Blood storage device and blood pump in-vitro hemolysis test system

Abstract

The utility model discloses a blood storage device and blood pump in-vitro hemolysis test system which comprises a body which is of a bag-shaped structure, a sampling pipeline is arranged on the body in a communicated mode, and a sterile cock is arranged at the end, away from the body, of the sampling pipeline in a sealed mode. Two connecting holes are formed in the body in a spaced mode, each connecting hole is fixedly provided with a connecting end, each connecting end comprises a pagoda connector and is connected with the corresponding connecting hole in a sealed mode, and the outer wall of the end, away from the body, of each connecting end is sleeved with a circulation pipeline in a sealed mode. The sampling pipeline is connected to the body of the bag-shaped structure, and the two connecting ends are communicated with the circulation pipeline in a sealed mode, so that the body can meet the requirements of sealing, sampling and connection of the circulation pipeline, meanwhile, the processing mode of the body of the bag-shaped structure is simple, and the cost is low. The connecting hole and the connecting end can be adaptively arranged as required, so that the structural cost and the use difficulty of the blood storage device are reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to a blood storage device and an in vitro hemolysis testing system for a blood pump. Background Technology

[0002] A blood pump is a device that uses mechanical principles to simulate the contraction and relaxation of the heart to maintain blood circulation. It is used to stabilize and regulate blood flow in extracorporeal circulation and is commonly used in cardiac surgery or intensive care. Its performance is crucial to the surgical procedure. The in vitro hemolysis test is a very important test to evaluate the performance of a blood pump. During the in vitro hemolysis test, the blood storage device connected to the inflow and outflow tubing needs to be sealed to the tubing. Furthermore, the consumables for the in vitro hemolysis test are generally disposable. Current blood storage devices have complex structures, and some require custom-made or molded manufacturing, resulting in high costs and complex operations. However, commonly used extracorporeal blood bags on the market can only store blood outside the body and cannot meet the circulatory requirements of the blood pump hemolysis test.

[0003] Therefore, how to reduce the experimental cost and operational difficulty of the in vitro hemolysis experiment of blood pumps is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a blood storage device to reduce the experimental cost and operational difficulty of in vitro hemolysis experiments of blood pumps.

[0005] Another objective of this invention is to provide a blood pump in vitro hemolysis testing system that includes the aforementioned blood storage device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A blood storage device includes a body, which is a bag-shaped structure. A sampling tube is connected to the body, and a sterile stopcock is sealed at the end of the sampling tube away from the body. Two connection holes are spaced apart on the body, and a connection end is fixedly provided on each connection hole. The connection end includes a pagoda connector and is sealed to the connection hole. A flow tube is sealed on the outer wall of the end of the connection end away from the body.

[0008] Preferably, in the above-mentioned blood storage device, the connecting end includes a locking nut and a washer, the pagoda connector includes a threaded portion and a protrusion, the threaded portion passes through the connecting hole, two locking nuts are threadedly connected to the threaded portion and are respectively located on the inner and outer sides of the body and press against the wall surface of the body, the locking nut located outside the body abuts against the protrusion; an annular washer is provided on the side of each locking nut that contacts the wall surface of the body.

[0009] Preferably, in the blood storage device, the sealing ring further comprising a circular structure, the sealing ring is arranged between the locking nut and the protruding part outside the body.

[0010] Preferably, in the blood storage device, a test pipeline is further arranged, two ends of the test pipeline are capable of being sealingly arranged with the connection end away from the body.

[0011] Preferably, in the blood storage device, the sterile cock is a three-way cock structure, and one of the end is an exhaust port.

[0012] Preferably, in the blood storage device, the two connection holes are arranged on the same side or opposite sides of the body.

[0013] Preferably, in the blood storage device, the locking nut is made of polyethylene, and the gasket and the sealing ring are made of medical silicone.

[0014] Preferably, in the blood storage device, the connection hole is a circular hole and is opened by a skin puncture device with a hole diameter of 10 mm.

[0015] A blood pump extracorporeal hemolysis test system, comprising a communication test blood pump and a circulation pipeline, the circulation pipeline is provided with a pressure test device, a temperature test device, a flow test device and the blood storage device of any one of the above-mentioned embodiments, two flow pipelines on the blood storage device are respectively connected to the circulation pipeline as an inlet pipeline and an outlet pipeline.

[0016] Preferably, in the blood pump extracorporeal hemolysis test system, the circulation pipeline is further provided with a flow regulating clamp for regulating the circulation flow.

[0017] As can be seen from the above technical solutions, the blood storage device provided by the utility model can keep the sealing effect of the body while having the sampling and detection effect of the liquid in the body by arranging the sampling pipeline and the sterile cock on the body. Meanwhile, two connection holes are arranged on the body and the connection end is installed, the connection end is sealed and locked on the side wall of the body to connect the flow pipeline. The above structure can keep the sealing effect of the body and provide the liquid inlet and outlet to make the body participate in the circulation, meet the circulation demand of the blood pump test process, and improve the blood bag commonly used in the medical process. The blood storage device has low cost and simple operation, and reduces the difficulty of the test process. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below only show some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 The structure schematic diagram of the blood storage device provided by the present application is shown in the figure.

[0020] Figure 2 The structure schematic diagram of the body and the sampling pipeline and the connecting end head is shown in the figure.

[0021] Figure 3 The cross-sectional schematic diagram of the connecting structure of the connecting end head and the body is shown in the figure.

[0022] Figure 4 The exploded view of the connecting end head located outside the body structure is shown in the figure.

[0023] Figure 5 The structure schematic diagram of the connecting hole set sampling pipeline on the body is shown in the figure.

[0024] Figure 6 The structure schematic diagram of the connecting end head assembling the test pipeline is shown in the figure.

[0025] Figure 7 The structure schematic diagram of the connecting hole located on the opposite sides of the body is shown in the figure.

[0026] In the figure, 10 is the body, 110 is the connecting hole, 20 is the sampling pipeline, 210 is the sterile cock, 2110 is the exhaust port, 30 is the connecting end head, 310 is the cone joint, 3110 is the threaded part, 3120 is the protruding part, 320 is the locking nut, 330 is the gasket, 340 is the sealing ring, 40 is the flow pipeline, and 50 is the test pipeline. DETAILED DESCRIPTION

[0027] The core of the present application is to disclose a blood storage device to reduce the test cost and operation difficulty of blood pump extracorporeal hemolysis experiment.

[0028] Another purpose of the present application is to disclose a blood pump extracorporeal hemolysis test system comprising the above-mentioned blood storage device.

[0029] In order to make the person skilled in the art better understand the present application, the embodiments of the present application will be described below with reference to the drawings, and in addition, the embodiments shown below do not have any limiting effect on the content of the application claimed in the claims. In addition, the entire content of the constitution represented in the following embodiments is not limited to the solutions of the application claimed in the claims.

[0030] As Figures 1-7 shown, the blood storage device provided by the embodiment of the utility model, including the body 10 of bag structure, to carry out extracorporeal blood storage and participate in blood pump extracorporeal hemolysis test, it needs to be explained, adopt the body 10 of bag structure is due to the commonly used, the lower cost blood storage bag of present is bag structure, therefore the blood storage device provided by the embodiment of the utility model can carry out structural improvement based on the blood storage bag of present, and it is made of high-strength medical plastic, has good flexibility and durability, can withstand the pressure change that can be produced in the blood storage process, to satisfy the use demand of blood pump extracorporeal hemolysis test. Specifically, the body 10 is provided with sampling pipeline 20, and the sampling pipeline 20 is provided with a sterile tap 210 at the end away from the body 10, the sterile tap 210 is a commonly used medical device, which can seal the sampling pipeline 20, and avoid the body 10 from leaking at the end of the sampling pipeline 20, and the sterile tap 210 can provide a channel for the operator to take blood samples in the body 10.

[0031] It needs to be explained that the blood storage device provided by the embodiment of the utility model can be produced independently, and can be improved based on the commonly used blood storage bag structure. The commonly used blood storage bag structure has a closed tube, so when improving the commonly used blood storage bag structure, the closed end of the closed tube can be cut off, and the sterile tap 210 can be installed on the cut tube to complete the structural improvement.

[0032] On this basis, the body 10 is also provided with two connection holes 110, and each connection hole 110 is fixedly provided with a connection end 30. The connection end 30 passes through the connection hole 110 and is sealingly connected with the connection hole 110. In some embodiments of the utility model, the connection end 30 includes a pagoda joint 310 to smoothly pass through and sealingly connect the connection hole 110, and is convenient for plug-in connection. Meanwhile, the outer wall of the end of the connection end 30 away from the body 10 is also sealingly provided with a flow pipeline 40. When the sterile tap 210 at the end of the sampling pipeline 20 is sealed, the body 10 is connected with the outside through the flow pipeline 40 connected with the two connection ends 30. The two flow pipelines 40 can form a flow pipeline with the blood pump, so that the body 10 meets the blood storage requirements of the blood pump extracorporeal hemolysis test.

[0033] It should be noted that, as shown in the above embodiment, the blood storage device can be independently produced, or can be improved based on the currently commonly used blood storage bag structure. When the blood storage device is improved based on the currently commonly used blood storage bag structure, the operator can dig two holes on the currently commonly used blood storage bag, then pass the connecting end head 30 with the pagoda joint 310 through the connecting hole 110, and lock and seal through the pagoda joint 310, and then install the flow pipeline 40 on the connecting end head 30, so as to complete the processing of the blood storage bag. It should be further pointed out that, considering the current normal blood storage bag and the demand of blood pump extracorporeal hemolysis test, the volume of the body 10 is preferably 400ml-500ml.

[0034] The blood storage device provided by the embodiment of the utility model, through setting sampling pipeline 20 and aseptic plug 210 on body 10, can keep the sealing effect of body 10 and have the sampling and detection effect of the liquid in body 10. Two connecting holes 110 are set on body 10 and connecting end head 30 is installed, connecting end head 30 seals and locks the connecting hole 110 and is set on the side wall of body 10, so that flow pipeline 40 is connected. The above structure can keep the sealing effect of body 10 and provide liquid inlet and liquid outlet, so that body 10 can participate in circulation and meet the circulation demand of blood pump test process. The blood storage device can be improved based on the blood bag commonly used in medical process, has low cost and simple operation, and reduces the difficulty of test process.

[0035] Further, in some embodiments of the utility model, the connecting end head 30 specifically includes a locking nut 320 and a gasket 330, and the pagoda joint 310 includes a threaded portion 3110 and a protruding portion 3120. The cross-sectional area of the protruding portion 3120 in the axial direction of the pagoda joint 310 is greater than that of the threaded portion 3110. The threaded portion 3110 is provided with external threads on the outer wall, and the threaded portion 3110 is arranged through the connecting hole 110. It should be noted that the threaded portion 3110 passing through the connecting hole 110 specifically means that part of the threaded portion 3110 is located inside the body 10, and part of the threaded portion 3110 is located outside the body 10. The locking nut 320 is provided with at least two, and the two locking nuts 320 are threadedly connected to the threaded portion 3110. At the same time, the two locking nuts 320 are located on the inner and outer sides of the body 10. The locking nut 320 located on the inner side of the body 10 is in a threaded connection state, and the locking nut 320 located on the outer side of the body 10 is in a threaded connection state. One side abuts against the protruding portion 3120 to keep the position stable, and the other side cooperates with the locking nut 320 on the inner side of the body 10 to press the inner and outer wall surfaces of the body 10, so as to realize the fixed locking of the connecting end head 30 at the connecting hole 110 position of the body 10.

[0036] It should be noted that in the above embodiment, the lock nut 320 arranged outside the body 10 can be assembled into an integrated structure with the cone joint 310, the lock nut 320 arranged inside the body 10 is first placed into the body 10, the integrated lock nut 320 and the cone joint 310 are penetrated into the body 10 through the threaded part 3110, and are locked in abutment with the lock nut 320, so as to realize the compression of the two lock nuts 320 to the side wall of the body 10. At the same time, each lock nut 320 is provided with an annular gasket 330 on the side in contact with the wall surface of the body 10, so as to improve the sealing effect of the lock nut 320 to the area of the connecting hole 110 through the gasket 330, and avoid the problem of scratching the body 10 and causing leakage of the body 10 due to the direct contact of the lock nut 320 with the wall surface of the body 10.

[0037] In order to further optimize the above technical scheme, the blood storage device provided in some embodiments of the present application further comprises a sealing ring 340, which is a circular structure and is arranged between the lock nut 320 outside the body 10 and the protruding part 3120. When assembling the lock nut 320 outside the body 10 and the cone joint 310, the sealing ring 340 is first arranged through the threaded part 3110 and reaches one side of the protruding part 3120, then the lock nut 320 is connected with the threaded part 3110, until the lock nut 320 tightly compresses the sealing ring 340 to one side of the protruding part 3120, that is, the assembly of the lock nut 320 and the cone joint 310 is completed. The arrangement of the sealing ring 340 can solve the problem of poor connection effect caused by the rigid abutment of the lock nut 320 and the protruding part 3120, and improve the connection effect of the lock nut 320 and the cone joint 310.

[0038] In addition, in order to ensure that the blood storage device provided in the embodiments of the present application can be effectively used in the test process, the blood storage device further comprises a test pipeline 50, which is a pipeline structure with two open ends. The two end portions can be sealingly assembled and arranged with the one end of the connecting end 30 away from the body 10. Before use of the blood storage device, the one end of the connecting end 30 connected with the body 10 is exposed and arranged away from the body 10, the test liquid, mostly water, is filled into the body 10, and the two end portions of the test pipeline 50 are sealingly communicated with the two connecting ends 30. At this time, by extruding the body 10, whether there is bubble or liquid leakage phenomenon at the position of the connecting end 30 can be observed, so as to test the effective sealing of the blood storage device. At the same time, if leakage phenomenon occurs, the lock nut 320 can be appropriately tightened to improve the compression effect until the connecting end 30 position no longer produces leakage phenomenon. After the test is completed, the test pipeline 50 can be removed, and the flow pipeline 40 is connected at the position of the connecting end 30 to meet the subsequent test requirements.

[0039] In order to further optimize the above technical solutions, in the blood storage device provided by the embodiment of the utility model, the sterile plug 210 is a three-way plug structure, and one of the end heads is an exhaust port 2110, so that the air in the body 10 can be discharged during the blood filling process, and the other opening of the three-way plug is used for the operator to collect the sample.

[0040] Further, in some embodiments of the utility model, two connecting holes 110 are arranged on the same side of the body 10 to meet the experimental scene of liquid inlet and outlet on the same side of the body 10 during the blood pump extracorporeal hemolysis test. Similarly, two connecting holes 110 can also be arranged on opposite sides of the body 10 to make the liquid inlet and outlet pass through the body 10 to meet the experimental requirements. It should be noted that the arrangement position of the connecting hole 110 can be changed according to the actual experimental requirements, and similarly, a plurality of connecting holes 110 can also be arranged on the body 10 to set a plurality of connecting end heads 30 to meet the different angle connection requirements of different test processes. The connecting end head 30 that is not applicable can be closed by installing a blind pipe, without affecting the smooth progress of the test.

[0041] Further, in the above embodiment, the locking nut 320 is made of polyethylene, and the gasket 330 and the sealing ring 340 are made of medical silicone, which can improve the structural combination tightness and sealing effect through flexible connection, and at the same time, the commonly used medical material wall surface material can be used to pollute the blood and affect the test.

[0042] In addition, it should be noted that in order to improve the connection stability of the connecting end head 30, the connecting hole 110 is preferably a round hole structure, and when the commonly used blood storage bag structure is improved to form the blood storage device provided by the embodiment of the utility model, the connecting hole 110 can be opened by the skin perforator commonly used in medical treatment with a hole diameter of 10mm. The circular cutter head of the skin perforator performs semicircular cutting on the flattened edge of the body 10, that is, the connecting hole 110 in the circular structure is formed for the subsequent connection of the connecting end head 30.

[0043] Further, the utility model embodiment further provides a blood pump extracorporeal hemolysis test system, which comprises a test blood pump, and the inlet and outlet of the test blood pump are communicated with a circulating pipeline, and the circulating pipeline is provided with a pressure test device, a temperature test device and a flow test device to test various indexes during the operation of the test blood pump. At the same time, the circulating pipeline is also provided with the blood storage device provided by any one of the above embodiments, and the blood storage device is connected to the circulating pipeline as an inlet pipeline and an outlet pipeline through two flow pipelines 40. It should be noted that since the blood storage device has the technical effects of the above embodiments, the blood pump extracorporeal hemolysis test system also has the above technical effects, which will not be described herein.

[0044] In addition, in some embodiments of the utility model, still be provided with flow regulating clamp for adjusting circulating flow on circulating pipeline, flow regulating clamp is convenient flow regulating equipment, it can realize flow regulation on circulating pipeline through pulley movement, and change the operation environment of test blood pump to promote test range.

[0045] Hereinafter, the terms "first", "second" are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features.

[0046] The above description is only the preferred embodiment of the utility model and the explanation of the applied technical principles, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. The utility model range involved in the utility model is not limited to the technical scheme formed by the specific combination of the above technical features, and should also cover other technical schemes formed by the above technical features or its equivalent features in any combination without departing from the above utility model concept. For example, the technical scheme formed by the above features and the technical features disclosed in the utility model (but not limited to) with similar functions are replaced with each other.

Claims

1. A blood storage device, characterized by, The utility model provides a blood sampling device, including the body for bag -like structure, be provided with sampling pipeline on the body intercommunication, the sampling pipeline far from the body one end is sealed and is provided with sterile plug, the body is equipped with two connecting holes interval, each connecting hole is fixedly provided with the connecting end, the connecting end includes the pagoda joint and is sealedly connected with the connecting hole, the outer wall of the connecting end far from the body one end is sealed and is equipped with the flow pipeline.

2. The blood storage device of claim 1, wherein, The connecting end includes locking nut and gasket, the pagoda joint includes threaded part and convex part, the threaded part passes through the connecting hole, two locking nuts are all threadedly connected on the threaded part, and are respectively located on the inside and outside of the body and compress the wall surface of the body, the locking nut on the outside of the body abuts against the convex part, the side of each locking nut and the wall surface of the body is equipped with annular gasket.

3. The blood storage device of claim 2, wherein the blood storage device is configured to be used in a blood collection procedure. It also includes a circular sealing ring, the locking nut on the outside of the body and the convex part are provided with the sealing ring.

4. The blood storage device of claim 2, wherein the blood storage device is configured to be used in a blood collection procedure. It also includes a test pipeline, both ends of the test pipeline can be sealed and assembled with the end of the connecting end far from the body.

5. The blood storage device of claim 1, wherein the blood storage device is configured to be used in a blood bank. The sterile plug is a three-way plug structure, and one of the end is an exhaust port.

6. The blood storage device of claim 1, wherein, Two connecting holes are arranged on the same side or opposite sides of the body.

7. The blood storage device of claim 3, wherein the blood storage device is configured to be used in a blood collection procedure. The locking nut is made of polyethylene, and the gasket and the sealing ring are made of medical silica gel.

8. The blood storage device of claim 1, wherein, The connecting hole is a round hole and is opened by a skin perforator with a hole diameter of 10 mm.

9. A blood pump extracorporeal hemolysis test system, characterized by, It includes a communication test blood pump and a circulation pipeline, the circulation pipeline is provided with a pressure test device, a temperature test device, a flow test device and the blood storage device of any one of claims 1-8, two flow pipelines on the blood storage device are respectively connected to the circulation pipeline as inlet pipeline and outlet pipeline.

10. The extracorporeal hemolysis test system of claim 9, wherein, The circulation pipeline is also provided with a flow regulating clamp for adjusting the circulation flow.

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