CN114849088A - Position fixing device for heavy ion radiotherapy of breast tumor - Google Patents
Position fixing device for heavy ion radiotherapy of breast tumor Download PDFInfo
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- CN114849088A CN114849088A CN202210546532.XA CN202210546532A CN114849088A CN 114849088 A CN114849088 A CN 114849088A CN 202210546532 A CN202210546532 A CN 202210546532A CN 114849088 A CN114849088 A CN 114849088A
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- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
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- A61N2005/1097—Means for immobilizing the patient
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Abstract
The invention discloses a body position fixing device for heavy ion radiotherapy of breast tumors, which comprises a radiotherapy bed, a vacuum pad and a thermoplastic film, wherein frames are fixed on the left side and the right side of the thermoplastic film; the vacuum negative pressure pad has a unique structure, can effectively solve the problem that the vacuum negative pressure pad cannot be effectively attached to the back skin of a patient due to the fact that the pushing time difference exists between the two sides of the vacuum negative pressure pad, and also effectively solves the problem that the matching and fixing effect of the vacuum pad and the thermoplastic film cannot be fully exerted in the prior art.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a posture fixing device for heavy ion radiotherapy of breast tumors.
Background
Tumor radiotherapy is a local treatment for tumors using radiation. The radiation includes alpha, beta and gamma rays generated by radioactive isotopes, and x-rays, electron beams, proton beams and other particle beams generated by various x-ray therapeutic machines or accelerators. About 70% of cancer patients require radiation therapy in the course of cancer treatment, and about 40% of cancers can be cured by radiation therapy. The role and the position of radiotherapy in tumor treatment are increasingly prominent, the radiotherapy becomes one of the main means for treating malignant tumors, the heavy ion radiotherapy technology is developed along with the development and the progress of science and technology, the dose of heavy ion rays can be concentrated on cancer cells, the damage to surface layer cells is small in the treatment mode, no side effect is caused, a patient does not feel pain, and the cure rate is higher; compared with the conventional radiotherapy which mainly loses the dose on the superficial part and damages the normal tissues on the surface layer of the human body, the device can provide better physical dose distribution and higher biological effect so as to achieve higher local control rate and lower side effect, thereby needing more accurate positioning on the body position of a patient in the treatment process so as to ensure accurate treatment.
When the vacuum negative pressure pad is used for air exhaust and shaping, an operator is required to manually push the edges of the vacuum negative pressure pads on two sides of a patient to enable the edges to be attached to the body of the patient, so that shaping accuracy is guaranteed, but the vacuum negative pressure pad is used for shaping continuously by air exhaust, so that when the operator pushes the edges of the vacuum negative pressure pad on one side and pushes the other side of the vacuum negative pressure pad, the vacuum negative pressure pad is hardened by air exhaust, the other side of the vacuum negative pressure pad cannot be pushed to effectively contact with the body of the patient, effective restraint can not be carried out on the back of the patient, errors are increased due to the fact that the back of the patient cannot be restrained in the repeated operation process, and positioning accuracy is reduced; in addition, in the prior art, the vacuum pad and the thermoplastic film are matched and used separately from each other, so that the matching and fixing effects of the vacuum pad and the thermoplastic film cannot be fully exerted.
Disclosure of Invention
Aiming at the defects and problems of the patient body position fixation in the existing chest tumor radiotherapy process, the invention provides the body position fixing device for the chest tumor heavy ion radiotherapy, the device is unique in structure and convenient to use, the problem that the vacuum negative pressure pad cannot be effectively attached to the back skin of a patient due to the fact that the two sides of the vacuum negative pressure pad are pushed and extruded for a time difference can be effectively solved, and the problem that the fixing effect of the vacuum pad and a thermoplastic film cannot be fully exerted in the prior art is effectively solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a body position fixing device for heavy ion radiotherapy of breast tumors comprises a radiotherapy bed, a vacuum pad and a thermoplastic film, wherein frames are fixed on the left side and the right side of the thermoplastic film, a back support frame is installed on the radiotherapy bed in a matching manner, the back support frame comprises three support plates which are arranged in parallel from top to bottom at intervals, the vacuum pad is installed on a top support plate in a matching manner along the longitudinal direction, guide support rods are vertically fixed on four vertex angles of the bottom surface of the top support plate, slide holes are vertically formed in four vertex angles of a middle support plate and a bottom support plate, the four vertex angles of the middle support plate and the four vertex angles of the bottom support plate are sleeved on the guide support rods on the adjacent sides in a matching manner, and the vacuum pad can slide up and down along the guide support rods; sliding holes are vertically formed in the positions, corresponding to the guide supporting rods, of the radiotherapy bed, and the guide supporting rods below the bottom supporting plate are vertically inserted into the corresponding sliding holes and can vertically slide; the middle supporting plate and the bottom supporting plate are respectively provided with a supporting and pressing mechanism in a matching way, each supporting and pressing mechanism comprises an air bag supporting piece and a clamping arm group, the air bag supporting pieces are arranged on the supporting plates in a matching way and are connected with the bottom surfaces of the upper supporting plates, and the air bag supporting pieces are provided with exhaust valves for controlling the distance between the two adjacent supporting plates when the upper supporting plates are pressed; clamping arm sets are symmetrically fixed on the supporting plates on the left side and the right side of the air bag supporting piece, each clamping arm set comprises a plurality of clamping arm units which are arranged at intervals along the longitudinal direction, the positions of the clamping arm units on the middle supporting plate and the bottom supporting plate are alternately arranged, a yielding notch is arranged on the supporting plate above each clamping arm unit, and the yielding notches are outwards arranged along the transverse direction; the clamping arm unit comprises a fixed shaft, arc-shaped clamping arms and a driving control piece, the fixed shaft is transversely fixed on the supporting plates, the head ends of the arc-shaped clamping arms are rotatably sleeved on the fixed shaft and are connected with the driving control piece, the tail ends of the arc-shaped clamping arms on the middle supporting plate penetrate through the corresponding abdicating gaps above the tail ends of the arc-shaped clamping arms to extend to the outer side of the vacuum pad, the tail ends of the arc-shaped clamping arms on the bottom supporting plate penetrate through the corresponding abdicating gaps above the tail ends of the arc-shaped clamping arms to extend to one side of the top supporting plate, and when the distance between two adjacent supporting plates is reduced, the supporting plates above the arc-shaped clamping arms can drive the arc-shaped clamping arms to rotate inwards through the driving control piece; a plurality of body film bayonets are symmetrically arranged at the edges of the left end and the right end of the top layer supporting plate at intervals along the longitudinal direction, the number of the body film bayonets is the same as that of the arc-shaped clamping arms on the bottom layer supporting plate, and the body film bayonets are arranged on the rotating paths of the corresponding arc-shaped clamping arms; the bottom symmetry of top layer backup pad left and right sides is equipped with the frame fastener for the solid frame of card, both ends body membrane bayonet socket and the open end of the breach of stepping down are blocked by the thermoplastic membrane after fixing about the upper backup pad, and the arc arm lock in the backup pad of the middle level of the vacuum pad left and right sides is located the cladding district of thermoplastic membrane.
The bottom of vacuum pad is along being equipped with a plurality of kellies, and top layer backup pad up end and vacuum pad kellies position correspondence department open have a plurality of kellies holes, and the vacuum pad is laid in the top layer backup pad, and the kellies of vacuum pad bottom insert respectively and prop the backup pad correspond the kellies downthehole.
The air bag supporting piece is a longitudinal strip-shaped air bag, and the upper end surface and the lower end surface of the longitudinal strip-shaped air bag are respectively connected with the end surfaces of the supporting plates at the adjacent sides; and the air outlet of the strip-shaped air bag is provided with a connecting pipe, and the other end of the connecting pipe extends outwards to form a back support frame and is provided with an exhaust valve.
A headrest seat is arranged on the radiotherapy bed at the front side of the back support in a matching way, and a headrest is arranged on the headrest seat by skimming.
The position department that is used for installing the back support frame on the radiotherapy bed has the holding tank along vertical opening, and the holding tank shape matches with back support frame shape nature, and the tank bottom at the holding tank is all seted up to four slide openings.
The front end and the rear end of the fixed shaft are sleeved with fixed seats, and the fixed seats are fixedly connected with the supporting plate below through bolts.
The fixed shaft is sleeved with a shaft sleeve, the shaft sleeve can rotate on the fixed shaft, the head end of the arc-shaped clamping arm is welded with the outer ring surface of the shaft sleeve, and the outer ring surface of the other side of the shaft sleeve is connected with the driving control piece.
The driving control part comprises an arc-shaped driving rod, one end of the arc-shaped driving rod is fixedly welded with the outer annular surface of the upper part of the shaft sleeve, and the other end of the arc-shaped driving rod is arranged inwards and upwards and is in abutting contact with the bottom surface of the upper supporting plate.
And a torsion spring is arranged between the shaft sleeve and the fixed shaft and can drive the shaft sleeve to rotate outwards around the fixed shaft in a natural state, so that the top end of the arc-shaped driving rod is in abutting contact with the bottom surface of the upper supporting plate.
The frame fastener includes along a plurality of U-shaped buckles that longitudinal interval set up, and the frame of the left and right ends of thermoplastic membrane walks around top layer backup pad insert respectively in the U-shaped buckle of top layer backup pad corresponding side bottom, and the open straight line distance size of body membrane bayonet socket is greater than the width size of frame on U-shaped buckle and the adjacent side top layer backup pad.
The invention has the beneficial effects that: the position fixing device for heavy ion radiotherapy of breast tumors provided by the invention has a unique structure and comprises a radiotherapy bed, a vacuum pad and a thermoplastic film, wherein a back support frame is installed on the radiotherapy bed in a matching way, the back support frame comprises three support plates which are arranged in parallel from top to bottom at intervals, and the vacuum pad is installed on a top layer support plate in a matching way along the longitudinal direction; the middle supporting plate and the bottom supporting plate are respectively provided with a supporting and pressing mechanism in a matching way, the supporting and pressing mechanism comprises an air bag supporting piece and clamping arm sets, the air bag supporting piece is installed on the supporting plates in a matching way and is connected with the bottom surfaces of the upper supporting plates, the clamping arm sets are symmetrically fixed on the supporting plates on the left side and the right side of the air bag supporting piece, each clamping arm set comprises a plurality of clamping arm units which are arranged at intervals along the longitudinal direction, the positions of the clamping arm units on the middle supporting plate and the bottom supporting plate are alternately arranged, in addition, a stepping notch is arranged on the supporting plate above each clamping arm unit, and each clamping arm unit comprises a fixed shaft, an arc-shaped clamping arm and a driving control piece;
when a patient lies on the vacuum pad on the top supporting plate, the exhaust valve of the air bag supporting piece between the top supporting plate and the middle supporting plate is opened while the vacuum pad is pumped and shaped, and the air bag supporting piece between the top supporting plate and the middle supporting plate is in the process of pressurized exhaust, the top support plate presses down the driving control parts of the clamping arm units at the left side and the right side of the middle support plate to drive the arc-shaped clamping arms in the clamping arm units at the left side and the right side of the middle support plate to rotate around the fixed shaft in opposite directions so as to push the edge of the vacuum pad inwards, so that the vacuum pad is in the process of air exhaust plasticity, the edges at the two ends can be simultaneously pushed and attached to the body of a patient, thereby not only reducing the workload of operators, but also effectively solve the problem that the vacuum negative pressure pad can not be effectively attached to the back skin of a patient due to the time difference existing in the pushing process of the two sides of the existing vacuum negative pressure pad.
Furthermore, the body position fixing device provided by the invention is also provided with a plurality of body film bayonets which are symmetrically and longitudinally spaced at the edges of the left end and the right end of the top layer supporting plate, the number of the body film bayonets is the same as that of the arc-shaped clamping arms on the bottom layer supporting plate, and the arrangement positions of the body film bayonets are positioned on the rotating paths of the corresponding arc-shaped clamping arms; frame clamping pieces are symmetrically arranged at the bottoms of the left side and the right side of the top layer supporting plate and used for clamping and fixing the frames; when the vacuum cushion is used, after the air exhaust plasticity of the vacuum cushion is finished, the thermoplastic film after being heated and softened is covered on the chest of a patient, then the frames at the left end and the right end of the thermoplastic film are respectively inserted into the U-shaped buckles at the bottom of the corresponding side of the top layer supporting plate by bypassing the top layer supporting plate, then in the process that an operator presses the thermoplastic film on the chest of the patient to enable the thermoplastic film to be attached to the outline of the chest, the exhaust valve of the air bag supporting piece between the middle layer supporting plate and the lower layer supporting plate is opened, in the process that the air bag supporting piece between the middle layer supporting plate and the bottom layer supporting plate is pressurized and exhausted, the middle layer supporting plate can press down the driving control pieces of the clamping arm units at the left side and the right side of the bottom layer supporting plate to drive the arc-shaped clamping arms in the clamping arm units at the left side and the right side of the bottom layer supporting plate to oppositely rotate around the fixed shaft, the softened thermoplastic film is compressed to deform, and generate the bulge extending into the clamping opening of the film, so that the thermoplastic film is cooled and hardened, the blocking of the front inner wall and the rear inner wall of the convex receptor film bayonet in the film bayonet at the left side and the right side of the thermoplastic film can fix the position of the thermoplastic film.
The invention provides a body position fixing device for heavy ion radiotherapy of breast tumors, which has a unique structure and is convenient to use, and not only can effectively solve the problem that a vacuum negative pressure pad cannot be effectively attached to the back skin of a patient due to the fact that time difference exists between pushing of two sides of the vacuum negative pressure pad, but also effectively solves the problem that the effect of matching and fixing the vacuum pad and a thermoplastic film cannot be fully exerted in the prior art.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of the position of the back support frame according to the present invention.
FIG. 3 is a schematic view of the connection between the back support and the radiotherapy bed of the present invention.
FIG. 4 is a schematic view of the vacuum pad and the top support plate of the present invention.
Fig. 5 is a schematic perspective view of the back support frame of the present invention.
Fig. 6 is a schematic view of the connection relationship of the support plates of the present invention.
FIG. 7 is a schematic view showing the connection relationship between the arc-shaped clamp arm and the fixed shaft according to the present invention.
Fig. 8 is a schematic view of a fixing shaft fixing mode of the clamping arm unit of the invention.
FIG. 9 is a schematic view of the position of the bladder support member of the present invention.
Fig. 10 is a schematic view of the arrangement position and structure of the frame clip of the present invention.
FIG. 11 is a schematic view of the vacuum pad pump shaping process of the present invention.
Fig. 12 is a schematic view of the thermoplastic film clamping process of the present invention.
Fig. 13 is a schematic view of the state of the arc-shaped clamping arms pressing the thermoplastic film.
Fig. 14 is a schematic view of the thermoplastic film compression lobe shape of the present invention.
Fig. 15 is a schematic view of an arc-shaped clamping arm on the upper layer supporting rod in the invention.
Fig. 16 is an enlarged view of the structure at C in fig. 15.
Fig. 17 is a schematic view of the process of the present invention in which the arc-shaped clamp arms on the upper support plate are pressed and rotated.
FIG. 18 is a schematic view of the position adjustment mechanism on the bottom support plate of the present invention.
Fig. 19 is a schematic view of a position adjusting mechanism on the upper supporting plate of the present invention.
1 is a radiotherapy bed, 11 is a slide hole, 12 is a holding tank, 2 is a vacuum pad, 21 is a clamping rod, 3 is a thermoplastic film, 31 is a frame, 4 is a back support frame, 41 is a top support plate, 411 is a clamping rod hole, 42 is a middle support plate, 43 is a bottom support plate, 44 is a guide support rod, 45 is a guide slide hole, 46 is a abdicating notch, 47 is a body film bayonet, 5 is a support pressing mechanism, 51 is an air bag support member, 52 is a clamping arm group, 53 is a clamping arm unit, 531 is a fixed shaft, 532 is an arc-shaped clamping arm, 5321 is an arc-shaped main rod, 5322 is an arc-shaped support rod, 5323 is a rotating base, 5324 is a shaft sleeve, 533 is a driving control member, 534 is a fixed base, 535 is a shaft sleeve, 54 is a spring air bag, 6 is a U-shaped clamping piece, 71 is a driving block, 72 is a guide rail, 73 is a dovetail groove slide block, 74 is a mounting table, 75 is a driving lead screw, 76 is a driven bevel gear, 77 is a biaxial stepping motor, the drive bevel gear 78 and the drive nut 79.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1
When a patient is fixed before radiotherapy, an operator is required to manually push the edges of the vacuum negative pressure pads on two sides of the patient to fit the patient, but the vacuum negative pressure pads are continuously pumped to carry out shaping, so that when the operator pushes the other edge of the vacuum negative pressure pad after pushing the edge of the single-side vacuum negative pressure pad, the other edge of the vacuum negative pressure pad cannot be pushed to effectively touch the body of the patient due to hardening of the vacuum negative pressure pad after pumping, and thus, the error of the patient is increased due to incapability of restraining the back in the repeated operation process, and the positioning accuracy is reduced; in addition, in the prior art, the vacuum pad and the thermoplastic film are matched and used separately from each other, so that the matching and fixing effects of the vacuum pad and the thermoplastic film cannot be fully exerted.
In order to solve the above problems, the present embodiment provides a posture fixing device for heavy ion radiotherapy of breast tumor, as shown in fig. 1 to 14, which comprises a radiotherapy bed 1, a vacuum pad 2 and a thermoplastic film 3, wherein the left and right sides of the thermoplastic film 3 are fixed with frames 31, which are used for fixing the thermoplastic film.
A back support frame 4 is matched and arranged on the radiotherapy bed 1 and used for mounting the vacuum pad 2 and the thermoplastic film 3; back support frame 4 includes from last three backup pads that parallel interval set up down, and the vacuum pad is installed on top layer backup pad 41 along vertical matching, and the mode that vacuum pad 2 was installed on top layer backup pad 41 has the multiple, for example: the bottom edge of vacuum pad is equipped with a plurality of kellies 21, and top backup pad 41 up end and the corresponding department of vacuum pad kellies position have a plurality of kellies holes, and the vacuum pad is laid on top backup pad 41, and the kellies of vacuum pad bottom insert respectively and prop backup pad 41 correspond the kellies downthehole.
Four top angles of the bottom surface of the top supporting plate 41 are vertically and vertically fixed with guide supporting rods 44, four top angles of the middle supporting plate 42 and the bottom supporting plate 43 are vertically provided with guide sliding holes 45 and are sleeved on the guide supporting rods 44 on the adjacent sides in a matching manner, so that the middle supporting plate and the bottom supporting plate can horizontally slide up and down along the guide supporting rods 44.
The positions of the radiotherapy bed corresponding to the guide supporting rods are vertically provided with sliding holes 11, and the guide supporting rods below the bottom supporting plate are vertically inserted into the corresponding sliding holes and can vertically slide.
All match on middle level backup pad 42 and the bottom backup pad 43 and install and support hold-down mechanism, support hold-down mechanism 5 and include gasbag support piece 51 and arm lock group 52, gasbag support piece 51 matches and installs in the backup pad to be connected with top backup pad bottom surface, and be equipped with discharge valve on gasbag support piece 51 for control the interval between two adjacent backup pads when the top backup pad is pressed, specifically:
the support plate can be of various types, for example: the air bag supporting piece is a longitudinal strip-shaped air bag which is filled with high pressure, and the upper end surface and the lower end surface of the longitudinal strip-shaped air bag are respectively connected with the end surfaces of the supporting plates on the adjacent sides; and the air outlet of the strip-shaped air bag is provided with a connecting pipe, the other end of the connecting pipe outwards extends out of the back support frame, and an exhaust valve is installed and arranged outside the back support frame through the connecting pipe.
Clamping arm sets 52 are symmetrically fixed on supporting plates on the left side and the right side of the air bag supporting piece 51, each clamping arm set 52 comprises a plurality of clamping arm units 53 arranged at intervals along the longitudinal direction, the mounting positions of the clamping arm units on the middle supporting plate and the bottom supporting plate are alternately arranged along the longitudinal direction, a yielding notch 46 is arranged on the supporting plate above each clamping arm unit, and the yielding notches 46 are outwards transversely arranged along the transverse direction.
as shown in fig. 7 and 8, fixing bases 534 are respectively sleeved at the front end and the rear end of a fixing shaft 531, the fixing bases 534 are fixedly connected with a lower supporting plate through bolts, a shaft sleeve 435 is sleeved on the fixing shaft 531 between the two fixing bases 534, the shaft sleeve 535 can rotate on the fixing shaft, the head ends of arc-shaped clamping arms are welded to the outer annular surface of the shaft sleeve, the outer annular surface of the other side of the shaft sleeve is connected with a driving control element 533, the driving control element 533 comprises an arc-shaped driving rod, one end of the arc-shaped driving rod is welded to the outer annular surface of the upper portion of the shaft sleeve, the other end of the arc-shaped driving rod is arranged upwards and is in abutting contact with the bottom surface of the upper supporting plate, when the distance between the two adjacent supporting plates is reduced, the upper supporting plate can press the arc-shaped driving rod to drive the shaft sleeve to rotate, and the shaft sleeve can drive the arc-shaped clamping arms to inwards turn around the fixing shaft when rotating.
Thus, when the vacuum pad 2 is used, as shown in fig. 11, after a patient lies on the vacuum pad 2 on the top supporting plate 41, when the vacuum pad 2 is pumped and shaped, the exhaust valve of the air bag support member 51 between the top supporting plate 41 and the middle supporting plate 42 is opened, and during the process of pressurized exhaust of the air bag support member 51 between the top supporting plate and the middle supporting plate, the top supporting plate presses down the driving control members of the clamp arm units on the left side and the right side of the middle supporting plate to drive the arc-shaped clamp arms in the clamp arm units on the left side and the right side of the middle supporting plate to rotate around the fixed shaft in opposite directions to be in contact with the edges of the vacuum pads on the adjacent sides and push the edges of the vacuum pad inwards, so that the edges at the two ends of the vacuum pad can be pushed to fit with the body of the patient at the same time during the process of air pumping plasticity, thereby not only reducing the workload of operators, but also effectively solving the time difference caused by the pushing of the two sides of the existing vacuum negative pressure pad, and the problem that the vacuum negative pressure pad can not be effectively attached to the skin of the back of the patient occurs.
Further, as shown in fig. 3 and 4, a plurality of body film bayonets 47 are longitudinally spaced at the left and right edges of the top supporting plate 41, the number of the body film bayonets 47 is the same as the number of the arc-shaped clamping arms 532 on the bottom supporting plate 43, and the body film bayonets are located on the rotation path corresponding to the arc-shaped clamping arms.
The bottom symmetry of top layer backup pad left and right sides is equipped with the frame fastener for the solid frame of card, specifically:
as shown in fig. 10, the frame fastener comprises a plurality of U-shaped buckles 6 arranged at intervals along the longitudinal direction, as shown in fig. 12, the frame 31 at the left and right ends of the thermoplastic film 3 bypasses the U-shaped buckles of the top layer support plate and is respectively inserted into the bottom of the corresponding side of the top layer support plate, and the distance between the U-shaped buckle and the opening of the upper body film bayonet of the adjacent side top layer support plate is larger than the width of the frame, when in use, after the vacuum cushion finishes the air extraction and plasticity, the heat softened thermoplastic film is covered on the chest of a patient, then the frames at the left and right ends of the thermoplastic film bypass the top layer support plate and are respectively inserted into the U-shaped buckles at the bottom of the corresponding side of the top layer support plate, then in the process that an operator presses the thermoplastic film on the chest of the patient to fit the contour of the chest, the exhaust valve of the air bag support between the middle layer support plate and the lower layer support plate is opened, as shown in fig. 12-13, in the process of pressurized exhaust of an air bag supporting piece between a middle layer supporting plate and a bottom layer supporting plate, the middle layer supporting plate presses down driving control pieces of clamping arm units on the left side and the right side of the bottom layer supporting plate to drive arc-shaped clamping arms in the clamping arm units on the left side and the right side of the bottom layer supporting plate to rotate oppositely around a fixed shaft to press a softened thermoplastic film to deform and generate a bulge to extend into a body film bayonet, so that after the thermoplastic film is cooled and hardened, the front inner wall and the rear inner wall of the bulge receptor film bayonet in the body film bayonet on the left side and the right side of the thermoplastic film are blocked by the front inner wall and the rear inner wall of the bulge receptor film bayonet in the body film bayonet, the position of the thermoplastic film can be limited, the longitudinal displacement of the thermoplastic film in the process of restricting the body position of a patient is avoided, the arc-shaped clamping arms on the middle layer supporting plates on the left side and the right side of the vacuum pad are covered by the cooled and hardened thermoplastic film to form an integral part for fixing the body position of the patient, and the vacuum pad and the thermoplastic film are matched and fixed to play a full play role, the fixing effect of the body position of the patient is improved.
Example 2
The embodiment 2 is different from the embodiment 1 in that a torsion spring is arranged between the shaft sleeve and the fixed shaft, the torsion spring can drive the shaft sleeve to rotate outwards around the fixed shaft in a natural state, so that the top end of the arc-shaped driving rod is in top contact with the bottom surface of the upper supporting plate, the air bag supporting piece is inflated after radiotherapy treatment is completed, and when the distance between the upper supporting plate and the lower supporting plate is recovered, the torsion spring can drive the shaft sleeve to drive the arc-shaped clamping arm and the arc-shaped driving rod to synchronously rotate and recover, so that the vacuum pad and the thermoplastic film can be conveniently detached.
Example 3
Example 4
As shown in fig. 15-17, the arc-shaped clamp arm 532 of the clamp arm unit on the middle support plate includes an arc-shaped main rod 5321, an arc-shaped support rod 5322 and a bar-shaped rotating base 5323, the head end of the arc-shaped main rod is welded to the outer ring surface of the shaft sleeve of the clamp arm unit on the middle support plate, and the other end of the arc-shaped main rod passes through the corresponding abdicating notch of the top support plate and extends to the upper side of the top support plate; the strip-shaped rotating base is longitudinally arranged, a shaft sleeve 5324 is arranged in the middle of the bottom surface of the strip-shaped rotating base, the end part of the arc-shaped main rod above the top supporting plate is sleeved in the shaft sleeve of the strip-shaped rotating base through a bearing, a plurality of arc-shaped supporting rods are longitudinally fixed at intervals at the upper end of the strip-shaped rotating base, and the arc-shaped supporting rods and the opening sides of the arc-shaped main rods are both arranged towards the vacuum pad, so that an arc-shaped rod with a rotatable upper arc section is formed by combination; when using, when the interval shrinks between two adjacent backup pads, the backup pad of upside can oppress the arc actuating lever and order about the axle sleeve and rotate, can drive the arc arm lock when the axle sleeve rotates and push the vacuum pad around the inside upset of fixed axle, when rotating the arc branch of base top and patient's health contact, because the outline non-plane of patient's chest both sides, when rotating arbitrary arc branch and patient's health conflict on the base, it can use the secondary contact point to rotate around arc mobile jib top for pushing away the top, make the arc branch on the rotating base can all conflict with the patient, even exert pressure to the vacuum pad, make the vacuum pad edge can be perfect laminate mutually with human chest both sides profile, the moulding effect of vacuum pad has been improved.
Example 5
Example 5 differs from example 4 in that the balloon support is different.
As shown in fig. 18-19, the airbag supporting member includes a spring airbag and an air tube, a plurality of spring airbags are disposed at the front end and the rear end of the supporting plate along the transverse interval, and the spring airbags in the same supporting plate are all connected in series through the air tube to form a supporting airbag group, a connecting tube is disposed on the air outlet of the supporting airbag group, the other end of the connecting tube extends outwards to form a back supporting frame, and an exhaust valve is installed, the exhaust valve is disposed outside the back supporting frame through the connecting tube, when the supporting airbag group is pressed downwards, the spring airbags in the supporting airbag group can be pressed synchronously, and when the exhaust valve is opened, high-pressure gas in the spring airbags in the supporting airbag group can be discharged outwards, so that the supporting force of the supporting airbag group is gradually reduced, and the upper supporting plate is close to the lower supporting plate.
All be equipped with position control mechanism in middle level backup pad and the bottom backup pad, position control mechanism and two arm lock group joint in the same backup pad can control two arm lock groups in the same backup pad through position control mechanism and slide in opposite directions or opposite direction in opposite directions to can adjust the distance between two arm lock groups in the same backup pad according to patient's size.
The position adjusting mechanism comprises a bar-shaped driving block 71, a driving assembly and a controller, two driving blocks 71 are arranged on the supporting plate between the two clamping arm groups 52 at intervals along the transverse direction, the two driving blocks 71 can transversely slide along the supporting plate in parallel, and the connecting modes of the driving blocks 71 and the supporting plate are various, such as: two dovetail groove guide rails 72 are longitudinally arranged on the support plate in parallel at intervals, the dovetail groove guide rails 72 are transversely embedded on the support plate, two dovetail groove sliding blocks 73 are installed on each dovetail groove guide rail 72 in a matched mode, the dovetail groove sliding blocks 73 can slide along the corresponding dovetail groove guide rails, the front end and the rear end of the driving block 71 are fixedly connected with the dovetail groove sliding blocks on the same side of the two dovetail groove guide rails respectively, and therefore the driving block can slide transversely along the support plate through the dovetail groove sliding blocks and the dovetail groove guide rails.
The one end that the drive block 71 pressed from both sides the arm group towards adjacent side is fixed with a plurality of mount tables 74 along longitudinal separation, the quantity and the position of mount table 74 all correspond with the quantity and the position of arm lock unit 53 in the arm group of adjacent side clamp, the arm lock unit in the arm group of clamp is installed respectively on corresponding the mount table, drive assembly sets up in the backup pad between two drive blocks, and be connected with the controller, can order about two drive blocks through controller control drive assembly and remove in opposite direction in step mutually, thereby adjust the distance between the arm group of clamp, specifically:
the drive assembly includes two control drive lead screws 75 that set up along vertical interval, is equipped with the biax step motor who is connected with controller control in the backup pad between two drive lead screws 75, and drive lead screw 75 is along horizontal setting, and the fixed cover in middle part of drive lead screw is equipped with driven bevel gear 76, and the drive lead screw 75 of the driven bevel gear left and right sides goes up the screw thread sets up opposite direction, and sets up opposite direction with the screw thread on two drive lead screws of one side, promptly: the threads of the left driving screw rod of the front driven bevel gear are arranged along the clockwise direction, and the threads of the left driving screw rod of the rear driven bevel gear are arranged along the anticlockwise direction; the driving screw rods on the left side and the right side of the driven bevel gear 76 are symmetrically sleeved with driving nuts 79 in a matching way, and the driving nuts are respectively welded with the driving blocks on the adjacent sides; the double-shaft stepping motor is longitudinally arranged, two motor rotating shafts of the double-shaft stepping motor are respectively meshed with the driven bevel gears on the driving screw rods on the adjacent sides through the driving bevel gear, when the controller controls the driving stepping motor to drive the two driving screw rods 75 to rotate, the two driving screw rods can synchronously rotate in opposite directions, because the thread arrangement directions on the two driving screw rods on the same side are opposite, the two rotating driving screw rods can drive the two driving blocks to drive the clamping arm units on the mounting table to move towards each other or to move away from each other in opposite directions through the driving nuts 79 on the two ends, thereby can adjust the distance between two arm lock groups in the same backup pad according to patient's physique when using, avoid exerting pressure great or leading to arm lock unit arc arm lock can not take place with the problem of patient's health contact because of the fat arm unit arc arm lock of leading to exerting pressure great or leading to arm lock unit arc arm lock because of patient's physique foot is thin.
Furthermore, in order not to affect the normal movement of the arc-shaped clamping arm in the clamping arm unit, the position of the driving screw 75 is set to be avoided from the clamping arm unit.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A body position fixing device for heavy ion radiotherapy of breast tumors comprises a radiotherapy bed, a vacuum pad and a thermoplastic film, wherein frames are fixed on the left side and the right side of the thermoplastic film; sliding holes are vertically formed in the positions, corresponding to the guide supporting rods, of the radiotherapy bed, and the guide supporting rods below the bottom supporting plate are vertically inserted into the corresponding sliding holes and can vertically slide; the middle supporting plate and the bottom supporting plate are respectively provided with a supporting and pressing mechanism in a matching way, each supporting and pressing mechanism comprises an air bag supporting piece and a clamping arm group, the air bag supporting pieces are arranged on the supporting plates in a matching way and are connected with the bottom surfaces of the upper supporting plates, and the air bag supporting pieces are provided with exhaust valves for controlling the distance between the two adjacent supporting plates when the upper supporting plates are pressed; clamping arm sets are symmetrically fixed on the supporting plates on the left side and the right side of the air bag supporting piece, each clamping arm set comprises a plurality of clamping arm units which are arranged at intervals along the longitudinal direction, the positions of the clamping arm units on the middle supporting plate and the bottom supporting plate are alternately arranged, a yielding notch is arranged on the supporting plate above each clamping arm unit, and the yielding notches are outwards arranged along the transverse direction; the clamping arm unit comprises a fixed shaft, arc-shaped clamping arms and a driving control piece, the fixed shaft is transversely fixed on the supporting plates, the head ends of the arc-shaped clamping arms are rotatably sleeved on the fixed shaft and are connected with the driving control piece, the tail ends of the arc-shaped clamping arms on the middle supporting plate penetrate through the corresponding abdicating gaps above the tail ends of the arc-shaped clamping arms to extend to the outer side of the vacuum pad, the tail ends of the arc-shaped clamping arms on the bottom supporting plate penetrate through the corresponding abdicating gaps above the tail ends of the arc-shaped clamping arms to extend to one side of the top supporting plate, and when the distance between two adjacent supporting plates is reduced, the supporting plates above the arc-shaped clamping arms can drive the arc-shaped clamping arms to rotate inwards through the driving control piece; a plurality of body film bayonets are symmetrically arranged at the edges of the left end and the right end of the top layer supporting plate at intervals along the longitudinal direction, the number of the body film bayonets is the same as that of the arc-shaped clamping arms on the bottom layer supporting plate, and the body film bayonets are arranged on the rotating paths of the corresponding arc-shaped clamping arms; frame fasteners are symmetrically arranged at the bottoms of the left side and the right side of the top layer supporting plate and used for fastening frames, the body film bayonets at the left end and the right end of the upper layer supporting plate and the opening end of the abdicating notch are blocked by the fixed thermoplastic film, and the arc-shaped clamping arms on the middle layer supporting plates at the left side and the right side of the vacuum pad are positioned in the coating area of the thermoplastic film.
2. The posture fixing device for heavy ion radiotherapy of breast tumor as claimed in claim 1, wherein the bottom edge of the vacuum pad is provided with a plurality of clamping rods, the upper end surface of the top supporting plate is provided with a plurality of clamping rod holes at the positions corresponding to the clamping rods of the vacuum pad, the vacuum pad is laid on the top supporting plate, and the clamping rods at the bottom of the vacuum pad are inserted into the corresponding clamping rod holes of the top supporting plate respectively.
3. The posture fixing device for heavy ion radiotherapy of breast tumor as claimed in claim 1, wherein the air bag supporting member is a longitudinal strip air bag, and the upper and lower end faces of the longitudinal strip air bag are respectively connected with the end faces of the supporting plates at the adjacent sides; and the air outlet of the strip-shaped air bag is provided with a connecting pipe, and the other end of the connecting pipe extends outwards to form a back support frame and is provided with an exhaust valve.
4. The posture fixing device for heavy ion radiotherapy of breast tumor as claimed in claim 1, wherein the radiotherapy bed at the front side of the back support is provided with a headrest seat in a matching way, and the headrest seat is provided with a headrest for skimming.
5. The position fixing device for heavy ion radiotherapy of breast tumor according to claim 1, wherein the position of the radiotherapy bed for mounting the back support frame is vertically provided with an accommodating groove, the shape of the accommodating groove is matched with that of the back support frame, and the four sliding holes are arranged at the bottom of the accommodating groove.
6. The position fixing device for heavy ion radiotherapy of breast tumor according to claim 1, wherein the front and rear ends of the fixing shaft are sleeved with fixing seats, and the fixing seats are fixedly connected with the lower supporting plate through bolts.
7. The position fixing device for heavy ion radiotherapy of breast tumor as claimed in claim 1, wherein the fixing shaft is sleeved with a shaft sleeve, the shaft sleeve can rotate on the fixing shaft, the head end of the arc-shaped clamping arm is welded to the outer ring surface of the shaft sleeve, and the outer ring surface of the other side of the shaft sleeve is connected to the driving control element.
8. The position fixing device for heavy ion radiotherapy of breast tumor as claimed in claim 7, wherein the driving control member comprises an arc driving rod, one end of the arc driving rod is welded to the outer circumferential surface of the upper portion of the shaft sleeve, and the other end of the arc driving rod is disposed inward and upward and contacts with the bottom surface of the upper supporting plate.
9. The position fixing device of claim 8, wherein a torsion spring is disposed between the sleeve and the fixing shaft, and the torsion spring naturally drives the sleeve to rotate outward around the fixing shaft, so that the top end of the arc-shaped driving rod contacts the bottom surface of the upper supporting plate.
10. The posture fixing device for the heavy ion radiotherapy of the breast tumor as claimed in claim 1, wherein the frame fastener comprises a plurality of U-shaped fasteners arranged at intervals along the longitudinal direction, the frames at the left and right ends of the thermoplastic film are respectively inserted into the U-shaped fasteners at the bottom of the corresponding side of the top layer support plate by bypassing the top layer support plate, and the distance between the U-shaped fasteners and the opening of the body film bayonet of the top layer support plate at the adjacent side is greater than the width of the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210546532.XA CN114849088A (en) | 2022-05-20 | 2022-05-20 | Position fixing device for heavy ion radiotherapy of breast tumor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210546532.XA CN114849088A (en) | 2022-05-20 | 2022-05-20 | Position fixing device for heavy ion radiotherapy of breast tumor |
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|---|---|
| CN114849088A true CN114849088A (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210546532.XA Pending CN114849088A (en) | 2022-05-20 | 2022-05-20 | Position fixing device for heavy ion radiotherapy of breast tumor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115844676A (en) * | 2023-03-02 | 2023-03-28 | 惠州市第六人民医院 | Gynaecology and obstetrics's inspection seat |
-
2022
- 2022-05-20 CN CN202210546532.XA patent/CN114849088A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115844676A (en) * | 2023-03-02 | 2023-03-28 | 惠州市第六人民医院 | Gynaecology and obstetrics's inspection seat |
| CN115844676B (en) * | 2023-03-02 | 2023-04-25 | 惠州市第六人民医院 | Gynecological examination seat |
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