CN105079973A - Prone body position fixing device for radiotherapy - Google Patents
Prone body position fixing device for radiotherapy Download PDFInfo
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- CN105079973A CN105079973A CN201510612847.XA CN201510612847A CN105079973A CN 105079973 A CN105079973 A CN 105079973A CN 201510612847 A CN201510612847 A CN 201510612847A CN 105079973 A CN105079973 A CN 105079973A
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- slide block
- pedestal
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- body position
- radiotherapy
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Abstract
The invention discloses a prone body position fixing device for radiotherapy. The prone body position fixing device comprises a base and a slide block. The slide block is arranged on the base and moves along the base. The slide block is provided with recessed troughs which match partial body portions of a patient. In use of the prone body position fixing device, a patient can lie on the prone body position fixing device for radiotherapy according to the prone body position (face is oriented downward); and hereon, some body portions of the patient are placed in the recessed troughs; and furthermore the patient is fixed on the slide block (through an external device or buckling member), thereby facilitating subsequent disease treatment (such as radiotherapy). Furthermore the slide block according to the invention can randomly slide on the base, and therefore the position of the slide block is adjusted according to the body heights of different patients, thereby fixing the patients with different body shapes, and making the patients with different body shapes obtain a same comfortable feeling in lying on the slide block.
Description
Technical field
The present invention relates to a kind of radiotherapy prone body position fixture.
Background technology
Clinically when carrying out radiotherapy in the treatment to patient, body position fixing device need be adopted to be fixed at each position of patient body, moving by according to position when preventing from irradiating, thus reducing the exposure dosage of normal structure, guaranteeing that target area is fully irradiated.The selection of radiotherapy position, should ensure that patient obtains correct treatment position, guarantee that in irradiation process, position remains unchanged again, meanwhile, also will consider the repeatability of at every turn putting position.
The selection of radiotherapy position is very crucial, and Postural immobilization mode has ventricumbent position or dorsal position usually, and the first-selected ventricumbent position of the radiotherapy position of part cancer, as rectal cancer, intraspinal tumor etc.The ventricumbent position fixture of current use cannot adjusting size, and can not be adjusted to proper states according to the actual height of patient, build, comfort level is lower simultaneously, and the repeatability of each pendulum position is poor.
Such as: Chinese utility model patent, application number is 201220366144.5, this utility model discloses a kind of compound body fixture, comprise plate body, plate body is divided into head, shoulder and body from top to bottom, it is characterized in that plate body is provided with facial film fixture, head shoulder film fixture and body film fixture, facial film fixture is arranged on the head of plate body, head shoulder film fixture is arranged on head and the shoulder of plate body, body film fixture is arranged on the body of plate body, and plate body is provided with position line.This invention by changing different thermoplastic film, can meet the radiotherapy demand at the multiple positions such as patients head, shoulder and body.
By being the understanding of utility model technical scheme of 201220366144.5 to application number, can learn, this utility model is only change thermoplastic film, and cannot regulate the size of fixture itself, cannot be applicable to the patient of different height, build.Meanwhile, the program is only only applicable to the fixing of dorsal position, cannot be applicable to prone fixing.
Summary of the invention
The object of the invention is to provide a kind of radiotherapy prone body position fixture, at least one to solve the problems of the technologies described above.
According to an aspect of the present invention, provide a kind of radiotherapy prone body position fixture, comprise pedestal and slide block, slide block is located on pedestal, and moves along pedestal, and slide block is provided with the Baltimore groove matched with the body position of patient.
When using of the present invention, patient can prostrate (facing down) in radiotherapy prone body position fixture of the present invention, now, the body position of patient is placed in Baltimore groove, and patient is fixed on slide block by (utilizing external device (ED) or buckling piece), thus facilitate follow-up disease treatment (as: radiotherapy).In addition, slide block in the present invention can slide arbitrarily on pedestal, therefore, can come the position of adjusting slider according to the height of different patient, thus the present invention can be fixed for the patient of different building shape, can make the patient lies prone of different building shape on slide block, have identical comfort.
In some embodiments, pedestal is provided with slide rail, and slide block is moved along pedestal by slide rail.Thus, by arranging slide rail, can make that slide block is easier to be moved along pedestal.
In some embodiments, slide block comprises two sliding parts and base, and the base of slide block is located on slide rail; sliding part is located on base; two sliding parts are coupled together by drive link, and drive link drives two sliding parts mutually close up or open, and two sliding parts form Baltimore groove.Thus, can make mutually to open between two sliding parts or close up by drive link, thus the size can carrying out adjusting slider according to the width of patient positions (that is: can regulate the relative position of two sliding parts herein, reach the object of adjusting slider size), different patients can be met, make the patient lies prone of difference (width) build on slide block, have identical comfort.
In some embodiments, the quantity of slide block is four, four slide blocks are arranged in order from the bottom up, be respectively lower limb slide block, pelvic cavity slide block, chest slide block and head upper limb slide block, two sliding parts of lower limb slide block form the Baltimore groove mated with patient's lower limb, two sliding parts of pelvic cavity slide block form the Baltimore groove mated with patient's pelvic cavity, two sliding parts of chest slide block form the Baltimore groove mated with patient chest, and two sliding parts of head upper limb slide block form the Baltimore groove mated with patient's upper limb and head.Thus, when patient lies prone is on sliding part, the Baltimore groove on each sliding part and the body part of patient match, and patient can be allowed to feel more comfortable.
In some embodiments, pelvic cavity slide block, chest slide block and head upper limb slide block include fixture, fixture is located in the middle of two sliding parts, and the sliding part of head upper limb slide block is provided with four slip columns, and four slip columns move along the sliding part of head upper limb slide block.Thus, fixture can withstand patient body, allows ventricumbent position is convenient carries out.Lain in by the upper limb of patient in the space of four slip columns formation, the ancon of upper limb is resisted against on the inwall of sliding part, regulates the position of slip column, just upper limb can be fixed.
In some embodiments, also comprise two groups of slide block buckling pieces, wherein one group of buckling piece is located on chest slide block, and another group buckling piece is located on pelvic cavity slide block.Thus, patient, on slide block, can be fixed by buckling piece by patient lies prone, prevents patient's arbitrarily movement in radiotherapy in the treatment process, and causes the problems such as radiotherapy irradiated site is inaccurate.
In some embodiments, pedestal comprises the first pedestal and the second pedestal, first pedestal and the second pedestal are hinged, lower limb slide block is located on the second pedestal, pelvic cavity slide block, chest slide block and head upper limb slide block are all located on the first pedestal, one end of first pedestal is provided with handle, and the other end is also provided with handle.Thus, rotate the second pedestal, the second pedestal can be overturn and cover on the first pedestal, utilize handle entirety of the present invention can be withdrawn, the object arranging the first pedestal and the second pedestal can reduce entire length of the present invention, facilitates handling.
In some embodiments, the moving direction along sliding part on base is provided with scale, and the moving direction along slide block on pedestal is provided with scale.Thus, arrange scale and conveniently can record different patient when using of the present invention, the position at each slide block place and sliding part opening and closing degree, when patient reuses, can regulate the position of each slide block and the opening and closing degree of slide block by the position of recording.
In some embodiments, also comprise Fastener, Fastener is located on slide block, and Fastener blocks slide block.Thus, when slide block is adjusted to suitable position, Fastener can slide by anti-limited slip block voluntarily, prevents patient from sliding on pedestal, and when preventing patient from irradiating by radiotherapy further, body position moves.
In some embodiments, Fastener comprises clamping spanner and clamping block, and clamping spanner is located on base, and one end of clamping spanner is cam, and cam is connected with sliding shoe, when spanner rotates, cam promotion clamping block against or away from slide rail.Thus, cam is fixed on by rotating shaft also can around base rotation on base, and when the cam of spanner turns an angle, cam, due to its special construction, can promote clamping block and move, and makes clamping block tightly against living slide rail, and base cannot slide.Certainly, when rotating spanner again, cam promotes clamping block away from slide rail, thus base can slide along slide rail again.
Accompanying drawing explanation
Fig. 1 is the structural representation of the radiotherapy prone body position fixture of one embodiment of the present invention;
Fig. 2 is the structural representation of the lower limb slide block of the prone body position of radiotherapy shown in Fig. 1 fixture;
Fig. 3 is the structural representation of the pelvic cavity slide block of the prone body position of radiotherapy shown in Fig. 1 fixture;
Fig. 4 is the structural representation of the chest slide block of the prone body position of radiotherapy shown in Fig. 1 fixture;
The structural representation of (pelvic cavity slide block) buckling piece that Fig. 5 is the prone body position of radiotherapy shown in Fig. 1 fixture;
The structural representation of (chest slide block) buckling piece that Fig. 6 is the prone body position of radiotherapy shown in Fig. 1 fixture;
The Fastener of Fig. 7 for the prone body position of radiotherapy shown in Fig. 1 fixture and the structural representation of slide rail.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 ~ Fig. 7 schematically shows the structure of the radiotherapy prone body position fixture of one embodiment of the present invention.
Effect of the present invention is fixed patient lies prone position, and according to different patients, carry out regulating each position of slide block 2 on pedestal 1, and the size of the Baltimore groove 27 of slide block 2, thus the patient of different height, different parts width (i.e. different building shape) can be applied to.
As shown in the figure, a kind of radiotherapy prone body position fixture, comprises pedestal 1 and slide block 2.The quantity of slide block 2 can adjust as required, can be two, three, five etc., is preferably four in the present invention.Four slide blocks 2 form Fig. 1 shown device with pedestal 1.Each slide block 2 can be made into as a whole, and during patient in order to satisfied different height, entirety must be divided at least two parts, and therefore, at least two parts in this situation also should be considered as at least two slide blocks 2.
As shown in Figure 1, slide block 2 has four, for convenience of description, four slide blocks 2 called after lower limb slide block 21, pelvic cavity slide block 22, chest slide block 23 and head upper limb slide block 24 respectively, lower limb slide block 21, pelvic cavity slide block 22, chest slide block 23 and head upper limb slide block 24 are arranged in order from the bottom up and are arranged on pedestal 1.Further, each slide block 2 is substantially identical with the connected mode of pedestal 1.
As depicted in figs. 1 and 2, be described further with (lower limb slide block 21) shown in Fig. 2 annexation to slide block and pedestal 1 below, slide block 2 comprises two sliding parts 25 and base 26, and sliding part 25 is installed on base plate 26, can slide along base 26.Simultaneously, the lower end of base 26 forms draw-in groove, pedestal 1 is mounted with slide rail 11, base 26 to be stuck on the slide rail 11 of pedestal 1 by draw-in groove and can to move along slide rail 11, and slide block 2 is installed on base plate 26, therefore, sliding part 25 also can slide along with base 26 and slide, thus base 26 can move along the slide rail 11 of pedestal 1 with adjusting slider 2 (sliding part 25) position on pedestal 1.
Or above-mentioned base 26 also can be placed on pedestal 1 by the mode snapped in, namely the position only needing adjusting base 26 to snap in can change the position of adjusting slider 2 on pedestal 1.
Simultaneously, sliding part 25 also can move relative to base 26, as shown in Figure 2, two sliding parts 25 are mutually opened by cylindrical drive link 251 or close up (namely the direction of motion of two sliding parts 25 is contrary), concrete structure is as follows, as shown in Figure 2, the centre position being arranged on the base 26 on slide rail 11 forms projection (not shown), projection forms cylindrical hole, on two sliding parts 25, form columniform screwed hole simultaneously, drive link 251 is successively through the screwed hole of left side sliding part 25, the screwed hole of projection through hole and the right sliding part 25, that is to say that left side sliding part 25 and the right sliding part 25 are all arranged on projection by drive link, a left side for drive link 251, the right side is respectively provided with a convex pearl 2511.When drive link 251 rotates, slide in the tapped through hole of the convex pearl in the left side 2511, the convex pearl 2511 in the right on the left side sliding part 25, the right sliding part 25 respectively.Only need the rotation direction of the tapped through hole of left side sliding part 25 and the tapped through hole of the right sliding part 25 contrary, when drive link 251 just can be made to rotate, the transmission direction of two sliding parts 25 is contrary, and namely two sliding parts 25 mutually open or mutually close up.
The mode of above-mentioned sliding part 25 movement on base plate 26 can be screw rod transmission, drive link 251 is only needed to be replaced with in screw mandrel, the thread rotary orientation of screw mandrel the right and left is contrary, and two sliding parts 25 match respectively at screw thread on the right of screw mandrel left side screw thread and screw mandrel.
Typically, during use, patient lies prone is on each slide block 2, that is to say that the lower limb of patient are placed on lower limb slide block 21, pelvic cavity is positioned on pelvic cavity slide block 22, chest is positioned on chest slide block 23 and head upper limb is positioned on head upper limb slide block 24, this just needs when making each slide block 2, two sliding parts 25 of slide block 2 need formation Baltimore groove 27, the shape of this Baltimore groove 27 is mated mutually with the shape at each position of patient, namely the structure of each slide block 2 said is basically identical above (also can have some difference, such as: lower limb slide block 21 adopts drive link 251, pelvic cavity slide block 22 adopts screw mandrel).But in order to coordinate the position of patient, the shape of each slide block 2 is each variant.Specific as follows: two sliding parts 25 of lower limb slide block 21 form the Baltimore groove 27 mated with patient's lower limb, two sliding parts 25 of pelvic cavity slide block 22 form the Baltimore groove 27 mated with patient's pelvic cavity, use to meet male simultaneously, shrinkage pool 221 (shrinkage pool that this shrinkage pool fixture 211 is formed) can be set on Baltimore groove 27, conveniently place genital orgnas,male; Two sliding parts 25 of chest slide block 23 form the Baltimore groove 27 mated with patient chest, conveniently women uses, shrinkage pool 231 (as shown in Figure 4 shrinkage pool be the shrinkage pool that two sliding parts 25 are formed) herein can be set on Baltimore groove 27, conveniently place female breast, two sliding parts 25 of head upper limb slide block 24 form the Baltimore groove 27 mated with patient's upper limb (comprising face).
Further, in order to the better upper limb by patient is fixed on head upper limb slide block 24, sliding part 25 on head upper limb slide block 24 can install four slip columns 241, four slip columns 241 connect (shown in Fig. 1 between two, the line direction of the slip column 241 connected between two is perpendicular to length direction of the present invention), the upper limb of patient is only needed to lift over the top of the head, and be combined, be positioned in the space of four slip columns 241 formation, the ancon of upper limb is resisted against on the inwall of sliding part 25, by regulating the position of slip column 241, the upper limb of patient can be stuck in the space that four slip columns 241 are formed and fixing, facilitate successive treatment.
In order to patient can be good in prostrate the present invention, as shown in Figure 1, Figure 3 and Figure 4, in the middle of middle middle two sliding parts 25 being provided with fixture 211 and head upper limb slide block 24 of two sliding parts 25 being provided with fixture 211, chest slide block 23 of two sliding parts 25 of pelvic cavity slide block 22, fixture 211 is installed, patient lies prone on the invention time, the health of above-mentioned fixture 211 couples of patients plays holder role, makes more firm the fixing on the invention of health.
When patient lies prone is on each slide block 2, need to utilize outside thing patient to be fixed, therefore, the present invention also sets up slide block buckling piece 3, and buckling piece 3 has passage, utilizes buckling piece 3 patient to be fixed, and can be breathed freely by passage.In the present embodiment, the quantity of slide block buckling piece 3 is two, be fastened on pelvic cavity slide block 22 and chest slide block 23 place respectively, buckling piece 3 adopts thermoplastic film to make, two buckling piece 3 profiles and structure difference to some extent, as shown in Figure 4 to 7, first, be described for the buckling piece 3 being fastened on pelvic cavity slide block 22, before use, buckling piece 3 is the formation state shown in Fig. 6, and left and right, lower three positions of buckling piece 3 are formed with groove 31, patient lies prone on each slide block 2 after, buckling piece 3 to be soaked in about 75 DEG C water 4 ~ 5 minutes, the transparent softening rear taking-up of thermoplastic film is by being pressed in patient chest back and pelvic cavity back, by a left side for buckling piece 3, right, the groove 31 of lower three positions puts into the corresponding position to pelvic cavity slide block 22 as shown in Figure 1, a left side for pelvic cavity slide block 22, right sliding part 25 is equipped with hole 32, the groove 31 on the right of buckling piece 3 puts into the hole 32 on the right to right sliding part 25, and side, hole 32 on the right also forms another through hole, can the right-hand member of buckling piece 3 be fixed in hole 32 by strip catch, in strip catch insertion groove 31, block the groove 31 of buckling piece 3, in like manner, other positions of buckling piece 3 also can be fixed.After fixing, wait for that buckling piece 3 is cooled to indoor temperature and plastic, and block patient, patient is fixed, facilitates the carrying out of subsequent step.
In above-mentioned buckling piece 3, the position of the groove 31 on buckling piece 3 is not limited in shown in Fig. 5, also can be shown in Fig. 6, or the position of groove 31 also can be other, shape with time slot 31 also can be multiple, time in the hole 32 only needing groove 31 to snap onto sliding part 25, groove 31 can be fixed by catch, and groove 31 can not be extracted out voluntarily.Even, can not need groove 31, any mode that the periphery of buckling piece 3 can be made to be fixed on slide block all can realize object, that is to say the chest and the pelvic cavity position that make buckling piece 3 fix patient.
Conveniently record different patient when using of the present invention, the position at each slide block 2 place and sliding part 25 opening and closing degree, can arrange graduation mark (not shown) along slide block 2 moving direction on pedestal 1.Meanwhile, on base plate 26 graduation mark (not shown) is set along on the direction of sliding part 25 movement.Pass through graduation mark, record scale when each patient uses, facilitate each follow-up slide block 2 adjustment operation, simultaneously, in order to record the position of upper limb, also on the sliding part 25 of head upper limb slide block 24, be provided with graduation mark (not shown), this graduation mark is arranged along the direction of slip column 241 movement, to record the position of slip column 241 movement.
In the present embodiment, conveniently handling of the present invention, pedestal 1 is divided into the first pedestal 12 and the second pedestal 13, first pedestal 12 and the second pedestal 13 are hinged, lower limb slide block 21 is fixed on the second pedestal 13, pelvic cavity slide block 22, chest slide block 23 and head upper limb slide block 24 are all fixed on the first pedestal 12, and one end of the first pedestal 12 is provided with handle 121, and the other end is also provided with handle 121.Overturn the second pedestal 13, the second pedestal 13 can be covered on the first pedestal 12, be equivalent to the length shortening entirety of the present invention, facilitate handling.
As shown in Figure 1 and Figure 7, because slide block 2 can slide on slide rail 11, therefore, set a Fastener 4, utilize Fastener 4 to be blocked by slide block 2.As shown in Figure 1, Fastener 4 is divided into two parts, rotating part (namely clamping spanner 41) and gripping part (i.e. clamping block 42), clamping spanner 41 contacts with each other with clamping block 42, clamping spanner 41 is cam with clamping block 42 contact position, and centre position and the base 26 of cam are rotationally connected, when rotating clamping spanner 41 to certain angle, Fastener 4 can be made tightly to prop up slide rail 11, and making cannot relative motion between base 26 and slide rail 11.When again rotating clamping spanner 41, the cam driven clamping block 42 of clamping spanner 41 resets, and clamping block 42 is not contacted with slide rail 11, now, again can adjusting base 26, make base 26 move to the position of needs along slide rail 11.
Occupation mode of the present invention is specific as follows: patient lies prone is at each slide block 2 place, and the length according to patient regulates each slide block 2, according to the width of patient positions, regulates the sliding part 25 of each slide block 2.After adjustment completes, two buckling pieces 3 to be soaked in about 75 DEG C water 4 ~ 5 minutes, the transparent softening rear taking-up of thermoplastic film is by being pressed in patient chest back and pelvic cavity back, when the temperature of buckling piece 3 is reduced to room temperature, patient can be fixed, then carry out follow-up treatment: as tumour radiotherapy etc.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1. a radiotherapy prone body position fixture, it is characterized in that, comprise pedestal (1) and at least two slide blocks (2), described slide block (2) is located on described pedestal (1), and mobile along described pedestal (1), described slide block (2) is provided with the Baltimore groove (27) matched with the body position of patient.
2. radiotherapy reset prone body position fixture according to claim 1, it is characterized in that, described pedestal (1) is provided with slide rail (11), and described slide block (2) is mobile along pedestal (1) by slide rail (11).
3. radiotherapy prone body position fixture according to claim 2, it is characterized in that, described slide block (2) comprises two sliding parts (25) and base (26), the base (26) of described slide block (2) is located on described slide rail (11), described sliding part (25) is located on described base (26), described two sliding parts (25) are coupled together by drive link (251), described drive link (251) drives two sliding parts (25) mutually close up or open, described two sliding parts (25) form described Baltimore groove (27).
4. radiotherapy prone body position fixture according to claim 3, it is characterized in that, the quantity of described slide block (2) is four, each slide block (2) is installed pair of sliders (25), four slide blocks (2) are arranged in order from the bottom up, be respectively lower limb slide block (21), pelvic cavity slide block (22), chest slide block (23) and head upper limb slide block (24), the Baltimore groove (27) that two sliding parts (25) formed of described lower limb slide block (21) mates with patient's lower limb, the Baltimore groove (27) that two sliding parts (25) formed of described pelvic cavity slide block (22) mates with patient's pelvic cavity, the Baltimore groove (27) that two sliding parts (25) formed of described chest slide block (23) mates with patient chest, two sliding parts (25) of described head upper limb slide block (24) form the Baltimore groove (27) with patient's upper limb and fit heads.
5. radiotherapy prone body position fixture according to claim 4, it is characterized in that, described pelvic cavity slide block (22), chest slide block (23) and head upper limb slide block (24) all also comprise fixture (211), described fixture (211) is located in the middle of described two sliding parts (25), the sliding part (25) of described head upper limb slide block (24) is provided with four slip columns (241), and described four slip columns (241) are mobile along the sliding part (25) of head upper limb slide block (24).
6. radiotherapy prone body position fixture according to claim 5, it is characterized in that, also comprise two groups of slide block buckling pieces (3), wherein one group of buckling piece (3) is located on described pelvic cavity slide block (22), and another group buckling piece (3) is located on described chest slide block (23).
7. the radiotherapy prone body position fixture according to any one of claim 1 ~ 6, it is characterized in that, described pedestal (1) comprises the first pedestal (12) and the second pedestal (13), described first pedestal (12) and the second pedestal (13) are hinged, described lower limb slide block (21) is located on described second pedestal (13), described pelvic cavity slide block (22), chest slide block (23) and head upper limb slide block (24) are all located on described first pedestal (12), one end of described first pedestal (12) is provided with handle (121), the other end is also provided with handle (121).
8. radiotherapy prone body position fixture according to claim 7, it is characterized in that, described base (26) is provided with scale along the moving direction of sliding part (25), described pedestal (1) is provided with scale along the moving direction of slide block (2).
9. the radiotherapy prone body position fixture according to any one of claim 3 ~ 6, it is characterized in that, also comprise Fastener (4), described Fastener (4) is located on described base (1), and described Fastener (4) blocks described slide block (2).
10. radiotherapy prone body position fixture according to claim 9, it is characterized in that, described Fastener (4) comprises clamping spanner (41) and clamping block (42), described clamping spanner (41) is located on described base (26), one end of described clamping spanner (41) is cam, cam is connected with clamping block (42), when described clamping spanner (41) is rotated, cam promote described clamping block (42) against or away from described slide rail (11).
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| CN201510612847.XA CN105079973B (en) | 2015-09-23 | 2015-09-23 | Radiotherapy prone body position fixing device |
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| CN201510612847.XA CN105079973B (en) | 2015-09-23 | 2015-09-23 | Radiotherapy prone body position fixing device |
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| CN105079973B CN105079973B (en) | 2017-11-24 |
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| CN108553239A (en) * | 2018-05-10 | 2018-09-21 | 柳州市人民医院 | Prone-position ventilation patient's neonychium |
| CN109172083A (en) * | 2018-10-10 | 2019-01-11 | 宁康 | A kind of cerebral injury rehabilitation training auxiliary instrument |
| CN110478629A (en) * | 2019-08-09 | 2019-11-22 | 四川省肿瘤医院 | A kind of regulation device of radiotherapy position |
| CN113082557A (en) * | 2021-05-08 | 2021-07-09 | 西安交通大学医学院第一附属医院 | Multifunctional fixing device for positioning and positioning radiotherapy of breast, chest and abdomen tumors of head and neck |
| CN115281993A (en) * | 2022-10-09 | 2022-11-04 | 北京彼岸鸿侨医疗科技有限公司 | Can regulate and control prostrate treatment human ecological cover |
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|---|---|
| CN105079973B (en) | 2017-11-24 |
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