CA2336251A1 - Implant - Google Patents
Implant Download PDFInfo
- Publication number
- CA2336251A1 CA2336251A1 CA002336251A CA2336251A CA2336251A1 CA 2336251 A1 CA2336251 A1 CA 2336251A1 CA 002336251 A CA002336251 A CA 002336251A CA 2336251 A CA2336251 A CA 2336251A CA 2336251 A1 CA2336251 A1 CA 2336251A1
- Authority
- CA
- Canada
- Prior art keywords
- implant
- axial
- axial section
- peaks
- crests
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
- A61B17/863—Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0022—Self-screwing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0022—Self-screwing
- A61C8/0025—Self-screwing with multiple threads
Abstract
Implant (10) having a shaft which is adapted in use to be embedded in bone tissue and which has an outer surface provided with a circumferentially- oriented roughness. The circumferentially-oriented roughness has first and second axial sections (19, 21) with each section comprising a series of circumferentially-oriented peaks which have a crest and which are axially spaced apart by troughs. The axial spacing (d) between the crests of adjacen t peaks in the first axial section (19) is less than the axial spacing (3d) between the crests of adjacent peaks in the second axial section (21). Although the axial spacing between the crests of adjacent peaks in the first and second axial sections of circumferentially-oriented roughness differs, t he first and second axial sections of circumferentially-oriented roughness are adapted in use to provide the same or substantially the same pitch.
Claims (28)
1. An implant (10) having a shaft which is adapted in use to be embedded in bone tissue and which has an outer surface provided with a circumferentially-oriented roughness characterised in that the circumferentially-oriented roughness has first and second axial sections (19, 21), each section comprising a series of circumferentially-oriented peaks which have a crest and are axially spaced apart by troughs, that the axial sparing (d) between the crests of adjacent peaks in the first axial section (19) is less than the axial spacing (3d) between the crests of adjacent peaks in the second axial section (21) and that the first and second axial sections of circumferentially-oriented roughness are adapted in use to provide the same or substantially the same pitch.
2. An implant as claimed in claim 1, characterised in that the shaft has a coronal end (5) and an apical end (1) and that the first axial section is located coronally of the second axial section.
3. An implant as claimed in claim 1 or 2, characterised in that the first and second axial sections are contiguous.
4. An implant as claimed in claim 3 when appendant on claim 2, characterised in that the first axial section extends from the coronal end of the shaft to a position coronally of the apical end and the second axial section extends from the first axial section towards the apical end.
5. An implant as claimed in claim 2, claim 3 when appendant on claim 2 or claim 4, wherein a blind bore (9) extends apically into the shaft from the coronal end to an end surface in-between the apical and coronal ends of the shaft for a superstructure to be secured to the implant, the blind bore comprising an internally-threaded section (15) having a coronal edge and an apical edge for screw connection of the superstructure to the implant, characterised in that the apical edge of the internally-threaded section of the blind bore terminates at a position which is disposed apically of the first axial section.
6. An implant as claimed in claim 5, characterised in that the internally-threaded section is an apical section of the blind-bore.
7. An implant as claimed in any one of the preceding claims, characterised in that the pitch is a predetermined distance, that the ratio of the predetermined distance to the axial spacing between the crests of adjacent peaks in the first axial section is a first multiple integer, that the ratio of the predetermined distance to the axial spacing between the crests of adjacent peaks in the second axial section is a second multiple integer and that the first multiple integer is greater than the second multiple integer.
8. An implant as claimed in any one of the preceding claims, characterised in that the crests of all of the peaks, or substantially all of the peaks, in the first and second axial sections lie on an axial plane parallel to the main axis of the shaft.
9. An implant as claimed in any one of the preceding claims, characterised in that the height (h1, h2) of the peaks, as measured from the troughs to the crests, in the first axial section differs from that in the second axial section.
10. An implant as claimed in claim 9, characterised in that the height (h1) of the peaks in the first axial section is less than the height (h2) of the peaks in the second axial section.
11. An implant as claimed in any one of claims 1 to 8, characterised in that the height (h1, h2) of the peaks, as measured from the troughs to the crests, in the first axial section is the same or substantially the same as in the second axial section.
12. An implant as claimed in any one of claims 1 to 10, characterised in that the ratio of the height of the peaks, as measured from the troughs to the crests, to the axial spacing between the crests of adjacent peaks in the first axial section is the same or substantially the same as in the second axial section.
13. An implant as claimed in any one of the preceding claims, characterised in that the height of the peaks, as measured from the troughs to the crests, in the first axial section is no greater than 0.20 mm.
14. An implant as claimed in any one of the preceding claims, characterised in that the height of the peaks, as measured from the troughs to the crests, in the second axial section is in the range 0.15-1 mm.
15. An implant as claimed in any one of the preceding claims, characterised in that the circumferentially-oriented roughness in at least one of the first and second axial sections is presented by a screw thread profile with the circumferentially-oriented peaks being defined by thread elements of the screw thread profile.
16. An implant as claimed in any one of claims 1 to 14, characterised in that both the first and second axial sections are presented by a screw thread profile with the circumferentially-oriented peaks being defined by thread elements of the screw thread profiles.
17. An implant as claimed in claim 15 or 16, characterised in that the or each screw thread profile is formed by a screw thread structure.
18. An implant as claimed in claim 17 when appendant on claim 16, characterised in that the screw thread structure of the first axial section is formed by a first set of independent screw threads each having turns; the turns of each
19 independent screw thread in the first set defining thread elements in the first axial section and being sequentially arranged with the turns of the other independent screw threads in the first set with adjacent turns of one of the independent screw threads of the first set being axially-spaced apart by a predetermined spacing distance which is the same for adjacent turns of the other independent screw threads in the first set; and the screw thread structure of the second axial section is formed by (i) an independent screw thread having turns which define the thread elements of the second axial section and are axially-spaced apart by the predetermined spacing distance or essentially the predetermined spacing distance, or (ii) a second set of independent screw threads numbering less than in the first set each having turns, the turns of each independent screw thread in the second set defining thread elements in the second axial section and being sequentially arranged with the turns of the other independent screw threads in the second set with adjacent turns of each independent screw thread of the second set being axially-spaced apart by the predetermined spacing distance or essentially the predetermined spacing distance.
19. An implant as claimed in claim 18, characterised in that one or more of the independent screw threads of the first and second axial sections are shared by the first and second axial sections.
19. An implant as claimed in claim 18, characterised in that one or more of the independent screw threads of the first and second axial sections are shared by the first and second axial sections.
20. An implant as claimed in claim 18 or 19, characterised in that the or each independent screw thread of at least one of the first and second axial sections is a microthread.
21. An implant as claimed in claim 20, characterised in that only the independent screw threads of the first axial section are microthreads.
22. An implant as claimed in claim 20, characterised in that the independent screw threads of the first and second axial sections are microthreads.
23. An implant as claimed in any one of claims 1 to 14, characterised in that the circumferentially-oriented roughness in at least one of the first and second axial sections is formed by a series of axially spaced-apart circumferential lines of beads.
24. An implant as claimed in claim 23, characterised in that the beads in each line are circumferentially spaced-apart.
25. An implant as claimed in any one of the preceding claims, characterised in that the implant is a dental implant adapted for implantation in the maxilla or mandible of an edentulous patient for supporting a superstructure which presents one or more artificial teeth.
26. A method of implanting an implant into a bone tissue structure comprising the steps of providing an implant (10) as claimed in any one of the preceding claims, providing a bore-hole in the bone tissue structure and screwing the implant into the bore-hole so that the shaft is embedded in the bone tissue.
27. An implant (10) substantially as hereinbefore described with reference to and illustrated by the accompanying Figures of drawings.
28. A method of implanting an implant into a bone tissue structure substantially as hereinbefore described with reference to and illustrated by the accompanying Figures of drawings.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9802571-1 | 1998-07-17 | ||
SE9802571A SE9802571D0 (en) | 1998-07-17 | 1998-07-17 | Implant |
PCT/SE1999/001272 WO2000003657A1 (en) | 1998-07-17 | 1999-07-14 | Implant |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2336251A1 true CA2336251A1 (en) | 2000-01-27 |
CA2336251C CA2336251C (en) | 2011-04-12 |
Family
ID=20412114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2336251A Expired - Lifetime CA2336251C (en) | 1998-07-17 | 1999-07-14 | Implant |
Country Status (15)
Country | Link |
---|---|
US (9) | US6547564B1 (en) |
EP (4) | EP1098606B9 (en) |
JP (1) | JP4278305B2 (en) |
KR (2) | KR20010071941A (en) |
CN (2) | CN1200653C (en) |
AT (2) | ATE412378T1 (en) |
AU (1) | AU745694B2 (en) |
BR (1) | BR9912155B1 (en) |
CA (1) | CA2336251C (en) |
DE (2) | DE69939847D1 (en) |
ES (2) | ES2317441T3 (en) |
IL (2) | IL140489A0 (en) |
RU (1) | RU2231992C2 (en) |
SE (1) | SE9802571D0 (en) |
WO (1) | WO2000003657A1 (en) |
Families Citing this family (162)
Publication number | Priority date | Publication date | Assignee | Title |
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SE9802571D0 (en) * | 1998-07-17 | 1998-07-17 | Astra Ab | Implant |
US6174167B1 (en) | 1998-12-01 | 2001-01-16 | Woehrle Peter S. | Bioroot endosseous implant |
KR100414885B1 (en) * | 2000-12-09 | 2004-01-24 | 주식회사 워랜텍 | Dental implant and head of a compaction drill |
SE0102749D0 (en) * | 2001-08-15 | 2001-08-15 | Astra Tech Ab | Implant, arrangement including an implant, and method of inserting said implant into bone tissue |
EP1460960B1 (en) * | 2001-12-03 | 2010-01-20 | Astra Tech AB | Modified dental implant fixture |
SE523395C2 (en) * | 2001-12-21 | 2004-04-13 | Nobel Biocare Ab | Implants and methods and systems for providing such implants |
KR100487132B1 (en) * | 2003-03-26 | 2005-05-03 | 설영택 | Helical implant |
US8651863B2 (en) * | 2003-04-01 | 2014-02-18 | Robert Schroering | Band of connective tissue grooves for use with a dental implant or a separate abutment for a dental implant |
DE10319036A1 (en) * | 2003-04-25 | 2004-11-25 | Volz, Ulrich, Dr.med.dent. | dental implant |
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US20050033427A1 (en) * | 2003-06-13 | 2005-02-10 | Freilich Martin Allen | Structural/biological implant system |
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