This invention relates to a I.V. Catheter and, in particular, to a Safety I.V.
Catheter with a Rotator and Inbuilt Plug to Prevent Blood Back Flow. In
particular, the Safety intravenous catheter device for the invention has been so
designed to prevent back flow of blood after cannulation at the time of withdrawal
of the needle.
BACKGROUND ART
It is well known that when cannulation is done i.e. when needle is inserted in the
vein of a patient, blood comes out into the plastic tubing in which the needle is
fitted. The purpose of cannulation is to leave the plastic tubing inside the vein and
the needle is withdrawn and disposed off. In this process, blood rushes into the
tube and body of the I.V. Catheter and even comes out.
To prevent this, paramedical staff presses the vein to avoid rush of blood. This
method is too primitive, uncertain and ineffective in many cases.
OBJECTS OF THE INVENTION
The purpose of this invention is to provide a Safety I.V. Catheter which would by
manual operation control and prevent such rush of blood after cannulation and be
a Safety I.V. Catheter as well.
SUMMARY OF THE INVENTION
Thus according to the basic aspect of the present invention there is provided an
intravenous (I.V.) Catheter (with a Rotator and Inbuilt Plug to Prevent Blood
Back Flow)

The I.V. Catheter comprises of a body, a needle hub capable of holding the needle
in a manner that the non sharp end of the needle is fitted inside the needle hub and
sharp end is used for cannulation. The body of the I.V. Catheter is fitted with a
rotator in a shape of a tap with a rubber plug fitted inside the rotator. The needle
punches the rubber plug and makes way to pass through.
The details of the invention, its objects and advantages are explained hereunder in
greater detail in relation to non-limiting exemplary illustration as per the
following accompanying figures:
BRIEF DESCRIPTION OF THE ACCOMPANYING FIGURES
Figure 1 illustrates an embodiment of the intravenous (I.V.) Catheter with rotator
Figure 2 is the complete intravenous (I.V.) Catheter wherein the individual parts
have been numbered as below:
1. Portion marked as 1 is plastic tubing.
2. Portion marked as 2 is body of the I.V. Catheter.
3. Portion marked as 3 is needle.
4. Portion marked as 4 is rotator.
5. Portion marked as 5 is needle hub.
6. Portion marked as 6 is rubber plug.
7. Portion marked as 7 is the rotator holder.
8. Portion marked as 8 is hub cover.
9. Portion marked as 9 a leur lock.

10. Portion marked as 10 is a cap to close the injection portion given in the
rotator.
11. Portion marked as 11 is tip protective housing.
12. Portion marked as 12 is needle cover.
Figure 3 is an illustration of rotator with rubber plug.
Figure 4 is an illustration of close up of rotator fitted with rubber plug having
Figure 4(A) depicting the holes on the lower portion of rotator holder. Figure 4(B)
depicts the plastic tunnel fitted inside the rubber plug. Figure 4(C) depicts the
indicator on the top of the rotator plug.
Figure 5 is illustration of tip protection housing which is the Safety feature.
Figure 6 is illustration of the rubber plug.
Figure 7 is illustration of needle withdrawn and rotator plug moved clockwise and
anti clockwise to close the holes on the lower body of the rotator, simultaneously,
the needle tip is locked in the tip protector housing making convenient disposal.
Figure 8 is the figure which shows the needle passing through the rubber plug by
puncturing the rubber and then going into the plastic tubing. The rubber plug is
fitted inside the rotator. The tip also passes through the tip protective housing
which is the Safety Feature.
Figure 9 is illustration of rotator.

The rotator has a cylindrical body and a rubber plug in the hollow. The lower
portion has a tunnel by way of plastic tubing fitted inside the rubber plug.
Reference is first invited to accompanying figure 1, which shows the intravenous
I.V. Catheter device in accordance with the present invention wherein the product
I.V. Catheter has a rotator with inbuilt plug (not shown).
The method of application and use of the above safety intravenous (I.V.) Catheter
of the invention is further detailed hereunder:-
In use of the catheter device, initially the site of the catheter insertion on the
patient's body is cleaned using alcohol wipes. Thereafter, the skin is punctured by
using the needle tip which is inside a thin plastic tube. The needle tip is moved
forward to puncture the vein. Immediately blood flash back is noticed in the blood
collection chamber.
In the present invention, the blood is unable to come out fi"om the body and
spillage is avoided. This is an added safety feature making the user safe fi-om the
blood of the patient. Now, the fluid is administered. The fluid is administered
through the body of the cannula. The needle is passing through the punctured hole
made in the rubber stopper. The needle punctures the rubber stopper and make its
way through the plastic tubing. When the needle is pulled out after cannulation,
the pimctured hole is corresponding to the diameter of the needle. Due to the
elastic nature of the rubber, the stopper closes the hole created forcefiilly by the
needle. This prevents the back flow of the blood.

The rubber stopper is fitted in the hollow part of the body of the rotator. The
rotator is to be rotated in clockwise/ anti clockwise direction. The purpose is to
bring in line, the holes in the lower portion of the rotator body with the opening in
the body of the cannula making passage for infusion. In such a case, the plastic
tunnel fitted inside the plug comes in symmetry to the hole making passage for
infusion of tunnels. After infusion, the tap is again manipulated to close the holes
by disturbing the alignment with the holes and the opening i.e. rubber stopper
comes in front of the opening.
It is now relevant to highlight the safety feature of the invention. Subsequently,
the needle withdrawing action is initiated by withdrawing the needle out from the
cannula and leaving the plastic tubing inside the body. The butterfly portion of the
catheter remains outside for giving medication. In this process, the needle passes
through the insert and its tip gets locked in the Locking Insert. In this position, the
needle run its full length between the Locking Insert and the needle hub. The
needle tip then gets locked inside the Locking Insert by means of stainless steel
clip. The needle tip is locked in the manner that the tip cannot come out of the
bend of the stainless steel clip.
As would be apparent from the above, the intravenous (I.V.) safety catheter thus
achieves the locking of the needle tip within the Locking Insert free of any
exposure to avoid needle stick injury and / or any spread of hospital acquired
infection by way of unwanted needle contamination. Finally, by way of the above
safe and convenient locking of the needle within Locking Insert of the catheter

system of the invention, it is possible to safely discard the needle with Locking
Insert in the sharp container.
Advantageously, the above (I.V.) Catheter is adapted to function as a safe device
to protect the user against needle stick injuries. The above safety catheter device
involving the Locking Insert can be manufactured out of simple materials
including polypropylene, low density polyethylene, stainless steel, acronytrle
butadiene styrene, silicon rubber, Floropolymer/ Polyurathene.
The Locking Insert, needle hub, flash back, needle hub are made of
polypropylene. The needle and clip are made of stainless steel and pot cap is
made of low density polyethylene.
The one way valve can be obtained of silicon tube and adapted to facilitate extra
medication and prevent back flow. The valve is specifically adapted to incorporate
a recessed plug with protective skirt to effectively prevent contamination when the
valve is not in use. Advantageously also pot cap is adapted for resting the finger to
facilitate effective two-point grip for cannulation. The system offers safe and
convenient needle less method for atraumatic administration of medicines.
Moreover, it is possible to provide colour coded pot cap for gauge size
identification. Angled and groove wings can be provided to offer easy fixation and
prevent positioning and rolling of cannula over the patient's body. The catheter
device so introduced to this invention is user friendly and provide a safe and
simple catheter device for doctors and paramedical staff.

WE CLAIM:
1. An intravenous (I.V.) Catheter device with retractable needle comprising:
An inbuilt device to prevent blood back flow and where the body of the I.V.
Catheter is fitted with a rotator in a shape of a tap with a rubber plug fitted inside
the rotator and the needle punches the rubber plug and makes way to pass through
and after cannulation the needle is withdrawn and elastic nature of the rubber plug
blocks the punctured hole and the rotator is to be rotated in clockwise/ anti
clockwise direction to bring in line the holes in the lower portion of the rotator
body with the opening in the body of the catheter making passage for infusion and
after infiision, the tap is manipulated to close the holes and where a needle
different from others where a forming is provided at a distance from the tip, where
the Locking Insert slides to the butterfly portion and the needle runs its length
between the Locking Insert and the butterfly portion and the needle tip forming
gets locked in the Locking Insert by means of a stainless steel clip provided inside
the Tip Locking Insert and the Tip Locking Insert comes out of the butterfly
portion fixed on the needle tip.
2. An intravenous (I.V.) Catheter device as claimed in claim 1 wherein the I.V.
Catheter has a tap with a hollow place for a rubber plug.
3. An intravenous (I.V.) catheter as claimed in claim 1 wherein the body of the
tap has holes at the bottom.
4. An intravenous (I.V.) catheter as claimed in claim 1 wherein the rubber plug
has a plastic tunnel fitted inside the rubber plug.

5. An intravenous (I. V.) Catheter device as claimed in claim 1 wherein the needle
hub is accompanied with a Locking Insert.
6. An intravenous catheter as claimed in claim 1 wherein the Locking Insert is
fitted between the needle hub and the butterfly.
7. The intravenous (I.V.) catheter as claimed in claim 1 wherein Locking Insert
has a stainless strip.
9. An intravenous (I.V.) Catheter device with needle substantially as herein
described and illustrated with reference to the accompanying figures.

Dated this 3rd day of September 2008.

This invention relates to a medical safety intravenous (I.V.) catheter with retractable needle comprising an inbuilt device
to prevent blood back flow and the body of the I.V. Catheter is fitted with a rotator in a shape of a tap with a rubber plug
fitted inside the rotator and the needle punches the rubber plug and makes way to pass through and after cannulation the needle is withdrawn and elastic nature of the rubber plug
blocks the punctured hole and the rotator is to be rotated in a clockwise/ anti clockwise direction to bring in the holes in
the lower portion of the rotator body with the opening in the body of the catheter making passage for infusion and after infusion, the tap is manipulated to close the holes and the
needle tip forming gets locked in the locking insert.