of Western Anhui white geese, in particular to an in-vitro isolated culture method of secondary hair follicles of Western Anhui white geese, which specifically comprises the following steps: bloodletting necks of Western Anhui white geese to death, taking the hair follicles from leg skins of the Western Anhui white geese, repeatedly washing with 0.8-1.2% of double-antibody PBS buffer solution, and carrying out in-vitro isolated culture of secondary hair follicles of Western Anhui white geese. The method comprises the following steps: cutting off redundant hair trunks by using surgical scissors, washing down feathers attached to the surface by using normal saline, spraying alcohol for disinfection, stripping leg skin, and soaking in a PBS (Phosphate Buffer Solution) added with 0.8-1.2% of double antibodies for the next operation. The in-vitro separation culture method for the secondary hair follicles of the West Anhui white geese has the beneficial effects that the in-vitro separation culture method for the secondary hair follicles of the West Anhui white geese is simple and convenient to operate and short in time period, an organ culture method is utilized, only a small piece of skin tissue of the West Anhui white geese is used, the hair follicles are microscopically stripped, the whole hair follicles are directly cultured, and after hair follicle stem cells are cloned, the hair follicle stem cells are purified and subcultured.

The utility model discloses an auxiliary cleaning rack for surgical instruments, which comprises a rack body, a mounting plate is arranged on the rack body, a plurality of first vertical rods are arranged on the mounting plate at intervals along the length direction of the mounting plate, a second vertical rod is arranged between every two adjacent first vertical rods, each second vertical rod is connected with a sliding block, and the sliding blocks are arranged on the mounting plate. Guide holes matched with the sliding blocks are formed in the mounting plate, the sliding blocks are jointly in threaded connection with a screw rod, the screw rod is rotationally arranged on the mounting plate, the length direction of the screw rod is parallel to the axis direction of the guide holes, and when the screw rod rotates, each second vertical rod moves to be close to or away from the corresponding first vertical rod. According to the surgical instrument auxiliary cleaning frame of the structure, through cooperation of the first vertical rods and the second vertical rods, surgical scissors and surgical forceps can be placed in batches for follow-up cleaning, and the distance between the first vertical rods and the second vertical rods can be synchronously adjusted through the screws so that the surgical instrument auxiliary cleaning frame can be matched with the surgical scissors and the surgical forceps of different specifications; and the applicability of the device is improved.

The present disclosure relates to a surgical robotic system having surgical scissors. In some embodiments, the surgical scissors include independently actuable cutting members, each configured to pivot about a pin axis to perform a cutting action. In some embodiments, the surgical scissors include an integrated spring. In some embodiments, the surgical scissors include cutting members configured to pivot about one or more axes while being constrained from pivoting about another axis. In some embodiments, the surgical scissors include multiple curves, and one or more curves can maintain an opening angle of the scissors.

A surgical clipper blade assembly includes a stationary blade and a moveable blade adjacent the stationary blade. The moveable blade is configured to reciprocate relative to the stationary blade to remove hair from a skin area. A blade housing houses the stationary blade and the moveable blade. The blade housing has a guide surface that faces the skin area during a hair removal process. A skin conditioning member in the form of a pad that extends along at least one of a skin facing surface of the stationary blade and the guide surface of the blade housing. The skin conditioning member includes a skin preparation composition. Reciprocating motion of the moveable blade vibrates the skin conditioning member against the skin area as the skin preparation composition is released onto the skin area.

The veterinary tool cleaning device comprises a box body, the upper end of the box body is fixedly connected with an upper cover, the side face of the box body is connected with a box door through a hinge, and a heating wire and water are arranged at the bottom of the box body; an unfolding assembly, a spacing assembly and a cleaning assembly are arranged in the box body. The surgical scissors can be opened, the cutting edges of the surgical scissors can be cleaned conveniently, the distance between the adjacent surgical scissors can be increased, and the side faces of the surgical scissors can be cleaned conveniently; the surgical scissors cleaning device can clean the surgical scissors, clean residues on the surgical scissors, wash and clean the surgical scissors, improve the cleaning effect, provide a high-temperature and high-pressure environment in the box body, disinfect the surgical scissors and realize repeated use of the surgical scissors.

The invention relates to the technical field of fresh-keeping solutions, in particular to a fresh-keeping solution for increasing the openness of chrysanthemum, which is characterized by comprising the following components by mass concentration: ionized water (25g / L), aspirin (20g / L), silver nitrate (1.5 g / L) and 8-hydroxyquinoline (0.5 g / L). According to the chrysanthemum pretreatment method, flowering branches close to the chrysanthemum before blooming are sheared with disinfected surgical scissors, the length of the chrysanthemum branches is reserved to be 20-25 cm, and the method for increasing the openness of the chrysanthemum comprises the following steps that after picking is conducted, the chrysanthemum branches are cultured for 24 h in a fresh-keeping solution, then 10 branches form a bundle, the chrysanthemum branches are wrapped with paper and then sleeved with a plastic film, and the chrysanthemum branches are preserved for 8 d at the temperature of 5 DEG C; all the mixed preparation raw materials are slightly toxic, reagents are easy to obtain, all preservatives are easy to prepare, after the pretreatment liquid is used, bottle insertion can be conducted without pruning and box opening during bottle insertion, the labor force of customers is reduced, and the production efficiency is improved.

The utility model provides a circumcision device. The circumcision device comprises a pair of surgical scissors. The surgical scissors include a blade configured to shear a prepuce of a penis and a clamp configured to clamp the prepuce adjacent to an incision. The incision is generated in response to the surgical scissors shearing the prepuce. Therefore, blood flow from the incision can be effectively reduced.

The application provides a slow-rebound safety surgical scissors, which comprises a first handle, a second handle, a driving shear head and a driven shear head, a connecting cavity is formed at the head of the first handle, the tail end of the driving shear head is rotationally connected in the connecting cavity through a rotating seat, a locking block is fixed in the connecting cavity, and a locking groove is formed at the tail end of the driving shear head and matched with the locking block; the tail end of the driving shear head is further fixed with a first rotating shaft seat, the connecting cavity is further fixed with a second rotating shaft seat, and a main adjusting cylinder is movably connected between the first rotating shaft seat and the second rotating shaft seat. The connecting cavity is formed at the head of the first handle, the tail end of the driving shear head is rotationally connected in the connecting cavity through the rotating seat, namely, the driving shear head can rotate in the connecting cavity, so that the driving shear head can be retracted to avoid unnecessary shearing effect caused by the blade when a large swing occurs during the transfer process, and the safety of the surgical scissors during use is improved.

The application discloses a kind of adjustable surgical instrument cleaning support frame, belong to medical instrument cleaning equipment technical field, this adjustable surgical instrument cleaning support frame, including cleaning frame assembly, the front and rear ends of the cleaning frame assembly One side is equipped with first fixed frame, the front and rear ends of the cleaning frame assembly Center is slidably connected with multiple slides, the front and rear ends of the cleaning frame assembly Another side is slidably connected with second fixed frame;Wherein one of the first fixed frame and the corresponding slide between installation has extension mechanism, the center top of the cleaning frame assembly is equipped with placing mechanism, the placing mechanism is used to the suspension support of surgical scissors, the center of the cleaning frame assembly is equipped with support mechanism.The application is adjusted cleaning frame assembly by designing cleaning frame assembly, functional, meet different specifications ultrasonic cleaner model, easy to use.

A surgical tool includes a drive housing, a shaft extending from the drive housing, wrist arranged at an end of the shaft and including a distal clevis, an axle mounted to the distal clevis, and first and second actuation pulleys rotatably mounted to the axle and rotatable about a pivot axis extending through the axle, each actuation pulley providing an actuation boss eccentric to the pivot axis, and an end effector operatively coupled to the wrist and including first and second blades pivotably coupled to the actuation bosses of the actuation pulleys. The blades are movable between open and closed positions by rotating the actuation pulleys such that the actuation boss of each actuation pulley remains proximal to a centerline of the axle, and movable to an over-centered position by rotating the actuation pulleys such that the actuation boss of each actuation pulley is located distal to the centerline.

The invention belongs to the technical field of irradiation sterilization of medical products, and discloses an irradiation sterilization device for medical products, which comprises a box body and an irradiation sterilization control module, and further comprises a placement frame arranged in the box body; the first shelving area and the second shelving area are arranged on the two sides of the placement frame respectively; the movable module is mounted in the second shelving area; the two rotating modules are symmetrically mounted in the first shelving area; the movable module comprises a rotating plate rotationally connected to the containing frame and an ejection piece fixedly connected with an inner cavity of the containing frame. Through cooperation of structures such as the fixing piece and the hanging piece, when the pipe bodies, the abutting plate piece, the first connecting plate and the second connecting plate are in a horizontal state, the multiple surgical scissors hung on the surfaces of the pipe bodies are distributed at equal intervals one by one due to the abutting plate piece, and the surgical scissors are in an unfolded hanging state on the two pipe bodies; therefore, the hidden danger of sterilization caused by continuous low-dose irradiation of the shadow area in a static state is avoided.

The utility model relates to the technical field of medical instruments, and discloses a detachable surgical instrument cleaning, disinfecting and fixing device which comprises a tray, a micro motor, rotating columns, a ratchet disc, fixing columns and pawls, telescopic rods are arranged at the upper end and the lower end in the tray, mounting parts for fixing the telescopic rods are arranged on the rotating columns at the lower end, and supporting rods are inserted into the two ends of each telescopic rod. When the two telescopic rods are opened to the maximum position where the surgical cutting forceps can be opened, the surgical cutting forceps needing to be cleaned and disinfected are sequentially opened and hung on the surfaces of the clamping grooves in the telescopic rods, then the tray is placed in equipment to clean and disinfect the surgical cutting forceps, and in the cleaning and disinfecting process, the surgical cutting forceps can be conveniently cleaned and disinfected. A remote controller can be used for starting the micro motor to enable the rotating column to rotate and drive the polygonal column to rotate, so that the supporting rod can rotate, different positions of the surgical cutting nippers can be cleaned, and when the micro motor is closed, the pawl can be clamped on the ratchet wheel disc, and the ratchet wheel disc is fixed and does not rotate.

The invention discloses performance detection equipment for surgical scissors production, and belongs to the technical field of medical instrument detection, the performance detection equipment comprises a test seat and a test chamber used for detecting capsular scissors, the test chamber is internally provided with a scissor blade test groove and a scissor body test hole, and the inner side wall of the scissor body test hole is connected with a positioning assembly used for limiting the capsular scissors. The inner end face of the shear blade testing groove is connected with a plurality of deflection seats through steering tables, the deflection seats are connected with film sleeving column heads through hydraulic push rods, the outer side walls of the output ends of the hydraulic push rods are provided with a plurality of falling-off testing assemblies, and the left inner side wall and the right inner side wall of the shear blade testing groove are provided with film limiting assemblies. Through the arrangement of the flexible rubber sleeve and the deflection assembly, the push-type shearing technique of a doctor can be simulated through dynamic deflection pressing driven by the deflection rod, the flexible rubber sleeve replaces a rigid pressing head to avoid instrument damage, simulation of the real shearing force state in an operation is achieved, and detection of the elastic recovery performance of the capsular scissors after pressing is more reliable.

This invention discloses a scissor-feeding mechanism, relating to the field of scissor grinding technology. It includes a machine frame with a servo rotating platform on its upper part and a servo motor mounted on its bottom. The output shaft of the servo motor is connected to the bottom of the servo rotating platform, driving it to rotate. A rotating material tray is fixedly mounted on the upper part of the servo rotating platform. This scissor-feeding mechanism places surgical scissors on the material tray. Positioning pins and stop pins position the scissors, and then magnetic attraction is used to pick them up, facilitating material removal. During material removal, the elasticity of a spring causes a cylindrical pin to engage with a pin hole on the surgical scissors, while the front of the scissors engages with a slot on a scissor fixing plate, ensuring the stability of the scissor fixing plate during the material removal process.

The utility model relates to a pair of surgical scissors, in particular to a pair of scissors for anorectal surgery, which comprises two hinged scissor handles, each scissor handle consists of a first handle body, a second handle body and a third handle body, and two ends of the second handle body are respectively connected with one end of the first handle body and one end of the third handle body through damping rotating shafts. The scissors handles of the scissors for the anorectal operation are of a three-section assembly structure, external force is applied to control the damping rotating shaft, the second handle body and the first handle body can rotate relative to each other, the second handle body and the third handle body can rotate relative to each other, and force can be applied by hands to adjust the shape structures of the scissors handles according to the position conditions of to-be-sheared tissues in the anus and the rectum. According to the pair of scissors for the anorectal operation, a light source and a visual field are prevented from being blocked by the scissors holding hand during the operation, the scissors holding operation is smoother, the included angle between the second handle body and the first handle body and the included angle between the second handle body and the third handle body can be adjusted, the overall length of the scissors handles can be adjusted, the scissors handles can be in various shapes and structures, and the application range of the pair of scissors for the anorectal operation is wider.

A surgical tool includes a drive housing, a plurality of capstan assemblies arranged within the drive housing, a plurality of drive cables operatively coupled to and extending from the plurality of capstan assemblies. At least one capstan assembly includes a drive gear, and a driven gear arranged to intermesh with the drive gear and including a cable pulley configured to receive an end of a corresponding one of the plurality of drive cables. The surgical tool further includes a rotation limiter system mounted within the drive housing and actuatable between a blocking position, in which the rotation limiter system physically prevents the drive gear from rotating in a first angular direction to a predetermined angular position, and an unobstructed position, in which the rotation limiter system moves and thereby allows the drive gear to rotate to the predetermined angular position.

The utility model relates to medical instrument technical field especially relates to a gynecological operation is with horizontal pull formula operation scissors, including cutting edge, handle, hinged bolt and handle ring, two top rear sides of cutting edge are hinged through hinged bolt, two handle's front end is linked with two cutting edge's rear end respectively, two handle ring that can move along its length direction is equipped on two handle, two cutting edge's front end portion is curved upwards. The utility model discloses through handle ring can move along the length direction of handle, make the two fingers of handle ring in the operation process through not produce contact obstruction when shearing, thereby improved the fluency of using operation scissors to shear, and also can adjust handle ring to its habitual position according to the use habit of different medical staff, two cutting edge's front end portion is curved upwards, through the front end portion of cutting edge is curved upwards, when using cutting edge end portion to shear, reduce the situation that the hand that holds handle obstructs operation field.

Surgical scissors for incising anterior capsule of lens include first and second levers extending in front-rear direction and rotation shaft rotatably connecting first and second levers to each other. First lever includes: first handle formed at rear portion with reference to rotation shaft; first blade having first non-cutting part formed at front portion with reference to rotation shaft and extending forward, and first cutting part protruding in one side direction crossing front-rear direction and up-down direction from front end of first non-cutting part. Second lever includes: second handle formed at rear portion with reference to rotation shaft and capable of being spaced downward from first handle; second blade having second non-cutting part formed at front portion with reference to rotation shaft and extending forward, and second cutting part protruding in one side direction from front end of second non-cutting part to be in contact with first cutting part.

The invention relates to the technical field of medical instruments, in particular to split surgical scissors capable of being disassembled and assembled quickly, which comprise a left scissor arm assembly and a right scissor arm assembly, and each scissor arm assembly comprises a near-end rocker arm, a finger ring, a scissor arm body, a scissor blade and a horizontal cutting groove; the pair of split type surgical scissors capable of being disassembled and assembled quickly further comprises a pivot assembly, a lock cavity assembly and a lock cylinder assembly. The pivot assembly is arranged on the horizontal cutting groove of any shear arm assembly; the lock cavity assembly is arranged on the horizontal cutting groove of the other shear arm assembly and comprises a round through hole, a lock cavity inserting groove, a spring top shaft, a swing side hole and a retraction blind groove. The lock cylinder assembly is arranged in the lock cavity assembly and comprises a spring sleeve, a front pushing compression spring, a stirring longitudinal rod and an operation front hole. The pair of split type surgical scissors capable of being disassembled and assembled rapidly can be disassembled and assembled conveniently, the two split scissor arm assemblies can be cleaned and disinfected thoroughly conveniently, and the problem that an overlapped and crossed area cannot be cleaned and disinfected is solved.

The invention relates to the technical field of medical treatment, and discloses a pair of surgical scissors which comprises a hollow rod, a shearing mechanism and two stabilizing mechanisms are arranged on the hollow rod, the shearing mechanism comprises two semicircular fixing plates fixedly connected to the inner wall of the hollow rod, the two semicircular fixing plates are fixedly connected with first connecting rods, and the first connecting rods are fixedly connected with second connecting rods. The outer walls of the two first connecting rods are rotationally connected with first hinge rods, and second hinge rods are hinged to the right sides of the two first hinge rods. By arranging the shearing mechanism, the problems that after tissue shearing operation is completed every time, a doctor needs to manually reset a blade to an initial state and needs to carefully adjust the position of the blade to ensure the accuracy of next-time shearing, so that precious operation time is wasted, and due to instability of manual operation, the operation difficulty is reduced are solved. The problem that the accuracy of next-time shearing is affected due to inaccurate resetting of the blade caused by slight carelessness is solved.

The utility model relates to the technical field of scissors, in particular to a pair of surgical scissors, which comprises a first knife handle, a second knife handle, a first knife head, a second knife head and a first pressing sheet, the first cutter head is provided with a first side and a second side which are oppositely arranged, the second cutter head is connected to one end of the second cutter handle, the first pressing piece is arranged on the first side, and when the other end of the first cutter handle and the other end of the second cutter handle are driven, the first cutter head and the second cutter head can be switched between a closed state and an open state. The first pressing piece is used for pressing a bleeding opening when the first tool bit and the second tool bit are closed to shear an object to form the bleeding opening so as to stop bleeding of the bleeding opening. By means of the mode, the surgical scissors not only have the shearing function, but also have the function of pressing the surgical scissors to achieve hemostasis.

The craniotomy scissors comprise a first scissor element and a second scissor element, the first scissor element comprises a first scissor head, a first scissor handle and a first finger ring which are sequentially and fixedly connected into a whole, and the second scissor element comprises a second scissor head, a second scissor handle and a second finger ring which are sequentially and fixedly connected into a whole. The first cutter handle is rotationally connected with the second cutter handle; a second tool bit on the second scissor element is bent in an arc shape, and a tool groove penetrating through the two sides of the second tool bit is formed in the second tool bit; the first tool bit is bent in an arc shape, and when the first tool bit is inserted into the tool groove, a shearing effect is achieved between the first tool bit and the inner walls of the second tool bits on the two sides of the tool groove. A suction channel is arranged in the first scissor element or the second scissor element, and an outlet of the suction channel can be externally connected with a negative pressure machine. According to the utility model, observation is facilitated, the probability of bumping brain tissues under the meninx in the meninx cutting process is effectively reduced, and the probability of cutting the brain tissues by mistake is effectively reduced, so that the meninx cutting device has great market application and popularization values.

The present application relates to the technical field of surgical instruments, and specifically discloses a multifunctional instrument for laparoscopic surgery, which includes scissors, a rotating rod, a mounting tube, an extension tube, a movable handle, and a fixed handle; the scissors are mounted on the end of the rotating rod, and the end face of the rotating rod is connected to a flip plate; the side of the mounting tube near the flip plate is provided with a mounting opening for the flip plate to rotate, and the inner wall of the mounting opening is connected to a rotating shaft, and the rotating shaft passes through the flip plate; the circumferential surface of the end of the mounting tube near the rotating rod is provided with a notch for the end of the rotating rod to enter; one end of the extension tube is connected to the end of the mounting tube away from the rotating rod, and the other end of the extension tube is mounted on the fixed handle, and one end of the movable handle is rotatably connected to the fixed handle via a positioning pin; a flip mechanism for driving the rotating rod to rotate around the rotating shaft is mounted on the fixed handle; a driving mechanism is mounted in the extension tube, and the movable handle drives the scissors to open and close via the driving mechanism. The present application has the effect of improving the convenience of operating surgical scissors.

The surgical scissors for incising the anterior capsule of a lens include first and second levers extending in the front-to-back direction and a rotating shaft rotatably connecting the first and second levers to each other. The first lever includes a first handle formed at a rear portion relative to the rotating shaft, a first non-cutting portion formed at a front portion relative to the rotating shaft and extending forward, and a first blade having a first cutting portion protruding from a front end of the first non-cutting portion in a direction transverse to the front-to-back and up-to-down directions. The second lever includes a second handle formed at a rear portion relative to the rotating shaft and separable downward from the first handle, and a second blade having a second non-cutting portion formed at a front portion relative to the rotating shaft and extending forward, and a second cutting portion protruding from a front end of the second non-cutting portion in a direction configured to abut against the first cutting portion.