CN210019693U - Lower limb force line measuring device in artificial total knee joint replacement - Google Patents
Lower limb force line measuring device in artificial total knee joint replacement Download PDFInfo
- Publication number
- CN210019693U CN210019693U CN201920450324.3U CN201920450324U CN210019693U CN 210019693 U CN210019693 U CN 210019693U CN 201920450324 U CN201920450324 U CN 201920450324U CN 210019693 U CN210019693 U CN 210019693U
- Authority
- CN
- China
- Prior art keywords
- force line
- laser
- lower limb
- measuring head
- rotating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model discloses a lower limb force line measuring device in artificial total knee joint replacement, including the clearance piece that is used for inserting in the osteotomy face clearance, the tip fixedly connected with clearance piece handle of clearance piece, the free end coaxial coupling of clearance piece handle has the measuring head, the laser emission module is installed to the free end of measuring head, the laser emission module is used for when the clearance piece inserts in the osteotomy face clearance, sends visible laser to the top or the below of clearance piece to acquire patient's lower limb force line through the drop point of visible laser, and then judges whether the osteotomy face is perpendicular with lower limb force line; the laser ray can replace a metal force line measuring rod to detect the osteotomy face, so that the operation time of using the metal force line measuring rod is saved, and the accuracy of angle measurement is greatly improved.
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of medical instrument, especially, relate to a low limbs force line measuring device in artifical total knee joint replacement art.
[ background of the invention ]
In the artificial total knee joint replacement, partial osteotomy is needed to be carried out on the femur and the tibia, whether an osteotomy surface is perpendicular to a lower limb force line is measured through a force line measuring instrument after the osteotomy, so that the recovery of the lower limb force line after the operation is ensured, the normal physiological motion state of the joint is recovered, the abrasion of the artificial joint is delayed, and finally the artificial knee joint prosthesis is arranged in a gap between the osteotomy surfaces, so that the operation is completed.
The traditional force line measuring instrument generally comprises a gap block and a gap block handle, wherein a through hole is formed in the free end of the gap block handle, a metal force line measuring rod is inserted into the through hole, and when the upper end of the metal force line measuring rod points to the center of the femoral head and the lower end of the metal force line measuring rod points to the center of an ankle joint, the osteotomy angle is proved to be good. However, if the metal force line measuring rod is too short, the force line cannot be accurately evaluated, and if the metal force line measuring rod is too long, the metal force line measuring rod is inconvenient to package and sterilize, bending is more easily caused in the packaging process, operation in the operation is inconvenient, and the traditional force line measuring instrument cannot accurately read the deviation angle value of the osteotomy, only can evaluate whether the osteotomy is inverted inside and outside, and cannot perform quantitative measurement.
[ Utility model ] content
The utility model aims at providing a low limbs force line measuring device in artifical total knee joint replacement art no longer needs metal force line measuring stick, has saved the time of inserting the through-hole with metal force line measuring stick, and then has saved the operation time.
The utility model adopts the following technical scheme: the utility model provides a low limbs force line measuring device in artifical total knee joint replacement art, including being arranged in inserting the clearance piece in the osteotomy face clearance, the tip fixedly connected with clearance piece handle of clearance piece, the free end coaxial coupling of clearance piece handle has the measuring head, laser emission module is installed to the free end of measuring head, laser emission module is arranged in inserting the osteotomy face clearance when the clearance piece, to the top or the below transmission visible laser of clearance piece, with the lower limbs force line of patient is acquireed to the drop point through visible laser, and then judge whether the osteotomy face is perpendicular with lower limbs force line.
Furthermore, the lower part of the measuring head is provided with an arc-shaped bulge, and the arc-shaped bulge extends from the connecting end of the measuring head to the free end;
the middle part of the free end of the measuring head extends outwards to form a laser module rotating shaft, and the rotating shaft and the arc-shaped bulge part are coaxial; the cover is equipped with rotatable ring in the laser module pivot, is connected with the laser module through the straight-bar on the ring, and the laser module is connected to the power through the switch.
Further, the length of the straight rod is larger than or equal to the radius of the arc-shaped convex part.
Furthermore, an angle line is arranged at the free end of the arc-shaped protruding part and used for reading the rotation angle of the laser module relative to the initial position of the laser module.
Further, the free end fixed mounting of clearance piece handle has the pivot, and the cavity has been seted up to the link of measuring head, and the shape of pivot and cavity is the same, and pivot and cavity are used for mutually supporting to realize rotating each other between measuring head and the clearance piece handle.
Furthermore, two elastic protruding strips are oppositely arranged on the side face of the rotating shaft, two cavity lugs used for containing the elastic protruding strips are oppositely arranged on the side face of the cavity, and the two cavity lugs are communicated with the cavity into a whole.
The utility model has the advantages that: through the laser emission module of measuring head free end setting, the laser emission module can send laser ray, can replace metal power line measuring stick through laser ray, carry out the detection of osteotomy face, the operating time who uses metal power line measuring stick has been saved, and then reduce the operation duration, and angle measurement's accuracy nature has been improved greatly, and improve original through metal power line measuring stick and fix a position the measurement for pointing through the laser, assist with angle measurement, the measurement accuracy nature has been improved, measuring step has been simplified greatly.
[ description of the drawings ]
Fig. 1 is a schematic structural view of a lower limb force line measuring device in an artificial total knee joint replacement operation in embodiment 1 of the present invention;
FIG. 2 is a partial enlarged view of A in embodiment 1 of the present invention;
fig. 3 is a schematic structural view of a lower limb force line measuring device in an artificial total knee joint replacement operation in embodiment 2 of the present invention;
fig. 4 is a schematic structural view of the lower limb force line measuring device in the artificial total knee joint replacement operation of the present invention with the measuring head detached in embodiment 2;
fig. 5 is a sectional view of a rotating shaft of a gap block handle of a lower limb force line measuring device in an artificial total knee joint replacement operation according to embodiment 2 of the present invention;
fig. 6 is a schematic cross-sectional view of the connecting end of the measuring head of the lower limb force line measuring device in the artificial total knee joint replacement operation according to embodiment 2 of the present invention;
fig. 7 is a schematic structural view of a free end of a measuring head of a lower limb force line measuring device in an artificial total knee joint replacement operation in embodiment 1 of the present invention;
fig. 8 is a schematic diagram of a laser emission module in embodiment 1 of the present invention.
Wherein: 1. a gap block; 2. a gap block handle; 2-1. a rotating shaft; 2-2, elastic raised strips; 3. a measuring head; 3-1, a switch; 3-2. laser module; 3-3, arc-shaped convex part; 3-4, a circular ring; 3-5, rotating shaft of laser module; 3-6. power supply; 3-7, a cavity; 3-8, cavity lugs; 3-9, angle line.
[ detailed description ] embodiments
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1:
the embodiment discloses a lower limb force line measuring device in artificial total knee joint replacement, as shown in fig. 1, the device comprises a gap block 1 inserted into the gap of an osteotomy surface, the thickness of the gap block 1 is determined according to the osteotomy surface and is generally about 20mm, the upper surface and the lower surface of the gap block are respectively tightly attached to the two osteotomy surfaces, and the gap block can be made of metal or plastic without special requirements.
The tip fixed connection of clearance piece 1 has clearance piece handle 2, and the free end coaxial coupling of clearance piece handle 2 has measuring head 3, fixed connection between clearance piece handle 2 and the measuring head 3.
As shown in fig. 2 and 7, the lower portion of the measuring head 3 is provided with an arc-shaped protrusion 3-3, and the arc-shaped protrusion 3-3 extends from the connecting end to the free end of the measuring head 3; the free end of the arc-shaped bulge part 3-3 is provided with an angle line 3-9. In the initial state, the straight rod connected with the laser module 3-2 is positioned at the center line of the arc-shaped convex part 3-2(3), namely 0 degree of the angle line, and when the laser module 3-2 is rotated, the straight rod forms an angle with the 0 degree position of the scale line.
The free end of the measuring head 3 is provided with a laser emitting module, and the laser emitting module is used for emitting visible laser to the upper part or the lower part of the gap block 1 when the gap block 1 is inserted into the gap of the osteotomy surface so as to obtain the lower limb force line of the patient through the falling point of the visible laser and further judge whether the osteotomy surface is vertical to the lower limb force line.
The middle part of the free end of the measuring head 3 extends outwards to form a laser module rotating shaft 3-5, and the rotating shaft 3-5 and the arc-shaped bulge part 3-3 are coaxial; the rotating shaft 3-5 of the laser module is sleeved with a rotatable ring 3-4, and the ring 4 rotates on the rotating shaft 3-5 of the laser module, so that the laser emission angle of the laser module 3-2 can be adjusted. A bushing can be additionally arranged between the circular ring 3-4 and the laser module rotating shaft 3-5 to ensure that after an operator rotates the laser module 3-2, the circular ring 3-4 is fixed relative to the laser module rotating shaft 3-5 and cannot rotate freely, so that the operator can confirm the rotation angle of the laser module 3-2 relative to the initial position by observing the position of the straight rod on the angle line 3-9, and further obtain the angle between the osteotomy surface and the lower limb force line to judge whether the osteotomy surface is vertical to the lower limb force line.
The circular ring 3-4 is connected with a laser module 3-2 through a straight rod, and the length of the straight rod is larger than or equal to the radius of the arc-shaped convex part 3-3. The laser module 3-2 is connected to a power supply 3-6 through a switch 3-1. As shown in fig. 8, in this embodiment, the laser module 3-2, the switch 3-1 and the power supply 3-6 are all installed in a box outside the laser module 3-2, and since the volume of each component is small, the space is not occupied too much, and unnecessary problems caused by the exposed wires between each component are avoided.
The laser module of the H436501D-AL model that the laser module chose to send laser technology Limited company in zhhai for use in this embodiment, its operating voltage is 2.8 ~ 3.5V, and transmission laser wavelength is 650nm, can emit visible light, is the pointolite, and its size of a dimension is 4 x 10mm, is applicable to the utility model discloses an environment of use. The power supply adopts a Nanfu button battery, the model is CR2032, the output voltage of the Nanfu button battery is 3V, a battery groove is formed in the outer box body of the laser module 3-2 and used for accommodating the button battery, the output voltage of the battery is matched with the output voltage of the laser module 3-2, and a switch is connected between the battery and the laser module 3-2 in series and used for realizing the on/off of the laser module.
In the initial state, the end face of the measuring head 3 with the arc-shaped bulge part 3-3 faces the foot of the patient, so that laser is emitted towards the instep of the patient through the laser module 3-2, whether a laser drop point falls on the center of the ankle joint is observed, if so, the osteotomy face angle is good, the operation is smooth, otherwise, the osteotomy face angle is problematic, and the osteotomy needs to be performed again.
After the examination, the whole device is taken out, after the horizontal overturning, the gap block 1 is inserted into the gap of the osteotomy surface, the laser module 3-2 faces the hip of the patient, the laser module 3-2 emits laser to observe whether the laser drop point falls on the center of the femoral head, if so, the osteotomy surface angle is good, the operation is smooth, otherwise, the osteotomy surface angle is proved to be problematic, and the osteotomy is required to be performed again.
Example 2:
the parts and features not mentioned in this embodiment are exactly the same as those in embodiment 1.
As shown in fig. 3 and 4, a rotating shaft 2-1 is fixedly mounted at the free end of the gap block handle 2, the rotating shaft 2-1 is located at the midpoint of the free end, a cavity 3-7 is formed in the connecting end of the measuring head 3, the cavity 3-7 is used for accommodating the rotating shaft 2-1, the shape of the rotating shaft 2-1 is the same as that of the cavity 3-7, the measuring head 3 and the gap block handle 2 can be detachably connected by matching the rotating shaft 2-1 and the cavity 3-7, and the measuring head 3 can rotate relative to the gap block handle 2 to adjust the orientation of the measuring head 3, so that the laser emission direction of the laser module 3-2 is adjusted.
As shown in figure 5, two elastic convex strips 2-2 are oppositely arranged on the side surface of the rotating shaft 2-1, as shown in figure 6, two cavity lugs 3-8 for accommodating the elastic convex strips 2 are oppositely arranged on the side surface of the cavity 3-7, and the two cavity lugs 3-8 are communicated with the cavity 3-7 into a whole. The rotating shaft 2-1 and the elastic convex strips 2-2 on the rotating shaft can be accommodated through the cavity lugs 3-8 and the cavities 3-7, and the relative rotation angle (180 degrees of rotation) between the measuring head 3 and the gap block handle 2 can be fixed through the matching of the elastic convex strips 2-2 and the cavity lugs 3-8 so as to ensure that the direction of laser emitted by the laser module 3-2 is vertical to the plane of the gap block 1.
The spring is arranged inside the elastic protruding strip 2-2, so that the elastic protruding strip 2-2 can be recessed downwards into the rotating shaft 2-1, when the measuring head 3 starts to rotate, the elastic protruding strip 2-2 is located in the cavity lug 3-8, the measuring head needs to be rotated forcibly, the elastic protruding strip 2-2 is recessed downwards into the rotating shaft 2-1 under the pressure of the side wall of the cavity lug 3-8, the measuring head 3 cannot be hindered by the elastic protruding strip 2-2 when rotating relative to the gap block handle 2, and when the measuring head 3 rotates to a preset position, the elastic protruding strip 2-2 can be popped out and clamped into the cavity lug 3-8 to prompt the measuring head 3 to rotate to the position.
The using process of the embodiment is as follows:
inserting the gap block 1 between the two osteotomy surfaces, resetting the measuring head after insertion, turning on the switch 3-1 to enable the laser module 3-2 to emit laser, and observing whether a laser drop point falls on the central line of the ankle joint;
if not, the osteotomy surface is not perpendicular to the lower limb force line of the patient, the deflection angle of the straight rod connected with the laser module 3-2 relative to the angle line of 0 degree is read, and the bone is resected again, so that the osteotomy surface is perpendicular to the lower limb force line of the patient.
If yes, the measuring head 3 is rotated, a laser ejection port of the laser module 3-2 faces the hip of the patient, and whether a laser drop point falls on the center of the femoral head is observed; if yes, closing the laser module 3-2, taking out the device, and implanting the artificial knee joint prosthesis into the patient; if not, the osteotomy surface is not perpendicular to the lower limb force line of the patient, the deflection angle of the straight rod connected with the laser module 3-2 relative to the angle line of 0 degree is read, and the bone is resected again, so that the osteotomy surface is perpendicular to the lower limb force line of the patient.
Claims (6)
1. The utility model provides a lower limbs force line measuring device in artifical total knee joint replacement art, its characterized in that, including being arranged in inserting clearance piece (1) in the osteotomy face clearance, clearance piece handle (2) are connected to the tip fixed of clearance piece (1), the free end coaxial coupling of clearance piece handle (2) has measuring head (3), laser emission module is installed to the free end of measuring head (3), laser emission module is used for working as when clearance piece (1) inserts in the osteotomy face clearance, to the top of clearance piece (1) or below visible laser of launching, with through the lower limbs force line of patient is acquireed to the drop point of visible laser, and then judges whether the osteotomy face is perpendicular with lower limbs force line.
2. The lower limb force line measuring device in the artificial total knee replacement surgery as recited in claim 1, characterized in that the lower part of the measuring head (3) is provided with an arc-shaped bulge (3-3), and the arc-shaped bulge (3-3) extends from the connecting end to the free end of the measuring head (3);
the middle part of the free end of the measuring head (3) extends outwards to form a laser module rotating shaft (3-5), and the rotating shaft (3-5) and the arc-shaped bulge part (3-3) are coaxial; the rotating shaft (3-5) of the laser module is sleeved with a rotatable ring (3-4), the ring (3-4) is connected with the laser module (3-2) through a straight rod, and the laser module (3-2) is connected to a power supply (3-6) through a switch (3-1).
3. The lower limb force line measuring device for artificial total knee replacement of claim 2, wherein the length of the straight rod is greater than or equal to the radius of the arc-shaped convex part (3-3).
4. The lower limb force line measuring device in artificial total knee replacement according to claim 2 or 3, characterized in that the free end of the arc-shaped convex part (3-3) is provided with an angle line (3-9), and the angle line (3-9) is used for reading the rotation angle of the laser module (3-2) relative to the initial position.
5. The lower limb force line measuring device in the artificial total knee joint replacement surgery as claimed in claim 1, characterized in that a rotating shaft (2-1) is fixedly installed at the free end of the gap block handle (2), a cavity (3-7) is opened at the connecting end of the measuring head (3), the shape of the rotating shaft (2-1) is the same as that of the cavity (3-7), and the rotating shaft (2-1) and the cavity (3-7) are used for being matched with each other to realize the mutual rotation between the measuring head (3) and the gap block handle (2).
6. The lower limb force line measuring device in the artificial total knee replacement surgery as claimed in claim 5, characterized in that two elastic convex strips (2-2) are oppositely arranged on the side surface of the rotating shaft (2-1), two cavity lugs (3-8) for accommodating the elastic convex strips (2-2) are oppositely arranged on the side surface of the cavity (3-7), and the two cavity lugs (3-8) are communicated with the cavity (3-7) into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920450324.3U CN210019693U (en) | 2019-04-04 | 2019-04-04 | Lower limb force line measuring device in artificial total knee joint replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920450324.3U CN210019693U (en) | 2019-04-04 | 2019-04-04 | Lower limb force line measuring device in artificial total knee joint replacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210019693U true CN210019693U (en) | 2020-02-07 |
Family
ID=69357821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920450324.3U Active CN210019693U (en) | 2019-04-04 | 2019-04-04 | Lower limb force line measuring device in artificial total knee joint replacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210019693U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112494098A (en) * | 2020-12-24 | 2021-03-16 | 山东大学齐鲁医院(青岛) | Tibial plateau cuts bone power line verification device |
| CN114469253A (en) * | 2021-12-17 | 2022-05-13 | 中国人民解放军总医院第四医学中心 | Laser device for accurately indicating osteotomy plane in artificial knee joint replacement |
| CN115624366A (en) * | 2022-09-21 | 2023-01-20 | 北京长木谷医疗科技有限公司 | Detection system, method and device for positioning tool for knee joint replacement |
-
2019
- 2019-04-04 CN CN201920450324.3U patent/CN210019693U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112494098A (en) * | 2020-12-24 | 2021-03-16 | 山东大学齐鲁医院(青岛) | Tibial plateau cuts bone power line verification device |
| CN114469253A (en) * | 2021-12-17 | 2022-05-13 | 中国人民解放军总医院第四医学中心 | Laser device for accurately indicating osteotomy plane in artificial knee joint replacement |
| CN115624366A (en) * | 2022-09-21 | 2023-01-20 | 北京长木谷医疗科技有限公司 | Detection system, method and device for positioning tool for knee joint replacement |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210019693U (en) | Lower limb force line measuring device in artificial total knee joint replacement | |
| US10172723B2 (en) | Sensing force during partial or total knee replacement surgery | |
| US8961526B2 (en) | System and method for orienting orthopedic implants | |
| CN206167123U (en) | Keep nodal section type that closes matched stack formula thighbone tumour knee joint prosthesis | |
| US8951256B2 (en) | System and method for orienting orthopedic implants | |
| US7291176B2 (en) | System for establishing the orientation of a modular implant | |
| US11779357B2 (en) | Detector for artificial joint replacement | |
| US9681960B2 (en) | Guides for fracture system | |
| CN107212912B (en) | Minimally invasive femur distal medullary cavity orientator | |
| EA008902B1 (en) | A gauge for use in a surgical procedure | |
| CN111839838B (en) | Adjustable tibia probe | |
| Cristofolini et al. | Device to measure intra-operatively the primary stability of cementless hip stems | |
| CN107961056A (en) | A kind of line of force measurement angle positioner for knee joint peripheral osteotomy | |
| CN109481096B (en) | Knee joint prosthesis | |
| CN110063821A (en) | A kind of proximal end forming device | |
| CN215584483U (en) | Adjustable knee joint pressure measuring device for total knee joint replacement | |
| US20190209079A1 (en) | Integrated Ligament Strain Measurement | |
| CN213941067U (en) | Knee joint prosthesis shin bone side positioner | |
| CN108814774B (en) | 3D installation guiding positioner for femoral prosthesis | |
| CN210727880U (en) | Control device for power supply | |
| US20160310297A1 (en) | Universal force sensor for medical applications | |
| CN208404735U (en) | A kind of osteotomy guiding | |
| KR102186308B1 (en) | Smart surgical instruments for artificial joint replacement | |
| CN113813007A (en) | Angle-adjustable femoral punching device | |
| US20230310088A1 (en) | Orientation of surgical instruments and implants |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |