JPS64888Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention (industrial application field) This invention relates to an endoscope that removes dirt brought into the interior by the reciprocating movement of the operation wire for raising and operating the treatment instrument. .

(Prior Art) As is well known, an endoscope is used to observe the inside of a human body cavity. For example, FIG. 4 shows a distal end portion 4' of a conventional endoscope. This distal end component 4' is connected to the distal end 3a' of the insertion section 3'. A water pipe 10' is disposed within the insertion portion 3'. The tip of this water pipe 10' is connected to the base end of the tip component 4' and communicates with the injection nozzle 5'. If the observation window 6' provided in the distal end component 4' becomes dirty with body fluids inside the body cavity,
Cleaning is performed by spraying cleaning and disinfecting water supplied from a water pipe 10' from a spray nozzle 5'.
Further, a spiral pipe 14' is disposed within this water pipe 10'. The tip of this spiral tube 14' is connected to a pipe 15' fixed to the base end of the tip component 4'. Inside the spiral tube 14' is an operating wire 1.
6' is inserted. This operating wire 16' is
An insertion hole 2 bored at the base of the tip component 4'
0', and its tip is connected to the guide element 23'. This guide 23' is rotatably supported in a storage chamber 22' formed in the tip component 4', and is rotated by the operation wire 16' to erect the tip of the forceps 25'. It is now possible to do so. An annular packing 21' is provided midway through the insertion hole 20'. There is no gap between the annular packing 21' and the operating wire 16', and the operating wire 16' is sealed by the annular packing 21'. When the operating wire 16' is moved backward, most of the dirt adhering to the operating wire 16' is scraped off by an annular gasket 21'. Further, the spiral pipe 14' is made of a spirally wound linear body and has a water passing function, and can flow the cleaning disinfectant water for cleaning the observation window 6' flowing inside the water pipe 10'. Dirt remaining on the operating wire 16' is washed with cleaning and disinfecting water.

(Problems to be Solved by the Invention) However, the conventional means for removing dirt adhering to the operating wire 16' has the following drawbacks. In other words, the dirt attached to the operating wire 16' cannot be completely removed by the annular gasket 21'.
A part of the dirt is drawn into the pipe 15' for fixing the spiral tube 14' by the reciprocating movement of the operating wire 16',
Dirt also enters the pipe 15' due to capillary action. For this reason, the inside of the pipe 15' was particularly prone to dirt and was unsanitary.

As described above, when cleaning the observation window 6', a portion of the cleaning disinfectant water flows through the spiral tube 14' and the pipe 15', and the operating wire 1
6' is small, so the flow rate is small.
Further, since the pipe 15' is sealed by the annular packing 21', the cleaning and disinfecting water remains inside the pipe 15'. Therefore, the dirt inside the pipe 15' could not be completely washed away with a portion of the cleaning and disinfecting water. As a result, it became unsanitary and some of the dirt adhered to the operating wire 16' and solidified, making it impossible for the operating wire 16' to reciprocate in some cases.

Structure of the device (means for solving the problem) This device was created to solve the above problem, and its gist is (a) the delivery from the hand operation section to the distal end component via the insertion section. a water pipe; (b) an injection nozzle for cleaning the observation window that is provided in the tip component and communicates with the water pipe; and (c) a spray nozzle that is provided in the water pipe, one end of which is connected to the hand control unit and the other end of which is connected to the tip. a spiral tube connected to a pipe fixed to the component, and (d)
an operating wire provided within the spiral tube, one end of which is connected to the operating knob of the hand operating unit, and the other end of which is inserted into an insertion hole provided in the distal end component;
(e) an annular gasket provided in the insertion hole; (f) stored in a storage chamber formed in the tip component;
An endoscope equipped with a guide that rotates when driven by the operation wire to erect the treatment instrument, wherein the pipe for fixing the spiral tube is provided with a water passage hole. It's in the mirror.

(Example) Hereinafter, an example of this invention will be described based on the drawings of FIGS. 1 to 3.

Reference numeral 1 in FIG. 1 is an endoscope. This endoscope 1
, a hand control section 2, an insertion section 3 consisting of a flexible tube, etc.
and a distal end forming section 4 connected to the distal end 3a of the insertion section 3. Tip 3a of insertion section 3
The bending operation can be performed remotely using each angle operation knob (not shown) of the hand operation unit 2.

The tip component 4 is provided with an injection nozzle 5, an observation window 6 facing the injection nozzle 5, and an illumination window (not shown), respectively. Observation window 6 above
is transmitted to the eyepiece section 7 of the hand operation section 2 via an objective lens system installed in the distal end component 4 and an image transmission optical system (not shown) consisting of an optical fiber bundle installed inside the insertion section 3. It is optically connected to an internal eyepiece system. The illumination window is connected to a plug 9 at the tip of the cable 8 via an illumination transmission optical system (not shown) consisting of the insertion section 3, the hand control section 2, and an optical fiber bundle installed in the cable 8.
optically connected to. This plug 9 is connected to a light source device (not shown).

A water pipe 10 is arranged from the hand operation section 2 through the insertion section 3 to the distal end component 4. One end of this water pipe 10 communicates with a water supply channel 11 . This water supply channel 11 passes from the hand control section 2 through the cable 8 and opens at a plug 9. A valve 12 is provided in the water supply channel 11 of the hand operation unit 2. Further, the other end of the water pipe 10 is connected to a pipe 13 fixed to the base end of the tip component 4, and communicates with the injection nozzle 5.

A spiral pipe 14 is disposed within the water pipe 10. One end of this spiral tube 14 is connected to the hand control unit 2
The other end is connected to a pipe 15 fixed to the base end of the distal end component 4. The pipe 15 for fixing the spiral tube 14 includes
A plurality of water holes 15a are provided. An operating wire 16 is inserted into the spiral tube 14. One end of this operating wire 16 is connected to a rack 17.
is connected to. This rack 17 meshes with a pinion 19 fixed to an operating knob 18 of the hand operating section 2. The other end of the operating wire 16 is connected to an insertion hole 20 formed in the base of the tip component 4.
It is inserted into.

The diameter of the insertion hole 20 is formed to be slightly larger than the diameter of the operating wire 16. An annular packing 21 is provided in the middle of the insertion hole 20. This annular packing 21 protrudes from the inner peripheral surface of the insertion hole 20, and a minute gap H is formed between the annular packing 21 and the operating wire 16.

A storage chamber 22 is formed in the distal end component 4 . A guide 23 is housed within this storage chamber 22. The tip of the operating wire 16 is connected to one side of the guide 23 . Further, the guide element 23 can be rotated about a shaft 24 by the reciprocating motion of the operating wire 16, thereby allowing the forceps 25 (treatment instrument) to be raised or lowered. Note that the forceps 25 are inserted through the forceps opening 26 of the hand operation section 2, and are passed from the hand operation section 2 to the insertion section 3.
A channel 27 leading to the proximal end of the distal end component 4 through
It is inserted through the inside and protrudes toward the storage chamber 22 side.

In the above configuration, when the endoscope 1 is inserted into a body cavity and used, the forceps 25 are inserted into the channel 27 from the forceps opening 26, and the distal end thereof is passed through to the storage chamber 22 of the distal end component 4. At this time, the guide 23 is laid down in the storage chamber 22, and the tip of the forceps 25 is guided by the upper surface of the guide 23 to protrude from the tip component 4 to the outside. In this case, forceps 25
The tip protrudes at a small inclination angle with respect to the longitudinal direction of the insertion section 3.

When the forceps 25 are to be erected at an even larger angle, when the operating wire 16 is moved back by operating the operating knob 18, the guide 23 is rotated upward about the shaft 24. This allows the tip of the forceps 25 to stand up.

During use, dirt such as bodily fluids adheres to the operating wire 16 within the body cavity, but most of this dirt is
It is removed with an annular packing 21. The gap H between the annular gasket 21 and the operating wire 16 is set within a range capable of removing dirt. In addition, some of the dirt attached to the operating wire 16 is removed from the pipe 1 for fixing the spiral tube 14 by the reciprocating movement of the operating wire 16.
Dirt is drawn into the pipe 15 and also enters the pipe 15 due to capillary action. For this reason,
Dirt accumulates inside the pipe 15. The scraped dirt accumulates in the insertion hole 20 in front of the annular packing 21. Further, dirt in the body cavity may adhere to the observation window 6 of the distal end component 4. In this case, cleaning and disinfecting water is supplied to the water pipe 10 by operating the valve 12 of the hand-held operation unit 2, and this cleaning and disinfecting water is sprayed from the spray nozzle 5 onto the observation window 6 for cleaning. At this time, the pipe 15 for fixing the spiral tube 14
Since a plurality of water holes 15a are bored in the pipe 15, a portion of the cleaning and disinfecting water passes through the water holes 15a of the pipe 15 and enters the insertion hole from the gap H between the annular packing 21 and the operating wire 16. Flows to the 20 side. As a result, the dirt accumulated in the pipe 15 and the insertion hole 20 is completely cleaned and disinfected. As a result, it is not only very sanitary, but also prevents dirt from hardening inside the operating wire 16 and the insertion hole 20, allowing the operating wire 16 to reciprocate smoothly. Therefore, the guide 2 is always stable.
3 rotation can be obtained, and the tip of the forceps 25 can be smoothly raised.

The gap H is determined so that a sufficient amount of cleaning/disinfecting water can be supplied to the observation window 6 and so that the ratio between the amount of this supply and the amount of supply to the insertion hole 20 is a desired ratio (for example, 8:2).

This invention is not limited to the above-mentioned embodiments, and various embodiments are possible. For example, cleaning water and air may be selectively supplied to the water pipe. Also,
The purpose of this invention can be achieved even if the gap H is not formed between the annular packing 21 and the wire 16 and a complete seal is created.

Effects of the invention As explained above, in this invention, by drilling a water hole in the pipe for fixing the spiral tube fixed to the tip component, the washing water supplied from the water pipe for washing the observation window can be used. A portion of the water can be flowed into the pipe, allowing the dirt accumulated in the pipe to be completely cleaned. As a result, it is hygienic and the reciprocating movement of the operating wire is always performed smoothly.

[Brief explanation of the drawing]

The drawings from Fig. 1 to Fig. 3 show one embodiment of this invention, Fig. 1 is a general schematic side view of the endoscope, and Fig. 2 is an enlarged sectional view of the distal end component of the endoscope. FIG. 3 is a further enlarged sectional view of the main part, and FIG. 4 is an enlarged sectional view of the distal end component of a conventional endoscope. DESCRIPTION OF SYMBOLS 1... Endoscope, 2... Hand operation part, 3... Insertion part, 4... Tip component part, 5... Injection nozzle, 6...
...Observation window, 10...Water pipe, 14...Spiral pipe, 1
5... Pipe for fixing the spiral tube, 15a... Water hole, 16... Operating wire, 18... Operating knob, 2
0...Insertion hole, 21...Annular packing, 22...
Storage room, 23... guide, 25... forceps (treatment tool), H... gap.

Claims (1)

[Scope of Claim for Utility Model Registration] (a) A water pipe leading from the hand control section through the insertion section to the tip component, and (b) A water pipe for cleaning the observation window provided in the tip component and communicating with the water pipe. an injection nozzle; (c) a spiral tube provided within the water pipe and connected to a pipe having one end fixed to the hand control unit and the other end fixed to the tip component; (d) provided within the spiral pipe; (E) An operation wire whose one end is connected to the operation knob of the hand operation unit and whose other end is inserted through an insertion hole provided in the tip component; (E) an annular gasket provided in the insertion hole; ) An endoscope that is housed in a storage chamber formed in the distal end component and is equipped with a guide that rotates when driven by the operation wire to erect the treatment instrument; An endoscope characterized by having a water hole.