Painless leakage-proof whole-course drainage tube

Abstract

The invention discloses a painless leakage-proof whole-course drainage tube, and belongs to the technical field of medical instruments, the painless leakage-proof whole-course drainage tube comprises a hose, a spiral drainage part is arranged on one side of the hose, an in-vitro balloon and an in-vivo balloon are arranged on the outer side of the hose, and the in-vivo balloon is arranged on the side close to the spiral drainage part; a working medium inner supplementing pipe communicated with the in-vitro balloon and the in-vivo balloon is arranged in the hose, and a working medium outer supplementing pipe communicated with the working medium inner supplementing pipe is arranged outside the hose. The two communicated balloons are arranged inside and outside the tissue respectively to fix the drainage tube, so that the pain problem and the falling risk caused by conventional suture fixation can be solved; the drainage part at the end part of the drainage tube is of a spiral structure with a connecting band, so that the risk of compression injury and displacement of the drainage tube is reduced, and the whole-course drainage effect can be achieved; a control tower structure end and a traction tube are arranged, or a supporting rod and a tearable sheath tube kit are arranged, and the problem that a drainage tube is difficult to place due to the fact that an air / liquid inflation structure exists outside a novel drainage tube body is solved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a painless, leak-proof, full-course drainage tube. Background Art

[0002] Drainage tubes are routine surgical and interventional treatment materials, widely used in various surgeries to drain fluid from cavities. Drainage tubes are left in the body for varying lengths of time, ranging from a few hours to months or even years. Currently, drainage tubes are mainly made of rubber, silicone, and PVC. In general, drainage tubes are divided into two categories: passive drainage and active drainage. Passive drainage tubes are mainly made of rubber, and the most widely used active drainage tube is the Blake drainage tube.

[0003] The above-mentioned drainage tubes commonly used in clinical practice need to be fixed with sutures, which have problems such as affecting the patient's quality of life (pain), easy slippage, easy side leakage, limited drainage area, and poor compliance of hard drainage tubes leading to postoperative drainage tube displacement and compression injury. These problems are particularly prominent in patients who need long-term indwelling drainage tubes. In severe cases, these problems can even cause serious surgical complications or even lead to the death of patients. Dealing with these problems increases the pain of patients and occupies a large amount of medical resources. Summary of the invention

[0004] The purpose of the present invention is to provide a painless and leak-proof drainage tube for full-course drainage, so as to solve the problems that the currently commonly used drainage tubes need to be fixed with sutures, affect the patient's quality of life (pain), are easy to slip off, are easy to leak sideways, have a limited drainage area, and hard drainage tubes have poor compliance, leading to postoperative displacement of the drainage tube and compression injury.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The present invention provides a drainage tube for painless, leak-proof and full-course drainage, comprising a hose, a spiral drainage portion being arranged on one side of the hose, an extracorporeal balloon and an intracorporeal balloon being arranged on the outside of the hose, and the intracorporeal balloon being arranged on the side close to the spiral drainage portion, an internal working fluid replenishment tube being arranged inside the hose and communicating with the extracorporeal balloon and the intracorporeal balloon, and an external working fluid replenishment tube being arranged outside the hose and communicating with the internal working fluid replenishment tube.

[0007] Furthermore, the distance between the extracorporeal balloon and the intracorporeal balloon is set to be 1.5 to 2 cm.

[0008] Furthermore, the spiral drainage portion includes a plurality of spiral bodies.

[0009] Furthermore, the ratio of the width of the drainage groove formed between two adjacent spirals to the width of the non-drainage groove portion is a:b=3:1-5:1.

[0010] Furthermore, a connecting belt is provided between two adjacent spirals.

[0011] Furthermore, reinforcing wires are arranged between the plurality of spiral bodies.

[0012] Furthermore, a tower portion is provided at the head end of the spiral drainage portion.

[0013] Furthermore, it also includes a guide tube, one end of which is set as a closed structure, a clamping part is set on the outside of the closed structure, and a connecting part matching the tower part is set in the pipe opening at the other end of the guide tube.

[0014] Furthermore, it also includes a support rod and a tearable sheath, wherein the support rod is arranged inside the hose and the spiral drainage part, and the tearable sheath is arranged outside the spiral drainage part.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are:

[0016] The present invention adopts two semi-compliant balloons which are respectively arranged inside and outside the tissue to fix the setting position of the drainage tube, and the two balloons are connected; this innovative structure can solve the following problems: a) the design of the connected balloons can observe the inflation / liquid state in the double balloons through the balloon outside the body, so as to avoid accidental falling off caused by balloon leakage / liquid; b) the semi-compliant balloon can solve the problem of uneven inflation / liquid of the connected compliant balloon and the problem of patient discomfort caused by the non-compliant balloon; c) the double balloon fixation can solve the pain problem and the risk of falling off caused by conventional suture fixation; d) the double balloons can well isolate the inside and outside of the body cavity, so as to avoid leakage around the drainage tube; e) the good isolation of the double balloons to the inside and outside of the body cavity lays the foundation for full-course drainage.

[0017] The drainage portion at the end of the drainage tube of the present invention is a spiral structure with a connecting belt, and the structure extends to the balloon in the body; this innovative structure can solve the following problems: a) Compared with the cross drainage groove structure of the most commonly used Blake drainage tube, the drainage efficiency of this structure is not inferior to that of the Blake drainage tube, and the radial supporting force is sufficient to support negative pressure suction. At the same time, the axial compliance is significantly better than that of the Blake drainage tube, which significantly reduces the risk of compression injury and drainage tube displacement; b) Due to the isolation effect of the balloon structure, the drainage portion is distributed to the balloon, which can achieve the effect of full-length drainage, solving the problem that the existing drainage tube cannot drain the entire length.

[0018] The present invention has two installation structures, one is to set a tower structure end and a traction tube; the other is to set a support rod and a tearable sheath kit. When this solution is used, the head end of the spiral drainage part is not provided with a tower part; this structure solves the problem that the new drainage tube has an inflation / liquid structure outside the body and the drainage tube is difficult to place; the tower structure and the traction end can make the placement of the new drainage tube basically similar to the existing traditional drainage tube, and the support rod and the tearable sheath scheme designs a new drainage tube placement method, which draws on the structure of the jejunal nutrition tube placement device and is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic structural diagram of the drainage tube for painless and leak-proof full-course drainage of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the width of the drainage groove and the width of the non-drainage groove of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the spiral drainage portion when the angle is 240°;

[0023] Figure 4 This is a schematic diagram of the structure of the spiral drainage part when the angle is 360°;

[0024] Figure 5 This is a schematic diagram of the structure of the present invention using reinforcing wires for reinforcement;

[0025] Figure 6 It is a front view of the guide tube of the present invention;

[0026] Figure 7 for Figure 6 Sectional view in the AA direction;

[0027] Figure 8 This is a structural schematic diagram of the guide tube of the present invention in an installed state;

[0028] Fig. 9 It is a structural schematic diagram of the support rod and tearable sheath tube of the present invention in the installed state;

[0029] Fig.10 This is a schematic diagram of the structure of the guide tube of the present invention being placed into a body cavity;

[0030] Fig.11 This is a schematic diagram of the structure in which the open end of the guide tube of the present invention is pulled out of the body through a hole in the body wall where the drainage tube is pre-placed, and the closed end is kept in the body cavity;

[0031] Fig.12 It is a structural schematic diagram of the connection state of the drainage tube and the guide tube of the present invention;

[0032] Fig.13 It is a schematic diagram of the structure when the guide tube and the intracorporeal balloon of the present invention are located in the body cavity and the extracorporeal balloon is located outside the body cavity;

[0033] Fig.14 Schematic diagram of the structure of the in-vivo balloon and the in-vitro balloon after inflation / liquidation of the present invention; (the guide tube is located in the body cavity)

[0034] Fig.15 It is a structural schematic diagram of the cut-off position of the guide tube and the redundant drainage tube connected thereto of the present invention;

[0035] Fig.16 It is a schematic diagram of the structure of the support rod and the tearable sheath of the present invention delivering the drainage tube part into the body cavity;

[0036] Fig.17 It is a schematic diagram of the structure of retracting the tearable sheath tube and tearing the tearable sheath tube of the present invention;

[0037] Fig.18 This is a schematic diagram of the structure of the support rod withdrawal of the present invention;

[0038] Fig.19 It is a schematic diagram of the structure when the in-vivo balloon of the present invention is located in the body cavity and the in-vitro balloon is located outside the body cavity;

[0039] Fig. 20 It is a schematic diagram of the structure of the in-vivo balloon and the in-vitro balloon after being inflated with gas / liquid;

[0040] Fig.21 It is a structural schematic diagram of the cut-off position of the redundant drainage tube of the present invention.

[0041] Explanation of the accompanying drawings: 1. Hose; 2. Spiral drainage part; 2-1. Helix; 2-2. Connecting belt; 3. Extracorporeal balloon; 4. Intracorporeal balloon; 5. External working fluid supply tube; 6. Internal working fluid supply tube; 7. Tower part; 8. Reinforcing wire; 9. Guide tube; 9-1. Connecting part; 9-2. Clamping part; 10. Support rod; 11. Tearable sheath. DETAILED DESCRIPTION

[0042] like Figure 1-21As shown in the figure, a drainage tube for painless and leak-proof whole-course drainage includes a flexible tube 1. One side of the flexible tube 1 is connected to a spiral drainage part 2. An external balloon 3 and an internal balloon 4 are fixedly wrapped outside the flexible tube 1, and the internal balloon 4 is arranged on the side close to the spiral drainage part 2. The spiral drainage part 2 extends to the position of the internal balloon 4. Combining the isolation between the body cavity inside and outside caused by the compression of the abdominal wall by the balloon, the effect of whole-course draining body fluid can be achieved. The distance between the external balloon 3 and the internal balloon 4 is set to 1.5 - 2 cm. An internal working medium replenishing tube 6 communicating with the external balloon 3 and the internal balloon 4 is arranged inside the flexible tube 1, and an external working medium replenishing tube 5 communicating with the internal working medium replenishing tube 6 is arranged outside the flexible tube 1. When the drainage tube is inserted into the abdominal cavity, the internal balloon 4 and the external balloon 3 are respectively located inside and outside the abdominal wall to fix the position of the drainage tube. The internal working medium replenishing tube 6 is an air / liquid inlet conduit, and the air / liquid inlet conduit is communicated with both the external balloon 3 and the internal balloon 4. When the drainage tube is placed in the body wall between the two balloons, the balloons are inflated / liquefied through the air / liquid inlet conduit. Finally, the double balloons will be in a dumbbell shape to clamp the body wall, thus solving the problems of anti-slip, anti-disconnection and anti-leakage. At the same time, because the external balloon is communicated with the internal balloon, the inflation / liquefaction state inside the double balloons can be observed through the external balloon, avoiding accidental detachment caused by air / liquid leakage of the balloons.

[0043] The internal section of the drainage tube adopts the spiral drainage part 2, and the drainage grooves extend to near the internal balloon 4; the spiral drainage part structure endows the drainage tube with high axial compliance, thereby reducing the risk of tissue damage caused by poor compliance of the drainage tube; at the same time, high radial supporting force is obtained, thereby avoiding the risk that the drainage tube collapses and cannot drain when negative pressure is applied.

[0044] Specifically, the whole drainage tube is of a soft structure. The flexible tube 1 and the spiral drainage part 2 are made of medical silicone, or can also be made of medical materials such as PVC. The internal balloon 4 and the external balloon 3 are semi-compliant balloons made of PVC material. In some embodiments, they can also be semi-compliant balloons made of materials such as PEBAX, or compliant balloons made of materials such as silicone.

[0045] The spiral drainage part 2 includes a plurality of spirals 2-1. The ratio of the width of the drainage groove formed between two adjacent spirals 2-1 to the width of the non-drainage groove part is preferably a:b = 3:1 - 5:1. In some embodiments, other ratios can also be used. The cross-section of the spiral drainage part 2 is preferably trapezoidal, so that the width of the drainage groove outside the drainage tube is smaller than that inside the drainage tube (b < c). In this structure, it is more difficult for body tissues to embed in the drainage tube, and when embedding occurs, it is easier to make the drainage tube unblock again by flushing the drainage tube. The cross-section can also be other shapes such as parallelogram or triangle; as Figure 2 As shown in the figure, when the cross-section is a parallelogram, the widths of the drainage grooves inside and outside the drainage tube are equal.

[0046] A connecting belt 2-2 is provided between two adjacent spiral bodies 2-1. Figure 3 , 4 As shown, the spiral bodies 2-1 are not completely separated, thereby forming a connecting band structure, so as to enhance the axial tensile resistance and structural stability of the drainage tube. The spiral drainage part 2 can be formed by laser cutting, and the connecting band 2-2 can be formed together with the spiral drainage part during cutting. Specifically, as Figure 3 As shown in the figure, a typical structure is that a connecting belt is provided for every 240° rotation of the spiral, so that a connecting belt is distributed every 2 spirals at the cross-sectional angles of 0°, 120°, and 240° of the drainage tube. In some embodiments, the distribution of connecting belts between different spirals can also be an angle other than 240°, such as 180°, 270°, 360°, etc. Figure 4 As shown, one connection belt 2 - 2 is provided every 360°, and the connection belts 2 - 2 are distributed on the same straight line in the axial direction.

[0047] Other mechanisms can also be arranged at the position of the spiral drainage portion 2 to reinforce the axial stability of the spiral drainage portion 2; for example, Figure 5 As shown, reinforcing wires 8 are provided between the plurality of spiral bodies 2 - 1 , and reinforcement is performed by providing reinforcing wires.

[0048] The spiral drainage portion 2 may not be provided with a connecting belt and a reinforcing mechanism, and the structural stability may be ensured only by the spiral structure of the silicone material.

[0049] The head end of the spiral drainage part 2 is provided with a tower part 7 for installing a guide tube 9 so as to guide the drainage tube into the body when the drainage tube is placed.

[0050] like Figure 6 , 7 As shown, one end of the guide tube 9 is set as a closed structure, and the outer side of the closed structure is provided with a recess as a clamping portion 9-2 to facilitate the clamping of surgical instruments. The other end of the guide tube 9 is provided with a connecting portion 9-1 matching the tower portion 7 in the tube opening, and the connecting portion 9-1 is an inverted tower structure, such as Figure 8 As shown, the tower part 7 can be fixed after being inserted into the connecting part 9-1; specifically, the guide tube 9 is a hose as a whole, and the hose is made of medical silicone, and can also be made of medical materials such as PVC.

[0051] The specific usage is as follows:

[0052] Step 1: insert the guide tube 9 into the body cavity. Fig.10 As shown; the open end of the guide tube 9 is pulled out of the body through the perforation of the body wall where the drainage tube is pre-placed by a surgical instrument, and the closed end is kept in the body cavity, as shown Fig.11 As shown;

[0053] Step 2: insert the tower part 7 into the guide tube 9 and fix it with the connecting part 9-1. Fig.12 As shown;

[0054] Step 3: Use a surgical instrument to pull the clamping part 9-2 to pull the drainage tube 8 into the body cavity, so that the internal balloon 4 is located in the body cavity and the external balloon 3 is located outside the body cavity. Fig.13 As shown;

[0055] Step 4: Inflate the inner working fluid supply tube 6 with gas / liquid through the outer working fluid supply tube 5, so that the outer balloon 3 and the inner balloon 4 are in a dumbbell shape and clamp the body wall, thus completing the fixation of the drainage tube. Fig.14 As shown;

[0056] Step 5: Assess the remaining length of the drainage tube in the body and cut the drainage tube at the reserved length. Fig.15 As shown, the guide tube 9 and the redundant drainage tubes connected thereto are pulled out of the body.

[0057] like Fig. 9 As shown, a support rod 10 and a tearable sheath 11 can also be provided to guide the drainage tube into the body. When this solution is used, the head end of the spiral drainage part is not provided with a tower part. The support rod 10 is provided inside the hose 1 and the spiral drainage part 2, and the tearable sheath 11 is provided outside the spiral drainage part 2. By inserting the support rod 10 and sleeved with the tearable sheath 11 on the spiral drainage part 2, the spiral drainage part 2 at the front end of the drainage tube can be conveniently guided into the body. When the tearable sheath 11 partially enters the body, the spiral drainage part 2 can be ensured to enter the body, and then the tearable sheath 11 can be torn off and pulled out, and the support rod 102 can be pulled out of the drainage tube, so that the spiral drainage part can be at least partially guided into the body, and then the spiral drainage part of the drainage tube can be clamped by the clamping tool in the body, and then the drainage part can be pulled into the body.

[0058] The specific usage is as follows:

[0059] Step 1: Push the support rod 10, the drainage tube and the tearable sheath 11 to deliver the drainage tube part into the body cavity. Fig.16 As shown;

[0060] Step 2: retract the tearable sheath tube 11, tear the tearable sheath tube 11, and withdraw the support rod 10. Fig.17 , 18 As shown;

[0061] Step 3: Use surgical instruments to pull the drainage tube until the internal balloon 4 is located inside the body cavity and the external balloon 3 is located outside the body cavity. Fig.19 shown.

[0062] Step 4: Inflate the inner working fluid supply tube 6 with gas / liquid through the outer working fluid supply tube 5, so that the outer balloon 3 and the inner balloon 4 can clamp the body wall, thus completing the fixation of the drainage tube. Fig. 20 As shown;

[0063] Step 5: Assess the remaining length of the drainage tube in the body, cut the drainage tube at the reserved length, and pull the excess drainage tube out of the body. Fig.21 shown.

[0064] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A painless and leak-proof drainage tube for full-course drainage, characterized in that: The invention comprises a hose (1), wherein a spiral drainage portion (2) is arranged on one side of the hose (1), an extracorporeal balloon (3) and an intracorporeal balloon (4) are arranged on the outside of the hose (1), and the intracorporeal balloon (4) is arranged on the side close to the spiral drainage portion (2), an internal working fluid replenishment tube (6) connected to the extracorporeal balloon (3) and the intracorporeal balloon (4) is arranged inside the hose (1), and an external working fluid replenishment tube (5) connected to the internal working fluid replenishment tube (6) is arranged outside the hose (1).

2. The painless and leak-proof drainage tube for full-course drainage according to claim 1, characterized in that: The distance between the extracorporeal balloon (3) and the intracorporeal balloon (4) is set to be 1.5 to 2 cm.

3. The painless and leak-proof drainage tube for full-course drainage according to claim 1, characterized in that: The spiral drainage portion (2) comprises a plurality of spiral bodies (2-1).

4. The painless and leak-proof drainage tube for full-course drainage according to claim 3, characterized in that: The ratio of the width of the drainage groove formed between two adjacent spiral bodies (2-1) to the width of the non-drainage groove part is a:b=3:1-5:

1.

5. The painless and leak-proof drainage tube for full-course drainage according to claim 4, characterized in that: A connecting belt (2-2) is provided between two adjacent spiral bodies (2-1).

6. The painless and leak-proof drainage tube for full-course drainage according to claim 4, characterized in that: A reinforcing wire (8) is provided through and between the plurality of spiral bodies (2-1).

7. The painless and leak-proof drainage tube for full-course drainage according to claim 1, characterized in that: A tower portion (7) is provided at the head end of the spiral drainage portion (2).

8. The painless and leak-proof drainage tube for full-course drainage according to claim 7, characterized in that: It also comprises a guide tube (9), one end of which is arranged as a closed structure, a clamping portion (9-2) is arranged on the outside of the closed structure, and a connecting portion (9-1) matching the tower portion (7) is arranged in the pipe opening at the other end of the guide tube (9).

9. The painless and leak-proof drainage tube for full-course drainage according to claim 1, characterized in that: It also comprises a support rod (10) and a tearable sheath (11), wherein the support rod (10) is arranged inside the hose (1) and the spiral drainage portion (2), and the tearable sheath (11) is arranged outside the spiral drainage portion (2).

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