CN209289601U - A kind of half a month board mold - Google Patents
A kind of half a month board mold Download PDFInfo
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- CN209289601U CN209289601U CN201822140298.2U CN201822140298U CN209289601U CN 209289601 U CN209289601 U CN 209289601U CN 201822140298 U CN201822140298 U CN 201822140298U CN 209289601 U CN209289601 U CN 209289601U
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Abstract
The utility model relates to a kind of half a month board molds, comprising: upper die and lower die and the mold clamp for fixing the upper die and lower die；The upper die and lower die are respectively provided with model cavity and drag chamber, and the cavity shape after molding is matched with meniscus threedimensional model；The upper die and lower die are provided with the cylindricality die joint extended transversely, and the upper mold is provided with shelves groove at cylindricality die joint both ends, and the lower die is provided with the block with shelves groove cooperation at cylindricality die joint both ends, for limiting the longitudinal movement of mold；The lower die is vertically arranged with sprue and discharge port with drag chamber perforation.The utility model is using lateral cylindricality parting Surface Design scheme, the form of meniscus can not only be preferably bonded, meniscus is set to be evenly distributed in the intracavitary volume of the type of upper and lower mould, it is more advantageous to the flowing of liquid gel, molding effect is more preferable, while cylindricality die joint can enable upper and lower mould more easily cooperate, difficult to slide mold be caused to misplace.
Description
Technical field
The utility model relates to the field of medical instrument technology more particularly to a kind of half a month board molds.
Background technique
Meniscus is located in knee joint, between condyle of femur and tibial plateau, is kneed important component, has and passes
Leading critical functions, the presence of meniscus such as load, absorption concussion, proprioception, lubrication and nutrition joint facilitates kneed
Contact area, the intercartilaginous contact stress of reduction between stability and harmony, increase shin bone and femur.Meniscus tear conduct
One of most common injury gained in sports, the meniscus of report in 1948 cut art entirely and were once generally considered treatment Athletic Injuries In The Knee
The only effective modus operandi；Nineteen eighty-two, partial meniscectomy are considered as the alternative that meniscus is cut entirely；However, half
It will lead to that the contact area between shin bone and femur is reduced, contact pressure increases after month plate resection, some researches show that receive half a month
The risk that osteoarthritis occurs in the future for the patient that plate cuts operation entirely will increase 2-7 times；Meanwhile it being retained after partial meniscectomy
Load suffered by partial meniscus increases, force modes change, and will accelerate the regression and osteoarthritis that retain part meniscus
Generation；Currently, the tissue integrity for retaining meniscus as far as possible becomes the main trend of half a month injury in treating.However, adult half
The moon, plate only had vascular distribution around it within the scope of 10-25%, and non-vascular area and serious meniscus injury are generally difficult to repair.
Although Allogenic Meniscus Transplantation for Meniscus object can substitute the meniscus of missing, donor source is very limited, faces far from satisfaction
Bed needs.The more organizational project meniscus of Recent study, meniscus prosthetic are likely to become the graft of future ideality.
Meniscus synovial membrane edge is high, free edge is low, and wedge-shaped in cross-section is an irregular institutional framework；It is different plant species, same
The different sexes of one species, the age and it is not agnate between, size, form and the geometry of meniscus all can differences
And variation.Currently, modularization and standardized design scheme is mostly used to produce standardized meniscus prosthetic in clinical and scientific research
Or organizational project Meniscus scaffold, however this kind of scheme is only suitable for producing standardized meniscus prosthetic or organizational project in enormous quantities
Bracket, and the personalized difference of different patient's meniscus of knee joint cannot be embodied.Due to every patient or different experiments animal
Between knee joint size and form be all it is different, this standardized meniscus prosthetic or bracket are easy to patient's
Knee joint mismatches, so as to cause in art, a series of problem such as postoperative or reliable experiment result degree.
The matching of meniscus prosthetic or organizational project Meniscus scaffold and knee joint morphology is to influence postoperative effect, tissue again
An important factor for raw and embodiment scientific research preciseness.As the extensive development of organizational project meniscus correlative study and meniscus are false
The problem of clinical application of body, whether knee joint morphology matches with organizational project Meniscus scaffold or meniscus prosthetic gradually at
For everybody focus.For clinical application, the mismatch of meniscus prosthetic and shin bone or distal femoral surface be easy to cause prosthese
Excessive covering or covering it is incomplete, the dynamics of Patellar joint, shin femoral joint and meniscus prosthetic is abnormal, is easy to cause prosthese
Quick abrasion, service life is short and the clinical symptoms such as postoperative gonalgia, the possibility for increasing operative failure and overhauling；And for
For scientific research, the mismatch of organizational project Meniscus scaffold and shin bone, distal femoral surface is easy to cause Meniscus scaffold stress different
Often, it collapses too early, is unfavorable for tissue and grows into and regenerate, cannot reflect the truth of regeneration, scientific research preciseness and can
Repeatability may be queried, while also be unfavorable for the clinical conversion in later period.Using personalized design and customize manufacturer
Case can produce the meniscus prosthetic or bracket exactly matched with patient/experimental animal knee joint, postoperative more comfortable, long-term
Effect is more excellent, and experimental result is more reliable.
The rise of 3D printing manufacturing technology is quickly changing our traditional mode of production and life style in recent years, however right
In common organizational project raw material of the hydrogel one kind containing large quantity of moisture, Meniscus scaffold directly is prepared using 3D printing technique
Technical difficulty is higher, relevant parameter and index are more difficult to control, be unfavorable for rapid shaping, bracket mechanical strength produced not
It is enough, it is easy to collapse.It is molded with a mold if adopted, generallys use parallel plane between the upper and lower mould of mold in the prior art
Design scheme, the fitting and liquid hydrogel for being unfavorable for meniscus form using this kind of the design scheme flowing intracavitary in type, on
Lower die is easy sliding and causes to misplace, and the die-closed position of mold is not accurate enough, stablizes.
Utility model content
The technical problems to be solved in the utility model is, at least part defect in the prior art, to provide one
Kind half a month board mold.
In order to solve the above-mentioned technical problem, the utility model provides a kind of half a month board mold, comprising: upper die and lower die and
For fixing the mold clamp of the upper die and lower die；
The upper die and lower die are respectively provided with model cavity and drag chamber, and cavity shape and meniscus three after molding
Dimension module matching；
The upper die and lower die are provided with the cylindricality die joint extended transversely, and the upper mold is at cylindricality die joint both ends
It is provided with shelves groove, the lower die is provided with the block with shelves groove cooperation at cylindricality die joint both ends, for limiting mold
Longitudinal movement；
The lower die is vertically arranged with sprue and discharge port with drag chamber perforation.
According in half a month board mold described in the utility model, it is preferable that the type chamber after the upper die and lower die molding
Long axis is vertical with the long axis direction of the cylindricality die joint.
According in half a month board mold described in the utility model, it is preferable that the body of the upper model cavity and drag chamber
Product is equal.
According in half a month board mold described in the utility model, it is preferable that the diameter of the sprue goes out greater than described in
Material mouth.
According in half a month board mold described in the utility model, it is preferable that the quadrangle of the upper die and lower die is provided with
Location hole, and locked by the mold clamp.
According in half a month board mold described in the utility model, it is preferable that the half a month board mold is transparent material system
At.
According in half a month board mold described in the utility model, it is preferable that the transparent material be transparent photosensitive resin,
Acrylic, PC material or glass powder.
The half a month board mold for implementing the utility model, has the following beneficial effects:
(1) die joint of upper die and lower die uses lateral cylindricality parting Surface Design in the half a month board mold of the utility model
Scheme, parallel planar design mode is generallyd use compared to upper and lower mould, and the program can not only preferably be bonded meniscus
Form makes meniscus be evenly distributed in the intracavitary volume of the type of upper and lower mould, is more advantageous to the flowing of liquid gel, molding effect is more
It is good, while cylindricality die joint can enable upper and lower mould more easily cooperate, difficult to slide mold be caused to misplace；
(2) the half a month board mold of the utility model is formed using transparent material, compared to engineering plastics and metal material
Material, the mold is transparent, allows ultraviolet light, infrared ray and visible light to pass through, to solve being molded into for light-operated cross-linked hydrogel
Type problem；
(3) shelves groove and block are devised at die joint both ends in the half a month board mold of the utility model, for limiting mold
Longitudinal movement, cylindrical type die joint and shelves groove structure limit the relative movement of upper/lower die in the horizontal plane jointly, make mould
The die-closed position of tool is accurate, stablizes；
(4) sprue diameter is greater than discharge port in the half a month board mold of the utility model, injects convenient for photosensitive hydrogel
The intracavitary portion of type, while in the intracavitary generation certain pressure of type, make photosensitive hydrogel full of entire type chamber, to solve hydrogel point
Cloth is uneven, there is the problems such as bubble etc. may influence meniscus prosthetic or bracket mechanical property in part.
Detailed description of the invention
Fig. 1 is the first angle view according to the half a month board mold of the preferred embodiment in the utility model；
Fig. 2 is the second angle view according to the half a month board mold of the preferred embodiment in the utility model.
Fig. 3 is the meniscus mould making method flow chart according to the utility model preferred embodiment；
Fig. 4 is the meniscus threedimensional model schematic diagram obtained according to the utility model three-dimensional reconstruction.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
Fig. 1 and 2 is please referred to, respectively according to the first angle view of the half a month board mold of the preferred embodiment in the utility model
With second angle view.As shown, the half a month board mold includes: upper mold 1, lower die 2 and for fixing upper mold 1 and lower die 2
Mold clamp.
Wherein, after upper mold 1 and lower die 2 are respectively provided with model cavity 11 and drag chamber 21, and upper mold 1 and lower die 2 mold
Cavity shape matched with meniscus threedimensional model.The meniscus threedimensional model can be standardized human body or the knee of animal
Articular meniscus meniscus articularis threedimensional model, the meniscus of knee joint threedimensional model of human body or animal that either personalization acquires.
Upper mold 1 and lower die 2 are provided with the cylindricality die joint extended transversely.As upper mold 1 has the first cylindricality point of protrusion
Type face 12, lower die 2 have the second recessed cylindricality die joint 12, and the two is fitted close.And as shown, it is preferred that cylindricality
The long axis of die joint and the long axis of meniscus are perpendicular, that is to say, that the type chamber long axis after molding extends longitudinally, and cylindricality point
The long axis in type face extends transversely.
The upper mold 1 of the utility model and the die joint of lower die 2 are cylindroid, more preferably cylindrical surface.
Although interior thickness as outside differs meniscus, but bottom edge is substantially smooth, therefore when designing the type chamber of mold, can be three
First meniscus threedimensional model is laid flat in dimension design software, then according to the natural radian of meniscus determine one it is proper
Cylindricality die joint, preferably that meniscus is so uniform that be divided into two parts up and down, i.e., the setting of cylindricality die joint is so that upper model cavity 11
It is equal with the volume of drag chamber 21.It, can be with maximum journey when model cavity 11 is consistent with the volume of drag chamber 21 on meniscus
Just molding meniscus takes out in degree place.
Parallel planar design scheme is generallyd use between the upper and lower mould of mold in the prior art, uses this kind of design side
Case is unfavorable for the fitting of meniscus form and the flowing that liquid hydrogel is intracavitary in type, and upper and lower mould is easy sliding and causes to misplace, mould
The die-closed position of tool is not accurate enough, stablizes.The cylindricality parting Surface Design of the utility model can not only preferably be bonded meniscus
Form, so that meniscus is evenly distributed in the intracavitary volume of the type of upper and lower mould, be more advantageous to the flowing of liquid gel, molding effect is more
It is good, while cylindrical surface can enable upper and lower mould more easily cooperate, difficult to slide mold be caused to misplace.
Preferably, upper mold 1 is provided with shelves groove 13 at cylindricality die joint both ends, and lower die 2 is provided at cylindricality die joint both ends
The block 24 cooperated with shelves groove 13, for limiting the longitudinal movement of mold.And column type die joint and shelves groove structure limit jointly
The relative movement of upper/lower die in the horizontal plane, makes that the die-closed position of mold is accurate, stablizes.
Lower die 2 is vertically arranged with the sprue 25 and discharge port 26 penetrated through with drag chamber 21, it is preferable that sprue 25
Diameter be greater than discharge port 26, be convenient for the intracavitary portion of photosensitive hydrogel injection type, while in the intracavitary generation certain pressure of type, make light
Quick property hydrogel is full of entire type chamber.
The upper mold 1 of the utility model and the quadrangle of lower die 2 are provided with location hole 4, and are locked by mold clamp, such as logical
Locking is realized in the cooperation for crossing screw 31 and nut 32.After molding, the confinement mode using screw or bolt makes the utility model
Upper/lower die is preferably compacted, and photosensitive hydrogel is prevented to be spilled over to except type chamber after injection type chamber.
Preferably, half a month board mold of the invention is made of transparent material.The transparent material is including but not limited to saturating
Bright photosensitive resin, acrylic, PC material and glass powder etc..Mostly use opaque metal material or engineering plastic on the market at present
Expect processing mold, the mold prepared using the above material is opaque, does not allow ultraviolet light to pass through, this is unfavorable for light-operated crosslinking water
The mold casting forming of gel, application range are relatively narrow.Therefore, the utility model is by the design of transparent mould, allows ultraviolet light, infrared
Or visible light passes through, to solve the problems, such as the mold casting forming of light-operated cross-linked hydrogel.
Referring to Fig. 3, for according to the preparation method flow chart of the half a month board mold of the utility model preferred embodiment.Such as figure
Shown in 3, the preparation method of the half a month board mold the following steps are included:
S1, the knee joint image data for obtaining individual.
The individual can refer to the mankind or animal.The mode that the knee joint image data of individual is obtained in the step includes meter
Calculation machine tomoscan (CT), magnetic resonance (MRI) and X-ray etc..It is preferred that knee joint is scanned using high-resolution magnetic resonance (MRI),
Obtain the knee joint image data containing meniscus position.Such as New Zealand's male White Rabbit of 6 monthly age skeletal maturations is taken, it is conventional
Anesthesia, rabbit knee is fixed in magnetic resonance coil, and kneecap presses 3D-FLASH to probe, using 9.4T high-resolution magnetic resonance
Imaging scanning sequence is detected, and sweep parameter is as shown in table 1 below:
S2, the knee joint image data of acquisition is imported in medicine reverse software, processing obtains meniscus threedimensional model.
The medicine reverse software used in the step can be Mimics software or other same type softwares.Preferably,
The step includes:
S2-1, the image for obtaining magnetic resonance imaging import Mimics software, call " editor covers cover " (Edit Masks),
" paintbrush " (Draw) function is selected, sketches the contours of the appearance profile of each level meniscus, and pass through sagittal plain, Coronal and level
Three orientation in position are modified its appearance profile；
S2-2, " masking-out " (Mask) that meniscus is established using " region growth " (Region growing) function are used
" three-dimensional reconstruction " (Calculate 3D) function of software creates meniscus threedimensional model, exports STL formatted file.The step
Middle selection " region growth " (Region growing) button is clicked any point on meniscus, then can be being put with this
The continuous surface of center diffusion is all chosen, and the bone tissue that part not continuous in this way is not connect with meniscus for example is just excluded
It outside, is subsequent three-dimensional reconstruction exclusive PCR." three-dimensional reconstruction " (Calculate 3D) button is selected, it is strong by mimics software
The big meniscus threedimensional model for calculating Reconstruction of The Function output STL format.Referring to Fig. 4, for according to the utility model Three-dimensional Gravity
The meniscus threedimensional model schematic diagram built.
S3, the meniscus threedimensional model for obtaining rapid S2 import in reverse engineering software, at model tri patch optimization
Reason, and progress overmolded operation in design software is imported, make mold former.
Step S3 specifically includes the following steps:
S3-1, STL formatted file derived from mimics software is imported in Geomagic Studio reverse engineer software；
S3-2, the case-deleted models surface spike in Geomagic Studio software, then to model local triangle dough sheet
It is handled, deletes protrusion and groove structure wrong in pointed structures and reconstruction process；
After the completion of S3-3, surface texture processing, model meshes structure is repainted, coarse tri patch is refined；
S3-4, relaxation polygon, advanced optimize model surface quality；
S3-5, pass through precise curved surface function, be accurate parametric surface by meniscus model conversion, and export IGS lattice
Formula file；
S3-6, the file for the IGS format handled well is imported into UG_NX Three-dimensional Design Software (Siemens's product life cycle
Management software company-Siemens PLM Software) in, overmolded operation is carried out, mold former is made.
S4, mold former is exported, 3D printing is carried out using transparent material, obtains the transparent half a month board mold of entity.It should
Transparent material includes but is not limited to transparent photosensitive resin, acrylic, PC material and glass powder etc..
The application method of the half a month board mold of the utility model is as follows: photosensitive hydrogel is poured into the meniscus processed
In mold, by ultraviolet light, infrared or radiation of visible light curing molding, personalized meniscus is obtained.The utility model is used
Photosensitive hydrogel include photosensitive hydrogel or the hydrogel added with photosensitizer.The meniscus template of the utility model uses
Transparent photosensitive resin material is formed, and with photosensitive resin material 3D printing rapid shaping, mold has high-intensitive, resistance to height
The features such as temperature, waterproof, dimensional accuracy can achieve 0.1mm；Compared to engineering plastics and metal material, the mold is transparent, allows
Ultraviolet light, infrared ray or visible light pass through, to solve the problems, such as the mold casting forming of light-operated cross-linked hydrogel.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (7)
1. a kind of half a month board mold characterized by comprising upper die and lower die and the mold for fixing the upper die and lower die
Fastener；
The upper die and lower die are respectively provided with model cavity and drag chamber, and cavity shape and meniscus three-dimensional mould after molding
Type matching；
The upper die and lower die are provided with the cylindricality die joint extended transversely, and the upper mold is arranged at cylindricality die joint both ends
There is shelves groove, the lower die is provided with the block with shelves groove cooperation at cylindricality die joint both ends, for limiting the longitudinal direction of mold
It is mobile；
The lower die is vertically arranged with sprue and discharge port with drag chamber perforation.
2. half a month board mold according to claim 1, which is characterized in that the type chamber long axis after the upper die and lower die molding
It is vertical with the long axis direction of the cylindricality die joint.
3. half a month board mold according to claim 1 or 2, which is characterized in that the body of the upper model cavity and drag chamber
Product is equal.
4. half a month board mold according to claim 1 or 2, which is characterized in that the diameter of the sprue goes out greater than described in
Material mouth.
5. half a month board mold according to claim 1 or 2, which is characterized in that the quadrangle of the upper die and lower die is provided with
Location hole, and locked by the mold clamp.
6. half a month board mold according to claim 1 or 2, which is characterized in that the half a month board mold is transparent material system
At.
7. half a month board mold according to claim 6, which is characterized in that the transparent material is transparent photosensitive resin, Asia
Gram force, PC material or glass powder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822140298.2U CN209289601U (en) | 2018-12-19 | 2018-12-19 | A kind of half a month board mold |
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| CN201822140298.2U CN209289601U (en) | 2018-12-19 | 2018-12-19 | A kind of half a month board mold |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111035496A (en) * | 2019-12-30 | 2020-04-21 | 顾翔宇 | Human lower limb orthopedic brace and mapping device and manufacturing method thereof |
| CN113040980A (en) * | 2021-05-28 | 2021-06-29 | 北京大学第三医院（北京大学第三临床医学院） | Solid polyurethane meniscus transplant substitute and preparation method thereof |
| CN113143546A (en) * | 2021-05-28 | 2021-07-23 | 北京大学第三医院（北京大学第三临床医学院） | Meniscus transplant substitute and preparation method thereof |
| CN113288524A (en) * | 2021-05-28 | 2021-08-24 | 北京大学第三医院（北京大学第三临床医学院） | Lateral meniscus graft substitute with bone bridge-like fixation structure and method of manufacture |
| CN117547648A (en) * | 2024-01-12 | 2024-02-13 | 北京大学第三医院（北京大学第三临床医学院） | Preparation method of meniscus hydrogel material, meniscus manufacturing method and meniscus |
-
2018
- 2018-12-19 CN CN201822140298.2U patent/CN209289601U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111035496A (en) * | 2019-12-30 | 2020-04-21 | 顾翔宇 | Human lower limb orthopedic brace and mapping device and manufacturing method thereof |
| CN113040980A (en) * | 2021-05-28 | 2021-06-29 | 北京大学第三医院（北京大学第三临床医学院） | Solid polyurethane meniscus transplant substitute and preparation method thereof |
| CN113143546A (en) * | 2021-05-28 | 2021-07-23 | 北京大学第三医院（北京大学第三临床医学院） | Meniscus transplant substitute and preparation method thereof |
| CN113040980B (en) * | 2021-05-28 | 2021-08-24 | 北京大学第三医院（北京大学第三临床医学院） | Solid polyurethane meniscus transplant substitute and preparation method thereof |
| CN113288524A (en) * | 2021-05-28 | 2021-08-24 | 北京大学第三医院（北京大学第三临床医学院） | Lateral meniscus graft substitute with bone bridge-like fixation structure and method of manufacture |
| CN117547648A (en) * | 2024-01-12 | 2024-02-13 | 北京大学第三医院（北京大学第三临床医学院） | Preparation method of meniscus hydrogel material, meniscus manufacturing method and meniscus |
| CN117547648B (en) * | 2024-01-12 | 2024-04-09 | 北京大学第三医院（北京大学第三临床医学院） | Preparation method of meniscus hydrogel material, meniscus manufacturing method and meniscus |
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