Negative pressure drainage device
By designing the interceptor assembly, the through holes and sealing rings on the sphere can be used to achieve the flow and flow of liquid accumulation, which solves the problem of the pipe clamps in the existing drainer being damaged due to multiple clamping of the pipe clamps in the existing drainer, and realizes the safe drainage of liquid accumulation and the protection of the drainage tube.
Patent Information
- Application Number
- CN202421695116.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-17
AI Technical Summary
In existing drainers, the drainage tube may easily cause damage to the drainage tube after the pipe clamp is clamped multiple times.
A flow interception assembly is designed, including a tube body, a ball and an operating rod, which can realize the flow of fluid accumulation through the through holes and sealing rings on the ball, avoiding direct clamping of the drainage tube.
The effusion is opened and cut off, avoiding damage to the drainage tube, and is suitable for the drainage of effusion in the body cavity in the medical industry.
Smart Images
Figure CN222998087U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of medical devices, and particularly relates to a negative pressure drainage device. Background Art
[0002] Drainage is a commonly used method in clinical practice after surgery, which is used to drain the gas, accumulated pus, blood and liquid in the body cavity to the outside, so as to reduce the local pressure, reduce the infection factors and promote healing. The commonly used drainage device structure is as Figure 1 shown, including a drainage tube 1 and a drainage bottle 2. One end of the drainage tube 1 is connected to the liquid inlet tube 6 on the drainage bottle 2, and the other end is placed in the patient's body cavity. The inside of the drainage bottle 2 is in a negative pressure state, so as to drain the accumulated liquid in the body cavity into the drainage bottle 2.
[0003] Clinically, it is necessary to regularly test the accumulated liquid discharged by the patient to clarify the cause of the formation of the accumulated liquid, and then adopt a suitable treatment method. In order to facilitate liquid extraction, a liquid outlet tube 3 is provided on the drainage bottle 2, and a convex block 4 is clamped in the liquid outlet tube 3. When the convex block 4 is lifted, the convex block 4 is separated from the liquid outlet tube 3, and at this time, the accumulated liquid can be poured out. However, when taking the liquid, it is necessary to prevent the accumulated liquid in the drainage tube 1 from flowing continuously. The common method is to set a pipe clamp 5 on the drainage tube 1. After the pipe clamp 5 is closed, it can clamp the drainage tube 1 tightly, and the accumulated liquid in the body cavity will not flow to the drainage bottle 2, and at the same time, the accumulated liquid in the drainage bottle 2 will not flow back. However, the pipe clamp 5 is made of relatively hard plastic material, and the drainage tube 1 is a flexible tube. After being clamped multiple times, the drainage tube 1 is prone to creases or even breakage. Content of the Utility Model
[0004] The utility model aims to provide a negative pressure drainage device to solve the problems such as the drainage tube being damaged after the pipe clamp clamps the drainage tube multiple times in the prior art.
[0005] To achieve the above object, the technical solution adopted by the utility model is as follows:
[0006] A negative pressure drainage device includes a drainage bottle and a drainage tube connected to the liquid inlet tube of the drainage bottle. A cap is hermetically and detachably arranged on the liquid outlet tube of the drainage bottle. A cut-off assembly is arranged on the drainage tube. The cut-off assembly includes a tube body, the tube body is hermetically sleeved with the drainage tube, and the axial direction of the tube body is arranged along the direction of the accumulated liquid flow; a sphere is rotatably arranged in the tube body in a sealed manner, the size of the sphere is adapted to the size of the tube body, and a through hole for allowing the accumulated liquid to pass through is arranged on the sphere and extends along the axial direction of the tube body; an operating rod is rotatably arranged in the tube body in a sealed manner, the operating rod penetrates through the side wall of the tube body, one end of the operating rod is fixedly connected to the sphere, and the other end extends out of the tube body.
[0007] As a limitation of the utility model: a clamping groove is arranged on the inner wall of the tube body along its circumferential direction, a sealing ring is embedded in the clamping groove, the sealing ring is in sealed contact with the outer surface of the sphere, and the size of the sealing ring is larger than the size of the through hole.
[0008] As a further limitation of the present utility model: the number of the card slots is set to two, and one is arranged at each position on the inner wall of the pipe body near the two ports of the through hole. A sealing ring is embedded in each card slot, and both sealing rings are in sealed contact with the outer surface of the sphere.
[0009] As a further limitation of the present utility model: the operating rod includes a first straight rod and a second straight rod. The first straight rod penetrates through the side wall of the pipe body and is rotatably connected to the pipe body in a sealed manner. One end of the first straight rod is fixedly connected to the sphere, and the other end extends out of the pipe body. The second straight rod is fixedly arranged at the extending end of the first straight rod, and the length direction of the second straight rod is along the axial direction of the pipe body.
[0010] As a further limitation of the present utility model: the pipe body, the sphere and the operating rod are all made of alloy materials.
[0011] As another limitation of the present utility model: the cap includes a cover body sleeved on the liquid outlet pipe of the drainage bottle. The cover body is threadedly connected to the liquid outlet pipe, and a sealing ring is also arranged at the position of the inner top wall of the cover body. The pipe orifice of the liquid outlet pipe abuts against the sealing ring.
[0012] As a further limitation of the present utility model: the cap further includes a rotating handle arranged on the cover body.
[0013] As a further limitation of the present utility model: the rotating handle is in a plate-like structure.
[0014] As a further limitation of the present utility model: a through hole is arranged on the rotating handle along its thickness direction.
[0015] As another limitation of the present utility model: the drainage pipe includes a first branch pipe connected to the liquid inlet pipe of the drainage bottle and a second branch pipe for inserting into the body cavity. The intercepting assembly is arranged between the first branch pipe and the second branch pipe. The first branch pipe is sleeved on one end of the pipe body, and the second branch pipe is sleeved on the other end of the pipe body.
[0016] Due to the adoption of the above technical solution, compared with the prior art, the beneficial effects obtained by the present utility model are as follows:
[0017] The present utility model is an improvement on the existing drainer. The specific improvement lies in using the intercepting assembly to realize the on-off flow of the accumulated liquid in the drainage pipe. The intercepting assembly includes a pipe body, a sphere and an operating rod. The sphere is rotatably arranged in the pipe body in a sealed manner. A through hole is arranged on the sphere to facilitate the passage of the accumulated liquid. A circle of card slots is arranged on the inner wall of the pipe body along its circumferential direction. A sealing ring is embedded in the card slots, and the sealing ring is in sealed contact with the outer surface of the sphere.
[0018] During normal drainage, rotate the operating rod to turn the sphere so that the axial direction of the through hole is parallel to the axial direction of the tube body. At this time, the accumulated liquid flows through the drainage tube, the tube body, and the through hole to the drainage bottle in sequence. Since the sealing ring is in sealing contact with the sphere, the accumulated liquid can only flow into the drainage bottle through the through hole and will not flow between the inner wall of the tube body and the outer surface of the sphere.
[0019] When liquid needs to be taken, rotate the operating rod. When the axial direction of the through hole rotates to be perpendicular to the axial direction of the tube body, the area enclosed by the sealing ring and the sphere is a closed structure, and the accumulated liquid cannot pass through. At this time, the accumulated liquid in the drainage tube is intercepted, and the accumulated liquid in the body cavity cannot flow into the drainage bottle, nor will the accumulated liquid in the drainage bottle flow back into the body cavity.
[0020] The present utility model realizes the on-off flow of the accumulated liquid by operating the intercepting component, rather than directly acting on the drainage tube. Therefore, the drainage tube will not be damaged.
[0021] In summary, the present utility model can not only realize the on-off flow of the accumulated liquid but also will not damage the drainage tube; it is applicable to the medical industry and is used for draining the accumulated liquid in the body cavity after surgery. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.
[0023] Figure 1 is a schematic structural diagram of a drainer in the prior art;
[0024] Figure 2 is a schematic structural diagram of an embodiment of the present utility model;
[0025] Figure 3 is Figure 2 an enlarged schematic diagram of part A in
[0026] Figure 4 is a three-dimensional structural schematic diagram of the cap in the embodiment of the present utility model;
[0027] Figure 5 is a front view structural schematic diagram of the cap in the embodiment of the present utility model;
[0028] Figure 6 is Figure 5 a cross-sectional view taken along line B-B in
[0029] Figure 7 is a front view structural schematic diagram of the intercepting component in the embodiment of the present utility model;
[0030] Figure 8 is Figure 7 a cross-sectional view taken along line C-C in
[0031] Figure 9It is a sectional view of the first sealing ring and the sphere on the vertical plane where the three points a, b, and c are connected in the flow-through state;
[0032] Figure 10 It is a schematic structural diagram of the first branch pipe, the second branch pipe, and the intercepting component in the intercepting state;
[0033] Figure 11 It is a schematic front view structural diagram of the intercepting component in the intercepting state;
[0034] Figure 12 It is a sectional view of the first sealing ring and the sphere on the vertical plane where the two points a and b are connected in the intercepting state.
[0035] In the figure: 1 - drainage pipe, 101 - first branch pipe, 102 - second branch pipe;
[0036] 2 - drainage bottle, 3 - liquid outlet pipe, 4 - convex block, 5 - pipe clamp, 6 - liquid inlet pipe;
[0037] 7 - cap, 71 - cover body, 72 - second sealing ring, 73 - rotating handle, 74 - through hole, 75 - extension piece;
[0038] 8 - intercepting component, 81 - pipe body, 82 - sphere, 83 - through hole, 84 - operating rod, 841 - first straight rod, 842 - second straight rod, 85 - first sealing ring. Specific embodiments
[0039] The preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood that the negative pressure drainage device described herein is a preferred embodiment, which is only used to illustrate and explain the present utility model and does not constitute a limitation to the present utility model.
[0040] The orientation terms or positional relationships such as "left", "right", "front", and "rear" described in the embodiments are based on the Figure 7 orientation relationship in the accompanying drawings of the specification of the present utility model, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the protected content of the present utility model.
[0041] As Figures 2 to 12 shown, this embodiment includes a drainage bottle 2 and a drainage pipe 1 connected to the liquid inlet pipe 6 of the drainage bottle 2. A cap 7 is hermetically and detachably arranged on the liquid outlet pipe 3 of the drainage bottle 2. An intercepting component 8 is arranged on the drainage pipe 1, and the intercepting component 8 is used to realize the on-off of the accumulated liquid in the drainage pipe 1, avoiding damage to the drainage pipe 1 caused by directly clamping the drainage pipe 1 for interception.
[0042] The structures and connection relationships of the above-mentioned drainage tube 1 and drainage bottle 2 are prior arts and will not be elaborated here. The main improvement of this embodiment lies in the intercepting component 8 and the cap 7.
[0043] I. Intercepting component 8;
[0044] The intercepting component 8 includes a tube body 81, a sphere 82, and an operating rod 84;
[0045] As Figure 2 、 7 shown, the axial direction of the tube body 81 is set along the direction of the accumulated liquid flow, so that the accumulated liquid can flow through the inside of the tube body 81. As Figure 8 shown, the sphere 82 is rotatably arranged in the tube body 81 in a sealed manner. Specifically, a sphere groove is provided inside the tube body 81, and the sphere 82 is embedded in the sphere groove, so that the sphere 82 can only rotate and cannot move forward or backward; a clamping groove is also provided on the inner wall of the tube body 81 along its circumferential direction. In other words, a circle of clamping grooves is opened on the inner wall of the tube body 81, and the notch of the clamping groove is close to the axis of the tube body 81. A first sealing ring 85 is embedded in the clamping groove. The first sealing ring 85 is a prior art. The first sealing ring 85 is in sealed contact with the outer surface of the sphere 82 to prevent the accumulated liquid from flowing between the first sealing ring 85 and the outer surface of the sphere 82.
[0046] As Figure 2 、 7 、8 shown, a through hole 83 extending along the axial direction of the tube body 81 is provided on the sphere 82. During drainage, the accumulated liquid flows through the drainage tube 1, the tube body 81, and the through hole 83 in sequence and then enters the drainage bottle 2. In this embodiment, two clamping grooves are opened on the inner wall of the tube body 81, one is provided at each of the front and rear ports close to the through hole 83, and a first sealing ring 85 is embedded in each clamping groove. Both first sealing rings 85 are in sealed contact with the outer surface of the sphere 82, and this structure further ensures the sealing performance when the sphere 82 rotates.
[0047] As Figure 8 shown, the operating rod 84 is rotatably arranged on the tube body 81 in a sealed manner. The operating rod 84 includes a first straight rod 841 and a second straight rod 842. The first straight rod 841 vertically penetrates the side wall of the tube body 81. A sealing ring is provided at the position where the first straight rod 841 penetrates the tube body 81. The first straight rod 841 is sealed and connected to the tube body 81 and can rotate relative to the tube body 81. One end of the first straight rod 841 is fixedly connected to the sphere 82, and the other end extends out of the tube body 81, which is called the extending end of the first straight rod 841. The second straight rod 842 is fixedly arranged at the extending end of the first straight rod 841. During use, the hand rotates the second straight rod 842 to make the sphere 82 rotate to realize the on-off flow. Of course, the operating rod 84 can also be replaced with any structure in the prior art as long as it can drive the sphere 82 to rotate.
[0048] As Figure 2 、 3As shown, the drainage tube 1 in this embodiment includes a first branch tube 101 connected to the liquid inlet tube 6 of the drainage bottle 2, and a second branch tube 102 for inserting into the body cavity. The interception assembly 8 is arranged between the first branch tube 101 and the second branch tube 102. In this embodiment, the first branch tube 101 is sleeved at the rear end of the tube body 81, and the second branch tube 102 is sleeved at the front end of the tube body 81. In this embodiment, the tube body 81, the sphere 82, and the operating rod 84 are all made of alloy materials. The first branch tube 101 and the second branch tube 102 are made of silicone. The inner diameters of the first branch tube 101 and the second branch tube 102 are equal to or slightly smaller than the outer diameter of the tube body 81. By external force, the first branch tube 101 and the second branch tube 102 are tightly sleeved at the ends of the tube body 81 while ensuring sealing.
[0049] The working principle of the interception component 8 is:
[0050] During normal drainage, the structure of the ball 82 is as follows Figure 7 , 8 As shown, the through hole 83 on the sphere 82 is axially parallel to the axial direction of the tube body 81, both in the front and rear directions. At this time, the accumulated fluid flows into the drainage bottle 2 through the drainage tube 1, the tube body 81, and the through hole 83 in sequence. Since the first sealing ring 85 is in sealing contact with the sphere 82, the accumulated fluid can only flow from the through hole 83 to the drainage bottle 2, and will not flow between the first sealing ring 85 and the outer surface of the sphere 82. It should be supplemented that the size of the first sealing ring 85 is larger than the size of the through hole 83, that is, the inner diameter of the first sealing ring 85 is larger than the diameter of the through hole 83, so as to prevent the inner diameter of the first sealing ring 85 from being too small to block the through hole 83 and affect the flow of the accumulated fluid.
[0051] When you need to take liquid, press Figure 3 Rotate the operating rod 84 in the direction of the arrow in the figure to rotate the ball 82 until the axial direction of the through hole 83 is perpendicular to the axial direction of the tube body 81, that is, the axial direction of the through hole 83 is along the left and right directions, see Figure 10 , 11 At this time, the area enclosed by the sealing ring and the sphere 82 is a closed structure, see Figure 12 The accumulated fluid in the drainage tube 1 is intercepted, the accumulated fluid in the body cavity cannot flow to the drainage bottle 2, and the accumulated fluid in the drainage bottle 2 will not flow back into the body cavity.
[0052] For ease of understanding, Figure 8 The vertical plane where the line connecting the three points a, b and c is cut is as follows: Figure 9 As shown, the cross-sectional view of the first sealing ring 85 and the ball 82 when the flow is cut off is as shown in FIG. Figure 12 shown.
[0053] It should be noted that the size of the sphere 82 is adapted to the size of the tube body 81. Adaptation here means that the diameter of the sphere 82 is equal to the inner diameter of the tube body 81, so as to achieve: when the hand applies force, the sphere 82 can rotate inside the tube body 81, and when no force is applied, the sphere 82 can remain in this position to prevent the sphere 82 from being too small and causing the sphere 82 to rotate randomly in the tube body 81, thereby affecting the drainage effect.
[0054] In order to improve this embodiment, the length direction of the second straight rod 842 is along the axial direction of the tube body 81, that is, the axial direction of the second straight rod 842, the axial direction of the through hole 83, and the axial direction of the tube body 81 are parallel. This structure facilitates the naked eye to observe the state of the ball 82 inside the intercepting component 8 from the outside. That is, when the axial direction of the second straight rod 842 is parallel to the axial direction of the tube body 81, it is in the liquid flow state. Figure 7 , 8 When the second straight rod 842 is axially rotated to be perpendicular to the axis of the tube body 81, the liquid is cut off. Figures 10 - 12 .
[0055] 2. Block 7;
[0056] In the prior art, the protrusion is clamped with the liquid outlet tube 3, but the clamping force between the liquid outlet tube 3 and the protrusion is relatively small. In clinical applications, when patients turn over at night or do daily activities, they may accidentally touch the protrusion and cause it to open, causing the accumulated fluid to spill out. Therefore, in this embodiment, a cap 7 is provided on the liquid outlet tube 3 to solve the problem that the liquid outlet tube 3 and the protrusion are easily separated, causing the accumulated fluid to spill out.
[0057] like Figure 2 , 4 As shown, the cap 7 includes a cover body 71 which is sleeved on the liquid outlet pipe 3 of the drainage bottle 2. The cover body 71 is a cylindrical structure, and an internal thread hole is provided at one end thereof facing the liquid outlet pipe 3. Correspondingly, an external thread is provided on the liquid outlet pipe 3, and the cover body 71 is threadedly connected with the liquid outlet pipe 3. When taking liquid, the cover body 71 must be twisted several times to separate the cover body 71 from the liquid outlet pipe 3, and the problem of accidentally touching the cover body 71 and causing it to open will not occur.
[0058] like Figure 5 , 6 As shown, a circle of extension pieces 75 are arranged on the top wall of the cover body 71, and the extension direction of the extension piece 75 is toward the liquid outlet pipe 3, and its cross section is circular. A second sealing ring 72 is clamped between the extension piece 75 and the inner wall of the cover body 71. After the cover body 71 and the liquid outlet pipe 3 are tightened, the outlet pipe 3 is pressed against the second sealing ring 72 to ensure the sealing performance.
[0059] like Figure 4 , 5As shown, in order to facilitate the manual screwing of the cap 7, a rotating handle 73 is fixedly provided on the cap body 71. In this embodiment, the longitudinal section of the rotating handle 73 is an inverted trapezoid; the rotating handle 73 is a plate-like structure, which can prevent the cap body 71 from rolling and getting lost after the cap 7 is unscrewed from the liquid outlet pipe 3. A through hole 74 is provided on the rotating handle 73 along its thickness direction, and after the cap 7 is unscrewed, it can be put on the finger, further reducing the risk of the cap 7 getting lost. It should be noted that in this embodiment, the material of the cap 7 is hard plastic, Figure 6 The diagonal hatching is only for illustration and does not limit the material. Of course, the cap 7 can also be made of alloy material.
[0060] When using this embodiment, rotate the second straight rod 842 to a position where its axis is parallel to the axis of the pipe body 81, that is, forward and backward, see Figure 2 , 7 , and then insert the drainage tube 1 into the body cavity to perform drainage. When taking liquid, first rotate the second straight rod 842 to a position where its axis is perpendicular to the axis of the pipe body 81, that is, left and right, see Figure 10 , 11 . At this time, the liquid in the drainage tube 1 is intercepted, and then unscrew the cap 7 to pour out the liquid.
[0061] It should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A negative pressure drainage device, comprising a drainage bottle and a drainage tube connected to a liquid inlet tube of the drainage bottle, a sealed and detachable cap is provided on the liquid outlet tube of the drainage bottle, and a flow interception assembly is provided on the drainage tube, characterized in that: The intercepting assembly includes a tube body, which is sealed and sleeved with the drainage tube, and the axial direction of the tube body is arranged along the flow direction of the accumulated fluid; a ball is arranged for rotation in the tube body, the size of the ball is adapted to the size of the tube body, and a through hole extending along the axial direction of the tube body for allowing the accumulated fluid to pass through is arranged on the ball; an operating rod is arranged for rotation in the tube body, and the operating rod passes through the side wall of the tube body, one end of the operating rod is fixedly connected to the ball, and the other end extends out of the tube body.
2. A negative pressure drainage device according to claim 1, characterized in that: The inner wall of the tube body is provided with a clamping groove along its circumferential direction, a sealing ring is embedded in the clamping groove, the sealing ring is in sealing contact with the outer surface of the sphere, and the size of the sealing ring is larger than the size of the through hole.
3. A negative pressure drainage device according to claim 2, characterized in that: The number of the card slots is set to two, one of which is arranged on the inner wall of the tube body near the two ports of the through hole. A sealing ring is embedded in each card slot, and the two sealing rings are in sealing contact with the outer surface of the sphere.
4. A negative pressure drainage device according to claim 3, characterized in that: The operating rod includes a first straight rod and a second straight rod. The first straight rod penetrates the side wall of the tube body and is rotatably connected to the tube body in a sealed manner. One end of the first straight rod is fixedly connected to the sphere, and the other end extends out of the tube body. The second straight rod is fixedly arranged at the extended end of the first straight rod, and the length direction of the second straight rod is along the axial direction of the tube body.
5. A negative pressure drainage device according to claim 4, characterized in that: The tube body, ball body and operating rod are all made of alloy materials.
6. A negative pressure drainage device according to any one of claims 1 to 5, characterized in that: The cap comprises a cover body which is sleeved on the liquid outlet tube of the drainage bottle. The cover body is threadedly connected with the liquid outlet tube. A sealing ring is also arranged on the top wall of the cover body, and the outlet tube opening abuts against the sealing ring.
7. A negative pressure drainage device according to claim 6, characterized in that: The cover cap also includes a rotating handle arranged on the cover body.
8. A negative pressure drainage device according to claim 7, characterized in that: The rotating handle is a plate-shaped structure.
9. A negative pressure drainage device according to claim 8, characterized in that: A through hole is arranged on the rotating handle along the thickness direction thereof.
10. A negative pressure drainage device according to any one of claims 1-5 and 7-9, characterized in that: The drainage tube includes a first branch tube connected to the drainage bottle inlet tube and a second branch tube for inserting into the body cavity. The interception component is arranged between the first branch tube and the second branch tube. The first branch tube is sleeved on one end of the tube body, and the second branch tube is sleeved on the other end of the tube body.