CN106362307B - Tenon-and-mortise type positioning and fixing frame for head and neck in radiotherapy - Google Patents
Tenon-and-mortise type positioning and fixing frame for head and neck in radiotherapy Download PDFInfo
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- CN106362307B CN106362307B CN201610858904.7A CN201610858904A CN106362307B CN 106362307 B CN106362307 B CN 106362307B CN 201610858904 A CN201610858904 A CN 201610858904A CN 106362307 B CN106362307 B CN 106362307B
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- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
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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
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1028—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy using radiation sources applied onto the body
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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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Abstract
The invention provides a tenon-and-mortise type positioning and fixing frame for head and neck in radiotherapy, which consists of a fixing frame, a headrest and a head membrane. The invention mainly adopts the mortise and tenon joint structure design principle and the limiting and fixing technology of conformal outer contours, and is matched with a special fixing head film to achieve accurate positioning. Is particularly suitable for the human head and face with large fluctuation difference of contour curves. The invention completely realizes the limit fixation of the head of the human body, and can reach or approach zero displacement; the cross stress structure design of the tenon-and-mortise pressing plate and the locking plate technology is scientific, and the fixed loosening during the use period is not needed to be worried about; the concave headrest groove can avoid human body injury events such as clamping and squeezing; the humanized detailed design can simplify and facilitate the operation of the technician. Effectively solves all the disadvantages and shortcomings of the prior head radiotherapy positioning structure. The invention has the advantages of reasonable design, convenient and safe operation, environmental protection, obvious fixing effect, strong practicability and universality.
Description
Technical Field
The invention belongs to the technical field of human body positioning devices in radiotherapy, and relates to a tenon-and-mortise type positioning and fixing frame for head and neck in radiotherapy, which is a device for positioning the head and neck in radiotherapy, is suitable for fixing parts with large curve fluctuation difference of the head, the neck and the shoulders of a human body, and is an important component for accurate positioning and implementation in modern radiotherapy.
Background
The low-temperature thermoplastic plate (film) is a special synthetic high-molecular polyester, is a novel medical material which is processed by a series of physical and chemical methods and is used for manufacturing materials such as radiotherapy body position fixing, orthopedics external fixation, orthotics, braces and the like. The material has the outstanding performances of no ray absorption, good molding effect after heating and softening, unique shape memory function (secondary heating, secondary molding or local heating for secondary molding when the molding is not satisfactory) and the like, is simple to operate and convenient to fix, and is the most ideal external fixing material in the current radiotherapy positioning.
Currently, the fixation of patients in the radiotherapy mostly adopts a mode of combining low-temperature thermoplastic plates with mechanical fixation to achieve the positioning purpose. Requirements for positioning of radiotherapy: the fixing accuracy is required in the three-dimensional directions of up-down, left-right and front-back, and the movement error is less than 5MM. The head and neck part has compact anatomical structure and is distributed with various important organs. The fixation is limited by the moving organs such as the mandible, the cervical vertebra and the like, and the physiological activities such as respiration, heartbeat and the like. The above factors cause the difficulty of radiotherapy fixing control errors of the head and the neck. Although the mechanical fixing mode is various on the market, most of the detection results show that the movement error exists in the actual use effect.
The current radiotherapy positioning is insufficient: a fixed gap exists between the low-temperature thermoplastic film and the bottom plate; locking and falling are easy to occur in the fixing process, and the fixing fails; the fixing process causes the accident of skin pinching and clamping injury (on the shoulder); the fixing fittings are designed in a split manner and are easy to lose; the fixed locking mechanical structure is directly stressed; the operation is laborious and tedious. Based on the defects and shortcomings, a radiotherapy positioning and fixing device and a related fixing head membrane matched with the radiotherapy positioning and fixing device are designed.
Disclosure of Invention
The invention aims to solve the defects of traditional head radiotherapy positioning and provides a device for accurate radiotherapy positioning, namely a tenon-and-mortise type radiotherapy head and neck positioning fixing frame. The invention mainly adopts the mortise and tenon joint structure design principle and the limiting and fixing technology of conformal outer contours, and is matched with a special fixing head film to achieve accurate positioning. Is particularly suitable for the human head and face with large fluctuation difference of contour curves.
The invention relates to a tenon-and-mortise type positioning and fixing frame for head and neck in radiotherapy, which consists of a fixing frame, a headrest and a head membrane, wherein the fixing frame, the headrest and the head membrane are required to be matched for use.
1. The fixing frame is composed of a bottom plate slope 300, a bottom plate positioning hole 299, a bottom plate composite positioning hole 301, a mortise-tenon type locking assembly 302, a limiting foot hole 297, a headrest groove 298, a head bottom plate 147, a single locking piece locking assembly 289 and a shoulder bottom plate 290. The main structure is composed of a head bottom plate 147 with an isosceles trapezoid structure and a shoulder bottom plate 290 with a rectangular structure. A rectangular headrest slot 298 is centrally located in the surface of the head floor 147 and is aligned with the lower edge thereof. The two mortise type locking components 302 are arranged on two long edges of the headrest groove 298 in an opposite manner, the lower ends are free and flush with the edge of the head bottom plate 147, the upper ends are respectively connected with two edges of the single locking plate locking component 289, and the two mortise type locking components form a C-shaped structure. The depressions in the surface of the headrest groove 298 form three limiting foot holes 297 of a cone structure, which are located in the center of the headrest groove 298 and are arranged in a shape like a Chinese character 'pin'. The quadrilateral shoulder base 290 is connected to the edge of the head base 147, and has single locking piece locking assemblies 289 respectively arranged at the two short edges. The surface of the shoulder bottom plate 290 is provided with a bottom plate composite positioning hole 301 and a bottom plate positioning hole 299 near the two single locking piece locking assemblies 289, and the bottom plate slope 300 is connected with the free long edge of the shoulder bottom plate 290.
(1) The mortise type locking assembly 302 is composed of a fixing groove wall 19, a fixing tenon 20, a fixing mortise 23, a pressing plate 24, a fixing bottom plate 25, a pressing plate positioning bean 32, a pressing plate positioning groove 33, a mortise type pressing plate structure 102 and a locking plate structure 104. The two mortise-tenon type pressure plate structures 102 are connected with the fixed groove wall 19 into a whole through the fixed bottom plate 25; three fixing tenons 20 which are distributed at equal intervals are arranged on the fixing groove wall 19; corresponding to the three fixing rivets 23 on the pressure plate 24; two pressing plate positioning recesses 33 are arranged among the three fixing rivets 23 on the front surface of the pressing plate 24; two pressing plate positioning beans 32 are arranged among the three fixing mortises 23 on the back surface of the pressing plate 24; the middle of the intersecting edge of the fixing groove wall 19 and the fixing base plate 25 is designed with two opposite locking plate structures 104. The mortise type pressure plate structure 102 is composed of a fixed groove wall 19, a fixed tenon 20, a pressure plate base 21, a pressure plate clearance 22, a fixed mortise 23, a pressure plate 24, a fixed bottom plate 25, a pressure plate shaft 26 and a tenon grain 27. The fixed slot wall 19 is a wedge-shaped body with a thin upper part and a thick lower part, and is vertical to one edge of the fixed bottom plate 25; a pressure plate base 21 is designed in the middle of the bottom end of the fixed groove wall 19, and a pressure plate shaft 26 runs in the middle; one end of the pressing plate 24 is free, and the middle part of the other end is provided with a pressing plate clearance 22 and connected with a pressing plate shaft 26 to be connected with the pressing plate base 21 into a whole; the pressing plate 24 is provided with a fixing mortise 23, which corresponds to the fixing tenon 20 on the fixing groove wall 19 and is provided with a plurality of circles of tenon grains 27. The locking plate structure 104 is composed of a locking plate shaft 28, a locking plate 29, a locking plate positioning concave 30 and a locking plate pressing spring 31. The locking plate 29 is connected with the fixed groove wall 19 through a locking plate shaft 28 at the bottom; wherein, the outer side end of the locking plate shaft 28 is provided with a locking plate hold-down spring 31; the back of the head end of the locking plate 29 is designed with a locking plate positioning concave 30.
(2) The single locking piece locking assembly 289 is composed of a fixing groove wall 19, a fixing tenon 20, a fixing mortise 23, a pressing plate 24, a fixing bottom plate 25, a pressing plate positioning groove 33, a mortise type pressing plate structure 102 and a locking piece structure 104. The two mortise-tenon type pressure plate structures 102 are connected with the fixed groove wall 19 into a whole through the fixed bottom plate 25; two fixing tenons 20 which are distributed at equal intervals are arranged on the fixing groove wall 19; two fixing rivets 23 on a pressing plate 24 correspond to the fixing rivets; a pressing plate positioning concave 33 is arranged between the two fixing rivets 23 on the front surface of the pressing plate 24; a pressing plate positioning bean 32 is arranged between the two fixing mortises 23 on the back surface of the pressing plate 24; the middle part of the intersecting edge of the fixing groove wall 19 and the fixing bottom plate 25 is designed with a locking plate structure 104. The mortise type pressure plate structure 102 and the locking plate structure 104 are described in the same way as in the description of the step (1).
2. The headrest 291 is composed of a headrest seat 135, a limit foot 146, occipital flexure 292 and neck flexure 293. The main structure of the pillow base is a pillow base 135 which is approximately cuboid and is divided into a front surface and a back surface. The front surface is the surface which is properly arranged and the back surface faces to a user, and the upper surface is a wave-shaped elastic structure with two bending radians. The occipital bent and the cervical bent are arranged from top to bottom in sequence. Three cone-shaped limiting feet 146 are protruded from the reverse surface of the headrest seat 135, are distributed in a structure like a Chinese character 'pin', and correspond to the limiting foot holes 297 on the headrest groove 298.
3. The head mask is composed of a shoulder mask 1, shoulder strips 2, mask mortises 3, strip positioning beans 4, strip handles 5, noodles 6, top strips 7, top mask gaps 9, neck mask gaps 12, neck masks 18, a facial mask 34 and a top mask 35. The head membrane main body structure is formed by sequentially connecting four sheet membranes, namely a top membrane 35, a facial membrane 34, a neck membrane 18, a shoulder membrane 1 and the like end to end. The top film 35 is isosceles trapezoid, and two waist edges are dissociated to form a top film gap 9. The upper edge is connected with a top strip 7, and the middle part of the connecting edge is provided with a strip handle 5; two round hole structures, namely film mortises 3, penetrating through the top strip 7 are respectively distributed at two ends close to the top strip 7, and the strip positioning beans 4 are positioned on the surface of the middle part of the top strip 7. The lower edge of which is attached to the mask 34. The facial mask 34 is quadrilateral, the left edge and the right edge of the facial mask are respectively connected with a noodle 6, and the middle part of the connecting edge is provided with a strip handle 5; the three membrane mao 3 equidistance distribute and run through noodless 6, and the surperficial equidistance is equipped with strip location beans 4 between it. The lower edge of the mask 34 is attached to the neck membrane 18. The neck membrane 18 is in an isosceles trapezoid shape, and two waist edges are dissociated to form a neck membrane gap 12; the lower edge of which is connected to the shoulder membrane 1. The shoulder film 1 is quadrilateral, the left side and the right side of the shoulder film are respectively connected with a shoulder strip 2, and the middle parts of the connecting edges are respectively provided with a strip handle 5; two round hole structures which penetrate through the membrane strip, namely membrane mortises 3, are respectively distributed at two ends of the shoulder strip 2, and the strip positioning beans 4 are positioned on the surface of the middle part of the top strip 7. The lower edge is free.
The invention relates to a positioning and fixing system for accurate radiotherapy of head and neck. The head of a human body can be completely limited and fixed, and zero displacement can be reached or approached; the cross stress structure design of the tenon-and-mortise pressing plate and the locking plate technology is scientific, and the fixed loosening during the use period is not needed to be worried about; the concave headrest groove can avoid human body injury events such as clamping and squeezing; the humanized detailed design can simplify and facilitate the operation of the technician. Effectively solves all the disadvantages and shortcomings of the prior head radiotherapy positioning structure. The invention has the advantages of reasonable design, convenient and safe operation, environmental protection, obvious fixing effect, strong practicability and universality.
Drawings
Fig. 1 is a schematic view of the structure of the fixing frame and the headrest 291.
Fig. 2 is a schematic view of the head membrane structure.
Fig. 3 and 4 are schematic structural diagrams of the mortise and tenon type locking assembly 302.
FIG. 5 is a schematic structural view of a mortise-tenon type pressing plate structure 102
Fig. 6 and 7 are schematic structural views of the locking plate structure 104.
Fig. 8 is a schematic diagram of a single locking piece locking assembly 289.
Fig. 9 and 10 are schematic structural views of the headrest 291.
Detailed Description
The invention is further explained by the accompanying drawings and examples.
Example 1 tenon-and-mortise type positioning and fixing frame for head and neck in radiotherapy
Referring to fig. 1 and 2, the present invention is composed of a fixing frame, a headrest and a head membrane, which are used in cooperation.
Referring to fig. 1, the fixing frame is composed of a bottom plate slope 300, a bottom plate positioning hole 299, a bottom plate composite positioning hole 301, a mortise and tenon type locking assembly 302, a limiting foot hole 297, a headrest groove 298, a head bottom plate 147, a single locking piece locking assembly 289, a shoulder bottom plate 290 and a headrest 291. The main structure is composed of a head bottom plate 147 with an isosceles trapezoid structure and a shoulder bottom plate 290 with a rectangular structure. A rectangular headrest slot 298 is centrally located in the surface of the head floor 147 and is aligned with the lower edge thereof. Two mortise type locking components 302 are arranged on two long edges of the headrest groove 298 in a relative manner, the lower ends are free and flush with the edge of the head bottom plate 147, the upper ends are respectively connected with two edges of the single locking piece locking component 289, and the three components form a C-shaped structure. The depressions in the surface of the headrest groove 298 form three limiting foot holes 297 of a cone structure, which are located in the center of the headrest groove 298 and are arranged in a shape like a Chinese character 'pin'. The three holes will correspond to the three feet of the projection of the head rest 291, together forming a displacement-limiting effect on the head rest. The quadrilateral shoulder bottom plate 290 is connected to the edge of the head bottom plate 147, and the two short edges thereof are respectively provided with a single locking piece locking component 289 to jointly complete the limit locking of the shoulder position of the patient. The surface of the shoulder bottom plate 290 close to the two single locking piece locking assemblies 289 is respectively provided with a bottom plate composite positioning hole 301 and a bottom plate positioning hole 299, and the two holes penetrate through the shoulder bottom plate 290 to limit the fixed frame (displacement occurs) together. The floor ramp 300 is connected to the free long side end of the shoulder floor 290.
(1) Referring to fig. 3, 4 and 5, the "mortise and tenon type locking assembly 302" is composed of a fixing groove wall 19, a fixing tenon 20, a fixing mortise 23, a pressing plate 24, a fixing bottom plate 25, a pressing plate positioning bean 32, a pressing plate positioning groove 33, a mortise and tenon type pressing plate structure 102 and a locking plate structure 104. The two mortise-tenon type pressure plate structures 102 are connected into a whole in parallel through the fixed bottom plate 25 and the fixed groove wall 19; three fixing tenons 20 which are distributed at equal intervals are arranged on the fixing groove wall 19; corresponding to the three fixing rivets 23, the three fixing rivets penetrate through the pressing plate 24; two pressing plate positioning recesses 33 are arranged between the three fixing rivets 23 on the front surface of the pressing plate 24, and correspond to the positioning beans 4 on the matched membrane pressing strip, so that the accurate positioning (pressing strip 4) is realized; two pressing plate positioning beans 32 are arranged among the three fixing mortises 23 on the back surface of the pressing plate 24, and a locking plate positioning concave 30 on the back surface of a locking plate 29 is corresponding to the pressing plate positioning beans and plays a role in accurately positioning and fastening the pressing plate 24; the middle of the intersecting edge of the fixing groove wall 19 and the fixing bottom plate 25 is designed with two locking plate structures 104. Referring to fig. 5, the "mortise-tenon type pressing plate structure 102" is composed of a fixing groove wall 19, a fixing tenon 20, a pressing plate base 21, a pressing plate clearance 22, a fixing mortise 23, a pressing plate 24, a fixing bottom plate 25, a pressing plate shaft 26 and a tenon grain 27. The fixed slot wall 19 is a wedge-shaped body with a thin upper part and a thick lower part, which is vertically connected with one edge of the fixed bottom plate 25, and the structural shape of the wedge-shaped body of the fixed slot wall 19 enables better adhesion and a curved surface structure suitable for a human body. A pressure plate base 21 is designed in the middle of the bottom end of the fixed groove wall 19, and a pressure plate shaft 26 runs in the middle; one end of the pressing plate 24 is free, the middle part of the other end is provided with a pressing plate clearance 22, a pressing plate shaft 26 is connected with the pressing plate base 21 into a whole, and the pressing plate 24 can axially rotate along the pressing plate shaft. The pressing plate 24 is designed with a fixing mortise 23, which corresponds to the fixing tenon 20 on the fixing groove wall 19. The fixing tenon 20 is designed into a cone frustum structure with a thick bottom and a thin top, so that linear fastening is realized; the surface of the fixing tenon is distributed with a circle of tenon grains 27, so that the friction force between the fixing mortise 23 and the fixing tenon 20 can be increased. Referring to fig. 6 and 7, the "locking tab structure 104" is comprised of the locking tab shaft 28, the locking tab 29, the locking tab positioning recess 30 and the locking tab hold down spring 31. Two opposite locking plates 29 are connected with the fixed groove wall 19 through a locking plate shaft 28 at the bottom, and the locking plates 29 can do outward rotating motion along the locking plate shaft 28; the outer side end of the locking piece shaft 28 is designed with a locking piece pressing spring 31, and the pressing force is applied to the locking piece 29 to play a role of fastening the pressing plate 24; the back of the head end of the locking plate 29 is designed with a locking plate positioning concave 30.
(2) Referring to fig. 8, the "single locking piece locking assembly 289" is composed of a fixing groove wall 19, a fixing tenon 20, a fixing mortise 23, a pressing plate 24, a fixing bottom plate 25, a pressing plate positioning groove 33, a mortise type pressing plate structure 102 and a locking piece structure 104. The two mortise-tenon type pressure plate structures 102 are connected with the fixed groove wall 19 into a whole through the fixed bottom plate 25; two fixing tenons 20 which are distributed at equal intervals are arranged on the fixing groove wall 19; corresponding to the two fixing rivets 23 on the pressing plate 24; a pressing plate positioning concave 33 is arranged between the two fixing mortises 23 on the front surface of the pressing plate 24; a pressing plate positioning bean 32 is arranged between the two fixing mortises 23 on the back surface of the pressing plate 24; the middle part of the intersecting edge of the fixing groove wall 19 and the fixing bottom plate 25 is designed with a locking plate structure 104. The mortise-tenon type pressing plate structure 102 is described as above with reference to fig. 5. Wherein the "locking tab structure 104" is described above with reference to fig. 6 and 7.
Referring to fig. 9 and 10, the headrest 291 is composed of a headrest seat 135, a restraining foot 146, occipital flexure 292, and neck flexure 293. The main structure of the pillow base is a pillow base 135 which is approximately cuboid and is divided into a front surface and a back surface. Referring to fig. 9, the front side is the side facing the user with the rear side properly installed, and the upper side is a wave-shaped elastic structure with two curved arcs. Occipital flexure and cervical flexure are arranged above and below the pillow. Referring to fig. 10, three cone-shaped limiting feet 146 are protruded from the reverse surface of the headrest seat 135, distributed in a "pin" shape, and correspond to the limiting foot holes 297 on the headrest groove 298. The cooperation can achieve the effect of limiting the headrest movement.
Referring to fig. 2, the head mask is composed of a shoulder mask 1, shoulder strips 2, a mask blank 3, strip positioning beans 4, strip handles 5, noodles 6, top strips 7, top mask gaps 9, neck mask gaps 12, neck masks 18, a mask 34 and a top mask 35. The main structure of the invention is formed by sequentially connecting four sheet films, namely an isosceles trapezoid top film 35, a quadrilateral face film 34, an isosceles trapezoid neck film 18 and a quadrilateral shoulder film 1 end to end, wherein the isosceles trapezoid top film 35 and the right and left waist edges of the neck film 18 are free to form a top film gap 9 and a neck film gap 12 respectively. The lower edge of the top strip 7 is connected with a top film 35, two ends of the top strip are respectively provided with a circular hole structure-film mortise 3 which penetrates through the top strip 7 and can be matched with each other to be sleeved on a matched fixed head frame (bottom plate) to fix a tenon; two positioning beans 4 are designed between the two membrane mortises 3 and can be matched with corresponding accessories to be used for fastening the top strip 7. The two noodles 6 are positioned at the left and right side edges of the facial mask 34, three membrane-rivets 3 are distributed at equal intervals and penetrate through the facial mask strips 6, and can be matched with each other in a shape-fitting manner to be sleeved on a matched fixing head frame (bottom plate) to fix a tenon; the surfaces between which are equidistantly provided with strip positioning beans 4 which can be used in conjunction with corresponding fittings for fastening the noodles 6. The two shoulder strips 2 are positioned at the left and right side edges of the shoulder film 1, and the two film rivets 3 are distributed and penetrate through the two ends of the shoulder strips 2 and can be fitted on the matched fixing head frame (bottom plate) in a shape-fitting manner to fix the tenon; the middle of the surface is provided with a strip positioning bean 4 which can be matched with corresponding accessories for fastening the shoulder strip 2. The middle parts of the connecting edges of the top strip 7 and the top film 35, the noodles 6 and the facial film 34, and the shoulder strip 2 and the shoulder film 1 are respectively provided with a strip handle 5, which is convenient for the installation and the disassembly of the head film, the matched bottom plate and other components.
Example 2: the invention also discloses a using method
The first step is as follows: and (5) preparing. The mount is placed on a swing bed and the headrest is then placed in the headrest channel 298 so that the position restricting feet 146 on the fixed headrest fit into the channel position restricting foot holes 297. Order patient lies flat on the mount for each curved surface of fixed headrest is hugged closely to the head, promptly: the head occiput is in tight contact with the occipital flexure 292 and the neck is in tight contact with the collar 293.
Step two: and (5) drawing the die. The two persons cooperate to carry out the operation together, the invention is immersed in a constant temperature water tank at 60-70 ℃, after the water tank is fully softened, each person respectively lifts the membrane strip handle 5 at one side of each person to cover the head to be fixed, and the head membranes (such as the shoulder membrane 1, the neck membrane 18, the facial membrane 34, the top membrane 35 and the like) at each softened part are stretched through the corresponding membrane strips, so that the stretching coverage length is proper, namely: the noodle 6, top strip 7 and shoulder strip 2 positions must reach the corresponding mortise and tenon type locking assembly 302 and single locking piece locking assembly 289 on the fixing frame.
The third step is: and (5) locking. Referring to fig. 3 and 4, the noodle 6, the top strip 7 and the film mortise 3 on the shoulder strip 2 are buckled into the corresponding fixed tenon 20 on the matched fixed bottom plate, the pressing plate 24 is rotated upwards through the pressing plate shaft 26, the fixed mortise 23 and the fixed tenon 20 are buckled with each other, the film strip 2 is blocked by the pressing plate 24 and locked in the film strip, due to the thick and thin-topped cone frustum structure at the bottom of the fixed tenon 20, the two combined parts can be linearly fastened, the fixed pressing plate can be kept static by the multi-circle tenon 27 structure, and the first locking is completed. The locking plate 29 is pulled outwards and rotated leftwards (rightwards), so that the locking plate positioning concave 30 is matched with the pressing plate positioning bean 32, the locking plate is forced to generate pressure on the pressing plate 24 due to the inward applied elastic force of the locking plate pressing spring 31, then the film strip 2 is finally fastened, and the second locking is completed. And finishing the molding after the low-temperature thermoplastic sheet is hardened.
The subsequent formal treatment is consistent according to the formed low-temperature thermoplastic plate and the fixing method.
Example 3 comparison of the use of the supporting fixture of the present invention with other means
The results of the comparison are shown in Table 1.
TABLE 1
Claims (5)
1. A tenon-and-mortise type positioning and fixing frame for head and neck in radiotherapy is characterized by comprising a fixing frame, a headrest (291) and a head membrane,
the fixing frame is composed of a bottom plate slope (300), a bottom plate positioning hole (299), a bottom plate composite positioning hole (301), a mortise-tenon type locking assembly (302), limiting foot holes (297), a headrest groove (298), a headrest plate (147), a single locking piece locking assembly (289) and a shoulder bottom plate (290), the rectangular headrest groove (298) is positioned in the center of the surface of the headrest plate (147) and keeps the same lower edge with the headrest groove, the two mortise-tenon type locking assemblies (302) are oppositely arranged on two long edges of the headrest groove (298), the lower end of the rectangular headrest groove is free and flush with the edge of the headrest plate (147), the upper end of the rectangular headrest groove is respectively connected with two edges of the single locking piece locking assembly (289), the three components form a C-shaped structure, the depression of the surface of the headrest groove (298) forms three limiting foot holes (297) of a cone-shaped structure, the rectangular headrest groove is positioned in the center of the headrest groove (298), the rectangular headrest groove (290) is arranged in a shape of the quadrangular shoulder bottom plate (290), the edge of the head bottom plate (147) is connected with the edge of the head bottom plate (147), the single locking assembly (299) respectively, the two short edges of the single locking assembly (289), the single locking assembly (289) are respectively arranged on the edge of the single locking plate (290), the surface of the single locking assembly, the two short edges, the locking assembly (290), and the free locking assembly (300) are respectively connected with the long edge of the shoulder bottom plate (290);
the headrest (291) consists of a headrest seat (135), limiting feet (146), occipital bent (292) and cervical bent (293), the main body structure of the headrest seat is the headrest seat (135) with an approximate cuboid structure and is divided into a front surface and a back surface, the front surface is a surface which is properly installed and faces a user at the back, the upper surface is a wave-shaped elastic structure and is provided with two bending radians, the occipital bent and the cervical bent are sequentially arranged from top to bottom, three conical limiting feet (146) protrude from the back surface of the headrest seat (135), are distributed in a structure in a shape like a Chinese character 'pin', and correspond to limiting foot holes (297) in a headrest groove (298);
wherein the head membrane consists of a shoulder membrane (1), shoulder strips (2), membrane mortises (3), strip positioning beans (4), strip handles (5), noodles (6), top strips (7), top membrane gaps (9), neck membrane gaps (12), neck membranes (18), facial membranes (34) and top membranes (35), the top membranes (35) are isosceles trapezoids, the two waist edges are dissociated to form the top membrane gaps (9), the top strips (7) are connected to the upper edges, the strip handles (5) are arranged in the middle of the cross-over edges, the membrane mortises (3) are respectively distributed near the two ends of the top strips (7), the membrane mortises (3) are of circular hole structures penetrating through the top strips (7), the strip positioning beans (4) are positioned on the surfaces in the middle of the top strips (7), the lower edge of the mask is connected with a mask (34), the mask (34) is quadrilateral, the left edge and the right edge of the utility model are respectively connected with a noodle (6), the three membrane rivets (3) are distributed at equal intervals and penetrate through the noodle (6), the surface between the two positioning beans (4) is equidistantly provided with the strip positioning beans (4), the lower edge of the facial mask (34) is connected with the neck mask (18), the neck mask (18) is in an isosceles trapezoid shape, the two waist edges are dissociated to form a neck mask gap (12), the lower edge of the shoulder film is connected with the shoulder film (1), the shoulder film (1) is quadrilateral, the left side and the right side of the plastic film are respectively connected with a shoulder strip (2), and two ends of the shoulder strip (2) are respectively distributed with a film mortise (3) of a round hole structure penetrating through the film strip.
2. The head and neck positioning and fixing frame for tenon-and-mortise type radiotherapy according to claim 1, wherein the tenon-and-mortise type locking assembly (302) comprises a fixing groove wall (19), a fixing tenon (20), a fixing mortise (23), a pressing plate (24), a fixing bottom plate (25), a pressing plate positioning bean (32), a pressing plate positioning groove (33), a tenon-and-mortise type pressing plate structure (102) and a locking plate structure (104), wherein the two tenon-and-mortise type pressing plate structures (102) are connected with the fixing groove wall (19) into a whole through the fixing bottom plate (25); the fixed groove wall (19) is provided with three fixed tenons (20) which are distributed at equal intervals, the fixed groove wall corresponds to three fixed mortise work (23) on the pressure plate (24), two pressure plate positioning recesses (33) are arranged among the three fixed mortise work (23) on the front side of the pressure plate (24), two pressure plate positioning beans (32) are arranged among the three fixed mortise work (23) on the back side of the pressure plate (24), and the middle part of the crossed edge of the fixed groove wall (19) and the fixed bottom plate (25) is provided with two opposite locking plate structures (104); the mortise type pressure plate structure (102) comprises a fixed groove wall (19), a fixed tenon (20), a pressure plate base (21), a pressure plate blank (22), a fixed mortise (23), a pressure plate (24), a fixed bottom plate (25), a pressure plate shaft (26) and tenon veins (27), wherein the fixed groove wall (19) is a wedge-shaped body which is thin at the top and thick at the bottom and is vertical to one edge of the fixed bottom plate (25), the pressure plate base (21) is designed in the middle of the bottom end of the fixed groove wall (19), the pressure plate shaft (26) is moved in the middle, one end of the pressure plate (24) is free, the pressure plate blank (22) is designed in the middle of the other end and is connected with the pressure plate shaft (26) and the pressure plate base (21) into a whole, the fixed mortise (23) is designed on the pressure plate (24), the fixed tenon (20) on the fixed groove wall (19) corresponds to the pressure plate (24), and a plurality of tenon veins (27) are arranged on the pressure plate blank; wherein locking plate structure (104) comprises locking plate axle (28), locking plate (29), locking plate location concave (30) and locking plate pressure spring (31), and locking plate axle (28) and fixed cell wall (19) that locking plate (29) pass through the bottom link to each other, and wherein locking plate axle (28) outside end design has locking plate pressure spring (31), and locking plate (29) head end back design has locking plate location concave (30).
3. The head and neck positioning and fixing frame for tenon-and-mortise type radiotherapy according to claim 1, wherein the single locking piece locking assembly (289) comprises a fixing groove wall (19), fixing tenons (20), fixing mortises (23), a pressing plate (24), a fixing bottom plate (25), a pressing plate positioning groove (33), a tenon-and-mortise type pressing plate structure (102) and a locking plate structure (104), the two tenon-and-mortise type pressing plate structures (102) are connected with the fixing groove wall (19) through the fixing bottom plate (25) into a whole, the fixing groove wall (19) is provided with two fixing tenons (20) distributed at equal intervals, the two fixing mortises (23) on the pressing plate (24) correspond to the fixing groove wall, the pressing plate positioning groove (33) is arranged between the two fixing mortise locking plates (23) on the front side of the pressing plate (24), the pressing plate positioning bean (32) is arranged between the two fixing mortises (23) on the back side of the pressing plate (24), the middle part (104) of the intersecting edge of the fixing groove wall (19) and the fixing bottom plate (25) is provided with a wedge-shaped pressing plate structure (102), the fixing groove wall (19), the pressing plate (20), the pressing plate (24), the pressing plate (27) is provided with a hollow pressing plate (25), and a wedge-shaped pressing plate structure (26), and a wedge-shaped pressing plate structure is arranged on the fixing groove wall (25) A pressing plate base (21) is designed in the middle of the bottom end of the fixed groove wall (19), a pressing plate shaft (26) runs in the middle, one end of a pressing plate (24) is free, a pressing plate clearance (22) is designed in the middle of the other end of the pressing plate shaft, the pressing plate shaft (26) is connected with the pressing plate base (21) into a whole, a fixed mortise (23) is designed on the pressing plate (24), a fixed tenon (20) on the fixed groove wall (19) corresponds to the fixed mortise, and a plurality of circles of tenon grains (27) are arranged on the fixed groove wall (19); wherein locking plate structure (104) comprises locking plate axle (28), locking plate (29), locking plate location concave (30) and locking plate pressure spring (31), and locking plate axle (28) through the bottom of locking plate (29) link to each other with fixed cell wall (19), and wherein locking plate axle (28) outside end design has locking plate pressure spring (31), and locking plate (29) head end back design has locking plate location concave (30).
4. The head and neck positioning and fixing frame for tenon-and-mortise type radiotherapy according to claim 1, wherein a head base plate (147) with an isosceles trapezoid structure and a shoulder base plate (290) with a rectangular structure form a main structure of the fixing frame.
5. The tenon-and-mortise type positioning and fixing frame for head and neck radiotherapy according to claim 1, wherein the head membrane main body structure is formed by sequentially connecting four sheet membranes, namely a top membrane (35), a face membrane (34), a neck membrane (18) and a shoulder membrane (1), end to end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610858904.7A CN106362307B (en) | 2016-09-28 | 2016-09-28 | Tenon-and-mortise type positioning and fixing frame for head and neck in radiotherapy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610858904.7A CN106362307B (en) | 2016-09-28 | 2016-09-28 | Tenon-and-mortise type positioning and fixing frame for head and neck in radiotherapy |
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| Publication Number | Publication Date |
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| CN106362307A CN106362307A (en) | 2017-02-01 |
| CN106362307B true CN106362307B (en) | 2023-03-28 |
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| CN201610858904.7A Active CN106362307B (en) | 2016-09-28 | 2016-09-28 | Tenon-and-mortise type positioning and fixing frame for head and neck in radiotherapy |
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