An angle-adjustable puncture positioning bracket

Abstract

This utility model discloses an angle-adjustable puncture positioning bracket. One end of its angle adjustment component is connected to an adjustment arm, and the other end is connected to a guide plate connecting plate. The guide plate connecting plate has a mounting portion for connecting a puncture template. One end of the first adjustment plate and one end of the second adjustment plate of the angle adjustment component are rotatably connected via a rotating shaft to achieve angle adjustment between the first and second adjustment plates. A first locking member is used for locking and positioning the first and second adjustment plates. The other end of the first adjustment plate is inserted into the guide plate connecting plate via a connecting shaft. The connecting shaft has at least two locking portions spaced apart on its outer surface around its central axis. The second locking member locks into the corresponding locking portions, achieving locking and positioning of the first adjustment plate and the guide plate connecting plate in the direction around the central axis of the connecting shaft. The other end of the second adjustment plate is fixedly connected to the end of the adjustment arm. This utility model can meet the adjustment needs of various puncture angles, improving the efficiency and accuracy of posture adjustment.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an angle-adjustable puncture positioning stent. Background Technology

[0002] Minimally invasive tumor treatment is gaining increasing attention, and puncture is a commonly used diagnostic and treatment technique in tumor treatment. In order to achieve good treatment results while protecting important tissues and organs, it is necessary to ensure the accuracy of the puncture position and depth of the puncture needle. Usually, a puncture guide template is used for puncture. However, the existing puncture guide template positioning stent has a limited range of degrees of freedom adjustment and cannot meet the surgical requirements of different body parts and different puncture angles. Therefore, it is necessary to design a positioning stent structure that can achieve multi-degree-of-freedom adjustment. Utility Model Content

[0003] The purpose of this invention is to provide an angle-adjustable puncture positioning bracket to address the shortcomings and unmet technical requirements of existing technologies.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An angle-adjustable puncture positioning bracket includes an adjusting arm, an angle adjusting component, and a guide plate connecting plate. One end of the angle adjusting component is connected to the adjusting arm, and the other end of the angle adjusting component is connected to the guide plate connecting plate. The guide plate connecting plate is provided with a mounting part for connecting a puncture template.

[0006] The angle adjustment assembly includes a first adjustment plate, a second adjustment plate, a first locking member, and a second locking member. One end of the first adjustment plate and one end of the second adjustment plate are rotatably connected via a rotating shaft to achieve angle adjustment between the first and second adjustment plates. The first locking member is used for locking and positioning the first and second adjustment plates. The other end of the first adjustment plate is inserted into a guide plate connecting plate via a connecting shaft to achieve angle adjustment between the first adjustment plate and the guide plate connecting plate. The central axis of the connecting shaft is perpendicular to the central axis of the rotating shaft. The connecting shaft has at least two locking parts spaced apart on its outer surface around its central axis. The second locking member locks into the corresponding locking part to achieve locking and positioning of the first adjustment plate and the guide plate connecting plate in the direction around the central axis of the connecting shaft. The other end of the second adjustment plate is fixedly connected to the end of the adjustment arm.

[0007] Preferably, the connecting shaft is fixed or integrally disposed at the end of the first adjusting plate, the guide plate connecting plate is provided with a socket for the connecting shaft to be inserted, the locking part is a locking plane disposed on the outer side of the connecting shaft, and two adjacent locking planes are arranged at a fixed included angle. The guide plate connecting plate is also provided with a first threaded hole communicating with the socket, the central axis of the first threaded hole is perpendicular to the central axis of the socket, and the second locking member is threadedly engaged with the first threaded hole. When the second locking member is tightened, the end of the second locking member can press against the corresponding locking plane to achieve locking and positioning of the first adjusting plate and the guide plate connecting plate.

[0008] When there are two or four locking parts, the two adjacent locking planes are arranged at a 90° angle. When there are three or six locking parts, the two adjacent locking planes are arranged at a 60° angle.

[0009] Preferably, the opposite end faces of the first and second adjusting plates are meshed with each other by a wave-shaped gear ring. The first adjusting plate has a protrusion or groove on the side near the second adjusting plate, and the corresponding second adjusting plate has a groove or protrusion. The protrusion and groove are interlocked to form a rotating shaft. The center of the first adjusting plate has a through hole or a second threaded hole, and the center of the second adjusting plate has a second threaded hole or a through hole. The first locking member passes through the through hole and is threadedly engaged with the second threaded hole. When the first locking member is tightened, the locking and positioning between the first and second adjusting plates is achieved.

[0010] Preferably, the guide plate connecting plate has a main body, which is connected to the mounting part through a bending part. When the mounting part of the guide plate connecting plate is connected to the puncture template, the height of the main body of the guide plate connecting plate is higher than the height of the puncture template. A gyroscope module is installed on the main body of the guide plate connecting plate, which is used to display the attitude angle of the guide plate connecting plate.

[0011] Preferably, the mounting part of the guide plate connecting plate is connected to a puncture template via a quick-release structure. The quick-release structure is one or a combination of a threaded structure, a snap-fit ​​structure, and a locking structure. The puncture template is a multi-channel puncture template, which has a plurality of guide holes for guiding the puncture needle. The center line of the guide hole is perpendicular to the multi-channel puncture template, and the center lines of each guide hole are parallel to each other. The guide hole is clearance-fitted with the puncture needle, and the guide holes are arranged in an array.

[0012] Preferably, when the quick-release structure is a threaded structure, the quick-release structure includes a locking bolt and a locking nut. The lower end face of the mounting part of the guide plate is provided with positioning grooves on both sides. The positioning protrusion of the piercing template is located in the positioning groove. The locking bolt passes through the guide plate and the piercing template and locks the guide plate and the piercing template in place by means of the locking nut.

[0013] Preferably, the adjusting arm has at least three degrees of freedom, enabling the guide plate connecting plate to be adjusted to any position in its working space and locked. The adjusting arm is one or more combinations of mechanical damping arm, mechanical threaded locking arm, mechanical hydraulic locking arm, serpentine locking arm, electromagnetic braking positioning bracket, pneumatic braking positioning bracket, and hydraulic braking positioning bracket.

[0014] Preferably, when the adjusting arm is a mechanical hydraulic locking arm, the mechanical hydraulic locking arm includes a first positioning rod, a second positioning rod, and an adjusting bracket. The adjusting bracket includes a first connecting rod and a second connecting rod, which are connected by a rotary hinge. The ends of the first connecting rod and the second connecting rod are respectively connected to the first positioning rod and the second positioning rod through ball joints. When the handle located on the rotary hinge is tightened, locking of all degrees of freedom of the mechanical hydraulic locking arm can be achieved.

[0015] Preferably, the end of the first positioning rod away from the guide plate connecting plate is provided with a locking structure or base plate, and the end of the second positioning rod near the guide plate connecting plate is fixedly connected to the end of the second adjusting plate. The locking structure includes a locking seat and a locking screw. The locking seat is provided with a gap for the locking part of the surgical platform to be engaged. A third threaded hole is provided on one side of the locking seat. One end of the locking screw passes through the third threaded hole and is threadedly connected to the third threaded hole. The other end of the locking screw is provided with a handle for easy rotation. When the locking screw is tightened, the end face of the locking screw presses against the locking part of the surgical platform, thereby fixing the adjusting arm on the surgical platform. The plane of the base plate is perpendicular to the first positioning rod.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. The angle adjustment component of this utility model can adjust the angle of the puncture template relative to the adjustment arm and has two adjustment methods. First, the angle of the first adjustment plate and the second adjustment plate is adjusted in the direction of the central axis around the rotation axis, and then the first locking member is used to lock and position the first adjustment plate and the second adjustment plate. Second, the angle of the first adjustment plate and the guide plate connecting plate is adjusted in the direction of the central axis around the connecting axis, and then the second locking member is used to lock and position the first adjustment plate and the guide plate connecting plate by locking with the corresponding locking part, so that the puncture template is locked and positioned. This can meet the adjustment needs of various puncture angles and ensure the smooth operation of the surgery.

[0018] 2. The guide plate of this utility model is equipped with a gyroscope module, which can collect the current posture angle of the puncture template and display the posture of the puncture template on the display screen in real time, so as to facilitate the operator's observation and adjustment. The operator can adjust the posture of the puncture template by adjusting the adjustment arm and the angle adjustment component according to the display screen, thereby improving the efficiency and accuracy of posture adjustment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first adjusting plate of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the second adjusting plate of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the guide plate connecting plate of this utility model;

[0023] Figure 5 This is a schematic diagram of the assembly of the first adjusting plate and the guide plate connecting plate of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the guide plate connecting plate with gyroscope module of this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the guide plate connecting plate without the gyroscope cover of this utility model;

[0026] Figure 8 This is a schematic diagram of the puncture template of this utility model;

[0027] Figure 9 This is a schematic diagram of the structure of the adjusting arm of this utility model. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-9 An angle-adjustable puncture positioning bracket includes an adjusting arm 1, an angle adjusting component 2, and a guide plate connecting plate 3. One end of the angle adjusting component 2 is connected to the adjusting arm 1, and the other end of the angle adjusting component 2 is connected to the guide plate connecting plate 3. The guide plate connecting plate 3 is provided with an mounting part 301 for connecting a puncture template 4.

[0030] like Figure 2 , Figure 3 and Figure 6As shown, the angle adjustment assembly 2 includes a first adjustment plate 201, a second adjustment plate 202, a first locking member 203, and a second locking member 204. One end of the first adjustment plate 201 and one end of the second adjustment plate 202 are rotatably connected via a rotating shaft 5 to achieve angle adjustment between the first adjustment plate 201 and the second adjustment plate 202. The first locking member 203 is used for locking and positioning the first adjustment plate 201 and the second adjustment plate 202. The other end of the first adjustment plate 201 is inserted into the guide plate connecting plate 3 via a connecting shaft 2011 to achieve angle adjustment between the first adjustment plate 201 and the guide plate connecting plate 3. The central axis of the connecting shaft 2011 is perpendicular to the central axis of the rotating shaft 5. The connecting shaft 2011 has at least two locking parts spaced apart on its outer surface around its central axis. The second locking member 204 locks and engages with the corresponding locking parts to achieve locking and positioning of the first adjustment plate 201 and the guide plate connecting plate 3 in the direction of the central axis of the connecting shaft 2011. The other end of the second adjustment plate 202 is fixedly connected to the end of the adjustment arm 1.

[0031] like Figure 2 and Figure 4 As shown, the connecting shaft 2011 is fixed or integrally disposed at the end of the first adjusting plate 201. The guide plate connecting plate 3 is provided with an insertion hole 304 for the connecting shaft 2011 to be inserted. The locking part is a locking plane 20111 disposed on the outer side of the connecting shaft 2011. Two adjacent locking planes 20111 are arranged at a fixed included angle. The guide plate connecting plate 3 is also provided with a first threaded hole 305 communicating with the insertion hole 304. The central axis of the first threaded hole 305 is perpendicular to the central axis of the insertion hole 304. The outer side of the second locking member 204 is provided with an external thread. The second locking member 204 is threadedly engaged with the first threaded hole 305. When the second locking member 204 is tightened, the end of the second locking member 204 can press against the corresponding locking plane 20111, thereby realizing the locking and positioning of the first adjusting plate 201 and the guide plate connecting plate 3.

[0032] When there are two or four locking parts, adjacent locking planes 20111 are arranged at a 90° angle. When there are three or six locking parts, adjacent locking planes 20111 are arranged at a 60° angle. In this embodiment, two locking parts are provided on the outer surface around the central axis of the connecting shaft 2011, and adjacent locking planes 20111 are arranged at a 90° angle. Furthermore, two sets of locking parts are spaced apart along the central axis of the connecting shaft 2011, so that the two sets of locking parts respectively lock into the corresponding second locking member 204, making the connection between the first adjusting plate 201 and the guide plate connecting plate 3 more stable.

[0033] like Figure 2 and Figure 3As shown, the opposite end faces of the first adjusting plate 201 and the second adjusting plate 202 are meshed with each other by a wave-shaped gear ring 205. The first adjusting plate 201 has a protrusion or groove on the side near the second adjusting plate 202, and the corresponding second adjusting plate 202 has a groove or protrusion. The protrusion and groove are interlocked to form a rotating shaft. The center of the first adjusting plate 201 has a through hole or a second threaded hole, and the center of the second adjusting plate 202 has a second threaded hole or a through hole. The first locking member 203 passes through the through hole and is threadedly engaged with the second threaded hole. When the first locking member 203 is tightened, the locking and positioning between the first adjusting plate and the second adjusting plate 202 is achieved.

[0034] Furthermore, the first adjusting plate 201 has a groove 2012 on the side near the second adjusting plate 202, and the corresponding second adjusting plate 202 has a protrusion 2022. The protrusion 2022 and the groove 2012 are interlocked to form a rotating shaft. The center of the first adjusting plate 201 has a through hole 2013, and the center of the second adjusting plate 202 has a second threaded hole 2023. The outer side of the first locking member 203 has an external thread. The first locking member 203 passes through the through hole 2013 and is threadedly engaged with the second threaded hole 2023. When the first locking member 203 is tightened, the locking and positioning between the first adjusting plate 201 and the second adjusting plate 202 is achieved.

[0035] like Figure 5 As shown, the guide plate connecting plate 3 has a main body 302, which is connected to the mounting part 301 via a bending part 303. When the mounting part 301 of the guide plate connecting plate 3 is connected to the puncture template 4, the height of the main body 302 of the guide plate connecting plate 3 is higher than the height of the puncture template 4. When the puncture template 4 is fitted onto the patient's curved body surface, there is a certain distance between the main body of the guide plate connecting plate 3 and the patient's body surface, which will not interfere with the angle adjustment of the puncture template 4.

[0036] like Figure 6 and Figure 7 As shown, a gyroscope module 6 is mounted on the main body of the guide plate connecting plate 3. The gyroscope module 6 is used to display the attitude angle of the guide plate connecting plate 3. The gyroscope module 6 includes a gyroscope 601 and a display screen 602. The gyroscope 601 is installed in a placement slot inside the guide plate connecting plate 3, and a gyroscope cover plate 603 is installed at the bottom of the guide plate connecting plate 3. The display screen 602 is located at the opening on the upper surface of the guide plate connecting plate 3. A rechargeable battery 604 is installed inside the guide plate connecting plate 3, and the gyroscope 601 and the display screen 602 are powered by the rechargeable battery 604.

[0037] like Figures 5-7As shown, the mounting portion of the guide plate connecting plate 3 is connected to the piercing template 4 via a quick-release structure 7. The quick-release structure is one or a combination of a threaded structure, a snap-fit ​​structure, and a locking structure. When the quick-release structure 7 is a threaded structure, it includes a locking bolt 701 and a locking nut 702. Positioning grooves are provided on both sides of the lower end face of the mounting portion of the guide plate connecting plate 3. The positioning protrusion of the piercing template 4 is located in the positioning groove, and the locking bolt 701 passes through the guide plate connecting plate 3 and the piercing template 4, and the locking nut 702 locks and fixes the guide plate connecting plate 3 and the piercing template 4.

[0038] like Figure 8 As shown, the puncture template 4 is a multi-channel puncture template. The multi-channel puncture template is provided with a plurality of guide holes 401 for guiding the puncture needle. The center line of the guide hole 401 is perpendicular to the multi-channel puncture template, and the center lines of each guide hole 401 are parallel to each other. The guide hole 401 is in clearance fit with the puncture needle, and the guide holes 401 are arranged in an array.

[0039] like Figure 9 As shown, the adjusting arm 1 has at least 3 degrees of freedom, enabling the guide plate connecting plate 3 to be adjusted to any position in its working space and locked. The adjusting arm 1 is one or more combinations of mechanical damping arm, mechanical threaded locking arm, mechanical hydraulic locking arm, serpentine locking arm, electromagnetic braking positioning bracket, pneumatic braking positioning bracket, and hydraulic braking positioning bracket.

[0040] When the adjusting arm 1 is a mechanical hydraulic locking arm, the mechanical hydraulic locking arm includes a first positioning rod 101, a second positioning rod 102 and an adjusting bracket. The adjusting bracket includes a first connecting rod 103 and a second connecting rod 104. The first connecting rod 103 and the second connecting rod 104 are connected by a rotary hinge 105. The ends of the first connecting rod 103 and the second connecting rod 104 are respectively connected to the first positioning rod 101 and the second positioning rod 102 through ball joints 106. When the handle 107 located on the rotary hinge is tightened, the locking of all degrees of freedom of the mechanical hydraulic locking arm can be achieved.

[0041] The end of the first positioning rod 101 away from the guide plate connecting plate 3 is provided with a locking structure. The end of the second positioning rod 102 near the guide plate connecting plate 3 is fixedly connected to the end of the second adjusting plate 202. The locking structure includes a locking seat 108 and a locking screw 109. The locking seat 108 is provided with a gap for the locking part of the surgical platform to be engaged. A third threaded hole is provided on one side of the locking seat 108. One end of the locking screw 109 passes through the third threaded hole and is threadedly connected to the third threaded hole. The other end of the locking screw 109 is provided with a handle for easy rotation. When the locking screw 109 is tightened, the end face of the locking screw 109 presses against the locking part of the surgical platform, thereby fixing the adjusting arm 1 on the surgical platform.

[0042] As an alternative, the end of the first positioning rod 101 away from the guide plate connecting plate 3 is provided with a base plate. The plane of the base plate is perpendicular to the first positioning rod 101. During puncture treatment, the base plate is directly pressed onto the surgical platform by the human body to fix the base plate.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An angle-adjustable puncture positioning support characterized by, It includes an adjusting arm, an angle adjusting assembly, and a guide plate connecting plate. One end of the angle adjusting assembly is connected to the adjusting arm, and the other end of the angle adjusting assembly is connected to the guide plate connecting plate. The guide plate connecting plate is provided with a mounting part for connecting a puncture template. The angle adjustment assembly includes a first adjustment plate, a second adjustment plate, a first locking member, and a second locking member. One end of the first adjustment plate and one end of the second adjustment plate are rotatably connected via a rotating shaft to achieve angle adjustment between the first and second adjustment plates. The first locking member is used for locking and positioning the first and second adjustment plates. The other end of the first adjustment plate is inserted into a guide plate connecting plate via a connecting shaft to achieve angle adjustment between the first adjustment plate and the guide plate connecting plate. The central axis of the connecting shaft is perpendicular to the central axis of the rotating shaft. The connecting shaft has at least two locking parts spaced apart on its outer surface around its central axis. The second locking member locks into the corresponding locking part to achieve locking and positioning of the first adjustment plate and the guide plate connecting plate in the direction around the central axis of the connecting shaft. The other end of the second adjustment plate is fixedly connected to the end of the adjustment arm.

2. The angle-adjustable puncture positioning bracket according to claim 1, characterized in that, The connecting shaft is fixed or integrally disposed at the end of the first adjusting plate. The guide plate connecting plate is provided with a socket for the connecting shaft to be inserted. The locking part is a locking plane disposed on the outer side of the connecting shaft. Two adjacent locking planes are arranged at a fixed angle. The guide plate connecting plate is also provided with a first threaded hole communicating with the socket. The central axis of the first threaded hole is perpendicular to the central axis of the socket. The second locking member is threadedly engaged with the first threaded hole. When the second locking member is tightened, the end of the second locking member can press against the corresponding locking plane to achieve locking and positioning of the first adjusting plate and the guide plate connecting plate.

3. An angle adjustable puncture positioning support according to claim 2, characterized in that, When there are two or four locking parts, the two adjacent locking planes are arranged at a 90° angle. When there are three or six locking parts, the two adjacent locking planes are arranged at a 60° angle.

4. The angle adjustable puncture positioning support according to claim 1, wherein, The opposing end faces of the first and second adjusting plates are meshed with each other by a wave-shaped gear ring. The first adjusting plate has a protrusion or groove on the side near the second adjusting plate, and the corresponding second adjusting plate has a groove or protrusion. The protrusion and groove are interlocked to form a rotating shaft. The center of the first adjusting plate has a through hole or a second threaded hole, and the center of the second adjusting plate has a second threaded hole or a through hole. The first locking member passes through the through hole and is threadedly engaged with the second threaded hole. When the first locking member is tightened, the locking and positioning between the first and second adjusting plates is achieved.

5. The angle adjustable puncture positioning support according to claim 1, wherein, The guide plate connecting plate has a main body, which is connected to the mounting part through a bending part. When the mounting part of the guide plate connecting plate is connected to the puncture template, the height of the main body of the guide plate connecting plate is higher than the height of the puncture template. A gyroscope module is installed on the main body of the guide plate connecting plate, which is used to display the attitude angle of the guide plate connecting plate.

6. The angle adjustable puncture positioning support according to claim 1, wherein, The mounting part of the guide plate is connected to a puncture template via a quick-release structure. The quick-release structure is one or a combination of a threaded structure, a snap-fit ​​structure, and a locking structure. The puncture template is a multi-channel puncture template, which has several guide holes for guiding the puncture needle. The center line of the guide hole is perpendicular to the multi-channel puncture template, and the center lines of each guide hole are parallel to each other. The guide hole is clearance-fitted with the puncture needle, and the guide holes are arranged in an array.

7. An angle adjustable puncture positioning support according to claim 6, characterized in that, When the quick-release structure is a threaded structure, the quick-release structure includes a locking bolt and a locking nut. The lower end face of the mounting part of the guide plate is provided with positioning grooves on both sides. The positioning protrusion of the piercing template is located in the positioning groove. The locking bolt passes through the guide plate and the piercing template and locks the guide plate and the piercing template in place by means of the locking nut.

8. The angle adjustable puncture positioning support according to claim 1, wherein, The adjusting arm has at least three degrees of freedom, enabling the guide plate connecting plate to be adjusted to any position in its working space and locked. The adjusting arm is one or more combinations of mechanical damping arm, mechanical threaded locking arm, mechanical hydraulic locking arm, serpentine locking arm, electromagnetic braking positioning bracket, pneumatic braking positioning bracket, and hydraulic braking positioning bracket.

9. The angle-adjustable puncture positioning bracket according to claim 8, characterized in that, When the adjusting arm is a mechanical hydraulic locking arm, the mechanical hydraulic locking arm includes a first positioning rod, a second positioning rod, and an adjusting bracket. The adjusting bracket includes a first connecting rod and a second connecting rod, which are connected by a rotary hinge. The ends of the first connecting rod and the second connecting rod are respectively connected to the first positioning rod and the second positioning rod through ball joints. When the handle located on the rotary hinge is tightened, all degrees of freedom of the mechanical hydraulic locking arm can be locked.

10. An angle adjustable puncture positioning support according to claim 9, wherein The end of the first positioning rod away from the guide plate connecting plate is provided with a locking structure or base plate. The end of the second positioning rod near the guide plate connecting plate is fixedly connected to the end of the second adjusting plate. The locking structure includes a locking seat and a locking screw. The locking seat has a gap for the locking part of the surgical platform to be engaged. A third threaded hole is provided on one side of the locking seat. One end of the locking screw passes through the third threaded hole and is threadedly connected to the third threaded hole. The other end of the locking screw is provided with a handle for easy rotation. When the locking screw is tightened, the end face of the locking screw presses against the locking part of the surgical platform, thereby fixing the adjusting arm on the surgical platform. The plane of the base plate is perpendicular to the first positioning rod.

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