31results about How to "Limit depth" patented technology

The invention discloses a multi-freedom-degree drilling device used in the orthopedics department. The multi-freedom-degree drilling device comprises a first supporting base, a second supporting base, a first telescopic adjustor, a second telescopic adjustor, a first adjusting sleeve, a second adjusting sleeve, a first supporting rod, a second supporting rod, a first damping spring, a second damping spring, a first threaded adjusting rod and a second threaded adjusting rod. A top supporting plate is installed at the upper ends of the first supporting rod and the second supporting rod, a sliding track is installed at the lower end of the top supporting plate, a sliding seat is installed on the sliding track in a sliding mode, an air cylinder is installed at the lower end of the sliding seat, the first supporting rod is fixedly installed on the left side of the air cylinder, the second supporting rod is fixedly installed on the right side of the air cylinder, a rotating motor is installed between the first supporting rod and the second supporting rod and drives a rotating shaft to rotate, a drilling head is installed at the lower end of the rotating shaft, and an elastic sleeve is arranged outside the rotating shaft. A base is arranged below the drilling head.

The invention relates to a double-headed scalpel with protective covers. The double-headed scalpel comprises a handle, a first blade, a second blade and two protective covers, wherein the first blade and the second blade are arranged at the two ends of the handle respectively, and each protective cover comprises a pin rod, a first protective piece, a second protective piece, a first elastic piece and a second elastic piece. Pin holes are formed in the scalpel back, and the pin rods are positioned in the pin holes and are in tight contact and match with the pin holes. The inner ends of the first elastic pieces and the inner ends of the second elastic pieces are connected with the upper portions of the pin rods respectively, the upper portions of the first protective pieces and the upper portions of the second protective pieces are connected with the outer ends of the first elastic pieces and the outer ends of the second elastic pieces respectively, and the lower ends of the first protective pieces and the lower ends of the second protective pieces are provided with blunt portions facing cutting edges. By means of the two blades, demands for cutting various tissues are met, and delay of operations is avoided. The protective covers protect the cutting edges, so that the safety of the double-headed cutting edges is ensured. The blunt portions at the lower ends of the first protective pieces and the lower ends of the second protective pieces form blocking surfaces to limit the feeding depth of the scalpel, so that the operations are more accurate, patients' pain is alleviated, and the double-headed scalpel is safer and more reliable.

The invention provides a wavelength tunable exposure machine alignment system and method. The alignment system includes: a light source component, wherein the light source component comprises a firstwavelength tunable laser and a second wavelength tunable laser, and a wavelength signal controller controls the first wavelength tunable laser, wherein the first wavelength tunable laser and the second wavelength tunable laser can provide lasers with tunable wavelengths. The wavelength signal controller controls the first wavelength tunable laser and the second wavelength tunable laser to emit laser with specified wavebands. . A light source used for pattern alignment can be selected or optimized by adjusting the wavelength of the light source, so that better or more stable product overlay performance is obtained; in addition, a remediation scheme can be provided to deal with the situation of abnormal alignment patterns caused by unstable process.

The invention relates to a scalpel with a limiting protection function. The scalpel comprises a scalpel handle, a blade, a bottom plate, a support, a rotating shaft and at least one lifting mechanism. The blade is mounted at the lower end of the scalpel handle, the support is mounted on the bottom plate, and a notch is formed in the upper end of the support; the upper end of the scalpel handle is rotatably mounted in the notch through the rotating shaft, the blade extends to the position below the bottom plate from the edge of the bottom plate, the lifting mechanism is mounted on the bottom plate, and a power output end of the lifting mechanism is connected with the middle-lower portion of the scalpel handle. The bottom plate, the support and the lifting mechanism are provided, the bottom plate is used as a supporting face and a reference plane of the scalpel, and the lifting mechanism is used for adjusting the exposing size of the blade below the bottom plate, so that the scalpel feeding depth is limited, the condition that the scalpel is fed to shallow or too deep is avoided, an operation is more precise, pain of patients is reduced, and the scalpel is safer and more reliable; in addition, the lifting mechanism is used for adjusting the exposing size of the blade anytime, and the scalpel feeding depth is adjusted anytime according to requirements of operations.

The invention discloses an acupuncture needle pushing device which comprises a device body, a shell, electric telescopic rods, a barrier, a positioning hole, a limit plate, a fixing assembly, a needledischarge outlet, a fixing disc, a knob, buckles, support legs, first movable rods, a connecting tip, second movable rods, fixing seats, a laser positioning head, a handle, a switch, a rechargeable lithium battery, a needle feed inlet and grooves. The shell is arranged on the outer side of the device body, the support legs are connected with two sides of the shell, the electric telescopic rods are mounted on one side of the inside of the shell, the laser positioning head is mounted on the other side of the inside of the shell, the rechargeable lithium battery is embedded in an end of the laser positioning head, the connecting tip is arranged on the side, which is close the limit plate, of an end of the device body, and the handle is connected with the bottom of the device body. The acupuncture needle pushing device has the advantages that the acupuncture needle pushing device is provided with fixable devices and has precision positioning and needle pushing depth control functions, andaccordingly the use safety and the usability can be enhanced.

The invention provides a touchpad and an electronic device. The touchpad and the electronic device have excellent structural performance. The touchpad comprises a circuit board, the upper surface of the circuit board is provided with a touch electrode layer, and the circuit board is used for sensing the touch position of a finger when the finger touches or presses the touchpad and outputting a corresponding touch sensing signal; the support is arranged below the circuit board and comprises a main body part and four extension parts extending from four corners of the main body part to the direction away from the main body part, and cantilever beams are arranged at the tail ends of the extension parts; the pressure sensor is arranged between the circuit board and the bracket, is positioned on the cantilever beam and is used for generating deformation when a pressing force generated when a finger touches or presses the touch panel is transmitted to the cantilever beam and outputting a corresponding pressure sensing signal; and the touch controller is mounted and fixed on the circuit board, is electrically connected with the touch electrode layer and the pressure sensor, and is used for determining the touch position of a finger on the touchpad and the pressing force of the finger according to the touch sensing signal and the pressure sensing signal.

The present invention discloses a quick conductive paste filling device based on an electrode cap. The device comprises a plurality of flexible elastic belts and a plurality of suction injection ballsarranged on the elastic belts, and when the elastic belts are bent to have the same radian as the electrode cap, and the suction injection balls on the elastic belts are correspondingly inserted intoelectrode cavities in the electrode cap one by one. The plurality of the suction injection balls are arranged on the plurality of the flexible elastic belts, distribution of the suction injection balls on the whole filling device is consistent with distribution of electrodes on the electrode cap to be injected, as the elastic belts have certain elasticity, certain elastic belts can be bent to beattached to the electrode cap, suction ports of the plurality of the suction injection balls are inserted into the cavities of the electrode cap, by manually pressing the injection balls, conductive paste filling of the plurality of the electrode cavities is completed at one time, whole filling time can be shortened to 5 minutes, working efficiency is greatly improved, and data recording of brainelectrical activities is more accurate.

The invention relates to a steel lined anti-corrosion pipeline. The steel lined anti-corrosion pipeline includes more than two inner pipelines provided with anti-corrosion layers on the inner surfaces. The inner pipelines are externally provided with steel lined outer pipelines. The steel lined outer pipelines are externally provided with the anti-corrosion layers. A connecting pipe is connected between each two adjacent inner pipelines. The inner walls of the inner pipelines are provided with limiting channels for penetrating and inserting of the connecting pipes. The tail ends of the limiting channels are provided with limiting steps. A fixing ring covering the connecting pipe is arranged between each two adjacent inner pipelines. The fixing ring is provided with interlocking locking supporting frames. The steel lined anti-corrosion pipeline has the advantages that the inner pipelines are internally provided with the limiting channels and the limiting steps, the penetrating and inserting connecting of the connecting pipes are facilitated, a limiting effect is played to depth of the penetrating and inserting, and fixing is convenient; and fixing rings cover the exterior of the connecting pipes, bare corrosion of the connecting pipes is avoided, and the service life of the pipeline is prolonged.

The invention discloses a hand-held deep-loosening weeding machine, belongs to agricultural machinery, and aims to provide the agricultural machinery which is suitable for being used in cultivated land in mountain areas, has functions of soil plough and weeding, and can adjust a deep-loosening angle and depth. The weeding machine comprises a walking power machine, a weeding mechanism and a deep loosening mechanism, wherein the weeding mechanism and the deep loosening mechanism are connected with the walking power machine; the weeding mechanism is composed of a knife rest (9) fixed on two sidesof a gear box (11), a rotating shaft (9-3) supported on two knife rests (9), a driving chain wheel (9-1) fixed on an output shaft of the gear box (11), a driven chain wheel (9-4) and a weeding hob (8) fixed on the rotating shaft (9-3), and a chain (9-2) for connecting the driving chain wheel (9-1) and the driven chain wheel (9-4); and the deep loosening mechanism is composed of a deep loosening plough (10) connected with the gear box (11) in a hinge mode and a hydraulic cylinder (6) which is connected with the gear box (11) and the deep loosening plough (10) in the hinge mode. The hand-held deep-loosening weeding machine has the advantages of being simple in structure, convenient to use, high in efficiency, and suitable for being used in the cultivated land in the mountain areas.

The invention discloses an adjustable-thickness maxillary osteotomy positioner and belongs to the technical field of medical equipment for plastic surgery; the adjustable-thickness maxillary osteotomy positioner comprises a nasal retainer, a buccal retainer, a buccal mucosal tension-compression plate, a handle and at least three guide plates. The nasal retainer and the buccal retainer are joined at the tail ends to form the handle, the buccal mucosal tension-compression plate is connected to the front end of the buccal retainer, the buccal retainer is provided with a slot for mounting the guide plates, two ends of each guide plate are provided with through holes, two ends of the slot are provided with a guide plate limiting post and a guide plate adjusting screw respectively which run through the guide plates along the through holes, and the guide plates are arranged along the width of the slot sequentially in parallel. The problems of poor osteotomy thickness precision and unparalleled cut planes in existing maxillary osteotomy are avoided; since the guide plates of the positioner may be adjusted up and down in the slot along its with, the positioner may adapt to the cut-off under different bone thicknesses during maxillary osteotomy.

The invention discloses a beating and pulling limiting system for knee joint revision. The beating and pulling limiting system comprises a beating and pulling device. The instrument is located on one side of the beating and pulling device and connected with the beating and pulling device; the limiter is connected with the beating and pulling device and is used for limiting the beating and pulling depth of the beating and pulling device; wherein the limiting stopper comprises a limiting stopper body, and the limiting stopper body is in sliding connection with the beating and pulling device; the button is located on one side of the limiting stopper body and rotationally connected with the limiting stopper body, and lock teeth are arranged at one end of the button and correspond to a plurality of teeth arranged on the striking and pulling device; one end of the elastic body abuts against the limiting stopper body, and the other end of the elastic body abuts against the button. According to the punching and pulling limiting system, the osteotomy action on the thighbone side is combined with the hole filing action, the operation of an intramedullary rod is replaced with the punching and pulling device, the osteotomy amount is determined with the hole filing depth as the reference, and the technical effects that the number of operation steps is reduced, the operation reference is unified, and the osteotomy precision is improved can be achieved.

The invention provides a neonatology department milk injector convenient to use, and relates to the technical field of infant nursing, the neonatology department milk injector comprises a shell channel, the front end of the shell channel is fixedly provided with a passing bin; an air channel is integrally formed in the bottom of the inner side of the shell channel, and the middle of the air channel is of an L-shaped structure which is bent backwards. The driven shaft is rotationally arranged at the top of the air channel; according to the pressurizing barrel of each embodiment of the invention, a pre-pressurizing function is provided, the sliding pipe is pulled outwards, external air penetrates through the one-way valve B to enter the pressurizing barrel, pressure is generated through the cooperation of the piston piece and the reset of the spring, air pressure is provided, and the pressurizing effect is improved. And the scales can be used for quantifying, so that the problems that the limiting effect of the milk injector used at present is insufficient, and the pre-pressurization speed-controllable injection function is lacked are solved.

The invention provides a special tool for assembling a circuit breaker contact, which comprises a sleeving piece, a through hole corresponding to a contact process hole is formed in the sleeving piece, the special tool further comprises a plug pin mounted on the sleeving piece, the plug pin is provided with a locking end which penetrates through the through hole and is inserted into the process hole, and a stop structure is arranged on the outer surface of the plug pin. The depth of the bolt inserted into the process hole is limited; the special tool further comprises an elastic piece arranged outside the plug pin, the plug pin is provided with an unlocking station and a locking station, the unlocking station enables the elastic piece to be stressed and deformed when the plug pin is pulled out, the locking end retreats to the position where the sleeving piece can be arranged outside the contact in a sleeving mode or the sleeving piece can be disengaged from the contact, and the locking station enables the locking end to be inserted into the auxiliary hole under the reset acting force of the elastic piece. Mounting or dismounting of the sleeving piece can be achieved by pulling out the plug pin, the locking end can be inserted into the contact auxiliary hole by loosening the plug pin, use is very convenient, the assembling efficiency can be improved, meanwhile, the plug pin is arranged on the sleeving piece, the plug pin can be prevented from being lost, and assembling work can be conveniently carried out.