CN112915276A

CN112915276A - Blood sampling device and blood sampling method

Info

Publication number: CN112915276A
Application number: CN202110178898.1A
Authority: CN
Inventors: 陈方健; 蒋德强; 张才军; 夏细衡; 黄科明; 候孟云; 卢树芳; 谢景春
Original assignee: Shenzhen Sinoatma Intelligent System Co ltd
Current assignee: Shenzhen Sinoatma Intelligent System Co ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-06-08

Abstract

The application is applicable to the technical field of blood sampling equipment, and provides blood sampling equipment and a blood sampling method, wherein the blood sampling equipment comprises a breaking mechanism, a first buckle mechanism, a peristaltic pump and at least two heat seal mechanisms; the breaking mechanism and the heat sealing mechanism are arranged along the blood sampling pipeline, the first buckle mechanism and the peristaltic pump are arranged along the blood sampling pipeline, and the first buckle mechanism and the peristaltic pump are arranged between the breaking mechanism and the blood storage bag; the peristaltic pump can pump the liquid within the storage bag to the blood collection line. After the blood sampling is accomplished, the peristaltic pump that sets up along the blood sampling pipeline can move the liquid pump in the storage blood bag to the blood sampling pipeline, first buckle mechanism, breaking mechanism and heat seal mechanism can tear the blood sampling pipeline apart, before heat seal mechanism heat seal blood sampling pipeline formed the blood braid, adopt the peristaltic pump to pump the partial blood in the storage blood bag to the blood sampling pipeline, this partial blood has been with the anticoagulant intensive mixing who stores in advance in the storage blood bag, avoid the blood among the blood braid to solidify in the storage process.

Description

Blood sampling device and blood sampling method

Technical Field

The application relates to the technical field of blood sampling equipment, in particular to blood sampling equipment and a blood sampling method.

Background

Extracorporeal blood transfusion has irreplaceable effect on treating traumatic hemorrhage, postpartum hemorrhage, serious burn, various blood diseases, and the wounded and sick performing surgical operation. Blood cannot be manufactured manually, and can be obtained only by blood donation of healthy and aged people, so that the blood donation becomes an important means for obtaining medical resources in modern medicine. For medical hygiene and safety reasons, all blood bags need to be kept for testing, so blood bags with side bags are often used for receiving donations, the blood in the side bags is mainly used for testing, and the blood in the main bag is stored until used for transfusion.

In the traditional scheme, in order to improve the utilization efficiency of medical resources, after blood is collected by using a blood bag, pipelines for connecting human body members and the blood bag are thermally sealed to form a blood braid divided into a plurality of sections. The blood braid can be preserved together with the blood bag, and the blood in the blood braid can be used for various detections and cross matching before the blood in the blood bag is used for blood transfusion. However, since the blood in the blood braid cannot be fully mixed with the anticoagulant, the blood in the blood braid is easy to coagulate during storage, and only the blood in the blood bag can be used for detection, cross matching and the like; after the blood bag is sampled, the sealing performance of the blood bag is damaged, and if the blood cannot be matched with the wounded and the sick, the medical resources are seriously wasted.

Disclosure of Invention

The utility model provides a blood sampling equipment aims at solving the technical problem that after traditional blood sampling equipment collected blood, blood in the blood pigtail coagulated easily.

The blood sampling device is used for conveying blood to a blood storage bag along a blood sampling pipeline and is characterized by comprising a peristaltic pump and at least two heat sealing mechanisms; the heat seal mechanism is arranged along the blood collection vessel line, and the peristaltic pump is arranged along the blood collection vessel line; the peristaltic pump is capable of pumping liquid within the storage bag to the blood collection line.

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 compressing assembly connected to the second driving member; the roller assembly comprises a rotating frame hinged with the first driving piece and a pipe pressing rod connected with the rotating frame, the rotating frame can rotate around a first rotating shaft, the pipe pressing rod is arranged around the first rotating shaft, and the axial direction of the pipe pressing rod is parallel to the first rotating shaft; the second driving piece can drive the compaction assembly to switch between a compaction state and a tube replacement state.

In one embodiment of the application, the pressing assembly comprises a slide rail connected with the fixed seat, a slide block movably connected with the slide rail, and a driver used for connecting the slide block and the second driving piece; the sliding block can slide along the sliding rail in a direction close to or far away from the first rotating shaft, the driver comprises an eccentric wheel, the second driving piece adopts a second motor, the second motor is provided with a second mandrel arranged in parallel with the first rotating shaft, and the eccentric wheel is connected with the second mandrel; and one side of the sliding block, which is opposite to the second motor, is provided with an eccentric wheel hole for accommodating the eccentric wheel.

In one embodiment of the present application, the driver further comprises a tension plate disposed within the eccentric hole, a guide bar connected to an inner sidewall of the eccentric hole, and a tension spring disposed between the tension plate and the inner sidewall of the eccentric hole; one side of the eccentric wheel opposite to the first rotating shaft is abutted against the tensioning plate; the tensioning plate is provided with a guide hole, the guide hole is arranged at a position between the first rotating shaft and the second mandrel in a avoiding mode, the axial direction of the guide rod is parallel to the axial direction of the tensioning spring, and the guide rod penetrates through the guide hole.

In one embodiment of the present application, the blood collection device further comprises a first buckle mechanism disposed along the blood collection line, the first buckle mechanism comprising a buckle base and a first buckle member rotatably connected to the buckle base; the first buckling piece is provided with a first pipeline through groove for placing the blood sampling pipeline, the buckling base is provided with a first blocking part and a second blocking part, and the distance between the first blocking part and the first buckling piece is smaller than the distance between the second blocking part and the first buckling piece; first block portion with the second block portion all with wherein one end that first pipeline led to the groove sets up relatively, just first block portion is located one side that first pipeline led to the groove, the second block portion is located the opposite side that first pipeline led to the groove, perhaps, first block portion with wherein one end that first pipeline led to the groove sets up relatively, the second block portion with the other end that first pipeline led to the groove sets up relatively, first block portion with the second block portion is located the homonymy that first pipeline led to the groove.

In one embodiment of the present application, the blood collection device further comprises a breaking mechanism disposed along the blood collection line, and the first snap mechanism and the peristaltic pump are both disposed between the breaking mechanism and the blood storage bag; the breaking mechanism comprises a breaking base and a pulling piece which is rotatably connected with the breaking base; the base of breaking has and is used for placing the second pipeline that adopts the blood vessel line leads to the groove, pull the piece with the one end that the second pipeline led to the groove sets up relatively, and pull the piece and can wind the base of breaking rotates.

In one embodiment of the present application, the lancing device further comprises a second latching mechanism disposed on one side of the breaking mechanism, the second latching mechanism comprising a bypass blood bag holder, and a second latch; the bypass blood bag support is provided with a clamping portion, the clamping portion is provided with a third pipeline through groove, the second buckling piece is provided with a limiting rod, the limiting rod is opposite to one end of the third pipeline through groove, and the limiting rod can move along the edge of the clamping portion.

In one embodiment of the present application, the blood sampling device further comprises a sampling mechanism disposed below the second fastening mechanism, the second fastening mechanism further comprises a tube clamping claw connected to the bypass blood bag holder, and the tube clamping claw is disposed at a position between the sampling mechanism and the second fastening member; the sampling mechanism comprises a sampling base, a loading platform assembly and a third driving piece for driving the loading platform assembly to move in a direction close to or far away from the pipe clamping jaw; the loading platform assembly comprises a moving platform, a fourth driving part and a loading platform, the moving platform is connected with the sampling base in a sliding mode, the fourth driving part is connected with the moving platform, the loading platform is hinged to the moving platform, a plurality of loading grooves used for loading test tubes are formed in the loading platform, and the fourth driving part can drive the loading platform to rotate so that one of the loading grooves is aligned with the tube clamping claw.

In one embodiment of the present application, the lancing device further comprises a sharps collecting mechanism disposed on one side of the breaking mechanism, the sharps collecting mechanism comprising a sharps collecting box, and a hose container disposed between the sharps collecting box and the breaking mechanism.

In an embodiment of this application, the heat-sealing mechanism includes first heat-sealing machine, second heat-sealing machine and third heat-sealing machine, first heat-sealing machine with the mechanism relative setting is collected to the sharp ware, the second heat-sealing machine set up in break mechanism with between the first buckle mechanism, the third heat-sealing machine set up in first buckle mechanism with between the storage blood bag.

The blood sampling device provided by any embodiment of the application at least has the following beneficial effects:

the blood sampling equipment that this application any embodiment provided is after accomplishing the blood sampling, the peristaltic pump that sets up along the blood sampling pipeline can move the liquid pump in storing the blood bag to the blood sampling pipeline, first buckle mechanism, rupture mechanism and heat seal mechanism can tear the blood sampling pipeline apart, thus, before heat seal mechanism heat seal blood sampling pipeline forms the blood braid, adopt the peristaltic pump to move the partial blood pump in storing the blood bag to the blood sampling pipeline earlier, this part blood has been with the anticoagulant intensive mixing who stores in advance in the storage blood bag, can avoid the blood in the blood braid to solidify in the storage process, can follow the blood braid before guaranteeing to use the blood in storing the blood bag and take a sample, cross the blood matching, avoid taking a sample from the blood bag and cause the leakproofness of blood bag to be destroyed, and then prevented the serious waste to medical resource under the condition that blood can't match with wounded, the disease.

The present application also provides a blood collection method for transporting blood along a blood collection line to a storage blood bag and along a bypass line to a bypass blood bag, comprising the steps of:

blood sampling by a bypass blood bag: after the blood sampling needle is penetrated into a blood vessel, a first buckle mechanism is adopted to block the blood sampling line which is used for connecting the blood storage bag until blood with a first preset volume flows into the bypass blood bag along the bypass pipeline;

blood collection by a blood storage bag: adopting a second buckle mechanism to block the bypass pipeline for connecting the bypass blood bag, and opening the first buckle mechanism until the blood with a second preset volume flows into the storage blood bag along the blood sampling pipeline;

removing the needle head: pulling out the blood sampling needle head, placing the blood sampling needle head in a sharp instrument collecting mechanism, thermally sealing the blood sampling line by adopting a first heat sealing machine, and opening the second buckle mechanism after the blood sampling line is broken by adopting a breaking mechanism;

heat-induced blood collection line: and pumping a third preset volume of blood in the blood storage bag to the blood collection line by adopting a peristaltic pump, thermally sealing the blood collection line by adopting a second heat sealing machine and a third heat sealing machine, and tearing off the blood collection line by adopting the breaking mechanism.

In an embodiment of the present application, after the step of collecting blood from the bypass blood bag, the method further includes a step of reserving a sample in a test tube, where the step of reserving a sample in a test tube specifically includes: adopt sampling mechanism to aim at the test tube in proper order the cardboard pipe claw to will leave the appearance syringe needle and insert in proper order the test tube, then adopt sampling mechanism to shake evenly the blood of test tube.

In an embodiment of the present application, after the step of removing the needle, before the step of thermally sealing the blood collection tube, the method further comprises a pretreatment step, wherein the pretreatment step specifically comprises: reversing the peristaltic pump to cause the third preset volume of fluid to flow out of the bypass blood bag.

The blood sampling method provided by any embodiment of the application at least has the following beneficial technical effects:

in the blood collection method provided by any embodiment of the application, the peristaltic pump arranged along the blood collection pipeline can pump the liquid in the storage blood bag to the blood collection pipeline before the second heat sealing machine and the third heat sealing machine heat seal the blood collection pipeline, so that before the heat sealing mechanism heat seal the blood collection pipeline to form a blood braid, the peristaltic pump is firstly adopted to pump part of the blood in the storage blood bag to the blood collection pipeline, the part of the blood is fully mixed with the anticoagulant stored in the storage blood bag in advance, the blood in the blood braid can be prevented from being coagulated in the storage process, the blood can be sampled from the blood braid and cross-matched before being used, the sealing performance of the blood bag is prevented from being damaged due to the sampling from the blood bag, and further the serious waste of medical resources under the condition that the blood cannot be matched with a wounded and a patient is prevented.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a blood bag for use with a blood collection device according to one embodiment of the present application;

FIG. 2 is a schematic structural view of a lancing device provided in one embodiment of the present application;

FIG. 3 is a schematic diagram of a peristaltic pump provided in one embodiment of the present application;

FIG. 4 is an exploded schematic view of a peristaltic pump provided by one embodiment of the present application;

FIG. 5 is a schematic assembly view of a second driver and hold-down assembly of a peristaltic pump as provided by one embodiment of the present application;

FIG. 6 is a schematic assembly view of a first driver and roller assembly of a peristaltic pump as provided by an embodiment of the present application;

FIG. 7 is a schematic structural view of a first snapping mechanism provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a breaking mechanism provided by one embodiment of the present application;

FIG. 9 is a schematic view of a second latching mechanism provided in accordance with an embodiment of the present application for loading a blood bag;

FIG. 10 is a schematic diagram of the sharps collection mechanism and first heat sealing machine provided by one embodiment of the present application;

FIG. 11 is a schematic structural diagram of a sampling mechanism provided by one embodiment of the present application;

FIG. 12 is a schematic flow diagram of a blood collection method provided by one embodiment of the present application;

fig. 13 is a schematic flow chart of a blood collection method according to another embodiment of the present application.

Reference numerals referred to in the above figures are detailed below:

11-a blood collection needle; 12-blood bag for storage; 13-a blood collection line; 14-a bypass line; 16-a needle-guard sleeve; 17-bypass blood bag; 18-a tee; 2-a breaking mechanism; 21-breaking the base; 211-second pipeline through slot; 22-a pull member; 23-a sixth driving member; 3-a heat seal mechanism; 31-a first heat-sealing machine; 32-a second heat-sealing machine; 33-a third heat-sealing machine; 34-a fourth heat-sealing machine; 4-a first snap mechanism; 41-a buckle base; 411 — first barrier; 412-a second barrier; 42-a first catch; 421-first pipeline through slot; 43-a fifth driving member; 5-a peristaltic pump; 51-a fixed seat; 52-a first drive member; 521-a first mandrel; 53-a second drive member; 531-second mandrel; 54-a roller assembly; 541-a rotating frame; 542-tube pressing rod; 5421-rod core; 5422-rotating rod sleeve; 55-a hold down assembly; 551-sliding rail; 5511-a slide track hole; 552-a slider; 5521-a positioning groove; 5522-eccentric wheel hole; 553 — an actuator; 5531-an eccentric wheel; 5532-a tension plate; 5533-a tension spring; 5534-a guide bar; 554-a pressure plate; 56-displacement sensor; 6-a second snap mechanism; 61-bypass blood bag holder; 611-a clamping part; 612-third pipeline through slots; 62-a second fastener; 621-a limiting rod; 63-pipe clamping claws; 631-a clip seat; 632-a first spring plate; 633-a second resilient tab; 7-a sharps collection mechanism; 71-a sharps collection box; 72-hose receiver; 73-start sensor; 8-a sampling mechanism; 81-sampling base; 82-a load station assembly; 821-a mobile station; 823-loading platform; 8231-a loading tank; 83-a third driver; 84-eighth driver.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

In order to explain the technical solutions of the present application, the following detailed descriptions are made with reference to specific drawings and examples.

Referring to fig. 1 and 2, one embodiment of the present application provides a blood collection device for delivering blood along a blood collection line 13 to a blood storage bag 12, comprising a peristaltic pump 5, and at least two heat sealing mechanisms 3; the blood sampling device provided by the embodiment can further comprise a breaking mechanism 2 and a first buckling mechanism 4 which are arranged along the blood sampling pipeline 13, wherein the breaking mechanism 2 and the heat sealing mechanism 3 are both arranged along the blood sampling pipeline 13, the first buckling mechanism 4 and the peristaltic pump 5 are both arranged along the blood sampling pipeline 13, and the first buckling 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 line 13.

The blood collecting apparatus provided by the present embodiment is suitable for a blood bag comprising a storage blood bag 12, a blood collecting needle 11, and a blood collecting line 13 connecting the storage blood bag 12 and the blood collecting needle 11, wherein an anticoagulant is stored in the storage blood bag 12 in advance to prevent blood from coagulating during storage. In the blood sampling device provided by the embodiment, the heat sealing mechanism 3 can heat seal the blood sampling line 13 to form a blood braid for storing blood samples for detection and cross matching; when the heat seal mechanism 3 is opened, the breaking mechanism 2 can act together with the first buckle mechanism 4, and the blood collection vessel line 13 can be torn off on the premise that the sealing performance of the blood bag can be not damaged by the breaking mechanism 2; the peristaltic pump 5 can pump a fluid such as blood or air in the blood collection line 13 from the outside of the blood collection line 13, and can perform quantitative and directional transfer of the fluid in the blood collection line 13.

The blood sampling device provided by the embodiment at least has the following beneficial technical effects:

after the blood sampling device provided by the embodiment finishes blood sampling, the peristaltic pump 5 arranged along the blood sampling pipeline 13 can pump the liquid in the blood storage bag 12 to the blood sampling pipeline 13, and the first buckling mechanism 4, the breaking mechanism 2 and the heat sealing mechanism 3 can break the blood sampling pipeline 13, so that, before the heat sealing mechanism 3 thermally seals the blood collecting line 13 to form a blood braid, firstly, the peristaltic pump 5 is adopted to pump part of blood in the blood storage bag 12 to the blood collecting line 13, the part of blood is fully mixed with anticoagulant pre-stored in the blood storage bag 12, can avoid the blood in the blood braid from coagulating in the storage process, ensure that the blood can be sampled and cross-distributed from the blood braid before the blood in the blood storage bag 12 is used, avoid the sealing performance of the blood bag from being damaged when the blood is sampled from the blood bag, further preventing serious waste of medical resources under the condition that blood can not be matched with wounded and sick.

Moreover, the blood sampling device provided by the embodiment adopts the peristaltic pump 5 to pump blood, and in the process of pumping fluid by the peristaltic pump 5, the fluid only contacts the blood sampling line 13 and does not contact the pump body of the peristaltic pump 5, so that cross contamination between the pump body of the peristaltic pump 5 and the blood is avoided, and blood leakage is not easily caused; the peristaltic pump 5 has good self-priming capability and no backflow phenomenon, can be adapted to the transmission of various liquids (including shear sensitive liquids), gases, solids and multiphase mixtures, and can well pump blood in a hose; moreover, the peristaltic pump 5 does not contact blood, and has the characteristics of long service life and convenient maintenance.

Referring to fig. 3 to 6, in an embodiment of the present application, the peristaltic pump 5 includes a fixing base 51, a first driving member 52 connected to the fixing base 51, a second driving member 53 connected to the fixing base 51, a roller assembly 54, and a pressing assembly 55 connected to the second driving member 53; the roller assembly 54 includes a rotating frame 541 hinged with the first driving member 52, and a pipe pressing rod 542 connected to the rotating frame 541, the rotating frame 541 can rotate around a first rotating shaft, the pipe pressing rod 542 is arranged around the first rotating shaft, and the axial direction of the pipe pressing rod 542 is parallel to the first rotating shaft; the second drive 53 can drive the compacting assembly 55 to switch between a compacting state and a tube change state.

In the peristaltic pump 5 provided in this embodiment, the first driving member 52 and the second driving member 53 connected to the fixing base 51 are respectively used for driving the rotation of the rotating frame 541 and the movement (and/or rotation) of the pressing assembly 55; when the second driving element 53 drives the compressing assembly 55 to switch to the compressing state, the compressing assembly 55 can press a section of the hose (when a plurality of hose pressing rods 542 are provided, the length of the section of the hose should be greater than the distance between two adjacent hose pressing rods 542) on the side surface of the hose pressing rod 542, and at this time, as the first driving element 52 drives the rotating frame 541 to rotate, the hose pressing rods 542 can alternately press the hose and rotate around the first rotating shaft to form a directionally-moving negative pressure area in the hose to drive the fluid in the hose to flow; when the second driving member 53 drives the compressing assembly 55 to switch to the tube replacing state, the compressing 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 conveniently taken out and replaced.

The peristaltic pump 5 provided in this embodiment is provided with a first driving member 52 and a second driving member 53 capable of driving the rotation of the rotating frame 541 and the movement of the compressing assembly 55, respectively, wherein the second driving member 53 drives the compressing assembly 55 to switch between the compressing state and the tube replacing state. Thus, when the hose clamped by the peristaltic pump 5 needs to be replaced, the second driving member 53 can drive the pressing assembly 55 to be switched to a hose replacing state, so that the hose can be conveniently detached and installed; after the hose is installed in place, the second driving member 53 can drive the compressing assembly 55 to switch to the compressing state, and the fluid in the hose can flow directionally and quantitatively along with the rotation of the roller assembly 54. The peristaltic pump 5 provided by the embodiment can enable the hose to be replaced quickly and conveniently, the working efficiency of the peristaltic pump 5 with the hose required to be replaced frequently can be obviously improved, and the peristaltic pump 5 has a better man-machine effect and is particularly suitable for automatic blood sampling equipment and other sampling equipment.

Referring to fig. 3 to fig. 6, in the peristaltic pump 5 of the present embodiment, the first driving element 52 and the second driving element 53 connected to the fixing seat 51 are respectively used for driving the rotation of the rotating frame 541 and the movement (and/or rotation) of the pressing assembly 55; when the second driving element 53 drives the compressing assembly 55 to switch to the compressing state, the compressing assembly 55 can press a section of the hose (when a plurality of hose pressing rods 542 are provided, the length of the section of the hose should be greater than the distance between two adjacent hose pressing rods 542) on the side surface of the hose pressing rod 542, and at this time, as the first driving element 52 drives the rotating frame 541 to rotate, the hose pressing rods 542 can alternately press the hose and rotate around the first rotating shaft to form a directionally-moving negative pressure area in the hose to drive the fluid in the hose to flow; when the second driving member 53 drives the compressing assembly 55 to switch to the tube replacing state, the compressing 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 conveniently taken out and replaced.

Referring to fig. 3 to 6, in an embodiment of the present application, the pressing assembly 55 includes a sliding rail 551 connected to the fixing base 51, a sliding block 552 slidably connected to the sliding rail 551, and a driver 553 for connecting the sliding block 552 and the second driving member 53; the slider 552 is slidable along the slide rail 551 in a direction toward and away from the first rotation axis, and the second driver 53 can drive the slider 552 to slide by the actuator 553.

Specifically, the slider 552 functions to press the hose against the side of the pressure pipe 542; the second driving member 53 can drive the sliding block 552 to move away from the first rotating shaft through the transmission 553 until the pressing assembly 55 is in the tube changing state, and can also drive the sliding block 552 to move close to the first rotating shaft through the transmission 553 until the pressing assembly 55 is in the pressing state. The hose is pressed by the linearly moving sliding block 552, so that the pressure on all parts of the hose is more uniform; the slider 552 is completely disengaged from the roller assembly 54 when in the tube replacement state, facilitating hose replacement. Optionally, the sliding rail 551 and the slider 552 are connected by an axial bearing to reduce the friction force when the slider 552 slides along the sliding rail 551.

Referring to fig. 3 to 6, as a specific embodiment of the present embodiment, a positioning groove 5521 is disposed on a side of the slider 552 opposite to the roller assembly 54, and a width of the positioning groove 5521 gradually increases along a direction away from a bottom surface of the positioning groove 5521. The positioning slot 5521 can position the hose during the process that the second driving member 53 drives the slider 552 to move in the direction close to the first rotation axis by the driver 553, so that the hose can be finally pressed at a predetermined position.

Referring to fig. 3 to 6, as a specific solution of the present embodiment, the fixing base 51 has a rail hole 5511, and two ends of the rail 551 are connected to an inner side wall of the rail hole 5511, so that the rail 551 is disposed in the rail hole 5511, which can reduce the volume of the space occupied by the peristaltic pump 5 and prevent the rail 551 from contacting with impurities. Optionally, the slide rail hole 5511 is a strip-shaped hole or a waist-shaped hole, and the slide rail 551 is disposed along the length direction of the slide rail hole 5511, so as to reduce the influence of the slide rail hole 5511 on the structural strength of the fixing base 51.

Referring to fig. 3 to 6, in an embodiment of the present application, the driver 553 includes an eccentric 5531, the second driving member 53 employs a second motor having a second spindle 531 disposed parallel to the first rotation axis, the eccentric 5531 is connected to the second spindle 531; the side of the slider 552 opposite the second motor is provided with an eccentric 5531 hole 5522 for receiving the eccentric 5531.

In this embodiment, the second motor may be a stepper motor; the second spindle 531 can drive the eccentric 5531 to rotate around a second rotation axis, the eccentric 5531 of the eccentric 5531 has an axial direction parallel to the second rotation axis, and the second spindle 531 is disposed axially away from the eccentric 5531 of the eccentric 5531. Thus, when the eccentric wheel 5531 rotates to a position where the eccentric wheel 5531 is located between the second rotation shaft and the first rotation shaft along with the rotation of the second spindle 531, the second motor drives the sliding block 552 to move to a position close to the first rotation shaft through the eccentric wheel 5531, that is, a position of the sliding block 552 in a pressing state; when the eccentric 5531 rotates to the side of the eccentric 5531 shaft away from the first rotating shaft, the eccentric 5531 drives the sliding block 552 to move to a position away from the first rotating shaft, that is, the position of the sliding block 552 in the tube exchanging state.

Referring to fig. 3 to 6, in an embodiment of the present application, the driver 553 further includes a tension plate 5532 disposed in the hole 5522 of the eccentric wheel 5531, and a tension spring 5533 disposed between the tension plate 5532 and an inner sidewall of the hole 5522 of the eccentric wheel 5531, and a side of the eccentric wheel 5531 opposite to the first rotation axis abuts against the tension plate 5532.

In this embodiment, the tension spring 5533 is always in a compressed state or a free state (i.e. the tension spring 5533 is in a state without any external force), when the eccentric 5531 rotates until the eccentric 5531 is axially located between the second rotating shaft and the first rotating shaft, the sliding block 552 presses the hose against the side surface of the rolling assembly, and at this time, the tension plate 5532 and the hollow inner side wall of the eccentric 5531 are connected by the spring, so that the rolling assembly and the sliding block 552 are always tightly pressed against the hose during the process that the rolling assembly and the sliding block 552 clamp the hose and the rolling assembly rotates.

Referring to fig. 3 to 6, in an embodiment of the present application, the tensioning plate 5532 is formed with a guide hole, the guide hole is disposed at a position between the first rotating shaft and the second core shaft 531, the pressing assembly 55 further includes a guide rod 5534 connected to an inner sidewall of the hole 5522 of the eccentric wheel 5531, an axial direction of the guide rod 5534 is parallel to an axial direction of the tensioning spring 5533, and the guide rod 5534 passes through the guide hole.

In this embodiment, the guide rod 5534 extends in a direction parallel to the first rotation axis and pointing to the second rotation axis, and passes through the guide hole, and the guide rod 5534 and the guide hole can guide the movement of the tension plate 5532, so as to prevent the tension plate 5532 from slipping and shifting to both sides of the eccentric 5531 under the action of the eccentric 5531.

As a preferable mode of this embodiment, the eccentric wheel 5531 has a hole 5522 whose inner wall opposite to the first rotation axis is opened with a mounting hole, and the guide rod 5534 passes through the mounting hole and is connected to the inner wall of the mounting hole, which helps to simplify the process of manufacturing the peristaltic pump 5.

Referring to fig. 3 to 6, in an embodiment of the present application, a tension spring 5533 is disposed around a guide rod 5534, a side of a tension plate 5532 opposite to a first rotation axis is provided with a spring groove, and an end of the spring groove opposite to the tension plate 5532 abuts against a bottom surface of the spring groove, so that the tension spring 5533 can more firmly surround a side wall of the guide rod 5534.

In one embodiment of the present application, the first driving member 52 is a first motor having a first spindle 521 disposed along a first rotation axis, and the rotating frame 541 is connected to the first spindle 521.

In this embodiment, the first motor may be a stepper motor; the first mandrel 521 can drive the rotating frame 541 to rotate around a first rotating shaft, the number of the pipe pressing rods 542 is multiple, each pipe pressing rod 542 is connected with the rotating frame 541, each pipe pressing rod 542 is arranged in a direction parallel to the first rotating shaft, and the distance between each pipe pressing rod 542 and the first rotating shaft is equal. Thus, when the pressing assembly 55 is in a pressing state, each pressing rod 542 sequentially presses the fluid in the hose in a predetermined direction along with the rotation of the first mandrel 521, so that the fluid in the hose is forced to flow in a predetermined direction at a predetermined speed.

Referring to fig. 3 to 6, in an embodiment of the present application, the pressure pipe 542 includes a rod core 5421 connected to the rotating frame 541 and disposed parallel to the first rotating shaft, and a rotating rod sleeve 5422 sleeved on an outer side wall of the rod core 5421, wherein the rotating rod sleeve 5422 is rotatably connected to the rod core 5421.

In this embodiment, the rotating rod sleeve 5422 is hinged to the rod core 5421, so that when the compressing assembly 55 is in a compressing state and each pipe pressing rod 542 sequentially presses fluid in the hose in a preset direction along with the rotation of the first mandrel 521, the rod core 5421 does not rotate relative to the rotating plate, the rotating rod sleeve 5422 rotates around the rod core 5421 under the action of the friction force of the hose, and the effect of reducing the friction force between the hose and the pipe pressing rod 542 can be achieved.

Referring to fig. 3 to 6, in an embodiment of the present application, the peristaltic pump 5 further includes a displacement sensor 56 connected to the fixing base 51, and the displacement sensor 56 is used for detecting a state of the pressing assembly 55.

The displacement sensor 56 is used for detecting the state of the compressing assembly 55, and the start or stop of the second driving element 53 and the first driving element 52 is controlled according to the detection result of the displacement sensor 56, so that the automation level of the peristaltic pump 5 can be improved, and the working efficiency of the peristaltic pump 5 can be further improved. Specifically, when the displacement sensor 56 detects that the pressing assembly 55 is in the pressing state, the displacement sensor 56 can send a stop instruction, and the second driving element 53 stops moving after receiving the sensing instruction, so that the situation that the slider 552 moves away from the first rotating shaft due to over-rotation of the second sensor is avoided, and the slider 552 and the roller assembly 54 can press the hose together is ensured.

Referring to fig. 3 to fig. 6, as a specific solution of the present embodiment, the displacement sensor 56 may adopt a pressure sensor, the pressure sensor is disposed along the guide rail, and the pressure sensor can sense the pressure in the direction pointing from the second rotation axis to the first rotation axis; the pressing assembly 55 further includes a pressure plate 554 connected to the slider 552, the pressure plate 554 being capable of applying a force to the pressure sensor in a direction from the second axis of rotation toward the first axis of rotation when the pressing assembly 55 is operated to the pressed state.

Referring to fig. 2 and 7, in an embodiment of the present application, the first locking mechanism 4 includes a locking base 41 and a first locking member 42 rotatably connected to the locking base 41; the first fastener 42 has a first pipeline through slot 421 for placing the blood sampling pipeline 13, the fastener base 41 has a first blocking part 411 and a second blocking part 412, and the distance between the first blocking part 411 and the first fastener 42 is smaller than the distance between the second blocking part 412 and the first fastener 42; the first blocking portion 411 and the second blocking portion 412 are both arranged opposite to one end of the first pipeline through groove 421, the first blocking portion 411 is located on one side of the first pipeline through groove 421, the second blocking portion 412 is located on the other side of the first pipeline through groove 421, or the first blocking portion 411 and one end of the first pipeline through groove 421 are arranged opposite to each other, the second blocking portion 412 is arranged opposite to the other end of the first pipeline through groove 421, and the first blocking portion 411 and the second blocking portion 412 are located on the same side of the first pipeline through groove 421.

In this embodiment, the first latch mechanism 4 further includes a fifth driving member 43 for driving the first latch 42 to rotate relative to the latch base 41, and the fifth driving member 43 may be a stepping motor; the distance between the second blocking part 412 and the first fastener 42 is required to be enough to accommodate the blood collection tube line 13 and clamp the blood collection tube line 13 between the second blocking part 412 and the first fastener 42; the distance between the first blocking portion 411 and the first catch 42 should be less than twice the thickness of the blood collection line 13, i.e. it should be sufficient to stop the flow of fluid in the blood collection line 13. The first blocking portion 411 and the second blocking portion 412 are not arranged in the same manner, but the principle is similar, and the working principle of the first latch mechanism 4 will be described below by taking the example that the first blocking portion 411 is arranged above the first latch 42 and close to the left side of the first pipeline through groove 421, and the second blocking portion 412 is arranged below the first latch 42 and close to the left side of the first pipeline through groove 421. When the heat seal mechanism 3 is started, the first buckle mechanism 4 can tear the blood production line 13. Specifically, the first fastener 42 rotates clockwise, and the upper end of the blood collection tube 13 rotates along with the rotation of the first fastener 42 in the direction away from the first blocking portion 411, so that when the blood collection tube 13 is pulled, the blood collection tube 13 can be clamped between the first fastener 42 and the second blocking portion 412 under the action of friction force, the rotation of the first fastener 42 can provide pulling force for the blood collection tube 13, and the second blocking portion 412 plays a limiting role in limiting the blood collection tube 13, so that the pulling force is further increased; the blood collection vessel line 13 is continuously subjected to pulling force in the rotating process until the blood collection vessel line 13 is broken at the heat seal position, and the blood collection vessel line 13 is torn off. When the first fastener 42 rotates counterclockwise, the upper end of the blood collection line 13 located in the first line through 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 the direction away from the first blocking portion 411, at this time, the first fastener 42 and the first blocking portion 411 can seal the blood collection line 13, and the flow of fluid in the blood collection line 13 is prevented.

Referring to fig. 2 and 8, in one embodiment of the present application, the break mechanism 2 includes a break base 21, and a pull member 22 rotatably connected to the break base 21; the breaking base 21 is provided with a second pipeline through groove 211 for placing the blood collection pipeline 13, the pulling piece 22 is arranged opposite to one end of the second pipeline through groove 211, and the pulling piece 22 can rotate around the breaking base 21; there is a gap between the pull member 22 and the break base 21.

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, and the sixth driving member 23 may be a stepping motor; the gap between the pull member 22 and the break-off base 21 should be sufficient to accommodate the blood collection line 13. Referring to fig. 1, for the conventional universal blood bag in which the bypass line 14 is connected to the blood collection line 13 through the three-way member 18, a plunger is disposed in the three-way member 18, so that the medical staff can flow blood into the blood storage bag 12 along the blood collection line 13 only by breaking the plunger, and the pulling member 22 can rotate around the breaking base 21 in a reciprocating manner under the driving of the sixth driving member 23 when the plunger needs to be broken, for example, when the blood collection of the bypass blood bag 17 is completed and blood needs to be input into the blood storage bag 12, thereby achieving the automatic breaking of the plunger.

Referring to fig. 2 and 9, in an embodiment of the present application, the blood collecting apparatus further includes a second locking mechanism 6 disposed at one side of the breaking mechanism 2, the second locking mechanism 6 includes a bypass blood bag holder 61, and a second locking member 62; the bypass blood bag holder 61 has a clamping portion 611, the clamping portion 611 is provided with a third pipeline through groove 612, the second clamping member 62 has a limiting rod 621, the limiting rod 621 is disposed opposite to one end of the third pipeline through groove 612, and the limiting rod 621 can move along the edge of the clamping portion 611.

In this embodiment, the second fastening mechanism 6 further includes a seventh driving element (not shown in the figure) for driving the limiting rod 621 to move along the edge of the fastening portion 611, and the seventh driving element may be a stepping motor; the blood sampling device provided by the embodiment can be suitable for blood bags provided with a bypass pipeline 14 and a bypass blood bag 17, the bypass pipeline 14 is connected with the blood sampling pipeline 13 between the breaking mechanism 2 and the first buckling mechanism 4, and the heat sealing mechanism 3 can form heat sealing at least at two points from the connection point of the bypass pipeline 14 and the blood sampling pipeline 13 to the storage blood bag 12 so as to ensure that at least one section of blood braid can be formed; the gap between the stopper 621 and the clamping portion 611 should be less than twice the thickness of the blood collection tube 13, that is, the gap can prevent the flow of fluid in the blood collection tube 13. When the limiting rod 621 moves to a position avoiding the extending direction of the third pipeline through groove 612, the third pipeline through groove 612 can play a role in clamping and fixing the bypass pipeline 14; in the process that the limiting rod 621 moves in the extending direction of the third pipeline through groove 612, the limiting rod and the clamping portion 611 can be used together to clamp the bypass pipeline 14, and fluid is prevented from flowing along the bypass pipeline 14, that is, the on-off control of the bypass pipeline 14 is realized. Optionally, the blood collection device further comprises a weighing mechanism (not shown in the figures) for measuring the blood content in the bypass permit 17 by weighing the second catch mechanism 6, or alternatively, the blood collection device further comprises an opto-electronic switch for measuring the blood content in the bypass permit 17 by measuring the blood level in the bypass blood bag 17.

Referring to fig. 2, 9 and 11, in an embodiment of the present application, the blood sampling apparatus further includes a sampling mechanism 8 disposed below the second latch mechanism 6, the second latch mechanism 6 further includes a tube-locking claw 63 connected to the bypass blood bag holder 61, and the tube-locking claw 63 is disposed at a position between the sampling mechanism 8 and the second latch 62; the sampling mechanism 8 includes a sampling base 81, a loading table assembly 82, and a third drive member 83 for driving the loading table assembly 82 to move in a direction to approach or move away from the tube gripping jaw 63; the loading table assembly 82 includes a moving table 821 slidably connected to the sampling base 81, a fourth driver (not shown in the drawings) connected to the moving table 821, and a loading table 823 hinged to the moving table 821, wherein a plurality of loading slots 8231 for loading test tubes are provided in the loading table 823, and the fourth driver can drive the loading table 823 to rotate so as to align one of the loading slots 8231 with the tube clamping claw 63.

The blood sampling device provided by the embodiment is suitable for a blood bag, in which a bypass line 14 for blood inlet is connected to a bypass blood bag 17 and a bypass line 14 for sample retention is connected to the bypass blood bag, two bypass lines 14 may be respectively connected to two ends of the bypass blood bag 17, wherein one end of the bypass line 14, which is not connected to the blood sampling line 13 and is far 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 provided with a needle protection sleeve 16 surrounding the sample retention needle, and the bypass blood bag 17 is arranged between a tube clamping claw 63 and a clamping part 611; the third driving member 83 may be an air cylinder or a stepping motor, and the fourth driving member may be a stepping motor, wherein the third driving member 83 is used for driving the loading platform assembly 82 to move towards or away from the pipe clamping jaw 63, and the fourth driving member is used for driving the loading platform 823 to rotate around the vertical direction. The third driving member 83 and the fourth driving member can drive the loading platform 823 to move and rotate according to the time sequence control, so that test tubes loaded in the loading grooves 8231 and used for collecting blood samples from the bypass blood bags 17 can be sequentially aligned with the needle protection sleeves 16 clamped by the tube clamping claws 63, and sample retention needles can be sequentially inserted into the test tubes; the fourth driver may then further control the rotation of the loading table 823 to shake the blood sample in the test tube to avoid coagulation of the blood sample.

Referring to fig. 2, 9 and 11, as a specific solution of the present embodiment, the pipe clamping claw 63 includes a spring sheet seat 631 connected to the supporting portion, a first spring sheet 632 connected to a side of the spring sheet seat 631 away from the supporting portion, and a second spring sheet 633 connected to a side of the spring sheet seat 631 away from the supporting portion; the first elastic sheet 632 and the second elastic sheet 633 are oppositely arranged; one end of the first resilient tab 632, which is far away from the tab seat 631, is folded back in a direction away from the second resilient tab 633, and one end of the second resilient tab 633, which is far away from the tab seat 631, is folded back in a direction away from the first resilient tab 632. The part of the first elastic sheet 632, which is turned over in the direction away from the second elastic sheet 633, and the part of the second elastic sheet 633, which is turned over in the direction away from the first elastic sheet 632, can form a guiding structure, so that medical staff can conveniently clamp the needle protection sleeve 16 on the clamping pipe jaw 63.

As a specific embodiment of this embodiment, the sampling mechanism 8 further includes an eighth driving member 84 connected to the moving table 821, moving up and down with the moving table 821, and controlling the moving table 821 to rotate 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 may be a stepping motor, the eighth driving member 84 may drive the loading table 823 to rotate around the horizontal direction through the moving table 821, and the eighth driving member 84 and the fourth driving member cooperate to shake the blood sample in the test tube better, so as to prevent the blood sample from being layered while avoiding coagulation of the blood sample.

Referring to fig. 2 and 10, in an embodiment of the present application, the blood collecting apparatus further includes a sharps collecting mechanism 7 disposed at one side of the breaking mechanism 2, the sharps collecting mechanism 7 includes a sharps collecting box 71, and a hose container 72 disposed between the sharps collecting box 71 and the breaking mechanism 2; the heat sealing mechanism 3 comprises 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 sharp instrument collecting mechanism 7, the second heat sealing machine 32 is arranged between the breaking mechanism 2 and the first buckling mechanism 4, and the third heat sealing machine 33 is arranged between the first buckling mechanism 4 and the blood storage bag 12.

The first heat sealing machine 31, the second heat sealing machine 32 and the third heat sealing machine 33 can all play a role in heat sealing the blood collection tube line 13, and in the heat sealing process, the blood collection tube line 13 is easy to tear, and the blood collection tube line 13 can be torn by the breaking mechanism 2 and the first buckling mechanism 4 in the process, so that the blood in the blood storage bag 12 and the blood collection tube line 13 is prevented from being polluted, and the blood in the blood collection tube line 13 can be prevented from flowing out; the second and third heat sealing machines 32 and 33 are capable of forming a length of blood braid that can be stored with the storage bag 12, and the sample of blood in the braid can be used for testing and cross matching when using blood from the storage bag 12; the blood sampling needle 11 is placed in a sharp instrument collector, the blood sampling line 13 is placed in the hose container 72, then the first heat sealing machine 31 and the breaking mechanism 2 are started to connect, one end, connected with the blood sampling needle 11, of the blood sampling line 13 can be heat sealed and broken, and the blood sampling line 13 with the blood sampling needle 11 falls into the sharp instrument collection box 71, so that the blood sampling needle 11 is recovered, and safety and convenience are improved.

Referring to fig. 2, as an embodiment of the present embodiment, the heat sealing mechanism 3 may further include a fourth heat sealing machine 34 disposed between the third heat sealing machine 33 and the blood storage bag 12, so that the blood sampling apparatus can form two blood strands.

Referring to fig. 10, as a specific solution of this embodiment, the sharps collecting mechanism 7 further includes a start sensor 73, the start sensor 73 may be a pressure lever sensor, the start sensor 73 is configured to send a sensing signal when the blood collection line 13 is clamped to the hose container 72, and the first heat sealing machine 31 and the breaking mechanism 2 are started after receiving the third sensing signal, so as to heat seal and break the end of the blood collection line 13 connected with the blood collection needle 11, and make a section of the blood collection line 13 with the blood collection needle 11 fall into the sharps collecting box 71. Preferably, the clamping groove of the hose container 72 can accommodate the blood collection line 13 without clamping the blood collection line 13 therein, and the blood collection needle 11 cannot pass through, so that part of the blood collection line 13 with the blood collection needle 11 can be ensured to smoothly fall into the sharp container collection box 71.

The present application also provides a blood collection method for transporting blood along blood collection line 13 to storage blood bag 12 and along bypass line 14 to bypass blood bag 17. To better illustrate the blood collection method provided by the present embodiment and to provide a preferred embodiment for the above blood collection device, the structure of the blood collection device and the blood bag adapted to the blood collection device will be first described. It should be understood that the structural descriptions of the blood collecting device and the blood bag are provided herein for convenience of illustrating the blood collecting method provided by the present embodiment, and should not be construed as limiting the blood collecting method provided by the present embodiment, which can be adapted to the following blood collecting device lacking a partial structure as well.

The blood bag comprises a blood sampling needle head 11, a blood storage bag 12, a blood sampling pipeline 13 communicated with the blood sampling needle head 11 and the blood storage bag 12, a bypass pipeline 14 communicated with the blood sampling pipeline 13 from the side surface of the blood sampling pipeline 13, a sample reserving needle head arranged at one end of the bypass pipeline 14 far away from the blood sampling pipeline 13, a needle protecting sleeve 16 sleeved on the outer side of the sample reserving needle head, and a bypass blood bag 17 arranged on the path of the bypass pipeline 14; the blood sampling device comprises a breaking mechanism 2, a second heat sealing machine 32, a first buckling mechanism 4, a third heat sealing machine 33, a peristaltic pump 5, a fourth heat sealing machine 34, a second buckling mechanism 6, a sampling mechanism 8, a sharp instrument collecting mechanism 7 and a first heat sealing machine 31, wherein the breaking mechanism 2, the second heat sealing machine 32, the first buckling mechanism 4, the third heat sealing machine 33, the peristaltic pump 5 and the fourth heat sealing machine 34 are arranged along a bypass pipeline 14 and are used for bearing a bypass blood bag 17, the sampling mechanism 8 is arranged on one side, away from the blood sampling pipeline 13, of the bypass blood bag 17, the sharp instrument collecting mechanism 7 is arranged on one side of the breaking mechanism 2, and the first heat; the bypass line 14 connects the blood collection line 13 on the side of the breaking mechanism 2 remote from the second heat sealing machine 32; the breaking mechanism 2, the heat sealing mechanism 3, the first buckling mechanism 4, the peristaltic pump 5, the second buckling mechanism 6, the sharp instrument collecting mechanism 7 and the sampling mechanism 8 can be arranged on an integral supporting structure, and the integral supporting structure can be a blood sampling workbench for supporting each blood sampling device.

Referring to fig. 12, the blood sampling method specifically includes the following steps:

bypass blood bag sampling S1: after the blood sampling needle 11 is punctured into a blood vessel, a blood sampling pipeline 13 for connecting and storing a blood bag 12 is blocked by a first buckling mechanism 4 until blood with a first preset volume flows into a bypass blood bag 17 along a bypass pipeline 14;

blood bag storage and blood sampling S2: a second buckling mechanism 6 is adopted to block a bypass pipeline 14 for connecting a bypass blood bag 17, and the first buckling mechanism 4 is opened until the blood with a second preset volume flows into a blood storage bag 12 along a blood collection pipeline 13;

removing the needle S3: pulling out the blood sampling needle 11, placing the blood sampling needle 11 in the sharp instrument collection mechanism 7, thermally sealing the blood sampling pipeline 13 by using a first heat sealing machine 31, and opening the second buckling mechanism 6 after breaking the blood sampling pipeline 13 by using a breaking mechanism 2;

hemizygous blood collection line S4: and pumping a third preset volume of blood in the blood storage bag 12 to the blood collection pipeline 13 by using the peristaltic pump 5, thermally sealing the blood collection pipeline 13 by using a second heat sealing machine 32 and a third heat sealing machine 33, and tearing off the blood collection pipeline 13 by using the breaking mechanism 2.

The blood sampling method provided by the embodiment at least has the following beneficial technical effects:

in the blood collection method provided by this embodiment, the peristaltic pump 5 disposed along the blood collection line 13 can pump the liquid in the blood storage bag 12 to the blood collection line 13 before the second heat sealing machine 32 and the third heat sealing machine 33 heat seal the blood collection line 13, so that before the heat sealing mechanism 3 heat seals the blood collection line 13 to form a blood braid, the peristaltic pump 5 is first used to pump a part of the blood in the blood storage bag 12 to the blood collection line 13, and the part of the blood is fully mixed with the anticoagulant pre-stored in the blood storage bag 12, so as to prevent the blood in the blood braid from coagulating during storage, ensure that the blood in the blood storage bag 12 can be sampled from the blood braid and cross-matched before being used, avoid the sealing performance of the blood bag from being damaged due to the sampling from the blood bag, and further prevent serious waste of medical resources under the condition that the blood cannot be matched with wounded and patients.

As a specific embodiment of this embodiment, in the step S4 of heat-sealing the blood collection pipeline, for the blood collection device provided with the fourth heat-sealing machine 34, the fourth heat-sealing machine 34 should be opened simultaneously with the second heat-sealing machine 32 and the third heat-sealing machine 33 to form two blood braids.

As a preferable scheme of this embodiment, the value of the first preset volume is determined by the number of test tubes required for sampling detection, the volume of the blood sample in each test tube should be not less than 3 ml, and the range of the first preset volume may be 18-24 ml; the value of the second preset volume is determined by the blood sampling amount and the working mode of the blood sampling device, and the second preset volume range can be 200 plus 220 ml, or can be 400 plus 420 ml; the value range of the third preset volume is determined by the number of blood braids, the volume of the blood sample in each blood braid should be not less than 3 ml, and the value range of the third preset volume can be 3-12 ml.

Referring to fig. 13, in an embodiment of the present application, after the blood sampling step S1, a test tube sample retaining step S5 is further included, and the test tube sample retaining step S5 specifically includes: adopt sampling mechanism 8 to aim at the test tube in proper order at cardboard pipe claw 63 to insert the sample needle head in proper order into the test tube, then adopt sampling mechanism 8 to shake the blood of even test tube.

As a preferable scheme of this embodiment, during the test tube sample retention step S5, the second latch mechanism 6 is closed to avoid waste caused by excessive blood flowing into the bypass blood bag 17; the test tube sample reserving step S5 may be performed after the bypass blood bag blood sampling step S1, as long as it is satisfied that there is enough blood in the bypass blood bag 17 for sample reserving at this time, and preferably, the test tube sample reserving step S5 may be performed simultaneously with the storage blood bag blood sampling step S2.

Referring to fig. 13, in an embodiment of the present application, after the needle removing step S3 and before the blood collection tube sealing step S4, the method further includes a preprocessing step S6, and the preprocessing step S6 specifically includes: peristaltic pump 5 is reversed such that a third preset volume of fluid flows from bypass blood bag 17.

By providing the preprocessing step S6, waste of blood samples can be avoided, and excessive blood samples can be prevented when the bypass blood bag 17 is discarded; moreover, by setting the preprocessing 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-.

The blood collecting device and the blood collecting method provided by the embodiments of the application can be applied to human body blood collection, and the application scenes of the blood collecting device and the blood collecting method include but are not limited to blood donation, preoperative autologous blood collection, blood collection for detection and the like; the method can also be used for blood sampling of living bodies such as animals, and application scenes of the method include but are not limited to medical blood sampling, experimental blood sampling, detection blood sampling and the like of living bodies such as animals.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A blood sampling device is used for conveying blood to a blood storage bag along a blood sampling pipeline and is characterized by comprising a peristaltic pump and at least two heat sealing mechanisms; the heat seal mechanism is arranged along the blood collection vessel line, and the peristaltic pump is arranged along the blood collection vessel line; the peristaltic pump is capable of pumping liquid within the storage bag to the blood collection line.

2. The lancing device of claim 1, wherein the peristaltic pump comprises a holder, a first drive member coupled to the holder, a second drive member coupled to the holder, a roller assembly, and a compression assembly coupled to the second drive member; the roller assembly comprises a rotating frame hinged with the first driving piece and a pipe pressing rod connected with the rotating frame, the rotating frame can rotate around a first rotating shaft, the pipe pressing rod is arranged around the first rotating shaft, and the axial direction of the pipe pressing rod is parallel to the first rotating shaft; the second driving piece can drive the compaction assembly to switch between a compaction state and a tube replacement state.

3. The lancing device of claim 2, wherein the compression assembly includes a slide coupled to the holder, a slider movably coupled to the slide, and an actuator for coupling the slider and the second drive member; the sliding block can slide along the sliding rail in a direction close to or far away from the first rotating shaft, the driver comprises an eccentric wheel, the second driving piece adopts a second motor, the second motor is provided with a second mandrel arranged in parallel with the first rotating shaft, and the eccentric wheel is connected with the second mandrel; and one side of the sliding block, which is opposite to the second motor, is provided with an eccentric wheel hole for accommodating the eccentric wheel.

4. The lancing device of claim 3, wherein the actuator further comprises a tension plate disposed within the eccentric aperture, a guide rod coupled to an inner sidewall of the eccentric aperture, and a tension spring disposed between the tension plate and the inner sidewall of the eccentric aperture; one side of the eccentric wheel opposite to the first rotating shaft is abutted against the tensioning plate; the tensioning plate is provided with a guide hole, the guide hole is arranged at a position between the first rotating shaft and the second mandrel in a avoiding mode, the axial direction of the guide rod is parallel to the axial direction of the tensioning spring, and the guide rod penetrates through the guide hole.

5. The lancing device of any one of claims 1-4, further comprising a first snap mechanism disposed along the lancing line, the first snap mechanism comprising a snap mount and a first snap member rotatably coupled to the snap mount; the first buckling piece is provided with a first pipeline through groove for placing the blood sampling pipeline, the buckling base is provided with a first blocking part and a second blocking part, and the distance between the first blocking part and the first buckling piece is smaller than the distance between the second blocking part and the first buckling piece; first block portion with the second block portion all with wherein one end that first pipeline led to the groove sets up relatively, just first block portion is located one side that first pipeline led to the groove, the second block portion is located the opposite side that first pipeline led to the groove, perhaps, first block portion with wherein one end that first pipeline led to the groove sets up relatively, the second block portion with the other end that first pipeline led to the groove sets up relatively, first block portion with the second block portion is located the homonymy that first pipeline led to the groove.

6. The lancing device of claim 5, further comprising a break mechanism disposed along the lancing line, the first snap mechanism and the peristaltic pump each being disposed between the break mechanism and the blood storage bag; the breaking mechanism comprises a breaking base and a pulling piece which is rotatably connected with the breaking base; the base of breaking has and is used for placing the second pipeline that adopts the blood vessel line leads to the groove, pull the piece with the one end that the second pipeline led to the groove sets up relatively, and pull the piece and can wind the base of breaking rotates.

7. The lancing device of claim 6, further comprising a second catch mechanism disposed on one side of the break mechanism, the second catch mechanism comprising a bypass blood bag holder, and a second catch; the bypass blood bag support is provided with a clamping portion, the clamping portion is provided with a third pipeline through groove, the second buckling piece is provided with a limiting rod, the limiting rod is opposite to one end of the third pipeline through groove, and the limiting rod can move along the edge of the clamping portion.

8. The lancing device of claim 7, further comprising a sampling mechanism disposed below the second latching mechanism, the second latching mechanism further comprising a tube trap coupled to the bypass blood bag holder, the tube trap disposed at a position between the sampling mechanism and the second latch; the sampling mechanism comprises a sampling base, a loading platform assembly and a third driving piece for driving the loading platform assembly to move in a direction close to or far away from the pipe clamping jaw; the loading platform assembly comprises a moving platform, a fourth driving part and a loading platform, the moving platform is connected with the sampling base in a sliding mode, the fourth driving part is connected with the moving platform, the loading platform is hinged to the moving platform, a plurality of loading grooves used for loading test tubes are formed in the loading platform, and the fourth driving part can drive the loading platform to rotate so that one of the loading grooves is aligned with the tube clamping claw.

9. The lancing device of claim 6, further comprising a sharps collection mechanism disposed on one side of the breaking mechanism, the sharps collection mechanism comprising a sharps collection cartridge, and a hose receiver disposed between the sharps collection cartridge and the breaking mechanism.

10. The lancing apparatus of claim 9, wherein the heat sealing mechanism comprises a first heat seal disposed opposite the sharps collection mechanism, a second heat seal disposed between the breaking mechanism and the first latching mechanism, and a third heat seal disposed between the first latching mechanism and the blood storage bag.

11. A method of collecting blood for transporting blood along a blood collection line to a storage blood bag and along a bypass line to a bypass blood bag, comprising the steps of:

12. The blood collection method according to claim 11, further comprising a test tube sample retention step after the bypass blood bag blood collection step, wherein the test tube sample retention step specifically comprises: adopt sampling mechanism to aim at the test tube in proper order the cardboard pipe claw to will leave the appearance syringe needle and insert in proper order the test tube, then adopt sampling mechanism to shake evenly the blood of test tube.

13. The method for collecting blood according to claim 11, wherein after the step of removing the needle and before the step of thermally sealing the blood collection line, the method further comprises a pretreatment step, wherein the pretreatment step specifically comprises: reversing the peristaltic pump to cause the third preset volume of fluid to flow out of the bypass blood bag.