Negative pressure wound debridement and healing device for burns and plastic surgery

Abstract

The present invention discloses a burn plastic surgery negative pressure wound debridement and healing promotion device, characterized in that it comprises a patch, a double-shaped connection component and a negative pressure suction unit, the negative pressure suction unit comprises a base, a hollow column, a rotary drive mechanism and a negative pressure machine, a mounting cavity is arranged in the base, a plurality of tracheal joints are arranged longitudinally on the base, the hollow column is vertically mounted on the base, a plurality of negative pressure holes connected to the interior are evenly spaced along the circumferential direction on the hollow column, the negative pressure holes correspond to the tracheal joints one by one, and the negative pressure holes on the hollow column are connected in sequence with the corresponding inner ports of each tracheal joint in a clockwise direction; the present invention aims to promote blood circulation and healing of burn plastic surgery wounds through dynamic negative pressure technology, reduce infection risks, improve treatment effects and patient comfort, and at the same time realize repeatable disassembly and assembly of the patch.

Description

Technical Field

[0001] The invention belongs to the technical field of burn negative pressure wound debridement, and in particular relates to a burn plastic surgery negative pressure wound debridement and healing promotion device. Background Art

[0002] Negative pressure wound debridement technology for burns and plastic surgery is a method that uses negative pressure to attract and promote wound healing. By applying appropriate negative pressure on the wound surface, wound secretions can be removed, blood circulation can be promoted, tissue edema can be reduced, and wound healing can be accelerated. This technology has been widely used in the treatment of burns, trauma and chronic wounds.

[0003] Existing burn plastic surgery negative pressure wound debridement and healing device usually includes a negative pressure suction unit and a dressing. The negative pressure suction unit is connected to the dressing through a pipeline, and the dressing is directly covered on the wound. The dressing is generally made of porous materials, which can maintain a negative pressure environment and allow liquid to be discharged. In order to fix the dressing, it is usually adhered to the skin with tape or medical glue; although the existing burn plastic surgery negative pressure wound debridement and healing device has achieved certain clinical results, it still has some significant shortcomings; first, the existing fixation method mainly relies on tape or medical glue, which may not only cause skin damage, but also increase the patient's discomfort, especially when used for a long time; second, during the suction process, the entire dressing coverage is synchronously negatively pressurized, lacking dynamic changes, affecting the speed and quality of wound healing; and the existing device is difficult to be personalized according to the specific situation of the wound, and cannot meet the needs of different patients, limiting the flexibility and effect of treatment. Therefore, it is particularly important to develop a new device that can overcome these shortcomings. Summary of the invention

[0004] In view of the defects and problems existing in the existing burn and plastic surgery negative pressure wound debridement and healing promotion device, the present invention provides a burn and plastic surgery negative pressure wound debridement and healing promotion device, which is designed to promote blood circulation and healing of burn and plastic surgery wounds through dynamic negative pressure technology, reduce the risk of infection, improve treatment effects and patient comfort, and at the same time achieve repeatable disassembly and assembly of the dressing.

[0005] The solution adopted by the present invention to solve its technical problems is: a burn plastic surgery negative pressure wound debridement and healing promotion device, including an applicator, a double-shaped connecting component and a negative pressure suction unit, the negative pressure suction unit including a base, a hollow column, a rotary drive mechanism and a negative pressure machine, the base is provided with an installation cavity, a plurality of tracheal joints are arranged longitudinally on the base, the hollow column is vertically installed on the base, a plurality of negative pressure holes connected to the interior are evenly spaced along the circumferential direction on the hollow column, the negative pressure holes correspond to the tracheal joints one by one, and the negative pressure holes on the hollow column are connected with the corresponding inner ports of each tracheal joint in sequence along the clockwise direction; a drive seat is rotatably installed on the base in the hollow column, and the drive seat is transmission-connected to the rotary drive mechanism; a A core column with a negative pressure chamber is provided therein, the core column is coaxially mounted on a driving seat, and the negative pressure chamber in the core column is connected with the suction end of the negative pressure machine through the driving seat; a through hole matching the negative pressure hole is radially provided on the core column, and when the through hole overlaps with the negative pressure hole, the negative pressure hole is connected with the suction end of the negative pressure machine; the patch comprises a patch body with a plurality of rows of groove groups arranged longitudinally on the bottom surface, and the groove group is composed of a plurality of negative pressure grooves arranged transversely; a connecting pipe is transversely provided on the upper end surface of the patch body above each row of groove groups, and the connecting pipe connects the negative pressure grooves in the same groove group below together; the patch can be fixed on the wound through a double-shaped connecting component, and all the connecting pipes on the patch in a fixed state can be connected in sequence with the corresponding external ports of each trachea joint on the base through the double-shaped connecting component.

[0006] The upper end surface of the dressing body is crisscrossed with cutting guide grooves, which are all located between adjacent negative pressure grooves, and a reference guide line is matched on the connecting tube located at the longitudinal cutting guide groove, so that the dressing can be cut according to the wound size.

[0007] An axial hole connected to the internal mounting cavity of the base is vertically provided on the base in the hollow column, and a fixed shaft is vertically installed on the bottom surface of the driving seat coaxially. The fixed shaft is rotatably installed in the axial hole through a bearing, and extends downward into the mounting cavity to be connected to the rotating drive mechanism; a negative pressure channel connected to the negative pressure cavity inside the core column is axially upward inside the fixed shaft, and a rotating joint is matched and installed on the fixed shaft below the driven sprocket, and the stator port of the rotating joint is connected to the negative pressure channel inside the fixed shaft, and a negative pressure tube is matched and installed on the rotor port of the rotating joint, and the other end of the negative pressure tube is connected to the suction end of the negative pressure machine.

[0008] The rotary drive mechanism includes a motor, a driven sprocket, a driving sprocket and a transmission chain. The motor is fixedly installed in a mounting cavity on one side of a fixed shaft, the driving sprocket is matched and installed on the motor shaft of the motor, the driven sprocket is fixedly sleeved on the fixed shaft in the mounting cavity, and the driven sprocket is connected to the driving sprocket through a transmission chain.

[0009] The bottom of the core column is provided with an opening, and is vertically matched and inserted into the driving seat. The driving seat blocks the opening at the bottom of the core column, and the core column can be lifted and lowered along the driving seat and the inner annular surface of the hollow cylinder. A pull rod is vertically installed at the top of the core column, and the core column is extended upward from the top of the pull rod, and a handle rod is installed. A limiting mechanism for constraining the height of the core column is matched and installed on the central cylinder. A first functional hole group and a second functional hole group are arranged from top to bottom on the core column above the through hole. The first functional hole group and the second functional hole group both include a plurality of through holes a arranged at intervals along the circumferential direction, and the outer openings of the through holes a are blocked and blocked by the inner annular surface of the hollow column; the number of through holes a in the first functional hole group is greater than the number of through holes a in the second functional hole group; the angle between the central axes of two adjacent through holes a in each functional hole group is the same as the angle between the central axes of two adjacent negative pressure holes on the hollow column.

[0010] The inner ring surface of the core column below the through hole is evenly spaced along the circumferential direction with a plurality of driving grooves, the driving grooves penetrate the core column downward, and the driving seat is evenly spaced along the circumferential direction with a plurality of strip-shaped protrusions matching the driving grooves. When the core column is vertically matched and inserted into the driving seat, the strip-shaped protrusions are matched and inserted into the corresponding driving grooves to block and seal the driving grooves.

[0011] The limiting mechanism includes a plug plate and a spring sheet. Four plug holes are arranged at intervals along the circumferential direction on the hollow column above the negative pressure hole. A plug plate is matched and installed in each plug hole. An arc chamfer is arranged at the inward end of the plug plate. The tail end of the plug plate extends outward from the hollow column and is installed with a C-shaped spring sheet. The other end of the C-shaped spring sheet is fixed on the hollow column above the plug hole. Three annular limiting grooves are evenly spaced vertically on the outer ring surface of the core column above the first functional hole group of the plug plate. The positions of the three annular limiting grooves correspond to the first functional hole group, the second functional hole group and the perforation position respectively, and the shape of the annular limiting grooves matches the arc chamfer of the plug plate.

[0012] The double-shaped connection component includes an annular wrapping connection component and a flat-laying connection component. The patch can be wrapped and fixed on the limbs through the annular wrapping connection component, and in the wrapped state, all the connecting tubes on the patch are connected in sequence with the corresponding external ports of each trachea connector on the base through the annular wrapping connection component; the patch can be laid flat and fixed through the flat-laying connection piece, and in the flat state, all the connecting tubes on the patch are connected in sequence with the corresponding external ports of each trachea connector on the base through the annular wrapping connection component.

[0013] Beneficial effects of the present invention: The present invention provides a burn plastic surgery negative pressure wound debridement and healing promotion device, which combines negative pressure technology and mechanical rotation technology. Through dynamic negative pressure suction, it can effectively promote blood circulation in the wound area, help remove metabolic waste and inflammatory mediators in the wound, and accelerate the wound healing process. When the negative pressure machine is working, it will draw air in each slot group on the dressing in turn to form negative pressure, so that the negative pressure area enters a negative pressure state, promoting blood circulation in the wound. In this process, since the negative pressure area enters the negative pressure state in turn, it can play a dynamic massage role of pushing the blood as the slot groups enter the negative pressure state in turn. Compared with the existing burn plastic surgery negative pressure wound debridement and healing promotion device that uses tape or medical glue for fixing, the dressing in this device can be repeatedly plugged in and out and disassembled in the middle of the treatment process according to the treatment situation through a ring-wrapped connection component, which is convenient for medical staff to operate and for patient care. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the application structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the bottom surface structure of the patch of the present invention.

[0016] Figure 3 It is a schematic diagram of the structure of the negative pressure suction unit of the present invention.

[0017] Figure 4 It is a schematic diagram of the annular box structure of the present invention.

[0018] Figure 5 It is a schematic diagram of the core column structure of the present invention.

[0019] Figure 6 It is a schematic diagram of the installation position of the core column of the present invention.

[0020] Figure 7 It is a schematic diagram of the structure of the pressure regulating piston of the present invention.

[0021] Figure 8 This is one of the schematic diagrams of the application state of the present invention.

[0022] Fig. 9 This is the second schematic diagram of the application state of the present invention.

[0023] The reference numerals in the figure are as follows: 11 is the dressing body, 12 is the negative pressure groove, 13 is the connecting pipe, 14 is the branch pipe, 15 is the cutting guide groove, 16 is the cutting guide line, 2 is the base, 21 is the shaft hole, 22 is the bearing, 23 is the vertical plate, 24 is the trachea joint, 3 is the hollow column, 31 is the negative pressure hole, 32 is the driving seat, 321 is the fixed shaft, 322 is the strip-shaped protrusion, 33 is the core column, 331 is the through hole, 332 is the first functional hole group, 333 is the second functional hole group, 334 is the through hole Hole a, 335 is a pull rod, 336 is a handle rod, 337 is an annular limit groove, 34 is a plug plate, 35 is a C-shaped spring clip, 36 is a jack, 41 is a motor, 42 is a transmission chain, 5 is a rotary joint, 51 is a negative pressure tube, 6 is a three-way straight plug joint, 71 is a sealing head, 72 is a straight quick connector, 73 is a connecting ring, 81 is a cylinder body, 82 is an adjusting piston, 83 is a threaded push rod, 84 is a screw rod, 85 is a compression spring, 9 is an annular box body, and 91 is a sub-chamber. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Example

[0025] This embodiment provides a burn plastic surgery negative pressure wound debridement and healing device, such as Figure 1-6 As shown, it includes an applicator, a double-shaped connection component and a negative pressure suction unit. The negative pressure suction unit includes a base 2, a hollow column 3, a rotary drive mechanism and a negative pressure machine. An installation cavity is provided in the base 2. A plurality of trachea connectors 24 are arranged longitudinally on the base 2. The trachea connector 24 is an existing straight-through trachea connector 24. Both ends of the trachea connector 24 are quick-plug connectors. The hollow column 3 is vertically installed on the base 2. The interior of the hollow column 3 is hollow and cylindrical. A connecting flange is welded to the bottom of the hollow column 3. The connecting flange is fixed to the upper end surface of the base 2 by bolts.

[0026] A plurality of negative pressure holes 31 connected to the interior are evenly spaced along the circumferential direction on the hollow column 3, and the negative pressure holes 31 correspond to the trachea connectors 24 one by one, and the negative pressure holes 31 on the hollow column 3 are connected with the inner ports of the corresponding trachea connectors 24 in sequence in the clockwise direction, that is, the negative pressure holes 31 on the hollow column 3 are numbered in the clockwise direction, and the trachea connectors 24 on the base 2 are numbered in the longitudinal direction, the No. 1 negative pressure hole 31 is connected with the inner port of the No. 1 trachea connector 24, the No. 2 negative pressure hole 31 is connected with the inner port of the No. 2 trachea connector 24, the No. 3 negative pressure hole 31 is connected with the inner port of the No. 3 trachea connector 24... and so on.

[0027] A driving seat 32 is coaxially mounted on the base 2 in the hollow column 3, and the driving seat 32 is transmission-connected with the rotary driving mechanism. Specifically:

[0028] like Figure 5As shown, the upper side of the base 2 in the hollow column 3 is vertically provided with an axial hole 21 connected to the internal mounting cavity of the base 2. The axial hole 21 is coaxially arranged with the hollow column 3. A fixed shaft 321 is coaxially and vertically installed on the bottom surface of the driving seat 32. The fixed shaft 321 is rotatably installed in the axial hole 21 through a bearing 22, and extends downward into the mounting cavity to be transmission-connected with the rotary drive mechanism. The rotary drive mechanism includes a motor 41, a driven sprocket, a driving sprocket and a transmission chain 42. The motor 41 is fixedly installed in the mounting cavity on one side of the fixed shaft 321. The driving sprocket is matched and installed on the motor 41 rotating shaft of the motor 41. The driven sprocket is fixedly sleeved on the fixed shaft 321 in the mounting cavity. The driven sprocket is transmission-connected with the driving sprocket through the transmission chain 42.

[0029] A controller connected to the motor 41 is matched on the outer end surface of the base 2, and the controller is connected to a power source. The opening and closing and clicking operation parameters of the motor 41 can be controlled by the controller.

[0030] A core column 33 with a negative pressure chamber is rotatably installed in the hollow column 3 above the driving seat 32. The outer annular surface of the core column 33 blocks and blocks the inner opening of the negative pressure hole 31. The core column 33 is coaxially installed on the driving seat 32. When the driving seat 32 rotates, the core column 33 will be driven to rotate synchronously with the seat. The negative pressure chamber in the core column 33 is connected to the suction end of the negative pressure machine through the driving seat 32. Specifically:

[0031] A negative pressure channel connected to the negative pressure chamber inside the core column 33 is axially upwardly provided inside the fixed shaft 321, and a rotating joint 5 is matched and installed on the fixed shaft 321 below the driven sprocket. The stator port of the rotating joint 5 is connected to the negative pressure channel inside the fixed shaft 321, and the rotor port of the rotating joint 5 is matched and installed with a negative pressure tube 51. The other end of the negative pressure tube 51 is connected to the suction end of the negative pressure machine. When the negative pressure mechanism is working, the air in the negative pressure chamber can be extracted through the negative pressure tube 51, the rotating joint 5 and the negative pressure channel to generate negative pressure, and under the action of the rotating joint 5, when the driving seat 32 rotates, the suction end of the negative pressure machine can still be stably connected to the negative pressure chamber; a through hole 331 matching the negative pressure hole 31 is radially provided on the core column 33, and when the core column 33 rotates, the through hole 331 on the core column 33 will overlap and connect with the negative pressure hole 31 on the hollow column 3 in sequence along the rotation direction.

[0032] The patch includes a patch body 11 with a plurality of rows of groove groups arranged longitudinally on the bottom surface. The patch body 11 can be made of a variety of materials. For example, the patch body 11 used in this embodiment is made of transparent medical silicone injection molding, has a certain degree of softness and can be bent, and the transparent silicone patch can facilitate observation of the wound condition. The groove group is composed of a plurality of negative pressure grooves 12 arranged in a transverse direction. A connecting pipe 13 is arranged in a transverse direction on the upper end surface of the patch body 11 above each row of groove groups. The connecting pipe 13 connects the negative pressure grooves 12 in the same groove group below. There are a variety of ways in which the negative pressure grooves 12 are connected to the connecting pipe 13. For example, a plurality of branch pipes 14 connected to the connecting pipe 13 are evenly spaced along the setting direction of the connecting pipe 13. The number and position of the branch pipes 14 correspond one-to-one to the number and position of the negative pressure grooves 12 in the groove group below the connecting pipe 13. The branch pipes 14 are fixedly installed on the top of the patch body 11 above the middle of the corresponding negative pressure groove 12 and are connected to the negative pressure groove 12 below.

[0033] The dressing can be fixed on the wound through the double-shaped connection component, and in the fixed state, all the connecting tubes 13 on the dressing can be connected in sequence with the external ports of the corresponding tracheal joints 24 on the base 2 through the double-shaped connection component, and the double-shaped connection component includes an annular wrapping connection component and a flat connection component. The dressing can be wrapped and fixed on the limbs through the annular wrapping connection component, and in the wrapped state, all the connecting tubes 13 on the dressing can be connected in sequence with the external ports of the corresponding tracheal joints 24 on the base 2 through the annular wrapping connection component; the dressing can be laid flat and fixed through the flat connection piece, and in the flat state, all the connecting tubes 13 on the dressing can be connected in sequence with the external ports of the corresponding tracheal joints 24 on the base 2 through the annular wrapping connection component, specifically:

[0034] like Figure 8As shown, the annular wrapping connection component includes a plurality of Y-shaped three-way straight plug connectors 6. The three-way straight plug connectors 6 are made of various materials. The three-way straight plug connectors 6 in this embodiment are made of hard silicone material, and their plugs have a certain bending ability, so that the plugs can be bent at a certain angle around the root of the plugs, so as to fix the wrapping that can adapt to different sizes of patches; the number of three-way connectors is the same as the number of connecting tubes 13 on the patch, and the size of the two top end plugs of the three-way straight plug connector 6 matches the size of the connecting tube 13, and can be respectively matched and inserted into the two ends of the connecting tube 13 to connect the two ends of the connecting tube 13 together, and the tail end plug of the three-way straight plug connector 6 is connected to the outer port of the corresponding trachea connector 24 through the connecting tube. When in use, when the wound is located on the limbs and distributed along the circumferential direction, according to the size of the wound and the limbs, A dressing of suitable size is cut and applied to the wound to wrap the limb. In the wrapped state, both ends of each connecting tube on the dressing are connected together by a three-way straight plug connector 6, and the connecting tubes 13 are connected together by the three-way straight plug connector 6 to form an annular wrap on the limb. The dressing is fixed on the limb so that the bottom surface of the dressing faces inward and fits the skin of the limb to cover the wound. The wound area is divided into multiple negative pressure zones by the groove group, and then the negative pressure machine and the rotary drive mechanism are started. The rotary drive mechanism will drive the drive seat 32 to drive the core column 33 to rotate synchronously. When the core column 33 rotates, the through hole 331 on the core column 33 will overlap and connect with the negative pressure hole 31 on the hollow column 3 in sequence along the rotation direction, so that when the negative pressure machine is working, the air in each groove group on the dressing will be drawn in sequence to form negative pressure, so that the negative pressure area enters a negative pressure state.

[0035] like Fig. 9As shown, the flat connection assembly includes multiple groups of connectors, the number of which is the same as the number of connecting tubes 13 on the application, and the connectors include a plugging head 71, a straight quick connector 72 and a connecting belt. The inner end of the plugging head 71 and the inner end of the straight quick connector 72 are both quick-connect terminals, and the inner end of the plugging head 71 and the inner end of the straight quick connector 72 are respectively matched and installed on the two ends of the connecting tube 13, and the other end of the straight quick connector 72 is connected to the outer port of the corresponding trachea connector 24 through the trachea; the quick-connect terminal is an existing hose quick connector that matches the size of the connecting tube 13, mainly including a connector mouth for inserting the hose, a sealing gasket for sealing, and a threaded locking ring for locking the hose and the connector mouth together; the plugging head 71 and the straight quick connector 72 are both matched with a connecting ring 73, and the two connecting rings 73 are connected together by a connecting belt. There are many types of connecting belts. The connecting belt of this embodiment adopts an elastic belt. When in use, when the wound is located on the limbs or on the trunk along the direction of the force line When applying, cut a dressing of appropriate size according to the size of the wound and limbs, then install the sealing head 71 and the straight quick connector 72 in each group of connecting parts on the corresponding connecting pipe 13, apply the dressing on the wound, and then use the connecting belt in each group of connecting parts to wrap around the limbs or torso to tie the sealing head 71 and the straight quick connector 72 together, so that the bottom surface of the dressing fits the skin of the limb to cover the wound, and the wound area is divided into multiple negative pressure areas through the groove group on the dressing, and then the other end of the straight quick connector 72 in each group of connecting parts is connected to the external port of the corresponding trachea connector 24 through the trachea, and then the negative pressure machine and the rotary drive mechanism are started. The rotary drive mechanism will drive the drive seat 32 to drive the core column 33 to rotate synchronously. When the core column 33 rotates, the through hole 331 on the core column 33 will overlap and connect with the negative pressure hole 31 on the hollow column 3 in the direction of rotation. Therefore, when the negative pressure machine is working, the air in each groove group on the dressing will be drawn in turn to form negative pressure, so that the negative pressure area enters a negative pressure state.

[0036] When the burn plastic surgery negative pressure wound debridement and healing device provided in this embodiment is used, the dressing is cut to a suitable size according to the size of the wound, and then fixed on the wound through a double-shaped connecting component to cover the wound and the normal skin at the edge of the wound; all the connecting tubes 13 on the dressing are connected to the corresponding external ports of each trachea connector 24 on the base 2 in sequence through the double-shaped connecting component, and then the negative pressure machine and the rotary drive mechanism are started. The rotary drive mechanism will drive the drive seat 32 to drive the core column 33 to rotate synchronously. When the core column 33 rotates, the through hole 331 on the core column 33 will be connected to the negative pressure hole 331 on the hollow column 3 in sequence along the rotation direction. 31 overlap and are connected, so that when the negative pressure machine is working, the air in each groove group on the dressing will be extracted in turn to form negative pressure, so that the negative pressure area enters a negative pressure state, thereby promoting the blood circulation of the wound. In this process, since the negative pressure area enters the negative pressure state in turn, the groove groups enter the negative pressure state in turn, which can play a dynamic massage role in pushing the blood. Compared with the existing burn plastic surgery negative pressure wound debridement and healing promotion device that uses tape or medical glue for fixing, the dressing in this device can be repeatedly plugged in and out and disassembled during the treatment process according to the treatment situation through the ring-wrapped connection component, which is convenient for medical staff to operate and patients to care. Example

[0037] The difference between Example 2 and Example 1 is that a pressure relief hole matching the negative pressure hole 31 is radially provided on the core column 33 at the same height as the through hole 331, and the pressure relief hole and the through hole 331 are spaced apart in the circumferential direction, and the inner hollow opening of the pressure relief control is matched and connected with a pressure relief pipe, and the other end of the pressure relief pipe extends upward through the inner top wall of the core column and extends out of the core column; an open hole connected to the interior is provided on the top of the hollow column 3, and a shielding cover is matched and installed on the top of the open hole to seal the open hole. There are many types of shielding covers. For example, in the present embodiment, the shielding cover includes a threaded hollow column fixedly installed on the top of the hollow column 3, and the open hole is located inside the threaded hollow column. A column cap is threadedly connected to the top of the threaded hollow column, and the open hole is opened when the column cap is screwed to separate the threaded hollow column; when the open hole is opened in use, the pressure relief hole will overlap and be connected with the negative pressure hole 31 on the hollow column 3 in sequence as the core column 33 rotates, and the rotation of the core column is utilized to relieve the pressure of the slot group that has been pumped to a negative pressure state before the through hole rotates one circle to be connected with the negative pressure hole. Example

[0038] The difference between Example 3 and Example 2 is that Figure 5 and Figure 6As shown, a first functional hole group 332 and a second functional hole group 333 are arranged on the core column 33 above the through hole 331 from top to bottom, and the first functional hole group 332 and the second functional hole group 333 both include a plurality of through holes a334 arranged at intervals along the circumferential direction, and the outer openings of the through holes a334 are blocked and blocked by the inner annular surface of the hollow column 3; the number of through holes a334 in the first functional hole group 332 is greater than the number of through holes a334 in the second functional hole group 333; in this embodiment, the number of through holes a334 in the first functional hole group 332 is 3, and the number of through holes a334 in the second functional hole group 333 is 2; the angle between the central axes of two adjacent through holes a334 in each functional hole group The number is the same as the angle between the central axes of two adjacent negative pressure holes 31 on the hollow column 3; an opening is provided at the bottom of the core column 33, and is vertically matched and inserted into the driving seat 32, and the driving seat 32 blocks the opening at the bottom of the core column 33, and the core column 33 can be lifted and lowered along the driving seat 32 and the inner annular surface of the hollow cylinder, and a pull rod 335 is vertically installed at the top of the core column 33, and the top of the pull rod 335 extends upward from the core column 33, and a handle rod 336 is installed. A limiting mechanism for constraining the height of the core column 33 is matched and installed on the central cylinder. The height of the core column 33 is adjusted by the handle rod 336 to select the corresponding functional hole group or the single through hole 331 to enter the enclosed area of ​​the negative pressure hole 31, so as to adjust the suction mode of the negative pressure application.

[0039] The inner ring surface of the core column 33 below the through hole 331 is provided with a plurality of driving grooves evenly spaced along the circumferential direction, and the driving grooves penetrate the core column 33 downwardly. The driving seat 32 is provided with a plurality of strip protrusions 322 matching the driving grooves evenly spaced along the circumferential direction. When the core column 33 is vertically matched and inserted into the driving seat 32, the strip protrusions 322 are matched and inserted into the corresponding driving grooves to block the driving grooves. When the driving seat 32 rotates, the driving seat 32 will drive the core column 33 to rotate through the cooperation between the strip protrusions 322 and the driving grooves.

[0040] The limiting mechanism includes a plug plate 34 and a spring sheet. Four plug holes 36 are arranged at intervals along the circumferential direction on the hollow column 3 above the negative pressure hole 31. A plug plate 34 is matched and installed in each plug hole 36. The tail end of the plug plate 34 extends outward from the hollow column 3 and is installed with a C-shaped spring sheet 35. The other end of the C-shaped spring sheet 35 is fixed on the hollow column 3 above the plug hole 36, and the C-shaped spring sheet 35 will push the plug plate 34 inward to contact the outer ring surface of the core column 33 in a natural state; an arc chamfer is arranged on the inward end of the plug plate 34, and three annular limiting grooves 337 are evenly spaced vertically on the outer ring surface of the core column 33 above the first functional hole group 332 of the plug plate 34, and the positions of the three annular limiting grooves 337 are respectively aligned with the positions of the first functional hole group 33 2. The second functional hole group 333 and the perforation position correspond to each other. When any annular limiting groove 337 overlaps with the insertion hole 36, the hole group or perforation corresponding to the annular limiting groove 337 enters the enclosed area of ​​the negative pressure hole 31; the shape of the annular limiting groove 337 matches the arc chamfer of the plug plate 34. When the annular limiting groove 337 overlaps with the insertion hole 36, the C-shaped spring piece 35 will push the inner end of the plug plate 34 inward and insert it into the annular limiting groove 337 of the same height, clamping the core column 33 to lock its height without affecting the rotation function of the core column 33. When the core column 33 is pushed and pulled by the handle rod 336, the groove wall of the annular limiting groove 337 will squeeze the inner end of the plug plate 34 out of the annular limiting groove 337, thereby unlocking the core column 33.

[0041] During use, when the wound is getting longer, the height of the core column 33 is adjusted by the handle bar 336, and the first function hole group 332 or the second function hole group 333 is selected according to the needs to enter the enclosed area of ​​the negative pressure hole 31 of the hollow column 3. In this embodiment, the first function hole group 332 is controlled to enter the enclosed area of ​​the negative pressure hole 31 of the hollow column 3. Since the angle between the central axes of the two adjacent through holes a334 in each function hole group is the same as the angle between the central axes of the two adjacent negative pressure holes 31 on the hollow column 3, after starting the negative pressure machine and the rotation drive mechanism, during the rotation of the core column 33, the three through holes a334 in the first function hole group 332 will be connected to the corresponding three negative pressure holes 31 on the hollow column 3 at the same time, so that when the negative pressure machine is working, the air in each slot group on the patch is extracted in turn to form a negative pressure, so that when the negative pressure area enters a negative pressure state, the negative pressure machine will extract the air in the three slot groups each time, thereby expanding the area formed by a single suction negative pressure and improving the treatment efficiency. Example

[0042] The difference between Example 4 and Example 3 is that Figure 6 and Figure 7As shown, vertical plates 23 are symmetrically arranged at the left and right ends of the upper end surface of the base 2, and the air pipe joints 24 are arranged longitudinally and installed on the vertical plates 23. The hollow column 3 is vertically installed on the base 2 between the two vertical plates 23. A pressure regulator is provided between each negative pressure hole 31 and the corresponding air pipe joint 24. The pressure regulator includes a cylinder 81 whose bottom end is connected to the negative pressure hole 31 and the inner end of the air pipe joint 24. There are many ways for the cylinder 81 to be connected to the negative pressure hole 31 and the inner end of the air pipe joint 24, such as: a hollow column 3 is vertically installed on the base 2 between the two vertical plates 23, and a pressure regulator is provided between each negative pressure hole 31 and the corresponding air pipe joint 24. An annular box body 9 is fixedly installed on the outer side of the column 3, and a plurality of partitions are evenly spaced along the circumferential direction in the annular cavity of the annular box body 9. The partitions seal and divide the annular cavity of the annular box body 9 into a plurality of sub-chambers 91 evenly along the circumferential direction. The sub-chambers 91 correspond one-to-one to the negative pressure holes 31. The inner port of the air pipe joint 24 and the negative pressure holes 31 are both connected to the corresponding sub-chambers 91. The cylinder body 81 of the pressure regulator is vertically installed on the annular box body 9 above the corresponding sub-chamber 91, and is connected to the sub-chamber 91 below.

[0043] A pressure regulating piston is installed in the cylinder body 81 along the vertical sliding direction, and a compression spring 85 is installed in the cylinder body 81 above the pressure regulating piston. The two ends of the compression spring 85 are fixedly connected to the pressure regulating piston and the top wall of the cylinder body 81 respectively. A threaded hole is provided on the top of the cylinder body 81 that is connected to the inside of the cylinder body 81. A threaded push rod 83 is installed in the threaded hole. One end of the threaded push rod 83 contacts the pressure regulating piston, and the other end extends out of the cylinder body 81 and is installed with a screw rod 84. By driving the threaded push rod 83 to rotate by screwing the push rod 84, the size of the threaded push rod 83 extending into the cylinder body 81 can be controlled, thereby pushing the piston to control the stretching amount of the compression spring 85. The bottom end of 1 is connected with the negative pressure hole 31 and the inner end of the trachea joint 24. During negative pressure suction, the air in the cylinder body 81 on the lower side of the pressure regulating piston will be sucked synchronously to generate negative pressure, thereby driving the pressure regulating piston to move downward to stretch the compression spring 85. Therefore, when in use, the initial stretching length of the compression spring 85 is adjusted by screwing the threaded push rod 83 to push the pressure regulating piston. The conclusion drawn by Hooke's law is that when the spring is stretched, in order to continue to stretch it, a greater force needs to be applied, thereby controlling the moving distance of the pressure regulating piston in each pressure regulator under the same suction pressure of the negative pressure machine, achieving the purpose of adjusting the negative pressure size by zone, so that the pressure of each negative pressure zone matches the wound state at that location. Example

[0044] The difference between Example 5 and Example 4 is that Figure 1 As shown, the upper end surface of the dressing body 11 is crisscrossed with cutting guide grooves 15, and the cutting guide grooves 15 are all located between adjacent negative pressure grooves 12, and reference guide lines are matched on the connecting tubes 13 located in the longitudinal cutting guide grooves 15, so that the dressing can be cut according to the wound size.

[0045] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A burn plastic surgery negative pressure wound debridement and healing device, characterized in that: It includes an applicator, a double-shaped connection component and a negative pressure suction unit, the negative pressure suction unit includes a base, a hollow column, a rotating drive mechanism and a negative pressure machine, the base is provided with an installation cavity, a plurality of tracheal joints are arranged longitudinally on the base, the hollow column is vertically installed on the base, a plurality of negative pressure holes connected to the interior are evenly spaced along the circumferential direction on the hollow column, the negative pressure holes correspond to the tracheal joints one by one, and the negative pressure holes on the hollow column are connected with the corresponding inner ports of each tracheal joint in sequence along the clockwise direction; a driving seat is rotatably installed on the base in the hollow column, and the driving seat is transmission-connected to the rotating drive mechanism; a core column with a built-in negative pressure cavity is rotatably installed in the hollow column above the driving seat, and the core column is coaxially installed On the driving seat, the negative pressure chamber in the core column is connected with the suction end of the negative pressure machine through the driving seat; a through hole matching the negative pressure hole is radially provided on the core column, and when the through hole overlaps with the negative pressure hole, the negative pressure hole is connected with the suction end of the negative pressure machine; the dressing includes a dressing body with a plurality of rows of groove groups arranged longitudinally on the bottom surface, and the groove group is composed of a plurality of negative pressure grooves arranged transversely; a connecting pipe is transversely provided on the upper end surface of the dressing body above each row of groove groups, and the connecting pipe connects the negative pressure grooves in the same groove group below together; the dressing can be fixed on the wound through a double-shaped connecting component, and all the connecting pipes on the dressing in a fixed state can be connected in sequence with the corresponding external ports of each trachea joint on the base through the double-shaped connecting component.

2. The burn and plastic surgery negative pressure wound debridement and healing device according to claim 1, characterized in that: The upper end surface of the dressing body is crisscrossed with cutting guide grooves, which are all located between adjacent negative pressure grooves, and a reference guide line is matched on the connecting tube located at the longitudinal cutting guide groove, so that the dressing can be cut according to the wound size.

3. The burn and plastic surgery negative pressure wound debridement and healing device according to claim 1, characterized in that: An axial hole connected to the internal mounting cavity of the base is vertically provided on the base in the hollow column, and a fixed shaft is vertically installed on the bottom surface of the driving seat coaxially. The fixed shaft is rotatably installed in the axial hole through a bearing, and extends downward into the mounting cavity to be connected to the rotating drive mechanism; a negative pressure channel connected to the negative pressure cavity inside the core column is axially upward inside the fixed shaft, and a rotating joint is matched and installed on the fixed shaft below the driven sprocket, and the stator port of the rotating joint is connected to the negative pressure channel inside the fixed shaft, and a negative pressure tube is matched and installed on the rotor port of the rotating joint, and the other end of the negative pressure tube is connected to the suction end of the negative pressure machine.

4. The burn and plastic surgery negative pressure wound debridement and healing device according to claim 3, characterized in that: The rotary drive mechanism includes a motor, a driven sprocket, a driving sprocket and a transmission chain. The motor is fixedly installed in a mounting cavity on one side of a fixed shaft, the driving sprocket is matched and installed on the motor shaft of the motor, the driven sprocket is fixedly sleeved on the fixed shaft in the mounting cavity, and the driven sprocket is connected to the driving sprocket through a transmission chain.

5. The burn and plastic surgery negative pressure wound debridement and healing device according to claim 3, characterized in that: The bottom of the core column is provided with an opening, and is vertically matched and inserted into the driving seat. The driving seat blocks the opening at the bottom of the core column, and the core column can be lifted and lowered along the driving seat and the inner ring surface of the hollow column. A pull rod is vertically installed at the top of the core column, and the core column is extended upward from the top of the pull rod, and a handle rod is installed. A limiting mechanism for constraining the height of the core column is matched and installed on the hollow column. A first functional hole group and a second functional hole group are arranged from top to bottom on the core column above the through hole. The first functional hole group and the second functional hole group both include a plurality of through holes a arranged at intervals along the circumferential direction, and the outer openings of the through holes a are blocked and blocked by the inner ring surface of the hollow column; the number of through holes a in the first functional hole group is greater than the number of through holes a in the second functional hole group; the angle between the central axes of two adjacent through holes a in each functional hole group is the same as the angle between the central axes of two adjacent negative pressure holes on the hollow column.

6. The burn and plastic surgery negative pressure wound debridement and healing device according to claim 5, characterized in that: The inner ring surface of the core column below the through hole is evenly spaced along the circumferential direction with a plurality of driving grooves, the driving grooves penetrate the core column downward, and the driving seat is evenly spaced along the circumferential direction with a plurality of strip protrusions matching the driving grooves. When the core column is vertically matched and inserted into the driving seat, the strip protrusions are matched and inserted into the corresponding driving grooves to block and seal the driving grooves.

7. The burn and plastic surgery negative pressure wound debridement and healing promoting device according to claim 5, characterized in that: The limiting mechanism includes a plug plate and a spring sheet. Four plug holes are arranged at intervals along the circumferential direction on the hollow column above the negative pressure hole. A plug plate is matched and installed in each plug hole. An arc chamfer is arranged on the inward end of the plug plate. The tail end of the plug plate extends outward from the hollow column and is installed with a C-shaped spring sheet. The other end of the C-shaped spring sheet is fixed on the hollow column above the plug hole. Three annular limiting grooves are evenly spaced vertically on the outer ring surface of the core column above the first functional hole group. The positions of the three annular limiting grooves correspond to the positions of the first functional hole group, the second functional hole group and the through hole respectively, and the shape of the annular limiting grooves matches the arc chamfer of the plug plate.

8. The burn and plastic surgery negative pressure wound debridement and healing device according to claim 1, characterized in that: The double-shaped connection component includes an annular wrapping connection component and a flat-laying connection component. The patch can be wrapped and fixed on the limbs through the annular wrapping connection component, and in the wrapped state, all the connecting tubes on the patch are connected in sequence with the corresponding external ports of each trachea connector on the base through the annular wrapping connection component; the patch can be laid flat and fixed through the flat-laying connection piece, and in the flat-laying state, all the connecting tubes on the patch are connected in sequence with the corresponding external ports of each trachea connector on the base through the flat-laying connection component.

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