CN218474731U

CN218474731U - Blood storage bag with sterility and backflow prevention

Info

Publication number: CN218474731U
Application number: CN202220991425.3U
Authority: CN
Inventors: 周德健; 张金保
Original assignee: Zhejiang Free Trade Zone Maishun Biotechnology Co ltd
Current assignee: Zhejiang Free Trade Zone Maishun Biotechnology Co ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2023-02-14
Anticipated expiration: 2032-04-26

Abstract

The utility model relates to the technical field of blood sampling devices, in particular to an aseptic and backflow-preventing blood storage bag, the upper end of the aseptic bag is connected with a filling pipe, the upper end of the filling pipe is fixedly provided with a connecting pipe, the lower end of a medicine bag is fixedly provided with a plug, a liquid through cavity is arranged in the plug, the top of the plug is provided with a liquid inlet hole for communicating the medicine bag and the liquid through cavity, the bottom of the plug is provided with a liquid outlet hole for communicating the liquid through cavity, a first blocking ball for sealing the liquid outlet hole is arranged in the liquid through cavity, a first spring is connected between the top wall of the liquid through cavity and the first blocking ball, and a mandril for pushing the first blocking ball to move upwards is arranged in the connecting pipe; after the blood maintenance liquid and the collected blood are filled in proportion, if the maintenance liquid remains in the medicine bag, the plug is screwed off from the filling pipe, after the ejector rod is separated from the first blocking ball, the elastic force of the first spring enables the first blocking ball to block the liquid outlet hole again, so that the residual blood maintenance liquid in the medicine bag is prevented from leaking, and the residual blood maintenance liquid can be reused.

Description

Blood storage bag with sterile and backflow-preventing functions

Technical Field

The utility model relates to a blood sampling device technical field, concretely relates to aseptic and prevent blood storage bag of backward flow.

Background

After the blood is separated from the human body, if the blood is not treated urgently, the blood can be rapidly coagulated, so that various cell components in the blood can lose activity. In the prior art, a blood maintenance solution is filled in a blood collection bag to protect collected blood.

The utility model patent with the application number of CN201720639442.X discloses a blood sampling device, which comprises a bag body, wherein the bag body is connected with a blood sampling tube and a blood transfusion tube, and also comprises a connecting tube and a medicine bag for containing blood maintenance liquid, the medicine bag is connected with the bag body through the connecting tube, and a one-way valve which is communicated from the medicine bag to the bag body is arranged in the connecting tube; the bag body and the medicine bag are both provided with scale marks; the effect of proportioning the blood maintenance liquid and the collected blood in proportion is realized through the medicine bag and the corresponding scale marks, so that the subsequent storage and use of the blood are facilitated. The blood collection device may have the following disadvantages: after the maintenance liquid is added, if the medicine bag is taken down or replaced, the connecting pipe exposed in the environment is polluted, and bacteria can possibly enter the bag body from the connecting pipe; in addition, because the one-way valve is arranged in the connecting pipe, if blood maintenance liquid remains in the medicine bag, the remaining blood maintenance liquid can overflow when the medicine bag is replaced or taken down, so that the bag body or the connecting pipe is polluted; meanwhile, only the one-way valve is arranged in the connecting pipe, and when the bag body is pressed by a large force, blood in the bag body can flow back to the medicine bag.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a blood storage bag that is aseptic and prevent backward flow is provided, can be when taking off the anther sac, the export of shutoff anther sac and connecting pipe prevents that remaining maintenance liquid from leaking in the anther sac, avoids the connecting pipe exit to receive environmental pollution, avoids blood to get into the anther sac, effectively improves the utilization ratio of maintenance liquid.

In order to solve the technical problem, the technical scheme of the utility model is that: an aseptic and backflow-preventing blood storage bag comprises an aseptic bag, wherein the upper end of the aseptic bag is connected with a blood collection tube and a blood transfusion tube, the upper end of the aseptic bag is also connected with a filling tube, the aseptic bag also comprises a medicine bag, the upper end of the filling tube is fixedly provided with a connecting tube, the lower end of the medicine bag is fixedly provided with a plug, the plug is in a hollow cylindrical shape, the outer side of the plug is provided with external threads, and the upper end of the connecting tube is internally provided with internal threads matched with the external threads of the plug; be equipped with logical sap cavity in the plug, the top of plug is equipped with the intercommunication the anther sac with the feed liquor hole that leads to the sap cavity, the bottom of plug is equipped with the intercommunication the play liquid hole that leads to the sap cavity, it is used for with to lead to the sap cavity in the first shutoff ball of liquid hole confined, the roof that leads to the sap cavity with be connected with first spring between the first shutoff ball, be equipped with in the connecting pipe and be used for promoting the ejector pin that first shutoff ball shifted up, the ejector pin passes through connecting plate fixed mounting be in on the inner wall of connecting pipe.

As a further improvement, fixed mounting has to be located in the connecting tube the shutoff board of the below of ejector pin, be equipped with the through-liquid hole on the shutoff board, the below of shutoff board be equipped with be used for with through-liquid hole confined second shutoff ball, be equipped with annular supporting part on the inner wall of connecting tube, the supporting part is located the below of second shutoff ball, the supporting part with be connected with the second spring between the second shutoff ball.

As a further improvement, the device further comprises a first plugging cap matched with the upper end of the connecting pipe, wherein an external thread is arranged on the outer side of the upper end of the connecting pipe, and an internal thread matched with the external thread of the connecting pipe is arranged in the first plugging cap.

As a further improvement, the plug further comprises a second plugging cap matched with the lower end of the plug, and an internal thread matched with the external thread of the plug is arranged in the second plugging cap.

As a further improvement, the sterile bag and the medicine bag are respectively provided with scale marks.

Due to the adoption of the technical scheme, the blood storage bag which is sterile and prevents backflow comprises a sterile bag, wherein the upper end of the sterile bag is connected with a filling pipe, the blood storage bag also comprises a medicine bag, the upper end of the filling pipe is fixedly provided with a connecting pipe, the lower end of the medicine bag is fixedly provided with a plug, a liquid through cavity is arranged in the plug, the top of the plug is provided with a liquid inlet hole communicated with the medicine bag and the liquid through cavity, the bottom of the plug is provided with a liquid outlet hole communicated with the liquid through cavity, a first blocking ball used for sealing the liquid outlet hole is arranged in the liquid through cavity, a first spring is connected between the top wall of the liquid through cavity and the first blocking ball, and a mandril used for pushing the first blocking ball to move upwards is arranged in the connecting pipe;

after the blood maintenance liquid and the collected blood are filled in proportion, if the maintenance liquid remains in the anther sac, the plug is screwed off from the filling pipe, and after the ejector rod is separated from the first plugging ball, the elastic force of the first spring enables the first plugging ball to plug the liquid outlet hole again, so that the residual blood maintenance liquid in the anther sac is prevented from leaking, and the residual blood maintenance liquid is convenient to reuse;

the utility model discloses when no exogenic action, the elasticity of second spring promotes the second shutoff ball upwards to support on leading to the liquid hole, and the liquid in filling tube and the aseptic bag can be avoided to the second shutoff ball in flowing backwards plug and the anther sac to avoid the blood maintenance liquid in the anther sac to be contaminated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 inventive exercise.

Fig. 1 is a schematic structural view of an aseptic bag according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a connecting pipe according to an embodiment of the present invention;

fig. 3 is a schematic view of a sachet according to an embodiment of the invention;

fig. 4 is a schematic structural view of the plug screwed in the filling pipe according to the embodiment of the present invention.

In the figure: 1-sterile bag; 2-blood collection tube; 3-blood transfusion; 4-filling pipe; 5-medicinal bag; 6-connecting pipe; 7-a plug; 8-liquid through cavity; 9-liquid inlet hole; 10-liquid outlet holes; 11-a first blocking ball; 12-a first spring; 13-a top rod; 14-a connecting plate; 15-liquid through hole; 16-a second blocking ball; 17-a support portion; 18-a second spring; 19-a first plugging cap; 20-a second plugging cap; 21-blocking plate.

Detailed Description

As shown in fig. 1 to 4, an aseptic and backflow-preventing blood storage bag comprises an aseptic bag 1, the aseptic bag 1 is used for storing collected blood, the upper end of the aseptic bag 1 is connected with a blood collection tube 2 and a blood transfusion tube 3, the upper end of the aseptic bag 1 is also connected with a filling tube 4, the aseptic bag further comprises a medicine bag 5, the medicine bag 5 is used for storing blood maintenance liquid, the upper end of the filling tube 4 is fixedly provided with a connecting tube 6, the lower end of the medicine bag 5 is fixedly provided with a plug 7, the plug 7 is in a hollow cylindrical shape, the outer side of the plug 7 is provided with external threads, and the upper end of the connecting tube 6 is internally provided with internal threads matched with the external threads of the plug 7; be equipped with logical sap cavity 8 in the plug 7, the top of plug 7 is equipped with the intercommunication anther sac 5 with logical sap cavity 8's feed liquor hole 9, the bottom of plug 7 is equipped with the intercommunication logical sap cavity 8's play liquid hole 10, it is used for with to lead to being equipped with in the sap cavity 8 go out the first shutoff ball 11 of liquid hole 10 confined, lead to the roof of sap cavity 8 with be connected with first spring 12 between the first shutoff ball 11, be equipped with in the connecting pipe 6 and be used for promoting ejector pin 13 that first shutoff ball 11 shifted up, ejector pin 13 passes through connecting plate 14 fixed mounting be in on the inner wall of connecting pipe 6.

When no external force is applied, as shown in fig. 3, the elastic force of the first spring 12 pushes the first sealing ball 11 to abut against the liquid outlet hole 10, and the liquid outlet hole 10 is sealed by the first sealing ball 11, so as to prevent the blood maintenance liquid in the medicine bag 5 from leaking. When the blood maintenance liquid is added into the sterile bag 1, the plug 7 at the lower end of the medicine bag 5 is screwed into the upper end of the filling pipe 4, the ejector rod 13 moves upwards relative to the plug 7 in the process that the plug 7 is screwed into the filling pipe 4 until the upper end of the ejector rod 13 extends into the liquid outlet hole 10 and pushes the first blocking ball 11 to move upwards to be separated from the liquid outlet hole 10, as shown in figure 4, the medicine bag 5 is extruded, and the blood maintenance liquid in the medicine bag 5 sequentially passes through the liquid inlet hole 9, the liquid through cavity 8, the liquid outlet hole 10, the connecting pipe 6 and the filling pipe 4 to enter the sterile bag 1.

After the blood maintenance liquid and the collected blood are filled in proportion, if the maintenance liquid remains in the medicine bag 5, the plug 7 is screwed off from the filling pipe 4, and after the ejector rod 13 is separated from the first blocking ball 11, the liquid outlet hole 10 is blocked by the first blocking ball 11 again through the elasticity of the first spring 12, so that the residual blood maintenance liquid in the medicine bag 5 is prevented from leaking, and the residual blood maintenance liquid is convenient to reuse.

Fixed mounting has in connecting pipe 6 to be located the shutoff board 21 of the below of ejector pin 13, be equipped with liquid through hole 15 on the shutoff board 21, the below of shutoff board 21 be equipped with be used for with liquid through hole 15 confined second shutoff ball 16, be equipped with annular supporting part 17 on the inner wall of connecting pipe 6, supporting part 17 is located the below of second shutoff ball 16, supporting part 17 with be connected with second spring 18 between the second shutoff ball 16.

When no external force is applied, as shown in fig. 2, the elastic force of the second spring 18 pushes the second blocking ball 16 upwards against the liquid through hole 15, and the second blocking ball 16 can prevent the liquid in the filling tube 4 and the sterile bag 1 from flowing backwards into the plug 7 and the medicine bag 5, so that the blood maintenance liquid in the medicine bag 5 is prevented from being polluted. The plug 7 is screwed into the filling tube 4 and presses the capsule 5, so that the hydraulic pressure above the blocking plate 21 is increased, and the second blocking ball 16 is pushed by the hydraulic pressure to move downwards to be separated from the liquid through hole 15, so that the blood maintenance liquid flowing through the connecting tube 6 smoothly passes downwards through the liquid through hole 15.

Still include with the first shutoff cap 19 of upper end assorted of connecting pipe 6, the upper end outside of connecting pipe 6 is equipped with the external screw thread, be equipped with in the first shutoff cap 19 with the external screw thread assorted internal thread of connecting pipe 6. After the plug 7 is unscrewed from the filler pipe 4, the first plugging cap 19 is screwed on the upper end of the connection pipe 6, thereby preventing the mouth of the upper end of the connection pipe 6 from being contaminated.

The plug is characterized by further comprising a second plugging cap 20 matched with the lower end of the plug 7, wherein an internal thread matched with the external thread of the plug 7 is arranged in the second plugging cap 20. After the plug 7 is unscrewed from the filler pipe 4, the second plugging cap 20 is screwed on the lower end of the plug 7, so that the liquid outlet hole 10 at the bottom of the plug 7 is prevented from being polluted.

The aseptic bag 1 and the medicine bag 5 are respectively provided with scale marks for conveniently matching the blood maintenance liquid with the blood.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an aseptic and blood storage bag who prevents backward flow, includes aseptic bag, aseptic bag's upper end is connected with heparin tube and blood transfusion tube, aseptic bag's upper end still is connected with the filling tube, still includes the anther sac, its characterized in that: a connecting pipe is fixedly installed at the upper end of the filling pipe, a plug is fixedly installed at the lower end of the anther sac, the plug is in a hollow cylindrical shape, external threads are arranged on the outer side of the plug, and internal threads matched with the external threads of the plug are arranged in the upper end of the connecting pipe; be equipped with logical sap cavity in the plug, the top of plug is equipped with the intercommunication the anther sac with the feed liquor hole that leads to the sap cavity, the bottom of plug is equipped with the intercommunication the play liquid hole that leads to the sap cavity, it is used for with to lead to the sap cavity in the first shutoff ball of liquid hole confined, the roof that leads to the sap cavity with be connected with first spring between the first shutoff ball, be equipped with in the connecting pipe and be used for promoting the ejector pin that first shutoff ball shifted up, the ejector pin passes through connecting plate fixed mounting be in on the inner wall of connecting pipe.

2. A sterile and reflux-preventing blood storage bag as defined in claim 1, wherein: the connecting pipe is internally and fixedly provided with a blocking plate which is positioned below the ejector rod, the blocking plate is provided with a liquid through hole, the lower part of the blocking plate is provided with a second blocking ball which is used for sealing the liquid through hole, the inner wall of the connecting pipe is provided with an annular supporting part, the supporting part is positioned below the second blocking ball, and the supporting part is connected with a second spring between the second blocking ball.

3. A sterile and reflux-preventing blood storage bag as defined in claim 1, wherein: the connecting pipe is characterized by further comprising a first plugging cap matched with the upper end of the connecting pipe, an external thread is arranged on the outer side of the upper end of the connecting pipe, and an internal thread matched with the external thread of the connecting pipe is arranged in the first plugging cap.

4. A sterile and reflux-preventing blood storage bag as defined in claim 1, wherein: the plug is characterized by further comprising a second plugging cap matched with the lower end of the plug, and an internal thread matched with the external thread of the plug is arranged in the second plugging cap.

5. A sterile and reflux-preventing blood storage bag as defined in claim 1, wherein: the aseptic bag and the medicine bag are respectively provided with scale marks.