Thoracic cavity flow guide tube

Abstract

The utility model belongs to the technical field of medical supplies, and particularly relates to a thoracic cavity flow guide tube which comprises a tube body, a circulation cavity is formed in the tube body, a blocking piece is arranged in the circulation cavity, the blocking piece is in contact with the inner wall of the tube body, the blocking piece is provided with a via hole, the diameter of the via hole is smaller than that of the circulation cavity, and the diameter of the through hole is larger than that of the circulation cavity. The blocking piece is of a soft structure. According to the thoracic cavity drainage device, the tube body is used for draining liquid in the thoracic cavity of a patient, the thoracic liquid circulates out of the patient through the circulation cavity and circulates in the through hole in the circulation cavity, the flow speed and the flow direction of the thoracic liquid cannot be affected due to the fact that the blocking piece is of a soft structure, and when the thoracic liquid crosses the blocking piece and wants to flow back, the blocking piece is not prone to falling off. The blocking piece is extruded by the chest fluid, so that the blocking piece collapses inwards to block the via hole, the chest fluid is prevented from flowing back to the body of the patient, and the safety during drainage is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical supplies, and in particular relates to a chest drainage tube. Background Art

[0002] A chest catheter is a medical device used to drain fluid, gas or blood from the chest cavity.

[0003] A chest catheter can drain the fluid in the chest cavity to relieve the patient's symptoms such as dyspnea and chest pain, and prevent further increase of pleural effusion. In addition, the fluid drained through the chest catheter can be tested in the laboratory, which helps doctors diagnose the cause of pleural effusion and provide a basis for subsequent treatment.

[0004] However, in the existing chest drainage tube, when the fluid in the patient's chest cavity is drained out, the chest drainage tube does not have a backflow prevention function, and the chest fluid in the chest drainage tube may flow back into the patient's body, causing a hidden danger of secondary injury to the patient. Utility Model Content

[0005] The purpose of the utility model is to design a new chest drainage tube based on the inventor's own clinical practice and actual clinical use, aiming at the defects of the prior art, so as to solve the problem that the existing chest drainage tube has no anti-reflux function when draining the pleural fluid in the patient's body, which will cause the pleural fluid to flow back into the patient's body rapidly.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A chest drainage tube comprises a tube body, wherein the tube body has a flow cavity, a blocking member is arranged in the flow cavity, the blocking member contacts the inner wall of the tube body, the blocking member has a through hole, and the diameter of the through hole is smaller than the diameter of the flow cavity;

[0008] A switch portion is also provided on one side of the blocking member, and the switch portion includes a switch sheet and a switch handle. The switch handle is rotatably connected to the tube body, and a connecting rod is provided at the end of the switch handle. The connecting rod is horizontally placed in the flow cavity, and the switch sheet is horizontally arranged on the connecting rod, and the connecting rod is horizontally arranged in the middle of the switch sheet.

[0009] Furthermore, the tube body comprises an inlet and an outlet, the inlet and the outlet are respectively disposed at two ends of the tube body, and the distance from the blocking member to the inlet is smaller than the distance from the blocking member to the outlet.

[0010] Furthermore, the blocking member is annular, and the via hole is located at the center of the blocking member.

[0011] Furthermore, the thickness of the outer edge of the blocking member is greater than the thickness of the center of the blocking member, the thickness of the blocking member is thicker as it is closer to the tube body, and the thickness of the blocking member is thinner as it is closer to the via hole.

[0012] Furthermore, the diameter of the blocking member is equal to the diameter of the flow cavity.

[0013] Furthermore, the center of the blocking member protrudes beyond the edge of the blocking member, and the center of the blocking member protrudes toward the outlet.

[0014] Furthermore, the center of the blocking piece protrudes from the edge of the blocking piece by 2 mm to 6 mm, and the thickness of the blocking piece close to the inner wall of the tube body and the wall thickness of the tube body are both 0.5 mm to 2 mm.

[0015] Furthermore, the maximum thickness of the blocking member is less than or equal to the wall thickness of the tube body.

[0016] Furthermore, the shape of the switch sheet is consistent with the cross-sectional shape of the flow cavity, and the surface area of ​​the switch sheet is 0.3-0.5 mm smaller than the cross-sectional area of ​​the flow cavity.

[0017] Furthermore, a sealing member is provided on the edge of the switch sheet.

[0018] The beneficial effect of the utility model lies in that the utility model provides a chest drainage tube, comprising a tube body, wherein the tube body has a flow cavity, a blocking piece is arranged in the flow cavity, the blocking piece is in contact with the inner wall of the tube body, the blocking piece has a through hole, the diameter of the through hole is smaller than the diameter of the flow cavity, a switch part is also arranged on one side of the blocking piece, the switch part comprises a switch sheet and a switch handle, the switch handle is rotatably connected to the tube body, a connecting rod is arranged at the end of the switch handle, the connecting rod is horizontally placed in the flow cavity, the switch sheet is horizontally arranged on the connecting rod, and the connecting rod is horizontally arranged in the middle of the switch sheet. In the present application, the tube body is used to drain the fluid in the patient's chest cavity, the chest fluid flows to the outside of the patient through the flow cavity, and in the flow cavity, the chest fluid flows in the through hole. The blocking piece is a soft structure and will not affect the flow rate and direction of the pleural fluid. When the pleural fluid wants to flow back over the blocking piece, the pleural fluid squeezes the blocking piece, causing the blocking piece to collapse inward and block the through hole, thereby preventing the pleural fluid from flowing back into the patient's body, thereby improving the safety during drainage. The switch part can block the pleural fluid from flowing out of the tube body, and the connecting rod and the switch piece connected to the connecting rod are driven by rotating the switch part to seal the flow cavity, thereby blocking the pleural fluid from flowing out of the tube body. When the patient needs to undergo other examinations, it is only necessary to close the switch part to prevent the pleural fluid from flowing out of the tube body. Only the tube body needs to be carried, and there is no need to carry a collection box, which greatly improves portability. At the same time, when the pleural fluid in the patient's body needs to be sent for examination, it is only necessary to close the switch part, and then wait for enough pleural fluid to gather in the tube body above the switch part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following will refer to the attached Figure 1 to Figure 3 To describe the features, advantages and technical effects of exemplary embodiments of the present utility model.

[0020] Figure 1 This is a top view of the flow guide pipe in the utility model;

[0021] Figure 2 for Figure 1 Sectional view of AA in the middle;

[0022] Figure 3 for Figure 2 A magnified partial view of B.

[0023] In the figure: 1. tube body;

[0024] 11. Flow cavity; 12. Blocking piece; 13. Through hole; 14. Inlet; 15. Outlet; 16. Switch part; 161. Switch handle; 161. Connecting rod; 163. Switch sheet. DETAILED DESCRIPTION

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0026] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and multiple situations exist alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0029] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0030] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0031] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0032] The following is combined with Figure 1 to Figure 3 The utility model is further described in detail, but it is not intended to limit the utility model.

[0033] The utility model provides a chest drainage tube, including a tube body 1, wherein the tube body 1 has a flow cavity 11, and a blocking member 12 is arranged in the flow cavity 11, the blocking member 12 contacts the inner wall of the tube body 1, and the blocking member 12 has a through hole 13, the diameter of the through hole 13 is smaller than the diameter of the flow cavity 11, and the blocking member 12 is a soft structure. In the present application, the tube body 1 is used to drain the fluid in the patient's chest cavity, and the chest fluid flows to the outside of the patient through the flow cavity 11. In the flow cavity 11, the chest fluid flows in the through hole 13. Since the blocking member 12 is a soft structure, it will not affect the flow rate and flow direction of the chest fluid. When the chest fluid wants to flow back over the blocking member 12, the chest fluid squeezes the blocking member 12, so that the blocking member 12 collapses inward to block the through hole 13, thereby preventing the chest fluid from flowing back into the patient's body, thereby improving the safety during drainage.

[0034] A switch portion 16 is also provided on one side of the blocking member 12. The switch portion 16 includes a switch sheet 163 and a switch handle 161. The switch handle 161 is rotatably connected to the tube body 1. A connecting rod 161 is provided at the end of the switch handle 161. The connecting rod 161 is horizontally placed in the flow cavity 11. The switch sheet 163 is horizontally arranged on the connecting rod 161, and the connecting rod 161 is horizontally arranged in the middle of the switch sheet 163.

[0035] The switch portion 16 can be used to block the pleural fluid from flowing out of the tube body 1. The switch portion 16 is rotated to drive the connecting rod 161 and the switch piece 163 connected to the connecting rod 161, so that the switch piece 163 blocks the flow cavity 11, thereby blocking the pleural fluid from flowing out of the tube body 1. When the patient needs to undergo other examinations, it is only necessary to close the switch portion 16 to prevent the pleural fluid from flowing out of the tube body 1. Only the tube body 1 needs to be carried, and no collection box is needed, which greatly improves portability. At the same time, when the pleural fluid in the patient's body needs to be sent for examination, it is only necessary to close the switch portion 16, and then wait until enough pleural fluid is gathered in the tube body 1 above the switch portion 16.

[0036] As a further embodiment, in the present application, the tube body 1 includes an inlet 14 and an outlet 15 , which are respectively disposed at the farthest ends of the tube body 1 , and the distance from the blocking member 12 to the inlet 14 is smaller than the distance from the blocking member 12 to the outlet 15 .

[0037] Specifically, one end of the tube body 1 is placed in the patient's body, and the pleural fluid in the patient's body enters the tube body 1 at the inlet 14, and then the pleural fluid in the patient's body is drained to the outside through the outlet 15. The blocking member 12 is used to prevent the pleural fluid entering the tube body 1 from flowing back into the patient's body, thereby causing secondary damage to the patient. The blocking member 12 is arranged close to the inlet 14 and can accommodate more pleural fluid between the blocking member 12 and the outlet 15.

[0038] As a further embodiment, in the present application, the blocking member 12 is annular, and the through hole 13 is located at the center of the blocking member 12 .

[0039] Specifically, since the tube body 1 is circular, setting the blocking piece 12 in a ring shape can better match the tube body 1, and the tube body 1 can be separated by the blocking piece 12. The function of the through hole 13 is to allow the pleural fluid to pass through. Setting the through hole 13 in the center of the blocking piece 12 can improve the permeability of the pleural fluid and avoid affecting the fluidity of the pleural fluid.

[0040] As a further embodiment, in the present application, the thickness of the outer edge of the blocking member 12 is greater than the thickness of the center of the blocking member 12 , the thickness of the blocking member 12 is thicker as it is closer to the tube body 1 , and the thickness of the blocking member 12 is thinner as it is closer to the via 13 .

[0041] Specifically, the thickness of the outer edge of the blocking member 12 is greater than the thickness of the center of the blocking member 12. The function is that the outer edge of the blocking member 12 supports the entire blocking member 12, so that the blocking member 12 isolates the flow cavity 11 into two spaces. At the same time, the thicker the connection between the blocking member 12 and the inner wall of the tube body 1, the more firmly the connection between the blocking member 12 and the tube body 1 is, and the blocking member 12 can withstand a larger impact force. The blocking member 12 will not fall off the tube body 1, and the thickness of the portion close to the through hole 13 is thinner, so that the pleural fluid can easily pass through the blocking member 12 when flowing through the blocking member 12. The thinner blocking member 12 is deformed by the force of the pleural fluid flowing through, and then the pleural fluid compresses the blocking member 12 around the through hole 13 toward the inner wall of the tube body 1 when flowing in the through hole 13, thereby expanding the diameter of the through hole 13, so that the pleural fluid can easily pass through the through hole 13.

[0042] As a further embodiment, in the present application, the diameter of the blocking member 12 is equal to the diameter of the flow cavity 11 .

[0043] Specifically, in the present application, if the diameter of the blocking member 12 is smaller than the diameter of the circulation cavity 11, the blocking member 12 cannot completely separate the circulation cavity 11, and there is a gap between the blocking member 12 and the circulation cavity 11, and there is a risk that the pleural fluid will flow back into the patient's body through the gap. When the diameter of the blocking member 12 is larger than the diameter of the circulation cavity 11, the outer surface of the tube body 1 will have a protruding portion. When some equipment needs to be passed through the tube body 1, the protruding portion will cause the equipment to be unable to be installed in place.

[0044] As a further embodiment, the center of the blocking member 12 protrudes beyond the edge of the blocking member 12 , and the center of the blocking member 12 protrudes toward the outlet 15 .

[0045] Specifically, since the outer edge of the blocking piece 12 supports the entire blocking piece 12, and the center of the blocking piece 12 is too thin to support the weight of the blocking piece 12, it will protrude in the direction of the outlet 15, but the protruding direction is carefully designed. The center of the blocking piece 12 protrudes in the direction of the outlet 15. When the pleural fluid at the outlet 15 is about to flow back into the patient's body, the pleural fluid will first pass through the blocking piece 12. At the position of the blocking piece 12, the pleural fluid presses the blocking piece 12, and the central part of the blocking piece 12 protruding in the direction of the outlet 15 is shrunk toward the inlet 14 by the pleural fluid. When the center of the blocking piece 12 shrinks toward the inlet 14, it will also collapse into the through hole 13. Finally, the center of the blocking piece 12 blocks the entire through hole 13, thereby preventing the pleural fluid from flowing back.

[0046] As a further example, in the present application, the center of the blocking member 12 protrudes from the edge of the blocking member 12 by 2 mm to 6 mm.

[0047] Specifically, the center of the blocking member 12 protrudes by 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm and 6 mm. In the present embodiment, the center of the blocking member 12 protrudes by 4 mm. If the protruding portion of the center of the blocking member 12 is smaller, when the pleural fluid refluxes, the center of the blocking member 12 will not be sufficient to completely block the through hole 13, which may cause the hidden danger of reflux. If the center of the blocking member 12 is set too large, its mass will increase, and the pleural fluid will not be sufficient to deform the center of the blocking member 12, making it inconvenient for the pleural fluid to pass through.

[0048] As a further embodiment, in the present application, the maximum thickness of the blocking member 12 is less than or equal to the wall thickness of the tube body 1 .

[0049] Specifically, if the blocking member 12 is thicker than the wall thickness of the tube body 1 , the structural strength of the blocking member 12 will be too strong, and the pleural fluid cannot deform the center of the blocking member 12 , thereby failing to better facilitate the circulation of the pleural fluid.

[0050] As a further embodiment, in the present application, the thickness of the blocking member 12 close to the inner wall of the tube body 1 and the wall thickness of the tube body 1 are both 0.5 mm to 2 mm.

[0051] Specifically, the maximum thickness of the blocking piece 12 and the wall thickness of the tube body 1 are 0.5 mm, 1 mm, 1.5 mm, and 2 mm. The optimal thickness in the present application is 1 mm. Setting the thickness of the tube body 1 and the maximum thickness of the blocking piece 12 to 1 mm can enable the tube body 1 to have a certain leakage resistance, while at the same time enabling the tube body 1 and the blocking piece to have a certain flexibility, so that they can be placed and bent at will without the tube body 1 breaking.

[0052] As a further embodiment, in the present application, at least one blocking member 12 is disposed in the tube body 1 .

[0053] Specifically, in the present application, only one blocking member 12 is provided in the tube body 1 . If one wishes to enhance the anti-backflow effect of the tube body 1 , a plurality of blocking members 12 may be provided in the tube body 1 .

[0054] As a further embodiment, the shape of the switch sheet 163 in the present application is consistent with the cross-sectional shape of the flow cavity 11 , and the surface area of ​​the switch sheet 163 is 0.3-0.5 mm smaller than the cross-sectional area of ​​the flow cavity 11 .

[0055] Specifically, in this embodiment, the circulation cavity 11 is a circular cavity, and the switch piece 163 is also set as a circular piece. Setting the switch piece 163 to the same shape as the circulation cavity 11 can better block the circulation cavity 11, and when the switch part 16 is closed, it can prevent pleural fluid from flowing out of the tube body 1.

[0056] As a further embodiment, in the present application, a sealing member is provided at the edge of the switch sheet 163 .

[0057] Specifically, in the present embodiment, the seal is a rubber structure. Arranging a seal at the edge of the switch piece 163 can prevent the switch piece 163 from making hard contact with the inner wall of the tube body 1, thereby causing damage to the switch piece 163 or the tube body 1 and resulting in a decrease in the sealing ability. The seal can better seal the flow cavity 11. After the tube body 1 leaves the collection box, closing the switch part 16 can prevent the outflow of pleural fluid and facilitate the accumulation of pleural fluid so that the pleural fluid can be sent for inspection.

[0058] The present application can also detect the degree of wound healing after the patient undergoes lung suture surgery. Specifically, after the patient undergoes lung surgery, the inlet 14 of the tube body 1 is left in the patient's chest cavity, and the inlet 14 is not in direct contact with the patient's lungs. At this time, the switch part 16 is turned on to check whether there is any gas leakage at the outlet 15 of the tube body 1. Since the human body is in a sealed state, when the lung wound has not healed completely, the air inhaled by the patient when breathing will enter the chest cavity through the lung wound, and the air in the chest cavity will leak out of the body from the tube body 1. In this case, it is only necessary to observe whether there is any gas leakage at the outlet 15 of the tube body 1 to understand whether the patient's lung wound has healed. Other complicated inspection methods are no longer needed to inspect the patient, which is efficient and simple.

[0059] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0060] According to the disclosure and teaching of the above description, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the above specific implementation, and any obvious improvement, replacement or modification made by the technicians in this field on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A chest drainage tube, characterized in that: It comprises a tube body, wherein the tube body has a flow cavity, a blocking member is arranged in the flow cavity, the blocking member contacts the inner wall of the tube body, the blocking member has a through hole, and the diameter of the through hole is smaller than the diameter of the flow cavity; A switch portion is also provided on one side of the blocking member, and the switch portion includes a switch sheet and a switch handle. The switch handle is rotatably connected to the tube body, and a connecting rod is provided at the end of the switch handle. The connecting rod is horizontally placed in the flow cavity, and the switch sheet is horizontally arranged on the connecting rod, and the connecting rod is horizontally arranged in the middle of the switch sheet.

2. The chest drainage tube according to claim 1, characterized in that: The tube body comprises an inlet and an outlet, wherein the inlet and the outlet are respectively arranged at two ends of the tube body, and the distance from the blocking member to the inlet is smaller than the distance from the blocking member to the outlet.

3. The chest drainage tube according to claim 2, characterized in that: The blocking member is annular, and the via hole is located at the center of the blocking member.

4. The chest drainage tube according to claim 3, characterized in that: The thickness of the outer edge of the blocking member is greater than the thickness of the center of the blocking member. The closer the blocking member is to the tube body, the thicker it is, and the closer the blocking member is to the via hole, the thinner it is.

5. The chest drainage tube according to claim 4, characterized in that: The diameter of the blocking member is equal to the diameter of the flow cavity.

6. The chest drainage tube according to claim 5, characterized in that: The center of the blocking member protrudes beyond the edge of the blocking member, and the center of the blocking member protrudes toward the outlet.

7. The chest drainage tube according to claim 6, characterized in that: The center of the blocking piece protrudes from the edge of the blocking piece by 2 mm to 6 mm, and the thickness of the blocking piece close to the inner wall of the tube body is the same as the wall thickness of the tube body, which is 0.5 mm to 2 mm.

8. The chest drainage tube according to claim 7, characterized in that: The maximum thickness of the blocking member is less than or equal to the wall thickness of the tube body.

9. The chest drainage tube according to claim 8, characterized in that: The shape of the switch sheet is consistent with the cross-sectional shape of the flow cavity, and the surface area of ​​the switch sheet is 0.3-0.5 mm smaller than the cross-sectional area of ​​the flow cavity.

10. The chest drainage tube according to claim 9, characterized in that: A sealing member is arranged at the edge of the switch sheet.

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