Continuous perfusion device

Abstract

The utility model discloses a continuous perfusion device, which relates to the field of perfusion tools, and adopts the technical scheme that the continuous perfusion device comprises a cylinder body, a transition pipe and a liquid inlet pipe, a piston is arranged in the cylinder body, a push rod is fixed on the piston, and the rear end of the push rod extends backwards to the rear part of the cylinder body; the front end of the cylinder body is communicated and butted with the rear end of the transition pipe; a first one-way valve is arranged in the front section of the transition pipe and only allows liquid to flow forwards; the upper end of the liquid inlet pipe is communicated and butted with the rear section of the transition pipe; a second one-way valve is arranged in the liquid inlet pipe and only allows liquid to flow towards one end of the transition pipe. Continuous filling of liquid can be achieved, liquid can be supplemented and filled in each time of pumping, filling continuity can be remarkably improved, and efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to perfusion tool field, especially continuous perfusion device. BACKGROUND

[0002] In many clinical treatment processes, it needs to repeatedly use the syringe to continuously perfuse liquid to the target area. However, the common perfusion tool at present, such as the syringe, shares one liquid inlet and liquid outlet, but the liquid inlet interface and the liquid outlet interface are different, so after the liquid in the perfusion tool is completely perfused to the target object, it needs to be connected with the supplement container for supplementing liquid, and then the next round of perfusion can be carried out. The intermediate perfusion will be interrupted, many hidden dangers are increased, and the specific problems are as follows:

[0003] 1: the patient is fed through the nose by using the stomach tube, and the normal operation process is that the nursing staff pinches the open end of the nasal feeding tube with one hand to avoid air entering the nasal feeding tube. At the same time, the hand is used to help the other hand to use the syringe to suck the nasal feeding content into the syringe, then the syringe is poured, the gas in the syringe is discharged as much as possible, and then the nipple part of the syringe is connected with the open end of the nasal feeding tube. During the connecting process, the hand should not be in contact with the nipple part of the syringe and the inner end of the open end of the nasal feeding tube. If the hand is in contact, the bacteria on the hand may enter the nasal feeding tube, causing gastrointestinal system infection and leading to adverse consequences.

[0004] 2: when drilling and draining the chronic subdural hematoma, a large amount of physiological saline needs to be used for hematoma cavity flushing. If the flushing amount is small, the flushing effect cannot be achieved. During the flushing process, because the maximum capacity of the current medical syringe is generally 50ml, the syringe needs to be repeatedly taken out, physiological saline is taken out from other containers, and then continuous flushing is carried out. The operation method needs to repeatedly disconnect the flushing pipe and the syringe, and after the physiological saline is taken out from other containers, the continuous flushing process also has the possibility that the gas enters the syringe and then enters the intracranial cavity.

[0005] 3: in the soft ureteral nephroscopy, soft choledochoscope and other surgeries, physiological saline needs to be continuously perfused to maintain a clear surgical field. Because the maximum capacity of the current medical syringe is generally 50ml, the syringe also needs to be repeatedly taken out during the flushing process, physiological saline is taken out from other containers, and then continuous flushing is carried out. The operation method will have a small amount of air entering the mirror body every time the syringe is replaced, which will limit the surgical field and also lead to the extension of the operation time, affecting the operation effect. INVENTION CONTENTS

[0006] In order to solve the above technical problems, the utility model provides a continuous perfusion device, which can realize continuous perfusion of liquid, can supplement liquid and perfuse liquid every time, can significantly improve the continuity of perfusion, and can improve the efficiency.

[0007] The utility model discloses a technical scheme that solves its technical problem is: continuous perfusion ware, including cylinder, transition pipe and liquid inlet pipe,

[0008] The piston is fixed with a push rod, and the rear end of the push rod extends to the rear part of the cylinder;

[0009] The front end of the cylinder is communicated with the rear end of the transition pipe.

[0010] The first one-way valve is arranged in the front section of the transition pipe, and the first one-way valve only allows liquid to flow forward.

[0011] The upper end of the liquid inlet pipe is communicated and connected to the rear section of the transition pipe.

[0012] The second one-way valve is arranged in the liquid inlet pipe, and the second one-way valve only allows liquid to flow to one end of the transition pipe.

[0013] When using, first pull the push rod backward, and the piston generates negative pressure in the cylinder, due to the existence of the first one-way valve and the second one-way valve, only the liquid of the liquid inlet pipe can enter the cylinder to realize liquid supplement.

[0014] Then push the push rod forward, and drive the piston to push the liquid in the cylinder outward, and due to the existence of the first one-way valve and the second one-way valve, the liquid can only flow out from the front end of the transition pipe, thereby realizing external perfusion.

[0015] In this way, every time the push rod is pulled and pushed, liquid is pumped into the cylinder, and liquid is pushed out of the transition pipe, thereby realizing the effect of continuous perfusion.

[0016] Preferably, an auxiliary handle ring is arranged outside the cylinder. The cylinder can be gripped better, so that the push rod can be continuously pumped.

[0017] Preferably, a push block is arranged at the rear end of the push rod. A larger contact area can better drive the push rod to move.

[0018] Preferably, a rubber sealing element in contact with the inner wall of the cylinder is arranged at the periphery of the piston. The sealing property can be improved,

[0019] Preferably, a connection pipe is arranged at the front end of the cylinder, an annular connection groove is arranged at the front end of the connection pipe, and the rear end of the transition pipe is inserted into the annular connection groove. The transition pipe can be better fixed, and the sealing property is better.

[0020] Preferably, an external connection pipe is communicated and connected at the front end of the transition pipe, and the front end outer wall of the external connection pipe is arranged in a tapered structure. The external connection pipe can be connected with external pipelines or other objects.

[0021] Preferably, the front end inner wall of the transition pipe is provided with a first connecting cavity, the rear end inner wall of the outer connecting pipe is provided with a first containing section with a larger inner diameter, the first one-way valve is located in the first containing section, the first one-way valve is outwardly provided with a first sealing ring, the first sealing ring is located between the rear end of the outer connecting pipe and the cavity bottom of the first connecting cavity, and the outer wall of the first containing section is matched with the inner wall of the first connecting cavity. It is better in sealing and more firm in connection.

[0022] Preferably, the lower end of the liquid inlet pipe is communicated and docked with a lower connecting pipe, and the lower end outer wall of the lower connecting pipe is provided in a tapered structure. So as to dock with a container storing liquid or other objects.

[0023] Preferably, the lower end inner wall of the liquid inlet pipe is provided with a second connecting cavity, the upper end inner wall of the outer connecting pipe is provided with a second containing section with a larger inner diameter, the second one-way valve is located in the second containing section, the second one-way valve is outwardly provided with a second sealing ring, the second sealing ring is located between the upper end of the lower connecting pipe and the cavity bottom of the second connecting cavity, and the outer wall of the second containing section is matched with the inner wall of the second connecting cavity. It is better in sealing and more firm in connection.

[0024] The utility model discloses the beneficial effect of:

[0025] Through the scheme, the continuous perfusion of liquid can be realized, liquid can be supplemented and perfusion liquid can be supplemented every time pumping, the continuity of perfusion can be improved significantly, and the efficiency is improved. DRAWINGS

[0026] 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 embodiment description will be briefly introduced below, and obviously, the drawings in the following description are only three of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0027] Figure 1 It is the perspective view of the embodiment of the utility model;

[0028] Figure 2 It is the sectional shaft side view of the embodiment of the utility model;

[0029] Figure 3 It is the local sectional shaft side view of the embodiment of the utility model;

[0030] Among them, 1, cylinder;2, piston;3, rubber sealing element;4, auxiliary handle ring;5, push rod;6, push block;7, connecting pipe;8, transition pipe;9, outer connecting pipe;10, first one-way valve;11, liquid inlet pipe;12, lower connecting pipe;13, second one-way valve. DETAILED DESCRIPTION

[0031] In order to deepen the understanding of the utility model, the utility model will be described in further detail below in conjunction with the drawings and examples, which are only used to explain the utility model and do not constitute a limitation on the protection scope of the utility model.

[0032] Embodiment

[0033] As Figure 1 shown, the continuous perfusion device comprises a barrel 1, a transition pipe 8 and a liquid inlet pipe 11; the barrel 1 is internally provided with a piston 2, the piston 2 is fixed with a push rod 5, the rear end of the push rod 5 extends to the rear part of the barrel 1, the front end of the barrel 1 is in communication with the rear end of the transition pipe 8, the front end of the transition pipe 8 is internally provided with a first one-way valve 10, the first one-way valve 10 only allows liquid to flow forward, the upper end of the liquid inlet pipe 11 is in communication with the rear end of the transition pipe 8, the liquid inlet pipe 11 is internally provided with a second one-way valve 13, the second one-way valve 13 only allows liquid to flow to one end of the transition pipe 8.

[0034] When used, first pull the push rod 5 backward, the piston 2 causes negative pressure in the barrel 1, due to the existence of the first one-way valve 10 and the second one-way valve 13, only the liquid in the liquid inlet pipe 11 will enter the barrel 1 to realize liquid supplement; then push the push rod 5 forward, drive the piston 2 to push the liquid in the barrel 1 outward, due to the existence of the first one-way valve 10 and the second one-way valve 13, the liquid can only flow out from the front end of the transition pipe 8, thereby realizing external perfusion.

[0035] With this cycle, each time the push-pull action, liquid will be pumped into the barrel 1, at the same time, liquid is pushed out from the transition pipe 8, thereby realizing the effect of continuous perfusion.

[0036] The barrel 1 is externally provided with an auxiliary handle ring 4. The barrel 1 can be better gripped to continuously pump the push rod 5.

[0037] The rear end of the push rod 5 is provided with a push block 6. A larger contact area can better drive the push rod 5 to move.

[0038] The periphery of the piston 2 is provided with a rubber sealing element 3 in contact with the inner wall of the barrel 1. The sealing property can be improved,

[0039] The front end of the barrel 1 is provided with a connecting pipe 7, the front end of the connecting pipe 7 is provided with an annular connecting groove, the rear end of the transition pipe 8 is inserted into the annular connecting groove. The transition pipe 8 can be better fixed, and the sealing property is better.

[0040] The front end of the transition pipe 8 is in communication with a external pipe 9, the front end outer wall of the external pipe 9 is provided with a tapered structure. In order to be connected with external pipelines or other objects.

[0041] The inner wall of the front end of the transition pipe 8 is provided with a first connecting cavity, the inner wall of the rear end of the outer connecting pipe 9 is provided with a first containing section with a larger inner diameter, the first one-way valve 10 is located in the first containing section, the first one-way valve 10 is provided with a first sealing ring outward, the first sealing ring is located between the rear end of the outer connecting pipe 9 and the bottom of the first connecting cavity, and the outer wall of the first containing section is matched with the inner wall of the first connecting cavity. It is better sealed and connected more firmly.

[0042] The lower end of the liquid inlet pipe 11 is communicated and docked with a lower connecting pipe 12, and the outer wall of the lower end of the lower connecting pipe 12 is provided in a tapered structure. In order to be docked with a container storing liquid or other objects.

[0043] The inner wall of the lower end of the liquid inlet pipe 11 is provided with a second connecting cavity; the inner wall of the upper end of the outer connecting pipe 9 is provided with a second containing section with a larger inner diameter, the second one-way valve 13 is located in the second containing section, the second one-way valve 13 is provided with a second sealing ring outward, the second sealing ring is located between the upper end of the lower connecting pipe 12 and the bottom of the second connecting cavity, and the outer wall of the second containing section is matched with the inner wall of the second connecting cavity. It is better sealed and connected more firmly.

[0044] Through the scheme, continuous perfusion of liquid can be realized, liquid can be supplemented and perfusion liquid can be supplemented every time pumping is carried out, the continuity of perfusion can be significantly improved, and the efficiency is improved.

[0045] The scheme can realize that the inlet and the outlet do not need to be separated from the docked object during perfusion, and the perfusion is continuously carried out, so that the efficiency is higher.

[0046] The technical features of the above embodiments can be combined in any way. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the application.

[0047] The above-described embodiments only express several embodiments of the application, the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which belong to the protection scope of the application. Therefore, the protection scope of the patent of the application should be subject to the appended claims.

Claims

1. Continuous perfusion device, characterized in that, It comprises a cylinder (1), a transition pipe (8) and a liquid inlet pipe (11); A piston (2) is arranged in the cylinder (1), and a push rod (5) is fixed to the piston (2), with the rear end of the push rod (5) extending to the rear of the cylinder (1); The front end of the cylinder (1) is in communication with the rear end of the transition pipe (8); A first one-way valve (10) is arranged in the front section of the transition pipe (8), which only allows liquid to flow forward; The upper end of the liquid inlet pipe (11) is in communication with the rear section of the transition pipe (8); A second one-way valve (13) is arranged in the liquid inlet pipe (11), which only allows liquid to flow to one end of the transition pipe (8); The front end of the transition pipe (8) is in communication with an external pipe (9), and the outer wall of the front end of the external pipe (9) is tapered; The inner wall of the front end of the transition pipe (8) is provided with a first connecting cavity, and the rear end inner wall of the external pipe (9) is provided with a first containing section with a larger inner diameter, and the first one-way valve (10) is located in the first containing section, and the first one-way valve (10) is provided with a first sealing ring outward, and the first sealing ring is located between the rear end of the external pipe (9) and the bottom of the first connecting cavity, and the outer wall of the first containing section cooperates with the inner wall of the first connecting cavity; The lower end of the liquid inlet pipe (11) is in communication with a lower pipe (12), and the lower end of the lower pipe (12) is tapered; The inner wall of the lower end of the liquid inlet pipe (11) is provided with a second connecting cavity, and the upper end inner wall of the external pipe (9) is provided with a second containing section with a larger inner diameter, and the second one-way valve (13) is located in the second containing section, and the second one-way valve (13) is provided with a second sealing ring outward, and the second sealing ring is located between the upper end of the lower pipe (12) and the bottom of the second connecting cavity, and the outer wall of the second containing section cooperates with the inner wall of the second connecting cavity; The front end of the cylinder (1) is provided with a connecting pipe (7), and the front end of the connecting pipe (7) is provided with an annular connecting groove, and the rear end of the transition pipe (8) is inserted into the annular connecting groove.

2. The continuous perfusion according to claim 1, wherein: An auxiliary handle ring (4) is arranged outside the cylinder (1).

3. The continuous perfusion according to claim 1, wherein: The rear end of the push rod (5) is provided with a push block (6).

4. The continuous perfuser of claim 1, wherein: The periphery of the piston (2) is provided with a rubber sealing element (3) in contact with the inner wall of the cylinder (1).

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