CN109259975B

CN109259975B - Mandibular fixator

Info

Publication number: CN109259975B
Application number: CN201811258909.1A
Authority: CN
Inventors: 冷晓冬
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-10-26
Filing date: 2018-10-26
Publication date: 2024-03-26
Anticipated expiration: 2038-10-26
Also published as: CN109259975A

Abstract

The invention discloses a mandibular fixer, which comprises a headrest mechanism for supporting the bottom of the skull of a patient when the patient lies on a sickbed or an operating table, a head clamping mechanism arranged at two sides of the headrest mechanism and suitable for clamping the skull of the patient at two interauricular sides of the skull, and a mandibular lifting supporting mechanism suitable for lifting and supporting the mandible of the patient.

Description

Mandibular fixator

Technical Field

The invention relates to the technical field of medical appliances, in particular to a mandibular fixer.

Background

One of the main methods for clinical anesthesia is general anesthesia, and in the period of general anesthesia induction, the patient gradually gets mental hours, muscles are completely relaxed, and breathing is stopped, at this time, high-flow pure oxygen ventilation is required to be performed for 3-5 minutes, in order to keep the respiratory tract smooth, an anesthesiologist needs to recline the head of the patient and hold up the lower jaw of the patient, and then ventilation is assisted by an assistant, so that the process needs to be completed jointly by the anesthesiologist and the assistant, time and effort are wasted, and the lifting of the lower jaw is considered to be influenced by artificial force, and sometimes the lifting of the lower jaw cannot be guaranteed, so that the airway can be fully opened.

The sizes of the cranium of different patients are different, so in order to adapt the mandibular fixator to the sizes of the cranium of different patients, it is necessary to provide a translation structure which can clamp the cranium from both sides of the cranium and the ear space of the patient so that the cranium can be held stationary relative to the hospital bed or the operating table after lying on the hospital bed or the operating table. In addition, there is a need to provide a lifting and rotating structure that can be sized relative to the patient's cranium so that the mandible holder can be lifted from the mandible of the cranium to create a supporting lifting effect at the mandible.

Disclosure of Invention

The invention aims to provide a mandibular fixer, which aims to solve the technical problem that the mandibular fixer is adjusted according to the heads of different patients to realize the lifting support of the mandible of the patients.

The mandibular fixator of the present invention is implemented as follows:

a mandibular anchor comprising:

the headrest mechanism comprises a bottom supporting seat and a head supporting seat sleeved on the bottom supporting seat;

a head clamping mechanism including a pair of symmetrically disposed head clamping arms located on either side of the headrest mechanism and adapted to clamp the head from both interaural sides of the head; and

the lower jaw lifting support mechanism comprises lower jaw supporting arms which are respectively arranged on the pair of head clamping arms and are suitable for rotating around the head clamping arms.

In a preferred embodiment of the invention, the head support comprises a head support and a neck support integrally connected; an L-shaped step is formed between the head supporting part and the neck erection supporting part, and the height of the head supporting part relative to the bottom supporting seat is higher than that of the neck erection supporting part relative to the bottom supporting seat; and

A bottom supporting piece is arranged in the bottom supporting seat;

the head clamping arm comprises a translation member partially nested in the bottom support and adapted to move relative to the bottom support, a first support member fixedly attached to the translation member and disposed perpendicularly relative to the translation member, and a second support member attached to the first support member; the second support is adapted to move relative to and along the length of the first support; the translation member is moved relative to the base support by a firing unit to fire the translation member.

In a preferred embodiment of the invention, the bottom support is provided with a hollow accommodating cavity along the inner part of the bottom support in the length direction; the translating member is partially nested in the receiving cavity of the bottom support and adapted to move in the receiving cavity; the translation part is a hollow cavity with a hollow structure along the inside of the length direction; and

the firing unit comprises a firing assembly arranged in the hollow cavity and a firing part connected with the firing assembly and penetrating through the side wall of the translation piece;

the firing assembly comprises a hinge post fixedly connected with the cavity wall of the hollow cavity of the translation piece and a pair of hinge bodies hinged with the hinge post;

One end of each pair of the hinge bodies is provided with the firing part; and

the side wall of the translation piece is provided with an opening which is suitable for the firing part to pass through.

In a preferred embodiment of the present invention, a toggle block is provided at the other end of at least one of the pair of hinge bodies; an elliptical slotted hole is formed in the stirring block; and

the oval slot hole is sleeved on a pin shaft;

the pin shaft is connected with the guide assembly; the guide assembly comprises a movable block, a sawtooth block and a guide assembly, wherein one end of the movable block is rotationally connected with the cavity wall of the hollow cavity of the translation part through a hinge pin, and the sawtooth block is integrally connected with the other end of the movable block;

a notch suitable for the sawtooth block to pass through is formed in the side wall of the translation part;

the pin shaft is fixedly connected with the movable block; the sawtooth block is suitable for being contacted with the cavity wall of the accommodating cavity of the bottom support after passing through the opening, and the end surface of the sawtooth block, which is used for being contacted with the cavity wall of the accommodating cavity of the bottom support, is provided with a sawtooth structure; and the cavity wall of the accommodating cavity of the bottom support piece, which is suitable for being contacted with the sawtooth block, is provided with a sawtooth part with a strip-shaped structure.

In a preferred embodiment of the invention, the mandibular bracket is connected to the second support by a swivel unit;

The rotating unit comprises a positioning piece fixedly connected with the second supporting piece and a rotating assembly which is in contact connection with the positioning piece and is suitable for rotating around the positioning piece;

the positioning piece comprises a base body with a through annular perforation and a sawtooth section arranged on the side wall of the base body;

the rotating assembly comprises a bottom cover which is suitable for being connected with the positioning piece in a nested way, a top cover which is connected with the bottom cover in a covering way, and a meshing piece which is arranged on the bottom cover and is used for being meshed with the sawtooth section of the positioning piece and is of an arc-shaped structure; the side surface of the occluding part facing the sawtooth section is provided with a sawtooth-shaped occluding part;

the bottom cover is provided with a concave accommodating cavity, and a columnar positioning pin is arranged in the accommodating cavity and connected with the bottom cover;

one end part of the occluding piece is provided with a connecting port which is used for being rotationally connected with the columnar locating pin, and the other end part of the occluding piece is a movable end relative to the bottom cover;

the bottom cover is also provided with a through groove which is suitable for the positioning piece to pass through.

In a preferred embodiment of the present invention, a pair of positioning posts are disposed in the accommodating cavity of the bottom cover; and

an elastic ring is sleeved between the pair of positioning columns;

The side surface of the occluding piece, which is away from the positioning piece, is provided with an arc-shaped caulking groove which is suitable for the elastic ring to be partially embedded.

In a preferred embodiment of the present invention, the mandibular anchor further comprises a trigger unit; the triggering unit comprises a triggering component arranged in the inner cavity of the second supporting component, a triggering component connected with the triggering component and extending into the rotating component through the rear part of the side wall of the second supporting component, and a pressing component in contact connection with the triggering component;

the trigger piece penetrates out of the annular perforation to extend into the rotating assembly;

a group of limit parts which are symmetrically arranged to form a movable interval are also arranged in the accommodating cavity of the bottom cover; the positioning piece and the triggering piece are both positioned in the movable section;

the pressing piece comprises a first pressing part which is suitable for being clamped in the movable section to contact the trigger piece and a second pressing part which is integrally connected with the first pressing part and is suitable for protruding out of the accommodating cavity; the first pressing part is suitable for sliding contact with a group of limiting pieces; the bottom edge of the first pressing part is suitable for being abutted against the movable end of the occluding piece; and

inverted L-shaped limit grooves are symmetrically formed in opposite side ends of the group of limit pieces;

An L-shaped sinking groove suitable for being matched with the L-shaped limiting groove is formed between the first pressing part and the second pressing part.

In a preferred embodiment of the invention, the trigger member comprises a root portion of cylindrical configuration for connection to the trigger assembly, and a hemispherical top portion integrally connected to the root portion and adapted to extend into the rotating assembly;

the end face of the pressing piece, which faces the top, is provided with a raised strip which is raised and is suitable for propping against the top;

one end of the raised strip near the top is provided with a concave arc-shaped groove;

the arcuate slot is adapted to engage the top portion.

In a preferred embodiment of the invention, the trigger assembly comprises a pressure plate connected to the root portion, a projection provided at one end of the length of the pressure plate and protruding on the pressure plate adapted to contact the inner side wall of the first support; and

the pressing plate is hinged with the second supporting piece relative to the other end provided with one end of the convex block;

the side surface of the end, which is provided with the lug, of the pressing plate and is away from the lug is provided with a pair of connected helical tooth blocks;

the inner side wall of the first supporting piece is provided with a helical rack which is suitable for being meshed with the pair of helical teeth and is arranged in a straight line.

In a preferred embodiment of the present invention, the mandibular bracket is detachably provided with a pad.

By adopting the technical scheme, the invention has the following beneficial effects: the mandibular fixator of the present invention, the head clamping arm includes the first support and the second support which moves relative to the first support, the second support is connected with the first support by adjusting different positions of the second support, so as to adjust the overall height of the second support after being connected with the second support, thereby being suitable for the height of the skull relative to the sickbed in the state that the patient lies flat. And then through the rotating assembly which is arranged and can rotate relative to the second supporting piece, different angles of the rotating assembly relative to the second supporting piece are adjusted, so that the mandibular bracket connected with the rotating assembly can aim at the heights of the mandibles of different patients, and the mandible of the patient can be fully lifted.

The depth of the translation piece inserted into the bottom support piece can be realized through the adjustment of the position relation between the bottom support piece and the translation piece, so that the overall length formed after the translation piece is connected with the bottom support piece is adjusted, the first support piece connected with the translation piece is suitable for different sizes of the cranium of a patient to realize the adjustment of the distance between the first support piece and the auricular side of the cranium of the patient after the patient lies on a sickbed or an operating table, and the pair of head clamping arms can clamp the head of the patient.

Drawings

FIG. 1 is a schematic view showing the overall structure of a mandibular anchor according to the present invention;

FIG. 2 is a schematic view showing a first partial structure of the mandibular anchor of the present invention;

FIG. 3 is a schematic view showing a second partial structure of the mandibular anchor of the present invention;

FIG. 4 is a schematic view showing a third partial structure of the mandibular anchor of the present invention;

FIG. 5 is a schematic view showing a fourth partial structure of the mandibular anchor of the present invention;

FIG. 6 is a schematic view showing a fifth partial structure of the mandibular anchor of the present invention;

FIG. 7 is a schematic view showing a sixth partial structure of the mandibular anchor of the present invention;

FIG. 8 is a schematic view of a seventh part of the mandibular anchor of the present invention;

FIG. 9 is a schematic view showing an eighth partial structure of the mandibular anchor of the present invention;

FIG. 10 is a schematic view showing a ninth partial structure of the mandibular anchor of the present invention;

FIG. 11 is a schematic view showing a tenth partial structure of the mandibular anchor of the present invention;

FIG. 12 is a schematic view showing an eleventh portion of the mandibular anchor of the present invention;

FIG. 13 is an assembly view between the pad and the mandibular bracket of the mandibular anchor of the present invention;

FIG. 14 is an assembly view between the pad and the mandibular bracket of the mandibular anchor of the present invention;

fig. 15 to 21 are views showing a specific use process of the mandibular anchor of the present invention.

In the figure: the head support base 101, the head support 102, the head support 1021, the neck support 1022, the L-shaped step 1023, the bottom support 103, the serration 1031, the head clamp arm 200, the translation 201, the opening 2011, the notch 2012, the first support 202, the second support 203, the firing 204, the hinge post 205, the hinge 206, the toggle block 207, the oval slot 208, the pin 209, the movable block 210, the serration block 211, the rotation sleeve 212, the limit slot 213, the baffle 215, the limit ring 216, the parallel portion 2161, the arc portion 2162, the guide bar 217, the mandibular bracket 300, the positioning member 401, the annular perforation 4011, the base 4012, the serration 4013, the bottom cover 402, the receiving cavity 4021, the through slot 4022, the top cover 403, the snap 405, the snap 4051, the connection port 4053, the arc-shaped caulking 4055, the columnar positioning pin 406, the positioning post 407, the elastic ring 408, the limit 409, the trigger 501, the root 5011, the top 5012, the pressing member 502, the first pressing portion 5021, the second pressing portion 504, the protrusion 503, the boss 502, the boss 503, the rack 5024, the inclined bar 702.

Detailed Description

In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

Referring to fig. 1 to 21, the present embodiment provides a mandibular fixator including a headrest mechanism for supporting the bottom of the skull of a patient when the patient is lying on a hospital bed or an operating table, head clamping mechanisms provided on both sides of the headrest mechanism and adapted to clamp the skull of the patient on both auricular sides of the skull, and a mandibular lifting support mechanism adapted to lift and support the mandible of the patient.

Specifically, referring to fig. 1, the headrest mechanism includes a bottom support seat 101 and a head support seat 102 sleeved on the bottom support seat 101. The head support 102 includes a head support 1021 and a neck support 1022 integrally connected; an L-shaped step 1023 is formed between the head support 1021 and the neck support 1022, and the height of the head support 1021 relative to the base support 101 is greater than the height of the neck support 1022 relative to the base support 101, which is primarily designed to improve the comfort of the patient's head resting on the head support 102 in accordance with ergonomic characteristics. Inside the bottom support block 101 is a bottom support 103. Wherein the end surface of the head support 1021 for contacting the head of the patient is provided in a concave arc-shaped structure to conform to the ergonomic characteristics.

In order to provide comfort for the patient's head to rest on the headrest mechanism, and also to facilitate reduced wear of the headrest mechanism, a head support sleeve is provided over the end of the head support 102 facing the patient's head. The head support sleeve can be made of medical silica gel materials, and the head support sleeve can be sleeved on the head support frame by using the elasticity of the medical silica gel materials. The structure can improve the comfort level of the patient after the head of the patient is placed on the head support frame on the one hand, and on the other hand, the head support sleeve is convenient and efficient to detach when the head support sleeve is worn or needs to be replaced due to other reasons, and the head support sleeve and the head support frame can be detached without using external auxiliary instruments.

The head clamping mechanism includes a pair of symmetrically disposed head clamping arms 200, one on each side of the headrest mechanism, adapted to clamp the head from both interaural sides of the head. The mandibular lifting support mechanism includes mandibular bracket 300 respectively provided on a pair of head clamping arms 200 and adapted to rotate about the head clamping arms 200.

The head clamping arm 200 comprises a translation member 201 partially nested in the bottom support member 103 and adapted to move relative to the bottom support member 103, a first support member 202 fixedly attached to the translation member 201 and disposed perpendicularly relative to the translation member 201, and a second support member 203 attached to the first support member 202; the second support 203 is adapted to move relative to the first support 202 and along the length of the first support 202; the translating member 201 is moved relative to the base support member 103 by a firing unit to fire the translating member 201.

The pair of head clamping arms 200 in this embodiment are symmetrically disposed, so that the translation members 201 included in the pair of head clamping arms 200 are also symmetrically disposed, and thus, in this embodiment, only the connection relationship between one translation member 201 and the bottom support 103 is taken as an example to illustrate how the position between the translation member 201 and the bottom support 103 is adjusted.

Specifically, the bottom support 103 has a hollow accommodating cavity along the length direction, and both ends of the bottom support 103 along the length direction are both provided with an opening 2011 structure to realize that the translation member 201 is partially inserted into the accommodating cavity from the opening 2011 structure, and the translation member 201 is partially nested in the accommodating cavity of the bottom support 103 and is suitable for moving in the accommodating cavity; the translation part 201 is a hollow cavity with a hollow structure along the inside of the length direction; and the firing unit comprises a firing assembly arranged in the hollow cavity and a firing part 204 which is connected with the firing assembly and penetrates through the side wall of the translation piece 201. The difference of the depth of the translation member 201 inserted into the accommodating cavity nested in the bottom supporting member 103 can realize the difference of the integral length formed after the translation member 201 is connected with the bottom supporting member 103, so that the support and fixation of the cranium applicable to different patients can be satisfied.

Referring still specifically to fig. 9 and 10, the firing assembly includes a hinge post 205 fixedly coupled to a wall of the hollow cavity of the translating member 201, and a pair of hinge bodies 206 hingedly coupled to the hinge post 205; one end of each of the pair of hinge bodies 206 is provided with a firing part 204; and the side wall of the translation member 201 is provided with an opening 2011 adapted to be penetrated by the firing portion 204. Since the firing portion 204 is partially located outside the side wall of the translation member 201 through the opening 2011, the firing portions 204 respectively provided on the pair of hinge bodies 206 are pinched by the hand of the human body, and thus the adjustment of the positions of the pair of hinge bodies 206 can be achieved through the opposite or opposite movement of the firing portions 204 respectively corresponding to the pair of hinge bodies 206. The hinge post 205 in this embodiment is optionally located in a central position of the hinge body 206 such that the hinge body 206, under the influence of the firing portion 204, creates a motion effect about the hinge post 205.

Referring to fig. 10, in order to enable adjustment of the positions of the pair of hinge bodies 206 to adjust the positions between the translation member 201 and the bottom support member 103, a toggle block 207 is disposed at the other end of at least one hinge body 206 of the pair of hinge bodies 206; the toggle block 207 is provided with an oval slot 208. The oval slot 208 is sleeved on a pin 209, wherein the horizontal length of the oval slot 208 is approximately twice the diameter of the pin 209, so that the pin 209 can move in the oval slot 208. The pin 209 is connected to the guide assembly. The guiding assembly comprises a movable block 210 with one end rotatably connected with the cavity wall of the hollow cavity of the translation piece 201 through a hinge pin and a sawtooth block 211 integrally connected with the other end of the movable block 210; the side wall of the translation member 201 is provided with a notch 2012 suitable for the saw tooth block 211 to pass through, and the size of the notch 2012 is larger than that of the saw tooth block 211, so that the saw tooth block 211 is convenient to move at the notch 2012. The pin 209 is fixedly connected with the movable block 210; the sawtooth block 211 is suitable for contacting with the cavity wall of the accommodating cavity of the bottom support 103 after passing through the notch 2012, and the end surface of the sawtooth block 211 for contacting with the cavity wall of the accommodating cavity of the bottom support 103 is provided with a sawtooth structure; and the cavity wall of the accommodating cavity of the bottom support member 103, which is suitable for being contacted with the sawtooth block 211, is provided with a sawtooth portion 1031 with a strip-shaped structure, when the translation member 201 and the bottom support member 103 are locked in a position state, that is, when the translation member 201 cannot adjust the position relationship between the translation member and the bottom support member 103, the sawtooth block 211 and the sawtooth portion 1031 of the bottom support member 103 are in a bit engagement locking relationship, and when the position relationship between the translation member 201 and the bottom support member 103 is required, the locking relationship between the sawtooth block 211 and the sawtooth portion 1031 is required to be released first.

The firing assembly of this embodiment is implemented as follows:

in this embodiment, only the case where the toggle block 207 is provided on one hinge body 206 of the pair of hinge bodies 206 is taken as an example, such a structure is to save the space of the accommodating cavity of the bottom supporting member 103, because the translation members 201 are inserted from two sides in the length direction of the bottom supporting member 103 in the accommodating cavity of the bottom supporting member 103, that is, the pair of translation members 201, so that one toggle block 207 is provided on each of the pair of translation members 201, and the toggle blocks 207 of the pair of translation members 201 are arranged in a staggered arrangement, that is, the hinge bodies 206 corresponding to the toggle blocks 207 are different hinge bodies 206 on different translation members 201, that is, the pair of translation members 201 form a central symmetrical structure instead of an axisymmetrical structure; in this way, the length of the hinge body 206, which is not provided with the toggle block 207, of the pair of hinge bodies 206 corresponding to the pair of translation members 201 is smaller than the length of the other end of the end provided with the firing portion 204, which is provided with the toggle block 207, of the pair of hinge bodies 206, and the end provided with the toggle block 207 is fixedly arranged on the hinge body 206, so that the space of the accommodating cavity of the bottom support member 103 is fully utilized. When the firing portions 204 respectively provided on the pair of hinge bodies 206 move in opposite directions under the action of external force, the stirring block 207 on the hinge body 206 provided with the stirring block 207 and the end portion of the hinge body 206 not provided with the stirring block 207 also move in opposite directions, at this time, the oval slot 208 on the stirring block 207 forms a pulling action on the pin shaft 209, so that the pin shaft 209 drives the movable block 210 to rotate around the hinge pin, in the process of rotating the movable block 210, the sawtooth portion 211 provided on the movable block 210 and the sawtooth portion 1031 provided on the cavity wall of the bottom support member 103 and suitable for being in contact with the sawtooth portion 211 are disengaged from each other, then the translation member 201 is pulled again, the depth of the translation member 201 inserted into the cavity wall of the bottom support member 103 is adjusted to adjust the position relationship between the translation member 201 and the bottom support member 103, and after the position of the translation member 201 and the bottom support member 103 is adjusted in place, the external force applied to the hinge body 206 is relieved, so that the movable block 210 is gradually reset in the process of resetting the movable block 210, and finally the movable block 210 is gradually reset, so that the new position relationship between the sawtooth portion 211 and the sawtooth portion 1031 provided on the bottom support member 103 is formed, and a new position relationship between the translation member 103 and the bottom support member 103 is achieved.

Referring to fig. 10 and 11, in order to limit the rotation track of the movable block 210 around the hinge pin, the end of the movable block 210 connected to the hinge pin in this embodiment is integrally provided with a cylindrical rotation sleeve 212, and the rotation sleeve 212 is sleeved on the hinge pin such that the movable block 210 drives the rotation sleeve 212 to rotate relative to the hinge pin; and a limiting groove 213 which is of a semicircular structure and is suitable for being in fit contact connection with the rotating sleeve 212 is fixedly arranged on the cavity wall of the hollow cavity of the translation member 201; the arc-shaped opening of the limiting groove 213 is arranged towards one side of the sawtooth block 211. A side wall of the arc-shaped groove 5024, which is away from the arc-shaped opening, is connected with a baffle 215, the baffle 215 is fixedly connected with a cavity wall of the hollow cavity of the translation member 201, in the process that the movable block 210 rotates around the hinge pin, the baffle 215 can be touched when the movable block 210 rotates to a certain angle, the baffle 215 can form resistance for continuous rotation of the movable block 210, the saw-tooth block 211 arranged on the movable block 210 can not be completely separated from the notch 2012 in the process that the movable block 210 rotates through the baffle 215, namely, the saw-tooth block 211 and the saw-tooth part 1031 of the bottom support member 103 are released from the engagement relationship, and meanwhile, the saw-tooth block 211 can still be partially clamped in the notch 2012, so that in the process that a pair of hinge bodies 206 are reset, the saw-tooth block 211 can pass through the notch 2012 and the saw-tooth part 1031 of the bottom support member 103 form the engagement locking relationship under a new position. In order to effectively utilize the space of the receiving cavity of the bottom support 103, the housing of the translation member 201 includes a main body 2015 for receiving the pair of hinge members 206 and an auxiliary body 2016 connected to the main body 2015 for receiving the baffle 215 and the rotation sleeve 212 and the limiting groove 213, the auxiliary body 2016 has a smaller size than that of the main body 2015, and the pair of head clamping arms 200 respectively include the auxiliary body 2016 of the translation member 201 adapted to be relatively inserted into the cavity of the main body 2015 of the other, i.e., the auxiliary body 2016 of the translation member 201 of one head clamping arm 200 can be inserted into the cavity of the main body 2015 of the translation member 201 of the other head clamping arm 200 during the movement relative to the bottom support 103.

To allow for effective return of the pair of hinge bodies 206 upon contact by external forces applied to the firing block, the firing assembly also includes a stop collar 216 of a symmetrically disposed annular configuration. The stop collar 216 comprises a pair of parallel portions 2161 adapted to be arranged parallel to the cavity wall of the hollow cavity of the translator 201, and two arcuate portions 2162 located between the pair of parallel portions 2161 to connect the ends of the pair of parallel portions 2161; a pair of hinge bodies 206 are respectively provided with a group of arc-shaped grooves 5024 which are suitable for being clamped with the arc-shaped parts 2162 at the side ends of the cavity walls of the hollow cavity of the translation member 201; a pair of arcuate slots 5024 are symmetrically disposed about the hinge body 206. Specifically, the openings 5024 of the arc grooves 5024 on the same side of the hinge post 205 on the pair of hinge bodies 206 are clamped with the two arc portions 2162 of one of the limiting rings 216 in the pair of limiting rings 216, that is, the two arc portions 2162 of the same limiting ring 216 are respectively clamped with the openings 5024 of the arc grooves 5024 on the pair of (i.e., two) hinge bodies 206, wherein the limiting rings 216 are made of elastic materials. That is, after the corresponding firing blocks of the pair of hinge bodies 206 are subjected to external force, the pair of hinge bodies 206 move towards each other, at this time, the limiting ring 216 is stretched and deformed, at this time, the elastic deformability of the limiting ring 216 also limits the movement range of the pair of hinge bodies 206, so that the saw-tooth block 211 can be prevented from being partially clamped in the notch 2012 while the saw-tooth block 211 corresponding to the pair of hinge bodies 206 is disengaged from the saw-tooth portion 1031 of the bottom support 103, and thus, the saw-tooth block 211 can be effectively ensured to pass through the notch 2012 to form a new snap-lock relationship with the saw-tooth portion 1031 of the bottom support 103 in the resetting process of the pair of hinge bodies 206. When the external force applied to the firing blocks corresponding to the pair of hinge bodies 206 is removed, the pair of hinge bodies 206 can also quickly restore to the original state due to the deformation and restoration capabilities of the elastic ring 408, so that the translation member 201 and the bottom support member 103 quickly form a locking relationship in a new position.

Referring to fig. 9, in order to improve the smoothness of the moving process of the translation member 201 relative to the bottom support member 103, a pair of guide bars 217 are disposed on the outer sidewall of the translation member 201 along the length direction of the translation member 201 and are respectively located at two sides of the notch 2012. The surface of the guide strip 217 that contacts the cavity wall of the bottom support 103 may optionally be provided as an arcuate surface to reduce friction between the guide strip 217 and the cavity wall of the bottom support 103.

The mandibular bracket 300 in this embodiment is connected to the second support 203 by a swivel unit. The rotation unit comprises a positioning member 401 fixedly connected with the second supporting member 203, and a rotation assembly in contact with the positioning member 401 and adapted to rotate around the positioning member 401; the rotation unit is used to support the mandible from the mandible after the patient lies flat on the patient's bed during use of the mandible holder.

Specifically, the positioning member 401 includes a base body 4012 having a through annular aperture 4011 therethrough and a serration section 4013 disposed on a sidewall of the base body 4012; the length of the serration section 4013 is 2/5 to 1/2 of the entire circumference of the sidewall of the base 4012.

Referring to fig. 2 and 3, the rotating assembly includes a bottom cover 402 adapted to be nestably connected to the positioning member 401 and a top cover 403 in covering connection with the bottom cover 402, and a snap member 405 in an arcuate configuration provided on the bottom cover 402 for engaging with the serration 4013 of the positioning member 401; the side of the engagement member 405 facing the serration section 4013 is provided with a serration-like engagement portion 4051. It should be noted that, the length of the engaging portion 4051 is smaller than the length of the saw-tooth segment 4013, where the length of the engaging portion 4051 may alternatively be 2/5-1/2 of the entire length of the saw-tooth segment 4013, and the length of the engaging portion 4051 is mainly used to determine the range of the rotation angle of the bottom cover 402 relative to the positioning member 401, that is, different angles of the bottom cover 402 relative to the positioning member 401 are realized by engaging different portions of the engaging portion 4051 and the saw-tooth segment 4013. In this embodiment, the engagement portion 4051 engages with the serration section 4013 to position the bottom cover 402 relative to the positioning member 401, that is, to rotate the bottom cover 402 relative to the positioning member 401, so as to prevent the bottom cover 402 from rotating relative to the positioning member 401, thereby maintaining the stability of the state of the bottom cover 402 during use. When the bottom cover 402 needs to be rotated, the engagement piece 405 releases the engagement with the saw-tooth section 4013 of the positioning piece 401, so that the engagement piece 405 arranged on the bottom cover 402 rotates synchronously with the bottom cover 402, and in the process that the engagement piece 405 rotates along with the bottom cover 402, after the rotation of the bottom cover 402 is stopped, the engagement portion 4051 on the engagement piece 405 is engaged with different parts of the saw-tooth section 4013 of the positioning piece 401.

Referring to fig. 3, the bottom cover 402 has a recessed receiving cavity 4021, and a column-shaped positioning pin 406 is connected to the bottom cover 402 in the receiving cavity 4021; one end of the engaging member 405 is provided with a connecting port 4053 for rotational connection with the columnar positioning pin 406, and the other end of the engaging member 405 is a movable end with respect to the bottom cover 402; the bottom cover 402 also has a through slot 4022 adapted to pass the positioning member 401. When the bottom cover 402 needs to be rotated, the engaging portion 4051 of the engaging member 405 needs to be disengaged from the saw-tooth section 4013 of the positioning member 401, so that the bottom cover 402 and the engaging member 405 rotate relative to the positioning member 401, in this process, in order to enable the engaging portion 4051 of the engaging member 405 to disengage from the saw-tooth section 4013 of the positioning member 401, the engaging member 405 is rotated around the cylindrical positioning pin 406 by pressing the movable end of the engaging member 405, and in the process that the engaging member 405 rotates around the cylindrical positioning pin 406, the engaging portion 4051 of the engaging member 405 gradually deviates from the saw-tooth section 4013 of the positioning member 401, so that the engaging portion 4051 of the engaging member 405 is disengaged from the saw-tooth section 4013 of the positioning member 401.

The length of the engaging portion 4051 is mainly used to determine the range of the rotation angle of the bottom cover 402 relative to the positioning member 401, and the engaging portion 4051 in this embodiment is located at the middle of the side surface of the engaging member 405 facing the saw tooth section 4013 and extends towards both ends; and the length of the bite 4051 is 3/5 to 1/2 of the length of the side of the overall bite 405 facing the serration section 4013.

In order to enable the engagement member 405 to engage the engagement portion 4051 of the engagement member 405 with the saw-tooth section 4013 of the positioning member 401 after the bottom cover 402 is rotated into position to fix the position of the bottom cover 402 relative to the positioning member 401, a pair of positioning posts 407 are provided in the receiving cavity 4021 of the bottom cover 402; and an elastic ring 408 is sleeved between the pair of positioning posts 407; the side of the snap-in element 405 facing away from the positioning element 401 is provided with an arc-shaped recess 4055 adapted for the partial insertion of the elastic ring 408. That is, during the process of rotating the bottom cover 402, the engaging member 405 rotates around the cylindrical positioning pin 406 away from the positioning member 401, at this time, the elastic ring 408 partially clamped in the engaging member 405 is stretched and deformed, and after stopping rotating the bottom cover 402, under the restoring deformation force of the elastic ring 408, the elastic ring 408 causes the engaging member 405 to rotate around the cylindrical positioning pin 406 near the positioning member 401, so as to achieve the engagement connection between the engaging portion 4051 of the engaging member 405 and the saw-tooth segment 4013 of the positioning member 401. Wherein, alternatively, the elastic ring 408 is made of elastic rubber band. For the elasticity of the elastic ring 408, it should be noted that the elastic ring 408 with the matching deformation, i.e. the elastic coefficient, is selected according to the torsion force and the restoring force required for the actual rotation, and the specific method for determining the elastic coefficient range of the elastic ring 408 is not described in detail in this embodiment.

The mandibular fixator further includes a trigger unit including a trigger assembly provided in the inner cavity of the second support 203, a trigger member 501 connected to the trigger assembly and extending into the rotating assembly through the rear portion of the side wall of the second support 203, and a pressing member 502 in contact with the trigger member 501, the trigger member 501 penetrating out of the annular penetration 4011 to extend into the rotating assembly. The trigger unit designed in this embodiment can be used to trigger not only the adjustment of the position of the second supporting member 203 of the lifting unit relative to the first supporting member 202, but also the adjustment of the position of the rotating assembly relative to the positioning member 401 by the cooperation of the trigger member 501 and the pressing member 502. The trigger unit designed in this embodiment can be used to trigger not only the adjustment of the position of the second support 203 of the lifting unit relative to the first support 202, but also the adjustment of the position of the rotating assembly relative to the positioning member 401 by the cooperation of the trigger 501 and the pressing member 502.

Referring to fig. 6, in particular, a set of limiting members 409 symmetrically disposed to form a movable section are further disposed in the accommodating cavity 4021 of the bottom cover 402; both the positioning member 401 and the triggering member 501 are located within the active zone. The pressing piece 502 includes a first pressing portion 5021 adapted to be snapped into the movable section to contact the trigger piece 501 and a second pressing portion 5022 integrally connected to the first pressing portion 5021 and adapted to protrude outside the housing cavity 4021; the first pressing portion 5021 is adapted to be in sliding contact with a set of stoppers 409; the bottom (here, it should be noted that "bottom" refers to the end facing away from the second pressing portion 5022) edge of the first pressing portion 5021 is adapted to abut against the movable end of the snap member 405; and inverted L-shaped limit grooves 4091 are symmetrically arranged on opposite side ends of the group of limit pieces 409; an L-shaped sink 5025 adapted to fit in the L-shaped stopper groove 4091 is formed between the first pressing portion 5021 and the second pressing portion 5022.

In this embodiment, the design of the pressing member 502 mainly has two functions, and the first function of the pressing member 502 is that, by sliding contact between the first pressing portion 5021 and the set of limiting members 409, when the second pressing portion 5022 is pressed from the second pressing portion 5022 to the first pressing portion 5021, the second pressing portion 5022 moves in the moving section, and in the moving process, since the bottom of the first pressing portion 5021 abuts against the moving end of the engaging member 405, after the first pressing portion 5021 is pressed along with the second pressing portion 5022, the first pressing portion 5021 can form a pressing function on the moving end of the engaging member 405, so that in the process that the bottom cover 402 needs to rotate relative to the positioning member 401, the engaging member 405 gradually releases the engaging relationship with the saw-tooth section 4013 of the positioning member 401 under the action of the pressing member 502. The pressing member 502 gradually resets as the snap member 405 is reset with respect to the positioning member 401 by the elastic ring 408.

The second function of the designed pressing piece 502 is to press against the trigger piece 501 so that the second supporting piece 203 can be adjusted with respect to the position of the first supporting piece 202, in particular, the trigger piece 501 comprises a base 5011 of columnar structure for connection with the trigger assembly, and a hemispherical top 5012 integrally connected with the base 5011 and adapted to be inserted into the rotating assembly; the end face of the pressing piece 502 facing the top 5012 is provided with a raised strip 5023 which is suitable for abutting against the top 5012; one end of the raised strip 5023 near the top 5012 is provided with a concave arc-shaped groove 5024; the arcuate slot 5024 is adapted to engage the top 5012. After the pressing member 502 is pressed, the protruding strip 5023 gradually moves toward the top 5012 of the triggering member 501 in the process of moving the pressing member 502 toward the engaging member 405, and in this process, the body of the protruding strip 5023 is in a protruding structure relative to the recessed arc groove 5024, so that the recessed arc groove 5024 is in a fit relationship with the top 5012 of the triggering member 501, and the protruding strip 5023 forms a pressing force against the triggering member 501, so that the triggering member 501 moves toward a direction away from the pressing member 502 under the pressing action of the pressing member 502.

Referring to fig. 5 and 6, the trigger assembly of the present embodiment includes a pressing plate 503 connected to a root 5011, and a protrusion 504 provided at one end of the length of the pressing plate 503 and protruding on the pressing plate 503 and adapted to contact an inner sidewall of the first supporting member 202; and the other end of the pressing plate 503 opposite to the one end provided with the projection 504 is hinged with the second supporting member 203; the side surface of the end of the pressing plate 503, which is provided with the protruding block 504 and is away from the protruding block 504, is provided with a pair of connected helical tooth blocks 505; the inner side wall of the first support 202 is provided with a helical rack 506 in a linear arrangement adapted to engage with a pair of helical teeth. When the first support 202 and the second support 203 are in a locked state, that is, when the second support 203 cannot adjust the connection position with the first support 202 relative to the first support 202, the helical tooth blocks 505 on the pressing plate 503 and the helical racks 506 on the inner side walls of the first support 202 are in a snap-lock state, at this time, the protrusions 504 and the inner side walls of the first support 202 are in a non-direct contact state, that is, a certain gap is left between the protrusions 504 and the inner side walls of the first support 202, and the top 5012 of the trigger 501 connected with the pressing plate 503 in an initial state is inserted into the receiving cavity 4021 of the bottom cover 402 after passing through the annular perforation 4011 of the positioning member 401. When the connection between the first support member 202 and the second support member 203 needs to be adjusted, the protruding strips 5023 of the pressing member 502 apply pressure to the top 5012 of the trigger member 501, so that the trigger member 501 moves towards the pressing plate 503, and the pressure applied to the pressing plate 503 is applied, because one end of the pressing plate 503 is hinged to the inner side wall of the second support member 203, after receiving the pressure from the trigger member 501, one end of the pressing plate 503 provided with the protruding blocks 504 moves towards the inner side wall of the first support member 202 under the action of the pressure, when the protruding blocks 504 are in abutting contact with the inner side wall of the first support member 202, the skewed tooth blocks 505 on the pressing plate 503 are disengaged from the skewed tooth racks 506 on the inner side wall of the first support member 202, the position relationship of the second support member 203 relative to the first support member 202 can be adjusted by moving the second support member 203, after the position of the second support member 203 relative to the first support member 202 is adjusted, the pressure applied to the pressing member 502 is released, so that the pressing member 502 is reset, the trigger member is reset along with the reset, the reset of the pressing member 502 is reset, the initial reset, the pressing member is reset, the corresponding to the reset member 202 is reset, and the corresponding to the first support member 202 is in a new position, and the initial relationship between the skewed tooth blocks 505 and the first support member 202 is formed, and the initial position, and the corresponding position between the skewed tooth blocks is not in the initial position, and the whole.

Referring to fig. 13 and 14, more particularly, a mandibular bracket 300 is used to support and cradle the mandible of a patient. In order to play an antibacterial and hygienic role, a support pad 700 is detachably arranged on the mandibular support arm 300, the support pad 700 is a disposable support pad 700, and different support pads 700 are assembled for different patients. Here, alternatively, the pad 700 is connected to the mandibular supporting arm 300 through the insert bar 702 integrally connected to the pad 700, and the corresponding mandibular supporting arm 300 is provided with a cavity having one end opened and communicating with the opening to receive the insert bar 702, so as to detachably connect the pad 700 to the mandibular supporting arm 300. The insert rod 702 is only required to be connected with the cavity of the mandibular bracket 300 in a normal plug-in manner, when the bracket 700 contacts the mandible of a patient, the insert rod 702 is tightly matched with the cavity by clamping the second supporting pieces 203 corresponding to the two interauricular sides of the head of the patient to the head of the patient, and the insert rod 702 is not separated from the cavity.

In summary, the specific implementation principle of the triggering unit of this embodiment is:

the pressing piece 502 of this embodiment is pressed by external force in the process of using the mandibular fixator through two functions of the pressing piece 502, so that the pressing piece 502 presses the trigger piece 501 under the action of pressure, on one hand, the helical tooth blocks 505 on the pressing plate 503 connected with the trigger piece 501 can be conveniently released from the engagement relationship with the helical racks 506 on the inner side wall of the first supporting piece 202, and therefore the second supporting piece 203 can adjust the position relationship with the first supporting piece 202 to finally realize the integral height of the first supporting piece 202 connected with the second supporting piece 203. On the other hand, the pressing member 502 also presses the movable end of the engaging member 405, so that the engagement locking relationship between the engaging member 405 and the positioning member 401 is released, facilitating the rotation of the bottom cover 402, so that the mandibular joint arm connected to the bottom cover 402 can adjust the corresponding angle formed with respect to the second support member 203 according to the mandibular position of the patient. After the above adjustment of the positions of the first support member 202 and the second support member 203 and the angle formed by the mandibular drop arm with respect to the second support member 203 are completed, the pressure applied to the pressing member 502 is released, and after the pressing member 502 is in pressure contact, the pressing plate 503 is reset in the process of resetting, so that the second support member 203 and the first support member 202 form a locked state in a new position, and the engaging member 405 is reset, so that the bottom cover 402, together with the mandibular drop arm 300, forms a locked state in a new position with respect to the second support member 203.

In summary, in the use process of the mandibular fixator of the present embodiment, the head of the patient is placed on the head support sleeve, the head support frame forms a supporting effect from the bottom ends of the head and neck, and then the position of the pair of head clamping arms 200 relative to the head support frame is adjusted through the adjustment of the position between the translation member 201 and the bottom support member 103 to form a clamping and fixing effect on the two auricular sides of the head of the patient; furthermore, the adjustment of the positions of the first support 202 and the second support 203 is achieved by means of a triggering unit, while the position of the mandibular bracket 300 relative to the second support 203 is adjusted such that the mandibular bracket 300 forms a supporting lifting effect on the patient's mandible.

All parts included in the mandibular fixator of the embodiment can be made of plastic materials, so that the mandibular fixator of the embodiment can be used in a nuclear magnetic resonance imaging examination room or an interventional radiosurgery process, and the influence of the parts made of metal materials on nuclear magnetic resonance imaging and the interventional radiosurgery can be avoided, and therefore, the mandibular fixator is wide in application range and can be widely popularized and used in various operations of hospitals and tracheal intubation.

The foregoing embodiments have been provided for the purpose of illustrating the general principles of the present invention, and are more fully described herein with reference to the accompanying drawings, in which the principles of the present invention are shown and described, and in which the general principles of the invention are defined by the appended claims.

In the description of the present invention, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the mechanism or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present invention, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.

Claims

1. A mandibular anchor, comprising:

the lower jaw lifting support mechanism comprises lower jaw supporting arms which are respectively arranged on the pair of head clamping arms and are suitable for rotating around the head clamping arms;

the head supporting seat comprises a head supporting part and a neck erection supporting part which are integrally connected; an L-shaped step is formed between the head supporting part and the neck erection supporting part, and the height of the head supporting part relative to the bottom supporting seat is higher than that of the neck erection supporting part relative to the bottom supporting seat; and

a bottom supporting piece is arranged in the bottom supporting seat;

the head clamping arm comprises a translation member partially nested in the bottom support and adapted to move relative to the bottom support, a first support member fixedly attached to the translation member and disposed perpendicularly relative to the translation member, and a second support member attached to the first support member; the second support is adapted to move relative to and along the length of the first support; the translation piece moves relative to the bottom support piece through a firing unit;

The bottom support piece is internally provided with a containing cavity with a hollow structure along the length direction; the translating member is partially nested in the receiving cavity of the bottom support and adapted to move in the receiving cavity; the translation part is a hollow cavity with a hollow structure along the inside of the length direction; and

one end of each pair of the hinge bodies is provided with the firing part; and

the side wall of the translation piece is provided with an opening which is suitable for the firing part to pass through;

the other end of at least one of the pair of hinge bodies is provided with a poking block; an elliptical slotted hole is formed in the stirring block; and

the oval slot hole is sleeved on a pin shaft;

the pin shaft is fixedly connected with the movable block; the sawtooth block is suitable for being contacted with the cavity wall of the accommodating cavity of the bottom support after passing through the opening, and the end surface of the sawtooth block, which is used for being contacted with the cavity wall of the accommodating cavity of the bottom support, is provided with a sawtooth structure; and the cavity wall of the accommodating cavity of the bottom support piece, which is suitable for being contacted with the sawtooth block, is provided with a sawtooth part with a strip-shaped structure;

the lower jaw bracket arm is connected with the second supporting piece through a rotating unit;

2. The mandibular anchor of claim 1, wherein a pair of positioning posts are provided within the receiving cavity of the bottom cap; and

an elastic ring is sleeved between the pair of positioning columns;

3. The mandibular fixation according to any one of claims 1 or 2, wherein the mandibular fixation further comprises a trigger unit; the triggering unit comprises a triggering component arranged in the inner cavity of the second supporting component, a triggering component connected with the triggering component and extending into the rotating component through the rear part of the side wall of the second supporting component, and a pressing component in contact connection with the triggering component;

4. A mandibular anchor according to claim 3, wherein the trigger comprises a root portion of cylindrical configuration for connection to the trigger assembly, and a hemispherical roof portion integrally connected to the root portion adapted to extend into the rotating assembly;

the arcuate slot is adapted to engage the top portion.

5. The mandibular anchor of claim 4, wherein the trigger assembly comprises a pressure plate connected to the root portion, a projection provided at one end of the length of the pressure plate and protruding on the pressure plate adapted to contact an inner side wall of the first support member; and

6. The mandibular anchor of claim 1 wherein the mandibular bracket is removably provided with a pad.