Needle head connector capable of reducing residues and needle base and needle cylinder connecting assembly comprising needle head connector

Abstract

The utility model relates to a needle head connector capable of reducing residue and a needle base and needle cylinder connecting assembly comprising the needle head connector, the needle head connector is used for being installed in an inner cavity of a needle base, the needle head connector comprises a connector body, the connector body is provided with a first abutting flat wall and a second abutting flat wall, and the first abutting flat wall and the second abutting flat wall are opposite to each other. The connector body is further provided with a connecting side wall connected between the first abutting flat wall and the second abutting flat wall, the first abutting flat wall is located on the side, close to a needle, of a needle tube, and the second abutting flat wall is located on the side, close to a needle cylinder, of the needle tube. The connector body is further provided with a throttling channel penetrating through the first abutting flat wall and the second abutting flat wall. The needle head connector capable of reducing the residues is used for being installed in the inner cavity of the needle base, the front end connector of the needle cylinder can be directly connected with the needle tube on the needle base through the throttling channel, then waste of liquid medicine, paste, cleaning liquid and the like is reduced, the using amount of related liquid medicine and the like is reduced, and the treatment cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a needle hub and syringe connection assembly that reduces residue. Background Technology

[0002] In the medical field, the delivery of medications, pastes, and cleaning solutions is often involved, typically using syringes or infusion devices combined with needles. After the needle is connected to the syringe or infusion device to deliver the medication, paste, or cleaning solution, a significant amount of the delivered material remains in the needle hub. In certain scenarios, these medications, pastes, and cleaning solutions are extremely expensive, and it is a great pity to waste such a large amount, unnecessarily increasing treatment costs.

[0003] A needle typically consists of a needle tube and a needle hub. The needle tube is mounted on the needle hub and is connected to a syringe or delivery device via the needle hub. One existing needle hub structure is as follows: Figure 1 As shown, the needle hub includes a needle tube mounting portion 1, a connecting portion 2, and a transition portion 3 located between the two. The needle tube is fixed in the mounting cavity 11 of the needle tube mounting portion 1. The connecting portion 2 is used to connect with the syringe barrel of the delivery device. The front end interface of the delivery device syringe barrel is inserted into the inner cavity 21 of the connecting portion 2 of the needle tube. The transition portion 3 has a transition cavity 31 that connects the inner cavity 21 and the mounting cavity 11. Since the needle hub needs to connect both the needle tube and the syringe barrel simultaneously, the inner cavity 21 connecting the syringe barrel is usually much larger in diameter than the mounting cavity 11 connecting the syringe barrel. Therefore, there is a transition cavity 31 with a gradually decreasing diameter between the inner cavity 21 and the mounting cavity 11, which also forms a stepped wall 22 between the inner cavity 21 and the mounting cavity 11, which facilitates a certain limiting effect on the front end interface of the delivery device syringe barrel. When delivering materials from the syringe, the space formed by the inner cavity 21 of the connecting part 2 of the needle hub, the transition cavity of the transition part 3, and the front end of the syringe becomes a residual space. When the materials in the syringe are pushed from the syringe to the needle tube, some of the materials remain in this residual space, resulting in waste of the paste, reduced material utilization, and increased treatment costs. Utility Model Content

[0004] Therefore, it is necessary to provide a needle hub and syringe connection assembly that can solve the problem of excessive residual space between the existing needle hub and syringe, which leads to unnecessary waste of drugs or pastes, reduce treatment costs, and has a relatively simple and convenient solution.

[0005] In a first aspect, this application provides a needle connector for installation in the inner cavity of a needle hub. The needle connector includes a connector body having opposing first and second abutment flat walls. The connector body also has a connecting sidewall connected between the first and second abutment flat walls. The first abutment flat wall is located on the side of the needle tube adjacent to the needle, and the second abutment flat wall is located on the side of the syringe barrel adjacent to the needle. The connector body also has a throttling channel penetrating the first and second abutment flat walls.

[0006] In one embodiment, the throttling channel has a circular cross-section.

[0007] In one embodiment, the diameter of the throttling channel gradually decreases from the first abutting flat wall toward the second abutting flat wall.

[0008] In one embodiment, the connector body is cylindrical or has a platform.

[0009] In one embodiment, the connector body is in the shape of an oblique cylindrical structure or an oblique cylindrical structure with a platform.

[0010] In one embodiment, the connector body further protrudes from the first abutting flat wall, and the throttling channel passes through the extension.

[0011] In one embodiment, the outer surface of the connector body also has an adhesive layer or mechanical fastening part for connecting to the inner cavity sidewall.

[0012] In one embodiment, the connector body has an injection-molded structure, an extrusion-molded structure, or a 3D-printed structure.

[0013] Secondly, this application also provides a needle hub and syringe connecting assembly, including a needle hub, a syringe, and a needle tip connector, wherein the needle tip connector is the needle tip connector described in any of the above embodiments.

[0014] In one embodiment, the needle holder has a connected needle tube mounting portion, a transition portion, and a connecting portion. The needle tube mounting portion has a mounting cavity for mounting a needle tip. The connecting portion has an inner cavity. The transition portion has a transition cavity communicating with the inner cavity and the mounting cavity. The inner cavity of the needle holder has a stepped wall. The syringe has a front end interface. A second pressing flat wall abuts against the front end interface, and the front end interface is connected to the throttling channel. The first pressing flat wall abuts against the stepped wall. The front end interface is connected to the mounting cavity through the throttling channel.

[0015] The aforementioned needle connector for reducing residual needle material is used to install within the inner cavity of a needle hub. The needle connector includes a connector body with opposing first and second abutment walls. The connector body also has a connecting sidewall connecting the first and second abutment walls. The first abutment wall is located on the side adjacent to the needle tube, and the second abutment wall is located on the side adjacent to the syringe barrel. The connector body also has a throttling channel penetrating the first and second abutment walls. This allows the front end of the syringe barrel to directly connect to the needle tube on the needle hub through the throttling channel, thereby reducing waste of medications, pastes, cleaning solutions, etc., and lowering the amount of related medications used, thus reducing treatment costs. Furthermore, this application uses a simple and convenient method of directly adding the needle connector to the needle hub, without requiring modifications to the existing needle hub. The needle hub connector of this application can be installed on currently available conventional needle hubs, thus adding the connector without altering the original needle hub structure, making it economical and convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a needle hub in the prior art;

[0017] Figure 2a This is a schematic diagram of the structure of a needle connector according to an embodiment of the present invention;

[0018] Figure 2b This is a schematic diagram of the structure of a needle connector according to an embodiment of the present invention;

[0019] Figure 2c This is a schematic diagram of the structure of a needle connector according to an embodiment of the present invention;

[0020] Figure 2d This is a schematic diagram of the structure of a needle connector according to an embodiment of the present invention;

[0021] Figure 2e This is a schematic diagram of the structure of a needle connector according to an embodiment of the present invention;

[0022] Figure 2f This is a schematic diagram of the structure of a needle connector according to an embodiment of the present invention;

[0023] Figure 2g This is a schematic diagram of the structure of a needle connector according to an embodiment of the present invention;

[0024] Figure 2h This is a schematic diagram of the structure of a needle connector according to an embodiment of the present invention;

[0025] Figure 2i This is a schematic diagram of the structure of a needle connector according to an embodiment of the present invention;

[0026] Figure 3a This is a schematic diagram of the structure of a needle connector of the present invention installed on a prior art needle holder according to an embodiment of the present invention;

[0027] Figure 3b This is a schematic diagram of the structure of a needle connector of the present invention installed on a prior art needle holder. Detailed Implementation

[0028] To facilitate understanding of this utility model and to make the aforementioned objects, features, and advantages of this utility model more apparent, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this utility model, and preferred embodiments of this utility model are shown in the accompanying drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model. This utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model; therefore, this utility model is not limited to the specific embodiments disclosed below. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. In the description of this utility model, "a number" means at least one, such as one, two, etc., unless otherwise explicitly specified. It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not indicate the only possible embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the utility model. It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Firstly, this application provides a connector for a needle; please refer to [link to relevant documentation]. Figures 2a to 2i , Figure 3a and Figure 3b ,in Figures 2a to 2i The structure is designed for connectors used with various needles. Figure 3a This is a schematic diagram illustrating the installation of the needle connector 5c to the needle hub according to one embodiment. Figure 3b This is a schematic diagram illustrating the installation of a needle connector 5h onto a needle holder according to one embodiment. In this application, needle connectors (5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i) are used to install within the inner cavity 21 of the needle holder. Each needle connector (5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i) includes a connector body. The connector body has opposing first and second abutment flat walls 51 and 52, both of which are straight walls. The connector body also has a connecting sidewall 53 connecting the first and second abutment flat walls 51 and 52, respectively. The first abutment flat wall 51 is located on the side adjacent to the needle tube, and the second abutment flat wall 52 is located on the side adjacent to the syringe barrel. The connector body also has a throttling channel 54 penetrating the first and second abutment flat walls.

[0030] The aforementioned needle connector for reducing residual needle material is used to install within the inner cavity of a needle hub. The needle connector includes a connector body with opposing first and second abutment walls. The connector body also has a connecting sidewall connecting the first and second abutment walls. The first abutment wall is located on the side adjacent to the needle tube, and the second abutment wall is located on the side adjacent to the syringe barrel. The connector body also has a throttling channel penetrating the first and second abutment walls. This allows the front end of the syringe barrel to directly connect to the needle tube on the needle hub through the throttling channel, thereby reducing waste of medications, pastes, cleaning solutions, etc., and lowering the amount of related medications used, thus reducing treatment costs. Furthermore, this application uses a simple and convenient method of directly adding the needle connector to the needle hub, without requiring modifications to the existing needle hub. The needle hub connector of this application can be installed on currently available conventional needle hubs, thus adding the connector without altering the original needle hub structure, making it economical and convenient. For example, the throttling channel 54 has a circular cross-section. For example, the diameter of the throttling channel gradually decreases from the first abutting flat wall towards the second abutting flat wall, such as... Figure 2g , Figure 2i , Figure 2d , Figure 2e Of course, the throttling channel 54 can also have a constant diameter, such as... Figure 2a , Figure 2b , Figure 2c , Figure 2f , Figure 2h .

[0031] In one embodiment, the connector body is cylindrical or has a platform. A cylindrical structure, such as... Figure 2f , Figure 2gIn this case, the cylindrical structure with the platform is as shown in 2c. Figure 2d , Figure 2e In this embodiment, the platform can also be understood as a disc-shaped part.

[0032] In one embodiment, the connector body is shaped like a slanted cylinder or a slanted cylinder with a platform. A slanted cylinder structure, such as... Figure 2a In such cases, a slanted cylindrical structure with a platform, such as Figure 2b , Figure 2c The situation.

[0033] In one embodiment, please refer to Figure 2h and Figure 2i The connector body also has an extension 55 protruding from the first abutting flat wall 51, and the throttling channel 54 passes through the extension 55. By providing the extension 55, it is convenient to extend the throttling channel 54 to the mounting cavity for mounting the needle tube.

[0034] In one embodiment, the outer surface of the connector body further has an adhesive layer or mechanical fastening part for connecting to the inner cavity sidewall. That is, the connector for the needle hub can be processed separately from the needle hub and then assembled; the connector and needle hub can be combined by resin adhesive bonding, UV-cured adhesive bonding, or mechanical fastening. Of course, the needle hub connector of this application can be installed on conventional needle hubs currently on the market (…). Figure 1 (See the structural diagram of a standard needle holder on the market). This allows for the addition of a connector without altering the original needle holder structure, making it economical and convenient.

[0035] In one embodiment, the connector body has an injection-molded structure, an extrusion-molded structure, or a 3D-printed structure. That is, the pin connector of this application can be manufactured by injection molding, extrusion molding, or 3D printing.

[0036] In one embodiment, the connector for the pin socket can be made of either metal or non-metal. Metallic materials may include nickel-titanium alloys, stainless steel, cobalt-chromium alloys, titanium alloys, etc. Non-metallic materials may include polypropylene, TPU, resin materials, etc.

[0037] The aforementioned needle connector for reducing residual needle material is used to install within the inner cavity of a needle hub. The needle connector includes a connector body with opposing first and second abutment walls. The connector body also has a connecting sidewall connecting the first and second abutment walls. The first abutment wall is located on the side adjacent to the needle tube, and the second abutment wall is located on the side adjacent to the syringe barrel. The connector body also has a throttling channel penetrating the first and second abutment walls. This allows the front end of the syringe barrel to directly connect to the needle tube on the needle hub through the throttling channel, thereby reducing waste of medications, pastes, cleaning solutions, etc., and lowering the amount of related medications used, thus reducing treatment costs. Furthermore, this application uses a simple and convenient method of directly adding the needle connector to the needle hub, without requiring modifications to the existing needle hub. The needle hub connector of this application can be installed on currently available conventional needle hubs, thus adding the connector without altering the original needle hub structure, making it economical and convenient.

[0038] Secondly, this application also provides a needle hub and syringe connecting assembly, including a needle hub, a syringe, and a needle tip connector, wherein the needle tip connector is the needle tip connector described in any of the above embodiments.

[0039] In one embodiment, please refer to Figures 2a to 2i , Figure 3a and Figure 3b The needle holder has a needle tube mounting part 1, a transition part 3, and a connecting part 2 connected together. The needle tube mounting part 1 has a mounting cavity 11 for mounting the needle. The connecting part 2 has an inner cavity 21. The transition part 3 has a transition cavity 31 that connects the inner cavity 21 and the mounting cavity 11. The inner cavity 21 of the needle holder has a stepped wall 22. The syringe has a front end interface. The second pressing flat wall 52 abuts against the front end interface, and the front end interface is connected to the throttling channel 54. The first pressing flat wall 51 abuts against the stepped wall 22. The front end interface is connected to the mounting cavity 11 through the throttling channel 54.

[0040] The aforementioned needle hub and syringe connection assembly employs a needle tip connector designed to reduce residual needle material. This connector is installed within the inner cavity of the needle hub. The connector includes a connector body with opposing first and second abutment walls. It also has a connecting sidewall connecting the first and second abutment walls. The first abutment wall is located on the side adjacent to the needle tube, and the second abutment wall is located on the side adjacent to the syringe barrel. The connector body further has a throttling channel penetrating the first and second abutment walls. This allows the syringe tip to be directly connected to the needle tube on the needle hub via the throttling channel, reducing waste of medications, pastes, cleaning solutions, etc., thus lowering treatment costs. Furthermore, this application uses a simple and convenient method of directly adding the needle tip connector to the needle hub, without requiring modifications to the existing needle hub. The needle hub connector of this application can be installed on conventional needle hubs currently available on the market, allowing for economical and convenient installation without altering the original needle hub structure.

[0041] It should be noted that the needle connector of this application is a connector that reduces residue and improves the utilization rate of materials inside medical syringes. The connector is used in conjunction with the needle hub. The needle hub connector of this application can be conical, a conical shape with a platform, cylindrical, etc. The needle hub connector of this application has a central hole, forming a throttling channel, which communicates with the central hole of the needle tube connection portion. The needle hub connector of this application can be installed on conventional needle hubs currently on the market (…). Figure 1 (See the structural diagram of a conventional needle socket on the market). This allows for the addition of a connector without altering the original needle socket structure, making it economical and convenient. The needle socket connector of this application can be assembled after the needle socket is processed separately. The connector and needle socket can be combined using resin adhesive, UV-cured adhesive, or mechanical fastening. Figure 3a , Figure 3b This is a structural diagram of the needle hub of this patent. The needle hub connector of this application can be manufactured by injection molding, extrusion molding, or 3D printing. The material of the needle hub connector of this application can be metal or non-metal. Metal materials can be nickel-titanium alloy, stainless steel, cobalt-chromium alloy, titanium alloy, etc. Non-metal materials can be polypropylene, TPU, resin materials, etc.

[0042] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. It should be noted that the terms "in one embodiment," "for example," and "again," etc., in this application are intended to illustrate the application and not to limit it. The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A connector for reducing residual needle tip, characterized in that, The needle connector is used to install in the inner cavity of the needle holder. The inner cavity of the needle holder has a stepped wall, and the syringe has a front end interface. The needle connector includes a connector body, which has a first and a second flat wall that are opposite to each other and are both straight walls. The connector body also has a connecting side wall connecting the first and second flat walls. The first flat wall is located on the side of the needle tube adjacent to the needle and abuts against the stepped wall of the inner cavity of the needle holder. The second flat wall is located on the side of the syringe adjacent to the syringe and abuts against the front end interface of the syringe. The connector body also has a straight-through throttling channel that penetrates the first and second flat walls. The connector body also has an extension protruding from the first flat wall, and the throttling channel passes through the extension. The front end interface is connected to the throttling channel, which has a circular cross-section. The diameter of the throttling channel gradually decreases from the first flat wall towards the second flat wall.

2. The connector for needles according to claim 1, characterized in that, The connector body has a cylindrical structure or a cylindrical structure with a platform.

3. The connector for needles according to claim 1, characterized in that, The connector body is shaped like an oblique cylindrical structure or an oblique cylindrical structure with a platform.

4. The connector for needles according to claim 1, characterized in that, The outer surface of the connector body also has an adhesive layer or mechanical fastening part for connecting to the inner cavity sidewall.

5. The connector for needles according to claim 1, characterized in that, The connector body has an injection molding structure, an extrusion molding structure, or a 3D printing molding structure.

6. A needle hub and syringe connecting assembly, characterized in that, It includes a needle hub, a syringe, and a needle connector, wherein the needle connector is the needle connector as described in any one of claims 1 to 5.

7. The needle hub and syringe connecting assembly according to claim 6, characterized in that, The needle hub has a needle tube mounting part, a transition part and a connecting part connected together. The needle tube mounting part has a mounting cavity for mounting the needle. The connecting part has an inner cavity. The transition part has a transition cavity that connects the inner cavity and the mounting cavity. The front end interface is connected to the mounting cavity through the throttling channel.

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