Arteriovenous blood exchange device

Abstract

The utility model provides an arteriovenous blood exchange device. The arteriovenous blood exchange device comprises an arterial blood transfusion assembly and a venous blood transfusion assembly, the vein blood transfusion assembly comprises a blood transfusion bag, a first blood distribution tube, a second blood distribution tube, a blood transfusion main tube and a blood transfusion branch tube, the first blood distribution tube and the second blood distribution tube are both communicated with the upper portion of the blood transfusion bag, and the bottom of the blood transfusion bag is provided with the blood transfusion main tube and connected with the blood transfusion branch tube through the blood transfusion main tube; the number of the blood transfusion branch pipes is two, the two blood transfusion branch pipes are communicated with the blood transfusion main pipe through the blood transfusion control three-way valve, and each blood transfusion branch pipe is provided with a vein end blood transfusion pump and a blood transfusion control branch switch. The blood transfusion bag is detachably sleeved with a heat preservation heating sleeve, the heat preservation heating sleeve is provided with an observation opening right opposite to the scales on the blood transfusion bag, a heating wire assembly, a temperature sensor, a controller and a display screen are arranged on the heat preservation heating sleeve, and the controller is connected with the heating wire assembly, the temperature sensor, the display screen and a power module. According to the device, the blood transfusion amount and the blood transfusion speed can be conveniently controlled, and meanwhile the blood transfusion comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical blood exchange equipment, in particular to an arteriovenous blood exchange device. Background Art

[0002] Neonatal hyperbilirubinemia is a yellowing of the skin or other organs caused by the accumulation of bilirubin in the body. The incidence rate in normal newborns in the early stage exceeds 80%, and it is also a common cause of hospitalization in the neonatal period. Mild cases of hyperbilirubinemia can be relieved on their own, while severe cases can cause bilirubin encephalopathy, which causes permanent damage to the child's nervous system and even leads to the death of some newborns. Neonatal exchange transfusion therapy is to replace the patient's plasma and blood cells with banked blood, and replace the pathological products in the blood to achieve the purpose of treatment. It is the most effective and fastest method for treating severe neonatal hyperbilirubinemia, and it is also an important measure to save lives and reduce or avoid sequelae. The operation method of peripheral arteriovenous synchronous exchange transfusion is to calculate the amount of exchange transfusion according to the weight of the child, and the total blood volume is about 150-180ml / kg. The blood transfusion in and out of the blood vessels is peripheral venous blood entering and arterial bleeding. The whole treatment time is controlled at about 3 hours. The initial slow speed is used to infuse an appropriate amount of red blood cells and plasma mixed blood. After 5-10 minutes, arterial bleeding begins and rises to a certain fixed speed. Conventional transfusion therapy also requires the mixing of O-type leukocyte-reduced red blood cells and AB-type fresh frozen plasma, with a red blood cell to plasma ratio of 3:1. However, there is a lack of dedicated neonatal transfusion blood circuits in clinical practice. During transfusion, nurses are required to manually draw blood with a syringe and assemble the arteriovenous transfusion blood circuit with blood transfusion tubes, three-way connectors, buckets, etc., which not only increases the risk of infection for children, but also increases the risk of occupational exposure for medical staff.

[0003] To this end, the Chinese invention patent application with application number 202011524725.2 proposes an arteriovenous blood exchange circuit system and a blood volume calculation method thereof, the system includes a blood transfusion component and a blood drawing component, the blood transfusion component includes a three-way pipe joint, two interfaces of the three-way pipe joint are connected to the plasma bag and the red blood cell bag respectively through pipelines, and the remaining interface is connected to the patient's vein through a blood transfusion pump, and the pipelines for conveying plasma and red blood cell fluid are provided with flow sensors, and the pipeline between the blood transfusion pump and the three-way pipe joint is provided with a flow switch; the blood drawing component also includes a three-way pipe joint, two interfaces of the three-way pipe joint are connected to the heparin liquid supply system and the collection tube respectively through pipelines, and the remaining interface is connected to the patient's artery through a negative pressure blood drawing pump, and the pipelines for conveying heparin liquid and connecting the collection tube are provided with flow sensors, and the collection tube is provided with a liquid level sensor. The system solves the problem that the blood exchange circuit system in the prior art calculates the amount of waste blood by weighing conversion and cannot accurately calculate the blood output. At the same time, there is no need for manual suction by nurses, the blood transfusion speed is controllable, and the safety is high. However, the blood transfusion component of this system cannot control the temperature of plasma, and the low temperature during blood transfusion can easily cause discomfort to patients. Utility Model Content

[0004] In view of the above, it is necessary to provide an arteriovenous blood exchange device to control the blood transfusion volume and blood transfusion speed while improving the comfort of blood transfusion.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0006] An arteriovenous blood exchange device comprises an arterial blood transfusion component and a venous blood transfusion component;

[0007] The arterial blood transfusion assembly comprises an arterial end three-way connector, wherein the first port of the arterial end three-way connector is connected to an arterial indwelling needle, the second port is connected to a heparin syringe via a heparin extension tube, and the third port is connected to a waste blood bag via an arterial waste blood output tube, an arterial end blood transfusion pump is arranged on the arterial waste blood output tube, and the bag body of the waste blood bag has scales and a hanging ear on the top;

[0008] The intravenous blood transfusion assembly comprises a blood transfusion bag, a first blood supply blood tube, a second blood supply blood tube, a main blood transfusion tube and a blood transfusion branch tube. The blood transfusion bag has a scale and a hook and an intravenous blood transfusion injection port on the top. One end of the first blood supply blood tube and the second blood supply blood tube are both connected to the upper part of the blood transfusion bag, and the other end is provided with a puncture needle. The bottom of the blood transfusion bag is provided with a main blood transfusion tube, and the blood transfusion branch tube is connected through the main blood transfusion tube.

[0009] The first blood distribution blood vessel and the second blood distribution blood vessel are both provided with a blood distribution control switch and a first blood filter, and the blood distribution control switch is located between the first blood filter and the blood transfusion bag;

[0010] The blood transfusion main pipe is provided with a blood transfusion control main switch and a second blood filter, and the blood transfusion control main switch is located between the blood transfusion bag and the second blood filter;

[0011] Two blood transfusion branches are provided, and the two blood transfusion branches are connected to the blood transfusion main pipe through a blood transfusion control three-way valve. Each blood transfusion branch is provided with a venous end blood transfusion pump and a blood transfusion control sub-switch, and the venous end blood transfusion pump is provided between the blood transfusion control three-way valve and the blood transfusion control sub-switch.

[0012] The outer detachable cover of the blood transfusion bag is provided with a heat preservation heating cover, which has an observation port facing the scale on the blood transfusion bag, and is provided with a heating wire assembly, a temperature sensor, a controller and a display screen, and the controller is respectively connected to the heating wire assembly, the temperature sensor, the display screen and the power module.

[0013] Preferably, an exhaust and drug injection port is provided on the top of the waste blood bag, and a filter net is detachably mounted on the exhaust and drug injection port.

[0014] Preferably, a detachable filter is installed on the intravenous blood transfusion and drug injection port.

[0015] Preferably, both the first blood distribution tube and the second blood distribution tube are provided with a Moffitt dropper, and the first blood filter is integrated on the Moffitt dropper.

[0016] Preferably, the first blood supply tube and the second blood supply tube are both in communication with the top of the blood transfusion bag.

[0017] Preferably, the first blood supply blood tube and the second blood supply blood tube are arranged on opposite sides of the hook and the intravenous blood transfusion and drug injection port.

[0018] Preferably, the blood matching control switch and the blood transfusion control sub-switch are both speed regulating switches.

[0019] Preferably, the thermal insulation heating jacket has a hanging rope.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. In view of the characteristics of shallow peripheral blood vessels and thin blood vessel walls of newborns, the utility model is provided with two blood transfusion branches, so as to avoid a series of complications such as extravasation, venous spasm, rupture, etc. caused by too fast infusion speed in infants through two venous pathways. At the same time, the blood transfusion speed is adjusted by the venous end blood transfusion pumps on the two venous pathways, so that the venous blood transfusion assembly of the utility model can control the blood transfusion speed, and the blood transfusion volume can be controlled in conjunction with the scale on the blood transfusion bag, so as to realize safe and controllable blood transfusion and exchange.

[0022] 2. The utility model heats and insulates the blood on the blood transfusion bag by arranging a detachable heat preservation heating sleeve on the blood transfusion bag, thereby avoiding discomfort to the patient caused by the overcooled plasma being transfused into the patient's body. In addition, the detachable arrangement allows the heat preservation heating sleeve to be reused, thereby reducing the patient's treatment cost and avoiding waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the arterial blood transfusion component of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the intravenous blood transfusion component of the utility model.

[0025] Figure 3 It is a structural schematic diagram of the utility model intravenous blood transfusion assembly when the heat preservation heating jacket is not provided.

[0026] Main component symbols

[0027] In the figure: arterial end three-way connector 1, arterial indwelling needle 2, heparin extension tube 3, heparin syringe 4, arterial waste blood output tube 5, arterial end blood transfusion pump 6, waste blood bag 7, exhaust injection port 8, blood transfusion bag 9, hook 10, venous blood transfusion injection port 11, first blood distribution blood tube 12, second blood distribution blood tube 13, first blood filter 14, blood distribution control switch 15, blood transfusion main tube 16, blood transfusion control main switch 17, second blood filter 18, blood transfusion control three-way valve 19, blood transfusion branch tube 20, venous end blood transfusion pump 21, blood transfusion control sub-switch 22, thermal insulation heating sleeve 23, observation port 24, display screen 25, hanging rope 26.

[0028] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0029] See also Figure 1-3 In a preferred embodiment of the present invention, an arteriovenous blood exchange device includes an arterial blood transfusion component and a venous blood transfusion component.

[0030] The arterial blood transfusion assembly includes an arterial end three-way connector 1, the first port of the arterial end three-way connector 1 is connected to an arterial indwelling needle 2, the second port is connected to a heparin syringe 4 through a heparin extension tube 3, and the third port is connected to a waste blood bag 7 through an arterial waste blood output tube 5. The arterial waste blood output tube 5 is provided with an arterial end blood transfusion pump 6, and the bag body of the waste blood bag 7 has a scale and a hanging ear on the top, the hanging ear is convenient for hanging the waste blood bag 7, and the scale is convenient for calculating the amount of blood exchanged. Furthermore, the top of the waste blood bag 7 is provided with an exhaust and injection port 8, and a filter net is detachably installed on the exhaust and injection port 8, so as to facilitate the nurse to inject anticoagulant heparin through the exhaust and injection port 8 to prevent the blood in the waste blood bag 7 from agglutinating and affecting the measurement.

[0031] The intravenous blood transfusion assembly includes a blood transfusion bag 9, a first blood distribution blood vessel 12, a second blood distribution blood vessel 13, a main blood transfusion pipe 16 and a blood transfusion branch pipe 20. The blood transfusion bag 9 has a scale, and a hook 10 and a venous blood transfusion injection port 11 are provided on the top of the blood transfusion bag 9. A detachable filter is preferably installed on the venous blood transfusion injection port 11. One end of the first blood distribution blood vessel 12 and the second blood distribution blood vessel 13 are both connected to the upper part of the blood transfusion bag 9, and the other end is provided with a puncture needle. The bottom of the blood transfusion bag 9 is provided with a main blood transfusion pipe 16, and the blood transfusion branch pipe 20 is connected through the main blood transfusion pipe 16. The total blood transfusion volume is accurately recorded by the scale on the blood transfusion bag 9. The venous blood transfusion injection port 11 on the blood transfusion bag 9 is convenient for nurses to inject liquid medicine. The first blood distribution blood vessel 12 is used to connect the red blood cell distribution end to introduce red blood cells into the blood transfusion bag 9, and the second blood distribution blood vessel 13 is used to connect the plasma distribution end to introduce plasma into the blood transfusion bag 9. Plasma and red blood cells can be mixed in the blood transfusion bag 9. Furthermore, a blood matching control switch 15 and a first blood filter 14 are provided on the pipelines of the first blood matching blood vessel 12 and the second blood matching blood vessel 13 of the utility model. The blood matching control switch 15 is located between the first blood filter 14 and the blood transfusion bag 9 to control the on and off of the first blood matching blood vessel 12 and the second blood matching blood vessel 13 respectively, and the first blood filter 14 is used to filter the impurities in the blood transfusion at one time; preferably, a Moffitt dropper is provided on the first blood matching blood vessel 12 and the second blood matching blood vessel 13, and the first blood filter 14 is integrated on the Moffitt dropper, and the blood matching control switch 15 is a speed regulating switch, which is convenient for adjusting the flow rate of the red blood cells and plasma input into the blood transfusion bag 9, so that the blood can be mixed in proportion according to the doctor's order; in order to facilitate the input of red blood cells and plasma, preferably, the first blood matching blood vessel 12 and the second blood matching blood vessel 13 are both connected to the top of the blood transfusion bag 9, and the first blood matching blood vessel 12 and the second blood matching blood vessel 13 are preferably arranged on the opposite sides of the hook 10 and the intravenous blood transfusion injection port 11.

[0032] In the utility model, a blood transfusion control main switch 17 and a second blood filter 18 are provided on the blood transfusion main pipe 16. The blood transfusion control main switch 17 is located between the blood transfusion bag 9 and the second blood filter 18 to control the mixed blood in the blood transfusion bag 9 to flow to the blood transfusion branch pipe 20, thereby achieving venous transfusion, and the second blood filter 18 can filter the mixed blood to ensure the safety of the patient. Preferably, the blood transfusion control sub-switch 22 is also a speed regulating switch.

[0033] Furthermore, two blood transfusion branch tubes 20 are provided, and the two blood transfusion branch tubes 20 are connected to the blood transfusion main tube 16 through the blood transfusion control three-way valve 19. Each blood transfusion branch tube 20 is provided with a venous end blood transfusion pump 21 and a blood transfusion control sub-switch 22, and the venous end blood transfusion pump 21 is arranged between the blood transfusion control three-way valve 19 and the blood transfusion control sub-switch 22; that is, the utility model has two venous blood transfusion channels, and each venous blood transfusion channel can adjust the blood transfusion speed through the connected venous end blood transfusion pump 21, so as to avoid a series of complications such as extravasation, venous spasm, rupture, etc. caused by excessive infusion speed in children.

[0034] In addition, in the present invention, the outer detachable cover of the blood transfusion bag 9 is provided with a heat preservation heating cover 23, the heat preservation heating cover 23 has an observation port 24 facing the scale on the blood transfusion bag 9, and is provided with a heating wire assembly, a temperature sensor, a controller and a display screen 25, the controller is respectively connected to the heating wire assembly, the temperature sensor, the display screen 25 and the power module, so as to heat and keep the blood transfusion bag 9 warm by covering the heat preservation heating cover 23, so as to avoid discomfort to the patient when the overcooled mixed blood is transported to the human body, and in addition, the detachable connection mode of the heat preservation heating cover 23 enables it to be reused, and the temperature sensor thereon can detect the temperature of the blood transfusion bag 9 at the periphery thereof, for example, at the connection between the bottom of the blood transfusion bag 9 and the blood transfusion main pipe 16, and the detected temperature can be displayed on the display screen 25, so as to facilitate the temperature viewing. Preferably, the heat preservation heating cover 23 has a hanging rope 26, which is convenient for fixing the heat preservation heating cover 23 on the blood transfusion bag 9, and the hanging rope 26 can be connected to the hook 10, or can be hung together with the hook 10.

[0035] Finally, it should be noted that the blood transfusion device of the present invention is made of TPE material, does not contain the plasticizer DEHP, and is suitable for newborns.

[0036] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.

Claims

1. An arteriovenous blood exchange device, comprising an arterial blood transfusion component and a venous blood transfusion component; The arterial blood transfusion assembly comprises an arterial end three-way connector, wherein the first port of the arterial end three-way connector is connected to an arterial indwelling needle, the second port is connected to a heparin syringe via a heparin extension tube, and the third port is connected to a waste blood bag via an arterial waste blood output tube, an arterial end blood transfusion pump is arranged on the arterial waste blood output tube, and the bag body of the waste blood bag has scales and a hanging ear on the top; The intravenous blood transfusion assembly comprises a blood transfusion bag, a first blood supply blood tube, a second blood supply blood tube, a main blood transfusion tube and a blood transfusion branch tube. The blood transfusion bag has a scale and a hook and an intravenous blood transfusion injection port on the top. One end of the first blood supply blood tube and the second blood supply blood tube are both connected to the upper part of the blood transfusion bag, and the other end is provided with a puncture needle. The bottom of the blood transfusion bag is provided with a main blood transfusion tube, and the blood transfusion branch tube is connected through the main blood transfusion tube. Features: The first blood distribution blood vessel and the second blood distribution blood vessel are both provided with a blood distribution control switch and a first blood filter, and the blood distribution control switch is located between the first blood filter and the blood transfusion bag; The blood transfusion main pipe is provided with a blood transfusion control main switch and a second blood filter, and the blood transfusion control main switch is located between the blood transfusion bag and the second blood filter; Two blood transfusion branches are provided, and the two blood transfusion branches are connected to the blood transfusion main pipe through a blood transfusion control three-way valve. Each blood transfusion branch is provided with a venous end blood transfusion pump and a blood transfusion control sub-switch, and the venous end blood transfusion pump is provided between the blood transfusion control three-way valve and the blood transfusion control sub-switch. The outer detachable cover of the blood transfusion bag is provided with a heat preservation heating cover, which has an observation port facing the scale on the blood transfusion bag, and is provided with a heating wire assembly, a temperature sensor, a controller and a display screen, and the controller is respectively connected to the heating wire assembly, the temperature sensor, the display screen and the power module.

2. An arteriovenous blood exchange device as claimed in claim 1, characterized in that: The top of the waste blood bag is provided with an exhaust and drug injection port, and a filter net is detachably mounted on the exhaust and drug injection port.

3. The arteriovenous blood exchange device according to claim 1, characterized in that: A detachable filter screen is installed on the intravenous blood transfusion and drug injection port.

4. The arteriovenous blood exchange device according to claim 1, characterized in that: The first blood distribution tube and the second blood distribution tube are both provided with a Moffitt dropper, and the first blood filter is integrated on the Moffitt dropper.

5. The arteriovenous blood exchange device according to claim 1, characterized in that: The first blood supply tube and the second blood supply tube are both communicated with the top of the blood transfusion bag.

6. The arteriovenous blood exchange device according to claim 1, characterized in that: The first blood supply blood tube and the second blood supply blood tube are respectively arranged on opposite sides of the hook and the intravenous blood transfusion and drug injection port.

7. The arteriovenous blood exchange device according to claim 1, characterized in that: The blood matching control switch and the blood transfusion control sub-switch are both speed regulating switches.

8. The arteriovenous blood exchange device according to claim 1, characterized in that: The heat preservation and heating jacket has a hanging rope.

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