DE102016121036A1 - Medical device applicator and method - Google Patents

Abstract

The invention relates to a medical-technical applicator (300), a working element (20) for a medical-technical applicator (300), a connecting element (200) for a medical-technical applicator (300), a medical-technical applicator group, a medical-technical system and method for providing an operating signal for a medical device applicator and for producing a working element. In particular, the invention relates to a medical-technical applicator, comprising a working element (20), in particular an electrode, with a contact pin (100, 100 ', 100 "), wherein the contact pin (100, 100', 100") comprises a base body (102) , with guide sections (107) which are electrically conductive, at least one insulation section (108, 109) which is not electrically conductive, wherein the guide sections (107) are electrically conductively coupled to one another, a connection element (200) having a socket (206) , in the cavity (208) of the contact pin (100, 100 ', 100 ") can be arranged, comprising at least two adjacent to the cavity (208), electrically conductive contact surfaces (211, 213, 215, 221, 223, 225), the with a generator (10), in particular a high-frequency generator, are connectable.

Description

The invention relates to a medical-technical applicator, a working element for a medical-technical applicator, a connecting element for a medical-technical applicator, a medical-technical applicator group, a medical-technical system and method for providing an operating signal for a medical-technical applicator and for producing a working element.

Medical technology applicators are well known. It is also known that medical technology applicators are provided with working elements, for example electrodes. Furthermore, it is known that a medical-technical applicator can be designed for receiving different working elements. This serves, in particular, to be able to carry out various medical-technical processes with only one medical-technical applicator whose working elements can be exchanged or exchanged, depending on the type of application. However, different working elements often require different operating signals, which are usually provided by a generator, so that it is necessary to set at the generator which working element is to be supplied by the generator and / or which specific operating signal is to be provided.

In practice, however, the setting of an operating signal to the generator, which is suitable for a connected working element, but at risk.

In particular, the setting of a wrong operating signal for the currently connected working element, can lead to damage to the medical device applicator and / or the generator itself. In addition, the success of a medical examination or medical application can be reduced by a wrong operating signal. In the worst case, the health of a patient is endangered by a wrong operating signal. The existing medical applicators and methods of operating such medical applicators offer several advantages, but further improvements are desirable.

It is therefore an object of the present invention to provide a medical-technical applicator, a working element for a medical-technical applicator, a connecting element for a medical-technical applicator, a medical-technical applicator group, a medical-technical system and a method for providing an operating signal for a medical-technical applicator, which comprises one or more medical device reduce or eliminate several of the mentioned disadvantages. In particular, it is an object of the invention to provide a solution which enables the secure provision of an operating signal for a medical-technical applicator. Furthermore, it is an object of the present invention to provide a solution that increases the medical and / or technical, and / or economic safety in the application of medical-technical applicators.

According to a first aspect of the present invention, this object is achieved by a medical-technical applicator, comprising a working element, in particular an electrode, with a contact pin, wherein the contact pin comprises a base body, with guide sections, which are electrically conductive, at least one insulation section, which is substantially is not electrically conductive, wherein the guide portions are electrically conductively coupled to each other, a connecting element, such as a cable or a feed dog, with a socket, in the cavity of the contact pin can be arranged in a plug position, comprising at least two adjacent to the cavity, electrically conductive contact surfaces which can be connected to a generator, in particular a high-frequency generator, wherein in the plug-in position an identifier is formed by contact of at least one guide section with at least one contact surface.

The working element can be, for example, an electrode, in particular a resection electrode. The working element has the contact pin, which is arranged and designed to connect the working element with the medical device applicator. In particular, the contact pin is arranged and designed to electrically and / or electronically connect the working element to the medical-technical applicator. According to the invention, the contact pin has a main body which comprises guide sections. Furthermore, the guide sections are electrically conductively coupled to each other, wherein the guide sections are electrically conductive per se. This configuration can be achieved, for example, by a base body that is electrically conductive.

The base body is preferably made of steel and / or of a steel alloy or comprises this or these. Due to the design of the base body made of an electrically conductive material, the guide sections are electrically conductively coupled to one another on the base body. Alternatively, the main body consists essentially of an electrically non-conductive material. The guide sections are then preferably electrically conductive and can be connected to one another, for example via electrical connection elements, so that the guide sections are electrically conductively coupled to one another. Preferably, the guide sections are formed on the base body as rings, wherein the rings are preferably arranged coaxially to the base body. Further preferably, two or more rings are arranged on the base body. In addition, it is preferred that recesses are formed in the form of recesses by crimping the base body, so that preferably one or more insulating sections is or are formed by such recesses or depressions.

Furthermore, the base body comprises at least one insulation section, which is not electrically conductive. The insulation section is in particular arranged and configured such that substantially no electrically conductive connection to one or more of the guide sections is present therefrom. The resistance between an insulating section and a guide section is therefore greater by a multiple than the resistance between a first guide section and a second guide section.

The medical-technical applicator further comprises the connecting element, which has a socket with a cavity. This cavity is in particular arranged and designed such that the contact pin described above can be arranged within this cavity.

Within this cavity, the socket has at least two electrically conductive contact surfaces. The contact surfaces are preferably arranged and designed such that they can come into contact with the base body of a contact pin arranged in the socket. For example, the contact surfaces in the cavity of the socket, at least partially, protrude and / or are resiliently mounted, so that an inserted into the socket contact pin touches the contact surfaces and is ensured by the resilient mounting of the contact surfaces a constant connection between the body and the contact surfaces. Further preferably, the socket, the contact surfaces and the contact pin are arranged and formed such that when arranging the contact pin in the socket an interference fit, in particular by one or more contact surfaces, between them is formed. Furthermore or alternatively preferably, the bushing and the contact pin can be designed such that an extremely exact fit arises between them, and thus a continuous contact with contact surfaces preferably arranged flat in the hollow space relative to the inner peripheral surface.

By virtue of the contact of at least one guide section with at least one contact surface, a contact pairing is formed. The identifier is preferably formed by one, two or more contact pairings. Due to the insulation sections, there is the possibility that in the plug-in position not all contact surfaces are contacted with a guide section. Due to the different arrangement of insulation sections and / or guide sections on contact pins of different work elements, it is therefore possible to provide different identifiers for different work elements. The plug position preferably defines the position of the contact pin within the socket. In particular, the plug position can define the rotational and / or longitudinal position of the contact pin within the socket.

By an identifier, a work item can be properly identified and consequently a suitable for this work item operating signal can be provided. By this principle, a bit is generated by each contact pairing of a contact surface with a guide section. As a result, a large number of different work elements can be identified. For example, the provision of six contact surfaces within the socket and corresponding guide sections on the main bodies of contact pins could already encode 2 ⁶ , ie 64 different working elements.

It is preferred that the contact pin has a first positioning element and the connecting element has a second positioning element, wherein the first positioning element and the second positioning element are arranged and configured to fix the plug position of the contact pin within the socket. The second positioning element is preferably formed corresponding to the first positioning element. The insertion position can define, for example, the axial insertion depth of the working element. In addition, in the case of a round cross-section of the main body of the contact pin and a bush having a circular cross-section orthogonal to the insertion direction, the plug-in position may also include the rotational position. The consideration of the rotational position can also be relevant for angular or further cross-sectional geometries in order to ensure the specified identifier.

The invention is based, inter alia, on the finding that both manufacturing costs of the working elements can be saved by the described identifier as well as the required space and / or a required number of components can be reduced to the working elements, so that the scope of the invention can be increased , In particular, also compared to existing alternatives in which the working element provides a differentiability for the generator by different resistors and / or capacitors, so that the generator automatically detects which operating signal for the currently connected working element must be provided, the solution according to the invention offers various advantages. In particular, can on additional components, such as resistors and / or capacitors, are dispensed with the working elements, which can have a negative effect on the manufacturing costs and / or the required abdominal cavity.

In a preferred embodiment of the medical-technical applicator it is provided that at least one of the insulation sections is formed by a recess, wherein the recess preferably extends from a first end to a second end of the base body and / or further preferably has a substantially semicircular cross-section. In addition, it is preferred that the base body has two or more recesses. Further, it is preferred that at least one of the recesses extend from a first location of the contact pin spaced from the first end of the contact pin to a second location of the contact pin spaced from the second end of the contact pin. Preferably, the extent of the at least one recess in a longitudinal direction of the contact pin is smaller than the extent of the contact pin in the longitudinal direction. In a further preferred embodiment, it is provided that at least two recesses are arranged and these at least two recesses are arranged spaced apart in the circumferential direction of the contact pin.

By a recess on the main body of the contact pin can be formed in the region of the recess usually no contact between the body and a contact surface. Furthermore, an insulating section designed as a recess is permanently formed, since such a trained insulating section, for example, does not wear out.

Because of this, at the location of the recess, the electrical resistance between the contact surface and the base body, by the resulting spacing of these two components, many times greater than between a contact surface and a guide portion. The recesses can assume different geometric shapes. A recess may be formed, for example in the form of a groove, which may arise, for example, by crimping a contact tube of the working element. The preferred semicircular cross-section orthogonal to a longitudinal extent is preferably arranged such that the straight portion of this semicircular cross-section faces away from the center of the base body. Preferably, two or more recesses are arranged on the main body of the contact pin, each forming an insulating section. The two or more embodiments preferably have the same dimensions and / or the same cross-section. Further preferably, the two or more formations have different dimensions and / or different cross-sections.

In a further preferred embodiment, it is provided that the recess can be produced by a crimping tool. The recess is formed when using a crimping tool, in particular as a crimping point.

According to a further preferred embodiment variant of the medical-technical applicator, it is provided that at least one of the insulation sections is formed by an insulation coating. The insulation coating preferably has a planar extension and covers the intended insulation section. The insulation coating is in particular designed so that it does not essentially conduct an electric current. In particular, the insulation coating is formed in such a way that a voltage which is several times higher than that between a conducting section and a contact surface is applied between the latter and a contact surface applied to it. The insulation coating is preferably made of or comprises a ceramic. Further preferably, the insulation coating consists of a plastic, in particular a PTFE (polytetrafluoroethylene), or comprises this. The insulation coating can be arranged, for example, as a ceramic syringe and / or as a coating and / or as a film. Ceramic coated insulation sections and / or recesses are particularly preferred when a high-frequency signal is transmitted via the guide sections, since these have a high load capacity.

A further preferred further development of the medical-technical applicator is characterized in that an insulation section with an insulation coating and / or a socket is arranged and / or formed such that an insulation property of the insulation section is achieved by a single or multiple insertion and / or removal of the contact pin or is reduced or dissolved from the socket. By such an insulation coating, for example, the multiple use of a working element can be detected and possibly prevented.

Furthermore, it is preferably provided that the contact pin has a substantially circular cross-section orthogonal to a plug-in direction, and / or wherein the cavity of the socket has a substantially circular cross-section orthogonal to a plug-in direction.

The contact pin can orthogonal to a direction of insertion of the contact pin has a cross section having a substantially circular geometry. In addition, this cross section may also have an oval geometry. Further preferably, the cross section has a semicircular and / or semi-elliptical geometry. In addition, there is the possibility that the cross section has a polygonal geometry, for example a triangular, quadrangular or polygonal geometry. Further preferably, the cross section of the contact pin has a star-shaped and / or profiled geometry. The bushing preferably has a geometry corresponding to the contact pin. The socket may, for example, have a cavity that is orthogonal to a plug-in direction, a circular, and / or elliptical, and / or semicircular, and / or semi-elliptical, and / or triangular, and / or quadrangular, and / or polygonal, and / or star-shaped and / or profiled geometry.

A further particularly preferred embodiment variant of the medical-technical applicator provides that the contact surfaces are arranged spaced apart from one another in the axial direction and / or in the circumferential direction in the cavity. In particular, it is preferred that the contact surfaces are arranged on two or more axially spaced-apart ring sections, and the contact surfaces are preferably arranged in the circumferential direction equidistant from the ring sections. Furthermore, it is preferred that the contact surfaces each have the same size. Furthermore, the contact surfaces preferably have a substantially round, and / or oval and / or angular, in particular triangular and / or quadrangular, cross section.

According to a further preferred embodiment variant of the medical-technical applicator, it is provided that the contact surfaces are arranged and configured to transmit an operating signal, in particular a high-frequency signal and / or an ultrasonic signal. In this embodiment variant, the contact surfaces, in addition to the formation of an identifier for identifying a working element, are designed such that they transmit an operating signal, in particular a high-frequency signal and / or an ultrasound signal. In this embodiment, the contact surfaces for these two functions can be used, so that the size of the medical applicator and / or the components of the medical applicator can be further reduced or can. It is further preferred that the contact surfaces are formed individually controllable. This embodiment is particularly preferred for the previously mentioned embodiment variant with operating signals transmitted via the contact surfaces, so that an operating signal necessary for the medical treatment can be reliably transmitted here.

According to a further aspect of the invention, the object mentioned at the outset is achieved by a working element for a medical-technical applicator according to at least one of the previously described embodiments, comprising a contact pin having a main body with guide sections which are electrically conductive, at least one insulating section, which is substantially not electrically conductive, wherein the guide portions are electrically conductively coupled together. Preferably, the contact pin of the working element has a first positioning element.

According to a further aspect of the present invention, the object mentioned is achieved by a connecting element for a medical applicator according to at least one of the embodiments described above, comprising a socket, in the cavity of a contact pin can be arranged, wherein the socket at least two to the cavity adjacent, electrically conductive contact surfaces which are connectable to a generator, in particular a high-frequency generator. Preferably, the connecting element has a second positioning element.

According to a further aspect of the present invention, the object mentioned at the outset is achieved by a medical applicator group having at least two working elements according to the embodiment described above and at least one connecting element according to the previously described embodiment, wherein the at least two contact pins have differently arranged guide sections and / or or have different plug positions. By the differently arranged guide sections and / or different plug positions different identifiers are provided. Thus, the at least two working elements are distinguishable from each other, so that a generator can provide a suitable, preferably predetermined, operating signal for the respective working elements.

According to a further aspect of the present invention, the object mentioned at the outset is achieved by a medical-technical system comprising a medical-technical applicator according to at least one of the previously described embodiments, and / or a medical-technical working element according to the embodiment described above and / or a medical-technical connecting element according to FIG the embodiment described above and / or a medical-technical applicator group according to the embodiment variant described above, a Generator, in particular a high-frequency generator, wherein the generator is arranged and designed to provide a function of an identifier, a predetermined for this identifier operating signal.

According to another aspect of the present invention, the object mentioned at the outset is achieved by a method for providing an operating signal for a medical-technical applicator, comprising providing a medical-technical applicator according to at least one of the previously described embodiments, and / or a medical-technical working element according to the above described embodiment variant and / or a medical device connecting element according to the embodiment described above and / or a medical applicator group according to the embodiment described above, arranging a contact pin of a working element, in particular an electrode, in the socket in a plug position, determining an identifier and providing a for this identifier predetermined operating signal.

In a preferred embodiment of the method it is provided that this comprises the step of measuring an applied voltage and / or current at least one contact surface of the socket. Furthermore, it is preferably provided that the method comprises the step of identifying contact pairings by the applied voltage and / or current intensity at the contact surfaces. It is further preferred that the method comprises the step of determining an identifier from the combination of the identified contact pairings.

According to a further aspect of the present invention, the object mentioned at the outset is achieved by a method for producing a working element, in particular a working element according to the preceding aspect, comprising providing a working unit and a contact pin, wherein a main body of the contact pin has a cavity, arranging a clamping section the working unit within the cavity of the contact pin, clamping the clamping portion within the contact pin by crimping at predetermined crimping points such that resulting crimping locations form recesses, and fixing the crimping positions to provide an identifier. Preferably, a crimping tool is used for crimping.

The methods according to the invention and their possible further developments have features or method steps which make them particularly suitable for use in a medical-technical applicator according to the invention and in its further developments. For further advantages, variants and detailed embodiments of these further aspects and their possible further developments, reference is also made to the description made above of the corresponding features and further developments of the medical-technical applicator.

• 1a-1c: schematische, dreidimensionale Ansichten beispielhafter Ausführungsformen von Kontaktstiften;
• 2: eine schematische, dreidimensionale Ansicht einer beispielhaften Ausführungsform eines Verbindungselements, das mit einem Generator verbunden ist;
• 3: eine schematische, dreidimensionale Ansicht einer beispielhaften Ausführungsform eines medizintechnischen Applikators;
• 4: eine schematische, zweidimensionale, geschnittene Seitenansicht einer beispielhaften Ausführungsform eines Kontaktstiftes;
• 5: eine schematische, zweidimensionale, geschnittene Querschnittsansicht einer beispielhaften Ausführungsform eines Kontaktstiftes.

Preferred embodiments of the invention will be explained by way of example with reference to the accompanying figures. Show it:

• 1a - 1c FIG. 2: schematic, three-dimensional views of exemplary embodiments of contact pins; FIG.
• 2 3 is a schematic, three-dimensional view of an exemplary embodiment of a connector connected to a generator;
• 3 a schematic, three-dimensional view of an exemplary embodiment of a medical device applicator;
• 4 a schematic, two-dimensional, sectional side view of an exemplary embodiment of a contact pin;
• 5 FIG. 4 is a schematic, two-dimensional, sectioned, cross-sectional view of an exemplary embodiment of a contact pin. FIG.

In the figures, identical or substantially functionally identical or similar elements are denoted by the same reference numerals.

1a shows a schematic, three-dimensional view of an exemplary embodiment of a contact pin. 1a shows in particular a contact pin 100 with a basic body 102 extending lengthwise from a first end 104 to a second end 106 extends. Orthogonal to this longitudinal extent, the base body 1a02 has a cross-section, except for a recess 108 has a circular geometry. The main body 102 has guiding sections 107 and insulation portions, wherein the insulation portions through a recess 108 and by an insulation coating 109 are formed. The recess 108 is formed as a groove extending from the first end 104 to the second end 106 extends. The recess 108 is orthogonal to the extension from the first end 104 to the second end 106 a cross-section which is semi-elliptical, wherein the straight side of the semi-elliptical cross-section of the main body 102 turned away.

In the 1b and 1c are further embodiments of a contact pin 100 ' . 100 ' shown. The contact pins 100 . 100 ' . 100 ' differ in particular with respect to the formation of the recess 108 . 108 ' . 108 ' , The recess 108 ' in 1b extends from the second end 106 of the contact pin in the insertion direction S up to a location of the contact pin 100 ' which is essentially centered between the first end 104 and the second end 106 is arranged. The recess 108 ' of the contact pin in 1c extends from a first location of the contact pin 100 ' that from the first end 104 is spaced, to a second location of the contact pin 100 ' that from the second end 106 is spaced. The abovementioned spacings are preferably each smaller than half the extent of the contact pin 100 ' in the direction of insertion.

2 shows a schematic, three-dimensional view of an exemplary embodiment of a connecting element, which is connected to a generator. 2 shows in particular a connecting element 200 that a jack 206 includes. The socket 206 extends from a first end 202 to a second end 204 , Further, the sleeve has a tubular geometry with an outer diameter and a different, smaller inner diameter of this. This will be within the socket 206 a cavity 208 educated. The cavity 208 has a substantially circular cross-section orthogonal to a longitudinal axis and to this parallel insertion direction.

At a section leading to the first end 202 is adjacent, is a first ring section 210 educated. In the area of this ring section 210 has the socket 206 adjacent to the cavity 208 a first contact surface 211 , a second contact surface 213 and a third contact area 215 on. The contact surfaces 211 . 213 . 215 can only from the cavity 208 the socket 206 be contacted physically. The contact surfaces 211 . 213 . 215 are in particular arranged and designed such that a in the cavity 208 inserted contact pin 100 out 1a with the contact surfaces 211 . 213 . 215 can come into contact. The contact surfaces 211 . 213 . 215 are in the circumferential direction of the ring portion 210 equidistantly spaced.

In an area adjacent to the second end 204 is a second ring section 220 arranged, wherein in the region of the second ring portion 220 a fourth contact surface 221 , a fifth contact surface 223 and a sixth contact surface 225 are arranged. The fourth, fifth, sixth contact surface 221 . 223 . 225 are analogous to the contact surfaces 211 . 213 . 215 of the first ring section 210 arranged so that they only from the cavity 208 can be contacted physically. The contact surfaces 211 . 213 . 215 are in the circumferential direction of the ring portion 210 equidistantly spaced.

The contact surfaces 211 . 213 . 215 . 221 . 223 . 225 are each about a connecting element 212 . 214 . 216 . 222 . 224 . 226 with a generator 10 connected. The connecting elements 212 . 214 . 216 . 222 . 224 . 226 For example, may be formed as a cable and are preferably from an outer boundary of the socket 206 by a conversion of the socket towards the contact surfaces 211 . 213 . 215 . 221 . 223 . 225 guided.

Will be a contact pin 100 in the in 1a shown alignment in the insertion direction in the cavity 208 of the connecting element 200 out 2 introduced, are the contact surfaces 211 . 215 . 225 with the contact pin 100 connected. Through the recess 108 at the contact pin 100 , the contact pin in the embodiment shown is not with the contact surface 213 and the contact surface 223 physically in contact. The contact surface 221 forms with the contact pin also no contact pairing, so that the insulation section 109 Essentially no electrical contact allows. By contacting the first contact surface 211 and the third contact surface 215 and the sixth contact surface 225 can the training of the contact pin 100 from the generator 10 be recognized and derived from it, which operating signal for the contact pin 100 must be made available.

3 shows a schematic, three-dimensional view of an exemplary embodiment of a medical device applicator. 3 shows in particular a medical device applicator 300 with a connecting element 200 that a jack 206 with a cavity 208 having, wherein in the cavity 208 the contact pin 100 ' can be arranged. In particular, the contact pin 100 ' inside the cavity 208 be arranged by the contact pin 100 ' in the direction of insertion S in the cavity 208 is led into it. The contact pin 100 ' has two isolation areas as a recess 108 ' and as an insulation coating 109 are formed. The recess 108 ' extends in the longitudinal direction and / or plugging direction S from the second end 106 of the contact pin 100 ' up to a point of the contact pin 100 ' which is essentially centered between the first end 104 and the second end 106 the contact pin is arranged.

Through the connection of the contact pin 100 ' with the work item 21 , which is formed as an electrode, becomes a working element 20 educated. Through the training of the working element 20 can the electrode 21 over the contact surfaces of the connecting element 200 be supplied on the one hand with an operating signal and on the other hand, the electrode 21 be recognized by a generator, not shown here and as a result, a suitable operating signal are provided.

Through the medical technology applicator 300 can be guaranteed that one over a contact pin 100 ' connected electrode 21 always supplied with a correct operating signal. As a result, it is now not possible for a user to set a wrong operating signal on the generator and thus impair the technical functionality and / or the health of a patient. In addition, the known in the prior art arrangement of other resistors and / or capacitors and / or other components is not needed or to a lesser extent, which could allow the detection of an electrode. By means of the medical-technical applicator according to the invention shown here, a cost-effective and reliable possibility is provided of recognizing an electrode without any doubt.

4 shows a schematic, two-dimensional, sectional side view of an exemplary embodiment of a contact pin. Inside a cavity 1011 of the contact pin 101 is a clamping portion of a working element 20 ' arranged. A crimping tool (not shown) may be attached to the outer wall of the contact pin 101 to be ordered. A crimping tool is particularly designed to perform crimping. Crimping is to be understood in particular as a joining method in which two joining partners are joined together by plastic deformation. By crimping by means of a crimping tool at a crimping point of the contact pin 101 , the contact pin is plastically deformed at the crimping point. In particular, a recess or a recess is formed here by the crimping, which can act as an insulating section. By selective crimping on selected and / or fixed crimp points, an identifier can thus be defined in combination with contact surfaces.

5 shows a schematic, two-dimensional, sectional cross-sectional view of an exemplary embodiment of a contact pin. A contact pin 101 ' may for example have a cross section corresponding to the dashed circular contour. Furthermore, the contact pin 101 ' for example, the recesses 501 exhibit. In particular, it is preferred that the recesses 501 are introduced by crimping, in particular by a crimping tool. Further preferably, the contact pin 101 ' alternatively or additionally, the recesses 502 exhibit.

LIST OF REFERENCE NUMBERS

10

generator

20, 20 '

work item

21, 21 '

work unit

100, 100 ', 100 ", 101, 101'

pin

102

body

104

first end

106

second end

107

guide section

108, 108 ', 108 "

recess

109

insulation coating

200

connecting member

202

first end

204

second end

206

Rifle

208

cavity

210

first ring section

211

first contact surface

212

first connecting element

213

second contact surface

214

second connecting element

215

third contact surface

216

third connecting element

220

second ring section

221

fourth contact surface

222

fourth connection element

223

fifth contact surface

224

fifth connecting element

225

sixth contact surface

226

sixth connecting element

300

Medical device applicator

501, 502

recess

1011

cavity

S

plug-in direction

Claims (15)

Medical-technical applicator (300), comprising - a working element (20), in particular an electrode, with a contact pin (100, 100 ', 100 ", 101, 101'), - the contact pin (100, 100 ', 100", 101 , 101 ') comprises a main body (102), with ○ guide sections (107) which are electrically conductive, ○ at least one insulating section (108, 109) which is substantially non-electrically conductive, ○ wherein the conductive sections (107) are electrically conductively coupled to one another, - a connecting element (200) having a socket (206) into whose cavity (208) the contact pin (100, 100 ', 100 ", 101, 101') can be arranged in a plug-in position, comprising ○ at least two electrically conductive contact surfaces (211, 213, 215, 221, 223, 225) adjoining the hollow space (208) , which are connectable to a generator (10), in particular a high frequency generator, - wherein in the plug position, an identifier by contact of at least one guide portion with at least one contact surface (211, 213, 215, 221, 223, 225) is formed. Medical-technical applicator (300) according to the preceding claim, wherein at least one of the insulating sections (108, 109) is formed by a recess, wherein the recess preferably extends from a first end (104) to a second end (106) of the main body (102). extends and / or further preferably has a substantially semicircular cross-section. Medical-technical applicator (300) according to at least one of the preceding claims, wherein the recess can be produced by a crimping tool. A medical device applicator (300) according to at least one of the preceding claims, wherein an insulation portion (108, 109) having an insulation coating (109) and / or a bushing (206) is arranged and formed such that an insulation property of the insulation coating (109 ) is reduced or dissolved by a single or multiple removal of the contact pin (100, 100 ', 100 ", 101, 101') from the socket (206). Medical device applicator (300) according to at least one of the preceding claims, - Wherein the contact pin (100, 100 ', 100 ", 101, 101') orthogonal to a plug-in direction (S) has a substantially circular cross section, and / or - Wherein the cavity (208) of the bush (206) orthogonal to a plug-in direction (S) has a substantially circular cross-section. Medical device applicator (300) according to at least one of the preceding claims, wherein the contact surfaces (211, 213, 215, 221, 223, 225) in the axial direction and / or circumferentially spaced from each other in the cavity (208) are arranged. Medical device applicator (300) according to at least one of the preceding claims, wherein the contact surfaces (211, 213, 215, 221, 223, 225) are arranged on two or more axially spaced-apart ring sections (210, 220) and the contact surfaces (211, 213 , 215, 221, 223, 225) are preferably arranged equidistantly in the circumferential direction on the ring sections (210, 220). Medical-technical applicator (300) according to at least one of the preceding claims, wherein the contact surfaces (211, 213, 215, 221, 223, 225) are arranged and configured to transmit an operating signal, in particular a high-frequency signal and / or ultrasound signal. Medical-technical applicator (300) according to at least one of the preceding claims, wherein the contact surfaces (211, 213, 215, 221, 223, 225) are individually controllable. Working element (20) for a medical-technical applicator (300) according to at least one of Claims 1 - 9 comprising - a working unit (21), - a contact pin (100, 100 ', 100 ", 101, 101') having a main body (102) with - conductive sections (107) which are electrically conductive, - at least one Insulating section (108, 109) that is substantially non-electrically conductive, and - wherein the conductive sections (107) are electrically conductively coupled together. Connecting element (200) for a medical-technical applicator (300) according to at least one of Claims 1 - 9 a socket (206) into the cavity (208) of which a contact pin (100, 100 ', 100 ", 101, 101') can be arranged, the socket (206) being at least two adjacent to the cavity (208) , electrically conductive contact surfaces (211, 213, 215, 221, 223, 225) which are connectable to a generator (10), in particular a high-frequency generator. Medical-technical applicator group, with at least two working elements (20) according to Claim 10 and at least one connecting element (200) after the preceding one Claim 11 , - wherein the at least two contact pins (100, 100 ', 100 ", 101, 101') differently arranged guide sections (107) and / or have different plug positions. Medical-technical system, comprising - a medical-technical applicator (300) according to at least one of Claims 1 - 9 , and / or a medical-technical working element (20) according to Claim 10 and / or a connecting element (200) according to Claim 11 and / or a medical-technical applicator group according to Claim 12 , - A generator (10), in particular a high-frequency generator, - wherein the generator (10) is arranged and configured to provide a function of an identifier predetermined for this identifier operating signal. Method for providing an operating signal for a medical-technical applicator (300), comprising - providing a medical-technical applicator (300) according to at least one of Claims 1 - 9 ; and / or a working element (20) according to Claim 10 and / or a connecting element (200) according to Claim 11 and / or a medical-technical applicator group according to Claim 12 Arranging a contact pin (100, 100 ', 100 ", 101, 101') of a working element (20), in particular an electrode, in the socket (206) in a plug-in position, - determining an identifier and providing a signal predetermined for this identifier operating signal. Method for producing a medical-technical applicator (300), in particular a medical-technical applicator (300) according to at least one of Claims 1 - 9 , comprising - providing a connecting element (200), in particular a connecting element (200) according to Claim 11 - Providing a working unit (21) and a contact pin (100, 100 ', 100 ", 101, 101'), - wherein a main body of the contact pin has a cavity, - Arranging a clamping portion of the working unit (21) within the cavity of the contact pin - fixing crimping points to provide an identification with the contact surfaces of the connecting element (200), - clamping the clamping section within the contact pin by crimping at the predetermined crimping points in such a way that resulting crimping points have recesses.

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