CN111728864B - Weak welding spot type infusion bag with pressure relief function - Google Patents

Abstract

The present invention discloses a weak welding point type infusion bag with a pressure relief function, which belongs to the technical field of infusion bags. It includes a bag body, wherein a containing cavity is provided in the bag body; a weak welding rod is arranged on the bag body, and the containing cavity is divided into a plurality of chambers for containing liquid or powder, and two adjacent chambers are separated by two weak welding rods; a buffer cavity is arranged between the two weak welding rods, and the containing cavity is vacuumized; a weak welding point, wherein the weak welding point is arranged on the bag body in the buffer cavity; a mouth tube, an easy-folding cover, wherein the easy-folding cover is sealed and connected to the mouth tube in a one-to-one correspondence; the mouth tube and the easy-folding cover are integrally formed; a tail filling part, wherein the tail filling part is arranged on the side wall of the bag body opposite to the mouth tube, and before filling, the tail filling part is connected to the chamber, and after canning, the two side walls of the bag body of the tail filling part are welded and sealed. By arranging the buffer cavity and the weak welding point, the probability of the infusion bag being opened in an unexpected situation can be further reduced.

Description

A weak welding point infusion bag with pressure relief function

Technical Field

The present invention relates to the technical field of infusion bags, and more particularly to a weak-weld-point infusion bag with a pressure relief function.

Background Art

Nutritional infusion has received more and more attention in clinical applications in recent years, especially for critically ill patients or patients undergoing surgery, who need timely nutritional supplements to recover better. Existing nutritional infusion products mainly include glucose, amino acids, fat emulsions, etc., and their packaging methods are mainly: single-bag glass bottles, single-bag soft bag products, among which glass bottles are the main ones. The nutrition needed by the human body cannot be met by a single product alone, but requires the cooperation of multiple nutrients to meet the needs of the human body.

In the prior art, different nutrient solutions are separately contained in different bottles, and each bottle has an aluminum-gel combination infusion port at its mouth. If a patient needs two nutrient solutions to meet his biological needs, the medical staff will use a syringe to draw the required nutrient solution from the aluminum-gel combination infusion port of a bottle containing nutrient solution into the syringe according to the formula quantity requirements, and then inject it into another large bottle of nutrient solution. This process is repeated many times to transfer one nutrient solution to another, and then manually shaken to mix it into a mixed nutrient solution. After mixing evenly, put it into the bottle ring, hang it on the infusion stand, and use an infusion set to infuse it into the human body. It has the following disadvantages:

The existing bottles for nutrient solution are all glass infusion bottles, which are packaged separately according to types and specifications. A large number of packaging materials are used, and the packaging materials are easily damaged if they are improperly used during transportation or use.

The aluminum-gel combination infusion and addition port used in the existing solution requires the plastic cover to be removed before use, and then the rubber plug is disinfected. In addition, both infusion and addition are performed through the same place. After multiple punctures, the rubber plug will peel off and puncture leakage will occur, which poses a certain risk of use.

In order to achieve a balanced nutritional formula to meet the needs of patients, it is necessary to extract the first nutrient solution into the second nutrient solution multiple times and then mix them. The operation steps are cumbersome and complicated, the number of operations will increase exponentially, the risk will further increase, and it may also cause risks, and a separate preparation center is required.

In the prior art, an infusion bag is disclosed, on which a one-piece tear-away isolation strip is provided. When not in use, the one-piece tear-away isolation strip can separate the infusion bag into separate chambers, so that each chamber can be filled with different medicines. When in use, the one-piece tear-away isolation strip is opened so that different medicines in each chamber can be mixed together for use, thereby solving the above-mentioned technical problem of mixing in glass bottles.

However, the inventors of the present application discovered that in the prior art, the infusion bag with an integrated tear-away isolation strip has chambers separated by only one integrated tear-away isolation strip. When the medicines in the infusion bag are being transported, dropped, or impacted, the single integrated tear-away isolation strip is prone to being accidentally opened, thereby causing the medicines in different chambers to be mixed before use, resulting in a technical problem that the efficacy of the medicines cannot achieve the optimal effect.

At the same time, the infusion bag is of positive filling type, that is, both filling and infusion are carried out from one mouth tube. The bag is first filled through the mouth tube, and after the filling is completed, the combined cover is welded to the mouth tube. During welding, there is a risk that welding debris will fall from the mouth tube into the medicine solution in the chamber.

Summary of the invention

The purpose of the present invention is to provide a weak welding point type infusion bag with a pressure relief function, in order to solve the technical problems existing in the background technology.

In order to achieve the above object, the present invention adopts the following technical solutions:

A weak welding point infusion bag with a pressure relief function comprises a bag body, wherein a containing cavity is provided in the bag body; a weak welding rod is arranged on the bag body to divide the containing cavity into a plurality of chambers for containing liquid or powder, and adjacent chambers are separated by two weak welding rods; two weak welding rods are arranged in parallel, and a buffer cavity is arranged between the two weak welding rods, and the containing cavity is vacuumed; a weak welding point, wherein the weak welding point is arranged on the bag body in the buffer cavity; a mouth tube, wherein the number of the mouth tubes corresponds to the number of the chambers in a one-to-one manner, the mouth tubes are arranged on the bag body, and the mouth tubes are connected to the chambers in a one-to-one manner; an easy-folding cover, wherein the number of the easy-folding cover corresponds to the number of the mouth tubes in a one-to-one manner, and the easy-folding cover is sealed and connected to the mouth tube in a one-to-one manner; the mouth tube and the easy-folding cover are integrally formed; a tail filling part, wherein the tail filling part is arranged on the side wall of the bag body opposite to the mouth tube, and before filling, the tail filling part is connected to the chamber, and after canning, the two side walls of the bag body of the tail filling part are welded and sealed.

Further, the weak welding point is an easy-to-tear isolation point formed by welding between the two side walls of the bag body, and the welding force between the easy-to-tear isolation point and the bag body is less than the pulling force when the two side walls of the bag body are pulled apart in opposite directions. The weak welding point is set to play a buffering role, that is, when the weak welding rod on one side is opened in a non-use state due to accidental conditions such as falling from a high altitude, impact, etc., the liquid or powder in the weak welding rod on the open side will flow into the buffer cavity, thereby playing a role of pressure relief, that is, minimizing the influence of the pressure on the weak welding rod on the other side as much as possible, and preventing the weak welding rods on both sides from being opened in a non-use state. The weak welding point is set in the buffer cavity to play the role of the first pressure relief, that is, when it is opened in a non-use state, the liquid or powder in the weak welding rod on the open side flows into the buffer cavity, and it takes a part of energy to open the weak welding point, thereby completing the release of part of the accidental pressure, and minimizing its influence on the weak welding rod on the other side.

Furthermore, the weak welding rod is a tearable isolation strip formed by welding between the two side walls of the bag body, and the welding force between the tearable isolation strip and the bag body is smaller than the pressure between the tearable isolation strip and the bag body when the bag body is curled and pressed along the length direction of the tearable isolation strip.

Furthermore, the welding pattern of the tearable isolation strip is a plurality of diamond-shaped welding patterns. The diamond-shaped welding patterns can not only completely seal the liquid between the chambers, but also buffer the impact between the chambers and resist the impact of falling, especially the impact during transportation. The diamond-shaped welding patterns further improve the sealing quality between the chambers, and can reduce the extrusion deformation between the film materials, thereby maximizing the aesthetics of the bag.

Furthermore, the tail filling part is provided with a hanging hole.

Furthermore, first hand-holding holes are provided on the bag bodies at both sides of the tail filling part.

Furthermore, the bag body is provided with a bag head body on one side of the bag body provided with the mouth tube, and the bag head body is provided with a plurality of second hand-holding holes, and the second hand-holding holes are distributed on the bag head body on both sides of the mouth tube.

Furthermore, a leak-proof isolation layer is arranged around the bag body.

Furthermore, the four top corners of the bag body are provided with rounded corners.

Furthermore, the bag body is provided with a bag tail body on a side opposite to the mouth tube, and the bag tail body is provided with a hanging hole.

Furthermore, a plurality of first hand-holding holes are provided on the bag tail body, and the first hand-holding holes are distributed on both sides of the hanging hole. The first hand-holding holes can provide the operator with a better operating experience. It is convenient to take and place. When taking and placing the infusion bag, the chamber will not be directly held by hand, thereby reducing the frequency of squeezing the weak welding rod between the chambers when not opened, and reducing the probability of abnormal opening.

Furthermore, the bag tail body is arc-shaped on the side opposite to the mouth tube. The arc-shaped bag tail body can be convenient for the curled bag tail body to squeeze two weak welding rods when opening, so as to facilitate the smooth opening of the weak welding rods.

Furthermore, the bag body is provided with a bag head body on the side provided with the mouth tube, and the bag head body is provided with a plurality of second hand-holding holes, and the second hand-holding holes are distributed on the bag head body on both sides of the mouth tube. The second hand-holding holes can provide a better operating experience for the operator. It is convenient to take and place. When taking and placing the infusion bag, the chamber will not be directly held by hand, thereby reducing the frequency of squeezing the weak welding rod between the chambers when not opened, and reducing the probability of abnormal opening.

Furthermore, a leakproof isolation layer is arranged around the bag body, which can decorate the bag body and make it more beautiful, and can also provide a second leakproof protection for the bag body, thereby further improving the quality of the bag body.

Furthermore, the four top corners of the bag body are provided with rounded corners, which can protect the bag body after filling, reduce the damage of the welding part caused by the excessive impact force of the liquid or powder, and maximize the product quality, and have a more mechanical aesthetic.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention has a novel structure and strong practicality. Two weak welding rods are arranged on the bag body, which plays a double insurance role. Even if a single weak welding rod is opened under abnormal circumstances, the liquid or powder contained in the two chambers will not be mixed during abnormal use. The safety of medication is greatly improved. In addition, the infusion bag with weak welding rods provided by the present invention is more convenient to open.

2. By setting up a buffer cavity and a weak welding point, the probability of the infusion bag being opened in unexpected situations (such as transportation bumps, high-altitude falls, impacts, etc.) can be further reduced.

3. The infusion bag provided by the present invention is filled in the form of tail filling, so there is no need to worry about welding debris falling into the chamber.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a weak-weld-point infusion bag with a pressure relief function according to the present invention.

Markings in the figure: 1-bag body, 2-chamber, 3-weak welding rod, 4-weak welding point, 5-buffer cavity, 6-mouth tube, 7-easy-folding cover, 8-second hand-holding hole, 9-first hand-holding hole, 10-leakage-proof isolation layer, 11-tail filling part, 12-hanging hole.

DETAILED DESCRIPTION

The present invention is further described below in conjunction with embodiments, which are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in the field without creative work are all within the scope of protection of the present invention.

Embodiment 1:

As shown in FIG1 , a weak welding point type infusion bag with a pressure relief function comprises a bag body 1, wherein the bag body 1 is provided with a containing cavity; a weak welding rod 3, which is arranged on the bag body 1, and divides the containing cavity into a plurality of chambers 2 for containing liquid or powder, and the adjacent chambers 2 are separated by two weak welding rods 3; two weak welding rods 3 are arranged in parallel, and a buffer cavity 5 is arranged between the two weak welding rods 3, and the containing cavity is vacuumized; a weak welding point 4, which is arranged on the bag body 1 in the buffer cavity 5; and a port tube 6, the number of which is the same as that of the port tube 6. The number of the chambers 2 corresponds one to one, the mouth tubes 6 are arranged on the bag body 1, and the mouth tubes 6 are connected to the chambers 2 in a one-to-one manner; the foldable covers 7, the number of the foldable covers 7 corresponds one to one to the number of the mouth tubes 6, and the foldable covers 7 are sealed and connected to the mouth tubes 6 in a one-to-one manner; the mouth tubes 6 and the foldable covers 7 are integrally formed; the tail filling part 11, the tail filling part 11 is arranged on the side wall of the bag body 1 opposite to the mouth tube 6, before filling, the tail filling part 11 is connected to the chamber 2, and after canning, the two side walls of the bag body 1 of the tail filling part 11 are welded and sealed.

The weak welding rod 3 provided by the present invention is an easily-tearable isolation strip formed by welding between the two side walls of the bag body 1, and the welding force between the easily-tearable isolation strip and the bag body 1 is smaller than the pressure between the easily-tearable isolation strip and the bag body 1 when the bag body 1 is curled and pressed along the length direction of the easily-tearable isolation strip.

The present invention has a novel structure and strong practicality. The present invention sets two weak welding rods 3 on the bag body 1, that is, the two chambers 2 are separated by two weak welding rods 3. When encountering abnormal opening situations, such as accidental pressing of the chamber 2, impact of the infusion bag, falling from a high altitude, etc., the two weak welding rods 3 are set up, which plays a double insurance role. Even if a single weak welding rod 3 is opened under abnormal circumstances, the liquid or powder contained in the two chambers 2 will not be mixed during abnormal use. The safety of medication is greatly improved. And the infusion bag with weak welding rods 3 provided by the present invention is more convenient to open.

The two weak welding rods 3 of the present invention are arranged in parallel, so that they can be opened smoothly and conveniently in a curled manner when opened. At the same time, the buffer cavity 5 between the two weak welding rods 3 can provide a pressure relief space, that is, when one weak welding rod 3 is opened under abnormal circumstances, the liquid or powder in the chamber 2 on the opened side can partially overflow into the buffer buckle cavity to offset the pressure caused by some external misoperation. At the same time, it can also avoid the situation where the liquid or powder between the two chambers 2 is mixed when a single weak welding rod 3 is opened abnormally.

Of course, the present invention also provides a weak welding point 4 in the buffer cavity 5, and the weak welding point 4 is an easy-tear isolation point formed by welding between the two side walls of the bag body 1, and the welding force between the easy-tear isolation point and the bag body 1 is less than the pulling force when the two side walls of the bag body 1 are pulled apart in opposite directions. Preferably, a row of weak welding points 4 is provided in the buffer cavity 5, and a plurality of weak welding points 4 are provided at equal intervals.

The weak welding spot 4 is provided to play a buffering role, that is, when the weak welding rod 3 on one side is opened in a non-use state due to an accidental fall from a high altitude, collision, etc., the liquid or powder in the weak welding rod 3 on the opened side will flow into the buffer cavity 5, thereby playing a role of pressure relief, that is, minimizing the influence of the pressure on the weak welding rod 3 on the other side as much as possible, and preventing the weak welding rods 3 on both sides from being opened in a non-use state. The weak welding spot 4 is provided in the buffer cavity 5 to play the role of the first pressure relief, that is, when opened in a non-use state, the liquid or powder in the weak welding rod 3 on the opened side flows into the buffer cavity 5, and it takes a part of energy to open the weak welding spot 4, thereby completing the release of part of the accidental pressure, and minimizing its influence on the weak welding rod 3 on the other side.

Before opening, each chamber 2 is in an independent separation state. When you want to use the infusion bag of the present invention, curl and press from the tail of the bag body 1 along the length direction of the weak welding rod 3. When it is rolled and pressed to the front end, squeeze it again, and the weak welding rod 3 will be torn from the contact point between it and the front end of the bag body 1. You can also change the direction and curl and press from the head of the bag body 1 along the length direction of the weak welding rod 3, squeeze the weak welding rod 3 in turn or hold the bag body 1 with both hands and tear it towards both sides of the weak welding rod 3 until the weak welding rod 3 is completely opened. After opening the weak welding rod 3, pull the two side walls of the bag body 1 in opposite directions to tear the weak welding point 4. At this point, the weak welding part between the two side walls of the bag body 1 is completely opened, and the liquid or solid in the two chambers 2 is shaken and mixed.

The above process is relatively convenient to operate, and it only takes a few seconds to open the product and complete the compatibility between the medicine solutions in each chamber 2. The overall process can effectively avoid the problem of cross contamination caused by mixing medicines in glass bottles, effectively ensuring the effectiveness and safety of infusion; it can also solve the problem that the existing infusion bag with a single tear-away isolation strip is easy to open the tear-away isolation strip when not in use.

This method has a simple structure, adopts a soft packaging method, and is easy to operate as it can be opened and mixed immediately. It has a wider range of applications, higher reliability, and can enhance the image of corporate products, bringing great economic benefits.

The infusion bag provided by the present invention is filled in the form of tail filling, that is, the chamber 2 is filled through the tail filling part 11 of the bag body 1, and the filling is not done from the mouth tube 6. Therefore, the mouth tube 6 and the foldable cover 7 are produced in one piece, and there will be no situation where the end face of the mouth tube 6 and the end face of the combined cover are welded after the liquid medicine is filled. Instead, the filling is done from the tail filling part 11 of the bag body 1. After filling, the tail filling part 11 is directly welded and sealed using a welding mold. The welding seal here is on both sides of the bag body 1 and the tail filling part 11, and the welding mold will not extend into the interior thereof. Therefore, there is no need to worry about welding debris falling into the chamber 2.

Embodiment 2:

As shown in Figure 1, this embodiment is further optimized on the basis of Example 1. This embodiment focuses on the improvements compared with Example 1, and the similarities are not repeated. In this embodiment, the welding pattern of the tearable isolation strip is a plurality of diamond-shaped welding patterns. The diamond-shaped welding patterns can not only completely seal the liquid between the chambers 2, but also buffer the impact force between the chambers 2 and resist the impact force of falling, especially the impact force during transportation. It can only be opened by the operator when it is needed. The diamond-shaped welding patterns further improve the sealing quality between the chambers 2, and can reduce the extrusion deformation between the film materials, thereby maximizing the aesthetics of the bag body 1.

Embodiment 3:

As shown in Figure 1, this embodiment is further optimized on the basis of Example 1. This embodiment focuses on the improvements compared with Example 1, and the similarities are not repeated. In this embodiment, the tail filling part 11 is provided with a hanging hole 12. The bag body 1 on both sides of the tail filling part 11 is provided with a first hand-held hole 9. The first hand-held hole 9 is provided to give the operator a better operating experience. It is convenient to take and place. When taking and placing the infusion bag, the chamber 2 will not be directly held by hand, thereby reducing the frequency of squeezing the weak welding rod 3 between the chamber 2 and the chamber 2 when it is not opened, and reducing the probability of abnormal opening.

Embodiment 4:

As shown in FIG1 , this embodiment is further optimized on the basis of Example 1. This embodiment focuses on the improvements compared with Example 1, and the similarities are not repeated. In this embodiment, the bag body 1 is provided with a bag head body on the side provided with the mouth tube 6, and the bag head body is provided with a plurality of second hand-holding holes 8, and the second hand-holding holes 8 are distributed on the bag head body on both sides of the mouth tube 6. The second hand-holding holes 8 are provided to bring a better operating experience to the operator. It is convenient to take and place. When taking and placing the infusion bag, the chamber 2 will not be directly held by hand, thereby reducing the frequency of squeezing the chamber 2 and the weak welding rod 3 between the chamber 2 when it is not opened, and reducing the probability of abnormal opening.

Embodiment 5:

As shown in FIG1 , this embodiment is further optimized on the basis of Example 1. This embodiment focuses on the improvements compared with Example 1, and the similarities are not repeated. In this embodiment, a leakproof isolation layer 10 is arranged around the bag body 1. The leakproof isolation layer 10 can decorate the bag body 1 and also provide a second leakproof protection for the bag body 1, thereby further improving the quality of the bag body 1.

Embodiment 6:

As shown in FIG1 , this embodiment is further optimized on the basis of Example 1. This embodiment focuses on the improvements compared with Example 1, and the similarities are not repeated. In this embodiment, the four top corners of the bag body 1 are provided with rounded corners. The rounded corners can protect the bag body 1 after filling, reduce the impact force of the liquid or powder, and cause damage to the welding part, thereby maximizing the product quality and making it more mechanically beautiful.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A weak welding spot type infusion bag with a pressure relief function is characterized in that: comprises a bag body (1), wherein a containing cavity is arranged in the bag body (1); the weak welding rods (3) are arranged on the bag body (1) to divide the accommodating cavity into a plurality of chambers (2) for accommodating liquid or powder, and the adjacent chambers (2) are separated by the two weak welding rods (3); the two weak welding rods (3) are arranged in parallel, a buffer cavity (5) is arranged between the two weak welding rods (3), and the buffer cavity (5) is internally vacuumized; the weak welding points (4) are arranged on the bag body (1) in the buffer cavity (5); the number of the mouth pipes (6) is in one-to-one correspondence with the number of the chambers (2), the mouth pipes (6) are arranged on the bag body (1), and the mouth pipes (6) are communicated with the chambers (2) in one-to-one correspondence; the easy-to-fold covers (7), the number of the easy-to-fold covers (7) corresponds to the number of the mouth pipes (6) one by one, and the easy-to-fold covers (7) are connected to the mouth pipes (6) in a sealing manner one by one; the mouth tube (6) and the easy-to-fold cover (7) are integrally formed; the tail filling part (11) is arranged on the side wall of the bag body (1) opposite to the mouth tube (6), the tail filling part (11) is communicated with the cavity (2) before filling, and after filling, the two side walls of the bag body (1) of the tail filling part (11) are welded and sealed;

the weak welding points (4) are easy-tearing isolation points formed by welding between the two side walls of the bag body (1), and the welding force between the easy-tearing isolation points and the bag body (1) is smaller than the tensile force applied when the two side walls of the bag body (1) are pulled away in opposite directions;

the periphery of the bag body (1) is provided with a leakage-proof isolation layer (10).

2. The weak spot infusion bag with pressure relief function according to claim 1, wherein: the weak welding rod (3) is an easy-to-tear isolation strip formed by welding between two side walls of the bag body (1), and the welding force between the easy-to-tear isolation strip and the bag body (1) is smaller than the pressure applied between the easy-to-tear isolation strip and the bag body (1) when the bag body (1) is curled and pressed along the length direction of the easy-to-tear isolation strip.

3. The weak spot infusion bag with pressure relief function according to claim 2, wherein: the welding patterns of the easy-to-tear isolating strips are a plurality of diamond welding patterns.

4. The weak spot infusion bag with pressure relief function according to claim 1, wherein: hanging holes (12) are formed in the tail irrigation part (11).

5. The weak spot infusion bag with pressure relief function according to claim 4, wherein: the bag bodies (1) on two sides of the tail irrigation part (11) are provided with first handheld holes (9).

6. The weak spot infusion bag with pressure relief function according to claim 1, wherein: the bag body (1) is provided with a bag head body at one side provided with the mouth tube (6), a plurality of second hand-held holes (8) are formed in the bag head body, and the second hand-held holes (8) are distributed on the bag head body at two sides of the mouth tube (6).

7. The weak spot infusion bag with pressure relief function according to claim 1, wherein: four vertex angles of the bag body (1) are provided with rounding angles.