TR201504604A2 - BONE GRATER FORK SPINDLE WITH CUTTER FUNCTION - Google Patents

Abstract

The invention relates to fork shafts (2) which are used for cleaning the deformed portion of the acetabular housing in all hip surgeries and which perform this cleaning by rotational movement, mounted on the inner 5 sides of the hemispherical grating (1) with a plurality of cutting blades (1.1). related property; and wherein said fork shaft (2) is connected to the hemispherical grater (1).

Description

DESCRIPTION BONE GRANER FORK SHAFT WITH CUTTER FUNCTION Technical Area The invention relates to a medical cutting device for use in all hip surgeries.

The invention is particularly useful in the half-bone used to carve the leg bone (acetabulum) used in orthopedic surgery. It helps to give rotational movement to the grater by mounting the grater arm and the grater. The body is related to the shaft configuration.

State of the Art It fulfills the function of the acetabular socket in which the femoral head in the hip joint moves. acetabular cup of different diameters instead of is used. The prosthetic sphere, which functions as the femoral head, is placed in the acetabular area in different diameters. hip by moving within the polyethylene or ceramic piece placed in the acetabular cup. performs the function of the joint.

As a result of the deformation of the acetabular socket, the acetabular cabinet is fully assembled to the acetabular socket. is important. Prior to insertion of the acetabular cabinet into the deformed socket The deformed parts of the housing need to be cleaned. Acetabular socket, femur head being the center of movement and said slot being a vital point for leg movement Due to this reason, the cleaning of the deformed slot and the preservation of the measurement tolerances are meticulously and carefully. needs to be done. In order to fulfill these requirements, the mentioned acetabular called hemispherical grater or hemispherical reamer, which varies according to the radius of the slot medical devices are used.

The hemispherical grater, which is chosen in accordance with the radius of the acetabular slot, is inserted into the said slot. the said acetabular socket by being seated and rotated on its own axis with a certain acceleration. By cleaning the deformed parts, said acetabular cabinet is fully seated in the socket. is provided.

At the stage of cleaning the deformed parts of the acetabular socket, said hemisphere It is very important that the grater processes the desired full diameter size. In other words, pelvis in hip arthroplasty During the opening of the slot in the bone where the acetabular implant will be mounted, with a hemispherical grater, The slot in question cannot be in full spherical form and the depth of the opened slot is exactly as desired. its absence is a technical problem experienced in the state of the art.

Such as the form of the slot to be opened is not fully spherical and not in the desired depth dimensions. to fix the problem; During the application, the surgeon uses a circular, up-down linear and oscillating hand. With these movements, it is tried to ensure that the grating depth is equal to the hemisphere.

As can be seen in the images of the previous technique given in figure-6 and figure-7, the desired slot of the surgeon The necessity of making an oscillating hand gesture to get in shape causes unnecessary width and may cause malfunction. In addition, as seen in figure-7, the radius of the grating sphere There are grater blades in only a part of the size. The mentioned grater blades since it is not on the entire surface of the sphere, that is, the grater blades on the sphere surface Due to the absence of surfaces, the surgeon inserts the grater deeper into the socket. dimensions should be printed.

As a result, the desired diameter and depth of the slot to be planed while grating is done. There is a necessity for the personal dexterity of the surgeon to reach its values. It is a factor that complicates the surgical procedure.

In the patent application numbered US7901405, the sphere with the cutting blades is on the structure. While positioning the shafts in a crosswise manner, as explained above, these shafts There are no cutting blades on the spherical surface on which it is mounted. Cut this way oscillating hand movement of the surgeon for the carving to be done with the ball with the blades. mandatory. It has a range that extends from the highest peak of the sphere to the body part where the largest diameter is It has a planar blade configuration.

In many patents applied for on this subject, alternatives to increase the cutting performance of the blades are available. Both the arrangement and the geometrical shape of the said cutting blades on the sphere. The efficiency of the cutting process is increased with the changes made in their structure. Also hemisphere Both the positions of the shafts used to transmit the rotational force given to the grater and the modular for easy evacuation of the pieces broken off from the bone surface onto the hemispherical grater. Inadequate cutting performance level experienced in the designs made, new design and connection with function it has made it necessary to build a shaft.

Purpose of the Invention An aim of the invention is to eliminate the disadvantages in the state of the art, Planing in the pelvic bone socket in hip arthroplasty where the acetabular implant will be inserted It is to ensure that the process takes place without the need for oscillating hand movements.

One object of the invention is to plan the grating for acetabular implant mounting by the surgeon's hand. It is to ensure that it is made according to technical references independent of its capability.

An object of the invention is to determine the bone size of the hemispherical grater that carves the acetabular implant prior to assembly. It is to ensure that the depth of progress in the slot is measured in a controlled manner.

Another object of the invention is that the hemispherical grater that performs the engraving is angled by the unnecessary oscillating motion. It is to prevent the formation of minimal tissue damage as a result of the grating process.

Another aim of the invention is to damage the tissue membrane to the desired depth and diameter dimensions in the engraving process. It is to ensure that the patient recovery process can be kept shorter by performing it without

Another object of the invention is to act as the element that transfers the rotational motion to the said hemisphere grater. It is to ensure that the spindle group that serves is also the cutter blade feature.

Another object of the invention is to use cutting blades suitable for cutting the entire surface of the hemispherical grater. is to provide an efficient cutting process.

To realize all the advantages mentioned above and which will be understood from the detailed description below the present invention; It brings many conveniences with its mentioned features.

Structural and characteristic features and all advantages of the invention are given in the following figures and these figures. It will be understood more clearly thanks to the detailed explanation written with references, therefore The evaluation should also be made by considering these figures and detailed explanations.

Brief Description of Figures Figure 1: is the disassembled perspective view of the hemispherical grater and the fork shaft.

Figure 2: An assembled perspective view of the hemispherical grater and the fork shaft.

Figure 3: perspective view of the hemispherical grater.

Figure 4A: perspective view of the tine cutter blades.

Figure 43: a view of the tine cutter blades from a different angle.

Figure 5A: view of alternative fork shaft geometry.

Figure SB: view of alternative fork shaft geometry.

Figure SC: view of alternative fork shaft geometry.

Figure 6: is the view of the prior art bone carving application.

Figure 7: prior art hemispherical grater Reference Numbers 1. Hemispherical grater 1.1 cutting blades 1.2 mounting channel 2nd fork shaft 2.1 fork arms 2.2 fork spindle blades Detailed Description of the Invention In this detailed explanation, the implant to be mounted in the acetabular socket is mentioned before assembly. hemisphere, which is the medical instrument used to clean the slot and make it suitable for assembly The innovation related to increasing the cutting capabilities of the grater (1) with the help of the fork shaft (2) is explained.

Protruding cutting blades (1.1) on the hemispherical grater (1) manufactured as spherical and these cutting blades (1.1) are in the form of a full semicircle in the area to be operated. It is intended to create a spherical nest. In Figure-6, the type of surgical operation belonging to the previous technique is seen. As seen in this figure, the hemispherical grater (1) is more efficient carving in the slot. oscillating rotation movements in all directions by the surgeon in order to is carried out. In fact, this oscillating motion mentioned is an undesirable movement in the operation. form. Because damage to the bone tissue structure becomes a high probability. In figure-7 on the other hand, hemispherical grater belonging to the previous technique is seen. Cutting blades as seen in this application does not cover the entire surface of the sphere. Also, the absence of blades in the equatorial region of the sphere and Due to this region called skirt, the grater is entered into the slot in deeper dimensions. required. Due to these geometrical structures of the present hemisphere graters, surgical During the process, it is ensured that the slot has unnecessary width and depth.

In figure-1 and figure-2, hemispherical grater (1) and fork shaft (2) with new design are seen. As in the previous art, the fork shaft (2) and the hemispherical grater (1) are manufactured separately from each other. is being done. However, the cutting blades (1.1) of the hemispherical grater (1), especially in the equatorial region, It is a difficult and costly process to create. However, as described above, the hemispherical grater (1) The fact that it has cutting blades (1.1) especially in the equator region is beneficial for the efficiency of the operation. It is important. In order to meet this need, changes have been made on the fork shaft (2).

In order for the modified fork shaft (2) to be mounted on the hemispherical grater (1), the equator Mounting channels (1.2) have been created in the region. The clevis shaft (2) is attached to the inner part of the hemispherical grater (1) from the mounting channels as seen in figure-2. fastened and mounted. One side assembly of the fork shaft arms (2.1) with the fork shaft (2) on the other hand, the hemispherical grater (1) is rotated by providing a hand tool connection. it provides. The most important part for the invention is the tine blades (2.2). (2) half of the clevis shaft assembling the ball grater (1) as in fig. 2, the tine blades (2.2) of the hemispherical grater (1) It is made to remain on the surface. In this way, the hemispherical grater (1) cuts the blade in the equatorial region. elements are found.

In Figure-3, the function of the tine blades (2.2) on the outer surface of the hemispherical grater (1) is fully is seen. As with other cutting blades (1.1), the hemispherical grater (1) rotates with the fork spindle blades (2.2) also function in carving the bone socket. Figure-4A and figure The cutting geometries of the tine cutting blades (2.2) in dB are seen from different angles.

Alternative fork shaft (2) geometries are shown in Figures 5A, SB and 5C. According to surgeon preference Different types of fork spindles (2) can be used to increase the number of tine cutting blades (2.2). Same Appropriate fork shaft (2) can be used depending on the type of hand tool to be used at the same time.

Claims (1)

CLIENTS Invention, fork shafts (2) mounted from the inside to the equator region of the hemispherical grater (1), on which there are many cutting blades (1.1), used for cleaning the deformed part of the acetabular socket in all hip surgeries and performing this cleaning by rotational movement. related to the feature; it contains fork shaft cutting blades (2.2) located at the end of the fork shaft arms (2.1) so that the hemispherical shaft (2) remains on the outside of the equator region of the hemispherical grater (1) at the part where the said fork shaft (2) is in contact with the hemispherical grater (1). It is related to acetabular slot reamer hemispherical grater (1) and fork shaft (2) according to claim 1, and its feature is; it contains at least two mounting channels (1.2) opening to the equator region in order to ensure the assembly of said fork shaft arms (2.1) to the hemispherical grater (1).