EP4432946A1 - Handhabungsvorrichtung für ein elektrochirurgisches instrument, verfahren zur herstellung einer handhabungsvorrichtung und elektrochirurgisches instrument - Google Patents
Handhabungsvorrichtung für ein elektrochirurgisches instrument, verfahren zur herstellung einer handhabungsvorrichtung und elektrochirurgisches instrumentInfo
- Publication number
- EP4432946A1 EP4432946A1 EP22823456.3A EP22823456A EP4432946A1 EP 4432946 A1 EP4432946 A1 EP 4432946A1 EP 22823456 A EP22823456 A EP 22823456A EP 4432946 A1 EP4432946 A1 EP 4432946A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lever
- handling device
- lever extension
- extension
- contact section
- 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
Links
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
- A61B18/1445—Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/70—Manipulators specially adapted for use in surgery
- A61B34/71—Manipulators operated by drive cable mechanisms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00526—Methods of manufacturing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00059—Material properties
- A61B2018/00071—Electrical conductivity
- A61B2018/00077—Electrical conductivity high, i.e. electrically conducting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00059—Material properties
- A61B2018/00071—Electrical conductivity
- A61B2018/00083—Electrical conductivity low, i.e. electrically insulating
Definitions
- Handling device for an electrosurgical instrument method for producing a handling device and electrosurgical instrument
- the present invention relates to a handling device for an electrosurgical instrument, a method for producing a handling device for an electrosurgical instrument, and a corresponding electrosurgical instrument, in particular an endoscopic instrument.
- Handling devices for surgical instruments also called accessories, have to meet strict biocompatibility requirements and are usually made of steel for this purpose. As a rule, they contain two lever arms and an articulated mechanism, which enables the mobility of one lever or both levers. There are corresponding handling devices for hand-operated surgical instruments and also handling devices for robot-operated surgical instruments. Both hand-operated surgical instruments and also robot-operated surgical instruments are designed in particular as endoscopic instruments.
- EP 2026 705 B1 describes gripping forceps for hand-operated surgical instruments, which has two gripping jaws that can be moved relative to a base body. This construction offers high mechanical stability and a strong transmission of traction, but it is an electrically non-active instrument.
- DE 102019121 034 A1 describes an endoscopic device provided for a surgical robotic system with a deflection mechanism and an as
- HF surgery uses high-frequency electrical alternating current for electrotomy (also diathermy or electrocaustic) and coagulation (clotting).
- electrotomy also diathermy or electrocaustic
- coagulation clotting
- the surgical instruments have one or more (active) electrodes on their handling device, e.g. B. forceps, clamps, scissors or the like, on which before the high-frequency alternating current in the target tissue
- a high current density is applied to the target tissue so that the desired effect of electrotomy and/or coagulation occurs in the target tissue.
- the handling devices are correspondingly small.
- the alternating current was supplied either via electrically conductive structural elements of the surgical instrument that were to be insulated from one another, or via conductors that were routed centrally in the instrument
- Handling device out It can either monopolar or bipolar operated surgical instruments are used.
- a single active electrode is arranged on the accessory of the surgical instrument, via which the high-frequency alternating current is introduced into the tissue of a patient. So that the current can be introduced into the tissue from the individual active electrodes, a large counter-electrode (neutral electrode) must be attached to the patient's body as the opposite pole.
- two electrodes active electrode and neutral electrode are arranged on the accessories of the surgical instrument.
- the high-frequency alternating current is introduced into the target tissue from a first electrode (active electrode) directly opposite the second electrode (neutral electrode).
- active electrode directly opposite the second electrode (neutral electrode).
- neutral electrode the second electrode
- particularly high demands are placed on the insulation of the current-conducting components, for which only thin wall thicknesses are available in the very small space available. In order to avoid voltage flashovers, the voltages that can be used are limited accordingly.
- the object is to specify an improved handling device for electrosurgical instruments, an improved method, a method for producing a handling device for electrosurgical instruments, and a corresponding electrosurgical instrument.
- this object is achieved by a handling
- a handling device for an electrosurgical instrument with: a joint mechanism which has at least one lever on the handling side that can be moved for manipulation; a lever extension designed as an electrical insulator, which is fixed to the
- a method for producing a handling device for an electrosurgical instrument in particular a handling device according to the invention, with the steps: Positive connection of a than Electrical insulator trained lever extension with a lever of a joint mechanism; Fixing the form-fitting connection between the lever extension and the lever by means of a securing element; Form-fitting connection of an electrically conductive contact section designed for electrosurgical contacting of biological tissue to the lever extension on a side that can be subjected to force via the joint mechanism; and fixing the form-fitting connection between the lever extension and the contact section by means of a securing element.
- An electrosurgical instrument in particular a forceps instrument, with a handling device according to the invention and/or manufactured using a method according to the invention.
- the finding on which the present invention is based is that the alternating current transmission of an electrosurgical instrument can be decoupled from the power transmission, so that within the joint mechanism a
- Isolation can be dispensed with.
- the idea on which the present invention is based consists in eliminating the previous need to transmit the current via the joint mechanism by integrating the insulator into the lever of the handling device.
- the lever is designed in several parts, with the joint mechanism or its
- Lever extension is electrically separated from an electrically conductive contact section.
- Contact section can be electrically contacted directly with a conductor, independently of the joint mechanism, for example with a conductor that is routed through the insulator.
- the contact section is arranged on a side of the lever extension that can be subjected to force via the joint mechanism, the lever extension designed as an insulator is predominantly subjected to pressure when force is applied, which leads to a continued high mechanical load capacity of the handling device.
- a construction of an existing handling device such as pliers, clamps, scissors or the like, which are usually made of corrosion-resistant steel, can largely be adopted in the area of the joint mechanism and only on the handling side, ie in the area the distal ends of the lever, can be modified with a lever extension according to the invention and a contact section according to the invention.
- electrically insulating biocompatible materials can be considered for the lever extension designed as an electrical insulator, for example
- the lever extension preferably contains at least one mechanically strong and non-tracking material that meets both the electrical requirements for an insulator and the mechanical requirements for the relevant load case of a handling lever for surgical instruments.
- the handling device can have a stationary or a movable counterpart to the lever, which is designed to absorb forces transmitted via the contact section.
- a second lever which can also be moved for manipulation, can be provided.
- endoscopic instruments can be used in particular.
- the method according to the invention provides a form-fit connection for the fixed connection of the lever extension to the lever and of the contact section to the lever extension
- connection before.
- the lever, the lever extension and the contact element is specially shaped for this type of connection, i.e. it is designed with appropriate mating surfaces.
- an integral connection for example gluing and/or welding at least in sections, can also be provided.
- the positive connection provides with the
- Security element ready a particularly fail-safe connection. In this way, despite the fact that the handling device consists of several parts, a very high degree of operational reliability is ensured.
- lever extension and the lever mechanically engage in one another in such a way that they cannot become detached from one another.
- the lever extension and the lever cannot become detached from one another even without force transmission or with an interrupted force transmission.
- a permanently fixed connection is thus advantageously provided, which offers a very high level of security.
- a material connection for example an adhesive bond, can also be provided.
- the positive connection has a tongue and groove connection running around the circumference of an end of the lever on the handling side and a corresponding assembly section of the lever extension.
- End corresponds in particular to a distal end.
- the lever extension and the lever grip around the handle exercise-side end into each other.
- edge surfaces aligned perpendicularly or obliquely thereto can be provided on the handling-side end and the mounting section, so that there are contact surfaces aligned in different directions, on which normal forces act in the load case, so that the contact surfaces have translational degrees of freedom and, in the interaction, also rotational degrees of freedom
- a surface pressure remains comparatively low, so that a very stable connection, in particular a rigid connection with high strength, is advantageously provided.
- the shape of the tongue and groove can be adjusted. That is, in addition to a flat training, which in the
- a non-positive connection can also be provided.
- it can be a latching or click connection between groove and tongue.
- a material connection in particular gluing, can be provided between the lever extension and the lever.
- the tongue and groove connection is fixed with an additional lock.
- this blocks the direction in which the lever extension and the lever are joined together.
- it is the push-on direction, ie a direction in which the tongue is inserted into the groove.
- the locking is, in particular, a securing element that can be connected to the lever in a cohesive manner, such as a
- the lock blocks the
- Insertion direction is set in at least one of the connection partners.
- a pin can be inserted into a recess, in particular a bore, extending into the lever and the lever extension and welded to the lever.
- the contact section is connected to the lever extension in a form-fitting manner.
- Lever extension and the contact section mechanically into one another in such a way that they cannot become detached from one another.
- a fixed connection is thus advantageously provided here as well, which offers a very high level of security.
- a material connection for example an adhesive bond, can also be provided.
- the positive connection is also here with a peripheral extension around a handling-side end of the lever and a corresponding assembly section of the
- the handling-side end corresponds in particular to a distal end. In this way, the lever extension and the contact section engage circumferentially around the handling side
- edge surfaces aligned perpendicularly or obliquely thereto can be provided on the handling-side end and the mounting section.
- a material connection between the lever extension and the contact section can also be provided, in particular it can be an adhesive bond.
- the tongue and groove connection between the lever extension and the contact section can be fixed with an additional locking device.
- a securing element that can be connected to the contact section in a material-to-material manner is provided for this purpose. The detent locks that one
- the securing element is in particular a plate provided with an extension, for example a pin, which is materially connected, in particular welded, to the contact section and blocks a relative movement in the push-on direction.
- the lever extension extends the
- lever extension especially alone, forms a section of the effective lever arm.
- lever extension is functionally integral
- the contact section is arranged in a region that is mechanically lengthened by the lever extension and into which the lever does not extend, or at least not completely.
- a greater insulating wall thickness of the lever extension can be provided, so that there is advantageously an increased creepage distance and thus improved protection against flashover, which allows higher operating voltages.
- the lever extension has a
- Conductor is formed to the contact portion for high-frequency control of the contact portion.
- the contact portion for high-frequency control of the contact portion.
- Conductor for example in the form of a cable, is routed from the proximal side through the lever extension to the contact section in a distal direction.
- An electrical connection of the contact section can thus advantageously be lowered into the lever extension and sealed off from the environment. Furthermore, a direct power connection of the contact section is thus possible.
- the joint mechanism has a second lever that can be moved for manipulation.
- the second lever forms a mechanical counterpart to the first lever and can, in particular, be symmetrical to the first
- levers must be constructed in the same way, i. H. have a corresponding second lever extension and a corresponding second contact section. In this way, forces are advantageously applied symmetrically and reaction forces are mutually compensated.
- the joint mechanism is designed as a non-protruding joint mechanism, so that the levers can be rotationally manipulated without displacement.
- the levers can be noted via a pulling element, for example an operating cord of a surgical instrument.
- the second lever is firmly coupled to a second lever extension designed as an electrical insulator.
- the second lever extension is also coupled to an electrically conductive second contact section.
- the two contact sections are arranged corresponding to one another on an inner side of the lever extensions and are designed for bipolar high-frequency treatment of biological tissue.
- the two levers, lever extensions and contact sections are designed symmetrically to one another and can be actuated synchronously.
- the handling device is designed, for example, as a distal accessory of a forceps instrument, the levers, lever extensions and
- an endoscopic instrument for example a forceps instrument
- Handling device designed for bipolar high-frequency treatment.
- FIG. 1 shows a schematic longitudinal sectional view of a handling device
- FIG. 2 shows an exploded view of a handling device according to a further embodiment
- FIG. 3 shows a side view of the handling device according to FIG.
- FIG. 4 shows a longitudinal sectional view of the handling device according to FIG. 3;
- FIG. 5 shows a plan view of the handling device according to FIG.
- Fig. 6 shows a cross-sectional view of the handling device according to Fig. 5 in the area A-A;
- Fig. 7 shows a cross-sectional view of the handling device according to Fig. 5 in the area B-B;
- FIG. 8 shows a perspective view of a handling device according to an embodiment with two levers; 9 shows a side view of a surgical instrument designed for manual operation;
- FIG. 10 shows a schematic representation of a surgical system
- FIG. 11 shows a plan view of a deflection mechanism for an endoscopic instrument
- FIG. 12 shows a plan view of a deflection mechanism according to a further embodiment
- FIG. 13 shows a cross-sectional view of a deflection mechanism according to FIG.
- FIG. 15 shows a longitudinal sectional view of the endoscopic instrument according to FIG. 14.
- Fig. 1 shows a schematic longitudinal sectional view of a
- the handling device has a joint mechanism 2, which can be mounted in a head member of an electrosurgical instrument and coupled to an actuating strand.
- the joint mechanism 2 has at least one lever 3 on the handling side, which can be moved, in particular rotated, for manipulation by the joint mechanism 2 .
- joint mechanism 2 can have a counter-member, not shown here, for absorbing reaction forces of the
- Lever 3 or a second lever, not shown here
- the handle 3 can be adjusted in rotation by the joint mechanism 2 and can transmit forces, in particular in a closing direction.
- the lever 3 is firmly coupled to a lever extension 4 designed as an electrical insulator. Furthermore, an electrically conductive one is firmly coupled to the lever extension 4
- the lever extension 4 decouples the joint mechanism 2 together with the lever 3 electrically from the
- the lever extension 4 additionally lengthens the lever 3 and is thus also subjected to a moment or, depending on the point at which a reaction force is applied, a bending load.
- the contact section 5 is at a via the hinge mechanism
- the handling device 1 can be a jaw part of a forceps instrument. In case of a
- Pliers represents the side 6 that can be subjected to force, for example an inside of the lever 3.
- Contact section 5 designed for electrosurgical contacting of biological tissue.
- the contact section can also be contacted directly with a conductor, not shown here, which can extend in particular through the lever extension 4 and be electrically conductively connected thereto on a rear side of the contact section 5 facing the lever extension 4 .
- Embodiment transferable is positively connected to the lever 3 here.
- the contact section 5 is also connected to the lever extension 4 in a form-fitting manner.
- the embodiment shown is a circumferential groove
- dovetail grooves or the like are dovetail grooves or the like.
- Both the respective components and their contact surfaces taper towards the handling side or towards a distal one
- connection between the contact section 5 and the lever extension 4 is connected to a cohesively with the Securing element 12 that can be connected to contact section 5 is defined, which here, for example, is designed with an extension and is attached flat on the inner side 6
- lever extension 4 designed as an electrical insulator, largely encloses the lever 3
- Lever 3 or the joint mechanism 2 and the contact section 5 are separated from one another with sufficient creepage distances.
- the joint mechanism 2 can thus advantageously be made of steel without itself functioning as a conductor. Thus there is no risk of unwanted electricity
- the components are preferably glued together over the entire surface in addition to the form-fitting connection. In this way, on the one hand, the strength of the
- FIG. 4 shows a longitudinal sectional view of the handling device according to FIG. 3.
- Connection 13 is a comparatively long spring 22 that is integral with the lever 3 and is fitted into a spring 22 in the mounting section 8 of the Lever extension 4 provided groove 23 was added.
- tongue-and-groove connection 14 between contact section 5 and lever extension 4 engage both on the handling-side end 10 and on the mounting section 11 provided and correspondingly designed with a hook-like extension formed springs 24, 25 and the resulting from the hook-like shape directly adjoining the springs 24, 25 grooves into one another.
- the lever extension 4 extends the lever 3 starting from the
- Joint mechanism 2 or an axis of rotation symbolized purely schematically here by dashed lines mechanically, so that a mechanically extended region 15 of the lever extension 4 extending beyond the lever 3 is provided.
- the contact section 5 is nevertheless arranged in a force-transmitting manner in the mechanically lengthened region 15, in which the lever 3 does not extend, or at least not completely.
- An axis of rotation symbolized here schematically by dashed lines runs in a state of the handling device 1 mounted on an electrosurgical instrument in FIG
- the joint mechanism 2 is designed as a non-protruding joint mechanism, so that the lever 3 can be rotationally manipulated without displacement.
- FIG. 5 shows a plan view of the handling device 1 according to FIGS. 2 to 4.
- the illustrated embodiment of the handling device 1 is a
- Jaw part of a surgical forceps is.
- the jaw part has a contour that tapers distally and also curves by about 30°. Also marked are two
- FIG. 6 shows a cross-sectional view of the handling device 1 according to FIG. 5 in the area AA.
- section line A-A runs transversely through the securing element 9 and illustrates the respective T-shaped cross-section
- FIG. 7 shows a cross-sectional view of the handling device 1 according to FIG. 5 in the area B-B.
- the section line B-B runs through the lever 3, the lever extension 4 and the contact section 5.
- connection 13 between the lever and the lever extension is also T-shaped in cross section, while in this area there is still no tongue and groove connection 14 between the lever extension.
- sentence 4 and contact section 5 is present. This is formed further distally closer to the end 10 on the handling side.
- FIG. 8 shows a perspective view of a handling device 1 according to an embodiment with two levers 3,
- the joint mechanism 2 accordingly has a second lever at 18, which in the same way as the first lever 3 to
- Manipulation is movable, especially rotatable.
- the second lever 18 can also be coupled to the actuating strand of an electrosurgical instrument via the joint mechanism 2 .
- the two levers 3, 18 act in this
- Biological tissue can thus be clamped or separated between them.
- the second lever 18 is firmly coupled to a second lever extension 19 designed as an electrical insulator, which in turn is coupled to an electrically conductive second contact section 20 .
- the two contact sections 5, 20 are arranged corresponding to each other on an inside of the lever extensions 4, 19 and each with a
- Conductor 17 can be electrically contacted independently of one another.
- Such a handling device 1 for bipolar HF surgery can be used both with manually operated surgical instruments and with surgical or endoscopic instruments for a surgical system, in particular for operation via a surgical robot.
- Fig. 9 shows a side view of a surgical instrument 21 designed for manual operation.
- the surgical instrument includes a shaft running in a tubular shaft 26
- the handling device 1 according to FIG. 8 is mounted here as an accessory or tool at the distal end (facing away from a user/surgeon) of the tubular shaft 26 in a head member 27 of the surgical instrument 21 .
- the proximal end facing away from a user/surgeon
- a handle 28 and a grip leg 29 that can be moved to actuate the actuating strand are provided.
- the surgical instrument 21 is designed for bipolar high-frequency treatment and has a bipolar one for this purpose
- Power connector 30, for example for a coaxial cable on.
- Head 17 may be provided.
- other contacts are also conceivable, at least from the power connection to the head member, for example directly via the tubular shaft 26 and/or the actuating strand.
- 10 shows a schematic representation of a surgical system 60.
- the surgical system 60 has a surgical robot 61 and a corresponding electrosurgical instrument, which is designed as an endoscopic instrument 50 .
- the endoscopic instrument 50 is guided by an arm 64 of the surgical robot 61 and has a handling mechanism that can also be actuated both mechanically and electrically, preferably bipolar, by means of the surgical robot 61.
- the surgical system 60 includes a data
- the surgical robot 61 has, for example, a plurality of robot arms. Of course, in other embodiments, a single
- Robot arm or another plurality of robot arms can be provided. Furthermore, several surgical robots and/or several control devices can also be provided.
- robot arm 64 Of the robot arms, only the robot arm 64 is provided with a reference number for the sake of better clarity.
- the surgical system 60 in the illustrated embodiment comprises a plurality of endoscopic devices, which can be of the same or different type as the endoscopic instrument 50, which is also the only one provided with a reference symbol for better clarity.
- the surgical robot 64 has, purely by way of example, one endoscopic device per robot arm.
- the plurality of endoscopic devices can at least partially be designed differently from one another and differ, for example, by a type of end effector and/or a mode of operation.
- a type of end effector and/or a mode of operation can be designed differently from one another and differ, for example, by a type of end effector and/or a mode of operation.
- one skilled in the art would readily provide and/or adapt the multiple endoscopic devices for different surgical applications according to their skill.
- the endoscopic instrument 50 between the robot arm 64 and the handling device 1 has a deflection mechanism
- Fig. 11 shows a plan view of a deflection mechanism 31 for an endoscopic instrument 50.
- the deflection mechanism 31 has a first link 32 and a link for deflection with the first link
- Connectors may be provided.
- the connecting members are toroidal or im
- Ring-shaped cross-section around a central axis 45 with a central recess for an actuation strand of an endoscopic instrument is to be understood broadly, it can be a ring or an annular disk with a variety of longitudinal sectional geometries, in particular also with a lateral surface that is straight in sections and/or a longitudinal sectional contour that tapers conically from the inside to the outside.
- the links 32, 33 are connected to each other by a
- movable coupling elements (48, see FIG. 15) can also be provided in a region of the edges of the central recesses.
- the steering wires 34 are guided through passage openings 35 of the connecting members 32,33, which are provided eccentrically in the connecting members 32,33.
- the through-openings 35 are evenly spaced about the center of the links
- An electrical conductor 36 is arranged in a region between two adjacent steering wires 24 and also extends, in particular parallel to the steering wires 34, through the connecting members 32, 33.
- the electrical conductor 36 is guided through conductor bushings 37 which are additionally provided in the connecting members 32, 33 between two adjacent through-openings 35 and are also arranged eccentrically.
- the steering wires 34 are anchored at a distal end 43 of the deflection mechanism 31 in an element distally adjoining the connecting members 32, 33 and are under tension and/or tension at a proximal end 44 of the deflection mechanism 31
- an actuator provided in a robot arm.
- the deflection mechanism 31 is bent toward the steering wire 34 that is under tension.
- distal end 43 is rotated relative to the proximal end 44 in a radial direction, i. H. transverse to a central axis 45 of the connecting members 32, 33 deflected.
- the at least one conductor 36 moves automatically with the deflection mechanism 31 and is thus curved comparatively gently in a manner similar to the steering wires 340 .
- Outlet radii may be formed in order to avoid edge contact of the at least one conductor 36 and in particular not to damage the insulation of the conductor 36. Furthermore, so certain compensation volumes in compression or
- FIG. 12 shows a plan view of a deflection mechanism 31 according to a further embodiment.
- the deflection mechanism 31 also has the, with reference to Fig.
- the steering wires 34 being anchored here in a head member 39 which can be coupled to a handling device 1 (see FIG. 14) and which is provided on the distal end 43 of the deflection mechanism 31.
- the deflection mechanism 31 here has two through the
- Connectors 32, 33 extending electrical conductors
- both conductors 36a, 36b are off-center in the
- Connecting members 32, 33 provided conductor bushings
- the conductor bushings 37a, 37b are each arranged in a region between two adjacent passage openings 35.
- the conductors 36a, 36b are guided through a conductor bushing 40 provided in the head member 39 to a head member end 41 and can thus be coupled to a handling device 1.
- the conductors 36a, 36b are guided past the joint mechanism 2 laterally through the conductor bushings 40.
- the conductor bushings 40 open like a funnel distally, so that there is enough room for movement
- the recess 47 for the passage of an actuating strand is arranged centrally in the cross section.
- the handling device 1 has two levers 3, 18 that can be moved synchronously for manipulation. With each of the levers 3,
- 36a, 36b are each electrically connected independently of one another to one of the contact sections 5, 20, so that the surgical instrument 50 is designed for bipolar high-frequency treatment when two different electrical potentials are applied, as described with reference to FIG.
- Each contact section 5, 20 independently acted upon by an electrical potential.
- the conductors 36a, 36b are guided proximally through the head member 39 and the deflection mechanism 31 and can be connected there to an HF generator.
- the endoscopic instrument 50 is accordingly for bipolar electrosurgical contacting of biological
- Fig. 15 shows a longitudinal sectional view of the endoscopic
- the coupling elements 48 which are designed as so-called swivel olives, can also be seen in this view.
- the coupling elements 48 are also with a central
- Recess 52 for carrying out an actuation strand educated An actuating strand can be fastened in an eyelet 49 anchored in the joint mechanism, so that a
- the two levers 3, 18 can be rotated and subjected to a closing force.
- the eyelet 49 to an internal thread and the
- the handling device 1 can also have a different jaw part as an alternative to a jaw part of a forceps instrument
- a base of the handling device in one piece as a joint mechanism 2 and a lever extension 3 from an insulating material, so that the joint mechanism is made from the insulating material.
- it is preferably a three-part structure with an electrically neutral joint mechanism 2 as the basis, a
- Lever extension 4 as an insulator and a contact section 5 as an electrically active contact surface.
- Head member 39 can be made of a metallic material, but are not used to conduct electricity. An electrical potential on the contact surfaces is carried exclusively by conductors 36 or cables, which conduct the current directly to the contact surface.
- All connections of the individual parts in particular miniaturized T-slots and safety pins or pins, can also be connected by an adhesive connection.
- the form-fitting connection is therefore a form-fitting securing of the glued connections.
- the contact surface of the jaw part formed with the contact cut 5 is electrically separated from the base or
- the contact surface of the contact section 5 thus forms the active gripping surface of the pliers.
- This structure is analogous to that on the other jaw part.
- the lever extension which is designed as an electrical insulator, is mainly subjected to pressure and therefore does not offer any mechanical weak points. Securing the form fit by means of materially connected, in particular welded, securing pins ensures that the individual parts can no longer fall apart.
- the deflection mechanism 31 can have different numbers of
- Steering wires 34 include. In particular, it can be a
- the conductor bushings 37 can be arranged, for example, as cable-carrying channels, radially like the steering wires 34 around the central axis 45 . This offers the advantage that the cables can follow any movements that are forced by the steering wires 34. Furthermore, the in the
- Conductor bushing 40 provided in head member 39 up to a head member end 41 and also the openings 16 for the conductors 36a, 36b through the electrically insulated sections of the joint mechanism 2 to the contact sections 5, 20 are arranged in such a way that the cables can pass through the
- Head member 39 can be routed directly to the contact sections 5, 20.
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Public Health (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Physics & Mathematics (AREA)
- Otolaryngology (AREA)
- Plasma & Fusion (AREA)
- Robotics (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021132425.4A DE102021132425B3 (de) | 2021-12-09 | 2021-12-09 | Handhabungsvorrichtung für ein elektrochirurgisches Instrument, Verfahren zur Herstellung einer Handhabungsvorrichtung und elektrochirurgisches Instrument |
| PCT/EP2022/083813 WO2023104601A1 (de) | 2021-12-09 | 2022-11-30 | Handhabungsvorrichtung für ein elektrochirurgisches instrument, verfahren zur herstellung einer handhabungsvorrichtung und elektrochirurgisches instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4432946A1 true EP4432946A1 (de) | 2024-09-25 |
Family
ID=84535900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22823456.3A Pending EP4432946A1 (de) | 2021-12-09 | 2022-11-30 | Handhabungsvorrichtung für ein elektrochirurgisches instrument, verfahren zur herstellung einer handhabungsvorrichtung und elektrochirurgisches instrument |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250049496A1 (de) |
| EP (1) | EP4432946A1 (de) |
| CN (1) | CN118401187A (de) |
| DE (1) | DE102021132425B3 (de) |
| WO (1) | WO2023104601A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10512785A (ja) * | 1995-01-24 | 1998-12-08 | シンバイオシス・コーポレーション | バイポーラ型内視鏡式手術用鋏器具 |
| DE19858512C1 (de) | 1998-12-18 | 2000-05-25 | Storz Karl Gmbh & Co Kg | Bipolares medizinisches Instrument |
| DE102006028001B4 (de) | 2006-06-14 | 2009-11-26 | Paul Peschke Gmbh | Chirurgische Greifzange |
| US9498278B2 (en) * | 2010-09-08 | 2016-11-22 | Covidien Lp | Asymmetrical electrodes for bipolar vessel sealing |
| US20140100564A1 (en) * | 2012-10-08 | 2014-04-10 | Covidien Lp | Jaw assemblies for electrosurgical instruments and methods of manufacturing jaw assemblies |
| DE102019121034A1 (de) | 2019-08-05 | 2021-02-11 | Karl Storz Se & Co. Kg | Endoskopische Vorrichtung |
| US20210346082A1 (en) * | 2020-05-08 | 2021-11-11 | Covidien Lp | Robotic surgical instruments and methods |
-
2021
- 2021-12-09 DE DE102021132425.4A patent/DE102021132425B3/de active Active
-
2022
- 2022-11-30 WO PCT/EP2022/083813 patent/WO2023104601A1/de not_active Ceased
- 2022-11-30 CN CN202280080945.1A patent/CN118401187A/zh active Pending
- 2022-11-30 US US18/717,501 patent/US20250049496A1/en active Pending
- 2022-11-30 EP EP22823456.3A patent/EP4432946A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021132425B3 (de) | 2023-05-04 |
| US20250049496A1 (en) | 2025-02-13 |
| WO2023104601A1 (de) | 2023-06-15 |
| CN118401187A (zh) | 2024-07-26 |
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