Auxiliary positioning frame for puncture surgery

By designing the auxiliary positioning frame for puncture surgery, the use of limit bolts and air pressure to push the assembly, the problem of the puncture tube being difficult to stabilize in the lesion position is solved, and the stability and accuracy of the puncture process are achieved, avoiding secondary injuries.

CN120570657AActive Publication Date: 2025-09-02COAST GUARD GENERAL HOSPITAL OF THE PEOPLES ARMED POLICE FORCE OF CHINA
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Patent Information

Application Number
CN202510807609.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-17
Publication Date
2025-09-02
Estimated Expiration
2045-06-17

AI Technical Summary

Technical Problem

During the brain puncture, the puncture tube is difficult to maintain stability and is prone to break away from the lesion position, resulting in secondary injury.

Method used

A puncture surgery auxiliary positioning frame is designed, including a positioning frame, arc-shaped adjustment plate, sliding frame, sliding plate and limiting mechanism. Through limiting bolts, semicircular clamping plates and pneumatic pushing components, the stability and accuracy of the puncture tube in the lesion position are ensured.

Benefits of technology

Effectively prevent the puncture tube from detaching at the lesion position, ensure the stability and accuracy of the puncture process, avoid secondary injuries, and adapt to the cleaning of different lesion depths and hard hematomas.

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Abstract

The invention relates to the field of puncture operation positioning equipment, in particular to a puncture operation auxiliary positioning frame which comprises a positioning frame, two supporting frames are fixedly connected to the two sides of the positioning frame, and rotating shafts are arranged in the supporting frames; the two ends of the arc-shaped adjusting plate are rotationally connected to the two rotating shafts correspondingly, and first fixing assemblies are arranged on the rotating shafts to limit the rotating angle of the arc-shaped adjusting plate; the sliding frame is slidably connected to the side wall of the arc-shaped adjusting plate, and a second fixing assembly is arranged on the sliding frame to lock the position of the sliding frame. By arranging the rotating shell and the semicircular clamping plates, in the downward moving process of the sliding plate, the two semicircular clamping plates get close to each other, a puncture tube is clamped and positioned, longitudinal movement of the puncture tube is limited, stability of the puncture tube in the puncture process is ensured, after puncture is finished, the sliding plate moves downwards, and the puncture tube is prevented from falling off. And after the puncture tube is separated from the lesion position, the two semicircular clamping plates are far away from each other, so that the puncture tube can be conveniently taken down from the guide plate.
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Description

Technical Field

[0001] The present invention relates to the field of puncture surgery positioning equipment, and in particular to a puncture surgery auxiliary positioning frame. Background Art

[0002] Brain puncture is an important emergency measure and a routine clinical operation, commonly used in clinical diagnosis and treatment. The current brain puncture process uses CT scanning to locate the lesion site of the brain, and determine the puncture point and puncture angle. Then, surgery is performed on the patient's brain lesion site, and the lesion site in the brain is punctured through a puncture tube, and the lesion site is treated through the puncture tube.

[0003] For example, the invention patent with publication number CN106175893B discloses a method and device for implanting an intracranial electrode with an arc-shaped trajectory, which is used to realize the puncture trajectory of a single electrode passing through multiple intracranial target points in the skull. The method for implanting an intracranial electrode uses an arc-shaped puncture cannula with a fixed curvature to introduce the electrode into the skull. The arc-shaped puncture cannula is guided by an arc-shaped guide cannula with a fixed curvature to realize puncture positioning. The arc-shaped guide cannula is fixed on a positioning device, and the positioning device is provided with a positioning frame and a positioning point with adjustable position. The positioning point is provided with a fixing part. When the arc-shaped guide cannula passes through the positioning point and is fixed by the fixing part, the arc-shaped guide cannula completes positioning; when the arc-shaped guide cannula is positioned, the circumference of the circle where the arc of the arc-shaped guide cannula is located passes through multiple target points in the skull.

[0004] Regarding the above case, there are still the following shortcomings. For example, during the puncture of the lesion, due to the lack of limiting the puncture tube, it is difficult for the puncture tube to remain stable after puncturing the lesion. If the puncture tube is accidentally touched during the operation, it is easy to cause the puncture tube to leave the lesion position, thereby easily causing secondary damage to the patient.

[0005] To this end, the present invention proposes a puncture surgery auxiliary positioning frame to solve the above problems. Summary of the Invention

[0006] To achieve the above objectives, the present invention adopts the following technical solutions: a puncture surgery auxiliary positioning frame, comprising: a positioning frame, two supporting frames fixedly connected on both sides thereof, a rotating shaft being provided in the supporting frames;

[0007] The arc-shaped adjustment plate has two ends rotatably connected to two rotating shafts, and the rotating shafts are provided with a first fixing component to limit the rotation angle of the arc-shaped adjustment plate;

[0008] A sliding frame is slidably connected to the side wall of the arc-shaped adjustment plate, and a second fixing component is provided on the sliding frame to lock the position of the sliding frame;

[0009] The sliding plate is slidably connected to the side wall of the sliding frame, and a guide plate is fixed to the side wall, and a guide hole is opened at the top of the guide plate;

[0010] A limiting mechanism is used to clamp and fix the puncture tube during the puncture process;

[0011] The linear drive mechanism drives the sliding plate to move up and down to control the penetration depth of the puncture tube.

[0012] Preferably, the linear drive mechanism includes:

[0013] a rack fixed to the side wall of the sliding plate;

[0014] a gear, rotatably connected to the sliding frame and meshing with the rack;

[0015] The knob is fixed coaxially with the gear, and a friction sleeve is provided on the shaft surface to increase the friction resistance with the sliding frame;

[0016] The limiting bolts and the limiting holes symmetrically arranged on the top of the sliding plate limit the maximum moving distance of the sliding plate through the cooperation of the limiting bolts and the limiting holes.

[0017] Preferably, the limiting mechanism includes:

[0018] A rotating shell, the rotating shell is arranged in the guide hole, the inner ring side wall of the rotating shell is symmetrically fixedly connected to two connecting shells, the two connecting shells are sealed and slidably provided with sliding blocks, and the ends of the two sliding blocks are fixedly connected to semicircular clamping plates;

[0019] The air pressure push component is linked with the linear drive mechanism. When the sliding plate moves downward, the compressed gas pushes the sliding block, so that the clamping plate clamps the puncture tube.

[0020] Preferably, the air pressure pushing component includes:

[0021] Two compression shells, the two compression shells are in gas communication with the rotating shell, and the other ends of the compression shells pass through the guide plate and are fixedly connected to the guide plate;

[0022] Two L-shaped compression blocks, the ends of the two L-shaped compression blocks are sealed and slidably connected in the compression shell at corresponding positions;

[0023] Two drive plates, the two drive plates are respectively fixedly connected to the side walls of the L-shaped compression block, and the side walls of the drive plates are provided with drive grooves, which cooperate with the fixed pins on the sliding frame. The changes in the air pressure in the compression shell are controlled by switching the trajectories of the oblique groove and the straight groove on the drive groove.

[0024] Preferably, the connecting shell is slidably connected in the guide hole, the inner wall of the connecting shell is rotatably connected to an annular sealing plate, the annular sealing plate is fixedly connected in the guide hole, and the end of the compression shell passes through the annular sealing plate and is fixedly connected to the annular sealing plate.

[0025] Preferably, annular notches are provided at the upper and lower ends of the annular sealing plate, and two annular connecting plates adapted to the annular notches are symmetrically fixedly connected at the upper and lower ends of the inner wall of the connecting shell, and the annular connecting plates are slidably connected in the annular notches.

[0026] Preferably, the outer wall of the inner ring of the connecting shell is provided with an annular wave groove connected end to end, and the annular array of the inner wall of the guide hole is fixedly connected to several L-shaped fixing blocks, and the top of the L-shaped fixing block is fixedly connected to a driving pin, and the driving pin is slidably connected in the annular wave groove.

[0027] Preferably, the first fixing assembly includes a rotating sleeve, the rotating sleeve is threadedly connected to the end surface of the rotating shaft, and a friction plate is fixed to the end of the rotating sleeve.

[0028] Preferably, the second fixing assembly includes a screw, the screw is threadedly connected to the outer wall of the sliding frame, the end of the screw is rotatably connected to a positioning plate, and the positioning plate is slidably connected to the inner wall of the sliding frame.

[0029] Preferably, four positioning frames are further included, and the four positioning frames are respectively fixedly connected to the two side walls of the positioning frame, and the top ends of the positioning frames are threadedly connected with screws.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The present invention provides a rotating shell and a semicircular clamping plate. When the sliding plate moves downward, the two semicircular clamping plates approach each other and clamp the puncture tube to position it, limiting the longitudinal movement of the puncture tube and ensuring the stability of the puncture tube during the puncture process. After the puncture is completed, the sliding plate moves upward. After the puncture tube is detached from the lesion position, the two semicircular clamping plates move away from each other, thereby facilitating the removal of the puncture tube from the guide plate.

[0032] 2. The present invention provides a limit bolt and several limit holes. When the sliding plate moves downward, the limit bolt will move downward. When the limit bolt comes into contact with the top of the sliding frame, the sliding plate cannot move downward, which is conducive to flexibly adjusting the downward movement distance of the sliding plate according to the depth of the lesion, ensuring that the puncture tube can accurately penetrate the lesion position.

[0033] 3. The present invention provides an annular wave groove and an L-shaped fixing block. During the rotation of the puncture tube, the connecting shell rotates under the connecting action of the two semicircular clamping plates. Driven by the annular wave groove and the driving pin, the connecting shell moves up and down, thereby driving the puncture tube to move up and down, which is conducive to puncturing hard hematomas and avoiding blockage of the puncture tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0035] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0036] Figure 3 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0037] Figure 4 Schematic diagram of the connection between the sliding plate and the guide plate in the present invention;

[0038] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0039] Figure 6 A schematic diagram of the connection between the rack and the gear of the present invention;

[0040] Figure 7 This is a schematic diagram of the connection between the guide plate and the connecting shell in the present invention;

[0041] Figure 8 Schematic diagram of the connection between the connecting shell and the annular sealing plate in the present invention;

[0042] Figure 9 for Figure 8 Enlarged view of point C in the middle;

[0043] Figure 10 Schematic diagram of the connection between the connecting shell and the annular connecting plate in the present invention;

[0044] Figure 11 Schematic diagram of the connection between the annular sealing plate and the compression shell in the present invention.

[0045] In the figure: positioning frame 1, positioning frame 2, screw 3, support frame 4, rotating shaft 5, rotating sleeve 6, friction plate 7, arc-shaped adjustment plate 8, sliding frame 9, screw 10, positioning plate 11, sliding plate 12, limiting hole 1201, bolt 13, guide plate 14, guide hole 15, puncture tube 16, rack 17, gear 18, knob 19, friction sleeve 20, rotating shell 21, annular connecting plate 22, annular wave groove 23, annular sealing plate 24, annular notch 25, connecting shell 26, sliding block 27, semicircular clamping plate 28, compression shell 29, L-shaped compression block 30, drive plate 31, drive groove 32, fixing pin 33, L-shaped fixing block 34, drive pin 35. DETAILED DESCRIPTION

[0046] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0047] like Figures 1 to 11 The puncture surgery auxiliary positioning frame shown includes:

[0048] A positioning frame 1, with two support frames 4 fixedly connected on both sides of the positioning frame 1, and a rotating shaft 5 fixedly connected inside the support frame 4;

[0049] The arc-shaped adjustment plate 8 has two bottom ends rotatably connected to the surfaces of the two rotating shafts 5. The surface of the rotating shaft 5 is provided with a first fixing component to limit the position of the arc-shaped adjustment plate 8;

[0050] The sliding frame 9 is slidably connected to the side wall of the arc-shaped adjustment plate 8. The sliding frame 9 is provided with a second fixing component, which is used to limit the position of the sliding frame 9. The side wall of the sliding frame 9 is slidably connected to the sliding plate 12. The side wall of the sliding plate 12 is fixed with a guide plate 14. The top of the guide plate 14 is provided with a guide hole 15;

[0051] The puncture tube 16 has an injection section and a puncture section. The bottom end of the puncture section passes through the guide hole 15, and the bottom end of the injection section contacts the top of the guide plate 14;

[0052] The limiting mechanism is used to limit the puncture section.

[0053] A linear drive mechanism is used to drive the sliding plate 12 to move up and down so that the puncture tube 16 penetrates the lesion position;

[0054] Specifically, in the prior art, during the puncture of the lesion, due to the lack of a position limiter on the puncture tube, it is difficult to maintain stability after the puncture tube is inserted into the lesion. If the puncture tube is accidentally touched during the operation, it is easy to cause the puncture tube to move out of the lesion position, thereby easily causing secondary damage to the patient. The present technical solution can solve the above problem. The specific operation is as follows:

[0055] When it is necessary to puncture the patient's intracranial lesion, the bottom end of the puncture tube 16 is first passed through the guide hole 15, and then the sliding plate 12 is moved downward by the linear drive mechanism. During the movement, the puncture tube 16 is limited by the limiting mechanism in the guide hole 15, so that the puncture tube 16 and the guide plate 14 move downward synchronously;

[0056] During the downward movement of the puncture tube 16 (before puncturing the lesion), the rotation angle of the arc-shaped adjustment plate 8 and the position of the sliding frame 9 on the arc-shaped adjustment plate 8 are adjusted to ensure the puncture point and puncture angle of the puncture tube 16. Then, the first fixing assembly and the second fixing assembly are used to limit the position of the arc-shaped adjustment plate 8 and the position of the sliding frame 9, respectively, to ensure the stability of the puncture tube 16 during the process of puncturing the lesion.

[0057] After the puncture is completed, the injection section of the puncture tube 16 is connected to the syringe to aspirate the hematoma at the lesion site, and then physiological saline is repeatedly injected into the lesion site through the syringe to remove the residual hematoma, that is, the toxic products after the hematoma liquefaction;

[0058] Since the puncture tube 16 is positioned on the guide plate 14 by the positioning mechanism, it is helpful to ensure the stability of the puncture tube 16 during the process of hematoma suction and injection of normal saline at the lesion site, and prevent the puncture tube 16 from detaching from the lesion site and causing secondary damage to the patient.

[0059] As a further embodiment of the present invention, the linear drive mechanism includes:

[0060] Rack 17, rack 17 is fixedly connected to the side wall of sliding plate 12;

[0061] Gear 18, gear 18 is rotatably connected to the sliding frame 9, and gear 18 is engaged with rack 17;

[0062] Knob 19, which is coaxially fixed with gear 18. Knob 19 is rotatably connected to the outer wall of sliding frame 9. A friction sleeve 20 is fixedly connected to the shaft surface of knob 19, and friction sleeve 20 contacts the side wall of sliding frame 9.

[0063] Several limiting holes 1201 are symmetrically provided on the top side wall of the sliding plate 12;

[0064] A limiting bolt 13, which is threadedly connected to one of the limiting holes 1201;

[0065] Specifically, by providing a rack 17 and a gear 18, during the puncture process, by turning the knob 19, the gear 18 rotates, and the rack 17 moves downward under the action of meshing. Since the rack 17 is fixedly connected to the sliding plate 12, the rack 17 drives the sliding plate 12 to move downward synchronously;

[0066] By setting a limiting bolt 13 and several limiting holes 1201, the downward movement of the sliding plate 12 will drive the limiting bolt 13 to move downward. When the limiting bolt 13 comes into contact with the top of the sliding frame 9, the sliding plate 12 cannot move downward, which is conducive to flexibly adjusting the downward movement distance of the sliding plate 12 according to the depth of the lesion, ensuring that the puncture tube 16 can accurately penetrate the lesion position.

[0067] In addition, this embodiment is further provided with a friction sleeve 20 to increase the friction between the knob shaft and the sliding frame 9, thereby improving the stability of the position of the sliding plate 12 and preventing the sliding plate 12 from moving during operation, causing the position of the puncture tube 16 to shift.

[0068] As a further embodiment of the present invention, the limiting mechanism includes:

[0069] A rotating shell 21 is disposed in the guide hole 15. The inner ring sidewall of the rotating shell 21 is symmetrically fixedly connected to two connecting shells 26. Sliding blocks 27 are sealed and slidably disposed in the two connecting shells 26. The ends of the two sliding blocks 27 are fixedly connected to semicircular clamping plates 28.

[0070] The pneumatic pushing component cooperates with the linear drive mechanism. When the sliding plate 12 moves downward, the pneumatic pushing component pushes the sliding block 27 to move the two semicircular clamping plates 28 closer to each other to clamp the puncture segment. When the sliding plate 12 moves upward, the two semicircular clamping plates 28 move away from each other.

[0071] The air pressure push assembly includes:

[0072] Two compression shells 29, the two compression shells 29 are in air communication with the rotating shell 21, and the other ends of the compression shells 29 pass through the guide plate 14 and are fixedly connected to the guide plate 14;

[0073] Two L-shaped compression blocks 30, the ends of the two L-shaped compression blocks 30 are sealed and slidably connected in the compression shell 29 at corresponding positions;

[0074] Two drive plates 31 are respectively fixedly connected to the side walls of the L-shaped compression block 30. The side walls of the drive plates 31 are provided with drive slots 32. The outer wall of the sliding frame 9 is fixedly connected to the position corresponding to the drive slots 32. The fixing pin 33 is slidably connected in the drive slots 32. The drive slots 32 include an oblique slot and a straight slot. When the sliding plate 12 moves downward, the L-shaped compression block 30 is pulled by the oblique slots to slide into the compression shell 29.

[0075] Specifically, by providing the rotating shell 21 and the semicircular clamping plate 28, when the sliding plate 12 moves downward, the driving plate 31 moves downward, causing the inclined slot to move downward, and generating relative movement with the fixing pin 33. Driven by the inclined slot, the driving plate 31 drives the L-shaped compression block 30 to move, and the L-shaped compression block 30 slides into the compression shell 29, so that the air pressure in the compression shell 29 increases, thereby causing the sliding block 27 to extend from the connecting shell 26, so that the two semicircular clamping plates 28 approach each other, clamping and positioning the puncture tube 16, and limiting the longitudinal movement of the puncture tube 16;

[0076] After the semicircular clamping plate 28 clamps and positions the puncture tube 16, the straight groove and the fixing pin 33 move relative to each other. Under the limit of the straight groove, the air pressure in the compression shell 29 is ensured to be stable, thereby ensuring that the two semicircular clamping plates 28 clamp the puncture tube 16 stably.

[0077] After the puncture is completed, the sliding plate 12 moves upward, causing the straight groove to move upward relative to the fixing pin 33, ensuring the stability of the puncture tube 16 when it is separated from the lesion position. After the puncture tube 16 is separated from the lesion position, the inclined groove moves along the fixing pin 33, causing the driving plate 31 to drive the L-shaped compression block 30 to extend from the compression shell 29. Under the above principle, the two semicircular clamping plates 28 are moved away from each other, thereby facilitating the removal of the puncture tube 16 from the guide plate 14.

[0078] As a further embodiment of the present invention, a connecting shell 26 is slidably connected to the guide hole 15, an annular sealing plate 24 is rotatably connected to the inner wall of the connecting shell 26, and the annular sealing plate 24 is fixedly connected to the guide hole 15. The end of the compression shell 29 passes through the annular sealing plate 24 and is fixedly connected to the annular sealing plate 24;

[0079] The inner and outer walls of the connecting shell 26 are provided with an annular wave groove 23 connected end to end. A plurality of L-shaped fixing blocks 34 are fixedly connected to the inner wall of the guide hole 15 in an annular array. A driving pin 35 is fixedly connected to the top of the L-shaped fixing block 34. The driving pin 35 is slidably connected to the annular wave groove 23.

[0080] Specifically, by setting the annular wave groove 23 and the L-shaped fixing block 34, since some hematomas are relatively hard, it is often necessary to rotate the puncture tube 16 when clearing the hematoma. When the puncture tube 16 is rotated, the connecting shell 26 is rotated under the connection action of the two semicircular clamping plates 28, so that the driving pin 35 slides along the annular wave groove 23. Driven by the annular wave groove 23, the connecting shell 26 moves up and down, thereby driving the puncture tube 16 to move up and down, which is conducive to puncturing the hard hematoma and avoiding blockage of the puncture tube 16.

[0081] It should be noted that the height difference between the crest and trough of the annular wave groove 23 is less than 3 mm, so as to prevent the puncture tube 16 from moving too far and causing secondary damage to the patient.

[0082] As a further embodiment of the present invention, the first fixing assembly includes a rotating sleeve 6, which is threadedly connected to the end surface of the rotating shaft 5, and a friction plate 7 is fixed to the end of the rotating sleeve 6;

[0083] Specifically, by driving the rotating sleeve 6 to rotate, under the action of the threaded connection, the rotating sleeve 6 drives the friction plate 7 to approach the bottom end of the arc-shaped adjustment plate 8, and the arc-shaped adjustment plate 8 is limited by the friction resistance of the friction plate 7.

[0084] As a further embodiment of the present invention, the second fixing assembly includes a screw 10, which is threadedly connected to the outer wall of the sliding frame 9, and the end of the screw 10 is rotatably connected to a positioning plate 11, which is slidably connected to the inner wall of the sliding frame 9;

[0085] Specifically, by providing a screw rod 10 and a positioning plate 11 , by rotating the screw rod 10 , under the action of the threaded connection, the screw rod 10 drives the positioning plate 11 to approach and press against the side wall of the arc-shaped adjustment plate 8 , thereby limiting the sliding frame 9 .

[0086] The working principle of the present invention is as follows:

[0087] When it is necessary to puncture the patient's intracranial lesion, the bottom end of the puncture tube 16 is first passed through the guide hole 15, and then the sliding plate 12 is moved downward by the linear drive mechanism. During the movement, the puncture tube 16 is limited by the limiting mechanism in the guide hole 15, so that the puncture tube 16 and the guide plate 14 move downward synchronously;

[0088] During the downward movement of the puncture tube 16 (before puncturing the lesion), the rotation angle of the arc-shaped adjustment plate 8 and the position of the sliding frame 9 on the arc-shaped adjustment plate 8 are adjusted to ensure the puncture point and puncture angle of the puncture tube 16. Then, the first fixing assembly and the second fixing assembly are used to limit the position of the arc-shaped adjustment plate 8 and the position of the sliding frame 9, respectively, to ensure the stability of the puncture tube 16 during the process of puncturing the lesion.

[0089] After the puncture is completed, the injection section of the puncture tube 16 is connected to the syringe to aspirate the hematoma at the lesion site, and then physiological saline is repeatedly injected into the lesion site through the syringe to remove the residual hematoma, that is, the toxic products after the hematoma liquefaction;

[0090] Since the puncture tube 16 is positioned on the guide plate 14 by the positioning mechanism, it is helpful to ensure the stability of the puncture tube 16 during the process of hematoma suction and injection of normal saline at the lesion site, and prevent the puncture tube 16 from detaching from the lesion site and causing secondary damage to the patient.

[0091] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the invention as claimed.

Claims

1. A puncture surgery auxiliary positioning frame, comprising a positioning frame (1), two support frames (4) fixedly connected on both sides of which, a rotating shaft (5) is provided inside the support frame (4), and an arc-shaped adjustment plate (8) is rotatably connected to the surface of the rotating shaft (5), characterized in that: The rotating shaft (5) is provided with a first fixing component to limit the rotation angle of the arc-shaped adjustment plate (8); A sliding frame (9) is slidably connected to the side wall of the arc-shaped adjustment plate (8), and a second fixing component is provided on the sliding frame (9) to lock the position of the sliding frame; A sliding plate (12) is slidably connected to a side wall of the sliding frame (9), and a guide plate (14) is fixed to the side wall. A guide hole (15) is formed at the top of the guide plate (14); A limiting mechanism, used for clamping and fixing the puncture tube (16) during the puncture process; The linear drive mechanism drives the sliding plate (12) to move up and down to control the penetration depth of the puncture tube (16).

2. The puncture surgery auxiliary positioning frame according to claim 1, characterized in that: The linear drive mechanism comprises: a rack (17) fixed to the side wall of the sliding plate (12); a gear (18) rotatably connected to the sliding frame (9) and meshing with the rack (17); The knob (19) is fixed coaxially with the gear (18), and a friction sleeve (20) is provided on the shaft surface thereof to increase the friction resistance with the sliding frame (9); The limiting bolt (13) and the plurality of limiting holes (1201) symmetrically arranged on the top of the sliding plate (12) limit the maximum moving distance of the sliding plate (12) through the cooperation between the limiting bolt (13) and the limiting holes (1201).

3. The puncture surgery auxiliary positioning frame according to claim 1, characterized in that: The limiting mechanism includes: A rotating shell (21), the rotating shell (21) is arranged in the guide hole (15), the inner ring side wall of the rotating shell (21) is symmetrically fixedly connected to two connecting shells (26), the two connecting shells (26) are both sealed and slidably provided with sliding blocks (27), and the ends of the two sliding blocks (27) are both fixedly connected to semicircular clamping plates (28); The air pressure push component is linked with the linear drive mechanism. When the sliding plate (12) moves downward, the compressed gas pushes the sliding block (27), so that the clamping plate (28) clamps the puncture tube (16).

4. The puncture surgery auxiliary positioning frame according to claim 3, characterized in that: The air pressure push component includes: Two compression shells (29), the two compression shells (29) are in air communication with the rotating shell (21), and the other ends of the compression shells (29) pass through the guide plate (14) and are fixedly connected to the guide plate (14); Two L-shaped compression blocks (30), the ends of the two L-shaped compression blocks (30) are sealed and slidably connected in the compression shell (29) at corresponding positions; Two drive plates (31) are fixedly connected to the side walls of the L-shaped compression block (30) respectively. The side walls of the drive plates (31) are provided with drive grooves (32). The drive grooves (32) cooperate with the fixing pins (33) on the sliding frame (9). The air pressure change in the compression shell (29) is controlled by switching the tracks of the oblique grooves and the straight grooves on the drive grooves (32).

5. The puncture surgery auxiliary positioning frame according to claim 4, characterized in that: The connecting shell (26) is slidably connected in the guide hole (15); an annular sealing plate (24) is rotatably connected to the inner wall of the connecting shell (26); the annular sealing plate (24) is fixedly connected in the guide hole (15); and an end of the compression shell (29) passes through the annular sealing plate (24) and is fixedly connected to the annular sealing plate (24).

6. The puncture surgery auxiliary positioning frame according to claim 5, characterized in that: Annular notches (25) are provided at the upper and lower ends of the annular sealing plate (24); two annular connecting plates (22) adapted to the annular notches (25) are symmetrically fixedly connected to the upper and lower ends of the inner wall of the connecting shell (26); the annular connecting plates (22) are slidably connected in the annular notches (25).

7. The puncture surgery auxiliary positioning frame according to claim 6, characterized in that: The inner and outer walls of the connecting shell (26) are provided with an annular wave groove (23) connected end to end. The inner wall of the guide hole (15) is fixedly connected to a plurality of L-shaped fixing blocks (34) in an annular array. The top of the L-shaped fixing block (34) is fixedly connected to a driving pin (35). The driving pin (35) is slidably connected in the annular wave groove (23).

8. The puncture surgery auxiliary positioning frame according to claim 1, characterized in that: The first fixing assembly comprises a rotating sleeve (6), the rotating sleeve (6) being threadedly connected to the end surface of the rotating shaft (5), and a friction plate (7) being fixed to the end of the rotating sleeve (6).

9. The puncture surgery auxiliary positioning frame according to claim 1, characterized in that: The second fixing assembly includes a screw rod (10), the screw rod (10) is threadedly connected to the outer wall of the sliding frame (9), the end of the screw rod (10) is rotatably connected to a positioning plate (11), and the positioning plate (11) is slidably connected to the inner wall of the sliding frame (9).

10. The puncture surgery auxiliary positioning frame according to claim 1, characterized in that: It also includes four positioning frames (2), which are respectively fixedly connected to the two side walls of the positioning frame (1), and the top ends of the positioning frames (2) are threadedly connected with screws (3).

Citation Information

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