Laser Doppler probe fixing clamp capable of adjusting clamping force

Abstract

The invention relates to the technical field of medical apparatus and instruments, and discloses a clamping force adjustable laser Doppler probe fixing clamp which comprises a main body shell, a clamping groove is formed in the right end of the main body shell, a clamping table is clamped in the clamping groove, a probe is fixedly connected to the right end of the clamping table, a first limiting groove is formed in the left end of the clamping table, and a second limiting groove is formed in the right end of the clamping table. And first clamping teeth are fixedly connected to the inner wall of the first limiting groove, a sliding groove is formed in the main body shell, a clamping plate is slidably connected to the interior of the sliding groove, and second clamping teeth are fixedly connected to the surface of the clamping plate. By arranging the clamping plate, the second clamping teeth, the first clamping teeth, the first spring, the pressing rod, the trapezoidal groove, the trapezoidal block and the second spring, the trapezoidal block slides in the inclined trapezoidal groove and synchronously compresses the second spring, the radial clamping force of the trapezoidal block on the clamping table is linearly increased along with the insertion depth, and the clamping teeth are immediately engaged again after the pressing rod is loosened, so that the clamping force is adjusted when the probe is fixed.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a laser Doppler probe fixing clip with adjustable clamping force. Background Technology

[0002] Laser Doppler probes utilize the Doppler effect to non-contactly measure blood flow in tissue microvessels. The output signal is extremely sensitive to changes in displacement, angle, and pressure. Clinically, it is required that the probe maintain a constant light pressure and zero slippage with the surface being measured. Traditional fixation methods often rely on tape, Velcro, or rigid brackets.

[0003] Existing probe holders cannot adjust pressure online once locked. Excessive tightness compresses blood vessels, causing blood flow signal distortion, while excessive looseness causes the probe to slip with breathing, creating motion artifacts. Therefore, it is difficult to continuously adjust the clamping force during surgery, and it is also impossible to achieve rapid assembly, disassembly, and repositioning in metal environments such as emergency rooms and catheterization beds. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a laser Doppler probe fixing clip with adjustable clamping force.

[0005] This invention is achieved using the following technical solution: an adjustable clamping force laser Doppler probe fixing clip, comprising a main body shell, a slot on the right end of the main body shell, a clamping platform inside the slot, a probe fixedly connected to the right end of the clamping platform, a limiting groove on the left end of the clamping platform, a clamping tooth fixedly connected to the inner wall of the limiting groove, a sliding groove inside the main body shell, a clamping plate slidably connected inside the sliding groove, a clamping tooth fixedly connected to the surface of the clamping plate, a spring fixedly connected to the front end of the clamping plate, a pressing rod slidably connected inside the main body shell, a trapezoidal groove on the surface of the clamping platform, a trapezoidal block slidably connected to the surface of the trapezoidal groove, and a spring fixedly connected to the top of the trapezoidal block.

[0006] Through the above technical solution, the reversible locking between the probe and the main body shell and the stepless adjustment of the clamping force are realized by the insertion of the slot and the plate, the meshing of the first and second clamping teeth, the sliding of the trapezoidal slot and the trapezoidal block on the inclined surface, and the elastic energy storage of the first and second springs. This ensures both quick loading and unloading and continuous increase or maintenance of the clamping force.

[0007] As a further improvement to the above solution, the slot is connected to the slide, and the second slot is adapted to the first slot.

[0008] The connection between the slot and the slide allows the card plate to directly extend into the slot and contact the card platform. The shape matching of the second card tooth and the first card tooth ensures that the meshing surface can bear the axial tensile force, preventing the probe from loosening in a vibration environment.

[0009] As a further improvement to the above scheme, two trapezoidal slots are provided, and the two trapezoidal slots are evenly distributed symmetrically with respect to the center of the left end surface of the card table. The distance between the trapezoidal slots and the center of the card table gradually increases from right to left.

[0010] Two centrally symmetrical trapezoidal slots simultaneously apply radial force to the trapezoidal block when the clamping table is inserted, so that the clamping force is evenly distributed; the slope of the slot is fixed to ensure that the clamping force increases linearly with the insertion depth, and the adjustment process is repeatable and predictable.

[0011] As a further improvement to the above solution, a limiting post is fixedly connected to the surface of the pressing rod, a pressing head is fixedly connected to the end of the limiting post away from the pressing rod, a sliding strip is slidably connected inside the card plate, and a second limiting groove is opened inside the main body shell.

[0012] The limiting post and the limiting groove cooperate to ensure that the pressing rod can only move along the set straight line, preventing the clamping plate from tilting when pressing; the slide bar is fixed on the surface of the slide groove to provide additional guidance for the clamping plate, reduce the cantilever deformation of the clamping plate, and improve the meshing accuracy.

[0013] As a further improvement to the above solution, the limiting post is located inside the limiting groove two, the front end of the pressing rod is fixedly connected to the surface of the card plate, and the front and rear ends of the slide bar are fixedly connected to the surface of the slide groove.

[0014] As a further improvement to the above solution, a sliding rod is fixedly connected to the top of the trapezoidal block, a limiting plate is fixedly connected to the top of the sliding rod, a limiting hole is opened on the surface of the main body shell, and an inner plate is fixedly connected to the inner wall of the limiting hole.

[0015] The sliding rod and the limiting hole provide the trapezoidal block with the only degree of freedom to move up and down; the limiting plate contacts the bottom of the inner plate to form a hard limit, preventing the spring from being over-compressed and deformed.

[0016] As a further improvement to the above solution, the bottom of the limiting plate is in contact with the bottom of the inner plate, and the sliding rod is located inside the limiting hole.

[0017] As a further improvement to the above solution, a magnetic strip is fixedly connected to the bottom of the main shell, a sleeve is fixedly connected to the bottom of the inner plate, a base is fixedly connected to the bottom of the sleeve, and an installation hole is provided on the top of the base.

[0018] The magnetic strip allows the main body shell to be quickly attached to a ferromagnetic operating table or support, and then fixed through the mounting holes on the base after pre-positioning.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention comprises a clamping plate, a second clamping tooth, a first clamping tooth, a first spring, a pressing rod, a trapezoidal groove, a trapezoidal block, and a second spring. During installation, pressing the pressing rod causes the clamping plate to retract against the first spring. After the clamping platform is inserted, releasing the pressing rod causes the second clamping tooth to engage instantaneously with the first clamping tooth, achieving rapid locking of the probe to the main body shell. When it is necessary to adjust the clamping force, pressing the pressing rod again causes the clamping teeth to separate, and the clamping platform is pushed axially. The trapezoidal block slides in the inclined trapezoidal groove and simultaneously compresses the second spring. The radial clamping force of the trapezoidal block on the clamping platform increases linearly with the insertion depth. After releasing the pressing rod, the clamping teeth immediately re-engage to adjust the clamping force when fixing the probe. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall top cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the card plate and card platform separation structure of the present invention; Figure 5 This is a schematic diagram of the overall front cross-sectional structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B.

[0021] Explanation of key symbols: 1. Main body shell; 2. Card slot; 3. Card platform; 4. Probe; 5. Limiting groove one; 6. Card tooth one; 7. Slide groove; 8. Card plate; 9. Card tooth two; 10. Spring one; 11. Pressing rod; 12. Limiting post; 13. Pressing head; 14. Slide bar; 15. Trapezoidal groove; 16. Trapezoidal block; 17. Spring two; 18. Slide rod; 19. Limiting plate; 20. Limiting hole; 21. Inner plate; 22. Limiting groove two; 23. Magnetic strip; 24. Card sleeve; 25. Base; 26. Mounting hole. Detailed Implementation

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example

[0023] Please combine Figure 1-6This embodiment of a laser Doppler probe fixing clip with adjustable clamping force includes a main body shell 1. A slot 2 is provided at the right end of the main body shell 1. A clamping platform 3 is clamped inside the slot 2. A probe 4 is fixedly connected to the right end of the clamping platform 3. A limiting groove 5 is provided at the left end of the clamping platform 3. A clamping tooth 6 is fixedly connected to the inner wall of the limiting groove 5. A sliding groove 7 is provided inside the main body shell 1. A clamping plate 8 is slidably connected inside the sliding groove 7. A clamping tooth 9 is fixedly connected to the surface of the clamping plate 8. A spring 10 is fixedly connected to the front end of the clamping plate 8. A pressing rod 11 is slidably connected inside the main body shell 1. A trapezoidal groove 15 is provided on the surface of the clamping platform 3. A trapezoidal block 16 is slidably connected to the surface of the trapezoidal groove 15. A spring 17 is fixedly connected to the top of the trapezoidal block 16.

[0024] During installation, press the pressing rod 11 to push the locking plate 8 to move. At the same time, the locking plate 8 is pressed against the spring 10. Then, the locking platform 3 is inserted into the inside of the locking slot 2. The trapezoidal block 16 slides on the surface of the limiting groove 5. Simultaneously, the locking plate 8 is inserted into the inside of the limiting groove 5. Release the force applied to the pressing rod 11. The locking plate 8 rebounds under the action of the spring 10. The locking tooth 9 and the locking tooth 6 mesh. At this time, the locking platform 3 is locked into the inside of the locking slot 2, fixing the probe.

[0025] The slot 2 is connected to the slide 7, and the second slot 9 is adapted to the first slot 6. The connection between the slot 2 and the slide 7 allows the card plate 8 to be directly inserted into the slot 2 and contact the card platform 3. The matching shape of the second slot 9 and the first slot 6 ensures that the meshing surface bears the axial tensile force, preventing the probe 4 from loosening under vibration.

[0026] There are two trapezoidal slots 15. The two trapezoidal slots 15 are evenly distributed symmetrically around the center of the left end surface of the clamping platform 3. The distance between the trapezoidal slots 15 and the axis of the clamping platform 3 gradually increases from right to left. When the clamping platform 3 is inserted, the two centrally symmetrical trapezoidal slots 15 simultaneously apply radial force to the trapezoidal block 16, so that the clamping force is evenly distributed.

[0027] A limiting post 12 is fixedly connected to the surface of the pressing rod 11. A pressing head 13 is fixedly connected to the end of the limiting post 12 away from the pressing rod 11. A slide bar 14 is slidably connected inside the clamping plate 8. A second limiting groove 22 is opened inside the main body shell 1. The limiting post 12 cooperates with the second limiting groove 22 to make the pressing rod 11 move only along a set straight line to prevent the clamping plate 8 from tilting when pressing.

[0028] The limiting post 12 is located inside the limiting groove 22. The front end of the pressing rod 11 is fixedly connected to the surface of the card plate 8. The front and rear ends of the slide bar 14 are fixedly connected to the surface of the slide groove 7. The limiting post 12 is axially constrained by the limiting groove 22 to ensure that the end of the pressing stroke makes the card tooth 9 completely disengage from the card tooth 6, thus avoiding overpressure damage to the spring 10.

[0029] A sliding rod 18 is fixedly connected to the top of the trapezoidal block 16, and a limiting plate 19 is fixedly connected to the top of the sliding rod 18. A limiting hole 20 is opened on the surface of the main body shell 1, and an inner plate 21 is fixedly connected to the inner wall of the limiting hole 20. The sliding rod 18 and the shaft hole of the limiting hole 20 cooperate to provide the trapezoidal block 16 with the only degree of freedom to move up and down. The limiting plate 19 contacts the bottom of the inner plate 21 to form a hard limit, preventing the spring 17 from being over-compressed and causing permanent deformation.

[0030] The bottom of the limiting plate 19 is in contact with the bottom of the inner plate 21, and the slide rod 18 is located inside the limiting hole 20.

[0031] A magnetic strip 23 is fixedly connected to the bottom of the main body shell 1, a sleeve 24 is fixedly connected to the bottom of the inner plate 21, a base 25 is fixedly connected to the bottom of the sleeve 24, and a mounting hole 26 is provided on the top of the base 25.

[0032] The implementation principle of the adjustable clamping force laser Doppler probe fixing clip in this embodiment is as follows: When installing the probe 4, first press the pressing rod 11, so that the pressing rod 11 pushes the clamping plate 8 to move. At the same time, the clamping plate 8 is squeezed by the spring 10. Then, the clamping platform 3 is inserted into the inside of the clamping groove 2, the trapezoidal block 16 slides on the surface of the limiting groove 5, and the clamping plate 8 is inserted into the inside of the limiting groove 5. Release the force applied to the pressing rod 11, and the clamping plate 8 rebounds under the action of the spring 10. The clamping tooth 9 and the clamping tooth 6 mesh. At this time, the clamping platform 3 is clamped into the inside of the clamping groove 2 to fix the probe.

[0033] When the clamping force of the probe needs to be adjusted, press the pressing rod 11 so that the pressing rod 11 drives the second clamping tooth 9 on the surface of the clamping plate 8 to disengage from the first clamping tooth 6, press the clamping platform 3, and the trapezoidal block 16 continues to move on the surface of the trapezoidal groove 15. Since the distance between the trapezoidal groove 15 and the axis gradually decreases from right to left, the squeezing force of the trapezoidal block 16 on the second spring 17 gradually increases during the movement of the trapezoidal groove 15, and the clamping force of the trapezoidal block 16 on the clamping platform 3 gradually increases, so as to facilitate the adjustment of the clamping force of the clamping platform 3. At this time, release the pressing rod 11, and the second clamping tooth 9 on the surface of the clamping plate 8 engages with the surface of the first clamping tooth 6, fixing the clamping platform 3 to the main body shell 1.

[0034] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A laser Doppler probe fixing clip with adjustable clamping force, characterized in that: The device includes a main shell (1), a slot (2) is provided at the right end of the main shell (1), a slot (3) is engaged inside the slot (2), a probe (4) is fixedly connected to the right end of the slot (3), a limit groove (5) is provided at the left end of the slot (3), a tooth (6) is fixedly connected to the inner wall of the limit groove (5), a sliding groove (7) is provided inside the main shell (1), a plate (8) is slidably connected inside the sliding groove (7), a tooth (9) is fixedly connected to the surface of the plate (8), a spring (10) is fixedly connected to the front end of the plate (8), a pressing rod (11) is slidably connected inside the main shell (1), a trapezoidal groove (15) is provided on the surface of the slot (3), a trapezoidal block (16) is slidably connected to the surface of the trapezoidal groove (15), and a spring (17) is fixedly connected to the top of the trapezoidal block (16).

2. The laser Doppler probe fixing clip with adjustable clamping force as described in claim 1, characterized in that: The slot (2) is connected to the slide (7), and the second slot (9) is adapted to the first slot (6).

3. The laser Doppler probe fixing clip with adjustable clamping force as described in claim 1, characterized in that: The trapezoidal groove (15) is provided in two parts. The two trapezoidal grooves (15) are evenly distributed symmetrically with respect to the center of the left end surface of the card table (3). The distance between the trapezoidal groove (15) and the axis of the card table (3) gradually increases from right to left.

4. The laser Doppler probe fixing clip with adjustable clamping force as described in claim 1, characterized in that: The surface of the pressing rod (11) is fixedly connected to a limiting post (12), and the end of the limiting post (12) away from the pressing rod (11) is fixedly connected to a pressing head (13). The inside of the card plate (8) is slidably connected to a slide bar (14), and the inside of the main body shell (1) is provided with a limiting groove (22).

5. The laser Doppler probe fixing clip with adjustable clamping force as described in claim 4, characterized in that: The limiting post (12) is located inside the limiting groove (22), the front end of the pressing rod (11) is fixedly connected to the surface of the card plate (8), and the front and rear ends of the slide bar (14) are fixedly connected to the surface of the slide groove (7).

6. The laser Doppler probe fixing clip with adjustable clamping force as described in claim 1, characterized in that: The top of the trapezoidal block (16) is fixedly connected to a slide rod (18), the top of the slide rod (18) is fixedly connected to a limiting plate (19), the surface of the main body shell (1) is provided with a limiting hole (20), and the inner wall of the limiting hole (20) is fixedly connected to an inner plate (21).

7. The laser Doppler probe fixing clip with adjustable clamping force as described in claim 6, characterized in that: The bottom of the limiting plate (19) is in contact with the bottom of the inner plate (21), and the slide rod (18) is located inside the limiting hole (20).

8. The laser Doppler probe fixing clip with adjustable clamping force as described in claim 6, characterized in that: A magnetic strip (23) is fixedly connected to the bottom of the main body shell (1), a sleeve (24) is fixedly connected to the bottom of the inner plate (21), a base (25) is fixedly connected to the bottom of the sleeve (24), and an installation hole (26) is provided on the top of the base (25).

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