JPS6245692Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a hard treatment instrument, and in particular, by connecting the proximal end of the hard insertion part and the operating part with a flexible member, it is possible to achieve good sniping at the target area. maintains its properties and under any conditions of use,
The present invention relates to a rigid treatment instrument that can be operated easily.

In recent years, medical endoscopes have been widely used not only for observation and diagnosis inside body cavities, but also for treatment using treatment instruments, and similarly, in chemical plants, machinery, etc., they are used not only for observation but also for treatment using treatment instruments. Industrial endoscopes are widely used for treating targeted areas, collecting samples, etc.

Treatment tools such as biopsy forceps and grasping forceps that are used by being inserted through the channel of an endoscope generally have hard or soft insertion portions.

Hard treatment instruments can only be used with a straight (formed) channel, but they have better ability to target the target area than soft treatment instruments, so when using a treatment instrument through a straight channel. A hard material is usually used.

However, with a rigid treatment instrument, the operating section cannot be bent freely relative to the insertion section, so depending on the usage conditions, it may be very difficult to operate the operating section.

For example, if the object is inserted into the target site at an angle that is close to parallel to the surface of the object, the finger rest of the treatment instrument will come into contact with the surface of the object, making it difficult to operate. become.

This idea was made in view of the above points, and by connecting the proximal end of the rigid insertion part and the operating part with a flexible member, it maintains good sniping ability for the target area. It is an object of the present invention to provide a rigid treatment instrument that has good operational functionality even under any conditions of use.

This invention will be explained below with reference to the drawings.

1 and 2 show a biopsy forceps according to a first embodiment of this invention.

In these figures, the biopsy forceps 1 includes an insertion section 2 that is inserted into a channel of an endoscope and inserted into a body cavity, etc., and a proximal side that operates the tip forceps piece provided at the tip of the insertion section 2. It is composed of an operation section 3.

The insertion section 2 includes a hard pipe 4 that is inserted into a channel, an operating wire 5 that is inserted inside the channel, and a forceps body that has a predetermined function and is attached to the distal end of the operating wire 5. 6 and more. This forceps main body 6 has a slotted groove passing through the center along the hemispherical tip side (the part included in the plane of the paper in Fig. 1), and the inside along this slotted groove has the following parts. A forceps piece is provided. That is, for example, as shown in the figure, the tip has a pair of cup-shaped cutting edges 7, 7', and each of these arm parts 8, 8' is intersected at the pivot part 9. Links 10 and 10' that are connected to open and close the cutting blades 7 and 7' are housed.

The pivot portion 9, the pivot portions 11, 11′ between the ends of the arms 8, 8′ and the tips of the links 10, 10′;
The links 10, 10' are rotatable at pivot points 12 which are pivotally connected to each other at their rear ends, and the cup-shaped cutting edges 7, 7' are opened and closed in accordance with these rotations.

That is, the ends of the links 10, 10' are connected to the connector 1.
By pulling the operating wire 5 connected at 3 toward the hand side, the connecting tool 13 is moved rearward,
At that time, each link 10, 10' side part is the forceps main body 6.
The links 10, 10' are connected to the pivot point 9 of the
The angle formed by those pivot parts 12 becomes smaller,
The cup-shaped cutting edges 7, 7' are closed so as to mesh with each other.

Contrary to the above, when the wire 5 is moved forward, the arm parts 8, 8' move each arm part 8, 8' with the pivot part 9 where the arm parts 8, 8' intersect as a fulcrum.
Pivot connection part 1 with each link 10, 10' at the rear end of 8'
1 and 11' are configured to move away from each other so that the cup-shaped cutting edges 7 and 7' are opened.

On the other hand, the tip of a flexible tightly wound coil 22, which is a feature of this embodiment, is attached to the pipe 4 on the rear end side of the insertion section 2 via a fixing member 21. , is attached to the tip of a pipe-shaped connecting member 24 that is fitted into a through hole provided in the operating section main body 23.

The operating wire 5 inserted through the flexible coil 22 and the pipe-like connecting member 24 is attached to an engaging member 25 that is inserted into and removed from the hollow portion of the connecting member 24.

One handle 26 and the other handle 27 of the operating section main body 23 are mutually supported by a pivot pin 28, and the lower end side of each handle 26, 27 has a
Ring-shaped finger hooks 29 and 30 are provided, and the upper end side of the other handle 27 is connected to the engaging member 25.

Place your fingers on both finger hooks 29 and 30 of the operating section main body 23 and apply force to move the finger hooks 30 to the finger hooks 29 and 30.
If you move away from or approach 9,
The engaging member 25 moves forward and backward in the hollow part of the connecting member 24, the operating wire 5 moves forward and backward, and the pair of cup-shaped wires 7 and 7' open and close to open and close the sample at the target site. It is designed so that it can be cut out.

In this embodiment, as described above, the vicinity of the proximal rear end of the rigid pipe 4 is connected to the flexible coil 22.
Its distinctive feature is that it is formed of

The embodiment configured in this manner not only has the operational functionality of a normal rigid treatment instrument when inserted through an endoscope channel and inserted in a state close to perpendicular to the surface of an object. , when the endoscope 32 guided by the trocar 31 is inserted into the target site at an insertion angle close to parallel to the surface of the object 33 such as the abdominal wall, as shown in FIG. Unlike when the operation part of the forceps cannot be operated due to contact with the surface, etc., the rear end side of the insertion part protruding from the channel near the proximal end of the insertion part 2 inserted into the endoscope channel is flexible. Since it is formed of a coil 22, by curving the coil 22 portion, it can be operated in an easy-to-operate state.

In other words, according to this embodiment, it is possible to easily operate the gun in almost any usage condition without impairing the shooting performance.

Biopsy forceps 41 in the second embodiment shown in FIG.
is the flexible coil 2 in the first embodiment described above.
Rubber tube 42 with appropriate rigidity instead of 2
The other configuration and operation are the same as the first one.
This is similar to the example.

In each of the above-mentioned embodiments, the rear end side of the rigid pipe 4 is constructed using the tightly wound coil 22 or the rubber tube 42, but the structure is not limited to these, and any other flexible member may be used. I can't help it.

Further, in the above description, the biopsy forceps 1 and 41 are described, but the present invention is not limited thereto and can be applied to any hard treatment instruments such as grasping forceps and scissor forceps.

As described above, according to this invention, in a rigid treatment tool, a flexible member is provided between the rigid insertion part and the operating part, which impairs good aiming ability at the target area. By curving the rear end side of the insertion portion, there is an effect that the operational functionality can be improved so that the insertion portion can be operated in an easy-to-operate state.

[Brief explanation of the drawing]

Figures 1 and 2 relate to the first embodiment of this invention; Figure 1 is a partially cutaway sectional view of the first embodiment, and Figure 2 shows the state in which Figure 1 is used. FIG. 3 is a partially cutaway sectional view of the second embodiment. 1,41... Biopsy forceps, 2... Insertion site, 3...
Operation section, 4...pipe, 5...wire, 6...forceps body, 7, 7'...cutting blade, 8, 8'...arm part, 9, 11, 11', 12... pivoting Part, 10,
10'...Link, 13...Connector, 21...Fixing member, 22...Coil, 23...Operation unit main body,
24... Connecting member, 25... Engaging member, 26,2
7...Handle, 28...Pivot pin, 29,30
. . . finger hook, 31 . . . trocar, 32 . . . endoscope, 42 . . . rubber tube.

Claims (1)

[Scope of utility model registration request] A rigid and elongated hollow insertion section, an operating section provided on the proximal side, a hollow tubular flexible connecting member that connects the insertion section and the operating section, and a connecting member disposed on the distal end side of the insertion section. The processing tool main body, the hollow connecting member and the insertion portion are inserted through to connect the operating section and the processing tool main body, and at least the continuous member insertion portion has flexibility to handle the operating force on the operating section. A rigid device characterized by comprising an operating force transmitting member that transmits an operating force to the tool body.