In-vitro continuous drainage device

Abstract

The utility model discloses an in-vitro continuous drainage device, which belongs to the technical field of medical instruments and comprises a drainage ball and a drainage bag connected with the bottom of the drainage ball through a connecting pipe, an exhaust valve is arranged on the upper portion of the drainage bag, a diaphragm type one-way valve connected with the tail end of the connecting pipe is arranged inside the drainage bag, and a connector seat is fixed at the top of the drainage ball. A liquid inlet connector is formed on the connector base and connected with a liquid inlet three-way valve through a liquid inlet short pipe, the inlet end of the liquid inlet three-way valve is connected with the drainage pipe, the bypass end of the liquid inlet three-way valve is connected with a drainage branch pipe, and the drainage bag is connected with a liquid inlet branch pipe which is arranged side by side with the connecting pipe. And the drainage branch pipe is connected with the liquid inlet branch pipe through a non-return communicating vessel. According to the utility model, the continuity of the whole drainage process is ensured, and effusion at a wound is free from the risk of exosmosis in the drainage process.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially relates to a kind of extracorporeal continuous drainage device. BACKGROUND

[0002] The existing drainage device is mostly in the mode of using drainage ball as negative pressure source, and connects drainage tube to treat hydrops of drainage site, but due to the limited volume of drainage ball, when dealing with large-scale drainage treatment, drainage bag needs to be connected at the outlet of drainage ball, such as the continuous drainage device disclosed in patent CN219662418U, which comprises drainage ball, drainage bag connected to the bottom of drainage ball through connecting pipe, one-way valve seat arranged inside the drainage ball, exhaust valve arranged at the upper part of drainage bag, drainage tube connected to the outside of one-way valve seat and extending into first valve pipe in the drainage ball, the end of first valve pipe and two layers of diaphragm combined on both sides to form diaphragm type one-way valve, second valve pipe arranged in drainage bag and extending into the inside of drainage bag, and second valve pipe and two layers of diaphragm combined on both sides to form diaphragm type one-way valve. Drainage ball forming negative pressure after being squeezed collects drainage liquid through drainage tube, and when drainage ball collects a certain amount, drainage ball is squeezed again to discharge drainage liquid in drainage ball into drainage bag, so as to establish new drainage negative pressure and continue drainage.

[0003] However, in the process of establishing new drainage negative pressure, due to the existence of diaphragm type one-way valve at first valve pipe, drainage tube is in the state of stopping drainage during this period, and cannot realize true continuous drainage, and the collected hydrops increases the risk of exudation at wound, and even causes infection. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art, and provides an extracorporeal continuous drainage device, which ensures the continuous extracorporeal drainage and reduces the risk of infection.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] An in-vitro continuous drainage device comprises a drainage ball, a drainage bag connected with the bottom of the drainage ball through a connecting tube, an exhaust valve arranged on the upper part of the drainage bag, a diaphragm type one-way valve arranged in the internal part of the drainage bag and connected with the end of the connecting tube, a connector seat body fixed on the top of the drainage ball, a liquid inlet connector formed on the connector seat body, a liquid inlet short tube connected with the liquid inlet connector, a liquid inlet three-way valve connected with the liquid inlet short tube, an inlet end of the liquid inlet three-way valve connected with a drainage tube, a bypass end of the liquid inlet three-way valve connected with a drainage branch tube, a liquid inlet branch tube connected with the connecting tube and arranged side by side on the drainage bag, and a check communication device connected with the liquid inlet branch tube through the drainage branch tube. By adding the liquid inlet three-way valve between the drainage ball and the drainage tube, the bypass of the liquid inlet three-way valve is connected with the liquid inlet branch tube on the drainage bag through the drainage branch tube, forming a double-channel drainage unit independent of the drainage ball. When the drainage ball needs to be squeezed to form a new negative pressure for drainage, the liquid inlet three-way valve is operated to make the drainage tube and the drainage branch tube communicate, and the drainage liquid is drained to the drainage bag through the bypass, thus completing the continuous drainage in a true sense. The check communication device at the end of the drainage branch tube avoids the reverse flow phenomenon in the bypass drainage process, thereby reducing the risk of infection at the wound.

[0007] The end of the liquid inlet connector extends to below the connector seat body to form a first valve seat, and a first duckbill valve is installed on the first valve seat.

[0008] The check communication device comprises a communication device main body with a hollow chamber and a second duckbill valve arranged in the communication device main body. The communication device main body has a first connector for connecting the drainage branch tube and a second connector for connecting the liquid inlet branch tube at both ends thereof. The end of the first connector extends into the communication device main body to form a second valve seat, and the second duckbill valve is installed on the second valve seat.

[0009] The communication device main body is made of transparent or translucent material. The transparent or translucent communication device main body can be used to observe the drainage state and identify whether there is a blockage phenomenon during the bypass drainage process.

[0010] The bypass end axis and the inlet end axis of the liquid inlet three-way valve are arranged at a right angle. The bypass end of the liquid inlet three-way valve is connected with a right-angle connector, and the other end of the right-angle connector is connected with the drainage branch tube. Since the drainage ball and the drainage bag are usually arranged in a straight line when the drainage device is used, the right-angle connector arranged on the bypass end of the liquid inlet three-way valve can avoid the formation of a bent pipe section in the process of connecting the drainage branch tube with the liquid inlet three-way valve and the drainage bag, thereby avoiding the bending and flow interruption of the bypass drainage.

[0011] The exhaust joint is formed on the joint seat body, the exhaust joint is connected with the sterile filter through an exhaust pipe, and a pipe clamp is arranged on the exhaust pipe.

[0012] The flow-stopping clamp is arranged on the drainage tube, the drainage branch pipe and the connecting pipe.

[0013] The exhaust valve comprises a hydrophobic air-permeable film, exhaust holes are arranged on the bag bodies on either side of the upper part of the drainage bag, and the hydrophobic air-permeable film is ultrasonically welded on the bag bodies outside the exhaust holes.

[0014] The utility model has the following beneficial effects:

[0015] The utility model discloses a liquid inlet three-way valve is additionally arranged between the drainage ball and the drainage tube, the bypass of liquid inlet three-way valve is connected with the liquid inlet branch pipe on the drainage bag through the drainage branch pipe, and forms the double -channel drainage unit with the drainage ball independent each other, when needing to extrude the drainage ball, forms new drainage negative pressure, and the operation switches liquid inlet three-way valve, makes the drainage tube with drainage branch pipe intercommunication, and the drainage liquid is drained to the drainage bag from the bypass, and the true sense of the sustained drainage is completed, and the check intercommunicator at the end of the drainage branch pipe avoids the reverse flow phenomenon in the bypass drainage process, and the risk of infection at the wound is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as the limitation to the scope, and for the ordinary skilled person in the art, under the premise of not paying the creative labor, other related drawings can also be obtained according to these drawings.

[0017] Figure 1 It is the structural schematic diagram of the utility model;

[0018] Figure 2 It is the section schematic diagram of the liquid inlet three-way valve and the drainage bag connection in the utility model;

[0019] Figure 3 It is the section schematic diagram of the drainage ball in the utility model;

[0020] Figure 4 It is the section schematic diagram of the check intercommunicator in the utility model;

[0021] Figure 5 It is the section schematic diagram of the liquid inlet three-way valve and the right-angle connector connection in the utility model, wherein,Figure 5 (a) the inlet end and the outlet end of the liquid inlet tee valve are communicated, Figure 5 (b) the inlet end and the bypass end of the liquid inlet tee valve are communicated.

[0022] 1, drainage tube; 2, drainage ball; 201, joint seat body; 202, liquid inlet joint; 203, exhaust joint; 204, first duckbill valve; 3, drainage bag; 301, exhaust valve; 302, diaphragm type check valve; 4, connecting pipe; 401, upper connecting part; 402, lower connecting part; 5, liquid inlet short pipe; 6, liquid inlet tee valve; 601, inlet end; 602, outlet end; 603, bypass end; 7, drainage branch pipe; 8, check communication device; 801, communication device main body; 802, second duckbill valve; 803, first joint; 804, second joint; 805, second valve seat; 9, liquid inlet branch pipe; 10, right angle joint; 11, flow stop clamp; 12, exhaust pipe; 13, sterile filter; 14, pipe clamp. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0025] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0026] In the description of the utility model, it is understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0027] As Figure 1 And Figure 2 The utility model provides a kind of in-vitro sustained drainage device, including drainage ball 2, drainage bag 3 being connected with the bottom of drainage ball 2 by connecting pipe 4, drainage bag 3 upper portion is equipped with exhaust valve 301, drainage bag 3 inside is equipped with diaphragm check valve 302 being connected with the end of connecting pipe 4, specifically, above-mentioned exhaust valve 301 includes hydrophobic air-permeable membrane, drainage bag 3 upper portion any side bag body is equipped with exhaust hole, hydrophobic air-permeable membrane is ultrasonically welded on the bag body outside exhaust hole, to make drainage bag 3 have good exhaust performance and not leak liquid.Just as prior art, this is not described repeatedly;The joint seat body 201 is fixed on the top of the drainage ball 2, the liquid inlet joint 202 is formed on the joint seat body 201, the liquid inlet joint 202 is connected with the liquid inlet three-way valve 6 by the liquid inlet short pipe 5, the inlet end 601 of the liquid inlet three-way valve 6 is connected with the drainage tube 1, the bypass end 603 of the liquid inlet three-way valve 6 is connected with the drainage branch pipe 7, the drainage bag 3 is connected with the liquid inlet branch pipe 9 being arranged side by side with the connecting pipe 4, the drainage branch pipe 7 is connected with the liquid inlet branch pipe 9 by the check communication device 8.As Figure 5 The liquid inlet three-way valve 6 has three-way communication channels in the valve core, by rotating the valve core of the liquid inlet three-way valve 6, it is switched to Figure 5 (a) inlet end 601 and outlet end 602 communication state and Figure 5 (b) inlet end 601 and bypass end 603 communication state, the outlet end 602 of the liquid inlet three-way valve 6 is connected with the drainage bag 3 through the drainage ball 2, the bypass of the liquid inlet three-way valve 6 is connected with the liquid inlet branch pipe 9 on the drainage bag 3 through the drainage branch pipe 7, thereby forming two independent drainage units, in the first drainage operation, the liquid inlet three-way valve 6 is in Figure 5 (a) state, when the drainage ball 2 needs to be squeezed, new drainage negative pressure is formed, the liquid inlet three-way valve 6 is switched to Figure 5 (b) state, drainage fluid is drained to the drainage bag 3 from the bypass, thereby realizing the true sense of sustained drainage, and the check communication device 8 at the end of the drainage branch pipe 7 avoids the reverse flow phenomenon in the bypass drainage process, thereby reducing the risk of infection at the wound.

[0028] In order to avoid the reverse flow of effusion in the drainage ball 2 due to misoperation during the drainage of the drainage ball 2, as shown in the drawings, the end of the liquid inlet connector 202 extends to the lower part of the connector seat 201 to form a first valve seat, and a first duckbill valve 204 is installed on the first valve seat, at this time, the duckbill part of the first duckbill valve 204 faces the inside of the drainage ball 2. Figure 3

[0029] As shown in the drawings, the non-return communication device 8 includes a communication device body 801 with a hollow chamber and a second duckbill valve 802 located in the communication device body 801, the two ends of the communication device body 801 are respectively provided with a first connector 803 for connecting the drainage branch pipe 7 and a second connector 804 for connecting the liquid inlet branch pipe 9, the end of the first connector 803 extends into the communication device body 801 to form a second valve seat 805, and the second duckbill valve 802 is installed on the second valve seat 805, at this time, the duckbill part of the second duckbill valve 802 faces the second connector 804. Figure 4

[0030] Further preferably, in order to observe the drainage state during bypass drainage and identify whether there is a blockage phenomenon, the communication device body 801 is made of transparent or translucent material, specifically, the communication device body 801 can be made of transparent PC material or PVC material.

[0031] Because the drainage ball 2 and the drainage bag 3 are usually in a straight line when the drainage device is in use, there will be a certain angle between the drainage branch pipe 7 located at the bypass end 603 and the drainage ball 2 located at the outlet end 602, which will form a curved pipe section of the drainage branch pipe 7 during use, which is easy to cause flow interruption, in order to avoid the above situation, as shown in the drawings, the bypass end 603 axis of the liquid inlet tee valve 6 is arranged at a right angle with the inlet end 601 axis, and the bypass end 603 of the liquid inlet tee valve 6 is connected with a right angle connector 10, and the other end of the right angle connector 10 is connected with the drainage branch pipe 7. Figure 5

[0032] In order to facilitate the independent disassembly of the drainage ball 2 and the drainage bag 3, the connecting pipe 4 includes separable upper and lower connecting parts 401 and 402 connected by a luer connector, similarly, as shown in the drawings, the second connector 804 of the non-return communication device 8 is provided as a luer inner connector, and a luer outer connector is installed on the liquid inlet branch pipe 9, as shown in the drawings, the liquid inlet tee valve 6, the liquid inlet short pipe 5, the drainage pipe 1, the right angle connector 10, and the right angle connector 10 and the drainage branch pipe 7 are all connected by luer connectors. Figure 4 Figure 5

[0033] ​​​​​In drainage treatment surgery, there is a need for positive pressure drainage, and under continuous negative pressure drainage, there is a risk of damage to the wound site due to excessive negative pressure. To meet these needs, an exhaust connector 203 is formed on the connector seat 201. The exhaust connector 203 is connected to the sterile filter 13 via an exhaust pipe 12, and a pipe clamp 14 is provided on the exhaust pipe 12. The sterile filter 13, the exhaust pipe 12, and the exhaust connector 203 form the exhaust assembly of the drainage ball 2. When the drainage ball 2 does not need to be in a negative pressure state, the pipe clamp 14 is opened, the drainage ball 2 is depressurized and returns to its original state, and the accumulated fluid continues to drain under the action of gravity.

[0034] In a further preferred embodiment, in order to enable independent switching control of each drainage unit, the drainage pipe 1, the drainage branch pipe 7, and the connecting pipe 4 are provided with flow-stopping clamps 11.

[0035] When implementing the above technical solutions, such as Figure 1 As shown, after assembling all components, the drainage tube 1 is placed in the wound at the site to be drained. After being pulled out by the subcutaneous traction needle, its end is connected to the inlet end 601 of the inlet three-way valve 6. The inlet three-way valve 6 is then switched to... Figure 5 In state (a), the drainage ball 2 is squeezed to create negative pressure (at this time, the clamp 14 on the exhaust pipe 12 is in the closed state) to drain the wound. After the drainage ball 2 absorbs a certain amount of liquid, the inlet three-way valve 6 is switched to... Figure 5 In state (b), drainage continues through the drainage branch tube 7. Simultaneously, the drainage ball 2 is squeezed to drain the accumulated fluid into the drainage bag 3. Due to the presence of the air vent valve 301 on the drainage bag 3, the pressure generated during this drainage process will not affect the drainage through the drainage branch tube 7. After the drainage ball 2 forms a new negative pressure, the inlet three-way valve 6 is switched back to its original position. Figure 5 (a) Continue a new round of negative pressure drainage. If the medical staff finds that negative pressure is not needed through monitoring, open the tube clamp 14 on the exhaust pipe 12, and the drainage ball 2 returns to its original state. Under the action of gravity, drainage continues. The entire drainage process ensures the continuity of drainage. There is no risk of extravasation of the fluid at the wound site during the drainage process.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An external continuous drainage device, comprising a drainage ball, a drainage bag connected to the bottom of the drainage ball via a connecting tube, wherein the upper part of the drainage bag is provided with an exhaust valve, and the inside of the drainage bag is provided with a diaphragm-type check valve connected to the end of the connecting tube; a connector seat is fixed to the top of the drainage ball, and a liquid inlet connector is formed on the connector seat, characterized in that, The inlet connector is connected to the inlet three-way valve via an inlet short pipe. The inlet end of the inlet three-way valve is connected to the drainage pipe, and the bypass end of the inlet three-way valve is connected to the drainage branch pipe. The drainage bag is connected to an inlet branch pipe arranged parallel to the connecting pipe. The drainage branch pipe is connected to the inlet branch pipe via a check valve.

2. The external continuous drainage device according to claim 1, characterized in that, The end of the liquid inlet connector extends to the lower part of the connector seat to form a first valve seat, on which a first duckbill valve is installed.

3. An external continuous drainage device according to claim 1 or 2, characterized in that, The check valve includes a main body with a hollow cavity and a second duckbill valve located inside the main body. The main body has a first connector for connecting a drainage branch pipe and a second connector for connecting an inlet branch pipe at both ends. The end of the first connector extends into the main body to form a second valve seat, and the second duckbill valve is installed on the second valve seat.

4. The external continuous drainage device according to claim 3, characterized in that, The main body of the communicating vessel is made of transparent or semi-transparent material.

5. An external continuous drainage device according to claim 1 or 2, characterized in that, The bypass end axis and the inlet end axis of the liquid inlet three-way valve are set at right angles. The bypass end of the liquid inlet three-way valve is connected to a right-angle connector, and the other end of the right-angle connector is connected to the drainage branch pipe.

6. An external continuous drainage device according to claim 1 or 2, characterized in that, The connector body is formed with an exhaust connector, which is connected to a sterile filter via an exhaust pipe, and the exhaust pipe is provided with a pipe clamp.

7. The external continuous drainage device according to claim 1, characterized in that, The drainage pipe, the drainage branch pipe, and the connecting pipe are equipped with flow-stopping clamps.

8. The external continuous drainage device according to claim 1, characterized in that, The vent valve includes a hydrophobic and breathable membrane, and an vent hole is provided on either side of the upper part of the drainage bag. The hydrophobic and breathable membrane is ultrasonically welded to the bag body outside the vent hole.

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