Multifunctional medical three-way valve extension tube

Abstract

The utility model discloses a multifunctional medical three-way valve extension tube, which relates to the technical field of medical three-way valve extension tubes, aims to solve the technical problem that the liquid flow regulation of the current medical three-way valve extension tube is not easy to accurately operate, and comprises a valve body connected with a tube main body and a valve core regulating part used for regulating the size of the flow path in the valve body, a limiting piece is fixedly arranged in the center of the top of the valve body, and the limiting piece is located on the outer side of the rod wall of the valve element adjusting piece. And meanwhile, the clamping effect can be achieved through cooperation of a V-shaped clamping groove and a limiting protruding strip on the fixing part and a positioning groove and a V-shaped protruding block on the positioning piece, and therefore the rotating angle of the valve element adjusting piece can be controlled. The utility model has the advantages that the valve core adjusting piece rotates to adjust the angle of the valve core conveniently, the deviation probability of the valve core is reduced, and the infusion flow rate is quantitatively controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of medical three-way valve extension tubes, and more specifically to a multifunctional medical three-way valve extension tube. Background Art

[0002] The medical three-way valve extension tube is a specially designed accessory for medical infusion systems, which allows medical staff to extend or adjust the liquid delivery path through simple operations. This accessory is particularly suitable for situations where precise control of drug delivery or arterial pressure measurement is required.

[0003] The valve core adjustment structure on the existing medical three-way valve extension tube generally completes the switching of the connection state between the pipelines by rotation, but there is a lack of a structure to limit the adjustment state between the valve core adjustment structure and the valve body, which makes it difficult to accurately operate the liquid flow adjustment state. Repeated fine-tuning is too time-consuming and easily leads to a waste of adjustment time. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art, meet practical needs, and provide a multifunctional medical three-way valve extension tube to solve the technical problem that the current medical three-way valve extension tube is difficult to accurately operate in regulating the liquid flow.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a multifunctional medical three-way valve extension tube, comprising a valve body connected to a pipe fitting body and a valve core adjusting member for adjusting the flow path size in the valve body, a limiter is fixedly provided at the top center of the valve body, and the limiter is located outside the stem wall of the valve core adjusting member, a positioning member that can move up and down is installed outside the stem wall of the valve core adjusting member, and the positioning member is meshedly connected with the limiter, and a spring is fixedly connected between the top of the valve core adjusting member and the upper surface of the positioning member;

[0006] The limiting member comprises an annular fixing portion, a plurality of V-shaped grooves are formed on the upper surface of the fixing portion, and the side angles of the V-shaped grooves are arc angles, and a limiting convex strip is integrally formed between two adjacent V-shaped grooves;

[0007] A positioning groove corresponding to the limiting convex strip is formed at the bottom of the positioning member, and a V-shaped convex block combined with the V-shaped slot is integrally formed between two adjacent positioning grooves.

[0008] The utility model can increase the resistance of the valve core adjusting member to rotate by designing the limit piece and the positioning piece structure. At the same time, the cooperation of the V-shaped groove and the limit convex strip on the fixing part and the positioning groove and the V-shaped convex block on the positioning member can achieve the effect of locking. In this way, the rotation angle of the valve core adjusting member can be controlled, the size of the flow path can be adjusted, and the flow rate of the medicine liquid in the valve body can be quantitatively controlled. With the support of the spring, the positioning member can automatically reset after the extrusion force fails, and keep in close fit with the limit piece to achieve the effect of locking. Such structural cooperation can keep the position stable during the infusion process, thereby improving the effect of controlling the flow rate of the medicine liquid.

[0009] Preferably, two symmetrical movable grooves are longitudinally opened on the stem wall of the valve core regulating member, and two symmetrical movable clamping blocks are fixedly provided on the inner wall of the positioning member, and the two movable clamping blocks are movably connected with the two movable grooves respectively.

[0010] Preferably, the bottom side surface of the V-shaped groove is an arc-shaped concave surface, the upper end surface of the limiting convex strip is an arc-shaped convex surface, and the arc-shaped concave surface and the arc-shaped convex surface are both inclined downward toward one side of the outer wall of the fixing portion.

[0011] Preferably, the top groove surface of the positioning groove and the bottom side end of the V-shaped protrusion are both inclined downward toward the outer wall of the positioning member.

[0012] Preferably, a first blocking ring is fixedly provided on the lower side surface of the top of the valve core adjusting member, and the first blocking ring is located outside the spring, and a second blocking ring that fits with the outer wall of the first blocking ring is fixedly provided on the top of the positioning member.

[0013] Preferably, an annular groove is provided at the top of the valve body, an index ring is fixedly provided inside the annular groove, and a plurality of index bumps corresponding to index positions are provided in an annular array on the upper surface of the index ring.

[0014] Preferably, an indicator mark is fixedly provided on the outer wall of the positioning member, and the indicator mark is located above the index protrusion.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model can increase the resistance to the rotation of the valve core adjusting member by designing the coordination of the limit member and the positioning member structure. At the same time, the coordination of the V-shaped groove and the limit convex strip on the fixed part and the positioning groove and the V-shaped convex block on the positioning member can achieve the effect of locking. In this way, the rotation angle of the valve core adjusting member can be controlled, the size of the flow path can be adjusted, and the flow rate of the medicine liquid in the valve body can be quantitatively controlled. With the support of the spring, the positioning member can be automatically reset after the extrusion force fails, and keep in close fit with the limit member to achieve the effect of locking. Such structural coordination can maintain a stable position during the infusion process, thereby improving the effect of controlling the flow rate of the medicine liquid.

[0017] 2. The utility model can improve the smoothness of movement when rotating the valve core adjusting member by designing the inclined joint between the positioning member and the limit member. At the same time, the inclined fit can enhance the stability of the connection, improve the effect of structural fit, and facilitate use. At the same time, the structural design is simple and easy to assemble and manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a schematic diagram of the partial structure of the utility model;

[0020] Figure 3 It is a partial structural decomposition schematic diagram of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the position limiting member in the utility model;

[0022] Figure 5 It is a bottom view of the structure of the positioning member in the utility model.

[0023] Explanation of the numbers in the figure: 1. valve body; 101. annular groove; 102. index ring; 103. index protrusion; 2. valve core adjustment member; 201. movable groove; 202. spring; 203. first shielding ring; 3. limiting member; 301. fixing portion; 302. V-shaped groove; 303. limiting convex strip; 4. positioning member; 401. positioning groove; 402. V-shaped protrusion; 403. movable block; 404. indicator mark; 405. second shielding ring. DETAILED DESCRIPTION

[0024] like Figures 1 to 5 As shown, the multifunctional medical three-way valve extension tube involved in the utility model comprises a valve body connected to a pipe fitting body and a valve core adjusting member for adjusting the size of the flow path in the valve body, a limit piece 3 is fixedly provided at the top center of the valve body 1, and the limit piece 3 is located on the outside of the rod wall of the valve core adjusting member 2, a positioning member 4 which can move up and down is installed on the outside of the rod wall of the valve core adjusting member 2, and the positioning member 4 is meshed and connected with the limit piece 3, and a spring 202 is fixedly connected between the top of the valve core adjusting member 2 and the upper surface of the positioning member 4; the combination of the limit piece 3 and the positioning member 4 can enhance the limiting effect of the valve core adjusting member 2, and improve the rotation resistance, the setting of the spring 202 can shrink when under pressure to form an elastic force, so that when the positioning member 4 loses pressure, it can be reset by the elastic force, maintain the effect of the combination with the limit piece 3, achieve the effect of fixed-angle rotation adjustment, and facilitate the control of the size of the valve core flow path.

[0025] The limiting member 3 includes an annular fixing portion 301, and a plurality of V-shaped grooves 302 are provided on the upper surface of the fixing portion 301, and the side angle of the V-shaped groove 302 is an arc angle, and a limiting convex strip 303 is integrally formed between two adjacent V-shaped grooves 302; through the arrangement of the V-shaped grooves 302 and the limiting convex strips 303, a wavy groove can be formed on the upper surface of the fixing portion 301, and is equally divided on the surface of the fixing portion 301.

[0026] The bottom of the positioning member 4 is provided with a positioning groove 401 corresponding to the limiting convex strip 303, and a V-shaped protrusion 402 combined with the V-shaped slot 302 is integrally formed between two adjacent positioning grooves 401; such a configuration facilitates engagement and connection with the limiting member 3, thereby improving the limiting effect of the combination.

[0027] In an embodiment of the utility model, two symmetrical movable grooves 201 are longitudinally opened on the rod wall of the valve core adjustment member 2, and two symmetrical movable blocks 403 are fixedly provided on the inner wall of the positioning member 4, and the two movable blocks 403 are movably combined with the two movable grooves 201 respectively; through the cooperation between the movable blocks 403 and the movable grooves 201, the positioning member 4 can be conveniently moved up and down to achieve the effect of movable adjustment.

[0028] In an embodiment of the utility model, the bottom side surface of the V-shaped slot 302 is an arc-shaped concave surface, the upper end surface of the limiting protrusion 303 is an arc-shaped convex surface, and both the arc-shaped concave surface and the arc-shaped convex surface are inclined downward toward one side of the outer wall of the fixing part 301; the positioning effect can be improved by inclining to one side.

[0029] In an embodiment of the utility model, the top groove surface of the positioning groove 401 and the bottom side end of the V-shaped protrusion 402 are both inclined downward toward the outer wall of the positioning member 4; such a setting can be adapted to the inclined surface on the limit member 3, thereby improving the smoothness of the extrusion movement and reducing the impact on the rotation of the valve core adjustment member 2.

[0030] In an embodiment of the utility model, a first blocking ring 203 is fixedly provided on the lower side surface of the top of the valve core adjustment member 2, and the first blocking ring 203 is located on the outside of the spring 202, and a second blocking ring 405 that is in contact with the outer wall of the first blocking ring 203 is fixedly provided on the top of the positioning member 4; the spring 202 can be blocked inside by the cooperation between the first blocking ring 203 and the second blocking ring 405, and the contact and combination facilitate the second blocking ring 405 to move up and down with the positioning member 4.

[0031] In an embodiment of the utility model, an annular groove 101 is provided on the top of the valve body 1, an index ring 102 is fixedly provided inside the annular groove 101, and a plurality of index protrusions 103 corresponding to the index positions are provided in an annular array on the upper surface of the index ring 102; the setting position of the fixed index ring 102 can be limited by the annular groove 101, so as to facilitate the observation of the rotation angle of the valve core adjustment member 2.

[0032] In the embodiment of the utility model, an indicator mark 404 is fixedly provided on the outer wall of the positioning member 4, and the indicator mark 404 is located above the index protrusion 103; through the cooperation of the two, the convenience of angle adjustment and observation can be improved, and it is convenient to use.

[0033] Working principle: This embodiment provides a multifunctional medical three-way valve extension tube. When in use, the drug liquid connecting tube can be connected through the interfaces at both ends of the valve body 1. When it is necessary to adjust different connecting tubes to infuse liquid into the extension tube on the valve body 1, the valve core adjusting member 2 can be rotated. The rotation of the valve core adjusting member 2 can make the positioning member 4 on the outer wall rotate synchronously, so that the upper limit convex strip 303 of the limit member 3 can be squeezed to move it upward, thereby compressing the spring 202 to contract, so that the V-shaped convex block 402 on the positioning member 4 moves to the V-shaped groove 3 at the adjacent position on the limit member 3. 02, so as to complete the adjustment of a fixed angle position. In this way, the docking situation of the perforation on the valve core and the connecting pipe mouth can be controlled in turn. The diameter of the medicine flow can be adjusted at different positions to achieve the effect of flow rate control. At the same time, after completing the adjustment of one angle, the positioning member 4 and the limit member 3 can be kept in a fit state through the support of spring 202, so that it is not easy to deviate during the infusion process, and the flow rate of the medicine can be kept stable, thereby improving the use effect of the overall structure, facilitating the adjustment of different flow rates of the medicine, and being easy to use.

[0034] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A multifunctional medical three-way valve extension tube, comprising a valve body (1) connected to a pipe body and a valve core adjusting member (2) for adjusting the flow path size in the valve body (1), characterized in that: A limiter (3) is fixedly provided at the top center of the valve body (1), and the limiter (3) is located outside the stem wall of the valve core adjusting member (2). A positioning member (4) that can move up and down is installed outside the stem wall of the valve core adjusting member (2), and the positioning member (4) is meshingly connected with the limiter (3). A spring (202) is fixedly connected between the top of the valve core adjusting member (2) and the upper surface of the positioning member (4); The limiting member (3) comprises an annular fixing portion (301), a plurality of V-shaped grooves (302) are provided on the upper surface of the fixing portion (301), and the side angles of the V-shaped grooves (302) are arc angles, and a limiting convex strip (303) is integrally formed between two adjacent V-shaped grooves (302); The bottom of the positioning member (4) is provided with a positioning groove (401) corresponding to the limiting convex strip (303), and a V-shaped protrusion (402) combined with the V-shaped slot (302) is integrally formed between two adjacent positioning grooves (401).

2. The multifunctional medical three-way valve extension tube according to claim 1, characterized in that: Two symmetrical movable grooves (201) are longitudinally provided on the stem wall of the valve core regulating member (2), and two symmetrical movable clamping blocks (403) are fixedly provided on the inner wall of the positioning member (4), and the two movable clamping blocks (403) are movably coupled to the two movable grooves (201) respectively.

3. The multifunctional medical three-way valve extension tube according to claim 1, characterized in that: The bottom side surface of the V-shaped groove (302) is an arc-shaped concave surface, the upper end surface of the limiting convex strip (303) is an arc-shaped convex surface, and both the arc-shaped concave surface and the arc-shaped convex surface are arranged to be inclined downward toward one side of the outer wall of the fixing portion (301).

4. The multifunctional medical three-way valve extension tube according to claim 1, characterized in that: The top groove surface of the positioning groove (401) and the bottom side end of the V-shaped protrusion (402) are both arranged to be inclined downward toward one side of the outer wall of the positioning member (4).

5. The multifunctional medical three-way valve extension tube according to claim 1, characterized in that: A first blocking ring (203) is fixedly provided on the lower side surface of the top of the valve core adjusting member (2), and the first blocking ring (203) is located on the outside of the spring (202), and a second blocking ring (405) is fixedly provided on the top of the positioning member (4) and is in contact with the outer wall of the first blocking ring (203).

6. The multifunctional medical three-way valve extension tube according to claim 1, characterized in that: The top of the valve body (1) is provided with an annular groove (101), an index ring (102) is fixedly arranged inside the annular groove (101), and a plurality of index bumps (103) corresponding to index positions are arranged in an annular array on the upper surface of the index ring (102).

7. The multifunctional medical three-way valve extension tube according to claim 5, characterized in that: An indicator mark (404) is fixedly provided on the outer wall of the positioning member (4), and the indicator mark (404) is located above the index protrusion (103).

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