A ring arthroplasty

Abstract

The application discloses a kind of annular cricoarytenoid joint reset forceps, belong to annular cricoarytenoid joint dislocation treatment field, comprising: forceps arm, forceps arm is hollow rod-like;Rotary first column block being equipped at the end of forceps arm, first column block is coaxial with forceps arm;Two clamps articulated on the outside end of first column block;Rotary second column block being equipped at the first end of forceps arm, second column block is coaxial with forceps arm;Two pressing rods elastically being equipped at the outside wall of second column block;And linkage assembly being equipped in the inside of forceps arm: two pressing rods are in normal point position when rotating second column block, the angle between two clamps can be adjusted by linkage assembly;Two pressing rods are in locking point position when rotating second column block, first column block can be driven to rotate by linkage assembly;By poking or pulling forceps arm, it can be realized to the patient annular cricoarytenoid cartilage to pull, squeeze etc. Manipulation operation, and by operating the rotation of two clamps, it can drive the rotation of patient annular cricoarytenoid cartilage.

Description

Technical Field

[0001] This invention belongs to the field of cricoarytenoid joint dislocation treatment, and particularly relates to a cricoarytenoid joint reduction clamp. Background Technology

[0002] The cricoarytenoid joint reduction clamp is an instrument specifically designed for cricoarytenoid joint reduction surgery. Crecoarytenoid joint dislocation is a complication of general anesthesia with intubation, which can cause hoarseness, choking when drinking, and pain when speaking, severely impacting the patient's quality of life. Early diagnosis and timely, effective treatment are crucial for correcting the dislocation and restoring vocal cord movement and the patient's vocal quality.

[0003] However, there are currently no specialized reduction instruments. Doctors generally use laryngeal foreign body forceps, plucking rods, or even fiberoptic laryngoscopes and direct laryngoscopes to plucking the arytenoid cartilage in cricoarytenoid joint dislocations. They combine plucking, squeezing, and twisting techniques. Based on the results of preoperative thin-slice CT and three-dimensional reconstruction of the larynx, the angle of the base of the healthy side and the difference between the angles of the base of the healthy and affected sides are obtained. The height of the vocal cord process on the healthy side, the shape of the epiglottis, and the tension of the vocal cords are used as references to adjust the direction and angle of the arytenoid cartilage to achieve the purpose of joint dislocation reduction.

[0004] However, in practice, it has been found that using laryngeal foreign body forceps, prying rods, or even fiberoptic laryngoscopes and direct laryngoscopes to achieve the prying, squeezing, and rotation techniques is not easy. This is because patients do not cooperate well, the instruments are not easy to stabilize the cricoarytenoid joint, and they are prone to slipping. In addition, when rotating the forceps, it is difficult for doctors to ensure that the forceps themselves will not move back and forth during the rotation process. As a result, when the forceps are used to rotate and reposition the arytenoid cartilage at the cricoarytenoid joint, the forceps themselves are very likely to move back and forth, causing the cricoarytenoid joint to dislocate in other directions, or even causing the forceps to slip off the patient's cricoarytenoid joint. Therefore, it is necessary to design an instrument that can wrap around and fix the cricoarytenoid joint head at one end and achieve the prying, squeezing, and rotation functions. Summary of the Invention

[0005] This invention provides a arytenoid joint reduction clamp to solve the problems in the prior art.

[0006] The present invention employs the following technical solution: a ring-arytenoid joint reduction forceps, comprising: a forceps arm, the forceps arm being hollow rod-shaped; a first column block rotatably disposed at the end of the forceps arm, the first column block being coaxial with the forceps arm; two clamps hinged to the outer end of the first column block, the two clamps being mirror-imagely arranged around the axis of the first column block; a second column block rotatably disposed at the head end of the forceps arm, the second column block being coaxial with the forceps arm, the outer side of the second column block being provided with an end cap; two pressing rods elastically disposed on the outer peripheral wall of the second column block, the two pressing rods being mirror-imagely arranged around the axis of the second column block, both pressing rods pointing perpendicularly to the axis of the second column block, the two pressing rods being in the initial state being called the normal position, the two pressing rods being pressed towards each other being called the locking position; and a linkage component disposed inside the forceps arm: when the two pressing rods are in the normal position, rotating the second column block allows the angle between the two clamps to be adjusted through the linkage component; when the two pressing rods are in the locking position, rotating the second column block allows the first column block to be rotated through the linkage component.

[0007] By rotating the second column of the handpiece, the doctor can adjust the angle of the two clamps or rotate them. The doctor clamps the patient's cricoarytenoid cartilage with the two clamps. By plucking or pulling the clamp arms, the doctor can perform manipulations such as pulling or squeezing the cricoarytenoid cartilage. By rotating the two clamps, the doctor can rotate the patient's cricoarytenoid cartilage, thus performing manipulations such as twisting the patient's cricoarytenoid cartilage.

[0008] Furthermore, the linkage assembly includes: an inner rod coaxially disposed inside the clamp arm, a through hole coaxially provided on the first column, the end portion of the inner rod being linearly slidably disposed within the through hole, a threaded hole coaxially provided on the second column, the beginning end of the inner rod being a threaded rod, the threaded rod being threadedly connected to the threaded hole; two connecting rods hinged to the end of the inner rod, the other ends of the two connecting rods being respectively hinged to two clamps; and a locking assembly disposed at the beginning end of the clamp arm, the locking assembly being used to restrict the rotation of the inner rod.

[0009] Furthermore, the inner end of the second column is provided with a first annular sleeve coaxial with it, the inner end of the first annular sleeve is provided with a first annular plate coaxial with it, the inner diameter of the first annular plate is smaller than the inner diameter of the first annular sleeve, and the outer wall of the head end of the clamp arm is provided with a first annular groove coaxial with it, and the first annular plate is rotatably disposed in the first annular groove.

[0010] The second column block is rotated and positioned within the first annular groove by the first annular plate, thereby achieving the effect of rotational engagement between the second column block and the clamp arm.

[0011] Furthermore, the outer wall of the threaded rod is provided with four sets of strip grooves, each set of strip grooves extending along the axial direction of the inner rod; the outer wall of the first annular sleeve is provided with two insertion holes, and two pressing rods are respectively inserted into the two insertion holes. The end of each pressing rod is coaxially connected to an insertion rod, and the diameter of the insertion rod is adapted to the width of the strip groove.

[0012] Pressing the two push rods allows the two insert rods to be inserted into the corresponding two slots, thus achieving the locking position of the two push rods.

[0013] Furthermore, an arc-shaped plate is fixedly connected to the end of each pressing rod. The arc-shaped plate is located between the corresponding pressing rod and the insert rod. The arc-shaped plate is located inside the first annular sleeve. The outer diameter of the arc-shaped plate is the same as the inner diameter of the first annular sleeve. A magnetic block is fixedly installed at both ends of the arc-shaped plate. The magnetic blocks on the two arc-shaped plates correspond to each other. Each magnetic block has an installation groove on its inner side. A first spring is provided between the two opposing magnetic blocks. The two ends of the first spring are respectively located in the installation grooves of the two corresponding magnetic blocks.

[0014] Furthermore, the locking assembly includes: an arc-shaped sliding plate, an elongated slot extending along its length is provided on the outer wall of the first end of the clamp arm, the elongated slot communicating with the inner cavity of the clamp arm, the sliding plate being slidably disposed within the elongated slot along the length of the clamp arm; and an abutment ball elastically disposed on the side of the sliding plate near the inner cavity of the clamp arm, the elastic direction of the abutment ball being perpendicularly pointing to the axis of the inner rod, a guide groove extending along its length being provided on the outer wall of the inner rod, the side of the guide groove near the end of the inner rod being transitionally connected to the outer wall of the inner rod by providing a chamfered surface.

[0015] Furthermore, a U-shaped plate is installed on the side of the sliding plate near the inner cavity of the clamp arm. A round hole is opened on the U-shaped plate. A round rod is connected to the contact ball. The round rod is slidably disposed in the round hole. A second spring is also sleeved on the round rod. The two ends of the second spring abut against the contact ball and the U-shaped plate, respectively.

[0016] Furthermore, two limiting blocks are provided on the inner wall of the through hole, and two limiting grooves extending along the length direction are provided on the outer wall of the end of the inner rod, with the two limiting blocks slidably disposed in the two limiting grooves respectively.

[0017] The limiting block and the limiting groove can ensure the axial sliding fit between the inner rod and the first column block, and prevent relative rotation between the first column block and the inner rod.

[0018] Furthermore, a second annular sleeve is coaxially provided on the inner end of the first column block, and a second annular plate is coaxially provided on the inner end of the second annular sleeve. The inner diameter of the second annular plate is smaller than the inner diameter of the second annular sleeve. A second annular groove is coaxially provided on the outer wall of the end of the clamp arm, and the second annular plate is rotatably connected to the second annular groove.

[0019] The above-described at least one technical solution adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0020] This invention allows the doctor to adjust two pressing levers to position them at two different points. By simply rotating the second column of the lever's handle, the doctor can adjust the angle of the two clamps or rotate them. The doctor then clamps the patient's cricoarytenoid cartilage and, by plucking or pulling the clamp arms, can perform manipulations such as pulling or squeezing the cartilage. Furthermore, rotating the clamps rotates the cricoarytenoid cartilage, thus enabling manipulations such as cricoarytenoid cartilage twisting. By employing the three techniques described above—pulling, squeezing, and twisting—the cricoarytenoid cartilage can be repositioned. Furthermore, when twisting the cricoarytenoid cartilage, the doctor does not need to rotate the entire repositioning forceps. The doctor only needs to rotate the second column of the handle to twist the cricoarytenoid cartilage. During this process, the forceps arm does not need to move or rotate, thus ensuring the proper clamping position of the cricoarytenoid cartilage and preventing the forceps arm from detaching from the cartilage due to unavoidable back-and-forth movement during twisting. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0026] Figure 5 This is a three-dimensional structural diagram of the first column and the two clamps of the present invention;

[0027] Figure 6 This is a three-dimensional structural cross-sectional view of the first column block and inner rod of the present invention;

[0028] Figure 7 This is a three-dimensional cross-sectional view of the longitudinal section of the second column block of the present invention;

[0029] Figure 8 This is a three-dimensional structural diagram of the middle position of the two pressing rods of the present invention;

[0030] Figure 9 This is a three-dimensional structural diagram of the locking component of the present invention;

[0031] Figure 10 This is a three-dimensional structural cross-sectional view of the locking component of the present invention;

[0032] Figure Labels

[0033] 1-Pliers arm; 11-First annular groove; 12-Elongated slot; 13-Second annular groove; 2-First pillar block; 21-Through hole; 22-Limiting block; 23-Second annular sleeve; 24-Second annular plate; 3-Pliers clamp; 31-Rubber protective pad; 4-Second pillar block; 41-Threaded hole; 42-First annular sleeve; 421-Insertion hole; 43-First annular plate; 5-End cap; 6-Pressing rod; 61-Insertion rod; 62- Arc-shaped plate; 63-Magnetic block; 631-Mounting groove; 64-First spring; 7-Linkage assembly; 71-Inner rod; 711-Threaded rod; 712-Strip groove; 713-Guide groove; 714-Chamfered surface; 715-Limiting groove; 72-Connecting rod; 73-Locking assembly; 731-Sliding plate; 732-Abutting ball; 733-U-shaped plate; 7331-Round hole; 734-Round rod; 735-Second spring. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0035] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Reference Figures 1 to 10As shown, this embodiment of the invention provides a arytenoid joint reduction forceps, comprising: a forceps arm 1, the forceps arm 1 being a hollow rod shape; a first column block 2 rotatably disposed at the end of the forceps arm 1, the first column block 2 being coaxial with the forceps arm 1; a second annular sleeve 23 being coaxially disposed on the inner side of the first column block 2; a second annular plate 24 being coaxially disposed on the inner side of the second annular sleeve 23; the inner diameter of the second annular plate 24 being smaller than the inner diameter of the second annular sleeve 23; a second annular groove 13 coaxially disposed on the outer wall of the end of the forceps arm 1; and the second annular plate 24 being rotatably connected within the second annular groove 13, thereby achieving the effect of rotational engagement between the first column block 2 and the forceps arm 1;

[0037] A second column block 4 is rotatably disposed at the head end of the clamp arm 1. The second column block 4 is coaxial with the clamp arm 1. An end cap 5 is provided on the outer side of the second column block 4. A first annular sleeve 42 is provided on the inner side of the second column block 4, which is coaxial with it. A first annular plate 43 is provided on the inner side of the first annular sleeve 42, which has a smaller inner diameter than the inner diameter of the first annular sleeve 42. A first annular groove 11 is provided on the outer wall of the head end of the clamp arm 1, which is coaxial with it. The first annular plate 43 is rotatably disposed in the first annular groove 11, thereby achieving the effect of rotational engagement between the second column block 4 and the clamp arm 1.

[0038] Two clamps 3 are hinged to the outer end of the first column 2, and the two clamps 3 are mirror images of the axis of the first column 2; two pressing rods 6 are elastically disposed on the outer peripheral wall of the second column 4, and the two pressing rods 6 are mirror images of the axis of the second column 4. Both pressing rods 6 are perpendicular to the axis of the second column 4. The two pressing rods 6 are in the initial state, which is called the normal position. When the two pressing rods 6 are pressing against each other, it is called the locking position; and a linkage component 7 is disposed inside the clamp arm 1: when the two pressing rods 6 are in the normal position, rotating the second column 4 can adjust the angle between the two clamps 3 through the linkage component 7; when the two pressing rods 6 are in the locking position, rotating the second column 4 can drive the first column 2 to rotate through the linkage component 7. Through the linkage component 7, rotating the second column 4 can cause the two clamps 3 to perform different actions when the pressing rods 6 are in the two positions.

[0039] The cricoarytenoid joint is formed by the base of the arytenoid cartilage and the articular surface at the upper edge of the cricoid cartilage plate. The arytenoid cartilage can rotate along the vertical axis at this joint, causing the vocal cord process to rotate to the medial or lateral side. In addition, it can also slide slightly to the side. When the arytenoid cartilage is dislocated, the doctor uses a reduction forceps to clamp the arytenoid cartilage and combines the doctor's three techniques of plucking, squeezing and twisting. Based on the results of the preoperative thin-slice CT and three-dimensional reconstruction of the larynx, the angle of the base of the healthy side, the difference between the angles of the base of the healthy side and the affected side, and with the height of the vocal cord process of the healthy side, the shape of the epiglottis, and the tension of the vocal cords as a reference, the direction and angle of the cricoarytenoid cartilage are adjusted to achieve the purpose of joint dislocation reduction.

[0040] When using the aforementioned arytenoid joint reduction clamp, it has two working states, as follows:

[0041] When the two pressure levers 6 are in the normal position: the two pressure levers 6 are in an elastic outward expansion state. At this time, the doctor can insert the two clamps 3 into the cricoarytenoid joint of the patient's throat by holding the first end of the clamp arm 1. At this time, by rotating the second column 4 at the hand end, the angle of the two clamps 3 can be adjusted through the linkage component 7, so that the two clamps 3 are clamped on the patient's arytenoid cartilage. Subsequently, the doctor uses appropriate three techniques of pulling, squeezing and twisting to reposition the cricoarytenoid cartilage according to the patient's cricoarytenoid cartilage dislocation. The pulling and squeezing techniques can be achieved by the doctor pulling or pushing the clamp arm 1.

[0042] When the two pressing rods 6 are in the locked position: the doctor needs to press the two pressing rods 6 to bring them closer together. At this time, the two pressing rods 6 are in the locked position. Therefore, when the doctor needs to perform a twisting maneuver on the patient's cricoarytenoid cartilage, the doctor needs to adjust the two pressing rods 6 to the locked position. In this state, when the doctor rotates the second column 4 again, the angle of the two clamps 3 will not change through the linkage component 7. Instead, it will drive the first column 2 and the two clamps 3 to rotate together. Thus, the patient's cricoarytenoid cartilage can be rotated under the rotation of the two clamps 3.

[0043] Combining the two positions of the pressure levers 6 described above, the doctor adjusts the two pressure levers 6 to two different positions. Thus, by simply rotating the second column 4 of the handle, the doctor can adjust the angle of the two clamps 3 or rotate them. The doctor clamps the cricoarytenoid cartilage with the two clamps 3, and by plucking or pulling the clamp arms 1, manipulations such as pulling and squeezing can be performed on the cricoarytenoid cartilage. Furthermore, rotating the two clamps 3 rotates the cricoarytenoid cartilage, thus achieving a twisting manipulation of the cricoarytenoid cartilage. The procedure involves using the three techniques described above—pulling, squeezing, and twisting—to reposition the cricoarytenoid cartilage. Furthermore, when twisting the cricoarytenoid cartilage, the doctor does not need to rotate the entire repositioning forceps; simply rotating the second column 4 of the handpiece is sufficient to twist the cartilage. During this process, the forceps arm 1 does not need to move or rotate, thus ensuring the correct clamping position of the cricoarytenoid cartilage and preventing the forceps arm 1 from inevitably detaching from the cartilage due to back-and-forth movement during twisting.

[0044] Specifically, the linkage component 7 includes: an inner rod 71 coaxially disposed inside the clamp arm 1; a through hole 21 coaxially disposed on the first column block 2; the end of the inner rod 71 is linearly slidably disposed in the through hole 21; two limiting blocks 22 are provided on the inner wall of the through hole 21; and two limiting grooves 715 extending along the length direction are provided on the outer wall of the end of the inner rod 71; the two limiting blocks 22 are respectively slidably disposed in the two limiting grooves 715, thereby realizing that the inner rod 71 is linearly slidably disposed in the through hole 21, avoiding relative rotation between the inner rod 71 and the first column block 2, and ensuring that the inner rod 71 and the first column block 2 can rotate synchronously.

[0045] The second column block 4 is coaxially provided with a threaded hole 41, the first end of the inner rod 71 is a threaded rod 711, and the threaded rod 711 is threadedly connected to the threaded hole 41; two connecting rods 72 are hinged to the end of the inner rod 71, and the other ends of the two connecting rods 72 are respectively hinged to two clamps 3; and a locking assembly 73 is provided at the first end of the clamp arm 1, the locking assembly 73 is used to limit the rotation of the inner rod 71;

[0046] The outer wall of the threaded rod 711 is provided with four sets of strip grooves 712, each set of strip grooves 712 extending along the axial direction of the inner rod 71; the outer wall of the first annular sleeve 42 is provided with two insertion holes 421, and two pressing rods 6 are respectively inserted into the two insertion holes 421. The end of each pressing rod 6 is coaxially connected to an insertion rod 61, and the diameter of the insertion rod 61 is adapted to the width of the strip groove 712.

[0047] In this embodiment, the end cap 5 is made of a transparent material. When the two pressing rods 6 are in the normal position, the two pressing rods 6 have no contact with the inner rod 71. At this time, the locking component 73 is also in a state of limiting the rotation of the inner rod 71, thereby restricting the rotation of the inner rod 71 within the clamp arm 1. The inner rod 71 and the first column block 2 cannot rotate relative to each other. Therefore, when the inner rod 71 cannot rotate, the first column block 2 and the two clamps 3 will not rotate with the clamp arm 1. Then, the doctor rotates the two pressing rods 6, thereby causing the second column block 4 to rotate at the head end of the clamp arm 1. Under the threaded engagement of the threaded hole 41 of block 4 and the threaded rod 711 of inner rod 71, the rotation of the second column block 4 can drive the inner rod 71 to move along the axis of the clamp arm 1. Then, under the action of the two connecting rods 72, the axial movement of the inner rod 71 can adjust the angle of the two clamps 3, thereby achieving the clamping of the clamps 3 on the cricoarytenoid cartilage of the patient. It should be noted that the inner ends of the two clamps 3 should also be provided with soft anti-slip protective pads. The anti-slip protective pads can clamp the cricoarytenoid cartilage of the patient while preventing the clamps 3 from slipping on the cricoarytenoid cartilage. In addition, they can also prevent the clamps 3 from abrading the cricoarytenoid cartilage.

[0048] When the two pressing rods 6 are in the locking position, the doctor needs to press the two pressing rods 6 so that the two insert rods 61 are respectively inserted into the slots 712 on the threaded rod 711. Since the end cap 5 is made of transparent material, the doctor can see the position of the slots 712 on the threaded rod 711 through the end cap 5 to ensure that the two pressing rods 6 can be accurately inserted into the slots 712. In this case, the two pressing rods 6 are in the locking position. Then, the rotation restriction on the inner rod 71 is released by the locking component 73. When the staff rotates the two pressing rods 6 again, the second column 4 and the inner rod 71 can rotate together. Since the inner rod 71 and the first column 2 can only move axially under the action of the limiting block 22 and the limiting groove 715, the rotation of the inner rod 71 will drive the first column 2 to rotate, so that the two clamps 3 on the first column 2 will also rotate with it, thereby achieving the effect of the clamps 3 torsion of the cricoarytenoid cartilage of the patient.

[0049] Specifically, each pressing rod 6 is also fixedly connected to an arc-shaped plate 62 at its end. The arc-shaped plate 62 is located between the corresponding pressing rod 6 and the insert rod 61. The arc-shaped plate 62 is located inside the first annular sleeve 42. The outer diameter of the arc-shaped plate 62 is the same as the inner diameter of the first annular sleeve 42. A magnetic block 63 is fixedly installed at both ends of the arc-shaped plate 62. The magnetic blocks 63 on the two arc-shaped plates 62 correspond to each other. Each magnetic block 63 has an installation groove 631 on its inner side. A first spring 64 is provided between the two opposing magnetic blocks 63. The two ends of the first spring 64 are respectively located in the installation grooves 631 of the two corresponding magnetic blocks 63.

[0050] Both pressing rods 6 have pull rings on their outer ends, allowing the doctor to easily pull the rods to disengage them from the magnetic blocks 63. A plastic pad (not shown in the figure) should also be provided on the inner wall of the mounting groove 631 to isolate the first spring 64, preventing direct contact between the first spring 64 and the magnetic blocks 63, which could magnetize the first spring 64 and affect its elasticity. When the doctor pulls the two pull rings so that both arc-shaped plates 62 abut against the inner wall of the first annular sleeve 42, the attraction force between the two opposing magnetic blocks 63 is less than the elastic force of the first spring 64 at the corresponding position. This allows the two pressing rods 6 to remain in an expanded state without external force. At this time, both insert rods 61 are threaded onto the inner rod 71. When rods 711 are not in contact, this is the normal position of the two pressing rods 6. In this case, the doctor can adjust the angle of the two clamps 3 by rotating the second column block 4 to ensure that the clamps 3 clamp the patient's cricoarytenoid cartilage. When the doctor presses the two pulls, causing the magnetic blocks 63 on the two arc plates 62 to come closer to each other and attract each other, the attraction force between the two magnetic blocks 63 will be greater than the elastic force of the first spring 64. The two insert rods 61 will then be inserted into two of the slots 712 of the threaded rod 711 respectively. In this case, the two pressing rods 6 are in the locking position, the locking component 73 releases the restriction on the inner rod 71, and the doctor can rotate the second column block 4 to drive the two clamps 3 to rotate, so as to achieve the effect of twisting the patient's cricoarytenoid cartilage.

[0051] Specifically, the locking assembly 73 includes: an arc-shaped sliding plate 731, an elongated slot 12 extending along its length direction is provided on the outer wall of the first end of the clamp arm 1, the elongated slot 12 communicates with the inner cavity of the clamp arm 1, and the sliding plate 731 is slidably disposed in the elongated slot 12 along the length direction of the clamp arm 1; and an abutment ball 732 elastically disposed on the side of the sliding plate 731 near the inner cavity of the clamp arm 1, the elastic direction of the abutment ball 732 is perpendicularly pointing to the axis of the inner rod 71, and a guide groove 713 extending along its length direction is provided on the outer wall of the inner rod 71, and the side of the guide groove 713 near the end of the inner rod 71 is transitionally connected to the outer wall of the inner rod 71 by providing a chamfered surface 714;

[0052] A U-shaped plate 733 is installed on the side of the sliding plate 731 near the inner cavity of the clamp arm 1. A round hole 7331 is opened on the U-shaped plate 733. A round rod 734 is connected to the abutting ball 732. The round rod 734 is slidably disposed in the round hole 7331. A second spring 735 is also sleeved on the round rod 734. The two ends of the second spring 735 abut against the abutting ball 732 and the U-shaped plate 733 respectively.

[0053] When both pressing levers 6 are in the normal position, the abutment ball 732, under the action of the second spring 735, abuts against one end of the guide groove 713 and is close to the head end of the inner rod 71, while the sliding plate 731 is in the long slot 12 and is on one side close to the head end of the clamp arm 1. In this case, under the limiting action of the abutment ball 732, the inner rod 71 will not rotate within the clamp arm 1. In this case, the locking assembly 73 can restrict the rotation of the inner rod 71. When both pressing levers 6 are in the locked position, the doctor pushes the sliding plate 731 away from the head end of the clamp arm 1 by pushing it towards the long slot 12. The ball 732 slides to one side of the part, so that the contact ball 732 also moves within the guide groove 713. Finally, when the contact ball 732 moves to the chamfered surface 714, as the doctor continues to push the sliding plate 731, the round rod 734 will move along the round hole 7331 towards the sliding plate 731. Finally, the contact ball 732 can completely disengage from the long slot hole 12 and the chamfered surface 714. At this time, the locking component 73 releases the rotation restriction on the inner rod 71. Thus, when the doctor rotates the two pressing rods 6, it will drive the two clamps 3 to rotate, achieving the purpose of twisting the cricoarytenoid cartilage of the patient.

[0054] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A crico-arytenoid joint reduction forceps, characterized by, include: The clamp arm (1) is a hollow rod. Rotate the first column block (2) located at the end of the clamp arm (1), the first column block (2) being coaxial with the clamp arm (1); Two clamps (3) are hinged to the outer end of the first column (2), and the two clamps (3) are mirrored around the axis of the first column (2); Rotate the second column (4) located at the head end of the clamp arm (1). The second column (4) is coaxial with the clamp arm (1). An end cap (5) is provided on the outer side of the second column (4). Two pressing rods (6) are elastically set on the outer peripheral wall of the second column (4). The two pressing rods (6) are mirrored around the axis of the second column (4). Both pressing rods (6) point perpendicularly to the axis of the second column (4). When the two pressing rods (6) are in the initial state, they are called the normal position. When the two pressing rods (6) are pressed towards each other, they are called the locking position. And the linkage component (7): When the two pressing rods (6) are in the normal position, the second column block (4) can be rotated, and the angle between the two clamps (3) can be adjusted through the linkage component (7); When the two pressing rods (6) are in the locking position, the second column block (4) can be rotated, and the first column block (2) can be rotated through the linkage component (7); The linkage component (7) includes: An inner rod (71) is coaxially disposed inside the clamp arm (1). A through hole (21) is coaxially provided on the first column block (2). The end of the inner rod (71) is linearly slidably disposed in the through hole (21). A threaded hole (41) is coaxially provided on the second column block (4). The first end of the inner rod (71) is a threaded rod (711). The threaded rod (711) is threadedly connected to the threaded hole (41). Two connecting rods (72) are hinged to the end of the inner rod (71), and the other ends of the two connecting rods (72) are respectively hinged to two clamps (3); And a locking assembly (73) located at the head end of the clamp arm (1), the locking assembly (73) being used to restrict the rotation of the inner rod (71).

2. The crico-arytenoid joint reduction forceps according to claim 1, wherein The inner end of the second column (4) is provided with a first annular sleeve (42) coaxial with it. The inner end of the first annular sleeve (42) is provided with a first annular plate (43) coaxial with it. The inner diameter of the first annular plate (43) is smaller than the inner diameter of the first annular sleeve (42). The outer wall of the head end of the clamp arm (1) is provided with a first annular groove (11) coaxial with it. The first annular plate (43) is rotatably disposed in the first annular groove (11).

3. The arytenoid joint reduction clamp according to claim 2, characterized in that, The outer wall of the threaded rod (711) is provided with four sets of strip grooves (712), each set of strip grooves (712) extending along the axial direction of the inner rod (71); The outer wall of the first annular sleeve (42) is provided with two insertion holes (421) in a mirror image. Two pressing rods (6) are respectively inserted into the two insertion holes (421). The end of each pressing rod (6) is coaxially connected to a plug rod (61). The diameter of the plug rod (61) is adapted to the width of the strip groove (712).

4. The arytenoid joint reduction clamp according to claim 3, characterized in that, Each pressing rod (6) is also fixedly connected to an arc plate (62) at its end. The arc plate (62) is located between the corresponding pressing rod (6) and the insert rod (61). The arc plate (62) is located inside the first annular sleeve (42). The outer diameter of the arc plate (62) is the same as the inner diameter of the first annular sleeve (42). A magnetic block (63) is fixedly installed at both ends of the arc plate (62). The magnetic blocks (63) on the two arc plates (62) correspond to each other. Each magnetic block (63) has an installation groove (631) on its inner side. A first spring (64) is provided between the two opposing magnetic blocks (63). The two ends of the first spring (64) are respectively located in the installation groove (631) of the two corresponding magnetic blocks (63).

5. The arytenoid joint reduction clamp according to claim 1, characterized in that, The locking component (73) includes: The sliding plate (731) is arc-shaped. A long slot (12) extending along its length direction is provided on the outer wall of the first end of the clamp arm (1). The long slot (12) is connected to the inner cavity of the clamp arm (1). The sliding plate (731) is slidably disposed in the long slot (12) along the length direction of the clamp arm (1). And an abutment ball (732) elastically disposed on the side of the sliding plate (731) near the inner cavity of the clamp arm (1), wherein the elastic direction of the abutment ball (732) is perpendicularly pointing to the axis of the inner rod (71), and a guide groove (713) extending along its length is provided on the outer wall of the inner rod (71), wherein the side of the guide groove (713) near the end of the inner rod (71) is transitionally connected to the outer wall of the inner rod (71) through a chamfered surface (714).

6. A arytenoid joint reduction clamp according to claim 5, characterized in that, A U-shaped plate (733) is installed on the side of the sliding plate (731) near the inner cavity of the clamp arm (1). A round hole (7331) is opened on the U-shaped plate (733). A round rod (734) is connected to the abutting ball (732). The round rod (734) is slidably disposed in the round hole (7331). A second spring (735) is also sleeved on the round rod (734). The two ends of the second spring (735) abut against the abutting ball (732) and the U-shaped plate (733) respectively.

7. The arytenoid joint reduction clamp according to claim 1, characterized in that, Two limiting blocks (22) are provided on the inner wall of the through hole (21), and two limiting grooves (715) extending along the length direction are provided on the outer wall of the end of the inner rod (71). The two limiting blocks (22) are respectively slidably disposed in the two limiting grooves (715).

8. The arytenoid joint reduction clamp according to claim 1, characterized in that, The first column (2) is coaxially provided with a second annular sleeve (23) at its inner end, and a second annular plate (24) is coaxially provided at its inner end. The inner diameter of the second annular plate (24) is smaller than the inner diameter of the second annular sleeve (23). The outer wall of the end of the clamp arm (1) is provided with a second annular groove (13) coaxial with it. The second annular plate (24) is rotatably connected to the second annular groove (13).

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