CN111391326A - Calcaneus titanium cage forming die and calcaneus titanium cage - Google Patents

Calcaneus titanium cage forming die and calcaneus titanium cage Download PDF

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Publication number
CN111391326A
CN111391326A CN202010165364.0A CN202010165364A CN111391326A CN 111391326 A CN111391326 A CN 111391326A CN 202010165364 A CN202010165364 A CN 202010165364A CN 111391326 A CN111391326 A CN 111391326A
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calcaneus
holes
model
titanium
hole
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赵建文
张建政
王晓伟
吴卓
宋占林
孙天胜
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7th Medical Center of PLA General Hospital
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7th Medical Center of PLA General Hospital
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    • 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
    • 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/28—Bones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F27/00—Making wire network, i.e. wire nets
    • B21F27/005—Wire network per se
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F27/00—Making wire network, i.e. wire nets
    • B21F27/12—Making special types or portions of network by methods or means specially adapted therefor
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
    • 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/28—Bones
    • A61F2002/2835—Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
    • 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A61F2002/30948—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using computerized tomography, i.e. CT scans
    • 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2002/30985—Designing or manufacturing processes using three dimensional printing [3DP]

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  • Chemical & Material Sciences (AREA)
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  • Manufacturing & Machinery (AREA)
  • Biomedical Technology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
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Abstract

The invention discloses a calcaneus titanium cage forming die which comprises a calcaneus model and an outer die, wherein the outer die is sleeved outside the calcaneus model in an openable and closable mode, the outer die is matched with the calcaneus model in shape, and a cavity for containing a titanium net is formed between the outer die and the calcaneus model. And, a calcaneus titanium cage. The calcaneus titanium cage forming die is simple in structure and convenient to operate, a required titanium cage can be pressed quickly, and the manufacturing cost of the titanium cage is greatly reduced; the calcaneus titanium cage is simple in preparation method, low in cost, high in universality and capable of meeting clinical requirements.

Description

Calcaneus titanium cage forming die and calcaneus titanium cage
Technical Field
The invention relates to the field of titanium cage processing. More specifically, the invention relates to a calcaneus titanium cage forming die and a calcaneus titanium cage.
Background
Among the defective patient's of calcaneum of current calcaneum reconstructive surgery, generally all acquire the CT data to patient row two side calcaneum CT scanning, print the mirror image according to CT data 3D and handle and obtain affected side calcaneum 3D and print the model, again with the cladding of titanium net in the outside of 3D printing the model, through strikeing the moulding, obtain the calcaneum titanium cage, titanium cage preparation process is loaded down with trivial details, it is long consuming time, and every patient all need carry out 3D to affected side calcaneum and print the modeling, the cost of manufacture is high.
Disclosure of Invention
The invention aims to provide a calcaneus titanium cage forming die which is simple in structure and convenient to operate, can be used for quickly pressing a required titanium cage, and greatly reduces the manufacturing cost of the titanium cage.
The invention also aims to provide the calcaneus titanium cage which is simple in preparation method, low in cost, high in universality and capable of meeting clinical requirements.
In order to realize the purpose, the invention provides a calcaneus titanium cage forming die which comprises a calcaneus model and an outer die, wherein the outer die is sleeved outside the calcaneus model in an openable and closable manner, the outer die is matched with the calcaneus model in shape, and a cavity for accommodating a titanium mesh is formed between the outer die and the calcaneus model.
Preferably, the calcaneus titanium cage forming die comprises an inner side outer die and an outer side outer die which are pivoted, a first opening is formed in one end of the inner side outer die, a second opening is formed in one end of the outer side outer die, and the first opening and the second opening are encircled to form an opening for accommodating a near bone end of the calcaneus model.
Preferably, the outer side walls of the inner outer die and the outer die, which are positioned on the inner side and the outer side of the calcaneus, of the calcaneus titanium cage forming die are symmetrically provided with compression bars.
Preferably, the calcaneus titanium cage forming die comprises an inner side calcaneus model matched with the inner side outer die and an outer side calcaneus model matched with the outer side outer die, a female plug-in connector is arranged inside the inner side calcaneus model, and a male plug-in connector matched with the female plug-in connector is arranged inside the outer side calcaneus model.
Preferably, the calcaneus titanium cage forming die is characterized in that the calcaneus model is prepared by the following steps:
firstly, grouping calcaneus defect patients according to a preset foot length range;
step two, extracting lateral X-ray data of the normal side of each group of patients, and calculating the average length and the average width of the calcaneus of the group of patients;
and step three, extracting the CT data of the calcaneus corresponding to the average length and the average width of the calcaneus, and performing 3D printing after three-dimensional reconstruction to obtain the calcaneus CT image.
Preferably, the outer die of the calcaneus titanium cage forming die is manufactured by outwards enlarging the outer die by 0.5-2mm on the basis of the calcaneus model.
The invention also provides a calcaneus titanium cage which is formed by placing a titanium mesh in the calcaneus titanium cage forming die for press fit and trimming, wherein the thickness of the titanium mesh is equal to the distance between the outer die and the calcaneus model.
Preferably, the calcaneus titanium cage comprises a titanium mesh body, wherein a plurality of nail holes are uniformly distributed in the titanium mesh body, and the nail holes in two adjacent rows and two adjacent columns are staggered; a plurality of rows of first inclined holes are arranged at intervals in the transverse direction, any first inclined hole is a strip-shaped hole which is obliquely arranged from left to bottom and right, and the four angles of the first inclined hole are respectively adjacent to one nail hole; a plurality of rows of second inclined holes are arranged at intervals in the transverse direction, any second inclined hole is a long-strip-shaped hole which is obliquely arranged from top to bottom left to right, and the four angles of the second inclined hole are respectively adjacent to one nail hole; the nail hole structure comprises a plurality of rows of vertical holes, wherein each row of vertical holes are arranged at intervals in a transverse mode, any vertical hole is a vertically-arranged long strip-shaped hole, four corners of the vertical hole are respectively adjacent to one nail hole, two first inclined holes, two second inclined holes and two vertical holes are arranged around each nail hole in the 3n th row, the first inclined holes, the second inclined holes, the first inclined holes, the vertical holes, the second inclined holes and the two vertical holes are arranged in a divergent mode in the anticlockwise direction according to the rules of the vertical holes, the first inclined holes, the second inclined holes and the first inclined holes, a first inclined hole, a second inclined hole and a vertical hole are arranged around each nail hole in the 3n +1 th row and the 3n +2 th row, the first inclined holes, the second inclined holes and the vertical holes are arranged in a convergent mode in the anticlockwise direction according to the rules of the first inclined holes, the second inclined holes and.
Preferably, the diameter of the nail hole of the calcaneus titanium cage is 2.0mm and/or 3.5mm, the widths of the first inclined hole, the second inclined hole and the vertical hole are 1.2mm, and the length of the first inclined hole is 2.5-2.7 times of the diameter of the nail hole.
The invention has at least the following beneficial effects:
firstly, the prepared calcaneus model has universality within a preset foot length range by limiting the preparation method of the calcaneus model, so that the preparation cost of the calcaneus titanium cage is greatly reduced, and the calcaneus titanium cage pressed by the corresponding calcaneus model can be selected according to the foot length of a patient during operation;
secondly, nail holes which are arranged in a staggered mode are uniformly distributed on the titanium mesh body, a plurality of rows of first inclined holes, a plurality of rows of second inclined holes and a plurality of rows of vertical holes are additionally arranged among the nail holes according to a certain rule, and the first inclined holes, the second inclined holes and the vertical holes are all strip-shaped holes;
thirdly, the calcaneus titanium cage forming die is simple in structure and convenient to operate, the required titanium cage can be pressed quickly, and the manufacturing cost of the titanium cage is greatly reduced; the calcaneus titanium cage is simple in preparation method, low in cost, high in universality and capable of meeting clinical requirements.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic longitudinal sectional structural view of a calcaneus titanium cage forming die according to an embodiment of the invention;
FIG. 2 is a schematic longitudinal sectional view of a calcaneus titanium cage forming die according to an embodiment of the invention;
FIG. 3 is a right side view schematic structural view of a calcaneus titanium cage forming die in an embodiment of the invention;
fig. 4 is a partial structural view of a titanium mesh in one embodiment of the invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1, the invention provides a calcaneus titanium cage forming die, which comprises a calcaneus model 1 and an external die 2, wherein the external die 2 is sleeved outside the calcaneus model 1 in an openable and closable manner, the external die 2 is matched with the calcaneus model 1 in shape, and a cavity 3 for accommodating a titanium mesh is formed between the external die 2 and the calcaneus model 1.
In the technical scheme, the calcaneus model 1 is manufactured through 3D printing, the outer die 2 is matched with the calcaneus model 1 in shape, the outer die 2 is sleeved outside the calcaneus model 1 in an openable and closable mode, a cavity for containing a titanium net is formed between the outer die 2 and the calcaneus model 1, specifically, the outer die 2 can be cut into two halves and connected through connecting pieces, and the connecting pieces include but are not limited to bolt-nut connecting pieces and hinge connecting pieces 23 so as to be convenient for taking, placing and pressing the titanium cage.
When the titanium cage is used, the external mold 2 is opened firstly, the titanium net is placed into the external mold 2, the calcaneus model 1 is placed, the titanium net is folded by hands to wrap the calcaneus model 1 preliminarily, the external mold 2 is covered, the titanium net is pressed and formed forcibly, then the redundant titanium net exposed outside the external mold 2 is trimmed, the external mold 2 is opened again, the semi-finished titanium cage is taken out, the titanium net is slightly broken open, the calcaneus model 1 wrapped in the semi-finished titanium cage is taken out, and finally the titanium net is closed again to obtain the finished titanium cage.
The calcaneus titanium cage forming die is simple in structure and convenient to operate, a required titanium cage can be pressed quickly, and manufacturing cost of the titanium cage is greatly reduced.
In another technical solution, as shown in fig. 1, the outer mold 2 includes an inner outer mold 21 and an outer mold 22 that are pivotally connected, one end of the inner outer mold 21 is provided with a first opening, one end of the outer mold 22 is provided with a second opening, and the first opening and the second opening surround to form an opening for accommodating a proximal bone end of the calcaneus model 1. In the above technical solution, the inner side of the foot is defined as the inner side, the outer side of the foot is defined as the outer side, the outer mold 2 comprises an inner side outer mold 21 and an outer side outer mold 22 which are pivoted, the pivoting modes include but are not limited to pin connection and hinge 23 connection, the inner side outer mold 21 and the outer side outer mold 22 are obtained by cutting the outer mold 2 into two halves along the foot length direction, preferably, the outer mold 2 is cut along the foot length central line to obtain the symmetrical inner side outer mold 21 and the outer side outer mold 22, so as to facilitate the subsequent pressing and taking out of the titanium cage; one end of the inner external mold 21 is provided with a first opening, one end of the outer external mold 22 is provided with a second opening, the first opening and the second opening surround to form an opening for accommodating a near-distance bone end of the calcaneus model 1, so that the near-distance bone end of the calcaneus model 1 is exposed, after pressing is facilitated, a titanium mesh of the near-distance bone end is trimmed, and a titanium cage with an open end surface is obtained.
In another technical solution, as shown in fig. 1 and 3, the outer side walls of the inner external mold 21 and the outer external mold 22, which are located on the inner side and the outer side of the calcaneus, of the calcaneus titanium cage forming mold are symmetrically provided with pressing rods 4. The pressing rod is arranged, so that the outer die can be conveniently pressed, and labor is saved.
In another technical solution, as shown in fig. 2, the calcaneus titanium cage forming die includes an inner calcaneus model 11 matched with the inner outer mold 21 and an outer calcaneus model 12 matched with the outer mold 22, a female connector 13 is arranged inside the inner calcaneus model 11, and a male connector 14 matched with the female connector 13 is arranged inside the outer calcaneus model 12. Here, the calcaneus model 1 is further provided with an inner calcaneus model 11 matched with the inner outer mold 21 and an outer calcaneus model 12 matched with the outer mold 22, the inner calcaneus model 11 and the outer calcaneus model 12 are inserted through the female insertion piece 13 and the male insertion piece 14, when the device is used, the calcaneus model can be placed into the outer mold 2 in two steps, firstly, the inner calcaneus model 11 or the outer calcaneus model 12 is placed in advance, the inner wall of the inner calcaneus model 11 or the outer calcaneus model 12 is hammered to enable the inner calcaneus model 11 or the outer calcaneus model 12 to be tightly pressed with the corresponding outer mold 21, and secondly, the inner calcaneus model 11 and the outer calcaneus model 12 are covered through the female insertion piece 13 and the male insertion piece 14, so that the titanium mesh on one side is pre-pressed before the outer mold 2 is covered, and the device is beneficial to the subsequent press forming and is particularly.
In another technical scheme, the calcaneus titanium cage forming die is characterized in that the calcaneus model 1 is prepared by the following steps: firstly, grouping calcaneus defect patients according to a preset foot length range; step two, extracting lateral X-ray data of the normal side of each group of patients, and calculating the average length and the average width of the calcaneus of the group of patients; and step three, extracting the CT data of the calcaneus corresponding to the average length and the average width of the calcaneus, and performing 3D printing after three-dimensional reconstruction to obtain the calcaneus CT image. Here, a method of manufacturing the calcaneus model 1 is preferably selected so that the manufactured calcaneus model 1 has versatility within a preset foot length range, which can be divided with reference to the length of a standard shoe size.
In another technical scheme, as shown in fig. 1 and 2, the outer die 2 of the calcaneus titanium cage forming die is manufactured by outwards enlarging the thickness of 0.5-2mm on the basis of the calcaneus model 1, and the specific enlargement size can be determined according to the thickness of the used titanium mesh.
The invention also provides a calcaneus titanium cage which is formed by placing a titanium mesh in the calcaneus titanium cage forming die for press fit and trimming, wherein the thickness of the titanium mesh is equal to the distance between the outer die 2 and the calcaneus model 1.
The calcaneus titanium cage is obtained by placing the titanium mesh in a calcaneus titanium cage forming die and performing press fitting and trimming, and the calcaneus titanium cage is simple in preparation method, low in cost, high in universality and capable of meeting clinical requirements.
In another technical solution, as shown in fig. 4, the calcaneus titanium cage comprises a titanium mesh body, wherein a plurality of nail holes 5 are uniformly distributed on the titanium mesh body, and the nail holes 5 in two adjacent rows and two adjacent columns are staggered; a plurality of rows of first inclined holes 6 are formed, each row of first inclined holes 6 is provided with a plurality of transverse spaced holes, any first inclined hole 6 is a strip-shaped hole which is obliquely arranged from left to bottom and right, and four angles of the first inclined hole are respectively adjacent to one nail hole 5; a plurality of rows of second inclined holes 7 are formed, each row of second inclined holes 7 is provided with a plurality of second inclined holes 7 which are transversely arranged at intervals, any second inclined hole 7 is a long-strip-shaped hole which is obliquely arranged from top to bottom, and the four angles of the second inclined hole are respectively adjacent to one nail hole 5; the nail hole structure comprises a plurality of rows of vertical holes 8, wherein each row of vertical holes 8 is provided with a plurality of vertical holes which are arranged at intervals transversely, any vertical hole 8 is a vertically arranged long strip-shaped hole, four corners of the vertical hole are respectively adjacent to one nail hole 5, two first inclined holes 6, two second inclined holes 7 and two vertical holes 8 are arranged around each nail hole 5 in the 3n th row, the nail holes are arranged in a manner of being diverged according to the rules of the vertical holes 8, the second inclined holes 7, the first inclined holes 6, the vertical holes 8, the second inclined holes 7 and the first inclined holes 6 in the anticlockwise direction, one first inclined hole 6, one second inclined hole 7 and one vertical hole 8 are arranged around each nail hole 5 in the 3n +1 th row and the 3n +2 th row, the nail holes are arranged in a manner of being gathered according to the rules of the first inclined holes 6, the second inclined holes 7 and the vertical holes 8 in the anticlockwise direction, and n is a natural number. The titanium mesh body is uniformly provided with the staggered nail holes 5, a plurality of rows of first inclined holes 6, a plurality of rows of second inclined holes 7 and a plurality of rows of vertical holes 8 are additionally arranged among the nail holes 5 according to a certain rule, and the first inclined holes 6, the second inclined holes 7 and the vertical holes 8 are all strip-shaped holes.
In another technical scheme, in the calcaneus titanium cage, the diameter of the nail hole 5 is 2.0mm and/or 3.5mm, the widths of the first inclined hole 6, the second inclined hole 7 and the vertical hole 8 are 1.2mm, and the length of the first inclined hole is 2.5-2.7 times of the diameter of the nail hole 5. Here, a preferred specification of the nail holes 5, the first inclined holes 6, the second inclined holes 7 and the vertical holes 8 is enumerated to make the titanium mesh easier to shape while satisfying the requirement of the rigidity of the titanium mesh.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (9)

1. The calcaneus titanium cage forming die is characterized by comprising a calcaneus model and an outer die, wherein the outer die is sleeved outside the calcaneus model in an openable and closable mode, the outer die is matched with the calcaneus model in shape, and a cavity for containing a titanium net is formed between the outer die and the calcaneus model.
2. The calcaneus titanium cage forming die of claim 1, wherein the outer die comprises an inner outer die and an outer die which are pivoted, a first opening is formed in one end of the inner outer die, a second opening is formed in one end of the outer die, and the first opening and the second opening surround to form an opening for accommodating a near bone end of the calcaneus model.
3. The calcaneus titanium cage forming die of claim 2, wherein pressure rods are symmetrically arranged on the outer side walls of the inner outer die and the outer die, which are positioned on the inner side and the outer side of the calcaneus.
4. The calcaneus titanium cage forming die of claim 3, wherein the calcaneus model comprises an inner calcaneus model matched with the inner outer die and an outer calcaneus model matched with the outer die, a female plug is arranged inside the inner calcaneus model, and a male plug matched with the female plug is arranged inside the outer calcaneus model.
5. The calcaneus titanium cage forming die of claim 1, wherein the calcaneus model is made by the steps of:
firstly, grouping calcaneus defect patients according to a preset foot length range;
step two, extracting lateral X-ray data of the normal side of each group of patients, and calculating the average length and the average width of the calcaneus of the group of patients;
and step three, extracting the CT data of the calcaneus corresponding to the average length and the average width of the calcaneus, and performing 3D printing after three-dimensional reconstruction to obtain the calcaneus CT image.
6. The calcaneus titanium cage forming die of claim 5, wherein the outer die is formed by enlarging the outer die by 0.5-2mm on the basis of the calcaneus model.
7. The calcaneus titanium cage is characterized in that the calcaneus titanium cage is formed by placing a titanium net in a calcaneus titanium cage forming die according to any one of claims 1-6, and performing press fit and trimming, wherein the thickness of the titanium net is equal to the distance between the outer die and the calcaneus model.
8. The calcaneus titanium cage according to claim 7, wherein the titanium mesh comprises a titanium mesh body, a plurality of nail holes are uniformly distributed on the titanium mesh body, and the nail holes in two adjacent rows and two adjacent columns are staggered; a plurality of rows of first inclined holes are arranged at intervals in the transverse direction, any first inclined hole is a strip-shaped hole which is obliquely arranged from left to bottom and right, and the four angles of the first inclined hole are respectively adjacent to one nail hole; a plurality of rows of second inclined holes are arranged at intervals in the transverse direction, any second inclined hole is a long-strip-shaped hole which is obliquely arranged from top to bottom left to right, and the four angles of the second inclined hole are respectively adjacent to one nail hole; the nail hole structure comprises a plurality of rows of vertical holes, wherein each row of vertical holes are arranged at intervals in a transverse mode, any vertical hole is a vertically-arranged long strip-shaped hole, four corners of the vertical hole are respectively adjacent to one nail hole, two first inclined holes, two second inclined holes and two vertical holes are arranged around each nail hole in the 3n th row, the first inclined holes, the second inclined holes, the first inclined holes, the vertical holes, the second inclined holes and the two vertical holes are arranged in a divergent mode in the anticlockwise direction according to the rules of the vertical holes, the first inclined holes, the second inclined holes and the first inclined holes, a first inclined hole, a second inclined hole and a vertical hole are arranged around each nail hole in the 3n +1 th row and the 3n +2 th row, the first inclined holes, the second inclined holes and the vertical holes are arranged in a convergent mode in the anticlockwise direction according to the rules of the first inclined holes, the second inclined holes and.
9. The calcaneus titanium cage according to claim 8, wherein the nail holes are 2.0mm and/or 3.5mm in diameter, the first inclined holes, the second inclined holes and the vertical holes are 1.2mm in width and 2.5-2.7 times longer than the nail holes in diameter.
CN202010165364.0A 2020-03-11 2020-03-11 Calcaneus titanium cage forming die and calcaneus titanium cage Pending CN111391326A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113230002A (en) * 2021-06-22 2021-08-10 安阳市第六人民医院(安阳市口腔医院) Preparation method of personalized titanium mesh for bone defect reconstruction in dental implantation area

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113230002A (en) * 2021-06-22 2021-08-10 安阳市第六人民医院(安阳市口腔医院) Preparation method of personalized titanium mesh for bone defect reconstruction in dental implantation area
CN113230002B (en) * 2021-06-22 2024-05-14 安阳市第六人民医院(安阳市口腔医院) Preparation method of personalized titanium mesh for bone defect reconstruction of dental implant area

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