Foreign body-recovering instrument for endoscope

Details Foreign body-recovering instrument for endoscope Foreign body-recovering instrument for endoscope

1999-06-08

2001-03-27

Hirsch, Paul J. (Department: 3732)

Surgery

Instruments

Forceps

C606S205000, C600S104000

Reexamination Certificate

active

06206904

ABSTRACT:

BACKGROUND OF THE INVENTION
The present disclosure relates to subject matter contained in Japanese Patent Application No. 10-164651 (filed on Jun. 12, 1998), which is expressly incorporated herein by reference in its entirety.
1. Field of the Invention
The present invention relates to a foreign body-recovering instrument for an endoscope that is removably inserted into an instrument-inserting channel of an endoscope to recover a foreign body from a body cavity, for example, a swallowed dental crown.
2. Description of the Prior Art
In general, a foreign body-recovering instrument for an endoscope has a plurality of foreign body-catching arms provided at the distal end of a flexible sheath that is removably inserted into an instrument-inserting channel of an endoscope. The foreign body-catching arms are opened or closed by remote control conducted at the proximal end of the sheath. Each foreign body-catching arm has a claw-like portion projecting from the inner side thereof. The claw-like portion is pressed against a foreign body when the foreign body-catching arms are closed to hold the foreign body.
In actual use of such a conventional foreign body-recovering instrument, a foreign body is caught by pinching it with the foreign body-catching arms from outside the foreign body.
As shown in
FIGS. 22
to
24
by way of example, the foreign body to be recovered may be an object having a smooth surface such as a dental crown
101
, or a thin metal piece such as a coin
102
, or a tubular small article
103
. In such a case, the foreign body is slippery and hence difficult to pinch with the foreign body-catching arms
50
. Therefore, there are not a few cases where it is difficult to recover the foreign body.
In particular, when a foreign body
100
is lodged in a narrow tubular cavity such as a bronchial tube as shown in
FIG. 25
, it is difficult to open the foreign body-catching arms
50
in excess of the outer diameter of the foreign body
100
and hence impossible to pinch it. Accordingly, it is extremely difficult to recover the foreign body
100
.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a foreign body-recovering instrument for an endoscope whereby a foreign body that is difficult to catch and recover by pinching can be readily caught and recovered, depending upon the shape of the foreign body.
Other objects and advantages of the present invention will become apparent from the following detailed description of illustrated embodiments of the invention.
According to the present invention, there is provided a foreign body-recovering instrument for an endoscope in which a plurality of foreign body-catching arms are provided at the distal end of a flexible sheath so that the foreign body-catching arms are opened or closed by remote control from the proximal end of the heath. The foreign body-recovering instrument has engaging portions serving as hooks for catching a foreign body. The engaging portions are formed on the respective outer sides of the foreign body-catching arms.


REFERENCES:
patent: 893055 (1908-07-01), Conner
patent: 2060366 (1936-11-01), Dunlap
patent: 2114695 (1938-04-01), Anderson
patent: 2137710 (1938-11-01), Anderson
patent: 3989049 (1976-11-01), Yoon
patent: 4085743 (1978-04-01), Yoon
patent: 4374523 (1983-02-01), Yoon
patent: 4393872 (1983-07-01), Rezuik et al.
patent: 4467802 (1984-08-01), Maslanka
patent: 5228451 (1993-07-01), Bales et al.
patent: 5609599 (1997-03-01), Levin
patent: 5667525 (1997-09-01), Ishibashi
patent: 5746747 (1998-05-01), McKeating
patent: 5849022 (1998-12-01), Sakashita et al.
patent: 5944728 (1999-08-01), Bates
patent: 6086606 (2000-08-01), Kknodel et al.
patent: 6102910 (2000-08-01), Boebel et al.

Affiliated with

Also associated with

Rating

Foreign body-recovering instrument for endoscope does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Foreign body-recovering instrument for endoscope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foreign body-recovering instrument for endoscope will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2475572