Prosthesis positioning device

Abstract

The utility model provides a prosthesis positioning device, which comprises a measuring component, a positioning component and a positioning component, the measuring component comprises a first attitude measurer and a second attitude measurer, and the first attitude measurer is in signal connection with the second attitude measurer; the positioning assembly abuts against the to-be-measured part, and the positioning assembly comprises a first fixing part used for fixing the first attitude measurer; the display assembly is fixedly connected with the to-be-installed part, the display assembly is provided with a displayer, the displayer is used for displaying the front inclination angle and the abduction angle of the prosthesis, and a second fixing part is arranged on the display assembly and used for fixing the second attitude measurer; the operation assembly is used for installing a prosthesis, and a third fixing part used for fixing the first attitude measurer is arranged on the operation assembly in a relatively movable mode; the calculation module is in signal connection with the first attitude detector and the second attitude detector; the calculation module is in signal connection with the display assembly. The technical problem that the placement angle of the acetabular cup prosthesis is not accurate enough in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hip replacement surgery, in particular to a prosthesis positioning device. Background Art

[0002] Total hip replacement is one of the important surgical methods for treating hip joint diseases. The key point in total hip replacement is the placement angle of the acetabular cup prosthesis. A good placement angle can effectively reduce the occurrence of complications such as prosthesis collision or dislocation.

[0003] At present, hip replacement surgery can be performed by hand, navigation robot and 3D printing personalized guide. Hand-free doctors use purely mechanical tools to complete the operation, and the angle of grinding and implantation is completely based on experience and feeling, so there is a large deviation between different doctors. Although navigation robots can achieve precise placement, the cost of robots is very high, it is difficult to popularize in hospitals, and the operation time is prolonged. 3D printing personalized guides combined with traditional methods have the advantages of low cost and short operation time, but because the inside of the acetabulum is spherical and the cartilage covers a large area, the cartilage cannot be visualized in CT, so the guides designed based on CT are usually difficult to place stably or find the exact position. After placement, they usually rely on the fixed openings on the printouts to produce a fixed grinding and implantation guide, which is not conducive to doctors changing the implantation angle according to the actual situation of the patient during the operation.

[0004] Therefore, the prior art needs to be further developed. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies and provide a prosthesis positioning device to solve the technical problem that the placement angle of the acetabular cup prosthesis in the related art is not accurate enough.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical scheme: a prosthesis positioning device is provided, including: a measuring component, the measuring component includes a first attitude meter and a second attitude meter, and the first attitude meter is connected to the second attitude meter by signal; a positioning component, the positioning component abuts against the part to be measured, and the positioning component includes a first fixing part for fixing the first attitude meter; a display component, the display component is fixedly connected to the part to be operated, the display component has a display, the display is used to display the anteversion angle and abduction angle of the prosthesis, and the display component is provided with a second fixing part, and the second fixing part is used to fix the second attitude meter; an operating component, the operating component is used to install the prosthesis, and the operating component is relatively movably provided with a third fixing part for fixing the first attitude meter; a computing module, the computing module is connected to both the first attitude meter and the second attitude meter by signal; the computing module is used to calculate the pelvic reference plane; the computing module is used to calculate the anteversion angle and abduction angle of the first attitude meter on the third fixing part relative to the pelvic reference plane; the computing module is connected to the display component by signal.

[0007] Furthermore, the positioning assembly includes a guide plate, which includes: a limiting portion, which abuts against the part to be operated to determine the posture of the positioning assembly; an installation portion, which is connected to the limiting portion, and is provided with an installation groove, and the installation portion protrudes from the surface of the guide plate; a guiding portion, which passes through the guiding portion, and is provided with a guide groove, and the extension direction of the guide groove is parallel to the extension direction of the installation groove.

[0008] Furthermore, a mounting hole is provided on the side wall of the mounting groove, and the mounting hole is connected to the outside of the mounting groove.

[0009] Furthermore, the positioning assembly also includes a measuring rod, a side wall of the measuring rod is provided with a mounting protrusion, the mounting protrusion is engaged with the mounting hole to install the measuring rod in the mounting groove, and a first fixing portion for fixing the first attitude measuring device is provided at one end of the measuring rod away from the mounting protrusion.

[0010] Furthermore, the display assembly further includes a fourth fixing portion, which is arranged on the display assembly at an interval with the second fixing portion, and the fourth fixing portion is used to place the first attitude detector.

[0011] Furthermore, a power supply compartment is also provided on the display assembly, and the power supply compartment is used to install a power supply.

[0012] Furthermore, the display component also includes: a display component, on which the display and the second fixing part are both arranged; a supporting component, connected to the display component, on which a supporting surface for fitting with the part to be installed is arranged; and a fixing component, which is arranged on a side of the display component away from the display, and is used to fix the display component to the part to be installed.

[0013] Furthermore, the fixing component includes: a connecting plate, which is connected to the side of the display assembly away from the display; a fixing plate, which is provided with a fixing hole for the fixing member to pass through; and a connecting rod, which connects the connecting plate and the fixing plate.

[0014] Furthermore, the supporting surface is a curved surface.

[0015] Furthermore, the operating assembly also includes: a file rod, which is used to adjust the shape of the part to be operated; a holder, which is used to clamp the prosthesis connecting component, the connecting component is detachably connected to the file rod and the holder, and the third fixing part is arranged on the connecting component.

[0016] Beneficial effects:

[0017] 1. The prosthesis positioning device of the utility model is easy and quick to operate, which reduces the surgical cost of patients and benefits more hospitals and patients.

[0018] 2. The prosthesis positioning device of the utility model adopts multiple posture measuring devices for measurement, which has high precision and avoids the cartilage that cannot be developed in CT images, making 3D printing design and high-precision positioning with the help of CT images practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a positioning component of a prosthesis positioning device used in an embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a guide plate of a prosthesis positioning device used in an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a display component of a prosthesis positioning device used in an embodiment of the utility model;

[0022] Figure 4 It is a schematic structural diagram of a fixing component of a prosthesis positioning device used in an embodiment of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the operating components of the prosthesis positioning device provided in an embodiment of the utility model.

[0024] The above drawings include the following reference numerals:

[0025] 1. Measuring assembly; 11. First attitude measuring device; 12. Second attitude measuring device; 2. Positioning assembly; 21. First fixing part; 22. Guide plate; 221. Limiting part; 222. Mounting part; 2221. Mounting groove; 2222. Mounting hole; 223. Guide part; 2231. Guide groove; 23. Measuring rod; 231. Mounting protrusion; 3. Display assembly; 30. Display part; 31. Display; 32. Second fixing part; 33. Fourth fixing part; 34. Support part; 341. Support surface; 35. Power supply compartment; 36. Fixing part; 361. Connecting plate; 362. Fixing plate; 3621. Fixing hole; 363. Connecting rod; 4. Operating assembly; 41. Third fixing part; 42. Holder; 421. Prosthesis; 43. Connecting part. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0027] According to an embodiment of the present utility model, a prosthesis positioning device is provided. Figures 1 to 5 , including: a measuring component 1, the measuring component 1 includes a first attitude detector 11 and a second attitude detector 12, and the first attitude detector 11 is connected to the second attitude detector 12 by signal; a positioning component 2, the positioning component 2 is in contact with the part to be measured, and the positioning component 2 includes a first fixing portion 21 for fixing the first attitude detector 11; a display component 3, the display component 3 is fixedly connected to the part to be operated, the display component 3 has a display 31, the display 31 is used to display the anteversion angle and abduction angle of the prosthesis, and the display component 3 is provided with a second fixing portion 32, and the second fixing portion 32 is used to fix the second attitude detector 12; an operating component 4, the operating component 4 is used to install the prosthesis, and the operating component 4 is relatively movably provided with a third fixing portion 41 for fixing the first attitude detector 11; a computing module, the computing module is connected to the first attitude detector 11 and the second attitude detector 12 by signal; the computing module is used to calculate the pelvic reference plane; the computing module is used to calculate the anteversion angle and abduction angle of the first attitude detector 11 on the third fixing portion 41 relative to the pelvic reference plane; the computing module is connected to the display component 3 by signal.

[0028] With the above arrangement, when installing the prosthesis, first use the positioning component 2 to abut against the part to be operated, adjust the position of the positioning component 2 in the part to be operated and place the first posture meter 11 in the first fixing part 21, and place the second posture meter 12 in the second fixing part 32. The calculation module receives the signals sent by the first posture meter 11 and the second posture meter 12 to calculate the pelvic reference plane where the part to be operated is located. Then, the first posture meter 11 is taken out of the first fixing part 21 and placed in the third fixing part 41. The positioning component 2 is removed from the part to be operated, and the operating component 4 is placed in the part to be operated, and the third fixing part 41 is connected to the operating component 4. At this time, the calculation module can calculate the real-time anteversion angle and abduction angle of the operating component 4 by receiving the signals of the first posture meter 11 and the second posture meter 12, and display the calculation results in the display component 3, so that the operator can observe at any time, thereby solving the technical problem of the inaccurate placement angle of the acetabular cup prosthesis in the related art.

[0029] Specifically, the calculation module is signal-connected to both the first attitude meter 11 and the second attitude meter 12; when the first attitude meter 11 is connected to the first fixing part 21 and the second attitude meter 12 is connected to the second fixing part 32, the calculation module is used to calculate the pelvic reference plane; when the first attitude meter 11 is connected to the third fixing part 41 and the second attitude meter 12 is connected to the second fixing part 32, the calculation module is used to calculate the anteversion angle and abduction angle of the first attitude meter 11 on the third fixing part 41 relative to the pelvic reference plane; the calculation module is signal-connected to the display component 3.

[0030] In the prosthesis positioning device of this embodiment, see Figure 1 to Figure 2 The positioning assembly 2 includes a guide plate 22, which includes: a limiting portion 221, which abuts against the part to be operated to determine the posture of the positioning assembly 2; a mounting portion 222, which is connected to the limiting portion 221, and is provided with a mounting groove 2221, and the mounting portion 222 protrudes from the surface of the guide plate 22; a guiding portion 223, which penetrates the guiding portion 223, and is provided with a guiding groove 2231, and the extension direction of the guiding groove 2231 is parallel to the extension direction of the mounting groove 2221. In this way, the guide plate 22 is rotated to make the limiting portion 221 engage with the part to be operated, and at the same time, the guiding portion 223 guides the guide plate 22 to complete the posture adjustment of the guide plate 22.

[0031] Specifically, the guide plate 22 is designed based on the CT image of the part to be operated, and the shape of the guide plate 22 matches the shape of the part to be operated.

[0032] Specifically, the limiting portion 221 is engaged with the horseshoe socket of the part to be operated.

[0033] Specifically, the opening direction of the guide groove 2231 on the guide portion 223 is the same as the opening direction of the acetabulum of the part to be operated.

[0034] In the prosthesis positioning device of this embodiment, see Figure 2 A mounting hole 2222 is provided on the side wall of the mounting groove 2221 , and the mounting hole 2222 is connected to the outside of the mounting groove 2221 .

[0035] In the prosthesis positioning device of this embodiment, see Figure 1 to Figure 2 The positioning assembly 2 further comprises a measuring rod 23, a side wall of which is provided with a mounting protrusion 231, which is engaged with the mounting hole 2222 to mount the measuring rod 23 in the mounting groove 2221, and an end of the measuring rod 23 away from the mounting protrusion 231 is provided with a first fixing portion 21 for fixing the first attitude measuring device 11. In this way, the mounting protrusion 231 on the measuring rod 23 is engaged with the mounting hole 2222 on the mounting groove 2221, so that the measuring rod 23 is mounted in the mounting groove 2221. When the measuring rod 23 needs to be removed, the mounting protrusion 231 is pressed to disengage it from the mounting hole 2222, and the measuring rod 23 can be pulled out.

[0036] In the prosthesis positioning device of this embodiment, see Figure 4 The display assembly 3 further includes a fourth fixing portion 33, which is arranged on the display assembly 3 at an interval from the second fixing portion 32, and the fourth fixing portion 33 is used to place the first attitude detector 11. In this way, the first attitude detector 11 can be stored in the fourth fixing portion 33 after use, so as to reuse and store the first attitude detector 11.

[0037] In the prosthesis positioning device of this embodiment, see Figure 4 The display assembly 3 is also provided with a power supply compartment 35, which is used to install a power supply. In this way, before starting the prosthesis positioning, it is necessary to first put a power supply into the power supply compartment 35 to supply power to the display assembly 3.

[0038] Preferably, the power supply compartment 35 is disposed between the second fixing portion 32 and the fourth fixing portion 33 .

[0039] In the prosthesis positioning device of this embodiment, see Figure 4The display assembly 3 further includes: a display assembly 30, on which the display 31 and the second fixing portion 32 are both arranged; a support assembly 34, which is connected to the display assembly 30 and on which a support surface 341 for fitting with the part to be installed is arranged; and a fixing assembly 36, which is arranged on a side of the display assembly 3 away from the display 31 and is used to fix the display assembly 3 on the part to be installed. In this way, the fixing assembly 36 fixes the display assembly 30 on the part to be installed. Since the second attitude detector 12 is fixed on the display assembly 30, the position of the second attitude detector 12 is also fixed, so that the measurement result is more accurate. At the same time, the support assembly 34 fits tightly with the part to be installed, so that the installation of the display assembly 30 is more stable.

[0040] In the prosthesis positioning device of this embodiment, see Figure 4 The fixing component 36 includes: a connecting plate 361, which is connected to the side of the display assembly 3 away from the display 31; a fixing plate 362, which is provided with a fixing hole 3621 for the fixing member to pass through; and a connecting rod 363, which connects the connecting plate 361 and the fixing plate 362. In this way, the fixing member passes through the fixing hole 3621 to fix the fixing plate 362. Since the fixing plate 362 is connected to the display assembly 3, the display assembly 30 is fixed to the position to be installed through the cooperation of the fixing member and the fixing component 36.

[0041] Specifically, there are a plurality of fixing holes 3621 , and the fixing members are arranged in one-to-one correspondence with the fixing holes 3621 , and the plurality of fixing members are fixed at intervals on the location to be installed.

[0042] Preferably, the fixing member is a bone pin.

[0043] In some embodiments, the fixing component 36 can also be fixed to the location to be installed by adhesive tape.

[0044] In the prosthesis positioning device of this embodiment, see Figure 3 , the support surface 341 is a curved surface. In this way, the support surface 341 can better fit the part to be installed, making the display assembly 3 more stable on the part to be installed.

[0045] In the prosthesis positioning device of this embodiment, see Figure 5The operation assembly 4 further includes: a file rod, which is used to adjust the shape of the part to be operated; a holder 42, which is used to clamp the prosthesis 42; a connecting component 43, which is detachably connected to the file rod and the holder 42, and a third fixing portion 41 is arranged on the connecting component 43. In this way, when the connecting component 43 is connected to the file rod, the real-time anteversion angle and abduction angle of the file rod can be measured, so that the operator can adjust the grinding angle of the file rod in real time; when the connecting component 43 is connected to the holder 42, the real-time anteversion angle and abduction angle of the holder 42 can be measured, so that the operator can adjust the installation angle of the prosthesis.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0048] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0049] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0050] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A prosthesis positioning device, characterized in that: include: A measuring component (1), the measuring component (1) comprising a first attitude measuring device (11) and a second attitude measuring device (12), the first attitude measuring device (11) being signal-connected to the second attitude measuring device (12); A positioning component (2), the positioning component (2) being in contact with a part to be measured, the positioning component (2) comprising a first fixing portion (21) for fixing the first posture measuring device (11); a display component (3), the display component (3) being fixedly connected to the part to be installed, the display component (3) comprising a display (31), the display (31) being used to display the anteversion angle and abduction angle of the prosthesis, the display component (3) being provided with a second fixing portion (32), the second fixing portion (32) being used to fix the second posture measuring device (12); An operating component (4), the operating component (4) being used for mounting a prosthesis, the operating component (4) being relatively movably provided with a third fixing portion (41) for fixing the first posture measuring device (11); A calculation module, the calculation module being signal-connected to the first attitude detector (11) and the second attitude detector (12); the calculation module being used to calculate a pelvic reference plane; the calculation module being used to calculate an anteversion angle and an abduction angle of the first attitude detector (11) on the third fixing portion (41) relative to the pelvic reference plane; the calculation module being signal-connected to the display assembly (3).

2. The prosthesis positioning device according to claim 1, characterized in that: The positioning assembly (2) comprises a guide plate (22), and the guide plate (22) comprises: A limiting portion (221), the limiting portion (221) abutting against the part to be measured to determine the posture of the positioning component (2); A mounting portion (222), the mounting portion (222) being connected to the limiting portion (221), the mounting portion (222) being provided with a mounting groove (2221), and the mounting portion (222) being protruding from the surface of the guide plate (22); A guide portion (223), wherein the mounting portion (222) is arranged to penetrate the guide portion (223), and a guide groove (2231) is provided on the guide portion (223), wherein an extension direction of the guide groove (2231) is parallel to an extension direction of the mounting groove (2221).

3. The prosthesis positioning device according to claim 2, characterized in that: A mounting hole (2222) is provided on the side wall of the mounting groove (2221), and the mounting hole (2222) is connected to the outside of the mounting groove (2221).

4. The prosthesis positioning device according to claim 3, characterized in that: The positioning assembly (2) further comprises a measuring rod (23), a side wall of the measuring rod (23) being provided with a mounting protrusion (231), the mounting protrusion (231) being engaged with the mounting hole (2222) so as to mount the measuring rod (23) in the mounting groove (2221), and an end of the measuring rod (23) away from the mounting protrusion (231) being provided with a first fixing portion (21) for fixing the first attitude measuring device (11).

5. The prosthesis positioning device according to claim 1, characterized in that: The display assembly (3) further comprises a fourth fixing portion (33), the fourth fixing portion (33) being arranged on the display assembly (3) at an interval from the second fixing portion (32), and the fourth fixing portion (33) being used for placing the first attitude measuring device (11).

6. The prosthesis positioning device according to claim 5, characterized in that: The display assembly (3) is also provided with a power supply compartment (35), and the power supply compartment (35) is used to install a power supply.

7. The prosthesis positioning device according to claim 1, characterized in that: The display component (3) further comprises: A display component (30), the display (31) and the second fixing portion (32) being both arranged on the display component (30); A support component (34) connected to the display component (30), the support component (34) being provided with a support surface (341) for fitting with a part to be installed; A fixing component (36), the fixing component (36) being arranged on a side of the display component (3) away from the display (31), the fixing component (36) being used to fix the display component (3) on a location to be installed.

8. The prosthesis positioning device according to claim 7, characterized in that: The fixing component (36) comprises: A connecting plate (361), the connecting plate (361) being connected to a side of the display assembly (3) away from the display (31); A fixing plate (362), wherein the fixing plate (362) is provided with a fixing hole (3621), and the fixing hole (3621) is used for a fixing member to pass through; A connecting rod (363), wherein the connecting rod (363) connects the connecting plate (361) and the fixing plate (362).

9. The prosthesis positioning device according to claim 7, characterized in that: The supporting surface (341) is a curved surface.

10. The prosthesis positioning device according to claim 1, characterized in that: The operating component (4) further includes: A file rod, the file rod is used to adjust the shape of the part to be operated on; A holder (42), the holder (42) being used to clamp the prosthesis; A connecting component (43), wherein the connecting component (43) is detachably connected to the file rod and the holder (42), and the third fixing portion (41) is arranged on the connecting component (43).

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