169 results about "Irrigation channel" patented technology

The present invention pertains to multiple piece irrigated ablation electrode assemblies wherein the irrigation channels are insulated or separated from at least one temperature sensing mechanism within the distal portion of the electrode assembly. The present invention further pertains to methods for improved assembly and accurate measurement and control of the electrode temperatures while effectively irrigating the device and target areas.

The present invention pertains to multiple piece irrigated ablation electrode assemblies wherein the irrigation channels are insulated or separated from at least one temperature sensing mechanism within the distal portion of the electrode assembly. The present invention further pertains to methods for improved assembly and accurate measurement and control of the electrode temperatures while effectively irrigating the device and target areas.

A deflectable tip videoarthroscope of 5.4 mm diameter or smaller, comprising a miniaturized chip-in-tip CCD with four-way angulations mounted on the distal end of the arthroscope. The deflectable tip videoarthroscope may be provided with a replaceable distal window made of a thin material (such as polycarbonate or acrylic) or a glass (sapphire or other) with very high light transmission properties, connected to a sheathing system that is disposable or limited-reusable, which could be discarded if a shaver burr or ablation probe contacts the lens. This design protects the distal window of the videoarthroscope during use and reduces scope repair costs and system down-time. The deflectable tip videoarthroscope may additionally include a steering wheel, which allows 360 degree rotation of the instrument during arthroscopic procedures. The videoarthroscope may further include an irrigation channel or a wireless imager control system.

A dual lumen catheter provides for percutaneous drainage of a subdural hematoma to irrigate and drain the subdural space. The dual lumen catheter comprises a drainage channel dimensioned to drain subdural fluid collection from the subdural space and an irrigation channel dimensioned to irrigate the subdural space. Several methods are disclosed for inserting the dual lumen catheter into the subdural space through a small burr hole drilled in the skull. The dual lumen catheter 310 then both irrigates and drains the subdural space in order to both effectively evacuate a subdural hematoma as well as cleanse the subdural space. The subdural space is thereby effectively collapsed, and the brain returns to be adjacent to the dura mater and skull.

An in vivo pathology diagnosis system includes a penetrating device that is at least one of an endoscope sheath and an endoscope, the penetrating device having irrigation and working channels with openings at a distal end chamber of the device. The device is structured for penetrating tissue until the distal end is proximate a target tissue area. A method includes supplying stain to the chamber via the irrigation channels, thereby staining the target tissue area. Pathology of the stained target tissue is performed by viewing such stained tissue through the penetrating device. The viewing may be performed through a selected lens segment of a tissue contact type endoscope or endoscope sheath. A suction channel may be provided for removing material from the chamber, and cauterizing electrodes may be provided as part of the device. Control of in vivo staining may be performed by a computer program.

Systems and methods of removing bacterial biofilm from a target site using a biofilm removal endoscope. The endoscope has an insertion portion including an imaging channel terminating at a viewing window and an irrigation channel terminating at a nozzle. The imaging and irrigation channels are permanently affixed relative to one another. The insertion portion is inserted into the patient, with a working end thereof being disposed proximate the target site. The target site is imaged and a flow of fluid is dispensed via the nozzle to mechanically remove bacterial biofilm from the target site.

A medical instrument for suction and irrigation comprises an elongate shaft with a first channel serving as suction channel and with a second channel serving as irrigation channel, the shaft having a first tube which is closed in cross section and in which one of the channels is present. The shaft has a second tube which is open in cross section along its length and is placed with its open lengthwise side on an outside face of the first tube and secured sealingly thereon, the other channel being formed in the space between the outside face of the first tube and an inside face of the second tube. A method for production of the instrument is also described.

The invention relates to a large-scale water-saving irrigation network with solar photovoltaic driving and GPRS wireless communication monitoring, which comprises a pre-stage water taking system and a basic irrigation unit. The pre-stage water taking system utilizes the electricity generated by a solar cell to pump water from a water source through a main water pump controlled by a wireless online pre-stage measuring and controlling module, and the water is distributed to local water reservoirs through pipelines by a main dividing valve; and the basic irrigation unit also utilizes the electricity generated by the solar cell, drives unit water pumps to pump water from the local water reservoirs through wireless online unit measuring and controlling modules and carries out drip irrigation or sprinkler irrigation through a dividing valve and local pipelines. A computer administration center carries out real-time monitoring on soil moisture, water levels in the water reservoirs and irrigation amount of an irrigation unit block through a wireless network to realize all-weather and full-automatic intelligent management of the irrigation network. The invention effectively improves the feasibility of large-scale water-saving irrigation in water-deficient regions without electricity, saves water by over 80 percent compared with the traditional irrigation mode, and saves farmland occupied by the traditional irrigation channel by about 3-5 percent.

A control system for supplying fluid medium to an endoscopic apparatus which comprises an operation handle and an insertion tube provided with an insufflation channel, an irrigation channel and a suction channel extending therealong. The control system is provided with a system control unit with at least one source of a first fluid medium, with a source of a second fluid medium, with a source of vacuum and with a multifunctional connector for bringing the operation handle in fluid and electrical communication with the system control unit. The source of the first fluid medium and the source of the second fluid medium are simultaneously connectable to and disconnectable from the insufflation channel and the irrigation channel.

A control system for supplying fluid medium to an endoscopic apparatus which comprises an operation handle and an insertion tube provided with an insufflation channel, an irrigation channel and a suction channel extending therealong. The control system is provided with a system control unit with at least one source of a first fluid medium, with a source of a second fluid medium, with a source of vacuum and with a multifunctional connector for bringing the operation handle in fluid and electrical communication with the system control unit. The source of the first fluid medium and the source of the second fluid medium are simultaneously connectable to and disconnectable from the insufflation channel and the irrigation channel.

An expandable plant growth system by which different varieties of plants and plant clones can be grown indoors with neither seeds nor soil. The plant growth system includes a plurality of tiers that are stacked one above the other. Each tier includes a water support tray that surrounds a hollow plant support frame. A root irrigation channel runs around each of the water support trays. Water is pumped from a reservoir to the root irrigation channels around the water support trays. The plant support frame retains the plants such that the roots thereof are held within the root irrigation channels to receive water and nutrients therefrom. Water is returned to the reservoir under the influence of gravity by a series of water transfer tubes which connect the root irrigation channels to each other and to the reservoir.

The invention provides a multi-level irrigation channel automatic control method based on a model prediction control algorithm, which belongs to the field of irrigation water transmission and distribution automatic control and agricultural water resource management. The design data and operation condition data of the multi-level irrigation channel are firstly acquired, and a channel control modelis established and converted to a state space equation form; the future output of the irrigation channel water transmission and distribution system is then predicted, and according to the operation conditions, a model prediction control algorithm object function and recognition constraints are established; and finally, the optimal control quantity is obtained by optimization solution, and safe andeffective automatic control on the multi-level irrigation channel is realized. the model prediction control algorithm is designed based on the design data and the operation conditions of the multi-level irrigation channel, known water intake changes and constraints in operation of the multi-level irrigation channel can be effectively handled, the method can be used for automatic control design onthe multi-level irrigation channel, safe and reliable water supply service can be ensured, and efficient management and utilization of water resources in irrigation areas can be effectively realized.

A multi-filtration auto-drainage / irrigation pipe includes a pipe body, which includes a first drainage and irrigation channel, a second drainage and irrigation channel, a third drainage and irrigation channel, a first drainage and irrigation port, a second drainage and irrigation port and a third drainage and irrigation port. The first drainage and irrigation port is a first filtering layer having first filtering holes uniformly distributed. The second drainage and irrigation port is a second filtering layer having second filtering holes uniformly distributed. The third drainage and irrigation port is a third filtering layer having third filtering holes uniformly distributed. The first drainage and irrigation port is arranged on a pipe wall of the pipe body. The second drainage and irrigation port is arranged between the second and the third drainage and irrigation channels. The third drainage and irrigation port is arranged between the second and the first drainage and irrigation channels. When draining, water flows through the first filtering layer, the second filtering layer, the third filtering layer and the first drainage and irrigation channel, and then is discharged. When irrigating, water flows through the first drainage and irrigation channel, the third filtering layer, the second filtering layer and the first filtering layer, and then is discharged.

The invention relates to the technical field of water storage equipment and in particular to a green energy-saving rainwater collecting device. The green energy-saving rainwater collecting device comprises a water storage tank. A planting box is installed in the water storage tank. The edge of the top of the water storage tank is fixedly provided with a circle of water collection baffle. The interior of the water collection baffle is fixedly provided with a solar electric plate. The top of the water storage tank is fixedly provided with a filtering screen plate. One opposite face of the planting box is provided with a sliding chute. The sliding chute is internally provided with a slider. One side, away from the sliding chute, of the slider is fixed at one side of the filtering screen plate. The periphery of the bottom of the planting box is fixedly provided with a floating box. The floating box is a sealed hollow structure. One side of the exterior of the water storage tank is fixedlyprovided with a water pump. The water pump is connected with the floating box through a guide pipe. The bottom of the water pump is connected with a storage battery through a lead. One side, away fromthe water pump, of the storage battery is connected with the solar electric plate through the lead. One side, positioned on the upper edge of the floating box, of the planting box is provided with aplurality of irrigation channels. A gravity sensor is fixed below one side of each irrigation channel. The gravity sensor is connected with the water pump through the lead. The green energy-saving rainwater collecting device is simple in structure, has the market prospect, and is suitable for popularization.

A control system for supplying fluid medium to an endoscopic apparatus which comprises an operation handle and an insertion tube provided with an insufflation channel, an irrigation channel and a suction channel extending therealong. The control system is provided with a system control unit with at least one source of a first fluid medium, with a source of a second fluid medium, with a source of vacuum and with a multifunctional connector for bringing the operation handle in fluid and electrical communication with the system control unit. The source of the first fluid medium and the source of the second fluid medium are simultaneously connectable to and disconnectable from the insufflation channel and the irrigation channel.

The invention relates to a U-shaped anti-seepage channel grooving process and the device thereof, firstly excavating earth channel with U-shaped transect, arranging U-shaped concrete block in the earth channel, and covering the top and grooving, where the two top ends of the U-shape are provided with outward top wings. And the device can make continuous seamless U-shaped concrete block on the spot, able to raise irrigating speed, reduce loss of soil and water, reducing water feeding cost, improve farm appearance, and improve yield and quality of farm produces.

The invention discloses a self-bucket-tipping type irrigation water amount measuring device. The device comprises a water passing tank, a tipping bucket, a water inlet gate and a measuring system usedfor measuring the irrigation frequency of the tipping bucket; the tipping bucket is rotatably connected with the water passing tank, the water inlet side of the water passing tank is provided with afirst opening matched with the water inlet gate, the water outlet side of the water passing tank is provided with a second opening matched with the tipping bucket, the front end of the tipping bucketextends out of the second opening, and the water inlet gate is slidingly connected with the first opening; in the water inlet state, the water inlet gate is in a low position so that water in an irrigation channel can enter the tipping bucket, the tipping bucket is transversely distributed in the water passing tank, the center of gravity of the tipping bucket is gradually transferred towards the front end of the tipping bucket along with the increase of the water inlet amount, when the water level in the tipping bucket reaches a calibration value, the tipping bucket tips over clockwise under the action of the gravity of the tipping bucket, the water inlet gate is synchronously driven to ascend to separate the irrigation channel from the tipping bucket, and the water in the tipping bucket flows into farmland. According to the self-bucket-tipping type irrigation water amount measuring device, intermittent and equivalent water passing is achieved through a balanced bucket tipping mechanism, and the irrigation water amount in the farmland is accurately measured.

A device useful for spreading apart and holding open a body cavity which includes an illumination device for illuminating the body cavity and an irrigation channel for irrigating the body cavity during diagnostic and / or surgical procedures.

A hollow fiber membrane module is used for solid-liquid separation operations in water treatment or chemical, pharmaceutical and other fields. It is characterized in that it belongs to the submerged membrane module. Curtain membrane element (1), upper water collection pipe (2) and lower water collection pipe (4); the two water collection pipes are not only used as a collection channel for filtered water and a flushing channel during membrane cleaning, but also a supporting structure for the membrane module ; The curtain membrane element (1) communicates with the water collection pipes (2) and (4) through a socket interface, with a flexible sealing ring in between, and the curtain membrane element (1) is fixed on the water collection pipe by an arc clamp Above (2) and (4); the connection between the curtain membrane element (1) and the water collecting pipes (2) and (4) is a detachable structure.

A linear hydro-kinetic power generation system generates electrical power from low head water, such as rivers or irrigation channels. The linear hydro-kinetic power generation system includes a paddle system configured to travel in a continuous loop when acted upon by the low-head water. The linear hydro-kinetic power generation system also includes a linear electric power generation subsystem configured to generate electricity as the paddles travel along the continuous loop.

An automated irrigation gate system and method for regulating water levels in irrigation channels automates control of water through an irrigation channel based upon water levels, water flow rate, and ambient environmental conditions in the irrigation channel and an adjacent agricultural region. The system comprises at least one irrigation regulation device operationally attached to the irrigation channel. The irrigation regulation device regulates fluid flow through a channel opening in the irrigation channel through use of a gate. A fluid sensor monitors the level of fluid in the channel and an adjacent agricultural region. The fluid sensor also monitors the flow rate of the fluid flowing from the channel to the region. An environmental sensor monitors environmental conditions ambient to the region. A control portion comprises a processor that calculates the data to selectively displace the gate between an open position and a closed position relative to channel opening.

A northeast region paddy field classification and information extraction system and a method are disclosed. The system comprises four portions of data preparation, paddy field classification, attribute addition and paddy field extraction. According to northeast-region cultivated land utilization realities, the paddy fields are divided into a ''well irrigation paddy field'' and a ''canal irrigation paddy field''. The well irrigation paddy field is the paddy field which is irrigated by underground water pumped through using a motor-pumped well. The 'canal irrigation paddy field is the paddy field which is irrigated by water sources of a canal system irrigation channel, a lake, a river, a reservoir, a pond and the like. Through a land, by using a current state data, a high-resolution remote sensing image, land reclamation data and other data, according to a canal system distribution state, classification and extraction of the 'well irrigation paddy field and the canal irrigation paddy field are realized through visual interpretation. Generally speaking, the paddy field in an irrigated area is the canal irrigation paddy field and the canal irrigation paddy field has relatively complete channel systems of a main canal, a branch canal, a lateral canal, a sublateral canal and the like; a canal system of a well irrigation paddy field area is simple and does not form a system; a surrounding electro-mechanical well is radiated outwardly; the channel is narrow; and a northeast region well irrigation paddy field area generally has a sunning water pool with a large area.

The invention discloses a reinforced concrete-steel structure hybrid gravity foundation for offshore wind power. The reinforced concrete-steel structure hybrid gravity foundation comprises a caisson base and an upper steel support structure, wherein the caisson base has a gravity type reinforced concrete cavity structure; the steel support structure is fixed on the caisson base; the top end of the steel support structure is provided with a foundation ring which is connected with a fan tower; the caisson base and / or the steel support structure is provided with an irrigation channel which is communicated to the cavity of the caisson base. The invention further discloses a construction method of the reinforced concrete-steel structure hybrid type gravity foundation for offshore wind power. Compared with an ordinary jacket and single pile foundation, the reinforced concrete-steel structure hybrid gravity foundation has the advantages that the advantages of a reinforced concrete structure and a steel structure are combined organically; the reinforced concrete cavity structure is taken as a foundation base, and the steel structure is taken as an upper support structure; a pile foundation is not required; the foundation is made on the land, is assembled integrally, and can be transported by means of semi-submersible barge or the own buoyance. The reinforced concrete-steel structure hybrid gravity foundation is easy and convenient for construction, is shorter in the construction period, is economical, and has a wide application prospect in an offshore wind power project.

The invention discloses a rock slope greening, rain collecting and water storing irrigation system. The rock slope greening, rain collecting and water storing irrigation system comprises a slope body,wherein a plurality of rows of planting platforms are arranged on the slope body; each planting platform is provided with planting ditches, and the inner edge of each planting platform is provided with a plurality of planting holes which are perpendicular to the slope body; a rain collecting pool is arranged at the top of the slope body, and an automatic irrigation device installation cavity is formed in the top of the slope body; an outer sleeve is installed in the automatic irrigation device installation cavity, and an adjusting hole and an irrigation hole are vertically formed in the outersleeve in a penetrating manner; a middle adjusting shaft is rotatably connected to the inside of the outer sleeve, and an adjusting channel and an irrigation channel are vertically formed in the middle adjusting shaft in a penetrating manner; a moment arm is arranged at one end of the middle adjusting shaft, and is connected with a soil placing groove; the middle adjusting shaft is connected withthe automatic irrigation device installation cavity through a torsion spring; and a reservoir is arranged at the bottom of the slope body, and collects surface runoff for vegetation irrigation. Vegetation is adopted to carry out greening on a rock slope, and the rock slope greening, rain collecting and water storing irrigation system has functions of rain collection, water storage, automatic irrigation and water resource recycling to improve a slope protection effect.

The invention discloses a system and a method for controlling non-point source pollution and recycling nitrogen and phosphorus of paddy fields, belonging to the technical field of pollution prevention. The system comprises a water collection unit, a grid filtering unit, a buffer unit, a nitrogen-phosphorus adsorption unit, a flow on-off control unit, an artificial wetland, a natural water storage facility and a water conservancy recharge unit. When water is drained from the paddy fields, water sequentially flows through each unit, phosphorus and nitrogen are adsorbed through nitrogen-phosphorus adsorption substances and are absorbed by the artificial wetland, so that the contents of nitrogen-phosphorus substances are further reduced, and the purpose of reducing the eutrophication of a water body is achieved; when the paddy fields are irrigated, water enters irrigation channels through the adsorption unit, absorbed substances nitrogen-phosphorus substances are released into irrigation water through desorption and are reused in the paddy fields. Compared with the prior art, the system and the method have the advantages that when the water body pollution is maximally controlled, the recycling of the nitrogen-phosphorus substances and the harmony between the facility and the nature are realized, and the purposes of controlling the pollution and saving the fertilizer applying cost are achieved.

A surgical instrument (22) for irrigating a frontal sinus target site of a patient including a handle, an introducer (42), an irrigation channel (60), a nozzle (44), and an actuator assembly (46). The introducer extends from the handle and defines a proximal segment and a distal segment. At least a portion of the proximal segment (110) is rigid and linear and at least a portion ofthe distal segment (112) is rigid and relatively curved. The nozzle is fluidly connected to the irrigation channel, and is rotatably maintained at a distal end (114) of the introducer. The actuator assembly includes an actuator (140) maintained by the handle and connected to the nozzle. Movement of the actuator causes the nozzle to rotate relative to the introducer. The introducer can be sized and shaped in accordance with a size and shape of the nasal passageway / frontal sinus of a human aduit.