Catheter fixing device for hepatobiliary and pancreatic surgery

Abstract

The utility model discloses a catheter fixing device for hepatobiliary and pancreatic surgery, which relates to the technical field of medical instruments, and comprises a consumable piece, the consumable piece is provided with two opposite surfaces, one surface is provided with an adhesive tape layer, and the other surface is provided with an adhesive tape layer. The consumable piece is annularly adhered to the outer cambered surface of a to-be-fixed point of the catheter through the adhesive tape layer, and at least three groups of stress rings are arranged on the other surface of the consumable piece along the circumferential direction of the ring at equal intervals; the number of the L-shaped drag hooks is equal to the group number of the stress rings; according to the utility model, when the catheter is fixed, an external expansion type fixing mode is adopted, so that on one hand, the catheter cannot be extruded, the situation that the passage capacity of a channel is reduced due to extrusion deformation of the catheter is avoided, and on the other hand, a part to be fixed can be locked; and the to-be-fixed part of the catheter is prevented from being aligned with the fixing device.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a catheter fixation device for hepatobiliary and pancreatic surgery. Background Technology

[0002] The Department of Hepatobiliary and Pancreatic Surgery primarily diagnoses and treats diseases including gallbladder diseases, liver diseases, and pancreatic diseases. Specific diseases include cholecystitis, gallstones, gallbladder polyps, gallbladder cancer, liver cysts, liver abscesses, hepatic hemangiomas, hepatic adenomas, primary liver cancer, metastatic liver cancer, pancreatitis, pancreatic cancer, cholangiocarcinoma, bile duct stones, congenital bile duct dilatation, congenital biliary atresia, islet cell tumors, gastrinomas, bile duct injuries, biliary hemorrhage, hypersplenism, and portal hypertension.

[0003] Traditional catheter fixation devices used in hepatobiliary and pancreatic surgery fall into two categories. The first uses bilateral pressure to clamp the catheter. This method easily leads to catheter deformation due to compression, narrowing the drainage channel, especially for blood clots, thus affecting drainage efficiency. The second uses a cylindrical structure, placing the catheter inside the cylinder with a gap between the cylinder wall and the catheter's outer wall to prevent compression. While this method relies on the position of the cylindrical structure to limit significant catheter movement, it cannot completely fix the catheter's position, and the catheter is prone to slipping inside. Utility Model Content

[0004] This invention provides a catheter fixation device for hepatobiliary and pancreatic surgery, which has the advantages of not compressing the catheter and being able to completely fix the catheter, thus solving the problems of compression and inability to completely fix the catheter in existing fixation devices.

[0005] To achieve the goal of preventing catheter compression and completely fixing the catheter, this utility model provides the following technical solution: a catheter fixation device for hepatobiliary and pancreatic surgery, comprising: a consumable sheet having two opposing surfaces, one surface having an adhesive tape layer, and the consumable sheet being annularly bonded to the outer arc surface of the catheter to be fixed via the adhesive tape layer; the other surface of the consumable sheet having at least three sets of force-bearing rings evenly spaced along the circumference of the ring; L-shaped hooks having the same number of L-shaped hooks as the number of force-bearing rings, with one end of the L-shaped hooks inserted into the opposing force-bearing rings and the other end of the L-shaped hooks having an outer pull plate; an external expansion mechanism for applying a force away from the center of the ring along the radial direction of the ring to the external pull plate, causing the consumable sheet to be subjected to a force away from the center of the catheter, forming a state where the consumable sheet expands the catheter; and a positioning mechanism located on one side of the external expansion mechanism for locking the external expansion mechanism onto a bed frame.

[0006] As a preferred technical solution of this utility model, the external expansion mechanism includes a lifting platform located around the guide tube. The outer surface of the lifting platform near the outer pull plate has a tapered portion, and the inner surface of the outer pull plate near the lifting platform has a first slope. The lifting platform can generate a thrust on the outer pull plate in the circumferential radial direction as it approaches the outer pull plate.

[0007] As a preferred technical solution of this utility model, an integrated limiting slider is provided on the first slope surface, and a limiting groove adapted to the limiting slider is provided on the conical part, so that the outer pull plate and the lifting platform are inseparable.

[0008] As a preferred embodiment of this utility model, the external expansion mechanism further includes: a fixed ring, which is rotatably assembled on the outside of the lifting platform, so that the lifting platform can rotate within the fixed ring to adjust the position of the L-shaped hook relative to the position of the force-bearing ring; and a lifting assembly, which is assembled on one side of the fixed ring and is used to adjust the position of the fixed ring in the axial direction of the guide tube to change the relative position of the lifting platform and the external pulling plate, so that the lifting platform generates an external thrust on the external pulling plate.

[0009] As a preferred technical solution of this utility model, the lifting platform has a first notch on the side that avoids the position of the limiting slide groove, and the fixed ring has a second notch in the area opposite to the first notch.

[0010] As a preferred embodiment of this utility model, the tension assembly includes a fixed frame, a connecting platform, and a rotating ring: wherein the fixed frame includes a top ring, which is located around the outer tension plate, and a second guide rod is fixed between the outer tension plate and the top ring on the side away from the guide tube, the second guide rod passing through the top ring along the ring thickness direction; wherein the rotating ring is located inside the outer tension plate, and a convex arc is provided on the outer surface of the rotating ring in the area opposite to the outer tension plate, and when the rotating ring rotates, the convex arc on it can generate a thrust on the outer tension plate.

[0011] As a preferred technical solution of this utility model, one end of the top ring is connected to the base ring via a connecting ridge. The inner wall of the base ring is provided with a second limiting groove. The outer wall of the rotating ring is provided with a second limiting ring at a position opposite to the second limiting groove, so that the rotating ring and the fixed frame form a structure that can rotate relative to each other and cannot be disassembled. The end of the rotating ring away from the convex arc is provided with a rotating part.

[0012] As a preferred embodiment of this utility model, the base ring and the top ring are provided with a fourth notch along the axial direction on the side away from the second guide rod; the rotating ring is provided with a third notch along the axial direction at the position opposite to the fourth notch.

[0013] Compared with the prior art, this utility model provides a catheter fixation device for hepatobiliary and pancreatic surgery, which has the following beneficial effects:

[0014] This catheter fixation device for hepatobiliary and pancreatic surgery uses an external expansion fixation method. This fixation method avoids compressing the catheter, thus preventing the catheter from deforming and reducing the passage capacity. On the other hand, it can lock the part to be fixed, preventing relative displacement between the part of the catheter to be fixed and the fixation device. Attached Figure Description

[0015] Figure 1 This is a diagram showing the state of the consumable sheet of this utility model not being attached to the catheter;

[0016] Figure 2 This is an overall view of Embodiment 1 of the present utility model;

[0017] Figure 3 This is a diagram showing the fit between the consumable sheet and the L-shaped hook of this utility model;

[0018] Figure 4 This utility model Figure 3 Exploded view;

[0019] Figure 5 This is a schematic diagram of the structure of the outer pull plate in Embodiment 1 of this utility model;

[0020] Figure 6 This is an assembly drawing of the lifting platform and the outer pull plate in Embodiment 1 of this utility model;

[0021] Figure 7 This is an overall view of Embodiment 2 of the present invention;

[0022] Figure 8 This is a schematic diagram of the L-shaped hook being inserted into the force-bearing ring in Embodiment 2 of this utility model;

[0023] Figure 9 This utility model Figure 8 Exploded view;

[0024] Figure 10 This is a schematic diagram of the structure of the outer pull plate in Embodiment 2 of this utility model;

[0025] Figure 11 This is a top view of Embodiment 2 of the present invention.

[0026] In the diagram: 1. Adhesive tape layer; 2. Consumable sheet; 21. Force ring; 3. Lifting assembly; 31. First knob; 32. First C-shaped frame; 33. First guide rod; 34. Lifting block; 35. Connecting rod; 36. Second threaded rod; 4. Positioning mechanism; 41. Second U-shaped frame; 42. Pressure plate; 43. Adjusting shaft; 44. Second knob; 45. First threaded rod; 5. Connecting platform; 6. Outer pull plate; 61. First slope; 62. Limiting slider; 7. L-shaped hook; 8. Lifting assembly. Platform; 81. Conical part; 82. Limiting groove; 83. First notch; 84. First limiting groove ring; 9. Fixed ring; 91. First limiting ring; 92. Second notch; 10. Fixed frame; 101. Base ring; 102. Top ring; 103. Second guide rod; 104. Fourth notch; 105. Cap head; 106. Connecting ridge; 107. Second limiting groove; 11. Rotating ring; 111. Convex arc; 112. Second limiting ring; 113. Third notch; 114. Rotating part. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The following is based on Figures 1-11 This invention describes a catheter fixation device for hepatobiliary and pancreatic surgery.

[0029] Example 1

[0030] Please refer to this embodiment. Figures 1-6 .

[0031] This utility model discloses a catheter fixation device for hepatobiliary and pancreatic surgery, including a consumable piece 2, an L-shaped hook 7, and an external expansion mechanism.

[0032] like Figure 1 When not in use, the consumable sheet 2 is a sheet structure with two opposing surfaces. One surface has an adhesive tape layer 1. When fixing the catheter, the positioning point of the catheter must first be found, and the protective film on the adhesive tape layer 1 must be torn off. Then, the consumable sheet 2 can be rolled up and bonded to the outer arc surface of the catheter to be fixed through the adhesive tape layer 1, so that the consumable sheet 2 forms a ring structure.

[0033] Preferably, the tape layer 1 is a strong adhesive, which makes it have a strong viscosity.

[0034] Alternatively, polyvinyl chloride (PVC), silicone rubber, or dry rubber (raw rubber) can be used, and the structure of this material allows for easy bending of the consumable sheet 2.

[0035] Combination Figures 2-4 As shown, at least three sets of force-bearing rings 21 are provided at equal intervals along the circumference of the ring on the other side of the consumable sheet 2. The number of L-shaped hooks 7 is equal to the number of sets of force-bearing rings 21. One end of the L-shaped hook 7 is inserted into the opposite force-bearing ring 21, and the other end of the L-shaped hook 7 has an outer pull plate 6. The outer expansion mechanism is used to apply a force away from the center of the ring along the radial direction of the ring to the outer pull plate 6, so that the consumable sheet 2 is subjected to a force away from the center of the conduit, thereby forming the state of the consumable sheet 2 expanding the conduit.

[0036] Therefore, the catheter fixation device for hepatobiliary and pancreatic surgery provided in this utility model embodiment adopts an external expansion type of fixation when fixing the catheter. This fixation method will not compress the catheter, thereby avoiding the situation where the catheter is deformed due to compression and the passage capacity is reduced. On the other hand, it can also lock the part to be fixed, preventing the part of the catheter to be fixed from falling off the fixation device.

[0037] In this embodiment, as shown Figure 3 Four sets of force rings 21 are set, with three force rings in each set. The four sets of force rings 21 can make the external tension force on the catheter more uniform, thereby further avoiding the catheter itself from denting.

[0038] Furthermore, the aforementioned external expansion mechanism also needs to be equipped with a corresponding positioning mechanism 4. The positioning mechanism 4 is located on one side of the external expansion mechanism and is used to lock the external expansion mechanism onto the bed frame.

[0039] Specifically, the aforementioned external expansion mechanism includes a lifting platform 8, which is located around the guide tube. The outer surface of the lifting platform 8 near the outer pull plate 6 has a tapered portion 81, and the inner surface of the outer pull plate 6 near the lifting platform 8 has a first slope 61. The slopes of the first slope 61 and the tapered portion 81 are matched. When the lifting platform 8 moves, it can gradually approach or move away from the outer pull plate 6. During the process of approaching the outer pull plate 6, since the diameter of the tapered portion 81 relative to the outer pull plate 6 gradually increases, it can generate a thrust on the outer pull plate 6 along the annular radial direction.

[0040] like Figure 4 and Figure 5 To facilitate the assembly of this fixing device, it is best that all L-shaped hooks 7 can be integrated as one piece. Therefore, an integrated limiting slider 62 is provided on the first slope 61, and a limiting groove 82 adapted to the limiting slider 62 is provided on the conical part 81, so that the outer pull plate 6 and the lifting platform 8 are inseparable, and all the outer pull plates 6 are assembled on the conical part 81. Thus, during assembly, after the entire lifting platform 8 is assembled around the guide tube, the L-shaped hooks 7 can be inserted into the force ring 21.

[0041] like Figure 6 In order to facilitate the assembly of the lifting platform 8 onto the guide tube, a first notch 83 is provided on the side of the lifting platform 8 that avoids the position of the limiting slide groove 82, so that during assembly, the guide tube can be moved to the middle of the lifting platform 8 along the first notch 83.

[0042] In order to fix the lifting platform 8, the aforementioned expansion mechanism also includes a fixed ring 9. In order to enable the lifting platform 8 to gradually approach or move away from the outer pull plate 6 along the axial direction, the expansion mechanism also includes a lifting component 3.

[0043] The fixed ring 9 is rotatably assembled on the outside of the lifting platform 8, so that the lifting platform 8 can rotate inside the fixed ring 9 to adjust the position of the L-shaped hook 7 relative to the position of the force ring 21 (this is because the direction of the force ring 21 on the consumable sheet 2 is uncertain when the operating nurse attaches the consumable sheet 2).

[0044] Preferably, a first limiting ring 91 is provided on the inner wall of the fixed ring 9, and a first limiting groove ring 84 adapted to the first limiting ring 91 is provided on the outer surface of the lifting platform 8, so that the lifting platform 8 and the fixed ring 9 are inseparable.

[0045] In addition, a second notch 92 is provided on the fixed ring 9 in the area opposite to the first notch 83 to facilitate the entry of the conduit.

[0046] The aforementioned lifting assembly 3 is assembled on one side of the fixed ring 9. The lifting assembly 3 is used to adjust the position of the fixed ring 9 in the axial direction of the guide tube, so as to change the relative position of the lifting platform 8 and the outer pull plate 6, so that the lifting platform 8 generates an outward thrust on the outer pull plate 6.

[0047] like Figure 1 The lifting assembly 3 includes a first C-shaped frame 32, within which a second threaded rod 36 is rotatably mounted. The second threaded rod 36 is parallel to the axial direction of the lifting platform 8. A lifting block 34 is threadedly connected to the second threaded rod 36. The lifting block 34 is fixed to the fixed ring 9 by a connecting rod 35. A first guide rod 33 for guiding the lifting block 34 is provided within the first C-shaped frame 32. A first knob 31 is fixed to one end of the second threaded rod 36. By rotating the first knob 31, the second threaded rod 36 can be rotated, thereby generating a threaded force between the second threaded rod 36 and the lifting block 34. This causes the lifting block 34 to move the fixed ring 9, which in turn moves the lifting platform 8.

[0048] The positioning mechanism 4 provided in this embodiment of the invention includes a second U-shaped frame 41, a pressure plate 42 disposed inside the second U-shaped frame 41, a first threaded rod 45 rotatably mounted on one side of the pressure plate 42, limiting the threaded connection between the first threaded rod 45 and one side of the second U-shaped frame 41, a second knob 44 fixed at one end of the first threaded rod 45, and a guide ridge for guiding the pressure plate 42 provided inside the second U-shaped frame 41.

[0049] Preferably, the second U-shaped frame 41 and the first C-shaped frame 32 are rotatably connected by an adjusting shaft 43, so that the second U-shaped frame 41 can rotate to be adjusted to a suitable installation position.

[0050] In this embodiment, rotating the second knob 44 can rotate the first threaded rod 45, thereby displacing the pressure plate 42, which in turn presses the metal rod at the head of the bed or the hanging bracket placed beside the bed between the pressure plate 42 and the side wall of the second U-shaped frame 41, thus achieving positioning.

[0051] The working principle and usage process of this embodiment are as follows: In use, firstly, the positioning mechanism 4 is locked in a lockable position. Then, the guide tube to be locked is inserted into the position of the lifting platform 8 from the position of the first notch 83. Then, the consumable sheet 2 is attached to the outside of the guide tube through the tape layer 1. Then, by rotating the lifting platform 8 on the fixed ring 9, each L-shaped hook 7 is aligned with the force ring 21 and inserted into the inside of the force ring 21. Then, the lifting assembly 3 moves the lifting platform 8 towards the consumable sheet 2. It is necessary to manually press each outer pull plate 6 so that there is a relative squeezing force between the outer pull plate 6 and the lifting platform 8. Thus, the lifting platform 8 can exert an outward pushing force on the outer pull plate 6, so that the outer pull plate 6 has a pulling force on the consumable sheet 2.

[0052] When removing this fixation device, the consumable sheet 2, the tape layer 1 and the stress ring 21 are not removed and are disposed of as medical waste along with the catheter. The remaining structure can be reused.

[0053] Example 2

[0054] This embodiment refers to Figures 7-11 As shown.

[0055] The difference between this embodiment and Embodiment 1 is that the tension assembly includes a fixed frame 10, a connecting platform 5, and a rotating ring 11.

[0056] The frame 10 includes a top ring 102, which is located around the outer pull plate 6. A second guide rod 103 is fixed between the outer pull plate 6 and the top ring 102 on the side away from the guide tube. The second guide rod 103 passes through the top ring 102 along the ring thickness direction, so that the four outer pull plates 6 can be assembled on the top ring 102 and can move radially along the top ring 102.

[0057] Preferably, a cap 105 is fixed at one end of the second guide rod 103 away from the center of the top ring 102 to prevent the second guide rod 103 from detaching from the top ring 102.

[0058] The rotating ring 11 is located inside the outer pull plate 6. The area on the outer surface of the rotating ring 11 opposite to the outer pull plate 6 is provided with a convex arc 111. When the rotating ring 11 rotates, the convex arc 111 on it can generate a thrust on the outer pull plate 6, thereby causing the outer pull plate 6 to pull the force ring 21 through the L-shaped pull hook 7.

[0059] Preferably, a base ring 101 is connected to one end of the top ring 102 via a connecting ridge 106. The inner wall of the base ring 101 is provided with a second limiting groove 107, and the outer wall of the rotating ring 11 is provided with a second limiting ring 112 at a position opposite to the second limiting groove 107, so that the rotating ring 11 and the fixed frame 10 form a structure that can rotate relative to each other and cannot be disassembled.

[0060] like Figure 8 and Figure 9 As shown, the end of the rotating ring 11 away from the convex arc 111 is provided with a rotating part 114 to facilitate the rotation of the rotating ring 11.

[0061] The base ring 101 and the top ring 102 have a fourth notch 104 on one side of the position away from the second guide rod 103 along the axial direction; the rotating ring 11 has a third notch 113 on the axial direction opposite to the fourth notch 104 to facilitate the entry of the conduit.

[0062] It should be noted that the third notch 113 and the fourth notch 104 are misaligned when the rotating ring 11 rotates.

[0063] In this embodiment, a connecting platform 5 is fixed on one side of the base ring 101, and the connecting platform 5 is rotatably connected to the adjusting shaft 43.

[0064] The working principle and usage process of this embodiment are as follows: When in use, first lock the positioning mechanism 4 in a lockable position, then insert the guide tube into the position of the lifting platform 8 from the position of the first notch 83, then attach the consumable sheet 2 to the outside of the guide tube through the tape layer 1, and then rotate the rotating part 114 to make the entire rotating ring 11 rotate. When it rotates, it can change the position of the convex arc 111, so that the convex arc 111 can push the outer pull plate 6, and the outer pull plate 6 can provide a pulling force to the force ring 21 through the L-shaped pull hook 7.

[0065] It should be noted that, in this document, terms such as "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 a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0066] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A duct fixation device for hepatobiliary and pancreatic surgery, characterized by, The utility model relates to a kind of medical device, including: Consumable sheet (2), the consumable sheet (2) has two opposite faces, one of which has adhesive tape layer (1), and consumable sheet (2) is annularly bonded to the outer arc surface of catheter fixed point by adhesive tape layer (1), and the other face of consumable sheet (2) is provided with at least three groups of force ring (21) along the equidistant circumferential direction of annular; L-shaped draw hook (7), the number of L-shaped draw hook (7) is equal to the group number of force ring (21), and one end of L-shaped draw hook (7) is inserted into opposite force ring (21), and the other end of L-shaped draw hook (7) has outer pull plate (6); Outer inflation mechanism, the outer inflation mechanism is used to exert force in the radial direction of annular away from the center of annular circle to outer pull plate (6), so that consumable sheet (2) is subjected to force away from the center of catheter, and the state of consumable sheet (2) is formed to inflate catheter; Positioning mechanism (4), the positioning mechanism (4) is arranged on the side of outer inflation mechanism, and is used to fix outer inflation mechanism on hospital bed support.

2. The device of claim 1, wherein the device is configured to be used in a procedure for the treatment of a pancreatic duct. The outer inflation mechanism includes lifting platform (8), the lifting platform (8) is located at the periphery of catheter, and the outer surface of one end of lifting platform (8) close to outer pull plate (6) has tapered portion (81), the inner surface of one end of outer pull plate (6) close to lifting platform (8) has first slope (61), and the lifting platform (8) can generate thrust in the radial direction of annular to outer pull plate (6) in the process close to outer pull plate (6).

3. The device of claim 2, wherein: The first slope (61) is provided with integral limit sliding block (62), the tapered portion (81) is provided with limit sliding groove (82) matched with limit sliding block (62), so that outer pull plate (6) and lifting platform (8) are not detachable.

4. The device of claim 3, wherein the device is configured to be used in a procedure for the treatment of a pancreatic duct. The outer inflation mechanism further includes: Fixed ring (9), the fixed ring (9) is rotatably assembled outside lifting platform (8), so that lifting platform (8) can rotate in fixed ring (9), to adjust the position of L-shaped draw hook (7) relative to the position of force ring (21); Lifting assembly (3), the lifting assembly (3) is assembled on one side of fixed ring (9), and is used to adjust the position of fixed ring (9) in the axial direction of catheter, to change the relative position of lifting platform (8) and outer pull plate (6), so that lifting platform (8) generates outward thrust to outer pull plate (6).

5. The device of claim 4, wherein: The lifting platform (8) is provided with first notch (83) on the side away from the position of limit sliding groove (82), and the second notch (92) is formed in the area of fixed ring (9) opposite to first notch (83).

6. The device of claim 1, wherein: It further includes tension assembly, and the tension assembly includes fixed frame (10), connecting platform (5) and rotating ring (11); The fixed frame (10) includes: Top ring (102), the top ring (102) is located at the periphery of outer pull plate (6), and the second guide rod (103) is fixed between the side of outer pull plate (6) away from catheter and top ring (102), and the second guide rod (103) passes through top ring (102) along the thickness direction of top ring (102); The rotating ring (11) is located at the inner side of the outer pull plate (6), and the outer surface of the rotating ring (11) is provided with a convex arc (111) at the position opposite to the outer pull plate (6), and the convex arc (111) on the rotating ring (11) can generate a pushing force on the outer pull plate (6) when the rotating ring (11) rotates.

7. The device of claim 6, wherein: One end of the top ring (102) is connected with the base ring (101) through the connecting ridge (106), the inner wall of the base ring (101) is provided with a second limiting groove (107), the outer wall of the rotating ring (11) is provided with a second limiting ring (112) at the position opposite to the second limiting groove (107), so that the rotating ring (11) and the fixed frame (10) form a relatively rotatable and non-detachable structure; The end of the rotating ring (11) away from the convex arc (111) is provided with a rotating part (114).

8. The device of claim 7, wherein: The base ring (101) and the top ring (102) are provided with fourth notches (104) on the sides away from the second guide rods (103) along the axial direction; The rotating ring (11) is provided with third notches (113) on the positions opposite to the fourth notches (104) along the axial direction.

Images