DE8119209U1 - Device for breaking kidney stones - Google Patents

Description

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Applicant: Richard Wolf GmbH, Pforzheimer Str. 24, 7134 Knittlingen

Device for breaking kidney stones

The innovation relates to a device for breaking up kidney stones using one with the distal one Front end to be brought into contact with the stone, an ultrasonic vibration generating, piezoelectric transducer connected hollow probe with suction connection.

Devices of the aforementioned type (DE-PS 2o 53 982) have the advantage over other ultrasonic transducers that Kidney stones can be shattered without explosive disintegration, since the distal end of the front end of the ultrasound transmitting Hollow probe comes to rest directly on the stone. The explosive shattering led to small Stone fragments, for example, got into goblet niches and, in the event that these were overlooked and not removed, to form new ones, again led to kidney stones to be removed. To avoid this, optics can be used after removing the ultrasonic hollow probe different viewing directions in order to be able to carry out a follow-up check or, if necessary, grasping forceps to remove larger concretions.

The task of the innovation is now,, .using

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the device mentioned at the beginning, the fine stone particles resulting from the crushing of the stone immediately by means of supplied rinsing liquid without building an unacceptable Suction pressure in the renal pelvis. f

In devices of the type mentioned at the outset, this object is achieved in that large lateral flushing channels are formed between an outer shaft with a circular cross-section and the circumference of an oval shaft running through it
and the oval shaft, one on top of the other, accommodates the optics, which are angled twice proximally, a suction channel surrounding the hollow probe with a free ring spacing, and the light guide.

This solution will be between the circumference of the oval
The shaft and the inner circumference of the circular cross-section outer shaft larger crescent-shaped spaces for the supply of flushing fluid created, and the rinse with fine dust particles of the shattered stones, by the comparable> tively wide annular space between the hollow probe and the wall of the suction duct, and through the hollow probe self,
be sucked off in such quantities that no major inadmissible pressures arise in the renal pelvis.

The innovation is explained below with reference to the drawing, in which an exemplary embodiment is shown. Show it:

Figure 1 The side view of a device according to the innovation,

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FIG. 2 shows a cross section along the line A to B of FIG. 1.

The device for breaking kidney stones according to the Example consists of an outer shaft 1 with a circular cross-section. A cross section extends through this outer shaft 1 oval guide shaft 2, between the circumference and the inner circumference of the outer shaft 1, two sickle-shaped, relatively large spaces 3 and 4 are formed for the supply of rinsing liquid.

The oval shaft 2 takes the optics 5 one above the other, the proximal

times angled twice, and a channel 6 and a |

Light guide 7 on both sides within the shaft 2 f

the optics 5 and the channel 6 runs. '

The hollow probe 8 runs through the channel 6 and is attached proximally to " a piezoelectric that generates ultrasonic vibrations

Converter 9 can be coupled and the proximal side to an Abis

suction line can be connected. Between the hollow probe 8 and the inner wall of the channel 6 is a suction

channel serving, relatively wide annulus 1o in front; see. «

The hollow probe 8 is with the distal front end on the to be smashed Kidney stone is brought to the plant and through the sickle-shaped rooms 3 and 4 is a Stone is supplied with a rinsing liquid, which is via the suction

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channel 1o and also via the hollow probe 8 together with the small stone particles of the kidney stone to be smashed is removed. By training the proportionately large sickle spaces 3 and 4, no unacceptably high and thus harmful pressure builds up in the renal pelvis, since the Rinsing liquid over the relatively wide annular space 1o and the hollow probe 8 can be sucked off.

Claims (1)

Patenttnwfilte j "; ^r j ',"', '",'',','' Dr. Hugo Witeken::: · j \ ; '·;"; DlpMng, Thomas WHcken " Sample track 1.2400 Lübeck 1 Applicant: Richard Wolf GmbH, Pforzheimer Str. 24, 7134 Knittlingen Claim to protection Device for the disintegration of kidney stones using a with the distal end of the face to the stone System to be brought to a hollow probe connected to a piezoelectric transducer that generates ultrasonic vibrations with suction connection, characterized in that between an outer shaft (1) of circular cross-section and the circumference of an oval shaft (2) running through it, large lateral flushing channels (3, 4) are formed and the oval shaft (2) one on top of the other, the proximally double-angled optic (5), one the hollow probe (8) with a free one Ring spacing as suction channel (1o) surrounding channel (6) and the light guide (7).