CN2497718Y

CN2497718Y - Medical angle gauge

Info

Publication number: CN2497718Y
Application number: CN 01252224
Authority: CN
Inventors: 黄万新; 程富礼; 宋相建; 王顺利; 陈留如
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-23
Filing date: 2001-10-23
Publication date: 2002-07-03
Anticipated expiration: 2011-10-23

Abstract

The utility model relates to a medical caliper type angle measuring ruler, which is characterized in that: the utility model includes a caliper type measuring frame (1) and an angle gauge (2) which is parallel and combined with a bottom board (4) of the measuring frame; the central position of the angle gauge (2) is provided with a scale pointer (3) in the method of hinge connection; and the bottom board (4) of the caliper type measuring frame is composed of at least two extension tubes. The utility model has the advantages of precise and simple measurement of the twist degree, so as to ensure the accurate correction of the twist degree of the bone to the normal value during the operation and restore the normal physiological functions of the patients.

Description

Medical cassette angle square

(1) technical field:

This utility model relates to a kind of medical apparatus and instruments, relates to a kind of medical cassette angle square specifically.

(2) background technology:

In general normal person's skeleton two ends relatively all exist physiological to reverse; it is the basis that guarantees the motor system normal activity; if because certain paathogenic factor causes windup-degree not normal; then deformity and functional disorder can appear; for example during congenital dislocation of hip joint when neck of femur torsion angle increase, near end of thighbone prosthetic replacement prosthese lay angle etc.; need in operation, to recover normal value, the basis of normal activity just can be provided.At present in the clinical operation process during correction by osteotomy because have the backbone to be separated by between the skeleton two ends, and torsion angle is the key relatively axis rotations in skeleton two ends, torsion angle measures that main to rely on range estimation fixed, error is bigger.Neck of femur torsion angle increase is example (the neck of femur torsion angle also claims top rake) during with congenital dislocation of hip joint, it is an angle forward that forms between neck of femur axis and the condyle of femur axis, the normal value of top rake is 15 degree, existing antidote is that osteotomy surface is assumed to be circumference, through range estimation it is divided into some five equilibriums, determine the number of degrees of every five equilibrium, correct then.As the braking of osteotomy near-end, it can correct the top rake that increases (reducing by 60 degree) to external rotation 1/6 far-end relatively.Above-mentioned this method needs labelling (adopting osteotome indentation on skeleton) before osteotomy, but it is, whether excessive or not enough behind the correction by osteotomy in operation very easily with the labelling damage, and because the division of circumference relies on range estimation, can not check again, measure and correct that subjectivity is big, accuracy rate is low.

(3) summary of the invention:

The purpose of this utility model provides a kind of mensuration twist that can be accurate, easy at above-mentioned weak point of the prior art just, thereby guarantees accurately the skeleton twist to be corrected in the operation the medical cassette angle square of normal value, recovery patient normal physiological function.

The purpose of this utility model can adopt following measure to realize:

The protractor that medical cassette angle square of the present utility model comprises the cassette measurement bay, parallels and combine with it with the measurement bay boundary frame area; The center position of described protractor is provided with a scale pointer by hinged mode; The boundary frame area of described cassette measurement bay is made up of at least two joint telescoping tubes.

Cassette measurement bay described in this utility model is an open front formula rectangular card frame, is made up of three joint telescoping tubes with the corresponding boundary frame area of opening edge; Described protractor combines with the boundary frame area trocar sheath of affixed mode and cassette measurement bay, and is positioned at same plane with the cassette measurement bay.

Cassette angle square of the present utility model can rotate at spatial diverse location with measured object, tuning drive gear on the protractor then remains vertically downward under the effect of gravity, thereby can obtain the angle between measured object and horizontal line (or vertical line) or the relative angle of measured object easily.Moreover because the boundary frame area of cassette measurement bay (moving bar) is made up of multiple-segment telescopic tube, this just makes the cassette measurement bay to adjust flexibly at any time according to the size (length) of measured object.With the anteversion of femoral neck rectification is example: neck of femur and condyle of femur all expose in the operation, keep limbs to fix, draw a reading after measuring the condyle of femur axis, measure the neck of femur axis again and draw a reading, this process intermediate champing angle square rotates forward, tuning drive gear on the protractor then remains vertically downward, and the difference of two readings is exactly the reading of top rake.Because concrete numerical value is that the throughput hornwork is measured, its degree of accuracy height, and after osteotomy, still can use the same method and measure check, in case overcorrection or deficiency.In addition,, be fit to somatometry in the operation because this utility model is to be made by pasteurization material before being suitable for art, and have simple and practical, measure accurate advantage.

(4) description of drawings:

Fig. 1 is a front view of the present utility model.

Fig. 2 is this utility model maximum open working state figure.

(5) specific embodiment:

This utility model is done with detailed description below with reference to embodiment (accompanying drawing):

As shown in the figure, medical cassette angle square of the present utility model comprises open front formula rectangle cassette measurement bay 1 and the protractor 2 that combines with measurement bay boundary frame area 4; Form by three joint telescoping tubes with the corresponding boundary frame area 4 of cassette measurement bay 1 opening edge (moving bar); Described protractor 2 to be paralleling with cassette measurement bay boundary frame area 4 and to be installed in by affixed mode on the trocar sheath of boundary frame area 4 of cassette measurement bay 1 with version that cassette measurement bay 1 is positioned at same plane, is provided with a scale pointer 3 at the center position of protractor 2 by hinged mode.

Claims

1, a kind of medical cassette angle square is characterized in that: it comprises cassette measurement bay (1), the protractor (2) that parallels with measurement bay boundary frame area (4) and combine with it; The center position of described protractor (2) is provided with a scale pointer (3) by hinged mode; The boundary frame area (4) of described cassette measurement bay (1) is made up of at least two joint telescoping tubes.

2, medical cassette angle square according to claim 1 is characterized in that: described cassette measurement bay (1) is an open front formula rectangular card frame, is made up of three joint telescoping tubes with the corresponding boundary frame area of opening edge (4).

3, medical cassette angle square according to claim 1 is characterized in that: described protractor (2) combines with the trocar sheath of the boundary frame area (4) of affixed mode and cassette measurement bay (1), and is positioned at same plane with cassette measurement bay (1).