CN116035649A - Minimally invasive acetabular rasps for hip replacement - Google Patents

Abstract

The invention discloses a minimally invasive acetabular file for hip joint replacement, which includes a file head, a connecting part and a manual handle, the upper part of the connecting part is connected with the manual handle, and the lower part of the connecting part is connected with the file head, and the connecting part includes an upper connecting head, a connecting rod and a The lower connecting head, the connecting rod is a 90° bending rod structure, the upper part of the connecting rod is connected to the upper connecting head, the lower part of the connecting rod is connected to the lower connecting head, the upper part of the upper connecting head is provided with an upper turning rod, and the lower part of the lower connecting head is provided with The lower rotating rod, the upper rotating rod and the lower rotating rod rotate simultaneously. The beneficial effects of the present invention are as follows: through the design of the 90° bending rod, only two small surgical wounds need to be cut to carry out the operations of filing and hammering, which realizes minimally invasive surgery and greatly reduces the damage to patients; The structure is simple, and the operation convenience is equivalent to that of the prior art.

Description

Minimally invasive acetabular rasps for hip replacement

technical field

The invention relates to a minimally invasive acetabular rasp for hip joint replacement, belonging to the technical field of medical instruments.

Background technique

Hip joint replacement refers to a prosthesis similar to human bone joints made of metal materials with good biocompatibility and mechanical properties. The artificial joint is used to replace the articular surface destroyed by disease or injury by surgical methods. The purpose is to It is a relatively mature and reliable treatment method to resect the lesion, remove the pain, restore the activity and original function of the joint, and rebuild the normal function of the patient's hip joint.

Hip replacement surgery requires the use of an acetabular rasp to file away damaged tissue at the site of the injury before replacing the prosthesis. The femoral articular surface occupies 2/3 of the head area and is embedded in the acetabulum. The lunate surface of the socket surrounds the acetabular fossa, and the fossa is filled with fat. Before the replacement, the acetabular fossa needs to be polished to facilitate the insertion of the artificial prosthesis . In the prior art, when using an acetabular reamer to file out damaged tissue, as shown in FIG. 1 , in order to facilitate the operation of the acetabular reamer, a large surgical wound A needs to be cut. For patients with large surgical wounds, it is easy to damage other healthy tissues during incision, resulting in greater damage, greater risk of infection, and longer recovery time.

Contents of the invention

The technical problem to be solved by the present invention is to provide a minimally invasive acetabular file for hip joint replacement. The minimally invasive acetabular file is designed with a 90° bending rod, and only needs to cut two small surgical wounds to perform file and hammer. The single-shot operation realizes minimally invasive surgery and greatly reduces the damage to the patient.

The present invention is realized through the following scheme: a minimally invasive acetabular file for hip joint replacement, including a file head, a connecting part and a manual handle, the upper part of the connecting part is connected to the manual handle, and the lower part of the connecting part is connected to the file head, The connecting part includes an upper connecting head, a connecting rod and a lower connecting head, the connecting rod is a 90° bent rod structure, the upper part of the connecting rod is connected to the upper connecting head, and the lower part of the connecting rod is connected to the The lower connecting head, the upper part of the upper connecting head is provided with an upper rotating rod, the lower part of the lower connecting head is provided with a lower rotating rod, and the upper rotating rod and the lower rotating rod rotate simultaneously.

A detachable support rod is provided between the upper connector and the lower connector.

The angle between the vertical part of the connecting rod and the manual handle is 40°.

The inside of the connecting rod is a hollow structure, and the inside of the connecting rod is provided with a transmission connection mechanism, and the upper rotation rod is connected with the lower rotation rod through the transmission connection mechanism inside the connection rod.

The upper rotating rod is connected to the transmission connection mechanism through the upper connection head, and the lower rotation rod is connected to the transmission connection mechanism through the lower connection head.

The upper rotating rod is inserted into the manual handle, and the lower rotating rod is inserted into the file head.

The upper part of the upper turning rod is a threaded structure, which is threaded into the manual handle.

The lower part of the lower turning rod is a threaded structure, which is connected into the file head through threads.

The upper part of the support rod is provided with a length adjustment mechanism, the lower end of the upper connector and the upper end of the lower connector are both provided with grooves, and the two ends of the support rod are respectively inserted into the corresponding grooves.

The beneficial effects of the present invention are:

1. The minimally invasive acetabular file for hip joint replacement of the present invention is designed with a 90° bending rod, and only needs to cut two small surgical wounds to perform file and hammering operations, realizing minimally invasive surgery and greatly reducing damage to the patient;

2. The minimally invasive acetabular reamer for hip joint replacement of the present invention has a simple structure, and its operation convenience is equivalent to that of the prior art.

Description of drawings

Fig. 1 is a schematic diagram of the prior art of a minimally invasive acetabular reamer for hip joint replacement according to the present invention.

Fig. 2 is a front view exploded schematic diagram of the minimally invasive acetabular reamer for hip joint replacement of the present invention.

Fig. 3 is a front view schematic diagram of the minimally invasive acetabular rasp for hip joint replacement of the present invention.

Fig. 4 is a schematic diagram of the use state of Embodiment 1 of the minimally invasive acetabular reamer for hip joint replacement of the present invention.

Fig. 5 is a formal structural schematic diagram of Embodiment 2 of the minimally invasive acetabular reamer for hip joint replacement of the present invention.

Fig. 6 is a schematic diagram of the use state of Embodiment 2 of the minimally invasive acetabular reamer for hip joint replacement of the present invention.

Fig. 7 is a schematic exploded structure diagram of Embodiment 3 of the minimally invasive acetabular reamer for hip joint replacement of the present invention.

In the figure: 1 is the file head, 2 is the connecting part, 3 is the manual handle, 4 is the up-rotating rod, 5 is the down-rotating rod, 6 is the support rod, 7 is the length adjustment mechanism, 8 is the groove, and 9 is the surgical wound A, 10 is the surgical wound B, 11 is the surgical wound C, 21 is the upper connector, 22 is the connecting rod, and 23 is the lower connector.

Implementation

The present invention will be further described below in conjunction with FIG. 1 , but the protection scope of the present invention is not limited to the content.

Wherein the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer "respectively refer to directions toward or away from the geometric center of a specific component, and the drawings are all in a very simplified form and use inaccurate ratios, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

For the sake of clarity, not all features of an actual embodiment are described. In the following description, well-known functions and constructions are not described in detail since they would obscure the invention with unnecessary detail and should be considered in the development of any actual embodiment. , a great deal of implementation detail must be worked out to achieve the developer's specific goals, such as changing from one embodiment to another in accordance with system-related or business-related constraints, and it should also be recognized that such development work may be complex and time-consuming Yes, but just routine work for those skilled in the art.

Embodiment 1: As shown in Figure 2 and Figure 3, the minimally invasive acetabular file for hip joint replacement includes a file head 1, a connecting part 2 and a manual handle 3, the upper part of the connecting part 2 is connected to the manual handle 3, and the upper part of the connecting part 2 is connected to the manual handle 3. The lower part is connected to the file head 1, and the connecting part 2 includes an upper connecting head 21, a connecting rod 22 and a lower connecting head 23. The connecting rod 22 is a 90° bent rod structure. The lower part is connected to the lower connector 23, the upper part of the upper connector 21 is provided with an upper rotating rod 4, the lower part of the lower connector 23 is provided with a lower rotating rod 5, and a detachable support is provided between the upper connector 21 and the lower connector 23 Rod 6, support rod 6 is stuck between upper connecting head 21 and lower connecting head 23, and the angle between the vertical part of connecting rod 22 and manual handle 3 is 40 °.

The upper rotating rod 4 is inserted into the manual handle 3, and the lower rotating rod 5 is inserted into the file head 1. The insertion and fixing method is threaded connection. The upper part of the upper rotating rod 4 is a threaded structure, which is connected to the manual handle 3 through threads. The lower part of the rod 5 is a threaded structure, which is threaded into the file head 1 .

The inside of the connecting rod 22 is a hollow structure, and the inside of the connecting rod 22 is provided with a transmission connection mechanism. The upper rotating rod 4 is connected with the lower rotating rod 5 through the transmission connecting mechanism inside the connecting rod 22, and the upper rotating rod 4 passes through the upper connecting head 21 and the transmission The connecting mechanism is connected, and the lower rotating rod 5 passes through the lower connecting head 23 and is connected with the transmission connecting mechanism, which makes the upper rotating rod 4 and the lower rotating rod 5 rotate simultaneously.

The state of use during the percussion operation is shown in Figure 4, the surgical wound B10 and the surgical wound C are cut, the file head 1 is inserted into the surgical wound B10 to the acetabulum, and then the support rod 6 is inserted into the surgical wound C and placed on the upper connection Between the head 21 and the lower connecting head 23, the whole supporting part 2 forms a stable triangle like this, and the bending structure of the connecting rod 22 will not cause the knocking to deviate when knocking.

Embodiment 2: As shown in Figure 5, the minimally invasive acetabular file for hip joint replacement includes a file head 1, a connecting part 2 and a manual handle 3, the upper part of the connecting part 2 is connected to the manual handle 3, and the lower part of the connecting part 2 is connected to the file The head 1 and the connecting part 2 include an upper connecting head 21, a connecting rod 22 and a lower connecting head 23. The connecting rod 22 is a 90° bent rod structure. Connector 23, the top of the upper connector 21 is provided with the upper turning rod 4, and the bottom of the lower connector 23 is provided with the lower turning rod 5, and the angle between the vertical part of the connecting rod 22 and the manual handle 3 is 40 °.

The upper rotating rod 4 is inserted into the manual handle 3, and the lower rotating rod 5 is inserted into the file head 1. The insertion and fixing method is threaded connection. The upper part of the upper rotating rod 4 is a threaded structure, which is connected to the manual handle 3 through threads. The lower part of the rod 5 is a threaded structure, which is threaded into the file head 1 .

The inside of the connecting rod 22 is a hollow structure, and the inside of the connecting rod 22 is provided with a transmission connection mechanism. The upper rotating rod 4 is connected with the lower rotating rod 5 through the transmission connecting mechanism inside the connecting rod 22, and the upper rotating rod 4 passes through the upper connecting head 21 and the transmission The connecting mechanism is connected, and the lower rotating rod 5 passes through the lower connecting head 23 and is connected with the transmission connecting mechanism, which makes the upper rotating rod 4 and the lower rotating rod 5 rotate simultaneously.

When performing file operation, the use state is shown in Figure 6, the incision is surgical wound B, and the file head 1 is inserted into the acetabulum, and the doctor can rotate the manual handle 3 through the upper rotating rod 4, the connection of the transmission connection mechanism, and the lower rotating rod 5 in sequence. The transmission effect makes the file head 1 rotate, which can realize minimally invasive installation and operation.

Embodiment 3: As shown in Figure 7, a length adjustment mechanism 7 is provided in the upper part of the support rod 6, the lower end of the upper connector 21 and the upper end of the lower connector 23 are provided with grooves 8, and the two ends of the support rod 6 are respectively inserted into the Corresponding groove 8.

When in use, cut the surgical wound B10 and surgical wound C, extend the file head 1 into the surgical wound B10 to the acetabulum, then extend the support rod 6 into the surgical wound C and insert it into the groove 8 of the lower connector 23 , and then adjust the length adjustment mechanism 7 so that the upper end of the support rod 6 is inserted into the groove 8 of the upper connector 21, so that the support rod is fixed between the upper connector 21 and the lower connector 23, so that the entire support part 2 forms A stable triangle is formed, and the bending structure of the connecting rod 22 will not cause the knocking to deviate when knocking.

Although the technical solutions of the present invention have been elaborated and listed in detail, it should be understood that for those skilled in the art, it is necessary for those skilled in the art to make modifications to the above-mentioned embodiments or adopt equivalent alternatives. Obviously, the modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the protection scope of the present invention.

Claims (9)

1. The utility model provides a hip joint is minimally invasive acetabular bone file for replacement, includes file head (1), connecting portion (2) and manual handle (3), the upper portion of connecting portion (2) is connected manual handle (3), file head (1) is connected to the lower part of connecting portion (2), a serial communication port, connecting portion (2) include connector (21), connecting rod (22) and lower connector (23), connecting rod (22) are 90 buckling rod structure, upper portion connection of connecting rod (22) connector (21), the lower part connection of connecting rod (22) connector (23) down, the upper portion of upper connector (21) is equipped with bull stick (4), the lower part of lower connector (23) is equipped with bull stick (5) down, go up bull stick (4) with bull stick (5) rotate simultaneously.

2. Minimally invasive acetabular file for hip replacement according to claim 1, characterized in that a detachable support bar (6) is arranged between the upper connector (21) and the lower connector (23).

3. Minimally invasive acetabular file for hip replacement according to claim 2, characterized in that the vertical portion of the connecting rod (22) is at an angle of 40 ° to the manual stem (3).

4. The minimally invasive acetabular file for hip joint replacement according to claim 1, wherein the connecting rod (22) is of a hollow structure, a transmission connecting mechanism is arranged inside the connecting rod (22), and the upper rotating rod (4) is connected with the lower rotating rod (5) through the transmission connecting mechanism inside the connecting rod (22).

5. The minimally invasive acetabular file for hip replacement according to claim 4, characterized in that the upper swivel rod (4) is connected to the transmission connection through the upper connector (21), and the lower swivel rod (5) is connected to the transmission connection through the lower connector (23).

6. Minimally invasive acetabular file for hip replacement according to claim 1, characterized in that the upper turning rod (4) is inserted into the manual shank (3) and the lower turning rod (5) is inserted into the file head (1).

7. The minimally invasive acetabular file for hip replacement according to claim 6, characterized in that the upper portion of the upper rotating rod (4) is threaded into the manual stem (3).

8. Minimally invasive acetabular file for hip replacement according to claim 6, characterized in that the lower part of the lower swivel rod (5) is of threaded construction, screwed into the file head (1).

9. The minimally invasive acetabular bone file for hip joint replacement according to claim 2, wherein a length adjusting mechanism (7) is arranged at the upper middle portion of the supporting rod (6), grooves (8) are formed in the lower end of the upper connector (21) and the upper end of the lower connector (23), and two ends of the supporting rod (6) are respectively inserted into the corresponding grooves (8).

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