JP7346367B2 - hand marker - Google Patents

Description

The present disclosure relates to hand markers.

Endoscopes for observing the inside of a subject such as a patient are known. In examinations using an endoscope, the lower digestive tract such as the large intestine is observed in addition to the upper digestive tract such as the esophagus. The lower gastrointestinal tract is complexly curved, unlike the upper gastrointestinal tract, which extends relatively straight. When an endoscope is inserted into the lower gastrointestinal tract, the insertion portion of the endoscope is also complicatedly curved. In order to ascertain the shape of the insertion section of an endoscope inserted into the body of a subject, an endoscope shape detection device is known that detects the shape of the insertion section of the endoscope inside the body of the subject. ing.

The endoscope shape detection device has the function of imaging the shape of the insertion section based on the acquired information by using, for example, magnetism to obtain information for imaging the shape of the insertion section inside the body. We are prepared. For example, a plurality of magnetic field generating elements are arranged at intervals within an insertion section of an endoscope. The endoscope shape detection device detects the magnetic field generated by each magnetic field generating element within the insertion section using a magnetic field detecting element placed outside the body of the subject. The strength of the detected magnetic field of each magnetic field generating element represents the position of each part of the insertion section with respect to the magnetic field detecting element outside the subject's body. The information is used as information for imaging the shape of the insertion portion to generate an image showing the shape of the insertion portion. The generated image is then displayed on a monitor and presented to a user such as a surgeon.

In addition, since the procedure of inserting an endoscope into the complexly curved lower gastrointestinal tract may be difficult for a single operator, assistants such as nurses assist the surgeon in inserting the endoscope. There are cases. The assistant touches the subject's abdomen to confirm the position of the endoscope's insertion site, and applies manual pressure to the lower digestive tract from outside the subject's body to facilitate insertion of the endoscope. .

As described in Patent Documents 1 and 2, a hand marker is sometimes 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 subject's body on the monitor when displaying the shape of the endoscope inside the subject's body on the monitor. The hand marker has a built-in magnetic field generating element, similar to, for example, an endoscope. The endoscope shape detection device detects the position of a hand marker by detecting a magnetic field generated by the hand marker. Since the hand marker is worn on the hand of the assistant, the mark indicating the detected 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. Thereby, it is possible to grasp the relative positional relationship between the position of the assistant's hand outside the subject's body and the insertion portion of the endoscope inside the subject's body (for example, see Patent Documents 1 and 2).

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

A hand marker includes a marker body with a built-in element for position detection such as a magnetic field generating element, and an attachment part for attaching the marker body to a person's hand, on which the fingers of the hand can be hung. There is. The hand marker is worn on the hand with the user's fingers hooked onto the attachment portion and the marker body placed on the back of the hand.

A part of the attachment part that is placed on the finger wraps around the palm side of the hand, so when performing manual compression on the subject, a part of the attachment part comes into contact with the subject. In that case, there was a risk that the subject would feel uncomfortable. Furthermore, if manual compression is performed with strong force, there is a risk that strong force will be applied to the mounting part and the mounting part will be damaged.

The hand markers described in Patent Documents 1 and 2 neither suggest nor disclose such problems and countermeasures.

An object of the technology of the present disclosure is to provide a hand marker in which a subject is less likely to feel uncomfortable even when the attached portion of the hand marker touches the subject, and the attached portion is less likely to be damaged.

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

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

In addition, when the surface of the outer peripheral surface of the marker body on which the attachment part is provided is the bottom surface, and when the marker body is viewed from the side perpendicular to the vertical direction of the marker body, the outline of the marker body is Preferably, they are all curved.

In addition, the marker body has an elongated shape, and the first surface of the outer circumferential surface of the marker body, on which the attachment portion is provided, has a central portion that is convex on the side opposite to the attachment portion with respect to both ends in the longitudinal direction of the marker body. It is preferable to have a circular arc shape.

Further, the marker body has an elongated shape, and the second surface of the outer circumferential surface of the marker body, which is opposite to the first surface on which the attachment portion is provided, has a central portion with respect to both ends in the longitudinal direction of the marker body, where the attachment portion is provided. Preferably, it has an arcuate shape that is convex on the opposite side.

Moreover, it is preferable that the attachment part is a J-shaped hook with one end serving as a fixed end fixed to the marker body and the other end serving as a free end.

Moreover, it is preferable that the distance between the first surface of the outer circumferential surface of the marker body, where the proximal 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 that the tip of the hook extends along the longitudinal direction of the marker body.

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

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

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

Further, the marker may include a rotation mechanism that rotates the mounting portion with respect to the marker body.

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

FIG. 2 is an explanatory diagram showing a state of endoscopy using an endoscope system. FIG. 1 is a schematic diagram showing the overall configuration 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 showing the state where a hand marker is attached to a hand. FIG. 3 is a diagram showing a state in which a hand marker is attached to the hand and the hand is tilted. It is a side view of a hand marker. It is a bottom view of a hand marker. It is a figure showing the state where a hand marker is attached to a hand. It is a side view of a hand marker.

[Overall configuration of endoscope system]
FIG. 1 is a schematic diagram showing the overall configuration of an endoscope system 1 including an endoscope shape display control device according to the technology 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, Equipped with. The endoscope system 1 is used for endoscopic examination of the body of a subject H. Subject H is an example of a subject. The endoscope 10 is, for example, an endoscope that is inserted into a gastrointestinal tract such as a large intestine, and is a flexible endoscope. The endoscope 10 includes an insertion section 17 that is inserted into the gastrointestinal tract, an operation section 18 that is connected to the proximal end of the insertion section 17 and that is grasped by the operator to perform various operations, and an operation section 18 that is connected to the operation section 18. It has a universal code 19.

The endoscopy is performed, for example, with the subject H lying on the top surface 16A of the bed 16. In the case of a colon examination, the insertion section 17 of the endoscope 10 is inserted into the lower gastrointestinal tract through the anus by the operator OP, who is a doctor.

The assistant MT assists the operator OP in inserting the insertion section 17 of the endoscope 10 into the body. With the hand marker 50 attached to their hand, the assistant MT touches the abdomen of the subject H to confirm the position of the insertion section 17 of the endoscope 10, or inserts the lower gastrointestinal tract from outside the subject H's body. Manual compression is performed to facilitate insertion of the insertion section 17 of the endoscope 10. Hand marker 50 is connected to navigation device 12 via cable 53. The hand of the assistant MT is an example of a human hand 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 an observation image 41 by processing the image captured by the endoscope 10. Observation image 41 is displayed on monitor 15.

The operator OP proceeds with the endoscopy while checking the observation image 41. The observation image 41 displayed on the monitor 15 is basically a moving image, but a still image can also be displayed as the observation image 41 if necessary.

The endoscope system 1 also includes a navigation function for navigating the insertion procedure of the endoscope 10 performed by the operator OP. Here, navigation refers to the insertion state of the endoscope 10 including the position and shape of the insertion section 17 in the body of the subject H to the operator OP and the assistant MT. This means supporting the insertion procedure of the endoscope 10. Further, the navigation can present the position of the hand of the assistant MT wearing the hand marker 50 together with the insertion state of the insertion section 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 a stand, for example, and placed beside the bed 16 on which the subject H lies. Further, the magnetic field generator 13 is placed within a range where the generated magnetic field MF can reach the inside of the subject H's body.

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

The monitor 15 displays an observation image 41 and a navigation image 42. Note that monitors 15 for displaying the observation image 41 and the navigation image 42 may be provided separately.

As shown in FIG. 2, the insertion section 17 of the endoscope 10 is a long and narrow tubular section, and includes, in order from the proximal end to the distal end, a flexible section 21, a curved section 22, The tip portion 23 is connected to the tip portion 23. The soft portion 21 has flexibility. The bending portion 22 is a portion that can be bent by operating the operating portion 18 . An imaging device (not shown) and the like are arranged at the distal end portion 23 .

Although not shown in FIG. 2, the distal end surface of the distal end portion 23 has an illumination window that illuminates the observation region with illumination light, an observation window through which the subject light reflected by the illumination light from the subject enters, and a treatment tool protruding. A treatment instrument outlet for cleaning the observation window and a cleaning nozzle for cleaning the observation window by spraying gas and water onto the observation window are provided.

Inside the insertion section 17, a light guide 33, a signal cable 32, an operating wire (not shown), and a conduit (not shown) for inserting a treatment tool are provided. The light guide 33 extends from the universal cord 19 and guides illumination light supplied from the light source device 11 to the illumination window of the distal end portion 23 . The signal cable 32 is used for communicating image signals from the imaging device and control signals for controlling the imaging device, as well as for supplying power to the imaging device. Similarly to the light guide 33, the signal cable 32 also extends from the universal cord 19 and is disposed up to the tip end 23.

The operation wire is a wire for operating the bending section 22 and is disposed between the operation section 18 and the bending section 22. The treatment instrument insertion channel is a channel for inserting a treatment instrument such as forceps, and is arranged from the operating section 18 to the distal end section 23. In addition, a fluid tube for air and water supply is provided inside the insertion portion 17. The fluid tube supplies the tip 23 with gas and water for cleaning the viewing window.

Furthermore, inside the insertion section 17, a plurality of detection coils 25 are provided at preset intervals from the flexible section 21 to the distal end section 23. Each detection coil 25 corresponds to a magnetic field detection element that detects the magnetic field MF. Each detection coil 25 is influenced by the magnetic field MF generated from the magnetic field generator 13, and thereby generates an induced electromotive force due to the action of electromagnetic induction, and generates an induced current due to 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 becomes the magnetic field measurement result. That is, the magnetic field measurement result refers to a value corresponding to the magnitude of the induced current representing the strength of the magnetic field MF.

The operating section 18 is provided with various operating members that are operated by the operator. Specifically, the operation unit 18 is provided with two types of bending operation knobs 27, an air/water supply button 28, and a suction button 29. The two types of bending operation knobs 27 are each connected to an operation wire, and are used for left/right bending operations and up/down bending operations of the bending section 22 . Further, the operating section 18 is provided with a treatment instrument introduction port 31 that is an entrance of a conduit for inserting the treatment instrument.

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). Furthermore, 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 power, control signals, illumination light, gas, and water necessary for operating the endoscope 10. Further, an image signal of the observed region acquired by the imaging device of the distal end portion 23 and a 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 the light source device 11 using a metal signal line or the like; instead, the connector 34 and the light source device 11 are connected through optical communication (i.e., non-contact communication). communicable connection). The connector 34 transmits and receives control signals exchanged between the endoscope 10 and the light source device 11, and transmits image signals and magnetic field measurement results from the endoscope 10 to the light source device 11 through 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 large amounts of data from the endoscope 10 to the light source device 11, specifically for transmitting image signals and magnetic field measurement results. The LD 36 transmits image signals and magnetic field measurement results, which were originally in the form of electrical signals, in the form of optical signals to a photodiode (hereinafter referred to as PD) 37 provided in the light source device 11. .

Although not shown in the drawings, in addition to the LD 36 and the PD 37, both the connector 34 and the light source device 11 have a device that converts small-capacity control signals exchanged between the endoscope 10 and the light source device 11 into optical signals. An optical transmitting/receiving section is provided for transmitting and receiving signals. Furthermore, the connector 34 is provided with a power receiving section (not shown) that receives power from the power feeding section (not shown) of the light source device 11 by wireless power feeding.

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

A detection coil 55 is provided inside 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 a position detection element. The detection coil 55 is influenced by the magnetic field MF generated from the magnetic field generator 13, and thereby generates an induced electromotive force due to the action of electromagnetic induction, and generates an induced current due to 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 becomes the magnetic field measurement result. That is, the magnetic field measurement result refers to 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 results to the navigation device 12 via the cable 53.

The navigation device 12 outputs the image signal for generating the observation image 41, which is input from the light source device 11, to the processor device 14. The navigation device 12 also 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, etc., and uses the detection results in the navigation image 42. The information is output to the processor device 14 as information for generating the information.

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 alternating current magnetic fields in directions corresponding to the XYZ coordinate axes of the orthogonal coordinate system XYZ by applying a drive current. Each generating coil 39 generates a magnetic field MF of the same frequency.

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

The marker main body 51 has an elongated shape, and more specifically, it has an overall rounded caterpillar shape. One longitudinal end of the marker body 51 has a dome shape, and a cable 53 is provided at the other end. The corners of the entire circumference of the marker body 51 are rounded. R-chamfering refers to the process of rounding corners to create a curved surface. As shown in FIG. 4, when the first surface 51a of the outer peripheral surface of the marker body 51 on which the mounting portion 52 is provided is the lower surface, the marker body 51 is inserted from the side perpendicular to the vertical direction of the marker body 51. When viewed from the side, the outline line OL of the marker body 51 is entirely formed in a curved line.

In addition, in the marker body 51, a first surface 51a on which the attachment portion 52 is provided among the outer circumferential surface of the marker body 51 has a central portion that is convex on the side opposite to the attachment portion 52 with respect to both ends of the marker body 51 in the longitudinal direction. It has an arc shape. Furthermore, in the marker body 51, the second surface 51b opposite to the first surface 51a has an arc shape with a central portion convex on the side opposite to the mounting portion 52 with respect to both longitudinal ends of the marker body 51. ing.

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

A cable 53 is pulled out from one end of the marker body 51 in the longitudinal direction. The marker body 51 is provided with a cable cover 51d that covers a portion of the cable 53. The thickness of the cable 53 is thinner than the thickness of the marker body 51. The cable cover 51d gradually becomes thinner from the marker body 51 side toward the direction in which the cable 53 is pulled out. The outer circumferential surface of the cable cover 51d is also formed as a curved surface, and is connected to the outer circumferential surface of the marker body 51 so that there is no step. Reference numeral 51c indicates a portion where the cable cover 51d has a narrow diameter, and is a cable pull-out portion from which the cable 53 is pulled out.

Further, as shown in FIG. 4, the cable 53 is attached at one longitudinal end of the marker body 51 in such a manner that a distance I is created between the outer peripheral surface 53a of the cable 53 and the first surface 51a of the marker body 51. Specifically, in this example, the diameter of the cable 53 is smaller than the thickness of the marker 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 substantially coincides with the vertical center of the marker body 51 in FIG. This creates a gap I between the outer circumferential surface 53a of the cable 53 and the first surface 51a.

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

The mounting portion 52 is made of elastomer. Here, elastomer means a rubber-like elastic body, and includes thermoplastic elastomer, 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 with one end serving as a fixed end fixed to the marker body 51 and the other end serving as a free end. In the mounting portion 52, a proximal end 52a of the hook is attached to the first surface 51a of the marker body 51, and the proximal 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 perpendicular to the first surface 51a. The second portion 52c is connected to the first portion 52b and extends in the direction along the first surface 51a. In this example, the connecting portion between the first portion 52b and the second portion 52c is curved. Moreover, the second portion 52c extends along the longitudinal direction of the marker body 51 in this example. The tip 52d, which is one end of the second portion 52c, is the tip of a hook and is a free end. There is a gap between the tip 52d and the first surface 51a for inserting a finger (see distance L1 in FIG. 4), and the finger can be inserted into the mounting portion 52 from the longitudinal direction of the marker body 51. It is now possible.

In the technology of the present disclosure, the J-shape refers to a portion of the circumference of the finger that is formed by forming a curved portion between the base end 52a, which is an example of a fixed end, and the tip 52d, which is an example of a free end. It means a shape that surrounds and gets caught on the finger.

Moreover, since the mounting part 52 is a part that comes into contact with the subject, it is preferable that the entire outer circumferential surface of the mounting part 52 is formed as a curved surface, and that the corners are rounded like the marker body 51.

Further, in the mounting portion 52, the distance L1 between the tip 52d of the J-shaped hook and the first surface 51a of the marker 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 52d of the hook and the first surface 51a in the mounting portion 52, it becomes difficult for the finger inside the hook to slip out when the device is mounted.

As shown in FIG. 5, when the hand marker 50 is worn on the hand of the assistant MT who is the wearer, the longitudinal direction of the marker body 51 extends in the direction that intersects the direction in which the fingers of the wearer's hand extend. Become. Therefore, as shown in FIG. 5, if the marker body 51 is worn on 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 the direction away from the wearer's body. becomes.

[Effect]
The hand marker 50 of this embodiment is used when displaying the shape of the endoscope 10 inside the body of the subject H on the monitor 15. A hand marker 50 is used to display a mark 42b indicating the position of a hand on the monitor 15, and includes a marker body 51 having a built-in detection coil 55, which is an example of a position detection element, and a marker body 51. It has a mounting part 52 on which the fingers of the hand can be hung in order to wear it on the hand, and the mounting part 52 is made of elastomer.

Elastomers are more elastic than hard resins such as plastics, so even if the mounting part 52 of the hand marker 50 touches the subject H, the subject H is less likely to feel uncomfortable, and the elastomer is strong against the mounting part 52. Resistant to damage even when force is applied.

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

Further, the marker body 51 of the hand marker 50 of the present embodiment has a marker body 51, as shown in FIG. When the marker body 51 is viewed from the side perpendicular to the vertical direction of the body 51, the outline OL of the marker body 51 is entirely curved. Therefore, the hand marker 50 of this example fits easily in the hand compared to the conventional marker body which has a cylindrical shape and whose outline when viewed from the side is a rectangular shape including a straight line portion. In addition, since the overall shape is rounded, the exterior gives a gentler impression than conventional ones.

Furthermore, the outer circumference of the marker body 51 when viewed from the side perpendicular to the vertical direction of the marker body 51 with the surface on which the mounting portion 52 is provided as the bottom surface of the outer circumferential surface of the marker body 51. All lines are formed by curves. This makes it easier to wipe off the dirt when the marker body 51 of the hand marker 50 becomes dirty, which is advantageous in terms of hygiene. Further, when the assistant MT inserts the hand equipped with the hand marker 50 between the subject H and the bed 16, the hand marker 50 is less likely to get caught because there are no corners. Thereby, workability can be improved.

Furthermore, the marker body 51 of the hand marker 50 has an elongated shape, and the first surface 51a of the marker body 51 on which the mounting portion 52 is provided among the outer circumferential surfaces of the marker body 51 is located at both ends of the marker body 51 in the longitudinal direction. The center part has an arcuate shape with a convexity on the side opposite to the mounting part 52. Thereby, when the wearer wears the hand marker 50 on his/her hand, it fits on the back of the hand, thereby improving wearability.

Further, the marker body 51 of the hand marker 50 has an elongated shape, and the second surface 51b of the marker body 51, which faces the first surface 51a of the marker body 51 on which the mounting portion 52 is provided, of the outer circumferential surface of the marker body 51, The marker main body 51 has an arcuate shape with a central portion convex on the side opposite to the mounting portion 52 with respect to both ends in the longitudinal direction. This makes it easier to distinguish between the lower surface (i.e., the side worn on the hand) and the upper surface (i.e., the surface facing the lower surface) of the hand marker 50, thereby improving practicality.

The mounting portion 52 of the hand marker 50 is a J-shaped hook with one end serving as a fixed end fixed to the marker body 51 and the other end serving as a free end. Thereby, the hand marker 50 can be easily attached to the wearer's hand by simply holding 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 elastomer, even if the wearer has thick fingers, for example, a J-shaped hook as the mounting portion 52 will expand to match the thickness of the finger. Furthermore, even when the J-shaped hook is deformed in this way, since the elastomer is softer than a hard material, less load is placed on the wearer's fingers. Therefore, by forming the mounting portion 52 from an elastomer, it is possible to flexibly accommodate the different finger thicknesses of each wearer while suppressing the load on the wearer.

Note that even if the mounting portion is made of a hard material, if the mounting portion is made larger, even a wearer with thick fingers can wear the device, but this poses the following problem. That is, if the mounting portion is formed to fit the size of a thick finger, the size of the mounting portion will be too large when worn by a wearer with thin fingers. In this case, in order to prevent the attachment part that is loosely attached to the finger from coming off the finger, the attachment part must be held by, for example, holding the attachment part between two fingers. This makes it difficult to perform manual compression techniques and also makes it uncomfortable to wear. Therefore, by forming the mounting portion 52 from an elastomer as in the technique of the present disclosure, these inconveniences can be resolved.

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

Further, the marker body 51 of the hand marker 50 has an elongated shape, and a hook tip 52d extends along the longitudinal direction of the marker body 51. Thereby, as shown in FIG. 5, the hand marker 50 can be worn on the wearer's hand with the longitudinal direction of the marker body 51 extending in a direction perpendicular to the wearer's fingers.

As shown in FIG. 9, which will be described later, when the marker body 51 is worn with the longitudinal direction extending parallel to the wearer's fingers, when the wearer bends the fingers toward the palm, the fingertip side of the marker body 51 The end of the handle will protrude from your hand. In this case, if the end of the protruding marker body 51 on the fingertip side accidentally hits the subject H, the subject H may feel uncomfortable.

On the other hand, if the marker body 51 is worn with the longitudinal direction extending perpendicularly to the wearer's fingers, the end of the marker body 51 will protrude toward the fingertips even if the wearer bends the fingers toward the palm. Yes to do. Therefore, the discomfort of the subject H is reduced. Further, compared to the wearing posture shown in FIG. 9, it is easy to maintain close contact between the marker body 51 and the wearer's hand even if the fingers are bent toward the palm side, so that workability can be improved.

In addition, as shown in FIG. 5, when the hand marker 50 is worn on the wearer's hand with the longitudinal direction of the marker body 51 extending in a direction perpendicular to the wearer's fingers, the following advantages can also be obtained. be. That is, when worn in the posture shown in FIG. 9, which will be described later, for example, when the wearer performs manual compression, if the wearer's fingers curve toward the back of the hand, the curved fingers and the fingertip side of the marker body 51 The end of the marker body 51 easily comes into contact with each other, and the back of the hand easily comes into contact with the end of the marker body 51 on the back of the hand side. When the hand marker 50 is worn in the posture shown in FIG. 5, even if the wearer's fingers curve toward the back of the hand, the ends of the marker body 51 are unlikely to come into contact with the fingers or the back of the hand. Therefore, when the hand marker 50 is worn in the posture shown in FIG. 5, compared to the wearing posture shown in FIG. 9, it causes less pain to the wearer and less interferes with the manual compression technique. . Furthermore, when the hand marker 50 is worn in the posture shown in FIG. 5, compared to the wearing posture shown in FIG. 9, the wearer is less likely to unnaturally put pressure on the fingers to avoid pain. This also leads to a reduction in the burden on the subject H.

Further, the marker body 51 of the hand marker 50 has an elongated shape, and is connected to a cable 53. The cable 53 is drawn out from one end of the marker body 51 in the longitudinal direction. As a result, the cable 53 is pulled out along the longitudinal direction of the marker body 51, so that the cable 53 and the marker body 51 are arranged in an elongated straight line, improving the usability. In particular, when the marker body 51 is worn with the longitudinal direction extending perpendicularly to the wearer's fingers, the cable 53 can be extended in the direction away from the wearer's body, making it easier to use. can be improved.

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

As a result, as shown in FIG. 6, even if the hand equipped with the hand marker 50 is in contact with the bed 16 and the inclination of the palm is changed using the cable pull-out portion 51c side of the marker body 51 as a fulcrum, the cable The distance from the pull-out portion 51c until the cable 53 contacts the bed 16 can be extended.

Therefore, compared to the case where the cable 53 is pulled out with the first surface 51a of the marker body 51 and the outer peripheral surface 53a of the cable 53 continuous without providing the interval I, it is possible to suppress the sudden bending of the cable 53. 53 can be reduced.

"Variation"
The technology of the present disclosure can also be combined with the above-described embodiments and various modifications as appropriate.

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, a proximal end 56a of the hook is attached to the first surface 51a of the marker body 51, and the proximal end 56a serves as a fixed end. The mounting portion 56 includes a first portion 56b, and a second portion 56c and a second portion 56d that are bent into two parts from the first portion 56b and on which the wearer's fingers can be hung.

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

Assuming that the tip 52d of the hook extends along the direction perpendicular to the longitudinal direction of the marker body 51, as shown in FIG. The longitudinal direction extends in a direction perpendicular to the wearer's fingers. Further, the cable 53 pulled out from one longitudinal end of the marker body 51 is in a state of extending along the wearer's arm.

Furthermore, as shown in FIG. 10, a wireless communication section 58 may be built into the marker 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 configured of an electric circuit for wireless communication and an antenna for transmitting and receiving radio waves. By adopting such an aspect, a cable connecting the hand marker 50C and the navigation device 12 becomes unnecessary, so that convenience can be improved.

Moreover, contrary to the above embodiment, the endoscope system 1 has a built-in coil for generating a magnetic field in the endoscope 10 and the hand marker 50C, and connects a magnetic field detector to the navigation device 12, thereby allowing internal The insertion state of the insertion section 17 of the endoscope 10 and the position of the hand marker 50 may also be detected.

Further, the position detection element built into the marker body of the hand marker does not have to be a coil for generating or detecting a magnetic field. For example, techniques for positioning objects indoors include techniques that utilize magnetism, as well as techniques that utilize wireless LAN (Local Area Network) access points. When using an access point, the antenna that communicates with the access point serves as a position detection element.

Further, although the description has been made using a human as an example of a subject, the subject also includes living organisms other than humans such as animals.

The descriptions and illustrations described above are detailed explanations of portions related to the technology of the present disclosure, and are merely examples of the technology of the present disclosure. For example, the above description regarding the configuration, function, operation, and effect is an example of the configuration, function, operation, and effect of the part related to the technology of the present disclosure. Therefore, unnecessary parts may be deleted, new elements may be added, or replacements may be made to the written and illustrated contents shown above without departing from the gist of the technology of the present disclosure. Needless to say. In addition, in order to avoid confusion and facilitate understanding of the parts related to the technology of the present disclosure, the descriptions and illustrations shown above do not include parts that require particular explanation in order to enable implementation of the technology of the present disclosure. Explanations regarding common technical knowledge, etc. that do not apply are omitted.

All documents, patent applications and technical standards mentioned herein are incorporated herein by reference to the same extent as if each individual document, patent application and technical standard was specifically and individually indicated to be incorporated by reference. Incorporated by reference into this book.

1 Endoscope system 10 Endoscope 11 Light source device 12 Navigation device 13 Magnetic field generator 14 Processor device 15 Monitor 16 Bed 16A Top surface 17 Insertion section 18 Operation section 19 Universal cord 21 Flexible section 22 Curved section 23 Tip section 25 Each detection Coil 25 Detection coil 27 Curving operation knob 28 Air/water supply button 29 Suction button 31 Treatment instrument inlet 32 Signal cable 33 Light guide 34 Connector 39 Generating coil 41 Observation image 42 Navigation image 42a Insertion part image 42b Marks 50, 50A, 50B, 50C hand marker 51 Marker body 51a First surface 51b Second surface 51c Cable pull-out portion 51d Cable cover 52 Mounting portion 52a Base end 52b First portion 52c Second portion 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 Rotation mechanism 58 Wireless 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 for displaying 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,
A hand marker comprising: a mounting part on which the fingers of the hand are hung in order to wear the marker main body on the hand, and the mounting part is made of elastomer. The hand marker according to claim 1, wherein the position detection element is a coil for generating or detecting a magnetic field. When the surface of the outer circumferential surface of the marker main body on which the mounting portion is provided is the bottom surface,
3. The hand marker according to claim 1, wherein when the marker body is viewed from the side perpendicular to the vertical direction of the marker body, all outlines of the marker body are formed in curved lines. The marker body has an elongated shape, and a first surface of the outer circumferential surface of the marker body on which the attachment portion is provided has a center portion on the opposite side from the attachment portion with respect to both ends in the longitudinal direction of the marker body. The hand marker according to claim 3, having a convex arc shape. The marker main body has an elongated shape, and a second surface of the outer circumferential surface of the marker main body, which faces 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 main body. The hand marker according to claim 4, having an arcuate shape convex on the side opposite to the mounting part. The hand marker according to any one of claims 1 to 5, wherein the mounting portion is a J-shaped hook with one end serving as a fixed end fixed to the marker body and the other end serving as a free end. According to claim 6, a distance between a first surface of the outer circumferential surface of the marker body where the proximal end of the hook is provided and a tip of the hook is shorter than a maximum distance between the hook and the first surface. Hand marker as described. 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 body has an elongated shape and is connected to a cable, and the cable is pulled out from one longitudinal end of the marker body. A cable is connected to the marker body, and the cable is pulled out from a position where a gap is created between the outer peripheral surface of the cable and the first surface of the marker body facing the hand. 9. The hand marker according to any one of 9. The hand marker according to any one of claims 1 to 8, wherein the marker main body has a built-in wireless communication section. The hand marker according to any one of claims 1 to 11, further comprising a rotation mechanism that rotates the mounting portion with respect to the marker main body.