Continuous infusion micro pump front tube

Abstract

The invention discloses a continuous infusion micro pump front tube, and relates to the technical field of micro pump front tubes. Comprising a connector A, a pipeline is installed at the bottom end of the connector A, a tight ring A and a tight ring B are installed on the inner wall of the connector A, a conveying bin is installed on the outer wall of the connector A, and conveying cavities are formed in the side wall of the connector A and the interior of the tight ring A. According to the invention, through the arrangement of the top block, the abutting ring and the pressing reset assembly, slight looseness is generated at the joint of the micro pump and the front pipe, so that when the joint of the micro pump shifts in the joint A to form a gap, the joint of the micro pump can be corrected and reset at the joint A through the pressure generated by leakage of liquid medicine from the gap; the micro pump and the connector A are tightly connected again, vibration of the micro pump in the working process is avoided, the phenomenon that the connector A and the micro pump connector loosen again is avoided, and it is ensured that the micro pump connector and the connector A rapidly recover to be tightly connected after loosing.

Description

Technical Field

[0001] The invention relates to the technical field of micro pump front tubes, in particular to a continuous infusion micro pump front tube. Background Art

[0002] In clinical medicine, the treatment of many diseases requires precise control of the drug infusion rate and dosage. For example, in scenarios such as tumor chemotherapy, cardiovascular disease treatment, and critically ill patient rescue, the drug concentration and infusion rate are crucial to the treatment effect and patient safety. Traditional infusion methods often fail to meet these precise control requirements. Therefore, micropump technology came into being. Micropumps can accurately control the infusion rate and dosage of drugs to achieve precise, trace, uniform, and continuous infusion of drugs. In the development of micropump technology, the micropump front tube is an important component of the micropump infusion system. Its performance and quality directly affect the drug infusion effect and patient safety.

[0003] The front tube of the micropump is inserted into the interface of the micropump. Since the micropump will vibrate when it is working, long-term vibration will cause the interface between the micropump and the front tube to become slightly loose, which is not conducive to maintaining the tightness of the front tube of the micropump and the interface of the micropump, and may cause leakage of the drug solution. The leakage of the drug solution may change the flow rate of the drug solution in the tube. In order to maintain the same infusion speed, the micropump may automatically adjust the output pressure to try to restore the flow rate. Increasing the output pressure of the micropump may increase the looseness of the pipeline connection.

[0004] In response to the above problems, it is urgent to carry out innovative design based on the original basis. Summary of the invention

[0005] The purpose of the present invention is to provide a front tube of a continuous infusion micropump to solve the problem proposed in the above background technology that long-term vibration of the micropump during operation may cause slight loosening of the interface between the micropump and the front tube, which may cause leakage of the drug solution. The technical solution of the present invention is aimed at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a front tube of a continuous infusion micro pump, comprising a joint A, a pipeline is installed at the bottom end of the joint A, a tight ring A and a tight ring B are installed on the inner wall of the joint A, a delivery bin is installed on the outer wall of the joint A, a delivery cavity is opened in the side wall of the joint A and inside the tight ring A, a slide groove is opened in the side wall of the joint A near the top end of the delivery bin, a top block is opened in the slide groove near the top end of the delivery bin, an annular groove is opened on the inner wall of the joint A near the top end, and a pressure ring is opened in the annular groove for limited sliding;

[0007] A pressure reset component, the pressure reset component is installed in the internal conveying cavity of the tight ring A and in the chute near the top of the conveying bin in the side wall of the joint A, the pressure reset component includes a connecting plate installed in the chute near the top of the conveying bin in the side wall of the joint A, the connecting plate has a resistance platform for limited sliding inside, and also includes an extrusion block that is limited and sliding in the internal conveying cavity of the tight ring A, the resistance platform is connected to the back end of the top block, and a connecting rod is installed at the back end of the top block;

[0008] A downward pressing fastening assembly is installed on the back end of the pressing ring and the outer surface of the joint A.

[0009] Preferably, a connector B is installed at the interface at the other end of the pipeline, and a micro pump interface is inserted inside the connector A.

[0010] Preferably, the tight ring A is installed inside the joint A near the bottom area, and the tight ring B is installed in the area above the tight ring A. The surfaces of the tight ring A and the tight ring B are both provided with inclined surfaces, and the tight ring A, the tight ring B and the pressure ring are all made of natural rubber.

[0011] Preferably, the conveying cavity inside the tight ring A is in a transverse T-shape, one end of the conveying cavity inside the side wall of the connector A is connected to the transverse T-shaped conveying cavity inside the tight ring A, and the other end of the conveying cavity inside the side wall of the connector A is connected to the inner cavity of the conveying bin.

[0012] Preferably, there are six groups of conveying cavities in the side wall of the connector A and six groups of conveying cavities inside the tight ring A, and the number of the conveying bins is also six. The six groups of conveying cavities in the connector A and the tight ring A are equidistantly distributed in a circular shape inside the connector A, and the six groups of conveying bins are equidistantly distributed in a circular shape on the surface of the connector A. The conveying bins are transparent in design, and the inner wall of the conveying bins is inlaid with PH test paper.

[0013] Preferably, the top block is provided with an arc surface at one end close to the micro pump interface, and the abutment platform is composed of a group of protrusions and a group of round rods in a transverse combination, and a spring is sleeved on the surface of the round rod.

[0014] Preferably, the extrusion block is limited to slide in the transverse T-shaped vertical conveying cavity in the tight ring A, a spring is installed on the top of the extrusion block, a vertical slide groove is opened inside the pressure ring, and the top of the connecting rod is limited to slide in the vertical slide groove inside the pressure ring.

[0015] Preferably, the press-down fastening assembly includes a groove table installed on the surface of the joint A, a sleeve is vertically slid inside the groove table, a sliding rod is limitedly slid inside the sleeve, the end of the sliding rod is connected to the back end of the pressure ring, and a movable ring is vertically slid on the surface of the groove table.

[0016] Preferably, one end of the sleeve away from the slide rod is connected to the inner wall of the movable ring, a spring is installed at the bottom of the sleeve, and the bottom end of the spring is connected to the bottom of the inner wall of the groove platform.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention, by providing a top block, a pressure ring and a pressure reset component, produces a slight looseness at the interface between the micro pump and the front tube, so that when the micro pump interface is offset in the joint A to form a gap, the pressure of the liquid medicine leaking from the gap can correct and reset the micro pump interface at the joint A, so that the micro pump and the joint A are tightly connected again, avoiding the vibration of the micro pump during operation, which causes the joint A and the micro pump interface to loosen again, ensuring that the micro pump interface and the joint A quickly resume tight connection after loosening, effectively enhancing the stability of the connection, and maintaining the tight connection of the interface under vibration conditions.

[0019] 2. The present invention provides a delivery bin and a downward pressing fastening assembly. When the drug solution leaks out from the gap and enters the delivery bin, the pH test paper will change when it encounters the drug solution. The medical staff observes the change in the pH test paper and can tighten the micro pump interface and the connector A again by pressing the fastening assembly. The pH test paper can quickly respond to the leakage of the drug solution, so that the medical staff can promptly discover the leakage problem between the micro pump interface and the connector A, thereby quickly tightening the micro pump interface and the connector A again, avoiding leakage of a large amount of drug solution and reducing drug waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the main structure of the present invention from one perspective;

[0021] Figure 2 It is a schematic diagram of the partial structure of the connector A of the present invention;

[0022] Figure 3 Schematic diagram of the cross-sectional structure of the connector A of the present invention;

[0023] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0025] Figure 6 It is a schematic diagram of the explosion structure of the pressure-reset component of the present invention;

[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure at C in the middle;

[0027] Figure 8 It is a schematic diagram of the explosion structure inside the tight ring B of the present invention;

[0028] Fig. 9 It is a partial structural schematic diagram of the press-down fastening assembly of the present invention;

[0029] Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure at D in the middle;

[0030] Fig.11 It is a schematic diagram of the exploded structure of the press-down fastening assembly of the present invention;

[0031] Fig.12 For the present invention Fig.11 Schematic diagram of the enlarged structure at E in the middle.

[0032] In the figure: 1. Connector A; 2. Connector B; 3. Pipeline; 4. Micro pump interface; 5. Tight ring A; 6. Tight ring B; 7. Delivery chamber; 8. Top block; 9. Pressure ring; 10. Pressure reset assembly; 101. Connecting plate; 102. Extrusion block; 103. Contact table; 104. Connecting rod; 11. Press-down fastening assembly; 111. Groove table; 112. Sleeve; 113. Sliding rod; 114. Moving ring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 12 The present invention provides a technical solution: a front tube of a continuous infusion micro pump, comprising a joint A1, a pipeline 3 is installed at the bottom end of the joint A1, a tight ring A5 and a tight ring B6 are installed on the inner wall of the joint A1, a delivery bin 7 is installed on the outer wall of the joint A1, a delivery cavity is opened in the side wall of the joint A1 and inside the tight ring A5, a slide groove is opened in the side wall of the joint A1 near the top end of the delivery bin 7, a top block 8 is opened in the slide groove near the top end of the delivery bin 7, an annular groove is opened in the inner wall of the joint A1 near the top end, and a pressing ring 9 is opened in the annular groove for limited sliding;

[0035] A pressure reset component 10 is installed in the internal conveying cavity of the tight ring A5 and in the side wall of the joint A1 near the top slide of the conveying bin 7. The pressure reset component 10 includes a connecting plate 101 installed in the side wall of the joint A1 near the top slide of the conveying bin 7. The connecting plate 101 has a contact platform 103 for limited sliding inside. It also includes an extrusion block 102 that slides in the internal conveying cavity of the tight ring A5. The contact platform 103 is connected to the back end of the top block 8. A connecting rod 104 is installed at the back end of the top block 8. A downward pressing fastening component 11 is installed at the back end of the pressure ring 9 and the outer surface of the joint A1. A slight looseness occurs at the interface between the micropump and the front tube, so that the micropump interface 4 is offset in the joint A1 to form a gap. The pressure of the liquid medicine leaking from the gap can correct and reset the micropump interface 4 at the joint A1, so that the micropump and the joint A1 are tightly connected again.

[0036] As an embodiment of the present invention, a connector B2 is installed at the interface at the other end of the pipeline 3, a micro pump interface 4 is inserted inside the connector A1, and the connector B2 is connected to the extension tube. During infusion, the drug solution enters the pipeline 3 through the connector A1, and the drug solution in the pipeline 3 enters the extension tube through the connector B2. The drug solution in the extension tube is then injected into the patient's body through the indwelling needle;

[0037] As an embodiment of the present invention, the tight ring A5 is installed in the joint A1 near the bottom area, and the tight ring B6 is installed in the area above the tight ring A5. The surfaces of the tight ring A5 and the tight ring B6 are both provided with inclined surfaces. The tight ring A5, the tight ring B6 and the pressure ring 9 are all made of natural rubber. There is space between the tight ring A5 and the tight ring B6. When a gap is generated between the tight ring A5 and the micro pump interface 4, the liquid medicine will leak out. The leaked liquid medicine will fill the space inside the tight ring A5 and the tight ring B6, thereby squeezing the extrusion block 102 inside the tight ring B6.

[0038] As an embodiment of the present invention, the conveying cavity in the tight ring A5 is in a transverse T-shape, one end of the conveying cavity in the side wall of the joint A1 is connected to the transverse T-shaped conveying cavity in the tight ring A5, and the other end of the conveying cavity in the side wall of the joint A1 is connected to the inner cavity of the conveying bin 7. When the liquid medicine is extruded, it will pass through the conveying cavity in the tight ring A5, inject the liquid medicine into the conveying cavity in the side wall of the joint A1, and inject the liquid medicine into the conveying bin 7 through the conveying cavity in the side wall of the joint A1;

[0039] As an embodiment of the present invention, there are six groups of conveying cavities in the side wall of the connector A1 and the conveying cavities in the tight ring A5, and the number of conveying bins 7 is also six. The six groups of conveying cavities in the connector A1 and the tight ring A5 are equidistantly distributed in a circular shape inside the connector A1, and the six groups of conveying bins 7 are equidistantly distributed in a circular shape on the surface of the connector A1. The conveying bin 7 is designed to be transparent, and the inner wall of the conveying bin 7 is inlaid with PH test paper. The transparent conveying bin 7 enables the staff to intuitively see the changes of the PH test paper inside the conveying bin 7, so as to quickly tighten the interface A;

[0040] As an embodiment of the present invention, the top block 8 is provided with an arc surface at one end close to the micro pump interface 4, the abutment platform 103 is composed of a group of convex blocks and a group of round rods in a transverse combination, and a spring is sleeved on the surface of the round rod. The establishment of six groups of top blocks 8 can prevent the micro pump interface 4 from being offset inside the joint A1, and the arc-shaped design of the top block 8 surface can reduce the wear on the micro pump interface 4;

[0041] As an embodiment of the present invention, the extrusion block 102 is limited to slide in the horizontal T-shaped vertical conveying cavity in the tight ring A5, a spring is installed at the top of the extrusion block 102, a vertical slide groove is opened inside the pressure ring 9, and the top of the connecting rod 104 is limited to slide in the vertical slide groove inside the pressure ring 9. The establishment of the connecting rod 104 can make the top block 8 correct and reset the micro pump interface 4, and the pressure ring 9 can also synchronously resist the micro pump interface 4. When the pressure ring 9 moves downward, the connecting rod 104 will slide in the vertical slide groove inside the pressure ring 9;

[0042] The long-term vibration of the micro pump during operation may cause a slight loosening of the interface between the micro pump and the front tube, which may cause leakage of the drug solution. The specific implementation method is as follows: first, insert the connector A1 into the surface of the micro pump interface 4, connect the connector B2 to the infusion extension tube, insert the connector A1 into the surface of the micro pump interface 4, and the tight ring A5 and the tight ring B6 are in contact with the surface of the micro pump interface 4. The long-term vibration of the micro pump causes the tight ring A5 and the micro pump interface 4 to loosen, causing the micro pump interface 4 to deviate in the connector A1 to form a gap, and the drug solution leaks from the gap between the tight ring A5 and the micro pump interface 4, and the pressure of the drug solution in the pipeline 3 is increased. The pressure of the medicine leaking out increases. At this time, the leaked medicine is retained in the gap between the tight ring A5 and the tight ring B6. The gradual increase of the medicine will pressurize the extrusion block 102 in the delivery cavity of the tight ring B6, so that the medicine enters the delivery bin 7. The gradual increase of the medicine in the delivery bin 7 causes the medicine to be discharged through the delivery cavity near the top of the delivery bin 7 in the joint A1, pushing the abutment table 103 to drive the top block 8 to extend, so that the micro pump interface 4 returns to the inside of the joint A1. The top block 8 extends through the connecting rod 104 to drive the pressure ring 9 to extend, and the pressure ring 9 is tightly attached to the surface of the micro pump interface 4.

[0043] As an embodiment of the present invention, the pressing and fastening assembly 11 includes a groove table 111 installed on the surface of the joint A1, a sleeve 112 is vertically slidable inside the groove table 111, a slide rod 113 is limitedly slidable inside the sleeve 112, the end of the slide rod 113 is connected to the back end of the pressing ring 9, and a moving ring 114 is vertically slidable on the surface of the groove table 111. When the drug liquid leaks from the gap into the delivery bin 7, the PH test paper will change when encountering the drug liquid. The medical staff observes the change of the PH test paper and can tighten the micro pump interface 4 and the joint A1 again by pressing the fastening assembly 11. The end of the sleeve 112 away from the slide rod 113 is connected to the inner wall of the moving ring 114. A spring is installed at the bottom of the sleeve 112, and the bottom end of the spring is connected to the bottom of the inner wall of the groove table 111.

[0044] Working principle: When in use, first insert connector A1 into the surface of micro pump interface 4, connect connector B2 to the infusion extension tube, insert connector A1 into the surface of micro pump interface 4, and close ring A5 and close ring B6 contact the surface of micro pump interface 4. The micro pump vibrates for a long time, which makes the close ring A5 and micro pump interface 4 loose, causing the micro pump interface 4 to deviate and form a gap in connector A1. The liquid medicine leaks out from the gap between the close ring A5 and the micro pump interface 4, and the pressure of the liquid medicine in pipeline 3 decreases. The micro pump increases the output pressure of the liquid medicine, and the pressure of the leaked liquid medicine increases. The force increases, and the leaked liquid medicine is retained in the gap between the tight ring A5 and the tight ring B6. The gradual increase of the liquid medicine will pressurize the extrusion block 102 in the delivery cavity of the tight ring B6, so that the liquid medicine enters the delivery chamber 7. The gradual increase of the liquid medicine in the delivery chamber 7 causes the liquid medicine to be discharged through the delivery chamber near the top of the delivery chamber 7 in the joint A1, pushing the abutment table 103 to drive the top block 8 to extend, so that the micro pump interface 4 returns to the inside of the joint A1, and the top block 8 extends through the connecting rod 104 to drive the pressure ring 9 to extend, and the pressure ring 9 is tightly attached to the surface of the micro pump interface 4;

[0045] The liquid medicine in the delivery chamber 7 will come into contact with the PH test paper and cause its surface to change color. When the medical staff observes the PH test paper changing color, they slide the movable ring 114 down on the surface of the groove table 111. The movable ring 114 drives the pressure ring 9 to move down on the surface of the micro pump interface 4 through the sleeve 112 and the slide rod 113, and tightens the micro pump interface 4 and the connector A1.

[0046] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuous infusion micro pump front tube, comprising a connector A (1), characterized in that: The bottom end of the joint A (1) is provided with a pipeline (3), the inner wall of the joint A (1) is provided with a tight ring A (5) and a tight ring B (6), the outer wall of the joint A (1) is provided with a conveying bin (7), the side wall of the joint A (1) and the inside of the tight ring A (5) are provided with a conveying cavity, the side wall of the joint A (1) is provided with a slide groove near the top end of the conveying bin (7), the side wall of the joint A (1) is provided with a top block (8) for horizontal limiting sliding in the slide groove, the inner wall of the joint A (1) is provided with an annular groove near the top end, and a pressing ring (9) is provided in the annular groove for limiting sliding; A pressure reset component (10), the pressure reset component (10) being installed in the internal conveying cavity of the tight ring A (5) and in the chute near the top of the conveying bin (7) in the side wall of the joint A (1), the pressure reset component (10) comprising a connecting plate (101) installed in the chute near the top of the conveying bin (7) in the side wall of the joint A (1), the connecting plate (101) having a stopper (103) for limited sliding inside, and also comprising an extrusion block (102) for limited sliding in the internal conveying cavity of the tight ring A (5), the stopper (103) being connected to the back end of the top block (8), and a connecting rod (104) being installed at the back end of the top block (8); A downward pressing fastening assembly (11), wherein the downward pressing fastening assembly (11) is mounted on the back end of the pressing ring (9) and the outer surface of the joint A (1).

2. A continuous infusion micro pump front tube according to claim 1, characterized in that: A connector B (2) is installed at the interface at the other end of the pipeline (3), and a micro pump interface (4) is inserted into the connector A (1).

3. A continuous infusion micro pump front tube according to claim 1, characterized in that: The tight ring A (5) is installed in the joint A (1) near the bottom area, and the tight ring B (6) is installed in the upper area of ​​the tight ring A (5). The surfaces of the tight ring A (5) and the tight ring B (6) are both provided with inclined surfaces. The tight ring A (5), the tight ring B (6) and the pressure ring (9) are all made of natural rubber.

4. A continuous infusion micro pump front tube according to claim 3, characterized in that: The conveying cavity in the tight ring A (5) is in a transverse T-shape, one end of the conveying cavity in the side wall of the connector A (1) is connected to the transverse T-shaped conveying cavity inside the tight ring A (5), and the other end of the conveying cavity in the side wall of the connector A (1) is connected to the inner cavity of the conveying bin (7).

5. The continuous infusion micro pump front tube according to claim 1, characterized in that: The conveying cavities in the side wall of the connector A (1) and the conveying cavities in the tight ring A (5) are each in groups of six. The number of the conveying chambers (7) is also six. The six groups of conveying cavities in the connector A (1) and the tight ring A (5) are equidistantly distributed in a circular shape inside the connector A (1). The six groups of conveying chambers (7) are equidistantly distributed in a circular shape on the surface of the connector A (1). The conveying chambers (7) are transparent in design, and the inner wall of the conveying chambers (7) is inlaid with pH test paper.

6. The continuous infusion micro pump front tube according to claim 1, characterized in that: The top block (8) is provided with a curved surface at one end close to the micro pump interface (4), and the abutment platform (103) is composed of a group of protrusions and a group of round rods which are laterally combined, and a spring is sleeved on the surface of the round rods.

7. The continuous infusion micro pump front tube according to claim 1, characterized in that: The extrusion block (102) is limitedly slid in a transverse T-shaped vertical conveying cavity in the tight ring A (5); a spring is installed at the top end of the extrusion block (102); a vertical slide groove is provided inside the pressure ring (9); and the top end of the connecting rod (104) is limitedly slid in the vertical slide groove inside the pressure ring (9).

8. The continuous infusion micro pump front tube according to claim 1, characterized in that: The press-down fastening assembly (11) comprises a groove platform (111) mounted on the surface of the joint A (1), a sleeve (112) sliding vertically inside the groove platform (111), a slide rod (113) sliding within the sleeve (112) for limiting sliding, an end of the slide rod (113) connected to the back end of the pressing ring (9), and a movable ring (114) sliding vertically on the surface of the groove platform (111).

9. A continuous infusion micro pump front tube according to claim 8, characterized in that: One end of the sleeve (112) away from the slide rod (113) is connected to the inner wall of the moving ring (114); a spring is installed at the bottom of the sleeve (112); and the bottom end of the spring is connected to the bottom of the inner wall of the groove platform (111).

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