CN210019807U - Combined sacrum and pelvis prosthesis - Google Patents
Combined sacrum and pelvis prosthesis Download PDFInfo
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- CN210019807U CN210019807U CN201821879184.3U CN201821879184U CN210019807U CN 210019807 U CN210019807 U CN 210019807U CN 201821879184 U CN201821879184 U CN 201821879184U CN 210019807 U CN210019807 U CN 210019807U
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Abstract
The utility model discloses a sacrum and pelvis combined prosthesis, which comprises a sacroiliac fixing piece, a connecting rod and a mortar cup component, wherein the sacroiliac fixing piece is detachably connected with one end of the connecting rod, and the mortar cup component is detachably connected with the other end of the connecting rod; sacroiliac fixing part comprises a spinal fixing component and an ilium fixing component, a first spine structure, a first screw hole and a first long hole are arranged on one side of the spinal fixing component fixed with the spinal, a screw penetrating through the first spine structure and the first screw hole is used for fixing the spinal, the first long hole is used for bone growth and penetration, a second spine structure, a second screw hole and a second long hole are arranged on one side of the ilium fixing component fixed with the ilium, a screw penetrating through the second spine structure and the second screw hole is used for fixing the ilium, and the second long hole is used for bone growth and penetration. The utility model discloses false physical stamina is used for whole sacrum and half pelvis hip joint to unite the excision postoperative and is rebuild, has great meaning.
Description
Technical Field
The utility model belongs to an artificial prosthesis, in particular to a combined sacrum and pelvis prosthesis.
Background
The biomechanical action of the sacrum is to transfer the body weight from the lumbar vertebra downwards to the ilia at two sides through the joint surfaces of the sacrum iliacs at two sides, namely to connect the lumbar vertebra and the ilia at two sides to form a triangular stable support. The existing reconstruction after the full sacrectomy needs to adopt a nail-rod system to connect the lower lumbar vertebra and the bilateral ilium. The nail-stick system is an internal fixation device, not a prosthesis, and provides only initial stability, long-term stability being dependent on bone healing. After the total sacrum resection, local huge bone defect can not be realized spontaneously, and bone grafting is very difficult; long-term follow-up results show that there are some potential risks in reconstructing the sacroiliac region after a full sacrectomy using a nail-rod system: the occurrence rate of the open ring of the pelvis is very high due to the looseness and the breakage of the nail rod and the subsidence of the lumbar vertebra.
The biomechanical action of the pelvis is to transfer the weight transferred from the sacrum to the lower limbs via the hip joint. The existing reconstruction after the hemipelvic resection adopts a plurality of methods: the assembled prosthesis is fixed on the residual ilium when the ilium part is remained, and the screw rod system is used for connecting and fixing the prosthesis on the lower lumbar when the ilium is completely cut and even the sacroiliac joint is cut. A modular prosthesis can provide long-term stability, but requires adequate iliac residues; the nail-rod fixed prosthesis can not provide long-term stability, has huge bone defects, is difficult to implant bones, and is easy to have the problems of looseness, fracture and the like after long-term follow-up.
The reconstruction methods respectively used after the full sacrum resection and the half pelvis resection cannot be used for the reconstruction after the combined resection of the hip joint of the full sacrum and the half pelvis, the field is blank at present, and no reconstruction method is available at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides a sacrum and pelvis combined prosthesis which can be used for reconstruction after combined resection of the total sacrum and the half pelvis hip joint.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the sacrum and pelvis combined prosthesis comprises a sacroiliac fixing piece, a connecting rod and a acetabular cup component, wherein the sacroiliac fixing piece is detachably connected with one end of the connecting rod, and the acetabular cup component is detachably connected with the other end of the connecting rod; sacroiliac fixing part comprises a spinal fixing component and an ilium fixing component, the spinal fixing component is provided with a first spine structure, a first screw hole and a first elongated hole with one side of the spinal fixing, screws penetrating through the first spine structure and the first screw hole are used for fixing the spinal, the first elongated hole is used for the growth of bones to penetrate, the ilium fixing component is provided with a second spine structure, a second screw hole and a second elongated hole with one side of the ilium fixing component, the screws penetrating through the second spine structure and the second screw hole are used for fixing the ilium, and the second elongated hole is used for the growth of the bones to penetrate.
The spine fixing component is provided with a first spine structure, a first screw hole and a first elongated hole so as to better fix the prosthesis and the spine; the second spine structure, the second screw hole and the second growth hole are arranged on the ilium fixing component, so that the prosthesis and the ilium can be better fixed. The utility model discloses sacroiliac mounting, connecting rod and acetabular cup subassembly are for dismantling the connection, are convenient for match not unidimensional subassembly according to different patients.
As an improvement of the above technical scheme, the sacroiliac fixing piece is prepared by 3D printing, the first spine structure, the first screw hole and the first elongated hole in the spine fixing component are integrally formed, and the second spine structure, the second screw hole and the second elongated hole in the sacroiliac fixing component are integrally formed.
According to the actual situation of a patient, the sacroiliac fixing piece suitable for the patient is manufactured by adopting personalized design and 3D printing.
As an improvement of the above technical solution, the sacroiliac fixing part further comprises a first connecting assembly connected with the connecting rod, the cup assembly comprises a cup and a second connecting assembly connected with the connecting rod, the cup is provided with a third screw hole, a screw passing through the third screw hole is used for fixing a femoral joint, and the cup and the second connecting assembly are integrally formed; the connecting rods comprise transverse connecting rods connected with the first connecting assembly and longitudinal connecting rods connected with the second connecting assembly, and the transverse connecting rods and the longitudinal connecting rods are integrally formed; the first connecting assembly and the transverse connecting rod are in mortise and tenon connection, transverse nail channels which are matched with each other and used for screw thread connection are arranged inside the mortise and tenon connection of the first connecting assembly and the transverse connecting rod, and a fourth screw hole used for a screw to enter is arranged on one side of the transverse connecting rod, which is far away from the sacroiliac fixing piece; the second connecting assembly and the longitudinal connecting rod are in mortise and tenon connection, and a longitudinal nail channel which is matched with each other and used for a screw to be in threaded connection is arranged in the mortise and tenon connection of the second connecting assembly and the longitudinal connecting rod.
Preferably, the connecting piece has multiple specifications to be selectable, is a prefabricated standardized module, can select transverse connecting rods and longitudinal connecting rods with different lengths, and adjusts the position of a central point in the mortar: such as abduction angle, anteversion angle and outward shift of the height of the rotating center, the posture which is most suitable for the health of the patient is achieved; the second connecting component and the mortar cup have various specifications and can be selected as a prefabricated standardized module, so that the purposes of changing the anteversion angle and the abduction angle are achieved, and the posture which is most suitable for the health of a patient is achieved.
As a further improvement of the technical scheme, the first connecting assembly is provided with a first tenon, and the transverse connecting rod is provided with a first mortise; the second connecting assembly is provided with a second tenon, and the longitudinal connecting rod is provided with a second mortise slot.
As a further improvement of the above technical solution, one end of the first connecting assembly connected to the transverse connecting rod is provided with a first engagement structure in which protrusions and grooves alternate in the radial direction, one end of the transverse connecting rod connected to the first connecting assembly is provided with a second engagement structure in which protrusions and grooves alternate in the radial direction, and the first engagement structure and the second engagement structure are engaged and connected.
As a further improvement of the above technical solution, the conicity of the protrusions and the grooves in the first and second meshing structures in the horizontal direction is 5 ° to 30 °, and the conicity of the protrusions in the first and second meshing structures in the vertical direction and near the outer side is 0.1 ° to 10 °.
The tapered rotation-preventing occlusion tooth structure has the function of adjusting the forward inclination angle and the abduction angle of the mortar cup, and each tooth structure of the occlusion tooth is identical in size and is equally divided into a circle. The horizontal taper of the meshing structure is beneficial to dispersing the stress and the shearing force in the horizontal direction and preventing the stress from being concentrated; the vertical taper of the meshing structure has the anti-loosening function; the conicity and the size of the transverse connecting rod and the first connecting component are the same, and after the transverse connecting rod and the first connecting component are locked by screws, the mutual conicity is more fastened after pressure applied by the screws, and the transverse connecting rod and the first connecting component are not easy to loosen.
As a further improvement of the above technical solution, when the first connecting component is provided with a first tenon and the transverse connecting rod is provided with a first mortise, the first tenon protrudes outwards relative to the first engaging structure.
As a further improvement of the above technical solution, one end of the second connecting assembly connected to the longitudinal connecting rod is provided with a third engagement structure in which the protrusions and the grooves alternate in the radial direction, one end of the longitudinal connecting rod connected to the second connecting assembly is provided with a fourth engagement structure in which the protrusions and the grooves alternate in the radial direction, and the third engagement structure and the fourth engagement structure are engaged and connected.
As a further improvement of the above technical solution, the conicity of the protrusions and the grooves in the third meshing structure and the fourth meshing structure in the horizontal direction is 5 ° to 30 °, and the conicity of the protrusions in the third meshing structure and the fourth meshing structure in the vertical direction and near the outer side is 0.1 ° to 10 °.
The anti-rotation occlusion tooth structure with the taper plays a role in adjusting the anteversion angle and the abduction angle of the mortar cup, the size of each tooth structure of the occlusion tooth is the same, and the occlusion tooth structure is equally divided into a circle, so that the abduction angle of the mortar cup can be adjusted according to the actual condition of a patient. The horizontal taper of the meshing structure is beneficial to dispersing the stress and the shearing force in the horizontal direction and preventing the stress from being concentrated; the vertical taper of the meshing structure has the anti-loosening function; the conicity and the size of the longitudinal connecting rod and the second connecting component are the same, and after the longitudinal connecting rod and the second connecting component are locked by screws, the mutual conicity is fastened more through the pressure applied by the screws and is not easy to loosen.
As a further improvement of the above technical solution, when the second connecting assembly is provided with a second tenon, and the longitudinal connecting rod is provided with a second mortise, the second tenon protrudes outwards relative to the third engaging structure.
The beneficial effects of the utility model reside in that: the utility model provides a sacrum and pelvis combined prosthesis, which is the first prosthesis design in the world aiming at reconstruction after combined resection of the sacrum and the hip joint of the half pelvis; the utility model discloses the false body has following advantage:
1) the sacroiliac fixing piece comprises a spine fixing component and an ilium fixing component, the spine fixing component is provided with a first spine structure, a first screw hole and a first long-term hole, the ilium fixing component is provided with a second spine structure, a second screw hole and a second long-term hole, the first screw hole, the second screw hole, the first spine structure and the second spine structure are beneficial to increasing the initial stability of the prosthesis, the first long-term hole and the second long-term hole in the bone tissue contact part are beneficial to bone ingrowth, and the long-term stability of the prosthesis after operation is increased;
2) the sacroiliac fixing piece, the connecting rod and the acetabular cup component of the utility model are detachably connected, so that components with different sizes can be matched according to different patients, and the prosthesis and the skeleton structure of the patient are highly matched;
3) only 3D printing is adopted for the sacroiliac fixing piece, and the connecting rod and the mortar cup component are manufactured by traditional processing, so that the total cost is reduced, and the manufacturing time is shortened;
4) the angle and the position of the mortar cup can be adjusted in the operation;
5) the connecting rod, the sacroiliac fixing piece and the acetabular cup component comprise threaded connection of screws and occlusion connection of an occlusion structure, and the occlusion structure has a guiding function, so that the assembly difficulty of a doctor in the operation process can be reduced; when a patient uses the prosthesis in the subsequent process, even if the prosthesis is abraded to a certain extent, the stability of the prosthesis in the later period is good.
Drawings
Fig. 1 is a schematic structural view of the sacrum and pelvis joint prosthesis of the present invention when installed;
fig. 2 is a schematic structural view of the sacrum and pelvis joint prosthesis of the present invention when not installed;
fig. 3 is an enlarged schematic view of the sacroiliac fixing part of the present invention;
fig. 4 is an enlarged schematic structural view (partial structural perspective) of the connecting rod of the present invention;
fig. 5 is an enlarged schematic structural view of the mortar cup assembly of the present invention;
fig. 6 shows the first, second, third or fourth engaging structures of the present invention in an enlarged manner; fig. 6A is a top view of the first engagement structure, the second engagement structure, the third engagement structure, or the fourth engagement structure, and fig. 6B is a side view of the first engagement structure, the second engagement structure, the third engagement structure, or the fourth engagement structure;
in fig. 1 to 6, 1, a sacroiliac fixing part, 11, a spine fixing component, 111, a first screw hole, 112, a first spine structure, 113, a first elongated hole, 12, an ilium fixing component, 121, a second screw hole, 122, a second spine structure, 123, a second elongated hole, 13, a first connecting component, 2, a connecting rod, 21, a transverse connecting rod, 22, a longitudinal connecting rod, 3, a cup component, 31, a cup, 32, a second connecting component, 33, a third screw hole, 4, a fourth screw hole, 5, a first mortise, 51, a first tenon, 6, a second engagement structure, 61, a first engagement structure, 7, a transverse nail path, 8, a longitudinal nail path, 9, a second mortise, 91, a second tenon, 10, a fourth engagement structure, 101, a third engagement structure.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to the following embodiments and accompanying drawings.
It should be understood that the terms "first", "second", "third" and "fourth", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
Example 1
An embodiment of the sacrum and pelvis joint prosthesis of the present invention, as shown in fig. 1 to 6, comprises a sacrum and pelvis joint prosthesis 1, a connecting rod 2 and a acetabular cup component 3, wherein the sacrum and pelvis joint prosthesis 1 is detachably connected with one end of the connecting rod 2, and the acetabular cup component 3 is detachably connected with the other end of the connecting rod 2; the sacroiliac fixing piece 1 comprises a spinal fixing component 11 and an iliac fixing component 12, wherein a first spine structure 112, a first screw hole 111 and a first elongated hole 113 are arranged on one side, fixed to the spinal column, of the spinal fixing component 11, a screw penetrating through the first spine structure 112 and the first screw hole 111 is used for fixing the spinal column, the first elongated hole 113 is used for bone growth and penetration, a second spine structure 122, a second screw 121 and a second elongated hole 123 are arranged on one side, fixed to the iliac bone, of the sacroiliac fixing component 12, screws penetrating through the second spine structure 122 and the second screw hole 121 are used for fixing the iliac bone, and the second elongated hole 123 is used for bone growth and penetration.
The first spine structure 112, the first screw hole 111 and the first elongated hole 113 of the spinal fixation assembly 11 are provided for better fixation of the prosthesis to the spinal column; the second spine structure 122, the second screw hole 121 and the second elongated hole 123 of the iliac fixation component 12 are provided for better fixation of the prosthesis to the ilia. The utility model discloses sacroiliac mounting 1, connecting rod 2 and acetabular cup subassembly 3 are for dismantling the connection, are convenient for match not unidimensional subassembly according to different patients.
Preferably, in order to be customized according to the actual condition of the patient, the sacroiliac fixation member 1 is prepared by 3D printing, the first spine structure 112, the first screw hole 111 and the first elongated hole 113 in the spinal fixation assembly 11 are integrally formed, and the second spine structure 122, the second screw hole 121 and the second elongated hole 123 in the iliac fixation assembly 12 are integrally formed.
Preferably, in order to detachably connect the sacroiliac fixing piece 1 with the connecting rod 2, the cup assembly 3 is firmly detachably connected with the connecting rod 2, the sacroiliac fixing piece 1 further comprises a first connecting assembly 13 connected with the connecting rod 2, the cup assembly 3 comprises a cup 31 and a second connecting assembly 32 connected with the connecting rod 2, the cup 31 is of an inwards concave hemispherical shape and is provided with a third screw hole 33, a screw penetrating through the third screw hole 33 is used for fixing a femoral joint, and the cup 31 and the second connecting assembly 32 are integrally formed; the connecting rod 2 comprises a transverse connecting rod 21 connected with the first connecting component 13 and a longitudinal connecting rod 22 connected with the second connecting component 32, and the transverse connecting rod 21 and the longitudinal connecting rod 22 are integrally formed; the first connecting assembly 13 is in mortise and tenon connection with the transverse connecting rod 21, transverse nail channels 7 which are matched with each other and are used for screw thread connection are arranged inside the mortise and tenon connection of the first connecting assembly 13 and the transverse connecting rod, and a fourth screw hole 4 for a screw to enter is arranged on one side of the transverse connecting rod 21, which is far away from the sacroiliac fixing piece 1; the second connecting assembly 32 is in mortise and tenon connection with the longitudinal connecting rod 22, and the longitudinal nail channel 8 which is matched with each other and is used for screw thread connection is arranged inside the mortise and tenon connection of the second connecting assembly 32 and the longitudinal connecting rod 22.
Preferably, the connecting rods 2 have various specifications, and as a prefabricated standardized module, the transverse connecting rods 21 and the longitudinal connecting rods 22 with different lengths can be selected to adjust the position of the central point in the mortar: such as abduction angle, anteversion angle and outward shift of the height of the rotating center, the posture which is most suitable for the health of the patient is achieved; the second connecting component 32 and the mortar cup 31 have various specifications and can be selected as a pre-processed standardized module, so that the purposes of changing the anteversion angle and the abduction angle are achieved, and the posture which is most suitable for the health of a patient is achieved.
The detachable connection mode is preferably as follows: the first connecting component 13 is provided with a first tenon 51, and the transverse connecting rod 21 is provided with a first mortise slot 5; the second connecting component 32 is provided with a second tenon 91, and the longitudinal connecting rod 22 is provided with a second mortise slot 9.
Preferably, one end of the first connecting member 13 connected with the transverse connecting rod 21 is provided with a first engagement structure 61 with alternating projections and recesses in the radial direction, and the first tenon 51 projects outwards relative to the first engagement structure 61; one end of the transverse connecting rod 21 connected with the first connecting component 13 is provided with a second meshing structure 6 with alternating bulges and grooves in the radial direction, and the first meshing structure 61 is meshed with the second meshing structure 6; the conicity of the bulges and the grooves in the first meshing structure 61 and the second meshing structure 6 in the horizontal direction is 5-30 degrees, and the conicity of the bulges in the first meshing structure 61 and the second meshing structure 6 in the vertical direction and close to the outer side is 0.1-10 degrees
Preferably, one end of the second connecting assembly 32 connected to the longitudinal connecting rod 22 is provided with a third engagement structure 101 with alternating projections and recesses in the radial direction, the second tenon 91 projecting outwards with respect to the third engagement structure 101; one end of the longitudinal connecting rod 22 connected with the second connecting component 32 is provided with a fourth occlusion structure 10 with alternating bulges and grooves in the radial direction, and the third occlusion structure 101 is in occlusion connection with the fourth occlusion structure 10; the conicity of the bulges and the grooves in the third meshing structure 101 and the fourth meshing structure 10 in the horizontal direction is 5-30 degrees, and the conicity of the bulges in the third meshing structure 101 and the fourth meshing structure 10 in the vertical direction and close to the outer side is 0.1-10 degrees.
The tapered rotation-preventing occlusion tooth structure plays a role in adjusting the forward rake angle and the abduction angle of the mortar cup 31, the size of each tooth structure of the occlusion tooth is the same, and the occlusion tooth structure is equally divided into a circle, so that the abduction angle of the mortar cup 31 can be adjusted according to the actual condition of a patient. The horizontal taper of the meshing structure is beneficial to dispersing the stress and the shearing force in the horizontal direction and preventing the stress from being concentrated; the vertical taper of the meshing structure has the anti-loosening function. The conicity and the size of the longitudinal connecting rod 22 and the second connecting component 32 are the same, and after the longitudinal connecting rod and the second connecting component are locked by screws, the mutual conicity is more fastened by the pressure exerted by the screws and is not easy to loosen; the transverse connecting rod 21 and the first connecting component 13 are identical in taper and size, and after the transverse connecting rod and the first connecting component are locked by screws, the mutual taper is more fastened through pressure exerted by the screws and is not easy to loosen.
In addition, the present embodiment further provides a process for manufacturing a prosthesis:
1) acquiring patient CT data;
2) the doctor discusses the design scheme and the manufacturing process of the prosthesis;
3) designing the prosthesis according with the doctor requirements according to the doctor suggestions and requirements;
4) after the design plan is determined, the prosthesis is manufactured (including manufacturing modes, post-processing and other links).
After the prosthesis is manufactured, the prosthesis is delivered to a doctor.
It should be finally noted that the above embodiments are intended to illustrate the technical solutions of the present invention, not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced equally without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The sacrum and pelvis combined prosthesis is characterized by comprising a sacroiliac fixing piece, a connecting rod and a acetabular cup component, wherein the sacroiliac fixing piece is detachably connected with one end of the connecting rod, and the acetabular cup component is detachably connected with the other end of the connecting rod; sacroiliac fixing part comprises a spinal fixing component and an ilium fixing component, the spinal fixing component is provided with a first spine structure, a first screw hole and a first elongated hole with one side of the spinal fixing, screws penetrating through the first spine structure and the first screw hole are used for fixing the spinal, the first elongated hole is used for the growth of bones to penetrate, the ilium fixing component is provided with a second spine structure, a second screw hole and a second elongated hole with one side of the ilium fixing component, the screws penetrating through the second spine structure and the second screw hole are used for fixing the ilium, and the second elongated hole is used for the growth of the bones to penetrate.
2. The sacral and pelvic joint prosthesis of claim 1, wherein the sacroiliac fixation element is prepared by 3D printing, the first spine structure, the first screw hole, and the first elongated hole in the spinal fixation assembly are integrally formed, and the second spine structure, the second screw hole, and the second elongated hole in the sacroiliac fixation assembly are integrally formed.
3. The sacral and pelvic joint prosthesis of claim 1 or 2, wherein the sacroiliac fixation member further comprises a first connecting member connected to the connecting rod, the cup member comprises a cup and a second connecting member connected to the connecting rod, the cup is provided with a third screw hole, a screw passing through the third screw hole is used for fixing the femoral joint, and the cup is integrally formed with the second connecting member; the connecting rods comprise transverse connecting rods connected with the first connecting assemblies and longitudinal connecting rods connected with the second connecting assemblies, and the transverse connecting rods and the longitudinal connecting rods are integrally formed; the first connecting assembly and the transverse connecting rod are in mortise and tenon connection, transverse nail channels which are matched with each other and used for screw thread connection are arranged inside the mortise and tenon connection of the first connecting assembly and the transverse connecting rod, and a fourth screw hole used for a screw to enter is arranged on one side of the transverse connecting rod, which is far away from the sacroiliac fixing piece; the second connecting assembly and the longitudinal connecting rod are in mortise and tenon connection, and a longitudinal nail channel which is matched with each other and used for a screw to be in threaded connection is arranged in the mortise and tenon connection of the second connecting assembly and the longitudinal connecting rod.
4. The sacral and pelvic joint prosthesis of claim 3, wherein the first connecting element is provided with a first tenon and the transverse connecting rod is provided with a first mortise and groove; the second connecting assembly is provided with a second tenon, and the longitudinal connecting rod is provided with a second mortise slot.
5. The sacral and pelvic joint prosthesis of claim 3, wherein an end of the first connecting member connected to the transverse connecting rod is provided with a first interlocking structure of alternating projections and recesses in a radial direction, and an end of the transverse connecting rod connected to the first connecting member is provided with a second interlocking structure of alternating projections and recesses in a radial direction, the first interlocking structure being in interlocking connection with the second interlocking structure.
6. The sacral and pelvic joint prosthesis of claim 5, wherein the lobes and recesses of the first and second articulating structures have a taper in the horizontal direction of 5 ℃ to 30 ℃ and the lobes of the first and second articulating structures have a taper in the vertical direction and adjacent the lateral side of 0.1 ℃ to 10 ℃.
7. The sacral and pelvic joint prosthesis of claim 5, wherein the first tenon is outwardly convex relative to the first engaging structure when the first connecting element is provided with the first tenon and the transverse connecting rod is provided with the first mortise and groove.
8. The sacral and pelvic joint prosthesis of claim 3, wherein an end of the second connecting member connected to the longitudinal connecting rod is provided with a third interlocking structure of alternating projections and recesses in a radial direction, and an end of the longitudinal connecting rod connected to the second connecting member is provided with a fourth interlocking structure of alternating projections and recesses in a radial direction, the third interlocking structure being in interlocking connection with the fourth interlocking structure.
9. The sacral and pelvic joint prosthesis of claim 8, wherein the lobes and recesses of the third and fourth configurations have a taper in the horizontal direction of 5 ℃ to 30 ℃ and the lobes of the third and fourth configurations have a taper in the vertical direction and adjacent the lateral side of 0.1 ℃ to 10 ℃.
10. The sacral and pelvic joint prosthesis of claim 8, wherein when the second connecting assembly is provided with a second tenon and the longitudinal connecting rod is provided with a second mortise, the second tenon is outwardly convex relative to the third engagement structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821879184.3U CN210019807U (en) | 2018-11-14 | 2018-11-14 | Combined sacrum and pelvis prosthesis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821879184.3U CN210019807U (en) | 2018-11-14 | 2018-11-14 | Combined sacrum and pelvis prosthesis |
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| CN210019807U true CN210019807U (en) | 2020-02-07 |
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| CN201821879184.3U Active CN210019807U (en) | 2018-11-14 | 2018-11-14 | Combined sacrum and pelvis prosthesis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109259899A (en) * | 2018-11-14 | 2019-01-25 | 广州华钛三维材料制造有限公司 | Rumpbone and symphysis pelvis prosthese |
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2018
- 2018-11-14 CN CN201821879184.3U patent/CN210019807U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109259899A (en) * | 2018-11-14 | 2019-01-25 | 广州华钛三维材料制造有限公司 | Rumpbone and symphysis pelvis prosthese |
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