CN109107054A - A kind of head fixing device for sitting posture radiotherapy - Google Patents

A kind of head fixing device for sitting posture radiotherapy Download PDF

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Publication number
CN109107054A
CN109107054A CN201810874284.5A CN201810874284A CN109107054A CN 109107054 A CN109107054 A CN 109107054A CN 201810874284 A CN201810874284 A CN 201810874284A CN 109107054 A CN109107054 A CN 109107054A
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CN
China
Prior art keywords
fixed support
lead screw
chin
head
adjustment mechanism
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Granted
Application number
CN201810874284.5A
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Chinese (zh)
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CN109107054B (en
Inventor
张永德
杨智康
姜金刚
刘博健
张贯
张贯一
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Harbin University of Science and Technology
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Harbin University of Science and Technology
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Priority to CN201810874284.5A priority Critical patent/CN109107054B/en
Publication of CN109107054A publication Critical patent/CN109107054A/en
Application granted granted Critical
Publication of CN109107054B publication Critical patent/CN109107054B/en
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00Radiation therapy
    • A61N5/10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00Radiation therapy
    • A61N5/10X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N2005/1092Details
    • A61N2005/1097Means for immobilizing the patient

Abstract

A kind of head fixing device for sitting posture radiotherapy, including backup plate, the fixed support mounting rack of head, the fixed support mounting rack adjustment mechanism of head, the fixed support adjustment mechanism of head circumference, the fixed support adjustment mechanism in the crown, the fixed support of chin, the fixed support adjustment mechanism of chin, the present invention is during patient radiation treats, use the fixed support mounting rack adjustment mechanism of the head being mounted on backup plate, the fixed support of the fixed support of head circumference and the crown is adjusted in the fixed support adjustment mechanism of the fixed support adjustment mechanism of head circumference and the crown, fixing head, the fixed restitope of chin is adjusted using the fixed support adjustment mechanism of chin to set, patient's chin is fixed, the present invention can carry out head to the cancer patient using sitting posture radiotherapy and fix, radiotherapy chair is cooperated to adjust patient's pose, keep radiotherapy more accurate, to avoid ray damage normal tissue.

Description

A kind of head fixing device for sitting posture radiotherapy
Technical field
The present invention discloses a kind of head fixing device for sitting posture radiotherapy, and in particular to radiating medical instrument neck Domain.
Background technique
World Health Organization's latest data is shown, to before the year two thousand twenty, global cancer morbidity will increase by 50%, i.e., every year will Newly-increased 15,000,000 cancer patients.And current every dead 5 people in China, that is, there is 1 people to die of cancer.Cancer has become threat human health One of the main reason for.The main method for the treatment of cancer has chemotherapy, radiotherapy, three kinds of traditional operation, wherein proton heavy ion radiotherapy Received with its unique advantage and good curative effect by more and more doctors, patient.For the proton weight of head and neck neoplasm Ion radiation therapy, sitting posture are best radiotherapy position, currently, also inadequate for the less function for the treatment of chair of sitting posture radiotherapy in the market It is perfect, and the patient will feel uncomfortable during treatment for the fixed thermoplastic film technique for fixing used in head, and operation is not square Just.It can be mounted on treatment seat back portion therefore, it is necessary to a kind of, the fixed device in head is carried out to cancer patient's sitting posture radiotherapy.
Summary of the invention
The object of the present invention is to provide a kind of head fixing devices for sitting posture radiotherapy, are controlled with solving sitting posture radiation The fixation problem of patients head during treatment.
The present invention is a kind of head fixing device for sitting posture radiotherapy, including backup plate 1,11 and of lead screw link block 13, the fixed support mounting rack adjustment mechanism 12 of head, star-like handle 121, lead screw install supporting block 122 and 126, shaft coupling 123, silk The fixed support mounting rack 2, the crown of thick stick 124, protective cover 125, chin strap support arm 14 and 16, chin strap installation and adjustment block 15, head The fixed support adjustment mechanism 21, hand-adjusting type handle lead screw 211, special bearing (ball) cover 212, bearing 213, feed screw nut 214, the crown in portion The fixed support adjustment mechanism 22 and 23 of support 215, head circumference, head circumference fixed support 221, feed screw nut 222, bearing 223, hand-adjusting type are fixed by portion The fixed support 24 of handle lead screw 224, special bearing (ball) cover 225, occiput, threads of lead screw hole 25, lead screw link block 26, chin are fixed The fixed support 31 of adjustment mechanism 3, chin, the fixed support of chin is ask to adjust box-like guide rail 32, hand-adjusting type handle lead screw 33, adjustment gear 34, the fixed support adjusting tooth stick 35, chin strap support base 36, adjusting knob 37, feed screw nut 38 of chin, it is characterised in that: The lead screw link block 11 and 13 is mounted on 1 lower back two sides of backup plate, the fixed support mounting rack adjustment mechanism 12 of head is installed Above 1 dorsal midline of backup plate, supporting block 122 and 126 is mounted on 1 dorsal midline of backup plate, star-like handle 121 is worn for lead screw installation Crossing lead screw installation, supporting block 122 is connected with one end of shaft coupling 123, the other end of shaft coupling 123 is connected with 124 end of lead screw It connects, the other end of lead screw 124 is mounted in lead screw installation supporting block 126 across bearing, protective cover 125 is mounted on silk by screw Thick stick installation supporting block 122 and 126, chin strap support arm 14 and 16 are mounted on the lower front two sides of backup plate 1, chin strap installation is adjusted One end of locking nub 15 is connect by bolt with 16 end of chin strap support arm can rotate around bolt, chin strap installation and adjustment block 15 The other end connect with chin strap support arm 14 by movable bolt, head is fixed that mounting rack 2 is ask to pass through the peace of lead screw link block 26 It can be moved up and down on backup plate 1, threads of lead screw hole 25 is matched with lead screw 124, the fixed support adjustment mechanism 21 of overhead is installed Fixed support 2 lower part of mounting rack of head is mounted in fixed support 2 top of mounting rack of head, the fixed support adjustment mechanism 22 and 23 of head circumference Upper and lower bar of arc support fixed support adjustment mechanism 3 is mounted on chin strap support arm 14 and 16.
Preferably, the fixed support adjustment mechanism 21 of the overhead includes hand-adjusting type handle lead screw 211, special bearing end The fixed support 215 of lid 212, bearing 213, feed screw nut 214, overhead, hand-adjusting type handle lead screw 211 pass through special bearing (ball) cover 212 fix the circular hole secure fit on support 2 top of mounting rack, special axis with the cooperation of 213 internal diameter of bearing, 213 outer diameter of bearing and head Bearing 213 is fixed in the circular hole that socket end lid 212 is inserted into fixed support 2 top of mounting rack of head, 214 internal diameter of feed screw nut and hand Mode handle lead screw 211 matches, overhead fixes 215 upper circular hole of support and 214 lower part secure fit of feed screw nut.
Preferably, the fixed support adjustment mechanism 22 of the head circumference includes head circumference fixed support 221, feed screw nut 222, bearing 223, hand-adjusting type handle lead screw 224, special bearing (ball) cover 225, hand-adjusting type handle lead screw 224 pass through special bearing (ball) cover 225 with The cooperation of 223 internal diameter of bearing, 223 outer diameter of bearing and the circular hole secure fit in the fixed support 2 arc support of mounting rack of head, special bearing Bearing 223 is fixed in the circular hole that end cap 225 is inserted into the fixed support 2 arc support of mounting rack of head, feed screw nut 222 and hand adjustment 224 internal diameter of formula handle lead screw matches, the structure of the fixed support adjustment mechanism 23 of head circumference and the knot of the fixed support adjustment mechanism 22 of head circumference Structure is identical.
Preferably, the fixed support adjustment mechanism 3 of the chin includes that chin fixes support 31, chin fixes support and adjusts box-like Guide rail 32, hand-adjusting type handle lead screw 33, adjustment gear 34, chin fixed support adjusting tooth stick 35, are adjusted chin strap support base 36 Knob 37, feed screw nut 38 are saved, the both ends of chin strap support base 36 are connected on chin strap support arm 14 and 16, hand adjustment Formula handle lead screw 33 passes through chin strap support base 36 and the internal diameter cooperation of feed screw nut 38, the fixed support of chin adjust box-like guide rail The major diameter fit of circular hole among 32 lower parts and feed screw nut 38 and can be before and after 36 left and right sides guide rail of chin strap support base It is mobile, the fixed support adjusting tooth stick 35 of chin be nested in the fixed support of chin adjust in box-like guide rail 32 can up and down adjustment, adjust rotation Button 37 is mounted on outside the fixed support adjusting box-like guide rail 32 of chin, adjustment gear 34 is mounted on the fixed support of chin and adjusts box-like guide rail 32 inside fix the rack gear cooperation of support 35 side of adjusting tooth stick with chin, the fixed support 31 of chin is fixedly mounted on the fixed support of chin The top of adjusting tooth stick 35.
The utility model has the advantages that
The present invention fully takes into account the size difference of patient, using the fixed support mounting rack adjustment mechanism of head to the fixed support peace of head It shelves and is adjusted, meet the needs of different height patients, the fixed support adjustment mechanism of overhead on the fixed support mounting rack of head The flexible of the fixed support of overhead and the fixed support of head circumference can be adjusted by star-like handle with the fixed support adjustment mechanism of head circumference, chin is solid Surely support adjustment mechanism can adjust longitudinal separation of the fixed support of chin relative to patient by star-like handle, pass through adjusting knob tune The height for saving the fixed support of chin, adapts to the patient of different head dummy sizes, and realization is completely fixed patients head.
Detailed description of the invention:
The present invention is done by following specific implementations and attached drawing to be described in detail for ease of explanation,.
Attached drawing 1 is overall structure diagram of the invention.
Attached drawing 2 is the structural schematic diagram of the fixed support mounting rack adjustment mechanism of backup plate and head of the present invention.
Attached drawing 3 is the fixed support mounting rack structural schematic diagram of head of the present invention.
Attached drawing 4 is the fixed support adjustment mechanism structural schematic diagram of head circumference of the present invention.
Attached drawing 5 is the fixed support adjustment mechanism structural schematic diagram of head circumference of the present invention.
Attached drawing 6 is the fixed support adjustment mechanism structural schematic diagram of chin of the present invention.
In figure: 1, backup plate, 11 and 13, lead screw link block, 12, the fixed support mounting rack adjustment mechanism of head, 121, star-like Hand, 122 and 126, lead screw install supporting block, 123, shaft coupling, 124, lead screw, 125, protective cover, 14 and 16, chin strap support Arm, 15, chin strap installation and adjustment block, 2, the fixed support mounting rack of head, 21, the fixed support adjustment mechanism of overhead, 211, hand-adjusting type Handle lead screw, 212, special bearing (ball) cover, 213, bearing, 214, feed screw nut, 215, the fixed support of overhead, 22 and 23, head circumference Fixed support adjustment mechanism, 221, the fixed support of head circumference, 222, feed screw nut, 223, bearing, 224, hand-adjusting type handle lead screw, 225, spy Bearing (ball) cover processed, 24, the fixed support of occiput, 25, threads of lead screw hole, 26, lead screw link block, 3, the fixed support adjustment mechanism of chin, 31, the fixed support of chin, 32, the fixed support adjusting box-like guide rail of chin, 33, hand-adjusting type handle lead screw, 34, adjustment gear, 35, chin Fixed support adjusting tooth stick, 36, chin strap support base, 37, adjusting knob, 38, feed screw nut.
Specific embodiment:
In order to make the objectives, technical solutions and advantages of the present invention clearer, below by the specific reality shown in attached drawing Example is applied to describe the present invention.However, it should be understood that these descriptions are merely illustrative, and it is not intended to limit the scope of the invention. In addition, in the description which follows, the description to known features is eliminated, in order to avoid unnecessarily obscure idea of the invention.
As shown in Figure 1, present embodiment use following technical scheme: including backup plate 1, lead screw link block 11 and 13, The fixed support mounting rack adjustment mechanism 12 of chin strap support arm 14 and 16, head, the fixed support mounting rack 2 of head, the fixed support of overhead The fixed support adjustment mechanism 22 and 23 of adjustment mechanism 21, head circumference, the fixed support adjustment mechanism 3 of chin, the fixed support 31 of chin, chin are fixed Support adjusts box-like guide rail 32, hand-adjusting type handle lead screw 33, it is characterised in that: the lead screw link block 11 and 13 is mounted on backup plate 1 lower back two sides, the fixed support mounting rack adjustment mechanism 12 of head is mounted on above 1 dorsal midline of backup plate, overhead fixes support Adjustment mechanism 21 is mounted on fixed support 2 top of mounting rack of head, the fixed support adjustment mechanism 22 and 23 of head circumference is mounted on head and fixes The fixed support adjustment mechanism 3 of upper and lower bar of arc support of support 2 lower part of mounting rack is mounted on chin strap support arm 14 and 16.
Further, as shown in Fig. 2, the backup plate includes lead screw link block 11 and 13, the fixed support mounting rack tune of head Complete machine structure 12, star-like handle 121, lead screw install supporting block 122 and 126, shaft coupling 123, lead screw 124, protective cover 125, chin Support arm 14 and 16, chin strap installation and adjustment block 15 are held in the palm, specifically, lead screw link block 11 and 13 is mounted on 1 lower back of backup plate Two sides, the fixed support mounting rack adjustment mechanism 12 of head is mounted on above 1 dorsal midline of backup plate, lead screw installs supporting block 122 and 126 It is mounted on 1 dorsal midline of backup plate, star-like handle 121 passes through lead screw installation supporting block 122 and is connected with one end of shaft coupling 123 It connects, the other end of shaft coupling 123 is connected with 124 end of lead screw, the other end of lead screw 124 passes through bearing and is mounted on lead screw installation In supporting block 126, protective cover 125 by screw be mounted on lead screw install supporting block 122 and 126, chin strap support arm 14 and 16 One end of the lower front two sides, chin strap installation and adjustment block 15 that are mounted on backup plate 1 passes through 16 end of bolt and chin strap support arm Portion's connection can be rotated around bolt, the other end of chin strap installation and adjustment block 15 is connected by movable bolt and chin strap support arm 14 It connects.
Further, as shown in figure 3, the fixed support mounting rack 2 of the head include the fixed support adjustment mechanism 21 of overhead, The fixed support 215 of hand-adjusting type handle lead screw 211, special bearing (ball) cover 212, bearing 213, feed screw nut 214, overhead, head circumference are solid Surely adjustment mechanism 22 and 23, head circumference fixed support 221, feed screw nut 222, bearing 223, hand-adjusting type handle lead screw 224, special axis are held in the palm The fixed support 24 of socket end lid 225, occiput, threads of lead screw hole 25, lead screw link block 26, specifically, the fixed support mounting rack 2 of head is logical Cross lead screw link block 26 be mounted on backup plate 1 can move up and down, threads of lead screw hole 25 is matched with lead screw 124, overhead is fixed Asking adjustment mechanism 21 to be mounted on, head fixes support 2 top of mounting rack, the fixed support adjustment mechanism 22 and 23 of head circumference is mounted on head and consolidates Surely in the arc support for holding in the palm 2 lower part of mounting rack.
Further, as shown in figure 4, the fixed support adjustment mechanism 22 of the head circumference includes head circumference fixed support 221, lead screw spiral shell Female 222, bearing 223, hand-adjusting type handle lead screw 224, special bearing (ball) cover 225, specifically, hand-adjusting type handle lead screw 224 passes through Special bearing (ball) cover 225 and the circular hole in the fixed support 2 arc support of mounting rack of the cooperation of 223 internal diameter of bearing, 223 outer diameter of bearing and head Bearing 223 is fixed in the circular hole that secure fit, special bearing (ball) cover 225 are inserted into the fixed support 2 arc support of mounting rack of head, Feed screw nut 222 is matched with 224 internal diameter of hand-adjusting type handle lead screw, and the structure of the fixed support adjustment mechanism 23 of head circumference is fixed with head circumference Ask the structure of adjustment mechanism 22 identical.
Further, as shown in figure 5, the fixed support adjustment mechanism 21 of the overhead include hand-adjusting type handle lead screw 211, The fixed support 215 of special bearing (ball) cover 212, bearing 213, feed screw nut 214, overhead, specifically, hand-adjusting type handle lead screw 211 Across the circular hole of special bearing (ball) cover 212 and fixed support 2 top of mounting rack of the cooperation of 213 internal diameter of bearing, 213 outer diameter of bearing and head Bearing 213 is fixed in the circular hole that secure fit, special bearing (ball) cover 212 are inserted into fixed support 2 top of mounting rack of head, lead screw 214 internal diameter of nut is matched with hand-adjusting type handle lead screw 211, overhead is fixed under 215 upper circular hole of support and feed screw nut 214 Portion's secure fit.
Further, as shown in fig. 6, the fixed support adjustment mechanism 3 of the chin includes that chin fixes support 31, chin is fixed Support adjusts the fixed support adjusting tooth stick 35, chin strap branch of box-like guide rail 32, hand-adjusting type handle lead screw 33, adjustment gear 34, chin Support group seat 36, adjusting knob 37, feed screw nut 38, specifically, the both ends of chin strap support base 36 are connected to chin strap On support arm 14 and 16, hand-adjusting type handle lead screw 33 pass through chin strap support base 36 and feed screw nut 38 internal diameter cooperation, under Bar fixed support adjusts the major diameter fit of circular hole and feed screw nut 38 among 32 lower part of box-like guide rail and can be along chin strap branch support group 36 left and right sides guide rails of seat are moved forward and backward, and the fixed support adjusting tooth stick 35 of chin is nested in the fixed support of chin and adjusts box-like guide rail 32 In can up and down adjustment, adjusting knob 37 be mounted on that the fixed support of chin is adjusted outside box-like guide rail 32, adjustment gear 34 is mounted on down Bar fixed support adjusts the rack gear cooperation of 32 inside of box-like guide rail and fixed support 35 side of adjusting tooth stick of chin, the fixed support 31 of chin It is fixedly mounted on the top of the fixed support adjusting tooth stick 35 of chin.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (4)

1. a kind of head fixing device for sitting posture radiotherapy, including backup plate (1), lead screw link block (11) and (13), head Fixed support mounting rack adjustment mechanism (12) of cranium, star-like handle (121), lead screw installation supporting block (122) and (126), shaft coupling (123), lead screw (124), protective cover (125), chin strap support arm (14) and (16), chin strap installation and adjustment block (15), head Fixed support mounting rack (2), fixed support adjustment mechanism (21), hand-adjusting type handle lead screw (211), special bearing (ball) cover of overhead (212), bearing (213), feed screw nut (214), overhead fix support (215), head circumference fixes support adjustment mechanism (22) and (23), Fixed support (221), feed screw nut (222), bearing (223), hand-adjusting type handle lead screw (224), special bearing (ball) cover of head circumference (225), the fixed support (24) of occiput, threads of lead screw hole (25), lead screw link block (26), fixed support adjustment mechanism (3) of chin, under Bar fixed support (31), the fixed support of chin adjust box-like guide rail (32), hand-adjusting type handle lead screw (33), adjustment gear (34), chin Fixed support adjusting tooth stick (35), chin strap support base (36), adjusting knob (37), feed screw nut (38), it is characterised in that: The lead screw link block (11) and (13) are mounted on backup plate (1) lower back two sides, the fixed support mounting rack adjustment mechanism of head (12) it is mounted on above backup plate (1) dorsal midline, lead screw installation supporting block (122) and (126) is mounted on backup plate (1) dorsal midline It goes up, star-like handle (121) is connected across lead screw installation supporting block (122) with one end of shaft coupling (123), shaft coupling (123) The other end be connected with lead screw (124) end, the other end of lead screw (124) pass through bearing be mounted on lead screw installation supporting block (126) on, protective cover (125) by screw be mounted on lead screw install supporting block (122) and (126), chin strap support arm (14) (16) one end of the lower front two sides, chin strap installation and adjustment block (15) that are mounted on backup plate (1) passes through bolt and chin strap The connection of support arm (16) end can be rotated around bolt, the other end of chin strap installation and adjustment block (15) passes through pin and chin strap branch Brace (14) connection, fixed support mounting rack (2) of head by lead screw link block (26) be mounted on backup plate (1) can on move down Dynamic, threads of lead screw hole (25) are matched with lead screw (124), fixed support adjustment mechanism (21) of overhead is mounted on the fixed support peace of head Shelve (2) top, fixed support adjustment mechanism (22) and (23) of head circumference is mounted on the arc support of fixed support mounting rack (2) lower part of head Upper and lower bar of fixed support adjustment mechanism (3) is mounted on chin strap support arm (14) and (16).
2. a kind of head fixing device for sitting posture radiotherapy according to claim 1, it is characterised in that: described Fixed support adjustment mechanism (21) of overhead include hand-adjusting type handle lead screw (211), special bearing (ball) cover (212), bearing (213), The fixed support (215) of feed screw nut (214), overhead, hand-adjusting type handle lead screw (211) pass through special bearing (ball) cover (212) and axis Hold the cooperation of (213) internal diameter, the circular hole secure fit of bearing (213) outer diameter and fixed support mounting rack (2) top of head, special bearing The circular hole on fixed support mounting rack (2) top of end cap (212) insertion head is fixed bearing (213), in feed screw nut (214) Diameter is matched with hand-adjusting type handle lead screw (211), overhead is fixed holds in the palm (215) upper circular hole and feed screw nut (214) lower part Secure fit.
3. a kind of head fixing device for sitting posture radiotherapy according to claim 1, it is characterised in that: described Fixed support adjustment mechanism (22) of head circumference includes fixed support (221), feed screw nut (222), bearing (223), hand-adjusting type handle of head circumference Lead screw (224), special bearing (ball) cover (225), hand-adjusting type handle lead screw (224) pass through special bearing (ball) cover (225) and bearing (223) internal diameter cooperation, bearing (223) outer diameter and the circular hole secure fit in fixed support mounting rack (2) the arc support of head, special axis Bearing (223) is fixed in circular hole in fixed support mounting rack (2) the arc support of socket end lid (225) insertion head, feed screw nut (222) it is matched with hand-adjusting type handle lead screw (224) internal diameter, the structure and the fixed support of head circumference of fixed support adjustment mechanism (23) of head circumference The structure of adjustment mechanism (22) is identical.
4. a kind of head fixing device for sitting posture radiotherapy according to claim 1, it is characterised in that: described Fixed support adjustment mechanism (3) of chin, which includes that chin is fixed, asks the fixed support in (31), chin to adjust box-like guide rail (32), hand-adjusting type handle Fixed support adjusting tooth stick (35), chin strap support base (36), adjusting knob of lead screw (33), adjustment gear (34), chin (37), feed screw nut (38), the both ends of chin strap support base (36) are connected on chin strap support arm (14) and (16), Hand-adjusting type handle lead screw (33) passes through the internal diameter cooperation of chin strap support base (36) and feed screw nut (38), the fixed support of chin is adjusted Save box-like guide rail (32) lower part among circular hole and feed screw nut (38) major diameter fit and can be along chin strap support base (36) Left and right sides guide rail is moved forward and backward, and fixed support adjusting tooth stick (35) of chin is nested in the fixed support of chin and adjusts box-like guide rail (32) In can up and down adjustment, adjusting knob (37) be mounted on the fixed support of chin and adjust that box-like guide rail (32) external, adjustment gear (34) peace Mounted in the fixed support of chin adjust box-like guide rail (32) internal rack gear cooperation with fixed support adjusting tooth stick (35) side of chin, under Bar fixed support (31) is fixedly mounted on the top of fixed support adjusting tooth stick (35) of chin.
CN201810874284.5A 2018-08-03 2018-08-03 Head fixing device for sitting posture radiotherapy Active CN109107054B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN109107054B CN109107054B (en) 2020-09-08

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CN116712186B (en) * 2023-08-11 2023-12-01 首都医科大学附属北京口腔医院 Anesthesia headstock

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