An apparatus for changing a wound dressing after an anorectal surgery
By designing a dressing replacement device for postoperative anorectal wound dressings with replaceable dressing components and protective air cushions, the problems of inconvenient dressing replacement and inaccurate fit after anorectal surgery are solved, enabling rapid and convenient dressing replacement and continuous drug action, thus promoting wound healing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HE BEI SHENG ZHONG YI YUAN (FIRST AFFILIATED HOSPITAL OF HEBEI UNIVERSITY OF TRADITIONAL CHINESE MEDICINE HEBEI CENTER FOR PREVENTION & CONTROL OF SCOLIOSIS IN CHILDREN & ADOLESCENTS)
- Filing Date
- 2025-04-01
- Publication Date
- 2026-06-12
AI Technical Summary
In existing technologies, changing dressings after anorectal surgery is inconvenient, and traditional fixation methods are difficult to accurately fit the complex physiological structure of the perianal area, leading to easy displacement or contamination of the dressing and affecting healing efficiency.
A postoperative dressing replacement device for anorectal surgery was designed, comprising a postoperative care pant, a replaceable dressing assembly, and a protective air cushion. The replaceable dressing assembly is connected to the dressing replacement window via a U-shaped zipper, and its bottom is flexibly connected by elastic webbing. It includes a C-shaped elastic fit base and a removable drug-releasing pad. The protective air cushion consists of a hip cushioning airbag and an inflatable arc-shaped cushioning cavity, supporting manual fine-tuning to adapt to different body shapes and postures.
It enables quick dressing changes without removing pants, the drug-releasing pad precisely fits the wound, and the protective air cushion reduces pressure, improving the convenience of dressing changes and healing efficiency, and ensuring the continuous effect of the medication.
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Figure CN224345087U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of postoperative care technology for anorectal surgery, and in particular to a device for changing dressings for postoperative anorectal wounds. Background Technology
[0002] This utility model relates to the field of anorectal postoperative care technology, specifically to an anorectal postoperative wound dressing replacement device, which is used to solve the needs of patients for wound dressing replacement and daily protection after anorectal surgery (such as hemorrhoids, anal fistula, etc.).
[0003] Currently, postoperative patients undergoing anorectal surgery require long-term use of dressings to cover the wound to promote healing, necessitating frequent dressing changes. Existing techniques commonly employ ordinary nursing pants or medical tape to secure gauze and other dressings. However, this approach has significant drawbacks:
[0004] Changing dressings is extremely inconvenient. Patients must completely remove their pants to expose the wound each time dressings are changed, which not only exacerbates postoperative pain but also easily leads to dressing displacement or contamination due to frequent dressing removal and removal. Furthermore, traditional dressing fixation methods (such as adhesive tape) are difficult to precisely fit the complex physiological structure of the perianal area, and dressings easily shift due to patient movement or changes in position, preventing medication from continuously reaching the wound and affecting healing efficiency.
[0005] The core issue is that current technology lacks a dressing component integrated into nursing pants that supports rapid changes, as well as a fixation structure capable of adaptively conforming to perianal wounds. Therefore, there is an urgent need for a novel device that simplifies the dressing change process, reduces patient discomfort, and ensures a stable fit of the dressing to the wound. Utility Model Content
[0006] To address the aforementioned technical problems, this utility model proposes a dressing replacement device for postoperative anorectal wounds. Protective air cushions are symmetrically positioned on both sides of the back of the postoperative care trousers. These air cushions consist of a buttock cushioning airbag, an arc-shaped cushioning chamber with an inflation groove for deformation energy absorption, and a micro-inflation valve with a valve for manual fine-tuning. The buttock cushioning airbag, after inflation, forms a concave arc-shaped structure that conforms to the contours of the patient's buttocks. The secondary cushioning of the inflation groove disperses pressure when sitting, reducing pressure on the wound. Users can adjust the inflation volume via the valve to accommodate different body types and sitting / lying postures, improving comfort. The protective air cushions, distributed on both sides of the dressing assembly, form an isolation barrier to prevent external pressure and impact, protecting the wound area.
[0007] The technical solution to achieve the purpose of this utility model is: a dressing replacement device for postoperative anorectal wounds, including a postoperative care pant, and further comprising;
[0008] The replaceable dressing assembly has a dressing change window on the back of the postoperative care pants. The upper edge of the replaceable dressing assembly is connected to the upper edge of the dressing change window via a U-shaped zipper. The bottom of the replaceable dressing assembly is flexibly connected to the lower edge of the dressing change window via an elastic webbing.
[0009] The replaceable dressing assembly includes a dressing body and an elastic base corresponding to the inner side of the postoperative care pants. A removable drug release pad is provided on the elastic base.
[0010] The protective air cushions are symmetrically arranged on both sides of the back of the postoperative care pants, corresponding to the buttocks. The protective air cushions are located on both sides of the dressing component. The protective air cushions include buttock cushioning airbags connected to the outer back of the postoperative care pants. The two buttock cushioning airbags have an inwardly recessed arc-shaped cushioning cavity on the adjacent side. Each arc-shaped cushioning cavity contains a miniature air valve.
[0011] Preferably, each of the buttock cushioning airbags is an arc-shaped strip, and after inflation, it has a concave arc structure facing the back of the postoperative care pants.
[0012] Preferably, the zipper component includes chain straps sewn onto the dressing change window and the adjacent side of the dressing fabric body, with a zipper head body movably connected between the two sets of chain straps.
[0013] Preferably, the inner side of the elastic fitting base is provided with an arc-shaped groove, and the elastic fitting base is used to be inserted into the patient's anus, with the arc-shaped groove being filled.
[0014] Preferably, the elastic bonding base is a flexible C-shaped structure.
[0015] Preferably, the ratio of the axial length L of the buttock cushioning airbag to the hip circumference of the postoperative care pants is 1:3.5-1:4.2.
[0016] Compared with existing technologies, the significant advantages of this invention are:
[0017] Firstly, this invention features a unique replaceable dressing assembly. The upper edge is connected to the upper edge of the dressing change window on the back of the postoperative care pants via a U-shaped zipper extending along the contour of the buttocks. The bottom is connected to the lower edge of the window via an elastic webbing. The assembly includes an elastic base with a C-shaped opening for clamping force and a replaceable drug-releasing pad. This design allows patients to change the drug-releasing pad without removing the postoperative care pants; simply unzipping the zipper is sufficient. The U-shaped trajectory avoids the wound area, reducing the risk of friction and greatly improving the convenience of dressing changes. Simultaneously, the C-shaped elastic base adapts to the gap between the buttocks and its elastic deformation, naturally squeezing into the anus and rectum when the patient wears the care pants, precisely aligning the drug-releasing pad with the wound, dynamically conforming to the skin around the wound, preventing displacement, and ensuring continuous and effective drug delivery to the wound. The drug-releasing pad can be independently removed and replaced, avoiding contamination of the dressing itself, making it the most practical structural design of this device.
[0018] Secondly, this invention features symmetrical protective air cushions on both sides of the back of the postoperative care pants. These air cushions consist of a buttock cushioning airbag, an arc-shaped cushioning chamber with an inflation groove for deformation energy absorption, and a micro-inflation valve with manual adjustment. The buttock cushioning airbag, after inflation, forms a concave arc-shaped structure that conforms to the contours of the patient's buttocks. The secondary cushioning of the inflation groove disperses pressure when sitting, reducing pressure on the wound. Users can adjust the inflation volume via the valve to accommodate different body types and sitting / lying postures, improving comfort. The protective air cushions are distributed on both sides of the dressing assembly, forming an isolation barrier to prevent external pressure and impact, protecting the wound area. Attached Figure Description
[0019] The present invention will be further explained below with reference to the accompanying drawings and embodiments:
[0020] Figure 1 This is a schematic diagram of the back opening state of the wound dressing changing device provided in one embodiment of the present invention;
[0021] Figure 2 This is a front view of a wound dressing changing device provided in one embodiment of the present invention;
[0022] Figure 3 This is a schematic diagram of the back-side flat position of the wound dressing changing device provided in one embodiment of the present invention;
[0023] Figure 4 This is a schematic diagram of the internal half-section structure of the wound dressing changing device provided in one embodiment of the present invention.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1. Postoperative care pants; 2. Dressing change window; 3. Dressing cloth body; 301. Chain belt; 302. Pull head body; 4. Elastic fit base; 401. Drug release pad; 5. Buttock cushioning airbag; 501. Arc-shaped cushioning cavity; 502. Miniature inflation valve. Detailed Implementation
[0026] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.
[0027] This utility model provides an improved surgical dressing replacement device for anorectal surgery. The technical solution of this utility model is as follows:
[0028] like Figure 1 - Figure 4 As shown, a surgical dressing changer for anorectal surgery includes a postoperative care pant 1. The postoperative care pant 1 has a dressing change window 2 on the back, and also includes a replaceable dressing assembly and a protective air cushion. The upper edge of the replaceable dressing assembly is connected to the upper edge of the dressing replacement window 2 via a U-shaped zipper component, and the bottom of the replaceable dressing assembly is flexibly connected to the lower edge of the dressing replacement window 2 via an elastic webbing. The replaceable dressing assembly includes a dressing cloth body 3 and an elastic fitting base 4 corresponding to the inner side of the postoperative care pants 1. A removable drug release pad 401 is provided on the elastic fitting base 4. Two sets of protective air cushions corresponding to the buttocks are symmetrically arranged on both sides of the back of the postoperative care pants 1. The protective air cushions are located on both sides of the dressing assembly. The protective air cushions include buttock cushioning airbags 5 connected to the outer back of the postoperative care pants 1. An inwardly recessed inflatable arc-shaped buffer cavity 501 is provided on the adjacent side of the two buttock cushioning airbags 5. Each inflatable arc-shaped buffer cavity 501 contains a miniature inflation valve 502.
[0029] like Figure 1 - Figure 3 As shown, in one embodiment, each of the buttock cushioning airbags 5 is an arc-shaped strip, and after inflation, it has a concave arc structure facing the back of the postoperative care pants 1. By setting the buttock cushioning airbags 5 to be arc-shaped strips and having a concave arc structure after inflation, they can better fit the contour of the patient's buttocks. When the patient sits down, this arc structure can distribute the pressure on the buttocks, reduce the pressure on the postoperative wound of anorectal surgery, provide more comfortable support for the patient, promote wound healing, and reduce pain and discomfort that may be caused by pressure.
[0030] like Figure 1 , Figure 3 and Figure 4 As shown, in one embodiment, the zipper component includes a chain strap 301 sewn onto the adjacent sides of the dressing change window 2 and the dressing body 3, with a zipper head 302 movably connected between the two sets of chain straps 301. By sewing the chain straps 301 onto the adjacent sides of the dressing change window 2 and the dressing body 3, and providing a movably connected zipper head 302, the user can easily open or close the zipper, thereby opening and closing the dressing body 3. This allows for dressing replacement without removing the postoperative care pants 1 when changing the drug release pad 401; simply opening the zipper allows for easy and convenient operation, reducing inconvenience and pain for the patient, and improving the efficiency of nursing care.
[0031] like Figure 1 and Figure 4 As shown, in one embodiment, the inner side of the elastic fitting base 4 is provided with an arc-shaped groove. The elastic fitting base 4 is used to be inserted into the patient's anus, and the interior of the arc-shaped groove is filled. By providing an arc-shaped groove on the inner side of the elastic fitting base 4 and enabling it to be inserted into the patient's anus, when the patient wears the postoperative care pants 1, the arc-shaped groove can better adapt to the shape of the patient's anorectal opening, allowing the drug release pad 401 to be more accurately aligned with the wound site, thereby improving the drug's effectiveness and promoting wound healing. At the same time, the elasticity of the elastic fitting base 4 ensures that it will not cause excessive discomfort to the patient when inserted.
[0032] In one embodiment, the elastic fitting base 4 is an elastic C-shaped structure. By setting the elastic fitting base 4 as an elastic C-shaped structure, this structure has a certain degree of elasticity and flexibility. When the patient wears the postoperative care pants 1, the elastic fitting base 4 can naturally squeeze into the patient's anus and the gap between the two buttocks, protecting the drug release pad 401 against the anus. This achieves a close fit to the skin around the wound, preventing the drug release pad 401 from shifting. At the same time, it can better adapt to the patient's body movements, reducing the possibility of the dressing loosening or falling off due to movement.
[0033] like Figure 1 , Figure 3 and Figure 4As shown, in one embodiment, the ratio of the axial length L of the buttock cushioning airbag 5 to the hip circumference of the postoperative care pants 1 is 1:3.5-1:4.2. By setting the axial length L of the buttock cushioning airbag 5 to the hip circumference of the postoperative care pants 1 within a suitable ratio range, the size of the buttock cushioning airbag 5 matches the size of the patient's buttocks. This achieves effective cushioning and support without affecting the patient's activity and comfort due to the airbag being too large or too small, ensuring a good experience for the patient during use and also facilitating wound healing.
[0034] The working principle and usage process of this utility model: This utility model aims to improve the postoperative care experience of anorectal surgery and promote wound healing, and meticulously constructs a collaborative working mechanism for each component. The design of the replaceable dressing component is extremely ingenious. The U-shaped zipper component extending along the contour of the buttocks smoothly connects the upper edge of the dressing replacement window 2 to the dressing cloth body 3. Combined with the flexible traction of the bottom elastic webbing, the component can be easily opened and closed. The elastic fitting base 4 with C-shaped opening clamping force, through elastic deformation, can adapt to the gap in the buttock crease, squeeze into the anorectal opening, and precisely position the drug-releasing pad 401, ensuring that the wound is tightly covered and dynamically conforming to the skin around the wound, preventing the drug-releasing pad 401 from shifting and continuously exerting its efficacy. At the same time, the drug-releasing pad 401 can be independently removed to avoid contaminating the dressing cloth body 3.
[0035] The protective air cushion is also ingeniously designed. Symmetrically distributed hip-cushioning airbags 5 on both sides of the back inflate into a concave arc shape, perfectly conforming to the contours of the buttocks. An adjacent arc-shaped cushioning chamber 501 effectively deforms and absorbs energy, providing secondary cushioning for the buttocks when sitting, reducing pressure on the wound. The miniature inflation valve 502 supports manual fine-tuning, allowing users to flexibly adjust the airbag pressure according to their body type and sitting / lying posture to suit different needs. Furthermore, the protective air cushion surrounds the dressing components, forming an effective isolation barrier for comprehensive wound protection.
[0036] Usage process:
[0037] Initial dressing: The patient gently puts on the postoperative care pants 1. During the process, the elastic base 4, with its own elasticity, naturally squeezes into the anal opening, accurately aligning the drug release pad 401 with the wound, thus initially completing the wound coverage and protection.
[0038] Air cushion adjustment: After putting on the garment, the patient can inflate or deflate the buttock cushioning airbag 5 through the micro inflation valve 502, according to their own comfort level. Carefully adjust the airbag pressure until the cushioning level that best suits their sitting or lying needs is found to ensure a comfortable experience.
[0039] Dressing Change: When the medication release pad 401 needs to be changed, the patient does not need to remove the nursing pants 1. Simply pinch the zipper head 302 and gently pull the zipper along the U-shaped path to open the replaceable dressing assembly. Then, carefully remove the old medication release pad 401 and replace it with the new one, taking care to avoid touching the wound area during the process. After the change is complete, zip the zipper back up to return the dressing assembly to its original position, ensuring that the wound continues to receive effective care.
[0040] Routine Maintenance: During daily activities, the protective air cushion continues to function, constantly buffering external pressure and protecting the wound. Patients can periodically check the air cushion pressure and make minor adjustments using the micro inflation valve 502 as needed. Simultaneously, monitor the fit between the elastic base 4 and the drug-releasing pad 401. If any abnormalities are found, adjust or replace the pad promptly to ensure the device is always in optimal working condition, aiding in rapid wound healing.
[0041] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.
Claims
1. A dressing changer for postoperative anorectal wounds, comprising a postoperative care trouser (1), characterized in that: Also includes; The replaceable dressing assembly has a dressing replacement window (2) on the back of the postoperative care pants (1). The upper edge of the replaceable dressing assembly is connected to the upper edge of the dressing replacement window (2) by a U-shaped zipper. The bottom of the replaceable dressing assembly is flexibly connected to the lower edge of the dressing replacement window (2) by an elastic webbing. The replaceable dressing assembly includes a dressing body (3) and an elastic fitting base (4) on the inner side of the dressing body (3) corresponding to the postoperative care pants (1). A removable drug release pad (401) is provided on the elastic fitting base (4). The protective air cushions are symmetrically arranged on both sides of the back of the postoperative care pants (1) and are corresponding to the buttocks. The protective air cushions are located on both sides of the dressing component. The protective air cushions include buttock cushion airbags (5) connected to the back of the postoperative care pants (1). The two buttock cushion airbags (5) are provided with an inwardly recessed inflatable arc-shaped buffer cavity (501) on the adjacent side. Each inflatable arc-shaped buffer cavity (501) contains a miniature air valve (502).
2. The postoperative dressing changer for anorectal surgery according to claim 1, characterized in that: Each of the hip cushioning airbags (5) is an arc-shaped strip and, after inflation, faces the concave arc structure of the back of the postoperative care pants (1).
3. The postoperative dressing changer for anorectal surgery according to claim 1, characterized in that: The zipper component includes a chain (301) sewn on the adjacent side of the dressing change window (2) and the dressing cloth body (3), and a zipper head body (302) is movably connected between the two sets of chain (301).
4. The postoperative dressing changer for anorectal surgery according to claim 1, characterized in that: The inner side of the elastic fitting base (4) is provided with an arc-shaped groove. The elastic fitting base (4) is used to be inserted into the anus of the patient and its arc-shaped groove is filled.
5. The postoperative dressing changer for anorectal surgery according to claim 1, characterized in that: The elastic bonding base (4) is a C-shaped structure with elasticity.
6. The postoperative dressing changer for anorectal surgery according to claim 1, characterized in that: The ratio of the axial length L of the buttock cushioning airbag (5) to the hip circumference of the postoperative care pants (1) is 1:3.5-1:4.2.