Bone fragment connecting and fixing device
By designing a bone fragment connection fixture including a flexible belt, a fixing disc and a locking component, the problem of the existing bone fragment fixture is solved, and more stable bone fragment fixation and more convenient use is achieved.
Patent Information
- Application Number
- CN202421299947.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The existing bone fragment fixing device has unreasonable structure, is not firmly fixed, and is inconvenient to use, which can easily lead to dislocation of the bone flap and affect the surgical effect.
A bone fragment connecting fixing device including a split-set flexible belt, an upper fixing disk, a lower fixing disk and a locking member is designed. Both ends of the flexible belt pass through the fixing disc and the locking member, and through the occlusion structure of the rack and elastic projection of the locking member, one-way movement is achieved and the opposite direction is restricted, thereby fixing the bone fragments.
The device can more firmly fix bone fragments through the combination of flexible belts and fixing disks, reduce the risk of displacement, improve surgical results, and is suitable for bone fragments and prostheses of different thicknesses due to the replacement of structure.
Smart Images
Figure CN222870617U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of a fixing device for bone fragments and bone flaps, in particular to a bone fragment connection and fixing device. Background Art
[0002] Craniotomy and free bone flap formation is a common basic operation in neurosurgery and a necessary step for entering the brain for operation. Except for some cases of intracranial hypertension that require bone flap decompression, in most cases the free bone flap needs to be repositioned and fixed after the intracranial operation is completed to maximize the reconstruction of the integrity of the bone fragments, maintain the balance and stability of intracranial pressure, and protect the brain tissue. When repositioning the free bone flap, it needs to be fixed to the surrounding bone fragments with the help of instruments to prevent the bone flap from shifting or pulsating with the brain tissue.
[0003] In cranial surgery, bone fragment locks are often needed. Bone fragment locks are a common fixation device for bone fragments and bone flaps. The bone fragment locks currently used have an unreasonable overall structure. Most of them use threaded fastening to lock two locking plates to achieve the purpose of fixing bone fragments. This locking method not only takes a long time for the operation, but also because the locking plates are relatively thin, there are fewer contact points between the locking plates and the bone fragments, and there are fewer locking threads, which can easily cause the upper locking plate to fall off, affecting the surgical effect. In severe cases, a second operation is required, which brings greater pain to the patient. Utility Model Content
[0004] The main technical problem to be solved by the utility model is that the bone fragments in the prior art are not firmly fixed and inconvenient to use, so a bone fragment connection and fixing device is provided.
[0005] In order to solve the above technical problems, the utility model provides a bone fragment connection and fixing device, which is characterized by comprising four components: a separately arranged flexible belt, an upper fixing plate, a lower fixing plate and a locking component;
[0006] The two ends of the flexible belt respectively pass through the lower fixing plate, the upper fixing plate and the locking component in sequence to realize the combination of the fixing device; and when combined, the locking component allows the two ends of the flexible belt to move in one direction and pass through the locking component respectively, but restricts the flexible belt from moving in the opposite direction.
[0007] In a preferred embodiment, the upper fixing disk, the lower fixing disk and the locking component are provided with two openings; the two ends of the flexible belt respectively pass through the two openings of the lower fixing disk, the upper fixing disk and the locking component in turn to realize the combination of the fixing device; it also includes a booster and a handle; when combined, after the two ends of the flexible belt pass through the locking component, they also pass through the booster and connect the two ends of the flexible belt to the handle; by pulling the handle and pressing down the booster, the locking component and the upper fixing disk can be moved toward the lower fixing disk; the flexible belt is provided with a rack, and elastic protrusions are provided in the two openings of the locking component; the elastic protrusions engage with the rack to allow the flexible belt to move in one direction and limit the flexible belt to move in the opposite direction.
[0008] In a preferred embodiment, a plurality of first tooth structures are distributed on the circumference of the upper fixed plate, at least two of the plurality of first tooth structures are distributed in different shapes; at least one first tooth structure has a larger coverage area than the remaining first tooth structures; and an anti-slip structure is provided on the lower surface of at least part of the first tooth structures;
[0009] In a preferred embodiment, the anti-skid structure is configured as an anti-skid groove.
[0010] In a preferred embodiment, the upper fixing plate and the lower fixing plate on the flexible belt have different shapes.
[0011] The utility model also provides a bone fragment connection and fixing device, comprising three components: a separately arranged flexible belt, an upper fixing plate and a lower fixing plate;
[0012] The upper fixing plate and the lower fixing plate are respectively provided with two openings;
[0013] The two openings of the upper fixed plate are respectively provided with locking components;
[0014] The two ends of the flexible belt respectively pass through the corresponding openings of the lower fixing plate and the upper fixing plate in sequence to realize the assembly of the fixing device;
[0015] When combined, the locking component allows the two ends of the flexible belt to move in one direction and pass through the two openings of the upper fixed plate respectively, but restricts the flexible belt from moving in the opposite direction.
[0016] In a preferred embodiment, it also includes a booster and a handle; when assembled, the two ends of the flexible belt pass through the locking component and then pass through the booster, and the two ends of the flexible belt are connected and fixed to the handle;
[0017] By pulling the handle and pressing down the booster, the upper fixed plate can be moved toward the lower fixed plate; the flexible belt is provided with a rack, and the locking component is an elastic protrusion; the elastic protrusion is engaged with the rack to allow the two ends of the flexible belt to move in one direction and limit the flexible belt from moving in the opposite direction.
[0018] In a preferred embodiment, a plurality of first tooth structures are distributed on the circumference of the upper fixed plate, and at least two of the plurality of first tooth structures are distributed in different shapes; at least one first tooth structure has a larger coverage area than the other first tooth structures; and an anti-slip structure is provided on the lower surface of at least part of the first tooth structures;
[0019] A plurality of second tooth structures are distributed on the circumference of the lower fixed plate, and the plurality of second tooth structures are distributed in different shapes; an anti-slip structure is provided on the upper surface of at least part of the second tooth structures.
[0020] In a preferred embodiment, the anti-skid structure is configured as an anti-skid groove.
[0021] In a preferred embodiment, the upper fixing plate and the lower fixing plate on the flexible belt have different shapes.
[0022] The utility model also provides a bone fragment connection and fixing device, which comprises three parts: an upper fixing plate, a lower fixing plate and a locking component which are separately arranged; two flexible belts are also connected to the lower fixing plate;
[0023] One end of each of the two flexible belts is fixed to the lower fixing plate, and the other end of each of the two flexible belts passes through the upper fixing plate and the locking component in sequence to realize the assembly of the fixing device;
[0024] When combined, the locking component allows the other end of each of the two flexible belts to move in one direction and pass through the locking component respectively, but restricts the other end of each of the two flexible belts from moving in the opposite direction.
[0025] In a preferred embodiment, the upper fixing plate and the locking component are provided with two openings; the other end of each of the two flexible belts passes through the two openings of the upper fixing plate and the locking component in sequence to realize the assembly of the fixing device;
[0026] It also includes a booster and a handle; when combined, the other end of each of the two flexible belts passes through the locking component and then passes through the booster, and the other end of each of the two flexible belts is connected to the handle;
[0027] By pulling the handle and pressing down the booster, the locking component and the upper fixed disk can be moved toward the lower fixed disk; the two flexible belts are provided with racks, and elastic protrusions are provided in the two openings of the locking component; the elastic protrusions are engaged with the racks to allow the other end of each of the two flexible belts to move in one direction and limit the other end of each of the two flexible belts to move in the opposite direction.
[0028] In a preferred embodiment, a plurality of first tooth structures are distributed on the circumference of the upper fixed plate, and at least two of the plurality of first tooth structures are distributed in different shapes; at least one first tooth structure has a larger coverage area than the other first tooth structures;
[0029] An anti-slip structure is arranged on the lower surface of at least one of the first tooth-shaped structures; and a plurality of second tooth-shaped structures are distributed on the peripheral side of the lower fixed plate.
[0030] In a preferred embodiment, the anti-skid structure is configured as an anti-skid groove.
[0031] In a preferred embodiment, the upper fixing plate and the lower fixing plate on the flexible belt have different shapes.
[0032] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:
[0033] 1. The patient's bone fragments can be fixed by separately setting up a flexible belt, an upper fixing plate, a lower fixing plate and a locking component. The upper and lower fixing plates are movable and can be replaced with fixing plates of appropriate sizes according to needs. It is used to fix various free bone flaps, artificial bone fragment prosthesis implants of different thicknesses and original skulls, effectively solving the problem of bone fragment fixation failure that is easily caused by the difference in thickness between the patient's bone fragments and the bone fragment prosthesis in existing clinical practice.
[0034] 2. By setting a locking component to cooperate with the flexible belt to move upward, the distance between the upper fixing plate and the lower fixing plate is adjusted to adapt to the thickness of the artificial bone fragments. The position of the upper fixing plate is adjusted to cooperate with the locking component, so that the upper fixing plate and the lower fixing plate maintain the fixing effect on the artificial bone fragments, effectively and stably and firmly connecting the bone fragments and the bone flap.
[0035] 3. By setting irregular tooth structures on the upper and lower fixing plates, the upper and lower fixing plates can be made to fit more closely by using the deformable structure of the tooth structures. An anti-slip structure is set on the inner surface of the tooth structures to increase the anti-slip ability of the contact surface with bone fragments and bone flaps, which can prevent displacement during or after surgery. BRIEF DESCRIPTION OF THE DRAWINGS
[0036] Figure 1 This is a complete diagram of the bone fragment connection and fixing device in the preferred embodiment of the utility model;
[0037] Figure 2 It is a schematic diagram of a lower fixing plate passing through the flexible belt in a preferred embodiment of the utility model;
[0038] Figure 3 It is a partial enlarged schematic diagram of a lower fixing plate passing through the bottom of the flexible belt in a preferred embodiment of the utility model;
[0039] Figure 4 It is a schematic diagram of the adaptation of the upper fixing plate and the locking component in the preferred embodiment of the utility model;
[0040] Figure 5 It is a schematic diagram of the flexible belt passing through the upper fixing plate and the locking component in the preferred embodiment of the utility model;
[0041] Figure 6 This is a structural schematic diagram of a locking component in a preferred embodiment of the utility model;
[0042] Figure 7 This is a schematic diagram of the structure of the upper fixed plate in the preferred embodiment of the utility model;
[0043] Figure 8 This is a structural schematic diagram of the first tooth-shaped structure distributed on the upper fixed disk in the preferred embodiment of the utility model;
[0044] Fig. 9 This is a schematic diagram of the structure of the lower fixed plate in the preferred embodiment of the utility model;
[0045] Fig.10 This is a schematic diagram of the structure of the booster in the preferred embodiment of the utility model;
[0046] Fig.11 It is a schematic diagram of the structure of the handle in the preferred embodiment of the utility model.
[0047] Fig.12 This is a complete diagram of the bone fragment connection and fixing device in the first embodiment of the utility model;
[0048] Fig.13 It is a schematic diagram of the upper and lower fixing plates passing through the flexible belt in the first embodiment of the utility model;
[0049] Fig.14 It is a partial schematic diagram of the upper fixing plate passing through the middle of the flexible belt in the first embodiment of the utility model;
[0050] Fig.15 This is a schematic diagram of the structure of the upper fixed plate in the first embodiment of the utility model;
[0051] Fig.16This is a schematic diagram of the structure in which the flexible belt and the lower fixed plate are integrated in the second embodiment of the utility model.
[0052] Explanation of the accompanying drawings: 1. Flexible belt; 11. Rack; 2. Locking component; 21. Second opening; 22. Elastic protrusion; 3. Upper fixed disk; 31. First opening; 32. First toothed structure; 33. Anti-slip structure; 4. Lower fixed disk; 41. Second toothed structure; 42. Third opening; 5. Booster; 51. L-shaped hand support; 6. Handle. DETAILED DESCRIPTION
[0053] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.
[0054] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0055] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "installed / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.
[0056] refer to Figure 1-Figure 11 This embodiment provides a bone fragment connection and fixation device, which is mainly aimed at the problems in the prior art that the bone fragment fixation is not firm enough, is expensive, is inconvenient to use, and has a complex structure.
[0057] At present, clinical craniotomy and free bone flap formation is a common basic operation in neurosurgery and a necessary step for entering the intracranial operation. Except for some cases of intracranial hypertension that require bone flap decompression, in most cases the free bone flap needs to be repositioned and fixed after the intracranial operation is completed to maximize the reconstruction of the integrity of the bone fragments, maintain the balance and stability of intracranial pressure, and protect the brain tissue. When repositioning the free bone flap, it needs to be fixed to the surrounding bone fragments with the help of instruments (bone fragment connection and fixing device) to prevent the bone flap from shifting or pulsating with the brain tissue.
[0058] The bone fragment connection and fixing device comprises six components, namely, a locking component 2, an upper fixing plate 3, a flexible belt 1, a lower fixing plate 4, a booster 5 and a handle 6, which are arranged separately.
[0059] The flexible belt 1 is a strip with a flexible structure, and the two ends of the flexible belt 1 are sequentially passed through the lower fixing plate 4, the upper fixing plate 3 and the locking component 2 to form a combination of the fixing device.
[0060] The upper fixing plate 3 is a circular fixing plate structure, which clamps, contacts and fixes the bone flap together with the lower fixing plate 4, and is used to contact the bone flap surface of the bone, and two first openings 31 are set in the middle of the circular fixing plate, and the two first openings 31 are symmetrical about the center point of the upper fixing plate 3. The upper fixing plate 3 is inserted into the flexible belt 1 through the first openings 31. A plurality of first tooth structures 32 are distributed on the edge of the circular plate of the upper fixing plate 3, and the plurality of first tooth structures 32 are distributed at intervals along the circumferential direction, and at least two of the plurality of first tooth structures 32 are distributed in different shapes, and an anti-slip structure 33 is set on the lower surface of at least part of the first tooth structures 32.
[0061] Specifically, the plurality of first tooth structures 32 may be composed of second tooth structures of the same shape or of different shapes, for example Figure 4 The first tooth structures 32 are distributed in different shapes along the circumferential direction, and at least one of the first tooth structures has a larger coverage area than the other tooth structures. The lower surface of at least one of the first tooth structures 32 is provided with an anti-slip structure 33, and the anti-slip structure 33 is provided with an anti-slip groove. During use, the first tooth structure 32 that contacts the highest tooth structure 32 firstly uses the anti-slip structure 33 to prevent slipping and displacement.
[0062] The locking component 2 can be inserted into or against the upper surface of the upper fixed disk 3. If inserted, it is inserted into the first opening 31 of the upper fixed disk 3. The locking component 2 can be pressed down by the booster 5 and drive the upper fixed disk 3 to move along the flexible belt 1. The function of the locking component 2 is that when used in combination, the locking component 2 allows the two ends of the flexible belt 1 to move in one direction and pass through the locking component 2 respectively, but restricts the flexible belt 1 from moving in the opposite direction.
[0063] The locking component 2 is provided with a second opening 21, through which the locking component 2 is inserted into the flexible belt 1. Elastic protrusions 22 are provided in the two second openings 21 of the locking component 2, and a rack 11 is provided on the flexible belt 1. The flexible belt 1 is a U-shaped structure, and racks 11 are provided on two opposite inner sides of the U-shaped flexible belt 1. The racks on the two inner sides engage with the elastic protrusions 22 to allow the flexible belt 1 to move in one direction and limit the flexible belt 1 from moving in the opposite direction. The U-shaped flexible belt 1 cooperates with the two elastic protrusions 22 of the locking component 2 to form a stable connection, so that the locking of the upper fixed disk 3 by the locking component 2 is more stable.
[0064] The unidirectional locking structure between the locking component 2 and the flexible belt 1 is that a rack 11 is provided on the flexible belt 1, and the extension length of the rack 11 satisfies the moving distance of the upper fixed disk 3. An elastic protrusion 22 is provided on the second opening 21 of the locking component 2 to form a sawtooth structure. When the booster 5 presses down the locking component 2 and presses down the upper fixed disk 3, the handle 6 is pulled to realize the upward movement of the flexible belt 1. The engagement structure between the second opening 21 and the rack 11 limits the downward movement of the flexible belt 1, thereby achieving the locking effect.
[0065] Specifically, the teeth on the rack 11 are inclined downward, and the elastic protrusion 22 arranged on the second opening 21 is inclined upward, so that when the flexible belt 1 moves upward, the teeth on the rack 11 can smoothly pass through the teeth of the sawtooth, and when the flexible belt 1 tends to move downward, the teeth on the rack 11 will hinder the elastic protrusion 22, thereby limiting the downward movement of the flexible belt 1, and at the same time limiting the movement of the upper fixing plate 3, so that the upper fixing plate 3 and the lower fixing plate 4 are locked, thereby achieving a fixing effect and fixing efficiency on the patient's bone fragments.
[0066] The lower fixed disk 4 is a circular fixed disk structure, and two third openings 42 are arranged in the middle of the circular fixed disk, and the two third openings 42 are symmetrical about the center point of the lower fixed disk 4. The third openings 42 are used to pass the lower fixed disk 4 through the two ends of the flexible belt 1. A plurality of second tooth structures 41 are distributed on the edge of the circular disk of the lower fixed disk 4, and the plurality of second tooth structures 41 are distributed at intervals along the circumferential direction, and the plurality of second tooth structures 41 are distributed in different shapes, and an anti-slip structure 33 is arranged on the lower surface of at least part of the first tooth structures 32.
[0067] Specifically, the plurality of second tooth structures 41 are composed of a plurality of second tooth structures of the same shape. The inner surface of the highest second tooth structure 41 among the plurality of second tooth structures 41 is provided with an anti-slip structure 33, and the anti-slip structure 33 is provided with an anti-slip groove. During use, the second tooth structure 41 that first contacts the highest second tooth structure 41 utilizes the anti-slip structure 33 to prevent slipping and displacement.
[0068] In a preferred embodiment, the upper fixed plate 3 adopts a deformable petal structure. The deformable petal structure is an innovative structural form based on bionics and expandable structural design. Its shape and effect are similar to petals. Under the action of force, it can adaptively deform and has a high degree of plasticity and flexibility.
[0069] By using the setting of the first tooth-shaped structure 32 to deform the petals, the bone fragments and the bone flap are irregular in shape in practice, and the first tooth-shaped structure 32 is arranged irregularly and at different heights, so that the contact part with the inner surface of the bone fragments and the bone flap can be deformed. This deformation function can make the upper fixing plate 3 and the lower fixing plate 4 fit more closely, and the anti-slip structure added to the contact surface of the upper fixing plate 3 and the lower fixing plate 4 can prevent displacement during or after surgery.
[0070] The handle 6 adopts a U-shaped handle 6, and the U-shaped open end of the handle 6 is inserted into the U-shaped two ends of the flexible belt 1. The handle 6 and the flexible belt 1 are fixedly connected by bite. The bite-fixed connection method can be the same as the bite-fixed connection method between the flexible belt 1 and the locking component 2, so as to allow the two ends of the flexible belt 1 to be inserted into the handle 6 to prevent the flexible belt 1 from being pulled out from the handle 6 and detached.
[0071] The booster 5 is a V-shaped booster 5 which is passed through the flexible belt 1 and provided with L-shaped hand-holding portions 51 on both sides of the booster 5. The doctor can press the L-shaped hand-holding portion 51 of the booster block with his hands, and use the booster 5 to press down the locking component 2 to drive the upper fixing plate 3 to move downward.
[0072] In this embodiment, the structure of the bone fragment connection and fixing device is as follows: a lower fixing plate 4 is connected to the bottom of the flexible belt 1, an upper fixing plate 3 is connected to the middle of the flexible belt 1, and a locking component 2 is connected to the upper end of the upper fixing plate 3, a booster 5 and a handle 6 are connected to the upper part of the flexible belt 1, and the handle 6 is connected to the end of the flexible belt 1.
[0073] Since the locking component 2, the upper fixing plate 3, the lower fixing plate 4 and the booster 5 are all arranged on the flexible belt 1, and the upper fixing plate 3 and the lower fixing plate 4 can be removed relative to the flexible belt 1, the upper fixing plate 3 and the lower fixing plate 4 arranged on the flexible belt 1 have different shapes. The upper fixing plate 3 and the lower fixing plate 4 can be replaced according to different usage requirements, and the size or different structure products can be adjusted according to actual usage.
[0074] The upper fixing plate 3 and the lower fixing plate 4 are replaceable structures, which can be replaced according to actual needs during surgery to avoid the problem of inappropriate selection in clinical practice. The replaceable upper fixing plate 3 and the lower fixing plate 4 can make clinical selection more convenient and quick, and match products that are more suitable for patients. The flexible combination structure makes clinical surgery more convenient and quick, and the structure is simple, which is conducive to improving the working performance of the entire device.
[0075] In this embodiment, the bone fragment connecting and fixing device can effectively connect the bone fragments and the bone flap stably and firmly. The method of using the bone fragment connecting and fixing device is as follows:
[0076] Step 1, placing the lower fixing plate 4 and the upper fixing plate 3 on the lower surface and the upper surface of the bone fragments and the bone flap respectively, so that the bone fragments and the bone flap are sandwiched between the lower fixing plate 4 and the upper fixing plate 3;
[0077] Step 2, using the handle 6 to pull the flexible belt 1 upward and press down the two sides of the pusher 5, so that the distance between the upper fixing plate 3 and the lower fixing plate 4 is reduced when the flexible belt 1 moves upward, and the upper fixing plate 3 is pressed against the upper surface of the bone fragments and the bone flap by using the second opening 21 on the locking component 2 and the meshing structure of the rack 11;
[0078] Step 3, reducing the distance between the upper fixing plate 3 and the lower fixing plate 4, increasing the pressure on the bone fragments and the bone flap between the upper fixing plate 3 and the lower fixing plate 4, and deforming and fitting the toothed structures on the lower fixing plate 4 and the upper fixing plate 3 according to the surface shape of the contacting bone, contacting the surface of the bone fragments and the bone flap, and fixing the bone fragments and the bone flap;
[0079] Step 4. After fixing, use scissors to cut off the excess flexible tape 1.
[0080] First embodiment, reference Figure 12-Figure 15 .
[0081] The first embodiment provides another bone fragment connection and fixation device, which includes a flexible belt 1 , an upper fixing plate 3 , a lower fixing plate 4 , a booster 5 and a handle 6 .
[0082] Different from the bone fragment connection and fixing device described in the above embodiments, in the first embodiment, the locking component 2 is arranged on the upper fixing plate 3 and is integrally arranged with the upper fixing plate 3, and the locking component 2 is no longer a separate component.
[0083] In the first embodiment, the combination of the fixing device is that the upper fixing plate 3 is provided with a first opening 31, the lower fixing plate 4 is provided with a third opening 42, and the two ends of the flexible belt 1 pass through the third opening 31 and the first opening 43 in sequence to string the lower fixing plate 4 and the upper fixing plate 3 together.
[0084] Similarly, a rack 11 is provided on the flexible belt 1, and a locking component 2 is provided in the first opening 31 of the upper fixed disk 3, and the locking component 2 is an elastic protrusion 22; when the flexible belt 1 moves upward, the engagement of the rack 11 and the elastic protrusion 22 is utilized to allow the two ends of the flexible belt 1 to move in one direction and restrict the flexible belt 1 from moving in the opposite direction.
[0085] Similarly, multiple first tooth structures 32 are distributed around the upper fixed plate 3, at least two of the multiple first tooth structures 32 are distributed in different shapes; anti-slip structures 33 are provided on the lower surfaces of at least some of the first tooth structures 32. Multiple second tooth structures 41 are distributed around the lower fixed plate 4.
[0086] Likewise, the upper fixing plate 3 and the lower fixing plate 4 passing through the flexible belt 1 are different.
[0087] The second embodiment, referring to Fig.16 .
[0088] The second embodiment provides another bone fragment connection and fixing device. Figure 1 The bone fragment connection and fixation device shown in the figure is further improved. Figure 1 The bone fragment connection and fixing device shown in the figure is different in that the lower fixing plate 3 and the flexible belt 1 are integrally arranged in the second embodiment, and there are two flexible belts 1, one end of each flexible belt 1 is respectively connected to the lower fixing plate 3. The upper fixing plate 4 and the locking component 2 are separately arranged.
[0089] That is, the bone fragment connection and fixing device comprises five parts, namely, a locking component 2, an upper fixing plate 3, a lower fixing plate 4, a booster 5 and a handle 6, which are separately arranged.
[0090] One end of each flexible belt 1 is connected to the lower fixed plate 4, and the other ends of the two flexible belts 1 pass through the upper fixed plate 3, the locking component 2, the booster 5 in sequence, and are fixedly connected to the handle 6.
[0091] In the second embodiment, the combination of the fixing device is that the upper fixing plate 3 is provided with two first openings 31, and the locking component 2 is provided with two second openings 21, and the upper fixing plate 3 and the locking component 2 are sequentially inserted on the two flexible belts 1 through the first openings 31 and the second openings 21. The two second openings 21 of the locking component 2 are provided with elastic protrusions 22, and a rack 11 is provided on each flexible belt 1. When the flexible belt 1 is pulled by the handle and moves upward relative to the upper fixing plate, the locking component 2, and the booster 5, the engagement of the rack 11 and the elastic protrusion 22 is used to allow the other end of each flexible belt 1 to move in one direction and restrict the other end of each flexible belt 1 from moving in the opposite direction.
[0092] Similarly, multiple first tooth structures 32 are distributed around the upper fixed plate 3, at least two of the multiple first tooth structures 32 are distributed in different shapes; anti-slip structures 33 are provided on the lower surfaces of at least some of the first tooth structures 32. Multiple second tooth structures 41 are distributed around the lower fixed plate 4.
[0093] Likewise, the upper fixing plate 3 and the lower fixing plate 4 passing through the flexible belt 1 are different.
[0094] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.
Claims
1. A bone fragment connection and fixation device, characterized in that: It includes four parts: a separately arranged flexible belt, an upper fixing plate, a lower fixing plate and a locking component; The two ends of the flexible belt respectively pass through the lower fixing plate, the upper fixing plate and the locking component in sequence to realize the assembly of the fixing device; When combined, the locking component allows the two ends of the flexible belt to move in one direction and pass through the locking component respectively, but restricts the flexible belt from moving in the opposite direction.
2. The bone fragment connection and fixation device according to claim 1, characterized in that: The upper fixing plate, the lower fixing plate and the locking member are provided with two openings; The two ends of the flexible belt respectively pass through the lower fixing plate, the upper fixing plate and the two openings of the locking component in sequence to realize the assembly of the fixing device; It also includes a booster and a handle; when assembled, the two ends of the flexible belt pass through the locking component and then pass through the booster, and the two ends of the flexible belt are connected to the handle; By pulling the handle and pressing down the booster, the locking component and the upper fixed disk can be moved toward the lower fixed disk; the flexible belt is provided with a rack, and elastic protrusions are provided in the two openings of the locking component; the elastic protrusions are engaged with the rack to allow the flexible belt to move in one direction and limit the flexible belt from moving in the opposite direction.
3. The bone fragment connection and fixation device according to claim 1, characterized in that: A plurality of first tooth structures are distributed on the circumference of the upper fixed plate, and at least two of the plurality of first tooth structures are distributed in different shapes; at least one first tooth structure has a larger coverage area than the other first tooth structures; An anti-slip structure is arranged on the lower surface of at least one of the first tooth-shaped structures; and a plurality of second tooth-shaped structures are distributed on the peripheral side of the lower fixed plate.
4. The bone fragment connection and fixation device according to claim 3, characterized in that: The anti-skid structure is configured as an anti-skid groove.
5. The bone fragment connection and fixation device according to claim 1, characterized in that: The upper and lower fixing discs on the flexible belt are shaped differently.
6. A bone fragment connection and fixation device, characterized in that: It includes three parts: a flexible belt, an upper fixing plate and a lower fixing plate which are separately arranged; The upper fixing plate and the lower fixing plate are respectively provided with two openings; The two openings of the upper fixed plate are respectively provided with locking components; The two ends of the flexible belt respectively pass through the corresponding openings of the lower fixing plate and the upper fixing plate in sequence to realize the assembly of the fixing device; When combined, the locking component allows the two ends of the flexible belt to move in one direction and pass through the two openings of the upper fixed plate respectively, but restricts the flexible belt from moving in the opposite direction.
7. The bone fragment connection and fixation device according to claim 6, characterized in that: It also includes a booster and a handle; when assembled, the two ends of the flexible belt pass through the locking component and then pass through the booster, and the two ends of the flexible belt are connected and fixed to the handle; By pulling the handle and pressing down the booster, the upper fixed plate can be moved toward the lower fixed plate; the flexible belt is provided with a rack, and the locking component is an elastic protrusion; the elastic protrusion is engaged with the rack to allow the two ends of the flexible belt to move in one direction and limit the flexible belt from moving in the opposite direction.
8. The bone fragment connection and fixation device according to claim 6, characterized in that: A plurality of first tooth structures are distributed on the circumference of the upper fixed plate, and at least two of the plurality of first tooth structures are distributed in different shapes; at least one first tooth structure has a larger coverage area than the other first tooth structures; and an anti-slip structure is provided on the lower surface of at least part of the first tooth structures; A plurality of second tooth structures are distributed on the circumference of the lower fixed disk.
9. The bone fragment connection and fixing device according to claim 8, characterized in that: The anti-skid structure is configured as an anti-skid groove.
10. The bone fragment connection and fixation device according to claim 6, characterized in that: The upper and lower fixing discs on the flexible belt are shaped differently.
11. A bone fragment connection and fixation device, characterized in that: It comprises three parts: an upper fixing plate, a lower fixing plate and a locking component which are separately arranged; two flexible belts are also connected to the lower fixing plate; One end of each of the two flexible belts is fixed to the lower fixing plate, and the other end of each of the two flexible belts passes through the upper fixing plate and the locking component in sequence to realize the assembly of the fixing device; When combined, the locking component allows the other end of each of the two flexible belts to move in one direction and pass through the locking component respectively, but restricts the other end of each of the two flexible belts from moving in the opposite direction.
12. The bone fragment connection and fixation device according to claim 11, characterized in that: The upper fixing plate and the locking component are provided with two openings; the other end of each of the two flexible belts passes through the two openings of the upper fixing plate and the locking component in sequence to realize the assembly of the fixing device; It also includes a booster and a handle; when combined, the other end of each of the two flexible belts passes through the locking component and then passes through the booster, and the other end of each of the two flexible belts is connected to the handle; By pulling the handle and pressing down the booster, the locking component and the upper fixed disk can be moved toward the lower fixed disk; the two flexible belts are provided with racks, and elastic protrusions are provided in the two openings of the locking component; the elastic protrusions are engaged with the racks to allow the other end of each of the two flexible belts to move in one direction and limit the other end of each of the two flexible belts to move in the opposite direction.
13. The bone fragment connection and fixation device according to claim 11, characterized in that: A plurality of first tooth structures are distributed on the circumference of the upper fixed plate, and at least two of the plurality of first tooth structures are distributed in different shapes; at least one first tooth structure has a larger coverage area than the other first tooth structures; An anti-slip structure is arranged on the lower surface of at least one of the first tooth-shaped structures; and a plurality of second tooth-shaped structures are distributed on the peripheral side of the lower fixed plate.
14. The bone fragment connection and fixation device according to claim 13, characterized in that: The anti-skid structure is configured as an anti-skid groove.
15. The bone fragment connection and fixation device according to claim 11, characterized in that: The upper and lower fixing discs on the flexible belt are shaped differently.