JPS58112534A - Treating tool for endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscopic treatment tool that is inserted into a body cavity through an endoscope main body and used to capture and remove foreign objects and the like within the body cavity.

BACKGROUND OF THE INVENTION Conventionally, basket forceps as shown in FIG. 1 have been used as an endoscopic treatment tool inserted into a body cavity through an endoscope body and used to capture and remove foreign matter within the body cavity. This basket forceps includes a hand wire 1 made up of a single wire, and a basket part 2 connected to the tip of the hand wire 1.The basket parts 2 each expand outward. It is formed by bundling and fixing four wire elements 2', each of which has a crease 4 and is imparted with elasticity, with their front ends using a tip metal fitting 5 and their rear ends using a rear end metal fitting 6. has been done. The basket portion 2 and the hand wire 1 are inserted into a tube 5 in order to be guided through the endoscope main body and into a desired body cavity. t+, when the basket part 2 that protrudes from the tube 5 and captures the foreign matter in the body cavity is pulled by the hand wire 1, the wire element 2 that forms the basket part 2 spreads out.
′ has the function of resisting elasticity and compressing it. That is, when the basket part 2 is pushed out from the tube 3,
Due to its elasticity, the wire element 2' spreads outward, but when capturing and fixing a foreign object, the expanded wire element 2' is
It is compressed and pulled inward.

When operating the conventional basket forceps configured as described above, as shown in FIG. Then, by pushing out the hand wire 1, the basket part 2 is brought out from the center of the tube 3. As shown in FIG. 1, the basket part 2 which has been brought out from the center (tube 5) has its constituent wire elements 2' elastically expanded outward, and the space between the expanded wire elements 2'. Then, by pulling the hand wire 1, the four wire elements 2' forming the basket part 2 are compressed and a part of them is inserted into the tube 3, as shown in FIG. (
As shown in B), the foreign object 7 is fixed within the compressed basket portion 2 when the tip of the tube 3 is straightened. After fixing the foreign object 7 in this manner, the foreign object 7 is removed from the body cavity together with the endoscope body.

However, the conventional basket forceps are operated by operating the handle of the operating section while looking through the eyepiece of the endoscope, and the wire element 2' of the basket section 2 inside the body cavity is operated. It had the disadvantage of requiring considerable technical skill as it involved capturing foreign objects from the side.

The present invention has been made to improve the drawbacks of the conventional endoscopic treatment instruments, and includes a mesh grip section equipped with an operation wire for opening and closing the peripheral wall of the distal end, fixed to the distal end of the hand wire, The purpose of this book is to provide an endoscopic treatment instrument configured to open the peripheral wall at the distal end of the net-like grip section by operating an operating wire, and to quickly and reliably capture a foreign object from the front.

Next, the present invention will be described in detail based on examples. Third
The figure shows an embodiment of the endoscopic treatment instrument according to the present invention. In the same figure, 8F! Use 5 or more elastic wires, such as stainless steel single wires or stranded wires thereof. It is a net-like grip part formed by knitting into a cylindrical shape and fixed to the tip of the hand wire 1 with a fixing metal fitting 11. Then, the distal end peripheral wall portion 8′ of the net-like grip portion 8
is configured to elastically curve inward and converge when no external force is applied. Reference numeral 9 denotes an operation wire for opening and closing the distal end circumferential wall portion 8 of the grip portion 8. Its distal end portion is fixed to the distal circumferential wall portion 8′ of the grip portion 8, and is connected several times to the knitted elastic wire that constitutes the mesh grip portion 8. While being passed through, it is attached to the side surface of the grip part 8 and pulled together with the hand wire 1 to the operating part of the endoscope main body. 1
Reference numeral 0 denotes a tube made of flexible synthetic resin, into which the mesh grip portion 8, operating wire 9, and hand wire 1 are inserted and held, and guides the grip portion 8 to a desired foreign object within the body cavity. Yes, there are 10 tubes of this.
After the grip part 8 protruding from the center of the tube 10 captures a foreign object, when the grip part 8 is pulled into the tube 10 by pulling the hand wire 1, the grip part 8 is compressed and the foreign object is held inside the grip part B. The attachment is a tortoise that acts to hold it.

Next, the operation of the endoscopic treatment instrument according to the present invention configured as described above will be explained. First, as shown in FIG.
is inserted into the tube 10 in advance. At this time, the grip part 8' is flexible because it is formed of a mesh made of elastic wire material in a cylindrical shape, and its diameter can be reduced to some extent, so it can be inserted smoothly into the duplex 10. can do. Next, the treatment tool inserted into the tube 10 in this way passes through the endoscope body and removes the foreign object 7 in the body cavity.
It is inserted up to the vicinity of .

Then, in the body cavity, the hand wire 1 is moved to the operating wire 9.
As shown in FIG. 3, the grip part 8 is pushed out of the tube 10 and into the body cavity. In this state, when tt holding the hand wire 1 and pulling the hand wire 9 against the elasticity of the grip part 8 is pulled with the hand operation part, the grip part 8 is shortened in the length direction and its distal peripheral wall The portion 8' is expanded and opened as shown in Figure 5). The distal peripheral wall portion 8' of the grip portion 8, which has been expanded and opened in this way, is brought close to the foreign object 7 in the body cavity from the front, and the grip portion 8 is moved toward the foreign object 7.
When the operating wire 9 is released from the grip portion 8' as shown in FIG.
Due to the zero elastic repulsion force, the open end peripheral wall 8' closes and returns to its original state, and as a result, the foreign object 7 can be held into the grip section 8 and captured reliably. Thereafter, by pulling the hand wire 1, the grip part 8 is inserted into the tube 10 while being compressed from the end fixed to the hand wire 1, and grips the foreign object 7 just before the tip of the tube 10. It can be fixed within W758. Next, when the treatment instrument is pulled out from the body cavity together with the endoscope main body, the foreign object can be easily removed from the body cavity.

In addition, in the above embodiment, stainless steel material was used as the elastic wire material forming the net-like grip section knitted into a cylindrical shape, but the wire material is not limited to this, and carbon fiber material having elasticity may also be used. If carbon fiber is used,
Since it is thinner than stainless steel material and has a stronger repulsive force, it is possible to make the diameter of the grip part smaller than stainless steel material (which would be required to have the same level of foreign object capturing performance). Further, in the above embodiment, two operation wires are used for the grip section, but by increasing the number of operation wires, the operation of the grip section can be made more stable and reliable.

As described above in detail based on the embodiments, the endoscopic treatment instrument according to the present invention has a net-like grip section equipped with an operating wire for opening and closing the distal peripheral wall section, which is fixed to the distal end section of the hand wire. Since the tortoise is designed to open the distal peripheral wall of the net-like grip part by manipulating the wire and capture foreign objects from the front, it can be used to capture foreign objects from the side of the treatment instrument like conventional treatment instruments. In comparison, not only is the container easy to operate, but foreign objects can be captured and removed reliably and quickly.

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventional endoscopic treatment tool, and FIG. (B) is a diagram showing that the treatment tool shown in FIG. 1 has captured a foreign object and is in good condition; FIG. 3 is a side view of one embodiment of the endoscopic treatment and tool according to the present invention; The figure shows a state in which the mesh grip part of the treatment instrument shown in Fig. 3 is inserted into the tube, and Fig. 5 (m) shows the
FIG. 5 shows a state in which the peripheral wall at the distal end of the net-like grip of the treatment instrument shown in FIG. 5 is opened, and FIG. In the figure, 1 is a hand wire, 2 is a basket part, 3 is a tube, 7 is a foreign object, 8 is a mesh grip part, 9 is an operating wire,
10 is a tube, and 11 is a fixture. Patent Applicant Slimbus Optical Industry Co., Ltd. 1) Gen 4 庬 2) Sword (c) Akira 2 (B) 9 11 10
9% Figure 4 also Figure 5 (8)

Claims (1)

[Claims] (11) A net-like grip part knitted into a cylindrical shape using elastic wire, and a nine-handed wire connected to the rear end Km of the scissors grip part,
An operating wire for opening and closing a distal end circumferential wall of the net-like grip part, and a channel for inserting the hand wire and the operating wire while compressing the mesh-like grip part. An endoscopic treatment instrument characterized by: (2) The operating wire may be composed of two or more wires, one end of which is fixed to the peripheral wall at the distal end of the net-like grip, and which is attached to the side surface of the grip while being passed through an elastic wire forming the grip. An endoscopic treatment instrument according to claim 1, characterized in that: (3) The endoscopic treatment instrument according to claim 1, characterized in that stainless steel wire or carbon fiber is used as the elastic wire forming the mesh grip portion. (4) The endoscopic treatment instrument according to claim 1, wherein the net-like grip portion is formed by knitting five or more elastic wires.