A device for closed thoracic drainage of a neonate

Abstract

The application discloses a device for closed thoracic drainage of a newborn, comprising a puncture catheter, a first three-way pipe, a second three-way pipe, a flushing pipeline and a flow path control device; the first three-way pipe is connected with the puncture catheter, a connecting pipe and the flushing pipeline; the second three-way pipe is connected with the connecting pipe, a drainage container and a suction device, and a one-way valve is arranged at a fourth interface; the flow path control device controls the on-off of each interface of the first three-way pipe and the second three-way pipe, so that the device can be switched among a suction state, a cleaning state, a gas exhaust state and a medicine supply state. Through the arrangement of the flushing pipeline and the flow path control device, the whole process of liquid suction, pipeline cleaning, residual removal and medicine injection can be sequentially completed under the premise of maintaining the airtightness of the closed drainage system, the risk of secondary pollution or infection caused by the residual in the pipeline being pushed back into the human body is effectively avoided, and the device is especially suitable for the closed thoracic drainage and local medicine supply operation of the newborn with extremely high safety requirements.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to a closed thoracic drainage device suitable for newborns, especially low birth weight infants. Background Technology

[0002] Closed thoracic drainage is a common clinical treatment for neonatal pneumothorax, pleural effusion, and other conditions. The principle involves inserting a drainage tube into the patient's thoracic cavity, with the distal end connected to a sealed drainage bottle or container. The pressure difference continuously draws gas or fluid out of the thoracic cavity, promoting lung re-expansion and restoring negative pressure in the thoracic cavity.

[0003] However, newborns, especially low birth weight infants, have small thoracic cavities and delicate tissues, requiring extremely high precision, flexibility, and ease of operation from the instruments used in closed chest drainage. Current closed chest drainage procedures typically use standard-sized needles or catheters to enter the chest cavity, but these are not suitable for thoracentesis in newborns, especially low birth weight infants, and therefore require improvement. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a closed thoracic drainage device suitable for newborns.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A closed chest drainage device suitable for newborns, comprising: A puncture needle, comprising a needle tip and a guide wire, wherein the needle tip has a maximum length of 3 cm, and the needle tip is uniformly marked with a first mark along its length, and the guide wire is uniformly marked with a second mark along its length. A puncture catheter for connecting a puncture needle; The first three-way tube includes a first interface, a second interface and a third interface, wherein the first interface is connected to the puncture catheter; The second three-way pipe includes a fourth interface, a fifth interface, and a sixth interface. The fourth interface is connected to the second interface through a connecting pipe. The fifth interface is used to connect to the drainage container. The sixth interface is used to connect to the suction device. The fourth interface is equipped with a one-way valve. A flushing line, which is connected to a third interface and used to introduce flushing fluid into the connecting pipe; A flow path control device includes a first control mechanism and a second control mechanism respectively disposed on a first tee pipe and a second tee pipe, wherein the flow path control device is used to keep the device in at least the following four operating states: Aspiration state: The first and second interfaces are connected, the fifth and sixth interfaces are connected, and the third interface is closed; operate the aspirator, aspirate through the sixth interface, so that the fluid in the puncture catheter enters the aspiration tube in sequence through the connecting tube and the second three-way tube, and enters the drainage container through the fifth interface during the aspiration tube push process; Cleaning status: The first interface is closed, the second interface is connected to the third interface, and the fifth interface is connected to the sixth interface; the suction device is used to guide the flushing fluid in the flushing pipeline to flow sequentially through the third interface, the second interface, the connecting pipe, the fourth interface, and the second three-way pipe to the suction device, and pushes the flushing fluid through the fifth interface to the drainage container through the suction device; Exhaust status: The first and fifth interfaces are closed; operate the suction device to push the drug through the sixth interface, so that the cleaning fluid or gas remaining in the connecting tube and the second three-way tube is pushed into the flushing pipeline; Medication supply status: The third and fifth interfaces are closed, and the first and second interfaces are connected; the aspirator is used to push the medication, allowing the medication connection tube and puncture catheter to enter the human body.

[0006] As a further improvement of the present invention, both the first control mechanism and the second control mechanism include a valve core, and both the first three-way pipe and the second three-way pipe are provided with a control knob. The control knob is connected to the valve core and is used to drive the valve core to rotate. The valve core is provided with three channels.

[0007] As a further improvement of the present invention, a first magnetic element and a second magnetic element are respectively provided at two adjacent channel ports.

[0008] As a further improvement of the present invention, the third interface is provided with a movable first lock head, which magnetically engages with the first magnetic component and the second magnetic component. The first magnetic component is used to attract the first lock head to move the first lock head and block the third interface; The second magnetic component is used to repel the first lock head, thereby causing the first lock head to move and open the third interface.

[0009] As a further improvement of the present invention, the first lock head end is provided with a third magnetic element, the third magnetic element attracts the first magnetic element, and the third magnetic element repels the second magnetic element.

[0010] As a further improvement of the present invention, a one-way valve is provided at the fourth interface, and a liquid passage gap is provided between the one-way valve and the fourth interface. The liquid passage gap is connected to the connecting pipe and the valve core respectively. A movable second lock head is provided in the fourth interface, and the second lock head is magnetically attracted to the first magnetic component and the second magnetic component. The first magnetic component is used to repel the second locking head, thereby causing the second locking head to move and block the liquid passage gap; The second magnetic component is used to attract the second lock head so as to move the second lock head to open the liquid passage gap.

[0011] As a further improvement of the present invention, the second lock head end is provided with a fourth magnetic element, which is attracted to the first magnetic element and repelled by the second magnetic element.

[0012] The beneficial effects of this invention are: By shortening the size of the puncture needle to fit newborns, the risk of contamination from contact with surrounding objects can be reduced during the procedure. At the same time, the finer operation can be achieved by setting graduations on the guidewire.

[0013] By incorporating a first three-way connector, a second three-way connector, a flushing line, and a flow control device, four operating states can be switched between. After fluid aspiration, switching to the flushing state allows for thorough cleaning of the entire connecting tubing with flushing fluid. Subsequently, the venting state removes any residual cleaning fluid or gas from the tubing into the flushing line, ensuring tubing cleanliness. Finally, in the medication delivery state, medication is directly injected into the patient through the clean tubing. This avoids the problem of residual aspiration material being re-injected into the body during medication administration after closed chest drainage, significantly improving the safety of neonatal closed chest drainage and local drug administration. Attached Figure Description

[0014] Figure 1 A schematic diagram of the invention of a puncture needle; Figure 2 This is an overall schematic diagram of the suction state of the present invention; Figure 3 for Figure 2 Enlarged view of section A; Figure 4 for Figure 2 Enlarged view of section B; Figure 5 This is a schematic diagram of the first tee pipe connection during the cleaning process; Figure 6 This is a schematic diagram of the second three-way pipe connection in the exhaust state of the present invention; Figure 7 This is a schematic diagram of the overall connection of the drug supply state of the present invention.

[0015] Figure label: 10. Puncture needle; 11. Needle tip; 12. Guide wire; 13. First marker; 14. Second marker; 100. Puncture catheter; First tee pipe; 210, first interface; 220, second interface; 230, third interface; 240, first lock head; 241, third magnetic component; Second three-way pipe; 310, fourth interface; 320, fifth interface; 330, sixth interface; 340, one-way valve; 350, liquid passage gap; 360, second lock head; 361, fourth magnetic component; Flushing the pipeline; Connecting pipe; First control body; Second control mechanism; 800, valve core; 810, channel; 820, first magnetic component; 830, second magnetic component. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals.

[0017] Please see Figure 1-7 This embodiment provides a closed thoracic drainage device suitable for newborns. The device mainly includes a puncture needle 10, a puncture catheter 100, a first three-way tube 200, a second three-way tube 300, an irrigation tube 400, and a flow path control device.

[0018] Specifically, the puncture needle 10 includes a needle tip 11 and a guide wire 12. The needle tip 11 is evenly arranged with first marks 13 along its length, and the guide wire 12 is evenly arranged with second marks 14 along its length. In this embodiment, the first marks 13 and the second marks 14 are both color dots arranged along the length, with a spacing of 1 cm between each color dot. The operator judges the puncture depth by the color dots, thereby achieving precise puncture control to suit newborns.

[0019] Furthermore, in this embodiment, the needle 11 is 3cm to be suitable for use with newborns. In other embodiments, the needle 11 can also be 2.5cm or 2cm.

[0020] Furthermore, in this embodiment, the guide wire 12 is 30cm long, thereby reducing the risk of contamination from contact with surrounding objects during operation.

[0021] Furthermore, in this embodiment, it also includes a 30cm side drape, and medical gauze with side lengths of 3cm and 4cm respectively, while a dressing with a side length of 5cm is selected. The above-mentioned size optimization is to adapt to the use of newborns.

[0022] Furthermore, it also includes sterile cotton balls, surgical forceps, blades, scissors, heparin caps, 10ml syringes, etc. All of the above devices are carried in a bag for integrated use, which greatly optimizes the operation of medical staff and realizes the preparation of the whole process before and after puncture.

[0023] After the puncture is completed, the end of the puncture catheter 100 is inserted into the child's body and aspiration begins.

[0024] Specifically, the end of the puncture catheter 100 is preferably curved, and an opening is formed on one side of the puncture catheter 100 to adapt to the anatomical structure of the neonatal chest cavity and prevent tissue blockage.

[0025] Furthermore, the first three-way tube 200 includes a first interface 210, a second interface 220, and a third interface 230. The first interface 210 is connected to the puncture catheter 100. The flushing line 400 is connected to the third interface 230 and is used to introduce flushing fluid, such as physiological saline, into the device.

[0026] The second three-way tube 300 has a fourth port 310, a fifth port 320, and a sixth port 330. The fourth port 310 is connected to the second port 220 of the first three-way tube 200 via a connecting tube 500. The fifth port 320 is used to connect a drainage container, which in this embodiment is a drainage bottle. A negative pressure mechanism can be installed inside the drainage bottle to achieve continuous, autonomous, long-term aspiration. The sixth port 330 is used to connect an aspirator, specifically, in this embodiment, the aspirator is a syringe as described in the prior art. A one-way valve 340 is provided at the fourth port 310. This one-way valve 340 only allows fluid to flow from the connecting tube 500 into the interior of the second three-way tube 300, preventing backflow.

[0027] The flow path control device includes a first control mechanism 600 disposed on the first three-way pipe 200 and a second control mechanism 700 disposed on the second three-way pipe 300. By operating the first control mechanism 600 and the second control mechanism 700, the entire device can be switched between four working states: suction state, cleaning state, exhaust state, and drug supply state.

[0028] In this embodiment, both the first control mechanism 600 and the second control mechanism 700 include a valve core 800. A control knob is provided on the outside of both the first three-way pipe 200 and the second three-way pipe 300. The control knob is connected to the valve core 800 and is used to drive the valve core 800 to rotate. The valve core 800 has three channels 810. By rotating the valve core 800, two of the three channels can be opened, while the third channel is closed.

[0029] Furthermore, in order to achieve automatic closing and opening of the interface, a first magnetic element 820 and a second magnetic element 830 are respectively provided at the ports of the two adjacent channels 810 of the valve core 800. The first magnetic element 820 and the second magnetic element 830 have opposite magnetic properties.

[0030] Accordingly, a first lock head 240 is movably disposed at the third interface 230. A third magnetic element 241 is provided at the end of the first lock head 240. The third magnetic element 241 is attracted to the first magnetic element 820 and repelled by the second magnetic element 830. When the valve core 800 rotates to a specific position, causing the first magnetic element 820 and the third magnetic element 241 to face each other, the magnetic attraction will drive the first lock head 240 to move, thereby blocking the third interface 230. When the valve core 800 rotates, causing the second magnetic element 830 and the third magnetic element 241 to face each other, the magnetic repulsion will push the first lock head 240 to move in the opposite direction, thereby opening the third interface 230.

[0031] Furthermore, a liquid passage gap 350 is provided between the one-way valve 340 and the inner wall of the fourth port 310. This liquid passage gap 350 connects the channels of the connecting pipe 500 and the valve core 800. A second locking head 360 is movably disposed within the fourth port 310. A fourth magnetic element 361 is provided at the end of the second locking head 360. The fourth magnetic element 361 is attracted to the first magnetic element 820 and repelled by the second magnetic element 830. When the valve core 800 rotates to a specific position, and the first magnetic element 820 and the fourth magnetic element 361 are opposite each other, the magnetic attraction drives the second locking head 360 to move, blocking the liquid passage gap 350. When the second magnetic element 830 and the fourth magnetic element 361 are opposite each other, the magnetic repulsion pushes the second locking head 360 to move, opening the liquid passage gap 350.

[0032] With the above structure, the opening and closing of each port of the first three-way pipe 200 and the opening and closing of the liquid passage gap 350 in the fourth port 310 can be achieved simultaneously by simply rotating the valve core 800, which is convenient to operate.

[0033] The following describes the specific operating procedures of this device in four working states, based on the above structure: Aspiration state: Medical personnel turn the control knob to rotate the valve core 800 of the first control mechanism 600 and the second control mechanism 700, putting the device into aspiration state. In this state, the first port 210 and the second port 220 of the first three-way tube 200 are connected, the third magnetic element 241 is attracted by the first magnetic element 820, the third port 230 is blocked by the first locking head 240, and the fourth magnetic element 361 is repelled by the second magnetic element 830. The second locking head 360 moves and closes the fluid passage gap 350. At the same time, the fifth port 320 and the sixth port 330 of the second three-way tube 300 are connected. At this time, the fluid in the puncture catheter 100 passes sequentially through the one-way valve at the first port 210, the second port 220, the connecting tube 500, the one-way valve at the fourth port 310, and the fifth port 320, and enters the drainage container. Due to the presence of the one-way valve and the closure of the fluid passage gap 350, the operator can perform additional active aspiration using the aspirator to significantly increase the aspiration speed.

[0034] Cleaning State: After suction is complete, switch to cleaning state. By operating the control knob, close the first port 210 of the first three-way tube 200, and connect the second port 220 and the third port 230. The state of the second three-way tube 300 remains unchanged, i.e., the fifth port 320 and the sixth port 330 are connected. At this time, suction can be performed using the negative pressure of the drainage container, allowing the flushing fluid to flow sequentially through the third port 230, the second port 220, the connecting tube 500, the fourth port 310, and the fifth port 320 into the drainage container. Alternatively, the operator can actively operate the suction device to increase the suction speed. In this case, the flushing fluid in the flushing pipe 400 flows sequentially through the third port 230, the second port 220, the connecting tube 500, the fourth port 310, and the interior of the second three-way tube 300 until it reaches the suction device. Then, the suction device is operated to push the flushing fluid containing residual liquid in the pipeline into the drainage container through the fifth port 320. This process thoroughly cleans the inside of the connecting tube 500 and the second tee tube 300.

[0035] In the venting state, the purpose is to remove residual cleaning fluid from the device to reduce the amount of cleaning fluid entering the body. In this embodiment, the cleaning fluid is preferably physiological saline. After cleaning, the device enters the venting state. By operating the control knob, the first interface 210 is closed, and the second magnetic element 830 repels the third magnetic element 241 on the first lock head 240, thereby opening the third interface 230. At the same time, the second control mechanism is operated to close the fifth interface 320, and the fourth magnetic element 361 attracts the first magnetic element 820, thereby moving the second lock head 360 to open the liquid passage gap 350. At this time, the connecting tube 500, the second three-way tube 300 and the aspirator form a closed loop, while the puncture catheter 100 and the drainage container are blocked. Operate the aspirator and inject the drug through the sixth port 330. Since the fifth port 320 is closed and the third port 230 is open, the pressure generated by the injection will discharge the small amount of cleaning fluid or gas remaining in the connecting tube 500 and the second three-way tube 300 through the third port 230, thereby clearing all residual liquids and gases in the drug delivery pathway.

[0036] Medication delivery status: By operating the control knob, the first port 210 and the second port 220 of the first three-way tube 200 are connected. At this time, the third magnetic component 241 re-attracts to the first magnetic component 820, closing the third port 230. Simultaneously, the fifth port 320 of the second three-way tube 300 is closed, and the sixth port 330 and the fourth port 310 are connected. The aspirator is operated to push the medication into the aspirator. Because the fifth port 320 is closed, the medication flows sequentially through the second three-way tube 300, the fourth port 310, the connecting tube 500, the second port 220, and the first port 210, finally entering the patient's pleural cavity precisely and safely through the puncture catheter 100. Since the entire administration route has been cleaned and vented before administration, no residual fluid or air is pushed into the patient's body.

[0037] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A closed thoracic drainage device suitable for newborns, characterized in that, include: A puncture needle (10) includes a needle tip (11) and a guide wire (12). The needle tip (11) has a maximum length of 3 cm. The needle tip (11) is evenly marked with a first mark (13) along its length direction. The guide wire (12) is evenly marked with a second mark (14) along its length direction. Puncture catheter (100); A first three-way tube (200) is provided, comprising a first interface (210), a second interface (220) and a third interface (230), wherein the first interface (210) is connected to a puncture catheter (100); The second three-way pipe (300) includes a fourth interface (310), a fifth interface (320) and a sixth interface (330). The fourth interface (310) is connected to the second interface (220) through a connecting pipe (500). The fifth interface (320) is used to connect to a drainage container. The sixth interface (330) is used to connect to a suction device. The fourth interface (310) is equipped with a one-way valve (340). A flushing line (400) is connected to a third interface (230) and used to introduce flushing fluid into a connecting pipe (500); The flow path control device includes a first control mechanism (600) and a second control mechanism (700) respectively disposed on a first tee pipe (200) and a second tee pipe (300), and the flow path control device is used to keep the device in at least the following four operating states: Aspiration state: The first interface (210) and the second interface (220) are connected, the fifth interface (320) and the sixth interface (330) are connected, and the third interface (230) is closed; the aspirator is operated, and aspiration is performed through the sixth interface (330), so that the fluid in the puncture catheter (100) enters the aspiration tube after passing through the connecting tube (500) and the second three-way tube (300) in sequence, and enters the drainage container through the fifth interface (320) during the pushing process of the aspiration tube; Cleaning status: The first interface (210) is closed, the second interface (220) and the third interface (230) are connected, and the fifth interface (320) and the sixth interface (330) are connected; the suction device is used to guide the flushing fluid in the flushing pipeline (400) to flow sequentially through the third interface (230), the second interface (220), the connecting pipe (500), the fourth interface (310), and the second three-way pipe (300) to the suction device, and pushes the flushing fluid through the fifth interface (320) to the drainage container; Exhaust status: The first interface (210) and the fifth interface (320) are closed; the suction device is operated to push the drug through the sixth interface (330), so that the cleaning liquid or gas remaining in the connecting tube (500) and the second three-way tube (300) is pushed into the flushing pipeline (400); Drug supply status: The third interface (230) and the fifth interface (320) are closed, and the first interface (210) and the second interface (220) are connected; the aspirator is used to push the drug, so that the drug connection tube (500) and the puncture catheter (100) enter the human body.

2. The closed thoracic drainage device for newborns according to claim 1, characterized in that, The first control mechanism (600) and the second control mechanism (700) both include a valve core (800). The first three-way pipe (200) and the second three-way pipe (300) are both provided with control knobs. The control knobs are connected to the valve core (800) and are used to drive the valve core (800) to rotate. The valve core (800) is provided with three channels (810).

3. A closed thoracic drainage device for newborns according to claim 2, characterized in that, A first magnetic element (820) and a second magnetic element (830) are respectively provided at the ports of two adjacent channels (810).

4. A closed thoracic drainage device for newborns according to claim 3, characterized in that, The third interface (230) is provided with a movable first lock head (240), which magnetically engages with the first magnetic component (820) and the second magnetic component (830). The first magnetic component (820) is used to attract the first lock head (240) to move the first lock head (240) to block the third interface (230); The second magnetic element (830) is used to repel the first lock head (240) so as to move the first lock head (240) to open the third interface (230).

5. A closed thoracic drainage device for newborns according to claim 4, characterized in that, The first lock head (240) has a third magnetic element (241) at its end. The third magnetic element (241) is attracted to the first magnetic element (820) and repelled by the second magnetic element (830).

6. A closed thoracic drainage device for newborns according to claim 3, characterized in that, A one-way valve (340) is provided at the fourth interface (310). A liquid passage gap (350) is provided between the one-way valve (340) and the fourth interface (310). The liquid passage gap (350) is connected to the connecting pipe (500) and the valve core (800) respectively. A movable second lock head (360) is provided in the fourth interface (310). The second lock head (360) is magnetically attracted to the first magnetic component (820) and the second magnetic component (830). The first magnetic element (820) is used to attract the second lock head (360) so as to drive the lock head to move and block the liquid passage gap (350); The second magnetic element (830) is used to repel the second lock head (360) to move the second lock head (360) to open the liquid passage gap (350).

7. A closed thoracic drainage device for newborns according to claim 5, characterized in that, The second lock head (360) has a fourth magnetic element (361) at its end. The fourth magnetic element (361) is attracted to the first magnetic element (820) and repelled by the second magnetic element (830).

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