WO1994023784A1

WO1994023784A1 - Vascular catheterism device

Info

Publication number: WO1994023784A1
Application number: PCT/BR1994/000008
Authority: WO
Inventors: Chin Rong Hwang; Yin Lan Chien
Original assignee: Chin Rong Hwang; Yin Lan Chien
Priority date: 1993-04-15
Filing date: 1994-04-06
Publication date: 1994-10-27
Also published as: BR7301844U; AU6421894A

Abstract

A vascular catheterism device, characterized for having a needle protecting cover (1), a vascular catheter cannula (2) inserted in the body (7) of the device, having also in its upper portion a wing-like linear/vertical projection and having also in its interior a slanted channel (9), an elastic sealing stopper (11), a guiding puncture needle (3) and its hollow base (4), in its inner part (5) which indicates, visually, the filling with blood for its transparency and a pair of coupling grips on the sides of the hollow base (4).

Description

_ _

Vascular Catheterism Device.

Vascular catheterism means the introduction of a catheter (tube) into a blood vessel.

Such a device is related to an improved mechanism for the catheterism of blood vessel.

In the drawings which are attached hereto, Figure No. 1 represents:

05- a longitudinal section view of the device, with the numerals (1 to 1 1) indicating the respective components; a longitudinal section view of the device, with its components disconnected, with the respective identifying numerals (1 A to 11 A); top views of the device, with its components disconnected, and with the 10— respective identifying numerals (IB to 1 IB); cross section views of the device, with its identifying numerals (1C to 11C).

From Figure 1 it may be seen that:

1, 1A, IB and 1C indicate the protection cover of the vascular puncture needle and flexible catheter;

•1 5→ - 2, 2A, 2B and 2C indicate the hollow, flexible and resistant vascular catheter, made with an extremely thin wall. Such a catheter wrappes the puncture needle and is fixed to the device body;

3, 3A, 3B and 3C indicate the stainless steel, hollow vascular puncture needle, with beveled tip. This needle is enveloped by the flexible catheter. After the

20— puncture of the blood vessel the needle is removed, leaving the flexible catheter within the blood vessel, allowing the administration of the medicine;

4, 4A, 4B and 4C indicate the puncture needle supporting base, with 2 lateral grips to attach it, more securely, to the body of the device and shaped like a lever, for easy disconnection. It is hollow and connected to the hole of the

25— puncture needle, thereby allowing the flow υf the blood into its hollow chamber, upon "catching" the vessel. Its wall is transparent, allowing the visualization when the vessel is punctured, indicating that it has reached ("caught") the vessel;

5, 5A, 5B and 5C indicate the hollow region of the needle supporting base, where the blood which comes from the puncture needle is collected;

"³""" - 6, 6 A, 6B and 6C indicate the porous film which seals the back side of the needle supporting base. The porous film allows the exit of the air, but blocks the exit of the blood;

7, 7A, 7B and 7C indicate the body of the device. It is made of plastic of different colors. In its front tip there is the flexible and hollow catheter. In its

35- interior there are two channels:

The first is a longitudinal channel, where the puncture needle and the needle base are located - this channel communicates, in its front side, with the hole of the flexible catheter;

The other channel is a transversal one, which connects the longitudinal channel U — with the medicine administrating tube (indicated by 10). This part also shows a wing shaped projection, through which the device is held upon the puncture;

8, 8 A, 8B and 8C indicate the groove, on the back side of the device, where the guiding pro_jection of the n-ecdle supporting base attaches, so that the needle cannot rotate,

9 and 9A indicate the hollow transversal channel which communicates the longitudinal channel with the medicine administrating tube, 5- - 10 indicates the medicine administrating tube, connected to the transversal channel,

- 1 1, 1 1 A, 1 IB and 1 1C indicate the Elastic Stopper The stopper seals the longitudinal channel, on its back side This stopper is pierced through by the needle Upon the removal of the needle the stopper closes the hole made by the ^■ °"" needle, due to its elasticity, therefore blocking the passage of the blood

In practice, the catheteπzing process of the blood vessel is done as follows

First Remove the protecting cover,

Second Puncture the blood vessel with the needle tip, holding the device by its "wing" between the thumb and the index finger, 5- Third Upon punctunng the vessel the blood will flow into the needle and then to the hollow chamber of the -supporting base, as shown in the shadowed area in figure 2,

Fourth Remove the puncture needle pulling it from the back side of the device

(Figures 4 and 6) leaving the hollow catheter within the vessel As

2 — shown in figure 3, the hollow catheter will then communicate the intenor of the blood vessel with the longitudinal chamber, and this chamber with the transversal chamber, which is connected to the medicine administrating tube, as shown m Figure 5

At the end of the process the device is left attached to the skin by a piece of adhesive 25— tape, without the puncture needle

This device offers several advantages

A) It has a quite anatomic shape to puncture blood vessel, for it is sufficiently short to reach areas of difficult access, such as the bend of a man's elbow It has a wing-shaped projection which is easily held between the thumb and the index

3 - finger and this projection, when laid on the skin, it allows a good adhesion with the adhesive tape (Figures 7, 8 and 9),

B) The device shows the exact moment when the blood vessel is punctured, indicating that the vessel was "caught", filling with blood die hollow chamber of the needle base,

35— C) The porous film which seals the needle support base does not allow the leaking of the blood This is important, for it avoids the contact with the blood, which may be contaminated Therefore this is a totally clean device

D) The elastic stopper seals the back side of the device, even after the needle is removed,

^ u — E) The catheter left within die blood vessel is quite flexible and does not in_jure the vessel wall, and may remain in it for several days, even with abrupt movements by the patient It is a way to administer serum and medicine by excellence, for it is not necessary to constantly puncture the patient,

F) The medicine administrating tube is also flexible and easy to handle when it is 4 5 — necessary to change the serum or medicine It would be then sufficient to handle with the tube's nozzle (numeral 10), without touching the device itself,

G) The needle supporting base is also anatomic in shape, for easy disconnection from the device (Figures 3 and 4)

Claims

1. A VASCULAR CATHETERISM DEVICE, characterized for having a body (7) through which two hollow channels pass, a longitudinal one and a slanting one (9), with the longitudinal channel having inserted, on its nearest end, a vascular 5— catheter (2) and on its farther end the inlet of the guiding puncture needle. And the slanting channel connects the longitudinal one with the medicine and serum administrating tube (10).

2. A VASCULAR CATHETERISM DEVICE, characterized for having a needle protecting cover (1), a vascular catheter cannula (2) inserted in the device's

I"- body, having also in its upper portion a wing-like linear/vertical projection (7), and having also in its interior the slanted channel (9), an elastic sealing stopper (1 1), a guiding puncture needle (3) and its hollow base, in its inner part which indicates, visually, the filling with blood for its transparency (4) and (5), a pair of coupling grips on the sides.

15- 3. A VASCULAR CATHETERISM DEVICE, characterized for having a elastic sealing stopper (11) which seals the farther end of the longitudinal channel in the device's body, with the guiding puncture needle trespassing the stopper when puncturing the blood vessel, and when the needle is removed the elastic stopper seals the farther end of the channel, avoiding the leaking of the blood.