Negative pressure sealing drainage wound protecting device for body cavity wound

Abstract

A negative pressure sealing drainage wound protecting device for a body cavity wound comprises a drainage tube (1) and is characterized in that one end of the drainage tube (1) is inserted into a central blind hole of a porous sponge (3), the drainage tube (1) is arranged in the length direction of the porous sponge (3), and the other end of the drainage tube (1) extends out of the porous sponge (3). A plurality of drainage holes (4) are formed in the side wall, located in the porous sponge (3), of the drainage tube (1), and the distance from the drainage holes (4) in the top of the drainage tube (1) in the porous sponge (3) to the top of the porous sponge (3) is 1 / 3-1 / 2 of the length of the porous sponge (3). In the wound healing stage, tight sealing can still be achieved after multiple times of adjustment, the situation that sealing is not tight is avoided, and the negative pressure sealing drainage effect is good.

Description

Technical Field

[0001] The present application relates to a negative pressure drainage wound care device, and in particular to a negative pressure closed drainage wound care device for body cavity wounds, belonging to the technical field of medical devices. Background Art

[0002] The diversity and complexity of existing diseases and accidental injuries is reflected in the complexity and diversity of patient wounds. However, wound location primarily categorizes wounds into surface wounds and cavity wounds. Surface wounds are wounds located on the surface of the body relative to the body cavity, while cavity wounds are wounds located within the body cavity or deep cavities. Cavity wounds present significant surgical challenges due to low visualization, stringent safety requirements, and irregular wound patterns. For example, in surgeries such as radical mastectomy, Miles surgery for rectal cancer, radical vaginal tumor resection, fenestration and irrigation for osteomyelitis, and perineal blast injuries, when negative pressure sealing drainage is required, the lack of specialized deep cavity negative pressure sealing drainage materials means surgeons often must cut and trim conventional negative pressure sealing drainage materials for deep cavity use during surgery. This is time-consuming and labor-intensive, often delaying optimal surgical intervention. Furthermore, during the wound healing phase, cavity or deep cavity wounds gradually grow upward from the underlying granulation tissue until they heal. Usually, the existing treatment method in the healing stage is to pull out 1 / 3-1 / 2 of the negative pressure sealing drainage material 48-72 hours after the operation, cut off the pulled-out part of the porous sponge, re-seal it with a transparent film, and continue to wait for 48-72 hours for the granulation tissue at the bottom of the body cavity wound to move upwards before pulling out the negative pressure sealing drainage material. However, the drainage tube of the existing negative pressure sealing drainage device does not take into account the need for pulling out and cutting. After the porous sponge is pulled out and cut, the drainage hole exposes the porous sponge, which can easily cause a loose seal and affect the therapeutic effect of the negative pressure sealing drainage. There has been a lack of a negative pressure sealing drainage wound care device that is simple to operate, applicable to various body cavity wounds, tightly sealed, and has good therapeutic effects to solve the above technical problems. Summary of the Invention

[0003] The purpose of this application is to address the defects and shortcomings of the existing technology, which lacks a specific negative pressure sealing drainage device for the treatment of body cavity wounds. Conventional negative pressure sealing drainage devices are difficult to meet the needs of body cavity wounds and require on-site cutting and trimming, which is time-consuming and labor-intensive. In addition, it is not convenient to re-seal after multiple adjustments during the wound healing stage, which can easily cause a loose seal and affect the therapeutic effect of negative pressure sealing drainage. The purpose of this application is to provide a negative pressure sealing drainage wound care device for body cavity wounds that has a reasonable structure, is easy to operate, can be applied to various body cavity wounds, can still be tightly sealed after multiple adjustments during the wound healing stage, avoids the situation of loose sealing, and has a good negative pressure sealing drainage effect.

[0004] In order to achieve the purpose of the above application, the technical solution of the present application is: a negative pressure closed drainage wound care device for body cavity wounds, comprising a drainage tube, one end of the drainage tube is inserted into the central blind hole of the porous sponge, and the drainage tube is arranged along the length direction of the porous sponge, and the other end of the drainage tube extends out of the porous sponge, and a number of drainage holes are opened on the side wall of the drainage tube located inside the porous sponge, and the distance from the drainage hole at the top of the drainage tube inside the porous sponge to the top of the porous sponge is 1 / 3-1 / 2 of the length of the porous sponge.

[0005] Furthermore, the drainage tube is provided with a flushing tube inserted on the side wall outside the porous sponge, or the drainage tube is provided with a flushing tube inserted at one end outside the porous sponge, one end of the flushing tube is located in the flushing tube inserted into the porous sponge, and the other end of the flushing tube is located outside the drainage tube.

[0006] Furthermore, a flushing hole is provided on the wall of the drainage tube located inside the porous sponge, and a sealing cover is provided at one end of the flushing tube located outside the drainage tube.

[0007] Furthermore, the porous sponge is in the shape of an elongated cylinder or a rectangular parallelepiped, and the diameter of the central blind hole opened in the center of the porous sponge is smaller than or equal to the outer diameter of the drainage tube.

[0008] Furthermore, an elastic sealing film is provided on the outside of one end of the porous sponge, and the elastic sealing film is tightly sleeved on the outer wall of the drainage tube located outside the porous sponge.

[0009] Furthermore, the elastic sealing film also includes a sleeve, which has a certain elasticity and a pore size smaller than or equal to the outer diameter of the drainage tube. The sleeve is fixedly connected to the center hole of the elastic sealing film, or the sleeve and the elastic sealing film are an integrated structure.

[0010] Furthermore, a plurality of protrusions are provided on the outer wall of the drainage tube inserted into the porous sponge.

[0011] Furthermore, the protrusion is a barb structure, which extends away from the insertion direction of the drainage tube. The barb structure forms a certain obstacle to the drainage tube from coming out.

[0012] Furthermore, the drainage holes are evenly distributed along the axial and circumferential directions of the drainage tube.

[0013] Furthermore, the circumferentially adjacent drainage holes arranged in strips along the axial direction are staggered.

[0014] The beneficial effects of this application are:

[0015] 1. This application utilizes a long, porous sponge. One end of the drainage tube is inserted into the inner pore of the porous sponge. Several drainage holes are formed on the sidewall of the drainage tube within the porous sponge. This device can be easily inserted into deep cavities such as body cavities and sinuses, facilitating negative pressure sealed drainage. Furthermore, during the healing phase of a body cavity wound, portions of the porous sponge can be withdrawn in stages, and the excess can be trimmed. When resealed with a transparent film, a tight seal is maintained, thereby enhancing the therapeutic efficacy of negative pressure sealed drainage.

[0016] 2. This application incorporates an elastic sealing film on the outer surface of a porous sponge inserted into one end of the drainage tube. This film is tightly fitted over the drainage tube. This film not only seals the tube, reducing the likelihood of air leakage from the transparent film within the tube, but also provides surface-to-surface support for the transparent film, enhancing the ease of application. The film is also less susceptible to denting, effectively enhancing the device's sealing effectiveness within body cavities and deep cavities.

[0017] 3. This application provides protrusions on the outer wall of the drainage tube inserted into the porous sponge. This protrusion effectively prevents the drainage tube from detaching from the porous sponge when the negative pressure sealing drainage material is pulled outward during the healing phase of the body cavity wound. In particular, the use of a barbed structure improves the bond between the drainage tube and the porous sponge, making it less likely to detach due to relative movement. This improves the stability and convenience of the device during the healing phase.

[0018] 4. The drainage holes of the present application are evenly spaced along the axial and circumferential directions of the drainage tube, and the circumferentially adjacent drainage holes arranged in strips along the axial direction are staggered. This improves the spatial utilization and number of drainage holes, improves the drainage efficiency of the device, and enhances the structural stability of the drainage tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the first embodiment of this application.

[0020] Figure 2 yes Figure 1 Schematic diagram of the structure after removing the porous sponge.

[0021] Figure 3 yes Figure 2 A partial enlarged view of part a in the middle.

[0022] Figure 4 This is a schematic diagram of the end structure of the first embodiment of the present application.

[0023] Figure 5 yes Figure 4 Cross-sectional view of AA in the figure.

[0024] Figure 6 It is a structural diagram of the second embodiment of the present application.

[0025] Figure 7 This is a schematic structural diagram of the third embodiment of the present application after removing the porous sponge.

[0026] Figure 8 yes Figure 7 A partial enlarged view of part b in the middle.

[0027] In the figure: drainage tube 1, flushing tube 2, porous sponge 3, drainage hole 4, elastic sealing film 5, sleeve 6, protrusion 7, flushing hole 8, sealing cover 9. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] See also Figures 1 to 8 The present application discloses a negative pressure sealed drainage wound care device for body cavity wounds, comprising a drainage tube 1, one end of the drainage tube 1 being inserted into the central blind hole of the porous sponge 3, and the drainage tube 1 being arranged along the length direction of the porous sponge 3, and the other end of the drainage tube 1 extending out of the porous sponge 3, and a plurality of drainage holes 4 being provided on the side wall of the drainage tube 1 inside the porous sponge 3, and the distance from the drainage hole 4 at the top of the drainage tube 1 inside the porous sponge 3 to the top of the porous sponge 3 being 1 / 3-1 / 2 of the length of the porous sponge 3.

[0030] The drainage tube 1 is located on the side wall outside the porous sponge 3 and is inserted with a flushing tube 2, or the drainage tube 1 is located on one end outside the porous sponge 3 and is inserted with a flushing tube 2, one end of the flushing tube 2 is located in the flushing tube 2 inserted into the porous sponge 3, and the other end of the flushing tube 2 is located outside the drainage tube 1.

[0031] The drainage tube 1 is provided with a flushing hole 8 on its wall inside the porous sponge 3 , and a sealing cover 9 is provided on one end of the flushing tube 2 outside the drainage tube 1 .

[0032] The porous sponge 3 is in the shape of an elongated cylinder or a rectangular parallelepiped. The diameter of the central blind hole opened in the center of the porous sponge 3 is smaller than or equal to the outer diameter of the drainage tube 1 .

[0033] An elastic sealing film 5 is provided on the outside of one end of the porous sponge 3 , and the elastic sealing film 5 is tightly sleeved on the outer wall of the drainage tube 1 located outside the porous sponge 3 .

[0034] The elastic sealing film 5 also includes a sleeve 6, which has a certain elasticity and a pore size smaller than or equal to the outer diameter of the drainage tube 1. The sleeve 6 is fixedly connected to the center hole of the elastic sealing film 5, or the sleeve 6 and the elastic sealing film 5 are an integrated structure.

[0035] The outer wall of the drainage tube 1 inserted into the porous sponge 3 is provided with a plurality of protrusions.

[0036] The protrusion is a barb structure, which extends away from the insertion direction of the drainage tube. The barb structure forms a certain obstacle to the drainage tube 1 from coming out.

[0037] The drainage holes 4 are evenly distributed along the axial and circumferential directions of the drainage tube 1 .

[0038] The circumferentially adjacent drainage holes 4 arranged in strips along the axial direction are staggered.

[0039] As attached Figures 1 to 8 As shown, the present application is applicable to various body cavity wounds, and can be easily extended into deep cavities such as body cavities and sinuses, so as to facilitate negative pressure sealing and drainage of body cavities and deep cavities. When in use, the long strip of porous sponge 3 is extended into the deep cavity wound, and one end of the drainage tube 1 is inserted into the porous sponge 3, and a flushing tube 2 is provided. When the drainage tube 1 is blocked or the concentration of the wound tissue fluid is high, normal saline is injected into the flushing tube 2 to flush, cool, and reduce inflammation of the body cavity wound, and then the normal saline is drawn away by negative pressure to take away the blocked necrotic tissue and inflammatory tissue fluid, thereby improving the therapeutic effect on the wound. In addition, during the healing process of the body cavity wound, it is convenient to pull out and cut off the excess porous sponge 3 in batches, thereby avoiding the situation of causing loose sealing, and the negative pressure sealing and drainage effect is good. The specific structure is as follows:

[0040] The porous sponge 3 used in this application is in the shape of an elongated strip, which can be cylindrical or rectangular. These two shapes are convenient for penetrating deep into the body cavity and deep cavity wounds. In actual use, the cylindrical shape has the best effect. The contact surface between the rounded outer surface and the wound tissue is smoother, without edges and corners, and there is no sense of squeezing and pressure, which makes it safer to use and more comfortable for patients. The porous sponge 3 is provided with a central blind hole along the center of the length direction. The central blind hole is used to insert the drainage tube 1. The bottom end of the drainage tube 1 after insertion is still located in the porous sponge 3, and the aperture of the central blind hole is less than or equal to the outer diameter of the drainage tube 1. The drainage hole 4 at the top of the drainage tube 1 inside the porous sponge 3 is 1 / 3-1 / 2 of the length of the porous sponge 3 to the top of the porous sponge 3, so that in the body cavity wound healing stage, it is convenient to pull out 1 / 3-1 / 2 of the negative pressure sealing drainage material 48-72 hours after the operation. After cutting off the porous sponge 3 that has been pulled out, it can still be sealed tightly when it is sealed with a transparent film again.

[0041] The drainage tube 1 is located on the side wall outside the porous sponge 3 and is inserted with a flushing tube 2. One end of the flushing tube 2 is located in the flushing tube 2 inserted into the porous sponge 3. The diameter of the flushing tube 2 is smaller than the diameter of the drainage tube 1. Physiological saline can be injected through the flushing tube 2 to flush, cool down and reduce inflammation of the body cavity wound. The flushing tube 2 can also adopt another embodiment, that is, the flushing tube 2 is inserted from one end of the drainage tube 1 located outside the porous sponge 3. The other end of the flushing tube 2 of the above two embodiments is located outside the drainage tube 1, which is convenient for external physiological saline injection device. In addition, a flushing hole 8 is provided on the tube wall of the drainage tube 1 located in the porous sponge 3, and a sealing cover 9 is provided at the outer end of the flushing tube 2.

[0042] Aiming at the technical problem that the existing negative pressure sealing drainage material for deep cavity treatment is not good due to the fact that the film on the drainage tube is not supported and is easy to sag and cause air leakage, the present invention provides an elastic sealing film 5 on the outside of one end of the porous sponge 3. The elastic sealing film 5 is tightly sleeved on the outer wall of the drainage tube 1 located outside the porous sponge 3. Figure 6 The elastic sealing film 5 also includes a sleeve 6, which has a certain degree of elasticity and a pore size smaller than or equal to the outer diameter of the drainage tube 1. The sleeve 6 is fixedly connected to the central hole of the elastic sealing film 5, or the sleeve 6 and the elastic sealing film 5 are an integral structure. The elastic sealing film 5 not only seals the drainage tube, reducing the probability of air leakage from the transparent film at the drainage tube, but also provides surface-to-surface support for the transparent film used in actual use, further improving the sealing effect.

[0043] In addition, in order to prevent the drainage tube from being separated from the porous sponge when the negative pressure sealing drainage material is pulled out during the healing stage of the body cavity wound, the present invention provides a plurality of protrusions on the outer wall of the drainage tube 1 inserted into the porous sponge 3, which can significantly increase the resistance that the drainage tube 1 needs to overcome when it is separated from the porous sponge 3. The protrusions can be set as barbed structures, see Figure, Figure 8 The barb structure extends away from the insertion direction of the drainage tube, and the barb structure forms a certain obstacle to the removal of the drainage tube 1. The bonding between the drainage tube 1 and the porous sponge 3 is better and is not easy to separate due to relative movement.

[0044] The above content is a further detailed description of the present application in combination with the specific implementation methods. It cannot be considered that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, the present application will also have various simple replacements, improvements and changes without departing from the concept of the present application. Various simple replacements, improvements and changes made should be deemed to fall within the scope of protection of the present application.

Claims

1. A negative pressure closed drainage wound care device for body cavity wounds, comprising a drainage tube (1), characterized in that: One end of the drainage tube (1) is inserted into the central blind hole of the porous sponge (3), and the drainage tube (1) is arranged along the length direction of the porous sponge (3). The other end of the drainage tube (1) extends outside the porous sponge (3). A plurality of drainage holes (4) are provided on the side wall of the drainage tube (1) inside the porous sponge (3). The distance between the drainage hole (4) arranged at the top of the drainage tube (1) inside the porous sponge (3) and the top of the porous sponge (3) is 1 / 3-1 / 2 of the length of the porous sponge (3).

2. A negative pressure sealing drainage wound care device for body cavity wounds according to claim 1, characterized in that: The drainage tube (1) is located on the side wall outside the porous sponge (3) and is provided with a flushing tube (2) inserted therein, or one end of the drainage tube (1) located outside the porous sponge (3) is provided with a flushing tube (2) inserted therein, one end of the flushing tube (2) is located inside the flushing tube (2) inserted into the porous sponge (3), and the other end of the flushing tube (2) is located outside the drainage tube (1).

3. The negative pressure sealing drainage wound care device for body cavity wounds according to claim 1, characterized in that: The drainage tube (1) is provided with a flushing hole (8) on its wall located inside the porous sponge (3), and a sealing cover (9) is provided at one end of the flushing tube (2) located outside the drainage tube (1).

4. The negative pressure sealing drainage wound care device for body cavity wounds according to claim 1, characterized in that: The porous sponge (3) is in the shape of a long cylinder or a rectangular parallelepiped, and the diameter of the central blind hole opened in the center of the porous sponge (3) is smaller than or equal to the outer diameter of the drainage tube (1).

5. A negative pressure sealing drainage wound care device for body cavity wounds according to claim 1 or 4, characterized in that: An elastic sealing film (5) is provided on the outside of one end of the porous sponge (3), and the elastic sealing film (5) is tightly sleeved on the outer wall of the drainage tube (1) located outside the porous sponge (3).

6. The negative pressure sealing drainage wound care device for body cavity wounds according to claim 5, characterized in that: The elastic sealing film (5) further comprises a sleeve (6), the sleeve (6) having a certain elasticity and a pore diameter smaller than or equal to the outer diameter of the drainage tube (1), the sleeve (6) being connected and fixed to the center hole of the elastic sealing film (5), or the sleeve (6) and the elastic sealing film (5) forming an integral structure.

7. A negative pressure sealing drainage wound care device for body cavity wounds according to any one of claims 1 to 3, characterized in that: The outer wall of the drainage tube (1) inserted into the porous sponge (3) is provided with a plurality of protrusions.

8. The negative pressure sealing drainage wound care device for body cavity wounds according to claim 7, characterized in that: The protrusion is a barb structure, which extends away from the insertion direction of the drainage tube. The barb structure forms a certain obstacle to the drainage tube (1) from coming out.

9. The negative pressure sealing drainage wound care device for body cavity wounds according to claim 1, characterized in that: The drainage holes (4) are evenly distributed along the axial and circumferential directions of the drainage tube (1).

10. The negative pressure sealing drainage wound care device for body cavity wounds according to claim 9, characterized in that: The circumferentially adjacent drainage holes (4) arranged in a strip shape along the axial direction are staggered.

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