34results about How to "Prevent retreat" patented technology

A clipping device comprises: a clip loaded into a forward end portion of a sheath; a manipulating wire connected to a rear end of the clip; and a retention ring fitted onto the clip and fitted into the sheath so as to be capable of advancing and retreating. The retention ring includes: a resin retaining portion which has two or more skirt portions which, when being situated inside the sheath, are closed inwardly by being pressed by an inner wall of the sheath and which, when being situated outside of a forward end of the sheath, are opened in a width larger than an inner diameter of the sheath to prevent retreat into the sheath, and a metal clamping portion arranged on a forward end side of the retaining portion and, when being situated on a forward end side of the clip, abutting the clip to clamp it.

A tissue anchor system includes a plurality of elongated members pivotally coupled by a pivot member and at least one coupler coupled to at least one of the elongated members between a pivot point and an end of the elongated member which coupler is operable to secure the elongated members in a configuration that securely couples the tissue anchor to tissue.

A glove with enhanced gripping capabilities that makes maintaining a grip for a user, less taxing and less fatiguing for the user's hand and forearm muscles. More particularly, a grip-enhancing glove, and method for maintaining a grip, which enables a user to maintain a prolonged grip without incurring undesirable effects.

In some embodiments, the present disclosure relates to a system that includes an insertion tool and a drill guide. The insertion tool includes a body with a distal portion and a distal end. The body has a first engagement feature extending longitudinally along the distal portion and two arms extending longitudinally from the distal end of the body. The drill guide includes two bores and an open faced channel therebetween. The open faced channel includes a second engagement feature slidably engageable with the first engagement feature on the body of the insertion tool. The two bores are adapted for the disposal of a fastener driver tool therethrough.

A self-locking inflation valve works by having an extension inflation tube adapted to an aerator to execute locking in fashion of rotation and insertion to enable the inflation valve of the object to be inflated self-locking and secured type of opening for the object to achieve dual efficacies of inflation or air suction/drain; a mortise being provided in relation to the extension inflation tube on the inner edge of the end of an inflation valve assembly to enable self-locking when the tube being coupled into the mortise to force the inner valve to retreat thus to open up the inflation valve gate; and the inflation valve gate being automatically shut off through a built-in coil once the extension tube clears away from the mortise.

This invention relates to a cord clamp with push button quick release which is adapted to bind one or more flexible cords or strings at a desired location therealong by freely pulling said cord to the desired point of binding upon which the cord is clamped against retreating until such time as the button is depressed upon which the cord is freely released. Although this invention may be employed for various applications it is especially well suited for fastening/tightening footwear laces and draw strings of clothing and bags. Where the clamping device is fixed in position on the footwear, clothing, bag or other item the user may single-handedly adjust the cord in the clamp simply by pulling the cord to fasten the cord at the required length or tighten it to the required tension and single-handedly release said cord by depressing said button.

The present invention relates to the step of plasticizing a thermoplastic resin material by rotatably driving a screw (20). Also included in the method is the step of injecting an inert gas into a screw cylinder (1) to permeate the melted resin and injecting the melted resin into a mold by driving the screw (20) in the direction of injection. Here, the inert gas has a pressure, at least in pressure, equal to or greater than a supercritical pressure or is under a supercritical state. To provide a thermoplastic resin foam by the method, electric servomotors (31, 32) are employed to drive the screw (20). After the step of plasticizing the resin material has been completed, brakes are applied to the electric servomotors (31, 32) to prevent the screw (20) from retreating. Alternatively, even after the step of plasticizing the resin material has been completed, the screw (20) is driven at low speeds in the direction of plasticization until immediately before the step of injecting the melted resin is initiated. This allows foaming inside the screw cylinder (1).

The invention discloses an in situ fenestration instrument. The instrument comprises a puncture device, a bending-adjustable catheter and an anchoring catheter which are coaxially sleeved in sequence;the puncture device comprises a puncture push rod, a puncture needle head and a puncture handle; the bending-adjustable catheter comprises an bending-adjustment catheter body, a traction assembly anda bending-adjustment mechanism, the far end of the traction assembly is connected to the far end of the bending-adjustment catheter body, and the near end of the traction assembly is connected to thebending-adjustment mechanism; the anchoring catheter comprises a hollow anchoring catheter body and an anchoring piece arranged at the far end of the anchoring catheter body; the anchoring piece is made of an elastic material and has a contracted state and an expanded state; and the anchoring piece is axially provided with a through hole corresponding to the far end of the anchoring catheter body, and the anchoring piece is provided with at least one aperture which axially passes through the anchoring piece. According to the invention, the bending-adjustable catheter and the anchoring catheter can perform accurate positioning, ensure the puncture accuracy, and be used for retrograde in situ fenestration and antegrade in situ fenestration without influencing blood supply during fenestration.

The invention discloses an endovascular anchoring catheter. The endovascular anchoring catheter includes a hollow catheter body and an anchoring member arranged on a distal end of the catheter body. The anchoring member expands radially outward from the catheter body in a natural state. The anchoring member is provided with a through hole which is coaxial with an opening at the distal end of the catheter body. The anchoring member is provided with at least one aperture axially passing through the anchoring member. The cavity of the endovascular anchoring catheter provides an access for other instruments. An anchoring device at the distal end of the catheter can limit radial deviation of the catheter and the instruments in the catheter and does not affect normal circulation of blood of a vessel in which the endovascular anchoring catheter is placed.

An drawstring clamping device having a first member and a second member. The first member has a first member base, a first tower structure secured to the first member base at a first tower structure first end, and a second tower structure secured to the first member base at a second tower structure first end. The second member has a second member base with an aperture disposed therethrough. The aperture is configured to adjustably engage the first tower structure and the second tower structure.

The present invention belongs to a pressurized water reactor nuclear power plant subsystem, and specifically relates to an auxiliary water supply tank stored water circulation cooling system, which comprises a circulation pump connected with an auxiliary water supply tank, wherein the other end of the circulation pump is connected with one end of a heat exchanger, the other end of the heat exchanger is connected with the auxiliary water supply tank, and the heat exchanger is connected with an external source. The auxiliary water supply tank stored water circulation cooling system has the following advantages that: the stored water in the auxiliary water supply tank can be cooled after the high water temperature alarm is generated during the water supply operation of the auxiliary water supply tank or during the circulation oxygen removing process, such that the condition that the water temperature is further increased to achieve the high temperature limitation value so as to cause unit recession can be prevented so as to increase safety and economy of the nuclear power plant.

A fastening system is configured to secure a first panel to a second panel while isolating the first panel from the second panel. The fastening system may include a first retainer, a sleeve, and a fastener. The first retainer may include a planar sheet and a central opening. The sleeve includes a plurality of inwardly-canted tabs, wherein a central channel is formed through the sleeve. The sleeve is secured within the central opening of the planar sheet. The fastener is positioned within the central channel of the sleeve and the inwardly-canted tabs securely engage the fastener to prevent the fastener from retreating within the sleeve. The fastening system may also include a second retainer, wherein a portion of the sleeve snapably secures to a portion of the second retainer.

An electrical connector includes a shell, a conducting base accommodated in the shell in a sliding manner, and a rotatable body having a pivot for pivoting the conducting base. At least one side of the conducting base has a first elastic member. The rotatable body has a bump located below the center of the pivot. The first elastic member is a linear spring and butts the bump. When the conducting base retreats from the shell, the first elastic member butts the bump, the rotatable body rotates and an insertion space is formed between the rotatable body and the conducting base for a mating plug to be inserted therein.

The invention discloses an anti-bend medicine-coated balloon catheter which comprises a push catheter, a medicine-coated balloon, a protective jacket and a slide mechanism. The medicine-coated balloonis fixed to a distal end of the push catheter, the slide mechanism is connected to the protective jacket and comprises a support component and a slide component, the support component sleeves the push catheter, and the slide component is arranged between the protective jacket and the support component in a connected manner, and can axially slide along the push catheter by the aid of the support component, so that the medicine-coated balloon can be accommodated in the protective jacket or can be exposed out of the protective jacket. The anti-bend medicine-coated balloon catheter has the advantages that the medicine loss ratio of the anti-bend medicine-coated balloon catheter can be reduced in transportation procedures, and the push catheter can be prevented from being bent.

The invention relates to the technical field of nuclear power station rod control systems, in particular to a nuclear power station RGL system control rod group control method. The method comprises the steps that in the RGL test process, if monitoring that a control rod set is located at a non-required rod position due to the fact that a logic cabinet breaks down, a control panel rapid lifting and inserting device is installed in an RGL system to be in communication connection with a power supply cabinet, and the power supply cabinet is controlled by the control panel rapid lifting and inserting device to release the moving locking state of the control rod set; a control instruction is sent to a power supply cabinet through a control panel rapid lifting and inserting device, so that the power supply cabinet controls a control rod group corresponding to a faulty rack to move to a required rod position to eliminate a first group I0 of a generator set, thereby avoiding a retreating limiting behavior of the generator set, avoiding economic loss, and reducing unit loss and manpower consumption. Meanwhile, nuclear power station operators have sufficient time to eradicate faults of the RGL system, and human errors caused by time pressure are reduced.

The invention discloses a chrysanthemum planting lodging preventing device, and relates to a device for flower planting. The problem that in the prior art, plants grow high and are prone to lodging issolved. The device comprises a lifting support, a cutting rod and a grid; the device is characterized in that the grid is shaped like a rectangle, each chrysanthemum plant correspondingly penetratesthrough a check of the grid, the size of the grid corresponds to the size of a chrysanthemum cultivation ridge, a lifting mechanism on a lifting support is connected with the wide end of the grid, thelong side line of the grid is connected with the cutting rod, by relying on lateral support of the cutting rod, the grid is pulled up, and grooves with different heights are formed in the side face of the cutting rod body and used for hanging the grid side lines to support and keep the grid height.

The invention discloses an oblique launching method for a large-section rectangular jacking pipe. The oblique launching method includes the steps that S1, an enclosure structure is constructed on the periphery of a jacking pipe working well; S2, the pipe jacking working well is excavated, and an inclined steel ring is pre-buried at the position of a tunnel portal in the jacking direction; S3, the enclosure structure at the position of a jacking pipe starting portal is chiseled off; S4, according to the jacking direction, guide rail base concrete is constructed in the pipe jacking working well, and a guide rail is installed on the guide rail base concrete; S5, a wedge-shaped extension steel ring is installed, a rib plate is installed at the exposed end of the wedge-shaped extension steel ring, and a cavity formed by the enclosure structure, the inclined steel ring, the wedge-shaped extension steel ring and the rib plate is filled a low-strength machinable filler; S6, a wedge-shaped rear backrest, a jack support, a propelling jack and a rectangular pipe jacking machine are hoisted; S7, linkage jacking iron is placed in the pipe jacking working well and connected with the propelling jack, and retaining devices are installed on the two sides of the jack support on the inclined face side of the wedge-shaped rear backrest; and S8, the rectangular pipe jacking machine is pushed to move forwards for construction through the propelling jack, and the oblique launching of the rectangular jacking pipe is completed.