CN112829303A

CN112829303A - Thin film dot matrix shaping device

Info

Publication number: CN112829303A
Application number: CN202110189561.0A
Authority: CN
Inventors: 程龙
Original assignee: Central Hospital of Wuhan
Current assignee: Central Hospital of Wuhan
Priority date: 2021-02-19
Filing date: 2021-02-19
Publication date: 2021-05-25
Anticipated expiration: 2041-02-19
Also published as: CN112829303B

Abstract

The invention provides a film dot matrix shaping device, which comprises a workbench bedplate, wherein an array needle plate is arranged on the workbench bedplate, the array needle plate comprises a plurality of slidable positioning needle columns, a shaping device is arranged above the array needle plate, the shaping device comprises a shaping film and a shaping glue nozzle, the positioning needle columns are pressed downwards to deform the shaping film, and the shaping glue nozzle is used for spraying shaping glue to the shaping film; by utilizing a digitization technology, the virtual model is quickly converted into a real model, so that the participation of doctors is improved, and the windowing position outside the aortic stent body is conveniently and visually confirmed; the shaping device is arranged, so that the profile surface formed by the arrangement needle plate can be conveniently rubbed, the shaping speed of the shaping die is high, and the carrying and the use are convenient.

Description

Thin film dot matrix shaping device

Technical Field

The invention relates to the field of auxiliary medical instruments, in particular to a film dot matrix shaping device applied to aortic stent windowing.

Background

The prior pre-windowing or branched aorta stent needs to upload the imaging data of a patient to a laboratory of an instrument manufacturer, an engineer uses imaging processing software to analyze and process the data to obtain the position relationship between each branched blood vessel and the aorta and the size and shape of an opening, and then windowing operation or branch pre-setting is carried out on the stent according to the data. Such procedures result in long stent customization period, low windowing efficiency, insufficient accuracy, incapability of direct participation of operating physicians, and incapability of obtaining customized stents for emergency treatment or emergency surgery. Therefore, the process is difficult to be widely developed, the whole operation process is time-consuming and labor-consuming, and the cost and risk are high. In addition, the formed solid model needs to have the characteristics of light weight and easiness in taking and placing, and can be conveniently brought into an operating room and other places for field use.

In the prior art, reference is made to CN 106618795 a, a method for performing aortic stent body external windowing by using a 3D printing model, in the method, a virtual model is converted into a real model by mainly using 3D printing, although the model obtained by the method is light and easy to take and use, the 3D printing is a continuous stacking method, the preparation time and the printing time often exceed one hour, and the method is not very suitable for emergency surgery.

Disclosure of Invention

The invention provides a thin film dot matrix shaping device, which is used for fitting a solid model through key point data and solving the problems of long forming time, low efficiency and inconvenience in carrying of an aorta model in the traditional virtual model forming technology.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a film dot matrix setting device, includes the workstation platen, is equipped with the array faller on the workstation platen, and the array faller includes a plurality of slidable location needle posts, and array faller top is equipped with setting device, and setting device glues the nozzle including the design membrane with the design, and the location needle post pushes down makes the design membrane warp, and the design is glued the nozzle and is used for spraying the design to the design membrane and glues.

In the preferred scheme, the sizing adhesive is ultraviolet adhesive, and ultraviolet lamps are arranged on two sides of a sizing adhesive nozzle and used for irradiating the sizing film.

In the preferred scheme, an air nozzle is arranged between the sizing glue nozzle and the ultraviolet lamp, and exhaust valves are arranged at the two sides of the sizing film in the sizing device.

In the preferred scheme, the array needle plate further comprises a damping box, a plurality of needle column sleeves are arranged in the damping box and are in sliding sleeve connection with the positioning needle columns, positioning plates are arranged on two sides of the damping box, and the positioning needle columns penetrate through the positioning plates.

In the preferred scheme, an air cavity is further arranged in the damping box, a one-way air valve is further arranged on the damping box, and the one-way air valve is communicated with the air cavity.

In the preferred scheme, one end of the damping box is further provided with an adjusting cavity, the adjusting cavity is communicated with the air cavity, a plunger is connected in the adjusting cavity in a sliding mode, a sealing ring is sleeved on the outer ring of the plunger, one end of the air cavity is further connected with an end cover, an adjusting jackscrew is connected in the end cover in a threaded mode and penetrates through the end cover to abut against the plunger.

In the preferred scheme, the lower end of the positioning needle column penetrates through a workbench bedplate, a three-axis mechanism is arranged below the positioning needle column, a profiling mechanism is arranged on the three-axis mechanism and comprises a profiling head, and the profiling head is used for pressing the positioning needle column.

In the preferred scheme, the profiling heads are a plurality of and are arranged in a straight line, the profiling mechanism further comprises a first mounting plate and a micro motor, the profiling heads are in sliding sleeve connection with the first mounting plate, the upper ends of the profiling heads are connected with the micro motor, and the micro motor drives the profiling heads to slide up and down.

In the preferred scheme, a screw is arranged on one side of the profiling head, the profiling mechanism further comprises a second mounting plate, two ends of the screw are respectively in rotating sleeve joint with the first mounting plate and the second mounting plate, a nut is sleeved on the screw, and a lock pin is further arranged, and the nut is connected with the profiling head through the lock pin;

the upper end of the screw rod passes through the second mounting plate to be connected with the micro motor.

In the preferred scheme, a profiling strip is arranged below the profiling head, two sides of the profiling mechanism are provided with winders, a winding wheel is arranged in each winder, two ends of each profiling strip are connected with the winding wheel, and a torsion spring is arranged in each winding wheel;

still be equipped with two at least spacing wheels in the winder, spacing wheel is established in profile modeling strip both sides, and spacing wheel supports and leans on and rotates on the profile modeling strip.

The invention has the beneficial effects that: by utilizing a digitization technology, the virtual model is quickly converted into a real model, so that the participation of doctors is improved, and the windowing position outside the aortic stent body is conveniently and visually confirmed; the shaping device is arranged, so that the profile surface formed by the row of needle plates can be conveniently rubbed, the shaping speed of the shaping die is high, and the carrying and the use are convenient; the whole row of needle columns are pressed through the profiling device, and the needle columns do not need to be pressed one by one, so that the forming time is greatly saved; the needle columns are uniformly stressed, the friction resistance is convenient to adjust, and hovering at any position can be realized; the linear motion mechanism is packaged below the workbench, and has the advantages of attractive appearance, convenience in use and high safety.

Drawings

The invention is further illustrated by the following figures and examples.

FIG. 1 is a schematic of the present invention.

Fig. 2 is an enlarged schematic view at a of the present invention.

Fig. 3 is a schematic view of an embodiment of the setting device of the present invention.

Fig. 4 is a cross-sectional view B of the array needle board of the present invention.

Fig. 5 is a cross-sectional view C of the array needle plate of the present invention.

Figure 6 is a schematic view of the damping tank of the present invention.

FIG. 7 is a schematic view of a profiling mechanism of the present invention.

FIG. 8 is a schematic diagram of a profiling mechanism embodying the present invention.

FIG. 9 is a simplified model schematic of the aorta of the present invention.

In the figure: a worktable plate 1; a three-axis mechanism 2; a profiling mechanism 3; a profiling head 301; a first mounting plate 302; a lock pin 303; a nut 304; a screw 305; a second mounting plate 306; a micro motor 307; a profile strip 308; a winder 309; a wind-up wheel 310; a limiting wheel 311; an array needle plate 4; a damper box 401; a needle hub 402; a positioning pin 403; a positioning plate 404; an air cavity 405; a one-way gas valve 406; a plunger 407; a seal ring 408; an end cap 409; adjusting the jackscrew 410; the adjustment chamber 411; a shaping device 5; a shaping film 501; a sizing nozzle 502; an ultraviolet lamp 503; an air tap 504; an exhaust valve 505; an aorta model 6; and a branch 601.

Detailed Description

As shown in fig. 1-9, a film dot matrix setting device includes a working table board 1, an array needle plate 4 is disposed on the working table board 1, the array needle plate 4 includes a plurality of slidable positioning needle pillars 403, a setting device 5 is disposed above the array needle plate 4, the setting device 5 includes a setting film 501 and a setting glue nozzle 502, the positioning needle pillars 403 are pressed downward to deform the setting film 501, and the setting glue nozzle 502 is used for spraying setting glue to the setting film 501.

The method comprises the steps of extracting key point data by using virtual data of an aorta model 6 and branches 601 of the aorta model, enabling the key point data to correspond to the array needle bar row positions, pressing or continuously shifting a plurality of positioning needle bars 403 by using a digital three-axis mechanism to enable the upper ends of the positioning needle bars 403 to be formed into specific contour surfaces, extruding a shaping film 501 by the contour surfaces, enabling the shaping film 501 to be a thin film flexible material, enabling the shaping film 501 to be deformed by pressing to form a curved surface which is the same as the contour surface of the upper end of an array needle bar 4, opening a shaping glue nozzle 502, spraying a proper amount of shaping glue to the other side of the shaping film 501, enabling the shaping glue to be quick-drying glue, enabling the shaping film 501 to be quickly solidified after being sprayed to the shaping film 501.

In a preferred scheme, the sizing agent is ultraviolet adhesive, ultraviolet lamps 503 are arranged on two sides of the sizing agent nozzle 502, and the ultraviolet lamps 503 are used for irradiating the sizing film 501.

The setting time of the fast-drying ultraviolet glue is about 30s generally, the forming time can be greatly saved, materials with fine gaps such as textile fabrics can be selected as the forming film 501, the forming glue nozzle 502 sprays a proper amount of ultraviolet glue to the textile fabrics, the ultraviolet glue is solidified after the ultraviolet lamp 503 irradiates, the textile fabrics are quickly formed into a model of the aorta model 12 with branches 1201, the textile fabrics are lighter and low in cost, and the fast-drying ultraviolet glue is more convenient to use on site compared with the array needle plate 4 and is suitable for batch fast forming.

In a preferred scheme, an air nozzle 504 is arranged between the sizing glue nozzle 502 and the ultraviolet lamp 503, and exhaust valves 505 are arranged at two sides of the sizing film 501 in the sizing device 5.

If the setting film 501 is made of an air-impermeable material, the air outlet valve 505 and the air nozzle 504 are required to be opened before the setting device 5 is used, a flowing air curtain is formed between the air outlet valve and the air nozzle, the setting glue is prevented from being sprayed onto the ultraviolet lamp 503, and meanwhile, redundant setting glue can be taken away to prevent the setting glue from spreading in the inner space; if the shaping film 501 is made of a breathable material such as fabric, the exhaust valve 505 is closed, the air nozzles 504 are opened, air is discharged from the pores of the shaping film 501, the air pressure and the air flow are adjusted to be proper, shaping glue is sprayed, and the air flow can guide the micro-mist of the shaping glue to the shaping film 501 and permeate the shaping film.

In a preferable scheme, the array needle plate 4 further comprises a damping box 401, a plurality of needle post sleeves 402 are arranged in the damping box 401, the needle post sleeves 402 are in sliding sleeve connection with positioning needle posts 403, positioning plates 404 are arranged on two sides of the damping box 401, and the positioning needle posts 403 penetrate through the positioning plates 404;

in a preferable scheme, an air cavity 405 is further arranged in the damping box 401, a one-way air valve 406 is further arranged on the damping box 401, and the one-way air valve 406 is communicated with the air cavity 405.

The holes in the positioning plate 404 are positioning holes, which play a positioning role for the positioning needle pillars 403, the surrounding skeleton and the upper and lower surfaces of the damping box 401 are rigid, the inner cavity is closed, the needle pillar sleeve 402 is made of flexible materials such as rubber or silica gel, when the air cavity 405 is inflated, each positioning needle pillar 403 receives equal-size and uniform extrusion force in unit area, the needle pillar sleeve 402 generates certain friction resistance for the positioning needle pillars 403, the resistance received by each positioning needle pillar 403 can be uniformly adjusted by adjusting air pressure, so that the positioning needle pillars 403 can hover, and meanwhile, the phenomenon of 'carriage slipping' that the position overshoots when the positioning needle pillars 403 are subjected to rapid collision or extrusion is prevented.

In a preferable scheme, one end of the damping box 401 is further provided with an adjusting cavity 411, the adjusting cavity 411 is communicated with an air cavity 405, a plunger 407 is connected in the adjusting cavity 411 in a sliding mode, a sealing ring 408 is sleeved on the outer ring of the plunger 407, one end of the air cavity 405 is further connected with an end cover 409, an adjusting jackscrew 410 is connected in the end cover 409 in a threaded mode, and the adjusting jackscrew 410 penetrates through the end cover 409 and abuts against the plunger 407.

The volume of the air chamber 405 can be changed by rotating the adjusting jackscrew 410, thereby changing the air pressure.

In a preferred scheme, the lower end of the positioning needle column 403 penetrates through the workbench bedplate 1, a three-axis mechanism 2 is arranged below the positioning needle column 403, a profiling mechanism 3 is arranged on the three-axis mechanism 2, the profiling mechanism 3 comprises a profiling head 301, and the profiling head 301 is used for pressing the positioning needle column 403.

The three-axis mechanism 2 can drive the copying mechanism 3 to realize X, Y and Z-direction linear movement and stay at a set position.

In a preferable scheme, the plurality of the profiling heads 301 are arranged in a line, the profiling mechanism 3 further comprises a first mounting plate 302 and a micro motor 307, the profiling heads 301 are slidably sleeved with the first mounting plate 302, the upper end of the profiling head 301 is connected with the micro motor 307, and the micro motor 307 drives the profiling heads 301 to slide up and down.

In a preferable scheme, a screw 305 is arranged on one side of the profiling head 301, the profiling mechanism 3 further comprises a second mounting plate 306, two ends of the screw 305 are respectively rotatably sleeved with the first mounting plate 302 and the second mounting plate 306, a nut 304 is sleeved on the screw 305, a lock pin 303 is further arranged, and the nut 304 is connected with the profiling head 301 through the lock pin 303;

the upper end of the screw 305 passes through the second mounting plate 306 to be connected to the micro motor 307.

The profiling strips 308 are made of materials with moderate flexibility, the micro motor 307 drives the screw 305 to rotate, the nut 304 drives the profiling heads 301 to press the profiling strips 308, the profiling strips 308 press the positioning needle posts 403 after being deformed, the profiling heads 301 press down to force the profiling strips 308 to form required contour lines, errors between the contour lines and theoretical contour lines formed by theoretical coordinate points depend on the diameter difference between the profiling heads 301 and the positioning needle posts 403, the diameters of the profiling heads 301 can be set according to required precision, if the precision is sufficient, the diameters of the profiling heads 301 are properly increased within an error allowable range, the number of the profiling heads 301 is reduced, a small number of the profiling heads 301 are controlled to form the profiling strips 308, if the precision is required to be improved, the diameters of the profiling heads 301 are reduced, and the arrangement density of the profiling heads 301 is increased; the single-row positioning needle column 403 is formed by the profiling strip 308, the shape of the profiling strip 308 is adjusted, the profiling strip 308 is driven by the three-axis mechanism 2 to translate to the next row, and the array needle plate 4 can be formed into a specific profile surface by repeating the steps.

In a preferable scheme, a profile modeling strip 308 is arranged below a profile modeling head 301, two sides of a profile modeling mechanism 3 are provided with winders 309, a winding wheel 310 is arranged in each winder 309, two ends of each profile modeling strip 308 are connected with the winding wheel 310, and a torsion spring is arranged in each winding wheel 310;

the winder 309 is further provided with at least two limiting wheels 311, the limiting wheels 311 are arranged on two sides of the profile modeling strip 308, and the limiting wheels 311 abut against the profile modeling strip 308 to rotate.

The two ends of the profile modeling strip 308 are wound on the winding wheel 310, the limiting wheel 311 clamps the two side surfaces of the profile modeling strip 308 to limit the profile modeling strip 308, the profile modeling strip 308 is elastically deformed when being pressed by the positioning needle posts 403, the profile modeling strip 308 forms a certain contour line, if the displacement of the positioning needle posts 403 is large, the torsion spring is pulled to rotate when the elastic deformation reaches a certain upper limit value, the tension of the profile modeling strip 308 is reduced, and the damage is prevented.

The shaping method is as follows,

s1, carrying out CT or nuclear magnetic scanning on the aorta to obtain a DICOM file with image data;

s2, processing the DICOM file, extracting useful part data, and converting into three-dimensional digital software intermediate formats such as STL, STEP, IGS, etc.;

s3, analyzing and extracting the key point coordinates, and arranging the key point coordinates into a row and column form, wherein the XY value corresponds to the row and column of the array needle plate 4, and the Z value corresponds to the depth of the positioning needle column;

s4, processing the coordinate data of the key points by using three-dimensional processing software UG, mastercam and the like, and compiling a pressing path code file;

s5, filling air into the air cavity 405 by using the one-way air valve 406, and enabling the needle column sleeve 402 to tightly hold the positioning needle column 403 by air pressure to form certain friction resistance;

s6, rotating the adjusting jackscrew 410 to change the position of the plunger 407, so that the air pressure in the air cavity 405 is changed along with the change of the position of the plunger 407, and the frictional resistance is adjusted to a proper value;

s7, extracting the first row of coordinate point data, corresponding the first row of coordinate point data to the position of the copying head in a straight line arrangement, and corresponding the Z value of a certain coordinate point to the depth of the copying head 301 at the position;

s8, adjusting the depths of all the copying heads 301, wherein the lower ends of the copying heads 301 form a contour line and the copying strips 308 are deformed into a contour line similar to the contour line;

s9, the profiling strip 308 presses the first row of positioning needle pillars 403, so that the first row of positioning needle pillars 403 form a contour line similar to the profiling strip 308;

s10, lifting the profiling strip 308 to change the position of the profiling head 301 according to the next row of coordinate points, forming the profiling strip 308 with a new contour line, pressing the next row of positioning needle pillars 403, and repeating the steps until the array needle plate 4 is formed into a required curved contour;

s11, pressing the shaping film 501 at the upper end of the positioning needle column 403 to form the shaping film 501 into a certain shape;

s12, opening the sizing glue nozzle 502 to spray sizing glue to the sizing film 501;

s13, after the shaping film 501 is shaped, taking down the array needle plate 4, taking down the shaping film 501 and sterilizing by using steam or ethylene oxide, ultraviolet irradiation and other sterilization modes;

s14, placing the aorta stent in the shaped film 501, and marking the position of the aorta stent at the branch mouth;

s15, directly windowing or taking out the aortic stent and windowing at the marked position.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims

1. A thin film dot matrix setting device is characterized in that: including workstation platen (1), be equipped with array faller (4) on workstation platen (1), array faller (4) are including a plurality of slidable location needle posts (403), array faller (4) top is equipped with setting device (5), setting device (5) are including setting membrane (501) and setting glue nozzle (502), location needle post (403) are pushed down and are made setting membrane (501) warp, setting glue nozzle (502) are used for spraying the setting glue to setting membrane (501).

2. The film dot matrix shaping device as set forth in claim 1, wherein: the sizing glue is ultraviolet glue, ultraviolet lamps (503) are arranged on two sides of the sizing glue nozzle (502), and the ultraviolet lamps (503) are used for irradiating the sizing film (501).

3. The film dot matrix shaping device as set forth in claim 2, wherein: an air nozzle (504) is arranged between the shaping adhesive nozzle (502) and the ultraviolet lamp (503), and exhaust valves (505) are arranged at the two sides of the shaping film (501) in the shaping device (5).

4. The film dot matrix shaping device as set forth in claim 1, wherein: the array needle plate (4) further comprises a damping box (401), a plurality of needle post sleeves (402) are arranged in the damping box (401), the needle post sleeves (402) are in sliding sleeve connection with the positioning needle posts (403), positioning plates (404) are arranged on two sides of the damping box (401), and the positioning needle posts (403) penetrate through the positioning plates (404).

5. The film dot matrix shaping device as set forth in claim 4, wherein: an air cavity (405) is further arranged in the damping box (401), a one-way air valve (406) is further arranged on the damping box (401), and the one-way air valve (406) is communicated with the air cavity (405).

6. The film dot matrix shaping device as set forth in claim 5, wherein: damping case (401) one end still is equipped with adjustment chamber (411), adjustment chamber (411) and air cavity (405) intercommunication, sliding connection has plunger (407) in adjustment chamber (411), plunger (407) outer lane cover has sealing washer (408), air cavity (405) one end still is connected with end cover (409), threaded connection has adjustment jackscrew (410) in end cover (409), adjustment jackscrew (410) pass end cover (409) and lean on plunger (407).

7. The film dot matrix shaping device as set forth in claim 1, wherein: the lower end of the positioning needle column (403) penetrates through the workbench bedplate (1), a three-axis mechanism (2) is arranged below the positioning needle column (403), a profiling mechanism (3) is arranged on the three-axis mechanism (2), the profiling mechanism (3) comprises a profiling head (301), and the profiling head (301) is used for pressing the positioning needle column (403).

8. The film dot matrix shaping device of claim 7, wherein: the profiling mechanisms (3) further comprise a first mounting plate (302) and a micro motor (307), the profiling heads (301) are in a linear arrangement, the profiling mechanisms (301) are connected with the first mounting plate (302) in a sliding sleeved mode, the upper ends of the profiling heads (301) are connected with the micro motor (307), and the micro motor (307) drives the profiling heads (301) to slide up and down.

9. The film dot matrix shaping device as set forth in claim 8, wherein: a screw rod (305) is arranged on one side of the profiling head (301), the profiling mechanism (3) further comprises a second mounting plate (306), two ends of the screw rod (305) are rotatably sleeved with the first mounting plate (302) and the second mounting plate (306) respectively, a screw nut (304) is sleeved on the screw rod (305), a lock pin (303) is further arranged, and the screw nut (304) is connected with the profiling head (301) through the lock pin (303);

the upper end of the screw (305) passes through the second mounting plate (306) to be connected with a micro motor (307).

10. The film dot matrix shaping device as set forth in claim 8, wherein: a profile modeling strip (308) is arranged below the profile modeling head (301), two sides of the profile modeling mechanism (3) are provided with winders (309), a winding wheel (310) is arranged in each winder (309), two ends of each profile modeling strip (308) are connected with the corresponding winding wheel (310), and a torsion spring is arranged in each winding wheel (310);

at least two limiting wheels (311) are further arranged in the winder (309), the limiting wheels (311) are arranged on two sides of the profiling strip (308), and the limiting wheels (311) abut against the profiling strip (308) to rotate.