CN108309508B - Coracoid ligament rebuilding and positioning device - Google Patents
Coracoid ligament rebuilding and positioning device Download PDFInfo
- Publication number
- CN108309508B CN108309508B CN201810065201.8A CN201810065201A CN108309508B CN 108309508 B CN108309508 B CN 108309508B CN 201810065201 A CN201810065201 A CN 201810065201A CN 108309508 B CN108309508 B CN 108309508B
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- Prior art keywords
- rod
- drilling
- coracoid
- hook
- outer rod
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- 210000003041 ligament Anatomy 0.000 title claims abstract description 29
- 238000005553 drilling Methods 0.000 claims abstract description 69
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 11
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 claims description 9
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 210000000988 bone and bone Anatomy 0.000 abstract description 5
- 230000035515 penetration Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 210000003109 clavicle Anatomy 0.000 description 3
- 206010061223 Ligament injury Diseases 0.000 description 2
- 210000000142 acromioclavicular joint Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 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
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 210000001991 scapula Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0805—Implements for inserting tendons or ligaments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1714—Guides or aligning means for drills, mills, pins or wires for applying tendons or ligaments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1778—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the shoulder
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0811—Fixation devices for tendons or ligaments
-
- 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
- A61B2017/564—Methods for bone or joint treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
- A61F2/0811—Fixation devices for tendons or ligaments
- A61F2002/0847—Mode of fixation of anchor to tendon or ligament
- A61F2002/0858—Fixation of tendon or ligament between anchor and bone, e.g. interference screws, wedges
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0008—Fixation appliances for connecting prostheses to the body
Abstract
The invention provides a coracoid ligament reconstruction positioning device, comprises an inner rod and an outer rod, the outer rod can slide relative to the inner rod in the axial direction; the inner rod comprises a guiding part, a resetting part and a hook, the guide part, the reset part and the hooks are sequentially arranged in the length extension direction of the inner rod; the guide part and the reset part form an included angle in the length extending direction, and the guide part is nested and arranged in the axial hole of the outer rod; the guide part and the reset part are integrally formed, and the reset part is integrally formed or fixedly connected with the hook; the outer rod is provided with a locking structure which can limit the axial relative sliding between the outer rod and the inner rod. The invention can be applied to the reduction fixation between coracoid process and collarbone, can play a role in guiding bone tunnel drilling, can also help to reconstruct the penetration of ligament in bone tunnel, and ensures the convenience and minimally invasive performance of operation.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to a coracoid ligament reconstruction positioning device.
Background
The coracoid ligament plays a very important role in stabilizing the acromioclavicular joint, maintains a constant relationship between the scapula and the collarbone, and ensures the stability of the acromioclavicular joint in the vertical direction. Clinically, coracoid ligament injury usually occurs with acromioclavicular ligament injury, mostly caused by landing the shoulders after a fall. Because of poor healing capacity of the acromioclavicular ligament and the coracoid ligament, the effect of the general conservative treatment is poor, and surgery is required for coracoid ligament reconstruction. Because the coracoid ligament is damaged, often still can appear the condition that the clavicle shifted, further increased the rebuilding operation degree of difficulty of coracoid ligament, among the prior art, lack one kind and can reset fixedly to the clavicle to can help reliably punch, guide rebuilding the device that the material penetrated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a coracoid ligament reconstruction positioning device.
The coracoid ligament reconstruction positioning device provided by the invention comprises an inner rod and an outer rod, wherein the outer rod can slide relative to the inner rod in the axial direction;
the inner rod comprises a guide part, a reset part and a hook, and the guide part, the reset part and the hook are sequentially arranged in the length extension direction of the inner rod; the guide part and the reset part form an included angle in the length extending direction, and the guide part is nested and arranged in the axial hole of the outer rod;
the guide part and the reset part are integrally formed, and the reset part is integrally formed or fixedly connected with the hook;
the outer rod is provided with a locking structure which can limit the axial relative sliding between the outer rod and the inner rod.
Preferably, the outer rod comprises a hand-held part and a drilling positioning part, and the hand-held part and the drilling positioning part are integrally formed or are fixedly connected;
the drilling positioning part comprises a drilling positioning rod and a drilling positioning ring, and the drilling positioning ring is positioned on one end of the drilling positioning rod along the axial direction.
Preferably, the locking structure is located on the hand-held portion, the locking structure comprising a contact portion; the locking structure can be switched between two states of a locking state and a releasing state by rotating along the circumferential direction:
in the locking state, the contact part and the guide part are contacted with each other;
in the released state, the contact portion and the guide portion are separated from each other.
Preferably, the outer circumferential surface of the guide part comprises a plurality of avoidance surfaces and arc surfaces which are sequentially connected;
the arc surface is matched with the shape of the inner wall of the outer rod axial hole, and an avoidance space is formed between the avoidance surface and the inner wall of the outer rod axial hole;
in the loosening state, the whole contact part is positioned in the avoiding space; in the locking state, the contact part is contacted with the arc surface.
Preferably, a plurality of arc grooves which are uniformly distributed along the axial direction are formed in the arc surface, arc convex strips are arranged on the contact part, and the arc convex strips are matched with the arc grooves; or,
the arc surface and the contact part are respectively provided with matched external threads and internal threads.
Preferably, the outer rod and the guide part are relatively fixed in the circumferential direction;
the outer shaft is provided with a limited rotation convex strip on the inner wall of the axial hole, and the guiding part is provided with a limited rotation groove.
Preferably, the central axis of the drilling locating ring is intersected with the hook;
the drilling locating ring is hinged with the drilling locating rod.
Preferably, the drilling positioning rod comprises a fixed rod and an adjusting rod, the fixed rod is in sliding connection with the adjusting rod, and the drilling positioning ring is hinged on the adjusting rod;
the fixed rod is provided with a rack, the drilling positioning ring is provided with a gear, and the rack is matched with the gear; or alternatively;
still contain the transfer line, be provided with the nut on the dead lever, be provided with the worm wheel on the drilling holding ring, the transfer line forms lead screw and worm respectively along axial both ends, and nut and lead screw assorted are decided, worm wheel and worm assorted.
Preferably, a bearing is arranged on the adjusting rod, and the transmission rod is arranged in the bearing in a penetrating way;
the fixed rod is provided with a switch screw which can be contacted with or separated from the adjusting rod along the axial movement.
Preferably, the outer rod is also provided with a rolling wheel and a push-pull button.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can be applied to the reduction fixation between coracoid process and collarbone, can play a role in guiding bone tunnel drilling, can also help to reconstruct the penetration of ligament in bone tunnel, and ensures the convenience and minimally invasive performance of operation.
2. According to the invention, the inner rod is connected with the outer rod in a nested way, when the locking structure is released, the outer rod can be quickly moved to be in place, and when the locking structure is locked, the contact force between the drilling positioning part and the operation part can be further realized through threads.
3. The central axis angle of the drilling locating ring can be adjusted, the drilling locating ring is suitable for the requirements of different drilling angles, and when the drilling locating ring rotates, the length of the drilling locating rod is changed simultaneously, so that the hollow drill always points to the position of the crotch in operation, and the penetration of the nickel titanium wire ring is facilitated.
4. The rolling wheel is arranged in the invention, which is beneficial to up-and-down adjustment of the nickel titanium wire ring, and pushing and pulling the button can facilitate the pushing operation of the outer rod.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the locking mechanism in an unlocked state;
FIG. 3 is a schematic view of a locking structure in a locked state;
FIG. 4 is a schematic view of a structure of a drilling positioning rod according to an embodiment;
fig. 5 is a schematic view of a structure of a drilling positioning rod in a variation.
The figure shows:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the embodiment shown in fig. 1, the coracoid ligament reconstruction positioning device provided by the invention comprises an inner rod 1 and an outer rod 2. The inner rod 1 comprises a guide part 3, a reset part 4 and a hook 5 which are sequentially arranged in the axial extension direction, wherein an included angle exists between the guide part 3 and the reset part 4 in the length extension direction, the guide part 3 and the reset part 4 are integrally formed, and the reset part 4 and the hook 5 are integrally formed or are fixedly connected; the outer rod 2 comprises a holding part 7 and a drilling positioning part 8, the holding part 7 and the drilling positioning part 8 are integrally formed or are fixedly connected, the drilling positioning part 8 comprises a drilling positioning rod 9 and a drilling positioning ring 10, and the drilling positioning ring 10 is positioned at one end of the drilling positioning rod 9 along the axial direction. The inner rod 1 and the outer rod 2 are internally provided with axial holes, the guide part 3 is nested and installed in the axial holes of the outer rod 2, the outer rod 2 can slide up and down relative to the guide part 3, the axial holes of the inner rod 1 are used for penetrating the nickel titanium wire ring 26 in the operation process, and the reconstructed ligament is guided to penetrate and pass out from the bone tunnel. The hand-held part 7 is provided with the locking structure 6, the locking structure 6 can be switched between two states of a locking state and a releasing state, under the releasing state, the outer rod 2 can slide relative to the guide part 3 to quickly reach a target position, under the locking state, the outer rod 2 and the guide part 3 can be axially fixed relatively, on one hand, the coracoid process and the collarbone are fixed, and on the other hand, stable guide is provided for the use of the hollow drill. Preferably, the outer rod 2 is also provided with a rolling wheel 24 and a push-pull button 25, the nickel titanium wire ring 26 is wound on the rolling wheel 24 after penetrating out from the inner rod 1, and then the adjustment of the nickel titanium wire ring 26 in the up-down direction can be realized through the rolling wheel 24; pushing and pulling the push button 25 facilitates the relative sliding of the outer rod 2 on the guide 3.
As shown in fig. 2 and 3, the locking structure 6 includes contact portions 11, and a plurality of the contact portions 11 are distributed along the circumferential direction; the cross section shape of the guide part 3 is in a playground runway shape, the outer peripheral surface of the guide part 3 comprises a plurality of avoidance surfaces 12 and arc surfaces 13 which are sequentially connected, the arc surfaces 13 are matched with the shape of the inner wall of the axial hole of the outer rod 2, and avoidance spaces are formed between the avoidance surfaces 12 and the inner wall of the axial hole of the outer rod 2. As shown in fig. 2, in the released state, the contact portion 11 is entirely located in the escape space, and the contact portion 11 is not in contact with the guide portion 3, and at this time, the outer rod 2 and the guide portion 3 are freely slidable in the axial direction; as shown in fig. 3, the locking structure 6 is rotated circumferentially to complete the conversion from the release state to the locking state, at this time, the contact portion 11 contacts with the arc surface 13, in theory, the axial fixation between the outer rod 2 and the guide portion 3 can be achieved by friction force, preferably, the contact portion 11 can use rubber materials, but the outer rod 2 and the guide portion 3 can not be effectively fixed by friction force alone, so in the embodiment, the arc surface 13 and the contact portion 11 are respectively provided with matched external threads and internal threads, when the contact portion 11 rotates to be in contact with the arc surface 13, the locking in the up-down direction is completed by the threads, and the thread structure can also enable the position of the outer rod 2 on the guide portion 3 to be finely adjusted, so that the fixation force of the invention on an operation site such as a clavicle is further increased, and two purposes are achieved. Preferably, a plurality of arc grooves uniformly distributed along the axial direction are formed in the arc surface 13, arc convex strips are arranged on the contact portion 11 and are matched with the arc grooves, when the contact portion 11 is rotated to be in contact with the arc surface 13, the arc convex strips are rotated into the arc grooves, axial fixation between the outer rod 2 and the guide portion 3 can be realized, fixation can be stronger relative to a threaded structure, and fine adjustment of the position of the outer rod 2 cannot be performed after fixation. Preferably, the axial hole inner wall of the outer rod 2 is provided with a limited rotation convex strip 14, the guide part 3 is provided with a limited rotation groove, and through the arrangement of the limited rotation convex strip 14 and the limiting groove, the outer rod 2 and the limiting part can be prevented from rotating relatively in the circumferential direction, the angle orientation of the drilling locating ring 10 is affected, and of course, the circumferential fixation between the outer rod 2 and the limiting part can be realized through the cross section shape of the outer rod 2 and the limiting part. Preferably, only one contact portion 11 may be provided, so that the manufacturing is simpler, but the outer rod 2 is easily inclined with respect to the inner rod 1, thereby affecting the fixing effect.
The central axis of the drilling locating ring 10 is intersected with the hook 5 so that the hollow drill can reach the position of the hook 5, but in the operation process, the drilling angle is selected in various ways, as shown in fig. 4 and 5, the drilling locating ring 10 is hinged with the drilling locating rod 9, so that the central axis angle of the drilling locating ring 10 can be adjusted, and in order to prevent the central axis angle of the drilling locating ring 10 from being changed, the central axis deviates from the position of the hook 5, the drilling locating rod 9 is designed to comprise a structure of sliding connection of a locating rod 15 and an adjusting rod 16, and the locating rod 15 and the adjusting rod 16, wherein the drilling locating ring 10 is hinged on the adjusting rod 16. In the embodiment shown in fig. 4, a rack 17 is disposed on the fixed rod 15, a gear 18 is disposed on the drilling positioning ring 10, the rack 17 is matched with the gear 18, and when the drilling positioning ring 10 adjusts the angle, the gear 18 is driven to rotate and displace on the rack 17, so that the whole adjusting rod 16 moves back and forth relative to the fixed rod 15. For example, when the drill positioning ring 10 is rotated downward, the adjusting lever 16 is moved outward relative to the fixed lever 15; when the drilling locating ring 10 is rotated upwards, the adjusting rod 16 moves inwards relative to the locating rod 15, and the central axis of the drilling locating ring 10 always points to the position of the hook 5. In practical application, because the heights of the drilling positioning parts 8 relative to the hooks 5 are different in the operations of different people, when the drilling positioning ring 10 rotates, the central axis may not always point to a certain fixed point of the hooks 5, the situation that the hook 5 is separated may occur under extreme conditions, but the structure provided by the invention still obviously increases the operable range of the drilling angle on the premise of ensuring that the size of the hook 5 is unchanged. As shown in fig. 5, in a variation, the device further comprises a transmission rod 19, a fixed nut 20 is arranged on the fixed rod 15, a worm wheel 21 is arranged on the drilling positioning ring 10, a screw rod and a worm are respectively formed at two ends of the transmission rod 19 along the axial direction, the fixed nut 20 is matched with the screw rod, the worm wheel 21 is matched with the worm, in addition, a bearing 22 is arranged on the adjusting rod 16, the transmission rod 19 is arranged in the bearing 22 in a penetrating way, the axial fixation between the transmission rod 19 and the adjusting rod 16 is ensured, and meanwhile, the supporting effect on the transmission rod 19 is achieved. When the drilling positioning ring 10 rotates, the worm wheel 21 is driven to rotate, the transmission rod 19 is driven to rotate, and a screw transmission structure is formed between the left end of the transmission rod 19 and the fixed nut 20, so that the adjusting rod 16 is driven to move in the axial direction. Preferably, the fixed rod 15 is provided with a switch screw 23, the switch screw 23 can be contacted with or separated from the adjusting rod 16 along the axial movement, the axial fixing capability between the fixed rod 15 and the adjusting rod 16 is further improved through the arrangement of the switch screw 23, the unstable condition of the drilling locating rod 9 during drilling is prevented, and the safety of the operation is ensured.
Preferred embodiments: making a small incision of 2-3 cm along the outer edge of the collarbone, and performing blunt separation along the collarbone until the coracoid process; releasing the locking structure 6 of the coracoid ligament reconstruction locator, and slowly penetrating the rod 1 in the locator along the incision until the hook 5 is penetrated to the coracoid process upper edge; adjusting the angle of the inner rod 1 to enable the hook 5 to bypass the coracoid process and hook the lower edge of the coracoid process; pushing the push-pull button 25 to locate the drilled locating hole on the outer rod 2 in the collarbone; resetting the dislocated collarbone, and tightly attaching the drilling positioning ring 10 to the reset collarbone to lock the locking structure 6 of the outer rod 2; a 4.5mm pilot drill is drilled through the collarbone and coracoid process through the central hole of the drill locating ring 10 until reaching the hook 5; loosening the hollow drill, penetrating the head end of the nickel titanium wire ring 26 from the hollow drill, bending the hollow drill at the position of the hook 5 into the axial opening of the inner rod 1, and penetrating the hollow drill out of the tail of the outer rod 2; the core drill is removed and the nickel titanium wire ring 26 is left over the collarbone to facilitate pulling of the ligament reconstruction material.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (7)
1. The coracoid ligament reconstruction positioning device is characterized by comprising an inner rod (1) and an outer rod (2), wherein the outer rod (2) and the inner rod (1) can slide relatively in the axial direction;
the inner rod (1) comprises a guide part (3), a reset part (4) and a hook (5), wherein the guide part (3), the reset part (4) and the hook (5) are sequentially arranged in the length extension direction of the inner rod (1); the guide part (3) and the reset part (4) form an included angle in the length extending direction, and the guide part (3) is nested in the axial hole of the outer rod (2);
the guide part (3) and the reset part (4) are integrally formed, and the reset part (4) and the hook (5) are integrally formed or fastened;
the outer rod (2) is provided with a locking structure (6), and the locking structure (6) can limit the axial relative sliding between the outer rod (2) and the inner rod (1);
the outer rod (2) comprises a hand-held part (7) and a drilling positioning part (8), and the hand-held part (7) and the drilling positioning part (8) are integrally formed or are fixedly connected;
the drilling positioning part (8) comprises a drilling positioning rod (9) and a drilling positioning ring (10), and the drilling positioning ring (10) is positioned at one end of the drilling positioning rod (9) along the axial direction;
the drilling positioning rod (9) comprises a fixed rod (15) and an adjusting rod (16), the fixed rod (15) is in sliding connection with the adjusting rod (16), and the drilling positioning ring (10) is hinged on the adjusting rod (16);
the drilling and positioning device further comprises a transmission rod (19), a fixed nut (20) is arranged on the fixed rod (15), a worm wheel (21) is arranged on the drilling and positioning ring (10), a screw rod and a worm are respectively formed at two axial ends of the transmission rod (19), the fixed nut (20) is matched with the screw rod, and the worm wheel (21) is matched with the worm;
the adjusting rod (16) is provided with a bearing (22), and the transmission rod (19) is arranged in the bearing (22) in a penetrating way, so that the axial fixation between the transmission rod (19) and the adjusting rod (16) is ensured;
the outer rod (2) is also provided with a rolling wheel (24) and a push-pull button (25);
when the coracoid ligament is reconstructed and positioned, a notch is formed along the outer edge of the collarbone, and the notch is passively separated along the collarbone until the coracoid ligament is formed; releasing the locking structure (6) of the coracoid ligament reconstruction locator, and penetrating the rod (1) in the locator along the incision until the hook (5) is penetrated to the coracoid process upper edge; adjusting the angle of the inner rod (1) to enable the hook (5) to bypass the coracoid process and hook the lower edge of the coracoid process; pushing the push-pull button (25) to position the drilling positioning hole on the outer rod (2) on the collarbone; resetting the dislocated collarbone, and tightly attaching a drilling positioning ring (10) to the reset collarbone to lock a locking structure (6) of the outer rod (2); drilling a central hole of the positioning ring (10), and drilling the hollow drill through the collarbone and coracoid process until reaching the hook (5); loosening the hollow drill, penetrating the head end of the nickel titanium wire ring (26) from the hollow drill, bending the hollow drill at the position of the hook (5) into an axial opening of the inner rod (1), and penetrating out from the tail of the outer rod (2); and the hollow drill is taken out, and the nickel titanium wire ring (26) is remained above the collarbone, so that ligament reconstruction materials can be pulled conveniently.
2. Coracoid ligament reconstruction positioning device according to claim 1, characterized in that the locking structure (6) is located on the hand-held portion (7), the locking structure (6) comprising a contact portion (11); the locking structure (6) can be switched between a locking state and a releasing state by rotating along the circumferential direction:
in the locking state, the contact part (11) and the guide part (3) are contacted with each other;
in the released state, the contact part (11) and the guide part (3) are separated from each other.
3. The coracoid ligament reconstruction positioning device according to claim 2, characterized in that the outer peripheral surface of the guide portion (3) comprises a plurality of avoidance surfaces (12) and arc surfaces (13) which are sequentially connected;
the arc surface (13) is matched with the shape of the inner wall of the axial hole of the outer rod (2), and an avoidance space is formed between the avoidance surface (12) and the inner wall of the axial hole of the outer rod (2);
in the loosening state, the whole contact part (11) is positioned in the avoiding space; in the locked state, the contact portion (11) is in contact with the circular arc surface (13).
4. A coracoid ligament reconstruction positioning device according to claim 3, characterized in that a plurality of arc-shaped grooves which are uniformly distributed along the axial direction are arranged on the arc-shaped surface (13), and arc-shaped raised strips which are matched with the arc-shaped grooves are arranged on the contact part (11); or,
the arc surface (13) and the contact part (11) are respectively provided with matched external threads and internal threads.
5. Coracoid ligament reconstruction positioning device according to claim 1, characterized in that the outer rod (2) and the guide (3) are relatively fixed in the circumferential direction;
the inner wall of the axial hole of the outer rod (2) is provided with a limited rotation convex strip (14), and the guide part (3) is provided with a limited rotation groove.
6. Coracoid ligament reconstruction positioning device according to claim 1, characterized in that the central axis of the drill positioning ring (10) intersects the hook (5);
the drilling locating ring (10) is hinged with the drilling locating rod (9).
7. Coracoid ligament reconstruction positioning device according to claim 1, characterized in that the fixation rod (15) is provided with a switch screw (23), the switch screw (23) being axially movable in contact with or separable from the adjustment rod (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810065201.8A CN108309508B (en) | 2018-01-23 | 2018-01-23 | Coracoid ligament rebuilding and positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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