Improved venipuncture device.

MEMORY <

REE / Case 5734

EXTRACT OF THE DESCRIPTION

An improved vein drilling device includes a catheter provided with a catheter socket at one end, with a needle socket at one end, and at the second end a sharp tip extending through the catheter and catheter socket . A device. The flexible closure valve is mounted on the catheter socket; to close the catheter when the needle has been removed. The improvement consists of a dowel provided with fins. , ζ has an axial hole adapted to be telescopically positioned and connected to the catheter. A pair of flexible fins' arranged in opposite directions are integrally formed »*» and extend from the flange provided with fins. ,

• ·. ·

A zone of reduced thickness in each of the flex-ά fins.

• · · · bles, along a part of the width of the fins.

adjacent to the dowel fitted with fins, it allows the fins to be bent easily upwards. Accordingly, the fins can be pressed together between the thumb and the index finger, thus facilitating the introduction of the needle into the patient's vein.

BACKGROUND OF THE INVENTION

The present invention relates generally to catheter introduction devices, and more particularly to improvements introduced in catheter introduction devices that facilitate the attachment of the device and thus the introduction of a catheter into the patient's vein. .

To date, devices have been used such as structures provided with fins and ribbons to facilitate the installation of intravenous needles and to hold the needle in the skin after vein perforation. As examples of the prior art, mention may be made of U.S. Patent No. 2,725,058 - Intra / venous needle assembly, in the name of AS Rathkey, published on November 29, 1955; the United States patent, number

3-064.648 - Intravenous needle assembly, in the name of A- P ..

··. '·

Bujan, published on November 20, 1962; the patent of · ·. *. · · · · the United States, number 3-589-361 - Intravenous catheter unit, or intravenous catheter with support provided with flexible fins and pispo- · Introduction, on behalf of Douglas A. Loper and So - / * '·.

cios, published on June 29, 1971; and the patent of · · · «n

Estade®í'Unido &, number 3-537-451 - Intravenous Catheter Unit. ' •% noso don Dismountable Introduction Device, in the name of Dale P. Beck, and partners, published on November 3, 1970.

In the past, there has been a problem in failing teeth sufficiently flexible to allow easy clamping and drilling of the patient's vein during use, and at the same time being fixed in a fixed manner. a catheter device. Furthermore, it has been found that a particular fin size is not particularly well suited for fixing with ribbons on certain parts of the anatomy. Accordingly, an advantage of the present invention is to provide a pair of resilient fins and a finned bushing in the form of a modular assembly that can be easily connected to catheter devices. A further advantage of the present invention is to provide a bushing provided with fins and a bushing assembly provided with fins of this type, Reduced price and easy to manufacture. Another advantage of the invention is to provide a set of ale-

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: ~ Ά tas and finned bushing in a variety of sizes dren, populating connected to catheter devices for fixation FACI litar dicfccB tape devices in various parts of the anatomy.

SUMMARY OF THE INVENTION -

The present invention relates generally to vein piercing devices and more particularly to a finned catheter device. The invention includes a catheter having a catheter bushing in its former.

Proximia extremity, with a needle provided with a cap * »1 needle in its proximal end and coaxialment'fe extends through the catheter hub and catheter. A flexible closure element is connected to the catheter at its proximal end. The present invention represents an improvement; ". ·· ,,

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A pair of flexible fins extending in opposite directions are connected to the bushing provided with heads. Each fin has a surface of reduced thickness along a part of the width of the fin adjacent to the bushing provided with fins. The zone of reduced thickness facilitates the folding of the fins, which makes it easier to hold the catheter from the top during the perforation of the vein.

In a preferred embodiment, the catheter hub has a tubular portion that extends toward the far end, and that is connected to the same catheter.

This tubular portion is of an approximately equal diameter)

5 to the diameter of the axial hole of the dowel element provided with fins. Accordingly, the finned bushing member can be press fit onto the tubular part of the catheter hub and be fixedly secured to it. mode in this tubular portion. A supplementary characteristic of the invention consists in the fact that the cap⁰ provided with fins can be disassembled and changed in the case;

* ··? .

ter, which allows the use of a variety of fin sizes b V * cnn a particular catheter, in order to choose the size to be attached to various parts of the patient's body- *

you, such as leg, shoulder, chest or wrist. '

A further feature of the invention consists in an appendage-shaped element formed from a single piece of steel and extending from the sleeve element provided with r * r.

Λ p ft »* of fin. This appendix is ​​constructed and arranged in such a way that it can be easily manipulated with a single finger.

Accordingly, the appendage can be used to separate the catheter portion of the device from the needle portion by holding the needle hub at the same time that the appendage member is moved away from the needle hub with a single finger.

In a preferred embodiment, the flexible fins and the finned bushing member are made of an elastic flexible plastic material, such as polyethylene. no, polypropylene, polybutadiene or polyvinyl chloride. Accordingly, the finned bushing member can include a snap-fit ​​mechanism that selectively connects the finned bushing to the catheter, as needed. The tube can also be primed between the fins during the perforation of the vein.

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A further embodiment of the invention includes the use of a flexible set of fins and dowels provided with fins, intended to be used with an intravenous needle assembly. A hollow needle having a dowel connected at its proximal end and a sharp tip at its end. The raised side is inserted through the axial hole of the flange provided with fins. In this case also, the specter^ORor reduced of the fins facilitates its folding.

The invention further includes a method for performing the drilling of veins using the catheter device des' f H described above. The method includes the operations involved in tightening the flexible fin elements toward the thumb and the user's index finger. Next ^; the needle and catheter are partially inserted into the vein '/;

* r ⁿ · Of the patient. Then the flexible fin elements can be freed. Thereafter, the needle cap is pushed between the thumb and finger of the user's heart, and the posterior appendage element located on the finned sleeve is pushed forward with the index finger, thus separating the needle sleeve from the needle. catheter cap and thus removing the sharp tip of the needle located in the catheter. Next, the catheter can be easily inserted deeper into the patient's vein.

BRIEF DESCRIPTION OF TWO DRAWINGS Figure 1 is a front perspective view of a modular set of fins and bushing provided with fins.

Figure 2 of the drawings is a perspective view of the back of a Y-shaped catheter, telescopically inserted into the modular cap assembly provided with fins of Figure 1.

Figure 3 of the drawings is a side view, partially open, of a needle and a needle cap during its separation from the catheter and the cap assembly provided with fins of Figure 2.

Figure 4 of the drawings is a side view of a needle and a needle cap during s ^ Repair of the catheter and the catheter cap of the figure

2. i; * ·.

Figure 5 of the drawings is a front view, in perspective, of a variant embodiment of the modular assembly of bushing provided with fins of figure 1. which • · · · a part of the appendix that extends from the '. ace, s quillo provided with fins, with a curved shape. /*.**.

• · · · Figure 6 of the drawings is a front view · * ep.

: * · · · Perspective, of a flexible tube and needle assembly, telescopically disposed and held in the modular casquillo assembly provided with needles of figure 1.

DESCRIPTION DETAILED OF THE PREFERRED EMBODIMENT

Although the invention is capable of being embodied in numerous different ways, several specific embodiments are described in detail in the drawings, it being understood that the present description is to be considered as an example of the principles of the invention and not it is intended to limit the same to the embodiments illustrated.

The improved vein drilling device 10, which is illustrated in Figure 1, includes a bushing member provided with fins 12, having an axial hole 14 extending therethrough, and which is adapted to telescopically receive a device. of fixation in the catheter.

A pair of sections of flexible fins 16 and 18 extending in opposite directions are flexibly connected to the dowel element provided with fins 12. A thermal aspect of said flexible fastening device is the presence of thickness zones. reduced 20 and 22 in the sections of flexible fins 16 and 18, along a portion of «u * ·. · * Width adjacent to the dowel element fitted with fins • · ·

12. The zones of reduced thickness 20 and 22 allow to fold the ends up 16 and 18 together, and hold them tightly. Therefore, it is possible to use a special method of vein perforation, in which the catheter is held from the top by means of the flexible sections, which facilitates the realization of this perforation. vein It will be noted in this regard that the preseiiVe 'in

· · The present invention represents a net improvement over the prior art catheter devices having flexible fins, the fins 16 and 18 of the present device 10 being made of a flexible elastic material, such as polyethylene or chloride of pblívíñiTo, ideally adapted to be folded at the same time that it has a sufficient rigidity to be placed in a flat way in order to fix it by means of tapes, adhesive on the skin, the use of a modula. The endowed with fins 12 of fins 16 and 18 allows a different material to be used for the construction of the catheter socket 26. Accordingly, a strong plastic material such as transparent rigid polyvinyl chloride can be used for the catheter cap. A further feature of the invention is that by using a modular cap provided with fins 12 and fins 16 and 18, it is possible to choose between various sizes of fins to appropriately hold the fins at the vein piercing site, for example e ^. legs, chest or wrist.

As shown in FIG. 2 of the drawings, the axial hole 14 of the finned bushing element is constructed and arranged to receive telescopically;

a catheter such as catheter 24. Catheter 24 is connected with a catheter hub 26. The catheter hub has a tubular portion 28 whose outer diameter is approximately equal to internal diameter of the axial hole * •

14. Accordingly, the tubular part 28 can be pressure adapted and fixedly fastened to the shell element 11o equipped with fins 12. Moreover, as illustrated, the catlétor

·. · Has a supplementary orifice 25 extending a.pan. · · · * * Ti-r of it, with a blexible tube 27 connected to it, intended to be used as a variant of conduit in the catheter

24. The pierceable closure element 29 hermetically seals the proximal portion of the catheter hub 26.

As seen more clearly in Figure 3 of the drawings, the ferrule provided with fins 12 includes an appendage 30 extending vertically therefrom. The tab 30 is constructed and arranged so that it can be pushed with a single finger in order to separate the catheter hub 26 from the needle hub 31 and the needle 32. As seen in FIG. 3, during the use of the As a result, the needle casing 31 is held between the thumb and the user's middle finger. The index finger can then be used to push forward the catheter hub 26, in order to withdraw the needle 32 out of the catheter 24. In alternative, the catheter hub 26 can be held in place by exerting a pressure against the appendix 30. at the same time that ex^ν ..... «KWwiiog ;!

- · «. .: they bring the needle cap 31 and the needle 32 out of the case. catheter 26

As can be seen in Figure 3 of the drawings, the catheter element provided with fins 12 can include a plurality of snap fasteners, such as the pressure fastening device 34 that allows you to connect * ζΓ;

• · · · selectively separate the flange sleeve 12 with connection • »to the catheter sleeve 26, in the embodiment ilp ^ ha! · * *, The press-fit device 34 includes a rectangular aftertreatment extending from the proximal portion of the flap casing 12, and having a tip 35 adapted to be slidably coupled with a straight orifice. put • ·. · "Tooth formed in the catheter cap 26. ··· ..

• · · · · · ·

As seen in figure 4 of the drawings, the improved vein perforation device 10 is also adapted so that it is possible to separate the catheter sleeve 26 from the needle sleeve 31 using both hands. illustrated, the flexible fins 16 and 18 are raised vertically by rotating them around the fin flange

12 and holding them between the user's thumb and forefinger. The needle 32 with the catheter 24 arranged coaxially around it can then be inserted into the vein of the patient. When the needle 32 and the catheter 24 have been inserted into the vein, the fins 16 and 18 can be maintained in their si. At the same time, the needle cap 31 of the catheter sleeve 26 is removed, this is usually done with the thumb and the index finger of the second hand of the user. In this way the needle 12 is withdrawn from the device allowing the flexible catheter 24 to be easily inserted beyond the patient's vein.

^; * 13

As can be seen in figure 5 of the drawings, the fins 16 and j8 can include raised sections 36 and 38 which are adapted to compress a part of the flexible tube 27 between them, with it in order to prevent the circulation of the liquid to through the tube. The sections in relay. · ··· and 38 compress the flexible tube 27 when they bend lq.?.*; flexible flaps 16 and 18 in vertical position, thus making them lie in opposite positions against the fleyi tube * B3, e.

• · ·

As can be seen more clearly in figure 6 of the drawings, in a variant embodiment, the invention can also include an intravenous needle assembly 60, which includes a hollow needle 62 connected in a fixed manner and which is tiende · »tends to start from the needle cap 64. A flexible section of flexure 66 extends from the proximal part of the needle hub 64. The axial hole 14 extending through the cap provided with fins 12 is adapted to telescopically receive and hold the needle sleeve 64. In this case also, the flexible fins 16 and 18 are threaded in opposite positions relative to the bushing provided with fins 12 and are adapted to be fastened afterwards. of having been raised in a vertical position.In this way it is possible to use a vein drilling technique in which the hollow needle is held from the top, which allows a more precise control of the angle and force applied during the drilling of the vein.

The foregoing description and the drawings have a merely explanatory and illustrative character of the invention, and the experts in the matter, in light of the foregoing, may introduce modifications and variants therein without departing from the scope of the invention that It is outlined in the enclosed instructions.