WO2020059838A1

WO2020059838A1 - Medical marker

Info

Publication number: WO2020059838A1
Application number: PCT/JP2019/036881
Authority: WO
Inventors: 重之尾崎
Original assignee: 重之尾崎
Priority date: 2018-09-21
Filing date: 2019-09-20
Publication date: 2020-03-26
Also published as: JP6438170B1; JP2020044279A

Abstract

A medical marker (10, 10A, 10B, 10C, 10D, 10E) comprising: a cylindrical body part (100) which is grasped by an operator and is freely deformable; a gas flow channel (310) provided inside the body part; a holding part (210) which is provided inside the body part and is for holding ink; a pen tip (200) which is provided to an end part of the body and is for transferring ink to biological tissue by being brought into contact with the biological tissue; and a discharge port (300) which is provided to the end part and is for discharging the gas toward the biological tissue.

Description

Medical marker

The present invention relates to a medical marker.

医療 There is a medical pen (called a medical marker, a skin marker, or the like) that is used for a surgical operation and that attaches a mark indicating a suture position or the like to a living tissue.

JP 2018-23786 A

Depending on the contents of the operation and the location and structure of the target site, there are restrictions on how to handle the medical marker (such as the insertion angle into the body), and when the pen tip approaches the site to be marked (hereinafter referred to as the target site). In some cases, the body of the medical marker is obstructed and the pen tip is difficult to see from the surgeon. Specifically, as shown in FIG. 9, when the medical marker 900 is positioned on the line of sight from the operator to the target site, the operator can grasp the exact positional relationship between the pen tip and the target site 990. It becomes hard to do. If the medical marker 900 can be moved while being tilted with respect to the line of sight, the visibility is improved, but there are also situations in which such an operation cannot be performed due to constraints such as the presence of other living tissues.

In such a case, it is conceivable to select an instrument (forceps or the like) having an appropriate shape, remove the pen tip from a general skin marker, and grasp the detached pen tip with the instrument to perform marking. However, the amount of ink held by the pen tip is extremely small, and the pen tip becomes immediately unusable due to moisture (leakage or flow of blood) of the target site. As a result, it is often necessary to replace many skin markers during the operation, and labor and cost cannot be ignored.

As described above, with the conventional medical markers, it has been sometimes difficult to reliably perform marking at an accurate position.
An object of the present invention is to ensure the visibility of a pen tip in a medical marker.

The present invention provides, in one aspect, a tubular body portion that is gripped and deformable by an operator, a gas flow path provided inside the body portion, and an ink provided inside the body portion. And a pen tip provided at an end of the body, which is in contact with a living tissue and moves the ink to the living tissue, and a pen tip provided at the end, and transfers the gas to the living tissue. A medical marker having a discharge opening that discharges toward the medical marker.

According to the present invention, the operator can visually recognize the position of the pen tip.

FIG. 2 is a cross-sectional view of the medical marker 10. An example in which the body 100 is deformed. The figure which expanded the front-end | tip part of the medical marker 10. FIG. 3 is a cross-sectional view of the medical marker 10A-1. FIG. 3 is a cross-sectional view of the medical marker 10A-2. Sectional drawing of the medical marker 10B. The end view of the tip part of medical marker 10B. The end view of the tip part of medical marker 10C. FIG. 4 is an end view of a tip portion of the body portion 100. Sectional drawing of 10 E of medical markers. Example of a conventional medical marker.

<Example>
FIG. 1 is a cross-sectional view of the center line of the medical marker 10. The medical marker 10 includes a body part 100, a pen tip 200, an ink holding part 210, a flow path 310, a tapered part 320, and a connection part 330.

The body 100 is in the shape of a hollow elongated cylinder. Preferably, the cross-sectional shape is circular (cylindrical), but may be elliptical or polygonal. The body 100 is gripped by an operator (a person who performs marking using the medical marker 10 such as a surgeon or an assistant). The body 100 is formed of a deformable member that can be deformed by an operator applying force and maintain its shape without applying force. Specifically, the material itself of the body part 100 may have a deformation / holding function. Alternatively, the body part 100 may be configured of a plurality of parts and a joint part connecting the parts, and the angle of the joint may be fixed at an arbitrary position, so that the deformation and holding function may be realized as a whole.

胴 In the example shown in the figure, the body 100 is divided into P1, P2, and P3 in order from the tip. The P2 portion is swelled as compared with the front end portion in order to realize a certain diameter so as to be easily gripped. On the other hand, the portion P1 is formed in a tapered shape in order to ensure the visibility of the tip.

The surgeon can appropriately deform the torso 100 so that both the pen tip 200 and the target site can be seen, and then carry it to the target site.

The hose 420 is a tubular member connected to a gas cylinder (not shown) for storing gas. The gas is preferably carbon dioxide, but may be compressed air or another gas as long as at least the surface of the target site can be dried. Attachment 410 is attached to the tip of hose 420. When using the medical marker 10 in an operating room or the like, the surgeon connects the connection part 330 and the attachment 410 in advance. The hose 420 may have a cock function (not shown) for adjusting the gas flow rate. For example, a cock having a mechanism for changing the cross-sectional area by deforming the hose by sandwiching and pressing the hose 420.

インク An ink holding section 210 for holding ink (dye, pigment) is provided inside the body section 100. The ink holding unit 210 is realized by soaking ink in a rod-shaped felt. In this case, in order to prevent drying of the ink, it is preferable that airtightness inside the body portion 100 is maintained. Alternatively, the ink holding unit 210 may be realized as a column-shaped closed container filled with ink.

ペン A pen point 200 formed in a conical shape and joined to the ink holding unit 210 is provided at the tip of the body unit 100. The ink held in the ink holding unit 210 is supplied to the pen tip 200. When the pen tip 200 comes into contact with the target portion, the ink moves to the target portion, whereby marking is performed on the target portion.

The length, thickness, and cross-sectional shape of the ink holding unit 210 shown in FIG. 1 are merely examples, and the ink holding unit 210 may be housed inside the body 100. Preferably, the ink holding section 210 is elastically deformed according to the deformation of the body section 100. Even when the ink holding section 210 does not allow deformation, the body section 100 can be deformed within the deformation allowable limit of the ink holding section 210. For example, as shown in FIG. 2, the body 100 cannot be deformed from the front end of the body 100 to a position corresponding to the rear end of the ink holding unit 210, and the rear end of the body 100 cannot be deformed from this position. Is preferably allowed.

In short, any structure may be used as long as the ink holding unit 210 is not damaged even if the body 100 is deformed, and the function of holding and supplying ink is not impaired.

Although not shown, the medical marker 10 may include a cap member for protecting the pen tip 200 from drying when not in use.

気体 A gas flow path 310 is further formed inside the body 100. The flow channel 310 is made of a resin such as rubber, polyurethane, or polyethylene, and is preferably deformed with the deformation of the body 100.

A tapered portion 320 is formed at the rear end of the flow channel 310. A connection portion 330 for connecting to the attachment 410 is provided at the rear end of the tapered portion 320.
Preferably, the connection portion 330 is a female connector and is connected to the attachment 410 which is a male connector. Specifically, a protrusion and a stopper may be formed on the inner peripheral surface of the connection portion 330, and the connection may be established by fitting the attachment 410 into the connection portion 330. Alternatively, the connection portion 330 may have a configuration in which a thread is applied to the inner peripheral surface thereof, and the attachment 410 to which the corresponding thread is applied may be screwed.

Further, a discharge port 300 which is connected to the flow channel 310 and is an opening for discharging gas taken into the inside of the body portion 100 from the connection portion 330 toward the target portion is formed at a distal end portion of the body portion 100. Is done. When the cock of the cylinder is opened with the hose 420 connected to the connection portion 330, gas flows into the flow channel 310 via the hose 420 and is discharged from the connection portion 330.

FIG. 3 is an enlarged view of the tip of the medical marker 10. A pen point 200 which is a cone is disposed near the center of the tip, and a circular discharge port 300 is provided in the vicinity thereof.

According to this embodiment, the gas (e.g., blood) is blown off to the target portion, whereby water (eg, blood) on the surface of the target portion is blown off, and the surface of the living tissue is dried. Thereby, the ink is easily fixed on the surface. When carbon dioxide is used as the gas, the carbon dioxide easily dissolves into the blood, so that the released carbon dioxide is less likely to accumulate in the patient's body.

In order to prevent the inside of the body portion 100 from being hollow, the ink holding portion 210 in which the flow passage 310 is clogged due to deformation of the body portion 100 is not damaged, and the ink holding portion 210, the flow passage 310, A member (for example, an elastic body such as urethane) for filling a space other than the tapered portion 320 to reduce a force applied to the ink holding portion 210 and the flow path 310 may be packed inside the body portion 100.

<Modification>
The length of the ink holding unit 210 described above is an example. FIG. 4A is a cross-sectional view of a medical marker 10A-1 having an ink holding unit 210A instead of the ink holding unit 210. The ink holding unit 210 </ b> A is entirely formed of a deformable member, and has a length substantially equal to the length of the body 100. Further, a portion P2A occupying substantially the entire length of the body 100 is elastically deformable. In the medical marker 10A, the degree of freedom of the deformation of the body portion 100 is increased, the holding capacity of the ink is increased, and the life of the medical marker 10 is longer than that of the medical marker 10.

In the medical marker 10A-2 shown in FIG. 4B, P2 is composed of a substantially barrel-shaped elastically deformable portion P2F with a bulged center, and a substantially columnar portion P2B that is gripped by the operator and not elastically deformed. This is different from the medical marker 10 in that Thereby, the improvement of the hold feeling and the degree of freedom of deformation are compatible.

FIG. 5 is a cross-sectional view of the medical marker 10B. The channel 310 is not provided in the medical marker 10B. That is, the entire space other than the ink holding unit 210 inside the body unit 100 becomes a gas flow path. In this case, in order to prevent drying of the ink, the ink holding unit 210 is realized as a container filled with ink.

形状 The shape and number of the discharge ports are not limited to the above examples. In particular, the medical marker 10B has a degree of freedom in the configuration of the discharge port. For example, a rectangular outlet 300A may be formed as shown in FIG. 6A.

The number of outlets is not limited to one. For example, as shown in FIG. 6B, the medical marker 10C may be provided with emission ports 300-1, 300-2, 300-3, and 300-4 at four locations around the pen tip 200.

Alternatively, the discharge port 300B may be formed so as to surround the pen tip 200 like a medical marker 10D shown in FIG.

FIG. 8 shows a cross-sectional view of the medical marker 10E. The medical marker 10 </ b> E is provided on the flow channel 310 and has a valve 190 that adjusts the flow rate of gas and an operation unit 180 that is operated by an operator to adjust the opening / closing state of the valve 190. For example, the operation unit 180 is an ON / OFF switch, and the valve 190 is a mechanism that selects one of opening and closing the valve according to the switch operation. Alternatively, the operation unit 180 is a multi-step or stepless slide switch, and the valve 190 realizes a valve opening amount corresponding to the switch position.

The surgeon can adjust the amount of gas released from the outlet 300 by operating the operation unit 180. The target area has never been dried, but if the tip of the pen is too dry, it can be considered that the ink will not come out well. Can be adjusted to realize the above.
In addition, when the injection of the gas to the target part is unnecessary, the hose 420 may be used without being connected to the medical marker 10 or the like.

用途 The use of the medical marker according to the present invention is not particularly limited, but is particularly effective in an operation where marking is required at a place with low visibility such as inside a blood vessel. For example, there is an aortic reconstruction operation in which an aortic valve is formed using a leaflet material formed from a pericardium collected from a patient's heart.

10, 10A-1, 10A-2, 10B, 10C, 10D, 10E: medical marker, 100: body, 180: operation unit, 190: valve, 200: pen tip .., 210... Ink holding section, 300... Discharge port, 310... Flow path, 320.

Claims

A tubular body that is gripped and deformable by the surgeon,
A gas flow path provided inside the body,
A holding unit provided inside the body unit for holding ink,
A pen tip provided at an end of the body portion to contact the living tissue and move the ink to the living tissue; and a pen tip provided at the end to discharge gas in the flow path toward the living tissue. A medical marker having a discharge port.
The holding portion is deformable,
The medical marker according to claim 1.
A connecting portion provided at another end of the body portion, the connecting portion connecting a pipe to which the gas is supplied and the flow path;
The medical marker according to claim 1.
The medical marker according to any one of claims 1 to 3, further comprising: a mechanism provided on the body portion, the mechanism configured to adjust a release amount of the gas from the discharge port.