Blockage conversion device for blood filter

Abstract

The utility model discloses a blood filter blocking conversion device which comprises a pipe body and a plurality of film terminals, the upper end and the lower end of the pipe body are communicated, a puncture device is arranged on the upper portion of the pipe body, a blood return device is installed on the lower portion of the pipe body, a first connecting pipe connected with a blood filter is arranged on the side face of the pipe body, and the film terminals are connected with the first connecting pipe. The thin film terminals are installed at the pipe opening of the first connecting pipe, the thin film terminals are also installed at the upper end of the puncture device, and the blood return device is matched with the two thin film terminals; when the device is used and the blood filter needs to be replaced, only the puncture device needs to be driven to slide down, so that the puncture device is communicated with the blood return device, arterial blood does not pass through the blood filter but directly flows back through the blood return device, the blood filter can be directly replaced, and the problem of blood leakage does not need to be worried about.

Description

TECHNICAL FIELD

[0001] The utility model relates to a blood filtration filter block conversion device. BACKGROUND

[0002] The effects of blood filtration include removing waste, regulating water and electrolyte balance, regulating acid-base balance, etc., as follows:

[0003] 1. Removing waste

[0004] Blood filtration can help remove waste and metabolites produced by metabolism in the body, such as urea, creatinine, uric acid, etc., thereby reducing the burden on the kidneys and reducing the accumulation of toxins.

[0005] 2. Regulating water and electrolyte balance

[0006] Blood filtration can also help excrete water from the body and regulate electrolyte balance, such as sodium, potassium, calcium, and phosphorus, which helps maintain water and electrolyte balance to maintain normal physiological functions.

[0007] 3. Regulating acid-base balance

[0008] Blood filtration can also help maintain acid-base balance in the body, keeping the blood pH within a normal range and maintaining relatively stable acid-base balance.

[0009] In actual use, there is a certain probability of blockage of the blood filtration filter. When blockage occurs, the efficiency of the blood filtration filter is insufficient, the efficiency of blood purification is reduced, and even blood cannot be purified.

[0010] At this time, the blood filtration filter needs to be replaced. The traditional replacement method requires pulling out the blood filtration filter, but there is a risk of blood leakage.

[0011] Based on the above problems, we designed a blood filtration filter block conversion device that can avoid blood leakage. CONTENT OF THE UTILITY MODEL

[0012] The technical problem to be solved by the utility model is to provide a blood filtration filter block conversion device that can avoid blood leakage.

[0013] To solve the above problems, the utility model adopts the following technical solutions:

[0014] A blood filtration filter block conversion device, comprising a tube body and a film terminal, the upper and lower ends of the tube body are through, a puncture device is arranged at the upper part of the tube body, a blood return device is installed at the lower part of the tube body, a first connecting pipe connected with the blood filtration filter is arranged on the side surface of the tube body, a plurality of film terminals are arranged, the film terminals are installed at the pipe opening of the first connecting pipe and the upper end of the puncture device, and the blood return device is matched with two film terminals.

[0015] Preferably, the puncture device comprises a rotating tube, an inner tube and a puncture tube, the inner tube is installed at the axis of the rotating tube and is inserted into the tube body at the lower end, the film terminal is installed at the upper end of the inner tube, the puncture tube is installed at the lower end of the inner tube, the lower end of the puncture tube is integrally formed with a puncture needle by injection molding, a bearing is installed between the inner tube and the rotating tube, the rotating tube is threadedly connected with the tube body, a guide cap is embedded at the upper end of the tube body, the inner tube passes through the guide cap, a sliding groove is arranged at the inner wall of the guide cap, a sliding strip matched with the sliding groove is arranged at the outer wall of the inner tube; a sealing ring is clamped at the outer wall of the puncture tube, the sealing ring and the inner wall of the inner tube form a seal, and the puncture needle is matched with the blood return device.

[0016] Preferably, when the puncture needle penetrates the blood return device downward, the sealing ring is blocked at the first connecting pipe.

[0017] Preferably, the blood return device comprises a blood return pipe, the blood return pipe is threadedly connected with the tube body, an insertion pipe is arranged at the upper end of the blood return pipe, the insertion pipe is attached to the inner wall of the tube body, a rubber film is fixed at the inner wall of the insertion pipe close to the top, a sealing ring is arranged between the blood return pipe and the tube body, a second connecting pipe connected with the blood filter is arranged at the outer wall of the blood return pipe, the film terminal is installed at the second connecting pipe, a third connecting pipe is arranged at the bottom of the blood return pipe, and the film terminal is installed at the third connecting pipe; the puncture needle penetrates the rubber film after descending.

[0018] Preferably, a pattern for anti-skid is formed on the outer wall of the rotating tube by injection molding.

[0019] Preferably, the tube body and the insertion pipe are both transparent PVC pipes.

[0020] The beneficial effects of the utility model are as follows:

[0021] When the blood filter needs to be replaced during use of the device, only the puncture device needs to be driven to slide downward, so that the puncture device is in communication with the blood return device, at this time, the arterial blood does not pass through the blood filter, but directly returns through the blood return device, at this time, the blood filter can be directly replaced, without worrying about the problem of blood leakage, the operation is simple and convenient, and the device is suitable for popularization and use. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating creative labor.

[0023] Figure 1 is a structural schematic view of the present utility model;

[0024] Figure 2 is a half sectional view of the present device;

[0025] Figure 3 is a mounting schematic view of the puncture device;

[0026] Figure 4 is a top view of the guide cap;

[0027] Figure 5 is a mounting schematic view of the blood return device. DETAILED DESCRIPTION

[0028] All features disclosed in this specification, and / or all steps of any methods or processes disclosed in this specification, can be combined in any combination, except combinations where at least some of the features and / or steps are mutually exclusive.

[0029] Any feature disclosed in this specification, unless stated otherwise, can be replaced by alternative features or equivalents having the same or a similar effect. That is, unless stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.

[0030] In the description of the present utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "central", "end", "length", "outer end" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model.

[0031] In addition, in the description of the present utility model, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0032] In the present utility model, unless otherwise explicitly specified and limited, the terms "set", "sleeved", "connected", "penetrated", "inserted" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.

[0033] ReferenceFigure 1 The blood filter blocking conversion device shown in the figure comprises a pipe body 1 and a film terminal 2, the upper and lower ends of the pipe body 1 are penetrated, a puncture device 3 is arranged at the upper part of the pipe body 1, a blood return device 4 is installed at the lower part of the pipe body 1, a first connecting pipe 5 for connecting the blood filter is arranged on the side of the pipe body 1, the film terminal 2 is arranged in plurality, the film terminal 2 is installed at the pipe opening of the first connecting pipe 5, the film terminal 2 is also installed at the upper end of the puncture device 3, and the blood return device 4 is matched with two film terminals 2.

[0034] In the above technical solution, the first connecting pipe 5 is connected with the blood inlet of the blood filter through the pipeline, and the blood return device 4 is connected with the blood outlet of the blood filter and the human body vein.

[0035] When the blood filter works normally, the arterial blood enters the pipe body 1 through the puncture device 3, and then enters the blood filter through the first connecting pipe, the blood filtered by the blood filter enters the blood return device 4, and then flows into the vein.

[0036] When the blood filter needs to be replaced, the puncture device 3 penetrates downwardly through the blood return device 4, at this time, the arterial blood directly returns to the vein without flowing out from the first connecting pipe 5.

[0037] After the replacement is completed, the puncture device 3 is reset.

[0038] Referring to Figure 2 , Figure 3 and Figure 4 , the puncture device 3 comprises a rotating pipe 31, an inner pipe 32 and a puncture pipe 33, the inner pipe 32 is installed at the axis of the rotating pipe 31 and the lower end is inserted into the pipe body 1, the film terminal 2 is installed at the upper end of the inner pipe 32, the puncture pipe 33 is installed at the lower end of the inner pipe 32, the lower end of the puncture pipe 33 is integrally formed with a puncture needle 34, a bearing 35 is installed between the inner pipe 32 and the rotating pipe 31, the rotating pipe 31 is threadedly connected with the pipe body 1, a guide cap 121 is embedded at the upper end of the pipe body 1, the inner pipe 32 penetrates through the guide cap 121, a sliding groove 122 is arranged at the inner wall of the guide cap 121, and a sliding strip 322 matched with the sliding groove 122 is arranged at the outer wall of the inner pipe 32; a sealing ring 36 is clamped on the outer wall of the puncture pipe 33, a seal is formed between the sealing ring 36 and the inner wall of the inner pipe 32, and the puncture needle 34 is matched with the blood return device 4.

[0039] In the above technical solution, the sealing ring 36 forms a seal, so that the upper and lower movements of the puncture pipe 33 always form a seal with the inner wall of the pipe body 1.

[0040] Under normal conditions, the puncture needle is located at the top of the blood return device 4, and the blood drawn from the puncture needle flows out through the first connecting tube into the blood filter.

[0041] When the puncture needle 34 penetrates the blood return device downwards, the sealing ring 36 seals the first connecting tube 5.

[0042] This technical solution can increase sealing performance.

[0043] See Figure 3 and Figure 5 As shown, the blood return device 4 includes a blood return vessel 41, which is threadedly connected to the tube body 1. A cannula 42 is provided at the upper end of the blood return vessel 41, and the cannula 42 is attached to the inner wall of the tube body 1. A rubber membrane 43 is fixed near the top of the inner wall of the cannula 42. A sealing ring 44 is provided between the blood return vessel 41 and the tube body 1. A second connecting tube 45 for connecting a blood filter is provided on the outer wall of the blood return vessel 41. A membrane terminal 2 is installed at the second connecting tube 45. A third connecting tube 46 is provided at the bottom of the blood return vessel 41, and the membrane terminal 2 is installed at the third connecting tube 46. The puncture needle 34 penetrates the rubber membrane 43 after descending.

[0044] In the above technical solution, when the rubber membrane 43 is pierced by the puncture needle 34, the blood drawn from the artery will flow directly to the vein.

[0045] See Figure 3 As shown, the outer wall of the rotating tube 31 is injection molded with anti-slip texture 333.

[0046] Texture 333 can increase slip resistance.

[0047] Both the tube body 1 and the insertion tube 42 are transparent PVC tubes.

[0048] Using a transparent tube allows you to determine the direction of blood flow and observe whether the puncture needle has moved into place.

[0049] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0051] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0052] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0053] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0054] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hemofiltration filter occlusion transition device, characterized by: The device comprises a tube body and film terminals, the upper and lower ends of the tube body are through, a puncture device is arranged at the upper part of the tube body, a backflow device is installed at the lower part of the tube body, a first connecting pipe connected with a blood filter is arranged on the side of the tube body, a plurality of film terminals are arranged, the film terminals are installed at the pipe opening of the first connecting pipe and the upper end of the puncture device, and the backflow device is matched with two film terminals.

2. The hemofiltration filter congestion transition device of claim 1, wherein: The puncture device comprises a rotating pipe, an inner pipe and a puncture pipe, the inner pipe is installed at the axis of the rotating pipe and is inserted into the tube body at the lower end, the film terminal is installed at the upper end of the inner pipe, the puncture pipe is installed at the lower end of the inner pipe, a puncture needle is integrally formed at the lower end of the puncture pipe by injection molding, a bearing is installed between the inner pipe and the rotating pipe, the rotating pipe is threadedly connected with the tube body, a guide cap is embedded at the upper end of the tube body, the inner pipe passes through the guide cap, a sliding groove is arranged at the inner wall of the guide cap, and a sliding strip matched with the sliding groove is arranged at the outer wall of the inner pipe; a sealing ring is clamped at the outer wall of the puncture pipe, a seal is formed between the sealing ring and the inner wall of the inner pipe, and the puncture needle is matched with the backflow device.

3. The hemofiltration filter occlusion transition device of claim 2, wherein: When the puncture needle penetrates the backflow device downward, the sealing ring is blocked at the first connecting pipe.

4. The hemofiltration filter occlusion transition device of claim 3, wherein: The backflow device comprises a backflow pipe, the backflow pipe is threadedly connected with the tube body, a cannula is arranged at the upper end of the backflow pipe, the cannula is attached to the inner wall of the tube body, a rubber film is fixed at the inner wall of the cannula near the top, a sealing ring is arranged between the backflow pipe and the tube body, a second connecting pipe connected with a blood filter is arranged at the outer wall of the backflow pipe, the film terminal is installed at the second connecting pipe, a third connecting pipe is arranged at the bottom of the backflow pipe, and the film terminal is installed at the third connecting pipe; the puncture needle penetrates the rubber film after descending.

5. The hemofiltration filter occlusion transition device of claim 2, wherein: Roughness is formed on the outer wall of the rotating pipe by injection molding.

6. The hemofiltration filter occlusion transition device of claim 4, wherein: The tube body and the cannula are both transparent PVC pipes.

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