28 results about "Retraction cord" patented technology

The invention belongs to the technical field of medical instruments, and discloses a full-suture anchor assembling device, a full-suture anchor implanting device and an assembling method.The full-suture anchor assembling device comprises a clamping piece and a guiding piece, the clamping piece is provided with a clamping groove for containing an anchor body, and the guiding piece is arranged at an opening of the clamping groove and comprises two oppositely-arranged clamping pieces; the guide piece can be inserted into the fixing groove, the two clamping pieces can be far away from each other to form a guide channel, the two ends of the guide channel are communicated with the clamping groove and the fixing groove respectively, and the nail body can be clamped in the fixing groove through the guide channel. The full-suture anchor implanting device comprises an implanting rod and an operation assembly, the implanting rod can be movably and detachably connected to the operation assembly along the axis of the implanting rod, the fixing groove is formed in the end, away from the operation assembly, of the implanting rod, and the two traction lines at the two ends of the anchor body are both connected to the operation assembly. According to the assembling method, the rivet body is not damaged in the assembling process of the full-suture rivet, and the full-suture rivet implanting device is repeatedly used.

The invention provides an in-vitro orthodontic force testing tool and a force applying method based on enamel crack characteristics, and the tool comprises a die body which comprises a bionic gingiva, experimental teeth and a connecting piece; the rotary fixing mechanism comprises a rotary table, an assembly table and a clamping piece, the rotary table can rotate by a preset angle, a mounting groove is formed in the assembly table, the die body is arranged in the mounting groove, and the clamping piece clamps the bionic gingiva; the traction mechanism is connected with a traction line, and the traction line can move or rotate along a straight line. Different acting forces are given to the die body through the interaction of the rotating mechanism and the traction mechanism, so that the orthodontic force capable of avoiding tooth injury is tested. The device not only can be used for respectively adjusting tension, pressure, lateral traction force, rotary traction force and torque force, but also can be used for simulating the composite action of various forces, so that the test result is highly matched with the actual orthodontic process. The system has the advantages of rich functions, high simulation degree, accurate test result, wide application range and the like.

The invention relates to the technical field of medical instruments, and discloses an ESD operation exfoliated tissue traction opening device. The device comprises a ground anchor, an external channel pipe, a traction rope and a tension spring assembly. The anchors are respectively fixed on the edge of the tissue to be stripped and the wall of the alimentary canal on the opposite side; the external channel tube is arranged outside the endoscope, is used for conducting the traction rope and is detachably connected with the endoscope through a fixing structure; the tension spring assembly comprises a fixing plate, a sliding block, a sliding rod, a tension spring, a circular ring and a hanging ring, wherein the circular ring and the hanging ring are used for connection. Continuous traction force is applied to the traction rope through elastic deformation of the tension spring. Through automatic continuous traction, the edge of the stripped tissue is kept in an open state, the surgical field is effectively improved, and the operation convenience and safety of an ESD surgery are improved.

The anastomosis assembly comprises a nail abutting seat, a traction tube and a traction line, the nail abutting seat comprises a nail abutting seat top cover, a guide shaft and an auxiliary puncture head which are connected in sequence, the traction tube is connected to the nail abutting seat top cover, and the traction line is connected to the auxiliary puncture head; the anastomat comprises an anastomat body, a nail bin and a puncture needle, the anastomat body is provided with an adjusting device used for adjusting the position of the puncture needle and a percussion device used for pushing out suturing nails in the nail bin, the anastomat further comprises the anastomosis assembly, the auxiliary puncture head is detachably connected to the guide shaft, and the puncture needle is connected with the guide shaft where the auxiliary puncture head is detached in a matched mode. And a top cover of the nail propping seat is matched with the nail bin. According to the utility model, the nail propping seat can be smoothly and accurately dragged to an anastomosis part, the direction is not easy to deviate in the traction process, the digestive tract is not easy to damage, the operation is simple, convenient and quick, the time and labor are saved, the anastomosis effect is good, and the suture efficiency of a doctor in a surgical operation is further improved.

The utility model discloses a medical skeleton fixing nail, and relates to the field of medical instruments. The bone fixing nail comprises a bone fixing nail, a thread lapping seat, a thread clamping pile and a dismounting seat, the thread lapping seat comprises a sleeve seat, a spring groove is formed in the inner wall of the sleeve seat, and through the arrangement of the thread lapping seat, the spring groove, a spring, a clamping ball and the thread clamping pile, when bone fixing nail operation is carried out on a patient, firstly, a plurality of nail heads need to penetrate into the sleeve seat; then, it is ensured that the fixing block and the sleeve base are in a clamped connection state, then a plurality of nail heads need to be driven into a fracture position or a position where bone correction needs to be conducted, then a wire needs to be pulled to be placed into a wiring groove according to the situation, then a wire pressing column needs to be arranged in the sleeve base, and a clamping ball can be clamped into a clamping groove under the pushing effect of a spring; therefore, it is ensured that the wire pressing column can be effectively locked and fixed to the sleeve base, the wire pressing column is prevented from falling off due to operation, and meanwhile the installation difficulty of the wire pressing column can be lowered.

The utility model relates to the technical field of medical instruments, in particular to an orthodontic appliance for pushing molar backwards, which comprises a traction wire, a plurality of stop blocks, a correction unit and two traction components, each traction component comprises a connecting wire, a lantern ring, a shell, a spring and a circular ring, the connecting wire is arranged above the correction unit, the lantern ring is fixedly connected with the connecting wire, and the shell is arranged above the connecting wire. The pull wire penetrates through the lantern ring, the shell and the check blocks, the shell is fixedly connected with the lantern ring, the pull wire is fixedly sleeved with the circular ring, and the two ends of the spring are fixedly connected with the inner wall of the shell and the circular ring respectively. The plurality of stop dogs are respectively attached to the labial muscle, and then the traction wire is always pulled backwards under the elastic action of the spring, so that counter-acting force and counter-acting force are applied, the plurality of stop dogs always keep counter-acting force with the labial muscle, anterior teeth are prevented from inclining towards the lip side, the spring is wrapped by the shell, and the situation that the anterior teeth incline towards the lip side when the spring stretches out and draws back is prevented. And when the spring clamps lip muscles in the oral cavity, the user is injured.

The utility model discloses a tooth correcting device. Belongs to the technical field of orthodontics, the orthodontic appliance comprises a plurality of fixing pieces, a connecting piece and a traction assembly, the fixing pieces are suitable for being fixed on a plurality of anchorage teeth in a one-to-one correspondence mode, the traction assembly comprises a traction hook, a connecting buckle and a traction line, the traction hook is provided with a traction end and a connecting end, the traction end is located on the lingual side of an affected tooth, and the connecting end is connected with the connecting piece; or the traction end is located on the cheek side of the diseased tooth, the connecting end is connected with the fixing piece, the connecting buckle is bonded to the side, facing or away from the traction end, of the diseased tooth, and the traction end is connected with the connecting buckle through a traction line so as to apply correction force for correcting jaw locking to the diseased tooth, so that the diseased tooth is reset towards the interior of the alveolar bone, and correction of jaw locking of the diseased tooth is achieved. The traction ends are located on the sides, away from the occlusal surface, of the gingival edges of the corresponding diseased teeth, correction force comprises gingival press-in force, and the diseased teeth can be effectively prevented from stretching in the correction process.

This invention relates to the field of medical device technology, disclosing a suture traction device and its application method. The suture traction device is used to pull the suture into the nail body of a full suture anchor assembly. The side wall of the traction box has two holes for passing the traction suture through. The traction cover has a first winding post for winding the traction suture, and the traction base has a second winding post for winding the traction suture. The base is detachably connected to the traction base and has multiple limiting posts for winding the traction suture. The limiting posts pass through the side wall of the traction base and extend into the receiving cavity. Each first winding post has limiting posts on both sides. This invention significantly reduces the frictional resistance between sutures at the pre-placed knot and between the suture and the nail body during suture traction, preventing the pre-placed knot from tightening during traction, allowing the suture to smoothly pass through the nail body, greatly reducing traction resistance, and preventing suture cuts to the surgeon during traction.

The present invention relates to a manufacturing method of a full-suture outer-row anchor assembly and a full-suture outer-row anchor assembly, belonging to the technical field of medical devices. Specifically, a traction line and an outer-row nail body are prefabricated in a preformed knotted disk, and the inner-row anchor suture is introduced into the passage of the preformed knotted disk by using the traction line, so that the inner-row anchor suture replaces the traction line and is inserted into the outer-row nail body, and a knot-free structure is formed when it is turned back, thereby solving the problem that the inner-row anchor suture is difficult to introduce into the outer-row nail body composed of full sutures, and knot-free can be achieved at the same time; during the operation, it is only necessary to connect the inner-row anchor suture to the wire loop end of the traction line, and the free end of the traction line is pulled to complete the two operations of introducing the inner-row anchor suture into the outer-row nail body and forming the knot-free structure at one time, thereby simplifying the surgical operation and saving the surgical time. At the same time, the multi-directional routing of the inner-row anchor suture in the outer-row nail body and the knotting in the bone canal ensure the fixing stability of the full-suture outer-row anchor to the inner-row suture.

The invention discloses a three-dimensional traction device for an embedded maxillary tooth, and the traction device comprises a fixed band ring structure which is used for sleeving a deciduous molar or a bicuspid or a first permanent molar on two sides; the connecting structure is fixedly connected with the fixing band ring structures on the two sides and comprises an alveolar arch and a retention piece which are fixedly connected with the fixing band ring structures respectively, the alveolar arch is located on the lip-cheek side, and the retention piece is located on the palate side; the porous traction structure is located between the alveolar arch and the retention piece, the two ends of the porous traction structure are fixedly connected with the alveolar arch and the retention piece respectively, the porous traction structure is in a cross shape, the included angle is adjustable, a plurality of through holes are formed in the porous traction structure, and the through holes are connected with embedded teeth through traction wires. Meanwhile, the rigidity of the connecting structure and the bearing force of the teeth are used for jointly resisting counter-acting force in multiple directions generated when the embedded teeth are dragged, anchorage is enhanced, and the tooth-embedded tooth traction device is suitable for children in the tooth replacement period and the tooth permanent period.

The invention relates to the technical field of medical instruments, and discloses a suture traction device and an application method thereof. Wherein the suture traction device is used for pulling a suture into a nail body of the full-suture anchor assembly, the side wall of the traction box is provided with two routing holes for a traction line to penetrate through, the traction cover body is provided with a first wrapping post for winding the traction line, and the traction bottom shell is provided with a second wrapping post for winding the traction line; the base is detachably connected to the traction bottom shell, the base is provided with a plurality of limiting columns used for winding traction wires, the limiting columns penetrate through the side wall of the traction bottom shell and extend into the containing cavity, and the limiting columns are arranged on the two sides of each first winding column. In the process that the traction line pulls the sutures, the friction resistance between the sutures at the preset line knot and between the sutures and the nail body is greatly reduced, the preset line knot is prevented from being tightened in the traction process, the traction line smoothly pulls the sutures to penetrate through the nail body, the traction resistance is greatly reduced, and an operator is prevented from being cut by the sutures in the traction process.

The application discloses a device for taking out an IUD, and relates to the technical field of gynecological instruments, comprising a measuring unit arranged in each jaw; the measuring unit comprises a plurality of jaw teeth hingedly connected to the interior of the jaw, a traction line penetrating through the interior of the jaw and the handle and being in contact with the jaw teeth, a traction part fixed to the end of the traction line, and a first spring sleeved on the outside of the traction line. The device has the beneficial effect that the cooperation between the jaw teeth arranged in the jaw and the traction line, and the characteristic difference between the reaction force of the hard IUD and the soft uterine tissue on the jaw teeth are utilized to realize the accurate identification and feedback indication of the target material.

The utility model belongs to the technical field of medical instruments, and particularly relates to an operation drag hook which comprises a hook piece used for hooking soft tissue of a human body and a supporting mechanism arranged at the tail end of the hook piece and used for fixing the hook piece. The supporting mechanism comprises a wire hanging plate connected with the tail end of the hook piece, pull wires movably connected to the two ends of the wire hanging plate, a supporting plate arranged at the tail ends of the pull wires and used for positioning the hook piece, and a fixing plate connected with the outer side wall of the supporting plate. The rotating roller is rotationally connected to the fixing plate and used for adjusting the distance between the hook piece and the supporting plate, the limiting column is arranged on the outer wall of the rotating roller, and the fixing assembly is arranged at the end, away from the limiting column, of the rotating roller. In the operation process, the hook piece can be pulled and powered, so that the operation of pulling the drag hook by hands can be replaced, the burden of medical staff is reduced, the opening area of a surgical site pulled by the hook piece can be conveniently adjusted according to actual requirements, and the surgical site is fully exposed.

The present invention relates to a method for manufacturing a full-suture outer-row anchor, a full-suture outer-row anchor and a method for using the same, and belongs to the technical field of medical devices. The full-suture outer-row anchor manufactured by the manufacturing method uses a traction line with a pre-built-in locking knot. During surgery, the traction line is used to introduce the inner row of sutures into the full-suture nail body, that is, the inner row of sutures are introduced into the full-suture nail body along the original path of the traction line in the nail body, thereby solving the technical problem that the inner row of sutures are difficult to introduce into the full-suture outer-row anchor. In addition, the original path of the traction line can be used to form a knot of the inner row of sutures, thereby achieving a technical effect of knot-free. The method for using the full-suture outer-row anchor can effectively prevent the occurrence of situations such as slippage or disintegration of the inner row of nail sutures by an operation mode of implanting first and then guiding the wire, thereby ensuring the feasibility of the surgical operation. The self-locking knot structure is formed by unidirectional tightening, and the operation is more convenient and the knot shape is more reliable, thereby providing reliable support for soft tissue repair and fixation.

The utility model relates to the technical field of medical instruments, in particular to a stone extractor. Comprising a handle, a sheathing canal, a net basket, a first switch and a second switch, and the handle comprises a first main body and a second main body which are connected; the sheath tube is arranged at one end of the second body away from the first body; the net basket comprises a containing part and a pull wire which are connected, the containing part forms a containing cavity with an opening, the opening faces the pull wire, and the net basket can be contained in the sheath tube or extend out of the sheath tube; a first connecting wire and a second connecting wire are fixed on the first switch, and the first switch is slidably arranged on the first main body in the length direction of the first main body; the second switch is slidably arranged on the second body in the length direction of the second body. The first connecting wire penetrates through the second switch to be connected with the pull wire. The second connecting wire penetrates through the second switch to be connected with the containing part, the first connecting wire is fixedly connected with the second switch, and the second connecting wire is movably connected with the second switch. The structure can reduce the difficulty of a calculus removing operation and improve the operation efficiency.

The invention relates to the technical field of skull locks, in particular to an adjustable skull lock capable of avoiding skull sinking, which comprises a connecting piece, and a fixing component for fixing the skull is arranged at the upper end of the connecting piece; a mounting groove is formed in the lower end of the connecting piece, a pull wire is fixedly connected to one side of the mounting groove, and a limiting assembly used for fixing the pull wire is arranged on one side of the upper end of the connecting piece; the limiting assembly comprises a base, the base is fixedly installed on one side of the upper end of the connecting piece, the arc-shaped structure of the longitudinal clamping plate and the design of an anti-skid groove increase the contact area and friction force with a pull wire, and even and stable clamping force can be formed in the longitudinal direction in cooperation with elastic reset force of a reset spring; the second transverse clamping plate is in linkage with the extrusion shaft through a curved inclined limiting groove, complementary extrusion force is applied in the transverse direction, it is guaranteed that the traction line is firmly locked in multiple dimensions through the combined action of the longitudinal clamping face and the transverse clamping face, and the displacement trend generated by the size change of the skull is effectively resisted.

The present invention belongs to the technical field of medical devices, and discloses a full suture anchor assembly device, a full suture anchor implantation device, and an assembly method. The full suture anchor assembly device includes a clamping member and a guide member. The clamping member is provided with a clamping groove for accommodating a nail body. The guide member is provided at the opening of the clamping groove and includes two clamping pieces arranged opposite to each other. The guide member can be inserted into a fixing groove. The two clamping pieces can be separated from each other to form a guide channel. The two ends of the guide channel are respectively connected to the clamping groove and the fixing groove. The nail body can be clamped in the fixing groove through the guide channel. The full suture anchor implantation device includes an implantation rod and an operating component. The implantation rod can be detachably connected to the operating component along its own axis. The fixing groove is provided at one end of the implantation rod away from the operating component. Two traction lines at both ends of the nail body are connected to the operating component. The assembly method ensures that the nail body is not damaged during the assembly of the full suture anchor, and the full suture anchor implantation device can be reused.

The embodiment of the invention discloses a data processing method and device, computer equipment and a storage medium. The method is applied to an oral cavity scanning scene based on a pneumatic gingival retraction scanner, the pneumatic gingival retraction scanner comprises a camera, an air blowing assembly and a scanning head, and the method comprises the following steps: determining an air blowing area corresponding to the air blowing assembly; obtaining an oral cavity three-dimensional model; determining an intersection area between the gas blowing area and the oral cavity three-dimensional model, and determining the intersection area as a current gas blowing area; and when the blowing area indication function is in an open state, displaying the oral cavity three-dimensional model marked with the current blowing area in the current display interface. According to the method provided by the embodiment of the invention, the current blowing area can be displayed in real time through the display interface, so that the user is guided to execute the pneumatic gingival retraction operation through the pneumatic gingival retraction scanner, and the problems of gingival injury and low gingival retraction efficiency when a gingival retraction line is used for gingival retraction treatment are solved.

An eyewear cleaning device (10) has a storage housing (20) with a housing cover (22) and a side flange (24), the side flange (24) having an aperture (26). The device also includes a cleaning cloth (30) with a stop plug (28) at a proximal end (32) and a retraction cord (34) at a distal end (36). The retraction cord (34) is coiled upon a spool (44) of the storage housing (20), and a retraction mechanism (42) biases the spool (44) to retract the retraction cord (34) so that the cleaning cloth (30) is retracted into the storage housing (20) until the stop plug (28) abuts the aperture (26) in the side flange (24) of the storage housing (20). An enclosure tank (50) holds a cleaning fluid, and a pump mechanism (56) pumps the cleaning fluid from the enclosure tank (50) into the storage housing (20) to moisten the cleaning cloth (30).

The invention discloses an intrauterine device ring taking device, and relates to the technical field of obstetrics and gynecology instruments. The measuring unit comprises a plurality of clamp teeth hinged to the inside of the clamp head, a pull wire which penetrates through the inside of the clamp head and the inside of the clamp handle and makes contact with the clamp teeth, a pull part fixed to the end of the pull wire, and a first spring arranged outside the pull wire in a sleeving mode. The intrauterine device has the beneficial effects that accurate identification and feedback indication of a grabbed target material are realized through the matching between the forceps teeth arranged in the jaw and the pull wire and by utilizing the characteristic difference of the counter-acting force of the hard intrauterine device and the soft uterus tissue on the forceps teeth.

This application relates to a full-suture anchor fixation system, belonging to the technical field of medical devices. It includes an inserter and a nail body. The inserter includes a handle, a rotating assembly, and a hollow rod. One section of the hollow rod is inserted into and fixedly connected to the handle. The rotating assembly includes a knob, a stud, and a winding post. The knob is sleeved on the stud and threadedly connected to it. The winding post is positioned above the stud. A left traction suture and a right traction suture pass through the nail body, and the ends of the left and right traction sutures are fixedly connected to at least two connection points on the nail body. The hollow rod has a channel for the traction sutures to pass through. The winding post is movably disposed within the hollow rod and is drivenly connected to the stud. The tip of the inserter has a clamping groove for holding the nail body. This application has the effect of allowing the nail body to smoothly form a bundle during suture preparation.

The present invention provides an in vitro orthodontic force testing tooling and a force application method based on the characteristics of enamel cracks, which include: a mold body, which includes a bionic gingiva, experimental teeth and a connecting piece; a rotation fixing mechanism, which includes a rotating table, an assembly table and a clamping piece, the rotating table can rotate a preset angle, an installation groove is provided inside the assembly table, the mold body is arranged in the installation groove, and the clamping piece clamps the bionic gingiva; a traction mechanism, which is connected to a traction wire, and the traction wire can move or rotate linearly. The present invention applies different forces to the mold body through the interaction of the rotating mechanism and the traction mechanism to test the orthodontic force that can avoid tooth damage. It can not only adjust the tensile force, compressive force, lateral traction force, rotational traction force and torque force respectively, but also simulate the combined action of multiple forces, thereby making the test results highly match the actual orthodontic process. Furthermore, it has the advantages of rich functions, high simulation degree, accurate test results and wide application range.

The application discloses a dental floss cleaning device and method specially used for orthodontic people. The device mainly comprises a dental floss, a dental floss traction line connected with the dental floss and a supporting assembly. In operation, the dental floss traction line is firstly passed through an arch wire of an orthodontic appliance, and then the dental floss is passed through the dental floss traction line; the dental floss is taut and fixed on the supporting assembly by pulling the dental floss traction line, and then the interdental cleaning can be performed. The device can effectively avoid rigid interference with the bracket and the arch wire, and reduce the risk of falling off of the bracket and the arch wire.

The utility model relates to the technical field of medical treatment, and particularly discloses a minimally invasive rib cutting device which comprises a cutting mechanism which is a linear saw. The threading needle is arranged in an arc shape, a cutting edge is arranged on the threading needle, and the end, without the cutting edge, of the threading needle is installed at the end of the linear saw and used for pulling the linear saw to penetrate through a rib; the linear saw comprises a hose arranged on the linear saw in a sleeving mode. According to the utility model, the linear saw is pulled to penetrate through the rib through the threading needle with the arc-shaped design, and then the rib is cut through the linear saw, so that the effect of minimally invasive operation cutting is achieved, and the hose sleeved on the linear saw can prevent the linear saw from hurting body tissues when the linear saw penetrates through the rib; when the linear saw penetrates through a rib, the linear saw can be stretched straight, so that a cutting edge on the linear saw faces the rib consistently, and the injury to muscular tissues is reduced.

This application relates to the field of oral retraction technology, providing a device for adjusting and cutting the length of a retraction line intraorally. The device includes an upper body and a lower body. The lower body has a receiving cavity, and its front end has two parallel thread guide grooves. A tangent groove perpendicular to the thread guide grooves is also provided on the front end of the lower body. One end of the thread guide groove extends to the side of the lower body, and the other end extends to the receiving cavity. A telescopic adjuster with a movement direction perpendicular to the thread guide grooves is provided within the receiving cavity. A thread catcher is elastically mounted on the telescopic adjuster. Both ends of the retraction line pass through the two thread guide grooves and are caught on the telescopic adjuster by the thread catcher. A press-type cutting blade assembly is provided within the upper body. The cutting blade of the press-type cutting blade assembly is movably positioned above the tangent groove and can be inserted into the tangent groove and moved to the bottom to cut the retraction line. This device can adjust the length of the retraction line according to the current cervical circumference of the tooth and can cut it. It is convenient to operate and has good safety.

An eyewear cleaning device has a storage housing with a housing cover and a side flange, the side flange having an aperture. The device also includes a cleaning cloth with a stop plug at a proximal end and a retraction cord at a distal end. The retraction cord is coiled upon a spool of the storage housing, and a retraction mechanism biases the spool to retract the retraction cord so that the cleaning cloth is retracted into the storage housing until the stop plug abuts the aperture in the side flange of the storage housing. An enclosure tank holds a cleaning fluid, and a pump mechanism pumps the cleaning fluid from the enclosure tank into the storage housing to moisten the cleaning cloth.

The utility model discloses a tooth neck dental crown perimeter measuring device which comprises a rod body, the head end of the rod body is rotatably connected with a pressing wheel made of rubber materials, the pressing wheel is provided with a ring-shaped arc-shaped notch, a clamping and matching block is fixed on the rod body, scissors are clamped and matched on the clamping and matching block, the head end of the scissors is flat, the outer end of the rod body is rotatably connected with a dental floss rotating disc, and the dental floss rotating disc is connected with the rod body. And a dental floss is wound on the dental floss turntable. The dental crown circumference measuring device can accurately measure the circumference of a dental crown so as to determine the length of a required gingival retraction cord, can conveniently detect the length of the dental floss in real time by using the dial gauge so as to determine the length of the gingival retraction cord, can adjust the angle of the pressing wheel, can be conveniently applied to the measurement of the circumference of the dental crown in different tooth positions, and is worthy of popularization and application.

The utility model relates to the technical field of oral medical treatment, in particular to a gingival retraction band which comprises a gingival retraction line and a raw material band, one side edge of the raw material band is wound on the outer half circumference of the gingival retraction line, the gingival retraction line and the raw material band are fixedly connected, the gingival retraction line is formed by weaving a plurality of strands of cotton threads and can be bent at any angle, and the gingival retraction band can be bent at any angle. The raw material belt is made of polytetrafluoroethylene and can be bent at any angle; the gingival retraction cord and the raw material belt fixed on the gingival retraction cord are arranged, so that the gingival retraction cord is pressed into a gingival crevicular to retract gingiva, the edge of a cavity is exposed, meanwhile, part of gingival crevicular fluid can be absorbed, compression hemostasis can be realized, and medicines can be added into gaps of the gingival retraction cord to stop bleeding; and moreover, the polytetrafluoroethylene tape made of polytetrafluoroethylene can isolate gingival crevicular fluid and blood from exudation, so that the moisture insulation effect is effectively improved. And shaping is assisted in a mode of overturning the raw material belt, so that the occurrence rate of overhanging or underfilling of the filling body is reduced, and the restoration body has better appearance and firmness.