DE7700003U - Endoscope, in particular laparoscope, with a device for introducing a pressure medium - Google Patents

Description

PATENT Attorney DIPL.-ING. J. WENZEL 7 STUTTGART HAUPTMANNSREUTE 46

Karl Storz,
Tuttlingen

₁ in particular laparoscope _/ with an egg direction for introducing a pressure medium.

The innovation relates to an endoscope _/ in particular a laparoscope, with a device arranged in the head piece for introducing a pressure medium, an opening being provided at the distal end of the shaft between the shaft and the optical tube for the pressure medium to exit.

In known endoscopes of this type, the aforementioned pressure medium is used as a washing-up liquid, making for example a continuous Irrigation of the body cavity is possible (dt-Gm 7 W 831).

Among other things, cystoscopes are used to check the function of the urethra under optical control The cystoscope must be withdrawn so that the rinsing liquid drains through a shaft window of the cystoscope in order to To avoid this, it is also known to use a sleeve which is displaceable in the longitudinal direction and is sealed off from the shaft for sealing the urethral orifice to be arranged. Through this

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PATENT ADVERTISER DIPL-JNG-J. WENZEL 7 STUTTGART HAUPTMANNSREUTE 46

there is the possibility that £ cystoscope is extremely far into the To pull back the urethra without running off substantial quantities of the irrigation fluid (DT.-GM 7 6o4 o31).

For introducing surgical instruments or insufflation tubes In non-existent natural body cavities, trocars with a trocar sleeve are known, in which a surgical instrument or an insufflation sleeve which is surrounded by a jacket tube is axially displaceable, since & forms an air channel with this trocar sleeve and on the distal Has end openings for air passage. So that this air duct can be cleaned easily, you have the The connection between the jacket tube and the trocar sleeve is easily detachable (DT-GM 7 513 482).

In the laparoscopy mentioned at the beginning, namely the laparoscopy, the endoscope can also be viewed through an abdominal wall opened, for example, by means of a trocar of the internal organs. In this case, too, air or a gas must be insufflated into the abdominal cavity (Pneumoperietoneum) to create a space so that a overview in the body cavity is possible. According to the prior art, a needle is used for this purpose which is "blind" must be passed through the abdominal wall. However, this cannot rule out the risk of injuries to internal organs, which was initially applied to the

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PATENT Attorney DIPL-ING. J. WENZEL 7 STUTTGART HAUPTMANNSREOTE 46

The end of the construction is tight.

The innovation is based on the task of eliminating this serious disadvantage and the endoscope of the aforementioned Kind to improve so that the introduction of the endoscope through the abdominal wall can take place under sight, with albo the penetration of the abdominal wall is visually checked by the doctor is used to avoid damaging internal organs.

The solution to this task through the innovation exists in one Endoscope of the type mentioned in that the endoscope shaft is at least at its distal end as a puncture cannula is formed with a pointed distal end. In this way there is the possibility of taking the endoscope first Introduce observation of the puncture by the doctor, and only then is the pneumooperitoneum applied and also Zwat under visual control.

In a further embodiment of the innovation it is provided that the optical tube opposite the puncture cannula in the longitudinal direction is movable. In this way, the puncture can be performed with the puncture cannula advanced, after which the endoscope can follow quickly and easily, without the need for special exchange processes such as with a tokar.

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PATENT Attorney DIPL-ING. J. WENZEL 7 STUTTGART HAUPTMANNSREUTE

Blows! is very advantageous that the Endoskopoptdk with the Optical tube is resiliently displaceable in the needle cannula. The spring loading facilitates the direction of the end position manipulation is essential to the doctor.

Further advantages and details of the innovation emerge from the description of an exemplary embodiment which now follows Recalling the drawing, In this show:

Fig. 1 is a side view of the innovation with advanced needle needle and

FIG. 2 shows a side view like FIG. 1, but with the puncture cannula removed and the rearward position of the cannula holder.

In Fig. 1 you can see right the ^T 'ular 9 _{4 a} n which is slightly to the left followed by a terminal Io for the fiber optic cable. Further to the left you can see a bayonet _{lock H 3} with which the many parts of the endoscope shaft that adjoin to the left are screwed, while the head with the eyepiece 9 is connected in one piece to the optical tube 3. These parts of the endoscope are largely known and therefore do not need to be explained in detail.

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PATENT ADVERTISER DtPL-ING- J. WENZEL 7 STUTTGART HAUPTMANNSREUTE 46 M 1-

According to the innovation, the sliding part 5 of the endos- §

kopschaftes has been shifted to the left by the path a, so j

that between the bayonet lock 11 and this part 5 ff

the optical tube 3 becomes visible. Through this by hand |

increasing manipulation is the spring 12 according to FIG. 2 to Ij

s amount has been expressed, which is not visible here, because t;

This spring is covered by the union nut 6 of the needle cannula 1 »As you can see, the union nut 6 is formed in one piece with the needle needle 1 and provided with corrugations 13 in the longitudinal direction, so that the needle needle 1 can easily be attached to the thread II of the movable part 5 by hand The movable part 5 of the endoscopic shaft is provided with a connection LU for the compressed air, which can escape at the diestal end between a reinforcement 7 and the puncture cannula 1. The sharpened tip 2 of the puncture cannula 1 can also be seen in FIG. 1 at the distal end.

Fig. 2 shows the innovation without the puncture cannula 1, which can be unscrewed together with its union nut from the threaded part U of the longitudinally displaceable part 5 of the endoscope shaft. In addition, the non-actuated position is shown in Fig. 2, in which the spring 12, which is supported on the stationary ring 15, the longitudinally displaceable part 5 after

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PATENT Attorney DIPL.-IN3. J. WENZEL 7 STUTTGART. HAUPTMANNSREUTE 46

pressed right to the stop on the bayonet catch 11, has.

The optic tube 3 is provided at the distal end with a reinforcement 7, are introduced into the one or more recesses 8, preferably of the proper guide is in the form of Längsschiitzep ^ This reinforcement 7 of the cannula i _A so that only a small play for movement between the needle cannula 1 and the gain must be provided 7 because the lh insufflated through the connection air through these recesses 8 EINV / anöfrei escape can. The air is routed through the air connection Ik through an opening 16 in the displaceable part 5 between the puncture cannula 1 and the optics tube 3 »

To actuate the innovation counter-stance, the doctor can push the connection Ik to the left with a pinger, whereby the puncture cannula 1 can be inserted through the abdominal wall under visual observation through the eyepiece 9 and the lens 17. Then the doctor can let go of the connection 1A , whereupon the endoscope with the optical tube 3 slides spring-loaded to the left in FIG. 1 within the puncture cannula 1, after which the view

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PATENT Attorney DIPL.-ING. J. WENZEL 7 STUTTGART HAUPTMANNSREUTE 46

for the objective 17 is completely free.

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Claims (4)

sec »* k ■ · ■, PATENTANWALT DIPL-IMG. J. WENZEL 7 STUTTGART HAUPTMAWNSREUTE 46 ^ SCEÜTZANSPRÜCHE 1. Endoscope in particular laparoscope ₃ with * a device arranged in the head piece for introducing a pressure medium, with an opening between the shaft and the optical tube for the pressure medium to exit at the distal end of the shaft, characterized in that the endoscope shaft is at least at its distal end as a puncture cannula (1) is formed with a pointed distal end (2>. 2 »Endoscope according to claim 1, characterized in that the Optical tube (3) opposite the puncture cannula (i) in the longitudinal direction is movable. 3. Endoscope according to claim 2, characterized in that the endoscope optics with the optics tube Q 3) is resiliently displaceable in the stitch cantile (1). 4. Endoscope according to claim 1, characterized in that the Puncture cannula (1) on a thread (4) of a longitudinally movable part (5) of the endoscope shaft can be screwed on. 7700003 04/07/77 PATENT Attorney DIPL-ING. J. WENZEL 7 STUTTGART HAUPTMANNSREUTE 46 5. Endoscopes according to claim k _y, characterized in that the puncture cannula Cl) is provided at its proximal end with an elongated union nut (6) provided with a corrugation on the outside. AEA & the optical tube (3) is provided at its distal end with a gain for guiding the needle cannula (l) 6 "endoscope according to claim 1, characterized in comprising as one or more recesses (8) sum Dureäilaß the pressure medium. 7700003 07.0i.77