Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
  • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
  • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
  • A61B17/06004—Means for attaching suture to needle
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
  • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
  • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
  • A61B17/06166—Sutures
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
  • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
  • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
  • A61B17/06004—Means for attaching suture to needle
  • A61B2017/06028—Means for attaching suture to needle by means of a cylindrical longitudinal blind bore machined at the suture-receiving end of the needle, e.g. opposite to needle tip
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
  • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
  • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
  • A61B17/06066—Needles, e.g. needle tip configurations
  • A61B2017/061—Needles, e.g. needle tip configurations hollow or tubular

Definitions

• the invention relates to a new and original method for manufacturing a surgical needle intended for holding, by crimping, a suture thread; said needle being of the type comprising a point, a body and an eye provided with an axial hole of diameter and depth adapted to contain the end of the suture to be crimped.
• the invention also relates to the needle obtained by the implementation of said method
• Known surgical suturing needles are of two types linked to their shape which is either curved or straight: - curved needles represent more than 90% of sales and are more particularly intended for internal use;
• - straight needles are more particularly intended for external use (skin).
• - triangular needles are used in other cases (skin, muscles).
• the diameter of the needles generally varies from 0.24 to 1.57 mm and their length varies respectively from 8.5 to 100 mm.
• the diameter of the axial holes generally varies, depending on the diameters of the needles, from 0.10 to 1 mm and their depth varies respectively from 0.30 to 3 mm.
• the type of suture for example single or multi-thread.
• the needles in question are entirely made of martensitic type steel which is subjected to a heat treatment (soaking) after drilling the eye.
• the invention therefore aims to produce a surgical needle, with a single eye for the full range of diameters of sutures intended to equip a surgical needle of well-defined diameter, the aims of which are pursued, the means used and the results obtained are totally different from those taught in the known state of the art.
• the method according to the invention is essentially characterized in that it consists in carrying out, on a surgical needle, entirely made of steel of the austenitic type, in the area of the eye, a local heat treatment suitable for:
• the needle obtained by the implementation of said method is essentially characterized in that it comprises an eye provided with an axial, cylindrical hole, the diameter and the depth of which are unique for the full range of diameters of the sutures intended to equip a needle with a well-defined diameter.
• the characteristics and advantages of the invention will appear more clearly on reading the detailed description which follows of at least one preferred embodiment of the latter given by way of nonlimiting example and represented in the appended drawing (FIG. single) which is a side view of a needle and the suture intended to be crimped there.
• the assembly shown comprises a surgical needle (1), of diameter (D1), intended to hold, by crimping, a suture thread (2) of diameter (D3). It comprises a point (1A), a body (1B) and an eye (1C) provided with an axial hole (3), of diameter (D2) and of depth (P), adapted to contain the end (2A) suture thread (2) to be crimped.
• the method of manufacturing the surgical needle according to the invention consists in carrying out, on said needle (1), which is entirely made of steel of the austenitic type, only in the area of the eye (1C), a heat treatment suitable for: - on the one hand, allow the mechanical drilling of the axial hole (3) whose diameter (D2), unique, is determined as a function of the diameter (D1) of the needle (1) and the diameter (D3) of the wire suture (2) of larger diameter belonging to the full range of suture threads intended to equip a needle of given diameter (D1); - on the other hand, obtaining a ductility allowing a reduction, by crushing during crimping, of the initial diameter (D2) of the axial hole (3) of depth (P), at least equal to 50%.
• This ductility is obtained for a "Vickers" hardness of the austenitic steel between 280 and 380 Hv and more restrictively between 300 and 340 Hv.
• Said heat treatment consists in subjecting said zone (1C) to a temperature of between 850 and 1000 ° C for a period of between 0.3 and 1 second.
• the heat source used to carry out said heat treatment of said zone (1C) is by laser radiation (precision, instantaneousness, molecular aspect).
• the surgical needle to be sutured obtained by the implementation of said method comprises an eye (1 C) provided with an axial hole (3) whose diameter (D2) is unique for the full range of diameters (D3) of suture (2) intended to equip a needle of given diameter (D1).
• Said axial hole (3) also has a depth (P) unique for said range of sutures (2).
• the diameter (D1) of the needle can vary from 0.24 to 1.57 mm.
• the diameter (D2) of the axial hole (3) of the eye (1C) can vary from 0.12 to 1.04 mm.

Landscapes

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

Applications Claiming Priority (3)

Publications (1)

Family

ID=8871186

Family Applications (1)

Country Status (4)

Family Cites Families (6)

• 2002
  • 2002-01-07 FR FR0200142A patent/FR2834441B1/fr not_active Expired - Lifetime
• 2003
  • 2003-01-07 AU AU2003214293A patent/AU2003214293A1/en not_active Abandoned
  • 2003-01-07 WO PCT/FR2003/000023 patent/WO2003057047A1/fr not_active Application Discontinuation
  • 2003-01-07 EP EP03709858A patent/EP1460944A1/de not_active Withdrawn

Non-Patent Citations (2)

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