JPS5836538A - Forceps 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 a forceps piece I that opens and closes and is used to collect tissue within a body cavity, for example, for an endoscope.

Conventionally, this type of endoscopic forceps has a pair of forceps pieces that open and close in a cupped shape, and the base ends of the forceps pieces are both polished sharply, or both are left flat. It was either the case or the case. Obviously, when both peripheral edges of each forceps piece remained flat, the force for cutting the two I#i edges was small and it was difficult to collect one tissue. In addition, if both of the blades were sharply ground, the tip of the peripheral edge of the blade would quickly become dull after a few uses, and the mesh would become misaligned, resulting in a marked loss of sharpness, making it difficult to collect am.

The present invention was made in accordance with the above-mentioned item.

The purpose of 7 is to improve the sharpness of the tissue and 6.
An object of the present invention is to provide forceps for an endoscope whose sharpness has increased durability.

An embodiment of the present invention will be described below with reference to Section 1 and FIG. 2.

FIG. 1 shows the entire endoscope forceps 1.

Reference numeral 2 in the figure is an insertion portion of the endoscope forceps 1.

The insertion portion 2 is formed by a tightly wound coil 3, and constitutes a replaceable tube body that can be elastically bent. Also,
- A forceps body 4 is fixedly attached to the tip of the entry part 2.゛A pair of forceps pieces 5.6 having a cup-shaped opening t are pivotally attached to the bell body 4 so as to be openable and closable. That is, the proximal end side I of each forceps piece s and g is the arm 7.8, respectively.
are formed in an extending manner, and each arm 7.8 is pivotally connected to the forceps body 4 via a shaft 9. In addition, the proximal ends of each arm 7.8 are similarly connected to operating wires (not shown) via links (not shown), and by pushing and pulling this operating wire, the Joki forceps pieces 5, 6 can be opened and closed. It has become.

The operating wire is inserted into the insertion section 2, and the operating section 11 has an operating body 12 (2) attached to the operating body 13, which is movable in the front-back direction, and the operating wire is connected to the operating body 13. Therefore, the operating body 1B
The operating wire can be pushed or pulled by moving it to the rudder.

On the other hand, the peripheral edges of the forceps pieces 5 and 6 that come into contact when they engage with each other have a sharp blade portion 14 by polishing the inner surface of the forceps, as shown in FIG.

The other side is left flat and has a cutting blade 15 as it is.

The cutting edge of the blade portion 14 and the flat surface of the receiving blade 15 are set so that they engage with each other.

Next, the operation when using the orienting endoscope forceps 1 will be explained.

First, the insertion portion 2 of the endoscopic forceps 1 is introduced into the body cavity using the forceps channel of the endoscope that has been inserted into the body cavity in advance. Then, before bringing the distal end side close to the site to be sampled, place the operating section 111: and advance the operating body 13 in one direction.

Open forceps pieces 5 and 6Vi. Therefore, after wrapping the tissue to be collected between the forceps pieces 5 and 6≦2, move the operating body 13 to the front side I.
: When pulled, the forceps pieces 5 and 6 close with the tissue sandwiched between them. Furthermore, when the pushing part 2 is pulled with some force, the part of the tissue sandwiched between the blade part 14 and the receiving blade 15 is broken 11+, and one tissue can be cut out from the living body.

Note that in the case of Jōki, the inner surface of the peripheral edge of the forceps piece 5 of No. 7 was ground to form the sharp blade part 14, but as shown in FIG. Blade & I (x4
may be formed.

As explained above, in the endoscopic forceps of the present invention, the peripheral edges of the forceps pieces that are opened and closed, where the forceps pieces engage and touch each other, are formed as sharp cutting edges in one forceps piece, and the tip of the forceps pieces in the other forceps piece. is a flat surface, and the cutting edge is made to mesh with the flat surface. Therefore, unlike the case where both the tips of each peripheral portion are flat.

It has good sharpness, and there is less deterioration in sharpness compared to the case where both blades have sharp edges, and the durability of the sharpness of No. 7 can be greatly improved. In addition, although only one side needs to have a sharp cutting edge, the machining process becomes easier and costs can be reduced.

[Brief explanation of the drawing]

Fig. m1 is an overall side view of an endoscopic forceps showing an example of the loincloth of the present invention, Fig. 2 is also a sectional view of the forceps piece portion, Il
Fig. s is a side sectional view of the forceps piece portion in another embodiment of the present invention. ]... Forceps for endoscope, 2... Insertion part, 5... Forceps piece. 6... Forceps piece, 1... Operation part, 14... Blade part,
15...Ukeblade. Applicant's agent Takehiko E, patent attorney

Claims (1)

[Claims] The tip of the insertion section is provided with a forceps body, and a pair of forceps pieces are attached to the forceps body so as to be openable and closable. Endoscopic forceps 1 in which the forceps pieces can be opened and closed by remote control C2 in operation JHtr2 on the proximal side of the insertion section.
; Then, the peripheral edges of the forceps pieces that engage and touch each other, which open and close, are formed as sharp cutting edges on the one forceps piece, and the tip of the other forceps piece is flat, and the edges are formed as flat edges with the seventh cutting edge. Endoscope forceps characterized by interlocking with each other.