CN112190322A - Fracture joint bidirectional expansion connecting mechanism and application method thereof - Google Patents
Fracture joint bidirectional expansion connecting mechanism and application method thereof Download PDFInfo
- Publication number
- CN112190322A CN112190322A CN201910611620.1A CN201910611620A CN112190322A CN 112190322 A CN112190322 A CN 112190322A CN 201910611620 A CN201910611620 A CN 201910611620A CN 112190322 A CN112190322 A CN 112190322A
- Authority
- CN
- China
- Prior art keywords
- expansion
- transverse screw
- main body
- screw hole
- bone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 9
- 210000000988 bone and bone Anatomy 0.000 claims description 49
- 208000010392 Bone Fractures Diseases 0.000 claims description 48
- 238000002513 implantation Methods 0.000 claims description 29
- 239000007943 implant Substances 0.000 claims description 16
- 210000001185 bone marrow Anatomy 0.000 claims description 7
- 210000002082 fibula Anatomy 0.000 claims description 7
- 210000002758 humerus Anatomy 0.000 claims description 7
- 210000000623 ulna Anatomy 0.000 claims description 7
- 210000000689 upper leg Anatomy 0.000 claims description 7
- 210000002320 radius Anatomy 0.000 claims description 6
- 210000002303 tibia Anatomy 0.000 claims description 6
- 239000008280 blood Substances 0.000 claims description 5
- 210000004369 blood Anatomy 0.000 claims description 5
- 230000017531 blood circulation Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 4
- 238000010168 coupling process Methods 0.000 claims 4
- 238000005859 coupling reaction Methods 0.000 claims 4
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 206010052428 Wound Diseases 0.000 description 4
- 208000000860 Compassion Fatigue Diseases 0.000 description 3
- 230000003340 mental effect Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000002980 postoperative effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017074 necrotic cell death Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002308 calcification Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000472 traumatic effect Effects 0.000 description 1
- 208000016254 weariness Diseases 0.000 description 1
Images
Classifications
-
- 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary devices, e.g. pins or nails
- A61B17/7233—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone
- A61B17/7258—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone with laterally expanding parts, e.g. for gripping the bone
- A61B17/7275—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone with laterally expanding parts, e.g. for gripping the bone with expanding cylindrical parts
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (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)
- Prostheses (AREA)
Abstract
The invention relates to a fracture joint bidirectional expansion connecting mechanism and an application method thereof, and the fracture joint bidirectional expansion connecting mechanism comprises two semicircular workpieces which are symmetrically folded together and a transverse screw, wherein a limiting structure consisting of a nested male part and a nested female part is arranged between the two semicircular workpieces, the two semicircular workpieces are folded and assembled by mutually nesting the nested male part and the nested female part, an expansion gap is also formed between the two semicircular workpieces which are folded and assembled, the two ends of the expansion gap are respectively provided with a transverse screw hole, and the transverse screw is screwed in the transverse screw hole to ensure that the expansion gap is in an expansion opening state, so that the two semicircular workpieces are expanded to the outer side directions of the two sides of the expansion gap. The mechanism has the advantages of simple structure, low complexity of operation, few screw holes, small wound, high reliability of continuous connection, capability of converting the rotary fixing force of the screw into the expansion fixing force, capability of converting the fixing force, difficulty in loosening the screw, safety and reliability.
Description
Technical Field
The invention relates to the field of human fracture joint mechanisms, in particular to a fracture joint bidirectional expansion connecting mechanism.
Background
At present, people have injuries with fractures caused by carelessness in the production and activity process of daily society. Such as fractures of the humerus, fractures of the femur, fractures of the fibula, fractures of the ulna, and other traumatic problems. When the fracture happens to the parts unfortunately, the current hospital treatment mode is to perform splicing recovery operation on the fracture part. The hospital carries out the continuous grafting recovery operation on the fracture part, generally adopts plates and screws made of fine steel materials or titanium alloy materials, clamps the fracture part by the plates, and adopts the steps of punching holes on the bone and fixing the plates by a plurality of screws. The main disadvantages of this splicing method are: in order to ensure the clamping firmness, a plurality of screw holes are respectively drilled on bones at two ends of a fracture part to be fixed with a plate, so that more wounds are generated on the bones of a human body, and the physical pain and mental strain of a patient are increased; and the bone at the two ends of the fracture is provided with excessive screw holes, so that the bone is easy to become brittle and loose, the hidden danger of re-fracture is easy to occur in the future, and the probability of the occurrence of the situation is higher especially for the older patients. Therefore, the applicant considers that the prior art means has great potential safety hazard in the future for the fracture splicing mode, has high secondary trauma degree to human bones, great physical pain and mental weariness of patients and the like, and needs to redevelop and design another different technical means mode to relieve the treatment pain and the postoperative potential safety hazard of people who have unfortunate fractures.
Disclosure of Invention
The invention aims to solve the problems and the defects, and provides a two-way expansion connecting mechanism for fracture union and an application method thereof, wherein the expansion connecting mechanism adopts a special structural design, can be sleeved in a marrow inner cavity carried by a bone, can be fixedly jointed by utilizing expansion force, has no more than two holes or screw holes to be formed at two ends of a fractured bone, greatly relieves the physical pain and mental fracture of people in the treatment process, effectively controls the number of the holes formed on the bone, effectively reduces the secondary trauma degree of the bone of a human body, can effectively prevent the bone from becoming brittle and loose, and avoids the possibility of fracture after postoperative recovery; the mechanism has the advantages of simple structure, low complexity of operation implementation, small wound and high splicing reliability, changes the rotation fixing force of the screw into the expansion fixing force, performs the conversion of the fixing force, is not easy to cause the situation of loosening of the screw, and is safe and reliable.
The technical scheme of the invention comprises the following two implementation means:
the fracture joint bidirectional expansion connecting mechanism is characterized by comprising an expansion implant main body, a lower expansion block, a vertical screw and a transverse screw which are integrally formed, wherein the lower part of the expansion implant main body is provided with a groove position which is accommodated by the expansion block and is provided with a wedged main inclined plane; the upper part of the expansion implantation main body is also provided with a vertical through hole which is communicated from the top to the middle part of the expansion implantation main body, and a vertical screw hole which is communicated from the bottom of the vertical through hole to the groove position is also arranged in the expansion implantation main body; the inner side of the lower expansion block is correspondingly provided with a wedging auxiliary inclined plane, the wedging auxiliary inclined plane is also provided with a vertical screw hole, the wedging auxiliary inclined plane is attached to the wedging main inclined plane, a vertical screw penetrates through the vertical screw hole of the expansion implant main body and is locked into the vertical screw hole of the lower expansion block, and the lower expansion block moves upwards along the wedging auxiliary inclined plane and the wedging main inclined plane under the locking and pulling of the vertical screw, so that the outer side surface of the lower expansion block protrudes outwards; the upper part of the expansion implantation main body is also provided with an expansion gap which is arranged across the whole upper part of the expansion implantation main body, the expansion gap is also provided with a transverse screw hole which is arranged across the expansion gap, and the aperture of the transverse screw hole is smaller than the diameter of the cross section of the transverse screw; the horizontal screw is screwed in the horizontal screw hole, so that the upper part of the expansion implantation main body is of an expansion burst structure towards two sides, and the expansion gap is of an expansion support crack structure. The expansion connecting mechanism is applied to the fracture of the humerus, the ulna, the radius, the femur, the tibia or the fibula of a human body close to the joint bone in a continuous connection mode:
the joint bone is provided with a hole, the outer side surface of the end of the fractured bone is also provided with a screw hole for a transverse screw to pass through, the lower end of the expansion implantation main body and the lower expansion block are nested in the hole, the vertical screw is screwed, so that the lower expansion block moves upwards along the inclined surfaces of the wedging main inclined surface and the wedging auxiliary inclined surface, and the lower end of the expansion implantation main body and the lower expansion block form expansion fixing force; the upper part of the expansion implantation main body is embedded into a marrow inner cavity of the fractured bone end, the transverse screw penetrates through a screw hole on the outer side of the fractured bone end and is locked into a transverse screw hole of the expansion implantation main body, so that an expansion gap at the upper end of the expansion implantation main body is expanded, expansion fixing force for the inner cavity of the fractured bone end is formed, and the purpose of joint connection at the joint bone is fulfilled.
Secondly, a fracture joint bidirectional expansion connecting mechanism and an application method thereof are characterized in that the connecting mechanism comprises two semicircular workpieces which are symmetrically folded together and a transverse screw, a limiting structure is arranged between the two semicircular workpieces, the limiting structure is composed of a nested male part and a nested female part, and the two semicircular workpieces are folded and assembled together through mutual nesting of the nested male part and the nested female part; an expansion gap is formed between the two semicircular workpieces which are assembled in a butt joint mode, two ends of the expansion gap are respectively provided with a transverse screw hole, the aperture of each transverse screw hole is smaller than the diameter of the cross section of each transverse screw, each transverse screw is screwed in each transverse screw hole, the expansion gap is in an expansion and unfolding state, and the two semicircular workpieces are expanded to the outer side directions of two sides of the expansion gap; blood circulation and bone marrow through holes are respectively formed on the two semicircular workpieces; the application method of the fracture in the middle of humerus, ulna, radius, femur, tibia or fibula of a human body comprises the following steps: the connecting mechanism is sleeved in the marrow cavities at two ends of the broken bone, and two ends of the broken bone are connected together along the connecting mechanism, and the transverse screws penetrate through the through holes at two ends of the broken bone and are locked into the transverse screw holes, so that two semicircular workpieces of the connecting mechanism expand in the marrow cavities at two ends of the broken bone to form expansion fixing force, and the purpose of fracture connection is fulfilled.
The invention has the beneficial effects that: the invention adopts the technical scheme that the bone fracture plate can be sleeved in a marrow cavity carried by a bone, and fixed and connected by utilizing expansion force, and the number of holes or screw holes to be formed at two ends of the fractured bone is not more than two, so that the body pain and spirit fracture of people in the treatment process are greatly reduced, the number of the holes formed in the bone is effectively controlled, the secondary wound degree of the bone of a human body is effectively reduced, the bone can be effectively prevented from becoming brittle and loose, and the possibility of fracture after postoperative healing is avoided; the mechanism has the advantages of simple structure, low complexity of operation implementation, small wound and high splicing reliability, changes the rotation fixing force of the screw into the expansion fixing force, performs the conversion of the fixing force, is not easy to cause the situation of loosening of the screw, and is safe and reliable.
Drawings
Fig. 1 is a schematic view of the principle structure of the solution of the invention to be applied to bone.
Fig. 2 is a schematic perspective view of a first embodiment of the present invention.
Fig. 3 is a schematic sectional structure diagram of a first embodiment of the present invention.
Fig. 4 is an exploded view of the first embodiment of the present invention.
Fig. 5 is a schematic perspective view of a second embodiment of the present invention.
Fig. 6 is an exploded view of a second embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The first embodiment is as follows:
as shown in fig. 1 to 4, the invention relates to a fracture joint bidirectional expansion connecting mechanism and an application method thereof, the expansion connecting mechanism comprises an expansion implant main body 11, a lower expansion block 12, a vertical screw 13, a transverse screw 14 and other main components which are integrally formed, and the main components are all processed by adopting refined steel or titanium alloy materials. Wherein, as shown in fig. 3, the lower part of the expansion implant body 11 is provided with a groove position 16 which is used for accommodating the expansion block 12 and is provided with a wedged main inclined surface 15. A vertical through hole 17 penetrating from the top to the middle is further formed in the upper portion of the expansion implantation main body 11, and a vertical screw hole 18 penetrating from the bottom of the vertical through hole 17 to the groove 16 is further formed in the expansion implantation main body 11; correspondingly, as shown in fig. 4, the inner side of the lower expansion block 12 is correspondingly provided with a wedging auxiliary inclined surface 121, the wedging auxiliary inclined surface 121 is further provided with a vertical screw hole 18, the wedging auxiliary inclined surface 121 and the wedging main inclined surface 15 are attached together, the lower expansion block 12 moves upwards along the wedging auxiliary inclined surface 121 and the wedging main inclined surface 15 by penetrating a vertical screw 13 from the vertical screw hole 18 of the expansion implant body 11 into the vertical screw hole 18 of the lower expansion block 12 and locking the vertical screw 13, so that the outer side surface of the lower expansion block 12 protrudes outwards, that is, as shown in the lower part of fig. 1.
As shown in fig. 2 to 4, an expansion gap 19 is formed across the entire upper portion of the expansion implant body 11, a transverse screw hole 20 is formed across the expansion gap 19 in the expansion gap 19, and the diameter of the transverse screw hole 20 is smaller than the cross-sectional diameter of the transverse screw 14; the transverse screw 14 is screwed into the transverse screw hole 20, so that the upper portion of the expandable implant body 11 is in an expandable burst structure in both lateral directions, and the expansion gap 19 is in an expandable burst structure.
The joint splicing mechanism is applied to the fracture of the humerus, the ulna, the radius, the femur, the tibia or the fibula of a human body close to the joint bone in a splicing way:
the joint bone is provided with a hole 100, the outer side surface of the fractured bone end is also provided with a screw hole for a transverse screw 14 of a joint continuous connection mechanism to pass through, the lower end of the expansion implant main body 11 and the lower expansion block 12 are nested in the hole 100, a vertical screw 13 is screwed, the lower expansion block 12 moves upwards along the inclined surfaces of the wedging main inclined surface 15 and the wedging auxiliary inclined surface 121, the lower end of the expansion implant main body 11 and the lower expansion block 12 form expansion fixing force, the upper part of the expansion implant main body 11 is nested in a bone marrow inner cavity 200 of the fractured bone end, the transverse screw 14 penetrates through the screw hole on the outer side of the fractured bone end and is locked in a transverse screw hole 20 of the expansion implant main body 11, an expansion gap 19 of the expansion implant main body 11 is expanded, expansion fixing force on the upper end of the fractured bone end inner cavity is formed, and the joint bone continuous connection purpose is completed. From this application example, it can be intuitively derived that: the invention utilizes the expansion force to carry out fixed splicing, the number of holes or screw holes to be arranged at two ends of the fractured bone is not more than two, thereby greatly relieving the physical pain and spirit fracture of people in the treatment process, and the number of the holes arranged on the bone is effectively controlled, thereby effectively reducing the secondary trauma degree of the bones of the human body.
In order that the lower expansion block does not shift or shift during the locking process, as shown in fig. 4, a guide structure is further arranged between the wedging auxiliary inclined plane 121 and the wedging main inclined plane 15, and the guide structure is composed of a guide inclined groove 5 and a guide inclined protrusion 6.
The positions of the guide inclined protrusion 6 and the guide inclined groove 5 on the wedging auxiliary inclined plane 121 and the wedging main inclined plane 15 can be interchanged. As also shown in FIG. 2, in the present embodiment, the inclined guide projection 6 is provided on the lower expansion block 12, and the inclined guide groove 5 is provided on the expanded implant body 11 as an example.
Still further, in order to further improve the friction fixing force in the implantation application process of the present invention, no slipping occurs, as shown in fig. 1, fig. 2 and fig. 3, the peripheries of the lower part of the main body 11 and the outer side surface of the lower expansion block 12 are further provided with anti-slip textures 7, and by the design of the anti-slip textures 7, the connection structure can form a better fixing effect in the hole 100 of the bone, and the problems of slipping and poor fixing can not occur.
In order to avoid calcification or necrosis of the bone at the implantation site, as shown in fig. 2 and 4, a plurality of blood through pores 8 are further formed on the expansion implantation main body 11 and the lower expansion block 2. Therefore, the blood can be well prevented from being blocked, and the situation that the bone is calcified and necrosed due to long-term non-blood circulation can be prevented.
Example two:
the difference between the second embodiment and the first embodiment is that the first embodiment is applied to the joint between the joint bone 1 and the main bone 2, and the second embodiment is suitable for the joint when the fracture occurs in the middle or near the middle of the main bone 2. The specific scheme structure of the second embodiment is as follows: as shown in fig. 1, 5 and 6, the workpiece clamp comprises two semicircular workpieces 21 which are symmetrically folded together and a transverse screw 14, wherein a limiting structure is arranged between the two semicircular workpieces 21, the limiting structure is composed of a nesting male part 211 and a nesting female part 212, and the two semicircular workpieces 21 are folded and assembled together by nesting the nesting male part 211 and the nesting female part 212. An expansion gap 19 is formed between the two semicircular workpieces 21 which are assembled in an involutory mode, two ends of the expansion gap 19 are respectively provided with a transverse screw hole 20, the aperture of each transverse screw hole 20 is smaller than the section diameter of each transverse screw 14, each transverse screw 14 is screwed in each transverse screw hole 20, the expansion gap 19 is in an expansion and expansion state, and the two semicircular workpieces 21 are expanded towards the outer side directions of the two sides of the expansion gap 19. As shown in fig. 5 and 6, blood and marrow through holes 24 are respectively formed on the two semicircular workpieces 21, so as to facilitate the blood and marrow through in the bone and prevent the bone from necrosis.
The scheme application method of the second embodiment is as follows: as shown in the upper part of fig. 1, the connection mechanism is applied to the fracture of the middle part of the humerus, the ulna, the radius, the femur, the tibia or the fibula of a human body: the connecting mechanism is sleeved in the bone marrow inner cavities 200 at two ends of the broken bone, and the two ends of the broken bone are butted together along the connecting mechanism, and a transverse screw 14 penetrates through the through hole 300 at the two ends of the broken bone and is locked into the transverse screw hole 20, so that the two semicircular workpieces 21 of the connecting mechanism expand in the bone marrow inner cavities 200 at two ends of the broken bone to form expansion fixing force, and the purpose of fracture splicing is fulfilled.
Claims (5)
1. A fracture joint bidirectional expansion connecting mechanism and an application method thereof are characterized in that: the expansion connecting mechanism comprises an expansion implant main body (11), a lower expansion block (12), a vertical screw (13) and a transverse screw (14) which are integrally formed, wherein
The lower part of the expansion implantation main body (11) is provided with a groove position (16) which is accommodated by the expansion block (12) and is provided with a wedging main inclined plane (15);
a vertical through hole (17) which is penetrated from the top to the middle part is also arranged at the upper part of the expansion implantation main body (11), and a vertical screw hole (18) which is penetrated from the bottom of the vertical through hole (17) to the groove position (16) is also arranged in the expansion implantation main body (11);
the inner side of the lower expansion block (12) is correspondingly provided with a wedging auxiliary inclined plane (121), the wedging auxiliary inclined plane (121) is also provided with a vertical screw hole (18), the wedging auxiliary inclined plane (121) is attached to the wedging main inclined plane (15), a vertical screw (13) penetrates through the vertical screw hole (18) of the expansion implantation main body (11) and is locked into the vertical screw hole (18) of the lower expansion block (12), the lower expansion block (12) moves upwards along the wedging auxiliary inclined plane (121) and the wedging main inclined plane (15) under the locking and pulling of the vertical screw (13), and the outer side face of the lower expansion block (12) protrudes outwards;
an expansion gap (19) which is arranged across the whole upper part of the expansion implantation main body (11) is further arranged at the upper part of the expansion implantation main body, a transverse screw hole (20) which is arranged across the expansion gap (19) is further arranged on the expansion gap (19), and the aperture of the transverse screw hole (20) is smaller than the cross section diameter of the transverse screw (14); the transverse screw (14) is screwed in the transverse screw hole (20), so that the upper part of the expansion implantation main body (11) is in an expansion burst structure towards two sides, and the expansion gap (19) is in an expansion support burst structure;
the expansion connecting mechanism is applied to the fracture of the humerus, the ulna, the radius, the femur, the tibia or the fibula of a human body close to the joint bone in a continuous connection mode:
a hole (100) is formed in a joint bone, a screw hole for a transverse screw (14) to pass through is further formed in the outer side face of the end of the fractured bone, the lower end of the expansion implantation main body (11) and the lower expansion block (12) are nested in the hole (100), and a vertical screw (13) is screwed so that the lower expansion block (12) moves upwards along the inclined planes of the wedging main inclined plane (15) and the wedging auxiliary inclined plane (121), and the lower end of the expansion implantation main body (11) and the lower expansion block (12) form expansion fixing force; the upper part of the expansion implantation main body (11) is embedded into a marrow inner cavity (200) of the fractured bone end, the transverse screw (14) penetrates through a screw hole on the outer side of the fractured bone end and is locked into a transverse screw hole (20) of the expansion implantation main body (11), so that an expansion gap (19) at the upper end of the expansion implantation main body (11) is expanded, expansion fixing force for the inner cavity of the fractured bone end is formed, and the purpose of continuous joint at the joint bone is fulfilled.
2. The fracture splicing bi-directional expansion coupling mechanism of claim 1, wherein: and a guide structure is also arranged between the wedging auxiliary inclined plane (121) and the wedging main inclined plane (15), and the guide structure is composed of a guide chute (5) and a guide inclined bulge (6).
3. The fracture splicing bi-directional expansion coupling mechanism of claim 1, wherein: anti-skid textures (7) are further arranged on the lower portion of the expansion implant main body (11) and the periphery of the outer side surface of the lower expansion block (12).
4. The fracture splicing bi-directional expansion coupling mechanism of claim 1, wherein: the expansion implantation main body (11) and the lower expansion block (2) are also provided with a plurality of blood through pores (8).
5. The utility model provides a two-way inflation coupling mechanism of fracture continuous joint which characterized in that: the connecting mechanism comprises two semicircular workpieces (21) which are symmetrically folded together and a transverse screw (14), wherein a limiting structure is arranged between the two semicircular workpieces (21), the limiting structure is composed of a nested male part (211) and a nested female part (212), and the two semicircular workpieces (21) are folded and assembled together through mutual nesting of the nested male part (211) and the nested female part (212);
an expansion gap (19) is formed between the two semicircular workpieces (21) which are assembled in an involutory mode, two ends of the expansion gap (19) are respectively provided with a transverse screw hole (20), the aperture of each transverse screw hole (20) is smaller than the section diameter of each transverse screw (14), each transverse screw (14) is screwed in each transverse screw hole (20), so that the expansion gap (19) is in an expansion and expansion state, and the two semicircular workpieces (21) expand towards the outer side direction of two sides of the expansion gap (19); blood circulation and bone marrow passing holes (24) are respectively arranged on the two semicircular workpieces (21);
the application method of the fracture in the middle of humerus, ulna, radius, femur, tibia or fibula of a human body comprises the following steps: the connecting mechanism is sleeved in the bone marrow inner cavities (200) at the two ends of the broken bone, and the two ends of the broken bone are connected together along the connecting mechanism, and a transverse screw (14) penetrates through the through holes (300) at the two ends of the broken bone and is locked into the transverse screw hole (20), so that two semicircular workpieces (21) of the connecting mechanism expand in the bone marrow inner cavities (200) at the two ends of the broken bone to form expansion fixing force, and the purpose of fracture connection is fulfilled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910611620.1A CN112190322A (en) | 2019-07-08 | 2019-07-08 | Fracture joint bidirectional expansion connecting mechanism and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910611620.1A CN112190322A (en) | 2019-07-08 | 2019-07-08 | Fracture joint bidirectional expansion connecting mechanism and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112190322A true CN112190322A (en) | 2021-01-08 |
Family
ID=74004427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910611620.1A Pending CN112190322A (en) | 2019-07-08 | 2019-07-08 | Fracture joint bidirectional expansion connecting mechanism and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112190322A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4366635A4 (en) * | 2021-07-07 | 2025-05-14 | Surgical Design Innovations II, LLC | Bone fracture fixation device and corresponding systems and methods |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4492226A (en) * | 1979-10-10 | 1985-01-08 | Vsesojuzny Nauchno-Issledovatelsky I Ispytatelny Institut Meditsinskoi Tekhniki | Device for uniting bone fragments |
| US5032133A (en) * | 1990-01-23 | 1991-07-16 | Orthovations, Inc. | Method and apparatus for expanding a shaft for use in prosthesis |
| CN1826086A (en) * | 2003-08-29 | 2006-08-30 | 斯恩蒂斯有限公司 | intramedullary nail |
| KR20160010759A (en) * | 2014-07-18 | 2016-01-28 | 주식회사 케이씨스 | Shrinkage or expansion possible functional intramedullary fixation apparatus |
| CN207871032U (en) * | 2017-01-10 | 2018-09-18 | 山东冠龙医疗用品有限公司 | A kind of tooth-like structure of elasticity can strut Invasive lumbar fusion device |
| US20180344366A1 (en) * | 2017-04-30 | 2018-12-06 | Felasfa Wodajo | Expandable osseointegration bone fixation apparatus for use in a variety of settings |
-
2019
- 2019-07-08 CN CN201910611620.1A patent/CN112190322A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4492226A (en) * | 1979-10-10 | 1985-01-08 | Vsesojuzny Nauchno-Issledovatelsky I Ispytatelny Institut Meditsinskoi Tekhniki | Device for uniting bone fragments |
| US5032133A (en) * | 1990-01-23 | 1991-07-16 | Orthovations, Inc. | Method and apparatus for expanding a shaft for use in prosthesis |
| CN1826086A (en) * | 2003-08-29 | 2006-08-30 | 斯恩蒂斯有限公司 | intramedullary nail |
| KR20160010759A (en) * | 2014-07-18 | 2016-01-28 | 주식회사 케이씨스 | Shrinkage or expansion possible functional intramedullary fixation apparatus |
| CN207871032U (en) * | 2017-01-10 | 2018-09-18 | 山东冠龙医疗用品有限公司 | A kind of tooth-like structure of elasticity can strut Invasive lumbar fusion device |
| US20180344366A1 (en) * | 2017-04-30 | 2018-12-06 | Felasfa Wodajo | Expandable osseointegration bone fixation apparatus for use in a variety of settings |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4366635A4 (en) * | 2021-07-07 | 2025-05-14 | Surgical Design Innovations II, LLC | Bone fracture fixation device and corresponding systems and methods |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5808393B2 (en) | Bone fixation system for pressing K-wire | |
| CN215018750U (en) | Transverse connector and spinal internal fixing system | |
| CN112190322A (en) | Fracture joint bidirectional expansion connecting mechanism and application method thereof | |
| CN111544104A (en) | Mortise and tenon structure splicing type fracture reduction pressurization internal fixation device | |
| CN215384997U (en) | Limbs fracture auxiliary reduction device for orthopedic operation | |
| CN211723389U (en) | Fracture joint bidirectional expansion connecting mechanism | |
| WO2015117207A1 (en) | Tightening joints for versatile modular systems for osteosynthesis | |
| JP3220942U (en) | Locking external fixation device for the treatment of tibial fractures | |
| CN106691558A (en) | Tibia proximal combined type fixing device | |
| CN201631368U (en) | Hidden reset pedicle screw with fractured surface | |
| CN203138661U (en) | Combined type acetabular fracture reduction internal fixator | |
| CN112932747A (en) | Pelvis-enhanced hip joint prosthesis | |
| CN208741123U (en) | A kind of distal tibial rear side lockplate | |
| CN217040264U (en) | Bone fracture plate | |
| CN103919633A (en) | Combined type spine minimally invasive fusion device | |
| CN217510585U (en) | Fixed angle positioning type locking screw | |
| CN108652723A (en) | A kind of spicule fixing device of long bone fracture treatment | |
| CN205054410U (en) | Shin bone coaptation board | |
| TWI573558B (en) | Bone plate set having screws with a plurality of threaded areas | |
| CN204092156U (en) | Bidirectional locking pressurized bone plate | |
| CN209377713U (en) | A kind of distal tibial aerofoil profile locking steel plate | |
| CN107280752A (en) | Femoral shaft transverse fracture lateral wing type bone plate | |
| CN210727849U (en) | Mortise and tenon structure splicing type fracture reduction pressurization internal fixation device | |
| CN108158639B (en) | External fixing rack and fractures equipment | |
| CN204520935U (en) | A kind of Lucking compression plate with door-hinge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210108 |