Integrated multi-stage control cervical vertebra traction device

Abstract

The application discloses an integrated multi-stage control cervical vertebra traction device, which comprises a bed body, a rotatable head fixing mechanism is slidably arranged at the head position of the bed body, the head fixing mechanism comprises a movable headrest which is slidably arranged on the bed body, a supporting ring which is fixedly connected with the movable headrest, and a front supporting ring and a rear supporting ring which are rotatably connected with the two ends of the supporting ring; a traction mechanism is arranged on the bed body, the traction mechanism comprises an upper sliding block which is rotatably connected with the movable headrest and a pulling rope which pulls the upper sliding block, and the upper sliding block is slidably clamped on an upper sliding frame; the upper sliding frame is fixedly connected with a movable cylinder, the movable cylinder is slidably clamped in a positioning cylinder, and the movable cylinder and the positioning cylinder are in gear engagement or are not in contact. In the application, the problem that the traction force is difficult to control and the traction direction cannot be adjusted in the cervical vertebra operation is solved, the front supporting ring is clamped at the chin position of a patient, the rear supporting ring is fixed on the head of the patient, and the fixing and protection effects are achieved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an integrated multi-level control cervical traction device. Background Technology

[0002] Cervical traction devices are used to prevent and treat nerve compression caused by cervical spondylosis, alleviate symptoms, and increase blood and oxygen supply to the brain. They are also commonly used for cervical immobilization, protection, and traction in patients with cervical deformities or injuries. Current technologies primarily employ traction methods that use suspended weights for tension. However, these methods are difficult to control in terms of traction force and weight adjustment. Furthermore, the risk of unexpected traction failures such as rope breakage or hook dislodgement during traction makes them inconvenient and somewhat dangerous. Additionally, the traction direction cannot be adjusted during cervical surgery. Therefore, we propose an integrated multi-level control cervical traction device to address these issues. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated multi-level control cervical traction device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an integrated multi-level control cervical traction device, comprising a bed body, wherein a rotatable head fixing mechanism is slidably installed at the head position of the bed body, the head fixing mechanism comprising a movable head pillow slidably disposed on the bed body, a support ring fixedly connected to the movable head pillow, and a front support ring and a rear support ring rotatably connected to both ends of the support ring;

[0005] The bed is equipped with a traction mechanism, which includes an upper slider rotatably connected to the movable headrest and a pull rope for pulling the upper slider. The upper slider is slidably engaged with an upper slide frame. A dovetail groove structure is formed inside the upper slide frame, and the upper slider slides inside the dovetail groove structure. A pull shaft is fixedly connected to one side of the upper slider. The pull shaft passes through the side wall of the upper slider and is fixedly connected to the pull rope. A tension spring is slidably sleeved on the pull shaft located in the dovetail groove structure.

[0006] The upper slide is fixedly connected to the movable cylinder via the upper connecting frame. The movable cylinder is slidably engaged in the positioning cylinder, and the movable cylinder and the positioning cylinder are either meshed by gears or do not contact each other.

[0007] A fixed shaft runs through both the movable cylinder and the positioning cylinder. The fixed shaft is fixedly installed on the fixed cylinder. The fixed cylinder is fixedly connected to the bed frame via a fixed bracket. A lower turntable is rotatably installed at the bottom of the fixed cylinder, and an upper turntable is rotatably installed on the movable cylinder. The pull rope passes sequentially around the upper turntable, the fixed shaft, and the lower turntable, and is then fixedly connected to the tensioner. The tensioner is fixedly connected to the lower slide block. The lower slide block is slidably engaged on the lower slide frame, and is rotatably connected to the end of the screw. The screw is rotatably installed on the lower slide frame via a threaded structure. The lower slide frame is fixedly connected to the bottom of the fixed cylinder.

[0008] Preferably, both the front and rear support rings adopt an arc-shaped, retractable soft-shell structure. Each ring consists of two arc-shaped fixed sections and one movable section. The fixed sections are slidably fitted onto both sides of the movable section, and the fixed and movable sections are connected by a pin structure. The end of the fixed section is rotatably mounted on the support ring. Specifically, pins are elastically installed on both sides of the movable section, and pin holes are evenly distributed on the fixed section, allowing the pins to slidably engage with different pin holes.

[0009] Preferably, locking bolts are provided at the rotatable connection points between the front support ring and the rear support ring and the supporting ring, and the front support ring and the rear support ring rotate around the locking bolts as the central axis.

[0010] Preferably, the fixed shaft extends vertically through the fixed cylinder, and a rotating shaft is provided at the top of the fixed shaft. The rotating shaft is rotatably connected to the movable cylinder, and the pull rope enters the rotating shaft through the opening at the top of the movable cylinder. An external toothed ring is fixedly sleeved at the bottom of the movable cylinder, and an internal toothed ring that meshes with the external toothed ring is installed at the bottom of the positioning cylinder. An inner groove is recessed on the side wall of the positioning cylinder above the internal toothed ring, and the inner groove does not contact the external toothed ring.

[0011] The positioning cylinder is movably sleeved on the fixed shaft, and a spring is movably sleeved on the fixed shaft. One end of the spring is fixedly connected to the positioning cylinder, and the other end is fixedly connected to the top of the fixed cylinder.

[0012] Preferably, the surface of the fixed shaft is provided with vertical ribs, the positioning cylinder is movably sleeved on the fixed shaft, and the positioning cylinder is provided with a groove that cooperates with the ribs.

[0013] Preferably, a snap-fit ​​structure is fixedly installed at the bottom of the positioning cylinder, and a limiting groove that mates with the snap-fit ​​structure is opened at the top of the fixed cylinder;

[0014] The locking structure includes a connecting piece fixed to the bottom of the positioning cylinder, an intermediate plate fixed to the bottom of the connecting piece, locking blocks rotatably connected to both sides of the intermediate plate, the inner side of the locking block being connected to the intermediate plate through a metal spring, an L-shaped lever fixedly connected to the top of the locking block, the end of the lever extending to the end of the connecting piece, and a hand-held part provided at the end of the connecting piece.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention solves the problems of difficulty in controlling traction force and inability to adjust traction direction in current cervical spine surgery. The front support ring is placed under the patient's chin, and the rear support ring is fixed to the patient's head. The support pad and head pad support the softer parts of the patient's head, which plays a role in fixation and protection. The patient's neck is pulled by the occipital-chin strap traction method.

[0017] When adjustments to the traction force on the patient's neck are needed, turn the screw to move the movable headrest via the pull rope. When the movable headrest moves away from the bed along the guide groove, the traction force on the patient's neck increases; when the movable headrest moves closer to the bed along the guide groove, the traction force on the patient's neck decreases.

[0018] When it is necessary to adjust the direction of the traction force on the patient's neck, pulling down the positioning cylinder inserts the locking structure into the limiting groove, causing the inner toothed ring on the positioning cylinder to disengage from the outer toothed ring on the movable cylinder. At this time, the inner groove on the positioning cylinder is aligned with the outer toothed ring on the movable cylinder, and the inner groove and the outer toothed ring do not contact each other. Thus, the movable cylinder can rotate freely on the rotating shaft to adjust the position of the upper slider. During the swinging of the upper slider, the movable headrest is also driven to swing, thereby changing the direction of the traction force to meet different needs in surgical operations. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram showing the connection between the traction mechanism and the bed body in this invention;

[0021] Figure 3 This is a schematic diagram of the traction mechanism in this invention;

[0022] Figure 4 This is a schematic diagram of the snap-in structure in this invention;

[0023] Figure 5 This is a schematic diagram of the head fixing mechanism in this invention;

[0024] In the diagram: 1. Bed frame; 101. Side headrest; 102. Guide groove;

[0025] 2. Headrest fixing mechanism; 21. Support ring; 22. Front support ring; 23. Rear support ring; 24. Support pad; 25. Head pad; 26. Locking bolt; 27. Movable headrest;

[0026] 3. Traction mechanism; 31. Movable cylinder; 3101. External gear ring; 32. Positioning cylinder; 3201. Internal gear ring; 3202. Inner groove; 3203. Cylinder cover; 33. Upper slide; 3301. Upper connecting frame; 34. Upper slider; 3401. Pull shaft; 3402. Tension spring; 35. Fixed cylinder; 3501. Limiting groove; 3502. Fixed frame; 3503. Lower connecting frame; 36. Fixed Shaft; 3601, Spring; 3602, Rib; 3603, Rotating Shaft; 37, Snap-in Structure; 371, Connecting Plate; 371a, Handheld Part; 372, Middle Plate; 373, Locking Block; 374, Metal Spring; 375, Paddle; 381, Upper Turntable; 382, ​​Lower Turntable; 39, Pull Rope; 310, Slide Frame; 311, Puller; 312, Lower Slider; 313, Screw. Detailed Implementation

[0027] The technical solutions of the present invention will now be described in conjunction with the accompanying drawings and embodiments.

[0028] Please see Figure 1-5 The present invention provides a technical solution: an integrated multi-level control cervical traction device, including a bed 1, a rotatable head fixing mechanism 2 slidably installed at the head position of the bed 1, the head fixing mechanism 2 including a movable head pillow 27 slidably disposed on the bed 1, a support ring 21 fixedly connected to the movable head pillow 27, and a front support ring 22 and a rear support ring 23 rotatably connected to both ends of the support ring 21.

[0029] Side headrests 101 are provided on both sides of the head position of the bed 1. A guide groove 102 is provided in the middle of the bed 1. A limit block is slidably engaged in the guide groove 102. The limit block is rotatably connected to the bottom of the movable headrest 27 through a rotating shaft.

[0030] like Figure 1 and 5 As shown, the front support ring 22 is positioned under the patient's chin, and the rear support ring 23 is fixed to the underside of the patient's head. Both the front support ring 22 and the rear support ring 23, which are in contact with the patient's chin and head, are equipped with support pads 24. A head pad 25 is provided at the bottom of the support ring 21. The support pads 24 and the head pad 25 support the softer parts of the patient's head, thus providing protection.

[0031] In one embodiment of the present invention, both the front support ring 22 and the rear support ring 23 adopt an arc-shaped, retractable soft shell structure. Both the front support ring 22 and the rear support ring 23 consist of two arc-shaped fixed sections and one movable section. The fixed sections are slidably fitted onto both sides of the movable section, and the fixed sections and the movable section are connected by a pin structure. The end of the fixed section is rotatably mounted on the support ring 21. Specifically, pins are elastically installed on both sides of the movable section, and pin holes are evenly distributed on the fixed section, allowing the pins to slidably engage with different pin holes.

[0032] By squeezing the pin inward, it can be disengaged from the pin hole, facilitating the movement of the fixed section. This allows the size of the front support ring 22 and the rear support ring 23 to be adjusted according to the head size of different patients, ensuring that the front support ring 22 and the rear support ring 23 can be stably fixed on the patient's head and ensuring the stability of the occipital-jaw traction method.

[0033] Locking bolts 26 are provided at the rotatable connection points between the front support ring 22 and the rear support ring 23 and the support ring 21. The front support ring 22 and the rear support ring 23 rotate around the locking bolts 26 as the central axis. The locking bolts 26 adopt a conventional bolt structure in the art. By tightening the locking bolts 26, the front support ring 22 and the rear support ring 23 can be fixed to the support ring 21 respectively, preventing the front support ring 22 and the rear support ring 23 from rotating freely on the support ring 21.

[0034] like Figure 1-3 As shown, a traction mechanism 3 is installed on the bed frame 1. The traction mechanism 3 includes an upper slider 34 rotatably connected to the movable headrest 27 and a pull rope 39 for pulling the upper slider 34. The upper slider 34 is slidably engaged with the upper slide frame 33. A dovetail groove structure is formed inside the upper slide frame 33. The upper slider 34 slides inside the dovetail groove structure, and a pull shaft 3401 is fixedly connected to one side of the upper slider 34. The pull shaft 3401 passes through the side wall of the upper slider 34 and is fixedly connected to the pull rope 39. A tension spring 3402 is slidably sleeved on the pull shaft 3401 located in the dovetail groove structure. The upper slider 34 is pulled by the pull rope 39 to slide within the upper slide frame 33. When a tension force is applied to the pull rope 39, the pull rope 39 is released, and under the action of the tension spring 3402, the upper slider 34 moves towards the movable headrest 27.

[0035] Thus, by controlling the movable headrest 27 to slide along the guide groove 102 on the bed 1, the traction force on the patient's neck increases when the movable headrest 27 moves away from the bed 1 along the guide groove 102; and the traction force on the patient's neck decreases when the movable headrest 27 moves closer to the bed 1 along the guide groove 102.

[0036] The upper slide 33 is fixedly connected to the movable cylinder 31 via the upper connecting frame 3301. The movable cylinder 31 is slidably engaged in the positioning cylinder 32. A cylinder cover 3203 is detachably installed on the top of the positioning cylinder 32. The movable cylinder 31 passes through the cylinder cover 3203, and the movable cylinder 31 and the positioning cylinder 32 are either engaged by gears or not in contact.

[0037] A fixed shaft 36 passes through both the movable cylinder 31 and the positioning cylinder 32. The fixed shaft 36 is fixedly installed on the fixed cylinder 35. The fixed cylinder 35 is fixedly connected to the bed 1 through the fixed frame 3502. A lower turntable 382 is rotatably installed at the bottom of the fixed cylinder 35. An upper turntable 381 is rotatably installed on the movable cylinder 31. The pull rope 39 passes through the upper turntable 381, the fixed shaft 36, and the lower turntable 382 in sequence, and is fixedly connected to the tensioner 311. The tensioner 311 is fixedly connected to the lower slide block 312. The lower slide block 312 is slidably engaged on the lower slide frame 310, and the lower slide block 312 is rotatably connected to the end of the screw 313. The screw 313 is rotatably installed on the lower slide frame 310 through a threaded structure. The lower slide frame 310 is fixedly connected to the bottom of the fixed cylinder 35 through the lower connecting frame 3503.

[0038] Furthermore, the fixed shaft 36 extends vertically through the fixed cylinder 35, and a rotating shaft part 3603 is provided at the top of the fixed shaft 36. The rotating shaft part 3603 is rotatably connected to the movable cylinder 31, and the pull rope 39 enters the rotating shaft part 3603 through the opening at the top of the movable cylinder 31. An external toothed ring 3101 is fixedly sleeved at the bottom of the movable cylinder 31. An internal toothed ring 3201 that meshes with the external toothed ring 3101 is installed at the bottom of the inner side of the positioning cylinder 32. An inner groove 3202 is recessed on the side wall of the positioning cylinder 32 above the internal toothed ring 3201. The inner groove 3202 does not contact the external toothed ring 3101.

[0039] The positioning cylinder 32 is movably sleeved on the fixed shaft 36, and a spring 3601 is movably sleeved on the fixed shaft 36. One end of the spring 3601 is fixedly connected to the positioning cylinder 32, and the other end is fixedly connected to the top of the fixed cylinder 35.

[0040] The fixed shaft 36 has vertical ribs 3602 distributed on its surface. The positioning cylinder 32 is movably sleeved on the fixed shaft 36, and the positioning cylinder 32 has grooves that mate with the ribs 3602. The positioning cylinder 32 can slide up and down along the axis of the fixed shaft 36, and the radial freedom of the positioning cylinder 32 is restricted by the mating structure of the ribs 3602 and the grooves, preventing the positioning cylinder 32 from rotating.

[0041] Under the action of spring 3601, the positioning cylinder 32 moves upward, causing the internal toothed ring 3201 at the bottom of the positioning cylinder 32 to mesh with the external toothed ring 3101 on the movable cylinder 31. Since the radial degree of freedom of the positioning cylinder 32 is restricted, the radial degree of freedom of the movable cylinder 31 is also restricted, preventing the positioning cylinder 32 from rotating.

[0042] When the positioning cylinder 32 is pulled down, the spring 3601 is compressed, causing the inner toothed ring 3201 on the positioning cylinder 32 to disengage from the outer toothed ring 3101 on the movable cylinder 31. At this time, the inner groove 3202 on the positioning cylinder 32 is aligned with the outer toothed ring 3101 on the movable cylinder 31, and the inner groove 3202 and the outer toothed ring 3101 do not contact each other, so the movable cylinder 31 can rotate freely on the rotating shaft 3603. When the movable cylinder 31 rotates, the upper slide 33 fixedly connected to it also rotates, thereby driving the movable headrest 27 to swing along its central axis.

[0043] In one embodiment of the present invention, such as Figure 1-4 As shown, a snap-fit ​​structure 37 is fixedly installed at the bottom of the positioning cylinder 32, and a limiting groove 3501 that mates with the snap-fit ​​structure 37 is opened at the top of the fixed cylinder 35;

[0044] The locking structure 37 includes a connecting piece 371 fixedly connected to the bottom of the positioning cylinder 32. A middle plate 372 is fixedly connected to the bottom of the connecting piece 371. Locking blocks 373 are rotatably connected to both sides of the middle plate 372. The inner side of the locking blocks 373 is connected to the middle plate 372 through a metal spring 374. An L-shaped lever 375 is fixedly connected to the top of the locking blocks 373. The end of the lever 375 extends to the end of the connecting piece 371, and a hand-held part 371a is provided at the end of the connecting piece 371. The locking blocks 373 have a triangular structure and are supported by the metal spring 374. The top of the locking blocks 373 can be locked into the inner side of the limiting groove 3501. By squeezing the levers 375 on both sides, the two locking blocks 373 can be moved closer together. Since the width of their tops is smaller than the width of the limiting groove 3501, the locking structure 37 can be removed from the limiting groove 3501.

[0045] When the positioning cylinder 32 is pulled down and its position needs to be fixed, simply pull down the locking structure 37 so that it is inserted into the limiting groove 3501. The locking block 373, which is supported by the metal spring 374, will automatically lock into the limiting groove 3501, thus ensuring that the positioning cylinder 32 will not slide upward. Conversely, if the two levers 375 are pinched, the locking block 373 will disengage from the limiting groove 3501, and the positioning cylinder 32 will slide upward under the action of the spring 3601.

[0046] The following is a detailed description of the steps for using the traction device of the present invention:

[0047] The traction device in this invention addresses the problems of difficulty in controlling traction force and inability to adjust traction direction in existing technologies. Specifically, it is achieved through the following steps:

[0048] The front support ring 22 is placed under the patient's chin, and the rear support ring 23 is fixed under the patient's head. Both the front support ring 22 and the rear support ring 23, which are in contact with the patient's chin and head, are equipped with support pads 24. The bottom of the support ring 21 is equipped with a head pad 25. The support pads 24 and the head pad 25 support the softer parts of the patient's head and play a protective role. The patient's neck is pulled by the occipital-chin strap traction method.

[0049] When the traction force on the patient's neck needs to be adjusted, the screw 313 is rotated, causing the lower slider 312 to slide within the lower frame 310. This, in turn, causes the upper slider 34 to move synchronously via the pull rope 39. The upper slider 34 then causes the movable headrest 27, which is rotatably connected to it, to slide on the bed 1. When the movable headrest 27 moves away from the bed 1 along the guide groove 102, the traction force on the patient's neck increases; when the movable headrest 27 moves closer to the bed 1 along the guide groove 102, the traction force on the patient's neck decreases.

[0050] When it is necessary to adjust the direction of the traction force on the patient's neck, the pull rope 39 is loosened appropriately. When the positioning cylinder 32 is pulled down, the locking structure 37 is inserted into the limiting groove 3501, so that the inner toothed ring 3201 on the positioning cylinder 32 is disengaged from the outer toothed ring 3101 on the movable cylinder 31. At this time, the inner groove 3202 on the positioning cylinder 32 is exactly aligned with the outer toothed ring 3101 on the movable cylinder 31. The inner groove 3202 and the outer toothed ring 3101 do not contact each other, so the movable cylinder 31 can rotate freely on the rotating shaft 3603 to adjust the position of the upper slider 34. The loosened pull rope 39 also provides space for the upper slider 34 to swing. During the swing of the upper slider 34, the movable headrest 27 is also driven to swing, thereby changing the direction of the traction force and meeting different needs in the surgical operation.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated multi-level control cervical traction device, comprising a bed, characterized in that: The head of the bed is slidably mounted with a rotatable head fixing mechanism, which includes a movable headrest slidably mounted on the bed, a support ring fixedly connected to the movable headrest, and a front support ring and a rear support ring rotatably connected to both ends of the support ring. The bed is equipped with a traction mechanism, which includes an upper slider that is rotatably connected to the movable headrest and a pull rope that pulls the upper slider. The upper slider is slidably engaged with the upper slide frame. The upper slide is fixedly connected to the movable cylinder, which is slidably engaged in the positioning cylinder. The movable cylinder and the positioning cylinder may or may not be in contact with each other via gear meshing. When it is necessary to adjust the direction of the traction force on the patient's neck, the positioning cylinder is pulled down, and the engaging structure is inserted into the limiting groove, so that the inner toothed ring on the positioning cylinder is disengaged from the outer toothed ring on the movable cylinder. At this time, the inner groove on the positioning cylinder is exactly aligned with the outer toothed ring on the movable cylinder. The inner groove and the outer toothed ring do not contact each other, so the movable cylinder can rotate freely on the rotating shaft to adjust the position of the upper slide. During the swing of the upper slide, the movable headrest is also driven to swing, thereby changing the direction of the traction force. A fixed shaft passes through both the movable cylinder and the positioning cylinder. The fixed shaft is fixedly installed on the fixed cylinder. The fixed cylinder is fixedly connected to the bed. A lower turntable is rotatably installed at the bottom of the fixed cylinder. An upper turntable is rotatably installed on the movable cylinder. The pull rope passes through the upper turntable, the fixed shaft, and the lower turntable in sequence, and is fixedly connected to the tensioner. The tensioner is fixedly connected to the lower slide block. The lower slide block is slidably engaged on the lower slide frame, and the lower slide block is rotatably connected to the end of the screw. The screw is rotatably installed on the lower slide frame through a threaded structure. The lower slide frame is fixedly connected to the bottom of the fixed cylinder. The fixed shaft extends vertically through the fixed cylinder. A rotating shaft is provided at the top of the fixed shaft. The rotating shaft is rotatably connected to the movable cylinder. An external toothed ring is fixedly sleeved at the bottom of the movable cylinder. An internal toothed ring that meshes with the external toothed ring is installed at the bottom of the positioning cylinder. An inner groove is recessed on the side wall of the positioning cylinder above the internal toothed ring. The inner groove does not contact the external toothed ring. The positioning cylinder is movably sleeved on the fixed shaft, and a spring is movably sleeved on the fixed shaft. One end of the spring is fixedly connected to the positioning cylinder, and the other end is fixedly connected to the top of the fixed cylinder. Vertical ribs are distributed on the surface of the fixed shaft. The positioning cylinder is movably sleeved on the fixed shaft, and a groove that mates with the ribs is provided on the positioning cylinder. A snap-fit ​​structure is fixedly installed at the bottom of the positioning cylinder, and a limiting groove that mates with the snap-fit ​​structure is provided at the top of the fixed cylinder. The locking structure includes a connecting piece fixed to the bottom of the positioning cylinder, an intermediate plate fixed to the bottom of the connecting piece, locking blocks rotatably connected to both sides of the intermediate plate, the inner side of the locking block being connected to the intermediate plate through a metal spring, an L-shaped lever fixedly connected to the top of the locking block, the end of the lever extending to the end of the connecting piece, and a hand-held part provided at the end of the connecting piece.

2. The integrated multi-level control cervical traction device according to claim 1, characterized in that: Both the front and rear support rings adopt an arc-shaped, retractable soft shell structure. Each front and rear support ring consists of two arc-shaped fixed sections and one movable section. The fixed sections are slidably sleeved on both sides of the movable section. The fixed sections and the movable section are connected by a pin structure. The end of the fixed section is rotatably mounted on the support ring.

3. The integrated multi-level control cervical traction device according to claim 1, characterized in that: Locking bolts are provided at the rotatable connection points between the front and rear support rings and the support ring, and the front and rear support rings rotate around the locking bolts as the central axis.

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