CN212326528U

CN212326528U - Movable cross square ruler

Info

Publication number: CN212326528U
Application number: CN202020749783.4U
Authority: CN
Inventors: 卢娜; 李广成; 张文勇; 刘健
Original assignee: Beijing Made Hope Tech Co Ltd; Beijing Made Hope Technology Co Ltd
Current assignee: Beijing Made Hope Tech Co Ltd; Beijing Made Hope Technology Co Ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2021-01-12
Anticipated expiration: 2030-05-09

Abstract

The utility model discloses a portable cross square ruler relates to medical instrument technical field. The movable cross square ruler comprises a pedestal, a knob is arranged on the upper end face of the pedestal, the pedestal is square, the cross ruler and the longitudinal ruler are located inside the pedestal and overlapped with each other, the knob is screwed in the pedestal through external threads, and the transverse ruler and the longitudinal ruler are fixed or moved through screwing or unscrewing the knob. Horizontal chi hole and vertical chi hole have been seted up to the pedestal inside, have inserted the horizontal chi in the horizontal chi hole, have inserted the vertical chi in the vertical chi hole, and the location head is installed to the initiating terminal of vertical chi, and the location head includes rectangular bodily form's main part and connects in the tip of main part one end, and the end of tip is the setpoint, and the setpoint is located same vertical line with the pedestal left edge. Pedestal lower limb and pedestal left edge mutually perpendicular, the pedestal lower limb is followed for the reading of vertical scale, and the pedestal left edge is followed for the reading of horizontal scale.

Description

Movable cross square ruler

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to portable cross square ruler.

Background

In neurosurgery, operations such as puncture and the like are often needed, and a probe and other equipment are needed to be accurately inserted into a specific target point in brain tissue from the outside of the cranium in the puncture process. Finding the projection point of the target point on the body surface of the head, and the doctor can find the specific target point through the projection point. The existing method for finding the projection point usually measures the projection point on the body surface of the head from the bony feature point of the human body or the artificially pasted mark point on the body surface according to the CT image. But a simple ruler or caliper and the like are inconvenient to use and have large deviation when the head body surface is measured.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the aforesaid is not enough, provides one kind and has adjusted conveniently, measures accurate portable cross square ruler.

The utility model discloses specifically adopt following technical scheme:

the utility model provides a portable cross square ruler, includes the pedestal, and the up end of pedestal is equipped with the knob, and inside horizontal chi hole and the vertical scale hole of having seted up has been inserted in the horizontal chi hole, has inserted the vertical scale in the vertical scale hole, and the location head is installed to the initiating terminal of vertical scale, and the pointed end of location head is the setpoint.

Preferably, the lower edge and the left edge of the pedestal are perpendicular to each other, the lower edge of the pedestal is a reading edge of the longitudinal ruler, and the left edge of the pedestal is a reading edge of the transverse ruler.

Preferably, the positioning head comprises a cuboid main body and a tip connected to one end of the main body, and the tail end of the tip is the positioning point.

Preferably, the positioning point is located on the same longitudinal line as the left edge of the pedestal.

Preferably, the transverse ruler hole is provided with a slot with the same width as the longitudinal ruler.

Preferably, the starting scale marks of the horizontal ruler and the longitudinal ruler are both 0, and the size of the longitudinal ruler shielded by the positioning head is equal to the distance from the lower edge of the horizontal ruler to the lower edge of the pedestal.

Preferably, the pedestal is square, and the cross-shaped parts of the transverse ruler and the longitudinal ruler, which are positioned in the pedestal, are overlapped; the knob is screwed into the pedestal through external threads, and the transverse ruler and the longitudinal ruler are fixed or released by screwing or unscrewing the knob.

The utility model discloses following beneficial effect has: in the surgery operation, according to the value of the horizontal ruler and the vertical ruler that set for, place the body surface point that the patient corresponds with the location head on, portable cross square is placed along CT scanning plane, and the horizontal ruler is close to the body surface, and then 0 position point of horizontal ruler is a body surface projection point of target spot, adopts this portable cross square can be rapidly, accurate find the projection point.

Drawings

FIG. 1 is a schematic structural view of a movable cross square;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an exploded view of FIG. 1;

FIG. 4 is a schematic view of the movable cross square in the storage state;

FIG. 5 is a schematic diagram showing the use of the movable cross square;

fig. 6 is a schematic diagram of the use principle of the movable cross square.

Wherein, 1 is the pedestal, 2 is the knob, 21 is the pedestal lower limb, 22 is the pedestal left edge, 3 is the horizontal ruler, 4 is the vertical ruler, 5 is the location head, 51 is the setpoint.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

with reference to fig. 1-4, the movable cross square ruler comprises a pedestal 1, the pedestal 1 is square, a knob 2 is arranged on the upper end face of the pedestal 1, the knob 2 is screwed into the pedestal 1 through external threads, a cross ruler hole and a longitudinal ruler hole are formed in the pedestal 1, a cross ruler 3 is inserted into the cross ruler hole, a longitudinal ruler 4 is inserted into the longitudinal ruler hole, the cross ruler 3 and the longitudinal ruler 4 are located inside the pedestal and are overlapped, and the overlapping refers to direct contact of two adjacent end faces of the cross ruler and the longitudinal ruler.

When the knob 2 is screwed, the knob can extrude the ruler surface which is directly contacted with the knob, and then the position fixation of the transverse ruler and the longitudinal ruler is realized.

When the knob 2 is unscrewed, the pressing applied to the surface of the ruler in direct contact with the knob is released, the fixing positions of the lateral ruler and the longitudinal ruler are released, and the measuring length of each ruler can be adjusted by pushing or pulling the lateral ruler and the longitudinal ruler.

In connection with fig. 2, the knob preferably presses against the front side of the longitudinal ruler.

The initial end of the longitudinal ruler 4 is provided with a positioning head 5, the positioning head 5 comprises a cuboid main body and a tip connected to one end of the main body, the tail end of the tip is provided with a positioning point 51, and the positioning point 51 and the left edge 22 of the pedestal are located on the same longitudinal line. The pedestal lower edge 21 and the pedestal left edge 22 are perpendicular to each other, the pedestal lower edge 21 is a reading edge of a longitudinal scale, and the pedestal left edge 22 is a reading edge of a transverse scale.

Offer the slot with the aequilate of longitudinal rod in the horizontal ruler hole, when the square ruler did not use, the knob was loosened soon, can be taken out the longitudinal rod from the longitudinal rod hole, then inserted the longitudinal rod in the slot, made horizontal ruler and longitudinal rod can coincide in length direction, the knob of screwing, can be with longitudinal rod and horizontal ruler rigidity, made the cross square ruler constitute a style of calligraphy, portable.

The initial scale mark of horizontal ruler and vertical ruler is 0, and the vertical ruler size that the location head sheltered from equals the distance of horizontal ruler lower limb to pedestal lower limb.

With reference to fig. 5 and 6, on the scanning surface of the CT image, mutually perpendicular line segments (usually, one X is a symmetrical central line of the left and right hemispheres in clinic) are made through the target point, the distance between the end point of the two line segments on the body surface and the intersection point is set, the values of the transverse ruler and the longitudinal ruler are set, then the positioning head is placed on the body surface point corresponding to the patient, the movable cross square ruler is placed along the scanning plane, the transverse ruler is close to the body surface, and then 0 of the transverse ruler is a body surface projection point of the target point.

It should be noted that, in this document, the relational terms such as the lower edge and the left edge are only relative directional schematic terms, and mainly show the positional relationship when the square is set as in fig. 1, and do not represent a schematic of the position when the position of the square is changed.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.

Claims

1. The utility model provides a portable cross square ruler, its characterized in that, includes the pedestal, and the up end of pedestal is equipped with the knob, and inside horizontal chi hole and the vertical scale hole of having seted up has been inserted in the horizontal chi hole, has inserted the vertical scale in the vertical scale hole, and the location head is installed to the initiating terminal of vertical scale, and the pointed end of location head is the setpoint.

2. The movable cross square of claim 1, wherein the lower edge and the left edge of the stand are perpendicular to each other, the lower edge of the stand being a reading edge of the longitudinal scale, and the left edge of the stand being a reading edge of the lateral scale.

3. The movable cross square of claim 1, wherein the positioning head comprises a rectangular parallelepiped-shaped main body and a tip connected to one end of the main body, the tip terminating in the positioning point.

4. The movable cross square of claim 3, wherein the positioning point is located on the same longitudinal line as the left edge of the stand.

5. The movable cross square of claim 1, wherein the transverse ruler hole has a slot therein with a width equal to that of the longitudinal ruler.

6. The movable cross square of claim 1, wherein the start scale lines of the lateral scale and the longitudinal scale are 0, and the positioning head shields the longitudinal scale by a dimension equal to the distance from the lower edge of the lateral scale to the lower edge of the pedestal.

7. The movable cross square of claim 1, wherein the pedestal has a square shape, and the cross portions of the lateral ruler and the longitudinal ruler located inside the pedestal are overlapped; the knob is screwed into the pedestal through external threads, and the transverse ruler and the longitudinal ruler are fixed or released by screwing or unscrewing the knob.