Closed negative pressure drainage device for wound surface

Abstract

The invention discloses a closed negative pressure drainage device for wound surfaces, and relates to the technical field of negative pressure treatment equipments.The top end of a separation drainage barrel is connected with a linkage closing cover through threads, the top end of the linkage closing cover is rotationally connected with a porous supporting plate, and a sealing porous plate is fixedly clamped to the middle of the inner side of the separation drainage barrel; one side of the top end of the sealing porous plate and one side of the top end of the porous supporting plate are both connected with inner hole threaded columns through threads, and the other side of the top end of the porous supporting plate is provided with a negative pressure pump through a motor base. And the situation that the drainage speed is uneven due to uneven air pressure is reduced, meanwhile, cleaning and rapid replacement of the drainage tube are achieved through the cleaning component and the fixing component, and the treatment stability can be guaranteed during negative pressure drainage.

Description

Technical Field

[0001] The invention relates to the technical field of negative pressure treatment equipment, and in particular to a closed negative pressure drainage device for a wound surface. Background Art

[0002] Negative pressure drainage of wounds is a treatment method used to promote wound healing, especially for chronic trauma, postoperative wounds, diabetic foot, etc. This technology uses a negative pressure system to improve blood supply to the wound, reduce the risk of infection, promote tissue regeneration and accelerate healing.

[0003] The patent with application number 202322500317.9 mentions "a closed negative pressure device for wound treatment". The patent is simple as a whole, which reduces the intensity of treatment and care for medical staff and reduces the consumables and time costs of treatment.

[0004] However, when the existing equipment is in use, because it directly connects the drainage tube to the negative pressure source and does not provide a middle buffer component, when the negative pressure source becomes unstable during negative pressure extraction, the overall negative pressure will undergo unstable changes, affecting the patient's comfort and the drainage speed. In addition, the drainage tube cannot be cleaned, resulting in the need to replace the entire drainage component if the pipeline is blocked during the drainage process, increasing the workload and cost. Summary of the invention

[0005] The present invention provides a closed negative pressure drainage device for a wound surface, which can effectively solve the problem raised in the above background technology that when the existing equipment is in use, because it directly connects the drainage tube to the negative pressure source and does not provide a middle buffer component, when the negative pressure source has unstable pressure during negative pressure extraction, the overall negative pressure will show unstable changes, affecting the patient's comfort and the drainage speed, and the drainage tube cannot be cleaned, resulting in the need to replace the entire drainage component if the pipeline is blocked during the drainage process, which increases the workload and cost.

[0006] To achieve the above object, the present invention provides the following technical solutions: a closed negative pressure drainage device for a wound surface, comprising a separation drainage bucket, wherein the separation drainage bucket is provided with a combined drainage component;

[0007] The combined drainage assembly includes a linked closure cover;

[0008] The top of the separation and drainage barrel is connected with a linkage closing cover through a thread, and the top of the linkage closing cover is rotatably connected to a porous support plate, a sealed porous plate is fixedly clamped at the middle of the inner side of the separation and drainage barrel, and one side of the sealed porous plate and the top of the porous support plate are both connected with an inner hole threaded column through a thread, and a negative pressure pump is installed on the other side of the top of the porous support plate through a motor seat, and one end of the negative pressure pump is connected with an extraction fixed pipe through an adapter, and the side ends of the two inner hole threaded columns are penetrated and connected with an extraction combination pipe, and the side end of the extraction combination pipe is penetrated and sleeved with a porous flushing pipe rack, and a storage fixed barrel is fixedly installed on the top of the sealed porous plate, and the top of the storage fixed barrel is penetrated and connected with an injection operation pipe;

[0009] A cleaning pump is installed at the top of the sealed porous plate near the storage fixed barrel through a motor seat, an external discharge injection pipe is connected through one end of the storage fixed barrel, the extraction combination pipe and one end of the porous flushing pipe rack are both rotatably connected with an internal threaded sleeve, the side end of the internal threaded sleeve is threadedly connected with an external threaded sleeve, and one end of one of the external threaded sleeves is rotatably connected with a combined extraction pipe;

[0010] A sponge fitting pad is penetrated and connected at one end of the combined extraction tube, a sealing fitting pad is fixed on the top of the sponge fitting pad, flexible adhesive plates are fixed to the bottom ends of the sealing fitting pad and the sponge fitting pad, a pressing airbag is fixed on the top of the sealing fitting pad, a sealing airbag is fixed at one end on the inner side of the linkage closing cover, one end of the pressing airbag and the sealing airbag are penetrated and connected with a threaded air injection tube, and a valve core is fixed on the inner side of the threaded air injection tube.

[0011] According to the above technical solution, an external processing tube is connected through one side of the top of the sealing porous plate, a sealing clamping ring is fixed to the bottom end of the inner side of the external processing tube, a supporting fixed block is fixed to one end of the inner side of the external processing tube, a pressing spring is installed at the bottom end of the supporting fixed block, a pressing processing frame is installed at the bottom end of the pressing spring, an external operation tube is connected through the middle of the bottom end of the separation and drainage barrel, a plurality of sealing springs are equidistantly fixed to the side end of the external operation tube, and a porous sealing sleeve is fixed to one end of the plurality of sealing springs;

[0012] A number of porous positioning blocks are equidistantly installed at the bottom of the side end of the separation and drainage barrel, and a support operation frame is passed through the top of multiple porous positioning blocks. A connecting support box is symmetrically installed at the side end of the separation and drainage barrel, an alignment spring is installed at one end of the inner side of the connecting support box, and an alignment plug-in frame is installed at one end of the alignment spring. Check valves are embedded and installed at one end of the injection operation tube and the combined extraction tube, and air pressure detectors are installed at the top of the sealing porous plate and the porous support plate.

[0013] According to the above technical solution, the cross-section of the top of the inner hole threaded column is a regular hexagon, the extraction fixed tube is installed through the top of the porous support plate, and the bottom of the side end of the extraction combination tube is placed inside the separation drainage barrel.

[0014] According to the above technical solution, the side end of the sealing airbag is fitted with the inner top of the separation drainage barrel, the bottom end of the pressing processing frame is sleeved and connected with the side end of the sealing clamping ring, and the pressing processing frame slides through the bottom end of the supporting fixed block.

[0015] According to the above technical solution, one end of the external discharge injection pipe is rotatably connected to one end of the external threaded sleeve, and one end of the cleaning pump is connected to one end of the external discharge injection pipe through an adapter.

[0016] According to the above technical solution, the alignment and insertion frame is slidably connected to the side end of the supporting operation frame, and the longitudinal section of the alignment and insertion frame is F-shaped.

[0017] According to the above technical solution, the side end of the porous sealing sleeve is slidably fitted with the side end of the external discharge operation pipe, and the extraction fixed pipe, extraction combined pipe, porous flushing pipe rack, injection operation pipe and external discharge injection pipe are all soft pipes;

[0018] The input ends of the negative pressure pump, the cleaning pump, the check valve and the air pressure detector are all electrically connected to the output end of the external controller;

[0019] The output terminal of the external controller is electrically connected to the input terminal of the external power supply.

[0020] According to the above technical solution, a protective component is provided at the bottom end of the sealing and fitting pad;

[0021] The protective assembly includes a hard fixing sleeve;

[0022] A hard fixing sleeve is fixed equidistantly at the bottom end of the sealing fitting pad, a pressing linkage tube is sleeved on the inner side of the hard fixing sleeve, a pressing sealing ring is fixed to one end of the inner side of the pressing linkage tube, a matching porous block is fixed to one end of the inner side of the pressing linkage tube away from the pressing sealing ring, a matching spring is fixed to one end of the matching porous block, an aligning matching frame is installed at one end of the matching spring, a laser sensor is installed at one end of the aligning matching frame, and a laser feedback device is fixed to one end of the matching porous block;

[0023] An installation integration sleeve is fixed to the middle part of the inner side of the pressed-fit linkage tube, a number of button batteries are equidistantly installed on the inner side of the installation integration sleeve, a buzzer alarm is fixed to one end of the installation integration sleeve, a porous injection tube is sleeved on the inner side of the sponge fitting pad, and an externally connected threaded tube is connected to the side end of the porous injection tube through an adapter, and a sealing treatment cover is sleeved on one end of the injection operation tube, the threaded air injection tube, the pressed-fit linkage tube and the externally connected threaded tube.

[0024] According to the above technical solution, one end of the alignment and matching frame is sleeved with one end of the press-fit sealing ring, and the alignment and matching frame is installed through the side end of the matching porous block.

[0025] According to the above technical solution, the pressed linkage tube, the porous injection tube and the externally threaded tube are all hard tubes;

[0026] The input ends of the laser sensor, laser feedback device and buzzer alarm are all electrically connected to the output end of the button battery, the signal output ends of the laser sensor and laser feedback device are all electrically connected to the signal input end of the external controller, and the signal input end of the buzzer alarm is electrically connected to the signal output end of the external controller.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. A combined drainage component is provided, and the porous support plate and the separation drainage bucket are combined and restricted by the linkage closing cover, and the extraction combined pipe, the porous connecting plate and the sealing porous plate are combined and fixed by the inner hole threaded column, and the combined extraction pipe and the extraction combined pipe and the porous flushing pipe rack are combined and connected with the external discharge injection pipe by the inner threaded sleeve and the outer threaded sleeve, so that when the pipeline is blocked and the liquid cannot be pumped, it can be quickly disassembled and replaced, and only the pipeline is replaced, reducing the replacement cost, and the inside of the extraction combined pipe is flushed by the flushing pump, the external discharge injection pipe and the porous flushing pipe, reducing the occurrence of blockage, thereby reducing the tediousness of cleaning and ensuring the stability of continuous use of the pipeline;

[0029] The air in the separation and drainage bucket is extracted by a negative pressure pump and an extraction fixed tube, and real-time detection is performed in conjunction with an air pressure detector. The compression spring is used to push the compression processing frame and the sealing clamping ring to operate in combination. At the same time, the separation and drainage bucket is divided into two spaces by a sealed porous plate. The air pressure difference between the two spaces is used to perform passive air pressure correction in the top space of the separation and drainage bucket, and active air pressure correction in the bottom space of the separation and drainage bucket. When the air pressure in the top space is greater than that in the bottom space, the external exhaust processing tube is sealed. When the top space is less than that in the bottom space, the external exhaust processing tube is opened to achieve self-adjustment of exhaust, thereby avoiding the situation where the air pressure changes too quickly or the pressure is excessive and affects the extraction of liquid, and ensuring the uniformity and stability of the operation.

[0030] By combining and cooperating with each other, the external discharge pipe and the internal extraction pipe are separated, and the liquid flushing treatment is combined to reduce the need for pipe replacement, thereby reducing the complexity of operation and reducing nursing costs. Double-layer exhaust and isolated exhaust are combined to stabilize the air pressure at the extraction position, effectively solving the problem in the prior art that the drainage tube is in direct contact with the negative pressure source, resulting in changes in air pressure that directly affect the patient's comfort, and reducing the occurrence of uneven drainage speed caused by uneven air pressure. At the same time, cleaning components and fixing components are used to clean and quickly replace the drainage tube, so that the stability of the treatment can be guaranteed during negative pressure drainage.

[0031] 2. A protective component is provided, which uses external air pressure to push the alignment frame to fit onto the side end of the compression sealing ring, and uses a spring to drive the alignment frame to move in the opposite direction. When moving, it cooperates with the laser sensor and the laser feedback device to measure the distance between each other, and uses a buzzer alarm for alarm processing, so that when the negative pressure environment at the sealing fitting pad position changes significantly and the negative pressure extraction cannot be stable, and the internal and external air pressure difference becomes smaller, timely reminders can be made to avoid the inability to effectively drain the wound liquid due to the change in the negative pressure environment, resulting in liquid accumulation and contamination of the wound. The external threaded tube is connected to the threaded joint of the infusion tube, and the infusion tube, the external threaded tube and the porous injection tube are used to drip the liquid required for disinfection to the wound position, so that the wound can be drained and disinfected at the same time, without the need for medical staff to repeatedly disassemble and assemble, reducing the tediousness of the operation and reducing the occurrence of bacteria contacting and infecting the wound.

[0032] In summary, by combining the drainage components and the protection components to cooperate with each other, the isolated negative pressure drainage and the external active air pressure detection can be coordinated with each other, so that the occurrence of large changes in air pressure at the wound location can be reduced during negative pressure drainage extraction, and by connecting the injection cleaning and continuous extraction and external discharge to cooperate with each other, the difficulty and complexity of the operation for medical staff are reduced. Through the cooperation of multiple components, the stability of the drainage, the comfort of the patient experience and the convenience of the medical staff's operation are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0034] In the attached picture:

[0035] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0036] Figure 2 is a schematic structural diagram of a combined drainage assembly of the present invention;

[0037] Figure 3It is a schematic diagram of the installation structure of the sealed porous plate of the present invention;

[0038] Figure 4 It is a schematic diagram of the installation structure of the injection operation pipe of the present invention;

[0039] Figure 5 The present invention Figure 4 A magnified schematic diagram of the structure of A;

[0040] Figure 6 The present invention Figure 4 A magnified schematic diagram of the B structure;

[0041] Figure 7 is a schematic structural diagram of a flexible adhesive plate of the present invention;

[0042] Figure 8 is a schematic structural diagram of the protection assembly of the present invention;

[0043] Fig. 9 It is a schematic diagram of the installation structure of the porous injection pipe of the present invention;

[0044] Fig.10 The present invention Fig. 9 A magnified schematic diagram of the C structure;

[0045] Numbers in the figure: 1. Separation drainage bucket;

[0046] 2. Combined drainage assembly; 201. Linked closing cover; 202. Multi-porous support plate; 203. Sealed multi-porous plate; 204. Inner hole threaded column; 205. Negative pressure pump; 206. Extraction fixed tube; 207. Extraction combined tube; 208. Multi-porous flushing tube rack; 209. Storage fixed barrel; 210. Injection operation tube; 211. Cleaning pump; 212. External discharge injection tube; 213. Inner threaded sleeve; 214. Outer threaded sleeve; 215. Combined extraction tube; 216. Sponge fitting pad; 217. Sealed fitting pad; 218. Flexible adhesive plate ; 219, pressed airbag; 220, sealed airbag; 221, threaded air injection pipe; 222, valve core; 223, external processing pipe; 224, sealing snap ring; 225, support fixing block; 226, pressed spring; 227, pressed processing frame; 228, external operation pipe; 229, sealing spring; 230, porous sealing sleeve; 231, porous positioning block; 232, connecting support box; 233, alignment spring; 234, alignment plug-in frame; 235, check valve; 236, air pressure detector; 237, support operation frame;

[0047] 3. Protective assembly; 301. Hard fixing sleeve; 302. Pressed linkage tube; 303. Pressed sealing ring; 304. Matching porous block; 305. Matching spring; 306. Alignment matching frame; 307. Laser sensor; 308. Laser feedback device; 309. Installation integration sleeve; 310. Button battery; 311. Buzzer alarm; 312. Porous injection tube; 313. External threaded tube; 314. Sealing treatment cover. DETAILED DESCRIPTION

[0048] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0049] Example: Figure 1-10 As shown, the present invention provides a technical solution, a closed negative pressure drainage device for a wound surface, comprising a separation drainage barrel 1, wherein the separation drainage barrel 1 is provided with a combined drainage component 2;

[0050] The combined drainage assembly 2 includes a linkage closed cover 201, a porous support plate 202, a sealed porous plate 203, an inner hole threaded column 204, a negative pressure pump 205, an extraction fixed tube 206, an extraction combined tube 207, a porous flushing tube rack 208, a storage fixed barrel 209, an injection operation tube 210, a cleaning pump 211, an external discharge injection tube 212, an inner threaded sleeve 213, an outer threaded sleeve 214, a combined extraction tube 215, a sponge fitting pad 216, a sealing fitting pad 217, and a flexible adhesive plate 21 8. Pressing airbag 219, sealing airbag 220, threaded air injection pipe 221, valve core 222, external discharge processing pipe 223, sealing clamping ring 224, supporting fixing block 225, pressing spring 226, pressing processing frame 227, external discharge operation pipe 228, sealing spring 229, porous sealing sleeve 230, porous positioning block 231, connecting support box 232, alignment spring 233, alignment plug-in frame 234, check valve 235, air pressure detector 236 and supporting operation frame 237;

[0051] The top of the separation and drainage barrel 1 is connected to a linkage closing cover 201 through a thread, and the top of the linkage closing cover 201 is rotatably connected to a porous support plate 202. A sealed porous plate 203 is fixedly clamped in the middle of the inner side of the separation and drainage barrel 1. The sealed porous plate 203 and one side of the top of the porous support plate 202 are both connected to an inner hole threaded column 204 through a thread. The cross-section of the top of the inner hole threaded column 204 is a regular hexagon, which realizes steady connection and separation and ensures the convenience of equipment replacement. A negative pressure pump 205 is installed on the other side of the top of the porous support plate 202 through a motor seat. One end of the negative pressure pump 205 is connected to an extraction fixed pipe 206 through an adapter. The extraction fixed pipe 206 runs through and is installed on the porous support plate 20 2 top, realize steady alignment support, the side ends of the two inner hole threaded columns 204 are connected with the extraction combination pipe 207, the bottom of the side end of the extraction combination pipe 207 is placed inside the separation and drainage bucket 1, to ensure the steady operation of extraction and injection, the side end of the extraction combination pipe 207 is connected with the porous flushing pipe rack 208, the top of the sealed porous plate 203 is fixedly installed with a storage fixed barrel 209, the top of the storage fixed barrel 209 is connected with the injection operation pipe 210, the extraction fixed pipe 206, the extraction combination pipe 207, the porous flushing pipe rack 208, the injection operation pipe 210 and the external discharge injection pipe 212 are all hoses, to ensure that they can be effectively bent during use, to ensure the applicability of the operating environment;

[0052] A cleaning pump 211 is installed at the top of the sealed porous plate 203 near the storage fixed barrel 209 through the motor seat, an external discharge injection pipe 212 is connected to one end of the storage fixed barrel 209, one end of the external discharge injection pipe 212 is rotatably connected to one end of the external threaded sleeve 214, one end of the cleaning pump 211 is connected to one end of the external discharge injection pipe 212 through an adapter, to achieve steady linkage operation, to ensure steady operation of cleaning the external discharge, the extraction combination pipe 207 and one end of the porous flushing pipe rack 208 are both rotatably connected to the internal threaded sleeve 213, the side end of the internal threaded sleeve 213 is threadedly connected to the external threaded sleeve 214, one end of one of the external threaded sleeves 214 is rotatably connected to the combined extraction pipe 215;

[0053] One end of the combined extraction tube 215 is connected through a sponge fitting pad 216, a sealing fitting pad 217 is fixed to the top of the sponge fitting pad 216, and a flexible adhesive plate 218 is fixed to the bottom of the sealing fitting pad 217 and the sponge fitting pad 216, and a pressing airbag 219 is fixed to the top of the sealing fitting pad 217, and a sealing airbag 220 is fixed to the inner end of the linkage closing cover 201, and the side end of the sealing airbag 220 is fitted with the inner top of the separation drainage barrel 1 to achieve steady pressing and sealing, and one end of the pressing airbag 219 and the sealing airbag 220 are connected through a threaded air injection pipe 221, and a valve core 222 is fixed to the inner side of the threaded air injection pipe 221;

[0054] An external treatment pipe 223 is connected through one side of the top of the sealing porous plate 203, and a sealing clamping ring 224 is fixed to the bottom inner end of the external treatment pipe 223. A supporting fixed block 225 is fixed to one end of the inner side of the external treatment pipe 223. A pressing spring 226 is installed at the bottom end of the supporting fixed block 225, and a pressing processing frame 227 is installed at the bottom end of the pressing spring 226. The bottom end of the pressing processing frame 227 is sleeved and connected with the side end of the sealing clamping ring 224, and the pressing processing frame 227 slides through the bottom end of the supporting fixed block 225 to ensure the stability of the clamping support and the positioning support. An external operation pipe 228 is connected through the middle of the bottom end of the separation and drainage barrel 1, and a plurality of sealing springs 229 are equidistantly fixed to the side end of the external operation pipe 228. A plurality of sealing springs 229 are fixed to one end of a porous sealing sleeve 230, and the side end of the porous sealing sleeve 230 is slidably sleeved with the side end of the external operation pipe 228 to achieve steady opening and closing of sewage treatment;

[0055] A plurality of porous positioning blocks 231 are equidistantly installed at the bottom of the side end of the separation and drainage barrel 1, and a support operating frame 237 is penetrated at the top of the plurality of porous positioning blocks 231, and an alignment plug-in frame 234 is slidably connected to the side end of the support operating frame 237, and the longitudinal section of the alignment plug-in frame 234 is F-shaped, so as to realize the steady engagement and limit of the support operating frame 237, and ensure the stability of its support positioning and fixed limit, and a connecting support box 232 is symmetrically installed at the side end of the separation and drainage barrel 1, and an alignment spring 233 is installed at one end of the inner side of the connecting support box 232, and an alignment plug-in frame 234 is installed at one end of the alignment spring 233, and a check valve 235 is embedded and installed at one end of the injection operation tube 210 and the combined extraction tube 215, and an air pressure detector 236 is installed at the top of the sealing porous plate 203 and the porous support plate 202;

[0056] For stable operation of the device, the input ends of the negative pressure pump 205, the cleaning pump 211, the check valve 235 and the air pressure detector 236 are all electrically connected to the output end of the external controller;

[0057] The output terminal of the external controller is electrically connected to the input terminal of the external power supply.

[0058] A protective component 3 is provided at the bottom end of the sealing and fitting pad 217;

[0059] The protection component 3 includes a hard fixing sleeve 301, a pressed linkage tube 302, a pressed sealing ring 303, a matching porous block 304, a matching spring 305, an alignment matching frame 306, a laser sensor 307, a laser feedback device 308, an installation integration sleeve 309, a button battery 310, a buzzer alarm 311, a porous injection tube 312, an external threaded tube 313 and a sealing treatment cover 314;

[0060] A hard fixing sleeve 301 is fixed equidistantly at the bottom end of the sealing and fitting pad 217, a pressing linkage tube 302 is sleeved on the inner side of the hard fixing sleeve 301, a pressing sealing ring 303 is fixed on one end of the inner side of the pressing linkage tube 302, a matching porous block 304 is fixed on one end of the inner side of the pressing linkage tube 302 away from the pressing sealing ring 303, a matching spring 305 is fixed on one end of the matching porous block 304, an alignment matching frame 306 is installed on one end of the matching spring 305, one end of the alignment matching frame 306 is sleeved on one end of the pressing sealing ring 303, the alignment matching frame 306 is installed through the side end of the matching porous block 304 to achieve steady alignment sealing and ensure stable operation of the limit, a laser sensor 307 is installed on one end of the alignment matching frame 306, and a laser feedback device 308 is fixed on one end of the matching porous block 304;

[0061] An installation integration sleeve 309 is fixed to the middle of the inner side of the press-fit linkage tube 302, and a number of button batteries 310 are equidistantly installed inside the installation integration sleeve 309. A buzzer alarm 311 is fixed to one end of the installation integration sleeve 309. A porous injection tube 312 is sleeved on the inner side of the sponge fitting pad 216. The side end of the porous injection tube 312 is connected to an external threaded tube 313 through an adapter. The press-fit linkage tube 302, the porous injection tube 312 and the external threaded tube 313 are all hard tubes to ensure the stability of the fixed limit and protective linkage. The injection operation tube 210, the threaded gas injection tube 221, the press-fit linkage tube 302 and one end of the external threaded tube 313 are all sleeved with a sealing treatment cover 314.

[0062] For stable operation of the equipment, the input ends of the laser sensor 307, the laser feedback device 308 and the buzzer alarm 311 are electrically connected to the output end of the button battery 310, the signal output ends of the laser sensor 307 and the laser feedback device 308 are electrically connected to the signal input end of the external controller, and the signal input end of the buzzer alarm 311 is electrically connected to the signal output end of the external controller.

[0063] The working principle and use process of the present invention are as follows: when it is necessary to use a drainage device to drain the patient's wound, the medical staff inserts the bottom end of the extraction combination tube 207 into the inner side of the sealing porous plate 203 and the separation drainage bucket 1 through the inner hole threaded column 204. At this time, the porous flushing tube holder 208 and the external discharge injection tube 212 are combined and connected through the inner threaded sleeve 213 and the outer threaded sleeve 214 to achieve a steady fixed operation, and the extraction combination tube 207 is fitted to the top of the porous support plate 202 by using the inner hole threaded column 204. At this time, the threaded air injection tube 221 is connected to the external air pump, and the air is injected into the sealing airbag 220 through the air pump. The edge sealing is achieved by pressurizing and limiting, and the valve core 222 is used for non-return treatment. The extraction combination tube 207 is fixed and limited by the inner hole threaded column 204, which is convenient for the staff to quickly assemble and operate, so that the pipeline can be replaced quickly.

[0064] After the fixing is completed, the porous support plate 202 and the linkage closing cover 201 are fitted onto the top of the separation and drainage barrel 1, and the linkage closing cover 201 is rotated. At this time, the porous support plate 202 does not rotate, and the linkage closing cover 201 is fixedly connected to the separation and drainage barrel 1 through the threaded parts. After the fixing is completed, the support operating frame 237 is pushed down along the porous positioning block 231, and the side end of the support operating frame 237 is slid to the side end of the alignment plug-in frame 234. The alignment spring 233 drives the alignment plug-in frame 234 to engage and limit the support operating frame 237 along the connection support box 232. The separation and drainage barrel 1 is supported and limited by the support operating frame 237 and the porous positioning block 231, so as to achieve steady support and fixation, ensure the fixed height of the equipment, and avoid the equipment being too low to affect the operation;

[0065] After the combined connection is completed, the device is powered by an external controller and a power supply, and the medical staff attaches the sealing fitting pad 217 and the sponge fitting pad 216 to the patient's wound position. Through the flexible bonding of the flexible adhesive plate 218, the sealing fitting pad 217 and the sponge fitting pad 216 are flatly and tightly attached to the skin around the wound. At this time, the threaded air injection tube 221 is connected to the external air pump, and air is injected into the pressing airbag 219 through the air pump. Through the pressurized limit, steady pressing is achieved, and the valve core 222 is used for non-return processing to ensure the stability of the pressing limit. After the fitting is completed, the medical staff connects the extraction combination tube 207 and the combination extraction tube 215 through the internal threaded sleeve 213 and the external threaded sleeve 214 to achieve the liquid extraction connection, open the two non-return limiting valves 235, and the medical staff injects physiological saline into the storage fixed barrel 209 through the external discharge injection tube 212, thereby completing all the preparations before liquid extraction;

[0066] Start the negative pressure pump 205, and extract the air inside the separation drainage bucket 1 through the negative pressure pump 205 and the extraction fixed tube 206. At this time, the internal air pressure is detected by the air pressure detector 236. At the same time, because of the isolation of the sealing porous plate 203, the air pressure at the bottom of the separation drainage bucket 1 is greater than the air pressure at the top. The bottom air pressure pushes the pressing processing frame 227 to move upward along the supporting fixed block 225. At this time, the pressing spring 226 is compressed, and the pressing processing frame 227 is separated from the sealing clamping ring 224. The bottom air is extracted upward, so that a low-pressure environment is formed at the bottom, and the negative pressure environment reaches -8 When the pressure is between 0 mmHg and -125 mmHg, the negative pressure pump 205 stops working. When the air pressure at the bottom and top of the separation and drainage barrel 1 is the same, the pressing spring 226 pushes the pressing treatment frame 227 to re-engage with the sealing clamping ring 224. At this time, the negative pressure environment in the separation and drainage barrel 1 will absorb the air at the positions of the extraction combination tube 207, the combined extraction tube 215, the sponge fitting pad 216 and the sealing fitting pad 217. While extracting, the liquid in the wound flows along the combined extraction tube 215 and the extraction combination tube 207 into the bottom end of the separation and drainage barrel 1, realizing the negative pressure drainage treatment of the wound;

[0067] When the air at the positions of the sponge fitting pad 216 and the sealing fitting pad 217 is extracted, the external air pressure will push the sponge fitting pad 216 and the sealing fitting pad 217 to fit more closely to the skin because the external air pressure is greater than the internal air pressure. At the same time, the external air pressure flows along the pressing linkage tube 302 to the position of the sealing fitting pad 217, pushing the alignment matching frame 306 to fit along the matching porous block 304 to the side end of the pressing sealing ring 303. At this time, the matching spring 305 is stretched, the laser sensor 307 and the laser feedback device 308 are fitted, and the laser sensor 307, the laser feedback device 308 and the buzzer alarm are powered by the button battery 310. The alarm 311 is powered to detect the air pressure at the wound position. When the negative pressure environment changes greatly and the negative pressure extraction cannot be stabilized, the internal and external air pressure difference becomes smaller, and the spring 305 drives the alignment frame 306 to reset. At this time, the laser sensor 307 and the laser feedback device 308 are separated, and the data is transmitted to the external controller according to the changed distance. When the distance exceeds the warning distance, the external controller starts the buzzer alarm 311, so as to remind the medical staff and the accompanying staff to observe the connection point, so as to avoid the situation that the wound liquid cannot be effectively drained due to the change of the negative pressure environment, so that the liquid accumulates and pollutes the wound;

[0068] When the wound needs to be continuously cleaned, the medical staff removes the sealing cover 314 from the side end of the external threaded tube 313, connects the external threaded tube 313 to the threaded joint of the infusion tube, and drips the liquid required for disinfection to the wound through the infusion tube, the external threaded tube 313 and the porous injection tube 312, so that the wound can be drained and disinfected at the same time, without the need for the medical staff to repeatedly remove the sealing pad 217 and the sponge pad 216, thereby reducing the complexity of the operation and reducing the occurrence of bacteria contacting and infecting the wound;

[0069] During drainage, after the pipeline has been used for a period of time, it is easy for factors such as blood coagulation and granular impurities clogging the pipeline to cause pipeline drainage interruption or reduced drainage speed. At this time, the cleaning pump 211 and the external discharge injection tube 212 extract the saline solution in the storage fixed barrel 209, and the saline solution flows along the external discharge injection tube 212 and the porous flushing tube rack 208 to flush the extraction combination tube 207, thereby ensuring the smoothness of the liquid extraction and facilitating long-term work. When a certain amount of liquid needs to be retained, the porous sealing sleeve 230 is pulled, and the sealing spring 229 is compressed, opening the external discharge operation tube 228 to discharge the liquid in the separation drainage barrel 1, thereby realizing the operation of continuous drainage and extraction.

[0070] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A closed negative pressure drainage device for wound surface, comprising a separation drainage bucket (1), characterized in that: The separation and drainage barrel (1) is provided with a combined drainage component (2); The combined drainage component (2) comprises a linked closing cover (201); The top of the separation and drainage barrel (1) is connected to a linkage closing cover (201) via a thread, the top of the linkage closing cover (201) is rotatably connected to a porous support plate (202), a sealing porous plate (203) is fixedly clamped in the middle of the inner side of the separation and drainage barrel (1), the sealing porous plate (203) and the top of the porous support plate (202) are both connected to an inner hole threaded column (204) via a thread, and the other side of the top of the porous support plate (202) is equipped with a negative electrode via a motor seat. A negative pressure pump (205), one end of the negative pressure pump (205) is connected to an extraction fixed pipe (206) via an adapter, the side ends of the two inner hole threaded columns (204) are penetrated and connected to an extraction combination pipe (207), the side end of the extraction combination pipe (207) is penetrated and sleeved with a porous flushing pipe rack (208), the top of the sealing porous plate (203) is fixedly installed with a storage fixed barrel (209), and the top of the storage fixed barrel (209) is penetrated and connected to an injection operation pipe (210); A cleaning pump (211) is installed at the top of the sealed porous plate (203) near the storage fixed barrel (209) through a motor seat, and an external discharge injection pipe (212) is connected through one end of the storage fixed barrel (209), and one end of the extraction combination pipe (207) and the porous flushing pipe rack (208) are both rotatably connected to an internal threaded sleeve (213), and the side end of the internal threaded sleeve (213) is threadedly connected to an external threaded sleeve (214), and one end of one of the external threaded sleeves (214) is rotatably connected to a combined extraction pipe (215); One end of the combined extraction tube (215) is connected through a sponge fitting pad (216), a sealing fitting pad (217) is fixed to the top of the sponge fitting pad (216), a flexible adhesive plate (218) is fixed to the bottom of the sealing fitting pad (217) and the sponge fitting pad (216), a pressing airbag (219) is fixed to the top of the sealing fitting pad (217), a sealing airbag (220) is fixed to one end of the inner side of the linkage closing cover (201), one end of the pressing airbag (219) and the sealing airbag (220) are connected through a threaded air injection tube (221), and a valve core (222) is fixed to the inner side of the threaded air injection tube (221).

2. A closed negative pressure drainage device for wounds according to claim 1, characterized in that: An external processing tube (223) is connected through one side of the top of the sealing porous plate (203), a sealing clamping ring (224) is fixed to the inner bottom end of the external processing tube (223), a supporting fixing block (225) is fixed to one end of the inner side of the external processing tube (223), a pressing spring (226) is installed at the bottom end of the supporting fixing block (225), a pressing processing frame (227) is installed at the bottom end of the pressing spring (226), an external operation tube (228) is connected through the middle of the bottom end of the separation drainage barrel (1), a plurality of sealing springs (229) are fixed at equal distances to the side end of the external operation tube (228), and a plurality of sealing springs (229) are fixed to one end of a plurality of porous sealing sleeves (230); A plurality of porous positioning blocks (231) are equidistantly mounted on the bottom of the side end of the separation and drainage barrel (1); a support operating frame (237) is passed through the top of the plurality of porous positioning blocks (231); a connection support box (232) is symmetrically mounted on the side end of the separation and drainage barrel (1); a positioning spring (233) is mounted on one end of the inner side of the connection support box (232); a positioning plug-in frame (234) is mounted on one end of the positioning spring (233); a check valve (235) is embedded and mounted on one end of the injection operation tube (210) and the combined extraction tube (215); and a pressure detector (236) is mounted on the top of the sealing porous plate (203) and the porous support plate (202).

3. A closed negative pressure drainage device for wounds according to claim 1, characterized in that: The cross-section of the top end of the inner hole threaded column (204) is a regular hexagon, the extraction fixed tube (206) is installed through the top end of the porous support plate (202), and the bottom of the side end of the extraction combination tube (207) is placed inside the separation drainage barrel (1).

4. A closed negative pressure drainage device for wounds according to claim 2, characterized in that: The side end of the sealing airbag (220) is fitted with the top inner side of the separation drainage barrel (1), the bottom end of the pressing and processing frame (227) is sleeved and connected with the side end of the sealing clamping ring (224), and the pressing and processing frame (227) slides through the bottom end of the supporting fixed block (225).

5. A closed negative pressure drainage device for wounds according to claim 1, characterized in that: One end of the external injection pipe (212) is rotatably connected to one end of the external threaded sleeve (214), and one end of the cleaning pump (211) is connected to one end of the external injection pipe (212) via an adapter.

6. A closed negative pressure drainage device for wounds according to claim 2, characterized in that: The alignment and insertion frame (234) is slidably clamped on the side end of the supporting and operating frame (237), and the longitudinal section of the alignment and insertion frame (234) is F-shaped.

7. A closed negative pressure drainage device for wounds according to claim 2, characterized in that: The side end of the porous sealing sleeve (230) is slidably fitted with the side end of the external discharge operation pipe (228); the extraction fixed pipe (206), the extraction combined pipe (207), the porous flushing pipe rack (208), the injection operation pipe (210) and the external discharge injection pipe (212) are all soft pipes; The input ends of the negative pressure pump (205), the cleaning pump (211), the check valve (235) and the air pressure detector (236) are all electrically connected to the output end of the external controller; The output terminal of the external controller is electrically connected to the input terminal of the external power supply.

8. A closed negative pressure drainage device for wounds according to claim 7, characterized in that: A protective component (3) is provided at the bottom end of the sealing pad (217); The protection component (3) comprises a hard fixing sleeve (301); A hard fixing sleeve (301) is fixed equidistantly to the bottom end of the sealing pad (217), a pressing linkage tube (302) is sleeved on the inner side of the hard fixing sleeve (301), a pressing sealing ring (303) is fixed to one end of the inner side of the pressing linkage tube (302), a matching porous block (304) is fixed to one end of the inner side of the pressing linkage tube (302) away from the pressing sealing ring (303), a matching spring (305) is fixed to one end of the matching porous block (304), an aligning matching frame (306) is installed at one end of the matching spring (305), a laser sensor (307) is installed at one end of the aligning matching frame (306), and a laser feedback device (308) is fixed to one end of the matching porous block (304); An installation integration sleeve (309) is fixed to the middle of the inner side of the press-fit linkage tube (302), a plurality of button batteries (310) are equidistantly installed inside the installation integration sleeve (309), a buzzer alarm (311) is fixed to one end of the installation integration sleeve (309), a porous injection tube (312) is sleeved on the inner side of the sponge fitting pad (216), and an externally threaded tube (313) is connected to the side end of the porous injection tube (312) via an adapter, and a sealing treatment cover (314) is sleeved on one end of the injection operation tube (210), the threaded gas injection tube (221), the press-fit linkage tube (302) and the externally threaded tube (313).

9. A closed negative pressure drainage device for wounds according to claim 8, characterized in that: One end of the alignment matching frame (306) is sleeved with one end of the press-fit sealing ring (303), and the alignment matching frame (306) is installed through the side end of the matching porous block (304).

10. A closed negative pressure drainage device for wounds according to claim 8, characterized in that: The pressed linkage tube (302), the porous injection tube (312) and the externally threaded tube (313) are all hard tubes; The input ends of the laser sensor (307), the laser feedback device (308) and the buzzer alarm (311) are all electrically connected to the output end of the button battery (310), the signal output ends of the laser sensor (307) and the laser feedback device (308) are all electrically connected to the signal input end of the external controller, and the signal input end of the buzzer alarm (311) is electrically connected to the signal output end of the external controller.

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