SPRING HYPODERMIC NEEDLE

Abstract

A needle that consists of two pieces, generally the second piece has two cylindrical parallel hollows; one hollow is much bigger than the other, the bigger hollow is for fluid entrance and the smaller hollow contains the first piece shaft; the first piece has a spring at the distal portion with an bicolored indicator for the movement of the first piece, and at the proximal portion it has a cylindrical shaft that moves forward and backward inside the smaller hollow of the second piece. When the hypodermic needle tip touches the skin or being inside a tissue the spring will be squeezed and the first piece will be situated backward in its primary position. Just when the tip of the needle enters any cavity or any vessel the spring will be freed and pushes the first piece forward with the change of the color of the bicolored indicator.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS

Not Applicable

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not Applicable

NAME OF THE INVENTOR

Rakan Elias Jamil Alhourani

STATEMENT REGARDING PRIOR DISCLOSURES BY THE INVENTOR OR A JOINT INVENTOR

Not Applicable

FIELD OF THE INVENTION

The present invention generally relates to a needle and a cannula that allow us to know immediately when the tip of the needle or the cannula just gets inside a cavity or a blood vessel.

BACKGROUND OF THE INVENTION

A spring hypodermic needle has many applications in medicine. When using an ordinary needle to get a blood sample from or to inject medication in a blood vessel, we enter blindly through skin and tissue to reach the vessel, so it is possible to get in and continue out of the vessel without even know that we pass through it, which unfortunately will rupture the vessel and make discomfort to the patient, so one application of the spring hypodermic needle that it prevents passing blindly through a vessel. Another application is with many emergency cases when we have a collapsed patient who needs immediate cannula insertion, and in those cases the blood vessels are collapsed and attenuated, which makes it difficult to get in, so the usage of the spring hypodermic needle and cannula will make it easier and quicker to get inside a vessel and save patient's life. Another application is in lumber puncture procedure, as is known to all we enter blindly using regular needles that may eventually induce injuries and serious complications to the spine, and with using the spring hypodermic needle we will know immediately when the needle just gets inside the spinal cavity, so we avoid and prevent serious complications.

SUMMARY OF THE INVENTION

The present invention is a needle with detecting reliable piece that moves forward by the force of a spring, when the tip of the needle just enters a lumen or a blood vessel or a cavity.

FIG. 1: The first piece.

FIG. 1A—The tip of the first piece; tip bevel direction: The first piece tip direction is almost perpendicular or is in an opposite direction to the needle tip (bevel) direction.

FIG. 1B—The shaft:—Different lengths

Very small diameter comparing to needle's (the second piece) diameter.

FIG. 1C—The spiral spring part; it pushes the whole first piece forward when the tip of the needle enters a cavity.

FIG. 1D—The bi-color indicator part: red/green

it is connected to the 3^rd part (the spiral spring part) and has two colors; green in the front and red in the back.

FIG. 2: The second piece.

FIG. 2A—The needle tip: Two holes—The smaller is for the first piece tip

The bigger is for fluid entrance.

FIG. 2B—The shaft:—Different lengths

Has two cylindrical hollows; bigger hollow for fluid entrance and the smaller hollow for the first piece shaft.

FIG. 2C—The spiral spring container: it contains the spiral spring part of the first piece.

FIG. 2D—The indicator part: it has a hole that shows the color inside (green or red).

FIG. 3—When the tip is inside a tissue:

FIG. 3A—The first piece tip is inside the needle tip (the second piece)

FIG. 3B—The spring is squeezed and the indicator shows the Green color.

FIG. 4—When the needle's tip just enters a cavity or a vessel:

FIG. 4A—The first piece tip moves forward by the force of the spiral spring so the first piece tip is displaced a little in front the level of the second piece tip, and that occurs just immediately upon entering any cavity or vessel.

FIG. 4B—The spring is freed and the indicator shows the Red color.

DETALED DISCRIPTION OF THE INVENTION

The spring hypodermic needle comprising two pieces: the first piece (FIG. 1) is the smaller piece that has four parts; bi-color indicator part (green and red) (FIG. 1D), spring part (FIG. 1C), shaft part (FIG. 1B) and tip part (FIG. 1A). The second piece (FIG. 2) is the larger piece that has two cylindrical parallel hollows; one hollow is much bigger than the other, the bigger hollow is for fluid entrance and passage, and the smaller hollow contains the first piece shaft, and in continuation with the smaller hollow is the spring container (FIG. 2C) that contains the spring part (FIG. 1C) of the small piece, and in continuation with the spring container is the indicator part (FIG. 2D) that has a hole to see the color inside. When the needle's tip is inside a body tissue (FIG. 3), the first piece tip will find resistance to move forward in relation to the second piece, so the tip of the first piece is at the level of the bevel / the tip of the needle and not in front of it (FIG. 3A), at the same time the spring of the first piece is squeezed (FIG. 3B) and just stands by in this position till the tip of the first piece is freed, and that happens when the tip of the needle enters a cavity or a lumen or a blood vessel. When the needle's tip is just entering any cavity or blood vessel (FIG. 4), there will be no more resistance against the first piece tip movement and accordingly no more resistance against the spring, so the spring will be freed and displace the hole first piece forward including the tip, shaft and the bi-color indicator part, so the tip of the first piece will be displaced forward (FIG. 4A); its level will be in front of the hole needle level and the color that is showing at the hole of the second piece's indicator part will change from green to red (FIG. 4B).

Claims

1. A needle that immediately detects its entrance in a cavity or a blood vessel, comprising two pieces: the first piece is the smaller piece that has four parts; bi-color indicator part, spring part, shaft part and tip part. The second piece is the larger piece that has two cylindrical parallel hollows; one hollow is much bigger than the other, the bigger hollow is for fluid entrance and passage, and the smaller hollow contains the first piece shaft, and in continuation with the smaller hollow is the spring container that contains the spring part of the small piece, and in continuation with the spring container is the indicator part that has a hole to see the color inside.

2. A needle as set forth in claim 1, with variable lengths and sizes of the first and second pieces.

3. A needle as set forth in claim 1, with variable relations between first and second pieces.

4. A needle as set forth in claim 1, with variable colors or shapes of the indicator part of the needle.

5. A cannula that immediately detects its entrance in a cavity or a blood vessel, comprising the first piece as set forth in claim 1 inside the trocar of the cannula in a design identical to claim 1 detecting system.