JP2009273610A - Ic tag with indwelling function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sign by which an operator appropriately recognizes a lesioned part in a surgery. <P>SOLUTION: This IC tag 1 is provided with locking pieces 2a and 2b, in order that the IC tag 1 can dwell at a predetermined position by insertion into a human body. In the surgery, an operator can confirm the position of the IC tag 1 and individual information by a sensor and extract the lesioned part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an IC tag having an indwelling function in which an IC tag is inserted into a lesioned part of a human body and the IC tag can be placed at a predetermined position.

  In recent years, the development of endoscopic surgical instruments and surgical techniques has been remarkable, and as a result, the lesioned part to be operated becomes smaller, but the case where it is difficult to identify the lesioned part is also expanding. Therefore, it is strongly desired to develop a means by which an operator can know the exact position of a lesion site during surgery.

Prior to the operation, a lesion site is confirmed by an image diagnostic device such as an endoscope or CT, and this is labeled by some method, and an excision operation can be performed while confirming this label. By the way, the following are known as conventional labeling methods.
(1) A method of injecting a dye into or near a lesion.
The “Surgery, Detection and Treatment of Tumors and Lesions in Endovascular Procedures or Endoscopic Procedures” according to Japanese Translation of PCT International Publication No. 8-500335 is a method in which an effective amount of a drug is parenterally injected into a patient receiving the procedure The label can be detected by an endoscope or intravascular catheter or by a light source supplied during a surgical procedure.
However, with this method, the injected dye diffuses over time, and it is not easy to grasp the exact lesion site.
(2) A method of inserting and leaving an indwelling needle in or near a lesion.
Japanese Patent Application Laid-Open No. 2008-100069 discloses an “ultrasonic system for displaying a composite image of an ultrasound image and an external medical image” on a composite image of the ultrasound image and the external medical image in real time during a catheter operation process. An ultrasound system that displays a needle.
The ultrasonic system includes an ultrasonic diagnostic unit including a probe for receiving an input of an ultrasonic signal reflected from a target body and a medical needle inserted into the target body, and positional information of the probe on the target body A probe position information providing unit for providing an image, a video signal providing unit for providing an external video signal obtained from an external video device and forming an external video of the object, and a position of a lesion in the external video from a user A user input unit for receiving input of information, a video processing unit for forming a composite image of an ultrasound image and an external image based on the position information of the probe and the position information of the lesion, the ultrasound image, A display unit for displaying the external video and the composite video.
However, in this method, the medical needle inserted in the lesion or in the vicinity of the lesion is displaced, and the lesion site may not be specified, and sometimes the inserted medical needle may be lost.
(3) A method of leaving a clip in or near a lesion.
“Surgery lesion identification system” according to Japanese Patent Application Laid-Open No. 2005-218680 is an inexpensive and simple surgical lesion identification system that can identify a lesion in real time only by confirming an observation image of an endoscope It is.
That is, a light source clip is placed around the lesion. In this state, the LED of the light source clip is caused to emit light, and the light is imaged by a CCD element of a rigid endoscope disposed in the vicinity of the wall portion on the opposite side to the lung wall portion where the light source clip is placed. The image picked up by the CCD element is subjected to image processing, and light having a wavelength in the near infrared region of the LED is superimposed on the image in the visible region and recognized by the operator on the monitor of the rigid endoscope to identify the lesioned part.
However, in this method, the clip left in the vicinity of the lesion or the lesion is displaced, and the lesion site may not be specified, and sometimes the remaining clip may be dropped. Furthermore, in the case of a non-tactable operation, it is difficult to grasp the exact position of the clip.
(4) A method of leaving a magnetic substance in or near a lesion.
The “in-body position detection system” according to Japanese Patent Application Laid-Open No. 2002-1113018 is a means for detecting the position of all lesions quickly, easily and at a low cost during surgery. Indwelling in advance at the lesion, the position of the clip placed by the detector is probed during subsequent surgery. The detector is provided with a magnetic sensor, and can output sound or light having a strength corresponding to the detected magnetic strength. The surgeon can recognize the position of the clip by sound or light output and excise the diseased tissue.
However, this method requires the installation of a three-dimensional sensor outside the body in order to determine the exact position of the magnetic body, and this sensor is a large-scale device for calculating the position of the magnetic body and displaying it to the operator. It becomes.
(5) A method in which 3 to 4 metal balls are left in the vicinity of the lesion or near the lesion, and the position is determined by X-ray irradiation from two directions.
In this method, it is impossible to always irradiate X-rays in an endoscopic operation. Therefore, it is difficult to grasp the position of a lesion site, and the apparatus becomes large.
"Detection and treatment of tumors and lesions in surgery, endovascular procedures or endoscopic procedures" according to Tokuhei Hei 8-500335 “Ultrasound system for displaying composite image of ultrasound image and external medical image” according to Japanese Patent Application Laid-Open No. 2008-100069 "Surgery lesion identification system" according to JP-A-2005-218680 “Body position detection system” according to Japanese Patent Application Laid-Open No. 2002-1113018

  Various labeling methods for identifying a lesion site are known, but there are problems as described above. The problems to be solved by the present invention are these problems, the lesion site can be accurately labeled, and the surgeon can perform an excision operation based on the label, and the body can be downsized to reduce the body. An IC tag that can be placed at any site is provided.

  The IC tag according to the present invention has an indwelling function so that the IC tag is inserted into the body by some means and does not move at that position. However, the internal structure of the IC tag itself is not limited. Here, the means functioning as an indwelling function is provided with a locking piece so that it does not move laterally or return backward by being pushed and inserted into a predetermined lesioned part or near the lesioned part. That is, by attaching one or more locking pieces to the IC tag, the locking pieces can be caught in the body and placed at a predetermined position. In some cases, the IC tag itself has a shape having a locking piece function. For example, a substantially V shape, a roughly triangular shape, or the like can be formed.

  On the other hand, a detention function may be provided by attaching a coil spring or a spring to the IC tag as a specific form of the locking piece. In other words, when the IC tag is accommodated in a catheter or a cylindrical applicator and pushed out, it is stretched straight and inserted into the lesioned part or the vicinity of the lesioned part and simultaneously restored to the original coil spring shape or spring spring shape. Can be placed at that position. For example, if a shape memory alloy whose shape is restored at body temperature is used as a spring material, it is restored to a coil spring or spring having a predetermined shape at the same time as being inserted into the lesion. This type of IC tag is generally intended for placement in blood vessels and thin tubes.

  There are various sizes of IC tags ranging from small ones of about 0.3 mm to those of about 2 to 3 cm. In the present invention, the size of the IC tag is not limited. Actually, a relatively small IC tag is preferable, but it may be properly used depending on the application. For example, in the case of a brain tumor, a small IC tag that can enter a thin cerebral blood vessel is used. In addition, there are two types of IC tags, namely, an electromagnetic induction method (magnetic field type tag) and a radio wave communication method (electric field type tag), and an active type and a passing type.

  When inserting an IC tag in or near a lesioned part, when using an endoscope to recognize the lesioned part, when confirming a lesioned part using CT, a lesioned part using X-rays In some cases, an echo may be used, and an IC tag set on a catheter or a cylindrical applicator can be pushed out by a pusher and placed in or near the lesion. On the other hand, a small IC tag placed in the body is confirmed by a sensor, but it is also possible to adopt a structure in which a special antenna is provided so that it can respond even if the signal transmitted from the sensor is weak.

  Since the IC tag according to the present invention has an indwelling function, the position of the IC tag is not changed by pushing the IC tag out of the needle and inserting it into the lesioned part or the vicinity of the lesioned part. After confirming the lesion using an endoscope or CT, an IC tag is inserted at a predetermined position, so that the position of the lesion can be accurately grasped during surgery. Even in a small lesion that cannot be recognized with the naked eye during surgery, a signal transmitted from the IC tag can be detected by a sensor and the lesion can be removed.

  That is, the operator can confirm the position of the IC tag placed in or near the lesioned part by bringing the sensor closer. Here, the sensor can detect the signal transmitted from the IC tag by bringing it close to a predetermined distance. That is, since the operator can be informed of the distance from the tip of the sensor by bringing the sensor closer to the IC tag, the position of the IC tag, that is, the lesion site can be accurately grasped. When the position is confirmed, the position is determined by baking the lesion site.

  Depending on the lesion, there are various forms. For example, in the case of cancer, if an early stage small cancer, one IC tag is inserted and placed. However, in the case of a gun spread in a certain area, it is necessary to place a plurality of IC tags. At this time, by assigning a number to each IC tag, it is possible to grasp the position in the case of surgery and extract it without leaving cancer cells.

  The IC tag is smaller than a conventional label. In the case of a brain tumor, the IC tag can be placed in a predetermined position by inserting a small IC tag into the cerebral blood vessel and locking the locking piece in the blood vessel. In addition, since the marker is highly reliable and a cancer that has been enlarged widely, a plurality of IC tags can be driven and placed, so that there is no unremoved residue during surgery.

  FIG. 1 is an embodiment showing an IC tag having an indwelling function according to the present invention. In FIG. 1, 1 denotes an IC tag, 2a and 2b denote locking pieces, and the IC tag 1 has two locking pieces 2a and 2b. Here, the IC tag 1 is a chip composed of an antenna and an LSI, and the outer surface is covered with a resin, and thin spring-like locking pieces 2a and 2b are connected to and extend from the IC tag. Therefore, when the IC tag 1 is inserted into the body, both the locking pieces 2a and 2b bend inward and contract each other. However, if the IC tag 1 stops at a predetermined lesion site, the IC tag 1 spreads outward, and the IC tag 1 is at that position. Detained.

  FIG. 2 shows another embodiment of the present invention, in which the IC tag has an inverted V shape. That is, since the tip is thin and sharp as an inverted V shape, it is easy to insert into the body, and when it reaches a predetermined lesion site, it is placed without returning. The shape provided with the indwelling function in the IC tag itself is not limited to the inverted V shape shown in FIG. 2, but may be a triangle. Further, the locking pieces 2a and 2b are combined with the inverted V shape or the triangular IC tag. It is also possible to adopt a form.

  FIG. 3 shows still another embodiment of the IC tag 1 having an indwelling function according to the present invention. The IC tag 1 is provided with a spring 3, and the IC tag 1 inserted into a predetermined lesion site is left without moving by the spring spring 3. Here, if, for example, a shape memory alloy is used as the material of the mainspring, the mainspring 3 extends straight when set in the needle hole as shown in FIG. When it reaches a predetermined temperature (about 36 ° C.), it can be deformed and restored to its original shape. That is, by restoring the shape of the spring spring 3, the position of the inserted IC tag is left unchanged.

By the way, the application of the IC tag having the indwelling function according to the present invention is not particularly limited. Basically, it is used as a labeling means for an operator to recognize a lesion during surgery, and can be applied specifically to the next lesion.
(1) Colorectal cancer Colorectal cancer occurs on the inner wall surface of the large intestine. The cancer that has occurred on the inner wall is discovered by an endoscope, and an IC tag is inserted and placed in the vicinity of colon cancer or colon cancer using the endoscope.
(2) Breast cancer Although breast cancer occurs in soft tissues, it can be used as a label for inserting and placing an IC tag and extracting cancer cells while confirming breast cancer by CT, echo, or the like.
(3) Lung cancer In the case of lung cancer, a needle is inserted from the body surface using CT, or an endoscope or a catheter is inserted from the bronchus, and an IC tag is inserted and placed at a predetermined lesion site.
(4) Liver cancer In the case of liver cancer, a thin tube is inserted from a blood vessel, a predetermined lesion site is identified using, for example, an echo, and an IC tag is inserted and placed at this position. Alternatively, the IC tag can be inserted and placed by inserting a needle from the body surface.
(5) Brain tumor A very thin tube can be inserted into a blood vessel, a lesion can be identified using CT, and an IC tag can be pushed out of the tube and placed.

  FIG. 4 shows the case where cancer cells 5 are generated in the large intestine 4, and the IC tag 1 according to the present invention can be placed at the cancer site. Cancer cells 5 are generated on the inner wall 6 of the large intestine 4, and these cancer cells 5 can be confirmed by the endoscope 7. That is, if the endoscope 7 is inserted from the anus and examined, cancer cells 5 generated on the inner wall 6 of the large intestine 4 are confirmed. If the cancer cell 5 is confirmed, the IC tag 1 is extruded and inserted into the center of the cancer cell 5. The position of the inserted IC tag 1 is determined by the locking pieces 2a and 2b, and the IC tag 1 is left without returning backward even if the needle is pulled out.

  FIG. 5 shows the distal end portion of the endoscope 7. Reference numerals 8a and 8b in FIG. 5 denote light sources, which can emit light from an apparatus main body (not shown) via optical fibers 9a and 9b. The light is reflected and incident from the lens 10, and is displayed as an enlarged image on the display of the device body via the optical fiber 11. The surgeon pushes the IC tag 1 close to the needle while viewing this image, and inserts the IC tag 1 at a predetermined position.

  FIG. 6 shows the needle 12 on which the IC tag 1 is set. This needle 12 is connected to the distal end of a tube extending to the operator's hand and is in a state where it can be inserted into and removed from the channel 13 of the endoscope 7, and the pusher 14 accommodated in the needle hole 15 is inserted into the distal end side. The IC tag 1 is pushed out by the pusher 14. In this case, as shown in FIG. 4, the needle 12 protrudes from the distal end of the endoscope 7 and is inserted into the cancer cell 5, and in this state, the pusher 14 moves to push out the IC tag 1. The IC tag 1 is inserted into the cancer cell 5, and the locking pieces 2a and 2b are spread and placed.

  The needle 12 fitted in the channel 13 of the endoscope 7 can be taken in and out of the channel 13 by operating a tube extending to the hand. The pusher 14 is connected to a thin wire inserted through the hole of the tube, and the pusher 14 can be pushed out by operating the wire at hand. Of course, in the present invention, the means for inserting the IC tag 1 at or near the lesioned part is not limited.

  FIG. 4 shows a state in which the needle 12 protrudes to some extent from the distal end of the endoscope 7, and if the needle 12 is stabbed into or near the cancer cell 5 and pressed in this state by the pusher 14, IC The tag 1 is pushed out from the tip of the needle 12 and is embedded and placed in the cancer cell 5. The locking pieces 2 a and 2 b of the IC tag 1 shown in FIG. 1 extend straight in both outward directions, but are bent along the side of the IC tag 1 in the needle hole 15. Then, while being pushed out from the needle hole 15, the locking pieces 2 a, 2 b are restored and extend straight outward, and the locking pieces 2 a, 2 b are locked to the cancer cell 5, and even if the needle 12 is pulled out, it is reversed. There is nothing.

  Here, a thin spring material is used for the locking pieces 2a and 2b. Alternatively, a shape memory alloy can be used. That is, when the temperature rises to around 36 ° C. at the same time as being inserted into the cancer cell 5, the locking pieces 2a and 2b bent along the side of the IC tag 1 are restored to the original shape and both Can extend straight outward.

  The IC tag 1 shown in FIG. 2 is also set in the needle hole 15 and pushed out by the pusher 14. The inverted V-shaped IC tag 1 is set by being fitted into the needle hole 15 with the whole or both sides curved in an arc shape. Therefore, when the pusher 14 is pushed out from the tip of the needle, the curved shape is restored to a flat shape, and even if the needle 12 is retracted, both ends are locked and do not return and remain in that position. Is done.

  The IC tag 1 provided with the mainspring 3 shown in FIG. In this case, the mainspring 3 is in a state of extending straight, and is restored to the mainspring 3 at the same time as being inserted into a blood vessel in the body, for example. That is, a shape memory alloy is used for the mainspring 3, and when the temperature reaches around 36 ° C., the mainspring can be restored to the shape of the mainspring and is left at the inserted position.

  By the way, the IC tag is a chip in which an antenna and an LSI are integrated, but a special antenna can be provided so that it can react to a weak signal transmitted from the sensor.

The Example of the IC tag provided with the indwelling function which concerns on this invention. Another embodiment of an IC tag having an indwelling function according to the present invention Another embodiment of an IC tag having an indwelling function according to the present invention Cancer cells that have developed on the inner wall of the large intestine. End of the endoscope. When the IC tag is set in the needle hole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 IC tag 2 Locking piece 3 Spring spring 4 Large intestine 5 Cancer cell 6 Inner wall 7 Endoscope 8 Light source 9 Optical fiber
10 lenses
11 Optical fiber
12 stitches
13 channels
14 Pusher
15 Needle hole

Claims (6)

An IC tag having an indwelling function characterized in that the IC tag is provided with a locking piece so that the IC tag can be inserted into the human body and placed at a predetermined position in order to identify a lesioned part. . 2. The IC tag having an indwelling function according to claim 1, wherein a thin wire material having a spring property is attached to both sides of the IC tag as the locking piece. The IC tag having an indwelling function according to claim 1, wherein a coil spring or a spring is attached to the IC tag as the locking piece. Indwelling function characterized in that the shape of the IC tag is approximately V-shaped or approximately triangular so that the IC tag can be inserted into the human body and placed at a predetermined position in order to identify a lesioned part. IC tag equipped with. In order to identify the lesion, an IC tag can be inserted into the human body and placed at a predetermined position so that the shape of the IC tag is approximately V-shaped or approximately triangular, and locking pieces are provided on both sides. An IC tag with an indwelling feature characterized by being provided. 6. An IC tag having an indwelling function according to claim 1, further comprising a special antenna for receiving and responding to a weak signal from a sensor.

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