Automatic pressure regulating type intraoperative autoblood transfusion device

Abstract

The invention relates to the technical field of medical treatment, in particular to an automatic pressure regulating type intraoperative autoblood transfusion device which comprises a blood sampling assembly and a blood bag assembly, and a first connecting pipe, an anticoagulant adding assembly and a second connecting pipe are sequentially connected between the blood sampling assembly and the blood bag assembly; the anticoagulant adding assembly is used for automatically adjusting the adding amount of an anticoagulant according to the blood sampling speed; a detection assembly for monitoring real-time pulse and blood pressure is arranged on the first connecting pipe; and a peristaltic pump is arranged on the second connecting pipe. The anticoagulant adding assembly comprises an injector, an injection tube and a converging tube which are connected in sequence; the converging pipe is vertically communicated with the injection pipe, and two ends of the converging pipe are respectively sleeved outside the first connecting pipe and the second connecting pipe. The blood sampling assembly comprises an artery blood sampling needle and a vein blood sampling needle; and the artery blood taking needle and the vein blood taking needle are respectively connected with the rear end of the first connecting tube through blood taking tubes. The spiral blades rotate along with blood flowing, so that the function of automatically driving the conveying ball to rotate to add the anticoagulant is realized, and the mixing uniformity is improved.

Description

Technical Field

[0001] The invention relates to the field of medical technology, and in particular to an automatic pressure-regulating intraoperative autologous blood transfusion device. Background Art

[0002] Bleeding or even massive bleeding during surgery is one of the common risks of surgical treatment and a serious threat to the life safety of surgical patients. When this happens, the most important thing is to give bleeding patients timely and sufficient blood transfusions to replenish blood loss. Due to the scarcity of blood resources, it is sometimes impossible to meet the blood needs of various medical institutions during surgery, so it is necessary to collect the patient's own blood for transfusion. The methods of autologous blood transfusion include pre-stored autologous blood transfusion, diluted autologous blood transfusion and recovered autologous blood transfusion.

[0003] Among them, pre-stored autologous blood transfusion has the highest degree of controllability, that is, the patient's own blood is collected and stored under safe and controllable conditions before the operation, and then transfused into the patient's body according to the patient's condition during the operation. This not only solves the blood source problem and the disadvantages of allogeneic blood transfusion, but also greatly reduces social costs. In this process, the uncontaminated blood in the patient's body cavity is first collected and stored in a special blood recovery bag, and anticoagulants are added at a certain proportion and speed to prevent blood coagulation. During the operation, the blood needs to be transfused back to the patient according to the amount of blood loss.

[0004] Since the blood transfused is the patient's own, there are no antigens in allogeneic blood, which can greatly reduce the chance of allergic reactions, such as rash, itching, and difficulty breathing. Allogeneic blood transfusion may cause fever reactions, while autologous blood transfusion can avoid fever caused by white blood cells, pyrogens, etc. in allogeneic blood, thereby improving the safety of blood transfusion for patients. Allogeneic blood transfusion has the risk of transmitting blood-borne infectious diseases such as hepatitis B and C, AIDS, and syphilis. Autologous blood transfusion completely avoids these potential infection risks, which is especially significant for patients with low immunity or special infection risk concerns. In the case of tight blood supply, autologous blood transfusion can reduce dependence on allogeneic blood, ensuring that patients can get blood supply in time when blood is needed in surgery, etc., without delaying treatment.

[0005] As the amount of blood used increases year by year, hospitals often face blood shortages. If patients and hospitals cannot get the blood they need in time, it will bring immeasurable consequences to patients. Although the country vigorously advocates free blood donation, it is also a drop in the bucket and the effect is not obvious. In order to reduce the waste of precious blood resources and meet the needs of clinical blood transfusion treatment, avoid or reduce the occurrence of adverse reactions to allogeneic blood transfusion, intraoperative blood transfusion autologous blood loss recovery, blood component separation, and therapeutic plasma exchange have been widely used in clinical practice, truly realizing "saving yourself with your own blood."

[0006] A Chinese patent with authorization announcement number CN113694294U discloses an automatic pressure-regulating intraoperative autologous blood transfusion device, comprising a box body, characterized in that: a sensing mechanism is arranged inside the box body, a pressure regulating mechanism is arranged at the upper end of the box body, a liquid spraying mechanism is arranged inside the box body, a matching mechanism is arranged outside the box body, the sensing mechanism and the liquid spraying mechanism are cooperatively connected, the sensing mechanism and the matching mechanism are connected by pipeline, the sensing mechanism and the pressure regulating mechanism are connected by pipeline, a power source is fixedly connected to the upper end of the box body, the sensing mechanism comprises a motor, the motor is fixedly connected to the box body, the motor is electrically connected to the power source, the output shaft of the motor is fixedly connected to a central shaft, a plurality of groups of protrusions are arranged at the outer end of the central shaft, and a disc is movably connected inside the box body. The present invention has the characteristics of strong practicality and real-time adjustment of the amount of anticoagulant added and the transfusion speed according to the patient's blood loss speed.

[0007] However, the above-mentioned automatic pressure-regulating intraoperative autologous blood transfusion device still has the following problems when in use: (1) The automatic pressure-regulating intraoperative autologous blood transfusion device replenishes anticoagulants in the blood through mechanical parts such as the central axis, bumps and discs. Long-term use may cause wear and aging, resulting in liquid leakage or pressure drop; (2) The automatic pressure-regulating intraoperative autologous blood transfusion device achieves the purpose of automatic control through multiple operating steps, and its internal structure is complex and inconvenient to disassemble and clean, which increases the workload of daily maintenance. Summary of the invention

[0008] In view of the problems existing in the above-mentioned prior art, the present invention provides an automatic pressure-regulating intraoperative autologous blood transfusion device. On the one hand, the spiral blades rotate along with the blood flow, thereby automatically driving the delivery ball to rotate and add anticoagulant, thereby improving the mixing uniformity. On the other hand, through the design of two groups of different blood collection needles, the device can be used for different patients, thereby improving the flexibility of the device and reducing the cost.

[0009] To achieve the above purpose, the technical solution adopted by the present invention is: The present application provides a design of an automatic pressure-regulating intraoperative autologous blood transfusion device, comprising: a blood collection component and a blood bag component, wherein a first connecting tube, an anticoagulant adding component and a second connecting tube are connected in sequence between the blood collection component and the blood bag component; the anticoagulant adding component is used to automatically adjust the amount of anticoagulant added according to the blood collection speed; the first connecting tube is provided with a detection component for monitoring real-time pulse and blood pressure; the second connecting tube is provided with a peristaltic pump.

[0010] Furthermore, the anticoagulant addition component includes a syringe, an injection tube and a junction tube connected in sequence; the junction tube is vertically connected to the injection tube, and both ends are respectively sleeved outside the first connecting tube and the second connecting tube.

[0011] Furthermore, the injection tube passes through one end of the merging tube and is rotatably connected to a delivery ball; a spiral component and a valve are provided inside the merging tube; the spiral component is rotatably connected to the second connecting tube; the delivery ball cooperates with the side wall of the spiral component; and the valve is located at the connection between the first connecting tube and the merging tube.

[0012] Furthermore, a plurality of valve flaps are provided at the front end of the valve; the spiral member includes a front support ring, a rear support ring, and a spiral blade arranged between the front support ring and the rear support ring; a valve tube is sleeved inside the rear support ring; and the rear end of the valve tube is sleeved on the valve flap.

[0013] Furthermore, the detection component includes a pulse pressure sensor detector and a vacuum ball; the pulse pressure sensor detector is electrically connected to the peristaltic pump; the vacuum ball is connected to the first connecting tube, and an opening and closing buckle is provided between the vacuum ball and the first connecting tube.

[0014] Furthermore, the blood collection assembly includes an arterial blood collection needle and a venous blood collection needle; the arterial blood collection needle and the venous blood collection needle are respectively connected to the rear end of the first connecting tube through blood collection tubes.

[0015] Furthermore, the blood bag assembly includes two blood bags; the two blood bags are respectively connected to the front end of the second connecting tube through the blood collection tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The blood transfusion device can realize both blood drawing and blood transfusion. Moreover, during the time interval between blood drawing and blood transfusion, anticoagulant is added to the blood bag assembly through the anticoagulant adding assembly to avoid blood coagulation in the blood bag assembly, thereby improving the blood quality of blood transfusion, avoiding secondary packaging of blood, and reducing blood contamination as much as possible.

[0017] 2. High degree of automation: The device realizes the automation of blood collection, anticoagulant addition, detection and storage, reduces human operation errors and reduces the workload of doctors during blood collection and transfusion. The valve disc is bidirectional. When the blood pressure is high, the opening degree is large and the blood circulation speed is fast. When the blood pressure is low, the opening section is small and the blood circulation speed is slow. To a certain extent, the speed of blood collection and transfusion is automatically adjusted according to the pulse pressure.

[0018] 3. Reduce costs and improve flexibility: The connection between the arteriovenous blood collection needle and the two blood bags can be used for patients in different conditions, and can also be adapted to different blood collection locations and usage requirements; the product uses simple materials, has controllable costs, and produces greater effects during use, reducing the economic burden and medical costs for patients.

[0019] 4. Reduce the impact of air in the tube on the blood: The vacuum ball is initially in a flattened state and is made of elastic material. The opening and closing buckle is clamped to maintain a negative pressure state. After the blood collection needle is inserted, before the opening and closing buckle on the blood collection needle tube is opened, the opening and closing buckle before the vacuum ball is opened, its own elastic recovery ability to expand will include the pulse pressure sensor and other air in the tube to be sucked, and it will restore a certain shape according to the designed size. After a period of time, open the opening and closing buckle on the blood collection needle tube, and blood will enter the tube. Observe that the blood exceeds the opening and closing buckle of the vacuum ball and then close the opening and closing buckle. At this time, the remaining air in the tube is at the lowest level. The pulse pressure sensor can monitor real-time pulse and blood pressure, and has a regulating effect on the peristaltic pump during blood transfusion.

[0020] 5. Ensure the quality of blood: When blood flows in the junction tube, it will drive the spiral structure to rotate in the junction tube, and then the delivery ball will deliver a trace amount of anticoagulant into the blood pipeline. The greater the blood flow, the faster the spiral rotates, and the more anticoagulant is delivered, so as to achieve the effect of adding anticoagulant in real time according to the designed ratio, avoiding the problem of too much or too little blood collection affecting the blood storage status when pre-adding anticoagulant.

[0021] 6. The structure is simple, easy to disinfect and clean, and the risks of bacterial proliferation and cross infection are avoided; the first connecting tube and the second connecting tube are detachably connected to the junction tube, so that the device has a high recycling rate, and the transparent junction tube can observe the mixing of blood and anticoagulant in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 A top view of the anticoagulant adding assembly of the present invention; Figure 3 For the present invention Figure 2 Sectional view of the AA plane; Figure 4 For the present invention Figure 3 A magnified view of the structure at B in the middle; Figure 5 It is a structural schematic diagram of the spiral member in the present invention; Figure 6 It is a structural schematic diagram of the valve in the present invention; Figure 7 It is a schematic diagram of the structure of the injection tube in the present invention; Figure 8 For the present invention Figure 7 Sectional view of the middle CC plane; Fig. 9 It is a schematic diagram of the structure of the detection component and the blood collection component in the present invention; Fig.10 It is a schematic diagram of the structure of the blood bag assembly in the present invention.

[0024] In the figure: 1-blood collection component; 11-arterial blood collection needle; 12-venous blood collection needle; 13-blood collection tube; 2-blood bag component; 21-blood bag; 3-detection component; 31-pulse pressure sensor detector; 32-vacuum ball; 4-first connecting tube; 5-anticoagulant addition component; 51-syringe; 52-injection tube; 53-merging tube; 54-transport ball; 55-spiral; 551-front support ring; 552-rear support ring; 553-spiral blade; 56-valve; 561-valve disc; 562-valve tube; 6-second connecting tube; 7-peristaltic pump; 8-opening and closing buckle. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments.

[0026] In the description of the present invention, it is necessary to understand that the terms "front", "rear", "left", "right", "up", "down", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. Example

[0028] Combination Figure 1-10As shown, the present invention provides an automatic pressure-regulating intraoperative autologous blood transfusion device, comprising a blood collection component 1 and a blood bag component 2, wherein a first connecting tube 4, an anticoagulant adding component 5 and a second connecting tube 6 are sequentially connected between the blood collection component 1 and the blood bag component 2; the anticoagulant adding component 5 is located between the first connecting tube 4 and the second connecting tube 6, and is used for automatically adjusting the amount of anticoagulant added according to the blood collection speed; the first connecting tube 4 is provided with a detection component 3 for monitoring real-time pulse and blood pressure; the second connecting tube 6 is provided with a peristaltic pump 7.

[0029] Furthermore, the anticoagulant addition component 5 includes a syringe 51, an injection tube 52 and a junction tube 53 which are connected in sequence; the junction tube 53 is vertically connected to the injection tube 52, and both ends of the junction tube are respectively sleeved outside the first connecting tube 4 and the second connecting tube 6.

[0030] It should be noted that the connecting tube uses a soft medical tube to reduce the resistance caused by bending, the confluence tube 53 uses a transparent tube, and the first connecting tube 4 and the second connecting tube 6 are both detachably connected to the confluence tube 53. The first connecting tube 4 and the second connecting tube 6 are both provided with an opening and closing buckle 8 so that the operation process can be controlled. The syringe 51 is used to store the anticoagulant, and the injection tube 52 transports the anticoagulant from the syringe 51 to the confluence tube 53. The confluence tube 53 is used to mix the anticoagulant with the blood from the first connecting tube 4 and then transport it into the second connecting tube 6.

[0031] Furthermore, the injection tube 52 passes through one end of the confluence tube 53 and is rotatably connected to a delivery ball 54; a spiral 55 and a valve 56 are provided inside the confluence tube 53; the spiral 55 is rotatably connected to the second connecting tube 6; the delivery ball 54 cooperates with the side wall of the spiral 55; the valve 56 is located at the connection between the first connecting tube 4 and the confluence tube 53.

[0032] In this embodiment, a circular hole is opened at the corresponding position of the confluence tube 53 and the delivery ball 54, so that the end of the injection tube 52 just passes through the circular hole, and the outside of the injection tube 52 is sealed. The delivery ball 54 is used to push the anticoagulant into the blood, and the spiral 55 is used to drive the delivery ball 54 to rotate, and can also stir the blood and anticoagulant to make them fully blended. The valve 56 is used to control the flow of blood. The anticoagulant addition component 5 can be provided with multiple syringes 51, injection tubes 52 and delivery balls 54, and multiple anticoagulants are stored in the multiple syringes 51 respectively to meet the needs of different situations.

[0033] Furthermore, a plurality of valve flaps 561 are provided at the front end of the valve 56; the spiral member 55 includes a front support ring 551, a rear support ring 552, and a spiral blade 553 arranged between the front support ring 551 and the rear support ring 552; a valve tube 562 is sleeved in the rear support ring 552; and the rear end of the valve tube 562 is sleeved on the valve flap 561.

[0034] The valve flap 561 is designed to be bidirectional. When the blood pressure is high, the valve flap 561 opens to a large extent and the blood circulates quickly. When the blood pressure is low, the valve flap 561 opens to a small extent and the blood circulates slowly. The speed of blood collection and transfusion is automatically adjusted according to the pulse pressure to a certain extent.

[0035] Furthermore, the detection component 3 includes a pulse pressure sensor detector 31 and a vacuum ball 32; the pulse pressure sensor detector 31 is electrically connected to the peristaltic pump 7; the vacuum ball 32 is connected to the first connecting tube 4, and an opening and closing buckle 8 is also provided between the vacuum ball 32 and the first connecting tube 4.

[0036] The pulse pressure sensor detector 31 is used to detect the pressure of the blood. According to the blood pressure detected by the pulse pressure sensor detector 31, the working state of the peristaltic pump 7 is adjusted to provide appropriate pressure for blood collection. The working state of the peristaltic pump 7 can be adjusted. The peristaltic pump 7 is a prior art and will not be described in detail in this application. The vacuum ball 32 is initially in a flattened state and is made of elastic material. The opening and closing buckle 8 clamps the tube to maintain a negative pressure state. When in use, the blood collection needle is first inserted into the human body. Before the opening and closing buckle 8 on the blood collection tube 13 is opened, the opening and closing buckle 8 in front of the vacuum ball 32 is opened first. The vacuum ball 32 will contain the pulse pressure sensor and the air in other tubes due to its own elastic recovery ability to expand. It will restore its shape and size according to the design. At this time, the vacuum state is maintained in the tube during the blood flow process, and then the opening and closing buckle 8 on the blood collection tube 13 is opened to achieve smooth blood flow. On the basis of the pulse pressure sensor, detection devices for other parameters such as blood oxygen saturation and temperature can be added to provide more vital signs information. The test results are transmitted to the terminal device wirelessly for remote monitoring.

[0037] Working principle: During the blood drawing process, the blood is transported from the blood sampling component 1 to the first connecting tube 4. When the blood passes through the valve 56, it will give pressure to the valve flap 561 to make it open to the front end. The greater the blood flow rate, the greater the valve flap 561 opens. Conversely, the valve flap 561 opens less. When the blood flows through the spiral member 55 through the valve tube 562, it is acted upon by the thrust of the blood and drives the spiral blade 553 to rotate. When the spiral member 55 rotates relative to the junction tube 53, the delivery ball 54 matched with the front support ring 551 rotates relative to the injection tube 52. Due to the viscosity between the liquids, the delivery ball 54 rotates and delivers the anticoagulant in the injection tube 52 to the junction tube 53. Under the combined effect of the vacuum suction and pressure generated by the loss of liquid inside the injection tube 52, the anticoagulant will be automatically delivered to the delivery ball 54. In addition, during the rotation of the spiral member 55, the blood and the anticoagulant can be fully mixed. The rotation of the spiral member 55 can also stir the blood to break up the blood clots, thereby further improving the quality of the blood. When blood is transfused to a human body, the peristaltic pump 7 is controlled to change the blood flow direction, thereby achieving blood transfusion to the human body. Example

[0038] Based on Example 1, refer to Figure 3-10 As shown, in order to further improve the flexibility of the device, the blood collection assembly 1 comprises an arterial blood collection needle 11 and a venous blood collection needle 12; the arterial blood collection needle 11 and the venous blood collection needle 12 are connected to the rear end of the first connecting tube 4 through a blood collection tube 13 respectively.

[0039] The arterial blood collection needle 11 and the venous blood collection needle 12 are connected to the first connecting tube 4 through a blood collection tube 13 with an opening and closing buckle 8. The detection component 3 is connected to the first connecting tube 4 near the blood collection component 1, and an opening and closing buckle 8 is provided on the vacuum ball 32. An opening and closing buckle 8 is provided on the first connecting tube 4 between the detection component 3 and the anticoagulant addition component 5.

[0040] Furthermore, the blood bag assembly 2 includes two blood bags 21 ; the two blood bags 21 are connected to the front end of the second connecting tube 6 through the blood collection tube 13 , respectively.

[0041] A peristaltic pump 7 is connected to the second connecting tube 6 near the blood bag assembly 2. The peristaltic pump 7 is connected to the pulse pressure sensor through its own control unit. The blood sampling tubes 13 connected to the two blood bags 21 are each provided with an opening and closing buckle 8. In addition, at a position close to the peristaltic pump 7, a three-way tube is used to connect the two blood sampling tubes 13 to the second connecting tube 6.

[0042] The two needles are used to collect blood from the patient's artery and vein respectively. The artery is generally located deep, surrounded by many important nerves and blood vessels, making blood collection difficult, and the arterial pressure is high. If the compression and hemostasis are improper after puncture, it is easy to form a hematoma; the vein is located shallow relative to the skin surface, easy to locate and puncture, and the venous pressure is low, so it is relatively easy to stop bleeding after blood collection; the arterial blood collection needle 11 is usually a specially designed special arterial blood collection needle 11, and its needle tip is sharp to reduce damage to the artery. In general, the blood collection tube 13 connected to the arterial blood collection needle 11 is relatively thin and hard. The needle is detachably connected. In addition to the arterial and venous blood collection needles 12, different types of blood collection needles can be added according to actual conditions to meet more different types of surgical needs. The needle part can be used in conjunction with the hospital's automatic insertion device to reduce manual operation and improve safety.

[0043] The blood bag 21 is a special container for storing, transporting and processing blood and its components. The materials used meet strict medical and hygienic standards. The connection between the blood bag 21 and the blood collection tube 13 is detachable. Although the capacity of the two blood bags 21 meets the requirements of pre-stored blood under normal circumstances, the detachable connection can play the role of replacing the blood bag 21 and cleaning the tube. Partitions are set inside the spare blood bag 21 to store blood from different sources separately for subsequent processing, and labels are set to facilitate the identification of blood.

[0044] An automatic pressure-regulating intraoperative autologous blood transfusion device is used in surgeries such as coronary artery bypass surgery, heart valve replacement surgery, total hip replacement surgery, total knee replacement surgery, and other surgeries with high bleeding risks. In orthopedic surgery, especially when large joint replacements are involved, there is often a lot of bleeding. The amount of bleeding during these surgeries is large, and autologous blood transfusion can replenish blood for patients in a timely manner, reduce the demand for allogeneic blood, and reduce the risk of transfusion-related complications.

[0045] Application in obstetrics: Especially in cases where placenta previa, placental abruption, etc. may cause heavy bleeding, autologous blood transfusion can provide safe and effective blood protection for the mother, reduce the infection risk and immune response caused by allogeneic blood transfusion, and is more beneficial to the health of the mother and fetus.

[0046] Special circumstances: For patients with rare blood types (such as Rh-negative blood), it is difficult to obtain enough allogeneic blood during surgery or emergency situations. Autologous blood transfusion can solve the problem of blood shortage and provide timely blood support for patients. Some patients cannot accept allogeneic blood transfusions due to religious beliefs. Autologous blood transfusion can meet their treatment needs while ensuring the safety and effectiveness of treatment. In remote areas with inconvenient transportation and difficult blood supply, autologous blood transfusion can provide blood support for patients in emergency situations to avoid delays in treatment due to waiting for allogeneic blood.

[0047] In addition to the existing surgical fields such as cardiac surgery, orthopedics, and obstetrics and gynecology, autologous blood transfusion technology will be applied in more types of surgeries, such as complex neurosurgery, ENT surgery, and minimally invasive surgery. With the continuous development and innovation of surgical technology, the requirements for blood supply are getting higher and higher. Autologous blood transfusion technology will provide safer and more effective blood guarantee for these surgeries.

[0048] The present application provides an automatic pressure-regulating intraoperative autologous blood transfusion device. When the device is used, the specific operation process is as follows: First, ensure that all parts are complete and intact; confirm that the blood bag 21 is clean, intact, and has been prepared in advance; ensure that the power connection is normal and the power indicator light is on; ensure that the syringe 51 in the anticoagulant addition component 5 is filled with anticoagulant; prepare enough blood collection tubes 13 for connecting the blood collection component 1 and the connecting tube; disinfect all parts that need to be connected to ensure sterile operation. The arterial blood collection needle 11 and the venous blood collection needle 12 are connected to the rear end of the first connecting tube 4 through the blood collection tube 13 respectively; the two blood bags 21 are connected to the front end of the second connecting tube 6 through the blood collection tube 13; according to the doctor's guidance, the arterial blood collection needle 11 is inserted into the patient's artery, or the venous blood collection needle 12 is inserted into the patient's vein; the vacuum ball 32 is connected to the first connecting tube 4 to maintain the vacuum state during the blood flow process. Before the opening and closing buckle 8 on the blood collection tube 13 is opened, the opening and closing buckle 8 in front of the vacuum ball 32 is opened first. The vacuum ball 32 can absorb the air in the pulse pressure sensor and other tubes due to its own elastic recovery ability to expand; open the opening and closing buckle 8 on the blood collection tube 13 to start blood drawing; the spiral member 55 and The second connecting tube 6 is rotated and connected, and the blood and anticoagulant are stirred by the spiral blade 553 to make them fully mixed; the delivery ball 54 rotates at one end of the injection tube 52 to push the anticoagulant into the confluence tube 53; the pulse pressure sensor detector 31 is started to detect the pressure of the blood, and is electrically connected to the peristaltic pump 7 to adjust the working state of the peristaltic pump 7; ensure that the blood flows smoothly; according to the signal of the pulse pressure sensor detector 31, the rotation speed of the peristaltic pump 7 is controlled to ensure that the blood flows smoothly into the blood bag 21 for storage; after completing the blood collection operation, the peristaltic pump 7 is turned off first, and then the anticoagulant addition component 5, the detection component 3, etc. are turned off in turn; the arterial blood collection needle 11 and the venous blood collection needle 12 are carefully pulled out, and the puncture site is disinfected and hemostatic. All disposable parts are disassembled; all reusable parts are cleaned with clean water and disinfectant to ensure thorough cleaning; the cleaned parts are dried or wiped with a clean cloth; all parts are reassembled and stored in a dry and clean environment for next use.

[0049] In summary, although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automatic pressure-regulating intraoperative autologous blood transfusion device, comprising: The blood collection assembly (1) and the blood bag assembly (2) are characterized in that: A first connecting tube (4), an anticoagulant adding assembly (5) and a second connecting tube (6) are sequentially connected between the blood collection assembly (1) and the blood bag assembly (2); The anticoagulant adding component (5) is used to automatically adjust the amount of anticoagulant added according to the blood sampling speed; The first connecting tube (4) is provided with a detection component (3) for monitoring real-time pulse and blood pressure; A peristaltic pump (7) is provided on the second connecting pipe (6).

2. The automatic pressure regulating intraoperative autologous blood transfusion device according to claim 1, characterized in that: The anticoagulant adding assembly (5) comprises a syringe (51), an injection tube (52) and a junction tube (53) which are connected in sequence; The merging tube (53) is vertically connected to the injection tube (52), and two ends thereof are respectively sleeved outside the first connecting tube (4) and the second connecting tube (6).

3. The automatic pressure regulating intraoperative autologous blood transfusion device according to claim 2, characterized in that: One end of the injection tube (52) passing through the junction tube (53) is rotatably connected to a delivery ball (54); The confluence pipe (53) is provided with a spiral member (55) and a valve (56) inside; The spiral member (55) is rotatably connected to the second connecting pipe (6); The conveying ball (54) cooperates with the side wall of the spiral member (55); The valve (56) is located at the connection between the first connecting pipe (4) and the merging pipe (53).

4. The automatic pressure regulating intraoperative autologous blood transfusion device according to claim 3, characterized in that: A plurality of valve flaps (561) are provided at the front end of the valve (56); The spiral member (55) comprises a front support ring (551), a rear support ring (552), and a spiral blade (553) arranged between the front support ring (551) and the rear support ring (552); A valve tube (562) is sleeved inside the rear support ring (552); the rear end of the valve tube (562) is sleeved on the valve flap (561).

5. The automatic pressure regulating intraoperative autologous blood transfusion device according to claim 1, characterized in that: The detection component (3) comprises a pulse pressure sensor detector (31) and a vacuum ball (32); The pulse pressure sensor detector (31) is electrically connected to the peristaltic pump (7); The vacuum ball (32) is connected to the first connecting tube (4), and an opening and closing buckle (8) is provided between the vacuum ball (32) and the first connecting tube (4).

6. The automatic pressure regulating intraoperative autologous blood transfusion device according to claim 1, characterized in that: The blood collection assembly (1) comprises an arterial blood collection needle (11) and a venous blood collection needle (12); The arterial blood collection needle (11) and the venous blood collection needle (12) are respectively connected to the rear end of the first connecting tube (4) via blood collection tubes (13).

7. The automatic pressure regulating intraoperative autologous blood transfusion device according to claim 6, characterized in that: The blood bag assembly (2) comprises two blood bags (21); The two blood bags (21) are connected to the front end of the second connecting tube (6) via the blood collection tubes (13) respectively.

Images