CN211050745U - Position fixing device for spiral tomography radiotherapy after breast conservation operation of patient with large breast - Google Patents
Position fixing device for spiral tomography radiotherapy after breast conservation operation of patient with large breast Download PDFInfo
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- CN211050745U CN211050745U CN201921606577.1U CN201921606577U CN211050745U CN 211050745 U CN211050745 U CN 211050745U CN 201921606577 U CN201921606577 U CN 201921606577U CN 211050745 U CN211050745 U CN 211050745U
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Abstract
The utility model provides a position fixing device to big patient of breast row's insurance breast postoperative spiral fault radiotherapy, it adopts the design of prostrate formula to sick side breast and healthy side breast have set up the fixed cover of mammary gland and the mammary gland tray that 3D printed respectively specially for patient. The body position fixing device can avoid the influence of respiratory motion to the breast position, then embrace the claw earlier through the circular arc to the breast of suffering from side and gather together and fix a position, install individualized fixed cover of mammary gland and carry out the complete maintenance to whole breast of suffering from side again, when carrying out spiral fault radiotherapy, can not take place the wobbling phenomenon of breast, the pendulum position that can guarantee to suffer from side breast and radiotherapy target region when radiotherapy keeps highly uniform at every turn, consequently repeated pendulum position precision is high, can effectively satisfy TomoTherapy system intensity modulated radiation therapy demand. The breast tray is directly arranged on the healthy side breast, and the healthy side breast is lifted and shielded by the breast tray, so that the healthy side breast can be prevented from entering the irradiation field range due to swinging.
Description
Technical Field
The utility model relates to a medical position fixing device specifically is a position fixing device to breast cancer postoperative spiral fault radiotherapy of great patient of breast belongs to medical apparatus technical field.
Background
In recent years, the proportion of breast cancer patients who receive breast protection surgery for treatment is gradually increased, while radiotherapy after breast protection is an important treatment measure for preventing local recurrence of breast cancer after breast protection, and with the progress of medical technology, more and more breast cancer patients select more advanced spiral tomography radiotherapy during radiotherapy after breast protection. Helical TomoTherapy is a tumor radiotherapy method based on TomoTherapy system, which can irradiate tumor with 360-degree focusing tomo under the guidance of helical CT, thereby carrying out more efficient and accurate radiotherapy on malignant tumor patients.
When a TomoTherapy system is used for spiral TomoTherapy after breast cancer patients are protected, the patients need to keep the radiotherapy body position fixed on a treatment bed of the TomoTherapy system, at present, a breast bracket is generally used as a body position fixing device and is provided with a supporting plate, a vacuum fixing pad is arranged on the supporting plate, when the spiral TomoTherapy system is used, the patients lie on the back on the supporting plate, the heads and the shoulders of the patients rest on the vacuum fixing pad and are downwards sunken, the two hands of the patients lift and grasp the hand grips on the upper portion of the supporting plate, the vacuum fixing pad is vacuumized at the moment, the vacuum fixing pad can form a fixed shape sunken part matched with the head and the shoulders of the patients, and therefore the body positions of the patients are fixed.
The breast bracket can only fix the supine position of a patient and can not directly fix the breasts of the patient, for a part of patients with large breasts, especially middle and old aged women patients with fat body conditions, the skins of the breasts of the patients are loose, the breasts are large and obviously droop, and the mobility of breast tissues in the front of the chest is large, so that the relative positions of the breasts in the front of the chest are still unfixed even if the head and the shoulders are fixed when the patients are placed in position during each radiotherapy, and the breathing motion can also influence the positions of the breasts, in addition, when the TomoTherapy system works, the treatment couch linearly sends the patients into the annular frame, the radiotherapy rays take the shape of a spiral annular fault to irradiate tumors, the motion of the treatment couch can cause the breasts of the patients to swing involuntarily, at the moment, the positions of the breasts at the side are not easy to be fixed, and the breasts at the healthy side can also enter the irradiation field range due to swing, therefore, when a patient with a large breast uses the existing breast bracket to carry out spiral TomoTherapy, a positioning error is easily caused, the repeated positioning precision of the breast position at the affected side and the radiotherapy target area is reduced, and the precision required by intensity modulated radiation therapy of the Tomo therapy system cannot be met. In order to solve the problem of breast swing, a part of the breast brackets are also provided with devices for clamping and drawing the nipples of the patients so as to fix the positions of the breasts of the patients in front of the breasts, but the operation incisions of the breast protection operation are generally arranged near the nipples, so that the nipples are clamped and drawn easily to cause the operation incisions to be ruptured again, the comfort of the patients is obviously poor, and the clinical use effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a position fixing device to big patient of breast cancer after-care spiral fault radiotherapy, it adopts the design of prostrate formula, and the fixed cover of mammary gland and the mammary gland tray that 3D printed have been set up respectively for patient's affected side breast and healthy side breast specially, thereby it is higher to obtain the repeated pendulum position precision that a to the big patient of breast special design, more can satisfy the position fixing device of tomo therapy system intensity modulated radiation therapy demand, use this position fixing device to fix patient's breast, can not influence the operation incision of affected side breast, patient's comfort level is high, the acceptance is good.
In order to realize the purpose, the utility model discloses the concrete technical scheme who adopts as follows:
a body position fixing device for spiral tomotherapy after breast conservation of a patient with large breasts is provided with a horizontal transverse body supporting plate supported by four support legs in an overhead manner, a headrest capable of sliding back and forth on the body supporting plate is arranged in the center of the front part of the top surface of the body supporting plate, a face hole for ventilation of a face is formed in the center of the headrest, transverse sliding rails are arranged on the left side and the right side of the bottom surface of the headrest, a large long hole is formed in the position, corresponding to the face hole, of the body supporting plate, and a transverse sliding groove is formed in the position, corresponding to the transverse sliding rail, of the body supporting plate; u-shaped hand supports which are supported by support rods and can rotate around the tops of the support rods are respectively arranged at the positions of the left side and the right side of the top surface of the body supporting plate in front of the headrest, and two vertical rods serving as grippers are fixedly arranged at the positions of the top surface of the body supporting plate, which are close to the inner positions in front of the two U-shaped hand supports; the left side and the right side of the rear part of the top surface of the body supporting plate near the rear position are respectively provided with a U-shaped foot support which is supported by a supporting rod and can rotate around the top of the supporting rod.
Furthermore, four support legs of the body supporting plate are respectively arranged on four corners of the bottom surface of the body supporting plate, two support legs at the front side and two support legs at the rear side are respectively fixedly arranged on the front bottom plate and the rear bottom plate, the front end of the front bottom plate and the rear end of the rear bottom plate are respectively connected with a horizontal and straight fixing rod, a plurality of upwards-protruding connecting pins are arranged on rod bodies of the fixing rods, and the fixing rods are connected with positioning holes in the front bottom plate and the rear bottom plate through the connecting pins; the two ends of the fixed rod are respectively provided with a cylindrical staple bolt which is used for being clamped on the positioning grooves at the two sides of the treatment bed of the Tomo therapy system.
The multifunctional nursing bed is characterized in that a horizontal straight rectangular long hole is formed in the position, behind a headrest, of the top surface of the body supporting plate, straight sliding rails are arranged on the inner sides of the front and rear hole edges of the rectangular long hole, two rectangular breast supporting plates which are arranged left and right are erected on the two straight sliding rails, the breast supporting plates are in sliding connection with the two straight sliding rails through grooves in the front and rear side edges of the breast supporting plates, and locking screws for locking the moving positions of the breast supporting plates are further arranged on the bottom surfaces of the breast supporting plates at positions corresponding to the grooves.
Furthermore, the outside on hole edge is equipped with the scale around the rectangle slot hole, and the position placed in the middle on mammary gland layer board top surface left and right sides border is equipped with the benchmark arrow relative with the scale to mark the position of two mammary gland layer boards.
The mammary gland supporting plate is characterized in that a mammary gland through hole is formed in the center of the mammary gland supporting plate, a fillet is formed in the upper edge of the mammary gland through hole, a three-jaw chuck mechanism is arranged inside the mammary gland supporting plate and on the outer side of the circumference of the mammary gland through hole, three movable clamping jaws of the three-jaw chuck mechanism extend towards the inner side of the mammary gland through hole, arc holding claws are arranged at the front ends of the movable clamping jaws and are uniformly distributed on the inner side of the circumference of the mammary gland through hole, and accommodating grooves for the arc holding claws to return are formed in the positions, corresponding to; the three-jaw chuck mechanism is only provided with a small bevel gear as an adjusting point, a small bevel gear rotating adjusting hole of the left breast supporting plate is exposed outwards from the left side surface of the left breast bracket, and a small bevel gear rotating adjusting hole of the right breast supporting plate is exposed outwards from the right side surface of the right breast bracket.
Furthermore, a circle of soft cushion is laid on the outer side of the fillet at the upper edge of the breast through hole.
Furthermore, the three-jaw chuck mechanism adopts a common self-centering three-jaw chuck mechanism, a small bevel gear is arranged to be meshed with a large bevel gear, a plane spiral groove on the bottom surface of the large bevel gear is meshed with plane threads on the top surfaces of the three movable clamping jaws at the same time, the small bevel gear drives the large bevel gear to rotate, and then the three movable clamping jaws are driven to synchronously contract or expand in a sliding groove of the breast supporting plate.
The bottom surface of the breast supporting plate is provided with three sinking grooves which are uniformly distributed along the circumference at the edge of the breast through hole, and the bottoms of the sinking grooves are provided with threaded holes; one of the two breast supporting plates is fixedly provided with a personalized breast fixing cover formed by 3D printing of carbon fiber composite materials on the sinking groove of the bottom surface through screws, the breast fixing cover is in an inverted hanging bell shape and fixedly covers the bottom of a breast through hole of the breast supporting plate, and the upper edge of the cover opening of the breast fixing cover is provided with three perforated bosses which correspond to the sinking grooves of the bottom surface of the breast supporting plate; a mammary gland tray is fixedly arranged on the sinking groove on the bottom surface of the other mammary gland supporting plate through a screw, the mammary gland tray is in a shallow disc shape and fixedly supported and blocked at the bottom of the mammary gland through hole of the mammary gland supporting plate, and three perforated bosses corresponding to the sinking grooves on the bottom surface of the mammary gland supporting plate are arranged on the upper edge of the plate opening of the mammary gland tray.
Furthermore, the sinking grooves on the bottom surface of the breast supporting plate adopt a mistake-proofing design, one sinking groove is a special-shaped notch, and the shapes of the corresponding breast fixing cover and the opening boss of the breast tray are matched with the shape of the special-shaped notch, so that the rotation angle dislocation is prevented when the personalized breast fixing cover is installed.
The body position fixing device adopts the prostrate design, the patient with larger breasts lies on the body supporting plate during the spiral tomotherapy after breast cancer breast protection, and the left and right breasts of the patient are correspondingly placed into the breast through holes of the left and right breast supporting plates to naturally droop, thereby avoiding the influence of respiratory motion on the position of the breasts; the affected side breast is slightly held tightly at the root of the affected side breast through the arc holding claw, the affected side breast is gathered and positioned, and then the personalized breast fixing cover is installed to completely fix the whole affected side breast; because the mammary gland fixing cover is made of the carbon fiber composite material with good X-ray transmission performance, the irradiation effect of radiotherapy rays is not influenced while the breast at the affected side is retained, the phenomenon of breast swing can not occur when the spiral TomoTherapy is carried out, the swing positions of the breast at the affected side and the radiotherapy target area can be kept consistent in height when the radiotherapy is carried out at each time, the repeated swing position precision is high, and the requirements of intensity modulated radiotherapy of a Tomo therapy system can be effectively met. The breast tray is directly arranged on the healthy side breast, and the healthy side breast is lifted and shielded by the breast tray, so that the healthy side breast can be prevented from entering the irradiation field range due to swinging. The position fixing device is used for fixing the breasts of a patient, the operation incision of the breasts at the affected side cannot be influenced, the breasts can be enclosed, the comfort of the patient is high, and the clinical use effect is good.
Drawings
Fig. 1 is a schematic view of the overall structure of the body position fixing device.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a schematic structural view of the body position fixing device after the fixing rod, the head pad and the breast supporting plate are removed.
Fig. 4 is a schematic structural view of the fixing rod.
Fig. 5 is a schematic view of the structure of the head pad.
Fig. 6 is a front perspective view of the breast supporting plate.
Fig. 7 is a back view perspective view of the breast supporting plate.
Fig. 8 is a schematic structural view of the breast fixing cover.
Fig. 9 is a schematic structural view of a breast tray.
Fig. 10 is a front view perspective structural diagram of the breast splint with the breast fixing cover installed thereon.
Fig. 11 is a back view perspective structural diagram of the breast splint with the breast fixing cover installed thereon.
Fig. 12 is a front perspective three-dimensional structure diagram of the breast tray mounted on the breast supporting plate.
Fig. 13 is a back view perspective structural view of the breast tray mounted on the breast supporting plate.
Fig. 14 is a right side sectional view of fig. 10.
Fig. 15 is a right side sectional view of fig. 12.
Fig. 16 is a schematic view of the three circular arc holding claws in fig. 7 extending to the inner side of the breast through hole.
In the figure: 1-support leg, 2-body supporting plate, 2 a-large long hole, 2 b-transverse sliding groove, 2 c-rectangular long hole, 2 d-straight sliding rail, 2 e-graduated scale, 3-headrest, 3 a-face hole, 3 b-transverse sliding rail, 4-U-shaped hand rest, 5-gripper, 6-U-shaped foot rest, 7-front bottom plate, 8-rear bottom plate, 9-fixed rod, 9 a-connecting pin, 9 b-cylindrical staple, 10-mammary gland supporting plate, 10 a-groove, 10 b-reference arrow, 10 c-mammary gland through hole, 10 d-sinking groove, 10 e-special-shaped notch, 11-locking screw, 12-soft pad, 13-three-jaw chuck mechanism, 13 a-movable jaw, 13 b-arc holding jaw, 13 c-small bevel gear, 13 d-large bevel gear, 14-mammary gland fixing cover, 15-perforated boss and 16-mammary gland tray.
Detailed Description
The following description will further explain embodiments of the present invention by referring to the drawings and examples.
As shown in fig. 1-16, the utility model discloses a position fixing device is equipped with the horizontal health layer board 2 of level by the built on stilts support of four stabilizer blades 1, the anterior central point of 2 top surfaces of health layer boards puts and is equipped with the headrest 3 that can slide around on health layer board 2, the central authorities of headrest 3 are equipped with and are used for supplying the ventilative face hole 3a of people's face, the left and right sides of 3 bottom surfaces of headrest is equipped with horizontal slide rail 3b, health layer board 2 is opened at the position that corresponds headrest face hole 3a has big slot hole 2a, health layer board 2 is equipped with horizontal spout 2b at the position that corresponds headrest horizontal slide rail 3 b. U-shaped hand supports 4 which are supported by supporting rods and can rotate around the tops of the supporting rods are respectively arranged at the positions of the left side and the right side of the top surface of the body supporting plate 2 in front of the headrest 3, and two vertical rods serving as grippers 5 are fixedly arranged at the positions, close to the insides, of the top surface of the body supporting plate 2 in front of the two U-shaped hand supports 4; the left side and the right side of the rear part of the top surface of the body supporting plate 2 near the rear position are respectively provided with a U-shaped foot support 6 which is supported by a supporting rod and can rotate around the top of the supporting rod. The four support legs 1 of the body supporting plate 2 are respectively arranged on four corners of the bottom surface of the body supporting plate 2, the two support legs 1 at the front side and the two support legs 1 at the rear side are respectively fixedly arranged on a front bottom plate 7 and a rear bottom plate 8, the front end of the front bottom plate 7 and the rear end of the rear bottom plate 8 are respectively connected with a horizontal and straight fixing rod 9, a plurality of upwards-protruding connecting pins 9a are arranged on a rod body of the fixing rod 9, and the fixing rod 9 is connected with positioning holes in the front bottom plate 7 and the rear bottom plate 8 through the connecting pins; two ends of the fixing rod 9 are respectively provided with a cylindrical staple bolt 9b for being clamped on the positioning grooves at two sides of the treatment bed of the Tomo therapy system.
The position of the top surface of the body supporting plate 2 behind the headrest 3 is provided with a horizontal straight rectangular long hole 2c, the inner sides of the front and rear hole edges of the rectangular long hole 2c are provided with straight sliding rails 2d, two rectangular breast supporting plates 10 which are arranged left and right are erected on the two straight sliding rails 2d, the breast supporting plates 10 form sliding connection with the two straight sliding rails 2d through grooves 10a on the front and rear side edges of the breast supporting plates, and the bottom surfaces of the breast supporting plates 10 are also provided with locking screws 11 for locking the moving positions of the breast supporting plates 10 at positions corresponding to the grooves 10 a. The outer sides of the front hole edge and the rear hole edge of the rectangular long hole 2c are provided with a graduated scale 2e, and the central positions of the left side edge and the right side edge of the top surface of the breast supporting plate 10 are provided with reference arrows 10b opposite to the graduated scale 2e, so that the positions of the two breast supporting plates 10 can be identified.
The center position of the mammary gland supporting plate 10 is provided with a mammary gland through hole 10c, the upper edge of the mammary gland through hole 10c is provided with a fillet, and the outer side of the fillet is further paved with a circle of soft cushion 12. A three-jaw chuck mechanism 13 is arranged on the outer side of the circumference of a breast through hole 10c in the breast supporting plate 10, three movable clamping jaws 13a of the three-jaw chuck mechanism 13 extend towards the inner side of the breast through hole 10c, an arc holding jaw 13b is arranged at the front end of each movable clamping jaw 13a, the three arc holding jaws 13b are uniformly distributed on the inner side of the circumference of the breast through hole 10c, and an accommodating groove for returning the arc holding jaw 13b is formed in the position, corresponding to the three arc holding jaws 13b, of the circumferential inner wall of the breast through hole 10 c; the three-jaw chuck mechanism 13 is only provided with a small bevel gear 13c as an adjusting point, a rotary adjusting hole of the small bevel gear 13c of the left breast supporting plate 10 is exposed outwards from the left side surface of the left breast bracket 10, and a rotary adjusting hole of the small bevel gear 13c of the right breast supporting plate 10 is exposed outwards from the right side surface of the right breast bracket 10. The three-jaw chuck mechanism 13 adopts a common self-centering three-jaw chuck mechanism, a small bevel gear 13c is arranged to be meshed with a large bevel gear 13d, a plane spiral groove on the bottom surface of the large bevel gear 13d is meshed with plane threads on the top surfaces of three movable jaws 13a at the same time, the small bevel gear 13c drives the large bevel gear 13d to rotate, and then the three movable jaws 13a are driven to synchronously contract or expand in a sliding groove of the breast supporting plate 10.
The bottom surface of the mammary gland supporting plate 10 is provided with three sunk grooves 10d which are uniformly distributed along the circumference at the edge of the mammary gland through hole 10c, and the bottoms of the sunk grooves 10d are provided with threaded holes; a personalized mammary gland fixing cover 14 formed by 3D printing of carbon fiber composite materials is fixedly arranged on a sinking groove 10D on the bottom surface of one of the two mammary gland supporting plates 10 through a screw, the mammary gland fixing cover 14 is in an inverted hanging bell shape and fixedly covers the bottom of a mammary gland through hole 10c of the mammary gland supporting plate 10, and three hole-opening bosses 15 are arranged on the upper edge of a cover opening of the mammary gland fixing cover 14 and correspond to the sinking grooves 10D on the bottom surface of the mammary gland supporting plate 10; a mammary gland tray 16 is fixedly arranged on the sinking groove 10d at the bottom surface of the other mammary gland supporting plate 10 through a screw, the mammary gland tray 16 is in a shallow dish shape and fixedly supported and blocked at the bottom of a mammary gland through hole 10c of the mammary gland supporting plate 10, and three perforated bosses 15 are arranged at the upper edge of the plate opening of the mammary gland tray 16 and correspond to the sinking grooves 10d at the bottom surface of the mammary gland supporting plate 10. The sinking grooves 10d on the bottom surface of the breast supporting plate 10 adopt a mistake-proofing design, one sinking groove 10d is a special-shaped notch 10e, and the shapes of the corresponding breast fixing cover 14 and the opening boss 15 of the breast tray 16 are matched with the shape of the special-shaped notch 10e, so that the rotation angle dislocation when the personalized breast fixing cover 14 is installed is prevented.
The utility model discloses a great patient of breast cancer of going on breast cancer protects position fixing device of milk postoperative spiral fault radiotherapy's application method, including following step:
(1) and fixedly installing the body position fixing device on a treatment bed of the Tomo therapy system, adjusting the positions of the left and right breast supporting plates 10 on the rectangular long holes 2c of the body supporting plate according to the positions of the left and right breasts of the patient and locking the two breast supporting plates.
(2) The patient is put on the body supporting plate in a prone position, the left breast and the right breast of the patient are correspondingly placed in the breast through holes 10c of the left breast supporting plate 10 and the right breast supporting plate 10 to naturally droop, meanwhile, the head of the patient is placed on the headrest 3, the face of the patient faces the headrest face 3a, the two arms of the patient are lifted and bent to extend forwards, the forearm of the patient is supported on the U-shaped hand support 4 in front of the headrest 3, the palm of the patient holds the grabbing hand 5, and the two feet of the patient are supported on the U-shaped foot support 6.
(3) And a mammary gland supporting plate 16 is arranged on the mammary gland supporting plate 10 corresponding to the healthy side breast, and the healthy side breast is lifted and shielded by the mammary gland supporting plate 16.
(4) And adjusting the three-jaw chuck mechanism 13 on the breast supporting plate 10 corresponding to the breast at the affected side by using an inner hexagonal wrench to enable the arc holding claws 13b of the three movable clamping claws 13 to slightly hold the root of the breast at the affected side, and gathering and positioning the breast at the affected side.
(5) Carrying out CT scanning and virtual three-dimensional reconstruction on the affected side breast of the patient by using the spiral CT scanning function of the Tomo therapy system, then importing the three-dimensional reconstruction data into a computer, designing a personalized mammary gland fixing cover 14 completely attached to the affected side breast of the patient according to the three-dimensional reconstruction model of the affected side breast of the patient, then inputting the three-dimensional modeling data of the designed mammary gland fixing cover 14 into a 3D printer, and printing the personalized mammary gland fixing cover 14 by using a carbon fiber composite material as a 3D printing material.
(6) And (3) installing the individualized breast fixing cover 14 obtained in the step (5) on the breast supporting plate 10 corresponding to the breast at the affected side according to the set direction, completely fixing the whole breast at the affected side by the breast fixing cover 14, pasting a positioning mark at the position, corresponding to the center of the radiotherapy target area, outside the breast fixing cover 14, setting the radiotherapy parameters of the TomoTherapy system, and carrying out spiral tomography radiotherapy on the patient by using the TomoTherapy system.
(7) And when the next radiotherapy is carried out, the steps (1), (2), (3), (4) and (6) are sequentially repeated, so that the repeated positioning precision of the affected breast position and the radiotherapy target area is ensured to meet the requirements of intensity modulated radiotherapy of the Tomo therapy system.
The above-mentioned drawings are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications or equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (6)
1. The utility model provides a position fixing device to big patient of breast row protect postoperative spiral fault radiotherapy, characterized by: the body position fixing device is provided with a horizontal transverse supporting plate supported by four supporting legs in an overhead manner, a headrest capable of sliding back and forth on the supporting plate is arranged in the center of the front part of the top surface of the supporting plate, a face hole for ventilating the face is formed in the center of the headrest, transverse sliding rails are arranged on the left side and the right side of the bottom surface of the headrest, a large long hole is formed in the position, corresponding to the face hole of the headrest, of the supporting plate, and a transverse sliding groove is formed in the position, corresponding to the transverse sliding rails of the; u-shaped hand supports which are supported by support rods and can rotate around the tops of the support rods are respectively arranged at the positions of the left side and the right side of the top surface of the support plate in front of the headrest, and two vertical rods serving as grippers are fixedly arranged at the positions, close to the inner part, of the top surface of the support plate in front of the two U-shaped hand supports; the left side and the right side of the rear part of the top surface of the supporting plate near the rear position are respectively provided with a U-shaped foot rest which is supported by a supporting rod and can rotate around the top of the supporting rod;
a horizontal straight rectangular long hole is formed in the top surface of the supporting plate at the position behind the headrest, straight sliding rails are arranged on the inner sides of the front and rear hole edges of the rectangular long hole, two rectangular breast supporting plates which are arranged left and right are erected on the two straight sliding rails, the breast supporting plates are in sliding connection with the two straight sliding rails through grooves in the front and rear side edges of the breast supporting plates, and locking screws for locking the moving positions of the breast supporting plates are further arranged on the bottom surfaces of the breast supporting plates at the positions corresponding to the grooves;
the mammary gland supporting plate is characterized in that a mammary gland through hole is formed in the center of the mammary gland supporting plate, a fillet is formed in the upper edge of the mammary gland through hole, a three-jaw chuck mechanism is arranged inside the mammary gland supporting plate and on the outer side of the circumference of the mammary gland through hole, three movable clamping jaws of the three-jaw chuck mechanism extend towards the inner side of the mammary gland through hole, arc holding claws are arranged at the front ends of the movable clamping jaws and are uniformly distributed on the inner side of the circumference of the mammary gland through hole, and accommodating grooves for the arc holding claws to return are formed in the positions, corresponding to; the three-jaw chuck mechanism is only provided with a small bevel gear as an adjusting point, a small bevel gear rotating adjusting hole of the left breast supporting plate is exposed outwards from the left side surface of the left breast bracket, and a small bevel gear rotating adjusting hole of the right breast supporting plate is exposed outwards from the right side surface of the right breast bracket;
the bottom surface of the breast supporting plate is provided with three sinking grooves which are uniformly distributed along the circumference at the edge of the breast through hole, and the bottoms of the sinking grooves are provided with threaded holes; one of the two breast supporting plates is fixedly provided with a personalized breast fixing cover formed by 3D printing of carbon fiber composite materials on the sinking groove of the bottom surface through screws, the breast fixing cover is in an inverted hanging bell shape and fixedly covers the bottom of a breast through hole of the breast supporting plate, and the upper edge of the cover opening of the breast fixing cover is provided with three perforated bosses which correspond to the sinking grooves of the bottom surface of the breast supporting plate; a mammary gland tray is fixedly arranged on the sinking groove on the bottom surface of the other mammary gland supporting plate through a screw, the mammary gland tray is in a shallow disc shape and fixedly supported and blocked at the bottom of the mammary gland through hole of the mammary gland supporting plate, and three perforated bosses corresponding to the sinking grooves on the bottom surface of the mammary gland supporting plate are arranged on the upper edge of the plate opening of the mammary gland tray.
2. A body position immobilization device for helical tomotherapy after breast conservation for larger breast patients as claimed in claim 1 wherein: the four support legs of the supporting plate are respectively arranged on four corners of the bottom surface of the supporting plate, two support legs at the front side and two support legs at the rear side are respectively fixedly arranged on the front bottom plate and the rear bottom plate, the front end of the front bottom plate and the rear end of the rear bottom plate are respectively connected with a horizontal and straight fixing rod, a plurality of connecting pins protruding upwards are arranged on a rod body of the fixing rod, and the fixing rod is connected with positioning holes in the front bottom plate and the rear bottom plate through the connecting pins; the two ends of the fixed rod are respectively provided with a cylindrical staple bolt which is used for being clamped on the positioning grooves at the two sides of the treatment bed of the Tomo therapy system.
3. A body position immobilization device for helical tomotherapy after breast conservation for larger breast patients as claimed in claim 1 wherein: the outer sides of the front hole edge and the rear hole edge of the rectangular long hole are provided with scale scales, and reference arrows opposite to the scale scales are arranged in the middle positions of the left side edge and the right side edge of the top surface of the breast supporting plate.
4. A body position immobilization device for helical tomotherapy after breast conservation for larger breast patients as claimed in claim 1 wherein: and a circle of soft cushion is laid on the outer side of the fillet at the upper edge of the mammary gland through hole.
5. A body position immobilization device for helical tomotherapy after breast conservation for larger breast patients as claimed in claim 1 wherein: the three-jaw chuck mechanism adopts a common self-centering three-jaw chuck mechanism, a small bevel gear is arranged to be meshed with a large bevel gear, a plane spiral groove on the bottom surface of the large bevel gear is meshed with plane threads on the top surfaces of three movable jaws at the same time, the small bevel gear drives the large bevel gear to rotate, and then the three movable jaws are driven to synchronously contract or expand in a chute of a breast supporting plate.
6. A body position immobilization device for helical tomotherapy after breast conservation for larger breast patients as claimed in claim 1 wherein: the sinking grooves on the bottom surface of the mammary gland supporting plate adopt a mistake proofing design, one sinking groove is a special-shaped notch, and the shapes of the corresponding mammary gland fixing cover and the opening boss of the mammary gland tray are matched with the shape of the special-shaped notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921606577.1U CN211050745U (en) | 2019-09-25 | 2019-09-25 | Position fixing device for spiral tomography radiotherapy after breast conservation operation of patient with large breast |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921606577.1U CN211050745U (en) | 2019-09-25 | 2019-09-25 | Position fixing device for spiral tomography radiotherapy after breast conservation operation of patient with large breast |
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| CN211050745U true CN211050745U (en) | 2020-07-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110575626A (en) * | 2019-09-25 | 2019-12-17 | 广西医大开元埌东医院有限责任公司 | Position fixing device for spiral tomography radiotherapy after breast conservation operation of patient with large breast |
| CN112716704A (en) * | 2020-12-24 | 2021-04-30 | 重庆海扶医疗科技股份有限公司 | Transfer bed |
-
2019
- 2019-09-25 CN CN201921606577.1U patent/CN211050745U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110575626A (en) * | 2019-09-25 | 2019-12-17 | 广西医大开元埌东医院有限责任公司 | Position fixing device for spiral tomography radiotherapy after breast conservation operation of patient with large breast |
| CN112716704A (en) * | 2020-12-24 | 2021-04-30 | 重庆海扶医疗科技股份有限公司 | Transfer bed |
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