CN211157809U

CN211157809U - Venous indwelling needle and infusion assembly

Info

Publication number: CN211157809U
Application number: CN201921356200.5U
Authority: CN
Inventors: 陈进敏; 陈才莉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-08-04
Anticipated expiration: 2029-08-20

Abstract

The utility model provides a vein indwelling needle and an infusion assembly, which relate to the technical field of medical appliances, and comprise an indwelling needle seat and a needle tube arranged on the indwelling needle seat; a barrier film and a barrier frame are arranged in the indwelling needle seat, the barrier film separates the interior of the indwelling needle seat into a first cavity and a second cavity, the second cavity is communicated with the needle tube, and the barrier frame is positioned in the first cavity and is close to the barrier film; the barrier film can generate elastic deformation under stress, the technical problem that the blood of a patient easily flows back is solved, and the technical effect of preventing blood return and avoiding repeated puncture to cause the same money is achieved.

Description

Venous indwelling needle and infusion assembly

Technical Field

The utility model belongs to the technical field of medical appliances's technique and specifically relates to a needle and infusion assembly are kept somewhere to vein.

Background

Infusion, also known as drip infusion or drip infusion, is a large dose of injection infused into the body by intravenous drip. Are usually packaged in glass or plastic infusion bottles or bags and contain no preservatives or bacteriostatic agents. When in use, the dropping speed is adjusted by the infusion apparatus, and the infusion apparatus continuously and stably enters the vein to supplement body fluid, electrolyte or provide nutrient substances.

The application of the vein indwelling needle is a better method for clinical transfusion, on one hand, the vein indwelling needle can relieve the pain of the infants caused by repeated puncture of scalp acupuncture, and can be suitable for adults with long-term transfusion. On the other hand, the workload of clinical nurses is also reduced.

However, the following problems are easily caused during transfusion:

because the needle tube is communicated with the extension tube, the movable range of the small clamp is large, blood is easy to flow back, and after a patient goes to a toilet or finishes transfusion, the hand movement of the puncture remaining needle can cause the blood to flow back into the extension tube, so that blood coagulation embolism is easy to form, the needle tube is blocked, the cost of the patient is increased, and the pain of repeated puncture is caused.

In view of this, it is important to provide a venous indwelling needle capable of preventing backflow of blood.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a needle is kept somewhere to vein to having alleviated existence among the prior art because the needle tubing communicates with each other with the extension pipe, the scope of little clip activity is big, and blood flows back out easily, and patient goes to the lavatory or the infusion finishes the back, and the hand activity of needle is kept somewhere in the puncture can lead to blood to flow back in the extension pipe, forms the blood coagulation embolism easily, blocks up the needle tubing, increases patient's expense and the painful technical problem of puncturing repeatedly.

The utility model provides a vein indwelling needle, which comprises an indwelling needle seat and a needle tube arranged on the indwelling needle seat; a barrier film and a barrier frame are arranged in the indwelling needle seat, the barrier film separates the interior of the indwelling needle seat into a first cavity and a second cavity, the second cavity is communicated with the needle tube, and the barrier frame is positioned in the first cavity and is close to the barrier film; the barrier film can generate elastic deformation under stress.

Further, the barrier film is an integral film; or the barrier film comprises a first valve and a second valve which are fixedly connected with the wall of the indwelling needle seat, and the first valve and the second valve are in seamless butt joint.

Further, the sides of the first valve and the second valve close to each other are overlapped, or the sides of the first valve and the second valve close to each other are butted.

Further, the needle core is also included;

the needle tube is sleeved outside the needle core, the needle point of the needle core extends out of the needle tube, and the rear end of the needle core penetrates through the indwelling needle seat.

Furthermore, the needle tube is fixedly connected to the front end of the indwelling needle seat.

Furthermore, the needle comprises a needle wing, and the needle wing is fixedly connected with the rear end of the needle core.

Further, the device also comprises a positive pressure joint and an extension pipe;

the first end of the extension tube is connected to the positive pressure joint, and the second end of the extension tube is connected to the indwelling needle seat.

Further, the positive pressure joint is a Y-shaped positive pressure joint, and the Y-shaped positive pressure joint comprises a first inlet, a second inlet and an outlet;

the export that the malleation connects with the first end of extension pipe is connected, the first import department that the malleation connects is provided with positive pressure valve, the second import department that the malleation connects is connected with the heparin cap.

Furthermore, a connecting piece is arranged at the rear end of the indwelling needle base, and the second end of the extension tube is communicated with the indwelling needle base through the connecting piece.

A second object of the utility model is to provide a transfusion assembly to having alleviated existence among the prior art because the needle tubing communicates with each other with the extension pipe, and the scope of little clip activity is big, and blood flows back out easily, and patient goes to the lavatory or the infusion finishes the back, and the hand activity of needle is kept somewhere in the puncture can lead to blood to flow back in the extension pipe, forms the blood coagulation embolism easily, blocks up the needle tubing, increases patient's expense and the painful technical problem of puncturing repeatedly.

The utility model provides an infusion assembly, which comprises an infusion tube and a vein indwelling needle;

the infusion tube is communicated with the vein detaining needle through an extension tube.

Compared with the prior art, the utility model provides a needle and infusion assembly are kept somewhere to vein mainly has following beneficial effect:

the utility model provides a vein indwelling needle, which comprises an indwelling needle seat and a needle tube arranged on the indwelling needle seat; a barrier film and a barrier frame are arranged in the indwelling needle seat, the barrier film separates the interior of the indwelling needle seat into a first cavity and a second cavity, the second cavity is communicated with the needle tube, and the barrier frame is positioned in the first cavity and is close to the barrier film; the barrier film can generate elastic deformation under stress;

the barrier frame is positioned in the first cavity and can prevent the barrier film from deforming due to blood pressure, and the barrier film is prevented from forming a gap for blood to pass through; during transfusion, the liquid medicine flows into the second cavity from the first cavity through the barrier film and flows into the needle tube from the second cavity; after the transfusion is finished, the separation frame can block the separation film, and blood in the needle tube is blocked by the separation film to flow into the first cavity from the second cavity.

The utility model discloses an at inside barrier shelf and the barrier film that sets up of needle file of keeping somewhere, the barrier shelf has the supporting role to the barrier film, and set up in first cavity, thereby prevent that the barrier film from receiving blood pressure deformation and producing the gap even and avoid making the blood backward flow, and then can not cause the blood return, the liquid medicine can pass the barrier film and get into in the second cavity under the pressure effect simultaneously, consequently, do not influence normal infusion, the effectual blood backward flow that has prevented, and then prevent that blood from solidifying and embolism from blockking up the needle tubing, the expense of keeping somewhere the needle and the misery that the puncture led to the fact patient repeatedly have been reduced.

The utility model provides an infusion assembly, which comprises an infusion tube and a vein remaining needle; the transfusion tube is communicated with the vein retention needle through an extension tube. The utility model provides an infusion assembly, including foretell vein indwelling needle, consequently have its all advantages.

Drawings

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

Fig. 1 is a schematic view of an overall structure of a vein indwelling needle according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a barrier film of a vein indwelling needle according to a first embodiment of the present invention shown in fig. 1;

fig. 3 is a schematic structural view of a Y-shaped positive pressure joint according to the first embodiment of the present invention shown in fig. 1;

fig. 4 is a schematic structural view of a use state of an infusion assembly according to a second embodiment of the present invention.

Icon: 100-hanging bottles; 200-a transfusion stand; 300-an infusion tube; 410-positive pressure fitting; 411 — first inlet; 4111-a positive pressure valve; 412-a second inlet; 4121-heparin cap; 413-an outlet; 420-indwelling needle seat; 421-a barrier film; 4211-a first valve; 4212-a second valve; 422-barrier frame; 423-needle wing; 424-connectors; 425-a first cavity; 426-a second cavity; 430-an extension tube; 441-a needle core; 442-a needle tip; 443-needle cannula.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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 work belong to the protection scope of the present invention.

Example one

As shown in fig. 1 to fig. 3, the venous indwelling needle provided by the present embodiment includes an indwelling needle hub 420 and a needle tube 443 arranged on the indwelling needle hub 420; a blocking film 421 and a blocking frame 422 are arranged in the indwelling needle seat 420, the blocking film 421 divides the interior of the indwelling needle seat 420 into a first cavity 425 and a second cavity 426, the second cavity 426 is communicated with the needle tube 443, and the blocking frame 422 is positioned in the first cavity 425 and is close to the blocking film 421; the barrier film 421 can generate elastic deformation under stress; during transfusion, the liquid medicine flows from the first cavity 425 to the second cavity 426 through the barrier film 421, and flows from the second cavity 426 to the needle tube 443; after the infusion is completed, the blocking frame 422 can block the blocking film 421, and the blocking film 421 blocks the blood in the needle tube 443 from flowing from the second cavity 426 to the first cavity 425.

Compared with the prior art, the venous indwelling needle provided by the embodiment mainly has the following beneficial effects:

this embodiment is through keeping somewhere inside barrier frame 422 and the barrier film 421 that sets up of needle file 420, barrier frame 422 has supporting role to barrier film 421, and set up in first cavity 425, thereby make patient's blood can not pass barrier film 421, and then can not cause the blood return, the liquid medicine can pass barrier film 421 and get into in the second cavity 426 under the pressure effect simultaneously, consequently, do not influence normal infusion, the effectual blood backward flow that has prevented of this embodiment, and then prevent that blood from solidifying and embolism from blockking up needle 443, the expense of keeping somewhere the needle and the misery that the repeated puncture caused patient have been reduced.

Specifically, the following will explain other structures of the venous indwelling needle provided in this embodiment in detail:

in an alternative of this embodiment, the barrier film 421 is a unitary film; alternatively, the barrier film 421 comprises a first valve 4211 and a second valve 4212 fixedly connected to the wall of the indwelling needle seat 420, and the first valve 4211 and the second valve 4212 are in seamless butt joint.

In an alternative of this embodiment, the sides of the first and

second valves

4211, 4212 that are adjacent to each other are arranged to overlap, or the sides of the first and

second valves

4211, 4212 that are adjacent to each other are butted up.

Specifically, the barrier film 421 should have at least the following characteristics:

firstly, the model colors of the first valve 4211 and the second valve 4212 are consistent with the model color of the venous indwelling needle, so that the venous indwelling needle is convenient to observe;

secondly, preferably, the first valve 4211 and the second valve 4212 are both in the shape of a semicircle with the same size, the arc parts of the first valve 4211 and the second valve 4212 are both fixedly connected with the cavity wall of the indwelling needle seat 420, and the straight edges are mutually abutted or overlapped;

finally, the first valve 4211 and the second valve 4212 are of moderate hardness, mainly made of hard silica gel, and prevent blood from flowing back into the extension tube 430.

In the alternative of this embodiment, the blocking frame 422 is fixedly connected to the cavity wall of the indwelling needle holder 420; moreover, the blocking frame 422 is arranged adjacent to the first valve 4211 and the second valve 4212, and the blocking frame 422 can play a role of supporting the blocking film 421 to prevent blood from flowing backwards, so that the blocking frame 422 should be fixed on the cavity wall of the indwelling needle seat 420 and arranged adjacent to the first valve 4211 and the second valve 4212 to prevent the blocking film 421 from deforming. Alternatively, the blocking frame 422 is disposed on a side of the first valve 4211 and the second valve 4212 facing the first cavity 425, and the blocking frame 422 is fixed on each of the first valve 4211 and the second valve 4212.

Preferably, the blocking frame 422 may be a triangular frame.

In an alternative of this embodiment, a stylet 441 is also included; the needle tube 443 is sleeved outside the needle core 441, the front end of the needle core 441 forms a needle tip 442 convenient for puncture, the needle tip 442 of the needle core 441 extends out of the needle tube 443, and the rear end of the needle core 441 penetrates through the indwelling needle seat 420. Further, the needle tube 443 is fixedly connected to the front end of the indwelling needle hub 420. In addition, the needle wing 423 is further included, and the needle wing 423 is fixedly connected to the rear end of the needle core 441. In order to facilitate the withdrawal of the needle by the nurse, a needle wing 423 for facilitating the holding should be provided on the indwelling needle holder 420. Preferably, needle wing 423 may be sleeved outside indwelling needle holder 420.

In the puncture process, the needle tube 443 is inserted into the blood vessel together with the needle core 441, after the needle tube 443 is fed into the blood vessel, the needle wing 423 is separated from the indwelling needle holder 420 by holding the needle wing 423, the needle core 441 is withdrawn, and finally the flexible needle tube 443 is embedded into the blood vessel for transfusion.

In an alternative embodiment, the core 441 and the tip 442 are made of metal. Preferably, 304 stainless steel is used, and should be sterilized before use, or the disposable core 441 and tip 442 may be used directly.

In an alternative of this embodiment, a positive pressure fitting 410 and an extension tube 430 are also included; a first end of extension tube 430 is attached to positive pressure fitting 410 and a second end of extension tube 430 is attached to indwelling needle hub 420.

Specifically, the positive pressure joint 410 is a Y-shaped positive pressure joint, and the Y-shaped positive pressure joint includes a first inlet 411, a second inlet 412, and an outlet 413; an outlet 413 of the positive pressure joint 410 is connected with a first end of the extension pipe 430, a positive pressure valve 4111 is arranged at a first inlet 411 of the positive pressure joint 410, and a heparin cap 4121 is connected at a second inlet 412 of the positive pressure joint 410.

Wherein, the malleation design, inject when guaranteeing the malleation pipe sealing effect and seal the pipe behind the pipe liquid and revolve round and leave, can guarantee the malleation and seal the pipe and effectively reach reasonable time of keeping somewhere, embody and keep somewhere needle using meaning. The positive pressure joint 410 has an automatic positive pressure function, so that sufficient positive pressure can be generated, and the positive pressure effect during pipe sealing is ensured. The positive pressure needle has dual safety effect, and needleless connector design, can do not have the needle connection, avoid nurse's daily operation hour puncture risk, not only promote nurse occupational safety, can also guarantee patient's infusion safety simultaneously.

In addition, the heparin cap 4121 imitates the effect of the Rieful principle on the venous indwelling needle tube sealing, so that the medical cost of a patient is reduced, and the working efficiency of nurses is improved. The needle is matched with a vein retention needle, can be used for transfusion and medicine injection by puncturing for multiple times and repeatedly, is provided with a standard locking joint, and can prevent blood backflow and prevent anticoagulation by injecting heparin sodium. The application of heparin cap imitation method to seal the tube can prolong the service life of the vein indwelling needle and reduce the medical cost of the patient.

In an alternative embodiment, a connector 424 is provided at the rear end of indwelling needle hub 420 and the second end of extension tube 430 is in communication with indwelling needle hub 420 via connector 424.

Example two

On the basis of the first embodiment, as shown in fig. 4, the infusion assembly provided by the present embodiment includes an infusion tube 300 and a venous indwelling needle; the infusion tube 300 is in communication with the venous indwelling needle through an extension tube 430.

Specifically, with continued reference to fig. 4, the infusion assembly includes an infusion tube 300, a dropper 100, and a venous indwelling needle; the transfusion bottle 100 is hung on the transfusion stand 200, a first end of the transfusion tube 300 is inserted into the transfusion bottle 100, and a second end of the transfusion tube 300 is communicated with a first inlet 411 of the positive pressure joint 410. When in use, the liquid medicine in the transfusion bottle 100 is conveyed to the positive pressure joint 410 through the transfusion tube 300, at the moment, the positive pressure valve 4111 is opened, and the liquid medicine enters the indwelling needle seat 420 through the extension tube 430 and is conveyed into the body of a patient through the needle tube 443.

Compared with the prior art, the infusion assembly that this embodiment provided mainly has following beneficial effect:

the infusion assembly provided by the embodiment comprises the venous indwelling needle, so that all the advantages of the infusion assembly are achieved.

It should be noted that the infusion assembly may also include other structures, which are disclosed in the prior art and will not be described herein.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present embodiment, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A venous indwelling needle, comprising: an indwelling needle seat (420) and a needle tube (443) arranged on the indwelling needle seat (420);

a blocking film (421) and a blocking frame (422) are arranged in the indwelling needle seat (420), the blocking film (421) divides the interior of the indwelling needle seat (420) into a first cavity (425) and a second cavity (426), the second cavity (426) is communicated with the needle tube (443), and the blocking frame (422) is positioned in the first cavity (425) and is close to the blocking film (421); the barrier film (421) can generate elastic deformation under stress.

2. The venous retention needle according to claim 1, characterized in that the barrier membrane (421) is a one-piece membrane; or the barrier film (421) comprises a first valve (4211) and a second valve (4212) fixedly connected to the wall of the indwelling needle seat (420), and the first valve (4211) and the second valve (4212) are in seamless butt joint.

3. The venous retention needle according to claim 2, characterized in that the sides of the first and second valves (4211, 4212) that are close to each other are arranged overlapping or the sides of the first and second valves (4211, 4212) that are close to each other are butted up.

4. The venous retention needle according to claim 1, further comprising a core (441);

the needle tube (443) is sleeved outside the needle core (441), the needle point (442) of the needle core (441) extends out of the needle tube (443), and the rear end of the needle core (441) penetrates through the indwelling needle seat (420).

5. The venous indwelling needle according to claim 1 or 4, wherein the needle tube (443) is fixedly connected to the forward end of the indwelling needle hub (420).

6. The venous indwelling needle of claim 4, further comprising a needle wing (423), the needle wing (423) being fixedly attached to the rear end of the core (441).

7. The venous retention needle of claim 1 further comprising a positive pressure fitting (410) and an extension tube (430);

the first end of the extension tube (430) is connected to the positive pressure connector (410), and the second end of the extension tube (430) is connected to the indwelling needle holder (420).

8. The venous indwelling needle of claim 7, wherein the positive pressure fitting (410) is a Y-type positive pressure fitting, and the Y-type positive pressure fitting comprises a first inlet (411), a second inlet (412), and an outlet (413);

an outlet (413) of the positive pressure joint (410) is connected with a first end of the extension pipe (430), a positive pressure valve (4111) is arranged at a first inlet (411) of the positive pressure joint (410), and a heparin cap (4121) is connected at a second inlet (412) of the positive pressure joint (410).

9. The venous indwelling needle according to claim 7, wherein the indwelling needle hub (420) is provided at its rear end with a connector (424), and the second end of the extension tube (430) communicates with the indwelling needle hub (420) via the connector (424).

10. An infusion assembly comprising an infusion tube (300) and the venous indwelling needle of any of claims 1 to 9;

the infusion tube (300) is communicated with the venous indwelling needle through an extension tube (430).