118 results about "Intravenous needles" patented technology

Systems, apparatus and methods are provided through which an injector system automates a process of injecting an individual dose from a multiple dose of a radiotracer material. In some embodiments, the injector system includes a first dose calibrator system that receives a multidose vial of a radiotracer, a second dose calibrator system, an injection pump and an intravenous needle. In some embodiments, the first dose calibrator system and the multidose vial have an integrated shape. In some embodiments, the first dose calibrator system includes a pneumatic arm that receives the multidose vial.

An arterial needle removes blood from the access to an extracorporeal circuit comprising a dialyzer and a venous needle returns the blood to the access site. Blood passes along one side of the membrane of the dialyzer and dialysis fluid along the other side. The concentration (Cd norm and Cd rev) of urea in the dialysate emitted from the dialyzer is measured with the needles in the normal position and in a reversed position. The access flow rate before the arterial needle is calculated according to the formula:in which Keff is the effective clearance of the dialyzer and Qa is the access flow rate.

A blood collection set including a non-patient needle assembly interconnected with an intravenous needle assembly through tubing is provided. The non-patient needle assembly includes a hub assembly adapted for mounting with a blood collection set, and an internal blunting member including a blunted tip. The non-patient needle assembly further includes an external cannula concentric with the internal blunting member and including a non-patient puncture tip adjacent the blunted tip. The external cannula is axially displaceable with respect to the hub assembly between a first retracted position in which the non-patient puncture tip extends beyond the blunted tip and a second activated position in which blunted tip extends beyond the non-patient puncture tip.

A tip of a needle is inserted into large vein of a patient. The needle is mounted in a butterfly device axially engaged to a generally cylindrical housing containing a Y-connector. A pharmaceutically acceptable solution is fed to the needle through the Y-connector to the housing. A quartz optic fiber is fed through the housing and needle to the tip of the needle in the patient's venous system. A source of UV and visible light directs both UV and visible light alternatively through the optic fiber to the patient's venous system to kill pathogens in the venous system.

Apparatus and methodology are disclosed for entrapping a used intravenous needle in a needle trap and removing the needle and the trap from a catheter tube so as to avoid risk of injury to both the patient and the medical attendant.

A needle point protective device for hypodermic and intravenous needles, catheter introducers, and similar devices protects users from injury and infection. The needle point protective device includes a needle point guard that is slidably mounted within the needle handle. In use, the needle point guard is integral with a cannula guide that is engaged with the needle cannula with enough force to cause the needle cannula to be subject to spring tension when the needle point is retracted proximal to the needle point guard, the needle point springs downward and behind the needle point guard. In one embodiment, the needle point guard is held in position manually as the needle is retracted. In another embodiment, the needle point guard is held in place automatically as the needle is retracted.

The invention discloses an intravenous needle assembly machine. The intravenous needle assembly machine comprises a machine frame, on which a rotary disc is arranged. The circumferential direction of an outer ring of the rotary disc is provided with multiple assembly stations. A shell feeding mechanism, a sheath feeding mechanism and a needle seat feeding mechanism, which surrounds one side of the rotary disc and is distributed in an arc-wise mode and capable of feeding corresponding assemblies to the assembly stations, are arranged on the machine frame. A flat needle seat mechanism capable of secondarily pushing needle seats to sheaths and an assembly mechanism capable of assembling the sheaths and the shell are further arranged on the machine frame. The flat needle seat mechanism and the assembly mechanism are located on the other side of the rotary disc. The rotary disc is connected with a rotary driving mechanism used for dririving the rotary disc to perform circumferential rotation. A gluing system is arranged on the machine frame. The intravenous needle assembly machine has following beneficial effects: during package, intravenous needles are not easily attached to germs so that great safety is obtained; additionally, high automation degree is achieved and assembly efficiency is remarkably improved in favor of large-scale production; and the intravenous needle assembly machine is reasonable in overall design, simple in structure and high in practicability.

The invention relates to an infusion set and belongs to the technical field of medical apparatus and instruments. The infusion set comprises a puncture outfit, an upper conduit of a drop funnel, a drip tube, the drop funnel, a lower conduit of the drop funnel, a regulator and an intravenous needle which are sequentially connected. The liquid outlet end of the intravenous needle is sleeved with a sealing sleeve; an air exhaust pipe is arranged between the drop funnel and the lower conduit of the drop funnel; at least one air exhaust hole is formed at one end, which is positioned in an inner cavity of the drop funnel, of the air exhaust pipe; a liquid medicine passing membrane made from a material which is permeated by water is arranged above the air exhaust pipe; a group of pores are formed on the liquid medicine passing membrane; the liquid medicine passing membrane allows liquid medicine and gas to pass through but blocks insoluble granules with the diameter of greater than the diameter of the pores in the liquid medicine; the sealing sleeve seals the liquid outlet end of the intravenous needle; and an air filter is arranged on the sealing sleeve. The infusion set is simple in structure and has self-exhausting and automatic liquid-stopping functions.

The invention discloses a disposable anti-pricking venous blood sampling needle which comprises needle sheath, a venous needle tube, a needle handle, a fine hose, a needle seat, a puncture needle seat, a blood sampling needle tube, a rubber sheath and an anti-pricking sheath. The venous needle tube, the needle handle, the fine hose and the needle seat are sequentially connected via adhesive, the puncture needle seat and the blood sampling needle tube are adhered via adhesive, the needle sheath is sleeved on the needle handle, the puncture needle seat is connected in the needle seat in a screwed manner, and the rubber sheath protects the blood sampling needle tube therein and is sleeved at the other end of the puncture needle seat in a clamped manner. The disposable anti-pricking venous blood sampling needle is characterized in that the anti-pricking sheath is sleeved on the fine hose in a clamped manner and can slide on the fine hose back and forth, two sides of the anti-pricking sheath are folded in a pressed manner and then are fastened, after fastening, the rear of the anti-pricking sheath forms a closed ring, and a tortuous slot is axially formed on the side wall of the front of a fastener. After the needle is withdrawn, only the needle handle is required to be pulled back into the anti-pricking sheath, and the problem that the needle with blood accidentally pricks others to cause infection can be avoided, so that protection to medical staff is strengthened.

A prepared kit according to the invention includes a plurality of pre-cut tape strips for securing a medical device such as a catheter, an intravenous needle, tubing, or a similar device to a patient's skin or to a support. Once a medical attendant has inserted a medical device into a patient's skin at an insertion site, the attendant secures the medical device to the patient's skin or to a support at a point spaced from the insertion site by engaging the medical device with a portion of each of the strips. Each of the strips has a biocompatible adhesive on one surface and a non-adhesive portion on the opposite surface, such that medical personnel are able to rapidly and effectively secure the medical device when putting the device into use. The kit can further include the following: a sterilized pad to provide protective padding for the patient's skin; an alcohol wipe for sterilizing the patient's skin prior to inserting the medical device; and a medical device such as an intravenous needle. Each tape strip can have a layer of peelable release paper adhering to the adhesive surface of the tape strip. One end of the layer of peelable release paper extends beyond an edge of the adhesive surface of the tape strip creating a tab. The tab allows a medical attendant to quickly and easily remove the release paper and place the tape strip to secure the medical device without having to remove protective plastic gloves, place the tape strips on an unsterilized surface, or employ scissors and a tape roll.

The invention provides a safe intravenous needle assembling machine, and belongs to the technical field of medical apparatuses and instruments. The safe intravenous needle assembling machine solves the problems that an existing assembling machine is incomplete in assembling and not high in yield of finished products. The assembling machine comprises a machine frame, and is characterized in that two carrier circulation conveying lines are arranged on the machine frame in parallel and include the sliding sleeve carrier conveying line and the outer shell carrier conveying line; the sliding sleeve carrier conveying line is sequentially provided with a safe sliding sleeve feeding mechanism for feeding corresponding assemblies to an assembling station and a needle base feeding and assembling mechanism in the conveying direction; the outer shell carrier conveying line is sequentially provided with an outer shell feeding mechanism, an outer shell and sliding sleeve assembling mechanism, a needle base glue adding fixing mechanism, a needle feeding and dispensing mechanism, a glue curing device, a needle tip silicification mechanism, a needle sleeve assembling mechanism and a finished product discharging mechanism in the conveying direction; and the outer shell and sliding sleeve assembling mechanism is located between the sliding sleeve carrier conveying line and the outer shell carrier conveying line and located behind the needle base feeding and assembling mechanism of the sliding sleeve carrier conveying line in the conveying direction. According to the safe intravenous needle assembling machine, assembling of the accessories in a safe intravenous needle can be successfully achieved; the accessories are subject to staggered and repeated receiving, so that the production efficiency can be greatly improved; and a plurality of inspection items are additionally carried out in the assembling process, and inferior-quality product screening is carried out on the accessories and middle assemblies in an all-around manner, so that discharging of inferior-quality products is reduced, and the yield of the finished products is improved.

An application for a light source for killing blood pathogens. The light source includes multiple ultraviolet light emitting diodes and a visible-spectrum light emitting diode. A light mixer combines light from the ultraviolet light emitting diodes and the visible-spectrum light emitting diode and focuses a mixed light into a fiber optic for delivery to an intravenous needle. A controller adjusts an amount of current delivered to the ultraviolet light emitting diodes and visible-spectrum light emitting diode. A touch screen is interfaced to the controller for inputting commands and a display is interfaced to the controller for outputting information.

Drug formulations having reduced abuse potential which contain one or more of (1) a bittering agent, (2) a bright deterrent / indicator dye and (3) fine insoluble particulate matter. The bittering agent and dye are in a form which does not affect proper administration of the drug, but the bittering agent creates a bitter side effect when the dosage form is crushed or chemically extracted and nasally, orally, buccally or sublingually administered and the dye produces a bright color when crushed and contacted. The fine insoluble particulate matter hinders extraction of the drug from the dosage form and, when crushed, can deter intravenous injection because of the presence of the insoluble particles or hinder injection by blocking an intravenous needle. The bright color of the dye, when extracted, also has a psychologically deterrent effect on intravenous abusers.

The present invention is directed to a coupler for providing fluid connection between a needle holder and an intravenous needle assembly. The coupler includes a coupler housing and a coupler needle cannula. The coupler housing includes a forward end and a rearward end with the forward end having a piercable septum. The coupler housing also includes at least one lug on its external surface. The coupler is capable of forming a blood collection assembly to provide for fluid connection between a conventional needle holder and an intravenous needle assembly which includes guide slots traditionally provided for engagement with lugs on specific specimen tube arrangements.

The invention relates to an automatic infusion set based on a multi-pass structure. The infusion system comprises an intravenous needle, a protective cap, a dosing plug and a liquid medicine monitoring control box, wherein the liquid medicine monitoring control box comprises a liquid level monitor, a flow velocity monitor, a multi-pass conversion device, a flow velocity controller and a central processing unit; the intravenous needle, the dosing plug, the liquid medicine monitoring control box, and an infusion bottle or an infusion bag are connected through infusion hoses; a button is arranged on the liquid medicine monitoring control box and is used for presetting the flow velocity of the liquid medicine; the central processing unit receives monitoring signals of the liquid level monitor and the flow velocity monitor and controls the rotary multi-pass and flow velocity controller to gate the liquid medicine and control the flow velocity. According to the infusion set disclosed by the invention, intravenous injection of multi-bottle or infusion bag medicines can be performed at a time, the injection process is completely automatic, the workload of nurse clinicians is greatly reduced, automatic alarm reminding can be given to a corresponding mobile terminal when infusion is completed or an emergency situation occurs, and the safety and the reliability of the infusion process are ensured.

The invention discloses a disposable transfusion needle, which comprises a needle tube and a needle hole at its end, and at least one needle hole is arranged on the side wall of the needle tube. The disposable infusion needle is provided with a position-limiting structure that limits the movement of the infusion needle relative to its connection object, such as an injection piece; the position-limiting structure is a structure that has line contact or surface contact with the connection object. The side hole needle tube of the disposable infusion needle of the present invention can solve the problem of puncture debris falling. The movement limit device of the disposable infusion needle reduces the breaking force of the needle tube when the patient's limb moves or the infusion device moves, so that the needle tube will not break.

The invention belongs to the field of production of medical apparatus, and particularly relates to a single-wing intravenous needle assembling machine. The single-wing intravenous needle assembling machine comprises a wing charging device (1) for positioning a wing into a carrier (13); starting with the wing charging device (1), a needle charging assembly (2) is connected to a conveyor belt at the back of the wing charging device (1); a right-angle conveying assembly (3) is connected to a conveyor belt at the back of the needle charging device (2); an oven (4) is connected to a conveyor belt at the back of the right-angle conveying assembly (3); a return needle detecting assembly (5) is connected to a conveyor belt at the back of the oven (4); a first air testing device (7) is connected to a conveyor belt at the back of the return needle detecting assembly (5); a carrier reversing device (6) is arranged at the back of the first air testing device (7). With the adoption of the single-wing intravenous needle assembling machine, a single-wing intravenous needle is hardly attached with bacteria during being assembled, so that the safety is high; in addition, the single-wing intravenous needle assembling machine is high in automation degree, so that the assembling efficiency can be greatly improved, and mass production can be achieved; the whole design of the single-wing intravenous needle assembling machine is reasonable, and the structure is simple.

The invention provides an intravenous needle tab feeding mechanism, comprising a shank main plate for conveying intravenous needle tabs, a push assembly for pushing intravenous needle tabs, a feeding base for rotationally guiding intravenous needle tabs, a guide device for conveying intravenous needle tabs downwardly, and an intravenous needle jig for receiving intravenous needle tabs conveyed down from the guide device; the push assembly can convey the intravenous needle tabs into the feeding base that are conveyed from the shank main plate to the bottom end of the shank main plate, and the intravenous needle tabs in the feeding base are conveyed down into the intravenous needle jig through the guide device. It can be effectively guaranteed that intravenous needle tabs are conveyed neatly, precisely and efficiently; the shank main plate and a groove I thereof are inclined, the feed base can provide rotational guide control, and therefore, a travel distance for conveying intravenous needle tabs is effectively shortened and whole space required by the intravenous needle tab feeding mechanism is effectively reduced.

The invention discloses a rotary shifting device of a safe intravenous needle base. The rotary shifting device comprises a frame bracket, a translation unit including two translation modules symmetrically arranged on the left and right two sides of the upper end surface of the frame bracket, a lifting unit including two sets of lifting modules symmetrically arranged on the left and right two sides of the frame bracket and mounted on translation slide plates fixed on the translation modules, a turnover fixed plate connected with the lifting modules by one end, and a rotating unit including a rotating module, wherein the two ends of the rotating module are respectively connected with the other end of the turnover fixed plate through a left support plate and a right support plate. The rotary shifting device, provided by the invention, synchronously clamps medical fittings in discharge ports through clamping modules, synchronously feeds the medical fittings into next stations through lifting units and through synchronous turnover of rotating modules, guarantees the same direction of all medical fittings in each shifting, saves the subsequent assembly time, and improves the productivity.

The invention relates to a garbage bin for medical treatment, in particular to a convenient needle-bending type garbage bin for medical treatment. A technical problem required to solve is as follows:providing the convenient needle-bending type garbage bin for medical treatment, which can bend and wind an intravenous needle or an injection needle on a disposable infusion device, and can prevent pathogens from spreading. According to the technical scheme, the convenient needle-bending type garbage bin for medical treatment comprises a box body, a first large connection block, a cover body, a second large connection block, a pallet and the like; and the upper end of the right side wall of the box body is connected with the first large connection block, and the cover body is located directlyabove the box body. The convenient needle-bending type garbage bin for medical treatment can cut the intravenous needle or the injection needle on the disposable infusion device out of the infusion tube, bend and wind the intravenous needle or the injection needle on the disposable infusion device, and avoid puncturing a garbage bag inside the garbage bin.

A blood collection set including a non-patient needle assembly interconnected with an intravenous needle assembly through tubing is provided. The non-patient needle assembly includes a hub assembly adapted for mounting with a blood collection set, and an internal blunting member including a blunted tip. The non-patient needle assembly further includes an external cannula concentric with the internal blunting member and including a non-patient puncture tip adjacent the blunted tip. The external cannula is axially displaceable with respect to the hub assembly between a first retracted position in which the non-patient puncture tip extends beyond the blunted tip and a second activated position in which blunted tip extends beyond the non-patient puncture tip.

The invention discloses a bubble-free transfusion system, which comprises a bottle stopper puncture outfit, an air filter, a drip hopper, a flow regulator, a disposable intravenous needle and the like and is characterized in that an anti-bubble liquid dropping device consists of a dropper body, a dropper body holder and a dropper body connecting conduit. In the normal transfusion process, the anti-bubble liquid dropping device makes the pressure in the drip hopper and the external air pressure reach a critical balance state, and simultaneously, height differential pressure is formed between a liquid inlet hole on the dropper body and the top end of a liquid inlet needle, so gas and liquid can not flow out simultaneously, which ensures that no bubble exists in the transfusion process. The invention has the following advantages: 1 the bubble removing performance is stabler; 2 the drip hopper does not need to be extruded in the use process; 3 the entire transfusion operation step is simple without any additional steps; 4 no liquid medicine is left in the drip hopper when transfusion is ended; and 5 the bubble-free transfusion system is very favorable for rapid transfusion in an emergency state and strives for time for rescuing serious patients.

The invention discloses a feeding mechanism for a safe intravenous needle seat. The feeding mechanism comprises a dislocation discharging device, a rotary material moving device, a horizontal direction-adjusting device, a CCD testing device and a rotary direction-adjusting device, wherein the dislocation discharging device, the rotary material moving device, the horizontal direction-adjusting device, the CCD testing device and the rotary direction-adjusting device are sequentially arranged on an assembly line used for feeding of the needle seat, and a direction-adjusting unit comprises an electric cylinder baseboard, an electric cylinder, a first sliding assembly and a thrust-stopping unit. One end of the electric cylinder is embedded on the electric cylinder baseboard, and an electric motor is arranged on the other end of the electric cylinder; one side of the first sliding assembly is arranged on a slide track of the electric cylinder, and a swing unit is connected with the other side of the first sliding assembly; and the thrust-stopping unit is arranged on the swing unit. According to the feeding mechanism for the safe intravenous needle seat, the horizontal direction-adjusting device can drive a follower mounting board of the swing unit to move through the thrust-stopping unit, and further a rotary shaft connected with swing blocks in a nested mode is driven through swing blocks arranged on the follower mounting board, and thus, the direction of the needle seat is synchronously changed.

The invention provides an intravenous needle wing panel feeding device. The intravenous needle wing panel feeding device comprises a needle handle main plate which is used for conveying an intravenous needle wing panel, a material pushing assembly which is used for pushing the intravenous needle wing panel and a feeding seat which is used for rotating, guiding and conveying the intravenous needle wing panel; the material pushing assembly can push the intravenous needle wing panel which is conveyed to the bottom end of the needle handle main plate along the needle handle main plate to leave the needle handle main plate; the feeding seat is used for receiving the intravenous needle wing panel which is conveyed downwards from the needle handle main plate; a plurality of grooves I which are used for conveying intravenous needle wing panels are formed in the needle handle main plate; a first ejector pin and a second ejector pin are arranged at the bottom end of each groove I side by side. Due to the adoption of the technical scheme, the material pushing assembly and two groups of ejector pins which are arranged at the bottom end of the needle handle main plate are matched mutually to work, so that the phenomenon that quite a few intravenous needle wing panels stay in the grooves I of the needle handle main plate caused by the factors that the self weight of each intravenous needle wing panel is light and the like is avoided; clean, accurate and high-efficiency conveying of the intravenous needle wing panels are effectively ensured.

The invention provides a dual-valve purification vein infusion device provided with a filtering elastic valve and an elastic buoyant valve. An upper infusion tube is arranged on the outer upper end of the outer housing of a drip cup, a puncture needle is arranged on the upper end of the upper infusion tube, an elastic valve cylinder connected to an elastic valve base is arranged in the outer housing of the drip cup, a dripping tube observing infusion speed is arranged on the inner upper end of the elastic valve cylinder, the elastic valve base is arranged on the upper middle portion of the elastic valve cylinder, an elastic valve liquid inlet hole is formed in the middle part of the elastic valve base, and a cone gear-shaped elastic valve is arranged on the lower end of the elastic valve liquid inlet hole. The elastic valve base, a cross base and the elastic valve cylinder are cast integrally to form an elastic filtering and purification combination, the elastic filtering and purification combination is fixedly arranged in the drip cup and fixed integrally with the drip cup, and a lower infusion tube is arranged on the lower end of the drip cup. When the vein infusion device is used, a seal film is uncovered, and a scalp intravenous needle is connected to and arranged on the inner end of an infusion connector with screw threads, so that infusion is achieved.

The invention provides a process for assembling a safe intravenous needle, and belongs to the technical field of medical devices. The process comprises the following steps: step I, feeding a safe sliding sleeve; step II, feeding and assembling a needle seat; step III, feeding a shell; step IV: assembling the shell and the sliding sleeve; step V: adding adhesive on the needle seat for fixing; step VI: feeding a needle and dispensing adhesive; step VII: curing the adhesive; step VIII: siliconizing the tip of the needle; step IX: assembling a needle guard; step X: discharging a finished product. Compared with the prior art, the process provided by the invention can successfully assemble parts of the safe intravenous needle; through multiple times of material receiving of the parts in a staggered manner, the production efficiency can be greatly improved; a plurality of test items are added in the assembling process, and comprehensive defective screening is conducted on the parts and intermediate assemblies, so that discharging of defective products is reduced, and the finished product yield is improved.

The invention relates to an injection pump pumpback method. The method is completed by controlling a computer system through computer program instructions by building a function module framework, and the computer program instructions are stored into a computer readable storage medium. According to current pressure intensity inside a pipe of an injector to be tested and the length of a hose for connecting the injector to be tested with an intravenous needle, the pumpback amount is calculated, when the injector is blocked, the influence caused by the length of the hose is sufficiently considered when the pumpback amount is calculated, and the pumpback amount is calculated more accurately, so that the pressure intensity of the hose and the injector are accurately released, and the problem that the relations between pressure sensor input values and the pressure intensity inside the hose and the injector are different on the two conditions that a push rod pushes an injection handle and the push rod pulls the injection handle is solved. In addition, in order to ensure that the pressure intensity inside the injector can be more accurately released during pumpback, and a processor calculates the pumpback compensation amount according to displacement of the injector, and controls the injection pump to perform pumpback compensation on the basis of the compensation amount.

The invention relates to apparatus for conveniently fixing the vein in non-invasive puncture. The apparatus comprises a shell, a display screen, a sensor chip, a near-infrared light processor, and bandages, wherein the shell is of a left-half-turning n-shaped structure, the shell comprises an upper shell and a lower shell, the display screen is arranged at the middle position of the upper surfaceof the upper shell, the near-infrared light processor is arranged at the middle position above the display screen, the sensor chip is arranged below the display screen, a power switch is arranged on one side of the sensor chip, the lower shell is provided with a puncture through hole, the bandages are fixedly arranged on two sides of the lower shell, and bandage surfaces on two sides are providedwith matching Velcro. The advantages of the apparatus are as follows: the apparatus uses bandage compression and is combined with the visual operation screen to perform venous puncture on a patient, and mainly uses the screen or the development on the skin to guide a doctor and nurse to confirm the position, depth and direction of the vein, and at the same time the bandages can help to fix a venous blood vessel at a puncture site, so that infusion only once is facilitated, and the repeated needle insertion is avoided.

The invention discloses an assembly technology of a split type medical intravenous needle, and belongs to the technical field of medical equipment. The assembly technology resolves the technical problems that in the prior art, assembly of products is low in quality, efficiency and the like. The split type medical intravenous needle comprises a double-vane needle base, a steel needle and a protective sleeve, wherein the double-vane needle base is of a split structure and comprises a vane portion and a needle inserting tube portion. The assembly technology comprises the following working procedures of A assembly of the double-vane needle base, B assembly of the steel needle, C gluing, D gluing drying, E assembly of the protective sleeve and F discharging. The assembly technology has the advantages of being good in assembly quality, high in production efficiency and the like.

A device (10) is provided for facilitating insertion of a needle or a cannula into a vein of a patient. The device comprises a fluid chamber (23) adapted to be held in operable engagement with a surface of the patient's skin by a fastener (30 / 34 / 35) that extends about a limb of the patient. The device is adapted to create a volume of reduced pressure within the fluid chamber, so as to facilitate expansion of an underlying part of the vein. The device enables insertion of a needle or cannula into the expanded part of the vein, whilst the fluid chamber remains operably engaged with the surface of a patient's skin.