CN217472046U - Intramedullary nail positioning and guiding device - Google Patents
Intramedullary nail positioning and guiding device Download PDFInfo
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- CN217472046U CN217472046U CN202220078249.4U CN202220078249U CN217472046U CN 217472046 U CN217472046 U CN 217472046U CN 202220078249 U CN202220078249 U CN 202220078249U CN 217472046 U CN217472046 U CN 217472046U
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Abstract
The utility model provides an intramedullary nail positioning and guiding device, belonging to the technical field of medical instruments. The utility model provides a pair of intramedullary nail positioning and guiding device, which comprises a locking device, an adjusting device and a guiding handle, wherein the locking device is connected with the intramedullary nail, the locking device is provided with a plurality of groups of positioning marks and positioning grooves, the adjusting device comprises a connecting piece, an adjusting button, an adjusting rod and an adjusting column, the adjusting column can roll around the locking device, the adjusting button is pressed, the adjusting rod slides into an adjusting chute, the limiting of the adjusting column is relieved, and the rotation of the connecting piece relative to the locking device is realized; the guide handle is provided with a plurality of groups of guide holes which are in one-to-one correspondence with the screw holes at the proximal end of the intramedullary nail. The utility model provides a pair of intramedullary nail positioning and guiding device, simple to use is convenient, rotates the direction handle, and the pilot hole and screw hole one-to-one are convenient for fixing bolt's implantation.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to intramedullary nail positioning and guiding device.
Background
Fracture between femoral tuberosity is a common fracture disease, at present generally use the femoral intramedullary nail to fix the fracture position, after the intramedullary nail is implanted in the patient, need use fixing screw to fix the intramedullary nail, the screw hole that distributes on the intramedullary nail this moment, it is internal to be located the patient, the direction of implantation of different screw hole department fixing screw is also different, it is very important how to carry out the location of femoral intramedullary nail and screw hole accurately, direct influence the quality of operation, the length of time of operation and patient's postoperative recovery. Generally, the proximal end of the intramedullary nail can be locked first, the position of the screw hole at the proximal end of the intramedullary nail can be estimated, or the screw hole can be searched with the help of an X-ray imaging device, but the X-ray can generate a large amount of radiation, which is harmful to the physical health of patients and medical staff, and in addition, the X-ray imaging device has poor sensitivity to the position of the screw hole, which can cause inaccurate positioning and even cause the fixing failure of the femoral intramedullary nail.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an intramedullary nail positioning and guiding device, which aims to solve the problem that the screw hole on the intramedullary nail is not easy to position and the fixing screw is not easy to install.
In order to achieve the above object, the utility model adopts the following technical scheme: an intramedullary nail positioning guide is provided, comprising: the locking device is detachably connected with the proximal end of the intramedullary nail, one end of the locking device, which is far away from the intramedullary nail, is provided with a plurality of groups of positioning marks and positioning grooves, the positioning grooves are arranged along the axial direction of the locking device, and the positioning marks and the positioning grooves are in one-to-one correspondence in the axial direction of the locking device;
the adjusting device comprises a connecting piece, one end of the connecting piece is sleeved on the outer side of the locking device, the connecting piece is rotatably connected with the locking device, and an adjusting button, an adjusting rod and an adjusting column are arranged in the connecting piece; the adjusting column is matched with the positioning groove and has a degree of freedom rotating around the axis of the adjusting column; the adjusting rod is positioned between the adjusting column and the adjusting button and respectively abutted against the outer peripheral surfaces of the adjusting column and the adjusting button; the adjusting button is arranged on the connecting piece in a sliding mode, and an adjusting sliding groove for avoiding the adjusting rod is formed in one side, close to the adjusting rod, of the adjusting button; the adjusting button is driven to slide on the connecting piece, so that the position of the adjusting sliding groove relative to the adjusting rod is adjusted, when the adjusting sliding groove is staggered with the adjusting rod, the adjusting button limits the adjusting column in the positioning groove by means of the adjusting rod, when the adjusting sliding groove is opposite to the adjusting rod, the limiting of the adjusting rod is removed, the adjusting column is separated from the positioning groove under the action of external force, and the connecting piece rotates relative to the locking device; and
the guide handle is provided with a plurality of groups of guide holes, the guide holes correspond to the screw holes at the near end of the intramedullary nail one by one, and the guide holes correspond to the positioning marks one by one.
In a possible implementation manner, the adjusting column is provided with an annular adjusting groove which is matched with the adjusting rod.
In a possible implementation, the annular adjusting groove is multiple in number and is arranged along the axial direction of the adjusting column.
In a possible implementation manner, the side wall of the positioning groove in the length direction of the adjusting column is defined as a first side wall and a second side wall, and the first side wall and one end, far away from the notch, of the second side wall are arranged at an included angle.
In a possible implementation manner, the circumferential direction of the locking device is provided with a rotating groove, the rotating groove is arranged in multiple groups of the middle parts of the positioning grooves, the depth of the rotating groove is smaller than that of the positioning grooves, and the adjusting column is provided with a rotating part which is arranged correspondingly to the rotating groove.
In a possible implementation manner, the adjusting button comprises a button body and a return spring, and a mounting groove for accommodating the button body and the return spring is arranged on the connecting piece; the reset spring is positioned on the inner side of the button body and used for resetting the button body.
In one possible embodiment, the groove depth of the adjusting groove decreases gradually towards the adjusting lever.
In a possible implementation manner, an identification groove is arranged on the connecting piece, and the identification groove is positioned on the outer side of the positioning mark.
In a possible implementation mode, the locking device comprises a locking rod and a locking piece, the locking piece is sleeved outside the locking rod, the positioning groove is formed in the locking piece, the locking rod is in threaded connection with the inner wall of the intramedullary nail, and the locking piece is connected with the proximal end of the intramedullary nail in a clamping mode.
In a possible implementation manner, the guiding handle comprises a connecting part and a handle, the connecting part is arranged at one end of the connecting part far away from the locking device, the handle is arranged at the other end of the connecting part, the handle is arranged in parallel with the proximal end of the intramedullary nail, and the guiding hole is arranged on the handle.
The utility model provides a pair of intramedullary nail positioning and guiding device has the advantages that:
compared with the prior art, the intramedullary nail locking device comprises a locking device, an adjusting device and a guide handle, wherein the locking device can be fixed at the near end of the intramedullary nail, the position deviation in the using process is avoided, the connecting piece is sleeved outside the locking device and can rotate relatively, an adjusting button, an adjusting rod and an adjusting column are arranged in the connecting piece, the adjusting column can roll around the locking device, the positioning groove can limit the rolling of the adjusting column, the position of the adjusting rod can be locked or unlocked by changing the position of the adjusting button, when the adjusting column is locked with the locking device, the adjusting device cannot rotate relative to the locking device, the adjusting column is unlocked with the locking device, the adjusting device rotates relative to the locking device, the adjusting device can only rotate at a specified angle under the action of the positioning groove, the screw holes at the near end of the intramedullary nail correspond to the positioning marks one by one to one, the adjusting device can rotate relative to the positioning marks, The fixing screw is in one-to-one correspondence with the positioning grooves and in one-to-one correspondence with the guide holes formed in the guide handle, so that the fixing screw is implanted and guided, the operation is simple, convenient and quick, the operation efficiency is improved, the damage to a patient is reduced, and the fixing screw is easy to popularize.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of an intramedullary nail positioning and guiding device and an intramedullary nail according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an intramedullary nail positioning and guiding device according to an embodiment of the present invention;
fig. 3 is a schematic right-view structural view of the intramedullary nail positioning and guiding device provided by the embodiment of the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
fig. 5 is a schematic structural diagram of an internal structure of a connecting member according to an embodiment of the present invention;
FIG. 6 is a schematic rear view of the structure of FIG. 5;
fig. 7 is a schematic structural diagram of a locking member and an adjusting column according to an embodiment of the present invention.
In the figure: 1. a locking lever; 2. a locking member; 201. positioning a mark; 202. positioning a groove; 203. a rotating groove; 204. a limiting block; 205. clamping the column; 3. a connecting member; 301. identifying a groove; 4. a button body; 401. adjusting the sliding chute; 5. adjusting a rod; 6. an adjustment column; 601. a first regulating groove; 602. a second regulating groove; 603. a rotating part; 7. a connecting portion; 8. a handle; 801. a guide hole; 9. a return spring; 10. the proximal end of the intramedullary nail.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 7, a specific embodiment of an intramedullary nail positioning and guiding device provided by the present invention is now described, which includes: the intramedullary nail locking device comprises a locking device, an adjusting device and a guide handle, wherein the locking device is detachably connected with the proximal end 10 of the intramedullary nail, one end of the locking device, which is far away from the intramedullary nail, is provided with a plurality of groups of positioning marks 201 and positioning grooves 202, the positioning grooves 202 are arranged along the axial direction of the locking device, and the positioning marks 201 and the positioning grooves 202 are in one-to-one correspondence in the axial direction of the locking device; the adjusting device comprises a connecting piece 3, one end of the connecting piece 3 is sleeved on the outer side of the locking device, the connecting piece 3 is rotatably connected with the locking device, and an adjusting button, an adjusting rod 5 and an adjusting column 6 are arranged in the connecting piece 3; the adjusting column 6 is matched with the positioning groove 202, and the adjusting column 6 has a degree of freedom of rotation around the axis thereof; the adjusting rod 5 is positioned between the adjusting column 6 and the adjusting button and respectively abutted against the outer peripheral surfaces of the adjusting column 6 and the adjusting button; the adjusting button is arranged on the connecting piece 3 in a sliding manner, and an adjusting chute 401 for avoiding the adjusting rod 5 is arranged on one side of the adjusting button close to the adjusting rod 5; the adjusting button is driven to slide on the connecting piece 3, so that the position of the adjusting chute 401 relative to the adjusting rod 5 is adjusted, when the adjusting chute 401 is staggered with the adjusting rod 5, the adjusting button limits the adjusting column 6 in the positioning groove 202 by means of the adjusting rod 5, when the adjusting chute 401 is over against the adjusting rod 5, the limiting on the adjusting rod 5 is removed, the adjusting column 6 is separated from the positioning groove 202 under the action of external force, and the connecting piece 3 rotates relative to the locking device; the guiding handle is provided with a plurality of groups of guiding holes 801, the guiding holes 801 correspond to the screw holes of the proximal end 10 of the intramedullary nail one by one, and the guiding holes 801 correspond to the positioning marks 201 one by one.
Compared with the prior art, the intramedullary nail positioning and guiding device provided by the utility model comprises a locking device, an adjusting device and a guiding handle, wherein the locking device can be fixed at the near end 10 of the intramedullary nail to avoid the position deviation in the using process, a connecting piece 3 is sleeved at the outer side of the locking device and can rotate relatively, an adjusting button, an adjusting rod 5 and an adjusting column 6 are arranged in the connecting piece 3, the adjusting column 6 can roll around the locking device, the positioning groove 202 can limit the rolling of the adjusting column 6, the position change of the adjusting button can realize the locking or unlocking of the adjusting rod 5 to the position of the adjusting column 6, when the adjusting column 6 is locked with the locking device, the adjusting device can not rotate relative to the locking device, the adjusting column 6 is unlocked from the locking device, the adjusting device rotates relative to the locking device, under the action of the positioning groove 202, the adjusting device can only rotate by a specified angle, the screw holes of the proximal intramedullary nail end 10 correspond to the positioning marks 201, the positioning grooves 202 and the guide holes 801 arranged on the guide handle one by one, so that the implantation guide of the fixing screws is realized, the operation is simple, convenient and quick, the operation efficiency is improved, the damage to a patient is reduced, and the popularization is easy.
Specifically, please refer to fig. 1 to 7, which includes a locking device, an adjusting device and a guiding handle, wherein the locking device is detachably connected to the proximal end 10 of the intramedullary nail, so as to prevent the device from rotating and affecting the positioning of the screw hole during the use process, one end of the locking device away from the intramedullary nail is provided with a plurality of sets of positioning marks 201 and positioning slots 202, the positioning marks 201 are convenient for observation, the positioning slots 202 are circumferentially arranged on the locking device and are parallel to the axis of the locking device, the positioning marks 201 correspond to the positioning slots 202 one by one, the outer side of one end of the locking device away from the intramedullary nail is sleeved with a connecting member 3 capable of rotating relative to the locking device, the rotating angle and position of the connecting member 3 can be determined by the relative position of the connecting member 3 and the positioning marks 201, the inside of the connecting member 3 is provided with an adjusting button, an adjusting rod 5 and an adjusting rod 6, the adjusting rod 6 is arranged on the side wall of the locking device, can roll on the side wall of the locking device, the positioning groove 202 limits the rotation of the adjusting column 6, the adjusting rod 5 is arranged perpendicular to the adjusting column 6, the adjusting button is arranged perpendicular to one side of the adjusting rod 5 far away from the adjusting column 6, the adjusting button is arranged in the third mounting groove in a sliding manner, the first end of the adjusting button is arranged outside the connecting piece 3, an adjusting chute 401 is arranged at one side of the adjusting button close to the adjusting rod 5, the adjusting rod 5 abuts against the side wall of the adjusting button in a non-pressed state, the adjusting rod 5 can be limited in the positioning groove 202 in a matching manner to avoid the displacement of the adjusting column 6, the adjusting button is pressed, the adjusting rod 5 slides into the adjusting chute 401 to remove the limitation on the position of the adjusting column 6, the connecting piece 3 is rotated, the adjusting column 6 can roll out of the positioning groove 202 to realize the rotation of the connecting piece 3 relative to the locking device, a plurality of groups of guide holes 801 are arranged on the guide handle, the guiding holes 801 correspond to the screw holes of the proximal end 10 of the intramedullary nail one by one, the guiding holes 801 correspond to the positioning marks 201 one by one, the handle 8 rotates at a specified angle relative to the locking device under the limitation of the positioning groove 202, and the guiding holes 801 corresponding to the screw holes are selected according to the rotating angle to realize the guiding work of the fixing screws.
As a specific embodiment of the intramedullary nail positioning and guiding device provided by the present invention, please refer to fig. 3 to 7, an annular adjusting groove is provided on the adjusting post 6 and is installed in cooperation with the adjusting rod 5.
Specifically, referring to fig. 3 to 7, the adjusting column 6 is spindle-shaped, an annular adjusting groove is formed in the adjusting column 6, and the adjusting rod 5 is clamped into the annular adjusting groove to limit the adjusting column 6, thereby increasing the stability of the device.
Referring to fig. 7, a plurality of annular adjusting grooves are formed along the axial direction of the adjusting post 6.
Specifically, referring to fig. 7, two annular adjusting grooves are defined as a first adjusting groove 601 and a second adjusting groove 602, so that the stability of the device in use is increased, the area of the rotating portion 603 is reduced, the contact area between the adjusting column 6 and the locking device is reduced, the friction force between the adjusting column 6 and the locking device is reduced, and the device is more convenient to use.
Referring to fig. 6 to 7, the side wall of the positioning groove 202 in the length direction of the adjusting post 6 is defined as a first side wall and a second side wall, and the end of the first side wall and the end of the second side wall away from the notch are disposed at an included angle.
Specifically, referring to fig. 6 to 7, the first sidewall and the second sidewall of the positioning groove 202 are disposed opposite to each other and form an included angle, so that the adjusting column 6 can roll out from the positioning groove 202 conveniently, and the device is more convenient to use.
As a specific embodiment of the intramedullary nail positioning and guiding device provided by the present invention, please refer to fig. 6 to 7, the circumferential direction of the locking device is provided with a rotation groove 203, the rotation groove 203 is disposed in multiple groups at the middle of the positioning groove 202, the groove depth of the rotation groove 203 is smaller than the groove depth of the positioning groove 202, and the adjusting column 6 is provided with a rotation portion 603 corresponding to the rotation groove 203.
Specifically, referring to fig. 6 to 7, the locking device is circumferentially provided with an annular rotating groove 203, the rotating portion 603 can roll on the rotating groove 203 relatively, and the groove depth of the rotating groove 203 is smaller than that of the positioning groove 202, so that the adjusting column 6 can roll out of the positioning groove 202 conveniently, and the device is more convenient to use.
As a specific embodiment of the intramedullary nail positioning and guiding device provided by the present invention, please refer to fig. 3 to 4, the adjusting button includes a button body 4 and a return spring 9, and the connecting member 3 is provided with a mounting groove for accommodating the button body 4 and the return spring 9; the return spring 9 is located on the inner side of the button body 4 and used for returning the button body 4.
Specifically, referring to fig. 3 to 4, a return spring 9 is arranged between the button body 4 and the bottom of the mounting groove, when the rotation is completed, the pressure on the button body 4 is released, the button body 4 slides outwards under the action of the return spring 9, the adjusting rod 5 slides out of the adjusting chute 401, the adjusting column 6 is limited, the device is prevented from rotating, and the stability of the device is improved.
As a specific embodiment of the intramedullary nail positioning and guiding device provided by the present invention, the groove depth of the adjusting sliding groove 401 gradually decreases along with the approach of the adjusting rod 5.
Specifically, referring to fig. 3 to 6, the depth of the adjusting chute 401 gradually decreases as the button body 4 approaches one end of the return spring 9, so that the adjusting lever 5 can slide in or out of the adjusting chute 401, and the convenience of the device is improved.
Referring to fig. 1 to 3, an identification groove 301 is disposed on the connecting member 3, and the identification groove 301 is located outside the positioning mark 201.
Specifically, referring to fig. 1 to 3, the connecting member 3 is provided with an identification groove 301, and different positioning marks 201 are clamped into the identification groove 301, so that a corresponding rotation angle can be determined, and a corresponding guide hole 801 is selected to perform a screw fixing guiding operation.
As a specific embodiment of the intramedullary nail positioning and guiding device provided by the present invention, please refer to fig. 2 and 5, the locking device includes a locking rod 1 and a locking member 2, the locking member 2 sleeves the locking rod 1, the positioning groove 202 is disposed on the locking member 2, the locking rod 1 is in threaded connection with the inner wall of the intramedullary nail, the locking member 2 is in engagement with the proximal end 10 of the intramedullary nail.
Specifically, referring to fig. 2 and 5, the locking device includes a locking rod 1 and a locking member 2, the locking rod 1 is in threaded connection with the inner wall of the intramedullary nail to increase the stability of connection and prevent the device from separating from the intramedullary nail, the locking member 2 is clamped with the proximal end 10 of the intramedullary nail, and a clamping column 205 matched with a groove on the side wall of the intramedullary nail is arranged on the locking member 2 to prevent the device from rotating relative to the intramedullary nail.
As a specific embodiment of the intramedullary nail positioning and guiding device provided by the present invention, please refer to fig. 1 to 4, the guiding handle includes a connecting portion 7 and a handle 8, the connecting portion 7 is disposed on the connecting portion 3, the locking device is kept away from one end of the locking device, the handle 8 is disposed on the other end of the connecting portion 7, the handle 8 is disposed in parallel with the proximal end 10 of the intramedullary nail, and the guiding hole 801 is disposed on the handle 8.
Specifically, referring to fig. 1 to 4, the guiding handle includes a connecting portion 7 and a handle 8, the connecting portion 7 connects the connecting member 3 and the handle 8, and the guiding hole 801 is disposed on the handle 8 for facilitating operation.
Referring to fig. 5, the locking member 2 is provided with a limiting block 204, and during the rotation of the connecting member 3, the limiting block 204 cooperates with the adjusting post 6 to limit the rotation angle, so as to prevent the device from excessively rotating during the use.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An intramedullary nail positioning guide device, comprising:
the locking device is detachably connected with the proximal end of the intramedullary nail, one end of the locking device, which is far away from the intramedullary nail, is provided with a plurality of groups of positioning marks and positioning grooves, the positioning grooves are arranged along the axial direction of the locking device, and the positioning marks and the positioning grooves are in one-to-one correspondence in the axial direction of the locking device;
the adjusting device comprises a connecting piece, one end of the connecting piece is sleeved on the outer side of the locking device, the connecting piece is rotatably connected with the locking device, and an adjusting button, an adjusting rod and an adjusting column are arranged in the connecting piece; the adjusting column is matched with the positioning groove and has a degree of freedom rotating around the axis of the adjusting column; the adjusting rod is positioned between the adjusting column and the adjusting button and respectively abutted against the outer peripheral surfaces of the adjusting column and the adjusting button; the adjusting button is arranged on the connecting piece in a sliding mode, and an adjusting sliding groove for avoiding the adjusting rod is formed in one side, close to the adjusting rod, of the adjusting button; the adjusting button is driven to slide on the connecting piece, so that the position of the adjusting chute relative to the adjusting rod is adjusted, when the adjusting chute is staggered with the adjusting rod, the adjusting button limits the adjusting column in the positioning groove by means of the adjusting rod, when the adjusting chute is over against the adjusting rod, the limiting of the adjusting rod is removed, the adjusting column is separated from the positioning groove under the action of external force, and the connecting piece rotates relative to the locking device; and
the guide handle is provided with a plurality of groups of guide holes, the guide holes correspond to the screw holes at the near end of the intramedullary nail one by one, and the guide holes correspond to the positioning marks one by one.
2. The intramedullary nail positioning guide of claim 1, wherein the adjustment post has an annular adjustment slot for mating with the adjustment rod.
3. The intramedullary nail positioning guide of claim 2, wherein the number of annular adjustment slots is plural and is arranged along the axial direction of the adjustment post.
4. The intramedullary nail positioning guide of claim 3, wherein the side walls of the positioning slot along the length of the adjustment post define a first side wall and a second side wall, the first side wall and the second side wall being angled away from the slot.
5. The intramedullary nail positioning and guiding device according to claim 4, wherein the locking device is provided with a rotation groove along the circumference thereof, the rotation groove is disposed at the middle of the plurality of positioning grooves, the depth of the rotation groove is smaller than that of the positioning grooves, and the adjusting post is provided with a rotation portion corresponding to the rotation groove.
6. The intramedullary nail positioning guide of claim 1, wherein the adjustment button comprises a button body and a return spring, and the connecting member has a mounting groove for receiving the button body and the return spring; the reset spring is positioned on the inner side of the button body and used for resetting the button body.
7. The intramedullary nail positioning guide of claim 1, wherein the groove depth of the adjustment runner decreases as it approaches the adjustment rod.
8. The intramedullary nail positioning guide of claim 1, wherein the connector is provided with an identification groove located outside the positioning mark.
9. The intramedullary nail positioning and guiding device according to claim 1, wherein the locking device comprises a locking rod and a locking member, the locking member is sleeved outside the locking rod, the positioning groove is disposed on the locking member, the locking rod is in threaded connection with the inner wall of the intramedullary nail, and the locking member is clamped with the proximal end of the intramedullary nail.
10. The intramedullary nail positioning guide of claim 1, wherein the guide handle comprises a connecting portion and a handle, the connecting portion is disposed at an end of the connecting member remote from the locking device, the handle is disposed at an opposite end of the connecting portion, the handle is disposed parallel to the proximal end of the intramedullary nail, and the guide hole is disposed on the handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220078249.4U CN217472046U (en) | 2022-01-12 | 2022-01-12 | Intramedullary nail positioning and guiding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220078249.4U CN217472046U (en) | 2022-01-12 | 2022-01-12 | Intramedullary nail positioning and guiding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217472046U true CN217472046U (en) | 2022-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220078249.4U Active CN217472046U (en) | 2022-01-12 | 2022-01-12 | Intramedullary nail positioning and guiding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217472046U (en) |
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2022
- 2022-01-12 CN CN202220078249.4U patent/CN217472046U/en active Active
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