Top-bottom type blood bag

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a top-bottom type blood bag. The top-bottom type blood bag comprises a blood bag body, a second bag body, a blood sampling pipeline, a bottom pipeline, a connecting pipeline and a first blocking device, the blood bag body is communicated with the blood sampling pipeline and the bottom pipeline, the blood bag body is communicated with the second bag body through the connecting pipeline, and the first blocking device is arranged between the connecting pipeline and the second bag body. According to the blood bag, the first blocking device can be manually opened, the second bag body is inverted, an anticoagulant or a preservative solution can flow into the blood bag body along the connecting pipeline, the anticoagulant or the preservative solution can be prevented from flowing out abnormally, and therefore the quality risk of yellow spots in the pipeline is solved; besides, the centrifuged plasma layer can be transferred into the plasma storage bag through the transfer pipeline, the erythrocyte layer can be transferred into the erythrocyte storage bag through the bottom pipeline, the albuginea layer can be completely reserved in the blood bag body, blood components can be prepared and reserved to the maximum extent, and waste of blood resources is reduced.

Description

Technical Field

[0001] The present application belongs to the field of medical device technology, and specifically relates to a top-bottom blood bag. Background Art

[0002] Currently, most blood collection bags containing anticoagulants or maintenance fluids are filled directly into the bag through a filling line on the bag itself, then sealed. The top of the bag is connected to a blood collection tube, the other end of which is connected to a puncture needle. During movement or transportation, a small amount of the anticoagulant or maintenance fluid in the bag can leak into the tube. Because the anticoagulant or maintenance fluid contains glucose as a primary component, the small amount of maintenance fluid in the tube can denature after high-temperature sterilization, forming a colored polymer (5-hydroxymethylfurfural), resulting in yellow specks within the tube and posing a quality risk. Furthermore, most blood collection bags currently on the market are top-to-bottom construction. After whole blood is centrifuged, plasma, buffy coat, and concentrated red blood cells must be transferred sequentially through a transfer line at the top. This significantly increases the time and distance required to transfer blood components, potentially resulting in a small amount of blood waste. Furthermore, many blood centers still use manual blood component separation, placing a heavy workload on operators.

[0003] Therefore, there is an urgent need for a top-bottom blood bag that can prevent abnormal outflow of anticoagulants or maintenance solutions and can prepare and retain blood components to the greatest extent. Utility Model Content

[0004] The object of the present application is to provide a top-bottom blood bag that can prevent abnormal outflow of anticoagulant or maintenance solution and can prepare and retain blood components to the greatest extent.

[0005] The embodiments of the present application can be implemented through the following technical solutions:

[0006] A top-bottom blood bag comprises a blood bag body, a second bag body, a blood collection blood line, a bottom line, a connecting line and a first blocking device. The blood bag body is connected to the blood collection blood line and the bottom line respectively, and the blood bag body is connected to the second bag body through the connecting line. The first blocking device is arranged between the connecting line and the second bag body.

[0007] Furthermore, the first blocking device includes a blocking device outer shell and a broken core assembly, the broken core assembly is coaxially arranged with the blocking device outer shell, and the broken core assembly is connected to the cavity of the blocking device outer shell.

[0008] Furthermore, the breaking core assembly includes a breaking head and a connecting cavity, wherein the breaking head is arranged to face away from the second bag body, and the breaking head cooperates with the connecting cavity to separate the cavity of the plugging device jacket from the connecting cavity.

[0009] Preferably, the outer diameter of the breaking head gradually decreases in a direction away from the second bag body.

[0010] Preferably, the communicating cavity includes at least two cavities with different inner diameters, and the inner diameter of the cavity away from the second bag body is smaller than the inner diameter of the cavity close to the second bag body.

[0011] Preferably, a gap is formed between the communicating cavity and the outer shell of the blocking device. The gap is located between the breaking head and the outer shell of the blocking device, and its cross section is an inverted triangle-like structure.

[0012] Preferably, a liquid-stop clamp is provided on the blood collection tube path.

[0013] Furthermore, the top-bottom blood bag further includes a transfer pipeline, which is communicated with the blood bag body and is located at the top of the blood bag body.

[0014] Furthermore, the top-bottom blood bag further includes a second blocking device, which is arranged between the transfer pipeline and the blood bag body.

[0015] Furthermore, a liquid filling tube is provided on the top of the second bag body, and the liquid filling tube is communicated with the second bag body.

[0016] The top-bottom blood bag provided in the embodiments of the present application has at least the following beneficial effects:

[0017] This application improves upon the existing method of filling blood collection bags with anticoagulants or maintenance fluids. Instead, a small bag containing a fixed amount of anticoagulant or maintenance fluid is connected to the top of the top-bottom blood collection bag. A first blocking device is installed on the top of the bag. When the first blocking device is manually opened and the second bag is inverted, the anticoagulant or maintenance fluid flows through the connecting tubing into the blood bag, achieving regular preservation of blood components. This structure prevents abnormal outflow of anticoagulant or maintenance fluid, thereby resolving the quality risk of yellow spots within the tubing.

[0018] The plasma layer of the top-bottom blood collection bag of the present application after centrifugation can be transferred to the plasma preservation bag through the transfer pipeline, and the red blood cell layer will be transferred to the red blood cell preservation bag through the bottom pipeline. The white film layer will be completely retained in the bag body of the blood bag to facilitate the subsequent preparation of platelet-like component blood, which can prepare and retain blood components to the greatest extent and reduce the waste of blood resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall structural diagram of a top-bottom blood bag in this application;

[0020] Figure 2It is a cross-sectional view of the first blocking device and the second blocking device in this application.

[0021] Figure numerals: 1. blood collection tube line, 2. liquid stop clamp, 3. second blocking device, 4. blood bag body, 5. bottom pipeline, 6. transfer pipeline, 7. connecting pipeline, 8. first blocking device, 9. filling tube, 10. second bag body, 11. anticoagulant or maintenance liquid, 12. blocking device jacket, 13. broken core assembly, 131. broken head, 132. connecting cavity, 14. vacant part. DETAILED DESCRIPTION

[0022] Hereinafter, the present application will be further described based on preferred embodiments with reference to the accompanying drawings.

[0023] The terms used in this specification are intended to illustrate the embodiments of this application and are not intended to limit this application. Unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will have a clear understanding of the specific meanings of the above terms in this application.

[0024] In addition, in the description of the embodiments of the present application, various components on the drawings are enlarged or reduced in size for ease of understanding, but this practice is not intended to limit the scope of protection of the present application.

[0025] This application provides a top-bottom blood bag, Figure 1 The overall structure of the top-bottom blood bag in this application is shown in FIG. Figure 1 As shown, the top-bottom type blood bag includes a blood bag body 4, a second bag body 10, a blood collection tube line 1, a bottom line 5, a connecting line 7 and a first blocking device 8. The blood bag body 4 is connected to the blood collection tube line 1 and the bottom line 5 respectively, and the blood bag body 4 is connected to the second bag body 10 through the connecting line 7. The first blocking device 8 is arranged between the connecting line 7 and the second bag body 10. During blood collection, the other end of the blood collection tube circuit 1 will be connected to the intravenous puncture needle. After the puncture needle punctures the human body, the whole blood passes through the blood collection tube circuit 1 into the blood bag body 4 for storage; the second bag body 10 is filled with an anticoagulant or maintenance fluid 11, and the first blocking device 8 can prevent the anticoagulant or maintenance fluid 11 from flowing out abnormally, thereby solving the quality risk of yellow spots in the pipeline; after the blood bag body 4 is centrifuged, the top layer is the plasma layer, the middle layer is the buffy coat layer (white blood cells and platelet layer), and the bottom layer is the red blood cell layer. The bottom pipeline 5 is located at the bottom of the blood bag body 4, and the red blood cell layer can flow out and be preserved through the bottom pipeline 5 to achieve maximum preparation and retention of blood components.

[0026] Furthermore, Figure 2 A cross-sectional view of the first blocking device 8 in this application is shown, as shown in FIG. Figure 2 As shown, the first blocking device 8 includes a blocking device outer shell 12 and a snap-off core assembly 13. The snap-off core assembly 13 is coaxially arranged with the blocking device outer shell 12 and connected to the cavity of the blocking device outer shell 12. The operator can break the snap-off core assembly 13 to connect the connecting pipe 7 with the second bag body 10, thereby transferring the anticoagulant or maintenance solution 11 from the second bag body 10 to the blood bag body 4.

[0027] Furthermore, the breaking core assembly 13 includes a breaking head 131 and a connecting cavity 132. The breaking head 131 is arranged to face away from the second bag body 10. The breaking head 131 cooperates with the connecting cavity 132 to separate the cavity of the blocking device jacket 12 from the connecting cavity 132. The operator can break off the breaking head 131. Although the broken head 131 will remain in the blocking device jacket 12 after breaking, it will not block the connection between the cavity of the blocking device jacket 12 and the connecting cavity 132.

[0028] In some preferred embodiments of the present application, the outer diameter of the breaking head 131 gradually decreases in the direction away from the second bag body 10 to facilitate the operator to apply force and ensure the breaking effect, stability and smooth flow of liquid.

[0029] In some preferred embodiments of the present application, the connecting cavity 132 includes at least two cavities with different inner diameters, and the inner diameter of the cavity away from the second bag body 10 is smaller than the inner diameter of the cavity close to the second bag body 10, so as to ensure that the flow rate of the liquid flowing out of the first blocking device 8 is greater than the flow rate entering the first blocking device 8, so that the liquid can inevitably flow from the second bag body 10 into the blood bag body 4.

[0030] In some preferred embodiments of the present application, a gap 14 is formed between the connecting cavity 132 and the blocking device outer shell 12. The gap 14 is located between the breaking head 131 and the blocking device outer shell 12, and its cross-section is an inverted triangle structure. The debris generated after the first blocking device 8 is broken can be squeezed and collected into the gap 14, reducing or avoiding the debris from entering the blood and being transfused into the human body.

[0031] In some preferred embodiments of the present application, a liquid stop clamp 2 is provided on the blood collection tube line 1 to control the communication between the blood collection tube line 1 and the blood bag body 4 .

[0032] In some preferred embodiments of the present application, the top-bottom blood bag also includes a transfer line 6, which is connected to the blood bag body 4. The transfer line 6 is located at the top of the blood bag body 4. The plasma layer after centrifugation can be transferred and stored from the transfer line 6, and the white film layer remains in the blood bag body 4 to achieve maximum preparation and retention of blood components.

[0033] Furthermore, the top-bottom blood bag includes a second blocking device 3, which is disposed between the transfer line 6 and the blood bag body 4 and controls the connection between the transfer line 6 and the blood bag body 4 to control the flow of liquid. The structure of the second blocking device 3 is identical to that of the first blocking device 8 and will not be further described here.

[0034] In some preferred embodiments of the present application, a liquid filling tube 9 is provided on the top of the second bag body 10 , which is in communication with the second bag body 10 , and liquid can be injected into the second bag body 10 through the liquid filling tube 9 .

[0035] The usage process of the top-bottom blood bag in this application is as follows: when collecting blood, the blood collection tube line 1 is connected to a venous puncture needle, the stop clamp 2 is opened, and after the puncture needle is inserted into the human body, the whole blood passes through the blood collection tube line 1 into the blood bag body 4 for storage. The operator opens the first blocking device 8 and inverts the second bag body 10, and the anticoagulant or maintenance liquid 11 flows into the blood bag body 4 along the connecting pipe 7, realizing anticoagulation and regular storage of the whole blood and preventing abnormal outflow of the anticoagulant or maintenance liquid 11, thereby solving the quality risk of yellow spots in the pipe. After the blood bag body 4 containing whole blood is centrifuged in the centrifuge, stratification will occur according to the different specific gravities of each blood component, namely the plasma layer, the buffy coat layer, and the red blood cell layer from top to bottom. The second blocking device 3 is opened, and the plasma layer is transferred to the plasma storage bag through the transfer pipe 6, and the red blood cell layer is transferred to the red blood cell storage bag through the bottom pipe 5. The buffy coat layer will be completely retained in the blood bag body 4, so that platelet-like component blood can be prepared later, thereby achieving the maximum preparation and retention of blood components.

[0036] The above is a detailed introduction to the specific implementation methods of the present application. For those skilled in the art, several improvements and modifications can be made to the present application without departing from the principles of the present application. These improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A top-bottom blood bag, characterized by: It includes a blood bag body, a second bag body, a blood collection blood line, a bottom line, a connecting line and a first blocking device. The blood bag body is connected to the blood collection blood line and the bottom line respectively. The blood bag body is connected to the second bag body through the connecting line. The first blocking device is arranged between the connecting line and the second bag body.

2. A top-bottom blood bag according to claim 1, characterized in that: The first blocking device includes a blocking device outer shell and a broken core assembly. The broken core assembly is coaxially arranged with the blocking device outer shell, and the broken core assembly is connected to the cavity of the blocking device outer shell.

3. A top-bottom blood bag according to claim 2, characterized in that: The breaking core assembly includes a breaking head and a connecting cavity. The breaking head is arranged to face away from the second bag body. The breaking head cooperates with the connecting cavity to separate the cavity of the plugging device jacket from the connecting cavity.

4. A top-bottom blood bag according to claim 3, characterized in that: The outer diameter of the breaking head gradually decreases in a direction away from the second bag body.

5. The top-bottom blood bag according to claim 3, characterized in that: The communicating cavity includes at least two cavities with different inner diameters, and the inner diameter of the cavity away from the second bag body is smaller than the inner diameter of the cavity close to the second bag body.

6. The top-bottom blood bag according to claim 3, characterized in that: A gap is formed between the communicating cavity and the outer shell of the blocking device. The gap is located between the breaking head and the outer shell of the blocking device, and its cross section is an inverted triangle structure.

7. The top-bottom blood bag according to claim 1, characterized in that: A liquid-stopping clamp is provided on the blood collection tube path.

8. The top-bottom blood bag according to claim 1, characterized in that: The top-bottom blood bag further includes a transfer pipeline, which is communicated with the blood bag body and is located at the top of the blood bag body.

9. The top-bottom blood bag according to claim 8, characterized in that: The top-bottom blood bag further comprises a second blocking device, which is arranged between the transfer pipeline and the blood bag body.

10. The top-bottom blood bag according to claim 1, characterized in that: A liquid filling tube is provided on the top of the second bag body, and the liquid filling tube is communicated with the second bag body.

Images