59 results about "Jet injector" patented technology

The invention relates to a method for minimizing mean blood glucose levels in an insulin dependent patient by administering insulin to the patient in a sufficiently fast manner to provide a difference of 50% or less between high and low blood glucose levels. Advantageously, the insulin is administered to the patient by jet injection and the high and low blood glucose levels differ by an amount that is less than that which would be obtained after injection of insulin by a conventional needle syringe. The invention also relates to a method for reducing mean blood glucose levels in an insulin dependent patient that is receiving insulin through a conventional syringe and needle arrangement. This method provides for administration of the insulin to the patient by jet injection rather than by the syringe by substituting a jet injector for the syringe.

A method of preparing and ablating heart tissue includes a pre-treatment step of delivering a jet of conductive fluid to a portion of heart tissue. The conductive fluid is delivered using an injection device such as a hand-held jet injector, probe, or catheter. After injecting the heart tissue with the conductive fluid, RF energy is delivered to the site of the injection to form a lesion. The method enables a physician to produce large and accurately placed lesions within the treated tissue.

In the present invention, the impedance between patient's body and the jet injection drug delivery device is measured through the liquid jet during the drug delivery process. The liquid jet completes the electrical circuit formed by impedance monitor, drug delivery device, and the patient's body. When the jet pierces stratum corneum, the impedance in the circuit immediately decreases, thus an indicating the successful drug delivery. The impedance monitor then provides a signal, visible, audible, or electronic, indicating that the process of the drug delivery through skin was successful.

The present invention discloses a medicament cartridge for an injection device, such as a syringe or a jet injector. The medicament cartridge according to the present invention includes a tube having a lumen, a needle operatively associated with an end of the tube and having a piercing end extending into the lumen, a second stopper located within the lumen near the other end of the tube and moveable within the lumen, and a first stopper located within the lumen, covering the piercing end of the needle, and moveable within the lumen. Firing the injection device to commence an injection may move the second stopper toward the needle, which compresses medicament located in the lumen between the first stopper and the second stopper. The compression of the medicament moves the first stopper into contact with the piercing end of the needle so that the piercing end pierces the first stopper to thereby create a fluid pathway for the medicament through the needle. Other methods of piercing the first stopper are anticipated as a means of activating the injection device. The disclosed medicament cartridge can be safely and aseptically manufactured and filled during assembly and, once manufactured and filled, eliminates contact between the medicament and the needle during storage.

Ablation apparatus including an active electrode in electrical communication with an energy source, and a jet injector capable of propelling an electrically conducting fluid to a skin surface, the jet injector being positioned relative to the active electrode such that the electrically conducting fluid is in electrical communication with the active electrode.

The present invention relates to a jet injector system with a hand piece. The present invention generally comprises a power unit, a medicine unit, an energy unit, a supply bottle, and a hand piece. The hand piece and power unit may be separate components connected to each other by a high pressure hose, which gives the user more flexibility. A valve assembly having a ball lock assembly and a needle assembly controls the release of medication from the high pressure hose into the hand piece and out a nozzle into the subject.

The invention discloses a steam-free passing water cooler. Two heads of a venture sleeved in an outer sleeve pipe are communicated with cooling water nozzles and the inner chamber of a main steam/water separation box, two ends of a center hole of a front steam/water separation box are respectively provided with a positive puffing split-jet injector and a transition catheter, two head of a front air/water delivery pipe are respectively communicated with the front steam/water separation box and the inner chamber of a steam condenser, a backwater balance box is sleeved with a nozzle box, and the plurality of cooling water nozzles are arranged on the nozzle box. The upper side wall of the main steam/water separation box is provided with the steam condenser, the cooling water nozzles are communicated with the inner chamber of the steam condenser, a main drainage pipeline is communicated with the lower side of the main steam/water separation box, a negative puffing water ring split-jet injector extends into the inner chamber of the main steam/water separation box, a negative puffing water pipe on a negative puffing water box is communicated with a cooling water inlet pipe, a back air/steam delivery pipe on a back steam/water separation box communicated with the negative puffing water box is communicated with the steam condenser, and a negative puffing split-jet injector is sleeved at the center of the back steam/water separation box. The condensed steam can be collected, and the service life of equipment can be prolonged.

A method and apparatus for performing jet injections using piezoelectric technology. A jet injector apparatus includes a reservoir having a variable capacity for holding a liquid to be delivered to a biological tissue via a jet injection. A nozzle is disposed at a first end of the reservoir with at least one opening for allowing the liquid to be expelled from the reservoir. The capacity of the reservoir may be altered by the actuation of a piezoelectric transducer located at a second end of the reservoir

The present invention discloses a blast furnace coal injection method adopting a coke oven coal gas as a coal injection conveying carrier. The method comprises the following steps that: coke oven coal gas adopted as a coal powder injection carrier is subjected to a dehydration treatment, and then is conveyed to a coal gas compressor to carry out pressurization; with the coke oven coal gas pressurized by the coal gas compressor, coal powder in an injection tank is injected to a coal powder distributor; and the coke oven coal gas and the coal powder distributed to various air ports of a blast furnace through the coal powder distributor are injected into the blast furnace through a coal powder jet injector. According to the present invention, the coke oven coal gas enters the blast furnace to participate in the chemical reaction so as to reduce iron ore and provide a coke ratio reduction effect; hydrogen in the coke oven coal gas is changed into water vapor after the reaction, such that no environmental pollution is generated, and carbon emission is reduced; nitrogen content in the coke oven coal gas is low, such that a heat value of the blast furnace coal gas after the reaction is increased; and the coke oven coal gas is mainly subjected to a heat emission reaction in the blast furnace, such that theoretical combustion temperature increase and coal injection increase are easily achieved.

A device and two-step sequential method for providing medication for injection and infusion by a jet injector includes a cassette which connects an injector system to a reservoir. The cassette forms a fluid pathway at an interface of a cassette lower body and a cassette upper body. The cassette also forms an impulse chamber with a nozzle leading therefrom. The fluid pathway interconnects the reservoir with the impulse chamber. The medication flows from the reservoir along the fluid pathway and into the impulse chamber. Force from an impulse generator drives the fluid medicament from the impulse chamber through the nozzle, out an orifice in a tip of the nozzle, and into the skin of a patient. To prevent the pressure waves generated by the jet injector from damaging a glass reservoir, the fluid pathway is formed with pressure attenuators.

The invention provides a jet injector with variable nozzle position. The currently applied jet injector has fixed structure, and the nozzle position is constant in the jet injector, but the jet injector always has an asymmetric shape so that the influence of nozzles in different positions on the jet injector performance is needed to research, and jet injectors in different shapes are needed in practical tests to cause labor and material waste. The jet injector provided by the invention can randomly changes the nozzle position and adopt the technical scheme that a lateral cover (2) and a pump body (3) are connected together through thread, a nozzle (1) can be connected with any threaded hole on the lateral cover (2), and other threaded holes on the lateral cover (2) are sealed and connected with threaded cylindrical pins (4). By flexibly changing the related connecting position of the lateral cover (2) and the pump body (3) and the connecting position between the nozzle (1) and the threaded hole on the lateral cover (2), the nozzle position in the jet injector is changed, and the experimental aim is achieved.

The invention belongs to the aquaculture engineering field, and particularly relates to a closed circulating aquaculture system suitable for multilayer stereoscopic cultivation of abalone. The circulating aquaculture system suitable for the multilayer stereoscopic cultivation of the abalone is characterized in that a plurality of aquaculture tanks are installed on a support, a plurality of wave generation hoppers hinged on the support are arranged above each aquaculture tank, the interior of each aquaculture tank is divided into a plurality of tank bodies which are communicated, one water outlet side of each aquaculture tank is communicated with a filter tank, the lower portion of each filter tank is a sewage collection tank, a filter device is arranged on the upper portion of each filter tank, all the filter tanks are respectively communicated with a temperature regulation box with a heat exchanger installed inside, the heat exchanger is communicated with a refrigerator, temperature of seawater is controlled through the refrigerator and the heat exchanger, a water pump, a foam separator, a biological tank and an oxygen tank are sequentially communicated with the temperature regulation box, the foam separator is communicated with a jet injector, and an aeration disk communicated with an air pump us arranged in the biological tank. The circulating aquaculture system suitable for the multilayer stereoscopic cultivation of the abalone has the advantages of continuously reusing aquatic water, being capable of controlling temperature, manually generating waves, achieving rapid and thorough water purification treatment, being convenient to operate, saving energy and protecting environment and the like.

This invention relates to a gas-liquid mixed fuel sprayer containing an adjusting connecting cap, an outer body, a jet-injector, an isolation ring pad and a spread spring suitable for hydrogen-mellow mixed combustion internal combustion engines and turbine engines, which is advantaged that low energy combustion and extremely high diffusibility of hydrogen is helpful to complete combustion of liquid fuel, which is good in dispersed pulverization and burnt fully, early burning and deflagration of hydrogen is restrained to a certain stage, so the fuel system and its control method can be simplified greatly.

An automatic jet injector for administering tissue is provided with a housing including a grip and a pushbutton; a syringe positioning device on a top of the housing and including an intermediate support and a rear pushing board having a lower through hole and a threaded hole under the through hole; a power source in the housing and including a power supply configured to supply power to the power source by pressing the pushbutton; a fastening member in the housing and being adjacent to a rear end of the housing; a positioning member being adjacent to the power source; a reciprocating screw having a front end operatively connected to the power source and a rear end fastened in the fastening member; a rod having a front end fastened in the positioning member and a rear end fastened in the fastening member; and a control device.

The present invention discloses a needle-assisted injector (10), which has a locking mechanism to reduce inadvertent contact with the needle (20) and prevent the needle from being reused intentionally. Upon activation of the power source, a portion of the needle extends through the nozzle assembly (12) and penetrates the outer layer of the skin to deliver the medicament to a deeper area by jet injection. After activation, the needle retracts into the nozzle assembly. The locking mechanism consists of a needle holder (260) and a locking ring (700), which cooperate to prevent re-injection when the syringe is activated.

A subconjunctival injection apparatus for administering a pharmacological agent formulation to a subconjunctival compartment of an eye, the apparatus including a jet injector having force generating means that is adapted to generate sufficient force to expel the pharmacological agent formulation from the jet injector and through the conjunctiva. In one embodiment of the invention, the jet injector comprises a needleless jet injector. In one embodiment, the needleless jet injector provides a delivery pressure in the range of approximately 100-1000 psi.