Medical liquid extraction connector

Abstract

The utility model relates to the technical field of medical instruments, in particular to a medical liquid extraction connector which comprises a puncture needle, a water storage tank and a liquid extraction opening, a water storage cavity is formed in the water storage tank, the puncture needle penetrates out from the inside of the water storage cavity to the top of the water storage tank from bottom to top, the puncture needle is further fixedly connected to the water storage tank, and the liquid extraction opening is formed in the puncture needle. A plurality of hollow grooves are evenly formed in the side wall, located on the lower portion of the water storage cavity, of the puncture needle, the bottom of the puncture needle is closed, the liquid extraction opening is of a hollow cylinder structure, penetrates through and is in threaded connection with the bottom end of the water storage groove, and the top end of the liquid extraction opening is further detachably in sealed threaded connection with the position, close to the bottom, of the side wall of the puncture needle. The utility model provides the medical liquid extraction interface which can reduce the puncture frequency of the rubber plug and reduce the generation of transfusion particles.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a medical liquid extraction interface. Background Art

[0002] In daily diagnosis and treatment activities, nursing staff need to prepare a large number of intravenous medications every day. In this process, nurses need to puncture the rubber stoppers on the solvent bag (bottle) and the drug bag (bottle) many times to extract solutions or dilute the drug solution. Each puncture will inevitably produce infusion particles, and the infusion particles may cause a series of complications after entering the human body. For patients who only use infusion sets for infusion, precision filters can be used to filter infusion particles. However, some patients, especially critically ill patients, often need continuous intravenous pumping of specific drugs to improve vital signs, and the extension tubes used for intravenous pumping often do not have precision filtering devices or are relatively expensive. In addition, in clinical practice, when patients are given intravenous pumping drugs, the solvent often uses 500ml / bag (bottle) of normal saline or glucose injection. Each bag of solvent is often used for multi-tube drug preparation. For example, 50ml of solution needs to be extracted each time the rubber stopper is punctured. A single rubber stopper is punctured at least 10 times, and the risk of infusion particles is greatly increased. Therefore, how to reduce the generation of infusion particles from the source is the key to improving this problem.

[0003] Currently, the commonly used solvent packaging extraction ports are divided into single rubber stopper ports (which can be punctured by either steel needles or plastic needles) or double ports (one side of the rubber stopper port - can be punctured by steel needles, and one side of the plastic port - can be punctured by plastic needles). By adding a regulating valve to the puncture needle, the puncture needle can be fixed on the interface of the solvent bag (bottle) while avoiding solution leakage. Nurses can extract drug solutions multiple times and reduce the number of rubber stopper punctures, thereby reducing the generation of infusion particles. Utility Model Content

[0004] The purpose of the utility model is to provide a medical liquid extraction interface to solve the technical problems existing in the above-mentioned background technology.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A medical liquid extraction interface comprises: a puncture needle, a water storage tank and a liquid extraction port, wherein a water storage cavity is provided inside the water storage tank, and the puncture needle passes through the water storage cavity from bottom to top to the top of the water storage tank, and the puncture needle is also fixedly connected to the water storage tank, and a plurality of hollow grooves are evenly arranged on the lower side wall of the water storage cavity where the puncture needle is located, and the bottom of the puncture needle is closed, and the liquid extraction port is a hollow cylindrical structure, and the liquid extraction port passes through and is threadedly connected to the bottom end of the water storage tank, and the top end of the liquid extraction port is also detachably sealed and threadedly connected to the side wall of the puncture needle near the bottom, and a syringe interface is detachably plugged into the bottom of the liquid extraction port.

[0007] Furthermore, the puncture needle also includes: a needle body, the bottom of the needle body is closed and a liquid extraction channel is opened inside, a plurality of hollow grooves are evenly opened on the lower side wall of the needle body for connecting the liquid extraction channel and the water storage chamber, and an external thread is opened at a position near the bottom of the side wall of the needle body.

[0008] Furthermore, the water storage tank includes: a tank body, a water storage cavity is arranged inside the tank body, a through connection hole is opened in the middle of the top of the tank body, and the middle of the outer wall of the needle body penetrates and is fixedly connected in the through connection hole.

[0009] Furthermore, an internal threaded hole connected to the water storage chamber is opened in the middle of the bottom end of the trough body, and the liquid extraction port includes: a column, a liquid outlet channel running from bottom to top is opened inside the column, and two external threads are provided on the outer wall of the column, and the column is threadedly connected to the internal threaded hole through the two external threads thereon.

[0010] Furthermore, an internal thread groove is provided in the middle of the top of the column, the inner diameter of the internal thread groove is larger than the inner diameter of the liquid outlet channel, and the internal thread groove is sealed and threadedly connected to an external thread one.

[0011] Furthermore, the depth of the internal thread groove is equal to the length of the external thread.

[0012] Furthermore, the pitch of the second external thread is the same as the pitch of the internal thread groove and the first external thread.

[0013] Furthermore, when the external thread is completely threadedly connected with the internal thread groove, the bottom end of the column is still located outside the bottom end of the groove body.

[0014] Furthermore, a plug-in interface is provided in the middle of the bottom end of the column, the inner diameter of the plug-in interface is larger than the inner diameter of the liquid outlet channel, and the syringe interface is detachably plugged into the plug-in interface.

[0015] Furthermore, the puncture needle, water storage tank and liquid extraction port are all made of hard plastic.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] By piercing the needle into the solvent bag (bottle), the liquid flows into the needle body and flows out through the hollow groove and accumulates in the water storage cavity in the groove body; the interface of the syringe is connected to the liquid extraction port and rotated counterclockwise, the column and the puncture needle are separated, and the water storage cavity inside the groove body is connected to the outside, and the syringe can be used to continuously extract the liquid in the solvent bag (bottle) and the water storage cavity; after the liquid extraction is completed, rotate clockwise again, the internal thread groove at the top of the column is threadedly connected to the external thread again, the water storage cavity is isolated from the outside, and the liquid cannot flow out through the column, thereby achieving the purpose of airtightness; thus, each bag of solvent can be used for multiple solution extraction with the help of this product, and the number of punctures is reduced, thereby reducing the generation of infusion particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 It is a cross-sectional view of the puncture needle in the utility model;

[0021] Figure 4 It is a cross-sectional view of the water storage tank in the utility model;

[0022] Figure 5 It is a cross-sectional view of the liquid extraction port in the utility model.

[0023] The numbers in the attached drawings are: 1-puncture needle, 1.1-needle body, 1.2-hollow groove, 1.3-external thread one, 2-water storage tank, 2.1-tank body, 2.2-internal thread hole, 3-liquid extraction port, 3.1-column, 3.2-internal thread groove, 3.3-external thread two, 4-syringe interface. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] See also Figures 1 to 5 As shown, a medical liquid extraction interface comprises: a puncture needle 1, a water storage tank 2 and a liquid extraction port 3. A water storage cavity is opened inside the water storage tank 2. The puncture needle 1 passes through the water storage cavity from bottom to top to the top of the water storage tank 2. The puncture needle 1 is also fixedly connected to the water storage tank 2. The puncture needle 1 is located on the lower side wall of the water storage cavity and is evenly provided with a plurality of hollow grooves 1.2. The bottom of the puncture needle 1 is closed, and the liquid extraction port 3 is a hollow cylindrical structure. The liquid extraction port 3 passes through and is threadedly connected to the bottom end of the water storage tank 2. The top end of the liquid extraction port 3 can also be detachably sealed and threadedly connected to the side wall of the puncture needle 1 near the bottom. The bottom of the liquid extraction port 3 is detachably plugged with a syringe interface 4.

[0026] In this embodiment, the puncture needle 1 also includes: a needle body 1.1, the bottom of the needle body 1.1 is closed and a liquid extraction channel is opened inside, a plurality of hollow grooves 1.2 are evenly opened on the lower side wall of the needle body 1.1 for connecting the liquid extraction channel and the water storage chamber, and an external thread 1.3 is opened on the side wall of the needle body 1.1 near the bottom.

[0027] In this embodiment, the water storage tank 2 includes: a tank body 2.1, a water storage cavity is arranged inside the tank body 2.1, a through connection hole is opened in the middle of the top of the tank body 2.1, and the middle of the outer wall of the needle body 1.1 passes through and is fixedly connected in the through connection hole.

[0028] In this embodiment, an internal threaded hole 2.2 connected to the water storage chamber is provided in the middle of the bottom end of the trough body 2.1, and the liquid extraction port 3 includes: a column 3.1, a liquid outlet channel running from bottom to top is provided inside the column 3.1, and an external thread 2 3.3 is provided on the outer wall of the column 3.1. The column 3.1 is threadedly connected to the internal threaded hole 2.2 through the external thread 2 3.3 thereon, and the threaded connection between the column 3.1 and the trough body 2.1 has good sealing performance.

[0029] In this embodiment, an internal thread groove 3.2 is provided in the middle of the top of the column 3.1, the inner diameter of the internal thread groove 3.2 is larger than the inner diameter of the liquid outlet channel, and the internal thread groove 3.2 is sealingly threadedly connected to the external thread 1.3; the depth of the internal thread groove 3.2 is equal to the length of the external thread 1.3; the pitch of the external thread 3.3 is the same as the pitch of the internal thread groove 3.2 and the external thread 1.3; by rotating the column 3.1 clockwise, it can be driven to extend from the outside to the inside, so that the internal thread groove 3.2 is threadedly connected to the external thread 1.3, thereby isolating the water storage chamber from the outside.

[0030] In this embodiment, when the external thread 1.3 is completely threadedly connected with the internal thread groove 3.2, the bottom end of the column 3.1 is still located outside the bottom end of the groove body 2.1.

[0031] In this embodiment, an insertion port is provided in the middle of the bottom end of the column 3.1, the inner diameter of the insertion port is larger than the inner diameter of the liquid outlet channel, and the syringe port 4 is detachably plugged into the insertion port.

[0032] In this embodiment, the puncture needle 1, the water storage tank 2 and the liquid extraction port 3 are all made of hard plastic material, and the manufacturing cost is low.

[0033] Instructions for use: When in use, first insert the needle body 1.1 into the solvent bag (bottle), and the liquid flows into the needle body 1.1 and flows out through the hollow groove 1.2 and accumulates in the water storage cavity in the groove body 2.1; connect the interface of the syringe with the liquid extraction port 3 and rotate counterclockwise, the column 3.1 and the puncture needle 1 are separated, and the water storage cavity inside the groove body 2.1 is connected to the outside, and the syringe can be used to continuously extract the liquid in the solvent bag (bottle) and the water storage cavity; after the liquid extraction is completed, rotate clockwise again, and the internal thread groove 3.2 at the top of the column 3.1 is again connected to the external thread 1.3, the water storage cavity is isolated from the outside, and the liquid cannot flow out through the column, so as to achieve the purpose of sealing; thus, each bag of solvent can be used for multiple solution extraction with the help of this product, and the number of punctures is reduced, thereby reducing the generation of infusion particles.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top / bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0035] The above description is only a preferred embodiment of the utility model and does not constitute any form of limitation to the utility model. Any technician familiar with the profession, without departing from the scope of the technical solution of the utility model and based on the technical essence of the utility model, any simple modification, equivalent replacement and improvement made to the above embodiment shall still fall within the scope of protection of the technical solution of the utility model.

Claims

1. A medical liquid extraction interface, characterized in that: include: A puncture needle (1), a water storage tank (2) and a liquid extraction port (3) are provided. A water storage chamber is provided inside the water storage tank (2). The puncture needle (1) passes through the water storage chamber from bottom to top to the top of the water storage tank (2). The puncture needle (1) is also fixedly connected to the water storage tank (2). The puncture needle (1) is located on the lower side wall of the water storage chamber and is evenly provided with a plurality of hollow grooves (1.2). The bottom of the puncture needle (1) is closed. The liquid extraction port (3) is a hollow cylindrical structure. The liquid extraction port (3) passes through and is threadedly connected to the bottom end of the water storage tank (2). The top end of the liquid extraction port (3) can also be detachably sealed and threadedly connected to the side wall of the puncture needle (1) near the bottom. The bottom of the liquid extraction port (3) is detachably plugged with a syringe interface (4).

2. A medical liquid extraction interface according to claim 1, characterized in that: The puncture needle (1) further comprises: a needle body (1.1), the bottom of the needle body (1.1) being closed and having a liquid extraction channel therein, a plurality of hollow grooves (1.2) being evenly arranged on the lower side wall of the needle body (1.1) for connecting the liquid extraction channel and the water storage chamber, and an external thread (1.3) being arranged on the side wall of the needle body (1.1) near the bottom.

3. A medical liquid extraction interface according to claim 2, characterized in that: The water storage tank (2) comprises a tank body (2.1), a water storage cavity is provided inside the tank body (2.1), a through-connection hole is provided in the middle of the top end of the tank body (2.1), and the middle of the outer wall of the needle body (1.1) penetrates and is fixedly connected to the through-connection hole.

4. A medical liquid extraction interface according to claim 3, characterized in that: An internal threaded hole (2.2) communicating with the water storage chamber is provided at the middle of the bottom end of the trough body (2.1). The liquid extraction port (3) comprises a column (3.1), a liquid outlet passage penetrating from bottom to top is provided inside the column (3.1), a second external thread (3.3) is provided on the outer wall of the column (3.1), and the column (3.1) is threadedly connected to the internal threaded hole (2.2) via the second external thread (3.3) thereon.

5. The medical liquid extraction interface according to claim 4, characterized in that: An internal thread groove (3.2) is provided in the middle of the top of the column (3.1), the inner diameter of the internal thread groove (3.2) is larger than the inner diameter of the liquid outlet channel, and the internal thread groove (3.2) is sealed and threadedly connected to the external thread one (1.3).

6. The medical liquid extraction interface according to claim 5, characterized in that: The depth of the internal thread groove (3.2) is equal to the length of the external thread (1.3).

7. The medical liquid extraction interface according to claim 5, characterized in that: The pitch of the second external thread (3.3) is the same as the pitch of the internal thread groove (3.2) and the pitch of the first external thread (1.3).

8. A medical liquid extraction interface according to claim 6 or 7, characterized in that: When the external thread 1 (1.3) is completely threadedly connected to the internal thread groove (3.2), the bottom end of the column (3.1) is still located outside the bottom end of the groove body (2.1).

9. The medical liquid extraction interface according to claim 4, characterized in that: An inserting port is provided in the middle of the bottom end of the column (3.1), the inner diameter of the inserting port being larger than the inner diameter of the liquid outlet channel, and the syringe port (4) is detachably inserted into the inserting port.

10. The medical liquid extraction interface according to claim 1, characterized in that: The puncture needle (1), the water storage tank (2) and the liquid extraction port (3) are all made of hard plastic.

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