Gripper

Abstract

The present invention provides a clamp, which relates to the technical field of medical auxiliary equipment. The clamp includes a bottom box, the front wall and the rear wall of the bottom box are fixedly connected to a fixing frame, the inner wall of the fixing frame is provided with a waist-shaped hole, the right side wall of the bottom box is rotatably connected to a protective cover, and the side of the bottom box away from the protective cover is fixedly connected to a power plug. In the present invention, a built-in release button is used to turn on and off the power of the locking component, which will not be accidentally touched. The clamp uses magnetic powder as a locking medium, which is noiseless when used, and the position will not shift at the moment of locking, and has a long service life. The clamp has a lithium battery and can also be powered by municipal electricity. The power supply voltage is 24 volts, which is within a safe range, and no air source needs to be configured, which is very convenient. The clamping component can be selected for instruments of different weights, and anti-slip pads are provided at the clamping openings of the light-load spring clamp and the heavy-load fixed clamp to prevent the clamping part from slipping.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, in particular to a clamp. Background Art

[0002] In the current surgical process, endoscopes and similar equipment are generally supported by a special assistant or with a bent arm. Manually holding the endoscope will increase the number of people in the operating room, making the operating room, which has limited space, even more crowded. In addition, it is difficult for people to adapt to large-scale operations that take a long time to hold the endoscope, because if the time is too long, the muscles will fatigue and the hand holding the endoscope will shake, making it difficult for the surgeon to see a clear and stable image. In addition, the bent arm structure of most operating rooms is unreasonable, the adjustment range is limited, and step-by-step adjustment is required. It is difficult to meet clinical application requirements in terms of fine-tuning. With the development of technology, technicians have invented a clamping device with multiple joints that can move freely and can be fixed instantly. The clamping device is generally composed of multiple support sections, which are connected by ball head connecting rods. The inner wall of the ball head connecting rod is connected, and then connected by a steel wire that passes through it. There is a knot on the steel wire. The steel wire is driven by pneumatic or motor, and the wire rope is tightened to increase the friction between the support section and the ball head connecting rod, thereby fixing the clamping device.

[0003] At present, the common clamping devices on the market are all of this type of locking method. After investigation, it was found that most of the existing clamping devices on the market have the following problems:

[0004] 1. Generally, the locking or loosening is done by stepping on a foot switch. During use, it is easy to accidentally touch the foot switch and cause accidental loosening. In addition, when using pneumatic drive, the room must also be equipped with an air source;

[0005] 2. After determining the position, release the foot pedal to start the lock. The tightening of the wire will cause the device to shake, which may cause it to deviate from the position just determined.

[0006] 3. The steel wire is always in a tightened state during use, and the long-term stress on the steel wire leads to a short service life. This is an unavoidable problem of this type of locking structure;

[0007] 4. The structures of the clamping parts of the existing clamping devices that connect with the medical equipment are relatively simple. For some lighter instruments, the same locking method as that of heavy instruments must be used, which is time-consuming. Summary of the invention

[0008] 1. Technical issues to be resolved

[0009] In view of the deficiencies in the prior art, the present invention provides a clamp that solves the problems of the prior clamping device being prone to accidentally touching the locking switch and causing accidental loosening, being prone to shaking and displacement at the moment of locking, having a short life of the locking wire, and having a single structure of the clamping part.

[0010] (II) Technical solution

[0011] To achieve the above objectives, the present invention is implemented through the following technical solutions: a clamp, including a bottom box, the front wall and the rear wall of the bottom box are fixedly connected to a fixing frame, the inner wall of the fixing frame is provided with a waist-shaped hole, the right side wall of the bottom box is rotatably connected to a protective cover, the side of the bottom box away from the protective cover is fixedly connected to a power plug, the outer wall of the power plug penetrates through the side wall of the bottom box to the inner side, the inner side of the bottom box is provided with a power supply component and a switch component for controlling the power supply component, the end of the power plug extending into the inner side of the bottom box is electrically connected to the power supply component, the top of the bottom box is fixedly connected to a first connecting shaft, the end of the first connecting shaft away from the bottom box is rotatably connected to a flexible arm device and a locking component for fixing the flexible arm device, and the outer wall of the flexible arm device is sleeved An outer sheath is provided, and the material of the outer sheath is thermoplastic polyimide. The end of the flexible arm device away from the first connecting shaft is rotatably connected to the second connecting shaft, and the end of the second connecting shaft away from the flexible arm device is fixedly connected to the first clamping rod. The outer wall of the second connecting shaft is provided with an annular groove, and the annular groove is provided on the outer wall of the second connecting shaft and is located between the flexible arm device and the first clamping rod. A release button for controlling the locking assembly is provided on the inner side of the annular groove, and the release button is a push-to-disconnect self-resetting normally closed switch. The outer wall and top of the first clamping rod are provided with a clamping assembly and an anti-slip assembly to prevent the clamping assembly from slipping during use. The release button, locking assembly, power supply assembly, and switch assembly are all electrically connected through a spring cable.

[0012] Preferably, the power supply assembly includes a lithium battery pack and a transformer, and the lithium battery pack and the transformer are fixedly connected to the inner lower wall of the bottom box and are close to both sides, and the output voltage of the lithium battery pack and the transformer is 24 volts.

[0013] Preferably, the switch assembly includes a switch box and a power switch, the switch box is fixedly connected to the side wall of the bottom box provided with a protective cover, the outer wall of the switch box passes through the side wall of the bottom box, the switch box is arranged on the side wall of the bottom box and is covered by the protective cover, and the power switch is fixedly connected to the inner wall of the switch box.

[0014] Preferably, the flexible arm device includes multiple groups of joints, ball head connecting rods, and inner sleeves. The multiple groups of joints are composed of a group of support sleeves and two groups of end covers. The two groups of end covers are respectively fixedly connected to the upper and lower ends of the support sleeves. The multiple groups of ball head connecting rods are respectively rotatably connected between two adjacent groups of the multiple groups of joints. The multiple groups of ball head connecting rods are composed of a middle cylinder and ball heads at both ends. The ball heads of the ball head connecting rods are rotatably connected to the inner walls of the end covers. The outer walls of the ball heads of the ball head connecting rods penetrate the end covers to the inner side of the support sleeves. Hexagonal blind holes are provided at both ends of the ball heads of the ball head connecting rods away from the middle cylinder.

[0015] Preferably, the multiple groups of inner sheaths are respectively sleeved on the multiple groups of joint outer walls, and the multiple groups of inner sheaths are made of stainless steel.

[0016] Preferably, the locking assembly includes multiple groups of magnetic powder and electromagnetic coils, the multiple groups of magnetic powder are respectively arranged in multiple groups of joint cavities, the magnetic powder covers the joint cavities, the multiple groups of electromagnetic coils are respectively sleeved on multiple groups of support sleeve outer walls, and the multiple groups of electromagnetic coils are electrically connected to the release button and switch assembly through spring cables.

[0017] Preferably, the clamping assembly includes a light-load spring clip and a heavy-load fixing clip, the light-load spring clip is fixedly connected to the end of the first clamping rod away from the second connecting shaft, the outer wall of the first clamping rod is fixedly connected to a fixing block, the fixing block is arranged on the outer wall of the first clamping rod and is located between the light-load spring clip and the second connecting shaft, the inner wall of one end of the fixing block away from the first clamping rod is fixedly connected to the second clamping rod, the heavy-load fixing clip is fixedly connected to the end of the second clamping rod away from the fixing block, and the outer wall of the heavy-load fixing clip is provided with a quick-release screw for locking the heavy-load fixing clip.

[0018] Preferably, the anti-slip assembly includes an anti-slip sleeve, a first anti-slip pad, and a second anti-slip pad. The anti-slip sleeve is arranged on the outer wall of the light-load spring clamp handle, the first anti-slip pad is fixedly connected to the inner wall of the light-load spring clamp clamp, and the second anti-slip pad is fixedly connected to the inner wall of the heavy-load fixed clamp clamp.

[0019] Working principle: The lithium battery pack inside the bottom box comes with a common adapter circuit on the market, which can freely switch between external power supply or lithium battery power supply according to the power status of the power plug. The protective cover set on the side wall of the bottom box protects the power switch to avoid accidental contact during use. After power is turned on, the magnetic powder in the joint is solidified by the magnetism generated by the electromagnetic coil, and the joint and the ball head connecting rod are fixed as a whole. When the position needs to be adjusted, hold the second connecting shaft in the posture of holding a pen to write, and press the release button hidden in the inner wall of the ring groove with your thumb. When releasing the button, press the disconnected normally closed switch. After pressing, the electromagnetic coil is powered off and loses its magnetism, and the magnetic powder returns to a loose powder state. At this time, the position of multiple groups of joints can be easily adjusted. After the traction is guided to the correct position, the thumb releases the release button and the electromagnetic coil is again When electricity is turned on, magnetism is generated, and the magnetic powder is solidified by magnetism, fixing the joint and the ball head connecting rod again. Because the inner wall of the ball head end of the ball head connecting rod is provided with a hexagonal blind hole, the hexagonal blind hole is also full of magnetic powder. After electricity is turned on and magnetized, the magnetic powder inside the hexagonal blind hole and the magnetic powder inside the support sleeve are solidified into one, so that the ball head connecting rod and the joint cannot rotate in any direction. The locking method is very stable. The stainless steel inner sheath arranged on the outer wall of the joint plays a role of shielding magnetism, preventing the magnetism generated by the electromagnetic coil from affecting other external equipment, and also preventing external electromagnetic signals from affecting the magnetized state of the magnetic powder, and playing a bidirectional shielding role. The clamping component can be freely selected according to the weight of the device to be clamped, with higher flexibility. The anti-slip component can prevent the clamping component from slipping during the clamping process.

[0020] (III) Beneficial effects

[0021] The present invention provides a clamp having the following beneficial effects:

[0022] 1. The clamp uses a built-in release button to turn the locking component on and off, which is not easily touched by mistake and is safer to use;

[0023] 2. The clamp uses magnetic powder as the locking medium, and locks and releases through the characteristics of magnetic powder being hardened by magnetism and loosened by demagnetization. There is no noise when in use, no vibration when fixed, no displacement of the position at the moment of locking, and a long service life;

[0024] 3. The gripper comes with a lithium battery and can also be powered by mains electricity. The power supply voltage is 24 volts, which is within the safe range. No gas source is required, which is very convenient.

[0025] 4. The clamping components can be selected according to instruments of different weights. When clamping light instruments, hold the handle of the light-load spring clamp to squeeze the spring to open the clamp, put the instrument in the clamp and release your hand to fix the instrument by the elastic force of the built-in spring. When clamping heavy instruments, use the heavy-load fixing clamp. Anti-slip pads are provided on the clamping openings of the light-load spring clamp and the heavy-load fixing clamp to prevent the clamping part from slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 For the present invention Figure 1 -A partial enlarged view;

[0028] Figure 3 It is a partial cross-sectional view of the connection structure between the flexible arm device and the locking assembly of the present invention;

[0029] Figure 4 It is a schematic diagram of the ball head connecting rod structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the light-load spring clip of the present invention;

[0031] Figure 6 This is a schematic diagram of a heavy-load fixing clamp of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the fixing frame of the present invention;

[0033] Figure 8 It is a cross-sectional view of the inner structure of the bottom box of the present invention.

[0034] Among them, 1. bottom box; 2. fixing frame; 3. protective cover; 4. power plug; 5. first connecting shaft; 6. outer sheath; 7. second connecting shaft; 8. first clamping rod; 9. light load spring clip; 10. fixing block; 11. second clamping rod; 12. heavy load fixing clip; 13. quick release screw; 14. support sleeve; 15. end cover; 16. ball head connecting rod; 17. magnetic powder; 18. electromagnetic coil; 19. spring cable; 20. inner sheath; 21. hexagonal blind hole; 22. anti-slip sleeve; 23. first anti-slip pad; 24. second anti-slip pad; 25. waist-shaped hole; 26. lithium battery pack; 27. switch box; 28. power switch; 29. ​​transformer; 30. ring groove; 31. release button. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0036] like Figure 1-8As shown, an embodiment of the present invention provides a clamp, including a bottom box 1, the front wall and the rear wall of the bottom box 1 are fixedly connected to a fixing frame 2, the inner wall of the fixing frame 2 is provided with a waist-shaped hole 25, the right side wall of the bottom box 1 is rotatably connected to a protective cover 3, the side of the bottom box 1 away from the protective cover 3 is fixedly connected to a power plug 4, the outer wall of the power plug 4 penetrates the side wall of the bottom box 1 to the inner side, the inner side of the bottom box 1 is provided with a power supply component and a switch component for controlling the power supply component, the end of the power plug 4 extending into the inner side of the bottom box 1 is electrically connected to the power supply component, the top of the bottom box 1 is fixedly connected to a first connecting shaft 5, the end of the first connecting shaft 5 away from the bottom box 1 is rotatably connected to a flexible arm device and a locking component for fixing the flexible arm device, the outer wall of the flexible arm device is provided with an outer sheath 6, The outer sheath 6 is made of thermoplastic polyimide, and the end of the flexible arm device away from the first connecting shaft 5 is rotatably connected to the second connecting shaft 7, and the end of the second connecting shaft 7 away from the flexible arm device is fixedly connected to the first clamping rod 8. The outer wall of the second connecting shaft 7 is provided with an annular groove 30, and the annular groove 30 is provided on the outer wall of the second connecting shaft 7 and is located between the flexible arm device and the first clamping rod 8. A release button 31 for controlling the locking assembly is provided on the inner side of the annular groove 30. The release button 31 is a push-to-disconnect self-resetting normally closed switch. The outer wall and top of the first clamping rod 8 are provided with a clamping assembly and an anti-slip assembly to prevent the clamping assembly from slipping during use. The release button 31, the locking assembly, the power supply assembly, and the switch assembly are all electrically connected through a spring cable 19.

[0037] The power supply assembly includes a lithium battery pack 26 and a transformer 29. The lithium battery pack 26 and the transformer 29 are fixedly connected to the lower inner wall of the bottom box 1 and are close to both sides. The output voltage of the lithium battery pack 26 and the transformer 29 are both 24 volts. They operate at a low voltage of 24 volts, which is safer to use. The lithium battery pack 26 comes with a common adapter circuit on the market, and can be switched to use the power plug 4 to connect to an external power supply or use the lithium battery pack 26 to power when the power plug 4 is out of power.

[0038] The switch assembly includes a switch box 27 and a power switch 28. The switch box 27 is fixedly connected to the side wall of the bottom box 1 provided with a protective cover 3. The outer wall of the switch box 27 passes through the side wall of the bottom box 1. The switch box 27 is set on the side wall of the bottom box 1 and is covered by the protective cover 3. The power switch 28 is fixedly connected to the inner wall of the switch box 27. The power switch 28 is protected on the inside by the protective cover 3 that can be rotatably opened to avoid accidental contact.

[0039] The flexible arm device includes multiple groups of joints, ball head connecting rods 16, and inner sleeves 20. The multiple groups of joints are composed of a group of support sleeves 14 and two groups of end covers 15. The two groups of end covers 15 are respectively fixedly connected to the upper and lower ends of the support sleeves 14. The multiple groups of ball head connecting rods 16 are respectively rotatably connected between two adjacent groups of multiple groups of joints. The multiple groups of ball head connecting rods 16 are composed of an intermediate cylinder and ball heads at both ends. The ball heads of the ball head connecting rods 16 are rotatably connected to the inner wall of the end cover 15. The outer wall of the ball head of the ball head connecting rod 16 penetrates the end cover 15 to the inner side of the support sleeve 14. Hexagonal blind holes 21 are provided at both ends of the ball head of the ball head connecting rod 16 away from the intermediate cylinder. The hexagonal blind holes 21 provided on the inner wall of the ball head of the ball head connecting rod 16 are also covered with magnetic powder 17 on the inside. When hardened by magnetism, it is equivalent to forming a fixing pin. The ball head connecting rod 16 is restricted and cannot rotate at any angle.

[0040] Multiple groups of inner sheaths 20 are respectively sleeved on multiple groups of joint outer walls. The material of the multiple groups of inner sheaths 20 is stainless steel. The stainless steel inner sheaths 20 play a role in shielding magnetism, preventing the magnetism generated by the electromagnetic coil 18 from affecting other external equipment, and also preventing external electromagnetic signals from affecting the magnetized state of the magnetic powder 17, playing a bidirectional shielding role.

[0041] The locking assembly includes multiple groups of magnetic powder 17 and electromagnetic coils 18. The multiple groups of magnetic powder 17 are respectively arranged in the multiple groups of joint cavities, and the magnetic powder 17 covers the joint cavities. The multiple groups of electromagnetic coils 18 are respectively sleeved on the outer walls of the multiple groups of support sleeves 14. The multiple groups of electromagnetic coils 18 are electrically connected to the release button 31 and the switch assembly through the spring cable 19. The magnetic powder 17 solidifies after the electromagnetic coil 18 is energized to generate magnetism, forming a firmly connected whole between the joint and the ball head connecting rod 16. After the power is cut off, the electromagnetic coil 18 loses its magnetism, and the magnetic powder 17 returns to a loose powder state. At this time, the ball head connecting rod 16 can rotate without any hindrance.

[0042] The clamping assembly includes a light-load spring clip 9 and a heavy-load fixing clip 12. The light-load spring clip 9 is fixedly connected to the end of the first clamping rod 8 away from the second connecting shaft 7. The outer wall of the first clamping rod 8 is fixedly connected to a fixing block 10. The fixing block 10 is arranged on the outer wall of the first clamping rod 8 and is located between the light-load spring clip 9 and the second connecting shaft 7. The inner wall of one end of the fixing block 10 away from the first clamping rod 8 is fixedly connected to the second clamping rod 11. The heavy-load fixing clip 12 is fixedly connected to the end of the second clamping rod 11 away from the fixing block 10. The outer wall of the heavy-load fixing clip 12 is provided with a quick-release screw 13 for locking the heavy-load fixing clip 12. The set clamping assembly can be freely selected according to the weight of the instrument to be clamped, which is more flexible.

[0043] The anti-slip assembly includes an anti-slip sleeve 22, a first anti-slip pad 23, and a second anti-slip pad 24. The anti-slip sleeve 22 is sleeved on the outer wall of the handle of the light-load spring clamp 9, the first anti-slip pad 23 is fixedly connected to the inner wall of the clamping opening of the light-load spring clamp 9, and the second anti-slip pad 24 is fixedly connected to the inner wall of the clamping opening of the heavy-load fixed clamp 12. The anti-slip assembly can prevent the clamping assembly from slipping during the clamping process.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A holder, comprising a bottom box (1), characterized in that: The front wall and the rear wall of the bottom box (1) are both fixedly connected to a fixing frame (2), the inner wall of the fixing frame (2) is provided with a waist-shaped hole (25), the right side wall of the bottom box (1) is rotatably connected to a protective cover (3), the side of the bottom box (1) away from the protective cover (3) is fixedly connected to a power plug (4), the outer wall of the power plug (4) penetrates through the side wall of the bottom box (1) to the inner side, the inner side of the bottom box (1) is provided with a power supply component and a switch component for controlling the power supply component, the end of the power plug (4) extending into the inner side of the bottom box (1) is electrically connected to the power supply component, the top of the bottom box (1) is fixedly connected to a first connecting shaft (5), the end of the first connecting shaft (5) away from the bottom box (1) is rotatably connected to a flexible arm device and a locking component for fixing the flexible arm device, the outer wall of the flexible arm device is provided with an outer sheath (6), the outer sheath (6 ) is made of thermoplastic polyimide, one end of the flexible arm device away from the first connecting shaft (5) is rotatably connected to the second connecting shaft (7), one end of the second connecting shaft (7) away from the flexible arm device is fixedly connected to the first clamping rod (8), the outer wall of the second connecting shaft (7) is provided with an annular groove (30), the annular groove (30) is provided on the outer wall of the second connecting shaft (7) and is located between the flexible arm device and the first clamping rod (8), a release button (31) for controlling the locking component is provided on the inner side of the annular groove (30), the release button (31) is a push-off type self-resetting normally closed switch, the outer wall and top of the first clamping rod (8) are provided with a clamping component and an anti-skid component for preventing the clamping component from slipping during use, the release button (31), the locking component, the power supply component, and the switch component are all electrically connected via a spring cable (19); The flexible arm device comprises a plurality of joints, a ball head connecting rod (16), and an inner sleeve (20). The plurality of joints are each composed of a group of support sleeves (14) and two groups of end covers (15). The two groups of end covers (15) are respectively fixedly connected to the upper and lower ends of the support sleeves (14). The plurality of ball head connecting rods (16) are respectively rotatably connected between two adjacent groups of joints. The plurality of ball head connecting rods (16) are each composed of a middle cylinder and ball heads at both ends. The ball heads of the ball head connecting rods (16) are rotatably connected to the inner wall of the end cover (15). The outer wall of the ball head of the ball head connecting rod (16) penetrates the end cover (15) to the inner side of the support sleeve (14). Both ends of the ball head of the ball head connecting rod (16) away from the middle cylinder are provided with hexagonal blind holes (21). The locking assembly comprises a plurality of groups of magnetic powder (17) and electromagnetic coils (18); the plurality of groups of magnetic powder (17) are respectively arranged in the plurality of groups of joint cavities, the magnetic powder (17) covers the joint cavities, the plurality of groups of electromagnetic coils (18) are respectively sleeved on the outer walls of the plurality of groups of support sleeves (14), and the plurality of groups of electromagnetic coils (18) are electrically connected to the release button (31) and the switch assembly via a spring cable (19).

2. The clamp according to claim 1, characterized in that: The power supply assembly comprises a lithium battery pack (26) and a transformer (29). The lithium battery pack (26) and the transformer (29) are both fixedly connected to the lower wall of the inner side of the bottom box (1) and close to two sides respectively. The output voltage of the lithium battery pack (26) and the transformer (29) is 24 volts.

3. The clamp according to claim 1, characterized in that: The switch assembly comprises a switch box (27) and a power switch (28); the switch box (27) is fixedly connected to a side wall of a bottom box (1) provided with a protective cover (3); an outer wall of the switch box (27) penetrates the side wall of the bottom box (1); the switch box (27) is arranged on the side wall of the bottom box (1) and is covered by the protective cover (3); and the power switch (28) is fixedly connected to an inner wall of the switch box (27).

4. The clamp according to claim 1, characterized in that: The multiple groups of inner sheaths (20) are respectively sleeved on the multiple groups of joint outer walls, and the multiple groups of inner sheaths (20) are made of stainless steel.

5. The clamp according to claim 1, characterized in that: The clamping assembly comprises a light-load spring clamp (9) and a heavy-load fixing clamp (12), wherein the light-load spring clamp (9) is fixedly connected to an end of a first clamping rod (8) away from a second connecting shaft (7), a fixing block (10) is fixedly connected to an outer wall of the first clamping rod (8), the fixing block (10) is arranged on the outer wall of the first clamping rod (8) and is located between the light-load spring clamp (9) and the second connecting shaft (7), a second clamping rod (11) is fixedly connected to an inner wall of an end of the fixing block (10) away from the first clamping rod (8), the heavy-load fixing clamp (12) is fixedly connected to an end of the second clamping rod (11) away from the fixing block (10), and a quick-release screw (13) for locking the heavy-load fixing clamp (12) is arranged on an outer wall of the heavy-load fixing clamp (12).

6. The holder according to claim 1, characterized in that: The anti-skid assembly comprises an anti-skid sleeve (22), a first anti-skid pad (23), and a second anti-skid pad (24); the anti-skid sleeve (22) is sleeved on the outer wall of the handle of the light-load spring clamp (9); the first anti-skid pad (23) is fixedly connected to the inner wall of the clamping opening of the light-load spring clamp (9); and the second anti-skid pad (24) is fixedly connected to the inner wall of the clamping opening of the heavy-load fixed clamp (12).

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