External medicine pressing device for acute radiation skin damage

Abstract

The present invention discloses a device for applying external medicine for acute radiation skin damage, and belongs to the technical field of medical devices. The drug applicator of the present invention comprises an upper cover, a coating body and a lower cover in sequence, and the upper cover and the lower cover are magnetically attracted, and the coating body comprises a piezoelectric cover plate and a coating main board; a micro-supply mechanism is installed at the lower end of the upper cover, and a one-way valve is arranged on the supply pipe of the mechanism, and the lower end of the supply pipe is connected to the drug storage chamber of the coating main board; a plurality of piezoelectric laminated parts are evenly arranged on the piezoelectric cover plate; pressure chambers corresponding to the plurality of piezoelectric laminated parts are arranged on the coating main board, and a plurality of conical coating holes are arranged in the pressure chamber. The present invention adopts an automatic drug application method to achieve rapid and uniform coverage of the irradiation field and the skin in the surrounding area with the drug.

Description

Technical field:

[0001] The invention relates to a medical device, in particular to an external medicine pressing device for acute radiation skin damage. Background technology:

[0002] Radiotherapy plays an increasingly important role in tumor treatment. For example, in comprehensive breast treatment, most breast cancer radical mastectomies or modified radical mastectomies require radiotherapy. With the continuous improvement of radiotherapy technology, the side effects of radiotherapy have been effectively controlled. However, during radiotherapy, while killing tumor cells, the rays will also damage normal tissues, among which acute radiation damage is the most common side effect. The skin is a fast-reacting tissue, so radiation skin damage is difficult to avoid during external irradiation, which manifests as varying degrees of erythema, pigmentation, dry or wet peeling, and edema. In severe cases, ulcers, bleeding, and necrosis may occur. Not only does it cause certain physical and mental damage to the patient, but in severe cases, it will also lead to interruption of radiotherapy and prolong the course of treatment, thereby affecting the efficacy of radiotherapy and increasing the cost burden on patients.

[0003] At present, the effective prevention and treatment method for acute radiation skin damage is to apply special topical drugs on the skin of the irradiation field and the surrounding area. These topical drugs mostly play a dual role of cleaning and drainage through the principle of penetration and capillary action, and improve the microcirculation of damaged tissues. Patients should pay attention to keeping the skin of the radiation field clean and dry. When applying topical drugs, they should be applied evenly and maintained at a thickness of 1 to 2 mm so that the drugs can penetrate deep into the skin. In actual use, they are mostly applied manually, and need to be gently spread with fingers or cotton swabs, and it is easy to appear thick and thin, and the efficacy cannot achieve the desired effect. If the patient applies it himself, because the patient himself has fear and anxiety about the acute radiation skin damage, and the topical drugs must be applied 2 to 3 times a day, this will cause negative emotions in the patient. If applied by medical staff, the heavy workload can be imagined, and the thickness of the drug application cannot be fully guaranteed. In view of this, how to combine patient needs and clinical care, and how to achieve rapid and uniform coverage of the skin of the irradiation field and the surrounding area with topical drugs are the problems that the relevant technical field currently needs to solve. In this way, we can not only achieve high-quality care after radiotherapy, but also reduce patients' anxiety to a certain extent and enhance their confidence in overcoming the disease. Summary of the invention:

[0004] The invention provides an external medicine pressing device for acute radiation skin damage, which adopts an automatic medicine pressing method to achieve rapid and uniform coverage of the medicine on the skin in the irradiation field and the surrounding area, thus solving the problems existing in the prior art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a device for applying external medicine for acute radiation skin damage, comprising a medicine applicator, which comprises an upper cover, a coating body and a lower cover in sequence, the upper cover and the lower cover are magnetically attracted, and the coating body comprises a piezoelectric cover plate and a coating main board; a supply mechanism is installed at the lower end of the upper cover, and the supply mechanism comprises a micro-stepping motor and a supply box, the output end of the micro-stepping motor is connected to one end of the supply box through a spiral mechanism, and a supply pipe is arranged at the other end of the supply box, and a one-way valve is arranged on the supply pipe, and the one-way valve is fixed on the piezoelectric cover plate, and the lower end of the supply pipe is communicated with the drug storage chamber of the coating main board; a plurality of piezoelectric laminated components are evenly arranged on the piezoelectric cover plate; pressure chambers corresponding to the plurality of piezoelectric laminated components are arranged on the coating main board, and a plurality of conical coating holes are arranged in the pressure chambers.

[0006] The above technical solution controls the drug discharge from the pressure-coating hole by means of the piezoelectric laminate of the pressure-coating body, and indirectly controls the opening and closing of the pressure-coating hole. For external-use drugs such as sol-like drugs, the fluidity is good. The pressure chamber and the drug storage chamber on the pressure-coating cover plate and the pressure-coating main plate form multiple chambers for the flow of the drug body. After receiving the driving signal, the piezoelectric laminate will deform, the volume of the chamber will be compressed, the pressure in the chamber will increase, the drug body will be pressed out through the pressure-coating hole, and the drug body pressed out from the small diameter of the pressure-coating hole will enter the state of the chamber open to the outside, and the drug body will flow out quickly; when the driving signal disappears, the piezoelectric laminate will return to its original shape, the volume of the chamber will return to its original size, and the pressure in the chamber will return to its original size; in this process, the micro-stepping motor will drive the spiral mechanism to push the rear end of the supply box to move toward its front end, and the drug body in the supply box will be squeezed out to the one-way valve and then filled into the drug storage chamber, just making up for the volume of the drug body pressed out of the chamber. Since the drug flows from the large end to the small end of the conical pressure-coating hole, and the drug with good fluidity needs to overcome the additional pressure caused by its surface tension when passing through the small end of the pressure-coating hole, it is not easy for the drug to flow out of the pressure-coating hole when the lower cover is removed. When the lower cover and the upper cover are sucked together, the end surface of the lower cover will seal the pressure-coating hole completely, and the drug will not flow out of the pressure-coating hole.

[0007] As one of the preferred solutions of the present invention, the drug storage chamber is opened in the middle part of the pressure coating main board, and multiple pressure chambers are symmetrically arranged on both sides of the pressure coating main board, and the drug storage chamber and the pressure chamber are connected through the flow limiting area. In this arrangement, the channel width of the flow limiting area is smaller than the width of the pressure chamber, and when the drug body enters the pressure chamber from the drug storage chamber through the flow limiting area, the flow direction of the drug body can be guided and the flow speed of the drug body can be increased.

[0008] On the basis of one of the above preferred schemes, as the second preferred scheme of the present invention, the pressure coating body also includes an adjustment plate and a deformation plate located at the bottom of the pressure coating main board; the two sides of the adjustment plate are fork combs, and the comb teeth of the fork comb are provided with adjustment holes, the comb teeth correspond to the pressure chambers one by one, and the adjustment holes correspond to the pressure coating holes one by one; the deformation plate includes a base plate and an elastic layer, the base plate located at the bottom of the adjustment plate is provided with a base hole corresponding to the adjustment hole, and the elastic layer is provided with a drug outlet tube corresponding to the adjustment hole, the lower end of the drug outlet tube slightly protrudes from the lower end surface of the elastic layer, and the outer wall of the upper end of the drug outlet tube fits the inner wall of the adjustment hole and the pressure coating hole. In this setting, the adjustment hole on the adjustment plate serves as a movable channel for the drug outlet tube, guiding and limiting the movement direction of the drug outlet tube, and the fork combs on both sides of the adjustment plate can be implemented correspondingly to the lower part of each pressure chamber; the lower end of the drug outlet tube slightly protrudes from the elastic layer, and the elastic layer can be elastically deformed and can drive the drug outlet tube to move upward, thereby making the distance from the tube mouth of these drug outlet tubes to the skin surface roughly the same.

[0009] Based on the above preferred solution 2, as the preferred solution 3 of the present invention, the elastic layer includes slow-elastic memory foam and an elastic bottom film. In this configuration, the elastic bottom film contacts the skin and exerts a slight pressure on the skin, and the slow-elastic memory foam absorbs the counter pressure of the skin to undergo a slight deformation. When the elastic layer leaves the skin, the deformation of the slow-elastic memory foam can last for several seconds.

[0010] As the fourth preferred scheme of the present invention, the device of the present invention also includes a placement rack, which includes a chassis and an adjustable support rod, the support rod is provided with a support arm and a tray for supporting the support arm, the support arm is fixed with an adjustable arm, the adjustable arm is connected with a four-bar mechanism, the four-bar mechanism includes an upper connecting rod, a lower connecting rod and a triangular plate, the two ends of the upper connecting rod are respectively hinged to the adjustable arm and the triangular plate, the two ends of the lower connecting rod are respectively connected to the adjustable arm and the triangular plate by bolts, an insertion block is also fixed to the triangular plate, a rear end of a U-shaped connecting frame is inserted into the insertion block, a front end of the U-shaped connecting frame is sleeved with the hexagonal shaft on one side of the upper cover, and the other front end of the U-shaped connecting frame is transfer-connected to the circular shaft on one side of the upper cover. In this arrangement, the rod on the U-shaped connecting frame is sleeved with the hexagonal shaft of the upper cover, and the rod itself is also sleeved with the main body of the U-shaped connecting frame using a hexagonal shaft. In this way, the rod can be removed, and then the drug applicator is rotated to make it flip vertically clockwise, the lower cover is rotated to the outside of the U-shaped connecting frame, and the upper cover is rotated to the inside of the U-shaped connecting frame, to increase protection against the outflow of the drug body.

[0011] On the basis of the fourth preferred solution, as the fifth preferred solution of the present invention, a limit rod is fixed on the support arm by bolts, a positioning rod is sleeved on the front end of the limit rod, the positioning rod is installed on the limit rod by fastening bolts, and a friction block is arranged at the front end of the positioning rod. This arrangement can make the friction block at the front end of the positioning rod push the outer side of the drug press applicator by adjusting the limit rod and the fastening bolts, so that the drug press applicator can reliably maintain its working position.

[0012] Based on any of the above schemes, as the sixth preferred scheme of the present invention, the upper cover is equipped with a control panel, a control circuit board and a drive circuit board which are in communication with each other, and the control panel includes a panel body, on which a power button, a start / stop button and a plurality of selection buttons are provided, and one selection button corresponds to one piezoelectric laminate. In this arrangement, the control circuit board and the drive circuit board each have their own single-chip microcomputer and peripheral circuits, and the drug pressure coating operation can be performed through the control panel, and the corresponding piezoelectric laminate can be selected for operation.

[0013] In summary, the beneficial effect of the present invention is to use control and drive circuits to control the actuation of the piezoelectric stack and the start-up of the micro stepping motor to complete the automatic pressure coating and filling of the drug body, thereby achieving rapid and uniform coverage of radiotherapy topical drugs to the skin in the irradiation field and the surrounding area. At the same time, it can effectively save drug application time, reduce the nursing work pressure of medical staff, and allow patients to have a comfortable nursing experience. Description of the drawings:

[0014] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0015] Figure 2 for Figure 1 A magnified view of the local structure at point A.

[0016] Figure 3 Schematic diagram of a non-working state of an embodiment of the present invention.

[0017] Figure 4 Schematic diagram of the structure of the drug applicator according to an embodiment of the present invention.

[0018] Figure 5 It is a schematic structural diagram of a press-coated mainboard according to an embodiment of the present invention.

[0019] Figure 6 Schematic diagram of the structure of the upper cover of an embodiment of the present invention.

[0020] Figure 7 This is a disassembly diagram of the drug applicator according to an embodiment of the present invention.

[0021] In the figure, 1, upper cover, 11, magnetic sheet, 12, hexagonal shaft, 2, press-coated body, 21, piezoelectric cover plate, 211, piezoelectric laminate, 212, one-way valve, 22, press-coated main board, 221, pressure chamber, 222, flow limiting area, 223, drug storage chamber, 224, press-coated hole, 23, adjustment plate, 231, fork comb, 232, adjustment hole, 24, deformation plate, 241, drug outlet pipe, 242, substrate, 243, slow-elastic memory foam, 244, elastic bottom film, 3, lower cover, 31, iron sheet, 41, micro stepping motor, 42, spiral sleeve, 43, spiral Rotary rod, 44, push piece, 45, supply box, 46, supply tube, 51, chassis, 52, support rod, 53, tray, 54, support arm, 55, adjustable arm, 561, upper connecting rod, 562, lower connecting rod, 563, triangle plate, 564, insert block, 565, bolt, 571, limit rod, 572, positioning rod, 573, fastening bolt, 574, friction block, 6, U-shaped connecting frame, 61, rod, 71, control panel, 711, selection key, 712, power key, 713, start and stop key, 72, drive circuit board, 73, control circuit board. Specific implementation method:

[0022] In order to clearly illustrate the technical features of the present solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0023] like Figures 1 to 4 As shown, the external medicine pressure coating device for acute radiation skin damage of this embodiment includes a medicine pressure coating device, which is detachably mounted on a placement rack. The medicine pressure coating device includes an upper cover 1, a pressure coating body 2 and a lower cover 3 from top to bottom. There are protruding ears on both sides of the lower cover 3, and iron sheets 31 are arranged on them for engaging with the magnetic sheets 11 on the protruding ears of the upper cover 1, so that the lower cover 3 is convenient to take and put. The pressure coating body 2 includes a piezoelectric cover plate 2121 and a pressure coating main board 22. As shown in FIG. Figure 6 As shown, a micro-stepping motor 41 and a supply box 45 are installed at the lower end of the upper cover 1 for automatic supply of external medicines, wherein the output end of the micro-stepping motor 41 is connected to one end of the supply box 45 through a spiral mechanism, and a supply tube 46 is provided at the other end of the supply box 45. The spiral mechanism mainly includes a spiral rod 43 and a spiral sleeve 42, one end of the spiral sleeve 42 is fixed on a push piece 44 of the supply box 45, and the push piece 44 can push out the medicine in the supply box 45 under the drive of the spiral sleeve 42. After the medicine in the supply box 45 is used up, the supply box 45 can be taken out from its card slot in the upper cover 1 for replacement or addition of medicine. Figure 7As shown, a one-way valve 212 is provided on the supply pipe 46, and the one-way valve 212 is fixed on the piezoelectric cover plate 21. The lower end of the supply pipe 46 is connected to the drug storage chamber 223 of the pressure coating main board 22. The drug body can only flow from the supply box 45 to the drug storage chamber 223 in one direction and cannot flow back. A plurality of piezoelectric laminated components 211 are evenly arranged on the piezoelectric cover plate 21. The piezoelectric laminated components 211 have a large micro-displacement output force, a small size, and are easy to control. The displacement output can be used to achieve pressure coating of the drug body. Pressure chambers 221 corresponding to the plurality of piezoelectric laminated components 211 are arranged on the pressure coating main board 22, and a plurality of conical pressure coating holes 224 are arranged in the pressure chambers 221. When the lower cover 3 is attracted to the upper cover 1, the end face of the lower cover 3 will seal all the pressure coating holes 224, and the drug body will not flow out of the pressure coating holes 224. When the lower cover 3 is removed, the medicine flows from the large end to the small end of the conical pressure-coating hole 224, and the medicine with good fluidity needs to overcome the additional pressure caused by its surface tension when passing through the small end of the pressure-coating hole 224, so the medicine is not easy to flow out of the pressure-coating hole 224 by itself.

[0024] In order to provide patients with a more comfortable nursing experience when applying medicine, the device of this embodiment also includes a placement rack for installing a medicine applicator. The patient can remain in a lying position and the medicine applicator can be operated by medical staff; or by the patient's family or caregiver. The placement rack includes a chassis 51 and an adjustable support rod 52, the support rod 52 is provided with a support arm 54 and a tray 53 for supporting the support arm 54, the support arm 54 is fixed with an adjustable arm 55, the adjustable arm 55 is connected with a four-rod 61 mechanism, the four-rod 61 mechanism includes an upper connecting rod 561, a lower connecting rod 562 and a triangular plate 563, the two ends of the upper connecting rod 561 are respectively hinged to the adjustable arm 55 and the triangular plate 563, the two ends of the lower connecting rod 562 are respectively connected to the adjustable arm 55 and the triangular plate 563 by bolts 565, an insert block 564 is also fixed to the triangular plate 563, a rear end of a U-shaped connecting frame 6 is inserted into the insert block 564, a front end of the U-shaped connecting frame 6 is sleeved with the hexagonal shaft 12 on one side of the upper cover 1, and the other front end of the U-shaped connecting frame 6 is transfer-connected to the round shaft on one side of the upper cover 1. The rod 61 on the U-shaped connecting frame 6 is sleeved with the hexagonal shaft 12 of the upper cover 1, and the rod 61 itself is also sleeved with the main body of the U-shaped connecting frame 6 using the hexagonal shaft 12. In this way, the rod 61 can be removed, and then the drug applicator is rotated to make it turn vertically clockwise, the lower cover 3 is rotated to the outside of the U-shaped connecting frame 6, and the upper cover 1 is rotated to the inside of the U-shaped connecting frame 6. When the device is not in use, it is increased to prevent the outflow of the drug body.

[0025] like Figure 5 and Figure 7As shown, the drug storage chamber 223 is opened in the middle part of the pressure-coating main board 22, and multiple pressure chambers 221 are symmetrically arranged on both sides of the pressure-coating main board 22. The drug storage chamber 223 and the pressure chamber 221 are connected through the flow limiting area 222. The channel width of the flow limiting area 222 is smaller than the width of the pressure chamber 221. When the drug body enters the pressure chamber 221 from the drug storage chamber 223 through the flow limiting area 222, it can guide the flow direction of the drug body and increase the flow speed of the drug body.

[0026] like Figure 7 As shown, in order to better apply the drug body evenly, the pressure coating body 2 also includes an adjustment plate 23 and a deformation plate 24 located at the bottom of the pressure coating main board 22. Among them, the two sides of the adjustment plate 23 are fork combs 231, and the comb teeth of the fork comb 231 are provided with adjustment holes 232. The comb teeth correspond to the pressure chambers 221 one by one, and the adjustment holes 232 correspond to the pressure coating holes 224 one by one. The deformation plate 24 includes a base plate 242 and an elastic layer. The base plate 242 located at the bottom of the adjustment plate 23 is provided with a base hole corresponding to the adjustment hole 232. The elastic layer is provided with a drug outlet pipe 241 corresponding to the adjustment hole 232. The lower end of the drug outlet pipe 241 slightly extends out of the lower end surface of the elastic layer, and the outer wall of the upper end of the drug outlet pipe 241 fits the inner wall of the adjustment hole 232 and the pressure coating hole 224. The lower end of the drug outlet tube 241 slightly extends out of the elastic layer, and the elastic layer can be elastically deformed and can drive the drug outlet tube 241 to move upward, thereby making the distances from the tube openings of these drug outlet tubes 241 to the skin surface approximately the same. The adjustment holes 232 on the adjustment plate 23 serve as the moving channels of the drug outlet tube 241, guiding and limiting the moving direction of the drug outlet tube 241, and the fork combs 231 on both sides of the adjustment plate 23 can be correspondingly placed at the lower part of each pressure chamber 221.

[0027] The elastic layer includes a slow-elastic memory foam 243 and an elastic bottom film 244. The elastic bottom film 244 may be a silicone film with micropores on the surface. The elastic bottom film 244 contacts the skin and exerts a small pressure on the skin. The slow-elastic memory foam 243 absorbs the counter pressure of the skin and deforms. When the elastic layer leaves the skin, the deformation of the slow-elastic memory foam 243 can last for several seconds. For example, the existing slow-elastic memory foam 243 can maintain the deformation for 3 to 5 seconds before recovering.

[0028] like Figure 2 , Figure 3 As shown, a limit rod 571 is fixed to the support arm 54 by a bolt 565, a positioning rod 572 is sleeved on the front end of the limit rod 571, the positioning rod 572 is installed on the limit rod 571 by a fastening bolt 573, and a friction block 574 is arranged at the front end of the positioning rod 572. With this arrangement, by adjusting the limit rod 571 and the fastening bolt 573, the friction block 574 at the front end of the positioning rod 572 pushes the outer side of the drug press applicator, so that the drug press applicator can reliably maintain its working position.

[0029] like Figure 4As shown, the upper cover 1 is equipped with a control panel 71, a control circuit board 73 and a drive circuit board 72 which are connected to each other. The control panel 71 includes a panel body, on which a power button 712, a start / stop button 713 and a plurality of selection buttons 711 are provided. One selection button 711 corresponds to one piezoelectric laminate 211. Each piezoelectric laminate 211 is numbered in the arrangement order, and the selection button 711 corresponds to the number of the piezoelectric laminate 211. The end surface of the upper cover 1 plate indicates the boundary range of each pressure chamber 221. The control circuit board 73 and the drive circuit board 72 each have their own single-chip microcomputer and peripheral circuit, and the drug pressure coating operation can be performed through the control panel 71. Specifically, the corresponding piezoelectric laminate 211 can be selected to work, while other piezoelectric laminates 211 can not work. The drive circuit board 72 is used to drive the piezoelectric laminate 211 to move, and the control circuit board 73 is used to control the start and stop of the micro stepping motor 41 according to the number of driven piezoelectric laminates 211. In addition, a corresponding remote controller can be configured according to needs, so that patients can use the device independently to treat damaged skin.

[0030] In this embodiment, the piezoelectric laminate 211 of the coating body 2 is used to control the drug discharge from the coating hole 224, and indirectly controls the opening and closing of the coating hole 224 to realize the automatic coating of the drug body, so that the drug body can quickly and evenly cover the skin in the irradiation field and the surrounding area. For example, patients who have acute skin damage after receiving radiotherapy after radical mastectomy or modified radical mastectomy can remain lying on the medical bed. The medical staff presses the power button 712 of the control panel 71, places the drug coating device on the placement rack on the damaged skin, removes the lower cover 3, and makes slight adjustments according to the patient's physical signs. Tighten the bolt 565 on the four-bar 61 mechanism of the placement rack to loosen the bolt 565 slightly, press down or lift up the triangle plate 563 to adjust the drug coating device to a suitable height, and then adjust the fastening bolt 573 to prevent the friction block 574 from contacting the side of the upper cover 1 of the drug coating device. According to the motion characteristics of the parallelogram 61 mechanism, the drug coating device can automatically maintain a horizontal level during the adjustment process. According to the skin range, select the number of the piezoelectric stack 211 that needs to work, press the corresponding selection key 711, and after the elastic bottom film 244 contacts the skin, the slow-elastic memory foam 243 is slightly deformed, and the drug outlet tube 241 is slightly displaced along the adjustment hole 232 and the pressure-coating hole 224. The triangular plate 563 or the U-shaped connecting frame 6 is slightly lifted, and the elastic bottom film 244 leaves the skin. The elastic layer makes the distance between the tube mouth of the drug outlet tube 241 and the skin approximately the same, which is more in line with the contour of the skin to be applied with medicine. Press the start-stop button 713, and the pressure chamber 221 and the drug storage chamber 223 on the pressure-coating cover plate and the pressure-coating main board 22 form a plurality of chambers for the flow of the drug body. The piezoelectric stack 211 receives the drive signal from the drive circuit board 72. The medicine body will flow out quickly; then the driving signal disappears, the piezoelectric stack 211 returns to its original shape, the volume of the chamber returns to its original size, and the pressure in the chamber returns to its original size; in this process, the micro-stepping motor 41 receives the control signal from the control circuit board 73, and the number of working piezoelectric stacks 211 corresponds to the angle that the micro-stepping motor 41 should rotate, that is, the number of selected selection keys 711 corresponds to the angle that the micro-stepping motor 41 should rotate. The micro-stepping motor 41 will drive the screw rod 43 to rotate, and the screw sleeve 42 will move with the screw rod 43. One end of the screw rod 43 will push the push piece 44 of the supply box 45 to move. The medicine in the supply box 45 will be squeezed out to the one-way valve 212 and then filled into the medicine storage chamber 223, just making up for the volume of the medicine squeezed out of the chamber.

[0031] When the device is in standby state, the lower cover 3 is sucked together with the upper cover 1, the rod 61 on one side of the U-shaped connecting frame 6 that is sleeved with the hexagonal shaft 12 is first removed, the drug press applicator is rotated to a vertical state, and then the rod 61 is sleeved on the hexagonal shaft 12, and the fastening bolt 573 is adjusted to make the friction block 574 press against the upper cover 1, so that the drug press applicator maintains this position. Figure 3 When the device is not in use temporarily, the rear end of the U-shaped connecting frame 6 can be taken out from the insert block 564 and placed in a medicine refrigerator together with the medicine press coater.

[0032] The device in this embodiment can achieve rapid and uniform coverage of radiotherapy topical drugs on the skin in the irradiation field and the surrounding area, and can effectively save the time of drug application, reduce the nursing work pressure of medical staff, and allow patients to have a comfortable nursing experience. In addition, the drug body in the drug applicator has a short contact time with the air, which not only ensures the sterile environment of the drug body, but also avoids its oxidation. For the skin within the irradiation field and the surrounding area of ​​about 1 cm, the embodiment of the present invention can quickly and automatically apply a drug layer with a thickness of about 1 mm. If a thickness of 2 mm is required, it can be pressed twice.

[0033] The above specific implementations cannot be used as limitations on the scope of protection of the present invention. For those skilled in the art, any replacement, improvement or change made to the implementations of the present invention falls within the scope of protection of the present invention. The parts not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A device for applying external medicine for acute radiation skin damage, characterized in that: The invention comprises a drug coating device, which is detachably mounted on a placement rack, and the drug coating device comprises an upper cover, a coating body and a lower cover in sequence, the upper cover and the lower cover are magnetically attracted, and the coating body comprises a piezoelectric cover plate and a coating main board; a micro-stepping motor and a supply box are mounted on the lower end of the upper cover, the output end of the micro-stepping motor is connected to one end of the supply box through a spiral mechanism, and a supply pipe is arranged at the other end of the supply box, a one-way valve is arranged on the supply pipe, the one-way valve is fixed on the piezoelectric cover plate, and the lower end of the supply pipe is communicated with a drug storage chamber of the coating main board; a plurality of piezoelectric laminated components are evenly arranged on the piezoelectric cover plate; pressure chambers corresponding to the plurality of piezoelectric laminated components are arranged on the coating main board, and a plurality of conical coating holes are arranged in the pressure chambers; the drug storage chamber is opened in the middle part of the coating main board, a plurality of pressure chambers are symmetrically arranged on both sides of the coating main board, and the drug storage chamber and the pressure chamber are communicated through a flow limiting area.

2. The device for applying external medicine for acute radiation skin damage according to claim 1, characterized in that: The pressure coating body also includes an adjustment plate and a deformation plate located at the lower part of the pressure coating main board; the two sides of the adjustment plate are fork combs, and the comb teeth of the fork comb are provided with adjustment holes, the comb teeth correspond to the pressure chambers one by one, and the adjustment holes correspond to the pressure coating holes one by one; the deformation plate includes a base plate and an elastic layer, and the base plate located at the lower part of the adjustment plate is provided with base holes corresponding to the adjustment holes, and the elastic layer is provided with a drug outlet tube corresponding to the adjustment holes, the lower end of the drug outlet tube slightly protrudes out of the lower end surface of the elastic layer, and the outer wall of the upper end part of the drug outlet tube fits the inner wall of the adjustment hole and the pressure coating hole.

3. The device for applying external medicine for acute radiation skin damage according to claim 2, characterized in that: The elastic layer includes slow-elastic memory foam and an elastic bottom film.

4. The device for applying external medicine for acute radiation skin damage according to claim 1, characterized in that: The placement rack includes a chassis and an adjustable support rod, the support rod is provided with a support arm and a tray for supporting the support arm, the support arm is fixed with an adjustable arm, the adjustable arm is connected with a four-bar mechanism, the four-bar mechanism includes an upper connecting rod, a lower connecting rod and a triangular plate, the two ends of the upper connecting rod are respectively hinged to the adjustable arm and the triangular plate, the two ends of the lower connecting rod are respectively connected to the adjustable arm and the triangular plate by bolts, an insertion block is also fixed to the triangular plate, a rear end of a U-shaped connecting frame is inserted into the insertion block, a front end of the U-shaped connecting frame is sleeved with the hexagonal shaft on one side of the upper cover, and the other front end of the U-shaped connecting piece is transfer-connected to the round shaft on one side of the upper cover.

5. The device for applying external medicine for acute radiation skin damage according to claim 4, characterized in that: A limit rod is fixed on the support arm by bolts, a positioning rod is sleeved on the front end of the limit rod, the positioning rod is installed on the limit rod by fastening bolts, and a friction block is arranged on the front end of the positioning rod.

6. The device for applying external medicine for acute radiation skin damage according to any one of claims 1 to 5, characterized in that: The upper cover is equipped with a control panel, a control circuit board and a drive circuit board which are in communication with each other. The control panel includes a panel body, on which a power button, a start / stop button and a plurality of selection buttons are arranged, and one selection button corresponds to one piezoelectric laminate.

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