JP2002233498A - Parts for endoscope and endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide parts for an endoscope which maintain the multifunctionality of the endoscope without increasing the diameter of an insertion portion and makes the insertion of the insertion portion into a lumen easy and sure with a simple structure and the endoscope. SOLUTION: A tube 7 which is closed at its end is installed into a pipeline 16 formed in an insertion portion 2 of an endoscope 1. The tube 7 has a high- friction resistance portion having a coefficient of static friction greater than that of its inside surface in at least a portion of its outside surface. The driving force of a rotary solenoid 4 installed in a control section 3 is transmitted to a striking body 5 by a transmission member 6 installed in the tube 7. The driving body 5 moves the end portion in the tube 7 back and forth and repetitively collides against the closing portion formed at the end of the tube 7, thereby imparting propellant to the insertion portion 2. The pipeline 16 is commonly usable as a medical treatment instrument insertion channel, liquid feed (air feed) channel, suction channel, etc., by removing the tube 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope component and an endoscope.

[0002]

2. Description of the Related Art In the medical field, endoscopes are used for examination, treatment and the like of the digestive tract and the like. Such an endoscope has a long insertion portion to be inserted into a lumen, and an operation portion provided on a proximal end side of the insertion portion, and the insertion portion is provided for a tubular organ (lumen) of a patient. Insert and use inside. The insertion of the insertion portion into the lumen is performed by applying a pushing force or torsion to the proximal end side (hand side) of the insertion portion to advance the insertion portion into the lumen.

[0003] However, since the lumen in the body is complicatedly bent, it is not easy to advance the distal end portion of the long insertion portion only by operating force applied to the base end portion of the insertion portion. In particular,
For example, when inserting deep into a body cavity such as the small intestine or large intestine, the pushing force or torsion applied to the proximal end of the insertion portion is difficult to transmit to the distal end, and therefore, the operation of inserting to the target site is It is difficult and requires a high degree of skill.

Therefore, in order to facilitate such difficult insertion operation, a drive source is provided in the endoscope, and the insertion portion obtains a propulsive force in the direction of the distal end in the lumen by driving the drive source. An endoscope adapted to be used is disclosed in Japanese Patent No. 3009603. An endoscope disclosed in the publication (hereinafter, referred to as an “endless belt type endoscope”) is provided with a driving source in an operation unit, and is provided along an outer peripheral portion of an insertion portion along a longitudinal direction. By driving the endless belt like an endless track by the drive source, the insertion portion is configured to obtain a propulsive force in the direction of the distal end.

However, this endless belt type endoscope has the following disadvantages. First, as compared with the conventional endoscope, there is a disadvantage that the number of parts is greatly increased and the structure is extremely complicated. That is, in the endless belt type endoscope, in addition to the endless belt, a large number of guide hooks for holding four endless belts are provided on the outer peripheral surface of the insertion portion, and inside the insertion portion,
The same number of guide pipes as the endless belts are inserted through the endless belts. Further, the operation unit includes a motor and a gear box for driving the endless belt. Due to such a complicated structure, the endless belt type endoscope has a problem that the manufacturing cost is significantly increased. There is also a problem that care and maintenance of the endoscope become complicated.

Second, as described above, since four dedicated guide pipes for inserting the endless belt into the insertion portion must be provided, there is a disadvantage that the diameter of the insertion portion is increased. . When the diameter of the insertion portion is increased, there is a problem that it becomes impossible to insert the insertion portion into a small lumen, and the burden and pain on the patient increase.

Thirdly, since the endless belt slides against the inner wall of the lumen to obtain a propulsive force, there is a problem that the friction may damage the organ of the patient.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to maintain the multifunctionality of an endoscope without increasing the diameter of an insertion portion,
A simple structure, in which the insertion portion obtains a propulsive force in the distal direction within the lumen, assists the advancement of the insertion portion, thereby facilitating insertion into the lumen easily and reliably. To provide an endoscope component and an endoscope that can be used.

[0009]

This and other objects are achieved by the present invention which is defined below as (1) to (19).

(1) An endoscope component having an insertion portion having a conduit formed therein, which is used by being inserted into the conduit and having a hollow portion extending in the longitudinal direction therein. An endoscope component having a high frictional resistance portion having a static friction coefficient larger than a static friction coefficient of an inner surface on at least a part of an outer surface.

[0011] Thus, the endoscope is maintained multifunctional without increasing the diameter of the insertion section, and is provided with a propulsive force toward the distal end of the insertion section with a simple structure to advance the insertion section. An endoscope component that can assist and provide an endoscope that can easily and reliably perform an insertion operation into a lumen is obtained.

(2) The endoscope component according to the above (1), wherein the endoscope component has the high friction resistance portion at least near the distal end.

[0013] This makes it possible to more easily and reliably perform the insertion operation of the insertion portion.

(3) The endoscope component according to (1) or (2), wherein the difference between the static friction coefficient of the high friction resistance portion and the static friction coefficient of the inner surface is 0.08 or more. .

This makes it possible to more easily and reliably perform the insertion operation of the insertion portion.

(4) The endoscope component according to any one of (1) to (3), wherein the vicinity of the inner surface is made of a fluorine resin.

This makes it possible to more easily and reliably perform the insertion operation of the insertion portion.

(5) The above (1) to (4), wherein at least a part of the outer surface is subjected to a surface roughening treatment.
The endoscope component according to any one of the above.

Thus, the insertion operation of the insertion portion can be performed more easily and reliably.

(6) The endoscope component, wherein the hollow portion is sealed near the distal end thereof (1) to (5).
The endoscope component according to any one of the above.

This makes it possible to more easily and reliably perform the insertion operation of the insertion portion.

(7) The endoscope component according to any one of (1) to (6), which is mainly composed of a tubular tube. This facilitates the manufacture of the endoscope component and reduces the manufacturing cost.

(8) An insertion part to be inserted into a lumen, an operation part provided on the base end side of the insertion part,
It has a conduit formed along the longitudinal direction, and the endoscope component according to any one of the above (1) to (7), which is used by being inserted into the conduit. Endoscope.

Thus, without increasing the diameter of the insertion portion, the endoscope is maintained multifunctional, has a simple structure, and gives a propulsive force to the insertion portion toward the distal end thereof to advance the insertion portion. It is possible to provide an endoscope that can assist and can easily and reliably perform an insertion operation into a lumen.

(9) The conduit has a proximal end opening which is open to the outside on the proximal end side, and the endoscope component is removed from the insertion portion by being pulled out from the proximal end opening. The endoscope according to the above (8), which is possible.

Thus, the endoscope component can be quickly removed as needed.

(10) The endoscope according to (8) or (9), wherein at least a part of the inner surface of the conduit is subjected to a friction increasing treatment.

Thus, the insertion operation of the insertion portion can be performed more easily and reliably.

(11) Further, a hitting body provided near the tip of the hollow portion so as to be movable along its longitudinal direction, a drive source for reciprocating the hitting body, and at least a part of the driving source. A transmission member that is provided so as to be located in the portion, and that transmits a driving force of the driving source to the hitting body,
The endoscope component has a collision portion near the distal end with which the hitting body collides, wherein the hitting body and the transmission member are provided detachably with respect to the insertion portion, and the drive source The above (8) to (10), wherein the hitting body reciprocated by the above repeatedly hits the hitting portion, whereby the insertion portion obtains a propulsive force in the direction of the tip thereof.
An endoscope according to any one of the above.

Thus, the insertion operation of the insertion portion can be performed more easily and reliably.

(12) The endoscope according to the above (11), wherein the collision portion is configured so that the hitting body cannot pass through.

Thus, the hitting force of the hitting body is transmitted to the insertion portion with higher efficiency, and as a result, the insertion operation of the insertion portion is
Further, it can be performed easily and reliably.

(13) The endoscope according to the above (11) or (12), wherein the collision section is a closing section for sealing the hollow section.

Thus, the hitting force of the hitting body is transmitted to the insertion portion with a particularly high efficiency, and as a result, the insertion operation of the insertion portion is reduced.
Further, it can be performed easily and reliably.

(14) The endoscope according to any one of the above (11) to (13), wherein at least a part of the outer surface of the hitting body and / or the transmitting member is subjected to a friction reducing treatment.

Thus, the insertion operation of the insertion portion can be performed more easily and reliably.

(15) The method according to any one of the above (11) to (14), wherein at least a part near the outer surface of the hitting body and / or the transmitting member is made of a fluororesin. Endoscope.

Thus, the insertion operation of the insertion portion can be performed more easily and reliably.

(16) The endoscope according to any one of (11) to (15), wherein the transmission member is detachably connected to the drive source. Thereby, the transmission member and the hit body can be easily removed from the insertion portion.

(17) The endoscope according to any one of the above (11) to (16), wherein an impact condition of the hitting body can be adjusted. Thereby, the thrust acting on the insertion portion can be adjusted.

(18) The endoscope according to any one of (11) to (17), wherein the stroke of the reciprocating motion of the hitting body is adjustable. Thereby, the thrust acting on the insertion portion can be adjusted.

(19) The endoscope according to any one of (11) to (18), wherein the cycle of the reciprocating movement of the hitting body is adjustable. Thereby, the thrust acting on the insertion portion can be adjusted.

[0043]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An endoscope component and an endoscope according to the present invention will be described below in detail based on preferred embodiments shown in the accompanying drawings.

<First Embodiment> FIG. 1 is a side view showing a first embodiment of an endoscope component (tube) of the present invention and an endoscope having the endoscope component. , FIG. 2
Is a cross-sectional view taken along line XX in FIG. 1, FIG. 3 is a semi-longitudinal cross-sectional view showing the insertion section 2 of the endoscope (electronic scope) 1 and the distal end of the tube 7 shown in FIG. FIG. 5 is a block diagram showing a circuit configuration example for controlling the rotary solenoid 4. Note that FIG.
Is a simplified diagram for the purpose of showing a configuration example of the conduit 16, the tube 7, the hitting body 5, the transmission member 6, and the like, and the illustration of a built-in component of the insertion portion 2 described later is omitted. (The same applies to FIGS. 6 and 7 described later). Also,
In the following description, the left side in FIG. 1 and FIG.
The right side is called “tip”, the upper side is called “upper”, and the lower side is called “lower”.

The endoscope 1 shown in these figures reciprocates the long insertion portion 2, the operating portion 3 provided on the base end side of the insertion portion 2, the hitting member 5, and the hitting member 5. A rotary solenoid 4 as a drive source, a transmission member 6 for transmitting the driving force of the rotary solenoid 4 to the hitting body 5, a tube 7 as a component for an endoscope having a hollow portion, and a rotary solenoid 4
, And a flexible connection tube 30 connected to the operation unit 3. Hereinafter, the configuration of each unit will be described.

The insertion portion 2 is a portion to be inserted into a lumen (tubular organ) of a living body, and has a configuration in which various built-in components described later are disposed inside a long tubular member. .

Most of the entire length of the insertion section 2 (excluding the vicinity of the distal end) is constituted by a flexible (elastic) flexible tube section 21. The exterior of the flexible tube portion 21 is formed of a flexible tube for an endoscope. The flexible tube for an endoscope is formed by braiding a spiral tube 23 formed by spirally winding a band-like material and a thin wire made of metal or nonmetal, and a mesh-like shape covering the outer periphery of the spiral tube 23. It comprises a tube 24 and an outer skin 25 made of an elastic material such as a synthetic resin and covering the outer periphery of the mesh tube 24. Note that, in the configuration shown in FIG.
It is provided in double.

The portion near the distal end of the insertion section 2 is
It is composed of The exterior of the bending portion 22 is formed of a bending tube. The curved tube includes a plurality of node rings (not shown) rotatably connected to each other, a mesh tube 24 covering the outer periphery of the node ring, and an outer skin 25 covering the outer periphery of the mesh tube 24. It is configured. As described later, the bending portion 22 can be remotely controlled in bending.

An image pickup device (CCD) (not shown) for picking up an image of a subject at an observation site is provided at the tip of the insertion section 2 (curved section 22).

As shown in FIG. 2, inside the insertion portion 2,
A light guide 11 using an optical fiber bundle, an image signal cable 12, a bending operation wire 13, a conduit tube 14, and an air supply / liquid supply tube 15 are respectively inserted and installed along the longitudinal direction. . The endoscope 1 is configured to be able to supply air and liquid to the lumen from the distal end of the insertion section 2 through the inside of the air and liquid supply tube 15.

The inside of the conduit tube 14 becomes a conduit 16 in which the tube 7 described later is installed. The conduit 16 is provided at a position eccentric downward in FIG. 3 from the center axis 26 of the insertion portion 2 in the illustrated configuration, but the position of the conduit 16 in the cross section of the insertion portion 2 is There is no particular limitation, and for example, it may be provided concentrically with the insertion section 2.

The conduit 16 is formed along the longitudinal direction of the insertion portion 2, and the distal end of the conduit 16 is open to the outside at the distal end of the insertion portion 2, and a distal end opening 18 is formed.

The base end of the insertion section 2 is connected to the operation section 3. The operation unit 3 is a part that is operated by the operator to operate the endoscope 1 as a whole. An operation knob 31 is provided on the side of the operation unit 3 near the base end. This operation knob 31
Is operated, the bending operation wire 13 disposed in the insertion section 2 is pulled, and the bending direction and the degree of bending of the bending section 22 can be freely controlled.

In the vicinity of the distal end of the operating section 3, a projecting section 32 projecting obliquely upward is formed. The conduit 16 is formed continuously from the inside of the insertion section 2 to the inside of the operation section 3.
It is formed continuously within the projection 32.

The projecting portion 32 is formed with a base end opening 17 projecting in a cylindrical shape, and the base end of the conduit 16 is opened obliquely upward to the outside at the base end opening 17. I have. Further, the inner diameter of the conduit 16 in the portion formed inside the protruding portion 32 is larger than the inner diameter of the conduit 16 in the portion formed inside the insertion portion 2.

The tube 7, which will be described in detail later, is installed in the conduit 16, and can be pulled out of the conduit 16 and pulled out of the insertion section 2 by being pulled out from the proximal opening 17 of the conduit 16. It has become.

One end of a flexible tube 30 is connected to the lower part of the operation unit 3, and the other end of the flexible tube 30 is connected to a light source insertion unit (not shown). . The light source insertion portion is provided with an image signal connector (not shown) and a light source connector (not shown), and the endoscope 1 is connected to the light source processor device (not shown) through both connectors. Z)
Connected to. Further, the light source processor device is connected to a monitor device (not shown) via a cable.

The light emitted from the light source in the light source processor device is transmitted to the inside of the light source insertion portion, the inside of the flexible tube 30 at the connection portion, and to the operation portion 3.
, Light guide 11 continuously arranged in insertion section 2
Through the insertion portion 2 (curved portion 22), and is illuminated from the distal end portion of the insertion portion 2 (bending portion 22) to the observation site.

The reflected light (subject image) from the observation site illuminated by the illumination light is picked up by an image sensor. An image signal corresponding to the subject image picked up by the image pickup device is output via a buffer (not shown).

This image signal is continuously provided in the insertion section 2, the operation section 3, and the connecting section flexible tube 30, and passes through the image signal cable 12 for connecting the image pickup device and the image signal connector. And transmitted to the light source insertion part.

Then, predetermined processing (for example, signal processing, image processing, and the like) is performed in the light source insertion unit and the light source processor device, and thereafter, input to the monitor device. In the monitor device, an image (electronic image) captured by the image sensor,
That is, an endoscope monitor image of a moving image is displayed.

It is needless to say that the present invention can be applied not only to an electronic endoscope such as the endoscope 1 but also to various endoscopes including a fiber endoscope.

In the pipe 16, along its longitudinal direction,
A long tube 7 is installed (inserted). The tube 7 is mainly constituted by a tubular tube. The overall length of the tube 7 is substantially the same as the overall length of the conduit 16.
Further, the tube 7 has flexibility and can be freely bent in accordance with the bending of the insertion section 2.

A hollow portion 74 extending in the longitudinal direction is formed inside the tube 7. As will be described in detail later, the hollow body 74 is provided with a hitting body 5 and a transmission member 6 for transmitting a driving force to the hitting body 5.

The tube 7 has a high frictional resistance portion 77 having a coefficient of static friction larger than that of the inner surface 78 thereof.
1 on at least a part of its outer surface 77. As described above, the endoscope component of the present invention is characterized in that a high friction resistance portion having a static friction coefficient larger than the static friction coefficient of the inner surface is provided on at least a part of the outer surface.

Thus, the friction between the inner surface of the conduit tube 14 and the outer surface 77 of the tube 7 is larger than the friction between the outer surface of the hitting body 5 and the transmitting member 6 and the inner surface 78 of the tube 7. Can be easily done. as a result,
The inside of the tube 7 (hollow portion 74) is
It is possible to effectively prevent and suppress the movement of the tube 7 relative to the conduit tube 14 when the. Therefore, the driving force transmitted to the hitting body 5 is reliably transmitted to the tube 7, and as a result, the insertion of the insertion portion 2 into the lumen can be performed easily and reliably.

The high friction resistance portion 771 is not particularly limited as long as it is present on at least a part of the outer surface 77, but is preferably present near the distal end of the tube 7. Thereby, the tube 7 is connected to the conduit tube 1
4 is more securely fixed to the insertion section 2
Can be more easily and reliably inserted into the lumen.

[0068] The static friction coefficient of the high friction portion 771 mu _h, when the static friction coefficient of the inner surface 78 and the mu _i, preferably satisfies the following formula (I). μ _h −μ _i ≧ 0.08 (I)

Further, instead of the above formula (I), the following formula (I
It is more preferable that the formula (I) is satisfied, and it is more preferable that the following formula (III) is satisfied. μ _h −μ _i ≧ 0.1 (II) μ _h −μ _i ≧ 0.2 (III)

The static friction coefficient μ of the high friction resistance portion 771
_h and the coefficient of static friction μ _i of the inner surface 78 satisfy the above expression, so that the tube 7 is more securely fixed to the conduit tube 14, and the striking body 5 installed in the hollow portion 74. And the transmission member 6 can move more smoothly. As a result, it becomes possible to more easily and reliably insert the insertion section 2 into the lumen.

The relationship between the static friction coefficient of the high friction resistance portion 771 and the static friction coefficient of the inner surface 78 as described above is, for example, that the constituent materials differ between the vicinity of the inner surface 78 and the vicinity of the high friction resistance portion 771. Or by performing a friction increasing process such as performing a surface roughening process on a portion to be the high friction resistance portion 771. Further, for example, lubrication of the inner surface 78 of the tube 7 with molybdenum disulfide (MoS ₂ ), boron nitride (BN), graphite, fluorocarbon ((CF) _n ), fluorine resin, fluorine oil, grease, etc. The relationship between the static friction coefficient of the high friction resistance portion 771 and the static friction coefficient of the inner surface 78 as described above may be established by applying an agent (a lubricant) or the like.

The constituent material of the tube 7 is not particularly limited. For example, polyvinyl chloride, polyethylene,
Polyolefin resins such as polypropylene and ethylene-vinyl acetate copolymer, polyamide resins, polyester resins such as polyethylene terephthalate (PET) and polybutylene terephthalate, polyurethane resins, polystyrene resins, polytetrafluoroethylene (PTF)
E), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), perfluoroalkoxyalkane (PFA), tetrafluoroethylene-ethylene copolymer (ETFE), polyvinylidene fluoride (PVD)
F), polyvinyl fluoride (PVF), polychlorotrifluoroethylene (PCTFE), chlorotrifluoroethylene-ethylene copolymer (ECTFE), ethylene-
Flexible resins such as fluorocarbon resins such as tetrafluoroethylene copolymers and polyimide resins, thermoplastic elastomers such as polyurethane elastomers and polyester elastomers, and ethylene-propylene-diene copolymer (EPDM) , Nitrile rubber (NBR), various elastomers such as silicone rubber, and the like, and two or more of these may be used in combination. Further, the tube 7 may be provided with a reinforcing material (core material) made of various metal materials such as stainless steel, aluminum or aluminum alloy, titanium or titanium alloy, various hard resins, or the like. The shape of such a reinforcing material can be, for example, a linear shape, a spiral shape, a mesh shape, or the like.

In particular, the vicinity of the inner surface 78 and the high friction resistance portion 77
When the vicinity 1 is made of a different material, the vicinity of the inner surface 78 is not particularly limited. For example, polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), perfluoroalkoxy Alkanes (PFA), tetrafluoroethylene-ethylene copolymer (ETFE), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF),
Polychlorotrifluoroethylene (PCTFE), chlorotrifluoroethylene-ethylene copolymer (ECTF)
E), ethylene-tetrafluoroethylene copolymer, etc.
Alternatively, it is preferably formed of a fluorine-based resin such as a polymer alloy (for example, a polymer blend or a copolymer) containing at least one selected from these.
Since the vicinity of the inner surface 78 is made of a fluorine-based resin, the hitting body 5 and the transmission member 6 installed in the hollow portion 74 can move more smoothly. As a result, when the hitting body 5 and the transmission member 6 move inside the tube 7 (hollow portion 74), the tube 7 is more effectively prevented and suppressed from moving relative to the conduit tube 14. It is possible to do. Therefore, it is possible to more easily and reliably insert the insertion portion 2 into the lumen.

The vicinity of the inner surface 78 and the high friction resistance portion 77
1 is made of a different material, the vicinity of the high frictional resistance portion 771 is not particularly limited. For example, ethylene-propylene-diene copolymer (EPDM), nitrile rubber (NBR), silicone rubber, polyurethane It is preferably formed of a thermoplastic elastomer such as a base elastomer, a polyester elastomer or the like, or a polymer alloy (for example, a polymer blend or a copolymer) containing at least one selected from these. When the vicinity of the high friction resistance portion 771 is made of such a material, the static friction resistance in the high friction resistance portion 771 is particularly large. As a result, when the hitting body 5 and the transmission member 6 move inside the tube 7 (hollow portion 74), the tube 7 is more effectively prevented and suppressed from moving relative to the conduit tube 14. It is possible to do. Therefore, it is possible to more easily and reliably insert the insertion portion 2 into the lumen.

The base end of the hollow portion 74 is open to the outside at a base end opening 75. That is, a proximal opening 75 is formed at the proximal end of the tube 7.

The portion near the base end of the tube 7 is
The diameter of the pipe 16 is increased in accordance with the diameter of the conduit 16 located inside the pipe 2. Thereby, when inserting the hit body 5 and the transmission member 6 into the hollow part 74 of the tube 7, this insertion operation can be easily performed.

The outer diameter of each part of the tube 7 is set so that the gap between the tube 7 and the pipe 16 is as small as possible when the tube 7 is properly installed in the pipe 16. Preferably, it is substantially the same as the inside diameter of the conduit 16. Thereby, when the hitting body 5 collides with the closing portion 72 (collision portion), the movement of the tube 7 in the distal direction with respect to the conduit 16 is restricted (suppressed) by friction. Therefore, the force (propulsive force) that the tube 7 receives from the hitting body 5 can be transmitted from the tube 7 to the insertion portion 2 with higher efficiency.

At the tip of the tube 7, a closing portion 72 for sealing the hollow portion 74 is formed. This closing portion 72
It is located near the distal end of the insertion section 2 (the conduit 16). The closing portion 72 constitutes a collision portion where the hitting body 5 collides, and the hitting body 5 described later repeatedly hits the base end face 721.

The closing portion 72 may be integrally formed of the same material, and may be formed by fixing a material made of various hard resins, various metal materials, various ceramics, etc. to the main body. It may be something. Further, it can be made of a material having an X-ray contrast property.
Even if an X-ray marker is not separately provided, the position of the distal end of the insertion section 2 can be confirmed under X-ray fluoroscopy.

A hitting body (hammer) 5 having a substantially cylindrical shape as a whole is provided near the tip of the hollow portion 74 so as to be movable in the longitudinal direction of the hollow portion 74. That is, the hitting body 5 is located on the base end side of the closing portion 72. The hit body 5 is formed by the rotary solenoid 4 into a hollow portion 74.
Is reciprocated along the longitudinal direction of the tip surface (tip portion)
The protruding force of the insertion portion 2 toward the distal end thereof (hereinafter, simply referred to as “propulsion force”) is given to the insertion portion 2 by repeatedly colliding with the base end surface 721 of the closing portion 72.

The constituent material of the hitting body 5 is not particularly limited, and both a metallic material and a nonmetallic material can be used. For example, a comparative material such as iron, stainless steel, titanium, tungsten, brass, or copper can be used. A metal material having a large specific gravity is preferably used. Thereby, a large propulsion force can be obtained even when the outer shape of the hitting body 5 is reduced.

The base end of the hitting body 5 is connected to the front end of the transmission member 6. Here, the hitting body 5 may be replaced with a similar hitting body 5 having different conditions, for example, a hitting body 5 having a different weight. Thereby, the driving force applied by the hitting body 5 to the insertion portion 2 can be adjusted, and the propulsion force of the insertion portion 2 can be adjusted. In this case, the hitting body 5 may be replaced with the transmitting member 6 by making the hitting body 5 and the transmission member 6 detachable, and the hitting body 5 and the transmitting member 6 may be replaced with the insertion portion 2. They may be exchanged as a set.

As shown in FIG. 3 and FIG.
Is a long (slim) member, and a flexible coil portion 61 formed by spirally winding a band-shaped material without gaps.
And a rod-shaped rod portion 62 connected to the base end of the coil portion 61. The coil portion 61 includes the transmission member 6
And is provided in the hollow portion 74 along the longitudinal direction. Then, a part of the rod part 62 comes out of the base end opening 75 of the hollow part 74 and is exposed to the outside.

Since the portion of the transmission member 6 located in the insertion portion 2 is constituted by the coil portion 61,
The transmission member 6 does not hinder the bending of the flexible tube portion 21 and the bending portion 22 of the insertion portion 2, and the driving force of the rotary solenoid 4 is reduced even when the flexible tube portion 21 and the bending portion 22 are in the bending state. The power can be transmitted to the hitting body 5 with high efficiency (with little loss).

The constituent material of the transmission member 6 is not particularly limited, and both a metal material and a non-metal material can be used. For example, a metal material such as stainless steel or a superelastic alloy is preferably used.

It is preferable that at least a part of the outer surface of the hitting body 5 and / or the transmitting member 6 is subjected to a friction reducing treatment for reducing a frictional resistance with the tube 7.
Thereby, the hitting body 5 and the transmission member 6 installed in the hollow portion 74 can move more smoothly. As a result, when the hitting body 5 and the transmission member 6 move inside the tube 7 (hollow portion 74), the tube 7
, It is possible to more effectively prevent and suppress the movement relative to. Therefore, it is possible to more easily and reliably insert the insertion portion 2 into the lumen.

The friction reducing treatment applied to the outer surface of the hitting body 5 and / or the transmitting member 6 includes, for example, the hitting body 5 and / or
Alternatively, at least a part of the outer surface of the transmission member 6 is coated with a material having a low static friction coefficient (a low friction resistance material). Examples of the low friction resistance material used for coating include polytetrafluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), perfluoroalkoxyalkane (PFA), and tetrafluoroethylene-ethylene copolymer. Coalescence (ETFE), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), polychlorotrifluoroethylene (PCTFE), chlorotrifluoroethylene-ethylene copolymer (ECTFE), ethylene-tetrafluoroethylene copolymer, etc. Or a fluorine-based resin such as a polymer alloy (for example, a polymer blend or a copolymer) containing at least one selected from these.

The rotary solenoid 4 reciprocates the hitting body 5 repeatedly along the longitudinal direction of the hollow portion 74. As shown in FIG. 1, the rotary solenoid 4
The operation unit 3 is disposed at a substantially central portion in the longitudinal direction of the operation unit 3 via the base 43. That is, the rotary solenoid 4
Is provided at a position on the distal end side of the operation knob 31.

The rotary solenoid 4 has a case (stator) 41 fixed to a pedestal 43 and a rotor 42 rotatably mounted on the case 41.

The rotary solenoid 4 is electrically connected to the control unit 8 by a lead wire 85. When energized by the controller 8, the rotor 42 rotates the rotor 42 by a predetermined angle from the start position, and when the energization is released, the rotor 42 is biased by a return spring installed in the case 41. Returns to the start position.

The lead wire 85 may be provided inside the operation section 3 and the connection section flexible tube 30, unlike the configuration shown in the figure. Thereby, the operability is further improved.

As shown in FIG. 5, the control unit 8 has a power supply circuit 81 and a drive circuit 82 therein, and controls and drives the rotary solenoid 4.

The power supply circuit 81 is connected to a power supply,
Power is supplied to the drive circuit 82. The power supply of the power supply circuit 81 is not particularly limited, and for example, a power supply common to the light source processor device, a power supply of another system therefrom, or a battery can be used.

The drive circuit 82 converts the supplied power so as to output a voltage that periodically changes in, for example, a pulse wave (rectangular wave), oscillates, and supplies the voltage to the rotary solenoid 4. Accordingly, the energized state and the non-energized state of the rotary solenoid 4 are periodically repeated, and the rotor 42 reciprocates periodically. In this case, the driving circuit 82
The oscillation frequency of is not particularly limited,
It is preferably about Hertz, and more preferably about 5 to 15 Hertz.

As shown in FIG. 1, one end of an arm 44 is fixed to the rotor 42 by, for example, screws. The other end of the arm 44 is provided with a long hole 45 along its longitudinal direction, and a pin slider 46 is provided. The pin slider 46 is connected to the arm 44
, And is freely movable along the long hole 45.

The pin slider 46 is provided with an internally threaded female thread.
On the base end side, a male screw portion formed by cutting a male screw corresponding to the female screw portion is formed. Then, the transmission member 6 and the arm 44 are connected (coupled) via the pin slider 46 by screwing the male screw portion of the rod portion 62 into the female screw portion of the pin slider 46. Thus, the rod portion 62 is connected to the arm 44 so as to be rotatable and movable along the elongated hole 45. The arm 44 and the rod portion 62 are preferably connected in a positional relationship such that the angle between the arm 44 and the rod portion 62 is close to a right angle in a range where the rotor 42 rotates.

The pin slider 46 is released from the long hole 4 of the arm 44 by releasing the fixing with, for example, a small screw.
5, the arm 44 and the rod portion 62 of the transmission member 6 are detachable. Therefore, the arm 44 and the rod 6 of the transmission member 6
By disconnecting the connection member 2 and the transmission member 6 from the base end opening 75 of the hollow portion 74, the transmission member 6 and the hitting body 5 can be easily removed from the insertion portion 2.

When the rotary solenoid 4 is driven and the rotor 42 reciprocates, the arm 44 attached to the rotor 42 causes the rod 62 of the transmission member 6 to move to the hollow portion 7.
4 is reciprocated along the base end. At this time, as described above, since the rod portion 62 is connected to the arm 44 via the pin slider 46, the rotational motion of the rotor 42 is smoothly converted to the reciprocating motion of the transmission member 6 and transmitted.

As described above, when the transmission member 6 reciprocates along the longitudinal direction of the hollow portion 74, the hitting body 5 attached to the tip of the transmission member 6 also reciprocates along with this. As described above, the driving force of the rotary solenoid 4 is transmitted to the hitting body 5 by the transmitting member 6 and the hitting body 5 is
4 periodically reciprocate along the longitudinal direction.

Here, in the present embodiment, the reciprocating stroke of the striking body 5 can be adjusted by rotating the rod portion 62 of the transmission member 6 around the axis with respect to the pin slider 46. That is, as described above, since the male screw portion formed on the base end side of the rod portion 62 is screwed to the female screw portion of the pin slider 46, the rod portion 62 is rotated around the axis. By the rod part 6
The connection position of the 2 (transmission member 6) to the arm 44 (rotary solenoid 4) moves. Thereby, the position of the hitting body 5 corresponding to the start position of the rotor 42 of the rotary solenoid 4 moves. Since the stroke of the reciprocating motion of the striking body 5 is the distance from this position to the collision with the closing portion 72 of the tube 7, the stroke of the reciprocating motion of the striking body 5 can be adjusted in this manner.

By adjusting the reciprocating stroke of the hitting body 5 in this manner, it is easy to determine at which position in the movable range of the rotor 42 the hitting body 5 collides with the closing portion 72 of the tube 7. Can be adjusted. That is, when the hitting body 5 is adjusted so as to collide within a certain range in the movable range of the rotor 42, a large hitting force is obtained, and the driving force of the rotary solenoid 4 is efficiently used for the propulsive force of the insertion portion 2. However, in the present embodiment, the adjustment can be easily performed.

The hitting body 5 reciprocated by the rotary solenoid 4 repeatedly hits the base end face 721 of the closing portion 72 of the tube 7. As a result, the hitting body 5 is
To the tip. The force in the distal direction is transmitted from the tube 7 to the insertion portion 2, and the insertion portion 2 obtains a propulsive force.

The propulsive force assists the insertion section 2 to move forward in the lumen in the distal direction.
Makes the insertion operation extremely easy. In particular, since the pushing force and the torsional force applied to the base end side of the insertion portion 2 are concentrated on the distal end portion of the insertion portion 2 which is difficult to transmit, the propulsion force is obtained.
Propulsion works effectively.

Even when the insertion portion 2 is curved along the bending of the lumen, the driving force of the rotary solenoid 4 is transmitted to the hitting body 5 with high efficiency as described above, and a large propulsion force is obtained. .

When the hitting body 5 repeatedly collides with the tip of the tube 7, the insertion portion 2 slightly vibrates.
This prevents the insertion section 2 and the inner wall of the tubular organ from coming into close contact with each other, reduces the friction between the insertion section 2 and the lumen, reduces the resistance, and allows for easier insertion.

Further, since the high friction resistance portion 771 is provided on at least a part of the outer surface 77 of the tube 7 as described above, when the hitting body 5 collides with the tip of the tube 7, the tube 7 is Movement relative to the insertion portion 2 is effectively prevented and suppressed. Therefore, the tube 7
Is transmitted to the insertion section 2 reliably, and as a result, the insertion of the insertion section 2 into the lumen can be performed easily and reliably.

[0107] Such a mechanism for applying a propulsive force to the insertion section 2 is hereinafter referred to as a "propulsion mechanism".

In the endoscope 1, the strength (the speed at which the insertion section 2 moves forward) of the propulsive force acting on the insertion section 2 can be adjusted by adjusting (setting) the collision condition of the hitting body 5. Here, the collision conditions of the hitting body 5 include the weight of the hitting body 5 and the stroke of the reciprocating motion of the hitting body 5 as described above,
The term refers to the reciprocating cycle of the striking body 5, the striking force of the striking body 5 (the driving force of the driving source), and the like as described below. Note that the collision conditions of the hitting body 5 are not limited to those described above, and in the present invention, at least one of the collision conditions is adjusted (set).
Preferably it is possible.

In the present embodiment, the cycle of the reciprocation of the striking body 5 can be adjusted by changing the oscillation frequency from the drive circuit 82 provided in the control unit 8. That is, by adjusting the oscillation frequency, the cycle of the reciprocating motion of the hitting body 5 is changed, and the hitting body 5 per unit time is changed.
The number of times that collides with the collision portion (the closed portion 72 of the tube 7) increases or decreases. Therefore, by adjusting the oscillation frequency of the drive circuit 82, the speed at which the insertion section 2 moves forward can be adjusted. However, if the oscillation frequency is too high, the movement of the rotor 42 may not be able to follow the drive pulse, so the oscillation frequency is preferably in the above-described range.

In the present embodiment, the hitting force of the hitting body 5 (the driving force of the driving source) can be adjusted by adjusting the magnitude of the output voltage from the driving circuit 82. Thereby, the strength of the rotational force of the rotor 42 can be adjusted, and the strength of the hitting force of the hitting body 5 hitting the collision portion (the closing portion 72) can be adjusted.

The magnitude of the output voltage can be adjusted, for example, by changing the duty ratio of the output pulse (the ratio of the energizing time in one cycle of the pulse expressed as a percentage). In this case, the preferred value of the duty ratio varies depending on the output voltage of the power supply circuit 81, the type and use of the endoscope, and the like. More preferably, it is in the order of magnitude.

The adjustment of the oscillation frequency of the drive circuit 82 (the speed at which the insertion section 2 moves forward) and the adjustment of the hitting force of the hitting body 5
Each of the frequency adjustment knobs 83 provided in the control unit 8
And, it can be adjusted by operating the hitting force adjusting knob 84. Further, the frequency adjustment knob 83 and the striking force adjustment knob 84 may be provided on the operation unit 3. Thereby, the operability is further improved.

It is preferable that the rotary solenoid 4 is detachably provided to the operation unit 3. Accordingly, when the propulsion mechanism is not used, for example, when the propulsion mechanism is inserted into a relatively shallow part, the weight can be reduced by removing the rotary solenoid 4 and the operability can be improved.
Also, by removing the rotary solenoid 4 during sterilization and washing after use, sterilization and washing can be performed easily and reliably.

Next, an example of the usage (operation) of the endoscope 1 will be described. [1] Initial Setting of Collision Conditions Before the insertion operation is started, by adjusting the above-mentioned collision conditions according to the case, the physique of the patient, the insertion target site, etc., the strength of the propulsive force acting on the insertion section 2 can be reduced. Adjust.

That is, the hitting body 5 having a desired weight is selected and mounted, and the connection position of the rod portion 62 to the arm 44 is adjusted. By operating the frequency adjusting knob 83 and the hitting force adjusting knob 84, the speed at which the insertion portion 2 moves forward and the hitting force of the hitting body 5 are adjusted.

Note that these initial settings may be made as needed, and need not be adjusted each time they are used.

[2] Insertion operation The insertion operation is performed by applying a pushing force or torsion to the base end of the insertion section 2 in the same manner as in a conventional endoscope having no propulsion mechanism, and inserting the insertion section 2 into a tube. Advance into the cavity. In this case, according to the present invention, as described above, since the propulsion mechanism assists the advancement of the insertion portion 2 in the lumen, even in a case where the insertion portion 2 is particularly inserted deep into the body cavity, it is extremely possible. It can be easily inserted.

During the insertion operation, the speed at which the insertion section 2 moves forward (the propulsive force of the insertion section 2) can be adjusted as desired by operating the frequency adjustment knob 83 and the striking force adjustment knob 84. be able to. This allows
While judging the degree of lumen bending and the patient's situation,
The desired speed (propulsion) is obtained.

Initially, the tube 7 (and the rotary solenoid 4) was inserted into the body without being attached,
If insertion becomes difficult in the middle,
By mounting the (and the rotary solenoid 4), a propulsion mechanism may be used.

[3] After Insertion is Completed When the insertion to the target site is completed, the screw 47 is loosened, the connection between the arm 44 and the transmission member 6 is released, and the transmission member 6 and the hitting body 5 are opened together with the base end opening of the tube 7. Pull out from 75,
Pull out (remove) from the insertion section 2.

Next, the tube 7 is pulled out from the proximal end opening 17 of the conduit 16 and pulled out (removed) from the insertion portion 2. In this state, the conduit 16 penetrates from the proximal opening 17 to the distal opening 18 at the distal end of the insertion section 2. Thereby, the pipeline 16 can be used for other purposes. Other uses of the conduit 16 are not particularly limited, and include, for example, the following.

-Forceps such as biopsy forceps and grasping forceps, various sensors such as body temperature sensors, electrodes for measuring electrocardiograms, incision tools such as knives and laser scalpels, contrast tubes, washing tubes, drainage tubes, etc. A treatment tool insertion channel for inserting various treatment tools (inspection tools) such as various tubes (catheters), crushing probes (stone breaking tools), heat probes, injection needles, ligating tools, wires and the like.

A liquid supply (air supply) channel for ejecting a fluid such as water from the distal end of the insertion section 2 to remove blood or mucous membranes at the observation site or for injecting a medical solution for treatment.

A suction channel for sampling a bodily fluid, discharging a fed fluid, and the like.

As described above, in the present invention, since the conduit 16 can be used for other purposes, the multifunctionality of the endoscope can be maintained without increasing the diameter of the insertion section 2. Thereby, the diameter of the insertion section 2 can be reduced as in an endoscope having no conventional propulsion mechanism. Therefore, the insertable site is wide, and the burden on the patient does not increase.

<Second Embodiment> FIG. 6 shows a distal end portion of a second embodiment of the endoscope component (tube) of the present invention and an endoscope having the endoscope component in the second embodiment. FIG. 5 is a semi-longitudinal sectional view showing a distal end portion of an insertion portion.

Hereinafter, a second embodiment of the endoscope of the present invention will be described with reference to this figure, but the description will focus on differences from the above-described embodiment, and the description of the same items will be omitted. .

The present embodiment is the same as the first embodiment except that the structure of the collision portion formed at the distal end of the tube 7 is different.

The collision portion in this embodiment is different from the closing portion 72 of the first embodiment in that it has a reduced diameter portion 76 having a reduced diameter hole 761 in which the inner diameter of the hollow portion 74 is reduced.

That is, the distal end side of the hollow portion 74 communicates with the outside through the reduced diameter hole 761. The inner diameter of the reduced diameter hole 761 is set smaller than the outer diameter of the hitting body 5, and the hitting body 5 cannot move (pass) in the distal direction beyond the reduced diameter portion 76.

The distal end face 51 of the hitting body 5 reciprocated by the rotary solenoid 4 repeatedly collides with the base end face 762 of the reduced diameter portion 76 to give a propulsive force to the insertion portion 2. Thus, in the present embodiment, an effect of facilitating the insertion operation can be obtained as in the first embodiment.

Further, after the use of the propulsion mechanism, the tube 7,
By removing the hitting body 5 and the transmission member 6 from the insertion portion 2, the conduit 16 is used for other purposes as a treatment tool insertion channel, a liquid supply (air supply) channel, a suction channel, and the like as described above. What can be done is the same as in the first embodiment.

Further, in the present embodiment, since the reduced diameter hole 761 is formed at the distal end portion of the tube 7, only the hitting body 5 and the transmission member 6 can be used with the tube 7 mounted after using the propulsion mechanism. The hollow portion 74 can be used as a treatment instrument insertion channel as described above by pulling out the tube 7 from the proximal end opening 75 and removing the tube. Accordingly, when using a treatment tool having a relatively small distal end portion that can pass through the reduced diameter hole 761, the labor for removing the tube 7 can be omitted, and the procedure can be performed in a shorter time with a simpler operation. Can be.

Further, the present invention is not limited to the configuration of the reduced diameter portion 76 of the present embodiment. For example, the configuration may be such that the distal end of the tube 7 is formed in a lattice shape (frame shape) having a plurality of holes.
The same effects as in the present embodiment can be obtained.

<Third Embodiment> FIG. 7 is a semi-longitudinal sectional view showing an insertion portion and a distal end portion of a tube in a third embodiment of the endoscope of the present invention.

Hereinafter, a third embodiment of the endoscope of the present invention will be described with reference to this drawing, but the description will focus on the differences from the above-described embodiment, and the description of the same items will be omitted. .

In the present embodiment, the friction increasing process is performed near the tip of the inner surface of the pipe 18 so that the coefficient of static friction is increased so as to be larger than other portions of the inner surface of the pipe 18. A processing unit 181 is provided.

As the friction increasing process, for example, the constituent material of the portion serving as the friction increasing portion 181 and the constituent material of the portion other than the friction increasing portion 181 on the inner surface of the conduit 18 are made different, or the friction is increased. For example, a method of performing a surface roughening process on a portion to be the increase processing unit 181 may be used.

By performing the friction increasing process near the tip of the inner surface of the pipe 18, the coefficient of static friction near the tip of the inner surface of the pipe 18 is reduced at other parts of the inner surface of the pipe 18. Is larger than the static friction coefficient of As a result, when the hitting body 5 and the transmission member 6 move inside the tube 7 (hollow portion 74), the tube 7 is more effectively prevented and suppressed from moving relative to the conduit tube 14. It is possible to do. Therefore, it is possible to more easily and reliably insert the insertion portion 2 into the lumen.

The endoscope component and endoscope of the present invention have been described above. However, the present invention is not limited to these, and each part constituting the endoscope exhibits the same function. It can be replaced with any configuration obtained.

For example, the endoscope component of the present invention is not limited to the one mainly composed of a tubular tube as shown in the figure.
For example, those constituted by a braided body formed by braiding metal or non-metallic thin wires, those constituted mainly by spirally winding a band-shaped material, and the like. Is also good. The peripheral wall may have one or more holes, slits, or the like.

In the above-described embodiment, the distal end of the conduit is opened to the outside at the distal end of the insertion portion, and the distal end opening is formed. However, the distal end opening may be formed without being formed. Good. That is, the conduit may be closed near the distal end of the insertion portion.

In the endoscope of the third embodiment, the pipe 1
Although it has been described that the friction increasing process is performed near the tip of the inner surface of the pipe 8, the friction increasing process may be performed on at least a part of the inner surface of the pipeline 18. It may be applied to a portion other than near the front end of the surface.

The driving source for reciprocating the striking body 5 is not limited to the configuration of the rotary solenoid 4, but includes, for example, a direct-acting solenoid for linearly moving a plunger, a motor, a hydraulic cylinder, a pneumatic cylinder, a piezoelectric actuator, and the like. Any type can be used as long as the hitting body 5 can be reciprocated.

Further, any mechanism capable of transmitting power, such as a rotating mechanism, a link mechanism, a cam mechanism, a gear mechanism, a pulley and a belt, may exist between the drive source and the transmission member. .

The transmitting member 6 is not limited to the configuration shown in the figure, but can transmit the driving force of the rotary solenoid 4 to the striking body 5 to reciprocate the striking body 5. Any shape may be used as long as it does not hinder the curvature of the second.

The hitting part of the hitting body 5 is
Any configuration may be used as long as the hitting body 5 can collide with or cannot pass through, in relation to the shape and posture of the tip portion of.

Further, the endoscope component and endoscope of the present invention may be applied to endoscopes other than medical endoscopes (for example, industrial endoscopes).

[0149]

As described above, according to the present invention, the force applied by driving the driving source can be efficiently transmitted to the insertion portion. And the force transmitted to the insertion part is
It acts as a propulsive force toward the tip of the insertion section. The advance of the insertion portion is assisted by this propulsion, and insertion into the lumen can be performed easily and reliably.

Further, since the conduit which is the insertion space for the hitting body and the transmission member can be used for other purposes, the multifunctionality of the endoscope can be maintained without increasing the diameter of the insertion portion. be able to. Thus, the diameter of the insertion portion can be reduced as in a conventional endoscope having no propulsion mechanism. Therefore, it can be inserted into a thin lumen, and the burden on the patient is reduced.

In addition, the above-described effects can be achieved with a simple structure having little design change compared to the conventional endoscope, and can be manufactured relatively inexpensively, with high reliability and easy maintenance. It is.

Further, the outer shape of the insertion section is almost the same as that of a conventional endoscope, and the propulsion mechanism is not exposed outside the insertion section, so that the safety is extremely high.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of an endoscope component (tube) of the present invention and a first embodiment of an endoscope having the endoscope component.

FIG. 2 is a cross-sectional view taken along line XX in FIG.

FIG. 3 is a semi-longitudinal sectional view showing an insertion portion and a distal end portion of a tube in the first embodiment of the endoscope of the present invention.

FIG. 4 is a side view of a hitting body and a transmission member.

FIG. 5 is a block diagram showing an example of a circuit configuration for controlling a driving source.

FIG. 6 is a semi-longitudinal section showing the distal end of the endoscope component (tube) of the second embodiment of the present invention and the distal end of the insertion portion in the second embodiment of the endoscope having the endoscope component. FIG.

FIG. 7 is a semi-longitudinal sectional view showing an insertion portion and a distal end portion of a tube in a third embodiment of the endoscope of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Endoscope 11 Light guide 12 Image signal cable 13 Bending operation wire 14 Transmission member insertion tube 15 Air supply / liquid supply tube 16 Pipe line 161 Friction increase processing unit 17 Base end opening 18 Tip opening 2 Inserting part 21 Possible Flexible tube part 22 Curved part 23 Spiral tube 24 Reticulated tube 25 Outer skin 26 Center axis 3 Operation part 31 Operation knob 32 Projection part 4 Rotary solenoid 41 Case 42 Rotor 43 Base 44 Arm 45 Slot 46 Pin slider 47 Screw 5 Driving body 51 Tip Surface 52 Tapered section 6 Transmission member 61 Coil section 62 Rod section 7 Tube 71 Large diameter section 72 Closed section 721 Base end face 74 Hollow section 75 Base end opening 76 Reduced diameter section 761 Reduced diameter hole 762 Base end face 77 External surface 771 High frictional resistance Unit 78 inner surface 8 control unit 81 power supply circuit 82 drive circuit 83 frequency Adjustment knob 84 batting power adjustment knob 85 lead wires 30 connecting the flexible tube

Claims (19)

[Claims] 1. An endoscope component having an insertion portion in which a conduit is formed and used by being inserted into the conduit and having a hollow portion extending in the longitudinal direction therein. An endoscope component comprising: a high friction resistance portion having a static friction coefficient larger than a static friction coefficient of an inner surface on at least a part of an outer surface. 2. The endoscope component according to claim 1, wherein the high friction resistance portion is provided at least near a distal end portion of the endoscope component. 3. The endoscope component according to claim 1, wherein a difference between a static friction coefficient of the high friction resistance portion and a static friction coefficient of the inner surface is 0.08 or more. 4. The endoscope component according to claim 1, wherein the vicinity of the inner surface is made of a fluororesin. 5. The endoscope component according to claim 1, wherein at least a part of the outer surface has been subjected to a surface roughening treatment. 6. The endoscope component according to claim 1, wherein the endoscope component has the hollow portion sealed near a distal end portion thereof. 7. The endoscope component according to claim 1, which is mainly constituted by a tubular tube. 8. An insertion section to be inserted into a lumen, an operation section provided on a proximal end side of the insertion section, a pipe formed in the insertion section along a longitudinal direction thereof, and the pipe An endoscope comprising: the endoscope component according to any one of claims 1 to 7, which is used by being inserted into the endoscope. 9. The pipe line has a proximal opening which is open to the outside on the proximal end side, and the endoscope component is detachable from the insertion portion by being pulled out from the proximal opening. The endoscope according to claim 8, wherein 10. The endoscope according to claim 8, wherein at least a part of the inner surface of the conduit is subjected to a friction increasing treatment. 11. A hitting body movably provided in the vicinity of the tip of the hollow portion along the longitudinal direction thereof, a driving source for reciprocating the hitting body, at least a part of which is inside the hollow portion. And a transmission member for transmitting the driving force of the drive source to the hitting body, wherein the endoscope component has a collision portion near the distal end thereof where the hitting body collides. The hitting body and the transmitting member are provided detachably with respect to the insertion portion, and the hitting body reciprocated by the driving source repeatedly collides with the collision portion, so that the insertion portion The endoscope according to any one of claims 8 to 10, wherein the endoscope is configured to obtain a propulsive force in a distal direction thereof. 12. The endoscope according to claim 11, wherein the collision portion is configured so that the hitting body cannot pass through. 13. The endoscope according to claim 11, wherein the collision section is a closing section that seals the hollow section. 14. The endoscope according to claim 11, wherein at least a part of the outer surface of the hitting body and / or the transmitting member is subjected to a friction reducing treatment. 15. The endoscope according to claim 11, wherein at least a part near the outer surface of the hitting body and / or the transmitting member is made of a fluorine-based resin. 16. The driving member, wherein:
The endoscope according to any one of claims 11 to 15, wherein the endoscope is detachably connected. 17. The endoscope according to claim 11, wherein a collision condition of the hitting body can be adjusted. 18. The endoscope according to claim 11, wherein a stroke of a reciprocating motion of the hitting body is adjustable. 19. The endoscope according to claim 11, wherein a cycle of a reciprocating motion of the hitting body is adjustable.