Blood extraction device for hematology analyzer

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a blood extraction device for a hematology analyzer, which comprises an electric telescopic frame and a detection module, the electric telescopic frame is positioned on one side of a hematology analyzer main body and is connected with a base, a plurality of clamping grooves I are formed in the electric telescopic frame, and the detection module is connected with the electric telescopic frame. An extraction needle cylinder is detachably installed in the first clamping groove, an extraction needle head is arranged at one end of the extraction needle cylinder, a piston is movably connected to the interior of the extraction needle cylinder in a sealed mode, the detection cylinder is driven to descend through stretching and retracting of the electric telescopic frame, and in the descending process of the detection cylinder, after the detection module detects the layering position of plasma and blood cells, the extraction needle head is connected to the extraction needle cylinder; the controller controls the electric telescopic frame to move, at the moment, the push rod is pulled, the extraction needle head is just located above the layering position, the plasma is extracted into the needle cylinder, one-time plasma extraction is achieved through accurate detection of the detection module, and waste of the plasma is reduced as much as possible.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical appliances, and in particular relates to a blood extraction device for a blood cell analyzer. Background Art

[0002] A blood cell analyzer is a common blood test device in the laboratory department of a hospital. It analyzes, identifies and counts different types of blood cells to quickly obtain blood cell data and assist doctors in clinical diagnosis and treatment.

[0003] However, some blood cell analyzers require centrifugation of blood before use, and then extract plasma for testing. For example, common biochemical tests require the elimination of interference from blood cells. During the test, the upper layer of plasma after centrifugation is extracted and tested separately. Currently, when extracting plasma, some are manually extracted, which is more troublesome and prone to extracting a small amount of blood cells. Others are extracted through a blood extraction device. However, when using the existing blood extraction device, a rubber dropper is movably connected to the bottom of the extraction device to extract plasma. Often, due to the limited amount of the rubber dropper, when there is a lot of blood, multiple plasma extractions are required, and a lot of plasma will remain in the blood collection tube. Therefore, in response to the above problems, we have proposed a blood extraction device for a blood cell analyzer. Utility Model Content

[0004] In view of the above problems, the purpose of the present invention is to provide a blood extraction device for a hematology analyzer, which can realize one-time extraction of plasma and minimize the waste of plasma.

[0005] To achieve the above objectives, the present invention adopts a technical solution: a blood extraction device for a blood cell analyzer, comprising an electric telescopic frame and a detection module, wherein the electric telescopic frame is located on one side of the blood cell analyzer body and is connected to the base, the electric telescopic frame is provided with a plurality of card slots 1, in which an extraction syringe is detachably installed, an extraction needle is provided at one end of the extraction syringe, a piston is sealably and movably connected to the interior of the extraction syringe, a push rod is provided on the piston, one end of the push rod extends to the outside of the extraction syringe, the electric telescopic frame is provided with a plurality of detection cylinders, the plurality of detection cylinders are arranged in a one-to-one correspondence with the positions of the plurality of card slots 1, when the extraction syringe is installed in the card slot 1, the extraction syringe is located inside the detection cylinder, the detection module is used to detect the stratification position between plasma and blood cells, the detection module includes a sensor connected to the bottom of the detection cylinder, a microprocessor electrically connected to the sensor, and a controller electrically connected to the microprocessor, the controller is electrically connected to the electric telescopic frame, and the extraction needle is located above the sensor.

[0006] The beneficial effects of the present invention are as follows: the detection cylinder is driven to descend by the extension and retraction of the electric telescopic frame. During the descent of the detection cylinder, after the detection module detects the position of the plasma and blood cell stratification, the controller controls the movement of the electric telescopic frame. At this time, the push rod is pulled, and the extraction needle is just located above the stratification, and the plasma is extracted into the interior of the syringe. Through the accurate detection of the detection module, the plasma is extracted at one time, and the waste of plasma is minimized.

[0007] In order to facilitate the extraction of as much plasma as possible;

[0008] As a further improvement of the above technical solution: the electric telescopic frame includes two electric telescopic rods connected to the base and a top plate connected to the tops of the two electric telescopic rods, multiple card slots are opened on the top plate, and the electric telescopic rods are electrically connected to the controller.

[0009] The beneficial effect of this improvement is: the extraction syringe is stuck inside the card slot, and then the electric telescopic rod drives the top plate to descend, and the detection tube descends at the same time. When the detection module detects the stratification, the controller controls the electric telescopic rod to stop descending. At this time, the extraction needle is just above the stratification, and the plasma can be accurately extracted as much as possible, reducing the waste of plasma.

[0010] To facilitate the extraction of plasma;

[0011] As a further improvement of the above technical solution: an extraction rack is provided on the top plate, and a slide groove is provided on the inner walls at both ends of the extraction rack, a slide plate is slidably connected in the slide groove, and a plurality of slots 2 corresponding to slots 1 are provided on the slide plate, and the upper end of the push rod is movably installed in slot 2, and a screw rod is rotatably connected to the top plate, and the screw rod passes through the slide plate and extends to the outside of the extraction rack, and the screw rod is threadedly connected to the slide plate, and the screw rod is rotatably connected to the upper end of the extraction rack, and a motor is provided on the extraction rack, and the output end of the motor is connected to the screw rod.

[0012] The beneficial effect of this improvement is: the upper end of the push rod is clamped in the second clamping groove. When plasma needs to be extracted, the motor is started, the motor drives the screw to rotate, and the rotating screw drives the slide plate to slide upward inside the slide groove and drives the push rod to move upward. At this time, the push rod drives the piston to form a negative pressure inside the extraction syringe, so that plasma enters the extraction syringe.

[0013] In order to facilitate the placement of blood collection tubes;

[0014] As a further improvement of the above technical solution: the base is provided with a plurality of test tube holders coaxially arranged with the detection tube.

[0015] The beneficial effect of this improvement is that the setting of the test tube holder allows the blood collection tube after centrifugation to be placed inside the test tube holder during plasma extraction, thereby facilitating accurate positioning of the blood collection tube.

[0016] In order to maintain the stability of the blood collection tube;

[0017] As a further improvement of the above technical solution: a friction ring is provided in the test tube holder.

[0018] The beneficial effect of this improvement is that the friction ring can squeeze the blood collection tube after it enters the test tube holder, so that the blood collection tube remains stable and vertical, making it easier for the extraction needle to be accurately inserted into the blood collection tube and extract plasma.

[0019] In order to maintain the stability of the blood cell analyzer body and the extraction device;

[0020] As a further improvement of the above technical solution: a plurality of suction cups are provided at the bottom of the base.

[0021] The beneficial effect of this improvement is that the provision of multiple suction cups can firmly adsorb the base on the operating table during use, avoiding movement of the base caused by accidental contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 This is a side structural diagram of the present utility model;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0025] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of A in the middle;

[0026] Figure 5 It is a partial structural diagram of the utility model. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0028] like Figure 1-5As shown, a blood extraction device for a blood cell analyzer includes an electric telescopic frame and a detection module. The electric telescopic frame is located on one side of the blood cell analyzer body 2 and is connected to the base 1. The electric telescopic frame is provided with a plurality of card slots 4. An extraction syringe 5 is detachably installed in the card slot 4. An extraction needle 6 is provided at one end of the extraction syringe 5. The internal sealing of the extraction syringe 5 is movably connected to a piston 7. A push rod 8 is provided on the piston 7. One end of the push rod 8 extends to the outside of the extraction syringe 5. A plurality of detection cylinders 9 are provided on the electric telescopic frame. The detection cylinder 9 is arranged in a one-to-one correspondence with the positions of the plurality of card slots 4. When the extraction syringe 5 is installed in the card slot 4, the extraction syringe 5 is located inside the detection cylinder 9. The detection module is used to detect the stratification position between plasma and blood cells. The detection module includes a sensor 1001 connected to the bottom of the detection cylinder 9, a microprocessor 1002 electrically connected to the sensor 1001, and a controller 1003 electrically connected to the microprocessor 1002. The controller 1003 is electrically connected to the electric telescopic frame. The extraction needle 6 is located above the sensor 1001.

[0029] Specifically, when performing plasma extraction, multiple plasmas of the same test type are extracted according to the categories that can be detected by the blood cell analyzer main body 2 used. The amount of blood drawn for the same test type in clinical practice is the same, so the amount of plasma after centrifugation is also the same. Multiple test tubes 9 and multiple extraction syringes 5 can extract the same test type of plasma from multiple patients at the same time, and manually push the extraction syringe 5 from the front of the card slot 4 into the card slot 4. During the use of the card slot 4, it is only necessary that the extraction syringe 5 does not fall during the up and down movement. Then, the blood collection tube after centrifugation is placed under the corresponding detection tube 9, and then the electric telescopic frame is started to drive the extraction syringe 5, the detection tube 9, etc. to descend. As the detection tube 9 descends, part of the blood collection tube enters the interior of the detection tube 9. When the sensor 1001 is located at the position where the plasma and blood cells are layered, the sensor 100 1 receives the signal and transmits the signal to the microprocessor 1002. After receiving the signal, the microprocessor 1002 processes the signal and transmits it to the controller 1003. The controller 1003 controls the electric telescopic frame to stop moving. The sensor 1001 can be an optical sensor 1001, an ultrasonic sensor 1001, etc. This is a prior art and will not be described in detail here. At the same time, the extraction needle 6 enters the blood collection tube and is located above the sensor 1001, that is, above the layer. Then, the push rod 8 is pulled up, and the push rod 8 drives the piston 7 to form a negative pressure environment inside the extraction syringe 5, extracting the plasma into the extraction syringe 5. Then, the extraction syringe 5 is removed, and the blood cell analyzer main body 2 can detect the plasma. In this process, the extraction syringe 5 solves the problem of multiple extractions of the traditional rubber dropper, and the setting of the detection module also minimizes the waste of plasma.

[0030] Preferably, the electric telescopic frame includes two electric telescopic rods 301 connected to the base 1 and a top plate 302 connected to the tops of the two electric telescopic rods 301. The plurality of card slots 4 are all opened on the top plate 302. The electric telescopic rod 301 is electrically connected to the controller 1003, and the extraction syringe 5 is stuck inside the card slot 4. Then the electric telescopic rod 301 drives the top plate 302 to descend, and the detection tube 9 descends at the same time. When the detection module detects the stratification, the controller 1003 controls the electric telescopic rod 301 to stop descending. At this time, the extraction needle 6 is just above the stratification, so that as much plasma as possible can be extracted accurately, reducing the waste of plasma.

[0031] Preferably, an extraction rack 11 is provided on the top plate 302, and a slide groove 12 is provided on the inner wall of both ends of the extraction rack 11, and a slide plate 13 is slidably connected in the slide groove 12, and a plurality of second card slots 14 corresponding to the first card slot 4 are provided on the slide plate 13, and the upper end of the push rod 8 is movably installed in the second card slot 14, and a screw rod 15 is rotatably connected to the top plate 302, and the screw rod 15 passes through the slide plate 13 and extends to the outside of the extraction rack 11, and the screw rod 15 is threadedly connected to the slide plate 13, and the screw rod 15 is threadedly connected to the slide plate 13. The rod 15 is rotatably connected to the upper end of the extraction frame 11. The extraction frame 11 is provided with a motor 16. The output end of the motor 16 is connected to the screw 15, and the upper end of the push rod 8 is clamped in the second card slot 14. When plasma needs to be extracted, the motor 16 is started, and the motor 16 drives the screw 15 to rotate. The rotating screw 15 drives the slide plate 13 to slide upward inside the slide groove 12 and drives the push rod 8 to move upward. At this time, the push rod 8 drives the piston 7 to form a negative pressure inside the extraction syringe 5, so that plasma enters the extraction syringe 5.

[0032] Preferably, the base 1 is provided with a plurality of test tube holders 17 coaxially arranged with the detection tube 9. The test tube holders 17 can be placed inside the test tube holders 17 during plasma extraction, so as to facilitate accurate positioning of the blood collection tubes.

[0033] Preferably, a friction ring 18 is provided in the test tube holder 17, wherein the friction ring 18 can be made of rubber, silicone or other materials. The friction ring 18 can be arranged to squeeze the blood collection tube after the blood collection tube enters the test tube holder 17, so that the blood collection tube remains stable and vertical, making it easier for the extraction needle 6 to be accurately inserted into the blood collection tube and extract plasma.

[0034] Preferably, a plurality of suction cups 19 are provided at the bottom of the base 1. The arrangement of the plurality of suction cups 19 can firmly adsorb the base 1 on the operating table during use, thereby preventing the base 1 from moving due to accidental contact.

[0035] The working principle and use process of the present invention are as follows: when using the device, first insert the extraction syringe 5 into the card slot 1 4, then insert the upper end of the push rod 8 into the card slot 2 14, then put the blood collection tube after centrifugation into the inside of the test tube holder 17, and at the same time, the friction ring 18 makes the blood collection tube present a vertical state, then start the electric telescopic rod 301, drive the telescopic rod to drive the extraction syringe 5, the detection tube 9, etc. to descend, as the detection tube 9 descends, part of the blood collection tube enters the interior of the detection tube 9, when the sensor 1001 is located at the position where the plasma and blood cells are layered, the sensor 1001 receives the signal and transmits the signal to the microprocessor 1 002. After receiving the signal, the microprocessor 1002 processes the signal and transmits it to the controller 1003. The controller 1003 controls the electric telescopic rod 301 to stop moving. At the same time, the extraction needle 6 enters the blood collection tube and is located above the sensor 1001. Then the motor 16 is started. The motor 16 drives the screw 15 to rotate. The rotating screw 15 drives the slide 13 to slide upward in the slide groove 12 and drives the push rod 8 to move upward. At this time, the push rod 8 drives the piston 7 to form a negative pressure inside the extraction syringe 5, so that the plasma enters the extraction syringe 5. After the plasma is extracted, the extraction syringe 5 can be removed.

[0036] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0037] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only the preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A blood extraction device for a blood cell analyzer, comprising a base (1) and a blood cell analyzer body (2) arranged on the base (1), characterized in that: Also includes; An electric telescopic frame, the electric telescopic frame is located on one side of the blood cell analyzer body (2) and is connected to the base (1), the electric telescopic frame is provided with a plurality of card slots (4), an extraction syringe (5) is detachably installed in the card slot (4), one end of the extraction syringe (5) is provided with an extraction needle (6), the interior of the extraction syringe (5) is sealed and movably connected to a piston (7), the piston (7) is provided with a push rod (8), one end of the push rod (8) extends to the outside of the extraction syringe (5), the electric telescopic frame is provided with a plurality of detection cylinders (9), the plurality of detection cylinders (9) are arranged in a one-to-one correspondence with the positions of the plurality of card slots (4), and when the extraction syringe (5) is installed in the interior of the card slot (4), the extraction syringe (5) is located inside the detection cylinder (9); A detection module is provided, wherein the detection module is used to detect the stratification position between plasma and blood cells, and the detection module comprises a sensor (1001) connected to the bottom of a detection tube (9), a microprocessor (1002) electrically connected to the sensor (1001), and a controller (1003) electrically connected to the microprocessor (1002), wherein the controller (1003) is electrically connected to the electric telescopic frame, and the extraction needle (6) is located above the sensor (1001).

2. A blood extraction device for a blood cell analyzer according to claim 1, characterized in that: The electric telescopic frame comprises two electric telescopic rods (301) connected to a base (1) and a top plate (302) connected to the tops of the two electric telescopic rods (301), a plurality of the card slots (4) are all provided on the top plate (302), and the electric telescopic rods (301) are electrically connected to a controller (1003).

3. A blood extraction device for a blood cell analyzer according to claim 2, characterized in that: The top plate (302) is provided with an extraction frame (11), and the inner walls at both ends of the extraction frame (11) are provided with a slide groove (12), and a slide plate (13) is slidably connected in the slide groove (12), and a plurality of second card slots (14) corresponding to the first card slot (4) are provided on the slide plate (13), and the upper end of the push rod (8) is movably installed in the second card slot (14), and a screw rod (15) is rotatably connected to the top plate (302), and the screw rod (15) passes through the slide plate (13) and extends to the outside of the extraction frame (11), and the screw rod (15) is threadedly connected to the slide plate (13), and the screw rod (15) is rotatably connected to the upper end of the extraction frame (11), and a motor (16) is provided on the extraction frame (11), and the output end of the motor (16) is connected to the screw rod (15).

4. The blood extraction device for a blood cell analyzer according to claim 1, characterized in that: The base (1) is provided with a plurality of test tube holders (17) coaxially arranged with the detection cylinder (9).

5. The blood extraction device for a blood cell analyzer according to claim 4, characterized in that: A friction ring (18) is provided in the test tube holder (17).

6. The blood extraction device for a blood cell analyzer according to claim 1, characterized in that: A plurality of suction cups (19) are provided at the bottom of the base (1).

Images