16 results about "Retraction cord" patented technology

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 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 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 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 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 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.

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.