A peritoneal dialysis catheter fixator and fixing method

Abstract

The application provides a peritoneal dialysis catheter fixing device and fixing method, and belongs to the technical field of medical devices. The fixing device comprises a fixing device body, the fixing device body comprises a placement plate in contact with the abdomen, a notch is arranged on the placement plate, a guide structure connected with the placement plate and used for guiding the insertion of the peritoneal dialysis catheter is arranged in the notch, a locking structure used for locking the peritoneal dialysis catheter is further arranged in the guide structure, a connecting ring corresponding to the guide structure and rotating along the surface of the placement plate is arranged on the placement plate, a groove corresponding to the peritoneal dialysis catheter is arranged on the outer portion of the connecting ring, a limiting structure used for assisting in limiting the peritoneal dialysis catheter is arranged in the groove, one side of the placement plate is provided with a connecting belt connected with the placement plate, and the other side of the placement plate is provided with a fixing belt corresponding to the connecting belt and used for locking the connecting belt.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a peritoneal dialysis catheter fixation device and fixation method. Background Technology

[0002] Medical equipment is the most basic element of medical, scientific research, teaching, institutional and clinical work. It includes both professional medical equipment and home medical equipment. Medical equipment is the basic condition for continuously improving the level of medical science and technology and is also an important indicator of modernization. The most popular classification method for medical equipment is three categories: diagnostic equipment, treatment equipment and auxiliary equipment.

[0003] Peritoneal dialysis is an important component of renal replacement therapy for end-stage renal disease. Peritoneal dialysis catheter placement involves determining three locations. The first location is the surgical incision site. The incision is made through the rectus abdominis muscle, 12 cm upwards from the upper edge of the pubic symphysis, and then 2-3 cm laterally. This point is where the peritoneal dialysis catheter enters the abdominal cavity. After placement, the distal end of the peritoneal dialysis catheter is located 1-2 cm above the lowest point of the rectouterine pouch or uterine pouch. The surgical incision length is generally 2-5 cm. The second location is the external exit point of the peritoneal dialysis catheter. The entry point of the peritoneal dialysis catheter is used as a landmark. The external exit point is located 30-45 degrees lateral and superior to this point, 2 cm from the exit point.

[0004] During peritoneal dialysis catheter insertion surgery, the peritoneal dialysis catheter needs to be fixed. Common fixation methods include using adhesive tape or other auxiliary fixation methods, or using external structures for fixation. However, using adhesive tape or other auxiliary fixation methods can easily lead to movement or migration of the peritoneal dialysis catheter due to factors such as touching and pulling, causing pain to the patient and hindering subsequent treatment. Furthermore, when using external structures, it is necessary to consider whether the installation position is suitable for the patient. Therefore, this paper proposes a peritoneal dialysis catheter fixation device and method that provides auxiliary guiding support on the basis of the original fixation, improves the stability of the fixation, is easy to install, has a high stability effect, and has strong applicability. Summary of the Invention

[0005] The technical problem this invention aims to solve is to provide a peritoneal dialysis catheter fixation device and method. By incorporating a guide structure, locking structure, connecting ring, and limiting structure, the device ensures the peritoneal dialysis catheter is unlikely to deviate and also secures it, preventing movement or migration due to contact during later use, thus avoiding patient discomfort and facilitating subsequent treatment. The placement plate, connecting strap, and fixing strap are used to fix the placement plate in a suitable position on the patient's abdomen, greatly improving the fixation of the device and preventing dislodgement due to external pulling or patient body rotation, further facilitating subsequent treatment. It is also easy to install and highly applicable. The rubber balloon, ventilation channel, and air vent prevent discomfort caused by poor air circulation between the placement plate and the patient's abdomen, reducing patient resistance and facilitating subsequent treatment.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A peritoneal dialysis catheter fixation device includes a fixation body, which includes a placement plate that contacts the abdomen. The placement plate has a notch, and within the notch is a guide structure connected to the placement plate for guiding the insertion of the peritoneal dialysis catheter. The guide structure also includes a locking structure for locking the peritoneal dialysis catheter. The placement plate has a connecting ring corresponding to the guide structure and rotating along the surface of the placement plate. The outer side of the connecting ring has a groove corresponding to the peritoneal dialysis catheter, and the groove contains a limiting structure for auxiliary positioning of the peritoneal dialysis catheter. One side of the placement plate has a connecting strap connected to the placement plate, and the other side of the placement plate has a fixing strap corresponding to the connecting strap and used to lock the connecting strap. The connecting ring rotates along the surface of the placement plate via a damping pivot.

[0008] Preferably, the guide structure includes a connecting pipe A connected to the notch, and the upper end of the connecting pipe A is provided with a connecting pipe B connected to the connecting pipe A, and a bend is provided between the connecting pipe A and the connecting pipe B.

[0009] Preferably, the included angle between the connecting pipe A and the placement plate is in the range of 30° to 90°, and the included angle between the connecting pipe A and the connecting pipe B formed by the bend is in the range of 45° to 110°.

[0010] Preferably, the locking structure is respectively disposed in connecting pipe A and connecting pipe B. The locking structure includes a guide screw extending into connecting pipe A or connecting pipe B. The lowermost end of the guide screw is provided with an abutment A that moves up and down along the guide screw. The guide screw is provided with a guide sleeve that is loosely fitted with the guide screw, and the outside of the guide sleeve is provided with an active rod that is bearing-connected to the guide sleeve. The end of the active rod is connected to a driven rod through a connecting shaft, and the end of the driven rod is provided with an abutment B connected to the driven rod.

[0011] Preferably, the guide screw is provided with a guide sleeve rod connected to the guide screw, and the guide sleeve rod is used to adjust the up and down movement of the contact member A. The contact member A is a movable disk, and the surface of the movable disk is provided with multiple inwardly recessed grooves, which are adapted to the peritoneal dialysis catheter. The included angle between two spaced grooves is an obtuse angle. The contact member A and the contact member B have the same structure. The active rod is symmetrically arranged on both sides of the guide sleeve. The connecting shaft is arranged in the side wall of the connecting tube A. The connecting tube A or the connecting tube B is respectively provided with a limiting member A for limiting the movement of the guide screw. The outside of the guide screw is provided with a limiting member B for limiting the up and down movement of the guide sleeve rod. The cross-sectional shape of the active rod and the cross-sectional shape of the driven rod are both arc-shaped, and the included angle between the active rod and the driven rod is in the range of 90° to 150°. The guide screw is provided with a limiting ring for limiting the guide sleeve, and the limiting ring is symmetrically arranged above and below the guide sleeve.

[0012] Preferably, the limiting structure includes a telescopic sleeve A symmetrically arranged in the groove, and a telescopic sleeve B that slides along the surface of the connecting ring is provided outside the telescopic sleeve A, and the telescopic sleeve B is symmetrically arranged in the groove.

[0013] Preferably, the telescopic sleeve A and the telescopic sleeve B have the same structure but opposite directions. The telescopic sleeve A is provided with an abutting spring for resisting the telescopic sleeve A's extension and return. The uppermost end of the telescopic sleeve A is provided with an inwardly inclined arc-shaped surface. The groove is provided with a return spring connected to the telescopic sleeve B and elastically returning. The cross-sectional shape of the groove is similar to "]". The groove is provided with multiple limiting structures arranged in a ring.

[0014] Preferably, the fixing belt is provided with a limiting box corresponding to the connecting belt on the outside, the limiting box is provided with a clamping plate assembly adapted to the limiting box and the clamping plate assembly is corresponding to the connecting belt, and the limiting box is provided with a plurality of locking nuts for locking the clamping plate assembly on the outside.

[0015] Preferably, the lowest end of the limiting box is provided with a protrusion for limiting the clamping plate assembly. The clamping plate assembly includes plate A and plate B, which are connected by a guide rod and have a gap between them. The length of the connecting strap is greater than the length of the fixing strap. The lower end of the placement plate is provided with a rubber airbag, and the outside of the placement plate is provided with a one-way air inlet valve connected to the rubber airbag. The outside of the placement plate is provided with a one-way air outlet valve connected to the rubber airbag. The placement plate has a communicating ventilation channel, and the ventilation channel has multiple air outlets extending downward to the outside of the rubber airbag.

[0016] Preferably, the method for fixing the peritoneal dialysis catheter fixator includes:

[0017] Step 1: Pre-treatment procedures such as disinfection of the patient's abdomen are required;

[0018] Step 2: Next, place the fixation device in a suitable position on the patient's abdomen and move the connecting strap along the bottom of the patient's body. Do not fix the connecting strap in the fixation strap at this time.

[0019] Step 3: Next, make a surgical incision in the patient's abdomen and cut open the skin and subcutaneous tissue. Then, sew up a purse and make a coil suitable for peritoneal dialysis catheter placement in the purse using surgical needles and sutures. Do not tighten the surgical needles and sutures at this time.

[0020] Step 4: Before inserting the peritoneal dialysis catheter into the patient's abdomen, a portion of the peritoneal dialysis catheter needs to be pre-set and installed in the groove of the connecting ring. Then, the peritoneal dialysis catheter is assisted in being positioned by the limiting structure. After that, the portion of the peritoneal dialysis catheter is inserted along the guide structure, ensuring that it does not contact the guide structure during insertion. Once the peritoneal dialysis catheter has been inserted to the appropriate length;

[0021] Step 5: Place the peritoneal dialysis catheter of appropriate length into the coil in the patient's abdomen. At this time, tighten the surgical sutures and tighten the purse-string suture. Then, suture the subcutaneous tissue and skin of the patient's abdomen in sequence to initially fix the peritoneal dialysis catheter.

[0022] Step Six: After initial fixation, the peritoneal dialysis catheter in the guide structure is locked and fixed using the locking structure in the guide structure;

[0023] Step 7: Finally, secure the connecting strap with the fixing strap.

[0024] Peritoneal dialysis catheters can be made of polyurethane, which has good oil resistance, toughness, wear resistance, aging resistance and adhesion.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] In the above scheme, by setting up a guide structure, locking structure, connecting ring, and limiting structure, a portion of the peritoneal dialysis catheter needs to be reserved before insertion. This portion of the peritoneal dialysis catheter is then laid along the groove in the connecting ring, and the limiting structure locks the peritoneal dialysis catheter within the groove. Next, the end of the peritoneal dialysis catheter is inserted along the guide structure, ensuring that the catheter is inserted without contact with the guide structure, thus facilitating subsequent insertion. After insertion, the locking structure in the guide structure locks and fixes the peritoneal dialysis catheter, ensuring that it is unlikely to deflect after insertion and also fixing it in place to prevent movement or migration of the catheter due to contact or other factors during later use, thereby avoiding patient discomfort and facilitating subsequent treatment.

[0027] By using a combination of a placement plate, connecting straps, and fixing straps, the placement plate is positioned appropriately on the patient's abdomen before intubation. The connecting strap is then threaded through the patient's lower body, and then through the limiting box in the fixing strap. The connecting strap is then threaded through the gap between the splints. Finally, the splint assembly is placed into the limiting box and locked in place with a locking nut. This secures the placement plate to the patient's abdomen, significantly improving the fixation of the device and preventing it from dislodging due to external pulling or patient body rotation. This facilitates subsequent treatment, and the device is easy to install and highly adaptable.

[0028] By incorporating structures such as rubber airbags, ventilation channels, and vents, the placement plate, once installed in a suitable position on the patient's abdomen, can alleviate the pressure on the abdomen caused by a rigid placement plate or tight binding of the connecting and fixing straps. Furthermore, the ventilation channels and vents improve the comfort of the placement plate when it fits the patient's abdomen, preventing discomfort caused by poor air circulation between the placement plate and the patient's abdomen. This reduces patient resistance to some extent and facilitates subsequent treatment.

[0029] In summary, this invention has the advantages of preventing peritoneal dialysis catheter movement or migration due to factors such as touching during later use, thereby avoiding pain to the patient, improving the stability of fixation, and being easy to install, with high stability and strong applicability. Attached Figure Description

[0030] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the guiding structure of the present invention;

[0033] Figure 3 For the present invention Figure 1 A cross-sectional structural diagram;

[0034] Figure 4 For the present invention Figure 1 A magnified structural diagram of part A in the middle;

[0035] Figure 5 for Figure 3 A cross-sectional structural diagram of the telescopic sleeve A of the middle limiting structure;

[0036] Figure 6 This is a schematic diagram of the locking structure in the connecting pipe A of the present invention;

[0037] Figure 7 for Figure 5 A magnified structural diagram of section B in the middle;

[0038] Figure 8 This is a schematic diagram of the internal structure of the limiting box on the outside of the fixing belt of the present invention.

[0039] [Figure Labels]

[0040] 1. Placement plate; 2. Notch; 3. Guide structure; 4. Connecting ring; 5. Groove; 6. Limiting structure; 7. Connecting band; 8. Fixing band; 9. Connecting tube A; 10. Connecting tube B; 11. Bend; 12. Locking structure; 13. Guide screw; 14. Guide sleeve; 15. Abutting element A; 16. Driving rod; 17. Driven rod; 18. Abutting element B; 19. Guide sleeve rod; 20. Inner groove; 21. Limiting element A; 22. Limiting element B; 23. Arc-shaped surface; 24. Return spring; 25. Limiting ring; 26. Limiting box; 27. Clamping plate assembly; 28. Locking nut; 29. ​​Protrusion; 30. Plate A; 31. Plate B; 32. Guide rod; 33. Abutment spring; 34. Rubber airbag; 35. One-way air inlet valve; 36. Ventilation channel; 37. Air outlet; 38. Fixing body; 39. Movable plate; 40. Connecting shaft; 41. Telescopic sleeve plate A; 42. Telescopic sleeve plate B.

[0041] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0042] The peritoneal dialysis catheter fixation device and fixation method provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0043] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0044] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0045] It is understood that the meanings of “on”, “above” and “above” in this disclosure should be interpreted in the broadest sense, such that “on” means not only “directly on” something, but also includes something with an intermediary feature or layer, and that “above” or “above” means not only “on” something, but also includes something “above” or “above” without an intermediary feature or layer.

[0046] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0047] like Figures 1 to 8 As shown, an embodiment of the present invention provides a peritoneal dialysis catheter fixation device, including a fixation body 38. The fixation body 38 includes a placement plate 1 that contacts the abdomen. The placement plate 1 has a notch 2. The notch 2 has a guide structure 3 connected to the placement plate 1 and used to guide the insertion of the peritoneal dialysis catheter. The guide structure 3 also has a locking structure 12 for locking the peritoneal dialysis catheter. The placement plate 1 has a connecting ring 4 corresponding to the guide structure 3 and rotating along the surface of the placement plate 1. The outside of the connecting ring 4 has a groove 5 corresponding to the peritoneal dialysis catheter, and the groove 5 has a limiting structure 6 for auxiliary limiting of the peritoneal dialysis catheter. One side of the placement plate 1 has a connecting strap 7 connected to the placement plate 1, and the other side of the placement plate 1 has a fixing strap 8 corresponding to the connecting strap 7 and used to lock the connecting strap 7.

[0048] Through the coordination of the above structures, the connecting ring 4 is used to place part of the peritoneal dialysis catheter in the groove 5 of the connecting ring 4, and the limiting structure 6 limits the peritoneal dialysis catheter. When the peritoneal dialysis catheter in the groove 5 is pulled, causing the peritoneal dialysis catheter to move outward, it drives the telescopic sleeve B42 in the limiting structure 6 to move towards the telescopic sleeve A41 until it contacts the telescopic sleeve A41. Thus, when the pulling force reaches a certain value, the peritoneal dialysis catheter is pulled outward, moving out along the arc surface 23 on the telescopic sleeve B42. The multiple limiting structures 6 provide a buffering effect when the peritoneal dialysis catheter is pulled, thereby preventing excessive pulling force. To prevent the peritoneal dialysis catheter from bending, when it needs to be installed in the limiting structure 6, it can simply be inserted along the arc-shaped surface 23 of the telescopic sleeve B41 to fix the peritoneal dialysis catheter. Then, when the peritoneal dialysis catheter is inserted along the guide structure 3 and extended to a certain length, it is used for subsequent catheter insertion operations. When the peritoneal dialysis catheter is inserted into the guide structure 3, the locking structure 12 is used to lock and fix the peritoneal dialysis catheter in the guide structure 3, which further buffers the peritoneal dialysis catheter in the connecting ring 4 if it is pulled too far and falls off completely, thus avoiding movement or free movement of the peritoneal dialysis catheter and avoiding pain to the patient.

[0049] like Figure 2 As shown, in this embodiment, the guide structure 3 includes a connecting tube A9 connected to the notch 2. The upper end of the connecting tube A9 is provided with a connecting tube B10 connected to the connecting tube A9. A bend 11 is provided between the connecting tube A9 and the connecting tube B10. The angle between the connecting tube A9 and the placement plate 1 ranges from 30° to 90°. The angle between the connecting tube A9 and the placement plate 1 can be set according to the angle during insertion to avoid large bends in the peritoneal dialysis catheter. The angle between the connecting tube A9 and the placement plate 1 can be set to 45°. The angle between the connecting tube A9 and the connecting tube B10 formed by the bend 11 ranges from 45° to 110°. The angle between the connecting tube A9 and the connecting tube B10 can be set according to the angle during insertion to avoid large bends in the peritoneal dialysis catheter. The angle between the connecting tube A9 and the connecting tube B10 can be set to 100°.

[0050] With the cooperation of the guide structure 3 and other structures, the angle between the connecting tube A9 and the connecting tube B10 can be adjusted by the bending part 11 before inserting the peritoneal dialysis catheter, so as to make it suitable for the insertion angle and avoid bending of the peritoneal dialysis catheter during insertion, which would affect the subsequent operation.

[0051] like Figure 2 , Figure 6 and Figure 7 As shown, in this embodiment, the locking structure 12 is respectively disposed in the connecting pipe A9 and the connecting pipe B10. The locking structure 12 includes a guide screw 13 extending into the connecting pipe A9 or the connecting pipe B10. The lowermost end of the guide screw 13 is provided with an abutment A15 that moves up and down along the guide screw 13. The guide screw 13 is provided with a guide sleeve 14 that is loosely fitted with the guide screw 13, and the outside of the guide sleeve 14 is provided with a drive rod 16 that is bearing-connected to the guide sleeve 14. The end of the drive rod 16 is connected to a driven rod 17 through a connecting shaft 40, and the end of the driven rod 17 is provided with an abutment B18 connected to the driven rod 17. The guide screw 13 is provided with a guide sleeve rod 19 connected to the guide screw 13, and the guide sleeve rod 19 is used to adjust the up and down movement of the abutment A15. The abutment A15 is a movable disk 39, and the surface of the movable disk 39 is provided with multiple The inner groove 20 is recessed inward and is adapted to the peritoneal dialysis catheter. The included angle between two spaced inner grooves 20 is an obtuse angle. The contact member A15 and the contact member B18 have the same structure. The active rod 16 is symmetrically arranged on both sides of the guide sleeve 14. The connecting shaft 40 is arranged in the side wall of the connecting tube A9. The connecting tube A9 or the connecting tube B10 is respectively provided with a limiting member A21 for limiting the movement of the guide screw 13. The outside of the guide screw 13 is provided with a limiting member B22 for limiting the up and down movement of the guide sleeve rod 19. The cross-sectional shape of the active rod 16 and the cross-sectional shape of the driven rod 17 are both arc-shaped, and the included angle between the active rod 16 and the driven rod 17 is in the range of 90° to 150°. The guide screw 13 is provided with a limiting ring 25 for limiting the guide sleeve 14, and the limiting ring 25 is symmetrically arranged above and below the guide sleeve 14.

[0052] Through the cooperation of the guide structure 3 and the locking structure 12, after the peritoneal dialysis catheter is inserted into the guide structure 3, it is locked and fixed by the locking structure 12 in the connecting tube A9 and the connecting tube B10. During fixing, the guide screw 13 is moved upward, which drives the active rod 16 to move upward. As the active rod 16 moves upward, the lowest end of the driven rod 17 moves upward, so that the contact piece B18 at the end of the driven rod 17 abuts against the surface of the peritoneal dialysis catheter. The driven rod 17 is provided with two... This causes the two driven rods 17 to contact the surface of the peritoneal dialysis catheter with the contacting elements B18. At the same time, the guide sleeve 19 drives the contacting element A15 to move downward, causing the contacting element A15 to contact the surface of the peritoneal dialysis catheter. This creates a triangular space between the contacting element A15 and the two contacting elements B18, which can fix the peritoneal dialysis catheter. The locking structures 12 provided in the connecting tube A9 and the connecting tube B10 respectively are used to improve the fixation strength and prevent the peritoneal dialysis catheter from moving or becoming loose after insertion, thereby improving the stability of the fixation.

[0053] like Figure 3 and Figure 4 and Figure 5 As shown, in this embodiment, the limiting structure 6 includes a telescopic sleeve A41 symmetrically arranged in the groove 5. A telescopic sleeve B42, which slides along the surface of the connecting ring 4, is provided outside the telescopic sleeve A41 and is symmetrically arranged in the groove 5. The telescopic sleeve A41 and telescopic sleeve B42 have the same structure but opposite directions. An abutment spring 33 is provided in the telescopic sleeve A41 to abut against the telescopic sleeve A41's return. The uppermost end of the telescopic sleeve A41 has an inwardly inclined arc-shaped surface 23. A return spring 24, connected to the telescopic sleeve B42 and elastically returning, is provided in the groove 5. The cross-sectional shape of the groove 5 is similar to a "]". Multiple limiting structures 6 arranged in a ring are provided in the groove 5.

[0054] Through the cooperation of the connecting ring 4 and the limiting structure 6, part of the peritoneal dialysis catheter is arranged along the groove 5 in the connecting ring 4. Then, it is limited by the limiting structure 6. When the peritoneal dialysis catheter is placed in the groove 5, it first contacts the telescopic sleeve A41 in the limiting structure 6. At this time, pressure is continued to be applied, so that after the peritoneal dialysis catheter enters, it pushes the telescopic sleeve A41 downward, thereby moving the peritoneal dialysis catheter into the groove 5. Then, the peritoneal dialysis catheter can be pressed into the telescopic sleeve B42. The telescopic sleeve B42, which is set at both the top and bottom, limits the peritoneal dialysis catheter. When it is pulled by the outside, the peritoneal dialysis catheter moves out along the arc surface 23 in the telescopic sleeve B42. When it moves out, it can offset a certain pulling force, thereby preventing the peritoneal dialysis catheter from bending when subjected to pulling force, thus facilitating the subsequent use of the peritoneal dialysis catheter.

[0055] like Figure 1 and Figure 3 As shown, in this embodiment, the fixing strap 8 is provided with a limiting box 26 corresponding to the connecting strap 7 on its outside. The limiting box 26 is provided with a clamping plate assembly 27 adapted to the limiting box 26 and the clamping plate assembly 27 corresponds to the connecting strap 7. The limiting box 26 is provided with a plurality of locking nuts 28 for locking the clamping plate assembly 27 on its outside. The lowermost end of the limiting box 26 is provided with a protrusion 29 for limiting the clamping plate assembly 27. The clamping plate assembly 27 includes plate A 30 and plate B 31. Plate A 30 and plate B 31 The plates 31 are connected by guide rods 32 and there is a gap between plate A 30 and plate B 31. The length of the connecting strap 7 is greater than the length of the fixing strap 8. The lower end of the placement plate 1 is provided with a rubber airbag 34 and the outside of the placement plate 1 is provided with a one-way air inlet valve 35 connected to the rubber airbag 34. The outside of the placement plate 1 is provided with a one-way air outlet valve connected to the rubber airbag 34. The placement plate 1 is provided with a ventilation channel 36 and the ventilation channel 36 is provided with a plurality of air outlet holes 37 extending downward to the outside of the rubber airbag 34.

[0056] With the cooperation of the fixing strap 8 and connecting strap 7, before the intubation operation, the placement plate 1 needs to be placed in a suitable position on the patient's abdomen. Then, the connecting strap 7 is passed through the lower part of the patient's body, and then through the limiting box 26 in the fixing strap 8. After that, the connecting strap 7 is passed through the gap between the splints 27. Finally, the splints 27 are placed into the limiting box 26 and locked and fixed with the locking nut 28. This fixes the placement plate 1 in a suitable position on the patient's abdomen, thus preventing the placement plate 1 from falling off due to external pulling. This greatly improves the fixation of the fixator body 38 and prevents it from falling off due to external pulling or the patient's body rotation, thus facilitating subsequent treatment. It is also easy to install and has strong applicability.

[0057] like Figures 1 to 8 As shown, the method for fixing the peritoneal dialysis catheter includes:

[0058] Step 1: Pre-treatment procedures such as disinfection of the patient's abdomen are required;

[0059] Step 2: Next, place the fixation body 38 in a suitable position on the patient's abdomen and move the connecting strap 7 along the lower part of the patient's body. At this time, do not fix the connecting strap 7 in the fixation strap 8.

[0060] Step 3: Next, make a surgical incision in the patient's abdomen and cut open the skin and subcutaneous tissue. Then, sew up a purse and make a coil suitable for peritoneal dialysis catheter placement in the purse using surgical needles and sutures. Do not tighten the surgical needles and sutures at this time.

[0061] Step 4: Before inserting the peritoneal dialysis catheter into the patient's abdomen, an extra portion of the peritoneal dialysis catheter needs to be pre-set and installed in the groove 5 of the connecting ring 4. Then, the peritoneal dialysis catheter is assisted in being limited by the limiting structure 6. After that, the peritoneal dialysis catheter is inserted along the guide structure 3. During insertion, it is necessary to insert without contact with the guide structure 3. After inserting the peritoneal dialysis catheter to the appropriate length;

[0062] Step 5: Place the peritoneal dialysis catheter of appropriate length into the coil in the patient's abdomen. At this time, tighten the surgical sutures and tighten the purse-string suture. Then, suture the subcutaneous tissue and skin of the patient's abdomen in sequence to initially fix the peritoneal dialysis catheter.

[0063] Step 6: After initial fixation, the peritoneal dialysis catheter in the guide structure 3 is locked and fixed by the locking structure 12 in the guide structure 3.

[0064] Step 7: Finally, secure the connecting strap 7 with the fixing strap 8.

[0065] The technical solution provided by this invention, through the coordination of a guide structure, a locking structure, a connecting ring, and a limiting structure, requires the pre-reservation of a portion of the peritoneal dialysis catheter before insertion. This portion of the catheter is then laid along the groove in the connecting ring, and the limiting structure locks the catheter within the groove. Next, the end of the catheter is inserted along the guide structure, ensuring that the catheter is inserted without contact with the guide structure, facilitating subsequent insertion. After insertion, the locking structure in the guide structure locks and secures the catheter. This ensures that the catheter is unlikely to deflect after insertion and also secures it, preventing movement or migration due to contact during later use, thus avoiding patient discomfort and facilitating subsequent treatment.

[0066] Subsequently, through the coordinated arrangement of structures such as the placement plate, connecting strap, and fixing strap, before intubation, the placement plate needs to be placed in a suitable position on the patient's abdomen. Then, the connecting strap is passed through the lower part of the patient's body, and after passing through, it passes through the limiting box in the fixing strap. Then, the connecting strap is passed through the gap between the splints. Finally, the splints are placed into the limiting box and locked in place with the locking nut, thereby fixing the placement plate in a suitable position on the patient's abdomen. This greatly improves the fixation of the fixator body and prevents it from falling off due to external pulling or the patient's body rotation, thus facilitating subsequent treatment. It is also easy to install and has strong applicability.

[0067] Subsequently, by incorporating structures such as rubber airbags, ventilation channels, and air vents, the placement plate can alleviate the pressure on the patient's abdomen caused by a rigid placement plate or tight binding of the connecting and fixing straps after being installed in a suitable position. Furthermore, the ventilation channels and air vents can improve the comfort of the placement plate when it fits the patient's abdomen, preventing discomfort caused by poor air circulation between the placement plate and the patient's abdomen. This reduces the patient's resistance to some extent and facilitates subsequent treatment.

[0068] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0069] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc.

[0070] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A peritoneal dialysis catheter fixation device, comprising a fixation body, the fixation body including a placement plate that contacts the abdomen, characterized in that, The placement plate has a notch, in which a guide structure connected to the placement plate and used to guide the insertion of the peritoneal dialysis catheter is provided. The guide structure also has a locking structure for locking the peritoneal dialysis catheter. The placement plate has a connecting ring corresponding to the guide structure and rotating along the surface of the placement plate. The outside of the connecting ring has a groove corresponding to the peritoneal dialysis catheter, and the groove has a limiting structure for auxiliary limiting of the peritoneal dialysis catheter. One side of the placement plate has a connecting strap connected to the placement plate, and the other side of the placement plate has a fixing strap corresponding to the connecting strap and used to lock the connecting strap. The guide structure includes a connecting pipe A connected to the notch, and a connecting pipe B connected to the upper end of the connecting pipe A. A bend is provided between the connecting pipe A and the connecting pipe B. The locking structures are respectively installed in connecting pipe A and connecting pipe B. The locking structure includes a guide screw extending into connecting pipe A or connecting pipe B. The lowest end of the guide screw is provided with an abutment A that moves up and down along the guide screw. The guide screw is provided with a guide sleeve that is loosely fitted with the guide screw, and the outside of the guide sleeve is provided with an active rod that is bearing-connected to the guide sleeve. The end of the active rod is connected to a driven rod through a connecting shaft, and the end of the driven rod is provided with an abutment B connected to the driven rod. The limiting structure includes a telescopic sleeve A symmetrically arranged in the groove, and a telescopic sleeve B that slides along the surface of the connecting ring is provided outside the telescopic sleeve A, and the telescopic sleeve B is symmetrically arranged in the groove. The telescopic sleeve A and the telescopic sleeve B have the same structure but opposite directions. The telescopic sleeve A is provided with an abutting spring for resisting the telescopic sleeve A's extension and return. The uppermost end of the telescopic sleeve A is provided with an inwardly inclined arc-shaped surface. The groove is provided with a return spring connected to the telescopic sleeve B and elastically returning. The cross-sectional shape of the groove is similar to "]". The groove is provided with multiple limiting structures arranged in a ring. The guide screw is provided with a guide sleeve rod connected to the guide screw, and the guide sleeve rod is used to adjust the up and down movement of the contact member A; the active rod is symmetrically arranged on both sides of the guide sleeve, and the guide screw is provided with a limiting ring for limiting the guide sleeve, and the limiting ring is symmetrically arranged above and below the guide sleeve.

2. The peritoneal dialysis catheter fixation device according to claim 1, characterized in that, The contact element A is a movable disc. The surface of the movable disc is provided with multiple inwardly recessed grooves that are adapted to the peritoneal dialysis catheter. The included angle between two spaced-apart grooves is an obtuse angle. The contact element A and the contact element B have the same structure. The connecting shaft is disposed in the side wall of the connecting tube A. The connecting tube A or the connecting tube B is respectively provided with a limiting element A for limiting the movement of the guide screw. The outside of the guide screw is provided with a limiting element B for limiting the up and down movement of the guide sleeve. The cross-sectional shape of the driving rod and the driven rod are both arc-shaped, and the included angle between the driving rod and the driven rod is in the range of 90° to 150°.

3. The peritoneal dialysis catheter fixation device according to claim 2, characterized in that, The fixed belt is provided with a limiting box corresponding to the connecting belt on the outside. The limiting box is provided with a clamping plate assembly adapted to the limiting box and the clamping plate assembly is corresponding to the connecting belt. The limiting box is provided with a plurality of locking nuts for locking the clamping plate assembly on the outside.

4. The peritoneal dialysis catheter fixation device according to claim 3, characterized in that, The lowest end of the limiting box is provided with a protrusion for limiting the clamping plate assembly. The clamping plate assembly includes plate A and plate B, which are connected by a guide rod and have a gap between them. The length of the connecting strap is greater than the length of the fixing strap. The lower end of the placement plate is provided with a rubber airbag, and the outside of the placement plate is provided with a one-way air inlet valve connected to the rubber airbag. The outside of the placement plate is provided with a one-way air outlet valve connected to the rubber airbag. The placement plate has a connected ventilation channel with multiple air outlets extending downward to the outside of the rubber airbag.

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