Multipurpose scale support convenient to disassemble and assemble

Abstract

The utility model discloses a multi-purpose scale support convenient to disassemble and assemble, comprising a plasma scale body used for weighing the weight of an object; the bracket main body is fixedly connected with the plasma scale body and extends out of the plasma scale body; the main supporting arms are hinged to the support body and can get close to each other or get away from each other, the at least two main supporting arms extend out of the support body, a space used for containing objects is formed between the two main supporting arms, and the support body is provided with first elastic pieces used for preventing the main supporting arms from rotating; the auxiliary supporting arms are hinged to the main supporting arm and can get close to or get away from each other, the at least two auxiliary supporting arms extend out of the main supporting arm, a space used for containing objects is formed between the two auxiliary supporting arms, and the main supporting arm is provided with a second elastic piece used for preventing the auxiliary supporting arms from rotating. According to the scheme, bagged consumables can be hung through the main supporting arms, and bottle-shaped consumables can also be placed between the two main supporting arms and are fixed in the mode that the two auxiliary supporting arms abut against the bottle-shaped consumables.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of blood collection equipment, in particular to a multi-purpose scale support convenient to dismount. BACKGROUND

[0002] The existing plasma collection consumables are more and more various, not only bag-shaped consumables, but also bottle-shaped consumables, and the specifications are various, the specifications of the bottle neck are different, the specifications of the bottle capacity are different, the traditional scale support is single in function, and it is difficult to meet the requirement of compatible hanging multiple collection consumables, and the stability of some designs that can clamp bottle-shaped consumables is insufficient. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the utility model provides a multi-purpose scale support convenient to dismount, bagged consumables can be hung through the main branch arm, and bottle-shaped consumables can be fixed through the abutment of two auxiliary branch arms.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A multi-purpose scale support convenient to dismount, comprising:

[0006] A plasma scale body for weighing the weight of an object;

[0007] A support body fixedly connected with the plasma scale body and extending out of the plasma scale body;

[0008] Main branch arms hingedly connected to the support body and capable of approaching or moving away from each other, the main branch arms being at least two and extending out of the support body, a space for placing an object being formed between the two main branch arms, and the support body being provided with a first elastic member for impeding the rotation of the main branch arms;

[0009] Auxiliary branch arms hingedly connected to the main branch arms and capable of approaching or moving away from each other, the auxiliary branch arms being at least two and extending out of the main branch arms, a space for placing an object being formed between the two auxiliary branch arms, and the main branch arms being provided with a second elastic member for impeding the rotation of the auxiliary branch arms.

[0010] Preferably, the first elastic member comprises a tension spring, and the main branch arms extend along the length direction of the support body in the natural state of the tension spring.

[0011] Preferably, the second elastic member comprises a torsion spring, and the two auxiliary branch arms extend into the space for placing an object formed by the two main branch arms in the natural state of the torsion spring.

[0012] Preferably, the end of the main branch arm away from the support body is provided with a limiting lifting end for hanging an object.

[0013] Preferably, the end of the limiting hanging and pulling end away from the end of the main supporting arm has a limiting part, and the limiting part is arranged in a diameter expanding manner towards the position of the limiting hanging and pulling end.

[0014] Preferably, the end of the limiting part away from the limiting hanging and pulling end is arranged in a diameter reducing manner.

[0015] Preferably, the side wall of the auxiliary supporting arm away from the supporting body has a first arc surface part recessed towards the inside of the auxiliary supporting arm.

[0016] Preferably, the side wall of the auxiliary supporting arm towards the supporting body has a third arc surface part recessed towards the inside of the auxiliary supporting arm.

[0017] From the above technical solution, it can be seen that the multi-purpose weighing support convenient to disassemble can hang the bagged consumables through the main supporting arm, and can also fix the bottle-shaped consumables by placing the bottle-shaped consumables between the two main supporting arms and abutting the bottle-shaped consumables through the two auxiliary supporting arms. 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 embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0019] Figure 1 is a flow chart for representing a plasma collection method according to an exemplary embodiment;

[0020] Figure 2 is a schematic view of a multi-purpose weighing support convenient to disassemble according to an exemplary embodiment;

[0021] Figure 3 is a schematic view of a blood collection pump structure according to an exemplary embodiment;

[0022] Figure 4 is a schematic view of a tube clamp structure according to an exemplary embodiment;

[0023] Figure 5 is a schematic view of a tube sleeve structure according to an exemplary embodiment; Figure 4 is an enlarged view of A part of the tube sleeve structure;

[0024] Figure 6 is a schematic view of a multi-purpose weighing support structure convenient to disassemble according to an exemplary embodiment;

[0025] Figure 7 is a view of a plasma weighing body structure according to an exemplary embodiment;

[0026] Figure 8 is shown according to an exemplary embodiment Figure 7 is an enlarged view of B portion showing the sub-branch arm structure;

[0027] Figure 9 is a schematic view showing the anticoagulant scale structure according to an exemplary embodiment;

[0028] Figure 10 is a schematic view showing the anticoagulant scale body structure according to an exemplary embodiment;

[0029] Figure 11 is a schematic view showing the damping metal ring structure according to an exemplary embodiment;

[0030] Figure 12 is shown according to an exemplary embodiment Figure 9 is an enlarged view of C portion showing the protection bolt structure;

[0031] Figure 13 is shown according to an exemplary embodiment Figure 10 is an enlarged view of D portion showing the protection cap structure.

[0032] Reference numerals:

[0033] 1, machine body; 11, identity verification module; 12, barcode scanning module; 13, control module; 14, air detector; 15, filter support; 16, pressure sensor; 2, blood sampling pump; 3, anticoagulant pump; 4, red blood cell detector; 5, anticoagulant scale; 51, mounting table; 52, damping support rod; 53, physiological saline scale; 54, anticoagulant scale body; 541, connecting block; 542, hook; 543, pressing plate; 544, damping metal ring; 545, bottom plate; 546, downward pressing type trigger alarm; 547, protection bolt; 548, protection cap; 55, extrusion unit; 551, disassembly pipe opening; 552, transition portion; 56, pump body shell; 561, insertion pipe opening; 57, lifting unit; 58, pipe clamp; 581, pipe sleeve; 582, pipeline; 583, reduced diameter blocking portion; 59, scale body shell; 6, centrifugal module; 7, plasma scale clamp; 71, plasma scale body; 72, support main body; 721, second curved surface portion; 722, tie end; 73, sub-branch arm; 731, first curved surface portion; 732, third curved surface portion; 733, torsional spring mounting groove; 74, main branch arm; 741, clamping portion; 75, limiting hanging and pulling end; 751, limiting portion; 76, tension spring. DETAILED DESCRIPTION

[0034] The utility model discloses a multi -purpose scale support convenient to dismount can be hung through main branch arm to bagged consumables, also can through the bottle -shaped consumables between two main branch arms, and through two vice branch arms abut bottle -shaped consumables and fix.

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the utility model.

[0036] The present disclosure provides a plasma collection system and method, as shown in Figure 1 , which is a flow chart representing a plasma collection method according to an exemplary embodiment; Figure 1 , which is a schematic diagram representing a plasma collection system according to an exemplary embodiment; Figure 2 , which is a schematic diagram representing a blood collection pump structure according to an exemplary embodiment; Figure 3 , which is a schematic diagram representing a tube clamp structure according to an exemplary embodiment; Figure 4 , which is a schematic diagram representing an anti-coagulant scale structure according to an exemplary embodiment; Figure 5 , which is a schematic diagram representing an anti-coagulant scale body structure according to an exemplary embodiment; Figure 4 , which is an enlarged view of A portion representing a tube sleeve structure according to an exemplary embodiment; Figure 6 , which is a schematic diagram representing a multi-purpose scale support structure convenient to dismount according to an exemplary embodiment; Figure 7 , which is a view representing a plasma scale body structure according to an exemplary embodiment; Figure 8 , which is a schematic diagram representing a vice branch arm structure according to an exemplary embodiment; Figure 7 , which is an enlarged view of B portion representing a vice branch arm structure according to an exemplary embodiment; Figure 9 , which is a schematic diagram representing an anti-coagulant scale structure according to an exemplary embodiment; Figure 10 , which is a schematic diagram representing an anti-coagulant scale body structure according to an exemplary embodiment; Figure 11 , which is a schematic diagram representing a damping metal ring structure according to an exemplary embodiment; Figure 12 , which is a schematic diagram representing a protection plug structure according to an exemplary embodiment; Figure 9 , which is an enlarged view of C portion representing a protection plug structure according to an exemplary embodiment; Figure 13 , which is a schematic diagram representing a protection cap structure according to an exemplary embodiment; Figure 10 , which is an enlarged view of D portion representing a protection cap structure according to an exemplary embodiment. The following will be explained with reference to Figures 1 to 13 .

[0037] Some specific embodiments described below are intended to facilitate the understanding of the embodiments by those skilled in the art, and the embodiments are not limited to the specific embodiments described below.

[0038] Referring to Figure 1 and Figure 2 , the present disclosure provides a plasma collection system, comprising:

[0039] a blood pump 2 for conveying blood in a user to a centrifugal module 6 through a pipeline 582;

[0040] the centrifugal module 6 for separating plasma from blood after centrifugation;

[0041] a plasma weighing clamp 7 for fixing a plasma container and for obtaining the weight of the plasma container;

[0042] an air detector 14 for covering part of the pipeline 582 between the user and the centrifugal module 6 and for monitoring air bubbles in the pipeline 582;

[0043] a red blood cell detector 4 for covering part of the pipeline 582 between the centrifugal module 6 and the plasma container and for monitoring the concentration of red blood cells in the blood;

[0044] an anticoagulant weighing scale 5 for providing a fixed position for an anticoagulant container and for obtaining the weight in real time;

[0045] an anticoagulant pump 3 for conveying anticoagulant into the centrifugal module 6;

[0046] a filter support 15 for supporting a filter for replacing part of the pipeline 582 between the blood pump 2 and the centrifugal module 6, the filter being used for filtering air bubbles in the blood in the pipeline 582;

[0047] a control module 13 in communication connection with the anticoagulant pump 3 and the blood pump 2 and for changing the operating speed of the anticoagulant pump 3 and the blood pump 2;

[0048] a pressure sensor 16 in communication connection with the control module 13 and for obtaining the pipeline pressure in real time, the control module 13 changing the operating speed of the anticoagulant pump 3 and the blood pump 2 according to the pipeline pressure.

[0049] For example, referring to Figure 1 and Figure 2 , the plasma collection system comprises a body 1 in the shape of a cube and for being placed at a predetermined blood collection position. The blood pump 2 is fixedly connected to the top surface of the body 1 and located at one side of the body 1, for providing power for the blood in the pipeline 582 to flow along the pipeline 582, part of the entity structure of the blood pump 2 being hidden inside the body 1, the pipeline 582 connection part of the blood pump 2 being exposed above the top surface of the body 1, the blood pump 2 being in communication connection with the control module 13, for example, wireless signal connection or cable communication, the operation of the blood pump 2 being regulated by the control module 13.

[0050] Referring toFigure 3 and Figure 4 The automatic tube dismounting device of the application comprises a lifting unit 57 fixedly connected inside the body 1, a tube clamp 58 fixed to the top end of the lifting unit 57, a tube sleeve 581 capable of being inserted into the tube clamp 58 and transversely clamped with the tube clamp 58, a pump body shell 56 fixed to the top surface of the body 1, and a squeezing unit 55 rotatably connected inside the pump body shell 56. The lifting unit 57 comprises an electric push rod fixedly connected in a vertical posture to the inner wall of the body 1. The piston rod end of the electric push rod extends upward and can be extended out of the top surface of the body 1 and above the body 1.

[0051] With reference to Figure 3 and Figure 5Two pipe insertion openings 561 are formed on the pump body shell 56 for the pipeline 582 to pass through, and the two pipe insertion openings 561 are located on the same side of the pump body shell 56, for example, both of the pipe insertion openings 561 are formed on the side of the pump body shell 56 facing the electric push rod, and the two pipe insertion openings 561 are spaced apart. The inside of the pump body shell 56 is hollow, and both of the pipe insertion openings 561 pass through the pump body shell 56 in the transverse direction, so that the pipeline 582 can extend into one pipe insertion opening 561 and then extend out of the other pipe insertion opening 561. The rotation axis of the extrusion unit 55 is vertically arranged, and the driving part of the extrusion unit 55 is hidden in the inside of the machine body 1, for example, the extrusion unit 55 is realized by a motor rotating on the axis inside the pump body shell 56, and the aforementioned motor is fixedly connected inside the machine body 1 with the output shaft vertically upward. The top edge of the extrusion unit 55 protrudes outward close to the pump body shell 56, and the space for the pipeline 582 to extend into is formed below the top edge of the extrusion unit 55. After the pipeline 582 extends in, it is compressed in sections under the extrusion of the extrusion unit 55, and then drives the medium inside the pipeline 582 to flow along the pipeline 582, that is, the extrusion unit 55 is consistent with the peristaltic pump principle. The top edge of the extrusion unit 55 is provided with a disassembly pipe opening 551 for the pipeline 582 to extend vertically into the inside of the pump body shell 56, and the disassembly pipe opening 551 has two and is spaced apart. The two disassembly pipe openings 551 can correspond to the two pipe insertion openings 561 respectively after the extrusion unit 55 is rotated to a predetermined position. The disassembly pipe opening 551 penetrates part of the top edge of the extrusion unit 55 in the vertical direction and communicates with the inside of the pump body shell 56, and the other part of the top edge of the extrusion unit 55 is gap-fitted with the outer wall of the pump body shell 56. The gap between the aforementioned other part of the top edge of the extrusion unit 55 and the outer wall of the pump body shell 56 is smaller than the outer diameter of the pipeline 582, for example, the outer diameter of the pipeline 582 is 1 cm, and the aforementioned gap between the other part of the top edge of the extrusion unit 55 and the outer wall of the pump body shell 56 can be 5 mm. The top edge of the extrusion unit 55 on one side of the disassembly pipe opening 551 has a transition part 552 in the form of an inclined surface, and the inclined surface of the transition part 552 is arranged away from the pump body shell 56 in the direction of the disassembly pipe opening 551. The transition part 552 extends from the bottom edge of the disassembly pipe opening 551 to the top edge of the disassembly pipe opening 551.

[0052] Referring to Figure 4 and Figure 6The pipe clamp 58 has two, one of which is fixedly connected to the top end of the piston rod of the electric push rod serving as the lifting unit 57, for example, threaded to the top end of the piston rod of the electric push rod, and this pipe clamp 58 is always above the top surface of the body 1, that is, when the piston rod of the electric push rod is retracted to the maximum extent, the aforementioned pipe clamp 58 is also exposed from the top surface of the body 1. The other pipe clamp 58 is fixedly connected to the top surface of the body 1 on the side of the aforementioned pipe clamp 58 fixed to the electric push rod. In order to achieve the sealing of the body 1, a rubber ring or a sealing sleeve structure can also be fixed to the body 1 at the bottom end of the pipe clamp 58, which is used to achieve the sealing of the body 1 at this position by extruding the aforementioned sealing sleeve when the electric push rod is retracted to the maximum extent. The pipe clamp 58 has a c-shaped structure, that is, an opening is formed in the outer wall of the pipe clamp 58 for the pipe 582 to be inserted into the inside of the pipe clamp 58 after being extruded, that is, the opening in the pipe clamp 58 has a diameter-reducing blocking part 583 at one end facing the pump body shell 56. The pipe sleeve 581 is used to be fixedly connected to the pipe 582, for example, when the pipe 582 used is purchased externally, the pipe sleeve 581 can be sleeved on the pipe 582 at a predetermined position and then fixedly connected to the pipe 582 by bonding. After the pipe 582 is installed in the pipe clamp 58, part of the pipe sleeve 581 is also built into the pipe clamp 58, and the end of the pipe sleeve 581 facing the pump body shell 56 abuts against the diameter-reducing blocking part 583. The diameter-reducing blocking part 583 prevents the pipe sleeve 581 from moving towards the pump body shell 56, that is, when the extrusion unit 55 extrudes the pipe 582 between the pump body shell 56 and the extrusion unit 55, the pipe sleeve 581 can overcome the tendency of the pipe 582 to move towards the inside of the pump body shell 56 after being extruded, so that the pipe 582 can maintain the stability of the current position and posture; when the pipe 582 used is matched with the aforementioned pipe clamp 58, the pipe sleeve 581 is already fixed on the pipe 582, and there is no need to fix the pipe sleeve 581 at a predetermined position on the pipe 582. It should be understood that the two pipe clamps 58 can also be fixed with the lifting units 57 respectively, as long as the two pipe clamps 58 can generate a height difference under the drive of the two lifting units 57.

[0053] When the pipeline 582 inside the pump body shell 56 is disassembled, the control extrusion unit 55 is rotated to the position where the disassembly pipe port 551 corresponds to the insertion pipe port 561, at this time, the two disassembly pipe ports 551 correspond to the two insertion pipe ports 561, the electric push rod is controlled to lift one pipe clamp 58, at this time, the pipeline 582 connected to the aforementioned pipe clamp 58 is stretched and lifted, and the pipeline 582 on the aforementioned pipe clamp 58 is lifted from the inside of the insertion pipe port 561 to the inside of the disassembly pipe port 551, with the rotation of the extrusion unit 55, the aforementioned part of the pipeline 582 is abutted by the transition part 552 on the corresponding disassembly pipe port 551 and continuously extruded, and the aforementioned part of the pipeline 582 can be gradually extruded from the gap between the top edge of the extrusion unit 55 and the pump body shell 56 by the transition part 552 with the rotation of the extrusion unit 55, when the extrusion unit 55 rotates one circle, the pipeline 582 originally installed between the pump body shell 56 and the top edge of the extrusion unit 55 can be extruded by the transition part 552, at this time, only the pipe sleeve 581 with the pipeline 582 needs to be taken off from the pipe clamp 58, so that the pipeline 582 can be quickly disassembled. As for the installation of the pipeline 582, since the aforementioned extrusion unit 55, pump body shell 56 and pipe clamp 58 are improved based on the peristaltic pump and blood sampling pump in the prior art, the installation of the pipeline 582 is consistent with the installation mode of the peristaltic pump and blood sampling pump in the prior art, and will not be described here.

[0054] With reference to Figure 1 , the centrifugal module 6 is fixed to the top surface of the machine body 1 and located at the central position of the machine body 1, used for centrifuging the whole blood gathered at the centrifugal module 6 through the pipeline 582, and separating the plasma, the centrifugal module 6 is in communication connection with the control module 13, for example, wireless signal connection or cable communication, and the operation of the centrifugal module 6 is regulated by the control module 13.

[0055] With reference to Figure 1 and Figure 5 , the plasma weighing clamp 7 is fixed to the top surface of the machine body 1 and extends outside the machine body 1 from one side of the machine body 1, used for fixing the plasma container, for example, can hang or clamp the plasma container, the plasma weighing clamp 7 has a weighing function and is in communication connection with the control module 13, for example, wireless signal connection or cable communication, and the control module 13 can know the weight of the plasma in the plasma container according to the signal sent by the plasma weighing clamp 7, and judge whether the blood sampling process is normal or not. For example, the signal representing the weight of the plasma inside the plasma container sent by the plasma weighing clamp 7 to the control module 13 is different from the expected plasma weight calculated by the control module 13 through the number of revolutions of the blood sampling pump 2, or the difference between them exceeds the threshold value, the control module 13 can choose to control the blood sampling pump 2 to stop, or can send an alarm signal to prompt the operator to check.

[0056] With reference to Figure 6 andFigure 7 The plasma scale 7 is a multi-purpose scale support convenient to disassemble and disclosed in the present application, which comprises a plasma scale body 71 fixed inside the machine body 1, a support body 72 fixed at the end of the plasma scale body 71, two main branch arms 74 hinged at the end of the support body 72, and two auxiliary branch arms 73 hinged on the two main branch arms 74. The plasma scale body 71 is fixed in a horizontal posture inside the machine body 1 and extends to the outside of the machine body 1, the support body 72 is fixed and connected to the end of the plasma scale body 71 extending to the outside of the machine body 1 in a horizontal posture, the support body 72 extends along the length direction of the plasma scale body 71, one end of the support body 72 is fixed and connected to one end of the plasma scale body 71, and the other end of the support body 72 extends from the side wall of the machine body 1 to the outside of the machine body 1. The two main branch arms 74 are oppositely distributed on both sides of the end of the support body 72 extending to the outside of the machine body 1, one end of the main branch arm 74 is hinged to the end of the support body 72, and the other end extends to the outside of the machine body 1 in a horizontal posture, and the rotation axis of the main branch arm 74 is vertically arranged. One end of the auxiliary branch arm 73 is hinged on the main branch arm 74, and the other end extends to the inside of the space formed between the two main branch arms 74 and extends to the direction away from the machine body 1.

[0057] Referring to Figure 6 and Figure 8The bracket body 72 is hingedly connected with a pull spring 76. One end of the pull spring 76 is hingedly connected with the bracket body 72, and the other end is hingedly connected with the main support arm 74. The pull spring 76 is in a horizontal posture, and the rotation axis is vertically arranged. The end of the main support arm 74 hingedly connected with the bracket body 72 extends to the space between the two main support arms 74 and is arranged towards the machine body 1, forming a pulling end 722. The pull spring 76 is hingedly connected with the pulling end 722 of the main support arm 74 extending towards the machine body 1. When the pull spring 76 is in a natural state, the two main support arms 74 are arranged along the length direction of the bracket body 72. The ends of the two main support arms 74 away from the machine body 1 are fixedly connected with limiting and pulling ends 75. The limiting and pulling ends 75 are in a horizontal column structure, and the end of the limiting and pulling end 75 away from the bracket body 72 has a limiting portion 751 in a circular truncated cone shape, which is coaxially arranged with the limiting and pulling end 75 and has a horizontal axis. The end of the limiting portion 751 towards the bracket body 72 is arranged in an expanding diameter shape, and the end of the limiting portion 751 away from the bracket body 72 is arranged in a reducing diameter shape. The limiting portion 751 arranged in this way can more easily penetrate into the mounting hole of the plasma container and reduce the possibility of the plasma container falling off the limiting and pulling end 75. When the pull spring 76 is in a natural state, the limiting and pulling end 75 and the limiting portion 751 are in a horizontal posture and extend along the length direction of the bracket body 72. For the plasma container in a cylinder or box shape, the two main support arms 74 and the limiting and pulling end 75 can be separated in a posture away from each other, so as to increase the space between the two main support arms 74, and further enable the plasma container in a cylinder shape to be clamped between the two main support arms 74 or the two limiting and pulling ends 75, and be fixed through the clamping action between the two main support arms 74 or the two limiting and pulling ends 75, or be clamped and supported by the two main support arms 74 or the two limiting and pulling ends 75 to be fixed. In order to further reduce the possibility of the plasma container falling off between the two main support arms 74, the ends of the two main support arms 74 away from the machine body 1 are close to each other to form a clamping portion 741, which is used to reduce the opening size of the space between the two main support arms 74. The torsion spring installation groove 733 is arranged on the auxiliary support arm 73 and extends from the end of the auxiliary support arm 73 hingedly connected with the main support arm 74 to the other end of the auxiliary support arm 73. The torsion spring is arranged in the torsion spring installation groove 733. The torsion spring is sleeved on the rotation shaft of the auxiliary support arm 73. One end of the torsion spring is fixedly connected with the main support arm 74, and the other end is fixedly connected with the auxiliary support arm 73. When the torsion spring is in a natural state, the two auxiliary support arms 73 extend towards the space between the two main support arms 74 and away from the machine body 1. For the plasma container in a cylinder or box shape, after the plasma container enters the space between the two main support arms 74, the two auxiliary support arms 73 are pressed to rotate towards the machine body 1, and at the same time, the two auxiliary support arms 73 apply pressure to the plasma container under the action of the torsion spring, so that the plasma container can more stably stay between the two main support arms 74, increase the abutting points of the plasma container between the two main support arms 74, and reduce the possibility of the plasma container shaking between the two main support arms 74 to fall off.The side wall of the auxiliary supporting arm 73 away from the machine body 1 is provided with a first arc surface part 731 for accommodating the cylindrical plasma container, which increases the contact area between the auxiliary supporting arm 73 and the plasma container. For the cylindrical plasma container with a smaller volume, the end of the supporting body 72 away from the machine body 1 is provided with a second arc surface part 721, and the side wall of the auxiliary supporting arm 73 towards the machine body 1 is provided with a third arc surface part 732. The cylindrical plasma container with a smaller volume can continue to enter the space between the two auxiliary supporting arms 73 after entering the space between the two main supporting arms 74. The two auxiliary supporting arms 73 rotate outward in a mutually separated manner after being pressed, and the second arc surface part 721 and the third arc surface part 732 respectively increase the contact area with the plasma container, so that the plasma container can be more stably fixed at the current position.

[0058] There are multiple air detectors 14, which can be fixed to the side wall of the machine body 1 or the top surface of the machine body 1. The position of the air detector 14 can be adaptively set according to the pipeline 582 to be detected by the air detector 14. At least one air detector 14 is located between the user and the filter support 15, and at least one air detector 14 is located between the filter support 15 and the blood collection pump 2. The air detector 14 is in communication connection with the control module 13, for example, wireless signal connection or cable communication. The control module 13 can determine whether there is a bubble affecting the blood collection process in the current section of the pipeline 582 according to the detection signal sent by the air detector 14, and change the expected plasma weight calculated by the number of rotations of the blood collection pump 2 in real time according to the signal indicating the bubble. For some bubbles that do not affect the blood collection process, they can be ignored. For bubbles that may affect the blood collection process, the control module 13 can control the blood collection pump 2 to stop or send an alarm signal to prompt the operator to check. The operator can set the judgment rule of the bubble affecting the blood collection process, such as the size of the bubble or the total amount of the bubble per unit time.

[0059] The red blood cell detector 4 is fixed to the top surface of the machine body 1 and located on one side of the machine body 1. The red blood cell detector 4 is separately arranged on the opposite sides of the top surface of the machine body 1 with the blood collection pump 2, and the red blood cell detector 4 is located between the centrifugal module 6 and the plasma scale clamp 7. The red blood cell detector 4 can detect the plasma flowing out after being centrifuged by the centrifugal module 6, and can timely alarm when red blood cells overflow. The red blood cell detector 4 is in communication connection with the control module 13, for example, wireless signal connection or cable communication. The control module 13 can control the blood collection pump 2 to stop in time after obtaining the red blood cell overflow signal sent by the red blood cell detector 4, so as to reduce the possibility of contamination of the plasma by the overflowed red blood cells.

[0060] Reference Figure 9 and Figure 10The anticoagulant scale 5 is fixed on the body 1 and extends from the top surface of the body 1 to above the body 1, has a weighing function and is in communication connection with the control module 13, for example, wireless signal communication or cable communication, the signal sent by the anticoagulant scale 5 can represent the weight of the remaining anticoagulant, that is, the weight of the anticoagulant injected into the pipeline 582, since the anticoagulant enters the centrifugal module 6 together with the whole blood and flows into the inside of the plasma container after centrifugation, the control module 13 can obtain a more accurate judgment of the weight of the plasma in the plasma container, reducing the possibility of false alarm or overtime alarm.

[0061] With reference to Figure 9 and Figure 10 The anticoagulant scale 5 is a rotating scale with adjustable height and mute function disclosed in the present application, which comprises a damping support rod 52 fixedly connected with the body 1, a scale body shell 59 rotatably connected to the top end of the damping support rod 52, an anticoagulant scale body 54 fixedly arranged in the inside of the scale body shell 59, a lifting hook 542 fixedly arranged and extending out of the scale body shell 59, and a protection device fixedly arranged in the inside of the scale body shell 59 for limiting the maximum deformation position of the anticoagulant scale body 54. The anticoagulant scale body 54 is the same as the scale body used in the blood collection device in the prior art, and thus will not be described again. In order to connect the lifting hook 542 with the anticoagulant scale body 54 and realize the weighing and lifting hook 542 functions of the anticoagulant scale body 54, the hook-shaped bottom end of the lifting hook 542 extends out of the scale body shell 59 from the bottom wall of the scale body shell 59, the top end of the lifting hook 542 extends into the inside of the scale body shell 59 and is screw-connected with a connecting block 541, the connecting block 541 is in a horizontally arranged L-shaped structure and is attached to the anticoagulant scale body 54, and is screw-fixed on the anticoagulant scale body 54.

[0062] With reference to Figure 10 and Figure 11The damping support rod 52 is in a vertical posture, the bottom end of the damping support rod 52 extends into the inside of the machine body 1 and is fixedly connected to the inner wall of the machine body 1, the top end of the damping support rod 52 extends upward above the machine body 1, the top end of the damping support rod 52 is coaxially fixedly connected with a horizontally arranged bottom plate 545, the damping support rod 52 penetrates the bottom plate 545 along the length direction of the damping support rod 52, a wave-shaped bent damping metal ring 544 is coaxially sleeved on the bottom plate 545, the bottom surface of the weighing body shell 59 abuts against the damping metal ring 544, the top end of the damping support rod 52 penetrates the weighing body shell 59 along the vertical direction and extends into the inside of the weighing body shell 59, a pressing plate 543 abutting against the inner bottom wall of the weighing body shell 59 is bolted in the inside of the weighing body shell 59, the pressing plate 543 is fixed to the top end of the damping support rod 52 by bolts, that is, the weighing body shell 59 and the damping support rod 52 can relatively rotate, the weighing body shell 59 is supported on the damping support rod 52 through the wave-shaped bent damping metal ring 544, the weighing body shell 59 always exerts pressure on the damping metal ring 544, the damping metal ring 544 is always in a deformed state, the material of the damping metal ring 544 can be spring steel or elastic alloy, the damping support rod 52 enables the weighing body shell 59 and the anti-coagulation weighing body 54 to stay at the expected height, the damping metal ring 544 enables the weighing body shell 59 and the anti-coagulation weighing body 54 to rotate relative to the damping support rod 52 and stably stay at the current position and keep the current posture.

[0063] With reference to Figure 12 And Figure 13The bottom wall of the scale body 59 has an upwardly protruding mounting platform 51, and the end of the anticoagulant scale body 54 away from the hook 542 is fixed to the mounting platform 51. The protection device is located on the bottom wall of the scale body 59 on the side of the mounting platform 51. Due to the presence of the mounting platform 51, the protection device can be hidden below the bottom surface of the anticoagulant scale body 54. The protection device includes a protection pin 547 threadedly connected to the scale body 59 and extending into the interior of the scale body 59. The head of the protection pin 547 abuts against the bottom wall of the scale body 59, and the threaded tail end of the protection pin 547 extends vertically through the bottom wall of the scale body 59 to the interior of the scale body 59. By rotating the protection pin 547, the height of the protection pin 547 extending into the scale body 59 can be changed. Above the threaded tail end of the protection pin 547 corresponds to the anticoagulant scale body 54. When the object weighed by the anticoagulant scale body 54 is within the calibrated weighing range, a gap is formed between the threaded tail end of the protection pin 547 and the bottom surface of the anticoagulant scale 5. When the object weighed by the anticoagulant scale body 54 is greater than the maximum calibrated weight, the anticoagulant scale body 54 bends under the action of gravity towards the hook 542. At this time, the protection pin 547 abuts against the bottom surface of the anticoagulant scale body 54 to provide support for the anticoagulant scale body 54 and prevent the anticoagulant scale body 54 from being damaged by excessive force. In order to enable the protection pin 547 to be more stably maintained at the current position and current height, a protection cap 548 with a vertical axis is provided on the bottom wall inside the scale body 59. The protection cap 548 is threadedly connected to the protection pin 547 and abuts against the interior bottom wall of the scale body 59. The threaded tail end of the protection pin 547 is exposed from the top end of the protection cap 548. The protection cap 548 is used to fix the protection pin 547 at the current position.

[0064] With reference to Figure 12 and Figure 13 In order to be able to discover in time when the object weighed by the anticoagulant scale body 54 is greater than the maximum calibrated weight, a downward-pressing trigger alarm 546 is fixedly connected to the bottom wall inside the scale body 59. Since the alarm of the downward-pressing trigger alarm 546 needs to be pressed for a certain stroke to trigger, the downward-pressing trigger alarm 546 is located between the protection pin 547 and the hook 542. When the downward-pressing trigger alarm 546 alarms, the protection pin 547 can just provide support for the anticoagulant scale body 54 to reduce the possibility of damage to the anticoagulant scale body 54.

[0065] The anticoagulant pump 3 is fixed on the top surface of the body 1 and located at one side of the blood collection pump 2, the position of the anticoagulant pump 3 corresponds to the position of the anticoagulant scale 5, the anticoagulant pump 3 is in communication connection with the control module 13, for example, wireless signal communication or cable communication, the anticoagulant pump 3 is regulated by the control module 13, the control module 13 can calculate the weight of the anticoagulant injected into the pipeline 582 according to the number of revolutions of the anticoagulant pump 3, and can obtain more accurate judgment of the weight of the plasma in the plasma container by combining the signal representing the weight of the anticoagulant injected into the pipeline 582 sent by the anticoagulant scale 5, thereby reducing the possibility of false alarm or timeout alarm. The structure of the anticoagulant pump 3 is the same as that of the blood collection pump 2 described above, and will not be described again.

[0066] The filter support 15 is fixed in a vertical posture on the side wall of the body 1 and located at one side of part of the air detector 14, the filter support 15 is used to fix the filter on the consumable, and the filter on the consumable is used to filter the air bubbles in the blood in the pipeline. The outlet end pipeline 582 of the filter on the filter support 15 is fixed with the air detector 14, which is used to reduce the possibility that the air bubbles generated after the blood passes through the filter on the filter support 15 are not discovered in time, thereby negatively affecting the blood collection process.

[0067] The pressure sensor 16 is fixed on the side wall of the body 1 and located at one side of the filter support 15, the pressure sensor 16 obtains the pressure in the pipeline 582 in real time, when the pressure in the pipeline 582 increases or decreases, the control module 13 can select to control the speed of the blood collection pump 2 to decrease or increase according to the signal fed back by the pressure sensor 16. For example, when the pressure of the pipeline 582 exceeds the threshold value, the speed of the blood collection pump 2 is continuously reduced until the pressure returns to normal; when the pressure of the pipeline 582 is less than the threshold value, the speed of the blood collection pump 2 is continuously increased until the pressure returns to normal; when the pressure of the pipeline 582 is in the expected range, the blood collection pump 2 operates at the maximum speed.

[0068] The control module 13 is fixed on the body 1 and has a touchable input display which extends above the body 1 from the top surface of the body 1, through the touchable input display, the operator can modify the control logic, parameters and other information of the control module 13, and modify the relevant parameters of each component in real time according to the display on the touchable input display during the blood collection process.

[0069] In this embodiment, when blood is collected, a pipeline 582 is connected to the blood collection pump 2, the pipeline 582 has a blood collection needle at the end and is connected to the blood vessel of the user (i.e. the blood donor), the blood collection pump 2 operates to transport the blood in the pipeline 582, the blood in the pipeline 582 passes through the air detector 14, the filter on the filter support 15, the pressure sensor 16, the blood collection pump 2, the centrifugal module 6 and the red blood cell detector 4 in turn and enters the inside of the plasma container fixed on the plasma scale clamp 7, in this process, the anticoagulant fixed on the anticoagulant scale 5 is transported into the inside of the centrifugal module 6 under the action of gravity and the anticoagulant pump 3 and is centrifuged together after mixing with the blood, and finally the mixed liquid of the plasma and the anticoagulant enters the inside of the plasma container. Among them, the pressure sensor 16 monitors the pressure in the pipeline 582 in real time and feeds back to the control module 13, the air detector 14 detects the air bubble condition in the current paragraph of the pipeline 582 in real time and feeds back to the control module 13, the rotating speed and the number of revolutions of the blood collection pump 2 are fed back to the control module 13 in real time, the operation condition of the centrifugal module 6 is fed back to the control module 13 in real time, the red blood cell detection result of the pipeline 582 is fed back to the control module 13 in real time, the plasma scale clamp 7 feeds back the weight information to the control module 13 in real time, the anticoagulant scale 5 feeds back the weight information to the control module 13 in real time, and the anticoagulant pump 3 feeds back the rotating speed and the number of revolutions to the control module 13 in real time. The control module 13 displays the information fed back by the above-mentioned components on the touchable input type display screen, calculates whether the current blood collection process is in the expected state according to the information fed back by the above-mentioned components, and when the blood collection process deviates from the expected state, the control module 13 alarms on the touchable input type display screen and can choose to control the blood collection pump 2 and the anticoagulant pump 3 to stop. By automatically collecting and centrifuging the blood, separating the plasma, and transporting the red blood cells, the traditional manual collection method is replaced, the burden of medical personnel is reduced, the blood collection efficiency is accelerated, and the whole blood collection process is completed in a closed circulation environment, avoiding the possibility of cross infection; at the same time, the pipeline pressure in the blood collection process is monitored in real time, the blood collection speed is changed according to the change of the pipeline pressure, so that the blood collection process can adapt to the change of the physiological state of the user, and the discomfort of the user in the blood collection process is reduced.

[0070] In an example embodiment of the present disclosure, referring to Figure 1 The identity verification module 11 is in communication connection with the control module 13 and is used to acquire at least the identity information and / or biological information of the user.

[0071] For example, referring to Figure 1The identity authentication module 11 includes a sensor fixed on the body 1 and having an NFC reading function. The identity authentication module 11 is usually arranged at the top surface of the body 1 where the side wall meets, so as to facilitate the user or operator to use. The identity authentication module 11 is in communication connection with the control module 13, for example, wireless signal connection, or cable communication, for example, by reading the user's identity card, the age, gender, height, weight, medical history and other information of the user can be obtained through networking, and after the foregoing information is fed back to the control module 13, the control module 13 can select a blood donation strategy suitable for the current user in the preset database, for example, a specific blood collection speed, a specific blood collection amount, etc. In addition, the control module 13 can also display the user information obtained by the identity authentication module 11 on the touch input display, so that the operator (for example, a doctor or a nurse) can compare whether the blood donor is consistent with the registered information.

[0072] In the embodiment, the identity authentication module 11 can also be a fingerprint recognition device or a face recognition device, for example, an infrared fingerprint sensor, which can obtain the identity information and historical physiological health status of the user from the database by scanning the fingerprint of the user, and display the information on the touch input display, so that the operator can compare whether the blood donor is consistent with the registered information.

[0073] In an example embodiment of the present disclosure, referring to Figure 1 The barcode scanning module 12 is in communication connection with the control module 13, and is used to match the identity information with the barcode information after obtaining the barcode information of the plasma container.

[0074] For example, referring to Figure 1 The barcode scanning module 12 includes a sensor fixed on the body 1 and having an infrared scanning function, for example, fixed on one side of the identity authentication module 11. The barcode scanning module 12 is in communication connection with the control module 13, for example, wireless signal connection, or cable communication. The barcode scanning module 12 feeds back the current plasma container information to the control module 13 by scanning the barcode on the plasma container, and the control module 13 can match the current plasma container information with the user information obtained by the identity authentication module 11, so as to distinguish the plasma obtained from different users. In addition, the barcode scanning module 12 can also scan the barcode on the anticoagulant container and feed back to the control module 13 for record, and the control module 13 can calculate the expected amount of anticoagulant according to the blood donation strategy provided to the current user. When the remaining anticoagulant is insufficient to support the blood donation process of the current user after the blood donation of the previous user is completed, the control module 13 can display a prompt information on the touch input display, or the control module 13 can control the blood collection pump 2 to keep in a parking state and refuse to start blood collection.

[0075] In an example embodiment of the present disclosure, referring to Figure 1The control module 13 is configured to change the operating speed of the blood sampling pump 2 according to the identity information and / or biological information of the user.

[0076] For example, referring to Figure 1 The vital sign sensing device can also be arranged on the user to obtain information such as the heart rate, blood pressure, and breathing rate of the user, and the vital sign sensing device is in communication connection with the control module 13, for example, wireless signal connection or cable communication. The vital sign sensing device transmits the vital sign information of the user to the control module 13 in real time, and the control module 13 determines the current blood sampling strategy of the user according to the pre-built blood sampling scheme, and then adjusts the rotating speed of the blood sampling pump 2 and the anticoagulant pump 3 in real time.

[0077] In this embodiment, the pressure sensor 16 can feed back the pipeline pressure to the control module 13, and the control module 13 can control the blood sampling pump 2 according to the pipeline pressure fed back by the pressure sensor 16 and the signal fed back by the vital sign sensing device. For example, after blood sampling starts, the pressure of the pipeline 582 is monitored in real time, the pipeline pressure is represented by the height of the mercury column, and the initial speed of the blood sampling pump 2 is set to 100 rpm:

[0078] When the pressure of the pipeline 582 is less than -80 mmHg, blood sampling is stopped;

[0079] When -79 mmHg < the pressure of the pipeline 582 < -51 mmHg, the speed of the blood sampling pump 2 is increased, and the speed of the blood sampling pump 2 is increased by 100 / (-51-(-79)) rpm each time the pressure of the pipeline 582 is increased by 1 mmHg;

[0080] When -50 mmHg < the pressure of the pipeline 582 < 50 mmHg, the blood sampling pump 2 operates at the initial speed of 100 rpm;

[0081] When 51 mmHg < the pressure of the pipeline 582 < 79 mmHg, the speed of the blood sampling pump 2 is decreased, and the speed of the blood sampling pump 2 is decreased by 100 / (79-51) rpm each time the pressure of the pipeline 582 is increased by 1 mmHg;

[0082] When the pressure of the pipeline 582 is less than or equal to 80 mmHg, blood sampling is stopped.

[0083] For example, referring to Figure 1 The physiological saline container is provided with a physiological saline scale 53 for providing a fixed position and obtaining the weight in real time. The blood sampling pump 2 has a reverse working state, and when the blood sampling pump 2 is reversed, the physiological saline is flushed through the pipeline 582 to the centrifugal module 6 and then to the user.

[0084] For example, referring to Figure 1The physiological saline scale 53 is fixed on the body 1 and extends above the body 1 from the top surface of the body 1, and the physiological saline scale 53 and the anticoagulant scale 5 are arranged on opposite sides of the body 1. The physiological saline scale 53 is in communication connection with the control module 13, for example, wireless signal connection or cable communication. The physiological saline scale 53 feeds back the weight of the physiological saline remaining in the physiological saline container to the control module 13, so that the control module 13 determines the weight of the used physiological saline and can determine the progress of the return process accordingly. It should be understood that the physiological saline flows into the inside of the centrifugal module 6 by gravity, and therefore there must be a valve body on the body 1 which is controlled to be started or stopped by the control module 13. The physiological saline scale 53 has the same structure as the anticoagulant scale 5 described above, and therefore will not be described again.

[0085] When the pressure sensor 16 monitors the pressure of the pipeline 582 in real time during the reverse return of the blood collection pump 2, for example, the pipeline pressure is represented by the height of the mercury column, and the initial speed of the blood collection pump 2 is set to 100 rpm:

[0086] When the pressure of the pipeline 582 is greater than or equal to 260 mmHg, the return is stopped;

[0087] When the pressure of the pipeline 582 is greater than 101 mmHg and less than 259 mmHg, the speed of the blood collection pump 2 is controlled to be reduced, and for each 1 mmHg increase in the pressure of the pipeline 582, the speed of the blood collection pump 2 is reduced by 100 / (259-101) rpm;

[0088] When the pressure of the pipeline 582 is greater than 0 mmHg and less than 100 mmHg, the blood collection pump 2 operates at 100 rpm;

[0089] When the pressure of the pipeline 582 is less than 0 mmHg, the return is stopped.

[0090] In an example embodiment of the present disclosure, with reference to Figure 1 The anticoagulant scale 5 has a first starting weight which is the same as the initial weight of a unit of anticoagulant, and the anticoagulant scale 5 allows the control module 13 to start the blood collection pump 2 after the consumables with the first starting weight are fixed.

[0091] For example, with reference to Figure 1 The physiological saline scale 53 has a second starting weight which is the same as the initial weight of a unit of physiological saline, and the physiological saline scale 53 allows the control module 13 to start the blood collection pump 2 after the consumables with the second starting weight are fixed, and the first starting weight is different from the second starting weight.

[0092] In this embodiment, on the other hand, an example embodiment of the present disclosure also discloses a blood plasma collection method, comprising the following steps:

[0093] S100, confirming the identity and biological information of the user, and selecting a blood donation mode from a preset database;

[0094] S200, detecting and monitoring the physiological indicators of the user in real time, and matching the blood donation suggestion from the preset database according to the current physical state of the user;

[0095] S300, after the blood collection starts, the blood pump rotates to transport the blood in the pipeline to the centrifugal module, the anticoagulant pump transports the anticoagulant to the centrifugal module, and the blood is transported to the inside of the plasma container after centrifugation; the running number of the blood pump and the anticoagulant pump and the weight change of the remaining anticoagulant are monitored in real time, and the whole blood volume and the anticoagulant amount in the centrifugal module are calculated; the weight of the plasma container is obtained in real time, and when the calculated result and the obtained weight of the plasma container differ by more than a threshold value, the blood collection is stopped;

[0096] S400, after the blood collection starts, the pressure in the pipeline is monitored in real time;

[0097] When the pipeline pressure exceeds the threshold value, the speed of the blood pump is continuously reduced until the pressure returns to normal;

[0098] When the pipeline pressure is less than the threshold value, the speed of the blood pump is continuously increased until the pressure returns to normal;

[0099] When the pipeline pressure is in the expected range, the blood pump operates at the maximum speed;

[0100] After the blood collection starts, when the physiological indicators of the user are abnormal, the speed of the blood pump and the anticoagulant pump is adjusted; when the physiological indicators of the user are still not expected, the blood collection is stopped or the blood is started to be returned;

[0101] After the blood collection starts, the pipeline at the outlet of the centrifugal module is monitored in real time, and when red blood cells are detected to overflow, the blood collection is stopped;

[0102] S500, after detecting the plasma of the predetermined weight of the plasma container, stopping the blood collection, flushing the centrifugal module with physiological saline, and returning the remaining blood in the pipeline and the centrifugal module to the blood pump.

[0103] For example, referring to Figure 1 , step S100 specifically includes: reading the identity card of the user through an identity verification module, such as a sensor with nfc function, and obtaining the identity information and historical physiological health information of the user, such as historical medical conditions, from the database, which can be displayed on a touchable input display screen for the operator to confirm, and selecting an appropriate blood donation strategy in the built-in database of the control module for the operator to confirm.

[0104] Step S200 specifically comprises: setting a vital sign sensing device on the user, for example, acquiring the heartbeat, blood pressure, respiratory rate and other information of the current blood sampling user, the vital sign sensing device is in communication connection with the control module, for example, wireless signal connection, or cable communication. The vital sign sensing device transmits the vital sign information of the user to the control module in real time, the control module determines the current blood sampling strategy of the user through the pre-built blood sampling scheme, and then adjusts the rotating speed of the blood sampling pump and the anticoagulant pump in real time. The pressure sensor can feedback the pipeline pressure to the control module, that is, the pressure sensor can also monitor and feedback the real-time physiological indicators of the user, and the control module can regulate and control the blood sampling pump according to the pipeline pressure feedback by the pressure sensor and the signal feedback by the vital sign sensing device.

[0105] Step S300 specifically comprises: one end of the blood sampling needle connected with the user on the pipeline, the blood in the user's body enters the inside of the pipeline, and under the action of the running blood sampling pump, it is transported to the centrifugal module, at the same time, the anticoagulant is transported to the inside of the centrifugal module under the action of the anticoagulant pump, and mixed with the blood in the pipeline inside the centrifugal module, the mixed whole blood is separated into plasma after centrifugation by the centrifugal module, and the plasma flows into the inside of the plasma container along the pipeline.

[0106] Step S400 specifically comprises: after blood sampling starts, the pressure of the pipeline is monitored in real time, the pipeline pressure is represented by the height of mercury column, and the initial speed of the blood sampling pump is set as V (rpm):

[0107] When the pipeline pressure is less than -80mmHg, stop blood sampling;

[0108] When -79mmHg< pipeline pressure< -51mmHg, control the blood sampling pump to increase the running speed, and the speed of the blood sampling pump increases V / (-51-(-79)) every time the pipeline pressure increases 1mmHg;

[0109] When -50mmHg< pipeline pressure< 50mmHg, the blood sampling pump runs at the initial speed V;

[0110] When 51mmHg< pipeline pressure< 79mmHg, control the blood sampling pump to reduce the rotating speed, and the speed of the blood sampling pump decreases V / (79-51) every time the pipeline pressure increases 1mmHg;

[0111] When the pipeline pressure is less than or equal to 80mmHg, stop blood sampling.

[0112] The step S500 specifically comprises that the plasma container is fixed on a plasma scale clamp with a weighing function, the weight of the plasma in the plasma container can be acquired in real time by setting a skinning for the plasma scale clamp or presetting the weight of the empty plasma container in the control module, when the weight signal fed back by the plasma scale clamp to the control module reaches a preset threshold, the control module can decide to stop the blood collection action, that is, control the blood collection pump and the anticoagulant pump to stop, and at the same time, the control module can send an opening instruction to the valve body which decides whether the physiological saline enters the inside of the centrifugal module, so that the physiological saline fixed at a position higher than the centrifugal module enters the inside of the centrifugal module, that is, the inside of the centrifugal module is flushed, and the physiological saline can also be returned to the user together with the whole blood separated from the plasma to supplement the liquid for the user.

[0113] In the step S400 in the embodiment, when the blood collection pump is reversed for return, the pressure of the pipeline is monitored in real time, the pipeline pressure is represented by the height of mercury column, and the initial speed of the blood collection pump is set as v (rpm) :

[0114] When the pipeline pressure is greater than or equal to 260 mmHg, the return is stopped;

[0115] When 101 mmHg < pipeline pressure < 259 mmHg, the speed of the blood collection pump is controlled to be reduced, the speed of the blood collection pump is reduced by V / (259-101) every time when the pipeline pressure is increased by 1 mmHg;

[0116] When 0 mmHg < pipeline pressure < 100 mmHg, the blood collection pump is operated at the maximum speed;

[0117] When the pipeline pressure is less than 0 mmHg, the return is stopped.

[0118] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-purpose scale stand which is easy to assemble and disassemble, characterized in that, The utility model relates to a kind of plasma balance, including: Plasma balance (71) for weighing the weight of object; Support body (72) is fixedly connected with the plasma balance (71), and extends outside the plasma balance (71); Main branch arm (74) is hinged on the support body (72) and can be close to each other or away from each other, the main branch arm (74) at least two and all extend outside the support body (72), two main branch arms (74) form space for placing objects between them, the support body (72) has first elastic member for impeding the rotation of the main branch arm (74); Sub-branch arm (73) is hinged on the main branch arm (74) and can be close to each other or away from each other, the sub-branch arm (73) at least two and all extend outside the main branch arm (74), two sub-branch arms (73) form space for placing objects between them, the main branch arm (74) has second elastic member for impeding the rotation of the sub-branch arm (73).

2. The multi-purpose scale stand of claim 1, wherein, The first elastic member includes a tension spring (76), and the main branch arm (74) extends along the length direction of the support body (72) when the tension spring (76) is in a natural state.

3. The multi-purpose scale stand of claim 1, wherein, The second elastic member includes a torsion spring, and the two sub-branch arms (73) extend inside the space for placing objects formed by the two main branch arms (74) when the torsion spring is in a natural state.

4. The multi-purpose scale stand of claim 1, wherein, The end of the main branch arm (74) away from the support body (72) has a limiting lifting end (75) for hanging objects.

5. The multi-purpose scale stand of claim 4, wherein, The end of the limiting lifting end (75) away from the main branch arm (74) has a limiting portion (751), and the limiting portion (751) is arranged in a diameter-expanded manner towards the position of the limiting lifting end (75).

6. The multi-purpose scale stand of claim 5, wherein, The end of the limiting portion (751) away from the limiting lifting end (75) is arranged in a diameter-reduced manner.

7. The multi-purpose scale stand of claim 1, wherein, The side wall of the sub-branch arm (73) away from the support body (72) has a first arc surface portion (731) recessed towards the inside of the sub-branch arm (73).

8. The multi-purpose scale stand of claim 1, wherein, The side wall of the sub-branch arm (73) towards the support body (72) has a third arc surface portion (732) recessed towards the inside of the sub-branch arm (73).

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