CN109011166B - Human body auxiliary positioning device for radiotherapy and three-dimensional treatment bed - Google Patents
Human body auxiliary positioning device for radiotherapy and three-dimensional treatment bed Download PDFInfo
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- CN109011166B CN109011166B CN201810618474.0A CN201810618474A CN109011166B CN 109011166 B CN109011166 B CN 109011166B CN 201810618474 A CN201810618474 A CN 201810618474A CN 109011166 B CN109011166 B CN 109011166B
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Abstract
The invention discloses a human body auxiliary positioning device for radiotherapy and a three-dimensional treatment bed, wherein the auxiliary positioning device comprises a left positioning mechanism and a right positioning mechanism which are oppositely arranged, and the left positioning mechanism and the right positioning mechanism are respectively arranged on two sides of the treatment bed; left side positioning mechanism, right side positioning mechanism all are equipped with riser, fly leaf, arc locating plate and regulating spindle, and the riser lower part is fixed through coupling mechanism with treatment bed side, and openly open on riser upper portion has the bar mouth, the interior fly leaf of installing of bar mouth, fly leaf shape and the cooperation of bar mouth, and riser upper portion side, fly leaf side are all opened the groove is passed through to the bar, and the regulating spindle passes riser, installation positioning nut behind the groove is passed through to the bar of fly leaf in proper order, can adjust the relative height of fly leaf on the riser and the length that the fly leaf stretched into to the inboard through the regulating spindle. By the aid of the auxiliary positioning device, the body position of a patient during radiotherapy can be accurately positioned, and better and more accurate tumor radiotherapy is realized.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a human body auxiliary positioning device for radiotherapy and a three-dimensional treatment bed.
Background
Radiotherapy (Radiotherapy) is a therapy for killing malignant tumor by inhibiting its growth by irradiating it with radiation. The basic principle of radiotherapy is to destroy malignant tumors and preserve normal tissue. Ionizing radiation refers to electromagnetic waves or particles that can directly or indirectly produce ionizing effects in matter, and can be generated by artificially accelerating charged particles or by radionuclides.
Radiotherapy is started after the X-rays and radioactive materials are found. With the development of radiation physics, radiobiology, clinical oncology and various radiotherapy devices, the three main means for treating malignant tumors have been combined with surgical treatment and chemotherapy. About 70% of patients with malignant tumors require radiation therapy. Commonly used in external irradiation treatment machines are the medical electron linac followed by the cobalt 60 teletherapy machine. The internal irradiation therapeutic machine mainly comprises an isotope after-loading machine.
At present, when radiotherapy is clinically carried out on a patient, each part of the body of the patient needs to be fixed by adopting a body position fixing device, and the irradiated part is prevented from moving when irradiation is carried out, so that the irradiated dose of normal tissues is reduced, and the target area is ensured to be sufficiently irradiated. For example, the conventional medical electron linear accelerator adopts a motion system of an isocenter principle, i.e., the rotation axes of the gantry, the radiation head and the treatment couch intersect at a point called an isocenter, and the center error is required to be within ± 2 mm.
The selection of the radiotherapy body position not only ensures that the patient obtains the correct treatment body position, but also ensures that the body position is kept unchanged in the irradiation process, and meanwhile, the repeatability of each positioning is also considered. However, the existing body position fixing device is complex to use and generally needs to be implemented according to the actual height and body type of a patient, so that the labor of medical staff is increased; the commonality is relatively poor, even put of same patient position also lacks accurate location, and the repeatability of putting every turn is relatively poor.
For example, the chinese patent (publication No. CN 105079973B) discloses a "prone position fixing device for radiotherapy", which comprises a base and a slide block, wherein the slide block is arranged on the base and moves along the base, and the slide block is provided with a concave groove matched with part of the body of a patient. When the prone posture fixing device is used, a patient can lie on the prone posture fixing device for radiotherapy (face down), at the moment, some body parts of the patient are placed in the concave grooves, and the patient is fixed on the sliding block by using an external device or a buckling piece, so that subsequent disease treatment (such as radiotherapy) is facilitated. For another example, chinese patent (publication No. CN 104689479B) discloses an air bag bionic cradle bed for radiotherapy equipment, which is characterized in that one or more air bags, a control switch corresponding to the air bags, and a bidirectional air pump are disposed in the bottom bed surface direction of the bed plate, and the air pump inflates or deflates the air bags according to the breathing frequency and time phase to make the air bag bionic cradle bed move up and down. The cradle bed can be additionally provided with a synchronous multi-axis controller, and the synchronous multi-axis controller controls the combined motor and the motion of the air bag according to the respiration gating signals to guide the air bag bionic cradle bed to synchronously do cradle-like motion in the direction opposite to the target region motion direction caused by respiration.
The existing body position fixing device is still inconvenient to use and cannot meet the requirement of accurately placing the body position of a patient; in addition, the immunity of the patient after radiotherapy can be reduced, the existing radiotherapy equipment and the body position fixing device need to be maintained, cleaned and sterilized continuously, and the effective self-sterilization effect cannot be realized.
Disclosure of Invention
The invention provides a human body auxiliary positioning device for radiotherapy and a three-dimensional treatment bed, which are used for solving the problems in the prior art.
In order to realize the purpose of the invention, the following technical scheme is adopted:
a human body auxiliary positioning device for radiotherapy comprises a left positioning mechanism and a right positioning mechanism which are oppositely arranged, wherein the left positioning mechanism and the right positioning mechanism are respectively arranged on two sides of a treatment bed; the left side positioning mechanism and the right side positioning mechanism are respectively provided with a vertical plate, a movable plate, an arc-shaped positioning plate and an adjusting shaft, the lower part of the vertical plate is fixed with the side of the treatment bed through a connecting mechanism, the front side of the upper part of the vertical plate is provided with a strip-shaped opening, the movable plate is installed in the strip-shaped opening, the shape of the movable plate is matched with the strip-shaped opening, strip-shaped through grooves are formed in the side surface of the upper part of the vertical plate and the side surface of the movable plate, the adjusting shaft sequentially penetrates through the strip-shaped through grooves of the vertical plate and the movable plate and then; the arc-shaped positioning plate is arranged on the front side of the inner end of the movable plate, the arc-shaped positioning plate and the movable plate are movably mounted through a connecting rod, a clamping block is mounted at the upper end of the arc-shaped positioning plate of the left positioning mechanism, a clamping groove is formed in the clamping block, a reel box is mounted at the upper end of the arc-shaped positioning plate of the right positioning mechanism, a reel is mounted in the reel box, an elastic pressing belt is wound on the reel, a clamping head is arranged at the end part of the elastic pressing belt extending out of the reel box; the adjusting shaft comprises an outer cylinder and an inner cylinder, the inner cylinder is sleeved in the outer cylinder, a first spring is arranged between the bottom surface of the outer cylinder and the inner end of the inner cylinder, and the outer end of the inner cylinder extends out of the outer cylinder; the lateral wall of the outer barrel is provided with a rectangular opening at the position of the movable plate, an elastic clamping piece protruding towards the movable plate is installed in the rectangular opening, one end of the elastic clamping piece is hinged to the lateral wall of the outer barrel, the other end of the elastic clamping piece can be retracted into the outer barrel and a transverse fixing block is installed, a vertical sliding groove is formed in the inner side of the fixing block, a supporting vertical rod is arranged in the sliding groove, one end of the supporting vertical rod is in movable contact with the sliding groove, the other end of the supporting vertical rod is fixed with the inner barrel wall, and the.
The vertical plate, the movable plate and the arc-shaped positioning plate are all provided with a sterilization coating, and the raw materials for preparing the sterilization coating comprise the following components in parts by mass: 28-36 parts of alkyd resin, 70-90 parts of chlorinated rubber, 3-6 parts of lecithin, 8-10 parts of carboxymethyl cellulose, 30-35 parts of oxidized castor oil, 9-13 parts of calcium carbonate powder, 3-5 parts of benzene-terminated polyisobutylene, 6-8 parts of dodecyl alcohol ester, 2-5 parts of dimethyl azodiisobutyrate, Ag-CuO-MnO224-30 parts of composite bactericide, 12-16 parts of graphite fluoride, 5-9 parts of gelatin and 20-40 parts of propylene glycol.
In order to further realize the purpose of the invention, the following technical scheme can be adopted:
the auxiliary positioning device for radiotherapy comprises the following raw materials in parts by weight: 28 parts of alkyd resin, 70 parts of chlorinated rubber, 3 parts of lecithin, 8 parts of carboxymethyl cellulose, 30 parts of oxidized castor oil, 9 parts of calcium carbonate powder, 3 parts of benzene-terminated polyisobutylene, 6 parts of dodecyl alcohol ester, 2 parts of dimethyl azodiisobutyrate, and Ag-CuO-MnO 224 parts of composite bactericide, 12 parts of graphite fluoride, 5 parts of gelatin and 20 parts of propylene glycol.
The auxiliary positioning device for radiotherapy comprises the following raw materials in parts by weight: 32 parts of alkyd resin, 80 parts of chlorinated rubber, 5 parts of lecithin, 9 parts of carboxymethyl cellulose, 32 parts of oxidized castor oil, 11 parts of calcium carbonate powder and benzene-terminated polyisoiso-polymer4 parts of butylene, 7 parts of dodecyl alcohol ester, 4 parts of dimethyl azodiisobutyrate and Ag-CuO-MnO227 parts of composite bactericide, 14 parts of graphite fluoride, 7 parts of gelatin and 30 parts of propylene glycol.
The auxiliary positioning device for radiotherapy is Ag-CuO-MnO2The preparation method of the composite bactericide comprises the following steps:
(1) weighing copper nitrate and manganese sulfate, adding a proper amount of distilled water, mixing and stirring until the copper nitrate and the manganese sulfate are completely dissolved, then adding a urea solution and a sodium chlorate solution, mixing and stirring uniformly, adding the mixed solution into a high-pressure reaction kettle, heating to 120 ℃, keeping the temperature for 1h, heating to 140 ℃, keeping the temperature for 6h, filtering, washing, drying and grinding to obtain CuO-MnO2A tubular composite material;
(2) mixing diatomite and attapulgite, grinding, sieving with a 200-mesh sieve, adding into an appropriate amount of acid solution, stirring at 60 deg.C for 2 hr, filtering, and washing to obtain mixed powder;
(3) adding distilled water into the mixed powder prepared in the step (2), performing ultrasonic dispersion, adding cobalt nitrate and N-methylpyrrolidone, stirring, dissolving and dispersing uniformly, performing ultrasonic oscillation and stirring for 30min, rapidly injecting a sodium borohydride solution, stirring, dropwise adding a silver nitrate solution into the mixed solution, performing ultrasonic oscillation and stirring for 1h, and adding the CuO-MnO prepared in the step (1)2Stirring the tubular composite material and a proper amount of gelatin at 60 +/-5 ℃ to completely dissolve the tubular composite material and the gelatin to obtain a uniform colloidal mixed material;
(4) sealing and aging the colloidal mixed material prepared in the step (3), adding excessive alcohol into the aged colloidal mixed material, filtering to obtain a gelatin-based sponge, placing the gelatin-based sponge into liquid nitrogen for quick freezing for 3min, freeze-drying, roasting at the high temperature of 500 ℃ for 6h, cooling to room temperature, and grinding to obtain a mixed material;
(5) adding the mixed material obtained in the step (4) into an acetone solution, uniformly dispersing, adding sorbic acid, stirring for 1h, filtering and drying to obtain the Ag-CuO-MnO2A composite bactericide.
The body auxiliary positioning device for radiotherapy is characterized in that a through hole is formed in the center of the elastic clamping piece, a movable column is arranged in the through hole, a horizontal second spring is installed at the end part, located on the inner side of the elastic clamping piece, of the movable column, and the inner end of the second spring is fixed with the side wall of the outer barrel; the movable column is fixedly connected with the connecting end of the second spring, the other end of the metal pull rope penetrates through the side wall of the outer barrel and then is fixed with the lower portion of the inner barrel, and the pull rope is located below the supporting vertical rod.
The auxiliary positioning device for the radiotherapy is characterized in that a plurality of positioning holes are formed in the inner wall of the strip-shaped through groove of the movable plate at intervals, and the outer end of the movable column can extend into the positioning holes; the through hole and the movable column are both conical, and the diameter of the outer end of the movable column is larger than that of the inner side of the through hole.
The auxiliary positioning device for the radiotherapy is characterized in that 2 sets of elastic clamping pieces are symmetrically arranged on the side wall of the outer cylinder; the first spring sleeve is arranged on the vertical guide rod in a sleeved mode, the lower end of the guide rod is fixed to the inner bottom of the outer cylinder, and the upper end of the guide rod extends into the inner cylinder.
The invention also provides a three-dimensional treatment bed, which comprises a base, a three-dimensional movement mechanism and a bed body, wherein the bed body is provided with the auxiliary positioning device.
According to the three-dimensional treatment bed, the two sides of the bed body are respectively provided with the containing cavities, the containing cavities are internally provided with the transverse dovetail grooves, the connecting mechanism comprises the sliding blocks arranged in the dovetail grooves and the telescopic rods arranged on the outer sides of the sliding blocks, the lower parts of the vertical plates are provided with the connecting holes, and after the outer ends of the telescopic rods penetrate through the connecting holes, the vertical plates are fixed through the matching of a threaded structure and nuts; after the arc-shaped positioning plate is removed, the movable plate can be folded to the middle of the vertical plate, so that the auxiliary positioning device is integrally placed in the accommodating cavity.
According to the three-dimensional treatment bed, 2-4 sets of auxiliary positioning devices are symmetrically arranged on two sides of the bed body.
The invention has the beneficial effects that:
1. the auxiliary positioning device comprises the left positioning mechanism and the right positioning mechanism which are oppositely arranged, the installation and the use are convenient, and the body position of a patient during radiotherapy can be accurately positioned through the left positioning mechanism and the right positioning mechanism, so that better and more accurate tumor radiotherapy is realized.
2. Left side positioning mechanism, right side positioning mechanism all are equipped with riser, fly leaf, arc locating plate and regulating spindle, and the riser lower part is fixed through coupling mechanism with the treatment bed side, and openly open on riser upper portion has the bar mouth, installs the fly leaf in the bar mouth, and the fly leaf shape cooperates with the bar mouth, and the groove is passed through to the bar has all been opened to riser upper portion side, fly leaf side, can adjust the relative height of fly leaf on the riser and the length that the fly leaf stretched into to the inboard through the regulating spindle. 2 arc locating plate sets up patient health both sides relatively, then can provide external force through elasticity compressing band to patient's health and fix to can avoid rocking of patient at the radiotherapy in-process, influence treatment. Because arc locating plate, elasticity compressing band are all can dismantle, make things convenient for patient's position adjustment and have better assistance-localization real-time effect, can not produce great extrusion to patient's health, improve the comfort level of using.
3. By using the strip-shaped openings formed in the vertical plates, the movable plate can be folded to the middle of the vertical plate after the arc-shaped positioning plate is removed, so that the auxiliary positioning device can be conveniently accommodated; when the treatment bed is installed on the treatment bed, the auxiliary positioning device is placed through the containing cavities arranged on the two sides of the bed body, so that the patient can conveniently go up and down the treatment bed.
4. The invention is characterized in that the vertical plate, the movable plate and the arc positioning plate are all provided with a sterilization coating, alkyd resin and chlorinated rubber are used as main materials, the sterilization coating is matched with graphite fluoride, oxidized castor oil, Ag-CuO-MnO2 composite bactericide and other additives to obtain the formula proportion of the sterilization coating, the graphite fluoride and the oxidized castor oil are matched with the alkyd resin and the chlorinated rubber to improve the wear resistance, the corrosion resistance and the hardness of the sterilization coating, the structure of the oxidized castor oil and the structures of the alkyd resin and the chlorinated rubber are mutually penetrated and penetrated to form an interpenetrating network structure, the Ag-CuO-MnO2 composite bactericide and calcium carbonate powder are penetrated in the sterilization coating, the paint has the advantages of uniform dispersion, difficult precipitation, fast drying of a coating film, uniform film formation, compact structure of the coating film, strong adhesive force and good water-proof permeability, and can be firmly attached to the surface of an object to be coated.
5. The Ag-CuO-MnO2 composite bactericide in the bactericidal coating has a continuous carbon layer with a porous structure, can be better crosslinked with other materials in the coating after modification, is uniformly distributed in an interpenetrating network structure of the coating and is not easy to separate out, the bactericidal effect is also completed under the mutual synergistic effect of four materials, namely a nano silver hollow sphere, a CuO-MnO2 tubular composite material, diatomite and attapulgite, the composite bactericide has a plurality of porous structures with different sizes and is easier to adsorb bacteria, moreover, the silver in the Ag-CuO-MnO2 composite bactericide is of a hollow sphere structure, the generated nano silver hollow sphere is coated on the diatomite and the attapulgite, the CuO is coated on the tubular MnO2, and the nano silver hollow sphere and the CuO are communicated with each other, so that the bactericidal and antibacterial effects can be better promoted; firstly, the composite bactericide has a plurality of porous structures with different sizes, which can efficiently and quickly adsorb bacteria, the nano-silver hollow spheres are distributed on the surfaces of diatomite, attapulgite and CuO-MnO2 tubular composite materials, the nano-silver hollow spheres and the nano-CuO are communicated with each other, the particle diameters of the nano-silver hollow spheres and the nano-CuO are small and uniformly distributed, the nano-silver hollow spheres can be quickly adsorbed on the surface of a bacterial cell membrane to block the normal substance transmission of the bacteria and destroy the physiological function of the bacteria, the nano-CuO penetrates through the bacterial cell membrane to enter the inside of the bacteria to inhibit the growth of the bacteria, and the nano-silver hollow spheres, the CuO-2 tubular composite materials, the diatomite and the attapulgite are mutually matched to act, so that the.
6. The bactericidal coating disclosed by the invention is compact in film structure, can be firmly attached to the surface of an object to be coated, is strong in adhesive force, has better wear resistance and corrosion resistance, also has good pollution resistance and bactericidal and bacteriostatic properties, breaks through the defects of the traditional mechanical coating, can kill bacteria, inhibit the growth of bacteria, is safe and environment-friendly, provides a safer, healthier and cleaner environment for equipment users, and can be widely applied to the fields of medical equipment, toys for children, electrical appliances, health-care and fitness equipment, other common equipment and the like.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of section I of FIG. 1;
FIG. 3 is an enlarged view taken from the direction A of FIG. 1;
FIG. 4 is a schematic view of the left positioning mechanism of FIG. 3;
FIG. 5 is a schematic view of the right positioning mechanism of FIG. 3;
FIG. 6 is a schematic view of the internal structure of the adjustment shaft of FIG. 3;
FIG. 7 is a sectional view taken along line B-B of FIG. 6;
FIG. 8 is another state reference diagram of FIG. 6;
fig. 9 is a partially enlarged view of ii in fig. 8.
Reference numerals: 1-base, 2-three-dimensional motion mechanism, 3-bed body, 5-left side positioning mechanism, 6-right side positioning mechanism, 7-vertical plate, 8-movable plate, 9-arc positioning plate, 10-adjusting shaft, 11-strip-shaped opening, 12-strip-shaped through groove, 13-clamping block, 14-reel box, 15-elastic pressing belt, 16-outer barrel, 17-inner barrel, 18-first spring, 19-rectangular opening, 20-elastic clamping piece, 21-supporting vertical rod, 22-movable column, 23-second spring, 24-metal pull rope, 25-guide rod, 26-containing cavity, 27-dovetail groove, 28-slide block, 29-telescopic rod, 30-nut, 31-rotating handle and 32-connecting rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The human body auxiliary positioning device for radiotherapy disclosed in the embodiment comprises a left positioning mechanism 5 and a right positioning mechanism 6 which are oppositely arranged, wherein the left positioning mechanism 5 and the right positioning mechanism 6 are respectively arranged on two sides of a treatment couch;
the left side positioning mechanism 5 and the right side positioning mechanism 6 are respectively provided with a vertical plate 7, a movable plate 8, an arc-shaped positioning plate 9 and an adjusting shaft 10, the lower part of the vertical plate 7 is fixed with the side of the treatment bed through a connecting mechanism, the front surface of the upper part of the vertical plate 7 is provided with a strip-shaped opening 11, the movable plate 8 is installed in the strip-shaped opening 11, the shape of the movable plate 8 is matched with the strip-shaped opening 11, the side surface of the upper part of the vertical plate 7 and the side surface of the movable plate 8 are respectively provided with a strip-shaped through groove 12, the adjusting shaft 10 sequentially penetrates through the vertical plate 7 and the strip-shaped through grooves 12 of the movable plate 8 and then is provided with; the arc-shaped positioning plate 9 is arranged on the front side of the inner end of the movable plate 8, the arc-shaped positioning plate 9 and the movable plate 8 are movably mounted through a connecting rod 32, a clamping block 13 is mounted at the upper end of the arc-shaped positioning plate 9 of the left positioning mechanism 5, a clamping groove is formed in the clamping block 13, a reel box 14 is mounted at the upper end of the arc-shaped positioning plate 9 of the right positioning mechanism 6, a reel is mounted in the reel box 14, an elastic pressing belt 15 is wound on the reel, a clamping head is arranged at the end part, extending out of the reel box 14, of the elastic pressing belt 15;
the adjusting shaft 10 comprises an outer cylinder 16 and an inner cylinder 17, the inner cylinder 17 is sleeved in the outer cylinder 16, a first spring 18 is arranged between the bottom surface of the outer cylinder 16 and the inner end of the inner cylinder 17, and the outer end of the inner cylinder 17 extends out of the outer cylinder 16; a rectangular opening 19 is formed in the side wall of the outer cylinder 16 and located at the position of the movable plate 8, an elastic clamping piece protruding towards the movable plate 8 is installed in the rectangular opening 19, one end of the elastic clamping piece is hinged to the side wall of the outer cylinder 16, the other end of the elastic clamping piece can be retracted into the outer cylinder 16 and provided with a transverse fixing block, a vertical sliding groove is formed in the inner side of the fixing block, a supporting vertical rod 21 is arranged in the sliding groove, one end of the supporting vertical rod 21 is in movable contact with the sliding groove, the other end of the supporting vertical rod 21 is fixed to the wall of the inner cylinder 17, and; the vertical plate 7, the movable plate 8 and the arc-shaped positioning plate 9 are all provided with sterilization coatings.
Particularly, the auxiliary positioning device comprises a left positioning mechanism 5 and a right positioning mechanism 6 which are oppositely arranged, is convenient to install and use, and can accurately position the body position of a patient during radiotherapy, so that better radiotherapy is realized.
Left side positioning mechanism 5, right side positioning mechanism 6 all are equipped with riser 7, fly leaf 8, arc locating plate 9 and regulating spindle 10, and 7 lower parts of riser are fixed through coupling mechanism with the treatment bed side, and 7 upper portions of riser openly open there is the bar mouth 11, and installation fly leaf 8 in the bar mouth 11, 8 shapes of fly leaf and the cooperation of bar mouth 11, 7 upper portion sides of riser, fly leaf 8 side all open the groove 12 that passes through of bar, can adjust the relative height of fly leaf 8 on riser 7 and the length that fly leaf 8 stretched into to the inboard through regulating spindle 10. The adjusting shaft 10 is fixed to the vertical plate 7 and is clamped and connected with a thread structure at the end of the adjusting shaft through a positioning nut, and the adjusting shaft and the movable plate 8 are adjusted in angle relative to the vertical plate 7 through an elastic clamping piece. The arc-shaped positioning plate 9 provides stable support by using the connecting rod 32 and two acting points at the inner end of the movable plate 8.
2 arc locating plate 9 sets up patient's health both sides relatively, then can provide external force through elasticity compressing band 15 to patient's health and fix to can avoid rocking of patient at the radiotherapy in-process, influence treatment. Because arc locating plate 9, elasticity compressing band 15 are all can dismantle, make things convenient for patient's position adjustment and have better assistance-localization real-time effect, can not produce great extrusion to patient's health, improve the comfort level of using.
When the device is used, a patient lies on the back of a treatment bed and preliminarily adjusts the body position of the patient, then the left positioning mechanism 5 and the right positioning mechanism 6 are respectively fixed with two sides of the treatment bed through the connecting mechanism at the lower part, then the movable plate 8 is separated from the strip-shaped opening 11 of the vertical plate 7 by operating the adjusting shaft 10, at the moment, the movable plate 8 can be in a vertical or inclined state, and the arc-shaped positioning plate is attached to the contact part of the body of the patient, for the convenience of operation, the end part of the adjusting shaft 10 is provided with the rotating handle 31, the rotating handle 31 can also be provided with an indicating line of the rotating angle of the adjusting shaft 10 relative to the vertical plate 7, so as to accurately realize that the left positioning mechanism 5 and the right positioning mechanism 6 are kept uniform, the relative height of the movable plate 8 on the vertical plate 7 and the length of the movable plate 8 extending inwards relative, thereby can realize accurate positioning to patient's position, also can adapt to the location needs of different patient bodily forms simultaneously.
As shown in fig. 7 and 9, in this embodiment, a through hole is formed in the center of the elastic clip, a movable post 22 is disposed in the through hole, a horizontal second spring 23 is mounted on the end of the movable post 22 located inside the elastic clip, and the inner end of the second spring 23 is fixed to the side wall of the outer cylinder 16; the connecting end of the movable column 22 and the second spring 23 is fixedly connected with a metal pull rope 24, the other end of the metal pull rope 24 penetrates through the side wall of the outer cylinder 16 and then is fixed with the lower part of the inner cylinder 17, and the pull rope is positioned below the supporting cross rod.
The movable column 22 is installed at the central part of the elastic clip, the extrusion force between the adjusting shaft 10 and the movable plate 8 is increased, the lateral stability of the adjusting plate 8 is improved, and in order to increase the friction force between the adjusting shaft 10 and the strip-shaped through groove 12 wall of the movable plate 8, 2 sets of elastic clips can be symmetrically arranged on the side wall of the outer cylinder 16.
Furthermore, in this embodiment, a plurality of positioning holes are spaced apart from the inner wall of the strip-shaped through slot 12 of the movable plate 8, and the outer end of the movable column 22 can extend into the positioning holes; the through hole and the movable column 22 are both conical, and the diameter of the outer end of the movable column 22 is larger than that of the inner side of the through hole. Through the cooperation of the plurality of positioning holes and the movable columns 22, on one hand, the rotational positioning of the movable plate 8 can be improved, and on the other hand, the stability of the connection between the adjusting shaft 10 and the movable plate 8 can also be increased.
As shown in fig. 6 and 8, the first spring 18 of the present embodiment is sleeved on a vertical guide rod 25, the lower end of the guide rod 25 is fixed with the inner bottom of the outer cylinder 16, and the upper end thereof extends into the inner cylinder 17. The guide rod 25 can ensure the accuracy of the movement of the inner cylinder 17 in the outer cylinder 16, especially can improve the positioning and matching performance of the sliding grooves on the end parts of the vertical support rod 21 and the elastic clamping piece, and ensures that the elastic clamping piece and the side wall of the sliding groove form better extrusion force.
The vertical plate 7, the movable plate 8 and the arc-shaped positioning plate 9 are all provided with the sterilization coating to improve the self-cleaning function of the existing body position fixing device and the treatment bed, and the raw materials for preparing the sterilization coating comprise the following components in parts by mass: 28-36 parts of alkyd resin, 70-90 parts of chlorinated rubber, 3-6 parts of lecithin, 8-10 parts of carboxymethyl cellulose, 30-35 parts of oxidized castor oil, 9-13 parts of calcium carbonate powder, 3-5 parts of benzene-terminated polyisobutylene, 6-8 parts of dodecyl alcohol ester, 2-5 parts of dimethyl azodiisobutyrate, Ag-CuO-MnO224-30 parts of composite bactericide, 12-16 parts of graphite fluoride, 5-9 parts of gelatin and 20-40 parts of propylene glycol.
Example 1
The raw materials for preparing the bactericidal coating comprise the following components in parts by mass: 28 parts of alkyd resin, 70 parts of chlorinated rubber, 3 parts of lecithin, 8 parts of carboxymethyl cellulose, 30 parts of oxidized castor oil, 9 parts of calcium carbonate powder, 3 parts of benzene-terminated polyisobutylene, 6 parts of dodecyl alcohol ester, 2 parts of dimethyl azodiisobutyrate, 24 parts of Ag-CuO-MnO2 composite bactericide, 12 parts of graphite fluoride, 5 parts of gelatin and 20 parts of propylene glycol.
The preparation method of the Ag-CuO-MnO2 composite bactericide comprises the following steps: weighing copper nitrate and manganese sulfate, adding a proper amount of distilled water, mixing and stirring until the copper nitrate and the manganese sulfate are completely dissolved, then adding a urea solution and a sodium chlorate solution, mixing and stirring uniformly, adding the mixed solution into a high-pressure reaction kettle, heating to 120 ℃, keeping the temperature for 1h, heating to 140 ℃, keeping the temperature for 6h, filtering, washing, drying and grinding to obtain a CuO-MnO2 tubular composite material; mixing diatomite and attapulgite, grinding, sieving with a 200-mesh sieve, adding into an appropriate amount of acid solution, stirring at 60 deg.C for 2 hr, filtering, and washing to obtain mixed powder; adding distilled water into the mixed powder, performing ultrasonic dispersion, adding cobalt nitrate and N-methylpyrrolidone, stirring, dissolving and dispersing uniformly, performing ultrasonic oscillation, rapidly injecting a sodium borohydride solution under stirring, and stirring for 30 min;
dropwise adding a silver nitrate solution into the mixed solution, carrying out ultrasonic oscillation and stirring for 1h, then adding a CuO-MnO2 tubular composite material and a proper amount of gelatin, and stirring at 60 +/-5 ℃ to completely dissolve the CuO-MnO2 tubular composite material and the gelatin to obtain a uniform colloidal mixed material; sealing and aging the colloidal mixed material for 6h, then adding excessive alcohol into the aged colloidal mixed material, filtering to obtain a gelatin-based sponge, placing the gelatin-based sponge into liquid nitrogen for quick freezing for 3min, freeze-drying, roasting at the high temperature of 500 ℃ for 6h, cooling to room temperature, grinding and crushing to obtain a mixed material; adding the mixed material into an acetone solution, uniformly dispersing, adding sorbic acid, stirring for 1h, filtering and drying to obtain the Ag-CuO-MnO2 composite bactericide, wherein in the prepared Ag-CuO-MnO2 composite bactericide, the mass ratio of Ag to CuO to MnO2 to diatomite to attapulgite is 2:1:0.8:6: 8.
The preparation method of the bactericidal coating comprises the following steps:
(1) ultrasonically stirring and uniformly mixing oxidized castor oil, graphite fluoride and 1/3 parts by weight of benzene-terminated polyisobutylene to obtain a mixed material A;
(2) putting alkyd resin, chlorinated rubber, propylene glycol and lecithin into a reaction kettle, and mechanically stirring until the alkyd resin, the chlorinated rubber, the propylene glycol and the lecithin are completely and uniformly mixed to obtain a mixed material B;
(3) heating the mixed material B in the reaction kettle to 70 ℃, adding dimethyl azodiisobutyrate and the residual 2/3 parts by weight of benzene-terminated polyisobutylene, mechanically stirring for 30min, adding the Ag-CuO-MnO2 composite bactericide and calcium carbonate powder, and mechanically stirring for 6h to obtain a mixed material C;
(4) heating the mixed material C in the reaction kettle to 120 ℃, dropwise adding the mixed material A under the condition of mechanical stirring, and after dropwise adding is finished, continuously stirring for 6 hours at 120 ℃ to obtain a mixed material D;
(5) and cooling the mixed material D to 50 ℃, adding the carboxymethyl cellulose, the dodecyl alcohol ester and the gelatin, mechanically stirring until the carboxymethyl cellulose, the dodecyl alcohol ester and the gelatin are completely dissolved and uniformly dispersed, and cooling to room temperature to obtain the bactericidal coating.
Example 2
The raw materials for preparing the bactericidal coating comprise the following components in parts by mass: 32 parts of alkyd resin, 80 parts of chlorinated rubber, 5 parts of lecithin, 9 parts of carboxymethyl cellulose, 32 parts of oxidized castor oil, 11 parts of calcium carbonate powder, 4 parts of benzene-terminated polyisobutylene, 7 parts of dodecyl alcohol ester, 4 parts of dimethyl azodiisobutyrate, 27 parts of Ag-CuO-MnO2 composite bactericide, 14 parts of graphite fluoride, 7 parts of gelatin and 30 parts of propylene glycol.
The preparation method of the Ag-CuO-MnO2 composite bactericide comprises the following steps: weighing copper nitrate and manganese sulfate, adding a proper amount of distilled water, mixing and stirring until the copper nitrate and the manganese sulfate are completely dissolved, then adding a urea solution and a sodium chlorate solution, mixing and stirring uniformly, adding the mixed solution into a high-pressure reaction kettle, heating to 120 ℃ at the speed of 6-8 ℃/min, preserving heat for 1h, heating to 140 ℃ and preserving heat for 6h, filtering, washing, drying and grinding to obtain a CuO-MnO2 tubular composite material; mixing diatomite and attapulgite, grinding, sieving with a 200-mesh sieve, adding into an appropriate amount of acid solution, stirring at 60 deg.C for 2 hr, filtering, and washing to obtain mixed powder; adding distilled water into the mixed powder, performing ultrasonic dispersion, adding cobalt nitrate and N-methylpyrrolidone, stirring, dissolving and dispersing uniformly, performing ultrasonic oscillation, rapidly injecting a sodium borohydride solution under stirring, and stirring for 30 min;
dropwise adding a silver nitrate solution into the mixed solution, carrying out ultrasonic oscillation and stirring for 1h, then adding a CuO-MnO2 tubular composite material and a proper amount of gelatin, and stirring at 60 +/-5 ℃ to completely dissolve the CuO-MnO2 tubular composite material and the gelatin to obtain a uniform colloidal mixed material; sealing and aging the colloidal mixed material for 8h, then adding excessive alcohol into the aged colloidal mixed material, filtering to obtain a gelatin-based sponge, placing the gelatin-based sponge into liquid nitrogen for quick freezing for 3min, freeze-drying, roasting at the high temperature of 500 ℃ for 6h, cooling to room temperature, grinding and crushing to obtain a mixed material; adding the mixed material into an acetone solution, uniformly dispersing, adding sorbic acid, stirring for 1h, filtering and drying to obtain the Ag-CuO-MnO2 composite bactericide, wherein in the prepared Ag-CuO-MnO2 composite bactericide, the mass ratio of Ag to CuO to MnO2 to diatomite to attapulgite is 3:1.5:0.8:10: 8.
The preparation method of the bactericidal coating comprises the following steps:
(1) ultrasonically stirring and uniformly mixing oxidized castor oil, graphite fluoride and 1/3 parts by weight of benzene-terminated polyisobutylene to obtain a mixed material A;
(2) putting alkyd resin, chlorinated rubber, propylene glycol and lecithin into a reaction kettle, and mechanically stirring until the alkyd resin, the chlorinated rubber, the propylene glycol and the lecithin are completely and uniformly mixed to obtain a mixed material B;
(3) heating the mixed material B in the reaction kettle to 70 ℃, adding dimethyl azodiisobutyrate and the residual 2/3 parts by weight of benzene-terminated polyisobutylene, mechanically stirring for 30min, adding the Ag-CuO-MnO2 composite bactericide and calcium carbonate powder, and mechanically stirring for 10h to obtain a mixed material C;
(4) heating the mixed material C in the reaction kettle to 120 ℃, dropwise adding the mixed material A under the condition of mechanical stirring, and after dropwise adding is finished, continuously stirring for 8 hours at 120 ℃ to obtain a mixed material D;
(5) and cooling the mixed material D to 50 ℃, adding the carboxymethyl cellulose, the dodecyl alcohol ester and the gelatin, mechanically stirring until the carboxymethyl cellulose, the dodecyl alcohol ester and the gelatin are completely dissolved and uniformly dispersed, and cooling to room temperature to obtain the bactericidal coating.
Example 3
The raw materials for preparing the bactericidal coating comprise the following components in parts by mass: 36 parts of alkyd resin, 90 parts of chlorinated rubber, 6 parts of lecithin, 10 parts of carboxymethyl cellulose, 35 parts of oxidized castor oil, 13 parts of calcium carbonate powder, 5 parts of benzene-terminated polyisobutylene, 8 parts of dodecyl alcohol ester, 5 parts of dimethyl azodiisobutyrate, 30 parts of Ag-CuO-MnO2 composite bactericide, 16 parts of graphite fluoride, 9 parts of gelatin and 40 parts of propylene glycol.
The preparation method of the Ag-CuO-MnO2 composite bactericide comprises the following steps: weighing copper nitrate and manganese sulfate, adding a proper amount of distilled water, mixing and stirring until the copper nitrate and the manganese sulfate are completely dissolved, then adding a urea solution and a sodium chlorate solution, mixing and stirring uniformly, adding the mixed solution into a high-pressure reaction kettle, heating to 120 ℃ at the speed of 6-8 ℃/min, preserving heat for 1h, heating to 140 ℃ and preserving heat for 6h, filtering, washing, drying and grinding to obtain a CuO-MnO2 tubular composite material; mixing diatomite and attapulgite, grinding, sieving with a 200-mesh sieve, adding into an appropriate amount of acid solution, stirring at 60 deg.C for 2 hr, filtering, and washing to obtain mixed powder;
adding distilled water into the mixed powder, performing ultrasonic dispersion, adding cobalt nitrate and N-methyl pyrrolidone, stirring, dissolving and dispersing uniformly, performing ultrasonic oscillation and stirring for 30min, rapidly injecting a sodium borohydride solution, dropwise adding a silver nitrate solution into the mixed solution, performing ultrasonic oscillation and stirring for 1h, adding a CuO-MnO2 tubular composite material and a proper amount of gelatin, and stirring at 60 +/-5 ℃ to completely dissolve the CuO-MnO2 tubular composite material and the gelatin to obtain a uniform colloidal mixed material; sealing and aging the colloidal mixed material for 7h, then adding excessive alcohol into the aged colloidal mixed material, filtering to obtain a gelatin-based sponge, placing the gelatin-based sponge into liquid nitrogen for quick freezing for 3min, freeze-drying, roasting at the high temperature of 500 ℃ for 6h, cooling to room temperature, grinding and crushing to obtain a mixed material; adding the mixed material into an acetone solution, uniformly dispersing, adding sorbic acid, stirring for 1h, filtering and drying to obtain the Ag-CuO-MnO2 composite bactericide, wherein in the prepared Ag-CuO-MnO2 composite bactericide, the Ag-CuO-MnO2 composite bactericide comprises Ag, CuO, MnO2, kieselguhr and attapulgite in a mass ratio of 4:2:0.8:8: 8.
The preparation method of the bactericidal coating comprises the following steps:
(1) ultrasonically stirring and uniformly mixing oxidized castor oil, graphite fluoride and 1/3 parts by weight of benzene-terminated polyisobutylene to obtain a mixed material A;
(2) putting alkyd resin, chlorinated rubber, propylene glycol and lecithin into a reaction kettle, and mechanically stirring until the alkyd resin, the chlorinated rubber, the propylene glycol and the lecithin are completely and uniformly mixed to obtain a mixed material B;
(3) heating the mixed material B in the reaction kettle to 70 ℃, adding dimethyl azodiisobutyrate and the residual 2/3 parts by weight of benzene-terminated polyisobutylene, mechanically stirring for 30min, adding the Ag-CuO-MnO2 composite bactericide and calcium carbonate powder, and mechanically stirring for 8h to obtain a mixed material C;
(4) heating the mixed material C in the reaction kettle to 120 ℃, dropwise adding the mixed material A under the condition of mechanical stirring, and after dropwise adding is finished, continuously stirring for 8 hours at 120 ℃ to obtain a mixed material D;
(5) and cooling the mixed material D to 50 ℃, adding the carboxymethyl cellulose, the dodecyl alcohol ester and the gelatin, mechanically stirring until the carboxymethyl cellulose, the dodecyl alcohol ester and the gelatin are completely dissolved and uniformly dispersed, and cooling to room temperature to obtain the bactericidal coating.
Comparative example 1
The raw materials for preparing the bactericidal coating comprise the following components in parts by mass: 32 parts of alkyd resin, 80 parts of chlorinated rubber, 5 parts of lecithin, 9 parts of carboxymethyl cellulose, 32 parts of oxidized castor oil, 11 parts of calcium carbonate powder, 4 parts of benzene-terminated polyisobutylene, 7 parts of dodecyl alcohol ester, 4 parts of dimethyl azodiisobutyrate, 14 parts of graphite fluoride, 7 parts of gelatin and 30 parts of propylene glycol.
The preparation method of the bactericidal coating comprises the following steps: ultrasonically stirring and uniformly mixing oxidized castor oil, graphite fluoride and 1/3 parts by weight of benzene-terminated polyisobutylene to obtain a mixed material A; putting alkyd resin, chlorinated rubber, propylene glycol and lecithin into a reaction kettle, and mechanically stirring until the alkyd resin, the chlorinated rubber, the propylene glycol and the lecithin are completely and uniformly mixed to obtain a mixed material B; heating the mixed material B in the reaction kettle to 70 ℃, adding dimethyl azodiisobutyrate and the residual 2/3 parts by weight of benzene-terminated polyisobutylene, mechanically stirring for 30min, adding calcium carbonate powder, mechanically stirring for 10h, heating to 120 ℃, dropwise adding the mixed material A under the condition of mechanical stirring, after dropwise adding, continuously stirring for 8h at 120 ℃, cooling to 50 ℃, adding carboxymethyl cellulose, dodecyl alcohol ester and gelatin, mechanically stirring until complete dissolution and uniform dispersion, and cooling to room temperature to obtain the mechanical coating.
Comparative example 2
The raw materials for preparing the bactericidal coating comprise the following components in parts by mass: 32 parts of alkyd resin, 80 parts of chlorinated rubber, 5 parts of lecithin, 9 parts of carboxymethyl cellulose, 32 parts of oxidized castor oil, 11 parts of calcium carbonate powder, 4 parts of benzene-terminated polyisobutylene, 7 parts of dodecyl alcohol ester, 4 parts of dimethyl azodiisobutyrate, 27 parts of Ag composite bactericide, 14 parts of graphite fluoride, 7 parts of gelatin and 30 parts of propylene glycol.
The preparation method of the Ag composite bactericide comprises the following steps: mixing diatomite and attapulgite, grinding, sieving with a 200-mesh sieve, adding into an appropriate amount of acid solution, stirring at 60 deg.C for 2 hr, filtering, and washing to obtain mixed powder; adding distilled water into the mixed powder, performing ultrasonic dispersion, adding cobalt nitrate and N-methyl pyrrolidone, stirring, dissolving and dispersing uniformly, rapidly injecting a sodium borohydride solution under ultrasonic oscillation and stirring conditions, stirring for 30min, dropwise adding a silver nitrate solution into the mixed solution, performing ultrasonic oscillation and stirring for 1h, adding a proper amount of gelatin, and stirring at 60 +/-5 ℃ to completely dissolve the gelatin to obtain a uniform colloidal mixed material; sealing and aging the colloidal mixed material for 8h, then adding excessive alcohol into the aged colloidal mixed material, filtering to obtain a gelatin-based sponge, placing the gelatin-based sponge into liquid nitrogen for quick freezing for 3min, freeze-drying, roasting at the high temperature of 500 ℃ for 6h, cooling to room temperature, grinding and crushing to obtain a mixed material;
and adding the mixed material into an acetone solution, uniformly dispersing, adding sorbic acid, stirring for 1h, filtering and drying to obtain the Ag composite bactericide, wherein the mass ratio of Ag to diatomite to attapulgite in the prepared Ag composite bactericide is 5:10: 8.
The preparation method of the bactericidal coating comprises the following steps: ultrasonically stirring and uniformly mixing oxidized castor oil, graphite fluoride and 1/3 parts by weight of benzene-terminated polyisobutylene to obtain a mixed material A; putting alkyd resin, chlorinated rubber, propylene glycol and lecithin into a reaction kettle, and mechanically stirring until the alkyd resin, the chlorinated rubber, the propylene glycol and the lecithin are completely and uniformly mixed to obtain a mixed material B; heating the mixed material B in the reaction kettle to 70 ℃, adding dimethyl azodiisobutyrate and the residual 2/3 parts by weight of phenyl end group polyisobutylene, mechanically stirring for 30min, adding an Ag composite bactericide and calcium carbonate powder, mechanically stirring for 10h, heating to 120 ℃, dropwise adding the mixed material A under the condition of mechanical stirring, continuously stirring for 8h after dropwise adding, cooling to 50 ℃, adding carboxymethyl cellulose, dodecyl alcohol ester and gelatin, mechanically stirring until complete dissolution and uniform dispersion, and cooling to room temperature to obtain the bactericidal coating.
Comparative example 3
The raw materials for preparing the bactericidal coating comprise the following components in parts by mass: 32 parts of alkyd resin, 80 parts of chlorinated rubber, 5 parts of lecithin, 9 parts of carboxymethyl cellulose, 32 parts of oxidized castor oil, 11 parts of calcium carbonate powder, 4 parts of benzene-terminated polyisobutylene, 7 parts of dodecyl alcohol ester, 4 parts of dimethyl azodiisobutyrate, 27 parts of CuO-MnO2 composite bactericide, 14 parts of graphite fluoride, 7 parts of gelatin and 30 parts of propylene glycol.
The preparation method of the CuO-MnO2 composite bactericide comprises the following steps: weighing copper nitrate and manganese sulfate, adding a proper amount of distilled water, mixing and stirring until the copper nitrate and the manganese sulfate are completely dissolved, then adding a urea solution and a sodium chlorate solution, mixing and stirring uniformly, adding the mixed solution into a high-pressure reaction kettle, heating to 120 ℃ at the speed of 6-8 ℃/min, preserving heat for 1h, heating to 140 ℃ and preserving heat for 6h, filtering, washing, drying and grinding to obtain a CuO-MnO2 tubular composite material; mixing diatomite and attapulgite, grinding, sieving with a 200-mesh sieve, adding into an appropriate amount of acid solution, stirring at 60 deg.C for 2 hr, filtering, and washing to obtain mixed powder; adding distilled water into the mixed powder, performing ultrasonic dispersion, adding a CuO-MnO2 tubular composite material and a proper amount of gelatin, and stirring at 60 +/-5 ℃ to completely dissolve the CuO-MnO2 tubular composite material and the gelatin to obtain a uniform colloidal mixed material; sealing and aging the colloidal mixed material for 8h, adding excessive alcohol into the aged colloidal mixed material, and filtering to obtain a sponge based on gelatin;
placing the sponge body based on the gelatin into liquid nitrogen for quick freezing for 3min, after freeze drying, roasting at the high temperature of 500 ℃ for 6h, cooling to room temperature, grinding and crushing to obtain a mixed material; adding the mixed material into an acetone solution, uniformly dispersing, adding sorbic acid, stirring for 1h, filtering and drying to obtain the CuO-MnO2 composite bactericide, wherein in the prepared CuO-MnO2 composite bactericide, the mass ratio of CuO, MnO2, kieselguhr and attapulgite is 4:10: 8.
The preparation method of the bactericidal coating comprises the following steps: ultrasonically stirring and uniformly mixing oxidized castor oil, graphite fluoride and 1/3 parts by weight of benzene-terminated polyisobutylene to obtain a mixed material A; putting alkyd resin, chlorinated rubber, propylene glycol and lecithin into a reaction kettle, and mechanically stirring until the alkyd resin, the chlorinated rubber, the propylene glycol and the lecithin are completely and uniformly mixed to obtain a mixed material B; heating the mixed material B in a reaction kettle to 70 ℃, adding dimethyl azodiisobutyrate and the residual 2/3 parts by weight of benzene-terminated polyisobutylene, mechanically stirring for 30min, adding a CuO-MnO2 composite bactericide and calcium carbonate powder, mechanically stirring for 10h, heating to 120 ℃, dropwise adding the mixed material A under the condition of mechanical stirring, continuously stirring for 8h after dropwise adding is finished, cooling to 50 ℃, adding carboxymethyl cellulose, dodecyl alcohol ester and gelatin, mechanically stirring until the materials are completely dissolved and uniformly dispersed, and cooling to room temperature to obtain the bactericidal coating.
Comparative example 4
The raw materials for preparing the bactericidal coating comprise the following components in parts by mass: 32 parts of alkyd resin, 80 parts of chlorinated rubber, 5 parts of lecithin, 9 parts of carboxymethyl cellulose, 32 parts of oxidized castor oil, 11 parts of calcium carbonate powder, 4 parts of benzene-terminated polyisobutylene, 7 parts of dodecyl alcohol ester, 4 parts of dimethyl azodiisobutyrate, 27 parts of Ag-CuO-MnO2 composite bactericide, 14 parts of graphite fluoride, 7 parts of gelatin and 30 parts of propylene glycol.
The preparation method of the Ag-CuO-MnO2 composite bactericide is the same as that of example 2.
The preparation method of the bactericidal coating comprises the following steps: putting alkyd resin, chlorinated rubber, propylene glycol, lecithin, oxidized castor oil, graphite fluoride and 1/3 parts by weight of benzene-terminated polyisobutylene into a reaction kettle, mechanically stirring until the mixture is completely and uniformly mixed, heating to 70 ℃, adding dimethyl azodiisobutyrate and the rest 2/3 parts by weight of benzene-terminated polyisobutylene, mechanically stirring for 30min, adding Ag-CuO-MnO2 composite bactericide and calcium carbonate powder, mechanically stirring for 10h, heating to 120 ℃, continuously stirring for 8h, cooling to 50 ℃, adding carboxymethyl cellulose, dodecyl alcohol ester and gelatin, mechanically stirring until the mixture is completely and uniformly dissolved and dispersed, and cooling to room temperature to obtain the bactericidal coating.
Comparative example 5
The raw materials for preparing the bactericidal coating comprise the following components in parts by mass: 32 parts of alkyd resin, 80 parts of chlorinated rubber, 5 parts of lecithin, 9 parts of carboxymethyl cellulose, 11 parts of calcium carbonate powder, 4 parts of benzene-terminated polyisobutylene, 7 parts of dodecyl alcohol ester, 4 parts of dimethyl azodiisobutyrate, 27 parts of Ag-CuO-MnO2 composite bactericide, 7 parts of gelatin and 30 parts of propylene glycol.
The preparation method of the Ag-CuO-MnO2 composite bactericide is the same as that of example 2.
The preparation method of the bactericidal coating comprises the following steps:
(1) putting alkyd resin, chlorinated rubber, benzene-terminated polyisobutylene, propylene glycol and lecithin into a reaction kettle, mechanically stirring until the alkyd resin, the chlorinated rubber, the benzene-terminated polyisobutylene, the propylene glycol and the lecithin are completely and uniformly mixed, heating to 70 ℃, adding dimethyl azodiisobutyrate, mechanically stirring for 30min, adding an Ag-CuO-MnO2 composite bactericide and calcium carbonate powder, mechanically stirring for 10h, cooling to 50 ℃, adding carboxymethyl cellulose, dodecyl alcohol ester and gelatin, mechanically stirring until the carboxymethyl cellulose, the dodecyl alcohol ester and the gelatin are completely dissolved and uniformly dispersed, and cooling to room temperature to obtain the bactericidal coating.
The bactericidal coatings prepared in examples 1 to 3 of the present invention and the coatings prepared in comparative examples 4 and 5 were respectively subjected to performance tests, and the test results are shown in table 1:
TABLE 1
As can be seen from the data in Table 1, the bactericidal coating provided by the invention has good properties of hardness, adhesion, salt spray resistance, impact resistance and the like.
The bactericidal coatings prepared in examples 1-3 of the invention and the coatings prepared in comparative examples 1-3 are respectively subjected to bacteriostatic performance detection, the bactericidal performance of the coatings is detected by a bacteriostatic circle method, and the bactericidal performance of the coatings is reflected by a bactericidal test of staphylococcus aureus, wherein the detection method comprises the following steps:
1. experimental strains: staphylococcus aureus ATCC 6538.
2. And (3) strain culture medium: nutrient agar medium, nutrient broth medium.
3. The specific experimental steps are as follows:
(1) preparing the drug sensitive tablet: qualitative filter paper is made into round paper sheet with diameter of 6mm by puncher, and is autoclaved at 121 deg.C for 30min, and then cooled. Then respectively spraying the coatings of examples 1-3 and comparative examples 1-3 on one surface of a filter paper sheet by a spray gun under the aseptic condition for 0.5mm, drying to prepare a drug sensitive sheet, preparing 5 drug sensitive sheets for each coating, preparing 5 blank sterilized paper sheets as a control group, and sterilizing a culture dish, a measuring cylinder, a syringe, a puncher, distilled water, a culture medium and the like at 121 ℃ for 30 min;
(2) preparing a bacterial liquid: placing staphylococcus aureus strains in 10ml of nutrient broth culture medium, culturing at 37 ℃ for 18h, respectively taking 1ml of culture solution, adding 9ml of 0.9% sterile sodium chloride solution, and diluting the strain solution to 1.05 x 106cfu/ml by adopting a 10-time incremental dilution method for later use;
(3) putting a nutrient agar culture medium into a culture dish to prepare a planar nutrient agar culture medium, uniformly inoculating the bacterial liquid on the plane of the nutrient agar culture medium, paving the drug sensitive tablets on the surface of the culture medium, putting the culture dish into a biochemical incubator, culturing for 24 hours at constant temperature of 37 ℃, measuring the diameter of a bacteriostatic circle of each drug sensitive tablet, and calculating the average value of the diameters of the bacteriostatic circles of each group.
The results of the experiment are shown in table 2:
TABLE 2
The experimental results show that the bactericidal coatings of the embodiments 1 to 3 have good bacteriostatic effect, and the bacteriostatic performance of the paint can be obviously improved by compounding the materials.
As shown in fig. 1 and fig. 3, the embodiment further discloses a three-dimensional treatment bed, which includes a base 1, a three-dimensional movement mechanism 3, and a bed body 3, wherein the bed body 3 is provided with the auxiliary positioning device.
As shown in fig. 3, in the three-dimensional treatment bed disclosed in this embodiment, two sides of the bed body 3 are respectively provided with a receiving cavity 26, a transverse dovetail groove 27 is provided in the receiving cavity 26, the connecting mechanism includes a slider 28 provided in the dovetail groove 27 and a telescopic rod 29 mounted on an outer side of the slider 28, a connecting hole is provided at a lower portion of the vertical plate 7, and after the outer end of the telescopic rod 29 passes through the connecting hole, the vertical plate 7 is fixed by a screw structure and a nut 30 in a matching manner; after the arc-shaped positioning plate 9 is removed, the movable plate 8 can be folded to the middle of the vertical plate 7, so that the auxiliary positioning device is integrally placed in the accommodating cavity 26.
By using the strip-shaped opening 11 arranged on the vertical plate 7, the movable plate 8 can be folded to the middle of the vertical plate 7 after the arc-shaped positioning plate 9 is removed, so that the auxiliary positioning device can be conveniently stored; when installing on the treatment bed, through the chamber 26 of accomodating that sets up in lathe bed 3 both sides, place auxiliary positioning device, make things convenient for the patient to go up and down the treatment bed.
As shown in fig. 1, the auxiliary positioning device in this embodiment is symmetrically provided with 3 sets of positioning devices at two sides of the bed 3, which can respectively correspond to the shoulder, abdomen and lower limb of the patient's body, so as to better fix the body position of the patient, and realize accurate positioning and effective radiotherapy.
The technical contents not described in detail in the present invention are all known techniques.
Claims (10)
1. A human body auxiliary positioning device for radiotherapy is characterized in that the auxiliary positioning device comprisesThe left positioning mechanism and the right positioning mechanism are arranged oppositely and are respectively arranged on two sides of the treatment bed; the left side positioning mechanism and the right side positioning mechanism are respectively provided with a vertical plate, a movable plate, an arc-shaped positioning plate and an adjusting shaft, the lower part of the vertical plate is fixed with the side of the treatment bed through a connecting mechanism, the front side of the upper part of the vertical plate is provided with a strip-shaped opening, the movable plate is installed in the strip-shaped opening, the shape of the movable plate is matched with the strip-shaped opening, strip-shaped through grooves are formed in the side surface of the upper part of the vertical plate and the side surface of the movable plate, the adjusting shaft sequentially penetrates through the strip-shaped through grooves of the vertical plate and the movable plate and then; the arc-shaped positioning plate is arranged on the front side of the inner end of the movable plate, the arc-shaped positioning plate and the movable plate are movably mounted through a connecting rod, a clamping block is mounted at the upper end of the arc-shaped positioning plate of the left positioning mechanism, a clamping groove is formed in the clamping block, a reel box is mounted at the upper end of the arc-shaped positioning plate of the right positioning mechanism, a reel is mounted in the reel box, an elastic pressing belt is wound on the reel, a clamping head is arranged at the end part of the elastic pressing belt extending out of the reel box; the adjusting shaft comprises an outer cylinder and an inner cylinder, the inner cylinder is sleeved in the outer cylinder, a first spring is arranged between the bottom surface of the outer cylinder and the bottom surface of the inner cylinder, and the outer end of the inner cylinder extends out of the outer cylinder; the side wall of the outer barrel is provided with a rectangular opening at the position of the movable plate, an elastic clamping piece protruding towards the movable plate is installed in the rectangular opening, one end of the elastic clamping piece is hinged with the side wall of the outer barrel, the other end of the elastic clamping piece can be retracted into the outer barrel and provided with a fixed block, a sliding groove is formed in the inner side of the fixed block, a supporting vertical rod is arranged in the sliding groove, one end of the supporting vertical rod is movably contacted with the sliding groove, the other end of the supporting vertical rod is fixed with the inner barrel wall; the vertical plate, the movable plate and the arc-shaped positioning plate are all provided with a sterilization coating, and the raw materials for preparing the sterilization coating comprise the following components in parts by mass: 28-36 parts of alkyd resin, 70-90 parts of chlorinated rubber, 3-6 parts of lecithin, 8-10 parts of carboxymethyl cellulose, 30-35 parts of oxidized castor oil, 9-13 parts of calcium carbonate powder, 3-5 parts of benzene-terminated polyisobutylene, 6-8 parts of dodecyl alcohol ester, 2-5 parts of dimethyl azodiisobutyrate, Ag-CuO-MnO224-30 parts of composite bactericide and graphite fluoride12-16 parts of gelatin, 5-9 parts of propylene glycol and 20-40 parts of propylene glycol.
2. The auxiliary positioning device for the human body for radiotherapy according to claim 1, wherein the sterilization coating is made of the following raw materials in parts by mass: 28 parts of alkyd resin, 70 parts of chlorinated rubber, 3 parts of lecithin, 8 parts of carboxymethyl cellulose, 30 parts of oxidized castor oil, 9 parts of calcium carbonate powder, 3 parts of benzene-terminated polyisobutylene, 6 parts of dodecyl alcohol ester, 2 parts of dimethyl azodiisobutyrate, and Ag-CuO-MnO224 parts of composite bactericide, 12 parts of graphite fluoride, 5 parts of gelatin and 20 parts of propylene glycol.
3. The auxiliary positioning device for the human body for radiotherapy according to claim 1, wherein the sterilization coating is made of the following raw materials in parts by mass: 32 parts of alkyd resin, 80 parts of chlorinated rubber, 5 parts of lecithin, 9 parts of carboxymethyl cellulose, 32 parts of oxidized castor oil, 11 parts of calcium carbonate powder, 4 parts of benzene-terminated polyisobutylene, 7 parts of dodecyl alcohol ester, 4 parts of dimethyl azodiisobutyrate, and Ag-CuO-MnO227 parts of composite bactericide, 14 parts of graphite fluoride, 7 parts of gelatin and 30 parts of propylene glycol.
4. The auxiliary human positioning device for radiotherapy according to any one of claims 1 to 3, wherein the Ag-CuO-MnO is2The preparation method of the composite bactericide comprises the following steps:
(1) weighing copper nitrate and manganese sulfate, adding a proper amount of distilled water, mixing and stirring until the copper nitrate and the manganese sulfate are completely dissolved, then adding a urea solution and a sodium chlorate solution, mixing and stirring uniformly, adding the mixed solution into a high-pressure reaction kettle, heating to 120 ℃, keeping the temperature for 1h, heating to 140 ℃, keeping the temperature for 6h, filtering, washing, drying and grinding to obtain CuO-MnO2A tubular composite material;
(2) mixing diatomite and attapulgite, grinding, sieving with a 200-mesh sieve, adding into an appropriate amount of acid solution, stirring at 60 deg.C for 2 hr, filtering, and washing to obtain mixed powder;
(3) adding distilled water into the mixed powder prepared in the step (2) to obtain super-fine powderAfter sound dispersion, adding cobalt nitrate and N-methyl pyrrolidone, stirring to dissolve and disperse uniformly, quickly injecting a sodium borohydride solution under ultrasonic oscillation and stirring conditions, stirring for 30min, dropwise adding a silver nitrate solution into the mixed solution, ultrasonically oscillating and stirring for 1h, and adding the CuO-MnO prepared in the step (1)2Stirring the tubular composite material and a proper amount of gelatin at 60 +/-5 ℃ to completely dissolve the tubular composite material and the gelatin to obtain a uniform colloidal mixed material;
(4) sealing and aging the colloidal mixed material prepared in the step (3), adding excessive alcohol into the aged colloidal mixed material, filtering to obtain a gelatin-based sponge, placing the gelatin-based sponge into liquid nitrogen for quick freezing for 3min, freeze-drying, roasting at the high temperature of 500 ℃ for 6h, cooling to room temperature, and grinding to obtain a mixed material;
(5) adding the mixed material obtained in the step (4) into an acetone solution, uniformly dispersing, adding sorbic acid, stirring for 1h, filtering and drying to obtain the Ag-CuO-MnO2A composite bactericide.
5. The auxiliary positioning device for radiotherapy as claimed in claim 1, wherein the elastic clip has a through hole at its center, a movable post is disposed in the through hole, a horizontal second spring is mounted on the end of the movable post inside the elastic clip, and the inner end of the second spring is fixed to the sidewall of the outer cylinder; the movable column is fixedly connected with the connecting end of the second spring, the other end of the metal pull rope penetrates through the side wall of the outer barrel and then is fixed with the lower portion of the inner barrel, and the pull rope is located below the supporting vertical rod.
6. The auxiliary positioning device for radiotherapy as claimed in claim 5, wherein the inner wall of the strip-shaped through slot of the movable plate is provided with a plurality of positioning holes at intervals, and the outer end of the movable column can extend into the positioning holes; the through hole and the movable column are both conical, and the diameter of the outer end of the movable column is larger than that of the inner side of the through hole.
7. The auxiliary positioning device for radiotherapy as claimed in claim 1, wherein said elastic clip is symmetrically provided with 2 sets on the side wall of the outer cylinder; the first spring sleeve is arranged on the vertical guide rod in a sleeved mode, the lower end of the guide rod is fixed to the inner bottom of the outer cylinder, and the upper end of the guide rod extends into the inner cylinder.
8. A three-dimensional treatment bed, comprising a base, a three-dimensional motion mechanism and a bed body, wherein the bed body is provided with an auxiliary positioning device as claimed in any one of claims 1 to 7.
9. The three-dimensional treatment bed according to claim 8, wherein the two sides of the bed body are respectively provided with a containing cavity, a transverse dovetail groove is arranged in the containing cavity, the connecting mechanism comprises a sliding block arranged in the dovetail groove and a telescopic rod arranged outside the sliding block, the lower part of the vertical plate is provided with a connecting hole, and after the outer end of the telescopic rod passes through the connecting hole, the vertical plate is fixed by matching a threaded structure and a nut; after the arc-shaped positioning plate is removed, the movable plate can be folded to the middle of the vertical plate, so that the auxiliary positioning device is integrally placed in the accommodating cavity.
10. The three-dimensional treatment bed according to claim 9, wherein the auxiliary positioning device is symmetrically provided with 2-4 sets on two sides of the bed body.
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