Transfusion device and perfusion system
By designing multiple liquid filters in the infusion device, the diameter of the filter holes is gradually reduced, which solves the problem of blockage of the liquid filter, extends the operating life of the perfusion system and ensures efficient filtration effect.
Patent Information
- Application Number
- CN202420393513.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-02-28
AI Technical Summary
In the existing infusion device, the liquid filter is easily blocked by particles in the perfusion solution during operation, resulting in the filter failure and the infusion system cannot achieve a higher operating life.
An infusion device is designed, which includes a plurality of medical liquid filters connected in series. The diameter of the filter holes of the one furthest from the conveying pump is set to be within 0.2 μm, and the diameter of the filter holes of the other medical liquid filters is greater than 0.2 μm and within 15 μm. Through this design, all particles are avoided from being filtered by a medical liquid filter below 0.2 μm, thereby reducing the risk of blockage.
Through this design, the risk of blockage of the liquid filter can be effectively reduced, the operating life of the perfusion system can be extended, and the efficient filtration effect can be ensured.
Smart Images
Figure CN222605129U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and in particular to an infusion device and a perfusion system. Background Art
[0002] The perfusion fluid is used to provide cooling and lubrication for the blood pumping catheter transmission system. Before finally entering the blood pumping catheter, it needs to pass through the drug filter installed at the entrance of the blood pumping catheter. Since part of the perfusion fluid will eventually enter the body, the perfusion fluid filtered by the drug filter is required to be sterile.
[0003] In existing products, a liquid medicine filter with a pore size of 0.2 μm is generally used to ensure a filtering effect at the bacterial filtering level. However, after the liquid medicine filter has been working for a period of time, the small holes on the liquid medicine filter membrane are easily blocked by particles in the perfusion liquid, causing the liquid medicine filter to fail. Therefore, the existing infusion device cannot enable the perfusion system to achieve a high operating life. Utility Model Content
[0004] The embodiments of the present application provide an infusion device and a perfusion system, which can reduce the risk of clogging of the drug liquid filter to ensure that the perfusion system achieves a longer operating life.
[0005] In a first aspect, an embodiment of the present application provides an infusion device, comprising: an infusion tube, a delivery pump and a filter assembly arranged in the infusion tube, the filter assembly being connected to the pump outlet of the delivery pump, the filter assembly comprising two or more drug liquid filters connected in series, and among the multiple drug liquid filters, the filter pore diameter of the one farthest from the delivery pump is within a first preset value, and the filter pore diameters of the remaining drug liquid filters are all greater than the first preset value.
[0006] In some embodiments, the first preset value is 0.2 μm.
[0007] In some embodiments, among the multiple liquid medicine filters, the filter element of the one closest to the delivery pump is a capsule structure.
[0008] In some embodiments, among the multiple liquid medicine filters, the filter element of the one farthest from the delivery pump is a membrane structure.
[0009] In some embodiments, the pore diameters of the liquid medicine filters decrease in sequence in a direction away from the pump outlet.
[0010] In some embodiments, the filter assembly includes two liquid medicine filters, and along the direction away from the pump outlet, the filter pore diameters of the liquid medicine filters range from 1.0 μm to 1.2 μm and from 0.18 μm to 0.2 μm, respectively.
[0011] In some embodiments, the filter assembly includes three liquid medicine filters, and along the direction away from the pump outlet, the filter pore diameters of the liquid medicine filters range from 1.8 μm to 2 μm, 1.0 μm to 1.2 μm, and 0.18 μm to 0.2 μm, respectively.
[0012] In some embodiments, the filter assembly comprises four liquid medicine filters, and along the direction away from the pump outlet, the filter pore diameters of the liquid medicine filters are 4.7 μm-5.0 μm, 1.8 μm-2.0 μm, 1.0 μm-1.2 μm, and 0.18 μm-0.2 μm, respectively.
[0013] In some embodiments, the delivery pump is a piston pump.
[0014] In a second aspect, an embodiment of the present application provides an infusion system, including the above-mentioned infusion device, and also including: an infusion liquid container, the infusion liquid container is provided with a accommodating chamber inside, the accommodating chamber is used to accommodate the infusion liquid to be used, and the pump inlet of the delivery pump is connected to the accommodating chamber; a blood pumping catheter, the inlet of the blood pumping catheter is connected to the drug liquid filter farthest from the delivery pump.
[0015] In some embodiments, the perfusion system also includes: an auxiliary filter, the filter pore diameter of the auxiliary filter is within a first preset value, the liquid inlet of the auxiliary filter is connected to the liquid outlet of the drug filter farthest from the delivery pump, and the liquid outlet of the auxiliary filter is connected to the inlet of the blood pump catheter.
[0016] The infusion device and perfusion system of the embodiment of the present application, wherein the infusion device includes an infusion tube, a delivery pump and a filter assembly arranged on the infusion tube, the filter assembly is connected to the pump outlet of the delivery pump, and the filter assembly includes two or more drug liquid filters connected in series, and among the multiple drug liquid filters, the filter pore diameter of the one farthest from the delivery pump is within 0.2μm, and the filter pore diameters of the remaining drug liquid filters are all greater than 0.2μm and within 15μm. During the operation of the infusion device, the filter pore diameter of the drug liquid filter farthest from the delivery pump is below 0.2μm, which can ensure the filtering effect of the bacterial filtering level, and the drug liquid filter near the pump outlet can filter particles with relatively large diameters to avoid all particles in the perfusion liquid being filtered by the drug liquid filter below 0.2μm, thereby reducing the risk of blockage of the drug liquid filter, and ensuring that the perfusion system using the infusion device achieves a higher operating life. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0018] Figure 1A schematic diagram of the structure of an infusion device provided in an embodiment of the present application;
[0019] Figure 2 A schematic diagram of the structure of the perfusion system provided in an embodiment of the present application.
[0020] In the figure: 1. infusion tube; 2. delivery pump; 3. drug solution filter; 4. perfusion liquid container; 401. containing chamber; 5. auxiliary filter; 6. blood pump catheter. DETAILED DESCRIPTION
[0021] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.
[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0023] At present, the perfusion system used for human body infusion generally only uses a liquid medicine filter with a pore size of 0.2 μm to ensure the filtering effect of bacterial filtering level. The inventor of the present application found that after the liquid medicine filter has been working for a period of time, the small holes on the liquid medicine filter membrane are easily blocked by particles in the perfusion liquid, thereby causing the liquid medicine filter to fail. Therefore, the existing infusion device cannot make the perfusion system achieve a high operating life.
[0024] In order to solve the problems in the prior art, the present application provides an infusion device and an infusion system, which are described in detail below in conjunction with the accompanying drawings.
[0025] Figure 1 A schematic diagram of the structure of an infusion device provided in an embodiment of the present application.
[0026] See also Figure 1 The embodiment of the present application provides an infusion device, which is suitable for infusing liquid into a target environment (such as a human body, an animal body, etc.), including an infusion tube 1, a delivery pump 2 arranged on the infusion tube 1, and a filter assembly, that is, the delivery pump 2 and the filter assembly are connected through the infusion tube 1. Among them, the delivery pump 2 has a pump inlet and a pump outlet, and the delivery pump 2 is used to deliver the perfusion liquid at the pump inlet to the pump outlet. The filter assembly is connected to the pump outlet of the delivery pump 2, and the filter assembly includes more than two drug liquid filters 3 connected in series. Among the multiple drug liquid filters 3, the filter hole diameter of the one farthest from the delivery pump 2 is within a first preset value, and the filter hole diameters of the remaining drug liquid filters 3 are all greater than the first preset value.
[0027] During the operation of the infusion device, the filter pore diameter of the medicine liquid filter 3 farthest from the delivery pump 2 is the smallest to ensure the final filtering effect of the filtering component. The medicine liquid filter 3 close to the pump outlet can filter particles with relatively large diameters to avoid all particles in the perfusion liquid being filtered by the medicine liquid filter 3 farthest from the delivery pump 2, thereby reducing the risk of blockage of each medicine liquid filter 3 and ensuring that the perfusion system using the infusion device achieves a longer operating life.
[0028] In some embodiments, the first preset value may be 0.05 μm, 0.1 μm, 0.2 μm, 0.3 μm or 0.4 μm. According to the current insoluble particle limit requirements for infusion, in some embodiments, the first preset value is preferably 0.2 μm to ensure the filtration effect of the bacterial filtration level.
[0029] In some embodiments, the filter element of the one of the multiple liquid medicine filters 3 closest to the delivery pump 2 is a capsule structure. Specifically, the capsule structure filter element is columnar, and the columnar filter element is provided with a plurality of three-dimensional staggered filter holes, so it is not easy to be blocked compared to the membrane structure filter element, which can further improve the overall operating life of the perfusion system.
[0030] In some embodiments, among the multiple liquid medicine filters 3, the filter element of the one farthest from the delivery pump 2 is of membrane structure. The filter element of the membrane structure is in sheet form, and the sheet filter element is provided with a plurality of spaced filter holes, which has a higher filtering accuracy than the filter element of the capsule structure, and can further ensure that the overall filtering effect of the filter assembly meets expectations.
[0031] In some embodiments, the filter pore diameters of each drug liquid filter 3 decrease successively in the direction away from the pump outlet, and the particles in the perfusion liquid can be filtered multiple times. Using multiple drug liquid filters 3 to share the particles from the perfusion liquid can simultaneously improve the service life of multiple drug liquid filters 3 and meet the expected needs of the product.
[0032] In some embodiments, the filter component includes two liquid medicine filters 3. Along the direction away from the pump outlet, the filter pore diameter ranges of each liquid medicine filter 3 are 1.0μm-1.2μm and 0.18μm-0.2μm respectively. By using the above-mentioned filter component, the operating life of the perfusion system can reach more than 72 hours, which can support medical workers to complete larger operations.
[0033] In some embodiments, the filter assembly includes three liquid medicine filters 3, and along the direction away from the pump outlet, the filter pore diameter ranges of each liquid medicine filter 3 are 1.8μm-2μm, 1.0μm-1.2μm, and 0.18μm-0.2μm, respectively, which can further increase the operating life of the perfusion system to more than 80 hours.
[0034] In some embodiments, the filter assembly includes four liquid medicine filters 3. Along the direction away from the pump outlet, the filter pore diameter ranges of each liquid medicine filter 3 are 4.7μm-5.0μm, 1.8μm-2.0μm, 1.0μm-1.2μm, and 0.18μm-0.2μm, respectively, which can further increase the operating life of the perfusion system to more than 96 hours.
[0035] In some embodiments, the delivery pump 2 is a piston pump with a simple structure and easy maintenance.
[0036] In some embodiments, the delivery pump 2 is a piston pump combination, and the filling requirements are met by connecting multiple piston pumps in series, in parallel, or in series and in parallel.
[0037] Figure 2 A schematic diagram of the structure of the perfusion system provided in an embodiment of the present application.
[0038] like Figure 2 As shown, the embodiment of the present application also provides a perfusion system, which is a medical device suitable for inputting perfusion liquid into a target environment (such as a human body, an animal body, etc.). Exemplarily, the medical device may be a blood pump catheter device, a balloon catheter device, or a pulse ablation device, etc. The perfusion system includes the infusion device in the above embodiment, and also includes: a perfusion liquid container 4, the perfusion liquid container 4 is provided with a accommodating chamber 401 inside, the accommodating chamber 401 is used to accommodate the perfusion liquid to be used, and the pump inlet of the delivery pump 2 is connected to the accommodating chamber 401; a blood pump catheter 6, and the inlet of the blood pump catheter 6 is connected to the drug liquid filter 3 farthest from the delivery pump 2. Since the perfusion system includes the infusion device in the above embodiment, it has at least all the beneficial effects brought by the above embodiment, which will not be repeated here one by one.
[0039] In some embodiments, the perfusion system further includes: an auxiliary filter 5, the filter pore diameter of the auxiliary filter 5 is within a first preset value, specifically, in this embodiment, the first preset value is 0.2 μm. The liquid inlet of the auxiliary filter 5 is connected to the liquid outlet of the liquid filter 3 farthest from the delivery pump 2, and the liquid outlet of the auxiliary filter 5 is connected to the inlet of the blood pumping catheter 6. The auxiliary filter 5 can further ensure that the perfusion fluid entering the blood pumping catheter 6 meets the expected requirements, and avoid discomfort to the patient due to the perfusion fluid entering the blood pumping catheter 6 containing larger particles.
[0040] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.
Claims
1. An infusion device, characterized in that: include: An infusion tube, a delivery pump and a filter assembly arranged on the infusion tube, wherein the filter assembly is connected to the pump outlet of the delivery pump, and the filter assembly includes two or more drug liquid filters connected in series. Among the multiple drug liquid filters, the filter pore diameter of the one farthest from the delivery pump is within a first preset value, and the filter pore diameters of the remaining drug liquid filters are all larger than the first preset value.
2. The infusion device according to claim 1, characterized in that: The first preset value is 0.2 μm.
3. The infusion device according to claim 1, characterized in that: Among the plurality of liquid medicine filters, the filter element of the one closest to the delivery pump is in a capsule structure.
4. The infusion device according to claim 1, characterized in that: Among the plurality of liquid medicine filters, the filter element of the one farthest from the delivery pump is of a membrane structure.
5. The infusion device according to claim 1, characterized in that: Along the direction away from the pump outlet, the filter hole diameters of the liquid medicine filters decrease in sequence.
6. The infusion device according to claim 5, characterized in that: The filter assembly comprises two liquid medicine filters, and along the direction away from the pump outlet, the filter pore diameters of the liquid medicine filters are in the range of 1.0 μm-1.2 μm and 0.18 μm-0.2 μm, respectively.
7. The infusion device according to claim 5, characterized in that: The filter assembly comprises three liquid medicine filters, and along the direction away from the pump outlet, the filter pore diameters of the liquid medicine filters are 1.8 μm-2 μm, 1.0 μm-1.2 μm, and 0.18 μm-0.2 μm, respectively.
8. The infusion device according to claim 5, characterized in that: The number of the liquid medicine filters included in the filter assembly is four. Along the direction away from the pump outlet, the filter pore diameter ranges of each liquid medicine filter are 4.7μm-5.0μm, 1.8μm-2.0μm, 1.0μm-1.2μm, and 0.18μm-0.2μm, respectively.
9. A perfusion system, characterized in that: The infusion device according to any one of claims 1 to 8, further comprising: A perfusion liquid container, wherein a containing cavity is provided inside the perfusion liquid container, the containing cavity is used to contain the perfusion liquid to be used, and the pump inlet of the delivery pump is connected to the containing cavity; A blood pumping catheter, wherein the inlet of the blood pumping catheter is connected to the drug liquid filter farthest from the delivery pump.
10. The perfusion system according to claim 9, characterized in that Also includes: An auxiliary filter, wherein the filter pore diameter of the auxiliary filter is within a first preset value, the liquid inlet of the auxiliary filter is connected to the liquid outlet of the liquid filter farthest from the delivery pump, and the liquid outlet of the auxiliary filter is connected to the inlet of the blood pumping catheter.