Catheter fixing device with wound closing ring seat

Abstract

The catheter fixing device with the wound closing ring seat comprises a fixing ring seat used for fixing a catheter and the closing ring seat used for closing a wound, the fixing ring seat and the closing ring seat are arranged up and down, the fixing ring seat and the closing ring seat are concentrically arranged, and the fixing ring seat further comprises at least two flexible hoop strips used for fixing the catheter; the closed ring seat comprises a second ring cover assembly and a second base; the second base is provided with at least two closed sliding pieces, and traction ropes which rotate along with the second ring cover assembly to drive the closed sliding pieces to slide towards the center of the closed ring base are arranged on the closed sliding pieces in a penetrating mode. The advantages that the fastening degree of catheters with different diameters and different types can be flexibly controlled through bidirectional rotation, and the catheters can be repeatedly fastened and unfastened are reserved; all parts of the device are optimized and integrated, assembly operation is reduced, and production and assembly are easy; the closed ring seat is additionally arranged, so that the whole device has a wound closing function, and the traction influence of the removal device on a wound is effectively reduced.

Description

Technical Field

[0001] This invention patent relates to the technical field of medical devices, especially a catheter fixing device with a wound closing ring seat for fixing a catheter on the patient's body surface. Background Art

[0002] During clinical surgical drainage, it is necessary to guide the pus, blood, and fluid accumulated in human tissues or body cavities to the outside through a catheter. To facilitate wound healing, both doctors and patients hope to fix the catheter for a long time during the treatment process to avoid catheter deviation.

[0003] Publication No. CN112386777B discloses a drainage tube fixing structure with an internal anti - reverse design, where the ratchet can only rotate unidirectionally. The catheter installation operation is relatively limited, and it is not convenient for medical staff to adjust the catheter position again or replace the absorbent dressing according to the drainage situation. There is a need for a catheter fixing device that can conveniently switch the catheter fixing / unlocking state.

[0004] Publication No. CN106806974A discloses a catheter fixing device that can control the bidirectional rotation of the rotating ring relative to the fixed ring, can flexibly control the fastening degree of catheters with different diameters and different types, and has the advantages of being able to repeatedly fasten and release the catheter. However, after the drainage function is completed, due to the existence of the skin adhesive layer, it is still necessary to remove the catheter fixing device to promote wound healing. At this time, the skin adhesive layer is likely to cause secondary damage to the wound skin due to pulling; and the device has more structural components and the assembly is more cumbersome, which needs further simplification and improvement. Summary of the Invention

[0005] The purpose of the present invention is to solve the existing technical problems and propose a catheter fixing device with a wound closing ring seat.

[0006] To achieve the above purpose, the present invention adopts the following technical scheme: A catheter fixing device with a wound closing ring seat, including an upper and lower arranged fixed ring seat for fixing the catheter and a closing ring seat for closing the wound. The fixed ring seat and the closing ring seat are concentrically arranged.

[0007] The fixed ring seat includes a first ring cover assembly and a first base, and the upper end surface of the first base is rotationally connected to the first ring cover assembly.

[0008] The fixed ring seat further includes at least two flexible hoop strips for fixing the catheter, and both ends of the flexible hoop strips are respectively connected to the first ring cover assembly and the first base.

[0009] The closed loop base includes a second ring cover assembly and a second base, and the second ring cover assembly is rotatably connected to the upper end surface of the second base; the second base is provided with at least two closed sliding pieces, and a pulling rope that rotates with the second ring cover assembly to drive the closed sliding pieces to slide towards the center of the closed loop base is inserted through the closed sliding pieces, and both ends of the pulling rope are fixedly connected to the second ring cover assembly;

[0010] The first base is connected to the second ring cover assembly, and the first ring cover assembly rotates independently relative to the catheter fixing device.

[0011] Preferably, a skin adhesive layer is connected to the lower end surface of the closed loop base, and the skin adhesive layer (3) forms an opening within the area defined by the closed loop base.

[0012] Preferably, the first ring cover assembly includes a first ring cover and a first rotating ring, and the first ring cover that rotates synchronously with it is covered on the first rotating ring;

[0013] A first ring groove for rotatably mounting the first rotating ring is formed on the upper end surface of the first base, and first ratchet teeth are arranged on the outer side wall of the first ring groove; a movable ratchet pawl with first teeth is connected to the first rotating ring; a linkage member for driving the movable ratchet pawl to move between a first position and a second position is also connected to the movable ratchet pawl; in the one-way locking state, the movable ratchet pawl is located at the first position, so that the first teeth are engaged with the first ratchet teeth, and the first rotating ring is locked at any position after one-way rotation relative to the first base; in the unlocked state, the linkage member drives the movable ratchet pawl to move to the second position, so that the first teeth are disengaged from the first ratchet teeth to release the lock and enable the first rotating ring to rotate reversely relative to the first base.

[0014] Preferably, a first step extending horizontally inwards is further connected to the inner side wall of the first rotating ring, and a plurality of first positioning buckles are circumferentially distributed at the relative position of the first base and the first step; the first positioning buckles are snap-fitted with the first step, and the plurality of first positioning buckles are circumferentially arranged as the inner side wall of the first ring groove.

[0015] Preferably, a wire groove is reserved on the first rotating ring, a fixed wire hole is formed on the upper end surface of the first base, and the fixed wire hole is located between the wire groove and the center of the fixed ring base; one end of the flexible hoop is fixedly connected to the wire groove, and the other end is fixedly connected to the fixed wire hole.

[0016] Preferably, the second ring cover assembly includes the second ring cover and the second rotating ring, and the second ring cover that rotates synchronously with the second rotating ring is covered on the second rotating ring; a second ring groove for rotatably mounting the second rotating ring is provided on the upper end surface of the second base, and second ratchet teeth are arranged on the side wall of the second ring groove; second teeth that engage with the second ratchet teeth are provided on the outer wall of the second rotating ring, and the second rotating ring is locked at any position after rotating relative to the second base.

[0017] Preferably, both ends of the pulling rope are respectively connected to different wiring holes on the second rotating ring, a wire cavity for the pulling rope to pass through is reserved between the second rotating ring and the inner side wall of the second ring groove, and a wire outlet for positioning the rotation inflection point of the pulling rope is opened at the initial position of the second base relative to the wiring holes, and the wire outlet communicates with the wire cavity; one end of the pulling rope passes out from the wire outlet, passes through the closing sliding piece, and then passes into the wire cavity from the other wire outlet.

[0018] Preferably, a radial sliding groove for the closing sliding piece to slide along the closing ring seat is formed by concave-convex on the bottom of the second base, the closing sliding piece is slidably connected to the radial sliding groove, and the lower end surface of the closing sliding piece and the bottom surface of the second base are on the same horizontal plane; a hook for connecting the pulling rope is connected to the end of the closing sliding piece near the center of the closing ring seat.

[0019] Preferably, an extension platform extends horizontally outward in the radial direction at the bottom of the first base, the extension platform protrudes outside the first ring cover assembly and the second ring cover assembly, and a plurality of anti-slip bumps are arranged circumferentially on the outer wall of the extension platform.

[0020] Preferably, a conduit protection cover is detachably connected to the first ring cover assembly.

[0021] The beneficial effects of the present invention are as follows: The bidirectional rotation is retained to flexibly control the fastening degree of conduits with different diameters and different types, and the advantages of being able to repeatedly fasten and unfasten the conduits are retained; the components of the device are optimized and integrated, reducing the assembly operation and being easy to produce and assemble; by adding a closing ring seat, the device as a whole has the function of closing the wound, effectively reducing the pulling influence of the removal device on the wound. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the conduit fixing device (flexible strap in a tightened state) of the present invention;

[0023] Figure 2 is a reference diagram of an embodiment (with a conduit protection cover) of the present invention;

[0024] Figure 3 is a schematic structural diagram of the first ring cover of the present invention;

[0025] Figure 4 Schematic structural diagram of the first rotating ring of the present invention;

[0026] Figure 5 Schematic assembly diagram of the first rotating ring and the first ring seat of the present invention;

[0027] Figure 6 Schematic structural diagram of the first base of the present invention;

[0028] Figure 7 Schematic structural diagram of the second ring cover of the present invention;

[0029] Figure 8 Front view of the second ring cover of the present invention;

[0030] Figure 9 Schematic structural diagram of the second rotating ring, pulling rope and closing slide of the present invention (initial position);

[0031] Figure 10 Schematic assembly diagram of the second rotating ring and the second ring seat of the present invention;

[0032] Figure 11 Bottom surface structure diagram of the second ring seat of the present invention;

[0033] Figure 12 Schematic diagram of the wire cavity position of the present invention;

[0034] Figure 13 Schematic structural diagram of the closing slide of the present invention. Detailed implementation manners

[0035] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0036] Such as Figure 1-2As shown, the catheter fixing device with a wound closing ring seat of the present invention comprises a fixing ring seat 1 for fixing the catheter and a closing ring seat 2 for closing the wound, which are arranged up and down, the fixing ring seat 1 and the closing ring seat 2 are arranged concentrically, the fixing ring seat 1 comprises a first ring cover assembly and a first base 13, the upper end surface of the first base 13 is rotatably connected to the first ring cover assembly; the fixing ring seat 1 also comprises at least two flexible hoop strips 10 for fixing the catheter, the two ends of the flexible hoop strips 10 are respectively connected to the first ring cover assembly and the first base 13; the closing ring seat 2 The device comprises a second ring cover assembly and a second base 23, wherein the upper end surface of the second base 23 is rotatably connected to the second ring cover 21 assembly; the second base 23 is provided with at least two closed slides 24, and the closed slides 24 are provided with a pulling rope 26 which rotates with the second ring cover 21 assembly to drive the closed slides 24 to slide toward the center of the closed ring seat 2, and both ends of the pulling rope 26 are fixed to the second ring cover 21 assembly; the first base 13 is connected to the second ring cover 21 assembly, and the first ring cover assembly rotates independently relative to the catheter fixing device. The lower end surface of the closed ring seat (2) is connected to a skin adhesive layer 3, and the skin adhesive layer 3 forms an opening 31 in the area defined by the closed ring seat 2, which is used for bonding and fixing on the skin. The catheter fixing device with the wound closing ring seat of the present invention is used, and the device is placed in the direction where the closing slides are arranged on both sides of the wound. The conventional catheter fixing operation is performed through the fixed ring seat. After the fixed ring seat ends the catheter drainage function, the flexible hoop strip can be cut off or the first ring cover component can be reversed to release the catheter fixing state and remove the catheter from the wound; then the second ring cover is rotated, the second rotating ring rotates synchronously, the pulling rope is gradually tightened, and the closing slide slides toward the center of the closing ring seat to drive the wound skin adhered to the closing ring seat to fit, thereby promoting wound closure; after the wound is healed, the catheter fixing device can be removed together by peeling off the skin adhesive layer, the overall operation steps are simple, and secondary damage to the wound is reduced.

[0037] like Figure 3-6As shown, the catheter fixing device with a wound closing ring seat of the present invention, the first ring cover assembly includes a first ring cover 11 and a first rotating ring 12, and the first ring cover 11 that rotates synchronously with it is covered on the first rotating ring 12; on the upper end surface of the first base 13, a first ring groove for rotatably mounting the first rotating ring 12 is provided, and a first ratchet 131 is arranged on the outer side wall of the first ring groove; on the first rotating ring 12, a movable ratchet 121 with a first tooth 1211 is connected; on the movable ratchet 121, a linkage 1212 for driving the movable ratchet 121 to move between a first position and a second position is also connected; in the one-way locking state, the movable ratchet 121 is located at the first position, so that the first tooth 1211 meshes with the first ratchet 131, and the first rotating ring 12 is locked at any position after one-way rotation relative to the first base 13; in the unlocked state, the linkage 1212 drives the movable ratchet 121 to move to the second position, so that the first tooth 1211 disengages from the first ratchet 131 to release the lock, enabling the first rotating ring 12 to rotate reversely relative to the first base 13, and the movable ratchet and the linkage are matched one by one.

[0038] Further, to enhance the use experience and rotational stability, the number of movable ratchets is not less than one, and can be 2, 3, 4, etc. A number of movable ratchets are arranged at equal arc distances along the outer diameter of the first rotating ring, or a number of movable ratchets are arranged along the outer diameter of the first rotating ring according to the fingertip holding distance. Multiple movable ratchets ensure that reverse rotation occurs when multiple linkages move synchronously, which can effectively avoid the phenomenon of catheter loosening caused by accidental contact with the linkage when the catheter fixing device is impacted at a single point, and increase the fastening stability of the catheter fixing device.

[0039] On the first rotating ring 12, a first cavity 120 for accommodating the movement of the movable ratchet 121 between the first position and the second position is provided, and when the movable ratchet is in the second position, it abuts against the inner wall of the first cavity 120.

[0040] Further, the movable ratchet is made of a flexible material, and the movable ratchet is integrally connected to the first rotating ring. The movable ratchet is an arc-shaped claw with a tapered end, and the first tooth is located at the tapered end. The overall integral molding of the first rotating ring is convenient for assembly.

[0041] Further, the linkage 1212 is fixedly connected to the upper end surface of the tooth 1211. On the first ring cover 11, an opening groove 111 for exposing the linkage 1212 is provided, and a movable cavity for the movement of the linkage 1212 is reserved in the opening groove 111. During use, the linkage exposed on the first ring cover can be radially pressed, and the linkage moves in the movable cavity and drives the movable ratchet to be bent inward under pressure to the second position, so that the first tooth disengages from the first ratchet.

[0042] The inner side wall of the first rotating ring 12 is also connected to a first step 122 extending horizontally inward, and the first base 13 is circumferentially distributed with a plurality of first positioning buckles 133 at the position opposite to the first step 122; the first positioning buckles 133 are engaged and matched with the first step 122, and the plurality of first positioning buckles 133 are circumferentially arranged as the inner side wall of the first ring groove. The first rotating ring is vertically engaged in the first ring groove through the first positioning buckles to prevent the first rotating ring from falling out of the first ring groove.

[0043] A wire groove 124 is reserved on the first rotating ring 12, and a fixed wire hole 134 is opened on the upper end surface of the first base 13, and the fixed wire hole 134 is located between the wire groove 124 and the center of the fixed ring base 1; one end of the flexible hoop 10 is fixed to the wire groove 124, and the other end is fixed to the fixed wire hole 134. The upper end surface of the first base is provided with wire hole columns in pairs, and two adjacent wire hole columns are concavely spliced ​​with each other to form a fixed wire hole. The flexible hoop is made of a material with a certain toughness and can be bent and shaped. The flexible hoop bends and deforms with the rotation of the first rotating ring to form an arc segment or a semi-arc for clamping the catheter.

[0044] Furthermore, the number of the flexible hoop strips is not less than one, and can be 2, 3 or 4 or more, and can be adaptively adjusted according to the size of the conduit. The flexible hoop strip can be fixedly connected to the wire groove or the fixed wire hole through a plug-in column or a wire plug.

[0045] Furthermore, a fixing hole 123 for positioning and assembling the first ring cover 11 is formed on the first rotating ring 12 , and a first fixing column 112 matching with the first fixing hole 123 is connected inside the first ring cover 11 .

[0046] Furthermore, the outer surface of the first ring cover is provided with a convex mark for marking the unidirectional rotation direction.

[0047] The assembly method of the fixed ring seat is as follows: the first rotating ring is clamped into the first base, each flexible hoop strip is plugged and installed in sequence, and then the first ring cover is plugged and positioned to cover the upper end surface of the first rotating ring to complete the assembly of the fixed ring seat. When in use, the first ring cover can be rotated to drive the first rotating ring to rotate synchronously, bend the flexible hoop strip, and realize the fastening operation of the catheter; by pressing the linkage, the first tooth and the first ratchet are disengaged, and the first rotating ring can be rotated in the opposite direction to release the fastening of the catheter.

[0048] like Figure 7-13As shown in the figure, the catheter fixing device with a wound closing ring seat of the present invention, the second ring cover 21 assembly includes a second ring cover 21 and a second rotating ring 22, and the second ring cover 21 that rotates synchronously with it is covered on the second rotating ring 22; a second ring groove for rotatably installing the second rotating ring 22 is provided on the upper end surface of the second base 23, and second ratchet teeth 231 are arranged on the side wall of the second ring groove; second teeth 221 meshing with the second ratchet teeth 23 are provided on the outer wall of the second rotating ring 22, and the second rotating ring 22 is locked at any position after rotating relative to the second base 23. The one-way rotation locking function of the second ring cover assembly is realized through the cooperation of the second ratchet teeth and the second teeth, avoiding the occurrence of the second ring cover assembly rotating back.

[0049] Further, the second ratchet teeth are located on the outer side wall of the second ring groove, and a plurality of second positioning buckles 232 are circumferentially distributed at the relative position between the inner side wall of the second base 23 and the inner side wall of the second rotating ring 22. The second positioning buckles 232 are circumferentially arranged as the inner side wall of the second ring groove to prevent the second rotating ring from disengaging from the second ring groove.

[0050] Further, the second ring cover 21 is inserted and connected with the first base 13. A plurality of slots 211 are provided on the second ring cover 21, and insertion blocks 130 that are rotationally clamped with the slots 211 are connected to the lower end surface of the first base 13. The insertion blocks 130 correspond to the slots 211 one by one.

[0051] Further, a second fixing hole 222 for positioning the second ring cover 21 is also provided on the second rotating ring 22. A second fixing column 212 that cooperates with the second fixing hole 222 is connected inside the second ring cover 21. The second fixing column 212 is a positioning pin or a hot melt column.

[0052] In an implementation manner of the pulling rope of the present invention, the number of closing sliders is two, and the two closing sliders are arranged oppositely. The pulling ropes correspond to the closing sliders one by one. Both ends of the pulling rope 26 are respectively connected to different wiring holes 223 on the second rotating ring 22. A wire cavity 262 for the pulling rope 26 to pass through is reserved between the second rotating ring 22 and the inner side wall of the second ring groove. And a wire outlet 260 for positioning the rotation inflection point of the pulling rope 26 is provided at the initial position of the second base 23 relative to the wiring hole 223. The wire outlet 260 communicates with the wire cavity 262; one end of the pulling rope 26 passes out from the wire outlet 260, passes through the closing slider 24, and then passes into the wire cavity 262 from the other wire outlet 260. Through the setting of the rotation inflection point, the pulling rope is gradually tightened and straightened within the opening area formed by the closing ring seat to drive the closing slider closer to the wound. A radial gap is left between the lower part of the second rotating ring and the second positioning buckle to form a wire cavity with a closed upper end, facilitating the constraint of the running track of the pulling rope and preventing the pulling rope from disengaging from the wire cavity.

[0053] Furthermore, a plurality of positioning blocks 233 are circumferentially arranged on the inner side wall of the second annular groove. The positioning blocks 233 are arranged in pairs, and a circumferential gap is left between the pairs of positioning blocks as a wire outlet 260. There are four wire outlets.

[0054] Both ends of the pulling rope 26 are connected with rope posts 261, and the rope posts 261 are inserted into the wiring holes 223 to facilitate the assembly and positioning of the pulling rope.

[0055] Furthermore, the initial positions of the two wiring holes are connected to the closed slide to form an isosceles triangle, wherein the closed slide is located at the vertex of the isosceles triangle; the pulling rope at the initial position is arranged along the circumference of the inner ring of the base, and at this time, the pulling rope protrudes outward from the straight line connecting the wiring hole and the closed slide. The setting of the isosceles triangle allows the closed slide to be evenly stressed during the rotation of the rotating ring, and at the same time, the pulling rope is arranged along the circumference of the inner ring of the base in the initial state, which can reduce interference with the catheter fixing device and facilitate the drainage operation of fixing the catheter in the early stage.

[0056] Furthermore, four wiring holes are opened on the second rotating ring, and the two ends of the pulling rope passed through the closed slide are fixedly connected to two adjacent wiring holes, so the four wiring holes are arranged at the four corners of the second rotating ring; the length of the pulling rope is not less than half the circumference of the inner ring of the closed ring seat.

[0057] Furthermore, the pulling rope is made of a low-ductility material and can be a soft rope or a hard rope; the pulling rope can also be replaced by a low-ductility plastic strip or metal wire.

[0058] The bottom of the second base 23 is concave to form a radial groove 23 for the closing slide 24 to slide along the closed ring seat 2. The closing slide 24 is slidably connected to the radial groove 231, and the lower end surface of the closing slide 24 is located at the same horizontal plane as the bottom surface 230 of the second base; the closing slide 24 is connected to a hook 240 for passing the pulling rope 26 near the center end of the closed ring seat, and the second base is connected to a clamping column group 234 for assembling the positioning hook; and the pulling rope 24 and the closed hook column 243 of the hook 240 are against each other to pull and drive the closing slide to slide in the radial groove. By rotating the second ring cover in one direction, the second rotating ring drives the two ends of the pulling rope to rotate and converge in the line cavity at the same time, so as to drive the closing slide to slide in the radial groove, giving a thrust to the wound skin to close and promote wound healing.

[0059] Furthermore, the top surface of the hook head extends horizontally outward to form a locking piece 242. The locking column group 234 includes a first locking column and a second locking column that clamp the hook head in the circumferential forward and reverse directions and match the locking piece 242. The top surfaces of the first locking column and the second locking column are both against the bottom surface of the locking piece 242, which is convenient for the vertical assembly and positioning of the closed slide 24. The hook head 240 includes a closed hook column 243 perpendicular to the closed slide, a locking piece 242 fixed to the top of the closed hook column 243, and a locking hook 241 located at the bottom surface of the locking piece 242. The locking piece 242 is arranged parallel to the closed slide 24, and the spacing between the locking hook and the closed hook column is not less than the diameter of the pulling rope. The pulling rope penetrates the hook head from the vertical gap between the locking hook and the closed slide to lock and position. The hook head is made of elastic material.

[0060] The assembly method of the closed ring seat is as follows: after the two ends of the pulling rope with the closed slide are fixed to the second rotating ring respectively, the second rotating ring is clamped in the second base at an angle relative to the wiring hole and the outlet, and then the second ring cover is plugged into the second rotating ring to complete the assembly of the closed ring seat; and then the first base is plugged into the second ring cover to complete the assembly of the device. When in use, the second ring cover is rotated in one direction, and the pulling rope is positioned and tightened by the turning point of rotation, and gradually tightened and straightened in the opening area formed by the closed ring seat to form an isosceles triangle, so as to drive the closed slide to approach the wound.

[0061] In the catheter fixing device with a wound closing ring seat of the present invention, the outer surface of the first ring cover and the outer surface of the second ring cover are made of materials with different hand feels, and the user is reminded of the functional partitions through touch feedback; or one of the outer side wall of the first ring cover and the outer side wall of the second ring cover is a smooth outer wall, and the other outer side wall is distributed with convex or concave patterns.

[0062] The bottom of the first base 13 extends radially outward horizontally to form an extension platform, which protrudes outward from the first ring cover assembly and the second ring cover 21 assembly, and a plurality of anti-slip protrusions are arranged circumferentially on the outer wall of the extension platform.

[0063] like Figure 2 As shown, the first ring cover assembly is detachably connected with a catheter protection cover 4, the outer diameter of which matches the outer diameter of the first cover assembly 11, and the catheter protection cover 4 is provided with an outlet for the catheter to pass through in a direction parallel to the skin after bending, and a plurality of soft teeth 40 for horizontal positioning of the catheter are arranged circumferentially at the outlet. The catheter protection cover can be used for patients to shower or for waterproofing wounds, and the soft teeth horizontally position the catheter to prevent the catheter from moving up and down, and the catheter protection cover is made of a transparent material for easy observation.

[0064] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A catheter fixing device with a wound closing ring seat, comprising a fixing ring seat (1) for fixing the catheter and a closing ring seat (2) for closing the wound, the fixing ring seat (1) and the closing ring seat (2) being arranged concentrically, characterized in that: The fixed ring seat (1) comprises a first ring cover assembly and a first base (13), wherein the upper end surface of the first base (13) is rotatably connected to the first ring cover assembly; The fixed ring seat (1) further comprises at least two flexible hoop strips (10) for fixing the catheter, and two ends of the flexible hoop strips (10) are respectively connected to the first ring cover assembly and the first base (13); The closed ring seat (2) comprises a second ring cover assembly and a second base (23), the upper end surface of the second base (23) being rotatably connected to the second ring cover assembly; the second base (23) is provided with no less than two closed slides (24), the closed slides (24) being provided with a pulling rope (26) which rotates with the second ring cover assembly to drive the closed slides (24) to slide toward the center of the closed ring seat (2), and both ends of the pulling rope (26) are fixedly connected to the second ring cover assembly; The first base (13) is connected to the second ring cover assembly, and the first ring cover assembly rotates independently relative to the catheter fixing device.

2. The catheter fixation device with a wound closure ring seat according to claim 1, characterized in that: The lower end surface of the closed ring seat (2) is connected to a skin adhesive layer (3), and the skin adhesive layer (3) forms an opening (31) in the area defined by the closed ring seat (2).

3. The catheter fixing device with a wound-closing ring seat according to claim 1, characterized in that: The first ring cover assembly comprises a first ring cover (11) and a first rotating ring (12), wherein the first ring cover (11) is covered on the first rotating ring (12) and rotates synchronously therewith; The upper end surface of the first base (13) is provided with a first ring groove for rotatably mounting the first rotating ring (12), and the outer wall of the first ring groove is provided with a first ratchet tooth (131); the first rotating ring (12) is connected with a movable pawl (121) having a first tooth (1211); the movable pawl (121) is also connected with a linkage member (1212) for driving the movable pawl (121) to move between a first position and a second position; in a one-way locking state, the movable pawl (121) is located at the first position. The movable pawl (121) is moved to a first position so that the first tooth (1211) is meshed with the first ratchet tooth (131), and the first rotating ring (12) is locked at any position after unidirectional rotation relative to the first base (13); in the unlocked state, the linkage member (1212) drives the movable pawl (121) to move to a second position so that the first tooth (1211) is disengaged from the first ratchet tooth (131), so as to release the lock and allow the first rotating ring (12) to rotate in the opposite direction relative to the first base (13).

4. The catheter fixation device with a wound closure ring seat according to claim 3, characterized in that: An inner side wall of the first rotating ring (12) is further connected with a first step (122) extending horizontally inwards. A plurality of first positioning buckles (133) are circumferentially distributed at a position of the first base (13) opposite to the first step (122); the first positioning buckles (133) are clamped and matched with the first step (122), and the plurality of first positioning buckles (133) are circumferentially arranged to serve as an inner side wall of the first annular groove.

5. The catheter fixing device with a wound closing ring seat according to claim 3, characterized in that: A wire groove (124) is reserved on the first rotating ring (12). A fixing wire hole (134) is formed in an upper end surface of the first base (13), and the fixing wire hole (134) is located between the wire groove (124) and the center of the fixing ring seat (1); one end of the flexible strap (10) is fixedly connected to the wire groove (124), and the other end is fixedly connected to the fixing wire hole (134).

6. The catheter fixing device with a wound closing ring seat according to claim 1, characterized in that: The second ring cover assembly includes a second ring cover (21) and a second rotating ring (22). The second ring cover (21) that rotates synchronously with the second rotating ring (22) is covered on the second rotating ring (22); a second annular groove for rotatably mounting the second rotating ring (22) is formed in an upper end surface of the second base (23), and second ratchet teeth (231) are arranged on a side wall of the second annular groove; second teeth (221) meshing with the second ratchet teeth (231) are arranged on an outer wall of the second rotating ring (22), and the second rotating ring (22) is locked at any position after rotating relative to the second base (23).

7. The catheter fixing device with a wound closing ring seat according to claim 6, characterized in that: Two ends of the pulling rope (26) are respectively connected to different wiring holes (223) on the second rotating ring (22). A wire cavity (262) for the pulling rope (26) to pass through is reserved between the second rotating ring (22) and an inner side wall of the second annular groove. An outlet (260) for positioning a rotation inflection point of the pulling rope (26) is formed at an initial position of the second base (23) opposite to the wiring hole (223), and the outlet (260) is communicated with the wire cavity (262); one end of the pulling rope (26) passes out from the outlet (260), penetrates through the closing sliding piece (24), and then passes into the wire cavity (262) from the other outlet (260).

8. The catheter fixing device with a wound closing ring seat according to claim 1, characterized in that: A radial sliding groove (231) for the closing sliding piece (24) to slide along the closing ring seat (2) is formed by concaving upwards at the bottom of the second base (23). The closing sliding piece (24) is slidably connected to the radial sliding groove (231), and a lower end surface of the closing sliding piece (24) is located on the same horizontal plane as a bottom surface (230) of the second base; a hook head (240) for connecting the pulling rope (26) is connected to an end of the closing sliding piece (24) near the center of the closing ring seat.

9. The catheter fixing device with a wound closing ring seat according to claim 1, characterized in that: An extension platform extends horizontally outwards in a radial direction at the bottom of the first base (13). The extension platform protrudes outwards from the first ring cover assembly and the second ring cover assembly, and a plurality of anti-slip convex blocks are circumferentially arranged on an outer wall of the extension platform.

10. The catheter fixing device with a wound closing ring seat according to any one of claims 1-9, characterized in that, A conduit protection cover (4) is detachably connected to the first ring cover assembly.

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