Liquid delivery device

Abstract

A liquid conveying device comprises a base and a reversing knob, the base is provided with an injection connector, a connecting connector and an output connector, a body of the reversing knob is rotatably contained in the base, a groove is formed in the outer peripheral wall of the body, and the groove is matched with the inner peripheral wall of the base to form a flowing channel; the body has a first position and a second position, the flow channel communicates the injection joint with the connection joint in response to rotation of the body to the first position, and the flow channel communicates the injection joint with the output joint in response to rotation of the body to the second position; the connecting joint and the output joint are arranged on the outer side wall of the base in a mutually perpendicular mode, and the output joint is configured to be capable of rotating around the axis of the output joint relative to the base. When the medicine is mixed and conveyed through rotation of the reversing knob, the connecting joint and the base rotate together, and the output joint rotates by itself to avoid the influence on the conveying device.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a liquid delivery device. Background Art

[0002] In medical treatment, drugs for delivery into the human body include solutions and dry powders. Solution-type drugs are generally contained in a containing device, and can be directly drawn out and delivered into the human body using an injection device. For dry powder-type drugs, they need to be dissolved with physiological solution before use to ensure that the drugs are in an appropriate concentration and state before administration.

[0003] During the delivery of solution-type drugs, an operator generally inserts an injection device into the containing device to draw out the drug in the containing device. After separating the injection device from the containing device, the injection device is then connected to a delivery device to deliver the drug into the human body. During the delivery of dry powder-type drugs, a liquid such as physiological solution is generally pre-filled into the injection device. The physiological solution is injected into the containing device for containing solids such as dry powder using the injection device. After the solid is dissolved to form a mixed liquid, the mixed liquid is then drawn out, and finally the injection device is connected to the delivery device to deliver the drug into the human body. Summary of the Invention

[0004] Embodiments of the present disclosure aim to provide a liquid delivery device.

[0005] The present disclosure is achieved through the following technical solutions:

[0006] A liquid delivery device, comprising:

[0007] A base provided with an injection joint, a connection joint, and an output joint;

[0008] A reversing knob, the body of which is rotatably received in the base. A groove is provided on the outer peripheral wall of the body, and the groove and the inner peripheral wall of the base cooperate to form a flow channel. The body has a first position and a second position. In response to the body rotating to the first position, the flow channel connects the injection joint and the connection joint. In response to the body rotating to the second position, the flow channel connects the injection joint and the output joint;

[0009] The connection joint and the output joint are perpendicularly arranged on the outer side wall of the base, and the output joint is configured to be rotatable about its own axis relative to the base.

[0010] For example, the output joint includes a fixed section and a rotating section. The proximal end of the fixed section is connected to the base, the distal end of the fixed section is rotatably connected to the proximal end of the rotating section, and the distal end of the rotating section is used to connect to a delivery device;

[0011] The distal end of the fixed section and the proximal end of the rotating section, one of which is provided with a circumferential groove and the other is provided with a circumferential protrusion. The circumferential protrusion is disposed within the circumferential groove and is capable of rotating within the circumferential groove.

[0012] For example, the liquid delivery device further includes a seal disposed between the circumferential protrusion and the circumferential groove.

[0013] For example, the rotating section is a conical structure, and the outer peripheral radial dimension of the conical structure gradually decreases from the proximal end to the distal end.

[0014] For example, the proximal end of the injection connector is connected to the base, and the distal end of the injection connector is for connecting to an injection device;

[0015] The injection connector is a cylindrical structure, and the inner diameter dimension of the injection connector gradually increases from the proximal end to the distal end.

[0016] For example, the liquid delivery device further includes a fixing base, which includes a base and a side wall connected to each other. The base is connected to the connection connector, and the side wall is for fixedly accommodating the device.

[0017] For example, the side wall includes a plurality of fixing claws, and the plurality of fixing claws are circumferentially spaced on the base. The plurality of fixing claws are for jointly abutting against and fixing the accommodating device, and each fixing claw can be separated from the accommodating device under an external force.

[0018] For example, the injection connector, the connection connector, and the output connector are all disposed on the side wall of the base, and the injection connector, the connection connector, and the output connector are arranged in a staggered manner along the axial direction of the base;

[0019] The flow channel includes a main passage section and an auxiliary passage section. The main passage section extends along the circumferential direction of the body, and the main passage section is correspondingly arranged along the axial direction of the base with the injection connector. The main passage section is in communication with the injection connector, or in response to the rotation of the body, the main passage section is in communication with the injection connector;

[0020] The auxiliary passage section at least extends along the axial direction of the body and communicates with the main passage section. In response to the body rotating to the first position, the auxiliary passage section communicates with the connection connector. In response to the body rotating to the second position, the auxiliary passage section communicates with the output connector.

[0021] For example, the reversing knob further includes a screwing portion connected to the body, and the screwing portion is located outside the base; in response to the rotation of the screwing portion, the screwing portion drives the body to rotate within the base to the first position or the second position.

[0022] For example, the radial dimension of the screwing part is greater than that of the body, the end of the base includes an opening structure, the body is accommodated in the base through the opening structure, and the screwing part abuts against the end of the base.

[0023] For example, the screwing part includes a screwing body and a fixing wall, the screwing body abuts against the end of the base, and the fixing wall is connected to the screwing body;

[0024] Along the axial direction of the body, a receiving space is formed between the part of the body corresponding to the fixing wall and the fixing wall, and the end of the base is accommodated in the receiving space.

[0025] For example, the liquid delivery device further includes a fixing member, the fixing member includes a cover plate and a connecting portion connected to each other, the connecting portion passes through the reversing knob and is fixedly connected to the base, and the cover plate fits against the reversing knob.

[0026] For example, the injection joint is used to connect an injection device, the connection joint is used to connect a receiving device, and the output joint is used to connect a delivery device. Description of the Drawings

[0027] Figure 1 is a schematic connection diagram (I) of the liquid delivery device, the injection device, the receiving device and the delivery device according to an embodiment of the present disclosure;

[0028] Figure 2 is a schematic connection diagram (II) of the liquid delivery device, the injection device, the receiving device and the delivery device according to an embodiment of the present disclosure;

[0029] Figure 3 is a schematic structural diagram (I) of the base according to an embodiment of the present disclosure;

[0030] Figure 4 is a schematic structural diagram (II) of the base according to an embodiment of the present disclosure;

[0031] Figure 5 is a schematic structural diagram (III) of the base according to an embodiment of the present disclosure;

[0032] Figure 6 is a schematic cross-sectional structural diagram of the base according to an embodiment of the present disclosure;

[0033] Figure 7 is Figure 6 a partial enlarged schematic diagram of part A in

[0034] Figure 8 is a schematic assembly diagram (I) of the liquid delivery device according to an embodiment of the present disclosure;

[0035] Figure 9 Schematic diagram (II) of the assembly of a liquid delivery device according to an embodiment of the present disclosure;

[0036] Figure 10 Schematic diagram (III) of the assembly of a liquid delivery device according to an embodiment of the present disclosure;

[0037] Figure 11 Schematic diagram of the cross-sectional structure of a liquid delivery device according to an embodiment of the present disclosure;

[0038] Figure 12 Schematic diagram of the assembly of a reversing knob and a fixing member according to an embodiment of the present disclosure;

[0039] Figure 13 Schematic diagram of the cross-sectional structure of a reversing knob and a fixing member according to an embodiment of the present disclosure;

[0040] Figure 14 Schematic diagram (I) of the structure of a reversing knob according to an embodiment of the present disclosure;

[0041] Figure 15 Schematic diagram (II) of the structure of a reversing knob according to an embodiment of the present disclosure;

[0042] Figure 16 Schematic diagram of the structure of a fixing member according to an embodiment of the present disclosure.

[0043] Reference numerals of the above-mentioned drawings:

[0044] 10 - Liquid delivery device, 20 - Injection device, 30 - Accommodating device, 40 - Delivery device;

[0045] 100 - Base, 111 - Injection joint, 121 - Connection joint, 131 - Output joint, 1311 - Fixed section, 1312 - Rotating section, 1313 - Circumferential protrusion, 140 - Fixed seat, 141 - Base, 142 - Side wall, 150 - Puncture needle, 160 - Connection hole;

[0046] 200 - Reversing knob, 210 - Groove, 211 - First section, 212 - Second section, 220 - Body, 230 - Screwing part, 231 - Screwing body, 232 - Fixed wall, 234 - Accommodating space;

[0047] 300 - Fixing member, 310 - Cover plate, 320 - Connection part, 321 - Connection antenna. Detailed implementation mode

[0048] To make the objectives, technical solutions and advantages of the present disclosure more comprehensible, the present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present disclosure and are not intended to limit the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0049] In the present disclosure, unless otherwise clearly defined and limited, terms such as "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or a movable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components such as abutment. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. It should be noted that when there are limiting words before "connected" and "coupled", they have the meanings defined by the corresponding limiting words, only excluding the obvious cases that need to be excluded, and not excluding other possible cases. For example, "detachable connection" refers to a detachable connection, excluding integration, but movable connection and the like are not excluded.

[0050] In medical treatment, drug delivery is usually involved, especially delivering drugs into the human body. Such drugs include solutions and dry powders, and are generally stored in a containing device 30 when not in use. For solution-type drugs, medical staff generally use an injection device 20 to insert into the containing device 30, draw out the drugs in the containing device 30, separate the injection device 20 from the containing device 30, and then use the injection device 20 to connect to a delivery device 40 to deliver the drugs into the human body; for dry powder drugs, medical staff generally pre-fill a physiological solution or other liquid into the injection device 20, use the injection device 20 to inject the physiological solution or other liquid into the containing device 30 containing the dry powder drugs, dissolve the dry powder drugs to form a mixed liquid, then draw out the mixed liquid, and finally connect the injection device 20 to the delivery device 40 to deliver the mixed liquid into the human body. This drug delivery method is relatively cumbersome in overall operation, and the number of times of inserting and withdrawing the injection device 20 is relatively large. During the repeated insertion and withdrawal of the injection device 20 by medical staff, the part of the injection device 20 that comes into contact with the drug will be exposed to the air, which may cause contamination of the device and the drug, failing to meet the requirements of aseptic operation. At the same time, the repeated insertion and withdrawal of the injection device 20 may also pose a danger to medical staff.

[0051] For example, for patients who need long-term infusion of liquid medicine, a catheter is generally pre-embedded in the patient's body as the delivery device 40 to avoid multiple needle insertions into the human body. In this case, when it is necessary to deliver liquid medicine to the human body, an injection device 20 such as a syringe needs to be inserted into a containing device 30 such as a medicine bottle first, to extract the liquid medicine in the medicine bottle or dissolve the medicine in the medicine bottle and then extract it, and then the syringe is inserted into the catheter to inject the liquid medicine into the human body through the catheter.

[0052] To avoid repeated insertion and extraction of the injection device 20 during liquid delivery, meet the aseptic requirements during liquid delivery, improve the safety performance of liquid delivery, and also avoid the potential danger that the injection device 20 may pose to medical staff, some embodiments of the present disclosure provide a liquid delivery device 10, which can be connected to the injection device 20, the containing device 30, and the delivery device 40 at the same time, and communicate different devices according to the usage requirements, thereby improving the asepticity and safety during liquid delivery.

[0053] Please refer to Figure 1 and Figure 2 , the liquid delivery device 10 includes a base 100 and a reversing knob 200.

[0054] Refer to Figures 3 to 6 , the base 100 is provided with an injection joint 111, a connection joint 121, and an output joint 131.

[0055] Refer to Figures 12 to 15 , the body 220 of the reversing knob 200 is rotatably received in the base 100, a groove 210 is provided on the outer peripheral wall of the body 220, and the groove 210 and the inner peripheral wall of the base 100 cooperate to form a flow channel. The body 220 has a first position and a second position. In response to the body 220 rotating to the first position, the flow channel communicates the injection joint 111 and the connection joint 121; in response to the body 220 rotating to the second position, the flow channel communicates the injection joint 111 and the output joint 131.

[0056] Refer to Figure 5 , Figure 6 and Figure 7 , the connection joint 121 and the output joint 131 are perpendicularly arranged on the outer side wall of the base 100, and the output joint 131 is configured to be rotatable about its own axis relative to the base 100.

[0057] For example, the injection joint 111 is used to connect the injection device 20, the connection joint 121 is used to connect the containing device 30, and the output joint 131 is used to connect the delivery device 40.

[0058] By providing a groove 210 on the peripheral wall of the body 220 in the reversing knob 200, when the body 220 is rotatably received in the base 100, it is convenient for the groove 210 to cooperate with the inner peripheral wall of the base 100 to form a flow channel. When the body 220 of the reversing knob 200 is rotated within the base 100 to the first position under an external force, the flow channel connects the injection joint 111 and the connection joint 121, that is, connects the injection device 20 and the receiving device 30. The injection device 20 can then extract the liquid medicine in the receiving device 30 or extract the medicine in the receiving device 30 after dissolution. When the body 220 of the reversing knob 200 is rotated within the base 100 to the second position under an external force, the flow channel connects the injection joint 111 and the output joint 131, that is, connects the injection device 20 and the delivery device 40. The injection device 20 can then inject the extracted liquid medicine into the human body through the delivery device 40.

[0059] Meanwhile, the delivery device 40 is generally used to connect to the patient's body. By arranging the connection joint 121 and the output joint 131 perpendicular to each other on the outer side wall 142 of the base 100, and configuring the output joint 131 to be rotatable about its own axis relative to the base 100, it can avoid affecting the delivery device 40 when the receiving device 30 together with the base 100 is flipped, thereby preventing discomfort to the patient's body caused by the shaking of the delivery device 40. For example, when it is necessary to mix the medicine in the injection device 20 and the receiving device 30, or when it is necessary to shake the liquid medicine in the receiving device 30 to prevent sedimentation, the receiving device 30 together with the base 100 can be flipped, and the central axis of the output joint 131 can be used as the axis of rotation. Meanwhile, during the entire liquid delivery process, the injection device 20 does not need to be repeatedly inserted and removed. Medical staff only need to operate the reversing knob 200 to achieve liquid delivery, greatly improving the sterility and safety during the liquid delivery process.

[0060] The injection device 20, the receiving device 30, and the delivery device 40 can all be devices produced by any brand and any manufacturer that are suitable for the liquid delivery device 10 in the present disclosure. The injection device 20 is capable of injecting and extracting liquid after being connected to the base 100 of the liquid delivery device 10. When it is necessary to inject liquid into the receiving device 30, the injection device 20 also needs to have the function of storing liquid; the receiving device 30 is capable of storing and mixing medicine after being connected to the base 100 of the liquid delivery device 10; the delivery device 40 is capable of delivering liquid medicine after being connected to the base 100 of the liquid delivery device 10. For example, referring to Figure 1 and Figure 2, when the injection device 20 is a syringe, the accommodating device 30 is a medicine bottle, and the conveying device 40 is a catheter, the base 100 of the liquid conveying device 10 is provided with an injection connector 111 for connecting the syringe, a connection connector 121 for connecting the medicine bottle, and an output connector 131 for connecting the catheter.

[0061] In the actual operation process, the substance contained in the medicine bottle can be a liquid medicine or a solid medicine, and the substance contained in the syringe can be a liquid or can contain nothing. When the substances contained in both the medicine bottle and the syringe are liquids, at the beginning of the operation, the body 220 of the reversing knob 200 can be rotated relative to the base 100 to the first position first to connect the injection connector 111 and the connection connector 121, and the liquid inside the syringe is injected into the medicine bottle by using the syringe. Then, the medicine bottle is turned upside down to fully mix the two liquids to form a mixed liquid. Then, the mixed liquid is drawn out by using the syringe. At this time, the body 220 of the reversing knob 200 is rotated relative to the base 100 to the second position to connect the injection connector 111 and the output connector 131, and the mixed liquid is injected into the human body through the catheter by using the syringe, and finally the drug is injected into the human body. When the medicine bottle together with the connection connector 121 and the base 100 is turned upside down, since the output connector 131 can rotate around its own axis relative to the base 100, the catheter connected to the output connector 131 will not be twisted, thus avoiding discomfort to the patient's body.

[0062] Similarly, if the substance contained in the medicine bottle is a liquid and the syringe contains nothing, at the beginning of the operation, the medicine bottle is turned upside down first to make the liquid inside it shake to avoid sedimentation. Then, the body 220 of the reversing knob 200 is rotated relative to the base 100 to the first position to connect the injection connector 111 and the connection connector 121, and the liquid inside the medicine bottle is drawn out by using the syringe. Then, the body 220 of the reversing knob 200 is rotated relative to the base 100 to the second position to connect the injection connector 111 and the output connector 131, and the liquid is injected into the human body through the catheter by using the syringe to realize the injection of the drug into the human body. And if the substance contained in the medicine bottle is a solid and the substance contained in the syringe is a liquid, at the beginning of the operation, the body 220 of the reversing knob 200 is rotated relative to the base 100 to the first position to connect the injection connector 111 and the connection connector 121, and the liquid inside it is injected into the medicine bottle by using the syringe. Then, the medicine bottle is turned upside down to fully mix the liquid and the solid to form a mixed liquid. Then, the mixed liquid is drawn out by using the syringe. At this time, the body 220 of the reversing knob 200 is rotated relative to the base 100 to the second position to connect the injection connector 111 and the output connector 131, and the mixed liquid is injected into the human body through the catheter by using the syringe to realize the injection of the drug into the human body.

[0063] In some embodiments of the present disclosure, reference is made to Figure 3 , Figure 4 and Figure 5 , the output connector 131 includes a fixed section 1311 and a rotating section 1312. The proximal end of the fixed section 1311 is connected to the base 100, and the distal end of the fixed section 1311 is rotatably connected to the proximal end of the rotating section 1312. The distal end of the rotating section 1312 is used to connect to the conveying device 40. Reference is made to Figure 6 and Figure 7 , one of the distal end of the fixed section 1311 and the proximal end of the rotating section 1312 is provided with a circumferential groove, and the other is provided with a circumferential protrusion 1313. The circumferential protrusion 1313 is disposed in the circumferential groove and can rotate within the circumferential groove.

[0064] With this structural arrangement, by the mutual cooperation of the circumferential protrusion 1313 and the circumferential groove, the fixed section 1311 directly connected to the base 100 can flip simultaneously with the base 100 and the accommodating device 30, while at this time the rotating section 1312 of the output connector 131 can remain stationary, that is, the output connector 131 can rotate about its own axis relative to the base 100 through the rotating section 1312. The structure is simpler, the cost is lower, and it is more convenient for processing and assembly, which is more conducive to the wide application and popularization of the liquid conveying device 10.

[0065] For example, the output connector 131 is connected to the peripheral wall of the base 100. The output connector 131 includes a fixed section 1311 and a rotating section 1312. The proximal end of the fixed section 1311 is connected to the base 100, and the distal end of the fixed section 1311 is rotatably connected to the proximal end of the rotating section 1312. The distal end of the rotating section 1312 is used to connect to the conveying device 40. At the connection position between the fixed section 1311 and the rotating section 1312, the distal end of the fixed section 1311 is provided with a circumferential groove, and the proximal end of the rotating section 1312 is provided with a circumferential protrusion 1313. The circumferential protrusion 1313 is disposed in the circumferential groove and can rotate within the circumferential groove. For another example, at the connection position between the fixed section 1311 and the rotating section 1312, a circumferential protrusion 1313 can also be provided at the distal end of the fixed section 1311, and a circumferential groove can be provided at the proximal end of the rotating section 1312. The circumferential protrusion 1313 is disposed in the circumferential groove and can rotate within the circumferential groove.

[0066] In some embodiments of the present disclosure, the liquid conveying device 10 further includes a seal (not shown in the figure), and the seal is disposed between the circumferential protrusion 1313 and the circumferential groove. Through the arrangement of the seal, when the fixed section 1311 and the rotating section 1312 of the output connector 131 rotate relative to each other, good sealing performance can be achieved, and liquid leakage from the connection position between the two sections can be avoided.

[0067] For example, when using the cooperation of the circumferential groove and the circumferential protrusion 1313, the output joint 131 can rotate around its own axis relative to the base 100 through the rotating section 1312. A sealing ring is provided at the connection position of the circumferential groove and the circumferential protrusion 1313. The sealing ring has a certain elasticity. By using the elastic deformation of the sealing ring when it is squeezed, the sealing effect is achieved. However, it should be noted that the setting of the sealing ring can play a sealing role, but will not have a great impact on the relative rotation of the fixed section 1311 and the rotating section 1312. For example, when using a sealing ring for sealing, the clamping force on the sealing ring can be adjusted so that it can not only achieve the sealing effect but also not affect the relative rotation of the fixed section 1311 and the rotating section 1312.

[0068] In some embodiments of the present disclosure, the rotating section 1312 is a conical structure, and the peripheral radial dimension of the conical structure gradually decreases from its proximal end to its distal end. Through this structural setting, the conveying device 40 can be directly and tightly sleeved on the distal end of the rotating section 1312, thereby realizing the tight connection between the conveying device 40 and the output joint 131 and ensuring the sealing performance of the connection.

[0069] For example, referring to Figures 3 to 6 , both the rotating section 1312 and the fixed section 1311 of the output joint 131 include a proximal end and a distal end. The proximal end of the fixed section 1311 is connected to the base 100, the distal end of the fixed section 1311 is rotatably connected to the proximal end of the rotating section 1312, and the distal end of the rotating section 1312 is used to connect the conveying device 40. For another example, the overall shape of the fixed section 1311 is a cylindrical structure, and the overall shape of the rotating section 1312 is a conical structure, and the peripheral radial dimension of the conical structure gradually decreases from the proximal end to the distal end of the rotating section 1312.

[0070] Referring to Figures 3 to 6 , the injection joint 111 connected to the base 100 also includes a proximal end and a distal end. In some embodiments of the present disclosure, the proximal end of the injection joint 111 is connected to the base 100, and the distal end of the injection joint 111 is used to connect the injection device 20. The injection joint 111 is a cylindrical structure, and the inner diameter dimension of the injection joint 111 gradually increases from its proximal end to its distal end. Through this structural setting, the injection head of the injection device 20 can be inserted into the distal end of the injection joint 111, so that the injection device 20 and the injection joint 111 are in communication with each other, and at the same time, the sealing performance of the connection can be ensured, and liquid leakage at the connection can be avoided.

[0071] Referring to Figure 3 , Figure 4 and Figure 5, the liquid delivery device 10 further includes a fixing base 140. The fixing base 140 includes a base 141 and a side wall 142 that are connected to each other. The base 141 is connected to the connection joint 121, and the side wall 142 is used to fixedly accommodate the device 30.

[0072] Before actual operation, medical staff can install the accommodating device 30 on the fixing base 140 in a specific environment according to needs, so as to realize the connection and fixation of the fixing base 140 relative to the base 100. In a specific use scenario, there is no need to connect the accommodating device 30 anymore, and it can be directly used, avoiding cross-infection during use. For example, before actual operation, medical staff place the accommodating device 30 in the fixing space formed by enclosing the base 141 and the side wall 142 in a sterile environment. The accommodating device 30 abuts against the base 141. The accommodating device 30 can communicate with the base 100 through the connection joint 121, and the side wall 142 abuts against the accommodating device 30 to fix the accommodating device 30.

[0073] In some embodiments of the present disclosure, the side wall 142 includes a plurality of fixing claws. The plurality of fixing claws are circumferentially spaced on the base 141. The plurality of fixing claws are used to jointly abut against and fix the accommodating device 30, and each fixing claw can be separated from the accommodating device 30 under the action of an external force. By adopting the structural design of the fixing claws, it is more convenient to fix the accommodating device 30, and the opening size of the plurality of fixing claws can be correspondingly adjusted according to the size of the accommodating device 30, and the applicable range is wider.

[0074] For example, referring to Figures 3 to 5 , Figures 8 to 10 , the number of fixing claws is set to six. These fixing claws are all connected to the edge position of the base 141 and are circumferentially spaced on the base 141. The first ends of these fixing claws are fixed relative to the base 141, and the second ends are not fixed, so that the second ends of these fixing claws can approach or move away from each other under the action of an external force. When the second ends of these fixing claws approach each other, the opening structure formed by them is smaller. When the second ends of these fixing claws move away from each other, the opening structure formed by them is larger. During the connection of the accommodating device 30, the second ends of the fixing claws can be first acted on to make the second ends of these fixing claws move away from each other. When the accommodating device 30 abuts against the base 141, the entire fixing claws can abut against the side wall of the accommodating device 30, thereby realizing the clamping and fixing of the accommodating device 30. If it is necessary to disassemble the accommodating device 30 from the base 100, an external force can be applied to these fixing claws to make the second ends of the fixing claws disengage from the accommodating device 30, and then the accommodating device 30 can be removed from the fixing base 140. Of course, an external force can also be directly applied to the accommodating device 30 to make the accommodating device 30 overcome the friction force with the fixing claws and then disengage from the clamping of these fixing claws.

[0075] In some embodiments of the present disclosure, with reference to Figure 9 , the base 100 further includes a puncture needle 150. The puncture needle 150 is connected to the connection joint 121, and the puncture needle 150 is used to puncture the accommodating device 30 and connect the accommodating device 30 to the connection joint 121. Through the arrangement of the puncture needle 150, the accommodating device 30 can be connected to the connection joint 121 during the installation process, which is more convenient in operation. At the same time, the sealing performance of the connection between the accommodating device 30 and the connection joint 121 can be improved.

[0076] For example, the first end of the connection joint 121 is connected to the base 100 through a connection port, the second end of the connection joint 121 is connected to the puncture needle 150, and the extending direction of the connection joint 121 is the same as that of the puncture needle 150. At the same time, the second end of the connection joint 121 is also connected to the base 141 and is vertically arranged relative to the base 141. When a fixing space is formed by enclosing between the side wall 142 of the fixing seat 140 and the base 141, the puncture needle 150 is located in this fixing space. When the accommodating device 30 is installed on the fixing seat 140, the puncture needle 150 is used to puncture the inside of the accommodating device 30, thereby realizing the connection between the accommodating device 30 and the connection joint 121.

[0077] With reference to Figures 3 to 5 , Figures 8 to 10 , the injection joint 111, the connection joint 121, and the output joint 131 are all arranged on the side wall of the base 100. At the same time, with reference to Figure 6 , the injection joint 111, the connection joint 121, and the output joint 131 are arranged in a staggered manner along the axial direction of the base 100. Taking Figure 6 as a reference, the axial direction of the base 100 is the up-and-down direction. The flow channel includes a main passage section and an auxiliary passage section. The main passage section extends along the circumferential direction of the main body 220, and the main passage section is correspondingly arranged along the axial direction of the base 100 and is connected to the injection joint 111. The main passage section is in communication with the injection joint 111, or in response to the rotation of the main body 220, the main passage section is in communication with the injection joint 111; the auxiliary passage section extends at least along the axial direction of the main body 220 and is connected to the main passage section; in response to the main body 220 rotating to the first position, the auxiliary passage section is connected to the connection joint 121, and in response to the main body 220 rotating to the second position, the auxiliary passage section is connected to the output joint 131.

[0078] It should be noted that the main passage section of the flow passage extends along the circumferential direction of the main body 220. When the main passage section is circumferentially arranged around the main body 220 and the main body 220 of the reversing knob 200 is placed in the base 100, the main passage section is arranged corresponding to the injection joint 111 along the axial direction of the base 100. At this time, regardless of whether the main body 220 of the reversing knob 200 rotates, the main passage section is always in communication with the injection joint 111. When the main passage section only extends a certain distance circumferentially on the main body 220 and the main body 220 of the reversing knob 200 is placed in the base 100, although the main passage section is arranged opposite to the injection joint 111 along the axial direction of the base 100, the main passage section and the injection joint 111 are not necessarily in communication. If they are in a non-communicating state, then in response to the rotation of the main body, the main passage section and the injection joint 111 can be in communication with each other. In addition, the auxiliary passage section extends at least along the axial direction of the main body 220, including: the auxiliary passage section only extends along the axial direction of the main body 220, and the auxiliary passage section extends along both the axial direction and the circumferential direction of the main body 220 at the same time.

[0079] By making the main passage section of the flow passage communicate with the injection joint 111, and during the rotation of the main body 220 in the base 100, enabling the auxiliary passage section of the flow passage to selectively communicate with the connection joint 121 or the output joint 131, the operation is simpler and more convenient, and the operation errors of medical staff can be reduced.

[0080] In some embodiments of the present disclosure, referring to Figures 12 to 15 , a groove 210 is provided on the outer peripheral wall of the main body 220. The groove 210 includes a first section 211 and a second section 212. The first section 211 extends along the circumferential direction of the main body 220, and the second section 212 communicates with the first section 211. When the main body 220 is placed in the base 100, the groove 210 opened on the outer peripheral wall of the main body 220 cooperates with the inner peripheral wall of the base 100 to form a flow passage, that is, the main passage section of the flow passage is formed by the cooperation of the first section 211 of the groove 210 and the inner peripheral wall of the base 100, and the auxiliary passage section of the flow passage is formed by the cooperation of the second section 212 of the groove 210 and the inner peripheral wall of the base 100.

[0081] During the rotation of the body 220 of the reversing knob 200 within the base 100, the groove 210 always cooperates with the inner peripheral wall of the base 100 to form a flow channel, so that the shape of the entire flow channel does not change. At the same time, in the axial direction of the base 100, the injection joint 111, the connection joint 121, and the output joint 131 are arranged in a staggered manner. During the rotation of the body 220, the main passage section of the flow channel communicates with the injection joint 111. When the reversing knob 200 rotates to the first position, the auxiliary passage section of the flow channel communicates with the connection joint 121. At this time, the injection joint 111 and the connection joint 121 can be connected through the flow channel, and the injection device 20 and the accommodating device 30 can be connected. When the body 220 rotates to the second position, the auxiliary passage section of the flow channel communicates with the output joint 131. At this time, the injection joint 111 and the output joint 131 can be connected through the flow channel, and the injection device 20 and the conveying device 40 can be connected.

[0082] In some embodiments of the present disclosure, the auxiliary passage section and the main passage section are perpendicularly arranged. Through this connection method, the speed of the liquid can be reduced by using the position where the main passage section and the auxiliary passage section communicate with each other. For example, when the liquid flows from the main passage section of the flow channel to the auxiliary passage section of the flow channel, the liquid will generate an impact at the connection position of the two sections to form a turbulent flow, thereby reducing the flow rate of the liquid and preventing medical staff from applying too much force to the injection device 20, resulting in too fast a flow rate of the liquid into the human body and causing damage to the human body.

[0083] For example, referring to Figure 12 and Figure 14 , the first section 211 of the groove 210 extends circumferentially on the outer peripheral wall of the body 220, the second section 212 of the groove 210 is connected to the end position of the first section 211, and the second section 212 is perpendicularly arranged with respect to the first section 211. After the body 220 is accommodated inside the base 100, the first section 211 of the groove 210 cooperates with the inner peripheral wall of the base 100 to form the main passage section of the flow channel, the second section 212 of the groove 210 cooperates with the inner peripheral wall of the base 100 to form the auxiliary passage section of the flow channel, and during the rotation of the body 220, the shape of the entire flow channel does not change. The formed flow channel has an auxiliary passage section that can be connected to the end position of the main passage section, and the auxiliary passage section is perpendicular to the main passage section.

[0084] In some other embodiments of the present disclosure, the auxiliary passage section of the flow passage communicates with the middle part of the main passage section, and the auxiliary passage section and the main passage section are arranged perpendicular to each other. In this way, the liquid can also be decelerated by using the position where the main passage section and the auxiliary passage section communicate with each other. When the liquid flows from the main passage section of the flow passage to the auxiliary passage section of the flow passage, the liquid will first be buffered in the main passage section. When the liquid reaches a certain stable state, it will enter the auxiliary passage section through the communication position between the two sections, so as to achieve the effect of reducing the liquid flow rate, and avoid the excessive force applied by the medical staff to the injection device 20, resulting in too fast a flow rate of the liquid into the human body, thus causing damage to the human body. For example, the main passage section of the flow passage extends along the circumferential direction of the body 220, and the auxiliary passage section of the flow passage extends along the axial direction of the body 220, so that the overall shape of the flow passage is similar to a "T" shape. When the body 220 rotates in the base 100, the main passage section of the flow passage is always in communication with the injection connector 111, and the auxiliary passage section of the flow passage is selectively in communication with the connection connector 121 or the output connector 131.

[0085] In some embodiments of the present disclosure, referring to Figures 10 to 15 , the reversing knob 200 further includes a screwing portion 230 connected to the body 220, and the screwing portion 230 is located outside the base 100. In response to the rotation of the screwing portion 230, the screwing portion 230 drives the body 220 to rotate in the base 100 to the first position or the second position. By accommodating the body 220 in the base 100, the groove 210 on the outer peripheral wall of the body 220 is used to cooperate with the inner peripheral wall of the base 100 to form a flow passage, and the screwing portion 230 is located outside the base 100. In a specific operation, the medical staff can apply a rotational force to the screwing portion 230, and use the screwing portion 230 to drive the body 220 to rotate circumferentially in the base 100. Compared with directly operating the body 220 to rotate circumferentially in the base 100, this method is simpler and more convenient.

[0086] In some other embodiments of the present disclosure, the radial dimension of the screwing portion 230 is greater than that of the body 220. The end of the base 100 includes an opening structure, and the body 220 is accommodated in the base 100 through the opening structure, and the screwing portion 230 abuts against the end of the base 100. With this arrangement, by abutting the screwing portion 230 against the end of the base 100, the gap between the screwing portion 230 and the end of the base 100 is avoided, so that the body 220 can be completely accommodated inside the base 100 through the opening structure without protruding from the base 100 through the opening structure. The structure of the entire liquid delivery device 10 is more compact, and the liquid delivery process is also more stable. For example, the screwing portion 230 and the body 220 are coaxially arranged, that is, the central axes of the screwing portion 230 and the body 220 coincide with each other. The body 220 is inserted and accommodated inside the base 100 through the end of the base 100. At this time, since the radial dimension of the screwing portion 230 is greater than that of the body 220, the screwing portion 230 can abut against the end of the base 100.

[0087] In some embodiments of the present disclosure, both the body 220 and the screwing portion 230 of the reversing knob 200 are cylindrical structures, and the central axes of the body 220 and the screwing portion 230 coincide with each other. With this structural arrangement, when the screwing portion 230 drives the body 220 to rotate circumferentially in the base 100, the two can rotate coaxially, which is more labor-saving for the operator.

[0088] In some embodiments of the present disclosure, refer to Figure 11 and Figure 12 , the screwing portion 230 includes a screwing body 231 and a fixed wall 232. The screwing body 231 abuts against the end of the base 100, and the fixed wall 232 is connected to the screwing body 231. Refer to Figure 13 and Figure 14 , along the axial direction of the body 220, a receiving space 234 is formed between the portion of the body 220 corresponding to the fixed wall 232 and the fixed wall 232, and the end of the base 100 is accommodated in the receiving space 234. Taking Figure 13 as a reference, the axial direction of the body 220 is the up and down direction.

[0089] In actual design, the size of the receiving space 234 can be adjusted as needed to correspond to the thickness dimension of the end of the base 100, so that the end of the base 100 can be snapped into the receiving space 234, better restricting the degrees of freedom of the reversing knob 200 relative to the base 100 other than the rotation direction, and increasing the stability and reliability of the entire device during use.

[0090] For example, when the body 220 of the reversing knob 200 is received in the base 100, the screwing body 231 of the screwing portion 230 abuts against the end of the base 100. Since the radial dimension of the screwing body 231 is greater than the radial dimension of the end of the base 100, the screwing body 231 can completely cover and abut against the end of the base 100. The fixing wall 232 is a ring-shaped wall structure and is connected to the edge portion of the screwing body 231. When the screwing body 231 abuts against the end of the base 100, the fixing wall 232 is located outside the periphery of the end of the base 100. Refer to Figure 13 , the axial direction of the body 220 is the up and down direction. In this direction, if the extension length of the fixing wall 232 is L, the specific portion of the body 220 corresponding to the fixing wall 232 refers to: starting from the end where the body 220 is connected to the screwing body 231, the portion corresponding to the length L extending towards the other end of the body 220. An annular receiving space 234 can be formed between the portion of the body 220 corresponding to the fixing wall 232 and the fixing wall 232. When the body 220 of the reversing knob 200 is inserted into the interior of the base 100, the screwing body 231 of the screwing portion 230 abuts against the end of the base 100, and the end of the base 100 can be received in the receiving space 234, thereby restricting the degrees of freedom of the reversing knob 200 relative to the base 100 except in the rotational direction.

[0091] Refer to Figure 1 , Figure 8 and Figure 10 , the liquid delivery device 10 further includes a fixing member 300;

[0092] Refer to Figures 11 to 13 , Figure 16 , the fixing member 300 includes a cover plate 310 and a connecting portion 320 that are connected to each other. The connecting portion 320 passes through the reversing knob 200 and is fixedly connected to the base 100, and the cover plate 310 is attached to the reversing knob 200.

[0093] After the body 220 of the reversing knob 200 is fitted into the interior of the base 100 in an embedded manner, one end of the connecting portion 320 is used to pass through the reversing knob 200 and is relatively fixed to the bottom of the base 100. Then, when the cover plate 310 is attached to the reversing knob 200, axial limiting of the reversing knob 200 can be achieved, avoiding axial relative movement while the reversing knob 200 rotates in the base 100, and further avoiding the reversing knob 200 detaching from the base 100.

[0094] Meanwhile, during the use of the liquid delivery device 10, if the body 220 of the reversing knob 200 moves axially within the base 100, it may cause the body 220 to fail to accurately switch between the first position and the second position within the base 100, thereby preventing the connection between the corresponding connectors. For example, the flow channel formed by the cooperation between the groove 210 on the outer peripheral wall of the body 220 and the inner peripheral wall of the base 100 is axially misaligned with the corresponding connector, resulting in the flow channel being unable to connect the corresponding connectors no matter how the body 220 rotates within the base 100. Therefore, in the present disclosure, by opening the groove 210 on the outer peripheral wall of the body 220, using the groove 210 to cooperate with the inner peripheral wall of the base 100 to form a flow channel, and then passing the fixing member 300 through the reversing knob 200 to restrict the axial movement of the reversing knob 200 relative to the base 100, the stability and reliability of the entire liquid delivery device 10 during use can be better ensured.

[0095] For example, a through hole is provided inside the overall structure of the reversing knob 200. For another example, the connecting portion 320 is a rod-shaped structure. One end of the connecting portion 320 passes through the entire reversing knob 200 through the through hole, and is fixedly connected to the bottom of the base 100. The cover plate 310 of the fixing member 300 is connected to the end of the connecting portion 320, and the cover plate 310 is attached to the reversing knob 200.

[0096] In some embodiments of the present disclosure, referring to Figure 4 、 Figure 9 、 Figure 12 and Figure 13 , the base 100 is provided with a plurality of connection holes 160 on its bottom surface. The end of the connecting portion 320 is provided with a plurality of connection tentacles 321. In response to the connecting portion 320 passing through the reversing knob 200, each connection tentacle 321 is inserted into one of the connection holes 160 and is in interference fit with the corresponding connection hole 160. The end of the connecting portion 320 is fixed to the base 100 by interference fit, and at the same time, in cooperation with the cover plate 310 of the fixing member 300, axial limit of the reversing knob 200 is achieved, avoiding axial relative movement of the reversing knob 200 while rotating within the base 100.

[0097] For example, the base 100 is provided with four connection holes 160 on its bottom surface. The four connection holes 160 are arranged circumferentially. The head end of the connecting portion 320 is correspondingly provided with four connection tentacles 321. The four connection tentacles 321 are also arranged circumferentially. When the connecting portion 320 of the fixing member 300 passes through the reversing knob 200, each connection tentacle 321 at the end of the connecting portion 320 is respectively inserted into one of the connection holes 160, and an interference fit exists between the connection tentacle 321 and the corresponding connection hole 160.

[0098] In summary, this embodiment discloses a liquid delivery device 10, which includes a base 100, a reversing knob 200, and a fixing member 300. An injection connector 111, a connection connector 121, and an output connector 131 are provided on the base 100 to connect to an injection device 20, a containing device 30, and a delivery device 40 respectively, so that the liquid delivery device 10 is connected to the injection device 20, the containing device 30, and the delivery device 40 to form an integral whole.

[0099] The body 220 of the reversing knob 200 is cooperated with the base 100, so that the groove 210 on the outer peripheral wall of the body 220 cooperates with the inner peripheral wall of the base 100 to form a flow channel. The body 220 of the reversing knob 200 can be rotated within the base 100 to a first position and a second position. When the body 220 is rotated to the first position, the flow channel connects the injection connector 111 and the connection connector 121, and the injection device 20 and the containing device 30 are thus connected. When the body 220 is rotated to the second position, the flow channel connects the injection connector 111 and the output connector 131, and the injection device 20 and the delivery device 40 are thus connected. At the same time, since the delivery device 40 is generally used to connect to a patient's body, in order to ensure the stability of the delivery device 40 during the liquid delivery process, the connection connector 121 and the output connector 131 are perpendicularly arranged on the outer side wall of the base 100, and the output connector 131 is configured to be rotatable about its own axis relative to the base 100, so as not to affect the delivery device 40 when the containing device 30 together with the base 100 is turned over, thereby avoiding discomfort to the patient's body caused by the shaking of the delivery device 40.

[0100] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0101] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present disclosure, and they are not intended to limit the protection scope of the present disclosure. Any equivalent embodiments or changes made without departing from the technical spirit of the present disclosure should be included within the protection scope of the present disclosure.

Claims

1. A liquid delivery device, characterized in that: include: A base, wherein the base is provided with an injection joint, a connection joint and an output joint; A reversing knob, wherein the body of the reversing knob is rotatably accommodated in the base, the outer wall of the body is provided with a groove, and the groove cooperates with the inner wall of the base to form a flow channel; the body has a first position and a second position, in response to the body rotating to the first position, the flow channel connects the injection joint and the connection joint, and in response to the body rotating to the second position, the flow channel connects the injection joint and the output joint; The connecting joint and the output joint are arranged perpendicularly to each other on the outer side wall of the base, and the output joint is configured to be rotatable around its own axis relative to the base.

2. The liquid delivery device according to claim 1, characterized in that: The output connector includes a fixed section and a rotating section, the proximal end of the fixed section is connected to the base, the distal end of the fixed section is rotatably connected to the proximal end of the rotating section, and the distal end of the rotating section is used to connect to a conveying device; One of the distal end of the fixed section and the proximal end of the rotating section is provided with an annular groove, and the other is provided with an annular protrusion. The annular protrusion is arranged in the annular groove and can rotate in the annular groove.

3. The liquid delivery device according to claim 2, characterized in that: The liquid delivery device further comprises a sealing member, which is arranged between the annular protrusion and the annular groove.

4. The liquid delivery device according to claim 2, characterized in that: The rotating section is a cone structure, and the outer radial dimension of the cone structure gradually decreases from the proximal end to the distal end.

5. The liquid delivery device according to claim 1, characterized in that: The proximal end of the injection connector is connected to the base, and the distal end of the injection connector is used to connect to an injection device; The injection connector is a cylindrical structure, and the inner diameter of the injection connector gradually increases from the proximal end to the distal end.

6. The liquid delivery device according to claim 1, characterized in that: The liquid delivery device also includes a fixing seat, which includes a base and side walls that are connected to each other. The base is connected to the connecting joint, and the side walls are used to fix the containing device.

7. The liquid delivery device according to claim 6, characterized in that: The side wall includes a plurality of fixing claws, which are circumferentially spaced apart on the base, and are used to abut against and fix the accommodating device together, and each of the fixing claws can be separated from the accommodating device under the action of an external force.

8. The liquid delivery device according to any one of claims 1 to 7, characterized in that: The injection joint, the connection joint and the output joint are all arranged on the side wall of the base, and the injection joint, the connection joint and the output joint are staggered along the axial direction of the base; The flow channel includes a main passage section and an auxiliary passage section, wherein the main passage section extends along the circumferential direction of the body, the main passage section is arranged corresponding to the injection joint along the axial direction of the base, and the main passage section and the injection joint are communicated with each other, or in response to the rotation of the body, the main passage section and the injection joint are communicated with each other; The auxiliary passage section extends at least along the axial direction of the body and is connected to the main passage section. In response to the body rotating to the first position, the auxiliary passage section is connected to the connecting joint. In response to the body rotating to the second position, the auxiliary passage section is connected to the output joint.

9. The liquid delivery device according to any one of claims 1 to 7, characterized in that: The reversing knob further includes a screwing portion connected to the body, wherein the screwing portion is located outside the base; in response to rotation of the screwing portion, the screwing portion drives the body to rotate in the base to the first position or the second position.

10. The liquid delivery device according to claim 9, characterized in that: The radial dimension of the screwing portion is greater than the radial dimension of the body, the end of the base includes an opening structure, the body is accommodated in the base through the opening structure, and the screwing portion abuts against the end of the base.

11. The liquid delivery device according to claim 9, characterized in that: The screwing part includes a screwing body and a fixed wall, the screwing body abuts against an end of the base, and the fixed wall is connected to the screwing body; Along the axial direction of the body, an accommodation space is formed between a portion of the body corresponding to the fixed wall and the fixed wall, and an end portion of the base is accommodated in the accommodation space.

12. The liquid delivery device according to any one of claims 1 to 7, characterized in that: The liquid delivery device also includes a fixing member, which includes a cover plate and a connecting portion that are connected to each other. The connecting portion is penetrated by the reversing knob and is fixedly connected to the base. The cover plate is attached to the reversing knob.

13. The liquid delivery device according to claim 1, characterized in that: The injection connector is used to connect to an injection device, the connection connector is used to connect to a containing device, and the output connector is used to connect to a conveying device.

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