Flexible laryngoscope for vocal cord fascia surgery

Abstract

Provided in the present invention is a flexible laryngoscope for vocal cord fascia surgery, which flexible laryngoscope effectively solves the problems whereby during use, existing laryngoscopes are fixed in terms of form and shape, and have a support force that is unable to be freely adjusted, thereby easily causing excessive support or abrasion to the epiglottis and larynx, and the existing laryngoscopes cannot be flexibly adjusted, thereby resulting in poor applicability and practicability. The technical solution for solving the problems is as follows: the flexible laryngoscope comprises a handle, wherein a fixed cylinder is provided on the left side of the handle, and a plurality of support units are provided on the right side of the fixed cylinder; the plurality of support units form a flexible mechanism; each support unit comprises front and rear small plates, and two arc-shaped plates are provided between the two small plates; when the arc-shaped plates on the plurality of support units open simultaneously, the larynx can be dilated; the lower ends of the small plates in adjacent support units are hinged together, a lead screw is provided on the outer side of each small plate, nuts are provided on the lead screws, connecting rods are hinged to the nuts, and the upper ends of the connecting rods are hinged together with adjacent small plates; and when a plurality of lead screws rotate at the same time, the upper ends of two adjacent small plates gradually approach each other, such that the flexible mechanism has a curved arc-shaped structure.

Description

Flexible laryngoscope for vocal cord fascia surgery TECHNICAL FIELD

[0001] The present application relates to the technical field of supporting laryngoscopes, in particular to a flexible laryngoscope for vocal cord fascia surgery. BACKGROUND

[0002] In vocal cord surgery, a laryngoscope needs to be used for assistance. Now there are two kinds of laryngoscopes in general, one of which is directly inserted with a cylinder. In use, because the front section is too large, it is easy to scratch the lateral wall of the larynx during insertion, causing secondary injury. The other is assembled and expanded after insertion to expose the glottis. Its essence is still a straight cylinder structure. The pressure on the larynx is still large during and after insertion. According to clinical experience, the passage between the laryngopharynx and the oral cavity of the larynx is generally arc-shaped. Obviously, the arc-shaped laryngoscope is more convenient to insert. But considering the need to use a binocular surgical microscope for observation, the patient needs to be in a supine position during surgery, and the oral cavity and vocal cords are in a straight line, so the straight cylinder laryngoscope is more convenient for surgery. But the existing laryngoscope cannot meet the above two conditions at the same time.

[0003] After searching, the patent document CN101342071A discloses a laryngeal dilator, which uses an arc-shaped movable expansion plate for support after insertion, but the bending arc of the main body itself is fixed and cannot be adjusted to adapt to different patients. Similarly, patent documents CN209733945U and CN109602384B also use movable support plates for support, which also have the problem of fixed bending arc in use. Doctors can only use professional scissors or knives with an arc shape during surgery, which increases the difficulty of surgery. Patent document CN219480040U claims to use a flexible laryngoscope, but after reading the disclosed document, it only uses a movable tongue depressor 8 to support the tongue and does not involve the feature of flexible support of the laryngopharynx. In short, whether it is a straight cylinder laryngoscope or an arc-shaped supporting laryngoscope, the shape cannot be changed in use, the shape cannot be changed, and the supporting force cannot be adjusted at will, which can easily cause excessive support or scratching of the epiglottis and larynx. It cannot be flexibly adjusted according to the specific conditions of different patients, and the applicability and practicality are poor.

[0004] The present application provides a flexible laryngoscope for vocal cord fascia surgery, which has solved the above problems. SUMMARY

[0005] In view of the above, in order to overcome the defects of the prior art, the present application provides a flexible laryngoscope for vocal cord fascia surgery, which effectively solves the problems of the existing laryngoscope that the shape is not variable, the shape is not variable, the supporting force cannot be adjusted at will, and the epiglottis and throat are easily over-supported or scratched, and cannot be flexibly adjusted according to the specific conditions of different patients, and the applicability and practicability are poor.

[0006] The technical solution solved is that a handle is provided, a fixed cylinder is fixed on the left side of the handle, a plurality of support units are uniformly distributed and connected end to end on the right side of the fixed cylinder, and the support units can support the laryngeal tube open.

[0007] The support unit comprises two front and rear symmetrical small plates, two arc-shaped plates are arranged between the two small plates, the two arc-shaped plates are oppositely opened, the end of the arc-shaped plate is hinged together with the corresponding small plate through a torsion spring, and the two arc-shaped plates can be opened or closed; when the arc-shaped plates on the plurality of support units are opened at the same time, the throat can be supported open.

[0008] The lower ends of the small plates on the same side in the adjacent support units are hinged together to form a chain structure, a rotatable lead screw is installed on the outer side of the small plate, a nut is screwed on the lead screw, a connecting rod is hinged on the nut, and the upper end of the connecting rod is inclined to the right and hinged together with the adjacent small plate; when the plurality of lead screws rotate at the same time, the nuts on the lead screws gradually approach the upper ends of the adjacent two small plates through the connecting rod, and the flexible mechanism presents a curved arc structure.

[0009] Preferably, an axial square hole is formed in the end of the lead screw, a square shaft is inserted into the square hole, the square shaft can axially slide in the square hole but not fall off, and the two square shafts between the adjacent lead screws are connected through a universal coupling; a rotatable gear ring is sleeved on the outer side of the fixed cylinder, a rotatable gear is installed on the fixed cylinder, and the leftmost square shaft is fixed with the gear; when the gear ring drives the leftmost square shaft to rotate through the gear, the plurality of lead screws rotate at the same time.

[0010] Preferably, a screw is arranged on the side wall of the fixed cylinder, the screw is arranged horizontally, the screw can move axially when rotating, a main rope is connected to the right end of the screw, and the main rope extends to the right; a wire wheel is installed at the hinged part of the end of the arc-shaped plate, a secondary rope is wound on the wire wheel, and the secondary rope is connected with the main rope; when the screw rotates and drives the main rope to move to the left, the main rope can drive the plurality of wire wheels to rotate at the same time through the plurality of secondary ropes, the plurality of arc-shaped plates are rotated to the right, and the plurality of support units are in a closed state.

[0011] Preferably, a tooth structure is arranged at the end of the arc-shaped plate, and the tooth structures at the ends of the two arc-shaped plates in the same support unit are in meshing state.

[0012] Preferably, the wire wheel is between the arc-shaped plate and the small plate, recessed areas are arranged outside the end of the arc-shaped plate, and the wire wheel is in the recessed areas; the main rope passes through the plurality of support units in sequence.

[0013] Preferably, the screw right end is sleeved with a cap, the screw drives the main rope to move through the cap; a bearing is arranged between the cap and the screw; and a bearing is arranged between the screw and the fixed cylinder.

[0014] Preferably, the arc-shaped plate is provided with a guide piece in the middle, the cross section of the guide piece is C-shaped, the left end of the guide piece is fixed to the inside of the arc-shaped plate and the right end extends to the right; when the plurality of support units are linearly distributed and the arc-shaped plates thereof are in an open state, the plurality of guide pieces can form a guide rail in a head-to-tail mode.

[0015] Preferably, the small plate is provided with an arc-shaped cover plate outside, the cover plate and the small plate form a hollow structure, and the connecting rod and the screw are between the small plate and the cover plate.

[0016] The laryngeal tube of the application can be inserted conveniently, adjusted in different degrees according to different patients, and has high practicability.

[0017] The laryngeal tube of the application can be inserted conveniently, adjusted in different degrees according to different patients, and has high practicability.

[0018] The laryngeal tube of the application can be inserted conveniently, adjusted in different degrees according to different patients, and has high practicability.

[0019] In the laryngeal tube, the displacement generated by the screwing of the screw drives all the arc-shaped plates to rotate through the main rope, and the angle between the corresponding arc-shaped plates increases, so that the laryngeal tube is radially expanded, and the vocal cords are fully exposed; the gear ring drives all the screws to rotate through the gear, and then controls the arc formed by the flexible mechanism composed of the plurality of support units, so that the vocal cords and the oral cavity are in a straight line, and the surgical microscope can be observed; the two functions cooperate with each other, can meet the requirements of various vocal cord surgeries or examinations as much as possible, have a wide range of adaptation, and have high practicability.

[0020] The present application has a clever structure, adopts flexible design, can be adjusted according to different patient specific conditions, realizes the bending state insertion, can be adjusted to be straight after insertion, does not produce scratch to the epiglottis and throat when inserting into the throat, can support and open the whole throat after insertion, and fully exposes the vocal cords under the surgical microscope lens, which satisfies convenient insertion and exposes the whole vocal cord in the visual range of the surgical microscope, and achieves both. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 is a front view of the present application.

[0022] Fig. 2 is a side view of the present application.

[0023] Fig. 3 is a three-dimensional schematic view of the present application.

[0024] Fig. 4 is a three-dimensional exploded view of the present application.

[0025] Fig. 5 is a schematic view of the handle, fixed cylinder, and tooth ring and gear structure thereon in the present application.

[0026] Fig. 6 is a state diagram of the support unit in the open state in the present application.

[0027] Fig. 7 is a state diagram of the support unit in the closed state in the present application.

[0028] Fig. 8 is an exploded view of the support unit in the present application.

[0029] Fig. 9 is a structure diagram of the arc-shaped plate and the wire wheel and guide piece thereon in the present application.

[0030] Fig. 10 is a schematic view of the flexible mechanism composed of multiple support units in the present application.

[0031] Fig. 11 is a state diagram of the present application before insertion into the laryngeal tube.

[0032] Fig. 12 is a front view in the state of Fig. 11.

[0033] Fig. 13 is a structure diagram after installing the arc-shaped cover plate on the small plate.

[0034] Fig. 14 is a three-dimensional diagram of the small plate in the present application in the expanded state after installing the cover plate.

[0035] Fig. 15 is a three-dimensional diagram of the small plate in the present application in the closed state after installing the cover plate. DETAILED DESCRIPTION

[0036] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0037] As shown in Figs. 1-15, the present application comprises a handle 1, a fixing cylinder 2 fixed on the left side of the handle 1, a plurality of support units 3 evenly distributed and connected end to end on the right side of the fixing cylinder 2, the support units 3 being capable of supporting the laryngeal tube open; the plurality of support units 3 forming a flexible mechanism with adjustable curvature;

[0038] The support unit 3 comprises two vertically arranged symmetrical small plates 4, two arc-shaped plates 5 between the two small plates 4, the two arc-shaped plates 5 being oppositely open, the end of the arc-shaped plate 5 being hingedly connected with the corresponding small plate 4 by a torsion spring, the two arc-shaped plates 5 being capable of being opened or closed; when the arc-shaped plates 5 on the plurality of support units 3 are simultaneously opened, the laryngeal tube can be supported open.

[0039] The lower ends of the small plates 4 on the same side in the adjacent support units 3 are hingedly connected together, forming a chain structure, a rotatable lead screw 6 being installed on the outer side of the small plate 4, a nut 7 being screwed on the lead screw 6, a connecting rod 8 being hingedly connected on the nut 7, the upper end of the connecting rod 8 being inclined to the right and being hingedly connected with the adjacent small plate 4; when the plurality of lead screws 6 are simultaneously rotated, the nuts 7 on the lead screws 6 gradually move the upper ends of the adjacent two small plates 4 closer through the connecting rod 8, and further make the flexible mechanism present a curved arc structure.

[0040] As shown in Figs. 1, 2, 3 and 4, in order to realize the simultaneous rotation of the plurality of lead screws 6 and further control the curvature of the flexible mechanism formed by the plurality of support units 3, an axial square hole is formed at the end of the lead screw 6, a square shaft 9 being inserted and installed in the square hole, the square shaft 9 being capable of axially sliding in the square hole but not being separated, the two square shafts 9 between the adjacent lead screws 6 being connected through a universal coupling 10; a rotatable gear ring 11 being sleeved on the outer side of the fixing cylinder 2, a rotatable gear 12 being installed on the fixing cylinder 2, the square shaft 9 on the leftmost side being fixed with the gear 12; when the gear ring 11 drives the leftmost square shaft 9 to rotate through the gear 12, the plurality of lead screws 6 are simultaneously rotated.

[0041] As shown in Figs. 4, 7, 8 and 11, in order to control the simultaneous opening or closing of the arc-shaped plates 5 on the plurality of support units 3, a screw rod 13 is arranged on the side wall of the fixing cylinder 2, the screw rod 13 being horizontally arranged and being capable of moving axially when being rotated, the right end of the screw rod 13 being connected with a main rope 14, the main rope 14 extending to the right; a wire wheel 15 being installed at the hinged part of the end of the arc-shaped plate 5, a secondary rope being wound on the wire wheel 15, the secondary rope being connected with the main rope 14; when the screw rod 13 is rotated and drives the main rope 14 to move to the left, the main rope 14 can simultaneously drive the plurality of wire wheels 15 to rotate through the plurality of secondary ropes, realizing the rotation of the plurality of arc-shaped plates 5 to the right, and further making the plurality of support units 3 present a closed state.

[0042] As shown in FIG. 7, 8, 9, in order to ensure that the two arc-shaped plates 5 in the same support unit 3 rotate at the same angle, the end of the arc-shaped plate 5 is provided with a tooth structure, and the tooth structure of the two arc-shaped plates 5 in the same support unit 3 is in meshing state.

[0043] As shown in FIG. 4, 8, in order to prevent the main rope 14 from interfering with the surgical view, the wire wheel 15 is between the arc-shaped plate 5 and the small plate 4, the outer side of the end of the arc-shaped plate 5 is provided with a recessed area, and the wire wheel 15 is in the recessed area; the main rope 14 passes through the plurality of support units 3 in turn.

[0044] As shown in FIG. 3, 4, in order to prevent the main rope 14 from being twisted off, the cap 16 is sleeved on the right end of the screw rod 13, the screw rod 13 drives the main rope 14 to move through the cap 16; the bearing is installed between the cap 16 and the screw rod 13; the screw rod 13 and the fixed cylinder 2 are connected through the threaded structure, and when the screw rod 13 rotates, the axial movement of the screw rod 13 is realized under the action of the threaded structure.

[0045] As shown in FIG. 6, 7, 8, 9, in order to facilitate the insertion of the tracheal tube and the optical fiber tube, the arc-shaped plate 5 is provided with a guide piece 17 in the middle, the cross section of the guide piece 17 is C-shaped, the left end of the guide piece 17 is fixed to the inner side of the arc-shaped plate 5 and the right end extends to the right; when the plurality of support units 3 are distributed in a straight line and the arc-shaped plates 5 thereof are in an open state, the plurality of guide pieces 17 can be connected end to end to form a guide rail.

[0046] As shown in FIG. 13, in order to prevent the connecting rod 8 from scratching the mucosa of the lateral wall of the laryngeal tube, the small plate 4 is provided with an arc-shaped cover plate 18 on the outer side, the cover plate 18 and the small plate 4 form a hollow structure, and the connecting rod 8 and the lead screw 6 are between the small plate 4 and the cover plate 18.

[0047] It is worth noting that the bearing is installed between the lead screw 6 and the small plate 4; the torsional spring is installed between the end of the arc-shaped plate 5 and the small plate 4, when the torsional spring is not subjected to external force, the two arc-shaped plates 5 in the same support unit 3 are both inclined to the right, as shown in FIG. 7, 8; the screw rod 13 drives the main rope 14 to move to the left through the cap 16, the main rope 14 drives the plurality of wire wheels 15 to rotate to the left at the same time, the torsional spring is compressed, and until the two arc-shaped plates 5 in the same support unit 3 are opposite to each other and in the same plane, that is, the support unit 3 is in an open state at this time, which supports the laryngeal tube, as shown in FIG. 6.

[0048] Before the insertion of the larynx, the two arc-shaped plates 5 in the support unit 3 need to be in the closed state as shown in Figures 7 and 8, so as to minimize the scratching of the laryngeal cavity side wall mucosa, and the tooth ring 11 needs to be screwed, the tooth ring 11 drives the plurality of lead screws 6 to rotate through the gear 12, the nuts 7 on the plurality of lead screws 6 pull the distance between the upper ends of the adjacent two small plates 4 through the connecting rods 8 thereon, so that the flexible mechanism composed of the plurality of support units 3 presents an arc-shaped bending, until the flexible mechanism presents a suitable arc, stop rotating the tooth ring 11, at this time, the state is shown in Figures 11, 12 and 15, then the invention is inserted into the larynx along the patient's oral cavity to the vocal cord position, and the larynx can be expanded.

[0049] When expanding, the screw rod 13 on the fixed cylinder 2 is screwed to move the screw rod 13 to the left, the main rope 14 is pulled to the left through the cap 16 during the movement of the screw rod 13 to the left, the two arc-shaped plates 5 in the support unit 3 are driven away from each other by the plurality of auxiliary ropes, and when the two arc-shaped plates 5 reach the state shown in Figure 6, the epiglottis and the larynx have been fully expanded, the entire device still presents an arc shape, and the vocal cords cannot be seen by the surgical microscope at this time, so the flexible mechanism needs to be adjusted back to a straight line. Specifically, the tooth ring 11 is reversely rotated, the tooth ring 11 drives the plurality of lead screws 6 to rotate at the same time through the gear 12, so that the plurality of nuts 7 move to the right side, and finally the plurality of support units 3 are arranged in a straight line, and thus the vocal cords are completely exposed in the field of view of the surgical microscope. The handle 1 is fixed on the fixing frame and remains stationary until the operation is completed, the above operation steps are reversely operated, and finally the invention is withdrawn.

[0050] As can be seen from the above, before the insertion of the larynx, the invention is contracted as much as possible to protect the laryngeal cavity mucosa as much as possible, after the insertion of the laryngeal cavity, the larynx is first supported open, and then the plurality of support units 3 are straightened, the entire process is divided into two steps of supporting and straightening, so as to reduce the sliding or displacement of the laryngoscope on the laryngeal mucosa, and protect the mucosa from mispositioning.

Claims

1. A flexible laryngoscope for use in surgery of the vocal cord fascia, characterized by, The utility model provides a flexible laryngeal support device, which comprises a handle (1), a fixed cylinder (2) fixed to the left side of the handle (1), a plurality of support units (3) uniformly distributed and connected end to end on the right side of the fixed cylinder (2), and a flexible mechanism formed by the plurality of support units (3). The support unit (3) comprises two vertically arranged small plates (4) symmetrically arranged front to back, two arc-shaped plates (5) between the two small plates (4), and the two arc-shaped plates (5) being oppositely open. The lower ends of the small plates (4) on the same side of adjacent support units (3) are hingedly connected together to form a chain structure, a rotatable lead screw (6) is arranged on the outer side of each small plate (4), a nut (7) is screwed on the lead screw (6), a connecting rod (8) is hingedly connected to the nut (7), and the upper end of the connecting rod (8) is obliquely arranged to the right and hingedly connected to the adjacent small plate (4).

2. The flexible laryngoscope for surgery of the vocal cord fascia according to claim 1, characterized by When the plurality of lead screws (6) are simultaneously rotated, the nuts (7) on the lead screws (6) gradually move the upper ends of the adjacent two small plates (4) closer to each other through the connecting rods (8), so that the flexible mechanism is in a curved arc-shaped structure.

3. The flexible laryngoscope according to claim 1, wherein The end of the lead screw (6) is provided with an axial square hole, a square shaft (9) is inserted into the square hole, the square shaft (9) can axially slide in the square hole but cannot be separated from the square hole, the two square shafts (9) between adjacent lead screws (6) are connected through a universal coupling (10), a rotatable gear ring (11) is sleeved on the outer side of the fixed cylinder (2), a rotatable gear (12) is arranged on the fixed cylinder (2), and the square shaft (9) on the leftmost side is fixed to the gear (12).

4. The flexible laryngoscope according to claim 3, characterized in that The fixed cylinder (2) is provided with a screw rod (13) on the side wall, the screw rod (13) is arranged horizontally and can move axially when the screw rod (13) is rotated, the right end of the screw rod (13) is connected to a main rope (14), and the main rope (14) extends to the right.

5. A flexible laryngoscope for use in surgery of the vocal fold fascia according to claim 3 or 4, characterized in that The end of the arc-shaped plate (5) is provided with a tooth structure, the tooth structures of the ends of the two arc-shaped plates (5) in the same support unit (3) are in meshing state. The wire wheel (15) is arranged between the arc-shaped plate (5) and the small plate (4), the outer side of the end of the arc-shaped plate (5) is provided with a recessed area, and the wire wheel (15) is arranged in the recessed area. The main rope (14) sequentially passes through the plurality of support units (3).

6. The flexible laryngoscope according to claim 5, wherein The screw rod (13) is sleeved with a cap (16) at the right end, the screw rod (13) drives the main rope (14) to move through the cap (16); a bearing is installed between the cap (16) and the screw rod (13); the screw rod (13) is connected with the fixed cylinder (2) through a threaded structure, when the screw rod (13) rotates, the axial movement of the screw rod (13) is realized under the action of the threaded structure.

7. The flexible laryngoscope according to claim 1, wherein The arc-shaped plate (5) is provided with a guide piece (17) in the middle part, the cross section of the guide piece (17) is C-shaped, the left end of the guide piece (17) is fixed to the inner side of the arc-shaped plate (5) and the right end extends to the right; when the plurality of support units (3) are distributed in a straight line and the arc-shaped plates (5) of the support units (3) are in an open state, the plurality of guide pieces (17) can be connected in a head-to-tail mode to form a guide rail.

8. The flexible laryngoscope according to any one of claims 1, 2, 3, 4, 7, wherein The small plate (4) is provided with an arc-shaped cover plate (18) on the outer side, the cover plate (18) and the small plate (4) form a hollow structure, the connecting rod (8) and the lead screw (6) are located between the small plate (4) and the cover plate (18).

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