JPH024649Y2 - - Google Patents

Description

[Detailed description of the invention] This invention makes it easy to remove large foreign objects inside the body cavity by attaching a gripping member consisting of a pair of grippers to a removable hood-shaped base at the tip of the endoscope body. This invention relates to an improvement in an endoscope that can be taken out.

In general, in addition to the original purpose of an endoscope, which is to observe the inside of a living body cavity, treatment tools such as forceps are used to remove foreign substances and perform various treatments. This is due to forceps inserted through a forceps channel in an endoscope, but for example, when trying to remove a foreign object with forceps, if the foreign object is large enough to be pulled out of the body cavity through the forceps channel. For example, the foreign body can be easily removed, but if the foreign body is too large to pass through the forceps channel, it is unavoidable to pull out the endoscope with the forceps holding the foreign body out of the body cavity. However, even in this case, there was a limit to the size of the foreign object that could be removed. In other words, since the foreign object is grasped with forceps, the size of the foreign object that can be grasped is determined by the size of the forceps, and the size of the forceps is determined by the diameter of the forceps channel through which it is inserted. It was.

In view of the current situation, the present invention has proposed a gripping member, in which at least one of the pair of grippers can be opened and closed by an operating wire inserted through the forceps channel, which is attached to the hard tip of the endoscope body. By attaching a removable attachment part to the hood attachment part provided on the tip side of the hood type base, it is possible to easily grasp foreign objects that are too large to be grasped in the past. The invention has been able to provide an endoscope that can be operated and removed while observing the object.The present invention will be described in detail below with reference to the illustrated embodiments.

Reference numeral 1 denotes a rigid distal end portion of the endoscope body, and numeral 2 denotes a hood attachment portion for a hood, a cap, etc. (not shown) on the rigid distal end portion 1 . 3 is a forceps channel, 4 is an operation wire inserted into the forceps channel 3, 5 is a guide channel in which an image transmission fiber bundle 6 and illumination light transmission fibers (not shown) are accommodated, and 8 is a lens. These are similar to conventional endoscopes.

Reference numeral 9 denotes a gripping member, which mainly consists of a pair of grippers 10, 10' and a hood-shaped base 11. The one shown in FIG. 1 is an example in which the operating wire 4 for controlling the gripping action of the gripper operates only the gripper 10', and the one shown in FIG. 10' is shown as an example of a device adapted to operate both the 10' and the 10'. First, to explain the gripping member 9 shown in FIG. 1, a support arm 12 extends from the middle of the gripper 10, and in this support arm 12, the gripper 10'
is rotatably attached by a pin 13.
An operating wire 4 inserted into the forceps channel 3 is connected to one end of the gripper 10'.
Further, one end of the gripper 10 is integrally provided with a hood-type base 11, and this hood-type base 11 is removably fitted into a hood attachment portion 2 on the rigid distal end portion 1 of the endoscope body. And this hood type base 1
Since the hood attachment part 2 into which the hood 1 is fitted is usually cylindrical, the hood type base 11 is also preferably cylindrical. In the gripping member 9 shown in FIG. 1, when the operating wire 4 is operated to the right in the figure, the gripper 10' rotates from the position shown by the solid line to the position shown by the dotted line. and 10' opens. Furthermore, when the operating wire 4 is operated to the left in the figure, the gripper 10' rotates from the position shown by the dotted line to the position shown by the solid line, and the space between the grippers 10 and 10' is closed. . This allows the foreign object to be grasped and the grasped foreign object to be thrown away. This type of gripping member has the advantage that the endoscope can be equipped with a gripping member for gripping a foreign object regardless of the diameter of the forceps channel, so depending on the size of the foreign object, a suitable forceps channel can be selected. There is no need to select an endoscope that has one.

Next, the gripping member 9 shown in FIG. 2 consists of a pair of grippers 10, 10', similar to the one in FIG.
4,14' extend, and this support arm 14,1
An operating wire 4 is pivotally attached to one end of 4' by a pin 13. In this case, it goes without saying that the supporting arms 14, 14' are rotatably pivoted to the operating wire 4. In addition, the grippers 10, 10'
One end is rotatably attached to the hood type base 11 with a pin 15.
It is pivoted by. This hood type base 11 is preferably cylindrical like the one in FIG. In the gripping member 9 shown in FIG. 2, when the operating wire 4 is operated to the left in the figure, the grippers 10 and 10' both rotate about the position of the pin 15 as a fulcrum, and the grippers 10 and
The tip of 10' (left end in the figure) is open. Conversely, when the operating wire 4 is operated to the right in the figure, both the grippers 10 and 10' rotate about the position of the pin 15, and the grippers 10 and 1
The tip of 0' is closed. This allows the gripper to grip the foreign object and throw away the gripped foreign object. Note that 16 is a see-through window provided in the support arm 14' of the gripper 10', and 17 is a foreign object. According to such a gripping member, it is possible to grip and remove a foreign object having a diameter that is approximately equal to or larger than the diameter of the endoscope.

Since the present invention is configured as described in detail above, when a foreign body is removed using a conventional endoscope, the size of the foreign object to be removed is determined approximately by the diameter of the forceps channel. If the foreign object is too large to pass through the channel,
Although it was practiced to remove the endoscope while holding it with forceps, the forceps used for this had to be large enough to pass through the forceps channel, so there was a limit to the size of the forceps themselves. Although foreign objects do not have to pass through the forceps channel, there is a limit to their size, and the forceps cannot grasp foreign objects that are far from the size of the forceps channel. On the other hand, the device according to the present invention can be attached to an endoscope regardless of the size of the forceps channel, so it can be used regardless of the size of the forceps channel. If the size of the endoscope hood attachment part of the forceps channel is different in size, it can be used by attaching it to various types of endoscopes by using attachments that match the sizes. There are advantages that can be achieved.
In addition, since the gripping member can be attached to a gripping member with a diameter that is almost the same as that of the endoscope, it is possible to easily grip and remove foreign objects that are incomparably larger than conventional gripping members. Even in such cases, the hood type base ensures visibility, so the endoscopic action is not affected at all, and operations such as grasping large foreign objects can be carried out smoothly and reliably. This is an extremely practical idea that dramatically expands the range of possible foreign object sizes and can be used by attaching it to endoscopes with forceps channels of different diameters.

[Brief explanation of the drawing]

The attached drawings are for explaining the present invention.
The figure is a vertical side view showing an example of the main part of the endoscope according to the present invention, and FIG. 2 is a vertical side view of the main part of the endoscope showing another example of the embodiment. 1; Hard end portion of the endoscope, 2; Hood attachment portion,
3; forceps channel; 4; operating wire; 9; gripping member; 10, 10';gripper;11; hood type base.

Claims (1)

[Scope of utility model registration request] At least one of the pair of grippers has a gripping member that can be opened and closed freely by an operating wire inserted through the forceps channel, and is provided on the distal end side of the rigid distal end portion of the endoscope body. An endoscope characterized in that the endoscope is attached to a hood-type base having an attachment part on the base side that is detachable from the hood attachment part.