A catheter fixator for gastrointestinal surgery

Abstract

The application belongs to the technical field of medical auxiliary devices, and discloses a catheter fixing device for gastrointestinal surgery, which comprises a patch and a catheter body, and a receiving frame is embedded on the patch, and further comprises a first supporting assembly arranged on the receiving frame. One end of the catheter body is inserted into the patient's body through a body surface incision or a natural cavity, the other end of the catheter body passes through the clamping assembly, the second supporting assembly, the arc-shaped supporting piece and the limiting frame, the initial arc-shaped supporting piece is located at the end of the butt joint piece under the action of the second elastic piece, the middle part of the catheter body is in a snake shape, the buffer space of the catheter body is increased, when the catheter body is pulled, the pulling force is not directly applied to the catheter body in the patient's body, in this process, the adhesive tape and the skin adhesive layer are prevented from being peeled off due to the pulling force, and then the phenomenon of catheter displacement or even complete dislocation is caused, so that the risk of catheter-related complications is reduced.

Description

Technical Field

[0001] This invention belongs to the field of medical auxiliary device technology, specifically a catheter fixator for gastrointestinal surgery. Background Technology

[0002] Gastrointestinal surgery is an important branch of general surgery, focusing on the diagnosis, surgical treatment and comprehensive management of digestive system diseases, covering the entire digestive tract from the esophagus to the anus and related organs (such as parts of the liver, gallbladder, pancreas and spleen); gastrointestinal catheters refer to the use of physical channels to drain gastrointestinal contents (such as pus and digestive juices), maintain postoperative access (such as protection of intestinal anastomosis), provide nutritional support or assist in diagnosis (such as pressure monitoring).

[0003] Currently, one end of a gastrointestinal surgical catheter is inserted into the patient's body through a superficial incision or natural cavity, while the other end is fixed to the patient's skin surface with medical tape to reduce the risk of catheter displacement or dislodgement, while improving patient comfort and ease of medical and nursing procedures. However, the existing fixation method has significant limitations: when the external catheter is accidentally pulled during patient activity or treatment, the catheter tension gradually increases, which can easily cause the tape to peel off from the skin adhesion layer, leading to catheter displacement or even complete dislodgement. Such events not only increase the risk of catheter-related complications (such as infection and anastomotic leakage), but may also aggravate patient suffering and prolong hospitalization due to repeated catheter placement. Therefore, a catheter fixator for gastrointestinal surgery is proposed. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides a catheter fixator for gastrointestinal surgery, which solves the problem that the existing gastrointestinal surgical catheters are fixed with skin adhesive tape, which can reduce displacement, but the tape is easily peeled off by patient movement or traction, causing catheter displacement and dislodgement, increasing the risk of infection, anastomotic leakage and other risks, as well as the burden of repeated catheter placement, affecting treatment efficiency and patient comfort.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gastrointestinal surgical catheter fixator, comprising a dressing and a catheter body, wherein a support frame is embedded in the dressing, and further comprising: A first support component is disposed on the receiving frame; The second support component is disposed on the receiving frame. The first support component and the second support component have the same structure and are arranged in an alternating and symmetrical manner. A limiting frame, which is fixedly mounted on the receiving frame near the end of the first support component; A clamping assembly is disposed on the receiving frame near the end of the second support assembly. The main body of the conduit is serpentine under the action of the clamping assembly, the second support assembly, the first support assembly and the limiting frame. The first support component includes a guide rod fixed on the receiving frame, a guide groove that is vertical to the guide rod on the receiving frame, a docking piece that passes through the guide groove is slidably disposed on the outside of the guide rod, and an arc-shaped support for supporting the main body of the conduit is installed on the top of the docking piece. A second fixing plate is fixedly mounted on the guide rod, and a second docking plate is installed on the side of the docking member. A second elastic member is provided on the side of the second fixing plate to support the second docking plate and the docking member.

[0006] Preferably, the arc-shaped support has a C-shaped cross-section, the inner diameter of the arc-shaped support is larger than the outer diameter of the conduit body, and the clamping assembly, the arc-shaped support, the second support assembly and the limiting frame are kept horizontal.

[0007] Preferably, the top of the receiving frame is provided with guide wheels; Initially, the arc-shaped support is located at the end of the guide rod under the action of the second elastic member. One end of the catheter body is inserted into the patient's body and passes through the clamping assembly, the arc-shaped support, the second support assembly and the limiting frame in sequence, so that the middle part of the catheter body is serpentine.

[0008] Preferably, the clamping assembly includes a clamping seat fixedly mounted on one end of the top of the receiving frame, a mounting mandrel fixedly mounted on the clamping seat, a clamping member mounted on the mounting mandrel, and a mounting groove for placing the conduit body is provided on the clamping seat.

[0009] Preferably, the protruding end of the clamping member contacts the inner wall of the arc-shaped end of the clamping seat; Initially, the clamping member rotates around the mounting mandrel as its central axis to place the catheter body in the mounting groove. Then, by rotating the clamping member in the opposite direction around the mounting mandrel as its central axis, the catheter body is clamped between the clamping seat and the clamping member.

[0010] Preferably, a first transmission wheel is fixedly mounted at the end of the mounting mandrel, and a second transmission wheel and a transmission gear are mounted at the bottom of the receiving frame. The second transmission wheel is connected to the first transmission wheel via a transmission belt.

[0011] Preferably, a first docking plate is movably sleeved on the outside of the guide rod, and a mounting bracket is fixedly installed at the bottom of the first docking plate; The mounting bracket is equipped with a toothed plate that meshes with the transmission gear.

[0012] Preferably, a first fixing plate is fixedly mounted on the guide rod, and a first elastic element is provided on the side of the first fixing plate to support the first docking plate; The conduit body is placed in the mounting groove. The first elastic element supports the first docking plate, the mounting bracket and the toothed plate, and drives the clamping element to rotate around the mounting mandrel as the central axis to clamp the conduit body through the transmission gear, the second transmission wheel and the transmission belt.

[0013] Preferably, a first pad is installed on the side of the mounting bracket, and a second pad that is horizontal with the first pad is fixed on the second mating plate; Initially, the second mating plate and the second pad are located at the end of the guide rod under the action of the second elastic element, and the second pad does not contact the first pad.

[0014] Preferably, the tension at one end of the catheter body gradually increases, and the arc-shaped support, the docking member, the second docking plate and the second pad move along the guide rod toward the first pad. When the second pad contacts the first pad and pushes the first pad and the toothed plate to move synchronously, the clamping member is rotated through the transmission belt and transmission gear to apply a compressive force to the catheter body.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention involves inserting one end of the catheter body into the patient's body through a skin incision or natural cavity, while the other end passes through a clamping assembly, a second support assembly, an arc-shaped support, and a limiting frame. Initially, the arc-shaped support is positioned at the end of the docking member under the action of the second elastic member, making the middle of the catheter body serpentine. When the catheter body is applied to the patient's body, if the end of the catheter body outside the patient's body is accidentally pulled, the tension of the catheter body gradually increases. Due to the serpentine shape of the middle of the catheter body, pulling the arc-shaped support moves along the guide rod towards the second fixing plate through the docking member, compressing the second elastic member. Simultaneously, the second support assembly moves synchronously with the first support assembly, increasing the buffer space for the catheter body when pulled. This prevents the pulling force on the catheter body from directly acting on the catheter body inside the patient's body. During this process, it avoids the adhesion layer of the tape from peeling off, which could lead to catheter displacement or even complete dislodgement, thereby reducing the risk of catheter-related complications.

[0016] This invention involves inserting one end of the catheter body into the patient's body, pushing the clamping member to rotate around the mounting mandrel as the central axis, so that the mounting groove is in an open state. During the rotation of the clamping member, the first transmission wheel drives the transmission belt, the second transmission wheel and the transmission gear to rotate, so that the toothed plate, the mounting bracket and the first docking plate move along the guide rod to stretch the first elastic member. Then the catheter body is placed in the mounting groove. At this time, the clamping member moves in the opposite direction under the action of the first elastic member, clamping the catheter body between the clamping seat and the clamping member, thereby improving the stability of the catheter body placed in the patient's body.

[0017] When one end of the catheter body is subjected to a pulling force, the arc-shaped support moves along the guide rod through the docking member, compressing the second elastic element. As the arc-shaped support continues to be under pressure and moves along the guide rod, the second pad contacts the first pad, pushing the mounting bracket, the first docking plate, and the toothed plate to move along the guide rod and compress the first elastic element. At the same time, during the movement of the toothed plate, the transmission gear and the second transmission wheel rotate, and the mounting mandrel and the clamping member rotate synchronously through the transmission belt to clamp the catheter body located in the mounting groove, further improving the stability of the catheter body and preventing displacement of the catheter body due to the pulling force, which could cause it to detach from the patient's body. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a schematic diagram showing the disassembled structure of the clamping component and the first support component of the present invention; Figure 4 This is a schematic diagram of the external structure of the second support component of the present invention; Figure 5 This is a schematic diagram showing the disassembled structure of the clamping component and the first support component of the present invention; Figure 6 This is a schematic diagram of the mating structure between the clamping component and the catheter body of the present invention; Figure 7 This is a schematic diagram of the external structure of the clamping component of the present invention; Figure 8 This is a schematic diagram of the disassembled structure of the clamping component of the present invention.

[0019] In the diagram: 1. Application; 2. Receiving frame; 3. Clamping assembly; 31. Clamping seat; 32. Clamping element; 33. First transmission wheel; 34. Mounting groove; 35. Mounting mandrel; 311. First fixing plate; 312. First elastic element; 313. First docking plate; 314. Mounting frame; 315. First pad; 316. Second pad; 317. Toothed plate; 318. Transmission gear; 319. Second transmission wheel; 310. Transmission belt; 4. First support assembly; 41. Guide groove; 42. Arc-shaped support element; 43. Docking element; 44. Second docking plate; 45. Second elastic element; 46. Guide rod; 47. Second fixing plate; 48. Guide wheel; 5. Conduit body; 6. Limiting frame; 7. Second support assembly. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1 to 8 As shown, the present invention provides a catheter fixator for gastrointestinal surgery, comprising a dressing 1 and a catheter body 5, wherein a support frame 2 is embedded in the dressing 1, and further comprising: First support component 4, the first support component 4 is disposed on the receiving frame 2; The second support component 7 is disposed on the receiving frame 2. The first support component 4 and the second support component 7 have the same structure and are arranged in an alternating and symmetrical manner. The limiting frame 6 is fixedly mounted on the receiving frame 2 near the end of the first support component 4; Clamping component 3 is disposed on the receiving frame 2 near the end of the second support component 7. The main body of the conduit 5 is serpentine under the action of clamping component 3, second support component 7, first support component 4 and limiting frame 6. The first support component 4 includes a guide rod 46 fixed on the receiving frame 2. The receiving frame 2 has a guide groove 41 that is vertical to the guide rod 46. A docking piece 43 that passes through the guide groove 41 is slidably provided on the outside of the guide rod 46. An arc-shaped support piece 42 for supporting the conduit body 5 is installed on the top of the docking piece 43. A second fixing plate 47 is fixedly mounted on the guide rod 46, a second docking plate 44 is installed on the side of the docking piece 43, and a second elastic member 45 is provided on the side of the second fixing plate 47 to support the second docking plate 44 and the docking piece 43. The arc-shaped support 42 has a C-shaped cross section, and the inner diameter of the arc-shaped support 42 is larger than the outer diameter of the conduit body 5. The clamping assembly 3, the arc-shaped support 42, the second support assembly 7 and the limiting frame 6 are kept horizontal. The top of the receiving frame 2 is equipped with guide wheels 48; The initial arc-shaped support 42 is located at the end of the guide rod 46 under the action of the second elastic member 45. One end of the catheter body 5 is inserted into the patient's body and passes through the clamping assembly 3, the arc-shaped support 42, the second support assembly 7 and the limiting frame 6 in sequence, so that the middle part of the catheter body 5 is serpentine.

[0022] One end of the catheter body 5 is inserted into the patient's body through a skin incision or natural cavity, while the other end passes through the clamping assembly 3, the second support assembly 7, the arc-shaped support 42, and the limiting frame 6. Initially, the arc-shaped support 42 is located at the end of the docking member 43 under the action of the second elastic member 45. Because the second support assembly 7 and the first support assembly 4 have the same structure and are arranged in an alternating symmetrical manner, the middle part of the catheter body 5 is serpentine. When the dressing 1 is pasted on the patient's body, if the catheter body 5 located outside the patient's body is accidentally pulled, the middle part of the catheter body 5 is serpentine, and the catheter body 5 near the patient's incision is clamped by the clamping assembly 3. At this time, the tension of the catheter body 5 gradually increases, pulling the arc-shaped support 42 to move along the guide rod 46 to the second fixing plate 47 through the docking part 43, compressing the second elastic member 45. At the same time, the second support assembly 7 moves synchronously with the first support assembly 4, increasing the buffer space for the catheter body 5 to be pulled, and avoiding the pulling force on the catheter body 5 located in the patient's body when it is pulled. In this process, it avoids the phenomenon of the tape peeling off from the skin adhesion layer due to the pulling force on the catheter body 5, which could lead to catheter displacement or even complete dislodgement, thereby reducing the risk of catheter-related complications such as infection and anastomotic leakage.

[0023] Conversely, if the end of the catheter body 5 is loosened, the connecting piece 43 and the arc-shaped support piece 42 move in opposite directions to reset under the action of the second elastic piece 45, so that the middle part of the catheter body 5 is reset into a serpentine shape.

[0024] like Figure 3 , Figures 5-8 As shown, the clamping assembly 3 includes a clamping seat 31 fixedly mounted on one end of the top of the receiving frame 2, a mounting spindle 35 fixedly mounted on the clamping seat 31, a clamping member 32 mounted on the mounting spindle 35, and a mounting groove 34 for placing the conduit body 5 is provided on the clamping seat 31. The protruding end of the clamping member 32 contacts the inner wall of the arc-shaped end of the clamping seat 31; The initial clamping member 32 rotates around the mounting mandrel 35 as the central axis to place the catheter body 5 in the mounting groove 34. The clamping member 32 rotates in the opposite direction around the mounting mandrel 35 as the central axis to clamp the catheter body 5 between the clamping seat 31 and the clamping member 32. The end of the mounting spindle 35 is fixedly equipped with a first transmission wheel 33, and the bottom of the support frame 2 is equipped with a second transmission wheel 319 and a transmission gear 318. The second transmission wheel 319 is connected to the first transmission wheel 33 through a transmission belt 310. The guide rod 46 is externally fitted with a first docking plate 313, and the bottom of the first docking plate 313 is fixedly fitted with a mounting bracket 314. A toothed plate 317 that meshes with the transmission gear 318 is mounted on the mounting bracket 314; A first fixing plate 311 is fixedly mounted on the guide rod 46, and a first elastic element 312 is provided on the side of the first fixing plate 311 to support the first docking plate 313. The conduit body 5 is placed in the mounting groove 34. The first elastic member 312 supports the first docking plate 313, the mounting bracket 314 and the toothed plate 317, and drives the clamping member 32 to rotate around the mounting mandrel 35 to clamp the conduit body 5 through the transmission gear 318, the second transmission wheel 319 and the transmission belt 310.

[0025] One end of the catheter body 5 is inserted into the patient's body, and the clamping member 32 is pushed to rotate around the mounting mandrel 35 as the central axis, so that the mounting groove 34 is in an open state. During the rotation of the clamping member 32, the first transmission wheel 33 drives the transmission belt 310, the second transmission wheel 319 and the transmission gear 318 to rotate, so that the toothed plate 317, the mounting bracket 314 and the first docking plate 313 move along the guide rod 46 to stretch the first elastic member 312. Then the catheter body 5 is placed in the mounting groove 34. At this time, the clamping member 32 moves in the opposite direction under the action of the first elastic member 312, clamping the catheter body 5 between the clamping seat 31 and the clamping member 32, thereby improving the stability of the catheter body 5 placed in the patient's body.

[0026] like Figure 3 and Figure 5 As shown, a first pad 315 is installed on the side of the mounting bracket 314, and a second pad 316 is fixed on the second mating plate 44 to be horizontal with the first pad 315. Initially, the second mating plate 44 and the second pad 316 are located at the end of the guide rod 46 under the action of the second elastic member 45, and the second pad 316 does not contact the first pad 315; As the tension at one end of the conduit body 5 gradually increases, the arc-shaped support 42, the docking member 43, the second docking plate 44, and the second pad 316 move along the guide rod 46 toward the first pad 315. When the second pad 316 contacts the first pad 315 and pushes the first pad 315 and the toothed plate 317 to move synchronously, the clamping member 32 is rotated through the transmission gear 318 and the transmission belt 310 to apply a compressive force to the conduit body 5.

[0027] The catheter body 5 is sequentially passed through the clamping assembly 3, the arc-shaped support 42, the second support assembly 7, and the limiting frame 6. When one end of the catheter body 5 is subjected to a pulling force, the arc-shaped support 42 is pulled to move along the guide rod 46 through the docking piece 43, compressing the second elastic member 45. As the arc-shaped support 42 continues to be subjected to pressure and moves along the guide rod 46, the second pad 316 contacts the first pad 315, and pushes the mounting frame 314, the first docking plate 313, and the toothed plate 317 to move along the guide rod 46, compressing the first elastic member 312. At the same time, during the movement of the toothed plate 317, the transmission gear 318 and the second transmission wheel 319 rotate, and through the transmission belt 310, the mounting mandrel 35 and the clamping piece 32 rotate synchronously to clamp the catheter body 5 located in the mounting groove 34, further improving the stability of the catheter body 5 and preventing the catheter body 5 from being displaced by the pulling force, which could cause it to detach from the patient's body.

[0028] Working principle and usage process of this invention: One end of the catheter body 5 is inserted into the patient's body, and the clamping member 32 is pushed to rotate around the mounting spindle 35 as the central axis, so that the mounting groove 34 is in an open state. During the rotation of the clamping member 32, the first transmission wheel 33 drives the transmission belt 310, the second transmission wheel 319 and the transmission gear 318 to rotate, so that the toothed plate 317, the mounting bracket 314 and the first docking plate 313 move along the guide rod 46 to stretch the first elastic member 312. Then the catheter body 5 is placed in the mounting groove 34. At this time, the clamping member 32 moves in the opposite direction under the action of the first elastic member 312, clamping the catheter body 5 between the clamping seat 31 and the clamping member 32. The catheter body 5 passes sequentially through the second support assembly 7, the arc-shaped support member 42, and the limiting frame 6. The initial arc-shaped support member 42, under the action of the second elastic member 45, is located at the end of the docking member 43. Because the second support assembly 7 and the first support assembly 4 have the same structure and are arranged in an alternating symmetrical manner, the middle part of the catheter body 5 is serpentine. When the dressing 1 is pasted onto the patient's body, if the catheter body 5 located at the external end of the patient's body is accidentally pulled, the serpentine shape of the middle part of the catheter body 5, and the catheter body 5 near the patient's incision, is clamped by the clamping assembly 3. As the tension of the catheter body 5 gradually increases, it pulls the arc-shaped support 42 to move along the guide rod 46 to the second fixing plate 47 through the docking part 43, compressing the second elastic member 45. At the same time, the second support assembly 7 moves synchronously with the first support assembly 4, increasing the buffer space for the catheter body 5 to be pulled, and avoiding the pulling force on the catheter body 5 located in the patient's body when it is pulled. In this process, it avoids the phenomenon that the tape and skin adhesion layer of the catheter body 5 are peeled off due to the pulling force, which in turn causes the catheter to shift or even completely fall out. As the arc-shaped support 42 continues to move along the guide rod 46 under pressure, the second pad 316 contacts the first pad 315, pushing the mounting bracket 314, the first docking plate 313, and the toothed plate 317 to move along the guide rod 46 and compress the first elastic member 312. At the same time, during the movement of the toothed plate 317, the transmission gear 318 and the second transmission wheel 319 rotate, and through the transmission belt 310, the mounting spindle 35 and the clamping member 32 rotate synchronously to clamp the catheter body 5 located in the mounting groove 34, further improving the stability of the catheter body 5 and preventing the catheter body 5 from being displaced by the pulling force, which could cause it to detach from the patient's body.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A catheter fixation device for gastrointestinal surgery, comprising a dressing (1) and a catheter body (5), wherein a support frame (2) is embedded in the dressing (1), characterized in that, Also includes: The first support component (4) is disposed on the support frame (2); The second support component (7) is disposed on the receiving frame (2). The first support component (4) and the second support component (7) have the same structure and are arranged in an alternating symmetrical manner. A limiting frame (6) is fixedly mounted on the receiving frame (2) near the end of the first support component (4); Clamping assembly (3), the clamping assembly (3) is disposed on the receiving frame (2) near the end of the second support assembly (7), the conduit body (5) is serpentine under the action of clamping assembly (3), second support assembly (7), first support assembly (4) and limiting frame (6); The first support assembly (4) includes a guide rod (46) fixed on the receiving frame (2). The receiving frame (2) has a guide groove (41) that is vertical to the guide rod (46). A docking part (43) that passes through the guide groove (41) is slidably provided on the outside of the guide rod (46). An arc-shaped support (42) for supporting the conduit body (5) is installed on the top of the docking part (43). A second fixing plate (47) is fixedly mounted on the guide rod (46), and a second docking plate (44) is installed on the side of the docking member (43). A second elastic member (45) is provided on the side of the second fixing plate (47) to support the second docking plate (44) and the docking member (43).

2. The gastrointestinal surgical catheter fixator according to claim 1, characterized in that: The arc-shaped support (42) has a C-shaped cross section. The inner diameter of the arc-shaped support (42) is larger than the outer diameter of the conduit body (5). The clamping assembly (3), the arc-shaped support (42), the second support assembly (7), and the limiting frame (6) remain horizontal.

3. The gastrointestinal surgical catheter fixator according to claim 1, characterized in that: The top of the receiving frame (2) is provided with guide wheels (48). Initially, the arc-shaped support (42) is located at the end of the guide rod (46) under the action of the second elastic member (45). One end of the catheter body (5) is inserted into the patient's body and passes through the clamping assembly (3), the arc-shaped support (42), the second support assembly (7) and the limiting frame (6) in sequence, so that the middle part of the catheter body (5) is serpentine.

4. The gastrointestinal surgical catheter fixator according to claim 1, characterized in that: The clamping assembly (3) includes a clamping seat (31) fixedly mounted on one end of the top of the receiving frame (2), a mounting spindle (35) fixedly mounted on the clamping seat (31), a clamping member (32) mounted on the mounting spindle (35), and an installation groove (34) for placing the conduit body (5) is provided on the clamping seat (31).

5. The gastrointestinal surgical catheter fixator according to claim 4, characterized in that: The protruding end of the clamping member (32) contacts the inner wall of the arc-shaped end of the clamping seat (31); Initially, the clamping member (32) rotates around the mounting mandrel (35) as the central axis, placing the catheter body (5) in the mounting groove (34). The clamping member (32) rotates in the opposite direction around the mounting mandrel (35) as the central axis, clamping the catheter body (5) between the clamping seat (31) and the clamping member (32).

6. The gastrointestinal surgical catheter fixator according to claim 4, characterized in that: The end of the mounting spindle (35) is fixedly equipped with a first transmission wheel (33), and the bottom of the support frame (2) is equipped with a second transmission wheel (319) and a transmission gear (318). The second transmission wheel (319) is connected to the first transmission wheel (33) through a transmission belt (310).

7. The gastrointestinal surgical catheter fixator according to claim 6, characterized in that: The guide rod (46) is externally fitted with a first docking plate (313), and the bottom of the first docking plate (313) is fixedly fitted with a mounting bracket (314). The mounting bracket (314) is equipped with a toothed plate (317) that meshes with the transmission gear (318).

8. The gastrointestinal surgical catheter fixator according to claim 7, characterized in that: A first fixing plate (311) is fixedly mounted on the guide rod (46), and a first elastic element (312) is provided on the side of the first fixing plate (311) to support the first docking plate (313). The catheter body (5) is placed in the mounting groove (34). The first elastic member (312) supports the first docking plate (313), the mounting bracket (314) and the toothed plate (317), and drives the clamping member (32) to rotate around the mounting mandrel (35) to clamp the catheter body (5) through the transmission gear (318), the second transmission wheel (319) and the transmission belt (310).

9. The gastrointestinal surgical catheter fixator according to claim 7, characterized in that: The mounting bracket (314) is equipped with a first pad (315) on its side, and a second pad (316) is fixed on the second docking plate (44) to be level with the first pad (315). Initially, the second docking plate (44) and the second pad (316) are located at the end of the guide rod (46) under the action of the second elastic member (45), and the second pad (316) does not contact the first pad (315).

10. The gastrointestinal surgical catheter fixator according to claim 9, characterized in that: One end of the catheter body (5) is gradually pulled by the tension. The arc-shaped support (42), the docking member (43), the second docking plate (44) and the second pad (316) move along the guide rod (46) toward the first pad (315). When the second pad (316) contacts the first pad (315) and pushes the first pad (315) and the toothed plate (317) to move synchronously, the clamping member (32) is driven to rotate through the transmission gear (318) and the transmission belt (310) to apply a squeezing force to the catheter body (5).

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