CN210044151U - External analogue means of bone meal planting - Google Patents
External analogue means of bone meal planting Download PDFInfo
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- CN210044151U CN210044151U CN201920166327.4U CN201920166327U CN210044151U CN 210044151 U CN210044151 U CN 210044151U CN 201920166327 U CN201920166327 U CN 201920166327U CN 210044151 U CN210044151 U CN 210044151U
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- 229940036811 bone meal Drugs 0.000 title claims abstract description 130
- 239000002374 bone meal Substances 0.000 title claims abstract description 130
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 111
- 238000004088 simulation Methods 0.000 claims abstract description 81
- 239000007943 implant Substances 0.000 claims abstract description 63
- 230000001054 cortical effect Effects 0.000 claims abstract description 39
- 238000005056 compaction Methods 0.000 claims abstract description 29
- 210000004872 soft tissue Anatomy 0.000 claims abstract description 26
- 239000000758 substrate Substances 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims description 56
- 239000000463 material Substances 0.000 claims description 10
- 238000000338 in vitro Methods 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 3
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- 238000010146 3D printing Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 238000003709 image segmentation Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 5
- 238000002513 implantation Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000010422 painting Methods 0.000 description 4
- 230000011218 segmentation Effects 0.000 description 4
- 239000004053 dental implant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 210000004373 mandible Anatomy 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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Abstract
The utility model relates to an experimental model field especially relates to an external analogue means of bone meal planting. The utility model provides an external simulation device for bone meal implants, which comprises a model body, a first compaction piece and a second compaction piece, wherein the model body comprises a soft tissue simulation substrate, a bone meal accommodating groove is arranged on the soft tissue simulation substrate, a cortical bone simulation tube is arranged in the bone meal accommodating groove, an implant is arranged in the cortical bone simulation tube, and bone meal is filled around the cortical bone simulation tube; the first compacting piece comprises a pressing head piece and a holding part, the shape of the pressing head piece is matched with the bone meal accommodating groove, and the pressing head piece is provided with an implant accommodating groove with an opening positioned on a contact surface of the pressing head piece and the bone meal; the second compaction piece comprises a positioning piece and a weight platform, and the shape of the positioning piece is matched with the bone meal accommodating groove. The utility model discloses utilize external model to regard as the gold standard with volume, the form of implanting the bone meal in the model, thereby provide a bone meal and plant external model construction method.
Description
Technical Field
The utility model relates to an experimental model field especially relates to an external analogue means of bone meal planting.
Background
Modern oral implant techniques are the first treatment options for dentition defects/loss. In recent years, the demand of the implant in the aesthetic region of the anterior teeth is increasing day by day, and different from the traditional implant with the function of functional restoration as the guide, the implant in the aesthetic region puts forward higher, stable and predictable aesthetic requirements on the premise of ensuring good chewing function. To achieve the success of dental implants in the aesthetic region, it is necessary to reconstruct a harmonious red-white aesthetic structure of the appropriate size in this region. However, in the aesthetic area, the edentulous site often has different degrees of inadequate bone mass, and the labial lamina level absorption is very common in clinics. In order to ensure the success of implant repair, the Bone mass above lmm must be reserved on the labial and lingual palatal sides of the implant, which greatly limits the implant repair of the anterior dental area, the cracked Bone defect of the labial Bone plate often appears after the implant is implanted, and the Bone Regeneration technology (GBR) is an effective method for solving the Bone defect around the implant. In recent years, GBR is widely applied to the aspect of clinical bone defect tooth implantation, the success rate of implantation is greatly improved, and the implantation indications are expanded.
In the dental implant operation, when the bone quantity of the alveolar bone is insufficient, bone powder needs to be filled before the dental implant to enhance the stability of the alveolar bone. In order to evaluate the bone meal absorption effect, CBCT image data are needed to be utilized to reconstruct bone meal 24 weeks in and after the operation in a three-dimensional manner so as to analyze the volume change and the morphological change of the bone meal. In order to segment bone powder more accurately, the existing medical image segmentation algorithm needs to be evaluated to select a proper segmentation algorithm.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, the present invention is directed to a bone meal implantation external simulation device and further provides an evaluation method for three-dimensional reconstruction of a medical image segmentation algorithm of bone meal, which is used to solve the problems in the prior art.
In order to achieve the above and other related objects, one aspect of the present invention provides an external simulation device for bone meal implantation, comprising a model body, a first compression member and a second compression member;
the model body comprises a soft tissue simulation substrate, a bone powder accommodating groove is formed in the soft tissue simulation substrate, a cortical bone simulation tube extending along the height direction of the bone powder accommodating groove is arranged in the bone powder accommodating groove, an implant is arranged in the cortical bone simulation tube, the outer diameter of the implant is matched with the inner diameter of the cortical bone simulation tube, bone powder is filled around the cortical bone simulation tube, and the opening of the cortical bone simulation tube is lower than the notch of the bone powder accommodating groove;
the first compacting piece comprises a pressing head piece and a holding part, the shape of the pressing head piece is matched with the bone meal accommodating groove, the contact surface of the pressing head piece and the bone meal is a plane, the pressing head piece is provided with an implant accommodating groove with an opening positioned on the contact surface of the pressing head piece and the bone meal, and the side surface of the pressing head piece is provided with a marking line;
the second compaction piece comprises a positioning piece and a weight platform, a connecting piece is arranged between the positioning piece and the weight platform, the shape of the positioning piece is matched with the bone meal accommodating groove, and the contact surface of the positioning piece and the bone meal is a plane.
The utility model discloses in some embodiments, the material of institute soft tissue simulation basement is photosensitive resin, the material of cortex simulation pipe is 3D printing peek material.
The utility model discloses in some embodiments, the height of bone meal storage tank is 12.2 ~ 12.4mm, the bone meal storage tank is cylindrical.
The utility model discloses in some embodiments, the inner chamber height of cortex bone simulation pipe is 10.4 ~ 10.6mm, cortex bone simulation pipe is cylindrical.
The utility model discloses in some embodiments, the mouth of pipe of cortex bone simulation pipe is less than the notch 1.7 ~ 1.9mm of bone meal storage tank.
The utility model discloses in some embodiments, the external diameter of planting body cooperatees with the internal diameter of cortex bone simulation pipe, the end that exposes of planting body flushes with the notch of bone meal storage tank.
The utility model discloses in some embodiments, the pressure head spare is cylindrical, the external diameter of pressure head spare is 11.6 ~ 11.8 mm.
The utility model discloses in some embodiments, the setting element is cylindrical, the external diameter of setting element is 11.6 ~ 11.8 mm.
Drawings
Fig. 1 shows a schematic structural view of the bone meal implant external simulation device of the present invention.
Fig. 2 shows a schematic view of a first compactor according to the present invention.
Fig. 3 shows a schematic view of a second compactor according to the present invention.
Description of the element reference numerals
1 Soft tissue simulation substrate
11 bone meal containing groove
12 cortex bone simulation tube
13 implant
14 bone meal
15 soft tissue simulation substrate
2 first compaction member
21 pressure head
22 grip part
23 implant holding tank
24 marking line
3 second compaction
31 positioning piece
32 weight platform
33 connecting piece
Detailed Description
The utility model discloses the inventor is through specific model design to implant the volume of bone meal, form in the model as the gold standard of aassessment segmentation algorithm, thereby provided an external analogue means is planted to bone meal, and further provided the aassessment method that is used for the medical image segmentation algorithm of three-dimensional reconstruction bone meal, accomplished on this basis the utility model discloses a bone meal is planted to the inventor.
The utility model discloses the first aspect provides an external analogue means of bone meal planting, refers to fig. 1 ~ 3, including model body, first compaction piece and second compaction piece.
Referring to fig. 1, the model body comprises a soft tissue simulation substrate 1, a bone powder accommodating groove is formed in the soft tissue simulation substrate 1, a cortical bone simulation tube 12 extending along the height direction of the bone powder accommodating groove is arranged in the bone powder accommodating groove, an implant 13 is arranged in the cortical bone simulation tube 12, the outer diameter of the implant 13 is matched with the inner diameter of the cortical bone simulation tube 12, bone powder 14 is filled around the cortical bone simulation tube 12, and the orifice of the cortical bone simulation tube 12 is lower than the notch of the bone powder accommodating groove 11;
referring to fig. 2, the first compacting member comprises a pressing head member 21 and a holding part 22, the shape of the pressing head member 21 is matched with the bone meal accommodating groove 11, the contact surface of the pressing head member 21 and the bone meal 14 is a plane, the pressing head member 21 is provided with an implant accommodating groove 23, the opening of the implant accommodating groove is located on the contact surface of the pressing head member 21 and the bone meal 14, and the side surface of the pressing head member 21 is provided with a marking line 24;
referring to fig. 3, the second compacting member 3 includes 31 positioning members and a weight platform 32, a connecting member 33 is disposed between the positioning members 31 and the weight platform 32, the positioning members 31 are matched with the bone meal accommodating groove 11, and the contact surface between the positioning members 31 and the bone meal 14 is a plane.
When the bone meal planting body external simulation device is used, the bone meal 14 in the bone meal planting body external simulation device can be compacted through the first compacting part 2, the bone meal 14 is pressed to be lower than the end face of the planting body 13 by 1.7-1.9 mm, the bone meal accommodating groove 11 is compacted through the second compacting part 3, and after standing, CBCT image data of the simulation device can be acquired. Then, bone meal information data can be calculated according to the obtained CBCT image data (for example, by methods such as morphological image interpolation, threshold filling, layer-by-layer hand-drawing, and the like, and for example, the bone meal information data can be volume, morphology, and the like), and then the bone meal actual parameters are compared with the bone meal information data obtained by algorithm calculation to determine whether the calculation result of the algorithm is close to the bone meal actual parameters, so as to evaluate the accuracy of the algorithm.
The utility model provides an among the external analogue means is planted to bone meal, can include the model body, the model includes soft tissue simulation basement 1, soft tissue simulation basement 1 usually can be the cylinder, and its material can be including but not limited to the combination of one or more in the photosensitive resin, the material of photosensitive resin cooperatees with the soft tissue usually, for example, the CT value of photosensitive resin can be similar with the soft tissue usually to can be used for simulating the soft tissue, the internal diameter of soft tissue simulation basement 1 can be 11.9 ~ 12.0mm, the CT value usually is a measurement unit of certain local tissue of survey human body or organ density size, also is called Hounsfield Unit (HU), and usually, the air can be for-1000, and compact bone can be 1000. Be equipped with the bone meal storage tank on the soft tissue simulation basement 1, 1 direction of height (being soft tissue simulation basement 1 axis direction) extension of soft tissue simulation basement can be followed usually to bone meal storage tank 11 to can provide the space that is used for simulating bone meal to plant, bone meal storage tank 11 can be cylindrical, preferably with soft tissue simulation basement 1 is concentric, bone meal storage tank 11's height can be 12.2 ~ 12.4mm, and the internal diameter can be 5.5 ~ 5.7 mm. The bone meal accommodating groove 11 is provided with a cortical bone simulation tube 12 extending along the height direction of the bone meal accommodating groove 11 (i.e. the axial direction of the bone meal accommodating groove), so as to provide a space for accommodating the implant 13, and bone meal can be arranged around the cortical bone simulation tube 12, the exposed end of the implant 13 (i.e. the end of the implant 13 exposed out of the cortical bone simulation tube 12) is usually the head of the implant 13, and the maximum outer diameter of the head of the implant 13 can be larger than the inner diameter of the cortical bone simulation tube 12. The cortical bone simulation tube 12 can be cylindrical, is preferably concentric with the bone powder containing groove 11, the inner cavity height of the cortical bone simulation tube 12 is 10.4-10.6 mm, the inner diameter can be 4.55-4.65 mm, the tube wall thickness can be 0.45-0.55 mm, the material of the cortical bone simulation tube 12 can be matched with cortical bone, for example, the CT value of the cortical bone simulation tube 12 is generally similar to that of the cortical bone, the cortical bone simulation tube 12 is a 3D printing peek material, more specifically, a 3D printing peek tube, and the outer diameter of the implant 13 is matched with the inner diameter of the cortical bone simulation tube 12. The mouth of the cortical bone simulation tube 12 is usually lower than the notch of the bone powder containing groove 11, for example, the mouth of the cortical bone simulation tube 12 can be 1.7-1.9 mm lower than the notch of the bone powder containing groove 11, and the exposed end of the implant 13 is flush with the notch of the bone powder containing groove 11, so that the bone powder in the external simulation device of the bone powder implant 13 can be compacted by the first compacting member 2, and the bone powder 14 is compacted to be lower than the end face of the implant 13 for a certain distance.
The utility model provides an in the external analogue means of bone meal planting, can also include first compaction 2, compaction 2 can include pressure head 21 and the portion of gripping 22, and pressure head 21 interconnects with the portion of gripping 22 to can pass to the pressure head 21 with power through the portion of gripping 22, carry out the compaction to bone meal 14. The shape of the pressure head piece 21 is generally matched with the bone powder containing groove 11, for example, the pressure head piece 21 is generally cylindrical, the outer diameter of the pressure head piece 21 can be 11.6-11.8 mm, and the outer diameter of the pressure head piece 21 is generally slightly smaller than the inner diameter of the bone powder containing groove 11, so that the pressure head piece 21 can extend into the bone powder containing groove 11. The contact surface of the pressure head piece 21 and the bone meal 14 is a plane, so that the upper surface of the bone meal 14 can be flatly compacted. The last planting body holding tank 23 that is equipped with the opening and is located the contact surface of pressure head piece 21 and bone meal 14 of pressure head piece 21, the shape and the position of planting body holding tank 23 cooperate with planting body 13 usually, the extending direction of planting body holding tank 23 can be the direction of height of pressure head piece 21 usually (be the axis direction of pressure head piece), for example, planting body holding tank 23 is cylindrical usually, the internal diameter can be 4.5 ~ 4.7mm, highly can be 10.4 ~ 10.6mm to can be when the compaction, make the end that exposes of planting body 13 be located planting body holding tank 23. The side surface of the head piece 21 is provided with a marking line 24, so that the distance of the head piece 21 extending into the bone meal accommodating groove 11 can be determined during compaction.
The utility model provides an in-vitro analogue means is planted to bone meal can also include second compaction 3, second compaction 3 can include setting element 31 and weight platform 32, be equipped with connecting piece 33 between setting element 31 and the weight platform 32 to can pass through the connecting piece with the power that bears on the weight platform 32 and transmit for setting element 31, carry out the compaction to bone meal 14. The shape of the positioning member 31 is generally matched with the bone powder containing groove 11, for example, the positioning member 31 is generally cylindrical, the outer diameter of the positioning member 31 can be 11.7-11.9 mm, and the outer diameter of the positioning member 31 is generally slightly smaller than the inner diameter of the bone powder containing groove 11, so that the positioning member can be extended into the bone powder containing groove 11. The contact surface of the positioning piece 31 and the bone meal 14 is a plane, so that the implant 13 can be properly pressed into the soft tissue simulation substrate 1, the upper surface of the implant 13 is not lower than the upper surface of the bone meal, and preferably, the upper surface of the implant 13 is 1.7-1.9 mm higher than the upper surface of the bone meal.
The utility model discloses a second aspect provides a bone meal plant in vitro model construction method, include:
compacting the bone powder in the bone powder implant external simulation device through the first compaction piece, and compacting the bone powder to be 1.7-1.9 mm lower than the end face of the implant;
and compacting the bone meal accommodating groove through the second compacting piece, and standing.
The utility model provides an among the evaluation method, can carry out the compaction to the bone meal among the external analogue means of bone meal planting through first compaction piece, press the bone meal to being less than planting body terminal surface 1.7 ~ 1.9mm, rethread second compaction piece carries out the compaction to the bone meal storage tank, and after the setting, can acquire the external model of bone meal planting.
The utility model discloses the third aspect provides the aassessment method that is used for the medical image segmentation algorithm of three-dimensional reconstruction bone meal, uses the utility model discloses the external analogue means is planted to bone meal that the first aspect provided, include:
compacting the bone powder in the bone powder implant external simulation device through the first compaction piece, and compacting the bone powder to be 1.7-1.9 mm lower than the end face of the implant;
compacting the bone meal accommodating groove through a second compacting piece, and standing;
acquiring CBCT image data of a simulation device;
bone meal information data are calculated according to the CBCT image data;
and comparing the actual parameters of the bone meal with bone meal information data obtained by algorithm calculation.
In the assessment method provided by the present invention, the second pressing member presses the bone meal accommodating groove, the force applied is generally constant, and more preferably, the force applied is 0.97-0.99N, so as to maintain a static state.
The utility model provides an among the evaluation method, can carry out the compaction to the bone meal among the external analogue means of bone meal planting through first compaction piece, press the bone meal to being less than planting body terminal surface 1.7 ~ 1.9mm, rethread second compaction piece carries out the compaction to the bone meal storage tank, and after the setting, can acquire analogue means's CBCT image data. And then, bone meal information data can be calculated according to the obtained CBCT image data, and then the bone meal actual parameters are compared with the bone meal information data obtained by the algorithm calculation to determine whether the calculation result of the algorithm is close to the bone meal actual parameters or not, so that the accuracy of the algorithm is evaluated.
In the process of acquiring the medical image, real information is lost to different degrees, so that the real volume and the form of the bone powder filling cannot be reflected by the segmented result of the image. The inventor of the utility model utilizes an in vitro model and takes the volume and the form of the implanted bone meal in the model as the gold standard of an assessment segmentation algorithm, thereby providing a method for constructing the in vitro model of the bone meal implant. The bone powder implant in-vitro model construction method can analyze the spatial position relation of alveolar bone, bone powder, an implant and soft tissue under the clinical condition and the volume of the implanted bone powder under the clinical condition, so that the bone powder in-vitro model reflecting the clinical condition and related tools can be further designed through 3D modeling engineering software to obtain different parts in the in-vitro model printed by different materials, and an evaluation method of a medical image segmentation algorithm for three-dimensionally reconstructing the bone powder is further provided.
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
It is to be understood that the processing equipment or apparatus not specifically identified in the following examples is conventional in the art.
Furthermore, it is to be understood that one or more method steps mentioned in the present application do not exclude that other method steps may also be present before or after the combined steps or that other method steps may also be inserted between these explicitly mentioned steps, unless otherwise indicated; it is also to be understood that references to a combined connection between one or more devices/apparatus in the present disclosure are not to preclude the presence or addition of further devices/apparatus before or after the combined device/apparatus, unless otherwise indicated. Moreover, unless otherwise indicated, the numbering of the various method steps is merely a convenient tool for identifying the various method steps, and is not intended to limit the order in which the method steps may be arranged or the scope of the invention which may be practiced.
Example 1
In vitro model construction for simulating clinical conditions:
the soft tissue adopts 3D printing photosensitive resin, the bone powder filling area adopts filling bone powder (type: ZB-KL-0.25-A), the cortical bone adopts 3D printing peek thin tube, and the implant area adopts a Zeeman aesthetic implant.
Using a concentric cylinder with the outer diameter of 20mm, the inner diameter of 12mm and the height of 18mm as a soft tissue; the concentric cylinders with the outer diameter of 12mm, the inner diameter of 5.6mm and the height of 10.5mm are bone meal filling areas; concentric cylinders with the outer diameter of 5.6mm, the inner diameter of 4.6mm and the height of 10.5mm are used as cortical bones; a cylinder with a diameter of 4.6mm and a height of 10.5mm is used as an implant area (see fig. 1). The model respectively adopts photosensitive resin and peek materials to carry out 3D printing, and the printing error is 0.1%.
According to the type of the implant selected in the experiment, the plane of the implanted bone powder is parallel to the rough surface (the part without threads on the edge of the implant) of the implant surface, and the plane of the bone powder is 1.8mm lower than the plane of the implant.
1) The bone meal is compacted using a first bone meal compactor (see fig. 2). The tool presses the bone meal down and has a red mark at 1.8mm from the bottom of the compactor. Compacting the bone powder with the tool until the upper surface of the red circle is parallel to the upper surface of the outer concentric circle
2) Using a second bone meal compactor (see fig. 3), it is pressed onto the bone meal. A100 g standard stainless steel weight was placed on the bone meal compactor and allowed to stand for about 10 minutes without the application of additional external force.
The CBCT data of the model outside the body are shot, the obtained DICOM data of the model outside the body are imported into medical three-dimensional reconstruction software (the Medraw medical workstation is adopted in the embodiment), algorithms such as layer-by-layer hand drawing, morphological Interpolation and threshold filling are respectively used (in different three-dimensional reconstruction software, the algorithms are different, only three algorithms used in the Medraw medical workstation are listed in the embodiment, the morphological Interpolation is (by means of AMORPHOLOGIC-Based application for inter slice interaction of atomic Slices From Volumetric Images), layer-by-layer hand drawing is performed, namely manual segmentation, and the threshold filling is (by means of threshold-Based image segmentation algorithm research) to perform three-dimensional reconstruction on bone powder regions. Recording the volume and form matching degree of the bone powder reconstructed by different algorithms (registering the reconstructed bone powder with the designed bone powder, calculating the matching degree), and referring to the actual parameters of the bone powder of 928.44mm
3(pi is 3.14), bone meal morphology: the outer diameter is 12mm, the inner diameter is 5.6mm, the height is 10.5mm, the accuracy of different algorithms is further evaluated, and specific results are as follows:
average volume of bone meal obtained using layer-by-layer hand-painting of 828.18mm
3
Bone meal volume mean obtained using morphological interpolation889.01mm
3
Average bone meal volume obtained using threshold filling 728.23mm
3
From the data provided above, it can be seen that morphological interpolation has a higher accuracy for various algorithms.
Example 2
And (3) verification experiment:
the method comprises the following steps of filling a guide plate with designed bone meal, implementing a planting repair technology, shooting CBCT data of a patient after operation, and respectively rebuilding a bone meal region by using layer-by-layer hand painting, threshold filling and morphological interpolation, and comprises the following specific steps:
example is animal experiments (pig head experiment)
1. Three cylinders with the diameters of 4mm, 6mm and 7mm and the depths of 10mm are drilled at different parts of the mandible of the pig by using a trephine. And implanting the implant at a position 2mm away from the cylinders, respectively, filling the bone powder into 3 cylinders, and compacting.
2. Shooting CBCT data of the implanted bone powder and the implanted pig head.
3. CBCT data were read using a medraw workstation and bone meal in these three sets of data were reconstructed using layer-by-layer hand-painting, morphological interpolation, threshold filling, respectively (data were measured by two technicians, five times for each data using three methods and an average was taken).
The reconstruction results were evaluated and were as follows:
the bone meal volumes designed in the animal experiment are respectively as follows: 125.6mm
3、282.6mm
3、384.65mm
3
1. The actual results of the morphological interpolation were used:
115.5mm
3、264.51mm
3、369.26mm
3
the volume matching degree is 94.5 percent
2. Actual results using layer-by-layer hand-painting:
106.76mm
3、240.21mm
3、357.72mm
3
the volume matching degree is 88 percent
3. In animal experiments, the bone powder and the porcine mandible cannot be distinguished into boundaries through threshold value division, so that the bone powder and the porcine mandible cannot be divided smoothly.
From the above data, it can be known that the bone meal region can be reconstructed more accurately using a morphological interpolation algorithm.
From the above, the bone meal region can be reconstructed more accurately by the morphological interpolation algorithm, which is consistent with the above simulation verification result.
To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. The bone meal implant in-vitro simulation device is characterized by comprising a model body, a first compaction piece (2) and a second compaction piece (3);
the model body comprises a soft tissue simulation substrate (1), a bone powder accommodating groove (11) is formed in the soft tissue simulation substrate (1), a cortical bone simulation tube (12) extending along the height direction of the bone powder accommodating groove (11) is arranged in the bone powder accommodating groove (11), an implant (13) is arranged in the cortical bone simulation tube (12), the outer diameter of the implant (13) is matched with the inner diameter of the cortical bone simulation tube (12), bone powder is filled around the cortical bone simulation tube (12), and the opening of the cortical bone simulation tube (12) is lower than the notch of the bone powder accommodating groove (11);
the first compacting piece (2) comprises a press head piece (21) and a holding part (22), the shape of the press head piece (21) is matched with the bone meal accommodating groove (11), the contact surface of the press head piece (21) and the bone meal is a plane, the press head piece (21) is provided with an implant accommodating groove with an opening positioned on the contact surface of the press head piece (21) and the bone meal, and the side surface of the press head piece (21) is provided with a marking line (24);
the second compaction piece (3) comprises a positioning piece (31) and a weight platform (32), a connecting piece (33) is arranged between the positioning piece (31) and the weight platform (32), the shape of the positioning piece (31) is matched with the bone meal accommodating groove (11), and the contact surface of the positioning piece (31) and the bone meal is a plane.
2. The bone meal implant in-vitro simulation device according to claim 1, wherein the soft tissue simulation substrate (1) is made of photosensitive resin, and the cortical bone simulation tube (12) is made of 3D printed peek material.
3. The bone meal implant in-vitro simulation device according to claim 1, wherein the height of the bone meal accommodating groove (11) is 12.2-12.4 mm, and the bone meal accommodating groove (11) is cylindrical.
4. The bone meal implant in-vitro simulation device according to claim 1, wherein the inner cavity height of the cortical bone simulation tube (12) is 10.4-10.6 mm, and the cortical bone simulation tube (12) is cylindrical.
5. The bone meal implant in-vitro simulation device according to claim 1, wherein the mouth of the cortical bone simulation tube (12) is 1.7-1.9 mm lower than the notch of the bone meal accommodating groove (11).
6. The bone meal implant in-vitro simulation device according to claim 1, wherein the outer diameter of the implant (13) is matched with the inner diameter of the cortical bone simulation tube (12), and the exposed end of the implant (13) is flush with the notch of the bone meal accommodating groove (11).
7. The bone meal implant in-vitro simulation device according to claim 1, wherein the pressing head piece (21) is cylindrical, and the outer diameter of the pressing head piece (21) is 11.6-11.8 mm.
8. The bone meal implant in-vitro simulation device according to claim 1, wherein the positioning piece (31) is cylindrical, and the outer diameter of the positioning piece (31) is 11.6-11.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920166327.4U CN210044151U (en) | 2019-01-30 | 2019-01-30 | External analogue means of bone meal planting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920166327.4U CN210044151U (en) | 2019-01-30 | 2019-01-30 | External analogue means of bone meal planting |
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| CN210044151U true CN210044151U (en) | 2020-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920166327.4U Withdrawn - After Issue CN210044151U (en) | 2019-01-30 | 2019-01-30 | External analogue means of bone meal planting |
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| CN (1) | CN210044151U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806016A (en) * | 2019-01-30 | 2019-05-28 | 上海交通大学医学院附属第九人民医院 | A kind of in-vitro simulated device of bone meal plantation |
-
2019
- 2019-01-30 CN CN201920166327.4U patent/CN210044151U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806016A (en) * | 2019-01-30 | 2019-05-28 | 上海交通大学医学院附属第九人民医院 | A kind of in-vitro simulated device of bone meal plantation |
| CN109806016B (en) * | 2019-01-30 | 2024-08-27 | 江苏创英医疗器械有限公司 | Bone meal planting body external simulation device |
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