CN116898639B - Acetabular prosthesis - Google Patents
Acetabular prosthesis Download PDFInfo
- Publication number
- CN116898639B CN116898639B CN202311174103.5A CN202311174103A CN116898639B CN 116898639 B CN116898639 B CN 116898639B CN 202311174103 A CN202311174103 A CN 202311174103A CN 116898639 B CN116898639 B CN 116898639B
- Authority
- CN
- China
- Prior art keywords
- acetabular
- threaded
- medicine carrying
- rod section
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003814 drug Substances 0.000 claims abstract description 101
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 75
- 210000000588 acetabulum Anatomy 0.000 claims abstract description 15
- 238000005192 partition Methods 0.000 claims description 14
- 238000010079 rubber tapping Methods 0.000 claims description 13
- 239000011148 porous material Substances 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 5
- 239000007943 implant Substances 0.000 claims 4
- 229940079593 drug Drugs 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000844 anti-bacterial effect Effects 0.000 description 25
- 238000002513 implantation Methods 0.000 description 6
- 230000013011 mating Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000003242 anti bacterial agent Substances 0.000 description 3
- 230000008468 bone growth Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000011882 arthroplasty Methods 0.000 description 2
- 210000002449 bone cell Anatomy 0.000 description 2
- 210000001624 hip Anatomy 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229940124350 antibacterial drug Drugs 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000012377 drug delivery Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007639 printing Methods 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
Classifications
-
- 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
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
- A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
Landscapes
- 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 present invention provides an acetabular prosthesis comprising: the acetabulum body is internally provided with a medicine carrying cavity; the first end of the connecting piece is positioned in the medicine carrying cavity, and the second end of the connecting piece penetrates out of the acetabular body; wherein, the connecting piece includes the medicine carrying channel of the outside of intercommunication medicine carrying chamber and acetabular bone body. The technical scheme of the application effectively solves the problem that medicines cannot be provided for the position between the autologous bone of the human body and the acetabular prosthesis for a long time in the related technology.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an acetabular prosthesis.
Background
Hip arthroplasty refers to the replacement of an acetabular prosthesis, a femoral head prosthesis, and a femoral stem prosthesis into a patient, the femoral head prosthesis being attached to a proximal end of the femoral stem prosthesis, the femoral head prosthesis being rotatably attached within the acetabular prosthesis. The hip arthroplasty can effectively eliminate pain of patients and restore the activity function of the patients. The acetabular prosthesis is at risk of infection during implantation, thereby affecting the implantation effect of the acetabular prosthesis.
The acetabular prosthesis in the related art reduces the infection risk of the acetabular prosthesis in the implantation process by smearing the antibacterial medicine on the outer surface, but the antibacterial medicine on the outer surface of the acetabular prosthesis has shorter action time, can not provide medicine for the position between the autologous bone of the human body and the acetabular prosthesis for a long time, and can not meet the antibacterial requirement after the acetabular prosthesis is implanted.
Disclosure of Invention
The main object of the present invention is to provide an acetabular prosthesis to solve the problem that the related art cannot provide medicines for a long time at a position between an autogenous bone of a human body and the acetabular prosthesis.
To achieve the above object, the present invention provides an acetabular prosthesis comprising: the acetabulum body is internally provided with a medicine carrying cavity; the first end of the connecting piece is positioned in the medicine carrying cavity, and the second end of the connecting piece penetrates out of the acetabular body; wherein, the connecting piece includes the medicine carrying channel of the outside of intercommunication medicine carrying chamber and acetabular bone body.
Further, the connecting piece still includes the connecting rod section, and the connecting rod section includes pole core and sets up the outer portion at the surface of pole core, and the medicine carrying channel sets up in outer portion, and the first end of connecting rod section is located the medicine carrying intracavity, and the second end of connecting rod section wears out to the acetabulum body outside.
Further, the connecting piece further comprises a self-tapping threaded rod section, and the self-tapping threaded rod section is connected with the second end of the connecting rod section and is coaxially arranged with the connecting rod section.
Further, the acetabular body comprises an acetabular cup base body and a separation plate arranged at the top of the acetabular cup base body, and a medicine carrying cavity is formed between the acetabular cup base body and the separation plate.
Further, the inner side wall of the acetabular cup base body comprises a first conical surface, and a second conical surface matched with the first conical surface in a fitting mode is arranged on the side wall of the separation plate.
Further, the connecting piece further comprises a connecting rod section and a stop head connected with the first end of the connecting rod section, the outer diameter of the stop head is larger than that of the connecting rod section, the medicine carrying channel is arranged on the connecting rod section, the first end of the connecting rod section is positioned in the medicine carrying cavity, and the second end of the connecting rod section penetrates out of the acetabular body; be provided with the shoulder hole on the division board, the shoulder hole includes first hole section and second hole section, and the aperture of first hole section is greater than the aperture in the second hole section, and first hole section sets up in division board one side that deviates from the medicine carrying cavity, and the stopper head cooperates with the pore wall backstop of first hole section, and partial connecting rod section is located the second hole section and stretches into to carrying the medicine intracavity.
Further, the outer layer part is a first porous structure layer, and holes in the first porous structure layer form drug carrying channels.
Further, a first threaded matching part is arranged on the inner side wall of the acetabular cup base body, a second threaded matching part is arranged on one side, facing the medicine carrying cavity, of the partition plate, the first threaded matching part is in threaded matching with the second threaded matching part, one of the first threaded matching part and the second threaded matching part is a threaded sleeve, and the other of the first threaded matching part and the second threaded matching part is a threaded column.
Further, the acetabular body comprises an acetabular cup matrix and a second porous structural layer, wherein the outer side wall of the acetabular cup matrix is provided with a bone grafting groove, and the second porous structural layer is arranged on the outer side of the acetabular cup matrix and covers the bone grafting groove.
Further, a positioning bulge positioned in the bone grafting groove is also arranged on the outer side wall of the acetabular cup matrix, and a medicine carrying hole communicated with the bone grafting groove is arranged in the positioning bulge.
Further, the acetabular body comprises an acetabular cup matrix, a second porous structural layer arranged outside the acetabular cup matrix and a third porous structural layer arranged outside the second porous structural layer, wherein the porosity of the second porous structural layer is larger than that of the third porous structural layer.
Further, a threaded bulge is arranged on the outer side wall of the acetabular cup matrix; the second porous structure layer is provided with a first threaded hole in threaded fit with the threaded protrusion, and/or the third porous structure layer is provided with a second threaded hole in threaded fit with the threaded protrusion.
By applying the technical scheme of the invention, the acetabular prosthesis comprises an acetabular body and a connecting piece. The acetabulum body is internally provided with a medicine carrying cavity. The first end of the connecting piece is positioned in the medicine carrying cavity, and the second end of the connecting piece penetrates out of the acetabular body. Wherein, the connecting piece includes the medicine carrying channel of the outside of intercommunication medicine carrying chamber and acetabular bone body. In this way, the antibacterial medicine is placed in the medicine carrying cavity, and the antibacterial medicine can be conveyed to the outside of the acetabulum body from the medicine carrying cavity through the medicine carrying channel of the connecting piece. And, the second end of the connecting piece that wears out to the outside of the acetabular shell can insert into the autologous bone of human body for antibacterial drug can be better carried to the position between the autologous bone of human body and the acetabular prosthesis. The setting of carrying the medicine chamber can hold more antibacterial medicine, carries the position department between the autologous bone of medicine passageway be convenient for with antibacterial medicine delivery human body and the acetabular prosthesis, has prolonged the time of providing antibacterial medicine to the position department between autologous bone of human body and the acetabular prosthesis, can satisfy the antibacterial demand after the acetabular prosthesis is planted better. Therefore, the technical scheme effectively solves the problem that medicines cannot be provided for the position between the autologous bone of the human body and the acetabular prosthesis for a long time in the related technology.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 shows a schematic perspective view of an embodiment of an acetabular prosthesis according to the invention;
FIG. 2 shows a schematic cross-sectional view of the acetabular prosthesis of FIG. 1;
FIG. 3 shows an exploded view of the acetabular prosthesis of FIG. 1;
FIG. 4 illustrates a schematic perspective view of an acetabular cup base of the acetabular prosthesis of FIG. 1;
fig. 5 shows a schematic side view of a divider plate of the acetabular prosthesis of fig. 1.
Wherein the above figures include the following reference numerals:
10. an acetabular body; 11. an acetabular cup base; 12. a partition plate; 13. a second porous structural layer; 14. a third porous structural layer; 15. a drug-carrying cavity; 16. a stepped hole; 17. a first conical surface; 18. a second conical surface;
21. a threaded sleeve; 22. a threaded column; 23. a bone grafting groove; 231. positioning the bulge; 232. a drug carrying hole; 24. a threaded boss; 25. a first threaded hole; 26. a second threaded hole;
30. a connecting piece; 31. a connecting rod section; 311. a first porous structural layer; 32. self-tapping the threaded rod section; 33. a stop head.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the 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 in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
As shown in fig. 1 to 5, the acetabular prosthesis of the present embodiment includes an acetabular body 10 and a connecting member 30. A medicine carrying cavity 15 is arranged in the acetabulum body 10. The first end of the connector 30 is located within the drug-carrying cavity 15 and the second end of the connector 30 extends out of the acetabular body 10. Wherein the connector 30 comprises a drug-carrying channel communicating between the drug-carrying cavity 15 and the exterior of the acetabular body 10.
By applying the technical scheme of the embodiment, the antibacterial medicine is placed in the medicine carrying cavity 15, and the antibacterial medicine can be conveyed to the outside of the acetabular body 10 from the inside of the medicine carrying cavity 15 through the medicine carrying channel of the connecting piece 30. And, the second end of the connection member 30 penetrating out of the acetabular body 10 can be inserted into the autologous bone of the human body so that the antibacterial agent can be better delivered to a position between the autologous bone of the human body and the acetabular prosthesis. The arrangement of the medicine carrying cavity 15 can accommodate more antibacterial medicines, the arrangement of the medicine carrying channel is convenient for conveying the antibacterial medicines to the position between the autologous bone of the human body and the acetabular prosthesis, the time for providing the antibacterial medicines to the position between the autologous bone of the human body and the acetabular prosthesis is prolonged, and the antibacterial requirements after the acetabular prosthesis is implanted can be better met. Therefore, the technical scheme of the embodiment effectively solves the problem that medicines cannot be provided for the position between the autologous bone of the human body and the acetabular prosthesis for a long time in the related technology.
It should be noted that the acetabular prosthesis in this embodiment further includes an acetabular liner disposed in the acetabular body 10, and the femoral head prosthesis is rotatably connected in the acetabular liner. The acetabular liner is convenient for matching the acetabular prosthesis with the femoral head prosthesis, and can better recover the activity function of a patient.
As shown in fig. 1 to 5, the connecting member 30 further includes a connecting rod section 31, the connecting rod section 31 includes a rod core portion and an outer layer portion disposed on an outer surface of the rod core portion, the arrangement of the rod core portion improves structural strength of the connecting member 30, and the arrangement of the outer layer portion facilitates processing of the medicine carrying passage. The medicine carrying channel is arranged in the outer layer part, so that the medicine carrying channel can conveniently convey the antibacterial medicine to the autologous bone of the human body through the outer layer part contacted with the autologous bone of the human body. The first end of the connecting rod section 31 is positioned in the medicine carrying cavity 15, and the second end of the connecting rod section 31 penetrates out of the acetabulum body 10, so that the medicine carrying channel can be communicated with the medicine carrying cavity 15 and the autologous bone of the human body.
As shown in fig. 1-5, the connector 30 further includes a self-tapping threaded rod segment 32, the self-tapping threaded rod segment 32 being connected to the second end of the connecting rod segment 31 and coaxially disposed with the connecting rod segment 31. The self-tapping threaded rod section 32 can be driven to rotate by rotating the connecting rod section 31, so that the self-tapping threaded rod section 32 can smoothly enter into the human body autologous bone, and the connecting piece 30 is convenient to connect with the human body autologous bone. The self-tapping threaded rod section 32 and the connecting rod section 31 are coaxially arranged, so that when the connecting rod section 31 rotates, the self-tapping threaded rod section 32 can coaxially rotate with the connecting rod section 31, and the self-tapping threaded rod section 32 can be conveniently screwed into a human body autologous bone. In addition, the self-tapping threaded rod section 32 can generate binding force between the acetabular body 10 and the autologous bone of the human body so as to perform an initial stabilization function on the acetabular body 10, avoid the need of implanting the acetabular body 10 into the autologous bone of the human body through strong knocking, and avoid external force damage to the autologous bone of the human body and the acetabular prosthesis.
As shown in fig. 1 to 5, the acetabular body 10 includes an acetabular cup base 11 and a partition plate 12 provided on top of the acetabular cup base 11, and a medicine carrying chamber 15 is formed between the acetabular cup base 11 and the partition plate 12. The arrangement of the partition plate 12 facilitates processing the medicine carrying cavity 15 in the acetabular body 10, and the medicine carrying cavity 15 formed between the partition plate 12 and the acetabular cup base 11 further increases the capacity of the medicine carrying cavity 15, so that the medicine carrying cavity 15 can accommodate more antibacterial medicines. In addition, by adding an antibacterial agent to the top of the acetabular cup body 11 and fixing the partition plate 12 to the acetabular cup body 11, the addition of an antibacterial agent to the drug-carrying chamber 15 can be facilitated.
In this embodiment, the acetabular cup body 11 has an opening, the opening of the acetabular cup body 11 is a bottom, and a side of the acetabular cup body 11 away from the opening is a top.
As shown in fig. 1 to 5, the inner side wall of the acetabular cup base 11 includes a first conical surface 17, and a second conical surface 18 fitting with the first conical surface 17 is provided on the side wall of the partition plate 12. The arrangement of the first conical surface 17 and the second conical surface 18 increases the contact area between the inner side wall of the acetabular cup base 11 and the side wall of the partition plate 12, and improves the tightness of the cavity of the medicine carrying cavity 15 formed between the acetabular cup base 11 and the partition plate 12.
As shown in fig. 1 to 5, the connection member 30 further includes a connection rod section 31 and a stopper head 33 connected to a first end of the connection rod section 31, the stopper head 33 having an outer diameter larger than that of the connection rod section 31. The medicine carrying channel is arranged on the connecting rod section 31, the first end of the connecting rod section 31 is positioned in the medicine carrying cavity 15, and the second end of the connecting rod section 31 penetrates out of the acetabulum body 10, so that the medicine carrying channel can be communicated with the medicine carrying cavity 15 and autologous bones of a human body. The division plate 12 is provided with a stepped hole 16, the stepped hole 16 comprises a first hole section and a second hole section, the aperture of the first hole section is larger than that of the second hole section, and the first hole section is arranged on one side, away from the medicine carrying cavity 15, of the division plate 12. The stop head 33 is in stop fit with the wall of the first hole section, and part of the connecting rod section 31 is positioned in the second hole section and extends into the medicine carrying cavity 15. When the second end of the connecting rod section 31 is inserted into the autologous bone of the human body, the stop head 33 can be matched with the hole wall stop of the first hole section, so that the stop head 33 applies force towards the medicine carrying cavity 15 to the partition plate 12, the matching between the acetabular cup base 11 and the partition plate 12 is tighter, and the tightness of the cavity of the medicine carrying cavity 15 is improved. In this embodiment, a predetermined distance exists between the drug delivery channel on the connecting rod segment 31 and the stop head 33.
As shown in fig. 1 to 5, the outer layer portion is a first porous structure layer 311, and pores in the first porous structure layer 311 form drug carrying channels. The first porous structure layer 311 facilitates processing of the drug-carrying channels. And, the first porous structure layer 311 has a plurality of holes therein, and the medicine carrying channels formed by the plurality of holes facilitate the delivery of the antibacterial medicine in the medicine carrying chamber 15. Under the infiltration of human tissue fluid, the antibacterial medicine in the medicine carrying bin is more easily conveyed into the autologous bone of the human body through the holes in the first porous structure layer 311, so that an antibacterial effect is achieved. In addition, the first porous structure can be used for slowly releasing the antibacterial medicine in the medicine carrying cavity 15 to the position between the autologous bone of the human body and the acetabular prosthesis, so that the release time of the antibacterial medicine is prolonged, the medicine can be provided for the position between the autologous bone of the human body and the acetabular prosthesis for a long time, and the antibacterial requirement after the acetabular prosthesis is implanted is further met.
As shown in fig. 1 to 5, a first screw-thread mating portion is provided on the inner side wall of the acetabular cup base 11, and a second screw-thread mating portion is provided on the side of the partition plate 12 facing the medicine carrying chamber 15, and the first screw-thread mating portion is screw-fitted with the second screw-thread mating portion. The threaded fit of the first threaded fit portion and the second threaded fit portion enables the divider 12 to be more firmly connected with the acetabular cup base 11, further improving the tightness of the cavity of the drug-carrying cavity 15. In this embodiment, the first threaded engagement is a threaded sleeve 21 and the second threaded engagement is a threaded post 22. The threaded sleeve 21 and the threaded column 22 are simple in structure and convenient to process.
In an embodiment not shown in the figures, the first threaded engagement is a threaded post and the second threaded engagement is a threaded sleeve.
As shown in fig. 1 to 5, the acetabular body 10 includes an acetabular cup body 11 and a second porous structure layer 13, bone grafting grooves 23 are provided on an outer sidewall of the acetabular cup body 11, and the second porous structure layer 13 is provided on an outer side of the acetabular cup body 11 and covers the bone grafting grooves 23. The resected autologous bone is placed into the bone grafting groove 23, the resected autologous bone in the bone grafting groove 23 can be limited in the bone grafting groove 23 by the arrangement of the second porous structure layer 13, and the autologous bone of a human body is grown into the second porous structure and then combined with the resected autologous bone in the bone grafting groove 23, so that the connection reliability between the implanted acetabular body 10 and the autologous bone of the human body can be improved, and the long-term stability of the acetabular prosthesis after implantation is improved. The excised autologous bone has the same porosity as the autologous bone of the human body, and the autologous bone of the human body grows into and is more firm and reliable after being combined with the excised autologous bone.
As shown in fig. 1 to 5, the outer sidewall of the acetabular cup substrate 11 is further provided with a positioning protrusion 231 located in the bone grafting groove 23, and the positioning protrusion 231 is convenient for positioning the resected autologous bone in the bone grafting groove 23, avoiding the movement of the resected autologous bone in the bone grafting groove 23, and facilitating the combination of the growth of the autologous bone of the human body and the resected autologous bone. The positioning protrusion 231 is internally provided with a medicine carrying hole 232 communicated with the bone grafting groove 23, and antibacterial medicine is placed in the medicine carrying hole 232 so as to be convenient for antibacterial action on the resected autologous bone.
As shown in fig. 1-5, the acetabular body 10 includes an acetabular cup base 11, a second porous structural layer 13 disposed outside of the acetabular cup base 11, and a third porous structural layer 14 disposed outside of the second porous structural layer 13. The provision of the second and third porous structure layers 13 and 14 increases the thickness of the porous structure layers and facilitates processing more than a single porous structure layer, and facilitates blowing off the processed powder when the porous structure layers are processed.
As shown in fig. 1 to 5, the second porous structure layer 13 has a porosity larger than that of the third porous structure layer 14. Thus, the mesh and pores of the third porous structure layer 14 located at the outside are denser, and the mesh and pores of the second porous structure layer 13 located at the inside are sparser. The pores of the third porous structure layer 14 are dense, so that the connection reliability of the human body after the autologous bone grows into the third porous structure layer 14 is improved. The pores of the second porous structure layer 13 are sparse, so that more bone growth space can be provided, and more bone tissue can grow into the second porous structure layer 13. In this way, the long-term stability of the acetabular prosthesis after implantation is improved.
In the present embodiment, the pore size of the third porous structure layer 14 is set closer to the bone cells to facilitate the adhesion of the bone cells, so that more bone tissue is formed in the third porous structure layer 14 located at the outside, resulting in good bone growth. When bone grows into the outer surface of the second porous structure layer 13 inside, since the third porous structure layer 14 contains bone tissue, and the pores of the second porous structure layer 13 are sparse, the bone tissue in the third porous structure layer 14 grows into the second porous structure layer 13, the second porous structure layer 13 has a larger porosity, more bone growth space can be provided, and more bone tissue can be formed in the second porous structure layer 13. After the second porous structure layer 13 and the third porous structure layer 14 form more bone tissue, the acetabular prosthesis and the autologous bone of the human body can form more stable combination, thereby improving long-term stability of the acetabular prosthesis after implantation.
The porosity is inversely proportional to the degree of compaction. That is, the compactness of the second porous structure layer 13 is smaller than that of the third porous structure layer 14, and the density of the pores of the second porous structure layer 13 is smaller than that of the third porous structure layer 14.
As shown in fig. 1-5, the outer sidewall of the acetabular cup base 11 is provided with threaded bosses 24. The second porous structure layer 13 is provided with a first screw hole 25 screw-fitted with the screw boss 24. The threaded bosses 24 cooperate with the first threaded holes 25 to provide a more secure connection of the second porous structure layer 13 to the acetabular cup base 11. The third porous structure layer 14 is provided with a second threaded hole 26 which is in threaded engagement with the threaded boss 24. The threaded bosses 24 cooperate with the second threaded holes 26 to provide a more secure connection of the third porous structure layer 14 to the acetabular cup base 11.
In an embodiment not shown in the drawings, the second porous structure layer is provided with a first screw hole screw-engaged with the screw boss, or the third porous structure layer is provided with a second screw hole screw-engaged with the screw boss.
In other embodiments, the acetabular cup substrate and the second porous structural layer are one-piece, and the second porous structural layer is machined out of the acetabular cup substrate by 3D additive printing techniques.
In this embodiment, the acetabular prosthesis further comprises a set screw. The fixing screw penetrates out of the acetabular cup base body 11, the second porous structure layer 13 and the third porous structure layer 14, and the fixing screw is located outside the medicine carrying cavity 15. The acetabular cup base body 11, the second porous structure layer 13 and the third porous structure layer 14 are provided with matching holes for penetrating fixing screws. The arrangement of the fixing screw ensures that the acetabular prosthesis is more firmly and reliably connected with the autologous bone of the human body. The bone graft slot 23 extends in a direction from the opening of the acetabular cup body 11 to the bottom of the acetabular cup body 11. In this way, the mating holes can be better avoided to increase the capacity of the bone graft slots 23.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative 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 in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An acetabular prosthesis comprising:
the acetabulum comprises an acetabulum body (10), wherein a medicine carrying cavity (15) is arranged in the acetabulum body (10);
the first end of the connecting piece (30) is positioned in the medicine carrying cavity (15), and the second end of the connecting piece (30) penetrates out of the acetabulum body (10);
wherein the connecting piece (30) comprises a medicine carrying channel which is communicated with the medicine carrying cavity (15) and the outside of the acetabulum body (10); the connecting piece (30) further comprises a connecting rod section (31), the connecting rod section (31) comprises a rod core part and an outer layer part arranged on the outer surface of the rod core part, the medicine carrying channel is arranged in the outer layer part, the first end of the connecting rod section (31) is positioned in the medicine carrying cavity (15), and the second end of the connecting rod section (31) penetrates out of the acetabulum body (10);
the acetabular cup body (10) comprises an acetabular cup base body (11) and a separation plate (12) arranged at the top of the acetabular cup base body (11), wherein a medicine carrying cavity (15) is formed between the acetabular cup base body (11) and the separation plate (12);
the outer layer part is a first porous structure layer (311), and holes in the first porous structure layer (311) form the medicine carrying channels.
2. The acetabular prosthesis according to claim 1, wherein the connecting member (30) further comprises a self-tapping threaded rod section (32), the self-tapping threaded rod section (32) being connected to the second end of the connecting rod section (31) and being coaxially arranged to the connecting rod section (31).
3. The acetabular prosthesis according to claim 1, characterized in that the inner sidewall of the acetabular cup base (11) comprises a first conical surface (17), and the sidewall of the divider plate (12) is provided with a second conical surface (18) in fitting engagement with the first conical surface (17).
4. The acetabular prosthesis of claim 1, wherein the implant is configured to receive the implant,
the connecting piece (30) further comprises a connecting rod section (31) and a stop head (33) connected with the first end of the connecting rod section (31), the outer diameter of the stop head (33) is larger than that of the connecting rod section (31), the medicine carrying channel is arranged on the connecting rod section (31), the first end of the connecting rod section (31) is positioned in the medicine carrying cavity (15), and the second end of the connecting rod section (31) penetrates out of the acetabulum body (10);
be provided with shoulder hole (16) on division board (12), shoulder hole (16) include first hole section and second hole section, the aperture of first hole section is greater than the aperture in the second hole section, first hole section sets up division board (12) deviate from medicine carrying cavity (15) one side, stop head (33) with the pore wall backstop cooperation of first hole section, part connecting rod section (31) are located second hole section stretches into in medicine carrying cavity (15).
5. The acetabular prosthesis according to claim 1, wherein a first threaded engagement portion is provided on an inner sidewall of the acetabular cup base body (11), a second threaded engagement portion is provided on a side of the partition plate (12) facing the drug-carrying chamber (15), the first threaded engagement portion is threaded with the second threaded engagement portion, one of the first threaded engagement portion and the second threaded engagement portion is a threaded sleeve (21), and the other is a threaded post (22).
6. The acetabular prosthesis according to claim 1, wherein the acetabular body (10) comprises an acetabular cup body (11) and a second porous structural layer (13), wherein bone grafting grooves (23) are provided on an outer sidewall of the acetabular cup body (11), and wherein the second porous structural layer (13) is provided on an outer side of the acetabular cup body (11) and covers the bone grafting grooves (23).
7. The acetabular prosthesis according to claim 6, characterized in that the outer side wall of the acetabular cup base body (11) is further provided with a positioning protrusion (231) positioned in the bone grafting groove (23), and the positioning protrusion (231) is internally provided with a medicine carrying hole (232) communicated with the bone grafting groove (23).
8. The acetabular prosthesis according to claim 1, wherein the acetabular body (10) comprises an acetabular cup matrix (11), a second porous structural layer (13) disposed outside the acetabular cup matrix (11), and a third porous structural layer (14) disposed outside the second porous structural layer (13), the second porous structural layer (13) having a porosity greater than the third porous structural layer (14).
9. The acetabular prosthesis of claim 8, wherein the implant is configured to receive the implant,
a thread bulge (24) is arranged on the outer side wall of the acetabular cup base body (11);
the second porous structure layer (13) is provided with a first threaded hole (25) in threaded fit with the threaded protrusion (24), and/or the third porous structure layer (14) is provided with a second threaded hole (26) in threaded fit with the threaded protrusion (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311174103.5A CN116898639B (en) | 2023-09-12 | 2023-09-12 | Acetabular prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311174103.5A CN116898639B (en) | 2023-09-12 | 2023-09-12 | Acetabular prosthesis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116898639A CN116898639A (en) | 2023-10-20 |
| CN116898639B true CN116898639B (en) | 2024-01-23 |
Family
ID=88363371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311174103.5A Active CN116898639B (en) | 2023-09-12 | 2023-09-12 | Acetabular prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116898639B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101919754A (en) * | 2009-06-09 | 2010-12-22 | 北京爱康宜诚医疗器材有限公司 | Atlantoaxial arthrodesis acetabular cup |
| CN206651895U (en) * | 2016-10-27 | 2017-11-21 | 北京爱康宜诚医疗器材有限公司 | Acetabular bone fills block assembly and has its Hip System |
| CN107510522A (en) * | 2017-08-22 | 2017-12-26 | 深圳维度生物医疗科技有限公司 | A kind of hollow porous titanium femoral head support stick with gradual-change bore diameter and porosity |
| CN110584838A (en) * | 2019-09-12 | 2019-12-20 | 北京爱康宜诚医疗器材有限公司 | Acetabular prosthesis |
| CN111529135A (en) * | 2020-05-22 | 2020-08-14 | 北京科仪邦恩医疗器械科技有限公司 | Acetabular cup and acetabular prosthesis system |
| CN111629695A (en) * | 2018-03-07 | 2020-09-04 | 科辛顿有限公司 | Acetabular spacer device containing pharmaceutical substances |
| CN112998912A (en) * | 2021-03-12 | 2021-06-22 | 浙江大学医学院附属第一医院 | 3D printing acetabular cup prosthesis for artificial hip joint replacement surgery |
| CN114948352A (en) * | 2022-06-15 | 2022-08-30 | 中国人民解放军总医院第四医学中心 | Hip joint prosthesis system |
| CN115531045A (en) * | 2022-09-29 | 2022-12-30 | 中国人民解放军总医院第四医学中心 | Prosthesis structure |
| CN219000735U (en) * | 2022-12-29 | 2023-05-12 | 北京爱康宜诚医疗器材有限公司 | Acetabular prosthesis |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9616205B2 (en) * | 2008-08-13 | 2017-04-11 | Smed-Ta/Td, Llc | Drug delivery implants |
| US20220168109A1 (en) * | 2020-11-27 | 2022-06-02 | Biorl S.R.L. | Prosthetic implant |
-
2023
- 2023-09-12 CN CN202311174103.5A patent/CN116898639B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101919754A (en) * | 2009-06-09 | 2010-12-22 | 北京爱康宜诚医疗器材有限公司 | Atlantoaxial arthrodesis acetabular cup |
| CN206651895U (en) * | 2016-10-27 | 2017-11-21 | 北京爱康宜诚医疗器材有限公司 | Acetabular bone fills block assembly and has its Hip System |
| CN107510522A (en) * | 2017-08-22 | 2017-12-26 | 深圳维度生物医疗科技有限公司 | A kind of hollow porous titanium femoral head support stick with gradual-change bore diameter and porosity |
| CN111629695A (en) * | 2018-03-07 | 2020-09-04 | 科辛顿有限公司 | Acetabular spacer device containing pharmaceutical substances |
| CN110584838A (en) * | 2019-09-12 | 2019-12-20 | 北京爱康宜诚医疗器材有限公司 | Acetabular prosthesis |
| CN111529135A (en) * | 2020-05-22 | 2020-08-14 | 北京科仪邦恩医疗器械科技有限公司 | Acetabular cup and acetabular prosthesis system |
| CN112998912A (en) * | 2021-03-12 | 2021-06-22 | 浙江大学医学院附属第一医院 | 3D printing acetabular cup prosthesis for artificial hip joint replacement surgery |
| CN114948352A (en) * | 2022-06-15 | 2022-08-30 | 中国人民解放军总医院第四医学中心 | Hip joint prosthesis system |
| CN115531045A (en) * | 2022-09-29 | 2022-12-30 | 中国人民解放军总医院第四医学中心 | Prosthesis structure |
| CN219000735U (en) * | 2022-12-29 | 2023-05-12 | 北京爱康宜诚医疗器材有限公司 | Acetabular prosthesis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116898639A (en) | 2023-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9561354B2 (en) | Drug delivery implants | |
| USRE34037E (en) | Support for biomedical implant device | |
| US9814582B2 (en) | Orthopedic augments having recessed pockets | |
| EP2323587B1 (en) | Drug delivery implants | |
| EP3517078B1 (en) | Orthopaedic implant with porous structural member | |
| CN113796997B (en) | Acetabular cup prosthesis | |
| US10460857B2 (en) | Skin button with flat cable | |
| CN116898639B (en) | Acetabular prosthesis | |
| CN112972073B (en) | Vertebral body prosthesis | |
| CN113576718B (en) | Acetabular cup prosthesis | |
| CN112386372B (en) | Intramedullary fusion piece and femoral prosthesis component with same | |
| CN115624417B (en) | Femoral stem prosthesis | |
| EP0343114B1 (en) | Transcutaneous device | |
| CN213076100U (en) | Inner liner and acetabulum assembly with same | |
| US11426291B2 (en) | Orthopaedic implant with porous structural member | |
| CN114939009A (en) | Femoral stem prosthesis system and hip prosthesis | |
| CN116807695B (en) | Hip joint prosthesis | |
| AU2007297820A1 (en) | Hearing aid system including implantable housing and exchangeable transducer | |
| CN215960468U (en) | Implant type biological metal bar for repairing acetabular bone defect | |
| CN219000740U (en) | Phalangeal prosthesis structure | |
| CN214967161U (en) | Ulna and radius prosthesis | |
| US20230310160A1 (en) | Augment implant | |
| CN113456306B (en) | Hip joint prosthesis | |
| CN117204987B (en) | Talus prosthesis | |
| CN210277410U (en) | Loading device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |