CN116421292B - Implantation traction mechanism of metal intramedullary pin - Google Patents
Implantation traction mechanism of metal intramedullary pin Download PDFInfo
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- CN116421292B CN116421292B CN202310180830.6A CN202310180830A CN116421292B CN 116421292 B CN116421292 B CN 116421292B CN 202310180830 A CN202310180830 A CN 202310180830A CN 116421292 B CN116421292 B CN 116421292B
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- cylinder
- implantation
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- 238000002513 implantation Methods 0.000 title claims abstract description 28
- 239000002184 metal Substances 0.000 title claims abstract description 19
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 37
- 238000003032 molecular docking Methods 0.000 claims description 14
- 230000001050 lubricating effect Effects 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 239000007943 implant Substances 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 6
- 238000005461 lubrication Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 2
- 210000001503 joint Anatomy 0.000 description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 10
- 235000017491 Bambusa tulda Nutrition 0.000 description 10
- 241001330002 Bambuseae Species 0.000 description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 10
- 239000011425 bamboo Substances 0.000 description 10
- 238000009434 installation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 206010043268 Tension Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000008733 trauma Effects 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, e.g. tourniquets
- 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, setting implements or the like
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/10—Parts, details or accessories
- A61G13/101—Clamping means for connecting accessories to the operating table
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to the technical field of intramedullary nails, in particular to an implantation and extraction mechanism of a metal intramedullary nail, which solves the problems that the scheme in the prior art still has certain defects, and a driving structure and a stabilizing structure are not arranged, so that the stability is insufficient when the operation is performed, the operation difficulty of operators is caused, and the stability and the efficiency of the implantation and extraction process cannot be improved. The utility model provides an implantation tractive mechanism of metal intramedullary needle, includes the shell, sets up the drive assembly of one side in the shell inside, sets up the stable subassembly of the inside opposite side of shell, and the both sides of stable subassembly all are provided with lubrication assembly, and the inside of shell is provided with the carriage. The invention has reasonable structure, greatly improves the smoothness and stability during implantation and pulling out, is convenient for medical staff to operate, can control the pushing speed, ensures the stable movement of the intramedullary pin, and improves the convenience for the operation of the staff.
Description
Technical Field
The invention relates to the technical field of intramedullary nails, in particular to an implantation pulling mechanism of a metal intramedullary nail.
Background
At present, both domestic and overseas intramedullary pin implantation and pulling operations adopt a striking method, a special beating device, a traction device and the like are needed during the operations, the method has a relatively large chance of accidents due to original lag, the intramedullary pin implantation by using the method inevitably causes relatively large vibration to patients, the pain and mental tension of the patients are increased, sometimes the intramedullary pin deformation and the fracture at the intramedullary pin can be caused due to careless operations, the operation time is prolonged, the labor intensity is increased, once the intramedullary pin is deformed, the intramedullary pin extraction difficulty after fracture healing is increased, the pain and the medical cost of the patients are increased, the personal trauma of the operation personnel is sometimes caused, the pain of the medical personnel and the chance of other diseases are increased, and the convenience of the intramedullary pin implantation and traction can be greatly improved through the scheme of the multipurpose intramedullary pin implantation traction device CN2252605Y
However, this solution still has certain drawbacks, and does not provide a driving structure and a stabilizing structure, so that the stability is insufficient during the operation, resulting in difficulty for the operation of the operator, and the stability and efficiency of the implantation and extraction process cannot be improved, so we propose an implantation and extraction mechanism of a metal intramedullary needle, which is convenient for stabilizing the implantation and extraction process, so as to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide an implantation pulling-out mechanism of a metal intramedullary pin, which solves the problems that the scheme in the prior art still has certain defects, and a driving structure and a stabilizing structure are not arranged, so that the stability is insufficient when the operation is performed, the operation difficulty of operators is caused, and the stability and the efficiency of the implantation and pulling-out process cannot be improved.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the implantation pulling mechanism of the metal intramedullary pin comprises a shell, a driving component arranged at one side of the interior of the shell and a stabilizing component arranged at the other side of the interior of the shell, wherein both sides of the stabilizing component are provided with lubricating components, and a sliding frame is arranged in the interior of the shell;
the sliding frame comprises four guide rods which are respectively and horizontally arranged at four corners inside the shell;
the driving assembly comprises a pushing screw rod horizontally arranged at the center of the interior of the shell, one end of the pushing screw rod penetrates through the side wall of one end of the shell through a screw sleeve, and a pushing round rod detachably connected to the other end of the pushing screw rod, one end, far away from the pushing screw rod, of the pushing round rod is connected with a contact lug, and the end part, located at one end of the exterior of the shell, of the pushing screw rod is detachably connected with a holding rod;
the lubricating assembly comprises an installation cylinder which is in sliding connection with four guide rods through a sliding piece, a plurality of balls are installed on the inner wall of the installation cylinder, a cavity is formed in the wall of the installation cylinder, and one end of the installation cylinder is communicated with a liquid injection pipe;
the mounting cylinder on one side is matched with the outer ring of the pushing round rod, and the mounting cylinder on the other side is detachably connected with the four guide rods through the connecting bracket;
the stabilizing assembly comprises a stabilizing cylinder which is connected with the four guide rods in a sliding manner through a moving part, a cavity is formed in the center of the inner portion of the stabilizing cylinder, four clamping structures are arranged in the stabilizing cylinder in the circumferential direction of the cavity, and a through hole is formed in the center of one end of the shell, which is far away from the pushing screw rod.
Preferably, the clamping structure comprises a cylinder arranged at the center of the side wall of the stabilizing cylinder and a clamping block arranged at the center of the inside of the stabilizing cylinder, wherein the output end of the cylinder penetrates through the side wall of the shell through the sliding sleeve to be connected with a pushing rod, and one end of the pushing rod is connected with the clamping block through an elastic structure.
Preferably, the elastic structure comprises a sleeve fixedly connected with the top of the clamping block and provided with a communication opening at the top end and a sliding plate fixedly connected with one end of the pushing rod and in sliding connection with the inside of the sleeve, sliding grooves penetrating through the sleeve are formed in two sides of the sleeve, sliding columns in sliding connection with the sliding grooves in a matched mode are fixedly connected on two sides of the sliding plate, and the bottom of the sliding plate is elastically connected with the bottom of an inner cavity of the sleeve through an extrusion spring.
Preferably, the bottom end fixedly connected with flexible piece of clamp block, the flexible piece is made through soft silica gel material, a plurality of antiskid groove has been seted up to the outer wall of flexible piece.
Preferably, the moving part comprises four sliding sleeves II which are respectively connected with the guide rod in a sliding manner, and each sliding sleeve II is fixedly connected with the side wall of the stabilizing cylinder through a supporting rod.
Preferably, both ends of the guide rod are connected with positioning sheets fixedly connected with the inner wall of the shell through positioning frames.
Preferably, a hexagonal butt joint rod is fixedly connected to the center of one side of the holding rod, one end of the pushing screw rod is fixedly connected with a butt joint column, one end of the butt joint column, which is close to the hexagonal butt joint rod, is provided with a hexagonal butt joint groove which is matched with the hexagonal butt joint rod, and one side, which is far away from the hexagonal butt joint rod, of the holding rod is connected with a club.
Preferably, the mounting groove has been seted up to one side center department of contact lug, and the internally mounted of mounting groove has pressure sensor, the one end fixedly connected with of shell is with the extension spiral shell section of thick bamboo that promotes lead screw looks adaptation and be connected with the holding ring piece through the pipe, a plurality of locating hole has been seted up to one side of holding ring piece, a plurality of mounting hole group has been seted up to the bottom of shell.
The invention has at least the following beneficial effects:
through carriage, drive assembly, lubrication assembly and stabilization subassembly's setting, at first be connected and fixed with the shell through fixed bolster and sick bed, then insert the intramedullary nail to the inside of shell pass the installation section of thick bamboo of one side in proper order, the stability section of thick bamboo, the installation section of thick bamboo of opposite side contacts with the tip of contact lug, thereby medical personnel drive the promotion lead screw through the holding rod and rotate and can drive the promotion round bar and drive the intramedullary nail through the contact lug and remove, thereby the benefit of driving the promotion lead screw according to the holding rod lies in the propulsion resistance that can audio-visual perception intramedullary needle, thereby can control and adjust the dynamics of appling, make the intramedullary needle can at uniform velocity and stable entering to along with inside the hole, stability when guaranteeing to impel avoids appearing great rocking, stability section of thick bamboo and clamping structure can guarantee that the intramedullary needle can carry out centre gripping and stability in the inside position of shell, thereby guarantee the steady removal of all processes, avoid the skew of taking place position, the ball position can evenly send into the lubricating liquid to the outer wall of intramedullary needle, carry out lubrication to the intramedullary needle outer wall, the smoothness when having improved the entering, rational in-place, the advantage of operating personnel has improved the stability, and stability of advancing the operation personnel when advancing, and stability is convenient to have been guaranteed simultaneously.
The invention also has the following beneficial effects:
1. through the setting of clamping structure, can drive the tight piece of clamp through the cylinder and remove and press from both sides tightly the outer wall of intramedullary nail, through sleeve, sliding plate, catch bar, extrusion spring and flexible piece's setting, be convenient for realize applying elastic pressure, guaranteed the fastening nature of centre gripping when protecting the outer wall of intramedullary nail.
2. Through the setting of spacer, be convenient for realize being connected to the inside of shell with the guide arm, through the setting of hexagonal butt joint pole, butt joint post and hexagonal butt joint groove, be convenient for dock the holding rod with the tip of promoting the lead screw fast, through pressure sensor's setting, can show the propulsion resistance with the display device cooperation, it is directly perceived, through the setting of extending the spiral shell section of thick bamboo, improved the rotation stability who promotes lead screw one end, through the setting of mounting hole group, be convenient for realize being connected with the installing support, thereby connect the shell and fix one side at the sick bed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of an extension screw structure of the present invention;
FIG. 3 is a schematic view of a stabilizing assembly according to the present invention;
FIG. 4 is a schematic view of the mounting cylinder structure of the present invention;
FIG. 5 is a schematic view of the push round bar structure of the present invention;
FIG. 6 is a schematic view of a guide bar according to the present invention;
FIG. 7 is a schematic view of the structure of the stabilizing cylinder of the present invention;
FIG. 8 is a schematic view of the structure of the clamping block of the present invention.
In the figure: 1. a drive assembly; 2. a housing; 3. an extension screw; 4. a mounting hole group; 5. positioning ring pieces; 6. a stabilizing assembly; 7. a carriage; 8. a lubrication assembly; 9. a pressure sensor 9; 10. a contact bump; 11. a liquid injection pipe; 13. a mounting cylinder; 14. a ball; 15. a cue; 16. a grip; 17. hexagonal butt joint rod; 18. pushing the screw rod; 19. butt-joint columns; 20. pushing the round rod; 21. a guide rod; 23. a positioning sheet; 25. a stabilizing cylinder; 26. a sliding sleeve II; 27. a cylinder; 28. a sleeve; 29. extruding a spring; 30. a sliding plate; 31. a sliding column; 32. a sliding groove; 33. a clamping block; 34. a flexible block.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
1-8, an implantation pulling mechanism of a metal intramedullary pin comprises a shell 2, a driving component 1 arranged at one side of the interior of the shell 2, and a stabilizing component 6 arranged at the other side of the interior of the shell 2, wherein both sides of the stabilizing component 6 are provided with lubricating components 8, and a sliding frame 7 is arranged in the interior of the shell 2;
the sliding frame 7 comprises four guide rods 21 which are respectively and horizontally arranged at four corners inside the shell 2;
the driving assembly 1 comprises a pushing screw rod 18 horizontally arranged at the inner center of the shell 2 and one end of which penetrates through the side wall of one end of the shell 2 through a screw sleeve, and a pushing round rod 20 detachably connected to the other end of the pushing screw rod 18, one end of the pushing round rod 20, which is far away from the pushing screw rod 18, is connected with a contact lug 10, and the end part of one end of the pushing screw rod 18, which is positioned outside the shell 2, is detachably connected with a holding rod 16;
the lubrication assembly 8 comprises a mounting cylinder 13 which is in sliding connection with four guide rods 21 through a sliding piece, a plurality of balls 14 are mounted on the inner wall of the mounting cylinder 13, a cavity is formed in the cylinder wall of the mounting cylinder 13, and one end of the mounting cylinder 13 is communicated with a liquid injection pipe 11;
the mounting cylinder 13 on one side is matched with the outer ring of the pushing round rod 20, and the mounting cylinder 13 on the other side is detachably connected with the four guide rods 21 through a connecting bracket;
the stabilizing assembly 6 comprises a stabilizing cylinder 25 which is slidably connected with the four guide rods 21 through a moving member and provided with a through cavity at the center inside, four clamping structures are arranged inside the stabilizing cylinder 25 along the circumferential direction of the through cavity, and a through hole is formed in the center of one end of the shell 2 far away from the pushing screw rod 18.
As can be seen from the above embodiments: through the setting of carriage 7, drive assembly 1, lubrication assembly 8 and stable subassembly 6, at first be connected and fixed shell 2 through fixed bolster and sick bed, then insert the intramedullary nail to the inside of shell 2 pass the installation section of thick bamboo 13 of one side in proper order, stabilize section of thick bamboo 25, the installation section of thick bamboo 13 of opposite side and contact bump 10's tip contact, medical personnel drive through holding rod 16 promote lead screw 18 and rotate can drive promotion round bar 20 and remove thereby can drive the intramedullary nail through contact bump 10, thereby drive the intramedullary nail according to holding rod 16 and promote the benefit of lead screw 18 and lie in the promotion resistance that can audio-visual perception intramedullary needle, thereby can control and adjust the dynamics of appling, make the intramedullary needle can at uniform velocity and stable entering along with inside the hole, stability when guaranteeing to promote avoids appearing great rocking, stabilize section of thick bamboo 25 and clamping structure can guarantee that the intramedullary needle can carry out centre gripping and stability in the inside shell 2, thereby guarantee the stable removal of all processes, avoid taking place the skew of position, ball 14 positions can evenly send into the lubricating liquid to the outer wall of intramedullary needle, advance the intramedullary needle when carrying out the stability, the smooth operation has been improved, and the stability of operating personnel has carried out, and stability is convenient when advancing, and easy operation has improved, and stability is easy to carry out.
Referring to fig. 1-8, an implantation pulling mechanism of a metal intramedullary pin includes a clamping structure including a cylinder 27 installed at a center of a side wall of a stabilizing cylinder 25 and a clamping block 33 disposed at a center of an inner portion of the stabilizing cylinder 25, an output end of the cylinder 27 penetrates through a side wall of a housing 2 through a sliding sleeve to be connected with a pushing rod, one end of the pushing rod is connected with the clamping block 33 through an elastic structure, the elastic structure includes a sleeve 28 fixedly connected with a top of the clamping block 33 and provided with a communication opening at a top end portion thereof, and a sliding plate 30 fixedly connected with one end of the pushing rod and slidingly connected with the interior of the sleeve 28, sliding columns 31 penetrating through the sleeve 28 are formed on two sides of the sleeve 28, sliding columns 31 slidingly connected with the sliding grooves 32 are fixedly connected on two sides of the sliding plate 30, a bottom of the sliding plate 30 is elastically connected with a bottom of an inner cavity of the sleeve 28 through a compression spring 29, the bottom end of the clamping block 33 is fixedly connected with a flexible block 34, the outer wall of the flexible block 34 is formed through soft silica gel material, the moving member includes a plurality of anti-skid grooves, four sliding sleeves 26 respectively slidingly connected with the two sliding sleeves 21, and two sliding sleeves 26 are slidingly connected with the side walls 25 respectively.
As can be seen from the above embodiments: through the arrangement of the sliding frame 7, the driving component 1, the lubricating component 8 and the stabilizing component 6, firstly, the shell 2 is connected and fixed with a sickbed through a fixed bracket, then the intramedullary pin is inserted into the shell 2, sequentially passes through the mounting cylinder 13 on one side, the stabilizing cylinder 25 and the mounting cylinder 13 on the other side to be contacted with the end part of the contact lug 10, then the medical staff drives the pushing screw rod 18 to rotate through the holding rod 16 to drive the pushing round rod 20 to move so as to drive the intramedullary pin to move through the contact lug 10, the pushing screw rod 18 is driven according to the holding rod 16, the pushing resistance of the intramedullary pin can be intuitively perceived, the applied force can be controlled and regulated, the intramedullary pin can enter the inside of the hole at uniform speed and stably, the stability during pushing is ensured to avoid larger shaking, the stable cylinder 25 and the clamping structure can ensure that the position of the intramedullary pin in the shell 2 can be clamped and stabilized, thereby ensuring the stable movement of the whole process, avoiding the deviation of the position, the position of the ball 14 can evenly send lubricating liquid to the outer wall of the intramedullary pin, lubricating the outer wall of the intramedullary pin, improving the smoothness during the entering, the structure is reasonable, greatly improving the smoothness and stability during the implantation and pulling, being convenient for medical staff to operate, controlling the pushing speed, improving the convenience of staff to operate while ensuring the stable movement of the intramedullary pin, driving the clamping block 33 to clamp the outer wall of the intramedullary pin through the arrangement of the clamping structure and facilitating the application of elastic pressure through the arrangement of the sleeve 28, the sliding plate, the pushing rod, the extrusion spring 29 and the flexible block 34, the outer wall of the intramedullary pin is protected and the clamping tightness is ensured.
Referring to fig. 1-8, an implantation pulling mechanism of a metal intramedullary pin includes a guide rod 21, two ends of which are connected with a positioning plate 23 fixedly connected with an inner wall of a housing 2 through a positioning frame, a hexagonal docking rod 17 is fixedly connected with a center of one side of a holding rod 16, one end of a pushing screw rod 18 is fixedly connected with a docking post 19, one end of the docking post 19, which is close to the hexagonal docking rod 17, is provided with a hexagonal docking groove adapted to the hexagonal docking rod 17, one side of the holding rod 16, which is far away from the hexagonal docking rod 17, is connected with a club 15, one side center of a contact bump 10 is provided with a mounting groove, a pressure sensor 9 is mounted in the mounting groove, one end of the housing 2 is fixedly connected with an extension screw cylinder 3 adapted to the pushing screw rod 18, the other end of the housing is connected with a positioning ring plate 5 through a circular tube, one side of the positioning ring plate 5 is provided with a plurality of positioning holes, and the bottom of the housing 2 is provided with a plurality of mounting hole groups 4.
As can be seen from the above embodiments: through the arrangement of the sliding frame 7, the driving component 1, the lubricating component 8 and the stabilizing component 6, firstly, the shell 2 is connected and fixed with a sickbed through a fixed bracket, then the intramedullary pin is inserted into the shell 2, sequentially passes through the mounting cylinder 13 on one side, the stabilizing cylinder 25 and the mounting cylinder 13 on the other side to be contacted with the end part of the contact lug 10, then the medical staff drives the pushing screw rod 18 to rotate through the holding rod 16 to drive the pushing round rod 20 to move so as to drive the intramedullary pin to move through the contact lug 10, the pushing screw rod 18 is driven according to the holding rod 16, the pushing resistance of the intramedullary pin can be intuitively perceived, the applied force can be controlled and regulated, the intramedullary pin can enter the inside of the hole at uniform speed and stably, the stability during pushing is ensured to avoid larger shaking, the stable cylinder 25 and the clamping structure can ensure that the position of the intramedullary pin in the shell 2 can be clamped and stabilized, thereby ensuring the stable movement of the whole process, avoiding the deviation of the position, the position of the ball 14 can evenly send lubricating liquid to the outer wall of the intramedullary pin, lubricating the outer wall of the intramedullary pin, improving the smoothness during the entering, the structure is reasonable, greatly improving the smoothness and stability during the implantation and pulling, being convenient for medical staff to operate, controlling the pushing speed, improving the convenience of staff to operate while ensuring the stable movement of the intramedullary pin, driving the clamping block 33 to clamp the outer wall of the intramedullary pin through the arrangement of the clamping structure and facilitating the application of elastic pressure through the arrangement of the sleeve 28, the sliding plate, the pushing rod, the extrusion spring 29 and the flexible block 34, the outer wall of the intramedullary pin is protected, the clamping tightness is guaranteed, the guide rod 21 is conveniently connected to the inside of the shell 2 through the setting of the locating plate 23, the holding rod 16 is conveniently and rapidly abutted to the end part of the pushing screw rod 18 through the setting of the hexagonal abutting rod 17, the abutting column 19 and the hexagonal abutting groove, the pushing resistance can be displayed in cooperation with a display device through the setting of the pressure sensor 9, the rotating stability of one end of the pushing screw rod 18 is improved through the setting of the extending screw cylinder 3, and the connection with a mounting bracket is conveniently realized through the setting of the mounting hole group 4, so that the shell 2 is connected and fixed on one side of a sickbed.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An implant retraction mechanism for a metal intramedullary pin, comprising:
the device comprises a shell (2), a driving assembly (1) arranged on one side of the interior of the shell (2) and a stabilizing assembly (6) arranged on the other side of the interior of the shell (2), wherein lubricating assemblies (8) are arranged on two sides of the stabilizing assembly (6), and a sliding frame (7) is arranged in the interior of the shell (2);
the sliding frame (7) comprises four guide rods (21) which are respectively and horizontally arranged at four corners inside the shell (2);
the driving assembly (1) comprises a pushing screw rod (18) horizontally arranged at the inner center of the shell (2) and one end of the pushing screw rod penetrates through the side wall of one end of the shell (2) through a screw sleeve, and a pushing round rod (20) detachably connected to the other end of the pushing screw rod (18), one end, far away from the pushing screw rod (18), of the pushing round rod (20) is connected with a contact lug (10), and the end, located at one end outside the shell (2), of the pushing screw rod (18) is detachably connected with a holding rod (16);
the lubricating assembly (8) comprises a mounting cylinder (13) which is connected with four guide rods (21) in a sliding manner through sliding pieces, a plurality of balls (14) are mounted on the inner wall of the mounting cylinder (13), a cavity is formed in the cylinder wall of the mounting cylinder (13), and one end of the mounting cylinder (13) is communicated with a liquid injection pipe (11);
the mounting cylinder (13) on one side is matched with the outer ring of the pushing round rod (20), and the mounting cylinder (13) on the other side is detachably connected with the four guide rods (21) through connecting brackets;
the stabilizing assembly (6) comprises a stabilizing cylinder (25) which is connected with the four guide rods (21) in a sliding manner through a moving part, a cavity is formed in the center of the inner part of the stabilizing cylinder (25), four clamping structures are arranged in the stabilizing cylinder in the circumferential direction of the cavity, and a through hole is formed in the center of one end of the shell (2) far away from the pushing screw rod (18).
2. The implantation pulling mechanism of a metal intramedullary pin according to claim 1, wherein the clamping structure comprises a cylinder (27) installed at the center of the side wall of the stabilizing cylinder (25) and a clamping block (33) arranged at the center of the inside of the stabilizing cylinder (25), the output end of the cylinder (27) penetrates through the side wall of the shell (2) through a sliding sleeve to be connected with a pushing rod, and one end of the pushing rod is connected with the clamping block (33) through an elastic structure.
3. The implantation pulling mechanism of a metal intramedullary pin according to claim 2, wherein the elastic structure comprises a sleeve (28) fixedly connected with the top of the clamping block (33) and provided with a communication opening at the top end and a sliding plate (30) fixedly connected with one end of the push rod and in sliding connection with the interior of the sleeve (28), sliding grooves (32) penetrating through the sleeve (28) are formed in two sides of the sleeve (28), sliding columns (31) in sliding connection with the sliding grooves (32) are fixedly connected to two sides of the sliding plate (30), and the bottom of the sliding plate (30) is elastically connected with the bottom of an inner cavity of the sleeve (28) through a compression spring (29).
4. The implanting and pulling mechanism of the metal intramedullary pin according to claim 3, wherein the bottom end of the clamping block (33) is fixedly connected with a flexible block (34), the flexible block (34) is made of soft silica gel material, and a plurality of anti-slip grooves are formed on the outer wall of the flexible block (34).
5. The implantation pulling out mechanism of a metal intramedullary pin according to claim 4, wherein the moving member comprises four sliding sleeves (26) which are respectively connected with the guide rod (21) in a sliding way, and each sliding sleeve (26) is fixedly connected with the side wall of the stabilizing cylinder (25) through a supporting rod.
6. The implantation pulling out mechanism of a metal intramedullary pin according to claim 1, wherein both ends of the guide rod (21) are connected with a locating piece (23) fixedly connected with the inner wall of the shell (2) through a locating frame.
7. The implantation pulling mechanism of a metal intramedullary pin according to claim 1, wherein a hexagonal docking rod (17) is fixedly connected to a center of one side of the holding rod (16), one end of the pushing screw rod (18) is fixedly connected with a docking post (19), one end of the docking post (19) close to the hexagonal docking rod (17) is provided with a hexagonal docking groove matched with the hexagonal docking rod (17), and one side of the holding rod (16) far away from the hexagonal docking rod (17) is connected with a ball rod (15).
8. The implantation pulling mechanism of a metal intramedullary pin according to claim 7, wherein a mounting groove is formed in the center of one side of the contact protruding block (10), a pressure sensor (9) is mounted in the mounting groove, one end of the housing (2) is fixedly connected with an extension screw cylinder (3) which is connected with a pushing screw rod (18) in an adapting manner, the other end of the housing is connected with a positioning ring piece (5) through a circular tube, a plurality of positioning holes are formed in one side of the positioning ring piece (5), and a plurality of mounting hole groups (4) are formed in the bottom of the housing (2).
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| CN202310180830.6A CN116421292B (en) | 2023-03-01 | 2023-03-01 | Implantation traction mechanism of metal intramedullary pin |
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