Image positioning device for C-shaped arm

Abstract

An image positioning device used for a C-shaped arm is provided with a clamp used for an external C-shaped arm handrail, an assembly plate, a positioning ball and a locking plate used for preventing the positioning ball from moving or being dismantled in the using process, the assembly plate and the clamp are fixedly assembled, the positioning ball is detachably assembled on the assembly plate, and the locking plate is used for locking the positioning ball. The locking plate is buckled on the assembling plate, the positioning ball is partially accommodated in an accommodating cavity between the locking plate and the assembling plate, and a part of the positioning ball protrudes out of the locking plate. The image positioning device is specially arranged for positioning the C-shaped arm and can pass through a handrail of the C-shaped arm. And the positioning ball is locked between the assembling plate and the locking plate through the locking plate, so that the behaviors of mistakenly disassembling and stealing the positioning ball can be effectively prevented, and the position of the positioning ball is changed to cause recalibration operation.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an image positioning device for a C-shaped arm. Background Art

[0002] Surgical imaging localization is a method that uses medical imaging technology to assist doctors in accurately locating lesions or surgical areas during surgery. This method combines modern medical imaging technology, navigation systems, and positioning technology to improve the accuracy and safety of surgery.

[0003] At present, common image positioning devices are usually installed in surgical instruments or robotic arms, so as to locate the surgical instruments or robotic arms through the navigation system, track the current surgical position in real time, and ensure that the surgical operation is carried out according to the predetermined path, such as a calibration device and method for intraoperative image positioning disclosed in Chinese patent announcement number CN117643510A. However, C-arms are usually used in surgical operations, and C-arms rotate when working. The current image positioning devices are only applicable to surgical instruments or robotic arms, but cannot be assembled on C-arms. Therefore, the position of the C-arm cannot be located by the image positioning device.

[0004] Therefore, in view of the shortcomings of the prior art, it is necessary to provide an image positioning device for a C-arm to solve the shortcomings of the prior art. Utility Model Content

[0005] The purpose of the utility model is to avoid the shortcomings of the prior art and provide an image positioning device for a C-shaped arm. The image positioning device for a C-shaped arm can be fixed to the C-shaped arm and position the C-shaped arm.

[0006] The above-mentioned purpose of the utility model is achieved through the following technical measures:

[0007] Provided is an image positioning device for a C-arm, comprising a clamp for an external C-arm armrest, an assembly plate, a positioning ball and a locking plate for preventing the positioning ball from moving or being removed during use, wherein the assembly plate is fixedly assembled with the clamp, the positioning ball is detachably assembled on the assembly plate, the locking plate is buckled on the assembly plate, the positioning ball is partially accommodated in an accommodating cavity between the locking plate and the assembly plate, and a portion of the positioning ball protrudes from the locking plate.

[0008] Preferably, the locking plate is provided with a through hole whose wall surface matches the contour of the positioning ball, and the positioning ball protrudes out of the locking plate through the through hole.

[0009] The diameter of the positioning ball is defined as D, the maximum height protruding from the locking plate is defined as A, and A>0.5D.

[0010] Preferably, the locking plate is provided with a groove for reducing weight, the positioning ball is located at the periphery of the groove, and the opening of the groove faces the assembly plate to define a protruding side of the assembly plate as the front of the image positioning device.

[0011] The image positioning device for a C-arm of the utility model is also provided with a first fixing member for fixing the locking plate to the assembly plate and a second fixing member for fixing the clamp to the assembly plate, one end of the first fixing member passes through the locking plate and is fixed to the rear end face of the locking plate, and one end of the second fixing member passes through the clamp and is fixed to the assembly plate.

[0012] Preferably, the material of the locking plate and the material of the locking plate are both polyetheretherketone.

[0013] Preferably, there are four positioning balls, and the distances between the positioning balls and other positioning balls are different.

[0014] Preferably, the above-mentioned clamp is provided with a pair of clamps and a third fixing member, and the clamps are respectively defined as a first clamp and a second clamp, the second clamp is assembled with the assembly plate, one end of the first clamp is hinged with one end of the second clamp, and the other end of the first clamp is fixed with the other end of the second clamp via the third fixing member.

[0015] Preferably, the middle portion of the first clamping body and the middle portion of the second clamping body are both provided with an arc-shaped groove for clamping with an external C-shaped arm armrest.

[0016] Preferably, the above-mentioned second clamp is provided with a first fixing hole and a second fixing hole, and the second fixing hole is located in the arc-shaped groove corresponding to the second clamp, the first fixing hole is located on the rear end face of the second clamp, one end of the first fixing member passes through the first fixing hole and the locking plate in sequence, and one end of the second fixing member passes through the second fixing hole.

[0017] When the first clamp body and the second clamp body are assembled with the external C-shaped arm armrest, the first clamp body covers the rear of the first fixing hole, and the external C-shaped arm armrest covers the rear of the second fixing hole.

[0018] Preferably, the clamp body is provided with a first sub-body, a second sub-body and a third sub-body, the second sub-body of the same clamp body is integrally connected with the second sub-body and the third sub-body respectively, and the second sub-body is perpendicular to the second sub-body and the third sub-body.

[0019] Preferably, the first sub-body of the first clamp is hinged to the first sub-body of the second clamp, and the third sub-body of the first clamp is hinged to the third sub-body of the second clamp.

[0020] Preferably, the second sub-body of the first clamping body and the second sub-body of the second clamping body are connected by the third fixing member.

[0021] Preferably, the positioning ball is a reflective ball or a magnetic sensor.

[0022] The utility model is an image positioning device for a C-arm, which is provided with a clamp for an external C-arm armrest, an assembly plate, a positioning ball and a locking plate for preventing the positioning ball from moving or being removed during use. The assembly plate is fixedly assembled with the clamp, the positioning ball is detachably assembled on the assembly plate, the locking plate is buckled on the assembly plate, the positioning ball is partially accommodated in the accommodating cavity between the locking plate and the assembly plate, and a part of the positioning ball protrudes from the locking plate. The image positioning device of the utility model is specially designed for C-arm positioning and can be used on a C-arm armrest. Moreover, the positioning ball is locked between the assembly plate and the locking plate by the locking plate, which can effectively prevent the positioning ball from being removed by mistake or stolen, thereby changing the position of the positioning ball and causing a recalibration operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described with reference to the accompanying drawings, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0024] Figure 1 It is a structural schematic diagram of the image positioning device of Example 1.

[0025] Figure 2 for Figure 1 Schematic diagram from another angle.

[0026] Figure 3 for Figure 1 Schematic diagram from another angle.

[0027] Figure 4 for Figure 1 Schematic diagram from another angle.

[0028] Figure 5 for Figure 4 Section intention in the "AA" direction.

[0029] Figure 6 Schematic diagram of the locking plate.

[0030] Figure 7 It is a schematic diagram of the structure of the assembly plate and the positioning ball.

[0031] Figure 8 Schematic diagram of the structure of the image positioning device of Example 2.

[0032] Fig. 9 for Figure 8 Schematic diagram from another angle.

[0033] Fig.10 Schematic diagram of the structure opened for the fixture.

[0034] Fig.11 This is a schematic diagram of the structure in which the first clamp is hidden.

[0035] Fig.12 for Fig.11 Schematic diagram from another angle.

[0036] Fig.13 for Fig.12 Section intention in the "BB" direction.

[0037] exist Figures 1 to 13 Including:

[0038] The clamp 100, the third fixing member 110,

[0039] Clamp body 120,

[0040] The first clamping body 121,

[0041] The second clamping body 122, the first fixing hole 1221, the second fixing hole 1222,

[0042] Arc groove 123,

[0043] The first sub-body 124, the second sub-body 125, the third sub-body 126,

[0044] Assembly plate 200,

[0045] Set piece 300,

[0046] The locking plate 400, the through hole 410, the groove 420,

[0047] A first fixing member 500 , a second fixing member 600 , and a C-shaped arm armrest 700 . DETAILED DESCRIPTION

[0048] The technical solution of the utility model is further described in conjunction with the following embodiments.

[0049] Example 1

[0050] An image positioning device for a C-arm, such as Figures 1 to 4As shown, a fixture 100 for an external C-shaped armrest 700, an assembly plate 200, a positioning ball 300 and a locking plate 400 for preventing the positioning ball 300 from moving or being removed during use are provided. The assembly plate 200 is fixedly assembled with the fixture 100, the positioning ball 300 is detachably assembled on the assembly plate 200, the locking plate 400 is buckled on the assembly plate 200, the positioning ball 300 is partially accommodated in the accommodation cavity between the locking plate 400 and the assembly plate 200, and a part of the positioning ball 300 protrudes from the locking plate 400. The positioning ball 300 is a reflective ball or a magnetic sensor.

[0051] The locking plate 400 is provided with a through hole 410 whose wall surface matches the contour of the positioning ball 300, and the positioning ball 300 protrudes from the locking plate 400 through the through hole 410; the diameter of the positioning ball 300 is defined as D, and the maximum height protruding from the locking plate 400 is defined as A, and A>0.5D exists. Figure 5 .

[0052] It should be noted that in actual operation, the position of the positioning ball 300 needs to be very precise. When the positioning ball 300 moves slightly, it needs to be repositioned. The currently common positioning ball 300 is threaded and small in size. Therefore, if the assembly plate 200 is directly assembled with the positioning ball 300 and then fixed on the external C-arm armrest 700, the positioning ball 300 is very likely to be accidentally touched, moved or removed intentionally or unintentionally. The inner wall contour of the through hole 410 of the utility model and the maximum height setting of the positioning ball 300 protruding from the locking plate 400 are used to prevent the positioning ball 300 from being directly removed without removing the locking plate 400.

[0053] The locking plate 400 is provided with a groove 420 for reducing weight, such as Figure 6 , the positioning ball 300 is located at the outer periphery of the groove 420, and the opening of the groove 420 faces the assembly plate 200. The material of the locking plate 400 and the material of the locking plate 400 are both polyetheretherketone.

[0054] It should be noted that, because the C-arm needs to rotate, when the image positioning device is heavy, it will increase the weight of the C-arm and affect the rotation of the C-arm. In addition, the utility model reduces the overall weight through the groove 420, and the image positioning device is symmetrically arranged on the C-arm in actual use, so it will not affect the rotation of the C-arm. In addition, the locking plate 400 and the locking plate 400 of the utility model are both made of polyetheretherketone (PEEK), so the overall volume is light and easy to disinfect.

[0055] The protruding side of the assembly plate 200 is defined as the front of the image positioning device, and the image positioning device is also provided with a first fixing member 500 for fixing the locking plate 400 to the assembly plate 200 and a second fixing member 600 for fixing the fixture 100 to the assembly plate 200. One end of the first fixing member 500 passes through the locking plate 400 and is fixed to the rear end face of the locking plate 400, and one end of the second fixing member 600 passes through the fixture 100 and is fixed to the assembly plate 200.

[0056] It should be noted that the assembly method of the first fixing member 500 of the utility model keeps the front end of the locking plate 400 flat, and there are no other protrusions or recessed holes except the positioning ball 300, so as to facilitate cleaning and disinfection. More importantly, when the image positioning device is in normal use, the front end surface of the locking plate 400 is facing the outside of the C-shaped arm, while the assembly plate 200 is facing the C-shaped arm, so when the image positioning device is in normal use, it is difficult to disassemble the locking plate 400 alone, which increases the difficulty of disassembling the locking plate 400 and effectively prevents the positioning ball 300 from moving and being stolen.

[0057] There are four positioning balls 300, and the distances between the positioning balls 300 and other positioning balls 300 are different. Figure 7 It should be noted that the distances between the positioning ball 300 and other positioning balls 300 are different for positioning.

[0058] The image positioning device is specially designed for C-arm positioning and can be placed on the C-arm armrest 700. The positioning ball 300 is locked between the assembly plate 200 and the locking plate 400 by the locking plate 400, which can effectively prevent the positioning ball 300 from being accidentally dismantled or stolen, thereby changing the position of the positioning ball 300 and causing a recalibration operation.

[0059] Example 2

[0060] An image positioning device for a C-arm, such as Figures 8 to 10 , other features are the same as those of Example 1, and also have the following technical features: the clamp 100 is provided with a pair of clamp bodies 120 and a third fixing member 110, the clamp bodies 120 are respectively defined as a first clamp body 121 and a second clamp body 122, the second clamp body 122 is assembled with the assembly plate 200, one end of the first clamp body 121 is hinged to one end of the second clamp body 122, and the other end of the first clamp body 121 is fixed to the other end of the second clamp body 122 by the third fixing member 110; the middle part of the first clamp body 121 and the middle part of the second clamp body 122 are both provided with an arc groove 123 for clamping with the external C-arm armrest 700.

[0061] The second clamping body 122 is provided with a first fixing hole 1221 and a second fixing hole 1222, and the second fixing hole 1222 is located in the arc-shaped groove 123 corresponding to the second clamping body 122, and the first fixing hole 1221 is located at the rear end surface of the second clamping body 122. Fig.11 , one end of the first fixing member 500 passes through the first fixing hole 1221 and the locking plate 400 in sequence, and one end of the second fixing member 600 passes through the second fixing hole 1222; when the first clamp body 121 and the second clamp body 122 are assembled with the external C-shaped arm armrest 700, the first clamp body 121 is located behind the first fixing hole 1221, and the external C-shaped arm armrest 700 is located behind the second fixing hole 1222, as shown in FIG. Fig.12 and Fig.13 .

[0062] It should be noted that the utility model can realize the clamping assembly of the clamp 100 and the external C-arm armrest 700 through a third fixing member 110. More importantly, after the second clamp 122 and the first clamp 121 are assembled, the first fixing member 500, the second fixing member 600, the first fixing hole 1221 and the second fixing hole 1222 are all hidden between the first clamp 121 and the second clamp 122 and will not be exposed. The whole is simple and easy to clean and disinfect. Moreover, the first fixing member 500 and the second fixing member 600 can only be disassembled when the first clamp 121 and the second clamp 122 are opened. That is to say, when the image positioning device is assembled on the external C-arm armrest 700, the positioning ball 300 cannot be removed separately. Therefore, the positioning ball 300 of this embodiment has a better anti-theft effect.

[0063] The clamp body 120 is provided with a first sub-body 124, a second sub-body 125 and a third sub-body 126. The second sub-body 125 of the same clamp body 120 is integrally connected with the second sub-body 125 and the third sub-body 126 respectively, and the second sub-body 125 is perpendicular to the second sub-body 125 and the third sub-body 126; the first sub-body 124 of the first clamp body 121 is hinged with the first sub-body 124 of the second clamp body 122, the third sub-body 126 of the first clamp body 121 is hinged with the third sub-body 126 of the second clamp body 122, and the second sub-body 125 of the first clamp body 121 and the second sub-body 125 of the second clamp body 122 are connected through the third fixing member 110.

[0064] It should be noted that the purpose of the three sub-bodies of the clamp body 120 of this embodiment is to reduce the overall mass of the clamp 100 while allowing the clamp body 120 to extend to the edge of the assembly plate 200, thereby setting the first fixing member 500 at the edge of the locking plate 400 and the assembly plate 200, thereby improving the fixing stability of both the locking plate 400 and the assembly plate 200.

[0065] Compared with the first embodiment, the positioning ball 300 of the present embodiment has a better anti-theft effect.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. An image positioning device for a C-arm, characterized in that: A clamp, an assembly plate, a positioning ball and a locking plate for preventing the positioning ball from moving or being removed during use are provided for an external C-arm armrest. The assembly plate is fixedly assembled to the clamp, the positioning ball is detachably assembled to the assembly plate, the locking plate is buckled to the assembly plate, the positioning ball is partially accommodated in an accommodating cavity between the locking plate and the assembly plate, and a portion of the positioning ball protrudes from the locking plate.

2. The image positioning device for a C-arm according to claim 1, characterized in that: The locking plate is provided with a through hole whose wall surface matches the contour of the positioning ball, and the positioning ball protrudes from the locking plate through the through hole; The diameter of the positioning ball is defined as D, the maximum height protruding from the locking plate is defined as A, and A>0.5D.

3. The image positioning device for a C-arm according to claim 2, characterized in that: The locking plate is provided with a groove for reducing weight, the positioning ball is located at the outer periphery of the groove, and the opening of the groove faces the assembly plate.

4. The image positioning device for a C-arm according to claim 3, characterized in that: The protruding side of the assembly plate is defined as the front of the image positioning device, A first fixing member for fixing the locking plate to the assembly plate and a second fixing member for fixing the clamp to the assembly plate are also provided, one end of the first fixing member passes through the locking plate and is fixed to the rear end surface of the locking plate, and one end of the second fixing member passes through the clamp and is fixed to the assembly plate.

5. The image positioning device for a C-arm according to any one of claims 1 to 4, characterized in that: The material of the locking plate and the material of the locking plate are both polyetheretherketone.

6. The image positioning device for a C-arm according to any one of claims 1 to 4, characterized in that: There are four positioning balls, and the distances between the positioning balls and other positioning balls are different.

7. The image positioning device for a C-arm according to claim 4, characterized in that: The clamp is provided with a pair of clamps and a third fixing member, the clamps are respectively defined as a first clamp and a second clamp, the second clamp is assembled with the assembly plate, one end of the first clamp is hinged with one end of the second clamp, and the other end of the first clamp is fixed with the other end of the second clamp via the third fixing member; The middle part of the first clamp body and the middle part of the second clamp body are both provided with an arc-shaped groove for clamping with the external C-shaped arm armrest.

8. The image positioning device for a C-arm according to claim 7, characterized in that: The second clamping body is provided with a first fixing hole and a second fixing hole, and the second fixing hole is located in the arc-shaped groove corresponding to the second clamping body, the first fixing hole is located on the rear end surface of the second clamping body, one end of the first fixing member passes through the first fixing hole and the locking plate in sequence, and one end of the second fixing member passes through the second fixing hole; When the first clamp body and the second clamp body are assembled with the external C-shaped arm armrest, the first clamp body covers the rear of the first fixing hole, and the external C-shaped arm armrest covers the rear of the second fixing hole.

9. The image positioning device for a C-arm according to claim 8, characterized in that: The clamp body is provided with a first sub-body, a second sub-body and a third sub-body, the second sub-body of the same clamp body is integrally connected with the second sub-body and the third sub-body respectively, and the second sub-body is perpendicular to the second sub-body and the third sub-body; The first sub-body of the first clamp is hinged to the first sub-body of the second clamp, and the third sub-body of the first clamp is hinged to the third sub-body of the second clamp, The second sub-body of the first clamping body and the second sub-body of the second clamping body are connected through the third fixing member.

10. The image positioning device for a C-arm according to claim 1, characterized in that: The positioning ball is a reflective ball or a magnetic sensor.

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