Medical treatment device, in particular for surgical purposes

#The invention relates to a medical treatment device, in particular for surgical purposes.

#In the treatment of the human or animal body with a medical treatment instrument, in many cases it is necessary to add a gaseous or, in particular, fluid treatment agent, which can be air, water or a mixture thereof (spray). In many cases, in particular in surgical and microsurgical treatment, a cooling fluid is required, in which case it is usual to use a salt solution (NaCl).

#The treatment agent is fed to the treatment instrument through a flexible tube line, in particular a hose line. It has already been proposed to arrange the flexible tube line on or in the supply line. On account of it hollow construction, the flexible tube line is sensitive to severe bending, something which often cannot be precluded during the treatment. The life of such a flexible tube line can therefore be reckoned to be shorter than other lines, for example, electric cables. If a defective flexible tube line is exchanged, the supply line itself can therefore be used further.

#The invention and further advantages which can be attained with it are explained in greater detail in the following with the aid of preferred exemplary embodiments and the drawings. In the drawings:

#FIG. 1 shows a treatment device, according to the invention, in a perspective representation from the front;

#FIG. 2 shows a treatment instrument with associated media supply line in an axial section;

#The main portions of the treatment device 1 are the treatment instrument in the form of a hand piece 2 and a control unit 3 with control keys on its front side and with an integrated electronic control device to which the hand piece 2 is connected by means of the bendable or flexible supply line 4. The hand piece 2 bears at its front end a treatment tool 5 which can preferably be exchanged for different, selectively required tools. In the case of such treatment instruments in which the feed of a treatment agent, in particular a cooling fluid such as a salt solution (NaCl), to the treatment position is required, associated with the control unit 3 there is a pump in the form of the hose pump 6 which can preferably be added on to the control unit 3 at the side or can be integrated in said unit. The coolant line 7 which leads to the front end of the hand piece 2 extends at least in part through the supply line 4 and the hand piece 2 respectively. Arranged on the control unit 3 there is a plug-in coupling 8 into which a plug 9, which is arranged at the free end of the supply line 4, can be plugged for the purpose of connection to the electronic control device. For the purpose of positioning the control unit 3, it is possible to provide a frame or table 11 with which a holding arrangement 12 for the hand piece 2, in its standby position, is associated. In the case of the present development, a depository portion is provided in the form of a trough-shaped, oblique plate 13 which is inclined towards the treatment location and on which the hand piece 2 is supported in a form-fitting manner in a position with the tool 5 pointing obliquely downwards. The hand piece 2 is secured against lateral displacement on account of the trough-shaped form of the plate 13. The trough base is preferably adapted to the waisted form of the hand piece 2 so that a form-fitting support also results in the longitudinal direction of the latter. The plate 13 can be held by means of a supporting arm 12a, which projects away from the table 11, or from the housing of the control unit 3, in an approximately horizontal manner, and is mounted thereon preferably so that it can be swung horizontally and the length of which supporting arm 12a is variable, being is freely pivotable at the end of said arm preferably in a joint about an approximately vertical swivel axis.

#In order to be able to sterilize the depository portion (plate 13) easily as well, it is advantageous to hold the depository portion by means of a rapid-action coupling or plug-in socket, in particular to arrange it so that it can be plugged in from above, for which purpose a joint pin can be used, which pin can be plugged from above into a joint bore of the supporting arm 12a.

#The hand piece 2 consists of two portions which are arranged one after the other in its longitudinal direction, namely a drive portion 2a, which is mounted on the supply line 4, and a work piece carrier portion 2b which can be releasably secured to the drive portion's front end by means of a rapid-action coupling. Arranged in the drive portion 2a there is a suitable drive motor, for example an electric motor or a compressed-air operated turbine motor, which is encapsulated in a housing in the form of a motor cartridge 14 in the manner of a cartouche. The drive portion 2a, for the purpose of accommodating the motor cartridge 14, has a cylindrical sleeve 15 which is open on the front side and the longitudinal dimensions of which are such that it completely covers at least the housing of the motor cartridge 14. Provided on the rear side of the motor cartridge 14 there are two contact elements, preferably lying diametrically opposite each other, in particular in the form of plug-in couplings 16 which correspond with two contact elements in the form of contact pins 17 which protrude from the base of the sleeve parallel to the axis. The contact pins 17 are plugged in a housing insert piece 18 which is round in cross section, sits in an annular collar 19 arranged at the rear end of the sleeve 15 and is secured by means of at least one screw which passes radially in a hole through the rearwardly projecting annular collar 19. The insert piece 18 consists of electrically non-conductive material, in particular plastics material. There projects, moreover, from the insert piece 18 parallel to the axis a positioning pin 21 which fits into a corresponding positioning hole 22 at the rear end of the motor cartridge 14. The positioning pin 21 is arranged so as to be offset in the circumferential direction relative to the contact pins 17 and for the purposes of illustration is displaced into the sectional plane so that only one contact pin 17 is visible. The insert piece 18 has at the rear a tapered cylindrical extension 23 on which a flexible protective hose 24 is plugged and secured by means of a hose clip 24a or the like. There extend in the protective hose 24, according to the embodiment, several conductors, for example two electric cables 25, the cores of which are connected with the contact pins 17 in a manner which is not illustrated, at least one treatment agent hose, in particular coolant hose 7a, and, if applicable, a light guide, all constructed in a flexible manner.