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Uniform stress needle

Info

Publication number
CA2491042A1
CA2491042A1 CA 2491042 CA2491042A CA2491042A1 CA 2491042 A1 CA2491042 A1 CA 2491042A1 CA 2491042 CA2491042 CA 2491042 CA 2491042 A CA2491042 A CA 2491042A CA 2491042 A1 CA2491042 A1 CA 2491042A1
Authority
CA
Grant status
Application
Patent type
Prior art keywords
section
distal
needle
end
uniform
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
Application number
CA 2491042
Other languages
French (fr)
Other versions
CA2491042C (en )
Inventor
Scott Cunningham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Covidien LP
Original Assignee
Tyco Healthcare Group Lp
Scott Cunningham
Priority date (The priority date 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 date listed.)
Filing date
Publication date

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06066Needles, e.g. needle tip configurations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831Material properties
    • A61B2017/0084Material properties low friction
    • A61B2017/00849Material properties low friction with respect to tissue, e.g. hollow organs

Abstract

A linear sugical needle (100) is provided having a body portion including a proximal end section (110); a central section (13); and a distal end section (120). This distal end section has a substantially parabolic configuration for producing a substantially uniform stress profile along a length thereof.

Claims (10)

1. A surgical needle, comprising:
a linear body portion including:
a proximal end section;
a central section; and a distal end section, the distal end section having a substantially parabolic configuration for producing a substantially uniform stress profile along a length thereof.
2. The surgical needle of claim 1, wherein the distal end section has a diameter determined according to the following equation:

d = (((32W)/(.pi..sigma.))*(X n))~(1/3) where d = measured diameter at location X n;
W = load normal to the needle;
X n = distance from a distal-most end of the needle; and .sigma. = chosen stress restraint.
3. The surgical needle of claim 2, wherein the distal end section includes a distal tip having a uniform taper.
4. The surgical needle of claim 3, wherein the distal tip has a length which is substantially equal to a diameter of the central section of the surgical needle.
5. The surgical needle of claim 1, wherein the proximal end section is configured and adapted to secure a suture thereto.
6. The surgical needle of claim 1, wherein the central section has at least one of a rectilinear, circular, oval, triangular, I-beam and ribbon shaped cross-sectional profile.
7. A uniform stress needle, comprising:
a proximal end section configured and adapted to secure a suture thereto;
a central section having a uniform transverse cross-sectional profile; and a distal end section having a parabolic surface profile for producing a substantially uniform stress along a length thereof, the surface profile being defined by the following equation:
d = (((32W)/(.pi..sigma.))*(X n))~(1/3) where d = measured diameter at location X n;
W = load normal to the needle;
X n = distance from a distal-most end of the needle; and .sigma. = chosen stress restraint.
8. The uniform stress needle of claim 7, wherein the distal end section includes a distal tip having a uniform taper.
9. The uniform stress needle of claim 8, wherein the distal tip has a length which is substantially equal to a diameter of the central section of the needle.
10. A surgical needle, comprising:
a body portion including:
a proximal end section;
a central section; and a distal end section, the distal end section having a substantially parabolic configuration for producing a substantially uniform stress profile along a length thereof, the distal end section including a distal tip having a uniform taper.
CA 2491042 2002-07-17 2003-07-15 Uniform stress needle Expired - Fee Related CA2491042C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US39694102 true 2002-07-17 2002-07-17
US60/396,941 2002-07-17
PCT/US2003/022052 WO2004006988A3 (en) 2002-07-17 2003-07-15 Union stress needle

Publications (2)

Publication Number Publication Date
CA2491042A1 true true CA2491042A1 (en) 2004-01-22
CA2491042C CA2491042C (en) 2011-01-25

Family

ID=30116080

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2491042 Expired - Fee Related CA2491042C (en) 2002-07-17 2003-07-15 Uniform stress needle

Country Status (5)

Country Link
US (3) US7063716B2 (en)
CA (1) CA2491042C (en)
EP (1) EP1545326B1 (en)
ES (1) ES2385557T3 (en)
WO (1) WO2004006988A3 (en)

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JPWO2011024817A1 (en) * 2009-08-28 2013-01-31 マニー株式会社 Medical suture needle
WO2011090628A3 (en) 2009-12-29 2011-12-01 Angiotech Pharmaceuticals, Inc. Bidirectional self-retaining sutures with laser-marked and/or non-laser marked indicia and methods
KR20130091662A (en) 2010-04-29 2013-08-19 에티컨, 엘엘씨 High-density self-retaining sutures, manufacturing equipment and methods
CN103068323B (en) 2010-06-11 2015-07-22 伊西康有限责任公司 Suture delivery tools for endoscopic and robot-assisted surgery and methods
WO2012064902A3 (en) 2010-11-09 2012-08-02 Angiotech Pharmaceuticals, Inc. Emergency self-retaining sutures and packaging
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Also Published As

Publication number Publication date Type
US7063716B2 (en) 2006-06-20 grant
US7179277B2 (en) 2007-02-20 grant
EP1545326A2 (en) 2005-06-29 application
ES2385557T3 (en) 2012-07-26 grant
US20060195141A1 (en) 2006-08-31 application
US20040059379A1 (en) 2004-03-25 application
CA2491042C (en) 2011-01-25 grant
EP1545326A4 (en) 2010-06-09 application
WO2004006988A3 (en) 2004-06-24 application
EP1545326B1 (en) 2012-05-30 grant
WO2004006988A2 (en) 2004-01-22 application
US20040059380A1 (en) 2004-03-25 application
US7981137B2 (en) 2011-07-19 grant

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20150715