Multifunctional negative pressure drainage device

Abstract

The multifunctional negative pressure drainage device comprises a negative pressure bottle, a bottle opening of the negative pressure bottle is connected with an outer connecting pipe in a sealed mode, an inner connecting pipe which is in sealed butt joint with the outer connecting pipe at the bottle opening is arranged in the negative pressure bottle, and the bottom end of the inner connecting pipe extends to the inner bottom of the bottle and is connected with a double-layer membrane type one-way valve in a sleeved mode. The bottleneck of the negative pressure bottle is provided with an exhaust hole which laterally penetrates through and is communicated with an inner cavity of the negative pressure bottle and an elastic rubber film which covers the exhaust hole and prevents gas from flowing back, the side edge of the top of the negative pressure bottle is provided with a connector which is connected with a negative pressure source and is in sealed butt joint with an upward extending pipe, and the middle of the extending pipe is provided with a flow stopping clamp; and the negative pressure bottle is a plastic bottle body which has rebound tension and shrinks inwards when being pressed. The bottle body rebounds to form internal negative pressure after the negative pressure bottle is squeezed by one hand and loosened, so that the negative pressure can be quickly formed, and the operation process is very convenient. The inner connecting pipe extends into the accumulated liquid at the bottom of the bottle and can reflect the condition that the drainage contains gas. And when the negative pressure in the bottle exceeds the limit, the bottle body shrinks inwards to warn that the negative pressure exceeds the limit.

Description

Technical Field

[0001] The utility model relates to a medical drainage nursing technology, in particular to a multifunctional negative pressure drainage device. Background Art

[0002] During the medical care of the patient's cavity parts, such as chest care, abdominal drainage, and flow cavity drainage, it is necessary to provide a certain negative pressure and insert a connecting tube into the drainage part to drain the internal fluid. The objects to be drained include exuded blood, juice, concentrated fluid, accumulated phlegm, etc.

[0003] General negative pressure drainage medical devices need to be equipped with special negative pressure supporting equipment when in use, which is inconvenient to use. Negative pressure equipment requires power to operate and has a certain weight. Negative pressure equipment cannot be provided at any time in some occasions such as outdoors.

[0004] Chinese utility model patent 201620163537.4 is a portable oral negative pressure suction bottle, whose bottle body is a flexible rebound structure, which can be squeezed to generate internal negative pressure to drain and suck out internal secretions. When squeezed, the gas is discharged from the exhaust pipe, and then the exhaust port is blocked to maintain the internal negative pressure state for use. Each time it is used, it is necessary to open the exhaust port first, and then squeeze the exhaust to form an internal negative pressure. If it needs to continue to be used, the above exhaust operation should be repeated, which is inconvenient to use. The exhaust port is located on the outside and is easily touched and leaked, and the plug of the exhaust port is also easily damaged and leaked. During the drainage process, it is impossible to tell whether the drained substance contains gas, and it is even more impossible to tell the approximate proportion of the gas. Summary of the invention

[0005] In view of the deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a multifunctional negative pressure drainage device which can form internal negative pressure and reflect the gas-liquid composition of the drainage fluid.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a multifunctional negative pressure drainage device, comprising a negative pressure bottle with an external connecting tube sealedly connected to the bottle mouth, an internal connecting tube is provided in the negative pressure bottle and is sealed and docked with the external connecting tube at the bottle mouth, the bottom end of the internal connecting tube extends to the bottom of the bottle and is sleeved with a double-layer membrane one-way valve, the bottleneck of the negative pressure bottle is provided with an exhaust hole that penetrates laterally and connects to the inner cavity of the negative pressure bottle, and an elastic rubber membrane that covers the exhaust hole to prevent gas backflow, the negative pressure bottle is a plastic bottle body with rebound tension that shrinks inward under pressure; the top of the negative pressure bottle is provided with an interface for connecting to a negative pressure source and is sealed and docked with an upwardly arranged extension tube, and a stop clamp is provided in the middle of the extension tube.

[0007] As an improvement of the technical solution of the multifunctional negative pressure drainage device of the utility model, the negative pressure bottle is a plastic bottle body whose front and rear width is smaller than the left and right width and whose middle part can be flattened.

[0008] As an improvement on the technical solution of the multifunctional negative pressure drainage device of the utility model, the front and rear sides of the negative pressure bottle are arc-shaped bulging surfaces, and concave edges are provided between the left and right sides and the front and rear sides of the negative pressure bottle to form vertical steps.

[0009] As an improvement on the technical solution of the multifunctional negative pressure drainage device of the utility model, the concave edge extends to the bottom of the bottle and gradually disappears and smoothly transitions, and the left and right sides of the top of the negative pressure bottle sink to form shoulders.

[0010] As an improvement on the technical solution of the multifunctional negative pressure drainage device of the utility model, a sealing head is provided in the bottle mouth and is in sealing contact with the inner wall of the bottle neck. The upper side of the sealing head is sealingly connected to the external connecting tube, and the lower side of the sealing head is sealingly connected to the internal connecting tube. The sealing head is arranged above the exhaust hole.

[0011] As an improvement on the technical solution of the multifunctional negative pressure drainage device of the utility model, the bottle mouth is sleeved with a bottle cap, and a through hole is provided in the middle of the bottle cap for the external connecting pipe to pass through; the sealing head is provided with a convex ring that can be pressed on the upper end surface of the bottle mouth, and the bottle cap presses the sealing head so that its convex ring is pressed on the bottle mouth; a ring groove is provided in the middle of the sealing head and a sealing ring is sleeved in the ring groove, and the sealing ring contacts and seals with the inner wall surface of the bottleneck.

[0012] As an improvement of the technical solution of the multifunctional negative pressure drainage device of the utility model, the elastic rubber membrane is annular and is tightly sleeved on the outer side of the bottle mouth to cover the exhaust hole.

[0013] As an improvement on the technical solution of the multifunctional negative pressure drainage device of the utility model, an annular concave step is provided on the periphery of the bottle mouth, the exhaust hole is opened in the annular concave step, and the elastic rubber membrane is sleeved in the annular concave step.

[0014] As an improvement on the technical solution of the multifunctional negative pressure drainage device of the utility model, a hanging belt with one end sleeved on the bottleneck is provided at the bottleneck.

[0015] The beneficial effect of the utility model is that when the negative pressure bottle is squeezed by hand, the double-layer membrane one-way valve arranged at the bottom end of the inner connecting tube is closed under pressure, and the gas inside the negative pressure bottle leaks out from the exhaust hole along the inner side of the elastic rubber membrane. After the hand is released, the rebound tension of the plastic bottle body can form an internal negative pressure inside the bottle body. At this time, the elastic rubber membrane closes the exhaust hole, and the double-layer membrane one-way valve opens and performs drainage and liquid discharge on the drainage part through the inner connecting tube and the outer connecting tube. In the process, negative pressure can be formed by squeezing the negative pressure bottle with one hand, and the negative pressure can be quickly replenished. The operation process is very convenient, and the repeated operation of continuous use is also very simple and convenient. The exhaust hole is hidden in the bottle cap to play a good protective role, and the exhaust is smooth and flexible. The covering and blocking is very quick and effective without leakage. The inner connecting tube extends to the bottom of the bottle, and a certain amount of liquid is usually accumulated at the bottom. When the material sucked out by drainage contains gas, bubbles will be generated in the accumulated liquid, thereby reflecting the gas-liquid composition of the drainage fluid, that is, whether it contains gas and the proportion of gas content. The negative pressure bottle is connected to an external negative pressure source. When the negative pressure inside the bottle exceeds the limit, the bottle body will shrink inwards, which can warn that the negative pressure exceeds the limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a three-dimensional structural schematic diagram of a multifunctional negative pressure drainage device.

[0017] Figure 2 for Figure 1 The three-dimensional structural schematic diagram of the cross-section state of multiple parts such as the drainage bottle and bottle cap in the multifunctional negative pressure drainage device is shown.

[0018] Figure 3 for Figure 1 The three-dimensional structural schematic diagram of the multifunctional negative pressure drainage device connected to an external independent negative pressure source is shown.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the drainage bottle in the multifunctional negative pressure drainage device.

[0020] Figure 5 This is a schematic diagram of the main structure of the sealing head in the multifunctional negative pressure drainage device.

[0021] Figure 6 for Figure 5 Schematic diagram of the lateral structure of the sealing head shown. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0023] Implementation method 1: Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the utility model is a multifunctional negative pressure drainage device, including a negative pressure bottle 11 with a bottle mouth 20 sealed and connected to an external connecting tube 31, the negative pressure bottle 11 is provided with an internal connecting tube 32 which is sealably connected to the external connecting tube 31 at the bottle mouth 20, the bottom end of the internal connecting tube 32 extends to the bottom of the bottle and is sleeved with a double-layer membrane one-way valve 33, the bottleneck 12 of the negative pressure bottle is provided with an exhaust hole 22 which laterally penetrates and connects to the inner cavity of the negative pressure bottle 11, and an elastic rubber membrane 23 which covers the exhaust hole 22 to prevent gas backflow, the negative pressure bottle 11 is a plastic bottle body with rebound tension which shrinks inward under pressure, the top side of the negative pressure bottle 11 is provided with an interface 13 which is connected to an external negative pressure source 68 and is sealably connected to an upwardly arranged extension tube 15, and a stop clamp 16 is provided in the middle of the extension tube. A stopper clamp 16 is provided in the middle of the extension tube 15. When the stopper clamp 16 is closed to cut off the internal passage, when the negative pressure bottle 11 is squeezed by hand, the double-layer membrane check valve 33 provided at the bottom end of the inner connecting tube 32 is closed under pressure, and the gas inside the negative pressure bottle 11 leaks out from the exhaust hole 22 along the inner side of the elastic rubber membrane 23. After the hand is released, the rebound tension of the plastic bottle body causes the inside of the bottle body to form an internal negative pressure. At this time, the elastic rubber membrane 23 closes the exhaust hole 22, and the double-layer membrane check valve 33 opens and performs drainage and liquid discharge on the drainage part through the inner connecting tube 32 and the outer connecting tube 31. In the process, negative pressure can be formed by squeezing the negative pressure bottle 11 with one hand, and negative pressure can be quickly replenished. The operation process is very convenient, and the repeated operation for continuous use is also very simple and convenient. The exhaust hole 22 is hidden in the bottle cap to play a good protective role, and the exhaust is smooth and flexible. The covering and blocking is very quick and effective without air leakage. It can be used as a simple autonomous negative pressure suction device without external negative pressure equipment, which is convenient to use anywhere and can be used without power supply. The internal connecting tube 32 provided in the multifunctional negative pressure drainage device extends to the bottom of the bottle, and a certain amount of liquid is usually accumulated at the bottom. When there is no liquid in the bottle, the middle stopper 16 of the extension tube 15 can be opened to inject liquid into the bottle with a syringe. When the material sucked out by the drainage contains gas, bubbles will be generated in the accumulated liquid, thereby reflecting the gas-liquid composition of the drainage fluid, that is, whether it contains gas and the proportion of gas content. The accumulated liquid at the bottom of the bottle makes the double-layer membrane type one-way valve 33 immersed in the liquid. The one-way valve soaked in water has another advantage, that is, it is not easy to be coagulated by blood and stuck to death, resulting in it being unable to open. Since the drainage fluid is not necessarily continuous, a long interval may cause the blood accumulated inside the one-way membrane that is not soaked in the liquid water to coagulate and make it stick and close. For example, if the drainage is done in the morning, if the drainage is done again in the afternoon without infiltration, the valve membrane may be stuck to death.

[0024] Embodiment 2: The top of the negative pressure bottle 11 is provided with an interface 13 for connecting to a negative pressure source and is sealed and docked with an upwardly arranged extension tube 15. A stopper clamp 16 is provided in the middle of the extension tube 15. The stopper clamp 16 is opened to allow its internal passage to communicate with the negative pressure bottle 11. During chest tube drainage or positive pressure drainage, the liquid can flow into the bottle by its own gravity, and the air in the bottle can be discharged out of the bottle through the extension tube 15. Thus, a continuous gravity drainage process can be achieved, and one product can be applied to multiple different occasions, thereby improving the versatility of the product. When the stopper clamp 16 on the extension tube 15 is clamped to lock the extension tube 15 and cut off the passage inside the extension tube 15, the wide side (usually defined as the front and rear sides) of the negative pressure bottle 11 can be flattened to discharge the gas in the bottle from the exhaust hole 22 at the bottleneck 12, thereby forming an internal negative pressure.

[0025] Embodiment 3: The negative pressure bottle 11 is a plastic bottle body whose front and rear width is smaller than the left and right width and whose middle part can be flattened. On the one hand, the bottle body of the negative pressure bottle 11 can be easily flattened to exhaust gas to form negative pressure. On the other hand, the shape (flat shape) of the non-circular cross-section with different dimensions in all directions, when the flow stop clamp 16 set in the middle of the extension tube 15 is opened when the external negative pressure device is connected, the elastic rubber membrane 23 closes the exhaust hole 22, and the double-layer membrane one-way valve 33 is opened and performs drainage and liquid discharge on the drainage part through the inner connecting tube 32 and the outer connecting tube 31. The extension tube 15 connected airtightly at the top of the negative pressure bottle 11 is provided with a sleeve joint and tightly plugged with a negative pressure air pipe 66. The negative pressure of the external negative pressure source 68 is transmitted to the negative pressure bottle 11 through the airtightly connected negative pressure air pipe 66 to generate negative pressure in the negative pressure bottle 11. The negative pressure air pipe 66 is relatively long and can be removed when not in use, which does not hinder the normal use of other components. The extension tube 15 is retained for use when the negative pressure air pipe needs to be connected, which is convenient for operation and handling. When the negative pressure exceeds the supporting force of the bottle body, the bottle body shrinks inwards, and the degree of the shrinkage can reflect the degree of negative pressure inside the bottle body, and indirectly reflect whether the negative pressure is too high. When the negative pressure inside the bottle exceeds the limit, the bottle body shrinks inwards, which can warn that the negative pressure exceeds the limit, and avoid the drainage negative pressure exceeding the limit and causing damage to the human body. A stopper clamp 16 can also be provided on the external connecting pipe, which can clamp off the internal passage of the external connecting pipe 31 when the negative pressure exceeds the safety range, and avoid causing damage to the human body.

[0026] Furthermore, the front and rear side surfaces of the negative pressure bottle 11 are arc-shaped bulging surfaces, and a concave edge 17 is provided between the left and right side surfaces and the front and rear side surfaces of the negative pressure bottle 11 to form a vertically extending step. The provision of the concave edge 17 can increase the strength of the bottle body structure and play a role of supporting on both sides, so that the flattened bottle body itself has better rebound recovery force, and is easier to maintain a stable negative pressure. It can maintain a good recovery force under repeated squeezing, and can better reflect the change of the internal negative pressure by its surface change state to prevent the negative pressure from exceeding the limit.

[0027] Furthermore, the concave edge 17 extends to the bottom of the bottle and gradually disappears with a smooth transition. The left and right sides of the top of the negative pressure bottle 11 sink to form shoulders 18, which further improves the strength of the bottle body, especially the strength of the bottleneck 12 and the top of the bottle body, so that the structural impact of the bottleneck 12 is reduced during the compression and deformation of the bottle body.

[0028] Among them, Figure 5 , Figure 6 As shown, the bottle mouth 20 is provided with a sealing head 35 in sealing contact with the inner wall of the bottle neck, the upper side of the sealing head is sealed and connected to the outer connecting pipe 31, and the lower side of the sealing head 35 is sealed and connected to the inner connecting pipe 32, so as to form a structure in which the bottle body is separated from the outside and the outer connecting pipe 31 is smoothly connected with the inner connecting pipe 32, and the negative pressure deformation of the bottle body does not affect the smooth flow of the outer connecting pipe 31 and the inner connecting pipe 32. The sealing head 35 is arranged above the exhaust hole 22, so that when the inside of the negative pressure bottle 11 is separated from the outside, an exhaust check valve can be arranged on the bottleneck 12 to smoothly exhaust and generate negative pressure.

[0029] Furthermore, the bottle mouth 20 is sleeved with a bottle cap 52, and a through hole is provided in the middle of the bottle cap 52 for the external connection tube 31 to pass through; the sealing head 35 is provided with a convex ring 36 that can be pressed on the upper end surface of the bottle mouth 20, and the bottle cap 52 presses the sealing head 35 so that the convex ring 36 is pressed on the bottle mouth 20; in this way, the sealing head 35 can be stably fixed in the bottle mouth 20 through the convex ring 36, and a stable and reliable sealing structure is constructed. The sealing head 35 is provided with a ring groove 38 in the middle part, and a sealing ring 58 is sleeved in the ring groove 38, and the sealing ring 58 contacts and seals with the inner wall surface of the bottleneck 12, thereby obtaining a good sealing effect.

[0030] Among them, the elastic rubber membrane 23 is annular and is tightly sleeved on the outer side of the bottleneck 12 to cover the exhaust hole 22, constructing a structure similar to the valve of a bicycle inner tube, which can transport gas in one direction and close in the reverse direction. When exhausting, gas seeps out from the bottom of the elastic rubber membrane 23, and then the elastic rubber membrane 23 is tightly attached to block the exhaust hole 22 to prevent it from reversely intake air, making it easy to operate with one hand, and the internal negative pressure state of the negative pressure bottle 11 can be constructed by squeezing and releasing.

[0031] Furthermore, an annular recess 21 is provided on the periphery of the bottleneck 12, the exhaust hole 22 is opened in the annular recess 21, and the elastic rubber membrane 23 is sleeved in the annular recess 21, so that the elastic rubber membrane 23 has a certain setting space and is not affected by other structures, and prevents the elastic rubber membrane from sliding and shifting axially in the bottleneck 12, thereby improving the matching stability of the elastic rubber membrane 23.

[0032] Furthermore, the bottleneck 12 is provided with a hanging strap 26 with one end sleeved on the bottleneck 12, so as to hang the negative pressure bottle 11 at a suitable height and to enable the accumulated fluid to be discharged smoothly when gravity drainage is performed without negative pressure.

[0033] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A multifunctional negative pressure drainage device, comprising a negative pressure bottle with an external connecting tube sealed at the bottle mouth, characterized in that: The negative pressure bottle is provided with an inner connecting tube which is sealably connected to an outer connecting tube at the bottle mouth, the bottom end of the inner connecting tube extends to the bottom of the bottle and is sleeved with a double-layer membrane one-way valve, the bottleneck of the negative pressure bottle is provided with an exhaust hole which penetrates laterally and is connected to the inner cavity of the negative pressure bottle, and an elastic rubber membrane which covers the exhaust hole to prevent gas backflow, the negative pressure bottle is a plastic bottle body with rebound tension which shrinks inward under pressure; the top side of the negative pressure bottle is provided with an interface for connecting to a negative pressure source and is sealably connected to an upwardly arranged extension tube, and a stop clamp is provided in the middle of the extension tube.

2. The multifunctional negative pressure drainage device according to claim 1, characterized in that: The negative pressure bottle is a plastic bottle body whose front and rear width is smaller than the left and right width and whose middle part can be flattened.

3. The multifunctional negative pressure drainage device according to claim 2, characterized in that: The front and rear side surfaces of the negative pressure bottle are arc-shaped bulging surfaces, and concave edges are arranged between the left and right side surfaces and the front and rear side surfaces of the negative pressure bottle to form vertical steps.

4. The multifunctional negative pressure drainage device according to claim 3, characterized in that: The concave edge extends to the bottom of the bottle and gradually disappears with a smooth transition, and the left and right sides of the top of the negative pressure bottle sink to form shoulders.

5. The multifunctional negative pressure drainage device according to claim 1, characterized in that: A sealing head is provided in the bottle mouth and is in sealing contact with the inner wall of the bottle neck. The upper side of the sealing head is sealingly connected to the external connecting tube, and the lower side of the sealing head is sealingly connected to the internal connecting tube. The sealing head is provided above the exhaust hole.

6. The multifunctional negative pressure drainage device according to claim 5, characterized in that: The bottle mouth is sleeved with a bottle cap, and a through hole is provided in the middle of the bottle cap for the external connecting pipe to pass through; the sealing head is provided with a convex ring that can be pressed on the upper end surface of the bottle mouth, and the bottle cap presses the sealing head so that the convex ring is pressed on the bottle mouth; a ring groove is provided in the middle of the sealing head and a sealing ring is sleeved in the ring groove, and the sealing ring contacts and seals with the inner wall surface of the bottleneck.

7. The multifunctional negative pressure drainage device according to claim 1, characterized in that: The elastic rubber membrane is annular and is tightly sleeved on the outer side of the bottleneck to cover the exhaust hole.

8. The multifunctional negative pressure drainage device according to claim 7, characterized in that: An annular concave step is arranged at the periphery of the bottleneck, the exhaust hole is opened in the annular concave step, and the elastic rubber membrane is sleeved in the annular concave step.

9. The multifunctional negative pressure drainage device according to claim 1, characterized in that: The bottleneck is provided with a hanging belt with one end sleeved on the bottleneck.

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