CA2037052A1 - A method and system for inserting spinal catheters - Google Patents

A method and system for inserting spinal catheters

Info

Publication number
CA2037052A1
CA2037052A1 CA2037052A CA2037052A CA2037052A1 CA 2037052 A1 CA2037052 A1 CA 2037052A1 CA 2037052 A CA2037052 A CA 2037052A CA 2037052 A CA2037052 A CA 2037052A CA 2037052 A1 CA2037052 A1 CA 2037052A1
Authority
CA
Canada
Prior art keywords
catheter
cannula
dura
epidural needle
membrane
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
CA2037052A
Other languages
French (fr)
Other versions
CA2037052C (en
Inventor
Daniel E. Andrew
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2037052A1 publication Critical patent/CA2037052A1/en
Application granted granted Critical
Publication of CA2037052C publication Critical patent/CA2037052C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • A61B17/3401—Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia
    • 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
    • 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
    • A61B2017/347—Locking means, e.g. for locking instrument in cannula

Abstract

2037052 9014124 PCTABS00002 A method and a system for inserting spinal catheters for administration of spinal anaesthesia are disclosed. An epidural needle (10) having a hub (22) is inserted into the epidural space of a patient and a cannula (18) having a blunt end (52) is inserted into and advanced forwardly within the epidural needle for abutment against the dura-arachnoid membrane (53) to place the membrane in tension. The cannula is locked in place in the epidural needle by a securing means (32) attached to the hub of the epidural needle.
A flexible catheter (54) having a wire (58) or stylet therein with an end projecting beyond the distal end of the catheter is inserted through the cannula for piercing a hole in the tensioned dura-arachnoid membrane whereby the catheter can be inserted a predetermined distance through the dura-arachnoid membrane into the subarachnoid space. The cannula and epidural needle are removed and the wire withdrawn to allow continuous administering of an anaesthetic through the catheter. A hole can be formed in the dura-arachnoid membrane by a sharp stylet prior to insertion of the catheter.
CA002037052A 1989-05-26 1990-05-24 A method and system for inserting spinal catheters Expired - Fee Related CA2037052C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US357,502 1989-05-26
US07/357,502 US4973312A (en) 1989-05-26 1989-05-26 Method and system for inserting spinal catheters

Publications (2)

Publication Number Publication Date
CA2037052A1 true CA2037052A1 (en) 1991-11-25
CA2037052C CA2037052C (en) 1995-08-01

Family

ID=23405891

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002037052A Expired - Fee Related CA2037052C (en) 1989-05-26 1990-05-24 A method and system for inserting spinal catheters

Country Status (9)

Country Link
US (2) US4973312A (en)
EP (1) EP0428645B1 (en)
AT (1) ATE127698T1 (en)
AU (1) AU638994B2 (en)
CA (1) CA2037052C (en)
DE (1) DE69022366T2 (en)
IE (1) IE80142B1 (en)
IL (1) IL94515A (en)
WO (1) WO1990014124A1 (en)

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Also Published As

Publication number Publication date
ATE127698T1 (en) 1995-09-15
US5160323A (en) 1992-11-03
AU5636590A (en) 1990-12-18
CA2037052C (en) 1995-08-01
EP0428645A1 (en) 1991-05-29
WO1990014124A1 (en) 1990-11-29
IL94515A0 (en) 1991-03-10
US4973312A (en) 1990-11-27
DE69022366T2 (en) 1996-02-29
EP0428645B1 (en) 1995-09-13
IE901904A1 (en) 1991-02-13
IL94515A (en) 1994-08-26
IE901904L (en) 1990-11-26
IE80142B1 (en) 1998-06-03
AU638994B2 (en) 1993-07-15
DE69022366D1 (en) 1995-10-19

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