CN213758439U - Extramedullary positioner - Google Patents
Extramedullary positioner Download PDFInfo
- Publication number
- CN213758439U CN213758439U CN202022307831.7U CN202022307831U CN213758439U CN 213758439 U CN213758439 U CN 213758439U CN 202022307831 U CN202022307831 U CN 202022307831U CN 213758439 U CN213758439 U CN 213758439U
- Authority
- CN
- China
- Prior art keywords
- ankle
- extramedullary
- upper rod
- positioner
- adjusting
- 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
- Surgical Instruments (AREA)
Abstract
The utility model discloses an extramedullary locator, include: an ankle clamp; and a coronal line alignment device connected to the ankle brace; the adjusting connecting rod is connected with the coronal plane force line aligning device and can translate and lock on the coronal plane force line aligning device; one end of the ankle embracing device is vertically connected with the adjusting connecting rod, and the ankle embracing device can be horizontally moved and locked on the adjusting connecting rod; an upper rod, one end of which is arranged inside the ankle holding device; the height adjusting device is fixed at the other end of the ankle holding device; the height adjusting device is sleeved on the upper rod in a lockable manner, so that the height of the upper rod relative to the ankle holding device can be adjusted; the positioning block is connected with the tibia osteotomy plate and is sleeved on the upper rod in a lockable manner; one end of the nail handle is sleeved on the other end of the upper rod in a hollow mode, and the other end of the nail handle is provided with a guide pin; the rocker is connected with the other end of the upper rod, and a lever mechanism is arranged between the rocker and the nail handle. The utility model has the characteristics of high adaptability and filterability.
Description
Technical Field
The utility model relates to the technical field of medical equipment, more specifically, the utility model relates to an extramedullary locator.
Background
The extramedullary localizer is a knee joint replacement surgical instrument used for locating the position of the tibia osteotomy plate when the tibia is cut at the proximal end.
However, in the current market, the existing extramedullary localizers have great hidden trouble, most extramedullary localizers need to connect a sliding hammer to take out the nail, the operation is inconvenient, and the leg of the patient can move; when the universal extramedullary positioner is matched with the tibia osteotomy plate, the tibia osteotomy plate cannot be effectively fixed, the tibia osteotomy plate cannot be locked, and the extramedullary positioner can shake up and down to cause an error in the osteotomy position.
SUMMERY OF THE UTILITY MODEL
One purpose of the utility model is to design and develop an extramedullary locator, which forms a lever structure through a nail handle and a wane, and directly extracts nails without the assistance of a sliding hammer; and the position of the tibia osteotomy plate is locked through the positioning block, so that the accuracy of osteotomy is improved.
The utility model provides a technical scheme does:
an extramedullary locator comprising:
an ankle clamp; and
a coronal line alignment device connected to the ankle brace;
an adjustment linkage connected to the coronal line of force alignment device, the adjustment linkage capable of translating and locking on the coronal line of force alignment device;
one end of the ankle embracing device is vertically connected with the adjusting connecting rod, and the ankle embracing device can be horizontally moved and locked on the adjusting connecting rod;
an upper rod, one end of which is arranged inside the ankle holding device;
the height adjusting device is fixed at the other end of the ankle embracing device;
the other end of the upper rod penetrates through the height adjusting device, so that the height of the upper rod relative to the ankle embracing device can be adjusted;
the positioning block is connected with the tibia osteotomy plate and can be tightly sleeved on the upper rod;
one end of the nail handle is sleeved at the other end of the upper rod, and the other end of the nail handle is provided with a guide pin;
the wane, its one end with the middle part of nail handle is connected, and the other end can the block be in the other end of upper boom, just the wane with be lever mechanism between the nail handle.
Preferably, the ankle clips are oppositely disposed straps, the ends of the straps being fixedly attached to the coronal line-of-force alignment device.
Preferably, the coronal line of force alignment device further comprises a chute.
Preferably, the adjusting link comprises:
a sliding portion slidably provided in the chute;
one end of the connecting rod is fixedly connected with the sliding part;
the adjusting handle is fixedly connected with the other end of the connecting rod;
the first sleeve is sleeved on the connecting rod in an empty mode.
Preferably, the sliding groove and the first sleeve are provided with scales.
Preferably, the ankle embracing device includes:
the locking connecting part is vertically sleeved on the first sleeve in a locking manner;
and one end of the second sleeve is fixedly connected with the locking connecting part, the other end of the second sleeve is fixedly connected with the height adjusting device, and a plurality of through holes are formed in the second sleeve at intervals.
Preferably, the height adjusting means is locked with the upper lever by a cam.
Preferably, the positioning block includes:
a housing having a receiving cavity;
one end of the spring is fixedly connected inside the accommodating cavity;
the sliding block is arranged in the accommodating cavity and is fixedly connected with the other end of the spring;
the adjusting wheel is arranged inside the accommodating cavity and is connected with the sliding block;
the bone cutting connecting part is connected with the shell and is connected with the tibia osteotomy plate;
the shell and the sliding block are provided with through holes, the upper rod penetrates through the through holes, and the adjusting wheel is in threaded connection with the upper rod.
Preferably, the ankle clip is made of a polymer material.
Preferably, the coronal plane force line aligning device, the adjusting connecting rod, the ankle holding device, the upper rod, the height adjusting device, the positioning block, the nail handle and the rocker are all made of stainless steel.
Beneficial effects do:
(1) compared with the conventional extramedullary positioner, the extramedullary positioner of the utility model has the advantages that the nail handle and the wane form a lever structure, the sliding hammer is not needed for assistance, the nail is directly pulled out, the operation is simple and convenient, the surgical instruments are reduced, and the operation time is saved;
(2) extramedullary locator, compare with conventional extramedullary locator, cut the position of hone lamella through the locating piece locking shin bone for the shin bone cuts the hone lamella and can not reciprocate, has improved the accuracy of cutting the bone.
Drawings
Fig. 1 is a schematic side view of the extramedullary positioner of the present invention.
Fig. 2 is a schematic view of the overall structure of the extramedullary positioner of the present invention.
Fig. 3 is the schematic view of the assembly structure of the ankle-holding device and the adjusting connecting rod of the present invention.
Fig. 4 is a schematic structural view of the upper rod of the present invention.
Fig. 5 is a schematic structural view of the height adjusting device of the present invention.
Fig. 6 is a schematic side view of the positioning block of the present invention.
Fig. 7 is a schematic view of the overall structure of the positioning block of the present invention.
Fig. 8 is a schematic bottom view of the positioning block of the present invention.
Fig. 9 is a schematic structural view of the nail handle of the present invention.
Fig. 10 is a schematic structural view of the rocker of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1 and 2, the utility model provides an extramedullary positioner, which comprises: a rocker 110, a tack shank 120, an upper bar 130, a locating block 140, a height adjustment device 150, an ankle hugger 160, an adjustment link bar 170, an ankle clip 180, and a coronal line-of-force alignment device 190.
Wherein the ankle clip 180 is an oppositely disposed collar, the distal end of which is fixedly attached to one side of the coronal line-of-force alignment device 190.
As shown in fig. 3, the other side of the coronal line-of-force alignment device 190 is a chute structure; the adjusting link bar 170 includes: a sliding portion (not shown) slidably disposed in the sliding groove, a connecting rod (not shown), an adjustment handle 171, and a first sleeve 172; one end of the connecting rod is fixedly connected with the sliding part; the adjusting handle 171 is fixedly connected with the other end of the connecting rod; the first sleeve 172 is sleeved on the connecting rod; the chute and the first sleeve 172 each have a scale thereon.
As shown in fig. 4, the upper lever 130 includes: the height adjusting device comprises a protruding portion 131, a first connecting end 132 and a second connecting end 133, wherein the protruding portion is arranged between the first connecting end 132 and the second connecting end 133, the protruding portion 131 and the second connecting end 133 are externally threaded, the second connecting end 133 is arranged inside the second sleeve 161, and the second connecting end 133 penetrates through the height adjusting device 150, as shown in fig. 5, the height adjusting device 150 can press the second connecting end 133 of the upper rod 130 through a wrench, and cam locking of the height adjusting device 150 and the second connecting end 133 is achieved.
As shown in fig. 6, 7 and 8, the positioning block 140 includes: a housing 141, an osteotomy connecting portion 142, a slider 143, a spring 144 and an adjusting wheel 145, wherein the housing 141 has a receiving cavity; one end of the spring 144 is fixedly connected to the inside of the accommodating cavity; the sliding block 143 is arranged inside the accommodating cavity, and the sliding block 143 is fixedly connected with the other end of the spring 144; the spring 144 pushes the sliding block 143 to the outside, and the sliding block 143 is limited by a limit pin; the adjusting wheel 145 is arranged inside the accommodating cavity, and the adjusting wheel 145 is connected with the sliding block 143; the osteotomy connecting portion 142 is connected to the shell 141, and the osteotomy connecting portion 142 is connected to the tibial osteotomy plate; the housing 141 and the sliding block 143 are respectively provided with a through hole, the second connecting end of the upper rod 130 passes through the through hole, and the adjusting wheel 145 is disposed between the protruding portion 131 and the second connecting end 133 through threaded connection, so that the positioning block 140 can be locked on the upper rod 130 in the vertical direction, and the adjusting wheel 145 can be rotated to enable the positioning block 140 to move up and down on the upper rod 130.
One end of the nail handle 120 is sleeved on the first connecting end 132 of the upper rod 130, and the other end is provided with a guide pin which is fixed on the tibia; one end of the rocker 110 is connected to the middle of the nail shank 120, and the other end can be fastened to the first connection end 132 of the upper rod 130, and a lever mechanism is disposed between the rocker 110 and the nail shank 120.
The ankle clip 180 is made of a polymer material, and the coronal force line alignment device 190, the adjustment connecting rod 170, the ankle clasping device 160, the upper rod 130, the height adjustment device 150, the positioning block 140, the nail handle 120 and the rocker 110 are made of stainless steel.
When the device is used, the ankle clip 180 is firstly clasped to the ankle, the coronal line of force is adjusted and aligned through the coronal line of force aligning device 190, then the position of the ankle clasping device 160 on the adjusting connecting rod 170 is positioned, the height of the upper rod 130 is adjusted, and finally the position of the positioning block 140 is adjusted and the tibial osteotomy plate is installed.
The coronal line-of-force alignment means 190 is used for adjusting the alignment of the ankle clamp 180 with the coronal line-of-force, the adjusting connecting rod 170 is used for adjusting the position of the ankle clasper 160, the height adjusting means 150 is used for adjusting the height of the upper rod 130, and the positioning block 140 is used for adjusting the position of the tibial osteotomy plate, thereby controlling the thickness of the osteotomy; the coronal line-of-force alignment device 190 is rotationally adjustable by the adjustment handle 171 and preferably has an angular notch to improve coronal line-of-force alignment accuracy; ankle embracing device 160 adopts the fixed ankle embracing device 160 of the rotatory mode of rotatory locking handle 163 to set up the angle nick on adjusting connecting rod 170, location angle that can be more accurate has higher precision for through the traditional mode of directly adjusting the osteotomy module vertical position.
The device organically integrates the components of all parts to be aligned in the process of cutting the tibia, can effectively improve the precision of the existing tibia cutting bone marrow outer positioner, and effectively controls the height and the tibia cutting thickness in the process of cutting the tibia.
The utility model discloses a work flow does: connecting the tibia osteotomy plate with the positioning block 140, pressing the adjusting wheel 145, enabling the upper rod 130 to penetrate into a corresponding hole on the positioning block 140, releasing the adjusting wheel 145 to lock the positioning block 140 and the upper rod 130, rotating the adjusting wheel 145 to enable the positioning block 140 to move up and down, and thus adjusting the position of the tibia osteotomy plate; the upper rod 130 penetrates into a corresponding hole of the height adjusting device 150, and the upper rod 130 is locked by pressing down a wrench; two guide pins on the nail handle 120 are nailed into the plane of the tibial plateau, and the ankle clamp 180 clasps the ankle joint part; the wane 110 is moved upward after the operation, and two guide pins are taken out.
Compared with the conventional extramedullary positioner, the extramedullary positioner of the utility model has the advantages that the nail handle and the wane form a lever structure, the sliding hammer is not needed for assistance, the nail is directly pulled out, the operation is simple and convenient, the surgical instruments are reduced, and the operation time is saved; compared with the conventional extramedullary positioner, the position of the tibial osteotomy plate is locked by the positioning block, so that the tibial osteotomy plate cannot move up and down, and the accuracy of osteotomy is improved.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (10)
1. An extramedullary positioner, comprising:
an ankle clamp; and
a coronal line alignment device connected to the ankle brace;
an adjustment linkage connected to the coronal line of force alignment device, the adjustment linkage capable of translating and locking on the coronal line of force alignment device;
one end of the ankle embracing device is vertically connected with the adjusting connecting rod, and the ankle embracing device can be horizontally moved and locked on the adjusting connecting rod;
an upper rod, one end of which is arranged inside the ankle holding device;
the height adjusting device is fixed at the other end of the ankle embracing device;
the other end of the upper rod penetrates through the height adjusting device, so that the height of the upper rod relative to the ankle embracing device can be adjusted;
the positioning block is connected with the tibia osteotomy plate and can be tightly sleeved on the upper rod;
one end of the nail handle is sleeved at the other end of the upper rod, and the other end of the nail handle is provided with a guide pin;
the wane, its one end with the middle part of nail handle is connected, and the other end can the block be in the other end of upper boom, just the wane with be lever mechanism between the nail handle.
2. The extramedullary positioner of claim 1, wherein the ankle clips are oppositely disposed collars, the collar ends fixedly connected to the coronal line-of-force alignment device.
3. The extramedullary positioner of claim 2, wherein the coronal line-of-force alignment device further comprises a chute.
4. The extramedullary positioner of claim 3, wherein the adjustment linkage rod comprises:
a sliding portion slidably provided in the chute;
one end of the connecting rod is fixedly connected with the sliding part;
the adjusting handle is fixedly connected with the other end of the connecting rod;
the first sleeve is sleeved on the connecting rod in an empty mode.
5. The extramedullary positioner of claim 4, wherein the chute and the first sleeve each have a scale thereon.
6. The extramedullary positioner of claim 5, wherein the ankle clasper comprises:
the locking connecting part is vertically sleeved on the first sleeve in a locking manner;
and one end of the second sleeve is fixedly connected with the locking connecting part, the other end of the second sleeve is fixedly connected with the height adjusting device, and a plurality of through holes are formed in the second sleeve at intervals.
7. The extramedullary positioner of claim 6, wherein the height adjustment device is locked with the upper rod by a cam.
8. The extramedullary positioner of claim 7, wherein the positioning block comprises:
a housing having a receiving cavity;
one end of the spring is fixedly connected inside the accommodating cavity;
the sliding block is arranged in the accommodating cavity and is fixedly connected with the other end of the spring;
the adjusting wheel is arranged inside the accommodating cavity and is connected with the sliding block;
the bone cutting connecting part is connected with the shell and is connected with the tibia osteotomy plate;
the shell and the sliding block are provided with through holes, the upper rod penetrates through the through holes, and the adjusting wheel is in threaded connection with the upper rod.
9. The extramedullary locator of claim 8 wherein the ankle clip is formed of a polymeric material.
10. The extramedullary positioner of claim 9, wherein the coronal line-of-force alignment device, the adjustment connecting rod, the ankle clasper, the upper rod, the height adjustment device, the positioning block, the nail handle, and the rocker are all made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022307831.7U CN213758439U (en) | 2020-10-16 | 2020-10-16 | Extramedullary positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022307831.7U CN213758439U (en) | 2020-10-16 | 2020-10-16 | Extramedullary positioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213758439U true CN213758439U (en) | 2021-07-23 |
Family
ID=76909193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022307831.7U Active CN213758439U (en) | 2020-10-16 | 2020-10-16 | Extramedullary positioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213758439U (en) |
-
2020
- 2020-10-16 CN CN202022307831.7U patent/CN213758439U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU686457B2 (en) | Femoral and tibial resection method and apparatus | |
| US8945132B2 (en) | Device, system and method for positioning or preparing the positioning of a medical operating instrument | |
| US8216242B2 (en) | Modular patella instrument | |
| AU2004201721B2 (en) | An apparatus for the preparation of a femoral condyle | |
| US10052113B2 (en) | Medical aligning device | |
| US5720752A (en) | Distal femoral cutting guide apparatus with anterior or posterior referencing for use in knee joint replacement surgery | |
| US5562674A (en) | Intramedullary rod with guide member locator | |
| US20100069910A1 (en) | Osteotomy Guide and Method of Cutting the Medial Distal Tibia Employing the Same | |
| JPH10506022A (en) | Device for mechanically aligning a bone screw in an intramedullary nail member | |
| US20040249387A1 (en) | Apparatus for the preparation of a femoral condyle | |
| US7344542B2 (en) | Pin extraction assembly | |
| KR19980702249A (en) | Patella Clamp Device | |
| JPH03503493A (en) | Device for reducing fractures | |
| WO1997030640A9 (en) | Distal femoral cutting guide apparatus | |
| JP2023521484A (en) | Alignment device for tibial resection guide | |
| CN112336412A (en) | Osteotomy positioning device | |
| CN213758439U (en) | Extramedullary positioner | |
| CN211270993U (en) | Osteotomy positioning device | |
| CN208339561U (en) | Osteotomy guider is positioned outside accurate shin bone marrow | |
| CN107789047A (en) | A kind of fracture resetting tongs | |
| CN210811350U (en) | Alignment positioning device for distal end of femoral osteotomy | |
| CN111870310A (en) | Tibia cutting marrow external and intramedullary multifunctional positioning system | |
| CN211270994U (en) | Femur osteotomy positioning guider | |
| CN213883388U (en) | Platform cuts bone locator | |
| CN110974345A (en) | Femoral osteotomy positioning assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |