A blood concentration examination indwelling needle blood drawing auxiliary device

Abstract

The utility model discloses a blood medicine concentration checks and uses and stays needle blood drawing auxiliary device relates to medical instrument technical field, including middle part, side and butt joint, when using, through the lower interface and the indwelling needle of patient's body connection, through the first side of not having the side of liquid discharge component and carries out the extraction residual liquid work, until the blood just enters the side cylinder of the first side, the side handle of the first side side is reversed, and the side of the second side that is equipped with the liquid discharge component is controlled and carries out the extraction blood to be detected, and the operation mode is same with the side of the first side, and the blood of the side cylinder in the side of the second side is extracted through the injection cylinder column head and the cooperation of existing blood collection tube, when the blood work of the side of the second side, the valve hole of valve ball is not communicated through the rotation handle control, opens the buckle cap when discharging blood, and rotates the valve ball to make the valve hole and the lateral pipe and injection cylinder column head intercommunication, before the blood work, control the middle handle and make the middle taper block away from the taper cavity, make the physiological saline in the main cylinder and the connecting seat intercommunication, carry out the operation of sealing tube.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an indwelling needle blood-drawing auxiliary device for blood drug concentration testing. Background Technology

[0002] Plasma concentration refers to the total concentration of a drug in the blood plasma after absorption, including drugs bound to plasma proteins or free in the plasma, and also broadly refers to the concentration of a drug in whole blood. The intensity of a drug's effect is directly proportional to its concentration in the plasma, and the concentration of a drug in the body changes over time.

[0003] In summary, the current procedure for using indwelling needles to check blood drug concentration presents the following technical problems: Since blood drug concentration is a dynamic value that changes over time within the patient's body, and it is positively correlated with the treatment effect, blood needs to be drawn at fixed intervals for testing in clinical practice to determine the patient's blood drug concentration. However, this repeated blood drawing process is cumbersome and requires adherence to hygiene standards and correct operating procedures. Specifically, the procedure involves first using a first syringe to draw out any residual blood from the indwelling needle to prevent clotting and thrombosis; then using a second syringe to draw the blood to be tested; and finally, using a third syringe with accompanying saline solution to seal the catheter. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides an auxiliary device for blood drawing with an indwelling needle for blood drug concentration testing.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] A blood-drawing auxiliary device for indwelling needles used for blood drug concentration testing includes a central section, side sections, and a docking section. The side sections are provided in two sets, which are located on both sides of the central section. The central section includes a main cylinder and a central flow-limiting component. The side sections include a side cylinder and a side flow-limiting component. The docking section includes a lower interface and a drainage component. A central limiting component is provided on the lower side of the main cylinder. A lower interface is provided on the lower side of the central limiting component. A side flow-limiting component is provided on the lower side of the side cylinder. Two side limiting components are located between the central limiting component and the lower interface. A drainage component is connected to one of the side flow-limiting components.

[0007] Furthermore, the intermediate current limiting component includes a connecting seat, an intermediate membrane, an intermediate plate, an intermediate cone block, an intermediate seat, an intermediate handle, an intermediate limiting plate, and an intermediate screw. The connecting seat is fixedly connected to the lower side of the main cylinder, and the connecting seat is fixedly connected to the lower interface. The connecting seat has a conical cavity on its upper side, and the connecting seat has an open structure on the upper side of the conical cavity. The intermediate membrane is fixedly connected to the open structure of the connecting seat. The intermediate membrane is fixedly connected to the connecting seat and the main cylinder. The intermediate cone block corresponding to the cone cavity is slidably connected inside the cone cavity. The intermediate plate is fixedly connected to the intermediate cone block, and the intermediate plate passes through the intermediate membrane. The intermediate plate is fixedly connected to the intermediate membrane.

[0008] Furthermore, a middle seat is fixedly connected to the main cylinder near the middle membrane, a middle handle is rotatably connected to the middle seat, a middle screw is provided on the lower side of the middle handle, and the middle screw is threadedly connected to the middle plate.

[0009] Furthermore, a middle limiting plate is fixedly connected to the middle handle within the middle seat, and the middle limiting plate is rotatably connected within the middle seat.

[0010] Furthermore, the side limiting assembly includes a side cylinder, a connecting cylinder, a conical cylinder, a side membrane, a side plate, a side conical column, a side seat, a side handle, a side limiting plate, and a side screw. The connecting cylinder is fixedly connected to the lower side of the side cylinder, and the conical cylinder is fixedly connected to the side of the connecting cylinder near the main cylinder. The connecting seat has two side holes on the lower side of the conical cavity, and the conical cylinder is fixedly connected to the side holes of the connecting seat. The side conical column is slidably connected inside the conical cylinder, and the side plate is fixedly connected to the side conical column inside the connecting cylinder. The side membrane is fixedly connected to the lower side of the connecting cylinder, and the side plate passes through the side membrane and is fixedly connected to the side membrane.

[0011] Furthermore, a side seat is fixedly connected to one side of the connecting cylinder, and a side handle is rotatably connected to the side seat. A side screw is provided on the side handle near the side plate, and the side screw is threadedly connected to the side plate.

[0012] Furthermore, a side limiting plate is fixedly connected to the side handle within the side seat, and the side limiting plate is rotatably connected within the side seat.

[0013] Furthermore, the drainage assembly includes a valve housing, a side tube, a syringe head, a handle, a valve ball, a valve hole, and a cap. A side tube is fixedly connected to one of the side tubes, a valve housing is fixedly connected to the middle of the side tube, a valve ball is rotatably connected inside the valve housing, a valve hole is opened in the middle of the valve ball, a handle is fixedly connected to the valve ball, and the handle extends out of the valve housing.

[0014] Furthermore, an injection cylinder head is fixedly connected to the side of the side tube away from the side cylinder, and a cap is snapped onto the injection cylinder head.

[0015] Furthermore, a rib is fixedly connected between the side cylinder and the main cylinder.

[0016] Furthermore, the middle membrane and side membrane are configured as wrinkled, low-compliance membranes.

[0017] Furthermore, the main cylinder is filled with saline solution; the main cylinder is pre-filled with saline solution by default before use, so that medical staff can use it directly after opening the packaging.

[0018] The beneficial effects of this utility model are:

[0019] A blood collection auxiliary device for indwelling needles used for blood drug concentration testing is disclosed. In use, it connects to the indwelling needle on the patient via the lower interface. Residual fluid is drawn from the first side (without a drainage component). Rotating the side handle moves the side cone away from the cone cylinder, creating a gap between the side cone and the cone cylinder. Pulling the push rod inside the side cylinder initiates the drawing process until blood just enters the first side cylinder. Then, the side handle on the first side is reversed to draw blood from the second side (with a drainage component), operating in the same manner as the first side. Blood drawn from the second side cylinder is then collected by connecting the syringe tip to the existing blood collection tube. During blood collection on the second side, the valve orifice of the valve ball is kept closed by rotating the handle. When draining blood, the cap is opened, and rotating the valve ball connects the valve orifice to the side tube and the syringe tip. Before draining blood, the middle handle moves the middle cone away from the cone cavity, connecting the saline solution in the main cylinder to the connector for sealing.

[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the blood collection auxiliary device for blood drug concentration testing using an indwelling needle according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structural connection between the main cylinder and the connecting seat according to an embodiment of the present utility model;

[0024] Figure 3 This is a cross-sectional view of the main cylinder and connecting seat, and a structural schematic diagram of the middle cone block according to an embodiment of the present invention;

[0025] Figure 4 This is a cross-sectional structural diagram of the main cylinder and connecting seat according to an embodiment of the present utility model;

[0026] Figure 5 This is a schematic diagram of the middle plate and middle cone block structure described in an embodiment of the present utility model;

[0027] Figure 6 This is a cross-sectional structural diagram of the main cylinder and side cylinder according to an embodiment of the present utility model.

[0028] Figure 7 This is a cross-sectional structural diagram of the side cylinder and cone cylinder according to an embodiment of the present utility model;

[0029] Figure 8 This is a schematic diagram of the side cylinder and valve shell according to an embodiment of the present utility model;

[0030] Figure 9 This is a schematic diagram of the valve housing and side pipe according to an embodiment of the present invention;

[0031] Figure 10 This is a cross-sectional structural diagram of the side tube and injection cylinder head according to an embodiment of the present utility model;

[0032] Figure 11 This is a schematic diagram of the second structure of the blood-drawing auxiliary device for blood drug concentration testing using an indwelling needle according to an embodiment of the present invention;

[0033] Figure 12 This is a front view of the second structure of the blood collection auxiliary device for indwelling needles for blood drug concentration testing according to an embodiment of the present invention;

[0034] Figure 13 This is a side view of the second type of blood-drawing auxiliary device for blood drug concentration testing according to an embodiment of the present invention;

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1-Main cylinder, 102-Lower interface, 103-Connecting seat, 104-Side hole, 105-Conical cavity, 106-Middle membrane, 110-Middle plate, 111-Middle cone block, 112-Middle seat, 113-Middle handle, 114-Middle limit plate, 115-Middle screw, 2-Side cylinder, 201-Connecting cylinder, 202-Conical cylinder, 203-Side membrane, 210-Side plate, 211-Side cone column, 212-Side seat, 213-Side handle, 214-Side limit plate, 215-Side screw, 3-Valve shell, 301-Side tube, 302-Injection cylinder head, 303-Rotating handle, 304-Valve ball, 305-Valve hole, 310-Cap. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0038] Example 1

[0039] like Figure 1-10 As shown

[0040] The present invention provides a blood collection auxiliary device for indwelling needles for blood drug concentration testing, comprising a middle part, a side part, and a docking part. The side part is provided with two sets, which are arranged on both sides of the middle part. The middle part includes a main cylinder and a middle flow limiting component. The side part includes a side cylinder (2) and a side flow limiting component. The docking part includes a lower interface (102) and a draining component. The lower side of the main cylinder is provided with a middle limiting component, and the lower side of the middle limiting component is provided with a lower interface (102). The lower side of the side cylinder (2) is provided with a side flow limiting component. Two side limiting components are arranged between the middle limiting component and the lower interface (102). A draining component is connected to one side of the side flow limiting component.

[0041] The intermediate current limiting assembly includes a connecting seat (103), an intermediate membrane (106), an intermediate plate (110), an intermediate cone block (111), an intermediate seat (112), an intermediate handle (113), an intermediate limiting plate (114), and an intermediate screw (115). The connecting seat (103) is fixedly connected to the lower side of the main cylinder (1). The connecting seat (103) is fixedly connected to the lower interface (102). A conical cavity (105) is opened on the upper side of the connecting seat (103). The portion of the connecting seat (103) in the conical cavity (105) is... An open structure is provided on the upper side. A middle membrane (106) is fixedly connected to the open structure position of the connecting seat (103). The middle membrane (106) is fixedly connected to the connecting seat (103) and the main cylinder (1). A middle cone block (111) corresponding to the cone cavity (105) is slidably connected in the cone cavity (105). A middle plate (110) is fixedly connected to the middle cone block (111). The middle plate (110) passes through the middle membrane (106). The middle plate (110) is fixedly connected to the middle membrane (106).

[0042] The main cylinder (1) is fixedly connected to a middle seat (112) near the middle membrane (106). A middle handle (113) is rotatably connected to the middle seat (112). A middle screw (115) is provided on the lower side of the middle handle (113). The middle screw (115) is threadedly connected to the middle plate (110).

[0043] The middle handle (113) is fixedly connected to a middle limiting plate (114) inside the middle seat (112), and the middle limiting plate (114) is rotatably connected inside the middle seat (112);

[0044] The side limiting assembly includes a side cylinder (2), a connecting cylinder (201), a cone cylinder (202), a side membrane (203), a side plate (210), a side cone column (211), a side seat (212), a side handle (213), a side limiting plate (214), and a side screw (215). The connecting cylinder (201) is fixedly connected to the lower side of the side cylinder (2). The cone cylinder (202) is fixedly connected to the side of the connecting cylinder (201) near the main cylinder (1). The connecting seat (103) is located on the lower side of the cone cavity (105). Two side holes (104) are provided. The conical cylinder (202) is fixedly connected to the side hole (104) of the connecting seat (103). A side conical column (211) is slidably connected inside the conical cylinder (202). A side plate (210) is fixedly connected inside the connecting cylinder (201). A side membrane (203) is fixedly connected to the lower side of the connecting cylinder (201). The side plate (210) passes through the side membrane (203). The side plate (210) and the side membrane (203) are fixedly connected.

[0045] A side seat (212) is fixedly connected to one side of the connecting cylinder (201), and a side handle (213) is rotatably connected to the side seat (212). A side screw (215) is provided on the side handle (213) near the side plate (210), and the side screw (215) is threadedly connected to the side plate (210).

[0046] The side handle (213) is fixedly connected to a side limiting plate (214) inside the side seat (212), and the side limiting plate (214) is rotatably connected inside the side seat (212);

[0047] The drainage assembly includes a valve housing (3), a side tube (301), a syringe head (302), a handle (303), a valve ball (304), a valve hole (305), and a cap (310). A side tube (301) is fixedly connected to one of the side tubes (2). A valve housing (3) is fixedly connected in the middle of the side tube (301). A valve ball (304) is rotatably connected inside the valve housing (3). A valve hole (305) is opened in the middle of the valve ball (304). A handle (303) is fixedly connected to the valve ball (304). The handle (303) protrudes from the valve housing (3).

[0048] The side tube (301) is fixedly connected to the side away from the side tube (2) with an injection cylinder head (302), and a buckle (310) is snapped onto the injection cylinder head (302);

[0049] A rib is fixedly connected between the side tube (2) and the main tube (1);

[0050] The middle membrane (106) and the side membrane (203) are configured as wrinkled, low-compliance membranes.

[0051] Example 2

[0052] like Figure 11-13 As shown

[0053] The side tube (301) extends downwards to facilitate the connection between medical staff and the blood collection tube for blood transfer.

[0054] In summary, this utility model provides an auxiliary device for blood collection via an indwelling needle for blood drug concentration testing. In use, it connects to the indwelling needle on the patient via the lower interface (102). Residual fluid is drawn from the first side (without a drainage component). Rotating the side handle (213) controls the side cone (211) to move away from the cone (202), creating a gap between the side cone (211) and the cone (202). Pulling the push rod inside the side tube (2) initiates the extraction process until blood just enters the first side tube (2). Then, the side handle (213) on the first side is reversed, and the blood to be tested is drawn from the second side (with a drainage component) and compared with the first side. The side operation is the same. The blood drawn from the side tube (2) of the second side is connected to the existing blood collection tube through the syringe head (302) to complete the blood collection. When drawing blood on the second side, the valve hole (305) of the valve ball (304) is not connected by the rotating handle (303). When draining blood, the cap (310) is opened and the valve ball (304) is rotated to make the valve hole (305) connected to the side tube (301) and the syringe head (302). Before draining blood, the middle handle (113) is controlled to move the middle cone block (111) away from the cone cavity (105) so that the saline in the main tube (1) is connected to the connecting seat (103) for sealing operation.

[0055] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A blood-drawing auxiliary device for indwelling needles used for blood drug concentration testing, characterized in that: It includes a middle section, sides, and a docking section. The sides are provided in two sets, which are arranged on both sides of the middle section. The middle section includes a main cylinder and a middle flow limiting component. The sides include side cylinders and side flow limiting components. The docking section includes a lower interface and a draining component. The lower side of the main cylinder is provided with a middle limiting component, and the lower side of the middle limiting component is provided with a lower interface. The lower side of the side cylinder is provided with a side flow limiting component. Two side flow limiting components are arranged between the middle limiting component and the lower interface. A draining component is connected to one side flow limiting component.

2. The blood collection auxiliary device for indwelling needles for blood drug concentration testing as described in claim 1, characterized in that: The intermediate current limiting assembly includes a connecting seat, an intermediate membrane, an intermediate plate, an intermediate cone block, an intermediate seat, an intermediate handle, an intermediate limiting plate, and an intermediate screw. The connecting seat is fixedly connected to the lower side of the main cylinder. The connecting seat is fixedly connected to the lower interface. The connecting seat has a conical cavity on its upper side. The connecting seat has an open structure on the upper side of the conical cavity. The intermediate membrane is fixedly connected to the open structure of the connecting seat. The intermediate membrane is fixedly connected to the connecting seat and the main cylinder. A corresponding intermediate cone block is slidably connected inside the conical cavity. The intermediate plate is fixedly connected to the intermediate cone block. The intermediate plate passes through the intermediate membrane and is fixedly connected to the intermediate membrane.

3. The blood collection auxiliary device for indwelling needles for blood drug concentration testing as described in claim 2, characterized in that: A central seat is fixedly connected to the main cylinder near the middle membrane. A central handle is rotatably connected to the central seat. A central screw is provided on the lower side of the central handle. The central screw is threadedly connected to the central plate.

4. The blood collection auxiliary device for indwelling needles for blood drug concentration testing as described in claim 3, characterized in that: The middle handle is fixedly connected to a middle limiting plate inside the middle seat, and the middle limiting plate is rotatably connected inside the middle seat.

5. The blood collection auxiliary device for indwelling needles for blood drug concentration testing as described in claim 4, characterized in that: The side flow limiting assembly includes a side cylinder, a connecting cylinder, a cone cylinder, a side membrane, a side plate, a side cone column, a side seat, a side handle, a side limiting plate, and a side screw. The connecting cylinder is fixedly connected to the lower side of the side cylinder. The cone cylinder is fixedly connected to the side of the connecting cylinder near the main cylinder. The connecting seat has two side holes on the lower side of the cone cavity. The cone cylinder is fixedly connected to the side holes of the connecting seat. The side cone column is slidably connected inside the cone cylinder. The side plate is fixedly connected to the connecting cylinder inside the connecting cylinder. The side membrane is fixedly connected to the lower side of the connecting cylinder. The side plate passes through the side membrane and is fixedly connected to the side membrane.

6. The blood collection auxiliary device for indwelling needles for blood drug concentration testing as described in claim 5, characterized in that: A side seat is fixedly connected to one side of the connecting cylinder, and a side handle is rotatably connected to the side seat. A side screw is provided on the side handle near the side plate, and the side screw is threadedly connected to the side plate.

7. The blood collection auxiliary device for indwelling needles for blood drug concentration testing as described in claim 6, characterized in that: The side handle is fixedly connected to a side limiting plate inside the side seat, and the side limiting plate is rotatably connected inside the side seat.

8. The blood collection auxiliary device for indwelling needles for blood drug concentration testing as described in claim 7, characterized in that: The drainage assembly includes a valve housing, a side tube, a syringe head, a handle, a valve ball, a valve hole, and a cap. A side tube is fixedly connected to one of the side tubes, and a valve housing is fixedly connected to the middle of the side tube. A valve ball is rotatably connected inside the valve housing. A valve hole is opened in the middle of the valve ball, and a handle is fixedly connected to the valve ball. The handle extends out of the valve housing.

9. The blood collection auxiliary device for indwelling needles for blood drug concentration testing as described in claim 8, characterized in that: The side tube is fixedly connected to the syringe head on the side away from the side tube, and a cap is snapped onto the syringe head.

10. The blood collection auxiliary device for indwelling needles for blood drug concentration testing as described in claim 9, characterized in that: The middle membrane and side membranes are designed as wrinkled, low-compliance membranes.

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