JP2005334472A - Medical system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a medical system, even when a medical appliance is combinedly used with an endoscope, allowing a user to grasp the relation of the relative position of each medical appliance, the position of the medical appliance in the body cavity, and the insertion shape of the medical appliance, having superior operability and reducing the fatigue of an operator and the burden on a patient. <P>SOLUTION: This medical system constituted of at least two medical appliances to be inserted in the body cavity is provided with first and second coils 14 and 18, as coils to be detected, disposed in portions to be inserted into the body cavity of the insertion tube 2 of the endoscope 1 and an over tube 11 as the medical appliances, a coil unit 32 installed outside the medical appliance and detecting magnetic signals of the first and second coils 14 and 18, a computing means computing the relation of the relative position between the first/second coils 14 and 18 and the coil unit 32, and a monitor 33 as a display means displaying the shape image of the endoscope 1 inserted into the body cavity based on the computing result of the computing means. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a medical system for observing the inside of a body cavity by orally or transanally inserting the body cavity.

  As a technique for inserting a medical endoscope into a deep digestive tract cavity in a body cavity, for example, a small intestine, there are a case where the medical endoscope is inserted orally and a case where it is inserted transanally. In any case, because the intestinal tract is complicatedly bent, even if the insertion section of the endoscope is pushed outside the body cavity, it is difficult for the force to be transmitted to the distal end of the insertion section, and it is difficult to insert it deeply. is there.

  Therefore, an endoscope balloon is provided at the distal end of the endoscope so that the insertion section of the endoscope can be smoothly inserted into the complicated intestinal tract, and an overtube ( There is known a double balloon type endoscope system in which an overtube balloon is provided at a distal end of a sliding tube (for example, see Patent Document 1).

  This means that after inserting the overtube serving as a guide when inserting the endoscope insertion part deep into the intestinal tract, inflating the balloon for the overtube and fixing the balloon for the overtube to the intestinal tract, By retracting the overtube in this state, the intestinal tract is bent and the endoscope insertion portion is inserted deeper.

  In addition, when inflating the balloon for the overtube and fixing the overtube to the intestinal tract, the material of the balloon is made to be soft such as latex, and the internal pressure of the balloon is measured so as not to put a burden on the intestinal tract etc. There is also known a device that can control the pressure by controlling the pressure (for example, see Patent Documents 2 and 3).

  Furthermore, in the process of inserting the insertion portion of the endoscope into the intricately bent intestinal tract, an operation of bending the bending portion of the insertion portion in accordance with the bending of the intestine and directing the distal end component to the deep part of the intestinal tract is performed. It is known to be able to detect the position of the distal end component of the part in the intestinal tract and the shape of the insertion part in the insertion part (for example, see Patent Documents 4, 5, and 6). .

This includes a coil unit having a plurality of source coils arranged in a longitudinal direction of an insertion portion of an endoscope and having a sense coil outside the body for magnetically detecting the position of the source coil. The information (shape image) detected on the monitor is displayed on the monitor.
JP-A-11-290263 JP 2001-340462 A JP 2002-301019 A JP 2000-79088 A JP 2000-93386 A JP 2001-46319 A

  However, in Patent Documents 1 to 3, the balloon for the endoscope is fixed to the distal end of the insertion section of the endoscope, and the distal end of the overtube (sliding tube) inserted outside the insertion section of the endoscope. In this structure, the balloon for the overtube is fixed. Therefore, if the overtube is pushed too far along the insertion section toward the distal end, the endoscope balloon may be damaged at the distal end of the overtube.

  In addition, Patent Documents 4 to 6 allow detection of the position of the distal end component of the insertion section of the endoscope in the intestinal tract and the insertion shape of the insertion section. Alternatively, when a medical device such as a guidewire is used in combination with an endoscope, it is not possible to detect the position of the medical device in the intestinal tract or the shape of the inserted medical device. In such a case, the examination is generally performed under X-ray fluoroscopy in many cases. However, it is difficult to distinguish between the endoscope and the overtube. It is necessary to attach a protector, which is complicated.

  The present invention has been made in view of the above circumstances, and the purpose thereof is, for example, when using a medical instrument such as an overtube, a probe or a guide wire in combination with an endoscope, etc. Provide a medical system that can grasp the relative positional relationship of each medical device, the position of the medical device in the body cavity, and the insertion shape of the medical device, is excellent in operability, and reduces the fatigue of the operator and the burden on the patient. Is to do.

  To achieve the above object, according to the present invention, in a medical system including at least two medical devices inserted into a body cavity, the medical system is disposed at a portion of each medical device inserted into the body cavity. A detected coil, a detection coil installed outside the medical device and detecting a magnetic signal of the detected coil, and a calculation unit configured to calculate a relative positional relationship between the detected coil and the detection coil. And display means for displaying a shape image of the medical instrument inserted into a body cavity based on a calculation result of the calculation means.

  A second aspect of the present invention is characterized in that the medical device of the first aspect is an endoscope and an overtube that is externally inserted into an insertion portion of the endoscope.

  A third aspect of the present invention is characterized in that the medical instrument of the first aspect is an endoscope and a probe inserted into a treatment channel of the endoscope.

  A fourth aspect of the present invention is characterized in that the medical instrument of the first aspect is an endoscope and a guide wire inserted into a treatment channel of the endoscope.

  According to a fifth aspect of the present invention, a part to be inserted into the body cavity of the one medical device according to the first aspect is provided with a plurality of coils to be detected over the insertion shaft, and inserted into the body cavity of the other medical device. In the part to be detected, the coil to be detected is provided only at the distal end.

  A sixth aspect of the present invention is characterized in that an inflatable and deflated balloon is provided at a distal end of a portion of the medical device of the first aspect to be inserted into a body cavity.

  According to a seventh aspect of the present invention, the balloon according to the sixth aspect is detachable at a distal end of a medical device and has an air supply line for supplying air to the balloon, and a plurality of the air supply lines extend along an insertion axis of the air supply line. Is provided.

  An eighth aspect of the present invention is characterized in that the coil to be detected according to the sixth or seventh aspect is provided near a balloon.

  According to a ninth aspect, in the display means for displaying the shape image of the medical device of the first aspect, the image of each medical device is displayed so as to be identifiable.

  According to a tenth aspect of the present invention, a coil to be detected is provided near a balloon provided at a distal end of each of the medical devices according to any one of the sixth to eighth aspects, and an alarm is generated when both coils approach. Means are provided.

  An eleventh aspect is characterized in that the display means for displaying the shape image of the medical instrument according to any one of the sixth to ninth aspects displays a positional relationship of a balloon provided on each of the medical instruments.

  According to the configuration, the position of the coil to be detected of each medical device is detected by the detection coil provided outside the body cavity, and the shape of each medical device inserted into the body cavity is displayed by calculating by the calculating means. The medical device can be displayed on the display unit, and the relative position and the insertion shape of each medical device can be understood, so that each medical device can be operated while monitoring the image on the display unit.

  ADVANTAGE OF THE INVENTION According to this invention, the relative positional relationship of each medical instrument inserted in the body cavity, which position of the medical instrument is located in the body cavity, and the insertion shape of the medical instrument can be grasped. This has the effect of reducing fatigue and the burden on the patient.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 4 show a first embodiment, FIG. 1 is an overall configuration diagram of a medical system, FIG. 2 is a longitudinal side view of a distal end portion of a double balloon type endoscope, and FIGS. 3 and 4 are displayed on a monitor. FIG.

  FIGS. 1 and 2 show an endoscope 1 for a small intestine as a medical device. The endoscope 1 has an elongated flexible insertion portion 2, and a distal end (distal end side) of the insertion portion 2. Is provided with a distal end component 4 via a curved portion 3. An operating portion 6 having a grip portion 5 is provided at a proximal end (proximal end side) of the insertion portion 2, and a universal cord 8 having a connector 7 at a distal end is connected to the operating portion 6. .

  The insertion channel 2 has a treatment channel, the distal end component 4 has an observation optical system such as an illumination optical system and a solid-state imaging device, a forceps port communicating with the treatment channel, and a nozzle for supplying air into the body cavity and water to the observation lens. (Both not shown) are provided, and the treatment channel communicates with the treatment instrument insertion port 9 of the operation unit 6. The operation section 6 is provided with an angle operation knob 10 for performing a bending operation on the bending section 3, and the bending section 3 can be bent by pushing and pulling an angle wire (not shown).

  The insertion section 2 is provided with an endoscope overtube 11 as a medical instrument externally inserted into the insertion section 2 so as to be able to advance and retreat in the insertion axis direction. An endoscope balloon 12 that can be expanded and contracted is attached to the distal end component 4 of the insertion section 2, and a distal end (distal end side) of the endoscope overtube 11 is for an inflatable and contractible overtube. A balloon 13 is mounted.

  Inside the insertion section 2 of the endoscope 1, a plurality of first coils 14 are arranged at intervals along the insertion axis direction of the insertion section 2 as coils to be detected. The coil 14 is arranged on the bending portion 3 close to the distal end component 4. The first coil 14 is connected to the connector 7 via a lead wire 14a.

  Further, a first air supply line 15 is inserted into the insertion portion 2 of the endoscope 1 along the insertion axis direction, and a distal end of the first air supply line 15 is a distal end portion. 4 communicates with the lumen of the endoscope balloon 12 through an opening 16 penetrating in the radial direction. In this manner, the opening 16 communicating with the first air supply line 15 is provided at the distal end of the first coil 14 at the front end so as not to overlap the first coil 14 in the axial direction. The diameter of the portion 2 can be reduced. Further, the proximal end of the first air supply line 15 extends to the connector 7 of the universal cord 8 via the operation unit 6.

  Both ends of the overtube balloon 13 of the endoscope overtube 11 are fixed to the endoscope overtube 11 by binding yarns 17a and 17b. Further, a single second coil 18 is fixed as a coil to be detected outside the binding thread 17a on the distal end side of the overtube balloon 13. The overtube balloon 13 may be fixed by a second coil 18 made of a metal wire instead of the binding thread 17a.

  Further, a second air supply duct 19 for supplying air to the overtube balloon 13 is provided on a part of the outer peripheral surface of the endoscope overtube 11. The second air supply line 19 extends to a grip portion 20 provided at a proximal end of the endoscope overtube 11. The second coil 18 is connected to a grip 20 provided at a proximal end of the endoscope overtube 11 via a lead wire (not shown).

  The connector 7 is provided with an air supply connection port 21 communicating with the first air supply line 15. This air supply connection port 21 is connected to a balloon control device 23 via a first connection tube 22. Further, an air supply connection port 24 communicating with the second air supply conduit 19 is provided in the grip portion 20 of the endoscope overtube 11. This air supply connection port 24 is connected to the balloon control device 23 via the second connection tube 25. A remote controller 26 is connected to the balloon control device 23 to control the balloon control device 23 so that the endoscope balloon 12 and the overtube balloon 13 can be inflated and deflated.

  The connector 7 is provided with a connection terminal 27 electrically connected to the first coil 14. The connection terminal 27 is connected to a control unit 29 via a first connection cord 28. In addition, a connection terminal 30 that is electrically connected to the second coil 18 is provided on the holding portion 20 of the endoscope overtube 11. The connection terminal 30 is connected to the control unit 29 via the second connection cord 31. The control unit 29 is connected to a receiving coil unit 32 containing a plurality of detection coils (not shown) and a monitor 33 as a display unit.

  The receiving coil unit 32 is installed outside the body cavity of the subject, and magnetically detects the positions of the first and second coils 14 and 18 arranged in the insertion section 2 inserted into the body cavity. I have. The detection signal of the reception coil unit 32 is used to calculate the relative positional relationship between the first and second coils 14 and 18 and the detection coil of the reception coil unit 32 by the calculation means built in the control unit 29, and this calculation result is obtained. On the monitor 33, the shape image of the insertion section 2 of the endoscope 1 and the overtube 11 inserted into the body cavity and the positions of the endoscope balloon 12 and the overtube balloon 13 are displayed on the monitor 33. .

  The connector 7 is connected to a video processor 34 so that an observation image of the endoscope 1 is displayed on a video monitor 35.

  Next, the operation of the medical system configured as described above will be described.

  When the double balloon type endoscope 1 is orally inserted into the small intestine to observe the inner wall of the intestinal tract, first, the overtube 11 is extrapolated into the insertion section 2 of the endoscope 1 and balloon control is performed by operating the remote controller 26. By controlling the device 23, the air of the balloon 12 for the endoscope and the balloon 13 for the overtube is evacuated to a contracted state.

  Next, the insertion section 2 of the endoscope 1 is inserted from the mouth b of the patient a, and the bending section 3 is operated to bend by operating the angle operation knob 10 of the operation section 6. And then into the small intestine. Then, when the distal end component 4 of the insertion section 2 of the endoscope 1 has passed through, for example, the duodenum, the remote controller 26 is operated to control the balloon control device 23.

  Then, air is supplied from the balloon control device 23 to the endoscope balloon 12 from the opening 16 through the first connection tube 22 and the first air supply conduit 15 to inflate the endoscope balloon 12. The endoscope balloon 12 is pressed against the inner wall of the small intestine, and the distal end component 4 of the endoscope 1 is fixed to the small intestine. In this state, when the grasping section 20 of the overtube 11 is grasped and the overtube 11 is advanced along the insertion section 2, the distal end of the overtube 11 is guided to the rear end of the endoscope balloon 12. .

  Next, when the remote controller 26 is operated again to supply air from the balloon control device 23 to the second connection tube 25, air is supplied to the over-tube balloon 13 via the second air supply conduit 19. Therefore, the balloon 13 for the overtube is inflated and pressed against the inner wall of the small intestine, and the distal end of the overtube 11 is fixed. In this state, when the grasping portion 20 of the overtube 11 is grasped and the overtube 11 is retracted to the hand side integrally with the insertion portion 2 of the endoscope 1, the pulling force of the overtube 11 together with the overtube 11 causes Since the radius of curvature is large and substantially straight, the small intestine can be shortened by taking extra bending of the small intestine.

  Next, the air of the balloon 12 for the endoscope is evacuated to a contracted state, and the insertion section 2 of the endoscope 1 is pushed toward the deep part of the small intestine. It is inserted deeply.

  In the process of inserting the insertion portion 2 of the endoscope 1 into the small intestine, the control unit 29 controls the plurality of first coils 14 built in the insertion portion 2 and the second coils provided in the overtube 11. An AC signal is applied to the coil 18 simultaneously or sequentially to generate a magnetic field around the coil. At the same time, the control unit 29 detects the magnetic field of the first and second coils 14 and 18 by the detection coil of the reception coil unit 32 disposed outside the body cavity, and uses the digital value of the detected magnetic field detection current to perform the detection. The positions of the first and second coils 14 and 18 are calculated.

  By calculating the positions of the first and second coils 14 and 18 and calculating them by the calculating means of the control unit 29, the relative position of the distal end component 4 of the insertion section 2 and the distal end of the overtube 11 and the insertion section The insertion shape of No. 2 and the relative positions of the balloon 12 for the endoscope and the balloon 13 for the overtube can be understood. The information is subjected to image processing by the control unit 29 and displayed on the monitor 33 as shown in FIGS. That is, as shown in FIG. 4, the relative position between the distal end portion 4 of the insertion portion 2 and the distal end of the overtube 11 (specific numerical values of the amount of protrusion of the distal end portion 4 from the distal end of the overtube 11) The image of the insertion shape of the insertion section 2 is displayed.

  Also, as shown in FIG. 4, when the endoscope balloon 12 and the overtube balloon 13 are close to each other due to the relative positional relationship between them, the balloon is displayed on the monitor 33 as character information or a warning sound is generated. be able to. Therefore, the surgeon operates the operation unit 6 of the endoscope 1 while monitoring the monitor 33 or operates the gripping unit 20 of the overtube 11 so that the overtube 11 moves the balloon 12 for the endoscope forward. It is possible to prevent the endoscope balloon 12 from being pushed or pierced and damaged. The observation image of the endoscope 1 when the insertion section 2 of the endoscope 1 is inserted into the small intestine is displayed on a video monitor 35 via a video processor 34.

  Although the technique of orally inserting the double balloon type endoscope into the small intestine has been described, the same applies to the case where the double balloon type endoscope is transanally inserted into the small intestine via the large intestine.

  In the above-described embodiment, the plurality of first coils 14 are provided in the insertion section 2 of the endoscope 1 and the single second coil 18 is provided in the distal end portion of the overtube 11. A single coil for an extracorporeal marker (shown by a broken line in FIG. 1) used in an endoscope shape observation device is provided with a second coil 18 provided on a medical instrument such as an overtube 11 inserted into a body cavity. You may make it possible to respond.

  FIG. 5 shows the second embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted. FIG. 5 shows a probe 41 as a medical instrument inserted through a treatment channel communicating with the treatment instrument insertion port 9 of the endoscope 1. A probe balloon 42 which can be expanded and contracted is provided at a distal end of the probe 41. A grip 43 is provided at the proximal end.

  An air supply line (not shown) is provided in the axial direction of the probe 41, and a distal end of the air supply line communicates with the probe balloon 42, and a proximal end of the air supply line provided on the grip portion 43. It communicates with the mouth 44. Further, a second coil 18 as a coil to be detected is provided at a distal end of the probe 41. The second coil 18 is connected to a connection terminal 45 provided on the holding portion 43 via a lead wire (not shown).

  Therefore, by inserting the probe 41 from the treatment instrument insertion port 9 of the endoscope 1 into the treatment channel of the insertion section 2, the probe balloon 42 and the second coil 18 are projected from the forceps port of the distal end component 4. be able to. Then, similarly to the first embodiment, the positions of the first and second coils 14 and 18 are calculated and calculated by the calculating means of the control unit 29, whereby the distal end component 4 of the insertion section 2 and the probe 41 are calculated. The relative position of the distal end and the insertion shape of the insertion section 2, and the relative positions of the balloon 12 for the endoscope and the balloon 42 for the probe are understood. Then, the information is subjected to image processing and displayed on the monitor 33.

  FIG. 6 shows a third embodiment, and the same components as those of the second embodiment are denoted by the same reference numerals and description thereof is omitted. FIG. 6 shows a guide wire 46 as a medical instrument inserted into a treatment channel communicating with the treatment instrument insertion port 9 of the endoscope 1. A distal end of the guide wire 46 has an inflatable and contractible guide wire. A balloon 47 is provided, and a grip 43 is provided at the proximal end.

  An air supply line (not shown) is provided in the axial direction of the guide wire 46, and a distal end of the air supply line communicates with the guide wire balloon 47, and a proximal end of the air supply line is provided on the grip 43. It communicates with the air connection port 44. Further, a second coil 18 as a coil to be detected is provided at a distal end of the guide wire 46. The second coil 18 is connected to a connection terminal 45 provided on the holding portion 43 via a lead wire (not shown).

  Therefore, by inserting the guide wire 46 from the treatment instrument insertion port 9 of the endoscope 1 into the treatment channel of the insertion section 2, the guide wire balloon 47 and the second coil 18 are moved from the forceps port of the distal end component section 4. Can protrude. Then, similarly to the first embodiment, the positions of the first and second coils 14 and 18 are calculated, and are calculated by the calculating means of the control unit 29. The relative position of the distal end of 46 and the insertion shape of the insertion portion 2, and the relative positions of the endoscope balloon 12 and the guide wire balloon 47 are understood. Then, the information is subjected to image processing and displayed on the monitor 33.

  FIG. 7 shows a fourth embodiment, in which the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted. FIG. 7 shows a balloon unit 48 as an external type medical instrument detachable from the endoscope 1. The balloon unit 48 is provided with a flexible rod 49 and a distal end of the rod 49. It comprises a mounting ring 50 a having an inflatable and deflated balloon 50, and a grip 51 provided at the proximal end of the rod 49.

  An air supply line (not shown) is provided in the axial direction of the rod 49, and a distal end of the air supply line communicates with the balloon 50, and a proximal end thereof has an air supply connection port 44 provided in the grip portion 51. Is in communication with Further, a plurality of first coils 14 are provided as coils to be detected over the entire length of the rod 49. The first coil 14 is connected to a connection terminal 45 provided on the holding portion 51 via a lead wire (not shown).

  Therefore, by mounting the mounting ring 50 a having the balloon 50 to the distal end component 4 of the endoscope 1, the rod 49 is disposed along the space between the insertion section 2 of the endoscope 1 and the overtube 11. Can be. Then, similarly to the first embodiment, the positions of the first and second coils 14 and 18 are calculated and calculated by the calculating means of the control unit 29, so that the positions of the rods 49 and the distal end of the balloon unit 48 are changed. The relative position of the distal end of the overtube 11 and the insertion shape of the insertion section 2, and the relative positions of the balloon 50 and the overtube balloon 13 are understood. Then, the information is subjected to image processing and displayed on the monitor 33.

  8A and 8B show a disclosure example, in which FIG. 8A is a longitudinal side view of a distal end of the insertion portion 2 of the endoscope 1, FIG. 8B is a diagram showing a microcoil, and FIG. 8C is a graph. An inflatable and deflated balloon 53 is provided at the distal end of the insertion section 2 of the endoscope 1 so as to cover the outer peripheral portion of the distal end section 4. A transmitting coil 54 composed of a micro coil is provided on a part of the outer peripheral portion of the distal end component 4 of the endoscope 1, and a receiving coil 55 composed of the micro coil is provided on the inner surface of the balloon 53 facing the transmitting coil 54. Have been.

  The distance between the transmitting coil 54 and the receiving coil 55 is proportional to the strength of the magnetic field, and the inflation state and the deflation state of the balloon 53 can be detected by the strength of the magnetic field, and the detection information is displayed on a monitor or the like. be able to.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying constituent elements in an implementation stage without departing from the scope of the invention. In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments. For example, some components may be deleted from all the components shown in the embodiment. Further, components of different embodiments may be appropriately combined.

1 is an overall configuration diagram of a medical system according to a first embodiment of the present invention. The longitudinal section side view of the tip part of the endoscope of the embodiment. The figure of the image displayed on the monitor which shows the embodiment. The figure of the image displayed on the monitor which shows the embodiment. FIG. 6 shows a second embodiment of the present invention, and is a side view of an endoscope and a probe. FIG. 9 shows a third embodiment of the present invention, and is a side view of an endoscope and a guide wire. FIG. 9 shows a fourth embodiment of the present invention, and is a side view of an endoscope, an external balloon unit and an overtube. The example of a disclosure is shown, (a) is the longitudinal side view of the distal end of the insertion part of an endoscope, (b) is a figure which shows a micro coil, (c) is a graph.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 ... Endoscope, 2 ... Insertion part, 3 ... Bending part, 4 ... Tip component part, 11 ... Overtube, 12 ... Endoscope balloon, 13 ... Overtube balloon, 14 ... First coil, 18 ... second coil, 29 ... control unit, 32 ... receiving coil unit, 33 ... monitor

Claims (11)

A medical system comprising at least two medical devices inserted into a body cavity,
A coil to be detected arranged at a site to be inserted into a body cavity of each medical device,
A detection coil that is installed outside the medical device and detects a magnetic signal of the detected coil,
Calculating means for calculating a relative positional relationship between the detected coil and the detection coil;
Display means for displaying a shape image of the medical instrument inserted into a body cavity based on the calculation result of the calculation means,
A medical system comprising:   The medical system according to claim 1, wherein the medical device is an endoscope and an overtube inserted outside the insertion section of the endoscope.   The medical system according to claim 1, wherein the medical device is an endoscope and a probe inserted into a treatment channel of the endoscope.   The medical system according to claim 1, wherein the medical device is an endoscope and a guide wire inserted into a treatment channel of the endoscope.   A part to be inserted into the body cavity of the one medical instrument is provided with a plurality of coils to be detected along the insertion axis, and a part to be inserted into the body cavity of the other medical instrument has a distal end. 2. The medical system according to claim 1, wherein only the coil to be detected is provided.   2. The medical system according to claim 1, wherein an inflatable and deflated balloon is provided at a distal end of a portion of each of the medical devices to be inserted into a body cavity.   The balloon is attachable to and detachable from a distal end of a medical device, has an air supply line for supplying air to the balloon, and is provided with a plurality of coils to be detected over an insertion axis of the air supply line. 7. The medical system according to claim 6, wherein:   The medical system according to claim 6, wherein the detection target coil is provided near a balloon.   The medical system according to claim 1, wherein the display unit that displays the shape image of the medical device displays the image of each medical device in an identifiable manner.   9. The apparatus according to claim 6, further comprising a coil to be detected in the vicinity of a balloon provided at a distal end of each of the medical instruments, and an alarm unit for generating an alarm when both coils approach. The medical system according to any one of the above.   The medical system according to any one of claims 6 to 9, wherein the display unit that displays the shape image of the medical device displays a positional relationship of a balloon provided on each of the medical devices.

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