CN216877021U - Knee joint distraction device, knee joint support and operating table - Google Patents
Knee joint distraction device, knee joint support and operating table Download PDFInfo
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- CN216877021U CN216877021U CN202122997513.2U CN202122997513U CN216877021U CN 216877021 U CN216877021 U CN 216877021U CN 202122997513 U CN202122997513 U CN 202122997513U CN 216877021 U CN216877021 U CN 216877021U
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- knee joint
- outer sleeve
- lifting
- spreader
- distraction device
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Abstract
The utility model discloses a knee joint strutting device, a knee joint support and an operating table, belonging to the technical field of medical instruments, wherein the knee joint strutting device comprises a distracter, the upper end of the distracter is provided with a leg pit supporting block, the distracter comprises a distracter outer sleeve, a lifting shaft capable of moving up and down relative to the distracter outer sleeve is arranged in the distracter outer sleeve in a penetrating way, and the upper end of the lifting shaft penetrates through the distracter outer sleeve and is connected with the leg pit supporting block in a driving way; the lifting plate is sleeved on the lifting shaft in the spreader outer sleeve, the lever wrench is hinged on the spreader outer sleeve, the lever wrench is connected with one end, close to the lever wrench, of the lifting plate in a driving mode, and a withdrawing prevention structure for preventing the lifting shaft from withdrawing is arranged in the spreader outer sleeve. The knee joint distraction device, the knee joint support and the operating bed provided by the utility model can conveniently adjust the distraction distance/position of the knee joint, and the distraction distance/position is not easy to change.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a knee joint distraction device, a knee joint support and an operating table.
Background
In knee joint surgery (including robotic knee joint surgery and partial intramedullary positioning surgery), a knee joint support is used to position and fix the patient's leg while distracting the knee joint. Existing knee braces typically include a leg adjustment fixture (typically including a universally adjustable L-shaped fixed foot cuff) and a knee distraction device. The lower end of the knee joint distraction device is usually fixed on the back of the fixed foot sleeve, and the upper end of the knee joint distraction device is propped against the femoral shaft part of the knee joint to retract the knee joint part of the leg part so as to facilitate the operation.
In the prior art, in order to realize the adjustment of the distraction distance, some knee joint distraction devices adopt a sliding block sliding connection mode and some knee joint distraction devices adopt a sleeve connection mode, however, when the knee joint distraction devices are used in the operation (namely, when the legs of a patient are placed on the knee joint distraction devices), the distraction distance is not convenient to adjust under the pressure action of the legs of the patient, the knee joint distraction devices are difficult to adjust to the expected distraction distance/position, and even if the knee joint distraction devices are adjusted to the expected distraction distance/position, the distraction distance/position is easy to change before the knee joint distraction devices are completely locked.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a knee joint distraction device, a knee joint support and an operating table, which can conveniently adjust the distraction distance/position in an operation and can not easily change the distraction distance/position.
In order to solve the technical problems, the utility model provides the following technical scheme:
on the one hand, provide a knee joint distraction device, including the spreader, the upper end of spreader is equipped with the leg socket supporting shoe, wherein:
the spreader comprises a spreader outer sleeve, a lifting shaft capable of moving up and down relative to the spreader outer sleeve is arranged in the spreader outer sleeve in a penetrating manner, and the upper end of the lifting shaft penetrates through the spreader outer sleeve and is in driving connection with the leg socket supporting block;
it is interior to strut ware outer tube the epaxial cover of lifting is equipped with the board of lifting, it has lever spanner to articulate on the ware outer tube to strut, lever spanner drive is connected the board of lifting is close to lever spanner's one end, strut and be equipped with in the ware outer tube and prevent that the axle of lifting returns prevents moving back the structure.
Further, prevent moving back the structure and establish for the cover lift epaxial preventing moving back the board, be equipped with first base station in the ware outer tube of strutting, prevent moving back the board and be located on the first base station.
Furthermore, the inner portion of the outer tube of the spreader is provided with a first spring which is used for pressing the anti-back plate on the first base station in a sleeved mode on the lifting shaft.
Further, prevent moving back the board and prevent moving back the board for the L shape, the L shape is prevented moving back the board and is included horizontal plate portion and swash plate portion, horizontal plate portion cover is established lift epaxially, swash plate portion is located the outside of struts ware outer tube.
Further, the lever spanner is L shape lever spanner, L shape lever spanner includes horizontal pole portion and montant portion, the rear end of horizontal pole portion is articulated prop up on the ware outer tube, the front end of horizontal pole portion is equipped with and is used for lifting the connecting axle of board of lifting, the montant position is in prop up the outside of ware outer tube.
Further, it is equipped with the second base station to strut the ware outer tube in the top of preventing moving back the structure, the board of lifting is located on the second base station, strut the ware outer tube in it is used for with to lift epaxial cover to be equipped with the board of lifting compresses tightly second spring on the second base station.
Furthermore, a semicircular groove is formed in one end, far away from the lever wrench, of the second base station;
and/or a first windowing is arranged above the anti-retreat structure on the outer sleeve of the distractor;
and/or a second window is arranged above the lifting plate on the outer sleeve of the spreader;
and/or the lower end of the dilator outer sleeve is provided with an observation window extending along the length direction of the dilator outer sleeve.
Furthermore, the side of the leg nest supporting block is provided with a transverse connecting part, the transverse connecting part is provided with a shaft hole, and the upper end of the lifting shaft is inserted into the shaft hole.
On the other hand, the knee joint support comprises a leg adjusting and fixing device and a knee joint distraction device, wherein the knee joint distraction device is the knee joint distraction device.
In another aspect, an operating table is provided, which includes a bed body and a knee joint distraction device disposed on the bed body, wherein the knee joint distraction device is the above knee joint distraction device.
The utility model has the following beneficial effects:
according to the knee joint distraction device, the knee joint support and the operating bed, the lever wrench which is in driving connection with the lifting plate is hinged on the external sleeve of the distraction device, so that when the knee joint distraction device is used in an operation (namely, when the leg of a patient is placed on the device), an operator can still operate with one person and one hand under the pressure action of the leg of the patient, the distraction distance can be conveniently adjusted, and the expected distraction distance/position can be adjusted; the inner of the outer sleeve of the distractor is provided with a retreat-preventing structure for preventing the lifting shaft from returning, and the lifting shaft can be locked in time, so that the distraction distance/position is not changed, and the operation and the operation quality are not influenced.
Drawings
FIG. 1 is a schematic view of the knee brace of the present invention in one orientation;
FIG. 2 is a schematic view of the knee brace of the present invention in another orientation;
FIG. 3 is a schematic view of the entire structure of the knee joint distraction device in the knee joint brace of the present invention;
FIG. 4 is a schematic exploded view of a knee distraction device of the knee brace of the present invention;
FIG. 5 is a front cross-sectional view of a knee distraction device in a knee brace of the present invention;
FIG. 6 is a side cross-sectional view of a knee distraction device in a knee brace of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
In one aspect, the present invention provides a knee joint distraction device, as shown in fig. 1 to 6, comprising a distractor 1, wherein a leg socket support block 2 is provided at an upper end of the distractor 1, wherein:
the spreader 1 comprises a spreader outer sleeve 11, a lifting shaft 12 which can move up and down relative to the spreader outer sleeve 11 is arranged in the spreader outer sleeve 11 in a penetrating way, and the upper end of the lifting shaft 12 penetrates through the spreader outer sleeve 11 and is connected with the leg socket supporting block 2 in a driving way;
the lifting plate 13 is sleeved on the lifting shaft 12 in the outer spreader sleeve 11, the lever wrench 14 is hinged (specifically, can be hinged on the outer spreader sleeve 11 through the hinge shaft 143) on the outer spreader sleeve 11, the lever wrench 14 is driven to be connected with one end (namely, the end far away from the leg socket supporting block 2 in the figure) of the lifting plate 13 close to the lever wrench 14, and the anti-withdrawal structure 15 for preventing the lifting shaft 12 from withdrawing is arranged in the outer spreader sleeve 11.
In the knee joint operation process, the lower end of the spreader 1 (namely the lower end of the spreader outer sleeve 11) is abutted against an operating bed or a fixed foot sleeve of a leg adjusting and fixing device, then a leg socket of a leg of a patient is placed on the leg socket supporting block 2, the lever wrench 14 is driven, the lever wrench 14 drives one end of the lifting plate 13 close to the lever wrench 14, the end of the lifting plate 13 is stressed (namely single-side stress) to enable a hole of the lifting plate 13 (namely a hole for enabling the lifting shaft 12 to penetrate through) and the lifting shaft 12 to generate friction force, the lifting shaft 12 drives the leg socket supporting block 2 to move upwards under the driving of the friction force, the leg socket supporting block 2 drives a femoral shaft part of the knee joint to move upwards, and the knee joint part of the leg of the patient is partially retracted; in the process, the anti-retreat structure 15 can prevent the lifting shaft 12 from retreating in time, so that the propping distance/position is not easy to change, the position of the leg cannot be changed, and the operation and the operation quality cannot be influenced.
According to the knee joint distraction device, the lever wrench which is in driving connection with the lifting plate is hinged on the external sleeve of the distracter, so that when the knee joint distraction device is used in an operation (namely, when the leg of a patient is placed on the knee joint distraction device), an operator can still operate with one hand by one person under the pressure action of the leg of the patient, the distraction distance can be conveniently adjusted, and the expected distraction distance/position can be adjusted; the inner of the outer sleeve of the distractor is provided with a retreat-preventing structure for preventing the lifting shaft from returning, and the lifting shaft can be locked in time, so that the distraction distance/position is not changed, and the operation and the operation quality are not influenced.
As shown in fig. 4-6, the anti-back-off structure 15 may take various structural forms that can be easily conceived by those skilled in the art, for example, the anti-back-off structure 15 may include an elastic latch arranged on the outer surface of the lifting shaft and a slot arranged in the outer casing of the distractor and matched with the elastic latch; however, for the convenience of implementation, the anti-receding structure 15 of the present invention is preferably an anti-receding plate sleeved on the lifting shaft 12, the first base 111 may be disposed in the outer casing 11 of the distractor, the anti-receding plate 15 is located on the first base 111, and the anti-receding plate 15 prevents the lifting shaft 12 from receding through friction. The lifting shaft 12 in the outer tube 11 of the distractor can be sleeved with a first spring 16 for pressing the anti-back plate 15 on the first base station 111, so that the anti-back plate 15 can be conveniently returned.
Conceivably, the anti-return plate can be a straight plate, and one end of the straight plate penetrates through the spreader outer sleeve so as to facilitate manual operation to return the lifting shaft; however, in order to save labor and reduce unnecessary scratches, the anti-receding plate 15 of the present invention is preferably an L-shaped anti-receding plate, as shown in fig. 6, the L-shaped anti-receding plate may include a horizontal plate portion 151 and a sloping plate portion 152, the horizontal plate portion 151 is sleeved on the lifting shaft 12, and the sloping plate portion 152 is located outside the spreader outer tube 11. When in use, the transverse plate part 151 can lock the lifting shaft 12 in time under the action of the first spring 16 to prevent the lifting shaft 12 from retracting; when unlocking is required, the inclined plate part 152 is pressed, and the lifting shaft 12 can automatically retract under the action of pressure/gravity. Further, the angle between the straight line of the inclined plate portion 152 and the axis of the lifting shaft 12 may be 30 to 60 degrees.
As further shown in fig. 4-6, in order to facilitate driving the lifting plate 13, the lever wrench 14 is preferably an L-shaped lever wrench, which may include a horizontal rod portion 141 and a vertical rod portion 142, the rear end of the horizontal rod portion 141 is hinged to the spreader outer sleeve 11, the front end of the horizontal rod portion 141 is provided with a connecting shaft 1411 for lifting the lifting plate 13, the connecting shaft 1411 is located below one end of the lifting plate 13 close to the lever wrench 14, and the vertical rod portion 141 is located outside the spreader outer sleeve 11.
In order to facilitate the returning of the lifting plate 13, a second abutment 17 may be provided above the anti-receding structure 15 in the outer tube 11 of the distractor, the lifting plate 13 is located on the second abutment 17, and a second spring 18 for pressing the lifting plate 13 against the second abutment 17 is sleeved on the lifting shaft 12 in the outer tube 11 of the distractor.
As shown in fig. 5, a semicircular groove 171 may be formed at an end of the second base 17 away from the lever wrench 14, such that an end of the lifting plate 13 away from the lever wrench 14 is located in the semicircular groove 171, which may reduce a friction force between the end of the lifting plate 13 away from the lever wrench 14 and the second base 17, thereby reducing a force used to drive the lever wrench 14.
As shown in fig. 4, to facilitate installation and viewing of the anti-retreat structure 15, the distractor outer tube 11 may be provided with a first window 112 above the anti-retreat structure 15. To facilitate installation and viewing of the lift plate 13, the distractor outer sleeve 11 may be provided with a second fenestration 113 above the lift plate 13. To facilitate viewing of the lifting shaft 12, the lower end of the distractor outer tube 11 may be provided with a viewing window 114 extending along the length of the distractor outer tube 11.
The side of leg nest supporting shoe 2 can be equipped with transverse connection portion 21, is equipped with shaft hole 211 on the transverse connection portion 21, and the upper end of lifting shaft 12 is inserted and is established in shaft hole 211, and the ware outer tube 11 that struts is located the side of leg nest supporting shoe 2 like this, can dodge patient's shank, and the operation lever spanner 14 in the convenient art more.
In another aspect, the present invention provides a knee joint support, as shown in fig. 1-2, including a leg adjustment fixing device and a knee joint distraction device, wherein the knee joint distraction device is the above-mentioned knee joint distraction device. Since the structure of the knee joint distraction device is the same as that of the above, the details are not repeated herein.
According to the knee joint support, the lever wrench which is in driving connection with the lifting plate is hinged to the outer sleeve of the opener of the knee joint opening device, so that when the knee joint support is used in an operation (namely, when the leg of a patient is placed on the knee joint support), an operator can still operate with one hand by one person under the pressure action of the leg of the patient, the opening distance is conveniently adjusted, and the expected opening distance/position can be adjusted; the inner of the outer sleeve of the distractor is provided with a retreat-preventing structure for preventing the lifting shaft from returning, and the lifting shaft can be locked in time, so that the distraction distance/position is not changed, and the operation and the operation quality are not influenced.
To facilitate placement of the patient's foot, the leg adjustment fixture may include an L-shaped retaining cuff 3, and a medical bandage may be used to secure the patient's foot to the L-shaped retaining cuff 3 during intraoperative use. The knee joint distraction device can be used independently (the lower end is fixed on an operating bed) or used together with a leg adjusting and fixing device, when the knee joint distraction device is used together with the leg adjusting and fixing device, the back of an L-shaped fixing foot sleeve 3 of the leg adjusting and fixing device can be provided with a plurality of transverse hooks 31 which are arranged along the longitudinal direction, and the lower end of an outer sleeve 11 of the distractor is provided with a transverse connecting rod 19 which is matched with the transverse hooks 31 so as to fix the lower end of the knee joint distraction device on the leg adjusting and fixing device. When in use in operation, the transverse connecting rod 19 at the lower end of the dilator outer sleeve 11 can be fixed on different transverse hooks 31 in advance, so as to adjust the initial distraction distance/position in advance. In the embodiment shown in fig. 1-2, the leg adjustment fixing device may further include a T-shaped slide 6, a slider fixing device 4 located on the T-shaped slide 6 for fixing the L-shaped fixing foot cover 3, and an operating table connecting device 5 located on the T-shaped slide 6 for connecting the side rail of the operating table. The slide fixing means 4 and the operating bed connecting means 5 are not of particular interest and may be of conventional design in the art and will not be described here.
In another aspect, the present invention provides an operating table (not shown), which includes a bed body, and a knee joint distraction device disposed on the bed body, wherein the knee joint distraction device is the above-mentioned knee joint distraction device. Since the structure of the knee joint distraction device is the same as that of the above, the details are not repeated herein.
According to the operating table, the lever wrench which is in driving connection with the lifting plate is hinged to the outer sleeve of the spreader of the knee joint spreading device, so that when the operating table is used in an operation (namely, when the leg of a patient is placed on the operating table), an operator can still operate with one hand by one person under the pressure action of the leg of the patient, the spreading distance can be conveniently adjusted, and the expected spreading distance/position can be adjusted; the inner of the outer sleeve of the distractor is provided with a retreat-preventing structure for preventing the lifting shaft from returning, and the lifting shaft can be locked in time, so that the distraction distance/position is not changed, and the operation and the operation quality are not influenced.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. The utility model provides a knee joint struts device which characterized in that, includes the spreader, the upper end of spreader is equipped with leg socket supporting shoe, wherein:
the spreader comprises a spreader outer sleeve, a lifting shaft capable of moving up and down relative to the spreader outer sleeve is arranged in the spreader outer sleeve in a penetrating manner, and the upper end of the lifting shaft penetrates through the spreader outer sleeve and is in driving connection with the leg socket supporting block;
it is interior to strut ware outer tube the epaxial cover of lifting is equipped with the board of lifting, it has lever spanner to articulate on the ware outer tube to strut, lever spanner drive is connected the board of lifting is close to lever spanner's one end, strut and be equipped with in the ware outer tube and prevent that the axle of lifting returns prevents moving back the structure.
2. The knee joint distraction device of claim 1, wherein the anti-back structure is an anti-back plate sleeved on the lifting shaft, a first abutment is arranged in the outer sleeve of the distraction device, and the anti-back plate is located on the first abutment.
3. The knee joint distracting device according to claim 2, wherein a first spring for pressing the retreat preventing plate against the first abutment is fitted over the lifting shaft in the distractor outer tube.
4. The knee joint distraction device of claim 2, wherein the anti-back-off plate is an L-shaped anti-back-off plate, the L-shaped anti-back-off plate comprises a transverse plate portion and a sloping plate portion, the transverse plate portion is sleeved on the lifting shaft, and the sloping plate portion is located outside the distractor outer sleeve.
5. The knee joint distraction device according to any one of claims 1-4, wherein said lever wrench is an L-shaped lever wrench, said L-shaped lever wrench comprises a cross bar portion and a vertical bar portion, the rear end of said cross bar portion is hinged on said distractor outer sleeve, the front end of said cross bar portion is provided with a connecting shaft for lifting said lifting plate, and said vertical bar portion is located outside said distractor outer sleeve.
6. The knee joint distraction device of claim 5, wherein a second abutment is provided in the distractor outer tube above the anti-back structure, the lifting plate is located on the second abutment, and a second spring for pressing the lifting plate against the second abutment is sleeved on the lifting shaft in the distractor outer tube.
7. The knee distraction device of claim 6, wherein a semicircular groove is formed in the second abutment at an end remote from the lever wrench;
and/or a first windowing is arranged above the anti-retreat structure on the outer sleeve of the distractor;
and/or a second window is arranged above the lifting plate on the outer sleeve of the spreader;
and/or the lower end of the dilator outer sleeve is provided with an observation window extending along the length direction of the dilator outer sleeve.
8. The knee joint distraction device of claim 5, wherein the leg socket support block is provided at a side thereof with a lateral connecting portion, the lateral connecting portion being provided with a shaft hole, and the upper end of the lifting shaft being inserted into the shaft hole.
9. A knee brace comprising a leg adjustment fixture and a knee distractor, wherein the knee distractor is as claimed in any one of claims 1 to 8.
10. An operating bed, comprising a bed body and a knee joint distraction device arranged on the bed body, wherein the knee joint distraction device is the knee joint distraction device according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122997513.2U CN216877021U (en) | 2021-12-01 | 2021-12-01 | Knee joint distraction device, knee joint support and operating table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122997513.2U CN216877021U (en) | 2021-12-01 | 2021-12-01 | Knee joint distraction device, knee joint support and operating table |
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| Publication Number | Publication Date |
|---|---|
| CN216877021U true CN216877021U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122997513.2U Active CN216877021U (en) | 2021-12-01 | 2021-12-01 | Knee joint distraction device, knee joint support and operating table |
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| CN (1) | CN216877021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220240983A1 (en) * | 2021-01-29 | 2022-08-04 | Globus Medical, Inc. | Systems and methods for leg stabilization during knee arthroplasty surgery |
-
2021
- 2021-12-01 CN CN202122997513.2U patent/CN216877021U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220240983A1 (en) * | 2021-01-29 | 2022-08-04 | Globus Medical, Inc. | Systems and methods for leg stabilization during knee arthroplasty surgery |
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Effective date of registration: 20220810 Address after: G357, 3rd floor, building 1, yard 9, CHENGWAN street, Haidian District, Beijing 100094 Patentee after: Beijing natong Medical Robot Technology Co.,Ltd. Address before: G358, 3rd floor, building 1, yard 9, CHENGWAN street, Haidian District, Beijing 100094 Patentee before: Beijing natong Medical Research Institute Co.,Ltd. Patentee before: Beijing natong Medical Robot Technology Co.,Ltd. |