Remaining needle blood sampling connector

Abstract

The utility model provides an indwelling needle blood taking connector which comprises a blood taking needle body. The sealing assembly is connected to the blood taking needle body so that the blood taking needle body can be connected into a blood taking tube in the vertical direction of the blood taking needle body; one end of the pipe fitting is connected with the blood taking needle body, and the other end of the pipe fitting is detachably connected with a remaining needle. Through the arrangement of the sealing assembly, the position of the blood taking needle body is fixed, so that it is guaranteed that the blood taking needle body can penetrate out along the central axis of the sealing assembly in the process of being inserted into the blood taking tube, and it is avoided that when the blood taking needle body is inserted into the blood taking tube and penetrates out of the side edge of the sealing assembly, a small part of one end of the sealing assembly is bent; therefore, the blood taking needle body can be completely inserted into the blood taking tube, and a small part of blood can be prevented from being taken out when the blood taking needle body is taken out.

Description

Technical Field

[0001] This application relates to a retention needle, and particularly to a blood sampling adapter for a retention needle. Background Art

[0002] When emergency patients enter the rescue room, to reduce the pain of multiple punctures for patients and shorten the rescue time, special departments such as the emergency rescue room usually need to collect blood for testing at the same time when establishing the intravenous access for the first time. The existing technology generally involves multiple punctures or inserting a common blood sampling needle into the heparin cap of the retention needle for blood sampling. Multiple punctures will waste time and cause discomfort to the patient. Inserting a blood sampling needle into the heparin cap of the retention needle is likely to cause needle stick injuries. Moreover, all the steel needle caps of the existing blood sampling needles are made of rubber material, which is easy to swing during the process of inserting the steel needle into the blood collection tube, resulting in misalignment during insertion and piercing out from the side of the steel needle sleeve. Pressing down forcefully will simultaneously increase the rupture of the puncture opening on the side of the steel needle sleeve, which is likely to cause insufficient sealing of the steel needle sleeve when the steel needle is withdrawn, blood flowing out from the rupture opening, or even the steel needle being unable to return to the steel needle sleeve, with a large amount of blood flowing out and an increased risk of needle stick injuries. Utility Model Content

[0003] The embodiments of this application provide a blood sampling adapter for a retention needle to solve the problems existing in the related technology. The technical solutions are as follows:

[0004] The embodiments of this application provide a blood sampling adapter for a retention needle, including:

[0005] A blood sampling needle body;

[0006] A sealing assembly, which is connected to the blood sampling needle body to enable the blood sampling needle body to access the blood collection tube along the vertical direction of the blood sampling needle body;

[0007] A pipe fitting, one end of which is connected to the blood sampling needle body, and the other end is detachably connected to the retention needle.

[0008] In one implementation manner,

[0009] The blood sampling needle body includes:

[0010] A steel needle, which accesses the blood collection tube;

[0011] A housing, on which the steel needle is installed, and the housing is connected to one end of the pipe fitting;

[0012] A fin-shaped needle seat, which is connected to the housing.

[0013] In one implementation manner,

[0014] The sealing assembly includes:

[0015] A steel needle cannula, the steel needle cannula is fixed on the housing, and the steel needle is located inside the steel needle cannula;

[0016] A fixing block, the fixing block is located inside the steel needle cannula, the steel needle penetrates through the fixing block, when the steel needle is inserted into the blood collection tube, the fixing block ensures that the steel needle is in the same direction as the steel needle cannula, so that the steel needle is inserted into the blood collection tube along the vertical direction of the steel needle;

[0017] A flow-limiting block, the flow-limiting block is installed on the steel needle cannula, and the liquid outlet end of the steel needle corresponds to the position of the flow-limiting block.

[0018] In one embodiment,

[0019] The cross-section of the flow-limiting block is in the shape of a double-leaf valve, and is used for limiting the flow of the liquid outlet end of the steel needle.

[0020] In one embodiment,

[0021] The steel needle cannula is a rubber tube, so that the steel needle can puncture the steel needle cannula.

[0022] In one embodiment,

[0023] The flow-limiting block is located below the fixing block.

[0024] In one embodiment,

[0025] The pipe fitting includes:

[0026] An infusion tube;

[0027] A steel needle connector, the steel needle connector is located at one end of the infusion tube, and the steel needle connector is detachably connected to the housing;

[0028] A retention needle connector, the retention needle connector is located at the end of the infusion tube far from the steel needle connector, and the retention needle connector is detachably connected to the retention needle.

[0029] In one embodiment,

[0030] The retention needle connector is a Luer connector end, so that other needles can be connected to the infusion tube.

[0031] In one embodiment,

[0032] A needle seat is connected to one end of the infusion tube close to the steel needle connector.

[0033] In one embodiment,

[0034] The retention needle connector has a thread, so that the infusion tube can be connected to the retention needle.

[0035] The advantages or beneficial effects in the above technical solutions at least include:

[0036] Through the setting of the sealing component, the position of the blood collection needle body is fixed, so as to ensure that the blood collection needle body can pass out along the central axis of the sealing component during the process of inserting the blood collection needle body into the blood collection tube, avoiding the blood collection needle body passing out from the side of the sealing component when inserting the blood collection needle body into the blood collection tube, resulting in a small part of one end of the sealing component being bent, thus affecting the complete insertion of the blood collection needle body into the blood collection tube, and avoiding taking out the blood collection needle body and bringing out a small amount of blood.

[0037] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the drawings and the following detailed description. Description of the Drawings

[0038] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0039] Figure 1 It is a schematic structural diagram of the present utility model;

[0040] Figure 2 is Figure 1 a schematic structural diagram of the housing and the sealing component in;

[0041] Figure 3 is Figure 2 an enlarged schematic structural diagram of part A in;

[0042] In the figure: 100, indwelling needle blood collection adapter;

[0043] 110, blood collection needle body; 111, steel needle; 112, housing; 113, fin-shaped needle seat;

[0044] 120, sealing component; 121, steel needle sleeve; 122, fixing block; 123, flow limiting block;

[0045] 130, pipe fitting; 131, infusion tube; 132, steel needle joint; 133, indwelling needle joint; 134, needle seat. Detailed Embodiments

[0046] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0047] Figures 1 - 3 The flowchart showing a blood collection adapter 100 for an indwelling needle according to an embodiment of the present application.

[0048] As Figures 1 - 3 shown, the blood collection adapter 100 for an indwelling needle may include:

[0049] A blood collection needle body 110;

[0050] A sealing assembly 120, the sealing assembly 120 being connected to the blood collection needle body 110 to enable the blood collection needle body 110 to access a blood collection tube along the vertical direction of the blood collection needle body 110;

[0051] A pipe fitting 130, one end of the pipe fitting 130 being connected to the blood collection needle body 110 and the other end being detachably connected to an indwelling needle.

[0052] In this embodiment, the sealing assembly 120 and the blood collection needle body 110 are of an integral structure. Through the setting of the sealing assembly 120, the position of the blood collection needle body 110 is fixed, so as to ensure that the blood collection needle body 110 can penetrate out along the central axis of the sealing assembly 120 during the process of inserting the blood collection needle body 110 into the blood collection tube, and to avoid the blood collection needle body 110 piercing out from the side of the sealing assembly 120 when inserting the blood collection needle body 110 into the blood collection tube, resulting in a small part of one end of the sealing assembly 120 being bent, thereby affecting the complete insertion of the blood collection needle body 110 into the blood collection tube, and also avoiding bringing out a small amount of blood when taking out the blood collection needle body 110.

[0053] Through the setting of the pipe fitting 130, it is convenient to connect the indwelling needle and the pipe fitting 130, and it is also convenient to connect and disassemble the pipe fitting 130 and the indwelling needle. During the connection process between the pipe fitting 130 and the indwelling needle, it is necessary to remove the heparin cap on the indwelling needle and thread-connect the end of the pipe fitting 130 far from the blood collection needle body 110 to the indwelling needle, which is more stable than the form of directly inserting the needle into the heparin cap in the prior art.

[0054] In one embodiment,

[0055] The blood collection needle body 110 includes:

[0056] A steel needle 111, the steel needle 111 accessing an infusion bottle or a blood collection tube;

[0057] The housing 112, the steel needle 111 is installed on the housing 112, and the housing 112 is connected to one end of the pipe fitting 130;

[0058] The fin-shaped needle seat 113, the fin-shaped needle seat 113 is connected to the housing 112.

[0059] In this embodiment, the housing 112 is connected to the pipe fitting 130, and the blood drawn out of the indwelling needle is conveyed into the blood collection tube through the pipe fitting 130. The fin-shaped needle seat 113 facilitates the holding of the housing 112.

[0060] In one implementation manner,

[0061] The sealing assembly 120 includes:

[0062] The steel needle sleeve 121, the steel needle sleeve 121 is fixed on the housing 112, and the steel needle 111 is located inside the steel needle sleeve 121;

[0063] The fixing block 122, the fixing block 122 is located inside the steel needle sleeve 121, and the steel needle 111 penetrates through the fixing block 122. When the steel needle 111 is inserted into the blood collection tube or the hanging bottle, the fixing block 122 ensures that the steel needle 111 is in the same direction as the steel needle sleeve 121, so that the steel needle 111 is inserted into the hanging bottle or the blood collection tube along the vertical direction of the steel needle 111;

[0064] The flow-limiting block 123, the flow-limiting block 123 is installed on the steel needle sleeve 121, and the liquid outlet end of the steel needle 111 corresponds to the position of the flow-limiting block 123.

[0065] In this embodiment, the steel needle sleeve 121 is fixedly connected to the outer shell, the steel needle 111 is located inside the steel needle sleeve 121, and the steel needle 111 passes through the fixing block 122. The position of the steel needle 111 is limited by the setting of the fixing block 122, so as to ensure that the steel needle 111 can penetrate along the central axis of the steel needle sleeve 121 during the insertion into the blood collection tube, and avoid the steel needle 111 piercing out from the side of the steel needle sleeve 121 during the insertion into the blood collection tube, resulting in a small part of one end of the steel needle sleeve 121 being bent, thus affecting the complete insertion of the steel needle 111 into the blood collection tube.

[0066] The flow-limiting block 123 imitates the structure of the human mitral valve. When the steel needle 111 breaks through the flow-limiting block 123 and is inserted into the blood collection tube, after the steel needle 111 is pulled out of the blood collection tube, since the steel needle sleeve 121 is made of a rubber tube and has elasticity, the steel needle sleeve 121 wraps the steel needle 111 again, and the mitral valve of the limiting block automatically closes to prevent blood from dripping out of the needle;

[0067] Through the arrangement of the fixing block 122, a short section at the bottom of the steel needle sleeve 121 is a rigid sleeve, and the rest is a rubber tube. While ensuring that the rubber tube elastically wraps the steel needle 111, the tip of the needle can only pierce forward, ensuring that the steel needle 111 can be completely inserted into the blood collection tube.

[0068] In one embodiment,

[0069] The steel needle sleeve 121 is a rubber tube so that the steel needle 111 pierces the steel needle sleeve 121.

[0070] In this embodiment, the steel needle sleeve 121 is a rubber tube. When the steel needle 111 is connected to the blood collection tube, it is convenient for the steel needle 111 to pass through the rubber tube and enter the blood collection tube.

[0071] In one embodiment,

[0072] The flow-limiting block 123 is located below the fixing block 122.

[0073] In this embodiment, the steel needle 111 passes through the fixing block 122. Through the arrangement of the fixing block 122, the position of the steel needle 111 is limited to prevent it from being inserted obliquely and piercing through the steel needle sleeve 121. The cross-section of the flow-limiting block 123 is in the shape of a double-lobe valve, which is used to limit the flow of the liquid outlet end of the steel needle 111.

[0074] In one embodiment,

[0075] The pipe fitting 130 includes:

[0076] An infusion tube 131;

[0077] A steel needle connector 132, which is located at one end of the infusion tube 131, and the steel needle connector 132 is detachably connected to the housing 112;

[0078] A indwelling needle connector 133, which is located at the end of the infusion tube 131 far from the steel needle connector 132, and the indwelling needle connector 133 is detachably connected to the indwelling needle.

[0079] In this embodiment, the infusion tube 131 is detachably connected to the housing 112 through the steel needle connector 132, which is convenient for the disassembly of the infusion tube 131 and the housing 112. The indwelling needle connector 133 is connected to the indwelling needle. The indwelling needle connector 133 is a Luer connector end (Luer taper is a standardized micro-leakage-free connector, which is connected through the male Luer connector and the matching female Luer connector part). Since the indwelling needle connector 133 is a Luer connector, the indwelling needle connector 133 is threadedly connected to the indwelling needle through a thread, which is convenient for the connection and disconnection of other infusion needles, thus ensuring the stability during connection and facilitating the disassembly of the indwelling needle blood collection connector 100;

[0080] Furthermore, the outside of the steel needle connector 132 is also provided with a thread adapted to the indwelling needle connector 133, so that the steel needle connector 132 is connected to the indwelling needle connector 133 on other indwelling needle blood collection needles 100.

[0081] In one embodiment,

[0082] One end of the infusion tube 131 close to the steel needle connector 132 is connected with a needle seat 134.

[0083] In this embodiment, when the infusion tube 131 is connected to the housing 112, the infusion tube 131 is inserted into the housing 112 by holding the needle seat 134, and the needle seat 134 cooperates with the fin-shaped needle seat 113 to fix the steel needle 111 and the housing 112, ensuring the stability of the steel needle 111.

[0084] In one embodiment,

[0085] The indwelling needle connector 133 has a thread to connect the infusion tube 131 to the indwelling needle.

[0086] In this embodiment, the indwelling needle connector 133 has a thread, which can ensure the stability when the indwelling needle connector 133 is connected to the blood collection tube.

[0087] For the functions of the modules in each device of the embodiments of the present utility model, reference may be made to the corresponding descriptions in the above methods, which will not be elaborated herein.

[0088] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0089] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0090] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various changes or substitutions thereof, and these should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An indwelling needle blood collection connector, characterized in that: include: Blood collection needle body; A sealing component, wherein the sealing component is connected to the blood collection needle body so that the blood collection needle body is connected to the blood collection tube along the vertical direction of the blood collection needle body; A tube, one end of which is connected to the blood collection needle body, and the other end of which is detachably connected to the indwelling needle; The blood collection needle body comprises: A steel needle, the steel needle is inserted into the blood collection tube; A housing, the steel needle is mounted on the housing, and the housing is connected to one end of the pipe; A fin-shaped needle seat, the fin-shaped needle seat is connected to the housing; The sealing assembly comprises: A steel needle cannula, wherein the steel needle cannula is fixed on the shell, and the steel needle is located in the steel needle cannula; A fixing block, the fixing block is located inside the steel needle sleeve, the steel needle passes through the fixing block, and when the steel needle is inserted into the blood collection tube, the fixing block ensures that the steel needle and the steel needle sleeve are in the same direction, so that the steel needle is inserted into the blood collection tube along the vertical direction of the steel needle; A flow limiting block is installed on the steel needle sleeve, and the liquid outlet end of the steel needle corresponds to the position of the flow limiting block.

2. The indwelling needle blood sampling connector according to claim 1, characterized in that: The cross section of the flow limiting block is in the shape of a double-leaf valve, and is used to limit the flow at the liquid outlet end of the steel needle.

3. The indwelling needle blood sampling connector according to claim 1, characterized in that: The steel needle cannula is a rubber tube, so that the steel needle can puncture the steel needle cannula.

4. The indwelling needle blood sampling connector according to claim 1, characterized in that: The current limiting block is located below the fixing block.

5. The indwelling needle blood sampling connector according to claim 1, characterized in that: The pipe fittings include: Infusion tube; A steel needle connector, the steel needle connector is located at one end of the infusion tube, and the steel needle connector is detachably connected to the housing; An indwelling needle connector, the indwelling needle connector is located at one end of the infusion tube away from the steel needle connector, and the indwelling needle connector is detachably connected to the indwelling needle.

6. The indwelling needle blood sampling connector according to claim 5, characterized in that: The indwelling needle connector is a Luer connector end, so that other needles can be connected to the infusion tube.

7. The indwelling needle blood sampling connector according to claim 5, characterized in that: One end of the infusion tube close to the steel needle connector is connected with a needle seat.

8. The indwelling needle blood sampling connector according to claim 5, characterized in that: The indwelling needle connector is provided with threads to connect the infusion tube to the indwelling needle.

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