Exudate absorption equipment for burn wound nursing

Abstract

The invention relates to the technical field of medical equipment, in particular to exudate absorption equipment for burn wound nursing, which comprises a shell, the shell is divided into an upper cavity and a lower cavity, a replaceable sponge mat is arranged in the lower cavity, an adsorption part is further arranged in the lower cavity, and the adsorption part is connected with a reciprocating assembly in the upper cavity; the reciprocating assembly acts to drive the adsorption part to reciprocate in the length direction of the shell, so that the exudate adsorbed by the sponge cushion is sucked; an extrusion structure is arranged on the adsorption part and comprises extrusion parts arranged on the two sides of the adsorption part, the extrusion parts are connected with positioning parts on the adsorption part through positioning assemblies, under the cooperation of the positioning assemblies, only one set of extrusion parts make contact with the sponge mat, and when the adsorption part moves to the end of the stroke, the extrusion parts are matched with a trigger part arranged in the upper cavity, and therefore the sponge mat can be triggered. And the states of the two sets of extrusion pieces can be switched, so that only the extrusion piece located at the front end of the moving direction makes contact with the sponge cushion in the moving process of the adsorption piece.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to an exudate absorption device for burn wound care. Background Art

[0002] Burns are a common injury that damages the integrity of the skin, destroys the barrier function, increases the permeability of skin tissue capillaries, causes a decrease in body fluids, water-electrolyte acid-base imbalance, and blood concentration, leading to shock due to insufficient blood volume. Large areas of burn wounds lose their skin barrier function, and wound contamination, necrosis, and exudation are conducive to the growth of pathogens; in addition, the body's resistance is significantly reduced, so the wound is prone to infection and can develop into burn sepsis.

[0003] In traditional treatment, the wound surface needs to be changed several times after debridement, which cannot effectively stimulate the growth of granulation tissue, nor can it remove secretions and necrotic tissue in time. Frequent dressing changes increase the probability of infection. Negative pressure closed drainage is a highly efficient drainage method. When used, a polyethylene alcohol hydrated seaweed salt foam dressing containing a drainage tube is used to cover or fill the wound surface with skin and soft tissue defects, and then it is sealed with a biological semipermeable membrane to make it a closed space. Finally, the drainage tube is connected to a negative pressure source, and the exudate, pus and detached necrotic tissue in the drainage area are drained out of the body through controllable negative pressure, fully keeping the wound surface clean.

[0004] However, when using negative pressure drainage equipment to absorb exudate from burn wounds, the drainage tube acts directly on the dressing to perform large-area adsorption and drainage on the wound. During this process, the position of the drainage tube remains unchanged, and it continues to act on the same burn wound for a long time, which can easily cause bleeding in the wound, thereby increasing the risk of wound infection. In addition, when absorbing large amounts or viscous exudate, the drainage tube is drawn out at a slow speed. Summary of the invention

[0005] The purpose of the present invention is to provide an exudate absorption device for burn wound care to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An exudate absorption device for burn wound care, comprising: a shell, the shell being divided into an upper chamber and a lower chamber, a replaceable sponge pad being arranged in the lower chamber, and an adsorbent being also arranged in the lower chamber, the adsorbent being connected to a reciprocating assembly arranged in the upper chamber, and when the reciprocating assembly is actuated, the adsorbent can be driven to reciprocate along the length direction of the shell, thereby sucking the exudate adsorbed by the sponge pad;

[0008] The adsorbent is provided with an extrusion structure, which includes extrusion pieces arranged on both sides of the adsorbent, and the extrusion pieces are connected to the positioning pieces on the adsorbent through a positioning assembly. With the cooperation of the positioning assembly, only one group of the extrusion pieces in the lower chamber is in contact with the sponge pad. When the adsorbent moves to the end of the stroke, the extrusion pieces cooperate with the trigger piece arranged in the upper chamber to switch the states of the two groups of the extrusion pieces, so that during the movement of the adsorbent, only the extrusion pieces at the front end of the running direction are in contact with the sponge pad.

[0009] The exudate absorption device for burn wound care as described above: the absorption member comprises an air suction hood, which is slidably disposed in the lower chamber and connected to an air suction device disposed outside the housing through a pump air pipe;

[0010] It also includes a mounting frame fixedly arranged on the suction hood, wherein two groups of mounting frames are symmetrically arranged along the length direction of the suction hood, and the two groups of mounting frames are slidably arranged in the upper chamber at one end away from the suction hood.

[0011] The exudate absorption device for burn wound care as described above: the reciprocating assembly includes a threaded sleeve, the threaded sleeve is fixedly connected to one group of the mounting frames, and the threaded sleeve is threadedly connected to a screw rotating in the upper chamber, and the screw is coaxially fixed to the output shaft of a servo motor fixedly mounted on the housing.

[0012] The exudate absorption device for burn wound care as described above: the extrusion member includes a rotating shaft, the rotating shaft is rotatably mounted on the suction hood, two groups of the rotating shafts are connected by belts, and an extrusion roller is rotatably mounted on the rotating shaft.

[0013] The exudate absorption device for burn wound care as described above: the positioning component includes a plug-in cylinder, and the plug-in cylinder is provided in two groups. The two groups of the plug-in cylinders are respectively fixedly connected to the two ends of the rotating shaft, and a spring is slidably arranged in each group of the plug-in cylinders, one end of the spring abuts against the bottom of the plug-in cylinder, and the other end of the spring abuts against a moving part slidably arranged in the plug-in cylinder.

[0014] The exudate absorption device for burn wound care as described above: the movable part includes a plug-in rod, one end of which is inserted into the plug-in tube, and the other end of the plug-in rod is rotatably mounted with a roller. When the rotating shaft rotates, the roller cooperates with the positioning part and the spring to fix the position state of the rotating shaft.

[0015] The exudate absorption device for burn wound care as described above: the positioning member includes a trigger block fixedly arranged on the suction hood, and the trigger blocks are symmetrically arranged in two groups along the width and length directions of the suction hood respectively, and each group of the trigger blocks is provided with an interlocking groove body on the side facing the suction hood, and the interlocking groove body includes a first locking groove, a first curved surface, a second curved surface and a second locking groove, and the first locking groove and the first curved surface are symmetrically arranged with the second curved surface and the second locking groove.

[0016] The exudate absorption device for burn wound care as described above: the trigger member includes a wedge block, the wedge block is fixedly arranged in the upper chamber, and two groups of wedge blocks are provided, each group of wedge blocks is provided with a trigger surface, and in the process of the suction hood driving the rotating shaft to move, the trigger surface cooperates with the driving member provided on the rotating shaft to drive the rotating shaft to rotate, thereby switching the extrusion state of the two groups of extrusion rollers.

[0017] The exudate absorption device for burn wound care as described above: the driving member includes a trigger rod fixedly arranged on the rotating shaft, and one end of the trigger rod away from the rotating shaft is inserted into the upper chamber.

[0018] The exudate absorption device for burn wound care as described above: the shell is also provided with a fixing structure, which can fix the shell to the patient's burn site, including a restraining belt fixedly provided on the shell, and the restraining belt is provided in at least two groups equidistantly along the length direction of the shell.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] By providing a shell, the sponge pad is detachably provided in the shell, and the shell and the sponge pad can be easily connected and disassembled with the patient's burn wound through the binding belt on the shell. At the same time, the reciprocating assembly provided in the shell is used to drive the suction hood above the sponge pad to reciprocate along the length direction of the shell, which can effectively improve the absorption efficiency of wound exudate, thereby shortening the debridement time and achieving the purpose of rapid debridement. In addition, during the reciprocating movement of the suction hood, it can be avoided that the suction hood sucks the same position for a long time, thereby causing bleeding of the wound.

[0021] At the same time, by arranging squeezing rollers on the left and right sides of the suction hood, the relative position between the squeezing rollers and the suction hood can be kept fixed by using the cooperation between the positioning assembly and the positioning member, and only one of the two groups of squeezing rollers is in contact with the sponge pad. When the suction hood moves, squeezing the sponge pad by the squeezing rollers can improve the instantaneous absorption rate of the sponge, so that the amount of exudate in the sponge pad increases instantaneously. At this time, the movement of the suction hood can increase the speed of absorbing the exudate, and the suction hood will not cause damage to the wound skin when absorbing the exudate.

[0022] When the suction hood moves to the end of the stroke, the trigger member in the shell cooperates with the trigger rod on the rotating shaft to drive the rotating shaft to rotate. When the rotating shaft rotates, due to the cooperation between the positioning assembly and the positioning member, the rotating shaft can drive the two groups of squeezing rollers to switch states, so that during the movement of the suction hood, only the squeezing roller at the front end of the suction hood keeps in contact with the sponge pad, avoiding the reverse osmosis caused by the exudate adsorbed on the rear sponge pad not being sucked out, thereby reducing the risk of wound infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the structure of the exudate absorption device for burn wound care.

[0024] Figure 2 Schematic cross-section of the housing of an exudate absorption device for burn wound care.

[0025] Figure 3 Schematic diagram of the structure in the upper chamber of the exudate absorption device for burn wound care.

[0026] Figure 4 A schematic diagram of the structure of the connection between the adsorbent, the extrusion structure and the positioning component in the exudate absorption device for burn wound care.

[0027] Figure 5 A schematic diagram of the structure of the connection between the reciprocating component and the adsorption component in the exudate absorption device for burn wound care.

[0028] Figure 6 Schematic diagram of the structure of the trigger component in the exudate absorption device for burn wound care.

[0029] Figure 7 A schematic diagram of the structure of the positioning components in the exudate absorption device for burn wound care.

[0030] Figure 8 This is a schematic diagram of the structure of the connection between the extrusion structure and the adsorption component in the exudate absorption device for burn wound care.

[0031] Fig. 9This is a schematic diagram of the structure of the connection between the extrusion structure and the positioning member in the exudate absorption device for burn wound care.

[0032] Fig.10 Schematic diagram of the structure of the positioning components in the exudate absorption device for burn wound care.

[0033] In the figure: 1, shell; 101, lower chamber; 102, upper chamber; 103, through groove; 2, restraint belt; 3, pump air pipe; 4, sponge pad; 5, suction hood; 6, screw rod; 7, pressure roller; 8, trigger block; 801, first locking groove; 802, first arc surface; 803, second arc surface; 804, second locking groove; 9, wedge block; 901, trigger surface; 10, threaded sleeve; 11, mounting bracket; 12, rotating shaft; 13, trigger rod; 14, belt; 15, plug-in cylinder; 16, spring; 17, plug-in rod; 18, roller. DETAILED DESCRIPTION

[0034] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0035] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0036] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0037] See also Figure 1-Figure 10 In an embodiment of the present invention, a device for absorbing exudate for burn wound care comprises:

[0038] A housing 1, wherein the housing 1 is divided into an upper chamber 102 and a lower chamber 101, wherein a replaceable sponge pad 4 is disposed in the lower chamber 101, and an adsorbent is also disposed in the lower chamber 101, wherein the adsorbent is connected to a reciprocating assembly disposed in the upper chamber 102, and when the reciprocating assembly is actuated, the adsorbent can be driven to reciprocate along the length direction of the housing 1, thereby sucking exudate adsorbed by the sponge pad 4;

[0039] Preferably, the sponge pad 4 can be made of gelatin sponge, which is light, soft and porous, has good physical adsorption properties, and can quickly absorb blood and other body fluids to achieve the effect of hemostasis. At the same time, the gelatin component in the gelatin sponge can effectively absorb the liquid in the wound and can also absorb the exudate from the burn wound. By absorbing the exudate from the burn wound, it can keep the wound dry and clean, prevent infection, and promote wound healing.

[0040] The shell 1 is also provided with a fixing structure, which can fix the shell 1 to the burnt part of the patient, including a restraining belt 2 fixedly provided on the shell 1, and at least two groups of the restraining belts 2 are equidistantly provided along the length direction of the shell 1;

[0041] Preferably, see Figure 1 , Figure 2 , Figure 3 The above-mentioned restraints 2 are symmetrically arranged in two groups along the length direction of the shell 1, and the restraints 2 can be made of elastic bandages. The elastic bandages have good elasticity and ductility, can be applied to different parts, and can fix the shell 1 on the patient's burn part. When the shell 1 is fixed on the patient's burn part, the sponge pad 4 in the lower chamber 101 of the shell 1 can fit with the patient's wound surface, thereby absorbing the exudate from the wound surface, thereby achieving the purpose of cleaning the wound exudate.

[0042] See also Figure 2 , Figure 4 , Figure 5 , Figure 8 , the adsorbent comprises an air suction hood 5, the air suction hood 5 is slidably disposed in the lower chamber 101 and connected to an air suction device disposed outside the housing 1 through a pump air pipe 3;

[0043] In detail, the pump air pipe 3 is placed in the through groove 103 opened on the housing 1. When the reciprocating assembly drives the suction cover 5 to reciprocate along the length direction of the housing 1, the pump air pipe 3 can slide in the through groove 103, so that the suction cover 5 can always maintain a state of communication with the suction device;

[0044] In particular, the suction end face of the suction hood 5 is tightly fitted with the side of the sponge pad 4 facing the upper chamber 102, and the width of the suction hood 5 is the same as the width of the sponge pad 4. Therefore, during the reciprocating movement of the suction hood 5, the suction hood 5 can fully absorb the exudate adsorbed by the sponge pad 4. At the same time, with the fixing function of the restraint belt 2, the sponge pad 4 can continue to maintain contact with the patient's burn wound. With the reciprocating adsorption operation of the suction hood 5, the efficiency of removing the exudate from the wound can be effectively improved.

[0045] The adsorbent also includes a mounting frame 11 fixedly arranged on the air hood 5, and two groups of the mounting frames 11 are symmetrically arranged along the length direction of the air hood 5. The two groups of mounting frames 11 are slidably arranged in the upper chamber 102 at one end away from the air hood 5. Under the restriction of the mounting frames 11, the air hood 5 can only slide along the length direction of the shell 1;

[0046] The reciprocating assembly includes a threaded sleeve 10, which is fixedly connected to one of the mounting brackets 11, and the threaded sleeve 10 is threadedly connected to a screw 6 rotating in the upper chamber 102, and the screw 6 is coaxially fixed to the output shaft of the servo motor fixedly mounted on the housing 1.

[0047] Specifically, in the initial state, the threaded sleeve 10 is located at the stroke end of the screw rod 6 close to one end of the servo motor. At this time, the suction hood 5 is close to the servo motor. After the shell 1 is fixed on the patient's burn wound, the servo motor is started and the output shaft rotates forward. Then, the screw rod 6 can drive the threaded sleeve 10 to drive the mounting frame 11 and the suction hood 5 to slide along the length direction of the shell 1. When the suction hood 5 moves to the stroke end, the servo motor output shaft is reversed, and then the screw rod 6 is forced to drive the suction hood 5 to move in the opposite direction along the length direction of the shell 1. During the sliding process, the suction device outside the shell 1 enters the working state synchronously. Therefore, during the movement of the suction hood 5, the suction hood 5 can absorb the exudate adsorbed by the sponge pad 4. This process can not only keep the wound dry, but also improve the speed of cleaning the exudate and the utilization rate of the sponge pad 4. In addition, during the reciprocating movement and adsorption of the suction hood 5, it can avoid the suction hood 5 adsorbing the same position for a long time, thereby causing bleeding on the wound.

[0048] For further information, see Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Fig. 9 , Fig.10 , the adsorbent is provided with an extrusion structure, the extrusion structure includes extrusions arranged on both sides of the adsorbent, the extrusions are connected with the positioning members on the adsorbent through a positioning assembly, under the cooperation of the positioning assembly, only one group of the extrusions in the lower chamber 101 is in contact with the sponge pad 4, when the adsorbent moves to the end of the stroke, the extrusions cooperate with the trigger member arranged in the upper chamber 102, and the states of the two groups of the extrusions can be switched, so that during the movement of the adsorbent, only the extrusion at the front end of the running direction is in contact with the sponge pad 4;

[0049] The extrusion member includes a rotating shaft 12, which is rotatably mounted on the suction hood 5, two groups of the rotating shafts 12 are connected by a belt 14, and an extrusion roller 7 is rotatably mounted on the rotating shaft 12;

[0050] In particular, the squeezing rollers 7 mounted on the two sets of rotating shafts 12 are Figure 4 When the suction hood 5 is in motion, the squeezing roller 7 can keep in contact with the sponge pad 4, and the squeezing roller 7 can roll on the surface of the sponge pad 4. At this time, the sponge pad 4, which was originally in the collapsed state, can be reset due to its own elasticity. During the reset process, the sponge pad 4 absorbs more exudate than the sponge pad 4 in the normal state. Combined with the movement of the suction hood 5, after the sponge pad 4 is reset, the suction hood 5 can timely suck the exudate absorbed by the sponge pad 4, so as to avoid the back-seepage of the exudate. At the same time, with the cooperation of the suction hood 5 and the sponge pad 4, the cleaning efficiency of the exudate can be effectively improved, and the medical time of medical staff and patients can be shortened.

[0051] For details, please refer to Figure 4 , Figure 6 , Figure 7 , Fig. 9 , Fig.10 The positioning assembly includes an inserting tube 15, and the inserting tube 15 is provided with two groups. The two groups of the inserting tubes 15 are respectively fixedly connected to the two ends of the rotating shaft 12, and a spring 16 is slidably provided in each group of the inserting tubes 15, one end of the spring 16 abuts against the bottom of the inserting tube 15, and the other end of the spring 16 abuts against the moving part slidably provided in the inserting tube 15;

[0052] The moving member includes a plug rod 17, one end of which is inserted into the plug tube 15, and the other end of the plug rod 17 is rotatably mounted with a roller 18. When the rotating shaft 12 rotates, the roller 18 cooperates with the positioning member and the spring 16 to fix the position of the rotating shaft 12.

[0053] Preferably, the spring 16 is always in a compressed state. The spring 16 in the compressed state makes the plug-in rod 17 tend to move away from the rotating shaft 12, so that the roller 18 can cooperate with the positioning member, thereby locking the position state of the rotating shaft 12, so that during the movement of the suction hood 5, the squeezing roller 7 at the front end of the suction hood 5 can be normally in a squeezing state on the sponge pad 4.

[0054] See also Figure 4 , the positioning member includes a trigger block 8 fixedly arranged on the air hood 5, and the trigger block 8 is symmetrically arranged in two groups along the width and length directions of the air hood 5, and each group of the trigger blocks 8 is provided with a fitting groove on one side facing the air hood 5, and the fitting groove includes a first locking groove 801, a first curved surface 802, a second curved surface 803 and a second locking groove 804, and the first locking groove 801 and the first curved surface 802 are symmetrically arranged with the second curved surface 803 and the second locking groove 804;

[0055] For details, please refer to Figure 7 , Fig. 9 In the initial state, the two sets of rollers 18 are both engaged with the first locking groove 801. At this time, the squeezing roller 7 on the left side of the suction hood 5 is in contact with the sponge pad 4, and the squeezing roller 7 on the other side is away from the sponge pad 4 (refer to Figure 8 Description), at this time, under the action of the reserved elastic potential energy of the spring 16, the relative positions of the two groups of squeezing rollers 7 and the suction hood 5 can remain stable, and when the suction hood 5 runs to the end of the stroke, the squeezing rollers 7 at the front end of the suction hood 5 cooperate with the trigger member arranged in the upper chamber 102, which can force the rotating shaft 12 to rotate. In this process, the cooperation between the trigger block 8 and the positioning assembly can ensure that only the squeezing rollers 7 at the front end of the suction hood 5 and the sponge pad 4 are in contact and squeezed, thereby accelerating the speed of absorbing the exudate.

[0056] For details, please refer to Figure 2 , Figure 3 , Figure 6 The trigger member includes a wedge block 9, which is fixedly arranged in the upper chamber 102, and two groups of wedge blocks 9 are provided, and each group of wedge blocks 9 is provided with a trigger surface 901. In the process of the suction hood 5 driving the rotating shaft 12 to move, the trigger surface 901 cooperates with the driving member provided on the rotating shaft 12 to drive the rotating shaft 12 to rotate, thereby switching the extrusion states of the two groups of extrusion rollers 7;

[0057] The driving member includes a trigger rod 13 fixedly disposed on the rotating shaft 12, and one end of the trigger rod 13 away from the rotating shaft 12 is inserted into the upper chamber 102;

[0058] Preferably, see Figure 6 The wedge block 9 is arranged in a "right-angled trapezoid" structure, including a trigger surface 901, which is an inclined surface of the "right-angled trapezoid" structure, and the trigger surfaces 901 of the two sets of wedge blocks 9 are as follows. Figure 3 As shown, they are in a relative state;

[0059] Combined with the above, refer to Figure 2 , Figure 8 When the suction hood 5 is driven by the screw rod 6 to move toward the left side of the shell 1, the squeezing roller 7 on the left side of the suction hood 5 can first squeeze the left side of the sponge pad 4, and when the suction hood 5 is about to move to the left end, the trigger rod 13 on the left rotating shaft 12 can first contact the trigger surface 901 of the left wedge block 9, and then, with the continued movement of the suction hood 5, the squeezing of the trigger surface 901 on the trigger rod 13 can force the trigger rod 13 rotating shaft 12 to rotate clockwise. At the same time, under the connection action of the belt 14, the two sets of rotating shafts 12 rotate simultaneously, and the roller 18 combined with the first locking groove 801 is separated from the first locking groove 801, and then slides along the first arc surface 802. During the sliding process, the squeezing of the roller 18 by the first arc surface 802 can force the plug-in rod 17 further squeezes the spring 16, thereby forcing the elastic potential energy stored in the spring 16 to increase, until the suction hood 5 moves to the end of the stroke, and the roller 18 passes over the symmetry axis of the first curved surface 802 and the second curved surface 803. At this time, the spring 16 releases the elastic potential energy, which can force the roller 18 to automatically and quickly slide along the second curved surface 803 until the roller 18 is combined with the second locking groove 804, and the position of the rotating shaft 12 is fixed. At this time, the squeezing roller 7 on the left side of the suction hood 5 is separated from the sponge pad 4, while the squeezing roller 7 on the right side is in contact with the sponge pad 4. Then, the suction hood 5 is driven by the screw 6 to move toward the right side of the shell 1. The squeezing roller 7 on the right side can squeeze the sponge pad 4, so that the suction hood 5 can also absorb the exudate more quickly and efficiently during the process of moving toward the right side.

[0060] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0061] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An exudate absorption device for burn wound care, characterized in that: include: A shell (1), the shell (1) being divided into an upper chamber (102) and a lower chamber (101), a replaceable sponge pad (4) being arranged in the lower chamber (101), and an adsorbent being also arranged in the lower chamber (101), the adsorbent being connected to a reciprocating assembly arranged in the upper chamber (102), and when the reciprocating assembly is in motion, it can drive the adsorbent to reciprocate along the length direction of the shell (1), thereby sucking exudate adsorbed by the sponge pad (4); The adsorbent is provided with an extrusion structure, the extrusion structure comprising extrusions arranged on both sides of the adsorbent, the extrusions being connected to positioning members on the adsorbent via positioning components, with the cooperation of the positioning components, only one group of the extrusions in the lower chamber (101) is in contact with the sponge pad (4), and when the adsorbent moves to the end of the stroke, the extrusions cooperate with a trigger member arranged in the upper chamber (102) to switch the states of the two groups of the extrusions, so that during the movement of the adsorbent, only the extrusions at the front end of the running direction are in contact with the sponge pad (4).

2. The exudate absorption device for burn wound care according to claim 1, characterized in that: The adsorbent comprises an air suction hood (5), the air suction hood (5) being slidably disposed in the lower chamber (101) and connected to an air suction device disposed outside the housing (1) via a pump air pipe (3); It also comprises a mounting frame (11) fixedly arranged on the air suction hood (5), wherein two groups of the mounting frames (11) are symmetrically arranged along the length direction of the air suction hood (5), and the two groups of the mounting frames (11) are slidably arranged in the upper chamber (102) at one end away from the air suction hood (5).

3. The exudate absorption device for burn wound care according to claim 2, characterized in that: The reciprocating assembly comprises a threaded sleeve (10), the threaded sleeve (10) being fixedly connected to one of the mounting frames (11), and the threaded sleeve (10) being threadedly connected to a screw (6) rotating in the upper chamber (102), and the screw (6) being coaxially fixed to an output shaft of a servo motor fixedly mounted on the housing (1).

4. The exudate absorption device for burn wound care according to claim 2, characterized in that: The extrusion member comprises a rotating shaft (12), the rotating shaft (12) is rotatably mounted on the suction hood (5), two groups of the rotating shafts (12) are connected via a belt (14), and an extrusion roller (7) is rotatably mounted on the rotating shaft (12).

5. The exudate absorption device for burn wound care according to claim 4, characterized in that: The positioning assembly comprises an inserting tube (15), wherein the inserting tube (15) is provided in two groups, the two groups of the inserting tube (15) are respectively fixedly connected to the two ends of the rotating shaft (12), and a spring (16) is slidably provided in each group of the inserting tube (15), one end of the spring (16) abuts against the bottom of the inserting tube (15), and the other end of the spring (16) abuts against a moving part slidably provided in the inserting tube (15).

6. The exudate absorption device for burn wound care according to claim 5, characterized in that: The movable member comprises a plug-in rod (17), one end of which is plugged into the plug-in tube (15), and the other end of which is rotatably mounted with a roller (18); when the rotating shaft (12) rotates, the roller (18) cooperates with the positioning member and the spring (16) to fix the position of the rotating shaft (12).

7. The exudate absorption device for burn wound care according to claim 6, characterized in that: The positioning member comprises a trigger block (8) fixedly arranged on the air suction hood (5), and two groups of the trigger blocks (8) are symmetrically arranged along the width and length directions of the air suction hood (5), and each group of the trigger blocks (8) is provided with an embedded groove body on the side facing the air suction hood (5), and the embedded groove body comprises a first locking groove (801), a first curved surface (802), a second curved surface (803) and a second locking groove (804), and the first locking groove (801) and the first curved surface (802) are symmetrically arranged with the second curved surface (803) and the second locking groove (804).

8. The exudate absorption device for burn wound care according to claim 4, characterized in that: The trigger member comprises a wedge block (9), wherein the wedge block (9) is fixedly arranged in the upper chamber (102), and two groups of the wedge blocks (9) are arranged, and each group of the wedge blocks (9) is provided with a trigger surface (901). When the suction hood (5) drives the rotating shaft (12) to move, the trigger surface (901) cooperates with a driving member arranged on the rotating shaft (12) to drive the rotating shaft (12) to rotate, thereby switching the extrusion states of the two groups of extrusion rollers (7).

9. The exudate absorption device for burn wound care according to claim 8, characterized in that: The driving member comprises a trigger rod (13) fixedly arranged on the rotating shaft (12), and one end of the trigger rod (13) away from the rotating shaft (12) is inserted into the upper chamber (102).

10. The exudate absorption device for burn wound care according to claim 2, characterized in that: The shell (1) is also provided with a fixing structure, which is capable of fixing the shell (1) to the patient's burn site, and comprises a restraining belt (2) fixedly arranged on the shell (1), wherein at least two groups of the restraining belts (2) are equidistantly arranged along the length direction of the shell (1).

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