Duplex medicine mixing three-way connecting device

Abstract

The utility model relates to a duplex medicine mixing three-way connecting device which comprises a first medicine liquid pipe and a second medicine liquid pipe, the liquid outlet end of the first medicine liquid pipe and the liquid outlet end of the second medicine liquid pipe are connected to a drainage column, a first channel is arranged in the first medicine liquid pipe, and a second channel is arranged in the second medicine liquid pipe. The medicine outlet ends of the first channel and the second channel extend to the end face of the medicine outlet end of the drainage column to form a liquid outlet, the first channel and the second channel are distributed in the drainage column in a crossed mode, the drainage column is connected with a liquid mixing head, and a liquid mixing cavity is formed between the liquid mixing head and the drainage column. The liquid outlet of the first channel and the liquid outlet of the second channel are communicated with the liquid mixing cavity so that liquid medicine can be mixed in the liquid mixing cavity, the liquid mixing head is provided with a liquid outlet through groove communicated with the liquid mixing cavity, and the three-way connecting device is good in liquid medicine mixing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of drug mixing devices, in particular to a double drug mixing three-way connection device. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] With the continuous development of medical technology and the continuous improvement of treatment methods in the medical industry, the demand for dual-liquid mixing devices in clinical practice is increasing. Currently, the commonly used dual-liquid mixing devices on the market mainly consist of a syringe, a dual-frame, and a fixed bracket. The two-component solution is mixed at the three-way connection through the pushing action of the syringe. Since there is insufficient space for the two components to fully mix, this can easily cause the liquid injected into the tissue to not be completely mixed evenly, and ultimately fail to achieve the therapeutic effect. In addition, during the pushing process of the syringe, the liquid will generate a certain amount of pressure. If the three-way connection device is not sealed well, it is easy to cause drug leakage, resulting in adverse consequences. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a double-mixing three-way connection device, which has a good mixing effect of the two-component liquid medicine and good sealing performance and will not cause drug leakage.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An embodiment of the utility model provides a double-drug mixing three-way connection device, including a first drug liquid tube and a second drug liquid tube, the liquid outlet ends of the first drug liquid tube and the second drug liquid tube are connected to a drainage column, a first channel is provided in the first drug liquid tube, and a second channel is provided in the second drug liquid tube, the drug outlet ends of the first channel and the second channel extend to the drug outlet end surface of the drainage column to form a liquid outlet, the first channel and the second channel are cross-distributed in the drainage column, the drainage column is connected to a liquid mixing head, a liquid mixing cavity is formed between the liquid mixing head and the drainage column, the drug outlets of the first channel and the second channel are connected to the liquid mixing cavity so that the drug liquids are mixed in the liquid mixing cavity, and the liquid mixing head is provided with a liquid outlet through-groove connected to the liquid mixing cavity.

[0007] Optionally, the end of the liquid mixing head for connecting to the drainage column is provided with an internal threaded hole, the outer periphery of the drainage column is provided with an external threaded structure, and the drainage column is threadedly connected to the liquid mixing head through the external threaded structure and the internal threaded hole.

[0008] Optionally, the drainage column is a tapered column, and correspondingly, the internal threaded hole is a tapered internal threaded hole.

[0009] Optionally, the cross-sectional area of ​​the liquid mixing cavity is larger than the cross-sectional area of ​​the liquid outlet through-channel.

[0010] Optionally, the drug inlet end of the first drug liquid tube is provided with a first Luer connector, and the first Luer connector is connected to the drug inlet end of the first channel.

[0011] Optionally, a second Luer connector is provided at the drug inlet end of the second drug liquid tube, and the second Luer connector is connected to the drug inlet end of the second channel.

[0012] Optionally, the first liquid outlet formed by the first channel at the end surface of the drug outlet end of the drainage column and the second liquid outlet formed by the second channel at the end surface of the drug outlet end of the drainage column are symmetrically arranged relative to the center of the drainage column, and along the radial direction of the drainage column, the first liquid outlet and the second liquid outlet are arranged at an interval of 180°.

[0013] Optionally, a conical block is provided at the center of the end surface of the medicine outlet end of the drainage column, and the end of the conical block with a larger area is fixed to the end surface of the medicine outlet end of the drainage column.

[0014] Optionally, a Luer thread fixed joint is provided on the periphery of the liquid outlet end of the liquid mixing head.

[0015] Optionally, the Luer thread fixed connector is fixed to the liquid outlet end of the mixing head by a one-way buckle.

[0016] The beneficial effects of the above utility model are as follows:

[0017] 1. In the three-way connection device of the present invention, the first channel and the second channel intersect in the drainage column to form a liquid outlet on the end face of the drug outlet end of the drainage column. After the drainage column is connected to the mixing head, a mixing liquid chamber connected to the liquid outlet is formed. The first channel and the second channel are cross-distributed separately in the drainage column. When the entire device is used horizontally, the liquid medicine in the first channel and the second channel flows into the mixing liquid chamber to form alternating mixing, thereby improving the mixing effect of the liquid medicine and ensuring the uniformity and sufficiency of the mixing of the liquid medicine.

[0018] 2. In the three-way connection device of the present invention, the drainage column adopts a conical structure, and the mixing head is provided with a conical internal threaded hole. After the drainage column and the mixing head are threadedly connected, a rotary sealing connection can be achieved, which has good sealing performance and avoids leakage of the liquid medicine.

[0019] 3. In the three-way connection device of the present invention, a tapered block is provided at the center of the medicine outlet end face of the drainage column to prevent air from gathering there and reduce bubbles in the mixed medicine solution.

[0020] 4. In the three-way connection device of the present invention, the cross-sectional area of ​​the mixing chamber is larger than the cross-sectional area of ​​the liquid outlet through-channel. After the liquid medicine enters the liquid outlet through-channel, the liquid outlet through-channel exerts an extrusion effect on the liquid medicine, thereby facilitating uniform mixing of the liquid medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation on this application.

[0022] Figure 1 This is a front view of the overall structure of Example 1 of the utility model;

[0023] Figure 2 This is a cross-sectional view of the overall structure of Example 1 of the present utility model;

[0024] Figure 3 This utility model Figure 2 A partial enlarged view of point C in the middle;

[0025] Figure 4 This is a schematic diagram of the three-way pipe structure of Example 1 of the present utility model;

[0026] Figure 5 This is a front view of a three-way pipe according to embodiment 1 of the present invention;

[0027] Figure 6 This is a bottom view of the three-way pipe of Example 1 of the present utility model;

[0028] Figure 7 This is a top view of a three-way pipe according to embodiment 1 of the present invention;

[0029] Figure 8 This utility model Figure 6 A-direction cross-sectional diagram;

[0030] Figure 9 This utility model Figure 6 Schematic diagram of the B-direction cross section;

[0031] Figure 10 This is a front view of the structure of the liquid mixing head of Example 1 of the present utility model;

[0032] Figure 11 This is a cross-sectional view of the liquid mixing head of Example 1 of the present utility model;

[0033] Figure 12 This is a top view of the overall structure of Example 1 of the present utility model;

[0034] Among them, 1. Tee pipe, 2. Mixing head;

[0035] 101. First Luer connector, 102. Second Luer connector, 103. First channel, 104. Second channel, 105. Drainage column, 106. Conical block, 107. First liquid inlet, 108. Second liquid inlet, 109. First liquid outlet, 110. Second liquid outlet;

[0036] 201. Mixing tube, 202. Luer thread fixed connector, 203. Anti-slip groove, 204. Internal thread hole, 205. Luer male connector, 206. Liquid outlet slot, 207. One-way buckle. DETAILED DESCRIPTION

[0037] Example 1

[0038] This embodiment provides a dual-drug mixing three-way connection device, such as Figure 1-Figure 3 As shown, it includes a three-way pipe 1 and a mixing head 2. The three-way pipe 1 includes a first liquid medicine pipe and a second liquid medicine pipe. One end of the first liquid medicine pipe and the second liquid medicine pipe serves as a medicine inlet end, and the other end is connected to the drainage column 105. The drainage column 105 is connected to the mixing head 2, and the mixing head 2 is used to deliver the mixed liquid medicine.

[0039] like Figure 4-Figure 9 As shown, the first liquid medicine tube and the second liquid medicine tube are distributed in a V shape. Furthermore, a reinforcing plate is provided between the first liquid medicine tube and the second liquid medicine tube to increase the structural strength of the entire double-mixing three-way connection device. A first channel 103 for the circulation of liquid medicine is provided in the first liquid medicine tube, and a second channel 104 for the circulation of liquid medicine is provided in the second liquid medicine tube.

[0040] The drug inlet end of the first channel 103 is connected to the first Luer connector 101 provided at the drug inlet end of the first drug liquid tube to form a first liquid inlet 107. The first drug liquid tube can be connected to the syringe through the first Luer connector 101. The drug inlet end of the second channel 104 is connected to the second Luer connector 102 provided at the drug inlet end of the second drug liquid tube to form a second liquid inlet 108. The second drug liquid tube can be connected to the syringe through the second Luer connector 102.

[0041] The drug outlet end of the first channel 103 extends to the drug outlet end face of the drainage column to form a first liquid outlet 109, and the drug outlet end of the second channel 104 extends to the drug outlet end face of the drainage column to form a second liquid outlet 110. The first channel 103 and the second channel 104 are cross-arranged in the drainage column 105, but the first channel 103 and the second channel 104 are separated, that is, the first channel 103 and the second channel 104 are not connected.

[0042] The first liquid outlet 109 and the second liquid outlet 110 are respectively located on both sides of the center of the end surface of the drug outlet end of the drainage column 105, and the first liquid outlet 109 and the second liquid outlet 110 are symmetrically arranged relative to the center of the end surface of the drug outlet end of the drainage column 105. Along the circumferential direction of the end surface of the drug outlet end of the drainage column 105, the first liquid outlet 109 and the second liquid outlet 110 are arranged 180° apart, and the distance between the first liquid outlet 109 and the second liquid outlet 110 and the center of the end surface of the drug outlet end of the drainage column 105 is equal.

[0043] The outer cylindrical surface of the drainage column 105 is provided with an external thread structure, and correspondingly, the medicine inlet end of the liquid mixing head 2 is provided with an internal thread hole matching the external thread structure.

[0044] like Figure 10-11 As shown, the drug inlet end of the mixing head 2 is threadedly fixedly connected to the drainage column 105. The mixing head 2 includes a mixing tube 201 and a Luer male connector 205 coaxially fixed to the bottom end of the mixing tube 201. The top end of the mixing tube 201 is provided with an internal threaded hole 204 and is threadedly connected to the drainage column 105.

[0045] In this embodiment, there is a set distance between the end surface of the drug outlet end of the drainage column 105 and the bottom hole surface of the internal threaded hole so that a liquid mixing chamber 301 is formed between the drainage column and the liquid mixing head 2. The first channel 103 is connected to the liquid mixing chamber 301 through the first liquid outlet 109, and the second channel 104 is connected to the liquid mixing chamber 301 through the second liquid outlet 110. The liquid medicine can enter the liquid mixing chamber 301 through the first channel 103 and the second channel 104 to form a mixture. Figure 12 As shown, the entire liquid mixing three-way connection device is used horizontally. Due to the effect of gravity, the liquids flowing out of the first liquid outlet 109 and the second liquid outlet 110 all flow to point A. Since the first liquid outlet 109 and the second liquid outlet 110 are at different distances from point A, the liquids flowing out of the first liquid outlet 109 and the second liquid outlet 110 will be alternately mixed. In this embodiment, the two liquid medicines are mixed in the liquid mixing chamber 301, which improves the mixing effect of the liquid medicines and ensures the mixing uniformity and sufficiency of the liquid medicines.

[0046] Furthermore, a conical block 106 is provided at the center position of the end face of the medicine outlet of the drainage column 105, and the end of the conical block 106 with a larger area is fixedly connected to the end face of the medicine outlet of the drainage column 105. By providing the conical block 106, air can be prevented from gathering here, thereby reducing bubbles in the mixed medicine solution.

[0047] The liquid mixing head 2 is provided with a liquid outlet through-groove 206, which is coaxially arranged with the liquid mixing head 2. The medicine inlet end of the liquid outlet through-groove 206 extends to the bottom surface of the internal threaded hole 204, and the medicine outlet end extends to the medicine outlet end surface of the liquid mixing head 2. The cross-sectional area of ​​the liquid outlet through-groove 206 is smaller than the cross-sectional area of ​​the liquid mixing cavity 301, that is, the diameter of the liquid outlet through-groove 206 is smaller than the diameter of the liquid mixing cavity 301. After the liquid medicine enters the liquid outlet through-groove 206 from the liquid mixing cavity, the liquid outlet through-groove 206 forms an extrusion effect on the liquid medicine, which facilitates uniform mixing of the liquid medicine.

[0048] Furthermore, in order to improve the sealing performance of the connection between the drainage column 105 and the mixing head 2, the drainage column 105 adopts a conical structure, and accordingly, the internal threaded hole 204 at the top of the mixing tube 201 adopts a conical internal threaded hole. Preferably, the taper of the drainage column 105 and the internal threaded hole 204 is 6%. After the drainage column 105 and the mixing head 2 are threadedly connected, a rotary sealing connection can be achieved, which has good sealing performance and avoids leakage of the liquid medicine.

[0049] The Luer male connector 205 is connected to the Luer thread fixing connector 202 by a one-way buckle 207. After the Luer thread fixing connector 202 is connected to the Luer male connector 205, it can be locked together with other Luer components.

[0050] The one-way buckle 207 adopts a card block that is sleeved and fixed on the outer periphery of the Luer male connector 205. The end face of the drug outlet end of the card block is an inclined surface that forms a set acute angle with the axis of the liquid mixing head 2. Along the radial direction of the liquid mixing head 2, the distance between the outer edge of the inclined surface and the end face of the liquid outlet end of the liquid mixing head 2 is greater than the distance between the inner edge and the end face of the liquid outlet end of the liquid mixing head 2. The end face of the drug inlet end of the card block is perpendicular to the axis of the liquid mixing head 2.

[0051] Using the one-way buckle 207, the Luer thread fixed connector 202 is pushed in along the drug outlet end of the mixing head 2 toward the drug inlet end, which can squeeze the one-way buckle 207 until the Luer thread fixed connector 202 contacts the end face of the drug inlet end of the one-way buckle 207. At this time, the Luer thread fixed connector 202 is clamped and fixed.

[0052] The Luer thread fixed connector 202 is a standard component and can be adapted from an existing structure. The specific structure thereof will not be described in detail herein.

[0053] Furthermore, in order to facilitate the staff to thread the mixing head 2 and the drainage column 105, the outer peripheral surface of the drug inlet end of the mixing head 2 is provided with anti-slip grooves 203, which makes it easier for the staff to rotate the mixing head 2 and thus thread the mixing head 2 onto the drainage column 105.

[0054] When the three-way connection device of this embodiment is used, the first liquid medicine is injected into the first channel 103 through a syringe, and the second liquid medicine is injected into the second channel 104 through a syringe. The first liquid medicine enters the mixing chamber 301 through the first channel 103, and the second liquid medicine enters the mixing chamber 301 through the second channel 104. The first liquid medicine and the second liquid medicine are mixed in the mixing chamber 301, and the mixed liquid medicines are delivered through the liquid outlet through-groove 206.

[0055] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A double-drug mixed three-way connection device, characterized in that: The invention comprises a first medicine liquid tube and a second medicine liquid tube, wherein the liquid outlet ends of the first medicine liquid tube and the second medicine liquid tube are connected to the drainage column, a first channel is provided in the first medicine liquid tube, and a second channel is provided in the second medicine liquid tube, the medicine outlet ends of the first channel and the second channel extend to the medicine outlet end surface of the drainage column to form a liquid outlet, the first channel and the second channel are cross-distributed and distributed separately in the drainage column, the drainage column is connected to a liquid mixing head, a liquid mixing cavity is formed between the liquid mixing head and the drainage column, the medicine outlets of the first channel and the second channel are connected to the liquid mixing cavity so that the medicine liquid is mixed in the liquid mixing cavity, and the liquid mixing head is provided with a liquid outlet through-groove connected to the liquid mixing cavity.

2. A dual-drug mixed three-way connection device according to claim 1, characterized in that: The end of the liquid mixing head for connecting with the drainage column is provided with an internal threaded hole, the outer periphery of the drainage column is provided with an external threaded structure, and the drainage column is threadedly connected to the liquid mixing head through the external threaded structure and the internal threaded hole.

3. A dual-drug mixed three-way connection device according to claim 2, characterized in that: The drainage column is a tapered column, and correspondingly, the internal threaded hole is a tapered internal threaded hole.

4. A dual-drug mixed three-way connection device according to claim 1, characterized in that: The cross-sectional area of ​​the liquid mixing cavity is larger than the cross-sectional area of ​​the liquid outlet through-channel.

5. A dual-drug mixed three-way connection device according to claim 1, characterized in that: The drug inlet end of the first drug liquid tube is provided with a first Luer connector, and the first Luer connector is communicated with the drug inlet end of the first channel.

6. A dual-drug mixed three-way connection device according to claim 1, characterized in that: The drug inlet end of the second drug liquid tube is provided with a second Luer connector, and the second Luer connector is communicated with the drug inlet end of the second channel.

7. A dual-drug mixed three-way connection device according to claim 1, characterized in that: The first liquid outlet formed by the first channel at the end surface of the drainage column and the second liquid outlet formed by the second channel at the end surface of the drainage column are symmetrically arranged relative to the center of the drainage column, and along the radial direction of the drainage column, the first liquid outlet and the second liquid outlet are arranged at an interval of 180°.

8. A dual-drug mixed three-way connection device according to claim 1, characterized in that: A conical block is provided at the center of the end surface of the medicine outlet end of the drainage column, and the end of the conical block with a larger area is fixed to the end surface of the medicine outlet end of the drainage column.

9. A dual-drug mixed three-way connection device according to claim 1, characterized in that: A Luer thread fixed joint is provided on the outer periphery of the liquid outlet end of the liquid mixing head.

10. A dual-drug mixed three-way connection device according to claim 9, characterized in that: The Luer thread fixed joint is clamped and fixed to the liquid outlet end of the mixing head through a one-way buckle.

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