Leg holder device

The invention relates to a leg holder assembly to a bed or chair for gynecological or urological treatments and / or investigations, comprising two leg holders with one rod-shaped support and at one end thereof arranged Leg rest, said support with her leg rest the far end via a ball joint to a holder support mounted adjustable by means of a locking device can be fixed in a desired position.

US-A-4443005 discloses such a Leg holder as also in the preamble of claim 1 is defined.

said In a known leg support assembly of the above Art is the ball pivot of the ball joint in a horizontal leg of the holder support arranged that the center axis of the ball pivot horizontally and vertically to the longitudinal center axis of the patient support of the bed or directed chair. It has been found that in this Arrangement of the range of movement of the leg rest is limited and that an adjustment of the leg supports in the sense of a change the spreading of the patient's legs without a length adjustment of the supports is not possible. This means, that the investigating or treating person's leg Patients must wear during the adjustment of the leg rest. Thereby is the adjustment of the leg supports for both the patient and for treating or examiner tedious and time-consuming.

The invention is based on the object of a leg holder assembly the type described above so that the Position of the leg rests easily and without effort can be changed and both the comfort for the patient and the ease of use for the treated is increased or examiner.

This object is achieved by the fact that the Each ball joint arranged on the holder support is, that the central axis of the ball pivot in a central Center position of the joint parts of the ball joint horizontal and at an angle of approximately 45 ° to the longitudinal center axis directed the patient support of the bed or chair is.

This arrangement of the ball joint allows adjustment the leg holder in the way that they largely of natural Possibility of movement of the hip joints of the patient at the leg spread follow. is a change in the leg spread Registered possible without length adjustment of the supports, even if this in its length can be adjusted appropriately to Adjust the leg supports to people of different heights to can.

In the known leg support arrangement could the respective fixed leg holder via a clamping screw in position will. Thereby, the loosening and clamping leg holder was relatively time consuming. To eliminate this disadvantage is the invention proposes that the locking device an adjustable via an eccentric clamping device includes. This allows for quick and convenient operation the securement device with one hand.

In a preferred embodiment the clamping means comprises while a swivel on the ball socket mounted Clamp, the eccentric in the ball socket or the clamping piece is rotatably mounted and wherein with respect to a the rotational axis of the eccentric portion of the eccentric lever a clamping element is rotatably mounted, which in each case at the another part of the clamp (clamp or ball socket) attacks.

Further features and advantages of the invention will be made the following description, which in conjunction with the accompanying Drawings, the invention using an exemplary embodiment explained. Show it:<dl tsize="8"><dt>figure 1</dt><dd>a schematic end view of a patient support with the inventive leg holder assembly,</dd><dt>figure 2</dt><dd>a schematic plan view of the patient support and the leg support assembly,</dd><dt>figure 3</dt><dd>a vertical section in a central axis the ball pivot plane containing by the ball socket and the clamping device and</dd><dt>figure 4</dt><dd>a section through a part of the clamping means along the line IV-IV in FIG. 3</dd></dl>

In the figures 1 and 2, with 10, the seat or support pad a chair for gynecological otherwise not shown or urological treatments and / or examinations shown. However, it may also be the support pad act of an obstetrics bed. Near the end of the longitudinal The corners of the seat cushion are holders recordings each one attached to the bed or chair frame vertical Leg 12 and a horizontal leg 14 is disposed. The horizontal leg 14 is directed so that its The longitudinal axis 16 an angle of approximately 45 ° with the longitudinal center axis 17 of the seat cushion 10 and thus with the longitudinal center axis one lying on the seat cushion 10 patients forms.

At the free end of the horizontal leg 14 is connected via a generally designated 18 ball-joint leg holder 20 articulated. The leg support 20 includes an adjustable in length approximately L-shaped bracket 22 which at the free end their short L-leg by a ball joint 24, a leg rest 26 carries. This leg holder 20 per se is known per se and serves to support a leg of a patient, which is also shown schematically. It is with 28 the hip joint, with 30 of the thigh, with 32 the Knee-joint, with 34 of the lower leg and with the foot 36 of the Patients referred. In Figures 1 and 2, the leg holder 20, and the legs of the patient in two different spread positions reproduced, even with solid lines and once with dashed lines.

The ball joint 18, via which the respective leg holder 20 at the horizontal leg 14 is hinged, includes a ball stud 38 so to the horizontal leg 14 of the holder support is arranged such that its central axis 40 with the Longitudinal axis 16 of the horizontal leg coincides. On the ball of the ball pin 38 is a socket 42 connected to the Support 22 of the leg holder 20 is integrally connected.

To lock the leg holder to the ball stud 38 serves a clamping device 44. This comprises a clamp 46, pivotable about an axis 48 supported on the ball cup 42 and is within one of the spherical surface of the ball stud 38 matched slide 50 carries a clamping insert 52nd In the clamping piece 46 is an eccentric 54 about an Pivot axis 48 of the clamp 46 parallel axis of rotation 56 rotatably mounted. On an average eccentric 58 the eccentric 54 is a clamping member 60 rotatably supported, in which a clamping pin 62 is screwed. This chucking spigot 62 passes through a bore in the ball socket 42, and is with a head part 64 through an elastic disc 66 on the base of a recess 68 in the socket 42nd By a rotation of the eccentric lever 54 between the in Figure 3 represented by solid and dashed lines Positions is on the eccentric 58, the distance between the voltage applied to the ring 66 surface of the head 64 the clamping pin 62 and the surface facing it of the clamp 46 changed. Thereby, the clamp 46 in the direction the ball socket and the spherical surface of the ball stud 38 stretched or lifted from her.

When leg holder assembly according to the invention is the change the leg spread without a length adjustment extract the leg holder supports 22 possible. The length of the supports 22 needs to be set to the individual body size. The weight of the leg is when adjusting the leg holder transferred to the ball joint. The movement of the leg supports follows the natural movement of the legs in the hip joints, so that the adjustment of the leg supports for the patient is comfortable. When adjusting the leg holder needs the operator Peron only with one hand the leg holder to hold and pivot, while the other Hand the eccentric lever for releasing and locking the clamping device can be actuated.