Chest drainage tube

Abstract

The chest drainage tube comprises an inner tube, an outer tube, a first sealing ring and a second sealing ring, the outer tube is arranged outside the inner tube in a sleeved mode, the first sealing ring and the second sealing ring are connected to the two ends of the outer tube respectively, and the two ends of the inner tube are connected with the first sealing ring and the second sealing ring respectively. A buffering cavity is formed among the first sealing ring, the second sealing ring, the inner pipe and the outer pipe, an elastic film is arranged in the buffering cavity in the length direction, the two ends of the elastic film are connected with the first sealing ring and the second sealing ring respectively, the elastic film and the outer pipe are enclosed to form a leakage area, and a detection mechanism used for detecting air leakage is connected into the leakage area. Double insurance is formed by arranging the inner tube and the outer tube to reduce the influence of air leakage of the outer tube on drainage of the inner tube, meanwhile, the elastic film is arranged to form a leakage area to avoid the situation that the air leakage of the outer tube permeates into the inner tube, and nursing staff can conveniently find the air leakage in time to conduct further operation by arranging the detection mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially a chest drainage tube. BACKGROUND

[0002] In clinical practice, the use of chest drainage tube is crucial for treating intrathoracic air, effusion and other diseases. For example, the patent document with the application number CN201821206129.8 discloses a chest drainage tube, which includes a main pipe and a fixing assembly. The end of the main pipe inserted into the chest cavity is curved in an arc shape, the one end of the main pipe is provided with a drainage port, and the other end of the main pipe is provided with a liquid outlet. The fixing assembly includes a first air bag and a second air bag, which are arranged on the outer wall of the main pipe in a spaced manner, and the second air bag is located on the side of the first air bag away from the drainage port. The end of the chest drainage tube inserted into the chest cavity is curved in an arc shape, so that the chest drainage tube will not hurt the internal organs of the patient, and the pain of the patient can be reduced. The first air bag and the second air bag clamp the chest wall of the patient, thereby fixing and supporting the entire chest drainage tube. Whether the chest drainage tube is pulled outward or pushed inward, the drainage tube can be prevented from moving, thereby increasing the safety during use.

[0003] However, the current drainage tube has some significant problems. Small damage of the chest tube caused by improper operation or external factors is not easy to detect, and small air leakage caused by loose suture of the chest drainage tube port is also difficult to be found in time. Once such air leakage occurs, the current conventional treatment method is to directly replace the entire chest bottle or the entire set of device. This not only increases the hospitalization time of the patient and increases the economic burden of the patient, but also increases the risk of infection due to the increase of the number of operations. Therefore, it is urgent to develop a chest drainage tube which can effectively prevent pneumothorax caused by air leakage of the drainage tube and be discovered in time when air leakage occurs. SUMMARY

[0004] The utility model aims at least to solve one of the technical problems existing in the prior art. Therefore, the utility model provides a chest drainage tube which can effectively prevent pneumothorax caused by air leakage of the drainage tube and be discovered in time when air leakage occurs.

[0005] The thoracic drainage tube according to the first aspect of the utility model has the advantages that the inner tube and the outer tube are arranged to form double protection, thereby reducing the influence of the air leakage of the outer tube on the drainage of the inner tube; the elastic film is arranged to form a leakage area, thereby avoiding the air leakage of the outer tube from penetrating into the inner tube; and the detection mechanism for detecting the air leakage is arranged in the leakage area, thereby facilitating the nursing staff to discover the air leakage in time and to perform further operation.

[0006] The thoracic drainage tube according to the first aspect of the utility model has the advantages that the inner tube and the outer tube are arranged to form double protection, thereby reducing the influence of the air leakage of the outer tube on the drainage of the inner tube; the elastic film is arranged to form a leakage area, thereby avoiding the air leakage of the outer tube from penetrating into the inner tube; and the detection mechanism for detecting the air leakage is arranged in the leakage area, thereby facilitating the nursing staff to discover the air leakage in time and to perform further operation.

[0007] According to some embodiments of the utility model, the elastic film and the inner tube have a gap therebetween.

[0008] According to some embodiments of the utility model, in the initial state, the leakage area is in a negative pressure state, and the elastic film is attached to the inner wall of the outer tube.

[0009] According to some embodiments of the utility model, the detection mechanism comprises a connecting pipe and a detection pipe, one end of the detection pipe is connected to the outer tube through the connecting pipe and communicates with the leakage area, the detection pipe and the connecting pipe are both in a negative pressure state, and a piston is movably connected in the detection pipe, and the circumferential surface of the piston is in sealing abutment with the inner wall of the detection pipe.

[0010] According to some embodiments of the utility model, the detection pipe is made of transparent hard material.

[0011] According to some embodiments of the utility model, a mark line is arranged on the detection pipe, the length of the mark line is equal to the length of the piston, and in the initial state, the upper and lower planes of the piston are flush with the upper and lower planes of the mark line.

[0012] According to some embodiments of the utility model, a manifold is further connected to the connecting pipe, and a one-way valve is connected to the manifold.

[0013] According to some embodiments of the utility model, one -way valve including valve body, cover, fastener, film elastic piece and compression ring, valve body hollow through, cover sealed fixed connection on one end of valve body, the cover is set with air inlet hole, the cover is sealed with manifold connection, compression ring is located in valve body and connects with cover, film elastic piece is connected between compression ring and cover, film elastic piece has arc gap, fastener is passed into valve body and with compression ring abuts, the center of fastener has through -hole.

[0014] According to some embodiments of the utility model, the arc gap is located outside the air inlet hole edge, the arc gap is within the inner diameter of the compression ring.

[0015] According to some embodiments of the utility model, the inner side wall of the valve body has a groove, and the outer periphery of the fastener is provided with a convex ring correspondingly.

[0016] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further explained below in combination with the drawings and examples, wherein:

[0018] Figure 1 It is cross section structure schematic drawing of thoracic cavity drainage tube of the utility model embodiment.

[0019] Figure 2 It is cross section structure schematic drawing of one -way valve of thoracic cavity drainage tube of the utility model embodiment.

[0020] Figure 3 It is structure schematic drawing of film elastic piece of one -way valve of thoracic cavity drainage tube of the utility model embodiment.

[0021] 110, inner tube, 120, outer tube, 130, first sealing ring, 140, second sealing ring, 150, elastic film, 160, leakage area, 210, connecting pipe, 220, detection pipe, 230, piston, 240, manifold, 300, one -way valve, 310, valve body, 311, groove, 320, cover, 321, air inlet hole, 330, fastener, 331, through -hole, 332, convex ring, 340, film elastic piece, 341, arc gap, 350, compression ring. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0023] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0024] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0025] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0026] Reference Figure 1 As shown in the drawings, according to the chest drainage tube of the embodiment of the present application, the chest drainage tube comprises an inner tube 110 for drainage, an outer tube 120 for protection, a first sealing ring 130 and a second sealing ring 140, the outer tube 120 is sleeved on the outer tube 110, the first sealing ring 130 and the second sealing ring 140 are connected to the two ends of the outer tube 120 respectively, the two ends of the inner tube 110 are connected with the first sealing ring 130 and the second sealing ring 140 respectively, a buffer cavity is formed between the first sealing ring 130, the second sealing ring 140, the inner tube 110 and the outer tube 120, an elastic film 150 is arranged in the buffer cavity along the length direction, the two ends of the elastic film 150 are connected with the first sealing ring 130 and the second sealing ring 140 respectively and are enclosed with the outer tube 120 to form a leakage area 160, and a detection mechanism for detecting air leakage is connected in the leakage area 160.

[0027] In actual use, the inner tube 110 and the outer tube 120 are arranged to form double insurance to reduce the influence of the leakage of the outer tube 120 on the drainage of the inner tube 110, the elastic film 150 is arranged to form the leakage area 160 to avoid the leakage of the outer tube 120 from penetrating into the inner tube 110, and the detection mechanism for detecting the leakage is arranged in the leakage area 160 to facilitate the nursing staff to find the leakage in time and to further operate.

[0028] In some specific embodiments of the utility model, the elastic film 150 and the inner tube 110 have a gap. Through the design, the elastic film 150 can have a certain deformation space, so that the leakage can be limited in the gap, and the leakage is prevented from deforming and pressing the inner tube 110 to cause poor drainage.

[0029] Preferably, the hardness of the inner tube 110 and the hardness of the outer tube 120 are both greater than the hardness of the elastic film 150.

[0030] In some specific embodiments of the utility model, the leakage area 160 is in a negative pressure state in the initial state, and the elastic film 150 is attached to the inner wall of the outer tube 120. Specifically, the initial state is the state without leakage.

[0031] In some specific embodiments of the utility model, the detection mechanism comprises a connecting pipe 210 and a detection pipe 220, one end of the detection pipe 220 is connected with the outer tube 120 through the connecting pipe 210 and communicates with the leakage area 160, the detection pipe 220 and the connecting pipe 210 are both in a negative pressure state, and the detection pipe 220 movably connects a piston 230, and the circumferential surface of the piston 230 is in sealing abutment with the inner wall of the detection pipe 220.

[0032] In some specific embodiments of the utility model, the detection pipe 220 is made of transparent hard material.

[0033] In some specific embodiments of the utility model, a mark line (not shown in the figure) is arranged on the detection pipe 220, the length of the mark line is equal to the length of the piston 230, and the upper and lower planes of the piston 230 are flush with the upper and lower planes of the mark line in the initial state.

[0034] Specifically, the piston 230 divides the detection pipe 220 into two negative pressure cavities, one of which communicates with the connecting pipe 210 and the leakage area 160, and the other of which does not communicate with the connecting pipe 210 and the leakage area 160.

[0035] Through the above design, when the outer tube 120 leaks, the external airflow entering the leakage area 160 will cause the pressure of the leakage area 160 to increase, thereby causing the pressure of the negative pressure cavity communicated with the connecting pipe 210 and the leakage area 160 to increase and pushing the piston 230 to move, thereby being dislocated from the identification line, facilitating nurses and doctors to identify the leakage in time.

[0036] Reference Figure 1 As shown in some specific embodiments of the utility model, it can also have the following additional technical features: the connecting pipe 210 is also connected with a manifold 240, and the manifold 240 is connected with a one-way valve 300.

[0037] Reference Figure 2 And Figure 3 As shown in some specific embodiments of the utility model, it can also have the following additional technical features: the one-way valve 300 comprises a valve body 310, a cover 320, a fastener 330, a thin film spring piece 340 and a compression ring 350, the valve body 310 is hollow through, the cover 320 is sealingly and fixedly connected to one end of the valve body 310, the cover 320 is provided with an air inlet hole 321, the cover 320 is sealingly connected with the manifold 240, the compression ring 350 is arranged in the valve body 310 and connected with the cover 320, the thin film spring piece 340 is connected between the compression ring 350 and the cover 320, the thin film spring piece 340 is provided with a circular arc gap 341, the fastener 330 penetrates into the valve body 310 and abuts against the compression ring 350, and the center of the fastener 330 is provided with a through hole 331. The thin film spring piece 340 is a disc-shaped sheet, the thickness of the thin film is selected according to the size of the valve, the diameter of the thin film is consistent with the diameter of the step of the through hole 331 of the valve body 310, and the circular arc gap 341 is opened under a certain pressure airflow, and the airflow can pass through.

[0038] In some specific embodiments of the utility model, it can also have the following additional technical features: the circular arc gap 341 is located outside the edge of the air inlet hole 321, and the circular arc gap 341 is within the inner diameter of the compression ring 350.

[0039] Through the above design, when there is no airflow entering the air inlet hole 321, the circular arc gap 341 of the thin film spring piece 340 resets, the thin film spring piece 340 is attached to the end face of the air inlet hole 321, and external air is prevented from entering. As long as the inner diameter of the compression ring 350 does not affect the opening of the circular arc gap 341 of the thin film spring piece 340, that is, the circular arc gap 341 of the thin film spring piece 340 is within the inner diameter of the compression ring 350, when the air inlet hole 321 has a leaking airflow, the airflow pushes open the circular arc gap 341 of the thin film spring piece 340; the leaking airflow stops, the circular arc gap 341 resets, and external air is prevented from entering.

[0040] In some specific embodiments of the utility model, it can also have the following additional technical features: the inner side wall of the valve body 310 has a groove 311, and the outer periphery of the fastener 330 is correspondingly provided with a convex ring 332. Specifically, the other end of the valve body 310 has an opening with a slope, thereby facilitating the embedding of the fastener 330, enabling the convex ring 332 to be located in the groove 311, thereby completing the connection and installation of the fastener 330 with the invention body, and completing the limiting of the compression ring 350.

[0041] In some specific embodiments of the utility model, it can also have the following additional technical features: in order to facilitate the observation and discovery of air leakage by nursing staff and doctors, the other end of the valve body 310 is detachably sealed and threadedly connected with a sealing end cover (not shown in the figure), and the sealing end cover is used for sealing the one-way valve 300. Since the initial air leakage has little effect, if the exhaust is immediately performed at this time, the pressure change of the negative pressure cavity will be small, thereby causing the piston 230 to be basically not moved, which will make it inconvenient for nursing staff and doctors to observe the occurrence of air leakage, so the sealing end cover is arranged to enable the nursing staff and doctors to perform the air release after discovering the occurrence of air leakage.

[0042] The utility model embodiments are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by ordinary skilled persons in the technical field without departing from the purpose of the utility model.

Claims

1. A chest drainage tube, characterized in that, The device comprises an inner tube (110) for drainage, an outer tube (120) for protection, a first sealing ring (130) and a second sealing ring (140), the outer tube (120) is sleeved on the outer tube (110), the first sealing ring (130) and the second sealing ring (140) are connected to the two ends of the outer tube (120) respectively, the two ends of the inner tube (110) are connected to the first sealing ring (130) and the second sealing ring (140) respectively, a buffer cavity is formed between the first sealing ring (130), the second sealing ring (140), the inner tube (110) and the outer tube (120), an elastic film (150) is arranged in the buffer cavity along the length direction, the two ends of the elastic film (150) are connected to the first sealing ring (130) and the second sealing ring (140) respectively and are enclosed with the outer tube (120) to form a leakage area (160), and a detection mechanism for detecting gas leakage is connected in the leakage area (160).

2. A chest drainage tube according to claim 1, characterised in that, The elastic film (150) has a gap with the inner tube (110).

3. A chest drainage tube according to claim 2, characterised in that, In the initial state, the leakage area (160) is in a negative pressure state, and the elastic film (150) is attached to the inner wall of the outer tube (120).

4. A chest drainage tube according to claim 3, characterised in that, The detection mechanism comprises a connecting pipe (210) and a detection pipe (220), one end of the detection pipe (220) is connected to the outer tube (120) through the connecting pipe (210) and communicates with the leakage area (160), the detection pipe (220) and the connecting pipe (210) are in a negative pressure state, and a piston (230) is movably connected in the detection pipe (220), and the circumferential surface of the piston (230) is in sealing abutment with the inner wall of the detection pipe (220).

5. A chest drainage tube according to claim 4, characterised in that, The detection pipe (220) is made of transparent hard material.

6. A chest drainage tube according to claim 5, characterised in that, An identification line is arranged on the detection pipe (220), the length of the identification line is equal to the length of the piston (230), and in the initial state, the upper and lower planes of the piston (230) are flush with the upper and lower planes of the identification line.

7. The chest drainage tube of claim 4, wherein, The connecting pipe (210) is further connected with a manifold (240), and the manifold (240) is connected with a one-way valve (300).

8. A chest drainage tube according to claim 7, characterised in that, The one-way valve (300) comprises a valve body (310), a cover (320), a fastener (330), a thin film spring (340) and a compression ring (350), the valve body (310) is hollow through, the cover (320) is sealingly and fixedly connected to one end of the valve body (310), the cover (320) is provided with an air inlet hole (321), the cover (320) is sealingly connected with the manifold (240), the compression ring (350) is arranged in the valve body (310) and connected with the cover (320), the thin film spring (340) is connected between the compression ring (350) and the cover (320), the thin film spring (340) is provided with a circular arc gap (341), the fastener (330) penetrates into the valve body (310) and abuts against the compression ring (350), the center of the fastener (330) is provided with a through hole (331).

9. A chest drainage tube according to claim 8, characterised in that, The circular arc gap (341) is located outside the edge of the air inlet hole (321), and the circular arc gap (341) is located within the inner diameter of the compression ring (350).

10. The chest drainage tube of claim 8, wherein, The inner side wall of the valve body (310) is provided with a groove (311), and the outer periphery of the fastener (330) is correspondingly provided with a convex ring (332).

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