Endoscopic treatment tool

Details Endoscopic treatment tool Endoscopic treatment tool

1996-07-01

1998-06-16

Buiz, Michael

Surgery

Instruments

Suture, ligature, elastic band or clip applier

606 1, 606108, 606167, 606171, 606177, 606185, 606213, 606148, 606144, 606151, 606139, 604 95, 604 15, 604158, A61B 1710

Patent

active

057661847

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

The present invention relates to an endoscopic treatment tool inserted into the body cavity through an endoscope for performing a treatment or the like.
A conventional endoscopic treatment tool such as described above comprises at the forward end thereof a treatment section for treating or performing biopsy on a vital tissue or holding the tissue, which treatment section is so structured as to open or otherwise operate similarly taking advantage of the spring characteristics or a link mechanism.
Such a tool has the disadvantage that the treatment section cannot be operated in optimum direction with respect to a foreign matter or the tissue on which biopsy or the holding operation is to be performed, with the result that the tissue and foreign matters cannot be successfully treated.
In view of this, JP-A-55-109501 discloses a treatment tool comprising a sheath section formed of multi-turn coil or a multiple coils inserted in the channel of the endoscope for connection with the treatment section, which sheath section is rotated on the operator's side so that the treatment section can be rotated in the desired direction and thus can be operated in the optimum direction.
In the case where the sheath section is inserted into the channel of the endoscope and rotated, however, the friction resistance between the outer periphery of the sheath section and the inner wall of the channel causes a skip or like irregularities in rotation, thereby sometimes making it impossible to transmit the turning effort positively to the treatment section at the forward end.
Also, forming a sheath section of a multi-turn coil or multiple coils reduces the flexibility of the sheath section. In the case where a high efficiency in rotation characteristics is sought, the insertion characteristic of the sheath section with respect to the channel is extremely deteriorated, thereby making it difficult to achieve the desired rotation characteristics. Especially, a multi-turn coil has the disadvantage that it cannot be rotated depending on the direction in which the coil is wound.
The sheath section of multiple coils, on the other hand, which is formed of several layers of coils overlapped on each other, leads to the disadvantage of an often increased diameter compared with a single coil. A sheath section formed of a multi-turn coil is a problem when considering the fact that the sheath section and the treatment section at the forward end thereof are led into the body cavity using the limited space defined by the channel of the endoscope.


SUMMARY OF THE INVENTION

The present invention has been developed in view of the above-mentioned situations, and the object thereof is to provide an endoscopic treatment tool which is capable of transmitting the turning effort to the treatment section at the forward end positively without thickening the sheath portion or adversely affecting the other functions.
In order to solve the above-mentioned problem, according to the invention, there is provided an endoscopic treatment tool which is led into the body through the endoscope channel to operate the treatment section by transmitting the operating force of the operating section from the operator's side to the treatment section at the forward end, comprising a tubular sheath adapted to be inserted into the endoscope channel, rotative operation means mounted on the operating section for rotatively operating the treatment section, and an operating wire inserted rotatably into the sheath for coupling the treatment section to the rotative operation means and having such a torque transmissivity capable of transmitting the rotation torque from the rotative operation means to the treatment section.
In this configuration, rotation of the operating wire by operating the rotative operation means rotates the forward-end treatment section with the rotation of the operating wire, thereby making it possible to orient the treatment section in a given direction. In this case, since the operating wire is inserted into the tubular sheath, the

REFERENCES:
patent: 3958576 (1976-05-01), Komiya
patent: 4018229 (1977-04-01), Komiya
patent: 4043323 (1977-08-01), Komiya
patent: 4633871 (1987-01-01), Shinozuka
patent: 5049154 (1991-09-01), Quadri
patent: 5066295 (1991-11-01), Kozak et al.
patent: 5185004 (1993-02-01), Lashinski
patent: 5263958 (1993-11-01), deGuillebon et al.
patent: 5342394 (1994-08-01), Matsuno et al.
patent: 5454821 (1995-10-01), Harm et al.
patent: 5578045 (1996-11-01), Das

Affiliated with

Also associated with

Rating

Endoscopic treatment tool does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Endoscopic treatment tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Endoscopic treatment tool will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1718982