阅读说明：本技术 一种股骨测定装置 (Thighbone measuring device ) 是由 李建东 贾京亮 王东林 于 2020-03-26 设计创作，主要内容包括：本发明提供一种股骨测定装置,包括本体,所述本体底部设有定位板,所述本体的顶部插入有可沿着所述本体上下移动和左右旋转的滑杆,所述滑杆的顶部插设有可沿着所述滑杆顶部移动的探测针,所述探测针上的上设置有规格刻度线一,所述本体的前侧上设置有刻度线二；所述本体的后侧设有外旋板,所述本体前侧设置有可带着所述外旋板转动的旋钮,所述本体前侧上环绕所述旋钮设置有R刻度和L刻度。所述股骨测定装置将左右膝关节的股骨参数测量和内外旋定位功能合二为一,并有连续的内外旋角度可供选择调整,极大的方便了主治医生测量股骨参数、选择股骨假体型号以及定位股骨截骨内外旋角度,提高了手术效率。(The invention provides a femur measuring device, which comprises a body, wherein a positioning plate is arranged at the bottom of the body, a slide bar capable of moving up and down and rotating left and right is inserted into the top of the body, a probe capable of moving along the top of the slide bar is inserted into the top of the slide bar, a specification scale mark I is arranged on the probe, a scale mark II is arranged on the front side of the body, an external rotation plate is arranged on the rear side of the body, a knob capable of driving the external rotation plate to rotate is arranged on the front side of the body, and R scale and L scale are arranged on the front side of the body in a surrounding manner.)

1. A femur measuring device is characterized by comprising a body, wherein a positioning plate is arranged at the bottom of the body, a slide bar capable of moving up and down and rotating left and right is inserted into the top of the body, a probe capable of moving along the top of the slide bar is inserted into the top of the slide bar, a first specification scale mark is arranged on the probe, and a second scale mark is arranged on the front side of the body;

the rear side of body is equipped with outward and revolves the board, the body front side is provided with can take outward and revolves board pivoted knob, it is provided with R scale and L scale to encircle on the body front side the knob.

2. The femoral measurement device of claim 1, wherein the knob is connected to an eccentric shaft, the eccentric shaft is provided with a groove, and the bottom of the external rotation plate is provided with a protrusion matching with the groove.

3. The femoral measurement device of claim 1, wherein the external rotation plate is hinged to the body through a cylindrical pin, a slot is formed in a rear side of the external rotation plate, and a limiting structure matched with the slot is formed in a rear side of the body.

4. The femoral measurement device of claim 1, wherein the sliding rod has a head at a top end thereof, the head having a horizontal sliding slot, and the probe is disposed in the sliding slot.

5. The femoral measurement device of claim 1, wherein a damping device is disposed between the body and the knob, and a damping device is disposed between the sliding bar and the probe.

6. The femoral sizing device of claim 5, wherein the dampening device is a spring and a ball.

7. The femoral measurement device of claim 1, wherein a mounting hole is formed in one side of the body and communicates with the insertion hole, and a ball plunger is disposed in the mounting hole.

8. The femoral measurement device of claim 1, wherein the external rotation plate has positioning lugs on both sides thereof, and the positioning lugs have positioning holes formed thereon.

9. The femoral measurement device of claim 1, wherein the probe needle is provided with a silicone handle at its end.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a femur measuring device.

Background

The knee joint is the largest and most complex joint in the human body, the knee replacement is to replace the whole or partially damaged natural knee joint of a patient with a knee prosthesis, and in the total knee replacement, multi-plane and multi-angle osteotomy is required to be performed on the femoral side in order to install the femoral side prosthesis. Generally, an osteotomy is firstly carried out at the far end of the femur, then the parameter of the femoral condyle is measured by taking the osteotomy surface as a reference surface, and the position of the osteotomy module is determined in the next step. The measurement of the femoral condyle parameters is mainly to determine the spacing between the femoral posterior condyle and the femoral anterior curved surface so as to select the femoral prosthesis with the proper specification. The determination of the position of the osteotomy module is generally based on the femoral posterior condyle to determine the internal and external rotation angle and the anterior-posterior position of the osteotomy module, or based on the femoral anterior curvature.

Disclosure of Invention

The invention aims to provide a femur measuring device to solve the problems that the existing femur parameter measurement and external rotation positioner is limited in external rotation angle selection, and the external rotation angle is complex to adjust and operate.

In order to solve the technical problems, the invention provides the following technical scheme:

a femur measuring device comprises a body, wherein a positioning plate is arranged at the bottom of the body, a slide bar capable of moving up and down and rotating left and right is inserted into the top of the body, a probe capable of moving along the top of the slide bar is inserted into the top of the slide bar, a first specification scale mark is arranged on the probe, a second scale mark is arranged on the front side of the body, an outward rotating plate is arranged on the rear side of the body, a knob capable of driving the outward rotating plate to rotate is arranged on the front side of the body, and R scales and L scales are arranged on the front side of the body in a surrounding mode.

The knob is connected with the eccentric shaft, the eccentric shaft is provided with a groove, and the bottom of the external rotating plate is provided with a bulge matched with the groove.

The outer rotating plate is hinged to the body through a cylindrical pin, a clamping groove is formed in the rear side of the outer rotating plate, and a limiting structure matched with the clamping groove is arranged on the rear side of the body.

The top end of the sliding rod is provided with a head, the head is provided with a horizontal sliding groove, and the detection needle is arranged in the sliding groove.

A damping device is arranged between the body and the knob, and a damping device is arranged between the sliding rod and the probe needle.

Preferably, the damping device is a spring and a ball.

The ball plunger is arranged in the mounting hole.

The two sides of the outward rotating plate are provided with positioning lugs, and positioning holes are formed in the positioning lugs respectively.

Preferably, the end of the probe needle is provided with a silica gel handle.

The technical scheme of the invention has the following beneficial effects:

in the scheme, the femur measuring device integrates the femur parameter measurement and internal and external rotation positioning functions of the left knee joint and the right knee joint, and has continuous internal and external rotation angle selection and adjustment, so that great convenience is brought to an attending doctor to measure the femur parameter, select the model of the femoral prosthesis and position the internal and external rotation angles of the osteotomy of the femur, and the operation efficiency is improved.

Drawings

FIG. 1 is an exploded view of the femoral measurement device of the present invention;

FIG. 2 is a schematic view of the femoral measurement device of the present invention;

FIG. 3 is a front view of the femoral measurement device of the present invention;

FIG. 4 is a top view of the femoral measurement device of the present invention;

FIG. 5 is a side view of a femoral measurement device of the present invention.

[ reference numerals ]

1. A silica gel handle;

2. a probe pin;

3. a ball bearing;

4. a spring;

5. a slide bar;

6. a body;

7. a knob;

8. an eccentric shaft;

9. a cylindrical pin;

10. an outward rotating plate;

11. a ball plunger;

12. a sleeve;

13. and (7) a gasket.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 5, an embodiment of the invention provides a femur measuring device, which includes a body 6, a sliding rod 5, a probe 2 and an external rotation plate 10, wherein a positioning plate protruding rearward is disposed at the bottom of the body 6, the positioning plate is in the shape of a sole and disposed at two sides of the body 6 for supporting a posterior femoral condyle, and the measurement of parameters of the femoral condyle and the positioning of an internal rotation angle and an external rotation angle are performed with reference to the posterior femoral condyle, a downwardly extending insertion hole is disposed at the top end of the body 6, an observation hole communicating with the insertion hole is disposed at the front side, two sides of the observation hole are marked with second scale lines, the sliding rod 5 is inserted into the insertion hole and can slide up and down and rotate in the insertion hole, an identification line matched with the second scale line is disposed on the sliding rod 5 so as to measure the anterior-posterior diameter of a femur and the position of a concave point of a curved surface at the anterior side of the femur, the probe 2 is horizontally slidably connected to the top end of the sliding rod 5, the probe 2 is marked with a first scale line corresponding to the model of the femur, a central portion of the external rotation plate 10 is hinged to the body through a knob, and a knob is disposed on the knob for controlling the knob 357 for rotating the knob and the knob for controlling the knob 7 for rotating knob.

As shown in figure 1, the knob 7 and the gasket 13 are connected with the eccentric shaft 8, the eccentric shaft 8 is provided with a groove, the bottom of the outward rotating plate 10 is provided with a bulge matched with the groove, the outward rotating plate 10 can be shifted when the eccentric shaft 8 rotates, so that the outward rotating positioning angle can be adjusted, the specific outward rotating angle value can be read through the angle scale on the body 6, if the outward rotating angle value is a left knee, L scale is read, and if the outward rotating angle value is a right knee, R scale is read.

Wherein, the draw-in groove has been seted up to the intermediate position of outer board 10 rear side of spiraling, 6 rear sides of body be equipped with draw-in groove complex limit structure restricts outer board 10 pivoted extreme position revolves, and is concrete, respectively has 0 to 7 continuous inside and outside angle of spiraling to select the adjustment about.

As shown in fig. 2, the top end of the sliding rod 5 is provided with a head, the head is provided with a sliding groove in the horizontal direction, and the detection needle 2 is arranged in the sliding groove and can slide in the sliding groove, so that the position of a concave point of a curved surface on the front side of a femur can be conveniently detected.

As shown in fig. 1, a damping device is arranged between the body 6 and the knob 7 to provide proper damping and locking for the knob 7, specifically, the body 6 is provided with a blind hole above the knob 7, a spring 4 and a ball 3 are installed in the blind hole, and a concave pit matched with the blind hole is arranged on the periphery of the knob. The slide bar 5 with be equipped with damping device between the probe needle 2, it is specific, the blind hole has been seted up to the spout bottom, installs spring 4 and ball 3 in, for the probe needle 2 provides suitable damping when sliding in the spout for it is more smooth to slide.

Wherein, a side of the body 6 is provided with a mounting hole communicated with the jack, and a ball plunger 11 is arranged in the mounting hole to provide proper damping for the sliding and the rotation of the sliding rod 5.

As shown in fig. 3, two sides of the outward rotating plate 10 are provided with positioning lugs, the positioning lugs are respectively provided with positioning holes, the positioning holes are provided with sleeves 12, and the thighbone can be drilled and positioned through the positioning holes.

Wherein, the tip of probe 2 is equipped with silica gel handle 1, silica gel handle 1 adopts medical silica gel material and has the bead, has increased frictional force, and the doctor of being convenient for is handheld.

The femur measuring device provided by the invention has the following use process:

after the distal femur osteotomy is completed, the back surface of the femur measuring device is attached to the distal femur osteotomy surface, the two side positioning plates at the lower end of the body 6 are respectively attached to the inner side and the outer side of the posterior femur, then an operator can insert into the inner hexagonal groove of the knob 7 by means of a corresponding hexagonal screwdriver, the knob 7 is selected and rotated to a required angle by observing the R scale or L scale around the knob 7, and after confirmation, the operator can drill and position at the distal femur by means of a tool such as a fine drill through the positioning holes at the two sides of the outer rotating plate 10.

An operator can vertically slide, rotate the sliding rod 5 and stretch the probe 2 forwards and backwards, the contact at the front end of the probe 2 can be used for detecting the proper position of the front side of the femur, and the parameters of the femur condyle can be determined through the second scale marks on the two sides of the observation hole and the identification lines on the sliding rod 5.

In the scheme, the femur measuring device integrates the femur parameter measurement and internal and external rotation positioning functions of the left knee joint and the right knee joint, and has the continuous internal and external rotation angles from 0 degree to 7 degrees for selection and adjustment, so that great convenience is brought to an attending doctor for measuring the femur parameters, selecting the model of the femoral prosthesis and positioning the internal and external rotation angles of the osteotomy of the femur, and the operation efficiency is improved.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.