A blood collection device having a blood backflow prevention

Abstract

The application discloses a blood sampling device with blood backflow prevention function, and relates to the technical field of blood sampling.The blood sampling device comprises a lifting device, a control device and a protection device, wherein the fixing device comprises a fixing frame and a plush pad; the fixing frame is a long rectangular frame structure with both sides being permeable; the placing device comprises a placing rack, a fixing plate, a spring, a semicircular plate, a moving frame, a connecting shaft and a rotating wheel; and the blood sampling device comprises a fixing rack, a blood extractor and a pulling rod.The blood sampling device with blood backflow prevention function is characterized in that the ring finger passes through the fixing frame and the placing rack, the moving assembly and the rotating assembly support and fix the finger end, the needle hole penetrates the finger pulp to extract blood, and the blood is transferred into the collecting tube through the shunt hose.Compared with the traditional blood sampling device, the blood extractor is in a negative pressure state, the blood does not contact with air, the patient can avoid directly watching the blood sampling process, and the comfort of the patient is improved.

Description

Technical Field

[0001] This invention relates to the field of blood collection technology, and in particular to a blood collection device that prevents blood backflow. Background Technology

[0002] Hematology is a branch of internal medicine that primarily treats problems related to the hematopoietic system. Hematology departments also provide specialized services for many non-hematological hematological issues and conduct various technical tests. The most common function in hematology is blood testing.

[0003] Current finger-prick blood collection methods involve collecting blood directly from the blood collection tube and collection tube due to the small amount of blood drawn. This operation can easily expose the blood to air, potentially leading to bacteria entering the bloodstream. Furthermore, the blood collection tube must be under negative pressure to prevent blood backflow, which can cause negative emotions, especially for people who are prone to fainting at the sight of blood. Therefore, a blood collection device designed to prevent blood backflow was developed to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a blood collection device that prevents blood backflow, overcoming the shortcomings of the prior art. It protects and fixes the fingertip area through a moving component and a sliding component, and the drawn blood enters the storage tube through a diversion tube for collection. It has the characteristics of strong practicality, high working efficiency and good stability.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] A blood collection device that prevents blood backflow, including

[0007] The fixing device includes a fixing frame and a plush pad. The fixing frame is a cuboid frame structure with open sides, and the lower surface of the plush pad is connected to the lower inner surface of the fixing frame.

[0008] A placement device includes a moving assembly consisting of a placement frame, a fixed plate, a spring, a semicircular plate, a moving frame, a connecting shaft, and a rotating wheel. One side surface of the placement frame is connected to one side surface of the fixed frame, the upper surface of the fixed plate is connected to the lower surface of the placement frame, one end of the spring is connected to one side surface of the fixed plate, the other end of the spring is connected to one side surface of the semicircular plate, the upper surface of the semicircular plate is connected to the lower surface of the moving frame, the placement frame has moving grooves at both ends, the moving frame has four elongated grooves at both ends, the connecting shaft has both ends connected to the inner two sides of the elongated grooves of the moving frame, one side surface of the rotating wheel is connected to one side surface of the connecting shaft, and one side surface of the rotating wheel is connected to one side surface of the moving groove of the placement frame.

[0009] A blood collection device includes a fixed frame, a blood collector, and a pull rod. The lower end of the fixed frame is connected to the upper surface of the placement frame. A circular hole is provided in the middle of the fixed frame. One side surface of the blood collector is connected to one side surface inside the circular hole of the fixed frame. The lower end of the pull rod is connected to one side surface inside the blood collector.

[0010] Furthermore, the fixing device also includes a base plate, a support column, and a fixing bolt. The lower surface of the support column is connected to the upper surface of the base plate, the upper surface of the support column is connected to the lower surface of the fixing frame, and the fixing bolt is located in the middle of the plush pad. The lower surface of the fixing bolt passes through the lower surface inside the fixing frame and connects to the upper surface of the support column.

[0011] Furthermore, the fixing device also includes a placement tray, the lower surface of which is connected to the upper surface of the fixing frame.

[0012] Furthermore, the fixing device also includes a turntable, a lead screw, and a limiting plate. One end of the turntable is connected to one side surface of the lead screw, and the other end of the lead screw passes through one side surface of the placement frame and is connected to one side surface of the limiting plate.

[0013] Furthermore, a threaded tube is provided on one side surface of the placement frame through which the lead screw passes.

[0014] Furthermore, the placement device also includes a support plate, a fixing member, and an application frame. The lower surface of the support plate is connected to the upper surface of the placement frame, the lower surface of the fixing member passes through the upper surface of the support plate and is connected to the upper surface of the placement frame, and the lower surface of the application frame is connected to the upper surface of the support plate.

[0015] Furthermore, the blood collection device also includes a connector, a blood collection tubing, and a needle. The upper end of the blood collection tubing is connected to the lower end of the blood collector through one side surface of the connector, and the lower end of the blood collection tubing is connected to the upper end of the needle through one side surface of another connector.

[0016] Furthermore, the blood collection device also includes a shunt tube, a blood collection tube, and a support frame. The upper end of the shunt tube is connected to one side surface through a blood drawing tube connector. The lower end of the shunt tube is connected to the upper end of the blood collection tube. One side surface of the support frame is connected to one side surface of the placement rack. The inner side surface of the support frame is connected to one side surface of the blood collection tube.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention features a fixed frame secured with bolts, surrounded by plush pads on all sides, which maintains stability during interdigital blood draws, facilitating the process and providing greater comfort.

[0019] This invention uses a moving component and a rotating component to fix the fingertip, making blood drawing easier.

[0020] This invention uses a fixing frame to secure the blood drawer, creating a negative pressure inside the blood drawer. Blood is collected through a shunt tube into a blood storage tube, which is quite convenient.

[0021] This invention is characterized by its strong practicality, high work efficiency, and good stability. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall external structure of a blood collection device designed to prevent blood backflow;

[0023] Figure 2 A schematic diagram of a fixing device for a blood collection device that prevents blood backflow;

[0024] Figure 3 A schematic diagram of a device for placing a blood collection device to prevent blood backflow;

[0025] Figure 4 This is a schematic diagram of a blood collection device with a mechanism to prevent blood backflow.

[0026] Figure 5 A schematic diagram of a movable component structure for a blood collection device with a fixing device to prevent blood backflow;

[0027] Figure 6 A first-view structural schematic diagram of a fixing device for a blood collection device that prevents blood backflow;

[0028] Figure 7 A blood collection device that prevents blood backflow Figure 4 Schematic diagram of the structure at point A in the middle;

[0029] Figure 8 A blood collection device that prevents blood backflow Figure 5 Schematic diagram of the structure at point B;

[0030] In the diagram: 1. Fixing device; 101. Base plate; 102. Support column; 103. Fixing frame; 104. Placement tray; 105. Plush pad; 106. Fixing bolt; 2. Placement device; 201. Placement rack; 202. Fixing plate; 203. Spring; 204. Semicircular plate; 205. Moving frame; 206. Connecting shaft; 207. Rotating wheel; 208. Turntable; 209. Lead screw; 210. Limiting plate; 211. Support plate; 212. Fixing component; 213. Smearing frame; 3. Blood collection device; 301. Fixing frame; 302. Blood drawer; 303. Pull rod; 304. Connecting component; 305. Blood drawing tubing; 306. Needle; 307. Diversion tubing; 308. Blood collection tube; 309. Support frame. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Please refer to Figure 1 As shown in Figure 8, this invention is a blood collection device that prevents blood backflow, comprising:

[0035] The fixing device 1 includes a fixing frame 103 and a plush pad 105. The fixing frame 103 is a cuboid frame structure with open sides. The lower surface of the plush pad 105 is connected to the lower inner surface of the fixing frame 103.

[0036] The placement device 2 includes a moving assembly consisting of a placement frame 201, a fixed plate 202, a spring 203, a semi-circular plate 204, a moving frame 205, a connecting shaft 206, and a rotating wheel 207. One side surface of the placement frame 201 is connected to one side surface of the fixed frame 203, the upper surface of the fixed plate 202 is connected to the lower surface of the placement frame 201, one end of the spring 203 is connected to one side surface of the fixed plate 202, and the other end of the spring 203 is connected to one side surface of the semi-circular plate 204. The upper surface of the semi-circular plate 204 is connected to the lower surface of the moving frame 205. The placement frame 201 has moving grooves at both ends, and the moving frame 205 has four long grooves at both ends. The two ends of the connecting shaft 206 are connected to the inner two sides of the long grooves of the moving frame 205. One side surface of the rotating wheel 207 is connected to one side surface of the connecting shaft 206, and one side surface of the rotating wheel 207 is connected to one side surface of the moving groove of the placement frame 201.

[0037] The blood collection device 3 includes a fixed frame 301, a blood collector 302, and a pulling rod 303. The lower end of the fixed frame 301 is connected to the upper surface of the placement frame 201. A circular hole is provided in the middle of the fixed frame 301. One side surface of the blood collector 302 is connected to one side surface inside the circular hole of the fixed frame 301. The lower end of the pulling rod 303 is connected to one side surface inside the blood collector 302.

[0038] During use, the patient inserts their ring finger through the fixing frame 103, and the fingertip is disinfected with alcohol by medical staff under the smear frame 213. Depending on the length of the patient's finger, the moving component is pushed, and then the turntable 208 is rotated. The screw 209 drives the limiting plate 210 to fix the patient's fingertip. Medical staff remove the new tubing and blood collection tube 308, and draw blood from the patient's fingertip by pulling the pull rod 303 inside the blood drawer 302. The blood enters the blood collection tube 308 through the diversion tubing 307, avoiding direct contact between the blood and air, and also avoiding the patient's direct view of the blood drawing process, thus increasing safety and patient comfort.

[0039] The fixing device 1 also includes a base plate 101, a support column 102, and a fixing bolt 106. Materials that need to be used can be placed on the base plate 101. The lower surface of the support column 102 is connected to the upper surface of the base plate 101 to provide support. The upper surface of the support column 102 is connected to the lower surface of the fixing frame 103. The fixing bolt 106 is located in the middle of the plush pad 105. The lower surface of the fixing bolt 106 passes through the lower surface inside the fixing frame 103 and is connected to the upper surface of the support column 102. It can be rotated when needed for easy use.

[0040] The fixing device 1 also includes a placement tray 104, the lower surface of which is connected to the upper surface of the fixing frame 103, which can hold small items or display boards.

[0041] The fixing device 1 also includes a turntable 208, a lead screw 209, and a limiting plate 210. One end of the turntable 208 is connected to one side surface of the lead screw 209, and the other end of the lead screw 209 passes through one side surface of the placement frame 201 and is connected to one side surface of the limiting plate 210. The rotation of the turntable 208 drives the rotation of the lead screw 209, which moves the position of the limiting plate 210 to fix the patient's fingertip.

[0042] The lead screw 209 passes through a threaded tube on one side of the placement rack 201, and the lead screw 209 rotates inside the threaded tube.

[0043] The placement device 2 also includes a support plate 211, a fixing member 212, and an application frame 213. The lower surface of the support plate 211 is connected to the upper surface of the placement rack 201. The lower surface of the fixing member 212 passes through the upper surface of the support plate 211 and is connected to the upper surface of the placement rack 201. The lower surface of the application frame 213 is connected to the upper surface of the support plate 211. The fingertip is used for alcohol disinfection under the application frame 213.

[0044] The blood collection device 3 also includes a connector 304, a blood collection tube 305, and a needle 306. The upper end of the blood collection tube 305 is connected to the lower end of the blood collector 302 through one side surface of the connector 304. The lower end of the blood collection tube 305 is connected to the upper end of the needle 306 through one side surface of another connector 304. The tubes are connected to each other, and the tubes are connected to the needle 306 and the blood collector 302 through the connector 304.

[0045] The blood collection device 3 also includes a shunt tube 307, a blood collection tube 308, and a support frame 309. The upper end of the shunt tube 307 is connected to one side surface through the blood drawing tube 305 connector 304. The lower end of the shunt tube 307 is connected to the upper end of the blood collection tube 308. One side surface of the support frame 309 is connected to one side surface of the placement rack 201, providing support for the blood collection tube 308. One side surface inside the support frame 309 is connected to one side surface of the blood collection tube 308. After blood is drawn out, it enters the blood collection tube 308 through the shunt tube 307, facilitating transfer.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A blood collection device that prevents blood backflow, characterized in that: include The fixing device (1) includes a fixing frame (103) and a plush pad (105). The fixing frame (103) is a cuboid frame structure with open sides. The lower surface of the plush pad (105) is connected to the lower surface of the interior of the fixing frame (103). The placement device (2) includes a moving assembly consisting of a placement frame (201), a fixed plate (202), a spring (203), a semi-circular plate (204), a moving frame (205), a connecting shaft (206), and a rotating wheel (207). One side surface of the placement frame (201) is connected to one side surface of the fixed frame (103), the upper surface of the fixed plate (202) is connected to the lower surface of the placement frame (201), one end of the spring (203) is connected to one side surface of the fixed plate (202), and the other end of the spring (203) is connected to the other side surface of the fixed plate (202). The end is connected to one side surface of the semicircular plate (204), the upper surface of the semicircular plate (204) is connected to the lower surface of the moving frame (205), the two ends of the placement rack (201) are provided with moving grooves, the two ends of the moving frame (205) are provided with four long grooves, the two ends of the connecting shaft (206) are connected to the two sides of the inner surface of the long groove of the moving frame (205), one side surface of the rotating wheel (207) is connected to one side surface of the connecting shaft (206), and the other side surface of the rotating wheel (207) is connected to one side surface of the inner surface of the moving groove; The blood collection device (3) includes a fixed frame (301), a blood drawer (302), and a pull rod (303). The lower end of the fixed frame (301) is connected to the upper surface of the placement frame (201). A circular hole is provided in the middle of the fixed frame (301). The outer surface of the blood drawer (302) is connected to the inner surface of the circular hole. The lower end of the pull rod (303) is connected to the inner surface of the blood drawer (302). The fixing device (1) also includes a base plate (101), a support column (102) and a fixing bolt (106). The lower surface of the support column (102) is connected to the upper surface of the base plate (101), and the upper surface of the support column (102) is connected to the lower outer surface of the fixing frame (103). The fixing bolt (106) is located in the middle of the plush pad (105), and the lower surface of the fixing bolt (106) passes through the lower inner surface of the fixing frame (103) and is connected to the upper surface of the support column (102). The fixing device (1) also includes a placement tray (104), the lower surface of which is connected to the upper surface of the fixing frame (103); The fixing device (1) also includes a turntable (208), a lead screw (209) and a limiting plate (210). One end of the turntable (208) is connected to one end of the lead screw (209), and the other end of the lead screw (209) passes through one side surface of the placement frame (201) and is connected to one side surface of the limiting plate (210). The screw (209) passes through a threaded tube on one side of the placement rack (201); The placement device (2) further includes a support plate (211), a fixing member (212), and an application frame (213). The lower surface of the support plate (211) is connected to the upper surface of the placement frame (201). The lower surface of the fixing member (212) passes through the lower surface of the support plate (211) and is connected to the upper surface of the placement frame (201). The lower surface of the application frame (213) is connected to the upper surface of the support plate (211). The blood collection device (3) further includes a connector (304), a blood collection tubing (305), and a needle (306). The upper end of the blood collection tubing (305) is connected to the lower end of the blood collector (302) through a first connector (304), and the lower end of the blood collection tubing (305) is connected to the upper end of the needle (306) through a second connector (304). The blood collection device (3) further includes a shunt hose (307), a blood collection tube (308), and a support frame (309). The upper end of the shunt hose (307) is connected to the blood collection hose (305) through a third connector (304). The lower end of the shunt hose (307) is connected to the upper end of the blood collection tube (308). One side surface of the support frame (309) is connected to one side surface of the placement rack (201). The inner surface of the support frame (309) is connected to the lower end of the blood collection tube (308).

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