Wound surface sealing negative pressure drainage device

Abstract

The utility model discloses a wound surface sealing negative pressure drainage device which comprises a drainage cover filled with wound surface dressing and a liquid storage tank, a liquid outlet of the drainage cover is connected with a liquid inlet of the liquid storage tank through a drainage pipe, the liquid storage tank is provided with a negative pressure pipe connected with negative pressure equipment, the drainage cover comprises a funnel-shaped sealing part, and the sealing part is provided with a sealing part. A hollowed-out plate is arranged on the inner wall of the open end of the sealing part, and a plurality of short drainage pipe fittings and long drainage pipe fittings which are distributed at intervals and are different in length are arranged in the sealing part. According to the negative pressure drainage device, the plurality of short drainage pipe fittings and the plurality of long drainage pipe fittings which are independently distributed are arranged, so that a plurality of point-shaped negative pressure drainage channels can be formed on the inner side and the outer side of the hollow-out plate, and the plurality of point-shaped negative pressure drainage channels can be used for carrying out multi-point negative pressure drainage on tissue fluid exuded from a wound surface; the negative pressure in each negative pressure drainage channel is ensured to be relatively constant, so that interstitial fluid in the negative pressure drainage channels keeps flowing smoothly, and the negative pressure drainage efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of negative pressure drainage technology, and in particular to a wound closure negative pressure drainage device. Background Technology

[0002] Negative pressure wound therapy (NPWT) is a novel method for treating superficial wounds and for deep drainage. It can thoroughly remove secretions and necrotic tissue from cavities or wounds. This technique uses a drainage tube and negative pressure to fully drain wound exudate and necrotic tissue, reduce edema, reduce wound contamination, inhibit bacterial growth, and promote wound healing, thus achieving the therapeutic goal. At the same time, it eliminates the need for frequent dressing changes in the traditional treatment of open and severe soft tissue injuries, reducing patient suffering and the workload of medical staff.

[0003] Chinese Patent Publication No. CN217448553U discloses "A Surgical Wound Closed Negative Pressure Drainage Device", which includes a wound dressing. A drainage tube is provided at the top of the wound dressing. A negative pressure tank is provided at the end of the drainage tube away from the wound dressing. A cover plate is movably installed on the top of the negative pressure tank. An air suction tube is fixedly installed on the inner wall of the cover plate away from the drainage plate. A cleaning mechanism is provided inside the negative pressure tank. A sealing patch is provided at the bottom outer side of the wound dressing. An absorbent sponge is provided at the bottom inner side of the wound dressing. A drainage plate is provided between the absorbent sponge and the drainage tube.

[0004] The aforementioned negative pressure drainage device, through the setting of the drainage plate and the cleaning plate, the frustum-shaped drainage plate can concentrate the exudate absorbed by the absorbent sponge, so that the exudate absorbed inside the absorbent sponge can enter the negative pressure tank through the drainage tube. When the wound area is large, the space inside the wound dressing will also increase, causing the negative pressure of the wound dressing to vary at each point on the wound surface, resulting in the tissue fluid on the wound surface not being drained out normally and stably. Utility Model Content

[0005] The purpose of this invention is to provide a wound-sealing negative pressure drainage device that uses independently distributed short and long drainage tubes to perform multi-point uniform negative pressure drainage of tissue fluid in the wound, thereby maintaining the smooth flow of tissue fluid.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wound closure negative pressure drainage device, comprising a drainage hood filled with wound dressing and a reservoir:

[0007] The outlet of the drainage hood is connected to the inlet of the storage tank through a drainage pipe, and the storage tank is equipped with a negative pressure pipe connected to a negative pressure device.

[0008] The drainage hood includes a funnel-shaped sealing part, the inner wall of the open end of the sealing part is provided with a perforated plate, and a number of short drainage tubes and long drainage tubes of different lengths are provided in the sealing part.

[0009] As a further description of the above technical solution:

[0010] The short drainage tube is a short branch tube, and the inlet of the short branch tube is located inside the perforated plate.

[0011] As a further description of the above technical solution:

[0012] The long drainage tube is a long branch tube, and the inlet of the long branch tube is located on the outside of the perforated plate.

[0013] As a further description of the above technical solution:

[0014] The inner wall of the drainage hood is provided with a pipe clamp plate, which is sleeved on the outer wall of the liquid outlet of the short drainage pipe and the long drainage pipe.

[0015] As a further description of the above technical solution:

[0016] The bottom of the open end of the sealing part is provided with a flexible deformable part.

[0017] As a further description of the above technical solution:

[0018] The outer wall of the deformable part is provided with an adhesive patch.

[0019] As a further description of the above technical solution:

[0020] The storage tank includes a tank body, an end cap spirally mounted on the top outer wall of the tank body, a center rod spirally mounted on the bottom of the inner wall of the tank body, a scraper sleeved on the outer wall of the center rod, and a lifting tube mounted on the scraper and moving along its axial direction.

[0021] As a further description of the above technical solution:

[0022] The outer wall of the tank is provided with an observation window, and the observation window is provided with scale lines.

[0023] In the above technical solution, the wound closure negative pressure drainage device provided by this utility model has the following beneficial effects:

[0024] This negative pressure drainage device, through several independently distributed short and long drainage tubes, can form multiple point-like negative pressure drainage channels on the inner and outer sides of the perforated plate. This allows multiple point-like negative pressure drainage channels to drain tissue fluid exudated from the wound at multiple points, ensuring that the negative pressure in each negative pressure drainage channel is relatively constant, thereby maintaining the smooth flow of tissue fluid in the negative pressure drainage channels and improving the efficiency of negative pressure drainage. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 A schematic diagram of a wound closure negative pressure drainage device provided for an embodiment of this utility model;

[0027] Figure 2 A schematic diagram of the internal structure of the drainage hood provided in this embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the internal structure of the liquid storage tank provided in an embodiment of the present utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Adhesive patch; 2. Drainage cover; 21. Sealing part; 22. Pipe clamp; 23. Deformation part; 24. Perforated plate; 25. Short branch pipe; 26. Long branch pipe; 3. Drainage pipe; 4. Liquid storage tank; 41. End cap; 42. Tank body; 43. Center rod; 44. Lifting pipe; 45. Scraper; 5. Observation window; 6. Scale line; 7. Negative pressure pipe. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0032] like Figures 1-3 As shown, a wound closure negative pressure drainage device includes a drainage cover 2 filled with wound dressing and a reservoir 4.

[0033] The outlet of the drainage hood 2 is connected to the inlet of the storage tank 4 through the drainage pipe 3. The storage tank 4 is equipped with a negative pressure pipe 7 connected to the negative pressure device. When the drainage hood 2 is covered on the wound and the negative pressure pipe 7 is connected to the negative pressure device, a negative pressure environment can be formed in the storage tank 4, and the tissue fluid exuded from the wound can be negatively drained into the storage tank 4 for storage through the drainage pipe 3.

[0034] The drainage hood 2 includes a funnel-shaped sealing part 21. The inner wall of the open end of the sealing part 21 is provided with a perforated plate 24, which allows the perforated plate 24 to separate the tissue fluid exuded from the wound surface. The sealing part 21 is provided with several short drainage tubes and long drainage tubes of different lengths that are spaced apart. Through the several independently distributed short drainage tubes and long drainage tubes, multiple point-like negative pressure drainage channels can be formed on the inner and outer sides of the perforated plate 24. This allows multiple point-like negative pressure drainage channels to perform negative pressure drainage of the tissue fluid exuded from the wound surface at multiple points, ensuring that the negative pressure in each negative pressure drainage channel is relatively constant, thereby maintaining the smooth flow of tissue fluid in the negative pressure drainage channel and improving the efficiency of negative pressure drainage.

[0035] The short drainage tube is a short branch tube 25, with its inlet located inside the perforated plate 24. The long drainage tube is a long branch tube 26, with its inlet located outside the perforated plate 24. The short branch tube 25 can perform multi-point negative pressure drainage of tissue fluid containing fine tissue debris that has passed through the perforated plate 24. The long branch tube 26 can perform multi-point mesh-like negative pressure drainage of tissue fluid containing larger tissue debris that has passed through the perforated plate 24. Thus, the short branch tube 25 and the long branch tube 26 can perform uniform and comprehensive negative pressure drainage of tissue fluid exudated from the wound.

[0036] The inner wall of the drainage hood 2 is provided with a tube clamp 22, and the tube clamp 22 is sleeved on the outer wall of the outlet of the short drainage tube and the long drainage tube. It can clamp and fix the ends of the short branch tube 25 and the long branch tube 26, so that the tissue fluid in the short branch tube 25 and the long branch tube 26 can flow evenly into the drainage tube 3, achieving the effect of concentrated flow of tissue fluid.

[0037] A flexible deformable part 23 is provided at the bottom of the open end of the sealing part 21. An adhesive patch 1 is provided on the outer wall of the deformable part 23. The adhesive patch 1 is attached to the skin on the outside of the patient's wound to fix the position of the sealing part 21. The deformable part 23 can deform under pressure, so that the drainage cover 2 can be stably and sealed to the wound skin to prevent air leakage of the drainage cover 2.

[0038] The storage tank 4 includes a tank body 42. An end cap 41 is spirally installed on the top outer wall of the tank body 42. A center rod 43 is spirally installed on the bottom inner wall of the tank body 42. A scraper 45 is sleeved on the outer wall of the center rod 43. A lifting tube 44 is sleeved on the scraper 45 and moves along the axial direction of the center rod 43. The tissue fluid on the wound surface is drained into the tank body 42 by negative pressure for storage. When it is necessary to pour out the tissue fluid and clean the tank body 42, the end cap 41 is removed and the lifting tube 44 is pulled upward to move the scraper 45 upward. At this time, the scraper 45 will scrape and contact the inner wall of the tank body 42, which can scrape the tissue fluid in the tank body 42 upward and discharge it, thereby ensuring the cleanliness of the inner wall of the tank body 42.

[0039] The outer wall of the tank 42 is provided with an observation window 5, and the observation window 5 is provided with a scale line 6, which can intuitively and accurately understand the liquid level of the tissue fluid in the tank 42, and facilitate the pouring and cleaning of the tissue fluid in the storage tank 4.

[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A wound sealing negative pressure drainage device, comprising a drainage cover (2) filled with a wound dressing and a liquid storage tank (4), characterized in that: a liquid outlet of the drainage cover (2) is connected with a liquid inlet of the liquid storage tank (4) through a drainage tube (3), and a negative pressure tube (7) connected with a negative pressure equipment is arranged on the liquid storage tank (4); the drainage cover (2) comprises a funnel-shaped sealing part (21), an inner wall of an open end of the sealing part (21) is provided with a hollow plate (24), and a plurality of short drainage tube pieces and long drainage tube pieces distributed at intervals and having different lengths are arranged in the sealing part (21).

2. The wound closure negative pressure instillation device according to claim 1, wherein: the short drainage tube piece is a short branch pipe (25), and a liquid inlet of the short branch pipe (25) is located on an inner side of the hollow plate (24).

3. The wound closure negative pressure instillation device of claim 1, wherein: the long drainage tube piece is a long branch pipe (26), and a liquid inlet of the long branch pipe (26) is located on an outer side of the hollow plate (24).

4. The wound closure negative pressure instillation device of claim 1, wherein: a tube clamping plate (22) is arranged on an inner wall of the drainage cover (2), and the tube clamping plate (22) is sleeved on outer walls of liquid outlets of the short drainage tube piece and the long drainage tube piece.

5. The wound closure negative pressure instillation device of claim 1, wherein: a flexible deformation part (23) is arranged on a bottom of the open end of the sealing part (21).

6. The wound closure negative pressure instillation device of claim 5, wherein: an outer wall of the deformation part (23) is provided with a sticky patch (1).

7. The wound closure negative pressure instillation device of claim 1, wherein: the liquid storage tank (4) comprises a tank body (42), an outer wall of a top of the tank body (42) is spirally provided with an end cover (41), an inner wall of the tank body (42) is spirally provided with a middle rod (43) at a bottom end, an outer wall of the middle rod (43) is sleeved with a scraper (45), and a pull tube (44) is sleeved on the middle rod (43) and moves along an axial direction of the middle rod (43).

8. The wound closure negative pressure instillation device of claim 7, wherein: an outer wall of the tank body (42) is provided with an observation window (5), and the observation window (5) is provided with a scale line (6).

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