Digestive juice filtering and reinfusion device

Abstract

The utility model relates to the technical field of gastrointestinal department medical instruments, in particular to a digestive juice filtering and reinfusion device which comprises a shell, an input pipe and an output pipe, the input pipe and the output pipe are communicated with the interior of the shell, a filter plate and a partition plate are arranged in the shell to divide the interior of the shell into an input cavity, a middle cavity and a reinfusion cavity in sequence, and the input cavity is communicated with the input pipe. The middle cavity is communicated with the output pipe, the middle cavity is externally connected with a negative pressure device, the partition plate is provided with a valve, the valve has an opening state and a closing state, when negative pressure is formed in the middle cavity, the valve maintains the closing state, and when hydraulic pressure in the middle cavity is larger than acting force needed by closing of the valve, the valve is opened so that the middle cavity and the feedback cavity can be communicated. The problems that an existing digestive juice filtering and returning device is relatively complex in structure and relatively troublesome to use are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gastrointestinal medical instruments, in particular to a digestive fluid filtering and reinfusion device. Background Art

[0002] Intestinal fistula is an unavoidable complication after gastrointestinal surgery. Studies have shown that adequate enteral nutrition is crucial during conservative treatment of intestinal fistulas. By collecting and re-infusing digestive fluids, this can reduce digestive fluid loss, promote nutrient absorption, and lower the incidence of enteric infection.

[0003] The prior art is named "A gastric juice automatic measurement and return device", and the Chinese patent application number is CN201810430689.X. When performing digestive fluid return, it adopts the means of centralized collection and return of filtered liquid. The product structure is relatively complex, and it is relatively troublesome for personnel to operate the digestive fluid return. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a digestive fluid filtration and reinfusion device, which solves the problem that the existing digestive fluid reinfusion device has a relatively complex structure and is relatively troublesome to use.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a digestive fluid filtration and reinfusion device, including a shell, an input pipe and an output pipe connected to the inside of the shell, a filter plate and a partition are provided in the shell to divide the interior of the shell into an input chamber, an intermediate chamber and a reinfusion chamber in sequence, the input chamber is connected to the input pipe, the reinfusion chamber is connected to the output pipe, the intermediate chamber is connected to a negative pressure device, a valve is provided on the partition, the valve has an open state and a closed state, when negative pressure is formed in the intermediate chamber, the valve maintains its closed state, when the liquid pressure in the intermediate chamber is greater than the force required to close the valve, the valve opens to make the intermediate chamber and the reinfusion chamber conductive.

[0006] Furthermore, a communication port is provided on the partition, and a valve is provided in the communication port.

[0007] By adopting the above technical solution and setting the communication port, the installation of the valve is facilitated.

[0008] Furthermore, the valve includes a cover plate and an elastic member, and the cover plate is elastically mounted and covered on the communication port through the elastic member.

[0009] By adopting the above technical solution, the elastic member is provided to position the cover plate on the communication port, and when the hydraulic pressure in the middle cavity is large, the elastic member elastically extends, causing the cover plate to move and open the communication port.

[0010] Furthermore, the communication port has an extension tube extending toward the output pipe, the cover plate covers the lower end of the extension tube, and the elastic member is arranged inside the extension tube.

[0011] By adopting the above technical solution, the setting of the extension tube has the advantage of facilitating the hiding of the elastic part, thereby preventing the elastic part from being exposed and damaged by accidental touch. At the same time, the setting of the extension tube can increase the height of the entire middle cavity, thereby increasing the pressure of the liquid on the cover when the filtered digestive fluid accumulates inside the middle cavity, so that the cover can be stably opened after the digestive fluid accumulates.

[0012] Furthermore, the valve includes at least two elastic covers, one end of each of the elastic covers is elastically connected to the inner wall of the communication port, and the other ends of the elastic covers elastically abut against each other to close the communication port.

[0013] By adopting the above technical solution, the connecting port can be blocked and closed by the elastic force of the elastic cover itself, and when digestive fluid accumulates, the free end of the elastic cover can be squeezed hydraulically so that the lower ends of the two elastic covers can be elastically deformed and then opened.

[0014] Furthermore, an elastic reset member is provided between the two elastic covers.

[0015] By adopting the above technical solution and setting the elastic reset member, the elastic maintaining force of the two elastic covers can be further improved, helping the elastic covers to be stably reset after deformation.

[0016] Furthermore, the elastic cover includes rubber material, elastic nylon material or elastic plastic.

[0017] By adopting the above technical solution, the three materials have good elasticity, so that the ends of the elastic cover can stably close the communication port after they are closed against each other.

[0018] Furthermore, the filter plate has a recessed portion extending toward the output pipe.

[0019] By adopting the above technical solution, the setting of the recessed portion helps to increase the contact area between the filter plate and the digestive fluid in the input cavity, thereby improving the filtering effect of the digestive fluid. At the same time, the recessed portion also facilitates the collection of impurities in the digestive fluid in the recessed portion, so as to facilitate the subsequent cleaning of the digestive fluid residue after filtration.

[0020] Furthermore, the vertical cross-section of the filter plate is in any one of a funnel shape, a semicircular shape and a trapezoidal shape.

[0021] Furthermore, the housing includes a main shell and a shell cover, and the shell cover is detachably mounted on the main shell to open or close the input chamber.

[0022] By adopting the above technical solution, the digestive fluid residue in the input cavity can be easily cleaned by opening the shell cover.

[0023] Compared with the prior art, the advantages of the present invention are:

[0024] 1. In the present invention, a negative pressure device is provided in the middle cavity, which can accelerate the speed of the digestive fluid input into the input tube through the filter plate when the negative pressure acts, thereby effectively improving the filtering effect of the digestive fluid, so that the digestive fluid can quickly pass through the filter plate into the middle cavity. At the same time, when the digestive fluid accumulates in the middle cavity and reaches a certain amount, under the action of the digestive fluid pressure, its valve opens, thereby allowing the filtered digestive fluid to enter the reinfusion cavity and be reinfused into the patient's body through the output tube. During the entire digestive fluid filtration and reinfusion process, the negative pressure device can continuously apply negative pressure attraction to the middle cavity and continuously filter the digestive fluid in the input cavity. The automatic filtration and reinfusion of the digestive fluid can be completed without the medical staff having to operate the equipment to start and stop. This greatly simplifies the digestive fluid filtration and reinfusion process, makes it more convenient for personnel to operate, and has a simple product structure and optimizes production costs.

[0025] 2. In the present invention, the valve is designed to open automatically when too much digestive fluid accumulates. In this way, when the product is running, the digestive fluid can be promptly and intermittently returned to the patient's body. Compared with the traditional filtering device that adopts centralized filtration and then concentratedly inputs it into the patient's body, the flow speed and amount of digestive fluid can be better managed. The sealed container can ensure the freshness of the digestive fluid and prevent the odor of the digestive fluid from spreading in the air, thereby improving the safety and comfort of the whole process, and avoiding gastrointestinal discomfort caused to the patient when a large amount of digestive fluid is concentratedly returned. Especially for patients with sensitive intestines, intermittent return of digestive fluid can effectively reduce the patient's discomfort, and the patient is relatively more comfortable during the whole process of digestive fluid filtration and return. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the product structure of the utility model.

[0027] Figure 2 For this utility model Figure 1 Middle structure cross section.

[0028] Figure 3 For this utility model Figure 1 Middle structure cross section.

[0029] Figure 4 This is a schematic diagram of the product structure of the utility model.

[0030] In the picture:

[0031] 100 housing, 110 main housing, 120 housing cover, 121 input pipe, 130 output pipe, 101 input cavity, 102 intermediate cavity, 103 return cavity, 140 negative pressure connecting pipe;

[0032] 200 filter plates;

[0033] 300 partition, 301 extension tube, 310 communication port, 320 cover plate, 330 elastic member, 340 elastic cover, 350 elastic reset member. DETAILED DESCRIPTION

[0034] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0035] Reference Figure 1 and 2 The digestive fluid filtration and return device includes a housing 100, an input pipe 121 and an output pipe 130 connected to the interior of the housing 100, a filter plate 200 and a partition 300 are provided in the housing 100, the filter plate 200 is located at the upper end of the partition 300, and the interior of the housing 100 is divided into an input chamber 101, an intermediate chamber 102 and a return chamber 103 from top to bottom, the input chamber 101 is located at the uppermost end of the interior of the housing 100 and is connected to the input pipe 121, and the output pipe 130 is located at the bottom of the housing 100. The lower end is connected to the reinfusion chamber 103, and the middle chamber 102 (a negative pressure device connecting tube needs to be added here, and a rubber stopper needs to be added to the tube mouth) is externally connected to a negative pressure device. A valve is provided on the partition 300, and the valve has an open state and a closed state. When the middle chamber 102 is attracted by the negative pressure device and a negative pressure is formed inside, the valve is attracted and is in a closed state. The liquid pressure inside the middle chamber 102 is greater than the force acting on the valve in the closed state, and the valve opens to connect the middle chamber 102 and the reinfusion chamber 103.

[0036] In this embodiment, a connecting port 310 is provided on the partition 300, and a valve can be provided at the connecting port 310. As an embodiment of the valve, the valve includes a cover plate 320 for closing the connecting port 310 and an elastic member 330 connecting the cover plate 320 with the shell 100 or the connecting port 310.

[0037] Under normal circumstances, the elastic member 330 applies a force to the cover plate 320 to maintain the cover plate 320 in the position of covering the connecting port 310, that is, the connecting port 310 is in a normally closed state under the action of the cover plate 320. Of course, there can also be a certain gap between the cover plate 320 and the connecting port 310, that is, the connecting port 310 is in a normally open state. When the negative pressure device is activated, the cover plate 320 is attracted, and then drives the cover plate 320 to close the connecting port 310. The above two methods of the cover plate 320 can both achieve the closed state of the cover plate 320 to the connecting port 310 when the negative pressure device is in operation.

[0038] In this embodiment, when the connecting port 310 is in a normally open state, its elastic band can also be a non-elastic material, such as a nylon rope. Under normal circumstances, the length of the nylon rope is slightly greater than the height of the connecting port, so that the cover 320 is located close to the connecting port 310.

[0039] In this embodiment, taking the elasticity of the elastic member 330 as an example, the elastic member 330 may be a spring, an elastic band, a tension spring or other materials with a certain elastic extensibility.

[0040] In order to increase the pressure of the digestive fluid in the middle cavity 102 on the cover plate 320 after accumulation, the connecting port 310 can be extended a certain distance toward the output pipe 130 to form an extension tube 301, and the corresponding cover plate 320 covers the lower end of the extension tube 301. At this time, the elastic member 330 can be provided on the inner wall of the extension tube 301, with its upper end connected to the inner wall of the extension tube 301 and its lower end connected to the cover plate 320. In this way, the vertical height of the digestive fluid in the entire middle cavity 102 can be effectively increased through the extension tube 301, and then the pressure of the digestive fluid on the cover plate 320 is increased by increasing the height, so that after the digestive fluid accumulates inside the middle cavity 102, the digestive fluid can effectively push the cover plate 320, causing it to move and then open the connecting port 310, so that the filtered digestive fluid in the middle cavity 102 can enter the return cavity 103.

[0041] As another embodiment of the flap, refer to Figure 3 The valve includes at least two elastic covers 340, the upper ends of the elastic covers 340 are elastically connected to the inner wall of the communication port 310, and the lower ends of the elastic covers 340 abut each other to close the communication port 310. Specifically, taking two elastic covers 340 as an example, the elastic cover 340 can be a nearly hemispherical or spoon-shaped structure with a convex middle part. Under normal circumstances, the sides of the two elastic covers 340 abut against each other to close the communication port 310. When too much filtered digestive fluid accumulates inside the intermediate cavity 102, under the hydraulic pressure of the digestive fluid, the two elastic covers 340 elastically deform and open relative to each other, thereby opening the communication port 310, so that the digestive fluid can enter the reinfusion cavity 103 through the intermediate cavity 102 and be reinfused into the patient's body through the output tube 130 in the reinfusion cavity 103.

[0042] In this embodiment, the deformation of the elastic cover 340 can rely on its own elastic deformation to open relatively, or the elastic member 330 can be bent around the connection between it and the connecting port 310 to make the two elastic covers 340 open relatively. Preferably, the elastic cover 340 is made of elastic rubber material, and its elastic reset force is relatively good, and the sealing performance when the sides of the two elastic covers 340 are fitted together is also relatively good.

[0043] Furthermore, the two elastic covers 340 can also be non-elastic, and an elastic reset member 350 is set between the two elastic covers 340. The elastic reset member 350 applies opposite tensioning forces to the elastic covers 340, so that the two elastic covers 340 can be quickly and stably reset through the elastic reset member 350 after the liquid pressure in the middle cavity 102 is reduced or cancelled.

[0044] In this embodiment, the elastic return member 350 can be a spring, a tension spring or an elastic band.

[0045] In the above embodiment, two elastic covers 340 are taken as an example. It can be imagined that the number can also be three, four, five or even more. When the number is greater than two, the arrangement is preferably a circular adjacent arrangement to form a conical structure as a whole.

[0046] Based on the above embodiment, the filter plate 200 can be a filter mesh, a filter grid or other structures. It can be made of metal, plastic or silicone material, as long as it can filter the digestive fluid impurities in the input cavity 101. It can also be other materials or other structures.

[0047] Based on the above embodiment, the filter plate 200 has a recessed portion extending downward. The setting of the recessed portion can make the filter plate 200 have an inclined side, which helps to increase the contact area between the filter plate 200 and the digestive fluid in the input cavity 101, thereby improving the filtering effect of the digestive fluid. At the same time, the recessed portion also facilitates the impurities in the digestive fluid to gather in the recessed portion, so as to facilitate the subsequent cleaning of the digestive fluid residue on the filter plate 200.

[0048] In this embodiment, the filter plate 200 may be a partition plate 300 and may be in any of the following shapes: funnel-shaped, semicircular, and trapezoidal.

[0049] Based on the above inspiration, in this embodiment, the partition 300 can also adopt the above structure, that is, the partition 300 also has a downward extending recessed portion, and its connecting port 310 is correspondingly opened at the lowest point of the recessed portion, so as to ensure that the maximum pressure point of the liquid acts on the valve of the connecting port 310.

[0050] In this embodiment, the negative pressure device may be a negative pressure pump.

[0051] Based on the above embodiment, refer to Figure 1 and 2 The side of the middle cavity 102 is connected to a negative pressure connecting pipe 140, and its negative pressure pump can be installed on the negative pressure connecting pipe 140. The negative pressure connecting pipe 140 can be externally connected to a rubber plug or a spring clip and other mechanisms so that when the negative pressure pump is not set, the negative pressure connecting pipe 140 can be sealed with a rubber plug or a spring clip.

[0052] In this embodiment, refer to Figure 4 The shell 100 can be designed as a detachable structure, that is, the shell 100 wraps the main shell 110 and the shell cover 120, and the shell cover 120 is installed on the main shell 110 by screwing. In this way, the filter plate 200 can be cleaned and maintained by opening the shell cover 120.

[0053] The above-mentioned embodiments of the valve only list two. Of course, the valve can also have other structures, as long as it can close the connecting port 310 when the negative pressure device is started, and actively open under the hydraulic pressure of the digestive fluid in the middle cavity 102 to allow the digestive fluid to enter the return cavity 103. The valve can also adopt other structures, which are not listed one by one here.

[0054] In this embodiment, the working principle of this product is described with the first embodiment of the valve: the input tube 121 and the output tube 130 are connected to the human gastrointestinal tube and the drainage tube respectively. During filtration, the negative pressure device is activated, thereby generating negative pressure in the intermediate cavity 102 and the input cavity 101. At this time, the cover plate 320 is pressed against the communication port 310 under the action of negative pressure, so that the communication port 310 is closed. The digestive fluid entering the input cavity 101 quickly passes through the filter plate 200 and enters the intermediate cavity 102 under the action of negative pressure. When the digestive fluid accumulates too much, the liquid pressure acting on the cover plate 320 increases to touch the top. The cover plate 320 creates a gap between the cover plate 320 and the connecting port 310, and the digestive fluid enters the reinfusion cavity 103 through the gap of the connecting port 310, and is reinfused into the human intestine through the reinfusion cavity 103 and the output tube 130. When all the digestive fluid in the middle cavity 102 flows into the reinfusion cavity 103, the negative pressure pump continues to run and will attract the cover plate 320 to block the connecting port 310. This intermittent reciprocating process can achieve continuous filtration of the digestive fluid and intermittent reinfusion of the digestive fluid, which has higher filtration efficiency and can effectively reduce the patient's discomfort by intermittently reinfusing the digestive fluid.

[0055] In this embodiment, when the digestive fluid moves against the top cover 320 to open the connecting port 310, due to the different tensioning degrees of the elastic member 330, it may be necessary to overcome the tension of the elastic band. For example, under normal circumstances, when the elastic band pulls the cover 320 upward to fit the connecting port 310, the digestive fluid pressure in the intermediate cavity 102 needs to overcome the pressure of the elastic member 330 on the cover 320. Preferably, in this embodiment, the elastic force of the elastic member 330 is relatively weak, and under normal circumstances, it is only enough to maintain the cover 320 in the closed position on the connecting port 310.

[0056] Although the preferred embodiments of the present invention have been described in detail above, it should be clearly understood that various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A digestive fluid filtration and recirculation device, comprising a housing, an input pipe and an output pipe communicating with the interior of the housing, characterized in that: A filter plate and a partition are provided in the shell to divide the interior of the shell into an input chamber, an intermediate chamber and a return chamber in sequence. The input chamber is connected to the input pipe, the return chamber is connected to the output pipe, and the intermediate chamber is externally connected to a negative pressure device. A valve is provided on the partition, and the valve has an open state and a closed state. When negative pressure is formed in the intermediate chamber, the valve maintains its closed state. When the liquid pressure in the intermediate chamber is greater than the force required to close the valve, the valve opens to connect the intermediate chamber and the return chamber.

2. A digestive fluid filtration and re-infusion device according to claim 1, characterized in that: A communication port is provided on the partition, and the valve is provided in the communication port.

3. A digestive fluid filtration and re-infusion device according to claim 2, characterized in that: The valve comprises a cover plate and an elastic member, and the cover plate is elastically mounted and covered on the communication port through the elastic member.

4. A digestive fluid filtration and re-infusion device according to claim 3, characterized in that: The communication port has an extension tube extending toward the output pipe, the cover plate covers the lower end of the extension tube, and the elastic member is arranged inside the extension tube.

5. A digestive fluid filtration and re-infusion device according to claim 2, characterized in that The valve comprises at least two elastic covers, one end of each of the elastic covers is elastically connected to the inner wall of the communication port, and the other ends of each of the elastic covers elastically abut against each other to close the communication port.

6. The digestive fluid filtration and reinfusion device according to claim 5, characterized in that: An elastic reset piece is provided between the two elastic covers.

7. The digestive fluid filtration and reinfusion device according to claim 5, characterized in that: The elastic cover comprises rubber material, elastic nylon material or elastic plastic.

8. A digestive fluid filtration and re-infusion device according to any one of claims 1 to 7, characterized in that: The filter plate has a recessed portion extending toward the output pipe.

9. The digestive fluid filtration and reinfusion device according to claim 8, characterized in that: The vertical cross-section of the filter plate is in any one of a funnel shape, a semicircle shape and a trapezoidal shape.

10. The digestive fluid filtration and reinfusion device according to claim 1, characterized in that: The housing includes a main shell and a shell cover, and the shell cover is detachably mounted on the main shell to open or close the input chamber.

Images