281 results about "Fixation stability" patented technology

A glenoid component is provided to reduce glenoid loosening when implanted in orthopedic joint replacement / reconstruction, such for a shoulder. The glenoid component can include pegs or a keel and articulating surface geometry that uses complex, non-spherical geometry to recreate a level of constraint that is adequate, but not excessive, to thereby mitigate loosening of the glenoid component after implantation. In addition, some embodiments provide that peak stresses both within cement and at an interface of the cement and a supportive component can be reduced. Further, geometry of the pegs can allow stresses to be evenly applied to a cement mantle formed in the supportive component. Finally, the pegs can be configured to desired lengths in order to avoid placement in areas of the supportive component, for example, that have insufficient bone stock.

A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, and an electronic circuit. The device is configured for measuring vestibulo-ocular reflex, pupillometry, saccades, visual pursuit tracking, vergence, eyelid closure, dynamic visual acuity, retinal image stability, foveal fixation stability, focused position of the eyes or visual fixation of the eyes at any given moment and nystagmus. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system is implemented as part of an impact reduction helmet that comprises an inner frame having interior pads configured to rest against a person's head and one or more shock absorption elements attached between the inner frame and the spherical shell that couple the spherical shell to the inner frame. The spherical shell has a circular geometry, that when viewed horizontally at its horizontal midplane, includes a center point that is the rotational center of the spherical shell. The one or more shock absorption elements are sized to provide greater spacing between the inner frame and the spherical shell at the sides and rear of the spherical shell than at the front of the spherical shell. The one or more shock absorption elements are sized to configure the alignment of the rotational center of the spherical shell with the proximate rotational center of the wearer's head.

A glenoid component is provided to reduce glenoid loosening when implanted in orthopedic joint replacement / reconstruction, such for a shoulder. The glenoid component can include pegs or a keel and articulating surface geometry that uses complex, non-spherical geometry to recreate a level of constraint that is adequate, but not excessive, to thereby mitigate loosening of the glenoid component after implantation. In addition, some embodiments provide that peak stresses both within cement and at an interface of the cement and a supportive component can be reduced. Further, geometry of the pegs can allow stresses to be evenly applied to a cement mantle formed in the supportive component. Finally, the pegs can be configured to desired lengths in order to avoid placement in areas of the supportive component, for example, that have insufficient bone stock.

The invention provides a design method of a personalized 3D printing calcaneal plate based on topological optimization. The design method comprises the steps that firstly, three-dimensional reconstruction of a calcaneal model is conducted; then, a calcaneal outer side curved surface contour is extracted and constructed, construction of a calcaneal curved surface plate prototype and configuration of screws are conducted, and finite element analysis and topological optimization redesigning of a calcaneal prototype plate are conducted; and finally, 3D printing forming is conducted. According to the design method, based on the personalized treatment principle, limitation of traditional design and manufacturing technologies is broken through, the calcaneal height and reposition flatness of thearticular surface are effectively recovered, anatomic form matching and maximization of the fixation rigidity are achieved through combination of 3D printing and personalized manufacturing, and accordingly, the effect of calcaneal fracture plate internal fixation treatment is improved. According to the calcaneal plate designed through the design method, the problems of personalized anatomical compatibility difficult to achieve in a traditional calcaneus internal fixation plate, insufficient fixation stability and complications of related soft tissue of implantation materials are solved, shaping is easy, incisures are lower, biomechanical stability is better, and the risk of post-operation skin flap necrosis is lower.

The invention provides battery case strength detection equipment used for lithium battery production. The battery case strength detection equipment comprises an operating table, a box, a clamping component and a detection adjustment component. The box is fixed on the upper end surface of the operating table. The clamping component is installed in the box. The clamping component comprises supporting rods, connecting cylinders, a moving clamp plate, a first clamping boss, a rolling ball nut holder, a lead screw, a moving groove, a fixed clamp plate, a second clamping boss, clamp grooves, clamp blocks, first slide grooves, through holes, pull rods and second slide grooves. The detection adjustment component is arranged on the right side of the box, and the detection adjustment component is installed on the upper end surface of the operating table. The detection adjustment component comprises an electric elevating column, a carrying frame, a cavity, a gear, a rack and a carrying plate. Compared with the equipment in the prior art, the battery case strength detection equipment has the following beneficial effects that fixing of different shapes of battery cases to be detected can be realized so that the adaptability is high and the fixing stability is excellent; and adjustment of the detection position can also be realized so that the work intensity can be reduced and the detectionefficiency is high.

The invention provides a sectioned degradable plugging device. The sectioned degradable plugging device comprises a net-shaped support. The net-shaped support is formed by knitting degradable yarns and comprises an upper disc face, a lower disc face and a waist for connecting the upper disc face with the lower disc face. An upper membrane arranged on the upper disc face in a covering mode is sewed to the upper disc face. A lower membrane arranged on the lower disc face in a covering mode is sewed to the lower disc face. A flow blocking membrane for transversely blocking the waist is arranged on the waist. The upper membrane, the lower membrane and the flow blocking membrane are made of degradable materials. An inner core connecting rod is arranged in the middle of the lower disc face and connected with the lower membrane into a whole. A clamping structure is arranged in the middle of the upper disc face, and the inner core connecting rod can penetrate through the flow blocking membrane to be clamped on the clamping structure. According to the sectioned degradable plugging device, the structure is used for polymer-class degradable plugging devices, and the problems, caused by the poor mechanical properties of polymer materials, in the rebound resilience, the fixing stability and the like are solved through innovation in the structure aspect.

The invention relates to a reinforced concrete prefabricated overall-poured house structure and a construction method thereof, and belongs to the technical field of house structure systems. Accordingto the key points of the technical scheme, the reinforced concrete prefabricated overall-poured house structure comprises prefabricated floors and wall plates, each wall plate comprises an upper walland a lower wall, the bottoms of the lower walls are fixedly connected with the ground, one floor is erected at the top ends of every two corresponding adjacent lower walls, gaps used for pouring concrete are reserved between the ends, close to each other, of the adjacent floors, the upper walls are located over the lower walls, the bottom ends of the upper walls abut against the top ends, close to each other, of the two adjacent floors, the wall plates are provided with vertically penetrating pouring holes, fixing holes are formed in the positions, on the two sides of the pouring holes, of the upper walls, fixing steel bars matched with the fixing holes are fixedly formed in the upper surfaces of the floors, and the top ends of the fixing holes communicate with the pouring holes. The effect of improving the fixing stability between the floors and the wall plates is achieved.

The invention relates to a type I collagen modified porous titanium coat and a making method thereof. The type I collagen modified porous titanium coat is obtained by fixing type I collagen to the surface of a porous titanium coat in a covalent bond grafting mode by adopting a biochemical modification process. Compared with physically-adsorbed collagen modified porous titanium coats, the covalent-grafted type I collagen modified porous titanium coat has the advantages of about 1 time increase of the fixed collagen amount, good fixing stability, reservation of above 90% after 7d, and good biological performances, and can be applied to promote bone implant materials inducing the growth of bone tissues. The making method has the advantages of simple technology, high efficiency and good repeatability, and provides a new method for medicinal biological coat technologies.

The invention provides a treatment fixing bed for pediatric dentistry. The bed comprises a boss, a rotating bed body, hydraulic lifting columns, connecting columns, a fixed base, a first electric telescopic rod, a shoulder pressing plate, a leg pressing plate and a second electric telescopic rod, the boss is fixed to the right end face of the rotating bed body, the boss is connected with the leftend of a fixed platform through a circular shaft, the fixed base is fixed to the left portion of the lower end face of the rotating bed body, the upper ends of the connecting columns are connected with the fixed base through circular shafts, the lower ends of the connecting columns are fixed to the upper ends of the hydraulic lifting columns, and the lower ends of the hydraulic lifting columns arearranged on the ground. Accordingly, the angle of inclination of children's bodies can be adjusted conveniently, the first electric telescopic rod is installed on the left portion of the upper end face of the rotating bed body, the shoulder pressing plate is installed at the upper end of the first electric telescopic rod, and the leg pressing plate is installed at the upper end of the second electric telescopic rod, so that fixation of bodies of children patients is facilitated; the treatment fixing bed is simple in structure, good in adaptability, good in fixation stability and high in reliability.

A glenoid component is provided to reduce glenoid loosening when implanted in orthopedic joint replacement / reconstruction, such for a shoulder. The glenoid component can include pegs or a keel and articulating surface geometry that uses complex, non-spherical geometry to recreate a level of constraint that is adequate, but not excessive, to thereby mitigate loosening of the glenoid component after implantation. In addition, some embodiments provide that peak stresses both within cement and at an interface of the cement and a supportive component can be reduced. Further, geometry of the pegs can allow stresses to be evenly applied to a cement mantle formed in the supportive component. Finally, the pegs can be configured to desired lengths in order to avoid placement in areas of the supportive component, for example, that have insufficient bone stock.

The invention relates to a high-precision torque detection device which comprises a working table, a guide rail base, a weight fixing mechanism and a torque output mechanism. The guide rail base is fixedly arranged on the working table. The weight fixing mechanism comprises a first fixing unit and a second fixing unit, the first fixing unit and the second fixing unit are used for fixing two end faces of a detected product, the first fixing unit is fixedly arranged on the working table and located on any side of the length direction of the guide rail base, a gap is formed between the first fixing unit and the guide rail base, the second fixing unit is arranged on the guide rail base in a sliding mode and slides back and forth in the length direction of the guide rail base, and the torque output mechanism is arranged below the first fixing unit. The first fixing unit and the second fixing unit of the high-precision torque detection device are used for fixing the two end faces of the detected product, so that fixation stability and measurement accuracy are guaranteed; the distance between the second fixing unit and the first fixing unit can be adjusted according to the length dimension of the detected product, and the high-precision torque detection device is applied to measuring products of different dimensions; the torque output mechanism is used for providing torque for the detected product, so that the torque is detected.

The invention discloses an end surface contact type upper specimen clamp capable of automatically leveling and belongs to a specimen clamp for a friction wear test machine. The end surface contact type upper specimen clamp comprises a base body, wherein the base body is fixed on a bottom plate, and the base body is further movably connected with a base body press plate; a concentric concave ring spherical surface is jointly formed by the base body and the inner side of the base body press plate, a leveling ball socket and a leveling ball are arranged on the bottom plate, the sizes of the leveling ball and the leveling ball socket are matched, and the leveling ball is arranged in the leveling ball socket. The upper specimen clamp further comprises a clamp body and a clamp press plate, wherein a concentric ring spherical surface matched with the concentric concave ring spherical surface is formed by the clamp body and the outer side of the clamp press plate together, and coaxial semi-cylindrical concave surfaces matched with specimens are arranged on both the clamp body and the inner side of the clamp press plate. The clamp body and the clamp press plate can ensure fixing stability after the specimens are clamped and can ensure that the test surfaces of the upper and lower specimens are in complete and uniform contact, so that an angle between the upper specimen and lower specimen disappears, and the accuracy of friction wear test data is effectively improved.

The invention discloses a transformer wire placement rack and a method of using the same, the technical scheme is characterized by comprising a rack, a rotating shaft, a friction disc, a friction strip, a servo motor, a sensor and a controller, wherein a square groove is arranged at one end of the rack directly facing the rotating shaft protruding from the shaft barrel; a square rod is arranged inthe square groove in a sliding manner; a hydraulic cylinder is arranged at one end of the square rod away from the square groove; a semicircular bearing matched with the rotating shaft is arranged atthe top end of a piston rod of the hydraulic cylinder; a sliding block is mounted in a through groove in a sliding mode, a push block is installed in a circular cavity in a sliding mode, and a screwis mounted in the circular cavity in a rotating mode. According to the transformer wire placement rack, the rotating shaft can be dynamically loaded and output, the situation that the output load andthe preset parameters are the same in the wire drawing process are improved, the product quality rate and the production efficiency are improved, the stability of the shaft barrel on the rotating shaft can be improved, and the shaking situation of the rotating shaft on the rack can be avoided.

The present patent discloses a novel energy-absorbing and shock-absorbing acetabular cup to improve the deficiency of the existing acetabular cup. The acetabular cup of the invention is characterizedin that under the premise of ensuring mechanical strength, a bone-like trabecular structure with a negative Poisson's ratio effect is introduced into the acetabular cup design, the pore diameter is reasonably designed, the bone growth is promoted, the friction force between the prosthesis and the bone interface is increased, and the biological fixation stability is improved. The introduction of negative Poisson's ratio structure can improve the energy absorption of acetabular cup under dynamic load in vivo, reduce the prosthesis distal bone tissue load, and effectively alleviate the phenomenonof prosthesis sinking. The acetabular cup of the invention has an acetabular outer cup and an acetabular inner cup, which can be designed as a surface porous coating structure or an integral porous structure according to clinical requirements, and the thickness of the porous coating can be set as required. The acetabular cup of the present invention can be manufactured by an augmentation manufacturing technology and can be made of a wide range of materials, such as metals and polymers with good biocompatibility. It has a good application prospect in orthopedic total hip arthroplasty.

The invention provides an optical module. The optical module comprises a circuit board, and an array waveguide grating, a reflector, and a PD array reception chip arranged on the circuit board, the array waveguide grating is connected with the reflector, the PD array reception chip is electrically connected with the circuit board, the PD array reception chip is used for receiving light transmittedby the array waveguide grating and emitted by the reflector, the array waveguide grating and the reflector are arranged opposite to the circuit board in a height direction of the circuit board, the circuit board is provided with a sunk groove arranged along the height direction of the circuit board, the array waveguide grating is arranged opposite to the sunk groove in the height direction of thecircuit board, and the array waveguide grating is fixedly arranged in the sunk groove. The circuit board is provided with the recessed sunk groove along the height direction of the circuit board so that the coupling space of the array waveguide grating and the reflector in the height direction can be increased, the distance from the bottom surface of the reflector to the PD array reception chip is shortened, the coupling performance of a receiving end is enhanced, the sunk groove can increase the space, used for fixing the array waveguide grating, of the circuit board, and the fixing stability of the array waveguide grating is improved.

The invention belongs to the technical field of medical devices for treating rib fracture, and in particular relates to a locking compression thoracic wall external fixation device. The locking compression thoracic wall external fixation device comprises an external fixation plate, and a penetrating expansion unit which is arranged on the external fixation plate, penetrates through the thoracic wall, and outwards presses the softened and collapsed thoracic wall to the external fixation plate in an expansion and outwards traction jacking manner for realizing external fixation of the thoracic wall. The invention aims at providing the locking compression thoracic wall external fixation device, after an expansion ball is inserted into the thoracic wall, the softened and collapsed thoracic wall is outwards pulled and jacked up and outwards pressed on the external fixation plate, and thus the purpose of active fixation is achieved. The locking compression thoracic wall external fixation device has the advantages that the structure is simple and effective, the thoracic wall fixation stability is good, the fracture end sets and realizes alignment, the fixation effect is good, and the surgical trauma is small.

The invention relates to a medical pedicle screw component with a telescopic double thread and capable of resisting pullout. The medical pedicle screw component with the telescopic double thread and capable of resisting the pullout is characterized in that a thread control shaft is arranged in a hollow cavity of a nail body, the thread control shaft is matched with connection rods, the connection rods are connected with telescopic screws, and the telescopic screws are arranged in a plurality of holes formed in the outer wall at the front end of the nail body. Furthermore, the cross section of the thread control shaft is of a butterfly structure, the thread control shaft comprises a middle shaft and a first support body and a second support body which are symmetrically arranged along the center line of the middle shaft, two slide pieces matched with the connection rods are fixed on the outer side of each of the first support body and the second support body, the cross section of each slide piece is in a crescent shape, the two slide pieces on each of the first support body and the second support body are oppositely arranged, and therefore rising and falling of the telescopic screws are adjusted by rotating the thread control shaft, unscrewing of threads is achieved by rotating the thread control shaft, stability of internal fixation of a spine is improved when bone rarefaction is cured or secondary screw placement is performed for revision, and occurrence rate of loosening or even detachment is reduced.

The invention relates to the technical field of piercers, in particular to a clamp for loading and unloading a piercer plug. The clamp comprises a fixing ring. A plug body extending out of the lower part of the fixing ring is sleeved with the fixing ring. Screw rods are correspondingly screwed on the left side and the right side of the fixing ring. Rotating hand wheels are integrally connected tothe outer ends of the corresponding screw rods. Arc-shaped clamping plates are rotationally connected to the ends in the screw rods through bearings. Anti-skidding rubber pads are adhered to the innerwalls of the arc-shaped clamping plates and are abutted against the outer wall of the plug body. During installation, locking bolts on the front and rear sides of the outer wall of the fixing ring are loosened firstly, and then an operator holds the rotating hand wheels by both hands to make the rotating hand wheels to rotate forward together, so that the distance between the two arc-shaped clamping plates is conveniently shortened, the plug body is fixed in an abutted manner, and the locking bolts on the front and rear sides of the outer wall of the fixing ring are tightened again; and meanwhile, the anti-skidding rubber pads are adhered to the inner walls of the corresponding arc-shaped clamping plates, and the installation and fixation stability of the plug body can be improved throughthe anti-skidding rubber pads.

A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, and an electronic circuit. The device is configured for measuring vestibulo-ocular reflex, pupillometry, saccades, visual pursuit tracking, vergence, eyelid closure, dynamic visual acuity, retinal image stability, foveal fixation stability, focused position of the eyes or visual fixation of the eyes at any given moment and nystagmus. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system is implemented as part of a faceguard.

The invention relates to a triangle support bone fracture plate for treating fracture between a femoral neck and a tuberosity and belongs to the technical field of osteopathic medical instruments. The technical problem to be solved is to provide an instrument which has good fixing stability and high fixing strength, is not easy to be damaged and broken and treats fracture between the femoral neck and the tuberosity. The method adopts a technical scheme that: the triangle support bone fracture plate consists of a bone fracture plate, a positioning screw, a supporting screw and fixing screws, wherein a plurality of fixing screw holes are distributed on the bone fracture plate; the bone fracture plate is also provided with a positioning hole; the positioning hole forms an inclination angle with the plate surface of the bone fracture plate; the aperture of the positioning hole is matched with the diameter of the positioning screw; the front end of the positioning screw is provided with a connection side hole; and the front end of the supporting screw passes through the connection side hole of the positioning screw and is connected with the positioning screw. In the triangle support bone fracture plate for treating fracture between the femoral neck and the tuberosity with the structure, the positioning screw and the supporting screw pass through the bone fracture plate and then are connected, and the bone fracture plate is fixed outside a femur to form a triangle support structure so as to provide stable support and firm fixation for fracture between the femoral neck and the tuberosity.

The invention discloses a humerus greater tuberosity locking plate. The humerus greater tuberosity locking plate comprises a plate body. The plate body comprises a fixed head portion, a fixed middle portion and a fixed tail portion which are sequentially connected. Two clamping jaws are symmetrically arranged on the fixed head portion, a protrusion is arranged on the fixed middle portion, a plurality of locking screw holes and a plurality of kirschner wire temporary fixing holes are formed in the fixed middle portion, and a far-end adjusting hole and a far-end kirschner wire temporary fixing hole are formed in the fixed tail portion. The humerus greater tuberosity locking plate is reasonable in structural design, the tension band principle is applied, the patella fixing structure and the patellar tendon principle are used for reference, the clamping jaws and the protrusion are arranged ingeniously, the positions are arranged scientifically, the locking plate can be better anchored with and attached to a greater tuberosity fragment, the requirements that rotator cuff muscle activities are affected to the minimum and the fragment is firmly fixed to the maximum are met, the fixing stability is good, the safety and the effectiveness of operations are greatly improved, operation is convenient and flexible, trauma is small, and unnecessary pain is prevented from being brought to patients. In addition, the humerus greater tuberosity locking plate is simple in overall structure, low in cost, easy to realize and convenient to apply and popularize widely.

The invention provides a wearable product which comprises a product main body and a Bluetooth earphone, the product main body comprises a main body part and a sliding limiting groove, the Bluetooth earphone is in sliding fit with the sliding limiting groove, and the Bluetooth earphone can be inserted into or pulled out of the sliding limiting groove in a sliding manner; the main body part is provided with a first magnet, the Bluetooth earphone is provided with a second magnet, and the first magnet and the second magnet are magnetically attracted; in the sliding direction of the Bluetooth earphone, one end of the first magnet is a first magnetic pole, the other end of the first magnet is a second magnetic pole, one end of the second magnet is a first magnetic pole, and the other end is a second magnetic pole; the first magnetic pole of the first magnet and the second magnetic pole of the second magnet are aligned and opposite in magnetic pole, and the second magnetic pole of the first magnet and the first magnetic pole of the second magnet are aligned and opposite in magnetic pole. The fixing stability of the Bluetooth earphone is guaranteed, the Bluetooth earphone is convenient totake and place, the hand feeling of gears is achieved, and the Bluetooth headset can be taken and placed in place smoothly.

The invention discloses a medical vertebral arch pedicle renovating screw assembly which comprises a screw sheath and a screw which are mutually matched, wherein the screw sheath has certain mechanical strength and toughness, and the medical absorbable material can effectively maintain the mechanical strength for 2 to 3 months in vivo; the screw sheath is divided into a head end and a sheath body;the head end is a cone with a sealed front end, and the sheath body is a cylinder; external threads are arranged on the outer surface of the cylinder, and a longitudinally extended triangular prism-shaped cavity is arranged in the cylinder; the cylinder is divided into three side walls by the cavity, and internal threads are designed on the inner wall of the cavity; the screw is made of medical titanium alloy and comprises a thread section and a tail part; the thread section is formed by connecting a screw tip and a screw body, and both the screw tip and the screw body are in external threaddesign; the tail part is provided with a radially communicated U-shaped groove, and internal threads are arranged on the inner wall of the U-shaped groove. The invention can improve the internal fixation stability and reliability of the spinal column in a renovating operation or the secondary screw arranging process, reduce the occurring rate of vertebral arch pedicle screw loosening and even separation and lower the failure rate of operations.

The invention relates to a sliding fixing device for a slate chamfering processing machine, and belongs to the technical field of workpiece fixation in machining. The sliding fixing device comprises a working table, a conveyor, sliding rails and sliding blocks. Each sliding block is provided with a slate fixing hydraulic cylinder, the two slate fixing hydraulic cylinders are arranged along the conveying center line of the conveyor in an axial symmetry mode, and the end of a piston of each slate fixing hydraulic cylinder is provided with a fixing mechanism. According to the sliding fixing device, production cost of equipment is reasonably controlled, production efficiency is improved, the fixing speed of slates is high, fixation stability is high, time and labor are saved, and the purposes of improving machining quality and work efficiency are achieved.

The invention discloses a wire cable fixing structure of an electric power dispatching system, comprising a base plate; a first support rod is arranged on the top surface of the base plate; an arched support frame is arranged on the first support rod; two fixing clips are arranged on the top surface of the base plate; the two fixing clips are respectively located at two sides of the first support rod; the arched support frame comprises an arched sleeve arranged on the first support rod; a rubber inner pipe is arranged in the arched sleeve; throats are arranged at two ends of the rubber inner pipe; first spring bodies are arranged in the throats; a positioning mechanism is arranged between the rubber inner pipe and the arched sleeve; the fixing clips comprise clamping plates arranged on the base plate; fixing blocks are connected to the clamping plates through second spring bodies; rubber diaphragms are arranged at two ends of the fixing blocks. The invention can solve the deficiency in the prior art and improves the wire cable fixing stability.

The invention relates to the technical field of power construction equipment and discloses a mechanical hole puncher for power construction. The mechanical hole puncher comprises a support plate I, wherein a support plate II is fixedly connected with the bottom of one side of the support plate I through a connecting plate; a bolt rod and a support bolt are in threaded connection with the bottoms of the support plate I and the support plate II respectively; support pads are fixedly connected with the bottom ends of the bolt rod and the support bolt; the middle of the bolt rod is fixedly connected in a sleeving manner with a fixing rod sleeve positioned above the support pads; the middle of the fixing rod sleeve is moveably sleeved with a compacting device. According to the mechanical hole puncher for power construction, an adjusting handle is lifted upwards, a connecting rod III is driven by a connecting II to rotate, furthermore a propping block is driven to extrude a workpiece to be processed through variations of inclination angles of the connecting rod III, one end of the workpiece to be processed can be fixed, the other end of the workpiece to be processed can be also fixed through the compacting device, then holes can be punched conveniently, the fixation stability of the workpiece to be processed can be improved, and the hole punching efficiency and quality can be improved.

The invention discloses a refrigerator comprising a lining, an evaporator and a fixing device. The lining bounds a chamber with the front side opened. The sidewall of the chamber is provided with a fitting groove. The evaporator is arranged inside the chamber. The fixing device arranged on the lining comprises a body and a fastener; a fastening channel opened towards the sidewall of the evaporator and having a rear opening is bounded in the fastener; part of the front end of the evaporator is arranged in the fastening channel; the fastener is in fastening fit with the fitting groove. The refrigerator has the advantages that simple and fast fixation of the evaporator leads to higher assembly efficiency of the refrigerator, moderate reduction in the size of the fixing device leads to convenient and easy mounting of the fixing device, easier operations for workers and lower consumption of material for the fixing device, the appearance of the refrigerator is unaffected, and rarity of the fixing device to separate ensures fixation stability and reliability for the evaporator.

The invention provides a mechanical fixing construction process of a waterproof coiled material. The mechanical fixing construction process comprises the following steps of cleaning a base layer, laying a polyethylene film vapor barrier layer, laying a thermal insulation layer, repairing a seam, laying the waterproof coiled material and performing first-time flattening treatment, performing second-time flattening treatment, fixing the waterproof coiled material, performing lap joint of the waterproof coiled material and performing joint strengthening treatment. According to the mechanical fixing construction process of the waterproof coiled material, the degree of closure between the polyethylene film vapor barrier layer and the base layer can be improved by adopting a method of vacuum pumping while using a pressure roller for flattening; moisture in concrete structural holes of the base layer can be removed by using a strong air drying method to blow and dry the surface of the base layer, and the drying property of the base layer is improved, so that the vapor barrier effect between the polyethylene film vapor barrier layer and the base layer is improved, the waterproof effect isbetter, the waterproofness of the waterproof coiled material after being fixed is maximized without increasing the larger cost, and the fixing stability of the waterproof coiled material on a construction site is high.

The invention discloses a kidney transplantation specimen storage device. The storage device comprises a shell, wherein an inner box is arranged in the shell, an air delivery pipe is arranged in the inner box, an air delivery pipe base is fixedly connected to the lower end of the air delivery pipe, blades capable of being overturned and opened are arranged in the air delivery pipe base, a liftingframe is fixedly connected to the outer side of the air delivery pipe base, lifting racks are fixedly connected to the front side and the rear side of the two ends of the lifting frame, lifting mechanisms capable of controlling the lifting frame to ascend and descend are meshed on the outer side of the lifting racks, a specimen placement barrel is arranged at the lower end of the air delivery pipebase, a placement table capable of moving back and forth is arranged at the lower end of the specimen placement barrel, and a sealing door is hinged to the left side of the front end of the shell. According to the storage device, a test tube for storing a specimen can be placed in a specimen placement box, the specimen placement box can be taken out from the specimen placement barrel by pressingthe specimen placement box, operation is convenient and efficient, circulation of cold air can be controlled by controlling blades, operation and using of a user are facilitated, the fixation stability of the specimen placement barrel is enhanced by the arrangement of the sealing door, and the safety of the specimen is ensured.

The invention provides a foldable building construction scaffold. The foldable building construction scaffold comprises a main support frame, a main bolt and nut, a main connecting frame, an auxiliarysupport frame, an auxiliary bolt and nut, an auxiliary connecting frame, a bottom supporting seat, fastening bolts and nuts, a linear sliding rail, a fixed pipe, a connecting pipe, a foldable quick-overlapping rod structure, a locking bolt, a construction safety protection matching belt structure and adjustable movable tightening rod structures. Through the arrangement of a locking screw, a fastening nut, a rotating pipe, a rotating screw, a movable bolt and nut, a stopping block and a locking nut, quick installation and disassembly are convenient, and rotating and folding work can be performed for better storage; and through the arrangement of T-shaped mounting seats, supporting bases, inverted U-shaped sliding blocks, wing bolts, long nuts, main adjustment screws and auxiliary adjustment screws, improvement of the lap joint fixing effect is facilitated to ensure the fixing stability of the scaffold, the safety protection effect is improved, skew or dumping situations are avoided, and the safety of use is ensured.