In-vivo and in-vitro combined catheter fixing device for preventing unplanned extubation

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to an in-vivo and in-vitro combined type catheter fixing device for preventing non-planned extubation, which comprises a base, a lower arc-shaped ring fixedly connected with the middle of the base, a convex block fixedly connected with the top of the lower arc-shaped ring, and two mirror-symmetrical metal hooks fixedly connected with the end part of the lower fixing ring. Through mutual cooperation of the base, the cover plate, the metal hook, the upper arc-shaped ring, the lower arc-shaped ring and other structures, the catheter can be effectively fixed in place, the situation that the catheter is disengaged from a puncture part due to accidental traction or general position motion of a patient is avoided, in addition, the soft cushion arranged on the bottom plane of the base can be attached to the skin of the patient, and the puncture effect is good. The rubber pad at the end part of the base is in contact with the edge of the puncture part, so that the compression of the base on the puncture part is avoided, the comfort of a patient during use is favorably improved, and the wearing compliance of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an in vivo and in vitro combined catheter fixation device for preventing unplanned extubation. Background Technology

[0002] In clinical nursing, long-term indwelling catheters are widely used in various medical procedures such as intravenous infusion, drug therapy, nutritional support, and hemodialysis. Catheters are not only fundamental to the survival and treatment of critically ill patients, but also a vital lifeline for patients with chronic diseases during long-term treatment, effectively ensuring the continuity and effectiveness of treatment. However, long-term catheter placement also carries a high risk—unplanned extubation. Unplanned extubation refers to a common and serious clinical problem where the catheter dislodges from the insertion site due to the patient or other factors without medical instructions or intervention from healthcare professionals. Patients may experience pain and a foreign body sensation at the catheter insertion site. Patients who are sedated, under anesthesia, confused, or asleep may unconsciously try to pull out the catheter, or the catheter may dislodge from the puncture site during daily activities such as movement, accidental pulling, or improper manipulation. Unplanned extubation can lead to trauma, infection, and bleeding at the catheter insertion site. Some deeply inserted catheters, such as PICC catheters, may break off the portion inside the body during unplanned extubation. The remaining catheter needs to be surgically removed, causing pain to the patient, increasing treatment costs, and even causing the broken catheter to become lodged in the blood vessel, posing a life-threatening risk.

[0003] Currently, while there are many types of catheter fixation devices on the market, including fixation straps, adhesive fixation devices, medical-grade tape, tubing clamps, and bandages, these traditional fixation devices have some significant drawbacks. Firstly, the fixation effect is unstable. The fixation effect of external fixation devices is often affected by factors such as patient activity, changes in body position, and device aging. Especially when patients are very active or wear the device for extended periods, the fixation device may loosen or fail, leading to catheter displacement or dislodgement. Many fixation devices do not adequately consider the patient's range of motion and positional changes, making them prone to failure due to unconscious movements, thus causing catheter displacement or dislodgement. Secondly, long-term use of adhesive tape or fixation straps may cause friction, pressure, or allergic reactions to the skin, leading to skin damage, especially in hot and humid environments, resulting in poor patient comfort. Furthermore, some catheter fixation devices may make the care and cleaning around the catheter more difficult, affecting wound healing and increasing the burden of care. Additionally, many fixation devices are not ergonomically designed; prolonged use can easily cause pressure, friction, or trauma to the skin, increasing patient discomfort and the risk of skin damage. Traditional fixation methods often fail to effectively reduce the contact pressure between the catheter and the skin or puncture site, resulting in insufficient assurance of patient comfort and safety during treatment. Therefore, this invention provides an in vitro-in vivo combined catheter fixation device to prevent unplanned extubation. Utility Model Content

[0004] This invention aims to provide an in vitro-in vivo combined catheter fixation device to prevent unplanned extubation. It can not only maintain the catheter in a stable and continuous manner in different patient positions and activity states, but also take into account patient comfort, reduce pressure on the skin and puncture site, reduce replacement frequency, and reduce adhesive contamination, thereby improving patient compliance and comfort while carrying the catheter and reducing the risk of unplanned extubation.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] An in vivo and in vitro combined catheter fixation device for preventing unplanned extubation includes a base, a lower arc-shaped ring fixedly connected to the middle of the base, a protrusion fixedly connected to the top of the lower arc-shaped ring, and two mirror-symmetrical metal hooks fixedly connected to the end of the lower fixing ring.

[0007] The top of the base is fixedly connected to both sides of the lower arc ring with limit strips. The two ends of the limit strips are rounded. A soft pad is fixedly connected to the bottom of the base. A rubber pad is fixedly connected to the end of the base near the metal hook. The rubber pad is located below the metal hook.

[0008] A cover plate is detachably installed on the top of the base. An upper arc ring is fixedly connected to the inner wall of the cover plate. The upper arc ring and the lower arc ring correspond to each other, and a groove adapted to the protrusion is opened on the inner wall of the upper arc ring.

[0009] A limiting groove is provided on the inner wall of the cover plate, and the limiting groove passes through the upper arc-shaped ring and is adapted to the limiting strip;

[0010] Both sides of the cover plate are fixedly connected with hooks, which are snapped onto the sides of the base to achieve detachable installation.

[0011] Based on the above technical solution, its operating principle and the resulting technical effects are as follows:

[0012] In actual use, the catheter to be inserted into the body is first sent into the patient's body through the puncture site. Then, the bent part of the metal hook is inserted into the puncture site. At this time, the base is laid along the length of the catheter. The catheter is then secured in the lower arc ring. The cover plate is then placed on the base, so that the limiting strip is engaged in the limiting groove and the protrusion is engaged in the recess. At the same time, the hooks on both sides of the cover plate are engaged on both sides of the base, thus achieving mutual fixation between the two and clamping and fixing the catheter to prevent the catheter from being pulled out of the puncture site due to accidental operation. When the catheter needs to be removed as planned, first pull the hooks on both sides of the cover plate to remove the cover plate from the base, and then the catheter can be pulled out. Finally, the entire operation is completed by removing the metal hook from the puncture site.

[0013] In a preferred embodiment, the present invention can be further configured such that the base and the cover plate are mutually adapted, and both the base and the cover plate are made of plastic material.

[0014] In a preferred embodiment, the present invention can be further configured such that the number of protrusions is four, and the top of the protrusions is set to be arc-shaped.

[0015] In a preferred embodiment, the present invention can be further configured such that the metal hook includes a straight rod portion and a bent portion, the bent portion being arc-shaped, and the straight rod portion and the bent portion being perpendicular to each other.

[0016] In a preferred embodiment, the present invention can be further configured such that there are two limiting strips, with the two limiting strips located on both sides of the lower arc-shaped ring.

[0017] In a preferred embodiment, the present invention can be further configured such that the rubber pad is arc-shaped.

[0018] In a preferred embodiment, the present invention can be further configured such that the width of the base and cover plate at the end near the metal hook is smaller than that at the other end.

[0019] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0020] A fixed connection refers to a connection in which parts or components are fixed in place, with no relative movement between them. These connections are divided into two types: detachable and non-detachable.

[0021] (1) Detachable connections use screws, splines, wedges, etc. to fix parts together. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of bolts, keys, wedges) and properly tightened.

[0022] (2) Non-removable connections mainly refer to welding, riveting, and tenon joints. Since disassembly requires forging, sawing, or oxy-acetylene cutting for repair or replacement, these parts generally cannot be reused. Furthermore, attention should be paid to process quality, technical inspection, and remedial measures (such as correction and polishing) during connection.

[0023] A movable connection refers to a connection in which parts or components are fixed but have relative motion.

[0024] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0025] 1. In this utility model, the combination of the base, cover plate, metal hook, upper arc ring, lower arc ring and other structures can effectively fix the catheter to the patient's skin, effectively preventing the catheter from falling out of the puncture site due to accidental pulling or large body movements by the patient, and the metal hook will not cause additional wounds when it is inserted from the puncture site.

[0026] 2. In this utility model, the soft pad set on the bottom plane of the base fits against the patient's skin, which helps to prevent the base from directly pressing on the skin and causing skin damage during fixation. In addition, the rubber pad at the end of the base contacts the edge of the puncture site, which also prevents the base from pressing on the puncture site, thus improving the patient's comfort during use. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is an exploded view of the overall structure of this utility model from a first-person perspective;

[0029] Figure 3 This is an exploded view of the overall structure of this utility model from a second perspective.

[0030] Figure label:

[0031] 1. Base; 2. Lower arc ring; 3. Protrusion; 4. Metal hook; 5. Limiting strip; 6. Rubber pad; 7. Cover plate; 8. Upper arc ring; 9. Groove; 10. Limiting groove; 11. Hook; 12. Soft pad; 13. Guide tube. Detailed Implementation

[0032] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features in the embodiments can be combined with each other.

[0033] Based on the concept of this application, combined with Figures 1 to 3 This document describes an embodiment of an internal and external combined catheter fixation device for preventing unplanned extubation of internal catheters. Specifically, this internal and external combined catheter fixation device is constructed as a split structure, comprising three components: a cover plate 7, a base 1, and a metal hook 4. Through the cooperation of the base 1, cover plate 7, metal hook 4, upper arc-shaped ring 8, and lower arc-shaped ring 2, the catheter 13 can be effectively fixed to the patient's skin, effectively preventing the catheter 13 from dislodging from the puncture site due to accidental pulling or large body movements. Furthermore, the metal hook 4 is secured to the puncture site without causing additional wounds. The soft pad 12 on the bottom plane of the base 1 conforms to the patient's skin, preventing direct pressure on the skin during fixation and thus avoiding skin damage. Additionally, the rubber pad 6 at the end of the base 1 contacts the edge of the puncture site, preventing pressure on the puncture site and improving patient comfort.

[0034] Combination Figures 1-3 As shown, the present invention provides an in vitro and in vivo combined catheter fixation device for preventing unplanned extubation, including a base 1, a lower arc-shaped ring 2 fixedly connected to the middle of the base 1, a protrusion 3 fixedly connected to the top of the lower arc-shaped ring 2, and two metal hooks 4 fixedly connected to the end of the lower fixing ring, and the two metal hooks 4 are mirror symmetrical between each other.

[0035] The top of the base 1 is fixedly connected to both sides of the lower arc ring 2 with limit strips 5. The two ends of the limit strips 5 are rounded. The bottom of the base 1 is fixedly connected with 12 layers of soft pads. The end of the base 1 near the metal hook 4 is fixedly connected with a rubber pad 6. The rubber pad 6 is located below the metal hook 4.

[0036] A cover plate 7 is detachably installed on the top of the base 1. An upper arc ring 8 is fixedly connected to the inner wall of the cover plate 7. The upper arc ring 8 and the lower arc ring 2 correspond to each other, and a groove 9 that matches the protrusion 3 is opened on the inner wall of the upper arc ring 8.

[0037] A limiting groove 10 is provided on the inner wall of the cover plate 7. The limiting groove 10 passes through the upper arc ring 8 and is adapted to the limiting strip 5.

[0038] Both sides of the cover plate 7 are fixedly connected with hooks 11, which are snapped into the sides of the base 1 to achieve detachable installation.

[0039] Regarding the technical solution of this embodiment, the base 1 and the cover plate 7 are mutually compatible, and both the base 1 and the cover plate 7 are made of plastic material. Therefore, both the base 1 and the cover plate 7 have a certain degree of elasticity, which facilitates the locking or disassembly of the two. In actual use, the catheter 13 will first be punctured into the patient's skin. At this time, the metal hook 4 is first inserted into the patient's puncture part, and then the catheter 13 is placed between the base 1 and the cover plate 7 and locked in place to fix the catheter 13.

[0040] In this embodiment, there are four protrusions 3. The top of the protrusion 3 is set to be arc-shaped. When the cover plate 7 and the base 1 are engaged, the protrusion 3 will be embedded in the groove 9 opened in the upper arc ring 8, thereby further realizing the precise positioning and connection stability between the base 1 and the cover plate 7.

[0041] Regarding the technical solution of this embodiment, the metal hook 4 includes a straight rod portion and a bent portion. The bent portion is arc-shaped, and the straight rod portion and the bent portion are perpendicular to each other. The metal hook 4 can be made of stainless steel or titanium alloy. This embodiment does not make a specific limitation and can choose according to the actual situation. In actual use, the bent portions of the two metal hooks 4 are inserted into the skin puncture site to limit and fix the base 1. It should be noted that the base 1 can be cut into two halves by scissors, so that the two metal hooks 4 can be separated, thereby making it convenient to remove the metal hooks 4 from the puncture site one by one. This embodiment does not make a limitation on whether the base 1 is used as a whole or cut during the disassembly process and can choose according to the actual situation.

[0042] Regarding the technical solution of this embodiment, there are two limiting strips 5, which are located on both sides of the lower arc ring 2. The two ends of the limiting strips 5 are rounded to facilitate their insertion into the limiting groove 10. When the cover plate 7 is secured to both sides of the base 1 by the hook 11, the limiting groove 10 on the cover plate 7 can be precisely positioned by being engaged in the limiting strip 5, thereby enhancing the connection strength and preventing the cover plate 7 from shifting away from the base 1.

[0043] Regarding the technical solution of this embodiment, the rubber pad 6 is arc-shaped. After the base 1 is fixed to the patient's puncture site to fix the catheter 13, medical tape is generally used to fix the catheter 13 and the base 1. At this time, the soft pad 12 set on the bottom plane of the base 1 will fit against the patient's skin, which helps to prevent the base 1 from directly pressing on the skin and causing skin damage. In addition, by using the rubber pad 6 at the end of the base 1 to contact the edge of the puncture site, it is also possible to avoid the base 1 pressing on the puncture site, which helps to improve the comfort of the patient during use. It should be noted that the soft pad 12 can be made of silicone or rubber, or other soft and non-polluting medical materials. This embodiment does not limit it here, and it can be selected according to the actual situation.

[0044] In the technical solution of this embodiment, the width of the base 1 and the cover plate 7 near the metal hook 4 is smaller than that of the other end.

[0045] Specifically, in actual use, the catheter 13 to be inserted into the body is first inserted into the patient's body through the puncture site. Then, the bent part of the metal hook 4 is inserted into the puncture site, and the base 1 is fixed to the patient's skin. At this time, the base 1 is arranged along the length of the catheter 13. Then, the catheter 13 is clamped in the lower arc ring 2. Then, the cover plate 7 is placed on the base 1, and the limiting strip 5 is inserted into the limiting groove 10, and the protrusion 3 is inserted into the groove 9. At the same time, the hooks 11 on both sides of the cover plate 7 are clamped on both sides of the base 1, so that the two are mutually fixed, thereby clamping and fixing the catheter 13 and preventing the catheter 13 from being pulled out of the puncture site due to accidental operation. When the catheter 13 needs to be pulled out as planned, first, the hooks 11 on both sides of the cover plate 7 are pulled to remove the cover plate 7 from the base 1, and then the catheter 13 can be pulled out. Then, the entire operation is completed by removing the metal hook 4 from the puncture site.

[0046] The following description, in conjunction with the accompanying drawings and embodiments, provides a further explanation of the in-body and out-of-body combined catheter fixation device for preventing unplanned extubation provided by this utility model.

[0047] An in vivo and in vitro combined catheter fixation device for preventing unplanned extubation includes a base 1, a lower arc-shaped ring 2 fixedly connected to the middle of the base 1, a protrusion 3 fixedly connected to the top of the lower arc-shaped ring 2, and two metal hooks 4 fixedly connected to the end of the lower fixing ring, with the two metal hooks 4 being mirror-symmetrical.

[0048] The top of the base 1 is fixedly connected to both sides of the lower arc ring 2 with limit strips 5. The two ends of the limit strips 5 are rounded. The bottom of the base 1 is fixedly connected with 12 layers of soft pads. The end of the base 1 near the metal hook 4 is fixedly connected with a rubber pad 6. The rubber pad 6 is located below the metal hook 4.

[0049] A cover plate 7 is detachably installed on the top of the base 1. An upper arc ring 8 is fixedly connected to the inner wall of the cover plate 7. The upper arc ring 8 and the lower arc ring 2 correspond to each other, and a groove 9 that matches the protrusion 3 is opened on the inner wall of the upper arc ring 8.

[0050] A limiting groove 10 is provided on the inner wall of the cover plate 7. The limiting groove 10 passes through the upper arc ring 8 and is adapted to the limiting strip 5.

[0051] Both sides of the cover plate 7 are fixedly connected with hooks 11, which are snapped into the sides of the base 1 to achieve detachable installation.

[0052] The working principle and usage process of this utility model are as follows: In actual use, the catheter 13 to be inserted is first inserted into the patient's body through the puncture site. Then, the bent part of the metal hook 4 is used to lock into the puncture site, and the base 1 is fixed to the patient's skin. At this time, the base 1 is arranged along the length of the catheter 13. Then, the catheter 13 is locked in the lower arc ring 2. Then, the cover plate 7 is closed on the base 1, and the limiting strip 5 is locked into the limiting groove 10, and the protrusion 3 is locked into the groove 9. At the same time, the hooks 11 on both sides of the cover plate 7 are locked into the two sides of the base 1, so that the two can be fixed to each other, thereby clamping and fixing the catheter 13 and preventing the catheter 13 from being pulled out of the puncture site due to accidental operation. When the catheter 13 needs to be pulled out as planned, first, the hooks 11 on both sides of the cover plate 7 are moved to remove the cover plate 7 from the base 1, and then the catheter 13 can be pulled out. Then, the entire operation is completed by removing the metal hook 4 from the puncture site.

[0053] In this invention, the term "plural" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0055] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An in-vivo and in-vitro combined catheter securement device for preventing unintended extubation, comprising a base (1), characterized in that, The middle part of the base (1) is fixedly connected with a lower arc-shaped ring (2), the top of the lower arc-shaped ring (2) is fixedly connected with a protruding block (3), and the ends of the lower fixed ring are fixedly connected with two mirror-symmetrical metal hooks (4); The top of the base (1) is fixedly connected with a limiting strip (5) on both sides of the lower arc-shaped ring (2), the both ends of the limiting strip (5) are provided with rounded corners, the bottom of the base (1) is fixedly connected with a soft pad (12) layer, one end of the base (1) close to the metal hook (4) is fixedly connected with a rubber pad (6), and the rubber pad (6) is located below the metal hook (4); The upper part of the base (1) is detachably provided with a cover plate (7), the inner wall of the cover plate (7) is fixedly connected with an upper arc-shaped ring (8), the upper arc-shaped ring (8) corresponds to the lower arc-shaped ring (2), and the inner wall of the upper arc-shaped ring (8) is provided with a groove (9) matched with the protruding block (3); The inner wall of the cover plate (7) is provided with a limiting groove (10), the limiting groove (10) penetrates through the upper arc-shaped ring (8) and is matched with the limiting strip (5); The both sides of the cover plate (7) are fixedly connected with a clamping hook (11), and the clamping hook (11) is clamped on the both sides of the base (1) to realize detachable installation.

2. The combination in-vivo and ex-vivo catheter securement device of claim 1, wherein, The base (1) and the cover plate (7) are matched with each other, and the base (1) and the cover plate (7) are both made of plastic material.

3. The combination in-vivo and ex-vivo catheter securement device of claim 2, wherein, The number of the protruding block (3) is four, and the top of the protruding block (3) is provided in a circular arc shape.

4. The combination in-vivo and ex-vivo catheter securement device of claim 2, wherein, The metal hook (4) comprises a straight rod part and a bent part, the bent part is provided in an arc shape, and the straight rod part and the bent part are perpendicular to each other.

5. The combination in-vivo and ex-vivo catheter securement device of claim 4, wherein, The number of the limiting strip (5) is two, and the two limiting strips (5) are located on the both sides of the lower arc-shaped ring (2).

6. The combination in-vivo and ex-vivo catheter securement device of claim 5, wherein, The rubber pad (6) is in a circular arc shape.

7. The combination in-vivo and ex-vivo catheter securement device of claim 5, wherein, The width of the base (1) and the cover plate (7) close to the metal hook (4) at one end is smaller than that at the other end.

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