CN101428166A - Fixation method and device for breast in prostrate radiotheraphy of human body breast - Google Patents

Abstract

The invention provides a method and a device for breast fixation in prostration type radiotherapy for breast. The device comprises a double-layered breast fixation cup, the inner and the outer layers of which adhere to each other on the upper edge; and a space is formed between the two layers. As perforations are densely distributed on the inner cup and the outer cup is airtight, during the applying of negative pressure by the space between the two layers, mammary gland epidermis adheres to the wall of the inner wall to prevent the device from sliding upwards. In addition, by utilizing a device strapped on the torso of a patient to tightly strap the cup components on the torso of the patient, and meanwhile fixing the double-layered breast fixation cup on a bed supporting the patient in a locked manner, the geometric relationship among the cup, the breast wall, an image bed and a treatment couch can be fixed and restored accurately. Therefore, the invention provides a unique method of placing the systematic three-dimensional stereotactic orientation device and breast in a coordinate system which is in a circle fixing geometric relationship with the positioning cup.

Description

Breast fixing means and device in the human breast prostrate radiotheraphy

Technical field

The present invention relates to radiotherapy apparatus, refer in particular to breast fixing means and device in the human breast prostrate radiotheraphy in breast imaging or the therapeutic process.

Background technology

Breast carcinoma is the modal malignant disease of women." 2006 the global cancer fact and data " of ACS (ACS) issue show, the breast carcinoma case that the U.S. in 2006 diagnoses out is near 211,000.In the North America, the probability that the women suffers from breast cancer throughout one's life is 1/7.

It was gratifying, because the women is to the consciousness of self-protection and the routine physical examination of breast carcinoma, most of patient with breast cancers can be made a definite diagnosis at the initial stage of a disease, at present breast carcinoma of early stage patient's standard treatments is treated (BCT) for protecting breast, this therapy 6 to 8 weeks (mostly being the whole breast of radiation greatly) after radiotherapy are carried out lumpectomy to the patient, although the effect of BCT therapy is very desirable, Minimally Invasive Surgery reaches and has scheduled to last radiative process grievous injury very of a specified duration the quality of life of patient colony.

Through clinical trial for many years and research, there is compellent argument to show, the patient is to carry out aseptic sterilization for the tumor micro-wound face on the operating-table for the radiotherapeutic advantage of its utilization standard after excising mammary neoplasms, this main flow imagination has promoted the proposition of part mammary gland acceleration radiotherapy (APBI), need not whole breast is carried out radiotherapy, the radiotherapy ray can arrive near the mammary neoplasms excision cavity, after day, pharmaceutical quantities improved, this will bring potential influence to thousands of position cancer patients' life by being reduced in 7 to 8 weeks 4 to 5 days the whole radiotherapy time.

Having 5 kinds of third phase clinical trials at present is analyzed APBI and the whole radiotherapy of breast, the U.S. is implementing NSABP B39 test and RTOG 0413 test, 3000 patients are recruited in the clinical trial plan, and some mechanisms have counted the early-stage Study result: the relapse rate in 5 years is between 1% to 4%.

Yet in the breast radiotherapy process, the patient begins to worry own position when receiving treatment, most X-ray therapy require the patient to be back floating position, but make the patient the most responsive, check that the most concrete nuclear magnetic resonance (MRI) then requires the patient to be front lying position, inconvenience in view of back floating position, the plumpish women of suggestion breast is front lying position when radiotherapy, after the result shows that the plumpish women of breast accepts radiotherapy with front lying position, dosage uses more breast area to dwindle, the situation of area decline also appears organizing in pulmonary in the radiotherapy district and heart, 3 patients' four-dimensional CT database analysis result shows that the patient accepts 1 millimeter of the average mobile range less than of inner therapy posterior chest wall.

Radiotherapeutic another the big advantage of prone type breast is, it can reduce the body bobbing that produces because of heart contraction or respiratory movement, this shows, prone type breast X-ray therapy is simple, effective, and be expected to replace traditional supination type breast X-ray therapy, and dorsal position may cause the dosage inequality or the medicament of normal structure excessive.

If operating-table is carried out the part radiation, must be accurate especially during breast radiotherapy, computed tomography (CT), nuclear magnetic resonance (MRI) and position emissron tomography modernized imaging techniques such as (PET) can position tumor accurately, but, because mammary gland tissue is soft, this is in imaging, guarantee that how much precisions have proposed challenge when formulating treatment plan and the many covers of enforcement therapeutic scheme, past has been developed many breast tissue fixing devices, the most frequently used way is, when detecting, adopts the breast shadowgraph two parallel splint extruding breast tissues, other way purposes is different, as extrusion equipment, and thermoplastic face shield and profile packing ring etc.

U.S. Patent number 6,146,377 disclose a kind of equipment of udder shape, and be used for biopsy and other Minimally Invasive Surgerys with this, this equipment is couple structure, be convenient to when extracting mammary gland tissue fixedly breast, in addition, this equipment can also multiple mode at other positions execution medical operatings of nipple/areola and breast.

Reveal out a kind of outfit armarium base in U.S.'s periodical, be used for the open section of medical operating and the bi-layered device of vacuum/extraction, this equipment is that breast immobilization device is provided convenience, but above-mentioned existing way and equipment can not satisfy the key function feature of APBI therapy: first, fixture must be precisely, reliably, have repeatable and predictable, second, be applicable to prone type, the 3rd, comprise a kind of with fixing device and the equipment that becomes entablement or treatment table interlocking, the 4th, reproducible geometric figure when performing a surgical operation once more, the 5th, be equipped with three-dimensional vertically imaging register device, thereby guarantee to treat precision, the 6th, the breast that inhibition need not to treat contracts unnecessary radiotherapy scope to minimum.

Summary of the invention

The purpose of the technology of the present invention is in the process of breast imaging or radiotherapy for it provides radiotheraping method and device, to guarantee the geometrical relationship between breast, thoracic wall, one-tenth entablement and the treatment table.

Second purpose is to above-mentioned mammary gland tissue fixture provides operational approach and system, with accuracy, reliability, the repeatability and predictable of guaranteeing this fixture.

The 3rd purpose is for above-mentioned mammary gland tissue fixture provides operational approach and system, so that the patient keeps front lying position in imaging and therapeutic process.

The 4th purpose is for being to above-mentioned mammary gland tissue fixture provides operational approach and system, so that fixing device is interlocked with becoming entablement or treatment table.

The 5th purpose be to above-mentioned mammary gland tissue fixture provides operational approach and system, so as when to perform a surgical operation once more reproducible geometry location.

The 6th purpose is to above-mentioned mammary gland tissue fixture provides operational approach and system, so that the slice imaging position is associated with the physical location of fixture.

The 7th purpose is to above-mentioned mammary gland tissue fixture provides operational approach and system, so that the breast that inhibition need not to treat contracts unnecessary radiotherapy scope to minimum.

In view of above-mentioned purpose and other purposes, the invention provides breast fixing means and device in the human breast prostrate radiotheraphy in a kind of breast imaging or the therapeutic process.

The present invention is achieved through the following technical solutions:

The present invention mainly comprises fixedly cup of breast, breast is cup and the supporting use of vacuum source assembly fixedly, after the application of vacuum, fixedly the interior table shape of cup should be consistent with breast for breast, breast fixedly cup surface is the double-decker of mutual adhesion, internal layer is made up of intensive perforation grid, skin is firm closed structure, inside and outside there is the space between two-layer, with vacuum pipeline negative pressure is introduced inside and outside space between two-layer, mammary gland tissue is adsorbed on breast fixedly on the mesh walls of cup internal layer, thereby prevents that skin of breast and breast from fixedly producing slippage between the cup internal layer, and negative pressure also helps to extract mammary gland tissue (if knub position closes on thoracic wall in thoracic wall, radiotherapy beam is easier to down shine), when operation, preferably monitor the negative pressure between skin and the internal layer, and the level unanimity that keep-ups pressure.

The edge of breast fixed cover cup assembly is solid, its purposes comprises the following aspects, at first, it firmly fixes many purls, purl is as becoming entablement, Breast Coil, the locking device of treatment table and other positioning equipments, if locking puts in place, to keep geometry location relation accurately between breast fixed cover cup assembly and these armarium, secondly, for preventing that mammary gland tissue is out of shape because of health moves, to guarantee that whole body trunk is unaffected by the health fixing device, the health fixing device comprises that a firm framework partly reaches wrappage around whole trunk with bearing edge, and the marginal portion also can be used for holding vacuum pipeline, other functional structures such as image stitch line.

When the patient was prostrate, its mammary gland tissue was easy to separate from thoracic wall, and intrathoracic thoracic wall of more convenient thus processing and tissue under the effect of negative pressure, have a small amount of other mammary gland tissue to pull out in thoracic wall, and this makes the location be more prone to.

Purl (being used to be locked into entablement) also will pass the pin hole of health fixing device, and therefore, when cingulum was fastened, whole body trunk was just by fixedly cup and the constraint of health fixing device of breast, and outstanding purl then contract is gone into into entablement or near the slotted eye of treatment table inlet.

Breast hangs to table top, in case the patient is placed in on entablement or the treatment table, this purl or locked, breast fixedly cup pass through the inlet of table top, and purl can be by the dismounting device removal, becomes entablement and the treatment table must the corresponding locking device of outfit.

Should determine the cycle of treatment plan and implement treatment finish image scannings such as CT, NMR or PET for the patient after, under some medical conditions, if treatment time surpasses 1 day or continuous drawing does not reach ideal effect, this moment or need removal or reinstall fixing device, after reinstalling this equipment, must accurately recover the geometrical relationship before breast, cup, thoracic wall, one-tenth entablement or treatment table and the table top, place the purl device after, main problem be breast can as before be positioned in the cup.

For addressing this problem, we provide the position (with fixture relevant) of skin marker system with record skin, breast fixedly cup is preferably made by transparent material, the clear head-stamp of mark line palpus on its internal layer, each bar mark line is separate marking all, structure is different, the breast fixedly any point in the cup internal layer all has special coordinate, the patient puts on breast fixedly behind the cup for the first time, to be labeled by the breast skin body of radiotherapy, in the whole therapeutic process, the skin marker line is high-visible in transparent cup, the patient puts on breast fixedly behind the cup, and the skin marker line also can be marked on the position that is easy to observe or write down coordinate points, these coordinate records can be used for instructing after this maintenance accuracy is set.

For further cooperating the skin marker matcher, we have found a kind of alternative method, promptly include multiple vacuum band structure in, when being provided with repeatedly, the vacuum band can be used separately or be discharged by control valve, but this allows the breast partial fixing in a vacuum band, and in on-fixed vacuum band adjustment location, has finally guaranteed the accuracy of reorientating.

CT, modern imaging device such as MRI and PET adopts tomography, each tomography ordinal number is its Z coordinate, and each tomography is parallel to X-Y plane, the inner coordinate that uses of this image system and the labelling of mammary gland interior tissue do not have fixed dependency, the coordinate of intramammary same point after different scanning all may be different, because our the mammary gland navigation system and the relation of mammary gland interior tissue are certain, pinpoint top priority is that the image with mammary gland places by in the determined coordinate system of navigation system, this task be by embed breast fixedly the stereotactic system in the cup finish, current striped is around the fixing cup of whole breast, and its geometric equation is well-determined, these stereotaxis stripeds can adopt multiple mode, one of method of implementing is to place the fixedly root of cup of breast by circular striped, add one around breast fixedly cup top (being the nipple end) be to be " U " shape striped of 45 and to form with X-Y plane, the stereotaxis striped also can by with breast fixedly cup do not link to each other but three-dimensional positioning framework that geometrical relationship is determined is realized, on each face of this framework, the stereotaxis striped is arranged all, no matter how the stereotaxis striped is settled, these stripeds all are fiber or the tubule road that has the image reinforcing agent, they can show on each fault image, determined the position of fault of these stereotaxis stripeds, the i.e. coordinate of the coordinate system of determining by navigation system, the coordinate of the every bit on this fault image just can calculate, do not rely on image system inside to use, do not have the fixedly coordinate system of geometrical relationship with the mammary gland interior tissue, and the coordinate system that relies on navigation system itself to establish is to guarantee accurate localized key.

The technology of the present invention has the following advantages:

1, via enforcement of the present invention, mammary gland tissue fixed system and equipment precisely, reliable, have repeatablely and predictable, be convenient to imaging and the treatment of patient when prostrate.

2, via enforcement of the present invention, implement operation once more as need, can duplicate previous geometry location fully.

3, via enforcement of the present invention, can block the breast that need not to treat, unnecessary radiation irradiated area is reduced to minimum.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 implements first method of the present invention, promptly with double-deck negative pressure breast fixedly cup fix the structural representation of mammary gland position.

Fig. 2 is the cross section structure sketch map under Fig. 1 state.

Fig. 3 is the structural representation of the vertical view under Fig. 1 state.

Fig. 4 implements second method of the present invention, is about to double-deck negative pressure breast shown in Figure 1 and fixedly is divided into the structural representation of a plurality of negative pressuren zones in the folded space of cup.

Fig. 5 is the structural representation of the cutaway view of equipment among Fig. 4.

Fig. 6 is that this assembly is used to limit or flatten the breast that need not receive treatment for breast suppresses cup assembly sectional view.

Fig. 7 is the sketch map with the cover circle-harness of bra cup and patient's body binding.This only is one of feasible embodiment.For can also on the cover circle, adding and the general similar shoulder harness of medicated bra on this basis.

Fig. 8 illustrates why establish the coordinate of navigation system and the relative position of cross section and navigation system with the fault image of stereotaxis striped.

Why Fig. 9 signal realizes accurate resetting from the epidermis labelling.

Figure 10 illustrates the method for using the breast fixed system.Last figure is an exploded view, and figure below is the sketch map of patient when accepting radiotherapy.

Specific embodiment

The present invention is a kind of mammary gland tissue fixing means and device for breast imaging and breast treatment service, and device can remain in image and the therapeutic process, the accurate geometrical relationship between breast, thoracic wall, one-tenth entablement or the treatment table.

In Fig. 1 and Fig. 2, implement first method of the present invention, promptly with double-deck negative pressure breast fixedly cup fix the structural representation of mammary gland position, this device comprises fixedly cup 1 of breast, it is communicated with vacuum source 12, among Fig. 2, the surface of cup assembly 1 is the double-decker of mutual adhesion, usually be recess (or being parabolic structure), purpose is to hold human breast, internal layer 7 comprises the rigid shell of a concave shape, shell has the perforation 10 of dense distribution, outer 8 is the rigid shell of concavity, its volume is big slightly, solid and airtight with air, internal layer 7 places in outer 8, but keep a little space between the two, a vacuum pipeline 3 is linked to each other with vacuum source 12 and vacuum state is transferred to space between internal layer 7 and outer 8 according to traditional conduit mode, outer 8 comprise the various edge of a layer use 2: install and localization method for the cup assembly provides, provide sagging rank in addition so that internal layer 7 is embedded outer 8, in addition, vacuum pipeline 3 transfers to above-mentioned space with the inner passage that forms in the edge 2.

In use, mammary gland tissue is because of being subjected to be deflected from thoracic wall from the negative pressure of vacuum source 12, its epidermis is pasted mutually with the inner cover wall, vacuum source 12 is introduced space between inner cover 7 and the outer housing 8 by vacuum tube with negative pressure, the breast epidermis is adsorbed on the inwall of interior cup, thereby stop the epidermis of breast and the slippage between the cup internal layer 7, vacuum source 12 links to each other with a vacuum (negative pressure) actuator, thereby at an easy rate the negative pressure between the two-layer cup is controlled within the fixed scope of weighing apparatus, for at utmost guaranteeing precision, repeatability and patient's comfort level, stable performance, the vacuum source that is easy to control is most important.

Employed vacuum source 12 preferably can possess following feature: 1) should be convenient for carrying because at imaging patients, shift, wait to see the doctor and therapeutic process in need stable, continual vacuum; 2) the compatible MRI of raw material also can use in the MRI room; 3) possess repeatability, thereby crime prevention system fault and vacuum descend; 4) vacuum level of tunable integer body is equipped with warning system to keep system conformance and to get rid of potential safety hazard.

The edge 2 of cup assembly is hard annular rim, can be the part of outer housing 8, on this ring limit 2, be distributed with several pinnings 5, be Fig. 2 and shown in Figure 3, the ailhead of pinning 5 passes the cover of binding with patient body and encloses a harness outwardly, and in the lockhole on insertion image bed or the therapeutic bed, so the distribution in the hole on the cover circle should be consistent with the distribution of pinning on the cup edge.

Edge 2 also can be used for fixing/installing other functional structures such as vacuum pipeline, image stereotaxis striped.

In view of said fixing equipment very likely uses in the process of CT and MRI scanning, produce all raw material of cup assembly, suppressing cup etc. including, but not limited to cup, edge, pinning, the cover circle-harness of health binding, breast should be by making with the material or the nonmetallic materials of MRI compatibility.

This system is specially for using in the lump with becoming entablement, treatment table or other supporting constructions, allow the patient accept image or treatment in the ventricumbent position, face down, when the patient is the ventricumbent position, its mammary gland tissue is easy to separate from thoracic wall, is easier to thus breast imaging photography (need not expose intrathoracic thoracic wall and tissue), owing to introduce negative pressure among the present invention, more help mammary gland tissue is gone out from traction of chest wall, this makes the radiation targeting accurately be more prone to the location.

During use, earlier patient's breast is put into double-deck cup, the edge pastes mutually with the skin of thoracic wall, interior cup should have different sizes, should select to use with the sizable interior cup of patient's chest, after placing breast and cup relative position, implement negative pressure again, get under the more satisfactory situation in fixed-site, the braces that will link to each other with cover circle is tied up and is rolled on the patient body and tightens up, then the patient is placed on image or the therapeutic bed, and, pinning is pinned with the intravital locking device of bed in the lockhole on pinning and the insertion bed body.

Pinning inserts the lock in the lockhole and opens desirable multiple mode, and the locking device of the spring top bead of any common usefulness or wedge shape lockpin-type all can be realized this function.

After the patient lies on the body, cup assembly 1 is by health fixture and bed structure locking, so conveniently finish various image scannings, as CT, NMR or PET, after the patient finishes image scanning, may need to take off and replace that (treatment sometimes can continue many days, is not suitable for executing for a long time negative pressure under some medical condition behind the fixed system again.), in this case, when being necessary once more image or treatment, need recover the geometrical relationship set up between breast, cup, thoracic wall, image and treatment table or the therapeutic bed exactly, pinning 5 is certainly pinned again, but problem is that breast whether can be as accurate location in cup in the past, and use skin marker and with reference to the labelling lattice on the cup can address this problem.

For implementing the skin marker system, the skin 8 of cup assembly 1 is preferably made by transparent material (plastics), internal layer 7 also should be transparent, at the inner surface of inner cover 7 with meticulous head-stamp or etching mark line, from the exterior visual inner surface, for example, Fig. 1 has shown the grid of axial striped 6a and radial streak 6b, before putting vacuum (-tight) housing cup assembly 1 first, on skin of breast, do some labellings, the layer 7 and the layer 8 that see through translucent cover cup assembly 1 in whole therapeutic process still can be seen skin marker, the grid of mint-mark is equivalent to a coordinate system on inner cover, each all can have the coordinate of its uniqueness at the point of breast epidermis labelling, writes down and keeps the coordinate of these epidermis gauge points just can guarantee accurate localized repeatability.

In the geometric position that keeps pinning 5 when constant, can be with cup with differing heights (h) and diameter, thus the breast that is fit to vary in size.

Fig. 3 is a vertical view of explaining the equipment of radial streak 6b and axial striped 6a, every shown radial streak 6b and labelling and the structure of axial striped 6a are all inequality, so all there is the unique coordinate of a cover any point on the internal layer 7 of cup assembly 1, can utilize these record coordinates to keep the accuracy of breast positioning.

The present invention includes a stereotactic system, be used for setting up the coordinate system that a cup is constructed as benchmark, and fault image is placed this coordinate system exactly, stereotactic function strengthens striped 4a by image and 4b realizes.These stripeds are shown as the bright spot in the outer rim of mammary gland in faultage image, these stripeds can be got different modes, as long as their math equations in the coordinate system of navigation system are certain and surround whole cup.One of implementation method is shown in Fig. 1, Fig. 3 and Fig. 8, and stereotaxis is realized that by two stripeds striped 4a walks around the top from the cup root and returns root, is " U " shape.Striped 4b one places the ring of cup root.

Fig. 3 has also shown above-mentioned stereotaxis striped 4a and 4b, they all can be 3 bright spots on arbitrary tomography (both horizontal plane cross-section) image, this coordinate of 3 has been determined the locus of entire image in this mammary gland navigation system, and the description to Fig. 8 will be further explained this below.

Fig. 4 is for implementing the axonometric chart of second method of the present invention, and the space that inside and outside cup shown in Figure 1 is folded further is divided into a plurality of independently subspaces or negative pressuren zone, and the negative pressure of each subspace can be regulated separately.Such arrangement can make the coordinate of adjusting breast epidermis gauge point when locating repeatedly realize easily.

Fig. 5 is the structural representation of the cutaway view of equipment among Fig. 4.

Comprehensive reference Fig. 4 and Fig. 5, system among their system and Fig. 1 and Fig. 2 is similar, cup assembly 11 is communicated with vacuum source 12 by air effect, yet, as shown in Figure 4, the skin 8 of cup assembly 1 comprises numerous separation rib 11, separation rib 11 is separated into many subspaces to inner cover 7 and 8 clip spaces of outer housing, marking and indicated between three spatial domains herein is A, B and C, independently post the corresponding numbering of vacuum pipe 3A-C on the pipeline, these independently pipeline be connected with vacuum source 12, and in the spatial domain that separates by the band A-C between layer 7 and the layer 8, transmit three different vacuum pressures, same edge 2 is propagated in three vacuum pipe 3A-C by different inside channels, and inner channel enters the spatial domain by edge 2.

When the patient being put, can execute different negative pressure by these three pipelines to this three sub spaces independently with the control valve that vacuum source 12 links to each other, utilize this characteristics, when when putting the position again, the part that the breast position can have been adjusted is exerted pressure fixing, and be convenient to partial the exerting pressure that will adjust to adjust, thereby reach the repetitive positioning accuracy of final requirement.

If possess any one equipment of front, during a breast, should try not to expose another breast in treatment, can be placed on the breast that need not to treat and reach this purpose by breast being suppressed the cup assembly.

In Fig. 6, breast suppresses cup assembly 21 and generally comprises above-mentioned flange 2 and pinning 5, but flat breast suppresses plate 13 be can be used for limiting the breast that need not to treat and makes it flat, when the patient is in prone position, need not the sagging breast that need not to treat of radiation, otherwise it is complicated that therapeutic process can become, the dish breast suppresses plate 13 breast is suppressed on the thoracic wall, for treatment is provided convenience and is reduced the mammary gland that is exposed in the radiation, for improving patient's comfort level and aeroseal situation, the one side that breast suppresses plate 13 close skins can have one deck elasticity colloidal material.

Fig. 7 is with bra cup and the cover circle of patient's body binding and the sketch map of harness, for bra cup is fixed on the trunk, the cover circle 14 that will go in ring earlier is enclosed within on the cup and with the edge 2 of cup to be close to, cover circle be provided with the cup edge on pinning follow closely hole 15 accordingly, two cover circles connect with elastic cord 16, fasten around the braces 18 of tying up trunk both sides at cover circle 14, when needs are bound, the braces of both sides is strained with clasp, need to prove that this only is one of feasible embodiment, can directly be buckled in for braces and cancel cover circle 14 on the edge of cup, in order further to increase the stability of cup, we can add two braces on the shoulder.

Fig. 8 has disclosed the operation principle that why realizes the 3 D stereo orientation with the stereotaxis striped, modern image means are CT, MRI can provide the 3-D view of body structure, precision reaches millimeter and submillimeter, these images are the location of carrying out tumor, the basis of the enforcement of treatment plan and radiotherapy, because the used coordinate system and the coordinate system of therapy apparatus do not have fixed geometrical relationship during image, accurate, exactly focus is placed that with therapy apparatus the coordinate system of fixed geometrical relationship to be arranged be to guarantee to dispel tumor, and the key of minimum influence normal structure, according to the present invention, medicated bra can be locked in the image bed with identical form and treat on the bed, but the coordinate system that with the cup is benchmark not only can be independent of image system but also with radiotherapy machine fixed geometrical relationship is arranged, the determining of this coordinate system realized by two stereotaxis stripeds, article one, rounded, place the cup root, another is " U " shape, be 45 with left and right directions, and holding cup cover, this two striped can be liquid or solid, and in image sincere high signal, in each faultage image, the faultage image of these two stripeds is that three bright spots (are 19:a, b, c and 20:a, b, c), distance between these 3 is the locus in the unique cross section of having established this faultage image, gather this position of 3 in a plurality of faultage images, bistriate space curve has just been set up, because their equations in the coordinate system that with the cup is benchmark are known, then the relation of the pixel ordinal number of image and actual size has just been determined, the coordinate in this mammary gland navigation system of any point in any fault image has also just had.

As shown in Figure 8, with image slices 19 is example, the geometric position of the intersection point of it and striped 4a (some 19a and 19c) and striped 4b (some 19b) and in any other image slices (as cutting into slices 20) geometric position of intersection point all inequality, therefore for any image slices, can set the physical location of its relative cup assembly according to three position of intersecting point in its image.

Fig. 9 is illustrated as how the epidermis labelling and realizes resetting accurately, and the 23rd, the breast that need not to treat, the 24th, the breast for the treatment of.Before putting the cup assembly first, on the treatment breast, do a lot of semifixed skin marker (21), put the cup assembly, and after reaching specified vacuum level and positioning requirements, can write down the corresponding coordinate of each skin marker of meticulous head-stamps in internal layer 7 by transparent inner cover 7 and transparent housing 8, these record coordinates (22) can instruct repetitive therapy after a while.

Figure 10 uses this mammary gland navigation system when where being illustrated as image and radiotherapy, last figure is an exploded view, wherein indicate trunk interface 7, thoracic wall 26, contain the breast 24 of tumor 25 and the breast 23 that offside need not to treat, double-deck breast fixedly cup 1 suppresses dish 13 with the offside breast, is used to bind the cover circle and the braces of medicated bra, and figure below is the sketch map of patient when receiving treatment.Make breast suppress dish and flatten the offside breast, significantly reduced radiation, and made the easier aligning of lonizing radiation target area no tumor breast.

Can find out obviously that now above-mentioned breast tissue fixing device and system are accurate, reliable and have predictability, when being in prone position, the patient is convenient to be imaging shooting and oncotherapy, when needing repetitive therapy, finish duplicating of geometry location, in addition, force down the breast that need not to treat as far as possible, reduce unnecessary radioactive exposure.

After illustrating first-selected device and implicit some theory in the present invention fully, obviously those people that are skilled in technique can design other devices that various principles are identical and structure is different to the understanding of basic concept according to them, or make some variation and change with regard to device shown here and that describe, for example, though the first-selected structure of cup assembly 1 has two-layer, one deck also can be worked (two-layer device more can adapt to different big or small breast) well under many circumstances, therefore, on these structures or the change in implementing should belong to authority of the present invention and be to be understood that.

The present invention is simple in structure, and is easy to use, and dependable performance is widely used in breast fixing means and device field in the human breast prostrate radiotheraphy.

Claims (7)

1, the breast immobilization device in the human breast prostrate radiotheraphy, being used for carrying out breast image and breast carcinoma radiotherapy in the ventricumbent position is the precise geometrical relation that keeps between breast, thoracic wall and support patient's the bed body.This positioner is made up of following parts:

Breast fixed cover cup assembly includes the interior cup of a plurality of air-vents and the outer cup of sealing.Both are bowl-shape and on top edge is closely continuous.Between two covers space identical with suction nozzle arranged, thereby can execute negative pressure breast is fixed.

One of two above-mentioned cups have the belt edge of pasting with thoracic wall, are equipped with on it and the device of bed body location with locking, are alignment pin or wedge shape lock pin.

Lay with two the cover between the identical aspirating air pipe in space.

The negative pressure control valve and the vacuum source that link to each other with above-mentioned aspirating air pipe.

2, the breast immobilization device in the human breast prostrate radiotheraphy according to claim 1 is characterized in that described its inside and outside cup institute clip space is divided into a plurality of independently subspaces, and negative pressure can be independently executed in each space, thereby the breast subregion is fixed.

3, the breast immobilization device in the human breast prostrate radiotheraphy according to claim 1, it is characterized in that described on inner cover the strong coordinate line of mint-mark grid, thereby can observe and be recorded in the coordinate of the supracutaneous gauge point of patient's chest, realize resetting accurately.

4, the breast immobilization device in the human breast prostrate radiotheraphy according to claim 1 is characterized in that the described stereotaxis Mk system that also comprises.This stereotaxis Mk system is made up of the striped that contains the image reinforcing agent of some.These stripeds are attachable to cup, also are attachable to independently on the framework.

5, the breast immobilization device in the human breast prostrate radiotheraphy according to claim 1 is characterized in that the described device of binding with patient's trunk that comprises, is cover circle, braces etc.

6, the breast immobilization device in the human breast prostrate radiotheraphy according to claim 1 is characterized in that the described locking device installed on the bed body of supporting the patient of being included in is locked on the body will invent 1 breast positioning device.

7, the breast fixing means in the human breast prostrate radiotheraphy according to claim 1 makes that step is on the method for the precise geometrical relation of bed between the body that keeps breast, thoracic wall and support patient during image and the treatment:

At first, select and the sizable interior cup of patient's chest, become the double-deck negative pressure medicated bra of a cover with outer cup close-fitting, patient's chest is covered in wherein.

Secondly, connect vacuum tube, negative pressure is executed in the folded space of double-deck cup in vacuum source and pressure valve.

Then, reaching fixedly with braces, the cover circle of cup is bundled in double-deck negative pressure medicated bra on patient's trunk.

At last, the patient is prostrate on a body of image or treatment, and this body has the hole that allows breast cup pass through to reach the device that pins cup is arranged around this hole, locks cup and has guaranteed that promptly the precise geometrical between breast and the bed body concerns.

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