A blood sampling device and a blood sampling method

Abstract

The present application is applicable to the technical field of blood sampling equipment, and provides a blood sampling equipment and a blood sampling method. The blood sampling equipment includes a breaking mechanism, a first buckle mechanism, a peristaltic pump, and at least two heat-sealing mechanisms; the breaking mechanism and the heat-sealing mechanism are both arranged along the blood sampling tube line, the first buckle mechanism and the peristaltic pump are both arranged along the blood sampling tube line, and the first buckle mechanism and the peristaltic pump are both arranged between the breaking mechanism and the blood storage bag; the peristaltic pump can pump the liquid in the blood storage bag to the blood sampling tube line. After the blood sampling is completed, the peristaltic pump arranged along the blood sampling tube line can pump the liquid in the blood storage bag to the blood sampling tube line, the first buckle mechanism, the breaking mechanism and the heat-sealing mechanism can tear the blood sampling tube line apart, and before the heat-sealing mechanism heat-seales the blood sampling tube line to form a blood braid, the peristaltic pump is used to pump part of the blood in the blood storage bag to the blood sampling tube line, and this part of the blood has been fully mixed with the anticoagulant pre-stored in the blood storage bag to prevent the blood in the blood braid from coagulating during the storage process.

Description

Technical Field

[0001] The present application relates to the technical field of blood sampling equipment, and in particular to a blood sampling equipment and a blood sampling method. Background Art

[0002] Extracorporeal blood transfusion plays an irreplaceable role in treating traumatic bleeding, postpartum hemorrhage, severe burns, various blood diseases, and the wounded and patients undergoing surgical operations. Blood cannot be artificially produced and can only be obtained through blood donations from healthy and appropriate-age people. Blood donation has become an important means for modern medicine to obtain medical resources. For medical and health and safety reasons, blood in all blood bags needs to be sampled for testing. Therefore, blood bags with side bags are often used when receiving blood donations. The blood in the side bags is mainly used for testing, while the blood in the main bag is stored until it is used for transfusion.

[0003] In the traditional scheme, in order to improve the utilization efficiency of medical resources, after blood is collected using a blood bag, the pipeline connecting the human body and the blood bag will be heat-sealed to form several sections of blood braids. The blood braids will be stored together with the blood bag. Before using the blood in the blood bag for blood transfusion, the blood in the blood braids can be used for various tests and cross-matching. However, since the blood in the blood braids cannot be fully mixed with the anticoagulant, the blood in the blood braids is easy to coagulate during storage. At this time, only the blood in the blood bag can be used for testing, cross-matching, etc.; after sampling from the blood bag, the sealing of the blood bag is destroyed. If the blood cannot be matched with the wounded or patients, it will lead to a serious waste of medical resources. Summary of the invention

[0004] The purpose of the present application is to provide a blood collection device, aiming to solve the technical problem that the blood in the blood pigtail is easily coagulated after the traditional blood collection device collects the blood.

[0005] The present application is implemented as follows: a blood collection device is used to transport blood along a blood collection line to a blood storage bag, characterized in that it includes a peristaltic pump and at least two heat sealing mechanisms; the heat sealing mechanism is arranged along the blood collection line, and the peristaltic pump is arranged along the blood collection line; the peristaltic pump can pump the liquid in the blood storage bag to the blood collection line.

[0006] In one embodiment of the present application, the peristaltic pump includes a fixed seat, a first driving member connected to the fixed seat, a second driving member connected to the fixed seat, a roller assembly, and a clamping assembly connected to the second driving member; the roller assembly includes a rotating frame hinged to the first driving member, and a tube pressing rod connected to the rotating frame, the rotating frame can rotate around a first rotating axis, the tube pressing rod is arranged around the first rotating axis, and the axial direction of the tube pressing rod is parallel to the first rotating axis; the second driving member can drive the clamping assembly to switch between a clamping state and a tube changing state.

[0007] In one embodiment of the present application, the clamping assembly includes a slide rail connected to the fixed seat, a slider slidably connected to the slide rail, and a transmission device for connecting the slider and the second driving member; the slider can slide along the slide rail in a direction close to or away from the first rotating axis, the transmission device includes an eccentric wheel, the second driving member adopts a second motor, the second motor has a second core shaft arranged parallel to the first rotating axis, and the eccentric wheel is connected to the second core shaft; an eccentric wheel hole for accommodating the eccentric wheel is provided on the side of the slider opposite to the second motor.

[0008] In one embodiment of the present application, the transmission device also includes a tensioning plate arranged in the eccentric wheel hole, a guide rod connected to the inner side wall of the eccentric wheel hole, and a tensioning spring arranged between the tensioning plate and the inner side wall of the eccentric wheel hole; the side of the eccentric wheel opposite to the first rotating axis abuts against the tensioning plate; the tensioning plate is provided with a guide hole, and the guide hole is arranged to avoid the position between the first rotating axis and the second core shaft, the axial direction of the guide rod is parallel to the axial direction of the tensioning spring, and the guide rod passes through the guide hole.

[0009] In one embodiment of the present application, the blood sampling device also includes a first buckle mechanism arranged along the blood sampling tube line, the first buckle mechanism includes a buckle base, and a first buckle member rotatably connected to the buckle base; the first buckle member has a first pipeline groove for placing the blood sampling tube line, the buckle base has a first blocking portion and a second blocking portion, the distance between the first blocking portion and the first buckle member is smaller than the distance between the second blocking portion and the first buckle member; the first blocking portion and the second blocking portion are both arranged opposite to one end of the first pipeline groove, and the first blocking portion is located on one side of the first pipeline groove, and the second blocking portion is located on the other side of the first pipeline groove, or the first blocking portion is arranged opposite to one end of the first pipeline groove, the second blocking portion is arranged opposite to the other end of the first pipeline groove, and the first blocking portion and the second blocking portion are located on the same side of the first pipeline groove.

[0010] In one embodiment of the present application, the blood collection device also includes a breaking mechanism arranged along the blood collection tube line, and the first buckle mechanism and the peristaltic pump are both arranged between the breaking mechanism and the blood storage bag; the breaking mechanism includes a breaking base, and a pulling piece rotatably connected to the breaking base; the breaking base has a second pipeline groove for placing the blood collection tube line, the pulling piece is arranged opposite to one end of the second pipeline groove, and the pulling piece can rotate around the breaking base.

[0011] In one embodiment of the present application, the blood collection device also includes a second snap mechanism arranged on one side of the breaking mechanism, the second snap mechanism includes a bypass blood bag holder, and a second snap component; the bypass blood bag holder has a snap connection portion, the snap connection portion is provided with a third pipeline through groove, the second snap component has a limiting rod, the limiting rod is arranged opposite to one end of the third pipeline through groove, and the limiting rod can move along the edge of the snap connection portion.

[0012] In one embodiment of the present application, the blood collection device also includes a sampling mechanism arranged below the second snap mechanism, the second snap mechanism also includes a tube clamping claw connected to the bypass blood bag bracket, and the tube clamping claw is arranged at a position between the sampling mechanism and the second snap member; the sampling mechanism includes a sampling base, a loading platform assembly, and a third driving member for driving the loading platform assembly to move in a direction close to or away from the tube clamping claw; the loading platform assembly includes a moving platform slidably connected to the sampling base, a fourth driving member connected to the moving platform, and a loading platform hinged to the moving platform, and a plurality of loading slots for loading test tubes are provided on the loading platform, and the fourth driving member can drive the loading platform to rotate so that one of the loading slots is aligned with the tube clamping claw.

[0013] In one embodiment of the present application, the blood collection device also includes a sharps collection mechanism arranged on one side of the breaking mechanism, and the sharps collection mechanism includes a sharps collection box and a hose container arranged between the sharps collection box and the breaking mechanism.

[0014] In one embodiment of the present application, the heat sealing mechanism includes a first heat sealing machine, a second heat sealing machine and a third heat sealing machine. The first heat sealing machine is arranged opposite to the sharps collection mechanism, the second heat sealing machine is arranged between the breaking mechanism and the first snap mechanism, and the third heat sealing machine is arranged between the first snap mechanism and the stored blood bag.

[0015] Implementing a blood sampling device provided by any embodiment of the present application has at least the following beneficial effects:

[0016] After the blood collection device provided in any embodiment of the present application completes blood collection, the peristaltic pump arranged along the blood collection tube line can pump the liquid in the storage blood bag to the blood collection tube line, and the first buckle mechanism, the breaking mechanism and the heat sealing mechanism can tear the blood collection tube line apart. In this way, before the heat sealing mechanism heat-seals the blood collection tube line to form a blood braid, the peristaltic pump is first used to pump part of the blood in the storage blood bag to the blood collection tube line. This part of the blood has been fully mixed with the anticoagulant pre-stored in the storage blood bag, which can prevent the blood in the blood braid from coagulating during the storage process, and ensure that the blood in the storage blood bag can be sampled and cross-matched from the blood braid before using it, so as to avoid destroying the sealing of the blood bag due to sampling from the blood bag, thereby preventing serious waste of medical resources when the blood cannot be matched with the wounded or patients.

[0017] The present application also provides a blood collection method for conveying blood along a blood collection tube line to a storage blood bag and conveying blood along a bypass line to a bypass blood bag, comprising the following steps:

[0018] Blood collection from a bypass blood bag: after the blood collection needle is inserted into the blood vessel, the first buckle mechanism is used to seal the blood collection tube line connected to the blood storage bag until a first preset volume of blood flows into the bypass blood bag along the bypass line;

[0019] Blood collection in a storage blood bag: using a second buckle mechanism to block the bypass line connected to the bypass blood bag, and opening the first buckle mechanism until a second preset volume of blood flows into the storage blood bag along the blood collection line;

[0020] Removing the needle: pulling out the blood collection needle and placing it in a sharps collection mechanism, using a first heat sealer to heat seal the blood collection tube line, using a breaking mechanism to break the blood collection tube line, and then opening the second buckle mechanism;

[0021] Heat-sealing the blood collection tube line: using a peristaltic pump to pump the third preset volume of blood in the blood storage bag to the blood collection tube line, using the second heat sealer and the third heat sealer to heat-seal the blood collection tube line, and using the breaking mechanism to tear the blood collection tube line apart.

[0022] In one embodiment of the present application, after the bypass blood bag blood collection step, a test tube sampling step is also included, and the test tube sampling step specifically includes: using a sampling mechanism to align the test tubes with the tube clamping claws in sequence, and inserting the sample retention needles into the test tubes in sequence, and then using the sampling mechanism to shake the blood in the test tubes.

[0023] In one embodiment of the present application, after the needle removal step and before the heat-sealing blood collection tube line step, a pretreatment step is also included, and the pretreatment step specifically includes: reversing the peristaltic pump to allow the third preset volume of fluid to flow out of the bypass blood bag.

[0024] Implementing the blood sampling method provided in any embodiment of the present application has at least the following beneficial technical effects:

[0025] In the blood collection method provided in any embodiment of the present application, the peristaltic pump arranged along the blood collection tube line can pump the liquid in the storage blood bag to the blood collection tube line before the second heat sealing machine and the third heat sealing machine heat seal the blood collection tube line. In this way, before the heat sealing mechanism heat seals the blood collection tube line to form a blood braid, the peristaltic pump is first used to pump part of the blood in the storage blood bag to the blood collection tube line. This part of the blood has been fully mixed with the anticoagulant pre-stored in the storage blood bag, which can prevent the blood in the blood braid from coagulating during the storage process, ensure that the blood in the storage blood bag can be sampled and cross-matched from the blood braid before using it, avoid sampling from the blood bag and causing the sealing of the blood bag to be destroyed, and thus prevent the serious waste of medical resources when the blood cannot be matched with the wounded or patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 is a schematic diagram of the structure of a blood bag used in a blood collection device provided in one embodiment of the present application;

[0028] Figure 2 is a schematic diagram of the structure of a blood sampling device provided by an embodiment of the present application;

[0029] Figure 3 is a schematic structural diagram of a peristaltic pump provided by an embodiment of the present application;

[0030] Figure 4 is an exploded schematic diagram of a peristaltic pump provided by an embodiment of the present application;

[0031] Figure 5 It is a schematic diagram of the assembly of a second driving member and a pressing assembly of a peristaltic pump provided by an embodiment of the present application;

[0032] Figure 6 is a schematic diagram of the assembly of a first driving member and a roller assembly of a peristaltic pump provided by an embodiment of the present application;

[0033] Figure 7 is a structural schematic diagram of a first buckle mechanism provided by an embodiment of the present application;

[0034] Figure 8 is a structural schematic diagram of a breaking mechanism provided by an embodiment of the present application;

[0035] Fig. 9 is a schematic structural diagram of a second buckle mechanism provided by an embodiment of the present application when a blood bag is loaded;

[0036] Fig.10 It is a schematic structural diagram of a sharps collection mechanism and a first heat sealer provided in one embodiment of the present application;

[0037] Fig.11 is a schematic diagram of the structure of a sampling mechanism provided by an embodiment of the present application;

[0038] Fig.12 is a flow chart of a blood sampling method provided by an embodiment of the present application;

[0039] Fig.13 It is a flow chart of a blood collection method provided in another embodiment of the present application.

[0040] The reference numerals in the above drawings are as follows:

[0041] 11-Blood collection needle; 12-Storage blood bag; 13-Blood collection tube line; 14-Bypass line; 16-Needle protection sleeve; 17-Bypass blood bag; 18-Three-way piece; 2-Breaking mechanism; 21-Breaking base; 211-Second pipeline slot; 22-Pulling piece; 23-Sixth driving piece; 3-Heat sealing mechanism; 31-First heat sealing machine; 32-Second heat sealing machine; 33-Third heat sealing machine; 34-Fourth heat sealing machine; 4-First buckle mechanism; 4 1- snap base; 411- first blocking part; 412- second blocking part; 42- first snap member; 421- first pipeline slot; 43- fifth driving member; 5- peristaltic pump; 51- fixed seat; 52- first driving member; 521- first spindle; 53- second driving member; 531- second spindle; 54- roller assembly; 541- rotating frame; 542- pipe pressing rod; 5421- rod core; 5422- rotating rod sleeve; 55- Clamping assembly; 551-slide rail; 5511-slide rail hole; 552-slider; 5521-positioning groove; 5522-eccentric wheel hole; 553-transmission device; 5531-eccentric wheel; 5532-tensioning plate; 5533-tensioning spring; 5534-guide rod; 554-pressure plate; 56-displacement sensor; 6-second buckle mechanism; 61-bypass blood bag bracket; 611-clamping part; 612-third pipeline slot; 62- The second fastener; 621-limiting rod; 63-tube clamping claw; 631-shrapnel seat; 632-first shrapnel; 633-second shrapnel; 7-sharps collection mechanism; 71-sharps collection box; 72-hose container; 73-start sensor; 8-sampling mechanism; 81-sampling base; 82-loading platform assembly; 821-moving platform; 823-loading platform; 8231-loading slot; 83-third driving member; 84-eighth driving member. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0044] In order to illustrate the technical solution described in this application, a detailed description is given below in conjunction with specific drawings and embodiments.

[0045] See also Figure 1 and Figure 2 An embodiment of the present application provides a blood collection device for transporting blood along a blood collection tube line 13 to a blood storage bag 12, comprising a peristaltic pump 5 and at least two heat-sealing mechanisms 3; the blood collection device provided in this embodiment may also include a breaking mechanism 2 and a first snap mechanism 4 arranged along the blood collection tube line 13, the breaking mechanism 2 and the heat-sealing mechanism 3 are both arranged along the blood collection tube line 13, the first snap mechanism 4 and the peristaltic pump 5 are both arranged along the blood collection tube line 13, and the first snap mechanism 4 and the peristaltic pump 5 are both arranged between the breaking mechanism 2 and the blood storage bag 12; the peristaltic pump 5 can pump the liquid in the blood storage bag 12 to the blood collection tube line 13.

[0046] The blood collection device provided in this embodiment is suitable for a blood bag consisting of a blood storage bag 12, a blood collection needle 11, and a blood collection line 13 connecting the blood storage bag 12 and the blood collection needle 11, wherein an anticoagulant is pre-stored in the blood storage bag 12 to prevent blood from coagulating during storage. In the blood collection device provided in this embodiment, the heat sealing mechanism 3 can heat seal the blood collection line 13 to form a blood braid for storing blood samples for testing and cross-matching; moreover, when the heat sealing mechanism 3 is opened, the breaking mechanism 2 can work together with the first buckle mechanism 4 to tear the blood collection line 13 without destroying the sealing of the blood bag; the peristaltic pump 5 can pump blood, air and other fluids in the blood collection line 13 from the outside of the blood collection line 13, and can realize quantitative and directional transmission of the fluid in the blood collection line 13.

[0047] The blood sampling device provided in this embodiment has at least the following beneficial technical effects:

[0048] After the blood sampling device provided in the present embodiment completes blood sampling, the peristaltic pump 5 arranged along the blood sampling tube line 13 can pump the liquid in the storage blood bag 12 to the blood sampling tube line 13, and the first buckle mechanism 4, the breaking mechanism 2 and the heat sealing mechanism 3 can tear the blood sampling tube line 13 apart. In this way, before the heat sealing mechanism 3 heats the blood sampling tube line 13 to form a blood braid, the peristaltic pump 5 is first used to pump part of the blood in the storage blood bag 12 to the blood sampling tube line 13. This part of the blood has been fully mixed with the anticoagulant pre-stored in the storage blood bag 12, which can prevent the blood in the blood braid from coagulating during the storage process, ensure that the blood in the storage blood bag 12 can be sampled and cross-matched from the blood braid before using it, avoid sampling from the blood bag and causing the sealing of the blood bag to be destroyed, thereby preventing the serious waste of medical resources when the blood cannot be matched with the wounded or patients.

[0049] Moreover, the blood collection device provided in this embodiment adopts a peristaltic pump 5 to pump blood. During the process of the peristaltic pump 5 pumping the fluid, the fluid only contacts the blood collection tube line 13 and does not contact the pump body of the peristaltic pump 5, thereby avoiding cross contamination between the pump body of the peristaltic pump 5 and the blood, and is not prone to blood leakage; the peristaltic pump 5 has good self-priming ability, no reflux phenomenon, and can be adapted to the transmission of various types of liquids (including shear-sensitive liquids), gases, solids, and multi-phase mixtures, and can pump the blood in the hose well; moreover, the peristaltic pump 5 does not contact the blood, and has the characteristics of long service life and easy maintenance.

[0050] See also Figures 3 to 6In one embodiment of the present application, the peristaltic pump 5 includes a fixed seat 51, a first driving member 52 connected to the fixed seat 51, a second driving member 53 connected to the fixed seat 51, a roller assembly 54, and a clamping assembly 55 connected to the second driving member 53; the roller assembly 54 includes a rotating frame 541 hinged to the first driving member 52, and a tube pressing rod 542 connected to the rotating frame 541, the rotating frame 541 can rotate around a first rotating axis, the tube pressing rod 542 is arranged around the first rotating axis, and the axial direction of the tube pressing rod 542 is parallel to the first rotating axis; the second driving member 53 can drive the clamping assembly 55 to switch between a clamping state and a tube changing state.

[0051] In the peristaltic pump 5 provided in this embodiment, the first driving member 52 and the second driving member 53 connected to the fixed seat 51 are respectively used to drive the rotation of the rotating frame 541 and the movement (and / or rotation) of the clamping assembly 55; when the second driving member 53 drives the clamping assembly 55 to switch to the clamping state, the clamping assembly 55 can press a section of hose (when there are multiple tube pressing rods 542, the length of the section of hose should be greater than the distance between two adjacent tube pressing rods 542) on the side of the tube pressing rod 542. At this time, as the first driving member 52 drives the rotating frame 541 to rotate, the tube pressing rod 542 can alternately squeeze the hose and rotate around the first rotation axis to form a negative pressure area with directionally moving in the hose, driving the fluid in the hose to flow; when the second driving member 53 drives the clamping assembly 55 to switch to the tube changing state, the clamping assembly 55 no longer clamps the hose together with the tube pressing rod 542, and the hose clamped by the peristaltic pump 5 can be easily taken out and replaced.

[0052] The peristaltic pump 5 provided in this embodiment is provided with a first driving member 52 and a second driving member 53, which can respectively drive the rotation of the rotating frame 541 and the movement of the clamping assembly 55, wherein the second driving member 53 drives the clamping assembly 55 to switch between the clamping state and the tube changing state. In this way, when it is necessary to replace the hose clamped by the peristaltic pump 5, the second driving member 53 can drive the clamping assembly 55 to switch to the tube changing state to facilitate the removal and installation of the hose; after the hose is installed in place, the second driving member 53 can drive the clamping assembly 55 to switch to the clamping state, at which time the fluid in the hose can flow in a directional and quantitative manner with the rotation of the roller assembly 54. The peristaltic pump 5 provided in this embodiment can make the replacement of the hose quick and convenient, and can significantly improve the working efficiency of the peristaltic pump 5 that needs to frequently replace the hose. The peristaltic pump 5 has better human-machine efficiency and is particularly suitable for sampling equipment such as automatic blood sampling equipment.

[0053] See also Figures 3 to 6In one embodiment of the present application, the clamping assembly 55 includes a slide rail 551 connected to the fixed seat 51, a slider 552 slidably connected to the slide rail 551, and a transmission 553 for connecting the slider 552 and the second driving member 53; the slider 552 can slide along the slide rail 551 in a direction close to or away from the first rotation axis, and the second driving member 53 can drive the slider 552 to slide through the transmission 553.

[0054] Specifically, the slider 552 plays the role of pressing the hose against the side of the tube pressing rod 542; the second driving member 53 can drive the slider 552 to move in a direction away from the first rotation axis through the transmission 553 until the pressing assembly 55 is in a tube changing state, and can also drive the slider 552 to move in a direction close to the first rotation axis through the transmission 553 until the pressing assembly 55 is in a pressing state. Using the slider 552 that moves linearly to press the hose is conducive to making the pressure on the hose more uniform; the slider 552 will completely detach from the roller assembly 54 when in a tube changing state, which is convenient for replacing the hose. Optionally, the slide rail 551 and the slider 552 are connected by an axial bearing to reduce the friction when the slider 552 slides along the slide rail 551.

[0055] See also Figures 3 to 6 As a specific solution of this embodiment, a positioning groove 5521 is provided on one side of the slider 552 opposite to the roller assembly 54, and the width of the positioning groove 5521 gradually increases in a direction away from the bottom surface of the positioning groove 5521. When the second driving member 53 drives the slider 552 to move toward the first rotation axis through the transmission 553, the positioning groove 5521 can position the hose, so that the hose can be pressed at a predetermined position.

[0056] See also Figures 3 to 6 As a specific solution of this embodiment, the fixed seat 51 has a slide rail hole 5511, and the two ends of the slide rail 551 are connected to the inner wall of the slide rail hole 5511. In this way, the slide rail 551 is arranged in the slide rail hole 5511, which can reduce the space volume occupied by the peristaltic pump 5 and prevent the slide rail 551 from contacting with debris. Optionally, the slide rail hole 5511 is a strip hole or a waist hole, and the slide rail 551 is arranged along the length direction of the slide rail hole 5511 to reduce the influence of the slide rail hole 5511 on the structural strength of the fixed seat 51.

[0057] See also Figures 3 to 6 In one embodiment of the present application, the transmission 553 includes an eccentric wheel 5531, the second driving member 53 adopts a second motor, the second motor has a second core shaft 531 arranged parallel to the first rotation axis, and the eccentric wheel 5531 is connected to the second core shaft 531; the side of the slider 552 opposite to the second motor is provided with an eccentric wheel 5531 hole 5522 for accommodating the eccentric wheel 5531.

[0058] In this embodiment, the second motor may be a stepper motor; the second mandrel 531 can drive the eccentric wheel 5531 to rotate around the second rotation axis, the eccentric wheel 5531 axis direction of the eccentric wheel 5531 is parallel to the second rotation axis, and the second mandrel 531 avoids the eccentric wheel 5531 axis setting of the eccentric wheel 5531. In this way, as the second mandrel 531 rotates, when the eccentric wheel 5531 rotates to the point where the eccentric wheel 5531 axis is located between the second rotation axis and the first rotation axis, the second motor drives the slider 552 to move to a position close to the first rotation axis through the eccentric wheel 5531, that is, the position of the slider 552 in the clamping state; when the eccentric wheel 5531 rotates to the point where the eccentric wheel 5531 axis is located on the side of the second rotation axis away from the first rotation axis, the second motor drives the slider 552 to move to a position away from the first rotation axis through the eccentric wheel 5531, that is, the position of the slider 552 in the tube changing state.

[0059] See also Figures 3 to 6 In one embodiment of the present application, the transmission device 553 also includes a tensioning plate 5532 arranged in the hole 5522 of the eccentric wheel 5531, and a tensioning spring 5533 arranged between the tensioning plate 5532 and the inner wall of the hole 5522 of the eccentric wheel 5531, and the side of the eccentric wheel 5531 opposite to the first rotating axis abuts the tensioning plate 5532.

[0060] In this embodiment, the tensioning spring 5533 is always in a compressed state or a free state (that is, the tensioning spring 5533 is in a state without any external force). When the eccentric wheel 5531 rotates until the axis of the eccentric wheel 5531 is between the second rotation axis and the first rotation axis, the slider 552 presses the hose against the side of the rolling assembly. At this time, the tensioning plate 5532 and the inner wall of the hole of the eccentric wheel 5531 are connected by a spring. In this way, when the rolling assembly and the slider 552 clamp the hose and the rolling assembly rotates, the rolling assembly and the slider 552 always tightly press the hose.

[0061] See also Figures 3 to 6 In one embodiment of the present application, a guide hole is provided in the tensioning plate 5532, and the guide hole is arranged to avoid the position between the first rotating shaft and the second core shaft 531. The clamping assembly 55 also includes a guide rod 5534 connected to the inner wall of the hole 5522 of the eccentric wheel 5531, and the axial direction of the guide rod 5534 is parallel to the axial direction of the tensioning spring 5533, and the guide rod 5534 passes through the guide hole.

[0062] In this embodiment, the guide rod 5534 extends in a direction perpendicular to the first rotation axis and pointing to the second rotation axis, and passes through the guide hole. The guide rod 5534 and the guide hole can guide the movement of the tensioning plate 5532, thereby preventing the tensioning plate 5532 from slipping and deviating to the sides of the eccentric wheel 5531 under the action of the eccentric wheel 5531.

[0063] As a preferred solution of this embodiment, a mounting hole is opened on the inner wall of the hole 5522 of the eccentric wheel 5531 opposite to the first rotating axis, and the guide rod 5534 passes through the mounting hole and is connected to the inner wall of the mounting hole. Such an arrangement helps to simplify the process flow of manufacturing the peristaltic pump 5.

[0064] See also Figures 3 to 6 In one embodiment of the present application, the tensioning spring 5533 is arranged around the guide rod 5534, and a spring groove is provided on the side of the tensioning plate 5532 opposite to the first rotation axis, and the end of the spring groove opposite to the tensioning plate 5532 abuts against the bottom surface of the spring groove, so that the tensioning spring 5533 can be more firmly wrapped around the side wall of the guide rod 5534.

[0065] In one embodiment of the present application, the first driving member 52 adopts a first motor, the first motor has a first spindle 521 arranged along a first rotating axis, and the rotating frame 541 is connected to the first spindle 521 .

[0066] In this embodiment, the first motor may be a stepper motor; the first mandrel 521 can drive the rotating frame 541 to rotate around the first rotating axis, and there are multiple tube pressing rods 542, each of which is connected to the rotating frame 541, and each of which is arranged in a direction parallel to the first rotating axis, and each of which is equidistant from the first rotating axis. Thus, when the clamping assembly 55 is in a clamping state, as the first mandrel 521 rotates, each of the tube pressing rods 542 sequentially squeezes the fluid in the hose in a preset direction, causing the fluid in the hose to flow in a predetermined direction at a preset speed.

[0067] See also Figures 3 to 6 In one embodiment of the present application, the tube pressing rod 542 includes a rod core 5421 connected to the rotating frame 541 and arranged parallel to the first rotating axis, and a rotating rod sleeve 5422 sleeved on the outer wall of the rod core 5421, and the rotating rod sleeve 5422 can be rotatably connected to the rod core 5421.

[0068] In this embodiment, the rotating rod sleeve 5422 is hingedly connected to the rod core 5421. In this way, when the clamping assembly 55 is in a clamping state, each tube pressing rod 542 squeezes the fluid in the hose in a preset direction in sequence as the first core shaft 521 rotates, and the rod core 5421 does not rotate relative to the rotating axis. The rotating rod sleeve 5422 rotates around the rod core 5421 under the action of the friction force of the hose, thereby reducing the friction between the hose and the tube pressing rod 542.

[0069] See also Figures 3 to 6 In one embodiment of the present application, the peristaltic pump 5 further includes a displacement sensor 56 connected to the fixing seat 51 , and the displacement sensor 56 is used to detect the state of the clamping assembly 55 .

[0070] The displacement sensor 56 is used to detect the state of the clamping assembly 55. The start or stop of the second driving member 53 and the first driving member 52 is controlled according to the detection result of the displacement sensor 56, which can improve the automation level of the peristaltic pump 5 and further improve the working efficiency of the peristaltic pump 5. Specifically, when the displacement sensor 56 detects that the clamping assembly 55 has reached the clamping state, the displacement sensor 56 can issue a stop command, and the second driving member 53 stops moving after receiving the sensing command, so as to prevent the slider 552 from moving away from the first rotation axis, and ensure that the slider 552 can compress the hose together with the roller assembly 54.

[0071] See also Figures 3 to 6 As a specific solution of this embodiment, the displacement sensor 56 can adopt a pressure sensor, which is arranged along the second rotation axis. The pressure sensor can sense the pressure in the direction from the second rotation axis to the first rotation axis; the clamping assembly 55 also includes a pressure plate 554 connected to the slider 552. When the clamping assembly 55 runs to the clamping state, the pressure plate 554 can apply a force to the pressure sensor in the direction from the second rotation axis to the first rotation axis.

[0072] See also Figure 2 and Figure 7 In one embodiment of the present application, the first buckle mechanism 4 includes a buckle base 41, and a first buckle member 42 rotatably connected to the buckle base 41; the first buckle member 42 has a first pipeline groove 421 for placing the blood collection line 13, the buckle base 41 has a first blocking portion 411 and a second blocking portion 412, and the distance between the first blocking portion 411 and the first buckle member 42 is smaller than the distance between the second blocking portion 412 and the first buckle member 42; the first blocking portion 411 and the second blocking portion 412 are both arranged opposite to one end of the first pipeline groove 421, and the first blocking portion 411 is located on one side of the first pipeline groove 421, and the second blocking portion 412 is located on the other side of the first pipeline groove 421, or the first blocking portion 411 is arranged opposite to one end of the first pipeline groove 421, the second blocking portion 412 is arranged opposite to the other end of the first pipeline groove 421, and the first blocking portion 411 and the second blocking portion 412 are located on the same side of the first pipeline groove 421.

[0073] In this embodiment, the first buckle mechanism 4 further includes a fifth driving member 43 for driving the first buckle member 42 to rotate relative to the buckle base 41, and the fifth driving member 43 may be a stepping motor; the distance between the second blocking portion 412 and the first buckle member 42 should be sufficient to accommodate the blood collection line 13, and the blood collection line 13 can be clamped between the second blocking portion 412 and the first buckle member 42; the distance between the first blocking portion 411 and the first buckle member 42 should be sufficient to be less than twice the thickness of the blood collection line 13, that is, it should be sufficient to prevent the flow of fluid in the blood collection line 13. The position setting method of the first blocking portion 411 and the second blocking portion 412 is not unique, but the principle is similar. The following takes the first blocking portion 411 being arranged above the first buckle member 42 and close to the left side of the first pipeline through groove 421, and the second blocking portion 412 being arranged below the first buckle member 42 and close to the left side of the first pipeline through groove 421 as an example to explain the working principle of the first buckle mechanism 4. When the heat-sealing mechanism 3 is started, the first buckle mechanism 4 can tear off the blood collection tube line 13. Specifically, the first buckle 42 rotates clockwise, and the upper end of the blood collection tube line 13 rotates in a direction away from the first blocking portion 411 as the first buckle 42 rotates, so that the blood collection tube line 13 can be clamped between the first buckle 42 and the second blocking portion 412 under the action of friction while pulling the blood collection tube line 13. The rotation of the first buckle 42 can provide a pulling force to the blood collection tube line 13, and the second blocking portion 412 has a limiting effect on the blood collection tube line 13, further increasing the pulling force; the blood collection tube line 13 is continuously subjected to tension during the rotation process until the blood collection tube line 13 is disconnected at the heat-sealed position, that is, the tearing operation of the blood collection tube line 13 is completed. When the first fastener 42 rotates counterclockwise, the upper end of the blood collection line 13 located in the first pipeline groove 421 is clamped between the first fastener 42 and the first blocking portion 411, and the lower end of the blood collection line 13 rotates along with the first fastener 42 in a direction away from the first blocking portion 411. At this time, the first fastener 42 and the first blocking portion 411 can achieve the closure of the blood collection line 13 and prevent the flow of fluid in the blood collection line 13.

[0074] See also Figure 2 and Figure 8 In one embodiment of the present application, the breaking mechanism 2 includes a breaking base 21, and a pulling piece 22 rotatably connected to the breaking base 21; the breaking base 21 has a second pipeline groove 211 for placing the blood collection tube line 13, the pulling piece 22 is arranged opposite to one end of the second pipeline groove 211, and the pulling piece 22 can rotate around the breaking base 21; there is a gap between the pulling piece 22 and the breaking base 21.

[0075] In this embodiment, the breaking mechanism 2 further includes a sixth driving member 23 for driving the pulling member 22 to rotate relative to the breaking base 21. The sixth driving member 23 may be a stepping motor. The gap between the pulling member 22 and the breaking base 21 should be sufficient to accommodate the blood collection line 13. Figure 1 For the existing universal blood bag that connects the bypass line 14 to the blood collection line 13 through the tee piece 18, a plunger is provided in the tee piece 18. Medical staff need to break the plunger to allow blood to flow into the storage blood bag 12 along the blood collection line 13. The pulling piece 22 can reciprocate around the breaking base 21 under the drive of the sixth driving piece 23 when the plunger needs to be broken, such as when the bypass blood bag 17 has completed blood collection and blood needs to be input into the storage blood bag 12, thereby realizing automatic breaking of the plunger.

[0076] See also Figure 2 and Fig. 9 In one embodiment of the present application, the blood collection device also includes a second snap mechanism 6 arranged on one side of the breaking mechanism 2, the second snap mechanism 6 includes a bypass blood bag holder 61, and a second snap component 62; the bypass blood bag holder 61 has a snap connection portion 611, the snap connection portion 611 is provided with a third pipeline through groove 612, the second snap component 62 has a limiting rod 621, the limiting rod 621 is arranged opposite to one end of the third pipeline through groove 612, and the limiting rod 621 can move along the edge of the snap connection portion 611.

[0077] In this embodiment, the second snap mechanism 6 also includes a seventh driving member (not shown in the figure) for driving the limiting rod 621 to move along the edge of the snap-fit ​​portion 611, and the seventh driving member can be a stepping motor; the blood collection device provided in this embodiment can be applicable to a blood bag provided with a bypass pipeline 14 and a bypass blood bag 17, the bypass pipeline 14 connects the blood collection line 13 between the breaking mechanism 2 and the first snap mechanism 4, and the heat sealing mechanism 3 can at least form heat sealing at two points between the connection point between the bypass pipeline 14 and the blood collection line 13 and the storage blood bag 12 to ensure that at least one blood braid can be formed; the gap between the limiting rod 621 and the snap-fit ​​portion 611 should be less than twice the thickness of the blood collection line 13, that is, it can prevent the flow of fluid in the blood collection line 13. When the limiting rod 621 moves to a position avoiding the direction in which the third pipeline slot 612 extends, the third pipeline slot 612 can play the role of clamping and fixing the bypass pipeline 14; when the limiting rod 621 moves in the direction in which the third pipeline slot 612 extends, it can work together with the clamping portion 611 to clamp the bypass pipeline 14 and prevent the fluid from flowing along the bypass pipeline 14, that is, to achieve the control of the on-off of the bypass pipeline 14. Optionally, the blood collection device further includes a weighing mechanism (not shown in the figure) for measuring the blood content in the bypass blood bag 17 by weighing the weight of the second buckle mechanism 6, or the blood collection device further includes a photoelectric switch for measuring the blood content in the bypass blood bag 17 by measuring the blood height in the bypass blood bag 17.

[0078] See also Figure 2 , Fig. 9 and Fig.11 In one embodiment of the present application, the blood sampling device further includes a sampling mechanism 8 disposed below the second snap mechanism 6, the second snap mechanism 6 further includes a tube clamping claw 63 connected to the bypass blood bag bracket 61, and the tube clamping claw 63 is disposed between the sampling mechanism 8 and the second snap member 62; the sampling mechanism 8 includes a sampling base 81, a loading platform assembly 82, and a third driving member 83 for driving the loading platform assembly 82 to move in a direction close to or away from the tube clamping claw 63; the loading platform assembly 82 includes a moving platform 821 slidably connected to the sampling base 81, a fourth driving member connected to the moving platform 821 (arranged in a housing below the loading platform 823, not shown in the figure), and a loading platform 823 articulated to the moving platform 821, a plurality of loading slots 8231 for loading test tubes are provided on the loading platform 823, and the fourth driving member can drive the rotation of the loading platform 823 so that one of the loading slots 8231 is aligned with the tube clamping claw 63.

[0079] The blood sampling device provided in this embodiment is suitable for a bypass blood bag 17 connected to a bypass pipeline 14 for blood intake and a bypass pipeline 14 for sample retention. The two bypass pipelines 14 can be respectively connected to the two ends of the bypass blood bag 17, wherein the end of the bypass pipeline 14 not connected to the blood collection blood line 13 away from the bypass blood bag 17 is connected to a sample retention needle (arranged in a needle protection sleeve 16, not shown in the figure), and a needle protection sleeve 16 surrounding the sample retention needle is provided, and the bypass blood bag 17 is arranged between the clamping claw 63 and the clamping portion 611; the third driving member 83 can adopt a cylinder or a stepping motor, and the fourth driving member can adopt a stepping motor, wherein the third driving member 83 is used to drive the loading platform assembly 82 to move in a direction close to or away from the clamping claw 63, and the fourth driving member is used to drive the loading platform 823 to rotate around the vertical direction. The third driving member 83 and the fourth driving member can control the movement and rotation of the loading platform 823 in a timed manner, so that the test tubes for collecting blood samples from the bypass blood bag 17 loaded in the multiple loading slots 8231 can be aligned with the needle protection sleeve 16 clamped by the tube clamping claw 63 in sequence, and the sample needles can be inserted into the test tubes in sequence; then, the fourth driving member can further control the rotation of the loading platform 823 to shake the blood samples in the test tubes to avoid blood sample coagulation.

[0080] See also Figure 2 , Fig. 9 and Fig.11 As a specific solution of this embodiment, the clamping tube claw 63 includes a spring plate seat 631 connected to the support part, a first spring plate 632 connected to the side of the spring plate seat 631 away from the support part, and a second spring plate 633 connected to the side of the spring plate seat 631 away from the support part; the first spring plate 632 and the second spring plate 633 are arranged opposite to each other; one end of the first spring plate 632 away from the spring plate seat 631 is folded in a direction away from the second spring plate 633, and one end of the second spring plate 633 away from the spring plate seat 631 is folded in a direction away from the first spring plate 632. The part of the first spring plate 632 folded in a direction away from the second spring plate 633 and the part of the second spring plate 633 folded in a direction away from the first spring plate 632 can constitute a guiding structure, and such a setting can enable medical staff to conveniently clamp the needle guard sleeve 16 on the clamping tube claw 63.

[0081] As a specific solution of this embodiment, the sampling mechanism 8 also includes an eighth driving member 84 connected to the moving table 821, moving up and down with the moving table 821 and used to control the rotation of the moving table 821 around the horizontal direction. The moving table 821 is connected to the third driving member 83 through the eighth driving member 84. The eighth driving member 84 can adopt a stepping motor. The eighth driving member 84 can drive the loading table 823 to rotate around the horizontal direction through the moving table 821. The eighth driving member 84 works together with the fourth driving member to better shake the blood sample in the test tube, avoid blood sample coagulation, and prevent blood sample stratification.

[0082] See also Figure 2 and Fig.10 In one embodiment of the present application, the blood collection device also includes a sharps collection mechanism 7 arranged on one side of the breaking mechanism 2, the sharps collection mechanism 7 includes a sharps collection box 71, and a hose container 72 arranged between the sharps collection box 71 and the breaking mechanism 2; the heat sealing mechanism 3 includes a first heat sealing machine 31, a second heat sealing machine 32 and a third heat sealing machine 33, the first heat sealing machine 31 is arranged opposite to the sharps collection mechanism 7, the second heat sealing machine 32 is arranged between the breaking mechanism 2 and the first buckle mechanism 4, and the third heat sealing machine 33 is arranged between the first buckle mechanism 4 and the blood storage bag 12.

[0083] The first heat sealer 31, the second heat sealer 32 and the third heat sealer 33 can all play the role of heat sealing the blood collection tube line 13. Moreover, during the heat sealing process, the blood collection tube line 13 is easily torn off. During this period, the breaking mechanism 2 and the first buckle mechanism 4 can be used to tear off the blood collection tube line 13, ensuring that the blood in the blood bag 12 and the blood collection tube line 13 is not contaminated, and can also prevent the blood in the blood collection tube line 13 from flowing out; the second heat sealer 32 and the third heat sealer 33 can form a blood braid, which can be connected to the blood bag 12 and the blood collection tube line 13. 12 is stored together. When the blood from the storage blood bag 12 is used, the blood sample in the blood braid can be used for detection and cross-matching; after the blood collection needle 11 is placed in the sharps collector and the blood collection tube line 13 is placed in the hose container 72, the first heat sealer 31 and the breaking mechanism 2 are started, so that the end of the blood collection tube line 13 connected with the blood collection needle 11 can be heat-sealed and torn off, and a section of the blood collection tube line 13 with the blood collection needle 11 can fall into the sharps collection box 71, so that the blood collection needle 11 is recovered, which improves safety and convenience.

[0084] See also Figure 2 As a specific solution of this embodiment, the heat sealing mechanism 3 can also include a fourth heat sealing machine 34 arranged between the third heat sealing machine 33 and the stored blood bag 12, so that the blood collection device can form two sections of blood braids.

[0085] See also Fig.10As a specific solution of this embodiment, the sharps collection mechanism 7 further includes a start sensor 73, which can be a pressure rod sensor. The start sensor 73 is used to send a sensor signal when the blood collection tube line 13 is clamped to the hose container 72. The first heat sealer 31 and the breaking mechanism 2 are started after receiving the third sensor signal to heat seal and tear off the end of the blood collection tube line 13 connected to the blood collection needle 11, and make a section of the blood collection tube line 13 with the blood collection needle 11 fall into the sharps collection box 71. Preferably, the clamping groove of the hose container 72 can accommodate the blood collection tube line 13 without clamping the blood collection tube line 13 therein, and the blood collection needle 11 cannot pass through, thereby ensuring that the part of the blood collection tube line 13 with the blood collection needle 11 falls smoothly into the sharps collection box 71.

[0086] The present application also provides a blood collection method for transporting blood along a blood collection tube line 13 to a storage blood bag 12 and transporting blood along a bypass line 14 to a bypass blood bag 17. In order to better illustrate the blood collection method provided by this embodiment and provide a preferred embodiment for the above-mentioned blood collection device, the structure of the blood collection device and the blood bag adapted to the blood collection device are first described. It should be understood that the structural description of the blood collection device and the blood bag here is for the convenience of explaining the blood collection method provided by this embodiment, and should not be understood as a limitation on the blood collection method provided by this embodiment. The blood collection method provided by this embodiment can also be adapted to the following blood collection device that lacks some structures.

[0087] The blood bag comprises a blood collection needle 11, a blood storage bag 12, a blood collection tube line 13 connecting the blood collection needle 11 and the blood storage bag 12, a bypass line 14 connecting the blood collection tube line 13 from the side of the blood collection tube line 13, a sample retaining needle arranged at one end of the bypass line 14 away from the blood collection tube line 13, a needle protection sleeve 16 sleeved on the outside of the sample retaining needle, and a bypass blood bag 17 arranged on the path of the bypass line 14; the blood collection equipment comprises a breaking mechanism 2 arranged along the blood collection tube line 13 and successively away from the blood collection needle 11, a second heat sealing machine 32, a first buckle mechanism 4, a third heat sealing machine 33, a peristaltic pump 5, a fourth heat sealing machine 34, and a third heat sealing machine 35 arranged along the bypass line 14. And it is used to carry the second snap mechanism 6 of the bypass blood bag 17, the sampling mechanism 8 arranged on the side of the bypass blood bag 17 away from the blood collection line 13, the sharps collection mechanism 7 arranged on the side of the breaking mechanism 2, and the first heat sealing machine 31 arranged opposite to the sharps collection mechanism 7; the bypass pipeline 14 is connected to the blood collection line 13 on the side of the breaking mechanism 2 away from the second heat sealing machine 32; the breaking mechanism 2, the heat sealing mechanism 3, the first snap mechanism 4, the peristaltic pump 5, the second snap mechanism 6, the sharps collection mechanism 7 and the sampling mechanism 8 can be arranged on an integral supporting structure, and the integral supporting structure can be a blood collection workbench for supporting various blood collection equipment.

[0088] See also Fig.12The blood collection method specifically includes the following steps:

[0089] Blood collection through a bypass blood bag S1: After the blood collection needle 11 is inserted into a blood vessel, a first buckle mechanism 4 is used to block a blood collection tube line 13 connected to a blood storage bag 12 until a first preset volume of blood flows into a bypass blood bag 17 along a bypass line 14;

[0090] Blood collection in a storage blood bag S2: The bypass line 14 for connecting the bypass blood bag 17 is blocked by the second buckle mechanism 6, and the first buckle mechanism 4 is opened until the second preset volume of blood flows into the storage blood bag 12 along the blood collection line 13;

[0091] Removing the needle S3: Pull out the blood collection needle 11 and place it in the sharps collection mechanism 7, heat-seal the blood collection tube line 13 with the first heat-sealing machine 31, and break the blood collection tube line 13 with the breaking mechanism 2, and then open the second buckle mechanism 6;

[0092] Heat-sealing blood collection tube line S4: Use the peristaltic pump 5 to pump the third preset volume of blood in the blood bag 12 to the blood collection tube line 13, use the second heat sealer 32 and the third heat sealer 33 to heat-seal the blood collection tube line 13, and use the breaking mechanism 2 to tear the blood collection tube line 13 apart.

[0093] The blood sampling method provided in this embodiment has at least the following beneficial technical effects:

[0094] In the blood collection method provided in the present embodiment, the peristaltic pump 5 arranged along the blood collection tube line 13 can pump the liquid in the storage blood bag 12 to the blood collection tube line 13 before the second heat sealer 32 and the third heat sealer 33 heat seal the blood collection tube line 13. In this way, before the heat sealing mechanism 3 heat seals the blood collection tube line 13 to form a blood braid, the peristaltic pump 5 is first used to pump part of the blood in the storage blood bag 12 to the blood collection tube line 13. This part of the blood has been fully mixed with the anticoagulant pre-stored in the storage blood bag 12, which can prevent the blood in the blood braid from coagulating during the storage process, ensure that the blood in the storage blood bag 12 can be sampled and cross-matched from the blood braid before using it, avoid sampling from the blood bag causing the sealing of the blood bag to be destroyed, and thus prevent the serious waste of medical resources when the blood cannot be matched with the wounded or patients.

[0095] As a specific solution of this embodiment, in step S4 of heat-sealing the blood collection tube line, for the blood collection equipment provided with a fourth heat-sealing machine 34, the fourth heat-sealing machine 34 should be turned on simultaneously with the second heat-sealing machine 32 and the third heat-sealing machine 33 to form two sections of blood braids.

[0096] As a preferred solution of this embodiment, the value of the first preset volume is determined by the number of test tubes required for sampling and testing, the blood sample volume in each test tube should be no less than 3 ml, and the range of the first preset volume can be 18-24 ml; the value of the second preset volume is determined by the blood collection volume and the working mode of the blood collection device, and the second preset volume range can be 200-220 ml, or can be 400-420 ml; the value range of the third preset volume is determined by the number of blood braids, the blood sample volume in each blood braid should be no less than 3 ml, and the value range of the third preset volume can be 3-12 ml.

[0097] See also Fig.13 In one embodiment of the present application, after the bypass blood bag blood collection step S1, it also includes a test tube sample retention step S5, and the test tube sample retention step S5 specifically includes: using the sampling mechanism 8 to align the test tubes with the tube clamping claws 63 in sequence, and inserting the sample retention needles into the test tubes in sequence, and then using the sampling mechanism 8 to shake the blood in the test tubes.

[0098] As a preferred solution of this embodiment, during the test tube sample retaining step S5, the second snap mechanism 6 is closed to prevent excessive blood from flowing into the bypass blood bag 17 and causing waste; the test tube sample retaining step S5 can be performed after the bypass blood bag blood collection step S1, as long as there is enough blood in the bypass blood bag 17 for sample retention. Preferably, the test tube sample retaining step S5 can be performed simultaneously with the storage blood bag blood collection step S2.

[0099] See also Fig.13 In one embodiment of the present application, after the needle removal step S3 and before the heat-sealing blood collection tube line step S4, a pretreatment step S6 is also included. The pretreatment step S6 specifically includes: reversing the peristaltic pump 5 so that the third preset volume of fluid flows out of the bypass blood bag 17.

[0100] By setting the pretreatment step S6, waste of blood samples can be avoided and the bypass blood bag 17 can be prevented from containing too much blood sample when being abandoned; moreover, by setting the pretreatment step S6, the value range of the second preset volume can be reduced. Specifically, the value range of the second preset volume can be 200-210 ml, or can be 400-410 ml. The specific value range can be determined according to the blood collection volume.

[0101] The blood collection equipment and blood collection method provided in each embodiment of the present application can be applied to human blood collection, and its application scenarios include but are not limited to blood donation, preoperative autologous blood collection and blood collection for detection, etc.; it can also be used for blood collection from animals and other living organisms, and its application scenarios include but are not limited to medicinal blood collection from animals and other living organisms, experimental blood collection and blood collection for detection, etc.

[0102] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A blood sampling device for transferring blood along a blood sampling tube line to a blood storage bag, characterized in that: The blood collection tube comprises a peristaltic pump, a breaking mechanism, a first buckle mechanism, a second buckle mechanism, a sampling mechanism, a sharps collection mechanism and at least two heat-sealing mechanisms; the breaking mechanism and the heat-sealing mechanism are both arranged along the blood collection tube line, the first buckle mechanism and the peristaltic pump are both arranged along the blood collection tube line, and the first buckle mechanism and the peristaltic pump are both arranged between the breaking mechanism and the blood storage bag, the second buckle mechanism is arranged on one side of the breaking mechanism, the sampling mechanism is arranged below the second buckle mechanism, and the sharps collection mechanism is arranged on one side of the breaking mechanism; the peristaltic pump can pump the liquid in the blood storage bag to the blood collection tube line; The heat sealing mechanism comprises a first heat sealing machine, a second heat sealing machine, a third heat sealing machine and a fourth heat sealing machine, wherein the first heat sealing machine is arranged opposite to the sharps collecting mechanism, the second heat sealing machine is arranged between the breaking mechanism and the first buckle mechanism, the third heat sealing machine is arranged between the first buckle mechanism and the stored blood bag, and the fourth heat sealing machine is arranged between the third heat sealing machine and the stored blood bag; The peristaltic pump comprises a fixed seat, a first driving member connected to the fixed seat, a second driving member connected to the fixed seat, a roller assembly, and a clamping assembly connected to the second driving member; the roller assembly comprises a rotating frame hinged to the first driving member, and a tube pressing rod connected to the rotating frame, the rotating frame can rotate around a first rotating axis, the tube pressing rod is arranged around the first rotating axis, and the axial direction of the tube pressing rod is parallel to the first rotating axis; the second driving member can drive the clamping assembly to switch between a clamping state and a tube changing state; The clamping assembly includes a slide rail connected to the fixing seat, a slider slidably connected to the slide rail, and a transmission device for connecting the slider and the second driving member; The slider can slide along the slide rail toward or away from the first rotating axis, the transmission includes an eccentric wheel, the second driving member adopts a second motor, the second motor has a second core shaft arranged parallel to the first rotating axis, and the eccentric wheel is connected to the second core shaft; an eccentric wheel hole for accommodating the eccentric wheel is provided on the side of the slider opposite to the second motor.

2. The blood sampling device according to claim 1, characterized in that: The transmission device also includes a tensioning plate arranged in the eccentric wheel hole, a guide rod connected to the inner side wall of the eccentric wheel hole, and a tensioning spring arranged between the tensioning plate and the inner side wall of the eccentric wheel hole; the side of the eccentric wheel opposite to the first rotating axis abuts against the tensioning plate; the tensioning plate is provided with a guide hole, and the guide hole is arranged to avoid the position between the first rotating axis and the second core shaft, the axial direction of the guide rod is parallel to the axial direction of the tensioning spring, and the guide rod passes through the guide hole.

3. The blood sampling device according to claim 1 or 2, characterized in that: The first buckle mechanism includes a buckle base, and a first buckle part rotatably connected to the buckle base; the first buckle part has a first pipeline groove for placing the blood collection tube line, and the buckle base has a first blocking portion and a second blocking portion, and the distance between the first blocking portion and the first buckle is smaller than the distance between the second blocking portion and the first buckle; the first blocking portion and the second blocking portion are both arranged opposite to one end of the first pipeline groove, and the first blocking portion is located on one side of the first pipeline groove, and the second blocking portion is located on the other side of the first pipeline groove, or the first blocking portion is arranged opposite to one end of the first pipeline groove, and the second blocking portion is arranged opposite to the other end of the first pipeline groove, and the first blocking portion and the second blocking portion are located on the same side of the first pipeline groove.

4. The blood sampling device according to claim 3, characterized in that: The breaking mechanism includes a breaking base and a pulling piece rotatably connected to the breaking base; the breaking base has a second pipeline groove for placing the blood collection tube line, the pulling piece is arranged opposite to one end of the second pipeline groove, and the pulling piece can rotate around the breaking base.

5. The blood sampling device according to claim 4, characterized in that: The second snap mechanism includes a bypass blood bag bracket and a second snap component; the bypass blood bag bracket has a snap connection portion, the snap connection portion is provided with a third pipeline through groove, the second snap component has a limiting rod, the limiting rod is arranged opposite to one end of the third pipeline through groove, and the limiting rod can move along the edge of the snap connection portion.

6. The blood sampling device according to claim 5, characterized in that: The second snap mechanism also includes a tube clamping claw connected to the bypass blood bag bracket, and the tube clamping claw is arranged at a position between the sampling mechanism and the second snap member; the sampling mechanism includes a sampling base, a loading platform assembly, and a third driving member for driving the loading platform assembly to move in a direction close to or away from the tube clamping claw; the loading platform assembly includes a moving platform slidably connected to the sampling base, a fourth driving member connected to the moving platform, and a loading platform hinged to the moving platform, and the loading platform is provided with a plurality of loading slots for loading test tubes, and the fourth driving member can drive the rotation of the loading platform so that one of the loading slots is aligned with the tube clamping claw.

7. The blood collection device according to claim 4, characterized in that: The sharps collection mechanism comprises a sharps collection box and a hose receiver arranged between the sharps collection box and the breaking mechanism.

Images