Infusion apparatus drip cup with blood return prevention structure

Abstract

The utility model relates to the technical field of infusion apparatus, in particular to an infusion apparatus drip cup with a blood return prevention structure, which comprises a drip cup main body, a fixed backflow prevention film and a movable backflow prevention film, a cap main body is mounted at the top of the drip cup main body, and the movable backflow prevention film is wrapped on the inner side of the cap main body. A fixed backing ring is arranged on the inner wall of the top of the drip cup body, a threaded outer ring is arranged on the outer wall of the top of the drip cup body, a fixed anti-backflow film is erected on the inner side of the fixed backing ring, an outer limiting plate is arranged on the outer edge of the top of the fixed anti-backflow film, and a cross slot is formed in the bottom of the fixed anti-backflow film; the movable backflow prevention film comprises an inner convex ball part and an outer concave ring part; the drip cup solves the problems that in the prior art, an existing drip cup can only have a simple liquid medicine temporary storage function and exhaust gas carried by liquid medicine when the liquid medicine is dripped, but for an infusion apparatus, the blood return condition is prone to occurring during infusion, the liquid medicine backflow condition is caused, and danger is increased to a patient.

Description

Technical Field

[0001] The utility model relates to the technical field of infusion sets, in particular to an infusion set drip pot with a blood return prevention structure. Background Art

[0002] Infusion set is a common medical consumable. After sterilization, it establishes a channel between the vein and the liquid medicine for intravenous infusion. It is generally composed of eight parts: intravenous needle or injection needle, needle cap, infusion hose, liquid medicine filter, flow rate regulator, drip pot, bottle stopper puncture device, air filter, etc. Some infusion sets also have injection parts, dosing ports, etc.

[0003] The existing drip pot can only play a simple function of temporarily storing the medicine liquid and discharge the gas carried by the medicine liquid when it is dripped in. However, for the infusion device, blood return is easy to occur during the infusion, resulting in the backflow of the medicine liquid, which increases the risk to the patient.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an infusion set drip pot with an anti-blood backflow structure is proposed, in order to achieve a more practical purpose. Utility Model Content

[0005] The utility model aims to provide an infusion device drip pot with a blood backflow prevention structure to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an infusion set drip pot with an anti-backflow structure, comprising a drip pot body, a fixed anti-backflow membrane and a movable anti-backflow membrane, a cap body is installed on the top of the drip pot body, the inner side of the cap body is wrapped with the movable anti-backflow membrane, a fixed gasket is provided on the top inner wall of the drip pot body, a threaded outer ring is provided on the top outer wall of the drip pot body, a fixed anti-backflow membrane is mounted on the inner side of the fixed gasket, an outer limiting plate is provided on the top outer edge of the fixed anti-backflow membrane, and a cross slot is provided on the bottom of the fixed anti-backflow membrane, the movable anti-backflow membrane comprises an inner convex ball portion and an outer concave ring portion, the inner convex ball portion is provided in the middle of the movable anti-backflow membrane, and the outer concave ring portion is provided around the outer circle of the movable anti-backflow membrane.

[0007] Furthermore, a threaded outer ring is provided on the top outer wall of the drip pot body.

[0008] Furthermore, the drip pot body forms a detachable structure through the threaded outer ring and the cap body.

[0009] Furthermore, an inner limit plate is sleeved on the inner wall of the cap body, and an infusion notch is connected to the top of the cap body.

[0010] Furthermore, the cap body cooperates with each other up and down through an inner limiting plate and an outer limiting plate, and the outer limiting plate is squeezed by the inner limiting plate to form a fixed structure.

[0011] Furthermore, the movable anti-backflow membrane has a W-shaped distribution in cross-section.

[0012] The utility model provides an infusion device drip pot with an anti-blood backflow structure, which has the following beneficial effects:

[0013] 1. The drip pot of the utility model adopts a detachable structure up and down, and is made of plastic material as a whole, so that the internal state of the drip pot can be observed;

[0014] The movable anti-backflow membrane on the upper side adopts the method of convex in the middle and concave in the outer circle. The overall structure is W-shaped. The outer concave part adopts an impermeable membrane and the inner part adopts a filter membrane. When feeding, the liquid penetrates the filter membrane from the middle and drips down, meeting the normal filtering effect.

[0015] When blood reflux occurs, causing the liquid in the tube to rise, it will first contact the outer concave part, causing the movable anti-reflux membrane to float up as a whole, and then use the bulge in the middle to cause the inner convex ball part to deform and block the infusion slot upward, pressurizing the infusion slot to prevent liquid reflux;

[0016] 2. The movable anti-backflow membrane adopts an integrated membrane structure, with a hemispherical concave shape as the whole, and a cross slot at the bottom, so that the liquid medicine can drip downward from the center of the cross slot;

[0017] When liquid refluxes, the arc plate at the bottom of the movable anti-reflux membrane can provide better support, and the liquid will flow outward along the arc surface, slowing down the liquid reflux speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only used to illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention. In the drawings:

[0019] Figure 1 It is a three-dimensional structural schematic diagram of an infusion device drip pot with an anti-blood backflow structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the partial three-dimensional structure of the drip pot body of an infusion device drip pot with an anti-blood backflow structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of a fixed anti-backflow membrane of an infusion device drip pot with an anti-blood backflow structure according to the utility model;

[0022] Figure 4The utility model is a schematic diagram of the three-dimensional structure of a movable anti-backflow membrane of an infusion device drip pot with an anti-blood backflow structure.

[0023] In the figure: 1. drip pot body; 101. threaded outer ring; 102. fixed gasket; 2. cap body; 201. inner limit plate; 3. infusion slot; 4. fixed anti-backflow membrane; 401. outer limit plate; 402. cross slot; 5. movable anti-backflow membrane; 501. inner convex ball part; 502. outer concave ring part. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4The utility model provides a technical solution: an infusion set drip pot with an anti-backflow structure, comprising a drip pot body 1, a fixed anti-backflow membrane 4 and a movable anti-backflow membrane 5, a cap body 2 is installed on the top of the drip pot body 1, the inner side of the cap body 2 is wrapped with the movable anti-backflow membrane 5, a fixed gasket ring 102 is arranged on the top inner wall of the drip pot body 1, a threaded outer ring 101 is arranged on the top outer wall of the drip pot body 1, a fixed anti-backflow membrane 4 is arranged on the inner side of the fixed gasket ring 102, and an outer limit plate 401 is arranged on the top outer edge of the fixed anti-backflow membrane 4 , and a cross slot 402 is provided at the bottom of the fixed anti-backflow membrane 4, the movable anti-backflow membrane 5 includes an inner convex ball portion 501 and an outer concave ring portion 502, the middle part of the movable anti-backflow membrane 5 is provided with an inner convex ball portion 501, and the outer concave ring portion 502 is provided around the outer ring of the movable anti-backflow membrane 5; a threaded outer ring 101 is provided on the top outer wall of the drip pot body 1; the drip pot body 1 forms a detachable structure through the threaded outer ring 101 and the cap body 2; the inner wall of the cap body 2 is sleeved with an inner limit plate 201, and the top of the cap body 2 is connected with an infusion slot 3; the cap body 2 The inner limit plate 201 and the outer limit plate 401 cooperate with each other up and down, and the outer limit plate 401 is squeezed by the inner limit plate 201 to form a fixed structure; the movable anti-backflow membrane 5 is W-shaped in cross-section; the drip pot as a whole adopts a detachable structure up and down, and is made of plastic material as a whole, so that the internal state of the drip pot can be observed; the movable anti-backflow membrane 5 on the upper side adopts a method of convexity in the middle and concave in the outer circle, and the overall structure is W-shaped, the outer concave part adopts an impermeable membrane, and the inner part adopts a filter membrane. When feeding, the liquid penetrates the filter membrane from the middle and drips down, meeting the normal filtering effect; when blood backflow occurs, When the liquid in the tube rises, it will first contact the outer concave part, causing the movable anti-backflow membrane 5 to float up as a whole, thereby utilizing the bulge in the middle to cause the inner convex spherical part 501 to deform and block the infusion slot 3 upward, thereby applying pressure to the infusion slot 3 to prevent the liquid from flowing back. The movable anti-backflow membrane 5 adopts an integrated membrane structure, and the overall hemispherical concave shape is set, and a cross slot 402 is opened at the bottom, and the liquid can drip downward from the center of the cross slot 402. When the liquid refluxes, the arc plate at the bottom of the movable anti-backflow membrane 5 can provide better support, and the liquid will flow outward along the arc surface to reduce the liquid reflux speed.

[0026] Working principle: When assembling this type of infusion drip pot with an anti-backflow structure, the fixed anti-backflow membrane 4 is placed on the inner side of the fixed gasket ring 102 of the drip pot body 1, and then the cap body 2 equipped with the movable anti-backflow membrane 5 is installed on the outer side of the drip pot body 1, so that the drip pot body 1 and the cap body 2 are combined into an integrated structure. When infusing, the medicine is allowed to enter from the infusion slot 3 at the top, and the medicine is allowed to drip through the inner convex ball part 501 of the movable anti-backflow membrane 5, and the filtering structure of the inner convex ball part 501 is used for filtering. When the medicine drips, it will fall into the fixed anti-backflow membrane 4, and finally from the center of the cross slot 402 of the fixed anti-backflow membrane 4. It drips downward and then enters the fixed anti-backflow membrane 4 to carry out the drug delivery operation. When blood backflow occurs, the internal drug will be squeezed to surge up. When surging up, it will pre-contact the concave fixed anti-backflow membrane 4, so that as the horizontal plane rises, the fixed anti-backflow membrane 4 will be squeezed, and the cross slot 402 will converge inward to form the first anti-backflow treatment. As the blood backflow continues, after breaking through the first line of defense, it will contact the upper movable anti-backflow membrane 5, so that the movable anti-backflow membrane 5 floats as a whole, thereby utilizing the bulge in the middle to cause the inner convex ball part 501 to deform and block the infusion slot 3 upward, pressurize the infusion slot 3, and prevent the liquid from flowing back.

[0027] The above description is only a specific implementation method of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be thought of by any technician familiar with the field within the technical scope disclosed by the utility model without creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. An infusion device drip pot with an anti-blood backflow structure, comprising a drip pot body (1), a fixed anti-backflow membrane (4) and a movable anti-backflow membrane (5), characterized in that: A cap body (2) is installed on the top of the drip pot body (1), and a movable anti-backflow membrane (5) is wrapped on the inner side of the cap body (2). A fixed gasket (102) is arranged on the inner wall of the top of the drip pot body (1), and a threaded outer ring (101) is arranged on the outer wall of the top of the drip pot body (1). A fixed anti-backflow membrane (4) is mounted on the inner side of the fixed gasket ring (102). An outer limit plate (401) is arranged on the outer edge of the top of the fixed anti-backflow membrane (4), and a cross slot (402) is opened at the bottom of the fixed anti-backflow membrane (4). The movable anti-backflow membrane (5) includes an inner convex ball portion (501) and an outer concave ring portion (502). The inner convex ball portion (501) is arranged in the middle of the movable anti-backflow membrane (5), and the outer concave ring portion (502) is arranged around the outer ring of the movable anti-backflow membrane (5).

2. The drip pot of an infusion device with a blood backflow prevention structure according to claim 1, characterized in that: The drip pot body (1) forms a detachable structure through the threaded outer ring (101) and the cap body (2).

3. The drip pot of an infusion device with a blood backflow prevention structure according to claim 1, characterized in that: An inner limit plate (201) is sleeved on the inner wall of the cap body (2), and an infusion notch (3) is connected to the top of the cap body (2).

4. The drip pot of an infusion device with a blood backflow prevention structure according to claim 3, characterized in that: The cap body (2) cooperates with each other up and down through an inner limiting plate (201) and an outer limiting plate (401), and the outer limiting plate (401) is pressed by the inner limiting plate (201) to form a fixed structure.

5. The drip pot of an infusion device with a blood backflow prevention structure according to claim 1, characterized in that: The movable anti-backflow membrane (5) is distributed in a W-shape in cross-section.

Images