Medical leakage-proof drainage device

Abstract

The utility model discloses a medical leakage-proof drainage device which comprises a drainage tube, a soft sleeve and a bonding repairing assembly. The drainage tube is connected with the first end of the soft sleeve, and the second end of the soft sleeve is used for being inserted into a notch of an intracranial dura mater; the bonding and repairing assembly is arranged in the flexible sleeve, the bonding and repairing assembly comprises a bonding part, a covering film and a first lead, the bonding part is arranged on the inner wall of the flexible sleeve, the covering film is arranged on the bonding part, the first end of the first lead is connected with the covering film, and the second end of the first lead extends out of the drainage tube. According to the utility model, pus, blood and liquid accumulated between human tissues or in a body cavity are guided out of the body through the drainage tube and the soft sleeve, so that postoperative infection is prevented, and wound healing is promoted; and the interior of the soft sleeve is bonded through the bonding part, so that a notch of an intracranial dura mater is sealed by the soft sleeve, the problem of leakage of cerebrospinal fluid is avoided, and the difficulty of wound healing and the risk of complications such as infection are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more specifically, to a medical anti-leakage drainage device. Background Art

[0002] In neurosurgery, many cranial surgeries require the placement of drainage tubes to drain bleeding and fluid from the surgical area. The intracranial end of the subdural drainage tube, such as the intraventricular or tumor cavity, is placed under the dura mater and must pass through the dura mater and then through the scalp to drain the drainage fluid out of the body. After the drainage tube is removed, there will inevitably be a certain defect in the dura mater. Cerebrospinal fluid may flow outside the dura mater through this defect. If extradural cerebrospinal fluid accumulates, it may form a wound effusion, affecting wound healing and even causing retrograde infection. Severe cases can cause central nervous system infection and even be life-threatening.

[0003] In order to reduce this cerebrospinal fluid leakage, two measures are often taken. The first measure is to sneak the drainage tube from the normal scalp for a distance and then lead it out through another puncture hole to avoid the drainage tube affecting wound healing. However, this measure can only reduce the impact of the drainage tube itself on the incision, and cannot eliminate the risk of cerebrospinal fluid leaking to the epidural. The second measure is to eliminate the subcutaneous dead space and promote wound healing by applying pressure bandage. However, this pressure bandage method can only eliminate the cavity between the skull and the scalp. Due to the obstruction of the skull, the cavity between the skull and the dura mater is difficult to eliminate in this way. Although it is expected to eliminate subcutaneous fluid accumulation, it is very likely to form epidural fluid accumulation.

[0004] The ideal approach would be to close the dural breach left by the indwelling drainage tube. However, existing methods cannot eliminate this breach quickly, requiring the wound to gradually heal by itself. This, however, takes a long time, and due to the influence of cerebrospinal fluid, healing is even slower, and cerebrospinal fluid leakage may still occur in the short term. This increases the difficulty of wound healing and the risk of complications such as infection.

[0005] Therefore, how to provide a medical leakage-proof drainage device has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0006] One purpose of the utility model is to provide a new technical solution for a medical anti-leakage drainage device.

[0007] According to a first aspect of the present invention, a medical anti-leakage drainage device is provided, comprising: a drainage tube, a soft cannula, and an adhesive repair component; the drainage tube is connected to a first end of the soft cannula, and the second end of the soft cannula is used to be inserted into a notch in the intracranial dura mater;

[0008] The adhesive repair component is arranged on the inside of the soft sleeve and is used to make the inner walls of the soft sleeve adhere to each other. The adhesive repair component includes an adhesive portion, a covering film and a first lead. The adhesive portion is arranged on the inner wall of the soft sleeve, and the covering film is arranged on the adhesive portion. The first end of the first lead is connected to the covering film, and the second end of the first lead extends out of the drainage tube.

[0009] Optionally, the inner diameter of the soft sleeve is larger than the outer diameter of the drainage tube.

[0010] Optionally, the soft sleeve is made of degradable polylactic acid or polyglycolic acid.

[0011] Optionally, the bonding portion is an adhesive layer, and the adhesive layer is attached to the inner wall of the soft sleeve.

[0012] Optionally, the bonding portion includes a first storage cavity, a second storage cavity and an isolation layer, the first storage cavity and the second storage cavity are both arranged on the inner wall of the soft sleeve and are respectively located at the two ends of the soft sleeve, the isolation layer is arranged between the first storage cavity and the second storage cavity, the isolation layer is arranged on the first storage cavity and the second storage cavity, component A is arranged in the first storage cavity, component B is arranged in the second storage cavity, and the component A and the component B are mixed to form a hydrogel.

[0013] Optionally, the adhesive repair component further includes a second lead, a first end of the second lead is connected to the isolation layer, and a second end of the second lead extends out of the drainage tube.

[0014] Optionally, the component A is a dry powder consisting of four-arm polyethylene glycol-N-hydroxysuccinimide-glutarate, a dye Brilliant Blue 85 and an antioxidant butylated hydroxytoluene, and the component B is composed of an acidic phosphate buffer solution and an alkaline sodium tetraborate buffer solution of trilysine and polyethyleneimine.

[0015] Optionally, the isolation layer is radially extending, and there are multiple isolation layers, and the multiple isolation layers are evenly spaced along the axial direction of the flexible sleeve;

[0016] A plurality of axially extending separation zones are provided in the first storage cavity and the second storage cavity, and the plurality of separation zones are evenly spaced along the radial direction of the flexible sleeve.

[0017] The beneficial effects of the present invention are:

[0018] The utility model comprises a drainage tube connected to a first end of a soft cannula, a second end of the soft cannula being inserted into a notch in the intracranial dura mater, an adhesive portion being provided on the inner wall of the soft cannula, a covering film being provided on the adhesive portion, a first end of a first lead being connected to the covering film, and a second end of the first lead being extended outside the drainage tube. During use, an operator first sutures the soft cannula to the dura mater and / or artificial dura mater, then inserts the drainage tube into the soft cannula, and through the drainage tube and the soft cannula, pus, blood, and fluid accumulated between human tissues or in the body cavity are guided out of the body, thereby preventing postoperative infection and promoting wound healing. When drainage is no longer needed after surgery, the operator removes the drainage tube and the covering film through the first lead, then applies pressure dressing to the wound to press the soft cannula closed, and the adhesive portion adheres to the inside of the soft cannula, so that the notch in the intracranial dura mater is sealed by the soft cannula, thereby avoiding the problem of cerebrospinal fluid leakage, reducing the difficulty of wound healing and the risk of complications such as infection.

[0019] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0021] Figure 1 This is a structural diagram of the medical anti-leakage drainage device of the present utility model;

[0022] Figure 2 This is a structural diagram of a first embodiment of a medical anti-leakage drainage device of the present utility model;

[0023] Figure 3 This is a structural diagram of Example 2 of the medical anti-leakage drainage device of the present utility model;

[0024] Figure 4 This is a structural diagram of Example 3 of the medical anti-leakage drainage device of the present utility model.

[0025] The following are marked in the figure: 1. Drainage tube; 2. Flexible sleeve; 3. Adhesive repair component; 31. Adhesive part; 311. Adhesive layer; 312. First storage cavity; 313. Second storage cavity; 314. Isolation layer; 315. Separation tape; 32. Covering film; 33. First lead; 34. Second lead. DETAILED DESCRIPTION

[0026] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0027] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0028] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0029] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0030] like Figures 1 to 4 As shown, an embodiment of the present invention provides a medical leakage-proof drainage device, comprising: a drainage tube 1, a flexible sleeve 2, and an adhesive repair assembly 3; the drainage tube 1 is connected to the first end of the flexible sleeve 2, and the second end of the flexible sleeve 2 is used to be inserted into the gap in the intracranial dura mater. The drainage tube 1 and the flexible sleeve 2 are used to guide pus, blood, and fluid accumulated between human tissues or in body cavities to the outside of the body, thereby preventing postoperative infection and promoting wound healing. The flexible sleeve 2 can deform to adapt to the curved state of the drainage tube 1 from under the bone flap, through the bone edge, to under the scalp.

[0031] The adhesive repair component 3 is arranged on the inside of the soft sleeve 2 to make the inner walls of the soft sleeve 2 adhere to each other. The adhesive repair component 3 includes an adhesive portion 31, a covering film 32 and a first lead 33. The adhesive portion 31 is arranged on the inner wall of the soft sleeve 2, and the covering film 32 is arranged on the adhesive portion 31. The first end of the first lead 33 is connected to the covering film 32, and the second end of the first lead 33 extends out of the drainage tube 1.

[0032] Specifically, the second end of the flexible cannula 2 is first sutured to the dura mater and / or artificial dura mater at the intended placement of the drainage tube 1. The tube 1 is then positioned appropriately, and inserted into the flexible cannula 2. The flexible cannula 2 is then trimmed to the desired exit location, positioning the first end of the flexible cannula 2 near the mid-scalp section where the drainage tube 1 will travel through the bone window. The drainage tube 1 and the flexible cannula 2 are then advanced through the incision edge of the scalp, away from the incision. The drainage tube 1 is then advanced through the scalp through a separate puncture point, while the flexible cannula 2 remains beneath the scalp.

[0033] During use, the operator first sutures the soft cannula 2 to the dura mater and / or artificial dura mater, and then inserts the drainage tube 1 into the soft cannula 2. The pus, blood, and liquid accumulated between human tissues or in the body cavity are guided out of the body through the drainage tube 1 and the soft cannula 2 to prevent postoperative infection and promote wound healing.

[0034] When drainage is no longer needed after the operation, the operator removes the drainage tube 1 and the covering film 32 through the first lead 33, then applies pressure to the wound to press the soft sleeve 2 closed, and the adhesive part 31 bonds the inside of the soft sleeve 2 so that the gap in the intracranial dura mater is sealed by the soft sleeve 2.

[0035] It should be noted that, because the second end of the flexible cannula 2 is positioned under the scalp, the deep portion of the scalp has normal skull, and the wound is subjected to pressure dressing so that the flexible cannula 2 can be pressed closed, thereby avoiding cerebrospinal fluid leakage. Cerebrospinal fluid is only present in the flexible cannula 2 between the dura mater or the artificial dura mater breach and the bone edge, and lacks obvious fluidity, is a static state. Because the inner wall of the dura mater or the artificial dura mater is pressed closed after lamination, adhesion can be formed, so even if no longer subjected to pressure dressing in the later stage, cerebrospinal fluid leakage will not be arranged. And along with the repair growth of tissue in the subcutaneous tunnel, also can form physiological compression and blocking to the flexible cannula 2 in the later stage, further strengthen the anti-leakage function.

[0036] The utility model connects the drainage tube 1 with the first end of the soft sleeve 2, and the second end of the soft sleeve 2 is used to be inserted into the gap of the intracranial dura mater; the adhesive portion 31 is provided on the inner wall of the soft sleeve 2, and the covering film 32 is provided on the adhesive portion 31, the first end of the first lead 33 is connected to the covering film 32, and the second end of the first lead 33 extends out of the drainage tube 1. During use, the operator first sutures the soft cannula 2 on the dura mater and / or artificial dura mater, and then inserts the drainage tube 1 into the soft cannula 2. The pus, blood, and liquid accumulated between human tissues or in the body cavity are guided to the outside of the body through the drainage tube 1 and the soft cannula 2 to prevent postoperative infection and promote wound healing. When drainage is no longer needed after the operation, the operator removes the drainage tube 1 and removes the covering film 32 through the first lead 33. Then, the wound is pressurized and bandaged to press the soft cannula 2 closed. The adhesive part 31 is bonded to the inside of the soft cannula 2, so that the gap in the intracranial dura mater is sealed by the soft cannula 2, avoiding the problem of cerebrospinal fluid leakage, and reducing the difficulty of wound healing and the risk of complications such as infection.

[0037] In one embodiment of the medical anti-leakage drainage device of the present utility model, as Figures 1 to 4 As shown, the inner diameter of the soft sleeve 2 is larger than the outer diameter of the drainage tube 1 . This arrangement enables the drainage tube 1 to be smoothly inserted into the soft sleeve 2 .

[0038] In one embodiment of the medical anti-leakage drainage device of the present invention, the soft sleeve 2 is made of degradable polylactic acid or polyglycolic acid.

[0039] Specifically, after the wound has completely healed, the soft sleeve 2 can be gradually absorbed and degraded, and replaced by autologous tissue. During the process of the soft sleeve 2 being absorbed and degraded and replaced by autologous tissue, the gap in the dura mater or artificial dura mater will also be gradually blocked by autologous tissue, further preventing the occurrence of cerebrospinal fluid leakage.

[0040] In one embodiment of the medical anti-leakage drainage device of the present utility model, as Figure 2 As shown, the bonding portion 31 is an adhesive layer 311 , and the adhesive layer 311 is attached to the inner wall of the soft sleeve 2 .

[0041] In this embodiment, the bonding portion 31 is an adhesive layer 311 , which is directly bonded to the inner wall of the soft cannula 2 via the adhesive layer 311 , so that the gap in the intracranial dura mater is sealed by the soft cannula 2 , thereby avoiding the problem of cerebrospinal fluid leakage.

[0042] In one embodiment of the medical anti-leakage drainage device of the present utility model, as Figure 3 As shown, the bonding portion 31 includes a first storage cavity 312, a second storage cavity 313 and an isolation layer 314. The first storage cavity 312 and the second storage cavity 313 are both arranged on the inner wall of the soft sleeve 2 and are respectively located at the two ends of the soft sleeve 2. The isolation layer 314 is arranged between the first storage cavity 312 and the second storage cavity 313. The isolation layer 314 is arranged on the first storage cavity 312 and the second storage cavity 313. Component A is arranged in the first storage cavity 312, and component B is arranged in the second storage cavity 313. Component A and component B are mixed to form a hydrogel.

[0043] In this embodiment, when drainage is no longer needed after surgery, the operator first opens the isolation layer 314 to connect the first storage chamber 312 and the second storage chamber 313, thereby allowing component A and component B to mix to form a hydrogel. The wound is then pressurized and bandaged to close the soft sleeve 2. The hydrogel formed by the mixture of component A and component B is bonded to the inside of the soft sleeve 2, so that the gap in the intracranial dura mater is sealed by the soft sleeve 2.

[0044] In one embodiment of the medical anti-leakage drainage device of the present utility model, as Figure 3 As shown, the adhesive repair component 3 further includes a second lead 34 , a first end of the second lead 34 is connected to the isolation layer 314 , and a second end of the second lead 34 extends out of the drainage tube 1 .

[0045] In the present invention, the first end of the second lead 34 is connected to the isolation layer 314 , and the second end of the second lead 34 extends out of the drainage tube 1 . The isolation layer 314 is opened by the second lead 34 , thereby allowing component A and component B to be fully mixed.

[0046] In one embodiment of the medical leakage-proof drainage device of the present invention, component A is a dry powder consisting of four-arm polyethylene glycol-N-hydroxysuccinimide-glutarate (4-arm-PEG-SG), a dye Brilliant Blue 85, and an antioxidant butylated hydroxytoluene (BHT), and component B is composed of an acidic phosphate buffer solution and an alkaline sodium tetraborate buffer solution of trilysine (Tri-lys) and polyethyleneimine (PEI).

[0047] Specifically, 4-arm-PEG-SG, Tri-lysine, and PEI undergo a nucleophilic substitution reaction when mixed, forming a cross-linked macromolecule bound by amide bonds, known as a hydrogel. The hydrogel's adhesive properties stem from the forces of amide cross-linking between the hydrogel's internal molecules and the modified polyethylene glycol's binding to amino groups of tissue proteins at the site of application. Furthermore, the hydrogel is gradually absorbed and degraded by the flexible sleeve 2, allowing it to be replaced by autologous tissue.

[0048] In one embodiment of the medical anti-leakage drainage device of the present utility model, as Figure 4 As shown, the isolation layer 314 is radially extending, and there are multiple isolation layers 314 , which are evenly spaced apart along the axial direction of the soft sleeve 2 .

[0049] A plurality of axially extending separation strips 315 are provided in the first storage cavity 312 and the second storage cavity 313 . The plurality of separation strips 315 are evenly spaced along the radial direction of the flexible sleeve 2 .

[0050] In this embodiment, the first storage chamber 312 and the second storage chamber 313 are provided in plurality, and the first storage chamber 312 and the second storage chamber 313 are spaced apart from each other. An isolation layer 314 is disposed between the first storage chamber 312 and the second storage chamber 313. The isolation layer 314 and the separation strip 315 divide the first storage chamber 312 and the second storage chamber 313 into a grid pattern.

[0051] When the operator opens the isolation layer 314 through the second lead 34, the components A and B in the first storage chamber 312 and the second storage chamber 313 are mixed at different positions on the inner wall of the soft cannula 2, so that hydrogel can be generated at various positions of the soft cannula 2, thereby ensuring the bonding effect of the inner wall of the soft cannula 2, further avoiding the problem of cerebrospinal fluid leakage, and further reducing the difficulty of wound healing and the risk of complications such as infection.

[0052] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A medical anti-leakage drainage device, characterized in that: include: A drainage tube, a soft cannula, and an adhesive repair component; the drainage tube is connected to a first end of the soft cannula, and the second end of the soft cannula is used to be inserted into the gap in the intracranial dura mater; The adhesive repair component is arranged on the inside of the soft sleeve and is used to make the inner walls of the soft sleeve adhere to each other. The adhesive repair component includes an adhesive portion, a covering film and a first lead. The adhesive portion is arranged on the inner wall of the soft sleeve, and the covering film is arranged on the adhesive portion. The first end of the first lead is connected to the covering film, and the second end of the first lead extends out of the drainage tube.

2. The medical anti-leakage drainage device according to claim 1, characterized in that: The inner diameter of the soft sleeve is larger than the outer diameter of the drainage tube.

3. The medical anti-leakage drainage device according to claim 1, characterized in that: The soft sleeve is made of degradable polylactic acid or polyglycolic acid.

4. The medical anti-leakage drainage device according to claim 1, characterized in that: The bonding portion is an adhesive layer, and the adhesive layer is attached to the inner wall of the soft sleeve.

5. The medical anti-leakage drainage device according to claim 1, characterized in that: The bonding portion includes a first storage cavity, a second storage cavity and an isolation layer. The first storage cavity and the second storage cavity are both arranged on the inner wall of the soft sleeve and are respectively located at the two ends of the soft sleeve. The isolation layer is arranged between the first storage cavity and the second storage cavity. The isolation layer is arranged on the first storage cavity and the second storage cavity. Component A is arranged in the first storage cavity, and component B is arranged in the second storage cavity. The components A and B are mixed to form a hydrogel.

6. The medical anti-leakage drainage device according to claim 5, characterized in that: The bonding repair component further includes a second lead, a first end of the second lead is connected to the isolation layer, and a second end of the second lead extends out of the drainage tube.

7. The medical anti-leakage drainage device according to claim 5, characterized in that: The isolation layer is radially extending, and there are multiple isolation layers, and the multiple isolation layers are evenly spaced along the axial direction of the flexible sleeve; A plurality of axially extending separation zones are provided in the first storage cavity and the second storage cavity, and the plurality of separation zones are evenly spaced along the radial direction of the flexible sleeve.

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