Hemodialysis tube fixing device

Abstract

This utility model discloses a hemodialysis catheter fixing device, including a positioning plate and a limiting plate arranged at intervals, and a connecting strip connecting the positioning plate and the limiting plate. The bottom end of the positioning plate has an adhesive layer for bonding, and two positioning grooves arranged at intervals are protruding at the relatively central position of the top end of the positioning plate, respectively for the insertion of the venous tube and the arterial tube of the hemodialysis catheter, and a receiving space is formed between the adjacent groove walls of the two positioning grooves. The top ends of the positioning plate and the limiting plate are respectively provided with a first connecting part and a second connecting part for detachable connection, so that the limiting plate can be fastened to the positioning plate or removed from the positioning plate, thereby fixing the venous tube and the arterial tube, as well as their bends, inserted in the two positioning grooves between the positioning plate and the limiting plate. This device has a simple structure, is easy to use, and has a good positioning effect.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a hemodialysis catheter fixation device. Background Technology

[0002] When a patient's liver function is impaired, preventing the removal of toxins from the blood and leading to poisoning, artificial liver hemodialysis is a novel treatment for liver failure. Artificial liver hemodialysis involves drawing the patient's blood through a special tube, channeling it to an artificial liver for separation and filtration, and then returning the blood to the patient to achieve therapeutic goals. Establishing and maintaining a reliable vascular access is crucial for the successful implementation of artificial liver hemodialysis. Insertion of a temporary hemodialysis catheter via the internal jugular vein is the simplest, fastest, and safest central venous catheterization method, widely used in artificial liver treatment centers and blood purification centers at all levels. These catheters typically employ a double-lumen structure to allow for bidirectional blood circulation.

[0003] Currently, after hemodialysis catheter placement, the puncture site is mostly fixed with sutures, and 3M adhesive tape is used to fix the venous and arterial tubes. The two tubes are in direct contact with the human body, and the adhesion is not very strong. Normal patient activities can easily cause the adhesive tape to shift or fall off, resulting in poor fixation and easy displacement or dislodgement of the hemodialysis catheter. Therefore, medical staff need to frequently change the adhesive tape to ensure the fixation effect, which increases the workload of medical staff. In addition, frequent tape changes can cause patient discomfort and increase the risk of infection.

[0004] Furthermore, due to the relatively long double lumen of the hemodialysis catheter, in actual use, the venous and arterial tubes need to be folded back and fixed to the patient's skin. The process of securing the two tubes with adhesive tape is cumbersome. If the fixation is too tight, the bends can easily fold, affecting normal blood delivery; if the fixation is too loose, the stability cannot be effectively guaranteed, and the tubes are prone to dislodgement. In addition, the hemodialysis catheter is relatively exposed and fixed to the patient's neck, posing a risk of accidental removal, thus compromising the safety of its use.

[0005] Therefore, there is an urgent need for a hemodialysis catheter fixation device that is simple in structure, easy to use, has good fixation effect, and is highly adaptable to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a hemodialysis catheter fixation device that is simple in structure, easy to use, has a good fixation effect, and is highly adaptable.

[0007] To achieve the above objectives, this utility model discloses a hemodialysis tube fixing device. The hemodialysis tube fixing device includes a positioning plate and a limiting plate arranged at intervals, and a connecting strip connecting the positioning plate and the limiting plate. The bottom end of the positioning plate has an adhesive layer for bonding. Two positioning grooves arranged at intervals are protruding at the relative center position of the top end of the positioning plate, which are respectively used for the insertion of the venous tube and the arterial tube of the hemodialysis tube. An accommodating space is formed between the two adjacent groove walls of the two positioning grooves. The top ends of the positioning plate and the limiting plate are respectively provided with a first connecting part and a second connecting part for detachable connection, so that the limiting plate can be fastened to the positioning plate or removed from the positioning plate, so as to fix the venous tube and the arterial tube inserted in the two positioning grooves and their bent parts between the positioning plate and the limiting plate.

[0008] Preferably, the positioning plate is a flexible board, the main body of which is a foam board or a silicone board, and the shape of the positioning plate is quadrilateral, circular or elliptical.

[0009] Preferably, the positioning groove is arranged at an angle on the positioning plate, and the cross-sectional shape of the positioning groove is U-shaped or trapezoidal.

[0010] Preferably, the top side of the positioning plate has two strip-shaped protrusions arranged at an angle and spaced apart along its width direction. The positioning groove is formed by the top wall of the strip-shaped protrusions being recessed towards their bottom wall and penetrates the front and rear side walls of the strip-shaped protrusions.

[0011] Preferably, the length of the strip-shaped protrusion is less than or equal to the width of the positioning plate, and the width of the accommodating space corresponds to the width of the Y-shaped tube seat of the hemodialysis tube.

[0012] Preferably, the first connecting part and the second connecting part correspond to the hook side and the rough side of Velcro or the male and female snap fasteners of concealed fasteners.

[0013] Preferably, the first connecting portion is arranged on the positioning plate and located on the left and right opposite sides of the top surface of the positioning plate or between the left and right opposite sides of the top surface of the positioning plate and the two positioning grooves. The second connecting portion is arranged on the limiting plate and is arranged on the top surface of the limiting plate in correspondence with the first connecting portion or covers the entire top surface of the limiting plate.

[0014] Preferably, the connecting strip is arranged at the relative center position between the front end of the positioning plate and the rear end of the limiting plate, or, the connecting strip is connected to each of the left and right opposite sides of the front end of the positioning plate and the rear end of the limiting plate.

[0015] Preferably, at least one auxiliary strap is provided on the edge of at least one of the two opposite sides of the limiting plate. The auxiliary strap on one side can be detachably connected to the other side of the limiting plate after passing around the patient's neck, or can be detachably connected to itself after passing around the positioning part on the limiting plate. The auxiliary straps on both sides are arranged in pairs, and each pair of auxiliary straps approaches each other around the patient's neck to achieve a detachable connection.

[0016] Preferably, the limiting plate is provided with a miniature alarm at the opposite bottom end for issuing an alarm when the patient touches it.

[0017] Compared with the prior art, in the hemodialysis catheter fixing device of this utility model, on the one hand, the venous tube and arterial tube of the hemodialysis catheter are placed in the two positioning slots of the positioning plate. The venous tube and arterial tube do not directly contact the patient's skin, but are attached to the patient's skin through the adhesive layer attached to the positioning plate. The contact area between the positioning plate and the skin is relatively large and relatively flat, thereby effectively improving the firmness of the adhesive positioning. The positioning plate and the limiting plate, which are arranged at intervals, are connected by a connecting strip, so that the limiting plate can be easily and quickly fastened to the positioning plate or removed from the positioning plate. Thus, through the connection of the first connecting part and the second connecting part correspondingly provided on the positioning plate and the limiting plate, the venous tube and arterial tube, as well as their bends, placed in the two positioning slots are firmly fixed between the positioning plate and the limiting plate. The entire hemodialysis catheter fixing device has a simple structure, is easy to use, and has a good positioning effect. On the other hand, since the two positioning grooves protrude from the positioning plate and are arranged at intervals, a receiving space is formed between the two positioning grooves, making the device very flexible in use. In actual use, as needed, the Y-shaped tube seat of the hemodialysis tube can be received in the opposite front end of the receiving space. The venous tube and arterial tube can extend upward along the outer wall of the corresponding positioning groove in the receiving space, and bend towards the positioning groove at the opposite rear end of the receiving space to pass through the positioning groove, thereby passing out of the positioning groove under the guidance of the positioning groove and moving away from the device. This method of use can accommodate and fix the Y-shaped tube seat, venous tube, arterial tube, and their bends. In actual use, the Y-shaped tube seat of the hemodialysis tube can also be aligned and snapped into the front end of the two positioning grooves, with the venous tube and arterial tube correspondingly inserted into the two positioning grooves. The tubes are bent outward at the rear opening of the corresponding positioning grooves and extend downward along the outer wall of the corresponding positioning grooves to move away from the device. This method can also accommodate and fix the venous tube, arterial tube, and their bends, thus adapting to different usage needs, making it more flexible and adaptable. Attached Figure Description

[0018] Figure 1 This is a three-dimensional view of the hemodialysis tube of this utility model.

[0019] Figure 2 This is a perspective view of the first embodiment of the hemodialysis catheter fixation device of this utility model.

[0020] Figure 3 This is a cross-sectional view of the positioning plate of this utility model.

[0021] Figure 4 This is a perspective view of the positioning plate of this utility model.

[0022] Figure 5 This is a front view of one structure of the limiting plate of this utility model.

[0023] Figure 6 This is a back view of one structure of the limiting plate of this utility model.

[0024] Figure 7 This is a front view of another structure of the limiting plate of this utility model.

[0025] Figure 8 This is a rear view of another structure of the limiting plate of this utility model.

[0026] Figure 9 This is a front view of another structure of the limiting plate of this utility model.

[0027] Figure 10 This is a back view of another structure of the limiting plate of this utility model.

[0028] Figure 11 This is a perspective view of the second embodiment of the hemodialysis catheter fixation device of this utility model.

[0029] Figure 12 This is a perspective view of the third embodiment of the hemodialysis catheter fixation device of this utility model. Detailed Implementation

[0030] To explain the technical content and structural features of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0031] See Figure 1This utility model relates to fixing a hemodialysis catheter 200. In this application, the hemodialysis catheter 200 adopts a double-lumen structure, including a puncture tube 201, a tube seat 202, a venous tube 203, and an arterial tube 204. The venous tube 203 and the arterial tube 204 are respectively connected to the puncture tube 201 through the tube seat 202, thereby realizing bidirectional blood circulation. The upper end of the puncture tube 201 is mounted on the lower end of the tube seat 202, and the lower end of the puncture tube 201 is used to puncture deep into the patient's vein. The tube seat 202 is Y-shaped, and two symmetrically arranged positioning parts 2021 are protruding from the left and right opposite sides of the tube seat 202. The positioning parts 2021 have insertion holes for sutures. The tube seat 202 is sutured and fixed to the patient's neck through the two positioning parts 2021. The lower ends of the venous tube 203 and the lower ends of the arterial tube 204 are respectively installed on the upper ends of the Y-shaped tube seat 202. The upper ends of the venous tube 203 and the upper ends of the arterial tube 204 are connected to the purification and filtration device via connectors and catheters. The venous tube 203 and the arterial tube 204 are flexible tubes. In the prior art, the bends 2041 of the arterial tube 204 and 2031 of the venous tube 203 are often attached to the patient's skin with medical adhesive tape 300.

[0032] See Figures 1 to 12 This invention provides a hemodialysis catheter fixing device 100 for fixing a hemodialysis catheter 200. Generally, the hemodialysis catheter fixing device 100 provided by this invention includes a positioning plate 10 and a limiting plate 20 arranged at intervals, with a connecting strap 300 connecting the positioning plate 10 and the limiting plate 20. The bottom end of the positioning plate 10 has an adhesive layer 12 for adhesion, and the positioning plate 10 is adhered to the patient's skin through the adhesive layer 12 with a relatively large contact surface. Two positioning grooves 10a are protruding at the relatively central position of the top end of the positioning plate 10, arranged at intervals, for the insertion of the venous tube 203 and arterial tube 204 of the hemodialysis catheter 200, respectively. A receiving space 10b is also formed on the positioning plate 10 between the adjacent groove walls of the two positioning grooves 10a. The top ends of the positioning plate 10 and the limiting plate 20 are respectively provided with a first connecting part 40 and a second connecting part 50 for detachable connection, so that the limiting plate 20 can be fastened to the positioning plate 10 or removed from the positioning plate 10, so as to fix the venous tube 203 and the arterial tube 204, which are inserted in the two positioning grooves 10a, and their corresponding bending parts 2031 and bending parts 2041 between the positioning plate 10 and the limiting plate 20.

[0033] See below Figures 2 to 10 The specific structure of the first embodiment of the hemodialysis catheter fixing device 100 of this utility model will be described below: See Figures 2 to 4Specifically, in this embodiment, the positioning plate 10 is quadrilateral, circular, or elliptical in shape. The positioning plate 10 is a flexible plate, with its main body 11 being a foam board or silicone board. While firmly fitting the patient's neck, it also provides sufficient support, allowing the positioning groove 10a on it to effectively accommodate the venous tube 203 and the arterial tube 204. The adhesive layer 12 is specifically double-sided adhesive, its shape and size corresponding to the main body 11. Its top surface is bonded to the main body 11, and its bottom surface is used to bond to the patient's skin. When not in use, the bottom surface is also covered with protective release paper.

[0034] See Figures 2 to 4 Specifically, the cross-sectional shape of the positioning groove 10a is U-shaped or trapezoidal. Furthermore, the positioning groove 10a is arranged obliquely on the positioning plate 10. The top end of the positioning plate 10 has two strip-shaped protrusions 13 arranged obliquely and spaced apart along its lateral width. The positioning groove 10a is formed by the top wall of the strip-shaped protrusions 13 recessed towards its bottom wall, and penetrates the front and rear side walls of the strip-shaped protrusions 13, thus forming a front port and a rear port on the front and rear side walls of the strip-shaped protrusions 13 respectively. Specifically, the two strip-shaped protrusions 13 are specifically arranged on the body portion 11 and are integrally formed by a mold or bonded together by adhesive. Of course, the two strip-shaped protrusions 13 and the body portion 11 can also be a separate structure, specifically detachably connected by Velcro or other connecting parts, thereby facilitating adjustment of the spacing between the two strip-shaped protrusions 13 and their respective inclination angles as needed.

[0035] Specifically, in this embodiment, the length of the strip-shaped protrusion 13 is less than or equal to the width of the positioning plate 10, thereby adapting to different usage needs and making it more flexible and adaptable. Specifically, in this embodiment, the width of the accommodating space 10b corresponds to the width of the Y-shaped tube seat 202 of the hemodialysis tube 200, thereby facilitating the placement of the Y-shaped tube seat 202 in the accommodating space 10b and effectively covering and shielding the Y-shaped tube seat 202 at the puncture site.

[0036] See Figure 4Specifically, when the length of the strip-shaped protrusion 13 is less than the width of the positioning plate 10, one scenario is that a placement space 10c is formed between the two strip-shaped protrusions 13 and the positioning plate 10 at their respective front ends. This facilitates the placement of the Y-shaped tube seat 202, effectively covering and shielding the Y-shaped tube seat 202 at the puncture site. In this case, the venous tube 203 and the arterial tube 203 can be inserted into the positioning groove 10a from the front ports of the corresponding two positioning grooves 10a, and extend backward to bend outward and forward from the rear port of the corresponding positioning groove 10a to exit. They then extend forward along the outer wall of the corresponding positioning groove 10a to move away from the positioning plate 10, thereby accommodating and fixing the venous tube 203 and the arterial tube 204, as well as their bent portions 2031 and 2041, between the positioning plate 10 and the limiting plate 20.

[0037] Of course, at this time, the Y-shaped tube seat 202 can also be directly received in the opposite front end of the receiving space 10b. The venous tube 203 and the arterial tube 204 can extend backward along the outer wall of the corresponding positioning groove 10a in the receiving space 10b, and bend towards the positioning groove 10a at the opposite rear end of the receiving space 10b so as to enter the corresponding positioning groove 10a from the rear port and extend towards the front port of the positioning groove 10a, thereby passing out from the positioning groove 10a under the guidance of the positioning groove 10a to move away from the positioning plate 10. This can also realize the reception and fixation of the Y-shaped tube seat 202, the venous tube 203 and the arterial tube 204 and their bending portions 2031 and 2041 between the positioning plate 10 and the limiting plate 20. In another scenario, when the length of the strip-shaped protrusion 13 is less than the width of the positioning plate 10, a placement space 10d is formed between the relative rear ends of the two strip-shaped protrusions 13 and the positioning plate 10. The Y-shaped tube seat 202 is directly received in the relative front end of the accommodating space 10b. The venous tube 203 and the arterial tube 204 extend rearward along the outer wall of the corresponding positioning groove 10a within the accommodating space 10b, and bend towards the positioning groove 10a at the relative rear end of the accommodating space 10b, so as to enter the corresponding positioning groove 10a from the rear port and extend towards the front port of the positioning groove 10a. Thus, under the guidance of the positioning groove 10a, they pass out from the positioning groove 10a and move away from the positioning plate 10. This allows the Y-shaped tube seat 202, the venous tube 203 and the arterial tube 204, and their bent portions 2031 and 2041 to be received as close as possible between the positioning plate 10 and the limiting plate 20, resulting in a better positioning effect.

[0038] In another scenario, when the length of the strip-shaped protrusion 13 is less than the width of the positioning plate 10, a placement space 10c and a placement space 10d are formed between the relatively front and relatively rear ends of the two strip-shaped protrusions 13 and the positioning plate 10. In this case, the Y-shaped tube seat 202 can be accommodated in the placement space 10c located at the front end, and the venous tube 203 and the arterial tube 204 are inserted into the corresponding positioning grooves 10a, and bend outward from the rear end of the positioning grooves 10a and extend forward away from the positioning plate 10. However, the Y-shaped tube seat 202 is directly received at the opposite front end of the receiving space 10b. The venous tube 203 and the arterial tube 204 can extend rearward along the outer wall of the corresponding positioning groove 10a within the receiving space 10b, and bend towards the positioning groove 10a at the opposite rear end of the receiving space 10b, so as to enter the corresponding positioning groove 10a from the rear port, and extend towards the front port of the positioning groove 10a, thereby passing out from the positioning groove 10a under the guidance of the positioning groove 10a to move away from the positioning plate 10, so as to facilitate flexible use as needed.

[0039] See Figure 2 Specifically, when the length of the strip protrusion 13 is basically the same as the width of the positioning plate 10, the Y-shaped tube seat 202 of the hemodialysis tube 200 can be aligned and abutted against the front port of the two positioning grooves 10a. The venous tube 203 and the arterial tube 204 are inserted into the positioning groove 10a from the front port of the corresponding positioning groove 10a, and extend backward to bend outward from the rear port of the corresponding positioning groove 10a to pass through, and extend forward along the outer wall of the corresponding positioning groove 10a to move away from the positioning plate 10, so as to accommodate and fix the venous tube 203 and the arterial tube 204 and their bent portions 2031 and 2041 between the positioning plate 10 and the limiting plate 20. Of course, at this time, the Y-shaped tube seat 202 can also be directly received in the opposite front end of the receiving space 10b. The venous tube 203 and the arterial tube 204 extend backward along the outer wall of the corresponding positioning groove 10a in the receiving space 10b, and bend towards the positioning groove 10a at the opposite rear end of the receiving space 10b so as to enter the corresponding positioning groove 10a from the rear port and extend towards the front port of the positioning groove 10a, so as to pass out from the positioning groove 10a under the guidance of the positioning groove 10a and move away from the positioning plate 10. This can also realize the reception and fixation of the Y-shaped tube seat 202, the venous tube 203 and the arterial tube 204 and their bending portions 2031 and 2041 between the positioning plate 10 and the limiting plate 20.

[0040] See Figures 2 to 4Specifically, in this embodiment, the first connecting portion 40 is arranged on the positioning plate 10, and the second connecting portion 50 is arranged on the limiting plate 20. The first connecting portion 40 is located on the left and right opposite sides of the top surface of the positioning plate 10, or at a position between the left and right opposite sides of the top surface of the positioning plate 10 and the two positioning grooves 10a. Correspondingly, the second connecting portion 50 is arranged one-to-one with the first connecting portion 40 on the top surface of the limiting plate 20, or the second connecting portion 50 covers the entire top surface of the limiting plate 20. Specifically, the first connecting part 40 includes an outer connecting part 41 and an inner connecting part 42. The two outer connecting parts 41 are arranged one-to-one on the left and right opposite sides of the top surface of the positioning plate 10 and are located on the side where the two positioning grooves 10a are far apart from each other. The inner connecting part 42 is arranged at the relative center position of the top surface of the positioning plate 10 and is located between the two positioning grooves 10a. Through the connection between the outer connecting parts 41 and the inner connecting parts 42 and the second connecting part 50, the vein tube 203 and arterial tube 204 between the positioning plate 10 and the limiting plate 20, as well as their bends 2031 and 2041, are firmly fixed.

[0041] Specifically, the first connecting part 40 and the second connecting part 50 correspond to the hook and loop sides of Velcro. By bonding the first connecting part 40 and the second connecting part 50, which are configured as hook and loop sides, to the snap-fit ​​surfaces of the positioning plate 10 and the limiting plate 20, annular limiting structures are formed to fix the venous tube 203 and the arterial tube 204, respectively, thus strengthening the fixation. The entire hemodialysis tube fixing device 100 has a simple structure, is easy to operate, and has low manufacturing cost. Furthermore, the bonding surface area of ​​this connecting structure is relatively large, resulting in high positioning stability and facilitating precise fixation of the dual tube bodies and their bends. Of course, the first connecting part 40 and the second connecting part 50 can also be a male and female snap fastener.

[0042] See Figure 2 Specifically, in this embodiment, the connecting strip 30 is sewn onto the front end of the positioning plate 10 and the rear end of the limiting plate 20, and is located at their relative center. There is one connecting strip 30. The connecting strip 30 is relatively narrow, with a width smaller than the width of the positioning groove 10a. The connecting strip 30 has a certain degree of elasticity, thereby increasing its applicability.

[0043] See Figure 2Specifically, in this embodiment, a miniature alarm 60 (shown as a dashed line in the figure due to obstruction) is provided on the opposite bottom end of the limiting plate 20, used to sound an alarm when a patient touches it. Specifically, the miniature alarm 60 includes a battery, a sensor switch, a sound alarm, and a wireless transmission device. The battery, sensor switch, sound alarm, and wireless transmission device form a series circuit. The wireless transmission device connects to a wireless alarm device carried by medical personnel via infrared or electromagnetic waves. When a patient touch is detected, the miniature alarm 60 is activated, emitting an alarm sound to warn of the possibility of unplanned extubation. Medical personnel who hear the alarm can arrive promptly to prevent the patient from extubating, thereby improving safety.

[0044] See Figure 2 , Figures 5 to 10 Specifically, in this embodiment, at least one auxiliary strap 70 is provided on at least one edge of each of the two opposite sides of the limiting plate 20. The auxiliary strap 70 on one side can be detachably connected to the other side of the limiting plate 20 after wrapping around the patient's neck, or can be detachably connected to itself after wrapping around the positioning part on the limiting plate 20 and then folding back. The auxiliary straps 70 on both sides are arranged in pairs, with each pair of auxiliary straps 70 wrapping around the patient's neck and approaching each other to achieve a detachable connection. The auxiliary strap 70 is a cotton or nylon strap, and its color is not limited. It is used to strengthen the connection between the entire hemodialysis catheter fixation device 100 and the patient, further improving the stability of the connection. The auxiliary strap 70 has sufficient length and a certain degree of elasticity to accommodate different patients. Furthermore, depending on the specific structure and the connection relationship with the limiting plate 20, the auxiliary strap 70 has the following structures: See Figure 2 Specifically, one structure of the auxiliary strap 70 is as follows: at least two auxiliary straps 70 are arranged in pairs at the left and right opposite edges of the limiting plate 20, and each pair of auxiliary straps 70 is detachably tied together. The auxiliary straps 70 are either ropes or bandages. In use, each pair of auxiliary straps 70 is wrapped around the patient's neck and brought close together to tie.

[0045] See Figure 5 and Figure 6 Specifically, another structure of the auxiliary tape 70 is as follows: at least two auxiliary tapes 70 are arranged in pairs at the opposite edges of the left and right sides of the limiting plate 20, and each pair of auxiliary tapes 70 is detachably bonded. A third connecting portion 71 and a fourth connecting portion 72 for detachable bonding are correspondingly arranged on each pair of auxiliary tapes 70. Specifically, the third connecting portion 71 and the fourth connecting portion 72 correspond to the rough side and hook side of the Velcro. It should be noted that, for ease of understanding, the attached... Figure 5 and attached Figure 6In the diagram, the obscured third connecting part 71 and fourth connecting part 72 are indicated by dashed lines. In use, each pair of auxiliary straps 70 is wrapped around the patient's neck and brought close together, and then bonded together by the correspondingly arranged third connecting part 71 and fourth connecting part 72.

[0046] See Figure 7 and Figure 8 Specifically, another structure of the auxiliary tape 70 is as follows: at least one auxiliary tape 70 is provided on the opposite left side of the limiting plate 20, and a third connecting part 71 and a fourth connecting part 72 for detachable connection are provided on the opposite top side of the free end away from the limiting plate 20 and the opposite right side of the opposite bottom side of the limiting plate 20. Specifically, the third connecting part 71 and the fourth connecting part 72 correspond to the rough side and hook side of the Velcro.

[0047] See Figure 9 and Figure 10 Specifically, another structure of the auxiliary strap 70 is as follows: at least one auxiliary strap 70 is provided on the opposite left side of the limiting plate 20, and a positioning part 73 corresponding to the width dimension of the auxiliary strap 70 is provided on the opposite bottom end of the limiting plate 20. The positioning part 73 is specifically a positioning ring. A third connecting part 71 and a fourth connecting part 72 for detachable connection are provided on the opposite top and bottom ends of the free end away from the limiting plate 20. Specifically, the positioning ring can be an elastic ring, sewn onto the positioning plate 10, specifically sewn onto the main body 11. In use, the free end of the auxiliary strap 70 wraps around the patient's neck to approach the opposite right side of the limiting plate 20, passes through the positioning ring, and then folds back to detachably connect with itself, thereby quickly connecting for subsequent efficient fixation.

[0048] See Figure 11 In the second embodiment of the hemodialysis catheter fixing device 100 of this utility model, the main difference from the first embodiment lies in the number and layout of the connecting straps 30. In this embodiment, a connecting strap 30 is connected to each of the two opposite sides of the front end of the positioning plate 10 and the rear end of the limiting plate 20, thereby not only strengthening the stability of the connection between the positioning plate 10 and the limiting plate 20, but also providing a relatively large clearance space to facilitate the placement of the Y-shaped tube seat 202. The other structures of the hemodialysis catheter fixing device 100 in this embodiment are roughly the same as those in the first embodiment, and will not be described again here.

[0049] See Figure 12In the third embodiment of the hemodialysis catheter fixing device 100 of this utility model, the main difference from the first embodiment lies in the number and layout of the connecting straps 30. In this embodiment, the connecting strap 30 between the front end of the positioning plate 10 and the rear end of the limiting plate 20 is relatively wider. Its width is smaller than the length of the positioning plate 10, but larger than the sum of the width of the two positioning grooves 10a and the distance between them. Furthermore, a clearance hole 30a is provided at the relative center position of the connecting strap 30, thereby not only enhancing the stability of the connection between the positioning plate 10 and the limiting plate 20, but also providing a relatively large clearance space to facilitate the placement of the Y-shaped tube seat 202. The other structures of the hemodialysis catheter fixing device 100 in this embodiment are roughly the same as those in the first embodiment, and will not be described again here.

[0050] The following combination Figures 1 to 12 The working principle of the hemodialysis catheter fixing device 100 of this utility model is explained below: In use, after the catheter is inserted, the puncture site is fixed with a transparent dressing. The positioning plate 10 is then attached to the neck near the earlobe, depending on the patient's catheter placement. As needed, the Y-shaped tube seat 202, the venous tube 203, and the arterial tube 204 are placed in the receiving space 10b and the two positioning grooves 10a, respectively. The venous tube 203 and arterial tube 204 at the rear end of the positioning groove 10a are bent accordingly, thus passing through the positioning groove 10a and away from the positioning plate 10 under the guidance of the positioning groove 10a or its outer wall. Then, the limiting plate 2... The Y-shaped tube seat 202, venous tube 203, and arterial tube 204, along with their bends 2031 and 2041, are fastened to the positioning plate 10 and fixed between the positioning plate 10 and the limiting plate 20 through the first connecting part 40 and the second positioning part 50. Then, the tightness of the auxiliary strap 70 is adjusted according to the patient's comfort, and the auxiliary strap 70 is tied around the patient's neck. During use, the miniature alarm 60 will sound an alarm when the patient touches it, reminding the patient of the possibility of unplanned extubation.

[0051] Compared with the prior art, in the hemodialysis catheter fixing device 100 of this utility model, on the one hand, the venous tube 203 and arterial tube 204 of the hemodialysis catheter 200 are inserted into the two positioning grooves 10a of the positioning plate 10. The venous tube 203 and arterial tube 204 do not directly contact the patient's skin, but are adhered to the patient's skin through the adhesive layer 12 attached to the positioning plate 10. The contact area between the positioning plate 10 and the skin is relatively large and relatively flat, thereby effectively improving the firmness of the adhesive positioning. Combined with the positioning plates 10 and the limiting plate 20 arranged at intervals, The connecting strap 30 allows the limiting plate 20 to be easily and quickly fastened to or removed from the positioning plate 10. Through the connection of the first connecting part 40 and the second connecting part 50 correspondingly provided on the positioning plate 10 and the limiting plate 20, the venous tube 203 and the arterial tube 204, which pass through the two positioning grooves 10a, as well as their bent parts 2031 and 2041, are firmly fixed between the positioning plate 10 and the limiting plate 20. The entire hemodialysis tube fixing device 100 has a simple structure, is easy to use, and has a good positioning effect. On the other hand, since the two positioning grooves 10a protrude from the positioning plate 10 and are arranged at intervals, a receiving space 10b is formed between the two positioning grooves 10a, making the device very flexible in use. In actual use, as needed, the Y-shaped tube seat 202 of the hemodialysis tube 200 can be snapped into the opposite front end of the receiving space 10b, and the venous tube 203 and arterial tube 204 can extend upward along the outer wall of the corresponding positioning groove 10a within the receiving space 10b, and bend towards the positioning groove 10a at the opposite rear end of the receiving space 10b to pass through the positioning groove 10a, thereby passing out of the positioning groove 10a under the guidance of the positioning groove 10a and moving away from the device. This method of use can... The Y-shaped tube seat 202, the venous tube 203 and the arterial tube 204, as well as their bends 2031 and 2041, are all contained and fixed. In actual use, the Y-shaped tube seat 202 of the hemodialysis tube 200 can also be aligned and snapped into the front port of the two positioning grooves 10a. The venous tube 203 and the arterial tube 204 are respectively inserted into the two positioning grooves 10a and bend outward at the rear port of the corresponding positioning groove 10a, and extend forward along the outer wall of the corresponding positioning groove 10a to move away from the device. The venous tube 203 and the arterial tube 204, as well as their bends 2031 and 2041, can also be contained and fixed, thereby adapting to different usage needs, making the use more flexible and adaptable.

[0052] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall fall within the scope of the present utility model.

Claims

1. A hemodialysis catheter fixation device, characterized in that, The hemodialysis catheter fixing device includes a positioning plate and a limiting plate arranged at intervals, and a connecting strip connecting the positioning plate and the limiting plate. The bottom end of the positioning plate has an adhesive layer for bonding. Two positioning grooves arranged at intervals are protruding at the relative center position of the top end of the positioning plate, which are respectively used for the insertion of the venous tube and the arterial tube of the hemodialysis catheter. An accommodating space is formed between the two adjacent groove walls of the two positioning grooves. The top ends of the positioning plate and the limiting plate are respectively provided with a first connecting part and a second connecting part for detachable connection, so that the limiting plate can be fastened to the positioning plate or removed from the positioning plate, so as to fix the venous tube and the arterial tube inserted in the two positioning grooves and their bends between the positioning plate and the limiting plate.

2. The hemodialysis catheter fixation device according to claim 1, characterized in that, The positioning plate is a flexible board, and its main body is a foam board or a silicone board. The positioning plate is quadrilateral, circular or elliptical in shape.

3. The hemodialysis catheter fixation device according to claim 1, characterized in that, The positioning groove is arranged at an angle on the positioning plate, and the cross-sectional shape of the positioning groove is U-shaped or trapezoidal.

4. The hemodialysis catheter fixation device according to claim 3, characterized in that, The top side of the positioning plate has two strip-shaped protrusions that are inclined and spaced apart along its horizontal width. The positioning groove is formed by the top wall of the strip-shaped protrusions being recessed towards its bottom wall and penetrates the front and rear side walls of the strip-shaped protrusions.

5. The hemodialysis catheter fixation device according to claim 4, characterized in that, The length of the strip-shaped protrusion is less than or equal to the width of the positioning plate, and the width of the accommodating space corresponds to the width of the Y-shaped tube seat of the hemodialysis tube.

6. The hemodialysis catheter fixation device according to claim 1, characterized in that, The first connecting part and the second connecting part correspond to the hook side and the rough side of the Velcro or the male and female snaps of the concealed fastener.

7. The hemodialysis catheter fixation device according to claim 6, characterized in that, The first connecting part is arranged on the positioning plate and is located on the left and right opposite sides of the top surface of the positioning plate or between the left and right opposite sides of the top surface of the positioning plate and the two positioning grooves. The second connecting part is arranged on the limiting plate and is arranged on the top surface of the limiting plate in correspondence with the first connecting part or covers the entire top surface of the limiting plate.

8. The hemodialysis catheter fixation device according to claim 1, characterized in that, The connecting strip is arranged at the relative center position of the front end of the positioning plate and the rear end of the limiting plate, or the connecting strip is connected to each of the left and right opposite sides of the front end of the positioning plate and the rear end of the limiting plate.

9. The hemodialysis catheter fixation device according to claim 1, characterized in that, At least one auxiliary strap is provided on the edge of at least one of the two opposite sides of the limiting plate. The auxiliary strap on one side can be detachably connected to the other side of the limiting plate after passing around the patient's neck, or can be detachably connected to itself after passing around the positioning part on the limiting plate. The auxiliary straps on both sides are arranged in pairs, and each pair of auxiliary straps approaches each other around the patient's neck to achieve a detachable connection.

10. The hemodialysis catheter fixation device according to claim 1, characterized in that, The limiting plate is equipped with a miniature alarm at its opposite bottom end, which is used to sound an alarm when the patient touches it.

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