3. PREAMBLE TO THE DESCRIPTION

COMPLETE

This invention is an alternate of advance Intravenous Infusion Control System. The device is inexpensive and keeps track on the flow while infusion and gives alarm after the fixed level or before the bottle gets empty and can chock the flow at that time to prevent excess infusion of fluid or back flow of blood into the tube of infusion system. It has an advantage that it can be used by different patient without sterilization.
Advance hospitals are using the advance Intravenous Control System that regulates the flow of external fluid during infusion. This advanced device allows the infusion with defined rate and also minimizes the risk of backflow of blood into the infusion tube due to blood pressure. But problem is that, most of the hospitals and nursing homes are not utilizing this kind of high expensive and complicated device. For the process of infusion most of the hospitals and nursing homes hang the fluid bottle on the stand and connect the infusion tube from the bottle to the body. One manual control option controls the rate of fluid. So, there is always a risk of excess infusion and backflow of blood.

4. DESCRIPTION (Description shall start from next page.)

The above specified problems can be overcome by the present invention, which provides inexpensive alarm and chock system for the intravenous infusion process. The device comprising of three parts, first one is the sensing part of the system and it is disposable, second is circuitry and third is the mechanical part driven by the second part.

The first part contains two concentric hollow and hard polymer (plastic) tubes having one metal cap at the end of each tube. This part has to be inserted inside the bottle of the fluid along with the terminal part of the infusion tube. The length of the concentric tubes differs; the outer one is very short in comparison to the inner one. The inner one can easily slide over the outer one. At the time of infusion if there is requirement of level setting then it can be done with the help of inner longer tube.
The output of sensor part is given to the second part which contains the circuitry. When both the metal cap of part-1 remains in contact with fluid, it will not activate the relay for buzzing the alarm and actuating the motor. As the fluid leaves the contact from the metal cap of long polymer tube, it will activate the relay and then relay will activate the mechanical part i.e., alarm and motor.
The third part contains mechanical adjustment of motor and clip. They both together perform the action of chocking. For the action, any part of infusion tube has to be placed inside the open tip of clip. Relay actuates the motor which produces a displacement of hook and finally closes the clip. As clip mouth gets closed, it will stop the flow and also cut the power supply of motor that saves power also, where alarm functioning is optional. Alarm comes with a separate on/off key.
The level setting for the fluid infusion i.e., the fixing of the amount of fluid for the infusion is done manually with the help of the first part.
In one form of device the first part i.e., sensor part can be designed separately as described earlier.
In another form, the sensor can be incorporated with the insertion terminal of infusion tube.
In one form, the opening of clip mouth is done manually. Manual operation makes it more cost-effective.
In another form it can be done automatically which provides more comfort.
The first part is disposable .This is the only part which comes into contact of fluid. So, one can change this for different fluid and also for different patient. Therefore, sterilization of device is not required.
The second and third part can be attached with the same stand where fluid bottle is hanged. It runs with 5 to 6V DC battery or AC to DC adapter (6V).

To assist with the understanding of the invention, illustration and details will be made using drawing for reference, which shows one representation of the invention.

BRIEF DESCRIPTION OF DRAWING
FIG. 1 shows schematic representation of the sensor arrangement (first part)
FIG. 2 shows the arrangement of the circuitry component (second part)

FIG. 3 shows the arrangement of the clip and motor (third part)
FIG. 4 shows the overall working application of the device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIG. 1 can be seen that the first part of the alarm and chock system contains a long polymer hollow pipe 1 of diameter < 1/4 inch and the length more than 4 inch. Both of its ends are closed. The upper end is pointed 2, which help in insertion of this part inside the bottle. Just below the tip 2, there is small metal cap 3. This metal cap is connected to the wire 4 which passes through the inside of hollow pipe 1. There is another short hollow pipe 5 just outside the hollow pipe 1. There is no gap between pipes 1 and 5 that prevents leakage of fluid but pipe 1 can easily slide on pipe 5. The upper tip of pipe 5 is also with a metal cap 6. This metal cap 6 is externally attached by a conducting wire 7 to the output-I 8. The wire 4 is connected to the output-II 9. The pipe 1 also contains a holding part 10 for holding it from the outside. There is a barrier 11 on the pipe 5. When this is inserted inside the bottle, barrier 11 stops the entire first part at certain level. This prevents excess insertion of sensor inside bottle. After inserting the first part into fluid bottle, one can easily move the tube 1 with the help of holding part 10 to adjust the level where the device has to buzz the alarm and chock the flow.

FIG. 2 shows the basic idea of second part of alarm and chock system. It contains the circuitry part of the system. The basic part of circuitry is a transistor 12 which receives the signal from the output 8 and 9 and then send it to the NOT gate 13. The output of NOT gate 13 is connected to the Relay 14. This relay actuates the alarm 15 and motor 16. When both the output terminal 8 and 9 remain in contact to the fluid it sends the signal to NOT Gate 13 then the output of NOT Gate 13 remain zero but if one output terminal 8 leaves the fluid then NOT Gate 13 gives signal to the relay 14 for actuating the motor 15.
FIG. 3 shows one example of motor and clip arrangement. The motor 16 contains a metal nail 17. The nail 17 is perpendicular to the motor 16 axis and it is fixed with the help of a screw 18. A plastic frame 19 is placed perpendicularly to the motor 16 axis. The frame 19 holds the clip 20. In this FIG. 3 clip 20 is in closed condition. There is a hook 21 which performs the holding action of the clip 20 in open condition. Hook 21 contains an extension 22. During open condition, the tube of infusion system is placed at the terminal position 23 of the open clip 20. At this time clip 20 is kept in open condition with the help of the hook 21. Relay 14 activates the motor 16 and nail 17 displaces the extension 22 of hook 21 that results into closing of the clip 20. Thus, closing chocks the tube of infusion system and stops the flow.

FIG. 4 shows the overall arrangement of the alarm and chock system on the stand 24. The second and third part is clamped with a clamp 25 and 28 on the stand 24 respectively. This figure explains the working arrangement of the system. One terminal of infusion tube 26 is inserted into the bottle 27. At the adjacent position of this insertion the first part of the system is also inserted. The last end of infusion tube 26 contains the needle that has to be inserted in the body for infusion. The tube 26 is placed at the open end of clip 20.

5. CLAIMS (not applicable for provisional specification. Claims should start with the preamble -- "I/We Claim" on separate page)

We claim:

1. An inexpensive alarm and chock system for intravenous infusion process comprising a disposable sensing system, reusable circuitry part and mechanical part.

2. The device as claimed in claim 1 where in the disposable sensor can be designed in any suitable way and it contains two metal cap and these two metal caps send signal for overall operation.

3. The device as claimed in claim 2 where in the sensor can be made separately or one can incorporate it with the insertion terminal of infusion tubing.

4. The alarm and chock system of claim 1 contains the most basic circuitry which contains only transistor, NOT gate, a relay, alarm and power supply.

5. The device of claim 1 has a mechanical part comprising of a motor and a clip. The arrangement of these two parts may vary.

6. The device as claimed in claim 1 where in the circuitry part and the mechanical part can be separate or in one box.

7. An inexpensive alarm and chock system for intravenous infusion process substantially as here in described and illustrated in in the figures of reference.