Anti-leakage drainage equipment for clinical operation of general surgery department

Abstract

The invention relates to the technical field of medical instruments, in particular to anti-leakage drainage equipment for general surgery clinical operations, which comprises a drainage tube, a fixing ring is sleeved on the drainage tube, a positioning component is fixedly connected between the fixing ring and the peripheral skin of a drainage part of a patient, a fixing component is coaxially arranged in the fixing ring, and a first partition plate is fixedly connected in the fixing ring. A second partition plate is further slidably connected into the fixing ring, the interior of the fixing ring is divided into a gel cavity and a triggering cavity by the first partition plate and the second partition plate, pH gel used for triggering a locking mechanism of the fixing assembly through expansion after seepage according to the pH value of seepage is arranged in the gel cavity, and the bottom of the pH gel penetrates through the fixing ring and is fixedly connected with the positioning assembly. By combining the automatic response of the pH gel, the dual induction mechanism of the memory metal and the pressure sensor and the dynamic self-locking function of the cam assembly, the drainage tube is stably clamped and fixed, the drainage tube is effectively prevented from falling off, the infection risk is reduced, and the operation safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an anti-leakage drainage device for general surgical clinical operations. Background Art

[0002] Drainage is a crucial procedure in clinical surgery, designed to remove exudate, blood, or other body fluids from the surgical site to promote wound healing and prevent infection. However, leakage during drainage can not only lead to surgical site infection but also potentially impair the patient's recovery. Therefore, designing a drainage device that effectively prevents leakage is crucial.

[0003] Publication No. CN118079108B proposes a leakage-proof drainage device for general surgical clinical procedures. The device comprises a handle, a removable head, a lower stepless adjustment mechanism, and an upper stepless adjustment mechanism. The removable head is located at the upper end of the handle, the lower stepless adjustment mechanism is located in the middle of the handle, and the upper stepless adjustment mechanism is located above the lower stepless adjustment mechanism. These two mechanisms share the same internal structure. This device allows doctors to adjust the flushing and adsorption pressures based on the amount of fluid exudate in the drainage tube, preventing leakage.

[0004] However, the above solutions still rely on manual operation, and when the drainage tube begins to detach due to unexpected reasons, the existing fixing method often cannot respond in time, causing the drainage tube to fall off, thereby posing a risk of infection. At the same time, the existing drainage site mostly uses sutures to achieve closed drainage, which causes a certain degree of pain to the patient. To address the above problems, the present invention proposes an improved anti-leakage drainage device for general surgical clinical operations. Summary of the Invention

[0005] To solve the above problems, the present invention provides a leakage-proof drainage device for general surgical clinical operations. By combining the automatic response of pH gel, the dual sensing mechanism of memory metal and pressure sensor, and the dynamic self-locking function of the cam assembly, it achieves stable clamping and fixation of the drainage tube, effectively preventing the drainage tube from falling off, reducing the risk of infection, and improving surgical safety.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a leakage-proof drainage device for general surgical clinical operation, comprising a drainage tube, one end of the drainage tube is connected to a negative pressure machine, the other end of the drainage tube is connected to the patient's drainage site, a fixing ring is sleeved on the drainage tube near the patient's drainage site, the fixing ring is fixedly connected to the skin around the patient's drainage site, and a positioning component for fixing the fixing ring to the patient's skin surface is fixedly connected, a fixing component for triggering a locking and fixing mechanism according to the displacement of the drainage tube from the drainage site is coaxially provided inside the fixing ring, and a first partition is fixedly connected inside the fixing ring. A second partition is also slidably connected to the fixing ring. The first and second partitions divide the interior of the fixing ring into a gel chamber and a trigger chamber. A first slot in the shape of a quarter arc is provided on the bottom wall of the trigger chamber. A pH gel is provided in the gel chamber for triggering the locking mechanism of the fixing assembly by expansion according to the pH value of the exudate after penetration. A second slot is provided on the bottom wall of the gel chamber, which is connected to the interior of the base. The bottom of the pH gel extends through the second slot into the base. A sensing component is sleeved at the connection between the fixing ring and the drainage tube, which is used to trigger the locking mechanism of the fixing assembly according to the frictional heat generated when the drainage tube is detached.

[0007] The fixing assembly includes a rotating shaft fixedly connected to the center of the inner bottom wall of the fixing ring, the second partition is fixedly connected to the side wall of the rotating shaft, and a cam assembly and a trigger assembly are coaxially sleeved on the rotating shaft from top to bottom. The trigger assembly is located in the trigger cavity and is fixedly connected to the second partition. A number of clamping assemblies are provided on the side wall of the cam assembly. A limiting ring is fixedly connected to the top of the fixing ring. The drainage tube passes through the rotating shaft and the cam assembly and extends to the outside of the fixing ring. The limiting assembly is sleeved on the drainage tube and fixedly connected to the drainage tube. The trigger assembly is used to push the cam assembly to rotate according to the expansion of the pH gel. The cam assembly is used to rotate the trigger assembly and then push or pull the clamping assembly to complete the clamping or loosening action. The clamping assembly is used to clamp the limiting ring to lock the drainage tube to prevent it from detaching.

[0008] The technical principles of the above scheme are as follows:

[0009] When the pH of the exudate changes, causing the pH gel to expand, the gel causes the second diaphragm to slide within the retaining ring, pushing the trigger assembly, which in turn rotates the shaft and cam assembly. This displacement of the trigger assembly drives the shaft and the coaxially coupled cam assembly. The cam assembly's rotation pushes the clamping assembly, which clamps onto the retaining ring, securing the drainage tube. If the drainage tube unexpectedly begins to detach, the sensor assembly senses frictional heat and triggers the retaining assembly's locking mechanism, securing it.

[0010] The above scheme has the following beneficial effects:

[0011] 1. In this solution, the pH gel filled within the gel cavity expands according to changes in the pH of the exudate. When the pH of the exudate increases, such as in alkaline exudate caused by postoperative infection, the pH gel absorbs water and expands. This expansion not only triggers the locking mechanism but also indirectly provides real-time monitoring of the exudate's pH changes. This helps doctors promptly detect signs of postoperative infection and take appropriate treatment measures.

[0012] 2. In this solution, the sensing component is sleeved on the connection between the fixing ring and the drainage tube. It can sense the friction heat generated when the drainage tube accidentally detaches. When the drainage tube begins to detach for some reason, the sensing component responds quickly and triggers the locking mechanism of the fixing component. Through the dual chemical and physical sensing mechanisms, it ensures that the drainage tube can maintain a stable connection under various conditions, greatly reducing the risk of infection caused by the detachment of the drainage tube.

[0013] 3. This solution combines a tissue-friendly anchoring system with an intelligent locking mechanism. This device not only ensures a stable connection of the drainage tube, but also reduces pressure and discomfort on the patient's skin.

[0014] Furthermore, the pH gel includes a contact layer, an intermediate layer and a drainage layer from the inside to the outside, and the drainage layer is fixedly connected to the inner side wall of the fixed ring, wherein the contact layer is filled with a polyacrylic acid layer, the intermediate layer is filled with a complex of polyethylene glycol and chitosan, and the drainage layer is provided with a number of radial capillary channels.

[0015] Beneficial Effects: 1. The polyacrylic acid layer of the contact layer precisely responds to the pH of the exudate. The pH gel can monitor and respond to changes in the exudate in real time, thereby triggering the locking mechanism of the fixation component. This precise response helps doctors promptly detect signs of postoperative infection and take appropriate treatment measures.

[0016] 2. The osmotic pressure difference created by the polyethylene glycol and chitosan complex in the middle layer under alkaline conditions accelerates the transmission of swelling pressure and helps regulate the swelling rate and stability of the gel. This stable swelling property ensures that the pH gel can generate sufficient mechanical force in response to changes in the exudate to activate the locking mechanism of the fixed component.

[0017] 3. The radial capillary channel design of the drainage layer can use capillary action to drain excess tissue fluid radially along the channel, preventing fluid accumulation from affecting the response accuracy of the gel. This effective drainage mechanism helps maintain the cleanliness and stability of the gel cavity, preventing external contamination and interference.

[0018] Furthermore, a plurality of drainage holes are opened on the inner side wall of the fixing ring, and a seepage bag is provided on the outer side wall of the fixing ring, and the drainage holes are all communicated with the seepage bag.

[0019] Benefits: The drainage holes allow exudate to flow from the drainage site through the pH gel into the seepage bag in the event of leakage. By directing exudate directly into the seepage bag, the retaining ring design helps keep the patient's skin around the drainage site dry. A moist environment fosters bacterial growth, increasing the risk of infection. Dry skin, on the other hand, is easier to clean and maintain, helping to reduce the incidence of infection.

[0020] Furthermore, the positioning component includes a base, a dressing opening is opened on the inner bottom wall of the base, a dressing cloth is detachably connected to the dressing opening, the pH gel is located on the top of the dressing cloth, the edge of the dressing cloth extends through the base to the outside, and an adhesive tape is provided around the edge of the dressing cloth.

[0021] Beneficial Effects: The dressing adheres tightly to the patient's skin via the adhesive tape, forming a stable connection with the base, thereby enhancing the fixation stability of the entire positioning assembly. This helps prevent the drainage tube from accidentally falling off due to patient movement or external factors, thereby improving the safety of the drainage process. The pH gel carried on the top of the dressing can directly contact the patient's exudate, thereby more accurately responding to changes in the pH value of the exudate. The dressing acts as an isolation layer between the patient's skin and the pH gel, which can reduce direct irritation of the gel on the patient's skin. At the same time, the dressing also has certain moisture absorption and breathability, which helps keep the skin dry and comfortable, and reduces the risk of skin inflammation and infection.

[0022] Furthermore, the base is made of medical silicone.

[0023] Beneficial effects: Medical silicone has excellent biocompatibility and will not produce adverse reactions with human tissue. When the base is in contact with the patient's skin for a long time, it will not cause allergies, irritation or rejection reactions, thus ensuring the safety and comfort of the patient.

[0024] Furthermore, the trigger assembly includes a push rod, on which are respectively provided an X-rod, a Y-rod and a Z-rod located in three directions of the X, Y and Z axes, and an arc segment is provided between the X-rod and the Y-rod, wherein the X-rod is fixedly connected to the second partition, the Y-rod is fixedly connected to the rotating shaft, and the Z-rod extends through the first slot into the base and is fixedly connected to a pressure roller, which is located at the top of the dressing port.

[0025] Beneficial effect: When the pH gel expands in response to changes in the pH value of the exudate, the push rod drives the Z rod and the compression roller downward through the transmission of the X rod and the Y rod, thereby achieving compression and fixation of the dressing cloth.

[0026] Furthermore, the cam assembly includes a cam coaxially sleeved on the rotating shaft, and the cam is provided with a plurality of arc-shaped protruding teeth.

[0027] Beneficial effect: The movement of the push rod drives the cam to rotate, so that the clamping assembly can automatically clamp or release the limit ring, realizing a dynamic self-locking mechanism.

[0028] Furthermore, the clamping assemblies all include a transmission rod, which is rotatably connected to the side wall of the protruding tooth. The end of the transmission rod away from the protruding tooth passes through the fixed ring and is fixedly connected to a clamping claw. The middle part of the clamping claw is hinged on the outer wall of the fixed ring, and the end of the clamping claw away from the transmission rod is intermittently in contact with the limit ring.

[0029] Beneficial effect: When the cam rotates, the protruding teeth push the transmission rod, which in turn drives the clamping claw to rotate around the hinge point, thereby clamping or releasing the limit ring, ensuring the stability and reliability of the clamping process.

[0030] Furthermore, a spring is fixedly connected to the side wall of the clamping claw close to the limiting ring, and one end of the spring away from the clamping claw is fixedly connected to the outer side wall of the fixing ring.

[0031] Beneficial Effects: The spring's elastic force increases the gripping force of the clamping claws on the object, thereby improving clamping stability. During the clamping process, even if the retaining ring moves or vibrates slightly, the spring's elastic force maintains close contact between the clamping claws, preventing the retaining ring and, consequently, the drainage tube from falling off.

[0032] Furthermore, the sensing component includes a metal ring made of memory metal, a pressure sensor is provided on the inner wall of the metal ring, the pressure sensor signal is connected to the controller, a magnetic block is provided in the Y rod, and an electromagnet connected to the controller signal is provided in the first partition.

[0033] Beneficial effects: The metal ring is made of memory metal and has a shape memory effect. It can generate a radial contraction force inward according to the frictional heat generated when the drainage tube is detached. The pressure sensor can monitor the pressure on the inner wall of the metal ring in real time. Once the pressure exceeds the preset threshold, the controller can trigger a signal. The electromagnet generates a magnetic field according to the instructions of the controller, attracting or repelling the magnetic block in the Y rod, thereby driving the Y rod to move to realize the mechanism of the clamping claw locking the limit ring, thereby preventing the drainage tube from falling off.

[0034] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is an axonometric diagram of an embodiment of a leakage-proof drainage device for general surgical clinical operations according to the present invention;

[0036] Figure 2 This is a schematic isometric cross-sectional view of a positioning assembly of an embodiment of a leakage-proof drainage device for general surgical clinical operations according to the present invention;

[0037] Figure 3This is a schematic axonometric diagram of the interior of a fixing ring of an embodiment of the anti-leakage drainage device for general surgical clinical operations of the present invention.

[0038] The figure marks in the drawings of the specification include: 1. drainage tube; 2. base; 3. dressing cloth; 4. fixing ring; 5. transmission rod; 6. clamping claw; 7. spring; 8. limiting ring; 9. pressing roller; 10. Z rod; 11. first slot; 12. push rod; 13. X rod; 14. second partition; 15. Y rod; 16. cam; 17. protruding tooth; 18. first partition; 19. second slot. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0042] The following is further described in detail through specific implementation methods:

[0043] Example 1:

[0044] As attached Figure 1 、 Figure 2 and Figure 3The figure shows a leakage-proof drainage device for general surgical clinical operations, comprising a drainage tube 1. One end of the drainage tube 1 is connected to a negative pressure machine, and the other end of the drainage tube 1 is connected to the patient's drainage site. During clinical operations, when the pH value of the exudate rises to greater than 7.5, it is an early biomarker of postoperative infection. If not treated in time, pathogens can reversely invade the body cavity along the drainage tube 1 and the tissue gap, leading to deep infection or even sepsis. At the same time, alkaline exudate (pH 8-9) will destroy the normal acidic environment of the wound (pH 5.5-6.5), inhibit fibroblast activity, and delay wound healing.

[0045] Since traditional drainage mostly uses sutures to fix and isolate the drainage site from the external environment, it will cause the patient's pain and discomfort to increase. Therefore, a fixing ring 4 is sleeved on the drainage tube 1 near the patient's drainage site, and the fixing ring 4 is fixedly connected to the skin around the patient's drainage site with a positioning component for fixing the fixing ring 4 to the patient's skin surface. The positioning component includes a base 2, which is made of medical silicone. A dressing port is opened on the inner bottom wall of the base 2, and a dressing cloth 3 is detachably connected to the dressing port. Therefore, a composite fixing system of the medical silicone base 2 and the dressing cloth 3 is used to achieve tissue-friendly anchoring. The edge of the dressing cloth 3 extends through the base 2 to the outside, and an adhesive tape is provided around the edge of the dressing cloth 3. The soaked dressing cloth 3 is adsorbed on the skin around the patient's drainage site and fixed by the adhesive tape to prevent the wound at the drainage site from contacting the outside world and causing infection.

[0046] A fixing component is coaxially provided inside the fixing ring 4 for triggering the locking and fixing mechanism when the drainage tube 1 is displaced from the drainage part. A first partition 18 is fixedly connected inside the fixing ring 4, and a second partition 14 is also slidably connected inside the fixing ring 4. The first partition 18 and the second partition 14 separate the interior of the fixing ring 4 into a gel chamber and a trigger chamber. A first slot 11 of a quarter arc is provided on the bottom wall of the trigger chamber.

[0047] Existing drainage tubes 1 mostly rely on manual observation of exudate or mechanical fastening, which has the following problems: nurses can only check the drainage bag once an hour at most, and cannot capture pH mutations in real time. In addition, implantable pH sensors need to penetrate tissue to contact exudate, which increases the risk of secondary infection, and electronic sensors need to be implanted with electrodes and connected to external circuits, which are prone to passivation due to long-term contact with body fluids. A pH gel is provided in the gel cavity for triggering the locking mechanism of the fixing component by expansion according to the pH value of the exudate after penetration. A second slot 19 is provided on the bottom wall of the gel cavity, which is connected to the inside of the base 2. The bottom of the pH gel extends through the second slot 19 to the base 2 and is located on the top of the dressing 3. If the exudate at the drainage site seeps out from the dressing 3, the exudate is transferred to the pH gel through the dressing 3. The pH gel includes a contact layer, an intermediate layer and a drainage layer from the inside to the outside. The drainage layer is fixedly connected to the inner wall of the fixing ring 4. The contact layer is filled with a polyacrylic acid layer. The polyacrylic acid layer of the contact layer is exposed to a pH greater than 7. .5 When the infiltration occurs, the carboxylic acid group (-COOH) is protonated to become -COO-, and due to electrostatic repulsion, it absorbs water and expands (expansion rate > 300%). The middle layer is filled with a complex of polyethylene glycol and chitosan. The chitosan-polyethylene glycol complex in the middle layer breaks the β-1,4 glycosidic bond in an alkaline environment, dissolves to form an osmotic pressure difference (ΔP > 2kPa), and accelerates the transmission of expansion pressure. The drainage layer is provided with a number of radial capillary channels. The radial capillary channels of the drainage layer are treated with surface hydrophilic modification, and the capillary action is used to discharge excess tissue fluid radially along the channel to avoid liquid accumulation affecting the response accuracy of the gel.

[0048] The fixing assembly includes a rotating shaft fixedly connected to the center of the inner bottom wall of the fixing ring 4, the second partition 14 is fixedly connected to the side wall of the rotating shaft, and a cam assembly and a trigger assembly are coaxially sleeved on the rotating shaft from top to bottom. The trigger assembly is located in the trigger cavity and is fixedly connected to the second partition 14. A number of clamping assemblies are provided on the side wall of the cam assembly. A limiting ring 8 is fixedly connected to the top of the fixing ring 4. The drainage tube 1 passes through the rotating shaft and the cam assembly and extends to the outside of the fixing ring 4. The limiting assembly is sleeved on the drainage tube 1 and fixedly connected to the drainage tube 1. The trigger assembly is used to push the cam assembly to rotate according to the expansion of the pH gel. The cam assembly is used to push or pull the clamping assembly based on the rotation of the trigger assembly to complete the clamping or loosening action. The clamping assembly is used to clamp the limiting ring 8 to lock the drainage tube 1 to prevent it from detaching.

[0049] Specifically, the trigger assembly includes a push rod 12, on which are provided an X rod 13, a Y rod 15 and a Z rod 10 located in the three directions of the X, Y and Z axes, respectively. There is an arc segment between the X rod 13 and the Y rod 15, wherein the X rod 13 is fixedly connected to the second partition 14, the Y rod 15 is fixedly connected to the rotating shaft, and the Z rod 10 extends through the first slot 11 to the base 2 and is fixedly connected to a pressure roller 9. The pressure roller 9 is located at the top of the dressing port. When the pH gel expands and pushes the second partition 14 to displace along the quarter-circle first slot 11, the pressure roller 9 of the Z rod 10 is triggered to press down the dressing cloth 3, thereby improving the fit between the dressing cloth 3 and the skin and preventing external air from entering between the dressing cloth 3 and the skin and infecting the wound at the drainage site, thereby achieving a primary seal.

[0050] The cam assembly includes a cam 16 coaxially sleeved on the rotating shaft, and a plurality of arc-shaped protruding teeth 17 are provided on the cam 16. The clamping assemblies include a transmission rod 5, and the transmission rod 5 is rotatably connected to the side wall of the protruding tooth 17. The end of the transmission rod 5 away from the protruding tooth 17 passes through the fixed ring 4 and is fixedly connected to the clamping claw 6. The middle of the clamping claw 6 is hinged to the outer wall of the fixed ring 4. The end of the clamping claw 6 away from the transmission rod 5 is intermittently in contact with the limit ring 8. When the cam 16 is in the reset state, the transmission rod 5 is located at the inner periphery of the protruding tooth 17. At this time, since the middle of the clamping claw 6 is hinged to the outer wall, when the transmission rod 5 and the clamping claw 6 are located inside the protruding tooth 17 When the handle is closed, the bottom of the clamping claw 6 is closer to the fixing ring 4. According to the lever principle at the hinge, the top of the clamping claw 6 is away from the limit ring 8, and the clamping state of the clamping claw 6 is not triggered. The side wall of the clamping claw 6 close to the limit ring 8 is fixedly connected with a spring 7, and the end of the spring 7 away from the clamping claw 6 is fixedly connected to the outer wall of the fixing ring 4. When the push rod 12 drives the rotating shaft to rotate, the cam 16 also rotates with the rotating shaft. At this time, the transmission rod 5 pushes the bottom of the clamping claw 6, and the top of the clamping claw 6 clamps the edge of the limit ring 8 under the joint action of the lever and the spring 7 to achieve locking, preventing the drainage tube 1 from being pulled out and achieving secondary sealing.

[0051] When the pH of the exudate returns to normal, the chitosan complex in the middle layer repolymerizes, closing the outlet of the capillary channel and preventing excessive drainage from causing wound drying.

[0052] Example 2:

[0053] As attached Figure 1 and Figure 3 As shown, the difference from Example 1 is that during the drainage process, if the patient himself moves due to pain or the drainage tube 1 is accidentally pulled out of the drainage site, the drainage operation will fail. Therefore, an induction component is sleeved at the connection between the fixing ring 4 and the drainage tube 1 for triggering the clamping claw 6 and the limit plate locking mechanism according to the friction heat generated when the drainage tube 1 is detached.

[0054] The sensing component includes a metal ring made of memory metal. Since the drainage tube 1 has both axial displacement and rotational friction when it is accidentally displaced, a metal ring with shape memory alloy is used. When the displacement of the drainage tube 1 is greater than 3mm, the rotational friction generates a temperature above 40°C to activate the radial contraction of the memory metal, and the inner diameter of the metal ring is reduced by 0.5mm to form a preliminary constraint. A pressure sensor is provided on the inner wall of the metal ring, and the pressure sensor signal is connected to the controller. The pressure sensor receives the pressure of the metal ring contraction and transmits the signal to the controller. A magnetic block is provided in the Y rod 15, and an electromagnet connected to the controller signal is provided in the first partition 18. At this time, the controller turns on the electromagnet, and the electromagnet absorbs the magnetic block in the Y rod 15, so that the push rod 12 moves along the first quarter arc slot 11 to trigger the cam 16 and the clamping claw 6 to lock the limit ring 8, ensuring that the drainage tube 1 will not be separated from the patient's drainage site due to accidental displacement.

[0055] Example 3:

[0056] The difference from Example 2 is that a number of drainage holes are opened on the inner wall of the fixing ring 4, and a seepage bag is provided on the outer wall of the fixing ring 4. The drainage holes are connected to the seepage bag. The radial capillary channels not only transmit pressure, but also the hydrophilic modified channels use capillary action to guide excess seepage from the drainage holes into the seepage bag, thereby avoiding liquid accumulation and breeding of bacteria.

[0057] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A leakage-proof drainage device for general surgical clinical operation, comprising a drainage tube (1), one end of which is connected to a negative pressure machine, characterized in that: The other end of the drainage tube (1) is connected to the drainage part of the patient. A fixing ring (4) is sleeved on the drainage tube (1) near the drainage part of the patient. The fixing ring (4) is fixedly connected to the skin around the drainage part of the patient. A positioning component for fixing the fixing ring (4) to the surface of the patient's skin is provided. A fixing component for triggering a locking and fixing mechanism when the drainage tube (1) is displaced from the drainage part is coaxially provided in the fixing ring (4). A first partition (18) is fixedly connected in the fixing ring (4). A second partition (14) is also slidably connected in the fixing ring (4). The first partition (18) and the second partition ( 14) The interior of the fixing ring 4 is divided into a gel chamber and a trigger chamber, a first slot (11) of a quarter arc is provided on the bottom wall of the trigger chamber, a pH gel is provided in the gel chamber for triggering the locking mechanism of the fixing assembly by expansion according to the pH value of the exudate after penetration, a second slot (19) is provided on the bottom wall of the gel chamber for communicating with the interior of the base (2), the bottom of the pH gel passes through the second slot (19) and extends into the base (2), and a sensing component is sleeved at the connection between the fixing ring (4) and the drainage tube (1) for triggering the locking mechanism of the fixing assembly according to the friction heat generated when the drainage tube (1) is detached; The fixing assembly includes a rotating shaft fixedly connected to the center of the inner bottom wall of the fixing ring (4), a second partition (14) fixedly connected to the side wall of the rotating shaft, a cam assembly and a trigger assembly coaxially sleeved from top to bottom on the rotating shaft, the trigger assembly is located in the trigger cavity and fixedly connected to the second partition (14), a plurality of clamping assemblies are provided on the side wall of the cam assembly, a limiting ring (8) is fixedly connected to the top of the fixing ring (4), the drainage tube (1) passes through the rotating shaft and the cam assembly and extends to the outside of the fixing ring (4), the limiting assembly is sleeved on the drainage tube (1) and fixedly connected to the drainage tube (1), the trigger assembly is used to push the cam assembly to rotate according to the expansion of the pH gel, the cam assembly is used to rotate the trigger assembly and then push or pull the clamping assembly to complete the clamping or loosening action, and the clamping assembly is used to clamp the limiting ring (8) to lock the drainage tube (1) to prevent it from detaching.

2. The anti-leakage drainage device for general surgical clinical operation according to claim 1, characterized in that: The pH gel comprises a contact layer, an intermediate layer and a discharge layer from the inside to the outside, wherein the discharge layer is fixedly connected to the inner wall of the fixed ring (4), wherein the contact layer is filled with a polyacrylic acid layer, the intermediate layer is filled with a composite of polyethylene glycol and chitosan, and the discharge layer is provided with a plurality of radial capillary channels.

3. The anti-leakage drainage device for general surgical clinical operation according to claim 2, characterized in that: A plurality of drainage holes are provided on the inner side wall of the fixing ring (4), and a seepage bag is provided on the outer side wall of the fixing ring (4), and the drainage holes are all communicated with the seepage bag.

4. The anti-leakage drainage device for general surgical clinical operation according to claim 3, characterized in that: The positioning component comprises a base (2), a dressing opening is formed on the inner bottom wall of the base (2), a dressing cloth (3) is detachably connected to the dressing opening, a pH gel is located on the top of the dressing cloth (3), the edge of the dressing cloth (3) passes through the base (2) and extends to the outside, and an adhesive tape is provided around the edge of the dressing cloth (3).

5. The anti-leakage drainage device for general surgical clinical operation according to claim 4, characterized in that: The base (2) is made of medical silica gel.

6. The anti-leakage drainage device for general surgical clinical operation according to claim 5, characterized in that: The trigger assembly comprises a push rod (12), on which an X rod (13), a Y rod (15) and a Z rod (10) are respectively provided, which are located in three directions of the X, Y and Z axes. An arc section is formed between the X rod (13) and the Y rod (15), wherein the X rod (13) is fixedly connected to the second partition (14), the Y rod (15) is fixedly connected to the rotating shaft, and the Z rod (10) passes through the first slot (11) and extends into the base (2) and is fixedly connected to a pressing roller (9), which is located at the top of the dressing opening.

7. The anti-leakage drainage device for general surgical clinical operation according to claim 6, characterized in that: The cam assembly comprises a cam (16) coaxially sleeved on the rotating shaft, and the cam (16) is provided with a plurality of arc-shaped protruding teeth (17).

8. The anti-leakage drainage device for general surgical clinical operation according to claim 7, characterized in that: The clamping assemblies all include a transmission rod (5), and the transmission rod (5) is rotatably connected to the side wall of the protruding tooth (17). The end of the transmission rod (5) away from the protruding tooth (17) passes through the fixed ring (4) and is fixedly connected to a clamping claw (6). The middle part of the clamping claw (6) is hinged on the outer side wall of the fixed ring (4), and the end of the clamping claw (6) away from the transmission rod (5) is intermittently in contact with the limit ring (8).

9. The anti-leakage drainage device for general surgical clinical operation according to claim 8, characterized in that: The side wall of the clamping claw (6) close to the limiting ring (8) is fixedly connected with a spring (7), and the end of the spring (7) away from the clamping claw (6) is fixedly connected to the outer side wall of the fixing ring (4).

10. The anti-leakage drainage device for general surgical clinical operation according to claim 9, characterized in that: The induction component comprises a metal ring made of memory metal, a pressure sensor is arranged on the inner wall of the metal ring, the pressure sensor signal is connected to the controller, a magnetic block is arranged in the Y rod (15), and an electromagnet connected to the controller signal is arranged in the first partition (18).

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