Anti-pollution extension tube for injection pump

Abstract

The utility model relates to the technical field of medical instruments, in particular to an anti-pollution extension tube for an injection pump, which comprises an extension tube body, a first joint tube and a second joint tube are respectively arranged at two ends of the extension tube body, the second joint tube comprises a main tube section and a branch tube section, and the branch tube section is arranged on the side surface of the main tube section. An exhaust pipe is arranged at the top of the main pipe section; a separation ring plate is further arranged in the main pipe section, and a through hole is formed in the middle of the separation ring plate. The containing cavity in the main pipe section is divided into an upper cavity body and a lower cavity body through the partition ring plate. A buoyancy ball is further arranged in the lower cavity, and when the lower cavity is filled with liquid, the buoyancy ball can block the through hole. After the branch tube section is separated from the needle cylinder, the buoyancy ball blocks the through hole, so that the lower cavity is kept in a closed environment, blood can be prevented from flowing back into the extension tube body, and the risk that the extension tube body is blocked by blood clots is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an anti-pollution extension tube for an injection pump. Background Art

[0002] As a precision medical device, the syringe pump is widely used in clinical infusion therapy, especially in the fields of intensive care, anesthesiology, and tumor chemotherapy. Its accurate drug infusion capability is crucial to the safety of patient treatment. The extension tube is a key connecting component between the syringe pump and the patient's venous access, mainly used to extend the infusion path and improve operational flexibility. However, the existing extension tubes still have the following technical problems in actual use:

[0003] When replacing a syringe or a needle, the residual liquid in the pipeline is prone to dripping due to gravity. This not only causes drug waste, but also may pollute the environment; in addition, air entering the pipeline will form bubbles, affecting the infusion accuracy and even causing the risk of air embolism.

[0004] Therefore, how to prevent liquid medicine from leaking and air from entering the pipeline during the replacement operation of the syringe is a technical problem that needs to be solved urgently in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a contamination-proof extension tube for an injection pump, in view of the problem that when replacing a syringe or a syringe, the residual liquid medicine in the pipeline is easy to drip due to gravity, which not only causes a waste of medicine, but also may pollute the environment; in addition, air entering the pipeline will form bubbles, affect the infusion accuracy, and even cause the risk of air embolism.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An anti-pollution extension tube for an injection pump comprises an extension tube body, wherein two ends of the extension tube body are respectively provided with a first joint tube and a second joint tube, wherein the first joint tube is used for connecting an indwelling venous access;

[0008] The second joint pipe comprises a main pipe section and a branch pipe section, wherein the main pipe section is communicated with the extension pipe body, and the branch pipe section is used to connect a syringe, and the branch pipe section is arranged on the side of the main pipe section.

[0009] The central axis of the main pipe section is arranged to coincide with the central axis of the extension pipe body, the inner diameter of the main pipe section is larger than the inner diameter of the extension pipe body, and an exhaust pipe is arranged on the top of the main pipe section; a separation ring plate is also arranged inside the main pipe section, and a through hole is arranged in the middle of the separation ring plate; the separation ring plate divides the accommodation cavity inside the main pipe section into an upper cavity and a lower cavity, and the branch pipe section and the exhaust pipe are connected to the upper cavity;

[0010] A buoyancy ball is further arranged in the lower cavity. When the lower cavity is filled with liquid, the buoyancy ball can block the through hole.

[0011] Preferably, the branch pipe section is made of a rigid material.

[0012] Preferably, the branch pipe section is obliquely arranged on the side of the main pipe section, and the extension line of the central axis of the branch pipe section passes through the through hole.

[0013] Preferably, the partition ring plate is arranged in a frustum structure.

[0014] Preferably, the extension line of the central axis of the exhaust pipe passes through the partition ring plate.

[0015] Preferably, the length of the lower cavity is greater than the length of the upper cavity.

[0016] Preferably, a filtering component is arranged inside the extension tube body, and the filtering component is used to filter out the microparticles carried in the liquid medicine.

[0017] Preferably, a base is arranged on the extension tube body, and the side of the base facing the human skin has adhesiveness, and the base is used to fix the extension tube body.

[0018] Preferably, two bases are arranged, and the distance between the two bases is adjustable.

[0019] Preferably, a strap is further arranged on the extension tube body, and the strap is used for tying and connecting with a human limb.

[0020] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0021] 1. For the anti-pollution extension tube for an injection pump described in the present utility model, part of the drug in the upper cavity is pumped out by the exhaust pipe. After emptying the residual drug in the branch pipe section, the syringe is replaced. In this way, it can avoid drug dripping into the external environment and causing pollution. At the same time, after separating the branch pipe section from the syringe, the buoyancy ball blocks the through hole, so that the lower cavity maintains a sealed environment, which can avoid blood from flowing back into the extension tube body, thereby reducing the risk of the extension tube body being blocked by blood clots. On the other hand, after the syringe replacement is completed, keep the exhaust pipe in an open state. In this way, during the process of replenishing the liquid medicine to the upper cavity, air can be discharged from the exhaust pipe to the external environment, avoiding the risk of air invading the pipeline below the lower cavity and causing air embolism.

[0022] 2. For the anti-pollution extension tube for an injection pump according to the present utility model, the extension line of the central axis of the exhaust pipe passes through the partition ring plate. With this structural arrangement, during the operation of injecting the liquid medicine into the upper cavity through the exhaust pipe using a syringe with a needle, the direct impact of water flow on the buoyancy ball is avoided, thereby further improving the stability and reliability of the buoyancy ball blocking the through hole;

[0023] 3. For the anti-pollution extension tube for an injection pump according to the present utility model, a base is provided on the extension tube body, and the side of the base facing the human skin has adhesiveness, and the base is used to fix the extension tube body. The base is provided in two, and the distance between the two bases is adjustable. With this structural arrangement, the extension tube body can be fixed on the human skin by using the base, thereby further improving the convenience of use of the present invention; and, by using the base, the contact between the extension tube body and the human skin is changed from line contact to surface contact, reducing the risk of the extension tube body pressing and injuring the skin during use; on the other hand, setting two bases in this embodiment can further improve the fixing stability, and the extension tube body can be separated from the human skin by using the two bases, thereby further reducing the risk of pressing and injuring the human skin during the use of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of an anti-pollution extension tube for an injection pump;

[0025] Figure 2 is a schematic cross-sectional structure diagram of the second joint tube part.

[0026] Reference numerals in the figure: 1 - extension tube body, 2 - first joint tube, 3 - second joint tube, 4 - main pipe section, 5 - branch pipe section, 6 - exhaust pipe, 7 - partition ring plate, 8 - buoyancy ball, 9 - upper cavity, 10 - lower cavity, 11 - through hole, 13 - filter component, 14 - base, 15 - strap. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The present utility model will be described in detail below with reference to the accompanying drawings.

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model.

[0029] Accordingly, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model claimed, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0030] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0031] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do 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 thus should not be construed as a limitation of the present utility model. In addition, terms such as "first" and "second" are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0033] Embodiment 1: As Figure 1 and Figure 2 shown, an anti-pollution extension tube for an injection pump according to the present utility model includes an extension tube body 1, and a first joint tube 2 and a second joint tube 3 are respectively arranged at both ends of the extension tube body 1. The first joint tube 2 is used to connect the indwelling venous access;

[0034] The second joint tube 3 includes a main tube section 4 and a branch tube section 5. The main tube section 4 is communicated with the extension tube body 1. The branch tube section 5 is used to connect a syringe, and the branch tube section 5 is arranged on the side of the main tube section 4.

[0035] The central axis of the main tube section 4 coincides with the central axis of the extension tube body 1. The inner diameter of the main tube section 4 is larger than the inner diameter of the extension tube body 1. An exhaust pipe 6 is arranged at the top of the main tube section 4. A partition ring plate 7 is further arranged in the main tube section 4, and a through hole 11 is arranged in the middle of the partition ring plate 7. The partition ring plate 7 divides the accommodation cavity inside the main tube section 4 into an upper cavity 9 and a lower cavity 10. The branch tube section 5 and the exhaust pipe 6 are communicated with the upper cavity 9.

[0036] A buoyancy ball 8 is further arranged in the lower cavity 10. When the lower cavity 10 is filled with liquid, the buoyancy ball 8 can block the through hole 11.

[0037] For an anti-pollution extension tube for an injection pump according to the present invention, part of the drug in the upper cavity 9 is pumped out by the exhaust pipe 6. After emptying the residual drug in the branch pipe section 5, the operation of replacing the syringe is carried out, so as to avoid drug dripping into the external environment and causing pollution. At the same time, after separating the branch pipe section 5 from the syringe, the buoyancy ball 8 blocks the through hole 11, so that the lower cavity 10 maintains a closed environment, which can avoid blood refluxing back into the extension tube body 1, thereby reducing the risk of the extension tube body 1 being blocked by blood clots. On the other hand, after the syringe is replaced, keep the exhaust pipe 6 in an open state. In this way, during the process of replenishing the liquid medicine into the upper cavity 9, air can be discharged from the exhaust pipe 6 to the external environment, avoiding the risk of air invading the pipeline below the lower cavity 10 and causing air embolism.

[0038] Specifically, when performing drug infusion in this embodiment, connect the first joint tube 2 to the patient's venous indwelling access, and connect the branch pipe section 5 of the second joint tube 3 to the liquid outlet of the syringe; start the injection pump to perform liquid medicine infusion, and the liquid medicine flows through the branch pipe section 5, the upper cavity 9, the lower cavity 10, the extension tube body 1, and the venous access in sequence. During this process, the buoyancy ball 8 moves towards the bottom side of the lower cavity 10 under the action of liquid pressure, so that the through hole 11 is opened, and then the liquid medicine can smoothly flow from the upper cavity 9 into the lower cavity 10. When replacing the syringe, open the cap or valve of the exhaust pipe 6, and slowly pump out the residual liquid medicine in the upper cavity 9 and the branch pipe section 5 through the exhaust pipe 6 until there is no liquid residue in the branch pipe section 5; close the exhaust pipe 6, and separate the old syringe from the branch pipe section 5. At this time, the buoyancy ball 8 continuously blocks the through hole 11 to prevent blood reflux and air from invading the lower pipeline. After installing the new syringe, keep the exhaust pipe 6 in an open state, start the injection pump to slowly infuse the liquid medicine, the liquid medicine enters the upper cavity 9, and the air is discharged to the external environment through the exhaust pipe 6 until the liquid medicine fills the exhaust pipe 6 and then stops. Subsequently, close the cap or valve of the exhaust pipe 6 and resume the normal infusion rate.

[0039] Furthermore, in the operation of replenishing the liquid medicine into the upper cavity 9 and the branch pipe section 5 in this embodiment, a syringe with a needle can also be used to inject the liquid medicine through the exhaust pipe 6. In this way, the water flow can be avoided from disturbing the buoyancy ball 8, thereby further avoiding blood reflux and air from invading the lower pipeline.

[0040] As a preferred embodiment, on the basis of the above manner, further, the branch pipe section 5 is made of a rigid material. With this structural arrangement, on the one hand, it can avoid the interruption of the injection of the liquid medicine caused by the deformation and bending of the branch pipe section 5, improving the practicability of the present invention in actual use; on the other hand, it can ensure that the main pipe section 4 always maintains a vertical fixed state, thus improving the tightness and reliability of the buoyancy ball 8 blocking the through hole 11.

[0041] As a preferred embodiment, on the basis of the above manner, further, the branch pipe section 5 is inclined and arranged on the side of the main pipe section 4, and the extension line of the central axis of the branch pipe section 5 passes through the through hole 11. With this structural arrangement, during the operation of injecting the liquid medicine, the water flow can directly impact the buoyancy ball 8, increasing the opening gap of the through hole 11, thereby improving the smoothness of the liquid medicine flowing into the lower cavity 10.

[0042] As a preferred embodiment, on the basis of the above manner, further, the partition ring plate 7 is arranged in a frustum structure. With this structural arrangement, it can better limit the buoyancy ball 8, avoiding the deviation of the buoyancy ball 8 from the position of the through hole 11 when replacing the syringe, thereby improving the reliability of the buoyancy ball 8 blocking the through hole 11.

[0043] As a preferred embodiment, on the basis of the above manner, further, the extension line of the central axis of the exhaust pipe 6 passes through the partition ring plate 7. With this structural arrangement, during the operation of injecting the liquid medicine into the upper cavity 9 through the exhaust pipe 6 using a syringe with a needle, it avoids the direct impact of the water flow on the buoyancy ball 8, thereby further improving the stability and reliability of the buoyancy ball 8 blocking the through hole 11.

[0044] As a preferred embodiment, on the basis of the above manner, further, the length of the lower cavity 10 is greater than the length of the upper cavity 9. With this structural arrangement, the amount of the liquid medicine drawn out from the upper cavity 9 and the amount of the liquid medicine supplemented into the upper cavity 9 can be reduced, reducing the waste of the liquid medicine.

[0045] Example 2: As Figure 1 shown, for an anti-pollution extension tube for an injection pump according to the present invention, on the basis of the above manner, further, a filtering component 13 is arranged inside the extension tube body 1, and the filtering component 13 is used to filter out the fine particles carried in the liquid medicine. With this structural arrangement, the use safety of the present invention is improved.

[0046] Example 3: As Figure 1As shown, for an anti-pollution extension tube for an injection pump according to the present utility model, on the basis of the above manner, further, a base 14 is provided on the extension tube body 1, and one side of the base 14 facing the human skin has adhesiveness, and the base 14 is used to fix the extension tube body 1. The base 14 is provided in two, and the distance between the two bases 14 is adjustable.

[0047] In this embodiment, the extension tube body 1 can be fixed on the human skin by using the base 14, thereby further improving the convenience of use of the present novelty; and, by using the base 14, the contact between the extension tube body 1 and the human skin can be changed from line contact to surface contact, reducing the risk of the extension tube body 1 pressing and injuring the skin during use; on the other hand, setting two bases 14 in this embodiment can further improve the fixing stability, and the extension tube body 1 can be separated from the human skin by using the two bases 14, thereby further reducing the risk of pressing and injuring the human skin during the use of the present novelty.

[0048] As a preferred embodiment, on the basis of the above manner, further, a strap 15 is also provided on the extension tube body 1, and the strap 15 is used for binding connection with a human limb. With this structural setting, the fixing stability of the extension tube body 1 is further improved.

[0049] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An anti-pollution extension tube for a syringe pump, characterized in that: It comprises an extension tube body, wherein a first joint tube and a second joint tube are respectively arranged at two ends of the extension tube body, wherein the first joint tube is used to connect an indwelling venous access; the second joint tube comprises a main tube section and a branch tube section, wherein the main tube section is connected to the extension tube body, and the branch tube section is used to connect a syringe, and the branch tube section is arranged on the side of the main tube section, wherein the central axis of the main tube section coincides with the central axis of the extension tube body, the inner diameter of the main tube section is larger than the inner diameter of the extension tube body, and an exhaust pipe is arranged on the top of the main tube section; a dividing ring plate is also arranged inside the main tube section, wherein a through hole is arranged in the middle of the dividing ring plate; the dividing ring plate divides the accommodating cavity inside the main tube section into an upper cavity and a lower cavity, and the branch tube section and the exhaust pipe are connected to the upper cavity; a buoyancy ball is also arranged inside the lower cavity, and when the lower cavity is filled with liquid, the buoyancy ball can block the through hole.

2. The anti-pollution extension tube for the injection pump according to claim 1, characterized in that: The branch pipe section is made of hard material.

3. The anti-pollution extension tube for the injection pump according to claim 2, characterized in that: The branch pipe section is obliquely arranged on the side of the main pipe section, and the extension line of the central axis of the branch pipe section passes through the through hole.

4. The anti-pollution extension tube for the injection pump according to claim 1, characterized in that: The separation ring plate is configured as a truncated cone structure.

5. The anti-pollution extension tube for the injection pump according to claim 4, characterized in that: An extension line of the central axis of the exhaust pipe passes through the separation ring plate.

6. The anti-pollution extension tube for a syringe pump according to any one of claims 1 to 5, characterized in that: The length of the lower cavity is greater than the length of the upper cavity.

7. The anti-pollution extension tube for the injection pump according to claim 6, characterized in that: A filter component is arranged inside the extension tube body, and the filter component is used to filter out particles carried in the medicine solution.

8. The anti-pollution extension tube for a syringe pump according to claim 1, characterized in that: The extension tube body is provided with a base, a side of the base facing the human skin is sticky, and the base is used to fix the extension tube body.

9. The anti-pollution extension tube for the injection pump according to claim 8, characterized in that: The number of bases is two, and the distance between the two bases is adjustable.

10. The anti-pollution extension tube for the injection pump according to claim 9, characterized in that: The extension tube body is also provided with a binding strap, and the binding strap is used for binding and connecting with a human limb.

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