3148results about How to "Prevent prolapse" patented technology

Implantable devices and methods for the repair of a defective cardiac valve are provided. The implantable devices include an annuloplasty ring and a restraining or support structure or mechanism. The annuloplasty ring functions to reestablish the normal size and shape of the annulus bringing the leaflet in proximity to each other. The restraining structure functions to restrain the abnormal motion of at least a portion of the valve being repaired. The restraining structure may include at least one restraining member across the interior of the circumference of the ring in a configuration consisting of a primary member to which secondary members are attached or one where all members traverse the ring. Kits for using the devices and practicing the methods of the invention are also provided.

Devices and methods for treatment of prolapsed hemorrhoidal arteries is disclosed. The devices can identify the hemorrhoid and ligate the artery without causing significant pain or distension of the rectum. The artery can be identified with ultrasound. The ligation can be performed using energy and / or mechanical structures, such as clips or rubber bands.

Novel apparatus and minimally invasive methods to treat atrioventricular valve regurgitation that is a result of tethering of chordae attaching atrioventricular valve leaflets to muscles of the heart, such as papillary muscles and muscles in the heart wall, thereby restricting the closure of the leaflets. Catheter embodiments for delivering and positioning chordal severing and elongating instruments are described.

The effects of acute left ventricular heart failure are mitigated by temporary support of the cardiac function through use of either one or both of an expendable temporary one-way valve positioned in the aorta, having a collapsible frame that is expanded upon deployment, and / or a temporary dilation device positioned in the descending aorta for expanding upon deployment to increase the diameter of the associated portion of the aorta. When used together, the dilation device is positioned distal to the temporary one-way valve.

The invention relates to a fast tube joint of a compressed air pipe, which comprises a joint pipe and a gland bush; the joint pipe and the gland bush are connected detachably by screw threads, and the end part of the joint pipe is provided with a snap ring base; the inner end of the snap ring base is inserted into the interior of the joint pipe and provided with a sealing ring, and pushes against the snap ring base; the inner ring of the sealing ring protrudes through the inside diameter of the snap ring base; the outer end face of the snap ring base is provided with an elastic snap ring which is made of metal and comprises a ring body and claw teeth, and the claw teeth are flanged to the direction of the snap ring base and arranged on an inclined ring which is arranged on the opening of the snap ring base; the outer end of the elastic snap ring is provided with a push part, and two ends of the push parts respectively pushes against the elastic snap ring and a convex platform. When the fast tube jonit is used, the gland bush is screwed tightly, the convex platform on the gland bush oppresses the push part, and the push part oppresses the elastic snap ring to lead the claw teeth to be propped; therefore, the claw teeth can grip the pipe to prevent the pipe from escaping. The fast tube joint is characterized by simple structure, convenient implementation and firm connection.

The invention relates to a mechanical product assembly stand which comprises a stand body, wherein an adjusting platform is arranged at one end of the upper part of the stand body; a roll clamping device is arranged on the adjusting platform; a self-enclasping device is arranged at the other end of the stand body; the self enclasping device comprises an installing shell; a first cambered enclasping claw and a second cambered enclasping claw which are used for enclasping a workpiece are oppositely articulated at two sides of the installing shell; a supporting rod for supporting the workpiece is arranged vertically in a sliding way between the two cambered enclasping claws on the installing shell; the first cambered enclasping claw and the second cambered enclasping claw are respectively connected with the supporting rod through articulated connecting rods in a transmission way; and the supporting rod and the cambered enclasping claws form a plane connecting rod structure which converts the vertical movement of the supporting rod into the opposite opening and closing swinging movement of the cambered enclasping claws through the articulated connecting rods. In the invention, because the first cambered enclasping claw and the second cambered enclasping claw are respectively connected with the supporting rod through the articulated connecting rods in a transmission way, after the workpiece is put on the supporting rod, the supporting rod moves downwards under the action of gravity and acts on the two cambered enclasping claws through the connecting rods, and the two cambered enclasping claws enclasp the workpiece.

A method of treating a vascular condition includes inserting at least one locally stiffened guidewire into a vessel, advancing a distal section of the guidewire to a position adjacent a treatment site and providing a stiffening portion of the distal section to a location adjacent the treatment site. The method further includes disposing a delivery catheter over the inserted guidewire, advancing a distal portion of the delivery catheter to the treatment site, the distal portion carrying at least one stent and deploying the stent at the treatment site.

The invention relates to a fluorine-containing ion exchange membrane with reinforced sacrificial fiber mesh cloth, which comprises a fluorine-containing ion exchange resin base membrane, mesh cloth with sacrificial fiber and a hydrophilic coating, wherein the fluorine-containing ion exchange resin base membrane comprises a perfluorocarboxylic acid resin membrane layer of 5-10 micrometers, a perfluorosulfonic acid resin membrane layer of 90-120 micrometers, and a perfluorosulfonic acid / perfluorocarboxylic acid copolymerization or blending resin membrane layer of 0-40 micrometers, which is positioned between the perfluorocarboxylic acid membrane layer and the perfluorosulfonic acid membrane layer; and the mesh cloth with the sacrificial fiber comprises reinforced fiber and sacrificial fiber. In the invention, the fluorine-containing ion exchange membrane with the reinforced sacrificial fiber mesh cloth can improve the electrochemical properties of the membrane and can effectively reduce the resistance of the membrane.

The invention relates to the repair of spinal annular defects. An appartatus comprises a scaffold comprised of a biodurable, resiliently compressible, elastomeric reticulated composition to obliterate spinal / vertabral connective tissue defects, to obliterate spinal-annular nuclear tissue defects, and for spinal annulo-nucleoplasty regeneration. The apparatus comprises an at least partially cylindrical member.

The invention discloses a safety venous indwelling needle with a needleless interface positive-pressure closing valve, comprising a puncture needle, a puncture needle seat and a handle, wherein, the puncture needle is formed into a puncture needle protection assembly by a puncture protection sleeve, a spring, a plunger latch and an escapement clamp; a venous indwelling needle is formed by an indwelling needle soft tube, a puncture needle guide tube, an indwelling needle seat and a sealing plug; a needless interface positive-pressure closing valve is formed by a shell, a piston, a seal ring, a spring, a connecting soft tube and a base; the positive-pressure closing valve and a liquid out plug separated structure do not involve the indwelling needle, are easy to operate, can reduce pain, and avoid the indwelling needle from taking off; the puncture needle protection sleeve can protect the puncture needle before and after the use of the indwelling needle, has the advantages of without added length, small and exquisite volume, good hand feel, accurate control, high puncture precision, and convenience for puncture operation and the like, can automatically retract to protect the puncture needle, can avoid acupuncture injury on medical workers, has positive pressure closing function, can prevent venous blood flowing back and overflowing, prevent blood from being polluted and avoid the blood from forming blocking in the indwelling needle, does not need heparin tube closing and other operation, has needless connection function, and can avoid needle injury, improve working efficiency and protect the safety of medical workers and patients.

The invention relates to an automatic bamboo breaking machine. The automatic bamboo breaking machine comprises a feeding device, a clamping and positioning device, a bamboo breaking pushing disk device, a tool rotating disk device, an output device and a control system. The feeding device and the clamping and positioning device are located on the two sides of one end of the bamboo breaking pushing disk device. The tool rotating disk device is located on the front part of the end, close to the feeding device and the clamping and positioning device, of the bamboo breaking pushing disk device, and the output device is located on the tail part of the tool rotating disk device. The control system controls the feeding device, the clamping and positioning device, the bamboo breaking pushing disk device, the tool rotating disk device and the output device to run in a cooperative manner. The automatic bamboo breaking machine has the beneficial effects that the bamboo breaking machine can accurately control cooperative running of the devices, a bamboo tube is conveyed and positioned reliably, the bamboo tube can be accurately cut into bamboo canes, the finally cut bamboo canes can be conveyed out, the automation degree is relatively high, and the production efficiency is improved.

The invention relates to a mobile robot, in particular to a double-arm four-wheel polling robot mechanism comprising a box body, a front arm mechanism and a rear arm mechanism, wherein the front arm mechanism and the rear arm mechanism are of the same structure and are respectively installed on the box body; each arm mechanism comprises travelling mechanisms, turnover mechanisms, an elevating gear, a clamping mechanism and a supporting arm, wherein one end of the supporting arm is connected with the box body, and the other end of the supporting arm is hinged with the elevating gear the two ends of which are respectively provided with the front turnover mechanism and the rear turnover mechanism; the front travelling mechanism and the rear travelling mechanism which can be turned over to the vertical state from the horizontal state are respectively connected to the output end of the front turnover mechanism and the output end of the rear turnover mechanism; the front travelling mechanism, the rear travelling mechanism, the front turnover mechanism and the rear turnover mechanism are linked with the elevating gear; and the clamping mechanism which is installed on the supporting arm and can clamp earth wires by moving up and down is arranged just below the front travelling mechanism and the rear travelling mechanism. The robot mechanism provided by the invention has the advantages of good safety protection performance, strong crawling and obstacle-detouring capability, large working space, wide application range and the like.

Described embodiments are directed toward prosthetic valves having a support structure and at least one leaflets. The leaflet comprises means for allowing fluid that is behind the leaflet to pass through to the front of the leaflet when the leaflet is not in the closed position. The prosthetic valve includes a leaflet moveable between an open position that permits antegrade flow through the prosthetic valve and a closed position that prevents regurgitant flow through the prosthetic valve, the leaflet having an aperture or gap, or a separation of portions of the leaflet to allow a flow or exchange of fluid between a front and back of the leaflet, when the leaflet is not in the closed position.

The invention belongs to the technical field of poultry feed and especially relates to a Chinese herbal medicine feed additive for laying hen and a preparation method thereof. The preparation method of the Chinese herbal medicine feed additive for laying hen comprises the following steps of respectively carrying out reflux extraction of motherwort, prepared rehmannia root, cape jasmine fruit, malaytea scurfpea fruit and dried orange peel orderly by 60 to 90% of ethanol and drinking water, merging extract, mixing the merged extract and water extract solutions of radix astragali, barbary wolfberry fruit, root of pilose asiabell, Chinese angelica, cape jasmine fruit, rhizoma atractylodis macrocephalae, cortex eucommiae, haw, isatis root, raspberry, ligusticum chuanxiong hort and white peony root, concentrating the mixed solution, drying , carrying out processing to obtain dry powder, uniformly mixing the dry powder, crushed pine needle powder and crushed hot pepper powder, and carrying out packaging. The preparation method provided by the invention adopts the scientific and reasonable raw materials and has strong operationality in preparation. The Chinese herbal medicine feed additive for laying hen allows a trace dose, has high efficiency and good palatability, is safe and nontoxic, and improves laying performances of laying hen, egg quality and nutritive values, and economic benefits of a laying hen culture.

The method of delivering an implant in an intracranial vessel includes deploying an anchor of a tethering device in an anchoring vessel forming a first fixation point and advancing a guide-sheath to a location near the anchoring vessel. The tethering device has a tether extending proximally from the anchor and the guide-sheath has at least one lumen. The method includes attaching the guide-sheath to the tether of the tethering device forming a second fixation point proximal to the first fixation point, delivering an implant through the lumen of the guide-sheath towards a treatment site distal to the first fixation point and located within an intracranial vessel, and deploying the implant at the treatment site. Related devices, systems, and methods are also provided.

The invention discloses a mitral chordae sewing machine for implanting the artificial chordae through the minimally invasive technology and a method of the mitral chordae sewing machine in the field of medical apparatus and instruments. The mitral chordae sewing machine comprises a mitral forceps holder, sewing needles and a position detection device, wherein the mitral forceps holder is capable of clamping a mitral leaflet; the mitral forceps holder comprises an operating handle, a support rod and a clamping device of which the front end is opened and closed under the control of the operating handle; the number of the sewing needles is two; each sewing needle is designed to be of a barb structure, and the barb structures are used for hooking the artificial chordae; the position detection device is used for detecting the position, clamped by the mitral forceps holder, of the mitral leaflet; the mitral leaflet can be implanted into a human body through the small incision of left chest, and enters the ventriculus sinister from the apex cordis position to clamp the mitral leaflet; the sewing needles penetrate through the mitral leaflet to hook the artificial chordae, so that a liner is adhered to the mitral leaflet at one side of the atrium sinistrum, and two ends of the artificial chordae are fixed to the apex cordis position. According to the mitral chordae sewing machine and the method of the mitral chordae sewing machine disclosed by the invention, the goal that the artificial chordae is implanted through the minimally invasive technology is achieved, and patients with mitral regurgitation caused by the rupture of the mitral chordae are effectively treated.

The invention discloses a bake frying machine which comprises an upper shell assembly, an upper baking tray assembly, a lower baking tray assembly and a lower shell assembly. The upper baking tray assembly is arranged in the upper shell assembly, the lower baking tray assembly is arranged in the lower shell assembly, one end of the upper shell assembly is hinged to one end of the lower shell assembly, and the other end of the upper shell assembly and the other end of the lower shell assembly are fastened to form an internal closed cavity; a lifting device which can drive the baking tray assemblies to move is further arranged in the cavity. The bake frying machine has the advantages that the bake frying machine is additionally provided with the lifting device, so that the upper baking tray assembly or the lower baking tray assembly can be suspended in a shell, the upper shell assembly and the lower shell assembly which are fastened together cannot be opened as long as the thickness of food is within a suspension displacement variation range of two baking surfaces, and accordingly loss of heat and loss of moisture of the food are greatly reduced.

The invention discloses a device and a method for lifting a wire during distribution line construction and belongs to the technical field of distribution line erection construction. The device comprises a stand column, a support rod and a wire tightening mechanism, wherein the support rod is fixedly connected with a first casing pipe; an inclined strut is arranged between the stand column and the support rod, one end of the inclined strut is fixedly connected with the support rod, and the other end is fixedly connected with a second casing pipe; a guide pulley is mounted at the free end of the support rod; a U-shaped hanging ring is fixedly connected in the middle of the stand column; a U-shaped hook is fixedly connected at the bottom end of the stand column; one end of a connecting frame of the wire tightening mechanism is fixedly connected with a hook matched with the U-shaped hanging ring; a steel wire rope of the wire tightening mechanism winds around a roller, and the free end of the steel wire rope penetrates through the guide pulley to be connected with a shackle. The device is simple in overall structure and convenient to mount, the wire is lifted in place quickly, operating conditions of workers are improved, the labor intensity of the on-pole workers is reduced, and potential safety hazards during construction are reduced.

It is intended to allow for readily performing a cover tape setting operation. In the present invention, a tape guide 110 for guiding a component supply tape 35 includes a front guide section 120 provided with an open surface 128 opened on one side thereof in a continuous manner in a tape feed direction, so as to allow a cover tape 37 to be taken in and out relative to the front guide section 120 through the open surface 128. This configuration makes it possible to perform the setting operation for the cover tape 37 through given operational steps, under a condition that the tape guide 110 remains fixed to a component supply unit 40.

The invention provides a wiring post which comprises a wire holder and a wire pressing screw. A wiring hole is opened on one side face of the wire holder, a threaded hole is opened at the top of the wire holder, the threaded hole is communicated with the wiring hole, and the wire pressing screw is connected with the wire holder through the screw hole. The wiring post further comprises a cap sleeve with inner threads, outer threads are opened at the upper end of the wiring post, and the cap sleeve is in threaded connection with the wiring post. A cap is arranged at the top of the cap sleeve, a hole for a screw driver to penetrate through is opened on the cap, and the diameter of the hole is smaller than that of a screw cap of the wire pressing screw. By means of the wiring post with the structure, the wire pressing screw only reciprocates in the cap sleeve and cannot fall off the wire holder, and the wire pressing screw cannot be lost easily, so that the short-circuit phenomenon caused by the loss of the wire pressing screw in products can be avoided.

The invention discloses an injection mould with rapidly-replaced mould cores. The injection mould is composed of a movable mould and a stationary mould, wherein a main body of the movable mould is composed of a movable mould base and a movable mould core movably arranged on the movable mould base; a main body of the stationary mould is composed of a stationary mould base and a stationary mould core movably arranged on the stationary mould base; the butt joint faces of the movable mould base and the stationary mould base are respectively provided with a mould core mounting sliding chute which horizontally extends from front to back; at least the front ends of the mould core mounting sliding chutes are provided with plug-in mounting holes for mounting or dismounting the mould cores; the mould cores are provided with tracks matched with the mould core mounting sliding chutes so as to move along the mould core mounting sliding chutes; and the mould cores are inserted to or dismounted from the mould core mounting sliding chutes on the mould bases through the plug-in mounting holes, thus the mould cores are replaced. According to the invention, only one set of mould base needs to be manufactured to be matched with the mould cores of different cavities which are manufactured according to spline standards tested based on different performance indexes; the mould replacing operation is easier and more convenient than that of the prior art, so that the mould replacing time is greatly shortened; and the manufacturing cost of various test spline moulds can also be greatly reduced.

The invention relates to an expansion bar, at least comprising a first slide bar and a second slide bar which are in sliding joint with each other, wherein the second slide bar is positioned on the upper part and is sleeved in the first slide bar. The expansion bar also comprises a nozzle, a clamping claw and a first locknut, wherein the lower part of the nozzle is fixed at the upper end of the first slide bar in a surrounding manner and the upper part thereof is provided with an external thread; the lower part of the clamping claw is arranged in the nozzle, and the upper part of the clamping claw, which is exposed out of the nozzle, is provided with a truncated cone-like peripheral surface and surrounds the second slide bar; and the first locknut is sleeved outside the clamping claw, the lower part of the first locknut is provided with an internal thread meshed with the external thread and the first locknut is provided with a truncated cone-like internal surface which extrudes the truncated cone-like peripheral surface and ensures the clamping claw to clasp the second slide bar. The expansion bar can maintain tight connection even on the oscillatory occasions to prevent rotation. Meanwhile, when accidentally falling down, the second slide bar can be cushioned, thus avoiding impact on the bottom. The lockpin component arranged on the expansion link can avoid detachment among the slide bars.

The invention provides an automatic door lock, comprising a lock shell having a dead bolt hole molded with dead lock hole; a lock assembly installed on the lock shell panel and the lock shell bottom panel corresponding to a molded lock installation hole; a bolt mechanism installed in the lock shell capable of moving along the direction perpendicular to the lock shell panel; a locking control mechanism for controlling the bolt in the bolt mechanism extruding from and retracting into the panel; and a bolt locking mechanism matched with the door handle operating mechanism. The automatic door lock implements engagement and disengagement of the stop member with a fixed stripe and a movable stripe by coupling of the fixed and the movable stripe, the stop member is capable of engaging with the fixed and the movable stripe at different positions, incomplete unlocking operation due to extrusion of a bolt partially retracted into the shell is prevented.

The invention discloses an unmanned aerial vehicle emergency safety landing device for bridge detection, and relates to the technical field of unmanned aerial vehicles. The unmanned aerial vehicle emergency safety landing device for the bridge detection comprises an airframe body. A controller and a pressure sensor are arranged on the airframe. A power supply is arranged in the airframe. A connecting rod is arranged at the bottom of the airframe. A supporting seat is arranged in a first shell body. A motor is arranged on the supporting seat. A gear is arranged on an output end of the motor. Arack is arranged on one side of the gear. A first through hole is formed in the bottom end of the first shell body. A second through hole is formed in the top wall of a second shell body. A pressing plate is arranged at the bottom end of the rack. A connecting ring is arranged on the pressing plate. A groove is formed in the outer wall of the second shell body. A supporting bar is arranged in thegroove. A circular hole is formed in an adjusting rod. A notch is formed in the bottom of the second shell body. A supporting plate is arranged at the bottom end of the adjusting rod. A buffer part isarranged at the bottom of the supporting plate. The unmanned aerial vehicle emergency safety landing device for the bridge detection has the beneficial effect that the unmanned aerial vehicle emergency safety landing device can safely descend to a water surface, and the unmanned aerial vehicle can be effectively protected when the unmanned aerial vehicle detects the failure of a bridge.