CN211327352U

CN211327352U - Nutrient solution infusion pipe and filter thereof

Info

Publication number: CN211327352U
Application number: CN201921620423.8U
Authority: CN
Inventors: 周璇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-08-25
Anticipated expiration: 2029-09-26

Abstract

The utility model belongs to the technical field of medical instrument, especially, relate to a nutrient solution infusion pipe and filter thereof. Including the shell body, be provided with filtration membrane in the shell body, filtration membrane divide into first cavity and second cavity with the shell body inner chamber, offers the first interface that is linked together with first cavity on the shell body, still offers the second interface that is linked together with the second cavity on the shell body, and filtration membrane is variable aperture membrane. Has the advantages that: collect automatic end liquid and liquid medicine filter two functions as an organic whole, when nutrient solution infusion process was accomplished, keep the liquid level not descend for a long time at the assigned position, avoid the air to get into the stomach automatically, and follow-up need not exhaust again to alleviate nursing staff's operating pressure.

Description

Nutrient solution infusion pipe and filter thereof

Technical Field

The utility model belongs to the technical field of medical instrument, especially, relate to a nutrient solution infusion pipe and filter thereof.

Background

Enteral nutrition is a nutritional support means for supplying nutrients needed by metabolism and other various nutrients through the gastrointestinal tract, and is supplemented by oral administration and nasal feeding to enter the gastrointestinal tract for digestion and absorption. Parenteral nutrition is supplemented by intravenous injection, through the blood circulation.

Basic components of parenteral nutrition: amino acids, fat emulsion, saccharides, vitamins, electrolytes, trace elements and water. Essential components of enteral nutrition: water, maltodextrin, casein, vegetable oil, dietary fiber soybean polysaccharide, mineral substances, vitamins and trace elements. The molecular weight and concentration of the basic components of the enteral nutrient solution are far higher than those of parenteral nutrition, and the viscosity of the corresponding enteral nutrient solution is also higher than that of the parenteral nutrient solution.

A disposable nutrient solution infusion apparatus used clinically is specially used for parenteral nutrient solution infusion and intravenous infusion. The nutrient solution infusion apparatus comprises an air needle assembly, a bottle penetrating needle, a horizontal stopper, an infusion tube, a dropping funnel assembly, a flow regulator, a Y injection piece, a fine liquid medicine filter, an outer conical joint and the like. The fine liquid medicine filter adopts an automatic liquid stopping film, and integrates the two functions of automatic liquid stopping and liquid medicine filtering. The automatic liquid stopping is to keep the liquid level at the designated position for a long time without dropping when the transfusion process is finished, and automatically avoid air from entering veins. Air embolism is easy to occur after air enters the intravenous nutrient solution, so that a nurse needs to monitor the air embolism from time to time, and the air embolism needs to be manually carried out when air bubbles enter the intravenous nutrient solution. And after the automatic liquid stopping function is realized, air is not easy to enter the venous nutrient solution, so that the working pressure of nursing staff is relieved.

The automatic liquid stopping membrane is specially designed for intravenous nutrient solution infusion, and enteral nutrient solution is thicker than intravenous nutrient solution and is difficult to flow or has very slow flow rate through the automatic liquid stopping membrane. At present, in clinic, nurses manually exhaust the enteral nutrient solution, and each exhaust needs at least 5 minutes, so that the workload of the nurses is greatly increased. In the prior art, an infusion apparatus for nutrient solution specially designed for enteral nutrient solution does not exist, and the functions of automatic liquid stopping and liquid medicine filtering can be realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide a nutrient solution infusion pipe that nutrition was used in the confession intestines that can realize automatic end liquid and liquid medicine filtering capability.

The utility model aims at the above-mentioned problem, provide a can realize that automatic end liquid and liquid medicine filtering capability's the filter that supplies nutrition to use in intestines.

In order to achieve the above purpose, the utility model adopts the following technical proposal: this filter of nutrient solution infusion pipe includes the shell body, is provided with filtration membrane in the shell body, and filtration membrane divide into first cavity and second cavity with the shell body inner chamber, offers the first interface that is linked together with first cavity on the shell body, still offers the second interface that is linked together with the second cavity on the shell body, and filtration membrane is variable aperture membrane.

In the above filter for a nutrient solution infusion tube, the pore size of the variable pore size membrane may vary from 40 μm to 100 μm.

In the filter of the nutrient solution infusion tube, the material of the variable pore size membrane is an elastic material.

In the above-described filter for a nutrient solution infusion tube, the middle portion of the variable pore size membrane protrudes upward to form a dome shape.

In the filter of the nutrient solution infusion pipe, the outer shell is provided with an exhaust device, and the first cavity is communicated with the outside through the exhaust device.

Be provided with nutrient solution infusion pipe of above-mentioned filter, including the body, the one end of body is equipped with the nutrient solution and connects, and the other end of body is equipped with the stomach tube and connects, still is provided with the filter on the body.

In the above nutrient solution infusion tube, the tube body comprises an upper tube and a lower tube, the first connector of the filter is connected with the upper tube, and the second connector of the filter is connected with the lower tube.

In the nutrient solution infusion tube, a dropping funnel is further arranged on the tube body, and the filter is located between the nutrient solution joint and the dropping funnel.

In the nutrient solution infusion tube, the tube body is further provided with an air filter, and the air filter is positioned between the dropping funnel and the stomach tube connector.

Compared with the prior art, the nutrient solution infusion tube and the filter thereof have the advantages that: when the nutrient solution is in a conveying state, the pressure on the upper part and the lower part of the elastic microporous membrane is approximately kept flat, and the nutrient solution passes through the membrane pores of the elastic microporous membrane. When the nutrient solution is conveyed, the pressure on the lower part of the elastic microporous membrane is greater than the pressure on the upper part of the elastic microporous membrane, the elastic microporous membrane is pressed to protrude upwards, the lower end of the membrane hole is reduced, and the nutrient solution cannot continuously pass through the membrane hole, so that the function of automatically stopping the solution is achieved. Collect automatic end liquid and liquid medicine filter two functions as an organic whole, when nutrient solution infusion process was accomplished, keep the liquid level not descend for a long time at the assigned position, avoid the air to get into the stomach automatically, and follow-up need not exhaust again to alleviate nursing staff's operating pressure.

Drawings

Fig. 1 is a schematic structural view of a nutrient solution infusion tube provided by the present invention.

Fig. 2 is a cross-sectional view of a filter provided by the present invention.

Fig. 3 is a partially enlarged view of the filtering membrane provided by the present invention in an initial state.

Fig. 4 is a partial enlarged view of the filtration membrane provided by the present invention in a nutrient solution delivery state.

Fig. 5 is a partial enlarged view of the filtration membrane provided by the present invention at the completion of nutrient delivery.

In the figure, an outer shell 1, a filter membrane 2, a first cavity 3, a second cavity 4, a first interface 5, a second interface 6, an exhaust device 7, a pipe body 8, a nutrient solution connector 9, a stomach tube connector 10, a filter 11, an upper pipe 12, a lower pipe 13, a dropping funnel 14, an air filter 15, an elastic microporous membrane 16, a membrane hole 17, an upper liquid column 18 and a lower liquid column 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Example 1

As shown in fig. 1-5, the filter of the nutrient solution infusion tube comprises an outer shell 1, a filtering membrane 2 is arranged in the outer shell 1, the inner cavity of the outer shell 1 is divided into a first cavity 3 and a second cavity 4 by the filtering membrane 2, a first interface 5 communicated with the first cavity 3 is arranged on the outer shell 1, a second interface 6 communicated with the second cavity 4 is also arranged on the outer shell 1, and the filtering membrane 2 is a variable-aperture membrane. The variable pore size membrane is a membrane whose pore size or permeation channel can be controllably changed according to the change of external conditions. The variable pore size membrane in this embodiment is an elastic microporous membrane 16. When the nutrient solution is in a conveying state, the upper part of the elastic microporous membrane 16 is pressed by the upper liquid column 18, the lower part of the elastic microporous membrane 16 is pressed by the lower liquid column 19, at the moment, the pressure on the upper part and the lower part of the elastic microporous membrane 16 is approximately equal, and the nutrient solution passes through the membrane pores 17 of the elastic microporous membrane 16. When the nutrient solution is to be conveyed, the tube body 8 positioned on the upper part of the elastic microporous membrane 16 is in a vacuum state, the nutrient solution is stored in the tube body 8 positioned on the lower part of the elastic microporous membrane 16, at the moment, the pressure on the lower part of the elastic microporous membrane 16 is greater than the pressure on the upper part of the elastic microporous membrane, the elastic microporous membrane 16 is pressed to protrude upwards, the lower end of the membrane hole 17 is reduced, and the nutrient solution cannot continuously pass through the membrane hole 17, so that the function of automatically stopping the solution is achieved. This filter collects automatic end liquid promptly and liquid medicine filters two functions as an organic whole, when nutrient solution infusion process is accomplished, keeps the liquid level not descend for a long time at the assigned position, avoids the air admission stomach automatically, and follow-up need not exhaust again to alleviate nursing staff's operating pressure.

Further, the pore size of the variable pore size membrane varies in a range of 40 μm to 100 μm. That is, when the pore diameter of the elastic microporous membrane 16 is 40 μm, the nutrient solution cannot smoothly flow down from the elastic microporous membrane 16, thereby performing an automatic liquid stopping function, and when the pore diameter of the elastic microporous membrane 16 is 100 μm, the nutrient solution can very smoothly flow down from the elastic microporous membrane 16, the molecular weight of the basic components in the nutrient solution is larger than that of the basic components in the venous nutrient solution, and the elastic microporous membrane 16 can filter out larger impurities, thereby performing a filtering function.

The elastic microporous membrane 16 is made of an elastic material, i.e., a polymer with elasticity. When the elastic microporous film 16 is not pressed, its middle portion is upwardly projected to form a dome shape. The nutrient solution is pumped into the tube body 8 by a special pump, actually, the pressure on the upper part of the elastic microporous membrane 16 is greater than the pressure on the lower part of the elastic microporous membrane 16, the elastic microporous membrane 16 in an initial state is dome-shaped, and the membrane hole 17 of the elastic microporous membrane is of a structure with a large upper end and a small lower end. When the nutrient solution is pumped, the elastic microporous membrane 16 is subjected to certain impact force, the membrane pores 17 become larger, and the nutrient solution can smoothly pass through. When the nutrient solution infusion process is finished, the upper part of the elastic microporous membrane 16 is in a vacuum state, and the lower ends of the membrane holes 17 can be shrunk only by a small pressure difference, so that the nutrient solution cannot pass through, and a good automatic liquid stopping effect is achieved.

An exhaust device 7 is arranged on the outer shell 1, and the first cavity 3 is communicated with the outside through the exhaust device 7. The nutrient solution entering the outer shell 1 is exhausted through the exhaust device 7, so that the gas entering the stomach of the human body is reduced.

Example 2

The nutrient solution infusion tube provided with the filter in embodiment 1 comprises a tube body 8, wherein one end of the tube body 8 is provided with a nutrient solution connector 9, the other end of the tube body 8 is provided with a stomach tube connector 10, and the tube body 8 is further provided with a filter 11. The tube 8 comprises an upper tube 12 and a lower tube 13, the first port 5 of the filter 11 is connected to the upper tube 12, and the second port 6 of the filter 11 is connected to the lower tube 13. A dropping funnel 14 is further arranged on the pipe body 8, and a filter 11 is positioned between the nutrient solution joint 9 and the dropping funnel 14. An air filter 15 is further arranged on the tube body 8, and the air filter 15 is positioned between the drip chamber 14 and the stomach tube connector 10.

The working principle of the nutrient solution infusion tube is as follows: connect 9 nutrient solution bags with the nutrient solution, the stomach tube connects 10 and connects the stomach tube, nutrient solution in the nutrient solution bag flows into body 8, first interface 5 through filter 11 flows into first cavity 3, nutrient solution exhausts through exhaust apparatus 7 in first cavity 3, then filters through variable aperture membrane, enters into second cavity 4 after filtering, then enters into drip chamber 14 along body 8, enters into the stomach tube along body 8 at last.

The specific embodiments described herein are merely illustrative of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.

Although terms are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being contrary to the present invention in any manner whatsoever.

Claims

1. The utility model provides a filter of nutrient solution infusion pipe, includes shell body (1), be provided with filtration membrane (2) in shell body (1), filtration membrane (2) divide into first cavity (3) and second cavity (4) with shell body (1) inner chamber, set up first interface (5) that are linked together with first cavity (3) on shell body (1), still set up second interface (6) that are linked together with second cavity (4) on shell body (1), its characterized in that, filtration membrane (2) are variable aperture membrane.

2. The nutrient solution infusion tube filter of claim 1, wherein the variable pore size membrane has a pore size ranging from 40 μ ι η to 100 μ ι η.

3. The nutrient infusion tube filter of claim 1, wherein the material of the variable pore size membrane is an elastomeric material.

4. The nutrient infusion tube filter of claim 1, wherein the variable pore size membrane has a domed shape with a middle portion projecting upward.

5. The filter of the nutrient solution infusion line according to claim 1, characterized in that the outer casing (1) is provided with a vent (7), the first cavity (3) being in communication with the outside through the vent (7).

6. A nutrient solution infusion tube provided with a filter according to claim 1 or 2 or 3 or 4 or 5, comprising a tube body (8), one end of the tube body (8) being provided with a nutrient solution connector (9), the other end of the tube body (8) being provided with a gastric tube connector (10), characterized in that the tube body (8) is further provided with a filter (11).

7. The nutrient solution infusion tube according to claim 6, characterized in that the tubular body (8) comprises an upper tube (12) and a lower tube (13), the first mouth (5) of the filter (11) being connected to the upper tube (12) and the second mouth (6) of the filter (11) being connected to the lower tube (13).

8. The nutrient solution infusion tube according to claim 7, wherein a drip chamber (14) is further provided on the tube body (8), and the filter (11) is located between the nutrient solution connector (9) and the drip chamber (14).

9. The nutrient solution infusion tube according to claim 8, characterized in that an air filter (15) is further provided on the tube body (8), the air filter (15) being located between the drip chamber (14) and the gastric tube fitting (10).