CN117100379A - Intramedullary nail positioning holder convenient to operate - Google Patents
Intramedullary nail positioning holder convenient to operate Download PDFInfo
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- CN117100379A CN117100379A CN202311177301.7A CN202311177301A CN117100379A CN 117100379 A CN117100379 A CN 117100379A CN 202311177301 A CN202311177301 A CN 202311177301A CN 117100379 A CN117100379 A CN 117100379A
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- nail
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- 230000005540 biological transmission Effects 0.000 claims abstract description 82
- 238000013461 design Methods 0.000 claims abstract description 17
- 230000007704 transition Effects 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 210000004872 soft tissue Anatomy 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 4
- 206010020100 Hip fracture Diseases 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 210000000689 upper leg Anatomy 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000002513 implantation Methods 0.000 description 5
- 208000010392 Bone Fractures Diseases 0.000 description 4
- 206010017076 Fracture Diseases 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 208000016285 Movement disease Diseases 0.000 description 1
- 208000008589 Obesity Diseases 0.000 description 1
- 208000002847 Surgical Wound Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000020824 obesity Nutrition 0.000 description 1
- UZUFPBIDKMEQEQ-UHFFFAOYSA-N perfluorononanoic acid Chemical compound OC(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F UZUFPBIDKMEQEQ-UHFFFAOYSA-N 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
- A61B17/921—Impactors or extractors, e.g. for removing intramedullary devices for intramedullary devices
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses an intramedullary nail positioning holder convenient to operate, which belongs to the technical field of medical appliances and particularly comprises a crank, a holding handle and a transmission component for installing a femoral intramedullary nail, wherein the transmission component is arranged in the crank; the crank is formed by mutually buckling and assembling a left shell and a right shell, and the handle is fixed at the end part of the right shell; the holding handle consists of a holding part and a locking nail positioning disc; the transmission assembly consists of a front transmission rod, a rear transmission rod and an operation knob. The invention has simple and reasonable overall design, adopts the bent holding handle to be combined with the crank for fixing the intramedullary nail, so that the whole holding instrument structure forms an approximate U-shaped structure, can effectively avoid the obstruction of fat or soft tissue at the incision position to the operation of the holding instrument in the operation of the intertrochanteric fracture of the femur of the obese patient, can facilitate the positioning holding operation of the operation, and the holder itself is provided with the intramedullary nail installation positioning mechanism, thereby being simpler and faster to operate.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to an intramedullary nail positioning holder convenient to operate.
Background
For the treatment of intertrochanter fracture of femur, the common practice in the market at present mainly is mainly with femoral intramedullary nails such as PFNA, and its nail body mainly comprises main nail, proximal end locking nail and distal end locking nail triplex, and the installation of intramedullary nail is in order to accurate location locking nail hole's position, and its location is held the apparatus and is indispensable apparatus.
At present, a holding instrument for installing an intramedullary nail is mainly of a straight handle design, the intramedullary nail is fixed in a connecting hole at the front end of a grip through a screw and forms a certain angle with the grip, but in the intramedullary nail implanting operation for obese patients, because the open position of a femoral intertrochanteric fracture is positioned at the outer side of a crotch, the fat layer at the position is thicker, the holding position is easily interfered by the fat layer or soft tissue, the holding instrument is difficult to operate during holding, and the deviation of the intramedullary nail implanting operation position is easily caused.
In addition, the current straight-handle type intramedullary nail holding instrument needs to be installed by using a screw matching tool alone when the main intramedullary nail is installed, and the operation steps are complicated.
Therefore, a bending intramedullary nail positioning and holding device convenient to operate is designed.
Disclosure of Invention
The invention aims to provide an intramedullary nail positioning holder which is convenient to operate and is used for solving the problems in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides an intramedullary nail location holder of convenient operation, including the crank, handle and be used for installing the drive assembly of femoral intramedullary nail, wherein, the crank contains preceding tip and tail end, and adopt crooked arc transitional design between preceding tip and the tail end for form the contained angle between preceding tip and the tail end, the handle is held in the crooked design again, can make whole instrument of holding form approximate U-shaped structure, can effectively avoid fat layer or soft tissue of fat patient incision position in carrying out the femoral intertrochanter fracture operation, thereby ensure that femoral intramedullary nail can carry out accurate location when implanting, avoid the deviation to appear in femoral intramedullary nail, the femoral intramedullary nail is mainly by the main nail body that is used for carrying out the connection with the crank tip, and near-end hole and distal end hole have been seted up respectively at the both ends of main nail body.
Aiming at the traditional positioning holding instrument for intramedullary nail implantation at present, when a main nail of an intramedullary nail is installed, a special locking bolt or screw is needed, and meanwhile, an independent auxiliary instrument (medical operation fastening instrument) is needed, the whole process is complicated, and in order to save the assembly time between the intramedullary nail and the positioning holding instrument and simplify the assembly process, the transmission component is installed in a crank; the driving assembly consists of a front driving rod, a rear driving rod and an operation knob, wherein the front driving rod and the rear driving rod are respectively positioned in the tail end and the front end of the crank, the front driving rod and the rear driving rod are in driving connection by adopting a connecting piece, the operation knob is fixed at the end part of the front driving rod, the end part of the rear driving rod is integrally formed with a nail body connecting screw, and the size of the nail body connecting screw is consistent with the size of an assembly connecting hole of the end part of the selected intramedullary nail.
Because the core transmission part of whole drive assembly all is located inside the crank, for convenient postoperative to the maintenance and disinfect to the inside detail structure of holding the apparatus, its crank can be designed as split type structure, specifically:
the crank is formed by mutually buckling and assembling a left shell and a right shell, and in order to facilitate the combination and disassembly between the left shell and the right shell, clamping grooves and clamping heads which are matched with each other are respectively formed in the edges of the two side grooves of the left shell and the right shell.
In order to enable the whole positioning holding instrument to avoid fat or soft tissue at the surgical incision position, the holding handle is fixed at the end part of the right shell; the holding handle consists of a holding part and a locking nail positioning disc; the locking nail positioning disc and the holding part are integrally formed, the back surface of the locking nail positioning disc is integrally formed with a reinforcing rib, the locking nail positioning disc is parallel to the front end part of the crank in the same direction,
further, the locking nail positioning disc is provided with a proximal locking nail positioning hole and a distal locking nail positioning hole respectively, the proximal locking nail positioning hole on the holding handle is designed by adopting an inclined hole, and coaxial designs are adopted between the proximal locking nail positioning hole and the proximal hole on the femoral intramedullary nail and between the distal locking nail positioning hole and the distal hole on the femoral intramedullary nail.
Further, for convenience, the transmission assembly and the crank are effectively assembled and combined, and the left shell and the right shell are of semicircular tube groove designs in cross section.
Furthermore, the left shell and the right shell are positioned at the center of one end of the middle front end part of the crank, are respectively integrally formed with a positioning block and are used for being clamped with a locking groove of the assembling end of the femoral intramedullary nail, so that the femoral intramedullary nail is positioned on one hand, and on the other hand, the femoral intramedullary nail is finally installed in order to be matched with a transmission assembly.
Furthermore, in order to enable the transmission assembly to effectively transmit power in the crank, a first positioning groove and a second positioning groove are formed in the left shell and the right shell at positions corresponding to the front end part and the tail end part of the crank; and the positions of the first positioning groove and the second positioning groove, which correspond to the inner side of the tail end part in the crank, of the outer part of the front transmission rod are respectively provided with a front positioning ring and a front positioning bearing, and the positions of the first positioning groove and the second positioning groove, which correspond to the inner side of the front end part in the crank, of the outer part of the rear transmission rod are respectively provided with a rear positioning ring and a rear positioning bearing.
Further, the front positioning ring and the rear positioning ring are respectively sheathed with the surfaces of the front transmission rod and the rear transmission rod in a sliding way, and the front positioning ring and the rear positioning ring are clamped with a first positioning groove at the corresponding position; and further, the inner rings of the front positioning bearing and the rear positioning bearing are fixedly connected with the corresponding front transmission rod and rear transmission rod in a sleeved mode, and the front positioning bearing and the rear positioning bearing on the front transmission rod and the rear transmission rod are respectively clamped with the second positioning groove at the corresponding position inside the crank.
Further, the connecting piece specifically includes two integrated into one piece before the spread rod and the spread rod tip's spread groove behind respectively to and the transition piece, be the angle arrangement that crosses between preceding spread rod and the spread rod tip spread groove behind, the transition piece is located between two spread grooves, adopt two round pin axles that are cross angle distribution on the transition piece to rotate between transition piece and the two spread grooves and connect.
The beneficial effects are that:
the invention has simple and reasonable overall design, changes the traditional straight-handle type intramedullary nail holding instrument design, adopts the bent holding handle to be combined with the crank for fixing the intramedullary nail, so that the whole holding instrument structure forms an approximate U-shaped structure, can effectively avoid the obstruction of fat or soft tissue at the incision position to the operation of the holding instrument in the operation of femoral intertrochanter fracture for obese patients, can facilitate the operation doctor to implement effective and stable positioning holding operation on the implantation of the intramedullary nail through the holding instrument, and can avoid the problem of insufficient implantation precision of the intramedullary nail caused by obesity, fat layer or soft tissue of the patients.
Compared with the traditional intramedullary nail holding instrument, the invention has the advantages that the main nail of the intramedullary nail is installed without the assistance of other bolts and tools, and the holder is provided with the intramedullary nail installation and positioning mechanism, so that the operation is simpler and faster.
Drawings
FIG. 1 is a schematic view of the structure of the present invention after connection with a femoral intramedullary nail;
FIG. 2 is a schematic diagram of an exploded structure of the present invention;
FIG. 3 is a schematic diagram of an exploded structure of the present invention;
fig. 4 is a schematic diagram of a transmission assembly according to the present invention.
In the figure:
1. a crank; 101. a left housing; 102. a right housing; 103. a first positioning groove; 104. a second positioning groove; 105. a clamping groove; 106. a chuck; 107. a positioning block;
2. a holding handle; 201. a grip portion; 202. locking nail positioning disk; 203. reinforcing ribs; 204. a proximal locking pin positioning hole; 205. a distal locking pin positioning hole;
3. a transmission assembly; 301. a front transmission rod; 302. a rear drive rod; 303. a front positioning ring; 304. a rear positioning ring; 305. a front positioning bearing; 306. a rear positioning bearing; 307. a connecting groove; 308. a transition block; 309. a pin shaft; 310. the nail body is connected with a screw; 311. operating a knob;
4. femoral intramedullary nails; 401. a main nail body; 402. a proximal aperture; 403. a distal aperture.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly described below with reference to the accompanying drawings and the description of the embodiments or the prior art, and it is obvious that the following description of the structure of the drawings is only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art. It should be noted that the description of these examples is for aiding in understanding the present invention, but is not intended to limit the present invention.
Embodiment one:
aiming at the problems that the traditional straight shank type intramedullary nail positioning and holding instrument is easy to be hindered and interfered by fat or soft tissue fattened outside the crotch of a patient in the femoral intertrochanteric fracture operation of the obese patient at present, and the femoral intramedullary nail 4 can not be rapidly and stably positioned accurately through the positioning and holding device, the problems are solved, in order to solve the defects that the holding device is difficult to hold and the operation is unchanged and the like due to fat or soft tissue fatteness at the incision position of the obese patient in the operation, the novel intramedullary nail positioning and holding instrument is designed, the operation obstacle caused by fat layer or soft tissue at the incision position of the operation can be effectively solved, and meanwhile, the assembly difficulty (or complexity) between the intramedullary nail and the positioning and holding instrument can be simplified, and the specific scheme is as follows:
as shown in fig. 1, this embodiment provides an intramedullary nail positioning holder convenient to operate, including a crank 1, a holding handle 2 and a transmission component 3 for installing a femoral intramedullary nail 4, where the crank 1 includes a front end portion and a tail end portion, and a curved arc transition design is adopted between the front end portion and the tail end portion, so that an included angle is formed between the front end portion and the tail end portion, and the holding handle 2 with the curved design is matched, so that the whole holding apparatus forms an approximately U-shaped structure, and can effectively avoid a fat layer or soft tissue at an incision position of an obese patient in a femoral intertrochanter fracture operation, thereby ensuring that the femoral intramedullary nail 4 can be accurately positioned during implantation, avoiding deviation of the femoral intramedullary nail 4, and the femoral intramedullary nail 4 is mainly formed by a main nail body 401 for connecting with the end portion of the crank 1, and proximal holes 402 and distal holes 403 are respectively formed at two ends of the main nail body 401.
As shown in fig. 2, 3 and 4, aiming at the traditional positioning holding instrument for intramedullary nail implantation, when a main nail of an intramedullary nail is installed, a special locking bolt or screw is needed, and meanwhile, a separate auxiliary instrument (medical operation fastening instrument) is needed, the whole process is complicated, and in order to save the assembly time between the intramedullary nail and the positioning holding instrument and simplify the assembly process, a transmission assembly 3 is installed in a crank 1; the transmission assembly 3 is composed of a front transmission rod 301, a rear transmission rod 302 and an operation knob 311, wherein the front transmission rod 301 and the rear transmission rod 302 are respectively positioned in the tail end part and the front end part of the crank 1, the front transmission rod 301 and the rear transmission rod 302 are in transmission connection by adopting a connecting piece, the operation knob 311 is fixed at the end part of the front transmission rod 301, the end part of the rear transmission rod 302 is integrally formed with a nail body connecting screw 310, and the size of the nail body connecting screw 310 is consistent with the size of an assembly connecting hole of the selected intramedullary nail end part.
Further, as shown in fig. 2 and 3, in order to make the whole holding apparatus structure form an approximate U-shaped structure, so that the holding apparatus structure can avoid fat or soft tissue at the operation incision position, the intramedullary nail is convenient to implant and position, and the holding handle 2 is fixed at the end part of the right shell 102; wherein, the holding handle 2 consists of a holding part 201 and a locking nail positioning disc 202; the locking nail positioning disc 202 and the holding part 201 are integrally formed, the reinforcing rib 203 is integrally formed on the back surface of the locking nail positioning disc 202, the locking nail positioning disc 202 is parallel to the front end part of the crank 1 in the same direction, further, in order to enable the whole positioning holding device to effectively position and fix the main nail structure of the femoral intramedullary nail 4 when the femoral intramedullary nail 4 is implanted, the main nail body 401 of the whole intramedullary nail is convenient to accurately drill holes from the outer side of a bone rod after entering the bone holes, the proximal locking nail positioning hole 204 and the distal locking nail positioning hole 205 are respectively formed in the locking nail positioning disc 202, the proximal locking nail positioning hole 204 on the holding handle 2 is designed by adopting inclined holes, and the proximal locking nail positioning hole 204 and the proximal end hole 402 on the femoral intramedullary nail 4 and the distal locking nail positioning hole 205 and the distal end hole 403 on the femoral intramedullary nail 4 are designed coaxially, so that the whole structure design is simpler and faster than the traditional measurement method positioning method.
Embodiment two:
because the core transmission part of the whole transmission assembly 3 is positioned inside the crank 1, the crank 1 can be designed into a split structure for convenient maintenance, sterilization and disinfection of the detail structure inside the holding instrument after operation, and is specifically as follows:
on the basis of the technology described in the first embodiment, as shown in fig. 2 and 3, the crank 1 is divided into two parts, which are respectively formed by mutually fastening and assembling the left casing 101 and the right casing 102, and for the convenience of effectively assembling and combining the transmission assembly 3 and the crank 1, the left casing 101 and the right casing 102 are respectively semicircular tube groove designs in cross section, and for the convenience of assembling and disassembling the left casing 101 and the right casing 102, the two side grooves of the left casing 101 and the right casing 102 are respectively provided with a clamping groove 105 and a clamping head 106 which are mutually matched along the positions.
Meanwhile, in order to ensure that after the femoral intramedullary nail 4 is effectively assembled with a positioning holding device, a proximal locking nail positioning hole 204 and a distal locking nail positioning hole 205 on the femoral intramedullary nail 4 can always form a fixed angle and a fixed position with a proximal hole 402 and a distal hole 403 on the holding handle 2, so that subsequent drilling holes for installing the proximal locking nail and the distal locking nail are conveniently and accurately formed on the outer side of a femoral stem of a patient through the holding device, a positioning block 107 is required to be integrally formed at the central positions of one ends of the front ends of the left shell 101 and the right shell 102 in the crank 1 respectively and used for being clamped with a locking groove of the assembling end of the femoral intramedullary nail 4, on one hand, the positioning effect is achieved on the femoral intramedullary nail 4, and on the other hand, the installation of the femoral intramedullary nail 4 is finally completed by matching with the transmission component 3.
Example III
In order to enable an efficient power transmission of the transmission assembly 3 within the crank 1.
As shown in fig. 2 and 4, in the present embodiment, on the basis of the techniques described in the first and second embodiments, a first positioning groove 103 and a second positioning groove 104 are formed in the left and right cases 101 and 102 at positions corresponding to the front and rear ends of the crank 1; and, a front positioning ring 303 and a front positioning bearing 305 are respectively arranged at the positions of the front transmission rod 301 corresponding to the first positioning groove 103 and the second positioning groove 104 inside the tail end part in the crank 1, and a rear positioning ring 304 and a rear positioning bearing 306 are respectively arranged at the positions of the rear transmission rod 302 corresponding to the first positioning groove 103 and the second positioning groove 104 inside the front end part in the crank 1.
In order to ensure that the transmission assembly 3 can always keep a stable power transmission effect in the crank 1, a sliding sleeve connection design is adopted between the front positioning ring 303 and the rear positioning ring 304 of the transmission assembly and the surfaces of the front transmission rod 301 and the rear transmission rod 302 respectively, and the front positioning ring 303 and the rear positioning ring 304 are clamped with the first positioning groove 103 at the corresponding positions; and further, the inner rings of the front positioning bearing 305 and the rear positioning bearing 306 are fixedly sleeved with the corresponding front transmission rod 301 and rear transmission rod 302, and the front positioning bearing 305 and the rear positioning bearing 306 on the front transmission rod 301 and the rear transmission rod 302 are respectively clamped with the second positioning groove 104 at the corresponding position inside the crank 1.
In addition, as shown in fig. 4, in order to overcome the movement disorder of the transmission assembly 3 caused by the angle problem of the crank 1, the front transmission rod 301 and the rear transmission rod 302 in the transmission assembly 3 need to be assembled and connected by adopting a universal joint structure, and the connecting piece specifically comprises two connecting grooves 307 which are respectively and integrally formed at the end parts of the front transmission rod 301 and the rear transmission rod 302, and a transition block 308, wherein the connecting grooves 307 at the end parts of the front transmission rod 301 and the rear transmission rod 302 are arranged at staggered angles, the transition block 308 is positioned between the two connecting grooves 307, and the transition block 308 is rotationally connected with the two connecting grooves 307 by adopting two pin shafts 309 which are distributed at the cross angles on the transition block 308.
Finally, it should be noted that: the foregoing description is only of the preferred embodiments of the invention and is not intended to limit the scope of the invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An intramedullary nail positioning holder convenient to operate, comprising a crank (1), a holding handle (2) and a transmission assembly (3) for installing a femoral intramedullary nail (4), wherein the transmission assembly (3) is arranged inside the crank (1);
the crank (1) is formed by mutually buckling and assembling a left shell (101) and a right shell (102), and the holding handle (2) is fixed at the end part of the right shell (102);
the holding handle (2) consists of a holding part (201) and a locking nail positioning disc (202); the locking nail positioning disc (202) is respectively provided with a proximal locking nail positioning hole (204) and a distal locking nail positioning hole (205);
the transmission assembly (3) consists of a front transmission rod (301), a rear transmission rod (302) and an operation knob (311), wherein the front transmission rod (301) and the rear transmission rod (302) are in transmission connection through a connecting piece, the operation knob (311) is fixed at the end part of the front transmission rod (301), and a nail body connecting screw (310) is integrally formed at the end part of the rear transmission rod (302).
2. An intramedullary nail positioning holder according to claim 1, characterized in that the crank (1) comprises a leading end portion and a trailing end portion, wherein a curved arc transition is provided between the leading end portion and the trailing end portion.
3. The intramedullary nail positioning holder convenient to operate according to claim 1, wherein the left shell (101) and the right shell (102) are of semicircular tube groove design in cross section, two side grooves of the left shell (101) and the right shell (102) are respectively provided with a clamping groove (105) and a clamping head (106) which are matched with each other along the positions, and one end center position of the front end part of the left shell (101) and the right shell (102) positioned in the crank (1) is respectively provided with a positioning block (107) in an integrated mode.
4. An intramedullary nail positioning holder convenient to operate according to claim 3, wherein the left housing (101) and the right housing (102) are provided with a first positioning groove (103) and a second positioning groove (104) at positions corresponding to the front end part and the tail end part of the crank (1).
5. The intramedullary nail positioning holder convenient to operate according to claim 1, wherein the front transmission rod (301) and the rear transmission rod (302) are respectively located inside the tail end part and the front end part of the crank (1), a front positioning ring (303) and a front positioning bearing (305) are respectively arranged at positions of the front transmission rod (301) corresponding to a first positioning groove (103) and a second positioning groove (104) inside the tail end part of the crank (1), and a rear positioning ring (304) and a rear positioning bearing (306) are respectively arranged at positions of the rear transmission rod (302) corresponding to a first positioning groove (103) and a second positioning groove (104) inside the front end part of the crank (1).
6. The intramedullary nail positioning holder convenient to operate according to claim 5, wherein a sliding sleeve connection design is adopted between the surfaces of the front positioning ring (303) and the rear positioning ring (304) and the surfaces of the front transmission rod (301) and the rear transmission rod (302), the front positioning ring (303) and the rear positioning ring (304) are clamped with the first positioning groove (103) at the corresponding position, the inner rings of the front positioning bearing (305) and the rear positioning bearing (306) are fixedly sleeved with the corresponding front transmission rod (301) and the corresponding rear transmission rod (302), and the front positioning bearing (305) and the rear positioning bearing (306) on the front transmission rod (301) and the rear transmission rod (302) are clamped with the second positioning groove (104) at the corresponding position inside the crank (1) respectively.
7. The intramedullary nail positioning holder of claim 1, wherein the connecting member comprises two connecting grooves (307) integrally formed at the ends of the front transmission rod (301) and the rear transmission rod (302), respectively, and a transition block (308), wherein the connecting grooves (307) at the ends of the front transmission rod (301) and the rear transmission rod (302) are arranged at an intersecting angle, the transition block (308) is positioned between the two connecting grooves (307), and two pin shafts (309) distributed at the intersecting angle on the transition block (308) are used for rotational connection between the transition block (308) and the two connecting grooves (307).
8. An intramedullary nail positioning holder according to claim 1, characterized in that the femoral intramedullary nail (4) is mainly composed of a main nail body (401) for connection with the end of the crank (1), and a proximal hole (402) and a distal hole (403) are respectively provided at both ends of the main nail body (401).
9. An intramedullary nail positioning holder according to claim 1, characterized in that the proximal nail positioning hole (204) on the holding handle (2) is of a bevel hole design, and the coaxial design is adopted between the proximal nail positioning hole (204) and the proximal hole (402) on the femoral intramedullary nail (4) and between the distal nail positioning hole (205) and the distal hole (403) on the femoral intramedullary nail (4).
10. The intramedullary nail positioning holder of claim 1, wherein the locking nail positioning plate (202) and the holding portion (201) are integrally formed, and the back surface of the locking nail positioning plate (202) is integrally formed with a reinforcing rib (203), and the locking nail positioning plate (202) and the front end portion of the crank (1) are parallel in the same direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311177301.7A CN117100379A (en) | 2023-09-12 | 2023-09-12 | Intramedullary nail positioning holder convenient to operate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311177301.7A CN117100379A (en) | 2023-09-12 | 2023-09-12 | Intramedullary nail positioning holder convenient to operate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117100379A true CN117100379A (en) | 2023-11-24 |
Family
ID=88794705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311177301.7A Pending CN117100379A (en) | 2023-09-12 | 2023-09-12 | Intramedullary nail positioning holder convenient to operate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117100379A (en) |
-
2023
- 2023-09-12 CN CN202311177301.7A patent/CN117100379A/en active Pending
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