Thoracic closed drainage tube and implantation depth calibration method thereof

Abstract

The thoracic cavity closed drainage tube comprises a drainage tube body, a sliding sleeve is arranged in the drainage tube body, an annular groove is formed in the outer side surface of the sliding sleeve, a first annular elastic air bag and a second annular elastic air bag are arranged in the annular groove, and a plurality of annularly-distributed positioning holes are formed in the drainage tube body; the sliding sleeve is connected with a second air pipe pulling the sliding sleeve to move in the drainage pipe, one end of the second air pipe communicates with the second annular elastic air bag, and the other end of the second air pipe extends out of the drainage pipe and is connected with an air pressure detection unit. The side holes can be blocked in the indwelling catheter process, liquid in the chest cavity is prevented from flowing out of the side holes too early, and whether the last side hole smoothly enters the chest cavity or not can be rapidly and visually judged according to the reading of the external air pressure detection unit. The positioning holes are further used for being matched with the positioning holes to form a plurality of flexible positioning convex points to assist the drainage tube in positioning, and great convenience is brought to intubation operation of the drainage tube.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drainage tube, more particularly, to a closed thoracic drainage tube and a method for marking the insertion depth of the closed thoracic drainage tube. BACKGROUND

[0002] The closed thoracic drainage is a basic operation commonly used in thoracic surgery, respiratory department and emergency medicine, which is used for the treatment of pneumothorax, hemothorax and pleural effusion. The existing drainage tube usually has a plurality of side holes at the end of the tube body, and a scale is arranged on the outer wall of the tube body to record the insertion depth.

[0003] The existing technology has the following problems:

[0004] 1. The depth record does not match the actual situation: In clinical operation, the "tube tip" is often used as the reference for insertion depth, but the actual drainage effect depends on whether the last side hole completely enters the chest cavity.

[0005] 2. There is a risk of air leakage / ineffective drainage: If the last side hole stays in the subcutaneous tissue or outside the chest wall, it will cause air leakage or poor liquid drainage.

[0006] 3. Lack of unified recording standard: The expressions of "insertion depth" by the operators and medical records are inconsistent, which affects scientific research statistics and may also cause medical disputes.

[0007] In addition, in the existing technology, the determination of the tube insertion depth still needs to rely on the results of chest X-ray or chest CT, which is time-consuming and has poor flexibility, and adjusting the insertion depth will also cause additional pain to the patient.

[0008] Therefore, there is an urgent need for a closed thoracic drainage tube that can timely grasp the insertion depth and determine whether the last side hole completely enters the chest cavity, and a method for marking the insertion depth of the closed thoracic drainage tube. SUMMARY

[0009] The technical problem to be solved by the present application is to provide a closed thoracic drainage tube and a method for marking the insertion depth of the closed thoracic drainage tube, which solves the above-mentioned defects of the prior art.

[0010] The technical solution adopted by the present application to solve the technical problem is:

[0011] The application discloses a closed thoracic drainage tube, which comprises a drainage tube, two side holes are arranged on the front end of the drainage tube at intervals along the length direction and are not opposite to each other, a sliding sleeve is arranged in the drainage tube, an annular groove is arranged on the outer surface of the sliding sleeve, a first annular elastic air bag and a second annular elastic air bag are arranged in the annular groove, and the first annular elastic air bag and the second annular elastic air bag are communicated through a first air pipe; in an initial state, the first annular elastic air bag is inflated and partially enters the side hole of the front end and the entering part exceeds the outer surface of the drainage tube, and the second annular elastic air bag is inflated and partially enters the side hole of the tail end and the entering part exceeds the outer surface of the drainage tube; a plurality of annularly distributed positioning holes are arranged on the drainage tube; the sliding sleeve is connected with a second air pipe for pulling the sliding sleeve to move in the drainage tube, one end of the second air pipe is communicated with the second annular elastic air bag, and the other end of the second air pipe extends to the outside of the drainage tube and is connected with an air pressure detection unit.

[0012] The closed thoracic drainage tube provided by the application, wherein the sliding sleeve comprises a sleeve and two rings arranged at two ends of the sleeve respectively; the outer surface of the sleeve is lower than the outer surface of the rings to form an annular groove; the first annular elastic air bag and the second annular elastic air bag are fixed in the annular groove at two ends respectively.

[0013] The closed thoracic drainage tube provided by the application, wherein the second air pipe passes through the ring at the lower end and is communicated with the second annular elastic air bag; a multi-way valve is arranged at the tail end of the drainage tube, and the second air pipe passes through a branch pipe of the multi-way valve and extends to the outside of the drainage tube.

[0014] The closed thoracic drainage tube provided by the application, wherein an end cover is arranged on the branch pipe of the multi-way valve, and a sealing sleeve for the second air pipe to pass through is arranged on the end cover.

[0015] The closed thoracic drainage tube provided by the application, wherein a third air pipe is arranged at the tail end of the second air pipe, and an air pressure adjusting unit is connected to the third air pipe; the air pressure in the first annular elastic air bag and the second annular elastic air bag can be adjusted by the air pressure adjusting unit when the tube is placed and removed.

[0016] The closed thoracic drainage tube provided by the application, wherein another branch pipe of the multi-way valve is used for connecting a water seal bottle.

[0017] The closed thoracic drainage tube provided by the application, wherein a sealing film for covering a skin incision is arranged on the drainage tube.

[0018] The closed thoracic drainage tube provided by the application, wherein a scale is arranged on the drainage tube, and the front end of the drainage tube is taken as a starting point of the scale.

[0019] A method for calibrating the depth of placement of a closed thoracic drainage tube, which applies the closed thoracic drainage tube as described above, wherein the method comprises the steps of:

[0020] In an initial state, the first annular elastic air bag is inflated and partially enters the side hole at the front end and partially exceeds the outer surface of the drainage tube, and the second annular elastic air bag is inflated and partially enters the side hole at the tail end and partially exceeds the outer surface of the drainage tube.

[0021] During the placement of the drainage tube, the whole formed by the first annular elastic air bag and the second annular elastic air bag is monitored by the air pressure detection unit, and when the drainage tube is placed into the side hole at the tail end and enters the thoracic cavity, the internal air pressure of the whole formed by the first annular elastic air bag and the second annular elastic air bag is maintained within a constant set air pressure range.

[0022] Pulling the second air tube causes the sliding sleeve to move outward to correspond to the first annular elastic air bag and the plurality of positioning holes, at this time, the second annular elastic air bag is extruded by the inner wall of the drainage tube to cause part of the gas inside to enter the first annular elastic air bag, and the first annular elastic air bag partially enters the positioning hole and partially exceeds the outer surface of the drainage tube, and the plurality of excess parts form positioning protrusions on the outer surface of the drainage tube, which extrude the subcutaneous tissue for positioning.

[0023] The beneficial effects of the present application are that in an initial state, the first annular elastic air bag is inflated and partially enters the side hole at the front end and partially exceeds the outer surface of the drainage tube, and the second annular elastic air bag is inflated and partially enters the side hole at the tail end and partially exceeds the outer surface of the drainage tube; during the placement of the drainage tube, the whole formed by the first annular elastic air bag and the second annular elastic air bag is monitored by the air pressure detection unit, and when the drainage tube is placed into the side hole at the tail end and enters the thoracic cavity, the internal air pressure of the whole formed by the first annular elastic air bag and the second annular elastic air bag is maintained within a constant set air pressure range; pulling the second air tube causes the sliding sleeve to move outward to correspond to the first annular elastic air bag and the plurality of positioning holes, at this time, the second annular elastic air bag is extruded by the inner wall of the drainage tube to cause part of the gas inside to enter the first annular elastic air bag, and the first annular elastic air bag partially enters the positioning hole and partially exceeds the outer surface of the drainage tube, and the plurality of excess parts form positioning protrusions on the outer surface of the drainage tube, which extrude the subcutaneous tissue for positioning.

[0024] By applying the method of this application, the first and second annular elastic airbags can not only block the side holes during tube insertion to prevent premature outflow of intrathoracic fluid (which would interfere with tube insertion), but also quickly and intuitively determine whether the last side hole has been successfully inserted into the thoracic cavity by reading the external air pressure detection unit. In addition, they are used to cooperate with multiple positioning holes to form multiple flexible positioning protrusions to assist in the positioning of the drainage tube. Moreover, the sliding sleeve can also support the drainage tube in the subcutaneous tissue part to prevent the drainage effect from being affected by compression and deformation. This achieves a multi-purpose technical effect and can bring great convenience to the insertion of drainage tubes. At the same time, it also has the characteristics of simple structure, convenient operation and low cost, and is suitable for promotion and popularization. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0026] Figure 1 This is a cross-sectional view of the initial state structure of a closed thoracic drainage tube according to a preferred embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional view of the inserted closed thoracic drainage tube according to a preferred embodiment of the present invention.

[0028] Figure 3 This is a flowchart of a method for calibrating the insertion depth of a closed thoracic drainage tube according to a preferred embodiment of the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0030] The preferred embodiment of the present invention is a closed chest drainage tube, such as... Figure 1 As shown, see also Figure 2The system includes a drainage tube 1, with two non-aligned side holes 10 spaced apart at the front end along its length. A sliding sleeve 2 is provided inside the drainage tube 1, and an annular groove 20 is provided on the outer surface of the sliding sleeve 2. A first annular elastic airbag 21 and a second annular elastic airbag 22 are provided within the annular groove 20. The first annular elastic airbag 21 and the second annular elastic airbag 22 are connected through a first air tube 25. In the initial state, the first annular elastic airbag 21 inflates and partially enters the front side hole 10, with the entered portion extending beyond the outer surface of the drainage tube 1. The second annular elastic airbag 22 inflates and partially enters the tail side hole 10, with the entered portion extending beyond the outer surface of the drainage tube 1. The drainage tube 1 is provided with multiple annularly distributed positioning holes 11. A second air tube 23 is connected to the sliding sleeve 2 to pull it to move inside the drainage tube 1. One end of the second air tube 23 is connected to the second annular elastic airbag 22, and the other end extends to the outside of the drainage tube 1 and is connected to a pressure detection unit 3.

[0031] In the initial state, the first annular elastic airbag 21 inflates and partially enters the front side hole 10, with the entered portion extending beyond the outer surface of the drainage tube 1. The second annular elastic airbag 22 inflates and partially enters the rear side hole 10, with the entered portion extending beyond the outer surface of the drainage tube 1. During the insertion of the drainage tube 1, the air pressure is monitored by the air pressure detection unit 3 on the entire structure consisting of the first annular elastic airbag 21 and the second annular elastic airbag 22. When the drainage tube 1 is inserted into the rear side hole 10 and also enters the pleural cavity, the pressure of the entire structure consisting of the first annular elastic airbag 21 and the second annular elastic airbag 22 is monitored. The air pressure will be maintained within a constant set air pressure range; pull the second air tube 23 to move the sliding sleeve 2 outward until the first annular elastic airbag 21 corresponds to the multiple positioning holes 11. At this time, the second annular elastic airbag 22 will be squeezed by the inner wall of the drainage tube 1, causing some of the gas inside to enter the first annular elastic airbag 21. The first annular elastic airbag 21 will partially enter the positioning hole 11 and the part of the entry will extend beyond the outer surface of the drainage tube 1. The multiple parts that extend beyond the outer surface of the drainage tube 1 will form positioning protrusions 12 respectively. The multiple positioning protrusions 12 squeeze the subcutaneous tissue for positioning.

[0032] By applying the method of this application, the first annular elastic airbag 21 and the second annular elastic airbag 22 can not only block the side hole 10 during the tube insertion process to prevent the fluid inside the pleural cavity from flowing out of the side hole 10 too early (which would interfere with the tube insertion), but also quickly and intuitively determine whether the last side hole 10 has been successfully inserted into the pleural cavity by reading the external air pressure detection unit 3. In addition, they are used to cooperate with multiple positioning holes 11 to form multiple flexible positioning protrusions 12 to assist in the positioning of the drainage tube 1. Moreover, the sliding sleeve 2 can also support the drainage tube 1 in the subcutaneous tissue part to prevent the drainage effect from being affected by the compression and deformation of this part. This achieves the technical effect of multiple uses in one device and can bring great convenience to the insertion operation of the drainage tube 1. At the same time, it also has the characteristics of simple structure, convenient operation and low cost, and is suitable for promotion and popularization.

[0033] Preferably, the sliding sleeve 2 includes a cylindrical sleeve 200 and two rings 201 located at both ends of the sleeve 200; the outer surface of the sleeve 200 is lower than the outer surface of the rings 201 to form an annular groove 20; the first annular elastic airbag 21 and the second annular elastic airbag 22 are respectively sleeved and fixed at both ends of the annular groove 20; the second air tube 23 passes through the lower ring 201 and communicates with the second annular elastic airbag 22; a multi-way valve 4 is provided at the tail end of the drainage tube 1, the second air tube 23 passes through a branch of the multi-way valve 4 and extends to the outside of the drainage tube 1, an end cap is provided on the branch of the multi-way valve 4, and a sealing sleeve 400 for the second air tube to pass through is provided on the end cap; the structure is simple, the cost is low, it is easy to assemble and produce, and it forms a disposable product; when in use, the second air tube 23 can be connected to the air pressure detection unit 3; when in use, the second air tube 23 can be manually pulled to overcome the resistance of the sealing sleeve 400, and the operation is very convenient and easy to learn.

[0034] Preferably, a third air tube 24 is provided at the tail end of the second air tube 23, and the third air tube 23 is connected to an air pressure regulating unit 5; during insertion and removal of the tube, the air pressure inside the first annular elastic airbag 21 and the second annular elastic airbag 22 can be adjusted by the air pressure regulating unit 5, and this component can be selected as needed.

[0035] Preferably, another branch of the multi-way valve 4 is used to connect to the water seal bottle; a sealing film 6 for sealing the skin incision is fitted on the drainage tube 1; this part can adopt the existing structure, which will not be described in detail.

[0036] Preferably, the drainage tube 1 is provided with a scale, with the front end of the drainage tube as the starting point of the scale; this part of the structure can be used in conjunction with imaging to confirm the specific depth, unifying the dual standard of "tip distance + last side hole threshold" and ensuring that the written record is consistent with the actual operation.

[0037] A method for calibrating the insertion depth of a closed chest drainage tube, using a closed chest drainage tube as described above, such as... Figure 3 As shown, the method includes the following steps:

[0038] S01: In the initial state, the first annular elastic airbag inflates and partially enters the side hole at the front end, with the part of the ingress extending beyond the outer surface of the drainage tube; the second annular elastic airbag inflates and partially enters the side hole at the tail end, with the part of the ingress extending beyond the outer surface of the drainage tube.

[0039] S02: During the insertion of the drainage tube, the air pressure of the whole consisting of the first annular elastic airbag and the second annular elastic airbag is monitored by the air pressure detection unit. When the drainage tube is inserted into the side hole at the tail end and also enters the thoracic cavity, the internal air pressure of the whole consisting of the first annular elastic airbag and the second annular elastic airbag will be maintained within a constant set air pressure range.

[0040] S03: Pull the second trachea to move the sliding sleeve outward until the first annular elastic airbag corresponds to multiple positioning holes. At this time, the second annular elastic airbag is squeezed by the inner wall of the drainage tube, causing some of the gas inside to enter the first annular elastic airbag. The first annular elastic airbag will partially enter the positioning hole and the part of the entry will extend beyond the outer surface of the drainage tube. Multiple parts that extend beyond the outer surface of the drainage tube will form positioning protrusions. Multiple positioning protrusions squeeze the subcutaneous tissue for positioning.

[0041] By applying the method of this application, the first and second annular elastic airbags can not only block the side holes during tube insertion to prevent premature outflow of intrathoracic fluid (which would interfere with tube insertion), but also quickly and intuitively determine whether the last side hole has been successfully inserted into the thoracic cavity by reading the external air pressure detection unit. In addition, they are used to cooperate with multiple positioning holes to form multiple flexible positioning protrusions to assist in the positioning of the drainage tube. Moreover, the sliding sleeve can also support the drainage tube in the subcutaneous tissue part to prevent the drainage effect from being affected by compression and deformation. This achieves a multi-purpose technical effect and can bring great convenience to the insertion of drainage tubes. At the same time, it also has the characteristics of simple structure, convenient operation and low cost, and is suitable for promotion and popularization.

[0042] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A closed chest drainage tube, comprising a drainage tube, wherein the front end of the drainage tube is provided with two non-opposite side holes spaced apart along its length, characterized in that, A sliding sleeve is provided inside the drainage tube. An annular groove is provided on the outer surface of the sliding sleeve, and a first annular elastic airbag and a second annular elastic airbag are provided within the annular groove. The first annular elastic airbag and the second annular elastic airbag are connected through a first air tube. In the initial state, the first annular elastic airbag inflates and partially enters the side hole at the front end, with the entered portion extending beyond the outer surface of the drainage tube. The second annular elastic airbag inflates and partially enters the side hole at the tail end, with the entered portion extending beyond the outer surface of the drainage tube. The drainage tube is provided with a plurality of annularly distributed positioning holes. A second air tube is connected to the sliding sleeve to pull it to move inside the drainage tube. One end of the second air tube is connected to the second annular elastic airbag, and the other end extends to the outside of the drainage tube and is connected to an air pressure detection unit.

2. The closed thoracic drainage tube according to claim 1, characterized in that, The sliding sleeve includes a cylindrical sleeve and two annular rings located at both ends of the sleeve; the outer surface of the sleeve is lower than the outer surface of the annular rings to form an annular groove; the first annular elastic airbag and the second annular elastic airbag are respectively sleeved and fixed at both ends of the annular groove.

3. The closed thoracic drainage tube according to claim 2, characterized in that, The second trachea passes through the lower end of the ring and communicates with the second annular elastic airbag; the tail end of the drainage tube is provided with a multi-way valve, and the second trachea passes through a branch of the multi-way valve and extends to the outside of the drainage tube.

4. The closed thoracic drainage tube according to claim 3, characterized in that, The branch pipe of the multi-way valve is provided with an end cap, and the end cap is provided with a sealing sleeve for the second air pipe to pass through.

5. The closed thoracic drainage tube according to claim 3, characterized in that, A third air tube is provided at the tail end of the second air tube, and the third air tube is connected to an air pressure regulating unit; during insertion and removal of the tube, the air pressure inside the first and second annular elastic airbags can be adjusted by the air pressure regulating unit.

6. The closed thoracic drainage tube according to claim 3, characterized in that, The other branch of the multi-way valve is used to connect to the water seal bottle.

7. The closed thoracic drainage tube according to claim 1, characterized in that, The drainage tube is provided with a scale, with the front end of the drainage tube as the starting point of the scale.

8. The closed thoracic drainage tube according to claim 1, characterized in that, The drainage tube is fitted with a sealing film to cover the skin incision.

9. A method for calibrating the insertion depth of a closed chest drainage tube, using the closed chest drainage tube as described in any one of claims 1-8, characterized in that... The method includes the following steps: In the initial state, the first annular elastic airbag inflates and partially enters the side hole at the front end, with the part of the airbag extending beyond the outer surface of the drainage tube; the second annular elastic airbag inflates and partially enters the side hole at the tail end, with the part of the airbag extending beyond the outer surface of the drainage tube. During the insertion of the drainage tube, the air pressure of the whole consisting of the first and second annular elastic airbags is monitored by the air pressure detection unit. When the drainage tube is inserted into the side hole at the tail end and enters the thoracic cavity, the internal air pressure of the whole consisting of the first and second annular elastic airbags will be maintained within a constant set air pressure range. Pulling the second trachea causes the sliding sleeve to move outward until the first annular elastic airbag aligns with multiple positioning holes. At this time, the second annular elastic airbag is squeezed by the inner wall of the drainage tube, causing some of the gas inside to enter the first annular elastic airbag. The first annular elastic airbag will partially enter the positioning holes, and the part that enters extends beyond the outer surface of the drainage tube. Multiple parts that extend beyond the outer surface of the drainage tube form positioning protrusions, which compress the subcutaneous tissue for positioning.

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