Surgical instrument for complementing robotic artificial joint surgery

Abstract

A surgical instrument for complementing a robotic artificial joint surgery is disclosed. The surgical instrument for complementing robotic artificial joint surgery according to the present invention comprises: a chamfer cutting guide which is disposed on the cut surface of the distal femur cut by using a robot and guides a position and a movement direction of a saw blade in a process of manually cutting the front femur, a front chamfer, and a rear chamfer by an operator; and an auxiliary frame coupled to the chamfer cutting guide to align the position of the chamfer cutting guide with reference to the cut surface of the rear femur cut by using the robot.

Description

Surgical instruments to complement robotic joint replacement surgery

[0001] The present invention relates to a surgical instrument for supplementing robotic artificial joint surgery, which is used in the process of cutting the femur without using a robot by a surgeon (doctor) in robot-assisted total knee arthroplasty (TKA).

[0002] In general, robot-assisted total knee arthroplasty (TKA) offers many advantages over conventional surgical methods performed solely or manually by the surgeon, including precise bone resection, appropriate positioning of artificial joint components, and restoration of mechanical leg axis alignment.

[0003] Accordingly, robotic total knee replacement surgery is becoming more common and widely used as a replacement for conventional surgical methods despite its relatively high surgical cost.

[0004] Meanwhile, in robotic total knee replacement surgery, cutting of specific parts of the femur and tibia is performed by an oscillating saw tool mounted on a robotic arm and controlled by a robotic system.

[0005] However, there are some aspects of total knee replacement using robots that need improvement. One of these aspects is that, after reviewing the records of many surgical cases, it was found that many cases were re-excised due to inaccurate bone resection or cutting caused by the patient's strong femur.

[0006] In the process of cutting the femur using a vibrating saw tool mounted on a robot arm in a robot-assisted total knee replacement surgery, the vibrating saw tool cuts the femur with an angle saw, not a straight saw, in the case of the posterior chamfer of the femur, etc. Since the angle saw transmits force in a state where it is bent by about 90 degrees to the rotational axis of the vibrating saw tool, its cutting force is weaker than that of a straight saw, so it is presumed that in some patients, problems occurred in which the bone was not accurately cut in the posterior chamfer of the femur due to the hard femur.

[0007] Accordingly, there is a need for research and development of a surgical instrument that can be used in the process of the surgeon manually precisely cutting the bone, such as the posterior chamfer of the femur, while maintaining the advantages and pros of robotic total knee replacement surgery and combining the advantages of existing surgical methods, so that robotic total knee replacement surgery can be performed without problems.

[0008] Related prior art documents include Korean Patent Publication No. 10-1043048 (Title: Device set for artificial knee joint replacement surgery, Publication date: June 21, 2011), Korean Patent Publication No. 10-2186308 (Title: Surgical device for smart artificial joint replacement surgery, Publication date: December 3, 2020), Korean Patent Publication No. 10-1073871 (Title: Alignment linkage device set for artificial knee joint replacement surgery, Publication date: October 14, 2011), and Korean Patent Publication No. 10-0566767 (Title: Alignment linkage device for linking the alignment of a femoral osteotome and a tibial bender in artificial joint replacement surgery, Publication date: March 31, 2006).

[0009] The purpose of the present invention is to provide a surgical instrument that can be used by a surgeon to accurately cut the posterior chamfer of the femur or other bone manually or manually, while maintaining the advantages or benefits of total knee replacement using a robot, thereby allowing total knee replacement using a robot to be performed without problems such as re-excision.

[0010] The above object is achieved by a surgical instrument for supplementing robotic artificial joint surgery, characterized in that it includes a chamfer cutting guide that is positioned on a resected surface of a distal femur cut using a robot and guides the position and movement direction of a saw blade during a process in which an anterior femur, anterior chamfer, and posterior chamfer are manually cut by a surgeon, and an auxiliary frame that is coupled with the chamfer cutting guide to align the position of the chamfer cutting guide with respect to the resected surface of the posterior femur cut using the robot.

[0011] Preferably, the chamfer cutting guide may include a first cutting guide groove that guides the position and movement direction of the saw blade during the process of cutting the anterior femur, a second cutting guide groove that guides the position and movement direction of the saw blade during the process of cutting the anterior chamfer, and a third cutting guide groove that guides the position and movement direction of the saw blade during the process of cutting the rear chamfer.

[0012] Preferably, the chamfer cutting guide may further include a fixing pin inserted into the resected surface of the distal femur so as to be stably fixed to the resected surface of the distal femur.

[0013] Preferably, the auxiliary frame may include a posterior femoral contact portion that is positioned in contact with the resected surface of the posterior femur while in combination with the chamfer cutting guide.

[0014] Preferably, the chamfer cutting guide further includes an auxiliary frame coupling groove into which a contact portion with the rear of the femur is inserted, and the auxiliary frame may further include a frame body portion provided in a shape that supports the contact portion with the rear of the femur and covers the lower side of the chamfer cutting guide while the contact portion with the rear of the femur is inserted into the auxiliary frame coupling groove.

[0015] Preferably, the contact portion with the posterior femur may be provided by a pair of finger plates spaced apart from each other.

[0016] Preferably, the chamfer cutting guide further includes an auxiliary frame coupling groove into which a contact portion is inserted with the rear of the femur, and the auxiliary frame coupling groove is provided as a pair of auxiliary frame coupling grooves by a partition formed in a central region, and the pair of finger plates can be inserted into each of the pair of auxiliary frame coupling grooves.

[0017] Preferably, the chamfer cutting guide is positioned on the resected surface of the distal femur with its position aligned with the resected surface of the posterior femur by the auxiliary frame, and when the chamfer cutting guide is fixed to the resected surface of the distal femur, after separating and removing the auxiliary frame from the chamfer cutting guide, a process of manually cutting the anterior femur, the anterior chamfer, and the posterior chamfer by an operator using the chamfer cutting guide can be performed.

[0018] According to a surgical instrument for supplementing robotic total knee arthroplasty according to one embodiment of the present invention, the surgical instrument includes a chamfer cutting guide that is positioned on the resected surface of a distal femur cut using a robot and guides the position and direction of movement of a saw blade during the process of manually cutting an anterior femur, anterior chamfer, and posterior chamfer by a surgeon, and an auxiliary frame that is coupled with the chamfer cutting guide to align the position of the chamfer cutting guide with respect to the resected surface of the posterior femur cut using the robot, thereby maintaining the advantages or benefits of robotic total knee arthroplasty, while allowing the surgeon to accurately cut the bone, such as the posterior chamfer of the femur, manually or manually, and thereby exhibiting the effect of being able to perform robotic total knee arthroplasty without problems such as re-resection.

[0019] FIG. 1 is a perspective view of a surgical instrument for supplementing robotic artificial joint surgery according to one embodiment of the present invention.

[0020] Fig. 2 is a side view showing a state in which a chamfer cutting guide and an auxiliary frame are combined in a surgical instrument for supplementing the robotic artificial joint surgery of Fig. 1.

[0021] FIG. 3 is a front view of a chamfer cutting guide in a surgical instrument for supplementing the robotic artificial joint surgery of FIG. 1.

[0022] FIG. 4 is a rear view of a chamfer cutting guide in a surgical instrument for supplementing the robotic artificial joint surgery of FIG. 2 and FIG. 1.

[0023] Fig. 5 is a plan view of an auxiliary frame in a surgical instrument for supplementing the robotic artificial joint surgery of Fig. 1.

[0024] Fig. 6 is a bottom view of an auxiliary frame in a surgical instrument for supplementing the robotic artificial joint surgery of Fig. 1.

[0025] Figure 7 is a schematic drawing for explaining the process of cutting the distal femur, posterior femur, and proximal tibia using a robot applied to the present invention.

[0026] FIGS. 8 to 10 are schematic drawings illustrating a process in which a surgeon manually cuts a femur without using a robot, using a surgical instrument to supplement the robotic artificial joint surgery of FIG. 1.

[0027] In order to fully understand the present invention, its operational advantages, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

[0028] Hereinafter, the present invention will be described in detail by describing preferred embodiments thereof with reference to the attached drawings. However, in explaining the present invention, descriptions of previously known functions or configurations will be omitted to clarify the gist of the present invention.

[0029] FIG. 1 is a perspective view of a surgical instrument for supplementing robotic artificial joint surgery according to one embodiment of the present invention, and FIG. 2 is a side view showing a state in which a chamfer cutting guide and an auxiliary frame are combined in the surgical instrument for supplementing robotic artificial joint surgery of FIG. 1.

[0030] And, FIGS. 3 and 4 are front and back views of a chamfer cutting guide in a surgical instrument for supplementing the robotic artificial joint surgery of FIG. 1, and FIGS. 5 and 6 are plan and bottom views of an auxiliary frame in a surgical instrument for supplementing the robotic artificial joint surgery of FIG. 1.

[0031] A surgical instrument (hereinafter referred to as a “surgical instrument”) for supplementing robotic artificial joint surgery according to one embodiment of the present invention is a surgical instrument used in a process in which a surgeon (doctor) manually or manually cuts the femur without using a robot after cutting the distal femur, the posterior femoral condyle, and the proximal tibia with the help of a robot system during a total knee joint replacement surgery using a robot, and includes a chamfer cutting guide (100) positioned on a resected surface (11, see FIG. 7) of the distal femur cut using a robot, as illustrated in FIGS. 1 to 6, and an auxiliary frame (200) for aligning the position of the chamfer cutting guide (100) based on the resected surface (12, see FIG. 7) of the posterior femur cut using a robot.

[0032] Referring to FIGS. 1 to 4, a chamfer cutting guide (100) is positioned in a fixed state in contact with the resected surface (11) of the distal femur cut using a robot (see FIG. 9), and then, during the process of manually cutting the anterior femur (13), anterior chamfer (14), and posterior chamfer (15) by a surgeon (doctor), it includes an upper body part (110), a central body part (120), a lower body part (130), and a fixing pin (140) as a means for guiding the position and movement direction of a saw blade (not shown) (see FIG. 10).

[0033] At this time, in the chamfer cutting guide (100), as shown in FIGS. 1 to 4, the upper body part (110) and the central body part (120) are connected by the first connecting body part (115), and the central body part (120) and the lower body part (130) are connected by the second connecting body part (135), so that the upper body part (110), the central body part (120), and the lower body part (130) are formed integrally. In addition, in the chamfer cutting guide (100), the fixing pin (140) is formed to protrude rearward from the rear surface of the central body part (120), as shown in FIGS. 2 and 4.

[0034] A first cutting guide groove (111) is formed in the upper body (110) of the chamfer cutting guide (100) to guide the position and movement direction of the saw blade when the operator cuts the anterior femur (13) without using a robot. In addition, a second cutting guide groove (122) is formed in the central body (120) of the chamfer cutting guide (100) to guide the position and movement direction of the saw blade when the operator cuts the anterior chamfer (14) of the femur without using a robot, and a third cutting guide groove (123) is formed in the central body (120) of the chamfer cutting guide (100) to guide the position and movement direction of the saw blade when the operator cuts the posterior chamfer (15) of the femur without using a robot. At this time, the second cutting guide groove (122) is formed in an upwardly inclined shape in the central body portion (120) as shown in FIG. 2 to correspond to the cutting angle of the front chamfer (14) of the femur, and the third cutting guide groove (123) is formed in a downwardly inclined shape in the central body portion (120) as shown in FIG. 2 to correspond to the cutting angle of the rear chamfer (15) of the femur.

[0035] That is, the chamfer cutting guide (100) includes a first cutting guide groove (111) that guides the position and movement direction of the saw blade during the process of cutting the front femur (13), a second cutting guide groove (122) that guides the position and movement direction of the saw blade during the process of cutting the front chamfer (14), and a third cutting guide groove (123) that guides the position and movement direction of the saw blade during the process of cutting the rear chamfer (15).

[0036] An auxiliary frame joining groove (131) is formed in the lower body part (130) of the chamfer cutting guide (100), into which the rear femur and contact part (210) of the auxiliary frame (200) described later are inserted. At this time, the auxiliary frame joining groove (131) is formed by a space between the upper plate (132) and the lower plate (133) which are spaced apart from each other in the vertical direction of the lower body part (130), and as shown in FIGS. 3 and 4, it is formed as a left and right pair by a partition wall (134) formed in the central region of the lower body part (130) between the upper plate (132) and the lower plate (133) of the lower body part (130).

[0037] The fixing pin (140) of the chamfer cutting guide (100) is a means for stably fixing the chamfer cutting guide (100) to the resected surface (11) of the distal femur, and fixes the chamfer cutting guide (100) to the resected surface (11) of the distal femur by penetratingly inserting into the resected surface (11) of the distal femur. That is, the chamfer cutting guide (100) is fixed in contact with the resected surface (11) of the distal femur by driving the fixing pin (140) into the resected surface (11) of the distal femur. At this time, in the process of inserting the fixed pin (140) into the resected surface (11) of the distal femur, the operator uses a predetermined striking tool (not shown), and a tool contact groove (125) is formed in the central body (120) of the chamfer cutting guide (100) as shown in FIGS. 1 and 3 so that the striking tool can be stably contacted and supported.

[0038] In this embodiment, the fixing pin (140) of the chamfer cutting guide (100) is formed to protrude rearward from the rear surface of the central body portion (120) of the chamfer cutting guide (100) as shown in FIGS. 2 and 4, and is provided as a pair on the left and right. Here, 'rearward' means the direction toward the resected surface (11) of the distal femur.

[0039] Meanwhile, as shown in FIGS. 1 to 4, a fastening hole (126) is formed at each of the left and right ends of the central body (120) of the chamfer cutting guide (100). A separately provided fastening pin (P, see FIG. 10) penetrates through the fastening hole (126) to more firmly fix the chamfer cutting guide (100) to the resected surface (11) of the distal femur and is fastened to the resected surface (11) of the distal femur.

[0040] Referring to FIGS. 1, 2, 5 and 6, the auxiliary frame (200) is provided separately from the chamfer cutting guide (100), and includes a femur posterior contact portion (210) and a frame body portion (230) as a means for aligning the position of the chamfer cutting guide (100) based on the resected surface (12) of the posterior femur cut using a robot in a state combined with the chamfer cutting guide (100) (see FIGS. 8 and 9). At this time, in the auxiliary frame (200), the femur posterior contact portion (210) and the frame body portion (230) are integrally formed by sheet metal processing and bending processing.

[0041] The upper surface of the auxiliary frame (200) in contact with the rear femur and the contact portion (210) is positioned so that the auxiliary frame (200) is in contact with the resected surface (12) of the rear femur while being combined with the chamfer cutting guide (100), thereby aligning the position of the chamfer cutting guide (100) with respect to the resected surface (12) of the rear femur.

[0042] This femoral posterior contact portion (210) is provided in the shape of a plate extending rearward from the frame body portion (230) as illustrated in FIGS. 1, 2, 5, and 6, and is preferably provided as a pair of finger plates (211, 212) spaced apart from each other. In addition, the pair of finger plates (211, 212) are each inserted into an auxiliary frame joining groove (131) formed as a left and right pair by a partition wall (134) in the lower body portion (130) of the chamfer cutting guide (100). At this time, the partition wall (134) of the lower body portion (130) of the chamfer cutting guide (100) is inserted into the gap portion between the pair of finger plates (211, 212).

[0043] Accordingly, the auxiliary frame (200) is coupled with the chamfer cutting guide (100) in such a way that the contact portion (210) provided with the rear of the femur and the rear of the femur is inserted into the auxiliary frame coupling groove (131) of the chamfer cutting guide (100) by a pair of finger plates (211, 212).

[0044] The frame body (230) of the auxiliary frame (200) supports the rear of the femur and the contact portion (210), and is provided in a shape that surrounds the front side and the bottom side of the lower body (130) of the chamfer cutting guide (100) when the auxiliary frame (200) is combined with the chamfer cutting guide (100).

[0045] Specifically, the frame body (230) includes a first portion (231) that is bent and extended downwardly from one side (front side) of the rear femur and the contact portion (210) while the auxiliary frame (200) is coupled with the chamfer cutting guide (100) as illustrated in FIGS. 1, 2, 5, and 6, and a second portion (232) that is bent and extended backwardly from the first portion (231) so as to cover the lower side of the auxiliary frame coupling groove (131) of the chamfer cutting guide (100) and is arranged parallel to the rear femur and the contact portion (210). That is, the frame body (230) is bent and extended downward from one side (front side) of the rear of the femur and the contact portion (210), and then, with the rear of the femur and the contact portion (210) inserted into the auxiliary frame joining groove (131) of the chamfer cutting guide (100), is bent and extended backward to cover the lower side of the chamfer cutting guide (100), and is provided in a shape in which the rear of the femur and the contact portion (210) are arranged in parallel.

[0046] At this time, the first part (231) is arranged to cover the front side of the lower body part (130) of the chamfer cutting guide (100) when the auxiliary frame (200) is coupled with the chamfer cutting guide (100), and the second part (232) is arranged to cover the bottom side of the lower body part (130) of the chamfer cutting guide (100) when the auxiliary frame (200) is coupled with the chamfer cutting guide (100).

[0047] Meanwhile, the auxiliary frame (200) is separated and removed from the chamfer cutting guide (100) after being placed on the resected surface (11) of the distal femur while the chamfer cutting guide (100) is combined with the auxiliary frame (200) and then fixed to the resected surface (11) of the distal femur by the fixing pin (140).

[0048] Hereinafter, with reference to FIGS. 7 to 10, a process of performing robotic total knee joint replacement using a surgical instrument for supplementing robotic artificial joint surgery according to one embodiment of the present invention will be described in detail.

[0049] FIG. 7 is a schematic diagram illustrating a process of cutting the distal femur, posterior femur, and proximal tibia using a robot applied to the present invention. FIGS. 8 to 10 are schematic diagrams illustrating a process of a surgeon manually cutting the femur without using a robot using a surgical instrument to supplement a robot-assisted knee joint replacement surgery according to one embodiment of the present invention.

[0050] First, as shown in Fig. 7, a process of cutting a specific part of the femur (10) and tibia (20) using a robot is performed.

[0051] Specifically, in this step, the oscillating saw tool of the robotic system precisely cuts the distal femur, posterior femur, and proximal tibia within a virtual boundary preset by the robotic system to protect the soft tissue of the surgical site according to the characteristics or circumstances of the patient, thereby forming a resected surface (11) of the distal femur, a resected surface (12) of the posterior femur, and a resected surface (21) of the proximal tibia, as illustrated in FIG. 7. At this time, the oscillating saw tool is controlled by the robotic system while mounted on the arm of the robot.

[0052] For reference, in robotic total knee arthroplasty, prior to performing the process of using a robot to cut specific portions of the femur (10) and tibia (20), a CT scan of the patient's lower extremities is performed for preoperative surgical planning, and the imaging is integrated with the robotic system to identify the optimal implant size, alignment, and position. Then, in the operating room, a standard medial parapatellar approach is used to remove the anterior and posterior cruciate ligaments, and the entire knee is exposed. Landmark correction and bone registration are performed using a probe to identify the actual bony position and intraoperative coronal alignment. Here, intraoperative ligament and gap balance is manually performed using a spoon or spreader through knee mechanics including knee flexion, varus / valgus, and rotation. After the robotic system symmetrically adjusts the balance and gap appropriately, the appropriate implant position and orientation are defined, approved by the operating surgeon, and stored in the robotic system.

[0053] Next, as shown in FIGS. 8 and 9, a chamfer cutting guide (100) coupled with an auxiliary frame (200) of a surgical instrument according to one embodiment of the present invention is placed flat on the resected surface (11) of the distal femur, and then a process of fixing the chamfer cutting guide (100) to the resected surface (11) of the distal femur is performed.

[0054] Specifically, in this step, the auxiliary frame (200) is placed so that the rear of the femur and the contact portion (210) thereof are in contact with the resected surface (12) of the posterior femur previously cut by the vibrating saw blade tool of the robot system, and the chamfer cutting guide (100) is placed in contact with the resected surface (11) of the distal femur previously cut by the vibrating saw blade tool of the robot system while being coupled with the auxiliary frame (200). Then, the chamfer cutting guide (100) is fixed to the resected surface (11) of the distal femur by the fixing pin (140) in this position. At this time, the operator can fix the chamfer cutting guide (100) to the resected surface (11) of the distal femur by striking the chamfer cutting guide (100) while placing a predetermined striking tool against the tool contact groove (125) of the chamfer cutting guide (100) and driving the fixing pin (140) into the resected surface (11) of the distal femur.

[0055] At this time, in order to more firmly fix the chamfer cutting guide (100) to the resected surface (11) of the distal femur, a separately provided fastening pin (P) as shown in FIG. 10 may be used, and this fastening pin (P) is fastened and fixed to the resected surface (11) of the distal femur by penetrating the fastening hole (126, see FIGS. 1 to 4) formed at the left and right ends of the central body portion (120).

[0056] Accordingly, the chamfer cutting guide (100) can be positioned and fixed relative to the resected surface (11) of the distal femur with its position aligned on a first coordinate plane (e.g., ZX plane) based on the resected surface (11) of the distal femur itself, and with its position aligned on a second coordinate plane (e.g., XY plane) and a third coordinate plane (e.g., YZ plane) based on the resected surface (12) of the posterior femur by the auxiliary frame (200).

[0057] Next, as shown in Fig. 10, after the auxiliary frame (200) is separated and removed from the chamfer cutting guide (100) while the chamfer cutting guide (100) is fixed to the resected surface (11) of the distal femur, a process of manually cutting the anterior femur (13), anterior chamfer (14), and posterior chamfer (15) by the operator using the chamfer cutting guide (100) is performed.

[0058] Specifically, in this step, the operator, while holding the vibrating saw tool without the assistance of the robotic system, inserts the saw blade of the vibrating saw tool into the first cutting guide groove (111) of the chamfer cutting guide (100) to cut the anterior femur (13) according to the position and moving direction guided by the first cutting guide groove (111), inserts the saw blade of the vibrating saw tool into the second cutting guide groove (122) of the chamfer cutting guide (100) to cut the anterior chamfer (14) according to the position and moving direction guided by the second cutting guide groove (122), and inserts the saw blade of the vibrating saw tool into the third cutting guide groove (123) of the chamfer cutting guide (100) to cut the rear chamfer (15) according to the position and moving direction guided by the third cutting guide groove (123).

[0059] At this time, since the chamfer cutting guide (100) is precisely aligned and positioned and fixed based on the resected surface (11) of the distal femur and the resected surface (12) of the posterior femur, which are precisely cut using a robot according to the characteristics or circumstances of the patient as described above, even if the operator manually cuts the anterior femur (13), the anterior chamfer (14), and the posterior chamfer (15) without using a robot, the chamfer cutting guide (100) can be used to accurately cut the anterior femur (13), the anterior chamfer (14), and the posterior chamfer (15) along a predetermined line guided by the chamfer cutting guide (100).

[0060] While the present invention has been described in detail through preferred embodiments thereof, it will be apparent to those skilled in the art that the present invention is not limited to the aforementioned preferred embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Accordingly, such modifications and variations should fall within the scope of the claims of the present invention.

[0061] The present invention can be widely used in the field of artificial joint surgery using robots.

Claims

1. A chamfer cutting guide that is placed on the resected surface of the distal femur cut using a robot and guides the position and movement direction of the saw blade during the process of manually cutting the anterior femur, anterior chamfer, and posterior chamfer by the operator; and An auxiliary frame coupled with the chamfer cutting guide to align the position of the chamfer cutting guide with respect to the resected surface of the posterior femur cut using the robot. A surgical instrument for complementing robotic artificial joint surgery, characterized by including:

2. In paragraph 1, The above chamfer cutting guide is A first cutting guide groove that guides the position and movement direction of the saw blade during the process of cutting the anterior femur; A second cutting guide groove that guides the position and movement direction of the saw blade during the process of cutting the front chamfer; and A third cutting guide groove that guides the position and movement direction of the saw blade during the process of cutting the rear chamfer. A surgical instrument for complementing robotic artificial joint surgery, characterized by including:

3. In paragraph 2 The above chamfer cutting guide is A fixation pin inserted into the resected surface of the distal femur to be stably fixed to the resected surface of the distal femur A surgical instrument for complementing robotic artificial joint surgery, characterized by further including:

4. In any one of paragraphs 1 to 3 The above auxiliary frame A contact portion with the posterior femur, which is placed in contact with the resected surface of the posterior femur while combined with the above chamfer cutting guide. A surgical instrument for complementing robotic artificial joint surgery, characterized by including a .

5. In paragraph 4 The above chamfer cutting guide is Auxiliary frame joint groove into which the above femoral posterior and contact portions are inserted Including more, The above auxiliary frame A frame body part provided in a shape that supports the rear of the femur and the contact part and covers the lower side of the chamfer cutting guide while the rear of the femur and the contact part are inserted into the auxiliary frame joining groove. A surgical instrument for complementing robotic artificial joint surgery, characterized by further including:

6. In paragraph 4 The above contact area with the posterior femur A surgical instrument for complementing robotic artificial joint surgery, characterized in that it is provided with a pair of finger plates spaced apart from each other.

7. In Article 6 The above chamfer cutting guide is Auxiliary frame joint groove into which the above femoral posterior and contact portions are inserted Including more, The above auxiliary frame joining groove is provided as a pair of auxiliary frame joining grooves by a bulkhead formed in the central area, A surgical instrument for supplementing robotic artificial joint surgery, characterized in that the pair of finger plates are each inserted into the pair of auxiliary frame joining grooves.

8. In paragraph 4 The above chamfer cutting guide is positioned on the resected surface of the distal femur with its position aligned with the resected surface of the posterior femur by the auxiliary frame, A surgical instrument for supplementing robotic artificial joint surgery, characterized in that when the chamfer cutting guide is fixed to the resected surface of the distal femur, the auxiliary frame is separated and removed from the chamfer cutting guide, and then the anterior femur, the anterior chamfer, and the posterior chamfer are manually cut by a surgeon using the chamfer cutting guide.

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