CN113367861B

CN113367861B - Probe lockable thighbone measurer

Info

Publication number: CN113367861B
Application number: CN202110685881.5A
Authority: CN
Inventors: 闵信群; 毛联甲; 黄仁宏; 魏崇斌; 王健
Original assignee: Tianyan Medical Equipment Co ltd
Current assignee: Tianyan Medical Equipment Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2023-01-03
Anticipated expiration: 2041-06-21
Also published as: CN113367861A

Abstract

The invention discloses a probe lockable femur measurer, which comprises a measurer body, wherein the measurer body comprises a fixed part and an adjusting part, the upper end of the adjusting part is provided with a column, a stand column is arranged in the column in an extending manner, the upper end of the stand column is provided with a probe body, the upper end of the stand column is provided with a conical surface pressure head, the probe body comprises a left side body and a right side body, the left side body and the right side body are respectively positioned at two sides of the conical surface pressure head, one sides of the left side body and the right side body, which are close to the conical surface pressure head, are respectively provided with a locking inclined surface, one ends of the left side body and the right side body are provided with probe heads in a connecting manner, and one ends of the left side body and the right side body, which are far away from the probe heads, are provided with actuating mechanisms; according to the invention, inaccurate measurement caused by autorotation or tilting of the probe body can be avoided; when the position of the probe head is selected, the probe body can be locked through the actuating mechanism, and inaccurate measurement caused by the fact that the probe body easily shakes is prevented.

Description

Probe lockable femur measurer

Technical Field

The invention relates to the technical field of medical instruments, in particular to a probe lockable femur measurer.

Background

The knee joint is one of the largest, most complex joints in the human body, and knee replacement surgery refers to the replacement of a patient's fully or partially damaged natural knee joint with a knee prosthesis. In total knee replacement surgery, a multi-planar, multi-angular resection is required on the femoral side in order to install a femoral side prosthesis. Generally, an osteotomy is firstly carried out at the far end of the femur, then parameters of the femoral condyle are measured by taking the osteotomy surface as a datum 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 typically based on the femoral posterior condyle to determine the internal and external rotation angle and the anterior-posterior position of the osteotomy module (i.e., posterior reference), or based on the femoral anterior curvature to determine the anterior-posterior position of the osteotomy module (i.e., anterior reference).

In the prior art, most of the measurement of femoral condyle parameters mainly comprises the steps of taking the femoral posterior condyle as a reference, adjusting a femoral probe to determine a femoral prosthesis with a proper specification, and forming a femoral AP measurer together with external rotation angle adjustment and posterior condyle osteotomy amount adjustment. Specifically, the probe head is pointed on the anterior condylar curve, and a reference point is found by moving upwards or downwards to control the height relative to the bone so as to obtain a proper reference of the osteotomy amount.

The prior art has certain defects:

1. most of the existing probes cannot be locked and shake obviously, most of the existing orthopedic surgeries attempt to reduce auxiliary tissue injury in the surgical process, the minimally invasive surgery technology reduces interference and potential trauma to soft tissues, but causes the soft tissues to apply pressure to the probes, so that the probes rotate and move under the condition that a doctor does not know, a patient is injured, and meanwhile, when the doctor determines an excision reference, due to the fact that the probes shake, correct measurement cannot be performed possibly, a prosthesis with an incorrect size is selected, the surgical process is prolonged, or adverse effects are generated on the surgical result;

2. when the traditional femoral condyle measuring device is used for measuring, the probe and the femoral condyle measuring device are in a vertical state, and an elevation angle exists between the upper end surface of the femoral condyle prosthesis and the horizontal plane, so that the osteotomy amount measured by the probe is larger than the osteotomy amount theoretically required by the traditional femoral condyle measuring device, and the osteotomy position is inaccurate;

3. after the measurement of the femur AP measurer is finished, a doctor can verify whether the osteotomy amount is proper again before using the corresponding osteotomy module for osteotomy, so that the operation steps of the operation are increased, the operation time is prolonged, the instrument cost is correspondingly increased, even a great operation error is caused to the operation, and the operation risk is increased;

the invention discloses a probe lockable femur measurer, which is used for solving the problems.

Disclosure of Invention

The present invention is directed to a probe lockable femur measurer, which solves the above problems in the prior art.

In order to solve the technical problems, the invention provides the following technical scheme: a probe lockable femur measurer comprises a measurer body, wherein the measurer body comprises a fixing part and an adjusting part, the fixing part is fixed on a osteotomy platform obtained by first osteotomy of the distal end of a femur, the adjusting part can move up and down along the fixing part to drive a probe body to move up and down, the osteotomy amount of a front condyle and a rear condyle is determined according to the indication of a probe, a column is arranged at the upper end of the adjusting part and integrally formed with the adjusting part, a stand column is arranged in the column in an extending manner, the bottom of the stand column is welded in the column, the upper end of the stand column is provided with a probe body, the upper end of the stand column is provided with a conical surface pressure head, the stand column and the conical surface pressure head are integrally formed, the probe body comprises a left side body and a right side body, the left side body and the right side body are respectively positioned at two sides of the conical surface pressure head, and one sides of the left side body and the right side body, which are close to the conical surface pressure head, are respectively provided with a locking inclined surface, the locking inclined planes and the conical surface pressure heads on the left side body and the right side body are mutually limited, so that the probe body cannot realize rotation or tilting in a vertical plane, a small gap is reserved between the lower ends of the left side body and the right side body and the column casing, the probe can realize linear telescopic motion and swing motion in the same horizontal plane, inaccurate measurement caused by rotation or tilting of the probe body is avoided, probe heads are continuously arranged at one ends of the left side body and the right side body, the left side body, the right side body and the probe heads are integrally formed, the probe heads are used for detecting the lowest position of the osteotomy of the anterior condyle, the position is judged by the experience of a doctor, an executing mechanism is arranged at one end, far away from the probe heads, of the left side body and the right side body, and is used for locking the probe body and the conical surface pressure heads, the locking inclined planes on the left body and the right body approach to the direction of the conical surface pressure head by using the actuating mechanism, so that the locking inclined planes and the conical surface on the conical surface pressure head generate mutual limiting action, and the probe body is locked. When the position of probe head was selected, the lockable probe body prevented that the probe body from rocking easily and measuring inaccurately that leads to.

Preferably, the actuating mechanism comprises a left locking head, a right locking head, a locking knob, an outer conical surface locking block and a conical surface groove, wherein the left locking head is arranged at one end of the left body far away from the probe head, the left locking head and the left body are integrally formed, the right locking head is arranged at one end of the right body far away from the probe head, the right locking head and the right body are integrally formed, the locking knob is sleeved on the left locking head and the right locking head and used for locking the left body and the right body, an internal thread hole is formed in the locking knob, and the left locking head and the right locking head jointly form a cylindrical structure with a gap, the cylindrical structure is provided with an external thread, an internal thread hole is in threaded connection with the external thread, the middle parts of the left side body and the right side body are provided with an external conical surface locking block, a position corresponding to the external conical surface locking block on the locking knob is provided with a conical surface groove, when the probe body needs to be locked, the locking knob is manually rotated, a left locking head and a right locking head are made to move relatively in the direction extending into the locking knob under the action of the screw, and then the external conical surface locking block is driven to move in the direction extending into the conical surface groove, under the action of the conical surface structures of the external conical surface locking block and the conical surface groove, the left side body and the right side body are driven to approach each other, and then the left side body, the right side body and the conical surface pressure head are locked.

Preferably, the locking knob is provided with spacing pin in the last insertion, spacing pin's middle part is located a locking knob inboardly, and spacing pin is located between external screw thread and the external conical surface latch segment, and a left locking head and a right locking head are when the spiral shell moves down to stretching into or stretching out this internal direction motion of probe, and spacing pin on the locking knob can take place to interfere with external screw thread or external conical surface latch segment, so can prevent that a locking knob from droing, can prevent simultaneously that the probe body from being crossed the locking, has avoided the probe body to be damaged.

Preferably, the actuating mechanism comprises an external thread head, a second locking knob, a left locking conical surface, a right locking conical surface and a second conical surface groove, the external thread head is arranged at one end, far away from the probe head, of the right body, the external thread head and the right body are integrally formed, the second locking knob is arranged on the external thread head and used for locking the left body and the right body, a threaded hole is formed in the second locking knob, the external thread head is screwed in the threaded hole, a left locking conical surface is arranged at one end, far away from the probe head, of the left body, a right locking conical surface is arranged at a position, corresponding to the left locking conical surface, on the right body, the left locking conical surface and the right locking conical surface are driven to move relative to the direction extending into the second conical surface groove by manually rotating the second locking knob when the probe body needs to be locked, the left locking conical surface and the right locking conical surface are driven to move towards the direction extending into the second conical surface, and then the left body and the right body are driven to move towards the pressing head, and the left body.

Preferably, the position that lies in the left side locking conical surface on the body of left side is provided with the through-hole No. one, the position that lies in the right side locking conical surface on the body of right side is provided with the through-hole No. two, stretch into in through-hole No. one and the through-hole No. two and be provided with and prevent the shearing pin, prevent shearing pin and No. two through-hole tight couplings, prevent leaving the space between shearing pin and the through-hole No. one, when left side body and right side body approach each other, prevent that the shearing pin reduces gradually and the clearance between the through-hole No. one, to taking place to interfere between the two, prevent that the shearing pin can restrict left side body and right side body and continue to approach this moment, so can prevent to take place the shearing action between left side body and the right side body, avoided the probe body to be damaged.

Preferably, an inner edge protrusion is arranged in the threaded hole, a threaded hole is formed in one end, far away from the right body, of the external thread head, an anti-falling screw is screwed in the threaded hole, and a screw head of the anti-falling screw is lapped on the inner edge protrusion and used for preventing the second locking knob from falling off.

Preferably, actuating mechanism includes No. two left locking heads, no. two right locking heads, no. three locking knob, tapering screw hole, the one end that the probe head was kept away from to the left side body is provided with No. two left locking heads, no. two left locking heads and left side body integrated into one piece, the one end that the probe head was kept away from to the right side body is provided with No. two right locking heads, right side body and No. two right locking head integrated into one piece, no. two left locking heads and No. two right locking heads have cup jointed No. three locking knob, be provided with the tapering screw hole in the No. three locking knob, no. two left locking heads and No. two right locking heads form gapped centrum structure jointly, are provided with the external screw thread on this centrum structure, tapering screw hole and the mutual spiro union of external screw thread, when needing to lock the probe body, manual rotation No. three locking knob makes No. two left locking heads and No. two right locking heads do relative motion to the direction of stretching into No. three locking knobs under the screw transfer, under the effect of tapering and screw hole structure, left side body and right side body drive the conical surface each other, and then make the pressure head between the body and the pressure head.

Preferably, both sides of the adjusting part are provided with upper osteotomy indicating grooves, both sides of the fixing part are provided with lower osteotomy indicating surfaces, the adjusting part moves to drive the upper osteotomy indicating grooves to move, the distance between the upper osteotomy indicating grooves and the lower osteotomy indicating surfaces is determined, the distance determines the osteotomy amount and the size and the model of the femoral condyle prosthesis, the upper osteotomy indicating grooves are internally provided with winged knives which are matched with the upper osteotomy indicating grooves, the anterior condyle osteotomy amount can be further verified on the lateral surfaces of the anterior condyles, the measurement is more accurate, verification on a four-in-one osteotomy block is not needed, the operation steps are optimized, the operation time is reduced, and the operation risk is reduced.

Preferably, an elevation angle alpha exists between the central axis of the probe body and the central axis of the winged knife and the horizontal plane, the degree of the elevation angle alpha is usually 5 degrees, the elevation angle is fit with the elevation angle of the upper end surface of the femoral condyle prosthesis, so that the osteotomy amount detected by the probe is close to a theoretical value, and mismatching between the femoral condyle and the femur is avoided.

Preferably, the probe is overhead to have seted up the stress dispersion groove, when approaching in opposite directions between left side body and the right side body, the stress dispersion groove dispersible pressure prevents that the probe from being damaged, the probe takes out the mouth still to have seted up to the probe body one end that is close to the probe, stress dispersion groove and probe take out a mouthful intercommunication, conical surface pressure head accessible probe takes out mouthful and deviates from the probe originally externally to can dismantle the probe body.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the probe lockable femur measurer disclosed by the invention, the locking inclined planes and the conical pressure heads on the left side body and the right side body are mutually limited, so that the probe body cannot realize rotation or tilting in a vertical plane, and a small gap is reserved between the lower ends of the left side body and the right side body and a column casing, so that the probe can realize linear telescopic motion and swinging motion in the same horizontal plane, and inaccurate measurement caused by rotation or tilting of the probe body is avoided; the probe body and the conical surface pressure head can be locked by the actuating mechanism, namely the locking inclined planes on the left side body and the right side body approach to the conical surface pressure head by the actuating mechanism, so that the locking inclined planes and the conical surfaces on the conical surface pressure head generate mutual limiting action, the probe body is locked, and inaccurate measurement caused by easy shaking of the probe body is prevented;

2. according to the probe lockable femur measurer disclosed by the invention, the winged knife is matched with the osteotomy indicating groove, the osteotomy amount of the anterior condyle can be further verified on the lateral surface of the anterior condyle, the measurement is more accurate, the verification on a four-in-one osteotomy block is not needed, the operation steps are optimized, the operation time is reduced, and the operation risk is reduced;

3. according to the probe lockable femur measurer disclosed by the invention, the elevation angles alpha exist between the central axes of the probe body and the winged knife and the horizontal plane, and the elevation angles are fit with the elevation angle of the upper end surface of the femoral condyle prosthesis, so that the osteotomy amount detected by the probe is close to a theoretical value, and the mismatching between the femoral condyle and the femur is avoided;

4. according to the probe lockable femur measurer disclosed by the invention, the probe taking-out port is added, the probe body can be freely disassembled only in a loose state of the probe body, sclerotin and cortex are prevented from being scratched in the measurement process of the femur measurer, and the operation risk and the use difficulty of instruments are reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a perspective view of a probe lockable femoral measurement instrument according to the present invention;

FIG. 2 is a perspective view of an actuator in accordance with aspects of the present invention;

FIG. 3 is a perspective view of an actuator according to a second aspect of the present invention;

FIG. 4 is a second perspective view of an actuator according to a second aspect of the present invention;

FIG. 5 is a perspective view of a third actuator of the present invention;

FIG. 6 is a schematic diagram of a probe lockable femoral measurement instrument according to the present invention;

FIG. 7 is a side view of a probe lockable femurometer of the present invention;

in the figure: a fixed part-1; an adjustment part-2; column casing-3; column-4; a probe body-5; a probe head-6; a conical pressure head-7; left body-8; right body-9; locking inclined plane-10; an actuator-11; a first left locking head-12; a first right locking head-13; a first locking knob-14; an outer conical surface locking block-15; a limit pin-16; an external thread head-17; a second locking knob-18; a left locking conical surface-19; a right locking conical surface-20; a second conical surface groove-21; a first through hole-22; a second through hole-23; anti-shear pin-24; inner edge convex-25; a threaded bore-26; anti-drop screw-27; a first conical groove-28; a second left locking head-29; a second right locking head-30; a third locking knob-31; tapered threaded hole-32; an upper osteotomy indicator groove-33; lower osteotomy indicator surface-34; a winged knife-35; a stress dispersion groove-36; a probe outlet-37; distal femur-38.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: the technical scheme is that the invention is a first scheme, as shown in fig. 1-2, the invention is a probe lockable femur measurer, which comprises a measurer body, the measurer body comprises a fixed part 1 and an adjusting part 2, the fixed part 1 is fixed on a osteotomy platform obtained by first osteotomy of a distal end of a femur, the adjusting part 2 can move up and down along the fixed part 1 to drive a probe body 5 to move up and down, the osteotomy amount of a front condyle and a rear condyle is determined according to the indication of a probe, a column 3 is arranged at the upper end of the adjusting part 2, the column 3 and the adjusting part 2 are integrally formed, a column 4 is arranged in the column 3 in an extending manner, the bottom of the column 4 is welded in the column 3, a probe body 5 is arranged at the upper end of the column 4, a conical surface pressure head 7 is arranged at the upper end of the column 4, the column 4 and the conical surface pressure head 7 are integrally formed, the probe body 5 comprises a left side body 8 and a right side body 9, the left side body 8 and the right side body 9 are respectively positioned at two sides of the pressure head 7, the locking inclined plane 10 is arranged on one side of the left body 8 and one side of the right body 9 close to the conical surface pressure head 7, the locking inclined plane 10 and the conical surface pressure head 7 on the left body 8 and the right body 9 are limited mutually, so that the probe body 5 can not realize rotation or tilting in a vertical plane, a small gap is reserved between the lower ends of the left body 8 and the right body 9 and the column barrel 3, so that the probe can realize linear telescopic motion and swing motion in the same horizontal plane, the measurement inaccuracy caused by the rotation or tilting of the probe body 5 is avoided, the probe heads 6 are arranged at one ends of the left body 8 and the right body 9, the left body 8, the right body 9 and the probe heads 6 are integrally formed, the probe head 6 is used for detecting the lowest position of the front condyle osteotomy, the position is judged by the experience of a doctor, and the executing mechanisms 11 are arranged at the ends of the left body 8 and the right body 9 far away from the probe heads 6, the actuating mechanism 11 is used for locking the probe body 5 and the conical pressure head 7, and when the position of the probe head 6 is selected, the probe body 5 can be locked, so that the probe body 5 is prevented from easily shaking to cause inaccurate measurement.

As shown in fig. 2, the actuator 11 includes a left locking head 12, a right locking head 13, a locking knob 14, an outer conical surface locking block 15, a conical surface groove 28, a left locking head 12 is provided at one end of the left body 8 away from the probe head 6, the left locking head 12 and the left body 8 are integrally formed, a right locking head 13 is provided at one end of the right body 9 away from the probe head 6, the right locking head 13 and the right body 9 are integrally formed, a locking knob 14 is sleeved on the left locking head 12 and the right locking head 13, the locking knob 14 is used for locking the left body 8 and the right body 9, an inner threaded hole is provided in the locking knob 14, a columnar structure with a gap is formed between the left locking head 12 and the right locking head 13, an outer thread is provided on the columnar structure, the inner threaded hole is screwed with the outer thread, outer conical surface locking blocks 15 are provided at the middle parts of the left body 8 and the right body 9, and a position of the locking block 28 corresponding to the outer conical surface is provided on the locking block 14.

As shown in fig. 2, a limit pin 16 is inserted into the first locking knob 14, the middle of the limit pin 16 is located inside the first locking knob 14, and the limit pin 16 is located between the external thread and the external conical surface locking block 15, when the first left locking head 12 and the first right locking head 13 move in the direction of extending into or out of the probe body 5 under the screwing motion, the limit pin 16 on the first locking knob 14 interferes with the external thread or the external conical surface locking block 15, so that the first locking knob 14 can be prevented from falling off, the probe body 5 can be prevented from being locked too tightly, and the probe body 5 is prevented from being damaged.

As shown in fig. 1, upper osteotomy indicating grooves 33 are arranged on two sides of the adjusting part 2, lower osteotomy indicating surfaces 34 are arranged on two sides of the fixing part 1, the adjusting part 2 moves to drive the upper osteotomy indicating grooves 33 to move, the distance between the upper osteotomy indicating grooves 33 and the lower osteotomy indicating surfaces 34 is determined, the distance determines the osteotomy amount and the size and the model of the femoral condyle prosthesis, wing knives 35 are arranged in the upper osteotomy indicating grooves 33, the wing knives 35 are matched with the upper osteotomy indicating grooves 33, the anterior condyle osteotomy amount can be further verified on the lateral surfaces of the anterior condyles, the measurement is more accurate, verification on four-in-one osteotomy blocks is not needed, the operation steps are optimized, the operation time is reduced, and the operation risk is reduced, the verification process is that the wing knives 35 are rotated, and if the tip ends of the wing knives 35 can be contacted with the probe head 6, the osteotomy amount and the osteotomy position detected by the probe head 6 are more accurate.

As shown in fig. 7, an elevation angle α exists between the central axis of the probe body 5 and the center axis of the winged knife 35 and the horizontal plane, the degree of the elevation angle α is usually 5 °, and the elevation angle fits the elevation angle of the upper end surface of the femoral condyle prosthesis, so that the osteotomy amount detected by the probe 5 approaches to a theoretical value, and the mismatching between the femoral condyle and the femur is avoided.

As shown in fig. 2, the probe head 6 is provided with a stress dispersion groove 36, and when the left body 8 and the right body 9 approach each other, the stress dispersion groove 36 can disperse the pressure to prevent the probe head 6 from being damaged.

Example 2: the provided technical scheme is that the first scheme of the invention is shown in figures 1, 3 and 4, and the probe lockable femur measurer comprises a measurer body, wherein the measurer body comprises a fixing part 1 and an adjusting part 2, the fixing part 1 is fixed on a osteotomy platform obtained by first osteotomy of the distal end of a femur, the adjusting part 2 can move up and down along the fixing part 1 to drive a probe body 5 to move up and down, the osteotomy amount of a front condyle and a rear condyle is determined according to the indication of a probe, a column casing 3 is arranged at the upper end of the adjusting part 2, the column casing 3 and the adjusting part 2 are integrally formed, an upright column 4 is arranged in the column casing 3 in an extending manner, the bottom of the upright column 4 is welded in the column casing 3, a probe body 5 is arranged at the upper end of the upright column 4, a conical surface pressure head 7 is arranged at the upper end of the upright column 4, the upright column casing 4 and the conical surface pressure head 7 are integrally formed, the probe body 5 comprises a left side body 8 and a right side body 9, the left side body 8 and the right side body 9 are respectively positioned at two sides of the conical surface pressure head 7, the locking inclined plane 10 is arranged on one side of the left body 8 and one side of the right body 9 close to the conical surface pressure head 7, the locking inclined plane 10 and the conical surface pressure head 7 on the left body 8 and the right body 9 are limited mutually, so that the probe body 5 can not realize rotation or tilting in a vertical plane, a small gap is reserved between the lower ends of the left body 8 and the right body 9 and the column barrel 3, so that the probe can realize linear telescopic motion and swing motion in the same horizontal plane, the measurement inaccuracy caused by the rotation or tilting of the probe body 5 is avoided, the probe heads 6 are arranged at one ends of the left body 8 and the right body 9, the left body 8, the right body 9 and the probe heads 6 are integrally formed, the probe head 6 is used for detecting the lowest position of the front condyle osteotomy, the position is judged by the experience of a doctor, and the executing mechanisms 11 are arranged at the ends of the left body 8 and the right body 9 far away from the probe heads 6, the actuating mechanism 11 is used for locking the probe body 5 and the conical pressure head 7, and when the position of the probe head 6 is selected, the probe body 5 can be locked, so that the probe body 5 is prevented from easily shaking to cause inaccurate measurement.

As shown in fig. 3, the actuator 11 includes an external thread head 17, a second locking knob 18, a left locking conical surface 19, a right locking conical surface 20, a second conical surface groove 21, one end of the right body 9 far away from the probe head 6 is provided with the external thread head 17, the external thread head 17 and the right body 9 are integrally formed, the external thread head 17 is provided with the second locking knob 18 on the external thread head 17, the second locking knob 18 is used for locking the space between the left body 8 and the right body 9, a threaded hole is formed in the second locking knob 18, the external thread head 17 is screwed in the threaded hole, one end of the left body 8 far away from the probe head 6 is provided with a left locking conical surface 19, a position on the right body 9 corresponding to the left locking conical surface 19 is provided with the right locking conical surface 20, the threaded hole is close to the left locking conical surface 19, and one end of the right locking conical surface 20 is provided with the second conical surface groove 21.

As shown in fig. 3, a first through hole 22 is formed in the left body 8 at the position of the left locking conical surface 19, a second through hole 23 is formed in the right body 9 at the position of the right locking conical surface 20, a shearing prevention pin 24 extends into the first through hole 22 and the second through hole 23, the shearing prevention pin 24 is tightly matched with the second through hole 23, a gap is reserved between the shearing prevention pin 24 and the first through hole 22, when the left body 8 and the right body 9 approach each other, the gap between the shearing prevention pin 24 and the first through hole 22 is gradually reduced, interference occurs between the shearing prevention pin 24 and the second through hole, the shearing prevention pin 24 can limit the left body 8 and the right body 9 to continue approaching at the moment, so that shearing action can be prevented from occurring between the left body 8 and the right body 9, and the probe body 5 is prevented from being damaged.

As shown in fig. 4, an inner protrusion 25 is disposed in the threaded hole, a threaded hole 26 is disposed at an end of the external thread head 17 away from the right body 9, an anti-drop screw 27 is screwed in the threaded hole 26, and a screw head of the anti-drop screw 27 is lapped on the inner protrusion 25 to prevent the second locking knob 18 from dropping off.

As shown in fig. 1, upper osteotomy indicating grooves 33 are formed on two sides of the adjusting part 2, lower osteotomy indicating surfaces 34 are formed on two sides of the fixing part 1, the adjusting part 2 moves to drive the upper osteotomy indicating grooves 33 to move, the distance between the upper osteotomy indicating grooves 33 and the lower osteotomy indicating surfaces 34 is determined, the distance determines the osteotomy amount and the size and the model of the femoral condyle prosthesis, wing knives 35 are arranged in the upper osteotomy indicating grooves 33, the wing knives 35 are matched with the upper osteotomy indicating grooves 33, the anterior condyle osteotomy amount can be further verified on the lateral surfaces of the anterior condyles, the measurement is more accurate, verification on a four-in-one osteotomy block is not needed, the operation steps are optimized, the operation time is reduced, and the operation risk is reduced, the verification process is that the wing knives 35 are rotated, and if the tips of the wing knives 35 can be contacted with the probe head 6, the osteotomy amount and the osteotomy position detected by the probe head 6 are more accurate.

As shown in fig. 3, the probe head 6 is provided with a stress dispersion groove 36, when the left body 8 and the right body 9 approach each other, the stress dispersion groove 36 can disperse pressure to prevent the probe head 6 from being damaged, one end of the probe body 5 close to the probe head 6 is further provided with a probe outlet 37, the stress dispersion groove 36 is communicated with the probe outlet 37, and the conical indenter 7 can be taken out of the probe body 5 through the probe outlet 37, so that the probe body 5 can be detached.

Example 3: the provided technical scheme is that the first scheme of the invention is shown in figures 1 and 5, and the probe lockable femur measurer comprises a measurer body, wherein the measurer body comprises a fixing part 1 and an adjusting part 2, the fixing part 1 is fixed on a osteotomy platform obtained by first osteotomy of the distal end of a femur, the adjusting part 2 can move up and down along the fixing part 1 to drive a probe body 5 to move up and down, the osteotomy amount of a front condyle and a rear condyle is determined according to the indication of a probe, a column 3 is arranged at the upper end of the adjusting part 2, the column 3 and the adjusting part 2 are integrally formed, an upright column 4 extends into the column 3, the bottom of the upright column 4 is welded in the column 3, a probe body 5 is arranged at the upper end of the upright column 4, a conical surface pressure head 7 is arranged at the upper end of the upright column 4, the upright column 4 and the conical surface pressure head 7 are integrally formed, the probe body 5 comprises a left side body 8 and a right side body 9, the left side body 8 and the right side body 9 are respectively positioned at two sides of the conical surface pressure head 7, the locking inclined planes 10 are arranged on one sides of the left body 8 and the right body 9 close to the conical pressure head 7, the locking inclined planes 10 on the left body 8 and the right body 9 and the conical pressure head 7 are mutually limited, so that the probe body 5 can not realize rotation or tilting in a vertical plane, a small gap is reserved between the lower ends of the left body 8 and the right body 9 and the column barrel 3, so that the probe can realize linear telescopic motion and swinging motion in the same horizontal plane, the measurement inaccuracy caused by the rotation or tilting of the probe body 5 is avoided, the probe heads 6 are arranged at one ends of the left body 8 and the right body 9, the left body 8, the right body 9 and the probe heads 6 are integrally formed, the probe head 6 is used for detecting the lowest position of a front condyle osteotomy, the position is judged by the experience of a doctor, and the executing mechanisms 11 are arranged at the ends of the left body 8 and the right body 9 far away from the probe heads 6, the actuating mechanism 11 is used for locking between the probe body 5 and the conical surface pressure head 7 when the position of the probe head 6 is selected, the probe body 5 can be locked, and inaccurate measurement caused by the fact that the probe body 5 is easily shaken is prevented.

As shown in fig. 5, the actuator 11 includes a second left locking head 29, a second right locking head 30, a third locking knob 31, and a tapered threaded hole 32, a second left locking head 29 is disposed at an end of the left body 8 away from the probe head 6, the second left locking head 29 and the left body 8 are integrally formed, a second right locking head 30 is disposed at an end of the right body 9 away from the probe head 6, the right body 9 and the second right locking head 30 are integrally formed, the third locking knob 31 is sleeved on the second left locking head 29 and the second right locking head 30, the tapered threaded hole 32 is disposed in the third locking knob 31, the second left locking head 29 and the second right locking head 30 jointly form a gapped cone structure, an external thread is disposed on the cone structure, and the tapered threaded hole 32 is in threaded connection with the external thread.

As shown in fig. 5, upper osteotomy indicating grooves 33 are formed on two sides of the adjusting part 2, lower osteotomy indicating surfaces 34 are formed on two sides of the fixing part 1, the adjusting part 2 moves to drive the upper osteotomy indicating grooves 33 to move, the distance between the upper osteotomy indicating grooves 33 and the lower osteotomy indicating surfaces 34 is determined, the distance determines the osteotomy amount and the size and the model of the femoral condyle prosthesis, wing knives 35 are arranged in the upper osteotomy indicating grooves 33, the wing knives 35 are matched with the upper osteotomy indicating grooves 33, the anterior condyle osteotomy amount can be further verified on the lateral surfaces of the anterior condyles, the measurement is more accurate, verification on a four-in-one osteotomy block is not needed, the operation steps are optimized, the operation time is reduced, and the operation risk is reduced, the verification process is that the wing knives 35 are rotated, and if the tips of the wing knives 35 can be contacted with the probe head 6, the osteotomy amount and the osteotomy position detected by the probe head 6 are more accurate.

As shown in fig. 7, an elevation angle α exists between the central axes of the probe body 5 and the winged knife 35 and the horizontal plane, the degree of the elevation angle α is usually 5 °, and the elevation angle is matched with the elevation angle of the upper end surface of the femoral condyle prosthesis, so that the osteotomy amount detected by the probe 5 is close to a theoretical value, and mismatching between the femoral condyle and the femur is avoided.

As shown in fig. 5, the probe head 6 is provided with a stress dispersion groove 36, and when the left body 8 and the right body 9 approach each other, the stress dispersion groove 36 can disperse the pressure to prevent the probe head 6 from being damaged.

The working principle of the invention is as follows: referring to fig. 6, the fixing portion 1 and the adjusting portion 2 are fixed on the osteotomy platform obtained by the first osteotomy of the distal end 29 of the femur, that is, the posterior condylar fastening piece extends into the posterior condyle, the fixing portion 1 can be further fixed on the osteotomy platform through a screw hole and a screw, then the probe body 5 is adjusted, the probe body 5 drives the adjusting portion 2 to move up and down, when the probe head 6 detects the lowest position of the anterior condyle osteotomy, the distance between the upper osteotomy indicating groove 33 and the lower osteotomy indicating surface 34 determines the osteotomy amount and the size and the model of the femoral condyle prosthesis, after the adjustment is completed, the executing mechanism 11 is used to lock the probe body 5, and then the winged knife 35 is used to cooperate with the upper osteotomy indicating groove 33 to verify the anterior condyle osteotomy amount again, that is the winged knife 35, if the tip of the winged knife 35 can contact with the probe head 6, it is shown that the osteotomy amount and the osteotomy position detected by the probe head 6 are more accurate;

the principle of the actuator 11 in the first scheme is as follows: manually rotating the first locking knob 14 to enable the first left locking head 12 and the first right locking head 13 to move relatively in the direction of extending into the first locking knob 14 under the action of screw rotation, further driving the outer conical surface locking block 15 to move in the direction of extending into the first conical surface groove 28, and driving the left body 8 and the right body 9 to approach each other under the action of the conical surface structures of the outer conical surface locking block 15 and the first conical surface groove 28, so that the left body 8, the right body 9 and the conical surface pressure head 7 are locked;

the principle of the actuator 11 in the second scheme is as follows: manually rotating the second locking knob 18 to drive the external thread head 17 to move relatively in the direction of extending into the second locking knob 18, and further driving the left locking conical surface 19 and the right locking conical surface 20 to move in the direction of extending into the second conical surface groove 21, and under the action of the conical surface structures of the left locking conical surface 19, the right locking conical surface 20 and the second conical surface groove 21, driving the left body 8 and the right body 9 to approach each other, so that the left body 8, the right body 9 and the conical surface pressure head 7 are locked;

the principle of the actuator 11 in the third scheme is as follows: the third locking knob 31 is manually rotated, so that the second left locking head 29 and the second right locking head 30 do relative movement in the direction extending into the third locking knob 31 under the rotation of the screw, the left body 8 and the right body 9 are driven to approach each other under the action of the tapered threaded hole 32 and the conical surface structure of the cone structure, and the left body 8, the right body 9 and the conical surface pressure head 7 are locked.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a probe lockable thighbone caliber, includes the caliber body, its characterized in that: the measurer comprises a measurer body and a measuring device, wherein the measurer body comprises a fixing part (1) and an adjusting part (2), a column casing (3) is arranged at the upper end of the adjusting part (2), an upright column (4) extends into the column casing (3), a probe body (5) is arranged at the upper end of the upright column (4), a conical surface pressure head (7) is arranged at the upper end of the upright column (4), the probe body (5) comprises a left side body (8) and a right side body (9), the left side body (8) and the right side body (9) are respectively positioned at two sides of the conical surface pressure head (7), locking inclined planes (10) are respectively arranged at one sides of the left side body (8) and the right side body (9) close to the conical surface pressure head (7), a probe head (6) is connected with one end of the left side body (8) and one end of the right side body (9), and an executing mechanism (11) is arranged at one end of the left side body (8) and the right side body (9) far away from the probe head (6);

the executing mechanism (11) comprises a first left locking head (12), a first right locking head (13), a first locking knob (14), an outer conical surface locking block (15) and a first conical surface groove (28), wherein the first left locking head (12) is arranged at one end, away from the probe head (6), of the left side body (8), the first right locking head (13) is arranged at one end, away from the probe head (6), of the right side body (9), the first locking knob (14) is sleeved on the first left locking head (12) and the first right locking head (13), an inner threaded hole is formed in the first locking knob (14), the first left locking head (12) and the first right locking head (13) jointly form a gap columnar structure, outer threads are arranged on the columnar structure, the inner threaded hole is in threaded connection with the outer threads, the outer conical surface locking block (15) is arranged in the middle of the left side body (8) and the right side body (9), and the first conical surface groove (28) is arranged at the position, corresponding to the outer locking block (15), on the first locking knob (14);

the bone cutting device is characterized in that upper bone cutting indication grooves (33) are formed in two sides of the adjusting portion (2), lower bone cutting indication surfaces (34) are formed in two sides of the fixing portion (1), and wing knives (35) are arranged in the upper bone cutting indication grooves (33).

2. The probe lockable femurometer according to claim 1, wherein: a limiting pin (16) is inserted into the first locking knob (14), the middle of the limiting pin (16) is located on the inner side of the first locking knob (14), and the limiting pin (16) is located between the external thread and the outer conical surface locking block (15).

3. The probe lockable femurometer according to claim 1 or 2, wherein: an elevation angle alpha exists between the horizontal plane and the central axes of the probe body (5) and the winged knife (35).

4. The utility model provides a probe lockable thighbone caliber, includes the caliber body, its characterized in that: the measuring device comprises a measurer body and a measuring device body, wherein the measurer body comprises a fixing part (1) and an adjusting part (2), a column casing (3) is arranged at the upper end of the adjusting part (2), a column (4) extends into the column casing (3), a probe body (5) is arranged at the upper end of the column (4), a conical surface pressure head (7) is arranged at the upper end of the column (4), the probe body (5) comprises a left side body (8) and a right side body (9), the left side body (8) and the right side body (9) are respectively positioned at two sides of the conical surface pressure head (7), locking inclined planes (10) are respectively arranged at one sides of the left side body (8) and the right side body (9) close to the conical surface pressure head (7), a probe head (6) is connected to one end of the left side body (8) and one end of the right side body (9), which are far away from the probe head (6), and an executing mechanism (11) is arranged at one end of the left side body (8) and the right side body (9);

the executing mechanism (11) comprises an external thread head (17), a second locking knob (18), a left locking conical surface (19), a right locking conical surface (20) and a second conical surface groove (21), wherein the external thread head (17) is arranged at one end, far away from the probe head (6), of the right body (9), the second locking knob (18) is arranged on the external thread head (17), a threaded hole is formed in the second locking knob (18), the external thread head (17) is screwed in the threaded hole, a left locking conical surface (19) is arranged at one end, far away from the probe head (6), of the left body (8), a right locking conical surface (20) is arranged at a position, corresponding to the left locking conical surface (19), of the right body (9), and the second conical surface groove (21) is arranged at one end, close to the left locking conical surface (19) and the right locking conical surface (20), of the threaded hole;

5. The probe lockable femur measurer according to claim 4, wherein: the position that lies in left side locking conical surface (19) on left side body (8) is provided with through-hole (22) No. one, the position that lies in right side locking conical surface (20) on right side body (9) is provided with through-hole (23) No. two, stretch into in through-hole (22) and No. two through-holes (23) and be provided with and prevent shearing pin (24), prevent shearing pin (24) and No. two through-holes (23) tight fit, leave the space between preventing shearing pin (24) and through-hole (22).

6. The probe lockable femurometer according to claim 4, wherein: the threaded hole is internally provided with an inner edge protrusion (25), one end, far away from the right body (9), of the external thread head (17) is provided with a threaded hole (26), an anti-falling screw (27) is screwed in the threaded hole (26) at one end of the external thread head (17), and a screw head of the anti-falling screw (27) is lapped on the inner edge protrusion (25).

7. The probe lockable femur measurer according to any one of claims 4 to 6, wherein: an elevation angle alpha exists between the horizontal plane and the central axes of the probe body (5) and the winged knife (35).

8. The probe lockable femur measurer according to any one of claims 4 to 6, wherein: stress dispersion groove (36) have been seted up on probe head (6), probe take-out mouth (37) have still been seted up to the one end that probe body (5) are close to probe head (6), stress dispersion groove (36) and probe take-out mouth (37) intercommunication.

9. The utility model provides a probe lockable thighbone caliber, includes the caliber body, its characterized in that: the measuring device comprises a measurer body and a measuring device body, wherein the measurer body comprises a fixing part (1) and an adjusting part (2), a column casing (3) is arranged at the upper end of the adjusting part (2), a column (4) extends into the column casing (3), a probe body (5) is arranged at the upper end of the column (4), a conical surface pressure head (7) is arranged at the upper end of the column (4), the probe body (5) comprises a left side body (8) and a right side body (9), the left side body (8) and the right side body (9) are respectively positioned at two sides of the conical surface pressure head (7), locking inclined planes (10) are respectively arranged at one sides of the left side body (8) and the right side body (9) close to the conical surface pressure head (7), a probe head (6) is connected to one end of the left side body (8) and one end of the right side body (9), which are far away from the probe head (6), and an executing mechanism (11) is arranged at one end of the left side body (8) and the right side body (9);

the executing mechanism (11) comprises a second left locking head (29), a second right locking head (30), a third locking knob (31) and a taper threaded hole (32), wherein the second left locking head (29) is arranged at one end, away from the probe head (6), of the left body (8), the second right locking head (30) is arranged at one end, away from the probe head (6), of the right body (9), the second right locking head (30) is arranged at one end, away from the probe head (6), of the right body, the third locking knob (31) is sleeved on the second left locking head (29) and the second right locking head (30), the taper threaded hole (32) is formed in the third locking knob (31), the second left locking head (29) and the second right locking head (30) jointly form a gapped cone structure, an external thread is arranged on the cone structure, and the taper threaded hole (32) is in threaded connection with the external thread;

10. The probe lockable femurometer according to claim 9, wherein: an elevation angle alpha exists between the central axes of the probe body (5) and the winged knife (35) and the horizontal plane.