Anti-pressure protection device for catheter

Abstract

The utility model discloses a catheter anti-pressure protection device which comprises a fixing film, an anti-pressure cover and a catheter fixing device, the fixing film is attached to the body of a patient and close to the joint of a catheter and the patient, the anti-pressure cover is arranged on the fixing film through an anti-pressure cover mounting frame, and the anti-pressure cover can be controlled to be opened and closed relative to the anti-pressure cover mounting frame. The catheter fixing device is arranged at one end of the anti-pressing cover mounting frame, a catheter penetrates through the anti-pressing cover through the catheter fixing device to make contact with a patient, and the catheter fixing tightness of the catheter fixing device can be controllably adjusted. The catheter fixing device has the advantages that the device is integrally fixed to the contact position of the catheter and a patient through the fixing film, fixing is convenient, the use cost is low, the catheter is supported through the anti-pressing cover arranged on the fixing film, the situation that the use effect is affected due to the fact that the catheter is pressed is prevented, the adjustable catheter fixing device is used for fixing the catheter connected with the patient, and unplanned catheter drawing of the patient is prevented; the adjustable locking mechanism in the catheter fixing device is used for fixing catheters of different specifications, using is convenient, and universality is high.

Description

Technical Field

[0001] This utility model specifically relates to a catheter anti-pressure protection device. Background Technology

[0002] In the medical field, catheters are used very commonly, especially in intensive care, surgery and long-term treatment. As an important tool for delivering drugs, nutrition or blood monitoring, the stability and safety of catheters are of paramount importance.

[0003] Currently, the following problems are commonly found in the use of catheters:

[0004] 1. Lack of pressure-resistant design: During use, especially when the patient moves, changes position, or is subjected to external pressure, the catheter is prone to bending or blockage. This not only affects the treatment effect but may also cause secondary harm to the patient.

[0005] 2. Risk of accidental dislodgement: Despite the established procedures, unconscious movements or struggles by the patient during treatment may still lead to the catheter being accidentally dislodged, increasing medical risks, affecting treatment, and potentially causing secondary harm to the patient.

[0006] To address the above issues, a device is needed that can ensure stable catheter fixation to prevent accidental extubation, while also preventing catheter compression and improving patient comfort.

[0007] Chinese Patent No. 202220880381.7, entitled "A Fixing Device for Central Venous Catheters in Hemodialysis," describes a device comprising a transparent waterproof dressing and a fixator. The fixator includes a base and a cover. The bottom surface of the base is tightly connected to the transparent waterproof dressing. The base has grooves for arterial catheters and venous catheters. Antibacterial transparent dressings are placed inside the grooves for arterial catheters and venous catheters. The groove walls of the grooves for arterial catheters and venous catheters are respectively connected to clamp grooves. The periphery of the surface of the base has a lower Velcro fastener. The base surface inside the lower Velcro fastener has a lower nonwoven fabric. The cover is rotatably connected to the base. The periphery of the bottom surface of the cover has an upper Velcro fastener that can be adhered to the lower Velcro fastener. The bottom surface of the cover inside the upper Velcro fastener has an upper nonwoven fabric.

[0008] As shown in the attached figure of patent 202220880381.7, the technical solution of this patent uses a transparent dressing to fix the device as a whole at the patient's catheter fixation point. The catheter is placed and fixed by the groove set on the base, which can play the role of preventing catheter removal and preventing unplanned catheter removal. However, the size of the catheter fixed by this technical solution is relatively simple and not applicable to various sizes of catheters, resulting in poor versatility. Utility Model Content

[0009] The technical problem to be solved by this utility model is that the existing catheters mentioned in the background art are easily affected by pressure during use, which affects their performance, and the catheters have poor fixation stability and are easily pulled out accidentally.

[0010] To address the aforementioned technical problems, a catheter anti-pressure protection device is proposed, achieved through the following technical solution: A catheter anti-pressure protection device includes a fixing film, an anti-pressure cap, and a catheter fixing device. The fixing film is applied to the patient's body, near the connection point between the catheter and the patient. The anti-pressure cap, used to prevent catheter compression, is mounted on the fixing film via an anti-pressure cap mounting bracket. The anti-pressure cap can be controllably opened and closed relative to the anti-pressure cap mounting bracket. The catheter fixing device is located at one end of the anti-pressure cap mounting bracket. The catheter passes through the anti-pressure cap and contacts the patient via the catheter fixing device. The tightness of the catheter fixing device can be controllably adjusted.

[0011] In a preferred embodiment of the present invention, the catheter fixation device includes a catheter fixation block, a locking mechanism, and an unlocking mechanism. The catheter is placed in a catheter placement slot within the catheter fixation block. The locking mechanism is connected to the catheter fixation block and can controllably fix the catheter placed in the catheter placement slot. The unlocking mechanism is connected to the catheter fixation block and can controllably release the catheter from the unlocking mechanism. The catheter fixation device facilitates the fixation of catheters of different specifications, preventing unplanned extubation by the patient.

[0012] In a preferred embodiment of the present invention, the conduit fixing block includes a push plate, an anti-slip plate, and a push plate groove. The push plate is connected to the anti-slip plate, and the push plate groove is connected to the conduit placement groove for placing the conduit. The push plate is placed in the push plate groove and connected to a locking mechanism. The spacing between the push plate and the conduit in the conduit placement groove can be controlled and adjusted by the locking mechanism.

[0013] In a preferred embodiment of the present invention, the locking mechanism includes a locking insert, and the unlocking mechanism includes an unlocking insert. The locking insert is provided with a push bar and a locking bar. The limiting bar on the unlocking insert is in movable cooperation with the locking bar to restrict the position of the locking insert. The push bar is connected to a push plate, and pushing the locking insert can drive the push plate to move. The locking mechanism is designed to facilitate adjustment and locking of the conduit as needed, and is applicable to conduits of different specifications, with strong versatility.

[0014] In a preferred embodiment of the present invention, the push plate, anti-slip plate, locking mechanism, and unlocking mechanism are provided in two sets on the catheter fixing block, and the two sets are distributed opposite to each other on the catheter fixing block. This arrangement improves the stability of the catheter fixing, and also facilitates the unlocking of the fixed catheter, making it convenient to remove the catheter and use.

[0015] In a preferred embodiment of the present invention, the pressure relief cover is arc-shaped, with one end hinged to the pressure relief cover mounting bracket and the other end movably snapped into the pressure relief cover mounting bracket. This design facilitates the fixing of the pressure relief cover, prevents accidental opening, and ensures stability during use.

[0016] In a preferred embodiment of the present invention, the pressure relief cover is made of transparent PP plastic. This design facilitates observation of the internal conduit through the pressure relief cover and makes it convenient to use.

[0017] In a preferred embodiment of the present invention, a pressure-reducing layer is provided at the connection between the fixed film and the pressure relief cover mounting bracket. The pressure-reducing layer reduces the pressure exerted on the patient's skin by the pressure relief cover mounting bracket and the pressure relief cover. This design can effectively prevent pressure sores from forming on the skin.

[0018] The advantages of this utility model compared with the prior art are:

[0019] The technical solution of this utility model uses a fixing film to fix the entire device at the point of contact between the catheter and the patient, which is convenient to fix and has low cost. The anti-pressure cover set on the fixing film supports the catheter and prevents the catheter from being compressed and affecting the use effect. The adjustable catheter fixing device fixes the catheter connected to the patient and prevents the patient from pulling out the catheter unplanned. The adjustable locking mechanism in the catheter fixing device fixes catheters of different specifications, which is convenient to use and has strong versatility. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the anti-pressure cover of this utility model after it has been unfolded.

[0022] Figure 3 A three-dimensional schematic diagram of the anti-pressure cover mounting bracket;

[0023] Figure 4 This is a partial sectional view of the present invention;

[0024] Figure 5 A three-dimensional schematic diagram of the catheter fixation device;

[0025] Figure 6 This is a partial sectional view of the catheter fixation device;

[0026] Figure 7 Exploded view of the catheter fixation device;

[0027] Explanation of reference numerals in the attached drawings: 1-Fixing film, 11-Functional hole, 2-Pressure relief layer, 3-Pressure relief cover, 31-Pressure relief cover handle, 32-Locking block, 4-Pressure relief cover mounting bracket, 41-Fixing inner ring, 42-Fixing outer ring, 43-Connecting base plate, 44-Limiting groove, 5-Conduit fixing device, 51-Conduit fixing block, 52-Conduit placement groove, 53-Unlocking hole, 54-Push plate, 55-Anti-slip plate, 56-First tension spring mounting hole, 57-Second tension spring mounting hole, 58-Locking hole, 59-Push plate groove, 6-Locking mechanism, 61-Locking insert, 62-Push bar, 63-Locking bar, 64-Limiting block, 7-Unlocking mechanism, 71-Unlocking insert, 72-Limiting bar, 73-First tension spring, 74-Second tension spring. Detailed Implementation

[0028] The following will refer to the appendix in the embodiments of this utility model. Figure 1-7 The technical solutions in the embodiments of this utility model will be described in detail below. Example

[0029] like Figure 1 As shown, a catheter anti-pressure protection device includes a fixing film 1, a pressure-reducing layer 2, an anti-pressure cover 3, an anti-pressure cover mounting bracket 4, a catheter fixing device 5, and a catheter 8.

[0030] The fixation film 1 is applied to the patient's body. The pressure relief cap 3 is set on the pressure relief cap mounting bracket 4 and can be lifted along the connection. The pressure relief cap mounting bracket 4 is set on the fixation film 1, and a pressure relief layer 2 is set in the middle of the two to reduce pressure. The catheter fixation device 5 is set at one end of the pressure relief cap mounting bracket 4. The catheter 8 can pass through the catheter fixation device 5 and be inserted under the pressure relief cap 3. The catheter fixation device 5 can controllably adjust the tightness of the fixation of the catheter 8.

[0031] The main function of the fixation film 1 is to serve as a medium for connecting the whole device with the patient. The fixation film 1 can be applied to the patient's skin.

[0032] The function of the pressure relief layer 2 is to relieve pressure on the pressure relief cover 3 and the pressure relief cover mounting bracket 4, so as to prevent pressure sores from forming on the patient's skin.

[0033] The anti-pressure cover 3 serves a supporting function, preventing the bedding or the patient from compressing the catheter themselves.

[0034] The function of the catheter fixing device 5 is to fix the catheter, and the tightness of the catheter fixing device 5 is adjustable. This design makes the device suitable for fixing catheters of different specifications, and it has strong versatility.

[0035] like Figure 1 and 2As shown, the fixing film 1 is a film with a rectangular cross-section. In this embodiment, an existing anti-allergy film is preferably used. In order to facilitate the connection between the catheter 8 and the patient, a rectangular through hole is opened on the surface of the fixing film 1. This hole is named functional hole 11. The catheter 8 can pass through this functional hole to connect with the patient.

[0036] The pressure relief layer 2 is a rectangular pad made of high-density sponge that meets medical standards. The pressure relief layer 2 is a rectangular ring and is distributed along the outline of the functional hole 11. The pressure relief layer 2 and the fixing film 1 are fixedly connected by adhesive.

[0037] like Figure 2 , 3 As shown in Figure 4, the anti-pressure cover mounting bracket 4 is a rectangular plastic ring made of PP plastic. The anti-pressure cover mounting bracket 4 includes a fixed inner ring 41, a fixed outer ring 42, and a connecting base plate 43.

[0038] The inner ring 41 is a plastic ring with a rectangular cross-section, and the inner dimensions of the inner ring 41 are the same as the dimensions of the functional hole 11.

[0039] The outer ring 42 is a plastic ring with a U-shaped cross-section. The outer ring 42 completely covers the outer side of the inner ring 41, with a certain gap between them.

[0040] To facilitate the connection between the inner ring 41 and the outer ring 42, a connecting base plate 43 is fixed on the bottom surface of the inner ring 41 and the outer ring 42, and the inner ring 41 and the outer ring 42 are fixedly connected by the connecting base plate 43.

[0041] To facilitate the connection of the pressure relief cover 3, a plastic connecting piece is fixed on the side of the fixed outer ring 42 away from the opening end. The plastic connecting piece is hinged to the pressure relief cover 3, and the pressure relief cover 3 can rotate along the hinge to open the pressure relief cover 3.

[0042] To facilitate the fixing of the pressure relief cover 3, two rectangular grooves are recessed on the outer side of the inner ring 41 on the side away from the opening end of the outer ring 42, perpendicular to the outer side. These grooves are named limiting grooves 44. The locking block 35 on the pressure relief cover 3 can cooperate with the limiting grooves 44 to fix it, thereby realizing the opening and closing control of the pressure relief cover 3.

[0043] like Figure 2 , 3 As shown in Figures 4 and 5, the pressure-resistant cover 3 is a semi-circular plastic cover made of transparent PP plastic.

[0044] One end of the anti-pressure cover 3 is hinged to the fixed outer ring 42. On the inner side of the end face of the other end, there are two locking blocks 35 with triangular cross-sections protruding perpendicularly to the surface. The anti-pressure cover 3 can cooperate with the limiting groove 44 through the locking blocks 35, and thus be fixed on the anti-pressure cover mounting bracket 4.

[0045] To facilitate the release of the locking block 35 from the limiting groove 44, an arc-shaped handle protrudes perpendicularly outward from the end face of the locking block 35 on the anti-pressure cover 3. This handle is named the anti-pressure cover handle 32. Pulling the anti-pressure cover handle 32 can release the locking block 35 from the limiting groove 44, thereby opening the anti-pressure cover 3.

[0046] like Figure 1 , 4 As shown in Figures 5 and 6, the catheter fixing device 5 includes a catheter fixing block 51, a locking mechanism 6, and an unlocking mechanism 7. The catheter fixing block 51 is integrally fixed on the outer fixing ring 42, at the end away from the anti-pressure cover 3. The locking mechanism 6 and the unlocking mechanism 7 are respectively set on the catheter fixing block 51, and the two cooperate with each other.

[0047] The conduit fixing block 51 is a rectangular plastic block supported by PP plastic. On the upper surface of the conduit fixing block 51, there is a rectangular groove in the middle perpendicular to the conduit fixing block 51. This groove is named the conduit placement groove 52. The conduit 8 can be placed in this conduit placement groove 52.

[0048] To facilitate adjustment of the tightness of the conduit fixing, two rectangular holes are made perpendicular to the end face of the conduit fixing block 51, which are called push plate grooves 59. The two push plate grooves 59 are distributed opposite to the conduit placement groove 52 and are connected to the conduit placement groove 52. A push plate 54 with a rectangular cross-section is inserted in the push plate groove 59. The push plate 54 can move left and right in the push plate groove 59 under the action of the locking mechanism 6 to adjust the distance between it and the conduit placement groove 52.

[0049] To improve the stability of the locking mechanism 6 in fixing the conduit 8 and prevent the conduit 8 from sliding after fixing, an anti-slip plate 55 is fixed to the push plate 54 with glue. The anti-slip plate 55 is fixed to the side of the push plate 54 near the conduit placement groove 52. The anti-slip plate 55 is made of rubber and is in direct contact with the conduit 8. The anti-slip plate 55 can improve the stability of fixing the conduit 8.

[0050] To facilitate the installation of the locking mechanism 6, five rectangular holes are made perpendicular to the sides of the two opposing sides of the conduit fixing block 51 and spaced at intervals. These holes are named locking holes 58, and the locking mechanism 6 is inserted into the locking holes 58.

[0051] To facilitate the installation of the unlocking mechanism 7, two rectangular through holes are provided on the upper surface of the guide tube fixing block 51. These through holes are named unlocking holes 53. The unlocking holes 53 correspond to two of the locking holes 58, and the unlocking mechanism 7 can be inserted into the unlocking holes 52.

[0052] Definition: In the embodiment, the surface that is in direct contact with the patient is the lower surface, and the direction from the surface in contact with the patient to the outside is the upper surface.

[0053] like Figure 5 , 6 As shown in Figure 7, the locking mechanism 6 includes a locking insert 61, which is made of PP plastic. One side of the locking insert 61 is a rectangular pressing end, and the other side has five spaced plastic strips. Two of the two ends and one in the middle are named push strips 62, and the other two are named locking strips 63. Both push strips 62 and locking strips 63 are inserted into the locking hole 58.

[0054] The main function of push bar 62 is to connect with push plate 54 and push push plate 54 to move. Regarding the connection between push bar 62 and push plate 54, there is a countersunk hole on the surface of push plate 54, and push plate 54 and push bar 62 are connected together by screws.

[0055] The function of the locking bar 63 is to cooperate with the unlocking mechanism 7 to fix the position of the locking insert 61. Multiple limiting blocks 64 with triangular cross sections are fixed on the surface of the locking bar 63 perpendicular to the locking bar 63. The multiple limiting blocks 64 are distributed at intervals on the locking bar 63.

[0056] The unlocking mechanism 7 includes an unlocking insert 71, which is made of PP plastic. The upper end of the unlocking insert 71 is a rectangular pull tab, and the lower end is fixed with two spaced plastic strips, which are named limiting strips 72. The limiting strips 72 are inserted into the unlocking hole 53. The end of the limiting strip 72 has a triangular cross-section and can cooperate with the limiting block 64 to fix the position of the locking insert 61 and limit the direction in which the locking insert 61 is pulled outward.

[0057] To facilitate the unlocking mechanism 7's unlocking of the locking mechanism 6, three circular blind holes are provided perpendicularly to the inner side of the guide tube placement groove 52. These holes are named the first tension spring mounting holes 56. A first tension spring 73 is installed in the first tension spring mounting holes 56. One end of the first tension spring 73 is fixedly connected to the bottom surface of the mounting hole, and the other end is fixedly connected to the push plate 54. When the push bar 62 pushes the push plate 54 closer to the guide tube 8, the first tension spring 73 is stretched by force. On the upper surface of the guide tube fixing block 51, there are two holes perpendicular to the surface recessed between the two unlocking holes 53. A circular blind hole is designated as the second tension spring mounting hole 57. A second tension spring 74 is fixed inside the second tension spring mounting hole 57. One end of the second tension spring 74 is fixedly connected to the bottom surface of the mounting hole, and the other end is connected to the unlocking insert 71. The second tension spring 74 is always in a stretched state. Pulling the unlocking insert 71 upwards can release the engagement between the limiting strip 72 and the locking strip 63. At this time, the locking insert 61 is reset under the action of the first tension spring 73, which in turn drives the push plate 54 to move, thereby releasing the fixation of the conduit 8 and facilitating the removal of the conduit 8. This makes it convenient to use.

[0058] To improve the stability of fixing the catheter 8 and facilitate the unlocking and removal of the fixed catheter, two sets of push plate 54, anti-slip plate 55, locking mechanism 6 and unlocking mechanism 7 are provided on the catheter fixing block 51, and the two sets are distributed opposite to each other on the catheter fixing block 51.

[0059] The usage process of this embodiment is as follows: First, apply the fixing film 1 to the patient's body, then open the anti-pressure cover 3, connect the catheter 8 to the patient, place the catheter 8 into the catheter placement slot 52, press the locking insert 61 until the anti-slip plate 55 is tightly attached to the catheter 8, thus completing the fixing of the catheter 8, and then close the anti-pressure cover 3; when it is necessary to remove the catheter 8, pull the unlocking insert 71 upward to release the restriction of the anti-slip plate 55 on the catheter 8, then open the anti-pressure cover 3 and take out the catheter.

[0060] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model.

Claims

1. A catheter pressure protection device, characterized in that: The device includes a fixing film (1), a pressure relief cap (3), and a catheter fixing device (5). The fixing film (1) is attached to the patient, near the connection point between the catheter (8) and the patient. The pressure relief cap (3), which is used to prevent the catheter from being compressed, is mounted on the fixing film (1) via a pressure relief cap mounting bracket (4). The pressure relief cap (3) can be opened and closed controllably relative to the pressure relief cap mounting bracket (4). The catheter fixing device (5) is located at one end of the pressure relief cap mounting bracket (4). The catheter (8) passes through the pressure relief cap (3) and contacts the patient via the catheter fixing device (5). The tightness of the catheter (8) fixing device (5) can be adjusted controllably.

2. The catheter pressure protection device according to claim 1, characterized in that: The catheter fixing device (5) includes a catheter fixing block (51), a locking mechanism (6) and an unlocking mechanism (7). The catheter (8) is placed in the catheter placement slot (52) in the catheter fixing block (51). The locking mechanism (6) is connected to the catheter fixing block (51). The locking mechanism (6) can controllably fix the catheter (8) in the catheter placement slot (52). The unlocking mechanism (7) is connected to the catheter fixing block (51). The unlocking mechanism (7) can controllably release the fixing of the catheter (8) by the unlocking mechanism (7).

3. The catheter pressure protection device according to claim 2, characterized in that: The conduit fixing block (51) includes a push plate (54), an anti-slip plate (55) and a push plate groove (59). The push plate (54) is connected to the anti-slip plate (55), and the push plate groove (59) is connected to the conduit placement groove (52) for placing the conduit (8). The push plate (54) is placed in the push plate groove (59) and connected to the locking mechanism (6). The spacing between the push plate (54) and the conduit (8) in the conduit placement groove (52) can be controlled and adjusted by the locking mechanism (6).

4. The catheter pressure protection device according to claim 2, characterized in that: The locking mechanism (6) includes a locking insert (61), and the unlocking mechanism (7) includes an unlocking insert (71). The locking insert (61) is provided with a push bar (62) and a locking bar (63). The limiting bar (72) on the unlocking insert (71) is in movable cooperation with the locking bar (63) to restrict the position of the locking insert (61). The push bar (62) is connected to the push plate (54), and pushing the locking insert (61) can drive the push plate (54) to move.

5. The catheter anti-pressure protection device according to claim 2, characterized in that: The push plate (54), anti-slip plate (55), locking mechanism (6) and unlocking mechanism (7) are provided in two sets on the conduit fixing block (51), and the two sets are distributed opposite to each other on the conduit fixing block (51).

6. The catheter anti-pressure protection device according to claim 1, characterized in that: The pressure relief cover (3) is arc-shaped. One end of the pressure relief cover (3) is hinged to the pressure relief cover mounting bracket (4), and the other end is movably snapped into the pressure relief cover mounting bracket (4).

7. The catheter pressure protection device according to claim 1, characterized in that: The pressure relief cover (3) is made of transparent PP plastic.

8. The catheter pressure protection device according to claim 1, characterized in that: A pressure-reducing layer (2) is provided at the connection between the fixed film (1) and the pressure-reducing cover mounting bracket (4). The pressure-reducing layer (2) reduces the pressure on the patient's skin by the pressure-reducing cover mounting bracket (4) and the pressure-reducing cover (3).

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