Orthopedic femoral stem ridge surface groove milling double-station tool

Abstract

The utility model discloses an orthopaedic femoral stem ridge surface groove milling double-station tool which comprises a base, two lower pressing blocks are installed at the top end of the base, a driving piece is installed on the base and located between the two lower pressing blocks, the driving piece drives a connecting rod assembly, and upper pressing blocks matched with the lower pressing blocks are installed at the two ends of the connecting rod assembly. When ridge surface grooves in the two sides of the femoral stem are machined, after the femoral stem is installed at the corresponding positions of the lower pressing block and the upper pressing block, the relative position of the connecting rod assembly is adjusted to press the femoral stem, the right ridge surface groove of the femoral stem starts to be machined after pressing, and after machining is completed, the left ridge surface groove of the femoral stem continues to be machined; in the whole machining process of the ridge surface grooves in the two sides of the femoral stem, the tool does not need to be disassembled and replaced, secondary clamping is not needed, the time for replacing the tool and the secondary clamping is shortened, the tool cost and the machining time are reduced, secondary clamping is not needed, the machining precision is improved, and the efficiency of the whole machining process is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of surgical instruments for femoral stem, specifically a dual-station tooling for milling the ridge surface groove of the orthopedic femoral stem. Background Technology

[0002] The existing orthopedic femoral stem milling ridge groove tooling is a single-station, single-side milling ridge groove tooling. The two ridge grooves need to be milled in two separate processes. After the ridge groove on one side is milled, the femoral stem is removed, the machining tooling is replaced, and the tooling is clamped again before the ridge groove on the other side can be milled.

[0003] The traditional tooling for milling the ridge surface of the femoral stem has the following drawbacks: it can only process one side and one femoral stem at a time, and repeated clamping will lead to a lot of wasted time and cost; moreover, repeated clamping requires the machine tool to be repositioned, and the difference in positioning will affect the accuracy of the product. Utility Model Content

[0004] The purpose of this utility model is to provide a dual-station tooling for milling the ridge surface groove of the femoral stem in orthopedics, so as to solve the problems of existing technology that can only process one side and one femoral stem at a time, and repeated clamping will lead to a lot of wasted time and cost; and repeated clamping requires the machine tool to be repositioned, and the difference in positioning will affect the accuracy of the product.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-station tooling for milling the ridge surface groove of the orthopedic femoral stem, comprising a base, two lower pressing blocks installed at the top of the base, a driving component installed between the two lower pressing blocks on the base, the driving component driving a connecting rod assembly, and upper pressing blocks cooperating with the lower pressing blocks installed at both ends of the connecting rod assembly.

[0006] Preferably, the driving component includes a driving component body and a driving rod, and the driving component body drives the driving rod to move up and down.

[0007] Preferably, the linkage assembly includes a main linkage, a first auxiliary linkage, a second auxiliary linkage, and linkage mounting seats. The main linkage is located on both sides of the drive rod and is connected to the second auxiliary linkage via guide pins. The drive body is equipped with two linkage mounting seats that are connected to the two second auxiliary linkages. The two ends of the main linkage are equipped with first auxiliary linkages that are connected to the upper pressure block.

[0008] Preferably, the main connecting rod includes a main connecting rod body, the main connecting rod body having a guide hole that mates with a guide pin, and the main connecting rod body having a clearance hole at the guide hole; one end of the second auxiliary connecting rod is connected to the guide hole of the main connecting rod body through a guide pin, and the other end of the second auxiliary connecting rod is connected to the connecting rod mounting seat through a rotating shaft.

[0009] Preferably, the upper pressure block includes an upper pressure block body, a second protrusion is provided on one side of the upper pressure block body, and a rotating shaft seat is provided on the other side of the upper pressure block body; one end of the first auxiliary connecting rod is connected to the main connecting rod through a rotating shaft, and the other end of the first auxiliary connecting rod is connected to the rotating shaft seat through a rotating shaft.

[0010] Preferably, the pressing block includes a base and a pressing block body, the pressing block body is provided on the top of the base, and a first protrusion is provided on the top of the pressing block body.

[0011] Preferably, the driving component is detachably fixed to the base by fixing bolts, and the lower pressure block is detachably fixed to the base by fixing bolts.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: two pressing blocks are installed at the top of the base, and a driving component is installed between the two pressing blocks on the base. The driving component drives a connecting rod assembly, and upper pressing blocks that cooperate with the pressing blocks are installed at both ends of the connecting rod assembly. When machining the ridge grooves on both sides of the femoral stem, after the femoral stem is installed in the corresponding positions of the pressing blocks and the upper pressing blocks, the relative position of the connecting rod assembly is adjusted to press the femoral stem. After pressing, the machining of the right ridge groove of the femoral stem begins first. After the machining is completed, the machining of the left ridge groove of the femoral stem continues. During the entire machining process of the ridge grooves on both sides of the femoral stem, it is not necessary to disassemble or change the tooling, nor is it necessary to perform secondary clamping. This reduces the time for changing tooling and secondary clamping, reduces tooling costs and machining time, and improves machining accuracy and efficiency of the entire machining process by eliminating the need for secondary clamping. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is the front view of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the pressure block of this utility model;

[0017] Figure 4 This is a schematic diagram of the upper pressure block of this utility model;

[0018] Figure 5 This is a structural schematic diagram of the drive component and connecting rod assembly of this utility model;

[0019] Figure 6 This is a structural schematic diagram of the main connecting rod of this utility model.

[0020] In the diagram: 1. Base; 2. Drive unit; 3. Lower pressure block; 4. Linkage assembly; 5. Upper pressure block; 6. Fixing bolt; 21. Drive unit body; 22. Drive rod; 31. Base; 32. Lower pressure block body; 33. First protrusion; 41. Main connecting rod; 42. First auxiliary connecting rod; 43. Second auxiliary connecting rod; 44. Guide pin; 45. Linkage mounting seat; 46. Rotary shaft; 411. Main connecting rod body; 412. Clearance hole; 413. Guide hole; 51. Upper pressure block body; 52. Second protrusion; 53. Rotary shaft seat. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0022] Please see Figure 1-2 In this embodiment of the invention, a dual-station tooling for milling the ridge surface of the femoral stem includes a base 1. Two lower pressure blocks 3 are mounted on the top of the base 1. A driving component 2 is mounted between the two lower pressure blocks 3 on the base 1. The driving component 2 drives a connecting rod assembly 4. Upper pressure blocks 5, which cooperate with the lower pressure blocks 3, are mounted at both ends of the connecting rod assembly 4. The driving component 2 is detachably fixed to the base 1 by fixing bolts 6, and the lower pressure blocks 3 are detachably fixed to the base 1 by fixing bolts 6. The tooling is used to mill the ridge surfaces on both sides of the femoral stem. During the groove machining process, after installing the femoral stem into the corresponding positions of the lower pressure block 3 and the upper pressure block 5, the relative position of the connecting rod assembly 4 is adjusted to press the femoral stem. After pressing, the right ridge groove of the femoral stem is machined first. After the machining is completed, the machining of the left ridge groove of the femoral stem continues. During the entire machining process of the ridge grooves on both sides of the femoral stem, it is not necessary to disassemble or change the tooling, nor is it necessary to perform secondary clamping. This reduces the time for changing tooling and secondary clamping, reduces tooling costs and machining time, and improves machining accuracy and overall machining efficiency.

[0023] like Figure 1 and 5 The driving component 2 includes a driving component body 21 and a driving rod 22. The driving component body 21 drives the driving rod 22 to rise and fall. The rising and falling of the driving rod 22 can control the rising and falling of the linkage assembly 4.

[0024] like Figure 1 , 5 6. The linkage assembly 4 includes a main linkage 41, a first auxiliary linkage 42, a second auxiliary linkage 43, and a linkage mounting base 45. The main linkage 41 is located on both sides of the drive rod 22 and is connected to the second auxiliary linkage 43 via guide pins 44. The drive body 21 is equipped with two linkage mounting bases 45 connected to the two second auxiliary linkages 43. The second auxiliary linkages 43 can provide auxiliary support for the main linkage 41 to ensure its stability. The two ends of the main linkage 41 are equipped with first auxiliary linkages 42 connected to the upper pressure block 5. The main linkage 41 includes The main connecting rod body 411 has a guide hole 413 that mates with a guide pin 44, and an clearance hole 412 located at the guide hole 413. One end of the second auxiliary connecting rod 43 is connected to the guide hole 413 of the main connecting rod body 411 via the guide pin 44, and the other end of the second auxiliary connecting rod 43 is connected to the connecting rod mounting base 45 via a rotating shaft 46. Each upper pressure block 5 corresponds to two second auxiliary connecting rods 43, and the two second auxiliary connecting rods 43 apply pressure to the upper pressure block 5 to further ensure the uniformity of pressure.

[0025] like Figure 1 , 3 4. The lower pressing block 3 includes a base 31 and a lower pressing block body 32. The lower pressing block body 32 is provided on the top of the base 31, and a first protrusion 33 is provided on the top of the lower pressing block body 32. The upper pressing block 5 includes an upper pressing block body 51. A second protrusion 52 is provided on one side of the upper pressing block body 51, and a rotating shaft seat 53 is provided on the other side of the upper pressing block body 51. The femoral stem can be clamped by the lower pressing block 3 and the upper pressing block 5. The protrusion can improve the clamping effect. One end of the first auxiliary connecting rod 42 is connected to the main connecting rod 41 through a rotating shaft 46, and the other end of the first auxiliary connecting rod 42 is connected to the rotating shaft seat 53 through a rotating shaft 46.

[0026] The working principle of this utility model is as follows: When machining the ridge grooves on both sides of the femoral stem, after installing the femoral stem into the corresponding positions of the lower pressure block 3 and the upper pressure block 5, the relative position of the connecting rod assembly 4 is adjusted to press the femoral stem. After pressing, the machining of the right ridge groove of the femoral stem begins first. After the machining is completed, the machining of the left ridge groove of the femoral stem continues. During the entire machining process of the ridge grooves on both sides of the femoral stem, it is not necessary to disassemble or change the tooling, nor is it necessary to perform secondary clamping. This reduces the time for changing tooling and secondary clamping, reduces tooling costs and machining time, and improves machining accuracy and efficiency of the entire machining process by eliminating the need for secondary clamping.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-station tooling for milling the ridge surface groove of the femoral stem in orthopedics, comprising a base (1), characterized in that: Two pressing blocks (3) are installed at the top of the base (1). A driving component (2) is installed between the two pressing blocks (3) on the base (1). The driving component (2) drives a connecting rod assembly (4). Upper pressing blocks (5) that cooperate with the pressing blocks (3) are installed at both ends of the connecting rod assembly (4).

2. The dual-station tooling for milling the ridge surface groove of the orthopedic femoral stem according to claim 1, characterized in that: The driving component (2) includes a driving component body (21) and a driving rod (22), and the driving component body (21) drives the driving rod (22) to rise and fall.

3. The orthopedic femoral stem milling ridge groove dual-station tooling according to claim 2, characterized in that: The linkage assembly (4) includes a main linkage (41), a first auxiliary linkage (42), a second auxiliary linkage (43), and a linkage mounting base (45). The main linkage (41) is located on both sides of the drive rod (22) and is connected to the second auxiliary linkage (43) by guide pins (44). The drive body (21) is equipped with two linkage mounting bases (45) that are connected to the two second auxiliary linkages (43). The two ends of the main linkage (41) are equipped with the first auxiliary linkage (42) that are connected to the upper pressure block (5).

4. The dual-station tooling for milling the ridge surface groove of the orthopedic femoral stem according to claim 3, characterized in that: The main connecting rod (41) includes a main connecting rod body (411), which has a guide hole (413) that cooperates with the guide pin (44) and a clearance hole (412) located at the guide hole (413). One end of the second auxiliary connecting rod (43) is connected to the guide hole (413) of the main connecting rod body (411) through the guide pin (44), and the other end of the second auxiliary connecting rod (43) is connected to the connecting rod mounting seat (45) through the rotating shaft (46).

5. A dual-station tooling for milling the ridge surface groove of the orthopedic femoral stem according to claim 3 or 4, characterized in that: The upper pressure block (5) includes an upper pressure block body (51), a second protrusion (52) is provided on one side of the upper pressure block body (51), and a rotating shaft seat (53) is provided on the other side of the upper pressure block body (51); one end of the first auxiliary connecting rod (42) is connected to the main connecting rod (41) through a rotating shaft (46), and the other end of the first auxiliary connecting rod (42) is connected to the rotating shaft seat (53) through a rotating shaft (46).

6. The dual-station tooling for milling the ridge surface groove of the orthopedic femoral stem according to claim 1, characterized in that: The pressing block (3) includes a base (31) and a pressing block body (32). The pressing block body (32) is provided on the top of the base (31), and a first protrusion (33) is provided on the top of the pressing block body (32).

7. The dual-station tooling for milling the ridge surface groove of the orthopedic femoral stem according to claim 1, characterized in that: The drive component (2) is detachably fixed to the base (1) by fixing bolts (6), and the lower pressure block (3) is detachably fixed to the base (1) by fixing bolts (6).

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