CN111603272A - Personalized assembled semi-pelvic prosthesis - Google Patents
Personalized assembled semi-pelvic prosthesis Download PDFInfo
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- CN111603272A CN111603272A CN202010470416.5A CN202010470416A CN111603272A CN 111603272 A CN111603272 A CN 111603272A CN 202010470416 A CN202010470416 A CN 202010470416A CN 111603272 A CN111603272 A CN 111603272A
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- 210000004197 pelvis Anatomy 0.000 claims abstract description 21
- 210000003689 pubic bone Anatomy 0.000 claims abstract description 20
- 239000004568 cement Substances 0.000 claims description 17
- -1 polyethylene structure Polymers 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 2
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 210000003692 ilium Anatomy 0.000 description 14
- 210000003131 sacroiliac joint Anatomy 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 4
- 230000001054 cortical effect Effects 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 210000000588 acetabulum Anatomy 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000002639 bone cement Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 108010048734 sclerotin Proteins 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 210000001519 tissue Anatomy 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
- A61F2/30721—Accessories
- A61F2/30749—Fixation appliances for connecting prostheses to the body
-
- 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
- A61F2/34—Acetabular cups
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
- A61F2002/30528—Means for limiting said movement
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
- A61F2002/30649—Ball-and-socket joints
- A61F2002/30662—Ball-and-socket joints with rotation-limiting means
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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 the technical field of medical instruments, and provides a personalized combined semi-pelvic prosthesis. The method comprises the following steps: the method comprises the following steps: the individual pelvis support is assembled with the acetabular cup, the fixing bolt and the pubis plate; the personalized pelvic support is provided with a plurality of personalized nail holes, a plurality of through holes and two universal nail thread holes, an inner taper hole and an inner thread structure are arranged inside the middle cylindrical part of the personalized pelvic support, and the tail end of the middle cylindrical part of the personalized pelvic support is provided with a first anti-rotation tooth structure; the assembled acetabular cup is provided with an outer cone and a pubic plate fixing hole, an inner hole is formed in the outer cone, and the assembled acetabular cup is further provided with a second anti-rotation tooth structure or a third anti-rotation tooth structure. The invention has the beneficial effects that: the individualized pelvis support is connected with the assembled acetabular cup through the cone matching structure, is locked by the fixing bolt and is prevented from rotating by the tooth-shaped structure at the interface, so that the purpose of adjusting the angle of the assembled acetabular cup is achieved, and the anti-rotation effect is realized.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a personalized combined hemipelvic prosthesis.
Background
Prior art CN2017108039234 discloses an ilium growing-in combined type fixed semi-pelvic prosthesis, which comprises an ilium fixing component, an ilium fixing component ilium fixing lateral wing, an ilium fixing platform and a taper connecting column, wherein the ilium fixing lateral wing and the ilium fixing platform are integrally connected to form an L-shaped structure; a plurality of locking cortical screw holes and sacroiliac joint screw holes are formed on the ilium fixing side wings, cortical screws are locked on the inner and outer cortical bone of the ilium through the locking cortical screw holes, and sacroiliac joint screws are locked on the sacroiliac joint through the sacroiliac joint screw holes; the conical connection column is cylindrical, the upper end of the conical connection column is integrally connected to the lower part of the ilium fixing platform, and the lower end of the conical connection column is provided with a conical connection groove; the artificial mortar cup is connected with the lower part of the cone connecting column in a conical manner.
Another prior art CN2012201827840 discloses a hemipelvic prosthesis comprising an iliac fixture, an acetabular prosthesis, a pubic bone connector. The ilium mounting is used for being connected fixedly with remaining ilium wing, and the pubis connecting piece is used for being connected fixedly with the remaining pubis of homonymy or offside pubis, is connected by taking tapering anti-rotation bayonet between ilium mounting and the acetabular bone prosthesis, and acetabular bone prosthesis passes through screw fixed connection with the pubis connecting piece.
However, the semi-pelvic prostheses of the prior art still have the following drawbacks: (1) the hemi-pelvic prosthesis does not have a pubic connection assembly, so that the acetabular cup is suspended in the air, and the stability is poor; (2) although the hemipelvic prosthesis has a pubic bone connector, the mortar cup is only of a cement type and has limited mobility; (3) the taper locking and anti-rotation flat position of the semi-pelvic prosthesis can lock the prosthesis axially and circumferentially, but the angle of the mortar cup cannot be adjusted; (4) the semi-pelvic prosthesis is large, heavy and not portable; (5) the hemi-pelvic prosthesis has no curved bar fixation system, initial stabilization of the prosthesis and poor force transmission.
Disclosure of Invention
The invention aims to provide a personalized combined semi-pelvic prosthesis, which aims to solve the technical problems in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: a personalized gang hemi-pelvic prosthesis comprising: the individual pelvis support is assembled with the acetabular cup, the fixing bolt and the pubis plate; the personalized pelvic support is provided with a plurality of personalized nail holes, a plurality of through holes and two universal nail thread holes, an inner taper hole and an inner thread structure are arranged inside the middle cylindrical part of the personalized pelvic support, and the tail end of the middle cylindrical part of the personalized pelvic support is provided with a first anti-rotation tooth structure; the assembled acetabular cup is provided with an outer cone and a pubic plate fixing hole, an inner hole is formed in the outer cone, and the assembled acetabular cup is further provided with a second anti-rotation tooth structure or a third anti-rotation tooth structure; the inner taper hole is matched with the outer taper, the first anti-rotation tooth structure is matched with the second anti-rotation tooth structure or the third anti-rotation tooth structure to adjust the relative angle between the personalized pelvis support and the assembled acetabular cup and prevent the personalized pelvis support and the assembled acetabular cup from rotating relative to each other, and the fixing bolt penetrates through the inner hole and is screwed with the internal thread structure to connect the personalized pelvis support and the assembled acetabular cup.
In an optional embodiment, the assembled acetabular cup is of a cement type, and a second anti-rotation tooth structure is arranged on the cement type assembled acetabular cup; the inner part of the cement type assembled acetabular cup is provided with a plurality of grooves, a plurality of vent holes and a plurality of pubic plate fixing holes I.
In an optional embodiment, the assembled acetabular cup is a double-acting type, and a third anti-rotation tooth structure is arranged on the double-acting type assembled acetabular cup; two pubis plate fixing holes II which are positioned at fixed angles are arranged in the double-acting assembled acetabular cup.
In an optional embodiment, the pubis plate is provided with two first connecting holes and a plurality of second connecting holes, the two first connecting holes are connected with the pubis plate fixing holes through small nuts and small bolts, and screws are selectively placed in the second connecting holes.
In an alternative embodiment, the first anti-rotation tooth structure, the second anti-rotation tooth structure and the anti-rotation tooth structure are triangular teeth or trapezoidal teeth, and the tooth pitch of the trapezoidal teeth is 15-30 °.
In an optional embodiment, two universal lock nails are connected in the universal screw thread holes and comprise screw plugs, inner pads, U-shaped sleeves and lock nails which are matched for use.
In an alternative embodiment, a plurality of the personalized nail holes are provided with screws.
In an alternative embodiment, cement is placed inside the assembled acetabular cup of the cement type, and a high cross-linked polyethylene lining is bonded.
In an alternative embodiment, the inner surface of the assembled acetabular cup of the double acting type is smooth, and the lining of the assembled acetabular cup of the double acting type is a polyethylene spherical structure for placing a metal ball head.
In an optional embodiment, the personalized pelvic support is designed according to different shapes of the sacroiliac ear surfaces of different patients, and the support wing structure of the personalized pelvic support is supported on the lower edge of the sacral ear surfaces by considering the stress angle and direction of a human body.
The invention has the beneficial effects that:
(1) the individualized pelvis support is individualized according to different shapes of the sacroiliac joint ear surfaces of different patients, and the support wing structure of the individualized pelvis support is mainly used for supporting the lower edge of the sacrum ear surface by considering the stress angle and direction of a human body and the force decomposition after the prosthesis is installed. The wing supporting structure can bear the downward force of the trunk above the sacrum, and the parts of the wing supporting structure, which are attached to the ear-shaped surfaces, form a buckle structure together, so that the stress is concentrated on the prosthesis, the shearing force received by the screw is dispersed, the screw plays a role in connection, the risk of screw fracture is reduced, and the safety and reliability of the prosthesis are ensured.
(2) The individualized pelvis support is connected with the assembled acetabular cup through the cone matching structure, is locked by the fixing bolt and is prevented from rotating by the tooth-shaped structure, so that the purpose of adjusting the angle of the assembled acetabular cup is achieved, and the anti-rotation effect is realized; meanwhile, the fixing bolt can prevent the phenomenon that the personalized pelvis support and the assembled acetabular cup are separated when being pulled possibly.
(3) The personalized assembled semi-pelvic prosthesis has the advantages of small structure and light weight, and the personalized assembled semi-pelvic prosthesis does not have too many other parts except the anatomical fit structure, so that the purpose of light weight is achieved.
(4) The personalized pelvis support is provided with universal locking screw thread holes, so that the pelvis support has the capability of a screw rod system, and the screw rod system connects the lumbar vertebra with the personalized assembled semi-pelvis prosthesis through a bent rod, thereby realizing better initial stability, medium-long term stability and good force transmission capability.
(5) According to the invention, the personalized assembled semi-pelvic prosthesis is connected with the pubic lamina, so that the assembled acetabular cup is not suspended and has strong stability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of a personalized assembled hemi-pelvic prosthesis according to an embodiment of the present invention.
Fig. 2 is a first schematic structural diagram of a personalized pelvic support according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a personalized pelvic support according to an embodiment of the invention.
FIG. 4 is a schematic view of a cement-type assembled acetabular cup according to an embodiment of the invention.
FIG. 5 is a schematic view of a double action type assembled acetabular cup according to an embodiment of the invention.
Fig. 6 is a schematic structural diagram of a fixing bolt according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a small bolt nut according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of a pubic plate structure according to an embodiment of the present invention.
Fig. 9 is a schematic structural view of a universal nail according to an embodiment of the present invention.
Wherein, the reference numbers in the figures are: 1. the bone plate comprises personalized nail holes, 2, through holes, 3, a personalized pelvic support, 4, fixing bolts, 5, a matched acetabular cup, 6, a pubic plate, 7, small nuts, 8, small bolts, 9, universal nail threaded holes, 10, a first anti-rotation tooth structure, 11, an internal thread structure, 12, an internal taper hole, 13, a second anti-rotation tooth structure, 14, a first pubic plate fixing hole, 15, a groove, 16, a second pubic plate fixing hole, 17, a third rotating tooth structure, 18, an external taper, 19, an internal hole, 20, a first connecting hole, 21, a second connecting hole, 22, a plug screw, 23, an internal cushion, 24, a U-shaped sleeve, 25 and a locking nail.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
Referring to fig. 1-9, the present embodiment provides a customized assembled hemi-pelvic prosthesis, comprising: personalized pelvic support 3, assembled acetabular cup 5, fixing bolt 4 and pubic plate 6.
The personalized pelvic support 3 is designed according to different shapes of the sacroiliac joint ear surfaces of different patients through customized design and 3D printing, the wing support structure of the personalized pelvic support 3 is structurally designed mainly by considering the stress angle and direction of a human body and the decomposition of force after the semi-pelvic prosthesis is installed, the personalized pelvic support is supported at the lower edge of the sacrum ear surface, and the personalized pelvic support is designed leftwards and rightwards according to the requirements of different sides.
Specifically, the personalized pelvis support 3 is provided with a plurality of personalized nail holes 1, a plurality of through holes 2 and two universal screw thread holes 9. The individualized nail holes 1 are provided with screws, and the wing supporting structure of the individualized pelvis support 3 can bear the downward force of the trunk above the sacrum and form a buckle structure with the part attached to the ear-shaped surface, so that the stress is concentrated on the semi-pelvis prosthesis, the shearing force received by the screws is dispersed, the screws can play the connection role, the risk of screw fracture is reduced, and the safety and reliability of the semi-pelvis prosthesis are ensured. Meanwhile, the screw enters the designated area of the sacrum, which not only increases the stability of the initial fixation, but also does not damage the nerves of the sacrum. The regular through holes 2 partially imitate the function of the removed ilium, and the through holes 2 have the effects of reducing weight, fixing by suturing and promoting the through growth of internal and external tissues.
It should be noted that the personalized pelvic support 3 is provided with a locking nail system, two universal locking nails are connected in two universal screw thread holes 9 in the locking nail system, the universal locking nails comprise a screw plug 22, an inner cushion 23, a U-shaped sleeve 24 and a locking nail 25 which are matched for use, preferably, the locking nail 25 is usually provided with 1-2 pieces, and the locking nail is selectively used according to the specific situation of a patient in the operation. The universal locking nail is selected for standby in the doctor operation, and the cylindrical section with threads on the locking nail 25 is matched with the universal nail threaded hole 9 on the personalized pelvic support 3. The round hole part on the locking nail system assembly is penetrated by a bent rod (a straight rod is bent as the case is in the operation), the bent rod structure is pressed through the thread matching of a screw plug 22 and a U-shaped sleeve 24, the bent rod is bent according to the actual condition of a patient and is fixed on a vertebral body through a U-shaped nail of a spinal system. The fixation and force transmission of the lumbar and hemi-pelvic prostheses can be established by a curved rod system, whether or not the curved rod system is used depending on the case of the clinician, which is not necessarily applicable to every patient, but which has a system configuration that works well for stress and initial stability of the prosthesis.
In this embodiment, the personalized pelvic support 3 is provided with an inner taper hole 12 and an inner thread structure 11 inside the middle cylindrical portion, and the end of the middle cylindrical portion of the personalized pelvic support 3 is provided with a first anti-rotation tooth structure 10. The assembled acetabular cup 5 is provided with an outer cone 18 and a pubic plate fixing hole. It should be noted that the inner bore 19 is arranged inside the outer cone 18, the inner cone bore 12 is matched with the outer cone 18, the fixing bolt 4 passes through the inner bore 19 and is screwed with the internal thread structure 11 to connect the personalized pelvic support 3 and the assembled acetabular cup 5, and the fixing bolt 4 is made of forged titanium alloy material. The taper fitting structure is usually used under the condition of pressure, can ensure that the acetabulum is not dislocated, and the fixing bolt 4 has a simple structure, mainly plays a role in connecting and assembling the acetabulum 5 and the personalized pelvis support 3, and prevents the two parts from being dislocated when tension is possibly generated.
Specifically, the pubis plate 6 is provided with two connecting holes I20 and a plurality of connecting holes II 21, the two connecting holes I21 are connected with the pubis plate fixing hole through a small nut 7 and a small bolt 8, and screws are selectively placed in the connecting holes II 21. Pubic plate 6 is used for connecting and assembling acetabulum and contralateral pubic ramus, and the selective use, and the clinician decides whether to choose for use according to each case particular case. The pubis plate 6 has a plurality of specifications, two connecting holes I20 on the left side are used for connecting the small bolts 8 and the assembled acetabular cup 5, and a plurality of connecting holes II 21 on the right side are used for selectively placing screws in the operation. Pubis 6 connection structure one end of pubis board is connected to on the mortar cup, and remaining structure is connected to and is fixed on the contralateral pubis, and pubis board 6 can bend in the art and handle for the appearance is close sclerotin surface curvature.
In the embodiment, the assembled acetabular cup 5 is of a cement type, and a second anti-rotation tooth structure 13 is arranged on the cement type assembled acetabular cup 5; the cement type assembled acetabular cup 5 is internally provided with a plurality of grooves 15, a plurality of vent holes and a plurality of pubic bone plate fixing holes 14, cement is placed inside the cement type assembled acetabular cup 5 and is bonded with a high-crosslinking polyethylene lining, and the multi-groove 15 is designed to enable the bone cement to have firm grasping capability after being placed inside, so that the cement type lining and the acetabular cup are bonded and fixed.
In an optional embodiment, the assembled acetabular cup 5 is a double-acting type, and a third anti-rotation tooth structure 17 is arranged on the double-acting type assembled acetabular cup 5; the inside of the double-acting type assembled acetabular cup 5 is provided with two pubic plate fixing holes 16 which form a fixed angle at the position. The double-acting mortar cup has smooth inner surface, and the polyethylene lining is placed in a spherical structure, wherein the polyethylene lining is also internally in a spherical structure, and the metal ball head is placed.
It is worth mentioning that the first anti-rotation tooth structure 10 cooperates with the second anti-rotation tooth structure 13 or the third anti-rotation tooth structure 17 to adjust the relative angle between the customized pelvis support 3 and the assembled acetabular cup 5, so as to prevent the customized pelvis support 3 and the assembled acetabular cup 5 from rotating relative to each other. The first anti-rotation tooth structure 10, the second anti-rotation tooth structure 13 and the anti-rotation tooth structure 17 are triangular teeth or trapezoidal teeth, and the tooth spacing of the trapezoidal teeth is 15-30 degrees. The rotation is prevented by the tooth-shaped structure, so that the purpose of adjusting the angle of the assembled acetabular cup 5 is achieved, and the effect of rotation resistance is achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A personalized gang hemi-pelvic prosthesis comprising: the individual pelvis support (3), the assembled acetabular cup (5), the fixing bolt (4) and the pubic plate (6);
the personalized pelvic support (3) is provided with a plurality of personalized nail holes (1), a plurality of through holes (2) and two universal nail threaded holes (9), an inner taper hole (12) and an internal thread structure (11) are arranged inside the middle cylindrical part of the personalized pelvic support (3), and the tail end of the middle cylindrical part of the personalized pelvic support (3) is provided with a first anti-rotation tooth structure;
the assembled acetabular cup (5) is provided with an outer cone (18) and a pubic plate fixing hole, an inner hole (19) is formed in the outer cone (18), and the assembled acetabular cup (5) is further provided with a second anti-rotation tooth structure or a third anti-rotation tooth structure;
the method is characterized in that: the inner taper hole (12) is matched with the outer taper (18), the first anti-rotation tooth structure is matched with the second anti-rotation tooth structure or the third anti-rotation tooth structure to adjust the relative angle between the personalized pelvis support (3) and the assembled acetabular cup (5) and prevent the personalized pelvis support (3) and the assembled acetabular cup (5) from rotating relatively, and the fixing bolt (4) penetrates through the inner hole (19) and is screwed with the internal thread structure (11) to connect the personalized pelvis support (3) and the assembled acetabular cup (5).
2. The personalized assembled hemi-pelvic prosthesis according to claim 1, characterized in that the assembled acetabular cup (5) is of the cement type, the assembled acetabular cup (5) of the cement type being provided with a second anti-rotation toothing (13); the inner part of the cement type assembled acetabular cup (5) is provided with a plurality of grooves (15), a plurality of vent holes and a plurality of pubic plate fixing holes I (14).
3. The personalized assembled hemi-pelvic prosthesis according to claim 1, characterized in that the assembled acetabular cup (5) is of the double acting type, the assembled acetabular cup (5) of the double acting type being provided with an anti-rotation tooth structure three (17); two pubis plate fixing holes (16) which are positioned at fixed angles are arranged inside the double-acting assembled acetabular cup (5).
4. The personalized hemipelvic prosthesis according to claim 1, wherein the pubic plate (6) is provided with two first connecting holes (20) and a plurality of second connecting holes (21), the two first connecting holes (21) are connected with the pubic plate fixing holes through small nuts (7) and small bolts (8), and screws are selectively placed in the plurality of second connecting holes (21).
5. The personalized half pelvic prosthesis of claim 1, wherein the first anti-rotation tooth structure, the second anti-rotation tooth structure, and the anti-rotation tooth structure are triangular teeth or trapezoidal teeth having a tooth spacing of between 15-30 °.
6. The personalized hemipelvic prosthesis according to claim 1, characterized in that two gimbaled locking pegs are connected in the two gimbaled threaded holes (9), said gimbaled locking pegs comprising cooperating screw plugs (22), inner pads (23), U-shaped sleeves (24) and locking pegs (25).
7. The personalized assembled hemi-pelvic prosthesis according to claim 1, characterized in that a plurality of the personalized nail holes (1) have screws mounted therein.
8. The personalized assembled hemi-pelvic prosthesis according to claim 2, characterized in that the inside of the assembled acetabular cup (5) of cement type is placed with cement, adhering to a highly cross-linked polyethylene lining.
9. The personalized assembled hemi-pelvic prosthesis according to claim 3, characterized in that the inner surface of the assembled acetabular cup (5) of the double acting type is smooth, the lining of the assembled acetabular cup (5) of the double acting type being of spherical polyethylene structure, with the placement of metal bulbs.
10. The personalized hemipelvic prosthesis according to claim 1, characterized in that the personalized pelvic support (3) is designed according to different shapes of the sacroiliac ear surface of different patients, and the supporting wing structure of the personalized pelvic support (3) is supported on the lower edge of the sacral ear surface in consideration of the angle and direction of the human body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010470416.5A CN111603272A (en) | 2020-05-28 | 2020-05-28 | Personalized assembled semi-pelvic prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010470416.5A CN111603272A (en) | 2020-05-28 | 2020-05-28 | Personalized assembled semi-pelvic prosthesis |
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| CN112022446A (en) * | 2020-09-29 | 2020-12-04 | 北京市春立正达医疗器械股份有限公司 | Semi-pelvic prosthesis |
| CN112515817A (en) * | 2020-11-27 | 2021-03-19 | 北京市春立正达医疗器械股份有限公司 | Individualized matched stack sacrum ilium acetabular prosthesis |
| 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 |
| CN113081399A (en) * | 2021-03-23 | 2021-07-09 | 北京力达康科技有限公司 | Pelvis prosthesis |
| CN113367847A (en) * | 2021-05-22 | 2021-09-10 | 北京力达康科技有限公司 | Osteolysis treatment fixing prosthesis |
| CN114366395A (en) * | 2022-01-14 | 2022-04-19 | 吉林大学 | Sacrum pubis bilateral osseointegration hemi-pelvic prosthesis |
| CN114886618A (en) * | 2022-04-26 | 2022-08-12 | 吉林大学 | Bionic acetabulum reconstruction prosthesis for ilium inner plate osseointegration based on 3D printing |
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| CN112515817A (en) * | 2020-11-27 | 2021-03-19 | 北京市春立正达医疗器械股份有限公司 | Individualized matched stack sacrum ilium acetabular prosthesis |
| CN112515817B (en) * | 2020-11-27 | 2024-04-16 | 北京市春立正达医疗器械股份有限公司 | Personalized assembled sacrum ilium acetabular prosthesis |
| 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 |
| CN113081399A (en) * | 2021-03-23 | 2021-07-09 | 北京力达康科技有限公司 | Pelvis prosthesis |
| CN113367847A (en) * | 2021-05-22 | 2021-09-10 | 北京力达康科技有限公司 | Osteolysis treatment fixing prosthesis |
| CN113367847B (en) * | 2021-05-22 | 2022-06-10 | 北京力达康科技有限公司 | Osteolysis treatment fixing prosthesis |
| CN114366395A (en) * | 2022-01-14 | 2022-04-19 | 吉林大学 | Sacrum pubis bilateral osseointegration hemi-pelvic prosthesis |
| CN114886618A (en) * | 2022-04-26 | 2022-08-12 | 吉林大学 | Bionic acetabulum reconstruction prosthesis for ilium inner plate osseointegration based on 3D printing |
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