US20030158556A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distraction pin for fracture fixation
Assignee: Individual
•
Filing: 2002-02-15
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Granted: —
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Expires: 2022-02-15
Abstract
Abstract An internal fixation pin comprises first and second portions with threads of different diameters, but having the same pitch and thread depth. The first portion includes a self-tapping tip. No enlarged head portion is provided to the pin at the end opposite the tip. A non-threaded shaft portion is frangibly connected to the second portion and is a mechanism for rotating the pin for threaded insertion into bone. A plurality of circumferentially spaced-apart longitudinal grooves are provided on the second portion adjacent its intersection with the shaft portion. After insertion of the first and second portions across a fracture, the shaft portion is removed. The grooves permit rotation of the pin for removal should removal be necessary. A driver for pin removal is also provided, as well as a mill tool.
Inventors
- 👤 John Taras
- 👤 Dennis Steffen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:43
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61B17/8605; A61B17/861; A61B17/862; A61B17/16; A61B17/1637; A61B17/8625; A61B17/863; A61B17/88; A61B17/8875; A61B17/8877; A61B17/8883; A61B17/1662; A61B17/1686; A61B17/8645; A61B2017/0046; A61B2017/00464; A61B2017/1602; A61B90/00; A61B90/03; A61B2090/037
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
115 words
1 . A fracture fixation pin, comprising: a) a first portion having a first diameter and first threads of a first thread diameter, said first portion having a tip at one end and a second end; b) a second portion coupled to said second end of said first portion, said second portion having a second diameter larger than said first diameter, and second threads of a second thread diameter larger than said first thread diameter, said second threads extending in a same direction as said first threads; and c) a non-threaded shaft portion coupled to said second portion, said shaft portion having a cross-sectional dimension which does not exceed a dimension of said second diameter.
Claim 2
Dependent Claim
115 words
1 . A fracture fixation pin, comprising: a) a first portion having a first diameter and first threads of a first thread diameter, said first portion having a tip at one end and a second end; b) a second portion coupled to said second end of said first portion, said second portion having a second diameter larger than said first diameter, and second threads of a second thread diameter larger than said first thread diameter, said second threads extending in a same direction as said first threads; and c) a non-threaded shaft portion coupled to said second portion, said shaft portion having a cross-sectional dimension which does not exceed a dimension of said second diameter.
Claim 3
Dependent Claim
19 words
2 . A fracture fixation pin according to claim 1 , wherein: said first and second threads are continuous.
Claim 4
Dependent Claim
20 words
3 . A fracture fixation pin according to claim 1 , wherein: said tip includes a plurality of cutting flutes.
Claim 5
Dependent Claim
29 words
4 . A fracture fixation pin according to claim 1 , wherein: said tip is substantially conical and includes a surface angled at 30° relative to a longitudinal axis.
Claim 6
Dependent Claim
51 words
5 . a fracture fixation pin according to claim 1 , wherein: said first portion has a first length of approximately 2.55 inches and a first diameter of approximately 0.125 inch, and said second portion has a second length of approximately 0.6 inch and a second diameter of approximately 0.015 inch.
Claim 7
Dependent Claim
18 words
6 . A fracture fixation pin according to claim 1 , wherein: said shaft portion is substantially cylindrical.
Claim 8
Dependent Claim
20 words
7 . A fracture fixation pin according to claim 1 , wherein: said shaft is frangibly coupled to second portion.
Claim 9
Dependent Claim
27 words
8 . A fracture fixation pin according to claim 1 , wherein: a channel is provided about said pin between said second portion and said shaft portion.
Claim 10
Dependent Claim
26 words
9 . A fracture fixation pin according to claim 1 , wherein: said shaft has cross-sectional dimension smaller than said second diameter of said second portion.
Claim 11
Dependent Claim
21 words
10 . A fracture fixation pin according to claim 1 , wherein: said pin is not provided with a head portion.
Claim 12
Dependent Claim
23 words
11 . A fracture fixation pin according to claim 1 , wherein: all threads on said first portion have said first thread diameter.
Claim 13
Dependent Claim
18 words
12 . A fracture fixation pin according to claim 1 , wherein: said pin is made of metal.
Claim 14
Dependent Claim
35 words
13 . A fracture fixation pin according to claim 11 wherein: said second portion is provided with a plurality of longitudinal grooves adjacent said shaft portion and spaced-apart about a circumference of said second portion.
Claim 15
Dependent Claim
30 words
14 . A fracture fixation pin according to claim 13 , wherein: said plurality of grooves includes exactly three grooves spaced apart 120° about said circumference of said second portion.
Claim 16
Dependent Claim
25 words
15 . A fracture fixation pin according to claim 13 , wherein: each of said grooves has a depth which extends below said second threads.
Claim 17
Dependent Claim
159 words
16 . A fracture fixation pin system, comprising: a) a pin including i) a first portion having a first diameter and first threads of a first thread diameter, said first portion having a tip at one end and a second end, ii) a second portion coupled to said second end of said first portion, said second portion having a second diameter larger than said first diameter, and second threads of a second thread diameter larger than said first thread diameter, said first and second threads being continuous with each other and having a common pitch and thread depth, and iii) a non-threaded shaft portion coupled to said second portion, said shaft portion having a cross-sectional dimension which does not exceed a dimension of said second diameter, said second portion adjacent said shaft portion defining a plurality of longitudinal spaced apart negative spaces; and b) a driver member including a socket having structure adapted to interfere with said negative spaces.
Claim 18
Dependent Claim
159 words
16 . A fracture fixation pin system, comprising: a) a pin including i) a first portion having a first diameter and first threads of a first thread diameter, said first portion having a tip at one end and a second end, ii) a second portion coupled to said second end of said first portion, said second portion having a second diameter larger than said first diameter, and second threads of a second thread diameter larger than said first thread diameter, said first and second threads being continuous with each other and having a common pitch and thread depth, and iii) a non-threaded shaft portion coupled to said second portion, said shaft portion having a cross-sectional dimension which does not exceed a dimension of said second diameter, said second portion adjacent said shaft portion defining a plurality of longitudinal spaced apart negative spaces; and b) a driver member including a socket having structure adapted to interfere with said negative spaces.
Claim 19
Dependent Claim
42 words
17 . A fracture fixation pin system according to claim 16 , further comprising: c) a mill tool having structure adapted to remove bone and define an opening in the bone into which said socket of said driver member can be inserted.
Claim 20
Dependent Claim
123 words
18 . A fracture fixation pin, comprising: a) a first portion having a first diameter and first threads of a first thread diameter, said first portion having a tip at one end and a second end; and b) a second portion having a first end coupled to said second end of said first portion and a second free end, said second portion having a second diameter larger than said first diameter, and second threads of a second thread diameter larger than said first thread diameter, said first and second threads being continuous with each other and having a common pitch and thread depth, wherein said second free end is provided with a plurality longitudinal grooves spaced-apart about a circumference of said second portion.
Claim 21
Dependent Claim
123 words
18 . A fracture fixation pin, comprising: a) a first portion having a first diameter and first threads of a first thread diameter, said first portion having a tip at one end and a second end; and b) a second portion having a first end coupled to said second end of said first portion and a second free end, said second portion having a second diameter larger than said first diameter, and second threads of a second thread diameter larger than said first thread diameter, said first and second threads being continuous with each other and having a common pitch and thread depth, wherein said second free end is provided with a plurality longitudinal grooves spaced-apart about a circumference of said second portion.
Claim 22
Dependent Claim
29 words
19 . A fracture fixation pin according to claim 18 , wherein: said plurality of grooves includes three grooves spaced apart 120° about said circumference of the second portion.
Claim 23
Dependent Claim
25 words
20 . A fracture fixation pin according to claim 18 , wherein: each of said grooves has a depth which extends below said second threads.
Claim 24
Dependent Claim
151 words
21 . A fracture fixation pin system, comprising: a) a pin including i) a first portion having a first diameter and first threads of a first thread diameter, said first portion having a tip at one end and a second end, and ii) a second portion having a first end coupled to said second end of said first portion and a second free end, said second portion having a second diameter larger than said first diameter, and second threads of a second thread diameter larger than said first thread diameter, said first and second threads being continuous with each other and having a common pitch and thread depth, wherein said second free end is provided with a plurality longitudinal grooves spaced-apart about a circumference of said second portion; and b) a driver member including a socket having structure adapted to interfere with said grooves on said second portion of said pin.
Claim 25
Dependent Claim
151 words
21 . A fracture fixation pin system, comprising: a) a pin including i) a first portion having a first diameter and first threads of a first thread diameter, said first portion having a tip at one end and a second end, and ii) a second portion having a first end coupled to said second end of said first portion and a second free end, said second portion having a second diameter larger than said first diameter, and second threads of a second thread diameter larger than said first thread diameter, said first and second threads being continuous with each other and having a common pitch and thread depth, wherein said second free end is provided with a plurality longitudinal grooves spaced-apart about a circumference of said second portion; and b) a driver member including a socket having structure adapted to interfere with said grooves on said second portion of said pin.
Claim 26
Dependent Claim
42 words
22 . A fracture fixation pin system according to claim 21 , further comprising: c) a mill tool having structure adapted to remove bone and define an opening in the bone into which said socket of said driver member can be inserted.
Claim 27
Dependent Claim
53 words
23 . A fracture fixation pin, comprising: a pin having a threaded portion provided with threads and a shaft portion, said threaded portion including a tip end and an opposite end, said opposite end including a plurality of longitudinal grooves adjacent said shaft portion and spaced-apart about a circumference of said threaded portion.
Claim 28
Dependent Claim
53 words
23 . A fracture fixation pin, comprising: a pin having a threaded portion provided with threads and a shaft portion, said threaded portion including a tip end and an opposite end, said opposite end including a plurality of longitudinal grooves adjacent said shaft portion and spaced-apart about a circumference of said threaded portion.
Claim 29
Dependent Claim
17 words
24 . A fracture fixation pin according to claim 22 , wherein: said grooves interrupt said threads.
Claim 30
Dependent Claim
30 words
25 . A fracture fixation pin according to claim 22 , wherein: said plurality of grooves comprise exactly three grooves spaced apart 120° about the circumference of the threaded portion.
Claim 31
Dependent Claim
30 words
26 . A fracture fixation pin according to claim 22 , wherein: each of said grooves has a depth which extends below said threads at a location of said grooves.
Claim 32
Dependent Claim
58 words
27 . A fracture fixation pin according to claim 22 , wherein: said threaded portion includes a first portion having a first diameter and first threads of a first thread diameter, and a second portion having a second diameter larger than said first diameter and second threads of a second thread diameter larger than said first thread diameter.
Claim 33
Dependent Claim
22 words
28 . A fracture fixation pin according to claim 27 , wherein: said first and second threads are continuous with each other.
Claim 34
Dependent Claim
21 words
29 . A fracture fixation pin according to claim 27 , wherein: said first and second threads have a common pitch.
Claim 35
Dependent Claim
22 words
30 . A fracture fixation pin according to claim 27 , wherein: said first and second threads have a common thread depth.
Claim 36
Dependent Claim
78 words
31 . A fracture fixation pin system, comprising: a) a pin having a first portion provided with threads and a shaft portion, said first portion including a tip end and an opposite end, said opposite end including a plurality of longitudinal grooves adjacent said shaft portion and spaced-apart about a circumference of said first portion; and b) a driver member including a socket having structure adapted to interfere with said grooves on said first portion of said pin.
Claim 37
Dependent Claim
78 words
31 . A fracture fixation pin system, comprising: a) a pin having a first portion provided with threads and a shaft portion, said first portion including a tip end and an opposite end, said opposite end including a plurality of longitudinal grooves adjacent said shaft portion and spaced-apart about a circumference of said first portion; and b) a driver member including a socket having structure adapted to interfere with said grooves on said first portion of said pin.
Claim 38
Dependent Claim
42 words
32 . A fracture fixation pin system according to claim 31 , further comprising: c) a mill tool having structure adapted to remove bone and define an opening in the bone into which said socket of said driver member can be inserted.
References Cited (Backward Citations)
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Cited
US5871486A
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