A retractable drainage tube

Abstract

The present invention relates to the field of medical devices. The purpose of the present invention is to provide a retractable drainage tube, which includes a sheath tube for penetrating a wound and a drainage tube inserted in the sheath tube, wherein the front end of the sheath tube is provided with a fixing component clamped on the inner side of the wound, the rear end of the sheath tube is provided with an adjustment component for holding the drainage tube tightly, and the sheath tube is also sleeved with a sealing component that fits the outer side of the wound. The present invention has good stability in the wound, and has a simple structure, easy operation, and has the advantage of reducing the risk of wound infection.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, in particular to a telescopic drainage tube. Background Art

[0002] As an indispensable medical device, drainage tubes are used in a wide range of scenarios, from daily care to complex postoperative surgery. However, although traditional drainage tubes play an important role in promoting patient recovery, their inherent limitations have become increasingly prominent, becoming one of the key factors affecting treatment effectiveness and patient safety.

[0003] Specifically, the design of traditional drainage tubes is often limited to a fixed length and lacks the ability to be flexibly adjusted. In complex medical procedures, the distribution of fluid in the patient's body may be dynamically adjusted due to changes in the condition. At this time, the fixed length of the drainage tube is stretched. If the drainage depth is not enough to cover all the fluid that needs to be drained, it may lead to insufficient drainage, prolong the patient's recovery period, and even increase the risk of complications. In addition, when the depth of the drainage tube needs to be adjusted to cope with new situations, because the external part has been exposed to a non-sterile environment, traditional drainage tubes can often only be adjusted in a limited one-way direction, that is, in order to ensure the sterile environment of the drainage tube, the drainage tube located in the body can only be pulled outward, which undoubtedly limits its flexible application in clinical practice.

[0004] More seriously, the deficiencies in fixation and sealing of traditional drainage tubes also pose potential safety hazards. Ensuring the firm fixation and effective sealing of drainage tubes at the surgical incision is an important part of preventing infection. However, there is a lack of dressings designed specifically for drainage tubes on the market. The commonly used universal dressings often have difficulty in perfectly fitting the shape of drainage tubes, increasing the risk of bacterial invasion and posing a potential threat to the patient's recovery. Summary of the invention

[0005] The object of the present invention is to provide a retractable drainage tube which has good stability in a wound, a simple structure, is easy to operate, and has the advantages of reducing the risk of wound infection.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A retractable drainage tube comprises a sheath tube for penetrating a wound and a drainage tube inserted in the sheath tube, wherein the front end of the sheath tube is provided with a fixing component clamped on the inner side of the wound, the rear end of the sheath tube is provided with an adjusting component for clamping the drainage tube, and the sheath tube is also provided with a sealing component fitted with the outer side of the wound.

[0008] Compared with the prior art, the advantages of the present invention are:

[0009] 1. By setting the undulating section, the sealing component and the fixing component, when the undulating section is stretched or contracted and folded, the drainage tube can be driven to move synchronously, so that the drainage tube can adjust the drainage length in a sterile environment, and at the same time, the drainage tube is prevented from being separated from the wound due to the adjustment of the drainage length or the action of external force, thereby ensuring the stability during the drainage process;

[0010] 2. By setting the sealing dressing and the first elastic member, firstly, the front side of the sealing dressing is made to fit the skin around the wound to prevent external pollutants from entering the wound. Secondly, the sealing dressing is locked on the sheath through the first elastic member to achieve double fixation of the sealing dressing, which not only increases the stability of the sealing dressing, but also significantly improves the sealing performance and reduces the risk of infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a first embodiment of a telescopic drainage tube of the present invention;

[0012] Figure 2 yes Figure 1 Schematic diagram of the structural combination;

[0013] Figure 3 yes Figure 1 A simplified diagram of the structure of the sheath;

[0014] Figure 4 is a simplified structural diagram of the sealing assembly of the present invention;

[0015] Figure 5 is a simplified structural diagram of the first elastic member of the present invention;

[0016] Figure 6 is a schematic structural diagram of the second elastic member of the present invention;

[0017] Figure 7 It is a simplified structural diagram of the drainage tube of the present invention;

[0018] Figure 8 It is a simplified structural diagram of the undulating section of the present invention;

[0019] Fig. 9 This is a partial structural diagram of a second embodiment of a telescopic drainage tube of the present invention;

[0020] Fig.10 The present invention is a simplified structural diagram of the inner sheath of a telescopic drainage tube embodiment 3.

[0021] Explanation of reference numerals: 1 sheath tube, 100, abdominal wall surface, 11 internal sheath, 110 undulating section, 12 external sheath, 120 supporting ribs, 2 drainage tube, 200 drainage hole, 3 fixing assembly, 31 annular airbag, 32 inflation port, 4 sealing assembly, 41 sealing patch, 42 first holding ring, 420 first notch, 43 first elastic member, 431 first elastic band, 432 first matching seat, 44 groove, 5 adjustment assembly, 51 second holding ring, 510 second notch, 52 second elastic member, 521 second elastic band, 522 second matching seat. DETAILED DESCRIPTION

[0022] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0023] like Figure 1-8 FIG. 1 is a schematic diagram of a first embodiment of a retractable drainage tube provided by the present invention, and the first embodiment:

[0024] A retractable drainage tube comprises a sheath tube 1 for penetrating a wound and a drainage tube 2 inserted in the sheath tube 1, wherein the front end of the sheath tube 1 is provided with a fixing component 3 which is clamped on the inner side of the wound, the rear end of the sheath tube 1 is provided with an adjusting component 5 for holding the drainage tube 2, and the sheath tube 1 is also provided with a sealing component 4 which fits the outer side of the wound.

[0025] The fixing assembly 3 includes an annular airbag 31 disposed at the front end of the sheath tube 1 and an inflation port 32 located in the middle and rear section of the sheath tube 1 . An air path is connected between the annular airbag 31 and the inflation port 32 . A one-way air valve is also disposed in the inflation port 32 .

[0026] The sealing assembly 4 comprises a sealing dressing 41 that fits the wound surface, a first holding ring 42 fixed to the rear side of the sealing dressing 41, and a first elastic member 43. The sealing dressing 41 is also provided with a groove 44 for easy installation.

[0027] The first holding ring 42 is provided with a first notch 420 for facilitating its deformation, and the first elastic member 43 is connected to both sides of the first notch 420 to lock the first holding ring 42 on the sheath tube 1 .

[0028] Specifically, the front side of the sealing patch 41 is sticky, and a release paper is also provided on the front side of the sealing patch 41 .

[0029] The adjusting assembly 5 comprises a second holding ring 51 and a second elastic member 52 fixed to the rear end of the sheath tube 1;

[0030] The drainage tube 2 is inserted into the sheath tube 1 through the second holding ring 51 , and the second holding ring 51 is provided with a second notch 510 for facilitating its deformation. The second elastic member 52 is connected on both sides of the second notch 510 to lock the second holding ring 51 on the drainage tube 2 .

[0031] The first elastic member 43 includes a first elastic band 431 and a first matching seat 432 engaged with the first elastic band 431;

[0032] The first matching seat 432 and the first elastic band 431 are disposed on two sides of the first notch 420 . The first matching seat 432 is provided with a first clamping hole for the first elastic band 431 to pass through.

[0033] The second elastic member 52 includes a second elastic band 521 and a second matching seat 522 engaged with the second elastic band 521;

[0034] The second matching seat 522 and the second elastic band 521 are disposed on two sides of the second notch 510 . The second matching seat 522 is provided with a second clamping hole for the second elastic band 521 to pass through.

[0035] The front end of the drainage tube 2 is provided with a plurality of drainage holes 200 , and the plurality of drainage holes 200 are arranged in a circular array.

[0036] The middle and rear section of the sheath tube 1 is a retractable and foldable folding section 110 .

[0037] Embodiment 2: A retractable drainage tube

[0038] like Fig. 9 As shown, the basic structure of the second embodiment is generally similar to that of the first embodiment, and the difference between the second embodiment and the first embodiment is that the sheath tube 1 includes an internal sheath 11 that penetrates into the wound and an external sheath 12 that is connected to the rear end of the internal sheath 11, and the internal sheath 11 and the external sheath 12 are fitted with each other by interference fit. Specifically, the front end of the external sheath 12 penetrates into the inner side of the internal sheath 11 by interference fit, or the rear end of the internal sheath 11 penetrates into the inner side of the external sheath 12 by interference fit.

[0039] Furthermore, the internal sheath 11 and the external sheath 12 can be made of elastic materials such as silicone, rubber, etc.

[0040] Embodiment 3: A retractable drainage tube

[0041] like Fig.10 As shown, the basic structure of the third embodiment is generally similar to that of the second embodiment. The difference between the third embodiment and the second embodiment is that a plurality of supporting ribs 120 are arranged on the outer peripheral wall of the inner sheath 11. The supporting ribs 120 are used to increase the contact area between the inner sheath 11 and the wound to increase the friction force and further improve the stability of the inner sheath 11 penetrating into the wound.

[0042] The method of using the present invention is roughly as follows:

[0043] Step S1: The internal sheath 11 and the external sheath 12 are fitted together by interference fit to form an integrated sheath tube 1 (for the first embodiment, this step is not necessary).

[0044] Step S2: Pass the drainage tube 2 through the sheath tube 1, and fix the drainage tube 2 on the sheath tube 1 at a suitable position using the adjustment component 5. At this time, pulling the retractable and foldable wavy section 110 of the sheath tube 1 can drive the drainage tube 2 to move synchronously.

[0045] Step S3: insert the front end of the drainage tube 2 into the wound of the skin or other tissues (such as the abdominal wall 100) until the annular airbag 31 on the front end fixing component 3 of the sheath tube 1 enters the inner side of the abdominal wall 100. At this time, the annular airbag 31 is not injected with air and is in a contracted state.

[0046] Step S4: injecting air into the annular airbag 31 through the inflation port 32, so that the annular airbag 31 on the inner side of the abdominal wall surface 100 bulges, and at this time, even if the undulating section 110 is pulled, the drainage tube 2 cannot be pulled out of the wound;

[0047] Step S5: insert the sealing dressing 41 into the sheath tube 1 from the side thereof through the groove 44 , and slide the sealing dressing 41 to the outer side of the abdominal wall 100 , so that the sealing dressing 41 adheres to the skin around the wound of the abdominal wall 100 .

[0048] Step S6: The sealing dressing 41 is locked on the sheath tube 1 by the first elastic member 43. Since the front side of the sealing dressing 41 is bonded to the abdominal wall surface 100, and the sealing dressing 41 is locked on the sheath tube 1 by the first elastic member 43, the double fixation of the sealing dressing 41 is achieved, which not only increases the stability of the sealing dressing 41, but also ensures that the wound is not contaminated by external bacteria.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A retractable drainage tube, comprising a sheath tube (1) for penetrating a wound and a drainage tube (2) inserted into the sheath tube (1), characterized in that: The front end of the sheath tube (1) is provided with a fixing component (3) that is clamped to the inner side of the wound, the rear end of the sheath tube (1) is provided with an adjusting component (5) for holding the drainage tube (2) tightly, and the sheath tube (1) is also sleeved with a sealing component (4) that fits the outer side of the wound.

2. The telescopic drainage tube according to claim 1, characterized in that: The fixing assembly (3) comprises an annular airbag (31) arranged at the front end of the sheath tube (1) and an inflation port (32) located at the middle and rear section of the sheath tube (1); an air path is connected between the annular airbag (31) and the inflation port (32); a one-way air valve is also arranged in the inflation port (32).

3. The telescopic drainage tube according to claim 1, characterized in that: The sealing assembly (4) comprises a sealing dressing (41) that fits the wound surface, a first holding ring (42) fixed to the rear side of the sealing dressing (41), and a first elastic member (43); the sealing dressing (41) is also provided with a groove (44) for facilitating installation; The first holding ring (42) is provided with a first notch (420) for facilitating its deformation, and the first elastic member (43) is connected to both sides of the first notch (420) and is used to lock the first holding ring (42) onto the sheath tube (1).

4. The telescopic drainage tube according to claim 1, characterized in that: The adjustment component (5) comprises a second holding ring (51) and a second elastic member (52) fixed to the rear end of the sheath tube (1); The drainage tube (2) is inserted into the sheath tube (1) via the second holding ring (51), and the second holding ring (51) is provided with a second notch (510) for facilitating its deformation, and the second elastic member (52) is connected to both sides of the second notch (510) for locking the second holding ring (51) on the drainage tube (2).

5. The telescopic drainage tube according to claim 3, characterized in that: The first elastic member (43) comprises a first elastic band (431) and a first matching seat (432) snap-fitted and connected to the first elastic band (431); The first matching seat (432) and the first elastic band (431) are arranged on two sides of the first notch (420), and the first matching seat (432) is provided with a first clamping hole for allowing the first elastic band (431) to pass through.

6. The telescopic drainage tube according to claim 4, characterized in that: The second elastic member (52) comprises a second elastic band (521) and a second matching seat (522) snap-fitted and connected to the second elastic band (521); The second matching seat (522) and the second elastic band (521) are arranged on two sides of the second notch (510), and the second matching seat (522) is provided with a second clamping hole for allowing the second elastic band (521) to pass through.

7. The telescopic drainage tube according to claim 1, characterized in that: A plurality of drainage holes (200) are provided at the front end of the drainage tube (2), and the plurality of drainage holes (200) are arranged in a ring array.

8. The telescopic drainage tube according to any one of claims 1 to 7, characterized in that: The middle and rear section of the sheath tube (1) is a telescopic and foldable wavy section (110).

9. The telescopic drainage tube according to claim 8, characterized in that: The sheath tube (1) comprises an internal sheath (11) inserted into a wound and an external sheath (12) connected to the rear end of the internal sheath (11), and the internal sheath (11) and the external sheath (12) are fitted in an interference fit.

10. The telescopic drainage tube according to claim 9, characterized in that: A plurality of supporting ribs (120) are arranged on the outer peripheral wall of the internal sheath (11).

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