INTRAMEDULLARY CANNULATED GUIDE FOR FRACTURE REDUCTION WITH ENDOSCOPIC CAMERA

Abstract

The invention consists in a product for the closed reduction and, more specifically, in a new type of an intramedullary cannulated guide for fracture reduction with an endoscopic camera for use in intramedullary nailing surgeries. The intramedullary cannulated guide for fracture reduction is consisted of a flexible, unbreakable, modular and cannulated shaft, a T-handle with a hole in the upper surface, a camera, which is located at the edge of the guide, bears a lightning source and is connected wired or wireless to an image reproduction device, a sealing flange with a slot or spout, an input/output cannula for liquid suction and/or washing of the camera glass. The intramedullary cannulated guide for fracture reduction with an endoscopic camera is inserted in a bone that has suffered a fracture. The intramedullary image that the camera transmits, when it encounters the fracture point, is shown on the screen. Thus, the surgeon perceives the direction towards which the bone parts have to be pushed, in order to achieve their reduction with skeletal manipulations. After the intramedullary cannulated guide for fracture reduction is inserted, the camera is removed from the guide, by pulling out the cable of the camera, and, through the canal of the guide, the ball tip guide wire is inserted and the surgery continues as it is conducted up until today.

Claims

1. Intramedullary cannulated guide for fracture reduction which consists of a flexible, unbreakable and cannulated shaft having length from 20 to 120 centimeters, internal diameter from 2 to 9.5 millimeters, external diameter from 3 to 10.5 millimeters and a T-handle with a hole in the upper surface, and is characterized in that, at its edge, it bears a camera having diameter from 1.5 to 8.5 millimeters, with a lighting source.

2. Intramedullary cannulated guide for fracture reduction, as described in the first claim, and is characterized in that the camera is detachable from the cannulated guide for fracture reduction.

3. Intramedullary cannulated guide for fracture reduction, as described in claim 1, and is characterized in that the shaft of the guide is modular.

4. Intramedullary cannulated guide for fracture reduction, as described in claim 1, and is characterized in that its edge is blunt, smooth and non-traumatic.

5. Intramedullary cannulated guide for fracture reduction, as described in claim 1, and is characterized in that the shaft of the guide is made of radiant material at least at its edge.

6. Intramedullary cannulated guide for fracture reduction, as described in claim 1, and is characterized in that its shaft bears graduated points for measuring the length of the bone canal.

7. Intramedullary cannulated guide for fracture reduction, as described in claim 1, and is characterized in that the intramedullary cannulated guide for fracture reduction has an output fluid spout, through which the fluids that the intramedullary cannulated guide for fracture reduction encounters, during its passing through in the bone canal, are being sucked out and outflow through the gap which is formed between the shaft of the camera and the inner cortex of the intramedullary cannulated guide for fracture reduction.

8. Intramedullary cannulated guide for fracture reduction, as described in claim 1, and is characterized in that it bears an input fluid spout for washing the glass of the camera, through which a washing fluid inflows through the gap which is formed between the shaft of the camera and the inner cortex of the intramedullary cannulated guide for fracture reduction.

9. Intramedullary cannulated guide for fracture reduction, as described in the claim 1, and is characterized in that it bears a sealing flange with a slot/spout at its transverse axis, on the upper side of the shaft of the intramedullary cannulated guide for fracture reduction, at the point of contact with the T-handle.

10. A method for achieving fracture reduction comprising: inserting a cannulated guide with a camera at its edge in the bone canal; viewing the fracture on a monitor to which the camera is connected, in real time; accurate handlings of the surgeon based on the real time monitoring of the fracture; replacing the camera with a ball tip guide wire.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0014] The invention is described below, with the help of some examples and with reference to the accompanying drawings, in which the numbering is integral.

[0015] FIG. 1 shows the overall view of the intramedullary cannulated guide for fracture reduction, which consists of a flexible, unbreakable, modular cannulated shaft (1) having length from 20 cm to 120 cm, internal diameter from 2 mm to 9.5 mm, external diameter 3 mm to 10.5 mm, a camera with diameter from 1.5 mm to 8.5 mm (2) with a lighting source (3), a T-handle (4) with a hole hole on the upper surface (5), a washing cannula (6), a suction cannula (7). The part of the guide from the hole of the T-handle (5) to the camera (2) is cannulated.

[0016] FIG. 2 shows the edge of the intramedullary cannulated guide for fracture reduction, the shaft of which is modular (8), meaning it consists of many small joints to make it more flexible. The shaft (the cable) of the camera (9) passes through the canal of the guide, while on the left and on the right of the camera shaft, there is a gap (10), through which, on one hand, the suction is made, i.e. the outflow of the fluids from the canal of the bone, and, on the other hand, the washing is made, i.e. the inflow of the washing fluids (sodium chloride solution). Moreover, the ring is shown (12) on the non-traumatic edge of the guide (13), which, at the minimum, is the part of the guide that is radiant.

[0017] FIG. 3 shows the T-handle (4) from three points of view, that is from a side view, from a panoramic view and from a transverse-sectional view. In this figure the sealing flange is shown (14), which is located at the contact point of the T-handle with the shaft of the guide, slightly above from the washing (6) and suction (7) cannulas, while from the hole of the T-handle there is an exit of the wired connection to the image reproduction source (20).

[0018] FIG. 4 shows the flexibility of the shaft of the guide, which is due to its joints (8). Moreover, there are graduated marks on the shaft for measuring the depth of the bone canal (11), while on the non-traumatic blunt edge (13), apart from the camera (2), there is a radiant marking ring (12). The entire shaft of the guide can be made from radiant material or, at least, the ring at its edge.

[0019] FIG. 5 illustrates the way that the camera is wirely connected to an image reproduction device (15) and the cable of the camera (16). The connection can be wireless, as well.

[0020] FIG. 6 shows the way the intramedullary cannulated guide is inserted into the bone (17) from the entry point (19), achieving the reduction of the bone parts of the fractured bone, penetrating the fracture area (18), while, simultaneously, the camera is wirely connected to an image reproduction device (20).

[0021] FIG. 7 shows the intramedullary image (21), i.e. the image from inside the canal of the bone, that the camera transmits (2) to the image reproduction device (15), in which the bone parts are displaced, the soft tissues are shown in black color (22). Moreover, the distal part of the bone is shown (23), i.e. the bone part that is more distant from the body, as well as the central part of the bone (24), i.e. the bone part that is closer to the body, both of which appear aligned, after the skeletal manipulations that lead to the fracture reduction to be achieved (25). After the reduction of the bone parts is achieved, the ball tip guide wire (26) passes through the intramedullary cannulated guide.

MODE(S) FOR CARRYING OUT THE INVENTION

[0022] In the first example (FIGS. 1-6), the intramedullary cannulated guide for fracture reduction with an endoscopic camera (2) is inserted, under obtuse angle, into a femur bone (17) that has suffered the fracture. The entry point (19) is approximately at the pelvis, while the fracture area (18) is approximately in the middle of the femur.

[0023] In the second example (FIG. 7), the intramedullary cannulated guide for fracture reduction with an endoscopic camera (2) is inserted, into a bone (17) that has suffered a fracture. On the screen (15) the image in the inner of the canal is shown (21) as taken from the camera, when it encounters the fracture area, where the soft tissues (22) are shown in black color, while the distal bone part in white color (23). Thus, the surgeon perceives the direction towards which the bone parts have to be pushed, in order to achieve their reduction with skeletal manipulations (25). As soon as their reduction is achieved, the image in the inner of the canal (21) as shown on the screen is diversified and shows the distal part of the bone (23) and the central part of the bone (24) to complete each other, while there is no black color any more, i.e. soft tissues, that suggest a transverse, upthrust or displacement of the bone parts. After the fracture reduction, the intramedullary cannulated guide for fracture reduction with an endoscopic camera passes through the distal part of the bone (23). After the reduction of the fractured bone, the camera is removed from the guide, by pulling out the cable of the camera, and the ball tip guide wire (26) is inserted, through the canal of the guide and the surgery continues as it is conducted up until today.