end detection device

Abstract

An intestinal detector comprising a first end detector and a second end detector arranged at a non-zero distance from the first end detector, wherein the intestinal detector comprises an intermediate detector arranged between each end detector and spaced apart in such a configuration that the intermediate detector will electrically connect to any intestine hanging from the end detector and extending between the first end detector and the second end detector.

Description

TECHNICAL FIELD

[0001] The present invention relates to a detection device and method for detecting the end of an intestine being processed. BACKGROUND

[0002] In order to determine the quality and to cut the carcass into valuable meat portions, the position of the inspection and processing equipment relative to the anatomical parts of the carcass is controlled. The intestines of the animal are processed in a similar way, for example the natural casing is of major interest.

[0003] Processing the intestines of an animal involves several steps, including cleaning the intestines, scraping the inner wall of the intestines to remove the mucus layer and scraping the outside of the intestines. Additional measuring steps are performed in order to package the intestines according to their size and quality. In the measuring steps, the diameter of each intestine is detected in order to classify the intestines using the diameter and to cut the intestines into pieces according to the diameter along the length of the intestines.

[0004] One important step in the processing is the measurement of the length, which requires the detection of the end of the intestine while processing the intestine. Therefore, several methods for identifying the end of the intestine have been developed. Some prior art methods are based on an optical detection of the presence of the intestine. The optical detection can be done by using an optical sensor, such as a camera. However, there are several disadvantages of using a camera.

[0005] First, several cameras are needed to cover all sides of the intestine. Furthermore, a complex and expensive illumination is usually needed due to the fact that the application of a camera can be prevented by insufficient illumination. Furthermore, water from the intestine can splash onto the camera, so the water has to be wiped off to maintain a high camera data quality.

[0006] Furthermore, methods using a laser beam intersecting the intestine have been developed in the prior art. A detector unit can determine the end of the intestine by recording whether the laser beam reaches the detector. The alignment of the laser source and the detector has to be accurate and, as with the camera, the laser source and the detector have to be kept clean from any water droplets to avoid refraction of the laser beam.

[0007] Therefore, it would be an advantage to be able to provide an alternative method of identifying the end of the intestine. SUMMARY

[0008] The object of the present invention can be achieved by an intestine detector. Preferred embodiments are defined in the dependent subclaims, explained in the following description and shown in the attached drawings.

[0009] The intestine detector according to the present invention comprises a first end detector and an intermediate detector, the intermediate detector being arranged and spaced apart from the first end detector, the intermediate detector being electrically connected to any intestine hanging on the first end detector.

[0010] Thus, the amount of electricity between the end detectors and the middle detector can be measured to detect whether a bowel is hanging on the bowel detector.

[0011] In one embodiment, the bowel detector comprises a first end detector and a second end detector arranged at a non-zero distance from the first end detector, wherein the bowel detector comprises a middle detector arranged between each end and spaced apart detectors adopt a configuration in which the middle detector electrically connects to any bowel hanging on the end detectors and extending between the first end detector and the second end detector.

[0012] In one embodiment, the bowel detector comprises a circuit configured to detect the resistance between the middle detector and any end detector.

[0013] In one embodiment, the bowel detector comprises a circuit configured to detect the current between any end detector and the middle detector.

[0014] In one embodiment, the bowel detector comprises a circuit configured to detect the potential difference between any end detector and the middle detector.

[0015] In one embodiment, each of the end detectors is shaped to receive and hold a bowel hanging on the end detector.

[0016] In one embodiment, the bowel detector comprises two end detectors having the same geometry.

[0017] In one embodiment, the end detectors comprise a hook-shaped portion. Thus, the end detectors can receive and hold a bowel hanging thereon.

[0018] In one embodiment, if the bowel detector comprises two end detectors, the middle detector has a straight distal portion next to the first end detector and extending between the first end detector and the second end detector.

[0019] In one embodiment, the end detectors and the middle detector are made of metal. In a preferred embodiment, the end detectors and the middle detector are made of stainless steel.

[0020] In one embodiment, the end detectors extend through a mounting box comprising electrical connection structures for connecting a circuit configured to perform one of a plurality of electrical measurements through the detectors.

[0021] In one embodiment, the bowel detector comprises two receiving portions of the same shape, each receiving portion comprising a set of detectors and a middle detector arranged between them.

[0022] In an embodiment, the intestinal detector is electrically insulated from the wall to which the intestinal detector is configured to be attached by an insulator.

[0023] In an embodiment, the detection device comprises an intestinal detector according to the present invention.

[0024] In an embodiment, the intestinal detector comprises the same electrical circuit as the detection device.

[0025] In an embodiment, the intestinal detector and the detection device according to the present invention use the same electrical circuit.

[0026] The detection device can be advantageous if the detection device is a detection device configured to detect a leak hole in an intestine hanging over a tubular member, the tubular member having a perforated portion configured to distribute a flow of liquid through the perforated portion and thereby pressurize said perforated portion. The intestine, when the intestine moves with a non-zero speed along a longitudinal axis of the tubular member, wherein the detection device comprises:

[0027] - an electrically conductive and axially extending sleeve-shaped surrounding portion at least partly surrounding a circumference of the tubular member;

[0028] - an electrical circuit arranged and configured to measure an electrical quantity established between the surrounding portion and the liquid of the pressurized intestine.

[0029] Thus, a detection device can be provided which is able to identify a hole in an intestine hanging over a tubular member in a reliable and easy manner.

[0030] In an embodiment, the tubular member is an electrically conductive tubular member. In an embodiment, the tubular member is a rod-shaped member made of metal.

[0031] If the tubular member is not electrically conductive, the electrical circuit can be configured to measure an electrical quantity between the surrounding portion and a contact structure electrically connected to the liquid, such as an anode.

[0032] By providing an electrically conductive and axially extending sleeve-shaped surrounding portion at least partly surrounding a circumference of the tubular member, an electrical quantity established between the surrounding portion and the liquid of the pressurized intestine can be measured.

[0033] The electrical circuit is arranged and configured to measure an electrical quantity established between the surrounding portion and the liquid of the pressurized intestine.

[0034] In an embodiment, the electrical circuit is arranged and configured to measure an electrical quantity established between the surrounding portion and the tubular member.

[0035] In an embodiment, the electrical quantity is an electrical resistance.

[0036] In an embodiment, the electrical quantity is an electrical current. In an embodiment, the electrical quantity is an electrical voltage.

[0037] Since the intestine is pressurized, a water jet will occur when a part of the pressurized intestine comprises a hole. When the part of the intestine comprising the hole passes the surrounding part, the water jet will extend between the water inside the intestine and the surrounding part and thus connect the water inside the intestine and the surrounding part. Thus, the electrical resistance is reduced compared to the case where the water inside the intestine and the surrounding part are separated by the intestine and the surrounding air only. Thus, by measuring the electrical current or the electrical resistance between the surrounding part and the tubular member, it can be detected whether the intestine comprises a hole passing the surrounding part.

[0038] The velocity is typically in the range 0.5-3 m / s.

[0039] In one embodiment, the velocity is in the range 1-2.5 m / s.

[0040] In one embodiment, the perforated part is formed as a plurality of holes (through holes) in the radial surface of the tubular member.

[0041] In one embodiment, the perforated part is formed as one or more grooves arranged in the radial surface of the tubular member.

[0042] In one embodiment, at least a part of the tubular member is formed as a tube.

[0043] In one embodiment, the distance D between the surrounding part and the tubular member is chosen depending on the type of intestine.

[0044] In one embodiment, the distance is in the range 20-50 mm if the intestine is from a pig. The word pig includes pigs and hogs. In one embodiment, the distance is in the range 10-40 mm if the intestine is from a sheep.

[0045] In one embodiment, the distance is in the range 25-70 mm if the intestine is from a cat. The term cow includes livestock.

[0046] The tubular member is narrow enough to be able to receive a minimum intestine having a diameter D min . The surrounding part can be shaped as a sensor ring.

[0047] The surrounding part is large enough to ensure that there is always air between the intestine and the surrounding part, even at the maximum intestine diameter D max expected by the handling device. Thus, the ring must always be at least larger than the diameter of the tubular member (D max -D min ).

[0048] Thus, the distance D between the surrounding part and the tubular member distance must satisfy the following equation (A):

[0049] (A) D > D max -D min

[0050] The detection means will also work if the distance D is large. The water jet is more likely to break up before reaching the surrounding part.

[0051] Advantageously, the surrounding part comprises a first part and a second part, wherein the first part and the second part are movably arranged relative to each other.

[0052] In an embodiment, the surrounding part comprises two identical parts.

[0053] In an embodiment, the two parts are semi-cylindrical. In an embodiment, the surrounding part comprises two parts that are electrically connected to each other.

[0054] In an embodiment, the surrounding part is a one-piece body.

[0055] In an embodiment, the one-piece body is cylindrical.

[0056] In an embodiment, the surrounding part extends along at least 180 degrees of the circumference of the tubular member.

[0057] It can be advantageous that the circuit is electrically connected to a first contact point that is electrically connected to the liquid (when the tubular member has filled the liquid into the intestine) and to a second contact point that is electrically insulated from the liquid.

[0058] It can be advantageous that the surrounding part is made of metal.

[0059] In an embodiment, the surrounding part is made of stainless steel.

[0060] It can be beneficial that the surrounding part extends along at least 355 degrees of the circumference of the tubular member.

[0061] In an embodiment, the surrounding part extends along 360 degrees of the circumference of the tubular member.

[0062] In an embodiment, the circuit is configured to detect when the electrical quantity between the surrounding part and the liquid of the pressurized intestinal tract is not within a predetermined interval (if a measured resistance is below a predetermined level or if a measured current is above a predetermined level) for a period of time that is longer than a predefined non-zero time. Thus, false alarms can be avoided. In an embodiment, the circuit is configured to detect when the electrical quantity between the surrounding part and the tubular member is not within a predetermined interval (if a measured resistance is below a predetermined level or if a measured current is above a predetermined level) for a period of time that is longer than a predefined non-zero time.

[0063] In an embodiment, the circuit is configured to detect when the electrical current between the surrounding part and the liquid of the pressurized intestinal tract is below a predetermined level (if a measured resistance, which is relevant) for a period of time that is longer than a predefined non-zero time.

[0064] In one embodiment, the circuit is configured to detect when the current between the surrounding portion and the tubular member is below a predetermined level (if the resistance is measured, this is relevant) for longer than a predetermined non-zero period of time.

[0065] In one embodiment, the circuit is configured to detect when the current between the surrounding portion and the tubular member is above a predetermined level (if the current is measured, this is relevant) for longer than a predetermined non-zero period of time.

[0066] In one embodiment, the circuit is configured to detect when the current between the surrounding portion and the liquid of the pressurized intestinal tract is above a predetermined level (if the current is measured, this is relevant) for longer than a predetermined non-zero period of time.

[0067] In one embodiment, the predetermined resistance level is 10 MΩ or less. Tests have shown that this resistance level is suitable to avoid false positives.

[0068] It can be advantageous to select the predefined time T' as a function of the length L and the speed V of the surrounding portion in the following way:

[0069] In one embodiment, the predetermined time T' is selected as a function of the length L and the speed V of the surrounding portion in such a way that:

[0070] In one embodiment, the predetermined time T' is selected as a function of the length L and the speed V of the surrounding portion in such a way that:

[0071] In one embodiment, the predetermined time T' is at least 3 ms.

[0072] In one embodiment, the predetermined time T' is at least 5 ms.

[0073] In one embodiment, the predetermined time T' is at least 8 ms.

[0074] In one embodiment, the predetermined time T' is at least 10 ms.

[0075] In one embodiment, the predetermined time T' is at least 25 ms.

[0076] In one embodiment, the predetermined time T' is at least 50 ms.

[0077] In one embodiment, the processing device comprises a chassis.

[0078] To prevent false electrical connections from liquid films from the surrounding part to the machine chassis, it can be advantageous to place an electrically conductive structure (e.g. a plate) between the chassis of the processing device and the surrounding part. The electrically conductive structure will be electrically isolated from the chassis and the surrounding part, and the circuit ensures that the voltage on the electrically conductive structure is always the same as the voltage on the surrounding part. Since any liquid film that can be located between the surrounding part and the chassis must cross the electrically conductive structure,

[0079] If an electrical current flows between the electrically conductive structures of the chassis, this current does not affect the electrical measurement between the surrounding part and the liquid in the intestine.

[0080] If a method for detecting a leak hole in an intestine hanging on a tubular member having a perforated part configured to distribute a flow of liquid through the perforated part and thereby pressurize the intestine is advantageous, the method, when the intestine moves with a non-zero speed along the longitudinal axis of the tubular member, is a method wherein the method comprises the steps of:

[0081] - arranging an electrically conductive and axially extending sleeve-shaped surrounding part in such a way that the surrounding part at least partly surrounds the circumference of the tubular member, and

[0082] - measuring an electrical quantity between the surrounding part and the liquid of the pressurized intestine.

[0083] Thus, a hole in an intestine hanging on a tubular member can be identified in a reliable and easy way.

[0084] In an embodiment, the tubular member is an electrically conductive tubular member.

[0085] If the tubular member is not electrically conductive, the electrical quantity between the surrounding part and the liquid of the pressurized intestine can be measured between the surrounding part and a contact structure (e.g. an anode) electrically connected to the liquid.

[0086] It can be advantageous that the method comprises the step of arranging the tubular member in such a way that the distance between the surrounding part and the tubular member is chosen according to the type of intestine, wherein the distance is:

[0087] a) in the range 20-50 millimeters if the intestine is from a pig;

[0088] b) in the range 10-40 millimeters if the intestine is from a sheep;

[0089] c) in the range 25-70 millimeters if the intestine is from a cow;

[0090] Thus, an optimal setting can be achieved.

[0091] Advantageously, the surrounding portion comprises a first portion and a second portion, wherein the first portion and the second portion are movably arranged with respect to each other. Thus, it can be made easy for the intestine to pass the insertion of the surrounding portion.

[0092] Advantageously, the method comprises the step of applying a surrounding portion formed as a one-piece body.

[0093] In one embodiment, the method comprises the step of applying a surrounding portion extending along at least 180 degrees of the circumference of the tubular member.

[0094] In one embodiment, the method comprises the step of applying a surrounding portion extending along at least 355 degrees of the circumference of the tubular member.

[0095] In one embodiment, the method comprises the step of applying a surrounding portion extending along at least 358 degrees of the circumference of the tubular member.

[0096] In one embodiment, the surrounding portion extends along 360 degrees of the circumference of the tubular member. Advantageously, the method comprises the step of applying an electric circuit configured to detect when the amount of electricity between the surrounding portion and the liquid is below a predetermined value level (if a resistance is measured, this is relevant) or above a predefined level (if a current is measured, this is relevant) for a period of time longer than a predefined non-zero time T'. Thus, it can be avoided that a false alarm occurs in case of an electric connection between the surrounding portion and the tubular member through water in the intestine for a short time without a hole in the intestine.

[0097] Advantageously, the method comprises the step of applying a resistance as the amount of electricity, wherein the predetermined resistance level is 10 MΩ or less.

[0098] Advantageously, the method comprises the step of applying a predetermined time T' selected in such a way that:

[0099] Advantageously, the method comprises the step of applying a predetermined time T' selected in such a way that:

[0100] Advantageously, the method comprises the step of applying a predetermined time T' selected in such a way that:

[0101] It can be beneficial to have a treatment device for treating an intestine having an open end, wherein the treatment device comprises:

[0102] - a tubular member having a perforated portion configured to distribute a liquid flow through the perforated portion, wherein the tubular member is configured to receive an open end of the intestine and to suspend the intestine on the tubular member and thereby exert a pressure on the intestinal tube.

[0103] - two drive rollers comprising a circumferential track configured to engage with the tubular member, wherein at least one of the drive rollers is arranged and configured to move the intestinal tract along the longitudinal axis of the tubular member at a non-zero speed;

[0104] - two pinch rollers arranged to form a pinch configuration, wherein the intestine is pinched by the pinch rollers, wherein the distal end of the tubular member is arranged between the drive rollers and the pinch rollers, wherein the processing device comprises a detection device according to the invention.

[0105] Thus, it is possible to provide a processing device that is capable of processing an intestinal tract and at the same time detecting a hole in the intestinal tract in a fast and reliable manner.

[0106] In one embodiment, the tubular member is electrically conductive.

[0107] It can be advantageous that the detection device is arranged between the drive rollers and the pinch rollers. BRIEF DESCRIPTION OF DRAWINGS

[0108] The present invention will become more fully understood from the detailed description given herein below. The only purpose of the accompanying drawings is to explain the invention by way of illustration. In the drawings:

[0109] Fig. 1 shows a schematic perspective cross-sectional view of a detection device according to the invention;

[0110] Fig. 2 shows a schematic cross-sectional side view of the detection device shown in Fig. 1 ;

[0111] Fig. 3 shows a schematic side view of a processing device according to the invention;

[0112] Fig. 4 is a side view schematic of another configuration of the processing device shown in Fig. 3;

[0113] Fig. 5 shows a plot of the resistance curve 30 as a function of time;

[0114] Fig. 6 shows a schematic view of a detection device according to the invention;

[0115] Fig. 7 shows a perspective view of a detection device according to the invention;

[0116] Fig. 8 shows a side view of a tubular member having a distal end arranged between a set of drive rollers and a set of pinch rollers (as the one shown in Fig. 7);

[0117] Fig. 9 shows an intestinal tract detector according to the invention;

[0118] Fig. 10 is a perspective side view of the intestinal detector shown in Fig. 9;

[0119] Fig. 11 shows an intestinal detector according to the present application;

[0120] Fig. 12 shows a perspective side view of the intestinal detector shown in Fig. 11. DETAILED DESCRIPTION

[0121] For illustrating the preferred embodiments of the present application, reference will now be made in detail to the accompanying drawings, in which a cross-sectional view of a detection device 2 according to the present application is illustrated in Fig. 1.

[0122] The detection device 2 comprises an electrically conductive and axially extending sleeve-shaped surrounding portion having a first portion 4 and a second portion 4'. Each portion 4, 4' is semi-circular and extends 180 degrees along the circumference of an electrically conductive tubular member 10. The tubular member 10 is formed as a tube centrally arranged in the surrounding portion and axially extending along the longitudinal axis of the surrounding portion.

[0123] The intestine 8 is suspended on the tubular member 10. The tubular member 10 has a perforated portion configured to distribute a liquid 6 flow through the perforated portion and thereby pressurize the intestine 8. The velocity V along the longitudinal axis of the tubular member 10 is zero.

[0124] The detection device 2 is used for detecting if a leak hole 12 is present in the intestinal tract 8. Since the intestinal tract 8 is pressurized, there is a water jet 6. The water jet 6 extends between the water inside the intestine 8. And the first portion 4 of the surrounding portion.

[0125] The water jet 6 establishes an electrical connection between the tubular member 10 and the first portion 4 of the surrounding portion. Thus, the electrical resistance is reduced compared to the case where the water inside the intestine 8 and the surrounding portion are separated only by the intestine 8 and the surrounding air.

[0126] The detection device 2 comprises an electrical circuit (not shown) arranged and configured to measure an electrical quantity such as the electrical resistance or the electrical current between the surrounding portion and the tubular member 10. Thus, the detection device can make a measurement when the electrical current or the electrical resistance is shifted between the surrounding portion and the tubular member 10 as shown in Fig. 2. When the shift occurs, the detection device detects that the intestinal tract 8 comprises a portion around the leak hole 12 through which the intestinal tract 8 passes.

[0127] The length L of the surrounding portion is denoted. Since the intestine 8 moves with a velocity V, the leak hole 12 will move with the same velocity V relative to the surrounding portion. Thus, the expected contact time t contact The expected contact time t can be calculated by using the following equation:

[0128] (1) T contact = L / V

[0129] To avoid false alarms, the circuit can be configured to detect when the amount of electricity between the surrounding part and the tubular member 10 is below a predetermined level (if the resistance is measured, this is relevant) or below a predetermined level (if the current is measured, this is relevant) for a duration longer than a predefined non-zero time. Thus, false positives can be avoided.

[0130] In one example, the speed V is 2 m / s and L is 10 cm. By using equation (1), it can be calculated that:

[0131] (2) T contact = L / V = (0.10 m) / (2 m / s) = 0.05 s = 50 ms.

[0132] Using these parameters, it can be defined that a leak hole 12 is detected when the reduced resistance is below 10 MΩ for a time period in the range of 10-50 milliseconds.

[0133] Fig. 2 illustrates a schematic cross-sectional side view of the detection device 2 shown in Fig. 1. The first part 4 and the second part 4' of the surrounding part of the detection device 2 have a semi-circular cross section. The tubular member 10 has a plurality of perforations 28. Water inside the tubular member 10 is pressurized. Thus, the water flows through the perforations 28 and pressurizes the intestine 8.

[0134] The water jet 6 extends between the leak hole 12 and the surrounding part. The distance D between the tubular member 10 and the surrounding part 10 is shown.

[0135] Fig. 3 shows a processing device 20 according to the present application in a first configuration, wherein Fig. 4 shows the processing device 20 shown in Fig. 3 in a second configuration. The processing device 20 is designed for processing an intestine 8 having an open end. The processing device 20 comprises an electrically conductive tubular member 10 having a perforated section configured to distribute a liquid flow (e.g. water) through the perforated section. The tubular member 10 is arranged and configured to receive the open end of the intestine 8 and thereby allow the intestine 8 to be suspended on the tubular member 10 and thereby pressurize the intestine 8 with the liquid.

[0136] The processing device 20 comprises two drive rollers 24. At least one of the drive rollers 24 comprises a circumferential track configured to engage with the tubular member 10.

[0137] At least one of the drive rollers 24 is arranged and configured to move the intestine 8 along the longitudinal axis of the tubular member 10 with a non-zero speed V.

[0138] In a preferred embodiment, the drive rollers 24 are shaped in the same way, such that both drive rollers 24 comprise a circumferential track configured to engage with the tubular member 10.

[0139] The treatment device 20 comprises two clamping rollers 26 which are arranged to enter a clamping configuration in which the intestine 8 is clamped by the clamping rollers 26.

[0140] The distal end of the tubular member 10 is arranged between the drive roller 24 and the clamping roller 26. The treatment device 20 comprises a detection device 2 according to the present application. The detection device 2 is arranged between the drive roller 24 and the clamping roller 26.

[0141] Each clamping roller 26 is partly covered by a screen 36. The screen 36 can preferably be made of a non-conductive material, such as a plastic material. The detection device 2 is configured to detect a leak hole in the intestine 8 hanging on the tubular member 10 when the intestine 8 is moved along the longitudinal axis of the tubular member 10 at a non-zero speed V. The detection device 2 comprises an electrically conductive and axially extending sleeve-shaped surrounding portion 4, 4' which is configured to form a configuration (as shown in Fig. 4) in which the surrounding portion surrounds the periphery 10 of the tubular member.

[0142] The detection device 2 comprises an electrical circuit 14 which is arranged and configured to measure an electrical quantity, such as a resistance or a current, established between the surrounding portion and the tubular member 10. As can be seen, the electrical circuit 14 is electrically connected to the tubular member 10 and the surrounding portion by wires 22, 22'. Furthermore, the tubular member 10 is fixed to a stand 16 which is electrically connected to an electrical ground G.

[0143] The lowermost drive roller 24 and the lowermost clamping roller 26 are slidably mounted on a slide bar 18 to facilitate adjustment of the horizontal position of the rollers 24, 26.

[0144] In Fig. 3, according to the present application, the intestine 8 is hanging on an intestine detector 38. The intestine detector 38 comprises a first end detector 40 and a second end detector 40' which is arranged at a non-zero distance from the first end detector. The intestine detector 38 comprises an intermediate detector 42 which is arranged between and spaced apart from each of the end detectors 40, 40' and which is electrically connected to any intestine hanging on and extending between the end detectors 40, 40'.

[0145] Each of the end detectors 40, 40' is shaped to receive and hold an intestine hanging on the end detector 40, 40'. The end detectors 40, 40' have the same geometry. The end detectors 40, 40' comprise a hook-shaped portion. However, the intermediate detector has a straight distal portion extending between the first end detector 40 and the second end detector 40'.

[0146] The end detector 40, 40' extends through a mounting box comprising electrical connection structures for connecting an electrical circuit configured to perform one or more electrical measurements through the detector 40, 40', 42.

[0147] The intestine 8 is received by and suspended from the tubular member 10. In addition, the intestine 8 is pressurized by water from the tubular member 10 and thus inflated. The intestine 8 is clamped between the clamping rollers 26 at a first location of the intestine 8 and is clamped by the drive roller 24 at another location of the intestine 8.

[0148] Fig. 5 shows a graph 30 depicting the resistance R as a function of time T. Between 0 and T1, the resistance R has a relatively constant level R3. Between T1 and T2, the resistance R drops to a lower, relatively constant level R1. The duration of this period is indicated by AT. Thereafter, the resistance R increases to the relatively constant level R3.

[0149] To avoid false alarms, the detection device comprises a circuit configured to detect when the resistance R between the surrounding part and the tubular member is below a predetermined level R2 for longer than a predetermined non-zero period of time T'. T' and R2 are shown in the figure. Since the period AT is larger than the predefined non-zero time T', the measurement is not considered a false alarm. In one embodiment, R2 is 10 MΩ.

[0150] Fig. 6 shows a schematic view of a detection device 2 according to the invention. The detection device 2 comprises a surrounding part comprising a first part 4 and a second part 4'. The first part 4 and the second part 4' comprise a semi-cylindrical part. The surrounding part surrounds a tubular member 10 which extends centrally along a longitudinal axis of the surrounding part. The tubular member 10 is grounded. The intestine 8 is suspended from the tubular member 10.

[0151] The first part 4 is connected to an insulating structure 32 which is clamped between a protruding part of the first part 4 and a conductive structure 34. The conductive structure 34 is grounded and attached to a non-conductive shield 36.

[0152] A predefined electrical potential U is provided at the surrounding part. If a water film establishes an electrical connection between the first part 4 and the conductive structure 34, the potential difference U between the first part 4 and the conductive structure 34 will be zero. However, if there is no water on the insulating structure 32, there will be a non-zero potential difference U between the first part 4 and the conductive structure 34. i i .

[0153] By measuring the potential difference between the first part 4 and the conductive structure 34, it can be detected whether the surrounding part is electrically insulated from the conductive structure 34. The conductive structure 34 can be a metal plate.

[0154] ​If the surrounding portion is electrically insulated from the electrically conductive structure 34, the measurement of the potential difference (or current or resistance) between the first portion 4 and the tubular member 10 can be used to detect whether a leak hole is present in the first portion 4. The water pressurized intestine 8 is suspended on the tubular member 10.

[0155] Fig. 7 shows a perspective view of a detection device according to the present application. The detection device 2 comprises a surrounding portion comprising a first portion 4 and a second portion 4' made of metal, for example stainless steel. The parts 4, 4' are movable relative to each other. The first portion 4 comprises a semi-cylindrical portion attached to a screen 36 made of a non-conductive material, for example plastic. The first portion 4 comprises a mounting plate attached to the screen 36 by screws.

[0156] Each of the two screens 36 surrounds a portion of a rotatably mounted pinch roller 26. The pinch rollers are arranged and configured to form a configuration in which they press against and thereby pinch the intestine such that the intestine can be pressurized with a liquid, for example water. The lower screen 36 is slidably mounted on a horizontally extending slide bar 18. In the configuration shown in Fig. 7, the intestine can enter through the surrounding portion since the first portion 4 is vertically spaced apart from the second portion 4'. However, the first portion 4 is mounted in such a way that it can be moved vertically and thereby come into contact with the second portion 4' such that the first portion 4 and the second portion 4' are in electrical contact.

[0157] Fig. 8 shows a side view of a tubular member 10 having a distal end arranged between a set of drive rollers 24 and a set of pinch rollers, like the one shown in Fig. 7. Each drive roller 24 is partially surrounded by a screen. The screen of the lower drive roller 24 is slidably provided on a slide bar 18.

[0158] Each drive roller 24 comprises a circumferential track configured to engage with the tubular member 10. The track is shaped to receive half of the tubular member 10 such that the non-track portions of the drive rollers 24 will abut against each other when the track is in contact with the tubular member 10. The track is provided with grooves for enhanced grip.

[0159] Fig. 9 shows an intestinal detector 38 according to the present application. The intestinal detector 38 comprises a first end detector 40 and a second end detector 40' arranged at a non-zero distance from the first end detector. The intestinal detector 38 comprises an intermediate detector 42 arranged between and spaced apart from each of the end detectors 40, 40', the intermediate detector 42 will electrically connect to any intestine suspended on the end detectors 40, 40' and extend between the first end detector 40 and the second end detector 40'.

[0160] Each of the end detectors 40, 40' is shaped to receive and hold an intestine hanging over the end detector 40, 40'. The end detectors 40, 40' have the same geometry. The end detectors 40, 40' comprise a hook-shaped portion. However, the middle detector has a straight distal portion extending between the first end detector 40 and the second end detector 40'.

[0161] The end detectors 40, 40' extend through a mounting box comprising electrical connection structures for connecting an electrical circuit configured to perform one or more electrical measurements through the detectors 40, 40', 42.

[0162] Figure 10 illustrates a perspective side view of the intestinal tract detector 38 shown in figure 9. It can be seen that the intestinal tract detector 38 comprises two receiving portions of identical shape, each receiving portion comprising a set of detectors 40, 40' and the middle detector 42 arranged therebetween. Furthermore, it can be seen that the intestinal tract detector 38 is electrically insulated from a wall 46 to which the intestinal tract detector 38 is attached by an insulator 44.

[0163] Figure 11 illustrates an intestinal tract detector 38 according to the present application. The intestinal tract detector 38 substantially corresponds to the detector shown in figure 9. However, the intestinal tract detector 38 does not comprise a second end detector 40'. The intestinal tract detector 38 comprises a middle detector 42 arranged spaced apart from and extending parallel to the first end detector 40, the middle detector 42 being to electrically connect to any intestinal tract hanging over the first end detector 40.

[0164] The first end detector 40 is shaped to receive and hold an intestine hanging over the first end detector 40. The first end detector 40 comprises a hook-shaped portion.

[0165] The first end detector 40 extends through a mounting box comprising electrical connection structures for connecting an electrical circuit configured to perform one or more electrical measurements through the detectors 40, 42.

[0166] Figure 12 illustrates a perspective side view of the intestinal tract detector 38 shown in figure 11. It can be seen that the intestinal tract detector 38 comprises one receiving portion, the receiving portion comprising one first end detector 40 and one middle detector 42 arranged at the first detector 40. Furthermore, it can be seen that the intestinal detector 38 is electrically insulated from a wall 46 to which the intestinal detector 38 is attached by an insulator 44.

[0167] List of reference numerals

[0168] 2 detection device

[0169] 4, 4' portion

[0170] 6 liquid

[0171] 8 intestine

[0172] 10 tubular member

[0173] 12 leak hole

[0174] 14 circuit

[0175] 16 stent

[0176] 18 rod

[0177] 20 processing device

[0178] 22, 22' wire

[0179] 24 drum

[0180] 26 drum

[0181] 28 perforation

[0182] 30 chart

[0183] 32 insulating structure

[0184] 34 conductive structure

[0185] 36 non-conductive screen

[0186] 38 enteroscope

[0187] 40, 40' end detector

[0188] 42 intermediate detector

[0189] 44 insulator

[0190] 46 wall

[0191] R, R1 resistance

[0192] R2, R3 resistance

[0193] T, T', ΔT time

[0194] T1, T2 time

[0195] D distance

[0196] V speed

[0197] L length

[0198] G electrical ground

[0199] U, U1, U2 voltage

Claims

1. An intestinal detector, characterized in that The intestinal detector (38) is comprised in a detection device configured to be suspended to the intestine of the tubular member; The tubular member provides an electrically conductive and axially extending surrounding portion that surrounds part of the tubular member periphery, the distance D between the surrounding portion and the tubular member being selected according to the type of intestine; The intestinal detector (38) comprises a first end detector (40) provided with a hook-shaped portion, the intestinal detector (38) comprising an intermediate detector (42) and end detectors that can receive and hold an intestine suspended thereon, the intermediate detector (42) being arranged at a distance from the first end detector (40) in such a configuration that it electrically connects to any intestinal tract (8) suspended to the first end detector (40), the intestine moving at a speed of 0.5-3 m / s.

2. The bowel detector of claim 1, wherein The intestinal detector (38) comprises a second end detector (40') arranged at a non-zero distance from the first end detector (40), wherein the intermediate detector (42) is arranged between and spaced apart from the first end detector (40) and the second end detector (40'), the intermediate detector (42) electrically connecting to any intestinal tract (8) suspended to both end detectors (40, 40') and extending between the first end detector (40) and the second end detector (40').

3. The bowel detector according to claim 1 or 2, characterized in that The intestinal detector (38) comprises a circuit (14) configured to detect any end detector (40, 40') and the intermediate detector (42).

4. The bowel detector of claim 1, wherein, The intestinal detector (38) comprises a circuit (14) configured to detect the current between any end detector and the intermediate detector (42).

5. The bowel detector of claim 1, wherein, The intestinal detector (38) comprises a circuit (14) configured to detect any end detector (40, 40') and the intermediate detector (42).

6. The bowel detector of claim 1, wherein, Each of the intestinal tracts (8) of the end detectors (40, 40') is shaped to receive and hold an intestine suspended in the end detector configuration.

7. The bowel detector of claim 1, wherein, The intestinal detector (38) comprises two end detectors (40, 40') having the same geometry.

8. The bowel detector of claim 1, wherein, The end detectors (40, 40') comprise a hook-shaped portion.

9. The bowel detector of claim 1, wherein, The intestinal detector (38) comprises two end detectors (40, 40'), the intermediate detector (42) having a straight distal portion arranged next to the first end detector (40) and extending between the first end detector (40) and the second end detector (40').

10. The bowel detector of claim 1, wherein, The end detectors (40, 40') and the intermediate detector (42) are made of metal.

11. The bowel detector of claim 1, wherein, The end detectors (40, 40') extend through a mounting box comprising electrical connection structures for connecting a circuit (14) configured to perform one of the following operations by the detector to make further electrical measurements.

12. The bowel detector of claim 1, wherein, The intestinal detector (38) comprises two receiving portions of the same shape, each receiving portion comprising a set of detectors and an intermediate detector (42) arranged between them.

13. The bowel detector of claim 1, wherein, The enteroscope (38) is electrically insulated from the wall of the enteroscope (38) by an insulator (44).

14. The bowel detector of claim 1, wherein, The enteroscope (38) comprises a circuit (14) identical to the circuit (14) of the detection device (2).

15. A detection device comprising an enteroscope (38) according to claim 1.

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