SK33295A3 - Safety-operated multishot sidearm injection site using a needleless injector - Google Patents

Description

Technical field

The present invention relates to an injection device with a side-arm and multiple injection. Upon actuation of the needle-free injection device, pressure is exerted on the slider body to open the plunger, thereby allowing the drug solution to enter the main body inlet hose. Pressure loss or removal of the injection device will allow the plunger to close, preventing air from entering the intake hose. An important feature of the present invention is the fact that it prevents embolism that may be caused by the ingress of air into the inlet hose.

Background Art

In FIG. 1 shows a conventional injection needle connected to a dropper by a flexible rubber hose 10. The Y-shaped injection side is shown in FIG. 2, and includes a main hose

11. a minor hose 12 positioned at an angle to the hose 11. The minor hose is sealed with a rubber plug 12, the main hose being connected to the inlet hose at both ends. If the patient receiving the injection is to receive another drug solution, then the usual procedure is to bring the solution directly into the rubber hose 10 or the secondary hose 12, through the rubber plug 12, thereby avoiding further painful needle injection. The injection device used so far has the following disadvantages:

l. The nurse must hold the injection device in one hand and push the pointed needle into the rubber hose 10 or the rubber stopper 12 she is holding in one hand. This increases the likelihood that the nurse will prick the needle,

-29734, while increasing the likelihood of infection, especially if the wound has been in contact with the blood of an AIDS patient. For this reason, the existing injection facilities are not sufficiently safe, especially in the case of potentially endangering innocent people with accidental contact with AIDS.

2. Repeated puncturing of the rubber hose or rubber plug with the tip of the needle may result in small pieces of rubber entering the inlet hose and thus endangering the patient's health.

3. Miniature holes that have been formed in a rubber hose or plug by repeated needle puncture can cause air to penetrate the inlet hose and increase the risk of embolism.

SUMMARY OF THE INVENTION

It is a primary object of the present invention to provide a secure multiple injection injection device that uses a needle-free injection nozzle to deliver a drug solution to a delivery hose without injecting into the user's skin.

It is a further object of the present invention to provide a safe multiple injection injection device that uses a needle-free injection nozzle and which is capable of delivering a drug solution to a delivery hose through a plunger-operated injection hose. As a result, no part of the device is punctured, thereby preventing embolism with air that would otherwise enter the inlet hose.

Overview of the figures in the drawing

Fig. 1 is a schematic view of a prior art injection needle with a dropper.

Fig. 2 is a cross-sectional view of the Y-shaped injection device of FIG

The prior art.

Fig. 3 is an exploded perspective view of the present invention.

Fig. 4 shows a perspective view of an assembled device according to the invention.

Fig. 5 shows a cross-section of a device according to the invention

Fig. 6 shows a schematic view of an injection device according to the present invention associated with a dropper system.

Fig. 7 is a cross-sectional view of the apparatus of FIG. 5 associated with the dropper.

Fig. 8 shows, similar to FIG. 7, another embodiment of the present invention.

Examples of "fr ^^ - ^ * ^d * ^<jpvynálezu

According to FIG. 3, 4 and 5, the device of the present invention includes a dropper having a main body 21 extending from the side arm 22 and a slider body 23. The injection device is made of a pure technical thermoplastic of sufficient purity and strength to allow the flowing fluid to be observed, the slide body 23 being made of resilient silicone. The main body 21 has an inner tubular passage 211 extending through the body. It extends transversely through the opening 212 and communicates with the passage 211 of the main body 21 and is formed therein to accommodate a projecting side arm 22.

The protruding side arm is tubular in shape, has a closed end, and a conical passage (bore) 221. An inwardly extending valve stem 222. is disposed at the center of the closed end of the side arm 22 and has a tubular injection passage 223 through which the drug solution passes into the inlet hose. A pair of feet 224 are disposed at the periphery of the end of the side arm, and opposite the closed end.

-49734 is the present invention to the dropper using

The slider body is cylindrical and has such a shape that when the slider body 23 is positioned across the passageway 221, a space for flowing the drug solution is created.

As can be seen in FIG. 4 and 5, when mounting the device, a projecting side arm is inserted into and through the bore 212 of the main body 21 after the cylindrical slider body 23 has been disposed transversely in the main body 21. The closed end of the side arm 22 delimits the slider body with the injection port 223. it is sealed at its inner end.

As shown in FIG. 6, adapted to be coupled to the shut-off piercing device 30. wherein the filter 31 is connected to the quantity controller 31 and the supply tube 33 which extends from the filter. The lower end of the delivery tube is connected to the device 20 (where the subject of the present invention is located), and the other delivery tube 33 is connected to the injection needle at the end of the dropper.

As shown in FIG. 7, if another drug solution is to be added, a needle-free injection device 40 (which has removed the solution from the drug container) is used to deliver the solution to the dropper. The protruding end 41 of the injection device 40 is inserted into the passage 221 of the side arm 22 with the slider shaft inserted into the opening of the protruding end 41. Due to the conical shape of the passage 221, air can be expelled therefrom if the protruding end 41 of the injection is inserted. so that no air will be pumped into the delivery tube during injection of the drug solution, eliminating embolisms in the bloodstream of the patient.

If a device 40 is used to deliver the drug solution, the pressure will act on the slider body 23 which opens (squeezes) and allows the solution to flow into the inlet hose 33 through the tubular injection port 223. If the pressure is

When the device is gone or the device is removed, the depressed slider returns to its original shape and blocks the injection passageway 223 to prevent air ingress. Air cannot enter the interior, no matter how many times the device has been used. As shown in FIG. 8, the protruding end of the injection device 40 may be provided with a thread 42 that rigidly connects the device 40 to the beads 224 of the side arm 22 of the present disclosure.

Use of a needle-free injection device to deliver a drug solution to the patient's body protects the nursing staff from accidental needle injury.

2. The nursing staff shall be protected from infection which may arise as a result of puncture in the skin.

3. The use of a needle-free injection device avoids repeated punctures into the delivery hose, minimizing the risk of air entering the dropper, thereby causing embolism.

4. No rubber residues are formed due to frequent punctures into the rubber of the dropper tube or rubber stopper.

5. The injection device can be easily held in place by the additionally formed thread at the protruding end of the injection device, which is held by the feet on the protruding side arm.

Claims (11)

PATENT CLAIMS 2. A multi-injection side arm injection device comprising an injection nozzle and a dropper, the dropper having a main body with an axial bore extending through the body, passing at an angle greater than 0 ° and less than 180 ° to the axial bore to which it extends a hanger having an axial passage open at one end and terminating at the opposite end end, an injection hose at said opposite end that extends perpendicularly to said one end and an injection passage in the injection hose located between said axial passage and said end a slider body in the axial bore having a deformed and resting position, the slider body blocking the injection passage, and allowing flow in the deformed position when in the resting position of the solution if present where the slider body allows flow through the opening as in the deformed, as well as at rest, wherein, under pressure, the liquid flows through the injection port and causes the slider body to assume a deformed position, thereby allowing the solution to pass through the orifice. Device according to claim 2, characterized in that the slider body assumes a rest position when pressure is not applied. -Ί 9734 Device according to claim 2, characterized in that the slider body has a cylindrical shape. Device according to claim 4, characterized in that the slide body has a smaller diameter than the diameter of the passage in which the slide is located. Device according to claim 2, characterized in that the slider body is of silicone. 7. A multiple arm injection device comprising a needle-free injection nozzle and a dropper, wherein the dropper has a main body with an axial bore extending through the body, passing at an angle greater than 0 ° and less than 180 ° relative to the axial bore with it in conjunction, a side arm having an axial passage open at one end and ending at the opposite front end, an injection hose at said opposite end that extends perpendicular to said one end and an injection passage in the injection hose located between said through the axial passage and said end, the slider body in the axial bore having a deformed and rest position, wherein the slider body blocks the injection passage, and allows flow in the deformed position when in the rest position, the solution if located where the slider body allows the opening as in deformed as well as at rest flow through position, A 89734 needle-free injection nozzle having a receptacle adapted to hold a fluid and a protruding end having a fluid passage, the passage forming a connection between the receptacle and the injection passage, wherein said protruding end is complementary to said passage and injection tube, under pressure the liquid flows through the injection passage and causes the slider body to assume a deformed position, thereby allowing the solution to pass through the orifice. Device according to claim 7, characterized in that the slider body assumes a rest position when pressure is not applied. Device according to claim 7, characterized in that the slider body has a cylindrical shape. Device according to claim 7, characterized in that the slider body has a smaller diameter than the diameter of the passage in which the slider is located. Device according to claim 7, characterized in that the slider body is of silicone.