US6589245B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interference screw
Assignee: Karl Storz SE and Co KG
•
Filing: 2000-10-20
•
Granted: 2003-07-08
•
Expires: 2020-10-20
Abstract
Abstract An interference screw serves for anchoring a flexible transplant like a tendon or a ligament in an opening in a bone. The screw has a screw body, a head at one end of said body and a penetrating end at an opposite end of said head and is provided with an outer threading. The outer threading is formed as a sharp threading adjacent to said penetrating end and is formed as a blunt threading in a following region (FIG. 1 ).
Inventors
- 👤 Andreas Weiler
- 👤 Michael Strobel
- 👤 André Timmermans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:22
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08; A61F2/0811; A61F2002/0817; A61F2002/0841; A61F2002/0847; A61F2002/0858; A61F2002/0876; A61F2002/0882; A61F2210/00; A61F2210/0004; F; F16; F16B; F16B33/00; F16B33/02; Y; Y10; Y10S; Y10S606/00; Y10S606/907; Y10S606/908
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
An interference screw for anchoring a flexible transplant in an opening in a bone, comprising: a screw body, a head at one end of said body, a penetrating end at an opposite end of said head end, an outer threading provided on an outer side of said screw body, wherein said outer threading is formed as a sharp threading adjacent to said penetrating end, and is formed as a blunt threading in a following region following said sharp threading, and wherein said sharp threading extends to a maximum core diameter of said screw body, thereby cutting entrance paths for said blunt threading into a wall of said opening within said bone.
Claim 2
Dependent Claim
111 words
An interference screw for anchoring a flexible transplant in an opening in a bone, comprising: a screw body, a head at one end of said body, a penetrating end at an opposite end of said head end, an outer threading provided on an outer side of said screw body, wherein said outer threading is formed as a sharp threading adjacent to said penetrating end, and is formed as a blunt threading in a following region following said sharp threading, and wherein said sharp threading extends to a maximum core diameter of said screw body, thereby cutting entrance paths for said blunt threading into a wall of said opening within said bone.
Claim 3
Dependent Claim
22 words
The interference screw of claim 1 , wherein at least one 360° thread winding of said body is formed to be sharp.
Claim 4
Dependent Claim
41 words
The interference screw of claim 1 , wherein said penetrating end is tapered, and wherein said sharp threading extends from said penetrating end up to about where a maximum outer diameter of said outer threading in said screw body is reached.
Claim 5
Dependent Claim
19 words
The interference screw of claim 1 , wherein a transition from said sharp to said blunt threading is smooth.
Claim 6
Dependent Claim
16 words
The interference screw claim 1 , wherein said outer threading is formed as a buttress threading.
Claim 7
Dependent Claim
16 words
The interference screw of claim 1 , wherein said screw is made of a biodegradable material.
Claim 8
Dependent Claim
17 words
The interference screw of claim 1 , wherein said screw body is formed as a hollow body.
Claim 9
Dependent Claim
16 words
The interference screw of claim 1 , wherein said screw body is provided with several perforations.
Claim 10
Dependent Claim
18 words
The interference screw of claim 8 , wherein said perforations are provided between windings of said outer threading.
References Cited (Backward Citations)
DE3027138A1
Cited
US5129904A
Cited
US5383878A
Cited
US5242447A
Cited
US5364400A
Cited
EP0669110A2
Cited
FR2717070A1
Cited
US5688285A
Cited
FR2745999A1
Cited
US5968047A
Cited
DE29621340U1
Cited
US5951560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-07-07 | 2007-01-06 | 2007-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-07-07 | 2011-01-06 | 2011-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-07-07 | 2015-01-06 | 2015-07-08 | $7700.00 | Window Closed / Lapsed |