Abstract:
A monitoring system for reprocessing a surgical instrument, where the monitoring system includes: a fluid line provided for supplying a fluid to the surgical instrument, the fluid line being configured to be connected to the surgical instrument; and a fluid line connection for connecting the fluid line to the surgical instrument; wherein the fluid line connection is configured to close an electrical contact in the case of a functional connection of the fluid line to the surgical instrument.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    The present application is a continuation of PCT/EP2016/055983 filed on Mar. 18, 2016, which is based upon and claims the benefit to DE 10 2015 206 267.8 filed on Apr. 8, 2015, the entire contents of each of which are incorporated herein by reference. 
     
    
     BACKGROUND 
     Field 
       [0002]    The present application relates to a monitoring system for reprocessing surgical instruments, wherein a fluid line is provided for supplying a fluid to the surgical instrument, which fluid line is connectable or connected to the surgical instrument, wherein the fluid line has a fluid line connection for connecting to the surgical instrument. The present application further relates to a method for connecting a surgical instrument to at least one fluid line which, during the reprocessing of the surgical instrument, conducts fluid to the surgical instrument or conducts fluid away from the surgical instrument, wherein the at least one fluid line is connected to at least one connection of the surgical instrument. The present application further relates to a method for operating a reprocessing apparatus for reprocessing a surgical instrument. 
       Prior Art 
       [0003]    A reprocessing apparatus and a method for operating a corresponding reprocessing apparatus or respectively a reprocessing system is disclosed in DE 10 2012 218 811 A1. In this case, corresponding baskets, which may be introduced into a reprocessing apparatus, are loaded with surgical instruments, wherein fluid lines are connected to instrument connections of the surgical instrument. In order to permit a reprocessing of the surgical instruments corresponding channels of the surgical instrument are rinsed with fluid. 
         [0004]    In the reprocessing of surgical instruments, such as for example endoscopes, it is known to undertake a tightness test when rinsing the internal channels of surgical instruments, so that in the case of an incorrectly connected instrument adapter or respectively an incorrectly connected fluid line, an interruption to the process occurs during the reprocessing of the surgical instrument. In order to carry out the tightness test, for example in the case of an incorrectly connected adapter, a certain level of excess pressure may be created and it may be observed how the drop in pressure progresses within a test period. When rinsing the internal channels, for identifying an incorrectly connected adapter or respectively an incorrectly connected fluid line, water is generally passed in the reprocessing apparatus through the surgical instrument and by a corresponding measurement of water pressures or water quantities it is identified whether a connection is faulty. In this case, the rinsing water has to be initially pumped off before the connection may be corrected. This process is relatively time-consuming. 
       SUMMARY 
       [0005]    It is the object to provide a very rapid and efficient means of providing a correct connection of fluid lines to a surgical instrument. 
         [0006]    Such object can be achieved by a monitoring system for reprocessing surgical instruments, wherein a fluid line is provided for supplying a fluid to the surgical instrument, which fluid line is connectable or connected to the surgical instrument, wherein the fluid line has a fluid line connection for connecting the fluid line to the surgical instrument, which is developed by the fluid line connection closing an electrical contact in the case of a functional connection to the surgical instrument. 
         [0007]    “Functional connection” within the scope of this disclosure is understood as a fluid-tight connection, by which a reliable rinsing and namely leak-free rinsing of the surgical instrument is permitted, in particular a lumen or a channel or a plurality of channels in the surgical instrument. A “functional connection” is also understood as a connection in which a defined or predeterminable leakage is provided. Via this leakage, external surfaces of the connection may also be acted upon by fluid, such as for example a disinfecting solution. As a result, a disinfection is possible over the entire surface. A functional connection is present, for example, when it is ensured that the connection of the fluid line to the surgical instrument remains securely connected, even in the case of the highest possible pressures used during the rinsing by means of a fluid. 
         [0008]    This can be ensured by an electrical contact being closed only in the case of a functional connection of the fluid line connection to the surgical instrument, which may serve to identify to an operator that a functional connection is present. 
         [0009]    Within the scope of this disclosure, “closing an electrical contact” is understood that an electrical current is able to flow via the electrical contact. The electrical contact may be permitted, for example, by a switch such as a push button switch which is arranged on the fluid line connection or, for example, by a contact being closed between an external surface of the fluid line, which is electrically conductive, and an external surface of the surgical instrument or an instrument connection of the surgical instrument which is at least partially conductive. 
         [0010]    When closing the electrical contact a signal which is detectable by an operator can be generated. The detectable signal may be a tone or an optical image, such as for example an optical image on a monitor or a display apparatus of the monitoring system. Alternatively or additionally, a movement such as for example a vibration may be produced. 
         [0011]    An electrical connection can be provided from the electrical contact, such as via the fluid line, to a control apparatus of the monitoring system. As a result, in a simple manner, the control apparatus may serve to generate signals which are detectable by the operator. 
         [0012]    The fluid line can be a hose. 
         [0013]    If the electrical connection is or comprises a conductive strand or a conductive layer arranged in or on the fluid line, a user-friendly monitoring system can be provided. The electrically conductive strand or the electrically conductive layer can be metal. Two conductive layers or conductive strands may also be provided in or on the fluid line in order to permit a circuit from the control apparatus through the fluid line to the connection and back. The conductive strand or the electrically conductive layer can be coated at least partially with an electrically non-conductive material. 
         [0014]    Alternatively, only one electrical line or respectively electrical connection may be provided and thus via an earth connection or an earth lead, for example, a corresponding current may be discharged via the surgical instrument. 
         [0015]    The fluid can be a liquid. 
         [0016]    The fluid line connection can have an electrically conductive contact surface on the front face, the contact surface in the case of a functional connection of the fluid line connection to the surgical instrument can be in electrical contact with an electrically conductive surface of the surgical instrument. In this case, two electrically conductive contact surfaces can be provided on the front face of the fluid line connection, which by contact with the surgical instrument are to be electrically connected together or are electrically connected together. 
         [0017]    A reprocessing apparatus for reprocessing surgical instruments can comprise the above monitoring system. 
         [0018]    Such object can also be achieved by a method for connecting a surgical instrument to at least one fluid line which, when reprocessing the surgical instrument, conducts fluid to the surgical instrument or conducts fluid away from the surgical instrument, wherein the at least one fluid line is connected to at least one connection of the surgical instrument, wherein by means of a control apparatus it is monitored whether a functional connection of the at least one fluid line to the at least one connection of the surgical instrument is present, whereupon the control apparatus generates a signal. 
         [0019]    In this case it is established whether a functional connection of the at least one fluid line to the at least one connection of the surgical instrument is present, for example by switching a switch, which is switched on in a final mounting position of a fluid line after it has been connected to the surgical instrument or due to a contact of electrical lines, so that in this manner an electrical contact is also closed in the case of a functional connection of the at least one fluid line to the at least one connection of the surgical instrument. The control apparatus can comprise a testing apparatus or is a testing apparatus. 
         [0020]    An error message can be generated in the case of a non-functional connection of the fluid line to the surgical instrument. For example, the error message may be produced when a predeterminable time has passed after an operator has initiated the connection or respectively the connecting process without it resulting in a functional connection of the fluid line. It may also be provided that the control apparatus starts a computer program or a waiting loop as soon as an operator inputs that a connection is now desired from a surgical instrument to a fluid line or to a plurality of fluid lines. The program in this case may provide the means of predetermining instructions to the operator for the correct connection of fluid lines or a fluid line to the surgical instrument. The operator may then successively connect the fluid lines and after each connection of a fluid line, for example, a test button may be actuated by the operator or an initializing command may be input in order to monitor whether a functional connection is present. 
         [0021]    It may also be provided that at the moment when the surgical instrument is conveyed into the region of a loading station, it is automatically identified which surgical instrument is present, so that for the monitoring system it is clear which fluid connections have to be connected. This may be brought to the attention of an operator by the monitoring system, for example via the display on a display unit. To this end, the surgical instrument may be provided with identifying features, such as for example an RFID chip, via which a clear identification of the surgical instrument is possible. This loading station may be an apparatus which is spatially separate from a reprocessing apparatus and serves, for example, to load baskets with surgical instruments which are to be reprocessed, for introducing into a reprocessing apparatus in a convenient and secure manner. 
         [0022]    The signal can be a confirmation signal which is generated by a control apparatus, such as a reprocessing apparatus, such as when an electrical contact provided on a fluid line connection is closed. The confirmation signal may, for example, be a tone. 
         [0023]    For connecting a plurality of fluid lines to the surgical instrument an image of the connections to be made can be provided on a display apparatus, such as of the monitoring system, wherein after the operator has acknowledged a connection which has been made it is monitored by the control apparatus whether the connection which has been made is functional. In the event that the connection is not functional, an error message which is assigned to the connection which has been made can be generated. The error message may be an optical display or even an acoustic signal. 
         [0024]    The faulty connection can be displayed on the display apparatus. 
         [0025]    Additionally, it is provided to carry out a method for operating a reprocessing apparatus for reprocessing a surgical instrument using an aforementioned method for connecting a surgical instrument to at least one fluid line, wherein a reprocessing of the surgical instrument is initiated only in the case of a functional connection of all fluid lines. When reprocessing the surgical instrument, in particular a fluid, such as a liquid, is conveyed by the fluid line or the fluid lines. 
         [0026]    During the reprocessing of the surgical instrument or respectively during the operation of the reprocessing apparatus it can be monitored whether the connection or the connections of the fluid lines remains or remain functional. 
         [0027]    By means of the provided monitoring system and/or reprocessing apparatus, it is possible to identify an incorrectly connected adapter or respectively an incorrectly connected fluid line to a surgical instrument immediately when connecting the fluid line to the surgical instrument. To this end, contacts, for example front face contacts, are provided on the end portions of the fluid line or respectively the fluid lines or the fluid line connections. With a correctly connected fluid line connection, the contact which has been made is then electrically closed. The electrically closed contact is represented, for example by means of the control apparatus, by a combination of acoustic and visual feedback. 
         [0028]    Immediately when connecting the fluid line connection or respectively the fluid line to the surgical instrument, the operator can receive, by means of the control apparatus, an acoustic signal, for example, a single tone in the case of a correct connection and a repeated tone in the case of a faulty connection. In this case, it is not necessary for the operator to look away from the fluid line connection. 
         [0029]    Additionally, it is also expedient to represent visual feedback, for example, on a display apparatus, for example a green check mark may be provided for each correctly connected fluid line connection or respectively each correctly connected fluid line on the display apparatus. Accordingly, for each incorrectly connected fluid line or respectively each incorrectly connected fluid line connection a red cross may be shown. 
         [0030]    Thus before the actual start of a reprocessing process, the operator receives an acknowledgement as to whether the inserted surgical instrument is correctly connected. 
         [0031]    The functionality of the monitoring system or respectively the reprocessing apparatus can be developed by an automatic instrument identification. In this case, the monitoring system or respectively the reprocessing apparatus identifies the surgical instrument and, as a result, may show the correct fluid line connections on a display apparatus graphically or in the form of a list. The successful or faulty connection for each individual fluid line connection or respectively for each individual fluid line may be visualized on this image on the display apparatus. 
         [0032]    The identification of whether the fluid line or respectively the fluid line connections are correctly connected may be undertaken as a previous process step before an actual reprocessing process. In this previous process step, for example, the front surface contacts of the fluid lines or respectively the fluid line connection may be activated via the control apparatus. By a subsequent deactivation of the contacts it is possible to eliminate the occurrence of a faulty detection due to water which correspondingly enters or circulates during the reprocessing. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0033]    Further features are disclosed from the description of embodiments, together with the claims and the accompanying drawings. Embodiments may fulfill individual features or a combination of a plurality of features. 
           [0034]    The embodiments are described hereinafter without limiting the general inventive idea using exemplary embodiments with reference to the drawings, wherein relative to all of the details, which are not shown in more detail in the text, reference is expressly made to the drawings, in which: 
           [0035]      FIG. 1  illustrates a schematic view of a monitoring system, 
           [0036]      FIG. 2  illustrates a schematic view of a connection of a fluid line to a surgical instrument in a schematic detailed view, and 
           [0037]      FIG. 3  illustrates a schematic sectional view through a schematic front view of a fluid line. 
       
    
    
     DETAILED DESCRIPTION 
       [0038]    In the drawings, the same or similar elements and/or parts are provided in each case with the same reference numerals, so that in each case a further description is dispensed with. 
         [0039]      FIG. 1  shows schematically a monitoring system  11  for the connection of a surgical instrument  10  to fluid lines  12 - 16 . 
         [0040]    Surgical instruments, such as for example endoscopes, have channels or lumens which have to be cleaned and disinfected after the use of the surgical instrument. To this end, these instruments are typically placed into a reprocessing apparatus. In the reprocessing apparatus a cleaning fluid is passed from outside onto the surgical instrument and additionally the corresponding channels or respectively lumens  23 , amongst other things, are rinsed with a cleaning fluid. 
         [0041]    In order to be able to undertake correct cleaning, i.e. complete cleaning and disinfecting, i.e. reprocessing the surgical instrument, it is necessary that the fluid lines  12 - 16  with the fluid line connections  12 ′- 16 ′ on the front face or respectively end face are connected to the instrument connections  32 - 36 . The connection may be leakage free. Alternatively, a connection may be provided with a defined leakage. 
         [0042]    In order to be able to undertake a reprocessing in an efficient manner, it is provided, when providing the surgical instrument or respectively instrument connections  32 - 36  with the fluid line connections  12 ′- 16 ′ or respectively with the fluid line  12 - 16 , to monitor whether the connections are functional, for example, such that they have been completely correctly implemented. To this end, in the case of a functional connection, an electrical contact is closed. The electrical contact may be closed, for example as shown in  FIG. 2 , by two electrical lines  20 ,  21  which are arranged on the outer face of the fluid line  12 , as shown in  FIG. 3 , extending as far as the front face and in each case forming an end contact surface  22  or respectively  23  at that point, and which are brought into electrical contact with an electrically conductive surface  37  of the surgical instrument  10 . As a result, an electrical current may be passed from a controller  24 , such as a computer or CPU, via the closed electrical contact between the end contact surfaces  22  and  23  and the electrically conductive surface  37  of the endoscope  10 , whereby it may be established that a correspondingly functional connection is present. Alternatively, a resistance between the electrical lines  20  and  21  may be measured, wherein when a predeterminable value for the resistance is fallen below, a functional connection is assumed. 
         [0043]    This type of electrical contact is just one type of many conceivable options. Alternatively, a switch which is arranged in the fluid line or on the fluid line and is closed in the case of contact with an end surface of the surgical instrument may also be provided. Alternatively, it may also be provided to furnish the fluid line with a fluid line connection, which may be connected in the manner of a bayonet connection to an instrument connection of the surgical instrument  10 , and to this end closes an electrical contact only with a correspondingly complete rotation of the bayonet in the object. 
         [0044]    In  FIG. 1  it is shown entirely schematically and generally how corresponding electrical lines  20  are passed from the connection between the fluid line and the surgical instrument to a control apparatus  24 . Additionally, for example, the fluid line  13  is still separate from the instrument connection  33 . The fluid line  13  is intended to be pushed further in the direction of the arrow onto the instrument connection  33 . The corresponding fluid lines  12 - 16  are shown only partially in  FIGS. 1 and 2 . 
         [0045]    With a corresponding functional connection of the respective fluid line connection to the surgical instrument or respectively the respective instrument connection  32 - 36  the control apparatus is able to generate an acoustic signal  18  via a loudspeaker  26  and/or generate a visual signal  19  or  19 ′ on the display apparatus  25 , which display to an operator whether the connection is functional or not. 
         [0046]    The fluid lines  12 - 16  may be hoses, such as flexible fluid lines. In  FIG. 3  it is shown schematically how an electrical contact  17  is produced. This electrical contact  17  is produced via the end contact surfaces  22  and  23  when said contact surfaces come into contact with an electrically conductive surface. In this case, an electrical contact  17  is closed, which is transmitted to the control apparatus  24  via the corresponding electrical lines  20  or respectively  21  connected to the end contact surfaces  22  and  23 . 
         [0047]    While there has been shown and described what is considered to be preferred embodiments, it will, of course, be understood that various modifications and changes in form or detail could readily be made without departing from the spirit of the invention. It is therefore intended that the invention be not limited to the exact forms described and illustrated, but should be constructed to cover all modifications that may fall within the scope of the appended claims. 
       LIST OF REFERENCE NUMERALS 
       [0000]    
       
           10  Surgical instrument 
           11  Monitoring system 
           12 ,  13 ,  14 ,  15 ,  16  Fluid line 
           12 ′,  13 ′,  14 ′,  15 ′,  16 ′ Fluid line connection 
           17  Electrical contact 
           18  Acoustic signal 
           19 ,  19 ′ Visual signal 
           20 ,  21  Electrical line 
           22 ,  23  End contact surface 
           24  Control apparatus 
           25  Monitor 
           26  Loudspeaker 
           32 ,  33 ,  34 ,  35 ,  36  Instrument connection 
           37  Electrically conductive surface