CN114343697B

CN114343697B - Manual rotation jaw support for oral cavity CT

Info

Publication number: CN114343697B
Application number: CN202111653500.1A
Authority: CN
Inventors: 王继斌; 张继新; 王振军; 孙宇; 王亚杰; 张文宇; 吴宏新
Original assignee: BEIJING LANGSHI INSTRUMENT CO LTD
Current assignee: BEIJING LANGSHI INSTRUMENT CO LTD
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2023-05-09
Anticipated expiration: 2041-12-30
Also published as: CN114343697A

Abstract

The invention provides a manual rotary jaw support for oral CT, which belongs to the technical field of oral CT and comprises the following components: the jaw support body is provided with a supporting surface for supporting a human body; the upper end of the rotating shaft is connected with the jaw support body; the jaw bracket is sleeved on the rotating shaft and is rotationally connected with the rotating shaft; the jaw bracket is suitable for being fixedly connected with CT equipment; a locking structure disposed between the rotational shaft and the jaw bracket; the locking structure is adapted to lock the rotation axis and the jaw mount in different positions along an axial direction of the rotation axis; according to the manual rotating jaw support for oral CT, the rotating shaft and the jaw support are locked at different positions through the locking structure, so that jaw support bodies at the upper end of the rotating shaft have different heights, the jaw support bodies at different heights can be supported without replacing the jaw support, the operation is simple, the number of jaw supports can be reduced, and the cost is saved.

Description

Manual rotation jaw support for oral cavity CT

Technical Field

The invention relates to the technical field of oral cavity CT, in particular to a manual rotary jaw support for oral cavity CT.

Background

When the oral cavity CT photographs the oral cavity of a human body, it is necessary to make the median sagittal plane of the head of the patient coincide with the median sagittal plane in the CT image. If the head of the patient shakes greatly in the shooting process, the shot image is unclear. Therefore, the jaw support is arranged in the oral CT to limit the face, so that the head of a patient can be well positioned.

At present, most of the jaw supports with three different heights can be arranged due to different requirements on the heights of shooting positions, but the operation is complex when the jaw supports are switched.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect of complicated operation when different jaw brackets in the prior art are switched, so as to provide the manual rotary jaw bracket for oral CT.

In order to solve the technical problems, the manual rotary jaw support for oral CT provided by the invention comprises:

the jaw support body is provided with a supporting surface for supporting a human body;

the upper end of the rotating shaft is connected with the jaw support body;

the jaw bracket is sleeved on the rotating shaft and is rotationally connected with the rotating shaft; the jaw bracket is suitable for being fixedly connected with CT equipment;

a locking structure disposed between the rotational shaft and the jaw bracket; the locking structure is adapted to lock the rotation axis and the jaw mount in different positions along an axial direction of the rotation axis.

Preferably, the locking structure includes:

the first limiting piece is arranged on the jaw bracket; the first limiting piece is provided with an adjusting state of retracting into the jaw bracket and a fixing state of extending out of the jaw bracket;

the fixed position is arranged on the outer wall of the rotating shaft; the fixed position is matched with the first limiting piece to lock the rotating shaft and the jaw bracket.

As a preferable scheme, the fixing position is the top of the limit groove; the limiting groove is arranged in an extending mode along the axial direction of the rotating shaft; the first limiting piece is abutted with the top of the limiting groove.

As a preferable scheme, the limit groove is provided with at least two limit grooves with different heights which are arranged at intervals; the limiting groove is arranged at the beginning of one end of the rotating shaft, which is far away from the jaw support body.

As a preferable scheme, the limit grooves are three; the three limit grooves are uniformly distributed along the circumferential direction of the rotating shaft.

Preferably, the rotating shaft is rotatably connected with the jaw support body through a connecting structure.

Preferably, the connecting structure includes:

one end of the connecting piece is fixedly connected with the jaw support body, and the other end of the connecting piece is rotatably connected with the rotating shaft;

the limiting mechanism is arranged between the connecting piece and the rotating shaft; the limiting mechanism is suitable for fixing the connecting piece and the rotating shaft.

As a preferred solution, the limiting mechanism includes:

the fixed hole is formed in the end face, close to the jaw support body, of the rotating shaft; the fixed holes are arranged corresponding to the limit grooves;

the second limiting piece is arranged on the connecting piece and corresponds to the fixing hole; the second limiting piece is provided with an adjusting state of retracting into the connecting piece and a fixing state of extending towards the fixing hole.

As a preferable scheme, the rotating shaft is of a hollow structure and is internally provided with a flange bearing; the flange bearing is rotationally connected with the screw, and the other end of the screw is fixedly connected with the connecting piece.

As an optimal scheme, the first limiting piece and the second limiting piece are spring plungers.

The technical scheme of the invention has the following advantages:

1. the invention provides a manual rotary jaw support for oral CT, which comprises: the upper end is connected with a rotating shaft of the jaw support body, a jaw bracket and a locking structure; the rotating shaft and the jaw bracket are locked at different positions through the locking structure, so that the jaw support body at the upper end of the rotating shaft has different heights, the jaw support is not required to be replaced, the support of the jaw support body at different heights can be realized, the operation is simple, the number of jaw supports can be reduced, and the cost is saved.

2. The invention provides a manual rotary jaw support for oral CT, which comprises the following locking structures: the first limiting piece and the fixed position; the first limiting piece is a spring plunger; the fixed position is formed by the top of the limit groove; the spring plunger enters into the limit grooves with different heights by rotating the rotating shaft, is abutted with the tops of the limit grooves, and is fixed at different heights, so that the height of the jaw support body is adjusted, the whole process is simple to operate, and the height can be adjusted by rotating; meanwhile, the device has simple structure, small volume and strong reliability.

3. According to the manual rotary jaw support for oral CT provided by the invention, the rotating shaft is rotatably connected with the jaw support body through the connecting structure; the direction of the jaw support body can not be changed after the rotating shaft is changed, so that the subsequent examination is convenient.

4. The manual rotating jaw support for oral cavity CT provided by the invention is characterized in that the second limiting part is a spring plunger; under the condition of no stress, the ball head of the spring plunger is sprung into the fixing hole to be abutted, so that the rotating shaft is fixed with the jaw support body; when the adjustment is needed, the rotating shaft is rotated, the ball head of the spring plunger is subjected to a rotating moment, and the ball head of the spring plunger is retracted, so that the rotating shaft and the jaw support body can rotate; after rotation, the ball head of the spring plunger enters the next fixing hole, so that the rotation shaft and the jaw support body are fixed; the adjustment mode is simple and quick.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a jaw support according to the present invention.

Fig. 2 is a schematic view of the jaw rest of the present invention with the jaw bracket omitted.

Fig. 3 is a top view of the jaw rest of the invention.

Fig. 4 is a cross-sectional view taken along A-A in fig. 3.

Fig. 5 is a schematic perspective view of a rotating shaft of the jaw support of the present invention.

Fig. 6 is a schematic structural view of the jaw support body and the connecting piece according to the present invention.

Reference numerals illustrate:

1. a jaw support body; 2. a rotating shaft; 3. a jaw bracket; 4. a jaw support body support; 5. jaw support pad; 6. a limit groove; 7. a first limiting member; 8. a flange bearing; 9. a step screw; 10. a connecting piece; 11. a connecting bolt; 12. a fixing hole; 13. a second limiting piece; 14. and (3) a threaded hole.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

The manual rotatory jaw support of oral cavity CT that this embodiment provided, as shown in fig. 1, includes: the jaw support body 1 is provided with a supporting surface for supporting a human body; a rotating shaft 2 is fixedly connected to the lower end of the jaw support body, and the rotating shaft 2 is rotationally connected with the jaw bracket 3; the jaw holder 3 is fixed to a CT apparatus. Through rotating the axis of rotation 2, realize the adjustment of the distance between jaw support body 1 and the jaw bracket 3 on the axis of rotation 2, the adjustment of the height of jaw support body promptly for do not need to change the jaw support, can satisfy the demand of shooting in-process different height, simplify the operation flow.

As shown in fig. 2, at least two fixing positions are provided on the rotation shaft 2, different fixing positions being provided at different heights along the axial direction of the rotation shaft 2; a first limiting element 7 is arranged on the jaw support 3, said first limiting element 7 having an adjusted state of retraction into the jaw support 3 and a fixed state of extension out of the jaw support 3 and of a fixed fit, i.e. in the fixed state the rotation axis 2 and the jaw support 3 are in a locked state.

Further, a limiting groove 6 is arranged in the axial direction of the rotating shaft 2, a fixed position is formed at the top of the limiting groove 6, namely, the first limiting piece 7 is abutted with the top of the limiting groove 6, and locking of the rotating shaft 2 and the jaw bracket 3 is achieved.

In the scheme, three limit grooves 6 are formed in the outer wall of the rotating shaft 2, and each limit groove 6 is started from one end of the rotating shaft 2 far away from the jaw support body and extends towards the jaw support body; the lengths of the three limit grooves 6 are different, namely the heights of the tops of the limit grooves 6 are different, and the fixing of the different heights of the rotating shaft 2 and the jaw bracket 3 can be realized by rotating the rotating shaft 2 to enable the first limit piece 7 to be in contact with the tops of the different limit grooves 6. The three limit grooves 6 are uniformly distributed along the circumferential direction of the rotating shaft 2, namely, are uniformly distributed along 120 degrees along the circumferential direction of the rotating shaft 2.

As an alternative embodiment, the outer wall of the rotating shaft 2 may be provided with more than two limiting grooves 6, and the limiting grooves 6 are respectively provided with different lengths, so that the adjustment of various heights of the jaw support body can be realized.

The limit groove 6 may be a semicircular groove or a V-shaped groove.

The first limiting piece 7 is a spring plunger; when the rotating shaft 2 is rotated, the ball head of the spring plunger retracts inside under the extrusion of the outer wall of the rotating shaft 2, so that the rotating shaft 2 and the jaw bracket 3 are rotated, namely in an adjusting state; when the position of the spring plunger is correspondingly set with the limit groove 6, the ball head of the spring plunger stretches out towards the limit groove 6 under the drive of the spring and is abutted with the top of the limit groove 6, so that the rotation shaft 2 and the jaw bracket 3 are fixed.

The jaw support body comprises a jaw support body support 4 and a jaw support pad 5, wherein a support surface for supporting a human body is formed on the upper surface of the jaw support pad 5, and the jaw support pad 5 is arranged in a special shape for realizing more comfortable support on the human body.

In the above height adjusting process, the rotation shaft 2 drives the jaw support body to rotate, that is, the jaw support body and the CT apparatus rotate, so that the direction of the jaw support body is not beneficial to support.

Specifically, as shown in fig. 3 and 4, the rotating shaft 2 has a hollow structure inside. An annular flange extending towards the center of the cavity is arranged on one side, close to the jaw support body, inside the cavity, a flange bearing 8 is arranged on the annular flange, a step screw 9 is connected in a rotating manner in the flange bearing 8, the protruding end of the step screw 9 is abutted to the bottom of the annular flange, and the other end of the step screw 9 is fixedly connected with a connecting piece 10; one end face of the connecting piece 10 is in contact connection with the end face of the rotating shaft 2, and the other end of the connecting piece is fixedly connected with the jaw support body support 4.

As shown in fig. 5 and 6, a threaded hole 14 is formed in the upper end surface of the connecting piece 10, and the rotating seat is fixedly connected with the jaw support body support 4 through a connecting bolt 11; a mounting hole is formed in the lower end face of the rotating seat, and a second limiting piece 13 is arranged in the mounting hole; the upper end face of the rotating shaft 2 is provided with fixing holes 12, the setting positions of the fixing holes 12 are correspondingly arranged with the positions of the limiting grooves 6, in the scheme, the number of the fixing holes 12 is three, and the fixing holes are evenly distributed at 120 degrees; meanwhile, the mounting hole is also disposed corresponding to the fixing hole 12, and the second limiting member 13 has an adjustment state of being retracted into the connecting member 10 and also has a fixing state of being extended toward the fixing hole 12.

The second limiting piece 13 is also a spring plunger, and the jaw support body and the rotating shaft 2 are fixed by rotating the jaw support body and the rotating shaft 2, so that a ball head of the spring plunger is sprung into the fixing hole 12; the jaw support body is turned forcefully, the ball head of the spring plunger is compressed and retracted into the jaw support body, so that the jaw support body and the rotating shaft 2 rotate and enter different fixing holes 12 to reach different positions.

Application method and principle

By rotating the rotating shaft 2, the first limiting piece 7 moves into the limiting groove 6 with different heights, the first limiting piece 7 is in butt joint with the top of the limiting groove 6, and the positions of the jaw bracket 3 and the rotating shaft 2 with different heights are fixed, so that the height of the jaw bracket body is adjusted;

after the height of the jaw support body is adjusted to a proper position, the jaw support body is rotated, the second limiting piece 13 moves into different fixing holes 12, and the direction of the jaw support body can be adjusted, so that the jaw support body is in a proper direction in the process of supporting a human body.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims

1. A manual rotary jaw support for oral CT comprising:

a jaw support body (1) having a support surface for supporting a human body;

the upper end of the rotating shaft (2) is connected with the jaw support body;

the jaw bracket (3) is sleeved on the rotating shaft (2) and is rotationally connected with the rotating shaft (2); the jaw bracket (3) is suitable for being fixedly connected with CT equipment;

a locking structure arranged between the rotation shaft (2) and the jaw bracket (3); the locking structure is adapted to lock the rotation axis (2) and the jaw mount (3) in different positions along the axial direction of the rotation axis (2);

the locking structure includes:

a first limiting piece (7) arranged on the jaw bracket; the first limiting piece is provided with a fixed end extending towards the rotating shaft;

the fixed position is arranged on the outer wall of the rotating shaft (2); the fixed position is matched with the first limiting piece (7) to lock the rotating shaft (2) and the jaw bracket (3);

the fixed position is the top of the limit groove (6); the limiting groove (6) is arranged in an extending mode along the axial direction of the rotating shaft (2); the first limiting piece (7) is abutted with the top of the limiting groove (6);

the first limiting piece is fixedly arranged on the jaw bracket; the limiting groove (6) is provided with at least two limiting grooves with different heights which are arranged at intervals; the limiting groove (6) is arranged at the beginning of one end of the rotating shaft (2) far away from the jaw support body.

2. The manual rotary jaw rest for oral CT according to claim 1, characterized in that said limit grooves (6) have three; three limit grooves (6) are used for uniformly forming HA202106023 along the circumferential direction of the rotating shaft (2)

Distribution.

3. The manual rotary jaw rest for oral CT according to claim 2, wherein the rotation shaft (2) is rotatably connected to the jaw rest body by a connection structure.

4. A manual rotation jaw rest for oral CT according to claim 3, wherein the connecting structure comprises:

one end of the connecting piece (10) is fixedly connected with the jaw support body (1), and the other end of the connecting piece is rotatably connected with the rotating shaft (2);

the limiting mechanism is arranged between the connecting piece (10) and the rotating shaft (2); the limiting mechanism is suitable for fixing the connecting piece (10) and the rotating shaft (2).

5. The manual rotary jaw rest for oral CT of claim 4, wherein the limit mechanism comprises:

a fixing hole (12) which is arranged on the end surface of the rotating shaft (2) close to the jaw support body; the fixing holes (12) are arranged corresponding to the limit grooves (6);

the second limiting piece (13) is arranged on the connecting piece (10) and corresponds to the fixing hole (12); the second limiting member (13) has an adjustment state of being retracted into the connecting member (10) and also has a fixing state of being extended toward the fixing hole (12).

6. The manual rotary jaw support for oral CT as claimed in claim 4, wherein said rotation shaft (2) has a hollow structure and is internally provided with a flange bearing (8); the flange bearing (8) is rotationally connected with a screw, and the other end of the screw is fixedly connected with the connecting piece (10).

7. Manual rotation jaw rest for oral CT according to claim 5, characterized in that the second stop (13) is a spring plunger.