JP2022032811A - Hand marker - Google Patents

Abstract

To provide a hand marker that can make a subject hardly feel uncomfortable even when an attachment part of the hand marker is brought into contact with the subject, and the attachment part of which can be hardly broken.SOLUTION: A hand marker is used to make a monitor display a mark indicating a position of a person's hand on the outside of a subject's body, when the monitor displays a shape of an endoscope within the subject's body. The hand marker comprises a maker body that has a built-in element for position detection, and an attachment part on which his/her finger is hooked to attach the marker body to his/her hand and which is formed from an elastomer.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to hand markers.

Endoscopes for observing the inside of a subject such as a patient are known. In endoscopic examination, in addition to the upper gastrointestinal tract such as the esophagus, the lower gastrointestinal tract such as the large intestine is observed. The lower gastrointestinal tract is intricately curved, unlike the upper gastrointestinal tract, which extends relatively linearly. When the endoscope is inserted into the lower gastrointestinal tract, the insertion part of the endoscope is also complicatedly curved. In order to grasp the shape of the insertion part of the endoscope inserted into the body of the subject, an endoscope shape detecting device that detects the shape of the insertion part of the endoscope inside the body of the subject is known. ing.

The endoscope shape detection device has a function of imaging the shape of the insertion portion based on the acquired information by acquiring information for imaging the shape of the insertion portion in the body by using, for example, magnetism. I have. For example, a plurality of magnetic field generating elements are arranged at intervals in the insertion portion of the endoscope. The endoscope shape detection device detects the magnetic field generated by each magnetic field generating element in the insertion portion by the magnetic field detecting element arranged outside the body of the subject. Since the magnetic field strength of each detected magnetic field generating element represents the position of each part of the insertion portion with respect to the magnetic field detecting element outside the body of the subject, the endoscope shape detecting device determines the magnetic field strength of each magnetic field generating element. The information in the above is used as information for imaging the shape of the insertion portion to generate an image showing the shape of the insertion portion. Then, the generated image is displayed on the monitor and presented to a user such as an operator.

In addition, since it may be difficult for the operator to insert the endoscope into the complicatedly curved lower gastrointestinal tract, an assistant such as a nurse assists the operator to insert the endoscope. In some cases. The assistant touches the abdomen of the subject to confirm the position of the insertion part of the endoscope, or presses the lower gastrointestinal tract from outside the subject's body, so-called manual compression to make it easier to insert the endoscope. ..

As described in Patent Documents 1 and 2, a hand marker may be used in combination with the endoscope shape detection device as described above. The hand marker is used to display a mark indicating the position of the assistant's hand outside the body of the subject on the monitor when displaying the shape of the endoscope inside the body of the subject on the monitor. The hand marker has a built-in magnetic field generating element like an endoscope, for example. The endoscope shape detection device detects the position of the hand marker by detecting the magnetic field generated by the hand marker. Since the hand marker is attached to the assistant's hand, the detected mark indicating the position of the hand marker functions as a mark indicating the position of the assistant's hand. The endoscope shape detection device displays this mark on the monitor together with the shape of the insertion portion of the endoscope. This makes it possible to grasp the relative positional relationship between the position of the assistant's hand outside the body of the subject and the insertion portion of the endoscope inside the body of the subject (see, for example, Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2002-085338 Japanese Unexamined Patent Publication No. 08-000542

The hand marker is provided with a marker body having a built-in element for position detection such as a magnetic field generating element, and a mounting portion for mounting the marker body on a human hand, and a mounting portion on which the fingers of the hand can be hung. There is. The hand marker is attached to the hand in a posture in which the marker body is placed on the back side of the hand by hooking a finger on the attachment portion.

Since a part of the wearing part to be hung on the finger wraps around the palm side, a part of the wearing part touches the subject when the hand is pressed against the subject. In that case, the subject may feel uncomfortable. Further, if the manual pressure is applied with a strong force, a strong force may be applied to the mounting portion and the mounting portion may be damaged.

Neither of the hand markers described in Patent Documents 1 and 2 suggests or discloses such problems and countermeasures.

An object of the present disclosure technique is to provide a hand marker in which the subject does not feel uncomfortable even if the mounting portion of the hand marker touches the subject, and the mounting portion is not easily damaged.

The hand marker of the present disclosure is a hand used to display a mark indicating the position of a person's hand outside the body of the subject on the monitor when displaying the shape of the endoscope inside the body of the subject on the monitor. A marker body having a built-in element for position detection, and a mounting portion on which the fingers of the hand are hung to mount the marker body on the hand, and a mounting portion made of an elastomer. Be prepared.

The element for position detection can be a coil for generating a magnetic field or a coil for detecting a magnetic field.

Further, when the surface of the outer peripheral surface of the marker body on which the mounting portion is provided is the lower surface and the marker body is viewed from the side orthogonal to the vertical direction of the marker body, the outline of the marker body is It is preferable that they are all formed by curves.

Further, the marker main body has an elongated shape, and the first surface of the outer peripheral surface of the marker main body on which the mounting portion is provided has a central portion convex to the opposite side to the mounting portion with respect to both ends in the longitudinal direction of the marker main body. It is preferable that it has an arc shape.

Further, the marker main body has an elongated shape, and the second surface of the outer peripheral surface of the marker main body facing the first surface on which the mounting portion is provided has the central portion as the mounting portion with respect to both ends in the longitudinal direction of the marker main body. It is preferable to have an arc shape that is convex on the opposite side.

Further, it is preferable that the mounting portion is a J-shaped hook having one end fixed to the marker main body and the other end being a free end.

Further, it is preferable that the distance between the first surface of the outer peripheral surface of the marker body where the base end of the hook is provided and the tip of the hook is shorter than the maximum distance between the hook and the first surface.

Further, it is preferable that the marker body has an elongated shape and the tip of the hook extends along the longitudinal direction of the marker body.

Further, the marker body may have an elongated shape and a cable may be connected to the marker body, and the cable may be pulled out from one end in the longitudinal direction of the marker body.

Further, the cable is connected to the marker main body, and the cable may be pulled out from a position where a gap is formed between the outer peripheral surface of the cable and the first surface of the marker main body facing the hand.

Further, the marker main body may have a built-in wireless communication unit.

Further, a rotation mechanism for rotating the mounting portion with respect to the marker main body may be provided.

According to the technique of the present disclosure, it is possible to provide a hand marker in which the subject is less likely to feel uncomfortable even when the attachment portion of the hand marker touches the subject, and the attachment portion is less likely to be damaged.

It is explanatory drawing which shows the state of the endoscopy using an endoscopy system. It is a schematic diagram which shows the whole structure of an endoscope system. It is a perspective view of a hand marker. It is a side view of a hand marker. It is a figure which shows the state which the hand marker is attached to the hand. It is a figure which shows the state which the hand is tilted with the hand marker attached to the hand. It is a side view of a hand marker. It is a bottom view of a hand marker. It is a figure which shows the state which the hand marker is attached to the hand. It is a side view of a hand marker.

[Overall configuration of the endoscope system]
FIG. 1 is a schematic view showing an overall configuration of an endoscope system 1 provided with an endoscope shape display control device according to the technique of the present disclosure. As shown in FIG. 1, the endoscope system 1 includes an endoscope 10, a light source device 11, a navigation device 12, a magnetic field generator 13, a processor device 14, a monitor 15, a hand marker 50, and the like. To prepare for. The endoscopy system 1 is used for endoscopy in the body of the subject H. Subject H is an example of a subject. The endoscope 10 is an endoscope inserted into the digestive tract such as the large intestine, and is a flexible endoscope. The endoscope 10 is connected to an insertion portion 17 to be inserted into the digestive tract, an operation portion 18 connected to the base end side of the insertion portion 17 and gripped by the operator to perform various operations, and an operation portion 18. It has a universal code 19 and.

The endoscopy is performed, for example, in a state where the subject H is laid down on the top surface 16A of the bed 16. In the case of a large intestine examination, the insertion portion 17 of the endoscope 10 is inserted from the anus into the lower gastrointestinal tract by the surgeon OP who is a doctor.

The assistant MT assists the procedure of inserting the insertion portion 17 of the endoscope 10 into the body performed by the surgeon OP. The assistant MT, with the hand marker 50 attached to the hand, touches the abdomen of the subject H to confirm the position of the insertion portion 17 of the endoscope 10, or the lower gastrointestinal tract from outside the body of the subject H. The insertion portion 17 of the endoscope 10 is easily inserted by performing manual compression for compression. The hand marker 50 is connected to the navigation device 12 via a cable 53. The hand of the assistant MT is an example of the hand of a person outside the body of the subject H, which is an example of the subject.

The light source device 11 supplies the endoscope 10 with illumination light that illuminates the inside of the lower digestive tract such as the large intestine, which is the observation site. The processor device 14 generates the observation image 41 by processing the image captured by the endoscope 10. The observation image 41 is displayed on the monitor 15.

The surgeon OP proceeds with the endoscopy while confirming the observation image 41. The observation image 41 displayed on the monitor 15 is basically a moving image, but it is also possible to display a still image as the observation image 41 as needed.

Further, the endoscope system 1 has a navigation function for navigating the insertion procedure of the endoscope 10 performed by the operator OP. Here, the navigation means the operator OP by presenting the insertion state including the position and shape of the insertion portion 17 of the endoscope 10 in the body of the subject H to the operator OP and the assistant MT. It means to support the insertion procedure of the endoscope 10. Further, the navigation can present the position of the hand of the assistant MT equipped with the hand marker 50 together with the insertion state of the insertion portion 17 of the endoscope 10.

The navigation function is realized by the navigation device 12, the magnetic field generator 13, the magnetic field measuring device in the endoscope 10, and the magnetic field measuring device in the hand marker 50. The magnetic field generator 13 generates a magnetic field MF. The magnetic field generator 13 is attached to, for example, a stand and is arranged beside the bed 16 on which the subject H lies. Further, the magnetic field generator 13 is arranged within a range where the generated magnetic field MF reaches the body of the subject H.

The magnetic field measuring device in the endoscope 10 detects the magnetic field MF generated by the magnetic field generator 13 and measures the strength of the detected magnetic field MF. Similarly, the magnetic field measuring device in the hand marker 50 detects the magnetic field MF generated by the magnetic field generator 13 and measures the strength of the detected magnetic field MF.

The navigation device 12 detects the insertion state of the insertion unit 17 by deriving the relative position between the magnetic field generator 13 and the insertion unit 17 based on the magnetic field measurement result by the magnetic field measurement device in the endoscope 10. do. Further, the navigation device 12 detects the relative position between the magnetic field generator 13 and the hand marker 50 based on the magnetic field measurement result by the magnetic field measuring device in the hand marker 50. The processor device 14 generates a navigation image 42 showing the insertion state of the insertion unit 17 detected by the navigation device 12 and the position of the hand marker 50. In the navigation image 42, an insertion portion image 42a showing the insertion state of the insertion portion 17 and a mark 42b indicating the position of the hand marker 50 are displayed.

The monitor 15 displays the observation image 41 and the navigation image 42. A monitor 15 for displaying the observation image 41 and the navigation image 42 may be separately provided.

As shown in FIG. 2, the insertion portion 17 of the endoscope 10 is a tubular portion having a small diameter and a long length, and the flexible portion 21 and the curved portion 22 are sequentially arranged from the proximal end side to the distal end side. It is configured by being connected to the tip portion 23. The flexible portion 21 has flexibility. The curved portion 22 is a portion that can be curved by the operation of the operating portion 18. An image pickup device (not shown) or the like is arranged at the tip portion 23.

Further, although not shown in FIG. 2, on the tip surface of the tip portion 23, an illumination window that illuminates the observation portion with illumination light, an observation window in which the subject light reflected by the illumination light is incident, and a treatment tool protrude. A treatment tool outlet for making the observation window and a cleaning nozzle for cleaning the observation window by injecting gas and water into the observation window are provided.

A light guide 33, a signal cable 32, an operation wire (not shown), and a pipeline for inserting a treatment tool (not shown) are provided in the insertion portion 17. The light guide 33 extends from the universal cord 19 and guides the illumination light supplied from the light source device 11 to the illumination window of the tip portion 23. The signal cable 32 is used for power supply to the image pickup device in addition to communication of the image signal from the image pickup device and the control signal for controlling the image pickup device. Like the light guide 33, the signal cable 32 also extends from the universal cord 19 and is arranged up to the tip portion 23.

The operation wire is a wire for operating the curved portion 22, and is arranged between the operating portion 18 and the curved portion 22. The pipe for inserting the treatment tool is a pipe for inserting the treatment tool such as forceps, and is arranged from the operation portion 18 to the tip portion 23. In addition to this, a fluid tube for supplying air and water is provided in the insertion portion 17. The fluid tube supplies the tip 23 with gas and water for cleaning the observation window.

Further, in the insertion portion 17, a plurality of detection coils 25 are provided from the flexible portion 21 to the tip portion 23 at preset intervals. Each detection coil 25 corresponds to a magnetic field detection element that detects the magnetic field MF. Each detection coil 25 is affected by the magnetic field MF generated from the magnetic field generator 13, so that an induced electromotive force is generated by the action of electromagnetic induction, and an induced current is generated by the induced electromotive force. The value of the induced current generated from each detection coil 25 represents the strength of the magnetic field MF detected by each detection coil 25, and this is the magnetic field measurement result. That is, the magnetic field measurement result means a value corresponding to the magnitude of the induced current representing the strength of the magnetic field MF.

The operation unit 18 is provided with various operation members operated by the operator. Specifically, the operation unit 18 is provided with two types of bending operation knobs 27, an air supply / water supply button 28, and a suction button 29. Each of the two types of bending operation knobs 27 is connected to an operation wire, and is used for a left-right bending operation and a vertical bending operation of the bending portion 22. Further, the operation unit 18 is provided with a treatment tool introduction port 31 which is an entrance of a pipeline for inserting the treatment tool.

The universal cord 19 is a connection cord for connecting the endoscope 10 to the light source device 11. The universal cord 19 includes a signal cable 32, a light guide 33, and a fluid tube (not shown). Further, a connector 34 connected to the light source device 11 is provided at the end of the universal cord 19.

By connecting the connector 34 to the light source device 11, the light source device 11 supplies the endoscope 10 with electric power, a control signal, illumination light, gas, and water necessary for operating the endoscope 10. Further, the image signal of the observation portion acquired by the image pickup device of the tip portion 23 and the magnetic field measurement result based on the detection signal of each detection coil 25 are transmitted from the endoscope 10 to the light source device 11.

The connector 34 is not electrically connected to and from the light source device 11 by using a metal signal line or the like, and instead, the connector 34 and the light source device 11 are in optical communication (that is, non-contact). It is connected so that it can communicate by type communication). The connector 34 transmits and receives a control signal exchanged between the endoscope 10 and the light source device 11 and transmits an image signal and a magnetic field measurement result from the endoscope 10 to the light source device 11 by optical communication. The connector 34 is provided with a laser diode (hereinafter referred to as LD) 36 connected to the signal cable 32.

The LD 36 is used for transmitting a large amount of data from the endoscope 10 to the light source device 11, specifically, transmitting an image signal and a magnetic field measurement result. The LD 36 transmits an image signal and a magnetic field measurement result, which were originally in the form of an electric signal, in the form of an optical signal toward a photodiode (hereinafter referred to as PD) 37 provided in the light source device 11. ..

Although not shown, a small-capacity control signal exchanged between the endoscope 10 and the light source device 11 is converted into an optical signal for both the connector 34 and the light source device 11 separately from the LD36 and PD37. An optical transmission / reception unit for transmitting / receiving is provided. Further, the connector 34 is provided with a power receiving unit (not shown) that receives power by wireless power supply from the power feeding unit (not shown) of the light source device 11.

The light guide 33 in the connector 34 is inserted into the light source device 11. Further, the fluid tube (not shown) in the connector 34 is connected to the air supply / water supply device (not shown) via the light source device 11. As a result, the illumination light, the gas, and the water are supplied to the endoscope 10 from the light source device 11 and the air supply / water supply device, respectively.

The light source device 11 supplies illumination light to the light guide 33 of the endoscope 10 via the connector 34, and supplies gas and water supplied from the air supply / water supply device (not shown) to the fluid tube of the endoscope 10. Supply to (not shown). Further, the light source device 11 receives the optical signal transmitted from the LD 36 by the PD 37, converts the received optical signal into the original image signal which is an electric signal, and the magnetic field measurement result, and then outputs the light signal to the navigation device 12.

A detection coil 55 is provided in the hand marker 50. The detection coil 55 corresponds to a magnetic field detection element that detects the magnetic field MF. Further, the detection coil 55 is an example of an element for position detection. The detection coil 55 is affected by the magnetic field MF generated from the magnetic field generator 13 to generate an induced electromotive force by the action of electromagnetic induction, and the induced current is generated by the induced electromotive force. The value of the induced current generated from the detection coil 55 represents the strength of the magnetic field MF detected by the detection coil 55, and this is the magnetic field measurement result. That is, the magnetic field measurement result means a value corresponding to the magnitude of the induced current representing the strength of the magnetic field MF. The hand marker 50 outputs the magnetic field measurement result to the navigation device 12 via the cable 53.

The navigation device 12 outputs an image signal for generating the observation image 41 input from the light source device 11 to the processor device 14. Further, the navigation device 12 controls the drive of the magnetic field generator 13, detects the shape of the insertion portion 17 in the body of the subject H, the position of the hand marker 50, and the like, and obtains the detection result in the navigation image 42. Is output to the processor device 14 as information for generating the above.

As described above, the endoscope 10 in this example is a one-connector type having one connector 34 connected to the light source device 11. The endoscope 10 is communicably connected to each of the processor device 14 and the navigation device 12 via the light source device 11 to which the connector 34 is connected.

The magnetic field generator 13 has a plurality of generating coils 39 corresponding to a plurality of magnetic field generating elements. Each generating coil 39 includes, for example, an X-axis coil, a Y-axis coil, and a Z-axis coil that generate an AC magnetic field in a direction corresponding to the XYZ coordinate axes of the Cartesian coordinate system XYZ by applying a drive current. Each generating coil 39 generates a magnetic field MF having the same frequency.

[Structure of hand marker]
As shown in FIGS. 3 and 4, the hand marker 50 includes a marker main body 51 and a mounting portion 52. As described above, the marker main body 51 includes a detection coil 55 for magnetic field detection (see FIG. 2) as an example of a position detection element. The mounting portion 52 is a portion on which the fingers of the hand are hung to mount the marker main body 51 on the hand. The mounting portion 52 is provided on the first surface 51a of the marker main body 51.

The marker main body 51 has an elongated shape, and more specifically, has a rounded hornworm shape as a whole. One end of the marker main body 51 in the longitudinal direction has a dome shape, and the other end is provided with a cable 53. The entire circumference of the marker body 51 is chamfered at the corners. R chamfering is a process of rounding corners to make a curved surface. As shown in FIG. 4, when the first surface 51a provided with the mounting portion 52 is the lower surface of the outer peripheral surface of the marker body 51, the marker body 51 is viewed from the side orthogonal to the vertical direction of the marker body 51. When viewed from the side, the outline OL of the marker main body 51 is all formed by a curved line.

Further, in the marker main body 51, of the outer peripheral surface of the marker main body 51, the first surface 51a on which the mounting portion 52 is provided has a central portion convex to the opposite side to the mounting portion 52 with respect to both ends in the longitudinal direction of the marker main body 51. It has an arc shape. Further, in the marker main body 51, the second surface 51b facing the first surface 51a has an arc shape whose central portion is convex on the opposite side to the mounting portion 52 with respect to both ends in the longitudinal direction of the marker main body 51. ing.

A function button 54 is provided on the second surface 51b of the marker main body 51. The function button 54 is a button to which a function such as changing the viewpoint of the display screen is assigned.

The cable 53 is pulled out from one end in the longitudinal direction of the marker main body 51. The marker main body 51 is provided with a cable cover 51d that covers a part of the cable 53. The thickness of the cable 53 is thinner than the thickness of the marker main body 51. The cable cover 51d gradually becomes thinner from the marker main body 51 side toward the lead-out direction of the cable 53. The outer peripheral surface of the cable cover 51d is also formed of a curved surface, and is connected to the outer peripheral surface of the marker main body 51 so as not to cause a step. Reference numeral 51c is a portion where the diameter of the cable cover 51d is reduced, and is a cable drawing portion from which the cable 53 is pulled out in the cable cover 51d.

Further, as shown in FIG. 4, at one end in the longitudinal direction of the marker main body 51, the cable 53 is attached in such a manner that a gap I is generated between the outer peripheral surface 53a of the cable 53 and the first surface 51a of the marker main body 51. Specifically, in this example, the diameter of the cable 53 is smaller than the thickness of the marker main body 51 in the side view of FIG. The cable 53 is attached so that the center of the radial cross section of the cable 53 and the center of the marker body 51 in the vertical direction in FIG. 4 substantially coincide with each other. As a result, a gap I is created between the outer peripheral surface 53a of the cable 53 and the first surface 51a.

Further, the marker main body 51 is made of a resin such as plastic, for example.

The mounting portion 52 is made of an elastomer. Here, the elastomer means a rubber-like elastic body, and includes a thermoplastic elastomer, a thermosetting elastomer, and rubber. Thermosetting elastomers include urethane rubber, silicone rubber, fluororubber and the like.

In this example, the mounting portion 52 is a J-shaped hook having one end fixed to the marker main body 51 and the other end being a free end. In the mounting portion 52, the base end 52a of the hook is attached to the first surface 51a of the marker main body 51, and the base end 52a serves as a fixed end. The mounting portion 52 has a first portion 52b and a second portion 52c. The first portion 52b has a portion extending from the base end 52a in a direction substantially orthogonal to the first surface 51a. The second portion 52c is a portion connected to the first portion 52b and extends in a direction along the first surface 51a. In this example, the connecting portion between the first portion 52b and the second portion 52c is curved. Further, in this example, the second portion 52c extends along the longitudinal direction of the marker main body 51. The tip 52d, which is one end of the second portion 52c, is the tip of the hook and is a free end. There is a space between the tip 52d and the first surface 51a for inserting a finger (see the distance L1 in FIG. 4), and the finger is inserted into the mounting portion 52 from the longitudinal direction of the marker main body 51. It is possible.

In the technique of the present disclosure, the J-shape is a part around the finger by forming a curved portion from the base end 52a, which is an example of a fixed end, to the tip 52d, which is an example of a free end. It means a shape that surrounds and is caught by a finger.

Further, since the mounting portion 52 is a portion that comes into contact with the subject, it is preferable that the outer peripheral surface of the mounting portion 52 is entirely formed of a curved surface, and the corners are chamfered like the marker main body 51.

Further, in the mounting portion 52, the distance L1 between the tip end 52d of the J-shaped hook and the first surface 51a of the marker main body 51 is shorter than the maximum distance L2 between the hook and the first surface 51a. It is configured. That is, by narrowing the distance (corresponding to the distance L1) between the tip end 52d of the hook and the first surface 51a in the mounting portion 52, it becomes difficult for the fingers in the hook to come off when the hook is mounted.

As shown in FIG. 5, when the hand marker 50 is attached to the hand of the assistant MT who is the wearer, the longitudinal direction of the marker main body 51 extends in a direction intersecting the extending direction of the fingers of the wearer's hand. Become. Therefore, as shown in FIG. 5, if the marker main body 51 is attached to the hand in a direction in which the body axis of the wearer's body and the cable 53 do not intersect, the cable 53 can be extended in a direction away from the wearer's body. It becomes.

[Action effect]
The hand marker 50 of the present embodiment is an assistant MT (an example of a person) outside the body of the subject H when displaying the shape of the endoscope 10 inside the body of the subject H on the monitor 15. A hand marker 50 used to display a mark 42b indicating the position of a hand on the monitor 15, and a marker main body 51 having a built-in detection coil 55, which is an example of an element for position detection, and a marker main body 51. The mounting portion 52 is provided with a mounting portion 52 on which the fingers of the hand are hung so that the mounting portion 52 can be mounted on the hand, and the mounting portion 52 is made of an elastomer.

Since the elastomer is more elastic than a hard resin such as plastic, the subject H is less likely to feel uncomfortable even if the mounting portion 52 of the hand marker 50 touches the subject H, and is strong against the mounting portion 52. Hard to break even when force is applied.

Further, the hand marker 50 of the present embodiment has a built-in detection coil 55 for magnetic field detection as an element for detecting the position of the wearer's hand. As a result, it can be incorporated into the endoscope system 1 that images the shape of the insertion portion 17 of the endoscope 10 in the body by using magnetism.

Further, the marker main body 51 of the hand marker 50 of the present embodiment has a marker as shown in FIG. 4 when the first surface 51a on which the mounting portion 52 is provided is the lower surface of the outer peripheral surface of the marker main body 51. When the marker main body 51 is viewed from the side orthogonal to the vertical direction of the main body 51, the outer line OL of the marker main body 51 is all formed by a curved line. Therefore, the hand marker 50 of this example is easier to fit in the hand than the conventional case where the marker main body has a cylindrical shape and the outer line when the marker main body is viewed from the side is a rectangular shape including a straight line portion. In addition, since the shape is rounded as a whole, it is possible to give an impression of appearance that is gentler than before.

Further, among the outer peripheral surfaces of the marker main body 51, the outer surface of the marker main body 51 is viewed from the side orthogonal to the vertical direction of the marker main body 51 with the surface provided with the mounting portion 52 as the lower surface. All lines are made up of curves. As a result, when the marker body 51 of the hand marker 50 becomes dirty, the dirt can be easily wiped off, which is advantageous in terms of hygiene. Further, when the assistant MT inserts the hand wearing the hand marker 50 between the subject H and the sleeper 16, the hand marker 50 is less likely to be caught because there is no corner. This makes it possible to improve workability.

Further, the marker main body 51 of the hand marker 50 has an elongated shape, and the first surface 51a of the marker main body 51 on which the mounting portion 52 is provided is formed on both ends of the marker main body 51 in the longitudinal direction. The central portion has an arc shape that is convex on the opposite side to the mounting portion 52. As a result, when the wearer wears the hand marker 50 on his / her hand, it fits on the back of the hand, so that the wearability can be improved.

Further, the marker body 51 of the hand marker 50 has an elongated shape, and the second surface 51b of the marker body 51 facing the first surface 51a of the marker body 51 on which the mounting portion 52 is provided is the outer peripheral surface of the marker body 51. The central portion of the marker main body 51 has an arc shape that is convex on the opposite side to the mounting portion 52 with respect to both ends in the longitudinal direction. This makes it easier to distinguish between the lower surface (that is, the side to be attached to the hand) and the upper surface (that is, the surface facing the lower surface) of the hand marker 50, so that practicality can be improved.

Further, the mounting portion 52 of the hand marker 50 is a J-shaped hook having one end fixed to the marker main body 51 and the other end being a free end. As a result, the hand marker 50 can be easily attached to the wearer's hand simply by sandwiching the first portion 52b of the hook between the fingers and hooking the finger inside the hook.

Further, since the mounting portion 52 is made of an elastomer, even if the wearer's fingers are thick, for example, the J-shaped hook as the mounting portion 52 spreads according to the thickness of the fingers. Further, even when the J-shaped hook is deformed in this way, since the elastomer is softer than the hard material, the load on the wearer's finger is small. Therefore, by forming the mounting portion 52 with an elastomer, it is possible to flexibly cope with different finger thicknesses for each wearer while suppressing the load applied to the wearer.

Even if the mounting portion is made of a hard material, if the mounting portion is formed to be large, even a wearer with thick fingers can wear the mounting portion, but there are the following problems. That is, if the mounting portion is formed according to the size of a thick finger, the size of the mounting portion will be too large when worn by a wearer with a thin finger. In this case, the mounting portion must be held by, for example, sandwiching the mounting portion with two fingers so that the mounting portion loosely mounted on the finger does not come off from the finger. If this happens, it will be difficult to perform the manual compression procedure, and the fit will be poor. Therefore, by forming the mounting portion 52 with an elastomer as in the technique of the present disclosure, such inconvenience can be eliminated.

Further, the distance L1 between the first surface 51a of the outer peripheral surface of the marker main body 51 where the base end 52a of the hook (that is, the mounting portion 52) is provided and the tip end 52d of the hook is between the hook and the first surface 51a. It is configured to be shorter than the maximum distance L2 of. This makes it possible to prevent the hand marker 50 from coming off the hand when the wearer puts his or her finger on the inside of the hook.

Further, the marker body 51 of the hand marker 50 has an elongated shape, and the tip 52d of the hook extends along the longitudinal direction of the marker body 51. As a result, as shown in FIG. 5, the hand marker 50 can be attached to the wearer's hand in a state where the longitudinal direction of the marker body 51 extends in the direction orthogonal to the wearer's finger.

As shown in FIG. 9 described later, when the marker body 51 is worn in a state where the longitudinal direction of the marker body 51 extends parallel to the wearer's finger, when the wearer bends the finger toward the palm side, the fingertip side of the marker body 51 The end of the is protruding from the hand. In this case, if the end of the protruding marker body 51 on the fingertip side carelessly hits the subject H, the subject H may feel uncomfortable.

On the other hand, when the marker body 51 is mounted in a state in which the longitudinal direction of the marker body 51 extends in a direction orthogonal to the wearer's finger, the end portion of the marker body 51 protrudes toward the fingertip side even if the wearer bends the finger toward the palm side. Yes to do. Therefore, the discomfort of the subject H is reduced. Further, as compared with the wearing posture of FIG. 9, even if the finger is bent toward the palm side, it is easy to maintain the close contact between the marker main body 51 and the wearer's hand, so that workability can be improved.

Further, as shown in FIG. 5, when the hand marker 50 is attached to the wearer's hand while the longitudinal direction of the marker body 51 extends in the direction orthogonal to the wearer's finger, the following merits are also obtained. be. That is, when the wearer wears it in the posture shown in FIG. 9 described later, for example, when the wearer's finger bends to the back side of the hand when the wearer presses the hand, the warped finger and the fingertip side of the marker body 51 The end is easy to hit, and the back of the hand and the end of the marker body 51 on the back of the hand are easy to hit. When the hand marker 50 is mounted in the posture shown in FIG. 5, even if the wearer's fingers bend toward the back of the hand, the end portion of the marker main body 51 does not easily come into contact with the fingers and the back of the hand. Therefore, when the hand marker 50 is attached in the posture shown in FIG. 5, pain is reduced to the wearer and less likely to interfere with the manual compression procedure as compared with the wearing posture shown in FIG. .. Further, when the hand marker 50 is worn in the posture shown in FIG. 5, the wearer is less likely to unnaturally put a force on the finger in order to avoid pain, as compared with the wearing posture shown in FIG. Therefore, it also leads to a reduction in the burden on the subject H.

Further, the marker main body 51 of the hand marker 50 has an elongated shape and is connected to the cable 53, and the cable 53 is pulled out from one end in the longitudinal direction of the marker main body 51. As a result, the cable 53 is pulled out along the longitudinal direction of the marker main body 51, so that the cable 53 to the marker main body 51 are lined up in an elongated straight line, and the usability can be improved. In particular, when the marker body 51 is mounted in a state in which the longitudinal direction of the marker body 51 extends in a direction orthogonal to the wearer's finger, the cable 53 can be extended in a direction away from the wearer's body, so that the feeling of use is further improved. Can be improved.

Further, the cable 53 is connected to the marker main body 51 of the hand marker 50, and the cable 53 is pulled out from a position where a distance I is generated between the outer peripheral surface 53a of the cable 53 and the first surface 51a of the marker main body 51. There is.

As a result, as shown in FIG. 6, even when the hand on which the hand marker 50 is attached is in contact with the bed 16, for example, and the inclination of the palm is changed with the cable extraction portion 51c side of the marker main body 51 as a fulcrum, the cable is used. The distance from the drawer portion 51c until the cable 53 comes into contact with the bed 16 can be extended.

Therefore, as compared with the case where the cable 53 is pulled out in a state where the first surface 51a of the marker main body 51 and the outer peripheral surface 53a of the cable 53 are continuous without providing the interval I, the cable 53 can be suppressed from being sharply bent. The risk of damage to 53 can be reduced.

"Transformation example"
The technique of the present disclosure can also appropriately combine the above-described embodiment with various modifications.

For example, as shown in FIG. 7, the mounting portion 56 of the hand marker 50A may be a T-shaped hook. Specifically, in the mounting portion 56, the base end 56a of the hook is attached to the first surface 51a of the marker main body 51, and the base end 56a is a fixed end. The mounting portion 56 includes a first portion 56b and two second portions 56c and a second portion 56d that are bifurcated from the first portion 56b and on which the wearer's fingers are hung.

Further, as shown in FIG. 8, a rotation mechanism 57 for rotating the mounting portion 52 with respect to the marker main body 51 of the hand marker 50B may be provided. As a result, the wearer can extend the tip 52d of the mounting portion 52, which is a hook, along the longitudinal direction of the marker main body 51, and the mounting portion 52, which is a hook along the direction orthogonal to the longitudinal direction of the marker main body 51. The state in which the tip 52d of the head is extended can be arbitrarily switched.

Assuming that the tip 52d of the hook extends along the direction orthogonal to the longitudinal direction of the marker main body 51, as shown in FIG. 9, when the hand marker 50B is attached to the wearer's hand, the marker main body 51 The longitudinal direction extends in the direction orthogonal to the wearer's finger. Further, the cable 53 pulled out from one end in the longitudinal direction of the marker main body 51 is in a state of extending along the wearer's arm.

Further, as shown in FIG. 10, the wireless communication unit 58 may be built in the marker main body 51 of the hand marker 50C. The wireless communication unit 58 wirelessly communicates with the navigation device 12, and includes, for example, a wireless communication module composed of an electric circuit for performing wireless communication and an antenna for transmitting and receiving radio waves. With such an embodiment, a cable for connecting the hand marker 50C and the navigation device 12 is not required, so that convenience can be improved.

Further, in the endoscope system 1, contrary to the above embodiment, the endoscope 10 and the hand marker 50C have a built-in coil for generating a magnetic field, and the navigation device 12 is connected to the magnetic field detector. The insertion state of the insertion portion 17 of the endoscope 10 and the position of the hand marker 50 may be detected.

Further, the position detection element built in the marker body of the hand marker does not have to be a coil for magnetic field generation or magnetic field detection. For example, indoor object positioning technology includes a technology that uses a wireless LAN (Local Area Network) access point, in addition to a technology that uses magnetism. When using an access point, the antenna that communicates with the access point is the element for position detection.

Further, although a human being has been described as an example as a subject, the subject also includes a living body other than a human such as an animal.

The contents described and illustrated above are detailed explanations of the parts related to the technique of the present disclosure, and are merely an example of the technique of the present disclosure. For example, the description of the configuration, function, action, and effect described above is an example of the configuration, function, action, and effect of a portion of the art of the present disclosure. Therefore, unnecessary parts may be deleted, new elements may be added, or replacements may be made to the above-mentioned description contents and illustration contents within the range not deviating from the gist of the technique of the present disclosure. Needless to say. In addition, in order to avoid complications and facilitate understanding of the parts relating to the technology of the present disclosure, the contents described above and the contents shown above require special explanation in order to enable the implementation of the technology of the present disclosure. Explanations regarding common technical knowledge, etc. are omitted.

All documents, patent applications and technical standards described herein are to the same extent as if it were specifically and individually stated that the individual documents, patent applications and technical standards are incorporated by reference. Incorporated by reference in the book.

1 Endoscope system 10 Endoscope 11 Light source device 12 Navigation device 13 Magnetic field generator 14 Processor device 15 Monitor 16 Sleeper 16A Top surface 17 Insertion part 18 Operation part 19 Universal cord 21 Flexible part 22 Curved part 23 Tip part 25 Each detection Coil 25 Detection coil 27 Curved operation knob 28 Air supply / water supply button 29 Suction button 31 Treatment tool introduction port 32 Signal cable 33 Light guide 34 Connector 39 Generated coil 41 Observation image 42 Navigation image 42a Insertion part image 42b Mark 50, 50A, 50B, 50C Hand marker 51 Marker body 51a First side 51b Second side 51c Cable drawer 51d Cable cover 52 Mounting part 52a Base end 52b First part 52c Second part 52d Tip 53 Cable 53a Outer surface 54 Function button 55 Detection coil 56 mounting Part 56a Base end 56b First part 56c, 56d Second part 57 Rotating mechanism 58 Radio communication part H Subject I Interval L1 Distance L2 Distance MF Magnetic field MT Assistant OL Outline OP Operator

Claims (12)

A hand marker used to display a mark indicating the position of a person's hand outside the body of the subject on the monitor when displaying the shape of the endoscope inside the body of the subject on the monitor.
A marker body with a built-in element for position detection and
A hand marker including a mounting portion on which the fingers of the hand are hung for mounting the marker body on the hand, and a mounting portion made of an elastomer. The hand marker according to claim 1, wherein the element for position detection is a coil for generating a magnetic field or detecting a magnetic field. When the surface on which the mounting portion is provided is the lower surface of the outer peripheral surface of the marker body,
The hand marker according to claim 1 or 2, wherein when the marker body is viewed from the side orthogonal to the vertical direction of the marker body, the outlines of the marker body are all formed by curves. The marker body has an elongated shape, and the first surface of the outer peripheral surface of the marker body on which the mounting portion is provided has a central portion opposite to the mounting portion with respect to both ends in the longitudinal direction of the marker body. The hand marker according to claim 3, which has a convex arc shape. The marker body has an elongated shape, and the second surface of the outer peripheral surface of the marker body facing the first surface on which the mounting portion is provided has a central portion with respect to both ends in the longitudinal direction of the marker body. The hand marker according to claim 4, which has an arc shape that is convex on the side opposite to the mounting portion. The hand marker according to any one of claims 1 to 5, wherein the mounting portion is a J-shaped hook having one end fixed to the marker body and the other end being a free end. According to claim 6, the distance between the first surface of the outer peripheral surface of the marker body on which the base end of the hook is provided and the tip of the hook is shorter than the maximum distance between the hook and the first surface. The described hand marker. The hand marker according to claim 6 or 7, wherein the marker body has an elongated shape and the tip of the hook extends along the longitudinal direction of the marker body. The hand marker according to any one of claims 1 to 8, wherein the marker main body has an elongated shape, a cable is connected to the marker main body, and the cable is pulled out from one end in the longitudinal direction of the marker main body. From claim 1, a cable is connected to the marker body, and the cable is pulled out from a position where a gap is formed between the outer peripheral surface of the cable and the first surface of the marker body facing the hand. The hand marker according to any one of 9. The hand marker according to any one of claims 1 to 8, wherein a wireless communication unit is built in the marker body. The hand marker according to any one of claims 1 to 11, further comprising a rotation mechanism for rotating the mounting portion with respect to the marker main body.

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