A drag-resistant drainage tube securement device

Abstract

The utility model discloses a kind of anti-pulling drainage tube fixing devices, belong to medical instrument technical field, to solve the existing drainage tube fixing mode due to lack of mechanical locking and stress blocking mechanism, leading to pipeline easy axial slip, pulling force direct conduction to the problem of wound. The device includes wound protection component, drainage pipeline component and locking assembly;Drainage pipeline component passes through wound protection component, locking assembly is sleeved on pipeline and is fixed in distal end skin, and relaxation buffer tube section is formed between the two;Locking assembly contains shell, pressing cap and elastic piece, there is bearing groove in shell, and elastic piece pushes pressing cap and forms mechanical clamping force by compressing pipeline, limit pipeline axial displacement. The device is cooperated by distal end mechanical locking and intermediate buffer, and pulling force is transferred to distal end skin, cutting off force to the conduction of wound, avoid wound pain, tear, locking stable and convenient for observing wound, applicable to postoperative and intensive care drainage tube fixing.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a drainage tube fixing device that prevents pulling. Background Technology

[0002] In postoperative drainage or intensive care, establishing an effective external drainage channel is crucial for draining internal exudate and preventing infection. To prevent drainage tube slippage, medical tape, sutures, or transparent dressings are commonly used to secure the drainage tube to the skin around the wound. This method of fixation essentially relies on the friction between the adhesive material and the tube wall to limit tube displacement.

[0003] However, existing fixation techniques have significant shortcomings in terms of mechanical transmission control. First, the surface of drainage tubes is usually quite smooth, and the frictional resistance and adhesive force provided by medical tape are limited. When the patient turns over, moves, or the drainage bag is pulled by gravity, the drainage tube easily overcomes the friction of the tape, resulting in slight axial creep or slippage. This imperceptible cumulative slippage gradually depletes the slack left by medical staff, causing external tension to ultimately act directly on the wound suture site, causing severe pain for the patient and even tearing the sutures. Second, existing fixation points are usually close to the wound and lack a force grading mechanism. Once the tube is stretched, the traction force will cause skin deformation at the fixation point, and this deformation will directly affect the wound area. It is evident that existing fixation devices fail to effectively block the "force point" from the "protection point" in physical space, and also cannot provide sufficient axial mechanical locking to resist strong traction forces. Therefore, it is urgent to improve the existing technology to solve the problems caused by the lack of mechanical locking and stress blocking mechanisms in the current drainage tube fixation method, which makes the tube prone to axial slippage and external traction force directly transmitted to the wound. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a drainage tube fixing device that prevents pulling. It aims to solve the problems of axial creep and slippage of the tube caused by the lack of mechanical locking in the existing drainage tube fixing method, and the problem of external pulling force being directly transmitted to the wound and causing pain and tearing due to the lack of stress blocking mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A drainage tube fixation device for preventing traction includes a wound dressing assembly, a drainage tube assembly, and a locking assembly; the drainage tube assembly passes through the wound dressing assembly, and the locking assembly is sleeved on the drainage tube assembly and fixed along the axial direction of the drainage tube assembly at a distal skin position at a predetermined distance from the wound dressing assembly, thereby forming a non-stressed, relaxed buffer tube segment between the wound dressing assembly and the locking assembly;

[0007] The locking assembly includes a housing, a pressing cap movably mounted on the housing, and an elastic element disposed inside the housing. A bearing groove is formed within the housing to accommodate the drainage tube assembly through which it passes. A clamping space is formed between the pressing cap and the bearing groove. The elastic element abuts against the bottom of the bearing groove and between the pressing cap. Under the elastic force of the elastic element, the pressing cap remains in a position that mechanically presses the drainage tube assembly against the housing. The resulting mechanical clamping force resists external pulling forces, limiting the axial displacement of the drainage tube assembly relative to the locking assembly. This ensures that the drainage tube assembly between the wound dressing assembly and the locking assembly maintains the shape of the relaxed buffer section when subjected to distal force, achieving force blocking.

[0008] Furthermore, a lower groove is provided in the middle of the bearing groove, and an upper groove is provided on the inner side of the outer shell that is opposite to the lower groove; the tube body of the drainage pipe assembly is located between the upper groove and the lower groove, and is held and fixed by the upper groove and the lower groove under the action of the elastic member.

[0009] Preferably, the outer peripheral wall of the pressing cap is provided with a flange, and the inner side wall of the outer shell is provided with a groove that matches the flange; when the pressing cap is in the pressed position, the flange is engaged in the groove for position locking; when the pressing cap moves downward against the elastic force of the elastic element, the flange disengages from the groove to release the axial locking of the drainage pipe assembly.

[0010] Furthermore, the wound care component includes a housing and a throttle handle disposed on the housing; the housing has an internal threaded groove, and the drainage tube component is provided with an installation thread corresponding to the position of the housing; the housing is rotated by the throttle handle to lock into the installation thread.

[0011] Preferably, the housing is a cover structure made of transparent material; a first adhesive plate extends from both sides of the bottom of the housing, and a second adhesive plate extends from both sides of the outer shell.

[0012] Furthermore, the drainage tube assembly includes an aspiration tube, a drainage tube, and a negative pressure airbag; one end of the aspiration tube is connected to the drainage tube, and the other end is connected to the negative pressure airbag; the aspiration tube passes through the wound care assembly and the locking assembly in sequence, and the mounting thread is provided on the outer wall of the aspiration tube.

[0013] More specifically, the negative pressure airbag is provided with a waste liquid outlet for discharging waste liquid, and the waste liquid outlet is provided with a sealing cap.

[0014] This utility model discloses an anti-traction drainage tube fixation device, the core of which lies in the stress-blocking structure of "distal mechanical locking + intermediate relaxation buffer" constructed through the interval cooperation of the wound protection component and the locking component. Compared with the prior art, this utility model has significant advantages: the device uses the locking component to strongly mechanically lock the tube at the distal end, forcibly transferring the external traction force to the healthy skin at the distal end; combined with the intermediate reserved relaxation buffer tube section, it cuts off the force transmission path to the wound, completely solving the problem of wound stress and pain. The mechanical clamping force of the upper and lower grooves replaces the friction of traditional adhesive tape, preventing the drainage tube from slipping (creeping) within the fixation point, thus ensuring that the reserved buffer section will not disappear due to long-term use. The end wound protection component adopts a transparent cover design, facilitating observation of the wound condition, and the adhesive plate is separated from the functional components, reducing the risk of skin damage during dressing changes. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a drainage tube fixing device to prevent pulling.

[0016] Figure 2 for Figure 1 Enlarged view of area A in a type of anti-pulling drainage tube fixing device.

[0017] Figure 3 An exploded view of the wound protection component in a drainage tube fixation device designed to prevent traction.

[0018] Figure 4 This is a cross-sectional view of a locking component in a pull-resistant drainage tube fixing device.

[0019] Figure 5 This is an exploded schematic diagram of the locking assembly of a drainage tube fixing device designed to prevent pulling.

[0020] The following are the markings in the attached diagram:

[0021] 1. Wound care assembly; 11. Rotary handle; 12. Housing; 2. Drainage tubing assembly; 21. Suction tube; 22. Mounting thread; 23. Drainage tube; 3. First adhesive plate; 4. Locking assembly; 41. Second adhesive plate; 42. Press cap; 421. Flange; 422. Groove; 43. Housing; 431. Upper groove; 44. Support groove; 441. Lower groove; 45. Elastic element; 5. Negative pressure airbag; 51. Waste liquid outlet. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Existing methods for fixing drainage tubes suffer from insufficient locking force and easy transmission of traction force to the wound. Therefore, this application provides a drainage tube fixing device that prevents traction, such as... Figure 1 As shown: It includes a wound care component 1, a drainage tube component 2, and a locking component 4. The drainage tube component 2 passes through the wound care component 1, and the locking component 4 is sleeved on the drainage tube component 2 on one side of the wound care component 1.

[0025] The key is, such as Figure 1 As shown, the locking component 4 is not positioned immediately adjacent to the wound dressing component 1, but rather fixed at a distance from the wound dressing component 1 at a predetermined distance (e.g., 5-10 cm) from the distal skin. This arrangement allows the drainage tube assembly 2 between the wound dressing component 1 and the locking component 4 to form a non-stressed, relaxed buffer section (i.e., Figure 1 The piping between the two components is naturally curved.

[0026] The locking assembly 4 includes a housing 43, a pressing cap 42 movably mounted on the housing 43, and an elastic element 45 disposed inside the housing 43. A bearing groove 44 is formed within the housing 43 to accommodate the passage of the drainage tube assembly 2. A clamping space is formed between the pressing cap 42 and the bearing groove 44. The elastic element 45 abuts against the bottom of the bearing groove 44 and between the pressing cap 42. Under the elastic force of the elastic element 45, the pressing cap 42 is held in a position that mechanically presses the drainage tube assembly 2 against the housing 43. This mechanical clamping force is designed to provide axial resistance much greater than the friction of the adhesive tape, limiting the sliding of the tube within the assembly. This differs from the traditional method of limiting the tube solely through friction, preventing axial creep or sliding of the tube.

[0027] In this embodiment, the segmented structural design of the wound protection component 1 and the locking component 4 achieves "stress isolation" of the drainage tube. The wound protection component 1 is mainly responsible for covering and protecting the proximal wound and does not bear the main traction load; while the locking component 4 is located at the distal end and uses a mechanical locking structure to bear external tension. When the drainage tube is subjected to unexpected external tension, the tension is first applied to the distal locking component 4. Since the mechanical locking prevents the tube from slipping, the tension is converted into a shear force on the distal skin. At this time, even if the distal skin undergoes a certain degree of elastic deformation, as long as the deformation distance is less than the length of the reserved relaxation buffer section in the middle, the tension cannot be transmitted to the proximal wound protection component 1, thereby effectively achieving stress isolation and completely avoiding stress on the wound suture site.

[0028] Alternatively, in some embodiments, please refer to Figure 4 and Figure 5 The middle part of the bearing groove 44 is provided with a lower groove 441, and the inner side of the outer shell 43 is provided with an upper groove 431 that is opposite to the lower groove 441; the tube body of the drainage pipe assembly 2 is located between the upper groove 431 and the lower groove 441, and is tightly fixed by the two.

[0029] Specifically, the outer casing 43 has a specific accommodating space inside. The lower groove 441 is typically designed as a semi-circular arc to fit the outer contour of the drainage tube assembly 2. Correspondingly, the upper groove 431 on the inner side of the outer casing 43 also adopts a matching shape. In its natural state, the elastic element 45 pushes the pressing cap 42 upward, causing the upper groove 431 and the lower groove 441 to come closer together, forming a closed or semi-closed rigid clamping ring that tightly holds the tube passing through it. This upper and lower clamping structure design, compared to unilateral compression, can provide a more uniform radial clamping force, ensuring that the tube will not slip axially when subjected to strong external force. This is the physical basis for maintaining the existence of the intermediate buffer section.

[0030] Alternatively, in some embodiments, please refer to Figure 4 and Figure 5 A flange 421 is provided on the outer peripheral wall of the pressing cap 42, and a groove 422 adapted to the flange 421 is provided on the inner side wall of the outer shell 43. When the pressing cap 42 is in the pressed position, the flange 421 is inserted into the groove 422 for position locking. When the pressing cap 42 moves downward against the elastic force of the elastic member 45, the flange 421 disengages from the groove 422.

[0031] In this structure, the flange 421 and the groove 422 constitute a locking mechanism. When the tube position does not need to be adjusted, the elastic element 45 (e.g., a coil spring) is in a naturally extended or slightly compressed state, pushing the pressing cap 42 upwards. At this time, the flange 421 is embedded inside the groove 422, firmly locking the clamping state and preventing clamping failure due to patient turning over or accidental contact. When medical staff need to adjust the position of the locking component 4 on the tube, they only need to press down the pressing cap 42, causing the flange 421 to disengage from the groove 422, releasing the limiting lock, and simultaneously widening the distance between the upper and lower grooves, allowing the tube to slide freely.

[0032] Alternatively, in some embodiments, please refer to Figure 3 The wound care component 1 includes a housing 12 and a throttle 11 disposed on the housing 12; the housing 12 is provided with an internal thread groove, and the drainage pipe component 2 is provided with an installation thread 22 corresponding to the position of the housing 12; the housing 12 is rotated by the throttle 11 to be threadedly locked with the installation thread 22.

[0033] This embodiment details the specific connection method of the proximal wound care component 1. The housing 12 is typically dome-shaped or dome-shaped, covering the puncture site. Unlike traditional adhesive tape, this solution prefabricates or adds a connector structure with mounting threads 22 to a specific section of the drainage tube component 2, which the housing 12 screws into through an internal thread groove. Medical personnel can achieve a rigid connection between the two by holding the handle 11 and rotating the housing 12. This structure mainly serves to guide and support the exit tube, preventing kinking, and, together with the adhesive plate at the bottom, protects the wound from external contamination.

[0034] Alternatively, in some embodiments, please refer to Figure 1 and Figure 3 The housing 12 is a cover structure made of transparent material; the bottom sides of the housing 12 are provided with first adhesive plates 3, and the sides of the outer shell 43 are provided with second adhesive plates 41.

[0035] The housing 12 is made of medical-grade transparent PC (polycarbonate) or transparent silicone, forming a visual observation window. This design allows medical staff to directly observe the skin around the puncture site for signs of redness, swelling, oozing, or infection without frequently removing the dressing. The first adhesive plate 3 and the second adhesive plate 41 are located at the proximal and distal ends, respectively, serving as the base for supporting the medical adhesive patch or hydrocolloid dressing.

[0036] Alternatively, in some embodiments, please refer to Figure 1 The drainage tube assembly 2 includes a suction tube 21, a drainage tube 23, and a negative pressure airbag 5; one end of the suction tube 21 is connected to the drainage tube 23, and the other end is connected to the negative pressure airbag 5; the suction tube 21 passes through the wound protection assembly 1 and the locking assembly 4 in sequence, and the installation thread 22 is provided on the outer wall of the suction tube 21.

[0037] This embodiment constructs a complete drainage circuit. The drainage tube 23 is typically thinner and used to penetrate deep into the wound; the suction tube 21 has a slightly larger diameter and is used for external connection, and has sufficient strength to allow for the installation thread 22. As the main load-bearing component, the suction tube 21 is typically harder than the drainage tube 23, which makes it easier to be mechanically held in place within the locking assembly 4 without clogging, thus ensuring the unity of drainage and fixation functions.

[0038] Alternatively, in some embodiments, please refer to Figure 2 The negative pressure airbag 5 is provided with a waste liquid outlet 51 for discharging waste liquid, and a sealing cap is provided at the waste liquid outlet 51.

[0039] The waste liquid outlet 51 solves the problem of difficult waste liquid discharge in traditional negative pressure balloons. Normally, after a negative pressure balloon is full, the pipeline connection needs to be disconnected to drain the liquid, which increases the risk of the pipeline end being exposed to air, potentially leading to retrograde infection. In this embodiment, when the balloon is full of liquid, simply open the sealing cap of the waste liquid outlet 51, squeeze the balloon to discharge the waste liquid, and after emptying, replace the sealing cap and squeeze the balloon again to restore the negative pressure state.

[0040] The overall working principle of this device is as follows: First, the drainage tube 23 is inserted into the patient's body and connected to the negative pressure cuff 5 through the suction tube 21. The housing 12 is placed on the suction tube 21, and the handle 11 is rotated to tighten the housing 12 with the mounting thread 22 on the suction tube 21. The housing 12 is then fixed around the wound by the first adhesive plate 3 to protect the wound. Press the pressing cap 42 of the locking assembly 4 to unlock the locking mechanism. Slide the locking assembly 4 along the suction tube 21 to a distal position at a certain distance (e.g., 5-10 cm) from the housing 12. Key step: Before fixing the locking assembly 4, adjust the tubing to maintain a natural, relaxed, and curved state between the housing 12 and the locking assembly 4 (i.e., leave a buffer section). Release the pressing cap 42. Under the action of the elastic element 45, the pressing cap 42 returns to its original position, the flange 421 engages with the groove 422, and the upper groove 431 and lower groove 441 tightly hold the suction tube 21, completing the mechanical locking. Finally, the locking assembly 4 is fixed to the distal skin by the second adhesive plate 41. When the drainage tube is pulled, the pulling force is borne by the locking assembly 4 and the second adhesive plate 41 below it. Even if the distal skin is pulled, as long as the displacement does not straighten the middle relaxation buffer section, the proximal wound is in a completely stress-free and safe state.

[0041] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A drag resistant drainage tube securement device, characterized in that, It includes a wound care component (1), a drainage tube component (2), and a locking component (4); The drainage tube assembly (2) passes through the wound dressing assembly (1), and the locking assembly (4) is sleeved on the drainage tube assembly (2) and fixed along the axial direction of the drainage tube assembly (2) at a distance from the wound dressing assembly (1) at the distal skin position, thereby forming a non-stressed relaxation buffer tube section between the wound dressing assembly (1) and the locking assembly (4). The locking assembly (4) includes a housing (43), a press cap (42) movably mounted on the housing (43), and an elastic element (45) disposed inside the housing (43). The outer casing (43) has a support groove (44) that accommodates the drainage pipe assembly (2) to pass through. A clamping space is formed between the pressing cap (42) and the support groove (44). The elastic member (45) abuts against the bottom of the support groove (44) and the pressing cap (42). Under the elastic force of the elastic member (45), the pressing cap (42) is held in a position that mechanically presses the drainage tube assembly (2) relative to the outer shell (43). The mechanical clamping force generated is used to resist external pulling force to limit the axial displacement of the drainage tube assembly (2) relative to the locking assembly (4), and ensure that the drainage tube assembly (2) between the wound protection assembly (1) and the locking assembly (4) can still maintain the shape of the relaxed buffer tube section when subjected to force at the distal end, so as to achieve the blocking of the force.

2. A pull-resistant drainage tube securement device as in claim 1, wherein, The bearing groove (44) has a lower groove (441) in the middle, and the inner side of the outer shell (43) has an upper groove (431) that is opposite to the lower groove (441); the tube of the drainage pipe assembly (2) is located between the upper groove (431) and the lower groove (441), and is held and fixed by the upper groove (431) and the lower groove (441) under the action of the elastic member (45).

3. A pull-resistant drainage tube securement device as in claim 1, wherein, The outer peripheral wall of the pressing cap (42) is provided with a flange (421), and the inner side wall of the outer shell (43) is provided with a groove (422) that matches the flange (421). When the pressing cap (42) is in the pressed position, the flange (421) is locked into the groove (422); when the pressing cap (42) moves downward against the elastic force of the elastic element (45), the flange (421) disengages from the groove (422) to release the axial lock on the drainage pipe assembly (2).

4. A pull-resistant drainage tube securement device as in claim 1, wherein, The wound care component (1) includes a housing (12) and a throttle (11) disposed on the housing (12). The housing (12) has an internal thread groove, and the drainage pipe assembly (2) has an installation thread (22) corresponding to the position of the housing (12). The housing (12) is rotated by the throttle (11) to lock with the installation thread (22).

5. A pull-resistant drainage tube securement device as in claim 4, wherein, The housing (12) is a cover structure made of transparent material; the bottom sides of the housing (12) are provided with first adhesive plates (3), and the sides of the outer shell (43) are provided with second adhesive plates (41).

6. The anti-pull drainage tube fixing device according to claim 4, characterized in that, The drainage tubing assembly (2) includes a suction tube (21), a drainage tube (23), and a negative pressure airbag (5); One end of the suction tube (21) is connected to the drainage tube (23), and the other end is connected to the negative pressure airbag (5); The suction tube (21) passes through the wound care assembly (1) and the locking assembly (4) in sequence, and the mounting thread (22) is provided on the outer wall of the suction tube (21).

7. The anti-pull drainage tube fixing device according to claim 6, characterized in that, The negative pressure airbag (5) is provided with a waste liquid outlet (51) for discharging waste liquid, and a sealing cap is provided at the waste liquid outlet (51).

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