WO2012108572A1

WO2012108572A1 - Method for manufacturing femoral stem and rasp for an artificial hip joint

Info

Publication number: WO2012108572A1
Application number: PCT/KR2011/000948
Authority: WO
Inventors: 선두훈; 김용식; 김정성; 신태진; 서정우
Original assignee: 주식회사 코렌텍
Priority date: 2011-02-11
Filing date: 2011-02-11
Publication date: 2012-08-16

Abstract

The present invention relates to a method for manufacturing a femoral stem and a rasp for an artificial hip joint. In the method for manufacturing the femoral stem and rasp for an artificial hip joint, the femoral stem and rasp for an artificial hip joint may be designed so that a body part, a neck part, and a head part are modularized. Thus, the body part of the rasp for an artificial hip joint is pre-manufactured, and then, the neck part and the head part are manufactured using a rapid prototyping process or a general machining process. Therefore, the time and cost for manufacturing the rasp may be reduced.

Description

Method of manufacturing artificial hip joint femoral stem and surgical instrument

The present invention relates to a method for manufacturing a hip joint femoral stem and a surgical instrument used therein. More specifically, the design of the artificial hip joint femoral stem and surgical instrument (rasp) is designed by modularizing the body part and the neck and the head part. The body part of the artificial hip joint rasp is manufactured in advance, and the neck and the head part are manufactured by rapid prototyping or general machining, so that the production period of the rasp The present invention relates to a method for manufacturing an artificial hip joint femoral stem and a surgical instrument, which can reduce the cost.

The hip joint is the joint between the femur and pelvis of the human body, and it is the joint that plays the most important role in sitting or standing, and can be damaged by various pathological causes and traumas. Artificial hip joint may be applied.

Typically, the hip joint is composed of the acetabular cup 300 is fixed to the acetabular pelvis 400 and the femoral stem 100 is fixed to the femur 200, as shown in Figure 1, femoral stem 100 and the acetabular cup 300 is made of, for example, a titanium alloy harmless to the human body. At the end of the femoral stem 100, the femoral head 500 formed of ceramic or metal material is fixed, and the corresponding hemisphere 600 is accommodated in the acetabular cup 300 to accommodate and rotate the femoral head 500. The corresponding hemispheres 600 are made of ceramic material or polymer polyethylene. The artificial hip joint configured as described above is configured to allow the femoral head 500 to rotate about the corresponding hemisphere 600 according to the movement of the femur 200 and the femoral stem 100.

Artificial hips can be broadly divided into pre-fabricated hips that are pre-fabricated according to certain specifications and custom-made hips that are manufactured to the individual characteristics of the patient for patients with femur shapes that are not suitable for the preformed hips. The most important part required for the hip joint is the horizontal distance (D1, head offset length) from the center of the femoral head associated with the position of the femoral head to the vertical center axis (Y) of the femur as shown in FIG. It is necessary to accurately correct the head longitudinal offset length (D2) from the center of the femoral head associated with the leg length and to supply the product as quickly as possible.

In addition, in the case of a conventional artificial hip joint, it is necessary to have all the instruments necessary for various procedures such as a drilling mechanism or various mechanisms necessary for expansion after drilling to treat the insertion space of the femoral stem of the custom artificial hip joint on the femur, and also There was a problem that it takes a lot of time and money to perform the procedure.

The present invention has been made to solve the above problems,

An object of the present invention is to design the hip joint femoral stem and surgical instrument (rasp) by modular design of the body portion and neck and head portion by artificially femoral hip joint that can accurately correct the position of the leg length and femoral head of the patient It is to provide a method for manufacturing a stem and a surgical instrument (rasp).

Another object of the present invention is to fit the characteristics of the patient during the body design of the various types of hip joint femoral stem and rasp for pre-standardization in the design of the body portion of the hip joint and the rasp By using the method of selecting the body design to provide a method for manufacturing the artificial femoral stem and rasp for the rapid reduction of the design and manufacturing period.

Another object of the present invention is the artificial hip joint (rasp) can be manufactured by modularizing the product itself into the body portion and neck and head portion artificial hip joint that can reduce the production period and cost of the surgical instrument (rasp) It is to provide a femoral stem and surgical instrument (rasp) manufacturing method.

Still another object of the present invention is to prepare the body portion of the rasp for artificial hips in advance, the neck and the head portion by rapid prototyping or general machining method (rasp) It is to provide a method for manufacturing artificial hip joint femoral stem and rasp that can reduce the production period and cost of the).

Artificial hip joint femoral stem and surgical instrument manufacturing method for achieving the above object of the present invention includes the following configuration.

According to an embodiment of the present invention, a method for manufacturing an artificial hip joint femoral stem according to the present invention includes a first step of extracting a design variable from femoral bone shape information of a patient; A second step of selecting a body design suitable for the characteristics of the patient from among the body designs of the femoral stem for various hip joints, which are standardized using the design variables extracted in the first step; And a third step of designing a neck and a head suitable for the body design selected in the second step by using the design variable extracted in the first step.

According to another embodiment of the present invention, in the method for manufacturing an artificial hip joint femoral stem according to the present invention, the design variable used in the second step is the width of the lumen of the patient's femur, and the design variable used in the third step is the femur It is characterized in that the horizontal length from the center of the head to the vertical axis of the femur and the vertical length from the center of the femur head to the small electrons.

According to another embodiment of the present invention, in the manufacturing method of the artificial hip joint femoral stem according to the present invention, the body design of the artificial hip joint femoral stem selected in the second step and the artificial hip joint femur designed in the third step A fourth step of designing the femoral stem for an artificial hip by integrating the neck and the head of the artificial hip; And a sixth step of processing the artificial hip joint femoral stem designed in the fourth step.

According to another embodiment of the present invention, in the manufacturing method of the artificial hip joint femoral stem according to the present invention a fifth step of evaluating the artificial hip joint designed in the fourth step in advance through finite element analysis; It is characterized in that it further comprises.

According to an embodiment of the present invention, a method for manufacturing an artificial hip surgical instrument (rasp) according to the present invention includes a first step of extracting a design variable from the femur shape information of the patient; A second step of selecting a body design suitable for a patient's characteristics among the body designs of the various types of hip arthroplasty rasps that are standardized using the design variables extracted in the first step; And a third step of designing a neck and a head suitable for the body design selected in the second step by using the design variable extracted in the first step.

According to another embodiment of the present invention, the design variable used in the second step in the method of manufacturing artificial hip surgical rasp according to the present invention is the width of the lumen of the patient's femur, and the design used in the third step The variable is characterized by the horizontal length from the center of the femur head to the vertical axis of the femur and the vertical length from the center of the femur head to the small electrons.

According to another embodiment of the present invention, in the manufacturing method of the artificial hip surgical instrument (rasp) according to the present invention the seventh processing according to the body design of the artificial surgical instrument (rasp) selected in the second step Step: The eighth step of processing the neck and head of the artificial hip surgical instrument (rasp) designed in the third step: characterized in that it further comprises.

According to another embodiment of the present invention, the seventh step in the manufacturing method of the artificial hip surgical rasp according to the present invention pre-processed the body of the standardized various types of artificial hip surgical rasp In addition, the eighth step is characterized by being able to shorten the manufacturing period of the rasp by processing the neck and the head by Rapid Prototyping or general machining.

The present invention can obtain the following effects by the configuration, combination, and use relationship described above with the present embodiment.

The present invention is designed by modularizing the design of the hip joint femoral stem and surgical instrument (rasp) into the body portion and neck and head portion, the artificial femoral stem for accurate correction of the position of the leg length and femoral head of the patient and Provides a method of making a rasp.

The present invention is to design the body design according to the characteristics of the patient during the body design of the various types of hip joint femoral stem and surgical instrument (rasp) of the pre-standardized in the design of the body portion of the hip joint and the surgical instrument (rasp) By using the selection method, the present invention provides a method for manufacturing an artificial hip femoral stem and a rasp that can shorten the design and manufacturing time.

The present invention is an artificial hip surgical instrument (rasp) is to be manufactured by modularizing the product itself into the body portion and neck and head portion, artificial femoral stem for artificial hip joint which can shorten the production period and cost of the surgical instrument (rasp) and Provides a method of making a rasp.

According to the present invention, the body portion of the rasp for artificial hips is manufactured in advance, and the neck and the head are manufactured by rapid prototyping or general machining, thereby producing a rasp. And it provides a method of manufacturing artificial hip joint femoral stem and ras (rasp) that can reduce the cost.

Figure 1 is a schematic diagram showing a state in which the artificial hip joint

Figure 2 is a schematic diagram showing a state in which the artificial hip joint femoral stem and surgical instrument (rasp) is performed on the femur

Figure 3 is a block diagram showing the process of the femoral stem manufacturing method for artificial hip joint according to an embodiment of the present invention

Figure 4 is a block diagram showing the process of manufacturing method of femoral stem for artificial hip according to another embodiment of the present invention

Figure 5 is a block diagram showing the process of a method for manufacturing a surgical instrument (rasp) for artificial hip joint according to an embodiment of the present invention

6 is a schematic diagram showing design variables extracted from femoral bone shape information of a patient

Figure 7 is a schematic diagram showing the process of designing the neck and head in the third step

8 is a schematic diagram showing a process of designing a femoral stem in a fourth step

Figure 9 is an isolated front view of the surgical instrument (rasp) for artificial hip joint according to an embodiment of the present invention

10 femur shape information photo

11 is the femoral stem body design database

12 is a design variable input photo

* Explanation of the main symbols used in the drawings

100: thigh stem 110: body 120: neck 130: head

111: proximal 113: distal

200: femur 210: microcephaly 220: bone lumen

300: Acetabular cup 400: Pelvis 500: Thigh head 600: Corresponding hemisphere

700: rasp 710: body 720: neck 730: head

711: engaging projection

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the artificial hip joint femoral stem and surgical instrument (rasp) manufacturing method according to the present invention will be described in detail.

Figure 3 is a block diagram showing the process of manufacturing method of femoral stem for artificial hip joint according to an embodiment of the present invention, Figure 6 is a schematic diagram showing the design parameters extracted from the femur shape information of the patient, Figure 7 is a third step Is a schematic representation of the process of designing the neck and head.

Referring to FIG. 3, a method for manufacturing a hip joint femoral stem according to an embodiment of the present invention includes a first step (S100) of extracting design parameters from femoral bone shape information of a patient; and the design parameters extracted in the first step. The second step (S200) of selecting a body design according to the characteristics of the patient of the body design of the various types of hip joint femoral stem pre-standardized using the; and using the design parameters extracted in the first step And a third step S300 of designing the neck portion and the head suitable for the body design selected in the second step.

The first step (S100) is to obtain the femur (200) shape information from the X-ray image information, etc. of the shape of the femur (200) of the patient in order to design the artificial hip femoral stem (100), and extracts the necessary design variables therefrom The process of doing.

The femoral 200 shape information of the patient may be obtained by using computer arithmetic processing and each image processing using the DICOM medical image information, which is an international medical imaging standard.

As can be seen in FIG. 10, the necessary design variables are extracted from the obtained femoral 200 shape information. As shown in FIG. 6, the intraluminal lumen 220 of the patient femur 200 is largely extracted. ), The horizontal length D1 from the center of the femoral head 500 to the vertical center axis Y of the femur 200 and the vertical length D2 from the center of the femoral head 500 to the small electrons 210. Among these, the width of the lumen 220 of the patient's femur 200 is specifically the width of the lumen in the upper 20 mm in the small electron 210 that can be obtained in the front shape of the femur 200 ( ①), width of bone lumen (②) at the small trochanter 210 in the vertical center axis (Y) of the femur (200), D3 at the small trochanter 210 (the proximal portion of the femoral stem at the small trochanter 210) The width of the lumen at the lower portion (③) by the length to the distal end, and as much as D4 (the length from the cerebellum 210 to the distal end of the femoral stem 113) at the cerebellum 210 Width (4) of the lumen of the bone in the lower part, width (5) of the lumen of the bone in the upper part 20 mm in the small electron 210 obtained from the lateral shape of the femur 200, and D3 in the small electron 210. (Width of bone lumen in the lower part (⑥) as much as (the length from the trochanter 210 to the proximal end 111 of the femoral stem), D4 in the trochanter 210 (the distal portion of the femoral stem in the trochanter 210) (113) the length to the end) means the width of the lumen (⑦) and the like in the lower portion. Extracting the necessary design variables from the femur 200 shape information is performed by a program, in which the pre-operation planning program may be used.

The second step (S200) is a body that fits the characteristics of the patient during the design of the body 110 of the femoral stem 100 for various types of hip joints, which is pre-standardized using the design variables extracted in the first step (S100). (110) means the process of selecting a design.

The core of the present invention is to design the modular body part 110 and the neck portion 120 and head 130 of the artificial femoral stem 100, respectively, the design of the dual body portion 110 is the patient Rather than designing the body portion 110 individually for each, as shown in Figure 11 based on the information about the existing hip joint body for the conventional hip joint, various types of pre-standardized hip joint femoral stem After preparing the design of the body 110 of the data 100, as shown in Figure 12, by inputting the design variables according to the shape of the femur of each patient, the design of the body 110 according to the characteristics of the patient of the most The method of selecting is used.

In this case, an auto-parametric design application of programming interface (API) or the like may be used, and the design variable used at this time may be a bone lumen of the patient's femur 200 among the design variables extracted in the first step S100. The width of the 220 and the length (②) of the femur 200 from the vertical center axis (Y) to the microelectrode 210, where the width of the lumen 220 of the patient's femur 200 is the femur as described above. Width of bone lumen (①) at 20 mm upper part in small cell 210 obtained from the frontal shape of (200), D3 in small cell 210 (proximal part of femoral stem in small cell 210) 1) the width of the lumen at the lower portion (③) by the length to the distal end), D4 in the small electrons 210 (distal portion of the femoral stem in the small electrons 210) is shown in 113- FIG. Width of the bone lumen at the lower portion ④ by the length to the distal end) and the small electrons 210 obtained from the lateral shape of the femur 200 Width of bone lumen (⑤) in the upper 20 mm, the width of the lumen in the lower portion by the small electrons 210 to D3 (the length from the small electrons 210 to the proximal end 111 of the femoral stem) ⑥), means the width of the bone lumen (⑦) in the lower portion as much as D4 (the length from the small electrons 210 to the distal portion 113 end of the femoral stem) in the small electrons 210.

In addition to the method of selecting the design of the body 110 according to the characteristics of the patient as well as inputting the design variables as described above, in the design program using a mouse of the various types of artificial hip joint 100 of the pre-standardized By dragging the design of the body 110 directly onto the shape of the femur 200 of the patient, a method of selecting the design of the body 110 according to the characteristics of the patient may also be utilized.

In the case of designing the body 110 of the femoral stem 100 by selecting a body 110 design suitable for the patient's characteristics in various pre-standardized body 110 designs as described above, Fast design for the femoral stem 100 can be used as well as the existing surgical tools can be used to achieve the effect of reducing the cost.

The third step (S300) uses the design variables extracted in the first step (S100) to the neck portion 120 and the head 130 suitable for the design of the body 110 selected in the second step (S200). The process of designing.

The present invention is to solve the problem that the correction of the position of the femoral ball head and the leg length of the patient according to the design of the body 110 and the neck 120 and the head 130 of the femoral stem 100 at a time is not accurate In order to design each modular, the double neck 120 and the head 130 is designed based on the design of the body 110 selected in the second step (S200) as shown in FIG. Fit the body 110 to the femur of the patient first, and then input the design variables extracted in the first step (S100) based on this to design the neck (120) and head 130 according to the characteristics of the patient do.

In this case, an auto-parametric design application of programming interface (API) or the like may be used, and the design variable used at this time may be located at the center of the femoral head 500 among the design variables extracted in the first step S100. The horizontal length D1 to the vertical center axis Y of the femur 200 and the vertical length D2 from the center of the femoral head 500 to the small electrons 210, which are the position and leg of the patient's femur head. The length means a head offset length and a head transverse offset length.

As described above, after fitting the body 110 to the femur of the patient based on the design of the body 110 selected in the second step S200, the design variables extracted in the first step S100 based on the design. In the case of designing the neck 120 and the head 130 according to the characteristics of the patient, it is possible to quickly and accurately correct the position of the patient's femoral head and the patient's leg length by using It is possible to provide a femoral stem for the hip joint, which can reduce the cost and time loss and pain of the patient due to remanufacture or re-treatment.

Figure 4 is a block diagram showing the process of the method for manufacturing a hip joint femoral stem according to another embodiment of the present invention, Figure 8 is a schematic diagram showing a process of designing the femoral stem in the fourth step.

Referring to Figure 4, the artificial hip joint femoral stem manufacturing method according to another embodiment of the present invention is designed in the third step (S200) the body design of the hip joint femoral stem and the third step (S300) The fourth step (S400) of designing the hip joint femoral stem by integrating the neck and head of the artificial femoral stem; and the hip joint femur stem designed in the fourth step (S400) through finite element analysis. The fifth step (S500) to evaluate in; and the sixth step (S600) for processing the femoral stem for artificial hip designed in the fourth step (S400); characterized in that it further comprises.

The fourth step (S400) is the design of the body 110 of the hip joint femoral stem selected in the second step (S200) and the neck portion 120 of the femoral stem for artificial hips designed in the third step (S300) Means the process of designing the hip joint femoral stem 100 by integrating the head 130.

As shown in FIG. 8, the design of the body 110 of the femoral stem for the hip joint selected in the second step (S200) on the design program and the neck portion 120 of the femoral stem for the hip joint designed in the third step (S300) Design variables extracted in the first step (S100) by constructing an automatic design system that can complete the overall design for the hip joint femoral stem 100 by a simple operation of combining the design and the head (130) By using only it is possible to quickly and accurately design the hip joint femoral stem to suit the individual patient's characteristics. In this case, an auto-parametric design API (Application of Programming Interface) may be used as the program.

The fifth step (S500) means a process of evaluating the artificial hip joint femoral stem 100 designed in the fourth step (S400) in advance through finite element analysis.

This is whether the hip joint femoral stem 100 designed in the fourth step (S400) has a range of motion (ROM, Range Of Motion) that does not interfere in daily life, and has strength to withstand the load of the patient. By preliminary evaluation through finite element analysis at the design stage, the product defect rate can be lowered to reduce the cost, time loss, and patient pain of remanufacturing or re-treatment. At this time, as the finite element analysis program used, COSMOS Works, which is a general purpose finite element analysis program, can be used.

The sixth step S600 refers to a process of processing the artificial hip joint femoral stem 100 designed in the fourth step S400.

Looking at the specific machining process, first the cam (CAM) work to proceed to the free shape on the automated machine for processing based on the design of the artificial hip joint femur 100 designed in the fourth step (S400) The femoral stem for artificial hip joint is processed using 5-axis M / CTR and CNC Lathe based on the CAM work.

When the femoral stem 100 for artificial hip is processed through the above steps, the product is supplied through the ninth step S900 of post-treatment, and the dimensions of the processed product in the ninth step S900. And inspection process for measuring the shape to check whether it is within the error range, cleaning process for surface treatment and cleaning for the finished product, sterilization and packaging process for final sterilization of the finished product through gamma sterilization and packaging. Will be.

Looking again at the overall flow of the design and processing process of the hip joint femoral stem according to the present invention, first input the patient's medical image information into the design parameter extraction program for information on the shape of the femur according to the individual characteristics of the patient If the extracted design variables are inputted into the design program, the optimal femoral stem body design is selected according to the individual femoral characteristics of the patient among the various femoral stem body designs already stored in the database. If the design variables extracted on the basis of the selected femoral stem body are input into the design program, the neck and head of the femoral stem according to the individual characteristics of the patient are automatically designed, and the femoral stem body design and thigh Integrating the stem neck and head design to the patient's individual femur The design of the hip joint femoral stem according to the characteristics is completed.

After the design of the hip joint femoral stem is completed, the motion range or strength of the femoral stem is evaluated in advance using a finite element analysis program, and then 5 axis M / CTR and CNC lathe are used. By processing the femoral stem for artificial hips, and after processing through the post-treatment process, such as inspection, washing, sterilization, the final product can be used.

FIG. 5 is a block diagram illustrating a process of a method for manufacturing an artificial hip surgical instrument (rasp) according to an embodiment of the present invention, and FIG. 9 illustrates separation of an artificial hip surgical instrument (rasp) according to an embodiment of the present invention. Front view.

Referring to FIG. 5, a method for manufacturing an artificial hip surgical instrument (rasp) according to an embodiment of the present invention includes a first step (S100) of extracting design parameters from femoral shape information of a patient; and extracting from the first step. A second step (S200) of selecting a body design suitable for a patient's characteristics among the body designs of various types of hip joint surgical instruments (rasps) pre-standardized using the designed design variables; and the design extracted in the first step A third step (S300) of designing the neck and the head according to the body design selected in the second step using the variable; and the body design of the rasp for the artificial hip selected in the second step (S200). Process according to the seventh step (S700): and the eighth step (S800) for processing the neck and head of the artificial hip surgical instrument (rasp) designed in the third step (S300): characterized in that it comprises a .

Since the first step (S100), the second step (S200), and the third step (S300) are the same as those described in the method for manufacturing the femoral stem for artificial hip joint, duplicate description thereof will be omitted. The seventh step (S700) and the eighth step (S800) will be mainly described.

The seventh step (S700) is to process the body 710 of the surgical instrument (rasp, 700) according to the design of the body 710 of the artificial surgical instrument (rasp, 700) selected in the second step (S200). The process of doing.

This is one of the key features of the present invention, in the case of the existing custom-made hip joint, as well as the treatment apparatus (rasp, 700) for the treatment of the femoral stem 100 for the individual characteristics of the patient to be manufactured separately and also the surgical instrument (rasp, Since the production of 700 is integrated, there is a problem of increased production period and cost, and thus, not only the design of a surgical instrument (rasp, 700) for the treatment of the hip joint femoral stem 100 to solve this problem, The product is manufactured to be modularized into the body 710 and the neck portion 720 and the head 730 to reduce the production period and cost required for the production of the surgical instrument (rasp, 700), of which The seventh step (S700) is stainless steel to the body 710 of the surgical instrument (rasp, 700) according to the design of the body 710 of the artificial surgical instrument (rasp, 700) selected in the second step (S200) (stainles It can be processed by general machining method using s steel) material. In this case, a coupling protrusion 711 may be formed on the upper portion of the body 710 of the surgical instrument (rasp, 700) in the future for coupling the neck portion 720 and the head 730 portion.

In addition, the body 710 of the surgical instrument (rasp, 700) to be processed in the seventh step (S700) in order to shorten the production period required for the production of the surgical instrument (rasp, 700) for the standardized artificial hip joint It can be used after processing in advance for each of the body 710 of the surgical instrument (rasp, 700). The production period required for the production of the body 710 can be shortened, and recycling may be possible.

The eighth step (S800) is the neck portion of the surgical instrument (rasp, 700) according to the design of the neck 720 and the head 730 of the artificial surgical instrument (rasp, 700) designed in the third step (S300) 720 and the process of processing the head 730.

This is one of the key features of the present invention, in the case of the existing custom-made hip joint, as well as the treatment apparatus (rasp, 700) for the treatment of the femoral stem 100 for the individual characteristics of the patient to be manufactured separately and also the surgical instrument (rasp, Since the production of 700 is integrated, there is a problem of increased production period and cost, and thus, not only the design of a surgical instrument (rasp, 700) for the treatment of the hip joint femoral stem 100 to solve this problem, The product is manufactured to be modularized into the body 710 and the neck portion 720 and the head 730 to reduce the production period and cost required for the production of the surgical instrument (rasp, 700), of which Eighth step (S800) is the neck portion 720 of the surgical instrument (rasp, 700) according to the design of the neck portion 720 and the head 730 of the artificial surgical instrument (rasp, 700) designed in the third step (S300) ) And head (730) Typical machining process machining (machining), or it may be processed by the particular rapid prototyping techniques (Rapid Prototyping) using the poly (poly) series of materials not harmful to human body. At this time, the lower portion of the neck portion 720 of the surgical instrument (rasp, 700) may be formed with a coupling groove (not shown) for coupling with the body 710 in the future.

Rapid Prototyping is a processing technique that shortens the product development period and enables complex geometric shapes to be formed. The rapid prototyping is used to process the neck portion 720 and the head 730 of the surgical instrument (rasp, 700). If only one day does not take the production period, and also can be manufactured in a separate equipment from the equipment for manufacturing the artificial hip femoral stem 100, it is possible to avoid the production interference between each other.

After the body 710 and the neck portion 720 and the head 730 of the artificial hip surgical instrument (rasp, 700) by modularizing and processing, respectively, the body 710 as shown in FIG. The final combination of the hip and surgical instrument (rasp, 700) by combining the portion and the neck portion 720 and the head 730, the product in the case of manufacturing the artificial surgical instrument (rasp, 700) in this way As the module is processed by itself, it is possible to reduce the time and cost required to manufacture the surgical instrument (rasp, 700) and to increase the recycling rate. When the body 710 and the neck 720 and the head 730 of the artificial surgical instrument (rasp, 700) are processed, respectively, the product is supplied through a ninth step (S900) of post-treatment. Since the ninth step (S900) is the same as described above in the method for manufacturing the artificial femoral stem, the duplicate description thereof will be omitted.

In the above, the Applicant has described preferred embodiments of the present invention, but these embodiments are merely one embodiment for implementing the technical idea of the present invention, and any changes or modifications may be made as long as the technical idea of the present invention is implemented. Should be interpreted as being within the scope.

Claims

Extracting a design variable from femoral shape information of the patient;

A second step of selecting a body design suitable for the characteristics of the patient from among the body designs of the femoral stem for various hip joints, which are standardized using the design variables extracted in the first step;

And a third step of designing the neck and the head suitable for the body design selected in the second step by using the design variables extracted in the first step.
The method of claim 1,

The design variable used in the second step is the width of the lumen of the patient's femur,

The design variable used in the third step is a horizontal length from the center of the femoral head to the vertical central axis of the femur and the vertical length from the center of the femur head to the small electrons.
The method of claim 1, wherein the artificial femoral stem manufacturing method

A fourth step of designing a hip joint femoral stem by integrating the body design of the hip joint femoral stem selected in the second step and the neck and the head of the hip joint femur designed in the third step;

And a sixth step of processing the artificial hip joint femoral stem designed in the fourth step.
According to claim 3, The method for manufacturing the artificial hip femoral stem

And a fifth step of evaluating the artificial femoral stem for hip joint designed in the fourth step in advance through finite element analysis.
Extracting a design variable from femoral shape information of the patient;

A second step of selecting a body design suitable for a patient's characteristics among the body designs of the various types of hip arthroplasty rasps that are standardized using the design variables extracted in the first step;

A third step of designing a neck and a head suitable for the body design selected in the second step by using the design variables extracted in the first step; and a rasp manufacturing method for a hip joint, comprising: .
The method of claim 5,

The design variable used in the second step is the width of the lumen of the patient's femur,

The design variable used in the third step is a horizontal length from the center of the femur head to the vertical axis of the femur and the vertical length from the center of the femur head to the small electrons (rasp) manufacturing method (rasp) manufacturing method .
The method of claim 5, wherein the method for manufacturing an artificial hip surgical rasp

The seventh step of processing according to the body design of the rasp for artificial hip selected in the second step:

Eighth step of processing the neck and head of the artificial hip surgical instrument (rasp) designed in the third step: Method of manufacturing an artificial hip surgical instrument (rasp) further comprising.
The method of claim 7, wherein

The seventh step is to pre-process the body of the standardized various types of artificial surgical instrument (rasp),

The eighth step is to process the neck and the head by rapid prototyping or general machining (machining),

Surgical instrument (rasp) manufacturing method of the artificial surgical instrument (rasp) characterized in that it can shorten the production period.