CN110664516A - Pelvis prosthesis - Google Patents
Pelvis prosthesis Download PDFInfo
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- CN110664516A CN110664516A CN201910901325.XA CN201910901325A CN110664516A CN 110664516 A CN110664516 A CN 110664516A CN 201910901325 A CN201910901325 A CN 201910901325A CN 110664516 A CN110664516 A CN 110664516A
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- pelvic
- post
- acetabular cup
- connecting column
- mounting
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- 210000004197 pelvis Anatomy 0.000 title claims abstract description 46
- 230000007246 mechanism Effects 0.000 claims abstract description 40
- 210000000588 acetabulum Anatomy 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims 2
- 238000011084 recovery Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 210000000988 bone and bone Anatomy 0.000 description 7
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 210000003781 tooth socket Anatomy 0.000 description 5
- 206010061336 Pelvic neoplasm Diseases 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 208000018084 Bone neoplasm Diseases 0.000 description 3
- 206010028980 Neoplasm Diseases 0.000 description 3
- 210000003049 pelvic bone Anatomy 0.000 description 3
- 238000002271 resection Methods 0.000 description 3
- 210000001981 hip bone Anatomy 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- 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
- A61F2/32—Joints for the hip
-
- 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
- A61F2/32—Joints for the hip
- A61F2002/3208—Bipolar or multipolar joints, e.g. having a femoral head articulating within an intermediate acetabular shell whilst said shell articulates within the natural acetabular socket or within an artificial outer shell
-
- 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
- A61F2/32—Joints for the hip
- A61F2002/3233—Joints for the hip having anti-luxation means for preventing complete dislocation of the femoral head from the acetabular cup
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention relates to a pelvis prosthesis, which comprises a pelvis support and an acetabular cup, and a connecting mechanism which is detachably arranged on the pelvis support and is used for connecting the acetabular cup; the connecting mechanism comprises a first connecting column arranged on the pelvic support, a second connecting column arranged on the acetabular cup and a supporting arm used for connecting the first connecting column and the second connecting column; the support arm is configured to restore the center of rotation of the acetabular cup by adjusting the angle of the first connection post to the pelvic support and the angle of the second connection post to the acetabular cup. The acetabulum rotation center recovery device can meet the acetabulum rotation center recovery of different osteotomy conditions, and has the characteristics of simple structure, mass production, wide applicability, easy popularization and the like.
Description
Technical Field
The invention belongs to the technical field of artificial prostheses, and particularly relates to a pelvis prosthesis.
Background
The pelvis is composed of left and right hip bones, an acetabulum, a sacrum and a coccyx, and bone connection between the left and right hip bones, and pelvic bone tumor is a common disease in pelvic injuries, and the resection of the pelvic bone tumor has certain challenges due to the complex structural form of the pelvic bone tumor.
Bone defects result from the removal of pelvic tumors, which require reconstruction through the pelvis to achieve continuity and stability between the patient's pelvis and other bone tissue to sustain the patient's necessary daily living, such as sitting and walking.
Aiming at reconstruction after pelvic tumor resection, the prior art discloses a gear type half pelvis, which can realize the change of the anteversion angle of the acetabulum and can also realize the rotation of the rotation center around the track of a screw 23 in a circle, but the rotation cannot be carried out to other positions except the circular track, and even if a prosthesis is customized and designed according to the tumor position, the actual rotation center of the acetabulum is inconsistent with the ideal rotation center due to inaccurate osteotomy in the operation, so that the dislocation, the instability, the left and right asymmetry and other conditions of the hip joint are caused.
Because the pelvic tumor position of each patient is different, the bone defect degree after tumor resection is different, the existing pelvic prosthesis can not meet the applicability of patients with different bone defect degrees, and the recovery of the acetabulum rotation center can not be well realized.
Disclosure of Invention
In order to solve all or part of the problems, the invention provides the pelvis prosthesis, which can solve the problem of recovering the rotation center of the acetabulum under the condition of different pelvis osteotomies, can increase the applicability of the pelvis prosthesis and improve the satisfaction degree of postoperative patients.
The invention provides a pelvis prosthesis, which comprises a pelvis support and an acetabular cup, and a connecting mechanism which is detachably arranged on the pelvis support and is used for connecting the acetabular cup; the connecting mechanism comprises a first connecting column arranged on the pelvic support, a second connecting column arranged on the acetabular cup and a supporting arm used for connecting the first connecting column and the second connecting column; the support arm is configured to restore the center of rotation of the acetabulum by adjusting the angle of the first connection post to the pelvic support and the angle of the second connection post to the acetabular cup.
Further, the supporting arms are respectively and vertically connected with the axial direction of the first connecting column and the axial direction of the second connecting column.
Furthermore, the pelvis support comprises a pelvis fixing seat and an installation column which is vertically connected with the bottom of the pelvis fixing seat and is used for connecting the first connecting column, and the first connecting column is coaxial with the installation column.
Further, the supporting arm is a plate member connecting the first connecting column and the second connecting column; the first connecting column is parallel to the second connecting column in the axial direction.
Furthermore, a first reinforcing column capable of being accommodated in the inner cavity of the mounting column is arranged on the first connecting column, mutually meshed first tooth grooves are arranged on mutually adjacent surfaces of the first connecting column and the mounting column, and through holes or threaded holes capable of penetrating through screws and used for mounting the first connecting column on the mounting column are axially arranged on the first connecting column and the mounting column.
Furthermore, the pelvis support comprises a pelvis fixing seat and a mounting plate vertically connected with the bottom of the pelvis fixing seat, and a second reinforcing column capable of being contained in an inner cavity of the first connecting column is vertically arranged on the mounting plate.
Furthermore, the support arm includes with the first plate body of the axial vertical connection of first spliced pole and with the first plate body link to each other and with the second plate body of the axial vertical connection of second spliced pole.
Further, the included angle between the first plate body and the second plate body is 60-120 degrees.
Further, first spliced pole with be provided with the second tooth's socket of mutual interlock on the mutual proximal surface of mounting panel, the axial of first spliced pole is provided with can run through the screw and be used for with first spliced pole install in through-hole or screw hole on the mounting panel.
Furthermore, the acetabular cup comprises an acetabular cup body and a third reinforcing column which is connected with the acetabular cup body and can be contained in an inner cavity of the second connecting column, third tooth grooves which are meshed with each other are arranged on the surfaces, which are adjacent to each other, of the second connecting column and the acetabular cup body, and through holes or threaded holes which can be penetrated through screws and are used for installing the acetabular cup on the second connecting column are axially arranged on the second connecting column.
The pelvis prosthesis provided by the invention is detachably arranged on the connecting mechanism on the pelvis support, and the connecting mechanisms with different sizes can be replaced according to the actual bone cutting condition of a patient in an operation, so that the requirement of the patient on recovering the acetabulum rotation center is met. By designing the connection between the first connecting column of the connecting mechanism and the pelvis support, the connection stability between the connecting mechanism and the pelvis support and the rotatable angle range of the connecting mechanism around the pelvis support can be increased, and when the angle between the first connecting column and the pelvis support is adjusted, the rotation center of the acetabulum can be adjusted, so that the recovery of the rotation center of the acetabulum of a patient under different osteotomy conditions is met, the applicability of the pelvis prosthesis is greatly improved, and the dislocation is reduced; the second connecting column of the connecting mechanism is connected with the acetabular cup, so that the connection stability of the connecting mechanism and the acetabular cup can be improved, and the abduction angle of the acetabular cup can be adjusted randomly, so that the requirements of patients in operation can be met.
The pelvis prosthesis can meet the requirement of the acetabulum rotation center recovery under different osteotomy conditions, and has the characteristics of simple structure, mass production, wide applicability, easiness in popularization and the like.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of a gear-type half pelvis disclosed in the prior art;
FIG. 2 is a schematic illustration of a pelvic prosthesis according to an embodiment of the invention;
FIG. 3 is a schematic view of an assembled configuration of the pelvic prosthesis shown in FIG. 2;
FIG. 4 is a schematic top view of the pelvic prosthesis of FIG. 2;
FIG. 5 is a schematic structural view of another pelvic prosthesis according to an embodiment of the present invention;
fig. 6 is a schematic view of an assembled configuration of the pelvic prosthesis shown in fig. 5.
Description of reference numerals: the pelvic prosthesis comprises a pelvic prosthesis 100, a pelvic support 1, a pelvic fixing seat 101, a mounting column 102, a mounting plate 103, a second reinforcing column 104, an acetabular cup 2, an acetabular cup body 201, a third reinforcing column 202, a connecting mechanism 3, a first connecting column 301, a first tooth groove 311, a first reinforcing column 312, a second tooth groove 313, a second connecting column 302, a third tooth groove 321, a supporting arm 303, a first plate body 331 and a second plate body 332.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Referring to fig. 2 to 4, the present embodiment provides a pelvic prosthesis 100, which includes a pelvic support 1 and an acetabular cup 2, a connecting mechanism 3 detachably mounted on the pelvic support 1 and used for connecting the acetabular cup 2; the connecting mechanism 3 comprises a first connecting column 301 arranged on the pelvic support 1, a second connecting column 302 arranged on the acetabular cup 2 and a supporting arm 303 used for connecting the first connecting column 301 and the second connecting column 302; the support arm 303 is configured to restore the center of rotation of the acetabulum by adjusting the angle of the first connection post 301 to the pelvic support 1 and the angle of the second connection post 302 to the acetabular cup 2.
The pelvic prosthesis 100 of this embodiment, demountable installation is in the coupling mechanism 3 on the pelvis support 1, can realize the coupling mechanism 3 of different specification and dimension and the supporting use of pelvis support 1 and acetabular cup 2, before the operation of pelvic tumour excision, accessible CT or X-ray film look over patient's osteotomy position to prepare a plurality of coupling mechanism 3 of similar size specification. Selecting a connecting mechanism 3 with corresponding specification according to the actual osteotomy position and size of the pelvis during operation, and adjusting the angle between the first connecting column 301 and the pelvis support 1 and the angle between the second connecting column 302 and the acetabular cup 2 according to the deflection condition of the acetabular rotation center when the pelvis prosthesis is installed, so that the installation of the pelvis prosthesis is matched with the osteotomy position, and the recovery of the rotation center is realized; if the position of the osteotomy caused by different tumor position and prediction, wrong osteotomy and the like in the operation is inconsistent with the expectation, connecting mechanisms with other specifications can be selected to realize the recovery of the rotation center.
By designing the connection between the first connecting column 301 of the connecting mechanism 3 and the pelvis support 1, the connection stability between the connecting mechanism 3 and the pelvis support 1 can be increased, and the angle range of the connecting mechanism 3 which can rotate around the pelvis support 1 can be increased, so that when the angle between the first connecting column 301 and the pelvis support 1 is adjusted, the rotation center of the acetabular cup 2 can be adjusted, the recovery of the acetabular rotation center of a patient under different osteotomy conditions can be met, the applicability of the pelvic prosthesis 100 is greatly improved, and the dislocation is reduced; the second connecting column 302 of the connecting mechanism 3 is connected with the acetabular cup 2, so that the connection stability of the connecting mechanism 3 and the acetabular cup 2 can be improved, and the abduction angle of the acetabular cup 2 can be adjusted at will, so as to meet the requirements of patients in operation.
The supporting arms 303 in this embodiment are perpendicularly connected to the axial direction of the first connecting column 301 and the axial direction of the second connecting column 302, respectively. When the angle between the first connecting column 301 and the pelvis support 1 is adjusted, the supporting arm 303 can rotate around the circumferential direction of the first connecting column 301 to further drive the acetabular cup 2 to rotate greatly by taking the supporting arm 303 as a rotation radius, and the supporting arm is respectively and vertically connected with the axial direction of the first connecting column 301 and the axial direction of the second connecting column 302, so that the rotation track of the acetabular cup around the first connecting column can be other tracks outside the circle center by taking the first connecting column as the circle center and far exceeds the rotation track of the acetabular cup in the gear-type half pelvis in the prior art, the adjustable range of the acetabular cup is remarkably increased, and the recovery of the rotation center of the acetabular cup is facilitated under the condition of different osteotomies.
The height of the rotation of the acetabular cup 2 around the first connecting column 301 and the radius of the circular track can be further expanded by adjusting the size of the supporting arm 303, so that the consistency of the bone defect position and the installation position of the pelvic prosthesis 100 is better met, and the recovery of the rotation center of the acetabulum of the patient is realized.
In one embodiment, referring to fig. 2 and 3, the pelvic support 1 comprises a pelvic holder 101 and a mounting post 102 vertically connected to the bottom of the pelvic holder 101 and for connecting a first connecting post 301, the first connecting post 301 being coaxial with the mounting post 102.
The support arm 303 in this embodiment is a plate member connecting the first connection post 301 and the second connection post 302; the first connecting column 301 is parallel to the axis of the second connecting column 302. The pelvic prosthesis 100 in the present embodiment is suitable for preparing a series of connection mechanisms 3 with different sizes and matching with the pelvic support 1 and the acetabular cup 2, and the restoration of the rotation center of the acetabulum under different osteotomy conditions can be realized when the pelvic prosthesis 100 is installed.
Referring to fig. 2 and 4, by rotating the included angle between the first connecting column 301 and the mounting column 102, the plate member can rotate circumferentially around the central axis of the first connecting column 301, adjustment of any position of the acetabular cup 2 on the circumferential track can be achieved, adjustment of the anteversion angle of the acetabular cup 2 can be achieved by adjusting the angle between the second connecting column 302 and the acetabular cup 2, and by replacing the connecting mechanisms 3 of the plate members with different lengths and the second connecting columns 302 with different lengths, adjustment of the position of the acetabular cup 2 in the up-down direction and the position on the circumferential track around different circumferential radiuses of the first connecting column 301 can be achieved, so that the recovery of the rotation center of the acetabular cup under different osteotomy conditions can be achieved, and the pelvic prosthesis 100 has the characteristics of strong universality, high utilization rate, easiness in mass production and the like, and the preparation cost of the pelvic prosthesis 100 is significantly reduced.
In this embodiment, a series of connecting mechanisms 3 with a plate member length of 0-100mm and a second connecting column 302 length of 0-50mm can be prepared, and the user can select the corresponding connecting mechanism 3 according to the desired osteotomy condition in the operation to be required when the pelvic prosthesis 100 is installed.
Referring to fig. 4, the first connection post 301 of the present embodiment is provided with a first reinforcing post 312 capable of being received in the inner cavity of the mounting post 102, the adjacent surfaces of the first connection post and the mounting post 102 are provided with a first tooth slot 311 engaged with each other, and the axial directions of the first connection post 301 and the mounting post 102 are provided with a through hole or a threaded hole capable of passing through a screw and used for mounting the first connection post 301 on the mounting post 102. The connecting area between the first connecting column 301 and the mounting column 102 can be increased by arranging the first reinforcing column 312 on the first connecting column 301, the screw penetrates through the first connecting column 301 and is mounted on the mounting column 102, the mounting strength of the connecting mechanism 3 on the pelvic support 1 is enhanced, the first tooth grooves 311 on the adjacent surfaces of the first connecting column 301 and the mounting column 102 are arranged, the mutual occlusion of the first tooth grooves 311 can be realized after the angle between the first connecting column 301 and the mounting column 102 is adjusted, and the fixing effect on the rotating angle of the first connecting column 301 is further realized.
In this embodiment, with reference to fig. 3, the acetabular cup 2 includes an acetabular cup body 201 and a third reinforcing column 202 connected to the acetabular cup body 201 and capable of being accommodated in an inner cavity of the second connecting column 302, a third tooth socket 321 engaged with each other is disposed on mutually adjacent surfaces of the second connecting column 302 and the acetabular cup body, a through hole or a threaded hole capable of passing through a screw and used for mounting the acetabular cup 2 on the second connecting column 302 is axially disposed on the second connecting column 302, and a third tooth socket disposed on mutually adjacent surfaces of the second connecting column and the acetabular cup and circumferentially disposed around the through hole or the threaded hole. Set up the third reinforced column on the acetabular cup and link to each other with the second spliced pole, can cross reinforcing acetabular cup and coupling mechanism's area of connection, install acetabular cup 2 on second spliced pole 302 at the screw, can guarantee the joint strength of acetabular cup 2 on coupling mechanism 3, through setting up third tooth's socket 321 on the mutual neighbour face of second spliced pole 302 and acetabular cup 2, can be after the angle of adjustment second spliced pole 302 and acetabular cup 2 through the mutual interlock of third tooth's socket 321, make can not use the screw to rotate as the axle again between second spliced pole and the acetabular cup, make the well-connected artificial body sound construction, indeformable.
The pelvic prosthesis 100 in this embodiment is suitable for the cooperation between the pelvic prosthesis 100 and the osteotomy position in any osteotomy condition, and can achieve the recovery of the acetabular rotation center, thereby fundamentally increasing the applicability of the pelvic prosthesis 100.
In another embodiment, referring to fig. 5 and 6, the pelvic support 1 includes a pelvic holder 101 and a mounting plate 103 vertically connected to the bottom of the pelvic holder 101, and a second reinforcing column 104 is vertically disposed on the mounting plate and can be received in the inner cavity of the first connecting column 301, so as to increase the connecting area between the pelvic support 1 and the connecting mechanism 2, and to enhance the connecting strength therebetween. The pelvic prosthesis 100 in this embodiment is suitable for restoring the rotation center of the acetabulum, and is particularly suitable for the condition that the rotation center of the acetabulum is deviated from the normal position.
In this embodiment, the supporting arm 303 includes a first plate 331 vertically connected to the axial direction of the first connecting column 301 and a second plate 332 connected to the first plate 331 and vertically connected to the axial direction of the second connecting column 302. The connection mechanism 3 of the present embodiment can adjust the angle between the first connection post 301 and the mounting plate 103 according to the osteotomy condition of the patient, and can adjust the position of the acetabular cup 2 in the vertical direction, the position of the acetabular cup in the horizontal direction, and the abduction angle; the anteversion angle of the acetabular cup 2 can be adjusted by adjusting the angle between the second connecting column 302 and the acetabular cup 2; by replacing the connecting mechanism 3 having the first plate member 331 and the second plate member 332 of different sizes, the position of the acetabular cup 2 in the front-rear direction, the position of the acetabular cup in the left-right direction, and the position of the acetabular cup in the up-down direction can be adjusted. Compared with the gear type half pelvic structure in the prior art, the pelvic prosthesis can adjust any position of the acetabular cup outside a circular rotation track, and further can restore the rotation center of the acetabular cup 2 under any condition that the rotation center of the acetabular cup is separated from a normal position, and the pelvic prosthesis has the advantages of being high in universality, high in utilization rate, easy to produce in quantity and the like, remarkably reduces the preparation cost of the pelvic prosthesis 100, and is beneficial to reducing the economic burden of a patient.
In this embodiment, an included angle between the first plate body 331 and the second plate body 332 is 60 ° to 120 °, and preferably, an included angle between the first plate body 331 and the second plate body 332 is 90 °. In this embodiment, the second plate 332 may extend toward the back of the pelvic support 1 as shown in fig. 2, or may extend toward the opposite direction of the pelvic support 1, depending on the actual osteotomy condition of the patient and the condition that the rotation center of the acetabulum is deviated from the normal position. The 90-degree included angle design of the first plate body 331 and the second plate body 332 can enhance the connection strength between the first plate body 331 and the second plate body 332, thereby ensuring the stability of the interconnection of the pelvic support 1 and the acetabular cup 2 after the pelvic prosthesis 100 is installed.
In this embodiment, a series of connecting mechanisms 3 with the length of the first plate body 331 being between 0mm and 50mm and the length of the second plate body 332 being between 0mm and 50mm can be prepared, and the corresponding connecting mechanisms 3 can be selected according to the desired osteotomy condition to be required when the pelvic prosthesis 100 is installed.
The adjacent surfaces of the first connecting column 301 and the mounting plate 103 are provided with second tooth sockets 313 engaged with each other, and the axial direction of the first connecting column 301 is provided with a through hole or a threaded hole which can be penetrated by a screw and is used for mounting the first connecting column 301 on the mounting plate 103. Install first spliced pole 301 on mounting panel 103 through the screw, can guarantee the installation intensity of coupling mechanism 3 on pelvic support 1, through setting up second tooth's socket 313 on the mutual proximal surface of first spliced pole 301 and mounting panel 103, can pass through the interlock of second tooth's socket 313 after the angle of adjustment first spliced pole 301 and mounting panel 103, and then play the fixed action of first spliced pole 301 rotation angle.
In this embodiment, with reference to fig. 6, the acetabular cup 2 includes an acetabular cup body 201 and a third reinforcing column 202 connected to the acetabular cup body 201 and capable of being accommodated in an inner cavity of the second connecting column 302, a third tooth socket 321 engaged with each other is disposed on a surface of the second connecting column 302, which is adjacent to the acetabular cup body, a through hole or a threaded hole capable of passing through a screw and used for mounting the acetabular cup 2 on the second connecting column 302, and a third tooth socket 321 disposed on a surface of the second connecting column 302, which is adjacent to the acetabular cup 2, and circumferentially disposed around the through hole or the threaded hole. Install acetabular cup 2 on second spliced pole 302 through the screw, can guarantee the joint strength of acetabular cup 2 on coupling mechanism 3, through setting up third tooth's socket 321 on the second spliced pole 302 and acetabular cup 2's the adjacent surface each other, can be through the mutual interlock of third tooth's socket 321 behind the angle of adjustment second spliced pole 302 and acetabular cup 2, make between second spliced pole and the acetabular cup can not use the screw to rotate as the axle again, make the good artificial prosthesis structure of being connected firm, indeformable.
In the description of the above embodiments, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. The pelvis prosthesis comprises a pelvis support and an acetabular cup and is characterized by further comprising a connecting mechanism which is detachably arranged on the pelvis support and is used for connecting the acetabular cup;
the connecting mechanism comprises a first connecting column arranged on the pelvic support, a second connecting column arranged on the acetabular cup and a supporting arm used for connecting the first connecting column and the second connecting column;
the support arm is configured to restore the center of rotation of the acetabulum by adjusting the angle of the first connection post to the pelvic support and the angle of the second connection post to the acetabular cup.
2. The pelvic prosthesis of claim 1, wherein the support arms are connected perpendicular to an axial direction of the first connection post and an axial direction of the second connection post, respectively.
3. The pelvic prosthesis of claim 2, wherein the pelvic support comprises a pelvic fixation base and a mounting post connected perpendicular to a bottom of the pelvic fixation base for connection to the first connecting post, the first connecting post being coaxial with the mounting post.
4. The pelvic prosthesis of claim 3, wherein the support arm is a plate member connecting the first and second connection posts; the first connecting column is parallel to the second connecting column in the axial direction.
5. The pelvic prosthesis of claim 3, wherein the first connection post is provided with a first reinforcement post receivable in an inner cavity of the mounting post, mutually adjacent surfaces of the first connection post and the mounting post are provided with mutually engaging first tooth grooves, and the first connection post and the mounting post are axially provided with through holes or threaded holes capable of being threaded through screws for mounting the first connection post to the mounting post.
6. The pelvic prosthesis of claim 2, wherein the pelvic support comprises a pelvic anchor and a mounting plate vertically connected to a bottom of the pelvic anchor, the mounting plate having a second reinforcement post vertically disposed thereon that is receivable in an inner cavity of the first connection post.
7. The pelvic prosthesis of claim 6, wherein the support arm includes a first plate connected to the first connection post at an axial perpendicular angle and a second plate connected to the first plate and connected to the second connection post at an axial perpendicular angle.
8. The pelvic prosthesis of claim 7, wherein the first plate is angled from the second plate by an angle of 60 ° -120 °.
9. Pelvic prosthesis according to claim 6, characterized in that the mutually adjacent faces of the first connecting post and the mounting plate are provided with mutually engaging second tooth grooves, the first connecting post being axially provided with a through-hole or threaded hole for the mounting of the first connecting post on the mounting plate, through which a screw can be passed.
10. The pelvic prosthesis of claim 1, wherein the acetabular cup comprises an acetabular cup body and a third reinforcing column connected with the acetabular cup body and receivable in an inner cavity of the second connecting column, wherein mutually-engaged third tooth grooves are formed on mutually-adjacent surfaces of the second connecting column and the acetabular cup body, and the second connecting column is axially provided with a through hole or a threaded hole capable of being penetrated by a screw and used for mounting the acetabular cup on the second connecting column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910901325.XA CN110664516A (en) | 2019-09-23 | 2019-09-23 | Pelvis prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910901325.XA CN110664516A (en) | 2019-09-23 | 2019-09-23 | Pelvis prosthesis |
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| Publication Number | Publication Date |
|---|---|
| CN110664516A true CN110664516A (en) | 2020-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910901325.XA Pending CN110664516A (en) | 2019-09-23 | 2019-09-23 | Pelvis prosthesis |
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| CN (1) | CN110664516A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112869917A (en) * | 2020-12-30 | 2021-06-01 | 北京中安泰华科技有限公司 | Double-acting full acetabulum printed by 3D |
| CN112998913A (en) * | 2021-02-22 | 2021-06-22 | 北京市春立正达医疗器械股份有限公司 | Acetabular revision mug |
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