CN217245921U - Disposable fixable venous indwelling needle - Google Patents

Abstract

The utility model discloses a disposable fixable vein indwelling needle, include: the device comprises a three-way joint, a heparin cap, an end cap, an extension tube, a needle base, a needle handle, an isolating plug, a steel needle and a catheter; the back of the three-way joint and the back of the needle seat are both configured into planes, and double faced adhesive tapes are pasted on the planes. The key improvement of the indwelling needle lies in that the back of the three-way joint and the back of the needle seat are both constructed into planes, so that the contact area with the skin is enlarged, and after the double-faced adhesive tape is adhered to the two planes, the three-way joint and the needle seat can be firmly fixed through the double-faced adhesive tape, so that the adhesive tape does not need to be wound any more, and the indwelling needle is convenient to use.

Description

Disposable fixable venous indwelling needle

Technical Field

The utility model relates to a needle field is kept somewhere to the vein, especially relates to a needle is kept somewhere to disposable fixable vein.

Background

The venous indwelling needle is also called as venous trocar. The core components include a flexible catheter/cannula that can be indwelling in a blood vessel, and a stainless steel puncture guiding stylet. When in use, the catheter and the needle core are punctured into a blood vessel together, after the catheter completely enters the blood vessel, the needle core is withdrawn, and only the soft catheter is left in the blood vessel so as to carry out infusion treatment.

After the steel needle is pulled out, the vein indwelling needle needs to be fixed on the skin by using a patch and an adhesive tape so as to prevent the vein indwelling needle from falling off. This type of fixation has several disadvantages: 1. the fixation is inconvenient, and medical staff needs to prepare a plurality of application pastes and adhesive tapes for bonding, so that the fixation is complicated; 2. a large amount of adhesive tapes are wound, so that the appearance is influenced, and the puncture point is shielded, so that the situation of the puncture point is not easy to observe; 3. some people are allergic to transparent patches, and skin is easily allergic after 72 hours or 48 hours, so that improvement of the indwelling needle is required.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model aims to provide a disposable fixable venous indwelling needle.

The technical scheme of the utility model as follows: a disposable, securable venous retention needle comprising: the device comprises a three-way joint, a heparin cap, an end cap, an extension tube, a needle base, a needle handle, an isolating plug, a steel needle and a catheter; the three-way joint has a first joint, a second joint and a third joint; the heparin cap is in threaded connection with the first connector, the end cap is in threaded connection with the second connector, and the extension tube is connected between the third connector and the needle seat; the isolating plug is arranged in the needle seat, the needle seat is provided with a first end part and a second end part which are opposite, a catheter is arranged at the second end part, the needle handle is connected with the steel needle, and the steel needle is inserted into the needle seat from the first end part and penetrates through the isolating plug, and then penetrates out of the second end part and penetrates through the catheter;

the back of the three-way joint and the back of the needle seat are both configured into planes, and double faced adhesive tapes are pasted on the planes.

Further, the double-sided adhesive tape is a waterproof double-sided adhesive tape.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the key improvement of this application to keeping somewhere the needle lies in all constructing the plane with three way connection's the back and the back of needle file, and the area of contact with skin will grow like this, pastes the double faced adhesive tape back again on two planes, through the double faced adhesive tape alright with more firm fixed three way connection and needle file to just need not continue to twine the sticky tape again and apply ointment or plaster, facilitate the use, the appearance is pleasing to the eye, also is favorable to observing the puncture point.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work:

FIG. 1 is a front view of an indwelling needle according to the present invention;

FIG. 2 is a rear view of the indwelling needle of the present invention;

fig. 3 is a perspective view of the indwelling needle of the present invention.

Reference numerals:

1. a three-way joint; 2. a heparin cap; 3. an end cap; 4. an extension tube; 5. a needle seat; 6. a needle handle; 7. an isolation plug; 8. a steel needle; 9. a conduit; 10. a first joint; 11. a second joint; 12. a third joint; 13. and (4) double-sided adhesive tape.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", "radial", "axial", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

A disposable fixable venous indwelling needle according to an embodiment of the present invention is described below with reference to the accompanying drawings of fig. 1 to 3, comprising: three-way connection 1, heparin cap 2, end cap 3, extension pipe 4, needle file 5, needle handle 6, isolating plug 7, steel needle 8 and pipe 9.

The three-way joint 1 has a first joint 10, a second joint 11 and a third joint 12; the heparin cap 2 is in threaded connection with the first connector 10, the end cap 3 is in threaded connection with the second connector 11, and the extension tube 4 is connected between the third connector 12 and the needle seat 5; the three-way joint 1 is provided with a first channel and a second channel, the first channel is communicated with the first joint 10 and the third joint 12, the second channel is arranged in the second joint 11, and the second channel is communicated with the first channel; be equipped with isolation stopper 7 in the needle file 5, needle file 5 has relative first end and second end, is equipped with the holding tank that runs through to the second end from the first end in the needle file 5 moreover, and second end department is equipped with pipe 9, and needle handle 6 links to each other with steel needle 8, and steel needle 8 inserts in the holding tank of needle file 5 and passes isolation stopper 7 from the first end, then wears out and passes pipe 9 from the second end.

In the clinical injection use process of the indwelling needle, after the steel needle 8 is successfully punctured, the steel needle 8 needs to be pulled out, only the flexible catheter 9 is left in the blood vessel for carrying out infusion treatment, and during infusion, a connector of an infusion apparatus needs to be connected to the first connector 10 or the second connector 11 according to infusion requirements.

The above description is a brief introduction to the structure of the conventional venous indwelling needle, and the detailed structural configuration and working principle thereof are well known to those skilled in the art, and will not be described herein.

In practical application, three joints of the three-way joint 1 are cylindrical or conical, the needle seat 5 is cylindrical, and in the structural form, the contact areas of the three-way joint 1 and the needle seat 5 with skin are small, so that the three-way joint and the needle seat 5 can be basically wound and adhered by using adhesive tapes, application and other modes for fixation, and the three-way joint and the needle seat 5 are fixed on the skin, so that the use is very inconvenient.

Based on this, as shown in fig. 2 and fig. 3, the key improvement of the present application for the indwelling needle is to configure the back of the three-way connector 1 and the back of the needle holder 5 as flat surfaces, where the back refers to the surface of the three-way connector 1 and the needle holder 5 that contacts with the skin. Because the outer peripheral dimensions of the heparin cap 2 and the end cap 3 are larger than the outer diameter of the corresponding joint on the three-way joint 1, the back surface of the three-way joint 1 is required to be protruded backwards for a certain distance and then is processed into a plane, so that the skin is prevented from being painful due to large dimension difference with the outer peripheral walls of the heparin cap 2 and the end cap 3. When the back of the three-way joint 1 and the back of the needle seat 5 are configured into planes, the contact area with the skin is increased, so that the double-faced adhesive tape 13 can be adhered to the two planes, the three-way joint 1 and the needle seat 5 can be firmly fixed through the double-faced adhesive tape 13, the adhesive tape does not need to be wound and applied, the use is convenient, the appearance is attractive, and the puncture point can be observed conveniently.

Further, the double-sided adhesive tape 13 is a waterproof double-sided adhesive tape, so that the phenomenon that the double-sided adhesive tape loses viscosity after being wetted is avoided.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (2)

1. A disposable, securable venous retention needle comprising: the device comprises a three-way joint, a heparin cap, an end cap, an extension tube, a needle base, a needle handle, an isolating plug, a steel needle and a catheter; the three-way joint has a first joint, a second joint and a third joint; the heparin cap is in threaded connection with the first connector, the end cap is in threaded connection with the second connector, and the extension tube is connected between the third connector and the needle seat; the isolating plug is arranged in the needle seat, the needle seat is provided with a first end part and a second end part which are opposite, a catheter is arranged at the second end part, the needle handle is connected with the steel needle, and the steel needle is inserted into the needle seat from the first end part and penetrates through the isolating plug, and then penetrates out of the second end part and penetrates through the catheter;

the back of the three-way joint and the back of the needle seat are both configured into planes, and double faced adhesive tapes are pasted on the planes.

2. The disposable and fixable venous indwelling needle according to claim 1, wherein said double-sided adhesive is a waterproof double-sided adhesive.

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