CN2321403Y - Stereotaxis apparatus - Google Patents
Stereotaxis apparatus Download PDFInfo
- Publication number
- CN2321403Y CN2321403Y CN97223459U CN97223459U CN2321403Y CN 2321403 Y CN2321403 Y CN 2321403Y CN 97223459 U CN97223459 U CN 97223459U CN 97223459 U CN97223459 U CN 97223459U CN 2321403 Y CN2321403 Y CN 2321403Y
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- Prior art keywords
- witness marker
- marker bar
- bar
- bed body
- parallel
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Abstract
The utility model provides a stereotaxis apparatus used for treating a body in a radiomimetic mode, comprising a bed body 1 whose top part is provided with an opening, a negative pressure positioning bag 2 and a positioning mark rod. The positioning mark rod comprises two groups of straight rods. A first group is parallel to the long direction of the bed body 1, wherein, distances of a plurality of pairs of parallel rods are unequal, and the parallel rods are orderly arranged along the long direction of the bed body 1. The straight rods belonging to a second group are mutually parallel, the straight rods are positioned on the same plane with a plurality of pairs of parallel rods whose distances are unequal, the straight rods and the parallel rods form a definite angle, a plurality of N shapes which are orderly arranged along the long direction of the bed body 1 are formed, shapes of the N shapes are similar, and sizes of the N shapes are unequal. The utility model can accurately position a focus of infection positioned at any region of a human body.
Description
This utility model relates to the three-dimensional positioning equipment of operation or diagnosis usefulness, especially body is carried out the employed 3 D positioning equipment of radiotherapy.
For body is carried out stereotactic radiotherapy, need carry out accurate localization to patient's body.Present stage, existing scheme was to adopt a kind of three-dimensional positioning framework, as the disclosed 3 D positioning equipment of patent documentation W094/28817: comprise the casing of a U type, by absorbing very little to lonizing radiation and on-deformable material is made; A negative pressure location bag is formed by lonizing radiation are absorbed very little material; Box inside is equipped with the witness marker bar, selection can be showed the material of corresponding index point and be made on the faultage image of diagnostic devices such as CT, MRI, the witness marker bar comprises two groups of straight-bars, first group leader is short to differ, and it is parallel with the length direction of casing, second group is parallel to each other, and with first group have a certain degree, form several same N shape; Z is housed to coordinatometer on the length direction in the casing outside, an arc chi is equipped with on casing top, and this arc chi is vertical with the length direction of casing, and can move to coordinatometer with respect to Z, be carved with above X to coordinatometer and Y to coordinatometer.In use, allow patient lie on the casing, utilize negative pressure location bag that patient is fixed with respect to casing, and together go to carry out CT or the scanning of MRI faultage image; On picture, obtain the image of tissue and 2 group mark points, elder generation's number goes out the number of the first group mark point, obtain a parameter, measure the distance of the second group mark point and the first group mark point again, obtain another parameter, determine three-dimensional coordinate (x, the y of focus in the casing coordinate system by treatment planning systems with computer then, z) and provide therapeutic scheme, make the target spot of irradiation; Casing is placed on the therapeutic bed, adjusts the position of therapeutic bed to, Z to coordinatometer to, Y, target spot is overlapped with the focus of ray, carry out stereotactic radiotherapy then with reference to X.Because in this scheme, first group identical with the formed N shape of the second group mark bar, in the diagnosis image, to focus coordinate (x, y, determining z) also needs this parameter of number of the first group mark point, and computational methods are loaded down with trivial details, complicated operation, thereby increased source of error, influenced positioning accuracy.
The purpose of this utility model provides a kind of simple in structure, the 3 D positioning equipment that positioning accuracy is high.
To achieve these goals, this utility model has adopted following technical scheme: a kind of 3 D positioning equipment, comprise an open-topped bed body, and make by and on-deformable material very little the lonizing radiation absorption; A negative pressure location bag is formed by lonizing radiation are absorbed very little material; The witness marker bar also is housed, selection can be showed the material of corresponding index point and be made on the faultage image of diagnostic devices such as CT, MRI, the witness marker bar comprises two groups of straight-bars, first group of length direction with the bed body is parallel, wherein, have and some the parallel bar spacing is not waited, and be arranged in order along the length direction of bed body; Second group parallel to each other, with severally and having a certain degree to parallel bar at grade that above-mentioned spacing does not wait, forms several similar along the shape that the length direction of bed body is arranged in order, as to differ in size N shapes.
The utility model has the advantages that, owing to first group with similar the differing in size of the second group mark bar formed N shape shape, in the diagnosis image, only need measure the second group mark point and the first group mark point apart from this parameter, just can determine the three-dimensional coordinate (x of focus in the positioner coordinate system with computer by treatment planning systems, y, z), computational methods are simple, and are easy and simple to handle, reduce source of error, improved positioning accuracy.
Below in conjunction with drawings and Examples this utility model is described in further detail.
Fig. 1 is the side schematic view of an embodiment of this utility model 3 D positioning equipment;
Fig. 2 is bowing to sketch map of 3 D positioning equipment shown in Figure 1;
Fig. 3 is the transverse sectional view that repeated positioning device is not installed of 3 D positioning equipment shown in Figure 1;
Fig. 4 is the transverse sectional view that witness marker bar bow-shaped support is not installed of 3 D positioning equipment shown in Figure 1.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 as can be known, in the embodiment of this utility model 3 D positioning equipment, bed body 1 is that a four sides has sidewall, open-topped framework, its width and height can guarantee to allow patient be completely fixed in a body inside, again can assurance and the scope of passing through of diagnostic devices such as CT, MRI be complementary, should be by scope with circle D
1Expression; Its length can be held whole human body, so that fixing patient.Bed body 1 is made by composite, and skin be carbon fiber, and internal layer is a foamed materials, is added with carbon fiber gusset 20 in the middle of the foamed materials, makes that 1 pair of lonizing radiation absorption of a body is very little, and enough intensity is arranged, and comparatively light.
Negative pressure location bag 2 is to adopt commercial product, and bag and internal particle shape implant thereof are macromolecular material, and be very little to the absorption of lonizing radiation.
In order to prevent that negative pressure location bag 2 from sliding with respect to bed body 1, plurality of strengthening ribs 21 is equipped with in the inboard of the bottom of bed body 1, and reinforcement 21 adopts the composite identical with a body 1 to make.21 pairs of bed bodies of reinforcement 1 also have the effect of reinforcing.
On the base plate of bed body 1 two groups of witness marker bars are housed.First group of length direction with bed body 1 is parallel, and wherein, witness marker bar 3 is positioned at a side of base plate, and its length is equivalent to the length of half human body, is approximately 1 meter; Witness marker bar 4,5,6,7 is positioned at the opposite side of base plate, does not wait with the distance of witness marker bar 3, and is arranged in order along the length direction of bed body 1.Second group of witness marker bar 8,9,10,11 is parallel to each other, have a certain degree with witness marker bar 4,5,6,7, one end and witness marker bar 3 join, the other end joins with the end of witness marker bar 4,5,6,7 respectively, it is similar to form 4 shapes of being arranged in order of length direction along bed bodies 1, the N shape of differing in size.These witness marker bars are embedded in the interior foamed materials of a body 1 wall, and are positioned at an end of a body 1.If focus is positioned at the first half of human body, human body head is positioned towards the end that the witness marker bar is arranged; If focus is positioned at the Lower Half of human body, human body head is positioned towards an end that does not have the witness marker bar, like this, just can realize location to the focus that is positioned at any position of human body.The certain locating hole of some spacings 14,14 ＇ are arranged at the top of bed body 1 both sides, and the centrage of locating hole 14,14 ＇ is vertical with horizontal plane; Locating hole 14 ＇ of locating hole 14 and opposite side form a vertical plane of length direction with a body 1 in pairs.A pair of witness marker bar 12,12 ＇ are housed above bed body 1, and its length satisfies the requirement of general fault imaging, can get 250mm.Witness marker bar 12,12 ＇ are contained on two bow-shaped supports, 13,13 ＇, and the stent foot of bow-shaped support 13,13 ＇ is conical pin, and are adaptive with locating hole 14,14 ＇ on the bed body 1, can be fixed on the body 1 also can dismantle.In use, select the locating hole of correct position according to examining definite lesions position in advance, by bow-shaped support 13,13 ＇ witness marker bar 12,12 ＇ are installed on the body 1, its installation site is parallel with first group of witness marker bar 3,4,5,6,7.For the diagnostic devices such as CT, MRI with various models are complementary, when the witness marker bar is installed, guarantee that on the plane of fault imaging all within the sweep limits of diagnostic device, this sweep limits usefulness is justified D for all witness marker point P3, P4, P8, P12, P12 ＇
2Expression.Because witness marker bar or be installed on the base plate of a body 1, or be installed on bow-shaped support 13,13 ＇ of a body 1 top, compared with prior art, bed body 1 can be done to such an extent that broad is shorter, like this, more fat patient also can be fixed in the body 1, has enlarged the scope of application of this positioner.For using the CT imaging, the witness marker bar can be selected engineering plastics for use, makes solid straight-bar as ABS, fiberglass etc., and like this, on the CT image, index point is a bright spot; Or make the straight tube of hollow, like this, on the CT image, index point is a bright ring.For using the MRI imaging, the witness marker bar fills CuSO in being
4The lucite tube of video picture liquid such as solution, like this, on the MRI image, index point is a bright spot.
The vertical sidewall top of bed body 1 indicates and the vertical school of length direction bit line 22, and marks the mid point C of this school bit line 22.When carrying out fault imaging, can utilize the position, cross lubber-line school of school bit line 22 and mid point C and diagnostic device.
Repeated positioning device also is housed above bed body 1.Repeated positioning device comprises three assemblies, and each assembly is made up of bow-shaped support 16, horizontal slide mechanism 17 and longitudinal sliding motion mechanism 18, depth measurement probe 19.The stent foot of bow-shaped support 16 is conical pin, and is adaptive with locating hole 14,14 ＇ of bed body 1, thereby can be fixed on the diverse location of a body 1; Firm in order to guarantee, fixedly the time, also be added with a planar support 15.Depth measurement probe 19 is marked with scale, is installed in the longitudinal sliding motion mechanism 18 by aperture in the longitudinal sliding motion mechanism 18 and holding screw, can move up and down and fix.Longitudinal sliding motion mechanism 18 is connected and fixed on horizontal slide mechanism 17 by the movable type guiding, and laterally slide mechanism 17 is connected and fixed on bow-shaped support 16 by the movable type guiding.
In use, negative pressure location bag 2 is put into a body 1, in order to limit membranous motion, patients abdomen is tightened up with bellyband, allow then patient lie into, utilize negative pressure location bag 2 to make patient fixing, together go to carry out perpendicular to the CT of the length direction of bed body 1 or the faultage image scanning of MRI with respect to bed body 1; On faultage image, obtain five index point P3, P4, P8, P12, the P12 ' of witness marker bar 3,4,8,12,12 ＇ correspondences.Because P3, P4, P12, P12 ＇ X, the Y coordinate in the positioner coordinate system are known, witness marker bar 3 and 8 angulations are known, as long as measure the distance between P3 and the P8, just can determine the three-dimensional coordinate (x of focus O in the positioner coordinate system with computer by treatment planning systems, y, z), and provide therapeutic scheme, make the target spot of irradiation.Compared with prior art, these computational methods are direct, simple, and source of error is few, thereby the positioning accuracy height, and the site error of determined focus O is 1mm.
Positioner is fixed on the therapeutic bed by location and retaining mechanism, makes positioner and therapeutic bed that certain relative position relation be arranged; Convert the position coordinates of target spot in the positioner coordinate system in the therapeutic bed coordinate system position coordinates; Adjust the position of therapeutic bed, target spot is overlapped with the focus of ray, carry out stereotactic radiotherapy then.Also can adopt the scheme of prior art, load onto in the outside of the bed body 1 of positioner Z to coordinatometer, X to coordinatometer and Y to coordinatometer; Positioner is placed on the therapeutic bed, adjusts the position of therapeutic bed to, Z to coordinatometer to, Y, target spot is overlapped with the focus of ray, carry out stereotactic radiotherapy then with reference to X.
When needing interval procedure,, also utilize three depth measurement probes 19 to make three gauge points,, on umbilicus, get a bit as on breastbone, getting 2 points at patient's body surface except with bag 2 location, negative pressure location; During each treatment, calibrate according to these three gauge points, thereby realize resetting to patient body, the precision of resetting is 3mm.
Claims (7)
1. a 3 D positioning equipment comprises an open-topped bed body (1), is made by and on-deformable material very little to the lonizing radiation absorption; A negative pressure location bag (2) is formed by lonizing radiation are absorbed very little material; The witness marker bar also is housed, and selection can be showed the material of corresponding index point and made on the faultage image of diagnostic devices such as CT, MRI,
It is characterized in that: the witness marker bar comprises two groups of straight-bars, first group of witness marker bar (3,4,5,6,7,12,12 ＇) is parallel with the length direction of bed body (1), wherein, have and some the parallel bar spacing is not waited, and be arranged in order along the length direction of bed body (1); Second group of witness marker bar (8,9,10,11) is parallel to each other, with above-mentioned spacing do not wait several to parallel bar at grade, and have a certain degree, form several similar along the shape that the length direction of bed body (1) is arranged in order, as to differ in size N shapes.
2. 3 D positioning equipment according to claim 1 is characterized in that: described bed body (1) is made by composite, and skin is a carbon fiber, and internal layer is a foamed materials, is added with carbon fiber gusset (20) in the middle of the foamed materials.
3. 3 D positioning equipment according to claim 1 and 2 is characterized in that: the witness marker bar (3,4,5,6,7,8,9,10,11) of described composition N shape is installed in the bottom of a body (1).
4. 3 D positioning equipment according to claim 1 and 2, it is characterized in that: in described first group of witness marker bar (3,4,5,6,7,12,12 ＇), except the witness marker bar (3,4,5,6,7) of forming N shape, have at least a witness marker bar (12) to be installed in the top of a body (1), witness marker bar (12) is fixed on the body (1) by bow-shaped support (13,13 ＇).
5. 3 D positioning equipment according to claim 3, it is characterized in that: in described first group of witness marker bar (3,4,5,6,7,12,12 ＇), except the witness marker bar (3,4,5,6,7) of forming N shape, have at least a witness marker bar (12) to be installed in the top of a body (1), witness marker bar (12) is fixed on the body (1) by bow-shaped support (13,13 ＇).
6. 3 D positioning equipment according to claim 1 and 2 is characterized in that: described witness marker bar (3,4,5,6,7,8,9,10,11,12,12 ＇) is made by engineering plastics.
7. 3 D positioning equipment according to claim 6 is characterized in that: described witness marker bar (3,4,5,6,7,8,9,10,11,12,12 ＇) is the straight tube of the hollow made by engineering plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97223459U CN2321403Y (en) | 1997-06-07 | 1997-06-07 | Stereotaxis apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97223459U CN2321403Y (en) | 1997-06-07 | 1997-06-07 | Stereotaxis apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2321403Y true CN2321403Y (en) | 1999-06-02 |
Family
ID=33938158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97223459U Expired - Fee Related CN2321403Y (en) | 1997-06-07 | 1997-06-07 | Stereotaxis apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2321403Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101491461B (en) * | 2008-01-24 | 2010-12-15 | 李明众 | Mobile positioning rack |
| CN102451037A (en) * | 2010-10-14 | 2012-05-16 | 中国辐射防护研究院 | Human body target positioning device and method |
| CN101491460B (en) * | 2008-01-24 | 2012-05-30 | 李明众 | Close-range treatment three-dimensional rack |
| CN105078501A (en) * | 2015-08-17 | 2015-11-25 | 上海联影医疗科技有限公司 | Positioning bed, positioning system and positioning method |
-
1997
- 1997-06-07 CN CN97223459U patent/CN2321403Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101491461B (en) * | 2008-01-24 | 2010-12-15 | 李明众 | Mobile positioning rack |
| CN101491460B (en) * | 2008-01-24 | 2012-05-30 | 李明众 | Close-range treatment three-dimensional rack |
| CN102451037A (en) * | 2010-10-14 | 2012-05-16 | 中国辐射防护研究院 | Human body target positioning device and method |
| CN105078501A (en) * | 2015-08-17 | 2015-11-25 | 上海联影医疗科技有限公司 | Positioning bed, positioning system and positioning method |
| CN105078501B (en) * | 2015-08-17 | 2018-06-19 | 上海联影医疗科技有限公司 | Location bed, alignment system and localization method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |