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WO2007006574A1 - Instrument d'introduction - Google Patents

Instrument d'introduction Download PDF

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Publication number
WO2007006574A1
WO2007006574A1 PCT/EP2006/006868 EP2006006868W WO2007006574A1 WO 2007006574 A1 WO2007006574 A1 WO 2007006574A1 EP 2006006868 W EP2006006868 W EP 2006006868W WO 2007006574 A1 WO2007006574 A1 WO 2007006574A1
Authority
WO
WIPO (PCT)
Prior art keywords
head
insertion instrument
instrument according
shaped recess
electrode assembly
Prior art date
Application number
PCT/EP2006/006868
Other languages
German (de)
English (en)
Inventor
Hans Wilhelm Pau
Detlef Behrend
Wolfram Schmidt
Klaus-Peter Schmitz
Original Assignee
Universität Rostock
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 Universität Rostock filed Critical Universität Rostock
Publication of WO2007006574A1 publication Critical patent/WO2007006574A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/04—Electrodes
    • A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
    • A61N1/0526—Head electrodes
    • A61N1/0541—Cochlear electrodes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3468—Trocars; Puncturing needles for implanting or removing devices, e.g. prostheses, implants, seeds, wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00743—Type of operation; Specification of treatment sites
    • A61B2017/00787—Surgery of the ear

Definitions

  • the present invention relates to an introducer for inserting a flexible electrode assembly into a cavity in a human body, and more particularly to an introducer for inserting a flexible stimulation electrode assembly into a human's cochlea.
  • the hair cells therefore represent the transducer elements that convert the corresponding vibrations of the eardrum waves in the cochlea fluid into electrical nerve impulses, based on a malfunction of the hair cells deafness can not be overcome by conventional hearing aids that only amplify the through cause the ear to receive sound waves. Rather, the electrical nerve impulses to be transmitted to the brain must be artificially generated, which can be achieved by the above-mentioned stimulation electrodes, which form part of a so-called cochlear implant.
  • a cochlear implant includes a number of electrodes disposed at the ends of flexible electrical leads.
  • the electrodes and the leads are regularly embedded in an elongated or strand-shaped flexible electrode carrier.
  • This electrode assembly which may be helically preformed in the shape of the cochlea, is introduced into the cochlea within the scope of an operation in such a way that the electrodes are arranged adjacent to the corresponding auditory nerves and can deliver electrical impulses directly to the auditory nerves.
  • the electrical impulses are generated by a processor which communicates with the conduits and suitably processes sound waves collected by a microphone.
  • the electrode arrangement must be introduced into the cochlea by a hole milled in the petrous bone and arranged there in a defined manner. In general, the electrodes must be introduced without damage, and the inevitable effects on the sensitive structures in the cochlea must be kept as small as possible.
  • Electrodes Similar preconditions must be observed in all other procedures involving the implantation of electrodes. First, it must be ensured that the electrodes are placed precisely in the right place so that they can fulfill their task of stimulating certain nerve cells or detecting a specific electrical signal. On the other hand, the tissue and the nerve cells must not be damaged at the implantation site (in the case of the cochlea, for example, residual hair cells that still have residual hair cells that cause residual hearing). In general, there is the problem that it is extremely difficult to accurately insert very thin, flexible electrode carriers into anatomically preformed cavities without damaging or destroying, for example, soft tissue structures that are sensitive to inadvertent lateral movements.
  • an introducer for inserting a flexible electrode assembly and in particular a flexible elongate electrode assembly into a cavity in a human body has an elongated body having a distal and a proximal end.
  • proximal in the present application in the usual way refers to the end facing the operator, while the term “distal” refers in the usual way to the operator facing away from the patient and the end facing.
  • An elongate electrode arrangement (or an elongate arrangement in general) is understood in the usual way to mean any electrode arrangement (or arrangement) that is strand-shaped and thus extends along a line-like path for a certain length, and has smaller dimensions transverse to this path as along this path.
  • This path, or the course followed by the elongated Elektrodenanorndung may also be curved, so that an elongated electrode arrangement, for example, also be spirally or otherwise spatially preformed in order to achieve about a better adaptation to the shape of the cavity in question.
  • the direction of the path or the course of the elongated electrode arrangement at a certain point is understood as meaning the direction of elongation or elongation of the elongated electrode arrangement.
  • the non-rectilinear elongated electrode arrangement changes the longitudinal or extension direction along its length.
  • the cavity into which the electrode assembly is inserted is optionally created in the course of the operation or by the insertion itself.
  • a cochlear implant electrode assembly may be inserted in a conventional manner into the fluid of the cochlea itself or, advantageously, into a space between the bony wall and the membranes surrounding the membranous cochlea.
  • the body of the insertion instrument has at least along a part of its length a guide, which is designed such that in it an elongated electrode arrangement to be inserted along the longitudinal or Clearrek- kung direction of the elongated electrode assembly, ie, guided towards the distal end of the elongated body can be advanced.
  • This guide thus extends in the longitudinal direction of the body to its distal end.
  • the body may optionally be curved or spatially preformed in its longitudinal or extension direction in a suitable manner, in order to allow adaptation to the field of use and thus better handling by the physician.
  • the insertion instrument has a head for delivering an electrode assembly to be inserted from the insertion instrument, ie, the electrode assembly exits the insertion instrument at the head.
  • the head is disposed on the body and has an elongated trough-shaped recess (ie, a recess extending along a longitudinal direction that opens along its length transverse to the longitudinal direction) that extends in the longitudinal direction Extending or extending direction of the preferably also elongated head from the body of the insertion instrument to a body of the insertion opposite the distal end of the head extends.
  • the groove-shaped recess is designed such that the electrode arrangement with a feed movement in the direction of L Lucassl. Extension direction of the electrode assembly can be performed in the channel-shaped depression.
  • the channel-shaped depression can have any suitable cross-section.
  • the channel-shaped recess may have a section of circular cross-section.
  • the electrode arrangement has a non-circular cross-section and the cross-section of the groove-shaped depression is adapted to this cross-section in order to prevent twisting or twisting of the electrode arrangement in the insertion instrument.
  • the head is formed in such a way and arranged on the body, that an electrode assembly, which is advanced in the guide of the body toward the distal end thereof, from the guide into the trough-shaped recess of the head pass, guided therein and from the Body opposite end of the head and its groove-shaped recess can be pushed out.
  • the insertion instrument can be easily tilted (about 1 to 10 °, preferably 5 to 10 °) in such a way that edge portions at the entrance and / or at the outlet of the channel-shaped depression press against the electrode assembly and this is so "jammed" is.
  • This introducer is very easy to use. It simultaneously serves as a guide rail during insertion and as a support for the electrode assembly. In this way it can be used for precise, targeted and secure positioning and insertion of the electrode assembly.
  • the elongate electrode arrangement is arranged in the guide in the elongated body and optionally, as described above, fixed by tilting or rotation of the insertion instrument with respect to the electrode arrangement.
  • the electrode assembly in the guide is advanced toward the distal end of the guide and the body. If the electrode assembly advanced far enough, it enters with its front end in the trough-shaped depression of the head and during the further feed movement (also) in this out.
  • the insertion instrument is ready to actually insert the electrode assembly.
  • the distal end of the head is positioned with the output-ready electrode assembly immediately in front of the insertion opening and then the electrode assembly targeted from the distal end of the head and its groove-shaped recess out through the insertion into the existing or possibly created by the introduction Cavity advanced.
  • the electrode assembly is securely guided by the trough-shaped depression in the head and optionally by the guide in the body of the introducer.
  • the projecting from the insertion opening end of the electrode assembly which may have, for example, plug contacts for electrical connection with other components of a cochlear implant, removed from the insertion instrument.
  • This is possible by the formation of the guide in the head as a trough-shaped, ie open in the lateral or transverse direction recess in a simple manner by the head of the insertion instrument is laterally or transversely withdrawn from the projecting end or portion of the electrode assembly.
  • the electrode assembly usually has diameters of 1 mm or less, mostly 500 ⁇ m or less, and, for conventional circular cross-section electrode assemblies, typically about 300 ⁇ m on.
  • Newer flat electrodes with an oval cross-section typically have a width of about 250 to 300 .mu.m and a thickness of about 200 .mu.m.
  • the guide in the elongated body and the groove-shaped recess of the head are adapted in their dimensions to the relevant electrode arrangement, it is preferred that in an insertion instrument for the electrode assembly of a cochlear implant, the guide in the elongated body and the guide provided by the trough-shaped depression of the head in the region in which they contact a guided electrode arrangement has a width of 1 mm or less (or a radius of curvature of 500 ⁇ m or less), preferably 500 ⁇ m or less (or a radius of curvature of 250 ⁇ m or less), and most preferably about 300 ⁇ m (or a radius of curvature of about 150 ⁇ m).
  • the lower limit for these dimensions depends on the thinnest possible electrode arrangement.
  • the width is at least 150 ⁇ m (or the radius of curvature at least 75 ⁇ m).
  • the depth of the channel-shaped recess of the head ie the distance between its lateral opening and its lowest point, 600 to 800 microns.
  • the head has a length of 1 mm to 5 mm, preferably about 1.5 mm to 4 mm, and most preferably about 2 mm along the extending direction of the groove-shaped recess.
  • the lateral opening of the channel-shaped depression of the head preferably has uniform dimensions along its entire length.
  • the body of the introducer can be advantageously formed with a handle portion that as many characteristics of the ear micro-instruments developed and established for several decades, such as needles or Check mark to facilitate the handling of the introducer by an operator.
  • the body of the insertion instrument is made thinner in a section at its distal end than in the remaining part of the body.
  • the thinnest possible training in this section has the advantage that the surgeon an unobstructed view of the work area is procured.
  • the head is preferably attached to the thin distal tip of the body.
  • the body be widened in a portion at its proximal end, ie wider than in the remainder of the body, to provide a secure hand grip and ergonomic manipulation of the proximal handpiece common in conventional ear instruments is.
  • the head is located at the distal end of the body.
  • the head may be formed integrally with the body. Preferably, it is designed as a separate, attached to the body element. It is particularly advantageous if the head is detachably attached to the body. Such an arrangement allows the targeted attachment of a head that is particularly suitable in its dimensions and in its configuration for a particular application or for a particular patient.
  • a releasable connection can be made for example by brackets, screws, a plug connection or a snap connection. If no releasable attachment required, the attachment can be done for example by a solder, weld or adhesive bond.
  • the body is at least in a portion which lies in front of the area in the direction from the proximal to the distal end of the body the head is arranged on the body, made flexible or plastically deformable.
  • the trough-shaped depression of the head is curved along its longitudinal direction (ie, its extension direction), so that along its course or its length the direction changes and the normal of the cross-sectional areas at the two end of the trough-shaped depression at an angle are arranged to each other.
  • the direction of entry of the elongated electrode arrangement defined by the guide of the channel-shaped depression is at the (proximal) end of the channel-shaped depression facing the body of the introducer instrument and the outlet direction of the elongate electrode arrangement defined by the channel-shaped recess guidance at the side facing away from the body of the insertion instrument (distal) end of the trough-shaped depression arranged at an angle to each other.
  • the angle is preferably 10 ° to 90 °, more preferably 10 ° to 60 ° and most preferably 10 ° to 30 °.
  • the curvature can be designed so that the groove-shaped recess is curved in its longitudinal or extension direction along its entire length, that is, for example, is uniformly curved. Preferably, however, it is the largest in a longitudinal or extension direction of the channel-shaped recess middle section.
  • the ends of the groove-shaped depression of the head are not curved, ie if the groove-shaped depression has sections at both ends. has, which are straight in the longitudinal or extension direction. In this way, the electrode order can enter the channel-shaped depression in a defined manner and exit from it.
  • the curved gutter-shaped depression of the head is curved in its longitudinal direction, it is furthermore advantageous if the curved gutter-shaped depression extends in a plane, i. extending in a plane, and when the along the length of the channel-shaped recess extending opening of the channel-shaped recess is transversely and preferably aligned perpendicular to this plane.
  • the along the longitudinal extent of the channel-shaped recess extending opening of the channel-shaped recess is oriented transversely and preferably perpendicular to the plane in which the channel-shaped recess, can be achieved simultaneously that the head slightly after insertion by lateral or transverse stripping can be solved by the electrode assembly and that the electrode assembly is securely guided in the head.
  • the groove-shaped depression of the head is narrowed at its edges running in the longitudinal direction or narrows in the direction of its lateral opening, so that an electrode arrangement guided in the groove-shaped depression transversely to the longitudinal or extension direction of the channel-shaped Well in the trough-shaped depression is held.
  • This embodiment improves the lateral or transversal guidance of the electrode arrangement in the channel-shaped depression, which is provided without constriction solely by static friction on the walls of the channel-shaped depression.
  • Such a narrowing can be achieved, for example, by forming the groove-shaped depression with a slightly more than semicircular cross-section or by, for example, in the case of a U-shaped cross-section. cut, provided at the edges inwardly directed projections.
  • any cross section is suitable which allows a guide of an electrode arrangement with a certain diameter in the annular recess and at the same time prevents the electrode arrangement from exiting laterally from the channel-shaped recess. If such a configuration is chosen, an electrode arrangement must be used in which the end projecting from the insertion opening after insertion has a smaller diameter than the inserted section in order to be able to pull the head laterally away from the electrode arrangement.
  • cochlea electrode arrangements in which the cross section in the section to be inserted usually increases from the distal towards the proximal end are formed in a regularly stepped manner, so that the cross section behind the section to be inserted decreases again.
  • the head has a U-shaped profile in cross-section.
  • the head at each point in the direction of the longitudinal extension of the elongated channel-shaped depression perpendicular to this direction on a U-shaped profile.
  • the head is particularly simple in design and manufacture.
  • the guide in the body can be partially or completely formed as a tubular longitudinal bore in the body. This has the advantage of a particularly secure guidance and the longest possible protection of the introduced electrode assembly from damage and contamination.
  • the section of an electrode arrangement which is still in the guide in the body after insertion can be removed from the guide in a simple manner laterally or transversely.
  • the lateral guide in the channel-shaped depression is provided by friction as in the head and can be improved as in the head by the trough-shaped depression narrows toward its lateral opening.
  • the openings of the trough-shaped depressions of the head and of the body extending along the length of the groove-shaped depressions are aligned transversely and preferably perpendicular to one another. In this way it is advantageously prevented that the electrodes Order during the insertion unintentionally moved laterally out of the provided by the channel-shaped recesses guides.
  • the insertion instrument has a feed device which is designed such that its actuation causes the advancement of an electrode arrangement arranged in the guide of the body in the direction of the distal end of the body.
  • a feed device which is designed such that its actuation causes the advancement of an electrode arrangement arranged in the guide of the body in the direction of the distal end of the body.
  • Such advancing means may preferably comprise a wheel rotatably mounted on the body so as to engage and act upon an electrode assembly disposed in the guide in the body to effect its advancement. The feed is effected in this case, for example, by friction between the wheel and the electrode assembly.
  • the wheel is removably disposed on the body, so that it can be detached from the body and then attached to this again.
  • the wheel is slidably mounted on the body in such a way that it acts between a first position in the vicinity of the guide of the body in which the wheel engage and act on an electrode arrangement arranged in the guide in the body may be moved to effect its advancement and a second position remote from the guidance of the body. In this second position, the wheel does not engage with an electrode arrangement arranged in the guide of the body.
  • the wheel can be selectively brought into an active position or feed position and into a passive position or non-feed position, wherein the wheel is preferably attached to at least in the active position or the feed position can be locked.
  • Another preferred advancing means comprises a slider slidably disposed on the body and engaging the guide in the elongate body to engage and act upon an electrode assembly disposed therein to effect its advancement.
  • a slider may comprise an externally accessible actuator and an at least partially disposed in the guide in the body and displaceable along the guide member which engages the proximal end of the arranged in the guide electrode assembly and this upon actuation of the actuating element in the direction of the presses distal end of the body.
  • FIG. 1 shows a perspective view of the distal end of an insertion instrument according to the invention.
  • FIG. 2 shows a side cross-sectional view of the distal end of the introducer instrument shown in FIG.
  • FIG. 3 shows a side cross-sectional view of a proximal portion of the body of the introducer instrument shown in FIG.
  • FIG. 4 shows a cross section along the line IV-IV from FIG. 3.
  • the insertion instrument 1 shown in FIG. 1 has an elongate body 2 (see also FIG. 3), at whose distal end 3 an elongated head 4 is fastened.
  • the attachment of the head 4 on the body 2 is made in this example by a solder joint 5 (see Figure 2).
  • the body 2 has along a part of its length a groove-shaped recess 6, which serves as a guide for an inserted electrode assembly 7.
  • the electrode arrangement 7 has a multiplicity of electrical lines 8 connected to electrodes, which are embedded together with the electrodes in an elongate, flexible electrode carrier 9.
  • the head 4 has a U-shaped cross-sectional profile.
  • an elongated groove-shaped recess 10 is formed, in which the electrode assembly 7 at a feed movement in the longitudinal direction of the head 4, i. in the longitudinal or extension direction of the groove-shaped recess 10, can be performed.
  • the electrode assembly 7 can be advanced in a guided manner along its longitudinal extent so that it emerges from the trough-shaped depression 10 and the head 4 at the distal end 12 of the head 4 and can be introduced into its destination.
  • the head 4 can be easily manufactured by suitably bending and deforming a plate-shaped member.
  • the head 4 and thus also the channel-shaped depression 10 are curved along their longitudinal extent and accordingly along the feed direction of the electrode arrangement 7.
  • the transverse or lateral (ie running along the length of the groove-shaped recess 10) opening 11 of the channel-shaped recess 10 has in a direction which is aligned perpendicular to the plane in which the curved gutter-shaped recess 10 and the curved head 4th runs.
  • the head 4 can be easily removed from the electrode assembly 7 by turning the head 4 laterally (in FIG 1 to the right) is removed from the Elektrodenanorndung 7, wherein the electrode assembly 7 leaves the trough-shaped recess 10 through the lateral opening 11.
  • FIG. 2 shows a side view of the portion of the insertion instrument 1 shown in Figure 1. It can be seen that the electrode assembly 7 enters from the trough-shaped recess 6 of the body 2 in the trough-shaped recess 10 of the head 4 and is guided in this until it the distal end
  • the distal end 12 of the head 4 can be arranged in a suitable orientation in front of the insertion opening and then the electrode assembly 7 can be inserted precisely and safely into the insertion opening by advancing.
  • the head 4 is curved in the advancing direction of the electrode assembly 7 (i.e., in the longitudinal direction of the groove-shaped recess 10).
  • the two straight end portions 13 of the head 4 are arranged with their longitudinal axes at an angle 15 to each other, so that the electrode assembly 7 is deflected in the head 4.
  • the angle 15, which is 30 ° in this example, can be chosen so that the introduction of the electrode assembly 7 can be accomplished precisely under suitable spatial conditions even with a suitable orientation.
  • Figure 1 shows a possible embodiment of extending in the longitudinal direction of the head 4 edges 16 of the U-profile.
  • the edges 16 are bent inwards in order to achieve a constriction of the lateral opening 11 of the groove-shaped depression 10.
  • Such an embodiment makes sense if the static friction between the walls of the channel-shaped recess 10 and the electrode assembly 7 does not ensure sufficient lateral guidance.
  • FIG. 3 shows the proximal end of the body 2 of an insertion instrument 1.
  • the body 2 is straight. But it may also be advantageous if the body 2 has a curvature in the longitudinal direction.
  • the body 2 has a grip portion 17, on which the insertion instrument 1 can be securely held and guided.
  • An electrode assembly 7 to be introduced is introduced into the body 2 at an entry point 18 into the channel-shaped recess 6, which is used as a guide and described with reference to FIGS. 1 and 2.
  • the channel-shaped recess 6 is formed in the surface of the body 2 and extends along the longitudinal direction of the body 2 up to the head 4.
  • the channel-shaped recess 6 is shown in more detail in the cross-sectional image of Figure 4. From this it can be seen that the channel-shaped recess 6 has a rectangular shape in deviation from the example shown in Figures 1 and 2 in cross section.
  • a feed device 20 is provided on the body 2. As shown in Figures 3 and 4, the feed device 20 to a wheel 21 which is rotatably supported between two formed on the body 2 lugs 22 on a pin 23 which defines the axis of rotation 24 of the wheel 21. As can be seen in particular in Figure 4, the wheel 21 is arranged in such a way that it engages with its outer surface at one of the electrode support 9 of an electrode assembly 7, which is located in the groove-shaped recess 6. As a result, by rotating the wheel 21 by means of friction between the outer surface of the wheel 21 and the electrode support 9, a force can be applied to the electrode assembly.
  • the electrode arrangement 7 which causes their advancement in the direction of the distal end 3 of the body 2 or in the direction of the head 4 of the insertion instrument 1.
  • the electrode arrangement 7 finally arrives, as in the example shown in FIGS. 1 and 2, in the channel-shaped depression 10 of the head 4 and can be guided safely and precisely guided through an insertion opening.
  • the lateral opening 19 of the trough-shaped recess 6 of the body 2 is aligned in the example shown in the direction of the plane defined by the curvature of the head 2, while the lateral opening 11 of the trough-shaped recess 10 of the head 4 is oriented perpendicular to this plane.
  • the part of the electrode arrangement 7 protruding from the insertion opening can simply be removed from the insertion instrument 1 in the example shown in FIG. 3 by removing this part laterally from the channel-shaped depression 6. It may be advantageous if the wheel 21 is releasably secured to the lugs 22 to facilitate the removal of the electrode assembly 7 from the trough-shaped recess 6.
  • a slot 25 is formed in each approach 22, which is inclined with respect to the body 2 and its groove-shaped recess 6 and in which the pin 23 of the wheel 21 is guided.
  • the wheel 21 can be moved to an operating position by moving it towards the channel-shaped recess 6 and bringing it into abutment with an electrode arrangement 7 arranged therein.
  • the pin 23 can be locked by a locking device (not shown).
  • the wheel 21 by shifting the Pin 23 are also removed from the groove-shaped recess 6 in the slot 25 to release an arranged therein electrode assembly 7.
  • an opening 26 is provided at the end of the slot 25 remote from the annular recess 6, through which the pin 23 and the wheel 21 can be removed from the slot 25 and thus separated from the insertion instrument 1. Subsequently, the electrode assembly 7 can be removed in a simple manner from the channel-shaped recess 6.

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  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Cardiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electrotherapy Devices (AREA)

Abstract

L'invention concerne un instrument d'introduction (1) servant à introduire un dispositif à électrode, longitudinal souple (7) dans une cavité d'un corps humain. L'instrument d'introduction (1) comprend : un corps allongé (2) ayant une extrémité distale (3) et une extrémité proximale présentant sur au moins une partie de sa longueur, un guide (6) à l'intérieur duquel est poussé, en direction de l'extrémité distale (3) du corps allongé (2), un dispositif à électrode (7) à introduire, et une tête (4) disposée sur le corps (2), pour la distribution d'un dispositif à électrode (7) à introduire, à partir de l'instrument d'introduction (1), présentant un évidement en forme générale de rigole (10) qui s'étend du corps (2) vers une extrémité de la tête (4) opposée audit corps (2), rigole dans laquelle le dispositif à électrode (7) peut être guidé. La tête (4) peut être configurée et agencée au corps (2), de telle façon qu'un dispositif à électrode (7) qui est poussé dans le guide (6) du corps (2), en direction de son extrémité distale (3), parvienne, du guide (6), dans l'évidement en forme de rigole (10) du corps (4), soit guidé dans celle-ci, et puisse être poussé vers l'extérieur, à partir de l'extrémité de la tête (4) opposée au corps (2).
PCT/EP2006/006868 2005-07-14 2006-07-13 Instrument d'introduction WO2007006574A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510032959 DE102005032959A1 (de) 2005-07-14 2005-07-14 Einführinstrument
DE102005032959.4 2005-07-14

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WO2007006574A1 true WO2007006574A1 (fr) 2007-01-18

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WO (1) WO2007006574A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT517342A4 (de) * 2015-10-20 2017-01-15 Acmit Gmbh Medizinisches Instrument für chirurgische Eingriffe
WO2019209690A1 (fr) 2018-04-23 2019-10-31 Med-El Elektromedizinische Geraete Gmbh Ajustement spécifique au patient de trajectoires d'insertion d'implant cochléaire

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5797923A (en) * 1997-05-12 1998-08-25 Aiyar; Harish Electrode delivery instrument
US5902331A (en) * 1998-03-10 1999-05-11 Medtronic, Inc. Arrangement for implanting an endocardial cardiac lead
US6397110B1 (en) * 1998-08-26 2002-05-28 Advanced Bionics Corporation Cochlear electrode system including detachable flexible positioner
WO2003070133A1 (fr) * 2002-02-22 2003-08-28 Cochlear Limited Dispositif permettant d'insérer un réseau d'électrodes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5797923A (en) * 1997-05-12 1998-08-25 Aiyar; Harish Electrode delivery instrument
US5902331A (en) * 1998-03-10 1999-05-11 Medtronic, Inc. Arrangement for implanting an endocardial cardiac lead
US6397110B1 (en) * 1998-08-26 2002-05-28 Advanced Bionics Corporation Cochlear electrode system including detachable flexible positioner
WO2003070133A1 (fr) * 2002-02-22 2003-08-28 Cochlear Limited Dispositif permettant d'insérer un réseau d'électrodes

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT517342A4 (de) * 2015-10-20 2017-01-15 Acmit Gmbh Medizinisches Instrument für chirurgische Eingriffe
AT517342B1 (de) * 2015-10-20 2017-01-15 Acmit Gmbh Medizinisches Instrument für chirurgische Eingriffe
WO2019209690A1 (fr) 2018-04-23 2019-10-31 Med-El Elektromedizinische Geraete Gmbh Ajustement spécifique au patient de trajectoires d'insertion d'implant cochléaire
CN112004572A (zh) * 2018-04-23 2020-11-27 Med-El电气医疗器械有限公司 特定于患者的耳蜗植入物插入轨迹调整
EP3784329A4 (fr) * 2018-04-23 2022-03-23 MED-EL Elektromedizinische Geraete GmbH Ajustement spécifique au patient de trajectoires d'insertion d'implant cochléaire
CN112004572B (zh) * 2018-04-23 2024-05-28 Med-El电气医疗器械有限公司 特定于患者的耳蜗植入物插入轨迹调整
US12023223B2 (en) 2018-04-23 2024-07-02 Med-El Elektromedizinische Geraete Gmbh Patient specific adjustment of cochlear implant insertion trajectories

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