CN110974521A - 3D printing model for preventing uterine cavity from being sticky and manufacturing method - Google Patents

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

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Publication number
CN110974521A
CN110974521A CN201911164254.6A CN201911164254A CN110974521A CN 110974521 A CN110974521 A CN 110974521A CN 201911164254 A CN201911164254 A CN 201911164254A CN 110974521 A CN110974521 A CN 110974521A
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printing
head
uterine cavity
model
central support
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CN110974521B (en
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张小青
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Union Hospital Tongji Medical College Huazhong University of Science and Technology
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Union Hospital Tongji Medical College 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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  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (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 thereof, wherein the 3D printing model comprises a uterine cavity wall isolation head and a central support column fixed at the axis of the uterine cavity wall isolation head, the head of the central support column is connected with the head of the uterine cavity wall isolation head, an 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, an air pressure balance hole for communicating the expansion cavity and the head cavity is arranged on the side wall of the central support column, and a tail wire is arranged at the tail end of the central support column; the efficient 3D printing method is further included, the 3D printing model supports the uterine cavity wall, the opposite uterine cavity wall is isolated, adhesion is prevented, compared with a traditional contraceptive ring, damage to the body of a patient is reduced when the contraceptive ring is placed in or taken out, the isolation effect on the adjacent uterine cavity wall is better, the arranged tail fibers are convenient for the 3D printing model to be taken out, and the defects that the traditional linear tail fibers are easy to break and shrink into the uterine cavity are overcome.

Description

3D printing model for preventing uterine cavity from being sticky 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 adhesion and a manufacturing method thereof.
Background
Intrauterine adhesion (IUA), also known as Asheman syndrome, is the damage of the basement layer of the endometrium due to trauma of a pregnant or non-pregnant uterus, resulting in partial or total occlusion of the uterine cavity leading to abnormal menstruation, infertility or recurrent abortion, etc., which is essentially endometrial fibrosis. For patients with uterine cavity adhesion, the uterine cavity is frequently adhered repeatedly, 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 influenced.
In order to overcome the problems, in the prior art, adhesion of the uterine cavity is often prevented through obstruction of medical instruments, for example, in CN201621078598.7, a balloon device for preventing and treating adhesion of the uterine cavity in the prior art is attached to the inner membrane of the uterine cavity through a balloon device for injecting water, so as to prevent adhesion and ascending infection. However, the following defects still exist in the prior art:
(1) present sacculus structure generally is the material of class such as PVC, and mostly is the software structure, puts into and takes out the human body and all has the hidden danger of damaged pressure release at the in-process that uses, when human inside pressurizes and supports, whole sacculus structure all will be attached on the human tissue mucous membrane, and long-time large tracts of land contact makes sacculus and human tissue take place to bond easily and be difficult to take off, adopts similar PVC's material to take place to arrange the abnormal function with the human body easily moreover.
(2) The existing balloon structure is generally produced in batch in a fixed size, but in actual situations, the size of a uterine cavity of a human body is different, and if the matched balloon can be manufactured in real time according to the size of the uterine cavity, the optimal scheme is provided, but the existing preparation mode cannot meet the requirement. .
Disclosure of Invention
Therefore, the embodiment of the invention provides a 3D printing model for preventing uterine cavity adhesion, and aims to solve the problems that in the prior art, the uterine cavity is easy to adhere repeatedly, and a balloon cannot meet the uterine cavity sizes of different patients.
In order to achieve the above object, the embodiment of the present invention discloses the following technical solutions:
the utility model provides a prevent that palace chamber glues glutinous 3D and prints model, includes palace chamber wall isolation head and fixes the central support column of palace chamber wall isolation head axle center department, the head of central support column meets with the head that palace chamber wall isolation head, be equipped with in the central support column and expand the appearance chamber, palace chamber wall isolation head the inner wall with be equipped with the head cavity between the outer wall of central support column, be equipped with the intercommunication on the lateral wall of central support column expand the atmospheric pressure balancing hole that holds chamber and head cavity, the tail end of central support column is equipped with the tail silk.
Furthermore, a plurality of X-shaped ribs are arranged on the wall of the inner cavity of the expansion cavity along the length direction of the inner cavity.
Furthermore, a plurality of weight reduction cavities are arranged in the central support column and the uterine cavity wall isolation head.
Furthermore, the inner contour and the outer contour of the uterine cavity wall isolating head are both in an outward arc shape, the outer contour of the uterine cavity wall isolating head is in transition connection with the outer contour of the central support column through an arc surface, and the arc degree 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.
Furthermore, 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.
Furthermore, the length of the tail fiber is 0.5-2 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:
s100, selecting a curing plane, and coating photosensitive glue for fixing a model main body on the curing plane;
s200, extruding the liquid printing supplies out through a printing nozzle, gradually coating the liquid printing supplies on a curing plane, adjusting a UV lamp to directionally cure the liquid printing supplies in the coating process, and constraining the 3D printing process by slice data;
and S300, repeating the step S200 until the required 3D printing model is finished, and polishing the smooth surface of the finished 3D printing model.
Further, step S200 further includes a suspended portion printing, and the specific method of the suspended portion printing includes:
when the suspended part is printed, firstly, a water-soluble supporting structure is printed in the inner cavity;
adhering bonding points to the water-soluble supporting structure, connecting the bonding points to form a secondary curing plane, and coating photosensitive glue on the secondary curing plane;
printing a suspended part model main body on the coated photosensitive adhesive through a liquid printing consumable material, and constructing a connector structure;
and dissolving and guiding out the water-soluble supporting structure in the cavity before the suspended part is printed and closed, and continuing to print the tail part of the model in a 3D mode after the model main body is dried until the required 3D printing of the model is completed.
Further, in step S200, the specific steps of directional curing are as follows:
selecting the number of UV lamps and adjusting the incident angle of the UV lamps to enable the UV lamps to adapt to the printing spray head;
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;
and synchronously driving the UV lamp and the printing nozzle to synchronously print and cure on a preset track.
Further, the specific steps of the dynamic adjustment are as follows:
on the three-dimensional model slice of the model main body, superposing the curing requirement of the printing part and the printing track by the same time axis;
setting coordinate points on a printing track of the printing nozzle according to curing time required by different printing parts;
and determining the curing time of different printing parts according to the 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 enable the printing parts to finish curing within the set time.
The embodiment of the invention has the following advantages:
(1) the appearance of the 3D printing model is similar to the outline of the uterine cavity, the rigid structure of the 3D printing model can better support the wall of the uterine cavity without the need of the whole device to be contacted with the uterine cavity, meanwhile, the opposite uterine cavity wall can be isolated to prevent the sticking rigid structure from being integrally stuck on human tissues, the supporting strength is improved, the phenomena of breakage and the like do not exist, and the model cannot be stuck with 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, and medical workers can correspondingly manufacture the model after obtaining the uterine cavity parameters of the patient only by operating the 3D printing equipment as required, so that different patients can be pertinently met, and a more reasonable treatment tool is provided for the patient.
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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
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 creation method according to an embodiment of the present invention.
In the figure:
1-a central support column; 2-uterine cavity wall isolation head; 3-expanding the cavity; 4-head cavity; 5-air pressure balancing holes; 6-fiber; 7-ribs; 8-weight loss cavity; 9-a sucker fixing head; 10-slip-prevention ring.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the invention discloses a 3D printing model for preventing uterine cavity adhesion, which comprises a uterine cavity wall isolating head 2 and a central support column 1 fixed at the axis of the uterine cavity wall isolating 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 isolating head 2, the central support column 1 and the uterine cavity wall isolating head 2 are both made of elastic and nontoxic medical silica gel or the same material similar to a contraceptive ring, the material has small rejection with a human body and can not be adhered to the surface of a tissue of the human body, the inner contour and the outer contour of the uterine cavity wall isolating head 2 are both in an outward arc shape, the outer contour of the uterine cavity wall isolating head 2 is in arc surface transition connection with the outer contour of the central support column 1, an 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 isolating 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 for communicating the expansion cavity 3 with the head cavity 4, and the tail end of the central support column 1 is provided with a tail fiber 6.
In this embodiment, the shape of the printing model is not limited specifically, and fig. 1 is only one case of the embodiment of the present invention, and the specific shape can be adjusted according to the requirement in practical application, for example, the shape can be designed to be triangular, so as to prop up the parts which are easy to be sticky, such as two fallopian tubes and the lower cervix.
In addition, the size of the printing model is not specifically limited, and it should be noted that, although the size of the printing model is not limited, the proportional relationship of each part is determined, that is, the printing model can only be enlarged or reduced integrally, and when the size of a specific part needs to be changed, manual modification is needed, so as to adapt to the uterine cavity sizes of different patients.
Specifically, the head of the 3D printing model for preventing the uterine cavity from being sticky is pushed forwards and is plugged into the uterine cavity of the uterus by the vagina, the tail end of the tail wire 6 passes through the cervical orifice and is positioned in the vagina, the elastic and arched uterine cavity wall isolation head 2 contracts inwards in the process of placing the 3D printing model into the uterine cavity, air in the head cavity 4 is squeezed into the expansion cavity 3 through the air pressure balance hole 5 to adapt to the contraction of the uterine cavity wall isolation head 2, after the 3D printing model is placed into the uterine cavity, the uterine cavity wall isolation head 2 resets and expands outwards under the action of the elasticity of the uterine cavity wall isolation 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 3D printing model is favorably placed into the uterine cavity through the arranged contractible and expandable uterine cavity wall isolation head 2, discomfort of a patient is reduced, and the 3D printing model is prevented from falling out after being placed into the uterine cavity, and when the 3D printing model needs to be taken out, the tail wire 6 only needs to be clamped through a tool, and the 3D printing model is integrally pulled out by pulling the tail wire 6.
The appearance of the 3D printing model die disclosed by the embodiment of the invention is similar to the inner contour of the uterine cavity, after the 3D printing model die is placed in the uterine cavity, the wall of the uterine cavity can be better supported through the rigid structure of the die, the whole device is not required to be contacted with the uterine cavity, meanwhile, the opposite wall of the uterine cavity can be isolated to prevent adhesion, the appearance of the 3D printing model is round and smooth, the 3D printing model die cannot damage the body of a patient when being placed in or taken out, the isolation effect on the adjacent wall of the uterine cavity is better, compared with the traditional soft structures such as a balloon, the rigid structure is adopted, the die is not required to be integrally attached to the tissue of the human body, and the phenomena of damage and the like do not exist.
The 3D printing model of the embodiment of the invention not only facilitates the operation of medical personnel, but also has good effect of preventing uterine cavity from being sticky, and greatly reduces the injury and pain to patients.
In order to increase the structural strength of the central support column 1 and avoid the problem that the bending amplitude of the central support column 1 is large and the placing difficulty is increased when the 3D printing model is placed in the uterine cavity, a plurality of ribs 7 in an X shape are arranged on the wall of the inner cavity of the expansion cavity 3, and the elastic ribs 7 increase the toughness of the 3D printing model, and have small volume and light weight.
In addition, the central cavity 3 and the side cavities 4 are favorable for 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 a patient, a plurality of weight reducing cavities 8 are arranged in the central support column 1 and the uterine cavity wall isolation head 2, so that the self weight of the model is reduced.
Furthermore, the arching radian of the head end of the uterine cavity wall isolation head 2 is greater than that of the tail end, so that the 3D printing model can be prevented from being separated from the uterine cavity, the contraction of the uterine cavity wall isolation head 2 is facilitated, and the 3D printing model can be pulled out from the uterine cavity conveniently.
In order to put into the 3D printing model conveniently, the tail end of the central support column 1 is provided with a sucker fixing head 9 matched with a conical sucker, the tail wire 6 is arranged on the sucker fixing head 9, a pull rod matched with the conical sucker and fixed with the sucker fixing head 9 is arranged at one end of the pull rod, and the 3D printing model is fixed and pushed into the uterine cavity.
Furthermore, the length of the tail filament 6 is 0.5-2 cm, a plurality of anti-slip rings 10 are arranged on the tail filament 6, and the anti-slip rings 10 are convenient for the tool to exert force to pull out the 3D printing model.
In the embodiment, in order to achieve the purposes of improving the strength of the whole supporting structure, reducing the weight and the like, a plurality of accessories are arranged on the whole printing model, and if the traditional production process is adopted, structures such as connection and the like inevitably exist, but the connection mode has the hidden danger that the supporting structure is easily loosened and influenced. And in this embodiment, the mode of 3D printing can be directly printed from one direction and integrated into one piece, and there is no connecting structure, so there is no hidden trouble, and because of the 3D printing, it is essentially printed through slice data, and the shape and size of the internal structure of the whole supporting structure can be well grasped, so that the product meeting the design requirements can be produced.
Based on the printing model, as shown in fig. 2, the invention further includes a method for manufacturing a 3D printing model, including the following steps:
s100, selecting a curing plane, and coating photosensitive glue for fixing a model main body on the curing plane;
s200, extruding the liquid printing supplies out through a printing nozzle, gradually coating the liquid printing supplies on a curing plane, and adjusting a UV lamp to directionally cure the liquid printing supplies in the coating process;
and S300, repeating the step S200 until the required 3D printing model is finished, and polishing the smooth surface of the finished 3D printing model.
It is emphasized at the above steps that the process of 3D printing is controlled by the slice data.
Further, step S200 further includes a suspended portion printing, and the specific method of the suspended portion printing includes:
when the hanging 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, the bonding points are connected to form a secondary curing plane, photosensitive glue is coated on the secondary curing plane, a hanging part model main body is printed on the coated photosensitive glue through liquid printing consumables, a connector structure is constructed, the water-soluble supporting structure is used for supporting the uterine cavity wall isolation head 2 main body and filling the cavities in the uterine cavity wall isolation head 2 and the central support column 1, so that the 3D printing model cannot collapse or break when being printed, the water-soluble supporting structure in the cavity is dissolved and led out before the hanging part is printed and closed, the operation is simple and convenient, the tail part of the 3D printing model can be continuously printed after the model main body is dried until the required 3D printing of the model is completed.
On a three-dimensional model slice of a model main body, the curing requirement and the printing track of a printing part are superposed by the same time axis, coordinate points are set on the printing track of a printing nozzle according to the curing time required by different printing parts, a UV lamp and the printing nozzle are synchronously driven, the printing and curing are synchronously carried out on a preset track, the curing time of different printing parts is determined according to the coordinate points on the running track of the printing nozzle, when the printing nozzle reaches a specified coordinate point, the speed of the printing nozzle is adjusted to ensure that the model main body printing between two coordinate points is completed within the set time, correspondingly, the distance between the UV lamp and the printing nozzle and the illumination intensity power of the UV lamp are adjusted to adapt to the requirement of the fixed time of the printing part, so that the printing part is cured within the set time, and the printing nozzle and the UV lamp can be different according to the printing parts, the moving speed and the fixed speed are reasonably adjusted, so that unnecessary time and energy waste are avoided while the printing quality is ensured.
The whole printing process is completely performed according to the slice data, so that flexible adjustment can be performed in the generation of the data, and the support model meeting the design requirements and the requirements of patients can be printed.
It should be further described in this embodiment that, in the 3D printing process, how to print the 3D model may be determined by combining the proficiency level of the operator on the application of the system, for example, the operator is very skilled on the application of the system, and on the basis of obtaining the whole reduced or enlarged slicing data of the 3D printing, the printing parameters may be modified in a targeted manner by a manual modification method, so that the printed model can be completely fitted in the uterine cavity of the patient.
Because adopt the fool preparation technology of 3D printing this kind in this embodiment to make whole production process and final structure all receive medical personnel's direct control, thereby can laminate medical personnel's demand more.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (10)

1. The utility model provides a prevent that palace chamber glues sticky 3D and prints model, its characterized in that, keep apart head (2) and fix including palace chamber wall central support post (1) of palace chamber wall isolation head (2) axle center department, the head of central support post (1) is connected on the inner wall of palace chamber wall isolation head (2) head, be equipped with in central support post (1) and expand appearance chamber (3), the inner wall of palace chamber wall isolation head (2) with be equipped with head cavity (4) between the outer wall of central support post (1), be equipped with the intercommunication on the lateral wall of central support post (1) expand atmospheric pressure balancing hole (5) of appearance chamber (3) and head cavity (4), the tail end of central support post (1) is equipped with tail silk (6).
2. The 3D printing model for preventing the uterine cavity from being sticky is characterized in that 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.
3. The 3D printing model for preventing the adhesion of the uterine cavity as defined in claim 1, wherein a plurality of weight-reducing cavities (8) are respectively arranged in the central supporting column (1) and the uterine cavity wall isolating head (2).
4. The 3D printing model for preventing the adhesion of the uterine cavity according to claim 1, wherein the inner contour and the outer contour of the uterine cavity wall isolation head (2) are both in an outward arc shape, the outer contour of the uterine cavity wall isolation head (2) is in arc transition connection with the outer contour of the central support column (1), and the arch radian of the head end of the uterine cavity wall isolation head (2) is greater than that of the tail end of the uterine cavity wall isolation head.
5. The 3D printing model for preventing the uterine cavity from being sticky is characterized in that a sucker fixing head (9) matched with a conical sucker is arranged at the tail end of the central supporting column (1), and the tail wire (6) is arranged at the tail end of the sucker fixing head (9).
6. The 3D printing model for preventing the uterine cavity from being sticky is characterized in that the length of the tail fiber (6) is 0.5-2 cm, and a plurality of anti-slip rings (10) are arranged on the tail fiber (6).
7. A manufacturing method of a 3D printing model is characterized by comprising the following steps:
s100, selecting a curing plane, and coating photosensitive glue for fixing a model main body on the curing plane;
s200, extruding the liquid printing supplies out through a printing nozzle, gradually coating the liquid printing supplies on a curing plane, adjusting a UV lamp to directionally cure the liquid printing supplies in the coating process, and constraining the 3D printing process by slice data;
and S300, repeating the step S200 until the required 3D printing model is finished, and polishing the smooth surface of the finished 3D printing model.
8. The method for manufacturing the 3D printing model according to claim 7, wherein the step S200 further includes a hanging portion printing, and the specific method steps of the hanging portion printing are as follows:
when the suspended part is printed, firstly, a water-soluble supporting structure is printed in the inner cavity;
adhering bonding points to the water-soluble supporting structure, connecting the bonding points to form a secondary curing plane, and coating photosensitive glue on the secondary curing plane;
printing a suspended part model main body on the coated photosensitive adhesive through a liquid printing consumable material, and constructing a connector structure;
and dissolving and guiding out the water-soluble supporting structure in the cavity before the suspended part is printed and closed, and continuing to print the tail part of the model in the 3D mode after the model main body is dried until the required 3D printing model is completed.
9. The method for making the 3D printing model according to claim 7, wherein in the step S200, the specific steps of directional solidification are as follows:
selecting the number of UV lamps and adjusting the incident angle of the UV lamps to enable the UV lamps to adapt to the printing spray head;
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;
and synchronously driving the UV lamp and the printing nozzle to synchronously print and cure on a preset track.
10. The method for making a 3D printing model according to claim 9, wherein the dynamic adjustment comprises the following specific steps:
on the three-dimensional model slice of the model main body, superposing the curing requirement of the printing part and the printing track by the same time axis;
setting coordinate points on a printing track of the printing nozzle according to curing time required by different printing parts;
and determining the curing time of different printing parts according to the 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 enable the printing parts to finish curing within the set time.
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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