CN102119859A

CN102119859A - Vertebral body interval measurer

Info

Publication number: CN102119859A
Application number: CN 201110074324
Authority: CN
Inventors: 刘祖德; 钟贵彬
Original assignee: Renji Hospital Shanghai Jiaotong University School of Medicine
Current assignee: Renji Hospital Shanghai Jiaotong University School of Medicine
Priority date: 2011-03-25
Filing date: 2011-03-25
Publication date: 2011-07-13
Anticipated expiration: 2031-03-25
Also published as: CN102119859B

Abstract

The invention relates to a vertebral body interval measurer belonging to the technical field of medical equipment and comprises left and right arms (1), an arc scaleplate (2), a rotating shaft (3) and a spring (4). The left arm and the right arm are both divided into two parts, namely front arms (11) and rear arms (12). The bent parts of the left arm and the right arm are respectively provided with a rotating shaft hole, the rotating shaft (3) penetrates through the rotating shaft hole to connect the left arm and the right arm, the tops of the front arms of the left arm and the right arm are provided with contact points (13), and the tail ends of the rear arms of the left arm and the right arm are respectively provided with a scaleplate hole. One scaleplate hole is used for fixing one end of the arc scaleplate (2), and the other scaleplate hole is used for being penetrated by the free end of the arc scaleplate. The spring is bent in a U shape, the middle part of the spring is fixed to the rotating shaft (3), and the two ends of the spring are respectively fixed in grooves (14) in the inner sides of the rear arms of the left arm and the right arm. The vertebral body interval measurer can rapidly and accurately measure the vertebral body interval and successfully cut titanium nets at one time, thereby saving material, accelerating operations, improving the operation quality, and also reducing the pain of patients.

Description

A kind of vertebral body distance measurement device

Technical field

The present invention relates to technical field of medical instruments, is a kind of inferior vertebral body distance measurement device of cutting distance between two adjacent vertebral bodys of back entirely that is used for measuring when cervical vertebral body is performed the operation.

Background technology

Cervical spondylosis is a kind of comparatively common vertebra degenerative disease, usually causes limbs disturbance because of the spinal nerves pressurized.Operation method relatively commonly used at present is that cervical vertebral body is cut+titanium net bone grafting internal fixation with steel plate entirely, that is after vertebral body time cuts entirely, measures distance between adjacent two vertebral bodys earlier, and the titanium net of re-shearing respective length is implanted between vertebral body.The measurement for distance between vertebral body does not at present have special equipment, uses visual method usually, or directly measure with the titanium net, and also useful soft alloy bar even measure with fine rule is to determine the required length of implanting titanium net between vertebral body.But the result that these methods are measured is often inaccurate, the titanium net of cutting is either large or small undesirable, usually need repeatedly cutting, not only cause waste, prolonged operating time, and sometimes also because implant long titanium net reluctantly, the soleplate regression, the hypertrophy that cause hypocentrum, or implant too short titanium net reluctantly, cause between vertebral body and subside that ligamenta flava forms gauffer or repress is compeled spinal nerves.

Summary of the invention

The purpose of this invention is to provide a kind of simple in structure, easy to use, the vertebral body distance measurement device that can quick and precisely measure distance between vertebral body.

The present invention by about two arms, arc scale, rotating shaft and spring form, about two arms divide forearm and postbrachium two parts, between forearm and the postbrachium at an angle, about the corner of two arms respectively be provided with a shaft hole, rotating shaft pass this shaft hole with about two arms link to each other, about two arms be that fulcrum can rotate with the rotating shaft, the forearm of two arms or be and close up shape or be forked about making; About two arms the forearm top respectively to the left and right both sides convex to form the measurement contact point, about the postbrachium tail end of two arms be respectively equipped with a staff guage hole, the cross section coupling of the shape of staff guage hole and size and arc scale, one of them staff guage hole is used for fixing an end of arc scale, another staff guage hole is used to pass through the free-end of arc scale, so that the arc scale slidably reciprocates and indicates reading on the arc scale, about survey correspondence position in the postbrachium of two arms and respectively be provided with a groove, the spring bending that takes the shape of the letter U, center fixed is in rotating shaft, the groove of surveying in the postbrachium of two arms about two ends are individually fixed in.Under normal conditions, by the elastic force of spring with about two postbrachiums outwards strut, about two forearms of two arms then close up, two arms of the present invention just are " Y " shape, reading on the arc scale is 0, when two postbrachiums being come closer with finger, the free-end of arc scale slides in the staff guage hole of a rear flank arm, the reading that shows on the arc scale is just represented the distance between the vertical measurement contact point of left and right sides forearm, if two contact points touch is the terminal plate of vertebral body up and down that vertebral body time cuts adjacent two vertebral bodys in operation back entirely, and what record so is exactly two interpyramidal distances.Therefore, can measure distance between vertebral body easily by means of the present invention.During use, measure inferior adjacent two the interpyramidal distances in operation back of cutting entirely of vertebral body earlier with the present invention, the titanium net of re-shearing respective length is implanted between vertebral body routinely and is got final product.

The present invention is simple in structure, and is easy to use, and distance quick and precisely makes and cuts out the once success of titanium net between the measurement vertebral body, has not only saved material, has accelerated the operation progress, and has improved the operation quality, has reduced patient suffering and financial burden.

Description of drawings

Fig. 1 is a normality structural representation of the present invention

Fig. 2 for the present invention measure between vertebral body apart from the time structural representation

The specific embodiment

Now in conjunction with the accompanying drawings and embodiments, the present invention is described in detail.

The present invention by about two arms 1, arc scale 2, rotating shaft 3 and spring 4 form, about two arms divide forearm 11 and postbrachium 12 two parts, between forearm and the postbrachium at an angle, about the corner of two arms respectively be provided with a shaft hole, rotating shaft pass this shaft hole with about two arms link to each other, about two arms be that fulcrum can rotate with the rotating shaft, the forearm of two arms or be and close up shape or be forked about making; About two arms the forearm top respectively to the left and right both sides convex to form and measure contact point 13, about the postbrachium tail end of two arms be respectively equipped with a staff guage hole, the cross section coupling of the shape of staff guage hole and size and arc scale 2, one of them staff guage hole is used for fixing an end of arc scale, another staff guage hole is used to pass through the free-end of arc scale, so that the arc scale slidably reciprocates and indicates reading on the arc scale, about survey correspondence position in the postbrachium of two arms and respectively be provided with a groove 14, the spring bending that takes the shape of the letter U, center fixed is in rotating shaft 3, the groove of surveying in the postbrachium of two arms about two ends are individually fixed in 14.Under the normality, by the elastic force of spring 4 with about two postbrachiums 12 outwards strut, about two forearms of two arms close up, of the present invention about two arms just be " Y " shape (see figure 1), the reading of indication is 0 on the arc scale 2; When apply with finger certain pressure with about two postbrachiums 12 of two arms when coming closer, drive two forearm bifurcateds, the free-end of arc scale 2 stretches out from the staff guage hole of a rear flank arm tail end, the reading that shows on the arc scale 2 is the distance between the vertical measurement contact point 13 of two forearms of two arms about expression just, if two contact points touch is that vertebral body time cuts the postoperative soleplate (see figure 2) that goes up hypocentrum 5 entirely, and what record so is two interpyramidal distances.

1. 1 kinds of vertebral body distance measurements of embodiment device

The present invention adopts stainless steel material to make, forearm 11 long 11.5cm, and wide 1cm, thick 0.3cm, postbrachium 12 long 9cm, wide 1cm, thick 0.3cm, the angle between forearm and postbrachium is 140 degree; Arc scale 2 wide 1cm, thick 0.1mm, the scale on the scale are 0～7mm, and rotating shaft 3 is made up of screw and nut, and wherein the nut diameter is 1.0cm, screw diameter 0.6cm. spring 4 diameter 0.1cm, long 3cm.

The present invention can make different specifications and models as required.

Claims

1. vertebral body distance measurement device, it is characterized in that by about two arms (1), arc scale (2), rotating shaft (3) and spring (4) are formed, about two arms divide forearm (11) and postbrachium (12) two parts, between forearm and the postbrachium at an angle, about the corner of two arms respectively be provided with a shaft hole, rotating shaft (3) pass this shaft hole with about two arms link to each other, about two arms the forearm top respectively to the left and right both sides convex to form and measure contact point (13), about the postbrachium tail end of two arms be respectively equipped with a staff guage hole, the cross section coupling of the shape of staff guage hole and size and arc scale (2), one of them staff guage hole is used for fixing an end of arc scale, another staff guage hole is used to pass through the free-end of arc scale, so that the arc scale slidably reciprocates and indicates reading on the arc scale, about the interior survey correspondence position of postbrachium (12) of two arms respectively be provided with a groove (14), spring (4) bending that takes the shape of the letter U, be fixed in rotating shaft (3) in the middle of it, survey groove (14) about two ends are individually fixed in the postbrachium of two arms.