WO2007127655B1 - Dilating stylet and cannula - Google Patents

Dilating stylet and cannula

Info

Publication number
WO2007127655B1
WO2007127655B1 PCT/US2007/066917 US2007066917W WO2007127655B1 WO 2007127655 B1 WO2007127655 B1 WO 2007127655B1 US 2007066917 W US2007066917 W US 2007066917W WO 2007127655 B1 WO2007127655 B1 WO 2007127655B1
Authority
WO
WIPO (PCT)
Prior art keywords
distal end
cannula
angle
transition portion
instrument set
Prior art date
Application number
PCT/US2007/066917
Other languages
French (fr)
Other versions
WO2007127655A3 (en
WO2007127655A2 (en
Inventor
Thomas A Simonton
Jeff R Justis
Sean M Haddock
Keith M Kinnane
Original Assignee
Warsaw Orthopedic Inc
Thomas A Simonton
Jeff R Justis
Sean M Haddock
Keith M Kinnane
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
Application filed by Warsaw Orthopedic Inc, Thomas A Simonton, Jeff R Justis, Sean M Haddock, Keith M Kinnane filed Critical Warsaw Orthopedic Inc
Publication of WO2007127655A2 publication Critical patent/WO2007127655A2/en
Publication of WO2007127655A3 publication Critical patent/WO2007127655A3/en
Publication of WO2007127655B1 publication Critical patent/WO2007127655B1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3472—Trocars; Puncturing needles for bones, e.g. intraosseus injections
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421—Cannulas
    • A61B17/3423—Access ports, e.g. toroid shape introducers for instruments or hands
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1604—Chisels; Rongeurs; Punches; Stamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1671—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the spine
    • 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
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802—Equipment for handling bone cement or other fluid fillers
    • A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
    • A61B17/8811—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by the introducer tip, i.e. the part inserted into or onto the bone
    • 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
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802—Equipment for handling bone cement or other fluid fillers
    • A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
    • A61B17/8819—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by the introducer proximal part, e.g. cannula handle, or by parts which are inserted inside each other, e.g. stylet and cannula
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B2017/348—Means for supporting the trocar against the body or retaining the trocar inside the body
    • A61B2017/3482—Means for supporting the trocar against the body or retaining the trocar inside the body inside
    • A61B2017/349—Trocar with thread on outside
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03—Automatic limiting or abutting means, e.g. for safety
    • A61B2090/033—Abutting means, stops, e.g. abutting on tissue or skin
    • A61B2090/034—Abutting means, stops, e.g. abutting on tissue or skin abutting on parts of the device itself
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/02—Bones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0102—Insertion or introduction using an inner stiffening member, e.g. stylet or push-rod

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgical Instruments (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

An instrument set is provided that has a tapered configuration that facilitates the insertion of the instrument set into a patient. Said set comprises a stylet (200) and a cannula (100) having a body (102) and a distal end (106).

Claims

AMENDED CLAIMS received by the International Bureau on 20 March 2008 (20.03.2008)
1. A surgical instrument set comprising: a cannula having a distal end, a proximal end, a passage therethrough, and a mid-longirudinal axis, said passage at said distal end having a reduced dimension transverse to the mid-longitudinal axis less than the maximum dimension of said passage transverse to th]e raid-longitudinal axis, said distal end having an outer perimeter converging all an angle toward the mid-longitudinal axis of said cannula; and a stylet having a distal end, a proximal end, and a tapered transition portion proximate said distal end, said tapered transition portion having an angle approximating the converging angle of said outer perimeter of said distal end of said cannula, said stylet being sized and configured to be inserted into said passage of said cannula, at least a portion of said tapered transition portion and said distal end of said stylet being configured to pass through said reduced dimension of said cannula and extend beyond said distal end of said cannula.
2. The instrument set of cljaim 1 , wherein the angle of said tapered transition portion and the converging angle of said outer perimeter of said distal end are the same.
3. The instrument set of claim 1 , wherein the angle of said tapered transition portion and the converging angle of said outer perimeter of said distal end are within 5 degrees of each other.
4. The instrument set of cllaim 1, wherein the angle of said tapered transition portion and the converging angje of said outer perimeter of said distal end are within 15 degrees of each other.
5. The instrument set of cllaira 1 , wherein said stylet has a mid-longitudinal axis and the angle of said tapered transition portion relative to the mid-longitudinal axis of said stylet is in the rang|e of approximately 10 to 45 degrees.
6. The instrument set of claim 1 , wherein the converging angle of said outer perimeter of said distal end relative to the mid-longitudinal axis of said cannula is in the range of approximately 10 to 45 degrees.
7. The instrument set of cjaim 1 , wherein said tapered transition portion of said stylet is adjacent said converging outer perimeter of said distal end of said cannula.
AMENDED CLAIMS (ARTICLE 19)
8. The instrument set of claim 1, wherein said outer perimeter of said distal end of said cannula includes a plurality of serrations.
9. The instrument set of claim I3 wherein said cannula has an exterior surface including a thread for engaging said cannula to bone.
10. The instrument set of claim 1 , wherein said distal end of said stylet has a tip and a length as measured from said tip to said tapered transition portion, said length being greater than the length of said transition portion.
11. A surgical instrument set comprising: a cannula having a distal end, a proximal end, a passage therethrough, and a mid-longitudinal axis, said distal end having an outer perimeter converging at an angle toward the mid-løngitudinal axis of said cannula; a stylet having al distal end, a proximal end, and a tapered transition portion proximate said distal eπ|d, said tapered transition portion having an angle approximating the conv|erging angle of said outer perimeter of said distal end of said cannula, said styletj being sized and configured to be inserted into said passage of said cannula, at least a portion of said tapered transition portion and said distal end of said stylet being configured to extend beyond said distal end of said cannula; and a stop on said stylet to prevent said stylet from passing through said cannula.
12. The instrument set of claim 11, wherein the angle of said tapered transition portion and the converging angle of said outer perimeter of said distal end are the same.
13. The instrument set of claim 11, wherein the angle of said tapered transition portion and the converging angle of said outer perimeter of said distal end are within 5 degrees of each other.
14. The instrument set of claim 11, wherein the angle of said tapered transition portion and the converging angle of said outer perimeter of said distal end are within 15 degrees of each other.
15. The instrument set of claim 11, wherein said stylet has a mid-longitudinal axis and the angle of said tapered transition portion relative to the mid-longitudinal axis of said stylet is in the range of approximately 10 to 45 degrees.
AMENDED CLAIMS (ARTICLE 19)
16. The instrument set of claim 11, wherein the converging angle of said outer perimeter of said distal end relative to the mid-longitudinal axis of said cannula is in the range of approximately 10 to 45 degrees.
17. The instrument set of claim 11 , wherein said tapered transition portion of said stylet is adjacent said converging outer perimeter of said distal end of said cannula.
18w The instrument set of claim 11 , wherein said outer perimeter of said distal end of said cannula includes a plurality of serrations.
19. The instrument set of ciaim 11, wherein said cannula has an exterior surface including a thread for epgaging said cannula to bone.
20. The instrument set of claim ϊ 1 , wherein said distal end of said stylet has a tip and a length as measured frorp said tip to said tapered transition portion, said length being greater than the lφngth of said transition portion.
AMENDED CLAIMS (ARTICLE 19)
PCT/US2007/066917 2006-04-27 2007-04-19 Dilating stylet and cannula WO2007127655A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/412,342 US7892207B2 (en) 2006-04-27 2006-04-27 Dilating stylet and cannula
US11/412,342 2006-04-27

Publications (3)

Publication Number Publication Date
WO2007127655A2 WO2007127655A2 (en) 2007-11-08
WO2007127655A3 WO2007127655A3 (en) 2008-03-06
WO2007127655B1 true WO2007127655B1 (en) 2008-05-15

Family

ID=38474105

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/066917 WO2007127655A2 (en) 2006-04-27 2007-04-19 Dilating stylet and cannula

Country Status (2)

Country Link
US (2) US7892207B2 (en)
WO (1) WO2007127655A2 (en)

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US20070255282A1 (en) 2007-11-01
WO2007127655A2 (en) 2007-11-08

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