A kind of skin locator and its application
Technical field
The present invention relates to the field of medical instrument technology, in particular to a kind of skin locator and its application.
Background technique
When carrying out radiotherapy to patient, need first to prepare the body of the specific shape to match with patient peripheral's profile
Film, preparation method are usually to be placed into body film in 70 DEG C or so of water, on the body for covering patient after the softening of body film simultaneously
Fixed body film, after a period of time, body film is formed by curing the forming body film being adapted with the circumferential profile of the patient, such body film
Can immobilized patients position prevent from moving.When carrying out radiotherapy every time, body film need to be again fixed on patient body.For
It is accurate to make to put position, guarantees therapeutic effect, the fixed position on a patient body of each body film should remain unchanged.Currently, common
Body film localization method, mainly have following three kinds: first, positioned by the body surface distinctive mark of human body itself, as bone exists
Protrusion, the navel etc. that body surface is formed.Second, position line is drawn in the body surface of body film lower edges.Third passes through human body two sides
Laser rays level adjust the left and right relative position of human body and body film to realize positioning alignment.However, traditional body film is fixed
There is following defects for position method: first, when being positioned by body surface distinctive mark, the body surface distinctive mark of many patients is (such as fertilizer
Fat person) it is unobvious, it can not be accurately positioned;And the back of most people and the body surface distinctive mark of buttocks are unobvious, therefore
The body film positioning of prone position patient is also more difficult.Second, when each repeated positioning, positioning that body film lower edges and body surface are drawn
Line is difficult to fit like a glove.Third when being positioned using laser, usually only pursues the alignment of human body two sides horizontal line, cannot be to people
Position above and below body is positioned.In conclusion body film localization method in the prior art causes each treatment to put position effect
Difference, low efficiency.
Summary of the invention
Therefore, the technical issues of that the invention solves body film localization method effects in the prior art is poor, low efficiency, to mention
A kind of good positioning effect, high-efficient skin locator out.
The present invention provides a kind of skin locator, comprising:
Shell;
Fixing seat is mounted on outer casing bottom, and fixing seat bottom is equipped with several suckers, and centre is axially formed along fixing seat
Installation cavity;
Contact is mounted on the installation cavity of fixing seat, have stretch out fixing seat original state and by external force and
Retract to the working condition in fixing seat.Skin locator of the invention realizes positioning by contact, positions each skin
The placement location of device remains unchanged, and lives patient skin by sucker suction, keeps skin locator fixed on the skin, facilitates skin
Skin locator being fixed and removing, and has the advantages that good positioning effect, high-efficient, reusable.
Preferably, skin locator of the invention forms the air cavity being connected to sucker, installation in shell inside fixing seat
There is slide plate, the air exhaust rod for protruding into air cavity is provided on slide plate and is able to drive cunning when contact transforms to working condition from original state
Plate is connected to air exhaust rod far from sucker, so that the part for making air exhaust rod protrude into air cavity reduces.It is logical to be provided with the air cavity being connected to sucker
The volume that air exhaust rod changes air cavity is crossed, realizes that realize the control to force of suction cup, air cavity is arranged in the control to air cavity pressure
Afterwards, the suction of sucker can be greatly improved, improve the adsorption capacity of skin locator, prevent skin locator from falling, while to remove
When skin locator, only it need to reduce air cavity volume by air exhaust rod, skin locator can easily be removed by improving pressure.
Preferably, skin locator of the invention is additionally provided with top hollow fixing piece and fixed setting in installation cavity
The fixed column in fixing piece is protruded into bottom on slide plate, and the first elastic component, the both ends of the first elastic component are arranged with outside fixed column
It bears against in slide plate and is molded on the annular projection of fixing piece outer wall, closing piece, closing piece are additionally provided on the outer wall of fixed column
It is mounted in fixed column by elastic component, the protrusion that closing piece has the retracted state being retracted into fixed column and protrudes from fixed column
State is provided with lockhole on the fixing piece lateral wall, relative displacement can occur between fixing piece and fixed column, work as fixed column
When extending into fixing piece, closing piece can be protruded into lockhole with protruding condition, to make fixed column and fixing piece is fixed and compresses the
One elastic component;When contact is in running order, triggering closing piece is retracted into closing piece in fixed column, to make fixing piece and fixed column
Between release and fix, slide plate and fixed column are under the action of the first elastic component elastic potential energy away from the direction bullet of fixing piece
It opens, so that air exhaust rod be made to do the movement far from sucker in air cavity.By lockhole in fixing piece, fixed column, lock block structure and
The setting of first elastic component makes lockhole and closing piece solution by the elastic potential energy of lockhole and cooperation the first elastic component of storage of closing piece
After cooperation, under the drive of the first elastic component elastic potential energy, slide plate drives air exhaust rod quick acting, and air exhaust rod is quickly twitched,
So that air cavity is generated negative pressure rapidly, makes skin locator in use, can be on quick adsorption to skin.
Preferably, skin locator of the invention, contact inner hollow, fixing piece bottom is protruded into contact, and fixing piece
The second elastic component is provided between contact.The second elastic component, which is arranged, can keep contact in non-working condition in pop-up shape
State.
Preferably, skin locator of the invention is provided between slide plate and shell and stirs with what slide plate linkage was arranged
Circle, stirring circle can rotate inside the shell, and outer guide groove is formed on outer shell outer wall, and being also equipped with outside shell can be along described outer
The sliding block of guide groove movement, sliding block is moved through to stir to enclose by external force in outer guide groove drives slide plate to transport inside the shell
It is dynamic.By sliding block, the cooperation of stirring circle stretches so that people can drive skateboarding in sliding slider to change air exhaust rod
Enter the amount of air cavity, when changing gas cavity pressure, but needing to remove skin locator from skin, can be increased by stirring sliding block
Gas cavity pressure prevents from improving adsorption capacity and causing to be difficult to remove so that skin locator be made to be very easy to remove.
Preferably, skin locator of the invention, stirring circle intermediary form has mounting hole, forms and pacifies in interior of shell
The shaft for filling hole cooperation enables to stir circle and rotates around the shaft, stirs circle and has been separately formed first in two sides of mounting hole and stirs
Slot and second stirs slot, forms on sliding block and protrudes into the first drive shaft for stirring slot, forms on slide plate side and extend into second
The universal driving shaft of slot is stirred, when sliding block is moved along outer guide groove, stirring slot transmitting forces by driving axial first makes to stir
Circle rotation, and then slot is stirred to universal driving shaft transmission force by second, so that slide plate is generated the displacement contrary with slide block movement.It is logical
Above-mentioned setting is crossed, when stirring sliding block, slide plate generates the displacement contrary with slide block movement, namely when removing skin locator,
Sliding block is dialed up, meets the operating habit of people, while applied force also makes skin locator be easier to remove upwards.
Preferably, skin locator of the invention, shell are made of the top cover of taper and the ontology of tubular, and the sheet of tubular
Body has inside and outside two layers, and internal layer forms the interior guide groove in restricted skateboarding direction, and outer layer forms restricted slide block movement side
To outer guide groove.The top cover Yi Ti film molding of taper makes to form tapered protrusion, facilitates positioning, interior guide groove and outer guide groove
Respectively slide plate and sliding block provide the space of limit movement.
Preferably, skin locator of the invention, fixing seat bottom are also covered equipped with lid.Lid is set and protects sucker and touching
Head prevents dust and other foreign substance pollutions.
Preferably, skin locator of the invention is additionally provided with wet sponge in lid, and sucker is made to keep certain wet
Degree improves sealing effect when sucker suction skin, improves adsorption capacity.
Application of the above-mentioned skin locator in the positioning of body film is also claimed in the present invention.Skin locator of the present invention into
When row body film positions, effect of the body surface distinctive mark in the positioning of body film can be simulated, no longer transition relies on body surface
Distinctive mark has easy to use, good positioning effect, and accuracy is high, high-efficient advantage.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the skin locator of one embodiment of the present invention;
Fig. 2 is the structural schematic diagram of the shell of one embodiment of the present invention;
Fig. 3 is the structural schematic diagram for removing each component after outer cover and shell of one embodiment of the present invention;
Fig. 4 be one embodiment of the present invention remove outer cover after skin locator cross-sectional view;
Fig. 5 a is the fiting relation figure of the contact of the original state of one embodiment of the present invention, fixing piece and fixed column;
Fig. 5 b is the fiting relation figure of the contact of the working condition of one embodiment of the present invention, fixing piece and fixed column;
Appended drawing reference in figure are as follows: 1- shell;The outer guide groove of 11-;Guide groove in 12-;2- sucker;3- contact;31- is fixed
Part;311- lockhole;312- annular projection;The second elastic component of 32-;33- fixed column;Fixing piece;331- closing piece;The first elasticity of 34-
Part;4- sliding block;5- slide plate;51- universal driving shaft;6- air exhaust rod;7- stirs circle;71- first stirs slot;72- mounting hole;73- second
Stir slot;8- fixing seat;81- air cavity;9- lid.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings.
Embodiment
The present embodiment provides a kind of skin locators, as shown in Figs 1-4;
Shell 1 forms the outer guide groove 11 parallel with the axial direction of the shell 1 on outer wall, forms on inner wall and institute
The parallel interior guide groove 12 of the axial direction of shell 1 is stated, shell 1 is preferably the top cover of taper and the ontology of tubular, and ontology has inside and outside
Two layers, internal layer is for forming interior guide groove 12, and outer layer is for forming outer guide groove 11;
Sliding block 4 is mounted on outside the shell 1, and can be moved along the outer guide groove 11;
Fixing seat 8 is mounted on 1 bottom of shell (can be located in shell 1, can also partially be exposed to shell 1), the fixation
8 bottoms of seat are equipped with several suckers 2, and inside forms the air cavity 81 being connected to the sucker 2, and centre is along 8 axis of fixing seat
To forming installation cavity;
Slide plate 5 is arranged in the shell 1, is equipped with several air exhaust rods 6 extending into the air cavity 81, the pumping
It is mobile that gas bar 6 can follow slide plate 5, to move in the air cavity 81, and can be described outer by the limitation of interior guide groove 12
Axial linear movement is done in shell 1;
Contact 3 is mounted on the installation cavity of the fixing seat 8, have the original state for stretching out the fixing seat 8 and by
External force and retract to the working condition in the fixing seat 8,3 inner hollow of contact;
Fixing piece 31 is arranged in the installation cavity of the fixing seat 8, and bottom is protruded into the contact 3, and fixing piece 31 with
The second elastic component 32 is provided between contact 3,31 top of fixing piece is hollow, and lockhole 311, contact 3 are provided on lateral wall
Protrusion is formed on inner wall, forms protrusion on 31 outer wall of fixing piece, prevents fixing piece from touching by two raised cooperations
First 3 jump out disengaging out of fixing piece 31;
Fixed column 33 is fixed on the slide plate 5, and bottom extend into hollow interior, the institute at 31 top of fixing piece
It states and is arranged with the first elastic component 34 outside fixed column 33, the both ends of the first elastic component 34 bear against in the slide plate 5 and are molded over
On the annular projection 312 of 31 outer wall of fixing piece, closing piece 331 is additionally provided on the outer wall of the fixed column 33, closing piece 331 passes through bullet
Property part be mounted in the fixed column 33, the closing piece 331 has the retracted state that is retracted into fixed column 33 and protrudes from solid
Between the fixing piece 31 and fixed column 33 relative displacement can occur for the projected state of fixed column 33, when the fixed column 33 is stretched
When entering into fixing piece 31, the closing piece 331 can be protruded into lockhole 311 with protruding condition, thus make the fixed column 33 with
Fixing piece 31 is fixed and compressing the first elastic component 34 makes the first elastic component 34 store elastic potential energy;The contact 3 is in work shape
When state, triggering closing piece 331 retracts closing piece 331 in fixed column 33, fixes to make to release between fixing piece 31 and fixed column 33,
The direction of slide plate 5 and fixed column 33 under the action of the first 34 elastic potential energy of elastic component away from fixing piece 31 flicks, thus
Air exhaust rod 6 is set to do the movement far from the sucker 2 in air cavity 81;
Stir circle 7, be arranged between the ectonexine of the shell 1, intermediary form has a mounting hole 72, inside shell 1 at
Type has the shaft cooperated with mounting hole 72, enables to stir circle 7 around shaft rotation, the circle 7 of stirring is in 72 two sides of mounting hole
It has been separately formed first and stirs slot 71 and second and stirred slot 73, formed on the sliding block 4 and protrude into described first and stir slot 71
Drive shaft forms on 5 side of slide plate and extend into the second universal driving shaft 51 for stirring slot 73, and sliding block 4 is along the guide groove
11 when doing exercises, and stirring 71 transmitting forces of slot by driving axial first makes to stir 7 rotation of circle, stirs slot 73 by second
To 51 transmission force of universal driving shaft, slide plate 5 is made to generate the displacement opposite with 4 direction of motion of sliding block;
Lid 9, lid are mounted in 8 bottom of fixing seat, for protecting sucker 2 and contact 3, prevent dust and other foreign matters dirty
Dye, inside have sponge, and sponge usually contains the liquid such as water, alcohol, by the way that wet sponge is arranged, sucker 2 are made to keep certain
Humidity, improve sucker 2 adsorb skin when sealing effect, improve adsorption capacity.
Skin locator of the invention is before use, as shown in Figure 5 a, contact 3 is in the initial shape for stretching out the fixing seat 8
State, sliding block 4 are located at the top of outer guide groove 11, and when fixed column 33 extend into fixing piece 31, closing piece 331 can be stretched with protruding condition
Enter in lockhole 311, to keep fixed column 33 and fixing piece 31 fixed and compressing the first elastic component 34 stores the first elastic component 34
Elastic potential energy presses entire skin locator, contact 3 will stress in use, contact 3 is directed at the mark position on skin
It retracts in fixing seat 8 and is transformed to working condition from original state, in the process, phase occurs between contact 3 and fixing piece 31
To displacement, contact 3 is mobile toward top shown in Fig. 5 a, compresses the second elastic component 32 and fixing piece 31 is made gradually to extend into contact 3
It is interior, when contact 3 completely arrives at operating position, closing piece 331 will be touched, closing piece 331 bounces back, and is detached from lockhole 311, fixing piece
Fixed relationship, the elastic potential energy abrupt release of the first elastic component 34, slide plate 5 and fixed column 33 are relieved between 31 and fixed column 33
Direction under the action of the first 34 elastic potential energy of elastic component away from fixing piece 31 flicks, as shown in Figure 5 b, to make to take out
Gas bar 6 does the movement (top shown in Fig. 4) far from sucker 2 in air cavity 81, and sliding block 4 is also mobile from the top of outer guide groove 11
To outer 11 bottom of guide groove or close to the position of bottom, the volume of air cavity 81 increases, forms negative pressure, sucker 2 is made to adsorb skin
Skin surface.
When needing to remove skin locator from skin, then need to stir sliding block 4 to shown in Fig. 4 by external force (manpower)
Top it is mobile, sliding block 4, which can drive to stir circle 7 and form first, stirs one end of slot 71 to top shown in Fig. 3 " tiltings ", group
Moving-coil 7 forms one end that second stirs slot 73 and then moves downward, and slide plate 5, fixed column 33 and air exhaust rod 6 is driven to transport downwards together
Dynamic, air exhaust rod 6 does the movement close to sucker 2 in air cavity 81, has compressed air cavity 81, is improving the pressure initiation of air cavity 81 just
Pressure reduces 2 suction of sucker, skin locator is facilitated to remove from skin;Fixed column 33 is moved downward close to fixing piece 31 simultaneously,
So that closing piece 331 is come back in lockhole 311 locking for realizing fixed column 33 and fixing piece 31, in the process fixed column 33 with consolidate
Determine part 31 and compress the first elastic component 34 together the first elastic component 34 is made to store elastic potential energy again.
The skin locator of above-described embodiment realizes positioning by contact 3, makes the placement location of each skin locator
It remains unchanged, patient skin is adsorbed by sucker 2, keep skin locator fixed on the skin, facilitate skin locator
It is fixed and remove, have the advantages that good positioning effect, high-efficient, it is reusable.In above-described embodiment, it is provided with and sucker 2
The air cavity 81 of connection changes the volume of air cavity 81 by air exhaust rod 6, is realized by the control to 81 pressure of air cavity to sucker 2
The control of suction after air cavity 81 is arranged, can be greatly improved the suction of sucker 2, improve the adsorption capacity of skin locator, prevent skin
Locator is fallen, while when removing skin locator, need to only be passed through air exhaust rod 6 and be reduced 81 volume of air cavity, improve pressure
Easily removing skin locator, (in the case where not needing big suction, not needing setting air cavity 81 need to be arranged commonly
Sucker 2).The skin locator of the present embodiment, by lockhole 311 in fixing piece 31, fixed column 33,331 structure of closing piece and
The setting of first elastic component 34 makes to lock by the elastic potential energy of lockhole 311 and cooperation the first elastic component 34 of storage of closing piece 331
After hole 311 and closing piece 331 release cooperation, under the drive of 34 elastic potential energy of the first elastic component, slide plate 5 drives air exhaust rod 6 quick
Movement, air exhaust rod 6 are quickly twitched, and air cavity 81 is made to generate negative pressure rapidly, make skin locator in use, can quick adsorption to skin
On skin.Sliding block 4 is arranged in the skin locator of above-described embodiment, stirs circle 7 by the driving of sliding block 4 and slide plate 5 is driven to do the bottom of close to again
The movement in portion makes lockhole 311 with closing piece 331, again with increase 81 pressure of air cavity is merged, sucker 2 be desorbed smoothly with skin, make
Skin locator is very easy to remove, and solves the problems, such as to be not easy desorption under the big suction of sucker 2.
It is worth noting that most basic thinking of the invention is shell 1 to be arranged, for adsorbing the suction of human skin
Disk 2, contact 3 used for positioning, for installing sucker 2 and accommodating the fixing seat 8 of contact 3.Remaining component can be according to wanting
It asks and further increases setting.
The skin locator of the present embodiment can be used as forming and placing the positioning of radiotherapy body film, and detailed process is as follows, first exist
It is done well if being marked on human skin, if placing dry skin locator on the point of label, soft body film is placed on human body
On, after the solidification of body film, raised skin locator can form recess, each pendulum position later, it is only necessary in original on body film
Come there is skin to mark point on, by the positioning action of contact 3, skin locator is installed again, is then again placed into body film
With patient, positioning is cooperatively formed with what is be recessed by skin locator, when guaranteeing each radiotherapy position, body film pendulum position is reduced and misses
Difference, skin locator can simulate effect of the body surface distinctive mark in the positioning of body film, make proper film positioning no longer transition
Body surface distinctive mark is relied on, there is easy to use, good positioning effect, accuracy is high, high-efficient advantage.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to protection model of the invention
It encloses.