CN102078193A

Movatterモバイル変換

Info

Publication number: CN102078193A
Application number: CN2011100021907A
Authority: CN
Inventors: 胡卫东; 项立; 范义; 鄂占森; 高永波
Original assignee: SHENZHEN LONGGANG CENTRAL HOSPITAL
Current assignee: SHENZHEN LONGGANG CENTRAL HOSPITAL
Priority date: 2011-01-05
Filing date: 2011-01-05
Publication date: 2011-06-01

Abstract

The invention discloses a mouth opening device for MR (magnetic resonance) scanning of the mandible joint. The device is characterized by comprising a nonmetal clamp body, wherein the grip of the nonmetal clamp body is provided with two symmetric nonmetal support pads; and a nonmetal locking mechanism capable of locking the open degree between the two nonmetal support pads of the grip is arranged between two handles of the nonmetal clamp body. The mouth opening device is of a simple structure and easy to operate, can conveniently arrange the two support pads of the grip of the nonmetal clamp body in the mouth cavity of a patient, compels the patient to open the mouth cavity to a proper open degree by use of the nonmetal clamp body, locks the open state of the nonmetal clamp body by use of the nonmetal locking mechanism until the MR scanning is over, and can effectively prevent possible mobile artifact caused by unstable opening of the mouth cavity of the patient during the MR scanning. By adopting the mouth opening device, the MR scanning of the mandible joint can be normally and smoothly conducted, the formed MR image is clear and the offered information is accurate. The mouth opening device has a good application and popularization prospect.

Description

A kind of mandibular joint MR scanning shedding motion

Technical field

What the present invention relates to is medical apparatus and instruments, especially a kind of mandibular joint MR scanning shedding motion that is applicable to the MR scanning operation.

Background technology

The mandibular joint disease is between twenty and fifty comparatively common disease, its closed mouth position plain film is comparatively common image check method, along with developing rapidly of medical imaging, MR scanning has become a kind of main imaging examination means, it can observe pathological changes situations such as meniscus, tuberosity be prominent, and clinical diagnosis is had crucial meaning.

Conventional mandibular joint MR scanography comprises mouth-open and closed mouth position, scans the motion conditions that can observe meniscus by MR.But because MR is long sweep time, the patient keeps the time of the state of dehiscing to be difficult to satisfy MR scanning required time automatically.For impelling the patient to keep the state of dehiscing for a long time, can adopt the supporter as the oral cavity such as foam-rubber cushion, stopper usually, force the patient oral cavity to keep opening shape.But in actual use, find the size of supporter or the individual variation etc. of difference and patient oral cavity opening degree in shape, can influence the accuracy of MR scanning, can't satisfy the requirement of diagnostician mandibular joint MR scanography.

Summary of the invention

Technical problem to be solved by this invention is to remedy above-mentioned the deficiencies in the prior art, provides a kind of and can regulate patient oral cavity open degree arbitrarily, and can force the patient to keep the oral cavity open degree, and the mandibular joint MR of being convenient to operate scanning shedding motion.

The present invention solves by the following technical programs.

The characteristics of this mandibular joint MR scanning shedding motion are:

Comprise a nonmetal caliper body;

The folder mouth of described nonmetal caliper body is provided with two symmetric nonmetal supporting pads;

Be provided with the nonmetal locking mechanism of the open degree of lockable folder mouthful two nonmetal supporting pads between two handles of described nonmetal caliper body.

Technical problem of the present invention is further solved by the following technical programs.

Be provided with the polymer bevel protractor of the open degree that can show folder mouthful two nonmetal supporting pads between described nonmetal caliper body two handles.

Described nonmetal caliper body is made of the left caliper and the right caliper body of cross-articulation.The folder mouth of the nonmetal caliper body of this cross-articulation structure can be opened with the unlatching of handle.

The nonmetal locking mechanism of the nonmetal caliper body of described cross-articulation structure can constitute by intermeshing polymer ratchet bar by being separately positioned on nonmetal caliper body two handle ends.The open degree of the nonmetal caliper body folder of intermeshing ratchet bar lockable mouthful two nonmetal supporting pads.

Described nonmetal caliper body is made of parallel hinged relatively left caliper and right caliper body, when the folder mouth of left caliper and right caliper body closes up, and the handle of left caliper and right caliper body fork.The folder of this parallel hinged nonmetal caliper body mouthful can close up with the handle of fork and opens.

The nonmetal locking mechanism of described parallel hinged relatively nonmetal caliper body constitutes by being fixed on the polymer ratchet bar on the leader and being arranged on the tooth button that can snap in the polymer ratchet bar on another handle.

Be provided with the folder mouthful elasticity card that resets that can impel nonmetal caliper body between described two handles, the two ends of elasticity card are stuck in respectively between central shaft below left caliper and right caliper body.

The present invention's beneficial effect compared with prior art is:

This mandibular joint MR scanning shedding motion is simple in structure, processing ease, it can conveniently place nonmetal caliper body folder mouthful two supporting pads in the patient oral cavity, and utilize easy to operate nonmetal caliper body to force the patient that the oral cavity is flared to suitable open degree, utilization is arranged on the polymer bevel protractor between nonmetal caliper body two handles, the open degree in oral cavity directly perceived, utilize nonmetal locking mechanism that the opening of nonmetal caliper body is locked until the MR end of scan again, the patient opens in the oral cavity the pseudo-shadow of the unstable mobility that may cause in the time of can effectively preventing MR scanning.Utilize this shedding motion can make mandibular joint MR scan normally, carry out smoothly, formed MR clear picture, the information that provides is accurate.Has good application and promotion prospect.

The concrete structure of mandibular joint MR scanning shedding motion of the present invention is provided in detail by the following drawings and embodiment.

Description of drawings

Fig. 1 isembodiment 1 structural representation of mandibular joint MR scanning shedding motion;

Fig. 2 isembodiment 2 structural representations of mandibular joint MR scanning shedding motion.

The specific embodiment

Embodiment 1: can be clear that from Fig. 1 mandibular joint MR scanning shedding motion has anonmetal caliper body 1, thefolder mouth 11 ofnonmetal caliper body 1 is provided with two symmetricnonmetal supporting pads 2,12 of two handles ofnonmetal caliper body 1 are provided with thenonmetal locking mechanism 3 of the open degree of lockable folder mouthful 11 liang ofnonmetal supporting pads 2, and 12 of 1 liang of handles of nonmetal caliper body are provided with thepolymer bevel protractor 4 of the open degree that can showfolder mouthful 11 liang of nonmetal supportingpads 2.

Describednonmetal caliper body 1 is made ofleft caliper 14 and theright caliper body 15 bycentral shaft 13 cross-articulation.

Describednonmetal locking mechanism 3 can be made of by intermeshing

polymer ratchet bar

31,32left caliper 14 that is separately positioned onnonmetal caliper body 1 and 12 of 15 liang of handles of right caliper body.The open degree of thenonmetal caliper body 1folder mouthful 11 liang of nonmetal supportingpads 2 of the engagement lockable of

polymer ratchet bar

31,32.

Be the convenient open degree of graspingnonmetal caliper body 1folder mouthful 11 liang ofnonmetal supporting pads 2, be provided with thepolymer bevel protractor 4 of the open degree that can show folder mouthful two nonmetal supporting pads between nonmetal caliper body two handles.

Embodiment 2: the basic structure that can be clear that mandibular joint MR scanning shedding motion from accompanyingdrawing 2 is identical withembodiment 1, comprise: anonmetal caliper body 1, thefolder mouth 11 ofnonmetal caliper body 1 is provided with two symmetricnonmetal supporting pads 2,12 of two handles ofnonmetal caliper body 1 are provided with thenonmetal locking mechanism 3 of the open degree oflockable folder mouthful 11 liang ofnonmetal supporting pads 2, and 12 of 1 liang of handles of nonmetal caliper body are provided with thepolymer bevel protractor 4 of the open degree that can show folder mouthful 11 liang of nonmetal supporting pads 2.Difference is:

Describednonmetal caliper body 1 is by constituting bycentral shaft 13 parallel hinged relativelyleft calipers 14 andright caliper body 15, when thefolder mouth 11 ofleft caliper 14 andright caliper body 15 closes up, two handles 12 fork ofleft caliper 14 andright caliper body 15, the folder of this parallel hingednonmetal caliper body 1mouthfuls 11 can close up and opens with two handles of diverging 12.

Describednonmetal locking mechanism 3 constitutes by being fixed on thepolymer ratchet bar 31 on the leader and being arranged on the tooth button (not shown) that can snap inpolymer ratchet bar 31 on another handle.

12 of described two handles can impel the folder mouthful 11elasticity cards 5 that reset of nonmetal caliper body 1.The two ends ofelasticity card 5 are stuck in 15 ofcentral shaft 13 belowleft calipers 14 and right caliper bodies respectively.

Claims

1. a mandibular joint MR scans shedding motion, it is characterized in that:

Comprise a nonmetal caliper body;

2. according to the described mandibular joint MR scanning of claim 1 shedding motion, it is characterized in that:

3. according to claim 1 or 2 described mandibular joint MR scanning shedding motions, it is characterized in that:

Described nonmetal caliper body is made of the left caliper and the right caliper body of cross-articulation.

4. according to the described mandibular joint MR scanning of claim 3 shedding motion, it is characterized in that:

The nonmetal locking mechanism of the nonmetal caliper body of described cross-articulation structure can constitute by intermeshing polymer ratchet bar by being separately positioned on nonmetal caliper body two handle ends.

5. according to claim 1 or 2 described mandibular joint MR scanning shedding motions, it is characterized in that:

Described nonmetal caliper body is made of parallel hinged relatively left caliper and right caliper body, when the folder mouth of left caliper and right caliper body closes up, and the handle of left caliper and right caliper body fork.

6. according to the described mandibular joint MR scanning of claim 5 shedding motion, it is characterized in that:

Described nonmetal locking mechanism constitutes by being fixed on the polymer ratchet bar on the leader and being arranged on the tooth button that can snap in the polymer ratchet bar on another handle.

7. according to the described mandibular joint MR scanning of claim 6 shedding motion, it is characterized in that:

Be provided with the folder mouthful elasticity card that resets that can impel nonmetal caliper body between two handles of described fork, the two ends of elasticity card are stuck in respectively between central shaft below left caliper and right caliper body.