Blood sampling device for hematology department

Abstract

The invention relates to the technical field of blood sampling equipment, and particularly discloses a blood sampling device for hematology department, which comprises a base assembly, the base assembly comprises a base plate, the top of the base plate is fixedly connected with an elbow frame, a control box and a positioning outer ring in sequence, and a shell assembly is placed on the positioning outer ring. A control cover is fixedly connected to the shell assembly through bolts, the control cover and the shell assembly form a whole, a rotating assembly is installed in the shell assembly and is of a rotatable structure, and a bearing is installed between the rotating assembly and the shell assembly. By arranging the control cover, the shell assembly and the blood collection tube, combination of a mechanical structure and a control system is facilitated, the blood collection difficulty of a nurse in the hematology department is reduced while disposable discards and the control difficulty are not increased, the replacement process of the nurse is omitted, and the blood collection process can be completed only by pressing a plurality of buttons.

Description

Technical Field

[0001] The present invention relates to the technical field of blood sampling equipment, and more particularly to a blood sampling device for hematology. Background Art

[0002] Blood collection is a basic operation in hematology diagnosis and treatment, and its accuracy and efficiency directly affect the reliability of test results and patient experience. Traditional blood collection devices are usually composed of disposable needles, blood collection tubes and auxiliary fixing parts, and medical staff need to manually operate puncture, blood collection and replacement of blood collection tubes. However, a sterile environment must be strictly maintained during the blood collection process. At the same time, multi-tube blood collection (such as blood biochemistry, blood routine and other different test items) requires frequent replacement of blood collection tubes, which puts higher demands on the consistency of operation and sanitary conditions. In addition, the convenience, cost control and waste management of blood collection devices are also the focus of clinical attention.

[0003] At present, blood collection in the hematology department mainly relies on manual operation or semi-automated equipment. Manual blood collection requires nurses to manually puncture the vein, connect the blood collection tubes and replace them one by one. The operation is time-consuming and prone to blood contamination or sample confusion due to human factors. Although existing semi-automated equipment has partially achieved mechanical assistance, it still has significant defects: First, the disposable needle tube design is complex and has too many plastic parts, which not only increases material costs but also leads to the burden of medical waste disposal; second, the replacement of blood collection tubes requires manual intervention, and it is impossible to achieve an automated process for continuous blood collection from multiple tubes, which affects efficiency; third, the existing devices lack an integrated control system, and the operating steps are cumbersome. Nurses need to adjust the equipment many times, which makes it difficult to adapt to high-intensity clinical needs. For example, some equipment uses a fixed blood collection tube holder, and blood collection needs to be suspended when it is replaced, which can easily cause blood reflux or insufficient sample volume. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the blood collection device of the present invention realizes the simplified design of disposable needles, automatic replacement of blood collection tubes and full control of the blood collection process by integrating a rotating component, a locking component and a control system. The synergistic effect of its mechanical structure and electronic control not only reduces the generation of waste, but also ensures the accuracy of blood collection through the information recognition device, significantly improving the automation level and operational convenience of blood collection in the hematology department.

[0005] The present invention provides the following technical solution: a blood sampling device for a hematology department, comprising a base assembly, the base assembly comprising a base plate, the top of the base plate being fixedly connected in sequence to an elbow frame, a control box, and a positioning outer ring, a shell assembly being placed on the positioning outer ring, a control cover being fixedly connected to the shell assembly by bolts, the control cover and the shell assembly forming an integral whole, a rotating assembly being installed inside the shell assembly, the rotating assembly being a rotatable structure, a bearing being installed between the rotating assembly and the shell assembly, a plurality of blood collection tubes being placed inside the rotating assembly, a one-way assembly and a locking assembly being installed inside the rotating assembly on the inner side of the blood collection tubes;

[0006] Furthermore, the control cover includes an upper end cover and an inner control column, an inner control rod is installed inside the upper end cover, an inclined surface is provided at the bottom of the inner control rod, and the inclined surface contacts the radiation push rod. When the inner control rod is pressed, the radiation push rod moves outward, and a protective groove is provided on the top of the upper end cover. The protective groove includes an upper and lower part, the upper part is used to carry the disposable needle tube, and the lower part is used to carry. A Y-shaped push plate is installed on the side of the protective groove, one end of the Y-shaped push plate is installed in the lower part of the protective groove, and the Y-shaped push plate is installed in the double-layer block after rising. A replacement push rod is installed on the top of the double-layer block, and a push rod spring is installed on the Y-shaped push plate.

[0007] Furthermore, a cotton support is placed on the top of the elbow stand, and a venous bandage is installed on the front of the elbow stand. The venous bandage is a detachable structure and can be placed on the bottom of the cotton support after disassembly. A control unit and a motor are installed inside the control box. The motor and the control rod are connected by a belt inside the base plate. The motor drives the rotation of the control rod. A plurality of torque detection grooves are provided on the control rod. The horizontal plate is placed in the torque detection groove. A positioning card is fixedly installed on the inner side of the positioning outer ring. The positioning card corresponds to the positioning groove so that the shell assembly maintains the same angle each time it is installed. A telescopic rod is installed in the positioning outer ring. The telescopic rod is started once when each blood collection tube is used, and one time includes two processes of rising and falling.

[0008] Furthermore, the disposable needle tube includes a needle hose and a needle, the needle hose and the needle are connected by an infusion tube, the needle hose is connected to the negative pressure needle tube, the outer side of the needle hose is fixedly connected to an ear clamp and a bevel groove original plate, the bevel groove original plate plays a blocking and protective role, and the bevel groove original plate is provided with a bevel groove.

[0009] Furthermore, the double-layer block includes a double-layer card block and a buffer spring. The double-layer card block is double-layered, the upper layer bears the pressure of the shift push rod, and the lower layer bears the thrust of the shaped push plate. A card slot for the shaped push plate is opened in the middle of the double-layer card block, and the shift push rod is also double-layered.

[0010] Furthermore, a display screen is installed on the front of the shell assembly, and an external window and a positioning groove are opened on the side of the protective shell. The external window and the internal window cooperate to form an observation window for the user, and the positioning groove and the positioning card cooperate to fix the installation direction of the shell assembly.

[0011] Furthermore, the rotating component includes a rotating inner shell, the outer surface of which is provided with a plurality of inner viewing windows, and an information identification device is installed inside the placement slot of the rotating component, and the information identification device is used to detect whether the patient's blood sampling test items and personal information are correct.

[0012] Furthermore, the one-way component includes a rotating sleeve, the arc surface of which is fixedly mounted with a rotating slide and a horizontal plate, the rotating slide and the horizontal plate have an included angle of 135 degrees, and placement grooves are provided at both ends of the rotating sleeve, and a spiral spring is installed inside the placement grooves.

[0013] Furthermore, the locking assembly includes a mirrored arc plate, a spring and a push rod. Under the action of the spring, the arc plate supports the plastic cover at the transparent vacuum tube.

[0014] Furthermore, the blood collection tube includes a transparent vacuum tube and a plastic cover. The plastic cover is installed on the top of the transparent vacuum tube. A rubber block is installed inside the plastic cover. A rubber pinhole is opened on the top of the rubber block. The transparent vacuum tube is made of transparent material and a patient information label is affixed to the outer surface. The interior of the transparent vacuum tube is a vacuum chamber.

[0015] The technical effects and advantages of the present invention are as follows:

[0016] 1. The present invention is provided with a control cover, a shell assembly, and a blood collection tube, which is conducive to the combination of mechanical structure and control system. Without increasing disposable waste and control difficulty, it reduces the difficulty of blood collection for hematology nurses and eliminates the process of nurse replacement, so that the blood collection process can be completed by pressing a few buttons.

[0017] 2. The present invention is provided with a disposable needle tube, which is conducive to using the inclined groove original plate to fix the disposable needle tube up and down during use without displacement, thereby reducing the exposed area, thereby reducing the discarded part of the disposable needle tube, reducing the use cost and processing difficulty, without changing the existing nurses' operating habits and adding additional learning costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a cross-sectional view of the overall structure of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the base assembly of the present invention.

[0021] Figure 4 It is a schematic structural diagram of the control cover of the present invention.

[0022] Figure 5 Schematic diagram of the double-layer block structure of the present invention.

[0023] Figure 6 It is a schematic structural diagram of the housing assembly of the present invention.

[0024] Figure 7 It is a cross-sectional view of the rotating assembly structure of the present invention.

[0025] Figure 8 It is a schematic diagram of the one-way component structure of the present invention.

[0026] Figure 9 This is a horizontal cross-sectional view of the control cover of the present invention located at the locking assembly.

[0027] Figure 10 Schematic diagram of the blood collection tube structure of the present invention.

[0028] The accompanying drawings are marked as follows: 1. Base assembly; 101. Base plate; 102. Elbow support; 103. Cotton support; 104. Intravenous cuff; 105. Control box; 106. Telescopic rod; 107. Control rod; 108. Positioning block; 109. Positioning outer ring; 2. Control cover; 201. Upper end cover; 202. Inner control column; 203. Inner control rod; 204. Shift push rod; 205. Double-layer block; 2051. Double-layer block; 2052. Buffer spring; 206. Zigzag push plate; 207. Push rod spring; 208. Protective slot; 209. Radiation push rod; 3. Housing assembly; 301. Protective housing; 302 , display screen; 303, external window; 304, positioning slot; 4, blood collection tube; 401, transparent vacuum tube; 402, plastic cover; 403, rubber pinhole; 5, disposable syringe; 501, needle hose; 502, ear splint; 503, inclined groove original plate; 504, negative pressure syringe; 505, needle; 6, one-way component; 601, rotating sleeve; 602, rotating slide plate; 603, horizontal plate; 604, one-way slot; 605, long clamp block; 606, vertical spring; 607, horizontal clamp plate; 7, locking component; 8, rotating component; 801, rotating inner shell; 802, inner window; 803, rotating slot. DETAILED DESCRIPTION

[0029] The technical solutions of the present invention will be described clearly and completely below in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The blood collection device for hematology involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Reference Figure 1-3 The present invention provides a blood collection device for hematology, including a base assembly 1 and a disposable needle tube 5. The base assembly 1 includes a base plate 101. The top of the base plate 101 is fixedly connected to an elbow frame 102, a control box 105 and a positioning outer ring 109 in sequence. A cotton support 103 is placed on the top of the elbow frame 102. A venous bandage 104 is installed on the front of the elbow frame 102. The venous bandage 104 is a detachable structure and can be placed at the bottom of the cotton support 103 after disassembly. A control unit and a motor are installed inside the control box 105. The motor and the control unit are connected. The control rod 107 is connected to the base plate 101 via a belt. The motor drives the rotation of the control rod 107. The control rod 107 is provided with multiple torque detection grooves. The horizontal plate 603 is placed in the torque detection grooves. The inner side of the positioning outer ring 109 is fixedly mounted with a positioning block 108. The positioning block 108 corresponds to the positioning groove 304 so that the housing assembly 3 maintains the same angle during each installation. The positioning outer ring 109 is mounted with a telescopic rod 106. The telescopic rod 106 is activated once for each blood collection tube 4 when it is used, and includes two processes: rising and lowering.

[0031] In this embodiment, it is necessary to specifically explain that: a shell assembly 3 is placed on the positioning outer ring 109, a control cover 2 is fixedly connected to the shell assembly 3 by bolts, the control cover 2 and the shell assembly 3 form a whole, a rotating assembly 8 is installed inside the shell assembly 3, the rotating assembly 8 is a rotatable structure, a bearing is installed between the rotating assembly 8 and the shell assembly 3, a plurality of blood collecting tubes 4 are placed inside the rotating assembly 8, and a one-way assembly 6 and a locking assembly 7 are installed inside the rotating assembly 8 on the inner side of the blood collecting tube 4.

[0032] The main difference between this embodiment and the prior art is that the present embodiment utilizes a combination of mechanical structure and control system, which reduces the difficulty of blood collection for hematology nurses while not increasing disposable waste and control difficulty. It eliminates the need for nurses to replace the blood collection tube 4, allowing them to complete the blood collection process by simply pressing a few buttons. Specifically, the control cover 2, the housing assembly 3, and the blood collection tube 4 are used.

[0033] The above structure is the main structure of this embodiment, which solves the current problem that nurses in the hematology department need to replace the blood collection tube 4 multiple times when drawing blood from patients. It also solves the problem that the current new blood collection device has a large number of disposable needles and tubes that are discarded, resulting in high costs. The control box 105 is an existing structure, and the specific structure and connection method of the motor, belt and control unit inside the control box 105 are not described in detail in this embodiment.

[0034] Reference Figure 2 The disposable needle tube 5 includes a needle hose 501 and a needle 505, which are connected to each other through an infusion tube. The needle hose 501 is communicated with the negative pressure needle tube 504, and the outer side of the needle hose 501 is fixedly connected with an ear clamp 502 and an inclined groove original plate 503. The inclined groove original plate 503 plays a blocking and protective role. An inclined groove is provided on the inclined groove original plate 503, which enables the inclined groove original plate 503 to have an upper and lower fixing effect. When in use, hold the ear clamp 502, press the negative pressure needle tube 504 in the protective groove 208, and rotate the inclined groove original plate 503 when the upper surface of the protective groove 208 contacts the inclined groove original plate 503, so as to achieve the fixation of the disposable needle tube 5 and prevent the disposable needle tube 5 from moving during the blood collection process.

[0035] In this embodiment, it should be specifically explained that the disposable needle tube 5 is a disposable item. Compared with the existing disposable blood collection needle tube, the needle tube used in this application is adapted to the structure of this application without increasing the difficulty of one-time molding of the plastic, and the increased material waste is within the specified range.

[0036] Reference Figure 4 The control cover 2 includes an upper end cover 201 and an inner control column 202. An inner control rod 203 is installed inside the upper end cover 201. The bottom of the inner control rod 203 is provided with an inclined surface, which contacts the radiation push rod 209. When the inner control rod 203 is pressed, the radiation push rod 209 moves outward. A protective groove 208 is provided on the top of the upper end cover 201. The protective groove 208 includes two parts, the upper part is used to carry the disposable needle tube 5, and the lower part is used to carry. A Y-shaped push plate 206 is installed on the side of the protective groove 208, and one end of the Y-shaped push plate 206 is installed in the lower part of the protective groove 208. After rising, the Y-shaped push plate 206 is installed in the double-layer block 205. The top of the double-layer block 205 is provided with a replacement push rod 204, and a push rod spring 207 is installed on the Y-shaped push plate 206.

[0037] In this embodiment, it is necessary to specifically explain that: after the blood collecting tube 4 moves upward, the negative pressure needle tube 504 enters the rubber needle hole 403, and automatic blood collection is completed under the action of the negative pressure in the transparent vacuum tube 401. When the blood collecting tube 4 needs to be replaced, the replacement push rod 204 is pressed, and the replacement push rod 204 pushes the double-layer block 205 downward to move. Since one end of the Z-shaped push plate 206 is stuck inside the double-layer block 205 during the rise, when the double-layer block 205 moves, the Z-shaped push plate 206 detaches from the double-layer block 205 and pushes the blood collecting tube 4 under the action of the push rod spring 207. There is a slight oscillation in the instantaneous movement of the blood collecting tube 4, which shakes the internal blood for the first time to prevent coagulation.

[0038] Reference Figure 5 When the double-layer block 205 moves, the shaped push plate 206 detaches from the double-layer block 205 and pushes the blood collection tube 4 downward instantly under the action of the push rod spring 207.

[0039] In this embodiment, it should be specifically explained that the switching push rod 204 is also double-layered, which ensures that the switching push rod 204 will not move downward excessively, and protects the relative movement relationship between the switching push rod 204 and the double-layer block 205.

[0040] Reference Figure 6 A display screen 302 is installed on the front of the shell component 3, and an external window 303 and a positioning groove 304 are opened on the side of the protective shell 301. The external window 303 and the internal window 802 cooperate to form an observation window for the user, and the positioning groove 304 cooperates with the positioning card block 108 to fix the installation direction of the shell component 3.

[0041] In this embodiment, it should be specifically explained that the display screen 302 is used to display patient information for proofreading.

[0042] Reference Figure 7 The rotating assembly 8 includes a rotating inner shell 801. The outer surface of the rotating inner shell 801 is provided with multiple inner windows 802. The medical staff observes the blood collection status of the blood collection tube 4 through the inner windows 802. The interior of the rotating inner shell 801 is provided with multiple placement slots.

[0043] In this embodiment, it should be specifically explained that an information recognition device is installed inside the placement slot of the rotating component 8, and the information recognition device is used to detect whether the patient's blood sampling test items and personal information are correct.

[0044] Reference Figure 8 The one-way component 6 includes a rotating sleeve 601, and a rotating slide 602 and a horizontal plate 603 are fixedly installed on the arc surface of the rotating sleeve 601. The rotating slide 602 and the horizontal plate 603 have an angle of 135 degrees. A placement groove is provided at both ends of the rotating sleeve 601, and a spiral spring is installed inside the placement groove. The spiral spring exerts an outward rotation force on the one-way component 6. A one-way groove 604 is provided on the rotating sleeve 601, and a long clamping block 605 is installed inside the one-way groove 604, so that the rotating sleeve 601 has a one-way rotation capability. While rotating, it can increase the potential energy of the spiral spring. The long clamping block A horizontal card plate 607 is hinged at the bottom of 605. A vertical spring 606 is installed at the bottom of the back of the long card block 605, and a semicircular card block is installed on the top of the horizontal card plate 607. The semicircular card block is installed inside the rotating groove 803. When the plastic cover 402 is installed inside the rotating assembly 8, the plastic cover 402 contacts the rotating slide 602 and rotates it, so that the horizontal plate 603 on the other side becomes horizontal. When the shell assembly 3 is placed on the base assembly 1, the horizontal plate 603 enters the control rod 107, which detects the position of the blood collection tube 4 while providing torque transmission.

[0045] In this embodiment, it should be specifically explained that: after the plastic cover 402 rises, although the diameter of the transparent vacuum tube 401 is shorter, the one-way component 6 still does not rotate in the opposite direction under the action of the one-way groove 604. At this time, due to the presence of the horizontal clamping plate 607, the rising of the plastic cover 402 will cause the horizontal clamping plate 607 to rotate, and will not cause the long clamping block 605 to move. When it descends, the installation method of the semicircular clamping block on the horizontal clamping plate 607 makes it possible for the horizontal clamping plate 607 to only rotate forward and cannot directly rotate in the opposite direction. It must move downward to enable the horizontal clamping plate 607 to rotate. This descending process causes the top of the long clamping block 605 to disengage from the one-way groove 604, and the one-way component 6 rotates under the action of the spiral spring, and retracts the horizontal plate 603.

[0046] To briefly summarize the above content, when the plastic cover 402 rises, the top will first contact the horizontal card plate 607 to rotate it, and the height remains unchanged. Then the plastic cover 402 contacts the rotating slide 602 to rotate the horizontal plate 603 to the horizontal. The horizontal plate 603 provides torque while providing a detection position. When the plastic cover 402 descends, it directly passes over the rotating slide 602, and the bottom contacts the horizontal card plate 607, causing the horizontal card plate 607 to move downward a distance and then rotate. During the movement, the one-way component 6 can rotate in the opposite direction to retract the horizontal plate 603. The rotation makes the horizontal card plate 607 not affect the normal exit of the plastic cover 402.

[0047] Reference Figure 9 The locking assembly 7 includes a mirrored arc plate, a spring and a push rod. The arc plate supports the plastic cover 402 at the transparent vacuum tube 401 under the action of the spring. In the release stage, the push rod compresses the spring after being pushed by the radiation push rod 209, so that the blood collection tube 4 is separated from the fixation of the locking assembly 7 and withdraws from the inside of the rotating assembly 8 under the action of gravity.

[0048] In this embodiment, it should be specifically explained that: since the locking assembly 7 always blocks the movement of the plastic cover 402, the inner control rod 203 needs to be pressed to keep the locking assembly 7 in a compressed state when loading and unloading the blood collection tube 4.

[0049] Reference Figure 10 The blood collection tube 4 includes a transparent vacuum tube 401 and a plastic cover 402. The plastic cover 402 is installed on the top of the transparent vacuum tube 401. A rubber block is installed inside the plastic cover 402. A rubber pinhole 403 is opened on the top of the rubber block. The transparent vacuum tube 401 is made of transparent material and a patient information label is affixed to the outer surface.

[0050] In this embodiment, it should be specifically explained that the interior of the transparent vacuum tube 401 is a vacuum cavity, and the method for forming the vacuum cavity belongs to the existing technology and will not be elaborated in detail in this application.

[0051] The main problem solved by this embodiment is: by combining the mechanical structure with the control system, the difficulty of blood collection for nurses in the hematology department is reduced without increasing the disposable waste and the control difficulty, and the process of nurses replacing the blood collection tube 4 is eliminated, so that the blood collection process can be completed by pressing a few buttons. This solves the current problem in the hematology department that nurses need to replace the blood collection tube 4 multiple times when drawing blood from multiple tubes. At the same time, it solves the problem that the current new blood collection device has a large number of disposable syringes and tubes that are discarded, resulting in high costs.

[0052] A blood sampling method for hematology, comprising the following specific steps:

[0053] During the preparation process, the control cover 2 and the outer shell assembly 3 are turned upside down, the inner control rod 203 is pressed, and the blood collection tube 4 with the patient information is placed in the rotating inner shell 801. Under the action of gravity, the rubber pinhole 403 enters the top of the rotating inner shell 801. The inner control rod 203 is released, and the outer shell assembly 3 is returned to the center. At this time, the display screen 302 displays the blood donor information. The locking assembly 7 automatically secures the blood collection tube 4. Finally, the outer shell assembly 3 is placed in the positioning outer ring 109. When placing, the left positioning block 108 is aligned with the positioning groove 304.

[0054] During the blood collection process, the patient's elbow is placed on the cotton support 103, and the patient's vein is tied with the venous bandage 104. Pressure is applied and the needle 505 is inserted into the patient's vein. The blood pressure causes the blood to flow into the needle 505, but the pressure is too low to flow out of the negative pressure needle tube 504. At this time, the ear splint 502 is held and the negative pressure needle tube 504 is inserted into the protective groove 208. The original plate 503 of the inclined groove is rotated to fix it so that the disposable needle tube 5 cannot move up and down as a whole. Since a pressure sensor is installed inside the protective groove 208, the pressure sensor transmits a signal to the control box 105 to control the telescopic rod 106 to extend once. This process causes the blood collection tube 4 to move upward, and the negative pressure needle tube 504 enters the rubber needle hole 403. Under the action of the negative pressure in the transparent vacuum tube 401, automatic blood collection is completed;

[0055] During the replacement of the blood collection tube 4, the nurse observes the blood collection status through the outer window 303 and the inner window 802. When the blood collection tube 4 needs to be replaced, the replacement push rod 204 is pressed, and the replacement push rod 204 pushes the double-layer block 205 downward to move. Since one end of the zigzag push plate 206 is stuck inside the double-layer block 205 when it rises, when the double-layer block 205 moves, the zigzag push plate 206 is separated from the double-layer block 205 and, under the action of the push rod spring 207, pushes the blood collection tube 4 to move downward instantaneously and falls on the locking assembly 7. There is a slight vibration in this process, which shakes the blood inside for the first time to prevent clotting. At the same time, the motor in the control box 105 controls the control rod 107 to rotate to complete the replacement of the blood collection tube 4, and the above process is repeated;

[0056] After completing blood collection, the nurse loosens the venous bandage 104, removes the needle 505 from the patient, rotates the ear splint 502, removes the negative pressure needle tube 504 and discards it, thus completing blood collection. The nurse then takes out the outer shell assembly 3 and shakes it. At this time, the blood inside has completed the anti-coagulation treatment. The inner control rod 203 is pressed, and the radial push rod 209 pushes the locking assembly 7 outward under the action of the inner control rod 203. The blood collection tube 4 falls under the action of gravity after losing the support of the locking assembly 7. At this time, all the blood collection tubes 4 are withdrawn and can be placed on the blood vessel rack.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blood collection device for hematology, comprising a base assembly (1) and a disposable needle tube (5), characterized in that: The base assembly (1) comprises a base plate (101), the top of the base plate (101) is fixedly connected with an elbow frame (102), a control box (105) and a positioning outer ring (109) in sequence, a housing assembly (3) is placed on the positioning outer ring (109), a control cover (2) is fixedly connected to the housing assembly (3) by bolts, the control cover (2) and the housing assembly (3) form a whole, a rotating assembly (8) is installed inside the housing assembly (3), the rotating assembly (8) is a rotatable structure, a bearing is installed between the rotating assembly (8) and the housing assembly (3), a plurality of blood collection tubes (4) are placed inside the rotating assembly (8), and a one-way assembly (6) and a locking assembly (7) are installed inside the rotating assembly (8) on the inner side of the blood collection tubes (4); The control cover (2) comprises an upper end cover (201) and an inner control column (202). An inner control rod (203) is installed inside the upper end cover (201). The bottom of the inner control rod (203) is provided with an inclined surface, which contacts the radiation push rod (209). When the inner control rod (203) is pressed, the radiation push rod (209) moves outward. A protective groove (208) is provided on the top of the upper end cover (201). The protective groove (208) comprises an upper and a lower part. The upper part is used to carry the disposable needle tube (5), and the lower part is used to carry. A shaped push plate (206) is installed on the side of the protective groove (208), one end of the shaped push plate (206) is installed in the lower part of the protective groove (208), and the shaped push plate (206) is installed in the double-layer block (205) after rising. A replacement push rod (204) is installed on the top of the double-layer block (205), and a push rod spring (207) is installed on the shaped push plate (206).

2. A blood sampling device for hematology according to claim 1, characterized in that: A cotton support (103) is placed on the top of the elbow support (102), and a venous bandage (104) is installed on the front of the elbow support (102). The venous bandage (104) is a detachable structure and can be placed on the bottom of the cotton support (103) after being disassembled. A control unit and a motor are installed inside the control box (105). The motor and the control rod (107) are connected by a belt inside the base plate (101). The motor drives the rotation of the control rod (107). The control rod (107) is opened. A plurality of torque detection grooves are provided, and the horizontal plate (603) is placed in the torque detection grooves when it is horizontal. A positioning block (108) is fixedly installed on the inner side of the positioning outer ring (109). The positioning block (108) corresponds to the positioning groove (304) so that the housing component (3) maintains the same angle each time it is installed. A telescopic rod (106) is installed in the positioning outer ring (109). The telescopic rod (106) is activated once when each blood collection tube (4) is used, and one operation includes two processes: rising and falling.

3. A blood sampling device for hematology according to claim 1, characterized in that: The disposable needle tube (5) comprises a needle hose (501) and a needle (505), wherein the needle hose (501) and the needle (505) are connected via an infusion tube, and the needle hose (501) is communicated with a negative pressure needle tube (504). An ear clamping plate (502) and an oblique groove original plate (503) are fixedly connected to the outer side of the needle hose (501), and the oblique groove original plate (503) plays a blocking and protective role. The oblique groove original plate (503) is provided with an oblique groove.

4. A blood sampling device for hematology according to claim 1, characterized in that: The double-layer block (205) includes a double-layer clamping block (2051) and a buffer spring (2052). The double-layer clamping block (2051) is double-layered, the upper layer bears the pressure of the switching push rod (204), and the lower layer bears the thrust of the shaped push plate (206). A clamping groove for the shaped push plate (206) is provided in the middle of the double-layer clamping block (2051), and the switching push rod (204) is also double-layered.

5. The blood sampling device for hematology according to claim 1, characterized in that: A display screen (302) is installed on the front of the housing assembly (3), and an external viewing window (303) and a positioning groove (304) are provided on the side of the protective housing (301). The external viewing window (303) cooperates with the internal viewing window (802) to form an observation window for the user, and the positioning groove (304) cooperates with the positioning block (108) to fix the installation direction of the housing assembly (3).

6. The blood sampling device for hematology according to claim 1, characterized in that: The rotating assembly (8) comprises a rotating inner shell (801), the outer surface of the rotating inner shell (801) is provided with a plurality of inner viewing windows (802), and an information recognition device is installed inside the placement slot of the rotating assembly (8), the information recognition device being used to detect whether the patient's blood sampling test items and personal information are correct.

7. The blood sampling device for hematology according to claim 1, characterized in that: The one-way component (6) comprises a rotating sleeve (601), a rotating slide plate (602) and a horizontal plate (603) being fixedly mounted on the arc surface of the rotating sleeve (601), the rotating slide plate (602) and the horizontal plate (603) having an included angle of (135) degrees, and placement grooves being provided at both ends of the rotating sleeve (601), wherein a spiral spring is mounted inside the placement grooves.

8. The blood sampling device for hematology according to claim 1, characterized in that: The locking assembly (7) comprises a mirrored arc plate, a spring and a push rod. Under the action of the spring, the arc plate supports the plastic cover (402) at the transparent vacuum tube (401).

9. The blood sampling device for hematology according to claim 1, characterized in that: The blood collection tube (4) comprises a transparent vacuum tube (401) and a plastic cover (402). The plastic cover (402) is mounted on the top of the transparent vacuum tube (401). A rubber block is mounted inside the plastic cover (402). A rubber pinhole (403) is provided on the top of the rubber block. The transparent vacuum tube (401) is made of a transparent material and has a patient information label attached to its outer surface. The interior of the transparent vacuum tube (401) is a vacuum chamber.

Images