Body fluid extracorporeal filtration return pump

Abstract

The utility model provides a kind of body fluid extracorporeal filtration return pump, the medical equipment technical field, including roller type infusion pump main body, detachable installation is limited shell in the front surface of roller type infusion pump main body, limited shell is located in the front of infusion wheel of roller type infusion pump main body, the left surface of roller type infusion pump main body is fixedly installed with clamping lifting frame, clamping lifting frame inside clamping installation has filter device, the upper surface and the lower surface of filter device are fixedly installed with flexible joint, upper end flexible joint is connected with liquid suction pipe, lower end flexible joint is connected with infusion tube, infusion tube is clamped and installed between limited shell and the infusion wheel of roller type infusion pump main body, the surface of the back of roller type infusion pump main body is fixedly installed with clamping mechanism, the utility model can be filtered with the aid of the medical grade filter element in device beforehand to impurity in infusion, ensure that the liquid pure, safe is delivered to human body, provide high-quality infusion therapy for patient, to ensure treatment effect.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, specifically relating to an external filtration and reinfusion pump for body fluids. Background Technology

[0002] In modern medicine, the delivery of bile or nutrient solutions into the human body is a crucial treatment method. With the continuous development of medical technology, the requirements for the quality and safety of the delivered fluids are becoming increasingly stringent.

[0003] A search revealed a patent in the relevant field with publication number CN217525950U, entitled "Small Medical Infusion Pump." Like traditional fluid delivery methods, this patent often lacks an effective filtration mechanism, potentially allowing impurities in the infusion to enter the body and pose risks to patients. For example, unfiltered bile or nutrient solutions may contain tiny particles, bacteria, and other harmful substances, which could cause infection, block blood vessels, or affect treatment outcomes. To address this issue, extracorporeal fluid filtration pumps have been developed. Utility Model Content

[0004] To address the problem in existing technologies where filtering bile or pleural / abdominal effusion during reinfusion is inconvenient, leading to the reinfusion of harmful substances such as tiny particles and bacteria into the patient's body, potentially causing infection, vascular blockage, or affecting treatment efficacy, this invention provides an extracorporeal fluid filtration reinfusion pump. By incorporating a filtration device, impurities in the infusion fluid can be pre-filtered before reinfusion. Besides removing metabolic wastes such as creatinine and urea nitrogen, it can also filter out some medium-molecular-weight toxins, such as cytokines and inflammatory mediators, ensuring the purity and safety of the fluid delivered to the body. This provides high-quality intravenous therapy for patients, thereby guaranteeing treatment effectiveness. It effectively solves the problem in existing technologies where the inconvenience of filtering bile or pleural / abdominal effusion during reinfusion leads to the reinfusion of harmful substances such as tiny particles and bacteria into the patient's body, potentially causing infection, vascular blockage, or affecting treatment efficacy. The specific technical solution is as follows:

[0005] An external fluid filtration and return pump includes a roller-type infusion pump body. A limiting shell is detachably installed on the front surface of the roller-type infusion pump body. The limiting shell is located in front of the infusion wheel of the roller-type infusion pump body. A clamping and lifting frame is fixedly installed on the left surface of the roller-type infusion pump body. A filter device is clamped and installed inside the clamping and lifting frame. Flexible connectors are fixedly installed on the upper and lower surfaces of the filter device. The upper flexible connector is connected to a suction tube, and the lower flexible connector is connected to an infusion tube. The infusion tube is snapped between the limiting shell and the infusion wheel of the roller-type infusion pump body. A clamping mechanism is fixedly installed on the rear surface of the roller-type infusion pump body.

[0006] In the above technical solution, the filtration device includes a filter cartridge, a cartridge cover, and a medical-grade filter element. The medical-grade filter element is installed inside the filter cartridge, the cartridge cover is screwed onto the top of the filter cartridge, the upper flexible connector is fixedly installed on the upper surface of the cartridge cover, and the lower flexible connector is fixedly installed on the lower surface of the filter cartridge.

[0007] In the above technical solution, the clamping and lifting frame includes an iron side wall fixing plate, which is fixedly installed on the left surface of the roller infusion pump body, and a bottom support ring is fixedly installed at the lower end of the left surface of the side wall fixing plate. A T-shaped slide is opened on the left surface of the side wall fixing plate, and a T-shaped magnet is slidably installed in the T-shaped slide. A top pressure ring is fixedly installed on the left surface of the T-shaped magnet. The filter cartridge and the cartridge cover are clamped and installed between the top pressure ring and the bottom support ring.

[0008] In the above technical solution, retaining rings are fixedly installed on the upper surface of the cylinder cover and the lower surface of the filter cylinder;

[0009] The lower surface of the top pressure ring and the upper surface of the bottom support ring are both provided with fitting grooves, and the retaining ring is snapped into the corresponding fitting groove;

[0010] In the above technical solution, the front surface of the roller infusion pump body has two L-shaped slots, and the left and right surfaces of the limiting shell are fixedly installed with elastic clips. The elastic clips are snapped into the corresponding L-shaped slots, and the rear surface of the limiting shell is provided with a through groove, and the infusion tube is embedded in the groove.

[0011] In the above technical solution, multiple tubing clamps are fixedly installed on the front surface of the main body of the roller infusion pump, and the infusion tubing clamps are connected inside the tubing clamps.

[0012] In the above technical solution, the clamping mechanism includes a hook frame, which is fixedly installed on the rear surface of the roller infusion pump body, and a tightening bolt is threaded through the right surface of the hook frame.

[0013] The advantages of this invention's external filtration and return pump for bodily fluids compared to existing technologies are as follows:

[0014] I. This utility model, by setting up a filtration device, can pre-filter impurities in the infusion fluid with the help of a medical-grade filter element inside the device when bile or pleural and peritoneal effusion is reinfused into the patient's body. In addition to removing metabolic waste such as creatinine and urea nitrogen, it can also filter some medium-molecular toxins, such as cytokines and inflammatory mediators, to ensure that the fluid delivered to the human body is pure and safe, providing patients with high-quality infusion therapy and thus ensuring the therapeutic effect.

[0015] II. This utility model uses a threaded connection to combine the filter cartridge and the cover, and is installed on the right side of the roller-type infusion pump body via a clamping support. This design facilitates disassembly and replacement of the filter cartridge when it becomes clogged, thus simplifying maintenance for medical personnel and ensuring the filter device maintains optimal operating condition. Attached Figure Description

[0016] Figure 1 This is a three-dimensional front view structural diagram of the present invention.

[0017] Figure 2 This is a two-dimensional front view structural diagram of the present invention.

[0018] Figure 3 This is a three-dimensional rear view structural schematic diagram of the present invention.

[0019] Figure 4 This is a schematic diagram of the main structure of the roller-type infusion pump of this utility model.

[0020] Figure 5 This is a cross-sectional structural diagram of the present invention.

[0021] Figure 6 This is a rear view schematic diagram of the limiting shell structure of this utility model.

[0022] Figures 1-6 The components include: 1. Roller-type infusion pump body; 11. L-shaped slot; 12. Tube bundle clamp; 2. Limiting shell; 21. Tube groove; 22. Elastic clamp; 3. Clamping and lifting frame; 31. Side wall fixing plate; 311. T-shaped slide; 32. Bottom support ring; 33. T-shaped magnet block; 34. Top pressure ring; 35. Embedding groove; 4. Filter cartridge; 41. Cylinder cover; 42. Flexible joint; 43. Clamping ring; 44. Medical grade filter element; 5. Suction tube; 6. Infusion tube; 7. Clamping mechanism; 71. Hook frame; 72. Tightening bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In this embodiment, front, back, left, right, top, and bottom are... Figure 1 Describe the reference plane. See [link / reference] Figures 1-6 This utility model provides a technical solution:

[0025] A fluid external filtration and return pump includes a roller-type infusion pump body 1. A limiting shell 2 is detachably installed on the front surface of the roller-type infusion pump body 1. The limiting shell 2 is located in front of the infusion wheel of the roller-type infusion pump body 1. A clamping and lifting frame 3 is fixedly installed on the left surface of the roller-type infusion pump body 1. A filter device is clamped and installed inside the clamping and lifting frame 3. Flexible connectors 42 are fixedly installed on the upper and lower surfaces of the filter device. The upper flexible connector 42 is connected to a suction pipe 5, and the lower flexible connector 42 is connected to an infusion pipe 6. The infusion pipe 6 is snapped between the limiting shell 2 and the infusion wheel of the roller-type infusion pump body 1. A clamping mechanism 7 is fixedly installed on the rear surface of the roller-type infusion pump body 1. The clamping mechanism 7 is used to clamp the entire return pump on the upright at the point of use, so as to facilitate the overall placement of the return pump.

[0026] It should be noted that, as Figure 5 As shown, the filtration device includes a filter cartridge 4, a cartridge cover 41, and a medical-grade filter element 44. The medical-grade filter element 44 is installed inside the filter cartridge 4. The cartridge cover 41 is screwed onto the top of the filter cartridge 4. The upper flexible connector 42 is fixedly installed on the upper surface of the cartridge cover 41, and the lower flexible connector 42 is fixedly installed on the lower surface of the filter cartridge 4.

[0027] During use, the reinfusion pump should first be fixed to the upright at the point of use using the clamping mechanism 7. Then, the infusion tubing 6 is wrapped around the outside of the delivery wheel of the roller-type infusion pump body 1, and the limiting shell 2 ensures a tight fit between the infusion tubing 6 and the delivery wheel to guarantee the normal operation of the infusion process. Next, the infusion tubing 6 is connected to the flexible connector 42 on the filter cartridge 4, and the suction tubing 5 is connected to the flexible connector 42 on the cartridge cover 41. Then, the inlet end of the suction tubing 5 is placed at the desired infusion source. At this time, the roller-type infusion pump body 1 is started, and the delivery wheel is used to pre-draw the fluid to be reinfused (such as bile or pleural / abdominal effusion) into the filter cartridge 4 for filtration. During the filtration process, metabolic wastes such as creatinine and urea nitrogen, as well as medium-molecular toxins such as cytokines and inflammatory mediators, are removed from the fluid, ensuring that the fluid delivered to the body is pure and safe, thereby providing high-quality infusion therapy for patients and ensuring the achievement of therapeutic effects.

[0028] like Figure 5 As shown, the clamping and lifting frame 3 includes an iron side wall fixing plate 31, which is fixedly installed on the left surface of the roller infusion pump body 1. A bottom support ring 32 is fixedly installed at the lower end of the left surface of the side wall fixing plate 31. A T-shaped slide 311 is opened on the left surface of the side wall fixing plate 31. A T-shaped magnet block 33 is slidably installed in the T-shaped slide 311. A top pressure ring 34 is fixedly installed on the left surface of the T-shaped magnet block 33. The filter cartridge 4 and the cartridge cover 41 are clamped and installed between the top pressure ring 34 and the bottom support ring 32.

[0029] When the medical-grade filter element 44 needs to be replaced, applying force to the top pressure ring 34 by hand will cause the T-shaped magnet 33 and the top pressure ring 34 to move upward, thereby separating the cap 41 from the filter cartridge 4 and detaching it from the clamping support 3. After separation, the medical-grade filter element 44 can be replaced by unscrewing the cap 41. During the replacement process, the cap 41 and the filter cartridge 4 must be removed, cleaned, and disinfected before they can be put back into use.

[0030] To ensure the stability of the clamping support frame 3 during the clamping process of the cylinder cover 41 and the filter cylinder 4, such as Figure 5 As shown, retaining rings 43 are fixedly installed on the upper surface of the cover 41 and the lower surface of the filter cartridge 4. The lower surface of the top pressure ring 34 and the upper surface of the bottom support ring 32 are provided with mounting grooves 35. The retaining rings 43 are snapped into the corresponding mounting grooves 35. The cooperation between the retaining rings 43 and the mounting grooves 35 can restrict the movement of the cover 41 and the filter cartridge 4 in the front-back and left-right directions, ensuring that the cover 41 and the filter cartridge 4 can be stably held in the clamping support frame 3 under the action of the top pressure ring 34.

[0031] Specifically, combined Figure 4 and Figure 6 As shown, the front surface of the roller infusion pump body 1 has two L-shaped slots 11, and the left and right surfaces of the limiting shell 2 are fixedly installed with elastic clips 22. The elastic clips 22 are snapped into the corresponding L-shaped slots 11. The rear surface of the limiting shell 2 has a through-hole groove 21, and the infusion tube 6 is embedded in the groove 21.

[0032] When wrapping the infusion tube 6 around the outside of the infusion wheel of the roller infusion pump body 1, first squeeze the elastic clip 22 inward to disengage it from the L-shaped slot 11. Then move the limiting shell 2 forward to separate it from the roller infusion pump body 1. After installing the infusion tube 6, re-attach the elastic clip 22 of the limiting shell 2 to the L-shaped slot 11 on the front surface of the roller infusion pump body 1. The infusion tube 6 is then positioned in the tube groove 21. Under the action of the limiting shell 2, the infusion tube 6 is kept in close contact with the infusion wheel of the roller infusion pump body 1, thereby ensuring the stability of the infusion.

[0033] To prevent the infusion tubing 6 from bending during use and affecting the infusion effect, such as Figure 4 As shown, multiple tube clamps 12 are fixedly installed on the front surface of the roller infusion pump body 1. The infusion tube 6 is clamped in the tube clamp 12. The tube clamp 12 can be used to straighten the infusion tube 6, thereby preventing it from bending during use and affecting the infusion effect.

[0034] Finally, as Figure 3As shown, the clamping mechanism 7 includes a hook frame 71, which is fixedly installed on the rear surface of the roller-type infusion pump body 1. A tightening bolt 72 is threaded through the right surface of the hook frame 71. When the return pump is installed on the upright at the place of use using the clamping mechanism 7, the hook frame 71 is first put on the outside of the upright, and then the tightening bolt 72 is tightened so that it is pressed against the outer surface of the upright, thus clamping it on the outer surface of the upright, which makes it easy to clamp the return pump on the outer surface of the upright.

Claims

1. A body fluid external filtration and return pump, comprising a roller-type infusion pump body (1), characterized in that, A limiting shell (2) is detachably installed on the front surface of the roller infusion pump body (1). The limiting shell (2) is located in front of the infusion wheel of the roller infusion pump body (1). A clamping and lifting frame (3) is fixedly installed on the left surface of the roller infusion pump body (1). A filter device is clamped and installed inside the clamping and lifting frame (3). Flexible connectors (42) are fixedly installed on the upper and lower surfaces of the filter device. The upper flexible connector (42) is connected to a suction tube (5), and the lower flexible connector (42) is connected to an infusion tube (6). The infusion tube (6) is snapped between the limiting shell (2) and the infusion wheel of the roller infusion pump body (1). A clamping mechanism (7) is fixedly installed on the rear surface of the roller infusion pump body (1).

2. The external filtration and return pump for body fluids according to claim 1, characterized in that, The filtration device includes a filter cartridge (4), a cover (41), and a medical-grade filter element (44). The medical-grade filter element (44) is installed inside the filter cartridge (4). The cover (41) is screwed onto the top of the filter cartridge (4). The upper flexible connector (42) is fixedly installed on the upper surface of the cover (41), and the lower flexible connector (42) is fixedly installed on the lower surface of the filter cartridge (4).

3. The external filtration and return pump for body fluids according to claim 2, characterized in that, The clamping and lifting frame (3) includes an iron side wall fixing plate (31), which is fixedly installed on the left surface of the roller infusion pump body (1). A bottom support ring (32) is fixedly installed at the lower end of the left surface of the side wall fixing plate (31). A T-shaped slide (311) is opened on the left surface of the side wall fixing plate (31). A T-shaped magnet block (33) is slidably installed in the T-shaped slide (311). A top pressure ring (34) is fixedly installed on the left surface of the T-shaped magnet block (33). The filter cartridge (4) and the cartridge cover (41) are clamped and installed between the top pressure ring (34) and the bottom support ring (32).

4. A body fluid external filtration and return pump according to claim 3, characterized in that, The upper surface of the cylinder cover (41) and the lower surface of the filter cylinder (4) are both fixedly installed with retaining rings (43); The lower surface of the top pressure ring (34) and the upper surface of the bottom support ring (32) are both provided with mounting grooves (35), and the retaining ring (43) is snapped into the corresponding mounting groove (35).

5. A body fluid external filtration and return pump according to claim 1, characterized in that, The front surface of the roller infusion pump body (1) has two L-shaped slots (11). The left and right surfaces of the limiting shell (2) are fixedly installed with elastic clips (22). The elastic clips (22) are snapped into the corresponding L-shaped slots (11). The rear surface of the limiting shell (2) is provided with a through groove (21). The infusion tube (6) is embedded in the groove (21).

6. A body fluid external filtration and return pump according to claim 1, characterized in that, Multiple tube clamps (12) are fixedly installed on the front surface of the main body (1) of the roller infusion pump, and the infusion tube (6) is clamped in the tube clamps (12).

7. A body fluid external filtration and return pump according to claim 1, characterized in that, The clamping mechanism (7) includes a hook frame (71), which is fixedly installed on the rear surface of the roller infusion pump body (1), and a tightening bolt (72) is threaded through the right surface of the hook frame (71).

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