DE29509708U1 - Additional part for extension table - Google Patents

Description

Additional part for extension table

Extension tables are mainly used to position the patient in the case of femoral neck, thigh and lower leg fractures during surgical treatment with a splint within the bone marrow. For surgical treatment of a lower leg fracture using the nailing technique, the patient is currently positioned on the extension table in a supine position in such a way that the extension bars attached directly to the extension table are swung away under the table top and instead a lower leg counter-traction bar with extension bar and traction spindle unit is attached to the operating table. There are two options for positioning the fractured lower leg. The lower leg is either fixed horizontally or downwards with the traction spindle unit. If the lower leg is fixed downwards with the traction spindle unit, the effect is that when the intramedullary nail is driven in, the kneecap no longer obstructs the path of the intramedullary nail and the impact point is better visible, which many surgeons prefer.

The prerequisite for the result of the realignment of bone fractures, also known in technical circles as repositioning, and its surgical course is that the pulling direction of the traction spindle unit corresponds to the extremity axis. The traction spindle unit and the lower leg form a line.

In a known extension table, the height of the extension bar on the lower leg counter-traction rod cannot be adjusted, so that the traction spindle unit must be tilted downwards, whereby the lower leg is supported downwards and can be fixed with the traction spindle unit. The traction spindle unit is already inserted into the extension bar from an orthograde position up to the stop and cannot be moved to a lower position. The direction of pull does not correspond to the axis of the extremities.

The traction spindle unit can also be inserted retrograde into the extension bar, but there is a risk that the fixation of the traction spindle unit by means of a locking lever can be released through carelessness and complications can therefore arise in the fractured lower leg.

The subject matter of the invention is given by the merits of claim 1.

The invention ensures that the traction spine unit can be moved from an orthograde position into a required more orthograde position and thus the traction direction corresponds to the extremity axis.

It is advantageous to position the traction spine unit in such a way that the fractured lower leg remains fixed horizontally, so that both positioning variants are possible, while avoiding any risk to the patient from inadvertent release of the traction spine unit. A further advantage of the invention is that this additional part can be used in other positioning combinations on the extension table, thus making new positioning variations possible.

An embodiment of the invention is explained in Figures 1 to 3.

Fig. 1 View of the additional part

Fig. 2 View of the lower leg position

with additional part
Fig. 3 View of the lower slab bearing without additional part

Figures 2 and 3 show the bearing with pull spindle unit 1, lower leg 2, lower leg counter-pull rod with extension bar 3.

Fig. 1 shows the additional part according to the invention, which is inserted into a receiving device 4 of an extension table. The additional part is inserted with a vertical part (section) 5 from above into an extension beam 6 of the extension table. The vertical part of the additional part is connected to a horizontal part 7. The horizontal part may be supported against the extension beam 6 via a support 8. The horizontal part 7 is connected to a vertical part 9 leading downwards. The lower end of the right part 9 is connected to another horizontal part 10. The other horizontal part 10 has a receptacle 11 at its end facing away from the vertical part, for example for receiving a feed spindle unit. A part inserted into the receptacle 11 is secured by means of a

47-

Fixing device such as a clamping screw, lockable.

The additional part therefore has the function of lowering the extension bar.

Fig. 2 shows the lower leg support with the additional part (ZT) according to the invention which is inserted into a receiving device of the extension bar If- . The lower leg 2 is fixed to the traction spindle unit 1 via the lower leg counter-traction rod with extension rod. The traction spindle unit 1 is fixed in the holder 11 and is now in a lower position such that the traction spindle unit 1 and the lower leg 2 form a line and thus the pulling direction of the traction spindle unit corresponds to the extremity axis.

Fig. 5 shows the conventional lower leg position in which the injured lower leg 2 is fixed downwards with the traction spindle unit 1 via the lower leg counter-traction rod with extension bar 3. The traction spindle unit 1 is inserted into the extension bar from orthograde to the stop and must be tilted downwards in such a way that the lower leg 2 can be fixed in this position. The direction of traction of the traction spindle unit 1 does not correspond to the extremity axis of the lower leg 2.

Claims (1)

Protection claims Additional part for the delivery of the extension home of an extension table characterized by a Part 5 » ^It can be attached essentially vertically to the extension bar and has a holder 11 connected to part 5 which is arranged lower than the extension bar. Additional part according to protection claim 1 characterized in that the connection of part 5 with the holder 11 is made in such a way that when the additional part is attached to the holder it is located above the extension bar. Additional part according to one of the preceding claims characterized in that that the holder 11 of the additional part is identical to the holder device 4 of the extension table.