CN105011984A - Hip femoral resection instrumentation system - Google Patents

Abstract

The invention discloses a hip joint femoral resection instrument system which is used for resecting a femoral bone and comprises a first module, wherein the first module is integrally formed and is provided with an inner surface, an outer surface, an upper part and a lower part, the upper part is provided with a horizontal through groove and a positioning groove, the horizontal through groove penetrates through the inner surface and the outer surface and extends towards a nail direction to define a nail cutter angle with a nail cutter, the positioning groove is formed at an end surface of the upper part and is formed by inwards sinking from the end surface, the lower part is provided with a plurality of fixing through holes, and the fixing through holes penetrate through the inner surface and the outer surface to be penetrated by a plurality of fixing elements so that the first module is fixed on the surface of the femoral bone of a hip joint. Through the positioning groove, the second module and the third module can be accurately and fixedly arranged on the first cutting surface, so that a better cut-off finished product can be obtained.

Description

Hip femoral resection instrumentation system

technical field

The present invention relates to a hip femoral resection device system, and in particular, to a hip femoral resection device system adapted for customized resection due to the shape of the patient's bone.

Background technique

The hip joint is the most important joint when the human body stands or moves. It mainly supports the weight of the person and can perform multi-directional activities such as squatting, running, jumping, kneeling, abduction, bending forward or extending backward. However, after a long period of support and use, the hip joint becomes a joint that is prone to degeneration.

However, in addition to degenerative hip arthritis caused by aging, avascular necrosis of the femoral head caused by rheumatoid arthritis caused by immune dysfunction, trauma, or poor blood circulation of the femoral head can also cause hip osteoarthritis. Damage to joints. For the treatment of severe hip joint diseases, common artificial hip replacement surgery is currently the most mainstream method. When a patient suffers from hip pain and inconvenient mobility for a long time, after hip replacement surgery, most of the joint function has been greatly improved, and the previous pain symptoms will gradually disappear, muscle strength increases, and the degree of lameness will also be improved.

Please refer to Chinese Taiwan Patent No. I401060, which discloses a femoral head replacement module and its surgical tool. The surgical tool includes a cutting die set and a die knife. The cutting die set is hollow and has a The shell with the same shape on the surface can be easily and tightly fit on the side of the femoral neck, so that a mold knife can be used to cut the end of the femoral head to be replaced into a preset anatomical section shape, and it is easy to remove after the operation , a guide tube is provided on the top side of the cutting die set for drilling a central hole for the femoral head, and a transverse groove is arranged horizontally in the middle of the cutting die set, which can be used as a precise guide for resecting the femoral head; and the femoral head The bone replacement module at least includes a cover and an artificial femoral head. The base of the cover is assisted by a three-dimensional scanning instrument so that its base end is shaped to have the same surface shape as the lower part of the femoral neck. The same or similar anatomical section of the replacement end of the femoral head enables the cover body of the artificial femoral head to be combined with the replacement end of the femoral head in a precise and stable state.

However, after such resection is completed, the mask still needs to be assisted by a three-dimensional scanning instrument to shape the shape of the base end to have the same size and thickness as the surface shape of the lower part of the femoral neck, which is inconvenient and therefore needs improvement. part.

Contents of the invention

In order to solve the parts that need to be improved in the prior art, the object of the present invention is to provide a hip femoral resection instrument system for resecting the femur, which includes a first module, a second module, a third module, a A fourth module and a fifth module.

The first module is one piece formed, with an inner surface, an outer surface, an upper part and a lower part. The inner surface is designed according to the curvature of the bone surface. The upper part has a horizontal groove and a positioning groove, and the horizontal groove penetrates Penetrating the inner surface and the outer surface and extending toward the direction of the first nail to define the first nail entry angle of the first nail cutter. The positioning groove is formed on an end surface of the upper part and is recessed from the end surface inward, and the lower part has a plurality of fixed through holes. A plurality of fixation perforations penetrate the inner surface and the outer surface, wherein, in application, the plurality of fixation elements pass through the plurality of fixation perforations to fix the first module on the surface of the femur, and the horizontal perforations are adapted to correspond to the femoral neck of the femur For penetration of the nail cutter to resect the femoral neck and create a first cutting surface on the femur.

The second module is formed in one piece (one piece formed), has an inner surface, an outer surface, a fixing part and a receiving part, the shape of the fixing part corresponds to the positioning groove, and is suitable for being fixed with the positioning groove. The accommodating part is connected with the fixed part, and the accommodating part further has a hollow part, and the hollow part penetrates the inner surface and the outer surface. In addition, there is a curved profile outside the accommodating part, which is the same as the outer profile of the first cutting and milling surface on the bone, so as to confirm whether the first cutting and milling surface is accurate.

The third module has an inner surface and an outer surface, and the shape of the third module corresponds to the hollow part of the second module, the third module is suitable for being embedded in the hollow part, the third module has at least two through holes, at least two through holes Penetrate the inner surface and the outer surface and are respectively suitable for the fixing element to pass through.

Wherein, in application, the third module is embedded in the second module, and the accommodating part of the second module and the third module are simultaneously arranged on the first cutting and milling surface and are coplanar, and then at least two through holes are used to define multiple Multiple predetermined positions of a fixed element, this coplanarity can reconfirm whether the first cutting surface is flat or not.

The fourth module is integrally formed (one piece formed), has an inner surface, an outer surface, a positioning part and a plurality of vertical through grooves, wherein the positioning part has at least two perforations, and at least two perforations penetrate the inner surface and the outer surface The surface is suitable for a plurality of fixing elements to pass through, and a plurality of vertical through-grooves penetrate the inner surface and the outer surface and extend toward a B direction, and a plurality of vertical through-grooves are respectively suitable for defining a B entry angle for a B tool .

Wherein, when at least two perforations of the third module have been fixed with a plurality of fixation elements and the second module has been removed from the femur, the fourth module has to be sleeved with a plurality of fixation elements through at least two perforations, whereby the plurality of The second tool performs vertical cutting on the first milling surface and produces a second milling surface through a plurality of vertical grooves.

The fifth module includes a grinding device adapted to perform a detail modification on the first milling surface and the second milling surface after the second milling surface is produced.

It is worth noting that the fixing element can be a bone nail, a bone needle, or other elements with the same effect; the surfaces of the fixing part and the accommodating part of the second module are parallel to each other, and the surfaces of the fixing part and the accommodating part There is a height difference; the length extension directions of the multiple vertical slots of the fourth module can exist in a parallel manner, or have an included angle, wherein, the included angle can be an acute angle, and at least two through holes are arranged on multiple vertical slots. between slots.

The beneficial effect of the present invention is that, compared with the prior art, the hip femoral resection device system of the present invention provides a positioning groove, which is formed at one end surface of the upper part and is formed by inward depression from the end surface for the second The module and the third module can be more stably and accurately fixed on the first cutting surface to facilitate the subsequent femur resection. At the same time, through the use of the third module, we can pre-make the required contour of the mask , In this way, when the resection is completed, there is no need to use a stereoscopic scanning instrument to shape the shape of the base end to have the same size and thickness as the surface shape of the lower part of the femoral neck to increase its convenience.

Description of drawings

FIG. 1A is a schematic perspective view of a first module in a preferred embodiment of the hip femoral resection device system of the present invention.

FIG. 1B is a schematic side view of the first module in a preferred embodiment of the hip femoral resection device system of the present invention.

FIG. 1C is a schematic front view of the first module in a preferred embodiment of the hip femoral resection device system of the present invention.

FIG. 2A is a schematic view from above of the second module and the third module in a preferred embodiment of the hip joint femoral resection device system of the present invention.

FIG. 2B is a schematic bottom perspective view of the second module and the third module in a preferred embodiment of the hip femoral resection device system of the present invention.

FIG. 3A is a schematic view from above of the fourth module in a preferred embodiment of the hip joint femoral resection device system of the present invention.

FIG. 3B is a schematic bottom perspective view of the fourth module in a preferred embodiment of the hip femoral resection device system of the present invention.

FIG. 4 is a schematic view showing the usage of the first module in a preferred embodiment of the hip joint femoral resection device system of the present invention.

FIG. 5 is a schematic diagram showing the completion of resection of the first module in a preferred embodiment of the hip joint femur resection instrument system of the present invention.

FIG. 6 is a schematic view showing the completion of installation of the second module and the third module in a preferred embodiment of the hip femoral resection device system of the present invention.

FIG. 7 is a schematic view showing the installation completion of the third module in a preferred embodiment of the hip joint femoral resection device system of the present invention.

FIG. 8 is a schematic view showing the use of the fourth module in a preferred embodiment of the hip femur resection device system of the present invention.

FIG. 9 is a schematic diagram showing the completion of resection of the fourth module in a preferred embodiment of the hip joint femur resection instrument system of the present invention.

FIG. 10 is a schematic diagram showing the completion of resection of the fifth module in a preferred embodiment of the hip joint femur resection instrument system of the present invention.

FIG. 11 is a schematic diagram of a femur that has been completely resected in a preferred embodiment of the hip joint femoral resection instrument system of the present invention.

Wherein, the reference signs are explained as follows:

1: Hip femur resection instrument system 3: Femur

5: Armor tool 7: Fixed element

9: Tool B 10: Module 1

12: The inner surface of the first module 14: The outer surface of the first module

16: Upper part 162: Horizontal slotting

164: positioning slot 18: lower part

182: fixed perforation 20: second module

22: The inner surface of the second module 24: The outer surface of the second module

26: Fixed part 28: Accommodating part

282: Hollow part 30: The third module

32: The inner surface of the third module 34: The outer surface of the third module

36: Perforation 40: The fourth module

42: The inner surface of the fourth module 44: The outer surface of the fourth module

46: Alignment part 462: Perforation

48: Vertical slotting 50: Fifth module

S1: The first cutting and milling surface S2: The second cutting and milling surface

Detailed ways

The hip femoral resection instrument system proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and claims.

Firstly, a detailed description will be given for each module in the hip femur resection instrument system provided by the present invention.

The object of the present invention is to provide a hip joint femoral resection instrument system for resecting the femur, which includes a first module 10, a second module 20, a third module 30, a fourth module 40 and a Fifth module 50 .

Please refer to FIG. 1A, FIG. 1B and FIG. 1C together, wherein FIG. 1A shows a perspective view of the first module in a preferred embodiment of the hip joint femoral resection device system of the present invention, and FIG. 1B shows a schematic view of the first module of the present invention. A schematic side view of the first module in the hip joint femur resection device system in a preferred embodiment, Fig. 1C shows the main body of the first module in the hip joint femur resection device system in a preferred embodiment of the present invention View schematic diagram. The first module 10 is integrally formed (one piece formed), which means that it is processed from a single material, and has an inner surface 12, an outer surface 14, an upper part 16 and a lower part 18. The curvature of the inner surface 12 is based on bone The surface curvature is designed so that it can be more firmly erected on the bone. The upper part 16 has a horizontal through groove 162 and a positioning groove 164. The horizontal through groove 162 penetrates the inner surface 12 and the outer surface 14 and extends toward the first direction to define a first entry angle of the first cutter 5. The positioning groove 164 forms It is formed at one end surface of the upper part 16 and is recessed inward from the end surface, and the lower part 18 has a plurality of fixing through holes 182, and a plurality of fixing through holes 182 penetrate the inner surface 12 and the outer surface 14, wherein, in application, a plurality of fixing through holes 182 penetrate the inner surface 12 and the outer surface 14. The component 7 fixes the first module 10 on the surface of the femur 3 through a plurality of fixing holes 182. The inner surface 12 is designed according to the curvature of the bone surface, which can be more stably erected on the femur 3, and the horizontal through groove 162 is suitable for corresponding to the femur 3 The neck of the femur is penetrated by the nail cutter 5 to cut the neck of the femur and produce a first cutting surface S1 on the femur 3 .

Please refer to FIG. 2A and FIG. 2B together, wherein FIG. 2A shows a schematic diagram of the upper perspective of the second module and the third module in a preferred embodiment of the hip femur resection device system of the present invention, and FIG. 2B shows the present invention. Schematic diagram of the second module and the third module in a preferred embodiment of the inventive hip femoral resection instrument system from the lower perspective. The second module 20 is also integrally formed (one piece formed), has an inner surface 22, an outer surface 24, a fixing portion 26 and an accommodating portion 28, the shape of the fixing portion 26 corresponds to the positioning groove 164, and is suitable for The accommodating portion 28 is connected to the fixing portion 26 . The accommodating portion 28 further has a hollow portion 282 penetrating through the inner surface 22 and the outer surface 24 . The third module 30 has an inner surface 32 and an outer surface 34, and the shape of the third module 30 corresponds to the hollow portion 282 of the second module 20, the third module 30 is suitable for being embedded in the hollow portion 282, the third module 30 has at least two through holes 36 , and at least two through holes 36 penetrate through the inner surface 32 and the outer surface 34 and are respectively suitable for the fixing element 7 to pass through. Wherein, in application, the third module 30 is embedded in the second module 20, the accommodating portion 28 of the second module 20 and the third module 30 are simultaneously arranged on the first cutting surface S1 and are coplanar, and then passed At least two through holes 36 define a plurality of predetermined positions of the fixing elements 7 .

Please refer to FIG. 3A and FIG. 3B together, wherein FIG. 3A shows a schematic view from above of the fourth module in a preferred embodiment of the hip joint femoral resection device system of the present invention, and FIG. 3B shows the hip joint of the present invention Schematic view of the fourth module in a preferred embodiment of the femoral resection instrument system from the lower perspective. The fourth module 40 is also integrally formed (one piece formed), has an inner surface 42, an outer surface 44, a positioning portion 46 and a plurality of vertical slots 48, wherein the positioning portion 46 has at least two through holes 462, at least Two perforations 462 penetrate the inner surface 42 and the outer surface 44 and are suitable for a plurality of fixing elements 7 to pass through, and a plurality of vertical through grooves 48 penetrate the inner surface 42 and the outer surface 44 and extend toward a direction B, a plurality of The vertical slots 48 are respectively adapted to define a second entry angle for a second knife 9 . Wherein, when at least two through holes 36 of the third module 30 have been fixed with a plurality of fixation elements 7 and the second module 20 has been removed from the femur 3, the fourth module 40 has to be sleeved with a plurality of fixation elements 7 through at least two through holes 462. The element 7, whereby a plurality of second knives 9 can vertically cut the first milling surface S1 and produce a second milling surface S2 through the plurality of vertical grooves 48 .

Wherein, there is also a fifth module 50 including a grinding device, suitable for performing a detail trimming on the first milling surface S1 and the second milling surface S2 after the second milling surface S2 is generated.

It is worth noting that, in a preferred embodiment of the present invention, the fixing element 7 can be a bone nail, a bone needle, or other elements with the same effect; the fixing portion 26 and the receiving portion of the second module 20 The surfaces of 28 are parallel to each other, and the surfaces of the fixed part 26 and the accommodating part 28 have a height difference; the length extension direction of a plurality of vertical through grooves 48 of the fourth module 40 has an included angle, wherein the included angle is an acute angle (not shown) is shown in the figure), and at least two through holes 462 are disposed between the plurality of vertical through grooves 48 .

Next, the usage steps of a preferred embodiment of a hip femoral resection instrument system provided by the present invention will be described.

Please refer to FIG. 4 . FIG. 4 shows a schematic view of the use of the first module in a preferred embodiment of the hip femoral resection device system of the present invention. In a preferred embodiment, the first step of using the present invention is that when the first module 10 is intended to be used, it is necessary to first confirm the reference plane to be cut off, and then make the first module 10 through a plurality of fixed through holes 182 in its lower part 18. The module 10 is precisely fixed on the surface of the femur 3 , and then the nail cutter 5 is passed through the horizontal through groove 162 , and the femur 3 is cut along the horizontal through groove 162 .

Please refer to FIG. 5 . FIG. 5 is a schematic diagram showing the completion of resection of the first module in a preferred embodiment of the hip femur resection device system of the present invention. After completing the steps described in the previous paragraph, the resection of the femur 3 in the first block 10 is completed as shown in the figure. It is worth noting that after this step is completed, a first cutting surface S1 will be produced, so that The following steps are carried out.

Please refer to FIG. 6 . FIG. 6 is a schematic view showing the installation of the second module and the third module in a preferred embodiment of the hip joint femoral resection device system of the present invention. In this step, after the first cutting surface S1 is generated, the nail cutter 5 is removed, and the second module 20 and the third module 30 are fixed to the first module 10 through the fixing portion 26 of the second module 20, to check the first milling surface S1. After the inspection is completed, at least two through holes 36 are penetrated by a plurality of fixing elements 7 so that the third module 30 can be fixed on the first cutting surface S1.

Please refer to FIG. 7 . FIG. 7 is a schematic view showing the installation of the third module in a preferred embodiment of the hip joint femoral resection device system of the present invention. After the steps described in the previous paragraph are completed, the first module 10 and the second module 20 are disassembled. The second module 20 and the third module 30 are originally connected to each other, and the bond between the two must be removed first. It can be separated, leaving only the third module 30 fixed on the first cutting surface S1 by using at least two through holes 36 and the fixing element 7 .

Please refer to FIG. 8 . FIG. 8 is a schematic view showing the usage of the fourth module in a preferred embodiment of the hip femoral resection device system of the present invention. After the steps described in the previous paragraph are completed, the fourth module 40 is sleeved on the fixing element 7 through at least two perforations 462, so that the fourth module 40 can be fixed, and then the second knife 9 penetrates a plurality of vertical slots 48 Cutting the first milling surface S1 facilitates the following steps.

Please refer to FIG. 9 . FIG. 9 is a schematic view showing the completion of resection of the fourth module in a preferred embodiment of the hip femur resection instrument system of the present invention. After completing the steps described in the previous paragraph, the fourth module 40 and the second cutter 9 are removed, as shown in the figure, wherein, it is worth noting that a second cutting and milling surface S2 is produced at this time, so that the femur 3 The overall cross-sectional area is reduced a lot, which is conducive to the following steps.

Please refer to FIG. 10 . FIG. 10 is a schematic diagram showing the completion of resection of the fifth module in a preferred embodiment of the hip femur resection instrument system of the present invention. After the second cutting and milling surface S2 is produced in the above-mentioned steps, the first cutting and milling surface S1 and the second cutting and milling surface S2 are detailed along the contour of the third module 30 by using the grinding device of the fifth module 50. processing.

Please refer to FIG. 11 . FIG. 11 is a schematic diagram of a femur after the whole resection of the hip joint femoral resection instrument system in a preferred embodiment of the present invention. After the above-mentioned steps are completed, the third module 30 and the fixing element 7 are removed, that is, the step of resection of the femur 3 is completed, and the femur 3 after resection is as shown in the figure.

In summary, compared with the prior art, a hip femoral resection device system of the present invention provides a positioning groove, which is formed at an end surface of the upper part and is recessed inward from the end surface for the second The module and the third module can be more stably and accurately fixed on the first cutting surface to facilitate the subsequent femur resection. At the same time, through the use of the third module, we can pre-make the required contour of the mask , In this way, when the resection is completed, there is no need to use a stereoscopic scanning instrument to shape the shape of the base end to have the same size and thickness as the surface shape of the lower part of the femoral neck to increase its convenience.

Through the detailed description of the preferred specific embodiments above, it is hoped that the features and spirit of the present invention can be described more clearly, rather than the scope of the present invention is limited by the preferred specific embodiments disclosed above. On the contrary, the intention is to cover various changes and equivalent arrangements within the scope of the claimed patent scope of the present invention. Therefore, the scope of the scope of the patent application for the present invention should be interpreted in the broadest way based on the above description, so as to cover all possible changes and arrangements with equivalents.

Claims (9)

1. a femoral hip prosthesis excision appliance system, for excising a femur, it includes:

One first module, has an inner surface and an outer surface, and this first module is formed in one, and has:

One top, this top has a level and wears groove and a locating slot, this level is worn groove and is penetrated this inner surface and this outer surface and have a first of a first cutter to enter nose angle to extension with definition toward a Party A, and this locating slot is formed at an end on this top and forms toward sunken inside from this end face; And

One bottom, this bottom has multiple fixing perforation, and the plurality of fixing perforation penetrates this inner surface and this outer surface;

Wherein, when applying, multiple retaining element is via the plurality of fixing perforation to be fixedly arranged on the surface of this femur by this first module, and this level is worn groove and is suitable for should the neck of femur of femur penetrate for this first cutter, has one first to cut milling surface to excise this neck of femur and to produce in this femur.

2. femoral hip prosthesis excision appliance system as claimed in claim 1, it includes further:

One second module, this second module has an inner surface and an outer surface, and the second module is formed in one, and includes:

One fixed part, the shape of this fixed part is mutually corresponding with this locating slot, and is suitable for mutually setting firmly with this locating slot; And

One holding part, this holding part is connected with this fixed part, and has a hollow bulb, and this hollow bulb penetrates this inner surface and this outer surface;

One three module, this three module has an inner surface and an outer surface, the shape of this three module is mutually corresponding with this hollow bulb of this second module, this three module is suitable for being embedded at this hollow bulb, this three module has at least two perforation, and this at least two penetrates this inner surface and this outer surface and be suitable for respectively wearing for retaining element;

Wherein, when applying, this three module is embedded among this second module, and this holding part of this second module and this three module are arranged at this simultaneously and first cut milling surface and be a copline, and then define multiple precalculated positions of multiple retaining element by this at least two perforation.

3. femoral hip prosthesis excision appliance system as claimed in claim 2, wherein this fixed part of this second module and the surface of this holding part parallel to each other, and the surface of this fixed part and this holding part has a difference in height.

4. femoral hip prosthesis excision appliance system as claimed in claim 2, it includes a four module further, and have an inner surface and an outer surface, this four module is formed in one, and this four module includes:

One contraposition part, this contraposition part has at least two perforation, and this at least two penetrates this inner surface and this outer surface and be suitable for wearing for the plurality of retaining element; And

Multiplely vertically wear groove, the plurality of groove of vertically wearing penetrates this inner surface and this outer surface and toward a Party B to extension, the plurality of groove of vertically wearing is suitable for having a second to enter nose angle to a second cutter definition respectively;

Wherein, when this three module this at least two perforation be installed with the plurality of retaining element and the second module removes from this femur time, this four module must carry out sheathed the plurality of retaining element by this at least two perforation, by this, the plurality of second cutter first must be cut milling surface to this and vertically excises and produced one second and cut milling surface via the plurality of groove of vertically wearing.

5. femoral hip prosthesis excision appliance system as claimed in claim 4, wherein the plurality of length bearing of trend vertically wearing groove of this four module has an angle, and wherein this angle is an acute angle, and the plurality of vertically wearing between groove is located in this at least two perforation.

6. femoral hip prosthesis excision appliance system as claimed in claim 4, wherein the plurality of length bearing of trend vertically wearing groove of this four module is parallel to each other.

7. femoral hip prosthesis excision appliance system as claimed in claim 4, it includes one the 5th module further, and it includes a sanding apparatus, is suitable for second cutting after milling surface produces at this, and this first is cut to milling surface and second and cut milling surface and repair.

8. femoral hip prosthesis excision appliance system as claimed in claim 1, wherein this retaining element is a nail.

9. femoral hip prosthesis excision appliance system as claimed in claim 1, wherein this retaining element is a spicule.