147results about "Filtering accessories" patented technology

[Problem] The purpose of the present invention is to provide a portable anticancer agent container for preventing exposure and infection to the human body caused by chemical solution leakage that arises during a removal operation of a coupling connector at the time of system cleaning using a cleaning solution. [Solution] Provided is a pressurization-type drug injector having a drug exposure preventive function and having a system cleaning function, the pressurization-type drug injector comprising: a reservoir that has a chemical solution filling opening and a chemical solution discharging opening; a pressurization deformation means that undergoes pressurization and deformation by the injection of a chemical solution and that pushes out the chemical solution by a force caused by restoration of the pressurization and deformation; a flow rate control means that adjusts the flow rate of the chemical solution by resistance; a system cleaning port that includes a cleaning solution injection opening, a chemical solution filling opening, and a liquid discharging opening; and a case that contains therein said reservoir, said pressurization deformation means, and said system cleaning port. The case has openings respectively in the vicinity of the chemical solution filling opening, the system cleaning injection opening, and the chemical solution discharging opening. The chemical solution being filled is filled into the pressurization deformation means from the chemical solution filling opening of the reservoir, and moves from the chemical solution discharging opening of the reservoir to the exterior of the container via the flow rate control means. A cleaning solution is injected from the injection opening of the cleaning port arranged downstream from the flow rate control means, and moves to the exterior of the container. The pressurization-type drug injector having a drug exposure preventive function is characterized in that the periphery of the cleaning port is completely covered by a sterile seal, and thus, the cleaning port injection opening is kept clean until use.

A disposable fluid transfer and mixing device is disclosed and includes an injector support surface for receiving an injection device thereon. A lyophilized drug vial, a diluent vial and a syringe are also attached to the device. The device features fluid passageways and a manual valve that may be manipulated so that the syringe may be used to transfer diluent from the diluent vial to the lyophilized drug vial, for reconstitution of the drug. The valve may also be configured so that the reconstituted drug is transferred from the lyophilized drug vial to the injection device. An automated transfer and mixing device receives an injection device, a lyophilized drug vial and a diluent vial and transfers diluent from the diluent vial to the lyophilized drug vial and shakes or vibrates the lyophilized drug vial to reconstitute the drug. The device then transfers the reconstituted drug from the lyophilized drug vial to the injection device.

A method of preparing a giving set for administration of intravenous therapy to a patient, in a pharmacy. The method comprising steps of providing a filled IV bag (10) with an outlet port (12), connecting an IV line (20) to the outlet port, and connecting a gas trap device (30) to a distal end of the IV line. The trap device has a chamber (31) and a priming port (34) which is open. The method further includes squeezing the bag to force gas from the bag and through the line and out of the trap device. When liquid reaches the trap device (30) and substantially fills the chamber, the priming port is closed, thereby providing a pre-primed giving set comprising the bag, the line and the trap device filled with liquid. The actuator may have a roller which is forced in a direction towards the outlet port while the bag is constrained in a housing (51).

A device for delivering insulin or insulin analog formulations and measuring subcutaneous glucose concentrations may include a hollow tube and a current-type glucose sensor located proximal to the distal end of the hollow tube. The current-type glucose sensor may include a redox mediator and an enzyme comprising glucose oxidase or glucose dehydrogenase. Applying a bias potential allows the electrode layer of the current-type glucose sensor to remain substantially free from electropolymerization of the excipients of the insulin or insulin analog formulation during continuous operation of the current-type glucose sensor. The sensitivity of the current-type glucose sensor to subcutaneous glucose concentrations can be maintained in the presence of insulin or insulin analog formulations.

A method may comprise (a) inserting an insulin delivery device subcutaneously into a body of a subject, which comprises an amperometric glucose sensor comprising an electrode layer comprising an indicating electrode and underlying a redox-catalytic layer comprising a redox mediator; (b) using said insulin delivery device to deliver an insulin formulation (e.g., comprising a phenol or cresol excipient) subcutaneously to said subject; and (c) using said amperometric glucose sensor to measure a subcutaneous glucose concentration, which comprises using said redox-catalytic layer to allow electron transfer from subcutaneous glucose to said indicating electrode sufficient to cause a response of said amperometric glucose sensor at an applied bias potential of no more than +250 millivolts, wherein (b) and (c) are performed at the same time for at least one hour, while maintaining a sensor sensitivity of at least 50% of an initial sensor sensitivity for up to one hour.

The invention belongs to the technical field of medical instruments, and particularly relates to an infusion air supply device. The invention aims to provide an infusion air supply device which is composed of a compressed air storage tank, a soft air bag, a filter membrane, a puncture needle, a protective sleeve, a pipeline and a clamp, compressed sterile clean air is stored in the compressed air storage tank, and an air inlet device and a separated air inlet device on a disposable infusion apparatus (air inlet gravity infusion type) can be replaced. When the infusion air supply device is used, the easily-folded thin tube with the closed end, inserted into the soft air bag, on the compressed air storage tank is broken firstly, compressed sterile clean air is input into the soft air bag, an air inlet device on the disposable infusion apparatus (air inlet gravity infusion type) is closed by medical staff before infusion, then a puncture needle on the infusion air supply device is inserted into an infusion bottle, and then the infusion air supply device is closed. During infusion, a clip on a pipeline of the infusion air supply device is opened, and when the pressure of air in an infusion bottle is lower than the atmospheric pressure, sterile clean air in the soft air bag automatically enters an infusion system to be supplemented, so that closed normal gravity infusion is realized in the whole process, and adverse events of infusion can be reduced.

The utility model discloses a filtering three-way structure of an infusion apparatus. A three-way main body comprises a straight pipe section and a side pipe section which are communicated with each other; a communication port communicated with the bypass pipe section is formed in the straight pipe section; the filtering assembly comprises a filtering main body, a first filtering sheet and a second filtering sheet; the filtering main body is provided with a main flow channel and a branch flow channel which extends from the outer wall and is communicated with the main flow channel; a first slot for cutting off the main flow channel and a second slot for cutting off the branch flow channel are formed in the filtering main body; the first filter sheet is in insertion fit with the first slot; the second filter sheet is matched with the second slot in an inserting manner; the filter main body is provided with an assembly position which is inserted into the first end of the straight pipe section along the axial direction; and at the assembly position, the outer wall of the filter main body is in sealing fit with the inner wall of the straight pipe section, and the branch flow channels are communicated with the communication ports. According to the tee joint, the filter pieces in the two channels of the tee joint body can be disassembled, assembled and replaced at the same time, disassembly and assembly of the filter pieces are convenient, time and labor are saved, actual application requirements are effectively met, and practicability is high.

The invention relates to the technical field of medical instruments, in particular to a medical medicine quantitative infusion device which comprises an intravenous needle, a Luer taper liquid medicine filter, a bottle stopper puncture outfit, a Murphy type drip chamber, an infusion hose and a flow rate adjusting mechanism. An automatic liquid stopping mechanism is arranged in the Murphy type drip chamber and comprises a cylindrical shell fixedly connected to the inner bottom wall of the Murphy type drip chamber. By arranging the flow speed adjusting mechanism, the abutting arc block can be driven to stably move along the guide rod by rotating a flow speed adjusting knob, an infusion hose is accurately extruded to change the diameter of a pipeline, fine adjustment of the infusion flow speed of liquid medicine is achieved, and compared with a traditional speed regulator, the self-locking characteristic is better; the problem that the infusion speed is too high or too low due to poor stability of a speed regulator is effectively solved, the infusion speed can be flexibly set according to the medicine type, the illness state of a patient and the tolerance degree, the accuracy of the medicine infusion dosage and speed is guaranteed, and the medicine treatment effect is improved.

Filter for medical infusion lines comprising a box-like body (1) having an inlet connector (6) and inside which there is arranged a plate-like element (8) on whose one or both opposite faces there are formed respective channels (9) placed in communication with an outlet connector (7). Filtering hydrophilic membranes (10) separate the channels (9) from at least one interspace (12) placed in communication with the inlet connector (6). With the outlet connector (7) there is operatively associated an overpressure valve (14) incorporated in the box-like body (1) of the filter.

Provided is a novel hemostasis valve-equipped indwelling needle that is capable of discharging air in an internal flow path. A hemostasis valve-equipped indwelling needle 10 including a cannula 12 to be inserted percutaneously into a blood vessel on a distal end side thereof, a link connector 14 on a proximal end side thereof, an internal flow path 18 extending from the cannula 12 to the link connector 14, and a hemostatic valve 16 disposed inside the link connector 14. An air vent passage 118 that allows the internal flow path 18 to communicate with an external space is formed in the link connector 14 further on the cannula 12 side than the hemostatic valve 16, and a filter 120 that allows gas to pass through but does not allow liquid to pass through is mounted in a compressed state on the air vent passage 118.

The invention provides a dual-purpose infusion apparatus capable of being connected with an indwelling needle, and relates to the technical field of medical instruments. The infusion tube is provided with a drip cup and a flow regulator, and the tail end of the infusion tube is fixedly communicated with a dual-purpose connector; the dual-purpose connector is provided with a remaining needle connecting end and a conventional infusion end, the outer portion of the conventional infusion end is connected with an infusion needle head through a connecting pipe, switching sealing assemblies are arranged inside the remaining needle connecting end and the conventional infusion end respectively, and warning rings are arranged outside the remaining needle connecting end and the conventional infusion end respectively. By arranging the dual-purpose connector and the switching sealing assembly, two modes of connection with a conventional infusion device or connection with an indwelling needle can be flexibly switched, additional matching with an adapter connector or a special infusion device is not needed, clinical diversified infusion requirements are met, meanwhile, stable connection of the connecting position can be guaranteed, falling off or connector pollution can be avoided, and the infusion device is convenient to use. The problem that an existing infusion apparatus is not suitable for being connected with an indwelling needle is solved.

The utility model relates to the technical field of infusion apparatuses, in particular to an infusion apparatus with a filtering and dosing structure, which comprises an upper infusion tube, a filter cartridge, a lower infusion tube, a coarse filter layer, a fine filter layer, an ultrafiltration layer and a flushing component, the filter cartridge is connected with the upper infusion tube, the lower infusion tube is connected with the filter cartridge, the coarse filter layer is connected with the filter cartridge, the fine filter layer is connected with the coarse filter layer, and the ultrafiltration layer is connected with the flushing component. The ultra-filtration layer is connected with the fine filtration layer, the flushing component is arranged on the filter cartridge, the coarse filtration layer is used for intercepting large-particle impurities, the fine filtration layer is used for further filtering small particles, and finally, the ultra-filtration layer is made of a nano-scale filtration material, so that the purity of a liquid medicine solution is ensured; the filtered liquid medicine is input into a human body through the lower infusion tube and the connecting needle head, so that the influence of impurities in the liquid medicine on the human body is avoided.

The invention discloses an infusion port which is characterized by comprising an injection seat shell (1), a channel (2) is arranged at the upper end of the injection seat shell (1), a guide pipe (3) is arranged at the lower end of the injection seat shell (1), and the infusion port is characterized in that a first cavity (4), a filter plate (6) and a second cavity (5) are arranged in the injection seat shell (1); an anti-backflow box (13) is fixedly arranged in the lower end of the injection seat shell (1), a discharge port (14) is formed in the upper portion of the anti-backflow box (13), a discharge channel (18) is formed in the anti-backflow box (13) and communicated with a guide pipe (3) of the discharge port (14), and an elastic piece (19) is fixedly arranged on the inner wall of the lower end of the discharge channel (18); and the inner wall of the upper end of the discharge channel (18) is fixedly provided with a stop block (20) which is inclined by more than 90 degrees towards the direction close to the discharge port (14). The catheter can be used for preventing smooth circulation of liquid from being hindered when the catheter is bent or pressed externally and preventing blood from flowing backwards when infusion is stopped.

The invention relates to the technical field of stem cell introduction, and discloses a stem cell introduction device which comprises a conduction mechanism, a guide sliding butt joint mechanism is arranged at the top end of the conduction mechanism, a detachable driving mechanism is arranged at the bottom end of the guide sliding butt joint mechanism, and an expansion type turbulent flow mechanism is arranged at the top end of the guide sliding butt joint mechanism. The surface of the guiding and sliding butt joint mechanism is provided with a fixed anti-falling mechanism, the conveying and guiding mechanism comprises an infusion tube, the guiding and sliding butt joint mechanism comprises an installation head and a lower connection threaded ring, and the installation head is fixedly installed at the top end of the infusion tube. According to the stem cell leading-in device, through the arrangement of the conveying and guiding mechanism, the guiding and sliding butt joint mechanism, the detachable driving mechanism, the expansion type turbulent flow mechanism and the fixed anti-falling mechanism, the detachable driving mechanism can be used for driving the expansion type turbulent flow mechanism to perform periodic slow expansion and contraction at a certain frequency during use, so that turbulent flow of liquid medicine is realized; therefore, the mesenchymal stem cells are kept in a suspension state in the intravenous infusion process.

FILTER FOR REDUCING PHENOLIC COMPOUNDS FROM INSULIN AND RELATED INFUSION AND INJECTION DEVICES Provided herein are devices, systems, and methods for the removal of preservatives / excipients / stabilizers from pharmaceutical preparations / medicaments. The devices and systems include a resin for the filtering of preservatives from pharmaceutical preparations. The methods allow for a period of time of incubation of the pharmaceutical preparation in the resin that effectively removes preservatives, while at the same time maintaining the required amount or concentration of active compound in the preparation. Also provided herein are devices, systems, and methods for the controlled release of anti-inflammatory agents in an insulin infusion set.

The infusion apparatus structure comprises a puncture needle, an infusion hose, a drip chamber, an adjusting valve, a filter and a needle head, the puncture needle and the needle head are installed at the two ends of the infusion hose, and the drip chamber, the adjusting valve and the filter are sequentially connected in series through the infusion hose. A liquid inlet connector and a liquid outlet connector which are connected with an infusion hose are arranged at the upper end and the lower end of the filter respectively, the interior of the filter is composed of an inner cavity and an outer cavity, the two cavities are separated through a spherical structure composed of a filtering film and a breathable film, and the outer cavity of the filter is divided into a lower liquid cavity and an exhaust cavity through a separation block. A floating ball is mounted in an inner cavity formed by the filtering membrane and the breathable membrane in the filter, and the infusion hose is in sealed connection with the liquid inlet connector; by arranging the filter of a special structure, bubbles and large solid particles in liquid medicine can be filtered and eliminated, meanwhile, the internal bubbles can be automatically discharged, and potential safety hazards possibly occurring in the infusion process are eliminated.

A drug delivery port including a port housing having an inner sidewall defining a fill port cavity and a fill port washer in direct contact with a perimeter edge of the inner sidewall of the port housing such that an intersection between the washer and the perimeter edge define a plurality of filter channels having a cross-sectional flow area of about 0.001 mm2 to about 0.5 mm2 that lie within the fluid pathway of the delivery port. The delivery port also includes a port cover coupled and a pierceable septum compressed between the fill port washer and the port cover configured to allow a needle to pierce through the septum to deliver an injectable fluid to the fill port cavity.

To provide a disposable single-use device for transferring contents of one or more vials to a disposable injection device and mixing them.SOLUTION: A device for filtering a liquid drug comprises a housing including an injectable fluid passage, and a liquid drug filter with a liquid drug pore diameter or a liquid drug effective pore diameter, which is arranged within the injectable fluid passage and which is constituted to remove particulate matter.SELECTED DRAWING: Figure 17

A drug delivery port including a port housing having an inner sidewall defining a fill port cavity and a fill port washer in direct contact with a perimeter edge of the inner sidewall of the port housing such that an intersection between the washer and the perimeter edge define a plurality of filter channels having a cross-sectional flow area of about 0.001 mm2 to about 0.5 mm2 that lie within the fluid pathway of the delivery port. The delivery port also includes a port cover coupled and a pierceable septum compressed between the fill port washer and the port cover configured to allow a needle to pierce through the septum to deliver an injectable fluid to the fill port cavity.

The present invention relates to the technical field of medical instruments. Disclosed are a filtering module and an infusion pump device. The filtering module comprises a housing, a first filtering layer, a second filtering layer, and a silicone plug; a liquid inlet and a liquid outlet are respectively provided on two opposite sides of the housing; the first filtering layer and the second filtering layer are sequentially filled into the housing in the direction from the liquid inlet to the liquid outlet; and the silicone plug covers the liquid outlet, and is in sealing fit with the liquid outlet. The diameter of particulate impurities filtered by the first filtering layer is greater than that of particulate impurities filtered by the second filtering layer. The filtering module disclosed in the present invention can be used for filtering a liquid medicament in an infusion pump device, thereby ensuring the injection effect.

An implantable cranial medical device (100) includes a first fluid flow path, a second fluid flow path, and upper flange portion (110), and a lower portion (120). The upper flange portion (110) is configured to rest on a skull of a subject about a burr hole. The lower portion (120) is configured to be placed within the burr hole. The first fluid flow path may extend from a first opening (150) in the upper flange portion (110) to a first opening (132) in the lower portion (120). The second fluid flow path may extend from a second opening (140) in the upper flange portion (110) to a second opening (134) in the lower portion (120).

The invention relates to a mobile injection assembly (1) for injecting a solution obtained by mixing two solutions having a specific composition, characterized in that it comprises: a first injector (2) having a reservoir (21) suitable for a first solution and connected to a first tube (42); a second syringe (3) having a reservoir (31) suitable for a second solution and connected to a second tube (43); -a mechanism (5) for actuating a respective plunger (23, 33) of the syringe (2, 3); -a 'Y'-shaped connector (6) connected to the first tube (42) and to the second tube (43) and to the first end of the injection tube (41); -a delivery device, such as an infusion device, connected by a port (7) at the end of an injection tube (41), the injection tube (42) being connected to a filter device (8) positioned upstream of the delivery device with respect to the injection flow direction.

This invention relates to the field of implantable drug delivery technology, specifically an implantable subcutaneous drug delivery device, comprising an infusion base, a release capsule fixed to the bottom of the filter slot, a vortex element fixedly connected to the inner side of the manifold, a protective coating on the inner wall of the drug delivery conduit, and a miniature one-way valve fixedly installed inside the drug delivery conduit. This implantable subcutaneous drug delivery device integrates multiple optimized drug delivery structures. The elastic silicone release capsule buffers the drug delivery pressure; the vortex element, composed of a spiral ladder plate and an inverted conical vortex cylinder, creates a stable vortex for uniform drug release; the evenly distributed flow channels of the perforated plate disperse the drug flow rate, reducing local tissue burden; the hydrophilic lubricating coating reduces drug flow resistance and drug precipitation; the heparin coating effectively prevents thrombosis; and the umbrella-shaped miniature silicone one-way valve provides one-way flow, effectively avoiding the risk of backflow of drug and subcutaneous tissue fluid.

The invention discloses a double-face filtering exhaust type filter and a using method thereof, and relates to the field of medical instruments, a first micron filtering membrane is arranged on the upper side in the filter, a second micron filtering membrane is arranged on the lower side in the filter, and the filtering aperture of the first micron filtering membrane is larger than that of the second micron filtering membrane; a graded filtering structure is formed in the filter through the aperture difference of the first micron filtering membrane and the second micron filtering membrane, impurities with large particle sizes are intercepted firstly, then fine impurities are filtered, various impurities in liquid medicine can be comprehensively blocked, the pipeline blocking risk is effectively avoided, meanwhile, the impurities are prevented from stimulating blood vessels of a patient, the safety of the infusion process is guaranteed, and the safety of the infusion process is improved. The first micron filtering membrane and the second micron filtering membrane adopt a conical design, and the wider ends are oppositely arranged, so that the contact area with the liquid medicine is greatly increased.

The utility model discloses a filtering puncture outfit which comprises a puncture part, a mounting cover and a female connector, the mounting cover and the female connector are fixedly arranged on the puncture part, a filtering film is arranged between the puncture part and the mounting cover, and a flexible plug and a valve plug which can be matched with a male connector are arranged in an opening and closing flow channel of the female connector. When the puncture part is inserted into a medicine bottle containing medicine liquid and the female connector is not connected with the male connector, the valve plug can seal the opening and closing flow channel under the elastic acting force of the flexible plug to prevent leakage of the medicine liquid, after the female connector is connected with the male connector, the male connector pushes the valve plug to achieve opening of the opening and closing flow channel, at the moment, the medicine can be filtered through the filtering membrane and then discharged, and the medicine liquid is prevented from leaking. The circulation state of the medicine can be adaptively adjusted along with the connection state of the female connector and the male connector in the using process, and the output control flexibility of the medicine in the using process is greatly improved.