DE8708978U1 - Endoscopic foreign body grasper - Google Patents

Description

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Endoscopic foreign body grasper

The invention relates to an endoscopic foreign body gripper, with a flexible tube, from the distal end of which a plurality of gripping arms consisting of inclined or curved wire pieces with a hook-shaped free end can be extended by means of a strand displaceable in the tube .

Such foreign body grippers are known per se. The flexible tube is guided through the working channel of an endoscope. By means of the strand, which can be designed as a rope or wire strand and is attached to a movable handle at the distal end of the tube, the gripping arms can be extended from the distal end of the tube, where they spread apart due to their curved or arched course, or they can be retracted into the tube, where the gripping arms are again moved radially towards the tube. In this case, a foreign body can be grasped by the gripping arms, which can then be retrieved from the relevant body cavity by pulling the endoscope out of the body cavity.

There are also therapies for which a blister is blown into the stomach of a patient, which then has to be emptied and removed from the stomach after the therapy has ended.

The invention provides an endoscopic foreign body gripper of the type mentioned above, which enables the emptying and recovery of such a balloon.

This is achieved according to the invention by providing in the middle of the arrangement

\ 30 a needle is arranged between the gripping arms, which is attached to a second

attached to a strand running through the pipe and can be moved independently of the gripper arms .

Thus, the invention makes it possible to perforate the balloon to be recovered by extending the needle , so that the gas escapes from the balloon and it shrinks. Then, after the needle has been retracted into the tube, the balloon envelope can be grasped and recovered using the belt drive.

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Instead of the calf/ kahfi also a slim stiletto can be used* The:

Needle can be designed as a hollow needle (in one embodiment of the invention, however, the needle is designed as a hollow needle) which opens into a hollow space (for example, as a reinforced hose)

S Is and at the same time for moving the needle and for extracting gas

And if necessary, liquids. If the hollow strand consists of a relatively thin tube, it can be reinforced with an inner wire which is sufficiently shear-resistant in the tube for the hollow needle to be pushed out,
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The invention is explained using a preferred embodiment, which can be seen at least schematically from the drawing. In the drawing:

Figure 1 shows the side view of an endoscopic foreign body gripper according to the invention and

Figure 2 is a partial perspective view of the distal end of the foreign body gripper of Figure 1.

The endoscopic foreign body grasper shown has a flexible tube 1 which is inserted in a known manner through a working channel of an endoscope |

can be passed through and connected at the distal end with an end sleeve 6.

can be seen. A wire strand 3 is movable in the tube 1, at the free end of which

End a plurality of curved wire pieces with hook-shaped *

free end of the gripping arms 2. At the ptoximal end of the J

A movable handle 7 is arranged on the tube 1, to which the |

f. wire strand 3 is attached so that by appropriate displacement of the |

handle 7 the gripping arms 2 are extended from the sleeve 6 c^er into the sleeve

6 can be withdrawn. Due to their arched course f

the elastic gripping arms 2 spread apart according to Figure 2 when they are pushed out of the sleeve 6.

As can also be seen in particular from Figure 2, a needle 4 is arranged in the radial center of the arrangement of the gripping arms 2, which is attached to a

separate strand 5 running through the pipe 1, which is attached to the pro- \

ximum end of the pipe 1 through a T-piece branching off from the pipe 1 '

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, and is attached to a separate handle 8, which

&bull; also displaceable ¹ IsL By appropriately displacing the handle 8, the needle 4 can be pushed axially out of the sleeve &eacgr; or retracted into the sleeve ä by the associated strand 5 independently of the gripping arms 2 .

In the embodiment of Figure 2, the needle 4 is designed as a hollow needle and the associated strand 5 is designed as a hollow rod. The hollow spaces of the hollow strand 5 and the hollow needle 4 are connected to one another so that gas and liquid can be discharged through the foreign body gripper.

can.

A guide device (not shown in Figure 2) can be arranged in the sleeve 6 , by which the gripping arms 2 and the needle 4 are guided and held in the correct position.

Claims (2)

VIERING & JENTSCHURA admitted to the European Patent Office
European Patent Attorneys &mdash; Representatives with European Certificates DipMng. Hans-Martin Viering · Dipl.-Jng. Rolf Jentschura · Steinsdorfstraße 6 · D-8000 Munich To attorney file 574-1 GiP Gastrointestinal Products Sales GmbH
j Ringsti. 19 B j 8221 Grabenstätt Endoscopic foreign body grasper 15 EXPECTATIONS 1. Endoscopic foreign body grasper, with a flexible tube from which distal end a/ne plurality of inclined or curved 20 Gripping arms consisting of wire pieces with hook-shaped ends can be extended by means of a strand which can be displaced in the tube, characterized in that a needle (4) is arranged in the middle of the arrangement of the gripping arms (2), which needle is fastened to a second strand (5) running through the tube (1) and can be displaced with this independently of the gripping arms (2). 2. Endoscopic foreign body gripper according to claim 1, characterized in that the needle W is designed as a hollow needle and the attached strand (5) is designed as a hollow strand into which the cavity of the 30 Hollow needle opens. 3Ö Telephone (0 89) 29 34 13 and 29 3414 · Fax (d 89) Ö2 Ö39 2Ö' Tel. 17 698 464+ < Telegram Stelnpat Munich