CN112617715A

CN112617715A - Intramedullary nail and anti-micromotion positioning assembly thereof

Info

Publication number: CN112617715A
Application number: CN202011631681.3A
Authority: CN
Inventors: 杨承刚; 齐艳芳
Original assignee: Gu'an Bojian Biotechnology Co ltd
Current assignee: Gu'an Bojian Biotechnology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-04-09
Anticipated expiration: 2040-12-31
Also published as: CN112617715B

Abstract

The invention discloses an intramedullary nail and an anti-micromotion positioning component thereof, which comprise an intramedullary nail rod and a sighting device and are characterized in that the inside of the intramedullary nail rod is a cavity, the inside of the intramedullary nail rod comprises a fixing component for keeping the stability of the intramedullary nail, and the fixing component is combined and connected with the intramedullary nail rod; the side wall of the intramedullary nail rod comprises a through hole for allowing the fixing component to extend out; two ends of the intramedullary nail rod comprise locking holes, and the locking holes are matched with the locking screws; the sighting device is connected with the intramedullary nail rod in a combined manner. The intramedullary nail and the micromotion-preventing positioning component thereof can be used for checking wounds of fracture broken ends through the image acquisition structure, and the fixing component can maintain the stability of the intramedullary nail.

Description

Intramedullary nail and anti-micromotion positioning assembly thereof

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an intramedullary nail and an anti-micromotion positioning assembly thereof.

Background

Intramedullary nails are ideal endophytes for treating diaphysis fracture and are the first choice of treatment for the long tubular bones of limbs at present. Through minimally invasive techniques, the intramedullary nail can provide good stability while reducing soft tissue injury in the fracture region. Avoiding further damage to the soft tissue surrounding the fracture area may promote vascularization, aiding in the formation of bridging. The bone-intramedullary nail femur allows for early loading and promotes healing.

As an internal fixator commonly used in orthopedic surgery, the application of intramedullary nails to the treatment of limb fractures has been a long history, and animal experiments and clinical observations have been carried out on human beings with different rod-shaped materials more than 100 years ago. China is used from the last 90 th century, then is applied to clinic and widely popularized, and is used up to now through one-time improvement.

The intramedullary nail is a common orthopedic internal fixation instrument composed of a hollow intramedullary nail rod, a proximal locking screw hole and other components, the fracture part is fixed by adopting a closed and minimally invasive technology, and the operation wound is small; in addition, the intramedullary nail can not damage the bone marrow of a patient, because the bone marrow in a long tubular bone is red bone marrow with hematopoietic function in the period of children, the bone marrow in the long tubular bone is changed into yellow bone marrow without hematopoietic function after adults, and the yellow bone marrow can be regenerated after being damaged, the intramedullary nail can be used for treating bone fracture, and the patient does not worry about the damage to the bone marrow, so the intramedullary nail is welcomed by orthopedic doctors and the patient and is often used for treating various types of bone fractures.

Although the existing intramedullary nail has many advantages, there are some unsatisfactory disadvantages: (1) the thickness of the bone cavity of different patients is different, the intramedullary nail is easy to be unstable and generates micromotion, and the bone is not connected; (2) at present, two-point control is clinically adopted to fix the broken end of the fracture, which is easy to be unstable.

The invention aims at the problems and provides an intramedullary nail and an anti-micromotion positioning assembly thereof.

Disclosure of Invention

In order to overcome the problems noted in the background, the present invention provides an intramedullary nail and an anti-micromotion positioning assembly thereof.

An intramedullary nail and an anti-micromotion positioning component thereof comprise an intramedullary nail rod and a sighting device, and are characterized in that the inside of the intramedullary nail rod is a cavity, the inside of the intramedullary nail rod comprises a fixing component for keeping the stability of the intramedullary nail, and the fixing component is combined and connected with the intramedullary nail rod; the side wall of the intramedullary nail rod comprises a through hole for allowing the fixing component to extend out; two ends of the intramedullary nail rod comprise locking holes, and the locking holes are matched with the locking screws; the sighting device is connected with the intramedullary nail rod in a combined manner. The intramedullary nail and the micromotion-preventing positioning component thereof can be used for checking wounds of fracture broken ends through the image acquisition structure, and the fixing component can maintain the stability of the intramedullary nail.

Furthermore, the main body of the intramedullary nail rod is a cylinder, and the inner part of the intramedullary nail rod is a cylindrical cavity. The intramedullary nail arranged in the shape has no edges and corners on the outer surface, and is in accordance with clinical use.

Furthermore, the sighting device is located the rear end of intramedullary nail pole, and the rear end of intramedullary nail pole includes the external screw thread, and the sighting device includes the internal thread that corresponds, and intramedullary nail pole passes through threaded combination with the sighting device and is connected. When in use, the sighting device is combined and connected with the intramedullary nail through the screw thread.

Furthermore, the sighting device comprises a through hole communicated with the intramedullary nail rod, the through hole and the intramedullary nail rod are on the same horizontal line, and the inner diameter of the through hole is equal to that of the intramedullary nail rod. The arrangement facilitates the internal operation of the intramedullary nail rod through the through hole.

Further, the sighting device is

And (4) shaping. The sighting device is convenient for the operating doctor to hold.

Further, the fixed assembly comprises a fixed screw and a linkage rod, the linkage rod comprises a first linkage rod and a second linkage rod, the first linkage rod is hinged with the front end of the fixed screw, the second linkage rod is movably connected with the fixed screw, and the free end of the first linkage rod is hinged with the free end of the second linkage rod; the free ends of the first link rod and the second link rod extend out of the through hole. In the arrangement, the second link rod can move on the fixing screw rod so as to adjust the included angle between the first link rod and the second link rod, and the free ends of the first link rod and the second link rod extend out of the intramedullary nail rod from the through hole and are in contact with the wall of the bone cavity, so that the stability of the intramedullary nail is enhanced.

Furthermore, arc-shaped plates with smooth edges are arranged at the free ends of the first link rod and the second link rod. The arc-shaped plate is contacted with the wall of the bone cavity, so that the tissue in the bone cavity can be prevented from being damaged.

Furthermore, the main bodies of the fixed screw rod and the linkage rod are cylinders.

Further, the fixing screw comprises an external thread section and a non-thread section, and the length of the external thread section is larger than that of the non-thread section.

Furthermore, a sleeve ring sleeved on the periphery of the fixed screw rod is arranged, the inner diameter of the sleeve ring is larger than the diameter of the fixed screw rod, and the second link rod is hinged with the sleeve ring through a screw. In the arrangement, the link rod II can be extended through the sliding lantern ring, so that the included angle between the link rod I and the link rod II is changed.

Furthermore, a pushing structure for pushing the lantern ring to move is arranged, the pushing structure comprises a threaded sleeve and a rotating handle, the threaded sleeve is sleeved on the fixed screw, and the threaded sleeve is in threaded connection with the external thread section of the fixed screw; the threaded sleeve is rotationally connected with the lantern ring; the rotating handle is detachably connected with the threaded sleeve and extends out of the sighting device. When the connecting rod II is used, the threaded sleeve is rotated by rotating the handle, and the threaded sleeve realizes displacement on the fixed screw rod through rotation, so that the lantern ring is pushed to move, and the movement of the connecting rod II is realized; after the operation is completed, the rotating handle is detached from the threaded sleeve and is withdrawn from the patient.

Further, a rotating shaft is arranged on the lantern ring, a matched rotating groove is formed in the threaded sleeve, and the lantern ring is rotatably connected with the threaded sleeve through the rotating shaft.

Further, the threaded sleeve comprises a cross-shaped groove, the rotating handle comprises a cross-shaped connector, the cross-shaped connector is spliced with the cross-shaped groove, and the rotating handle is spliced with the threaded sleeve through the cross-shaped groove. When the connecting rod II is used, the cross-shaped connector of the rotating handle is inserted into the cross-shaped groove of the threaded sleeve, then the rotating handle is rotated by hands, so that the threaded sleeve rotates, the threaded sleeve rotates on the fixed screw rod and can be displaced, and the lantern ring is pushed to move, so that the position of the connecting rod II is changed.

Furthermore, a row column for stabilizing the position of the fixed assembly is arranged at the bottom of the fixed screw rod and consists of at least two cylinders, and the row column is integrally connected with the fixed screw rod; the side wall of the intramedullary nail rod is provided with a round hole allowing the row column to extend out, and the row column extends out of the intramedullary nail rod through the round hole. In the arrangement, the row columns extend out of the intramedullary nail rod to be contacted with the bone cavity wall, so that the function of strengthening the stability of the intramedullary nail is achieved.

Furthermore, the bottom of the row of columns, namely one end contacted with the bone cavity wall, is a semi-sphere. The bottom of the volleyball is smooth, so that the internal tissues of the bone cavity are prevented from being damaged.

Furthermore, the whole fixing component is made of titanium alloy or stainless steel materials. The fixed component arranged in the way has high strength and corrosion resistance, and meets the clinical use standard.

Further, at least two fixation assemblies are disposed inside the intramedullary nail shaft. This arrangement enhances stabilization of the intramedullary nail.

Further, an image acquisition structure for acquiring a wound of a patient is provided.

Further, the image acquisition structure comprises a soft endoscope and a control structure for controlling the direction of the endoscope, and the endoscope and the control structure enter the inside of the intramedullary nail rod from the through hole of the sighting device; a window is provided in the intramedullary nail shaft to allow an endoscope to protrude. The wound condition of the fracture broken end can be checked through the endoscope, and the direction of the endoscope can be controlled through the control structure, so that the wound condition can be checked in an all-round mode.

Further, the endoscope is a fiber soft lens and comprises a lens, an optical fiber and a control knob.

Furthermore, the control structure comprises a fixer and an operating rod, the fixer comprises a guide pipe and a fixed handrail, the fixed handrail is arranged at the rear end of the guide pipe and integrally connected with the guide pipe, the fixed handrail is positioned outside the through hole, and the fixed handrail is connected with the sighting device in a combined manner; the operating rod is arranged at the front end of the guide pipe and is used for controlling the direction of the front end of the guide pipe. In the arrangement, the direction of the front end of the guide tube is controlled through the operating rod, so that the function of adjusting the direction of the endoscope is realized, the fixed handrail is connected with the sighting device in a combined manner, the whole position of the fixer is fixed, and the stability of the endoscope in the operating process is ensured.

Furthermore, the guide pipe is a cylindrical pipe, the rear end of the guide pipe is integrally connected with the fixed handrail, the front end of the guide pipe is a front opening, and the front opening is positioned in the area where the window is located; the rear end of the guide pipe is a rear opening which is positioned on the outer side wall of the fixed handrail; the optical fibers of the endoscope enter through the rear opening and exit through the front opening. When the endoscope is used, the lens end of the endoscope enters the guide tube from the rear opening and then extends out from the front opening of the guide tube, so that the lens of the endoscope extends out from the window of the intramedullary nail rod, and the wound condition of the fractured end of the fracture is obtained.

Furthermore, fixed handrail is horizontal "U" shape pole, and the bottom of fixed handrail includes the opening clamp, and opening clamp and fixed handrail body coupling, fixed handrail pass through the opening clamp and aim at the ware composite connection. The arrangement connects the fixed armrest and the sighting device in a combined manner through the split clamp.

Furthermore, an anti-slip gasket is arranged on the inner wall of the opening clamp and fixedly connected with the opening clamp. The arrangement can increase the friction force between the split clamp and the sighting device and enhance the stability of the fixer.

Furthermore, the front end of stand pipe includes activity pipe and swing joint structure, and the activity pipe passes through swing joint structure and stand pipe swing joint. The arrangement realizes the direction adjustment of the endoscope through the movable tube.

Furthermore, the movable connection structure is a soft elastic connection pipe, one end of the soft elastic connection pipe is integrally connected with the guide end, and the other end of the soft elastic connection pipe is integrally connected with the movable pipe.

Further, the front end of the operating rod comprises a connecting ring A, the outer side wall of the movable tube comprises a connecting ring B, the connecting ring A is sleeved with the connecting ring B, the connecting ring A is integrally connected with the operating rod, and the connecting ring B is integrally connected with the movable tube; the operating rod extends out of the through hole. When in use, the operating doctor controls the direction of the movable tube by pulling the operating rod.

Furthermore, the rear end of the operating rod comprises a pulling handle which is convenient for an operator to operate, and the pulling handle is integrally connected with the operating rod.

Further, the pulling handle is a semicircular rod. When in use, the surgeon hooks the semicircular rod with fingers to draw.

Furthermore, a flushing structure for flushing the wound and diminishing inflammation is arranged, and the flushing structure is connected with the intramedullary nail rod in a combined manner.

Further, the flushing structure comprises a flushing pipe and a liquid storage bag, the flushing pipe is integrally connected with the liquid storage bag, and the flushing pipe is communicated with the liquid storage bag; the liquid storage bag comprises a liquid inlet, the liquid inlet comprises a threaded cover which is connected in a combined manner, and the liquid storage bag comprises a soft bag body. When the anti-inflammation liquid injection device is used, anti-inflammation liquid is injected into the liquid storage bag through the liquid inlet, then the flushing pipe is placed into the guide pipe from the rear opening of the guide pipe, the front end of the flushing pipe extends out of the front opening of the guide pipe, the liquid storage bag is squeezed, the anti-inflammation liquid can be sprayed out, and therefore a wound is flushed and anti-inflammation is achieved.

Further, a spraying head is arranged at the front end of the flushing pipe and comprises spraying holes, and the spraying head and the flushing pipe are integrally connected. This arrangement allows for a more uniform liquid spray.

Furthermore, the flushing pipe is made of soft silica gel materials or soft plastics. The flushing pipe is soft in texture, and the flushing direction of the front end of the flushing pipe can be controlled by operating the operating rod.

Furthermore, the soft bag body of the liquid storage bag is made of soft silica gel materials.

Further, a bone grafting structure for implanting bone particles is arranged and is combined and connected with the intramedullary nail rod.

Further, the bone grafting structure comprises a bone grafting tube and a bone grafting push rod, and the bone grafting push rod is positioned in the bone grafting tube. When in use, the bone particles are loaded into the bone grafting tube, and the bone grafting push rod is pushed to implant the bone particles into the affected part.

Further, the bone grafting tube is a soft cylindrical tube. When the bone grafting instrument is used, the bone grafting tube is arranged in the guide tube, and the direction of the front end of the bone grafting tube can be controlled through the operating rod.

Furthermore, the front end of the bone grafting tube is arranged to be pencil-shaped. This arrangement can enhance the accuracy of implanting bone particles into the affected area.

Furthermore, the rear end of the bone grafting tube extends out of the guide tube, and the rear end of the bone grafting tube comprises a horn-shaped opening. The trumpet-shaped opening is arranged to facilitate the granular bone implantation into the bone implantation tube.

Further, the bone grafting push rod is a soft cylindrical rod. The bone grafting push rod arranged in the way can adapt to the trend of the bone grafting tube.

Furthermore, the rear end of the bone grafting push rod extends out of the bone grafting tube, the rear end of the bone grafting push rod comprises a T-shaped handle, and the T-shaped handle and the bone grafting push rod are integrally connected. When in use, the T-shaped handle is held by hand to push and pull the bone grafting push rod.

The invention has the beneficial effects that: (1) the bone grafting can be carried out on the bone defect part, the operation is simple, and the treatment effect is good; (2) the internal condition of the fracture wound can be checked, so that an operator can know the fracture condition more, and an optimal treatment scheme is adopted; (3) the flushing and inflammation diminishing effects can be achieved on the fracture wound, the inflammatory reaction is relieved, and the infection is avoided; (4) can prevent the intramedullary nail from micromotion and avoid the condition of bone nonunion at the fracture end.

Drawings

FIG. 1 is a schematic view of the overall structure of an intramedullary nail shaft internally provided with a fixation assembly according to the present invention;

FIG. 2 is a schematic top view of the intramedullary nail shaft with a fixation assembly disposed therein;

FIG. 3 is a schematic view of the overall front view of the intramedullary nail shaft with the fixation assembly disposed therein according to the present invention;

FIG. 4 is a schematic view of the overall structure of the fixing assembly of the present invention;

FIG. 5 is an enlarged view of the through hole of the fixing member of the present invention;

FIG. 6 is an enlarged schematic view of the securing assembly of the present invention;

FIG. 7 is a front view of the fixing assembly of the present invention;

FIG. 8 is an enlarged schematic view of the connection between the collar and the threaded sleeve of the present invention;

FIG. 9 is an enlarged schematic view of the threaded sleeve of the present invention;

FIG. 10 is an enlarged partial schematic view of the twist grip of the present invention;

FIG. 11 is an enlarged cross-sectional view of the threaded sleeve of the present invention;

FIG. 12 is an enlarged view of the hinge between the first link and the second link at the free end of the first link;

FIG. 13 is an enlarged view of the hinge of the first link and the front end of the fixing screw according to the present invention;

FIG. 14 is an enlarged view of the joint between the second link and the collar of the present invention;

FIG. 15 is a partial top elevational view of the present invention with two sets of fastening assemblies;

FIG. 16 is a schematic view of the overall construction of the present invention with a guide tube and endoscope;

FIG. 17 is a schematic view showing the structure of the guide tube and the endoscope in use;

FIG. 18 is an enlarged front end view of the endoscope and guide tube of the present invention;

FIG. 19 is a schematic view of the position of the guide tube, endoscope and window in accordance with the present invention;

FIG. 20 is a schematic view of the assembled connection of the fixed arm rest and the aiming device according to the present invention;

FIG. 21 is a schematic view of the fixed arm of the present invention in use with an endoscope;

FIG. 22 is a schematic view of the overall structure of the control structure of the present invention;

FIG. 23 is an enlarged view of the fixed armrest of the present invention;

FIG. 24 is a schematic view of the overall structure of the flushing structure of the present invention;

FIG. 25 is a schematic view of the positional relationship of the irrigation tube, guide tube and window of the present invention;

FIG. 26 is a schematic view of the fixed armrest, sight and reservoir of the present invention in positional relationship;

FIG. 27 is an enlarged view of the fixed armrest and the flushing structure of the present invention;

FIG. 28 is a schematic view of the overall structure of the flushing structure in the use state of the present invention;

FIG. 29 is a front view of the overall structure of the flushing structure in use according to the present invention;

FIG. 30 is a schematic view of the overall structure of the bone grafting structure according to the present invention;

FIG. 31 is a schematic view showing the positional relationship of the bone grafting tube, the guiding tube and the window according to the present invention;

FIG. 32 is a schematic view of the fixed arm rest, bone graft and aiming device of the present invention;

FIG. 33 is a schematic view of the bone grafting structure and the guiding tube in use;

FIG. 34 is a partially enlarged view of the bone grafting structure and the guiding tube in use;

FIG. 35 is an enlarged view of the front end of the bone grafting tube and the guiding tube according to the present invention;

FIG. 36 is a structural view illustrating a use state of the bone grafting structure according to the present invention;

in the drawings, 1, an intramedullary nail rod; 11. a through hole; 12. a window; 13. a locking hole; 2. a sight; 21. a through hole; 3. fixing the screw rod; 31. a first connecting rod; 32. a second link rod; 33. a collar; 331. a rotating shaft; 34. a threaded sleeve; 341. a cross-shaped groove; 35. rotating the handle; 351. a cross-shaped connector; 36. arranging columns; 37. an arc-shaped plate; 4. a guide tube; 41. a movable tube; 42. a soft elastic connecting pipe; 43. an operating lever; 431. pulling the handle; 44. fixing the handrail; 441. a split clamp; 45. an endoscope; 5. a flush tube; 51. a reservoir; 511. a threaded cap; 52. a sprinkler head; 6. a bone grafting tube; 61. a bone grafting push rod; 62. a horn-shaped opening; 63. t-shaped handle.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below by specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and embodiments can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

The front end of the intramedullary nail rod is the end which enters the bone of the patient firstly, and the rear end is the end which enters the bone finally.

Example 1

An intramedullary nail and an anti-micromotion positioning component thereof comprise an intramedullary nail rod 1 and a sighting device 2, and are characterized in that the inside of the intramedullary nail rod 1 is a cavity, the inside of the intramedullary nail rod 1 comprises a fixing component for keeping the stability of the intramedullary nail, and the fixing component is combined and connected with the intramedullary nail rod 1; the side wall of the intramedullary nail shank 1 comprises a through hole 11 allowing the protrusion of the fixation assembly; the two ends of the intramedullary nail rod 1 comprise locking holes 13, and the locking holes 13 are matched with locking screws; the sighting device 2 is connected with the intramedullary nail rod 1 in a combined manner. The intramedullary nail and the micromotion-preventing positioning component thereof can be used for checking wounds of fracture broken ends through the image acquisition structure, and the fixing component can maintain the stability of the intramedullary nail.

The main body of the intramedullary nail rod 1 is a cylinder, and the inner part of the intramedullary nail rod 1 is a cylindrical cavity. The intramedullary nail arranged in the shape has no edges and corners on the outer surface, and is in accordance with clinical use.

The sighting device 2 is located at the rear end of the intramedullary nail rod 1, the rear end of the intramedullary nail rod 1 comprises an external thread, the sighting device 2 comprises a corresponding internal thread, and the intramedullary nail rod 1 is connected with the sighting device 2 through a thread combination. When in use, the sighting device 2 is combined and connected with the intramedullary nail through the screw thread.

The aiming device 2 comprises a through hole 21 communicated with the intramedullary nail rod 1, the through hole 21 is on the same horizontal line with the intramedullary nail rod 1, and the inner diameter of the through hole 21 is equal to that of the intramedullary nail rod 1. This arrangement facilitates the internal manipulation of the intramedullary nail shank 1 through the through-going hole 21.

The sighting device 2 is

And (4) shaping. The sighting device 2 is convenient for the operator to hold.

The fixed assembly comprises a fixed screw rod 3 and a linkage rod, the linkage rod comprises a first linkage rod 31 and a second linkage rod 32, the first linkage rod 31 is hinged with the front end of the fixed screw rod 3, the second linkage rod 32 is movably connected with the fixed screw rod 3, and the free end of the first linkage rod 31 is hinged with the free end of the second linkage rod 32; the free ends of the first link 31 and the second link 32 extend out of the through hole 11. In this arrangement, the link rod two 32 can move on the fixing screw rod 3, so as to adjust the included angle between the link rod one 31 and the link rod two 32, and the free ends of the link rod one 31 and the link rod two 32 extend out of the through hole 11 to the outside of the intramedullary nail rod 1 to be contacted with the bone cavity wall, thereby enhancing the stability of the intramedullary nail.

An arc-shaped plate 37 with smooth edges is arranged at the free ends of the first link 31 and the second link 32. This kind of setting can avoid haring the tissue in the bone cavity through arc 37 contact bone cavity wall.

The main bodies of the fixed screw rod 3 and the linkage rod are both cylinders.

The fixing screw 3 includes an external thread section and a non-thread section, and the length of the external thread section is greater than that of the non-thread section.

And a lantern ring 33 sleeved on the periphery of the fixed screw rod 3 is arranged, the inner diameter of the lantern ring 33 is larger than the diameter of the fixed screw rod 3, and the second link rod 32 is hinged with the lantern ring 33 through a screw. In this arrangement, the sliding collar 33 can extend the link pair 32, thereby changing the angle between the link pair 32 and the link pair 31.

A pushing structure for pushing the lantern ring 33 to move is arranged, the pushing structure comprises a threaded sleeve 34 and a rotating handle 35, the threaded sleeve 34 is sleeved on the fixed screw rod 3, and the threaded sleeve 34 is in threaded connection with the external thread section of the fixed screw rod 3; the threaded sleeve 34 is rotatably connected with the collar 33; a turning handle 35 is detachably connected to the threaded sleeve 34, and the turning handle 35 protrudes outside the sight 2. When the device is used, the threaded sleeve 34 is rotated by rotating the handle 35, and the threaded sleeve 34 is rotated to realize displacement on the fixed screw rod 3, so that the lantern ring 33 is pushed to move, and the movement of the link rod two 32 is realized; after the operation is completed, the rotating handle 35 is detached from the threaded sleeve 34 and withdrawn from the patient.

A rotating shaft 331 is arranged on the collar 33, a matching rotating groove is arranged on the threaded sleeve 34, and the collar 33 and the threaded sleeve 34 are rotatably connected through the rotating shaft 331.

The threaded sleeve 34 comprises a cross-shaped groove 341, the rotating handle 35 comprises a cross-shaped connector 351, the cross-shaped connector 351 is inserted into the cross-shaped groove 341, and the rotating handle 35 is inserted into the threaded sleeve 34 through the cross-shaped groove 341. When the connecting rod 32 is used, the cross-shaped connector 351 of the rotating handle 35 is inserted into the cross-shaped groove 341 of the threaded sleeve 34, then the rotating handle 35 is rotated by hand, so that the threaded sleeve 34 rotates, the threaded sleeve 34 rotates on the fixed screw rod 3 and is displaced, and the lantern ring 33 is pushed to move, so that the position of the connecting rod 32 is changed.

A row column 36 for stabilizing the position of the fixed component is arranged at the bottom of the fixed screw rod 3, the row column 36 is composed of at least two cylinders, and the row column 36 is integrally connected with the fixed screw rod 3; round holes are provided in the side walls of the intramedullary nail rod 1 to allow the posts 36 to extend through, and the posts 36 extend outside the intramedullary nail rod 1 through the round holes. In this arrangement, the rowbars 36 extend beyond the intramedullary nail shank 1 to contact the bone cavity wall and serve to enhance the stability of the intramedullary nail.

The bottom of the row of posts 36, i.e., the end in contact with the wall of the bone cavity, is a semi-sphere. The bottom of the row of columns 36 is smooth, and the tissues in the bone cavity are prevented from being damaged.

The whole fixing component is made of titanium alloy or stainless steel material. The fixed component arranged in the way has high strength and corrosion resistance, and meets the clinical use standard.

At least two fixation assemblies are arranged inside the intramedullary nail shank 1. This arrangement enhances stabilization of the intramedullary nail.

The using method of the embodiment comprises the following steps: inserting a cross-shaped connector 351 of a rotating handle 35 into a cross-shaped groove 341 of a threaded sleeve 34, placing the front end of a fixing screw rod 3 into the intramedullary nail rod 1, enabling a row post 36 to reach a round hole of the intramedullary nail rod 1 corresponding to the row post 36, inserting the row post 36 into the round hole so as to fix the fixing screw rod 3, rotating the rotating handle 35 by hand to enable the threaded sleeve 34 to rotate on the fixing screw rod 3, enabling the threaded sleeve 34 to move towards the front end of the fixing screw rod 3, enabling the threaded sleeve 34 to move to push a lantern ring 33 to move, and enabling the position of a link rod two 32 to change by the movement of the lantern ring 33 so as to enable an included angle between a link rod one 31 and the link rod two 32 to change; since the length of the external thread section of the fixing screw rod 3 is greater than that of the unthreaded section, the threaded sleeve 34 can be fixed in position through the threads, and since the threaded sleeve 34 and the collar 33 are rotatably connected through the rotating shaft 331, the position of the collar 33 is also fixed, and the position fixation of the first link 31 and the second link 32 is ensured.

Example 2

An image acquisition structure for acquiring a wound of a patient is provided on the basis of embodiment 1.

The image acquisition structure comprises a soft endoscope 45 and a control structure for controlling the direction of the endoscope 45, wherein the endoscope 45 and the control structure enter the intramedullary nail rod 1 from the through hole 21 of the sighting device 2; a window 12 is provided in the intramedullary nail shaft 1 which allows an endoscope 45 to protrude. The wound condition of the fractured end of the fracture can be checked through the endoscope 45, and the direction of the endoscope 45 can be controlled through the control structure, so that the wound condition can be checked in all directions.

The endoscope 45 is a fiberscope, which includes a lens, an optical fiber, and a manipulation knob.

The control structure comprises a fixer and an operating rod 43, the fixer comprises a guide pipe 4 and a fixed handrail 44, the fixed handrail 44 is arranged at the rear end of the guide pipe 4, the fixed handrail 44 is integrally connected with the guide pipe 4, the fixed handrail 44 is positioned outside the through hole 21, and the fixed handrail 44 is connected with the sighting device 2 in a combined manner; an operating lever 43 is provided at the front end of the guide tube 4, and the operating lever 43 is used to control the direction of the front end of the guide tube 4. In the arrangement, the direction of the front end of the guide tube 4 is controlled by the operating rod 43, so that the function of adjusting the direction of the endoscope is realized, and the fixed armrest 44 is connected with the sighting device 2 in a combined manner, so that the whole position of the fixer is fixed, and the stability of the endoscope 45 in the operating process is ensured.

The guide tube 4 is a cylindrical tube, the rear end of the guide tube 4 is integrally connected with the fixed handrail 44, the front end of the guide tube 4 is a front opening, and the front opening is positioned in the area where the window 12 is positioned; the rear end of the guide tube 4 is a rear opening which is positioned on the outer side wall of the fixed handrail 44; the optical fibers of endoscope 45 enter through the rear opening and exit through the front opening. When the endoscope is used, the lens end of the endoscope 45 enters the guide tube 4 from the rear opening and then extends out from the front opening of the guide tube 4, so that the lens of the endoscope 45 extends out from the window 12 of the intramedullary nail rod 1, and the wound condition of the fractured end is obtained.

The fixed armrest 44 is a transverse U-shaped rod, the bottom of the fixed armrest 44 includes an open clamp 441, the open clamp 441 is integrally connected with the fixed armrest 44, and the fixed armrest 44 is connected with the sighting device 2 through the open clamp 441. This arrangement connects the fixed armrest 44 to the sight 2 in combination by the split clamp 441.

An anti-slip gasket is arranged on the inner wall of the split clamp 441 and is fixedly connected with the split clamp 441. This arrangement can increase the friction between the split clip 441 and the sight 2, enhancing the stability of the holder.

The front end of the guide tube 4 comprises a movable tube 41 and a movable connecting structure, and the movable tube 41 is movably connected with the guide tube 4 through the movable connecting structure. This arrangement realizes the adjustment of the orientation of the endoscope 45 by the movable tube 41.

The movable connection structure is a soft elastic connection tube 42, one end of the soft elastic connection tube 42 is integrally connected with the guide end, and the other end is integrally connected with the movable tube 41.

The front end of the operating rod 43 comprises a connecting ring A, the outer side wall of the movable tube 41 comprises a connecting ring B, the connecting ring A is sleeved with the connecting ring B, the connecting ring A is integrally connected with the operating rod 43, and the connecting ring B is integrally connected with the movable tube 41; the operating rod 43 protrudes outside the through-hole 21. In use, the surgeon controls the direction of the movable tube 41 by pulling the operating rod 43.

The rear end of the operating lever 43 includes a pulling grip 431 for the operator to operate, and the pulling grip 431 is integrally connected to the operating lever 43.

The pulling handle 431 is a semicircular rod. When in use, the surgeon hooks the semicircular rod with fingers to draw.

The using method of the embodiment comprises the following steps: the guide tube 4 is placed in the intramedullary nail rod 1, the endoscope 45 is placed in the guide tube 4, and the movable tube 41 at the front end of the guide tube 4 is controlled by the operating rod 43, so that the direction of the front end of the endoscope 45 is controlled, and a doctor can comprehensively check the broken end condition of the fracture wound; after inspection, if no other operation is performed, the fixation assembly is placed inside the intramedullary nail shaft 1, thereby fixing the position of the intramedullary nail.

Example 3

On the basis of the embodiment 2, an irrigation structure for irrigating wounds and diminishing inflammation is arranged, and the irrigation structure is connected with the intramedullary nail rod 1 in a combined manner.

The flushing structure comprises a flushing pipe 5 and a liquid storage bag 51, the flushing pipe 5 is integrally connected with the liquid storage bag 51, and the flushing pipe 5 is communicated with the liquid storage bag 51; the liquid storage bag 51 comprises a liquid inlet, the liquid inlet comprises a thread cover 511 which is connected in a combined way, and the liquid storage bag 51 comprises a soft bag body. When the anti-inflammatory liquid flushing device is used, anti-inflammatory liquid is injected into the liquid storage bag 51 through the liquid inlet, the flushing pipe 5 is placed into the guide pipe 4 from the rear opening of the guide pipe 4, the front end of the flushing pipe 5 extends out of the front opening of the guide pipe 4, the liquid storage bag 51 is squeezed, the anti-inflammatory liquid can be sprayed out, and therefore a wound can be flushed and anti-inflamed.

A spray head 52 is provided at the front end of the flushing pipe 5, the spray head 52 including spray holes, the spray head 52 being integrally connected with the flushing pipe 5. This arrangement allows for a more uniform liquid spray.

The flushing pipe 5 is made of soft silica gel material or soft plastic. The flush tube 5 thus provided is soft, and the direction of flushing at the tip of the flush tube 5 can be controlled by operating the operating lever 43.

The soft capsule body of the reservoir 51 is made of soft silica gel material.

The using method of the embodiment comprises the following steps: the guide tube 4 is placed in the intramedullary nail rod 1, the flushing tube 5 is placed in the guide tube 4, the direction of the movable tube 41 at the front end of the guide tube 4 is controlled through the operating rod 43, so that the flushing direction of the flushing tube 5 is controlled, the front end of the flushing tube 5 extends out of the window 12, the liquid storage bag 51 is squeezed, liquid in the liquid storage bag 51 is sprayed out from the spraying head 52, the fracture wound is fully flushed and is anti-inflammatory, and infection is avoided; after the flushing is finished, if no other operation is performed, the fixing component is placed in the intramedullary nail rod 1, so that the position of the intramedullary nail is fixed, and the intramedullary nail is prevented from being slightly moved.

Example 4

On the basis of embodiment 2, a bone grafting structure for implanting bone particles is provided, and the bone grafting structure is combined and connected with the intramedullary nail rod 1.

The bone grafting structure comprises a bone grafting tube 6 and a bone grafting push rod 61, wherein the bone grafting push rod 61 is positioned inside the bone grafting tube 6. When in use, the bone particles are loaded into the bone grafting tube 6, and the bone grafting push rod 61 is pushed to implant the bone particles into the affected part.

The bone grafting tube 6 is a soft cylindrical tube. When in use, the bone grafting tube 6 is arranged in the guide tube 4, and the direction of the front end of the bone grafting tube 6 can be controlled by the operating rod 43.

The front end of the bone grafting tube 6 is arranged into a pencil shape. This arrangement can enhance the accuracy of implanting bone particles into the affected area.

The rear end of the bone grafting tube 6 extends out of the guide tube 4, and the rear end of the bone grafting tube 6 comprises a trumpet-shaped opening 62. The flared opening 62 facilitates the granulation of bone into the bone graft 6.

The bone grafting push rod 61 is a soft cylindrical rod. The bone grafting push rod 61 arranged in this way can adapt to the trend of the bone grafting tube 6.

The rear end of the bone grafting push rod 61 extends out of the bone grafting tube 6, the rear end of the bone grafting push rod 61 comprises a T-shaped handle 63, and the T-shaped handle 63 and the bone grafting push rod 61 are integrally connected. When in use, the T-shaped handle 63 is held by hand to push and pull the bone grafting push rod 61.

The using method of the embodiment comprises the following steps: the guiding tube 4 is placed in the intramedullary nail rod 1, bone particles are loaded into the bone grafting tube 6 from the horn-shaped opening 62, the bone grafting tube 6 is placed in the guiding tube 4, the direction of the movable tube 41 is controlled through the operating rod 43, so that the direction of the front end of the bone grafting tube 6 is adjusted, the front end of the bone grafting tube 6 extends out of the window 12, the front end of the bone grafting tube 6 is aligned with an affected part needing bone grafting, and the bone grafting push rod 61 is pushed to enable the bone particles to reach the affected part; after the bone grafting is finished, if no other operation is performed, the fixing component is placed in the intramedullary nail rod 1, so that the position of the intramedullary nail is fixed, and the intramedullary nail is prevented from being slightly moved.

The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.

Claims

1. An intramedullary nail and an anti-micromotion positioning component thereof comprise an intramedullary nail rod and a sighting device, and are characterized in that the inside of the intramedullary nail rod is a cavity, the inside of the intramedullary nail rod comprises a fixing component for keeping the stability of the intramedullary nail, and the fixing component is combined and connected with the intramedullary nail rod; the side wall of the intramedullary nail rod comprises a through hole for allowing the fixing component to extend out; two ends of the intramedullary nail rod comprise locking holes, and the locking holes are matched with the locking screws; the sighting device is connected with the intramedullary nail rod in a combined manner.

2. The intramedullary nail and the micromotion-preventing positioning assembly thereof as claimed in claim 1, wherein the fixing assembly comprises a fixing screw rod and a linkage rod, the linkage rod comprises a first linkage rod and a second linkage rod, the first linkage rod is hinged with the front end of the fixing screw rod, the second linkage rod is movably connected with the fixing screw rod, and the free end of the first linkage rod is hinged with the free end of the second linkage rod; the free ends of the first link rod and the second link rod extend out of the through hole.

3. The intramedullary nail and anti-micromotion positioning assembly thereof of claim 2, wherein the free ends of the first and second links are provided with arc-shaped plates with rounded edges.

4. The intramedullary nail and the anti-micromotion positioning assembly thereof according to claim 3, wherein a lantern ring sleeved on the periphery of the fixing screw rod is arranged, the inner diameter of the lantern ring is larger than the diameter of the fixing screw rod, and the second link rod is hinged with the lantern ring through a screw.

5. The intramedullary nail and the anti-micromotion positioning assembly thereof according to claim 4, wherein a pushing structure for pushing the sleeve ring to move is provided, the pushing structure comprises a threaded sleeve and a rotating handle, the threaded sleeve is sleeved on the fixing screw rod, and the threaded sleeve is in threaded connection with the external thread section of the fixing screw rod; the threaded sleeve is rotationally connected with the lantern ring; the rotating handle is detachably connected with the threaded sleeve and extends out of the sighting device.

6. The intramedullary nail and its anti-micromotion positioning assembly of claim 5, wherein a shaft is provided on the collar and a matching rotation slot is provided on the threaded sleeve, the collar and the threaded sleeve being rotatably connected by the shaft.

7. The intramedullary nail and anti-micromotion positioning assembly thereof of claim 6, wherein the threaded sleeve comprises a "cross-flower" shaped slot, the rotation handle comprises a "cross-flower" shaped connector, the "cross-flower" shaped connector is inserted into the "cross-flower" shaped slot, and the rotation handle is inserted into the threaded sleeve through the "cross-flower" shaped slot.

8. The intramedullary nail and its anti-micromotion positioning assembly of claim 7, wherein a row column for stabilizing the position of the fixing assembly is provided at the bottom of the fixing screw, the row column is composed of at least two cylinders, the row column is integrally connected with the fixing screw; the side wall of the intramedullary nail rod is provided with a round hole allowing the row column to extend out, and the row column extends out of the intramedullary nail rod through the round hole.

9. The intramedullary nail and anti-micromotion positioning assembly thereof of claim 8, wherein the bottom of said row of posts, which is the end in contact with the bone cavity wall, is a semi-sphere.

10. The intramedullary nail and its anti-micromotion positioning assembly according to any one of claims 1 to 9, wherein at least two fixation assemblies are provided inside the intramedullary nail shaft.