JPH07303600A - Tool inserted in body cavity - Google Patents

Abstract

PURPOSE:To improve cleaningness, insertion/slipping property of a tool inserted in a body cavity, by providing a water repellent processing layer in which particles or fibers of a fluorine compound are dispersed in a matrix made of a metal or a polymer on inside/outside peripheral faces of the tool inserted in the body cavity such as an endoscope or the like. CONSTITUTION:A tool inserted in a body cavity, for example, an injection device for endoscope 1 is formed in such a manner that a liquid sending tube 5 is inserted reciprocally inside a movable outer sheath 2 and a base 4 is connected to the base end of the outer sheath 2 through a connecting member 300 as well as a tip 3 is fit-attached on the head of the same sheath. And an injection needle 7 is attached to the head of the liquid sending tube 5 and a liquid sending base 8 is attached to the base end of the same tube, respectively. In this case, a water repellent processing layer 9 is arranged on each inside face and each outside face of an outer sheath 2 and the liquid sending tube 5, respectively. And the water repellent processing layer 9 is formed by dispersing particles or fibers of a fluorine compound into a metal or a polymer matrix. Thereby, cleaningness, insertion/slipping property of the tool inserted in the body cavity can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a body cavity insertion tool which is inserted into a body cavity.

[0002]

2. Description of the Related Art Conventionally, in an intracorporeal insertion tool to be inserted into a body cavity, for example, an endoscope, a treatment tool channel is made of a fluororesin to which mucus, cells and the like do not easily adhere, so that the inner surface of the treatment tool channel is To improve the cleaning performance. For example, Japanese Patent Application Laid-Open No. 62-200301 discloses a treatment tool channel in which a fluororesin layer is formed on the surface of a porous tube.

Further, Japanese Patent Laid-Open No. 63-214701 proposes to improve the drainage property of the cover glass by coating the cover glass provided at the tip of the endoscope with a fluororesin. There is.

On the other hand, a disposable sheath for preventing such contamination of the endoscope has been conventionally known. When performing an endoscopic examination, the main purpose is to cover the insertion portion of the endoscope with a disposable sheath so that cleaning and disinfection of the endoscope after the examination is unnecessary. Air or the like is injected into the inner hole of the disposable sheath to expand the disposable sheath, and a long endoscope is attached / detached to / from the expanded inner hole of the disposable sheath.

[0005]

Problems to be Solved by the Invention JP-A-62-2003
If the fluororesin is provided on the inner surface of the treatment instrument channel, as disclosed in Japanese Patent Laid-Open No. 01, the cleaning performance of the treatment instrument channel is improved. However, the fluororesin is insufficient to prevent the adherence of body fluid such as blood or mucus, and the body fluid or the like may adhere onto the fluororesin. Therefore, there is a limit to the improvement of the cleaning property.

Further, as proposed in Japanese Unexamined Patent Publication (Kokai) No. 63-214701, when a cover glass is coated with a fluororesin, the water drainage property of the cover lens is improved. Since the water repellency of the resin is limited, water cannot be completely drained from the cover lens.

On the other hand, as described above, when the disposable sheath is attached to the endoscope, air is supplied into the inner hole of the disposable sheath, and the endoscope is inserted into the disposable sheath while expanding the inner hole of the disposable sheath. . Therefore, an operation such as air supply is required, which makes the operation of loading and unloading complicated. Further, there is a problem that an apparatus for air supply is additionally required and the system becomes large. Further, there is also a problem that an extra lumen for air supply is needed for the disposable sheath and the disposable sheath has a large diameter. These problems are ultimately solved by improving the slipperiness of the disposable sheath that receives the endoscope.

The above problems are not limited to endoscopes,
The same problem occurs with all insertion tools inserted into the body cavity. Therefore, the present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an intracorporeal insertion tool that has good cleanability and excellent insertability or slipperiness.

[0009]

In order to solve the above-mentioned problems, the present invention provides a particle of a fluorine compound in a matrix of a metal or a polymer on at least a part of the inner and outer peripheral surfaces of a body cavity insertion tool. A water repellent treatment layer in which fibers are dispersed is provided.

Generally, the smaller the surface free energy of a substance, the lower the adsorptivity / adhesiveness of the substance. For example, polytetrafluoroethylene (PTFE), tetrafluoroethylene / perfluoroalkyl vinyl ether (P
Fluorine resin such as FA) and tetrafluoroethylene / hexafluoroethylene copolymer has a small surface free energy, and thus droplets and the like are less likely to adhere thereto.

Graphite fluoride is known to exhibit lower surface free energy than that of fluororesin.
Graphite fluoride is a powdery layered compound in which fluorine atoms penetrate between the layered structure of graphite, and (CF
x) n. Here, the value of x is 0 <x ≦
It is easy to take a value of 1.25. The surface free energy of graphite fluoride is very low. For example, the contact angle with water is generally measured as a value indicating the magnitude of the surface free energy, but in the case of composite plating of nickel and graphite fluoride, it is 173 ° with respect to 110 ° of polytetrafluoroethylene. And shows water repellency that is almost insoluble in water.

FIG. 1B shows a state in which water droplets are on the composite plating layer of graphite fluoride and nickel. The water droplet 351a on the fluororesin (PTFE) 353 has a contact angle of 110 ° (see FIG. 1A), whereas the water repellent layer 352 formed on the base material 354 by composite plating. The contact angle of the upper water droplet 351b is 173 °. Further, FIG. 1C is an enlarged view of the water repellent treatment layer 352, and it can be seen that the graphite fluoride 355 is dispersed in the metallic nickel 356.

When the graphite fluoride is fixed by composite plating with a metal or by being dispersed in a polymer or rubber, a water repellent treatment layer that does not adsorb liquid droplets or body fluid more than the fluororesin is inserted into the body cavity inserter. It can be formed on the surface.

Instead of the above-mentioned graphite fluoride, a powder or fiber of fluororesin or fluororesin in which hydrogen at the terminal of the fluororesin is replaced with fluorine may be used.
When composite plating of fluororesin and metal is performed, or when fluororesin is dispersed in plastic or rubber, the water repellency of the surface is not greatly improved compared to ordinary fluororesin coating, but friction resistance And the effect of imparting electric conductivity to the water repellent layer.

For example, when a fluororesin is embedded in a metal or a plastic, such as graphite fluoride shown in FIG. 1C, the matrix of the metal or the plastic mechanically fixes the fluororesin. The abrasion resistance is improved as compared with the case of surface coating. In addition, when the matrix is a metal, electricity flows through the metal portion, and thus the conventional fluororesin coat is insulative, whereas the water repellent layer of the present invention is electrically conductive.

By providing such a water-repellent treatment layer on the surface, it is possible to improve the cleanability of the instrument to be inserted into the body cavity such as the treatment instrument and the endoscope, or the drainage of the endoscope optical system. . Further, by providing a water repellent treatment layer on the above-mentioned disposable sheath, the slipperiness of the disposable sheath is improved, and the endoscope can be easily inserted into the inner hole of the disposable sheath without performing the air feeding operation or the like. The attachment / detachment of the disposable sheath with respect to the endoscope can be performed easily and reliably.

If the disposable sheath is simply made of fluororesin, there is a problem that the disposable sheath becomes hard due to the high hardness of the fluororesin. Further, a porous fluororesin, for example, a fluororesin such as GORE-TEX is soft, but when the disposable sheath is made of GORE-TEX, the endoscope may be contaminated through the hole of the disposable sheath because it is porous. There is. Furthermore, since fluororesin has poor adhesiveness with other resin materials, when a fluororesin is simply coated on a flexible resin tube such as polyurethane or polyethylene, the fluororesin layer and the soft resin tube will separate during use. There's a problem.

However, as described above, graphite fluoride has very small friction like fluororesin.
Therefore, on the surface of the disposable sheath, a thin film is formed on the surface of the disposable sheath, a powder of a fluororesin or a fluororesin in which fluorine at the terminal hydrogen of the fluororesin is replaced with fluorine or a composite plating of a fiber and a metal is formed, or a disposable sheath is formed. Dispersing graphite fluoride, fluororesin, or fluororesin powder or fibers in which fluorine at the terminal hydrogen of the fluororesin is replaced in the flexible resin material to disperse graphite fluoride, fluororesin, or fluororesin ends on the surface of the disposable sheath. By fixing the powder or fiber of the fluororesin whose hydrogen has been replaced with fluorine and providing the low friction surface on the surface of the disposable sheath, it is possible to easily and surely attach and detach the disposable sheath to and from the endoscope.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows a first embodiment of the present invention. In this embodiment, the water repellent layer is used as the endoscope injection device 1.
The example applied to is shown. Illustrated endoscope injection device 1
Is composed of a flexible outer sheath 2 and a liquid feeding tube 5 which is inserted into the outer sheath 2 so as to be capable of advancing and retracting. A tip 3 is fitted on the tip of the outer sheath 2. The base 4 of the outer sheath 2 is connected to the base 4 via a connecting member 300. In this case, the proximal end portion of the connecting member 300 is fitted to the inner surface of the distal end portion of the mouthpiece 4, and the saw-shaped locking portion 300a formed on the outer peripheral surface of the distal end portion of the connecting member 300 has the proximal end portion of the outer sheath 2. The outer sheath 2 and the base 4 are connected by biting into the inner surface of the.

An injection needle 7 penetrating the inner hole of the tip 3 is attached to the tip of the liquid feeding tube 5. As shown in FIG. 1 (b), the injection needle 7 is formed with a through hole 7a which serves as a passage for the injection liquid.

A liquid delivery mouthpiece 8 is attached to the base end of the liquid delivery tube 5. Further, a stopper 6 is provided on the outer periphery of the proximal end portion of the injection needle 7 to regulate the amount of projection of the injection needle 7 protruding from the tip of the tip. This stopper 6
When the liquid delivery mouthpiece 8 is gripped and the liquid delivery tube 5 is pushed in the outer sheath 2, it hits the proximal end surface of the tip 3 and prevents the injection needle 7 from further projecting.

The inner surface and the outer surface of the endoscope injection device 1, that is, the inner surface and the outer surface of the outer sheath 2 and the liquid-feeding tube 5, respectively, have the water repellent treatment described in "Means for Solving the Problems". A layer 9 is provided. Further, as shown in FIG. 1B, the water repellent treatment layer 9 is also provided on the outer surface and the inner surface of the injection needle 7.

Next, the water repellent treatment layer 9 is added to the endoscope injection device 1.
A method of providing the will be described. First, for a metal member such as the tip 3 or the injection needle 7, the water repellent treatment layer 9 is formed by composite plating of a metal material such as nickel or copper and graphite fluoride. Further, for members made of a flexible resin material such as the outer sheath 2 and the liquid feeding tube 5,
First, a metal plating layer is formed on the surface of a member made of such a resin material by chemical plating such as electroless plating, and the water repellent treatment layer 9 is formed on the metal plating layer by the composite plating described above.

The outer sheath and the liquid feeding tube may be formed by dispersing graphite fluoride in a flexible resin material. In this case, there is an advantage that the problem such as peeling of the metal plating layer does not occur and the durability is higher than that in the case where the metal plating layer is formed on the surface of the resin material.

First, the endoscope injection device 1 having the above-described structure
The injection needle 7 is pulled into the outer sheath 2 and inserted into the body cavity through the treatment tool insertion channel of the endoscope.
Next, the liquid feeding tube 5 is pushed forward in the outer sheath 2 while gripping the liquid feeding mouthpiece 8, and the injection needle 7 is projected until the stopper 6 hits the tip 3. Then, with the injection needle 7 punctured in the affected area, the injection end portion of the syringe (not shown) is fitted into the syringe fitting opening 8b of the liquid delivery mouthpiece 8 to inject the drug solution or the like from the syringe into the affected area. In this case, the drug solution or the like from the syringe is injected into the affected area through the through hole 8a of the solution sending mouthpiece 8, the solution sending hole 5a of the solution sending tube 5, and the through hole 7a of the injection needle 7. In order to prevent the injection needle 7 from returning to the inside of the outer sheath 2 due to the pressure from the inner wall of the body cavity, the base 4 of the outer sheath 2 is provided with the liquid delivery base 8 of the base end of the liquid delivery tube 5. Engage and secure. In this engagement, the tapered portion 8c of the liquid delivery mouthpiece 8 is fitted into the fitting opening 4a of the mouthpiece 4.
Is inserted between the taper portion 8c and the peripheral surface of the fitting opening 4a.

As described above, in the endoscope injection device 1 of this embodiment, the water repellent layer 9 is applied to the inner surface and the outer surface of the outer sheath 2, the liquid feeding tube 5, and the injection needle 7, respectively. Therefore, due to the extremely high water repellency of the water repellent treatment layer 9, body fluids such as mucus and blood are unlikely to adhere to the inner and outer surfaces thereof. In particular, since the inner hole 2a of the outer sheath 2 through which the liquid feeding tube 5 is inserted, the liquid feeding hole 5a of the liquid feeding tube 5, and the through hole 7a of the injection needle 7 have a small diameter, they are rubbed with a brush or the like to remove dirt. I can't drop it. Therefore, conventionally,
Cleaning was carried out by flowing cleaning water into these through holes 2a, 5a, 7a. However, once foreign matter such as blood or mucus attached to these through hole portions dries, the dried foreign matter is removed. It cannot be easily removed with running water.

However, in this embodiment, since the adhesion of the foreign matter to the water repellent layer 9 is weak, the running holes 2a, 5a, 7a can be easily cleaned by flowing running water. Further, after the washing, the water repellency of the water-repellent treatment layer 9 does not leave droplets of the washing water on the inner and outer surfaces of the endoscope injection device 1, so that the drying is very fast.

FIGS. 3 and 4 show a second embodiment of the present invention. This embodiment shows an example in which a water repellent layer is applied to the endoscopic grasping forceps 10. As shown in FIG. 3A, the grasping forceps 10 for an endoscope includes a coil sheath 1
2 and a treatment section 13 provided at the tip of the coil sheath 12.
And an operating portion 11 provided at the proximal end of the coil sheath 12. The operation unit 11 includes a fixed handle 17a and a movable handle 17b.

A break preventing sheath 14 is provided between the coil sheath 12 and the operating portion 11. Coil sheath 1
A movable handle 17b of the treatment section 13 and the operation section 11 is provided in
The operation wire 16 joined to and is inserted so that it can move back and forth.

As shown in FIG. 4, the treatment section 13 has two gripping cups 18, 18 which constitute a gripping section.
Further, the gripping cups 18, 18 are rotatably connected to each other via a pivot pin 21, and the rearward extending portions 18a, 18a of the gripping cups 18, 18 are linked members 24, 25 by the pivot pins 22, 23, respectively. The link mechanism 26 is configured by rotatably connecting the link members 24 and 25 to the connecting member 19 connected to the tip of the operation wire 16 via the link pin 20. There is. Therefore, if the operation wire 16 is pushed and pulled through the movable handle 17b, the link mechanism operates,
The gripping cups 18, 18 are opened and closed.

Further, as shown in FIG. 3B, a water repellent treatment layer 9 is applied to the inner surface and the outer surface of the coil sheath 12. Further, as shown in FIG. 4, the water repellent layer 9 is also applied to the entire surface of the link mechanism 26 and the gripping surfaces of the gripping cups 18, 18. All of these water repellent layers 9 are formed by composite plating of a metal material such as nickel or copper and graphite fluoride.

In the endoscope grasping forceps 10 having the above structure, first, the coil sheath 12 is inserted into the body cavity via the treatment tool insertion channel of the endoscope. Then, the movable handle 1
When 7b is pushed toward the tip side along the axial direction, the operation wire 1
6 operates the link mechanism 26 of the treatment portion 13 to open the gripping cups 18, 18. Then, the gripping cup 1 in the open state
Movable handle 1 with 8 and 18 pressed against the target tissue
When 8 is pulled toward the hand side, the grasping cups 18, 18 are closed via the link mechanism 26, and the biopsy tissue is collected by the grasping cups 18, 18.

As described above, since the endoscopic grasping forceps 10 of this embodiment is provided with the water repellent treatment layer 9 on the inner surface and the outer surface of the coil sheath 12, it is necessary to perform a procedure such as a biopsy. Body fluids such as mucus and blood are less likely to adhere and the washability after treatment is good.

Further, the coil sheath 12 is usually curved or deformed into a loop when inserted into a body cavity. Therefore, the operation wire 16 rubs against the inner surface of the coil sheath 12, and the friction increases the amount of operation force, which deteriorates the operability. However, in the case of the present embodiment, the water repellent treatment layer 9 is provided on the inner surface of the coil sheath 12, and due to the high slip property of the surface of the water repellent treatment layer 9, the coil sheath 12 is provided.
Since the frictional force between the inner surface of and the operating wire 16 is reduced, the amount of operating force does not increase and good operability can be secured.

Further, the grasping forceps 10 for an endoscope of this embodiment.
Is provided with the water-repellent layer 9 on the entire surface of the link mechanism 26. In general, the link mechanism 26 has many movable parts, and dirt is easily attached to the gaps and the like. Once dirt enters this gap, it is difficult to remove this dirt with a brush or the like. Therefore, normally, the dirt in the gap is removed by ultrasonic cleaning or the like.
However, since ultrasonic cleaning imposes a heavy load on the treatment tool, it may be difficult to perform the treatment on an endoscopic treatment tool having a particularly low resistance, or the life of the treatment tool itself may be shortened. .

On the other hand, in the endoscopic grasping forceps 10 of the present embodiment, since the water repellent treatment layer 9 is provided on the entire surface of the link mechanism 26, dirt is not easily attached to the link mechanism 26, and Even if dirt adheres, its adhesion is small, so
It can be easily washed with running water. Also,
Even when ultrasonic cleaning is performed, cleaning is completed in a shorter cleaning time. Therefore, the life of the treatment tool is extended. Further, since the water repellent layer 9 is also applied to the rocking portion of the link mechanism 26, rocking friction in the link operation is reduced and the amount of operation force such as a grip operation is reduced, so that the operability is improved.

Further, the grasping forceps 10 for an endoscope of this embodiment.
Is provided with a water repellent treatment layer 9 on the grip surfaces of the grip cups 18, 18. Therefore, the adhesive force between the biopsy tissue biopsied by the grasping cups 18 and 18 and the grasping surfaces of the grasping cups 18 and 18 becomes small, so that the biopsy tissue can be easily peeled from the grasping cups 18 and 18 after the biopsy. be able to.

FIG. 5 shows a third embodiment of the present invention. In the present embodiment, the water repellent layer is used as the contrast agent injection tube 2.
The example applied to No. 7 is shown. As illustrated, the contrast agent injection tube 27 includes a flexible sheath 28. A base 30 is connected to a connecting portion 29 at the base end of the sheath 28. A first cock 31 for fitting an injection cylinder for liquid delivery is formed on the top of the base 30. A second cock 32 for fitting a wire support member 33 having a buckling prevention wire 33a is formed at the base end of the base 30. The inner holes of the first and second cocks 31, 32 communicate with a through hole 30a formed in the base 30 in the axial direction. Further, the buckling prevention wire 33a is inserted through the through hole 30a up to a midpoint of the liquid feeding hole 28a of the sheath 28. A water-repellent treatment layer 9 is provided on the entire circumferential surface of the inner hole of the contrast agent injection tube 27. That is, the inner peripheral surface of the liquid delivery hole 28a of the sheath 28, the first and second cocks 31,
To the inner peripheral surface of the through hole 30a of the base 30 including the inner hole of 32,
A water repellent treatment layer 9 is applied.

The water repellent layer 9 is formed on a metal member by composite plating of a metal material such as nickel or copper and graphite fluoride. For a member made of a resin material, first, a metal plating layer is formed on the surface of the member made of such a resin material by chemical plating such as electroless plating, and the water repellent layer 9 is formed on the metal plating layer. It is formed by the composite plating.

The contrast medium injection tube 27 thus constructed is first inserted into the duodenum, for example, through the treatment instrument insertion channel of the endoscope, and retrogradely inserted into the bile duct or pancreatic duct from the duodenum side through the papilla. To be done. After inserting the contrast agent injecting tube 27 into the bile duct or pancreatic duct, the contrast agent is injected from the first cock 31 provided in the base 30 this time to image the bile duct or pancreatic duct. In this case, conventionally, since the inner diameter of the contrast agent injecting tube 27 has a small diameter, the conduit resistance at the time of injecting the contrast agent is large, and the viscosity of the contrast agent is relatively high. Had to inject. Therefore, the internal pressure of the lumen of the bile duct or pancreatic duct is inadvertently increased, which may cause pain to the patient.

However, in this embodiment, the water repellent treatment layer 9 having extremely high water repellency is provided in the inner hole of the contrast agent injection tube 27.
The contrast agent and the contrast agent injection tube 2 are provided.
The contact area with the inner hole of 7 becomes very small, and the shear stress applied to the contrast agent flowing in the sheath 28 is also reduced, so that the duct resistance is lowered. Therefore, the injection pressure of the contrast agent is also reduced, and the pressure in the lumen of the bile duct or pancreatic duct is not increased as described above.

In order to impart water repellency to the contrast agent injection tube 27, in addition to the method using composite plating as described above,
The sheath 28 may be formed by dispersing graphite fluoride in a flexible resin material. In this case, there is an advantage that the problem such as peeling of the metal plating layer does not occur and the durability is higher than that in the case where the metal plating layer is formed on the surface of the resin material. Further, the die 30 may be formed by dispersing graphite fluoride in a flexible resin material. In this case, the cleaning property of the whole including the sheath 28 is improved.

FIG. 6 shows a fourth embodiment of the present invention. This example shows an example in which the water repellent layer is applied to a cover lens of an endoscope. In FIG. 6, reference numeral 35 is an endoscope, and 36 is a distal end portion connected to the distal end of the insertion portion 42 of the endoscope 35. The tip portion 36 has a main body composed of a tip forming portion 36a and a tip cover 36b. Insertion part 42
Is the inner tubular sheet 42b and the outer jacket tube 42b
The sheath tube 42b is wound around and fixed to the tip forming portion 36a. Further, a plurality of bending pieces 34 are rotatably connected to each other and axially arranged in the insertion portion 42, and the most advanced bending pieces 34 are connected to the tip forming portion 36a.

An air / water supply tube 37, which is arranged from the distal end of the endoscope 35 to the side of the operating portion at hand, is a connection mouthpiece 1.
It is connected to the tip forming portion 36a via 5a. The connection mouthpiece 15a is fitted in the lumen of the tip forming portion 36a, and the tip thereof serves as the nozzle portion 38.
Protruding from the tip of. In this case, the ejection port of the nozzle portion 38 is directed to the cover lens 41 described later.

An operation section on the near side of the endoscope 35 (not shown)
The channel tube 43 forming a treatment tool channel that guides the treatment tool introduced from the tip to the distal end portion 36 is the base 15c.
Is connected to the tip forming portion 36a via. Base 15
c is fitted in the lumen of the tip forming portion 36a,
The treatment instrument fitted through the channel tube 43 can be projected from the tip of the tip portion 36.

The image guide fiber 39 for transmitting the image on the distal end side of the endoscope 35 to the operation section side is provided with a protective tube 47.
It is arranged in a state of being covered with. The protection tube 47 is connected to the tip forming portion 36a via the base 15b. The base 15b is fitted in another lumen of the tip forming portion 36a, and a plurality of objective lenses 40a ... Held by a lens frame 40 are provided in front of the lumen in which the base 15b is fitted. . These objective lenses 40a ... Form an image on the tip side of the image guide fiber 39. Further, a cover lens 41 whose surface is exposed to the outside is provided in front of the objective lenses 40a. The water repellent layer 9 is provided on the surface of the cover lens 41. The water-repellent layer 9 is formed by first coating a transparent electrode such as indium oxide or tin oxide on the surface of the cover lens 41, and compound plating of graphite fluoride and nickel, copper or tin on the coated transparent electrode surface. Is formed by forming a thin film.

The endoscope 35 having the above-described structure first observes the inside of the body cavity by orally inserting the insertion portion 42 into the body cavity. At this time, when the tip end surface of the tip end portion 36 comes into contact with a biological tissue or the like, body fluid or the like adheres to the surface of the cover lens 41, which hinders the view. Therefore, cleaning water is sent from the operation unit side (not shown) through the inner hole of the air / water supply tube 37, and the cleaning water is ejected from the nozzle 38 toward the surface of the cover lens 41 to adhere to the surface of the cover lens 41. Rinse away bodily fluids that have been removed. Subsequently, air is also sent from the operation unit side (not shown) through the air / water supply tube 37, and the water droplets remaining on the surface of the cover lens 41 are blown off by the jet air from the nozzle 38. This ensures a clear view.

As described above, in the endoscope 35 of the present embodiment, since the water repellent treatment layer 9 is provided on the surface of the cover lens 41, even if the distal end portion 36 comes into contact with the living tissue, the cover lens 41 is covered. Body fluid and the like hardly adhere to the surface, and there is no need to perform cleaning through the air / water supply tube 37.
Further, even if body fluid or the like adheres to the cover lens 41, the body fluid or the like can be easily washed off by a washing operation through the air / water feeding tube 37, so that a good visual field can always be obtained. Further, when the surface of the cover lens 41 is cleaned by the air / water supply operation, the water repellency of the water repellent treatment layer 9 does not leave water drops on the cover lens 41 and hinder the visibility.

FIG. 7 shows a fifth embodiment of the present invention. This embodiment shows an example in which the water repellent layer is applied to a cover lens and an objective lens of an endoscope. Note that FIG.
The same members as those described above are designated by the same reference numerals, and description thereof will be omitted.

As shown in the figure, a water repellent layer 9 is applied to the surfaces of all the objective lenses 40a ... And the cover lens 41 of the endoscope 44. Similarly to the fourth embodiment, the water-repellent layer 9 is formed by coating the surface of the cover lens 41 and the objective lens 40a with a transparent electrode, such as indium oxide or tin oxide, and then coating the surface of the transparent electrode. It is provided by forming a composite plating of graphite fluoride and nickel, copper, or tin into a thin film.

Generally, since the endoscope is inserted into a living body having a relatively low temperature from room temperature to a high temperature, the distal end portion 36 of the endoscope is used.
When the water vapor enters the installation portion where the objective lens groups 40a ... Are arranged, the water vapor may condense on the surface of the objective lens groups 40a.

Therefore, as in this embodiment, the water repellent layer 9 is formed on the surfaces of the cover lens 41 and the objective lens group 40a.
Is provided, due to the high water repellency of the surface of the water repellent treatment layer 9,
, 41 does not condense water vapor on the surfaces of the lenses 40a.

FIG. 8 shows a sixth embodiment of the present invention. This embodiment shows an example in which the water repellent layer is applied to the outer surface of the tip portion of the endoscope and the nozzle. The same members as those in FIG. 6 are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the water repellent layer 9 is applied to the entire outer surface of the distal end cover 36b of the distal end portion 36 of the endoscope 48 and the entire outer surface of the nozzle. This water repellent layer 9 also has a fourth
Similar to the embodiment described above, the cover lens 41 and the objective lens 40
First, a transparent electrode such as indium oxide or tin oxide is coated on the surface of a, and a composite plating of graphite fluoride and nickel, copper or tin is formed in a thin film on the coated transparent electrode surface. To be

Regarding the operation of the above configuration, FIG. 9 and FIG.
Will be described with reference to. FIG. 9 is for explaining the operation of the present embodiment, and in FIG. 9A, a water droplet 54a is attached on the cover lens 41. In FIG. 9, since the water repellent treatment layer 9 is provided on the surface of the tip cover 36b, the water droplet 54a is attached only on the surface of the cover lens 41. When air is blown out from the nozzle hole 51 in this state, as shown in FIG.
The water droplet 54a on 1 is blown off cleanly.

On the other hand, FIG. 10 is for explaining the prior art, in which the water droplet 54b adhering to the cover lens 41 adheres to the cover lens 41 and the tip cover 36. Therefore, even if air is blown from the nozzle hole 51, the water droplets 54b on the cover lens 41 are blown off cleanly, but some of the water droplets attached to the tip cover 36b are not completely blown off, and the water drops 54b in FIG. As shown in (4), it remains around the cover lens 41, which obstructs the visual field.

Thus, as in this embodiment, the tip portion 3
Even when the water repellent treatment layer 9 is provided on the entire outer surface of the tip cover 36b forming the surface of No. 6, the same as when the water repellent treatment layer 9 is formed on the cover lens 41 (fourth and fifth embodiments). Drainability is obtained. Further, when the water repellent treatment layer 9 or the like is provided in the optical system such as the cover lens 41, the optical characteristics change, and thus there is a problem that the lens design becomes complicated. Can be used, which facilitates the optical design. In this example,
It does not matter if the water repellent layer 9 is provided on the cover lens 41.

FIG. 11 shows a seventh embodiment of the present invention. This embodiment shows an example in which the water repellent layer is applied to the insertion part of a rigid endoscope. As shown in FIG. 11, the endoscope 60 includes a rigid, small-diameter insertion portion 66 that is inserted into a body cavity.
And an endoscope body 67 formed integrally with the base end of the insertion portion 66.

The insertion section 66 has an observation optical system 64 having a gradient index lens for forming a subject image and transmitting it to the hand side, and an illumination light made up of a light guide fiber and the like. An illumination optical system 63 that transmits to the tip of the mirror 60 is provided.

The observation optical system 64 is constructed by arranging a transmission optical system 65, such as a gradient index lens, over substantially the entire length of the insertion portion 66. This transmission optical system 6
An objective optical system 62 is provided at the tip of the optical disc 5. The base end of the transmission optical system 65 is disposed in the eyepiece 68 of the endoscope body 67 and is optically connected to the eyepiece optical system 69 provided in the eyepiece 68. .

On the other hand, the illumination optical system 63 extends over substantially the entire length of the insertion portion 66, and the base end portion thereof is connected to the ride guide mouthpiece 70 provided on the side portion of the endoscope body 67. .

In this embodiment, the water repellent layer 9 is provided on the entire outer surface of the insertion portion 66. Similarly to the fourth embodiment, the water-repellent layer 9 is formed by coating the surface of the cover lens 41 and the objective lens 40a with a transparent electrode, such as indium oxide or tin oxide, and then coating the surface of the transparent electrode. It is provided by forming a composite plating of graphite fluoride and nickel, copper, or tin into a thin film.

As shown in FIG. 12, the endoscope 6 according to the present embodiment.
For example, 0 is introduced into the abdominal cavity via the trocar 73 that penetrates the puncture hole in the abdominal wall 74. The endoscope 60 inserted into the abdominal cavity is the light guide base 70 of the endoscope body 67.
Is connected to a light source (not shown) via a ride guide cable 72 connected to the light source, and the illumination light from the light source is transmitted to the tip of the insertion portion 66 via the illumination optical system 63 to receive the illumination light from the tip. Irradiate to the inspection site. And
The subject image obtained by the observation optical system 64 is observed through the eyepiece optical system 69 with the naked eye or a TV camera.

In general, when an endoscope is used in a body cavity, the field of view may be deteriorated due to the tip of the insertion portion being contaminated with body fluid such as biological tissue or the objective optical system being clouded. In this case, the endoscope is once pulled out from the trocar 73 to remove dirt and then again inserted into the body cavity through the trocar. However, when the dirty endoscope is pulled out from the trocar 73, the dirt on the surface of the endoscope adheres to the peripheral surface of the inner hole of the trocar 73, and the trocar 73 is no good.
There is a problem that, when the endoscope that has been pulled out from the body and cleaned is again inserted into the body cavity by transtracal, the endoscope becomes dirty due to dirt on the inner hole surface of the trocar.

However, in this embodiment, since the surface of the insertion portion 66 of the endoscope 60 is provided with the water-repellent treatment layer 9 on which dirt such as body fluid is unlikely to adhere, the insertion portion 66 of the endoscope is covered. The dirt hardly adheres, the inner surface of the trocar 73 is not contaminated by the endoscope 60 as described above, and the endoscope 60 is not contaminated by the trocar 73. .

FIG. 13 shows an eighth embodiment of the present invention. This example shows an example in which the water repellent layer is applied to a trocar. In the figure, 73 is the above-mentioned trocar. The trocar 73 comprises a rigid hollow tubular trocar insertion portion 76 and a holding portion 77 connected to the base end of the trocar insertion portion 76. And in this embodiment,
The water repellent layer 9 is formed on the inner surface and the outer surface of the trocar insertion portion 76.
Is provided. Similarly to the fourth embodiment, the water-repellent layer 9 is formed by coating the surface of the cover lens 41 and the objective lens 40a with a transparent electrode, such as indium oxide or tin oxide, and then coating the surface of the transparent electrode. It is provided by forming a composite plating of graphite fluoride and nickel, copper, or tin into a thin film. In this way, by applying the water repellent treatment layer 9 to the inner and outer surfaces of the insertion portion 76 of the trocar 73, it is possible to obtain the same effect as that described in the seventh embodiment.

14 and 15 show another structure of the trocar. The trocar 80 includes a trocar insertion portion 81 and a holding portion 82 connected to the base end side of the trocar insertion portion 81.
A water-repellent treatment layer 9 is provided on the inner and outer surfaces of and the holding portion 82.

A rubber seal member 85 is attached to the inner surface of the base of the holding portion 82. In addition, pin 8
A valve member 83 is attached via 4. The valve member 83 is rotatable around a pin 84 as an axis, and is constantly urged by a spring member (not shown) so as to abut the insertion hole 88 of the seal member 85 to close the insertion hole 88 in a sealed state. Further, the holding portion 8 is provided at the center of the seal member 85.
An insertion hole 88 having a diameter smaller than that of the insertion hole 87 provided at the base end of No. 2 is formed. It should be noted that FIG.
The insertion portion 66 is inserted into the trocar 80 in a sealed state. In this state, the valve member 83 is pushed inward of the holding portion 82 against the biasing force of the spring described above by the insertion portion 66 of the endoscope 60 inserted into the trocar 80 through the insertion hole 88.

In general, the trocar has the valve member as described above, has a relatively complicated structure, and the movable portion and the like are easily soiled. It is also difficult to wash. However, by providing the water-repellent treatment layer 9 as in the present embodiment, the adherence of dirt such as body fluid is reduced, and the cleanability is improved.

16 to 18 show a ninth embodiment of the present invention. This example shows an example in which the water repellent layer is applied to an electronic endoscope. FIG. 16 shows an endoscope system. In the figure, 101 is an electronic endoscope, and the endoscope 101 is an operation unit 10 that also functions as a grip portion on the near side.
A slender insertion portion 103 having a tip portion 36 and a curved portion 42 is extended and configured in front of 2. Operation unit 102
A universal cord 104 connected to the light source device 106 via a connector 105 is attached to the side portion of the. Further, the light source device 106 is connected with a video processor 107 for signal-processing an image pickup signal from the electronic endoscope 101 and a monitor 108 for displaying an image. Also,
The water supply tank 109 and the suction bottle 111 communicating with the suction pump 110 connect the light source device 10 via the connector 105.
6 and is connected to the pipeline control device 112.

FIG. 17 shows a sectional view of the tip side portion of the electronic endoscope 1. A subject image illuminated by illumination light from a light guide (not shown, which is inserted into the universal cord 104) connected to the light source device 106 is a solid-state image pickup arranged on its focal plane by the objective lens system 40a. An image is formed on the element 116. This solid-state image sensor 1
The optical image photoelectrically converted by 16 becomes an electric signal, passes through the electric cable 117, and is transmitted to the video processing unit in the light source device 106 connected to the universal cord 104 on the hand side. Since the other configurations are the same as those in FIGS. 6 to 8, the same reference numerals are given and the description thereof will be omitted.

By the way, in this embodiment, the water repellent layer 9 is formed on the inner surface of the air / water supply channel formed by the inner surface of the air / water supply tube 37, the inner surface of the mouthpiece 15a and the inner hole surface of the nozzle 38. There is. Further, the water repellent treatment layer 9 is also formed on the inner surface of the treatment instrument insertion channel formed by the inner surface of the channel tube 43 and the inner surface of the base 15c. As shown in FIG. 18, the water-repellent layer 9 includes a base material 120a made of a synthetic resin material such as Teflon, and a thin metal layer 120b such as nickel provided on the base material. It is formed by precipitating a compound with.

In the endoscope 101 constructed in this way,
When performing a diagnosis / treatment after insertion into the body cavity, an air / water feeding channel (formed by the inner surface of the air / water feeding tube 37, the inner surface of the base 15a and the inner hole surface of the nozzle 38), and a treatment tool insertion channel ( (Formed by the inner surface of the channel tube 43 and the inner surface of the base 15c) comes into contact with a body fluid or a cleaning solution, or a treatment tool to which body fluid or the like is attached. However, the inner surface of the air / water supply tube 37, the inner surface of the mouthpiece 15a, the inner surface of the nozzle 38, the inner surface of the channel tube 43, and the inner surface of the mouthpiece 15c are each provided with the water repellent treatment layer 9 having water repellency. , The surface energy on these inner surfaces is extremely low. Therefore, the contact angle of the substance existing on the surface becomes large, and the possibility that the body fluid, the cleaning liquid, or the like adheres to and remains on these inner surfaces is reduced. Further, for example, even if a water drop or the like remains in the inner hole of the nozzle 38, the water drop or the like can be easily removed simply by sending air or the like to this portion, so that the water drainage inside the nozzle 38 is improved.

As described above, the endoscope 1 according to the present embodiment.
In No. 01, there is less possibility that body fluid, cleaning liquid, dirt, etc. will adhere to or remain in the air / water supply channel including the nozzle 38 and the treatment instrument insertion channel as compared with conventional products, and cleaning, disinfection, The sterility is improved, which is extremely beneficial for hygiene. Further, since the water-repellent treatment layer 9 is applied to the inner surface of the treatment instrument insertion channel, the friction of the treatment instrument is reduced, the insertion force when inserting the treatment instrument is reduced, and the treatment instrument can be easily inserted. .

FIG. 19 shows a tenth embodiment of the present invention. The present embodiment shows an example in which the water repellent treatment layer is applied to an endoscope with a treatment instrument raising device. As shown in (a) of FIG. 19, the distal end portion 121 of the endoscope is a metal main body 122.
And a cover 123 fitted to the main body 122. The cover 123 is formed of a synthetic resin material such as epoxy, polycarbonate, or polysulfone, and the main body 122 has a metallic treatment instrument inductor 125.
Is formed in the induction chamber 124. One end of the treatment instrument guider 125 has a pin 12 on the bottom of the guide chamber 124.
It is pivotally attached via 6. Further, the distal end of the operation wire 127 is attached to the free end of the treatment instrument guide 125. Then, the proximal end portion of the operation wire 127 passes through a wire guide hole 128 formed in the endoscope insertion portion (not shown) along the longitudinal direction thereof and serves as a raising knob in the endoscope operation portion (not shown). It is connected.

The guide chamber 124 for accommodating the treatment instrument guide 125 has a through passage 12 formed in the axial direction of the main body 122.
The treatment instrument 132 introduced into the endoscope insertion portion via
To the insertion channel 130 for inserting the. The through passage 129 and the insertion channel 130 form a treatment instrument insertion passage that guides the treatment instrument 132 into the guide chamber 124. The insertion channel 130 is
It is provided over the inside of the endoscope insertion portion and the operation portion, and communicates with a treatment instrument insertion hole provided in the endoscope operation portion.

On the other hand, the wire guide hole 128 is formed by the wire guide tube 131, and reaches the portion of the raising operation mechanism (not shown) provided in the operation portion. And
When the raising knob of the operation unit (not shown) is rotated, the operation wire 127 is pushed and pulled to rotate the treatment instrument guide 125 in the guide chamber 124. If the pushing / pulling amount of the operation wire 127, that is, the turning amount of the raising knob is changed, the turning angle of the treatment instrument guide 125 changes,
In response to this, the treatment tool 132 is led out of the endoscope.
The derivation direction of can be changed.

In this embodiment, the outer surface of the treatment instrument guide 125, the outer surface of the operating wire 127, and the inner surface of the wire guide tube 131 are respectively repellent for improving the cleaning property, the disinfecting property, and the sterilizing property. A water treatment layer 9 is provided. That is, the water repellent treatment layer 9 is formed on the outer surface of the metallic treatment tool inductor 125 by depositing a composite of graphite fluoride and nickel by dispersion plating. In addition, similarly, as shown in FIG.
As shown in (b), the water repellent treatment layer 9 is formed by depositing a composite of graphite fluoride and nickel by dispersion plating. On the other hand, a wire guide tube 131 made of synthetic resin
Like the channel tube 43 of the ninth embodiment, a thin metal layer 120b of nickel or the like is provided on the surface of the base material 120a on the inner surface of, and the outer surface of the thin metal layer 120b is made of graphite fluoride and nickel by dispersion plating. A water repellent layer 9 is formed by depositing a composite.

The treatment instrument guider 12 configured as described above.
5, the operation wire 127 and the wire guide tube 131 are brought into contact with the treatment tool 132 to which body fluid or body fluid adheres when performing diagnosis and treatment after inserting the endoscope into the body cavity. However, the outer surface of the treatment instrument guide 125, the outer surface of the operating wire 127, the wire guide tube 1
Since the inner surface of 31 is the water repellent treatment layer 9 of graphite fluoride having water repellency, the surface energy is extremely low. Therefore, the contact angle of the substances existing on these surfaces becomes large, and the possibility that body fluid or the like will adhere and remain will be reduced.

As described above, in the endoscope having the above-described structure, body fluid, dirt, etc. adhere to or remain on the treatment instrument guide 125, the raising operation wire 127, and the wire guide tube 131 as compared with the conventional products. There is little possibility that it will be damaged, and cleaning, disinfection and sterilization are improved, which is extremely beneficial for hygiene. Further, the friction between the treatment instrument guide 125 and the treatment instrument is reduced, and the treatment instrument can be easily inserted.

FIG. 20 shows an eleventh embodiment of the present invention. This embodiment shows an example in which the water repellent layer is applied to the branch portion of the conduit of the endoscope. FIG. 20 shows 1 in FIG.
33 shows an internal structure near a treatment instrument insertion port indicated by 33.

As shown in the figure, a branch pipe body 135 is hermetically connected to the base end of the channel tube 43 via a connection body 134. The branch pipe body 135 includes a substantially linear main passage 136 communicating with the channel tube 43,
A branch passage 137 branched from the main passage 136 and connected to a suction tube (not shown), and an insertion port body 13
8 and. A forceps plug 140 having a slit 140a in the center is fitted and attached to the insertion opening 139 at the end of the insertion opening body 138.

Then, the inner surface of the branch pipe body 135 and the forceps plug 1
On the outer surface of 40, as in the ninth and tenth embodiments,
Directly by dispersion plating or through a metal thin film layer,
A composite of graphite fluoride and nickel is deposited to form the water repellent treatment layer 9.

The application of the water repellent treatment layer 9 to the endoscope channel body is not limited to the branch tube body 135 and the forceps plug 140. That is, the water-repellent layer 9 can be applied to the suction tube and the tube body connected to the water supply tank 109, the suction pump 110, and the suction bottle 111 shown in FIG.
In this case, the water repellent layer 9 may be applied to the inner surfaces of the water supply tank 109 and the suction bottle 111.

FIG. 21 shows a twelfth embodiment of the present invention. This embodiment shows an example in which the water repellent layer is applied to the outer surface of the endoscope insertion portion. As shown in FIG. 21A, the water repellent treatment layer 9 described above is formed on the outer surface of the insertion portion 103 of the endoscope 101. That is, FIG.
As shown in (b) of FIG.
A thin film metal layer 143 is formed on the entire outer surface of 42, and a water repellent treatment in which the above-mentioned composite of graphite fluoride and nickel is deposited by dispersion plating on the entire outer surface of the thin film metal layer 143. Layer 9 has been formed.

When the endoscope 101 thus constructed is inserted into the body cavity of the patient, the patient's body fluid, dirt, etc. come into contact with the outer surface of the insertion portion 103. However, since the water repellent treatment layer 9 of graphite fluoride having water repellency is formed on the outer surface of the insertion portion 103, the surface energy is extremely low, and body fluid, dirt, etc. remain on the outer surface of the insertion portion 103. Hard to do. In addition, even if they remain, they can be easily removed by washing these body fluids and dirt immediately after use.

As described above, the endoscope 1 according to the present embodiment.
In No. 01, since the water-repellent treatment layer 9 is provided all around the outer surface of the insertion portion 103, there is less possibility that body fluids, dirt, etc. will adhere or remain, compared with conventional products, and cleaning, disinfection, The sterility is improved and it becomes more hygienic. Also,
Since the water repellent treatment layer 9 is applied to the outer surface of the insertion portion 103, the slipperiness with a living body is improved and the insertability is improved.

FIG. 22 shows a thirteenth embodiment of the present invention. This embodiment shows an example in which the water repellent treatment layer is applied to a high frequency treatment device. A detect probe as a high-frequency treatment instrument is shown in FIG.

The rejecting device 144 is a sheath 145 which is elongated and has an optical tube for observation (not shown) inserted therein.
And an operation part 146 mounted on the rear part of the sheath 145.
It is composed of and.

On both sides of the sheath 145, two stabilizers 147, 147 made of a pipe material are provided side by side.
The electrode wires 14 are provided inside the stabilizers 147 and 147.
8 is inserted. The tip end side of the electrode wire 148 projects from the tip end opening of the stabilizers 147, 147 to form a semicircular loop.

Further, the A-code 150 is led out from the slider 149 provided on the operation section 146, and the base 151 is provided at the tip of the A-code 150. The base 151 is fixed to the base insertion portion 153 of the adapter 152 with an insertion screw 154. The adapter 152 is connected to a high frequency ablation power supply device (not shown).

22B is an enlarged view of the tip of the electrode wire 148, and FIG. 22C is a sectional view of the electrode wire 148. On the outer surface of the electrode wire 148, a water repellent treatment layer 9 is provided on which is fixed a powder or fiber of fluororesin or fluororesin obtained by substituting fluorine at the terminal hydrogen of the fluororesin by dispersion plating. In the water repellent layer 9, the metal layer in which the fluororesin is dispersed has electrical conductivity,
It can be used in the same manner as in the past.

Rejecting device 144 thus configured
A high-frequency current is passed through the electrode wire 148 at the tip, and is used for ablation of tissue in the body cavity, for example, ablation of the enlarged prostate. At this time, normally, cauterized tissue, body fluid or the like adheres to the electrode wire 148.
Since the water repellent treatment layer 9 having water repellency is provided on the outer surface of the electrode 48, the surface energy is extremely low and the contact angle of the substance existing on the surface is large.
It is extremely unlikely that the cauterized tissue is burnt on the outer surface of 48 and that body fluid or the like is attached. Further, even if these are attached, they can be easily removed.

As described above, unlike the conventional electrode wire, which is a simple metal, the rejecting device 144 of this embodiment has the surface of the water repellent treatment layer 9 having excellent electric conductivity and water repellency. Electrode wire 1 at the tip because it has
The occurrence of a cauterized structure on the outer surface of 48 is extremely reduced. In addition, even if these are burned, they can be easily removed. Needless to say, instead of the fluororesin, graphite fluoride having higher water repellency may be used. In this case, seizure of the tissue is reduced, and even if seizure occurs, it can be easily removed.

FIG. 23 shows a fourteenth embodiment of the present invention. This example shows an example in which the water repellent treatment layer is applied to another high-frequency treatment tool. FIG. 23 shows a snare 157 as a high-frequency treatment instrument. The snare 157 has a hollow sheath 155, and an operation wire 156 is inserted through the inner hole of the sheath 155. Further, a snare wire 157 as an electrode is provided at the tip of the operation wire 156.
a is connected. The snare wire 157a projects on the tip side to form a semicircular loop. The water repellent layer 9 is formed on the outer surface of the snare wire 157a by dispersion plating, as in the thirteenth embodiment. That is, on the outer surface of the snare wire 157a, the water repellent layer 9 is provided on which the powder or fiber of the fluororesin or the fluororesin obtained by substituting fluorine at the terminal hydrogen of the fluororesin with dispersion plating is fixed. Needless to say, graphite fluoride having higher water repellency may be used instead of the fluororesin.

The snare 157 having the above-described structure applies a high-frequency current to the snare wire 157a at the tip, and is used for cutting polyps or the like. As described above, since the water repellent treatment layer 9 is provided on the outer surface of the snare wire 157a, the cauterized tissue is not burned or the body fluid or the like is less likely to adhere thereto. In addition, even if body fluid or the like should adhere, it can be easily removed.

FIG. 24 shows a fifteenth embodiment of the present invention. This embodiment shows an example in which the water repellent layer is applied to hot biopsy as a high frequency treatment tool. The hot biopsy shown in (a) of FIG.
58 and a metallic cup 159 provided at the tip of the probe 158, and the cup 159 has a structure that can be opened and closed by a hand side operation unit (not shown). The water-repellent layer 9 in which a composite of graphite fluoride and nickel is deposited by dispersion plating is formed on the entire surface of the cup 159.

The hot biopsy thus constructed is also used for tissue biopsy in a body cavity. That is, after inserting the hot biopsy into the body cavity, a cup 159 is opened and closed by operating a hand operation unit (not shown), and a high-frequency current is passed through the cup 159 to remove the tissue in the body cavity and perform a biopsy. Here, since the water-repellent treatment layer 9 is applied to the entire surface of the cup 159, the doctor or the nurse can easily remove the collected tissue in the cup 159 after the biopsy. In addition, it becomes easy to wash the cup 159 after use.

As described above, in the hot biopsy of this embodiment, since the water-repellent treatment layer 9 is applied to the entire surface of the metallic cup 159, the collected tissue after biopsy is removed or after use. Cleaning of the cup 159 is facilitated. It should be noted that, as shown in FIG. 24B, the cup 159 does not need to be coated with the water repellent layer 9 on the entire surface of the cup 159.
The water-repellent treatment layer 9 may be applied only to the inner surface (holding surface) of the. Further, as a high-frequency treatment instrument to which the water repellent treatment layer 9 can be applied, there is, for example, a papillotomy knife in addition to the above-mentioned respective embodiments.

FIG. 25 shows a sixteenth embodiment of the present invention. This example shows an example in which the water repellent layer is applied to a laser probe. The laser probe shown is
Flexible long optical fiber (laser guide) 16
0 and a metal contact member 161 having a substantially oval shape attached to the tip of the optical fiber 160.

An annular locking member 162 is fitted on the outer circumference of the front end of the optical fiber 160, and a mountain-shaped projection 163 is provided on the outer peripheral surface of the locking member 162 so as to project over the entire circumference thereof. Also, a locking member 162 is provided at the base end of the contact member 161.
An accommodating recess 164 for inserting the groove is formed, and a groove 165 that engages with the protrusion 163 of the locking member 162 is formed on the inner peripheral surface of the accommodating recess 164 over the entire circumference.
Therefore, the contact member 161 in which the groove 165 is locked to the protrusion 163 of the locking tool 162 is axially fixed to the locking tool 162 and is rotatable in the circumferential direction.

Further, the tip of the optical fiber 160 is provided at the emitting portion 16 where the core 160b in the clad 160a is exposed.
It is 6. The emitting portion 166 is arranged in the internal space 167 of the contact member 161. Then, the emitting section 16
Since the tip of 6 is cut diagonally,
An emission end face 168 inclined in one direction is formed at 6. The base end of the optical fiber 160 is connected to a laser generator (not shown).

Also in the case of this embodiment, the water repellent treatment layer 9 in which the composite of graphite fluoride and nickel is deposited by dispersion plating is formed on the entire surface of the contact member 161.

The laser probe thus constructed is irradiated with laser light from the emitting portion 166 of the optical fiber 160 when it reaches the treatment site after being inserted into the body cavity.
This laser light is emitted from the internal space 167 of the contact member 161 toward one side thereof, and is absorbed by the contact member 161. One side of the contact member 161 which has absorbed the laser light is locally heated. Therefore, the contact member 161
The lesion can be cauterized reliably by contacting the heated part of the lesion with the lesion. At this time, since the water-repellent treatment layer 9 is provided on the entire outer surface of the contact member 161, a cauterized tissue is seized on the outer surface of the contact member 161,
It is possible to avoid a situation in which body fluid or the like is attached. Further, even if it adheres, it can be easily removed.

As described above, in the laser probe of this embodiment, since the water repellent treatment layer 9 is provided on the outer surface of the contact member 161 at the tip, the seizure of the cauterized tissue is reduced. Further, even if it sticks due to burning, it can be easily removed.

As an example of applying the water-repellent layer 9 to a laser probe, a structure as shown in FIG. 26 can be considered in addition to the above structure. That is, FIG.
The laser probe has a tip 169 made of a light-transmitting sapphire chip or the like connected to the tip of the sheath 370. The optical fiber 160 is inserted into the sheath 370, and the tip emission portion of the optical fiber 160 is the sheath 370.
It is held by a holding member 371 fitted to the tip of the. The tip mounting member 37 is attached to the tip of the holding member 371.
2 is screwed, and the tip 169 is held by the holding portion 372a of the tip mounting member 372. Also in this case, the water repellent layer 9 is formed on the entire surface of the tip chip 169. This water repellent treatment layer 9 is
A thin film metal layer 143 is provided on the outer surface of the tip 169.
It is formed by depositing a composite of graphite fluoride and nickel on its outer surface. Even with such a configuration, it is possible to obtain the same operational effect as the laser probe of FIG. 25 described above.

FIG. 27 shows a seventeenth embodiment of the present invention. This embodiment shows an example in which the water repellent layer is applied to a heat probe used for hemostasis. As shown in (a) of FIG. 27, the heat probe 170 is composed of a connector portion 171 connected to a control device (not shown), a long sheath portion 172, and a tip portion 173 that generates heat. FIG. 27B is an enlarged view of the tip portion 173. As shown in the figure, a water repellent treatment layer 9 formed by depositing a composite of graphite fluoride and nickel is provided on the outer surface of the tip portion 173.

With such a structure, seizure of the tissue on the outer surface of the tip portion 173 can be prevented, and cleaning / disinfection is facilitated. FIG. 28 shows an eighteenth embodiment of the present invention. This embodiment shows an example in which the water repellent layer is applied to a contamination prevention cover of an endoscope.

As shown in FIG. 28 (a), an endoscope cover type endoscope 174 has a combination of an endoscope cover 175 and a cover endoscope 176 mounted on the cover 175. Made of When performing an endoscopic examination, a characteristic feature is that a clean cover 175 covers the insertion portion of the cover endoscope 176 and the like and is repeatedly used. This eliminates the need for cleaning and disinfecting the endoscope after the inspection. The operating portion 177 and the universal coat 178 are covered with an operating portion cover portion 179 and a universal cord cover portion 180 which are made of a thin and soft polymer material such as vinyl chloride.

As shown in FIG. 20B, a cover endoscope 176 is covered with a cover 175. The cover 175 has an air supply pipe 181 and a water supply pipe 18 made of a PTFE tube (polytetrafluoroethylene tube) or the like.
2, a suction conduit 183 and an endoscope insertion channel 184 through which the endoscope is inserted are provided, and their tip ends are connected by a cover tip 185 made of a hard resin or the like. The air supply pipe 181 and the water supply pipe line 182 join together at the tip side to form a single pipe line. Also, the cover 175
At the base end portion of the above, an endoscope operation portion fixing mouth portion 186 formed of a hard resin or the like for connecting and fixing the cover 175 and the cover endoscope 176 is provided. And
Cover tip portion 185 and mouthpiece portion 186 for fixing endoscope operation portion
And are hermetically connected by an insertion portion cover 187 made of a thin and flexible polymer material that isolates the insertion portion 176a of the cover endoscope 176 from the external environment. The suction passage 183 also serves as a forceps channel through which forceps or the like is inserted. That is, the forceps insertion opening 18 provided in the mouth portion 186.
The forceps or the like is introduced into the suction passage 183 from the position 8.

On the other hand, the insertion portion 17 of the cover endoscope 176.
6a includes a flexible tube portion 192, a bending portion 191 connected to the tip of the flexible tube portion 192, and a hard tip portion 190 connected to the tip of the bending portion 191. Tip 190
Is provided with an observation optical system 189 and an illumination optical system (not shown). An image pickup element 193 is provided at the image forming position of the observation optical system 189, and the image pickup element 193 is connected to a video processor (not shown) via a signal cable. An observation window 194 and an illumination window are provided in the cover tip portion 185 so as to oppose the observation optical system 189 and the illumination optical system (not shown) of the insertion portion 176a of the cover endoscope 176 so as to transmit light. ing.

Further, as shown in FIG. 29, the cover 175
The water repellent layer 9 is formed on the inner surface of the endoscope channel 184. The water-repellent layer 9 is formed by providing a thin film metal layer 143 on the inner surface of the endoscope channel 184 and depositing graphite fluoride or a composite of fluorine resin and nickel on the outer surface thereof. In the conventional cover-type endoscope, air or the like is injected into the inner hole of the cover to inflate it, and a long cover endoscope is attached / detached in the as-injected state.

The cover-type endoscope 17 configured as described above
4 is a long endoscope insertion channel 18 of the cover 175.
The endoscope 176 for a cover is inserted in 4 and it fixes and uses it. At this time, since the water repellent treatment layer 9 is formed on the inner surface of the endoscope insertion channel 184 as described above, the cover endoscope 176 is inserted into the endoscope insertion channel 18.
The frictional resistance during insertion into 4 is greatly reduced, facilitating this type of work by a doctor or a nurse. Also,
After the inspection with the cover-type endoscope 174, the cover endoscope 176 is pulled out from the endoscope insertion channel 184 and only the cover 175 is discarded, but the frictional resistance at the time of this withdrawal is greatly reduced and can be easily performed. It will be.

As described above, in the cover type endoscope 174 of this embodiment, since the water repellent treatment layer 9 is formed on the inner surface of the endoscope insertion channel 184, the cover endoscope before the inspection. It is easy to attach the cover or remove the cover endoscope after the inspection. As in the conventional case, a fluid such as air is wiped into the cover 175 every time when the cover 175 is attached or detached to expand the cover 175. There is no need to increase the diameter, which saves labor. Further, along with this, a dedicated air injection device is also unnecessary.

Although collectively shown in FIG. 29,
The water repellent layer 9 covers the cover 175 of the endoscope insertion channel 1.
Not only the inner surface of 84, but also the inner surfaces of the forceps insertion port 188, the suction conduit 183, the air supply conduit 181, the water supply conduit 182, and the like may be provided to reduce the amount of insertion force of the treatment tool or the like.

Further, the water-repellent layer 9 may be provided on the entire outer surface of the cover 175 to help reduce the friction with the body conduit wall when it is inserted into the body cavity. This leads to less pain for the patient.

As described above, the cover 175 may be molded by mixing fluororesin or graphite fluoride in the soft resin material without providing the water repellent layer 9 on the inner peripheral surface of the cover 175. In this case, since the material itself that forms the cover 175 has water repellency and slipperiness, the water repellent treatment layer 9 is formed on the inner and outer peripheral surfaces of the cover 175 by an operation such as plating.
Since it is not necessary to provide, it becomes easy to manufacture.

By the way, there is a case where an endoscope cleaning apparatus is used as a method for cleaning the above-described body cavity insertion tool. This endoscope cleaning device is a device that automatically performs cleaning and disinfection after setting the object to be cleaned in the device,
There has been a problem in treating water drops remaining in the cleaning tank due to cleaning and the like.

For example, in JP-A-3-261435, the inner surface of the cleaning tank of the cleaning device is covered with a hydrophilic treatment layer,
A cleaning device has been proposed in which after cleaning and drying a cleaning object such as an endoscope, water drops do not drip from the inner surface of the cleaning tank to contaminate the cleaning object.

However, if a hydrophilic treatment layer is provided on the inner surface of the cleaning tank of the endoscope cleaning apparatus, water drops will not be dropped on the endoscope, but the cleaning / drying property of the inner surface of the cleaning tank will deteriorate, and There are various problems such as bacteria growing on the surface inside the tank, or the cleaning liquid adhering to the inside surface of the cleaning tank mixes with the disinfectant solution, diluting the disinfectant solution and reducing the effective use period and number of times of effective use of the disinfectant solution. there were.

Therefore, as described below, if the water repellent treatment layer 9 is provided on the inner surface of the cleaning tank, the cleaning performance and operability of the endoscope cleaning apparatus can be improved. That is, FIG.
In the figure, 201 is an endoscope cleaning apparatus, and 202 is an apparatus main body of the endoscope cleaning apparatus. This device body 202
A cleaning layer 203, which also serves as a temporary water storage, is provided on the upper part of the. The upper surface of the cleaning layer 203 is opened, and the upper opening of the cleaning layer 203 is opened and closed by a cover 204 provided on the upper surface of the apparatus main body 202. Further, as shown in FIG. 31, an operation panel 205 of the endoscope cleaning apparatus 201 is provided on the upper front surface of the apparatus main body 202. The water repellent layer 9 is provided on the inner surfaces of the cleaning tank 203 and the cover 204.

Further, in the cleaning tank 203, a rotary nozzle tower 206 is arranged at the central portion. This rotating nozzle tower 2
Reference numeral 06 denotes a rotary body 206a, and the injection nozzles 20 projecting from the upper and lower sides of the rotary body 206a in the centrifugal direction.
6b and 206c. In this case, the upper spray nozzle 206b sprays the cleaning liquid downward, and the lower spray nozzle 206c sprays the cleaning liquid upward. The endoscope in the cleaning tank 203 is set between the upper and lower injection nozzles 206b and 206c.

Further, the rotating body 2 of the rotating nozzle tower 206
06a is rotatably driven by, for example, a drive motor (not shown), and the upper and lower injection nozzles 206b and 206c are rotatively driven along with a predetermined circular orbit along with the rotating body 206a.

Furthermore, on the upper part of the apparatus main body 202, a disinfectant liquid injection pipe 207 for injecting a disinfectant liquid into the cleaning tank 203, a tap water injection pipe 208 for injecting tap water, and a cleaning tank 203.
The float switches 209 inside are respectively attached. A drain port 210 is provided on the inner bottom of the cleaning tank 203.

Further, inside the apparatus main body 202, a water tank 211a and a disinfecting solution tank 211b for storing a cleaning liquid composed of tap water are provided. In this case, the cleaning liquid is supplied to the water tank 211a from the tap (cleaning liquid supply source) 212 of the water supply, through the water supply pipe line 213, and through the water supply valve 214. And the water tank 211
The supply amount of tap water into the inside of a is adjusted by the water supply valve 214.

The water tank 211a is connected to one end of each of the first cleaning water supply pipeline 215 and the second cleaning water supply pipeline 216. A first pump 217 is provided in the first wash water supply pipe 215, and the other end of the first wash water supply pipe 215 is connected to a tap water injection pipe 208. Further, a second pump 218 is interposed in the second cleaning water supply pipe line 216, and the other end of the second cleaning water supply pipe line 216 is connected to the rotary nozzle tower 206.

Further, one end of a disinfectant solution supply pipeline 219 is connected to the disinfectant solution tank 211b. A disinfectant solution pump 220 is provided in the disinfectant solution supply pipeline 219, and the other end of the disinfectant solution supply pipeline 219 is provided at the disinfectant solution injection tube 2
It is connected to 07.

Further, one end of a drain pipe line 221 is connected to the drain port 210 of the cleaning tank 203. This drain line 2
21 is a conduit switching valve 222 and this conduit switching valve 222
The drainage pumps 223 are respectively installed on the downstream side of the.

Further, one end of the disinfecting liquid recovery pipe 224 is connected to the pipe switching valve 222. The other end of the disinfectant solution collecting line 224 is connected to the disinfectant solution tank 211b. Then, along with the switching operation of the conduit switching valve 222,
When the drainage port 210 is closed (the liquid is stored in the cleaning tank 203), the drainage port 210 and the disinfectant solution collecting line 224.
And the disinfectant solution in the cleaning tank 203 is collected in the disinfectant solution tank 211b, or the drain port 21
0 and the drainage pipe 221 are communicated with each other, and the liquid in the cleaning tank 203 is switched to a state where the liquid is drained from the drainage pipe 221.

In the method of forming the water repellent treatment layer 9 described above, when the target is a metal material, composite plating of direct fluorinated graphite and metal (for example, nickel, copper, tin metal or alloys thereof) is performed. It is formed.

When the object is a non-metal (for example, plastic), a metal foil is printed on the surface of the material by the hot stamping method, a metal layer is formed by chemical plating such as electroless plating, or CVD is performed. After the surface of the object is made electrically conductive by vapor-depositing a metal by vapor deposition such as PVD or PVD, or by coating with electrically conductive paint, the water-repellent treatment layer 9 is formed by performing the composite plating as described above. Form.

When the object is made of plastic or rubber, the same effect as the formation of the water repellent treatment layer 9 can be obtained by molding the material in which graphite fluoride is dispersed in plastic or rubber. can get. Alternatively, plastic or rubber in which graphite fluoride is dispersed may be molded on an ordinary molded product of plastic or rubber. Also, the same effect can be obtained by painting the object with a dispersion of graphite fluoride in the paint.

FIG. 32 shows a state in which the endoscope 225 is set in the endoscope cleaning apparatus 201 having the above-described structure, and then the cover 204 is closed to clean the endoscope 225. Cleaning with the endoscope cleaning apparatus 201 is performed as follows.

First, tap water supplied from the faucet 212 is temporarily stored in the water tank 211a. Then, for example, when the endoscope is washed or rinsed, the first pump 21 is used.
7 and the second pump 218 are driven. At this time,
The cleaning water in the water tank 211a is injected into the cleaning tank 203 through the first cleaning water supply pipe 215 and the tap water injection pipe 208 as the first pump 217 is driven.

Further, as the second pump 218 is driven, the rotary nozzle tower 2 is passed through the second cleaning water supply pipe 216.
The cleaning water supplied to the 06 is the upper and lower jet nozzles 206b,
It is injected to the endoscope 225 in the cleaning tank 203 via 206c.

Further, during the disinfecting process of the endoscope housed in the cleaning tank 203, the cleaning water in the cleaning tank 203 is drained.
After being drained from 0 to the drain pipe 221 side, the pipe switching valve 2
The drain port 210 is closed along with the switching operation of 22, and the disinfection pump 220 is driven in this state. At this time, the water repellent treatment layer 9 is formed on the inner surfaces of the cleaning tank 203 and the cover 204.
Is provided, the cleaning layer 203 and the cover 20 are provided.
No cleaning liquid remains in the form of water drops on the surface of No. 4. Therefore, when the disinfectant solution is injected into the cleaning tank 203 in the next step, the disinfectant solution is not diluted by the cleaning solution. Further, the drainage time of the cleaning liquid can be shortened because the drainage property is improved.

As the disinfection pump 220 is driven, the disinfectant solution in the disinfectant solution tank 211b is guided to the disinfectant solution injection pipe 207 side through the disinfectant solution supply pipe 219 and injected into the cleaning tank 203 from this disinfectant solution injection pipe 207. Be stored. Therefore, the endoscope 225 in the cleaning tank 203 is immersed and disinfected in the disinfectant solution. At this time, by rotating the rotating nozzle tower 206, the disinfecting liquid accumulated in the cleaning tank 203 can be stirred to improve the disinfecting property of the endoscope.

Further, when the disinfectant solution is within the effective period after the disinfection step, the conduit switching valve 222 is switched to a state in which the drain port 210 and the disinfectant solution recovery conduit 224 communicate with each other, and the cleaning tank 203. The disinfectant solution inside is the disinfectant solution tank 211.
Recovered in b. Even at this time, due to the effect of the water-repellent treatment layer 9, the disinfectant solution does not remain on the inner surfaces of the cleaning tank 203 and the cover 204, and the disinfectant solution is almost contained in the disinfectant solution tank 21.
Recovered in 1b.

During the effective period of the disinfectant solution, the disinfectant solution tank 21
The disinfectant solution in 1b is supplied into the cleaning tank 203 through the disinfectant solution supply line 219 and the disinfectant solution injection line 207, and then is disinfected from the drain port 210 through the line switching valve 222 and the disinfectant solution recovery line 224. The circulation between the disinfecting liquid tank 211b and the cleaning tank 203 is repeated in the state of being collected in the liquid tank 211b.

Here, when the effective period of the disinfecting liquid has expired, the conduit switching valve 222 causes the drain port 210 and the drain conduit 221.
The cleaning tank 20 is switched to a state in which the cleaning tank 20 communicates with the cleaning tank 20.
The disinfecting liquid in 3 is drained from the drainage line 221.

When the endoscope 225 is taken out from the endoscope cleaning apparatus 201, water droplets do not remain on the inner surface of the cover 204, so that water droplets are removed from the cover 204.
It does not drip up and does not stain the endoscope.

As described above, by forming the water-repellent layer 9 on the inner surfaces of the cleaning tank 203 and the cover 204 of the endoscope cleaning apparatus 201, the disinfectant solution is not diluted with the cleaning solution. Moreover, the drainage performance is high and the drainage time is shortened. Furthermore, the endoscope 225 is not contaminated by the dripping of water drops or the like from the cover 204 after the cleaning is completed.

Further, the water-repellent layer 9 is not limited to the cleaning tank 203 and the cover 204, but also the rotary nozzle tower 206, the tap water injection pipe 208, the disinfecting liquid injection pipe 207, and the float switch 2.
09 may be provided. In this case, the effects such as shortening of the cleaning time and prevention of thinning of the disinfecting liquid by the cleaning liquid can be achieved.

Furthermore, the piping system of the endoscope cleaning device 201, for example, the water tank 211a, the disinfectant solution tank 211b,
Water supply conduit 213, water supply valve 214, first cleaning water supply conduit 215, second cleaning water supply conduit 216, first pump 2
17, second pump 218, disinfectant solution supply line 219, disinfectant solution pump 220, drainage line 221, line switching valve 22
2, the water repellent treatment layer 9 may be provided on the inner surface of the drainage pump 223, the disinfecting liquid recovery conduit 224, and the like. In this case, in addition to improving the drainage property at the time of waste liquid, adhesion of various bacteria to the pipe system is suppressed, and mixing of various bacteria into the endoscope 225 is suppressed.

According to the present invention, various configurations shown in the following items can be obtained by the above-described modes. 1. An intracorporeal insertion tool characterized in that a water repellent treatment layer in which particles or fibers of a fluorine compound are dispersed in a metal or polymer matrix is provided on at least a part of the inner and outer peripheral surfaces.

2. The intracorporeal insertion tool according to item 1, wherein the fluorine compound is a fluororesin. 3. The intracorporeal insertion tool according to item 1, wherein the fluorine compound is graphite fluoride.

4. The body cavity inserter according to the second aspect, wherein the metal is nickel or a nickel alloy. 5. The body cavity inserter according to item 1, wherein the metal is copper or a copper alloy.

6. The body cavity inserter according to item 1, wherein the metal is tin or a tin alloy. 7. The intracorporeal insertion tool according to item 1, wherein the polymer is plastic.

8. The intracorporeal insertion tool according to item 1, wherein the polymer is rubber. 9. A treatment tool comprising a hollow tubular sheath, a treatment section provided at the distal end of the sheath, and an operation section provided at the proximal end side of the sheath, wherein a water-repellent treatment layer is provided on at least a part of the inner and outer peripheral surfaces thereof. A treatment tool characterized by being provided.

10. A hollow tubular sheath, a treatment portion provided at the distal end of the sheath, an operation portion provided at the proximal end side of the sheath, and a treatment portion provided at the distal end side of the sheath so as to be movable back and forth inside the sheath. A treatment instrument comprising an operation shaft which is connected to the operation portion and which is connected to the operation portion on the proximal end side of the sheath, wherein a water repellent treatment layer is provided on at least a part of the surface thereof.

11. An in-vivo insertion aid having a hollow tubular lumen that is inserted into a body cavity and through which an endoscope, a treatment tool or the like is inserted, and that a water-repellent treatment layer is provided on at least a part of the inner and outer peripheral surfaces thereof. A characteristic in-vivo insertion aid.

12. An endoscope which is used by being inserted into a body cavity, wherein a water repellent treatment layer is provided on at least a part of the inner and outer peripheral surfaces of the endoscope. 13. In a thermal treatment device for contacting a living body and thermally treating an affected area after insertion into a body cavity, a heat treatment characterized in that a water-repellent treatment layer is provided on at least a part of the contacting area that contacts tissue. Therapeutic device.

14. An endoscope used by being inserted into a body cavity, wherein a water-repellent treatment layer is provided on at least a part of an optical member thereof. 15. In a disposable endoscope for an endoscope which is provided on the outer surface of an endoscope and insulates the endoscope from an external polluted environment, a water-repellent treatment layer is provided on at least a part of the inner and outer surfaces thereof. Disposable sheath for endoscopes.

[0154]

As described above, the instrument for insertion into a body cavity of the present invention has good cleanability and excellent insertability and slipperiness.

[Brief description of drawings]

FIG. 1 is an explanatory view showing the structure and action of a water repellent treatment layer according to the present invention.

FIG. 2A is a side sectional view of the endoscope injection device according to the first embodiment of the present invention, and FIG. 2B is a sectional view taken along the line AA of FIG.

FIG. 3A is a perspective view of an endoscope treatment tool according to a second embodiment of the present invention, and FIG. 3B is an enlarged cross-sectional view of a coil sheath of the endoscope treatment tool of FIG. .

FIG. 4 is an enlarged view of a distal end portion of the endoscope treatment tool of FIG.

FIG. 5 is a side sectional view of a contrast agent injection tube according to a third embodiment of the present invention.

FIG. 6 is a sectional view of a distal end portion of an endoscope according to a fourth embodiment of the present invention.

FIG. 7 is a sectional view of a distal end portion of an endoscope according to a fifth embodiment of the present invention.

FIG. 8 is a sectional view of a distal end portion of an endoscope according to a sixth embodiment of the present invention.

9 is an explanatory diagram for explaining the operation of the configuration of FIG. 8. FIG.

10 is an explanatory diagram for explaining a defect of a conventional configuration, which is compared with the configuration of FIG.

FIG. 11 is a sectional view of a rigid endoscope according to a seventh embodiment of the present invention.

FIG. 12 is a view showing a state where the endoscope of FIG. 11 is introduced into a body cavity via a trocar.

FIG. 13 is a schematic view of a trocar according to an eighth embodiment of the present invention.

FIG. 14 is a cross-sectional view showing a modified example of the trocar shown in FIG.

15 is a diagram showing a state in which an endoscope is inserted into the trocar of FIG.

FIG. 16 is a schematic diagram of an endoscope system.

FIG. 17 is a sectional view of a distal end side portion of an electronic endoscope according to a ninth embodiment of the present invention.

FIG. 18 is a structural diagram of a water repellent treatment layer applied to the endoscope of FIG.

FIG. 19 is a sectional view of an endoscope with a treatment instrument raising device according to a tenth embodiment of the present invention.

FIG. 20 is a cross-sectional view of a branch portion of a duct of an endoscope according to an eleventh embodiment of the present invention.

21A is an overall view of an endoscope according to a twelfth embodiment of the present invention, and FIG. 21B is a partial cross-sectional view of an insertion portion of the endoscope of FIG.

22A is a perspective view of a high-frequency treatment instrument according to a thirteenth embodiment of the present invention, FIG. 22B is an enlarged view of a distal end portion of the high-frequency treatment instrument of FIG. 22A, and FIG. FIG.

FIG. 23 is a sectional view of a high frequency snare according to a fourteenth embodiment of the present invention.

FIG. 24 is a schematic view of a main part of a hot biopsy according to a fifteenth embodiment of the present invention.

FIG. 25 is a cross-sectional view of essential parts of a laser probe according to a 16th embodiment of the present invention.

26 is a cross-sectional view showing another configuration of the laser probe of FIG.

27A is an overall view of a heat probe according to a seventeenth embodiment of the present invention, and FIG. 27B is an enlarged view of a tip portion of the heat probe of FIG.

FIG. 28 is an overall view and a cross-sectional view of a main part of an endoscope contamination prevention cover according to an eighteenth embodiment of the present invention.

29 is a cross-sectional view showing in detail the formation site of the water repellent treatment layer applied to the endoscope contamination prevention cover of FIG. 28.

FIG. 30 is a system diagram of a cleaning device for an endoscope.

31 is a plan view of the endoscope cleaning apparatus of FIG. 30. FIG.

32 is a plan view showing a state where an endoscope is set in the endoscope cleaning apparatus of FIG. 30. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Endoscope injection device (body cavity insertion tool), 9 ... Water repellent treatment layer, 10 ... Endoscope grasping forceps (body cavity insertion tool), 27 ...
Contrast agent injection tube (insertion tool in body cavity), 35 ... Endoscope (insertion tool in body cavity), 41 ... Cover lens, 40a ... Objective lens, 73 ... Trocar (insertion tool in body cavity), 101 ...
Electronic endoscope (insertion tool in body cavity) 144 ... Reject device (insertion tool in body cavity) 157 ... Snare (insertion tool in body cavity),
170 ... Heat probe (insertion tool in body cavity), 175 ... Endoscope cover (insertion tool in body cavity).

Claims (1)

[Claims] 1. A body cavity insertion tool characterized in that a water repellent treatment layer in which particles or fibers of a fluorine compound are dispersed in a metal or polymer matrix is provided on at least a part of the inner and outer peripheral surfaces. .