CN214342811U

CN214342811U - Tibial plateau replacement force line detection device

Info

Publication number: CN214342811U
Application number: CN202023197101.2U
Authority: CN
Inventors: 张鹏; 孔杰; 杜建春; 林涛; 万连平
Original assignee: Qilu Hospital of Shandong University Qingdao
Current assignee: Qilu Hospital of Shandong University Qingdao
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-10-08
Anticipated expiration: 2030-12-24

Abstract

The utility model provides a tibial plateau replacement is with power line detection device, including the locating plate, the handle with mark the pole, after covering the bottom surface and the shin bone osteotomy plane subsides of locating plate, the adjustment locating plate, make the handle forward, and mark the pole and be located the dead ahead of shin bone, the light that sets up at mark pole inside illuminator send at this moment throws from the distal end of demarcating the pole and one side of orientation shin bone outwards, the place ahead of hitting at the shin bone is just hit to the light of throwing, the art person can regard as the reference to adjust low limbs power line through observing the light of hitting on the shin bone, compare with prior art, can not appear because of measuring staff apart from ankle joint far away, be subject to the condition that the shin bone dead ahead was observed to the operation scene, and even if from the side observation, the error also can not appear. The problem of smoothness of the measuring rod can not occur, and the problem that the measuring rod is too long or too short due to different lengths of the tibia of different patients can not occur.

Description

Tibial plateau replacement force line detection device

Technical Field

The utility model relates to an artifical knee joint replacement technical field, concretely relates to tibial plateau is replaced with power line detection device.

Background

Knee replacement is the replacement and reconstruction of diseased or injured articular surfaces with artificial biomaterials aimed at removing the lesions to relieve symptoms, eliminate pain, restore and improve joint function and improve quality of life. Modern artificial knee joint replacement surgery begins in the last 60 th century and becomes an ideal and effective treatment scheme for treating advanced joint diseases through continuous development of half a century. In recent years, with the development of scientific technology, the knee joint replacement is greatly improved and enhanced from the surgical technology to the prosthesis design concept, and is accepted by more and more doctors and patients.

An important purpose of artificial knee joint replacement is to reconstruct and recover the lower limb force line, which is easy to cause the limited knee joint movement and the pain in front of the knee due to poor alignment; prosthesis instability, loosening and wear; patellofemoral joint dysfunction, and the like. Currently, lateral femoral osteotomies of knee surgery are used by most surgeons because of the greater accuracy of femoral intramedullary positioning for guiding distal femoral osteotomies. The femur intramedullary positioning is to determine the femur valgus angle by preoperatively observing the X-ray film of the leg of a patient, determine the external rotation angle by taking the condylar passing line and the front and back axes as references in the operation, and observe whether the femur force line is accurate by using the force line measuring rod.

And tibial osteotomies are mostly performed by means of extramedullary positioning. Because the extramedullary location carries out the line of force through the locating lever and to the line, do not have the damage to the shin bone, be fit for most patients and use. Intramedullary location is to squeeze the intramedullary location pole into the inside of shin bone marrow cavity, damages tibial structure, may increase fat embolism and venous thromboembolism's risk, and the patient that the sclerotin is not good arouses complication such as later stage shin bone fracture easily. Therefore, most surgeons choose extramedullary positioning during the procedure.

The external tibial bone marrow positioning device in the prior art is shown in fig. 1-2 and comprises a measuring flat plate 01, a measuring handle 02 connected with the measuring flat plate 01, a through hole 03 arranged on the measuring handle 02, a measuring rod 04 penetrating through the through hole 03 for comparing a calibration force line, wherein the axis direction of the through hole 03 is perpendicular to a plane where a bottom surface of the measuring flat plate 01, which is used for being attached to a cutting surface, is located. Such tibial extramedullary positioning devices of the prior art have at least the following technical drawbacks: 1) an operator needs to observe the relation between the measuring rod 04 and a tibial crest and the relation between the measuring rod 04 and an ankle joint from the front, but when the measuring rod 04 is close to the ankle joint, the measuring rod 04 is often far away from the ankle joint, so that the operator is limited in that the operator cannot observe from the front of the tibia frequently in an operation scene, and obvious errors can appear when observing from the side; 2) in the operation process, the measuring rod 04 is easy to adhere to human tissues, and when the measuring rod 04 adhered with the human tissues slides downwards along the through hole 03 on the measuring handle 02, the situations of poor astringency and smoothness are very easy to occur, and the operation convenience is poor; 3) different patients' shin bone length often is different, and measuring stick 04 can not change along with the length of shin bone, often appears measuring stick 04 overlength and influences the operation, and the inaccurate drawback of short measurement.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the shin bone marrow external positioning device among the prior art and mainly relying on the measuring stick to mark the line of force, and in the position that is close to ankle joint, the measuring stick often is far away apart from ankle joint, under the operation scene of great majority, the operation person often can not follow the observation of the dead ahead of shin bone, leads to awkward technical defect to a shin bone line of force verifying attachment that can solve above-mentioned defect is provided.

Therefore, the utility model provides a tibial plateau replacement is with line of force detection device, include:

the positioning plate is provided with a bottom surface which is suitable for being attached to the tibia osteotomy plane;

the handle is fixedly connected with the positioning plate; after the bottom surface is attached to the tibia osteotomy plane, the handle is positioned right in front of the positioning plate;

the calibration rod is arranged on the handle, and a light-emitting device is arranged in the calibration rod; the light emitted by the light-emitting device can be projected outwards from the far end of the calibration rod and one side facing the tibia, the plane of the projected light is perpendicular to the plane of the bottom surface, and the projected light penetrates through the positioning point of the bottom surface and is used for being aligned with the specific position of the osteotomy plane.

As a preferable scheme, the positioning point is a symmetrical center of the bottom surface.

As a preferable aspect, the light emitting device includes:

the light-emitting piece is fixedly arranged in the calibration rod and emits light after being electrified;

the power supply is fixedly arranged inside the calibration rod and supplies power to the luminous element;

and the switch is arranged on a circuit connecting the luminous piece and the power supply and is used for controlling the on-off.

As a preferable scheme, a first slit is formed in one side of the calibration rod, which faces the positioning plate, and the first slit extends along the axial direction of the calibration rod.

As a preferred scheme, a second gap is formed in the far end of the calibration rod, and the plane where the first gap is located and the plane where the second gap is located are coplanar.

Preferably, the first slit and the second slit are arranged to communicate with each other.

Preferably, a reflective mirror is disposed inside the calibration bar opposite to the first slit and/or the second slit.

As a preferred scheme, the handle is provided with a mounting hole, and the calibration rod passes through the mounting hole and is mounted on the handle.

Preferably, the switch is provided on a portion of the calibration lever located above the handle.

Preferably, the thickness of the handle is gradually increased to a certain thickness along the direction away from the positioning plate and then is kept unchanged.

The technical scheme provided by the utility model, following advantage has:

1. the utility model discloses a line of force detection device is used in tibial plateau replacement, the locating plate comprises a positioning plate, the handle with mark the pole, after covering the bottom surface and the shin bone osteotomy plane subsides of locating plate, the adjustment locating plate, make the handle forward, and mark the pole and be located the dead ahead of shin bone, the light that sets up at the inside illuminator of mark pole sent at this moment is outwards thrown from one side of marking the distal end of pole and orientation shin bone, the place ahead of shin bone is just beaten to the light of throwing, the art person can regard as the reference to adjust low limbs line of force through observing the light of beating on the shin bone, compare with prior art, can not appear because of measuring stick distance ankle joint is far away, be subject to the condition that the dead ahead of shin bone was observed to the operation scene, and even if observe from the side, the error also can not appear. The problem of smoothness of the measuring rod can not occur, and the problem that the measuring rod is too long or too short due to different lengths of the tibia of different patients can not occur.

2. The utility model discloses a shin bone platform replacement power line detection device, the setpoint is the center of symmetry of bottom surface, when pasting the locating plate and cover on the shin bone cuts the bone plane, the position of adjustment locating plate makes its center of symmetry put with the shin bone cut the planar special position of bone align can, it is more convenient to operate.

3. The utility model discloses a shin bone platform replacement is with line of force detection device, illuminator include illuminating part, power and switch, and the illuminating part can be colored illuminating part, if blue, purple etc. the light of sending is beaten more striking, easy discernment on human tissue back.

4. The utility model discloses a shin bone platform replacement power line detection device, the first gap has been seted up to one side towards the locating plate of demarcation pole, and the light that the illuminating part sent beats behind first gap and forms a mark line, convenient discernment on human tissue.

5. The utility model discloses a tibial plateau replacement is with line of force detection device, the second gap has been seted up to the distal end of demarcation pole, first gap place plane and second gap place plane coplane, when light beat the length on the human tissue through first gap not enough, light can beat the farther position of human tissue through the second gap to adapt to the limbs that shin bone length is different.

6. The utility model discloses a tibial plateau replacement power line detection device, first gap and second gap intercommunication set up, and the light that the illuminating part sent like this can form a longer mark line on human tissue through first gap and second gap back.

7. The utility model discloses a tibial plateau replacement is with power line detection device, in the inside of marking the pole relative with first gap and/or second gap, be equipped with the reflector, the light that the illuminating part sent, partly directly pass first gap and second gap and throw away, still partly can be played on the reflector, pass first gap and/or second gap once more after the reflector reflection and throw away, make the line of marking of beating on human tissue clearer.

8. The utility model discloses a line of force detection device is used in tibial plateau replacement, calibration rod installs on the handle through the mounting hole that sets up on the handle, the switch is located the part of calibration rod that is located the handle top, is convenient for press the operation; along the direction of keeping away from the locating lever, the thickness of handle keeps unchangeable after increasing gradually, and thicker handle can increase intensity firstly, and the direction that can restrict the locating lever is vertical not squint secondly.

Drawings

In order to more clearly illustrate the technical solutions in the prior art or the embodiments of the present invention, the drawings used in the description of the prior art or the embodiments are briefly introduced below.

Fig. 1 is a perspective view of a prior art tibial extramedullary positioning device.

Fig. 2 is another perspective view of fig. 1.

Fig. 3 is a perspective view of the force line detection device for tibial plateau replacement of the present invention.

Fig. 4 is another perspective view of fig. 3.

Fig. 5 is a cross-sectional view of fig. 3.

Fig. 6 is a perspective view of fig. 5.

Reference numerals: 01. measuring the flat plate; 02. a measuring handle; 03. a through hole; 04. a measuring rod; 1. positioning a plate; 11. a bottom surface; 2. a handle; 21. mounting holes; 3. a calibration rod; 31. a first slit; 32. a second slit; 4. a light emitting member; 5. a power source; 6. a switch; 7. a mirror.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings.

Examples

The present embodiment provides a force line detection device for tibial plateau replacement, as shown in fig. 3-4, comprising a positioning plate 1, wherein the positioning plate 1 has a bottom surface 11 adapted to be attached to a tibial osteotomy plane; a handle 2 is connected with the positioning plate 1; when the bottom surface 11 of the positioning plate 1 is attached to the tibia osteotomy plane in the operation, the angle of the positioning plate 1 is adjusted, so that the handle 2 can be rotated to the right front of the tibia.

The device also comprises a calibration rod 3 which is arranged on the handle 2 and is internally provided with a light-emitting device. The calibration rod 3 is provided with a gap, light emitted by the light-emitting device can be projected outwards to the tibia from the gap, the plane of the projected light is perpendicular to the plane of the bottom surface 11, and the projected light passes through a positioning point of the bottom surface 11 and is used for aligning with a specific position of the osteotomy plane. The operator can adjust the lower limb force line by observing the light rays striking the tibia as a reference.

In this embodiment, the positioning point is the symmetric center of the bottom surface 11, and when the positioning plate 1 is attached to the tibial osteotomy plane, the position of the positioning plate 1 is adjusted to align the symmetric center of the positioning plate with the specific position of the tibial osteotomy plane, which is convenient to operate.

As shown in fig. 5-6, the light-emitting device includes a light-emitting member 4 fixedly installed inside the calibration bar 3, and can emit light when energized; the power supply 5 is also fixedly arranged inside the calibration rod 3 and supplies power to the luminous element 4; the LED lamp also comprises a switch 6 which is arranged on a circuit connecting the luminous element 4 and the power supply 5 and is used for controlling the on-off.

Preferably, the illuminating element 4 can be a illuminating element capable of emitting more obvious light, such as blue light, violet light, etc., and when the light with the color is irradiated on human tissues, the illuminating element is more striking and easy to observe.

As shown in fig. 3-4, a first slit 31 is opened on a side of the calibration rod 3 facing the positioning plate 1, and the first slit 31 extends along an axial direction of the calibration rod 3. The distal end of the calibration rod 3 is provided with a second gap 32, and the plane of the first gap 31 is coplanar with the plane of the second gap 32.

The light emitted by the luminous element 4 passes through the first gap 31 and then hits on the human tissue to form a marking line, which is convenient for identification; after passing through the second aperture 32, the limb can be struck on body tissue at a more distant location, thereby accommodating limbs with longer tibial lengths. The first 31 and second 32 slits are coplanar due to the need to calibrate the lower limb force line.

Preferably, the first slit 31 and the second slit 32 are communicated, and a longer identification line is marked on the tibia after the light emitted by the light-emitting member 4 passes through the first slit 31 and the second slit 32, so as to calibrate the lower limb force line.

As shown in fig. 6, a mirror 7 is provided inside the calibration rod 3 facing the first slit 31. The light emitted by the light-emitting member 4 partially passes through the first slit 31 and the second slit 32 and is projected, and the other part of the light is reflected by the reflective mirror 7 and then passes through the first slit 31 and/or the second slit 32 again and is projected, so that the marking line on the human tissue can be clearer.

The handle 2 is provided with a mounting hole 21, and the calibration rod 3 penetrates through the mounting hole 21 and is mounted on the handle 2. The part of the calibration rod 3 above the handle 2 is provided with the switch 6, so that the pressing operation is convenient.

The thickness of the handle 2 is gradually increased to a certain thickness along the direction away from the positioning plate 1 and then is kept unchanged; the thicker handle 2 can increase the strength and limit the vertical non-deflection of the orientation of the positioning rod 3.

The use method of the tibial plateau replacement force line detection device in the embodiment is as follows:

after the tibia osteotomy plane is cut, the bottom surface 11 of the positioning plate 1 is attached to the tibia osteotomy plane, so that the symmetrical center of the positioning plate 1 is aligned with the specific position of the tibia osteotomy plane;

the angle of the positioning plate 1 is adjusted, so that the handle 2 and the calibration rod 3 are positioned right in front of the tibia;

the switch 6 is pressed, the power supply 5 is switched on, the luminous piece 4 emits light, and light emitted by the luminous piece 4 passes through the first gap 31 and the second gap 32 and hits human tissues (such as shin bones or skin outside the shin bones) to be used as a reference for calibrating the lower limb force line of an operator;

after the use, the switch 6 is pressed again, the power supply 5 is turned off, and the positioning plate 1 is taken down from the tibia osteotomy plane.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a tibial plateau replacement power line detection device which characterized in that includes:

the positioning plate (1) is provided with a bottom surface (11) suitable for being attached to a tibia osteotomy plane;

the handle (2) is fixedly connected with the positioning plate (1); after the bottom surface (11) is attached to the tibia osteotomy plane, the handle (2) is positioned right in front of the positioning plate (1);

the calibration rod (3) is arranged on the handle (2), and a light-emitting device is arranged in the calibration rod; the light emitted by the light-emitting device can be projected outwards from the far end of the calibration rod (3) and the side facing the tibia, the plane of the projected light is perpendicular to the plane of the bottom surface (11), and the projected light passes through the positioning point of the bottom surface (11) for aligning with the specific position of the osteotomy plane.

2. The tibial plateau replacement force line detection device of claim 1, wherein: the positioning point is the symmetry center of the bottom surface (11).

3. The tibial plateau replacement force line detection device of claim 1, wherein: the light emitting device includes:

the luminous piece (4) is fixedly arranged in the calibration rod (3) and emits light after being electrified;

the power supply (5) is fixedly arranged inside the calibration rod (3) and supplies power to the luminous piece (4);

and the switch (6) is arranged on a circuit connecting the luminous piece (4) and the power supply (5) and is used for controlling the on-off.

4. The tibial plateau replacement force line detection device of claim 3, wherein: first gap (31) have been seted up towards one side of calibration pole (3) locating plate (1), first gap (31) are followed the axial extension of calibration pole (3).

5. The tibial plateau replacement force line detection device of claim 4, wherein: the far end of the calibration rod (3) is provided with a second gap (32), and the plane of the first gap (31) and the plane of the second gap (32) are coplanar.

6. The tibial plateau replacement force line detection device of claim 5, wherein: the first slit (31) and the second slit (32) are arranged in a communicating manner.

7. The tibial plateau replacement force line detection device of claim 6, wherein: a reflective mirror (7) is arranged inside the calibration rod (3) opposite to the first gap (31) and/or the second gap (32).

8. The tibial plateau replacement force line detection device of claim 3, wherein: the handle (2) is provided with a mounting hole (21), and the calibration rod (3) penetrates through the mounting hole (21) and is mounted on the handle (2).