CN114010294A - Bridging combination internal fixation system for bone lengthening - Google Patents
Bridging combination internal fixation system for bone lengthening Download PDFInfo
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- CN114010294A CN114010294A CN202111247980.1A CN202111247980A CN114010294A CN 114010294 A CN114010294 A CN 114010294A CN 202111247980 A CN202111247980 A CN 202111247980A CN 114010294 A CN114010294 A CN 114010294A
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- extension
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- screw
- internal fixation
- fixation system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8023—Variable length plates adjustable in both directions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/808—Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
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- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to the technical field of bone extension, and discloses a bridging combination internal fixation system for bone extension, which comprises a supporting and positioning mechanism and a hoop positioning mechanism, wherein the supporting and positioning mechanism is clamped with the hoop positioning mechanism through an extension support rod, in order to improve the convenient installation and use performance of the bridging combination internal fixation system for bone extension. The internal fixing system has flexible and convenient assembly performance through the combination of the supporting and positioning mechanism and the hoop positioning mechanism, can be convenient for medical personnel to assemble the internal fixing system on a patient framework, can improve the operation convenience of the medical personnel, can reduce the pain of the patient, and can adjust the supporting length of the internal fixing system through the clamping connection of the extending component in the hoop positioning mechanism and the extending supporting rod in the supporting and positioning machine in the use process, thereby improving the flexible usability of the internal fixing system.
Description
Technical Field
The invention relates to the technical field of bone lengthening, in particular to a bridging combined internal fixation system for bone lengthening.
Background
The bone lengthening is stretching and osteogenesis, namely, the bone is cut, soft tissues and blood supply are reserved, a specially-made traction device is adopted to fix two ends, the tension stress rule is applied to gradually apply tension to slowly draw a bone section, organism tissues are continuously stimulated, the regeneration potential of the human tissue is stimulated, new bone is formed in the osteotomy gap, and the purpose of bone regeneration is achieved, and the bone lengthening device is suitable for: patients with lower limb inequality accompanied by trauma, bone infection, congenital bone shortening, tumor and symptom group, patients with malformation and insufficiency of the proximal phosphate joint due to tumor and congenital reasons, unequal and unbalanced anterior wall and lower limb, patients with bone metabolic diseases due to congenital multiple chondrogenesis insufficiency, and bone lengthening operation modes are mainly divided into external fixation and fixation modes, wherein bridge correction in the internal fixation mode is widely applied.
But there are some shortcomings about the bridging combination internal fixation system of bone extension in the existing market, and the flexibility and fixation of the traditional internal fixation system are not enough in the process of fixing the bone of a patient, so that the operation convenience of medical personnel is limited, and in the use process, the traditional internal fixation system does not have the flexible and convenient extension function, so that the extension performance of the internal fixation system is limited. Accordingly, one skilled in the art provides a bridge combination internal fixation system for bone lengthening to solve the problems set forth in the background art described above.
Disclosure of Invention
The present invention is directed to a bridging combined internal fixation system for bone lengthening, which solves the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a bridge combination internal fixation system for bone extension, bone extension bridge combination internal fixation system comprises support positioning mechanism and cuff positioning mechanism, support positioning mechanism is through extending branch and cuff positioning mechanism block.
As a still further scheme of the invention: support positioning mechanism including supporting the grillage, rotatory draw-in groove has been seted up to the terminal surface symmetry of supporting the grillage, guiding hole has been seted up to the inner wall terminal surface symmetry of rotatory draw-in groove, and the inboard block of rotatory draw-in groove has the carousel, the rotary disk passes through bayonet lock and rotatory draw-in groove block, and the terminal surface of rotary disk is located border position department and has seted up positioning hole, positioning hole all runs through the block with guiding hole's inboard and has had fastening screw.
As a still further scheme of the invention: the number of the rotating disks is not less than three groups, and the spacing distances between the rotating disks are the same.
As a still further scheme of the invention: six groups are no less than the number of the guide through holes, and the guide through holes are annularly and symmetrically arranged relative to the circle center of the rotary clamping groove.
As a still further scheme of the invention: the size of guide through hole is the same with positioning hole, and guide through hole and positioning hole one-to-one each other, guide through hole and positioning hole's hole all is the same with fastening screw's rod footpath size.
As a still further scheme of the invention: the fastening screw comprises a screw body, a fastening nut is arranged at the top end of the screw body, and a bone drilling thread is arranged at the tail end of the screw body.
As a still further scheme of the invention: the hoop positioning mechanism comprises an extension assembly and a hoop screw rod, the extension assembly is clamped with the hoop screw rod hoop through a guide clamping seat, and the extension assembly is connected with an extension support rod in the support positioning mechanism through a push connecting rod.
As a still further scheme of the invention: the extension subassembly is including extending the frame, the bilateral symmetry that extends the frame is provided with the direction cassette, and extends a terminal surface and be located top middle part position department and be provided with the fastening thread cover, it closes fixedly to extend the frame through fastening thread cover and guide sleeve twist, the inboard that extends the frame is located top middle part position department and rotates and be connected with the transmission worm, and one side that the inboard that extends the frame is located the transmission worm rotates and is connected with the transmission lead screw, the output of transmission worm is fixed with the transmission positive hexagonal and drives the seat, the middle part of transmission lead screw is provided with the transmission worm wheel, and the outside symmetry of transmission lead screw has cup jointed the transmission silk cover, the bottom symmetric connection of transmission silk cover has the propelling movement connecting rod, and the transmission silk cover passes through the propelling movement connecting rod and extends branch and be connected.
As a still further scheme of the invention: the bottom end of the guide sleeve is provided with a fastening external thread matched with the fastening thread sleeve, a sealing plug is plugged at the port position of the guide sleeve, and the sealing plug is made of a silica gel material component.
As a still further scheme of the invention: the right hexagonal drive seat is located at a position right below the port of the fastening threaded sleeve.
As a still further scheme of the invention: the transmission screw rod takes a center line as a boundary, positive and negative screw teeth which are symmetrically arranged are respectively arranged on two sides of the center line, and the transmission screw rod is symmetrically sleeved with the transmission screw sleeve through the positive and negative screw teeth.
As a still further scheme of the invention: the hoop screw rod comprises a hoop, external threads are symmetrically arranged at the top end of the hoop, and the hoop is screwed with the fastening nut through the external threads.
Compared with the prior art, the invention has the beneficial effects that:
the internal fixing system has flexible and convenient assembly performance through the combination of the supporting and positioning mechanism and the hoop positioning mechanism, can be convenient for medical personnel to assemble the internal fixing system on a patient framework, can improve the operation convenience of the medical personnel, can reduce the pain of the patient, and can adjust the supporting length of the internal fixing system through the clamping connection of the extending component in the hoop positioning mechanism and the extending supporting rod in the supporting and positioning machine in the use process, thereby improving the flexible usability of the internal fixing system.
Drawings
FIG. 1 is a schematic diagram of a bridging-combined internal fixation system for bone lengthening;
FIG. 2 is a schematic view of a support positioning mechanism in a bridge assembly internal fixation system for bone lengthening;
FIG. 3 is an enlarged view of a bridge assembly internal fixation system for bone lengthening at A of FIG. 2;
FIG. 4 is a schematic view of a fastening screw of the bridging combined internal fixation system for bone lengthening;
FIG. 5 is a schematic diagram of a ferrule positioning mechanism in a bridge assembly internal fixation system for bone lengthening;
FIG. 6 is a schematic view of an extension assembly of a bridge assembly internal fixation system for bone lengthening;
FIG. 7 is a schematic view of a ferrule screw in a bridge assembly internal fixation system for bone lengthening.
In the figure: 1. a support plate frame; 2. rotating the disc; 3. fastening a screw rod; 31. a screw body; 32. fastening a nut; 33. drilling bone threads; 4. an extension assembly; 41. an extension frame; 42. a guide card seat; 43. fastening the threaded sleeve; 44. fastening the external thread; 45. a guide sleeve; 46. a sealing plug; 47. a transmission thread sleeve; 48. pushing the connecting rod; 49. a transmission screw rod; 410. a drive worm gear; 411. a right hexagonal driving seat; 412. a drive worm; 5. a hoop screw; 51. a ferrule; 52. an external thread; 53. fastening a nut; 6. an extension strut; 7. rotating the clamping groove; 8. a guide through hole; 9. a bayonet lock; 10. and positioning the through hole.
Detailed Description
Referring to fig. 1 to 7, in the embodiment of the present invention, a bridging combination internal fixation system for bone lengthening is composed of a supporting and positioning mechanism and a hoop positioning mechanism, the supporting and positioning mechanism includes a supporting plate frame 1, a rotary clamping groove 7 is symmetrically formed on an end surface of the supporting plate frame 1, a guiding through hole 8 is symmetrically formed on an inner wall end surface of the rotary clamping groove 7, a rotary table 2 is clamped on an inner side of the rotary clamping groove 7, the rotary table 2 is clamped with the rotary clamping groove 7 through a clamping pin 9, a positioning through hole 10 is formed at an edge position of the end surface of the rotary table 2, the number of the rotary tables 2 is not less than three, a spacing distance between the rotary tables 2 is the same, the number of the guiding through holes 8 is not less than six, the guiding through holes 8 are annularly and symmetrically arranged relative to a circle center of the rotary clamping groove 7, the sizes of the guiding through holes 8 and the positioning through holes 10 are the same, and the guiding through holes 8 correspond to the positioning through holes 10 one by one, the inner holes of the guiding through holes 8 and the positioning through holes 10 are the same as the rod diameter of the fastening screw rods 3, in the process of assembling and using the internal fixing system, medical personnel rotate the rotary disc 2 in sequence according to the position of the cut middle bone, the position of the positioning through holes 10 is adjusted, the fastening screw rods 3 can position the cut middle bone in different angle directions, then the medical personnel enable the positioning through holes 10 to correspond to one group of the guiding through holes 8, and after the correspondence is finished, the fastening screw rods 3 are inserted into the positioning through holes 10 and the guiding through holes 8 in a penetrating mode.
The fastening screw rod 3 is arranged on the inner sides of the positioning through hole 10 and the guide through hole 8 in a penetrating and clamping mode, the fastening screw rod 3 comprises a screw rod main body 31, a fastening screw cap 32 is arranged at the top end of the screw rod main body 31, the tail end of the screw rod main body 31 is provided with a bone drilling thread 33, in the process of positioning the cut-off middle bone, a worker uses a drilling tool to abut into the fastening screw cap 32, the bone drilling thread 33 at the top end of the screw rod main body 31 is drilled into the cut-off middle bone, the cut-off middle bone is positioned, and the cut-off middle bone and the support plate frame 1 are kept in an integrated connection mode.
The supporting and positioning mechanism is clamped with the hoop positioning mechanism through the extending support rod 6, the hoop positioning mechanism comprises an extending component 4 and a hoop screw rod 5, the extending component 4 is clamped with a hoop screw rod 5 through a guide clamping seat 42, the hoop screw rod 5 comprises a hoop 51, external threads 52 are symmetrically arranged at the top end position of the hoop 51, the hoop 51 is screwed with a fastening nut 53 through the external threads 52, in the process of assembling and using the internal fixing system, according to the positions of soft tissue and blood supply, medical personnel select the matched hoop screw rod 5, the matched hoop screw rod 5 is sheathed on the soft tissue and the blood supply, the hoop 51 on the hoop screw rod 5 synchronously penetrates through the guide clamping seat 42, the fastening nut 53 is screwed on the external threads 52 at the top end of the hoop 51, and the hoop screw rod 5 and the extending component 4 form an integrated structure and are fixed on the soft tissue and the blood supply.
The extension assembly 4 is connected with an extension support rod 6 in the supporting and positioning mechanism through a pushing connecting rod 48, the extension assembly 4 comprises an extension frame 41, guide clamping seats 42 are symmetrically arranged on two sides of the extension frame 41, a fastening thread sleeve 43 is arranged at the middle position of the top end of the extension frame 41, the extension frame 41 is screwed and fixed with a guide sleeve 45 through the fastening thread sleeve 43, a transmission worm 412 is rotatably connected at the middle position of the top end of the inner side of the extension frame 41, a transmission screw rod 49 is rotatably connected at one side of the transmission worm 412 at the inner side of the extension frame 41, a transmission right hexagonal driving seat 411 is fixed at the output end of the transmission worm 412, a fastening external thread 44 matched with the fastening thread sleeve 43 is arranged at the bottom end of the guide sleeve 45, a sealing plug 46 is plugged at the position of the port of the guide sleeve 45, the sealing plug 46 is made of silica gel, the right hexagonal driving seat 411 is arranged at the position under the port of the fastening thread sleeve 43, after the internal fixing system is assembled, the medical staff screws the guide sleeve 45 on the fastening threaded sleeve 43, the guide sleeve 45 is synchronously made to penetrate through the skin of a human body and extend to the outside, when the internal fixing system in the assembling and using process needs to be finely adjusted, the medical staff pulls out the sealing plug 46, the right hexagonal screwdriver is inserted into the guide sleeve 45 in a penetrating manner and supports into the right hexagonal driving seat 411, the screwdriver is further rotated to drive the right hexagonal driving seat 411 to rotate, the transmission worm 412 is synchronously driven to rotate, and the transmission screw 49 is driven to rotate through the matched combination of the transmission worm 412 and the transmission worm wheel 410.
The middle part of the transmission screw rod 49 is provided with a transmission worm gear 410, the outer side of the transmission screw rod 49 is symmetrically sleeved with transmission screw sleeves 47, the bottom end of each transmission screw sleeve 47 is symmetrically connected with a pushing connecting rod 48, the transmission screw sleeves 47 are connected with the extension supporting rods 6 through the pushing connecting rods 48, the transmission screw rod 49 takes a central line as a boundary, the two sides of the central line are respectively provided with positive and negative screw teeth which are symmetrically arranged with each other, the transmission screw rod 49 is symmetrically sleeved with the transmission screw sleeves 47 through the positive and negative screw teeth, the transmission screw rod 49 drives the transmission screw sleeves 47 to slide on the transmission screw rod 49 through the positive and negative screw teeth which are symmetrically arranged with each other in the rotating process, further the pushing connecting rods 48 are symmetrically rotated, the extension supporting rods 6 are pushed out of the extension assemblies 4, and the length of the internal fixing system is finely adjusted.
The working principle of the invention is as follows: during the assembly and use of the internal fixation system, according to the positions of soft tissue and blood supply, medical personnel selects a matched hoop screw rod 5, the matched hoop screw rod 5 is hooped on the soft tissue and the blood supply, a hoop 51 on the hoop screw rod 5 synchronously penetrates through a guide clamping seat 42, a fastening nut 53 is screwed on an external thread 52 at the top end of the hoop 51, so that the hoop screw rod 5 and an extension component 4 form an integrated structure and are fixed on the soft tissue and the blood supply, the medical personnel sequentially rotate a rotating disk 2 synchronously according to the position of cutting off middle sclerotin to adjust the position of a positioning through hole 10, so that the fastening screw rod 3 can position the cut-off middle sclerotin in different angle directions, the medical personnel enables the positioning through hole 10 to correspond to one group of the guide through holes 8, and inserts the fastening screw rod 3 into the positioning through hole 10 and the guide through hole 8 after the correspondence is finished, the worker uses a drilling tool to prop into the fastening nut 32, drills the bone drilling thread 33 at the top end of the screw rod main body 31 into the truncated middle bone, positions the truncated middle bone, so that the truncated middle bone and the supporting plate frame 1 keep an integrated connection form, further after the internal fixing system is assembled, the medical worker screws the guide sleeve 45 on the fastening threaded sleeve 43, synchronously enables the guide sleeve 45 to penetrate through the skin of the human body and extend to the outside, when the internal fixing system needs to be finely adjusted in the assembling and using process, the medical worker pulls out the sealing plug 46, inserts the regular hexagonal screwdriver into the guide sleeve 45 in a penetrating manner, props into the regular hexagonal driving seat 411, further rotates the screwdriver, drives the regular hexagonal driving seat 411 to rotate, synchronously drives the transmission worm 412 to rotate, and drives the transmission screw 49 to rotate through the matched combination of the transmission worm 412 and the transmission worm wheel 410, in the rotating process of the transmission screw rod 49, the transmission screw sleeve 47 is driven to slide on the transmission screw rod 49 through the positive and negative screw teeth which are symmetrically arranged with each other, so that the pushing connecting rod 48 is pushed to symmetrically rotate, the extension supporting rod 6 is pushed out from the extension assembly 4, and the length of the internal fixing system is finely adjusted.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (10)
1. A bridging combination internal fixation system for bone extension is characterized in that the bridging combination internal fixation system for bone extension is composed of a supporting and positioning mechanism and a hoop positioning mechanism, wherein the supporting and positioning mechanism is clamped with the hoop positioning mechanism through an extension support rod (6);
the supporting and positioning mechanism comprises a supporting plate frame (1), rotary clamping grooves (7) are symmetrically formed in the end face of the supporting plate frame (1), guide through holes (8) are symmetrically formed in the end face of the inner wall of each rotary clamping groove (7), a rotary disc (2) is clamped on the inner side of each rotary clamping groove (7), the rotary disc (2) is clamped with the rotary clamping grooves (7) through clamping pins (9), positioning through holes (10) are formed in the edge positions of the end face of the rotary disc (2), and fastening screws (3) penetrate through and are clamped between the positioning through holes (10) and the inner sides of the guide through holes (8);
the number of the rotating disks (2) is not less than three, and the spacing distances between the rotating disks (2) are the same.
2. A bridging combined internal fixation system for bone lengthening according to claim 1, characterized in that the number of guiding through holes (8) is no less than six groups, and the guiding through holes (8) are arranged in circular symmetry with respect to the center of the rotary slot (7).
3. A bridging combined internal fixation system for bone lengthening according to claim 1, characterized in that the guiding through holes (8) and the positioning through holes (10) are the same size, and the guiding through holes (8) and the positioning through holes (10) correspond to each other one by one, and the inner holes of the guiding through holes (8) and the positioning through holes (10) are the same size as the rod diameter of the fastening screw (3).
4. A bridging combined internal fixation system for bone lengthening according to claim 1, characterized in that the tightening screw (3) comprises a screw body (31), the top end of the screw body (31) is provided with a tightening nut (32) and the tail end of the screw body (31) is provided with a bone-drilling thread (33).
5. A bridging combined internal fixation system for bone lengthening according to claim 1, characterized in that the cuff positioning mechanism comprises an extension component (4) and a cuff screw (5), the extension component (4) is in cuff engagement with the cuff screw (5) through a guide clamp seat (42), and the extension component (4) is connected with an extension strut (6) in the support positioning mechanism through a push link (48).
6. The bridging combination internal fixation system for bone lengthening according to claim 5, wherein the extension assembly (4) comprises an extension frame (41), guide clamping seats (42) are symmetrically arranged on both sides of the extension frame (41), a fastening thread sleeve (43) is arranged at the position of the end face of the extension frame (41) located at the middle of the top end, the extension frame (41) is screwed and fixed with a guide sleeve (45) through the fastening thread sleeve (43), a transmission worm (412) is rotatably connected to the position of the inner side of the extension frame (41) located at the middle of the top end, a transmission screw rod (49) is rotatably connected to one side of the inner side of the extension frame (41) located at the transmission worm (412), a transmission hexagonal driving seat (411) is fixed to the output end of the transmission worm (412), and a transmission worm wheel (410) is arranged at the middle of the transmission screw rod (49), and the outside symmetry of transmission lead screw (49) has cup jointed transmission silk braid (47), the bottom symmetric connection of transmission silk braid (47) has propelling movement connecting rod (48), and transmission silk braid (47) are connected with extension branch (6) through propelling movement connecting rod (48).
7. The bridging combined internal fixation system for bone lengthening according to claim 6, wherein the bottom end of the guide sleeve (45) is provided with a fastening external thread (44) matched with the fastening threaded sleeve (43), and a sealing plug (46) is plugged at the port position of the guide sleeve (45), wherein the sealing plug (46) is made of a silicone material.
8. A bridging combined internal fixation system for bone lengthening according to claim 7, wherein the right hexagonal driver seat (411) is located at a position right below the port of the fastening screw sleeve (43).
9. The bridging combined internal fixation system for bone lengthening according to claim 7, wherein the drive screw (49) is bounded by a central line, on both sides of which are arranged the positive and negative thread teeth symmetrically arranged with respect to each other, respectively, and the drive screw (49) is sleeved symmetrically with the drive screw sleeve (47) by the positive and negative thread teeth.
10. The bridge combination internal fixation system for bone lengthening according to claim 5, characterized in that the hoop screw (5) comprises a hoop (51), the top end of the hoop (51) is symmetrically provided with an external thread (52), and the hoop (51) is screwed with the fastening nut (53) through the external thread (52).
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CN202111247980.1A CN114010294A (en) | 2021-10-26 | 2021-10-26 | Bridging combination internal fixation system for bone lengthening |
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CN202111247980.1A CN114010294A (en) | 2021-10-26 | 2021-10-26 | Bridging combination internal fixation system for bone lengthening |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024043846A1 (en) * | 2022-08-23 | 2024-02-29 | Exvet Medikal Danismanlik Yazilim Veterinerlik Hizmetleri Sanayi Ve Ticaret Limited Şirketi | Bone fixation apparatus |
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2021
- 2021-10-26 CN CN202111247980.1A patent/CN114010294A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024043846A1 (en) * | 2022-08-23 | 2024-02-29 | Exvet Medikal Danismanlik Yazilim Veterinerlik Hizmetleri Sanayi Ve Ticaret Limited Şirketi | Bone fixation apparatus |
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