DE20107271U1 - Surgical suction irrigation tube - Google Patents

Description

MAUCHER, BÖRJES & COLLEAGUES

PATENT AND LAW FIRM

Patent Attorney Dipl.-Ing. W. Maucher · Patent and Attorney H. Börjes-Pestalozza

Select Medical Technology 5 ¹ SiSiS ⁸ Si ¹⁸ Sf ¹³ · »

Hermann Sutter GmbH ^D " ^{79102 Freiburg} S «· ^Br ·

Tullastrasse 87 Telephone (07 61) 79 174 0

79108 Freiburg Fax (07 61) 79 174 30

Unset* Aldi! · Please always specify

G 01 168 H

26.04.2001 Mr/hy/eg

Surgical suction and irrigation tube

The invention relates to a surgical suction and irrigation tube with or without external insulation and with or without high-frequency connection, wherein a valve body for connection to a suction and irrigation device is arranged at the connection end of the tube facing away from the outlet or working end and can be coupled to the tube.

A suction-irrigation pipe of the type mentioned above with insulation, which can be used for high-frequency coagulation, is known from DE 2 00 14 522.3.

From DE 94 18 004.0 a suction and irrigation tube for surgical procedures without insulation is known.

In both cases, a threaded connection is used to connect the tube to the valve body, which provides high strength and good sealing. However, when loosening, changing or attaching the tube, multiple screwing movements are required, which takes a relatively long time. If a tube is to be replaced during an operation, this amount of time is undesirable or even unacceptable.

"&Greek;

The task is therefore to create a surgical suction and irrigation tube of the type mentioned above, which has a firm and tight fit on the valve body in the position of use, but can nevertheless be quickly replaced.
5

To solve this apparently contradictory task, the surgical suction and irrigation tube defined at the beginning is characterized in that a plug-in conical connection is provided for coupling the tube to the valve body. Such a plug-in conical connection results in a firm and tight fit at the connection or coupling point and can be released and re-attached very quickly, i.e. such a conical connection allows a corresponding suction and irrigation tube to be quickly changed. At the same time, it is a cost-effective connection.

The cone connection can be formed from a projecting, tapered male cone body on one part and a hollow cone or female cone on the other part and the male cone body can be arranged on the valve body or on the pipe. The cone connection can thus be designed in different ways, but in each case a quick, inexpensive connection is made possible.

It is particularly advantageous if the female or hollow cone is arranged on a retaining sleeve connected to the valve-side end of the pipe, which protrudes radially from the outside of the pipe, and if this sleeve serves as a handle when plugging or unplugging the cone connection. In this way, the cone body is given an additional function, since it can be grasped when making or unplugging the connection and used as a handle. This also applies the plugging and unplugging forces directly in the area of the cone connection, so that even in the event of a strong jamming, the mutual cone effect of the pluggable parts also means that unplugging is quick.

can be carried out.

The cone angle of the pluggable cone bodies can be selected so that there is self-locking in the coupling position. This avoids the need for additional measures to maintain the plug connection. The two cone bodies can then maintain their position of use with sufficient safety due to the self-locking, without the need for additional measures such as a catch or locking mechanism.

The cone angle can be about one and a quarter degrees to about seven degrees, in particular about 1.4 degrees to about 6.5 degrees, relative to the longitudinal center axis of the tube or the cone body. It has been shown that with such cone angles the desired self-locking effect can be achieved, but the user can still easily release the plug connection.

The cross-section of the two conical bodies that can be plugged together can be a regular polygon or circular. In particular, a conical connection with a circular cross-section, in which a positive cone can be plugged together with a negative geometric cone, has the advantage that the respective pipe can be connected to the valve body in any desired rotational position. This is particularly advantageous if the suction-rinsing pipe 5 has a working end that is shaped in some way, for example a bent or hook-shaped or spatula-shaped end, as can be the case with suction-rinsing pipes designed as high-frequency electrodes that are intended for coagulation and/or cutting. This allows bleeding and rinsing fluid to be sucked out or rinsing fluid to be supplied, whereby the user can then always bring the working end into the most convenient position for him. In the case of a screw connection, however, such a working end can be arranged in a position relative to the valve body that is unfavorable for the user, depending on the thread start and thread play, which can be avoided by the plug-in connection according to the invention.

Conical connection is avoided with an appropriately designed cross-section of the plug-together conical bodies.

In particular, combinations of one or more of the features and measures described above result in a cost-effective connection between the respective suction-flushing pipe and the associated suction-flushing handle or valve body, which also enables the pipes to be exchanged quickly while at the same time setting a favorable working position.

) An embodiment of the invention is described in more detail below with reference to the drawing. It shows in a partially schematic representation:

Fig. 1 is a diagrammatic representation of a valve body and

three different matching suction and flushing pipes before making a plug connection and

Fig. 2 shows a longitudinal section of the plug connection between the suction-flushing pipe and the valve body, whereby the valve body has a

protruding cone body on which a

negative cone with self-locking is attached.
)

A surgical suction and irrigation tube 1, hereinafter also referred to as "tube 1" for short, can be provided with or without an external insulation 2 as shown in Fig. 2, in which case it is also suitable for obtaining a high-frequency connection as per DE utility model 2 00 14 522.3. This also applies to the tubes 1 as shown in Fig. 1.
30

In the position of use, a valve body designated as a whole by 5 is arranged at the connection end 4 of the pipe 1 facing away from the respective outlet or working end 3, with which the pipe 1 can be coupled in a liquid-tight manner in a manner to be described below.

•■

► ·

Both in Fig. 1 it is indicated and clearly shown in Fig. 2 that a plug-in conical connection 6 is provided for coupling the pipe 1 with the valve body 5.

This cone connection 6 is formed from a protruding, tapered male cone body 7 on one part and a hollow cone or female cone 8 on the other part, with the male cone body 7 in the embodiment being arranged on the valve body 5. Consequently, the female or hollow cone 8 is located on a holding sleeve 9 connected to the valve-side end 4 of the pipe 1, which protrudes radially from the outside of the pipe 1. However, it would also be conceivable to provide the male cone body 7 at this point and to arrange a negative or hollow cone 8 on the valve body 5.

The holding sleeve 9 has a dual function in that it has the cone 8 - or possibly the cone body 7 - on the one hand and also serves as a handle when plugging or unplugging the cone connection 6. The curved arrows PF 1 on two of the three pipes 1 shown in Fig. 1 indicate that the user can simultaneously perform rotary movements in order to bring the pipes 1 and especially their working ends 3 into a particularly favorable working position before the plug connection is made or completed. Plugging together is also possible in any rotational orientation of the pipes 1 because the cross section of the two pluggable cone bodies or cones is circular in the exemplary embodiment, as can be seen in Fig. 1.

The cone angle of the pluggable cone bodies is selected so that there is self-locking in the coupling position, so that no additional measures for fixing the plug connection such as a latch, locking or the use of clamping screws or the like are necessary. For example, the

Fig. 2 very small cone angles are about 1.4 degrees to about 6.5 degrees.

In order to ensure that the pipe 1 can be connected to a high frequency source without any problems, for example using the technology described in utility model 200 14 522, it is advantageous if at least one of the cone bodies, preferably both, are made of insulating material or plastic or are insulated, which has the additional advantage that these materials have a relatively high coefficient of friction with one another and the plug connection is thereby further improved.

Different designs can be seen on the working end 3 of the tubes 1 shown in Fig. 1, for example a hook, a spatula or a cylindrical end shape, which may also have a lateral outlet 10. Due to the plug-in conical connection with conical bodies with a circular cross-section, these working ends 3 can be brought into any position that is convenient for the user and their position can also be quickly corrected if necessary.

Overall, a cost-effective plug connection 6' is created between the valve body 5, which is designed as a handle or instrument with corresponding valves, and the actual instruments, whereby these can be quickly exchanged and at the same time adjusted in terms of their working position. This means that the individual instruments or tubes 1 can be quickly exchanged even during an operation.

0 /Claims

Claims (7)

1. Surgical suction and irrigation tube ( 1 ) with or without external insulation ( 2 ) and with or without high-frequency connection, wherein a valve body ( 5 ) for connection to a suction and irrigation device is arranged on the connection end ( 4 ) of the tube ( 1 ) facing away from the outlet or working end ( 3 ) and can be coupled to the tube ( 1 ), characterized in that a plug-in conical connection ( 6 ) is provided for coupling the tube ( 1 ) to the valve body ( 5 ). 2. Suction-flushing pipe according to claim 1, characterized in that the conical connection ( 6 ) is formed from a projecting, tapering male conical body ( 7 ) on one part and a hollow cone or female cone ( 8 ) on the other part and the male conical body ( 7 ) is arranged on the valve body ( 5 ) or on the pipe. 3. Suction-flushing pipe according to claim 1, characterized in that the female or hollow cone ( 8 ) is arranged on a holding sleeve ( 9 ) which is connected to the valve-side end ( 4 ) of the pipe ( 1 ) and which projects radially from the outside of the pipe ( 1 ), and that this sleeve ( 9 ) serves as a handle when plugging together or releasing the cone connection ( 6 ). 4. Suction-flushing pipe according to one of claims 1 to 3, characterized in that the cone angle of the pluggable cone bodies ( 7 , 8 ) is selected so that self-locking exists in the coupling position. 5. Suction-flushing pipe according to claim 4, characterized in that the cone angle relative to the longitudinal center axis of the pipe ( 1 ) or the cone body ( 7 , 8 ) is approximately one and a quarter degrees to approximately seven degrees, in particular approximately 1.4° to approximately 6.5°. 6. Suction-flushing pipe according to one of claims 1 to 5, characterized in that the cross section of the two pluggable conical bodies ( 7 , 8 ) is a regular polygon or circular. 7. Suction-flushing pipe according to one of the preceding claims, characterized in that at least one of the conical bodies ( 7 , 8 ), in particular both conical bodies, consist of insulating material or of plastic or are insulated.