An absorbable exudate-impervious catheter sheath securing device

Abstract

The application discloses a catheter sheath fixing device capable of absorbing exudate, relates to the technical field of medical auxiliary equipment, and comprises a binding assembly, the binding assembly is arranged on the fixer, a plurality of connecting rods are connected to the fixer, the connecting rods are slidably connected with sliding columns, the sliding columns are rotatably connected with ball bearings on the side away from the compression springs, and the ball bearings are fixedly connected with sponge suction cups used for adsorbing on the skin of a patient. The catheter sheath is fixed on the fixer, then the binding assembly is used to fix the device on the hand of the patient, the influence of sweat on the fixing effect of the catheter sheath can be avoided, meanwhile, the sponge suction cups are adsorbed on the hand of the patient, the fixing of the catheter sheath is reinforced, and the fixing effect of the catheter sheath is better.

Description

Technical Field

[0001] This invention relates to the field of medical auxiliary equipment technology, and in particular to a catheter sheath fixation device that can absorb exudate. Background Technology

[0002] When treating cardiovascular diseases, a small incision needs to be made in the patient to establish a channel to the target lesion. Then, a catheter sheath is inserted into the incision. This allows the catheter sheath to absorb medication and deliver it into the patient's body for treatment. After the catheter sheath is inserted into the incision, it needs to be secured with a fixation device.

[0003] Utility model patent with publication number CN217886743U discloses an infusion catheter placement and positioning structure, including a butterfly-shaped dressing with a base paper attached to the bottom end of the butterfly dressing, which serves to prevent dust and maintain the adhesion of the bottom side of the butterfly dressing; a catheter placement seat located in the middle of the outer wall of the butterfly dressing, with a sliding cavity on the inner wall of the bottom end of the catheter placement seat, and a limiting seat symmetrically slidably connected to the inner wall of the sliding cavity; a fixing post vertically connected to the top outer wall of the limiting seat; and fixing plates integrally connected to both sides of the catheter placement seat, with an oblong hole on the outer wall of the fixing plate, the fixing plate being snapped onto the top outer wall of the fixing post through the oblong hole.

[0004] When using the aforementioned patent, the catheter sheath is placed between the fixing clamps, and the inner walls of the fixing clamps and the insertion seat are interlocked to fix and limit the catheter sheath. Then, the adhesive is removed, and the fixing film is applied to the patient's skin. The catheter sheath is fixed by applying the film. After a period of fixation, if the patient sweats, the fixing film can easily detach from the patient's skin, causing the catheter sheath to detach from the patient's skin. Therefore, the fixation effect of this infusion catheter insertion and positioning structure is relatively poor. Now, a catheter sheath fixation device that can absorb exudate and strengthen the fixation of the catheter sheath with better fixation effect is being developed. Summary of the Invention

[0005] To overcome the shortcomings of existing infusion catheter placement and positioning structures in terms of poor catheter sheath fixation, the technical problem to be solved is to provide a catheter sheath fixation device that can absorb exudate and enhances the fixation effect of the catheter sheath.

[0006] The technical solution is: a catheter sheath fixation device that can absorb exudate, including an adhesive pad, with symmetrically arranged support pillars connected to the top of the adhesive pad, a fixator connected between the support pillars, and symmetrically arranged locking buckles rotatably connected to the fixator. The locking buckles and the fixator engage with each other. It also includes a binding assembly disposed on the fixator for binding the fixator to the patient's hand. The fixator is connected to multiple connecting rods, with sliding posts slidably connected to the connecting rods. A compression spring is connected between the top of the sliding post and the connecting rod, and a ball bearing is rotatably connected to the side of the sliding post away from the compression spring. The ball bearing is fixedly connected to a sponge suction cup for adsorbing onto the patient's skin.

[0007] The binding assembly includes a first wristband connected to the retainer, a second wristband connected to the retainer on the side away from the first wristband, a connector on the side of the second wristband away from the retainer, the connector having symmetrically arranged square grooves, the connector being slidably connected to a limit member, the limit member engaging with the square groove, and the connector being rotatably connected to an adjusting screw, the adjusting screw being threadedly connected to the limit member.

[0008] Furthermore, the catheter sheath fixation device that can absorb exudate also includes a fixation seat, which is connected to the side of the fixator. The fixation seat is rotatably connected to a rotating rod, and a rotating plate is rotatably connected to the side of the rotating rod away from the fixation seat. A first adhesive block for fixing the catheter sheath to the patient's hand is rotatably connected to the side of the rotating plate away from the rotating rod. A drive assembly for automatically fixing the catheter sheath by driving the first adhesive block is provided between the latch and the rotating rod.

[0009] Furthermore, the drive assembly includes a rack connected to one of the latches, and the rotating rod is connected to the gear near the rack, the gear meshing with the rack.

[0010] Furthermore, the catheter sheath fixation device for absorbing exudate also includes a fastening member connected to the fixator. The fastening member is connected to a flexible connecting frame via a pivot on the side away from the fixator. The flexible connecting frame is connected to symmetrically arranged pull ropes, and the pull ropes are connected to multiple elastic bands. The elastic bands are connected to the flexible connecting frame, and the flexible connecting frame is provided with multiple adhesive components for attaching the elastic bands to the patient's hand.

[0011] Furthermore, the adhesive assembly includes multiple sliding members, which are slidably connected to the flexible connecting frame. A connecting spring connects the sliding members and the flexible connecting frame. A fixed circular block is rotatably connected to the side of the sliding member away from the connecting spring. A second adhesive block is connected to the top of the fixed circular block.

[0012] Furthermore, the catheter sheath fixing device that can absorb exudate also includes grooved clips, which are symmetrically connected to the latches. A guide is connected to the side of the fixing device near the connecting rod. The guide is rotatably connected to a limit frame. The grooved clips are provided with inclined surfaces. The limit frame and the grooved clips are engaged. Symmetrically arranged reset torsion springs are connected between the limit frame and the guide.

[0013] Furthermore, the catheter sheath fixing device that can absorb exudate also includes an L-shaped frame, which is connected to the side of the fixing member near the flexible connecting frame. The L-shaped frame is slidably connected to a limiting member, and a limiting spring is connected between the limiting member and the L-shaped frame. The flexible connecting frame is connected to a limiting disc via a rotating shaft. The bottom of the limiting disc has a groove, and the groove and the limiting member engage in a locking fit.

[0014] Furthermore, the catheter sheath fixing device that can absorb exudate also includes an L-shaped component, which is connected to the rotating rod on the side near the rotating plate. The L-shaped component is threadedly connected to the limiting screw, and the limiting screw on the side near the rotating plate is connected to the limiting disc. The limiting disc and the rotating plate are in a pressing fit.

[0015] Furthermore, the catheter sheath fixation device that can absorb exudate also includes multiple rubber blocks, each of which is connected to the first wristband and the second wristband.

[0016] The beneficial effects are as follows: 1. By fixing the catheter sheath to the fixator and then using the binding assembly to fix the device to the patient's hand, the present invention can avoid the sweat from affecting the fixation effect of the catheter sheath. At the same time, the sponge suction cup can be used to adhere to the patient's hand to strengthen the fixation of the catheter sheath, making the fixation effect of the catheter sheath better.

[0017] 2. The present invention, by locking the catheter sheath by rotating the latch, allows the first adhesive block to swing downward and automatically fix the catheter sheath to the patient's hand through the cooperation between the rack and gear, thereby reinforcing the catheter sheath.

[0018] 3. The present invention uses a second adhesive block to adhere to the patient's skin, so that the pull cord and elastic band are wrapped around the adhesive pad and the catheter sheath, thereby further reinforcing the catheter sheath.

[0019] 4. During the process of locking the buckle onto the fixator, the present invention can strengthen the fixation of the catheter sheath through the snap-fit ​​between the slotted clip and the limiting frame.

[0020] 5. When the flexible connecting frame swings backward, the limiting disc will rotate. By locking the limiting member into the groove of the limiting disc, the position of the flexible connecting frame can be strengthened and the catheter sheath can be reinforced. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a three-dimensional structural diagram of the adhesive pad, support column, and fastener components of the present invention.

[0023] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention.

[0024] Figure 4 This is a cross-sectional view of the connecting parts, adjusting screw, and limiting parts of the present invention.

[0025] Figure 5 This is a three-dimensional structural diagram of the connecting rod, sliding column, and compression spring of the present invention.

[0026] Figure 6 This is a three-dimensional structural diagram of the first adhesive block, rotating plate, and rotating rod of the present invention.

[0027] Figure 7 This is a cross-sectional structural diagram of the rotating rod, fixed base, and gear of the present invention.

[0028] Figure 8 This is a three-dimensional structural diagram of the flexible connecting frame, pull rope, and elastic band components of the present invention.

[0029] Figure 9 This is a three-dimensional structural diagram of the second adhesive block, the fixed circular block, and the sliding component of the present invention.

[0030] Figure 10 This is a three-dimensional structural diagram of the slotted card, limiting frame, and guide components of the present invention.

[0031] Figure 11 This is a three-dimensional structural diagram of the flexible connecting frame, L-shaped frame, and limiting components of the present invention.

[0032] Figure 12 This is a three-dimensional structural diagram of the L-shaped frame, limiting member, and limiting disc of the present invention.

[0033] Figure 13 This is a three-dimensional structural diagram of the L-shaped component, the limiting screw, and the limiting disc of the present invention.

[0034] Reference numerals: 1_Adhesive pad, 11_Support, 12_Fixer, 13_Lock, 14_First wristband, 15_Second wristband, 16_Connector, 161_Square groove, 17_Adjusting screw, 18_Limiting element, 19_Rubber block, 110_Connecting rod, 111_Sliding column, 112_Compression spring, 113_Ball bearing, 114_Sponge suction cup, 2_First adhesive block, 21_Rotating plate, 22_Rotating rod, 23_Fixed base 24_Gear, 25_Rack, 3_Second Adhesive Block, 31_Fixed Round Block, 32_Sliding Part, 33_Connecting Spring, 34_Flexible Connecting Frame, 35_Pull Rope, 36_Elastic Band, 37_Fixed Connector, 4_Slotted Clip, 41_Limiting Frame, 42_Guide Part, 43_Reset Torsion Spring, 5_L-Shaped Frame, 51_Limiting Part, 52_Limiting Disc, 53_Limiting Spring, 6_L-Shaped Part, 61_Limiting Screw, 62_Limiting Disc. Detailed Implementation

[0035] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0036] Example 1: A catheter sheath fixation device capable of absorbing exudate, such as Figures 1-5As shown, the device includes an adhesive pad 1, support pillars 11, a retainer 12, a locking buckle 13, a binding assembly, a connecting rod 110, a sliding column 111, a compression spring 112, a ball bearing 113, and a sponge suction cup 114. Two support pillars 11 are fixedly connected to the top center of the adhesive pad 1. The retainer 12 is connected between the middle of the two support pillars 11. The locking buckles 13 are rotatably connected to both sides of the retainer 12. The locking buckles 13 and the retainer 12 engage in a snap-fit ​​mechanism, and the locking buckles 13 and the retainer 12 are used to secure the catheter sheath. The retainer 12 is equipped with... The fixing device 12 is provided with a binding assembly for securing the fixator 12 to the patient's hand. Connecting rods 110 are symmetrically connected to both sides of the fixator 12. Sliding posts 111 are slidably connected to the front and rear sides of the connecting rods 110. Compression springs 112 are connected between the upper part of the sliding posts 111 and the top of the connecting rods 110. The compression springs 112 are wound around the upper part of the sliding posts 111. Ball bearings 113 are rotatably connected to the bottom of each sliding post 111. The bottom of each ball bearing 113 is connected to… The device includes a sponge suction cup 114 for adhering to the patient's skin; the binding assembly includes a first wristband 14, a second wristband 15, a connector 16, an adjusting screw 17, a limiting member 18, and a rubber block 19. The first wristband 14 is connected to the left side of the fixator 12, and the second wristband 15 is connected to the right side of the fixator 12. The right side of the second wristband 15 is connected to the connector 16. Square grooves 161 are formed on both the front and rear sides of the upper part of the connector 16. The limiting member 18 is slidably connected to the connector 16. The limiting member 18 and the square groove 19 are connected to each other. The connector 16 is rotatably connected to the adjusting screw 17 at its front. The adjusting screw 17 and the limiting member 18 are threadedly connected at their front ends. By rotating the adjusting screw 17, the limiting member 18 is moved upward and inserted into the square groove 161 to bind the second wristband 15 and the first wristband 14 to the patient's hand, thus reinforcing the catheter sheath. Six rubber blocks 19 are evenly connected to the bottom of the first wristband 14 and the second wristband 15. The rubber blocks 19 increase the friction when they come into contact with the patient's skin, thus reinforcing the catheter sheath to the patient's skin.

[0037] After the catheter sheath is inserted into the incision, it needs to be secured. This can be achieved using a catheter sheath fixation device that absorbs exudate. The adhesive pad 1 is then applied to the patient's hand. During application, the sponge suction cup 114 contacts the patient's skin, and under the pressure of the compression spring 112, the sponge suction cup 114 adheres tightly to the patient's skin. Furthermore, the rotational connection between the ball bearing 113 and the sliding column 111 ensures the sponge suction cup 114 is more securely fixed to the patient's hand. This adhesion of the sponge suction cup 114 results in a tighter bond between the adhesive pad 1 and the patient's hand. To facilitate reinforcement of the catheter sheath, the catheter sheath is then inserted between the two supports 11. The two latches 13 are then rotated inwards and engaged with the retainer 12, securing the catheter sheath. Next, the first wristband 14 and the second wristband 15 are wrapped downwards around the patient's hand, with the left end of the first wristband 14 inserted into the connector 16, positioning it between the limiting member 18 and the square groove 161. The adjusting screw 17 is then manually rotated, causing the limiting member 18 to move upwards and engage with the square groove 161. This causes the limiting member 18 to compress the first wristband 14, allowing the first wristband 14 and... The second wristband 15 is securely tied to the patient's hand, which strengthens the fixation of the catheter sheath. Additionally, the rubber block 19 adheres to the patient's hand, increasing the friction between the first wristband 14, the second wristband 15, and the skin to further reinforce the catheter sheath and improve its fixation. Thus, even if excessive sweating reduces the adhesion of the adhesive pad 1, the binding effect between the first and second wristbands 14 and the suction effect of the sponge suction cup 114 prevent the catheter sheath from detaching from the patient's hand. When the catheter sheath is not in use and needs to be removed, the latches 13 are rotated outwards to open, thus securing the catheter sheath. The catheter sheath moves upward and separates from the support 11, allowing the catheter sheath to be removed. When removing the catheter sheath fixation device that absorbs exudate, first reverse the adjusting screw 17. The adjusting screw 17 then moves the limiting member 18 downward to reset and no longer jam the first wristband 14, thus disconnecting the first wristband 14 and the second wristband 15. Then, manually move the sliding column 111 upward to separate the sponge suction cup 114 from the patient's skin. The compression spring 112 is stretched, allowing the catheter sheath fixation device that absorbs exudate to be removed. After removal, release the sliding column 111. Under the action of the compression spring 112, the sliding column 111 and the sponge suction cup 114 move and reset.

[0038] Example 2: Based on Example 1, as follows Figures 6-7As shown, the catheter sheath fixation device that can absorb exudate also includes a first adhesive block 2, a rotating plate 21, a rotating rod 22, a fixing seat 23, and a drive assembly. The fixing seat 23 is fixedly connected to the left rear part of the fixator 12. The rotating rod 22 is rotatably connected to the rear part of the fixing seat 23 through a damping sleeve. The rotating plate 21 is rotatably connected to the rear part of the rotating rod 22. The first adhesive block 2 for fixing the catheter sheath to the patient's hand is rotatably connected to the rear part of the left latch 13 and the rotating rod 22. The drive assembly for driving the first adhesive block 2 to automatically fix the catheter sheath is provided between the rear part of the left latch 13 and the rotating rod 22. The drive assembly includes a gear 24 and a rack 25. The rack 25 is connected to the rear side of the left latch 13. The gear 24 is connected to the left side of the rotating rod 22. The gear 24 and the rack 25 mesh.

[0039] After the catheter sheath is secured, the rear of the catheter sheath may be curved or straight. To reinforce the catheter sheath, the rotating plate 21 and the first adhesive block 2 can be rotated and adjusted so that the rear of the catheter sheath can be secured using the first adhesive block 2. After the first adhesive block 2 is rotated and adjusted to match the curvature of the rear of the catheter sheath, the locking buckle 13 can be rotated inward to lock the catheter sheath. When the locking buckle 13 rotates, it will also drive the rack 25 to move. When the rack 25 and the gear 24 mesh, it will drive the gear 24 to rotate. The rotation of the gear 24 will drive the rotating rod 2. 2. When the rotating rod 22 swings downward, it causes the rotating plate 21 and the first adhesive block 2 to swing downward as well. When the first adhesive block 2 contacts the rear part of the catheter sheath, it can further adhere the rear part of the catheter sheath to the patient's skin, thereby achieving the purpose of automatically reinforcing the rear part of the catheter sheath. When people need to remove the catheter sheath, the locking buckle 13 is rotated to open. The locking buckle 13 drives the rack 25 to reset. The rack 25 drives the gear 24 to reverse. The gear 24 then drives the rotating rod 22, the rotating plate 21 and the first adhesive block 2 to swing upward to reset. The first adhesive block 2 then automatically releases the catheter sheath.

[0040] like Figures 8-9As shown, the catheter sheath fixation device for absorbing exudate also includes an adhesive assembly, a flexible connecting frame 34, pull ropes 35, elastic bands 36, and a fastener 37. The fastener 37 is connected to the middle of the front part of the fixator 12. The flexible connecting frame 34 is connected to the upper front part of the fastener 37 via a pivot. Pull ropes 35 are connected to both sides of the flexible connecting frame 34. Three elastic bands 36 are connected to each pull rope 35. The inner side of each elastic band 36 is connected to the flexible connecting frame 34. The adhesive assembly is symmetrically arranged on both sides of the flexible connecting frame 34. The adhesive assembly is used to secure the elastic bands 36. 6. The adhesive pad 1 is attached to the patient's hand and surrounded by the elastic band 36 to reinforce the catheter sheath. The adhesive assembly includes a second adhesive block 3, a fixing block 31, a sliding member 32, and a connecting spring 33. The sliding member 32 is symmetrically slidably connected to both sides of the flexible connecting frame 34. The connecting spring 33 is connected between the lower part of the sliding member 32 and the bottom of the flexible connecting frame 34. The connecting spring 33 is wound around the lower part of the sliding member 32. The fixing block 31 is rotatably connected to the upper part of the sliding member 32. The second adhesive block 3 is connected to the top of the fixing block 31.

[0041] After the adhesive pad 1 is applied to the patient's hand and the catheter sheath is secured using the fixator 12 and the buckle 13, the flexible connecting frame 34 can be rotated backward to further reinforce the catheter sheath. The left and right sides of the flexible connecting frame 34 are then wrapped downward around the patient's hand. At the same time, the flexible connecting frame 34 drives the pull cord 35 and the elastic band 36 to cover the adhesive pad 1 and the catheter sheath. After the adhesive pad 1 and the catheter sheath are covered and wrapped, the sliding member 32 is manually pressed. The connecting spring 33 deforms adaptively, causing the sliding member 32 to drive the second adhesive block 3 to adhere to the patient's skin. The second adhesive block 3 then secures the flexible connecting frame 34 to the patient's hand, thus further reinforcing the catheter sheath. Before removing the catheter sheath, the sliding member 32 is pulled to separate the second adhesive block 3 from the patient's skin. Then, the flexible connecting frame 34 is swung forward to reset, so that the pull cord 35 and the elastic band 36 no longer wrap around the adhesive pad 1 and the catheter sheath.

[0042] like Figure 10As shown, the catheter sheath fixing device that can absorb exudate also includes a grooved clip 4, a limiting frame 41, a guide 42, and a reset torsion spring 43. The grooved clip 4 is connected to both the front and rear sides of the latch 13. The guide 42 is symmetrically connected to both the front and rear sides of the fixator 12. The guide 42 is located above the connecting rod 110. The limiting frame 41 is rotatably connected to each guide 42. The grooved clip 4 has an inclined surface on its upper part. The limiting frame 41 and the grooved clip 4 engage with each other. The reset torsion spring 43 is connected between the left and right sides of the limiting frame 41 and the guide 42. By having the limiting frame 41 engage with the grooved clip 4, the fixation between the fixator 12 and the latch 13 can be strengthened.

[0043] When the latch 13 is rotated inward, the slotted clip 4 will also rotate. When the inclined surface of the slotted clip 4 contacts the limiting frame 41, the limiting frame 41 will swing outward, and the reset torsion spring 43 will be twisted. When the inclined surface of the slotted clip 4 separates from the limiting frame 41, the limiting frame 41 will rotate and reset under the action of the reset torsion spring 43, and the limiting frame 41 will then be inserted into the slotted clip 4. In this way, the latch 13 and the retainer 12 can be reinforced through the cooperation between the slotted clip 4 and the limiting frame 41, so as to reinforce the catheter sheath. If it is necessary to remove the catheter sheath, the limiting frame 41 can be manually swung outward and disengaged from the slotted clip 4, the reset torsion spring 43 will be twisted, and then the latch 13 can be rotated outward to open it. In this way, the latch 13 will drive the slotted clip 4 to reset, and people can release the limiting frame 41. Under the action of the reset torsion spring 43, the limiting frame 41 will rotate and reset.

[0044] like Figures 11-12 As shown, the catheter sheath fixing device for absorbing exudate also includes an L-shaped frame 5, a limiting member 51, a limiting disc 52, and a limiting spring 53. The L-shaped frame 5 is connected to the upper left front side of the fixing member 37. The limiting member 51 is slidably connected to the L-shaped frame 5. The limiting spring 53 is connected between the upper part of the limiting member 51 and the L-shaped frame 5. The limiting disc 52 is connected to the left rear part of the flexible connecting frame 34 through the left part of the rotating shaft. The bottom of the limiting disc 52 has a groove. The groove and the lower part of the limiting member 51 are engaged. When the flexible connecting frame 34 swings backward, it drives the limiting disc 52 to rotate. After the groove faces upward, the limiting member 51 moves down and is engaged in the groove of the limiting disc 52 to fix the flexible connecting frame 34.

[0045] Initially, the limiting spring 53 is in a stretched state. When the flexible connecting frame 34 swings backward, it drives the limiting disc 52 to rotate through the pivot. When the groove of the limiting disc 52 rotates to the top, under the action of the limiting spring 53, it will drive the limiting member 51 to move downward and lock into the groove. In this way, the limiting disc 52 can be restricted by the limiting member 51, thereby restricting the flexible connecting frame 34. This allows the pull rope 35 and the elastic band 36 to tightly wrap the catheter sheath, thereby reinforcing the catheter sheath. If it is necessary to rotate and open the flexible connecting frame 34, the limiting member 51 can be manually pulled upward, the limiting spring 53 is stretched, and the limiting member 51 will disengage from the groove. In this way, people can easily rotate and open the flexible connecting frame 34 forward.

[0046] like Figure 13 As shown, the catheter sheath fixing device that can absorb exudate also includes an L-shaped component 6, a limiting screw 61, and a limiting disc 62. The L-shaped component 6 is connected to the rotating rod 22 near the rotating plate 21. The limiting screw 61 is threadedly connected to the L-shaped component 6. The limiting disc 62 is connected to the limiting screw 61 near the rotating plate 21. The limiting disc 62 and the rotating plate 21 are in a pressing fit.

[0047] When adjusting the position of the first adhesive block 2, the direction of the adjusting plate 21 needs to be rotated to adjust the position of the first adhesive block 2. First, the limiting screw 61 is rotated to drive the limiting plate 62 to loosen the rotating plate 21. Then, the rotating plate 21 can be swung left and right to adjust the position of the first adhesive block 2 so that the first adhesive block 2 is consistent with the bending direction of the catheter sheath, so that the first adhesive block 2 can reinforce the catheter sheath. After the adjustment is completed, the limiting screw 61 is reversed to drive the limiting plate 62 to clamp the rotating plate 21. This locks the position of the first adhesive block 2 and prevents the first adhesive block 2 from rotating during the reinforcement of the catheter sheath, which would affect the fixation of the catheter sheath.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A catheter sheath fixation device for absorbing exudate, comprising an adhesive pad (1), the top of which is connected to symmetrically arranged support columns (11), and a fixator (12) connected between the support columns (11). The fixator (12) is rotatably connected to symmetrically arranged latches (13), the latches (13) and the fixator (12) engaging in a snap-fit ​​relationship. The device is characterized in that... It also includes a binding assembly disposed on the fixator (12) for binding the fixator (12) to the patient's hand; The fixator (12) has multiple connecting rods (110) symmetrically connected to both the left and right sides. The connecting rods (110) are slidably connected to sliding columns (111). A compression spring (112) is connected between the top of the sliding column (111) and the connecting rod (110). A ball bearing (113) is rotatably connected to the side of the sliding column (111) away from the compression spring (112). The ball bearing (113) is fixedly connected to a sponge suction cup (114) for adsorbing onto the patient's skin. The binding assembly includes a first wristband (14), a second wristband (15), a connector (16), a limiting member (18), and an adjusting screw (17). The first wristband (14) is connected to one side of the fixer (12). The second wristband (15) is connected to the side of the fixer (12) away from the first wristband (14). The connector (16) is provided on the side of the second wristband (15) away from the fixer (12). The connector (16) has symmetrically arranged square grooves (161) on both the front and rear sides of the upper part of the connector (16). The limiting member (18) is slidably connected inside the connector (16). The limiting member (18) and the square groove (161) are engaged. The adjusting screw (17) is rotatably connected to the front of the connector (16). The adjusting screw (17) and the limiting member (18) are threadedly connected to the front. The fixator (12) is fixed to a fixing seat (23) at the left rear. The fixing seat (23) is rotatably connected to a rotating rod (22) via a damping sleeve. The rotating rod (22) is rotatably connected to a rotating plate (21) at the rear. The rotating plate (21) is rotatably connected to a first adhesive block (2) for fixing the catheter sheath to the patient's hand. A drive assembly for automatically fixing the catheter sheath is provided between the rear of the left latch (13) and the rotating rod (22). The drive assembly includes a gear (24) and a rack (25). The rack (25) is connected to the rear side of the left latch (13). The gear (24) is connected to the left side of the rotating rod (22). The gear (24) and the rack (25) mesh. The fixator (12) has a fastener (37) connected to the middle of its front part. The upper front part of the fastener (37) is connected to a flexible connecting frame (34) via a pivot. The flexible connecting frame (34) has symmetrically arranged pull ropes (35) on both sides. Each pull rope (35) has three elastic bands (36) connected to it. The inner side of each elastic band (36) is connected to the flexible connecting frame (34). The flexible connecting frame (34) has multiple adhesive components symmetrically arranged on both sides. The adhesive components are used to attach the elastic bands (36) to the patient's hand. The adhesive components include... The device has a second adhesive block (3), a fixed round block (31), a sliding member (32), and a connecting spring (33). The flexible connecting frame (34) is symmetrically connected to the sliding member (32) on both the left and right sides. The connecting spring (33) is connected between the lower part of the sliding member (32) and the bottom of the flexible connecting frame (34). The connecting spring (33) is wound around the lower part of the sliding member (32). The fixed round block (31) is rotatably connected to the upper part of the sliding member (32). The second adhesive block (3) is connected to the top of the fixed round block (31). The latch (13) is connected to slotted clips (4) on both the front and rear sides. The retainer (12) is symmetrically connected to guides (42) on both the front and rear sides. The guides (42) are located above the connecting rod (110). Each guide (42) is rotatably connected to a limit frame (41). Each slotted clip (4) has an inclined surface on its upper part. The limit frame (41) and the slotted clip (4) are engaged. Each limit frame (41) is connected to a reset torsion spring (43) between its left and right sides and the guide (42). The upper left front side of the fixed connector (37) is connected to an L-shaped frame (5), and a limiting member (51) is slidably connected to the L-shaped frame (5). A limiting spring (53) is connected between the upper part of the limiting member (51) and the L-shaped frame (5). The left rear part of the flexible connector (34) is connected to a limiting disc (52) through a rotating shaft. The bottom of the limiting disc (52) has a groove, and the groove and the lower part of the limiting member (51) are engaged. An L-shaped part (6) is connected to the rotating rod (22) on the side near the rotating plate (21). A limiting screw (61) is threaded onto the L-shaped part (6). A limiting disc (62) is connected to the limiting screw (61) on the side near the rotating plate (21). The limiting disc (62) and the rotating plate (21) are in a pressing fit. The bottom of the first wristband (14) and the second wristband (15) are evenly connected with six rubber blocks (19).

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