Medical surgical instrument fixing device

Abstract

The present application belongs to the field of medical devices, and in particular relates to a medical surgical instrument fixing device, comprising a carrier, an external fixing assembly, a serpentine arm, a stretching device, and a clamping assembly. The serpentine arm and the stretching device are both arranged on the carrier. The clamping assembly for clamping the surgical instrument is arranged at the end of the serpentine arm away from the carrier. The external fixing assembly is used to fix the carrier to the outside. During use, when the connecting wire in the serpentine arm is in a loose state, the posture of the serpentine arm is adjusted so that the surgical instrument clamped by the clamping assembly at the front end of the serpentine arm reaches the required position and angle. The connecting wire is then tightened by the stretching device to fix the posture of the serpentine arm. The use of this medical surgical instrument fixing device allows the surgical instrument to be adjusted in any full range of freedom. While the adjustment is convenient and free from any external interference, it can completely replace the medical personnel who support the instrument, saving human resources and effectively saving space resources in the limited space of the surgical operation area.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a fixing device for medical surgical instruments. Background Art

[0002] During traditional surgeries or examinations, specialized medical personnel are typically assigned to support surgical instruments or medical examination equipment. This increases the number of personnel involved, not only occupying limited surgical space but also requiring them to maintain a bent arm position for extended periods. This can cause muscle soreness and fatigue, affecting the stability of surgical instruments and ultimately impacting the progress and quality of the procedure. Furthermore, in ultrasound examinations, medical technicians must manually secure instruments and accessories for extended periods of time to thoroughly examine the lesion site and symptoms. This labor-intensive process impacts both examination efficiency and quality.

[0003] Therefore, in medical surgery and examination, there is an urgent need for a reliable and easy-to-operate fixing device that is suitable for clamping and fixing surgical medical instruments, equipment and ultrasonic instruments, to provide a guarantee for improving the quality of medical services. Summary of the Invention

[0004] The embodiment of the present application provides a medical surgical instrument fixing device, which can replace medical technicians in supporting surgical instruments or medical examination equipment, and is convenient for adjustment and free from external interference.

[0005] To achieve the above-mentioned purpose, the present application provides a medical surgical instrument fixation device, comprising a carrier, an external fixation assembly, a serpentine arm, a stretching device, and a clamping assembly;

[0006] The external fixing assembly is provided on the carrier and is used to install and fix the carrier externally;

[0007] The serpentine arm includes a proximal connecting ball head, a distal connecting ball head, multiple double ball joints, multiple joint connection components and a connecting wire. The multiple double ball joints are arranged in sequence from the proximal connecting ball head to the distal connecting ball head. The proximal connecting ball head and the adjacent double ball joints, the distal connecting ball head and the adjacent double ball joints, and the two adjacent double ball joints are connected by a joint connection component respectively; the proximal connecting ball head is arranged on the carrier, and the clamping component is arranged on the distal connecting ball head and is used to clamp surgical instruments; the joint connection component includes a shell, a conical sliding part, an elastic reset part and two abutting blocks, and the opposite ends of the shell are provided with spherical grooves, the two spherical grooves are respectively rotatably connected to the ball heads of the two adjacent double ball joints, and the shell is provided with The two spherical grooves are connected to each other in an installation cavity, and the two abutting blocks are relatively arranged in the installation cavity, and the relative outer sides of the two abutting blocks are respectively close to the ball heads in the two spherical grooves, and a tapered channel is formed between the relative inner sides of the two abutting blocks, and the tapered sliding member passes through and is slidably arranged in the tapered channel, and the elastic reset member is arranged between the large end of the tapered sliding member and the shell, and is used to apply an elastic force to the tapered sliding member to make it disengage from the two abutting blocks, and the small end of the tapered sliding member extends out of the shell and is provided with a threading ring, and the outer wall of the shell is provided with a threading hole, one end of the connecting wire is fixed to the distal connecting ball head, and the other end passes through the threading ring of the small end of the tapered sliding member in each of the joint connection components and the threading hole on the shell in sequence from the distal end to the proximal end, and is connected to the stretching device arranged on the carrier;

[0008] The stretching device is used to pull or loosen the connecting wire. When the connecting wire is in a relaxed state, the conical sliding member is disengaged from the push block under the action of the elastic reset member, and the double ball joint and the spherical groove can rotate relative to each other to adjust the posture of the serpentine arm; when the connecting wire is in a stretched state, the conical sliding member overcomes the elastic force of the elastic reset member and pushes the push block under the pulling of the connecting wire, and the push block pushes the ball head located in the spherical groove, so that the double ball joint and the spherical groove are relatively stationary, so that the posture of the serpentine arm is fixed.

[0009] Optionally, the housing includes a first shell, a second shell and a locking piece, the first shell and the second shell are connected by the locking piece, and the two spherical grooves and the installation cavity connecting the two spherical grooves are formed by the first shell and the second shell.

[0010] Optionally, the large end and the small end of the conical sliding member are both provided with axial limiting portions, the spacing between the two axial limiting portions in the axial direction of the conical sliding member is greater than the length of the conical channel, and the elastic reset member is arranged between the axial limiting portion of the large end of the conical sliding member and the side surfaces of the two abutting blocks.

[0011] Optionally, the stretching device includes a driving motor and a transmission mechanism connected to the driving motor, the transmission mechanism includes a first bevel gear, a second bevel gear, a first slider, a second slider, a connecting rod, a connecting block and a connecting pin, the driving motor is installed on the carrier, the first bevel gear is arranged on the motor shaft of the driving motor, the second bevel gear is rotatably arranged on the carrier and meshes with the first bevel gear, the first slider is slidably arranged on the carrier back and forth, and the second slider is slidably arranged on the carrier left and right; the front end of the first slider is inclined with a bar hole, the connecting pin is arranged in the bar hole and The first slider is connected to the second slider, and the side surface of the first slider is provided with helical teeth meshing with the second helical gear. The first slider can slide back and forth under the drive of the second helical gear, and then drive the second slider to slide left and right through the connecting pin in the bar hole; the connecting block is arranged on the carrier for sliding left and right and is connected to the second slider through the connecting rod; a through hole is provided on the connecting block that passes through the front and back, and the end of the connecting wire away from the distal connecting ball head passes through the through hole and is fixed to the carrier, and the connecting block can slide left and right under the drive of the second slider, thereby pulling or loosening the connecting wire.

[0012] Optionally, the carrier is also provided with a connecting wire fixing assembly, a first pulley and a second pulley, and the end of the connecting wire away from the distal connecting ball head passes through the through hole and is fixed to the connecting wire fixing assembly, and the first pulley and the second pulley are rotatably arranged on the carrier at the front and rear ends of the connecting block respectively, and when the connecting wire switches between the relaxed and stretched states, the connecting wire slides in contact with the first pulley and the second pulley.

[0013] Optionally, the stretching device further includes a control switch electrically connected to the drive motor, and the control switch is a hand-controlled switch or a foot-controlled switch.

[0014] Optionally, the carrier is a shell-like structure, the stretching device is arranged inside the shell-like structure, the shell-like structure is provided with a through hole for the connecting wire to pass through, and the end of the connecting wire away from the distal connecting ball head passes through the through hole and is connected to the stretching device.

[0015] Optionally, the connecting wire is a flexible metal wire.

[0016] Optionally, the external fixing assembly is mounted on the carrier via a locking assembly, and the direction of the external fixing assembly can be adjusted relative to the carrier.

[0017] Optionally, the clamping assembly includes a base, a fixed clamping clamp, a movable clamping clamp, an adjusting screw and a handle, the base is connected to the distal connecting ball head, the base is provided with a sliding groove, the fixed clamping clamp is fixed to the base at one end of the sliding groove, the movable clamping clamp is slidably set in the sliding groove, the part of the movable clamp located in the sliding groove is provided with a threaded hole, the adjusting screw is rotatably set in the sliding groove and passes through the threaded hole, one end of the adjusting screw extends out of the sliding groove and is connected to the handle, and the movable clamp can be moved closer to or away from the fixed clamp by rotating the handle.

[0018] The beneficial effects of the medical surgical instrument fixation device provided by the present application are as follows: Compared with the prior art, the medical surgical instrument fixation device of the present application includes a carrier, an external fixation assembly, a serpentine arm, a stretching device, and a clamping assembly. The serpentine arm and the stretching device are both disposed on the carrier. The clamping assembly for clamping the surgical instrument is disposed at the end of the serpentine arm away from the carrier. The external fixation assembly is used to secure the carrier to an external location (such as a hospital bed, an operating table, etc.). During use, when the connecting wire in the serpentine arm is in a loose state, the posture of the serpentine arm is adjusted so that the surgical instrument clamped by the clamping assembly at the front end of the serpentine arm reaches the desired position and angle. The connecting wire is then tightened by the stretching device to fix the posture of the serpentine arm. The medical surgical instrument fixation device can be used to adjust the surgical instrument in any degree of freedom in all directions. The adjustment is convenient and free of any external interference. It can completely replace medical personnel who support the instrument, saving human resources and effectively conserving space resources in the limited surgical operation area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] in:

[0021] Figure 1 1 is a schematic structural diagram of a medical surgical instrument fixing device according to an embodiment of the present application;

[0022] Figure 2 This is a schematic cross-sectional view of a serpentine arm in a medical surgical instrument fixing device according to an embodiment of the present application;

[0023] Figure 3 This is a partial cross-sectional structural diagram of a serpentine arm of a medical surgical instrument fixing device shown in an embodiment of the present application, in which the connecting wire is in a relaxed state;

[0024] Figure 4 This is a partial cross-sectional structural diagram of a connecting wire in a stretched state in a serpentine arm of a medical surgical instrument fixing device shown in one embodiment of the present application;

[0025] Figure 5 This is a schematic diagram of a partially exploded structure of a serpentine arm of a medical surgical instrument fixing device according to one embodiment of the present application;

[0026] Figure 6 This is a schematic diagram of the internal structure of a carrier in a medical surgical instrument fixing device according to an embodiment of the present application;

[0027] Figure 7 This is a partial exploded schematic diagram of the internal structure of a carrier in a medical surgical instrument fixing device according to one embodiment of the present application;

[0028] Figure 8 This is a schematic diagram of a partially exploded structure of a transmission mechanism of a stretching device in a medical surgical instrument fixing device according to an embodiment of the present application;

[0029] Figure 9 This is a schematic structural diagram of an external fixation component in a medical surgical instrument fixation device according to one embodiment of the present application;

[0030] Figure 10 yes Figure 9 The exploded schematic diagram of a portion of the structure of the external fixing assembly shown;

[0031] Figure 11 1 is a schematic structural diagram of a locking assembly in a medical surgical instrument fixing device according to an embodiment of the present application;

[0032] Figure 12 yes Figure 11 The exploded structural diagram of the locking assembly shown;

[0033] Figure 13 1 is a schematic structural diagram of a clamping assembly in a medical surgical instrument fixing device according to an embodiment of the present application;

[0034] Figure 14 yes Figure 13 Schematic diagram of the exploded structure of the clamping assembly shown.

[0035] Description of main component symbols:

[0036] 100, carrier;

[0037] 200, external fixing assembly; 210, connecting plate; 220, C-type clamp; 230, scissor-type lifting structure;

[0038] 300, serpentine arm; 310, proximal connecting ball head; 320, distal connecting ball head; 330, double ball joint; 340, joint connection assembly; 341, housing; 34101, spherical groove; 34102, mounting cavity; 34103, threading hole; 3411, first housing; 3412, second housing; 3413, locking member; 342, tapered sliding member; 3421, threading ring; 343, elastic return member; 344, abutment block; 350, connecting wire;

[0039] 400, stretching device; 410, drive motor; 420, transmission mechanism; 421, first bevel gear; 422, second bevel gear; 423, first slider; 4231, strip hole; 424, second slider; 425, connecting rod; 426, connecting block; 4261, through hole; 427, connecting pin; 428, first base; 429, first top plate; 430, second base; 431, second top plate;

[0040] 500, clamping assembly; 510, base; 511, sliding groove; 520, fixed clamping clamp; 530, movable clamping clamp; 531, threaded hole; 540, adjusting screw; 550, handle;

[0041] 600, connecting wire fixing assembly;

[0042] 700, first pulley;

[0043] 800, second pulley;

[0044] 900, locking assembly; 910, U-shaped holder; 920, threaded adjustment rod; 930, top block; 940, turning handle. DETAILED DESCRIPTION

[0045] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many other forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0046] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0047] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0050] It should also be noted that, in the embodiments of the present application, the same figure mark represents the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0051] The embodiment of the present application provides a medical surgical instrument fixing device, such as Figure 1-Figure 4 As shown, the medical surgical instrument fixing device includes a carrier 100, an external fixing assembly 200, a serpentine arm 300, a stretching device 400, and a clamping assembly 500. The external fixing assembly 200 is disposed on the carrier 100 and is used to mount and fix the carrier 100 to an external device (such as a hospital bed, an operating table, etc.).

[0052] The serpentine arm 300 includes a proximal connecting ball head 310, a distal connecting ball head 320, a plurality of double ball joints 330, a plurality of joint connection components 340 and a connecting wire 350, wherein the double ball joint 330 is formed by connecting two balls, and the plurality of double ball joints 330 are arranged in sequence from the proximal connecting ball head 310 to the distal connecting ball head 320, between the proximal connecting ball head 310 and its adjacent double ball joint 330, between the distal connecting ball head 320 and its adjacent double ball joint 330, and between two adjacent double ball joints. The joints 330 are connected by a joint connection assembly 340; the proximal connection ball head 310 is set on the carrier 100, and the clamping assembly 500 is set on the distal connection ball head 320 and is used to clamp the surgical instrument; the joint connection assembly 340 includes a shell 341, a conical sliding member 342, an elastic reset member 343 (such as a coil spring, a spring, etc.) and two abutting blocks 344. The opposite ends of the shell 341 are provided with spherical grooves 34101, and the two spherical grooves 34101 are respectively connected to the two adjacent double ball joints 33 0 ball head rotation connection, the housing 341 is provided with a mounting cavity 34102 communicating with the two spherical grooves 34101, the two top blocks 344 are relatively arranged in the mounting cavity 34102, the relative outer sides of the two top blocks 344 are respectively close to the ball heads in the two spherical grooves 34101, and a tapered channel is formed between the relative inner sides of the two top blocks 344. The tapered sliding member 342 passes through and is slidably arranged in the tapered channel. The elastic reset member 343 is arranged between the large end of the tapered sliding member 342 and the housing 341 and is used to reset the tapered sliding member. 342 applies an elastic force to disengage it from the two abutting blocks 344, the small end of the conical sliding member 342 extends out of the shell 341 and is provided with a threading ring 3421, the outer wall of the shell 341 is provided with a threading hole 34103, one end of the connecting wire 350 is fixed to the distal connecting ball head 320, and the other end passes through the threading ring 3421 at the small end of the conical sliding member 342 in each joint connection component 340 and the threading hole 34103 on the shell 341 from the distal end to the proximal end, and is connected to the stretching device 400 provided on the carrier 100.

[0053] The stretching device 400 is used to pull or loosen the connecting wire 350. Figure 3 As shown, when the connecting wire 350 is in a relaxed state, the conical sliding member 342 is disengaged from the abutting block 344 under the action of the elastic reset member 343, and the abutting block 344 is not subjected to the outward thrust of the conical sliding member 342. The double ball joint 330 and the spherical groove 34101 can rotate relative to each other to adjust the posture of the serpentine arm 300; Figure 4As shown, when the connecting wire 350 is in a stretched state, the conical sliding member 342 overcomes the elastic force of the elastic reset member 343 under the pull of the connecting wire 350 and pushes the push block 344, causing the push block 344 to slide outward, and the push block 344 pushes against the ball head located in the spherical groove 34101. At this time, the double ball joint 330 is subjected to an outward extrusion force, so that there is a large friction force between the ball head of the double ball joint 330 and the inner wall of the spherical groove 34101, so that the double ball joint 330 and the spherical groove 34101 are relatively stationary and cannot rotate relative to each other, so that the posture of the serpentine arm 300 is fixed.

[0054] In an embodiment of the present application, the medical surgical instrument fixing device includes a carrier 100, an external fixing component 200, a serpentine arm 300, a stretching device 400 and a clamping component 500. The serpentine arm 300 and the stretching device 400 are both arranged on the carrier 100. The clamping component 500 for clamping the surgical instrument is arranged at the end of the serpentine arm 300 away from the carrier 100. The external fixing component 200 is used to fix the carrier 100 to the outside (such as a hospital bed, an operating table, etc.). When in use, when the connecting wire 350 in the serpentine arm 300 is in a relaxed state, the posture of the serpentine arm 300 is adjusted so that the surgical instrument clamped by the clamping component 500 at the front end of the serpentine arm 300 reaches the required position and angle, and then the connecting wire 350 is tightened by the stretching device 400 to fix the posture of the serpentine arm 300. The medical surgical instrument fixing device can be used to adjust the surgical instrument in any all-round freedom. The adjustment is convenient and free from any external interference. It can completely replace the medical personnel who support the instrument, save human resources, and effectively save space resources in the limited space of the surgical operation area.

[0055] The connecting wire 350 is a flexible metal wire.

[0056] Preferably, combined Figure 5 As shown, the relative outer sides of the two abutting blocks 344 are both arc-shaped surfaces. This arrangement can increase the contact area between the abutting blocks 344 and the ball head after the connecting wire 350 is tightened.

[0057] In one embodiment, if Figure 5 As shown, the housing 341 includes a first shell 3411, a second shell 3412 and a locking piece 3413. The first shell 3411 and the second shell 3412 are connected by the locking piece 3413. The two spherical grooves 34101 and the installation cavity 34102 connecting the two spherical grooves 34101 are formed by the first shell 3411 and the second shell 3412.

[0058] The outer shell 341 is formed by assembling the first shell 3411 and the second shell 3412 via the locking member 3413 , so as to facilitate the assembly between the double ball joint 330 and the joint connection assembly 340 .

[0059] Specifically, the locking member 3413 is a screw, and the threading hole 34103 is set on the outside of the second shell 3412.

[0060] In one embodiment, if Figure 3 and Figure 4 As shown, the large end and the small end of the conical sliding member 342 are both provided with axial limiting parts, and the axial spacing between the two axial limiting parts in the conical sliding member 342 is greater than the length of the conical channel, and the elastic reset member 343 elastically presses between the axial limiting part of the large end of the conical sliding member 342 and the side surfaces of the two pressing blocks 344.

[0061] When the connecting wire 350 in the serpentine arm 300 is in a relaxed state, the axial limit portion of the small end of the conical sliding member 342 abuts against the right side of the two abutting blocks 344; after tightening the connecting wire 350, the axial limit portion of the large end of the conical sliding member 342 compresses the elastic reset member 343 to the right.

[0062] In one embodiment, if Figure 6-Figure 8 As shown, the stretching device 400 includes a driving motor 410 and a transmission mechanism 420 connected to the driving motor 410, the transmission mechanism 420 includes a first bevel gear 421, a second bevel gear 422, a first slider 423, a second slider 424, a connecting rod 425, a connecting block 426 and a connecting pin 427, the driving motor 410 is mounted on the carrier 100, the first bevel gear 421 is arranged on the motor shaft of the driving motor 410, the second bevel gear 422 is rotatably arranged on the carrier 100 and engaged with the first bevel gear 421, the first slider 423 is slidably arranged on the carrier 100 back and forth, and the second slider 424 is slidably arranged on the carrier 100 left and right; the front end of the first slider 423 is inclined with a bar hole 4231, and the connecting pin 427 is connected to the carrier 100. It is arranged in the bar hole 4231 and connected to the second slider 424. The side of the first slider 423 is provided with helical teeth meshing with the second helical gear 422. The first slider 423 can slide back and forth under the drive of the second helical gear 422, and then drive the second slider 424 to slide left and right through the connecting pin 427 in the bar hole 4231; the connecting block 426 is arranged on the carrier 100 for sliding left and right and is connected to the second slider 424 through the connecting rod 425; a through hole 4261 is provided on the connecting block 426, and the end of the connecting wire 350 away from the distal connecting ball head 320 passes through the through hole 4261 and is fixed on the carrier 100. The connecting block 426 can slide left and right under the drive of the second slider 424, thereby pulling or loosening the connecting wire 350.

[0063] With this arrangement, the stretching device 400 is self-locking. Even if the drive motor 410 suddenly loses power, in the absence of external force, the first bevel gear 421 and the second bevel gear 422 will not rotate, and the first and second sliders 423, 424, and the connecting block 426 will not move. This keeps the connecting wire 350 taut, keeping the serpentine arm 300 fixed in place at any position in space. The drive motor 410 controls the movement of the first bevel gear 421, the second bevel gear 422, the first slider 423, and the second slider 424, causing the connecting block 426 to move leftward and reset, loosening the connecting wire 350 and relaxing the serpentine arm 300.

[0064] Specifically, a first base 428 and a second base 430 are installed on the carrier 100 by screws, and a first top plate 429 and a second top plate 431 are fixed to the first base 428 and the second base 430 by screws respectively. A sliding groove for the first slider 423 to slide back and forth and a sliding groove for the second slider 424 to slide left and right are provided between the first base 428 and the first top plate 429, and a sliding groove for the connecting block 426 to slide left and right is provided between the second base 430 and the second top plate 431.

[0065] In a specific embodiment, Figure 6-Figure 8 As shown, a connecting wire fixing assembly 600, a first pulley 700 and a second pulley 800 are also provided on the carrier 100. The end of the connecting wire 350 away from the distal connecting ball head 320 passes through the through hole 4261 and is fixed to the connecting wire fixing assembly 600. The first pulley 700 and the second pulley 800 are respectively rotatably arranged on the carrier 100 at the front and rear ends of the connecting block 426. When the connecting wire 350 switches between the relaxed and stretched states, the connecting wire 350 slides in contact with the first pulley 700 and the second pulley 800.

[0066] The first pulley 700 and the second pulley 800 are provided to make the process of stretching the connecting wire 350 smoother.

[0067] Specifically, the connecting wire fixing assembly 600 includes a fixing base, a fixing gasket, and a fixing screw; the fixing base is connected to the carrier 100 using screws, and the fixing base is provided with a groove for placing the connecting wire 350. The connecting wire 350 passes through the through hole 4261 on the connecting block 426 and is placed in the groove; the fixing gasket is pressed on the connecting wire 350 and is fixed to the fixing base by a fixing screw.

[0068] In one embodiment, the stretching device 400 further includes a control switch (not shown in the figure) electrically connected to the drive motor 410, and the control switch is a hand-controlled switch or a foot-controlled switch.

[0069] In one embodiment, if Figure 1 and Figure 6-Figure 7As shown, the carrier 100 is a shell-like structure, and the stretching device 400 is disposed inside the shell-like structure. The shell-like structure is provided with a through hole for the connection wire 350 to pass through. The end of the connection wire 350 away from the distal connection ball head 320 passes through the through hole and is connected to the stretching device 400. The shell-like structure plays a protective role for the stretching device 400.

[0070] In one embodiment, if Figure 1 As shown, the external fixing assembly 200 is installed on the carrier 100 via the locking assembly 900 , and the direction of the external fixing assembly 200 can be adjusted relative to the carrier 100 .

[0071] Specifically, if Figure 9 and Figure 10 As shown, the external fixing assembly 200 includes a connecting plate 210, a C-type clamp 220 arranged on the connecting plate 210, and a scissor-type lifting structure 230 arranged on the inner side of one clamping arm of the C-type clamp 220. The external clamping fixation can be achieved by cooperating with the scissor-type lifting structure 230 and the other clamping arm of the C-type clamp 220.

[0072] like Figure 11 and Figure 12 As shown, the locking assembly 900 includes a U-shaped holder 910, a threaded adjustment rod 920, a top block 930, and a rotating handle 940. The U-shaped holder 910 is fixed to the carrier 100. The threaded adjustment rod 920 passes through one side arm of the U-shaped holder 910 and is threadedly connected to the side arm. The top block 930 is mounted on the end of the threaded adjustment rod 920 that extends into the U-shaped holder 910. The rotating handle 940 is mounted on the other end of the threaded adjustment rod 920. The connecting plate 210 of the external fixing assembly 200 is clamped in the U-shaped holder 910 and is clamped by the top block 930 at one end of the threaded adjustment rod 920.

[0073] In one embodiment, if Figure 1 and Figure 13-14 As shown, the clamping assembly 500 includes a base 510, a fixed clamping clamp 520, a movable clamping clamp 530, an adjusting screw 540 and a handle 550. The base 510 is connected to the distal connecting ball head 320. The base 510 is provided with a sliding groove 511. The fixed clamping clamp 520 is fixed to the base 510 at one end of the sliding groove 511. The movable clamping clamp 530 is slidably arranged in the sliding groove 511. The portion of the movable clamping clamp 530 located in the sliding groove 511 is provided with a threaded hole 531. The adjusting screw 540 is rotatably arranged in the sliding groove 511 and passes through the threaded hole 531. One end of the adjusting screw 540 extends out of the sliding groove 511 and is connected to the handle 550. By rotating the handle 550, the movable clamping clamp 530 can be moved closer to or away from the fixed clamping clamp 520. The surgical instrument can be clamped between the fixed clamping clamp 520 and the movable clamp 530.

[0074] Specifically, a threaded column is provided on the distal connecting ball head 320 , and a threaded hole is provided on the base 510 . The clamping assembly 500 is threadedly connected to the threaded column on the distal connecting ball head 320 through the threaded hole on the base 510 .

[0075] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A medical surgical instrument fixing device, characterized in that: It includes a carrier, an external fixation component, a serpentine arm, a stretching device and a clamping component; The external fixing assembly is provided on the carrier and is used to install and fix the carrier externally; The serpentine arm includes a proximal connecting ball head, a distal connecting ball head, multiple double ball joints, multiple joint connection components and a connecting wire. The multiple double ball joints are arranged in sequence from the proximal connecting ball head to the distal connecting ball head. The proximal connecting ball head and the adjacent double ball joints, the distal connecting ball head and the adjacent double ball joints, and the two adjacent double ball joints are connected by a joint connection component respectively; the proximal connecting ball head is arranged on the carrier, and the clamping component is arranged on the distal connecting ball head and is used to clamp surgical instruments; the joint connection component includes a shell, a conical sliding part, an elastic reset part and two abutting blocks, and the opposite ends of the shell are provided with spherical grooves, the two spherical grooves are respectively rotatably connected to the ball heads of the two adjacent double ball joints, and the shell is provided with The two spherical grooves are connected to each other in an installation cavity, and the two abutting blocks are relatively arranged in the installation cavity, and the relative outer sides of the two abutting blocks are respectively close to the ball heads in the two spherical grooves, and a tapered channel is formed between the relative inner sides of the two abutting blocks, and the tapered sliding member passes through and is slidably arranged in the tapered channel, and the elastic reset member is arranged between the large end of the tapered sliding member and the shell, and is used to apply an elastic force to the tapered sliding member to make it disengage from the two abutting blocks, and the small end of the tapered sliding member extends out of the shell and is provided with a threading ring, and the outer wall of the shell is provided with a threading hole, one end of the connecting wire is fixed to the distal connecting ball head, and the other end passes through the threading ring of the small end of the tapered sliding member in each of the joint connection components and the threading hole on the shell in sequence from the distal end to the proximal end, and is connected to the stretching device arranged on the carrier; The stretching device is used to pull or loosen the connecting wire. When the connecting wire is in a relaxed state, the conical sliding member is disengaged from the abutting block under the action of the elastic reset member, and the double ball joint and the spherical groove can rotate relative to each other to adjust the posture of the serpentine arm. When the connecting wire is in a stretched state, the conical sliding member overcomes the elastic force of the elastic reset member and pushes the push block under the pulling of the connecting wire. The push block pushes against the ball head located in the spherical groove, so that the double ball joint and the spherical groove are relatively stationary, so that the posture of the serpentine arm is fixed.

2. The medical surgical instrument fixing device according to claim 1, characterized in that: The housing includes a first shell, a second shell and a locking piece. The first shell and the second shell are connected by the locking piece. The two spherical grooves and the installation cavity connecting the two spherical grooves are formed by the first shell and the second shell.

3. The medical surgical instrument fixing device according to claim 1, characterized in that: The large end and the small end of the conical sliding member are both provided with axial limiting parts, and the distance between the two axial limiting parts in the axial direction of the conical sliding member is greater than the length of the conical channel. The elastic reset member is arranged between the axial limiting part of the large end of the conical sliding member and the side surfaces of the two abutting blocks.

4. The medical surgical instrument fixing device according to claim 1, characterized in that: The stretching device includes a drive motor and a transmission mechanism connected to the drive motor, the transmission mechanism including a first helical gear, a second helical gear, a first slider, a second slider, a connecting rod, a connecting block, and a connecting pin. The drive motor is mounted on the carrier, the first helical gear is disposed on the motor shaft of the drive motor, the second helical gear is rotatably disposed on the carrier and meshes with the first helical gear, the first slider is slidably disposed on the carrier, and the second slider is slidably disposed on the carrier; a strip-shaped hole is obliquely provided at the front end of the first slider, the connecting pin is disposed in the strip-shaped hole and connected to the second slider, and a side surface of the first slider is provided with helical teeth that mesh with the second helical gear. The first slider can slide forward and backward under the drive of the second helical gear, and then drive the second slider to slide left and right through the connecting pin in the strip-shaped hole; the connecting block is slidably disposed on the carrier and connected to the second slider through the connecting rod; a through hole is provided on the connecting block that passes through the through hole, an end of the connecting wire away from the distal connecting ball head passes through the through hole and is fixed to the carrier, and the connecting block can slide left and right under the drive of the second slider, thereby pulling or loosening the connecting wire.

5. The medical surgical instrument fixing device according to claim 4, characterized in that: The carrier is also provided with a connecting wire fixing assembly, a first pulley and a second pulley. The end of the connecting wire away from the distal connecting ball head passes through the through hole and is fixed to the connecting wire fixing assembly. The first pulley and the second pulley are rotatably arranged on the carrier at the front and rear ends of the connecting block respectively. When the connecting wire switches between the relaxed and stretched states, the connecting wire slides in contact with the first pulley and the second pulley.

6. The medical surgical instrument fixing device according to claim 4, characterized in that: The stretching device further includes a control switch electrically connected to the drive motor, and the control switch is a hand-controlled switch or a foot-controlled switch.

7. The medical surgical instrument fixing device according to claim 1, characterized in that: The carrier is a shell-like structure, the stretching device is arranged inside the shell-like structure, the shell-like structure is provided with a through hole for the connecting wire to pass through, and the end of the connecting wire away from the distal connecting ball head passes through the through hole and is connected to the stretching device.

8. The medical surgical instrument fixing device according to claim 1, characterized in that: The connecting wire is a flexible metal wire.

9. The medical surgical instrument fixing device according to claim 1, characterized in that: The external fixing assembly is mounted on the carrier via a locking assembly, and the direction of the external fixing assembly can be adjusted relative to the carrier.

10. The medical surgical instrument fixing device according to claim 1, characterized in that: The clamping assembly includes a base, a fixed clamping clamp, a movable clamping clamp, an adjusting screw and a handle. The base is connected to the distal connecting ball head, and a sliding groove is provided on the base. The fixed clamping clamp is fixed to the base at one end of the sliding groove. The movable clamp is slidably set in the sliding groove. The part of the movable clamp located in the sliding groove is provided with a threaded hole. The adjusting screw is rotatably set in the sliding groove and passes through the threaded hole. One end of the adjusting screw extends out of the sliding groove and is connected to the handle. By rotating the handle, the movable clamp can be moved closer to or away from the fixed clamp.

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