JPS60236657A - Laser operation tube inserted into body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to an intracorporeal insertion tube suitable for use during laser surgery.

! There are many types of lasers used in LSI shrimp medicine, such as krypton lasers, argon lasers, Nd-VAG lasers, and carbon dioxide lasers, and depending on their optical characteristics, they can be used for diagnosis, treatment, surgery, etc. It is used. These lasers, which can emit medium to high energy, are used for cauterizing affected areas, stopping bleeding, and for scalpel use. However, when using a high-energy laser, there is a risk that normal body tissue other than the affected area may be damaged due to mistaken firing. In particular, carbon dioxide lasers are suitable for use as laser scalpels because they are capable of high output, but since the wavelength is in the infrared region, they cannot be seen visually, making it extremely difficult to prevent accidental firing.

If the laser from a laser scalpel is mistakenly emitted into normal tissue in the human body, burns will occur in that area no matter how short the time.

However, the most dangerous accidental firing occurs when a laser is accidentally fired into the endotracheal tube when performing surgery with a laser scalpel using an internally inserted tube such as an endotracheal tube.

Endotracheal tubes are made of flexible vinyl chloride resin or silicone rubber 1, etc., but if an endotracheal tube made of vinyl chloride resin is mistakenly injected into the endotracheal tube, that part will immediately burn out and disintegrate, causing the tube to open and become normal. It damages tissue and the decomposition of the resin not only produces combustion gases but also extremely toxic chlorine gas. Furthermore, when general anesthesia is administered using an endotracheal tube, the oxygen flowing through the endotracheal tube may ignite, which is extremely dangerous. If the endotracheal tube is made of silicone rubber, there is no danger from the generation of chlorine gas, but the remaining risks are the same as with polyvinyl chloride resin. The above describes the most dangerous troubles with endotracheal tubes, or if a tube inserted into the body other than an endotracheal tube is used, mistakenly firing a laser at the tube can also burn out the tube and cause this problem. There is no difference from the endotracheal tube in that it damages the normal tissues of the human body.

Conventionally, in order to prevent damage to the endotracheal tube due to erroneous ejection of laser beams, it has been proposed to protect the tube surface by wrapping it with aluminum 11 tape or the like. However, aluminum tape tends to tear easily, and the sharp edges of the tape may injure the tracheal mucosa. moreover,
Another problem is that the endotracheal tube cuff cannot be wrapped with tape. In the case of a carbon dioxide laser, it is well absorbed by water, so applying a wet case to the cuff can be a temporary solution, but the operation is complicated and extremely troublesome.

Additionally, this technique is ineffective with other lasers currently used in surgery, such as the Nd'VAG laser and the argon laser.

OBJECT OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned drawbacks of the prior art. The purpose of the present invention is to provide a tube suitable for insertion into the body.

Light-Bright Structure--One aspect of the present invention is to apply fine metal powder or fine ceramic powder to the outer surface and/or inner surface of the tube, at least over the parts of the tube where there is a possibility of danger due to erroneous laser emission. A device for insertion into the body for use in laser surgery, characterized by having two coating layers: a first coating layer made of silicone rubber containing black pigment, and a second coating layer made of silicone rubber containing black pigment. It's a tube.

Another aspect of the present invention is a tube for insertion into the body, which is provided with a coating layer containing both a fine metal powder or a fine ceramic powder and a black pigment instead of the two coating layers described above.

FIG. 1 is a perspective view showing a configuration example when the present invention is applied to an endotracheal tube, and FIG. 2 is a sectional view taken along line 11--11 in FIG. 1. A coating layer 15 is provided at a region 17 that may be at risk due to erroneous laser emission. In this example, 2011 from the tip of the outer surface of the tube body 11
A covering layer 15 is provided including the cuff 13 up to about III.

The inner surface of the tube 11 is also provided with a coating layer 15'. 19 is an air introduction pipe, 2 [ is a pilot balloon, 2
3 is an air introduction port. The coating layer may be provided only on either the outer surface or the inner surface.

FIG. 3 is an explanatory sectional view showing the structure of the coating layer 15, in which a first coating layer 25 and a second coating layer 27 are laminated 11 on the tube body 11. The first coating layer 25 is formed of silicone rubber containing metal powder and/or ceramic powder. Metal powders include silver, stainless steel,
Nickel, titanium, tungsten, tantalium,
Examples include aluminum, and fine ceramic powders include fine powders of zirconia, silicon nitride, silicon carbide, zircon, silicon dioxide, and silicates, which may be used alone or in combination. Further, it is appropriate to blend these fine powders in an amount of 0.1 to 80 parts by weight, preferably 5 to 50 parts by weight, per 100 parts by weight of silicone rubber.

The second covering layer 27 is made of silicone rubber containing black pigment. Examples of black pigments include carbon black and fine graphite powder.

The black pigment is 0.1 per 100 parts by weight of silicone rubber.
・It is appropriate to mix up to 80 parts by weight, preferably 5 parts by weight.
~50 parts by weight.

In addition to the metal or ceramic fine powder, a black pigment may be added to the first coating layer 25.

Further, in addition to the black pigment, metal or ceramic fine powder may be added to the first coating layer 25.

As the material of the tube, silicone rubber, vinyl chloride, etc. are used, and silicone rubber is particularly preferred.

To make the endotracheal tube shown in Figure 1, a first coating layer is applied by a suitable application method such as dipping, for example with the cuff inflated, and then a second coating layer is applied in a similar manner. All you have to do is form.

FIG. 4 is a cross-sectional view showing another example of the structure of the coating layer, in which a single-layer coating layer 15 containing both fine metal powder and/or fine ceramic powder and black pigment is formed. It is appropriate for both of these fine powders to be blended in an amount of 0.1 to 80 parts by weight, preferably 5 to 50 parts by weight, per 100 parts by weight of silicone rubber.

Effects The tube for insertion into the body of the present invention is resistant to laser light and does not reflect laser light.

Therefore, the tube is not broken or damaged due to erroneous ejection of laser light, and it is highly safe. Furthermore, the inherent flexibility of the tube is not impaired, so it is easy to use.

Example 1 IE+571 to silicone rubber manufactured by Shin-Etsu Chemical Co., Ltd.
.

After adding 1.2 parts by weight of vulcanizing agent C-2 to the parts by weight and thoroughly kneading with a roll, the tube body of the endotracheal tube was extruded using a 50 mm extruder, and the tube body was formed into a tube with an inner diameter of 6.2 mmφ and an outer diameter. A tube having a target diameter of 8.5 mm and a liquid passage for cuff inflation of approximately 0.6 mm was prepared.

On the other hand, for the cuff, 100 parts by weight of 1 Hoehle silicone curve order silicone rubber SFI+8/l was cut into 100 parts by weight and vulcanizing agent R (
, 2 was added in an amount of 1.3 parts by weight, and after sufficiently kneading with a roll,
50mmφ Extrusion molded with an extruder, inner diameter 9.0mmφ
, I made a cuff tube with an outer diameter of 9.2mmφ. Approximately 3
．． It was cut into a length of 8 cm, and a cuff was attached to the endotracheal tube at a position approximately 2 cm from the tip of the tube body by gluing it with RTV silicone rubber 5H78 manufactured by Tomu Silicone Curve. Then, an air introduction tube with a pilot balloon attached was attached to the tube body at a position approximately 20 cm from the distal end thereof by adhesive bonding in the same manner to obtain a silicone rubber endotracheal tube. The endotracheal tube thus obtained is dipped according to the following procedure.

To μ silicone curved liquid silicone rubber 5IE67
2] ]00g, stainless steel StnoS:', 16-1
A coating solution was prepared by adding 350 mQ of n-hexane to the base to which 40 g of fine powder was added and thoroughly stirred. Next, inject approximately 20 m of air into the cuff through the air inlet of the endotracheal tube and seal it. With the cuff inflated in this manner, the endotracheal tube is immersed in the coating solution up to about 20 cm from the tip, and tipped to coat the endotracheal tube with blood clots inside and outside, and air-dried for about 10 minutes. Next is carbon black, Shin-Etsu Chemical Co., Ltd. liquid silicone rubber KE.
1941 long was diluted with 650 mO of 1-luene, taped in the same manner as the previous time, thoroughly air-dried, evaporated the solvent, and heated in an oven at 150°C for about 10 minutes. It was cured to create a cuffed endotracheal tube.

Example 2 Using an endotracheal tube prepared in the same manner as in Example 1, a liquid silicone comb made by Shin-Etsu Chemical Co., Ltd. (made by Taiyo Co., Ltd.) containing carbon black, F19411.
S3] After adding 30 g of 6-L fine powder and stirring thoroughly,
These bases were diluted with 650 mQ of toluene, coated with a coating solution in the same manner as in Example 1, the solvent was evaporated, and then heated and cured in an oven at 150°C for about 10 minutes to form a cuffed intratracheal tube. Created a tube.

Example 3 A diluted coating solution was prepared by adding 650 mQ of 1H to 100 g of Shin-Etsu Chemical Co., Ltd. (Kiyomi's liquid silicone product K E 194) containing carbon black. This liquid was further coated on the inner tube in the same manner as in Example 1 and heated at 150°C.
A cuffed endotracheal tube was prepared by heating and curing for about 10 minutes.

Example 4 1--Re Silicone (Liquid silicone comb 5E6 made by Taiyo Co., Ltd.
72110 was added with tungsten* powder 30F, stirred thoroughly, and diluted with n-hexane 260mQ.Tipped in the same manner as in Example 1, air-dried for about 10 minutes, and then prepared in Example 2. Tipping was performed a second time using the same coating solution, and the solvent was evaporated in the same way.
A cuffed endotracheal tube was prepared by heating and curing for a minute.

The air field tube of the present invention obtained as described above, a silicone rubber endotracheal tube without a coating layer (Comparative Example 1) and a soft vinyl chloride tube (Comparative Example 2) were prepared as controllers. A test piece was prepared by cutting out a portion from the tube body and cuff.

The JL et al. test piece was irradiated with laser pulses under the following irradiation conditions, and the number of irradiations until the perforation was completed was compared.

Laser: Carbon dioxide laser, Mo manufactured by Japan Infrared Industry ■
del 130X Y Irradiation angle: 90 degrees Beam diameter: 1mm Laser output crab tube body: 50W Cuff: 5W (Hereinafter, margin) Table 1

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the present invention applied to an endotracheal tube, and Fig. 2 is II-1 of Fig. 1.
3 and 4 are cross-sectional views taken along line 1, and are cross-sectional views showing examples of the structure of the coating layer of the present invention. 11...Tube body 13...Cuff 15.15'
Covering layer 25, first coating layer 27, second coating layer also 1 illustration 21! 1 broom 3 flashing bird 4 (! 1 1 procedural amendment June 4, 1981 Commissioner of the Patent Office Kazuo Wakasugi 1. Indication of the case Patent Application No. 93755 filed in 1982. 2. Name of the invention. Tube for intracorporeal insertion for laser surgery 3. Person making the amendment. Relationship to the case. Patent applicant: 1-11-1 Ebisu, Shibuya-ku, Tokyo. Fuji Systems Co., Ltd. Representative Nobuhisa Kawaguchi 4, Agent 5, Subject of amendment (1) IL of "Detailed description of the invention" in the specification = - (2
) II ” +”, 5! ,',−,:% ,,,j
6. Contents of amendment (1) The description of r mm J in section 8 of the specification has been changed to Irc.
Correct as +nJl. (2) At the end of page 14, the description “inside the hunting grounds” was changed to “inside the trachea.”
and correct it. (3) Change the description of "Endotracheal tube (Comparative example 1)" on page 15, line 2 of the same page to "Endotracheal tube i" manufactured by Dover (
Comparative Example 1)" (4) In the third line of the same page, change the description of "Tube (Comparative Example 2)" to the endotracheal tube manufactured by HP Ortex (Comparative Example 2).
)” is corrected. (5) In lines 6 and 7 of the same page, the description "Pulsing the laser" is corrected to "Pulsing the laser to the same point." (6) Same page, line 1 O+7) r130XYJ (7
) description is corrected to (r602). (7) The description of r50WJ on the 13th line of the same page is amended to “50W
Correct it to O, 1 secJl. (8) Change the description of "5W" in line 14 of the same page to Ii'5W
0.05 secJ]. (9) Figure 1 of the drawing will be amended as attached. 7. Catalog of attached documents (Figure 1) 1 copy per copy

Claims (1)

[Scope of Claims] 1. In a tube for insertion into the body, fine metal powder or ceramic is applied to the outer surface and/or inner surface of the tube, at least in areas where there is a possibility of danger due to erroneous laser emission of the tube. Insertion into the body for use in laser surgery, characterized by having two coating layers: a first coating layer made of silicone rubber containing fine powder and a second coating layer made of silicone rubber containing black pigment. tube. 2. Claim 1, wherein the tube for insertion into the body is any one of an endotracheal tube, an intrarectal tube, an intrathoracic tube, an intraperitoneal tube, a gastrointestinal tube, an intraoral tube, and an intracranial tube. Tube as described. 3. The tube according to claim 1, wherein the tube for insertion into the body is a tubular object inserted into the vagina or the uterus. 4. The tube according to claim 1, wherein the tube for insertion into the body is a catheter. 5. The tube for insertion into the body according to claim 1, wherein the first coating layer is a lower layer among the coating layers. 6. The tube for insertion into the body according to claim 1, wherein the first coating layer includes a black pigment in addition to the fine metal powder or the fine ceramic powder. 7. The tube for insertion into the body according to claim 1, wherein the second coating layer further contains a fine metal powder or a fine ceramic powder. 8. The tube for insertion into the body according to claim 1, wherein the metal fine powder is selected from silver, titanium, tungsten, tantalum, aluminum, stainless steel, and nickel fine powder. 9. Claim 1, wherein the ceramic fine powder is selected from fine powders of zirconia, silicon nitride, silicon carbide, zircon, silicon dioxide, and silicates.
Tube for insertion into the body as described in section. 10. The tube for insertion into the body according to claim 1, wherein the black pigment is selected from carbon black and Grapheye 1-fine powder. 11. In a tube for insertion into the body, fine metal powder or fine ceramic powder and black pigment are coated on the outside and/or inside of the tube, at least in areas where there is a possibility of danger due to erroneous laser emission. 1. A tube for insertion into the body used during laser surgery, characterized by having a coating layer made of silicone rubber. 12. The tube for insertion into the body is an endotracheal tube, an intrarectal tube, or an intrathoracic tube. Intraperitoneal tube, gastrointestinal tube 71 intraoral tube,
Claim 1I, which is any intracranial tube.
Tubes as described in section. 13. The tube according to claim 11, wherein the tube for insertion into the body is a tubular object inserted into the vagina or the uterus. ]4. 12. The tube according to claim 11, wherein the tube for insertion into the body is a catheter. 15. Claim 11, wherein the metal fine powder is selected from fine powders of silver, titanium, tungsten, tantalium, aluminum, stainless steel, and nickel.
Tube for insertion into the body as described in section. 16. Claim 1, wherein the ceramic fine powder is selected from fine powders of zirconia, silicon nitrogen, silicon carbide, zircon, silicon dioxide, and silicates.
The tube for insertion into the body according to item 1. 17. The tube for insertion into the body according to claim 1I, wherein the black pigment is selected from carbon black and fine graphite powder.