LOWER LIMB TRACTOR AND POSITIONER FOR HIP ARTHROSCOPY AND OSTEOSYNTHESIS SURGERY

Abstract

The present invention belongs to the field of means of transport, personal means of transport or arrangements specially adapted for the sick or the disabled; chairs or operating tables; dentist chairs; burial devices specifically to the operating tables and their accessories, consisting of a sacral support that is anchored to the operating table with two handles with two traction arms that are installed on the shafts of the sacral support and then the suitable perineal support is placed either for hip or femur osteosynthesis surgery or arthroscopy, with a lateralizing bar that allows using the image intensifier to the full extent of the limb without interference.

Claims

1. Lower limb tractor and positioner for hip osteosynthesis surgery and arthroscopy CHARACTERIZED in that the low profile sacral support (10) has a crescent shape (18) with a height between 95mm to 105mm with two support shafts (14) in its distal end (15) which has traction arms (13) attached in a swiveling ball end (3) in each of the two support shafts (14) which allow moving the traction arms (13) up to 135° of ball trajectory; a crescent-shaped perineal support (16) with a crescent-shaped foam coating (19) with a radiolucent post (20) that has inside a right transverse wing (22) and a left transverse wing (21) that receives pressure of the traction in the right region (24) and in the left region (23) of the adductors without putting pressure on the genitalia by the crescent-shaped hole (25); and a lateralizing bar (17) which function is to move the lower limb away from the traction arm (13) to have a better view of the limb with the image intensifier without interference, where the lateralizing bar (17) has a rail (27) and an adjustment nut (28) to exchange the position and size of the boots (26) for fixing the equipment feet.

2. Lower limb tractor and positioner for hip osteosynthesis surgery and arthroscopy according to claim 1, CHARACTERIZED in that the sacral support (10) has two braces (12) with rails (29) as a means of attaching accessories to surgical beds.

3. Lower limb tractor and positioner for hip osteosynthesis surgery and arthroscopy according to claim 1, CHARACTERIZED in that the crescent-shaped perineal support (16) has two parts, a first part formed by a support post (20) made up of carbon fiber and a second part made up of a polyurethane foam coating (19) to cushion the pressure of the traction; where the crescent-shaped perineal support (16) makes that the support is in the adductor muscles without pressing the perineum when a traction of 25 kg of force is made, avoiding injuring the genitalia and the pudendal nerve.

Description

DESCRIPTION OF FIGURES

[0012] FIG. 1: Shows a general image of the lower limb traction and positioning equipment for hip arthroscopy and osteosynthesis surgery coupled to traction arms to be adjusted to a known surgery table.

[0013] FIG. 2: Shows a perspective view of the sacral support of the lower limb traction and positioning equipment mounted on the surgery table with the braces.

[0014] FIG. 3: Shows a side view of the sacral support of the lower limb traction and positioning equipment.

[0015] FIG. 4: Shows the distal end of the sacral support with its support shafts at 0°.

[0016] FIG. 5: Shows the distal end of the sacral support with its support shafts at 45°.

[0017] FIG. 6: Shows the perineal post with protective foam.

[0018] FIG. 7: Shows the perineal post without protective foam.

[0019] FIG. 8: Shows a traction arm with the lateralizing bar for adjusting interchangeable boots

[0020] FIG. 9: Shows in detail the lateralizing bar for adjustment with lateral displacement of interchangeable boots.

[0021] FIG. 10: Shows the formation of a 135° angle with the sum of the 90° angles of the traditional arms plus the additional 45° angles of the support shafts of the distal end of the sacral support.

[0022] The sacral support equipment of the lower limb traction and positioning equipment consists of a sacral support (10) that is anchored to the surgery table (11) with two handles (12). It has two traction arms (13) that are installed on the support shafts (14) of the distal end (15) of the sacral support (10).

[0023] When the traction arms (13) are installed on the support shafts (14), the appropriate perineal support is placed, either for hip or femur osteosynthesis surgery or arthroscopy. It also has a lateralizing bar (17) that allows using the image intensifier to the full extent of the limb without interference.

[0024] The equipment called lower limb tractor and positioner for hip osteosynthesis surgery and arthroscopy provides four solutions that improve the versatility, functionality and utility of the other existing equipment. The sacral support (10) is low profile with a height measurement (18) between 95 mm to 105 mm, allowing another surgical equipment to move through the lower part measured with the height of the surgical table to which it is adjusted; such as the image intensifier, without the displacement of the other surgical equipment interfering with the surgical procedure being performed.

[0025] It can be anchored to any surgical table to turn it into an orthopedic traction table with its two handles (12).

[0026] The sacral support (10) has in its most distal part of the distal end (15), two movable support shafts (14), where the traction arms (13) are installed coupled to a spherical termination (33) of each one of the two support shafts (14), which allow the movement of the traction arms (13) up to 135 .sup.0; where these support shafts (14) are mobile in the horizontal direction and add 45° more of movement to the conventional arms that have 90° of movement in the horizontal plane, for a total of 135° of movement in a spherical sweep of the traction arms (13).

[0027] The lower limb tractor and positioner for hip osteosynthesis surgery and arthroscopy has two types of perineal support, a conventional radiolucent perineal support and another crescent perineal support (16) with a crescent-shaped foam coating (19) with a radiolucent post (20) that has inside a right transverse wing (22) and a left transverse wing (21) that receives the pressure of the traction in the right region (24) and in the left region (23) of the adductors without putting pressure on the genitalia through the crescent-shaped cavity (25).

[0028] On the other hand, the boots (26) for fixing the feet of the lower limb tractor and positioner for hip osteosynthesis surgery and arthroscopy are interchangeable. This feature allows placing a lateralizing bar (17) which function is to move the lower limb away from the traction arm (13) in order to have a better view of the limb with the image intensifier without interference. This feature with a lateralizing bar (17), rail (27) and adjustment nut (28) also allows changing the position and size of the boots (26), such as placing a smaller boot (26) to make traction of the lower limb in children and adolescents.

[0029] The hip positioner and tractor equipment are adapted as an accessory to a conventional surgery table (11) as follows:

[0030] 1. A brace (12) for fixation with the side rails (29) is placed on each side of the surgical table (11).

[0031] 2. The sacral support (10) is coupled to the braces (12) by means of two small rails (29) that are on the sides of the sacral support (10), thus remaining fixed to the surgery table (11).

[0032] 3. The perineal support is placed in the right hole (30) or in the left hole (31) that has the distal end (15) of the sacral support (10). The hole to be chosen depends on the side on which the surgery is to be performed, that is, if the right side of the patient is to be operated, the support must be placed in the hole (30) that corresponds to the right side of the patient.

[0033] Depending on the type of surgery, the appropriate perineal support will be placed, the conventional cylindrical perineal support for conventional osteosynthesis surgeries or the crescent-shaped perineal support (16) that has a crescent shape for arthroscopic surgery.

[0034] 4. The next step is the placement of the traction arms (13), one of the traction arms (13) has an endless screw (32) and goes on the side where the surgery is performed, the other arm (13) is placed on the opposite side.

[0035] The patient can be moved and mounted on the sacral support (10) and the feet are attached to the boots (26) of the traction arms (13).

Preferred Embodiments

[0036] Braces (12) are attached to rails (29) known as a means of attaching accessories to surgical beds.

[0037] The sacral support (10) with a profile between 95mm and 105mm is adjusted with its braces (12) to the surgical bed (11), allowing an image intensifier to be easily placed without interfering with the accessory; where the sacral support (10) at its distal end has a support shaft (14) on each side and a traction arm (13) is placed on each of the support shafts (14).

[0038] These shafts have the particularity of being able to scale at 45° individually with respect to the longitudinal shaft of the sacral support (10). The escalation of the support shafts (14) allows the movement of the arms in the horizontal plane to reach 135°, that is to say that the traction arms (13) can have a movement range of 135° of a sphere.

[0039] The perineal support is placed in the corresponding hole on the side of the surgery. The equipment comes with two perineal supports, a simple cylindrical support used in conventional hip and femur osteosynthesis surgeries and a crescent-shaped perineal support (16) for arthroscopic hip surgery with a crescent shape with a radiolucent post (20) made of carbon fiber with transverse wings (22), (21) that allows the hip to be easily dislocated and prevents traction from being made without compressing the genitalia, allowing the counter-traction to be made on the thighs in contact with the regions (23) and (24) to avoid compression of the pudendal nerve.

[0040] In this case, the surgery will be performed on the left side, the endless screw arm (32) is on the left side, as well as the crescent-shaped perineal support (16). The arms have a universal joint that allows them to be moved in the horizontal plane 90° and when the support shafts (14) to which they are attached are scaled, the movement is extended to 135° of spherical sweep.

[0041] The lateralizing bar (17) is attached by removing the foot support boot (26) and the lateralizing bar (17) is placed, in this lateralizing bar (17) the boot (26) is fixed, leaving the lower limb free of interference to the use of the image intensifier.

[0042] The crescent-shaped perineal support (16) has two parts, a first part made up of a support post (20) which for the case is made up of carbon fiber and a second part made up of a polyurethane foam coating (19) to cushion traction pressure. The crescent-shaped perineal support (16) makes that the support is on the adductor muscles without pressing the perineum when a traction of 25 kg of force is made, avoiding injuring the genitalia and the pudendal nerve.