CN211157749U - Infusion device - Google Patents

Abstract

The utility model discloses an infusion device, which comprises an infusion tube and an infusion protection device communicated with the infusion tube; infusion protection device includes main part and anti-return spare, anti-return spare includes butt portion, extension and restriction hole, anti-return spare set up in hold the cavity, extension one end connect in on the butt portion, be formed with the inclined plane on the two relative lateral surfaces of extension respectively, the inclined plane certainly the butt portion toward the direction external diameter convergent of the butt portion other end, restriction hole axial runs through butt portion and extension, restriction hole certainly the direction internal diameter convergent of butt portion toward the extension. The utility model relates to an infusion set simple structure, the cost is low, and it can effectually prevent infusion in-process blood backward flow, can effectual protection patient, is favorable to the patient to treat recovered.

Description

Infusion device

Technical Field

The utility model relates to an infusion device.

Background

Intravenous infusion is a method of infusing a large amount of sterile liquid, electrolyte and medicine into the liquid from veins by utilizing the principles of atmospheric pressure and hydrostatic pressure.

The infusion process requires that the infusion bottle is located above the heart of a patient to keep pressure, when the hands of the patient are lifted above the heart or the liquid medicine in the infusion bottle is about to be infused completely by infusion activity in the prior art, the pressure of the liquid medicine in the infusion tube is smaller than the pressure of the blood in the blood vessel, the blood can flow back to the infusion tube, the infusion tube is blocked due to blood coagulation caused by excessive blood backflow, the needle needs to be pricked again, in addition, the phenomenon of blood backflow can shine a large psychological shadow for the patient, and the treatment of the patient is not facilitated.

Disclosure of Invention

The utility model provides a transfusion device is in order to solve among the prior art patient's infusion activity to raise the hand to above the heart or when the liquid medicine is about to lose soon in the infusion bottle, and the liquid medicine pressure in the infusion tube is less than the blood reflux that blood in the blood vessel can cause to the transfer line in, and blood reflux too much can arouse blood coagulation to block up the transfer line, needs to prick the needle again, and blood reflux phenomenon can shine into great psychological shadow for the patient in addition, is unfavorable for the technical problem of patient's treatment.

An infusion device comprising: the infusion tube and the infusion protection device are communicated with the infusion tube;

the infusion protection device comprises a main body and a backflow-preventing piece, wherein the main body comprises a first shell and a second shell which are detachably connected, the first shell is connected with the second shell to form an accommodating cavity, the first shell is provided with a liquid inlet hole communicated with the infusion tube, the second shell is provided with a liquid discharge hole communicated with the infusion tube, the backflow-preventing part comprises a butting part, an extending part and a limiting hole, the backflow-preventing piece is arranged in the accommodating cavity, one end of the extending part is connected to the abutting part, inclined planes are respectively formed on two opposite outer side surfaces of the extension part, the outer diameters of the inclined planes are gradually reduced from the abutting part to the other end of the abutting part, the limiting hole axially penetrates through the through abutting part and the extending part, the inner diameter of the limiting hole is gradually reduced from the abutting part to the extending part, and the outer diameter of the abutting part is larger than that of the extending part; the front end of the limiting hole is communicated with the liquid inlet hole, and the rear end of the limiting hole is communicated with the liquid outlet hole.

Preferably, the first shell further comprises a liquid inlet part in a circular tube shape and a first shell connecting part integrally connected with the liquid inlet part, the liquid inlet hole penetrates through the liquid inlet part and the first shell connecting part, two opposite sides of the end part of the first shell connecting part are respectively extended with a clamping piece, and the tail end of each clamping piece is provided with a clamping hook extending inwards; the second shell further comprises a circular tube-shaped liquid discharging part and a second shell connecting part integrally connected with the liquid discharging part, the liquid discharging hole penetrates through the liquid discharging part and the second shell connecting part, an annular protruding ring part axially extends outwards from the inner side of the end part of the second shell connecting part, the outer diameter of the protruding ring part is smaller than that of the second shell connecting part, clamping grooves axially extend from the end parts of the two opposite outer sides of the second shell connecting part, and clamping grooves are formed in the tail ends of the clamping grooves in an inwards recessed mode; the clamping hook is clamped with the clamping groove.

Preferably, the abutting portion abuts on the protruding ring portion.

Preferably, the backflow preventing member is integrally formed of an elastic material.

Preferably, the backflow prevention part is made of rubber or silica gel.

Preferably, the body is rectangular.

The utility model relates to an infusion set simple structure, the cost is low, and it can effectually prevent infusion in-process blood backward flow, can effectual protection patient, is favorable to the patient to treat recovered.

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 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 according to these drawings without creative efforts.

FIG. 1 is a schematic view of an infusion process of an infusion device of the present invention;

FIG. 2 is a schematic view of the structure of the components of the infusion device of the present invention;

FIG. 3 is an exploded view of a part of the infusion set of the present invention;

FIG. 4 is a sectional view of a part of the infusion set of the present invention;

fig. 5-6 are schematic views of an infusion set of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As shown in fig. 1-6, an infusion device of the present invention includes an infusion tube and an infusion protection device 100 in communication with the infusion tube.

The infusion tube is a common plastic hose in the prior art, one end of the infusion tube is inserted into the infusion bottle to guide the liquid medicine in the infusion bottle, the other end of the infusion tube is connected with a needle head, and the needle head is pricked into the vein vessel of a patient to feed the liquid medicine in the infusion bottle into the human body.

The infusion protector 100 is provided to prevent blood in a blood vessel from flowing back into an infusion tube, and includes a main body 10 and a backflow preventer 20.

The main body 10 includes a first housing 11, a second housing 12 and an accommodating cavity 13; the first casing 11 has a tubular liquid inlet portion 111, a first casing connecting portion 112 integrally connected to the liquid inlet portion 111, and a liquid inlet hole 113 penetrating the liquid inlet portion 111 and the first casing connecting portion 112, wherein two opposite sides of an end portion of the first casing connecting portion 112 are respectively extended with a fastening member 114, and a tail end of the fastening member 114 is provided with a fastening hook 115 extending inwards; the second housing 12 has a tubular liquid discharge portion 121, a second housing connecting portion 122 integrally connected to the liquid discharge portion 121, and a liquid discharge hole 123 penetrating through the liquid discharge portion 121 and the second housing connecting portion 122, an annular protruding ring portion 124 axially extends outward from an inner side of an end portion of the second housing connecting portion 122, an outer diameter of the protruding ring portion 124 is smaller than an outer diameter of the second housing connecting portion 122, two opposite outer sides of the second housing connecting portion 122 have a locking groove 125 axially extending from the end portion, and a distal end of the locking groove 125 is recessed inward to have a locking recess 126; first casing connecting portion 112 sets up to mating connection with second casing connecting portion 122, and the connected mode is: the locking member 114 slides in from the locking groove 125, and is locked and hooked in the locking recess 126 through the locking hook 115, so as to connect the first housing 11 and the second housing 12, thereby forming the accommodating cavity 13 inside the first housing connecting portion 112 and the second housing connecting portion 122, and communicating the accommodating cavity 13 with the liquid inlet hole 113 and the liquid outlet hole 123.

The backflow preventing member 20 is integrally formed of an elastic material, for example, rubber or silicon rubber. The backflow preventer 20 comprises an abutting part 21, an extending part 22 and a limiting hole 23, wherein the limiting hole 23 is provided with a front end 231 and a rear end 232, one end of the extending part 22 is connected to the abutting part 21, two opposite outer side surfaces of the extending part 22 are respectively provided with an inclined surface 221, the outer diameter of the inclined surface 221 gradually tapers from the direction close to the abutting part 21 to the direction of the other end, the limiting hole 23 axially penetrates through the abutting part 21 and the extending part 22, the inner diameter of the limiting hole 23 gradually tapers from the abutting part 21 to the extending part 22, and the outer diameter of the abutting part 21 is larger than the outer diameter; the backflow preventer 20 is disposed in the housing cavity 13, the abutting portion 21 abuts on the end portion of the protruding ring portion 124 of the second housing connecting portion 122, so that the backflow preventer 20 is restricted and positioned in the housing cavity 13, the front end 231 of the restriction hole 23 communicates with the liquid inlet hole 113 of the main body 10, and the rear end 232 of the restriction hole 23 communicates with the liquid outlet hole 12.

The utility model relates to a when infusion set used, the feed liquor portion 111 of main part 10 was connected with the feed liquor section 99 of transfer line, and the feed liquor section 99 of transfer line sets up to be connected with the infusion bottle, and the flowing back portion 121 of main part 10 is connected with the flowing back section 99 of transfer line, and the flowing back section 99 of this transfer line is connected with the syringe needle of pricking patient's vein blood vessel, and main part 10 sets up to the rectangle form so that paste to patient's arm in this embodiment.

As shown in fig. 5, during normal transfusion, the liquid medicine in the transfusion bottle flows through the limiting hole 23 through the liquid inlet section 99 and the liquid inlet hole 113 of the transfusion tube under the action of gravity, and enters the vein of the patient through the liquid outlet hole 123, the liquid outlet section 97 of the transfusion tube and the needle head; as shown in fig. 6, when the pressure is abnormal, for example, when the patient moves to raise the arm or the amount of the liquid medicine in the infusion bottle is too small, the liquid or the venous blood in the drainage section 97 of the infusion tube starts to flow back, the backflow liquid 981 acts on the inclined surface 221, and the inclined surface 221 is pushed by the backflow liquid 981 to retract inwards and close, so that the limiting hole 23 is closed, the backflow liquid 981 is prevented from further flowing towards the infusion bottle, and when the hand of the patient returns to normal or the infusion bottle is replaced, the liquid medicine in the infusion bottle opens the closed inclined surface 221 again by gravity to return to normal liquid medicine injection.

To sum up, the utility model relates to an infusion set simple structure, the cost is low, and it can effectually prevent infusion in-process blood backward flow, can effectual protection patient, is favorable to the patient to treat recovered.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; 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: it is to be understood that the invention is not limited to the specific embodiments disclosed, but is capable of other modifications and variations, and other changes may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims (6)

1. An infusion device, comprising: the infusion tube and the infusion protection device are communicated with the infusion tube;

the infusion protection device comprises a main body and a backflow-preventing piece, wherein the main body comprises a first shell and a second shell which are detachably connected, the first shell is connected with the second shell to form an accommodating cavity, the first shell is provided with a liquid inlet hole communicated with the infusion tube, the second shell is provided with a liquid discharge hole communicated with the infusion tube, the backflow-preventing part comprises a butting part, an extending part and a limiting hole, the backflow-preventing piece is arranged in the accommodating cavity, one end of the extending part is connected to the abutting part, inclined planes are respectively formed on two opposite outer side surfaces of the extension part, the outer diameters of the inclined planes are gradually reduced from the direction close to the abutting part to the direction of the other end, the limiting hole axially penetrates through the abutting part and the extending part, the inner diameter of the limiting hole is gradually reduced from the abutting part to the extending part, and the outer diameter of the abutting part is larger than that of the extending part; the front end of the limiting hole is communicated with the liquid inlet hole, and the rear end of the limiting hole is communicated with the liquid outlet hole.

2. The infusion device according to claim 1, wherein the first housing further comprises a liquid inlet portion in a shape of a circular tube and a first housing connecting portion integrally connected with the liquid inlet portion, the liquid inlet hole penetrates through the liquid inlet portion and the first housing connecting portion, two opposite sides of an end portion of the first housing connecting portion are respectively extended with a fastener, and a tail end of the fastener is provided with a hook extending inwards; the second shell further comprises a circular tube-shaped liquid discharging part and a second shell connecting part integrally connected with the liquid discharging part, the liquid discharging hole penetrates through the liquid discharging part and the second shell connecting part, an annular protruding ring part axially extends outwards from the inner side of the end part of the second shell connecting part, the outer diameter of the protruding ring part is smaller than that of the second shell connecting part, clamping grooves axially extend from the end parts of the two opposite outer sides of the second shell connecting part, and clamping grooves are formed in the tail ends of the clamping grooves in an inwards recessed mode; the clamping hook is clamped with the clamping groove.

3. An infusion device as claimed in claim 2, wherein the abutment portion abuts against the projecting portion.

4. The infusion device as claimed in claim 3, wherein said backflow prevention member is integrally formed of an elastic material.

5. The infusion set of claim 4, wherein the backflow prevention element is configured to be made of rubber or silicone.

6. The infusion device as claimed in any one of claims 1-5, wherein said body is rectangular in shape.

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