JP4131009B2 - Endoscope with auxiliary water inlet - Google Patents

Description

[0001]
【Technical field】
The present invention relates to an endoscope provided with a sub-water supply port.
[0002]
[Prior art and its problems]
2. Description of the Related Art Conventionally, there is known an endoscope provided with a sub-water supply port for cleaning a lesioned part or for spraying a chemical solution separately from an objective lens cleaning nozzle that cleans the objective lens surface at the distal end of the insertion part. The objective lens cleaning nozzle includes an air supply nozzle that supplies only air, a water supply nozzle that supplies only water, or an air / water supply nozzle that also serves as an air / water supply. The objective lens cleaning nozzle and the sub-water supply port are not functionally related, and have conventionally been provided irrelevant.
[0003]
OBJECT OF THE INVENTION
An object of the present invention is to use air supply or water supply from an objective lens cleaning nozzle for cleaning a sub-water supply port, or to change (control) the direction of liquid from the sub-water supply port.
[0004]
SUMMARY OF THE INVENTION
The present invention provides an endoscope having an objective lens, an objective lens cleaning nozzle for supplying and supplying air to the surface of the objective lens, and a sub-water supply port independent of the objective lens cleaning nozzle at the distal end of the insertion portion of the endoscope. In the above, the auxiliary water supply port is arranged on the extension of the air / water supply direction from the objective lens cleaning nozzle, and the objective lens cleaning nozzle, the auxiliary water supply port and the objective lens are arranged in a substantially straight line in this order. It is said.
As described above, the objective lens cleaning nozzle may be an air supply nozzle for supplying air, a water supply nozzle for supplying water, or an air supply / water supply nozzle for both air supply and water supply.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 4 shows an example of the overall configuration of the endoscope 10, which includes an insertion portion 11 to be inserted into a body cavity and an operation portion 12 connected to the base side thereof. The insertion portion 11 has a distal end portion 13, a bending portion 14, and a flexible tube portion 15 in order from the distal end side, and the flexible tube portion 15 is connected to the operation portion 12 via a connecting portion 16. A universal tube 17 extends from the operation unit 12, and a connector unit 18 provided at the end of the universal tube 17 is detachable from a processor (not shown) separate from the endoscope body.
[0006]
As shown in FIG. 1, an objective lens 21, a pair of light distribution lenses 22, a treatment instrument insertion channel outlet 23, an air / water supply nozzle (objective lens cleaning nozzle) 24, and an auxiliary water supply port 25 are provided on the end surface of the distal end portion 13. Has been placed. The air / water supply nozzle 24, the objective lens 21, and the auxiliary water supply port 25 are arranged in a substantially straight line in this order, and the air supply / water supply from the air / water supply nozzle 24 is performed by the objective lens 21 and the auxiliary water supply port. It is ejected in 25 directions.
[0007]
As is well known, if the objective lens 21 is an electronic endoscope, it forms an image of the observation object on the CCD in the distal end portion 13. The image signal from the CCD is sent to the processor via the signal transmission cable and displayed on the TV monitor. In the case of a fiber endoscope, an image of an observation object by the objective lens 21 is formed on the incident end surface of the image fiber, and the image transmitted to the output end surface of the image fiber is provided in the operation unit 12. Observed through. The light distribution lens 22 is connected to the light source of the processor via a light guide fiber. The treatment instrument insertion channel outlet 23 communicates with the treatment instrument insertion port 19 of the operation unit 12. The air / water supply nozzle 24 is connected to an air / water supply source, and ejects air or water by operating the air / water supply button 20 of the operation unit 12. The auxiliary water supply port 25 communicates with the auxiliary water supply inlet 26 of the operation unit 12, and separately from the water supply by the air supply / water supply nozzle 24, the cleaning liquid and the dyeing liquid are sent from the distal end portion 13 toward the observation target. .
[0008]
Therefore, in the endoscope 10 having the above configuration, when dirt is generated on the surface of the objective lens 21 during the endoscope observation, the air supply / water supply button 20 is operated to supply air or water from the air supply / water supply nozzle 24 to make it dirty. Can be removed. This is a normal operation of an endoscope.
[0009]
In the present embodiment, in addition to the normal operation described above, air supply or water supply from the air / water supply nozzle 24 is performed by removing dirt from the sub-water supply port 25 or changing the direction of the sub-water supply ejected from the sub-water supply port 25. Can be used for control. 2 and 3 show this state. In a state where there is no air supply or water supply from the air supply / water supply nozzle 24, the auxiliary water injected through the auxiliary water supply inlet 26 is sent straight out from the auxiliary water supply port 25 on the end face of the tip portion 13 (FIG. 2). , 25X). On the other hand, when it is desired to change the direction of the sub-water supply from the sub-water supply port 25 to the lower side in FIG. The sub-water feeding direction changes to 25Y (FIG. 3). The degree of change in the direction of the sub-water supply can be controlled by the strength of the air or water supplied from the air / water supply nozzle 24 (ratio with the strength of the sub-water supply from the sub-water supply port 25).
[0010]
In general, it is preferable to perform the above-described operation of changing the auxiliary water supply by supplying air from the air / water supply nozzle 24 in order to prevent the auxiliary water supply from the auxiliary water supply port 25 from being diluted with water. However, when it is desirable to mix the liquid from the auxiliary water supply port 25 and the liquid from the air / water supply nozzle 24 in the body, the liquid to be mixed with the liquid from the auxiliary water supply port 25 is ejected from the air / water supply nozzle 24. It is also possible to make it.
[0011]
In the above embodiment, the air / water supply nozzle 24, the objective lens 21, and the auxiliary water supply port 25 are arranged in this order on the end face of the distal end portion 13, but the objective lens 21 and the auxiliary water supply port 25 are replaced as shown in FIG. The same effect can be obtained by arranging the air / water supply nozzle 24, the auxiliary water supply port 25, and the objective lens 21 in this order.
[0012]
In the above embodiment, the air / water supply nozzle 24 is shown as the objective lens cleaning nozzle. However, some endoscopes are also provided with an air supply nozzle and a water supply nozzle separately for objective lens cleaning. ing. In this type, one of the air supply nozzle and the water supply nozzle, the objective lens 21 and the auxiliary water supply port 25 may be arranged in a straight line.
[0013]
【The invention's effect】
As described above , according to the present invention , the objective lens cleaning nozzle that has been conventionally used only for cleaning the surface of the objective lens is used for cleaning the auxiliary water supply port, or for changing the direction (control) of the liquid from the auxiliary water supply port. An endoscope that can be used is obtained.
[Brief description of the drawings]
FIG. 1 is a front view of an endoscope distal end portion showing an embodiment of an endoscope having a sub-water supply port according to the present invention.
FIG. 2 is a side view showing a normal sub-water ejection direction from a sub-water supply port.
FIG. 3 is a side view showing a state in which the direction of auxiliary water supply from the auxiliary water supply port is changed by air supply or water supply from an air supply / water supply nozzle.
FIG. 4 is a diagram showing an entire endoscope.
FIG. 5 is a front view of an endoscope distal end portion showing an embodiment of an endoscope having a sub-water supply port according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Endoscope 11 Insertion part 12 Operation part 13 Tip part 21 Objective lens 22 Light distribution lens 23 Treatment instrument insertion channel outlet 24 Air supply / water supply nozzle (objective lens washing nozzle)
25 Sub-water inlet

Claims (2)

In an endoscope having an objective lens, an objective lens cleaning nozzle that supplies or supplies water to the surface of the objective lens, and a sub-water supply port independent of the objective lens cleaning nozzle, at the distal end of the insertion portion of the endoscope.
The auxiliary water supply port is arranged on the extension of the air supply / water supply direction from the objective lens cleaning nozzle, and the objective lens cleaning nozzle, the sub water supply port, and the objective lens are arranged in a substantially straight line in this order. An endoscope equipped with a secondary water inlet. The endoscope having the auxiliary water supply port according to claim 1, wherein the objective lens cleaning nozzle includes an auxiliary water supply port which is an air supply nozzle for supplying air, a water supply nozzle for supplying water, or an air supply / water supply nozzle also used for air supply / water supply. Endoscope.

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