CN110974521B - 3D printing model for preventing uterine cavity from sticking and manufacturing method - Google Patents

3D printing model for preventing uterine cavity from sticking and manufacturing method Download PDF

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Publication number
CN110974521B
CN110974521B CN201911164254.6A CN201911164254A CN110974521B CN 110974521 B CN110974521 B CN 110974521B CN 201911164254 A CN201911164254 A CN 201911164254A CN 110974521 B CN110974521 B CN 110974521B
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head
uterine cavity
support column
wall
printing
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CN110974521A (en
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张小青
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Tongji Medical College of Huazhong University of Science and Technology
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Tongji Medical College of Huazhong University of Science and Technology
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F6/00—Contraceptive devices; Pessaries; Applicators therefor
    • A61F6/06—Contraceptive devices; Pessaries; Applicators therefor for use by females
    • A61F6/14—Contraceptive devices; Pessaries; Applicators therefor for use by females intra-uterine type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/42—Gynaecological or obstetrical instruments or methods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
    • B29C64/129—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask
    • B29C64/135—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/379—Handling of additively manufactured objects, e.g. using robots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/40—Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2240/001—Designing or manufacturing processes
    • A61F2240/002—Designing or making customized prostheses

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Reproductive Health (AREA)
  • Vascular Medicine (AREA)
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  • Pregnancy & Childbirth (AREA)
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  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract

The embodiment of the invention discloses a 3D printing model for preventing uterine cavity adhesion and a manufacturing method, which comprises a uterine cavity wall isolation head and a central support column fixed at the axis of the uterine cavity wall isolation head, wherein the head of the central support column is connected with the head of the uterine cavity wall isolation head, a capacity expansion cavity is arranged in the central support column, a head cavity is arranged between the inner wall of the uterine cavity wall isolation head and the outer wall of the central support column, the side wall of the central support column is provided with an air pressure balance hole for communicating the capacity expansion cavity and the head cavity, and the tail end of the central support column is provided with a tail fiber; still include an efficient 3D printing method to 3D prints the model and supports palace chamber wall, keeps apart contralateral palace chamber wall, prevents to glue and glues, compares traditional intrauterine device, reduces when putting in and taking out and causes the damage to patient's health, and keeps apart the effect to adjacent palace chamber wall better, and the fiber that sets up is convenient for take out of 3D printing the model, has avoided traditional line-shaped fiber to be breakable and the defect of easy shrinkage intrauterine.

Description

3D printing model for preventing uterine cavity from sticking and manufacturing method
Technical Field
The embodiment of the invention relates to the field of medical appliances, in particular to a 3D printing model for preventing uterine cavity from sticking and a manufacturing method.
Background
Intrauterine adhesion (IUA), also known as Asheman syndrome, is a condition of injury to the basal lamina of the endometrium due to trauma of pregnant or non-pregnant uterus, partial or total occlusion of the uterine cavity leading to abnormal menstruation, infertility or recurrent abortion etc., which is intrinsic to endometrium fibrosis. For patients with intrauterine adhesion, the intrauterine adhesion is often repeated, so that the treatment period is long, the psychological burden of the patients is increased, the pregnancy cost of the patients is increased, and the later pregnancy rate of the patients is affected.
In order to overcome the above problems, in the prior art, gong Qiangnian connection is often prevented by blocking medical apparatuses, for example, a balloon device for preventing and treating intrauterine adhesion in CN201621078598.7 in the prior art is attached to an intrauterine membrane by a water injection balloon device, so as to play roles in preventing adhesion and uplink infection. However, the following drawbacks still exist in the prior art:
(1) The existing saccule structure is generally made of PVC and other materials, is a soft structure, has hidden danger of breakage and pressure relief in the process of putting in and taking out a human body and using, is attached to human tissue mucous membrane when the human body is pressurized and supported, is easy to bond with human tissue and difficult to take down due to long-time large-area contact, and is easy to rejection with the human body due to the adoption of PVC-like materials.
(2) The existing balloon structures are generally produced in batches with fixed sizes, but in practical situations, the sizes of the uterine cavities of the human body are different, and if the matched balloons can be manufactured in real time according to the sizes of the uterine cavities, the existing preparation method cannot meet the requirements. .
Disclosure of Invention
Therefore, the embodiment of the invention provides a 3D printing model for preventing uterine cavity adhesion, which solves the problem that the size of uterine cavities of different patients cannot be met due to Gong Qiangyi repeated adhesion.
In order to achieve the above purpose, the embodiments of the present invention disclose the following technical solutions:
the utility model provides a prevent palace chamber and glue glutinous 3D printing model, includes palace chamber wall spacer head and fixes palace chamber wall spacer head axle center department's center support column, the head of center support column meets with palace chamber wall spacer head's head, be equipped with the dilatation chamber in the center support column, palace chamber wall spacer head's inner wall with be equipped with the head cavity between the outer wall of center support column, be equipped with the intercommunication on the lateral wall of center support column the atmospheric pressure balance hole of dilatation chamber and head cavity, the tail end of center support column is equipped with the tail wire.
Further, a plurality of X-shaped ribs are arranged on the inner cavity wall of the expansion cavity along the length direction of the inner cavity wall.
Further, a plurality of weight-reducing cavities are arranged in the central support column and the uterine cavity wall isolating head.
Further, the inner contour and the outer contour of the uterine cavity wall isolating head are both in an outward arc starting mode, the outer contour of the uterine cavity wall isolating head is in arc surface transitional connection with the outer contour of the central supporting column, and the arc starting radian of the head end of the uterine cavity wall isolating head is larger than that of the tail end of the uterine cavity wall isolating head.
Further, the tail end of the central support column is provided with a sucker fixing head which can be matched with the conical sucker, and the tail fiber is arranged at the tail end of the sucker fixing head.
Further, the length of the tail fiber is 0.5 cm-2 cm, and a plurality of anti-slip rings are arranged on the tail fiber.
In addition, the invention also provides a manufacturing method of the 3D printing model, which comprises the following steps:
step S100, selecting a curing plane, and coating photoresist for fixing the model main body on the curing plane;
step 200, extruding the liquid printing consumable material through a printing nozzle, gradually coating the liquid printing consumable material on a curing plane, adjusting a UV lamp to directionally cure the liquid printing consumable material in the coating process, and restricting the 3D printing process by slice data;
and step S300, repeating the step S200 until the required 3D printing model is completed, and polishing the surface of the completed 3D printing model.
Further, in the step S200, the method further includes printing the suspended portion, and the specific method for printing the suspended portion includes the following steps:
when printing on the suspended part, firstly printing a water-soluble supporting structure in the inner cavity;
attaching bonding points on the water-soluble supporting structure, connecting the bonding points to form a secondary curing plane, and coating photoresist on the secondary curing plane;
printing a suspended part model main body on the coated photosensitive adhesive through liquid printing consumables, and constructing a connector structure;
and (3) dissolving and guiding out the water-soluble supporting structure in the cavity before printing and closing in the suspended part, and continuing to print the tail part of the model in 3D after the model main body is dried until the required 3D printing of the model is completed.
Further, in the step S200, the specific steps of directional solidification are as follows:
the number of the UV lamps is selected, and the incidence angles of the UV lamps are adjusted, so that the UV lamps are adapted to the printing spray heads;
dynamically adjusting the distance between the UV lamp and the printing nozzle and the illumination intensity power of the UV lamp according to the curing requirement of the printing part;
the UV lamp and the printing nozzle are synchronously driven to synchronously print and solidify on a preset track.
Further, the specific steps of the dynamic adjustment are as follows:
superposing the solidification requirement of the printing part and the printing track on the three-dimensional model slice of the model main body in the same time axis;
setting coordinate points on a printing track of a printing spray head according to curing time required by different printing parts;
and determining the curing time of different printing parts according to coordinate points on the running track of the printing nozzle, and adjusting the distance between the UV lamp and the printing nozzle and the illumination intensity power of the UV lamp to ensure that the printing parts are cured within a set time.
Embodiments of the present invention have the following advantages:
(1) The appearance of the 3D printing model in the embodiment of the invention is similar to the outline of the uterine cavity, the rigid structure can better support the uterine cavity wall, the whole device is not required to be in contact with the uterine cavity, meanwhile, the opposite-side uterine cavity wall can be isolated to prevent the sticking rigid structure from being integrally attached to human tissues, the supporting strength is improved, phenomena such as breakage and the like are avoided, and the model is not adhered to the human tissues;
(2) According to the embodiment of the invention, the model is manufactured in a 3D printing mode, the size of the model can be changed only by modifying the model parameters of the 3D printing equipment, medical staff can correspondingly manufacture the model after acquiring the uterine cavity parameters of a patient only by operating the 3D printing equipment according to the requirements, different patients can be met in a targeted manner, and a more reasonable treatment tool is provided for the patients.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the ambit of the technical disclosure.
FIG. 1 is a schematic view of the overall structure of an embodiment of the present invention;
fig. 2 is a flowchart of a 3D printing model manufacturing method according to an embodiment of the present invention.
In the figure:
1-a central support column; 2-uterine cavity wall isolating heads; 3-an expansion cavity; 4-head cavity; 5-an air pressure balance hole; 6-fiber; 7-ribs; 8-a weight-reducing cavity; 9-sucking disc fixing head; 10-slip-resistant ring.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the invention discloses a 3D printing model for preventing uterine cavity adhesion, which comprises a uterine cavity wall isolation head 2 and a central support column 1 fixed at the axis of the uterine cavity wall isolation head 2, wherein the head of the central support column 1 is connected with the inner wall of the head of the uterine cavity wall isolation head 2, the central support column 1 and the uterine cavity wall isolation head 2 are both made of elastic and nontoxic medical silica gel or made of the same material similar to a contraceptive ring, the material has small rejection with a human body and is not adhered to the surface of the human body tissue, the inner contour and the outer contour of the uterine cavity wall isolation head 2 are both in an arc shape for starting outwards, the outer contour of the uterine cavity wall isolation head 2 is in transitional connection with the outer contour of the central support column 1 in an arc shape, a capacity expansion cavity 3 is arranged in the central support column 1, a head cavity 4 is arranged between the inner wall of the uterine cavity wall isolation head 2 and the outer wall of the central support column 1, the side wall of the central support column 1 is provided with an air pressure balance hole 5 which is communicated with the capacity cavity 3 and the head cavity 4, and the tail end of the central support column 1 is provided with tail wires 6.
In this embodiment, the shape of the print model is not particularly limited, but fig. 1 is only one example of the present invention, and the specific shape thereof may be adjusted according to the needs in practical application, for example, the shape thereof may be designed as a triangle so as to prop up the places where adhesion is likely to occur, such as the fallopian tubes on both sides and the cervical portion below.
In addition, the size of the printing model is not particularly limited, and the size of the printing model is not limited, but the proportion relation of each part is determined, namely the printing model can only be integrally enlarged or reduced, and when the size of a specific part needs to be changed, the printing model needs to be manually modified, so that the printing model is suitable for the uterine cavity sizes of different patients.
Specifically, the head of the 3D printing model capable of preventing the uterine cavity from sticking is forwards inserted into the uterine cavity of the uterus from the vagina, the tail end of the fiber 6 penetrates through the cervical orifice to be positioned in the vagina, the elastic and arched uterine cavity wall isolating head 2 is contracted inwards in the process of placing the 3D printing model into the uterine cavity, air in the head cavity 4 is extruded into the dilatation cavity 3 from the air pressure balance hole 5 so as to adapt to the contraction of the uterine cavity wall isolating head 2, after the 3D printing model is placed into the uterine cavity, the uterine cavity wall isolating head 2 is reset outwards and expanded under the action of the elasticity of the uterine cavity wall isolating head 2 and the air pressure in the central cavity 3, so that the outer contour of the 3D printing model is matched with the inner contour of the uterine cavity, the set contractible and expanded uterine cavity wall isolating head 2 is beneficial to the placement of the 3D printing model into the uterine cavity, discomfort of a patient is reduced, the 3D printing model is prevented from falling out after the 3D printing model is placed into the uterine cavity, and the whole fiber 6 is pulled out through pulling the fiber 6 when the 3D printing model is required to be taken out.
The 3D printing mold disclosed by the embodiment of the invention has the appearance similar to the inner outline of the uterine cavity, after the 3D printing mold is placed into the uterine cavity, the uterine cavity wall can be better supported through the rigid structure of the 3D printing mold, the whole device is not required to be contacted with the uterine cavity, meanwhile, the opposite-side uterine cavity wall can be isolated to prevent adhesion, the 3D printing mold is round in appearance, the body of a patient cannot be damaged when being placed into or taken out, the isolation effect on the adjacent uterine cavity wall is better, compared with the traditional soft structures such as a balloon, the three-dimensional printing mold has the rigid structure, the three-dimensional printing mold does not need to be integrally attached to human tissues, and the phenomena such as breakage and the like are avoided while the supporting strength is improved.
In the embodiment, the traditional intrauterine device is made of a material similar to that of a traditional intrauterine device, the drainage specificity of the intrauterine device is weak, the model cannot adhere to human tissues or be embedded into a human body, the 3D printing model of the embodiment of the invention is convenient for medical care personnel to operate, and more importantly, the intrauterine device adhesion preventing effect is good, and the injury and pain to a patient are greatly reduced.
In order to increase the structural strength of the central support column 1, the difficulty of increasing the placement of the 3D printing model due to the fact that the bending amplitude of the central support column 1 is large when the 3D printing model is placed in a uterine cavity is avoided, the X-shaped ribs 7 are arranged on the inner cavity wall of the capacity-expanding cavity 3, and the elastic ribs 7 increase the toughness of the 3D printing model and are small in size and light in weight.
In addition, the central cavity 3 and the side cavities 4 are arranged to be beneficial to reducing the overall weight of the 3D printing model, and in order to further reduce the overall weight of the 3D printing model and reduce the uncomfortable feeling of wearing of a patient, a plurality of weight-reducing cavities 8 are arranged in the central support column 1 and the uterine cavity wall isolating head 2, so that the dead weight of the model is reduced.
Further, the camber of the head end of the uterine cavity wall isolation head 2 is larger than that of the tail end, so that the 3D printing model can be prevented from being automatically separated from the uterine cavity, the contraction of the uterine cavity wall isolation head 2 is facilitated, and the 3D printing model is conveniently pulled out of the uterine cavity.
For being convenient for put into of 3D printing model, the tail end of center support column 1 is equipped with the fixed head 9 of sucking disc that can cooperate with the toper sucking disc, fiber 6 sets up on the fixed head 9 of sucking disc, through one end be equipped with the pull rod of the fixed toper sucking disc of sucking disc fixed head 9 cooperation, with 3D printing model fixed and jack-in uterine cavity.
Further, the length of the tail fiber 6 is 0.5 cm-2 cm, a plurality of anti-slip rings 10 are arranged on the tail fiber 6, and the arranged anti-slip rings 10 facilitate tool force to pull out the 3D printing model.
In this embodiment, in order to achieve the purposes of improving the strength of the whole supporting structure and reducing the weight, numerous accessories are arranged on the whole printing model, such as a connecting structure which is necessarily existed in the conventional production process, but the hidden trouble that the supporting structure is easily loosened and influenced exists in the connecting mode. In the present embodiment, the printing can be performed directly from one direction by using the 3D printing method and the integrated molding is performed, so that the hidden danger is not present, and the printing is performed essentially by using the slice data by using the 3D printing method, so that the shape and the size of the internal structure of the whole support structure can be well grasped, and the product meeting the design requirement can be produced.
Based on the foregoing print model, as shown in fig. 2, the present invention further includes a method for manufacturing a 3D print model, including the following steps:
step S100, selecting a curing plane, and coating photoresist for fixing the model main body on the curing plane;
step 200, extruding the liquid printing consumable material through a printing nozzle, gradually coating the liquid printing consumable material on a curing plane, and adjusting a UV lamp to directionally cure the liquid printing consumable material in the coating process;
and step S300, repeating the step S200 until the required 3D printing model is completed, and polishing the surface of the completed 3D printing model.
It is emphasized in the above steps that the process of 3D printing thereof is controlled by slice data.
Further, in the step S200, the method further includes printing the suspended portion, and the specific method for printing the suspended portion includes the following steps:
when the suspended part is printed, firstly, a water-soluble supporting structure is printed in the inner cavity, bonding points are attached to the water-soluble supporting structure, each bonding point is connected to form a secondary curing plane, photosensitive glue is coated on the secondary curing plane, a suspended part model main body is printed through liquid printing consumables on the coated photosensitive glue, a connector structure is constructed, the water-soluble supporting structure is used for supporting the uterine cavity wall isolating head 2 main body, and the cavities in the uterine cavity wall isolating head 2 and the central supporting column 1 are filled, so that the 3D printing model cannot collapse or fault when being printed, the water-soluble supporting structure in the cavity is dissolved and led out before the suspended part is printed and closed, the operation is simple and convenient, and the tail of the 3D printing model can be continued after the model main body is dried until the required 3D printing of the model is completed.
The method comprises the steps of superposing a curing requirement and a printing track of a printing part on a three-dimensional model slice of a model main body in the same time axis, setting coordinate points on the printing track of a printing spray head according to curing time required by different printing parts, synchronously driving a UV lamp and the printing spray head, synchronously printing and curing on a preset track, determining the curing time of different printing parts according to the coordinate points on the running track of the printing spray head, adjusting the speed of the printing spray head when the printing spray head reaches a designated coordinate point, ensuring that the printing of the model main body between two coordinate points is finished within the set time, and correspondingly, adapting to the requirement of the fixed time of the printing part by adjusting the distance between the UV lamp and the printing spray head and the illumination intensity power of the UV lamp, so that the printing part is cured within the set time.
The whole printing process is performed according to slice data, so that flexible adjustment can be performed in data generation, and a support model meeting design requirements and patient requirements can be printed.
In this embodiment, it should be further explained that, in the 3D printing process, the method of the present invention can combine the proficiency of the operator for the application of the system to determine how to print the 3D model, for example, the operator is very skilled for the application of the system, and on the basis of obtaining the whole reduced or amplified slice data of the 3D printing, the printing parameters can be modified with pertinence by a manual modification method actively, so that the printed model can be completely wedged into the uterine cavity of the patient, and when the operator is not proficient for the application of the system, the operator can directly print according to the slice data, and then perform post-processing by a manual modification method.
Because the 3D printing is adopted in the embodiment, the whole production process and the final structure are directly controlled by medical staff, so that the requirements of the medical staff can be met.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.

Claims (2)

1. The utility model provides a prevent palace chamber and glue glutinous 3D printing model which characterized in that, including palace chamber wall spacer head (2) and fix center support column (1) of palace chamber wall spacer head (2) axle center department, the head of center support column (1) is connected on the inner wall of palace chamber wall spacer head (2) head, be equipped with dilatation chamber (3) in center support column (1), be equipped with head cavity (4) between the inner wall of palace chamber wall spacer head (2) and the outer wall of center support column (1), be equipped with on the lateral wall of center support column (1) intercommunication dilatation chamber (3) and head cavity (4) atmospheric pressure balancing hole (5), the tail end of center support column (1) is equipped with tail fiber (6); a plurality of X-shaped ribs (7) are arranged on the inner cavity wall of the expansion cavity (3) along the length direction of the expansion cavity; a plurality of weight-reducing cavities (8) are arranged in the central support column (1) and the uterine cavity wall isolating head (2); the inner contour and the outer contour of the uterine cavity wall isolation head (2) are both in an arc shape arched outwards, the outer contour of the uterine cavity wall isolation head (2) is in transitional connection with the outer contour of the central support column (1) in an arc shape, and the arched radian of the head end of the uterine cavity wall isolation head (2) is larger than that of the tail end of the uterine cavity wall isolation head; the tail end of the central support column (1) is provided with a sucker fixing head (9) which can be matched with the conical sucker, and the tail fiber (6) is arranged at the tail end of the sucker fixing head (9);
both the central support column (1) and the uterine cavity wall isolation head (2) are made of elastic and nontoxic medical silica gel materials;
in the process that the 3D printing model is put into the uterine cavity, the uterine cavity wall isolating head (2) with elasticity and arching inwards contracts, air in the head cavity (4) is extruded into the dilatation cavity (3) through the air pressure balance hole (5) so as to adapt to the contraction of the uterine cavity wall isolating head (2), and after the 3D printing model is put into the uterine cavity, the uterine cavity wall isolating head (2) is reset outwards and expanded through the elasticity of the uterine cavity wall isolating head (2) and the action of air pressure in the central cavity (3).
2. The 3D printing model for preventing uterine cavity adhesion according to claim 1, wherein the length of the fiber (6) is 0.5 cm-2 cm, and a plurality of anti-slip rings (10) are arranged on the fiber (6).
CN201911164254.6A 2019-11-25 2019-11-25 3D printing model for preventing uterine cavity from sticking and manufacturing method Active CN110974521B (en)

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CN112939560A (en) * 2021-03-31 2021-06-11 王丽 Method for 3D printing of pessary

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