CN208973858U - A kind of femoral head diameter measuring device - Google Patents

Abstract

The utility model discloses a kind of femoral head diameter measuring devices, support outer ring center is located in the support, and be between the two fixedly welded bottom by support rod, the support inner ring inside bottom is welded with cross support frame, and support rotary table is equipped with right above support frame as described above；Ring-side wall is equipped with multiple groups measuring scale in the support, and measuring scale facing each other is one group, and the measuring scale runs through and be slidably connected to ring-side wall in support, and measuring scale tail end is telescopically connected to by spring and the threaded rod on support outer ring.From the utility model structure, change traditional measurement method, the point contact of femoral head and measuring tool is become into face contact, improves measurement accuracy, while passing through annular measurement method, the same time can measure multi-group data, measuring speed is improved, working efficiency greatly improves, and whole device structure is simple, easy to operate, the diameter of femoral head can fast, be intuitively measured, picks out the double acting head prosthesis to match with patient convenient for healthcare givers.

Description

A kind of femoral head diameter measuring device

Technical field

The utility model relates to medical instruments fields, more particularly, to a kind of femoral head diameter measuring device.

Background technique

Replacement operation of artificial femoral head is the effective ways for treating femoral neck fracture in elders.Femoral head replacement is performed the operation at present, by femur Head is removed from acetabular fossa, is not modified to acetabular fossa, and then cutting neck of femur replaces double acting head prosthesis, is planted at acetabular fossa Enter.Femoral head replacement operation requires preoperative and postoperative femoral head prosthesis to match with acetabular bone, if occur femoral head prosthesis it is excessive or It is too small, it will lead to the dislocation of hip joint and the worn out acetabular bone of femoral head, lead to fearful complication, seriously affect therapeutic effect, it is unfavorable In the rehabilitation of patient.Double motion head diameter is chosen in operation to match with femoral head diameter, chosen according to femoral head diameter Corresponding double motion head specifications and models.The measurement of femoral head diameter at present relies primarily on the result of vernier caliper measurement and patient in art Experience is that line is contacted with femoral head contact site, although measurement is simple, quick, is needed due to vernier calipers manual operations It repeatedly to measure, the measurement of femoral head maximum gauge cannot be completely secured, be easy to increase the probability of measurement fault, not only extend hand The art time, and be easy to cause and choose double motion head diameter and femoral head diameter mismatch.Femoral head diameter measuring device is to be used for The measuring tool used when femoral head replacement operation is carried out, the rationalization degree direct influence doctor of design is to double acting head prosthesis Selection and operation progress, be operated convenient for doctor.

Utility model content

The purpose of this utility model is to provide a kind of femoral head diameter measuring devices, overcome the deficiencies of existing technologies, solution Certainly measurement method is cumbersome in the prior art, cannot be guaranteed the measurement of femoral head maximum gauge, is easy to increase the probability of measurement fault, Not only extend operating time, but also is easy to cause and chooses double motion head diameter and the unmatched problem of femoral head diameter.

In order to achieve the above object, the utility model uses following technical scheme:

A kind of femoral head diameter measuring device, including outer ring, support inner ring are supported, support outer ring is located in the support Center, and be between the two fixedly welded bottom by support rod, the support inner ring inside bottom is welded with cross support Frame, support frame as described above surface are equipped with support rotary table；

Ring-side wall is equipped with multiple groups measuring scale in the support, and measuring scale facing each other is one group, and the measuring scale passes through Ring-side wall in support is worn and is slidably connected to, measuring scale tail end is telescopically connected to by spring and the threaded rod on support outer ring.

Further improvement of the utility model scheme is to be rotated between support frame as described above and support rotary table by swivel bearing It connects, limiting groove is equipped at the support rotary table top center.

Further improvement of the utility model scheme is that the measuring scale front end is welded with guide rod straight up, The guide rod lower half portion is vertical shape, and top half is convex arc shape and the corresponding measuring scale tail end of bending direction direction.

Further improvement of the utility model scheme is that the threaded rod is located in support outer ring through support outer ring It is threaded with locking nut on the threaded rod of side, is threaded with wing nut on the threaded rod on the outside of support outer ring.

Further improvement of the utility model scheme is that the measuring scale longitudal section is square and measured value instruction reading " 0cm~10cm " is located at measuring scale upper surface, and numerical value extends to front end from measuring scale tail end, stops when entire measuring device is in When breath state, numerical value " 0cm " is placed exactly between measuring scale and support inner ring lateral wall intersection and every group of measuring scale that there are solid The spacing of fixed number value " 2cm ".

Further improvement of the utility model scheme is that the measuring scale is respectively positioned on above support rotary table and is affixed on branch and holds round Platform upper surface.

Compared with prior art, the utility model has the beneficial effects that

One, a kind of femoral head diameter measuring device provided by the utility model supports and is equipped with limit at rotary table top center Groove, it is ensured that in measurement, femoral head is stablized on support rotary table, the situation of left-right position offset will not occur, convenient for every Group measuring scale data equity, improves measurement precision.

Two, a kind of femoral head diameter measuring device provided by the utility model, there are fixed numbers between every group of measuring scale The spacing of " 2cm " guarantees that every group of measuring scale does not interfere mutually, improves the accuracy of measurement numerical value.

Three, a kind of femoral head diameter measuring device provided by the utility model, numerical value " 0cm~10cm " on measuring scale from Measuring scale tail end extends to front end, and when entire measuring device is in resting state, numerical value " 0cm " is placed exactly in measuring scale and branch Inner ring lateral wall intersection is supportted, when supporting on rotary table convenient for femoral head to be placed in this way, direct readout value is convenient and efficient.

Four, a kind of femoral head diameter measuring device provided by the utility model, measuring scale longitudal section is square, effective in this way Ground is prevented when measuring femoral head, and measuring scale rotates, and influences the orderly progress for measuring work.

Five, a kind of femoral head diameter measuring device provided by the utility model, guide rod lower half portion are vertical shape, upper half Part is convex arc shape and the corresponding measuring scale tail end of bending direction direction, in this way convenient for femoral head to be placed on support rotary table, Damage when reducing measurement to femoral head influences the accuracy for measuring numerical value.

Six, a kind of femoral head diameter measuring device provided by the utility model passes through rotation between support frame and support rotary table Shaft holds rotation connection, facilitates during measuring femoral head in this way, rotates femoral head, and it is straight to reach measurement femoral head many levels The purpose of diameter improves the precision of measurement.

Seven, a kind of femoral head diameter measuring device provided by the utility model, on the threaded rod on the inside of support outer ring It is threaded with locking nut, wing nut is threaded on the threaded rod on the outside of support outer ring, when measuring device is long When time use causes spring deformation amount to change, the position readings of measuring scale can change, adjusting lock nut and butterfly The position of nut measures the numerical value correction of ruler, guarantees the accuracy of measurement numerical value.

Eight, a kind of femoral head diameter measuring device provided by the utility model, changes traditional measurement method, by femoral head Become face contact with the point contact of measuring tool, improve measurement accuracy, while by annular measurement method, the same time be can measure Multi-group data out improves measuring speed, and working efficiency greatly improves, and whole device structure is simple, easy to operate, can it is quick, The diameter for intuitively measuring femoral head, picks out the double acting head prosthesis to match with patient convenient for healthcare givers.

Detailed description of the invention

Fig. 1 is the structure schematic top plan view of the utility model.

Fig. 2 is longitudinal A-A structure sectional view of the utility model, and 20 be femoral head in figure.

Specific embodiment

With reference to the accompanying drawings and detailed description, the utility model is furtherd elucidate, it should be understood that following specific embodiment parties Formula is merely to illustrate the utility model rather than limitation the scope of the utility model, after having read the utility model, this Field technical staff falls within the application model as defined in the appended claims to the modification of the various equivalent forms of utility model It encloses.

Embodiment 1: a kind of femoral head diameter measuring device as shown in Figure 1 and Figure 2, it is characterised in that: including supporting outer ring 1, inner ring 2 is supported, and the support inner ring 2 is set to support 1 center of outer ring, and bottom is fixed by support rod 3 weld between the two It connects, 2 inside bottom of support inner ring is welded with cross support frame 4, and support rotary table 5 is equipped with right above support frame as described above 4；Institute It states support 2 side wall of inner ring and is equipped with multiple groups measuring scale 6, measuring scale 6 facing each other is one group, and the measuring scale 6 runs through and slides Dynamic to be connected to support 2 side wall of inner ring, 6 tail end of measuring scale is telescopically connected to by spring 7 with the threaded rod 11 on outer ring 1 is supported；Institute It states and is rotatablely connected between support frame 4 and support rotary table 5 by swivel bearing 8, limit is equipped at 5 top center of support rotary table Groove 51；6 front end of measuring scale is welded with guide rod 61 straight up, and 61 lower half portion of guide rod is vertical Shape, top half are convex arc shape and corresponding 6 tail end of measuring scale of bending direction direction；The threaded rod 11 is outer through support Ring 1 is threaded with locking nut 12 on the threaded rod 11 of 1 inside of support outer ring, the screw thread positioned at 1 outside of support outer ring Wing nut 13 is threaded on bar 11；6 longitudal section of measuring scale be square and measured value instruction reading " 0cm~ 10cm " is located at 6 upper surface of measuring scale, and numerical value extends to front end from 6 tail end of measuring scale, when entire measuring device is in rest shape When state, numerical value " 0cm " be placed exactly in measuring scale 6 and support 2 lateral wall intersection of inner ring and every group of measuring scale 6 between there are fixations The spacing of numerical value " 2cm "；The measuring scale 6 is respectively positioned on 5 top of support rotary table and is affixed on support 5 upper surface of rotary table.

Utility model works mode is as follows: being first gradually placed in femoral head 20 to be measured on support rotary table 5, process Middle measuring scale 6 is moved backward with the merging of femoral head 20, after being placed in, reads the reading of every group of measuring scale 6, then 2cm is added on every group number-reading, numerical value at this time corresponds to the diameter of each contact surface of femoral head 20 under the state；Detection finishes Afterwards, support rotary table 5 or rotation femoral head 20 can be rotated, measures the diameter of 20 different angle of femoral head, many levels, and then fast Speed is accurately selected and thinks matched prosthese model with patient.

Claims (6)

1. a kind of femoral head diameter measuring device, it is characterised in that: including support outer ring (1), support inner ring (2), the support Inner ring (2) is set to support outer ring (1) center, and is between the two fixedly welded bottom by support rod (3), the support inner ring (2) inside bottom is welded with cross support frame (4), and support rotary table (5) is equipped with right above support frame as described above (4)；

Support inner ring (2) side wall is equipped with multiple groups measuring scale (6), and measuring scale (6) facing each other is one group, the measurement Ruler (6) runs through and is slidably connected to support inner ring (2) side wall, and measuring scale (6) tail end passes through on spring (7) and support outer ring (1) Threaded rod (11) be telescopically connected to.

2. a kind of femoral head diameter measuring device according to claim 1, it is characterised in that: support frame as described above (4) and branch It holds round and is rotatablely connected between platform (5) by swivel bearing (8), limiting groove is equipped at support rotary table (5) top center (51).

3. a kind of femoral head diameter measuring device according to claim 1, it is characterised in that: measuring scale (6) front end Head is welded with guide rod (61) straight up, and guide rod (61) lower half portion is vertical shape, and top half is upper convex arc Shape and corresponding measuring scale (6) tail end of bending direction direction.

4. a kind of femoral head diameter measuring device according to claim 1, it is characterised in that: the threaded rod (11) is run through In support outer ring (1), it is located on the threaded rod (11) on the inside of support outer ring (1) and is threaded with locking nut (12), be located at branch Wing nut (13) are threaded on threaded rod (11) on the outside of support outer ring (1).

5. a kind of femoral head diameter measuring device according to claim 1 or 3, it is characterised in that: the measuring scale (6) is vertical Section is square and measured value instruction reading " 0cm~10cm " is located at measuring scale (6) upper surface, and numerical value is from measuring scale (6) tail End extends to front end, and when entire measuring device is in resting state, numerical value " 0cm " is placed exactly in measuring scale (6) and support There are the spacing of fixed numbers " 2cm " between ring (2) lateral wall intersection and every group of measuring scale (6).

6. a kind of femoral head diameter measuring device according to claim 5, it is characterised in that: the equal position of the measuring scale (6) Above support rotary table (5) and it is affixed on support rotary table (5) upper surface.