CN223846026U

CN223846026U - Intrathoracic drain

Info

Publication number: CN223846026U
Application number: CN202520294214.8U
Authority: CN
Inventors: 周春芳; 王荫兰; 李翠; 邓磊; 梁柱; 段志勇; 刘静轶; 古剑雄
Original assignee: Affiliated Hospital of Guangdong Medical University
Current assignee: Affiliated Hospital of Guangdong Medical University
Priority date: 2025-02-24
Filing date: 2025-02-24
Publication date: 2026-01-30
Anticipated expiration: 2035-02-24

Abstract

This utility model discloses a chest drainage tube, including an inner tube, an outer tube, a first sealing ring, and a second sealing ring. The outer tube is sleeved over the inner tube. The first and second sealing rings are respectively connected to both ends of the outer tube. Both ends of the inner tube are connected to the first and second sealing rings, respectively. A buffer cavity is formed between the first and second sealing rings, the inner tube, and the outer tube. An elastic membrane is arranged along the length of the buffer cavity. Both ends of the elastic membrane are connected to the first and second sealing rings, respectively, and together with the outer tube, form a leakage area. A detection mechanism for detecting air leakage is connected to the leakage area. By setting up the inner and outer tubes, a double safety measure is formed to reduce the impact of air leakage from the outer tube on the drainage of the inner tube. At the same time, the elastic membrane forms a leakage area to prevent air leakage from the outer tube from seeping into the inner tube. Furthermore, the detection mechanism allows nursing staff to promptly detect leaks and perform further procedures.

Description

Intrathoracic drain

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a intrathoracic drain.

Background

In clinical practice, the use of intrathoracic drain is critical for treating intrathoracic hydrops and other conditions. A intrathoracic drain as disclosed in patent document CN201821206129.8, comprises a main tube and a fixing assembly. One end of the main pipe inserted into the chest cavity is bent to be arc-shaped, 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 component comprises a first air bag and a second air bag, the first air bag and the second air bag are arranged on the outer wall of the main pipe at intervals, and the second air bag is positioned on one side, away from the drainage port, of the first air bag. One end of the intrathoracic drain inserted into the thoracic cavity is bent to be arc-shaped, the intrathoracic drain can not stab viscera of a patient, and the pain of the patient can be relieved. The first air bag and the second air bag clamp the chest wall of a patient, so that the whole chest drainage tube is fixed and supported. The intrathoracic drain can avoid the movement of the drainage tube no matter pulled outwards or pushed inwards, thereby increasing the safety in the use process.

However, drainage tubes currently in use present some significant problems. Small damage of the chest tube caused by improper operation or external factors is not easy to be detected, and small air leakage caused by the fact that the orifice of the chest drainage tube is not tightly sutured is difficult to be found in time. Once such leakage occurs, the current conventional approach is to replace the entire chest bottle or set of devices directly. This not only increases the length of hospitalization of the patient, increasing his economic burden, but also increases the risk of infection due to the increased number of procedures. Therefore, the development of the thoracic drainage tube can effectively prevent pneumothorax from being caused after the drainage tube leaks air, and the thoracic drainage tube which can be found out in time when the air leakage occurs is urgent.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the intrathoracic drain provided by the utility model can effectively prevent pneumothorax from being caused after the drainage tube leaks air, and can be found out in time when the air leakage occurs.

According to the intrathoracic drain according to the first aspect of the embodiment of the utility model, the intrathoracic drain comprises an inner tube for drainage, an outer tube for protection, a first sealing ring and a second sealing ring, wherein the outer tube is sleeved outside the inner tube, the first sealing ring and the second sealing ring are respectively connected with two ends of the outer tube, two ends of the inner tube are respectively connected with the first sealing ring and the second sealing ring, a buffer cavity is formed among the first sealing ring, the second sealing ring, the inner tube and the outer tube, an elastic film is arranged in the buffer cavity along the length direction, two ends of the elastic film are respectively connected with the first sealing ring and the second sealing ring and form a leakage area with the outer tube in a surrounding mode, and a detection mechanism for detecting air leakage is connected in the leakage area.

The intrathoracic drain according to the embodiment of the utility model has the advantages that the influence of the leakage of the outer tube on the drainage of the inner tube is reduced by arranging the inner tube and the outer tube to form double insurance, meanwhile, the leakage area is formed by arranging the elastic film to prevent the leakage of the outer tube from penetrating into the inner tube, and the leakage area is provided with the detection mechanism for detecting the leakage, so that nursing staff can find the leakage in time to perform further operation.

According to some embodiments of the utility model, there is a gap between the elastic membrane and the inner tube.

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.

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 with the outer pipe through the connecting pipe and is communicated with the leakage area, the detection pipe and the connecting pipe are in negative pressure states, a piston is movably connected in the detection pipe, and the circumference of the piston is in sealing abutting joint with the inner wall of the detection pipe.

According to some embodiments of the utility model, the detection tube is made of transparent hard material.

According to some embodiments of the utility model, the detection tube is provided with a marking line, the length of the marking line is equal to that of the piston, and in an initial state, the upper plane and the lower plane of the piston are flush with the upper plane and the lower plane of the marking line.

According to some embodiments of the utility model, a manifold is further connected to the connecting tube, and a check valve is connected to the manifold.

According to some embodiments of the utility model, the one-way valve comprises a valve body, a sealing cover, a fastening piece, a film elastic piece and a pressing ring, wherein the valve body is hollow and is fixedly connected to one end of the valve body in a sealing way, an air inlet hole is formed in the sealing cover, the sealing cover is in sealing connection with the manifold, the pressing ring is arranged in the valve body and is connected with the sealing cover in a fitting way, the film elastic piece is connected between the pressing ring and the sealing cover, an arc gap is formed in the film elastic piece, the fastening piece penetrates into the valve body and abuts against the pressing ring, and a through hole is formed in the center of the fastening piece.

According to some embodiments of the utility model, the circular arc gap is located outside the edge of the air inlet hole, and the circular arc gap is located inside the inner diameter of the compression ring.

According to some embodiments of the utility model, the valve body has a groove on an inner sidewall thereof, and the fastener has a collar on an outer circumference thereof.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic cross-sectional view of a intrathoracic drain according to an embodiment of the utility model.

FIG. 2 is a schematic cross-sectional view of a one-way valve of a intrathoracic drain according to an embodiment of the utility model.

FIG. 3 is a schematic view of the structure of a thin film spring of a one-way valve of a intrathoracic drain according to an embodiment of the utility model.

110. The sealing device comprises an inner pipe, an outer pipe, 130, a first sealing ring, 140, a second sealing ring, 150, an elastic film, 160, a leakage area, 210, a connecting pipe, 220, a detection pipe, 230, a piston, 240, a manifold, 300, a one-way valve, 310, a valve body, 311, a groove, 320, a sealing cover, 321, an air inlet hole, 330, a fastener, 331, a through hole, 332, a convex ring, 340, a film spring, 341, an arc gap, 350 and a compression ring.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1, the intrathoracic drain according to the embodiment of the utility model comprises an inner tube 110 for drainage, an outer tube 120 for protection, a first sealing ring 130 and a second sealing ring 140, wherein the outer tube 120 is sleeved outside the inner tube 110, the first sealing ring 130 and the second sealing ring 140 are respectively connected to two ends of the outer tube 120, two ends of the inner tube 110 are respectively connected with the first sealing ring 130 and the second sealing ring 140, 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, two ends of the elastic film 150 are respectively connected with the first sealing ring 130 and the second sealing ring 140 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.

In the actual use process, the influence of the air leakage of the outer tube 120 on the drainage of the inner tube 110 is reduced by arranging the inner tube 110 and the outer tube 120 to form double insurance, and meanwhile, the elastic film 150 is arranged to form the leakage area 160, so that the condition that the air leakage of the outer tube 120 permeates into the inner tube 110 is avoided, and a detection mechanism for detecting the air leakage is arranged in the leakage area 160, so that nursing staff can conveniently find the air leakage in time to further operate.

In some embodiments of the present utility model, it may also have the additional feature that there is a gap between the elastic membrane 150 and the inner tube 110. Through this design, can make elastic membrane 150 have certain deformation space to can restrict gas leakage in the clearance, avoid gas leakage deformation oppression to inner tube 110 and lead to drainage unsmooth.

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 membrane 150.

In some embodiments of the present 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 an air-leak-free state.

In some embodiments of the present utility model, the detecting mechanism may further comprise a connecting pipe 210 and a detecting pipe 220, wherein one end of the detecting pipe 220 is connected with the outer pipe 120 through the connecting pipe 210 and is communicated with the drain region 160, the detecting pipe 220 and the connecting pipe 210 are in a negative pressure state, a piston 230 is movably connected in the detecting pipe 220, and the circumference of the piston 230 is in sealing abutting connection with the inner wall of the detecting pipe 220.

In some embodiments of the present utility model, the detection tube 220 may be made of transparent hard material.

In some embodiments of the present utility model, the detection tube 220 may be provided with a marking line (not shown in the figure), where the marking line has a length equal to that of the piston 230, and in an initial state, the upper and lower planes of the piston 230 are flush with the upper and lower planes of the marking line.

Specifically, the presence of the piston 230 divides the detection tube 220 into two negative pressure chambers, one of which communicates with the connection tube 210 and the leakage area 160, and the other of which does not communicate with the connection tube 210 and the leakage area 160.

Through the above design, when the outer tube 120 leaks air, the external air flow enters the leakage area 160 to increase the pressure of the leakage area 160, thereby increasing the pressure of the negative pressure cavity communicated with the connecting tube 210 and the leakage area 160 and pushing the piston 230 to move, so that the piston is misplaced with the identification line, thereby facilitating the nursing staff and doctors to recognize the leakage in time.

Referring to fig. 1, in some embodiments of the present utility model, there may be additional technical features in that a manifold 240 is further connected to the connection pipe 210, and a check valve 300 is connected to the manifold 240.

Referring to fig. 2 and 3, in some embodiments of the present utility model, the check valve 300 may further have additional technical features that the check valve 300 includes a valve body 310, a cover 320, a fastener 330, a film elastic sheet 340 and a pressing ring 350, the valve body 310 is hollow and penetrated, the cover 320 is fixedly connected to one end of the valve body 310 in a sealing manner, the cover 320 is provided with an air inlet 321, the cover 320 is connected with the manifold 240 in a sealing manner, the pressing ring 350 is disposed in the valve body 310 and is connected with the cover 320 in a fitting manner, the film elastic sheet 340 is connected between the pressing ring 350 and the cover 320, the film elastic sheet 340 has an arc gap 341, the fastener 330 penetrates into the valve body 310 and abuts against the pressing ring 350, and a through hole 331 is formed in the center of the fastener 330. The film spring 340 is a disc sheet, the thickness of the film is selected according to the size of the valve, the film diameter is consistent with the diameter of the step of the through hole 331 of the valve main body 310, the arc gap 341 is opened under the air flow of a certain pressure, and the air flow can pass through the arc gap 341.

In some embodiments of the present utility model, the circular arc gap 341 is located outside the edge of the air inlet hole 321, and the circular arc gap 341 is located inside the inner diameter of the pressure ring 350.

Through the design, when no air flow enters the air inlet hole 321, the arc gap 341 of the film elastic sheet 340 is reset, and the film elastic sheet 340 is attached to the end face of the air inlet hole 321 to prevent external air from entering. As long as the inner diameter of the press ring 350 does not affect the opening of the circular arc gap 341, that is, the circular arc gap 341 of the film elastic sheet 340 is within the inner diameter of the press ring 350, when the leaked air flow flows in from the air inlet 321, the air flow flushes the circular arc gap 341 of the film elastic sheet 340, the leaked air flow stops, and the circular arc gap 341 resets, so that the external air is prevented from entering.

In some embodiments of the present utility model, it may further have an additional technical feature that the inner sidewall of the valve body 310 has a groove 311, and the outer circumference of the fastening member 330 is correspondingly provided with a convex ring 332. Specifically, the opening at the other end of the valve body 310 has a slope, so that the fastener 330 can be conveniently inserted, and the convex ring 332 can be positioned in the groove 311, thereby completing the connection and installation of the fastener 330 and the utility model body, and completing the limit of the compression ring 350.

In some embodiments of the present utility model, it may have an additional technical feature that a sealing cap (not shown) is detachably and sealingly screw-coupled to the other end of the valve body 310 for sealing the check valve 300 in order to facilitate the observation and discovery of the leakage by the caregivers and doctors, and the sealing cap is provided to allow the caregivers and doctors to perform the leakage after the leakage is discovered because the initial effect of the leakage is not great, and the pressure change of the negative pressure chamber is not great and thus the piston 230 is not substantially moved if the leakage is immediately exhausted.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. The utility model provides a thoracic drainage tube, its characterized in that, including inner tube (110) that are used for the drainage, outer tube (120) that are used for the protection, first sealing ring (130) and second sealing ring (140), outer tube (120) cover is located outside inner tube (110), first sealing ring (130) and second sealing ring (140) are connected respectively in the both ends of outer tube (120), the both ends of inner tube (110) respectively with first sealing ring (130) and second sealing ring (140) are connected, first sealing ring (130) second sealing ring (140) inner tube (110) and be formed with the cushion chamber between outer tube (120), be provided with elastic membrane (150) along length direction in the cushion chamber, the both ends of elastic membrane (150) respectively with first sealing ring (130) and second sealing ring (140) are connected and with outer tube (120) enclose and form and leak drain region (160), be connected with the detection mechanism that is used for detecting in leak region (160).

2. The intrathoracic drain according to claim 1, wherein a gap is provided between the elastic membrane (150) and the inner tube (110).

3. The intrathoracic drain according to claim 2, wherein in an initial state, said leakage area (160) is in a negative pressure state, and said elastic membrane (150) is adhered to an inner wall of said outer tube (120).

4. The intrathoracic drain according to claim 3, wherein the detecting mechanism comprises a connecting pipe (210) and a detecting pipe (220), one end of the detecting pipe (220) is connected with the outer pipe (120) through the connecting pipe (210) and is communicated with the leakage area (160), the detecting pipe (220) and the connecting pipe (210) are in negative pressure states, a piston (230) is movably connected in the detecting pipe (220), and the circumference of the piston (230) is in sealing abutting joint with the inner wall of the detecting pipe (220).

5. The drainage tube according to claim 4, wherein the detection tube (220) is made of a transparent hard material.

6. The intrathoracic drain according to claim 5, wherein the detecting tube (220) is provided with a marking wire, the marking wire has a length equal to that of the piston (230), and in an initial state, upper and lower planes of the piston (230) are flush with upper and lower planes of the marking wire.

7. The intrathoracic drain according to claim 4, wherein the connecting tube (210) is further connected with a manifold (240), and wherein the manifold (240) is connected with a one-way valve (300).

8. The intrathoracic drain according to claim 7, wherein the one-way valve (300) comprises a valve main body (310), a sealing cover (320), a fastener (330), a film spring (340) and a pressing ring (350), wherein the valve main body (310) is hollow and is communicated, the sealing cover (320) is fixedly connected to one end of the valve main body (310) in a sealing manner, an air inlet hole (321) is formed in the sealing cover (320), the sealing cover (320) is in sealing connection with the manifold (240), the pressing ring (350) is arranged in the valve main body (310) and is connected with the sealing cover (320) in a fitting manner, the film spring (340) is connected between the pressing ring (350) and the sealing cover (320), an arc gap (341) is formed in the film spring (340), the fastener (330) penetrates into the valve main body (310) and is abutted with the pressing ring (350), and a through hole (331) is formed in the center of the fastener (330).

9. The intrathoracic drain according to claim 8, wherein the circular arc slit (341) is located outside the rim of the inlet aperture (321), the circular arc slit (341) being inside the inner diameter of the pressure ring (350).

10. The intrathoracic drain according to claim 8, wherein the valve body (310) has a recess (311) on an inner side wall thereof, and the fastener (330) has a convex ring (332) on an outer circumference thereof.