EP4199835A1 - Procédé de production d'un instrument chirurgical pour saisir et/ou maintenir et/ou guider une aiguille - Google Patents

Procédé de production d'un instrument chirurgical pour saisir et/ou maintenir et/ou guider une aiguille

Info

Publication number
EP4199835A1
EP4199835A1 EP21765903.6A EP21765903A EP4199835A1 EP 4199835 A1 EP4199835 A1 EP 4199835A1 EP 21765903 A EP21765903 A EP 21765903A EP 4199835 A1 EP4199835 A1 EP 4199835A1
Authority
EP
European Patent Office
Prior art keywords
arm part
solder
distal holding
hard metal
recess
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.)
Pending
Application number
EP21765903.6A
Other languages
German (de)
English (en)
Inventor
Tom Schweitzer
Corvin Motz
Andreas Deutschendorf
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.)
Aesculap AG
Original Assignee
Aesculap AG
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 Aesculap AG filed Critical Aesculap AG
Publication of EP4199835A1 publication Critical patent/EP4199835A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • 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
    • A61B17/062—Needle manipulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3033—Ni as the principal constituent
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00526—Methods of manufacturing

Definitions

  • the invention relates to a method for producing a surgical instrument for grasping and/or holding and/or guiding a needle, in particular a surgical needle.
  • Special surgical instruments in particular surgical needle holders, are used to grasp, hold and guide a surgical needle.
  • Surgical needle holders have two arm parts which are mirror images of one another and which are pivoted relative to one another at a joint or articulation point.
  • the arm parts each have a distal holding or clamping jaw with a hard metal insert.
  • the hard metal inserts are used in recesses in the holding or clamping jaws.
  • the occurrence of profile wear can advantageously be slowed down by the hard metal inserts.
  • the carbide inserts can have a cross-shaped profile, with the profile being pressed in the form of pyramids or being ground with diamond tools in a pyramid-shaped pattern.
  • the hard metal inserts are connected in a so-called brazing process using a silver solder with hardened arm parts, which are provided for the manufacture of surgical needle holders.
  • the disadvantage here is that brazing requires temperatures which are problematic with regard to microstructural transformations and accordingly also with regard to corrosion resistance. This applies in particular when the arm parts are made of a martensitic material.
  • Another disadvantage is that silver hard solders themselves can show black discolouration over time due to the preparation of the instruments.
  • the hard metal inserts can be connected to arm parts provided for the production of surgical needle holders in a so-called vacuum high-temperature soldering process during a hardening process.
  • the disadvantage here is that due to the large temperature differences during the hardening process, the different thermal expansion coefficients of a base or carrier material used for the arm parts (usually stainless steel) and a hard metal used for the hard metal inserts have a significant effect, so that even with correct positioning of the Carbide inserts in the recesses of the holding and clamping jaws can lead to relative movements in a hardening furnace.
  • the object of the invention is to provide a method for producing a surgical instrument for grasping and/or holding and/or guiding a needle, in particular a surgical needle, which partially or completely avoids the disadvantages occurring in generic methods and in particular for a surgical instrument for grasping and/or holding and/or guiding a needle, in particular a surgical needle, with increased stability and corrosion resistance.
  • the invention relates to a method for producing a surgical instrument for guiding and/or holding and/or grasping a needle, in particular a surgical needle.
  • the surgical instrument is preferably a surgical needle holder or surgical tweezers.
  • the method has the following steps, in particular in chronological order: a) providing a first arm part and a second arm part, the first arm part and the second arm part each having a distal holding jaw with a recess and a solder depot, in particular in the form of a cavity, in a free end or within a free end of the distal holding jaw, b) inserting a hard metal insert into the recess of the distal holding jaw of the first arm part and inserting a hard metal insert into the recess of the distal holding jaw of the second arm part, c) joining or connecting the first arm part and the second arm part, preferably wherein the first arm part and the second arm part are mounted pivotably in relation to one another at a joint or articulation point in the joined or connected state,
  • solder depot is to be understood in the sense of the present invention as a depot, ie a storage or storage facility, which is designed or set up to be filled with a solder and to keep or store the solder after filling, ie to keep in stock.
  • distal in the context of the present invention is intended to mean pointing away from a human or animal body center or located further away from a human or animal body center.
  • proximal in the context of the present invention is intended to mean pointing to the center of a human or animal body or located closer to a center of a human or animal body.
  • solder depots integrated in the free ends of the distal holding jaws By using solder depots integrated in the free ends of the distal holding jaws, metering of the amount of solder required for soldering and control of the solder flow during the soldering process can be achieved with particular advantage. This eliminates the use of excess solder, oversized carbide inserts and solder stops.
  • the metering of the amount of solder can advantageously be determined via a volume of the solder depot.
  • the control of the solder flow is preferably based on capillary action, as a result of which the solder can be drawn into a solder gap located between the inserted hard metal inserts and the distal holding jaws, with the capillary effect breaking off at the end of the solder gap and the solder no longer flowing.
  • any grinding process that follows the soldering process can be limited to a dimensional adjustment between the hard metal inserts and the distal holding jaws and to the removal of any solder residues that may be present. As a result, the amount of expensive hard metal used can be reduced.
  • the method according to the invention is thus characterized overall by improved process reliability and, in particular, by a reduction in manual work steps. As a result, a higher product quality can be achieved.
  • Manufacturing costs can also be reduced by avoiding scrap and reducing the amount of work involved.
  • hard metal insert is to be understood in the context of the present invention as meaning an insert which has a hard metal, in particular as the main component, or consists of a hard metal.
  • hard metal should be understood to mean a metal matrix composite material in which hard materials, which are present as small particles, are held together by a matrix made of metal or an alloy.
  • hard metals are a little less hard than pure hard materials, but significantly tougher.
  • they are harder than pure metals, alloys and hardened steel.
  • the first arm part and the second arm part are preferably constructed as mirror images of one another.
  • the first arm part preferably has a first grip part, in particular a first finger opening, on a proximal end, and the second arm part has a second grip part, in particular a second finger opening, on a proximal end.
  • the first arm part and the second arm part each have a high-grade steel as base or carrier material.
  • the first arm part and the second arm part can each consist largely or entirely of stainless steel.
  • the stainless steel is preferably a corrosion-resistant stainless steel, preferably a corrosion-resistant, martensitic stainless steel, particularly preferably a corrosion-resistant, martensitic stainless steel with the material number 1.4021.
  • Carbide inserts are preferably used as hard metal inserts, which have a metal matrix of cobalt and/or nickel and a hard material selected from the group consisting of tungsten carbide (WC), titanium carbide (TiC), titanium nitride (TiN), niobium carbide, tantalum carbide, vanadium carbide and mixtures of them.
  • the hard metal inserts can each have a nickel content of 8% by weight to 20% by weight and a metal carbide content, in particular tungsten carbide content, of 80% by weight to 92% by weight, based on the total weight of a respective hard metal insert.
  • the hard metal inserts preferably also have a profiled, in particular corrugated or toothed, surface, preferably a surface with a cross-shaped profile and/or pyramid-shaped indentation.
  • the hard metal inserts can have a circumferential chamfer.
  • the hard metal inserts for example with a toothed profile, a circumferential chamfer and a shape complementary to the shape of the recesses of the distal holding jaws, are particularly preferably produced by a near-net-shape shaping process.
  • the surgical instrument which is produced by means of the method according to the invention can have a locking device (lock) in the form of locking arms with latching hooks which extend away in the vicinity of the above-mentioned handle parts and point towards one another.
  • a locking device in the form of locking arms with latching hooks which extend away in the vicinity of the above-mentioned handle parts and point towards one another.
  • latching hooks of the locking arms can positively engage with one another, so that a thread or a corresponding needle located between the distal retaining jaws is automatically retained.
  • This locking (lock) can be released by a user operating the surgical instrument by further squeezing the handle parts together and moving them slightly apart along the plane of the holding jaws. The surgical instrument and distal clamps can then be opened.
  • the hard metal inserts when carrying out step b), are inserted in a form-fitting manner into the recesses of the distal holding jaws.
  • a high degree of fitting and positioning accuracy can be achieved.
  • displacements of the hard metal inserts can be avoided completely or at least to a large extent in this way.
  • a nose-shaped form-fitting section of the hard metal inserts when carrying out step b), is inserted into a complementary (ie shape-complementary) area of the recess of the distal holding jaws and held by this in a form-fitting manner.
  • the nose-shaped form-fitting section basically allows a displacement between the hard metal insert and the arm part or distal holding jaw while performing step e) (due to a different material expansion of the hard metal and a base or carrier material, preferably stainless steel, of the arm parts). Nevertheless, correct alignment, in particular centering, of the hard metal inserts can be ensured with particular advantage by the nose-shaped form-fitting section.
  • the solder depots are each designed as a cavity, in particular as an elongate or elongated, in particular channel-shaped, cavity.
  • the cavity particularly preferably extends in the axial direction of the distal holding jaw.
  • the cavity can have a polygonal, in particular triangular, quadrangular, pentagonal or hexagonal cross section.
  • the cavity preferably has a cornerless, in particular circular, oval or elliptical, cross section.
  • a particularly targeted control of a solder flow when carrying out step e) can advantageously be achieved in particular by an elongate or elongate configuration of the cavity.
  • the cavity has an inside diameter of 0.3 mm to 2 mm, preferably 0.8 mm to 1.2 mm, and/or a length of 4 mm to 15 mm, preferably 7 mm to 12 mm .
  • the amount of solder for carrying out step e) can be controlled with particular advantage via the inner diameter and/or the length of the cavity. Otherwise, the advantage mentioned in the previous paragraph applies accordingly.
  • step c) is carried out between steps b) and e), in particular between steps b) and d).
  • the first arm part and the second arm part can be screwed together at the joint or joint point with the aid of a screw, in particular a locking screw.
  • the solder depots are each formed on the face side at the free end of the distal holding jaws Entry opening filled with the solder.
  • the solder depots can be filled with the solder, for example with the aid of a dosing aid, in particular a syringe.
  • step d) is carried out between steps b) and e), in particular between steps c) and e).
  • the solder is a nickel solder, ie a nickel alloy or alloy containing nickel (according to EN ISO 17672), in particular selected from the group consisting of Ni600, Ni610, Ni612, Ni620, Ni630, Ni631, Ni650, Ni700, Ni710, Ni720 , Ni800 and mixtures thereof.
  • the nickel solder Ni600 is preferably a nickel alloy with a melting temperature range of 980 °C to 1060 °C, the nickel alloy consisting of the following components:
  • the nickel solder Ni610 is preferably a nickel alloy which has a melting temperature range of 980 °C to 1070 °C and consists of the following components:
  • the nickel solder Ni612 is preferably a nickel alloy which has a melting point of 1055 °C and consists of the following components:
  • the nickel solder Ni620 is preferably a nickel alloy which has a melting temperature range of 970 °C to 1000 °C and consists of the following components:
  • the nickel solder Ni630 is preferably a nickel alloy which has a melting temperature range of 980 °C to 1040 °C and consists of the following components:
  • the nickel solder Ni631 is preferably a nickel alloy which has a melting temperature range of 980° C. to 1070° C. and consists of the following components:
  • the nickel solder Ni650 is preferably a nickel alloy which has a melting temperature range of 1080 °C to 1135 °C and consists of the following components:
  • the nickel solder Ni700 is preferably a nickel alloy which has a melting point of 875 °C and consists of the following components:
  • the nickel solder Ni710 is preferably a nickel alloy which has a melting point of 890 °C and consists of the following components:
  • the nickel solder Ni720 is preferably a nickel alloy which has a melting temperature range of 880 °C to 950 °C and consists of the following components:
  • the nickel solder Ni800 is preferably a nickel alloy which has a melting temperature range of 980 °C to 1010 °C and consists of the following components:
  • the aforementioned nickel solders are particularly preferred according to the invention, since their melting temperature ranges or melting temperatures are compatible with the temperatures required for hardening the arm parts, in particular joined arm parts. As a result, when step e) is carried out, a hardening of the arm parts, in particular joined arm parts, can also be achieved with particular advantage.
  • step e) when step e) is carried out, the solder emerges from an outlet opening in the solder depot, which opens into a bottom of the recess in the distal holding jaws.
  • the solder preferably escapes from the solder depots into the base of the recess of the distal holding jaws under the action of a capillary force. This in turn has the consequence that the solder from the solder depot can be distributed evenly in the solder gaps formed between the hard metal inserts and the distal holding jaws, without escaping from the solder gaps. Furthermore, it can be avoided that the distal holding jaws are soldered to one another while step e) is being carried out.
  • the inlet opening and the outlet opening are arranged at an acute angle or at right angles to one another.
  • the arm parts in particular joined arm parts, are preferably clamped or suspended for carrying out step e) by means of a suspension device in such a way that the free ends of the distal holding jaws are oriented with the solder depots facing up.
  • the solder can be distributed particularly well between the solder gaps formed between the hard metal inserts and the distal holding jaws as a result of its liquefaction and supported by gravity and preferably capillary action when carrying out step e).
  • Step e) is more preferably carried out in a vacuum or inert gas furnace, for example with a hydrogen or argon atmosphere.
  • Step e) is particularly preferably carried out in a high-temperature soldering process, in particular in accordance with DIN 8593-7.
  • Hardening of the arm parts can also be achieved with particular advantage, in particular through step e).
  • the arm parts or the surgical instrument produced by means of the method according to the invention can achieve an HRC hardness (Rockwell hardness) of 42 HRC to 50 HRC.
  • An independent curing step, in particular before carrying out step e), is therefore not necessary. This represents a (further) simplification of the process sequence, as a result of which time and costs in particular can be saved.
  • step e) after step e) has been carried out, the method also has a step f) of removing the solder deposits.
  • the solder depots are each removed by breaking a predetermined breaking line or predetermined breaking point/thin place.
  • the predetermined breaking lines or predetermined breaking points/thin areas each preferably extend in the circumferential direction of the distal holding jaws.
  • the predetermined breaking lines or predetermined breaking points/thin areas are particularly preferably formed between the free end of the distal holding jaws, which has the solder depot, and a solder depot-free section of the distal holding jaws adjoining the free end of the distal holding jaws.
  • the predetermined breaking lines or predetermined breaking points/thin places can be designed, for example, as perforations, notches or scratches.
  • the predetermined breaking lines or predetermined breaking points/thin areas advantageously allow easy manual removal of the (external) solder depots by breaking, in particular without the use of additional tools and in particular without the risk of damaging the arm parts and therefore the surgical instrument to be manufactured.
  • the free ends of the distal holding jaws can be ground down to the predetermined breaking lines or predetermined breaking points/thin areas when carrying out step f).
  • the method can have a further step g) grinding the hard metal inserts used and/or the distal holding jaws.
  • the arm parts of the surgical needle holder were made from a sheet of stainless steel (1.4021) with a strength, i.e. thickness, of 5.5 mm. Then a recess for a joint closure as well as a recess in the area of the distal retaining jaws of the arm parts were created by milling. Furthermore, hollow solder depots were created in the free ends of the distal holding jaws by means of drilling.
  • the hard metal inserts to be inserted into the recesses of the distal holding jaws were manufactured using a near-net-shape shaping process.
  • the hard metal inserts produced accordingly each had a tooth profile, a circumferential chamfer on the tooth profile and a suitable outer shape for insertion into the recesses of the distal holding jaws.
  • Corresponding hard metal inserts could be produced, for example, by means of pressing or MIM (Metal Injection Molding). The hard metal inserts produced in this way were then sintered.
  • the hard metal inserts were then placed in the recesses of the distal holding jaws with a form fit. After that, the arm parts were fixed with a rivet pin and locked by means of a locking device.
  • the solder depots were filled to the top edge with a high-temperature nickel-based solder in accordance with EN ISO 17672 using a dosing device or a syringe. Any excess solder has been removed.
  • the surgical needle holder was then hung in a hanger in such a way that the free ends of the distal holding jaws of the arm parts were oriented upwards. The needle holder thus suspended was placed in a hardening furnace.
  • a vacuum high-temperature soldering process was then carried out in accordance with DIN 8593-7.
  • the hard metal inserts were not only soldered to the arm parts of the surgical needle holder, but the base or carrier material (stainless steel) of the instrument was also hardened at the same time.
  • the base or carrier material achieved a hardness of 42 HRC to 50 HRC.
  • the free ends of the distal holding jaws containing the solder depot were then removed. These ends were removed by breaking predetermined breaking lines, which were formed in the circumferential direction of the distal holding jaws and between the free ends containing the solder depot and the solder depot-free holding jaw sections adjoining them.
  • the surgical needle holder was then ground to compensate for any tolerance differences between the carbide inserts and the base or carrier material of the needle holder, and to remove any residual solder.
  • FIG. 2 a detailed view of a hard metal insert and a distal holding jaw of a preliminary stage of a surgical instrument according to FIG.
  • FIG. 3 a detailed view of a hard metal insert and a distal holding jaw of a preliminary stage of a surgical instrument according to FIG. 1 in the assembled state DETAILED FIGURE DESCRIPTION
  • the surgical instrument 1 shown schematically in FIG. 1 is a surgical needle holder.
  • the surgical needle holder has a first arm part 10 and a second arm part 10', which are mounted at a pivot point 20 such that they can pivot in relation to one another.
  • the first arm part 10 and the second arm part 10' are mirror images of each other.
  • Both the first arm part 10 and the second arm part 10' each have a holding jaw 30, 30' (so-called distal holding jaws) at their distal end.
  • the distal holding jaws 30, 30' each have a hard metal insert 40, 40'.
  • the hard metal inserts 40, 40' are each inserted in a form-fitting manner in a recess in the distal holding jaws 30, 30'.
  • the arm parts 10 and 10' each have a grip part 50, 50' in the form of a finger opening.
  • a locking device 60 which is formed by two locking arms 62, 64, is located between the distal holding jaws 30, 30' and the two handle parts 50, 50'.
  • the first locking arm 62 protrudes from the first arm part 10 in the direction of the second arm part 10'.
  • the second locking arm 64 protrudes from the second arm part 10 'in the direction of the first arm part 10, so that by means of latching hooks (not shown), which are attached to the first locking arm 62, and latching hooks 65, which are attached to the second locking arm 64, a Latching or locking of the two locking arms 62 and 64 and thus the surgical needle holder 1 is possible.
  • the latching hooks of the first locking arm 62 and the latching hooks 65 of the second locking arm 64 are designed in such a way that a positive locking is achieved when the handle parts 50, 50' are pressed together.
  • the latching hooks can, for example, be designed in the shape of a shark tooth.
  • FIG. 2 schematically shows a detailed view of a hard metal insert 40 and a distal holding jaw 30 of a preliminary stage of the surgical instrument 1 shown in FIG. 1 in the non-assembled state.
  • the hard metal insert 40 is preferably designed in the form of a small plate and preferably has a cross-shaped profile 41 .
  • the distal holding jaw 30 has a recess 31 complementary to the shape of the hard metal insert 40.
  • a hollow solder depot 35 is formed in the free end 33 of the distal holding jaw 30 (see Fig. 3), with an outlet opening 36 of the solder depot 35 in the bottom 32 of the Recess 31 opens.
  • FIG. 3 schematically shows a detailed illustration of a hard metal insert 40 and a distal holding jaw 30 of a preliminary stage of the surgical instrument 1 illustrated in FIG. 1 in the assembled state.
  • the solder depot 35 is preferably designed as an elongated or channel-shaped cavity which extends in the axial direction of the distal holding jaw 30 .
  • the solder depot 35 has an inlet opening 37 for filling the solder depot 35 with a solder on the end face 34 of the free end 33 of the distal holding jaw 30 .
  • the advantages of the method according to the invention should be summarized again as follows:

Landscapes

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

Abstract

L'invention concerne un procédé de production d'un instrument chirurgical pour saisir et/ou maintenir et/ou guider une aiguille, comprenant les étapes suivantes consistant à : a) fournir une première partie de bras (10) et une seconde partie de bras (10'), la première partie de bras (10) et la seconde partie de bras (10') comprenant chacune une mâchoire de maintien distale (30, 30') comportant un évidement et une région de dépôt de brasure dans une extrémité libre de la mâchoire de maintien distale (30, 30') ; b) insérer un insert métallique dur (40) dans l'évidement de la mâchoire de maintien distale (30) de la première partie de bras (10) et insérer un insert métallique dur (40') dans l'évidement de la mâchoire de maintien distale (30') de la seconde partie de bras (10') ; c) assembler la première partie de bras (10) et la seconde partie de bras (10'), et lorsque la première partie de bras est assemblée, la première partie de bras (10) et la seconde partie de bras (10') étant montées de manière à pouvoir pivoter l'une par rapport à l'autre au niveau d'une articulation (20) ; d) remplir la région de dépôt de brasure de la première partie de bras (10) et remplir la région de dépôt de brasure de la seconde partie de bras (10') avec de la brasure dans chaque cas ; et e) souder l'insert métallique dur (40) inséré dans l'évidement dans la mâchoire de maintien distale (30) de la première partie de bras (10) à la première partie de bras (10) et souder l'insert métallique dur (40') inséré dans l'évidement dans la mâchoire de maintien distale (30') de la seconde partie de bras (10') à la seconde partie de bras (10'), dans chaque cas en utilisant la brasure.
EP21765903.6A 2020-08-21 2021-08-19 Procédé de production d'un instrument chirurgical pour saisir et/ou maintenir et/ou guider une aiguille Pending EP4199835A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020210664.9A DE102020210664A1 (de) 2020-08-21 2020-08-21 Verfahren zum Herstellen eines chirurgischen Instruments zum Fassen und/oder Halten und/oder Führen einer Nadel
PCT/EP2021/073062 WO2022038234A1 (fr) 2020-08-21 2021-08-19 Procédé de production d'un instrument chirurgical pour saisir et/ou maintenir et/ou guider une aiguille

Publications (1)

Publication Number Publication Date
EP4199835A1 true EP4199835A1 (fr) 2023-06-28

Family

ID=77640684

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21765903.6A Pending EP4199835A1 (fr) 2020-08-21 2021-08-19 Procédé de production d'un instrument chirurgical pour saisir et/ou maintenir et/ou guider une aiguille

Country Status (6)

Country Link
US (1) US20240024974A1 (fr)
EP (1) EP4199835A1 (fr)
JP (1) JP2023540203A (fr)
CN (1) CN116056647A (fr)
DE (1) DE102020210664A1 (fr)
WO (1) WO2022038234A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9508328D0 (en) * 1995-04-25 1995-06-14 Univ Nottingham Surgical gripping device
DE29713631U1 (de) 1997-07-31 1997-10-02 Aesculap AG & Co. KG, 78532 Tuttlingen Chirurgisches Instrument
DE202004008169U1 (de) 2004-05-19 2004-07-29 Lawton Gmbh & Co. Kg Chirurgischer Nadelhalter
US20140100564A1 (en) * 2012-10-08 2014-04-10 Covidien Lp Jaw assemblies for electrosurgical instruments and methods of manufacturing jaw assemblies
DE102020105886A1 (de) * 2020-03-05 2021-09-09 Aesculap Ag Instrumentenhalbzeug und medizinisches Instrument

Also Published As

Publication number Publication date
WO2022038234A1 (fr) 2022-02-24
DE102020210664A1 (de) 2022-02-24
US20240024974A1 (en) 2024-01-25
JP2023540203A (ja) 2023-09-22
CN116056647A (zh) 2023-05-02

Similar Documents

Publication Publication Date Title
AT506133B1 (de) Reibrührschweisswerkzeug
DE2013198C3 (de) Verfahren zur Herstellung von diamanthaltigen Körpern
DE60214821T2 (de) Orthodontische Vorrichtung
EP3019244B1 (fr) Pointe d'écarteur pour un appareil de sauvetage
DE69802051T2 (de) Legierungen zum Verbinden auf Sinterkarbid, und damit hergestellte Verbundwerkstoffe
DE2919375C2 (de) Anwendung eines Verfahrens zur Herstellung eines Schichtkörpers
EP3368241B1 (fr) Outil de soudage par friction malaxage
DE2521377A1 (de) Zerspanwerkzeug und verfahren zu seiner herstellung
DE3500931C2 (fr)
AT16111U1 (de) Schneidwerkzeug
DE3219260A1 (de) Verfahren zum einbringen eines harten materials in den ausgesparten beanspruchungsbereich des grundkoerpers eines chirurgischen instruments und chirurgisches instrument
DE202015009493U1 (de) Schneidplatte und Schneidwerkzeug
EP4199835A1 (fr) Procédé de production d'un instrument chirurgical pour saisir et/ou maintenir et/ou guider une aiguille
WO2015128140A1 (fr) Procédé de fabrication d'un instrument dentaire ou d'un instrument médical
AT510770B1 (de) Verfahren zur herstellung eines gegenstandes aus einem metall oder einer legierung, daraus hergestellter gegenstand sowie presswerkzeug hierfür
DE4304104C2 (de) Hartgelötetes Schneidwerkzeug
EP0390768A1 (fr) Implant osseux
DE102020105886A1 (de) Instrumentenhalbzeug und medizinisches Instrument
DE1508306B1 (de) Hartlot
AT411877B (de) Composite-flachstab
DE3703900A1 (de) Drehbares werkzeug
DE102009012742B4 (de) Schneidwerkzeug, Schneidplatte und Verfahren zum Herstellen einer Schneidplatte
AT501801B1 (de) Hartmetallkörper mit zähem oberflächenbereich
DE102017012205B4 (de) Elektrode zum Widerstandsschweißen
DE102021107219A1 (de) Chirurgisches oder endoskopisches Instrument und dessen Herstellung

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20230321

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)