Catheter fixer for gastrointestinal surgery and use method thereof

Abstract

The invention discloses a catheter fixator for gastrointestinal surgery and a using method thereof, and relates to the technical field of medical instruments. The fixator comprises a composite base, a rotary adjusting mechanism, a fixing plate and a main body fixing clamp. The base top layer of the composite base is a medical silica gel base top, and the base bottom layer of the composite base is a hydrocolloid adhesion layer. A base of the rotation adjusting mechanism is connected with the composite base, and a top base can rotate horizontally and is fixed through a fastening adjusting nut. The main body fixing clamp comprises a clamping jaw and an adsorption assembly, the clamping jaw drives clamping arms to clamp a pipe through an abutting plate, the adsorption assembly comprises long-strip-shaped suction cups in the middle and on the side, and suction force is provided by an air pump. And a self-adaptive angle adjusting mechanism is arranged between the edge sucking disc and the clamping arm. During use, the composite base is pasted at a selected position, then the rotation angle is adjusted, then the catheter is placed and fixed, regular monitoring and adjustment are conducted, and finally removal and cleaning are conducted according to needs. The fixing device is stable in fixation, high in adaptability, convenient to operate and capable of effectively solving the gastrointestinal surgery catheter fixing problem.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a catheter fixator for gastrointestinal surgery and its usage method. Background Technique

[0002] In the clinical treatment of gastrointestinal surgery, various catheters are often used, such as gastric tubes, enteral nutrition tubes, drainage tubes, etc. These catheters play a crucial role in the treatment and recovery of patients. However, the fixation of catheters has always been a difficult problem.

[0003] Traditional catheter fixation methods mostly use adhesive tapes, but this method has many drawbacks. On the one hand, the adhesive tape is likely to have a reduced stickiness due to factors such as the patient's sweating and skin oil secretion, resulting in the loosening or even detachment of the catheter, increasing the patient's infection risk and also affecting the treatment effect; on the other hand, frequent replacement of the adhesive tape will cause irritation and damage to the patient's skin, bringing additional pain to the patient.

[0004] In addition, some existing catheter fixation devices lack flexibility and adaptability. The orientation and angle of catheters in the body vary, while existing fixation devices often cannot be effectively adjusted according to the actual situation, resulting in unnecessary pulling and twisting of the catheters, which not only affects the normal use of the catheters but may also cause harm to the patient's body. At the same time, it is difficult for existing fixation devices to provide a stable fixation effect for catheters of different diameters.

[0005] Therefore, there is an urgent need for a new type of catheter fixator for gastrointestinal surgery that can solve the above problems and improve the stability, comfort, and adaptability of catheter fixation. Summary of the Invention

[0006] The purpose of the present invention is to provide a catheter fixator for gastrointestinal surgery and its usage method to solve the problems mentioned in the above background technique.

[0007] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention provides a catheter fixator for gastrointestinal surgery, including: A composite base; A rotation adjustment mechanism, the bottom of which is fixedly connected to the top of the composite base; A fixing plate, which is installed on the top of the rotation adjustment mechanism; A main body fixing clip, the main body fixing clip includes several groups of fixing units, each fixing unit includes a clamping jaw and an adsorption component installed on the clamping jaw, and an adaptive angle adjustment mechanism is provided between the adsorption component and the clamping jaw.

[0008] As a preferred technical solution of the present invention, the composite base includes a top base layer and a base layer, the top base layer is a medical silicone top base layer, and the base layer is a hydrocolloid adhesion layer.

[0009] As a preferred technical solution of the present invention, the rotation adjustment mechanism includes a base and a top seat installed on the top of the base and can rotate horizontally, and a fastening adjustment nut is provided on one side of the base.

[0010] As a preferred technical solution of the present invention, the top of the composite base is fixedly connected to the bottom of the base, the top seat is fixedly connected to the bottom of the fixed plate, and the base and the top seat are detachable.

[0011] As a preferred technical solution of the present invention, the clamping jaw comprises: A seat frame, wherein the bottom of the seat frame is fixedly connected to the top of the fixed plate, and hinged plates are arranged on both sides of the seat frame; Clamp arms, wherein there are two clamp arms and the clamp arms are respectively mounted on the top of the hinged plate; The contact plate is located above the seat frame, and both sides of the contact plate are connected to the clamping arms through cantilevers. When the contact plate descends, the ends of the clamping arms on both sides are driven to move toward the middle of the seat frame.

[0012] As a preferred technical solution of the present invention, the adsorption assembly includes a middle suction cup installed on the top of the contact plate, and an edge suction cup installed on the top of the clamping arm, an air pump and matching pipes, and the adaptive angle adjustment mechanism is installed between the bottom of the edge suction cup and the top of the clamping arm.

[0013] As a preferred technical solution of the present invention, the middle suction cup and the side suction cup are both in the shape of long strips, and the long axis direction thereof is consistent with the extension direction of the catheter.

[0014] As a preferred technical solution of the present invention, The adaptive angle adjustment mechanism comprises: Side guards; A spring lock plate, the spring lock plate is fixedly mounted on the inner surface of the side guard plate; A swing plate, a rotating shaft is installed on the side guard plate, the swing plate is installed on the rotating shaft, and the swing plate and the spring lock plate are locked with each other, a spring is arranged in the groove in the swing plate, two ends of the spring are respectively in contact with the spring lock plate and the swing plate, the top of the swing plate is fixedly connected to the bottom of the edge suction cup, and when the swing plate rotates, the edge suction cup can be driven to rotate.

[0015] The method for using the above-mentioned gastrointestinal surgical catheter fixer comprises the following steps: S1: Preparation stage: Select a suitable installation location, clean the patient's skin, and ensure that the installation site is dry and free of dirt and grease; align the base layer (hydrocolloid adhesive layer) of the composite base with the installation location, and press the composite base to make it firmly adhere to the patient's skin; S2: Rotation adjustment: According to the direction of the catheter and actual needs, loosen the tightening adjustment nut on one side of the base of the rotation adjustment mechanism, rotate the top seat, drive the fixing plate and the main body fixing clamp to rotate horizontally, adjust to the appropriate angle, tighten the tightening adjustment nut to fix the rotation position; S3: Catheter placement and fixation: Place the gastrointestinal surgical catheter on the top of the frame, press down the contact plate, and the contact plate drives the ends of the clamp arms on both sides to move toward the middle of the frame through the cantilever, so that the clamp arms initially clamp the catheter, start the air pump, and generate adsorption force through the pipe to the middle suction cup and the side suction cup, further adsorb and fix the catheter to ensure the stability of the catheter; S4: Monitoring and adjustment: Regularly check the stability of the catheter holder and the condition of the patient's skin. If necessary, slightly loosen the tightening adjustment nut and readjust the angle or position to avoid pressure damage to the skin. S5: Removal and cleaning: When the catheter no longer needs to be fixed or needs to be changed, first turn off the air pump to release the adsorption state, then gently release the clamping jaws and remove the catheter holder.

[0016] The present invention has the following beneficial effects: First of all, it performs well in terms of fixation effect. The dual functions of the clamp and the adsorption component ensure that the catheter is stably fixed, greatly reducing the risk of catheter loosening and falling off, ensuring the safety and effectiveness of treatment, and reducing problems such as infection caused by catheter displacement. Secondly, it has good adaptability and adopts the side adsorption method, which has a high matching degree and can be applied to catheters of various diameters. The rotation adjustment mechanism can rotate horizontally, and the adaptive angle adjustment mechanism allows the edge suction cup to adapt to the different directions and curvatures of the catheter, which can cope with various complex clinical situations. Furthermore, it improves the comfort of patients. The composite base adopts medical silicone and hydrocolloid adhesion layer to reduce irritation and damage to the skin, and avoids skin discomfort caused by traditional fixation methods. In addition, it is easy to operate, easy for medical staff to master, and can improve work efficiency. It has high application value and promotion prospects in the field of gastrointestinal surgical catheter fixation.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 Schematic three-dimensional structure diagram of the present invention; Figure 2 Side view of the present invention; Figure 3 Schematic combined structure diagram of the composite base and the rotation adjustment mechanism in the present invention; Figure 4 Schematic three-dimensional structure diagram of the main body fixing clip in the present invention; Figure 5 Schematic structure diagram of the clamping jaw in the present invention; Figure 6 Schematic three-dimensional structure diagram of the adsorption component in the present invention; Figure 7 For Figure 6 Schematic diagram of another perspective; Figure 8 Schematic combined structure diagram of the adaptive angle adjustment mechanism and the side suction cup in the present invention; Figure 9 Schematic three-dimensional structure diagram of the adaptive angle adjustment mechanism in the present invention; In the drawings, the list of components represented by each reference numeral is as follows: 1 - Composite base; 2 - Rotation adjustment mechanism, 21 - Base, 22 - Top seat, 23 - Tightening adjustment nut; 3 - Fixed plate; 4 - Clamping jaw, 41 - Seat frame, 42 - Clamping arm, 43 - Contact plate, 44 - Cantilever; 5 - Adsorption component, 51 - Middle suction cup, 52 - Side suction cup, 53 - Pipeline; 6 - Adaptive angle adjustment mechanism, 61 - Side guard plate, 62 - Spring lock plate, 63 - Swing plate, 64 - Rotating shaft, 65 - Spring. Detailed implementation manners

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0022] Embodiment 1 As Figures 1-3 shown: A catheter fixator for gastrointestinal surgery, comprising: a composite base 1; A rotation adjustment mechanism 2, the bottom of the rotation adjustment mechanism 2 is fixedly connected to the top of the composite base 1; A fixing plate 3, the fixing plate 3 is installed on the top of the rotation adjustment mechanism 2; a main body fixing clip, the main body fixing clip includes several groups of fixing units, each fixing unit includes a clamping jaw 4 and an adsorption component 5 installed on the clamping jaw 4, and an adaptive angle adjustment mechanism 6 is arranged between the adsorption component 5 and the clamping jaw 4. The composite base 1 includes a base top layer and a base bottom layer, the base top layer is a medical silicone base top, and the base bottom layer is a hydrocolloid adhesion layer.

[0023] In this embodiment, the composite base 1 serves as the bottom support structure of the entire fixator, and its design takes into account both stability and comfort. The composite base 1 consists of two layers: a base top layer and a base bottom layer.

[0024] Base top layer: Made of medical silicone material, this material is soft and skin-friendly, which can effectively reduce the pressure and discomfort on the patient's skin and ensure comfort during long-term wearing.

[0025] Base bottom layer: It is a hydrocolloid adhesion layer, which has strong adhesion and can firmly adhere to the patient's skin to ensure that the catheter fixator will not fall off or shift during use. At the same time, the hydrocolloid material also has certain breathability and moisture retention, which helps to keep the patient's skin dry and comfortable. The composite base 1 is disposable and can be discarded after specific use.

[0026] Embodiment 2 Based on Embodiment 1, the difference in this embodiment is: As Figure 3 shown, the rotation adjustment mechanism 2 includes a base 21 and a top seat 22 installed on the top of the base 21 that can rotate horizontally. A fastening adjustment nut 23 is arranged on one side of the base 21. The top of the composite base 1 is fixedly connected to the bottom of the base 21, the top seat 22 is fixedly connected to the bottom of the fixing plate 3, and the base 21 and the top seat 22 are detachable.

[0027] In this embodiment, the base 21 is used as the fixed part of the rotation adjustment mechanism 2, and its bottom is fixedly connected to the top of the composite base 1. This connection method ensures the stability between the rotation adjustment mechanism 2 and the composite base 1. The top seat 22 is installed on the top of the base 21 and can rotate 360 ​​degrees freely on the horizontal plane. This design allows doctors or nurses to easily adjust the angle of the catheter holder as needed to adapt to different surgical environments and catheter directions. The tightening adjustment nut 23 is set on one side of the base 21 to fix and adjust the rotation angle of the top seat 22. When the angle of the catheter holder needs to be adjusted, it is only necessary to loosen the tightening adjustment nut 23, then rotate the top seat 22 to the desired position, and finally tighten the tightening adjustment nut 23 again. This design is not only easy to operate, but also ensures the stability of the catheter holder during use. Another important improvement in this embodiment is the detachable connection between the base 21 and the top seat 22. This design allows doctors or nurses to easily disassemble and replace the components of the rotation adjustment mechanism 2 as needed, thereby improving the flexibility and maintainability of the catheter holder. Usually, the composite base 1 and the base 21 are disposable during use, and the top seat 22 and the main body fixing parts thereon are reusable, so each time after use, only the top seat 22 needs to be disassembled.

[0028] Embodiment 3 Based on the first embodiment, the difference of this embodiment is that: like Figures 4-9 As shown: the clamping jaw 4 includes: a frame 41, the bottom of the frame 41 is fixedly connected to the top of the fixed plate 3, and hinge plates are arranged on both sides of the frame 41; a clamping arm 42, there are two clamping arms 42 and they are respectively installed on the top of the hinge plates; a resistance plate 43, the resistance plate 43 is located above the frame 41, and the two sides of the resistance plate 43 are connected to the clamping arm 42 through cantilevers 44, when the resistance plate 43 descends, it drives the ends of the clamping arms 42 on both sides to move toward the middle of the frame 41.

[0029] The adsorption assembly 5 includes a middle suction cup 51 installed on the top of the contact plate 43, a side suction cup 52 installed on the top of the clamp arm 42, an air pump and a matching pipeline 53, and an adaptive angle adjustment mechanism 6 installed between the bottom of the side suction cup 52 and the top of the clamp arm 42. The middle suction cup 51 and the side suction cup 52 are both long strips, and their long axis direction is consistent with the extension direction of the catheter.

[0030] The adaptive angle adjustment mechanism 6 includes: a side guard plate 61; a spring locking plate 62 fixedly installed on the inner surface of the side guard plate 61; a swing plate 63, a rotating shaft 64 is installed on the side guard plate 61, the swing plate 63 is installed on the rotating shaft, and the swing plate 63 is buckled with the spring locking plate 62. A spring 65 is arranged in the groove of the swing plate 63, and both ends of the spring 65 are in contact with the spring locking plate 62 and the swing plate 63 respectively. The top of the swing plate 63 is fixedly connected to the bottom of the edge suction cup 52. When the swing plate 63 rotates, it can drive the edge suction cup 52 to rotate.

[0031] In this embodiment, the seat frame 41 is the basic structure of the jaw 4. Its bottom is fixedly connected to the top of the fixed plate 3. The design of the seat frame 41 ensures that the jaw 4 can be stably mounted on the fixed plate 3. Hinge plates are provided on both sides of the seat frame 41. These hinge plates are used to mount the jaw arms 42 and allow the jaw arms 42 to swing within a certain range. There are two jaw arms 42, which are respectively mounted on the tops of the hinge plates on both sides of the seat frame 41. The design of the jaw arms 42 enables them to swing inward as the contact plate 43 descends, so as to approach the target object. The contact plate 43 is located above the seat frame 41, and its two sides are connected to the jaw arms 42 through the cantilever 44. When the contact plate 43 descends, it drives the ends of the two jaw arms 42 to move towards the middle of the seat frame 41 through the cantilever 44, thus realizing the clamping action. The adsorption assembly 5 includes a middle suction cup 51 and side suction cups 52, which adsorb the catheter through the adsorption force. Both the middle suction cup 51 and the side suction cups 52 are strip-shaped, and the long axis direction thereof is consistent with the extension direction of the specific catheter arrangement during the surgical operation. This design helps to increase the adsorption area of the suction cup and improve the adsorption effect. The air pump is connected to the middle suction cup 51 and the side suction cups 52 through the pipeline 53 to provide the negative pressure required for adsorption. The side guard plate 61 is the basic structure of the adaptive angle adjustment mechanism 6 and is used to mount the spring lock plate 62 and the rotating shaft 64. The spring lock plate 62 is fixedly installed on the inner surface of the side guard plate 61 and is used for snap connection with the swing plate 63 and provides a certain resistance to prevent the swing plate 63 from rotating randomly. The swing plate 63 is mounted on the rotating shaft 64 and is allowed to swing within a certain range. The top of the swing plate 63 is fixedly connected to the bottom of the side suction cup 52. Therefore, when the swing plate 63 rotates, it drives the side suction cup 52 to rotate together. A spring 65 is arranged in the groove of the swing plate 63, and both ends of the spring 65 are in contact with the spring lock plate 62 and the swing plate 63 respectively. This design enables the swing plate 63 to swing to a certain extent when subjected to an external force and return to the original position after the external force disappears. Embodiment 3 improves the clamping ability and adaptability of the device by introducing a new design of the jaw 4, the adsorption assembly 5 and the adaptive angle adjustment mechanism 6. The design of the jaw 4 allows the device to have better flexibility and stability when clamping target objects of different shapes and sizes. The adsorption assembly 5 provides an additional adsorption force, which helps to ensure that the target object will not fall off during the clamping process. The adaptive angle adjustment mechanism 6 allows the side suction cup 52 to be adaptively adjusted according to the shape and size of the target object, thereby further improving the clamping effect of the device.

[0032] The present invention also provides a method for using the catheter fixator for gastrointestinal surgery. The specific implementation process of this fixator is as follows: S1 Preparation stage: The nurse first selects a suitable installation position on the patient's abdomen, which is close to the catheter outlet and has a relatively flat skin. Use a mild detergent and clean water to clean the skin of the area, and then wipe it dry with a clean gauze to ensure that the installation area is dry and free of dirt and grease. Next, align the base layer of the composite base with the installation position, gently press the composite base, and use the viscosity of the hydrocolloid adhesive layer to firmly adhere it to the patient's skin. Since the base top layer is a medical silicone base top, it is soft and comfortable when in contact with the skin, reducing the patient's discomfort. S2 Rotation adjustment: According to the direction of the catheter leading out of the patient's body, the nurse found that the fixator needed to be rotated a certain angle to better follow the direction of the catheter. Therefore, the nurse loosened the tightening adjustment nut 23 on one side of the base 21 of the rotation adjustment mechanism, gently turned the top seat 22, and the top seat 22 drove the fixing plate 3 and the main body fixing clamp to rotate horizontally. After adjusting to the appropriate angle, the nurse tightened the tightening adjustment nut 23 to fix the rotation position. At this time, the base 21 and the top seat 22 are tightly connected to ensure the stability of the fixator angle.

[0033] S3 Catheter placement and fixation: The nurse places the gastrointestinal surgical catheter on the top of the frame 41, and then presses down the contact plate 43. The contact plate 43 drives the ends of the clamp arms 42 on both sides to move toward the middle of the frame 41 through the cantilever 44, so that the clamp arms 42 initially clamp the catheter. Then, the nurse starts the air pump, and the air pump generates adsorption force through the pipeline 53 on the middle suction cup 51 installed on the top of the contact plate 43 and the side suction cup 52 installed on the top of the clamp arm 42. Since the middle suction cup 51 and the side suction cup 52 are both long strips, and the long axis direction is consistent with the extension direction of the catheter, they can better fit the surface of the catheter, further adsorb and fix the catheter, and ensure that the catheter is stable and will not shake or shift easily. The adaptive angle adjustment mechanism 6 installed between the bottom of the side suction cup 52 and the top of the clamp arm 42 can automatically adjust according to the actual angle of the catheter when the suction cup adsorbs the catheter, so that the suction cup and the catheter always maintain good contact. For example, when the catheter has a certain tilt angle during placement, the swing plate 63 rotates under the action of the spring 65, driving the edge suction cup 52 to rotate, thereby adapting to the tilt angle of the catheter and ensuring the adsorption effect. S4 Monitoring and adjustment: During the period when the patient has a catheter, the nurse will regularly check the stability of the catheter holder and the condition of the patient's skin. Check every 4 hours to observe whether the holder is loose and whether the patient's skin has redness, indentations, etc. During an inspection, the nurse found that due to the change in the patient's body position, the angle of the holder exerted a certain amount of pressure on the skin. Therefore, the nurse slightly loosened the tightening adjustment nut 23 and readjusted the angle of the rotating adjustment mechanism to reduce the pressure of the holder on the skin and avoid pressure damage to the skin. After adjustment, tighten the tightening adjustment nut 23 again to ensure the stability of the holder. S5 Removal and cleaning: When the patient's condition improves and the gastrointestinal decompression catheter is no longer needed, the nurse first turns off the air pump to release the adsorption state of the middle suction cup 51 and the side suction cup 52. Then, gently release the clamping claws, that is, lift the contact plate 43 upward, so that the ends of the clamping arms 42 move to both sides to release the clamping of the catheter. Finally, carefully remove the catheter holder. After removal, the nurse cleans and disinfects the holder for next use. When cleaning, first rinse the dirt on the surface of the holder with clean water, then soak it in disinfectant for a period of time, and finally rinse it with clean water and dry it.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A gastrointestinal surgical catheter fixator, characterized in that: include: Composite base (1); A rotary adjustment mechanism (2), wherein the bottom of the rotary adjustment mechanism (2) is fixedly connected to the top of the composite base (1); A fixing plate (3), the fixing plate (3) being mounted on the top of the rotation adjustment mechanism (2); A main body fixing clamp, the main body fixing clamp comprising a plurality of fixing units, each fixing unit comprising a clamping jaw (4) and an adsorption assembly (5) mounted on the clamping jaw (4), and an adaptive angle adjustment mechanism (6) being provided between the adsorption assembly (5) and the clamping jaw (4).

2. A gastrointestinal surgical catheter fixer according to claim 1, characterized in that: The composite base (1) comprises a top base layer and a base layer, the top base layer is a medical silicone top base layer, and the base layer is a hydrocolloid adhesive layer.

3. A gastrointestinal surgical catheter fixer according to claim 1, characterized in that: The rotation adjustment mechanism (2) comprises a base (21) and a top seat (22) mounted on the top of the base (21) and capable of horizontal rotation. A fastening adjustment nut (23) is provided on one side of the base (21).

4. A gastrointestinal surgical catheter fixer according to claim 3, characterized in that: The top of the composite base (1) is fixedly connected to the bottom of the base (21), the top seat (22) is fixedly connected to the bottom of the fixing plate (3), and the base (21) and the top seat (22) are detachable.

5. A gastrointestinal surgical catheter fixer according to claim 1, characterized in that: The clamping jaw (4) comprises: A seat frame (41), wherein the bottom of the seat frame (41) is fixedly connected to the top of the fixing plate (3), and hinged plates are provided on both sides of the seat frame (41); Clamp arms (42), two of which are mounted on the top of the hinged plate respectively; The contact plate (43) is located above the seat frame (41), and two sides of the contact plate (43) are connected to the clamping arms (42) via cantilevers (44). When the contact plate (43) descends, the ends of the clamping arms (42) on both sides are driven to move toward the middle of the seat frame (41).

6. A gastrointestinal surgical catheter fixer according to claim 5, characterized in that: The adsorption assembly (5) comprises a middle suction cup (51) mounted on the top of the contact plate (43), a side suction cup (52) mounted on the top of the clamp arm (42), an air pump and a matching pipe (53), and the adaptive angle adjustment mechanism (6) is mounted between the bottom of the side suction cup (52) and the top of the clamp arm (42).

7. A gastrointestinal surgical catheter fixer according to claim 6, characterized in that: The middle suction cup (51) and the side suction cup (52) are both in the shape of long strips, and the direction of their long axes is consistent with the extension direction of the catheter.

8. A gastrointestinal surgical catheter fixer according to claim 6, characterized in that: The adaptive angle adjustment mechanism (6) comprises: Side guard (61); A spring lock plate (62), the spring lock plate (62) being fixedly mounted on the inner surface of the side guard plate (61); A swing plate (63), a rotating shaft (64) is installed on the side guard plate (61), the swing plate (63) is installed on the rotating shaft, and the swing plate (63) and the spring lock plate (62) are mutually locked, a spring (65) is arranged in a groove in the swing plate (63), two ends of the spring (65) are respectively in contact with the spring lock plate (62) and the swing plate (63), the top of the swing plate (63) is fixedly connected to the bottom of the edge suction cup (52), and when the swing plate (63) rotates, the edge suction cup (52) can be driven to rotate.

9. The method for using the gastrointestinal surgical catheter fixer according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: Preparation stage: Select a suitable installation location, clean the patient's skin, and ensure that the installation site is dry and free of dirt and grease; align the base layer of the composite base with the installation location, and press the composite base to make it firmly adhere to the patient's skin; S2: Rotation adjustment: According to the direction of the catheter and actual needs, loosen the tightening adjustment nut on one side of the base of the rotation adjustment mechanism, rotate the top seat, drive the fixing plate and the main body fixing clamp to rotate horizontally, adjust to the appropriate angle, tighten the tightening adjustment nut to fix the rotation position; S3: Catheter placement and fixation: Place the gastrointestinal surgical catheter on the top of the frame, press down the contact plate, and the contact plate drives the ends of the clamp arms on both sides to move toward the middle of the frame through the cantilever, so that the clamp arms initially clamp the catheter, start the air pump, and generate adsorption force through the pipe to the middle suction cup and the side suction cup, further adsorb and fix the catheter to ensure the stability of the catheter; S4: Monitoring and adjustment: Regularly check the stability of the catheter holder and the condition of the patient's skin. If necessary, slightly loosen the tightening adjustment nut and readjust the angle or position to avoid pressure damage to the skin. S5: Removal and cleaning: When the catheter no longer needs to be fixed or needs to be changed, first turn off the air pump to release the adsorption state, then gently release the clamping jaws and remove the catheter holder.

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