CN107951599B - Femoral stem prosthesis assembly - Google Patents
Femoral stem prosthesis assembly Download PDFInfo
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- CN107951599B CN107951599B CN201711082953.7A CN201711082953A CN107951599B CN 107951599 B CN107951599 B CN 107951599B CN 201711082953 A CN201711082953 A CN 201711082953A CN 107951599 B CN107951599 B CN 107951599B
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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
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
-
- 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
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
- A61F2/3676—Distal or diaphyseal parts of shafts
-
- 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
- A61F2/30723—Plugs or restrictors for sealing a cement-receiving space
-
- 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
- A61F2/30724—Spacers for centering an implant in a bone cavity, e.g. in a cement-receiving cavity
-
- 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
- A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/3094—Designing or manufacturing processes
- A61F2002/30985—Designing or manufacturing processes using three dimensional printing [3DP]
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- 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 provides a femoral stem prosthesis assembly comprising: a sandwich prosthesis for fitting into a medullary cavity, the sandwich prosthesis comprising: the bone-bonding device comprises a cylindrical base body and a first connecting part, wherein the cylindrical base body is provided with an inner cavity, the first connecting part is arranged in the inner cavity, and a bone-bonding layer is formed on the outer surface of the cylindrical base body; the femoral stem prosthesis is arranged in the inner cavity in a penetrating mode, the femoral stem prosthesis is provided with a second connecting portion, and the interlayer prosthesis and the femoral stem prosthesis are detachably connected together through the matching of the first connecting portion and the second connecting portion. The technical scheme of the invention effectively solves the problem that the original bone mass is damaged in the secondary revision surgery in the prior art.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a femoral stem prosthesis component.
Background
The femoral stem prosthesis is an implant applied to the current orthopedic hip joint replacement, is suitable for repairing and reconstructing hip joint diseases of human bodies, and usually forms a set of hip joint prosthesis together with an acetabular outer cup and an acetabular inner liner of a femoral head prosthesis after being implanted so as to form final joint movement.
The femoral stem prosthesis fixing mode is generally a biological type and a bone cement type, wherein the biological type outer surface of the femoral stem prosthesis is attached to bone of a femoral medullary cavity to form a bone interface; the bone cement type femoral stem is inserted into the medullary cavity filled with bone cement, and the bone cement femoral stem attached with the bone cement type femoral stem sinks for two times or even sinks for multiple times in a certain time along with the solidification of the bone cement, so that a stable effect is formed.
Generally speaking, cement-based implants achieve a faster initial stabilization effect, shortening the recovery period of the patient. But the condition of secondary renovation can occur, such as the conditions of looseness, cracking of the handle neck, excessive sinking of the handle body and the like generated after a period of operation. Therefore, the prosthesis is inevitably replaced in the repair operation, the residual bone cement is removed at the same time, the bone cement in the period is very hard, a considerable part of autologous bone mass is usually removed in the removal process, and the secondary repair is really secondary damage to the originally poor bone due to the fact that the bone cement type is suitable for the primary replacement of osteoporosis and old people with poor bone conditions.
Disclosure of Invention
The invention aims to provide a femoral stem prosthesis component to solve the problem that the original bone mass is damaged in a secondary revision operation in the prior art.
In order to achieve the above object, the present invention provides a femoral stem prosthesis assembly comprising: a sandwich prosthesis for fitting into a medullary cavity, the sandwich prosthesis comprising: the bone-bonding device comprises a cylindrical base body and a first connecting part, wherein the cylindrical base body is provided with an inner cavity, the first connecting part is arranged in the inner cavity, and a bone-bonding layer is formed on the outer surface of the cylindrical base body; the femoral stem prosthesis is arranged in the inner cavity in a penetrating mode, the femoral stem prosthesis is provided with a second connecting portion, and the interlayer prosthesis and the femoral stem prosthesis are detachably connected together through the matching of the first connecting portion and the second connecting portion.
Further, first connecting portion are the screw hole of setting in the bottom of inner chamber, and the through-hole of second connecting portion for setting up in femoral stem prosthesis inside, femoral stem prosthesis subassembly still including wear to establish in the through-hole and with screw hole complex fastener, the first end of fastener be provided with screw hole complex external screw thread.
Further, the through hole is a stepped hole, the stepped hole comprises a first through hole section with a large diameter and a second through hole section with a small diameter, a stepped surface is formed at the joint of the first through hole section and the second through hole section, a bolt head matched with the stepped surface is arranged at the second end of the fastener, and an operation hole is formed in the surface of the bolt head.
Furthermore, the femoral stem prosthesis component also comprises a jackscrew plug which is connected in the first through hole section and is positioned at one end, far away from the threaded hole, of the fastener.
Further, the jackscrew plug is in threaded fit with the first through hole section.
Further, the tubular base body is made of a metal material.
Further, the bone-joining layer is a trabecular structure layer.
Further, the trabecular bone structure layer is made by 3D printing.
Further, the sandwich prosthesis further comprises: and the fixed sharp thorns are arranged on the circumferential outer surface of the cylindrical base body and extend in a gradually contracting manner from inside to outside.
Further, the sandwich prosthesis further comprises: and the plug is arranged at one end of the cylindrical base body far away from the opening of the cylindrical base body.
By applying the technical scheme of the invention, the femoral stem prosthesis component comprises a sandwich prosthesis and a femoral stem prosthesis which are detachably connected together. The sandwich prosthesis and femoral stem prosthesis are assembled together prior to implantation within the medullary canal of a patient. The sandwich prosthesis and the femoral stem prosthesis are connected together through the matching of the first connecting part and the second connecting part. The assembled femoral stem prosthesis component has the same shape as the existing femoral stem prosthesis, and the shape of the component is matched with the femoral medullary cavity. The invention utilizes the bone bonding layer formed on the outer surface of the cylindrical matrix to bond with the bone of a patient to form biological fixation. When the femoral stem prosthesis component is applied to secondary repair, the interlayer prosthesis is combined with the bone of a patient through the bone combination layer to form the biological fixing layer, so that the interlayer prosthesis is separated from the femoral stem prosthesis, the interlayer prosthesis is reserved, and only the femoral stem prosthesis is taken out, so that the bone in the medullary cavity can be protected, the bone cannot be damaged, and the operation reserves good bone and good matched effect. After the femoral stem prosthesis is taken out, the cavity in the interlayer prosthesis is exposed, and a new femoral stem prosthesis is arranged at the moment. Therefore, the technical scheme of the invention can solve the problem that the original bone mass is damaged in the secondary revision surgery in the prior art. According to the technical scheme, the revision surgery is easily completed on the premise of not losing bone, the operation difficulty is reduced, and the surgery time is shortened.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic structural view of an embodiment of a femoral stem prosthesis assembly according to the present invention;
fig. 2 shows an enlarged schematic view at a of the femoral stem prosthesis assembly of fig. 1; and
fig. 3 shows an enlarged schematic view at B of the femoral stem prosthesis assembly of fig. 1.
Wherein the figures include the following reference numerals:
10. a sandwich prosthesis; 11. a cylindrical base; 12. a first connection portion; 13. a bone-binding layer; 20. a femoral stem prosthesis; 21. a second connecting portion; 31. a fastener; 311. a bolt head; 312. an operation hole; 32. and (4) a plug with a top thread.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1, the femoral stem prosthesis assembly of the present embodiment includes: a sandwich prosthesis 10 and a femoral stem prosthesis 20. Wherein the sandwich prosthesis 10 is intended to be fitted into the medullary cavity, the sandwich prosthesis comprising: a cylindrical base body 11 and a first connecting portion 12, the cylindrical base body 11 having a cavity, the first connecting portion 12 being provided in the cavity, and a bone-bonding layer 13 being formed on an outer surface of the cylindrical base body 11. The femoral stem prosthesis 20 is arranged in the inner cavity in a penetrating mode, the femoral stem prosthesis 20 is provided with a second connecting portion 21, and the sandwich prosthesis 10 and the femoral stem prosthesis 20 are detachably connected together through the matching of the first connecting portion 12 and the second connecting portion 21.
With the solution of the present embodiment, the femoral stem prosthesis assembly comprises a sandwich prosthesis 10 and a femoral stem prosthesis 20 detachably connected together. The sandwich prosthesis 10 and femoral stem prosthesis 20 are assembled together prior to implantation within the medullary canal of a patient. The sandwich prosthesis 10 and the femoral stem prosthesis 20 are connected together by the cooperation of the first connection portion 12 and the second connection portion 21. The assembled femoral stem prosthesis component has the same shape as the existing femoral stem prosthesis, and the shape of the component is matched with the femoral medullary cavity. This embodiment utilizes the bone-bonding layer 13 formed on the outer surface of the cylindrical base body 11 to bond with the patient's bone to form a biological fixation. By applying the femoral stem prosthesis component of the embodiment, when secondary revision occurs, the sandwich prosthesis is combined with the bone of a patient through the bone combination layer 13 to form a biological fixing layer, so that the sandwich prosthesis is separated from the femoral stem prosthesis 20, the sandwich prosthesis is reserved, and only the femoral stem prosthesis 20 is taken out, so that the bone in the medullary cavity can be protected, the bone cannot be damaged, and the good bone and the good matched effect are reserved through the operation. After the femoral stem prosthesis 20 is taken out, the cavity in the sandwich prosthesis is exposed, and then a new femoral stem prosthesis 20 is loaded. Therefore, the technical scheme of the embodiment can solve the problem that the original bone mass is damaged in the secondary revision surgery in the prior art. The technical scheme of this embodiment is under the prerequisite of not losing the sclerotin, easily accomplishes the revision operation, reduces the operation degree of difficulty simultaneously, shortens the operation time.
The new femoral stem prosthesis can be a bone cement type femoral stem, and at the moment, bone cement needs to be filled in the inner cavity during implantation, and then the bone cement type femoral stem is selected for implantation. Of course, femoral stem prostheses with a second connection may also be chosen. The type of femoral stem prosthesis can be selected according to the actual needs.
As shown in fig. 1 and fig. 3, in the technical solution of the present embodiment, the first connecting portion 12 is a threaded hole disposed at the bottom of the inner cavity, the second connecting portion 21 is a through hole disposed inside the femoral stem prosthesis 20, the femoral stem prosthesis assembly further includes a fastening member 31 disposed in the through hole and engaged with the threaded hole, and a first end of the fastening member 31 is provided with an external thread engaged with the threaded hole. The threaded hole and the external thread are easy to process, and the connection operation is simple and convenient. In this embodiment, the external threads of the fastener 31 are coupled with the threaded holes to secure the femoral stem prosthesis 20 inside the sandwich prosthesis 10. The fixing mode is simple to operate and easy to process.
As shown in fig. 2, in the present embodiment, the through hole is a stepped hole, the stepped hole includes a first through hole section with a larger diameter and a second through hole section with a smaller diameter, a stepped surface is formed at a joint of the first through hole section and the second through hole section, a second end of the fastening member 31 is provided with a bolt head 311 engaged with the stepped surface, and an operation hole 312 is provided on a surface of the bolt head 311. The bolt head 311 is provided for the fastening operation of the fastener 31 on the one hand and for fixing the femoral stem prosthesis 20 by fitting with the step face on the other hand. When the second revision is made, the femoral stem prosthesis 20 can be removed from the interior of the sandwich prosthesis 10 only by operating the above-mentioned operation holes 312 to separate the external threads of the fasteners from the threaded holes.
As shown in fig. 1 and 2, in the embodiment of the femoral stem prosthesis assembly, the femoral stem prosthesis assembly further includes a plug 32, and the plug 32 is connected in the first through hole section and located at an end of the fastening member 31 far away from the threaded hole. The plug 32 prevents the fastener 31 from loosening and thus affecting the fixation between the sandwich prosthesis and the femoral stem prosthesis 20.
Preferably, the plug wire 32 is threadably engaged with the first bore section. The thread matching processing is easy and the operation is simple.
In order to effectively protect the bone in the medullary cavity, the cylindrical base 11 needs to have a certain structural strength, and in this embodiment, the cylindrical base 11 is made of a metal material.
In the present embodiment, the bone-bonding layer 13 is a trabecular structure layer. Further, the trabecular bone structure layer is made by 3D printing. The trabecular bone structure layer can be quickly combined with bone to form a biological fixing layer.
In order to ensure the initial fixing effect of the sandwich prosthesis, the sandwich prosthesis further comprises: and the fixed sharp thorns are arranged on the circumferential outer surface of the cylindrical base body and extend in a gradually contracting manner from inside to outside. The fixing spikes can be matched with other sclerotin when the interlayer prosthesis is implanted into the medullary cavity of a patient, thereby facilitating the initial fixation.
In this embodiment, the sandwich prosthesis further comprises: and a plug provided at one end of the cylindrical base 11 remote from the opening thereof. Sometimes, the distal plug is implanted prior to implantation of the femoral stem. Implantation of the distal plug is performed by a tool. In this embodiment, a plug is provided that can be connected to the distal plug prior to implantation, resulting in a simultaneous implantation, simplifying the implantation procedure.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the femoral stem prosthesis assembly includes a sandwich prosthesis and a femoral stem prosthesis that are removably coupled together. The sandwich prosthesis and femoral stem prosthesis are assembled together prior to implantation within the medullary canal of a patient. The sandwich prosthesis and the femoral stem prosthesis are connected together through the matching of the first connecting part and the second connecting part. The assembled femoral stem prosthesis component has the same shape as the existing femoral stem prosthesis, and the shape of the component is matched with the femoral medullary cavity. The invention utilizes the bone bonding layer formed on the outer surface of the cylindrical matrix to bond with the bone of a patient to form biological fixation. When the femoral stem prosthesis component is applied to secondary repair, the interlayer prosthesis is combined with the bone of a patient through the bone combination layer to form the biological fixing layer, so that the interlayer prosthesis is separated from the femoral stem prosthesis, the interlayer prosthesis is reserved, and only the femoral stem prosthesis is taken out, so that the bone in the medullary cavity can be protected, the bone cannot be damaged, and the operation reserves good bone and good matched effect. After the femoral stem prosthesis is taken out, the cavity in the interlayer prosthesis is exposed, and a new femoral stem prosthesis is arranged at the moment. Therefore, the technical scheme of the invention can solve the problem that the original bone mass is damaged in the secondary revision surgery in the prior art. According to the technical scheme, the revision surgery is easily completed on the premise of not losing bone, the operation difficulty is reduced, and the surgery time is shortened.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A femoral stem prosthesis assembly, comprising:
a sandwich prosthesis (10) for fitting into a medullary cavity, the sandwich prosthesis comprising: a cylindrical base body (11) and a first connecting portion (12), the cylindrical base body (11) having an inner cavity, the first connecting portion (12) being provided in the inner cavity, a bone-bonding layer (13) being formed on an outer surface of the cylindrical base body (11);
the femoral stem prosthesis (20) is arranged in the inner cavity in a penetrating mode, a second connecting portion (21) is arranged on the femoral stem prosthesis (20), the sandwich prosthesis (10) and the femoral stem prosthesis (20) are detachably connected together through matching of the first connecting portion (12) and the second connecting portion (21), and the sandwich prosthesis (10) is wrapped on the outer side of the femoral stem prosthesis (20) when the sandwich prosthesis (10) is connected with the femoral stem prosthesis (20);
the first connecting part (12) is a threaded hole arranged at the bottom of the inner cavity, the second connecting part (21) is a through hole arranged inside the femoral stem prosthesis (20), the femoral stem prosthesis assembly further comprises a fastening piece (31) which is arranged in the through hole in a penetrating mode and matched with the threaded hole, and an external thread matched with the threaded hole is arranged at a first end of the fastening piece (31);
the through-hole is the shoulder hole, the shoulder hole includes the great first through-hole section of diameter and the less second through-hole section of diameter, femoral stem prosthesis subassembly still includes jackscrew end cap (32), jackscrew end cap (32) are connected in the first through-hole section and be located fastener (31) are kept away from the one end of screw hole.
2. Femoral stem prosthesis assembly according to claim 1, wherein the junction of the first and second through-hole segments forms a step surface, the second end of the fastener (31) is provided with a bolt head (311) cooperating with the step surface, the surface of the bolt head (311) is provided with an operation hole (312).
3. The femoral stem prosthesis assembly according to claim 1, wherein the apical thread plug (32) is threadedly engaged with the first throughbore segment.
4. Femoral stem prosthesis assembly according to claim 1, characterized in that said cylindrical base body (11) is made of metal.
5. The femoral stem prosthesis assembly of claim 1, wherein the bone-bonding layer is a trabecular structural layer.
6. The femoral stem prosthesis assembly of claim 5, wherein the trabecular structural layer is made by 3D printing.
7. The femoral stem prosthesis assembly of claim 1, wherein the sandwich prosthesis further comprises:
and the fixed sharp spines are arranged on the circumferential outer surface of the cylindrical base body, and the fixed sharp spines gradually contract and extend from inside to outside.
8. The femoral stem prosthesis assembly of claim 1, wherein the sandwich prosthesis further comprises:
and the plug is arranged at one end of the cylindrical base body (11) far away from the opening of the cylindrical base body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711082953.7A CN107951599B (en) | 2017-11-06 | 2017-11-06 | Femoral stem prosthesis assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711082953.7A CN107951599B (en) | 2017-11-06 | 2017-11-06 | Femoral stem prosthesis assembly |
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| CN107951599A CN107951599A (en) | 2018-04-24 |
| CN107951599B true CN107951599B (en) | 2020-05-29 |
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| CN201711082953.7A Active CN107951599B (en) | 2017-11-06 | 2017-11-06 | Femoral stem prosthesis assembly |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108670503A (en) * | 2018-07-25 | 2018-10-19 | 南京医科大学附属逸夫医院 | A kind of bion femoral stem and its application method containing ti-ni shape memory alloy hangnail |
| CN110464513B (en) * | 2019-09-05 | 2024-08-30 | 北京爱康宜诚医疗器材有限公司 | Femoral intramedullary positioning assembly and femoral prosthesis assembly with same |
| CN115944436B (en) * | 2023-03-14 | 2023-05-02 | 北京爱康宜诚医疗器材有限公司 | Femoral stem prosthesis |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4728335A (en) * | 1986-12-15 | 1988-03-01 | Jurgutis John A | Hip prosthesis |
| US4735625A (en) * | 1985-09-11 | 1988-04-05 | Richards Medical Company | Bone cement reinforcement and method |
| US5032134A (en) * | 1983-12-16 | 1991-07-16 | Jonas Lindwer | Joint prosthesis and tool to be used therewith |
| US6063122A (en) * | 1998-06-22 | 2000-05-16 | Johnson & Johnson Professional, Inc. | Jack screw adapter for joint prosthesis |
| US6524344B2 (en) * | 2000-02-16 | 2003-02-25 | Korea Advanced Institute Of Science And Technology | Cement jacket for a cemented artificial joint stem and artificial joint having the cement jacket |
| CN100571655C (en) * | 2005-04-07 | 2009-12-23 | 韩国科学技术院 | Artificial joint system |
| CN201631425U (en) * | 2010-04-22 | 2010-11-17 | 北京天新福医疗器材有限公司 | Biological type combined femoral stem |
| CN201743800U (en) * | 2009-12-31 | 2011-02-16 | 北京爱康宜诚医疗器材股份有限公司 | Femoral shaft middle-device |
| CN201912271U (en) * | 2010-10-27 | 2011-08-03 | 国华 | Concealed intelligent self-locking femoral head handle |
| CN103445885A (en) * | 2013-07-02 | 2013-12-18 | 刘顺民 | Femoral handle fixed through expansion |
| EP2910218A1 (en) * | 2013-03-14 | 2015-08-26 | DePuy Synthes Products, LLC | Femoral component for an implantable hip prosthesis |
| CN105055051A (en) * | 2015-08-11 | 2015-11-18 | 嘉思特华剑医疗器材(天津)有限公司 | Bone trabecula hip joint system |
| CN205903332U (en) * | 2016-04-11 | 2017-01-25 | 四川大学华西医院 | 3D printing bone trabecula-imitating porous bearing reinforced metal prosthesis |
| CN206252565U (en) * | 2016-07-28 | 2017-06-16 | 北京力达康科技有限公司 | A kind of assembly type biological fixation type overhauls type femoral bone end prosthesis |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0702864D0 (en) * | 2007-02-14 | 2007-03-28 | Benoist Girard Sas | Prosthetic implant for use without bone cement |
-
2017
- 2017-11-06 CN CN201711082953.7A patent/CN107951599B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5032134A (en) * | 1983-12-16 | 1991-07-16 | Jonas Lindwer | Joint prosthesis and tool to be used therewith |
| US4735625A (en) * | 1985-09-11 | 1988-04-05 | Richards Medical Company | Bone cement reinforcement and method |
| US4728335A (en) * | 1986-12-15 | 1988-03-01 | Jurgutis John A | Hip prosthesis |
| US6063122A (en) * | 1998-06-22 | 2000-05-16 | Johnson & Johnson Professional, Inc. | Jack screw adapter for joint prosthesis |
| US6524344B2 (en) * | 2000-02-16 | 2003-02-25 | Korea Advanced Institute Of Science And Technology | Cement jacket for a cemented artificial joint stem and artificial joint having the cement jacket |
| CN100571655C (en) * | 2005-04-07 | 2009-12-23 | 韩国科学技术院 | Artificial joint system |
| CN201743800U (en) * | 2009-12-31 | 2011-02-16 | 北京爱康宜诚医疗器材股份有限公司 | Femoral shaft middle-device |
| CN201631425U (en) * | 2010-04-22 | 2010-11-17 | 北京天新福医疗器材有限公司 | Biological type combined femoral stem |
| CN201912271U (en) * | 2010-10-27 | 2011-08-03 | 国华 | Concealed intelligent self-locking femoral head handle |
| EP2910218A1 (en) * | 2013-03-14 | 2015-08-26 | DePuy Synthes Products, LLC | Femoral component for an implantable hip prosthesis |
| CN103445885A (en) * | 2013-07-02 | 2013-12-18 | 刘顺民 | Femoral handle fixed through expansion |
| CN105055051A (en) * | 2015-08-11 | 2015-11-18 | 嘉思特华剑医疗器材(天津)有限公司 | Bone trabecula hip joint system |
| CN205903332U (en) * | 2016-04-11 | 2017-01-25 | 四川大学华西医院 | 3D printing bone trabecula-imitating porous bearing reinforced metal prosthesis |
| CN206252565U (en) * | 2016-07-28 | 2017-06-16 | 北京力达康科技有限公司 | A kind of assembly type biological fixation type overhauls type femoral bone end prosthesis |
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| CN107951599A (en) | 2018-04-24 |
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