CN116650057A - Locator for establishing bone tunnel on scapular glenoid - Google Patents
Locator for establishing bone tunnel on scapular glenoid Download PDFInfo
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- CN116650057A CN116650057A CN202310637285.9A CN202310637285A CN116650057A CN 116650057 A CN116650057 A CN 116650057A CN 202310637285 A CN202310637285 A CN 202310637285A CN 116650057 A CN116650057 A CN 116650057A
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- drill
- locator
- cantilever hook
- bone
- drill sleeve
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 85
- 241001653121 Glenoides Species 0.000 title claims abstract description 44
- 230000009471 action Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 8
- 210000004197 pelvis Anatomy 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- 210000001991 scapula Anatomy 0.000 claims 1
- 238000004080 punching Methods 0.000 abstract description 3
- 206010023204 Joint dislocation Diseases 0.000 description 5
- 238000005553 drilling Methods 0.000 description 5
- 208000008877 Shoulder Dislocation Diseases 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 208000002847 Surgical Wound Diseases 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000002224 dissection Methods 0.000 description 2
- 210000004095 humeral head Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000306 recurrent effect Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 206010065687 Bone loss Diseases 0.000 description 1
- 206010007710 Cartilage injury Diseases 0.000 description 1
- 208000005137 Joint instability Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000000642 iatrogenic effect Effects 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—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
- A61B17/171—Guides or aligning means for drills, mills, pins or wires for external fixation
-
- 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
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1684—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the shoulder
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The application discloses a locator for establishing a bone tunnel on a scapular glenoid, which comprises the following components: the device comprises a locator body, a drill sleeve which is slidably and adjustably arranged on the locator body, a cantilever hook which is used for reversely hooking the edge of the scapular glenoid for positioning, and a position adjusting component which is adjustably arranged on the top of the locator body. The drill sleeve is internally provided with a bone drill channel and is used for sliding under the action of external force so as to prop against the position on the scapular spittoon where the bone tunnel is to be established and then be locked. The cantilever hook is connected to the position adjusting member, and the position adjusting member is used for rotating under the action of external force so as to drive the cantilever hook to translate towards the direction close to or far away from the drill sleeve, or unlock the cantilever hook so as to redefine the distance between the cantilever hook and the drill sleeve, and further adjust the vertical distance between the cantilever hook and the drill sleeve. The locator provided by the application is stable and does not shift in the bone drill punching process, so that the accuracy of bone tunnel establishment is greatly improved, and meanwhile, the locator provided by the application is strong in adaptability, very simple in adjustment operation and convenient to perform rapid operation in operation.
Description
Technical Field
The application relates to the technical field of medical instruments, in particular to a locator for establishing a bone tunnel on a scapular glenoid.
Background
Shoulder dislocation is the most common type of joint instability in clinic, accounting for over 50% of all joint dislocation, and shoulder dislocation is mainly preceded by dislocation, accounting for about 90%. Anterior shoulder dislocation usually results in anterior inferior glenoid labial injury (Bankart injury) and posterior superior humeral skull cartilage injury (Hill-Sachs injury). For recurrent anterior shoulder dislocation, a degree of bone loss of the anterior inferior glenoid or posterior superior humeral head is typically caused, and bone defects of the glenoid or humeral head are further exacerbated as the number/frequency of dislocation increases.
The reconstruction operation of shoulder glenoid dissection, such as autologous ilium transplanting operation, is widely accepted as an effective method for treating recurrent pre-shoulder instability with obvious bone defects, but the current clinical lack of an auxiliary positioning device for establishing a shoulder glenoid bone tunnel in the reconstruction process of shoulder glenoid dissection often depends on the clinical experience of doctors, the operation is easy to be positioned inaccurately, the operation time is greatly increased, meanwhile, the operation difficulty and risk are increased, and the success rate and the treatment effect of the operation are affected.
Disclosure of Invention
The application provides a locator for establishing a bone tunnel on a scapular glenoid, which aims to solve the technical problems that in the prior art, because the establishment of the bone tunnel depends on the clinical experience of doctors, the operation is easy to be positioned inaccurately, the operation time is greatly prolonged, meanwhile, the operation difficulty and risk are increased, and the success rate and the treatment effect of the operation are affected.
The technical scheme adopted by the application is as follows:
a locator for supraglenoid tunnel creation, comprising: the device comprises a positioner body which is held by an operator and plays a role of installation and support, a drill sleeve which is slidably and adjustably arranged on the positioner body, a cantilever hook which is used for reversely hooking the edge of a scapular spittoon for positioning, and a position adjusting component which is adjustably arranged on the top of the positioner body; the drill sleeve is internally provided with a bone drill channel which extends along the sliding direction and is communicated with the two ends of the drill sleeve, and the drill sleeve is used for sliding under the action of external force so as to prop against the position on the scapular spittoon where the bone tunnel is to be established and then lock; the cantilever hook is connected to the position adjusting member, and the position adjusting member is used for rotating under the action of external force so as to drive the cantilever hook to translate towards the direction close to or far away from the drill sleeve, or unlock the cantilever hook so as to redefine the distance between the cantilever hook and the drill sleeve, and further adjust the vertical distance between the cantilever hook and the drill sleeve.
Further, the position adjusting member comprises a first threaded column vertically fixed at the top of the positioner body and an adjusting knob in threaded connection with the outer circle of the first threaded column; the bottom of the cantilever hook connecting end is provided with an inward concave mounting notch for the first threaded column to penetrate, the inner side wall surface of the mounting notch is provided with an inward concave mounting annular groove for accommodating the adjusting knob, and the mounting notch is also communicated with the outer side wall of the cantilever hook connecting end so that the adjusting knob accommodated in the mounting annular groove is exposed; the cantilever hook is connected to the position adjusting member through the fit of the mounting notch and the first threaded column, and the adjusting knob is limited in the mounting ring groove.
Further, the position adjusting member comprises a second threaded column vertically fixed at the top of the positioner body, a locking nut in threaded connection with the outer circle of the second threaded column and a plurality of clamping blocks; the connecting end of the cantilever hook is arranged on the second threaded column in a sliding way, and the second lock nut is positioned above the cantilever hook; the fixture block is used for being clamped between the cantilever hook and the top surface of the locator body, the lock nut is used for pressing the connecting end of the cantilever hook in the rotating process, and then the cantilever hook presses the fixture block on the top of the locator body.
Further, the locator body comprises at least one guide limit column extending vertically upwards from the top of the locator body; the connecting end of the cantilever hook is further arranged on the guiding limit column in a sliding penetrating mode, so that the sliding of the cantilever hook is limited and guided through the guiding limit column.
Further, the cantilever hook is arranged in parallel with the drill bushing and translates along the direction perpendicular to the drill bushing under the action of the position adjusting component; the cantilever end of the cantilever hook is inwards bent towards the direction of the drill sleeve to form a hook part, and the end surface of the hook part is provided with a first convex tooth for increasing friction with the scapular pelvis.
Further, a drill bushing channel for the drill bushing to pass through is also arranged on the locator body, and the drill bushing is slidably arranged in the drill bushing channel; the locator for establishing the scapular supraglenoid bone tunnel further comprises a locking member for locking the drill sleeve, wherein the locking member is arranged on the locator body and is connected with the drill sleeve.
Further, the locking component comprises a mounting support fixed on the locator body, a pawl hinged on the mounting support through a hinge shaft, a disc spring arranged on the hinge shaft and limited between the locator body and the pawl, and a ratchet bar matched with the pawl; the ratchet bar is arranged on the lower surface of the drill sleeve along the sliding direction of the drill sleeve; the pawl is inserted between two adjacent ratchets on the ratchet bar after passing through the wall surface of the drill sleeve channel; the disc spring is used for enabling the pawl to be stably inserted between two adjacent ratchets on the ratchet strip.
Further, the locking member further includes a limiting protrusion disposed on the positioner body, the limiting protrusion being located at an inner side of the pawl for preventing the pawl from rotating in a reverse direction away from the positioner body.
Further, the number of the bone drill channels is multiple, and the bone drill channels are sequentially arranged at intervals in parallel; the head of the drill bushing is also provided with a limit flange for preventing the head of the drill bushing from entering the drill bushing channel.
Further, the locator for establishing the bone tunnel on the scapular glenoid comprises a bone drill guide rod which is axially fixed in the bone drill channel, wherein the bone drill guide rod is internally provided with a channel which axially extends for the bone drill to pass through for axially extending the drill sleeve; the end of the bone drill guide rod is provided with a second external convex tooth for increasing friction with the scapular pelvis.
The application has the following beneficial effects:
when the locator for establishing the bone tunnel on the scapular glenoid is operated in operation, the drill bushing is propped against the position of the bone tunnel to be established on the scapular glenoid after sliding and is self-locked for positioning, and then the edge of the scapular glenoid is reversely hooked by the action of the cantilever hook, so that the stable positioning of the drill bushing is realized, when the bone drill passes through the bone drill channel, the position of the bone tunnel to be established on the scapular glenoid can be accurately punched, and the whole locator device is stable and does not shift in the punching process of the bone drill through the reverse hooking action of the cantilever hook on the edge of the scapular glenoid, so that the accuracy of establishing the bone tunnel is greatly improved, meanwhile, the operation time is greatly reduced, the difficulty and risk of operation are also reduced, and the success rate and treatment effect of the operation are improved; on the other hand, as the distance between the position of the bone tunnel to be established on the patient's scapular pelvis and the edge of the scapular pelvis is different, in order to improve the adaptability of the positioner device, a position adjusting member is additionally arranged, and when in adjusting operation, the cantilever hook can be driven to translate towards the direction close to or far away from the drill sleeve only by rotating the position adjusting member, thereby adjusting the vertical distance between the cantilever hook and the drill sleeve, or unlocking the cantilever hook to redefine the distance between the cantilever hook and the drill sleeve, thereby adjusting the vertical distance between the cantilever hook and the drill sleeve, finally, the cantilever hook can hook the edge of the scapular pelvis at any position, the adaptability of the positioner device is improved, the adjusting operation is very simple, and the rapid operation is convenient in operation.
In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
fig. 1 is a schematic view showing the spatial configuration of a first embodiment of a locator for establishing a bone tunnel on a glenoid scapular according to a preferred embodiment of the present application;
FIG. 2 is a schematic cross-sectional elevation view of the structure of FIG. 1;
fig. 3 is a second schematic view of the space structure of the supraglenoid tunnel-establishing locator of fig. 1;
fig. 4 is a schematic space structure of a second embodiment of a locator for supraglenoid tunnel creation of the preferred embodiment of the present application.
Description of the drawings
10. A locator body; 101. a drill bushing channel; 11. a guide limit column; 12. a grip portion; 20. a drill sleeve; 201. bone drill channels; 21. a limit flange; 30. a cantilever hook; 40. a position adjustment member; 41. a first threaded post; 42. an adjustment knob; 43. a second threaded post; 44. a lock nut; 45. a clamping block; 50. a locking member; 51. a mounting support; 52. a hinge shaft; 53. a pawl; 54. a ratchet strip; 60. bone drill guide rod.
Detailed Description
Embodiments of the application are described in detail below with reference to the attached drawing figures, but the application can be practiced in a number of different ways, as defined and covered below.
Referring to fig. 1 and 4, a preferred embodiment of the present application provides a locator for supraglenoid tunnel creation, comprising: the device comprises a positioner body 10 which is held by an operator and plays a role of installation and support, a drill sleeve 20 which is slidably and adjustably arranged on the positioner body 10, a cantilever hook 30 for reversely hooking the edge of a scapular spit for positioning, and a position adjusting member 40 which is adjustably arranged on the top of the positioner body 10. The drill sleeve 20 is internally provided with a bone drill channel 201 which extends along the sliding direction and is communicated with the two ends of the drill sleeve, and the drill sleeve 20 is used for sliding under the action of external force so as to be propped against the position on the scapular spittoon where the bone tunnel is to be established and then locked. The cantilever hook 30 is connected to the position adjusting member 40, and the position adjusting member 40 is used for rotating under the action of an external force, so as to drive the cantilever hook 30 to translate towards a direction approaching or away from the drill sleeve 20, or unlock the cantilever hook 30 to redefine the distance between the cantilever hook 30 and the drill sleeve 20, so as to adjust the vertical distance between the cantilever hook 30 and the drill sleeve 20.
When the locator for bone tunnel establishment on a glenoid space of the present application is used in an intraoperative operation, first, the position adjusting member 40 is adjusted according to the interval between the position on the glenoid space where the bone tunnel is to be established and the edge of the glenoid space, so that the vertical distance between the cantilever hook 30 and the drill sleeve 20 satisfies the interval; after the surgical incision is made, the operator holds the locator body 10, and introduces the locator from the surgical incision to hook the anterior edge of the glenoid with the cantilevered end of the cantilevered hook 30; then pushing the drill sleeve 20 to move towards the direction of the scapular spittoon until the front end of the drill sleeve 20 abuts against the position on the scapular spittoon where the bone tunnel is to be established and locks the drill sleeve 20; inserting a bone drill into the bone drill channel 201 from the other end of the drill sleeve 20, and drilling a bone tunnel on the scapular glenoid by using the bone drill at a position where the bone tunnel is to be established; after the drilling is finished, the bone drill is pulled out reversely, and after the drill sleeve 20 is unlocked, the drill sleeve 20 is pulled back reversely to realize the withdrawal operation of the drill sleeve 20.
When the locator for establishing the bone tunnel on the scapular glenoid is operated in operation, the drill sleeve 20 is propped against the position of the bone tunnel to be established on the scapular glenoid after sliding and is self-locked for positioning, and then the cantilever hook 30 is matched for acting against the edge of the opposite hooking shoulder glenoid, so that the stable positioning of the drill sleeve 20 is realized, when a bone drill passes through the bone drill channel 201, the position of the bone tunnel to be established on the shoulder glenoid can be accurately punched, and the opposite hooking action of the cantilever hook 30 on the edge of the shoulder glenoid is adopted, so that the whole locator device is stable and does not shift in the bone drill punching process, the accuracy of establishing the bone tunnel is greatly improved, meanwhile, the operation time is greatly reduced due to the simple positioning and fixing operation, the operation difficulty and risk are also reduced, and the operation success rate and treatment effect are improved; on the other hand, because the distance between the position of the bone tunnel to be established on the patient's scapular pelvis and the edge of the scapular pelvis is different, in order to improve the adaptability of the positioner device of the present application, the position adjusting member 40 is further added, and when the positioner device is adjusted, the cantilever hook 30 is driven to translate towards the direction approaching or separating from the drill sleeve 20 only by rotating the position adjusting member 40, so as to adjust the vertical distance between the cantilever hook 30 and the drill sleeve 20, or unlock the cantilever hook 30 to redefine the distance between the cantilever hook 30 and the drill sleeve 20, so as to adjust the vertical distance between the cantilever hook 30 and the drill sleeve 20, and finally, the cantilever hook 30 can hook the edge of the scapular pelvis at any position, thereby improving the adaptability of the positioner device of the present application, and the adjustment operation is very simple, so that the rapid operation is convenient in operation.
Alternatively, as shown in fig. 1 and 2, the position adjusting member 40 includes a first screw column 41 vertically fixed to the top of the positioner body 10, and an adjusting knob 42 screw-coupled to the outer circumference of the first screw column 41. The bottom of cantilever hook 30 link is equipped with the indent and supplies the installation notch that first screw thread post 41 worn to establish, is equipped with the indent on the inside wall surface of installation notch in order to be used for holding adjusting knob 42, and the installation notch still communicates the lateral wall of cantilever hook 30 link to make the adjusting knob 42 that holds in the installation annular expose. The cantilever hook 30 is connected to the position adjusting member 40 by the fit of the mounting recess and the first threaded post 41, and the adjusting knob 42 is retained in the mounting groove. During the adjustment operation, only the exposed adjusting knob 42 is required to be screwed, and when the adjusting knob 42 rotates, the cantilever hook 30 can be driven to lift in the height direction of the first threaded column 41 through the limit fit of the adjusting knob 42 and the mounting ring groove, so that the distance between the cantilever hook 30 and the drill bushing 20 is adjusted; the position adjusting member 40 of the present application is simple in structural arrangement, simple in adjusting operation, and convenient for rapid operation in surgery.
Alternatively, as shown in fig. 4, the position adjusting member 40 includes a second screw post 43 vertically fixed to the top of the positioner body 10, a lock nut 44 screwed on the outer circle of the second screw post 43, and a plurality of blocks 45. The connecting end of the cantilever hook 30 is slidably disposed on the second threaded post 43, and the second lock nut 44 is located above the cantilever hook 30. The clamping block 45 is used for being clamped between the cantilever hook 30 and the top surface of the positioner body 10, and the locking nut 44 is used for pressing the connecting end of the cantilever hook 30 in the rotating process, so that the cantilever hook 30 presses the clamping block 45 on the top of the positioner body 10. During the adjustment operation, the lock nut 44 is firstly unscrewed, then a plurality of clamping blocks 45 are inserted between the cantilever hook 30 and the upper top surface of the positioner body 10 according to the requirement, and finally the lock nut 44 is screwed, so that the interval between the cantilever hook 30 and the drill sleeve 20 is adjusted; the position adjusting member 40 of the present application is simple in structural arrangement, simple in adjusting operation, and convenient for rapid operation in surgery.
Alternatively, as shown in fig. 2 and 4, the positioner body 10 includes at least one guide and stopper post 11 extending vertically upward from the top thereof. The connecting end of the cantilever hook 30 is further arranged on the guiding limit column 11 in a sliding and penetrating manner, so that the sliding of the cantilever hook 30 is limited and guided through the guiding limit column 11. In this alternative, as shown in fig. 2 and fig. 4, the number of the guiding and limiting columns 11 is two, and the two guiding and limiting columns 11 are respectively arranged on the front side and the rear side of the position adjusting member 40, so that the sliding of the cantilever hook 30 can be guided through the cooperation of the two guiding and limiting columns with the cantilever hook 30, and the sliding precision of the cantilever hook 30 is further increased. Preferably, as shown in fig. 3, one of the guiding and limiting columns 11 is provided with scale marks extending along the height direction, and the vertical distance value between the cantilever hook 30 and the drill bushing 20 can be easily obtained through the scales expressed by the scale marks.
In this alternative, as shown in fig. 2, the cantilever hook 30 is arranged parallel to the drill sleeve 20 and translates in the direction perpendicular to the drill sleeve 20 under the action of the position adjusting member 40; since the cantilever hook 30 is disposed in parallel with the drill bushing 20, the operation can be performed without opening a large surgical incision during the surgical operation. The cantilevered end of the cantilevered hook 30 is bent inwardly in a direction toward the drill sleeve 20 to form a hook portion, the end face of which is provided with first male teeth for increasing friction with the glenoid to more stably catch the rim of the glenoid.
Optionally, as shown in fig. 3, the positioner body 10 is further provided with a drill bushing channel 101 through which the drill bushing 20 is installed, and the drill bushing 20 is slidably installed in the drill bushing channel 101. The locator for scapular supraglenoid bone tunnel establishment further includes a locking member 50 for locking the drill sleeve 20, the locking member 50 being provided on the locator body 10 and being connected to the drill sleeve 20.
In this alternative, as shown in fig. 3, the locking member 50 includes a mounting bracket 51 fixed to the positioner body 10, a pawl 53 hinged to the mounting bracket 51 through a hinge shaft 52, a disc spring mounted to the hinge shaft 52 and restrained between the positioner body 10 and the pawl 53, and a ratchet bar 54 cooperating with the pawl 53. The ratchet bar 54 is provided on the lower surface of the drill bushing 20 in the sliding direction of the drill bushing 20. The pawl 53 is inserted between two adjacent ratchet teeth on the ratchet bar 54 after passing through the wall of the drill bushing channel 101. The disc spring is used to stably insert the pawl 53 between two adjacent ratchet teeth on the ratchet bar 54. As shown in fig. 2, the pawl 53 is stably inserted between two adjacent ratchet teeth on the ratchet bar 54 under the action of the disc spring, thereby stably locking the drill bushing 20; when the drill bushing 20 is required to be moved, the force-applying pawl 53 rotates in a counterclockwise direction near the positioner body 10 with the hinge shaft 52 as a rotation center, the pawl 53 is disconnected from the ratchet bar 54, and then the drill bushing 20 is required to be moved by applying force. In the alternative, the locking member 50 is simple in structural arrangement, and the locking and unlocking operations of the drill bushing 20 are simple; in the conventional structure arrangement of the existing ratchet and pawl, the ratchet which is matched with the pawl is in a round wheel shape, the ratchet is arranged on the outer peripheral surface of the ratchet, and when the ratchet is arranged along the circumferential direction of the drill sleeve to form the ratchet in the actual operation process, the drill sleeve is easily driven to rotate by the drill sleeve due to factors such as the dimensional precision of the drill bit/the drill sleeve, tissue fragments and the like in the drill sleeve, so that the ratchet and the pawl are loosened, the operation is interfered, and even extra iatrogenic damage is caused.
Preferably, not shown in the drawings, the locking member 50 further includes a limiting protrusion disposed on the positioner body 10, where the limiting protrusion is located on the inner side of the pawl 53, so as to prevent the pawl 53 from rotating in a direction opposite to the positioner body 10, further prevent the ratchet teeth and the pawl 53 from automatically disengaging during drilling, improve stability of the pawl 53 engaged with the ratchet bar 54, and after drilling is completed, buckle the pawl 53, so that the ratchet teeth and the pawl 53 disengage, thereby realizing the withdrawal operation of the drill bushing 20.
Alternatively, as shown in fig. 4, the number of bone drill channels 201 is plural, and the plural bone drill channels 201 are sequentially arranged in parallel at intervals. Compared with the arrangement mode that each drill bushing is provided with one bone drill channel, the arrangement mode that a plurality of bone drill channels are matched with a plurality of drill bushings is characterized in that due to unavoidable fit gaps and machining errors, the intervals and parallelism among a plurality of independent drill bushings fluctuate within a certain range, and therefore drilling accuracy is affected; in the present application, only one drill bushing 20 is provided, and a plurality of bone drill channels 201 are simultaneously provided in the drill bushing 20, so as to effectively solve the above technical problems in the arrangement mode of a plurality of bone drill channels and a plurality of drill bushings. The head of the drill bushing 20 is also provided with a stop flange 21 for preventing its head from entering the bushing channel 101. Preferably, the positioner body 10 further includes a grip portion 12 for convenient grasping by a physician.
Optionally, as shown in fig. 4, the locator for bone tunnel establishment on the glenoid includes a bone drill guide rod 60 axially fixed in the bone drill channel 201, the bone drill guide rod 60 having a channel therein extending axially for bone drill penetration for axially extending the drill sleeve 20. The end of the bone drill guide rod 60 is provided with a second external tooth for increasing friction with the glenoid so as to more stably bear against the glenoid.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A locator for use in setting up a bone tunnel on a glenoid scapula, comprising:
the device comprises a positioner body (10) which is held by an operator and plays a role of installation and support, a drill sleeve (20) which is slidably and adjustably arranged on the positioner body (10), a cantilever hook (30) which is used for reversely hooking the edge of a shoulder blade spit for positioning, and a position adjusting component (40) which is adjustably arranged at the top of the positioner body (10);
a bone drill channel (201) extending along the sliding direction and communicated with the two ends of the drill sleeve is arranged in the drill sleeve (20), and the drill sleeve (20) is used for sliding under the action of external force so as to prop against the position on the scapular pelvis where a bone tunnel is to be established and then lock;
the cantilever hook (30) is connected to the position adjusting member (40), the position adjusting member (40) is used for rotating under the action of external force, and then the cantilever hook (30) is driven to translate towards a direction close to or far away from the drill sleeve (20), or the cantilever hook (30) is unlocked to redefine the distance between the cantilever hook (30) and the drill sleeve (20), and then the vertical distance between the cantilever hook (30) and the drill sleeve (20) is adjusted.
2. The locator for bone tunnel establishment on scapular glenoid according to claim 1,
the position adjusting member (40) includes a first threaded post (41) vertically fixed to the top of the positioner body (10), and
an adjusting knob (42) screwed on the outer circle of the first threaded column (41);
the bottom of the connecting end of the cantilever hook (30) is provided with an inward concave mounting notch for the first threaded column (41) to penetrate, the inner side wall surface of the mounting notch is provided with an inward concave mounting annular groove for accommodating the adjusting knob (42), and the mounting notch is also communicated with the outer side wall of the connecting end of the cantilever hook (30) so that the adjusting knob (42) accommodated in the mounting annular groove is exposed;
the cantilever hook (30) is connected to the position adjusting member (40) through the fit of the mounting notch and the first threaded column (41), and the adjusting knob (42) is limited in the mounting annular groove.
3. The locator for bone tunnel establishment on scapular glenoid according to claim 1,
the position adjusting component (40) comprises a second threaded column (43) vertically fixed at the top of the positioner body (10), a locking nut (44) connected with the outer circle of the second threaded column (43) in a threaded manner, and a plurality of clamping blocks (45);
the connecting end of the cantilever hook (30) is arranged on the second threaded column (43) in a sliding way, and the second locking nut (44) is positioned above the cantilever hook (30);
the fixture block (45) is used for being clamped between the cantilever hook (30) and the top surface of the locator body (10), the locking nut (44) is used for pressing the connecting end of the cantilever hook (30) in the rotating process, and then the cantilever hook (30) presses the fixture block (45) on the top of the locator body (10).
4. The locator for bone tunnel establishment on scapular glenoid according to any one of claim 2 or 3,
the locator body (10) comprises at least one guide limit column (11) extending vertically upwards from the top of the locator body;
the connecting end of the cantilever hook (30) is further arranged on the guiding limit column (11) in a sliding and penetrating mode, and the sliding of the cantilever hook (30) is limited and guided through the guiding limit column (11).
5. The locator for bone tunnel establishment on scapular glenoid according to claim 1,
the cantilever hook (30) is arranged in parallel with the drill bushing (20) and translates along the direction of the vertical drill bushing (20) under the action of the position adjusting component (40);
the cantilever end of the cantilever hook (30) is inwards bent towards the direction of the drill sleeve (20) to form a hook part, and the end surface of the hook part is provided with a first outer convex tooth for increasing friction with the scapular pelvis.
6. The locator for bone tunnel establishment on scapular glenoid according to claim 1,
the drill sleeve (20) is slidably arranged in the drill sleeve channel (101);
the locator for establishing the bone tunnel on the scapular glenoid comprises a locking component (50) for locking the drill sleeve (20), and the locking component (50) is arranged on the locator body (10) and is connected with the drill sleeve (20).
7. The locator for setting up a supraglenoid tunnel of claim 6,
the locking component (50) comprises a mounting support (51) fixed on the positioner body (10), a pawl (53) hinged on the mounting support (51) through a hinge shaft (52), a disc spring arranged on the hinge shaft (52) and limited between the positioner body (10) and the pawl (53), and a ratchet strip (54) matched with the pawl (53);
the ratchet strip (54) is arranged on the lower surface of the drill sleeve (20) along the sliding direction of the drill sleeve (20);
the pawl (53) is inserted between two adjacent ratchets on the ratchet strip (54) after penetrating through the wall surface of the drill sleeve channel (101);
the disc spring is used for enabling the pawl (53) to be stably inserted between two adjacent ratchets on the ratchet strip (54).
8. The locator for setting up a supraglenoid tunnel of claim 7,
the locking member (50) further includes a limit projection provided on the positioner body (10), the limit projection being located inside the pawl (53) for preventing the pawl (53) from rotating in a reverse direction away from the positioner body (10).
9. The locator for setting up a supraglenoid tunnel of claim 6,
the number of the bone drill channels (201) is multiple, and the bone drill channels (201) are sequentially arranged at intervals in parallel;
the head of the drill bushing (20) is also provided with a limit flange (21) for preventing the head thereof from entering the bushing channel (101).
10. The locator for bone tunnel establishment on scapular glenoid according to claim 1,
the locator for establishing the bone tunnel on the scapular glenoid comprises a bone drill guide rod (60) which is axially fixed in the bone drill channel (201), wherein the bone drill guide rod (60) is internally provided with a channel which axially extends for the bone drill to penetrate through for axially extending the drill sleeve (20);
the end of the bone drill guide rod (60) is provided with a second external convex tooth for increasing friction with the shoulder glenoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310637285.9A CN116650057A (en) | 2023-05-31 | 2023-05-31 | Locator for establishing bone tunnel on scapular glenoid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310637285.9A CN116650057A (en) | 2023-05-31 | 2023-05-31 | Locator for establishing bone tunnel on scapular glenoid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116650057A true CN116650057A (en) | 2023-08-29 |
Family
ID=87714798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310637285.9A Pending CN116650057A (en) | 2023-05-31 | 2023-05-31 | Locator for establishing bone tunnel on scapular glenoid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116650057A (en) |
-
2023
- 2023-05-31 CN CN202310637285.9A patent/CN116650057A/en active Pending
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