CN204563347U - Pelvic irradiation positioner - Google Patents
Pelvic irradiation positioner Download PDFInfo
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- CN204563347U CN204563347U CN201520264117.0U CN201520264117U CN204563347U CN 204563347 U CN204563347 U CN 204563347U CN 201520264117 U CN201520264117 U CN 201520264117U CN 204563347 U CN204563347 U CN 204563347U
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- arc
- shaped rail
- vacuum pad
- slide block
- ruler
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Abstract
A kind of pelvic irradiation positioner, comprises vacuum pad, and above the longitudinal interlude of vacuum pad, erection has arc-shaped rail, and the two ends, left and right of arc-shaped rail are respectively near the left and right sides of vacuum pad, and two ends, described arc-shaped rail left and right are respectively equipped with feet; Arc-shaped rail circumferentially can be provided with slide block slidably, arc-shaped rail is formed with radian scale; Slide block is connected with socket, offers jack in socket, is equipped with ruler slidably in jack, and ruler is formed with length scale.This utility model accurately can be located in all directions in conjunction with the anterior superior iliac spine of human body, realize the pendulum position accurate recovery of patient on therapy apparatus to the pendulum position when CT scan, avoid occurring Set-up errors on the direction swung around human body central axis, therefore more accurately tumor cell can be irradiated to, avoid accidentally injuring normal structure, reach the effect of accurate radiotherapy.
Description
Technical field
This utility model belongs to the technical field of radiotherapy equipment, is specifically related to a kind of pelvic irradiation positioner.
Background technology
Radiotherapy is one of primary treatments of tumor, and ray must be made during radiotherapy to be accurately irradiated to tumor tissues, should avoid the normal structure be irradiated to around tumor as far as possible simultaneously, so can Patients During Radiotherapy accurately locate is very crucial problem.
Vacuum pad (also known as " vacuum locating pad ") is often used in existing radiotherapy localization process.Containing a large amount of fine particle implants in vacuum pad, when non-evacuation, granule filler can move freely inside vacuum pad, when patient lies in after above vacuum pad, be there is depression and form corresponding die shape by vacuum pad in the build profile along with this patient, matching patient size profile, now by vacuum pad evacuation, the fine particle implant of vacuum pad inside will closely press together, larger stiction is produced between granule filler surface, limit the movement of granule filler inside vacuum pad, whole vacuum pad is made to form firm stiff die shape thus, this die shape and patient size's outline.
Radiotherapy localization process is as follows: the patient on vacuum pad is sent into CT machine and scans, after determining tumor locus, reading the coordinate values of tumor locus, patient leaves vacuum pad, then the vacuum pad of having shaped is transferred to the relevant position on therapy apparatus, allow patient lie in above this vacuum pad again, the coordinate values of the tumor locus that can obtain according to CT scan carries out accurate radiotherapy.After each radiotherapy, patient leaves vacuum pad; In each the radiotherapy operation of the same course for the treatment of, this patient lies on this vacuum pad repeatedly.
The effect of above-mentioned vacuum pad, mainly in order to the pendulum position after making patient lie down on therapy apparatus is each time identical with the pendulum position on CT machine, therapy apparatus reappears the pendulum position on CT machine, so that radiotherapy machine directly utilizes CT scan, tumor locus coordinate figure out implements accurate radiotherapy.But applicant finds in practice, when implementing the radiotherapy of pelvic cavity position, vacuum pad axially (direction at Liang Zu center is pointed to) to human body by head center even locating effect accurate, but on the other hand, because human body easily rotates around central axis, cause Set-up errors.This is because, as shown in Figure 1, after human body lies in the cavity of vacuum pad 1, human body skull portion abuts against the anterior B point of vacuum pad 1, human foot abuts against the rear portion A point of vacuum pad, same shoulders of human body also abuts against vacuum pad, and wherein the A point, B point etc. of above-mentioned vacuum pad play accurately position-limiting action to human body axial (longitudinal direction), therefore becomes human body axially obvious limit component; And on the other hand, because human buttock, waist are more round and mellow, the cross-sectional profiles at position, human body pelvic cavity place is similar to curved, and the die cross section that vacuum pad 1 simulates out is also curved, and vacuum pad 1 lacks obvious limit component on this cross section, as shown in Figure 2, easily occur after meaning patient lies down to occur beat around health longitudinal axis, as shown in Figure 3, under this situation, without any significantly instruction or spacing, lack restrictive condition, be difficult to perceive set-up deviation.Because existing vacuum pad lacking accurate positioning function to rotating around central axis during patient's prone position, making positioning result occur relatively large deviation, affect therapeutic effect and easily accidentally injure normal structure.
In addition, as shown in Figure 2, in pelvic cavity 9, the expanded state (corresponding to urine storage amount) of bladder 7 has larger fluctuation in different time points, and the fluctuation of bladder 7 expanded state can cause again the change in location of tumor tissues in pelvic cavity 9; When CT scan and under radiotherapy two states, the position of tumor tissues can be different due to the difference of the expanded state of bladder, and existing positioner fails to take into full account and in conjunction with this changing factor, this can make again radiotherapy localization result occur relatively large deviation.
Utility model content
The purpose of this utility model is overcome above-mentioned shortcoming and provide and a kind of pelvic irradiation positioner, and it can make the position accurate recovery of patient on therapy apparatus to the position when CT scan.
Its object can realize by following scheme: a kind of pelvic irradiation positioner, comprise vacuum pad, it is characterized in that, above the longitudinal interlude of vacuum pad, erection has arc-shaped rail, the two ends, left and right of arc-shaped rail are respectively near the left and right sides of vacuum pad, and two ends, described arc-shaped rail left and right are respectively equipped with feet; Arc-shaped rail circumferentially can be provided with slide block slidably, arc-shaped rail is formed with radian scale; Slide block is connected with socket, offers jack in socket, is equipped with ruler slidably in jack, and ruler is formed with length scale.
Be preferably, slide block is formed with the guide hole of circular arc, and the radius of arc-shaped rail equals the radius of circular arc guide hole, and this slide block set is outside arc-shaped rail.
Be more preferably, the length of ruler is to the radial direction for arc-shaped rail.
The lateral attitude measuring means measuring horizontal relative position is respectively equipped with between the feet at two ends, arc-shaped rail left and right and vacuum pad.
Described lateral attitude measuring means refers to that the feet of arc-shaped rail is formed with horizontal lateral aperture, horizontal quarter butt is equipped with in lateral aperture, horizontal quarter butt is also provided with scale, and feet is also provided with compressing bolt, the side of the horizontal quarter butt of end contact of compressing bolt.
This utility model has the following advantages and effect:
One, this utility model accurately can be located in conjunction with the anterior superior iliac spine of human body, about making patient, the coordinate position of two place's anterior superior iliac spine on therapy apparatus accurately equals the coordinate position on CT machine, realize the position accurate recovery of patient on therapy apparatus thus to the position when CT scan, the degree that deflects during the degree accurate recovery CT scan that patient is deflected along body axes on therapy apparatus, guarantee the repeatability of putting position, avoid on the direction swung around human body central axis, occurring Set-up errors during radiotherapy, therefore radial energy more accurately irradiates and kills tumor cell, avoid accidentally injuring normal structure simultaneously, reach the effect of accurate radiotherapy.
Two, ruler can be utilized to measure the filling degree of bladder on CT machine, on therapy apparatus respectively, and then the filling of bladder degree that can control under two states is substantially identical, makes the position of tumor tissues further precise restoration on therapy apparatus from another point of view.
Accompanying drawing explanation
Fig. 1 is the principle schematic of vacuum pad to human body axial location.
Fig. 2 is C-C cross-sectional view in Fig. 1.
Fig. 3 is that existing vacuum pad occurs the view of error to the horizontal beat degree location of human body.
Fig. 4 is transversary and the using state schematic diagram of a kind of specific embodiment of this utility model.
Fig. 5 is the view longitudinally gone up embodiment illustrated in fig. 4.
Fig. 6 is the horizontal cross-sectional schematic of the positioner of pelvic irradiation shown in Fig. 5.
Fig. 7 is the perspective view of ruler and slide block in Fig. 6.
Fig. 8 be in Fig. 7 slide block together with the perspective view of socket.
Fig. 9 is D-D cross-sectional view in Fig. 6.
Figure 10 is filling of bladder degree measurement method schematic diagram.
Detailed description of the invention
Shown in Fig. 4, Fig. 5, Fig. 6, this pelvic irradiation positioner comprises vacuum pad 1, above the longitudinal interlude of vacuum pad 1, erection has arc-shaped rail 2, and the two ends, left and right of arc-shaped rail 2 are respectively near the left and right sides of vacuum pad 1, and described arc-shaped rail about 2 two ends are respectively equipped with feet 21; Arc-shaped rail 2 circumferentially can be provided with slidably the slide block 3 of two circular arcs.Shown in Fig. 7, Fig. 8, Fig. 9, the slide block 3 of each circular arc is formed with the guide hole 31 of circular arc, and the radius of arc-shaped rail 2 equals the radius of circular arc guide hole 31, and the slide block 3 of circular arc is enclosed within outside arc-shaped rail 2; Arc-shaped rail 2 is formed with radian scale; The slide block 3 of circular arc is connected with socket 32, offers jack 33 in socket 32, is equipped with ruler 4 slidably in jack 33, and ruler 4 is formed with length scale, and the length of ruler 4 is to the radial direction for arc-shaped rail 2.
Shown in Fig. 4, Fig. 5, Fig. 6, the lateral attitude measuring means measuring horizontal relative position is respectively equipped with between the left and right feet 21 of arc-shaped rail 2 and vacuum pad 1, described lateral attitude measuring means refers to: the feet 21 of arc-shaped rail is formed with horizontal lateral aperture, horizontal quarter butt 5 is equipped with in lateral aperture, horizontal quarter butt 5 is also provided with scale, feet 21 is also provided with compressing bolt 51, the side of the horizontal quarter butt 5 of end contact of compressing bolt 51.
Above-described embodiment accurately can be located in all directions in conjunction with the anterior superior iliac spine of human body pelvic cavity skeleton, and shown in Fig. 2, anterior superior iliac spine refers to the end points of crista iliaca 6, near body surface, be easy to accurately find and show, human body pelvic cavity skeleton has left and right two place's anterior superior iliac spine, as shown in M point, N point in Fig. 2.
Above-described embodiment specifically uses operating process as follows:
When patient prepares CT scan, vacuum pad 1 is placed in the table 8 of CT machine, patient is allowed to lie in above vacuum pad 1, vacuum pad 1 is caved according to patient contours, evacuation make vacuum pad stiff after, arc-shaped rail 2 is placed on vacuum pad 1, the circumference of slide block 3 along arc-shaped rail 2 is slided, the lower end of ruler 4 is made to point to patient left and right anterior superior iliac spine respectively, and make the anterior superior iliac spine of lower extreme point against patient of ruler 4, as shown in Figure 4, read radian reading residing for slide block 3, represent the ruler reading of the spacing of slide block and anterior superior iliac spine, left and right two place's anterior superior iliac spine form one group of data respectively, read-record is preserved, in addition, in above process, left and right two horizontal quarter butts 5 are made to head on vacuum pad 1 left and right sides respectively, the reading of record left and right two horizontal quarter butts 5, the contacting points position contacting left and right two horizontal quarter butts 5 at vacuum pad 1 is marked, then removed by arc-shaped rail 2, patient carries out CT scan.
After this, when patient prepares to implement radiotherapy by therapy apparatus, above-mentioned vacuum pad 1 is placed on the relevant position of therapy apparatus table 8, patient is allowed again to lie in above this vacuum pad 1, arc-shaped rail 2 is placed on again on vacuum pad 1, regulate horizontal relative position, the longitudinal relative position between arc-shaped rail 2 and vacuum pad 1, make left and right two horizontal quarter butts 5 head on vacuum pad 1 left and right sides respectively and form marked contacting points position, and make the reading of two horizontal quarter butts 5 return to reading on CT machine, tighten compressing bolt 51, again then, adjustment patient body position, the location parameter of left and right anterior superior iliac spine on therapy apparatus (the radian reading in orientation residing for the slide block of left and right two is read in this process, the reading of left and right two rulers), also as shown in Figure 4, until the slide block radian reading on therapy apparatus, ruler reading and the slide block radian reading in the past on CT machine, ruler reading is identical to be as the criterion, the coordinate position that about such patient, the coordinate position of two place's anterior superior iliac spine on therapy apparatus will accurately equal on CT machine, make the position accurate recovery of patient on therapy apparatus to the position when CT scan thus, after this compressing bolt 51 can be unscrewed, arc-shaped rail 2 is removed from therapy apparatus, patient can start radiotherapy.
In addition, in said process when patient lies on CT machine, slide block 3 can be slid into the middle position of arc-shaped rail 2, ruler 4 lower end is propped up pelvic cavity body surface, read ruler 4 reading, as shown in Figure 10; When patient lie in therapy apparatus prepares radiotherapy time, repeat aforesaid operations, read ruler 4 reading, judge the differential magnitude of filling of bladder degree according to the ruler reading under two states, if differential magnitude is comparatively large, after patient can be allowed to adjust filling of bladder degree, implement radiotherapy again.
Claims (5)
1. a pelvic irradiation positioner, comprise vacuum pad, it is characterized in that: above the longitudinal interlude of vacuum pad, erection has arc-shaped rail, and the two ends, left and right of arc-shaped rail are respectively near the left and right sides of vacuum pad, and two ends, described arc-shaped rail left and right are respectively equipped with feet; Arc-shaped rail circumferentially can be provided with slide block slidably, arc-shaped rail is formed with radian scale; Slide block is connected with socket, offers jack in socket, is equipped with ruler slidably in jack, and ruler is formed with length scale.
2. pelvic irradiation positioner according to claim 1, it is characterized in that: slide block is formed with the guide hole of circular arc, the radius of arc-shaped rail equals the radius of circular arc guide hole, this slide block set is outside arc-shaped rail.
3. pelvic irradiation positioner according to claim 1 and 2, is characterized in that: the length of ruler is to the radial direction for arc-shaped rail.
4. pelvic irradiation positioner according to claim 1 and 2, is characterized in that: be respectively equipped with the lateral attitude measuring means measuring horizontal relative position between the feet at two ends, arc-shaped rail left and right and vacuum pad.
5. pelvic irradiation positioner according to claim 4, it is characterized in that: described lateral attitude measuring means refers to that the feet of arc-shaped rail is formed with horizontal lateral aperture, horizontal quarter butt is equipped with in lateral aperture, horizontal quarter butt is also provided with scale, feet is also provided with compressing bolt, the side of the horizontal quarter butt of end contact of compressing bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520264117.0U CN204563347U (en) | 2015-04-28 | 2015-04-28 | Pelvic irradiation positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520264117.0U CN204563347U (en) | 2015-04-28 | 2015-04-28 | Pelvic irradiation positioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204563347U true CN204563347U (en) | 2015-08-19 |
Family
ID=53856044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520264117.0U Expired - Fee Related CN204563347U (en) | 2015-04-28 | 2015-04-28 | Pelvic irradiation positioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204563347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108211138A (en) * | 2018-02-05 | 2018-06-29 | 谭文勇 | Position puts position device |
-
2015
- 2015-04-28 CN CN201520264117.0U patent/CN204563347U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108211138A (en) * | 2018-02-05 | 2018-06-29 | 谭文勇 | Position puts position device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20160428 |