JP2006158760A - Medical insertion training apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a medical insertion training apparatus that improves efficiency of training for inserting a medical insertion member. <P>SOLUTION: The medical insertion training apparatus comprises a large intestine model (tubular model) 10 and the insertion part 22 (medical insertion member) of an endoscope inserted in the large intestine model 10, wherein IC tags 15 are set at a plurality of positions outside the tubular wall of the large intestine model 10, and elastic cylinder body 33 and an antenna 30 through a transparent cylindrical adapter 31 are mounted at the top tip 27 (top end) of the insertion part 22. The antenna 30 catches information about position from the IC tags 15. A signal cable 32 connected to the antenna 30 runs in the channel 28 inside the insertion part 22 to pass through the endoscope body and then is connected with a signal processing device. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a practice apparatus for enhancing a technique for inserting a medical insertion member such as an endoscope insertion portion into a human or animal tube such as a large intestine.

The operation of inserting and inserting the insertion portion of the endoscope into the large intestine requires skill. Therefore, it is necessary to practice the insertion work repeatedly, but practicing with the human body causes pain to the human body, so as shown in Patent Document 1, the insertion practice of the endoscope is performed using an artificial large intestine model. I have to.
Japanese Patent Laid-Open No. 10-211160

  However, in the above insertion practice, the practitioner cannot accurately know the position of the insertion portion and the insertion locus, and cannot practice efficiently.

The present invention was made to solve the above problems, and in a medical insertion practice apparatus comprising a tube model corresponding to a tube part of a human body or an animal, and a medical insertion member inserted into the tube model, An IC tag is provided on the tube wall of the tube model or in the vicinity thereof, and an antenna for obtaining position information from the IC tag is provided at the tip of the insertion member.
According to this configuration, the tip position of the insertion member or its trajectory can be known during or after the practice, and the insertion practice can be performed efficiently.

  Preferably, a cylindrical adapter is fitted on the outer periphery of the distal end portion of the insertion member, and the antenna is configured by winding an electric wire around the outer periphery of the adapter. According to this, the existing insertion member can be used, and when the antenna breaks down, the adapter can be removed from the insertion member and the antenna can be replaced.

  Preferably, an elastic cylinder is interposed between the outer periphery of the distal end portion of the insertion member and the adapter. According to this, the adapter can be firmly fitted to the insertion member to various insertion members having slight differences in dimensions.

  Preferably, the insertion member is configured by a flexible insertion portion of an endoscope, and the endoscope is further provided with a main body provided at a proximal end of the insertion portion, and a distal end of the insertion portion provided at the main body. And an operation unit that performs a bending operation on the portion, the adapter is transparent and protrudes from the distal end surface of the insertion portion, and the antenna is disposed at a protruding portion of the adapter. According to this, communication with the IC tag can be performed more satisfactorily by the antenna located in front of the distal end of the insertion portion. Moreover, since the adapter is transparent, the observation field of view of the endoscope is not hindered.

  Preferably, the insertion member is configured by a flexible insertion portion of an endoscope, and the endoscope is further provided with a main body provided at a proximal end of the insertion portion, and a distal end of the insertion portion provided at the main body. A channel that connects a window that opens to the distal end surface of the insertion portion and a mouth portion formed in the main body, and the antenna includes a signal cable. The signal cable passes through the channel inside the insertion portion and exits from the main body, and is connected to the signal processing device. According to this, since the signal cable is passed through the channel through which the lever or the like is passed, the signal cable does not interfere with the insertion portion.

  As described above, according to the present invention, the practice of inserting the medical insertion member can be performed efficiently.

  Hereinafter, a medical insertion practice device according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, this medical insertion practice device includes a resin-made large intestine model 10 (tube model) and an endoscope 20 (medical device) imitating a large intestine (tube part) of a human body.

  The large intestine model 10 is attached to a support base 11. A large number (a plurality) of IC tags 15 are attached to the outer surface of the tube wall of the large intestine model 10. The IC tag 15 of the present embodiment uses an inexpensive passive type that does not have a battery, but an active type may also be used.

  The endoscope 20 has the same structure as that of a general endoscope and will not be described in detail. However, the endoscope 20 has a main body 21, a flexible and long insertion portion 22 (medical insertion member) extending from the main body 21, and the main body 21. An operating part 23 for bending the distal end of the insertion part 22, an eyepiece 24 provided on the rear side of the main body 21, a lever opening 25 provided on the main body 21, and an extension from the main body 21. And a light guide cable 26 connected to a light source device (not shown).

  As shown in FIG. 2, the distal end of the insertion portion 22 is composed of a hard distal tip 27. The tip chip 27 is formed with an illumination window (not shown), an observation window 27a, and a cantilever window 27b penetrating in the axial direction. Light from the light source device is irradiated from the illumination window to the outside through an optical fiber that reaches the illumination window of the tip chip 27 through the light guide cable 26, the main body 21, and the insertion portion 22. An objective lens system (not shown) is disposed in the observation window 27a, and this objective lens system and the eyepiece lens system disposed in the eyepiece 24 are optically connected by an optical fiber bundle passing through the insertion section 22. Has been. As a result, an image obtained by the objective lens can be observed by the connecting portion 24. The visual field range in the observation window 27a is indicated by Θ in FIG.

  The lever window 27 b is connected to the lever opening 25 via a tube 28 (canister channel) that passes through the insertion portion 22.

  A loop antenna 30 is attached to the tip chip 27 of the insertion portion 22. This antenna 30 is formed by aligning both ends of the insulated wire 30a, folding it in half, and winding it around the outer periphery of the cylindrical adapter 31 made of a transparent acrylic material, and has a coil shape. The antenna 30 is fixed to the adapter 31 with a transparent adhesive or the like. The electric wire 30a penetrates through the tube wall of the adapter 31 and enters the inside thereof, and the aligned both ends are connected to the end of the coaxial cable 32 (signal cable).

  The adapter 31 with the antenna 30 is attached to the tip chip 27 as follows. An elastic cylinder 33 made of rubber is fitted on the outer periphery of the tip 27 in advance. Since the inner diameter of the elastic cylinder 33 is smaller than the outer diameter of the tip end 27, it fits securely without using an adhesive. Next, the coaxial cable 32 is led out from the main body 21 of the endoscope 20 through the cantilever window 27 b of the distal end tip 27, the tube 28, and the cantilever opening 25.

  Next, the adapter 31 is fitted on the outer periphery of the elastic cylinder 33. Since the inner diameter of the adapter 31 is smaller than the outer diameter of the elastic cylinder 33, the adapter 31 is press-fitted, and the adapter 31 fits firmly into the elastic cylinder 33. In this way, the antenna 30 is attached to the tip chip 27 via the adapter 31 and the elastic cylinder 33. By interposing the elastic cylinder 33, the adapter 30 with the antenna 30 can be attached to the insertion portions 22 of a plurality of types of existing endoscopes 20 in which the diameter and shape of the distal tip 27 are slightly different.

  The adapter 31 protrudes forward from the tip surface of the tip chip 27. Since the antenna 30 is mounted on the protruding portion of the adapter 31, the antenna 30 is positioned in front of the tip surface of the tip chip 27 (that is, the observation window 27a).

  The coaxial cable 30 a passes through the above-described lever window 27 b, the tube 28, and the lever opening 25, leaves the main body 21 of the endoscope 20, and is connected to the signal processor 40.

  In the above configuration, the insertion practice is performed as follows. When the insertion portion 22 of the endoscope 20 is inserted into the large intestine model 10 and the distal end thereof reaches the vicinity of the bent portion of the large intestine model 10, the operation portion 23 is operated so that the distal end portion of the insertion portion 22 is shaped as the bent portion. The insertion portion 22 is further advanced to the back. By repeating this insertion practice, the skill level is increased.

  When a command signal is output from the signal processing device 40 during the insertion practice of the insertion unit 22, the command signal reaches the antenna 30 through the coaxial cable 32, and a radio wave having a predetermined frequency is transmitted from the antenna 30. Then, the IC tag 15 located in the vicinity of the antenna 30 responds to the radio wave and emits a radio wave including position information stored in advance. The antenna 30 receives this radio wave and sends it to the signal processing device 40. The signal processing device 40 processes the received signal to obtain information useful for insertion practice. For example, information on the trajectory of the distal end of the insertion unit 22 is obtained and compared with the large intestine model 10 to determine its skill level, and the trajectory and the image of the large intestine model 10 are displayed on the display unit for practice. Inform the person. Alternatively, the tip position of the insertion portion is informed using voice information or the like during practice.

  Since the antenna 30 is located in front of the observation window 27a of the insertion portion 22, the antenna 30 can be brought close to the IC tag 15 and can easily communicate with the IC tag 15. In order to position the antenna 30 forward, the adapter 31 protrudes from the distal end of the insertion portion 22. However, since the adapter 31 is transparent, it is not necessary to narrow the observation field of view.

  When the antenna 30 breaks down, the adapter 31 can be easily replaced or repaired by removing the adapter 31 from the tip chip 27.

  Next, a second embodiment of the present invention will be described. In this embodiment, the distal end tip 27 ′ of the insertion portion 22 ′ of the endoscope has a small diameter portion 27x on the distal end side, and a loop antenna 30 similar to that of the first embodiment is wound directly on the outer periphery of the small diameter portion 27x. Has been. The antenna 30 is covered with a hood 50 attached to the small diameter portion 27x. The signal cable 32 connected to the antenna 30 extends toward the main body along the outer surface of the insertion portion 22 '.

  The present invention is not limited to the above embodiment, and various aspects can be adopted. For example, in the first embodiment, the signal cable 32 may be provided along the outer surface of the insertion portion 22, or in the second embodiment, the signal cable 32 may be inserted through a channel in the insertion portion 22.

The medical insertion practice apparatus of the present invention may be provided with a tube model imitating a blood vessel (tube portion) of a human body and a catheter (medical insertion member), or imitating a human trachea (tube portion). A tube model and an intubation tube (medical insertion member) may be provided.
The human body tube part model may be an artificial body such as a cow or a pig instead of an artificial one, or the human large intestine itself may be used. In the case of an insertion practice device for veterinary medicine, an animal tube model is used.

The IC tag may be embedded in the tube wall of the tube model.
The IC tag may store only individual ID information instead of the position information itself and transmit this ID information. In this case, since the signal processing apparatus stores position information corresponding to the ID information, the ID information substantially includes the position information.
The endoscope may be of a type in which a CCD is arranged on the back side of the tip of the insertion portion and an image of this CCD is displayed on a television screen.

It is a top view of the insertion practice device which makes a 1st embodiment of the present invention. It is an expanded sectional view of the principal part. It is an expanded sectional view of the principal part of the insertion practice apparatus which makes 2nd Embodiment of this invention.

Explanation of symbols

10 Large intestine model (tube model)
15 IC tag 20 Endoscope 21 Main body 22 Insertion part (medical insertion member)
23 Operation part 25 Kanko mouth part (mouth part)
27 Tip (tip of the insertion part)
27b Kanko window (window)
28 Tube (Channel)
30 Antenna 30a Electric wire 31 Adapter 32 Coaxial cable (signal cable)
33 Elastic cylinder 40 Signal processing device

Claims (5)

In a medical insertion practice device comprising a tube model corresponding to a human body or animal tube, and a medical insertion member inserted into the tube model,
An insertion practice device for medical use, characterized in that an IC tag is provided on or near the tube wall of the tube model, and an antenna for obtaining position information from the IC tag is provided at the tip of the insertion member.   The medical insertion practice device according to claim 1, wherein a cylindrical adapter is fitted on the outer periphery of the distal end portion of the insertion member, and the antenna is configured by winding an electric wire around the outer periphery of the adapter.   The medical insertion practice device according to claim 2, wherein an elastic cylinder is interposed between the outer periphery of the distal end portion of the insertion member and the adapter. The insertion member is constituted by a flexible insertion portion of an endoscope. The endoscope further includes a main body provided at a proximal end of the insertion portion, and a distal end portion of the insertion portion provided at the main body. An operation unit to operate,
The medical insertion practice device according to claim 2 or 3, wherein the adapter is transparent and protrudes from a distal end surface of the insertion portion, and the antenna is disposed at a protruding portion of the adapter. The insertion member is constituted by a flexible insertion portion of an endoscope. The endoscope further includes a main body provided at a proximal end of the insertion portion, and a distal end portion of the insertion portion provided at the main body. And a channel that connects a window that opens to the distal end surface of the insertion portion and a mouth formed in the main body, and is provided in the insertion portion.
4. The signal antenna according to claim 1, wherein a tip of a signal cable is connected to the antenna, and the signal cable passes through a channel inside the insertion portion and exits from the main body to be connected to a signal processing device. Medical insertion practice device.

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