28 results about "Jaw opening" patented technology

The invention discloses a sliding block type tong head mechanism which comprises a jaw seat, a sliding block, a first tong claw and a second tong claw, the near ends of the two tong claws are connected with a base disc, the jaw seat is rotationally connected with the base disc, and the sliding block is connected with a traction rope, so that when the traction rope moves, the sliding block is driven to move in the jaw seat, and opening and closing of the tong claws are controlled; the problems that an existing gripper jaw is insufficient in opening force and cannot open tissue are solved, and the pair of forceps is simple in structure and easy to operate.

The present application relates to a kind of device for realizing posture adjustment and bunching, it solves the technical problem that the pose of air pipe in roll-shaped infusion apparatus is not fixed, leading to that roll-shaped infusion apparatus cannot smoothly and reliably enter packaging bag during the operation of existing infusion apparatus automatic winding packaging equipment, the width of whole roll-shaped infusion apparatus is large, which is not conducive to subsequent reliable loading into packaging bag;It includes air pipe posture adjustment device and bunching device, air pipe posture adjustment device includes translation mechanism, jaw opening and closing driving mechanism, left jaw and right jaw, jaw opening and closing driving mechanism is connected with translation mechanism, left jaw, right jaw is connected with jaw opening and closing driving mechanism, left jaw and / or right jaw is connected with limit plate, bunching device includes base, left stand, right stand, hollow bunching block, air pipe guide rod and air pipe guide rod support.The present application is widely used in infusion apparatus automatic winding packaging technical field.

The invention relates to a tip actuation system for a minimally invasive surgical instrument, comprising: a tip actuation system and an outer shaft, the tip actuation system being disposed at an end of the outer shaft remote from a user of the surgical instrument; the tail end actuating system comprises a gear mechanism, a jaw opening and closing mechanism, a staple cartridge actuating mechanism and a clutch mechanism. According to the tail end actuating system for the minimally invasive surgical operating instrument, the gear mechanism distributes rotary motion input from the outside to the jaw opening and closing mechanism and the nail bin actuating mechanism at the same time, and meanwhile the clutch mechanism controls the jaw opening and closing mechanism and the nail bin actuating mechanism to work according to the needed working sequence. In addition, the nail bin is disposable, the nail bin composition structure is simple, and the purpose of reducing cost can be achieved. In addition, due to the design of the nail bin loaded with the blade, the phenomenon of tissue edge deckle edge caused by sharp degree failure of the cutting blade can be obviously reduced.

The application provides an electric endoscope anastomat device, and relates to the technical field of cutting anastomat. The device comprises a support, and further comprises: a jaw opening and closing transmission mechanism, which is installed on the support and is driven by a motor; a cutting knife feeding transmission mechanism, which is installed on the support and is in transmission connection with the jaw opening and closing transmission mechanism; and a rack locking mechanism, which is installed between the jaw opening and closing transmission mechanism and the cutting knife feeding transmission mechanism, and the jaw opening and closing transmission mechanism and the cutting knife feeding transmission mechanism are sequentially driven through the rack locking mechanism. Overall, the application has simple structure, is stable and reliable, and realizes two functions of jaw opening and closing and cutting knife feeding / retracting of the electric anastomat through a group of motors.

Open-end wrench with an asymmetrically structured jaw opening, comprising a handle (10) and a head (20), wherein the handle (10) and the head (20) are connected to each other such that the head (20) is connected to one end of the handle (10), characterized in that an opening (20A), a load-bearing surface (21), two force-application surfaces (22), at least one rounded surface (23), at least one fixing surface (24), a plurality of deflection notches (25), and a clamping surface (26) are arranged on the head (20), wherein the load-bearing surface (21), the force-application surfaces (22), the at least one rounded surface (23), the at least one fixing surface (24), the deflection notches (25), and the clamping surface (26) are directed towards the opening (20A), wherein the load-bearing surface (21) faces the two force-application surfaces (22), wherein the two force-application surfaces (22) are a first force application area (221) and a second force application area.(222) wherein the rounded surface (23) is arranged between the fixing surface (24) and the first force application surface (221), wherein at least one of the avoidance notches (25) is arranged between the first force application surface (221) and the second force application surface (222), wherein one of the avoidance notches (25) is arranged between the second force application surface (222) and the clamping surface (26); and that the loaded surface (21) has a plurality of the avoidance notches (25).

The utility model discloses a pair of wire clamping pliers, which comprises a first plier head, a second plier head, a first handle and a second handle, the first handle is hinged and matched with the first plier head, the second handle is hinged and matched with the second plier head, and the first handle is hinged and matched with the second handle through a linkage pin. The pair of pliers is characterized by further comprising a side plier, a side-mounted pin shaft and a second side-mounted pin shaft, a first jaw is arranged on the first plier head, a second jaw is arranged on the side plier, one end of the side plier is matched with the first plier head and the first handle in a hinged mode, and the other end of the side plier is matched with the first handle in a hinged mode through the side-mounted pin shaft. Compared with the prior art, the wire clamping pliers have the following beneficial effects that the shearing clamp is formed between the side pliers and the first jaw, the whole wire clamping pliers do not need to be rotated when a cable is sheared, and the probability of breakage and fracture in the shearing process is relatively low.

The utility model discloses a clamp head opening and closing structure of a clip applier and a continuous clip applier, and belongs to the field of medical instruments. The tong head opening and closing structure of the clip applier comprises a guide rail, a pair of tong head arms capable of moving in an opening and closing mode and a U-shaped clamping spring, a clamping spring limiting part is arranged on the guide rail, clamping spring connecting parts are arranged at the tail portions of the tong head arms, the clamping spring limiting part is of an L-shaped limiting structure protruding out of the side wall of the guide rail, and a turning part of the U-shaped clamping spring is clamped on the L-shaped limiting structure. The clamping spring connecting part is a clamping hole which is laterally formed in the tail part of the plier head arm; and the buckling part of the U-shaped clamping spring is inserted into the clamping hole of the corresponding plier head arm. Relative displacement of the clamp spring in the using process can be effectively controlled, the problem that a U-shaped clamp spring is prone to falling off is solved, the risk of medical negligence in the operation process is reduced, and unnecessary loss is avoided. The structural design is simple, implementation is easy, the connection firmness of instrument parts and the opening and closing stability of the forceps heads are improved, and the use safety is improved.

The forceps head comprises a head outer shell and a head inner sleeve which is arranged in the head outer shell in a sleeved mode and provided with a bottom wall, an ultrasonic transducer is arranged in the head inner sleeve, a fixed jaw body is arranged at the top of the ultrasonic transducer, and the fixed jaw body is provided with an ultrasonic transducer. A movable jaw body is movably hinged to the head outer shell, a pair of traction lug plates is further arranged on the two sides of the movable jaw body, the traction lug plates are movably hinged to the head inner sleeve, and a jaw opening and closing traction rope stretching out of the head outer shell outwards is arranged on the bottom wall of the head inner sleeve. The dual-energy ultrasonic cutting hemostatic forceps comprise a hollow operating rod, an operating handle, two forceps head steering control mechanisms and a jaw opening and closing control mechanism are arranged at the rear end of the operating rod, and the forceps heads are arranged at the front end of the operating rod through the forceps head steering mechanisms. The dual-energy ultrasonic cutting hemostatic forceps can be widely applied to minimally invasive surgery.

The invention belongs to the technical field of ultrasonic knives, and particularly relates to an ultrasonic knife, a controller and a jaw opening degree and jaw pressure detection method. The cutter bar assembly comprises a cutter body, a trigger sleeve and a mounting sleeve, wherein the trigger sleeve and the mounting sleeve are sequentially arranged in a sleeving mode. Wherein a jaw is hinged to the front end of the mounting sleeve, a driving arm of the jaw is connected with the trigger sleeve, and the trigger sleeve is connected with the sliding block, so that the trigger sleeve is driven by the sliding block to slide, and the jaw is driven to be attached to the cutter body to complete closing of the jaw; a displacement sensor is arranged on the side wall of the mounting sleeve, a detection ring is arranged on the side wall of the triggering sleeve, the detection ring is suitable for being detected by the displacement sensor so as to detect the displacement distance of the triggering sleeve and transmit the displacement distance to the controller, and the closing state of the jaw is judged through the controller; the displacement distance of the trigger sleeve is detected through the displacement sensor, and the rotation amount of the jaw is judged through the controller, so that the closing state of the jaw is judged.

The utility model discloses a compact type high-precision large-stroke multi-point centering electric clamping jaw which comprises a shell, a containing inner cavity is formed in the shell, n horizontal sliding grooves communicated with the containing inner cavity respectively are formed in the upper portion of the shell, n is a natural number larger than or equal to 2, an opening and closing clamping jaw is connected into each horizontal sliding groove in a sliding mode, and the opening and closing clamping jaw is connected with the containing inner cavity in a sliding mode. The clamping jaw opening and closing driving unit is arranged in the containing inner cavity and comprises a middle pushing sliding block, a lead screw body and a rotating power source. The lower portion of the opening and closing clamping jaw is provided with a stroke guide groove and a stroke limiting rod. Tooth-shaped guide grooves are formed in the two side walls of the horizontal sliding groove, tooth-shaped guide columns are arranged on the outer side walls of the opening and closing clamping jaws respectively, the tooth-shaped guide columns extend into the tooth-shaped guide grooves, and gaps are formed between the bottoms of the opening and closing clamping jaws and the bottom of the horizontal sliding groove. Compared with the prior art, the utility model has the advantages of compact integral structure, small volume, large stroke, high sliding precision of the opening and closing clamping jaw and good sliding smoothness.

The utility model belongs to the technical field of medical instruments, and particularly relates to a clip applier head mechanism with a limiting device and a continuous clip applier applying the clip applier head mechanism. The utility model provides a clip applier head mechanism with a limiting device, which aims at solving the problem that in the prior art, a clip applier clamp is easy to age, the opening angle is too large, and the clip applier cannot normally clamp the clamp, and comprises the clip applier, a sliding sleeve and a push rod, the push rod pushes the sliding sleeve to slide, and the sliding sleeve extrudes the clip applier to enable the head of the clip applier to be opened and closed; the forceps holder fixing device comprises a forceps holder fixing sleeve which is parallel to one side of the opening and closing direction of the forceps holder and is tightly attached to the forceps holder, the forceps holder fixing sleeve is connected with a limiting mechanism, and the limiting mechanism limits the outward expansion trend of the forceps holder in the maximum clamping state and ensures that the forceps holder can stably clamp the forceps holder. The utility model further provides an integral scheme of the running clip applier applying the clip head mechanism.

The invention discloses an electric control device for an endoscope treatment instrument to enter and exit a jaw opening, which comprises a main body control device and a pedal control device, and is characterized in that the main body control device is detachably mounted on an endoscope; the main body control device is in wireless communication connection with the pedal control device; the main body control device comprises a triangular shell, roller mechanisms, an operation panel, a control panel I and a storage battery I, the right side of the top surface of the triangular shell is provided with two roller mechanisms used for controlling a therapeutic instrument to enter and exit from a jaw opening, and the roller mechanisms are controlled by a pedal control device to rotate forwards or backwards; the operation panel is arranged on the top face of the triangular shell, and the first control panel and the first storage battery are arranged in the triangular shell. The roller mechanism and the operation panel are electrically connected with the first control panel. The device is characterized in that another'hand 'for controlling the instrument is added for a surgeon through the device, so that the endoscope surgeon can accurately deliver the surgical treatment instrument to a diseased region needing to be operated in an electric control mode.

The utility model discloses a kind of opening and closing clamping mechanisms, including reciprocating movement structure, clamping jaw opening and closing base plate and two clamping jaw structures, every described clamping jaw structure includes clamping jaw connecting rod, clamping jaw opening and closing slider, clamping jaw opening and closing slide rail and clamping jaw;Clamping jaw connecting rod one end is hinged with the moving part of reciprocating movement structure;The other end of clamping jaw connecting rod is hinged on clamping jaw opening and closing slider, and clamping jaw is fixed on clamping jaw opening and closing slider;Clamping jaw opening and closing slider is slidably arranged on clamping jaw opening and closing slide rail, and clamping jaw opening and closing slide rail is installed on clamping jaw opening and closing base plate;The clamping jaw connecting rod of two clamping jaw structures is symmetrical about the axis of reciprocating movement structure.The clamping jaw of use mechanical structure can be replaced separately, and the spacing of clamping can be changed, compared with using cylinder clamping jaw structure, clamping is tighter and the cost of replacement maintenance is lower.The utility model uses connecting rod type clamping jaw opening and closing to provide the clamping jaw structure of higher clamping degree, and clamping jaw opening and closing uses bearing guide rail type cooperation structure, and is not afraid of dust.

An apparatus for providing controlled jaw opening, including: a curved track attached to a first end of a housing; a first bite tray and a second bite tray coupled to the curved track, at least the second bite tray being slidably coupled to the curved track; and an adjustment mechanism disposed within the housing and coupled to the second bite tray, the adjustment mechanism including an extended handle disposed within the housing and extending from a second end of the housing opposite the first end, the extended handle being configured such that movement of the extended handle causes the second bite tray to move along the curved track.

An end effector for use with a surgical instrument includes a lower jaw, an anvil, and a resilient member. The anvil is pivotable relative to the lower jaw between a fully opened position and a fully closed position. The resilient member is configured to bias the anvil to remain in the fully opened position when the anvil is in the fully opened position. The end effector may include a closure ring coupled with the anvil that is translatable relative to the lower jaw and configured to engage the anvil at an interface as the closure ring translates proximally relative to the lower jaw to thereby pivot the anvil relative to the lower jaw toward the fully opened position. In various embodiments, the resilient member may comprise elastomeric material positioned between the closure ring and the anvil or a pair of springs or resilient arms that engage the anvil.

The utility model relates to the field of medical apparatus and instruments, and the utility model discloses a purpose in providing a kind of miniature laparoscope instrument pliers, including sequentially connected along front-back direction pliers assembly, movable link and handle assembly;The pliers assembly includes pliers outer tube, lower jaw and upper jaw, the lower jaw is fixed in pliers outer tube front end, the rear end of the upper jaw and lower jaw is hinged to each other;The movable link is arranged in pliers outer tube, and is transmission connection between upper jaw and handle assembly, the handle assembly is driven by movable link the upper jaw relative to lower jaw opening or closing;The front end of handle assembly is rotatably installed with rotating handle, the rear end of pliers outer tube is fixed in rotating handle inner side, the rotating handle rotates with the middle axis of movable link as rotating shaft, and pliers assembly can be driven 360 ° rotation.The utility model does not need to cooperate puncture device to use, with small wound, convenient to use and flexible operation etc.

This invention discloses a steerable radiofrequency ablation and plasma ablation surgical forceps for laparoscopic surgery, relating to the field of medical device technology. It includes a proximal component for manipulation, a slender main body component that enters the body cavity, and a distal working component. The main body component includes a hollow sleeve, a pull rod slidably connected within the sleeve, and a gripping portion fixed to the outside of the sleeve. The segment of the sleeve near the gripping portion has an upper notch structure, at which a drive component for steering the working component is provided. By integrating a bipolar radiofrequency electrode and a localized liquid spray system on the same jaw structure, structural integration of both radiofrequency ablation and plasma ablation energy action modes is achieved. A unique sliding key joint structure decouples the axial sliding and circumferential rotation of the pull rod, allowing independent control of jaw opening and closing and working component steering without interference.

The forceps head assembly comprises an outer sleeve, a pull wire and a forceps head, the forceps head is of an integrated U-shaped structure, the forceps head comprises two elastic arms which are opened outwards, forceps grooves are formed in the end portions of the elastic arms, and after the two forceps grooves are closed, a containing cavity for containing biopsy tissue is formed; the outer sleeve is in a hollow tube shape, the forceps head is telescopically arranged in the outer sleeve, and the pull wire penetrates through the outer sleeve and then is connected with the rear end of the forceps head. The utility model provides the integrally formed U-shaped tong head, the structure is simple, the use is convenient, the opening and clamping of the jaw can be realized by utilizing the pull wire to drive the tong head to stretch out and draw back, the length of the tong head assembly is greatly shortened, the tong head assembly is easier to stretch out under the limit bending angle of the endoscope, the positioning deviation caused by the overlong tong head can be avoided, and the working efficiency is improved. And the operation reliability and accuracy are improved. And moreover, the opening and clamping of the jaw are controlled by directly pulling the wire, so that the response is faster, the forceps head can be quickly extended and retracted, the adjustment time is shortened, and the operation time is shortened.

The application discloses an elastic positioning assembly, which comprises a vertically-installed motor, a clamping jaw base driven to rotate by the motor, and a clamping assembly installed on the clamping jaw base; the clamping jaw base is provided with a positioning groove I and a positioning groove II; the clamping assembly comprises an electromagnet arranged in the positioning groove I, clamping jaw opening and closing blocks symmetrically arranged in the positioning groove II, a guide rod vertically arranged on the upper side of the clamping jaw opening and closing blocks, and a clamping jaw plate arranged on the upper surface of the clamping jaw base; a spring I is arranged between the two clamping jaw opening and closing blocks; the inner side of the clamping jaw plate is provided with a hollow groove, a spring II is horizontally and symmetrically arranged in the hollow groove, and clamping jaws are respectively arranged at the extension ends of the spring II and opposite to each other; a driving hole corresponding to the guide rod is further arranged on the clamping jaw plate, so that the clamping jaws are driven to relatively approach or separate by the guide rod. The application is easy to mass-produce, only needs a set of driving motor matched with the electromagnet, and can effectively rotate and position electronic components, thereby effectively reducing the manufacturing and assembling and maintenance costs.

The invention relates to the technical field of medical anastomat manufacturing, in particular to an anastomat which is reasonable in structure, easy and convenient to operate and capable of achieving time-delay-free opening and closing of a jaw and manually controlling opening and closing of the jaw. The nail abutting seat and the nail bin jointly form an anastomat jaw, the I-shaped knife is located behind the jaw, the holding and operating portion is provided with a main framework, a transmission rack component coaxially arranged along the supporting sleeve is arranged at the top of the main framework, the I-shaped knife is connected with the transmission rack component through an I-shaped knife pull rod in the supporting sleeve, and the I-shaped knife pull rod is connected with the I-shaped knife. A motor used for driving the transmission rack component is arranged on the lower rear portion of the main framework so as to drive the transmission rack component to pull the cutter pull rod to push the I-shaped cutter to close a jaw or pull the I-shaped cutter back to open the jaw, and compared with the prior art, the manual opening and closing driving mechanism is further arranged, the operation delay situation is avoided, the hidden danger of misoperation is eliminated, and the working efficiency is improved. And the safety of the instrument is improved.

The present application relates to the field of medicine container packaging, and specifically discloses a clamping device (1) for clamping containers, the clamping device (1) comprising: a first clamping leg (11); a second clamping leg (12), the first clamping leg (11) and the second clamping leg (12) being movable relative to each other to achieve a clamping state and a release state; a coordination mechanism (13) for coordinating the movement of the first clamping leg (11) and the second clamping leg (12) to achieve the clamping state and / or the release state; and a transmission mechanism (14) configured to allow the clamping state and / or the release state to be achieved by transmitting a driving action to the first clamping leg (11) only. A corresponding denesting and nesting device is also disclosed. According to certain exemplary embodiments, the clamping jaw opening and release are rapid, light in weight, the opening angle is convenient to adjust, the clamping effect is consistent, and the flexible clamping jaw can stably clamp the container during high-speed movement.

The utility model belongs to the field of medical instruments, and provides a fixator applied to a jaw opening of an endoscope, the fixator mainly comprises a lower connecting seat, an upper connecting seat and an elastic fixing piece, the lower connecting seat is provided with a first buckle and a first threaded section, and the first buckle is matched with a first clamping groove of the jaw opening of the endoscope; the upper connecting base is detachably arranged on the lower connecting base and provided with a second threaded section matched with the first threaded section, the elastic fixing piece is provided with a third through channel and arranged on the upper connecting base or the lower connecting base, and when the first threaded section and the second threaded section are fixed in a matched mode, the third channel of the elastic fixing piece is compressed; and when the first threaded section is separated from the second threaded section, the third channel of the elastic fixing piece recovers to the initial state. By the adoption of the structure, elastic contraction of the third channel can be achieved only through rotation, so that the outer sheath arranged in the third channel is extruded, the outer sheath is fixed relative to the jaw opening, and the risk of target missing is avoided.

This invention discloses a handheld release forceps with multi-degree-of-freedom adjustable angle stiffness for arthroscopic surgery. It includes a handheld operating device, a continuous segment, and the release forceps. The handheld operating device and the release forceps are respectively installed at the beginning and end of the continuous segment. The handheld operating device includes: a housing; a vertical bending drive assembly installed inside the housing; a horizontal bending drive assembly installed inside the housing; and a jaw opening and closing drive assembly installed at the bottom of the housing, used to control the opening and closing angle of the release forceps. A locking component is installed inside the housing, and the locking component engages with the vertical bending drive assembly and the horizontal bending drive assembly for limiting their movement. This invention can adapt to the complex anatomical structure of the joint cavity, flexibly reach blind spots, and maintain precision and stability during surgical operations, thereby improving surgical efficiency and reducing patient trauma.

The constant-temperature bathtub comprises a bathtub body, a boss is arranged at the bottom end in the bathtub body, a cavity is formed in the boss, a constant-temperature structure is arranged in the cavity, and two mounting pipes are arranged on one side of the top end of the boss. By means of the clamping air bags arranged in the arc shape, a circular gap is jointly formed between the two clamping air bags, the neck of a newborn can be effectively wrapped, and due to the fact that the top faces of the clamping air bags are arranged in the arc shape, the clamping air bags can be used for being opened and closed with the lower jaw of the head of the newborn and making contact with the rear sides of the ears and supporting the rear sides of the ears. The neonatal head lifting device has the advantages that the neonatal head lifting device can effectively lift the head of a neonatal during medicated bath, water inhaling of the neonatal can be effectively avoided, the ears of the neonatal are positioned above the clamping air bags, liquid medicine can be effectively prevented from entering the ears of the neonatal, and safety of the bathtub can be effectively improved.

The utility model provides a chuck suitable for a large tissue embedding frame and a pathological slicer, the chuck suitable for the large tissue embedding frame comprises a base with a fixed jaw, a movable jaw and a jaw opening degree adjusting device, the movable jaw is installed on the base with the fixed jaw through the jaw opening degree adjusting device, and the movable jaw is installed on the base with the fixed jaw through the jaw opening degree adjusting device. And a jaw of an inverted buckling structure with a small outer end opening and a large inner end opening is formed between the movable jaw and the fixed jaw. According to the utility model, the embedding frame is contained in the jaw by virtue of the jaw with the inverted buckling structure, and the embedding frame can be tightly attached to the inner surface of the base after being clamped, so that the phenomenon that the embedding frame is loosened in a slicing process is prevented.

The utility model relates to an air pipe posture adjusting device which solves the technical problem that in the operation process of automatic winding and packaging equipment of an existing infusion apparatus, the posture of an air pipe in a rolled infusion apparatus is not fixed, so that the rolled infusion apparatus cannot enter a packaging bag smoothly and reliably. The clamping device comprises a translation mechanism, a clamping jaw opening and closing driving mechanism, a left clamping jaw and a right clamping jaw, the clamping jaw opening and closing driving mechanism is connected with the translation mechanism, the left clamping jaw and the right clamping jaw are connected with the clamping jaw opening and closing driving mechanism, and the left clamping jaw and / or the right clamping jaw are / is connected with a limiting plate. The automatic winding and packaging device is widely applied to the technical field of automatic winding and packaging of infusion sets.

The application belongs to the technical field of ultrasonic knives, and particularly relates to an ultrasonic knife, a use method, a jaw opening degree and a jaw pressure detection method. The device comprises a sliding block, a knife rod assembly, a trigger sleeve and a mounting sleeve. The front end of the mounting sleeve is hingedly connected with a jaw, the driving arm of the jaw is connected with the trigger sleeve, the trigger sleeve is connected with the sliding block, so that the trigger sleeve slides under the driving of the sliding block, the jaw is driven to be attached to the knife body to complete the closure of the jaw, the side wall of the mounting sleeve is provided with a displacement sensor, the side wall of the trigger sleeve is provided with a detection ring, the detection ring is suitable for being detected by the displacement sensor, the displacement distance of the trigger sleeve is detected and transmitted to a controller, the closure state of the jaw is judged by the controller, the displacement distance of the trigger sleeve is detected by the displacement sensor, the rotation amount of the jaw is judged by the controller, and the closure state of the jaw is judged.

The biopsy forceps comprise a handle assembly, a forceps rod assembly is connected to the upper portion of the handle assembly, the forceps rod assembly comprises a spring tube, a plurality of limiting clamping sleeves are evenly arranged at the positions, close to a forceps head assembly, of the outer portion of the spring tube in a sleeved mode, clamping sleeves are clamped outside the limiting clamping sleeves, and the limiting clamping sleeves are connected with the clamping sleeves in a sleeved mode. A lubricating liquid cavity for storing lubricating liquid is formed in the clamping sleeve, a liquid outlet groove communicated with the lubricating liquid cavity is formed in the clamping sleeve, and an elastic piece penetrating out of the lubricating liquid cavity from the liquid outlet groove is fixedly connected to the inner wall of the lubricating liquid cavity. And the distance between two symmetrical points on the peripheries of the middle parts and the lower parts of the two elastic sheets is greater than the diameter of the widest part of an endoscope jaw opening. According to the utility model, the length of the forceps head assembly extending out of the endoscope forceps channel can be selected according to the condition of an affected part in the body of a patient, so that the situation that the forceps head assembly is too long in the body of the patient and accidentally hurts normal tissues of the patient is avoided, the safety of using products by an operator is greatly improved, and accidental injury is reduced.