CN204049821U - Cannulated screw assembly for fixing olecranal fracture - Google Patents

Cannulated screw assembly for fixing olecranal fracture Download PDF

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Publication number
CN204049821U
CN204049821U CN 201420472099 CN201420472099U CN204049821U CN 204049821 U CN204049821 U CN 204049821U CN 201420472099 CN201420472099 CN 201420472099 CN 201420472099 U CN201420472099 U CN 201420472099U CN 204049821 U CN204049821 U CN 204049821U
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hollow screw
screw body
hole
cannulated screw
hollow
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CN 201420472099
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Chinese (zh)
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张志山
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北京大学第三医院
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Publication of CN204049821U publication Critical patent/CN204049821U/en

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Abstract

The utility model discloses a cannulated screw assembly for fixing an olecranal fracture. The cannulated screw assembly comprises a cannulated screw body with the tail section provided with threads and a gasket arranged on the cannulated screw body in a sleeving mode and freely rotating around the axis of the cannulated screw body. The gasket further comprises a first annulus with a first through hole and a second annulus with a second through hole, the diameter of the second through hole is smaller than that of the first through hole, and a titanium cable can penetrate into the second through hole. An axial blocking structure is arranged between the cannulated screw body and the gasket, and the gasket is axially and fixedly installed on the cannulated screw body under the effect of the axial blocking structure. The axial blocking structure is arranged between the cannulated screw body and the gasket, the axial freedom degree between the cannulated screw body and the gasket is limited through the axial blocking structure, the gasket can only circumferentially rotate around the axis of the cannulated screw body and cannot axially slide relative to the cannulated screw body, the gasket is prevented from slipping from the cannulated screw body, and the stability of the whole structure of the hollow nail assembly is guaranteed.

Description

—种用于固定尺骨鹰嘴骨折的空心钉组件 - a kind of hollow screw fixation assembly olecranon fractures

技术领域 FIELD

[0001] 本实用新型涉及医疗器械技术领域,特别涉及一种用于固定尺骨鹰嘴骨折的空心钉组件。 [0001] The present invention relates to a technical field of medical devices, and more particularly to hollow screw assembly for fixation of the olecranon fractures.

背景技术 Background technique

[0002] 尺骨鹰嘴骨折是较常见的骨折,骨折块分离小于2mm而且肘关节屈曲90度移位无增加、可以主动抗重力伸肘的无移位骨折选择保守治疗,其余移位性骨折应选择手术。 [0002] olecranon fractures are relatively common fractures, separation of fracture fragments less than 2mm and no shift of 90 degrees elbow flexion increases, can be active without antigravity elbow fractures select conservative treatment, displaced fracture should rest select surgery. 开发适合固定尺骨鹰嘴骨折的空心钉组件,是尺骨固定术的关键。 Development for fixed hollow screw assembly olecranon fracture is the key to fixation of the ulna.

[0003] 现有技术中可采用空心钉作为尺骨鹰嘴骨折的固定件,该固定系统包括外径为4.0mm的空心钉、套设在空心钉本体的垫片和钛缆,其中,空心钉的外径小于垫片的内径,SP空心钉与垫片之间具有径向间隙,且两者的轴向和周向均具有自由度,垫片可沿空心钉的轴向滑动,同时可绕空心钉的轴线转动;具体地,尺骨鹰嘴骨折复位后克式针临时固定,克式针更换为导针,沿导针拧入4.0mm空心钉髓内固定远近端骨折块,垫片的小孔穿入钛缆,在尺骨背侧8字交叉后穿过远端尺骨干的骨洞拉紧,这样钛缆、垫片和空心钉形成牢固的一体化新型张力带系统,术后即可以开始功能练习。 [0003] In the prior art can be employed as a fixed hollow screw member olecranon fractures, the fixing system comprises a hollow outer diameter of 4.0mm nails, provided in the spacer sleeve and titanium cable hollow screw body, wherein the hollow screw outer diameter smaller than the inner diameter of the gasket, having a radial gap between the hollow screw and the spacer SP, and both the axial and circumferential have freedom pad slidably in the axial direction of the hollow screw, and rotatable about the hollow screw axis of rotation; specifically, the olecranon fractures g temporary fixing needle, needle grams replace the guide pin along the guide pin screwed into the intramedullary fixation nails 4.0mm hollow proximal and distal fracture fragment, apertures through shims titanium into the cable, through the bone hole in the distal ulnar shaft of the ulna, 8 cross back side taut, so that titanium cable, gaskets, and hollow screw forms a strong integration of new tension band system can begin after the exercise function .

[0004] 但是,上述空心钉组件中的空心钉与垫片具有轴向自由度,空心钉会从尺骨鹰嘴松动退钉,使得骨折固定稳定性降低,此外松动的空心钉会造成皮肤的激惹。 [0004] However, the hollow screw and the spacer of said hollow staple assembly has an axial degree of freedom, will loosen the hollow screw nail back from the olecranon, such that the fracture fixation stability decreases and in addition the hollow screw loose skin will cause the laser provoke.

[0005] 因此,提供一种固定尺骨鹰嘴骨折的专用空心钉组件,其能够限制空心钉与垫片之间的轴向自由度,避免空心钉松动退钉,从而避免骨折固定稳定性降低,保证空心钉组件的整体结构稳定性,就成为本领域技术人员亟需解决的问题。 [0005] Accordingly, a special hollow screw fixation assembly olecranon fractures, which can limit the axial degree of freedom between the hollow screw and the washer, avoiding screw loosening hollow nail back, so as to avoid reducing the stability of the fracture fixation, ensure the overall structural stability of the hollow screw assembly, it becomes a problem to those of skill needed to solve.

实用新型内容 SUMMARY

[0006] 本实用新型的目的是提供一种用于固定尺骨鹰嘴骨折的空心钉组件,其限制了空心钉与垫片之间的轴向自由度,避免空心钉松动退钉,保证了空心钉组件的整体结构稳定性,从而保证了骨折固定术的成功率。 [0006] The object of the present invention is to provide a hollow screw assembly for fixation of the olecranon fractures, which limits the axial freedom between the hollow screw and the washer, avoiding screw loosening hollow nail back, to ensure that the hollow overall structural stability of the staple assembly so as to ensure the success rate of fracture fixation.

[0007] 为解决上述技术问题,本实用新型提供一种用于固定尺骨鹰嘴骨折的空心钉组件,包括末段开设有螺纹的空心钉本体,和套设于所述空心钉本体、并绕所述空心钉本体的轴线周向转动的垫片,所述垫片包括开设有第一通孔的第一环体和开设有第二通孔的第二环体,所述第二通孔的孔径小于所述第一通孔的孔径,所述第二通孔可穿过钛缆;所述空心钉本体与所述垫片之间设置有轴向阻挡结构,所述垫片在所述轴向阻挡结构的作用下轴向固定安装于所述空心钉本体。 [0007] In order to solve the above problems, the present invention provides a hollow fixed ulnar olecranon fractures a screw assembly comprising a threaded end section defines a hollow screw body, and a sleeve disposed on the hollow screw body, and wound the body of the hollow screw rotating shim comprises a circumferential axis defines a first through-hole of the first ring and a second ring defines a second through hole, the second through-hole the first diameter is smaller than the diameter of the through hole, the second through-hole may pass through the titanium cable; said barrier structure is provided with an axial spacer between the body and the hollow screw, the shaft of said spacer under the action of the blocking structure axially fixedly mounted to the hollow screw body.

[0008] 优选地,所述轴向阻挡结构包括设置于所述空心钉本体外端的螺帽,和安装于所述空心钉本体、并与所述螺帽具有预定轴向距离的固定块,所述第一环体套设于所述空心钉本体,并设置于所述螺帽与所述固定块之间,所述螺帽的外径和所述固定块的外径均大于所述第一通孔的孔径。 [0008] Preferably, the axial blocking structure includes a staple present in the outer end of the hollow nut, and attached to the hollow screw body, and a nut having a fixing block with a predetermined axial distance, the said first ring sleeved on the hollow screw body, and disposed between the nut and the fixed block, an outer diameter and an outer diameter of the nut of the fixing block are greater than the first diameter of the through-hole.

[0009] 优选地,所述定位块沿所述空心钉本体的周向延伸一周。 [0009] Preferably, the one week positioned circumferentially extending along the hollow screw body block.

[0010] 优选地,所述定位块焊接或者粘接于所述空心钉本体的外周壁。 [0010] Preferably, said positioning block welded or bonded to the outer peripheral wall of the hollow screw body.

[0011 ] 优选地,所述第一环体与所述第二环体共面设置。 [0011] Preferably, the first ring and the second ring member arranged coplanar.

[0012] 优选地,所述第一环体的外径为7_、边宽为1.5mm,所述第一通孔的孔径3.8_。 [0012] Preferably, the outer diameter of said first ring member is 7_, edge width of 1.5mm, the aperture of the first through hole 3.8_.

[0013] 优选地,所述第二环体的外径为2.3mm,所述第二通孔的孔径为1.4_。 [0013] Preferably, the outer diameter of the second ring is 2.3mm, diameter of the second through hole is 1.4_.

[0014] 优选地,所述空心钉本体的螺纹段的外径为4.0mm。 [0014] Preferably, the outer diameter of the hollow screw thread segment body is 4.0mm.

[0015] 本实用新型所提供的空心钉组件用于固定尺骨鹰嘴骨折,该空心钉组件包括末段开设有螺纹的空心钉本体,和套设于所述空心钉本体、并绕所述空心钉本体的轴线周向转动的垫片,所述垫片进一步包括开设有第一通孔的第一环体和开设有第二通孔的第二环体,所述第二通孔的孔径小于所述第一通孔的孔径,所述第二通孔可穿过钛缆;所述空心钉本体与所述垫片之间设置有轴向阻挡结构,所述垫片在所述轴向阻挡结构的作用下轴向固定安装于所述空心钉本体。 [0015] The present invention provides a hollow screw assembly for fixation olecranon fractures, the nail assembly includes a hollow end section defines a threaded hollow screw body, and a sleeve disposed on the hollow screw body, and around the hollow the axis of the nail body is rotated in the circumferential gasket, said gasket further comprises a first ring member defines a first through hole and a second ring member defines a second through hole, the diameter of the second through hole is smaller than the aperture of the first through hole, the second through-hole may pass through cable titanium; the axial blocking structure is provided between the hollow body and the nail a gasket in said axial blocking under the action of the axially fixed structure attached to the hollow screw body.

[0016] 这样,在使用过程中,尺骨鹰嘴骨折复位后克式针临时固定,沿克式针方向插入空心钉导针,沿导针拧入空心钉简单易行。 [0016] Thus, during use, the olecranon fractures g temporary fixing needle, a staple guide pin inserted into the hollow needle along the g direction along the guide pin screwed into the hollow screw simple. 空心钉的螺纹把持髓内骨质,使骨折块间加压,利于骨折愈合。 Threaded hollow bone intramedullary nail grip, so that the pressure between the fracture fragments, facilitate fracture healing. 由于在空心钉本体和垫片之间设置有轴向阻挡结构,空心钉本体、垫片和钛缆形成一体化结构,并通过该轴向阻挡结构限制了空心钉与垫片之间的轴向自由度,垫片仅能够绕空心钉本体的轴线周向转动,而无法相对于空心钉本体轴向滑动,从而避免空心钉松动退钉,进而避免了关节活动时空心钉本体从骨折滑出,保证了空心钉组件的整体结构稳定性。 Since the gasket between the body and the hollow screw is provided with an axial blocking structure, the hollow screw body, and a titanium spacer structure to form an integrated cable, and limits the axial structure of the hollow screw between the washer axially through the barrier degree of freedom, can be only around the spacer body, the hollow screw axis circumferentially rotated relative to the hollow screw body can not slide axially, thus avoiding screw loosening hollow nail back, thereby avoiding the time and space of motion of the body from sliding out of core staple fracture, to ensure the stability of the overall structure of the hollow screw assembly. 加用的新型垫片增加了螺钉帽的面积,能够挤压固定与肱三头肌腱相连的更加碎小的骨折块。 Plus new gaskets increases the area of ​​the screw cap can be fixed pressing triceps tendon fracture Suixiao more contiguous block. 垫片有钛缆的锚定点,小孔的内径能够穿过临床上常用的钛缆。 Titanium spacer cable anchor point, the inner diameter can pass through the apertures of titanium cable used clinically. 该固定方法采用空心钛钉和钛缆,骨折愈合后不必取出内固定物,避免了二次手术的痛苦。 The fixing method and the use of hollow titanium screw titanium cable, after fracture healing without removing the internal fixation, to avoid the pain second surgery. 新型张力带系统比锁定板小巧,对皮肤的激惹小,费用也少很多。 The new compact tension band than the lock system board, small irritation to the skin, the costs are much less.

[0017] 在一种优选的实施方式中,本实用新型所提供的轴向阻挡结构包括设置于所述空心钉本体外端的螺帽,和安装于所述空心钉本体、并与所述螺帽具有预定轴向距离的固定块,所述第一环体套设于所述空心钉本体,并设置于所述螺帽与所述固定块之间,所述螺帽的外径和所述固定块的外径均大于所述第一通孔的孔径。 [0017] In one preferred embodiment, the present invention is provided novel axial blocking structure includes a staple according to the outer end of the hollow nut, and attached to the hollow screw body, and the nut fixing block having a predetermined axial distance, said first ring member sleeved on said hollow screw body, and disposed between the nut and the fixed block, and the outer diameter of the fixing nut an outer diameter greater than the diameter of the blocks of the first through hole. 这样,通过在空心钉本体上安装固定块,并通过固定块限制垫片轴向滑动的结构形式,简化了轴向定位结构的加工过程,且不会破坏空心钉本体的结构性能。 Thus, by fixing block mounted on a hollow screw body, and the spacer structure to limit axial sliding through a fixed block, to simplify the structure of the axial positioning of the process, and does not destroy the structural performance of the hollow screw body.

[0018] 在另一种优选的实施方式中,本实用新型所提供的空心钉组件中,其第一环体的外径为7mm、边宽为1.5mm,所述第一通孔的孔径3.8mm,所述第二环体的外径为2.3mm,所述第二通孔的孔径为1.4_。 [0018] In another preferred embodiment, the present invention provides a hollow screw assembly, the outer diameter of the first ring is 7mm, edge width of 1.5mm, the diameter of the first through hole 3.8 mm, an outer diameter of the second ring member is 2.3mm, diameter of the second through hole is 1.4_. 该尺寸规格能够更加适合用于固定尺骨鹰嘴骨折,从而提高了空心钉组件的适用性。 The dimensions can be more suitable for fixing olecranon fractures, thereby increasing the applicability of the hollow screw assembly.

附图说明 BRIEF DESCRIPTION

[0019] 图1为本实用新型所提供的空心钉组件一种具体实施方式的结构示意图; [0019] FIG. 1 is a schematic structural diagram of a hollow screw assembly disclosure provided to a specific embodiment;

[0020] 图2为图1所示空心钉组件中垫片的结构示意图。 [0020] FIG. 2 is a schematic view of the hollow screw shim assembly 1 shown in FIG.

具体实施方式 Detailed ways

[0021] 本实用新型的核心是提供一种用于固定尺骨鹰嘴骨折的空心钉组件,其限制了空心钉与垫片之间的轴向自由度,避免空心钉从垫片安装孔中滑脱,保证了空心钉组件的整体结构稳定性,从而保证了骨折固定术的成功率。 [0021] The core of the present invention is to provide a hollow screw assembly for fixation of the olecranon fractures, which limits the axial freedom between the hollow screw and the washer, the washer avoid slipping hollow screw mounting hole , to ensure stability of the overall structure of the hollow screw assembly, so as to ensure the success rate of fracture fixation.

[0022] 为了使本技术领域的人员更好地理解本实用新型方案,下面结合附图和具体实施方式对本实用新型作进一步的详细说明。 [0022] In order to make those skilled in the art better understand the solutions of the present disclosure, the drawings and the following detailed description in conjunction with specific embodiments of the present invention further.

[0023] 请参考图1,图1为本实用新型所提供的空心钉组件一种具体实施方式的结构示意图;图2为图1所示空心钉组件中垫片的结构示意图。 [0023] Please refer to FIG 1, FIG. 1 is novel hollow screw assembly provided a specific practical embodiment of a schematic structure; FIG. 2 a schematic view of the structure of the hollow screw assembly shown in FIG. 1 for the gasket.

[0024] 在一种具体实施方式中,本实用新型所提供的空心钉组件用于固定尺骨鹰嘴骨折,该空心钉组件包括末段开设有螺纹的空心钉本体1,和套设于所述空心钉本体1、并绕所述空心钉本体I的轴线周向转动的垫片2,所述垫片2进一步包括开设有第一通孔211的第一环体21和开设有第二通孔221的第二环体22,所述第二通孔221的孔径小于所述第一通孔211的孔径,所述第二通孔221可穿过钛缆4 ;所述空心钉本体I与所述垫片2之间设置有轴向阻挡结构,所述垫片2在所述轴向阻挡结构的作用下轴向固定安装于所述空心钉本体I。 [0024] In a specific embodiment, the present invention provides a hollow screw assembly for fixation olecranon fractures, the nail assembly includes a hollow end section defines a hollow screw threaded body 1, and the sleeved a hollow screw body, the hollow screw body and about I to 2 rotating pad, the pad 2 further comprising a circumferential axis defines a first through hole 211 of the first ring member 21 and defines a second through hole 221 of the second ring member 22, the second through hole 221 is smaller than the first aperture 211 of the aperture hole, the second through hole 221 may pass through the titanium cable 4; I said hollow body and the nail is provided with an axial blocking structure, the spacer 2 is fixed axially to the hollow screw body is mounted in the axial direction under the effect of a barrier structure between two of said spacer I.

[0025] 尺骨鹰嘴骨折复位后克式针临时固定,沿克式针方向插入空心钉导针,沿导针拧入空心钉简单易行。 [0025] After the olecranon fractures g temporary fixing needle, a staple guide pin inserted into the hollow needle along the g direction along the guide pin screwed into the hollow screw simple. 空心钉的螺纹把持髓内骨质,使骨折块间加压,利于骨折愈合;由于在空心钉本体和垫片之间设置有轴向阻挡结构,空心钉本体、垫片和钛缆形成一体化结构,并通过该轴向阻挡结构限制了空心钉与垫片之间的轴向自由度,垫片仅能够绕空心钉本体的轴线周向转动,而无法相对于空心钉本体轴向滑动,从而避免空心钉松动退钉,保证了空心钉组件的整体结构稳定性,提高了尺骨鹰嘴骨折固定术的成功率。 Threaded hollow bone intramedullary nail grip, so that the pressure between the fracture fragments, facilitate healing; since the hollow screw between the washer body and the axial blocking structure, the hollow screw body, and a gasket is integrally formed titanium cable structure, and the structure limits the axial freedom between the hollow screw and the washer axially through the barrier, can be only around the spacer body, the hollow screw axis circumferentially rotated relative to the hollow screw body can not slide axially, whereby avoid hollow screw loose nail back to ensure the stability of the overall structure of the hollow screw assembly to improve the olecranon fracture fixation success rate.

[0026] 优选地,本实用新型所提供的轴向定位结构包括设置于所述空心钉本体外端的螺帽,和安装于所述空心钉本体、并与所述螺帽具有预定轴向距离的固定块,所述第一环体套设于所述空心钉本体,并设置于所述螺帽与所述固定块之间,所述螺帽的外径和所述固定块的外径均大于所述第一通孔的孔径。 [0026] Preferably, the present invention provides an axial positioning structure comprises a hollow screw provided in the outer end of this nut, and attached to the hollow screw body, and the nut having a predetermined axial distance fixing block, said first ring member sleeved on said hollow screw body, and disposed between the nut and the fixed block, an outer diameter and an outer diameter of the nut is greater than the fixed block the aperture of the first through hole. 这样,通过在空心钉本体上安装固定块,并通过固定块限制垫片轴向滑动的结构形式,简化了轴向定位结构的加工过程,且不会破坏空心钉本体的结构性能。 Thus, by fixing block mounted on a hollow screw body, and the spacer structure to limit axial sliding through a fixed block, to simplify the structure of the axial positioning of the process, and does not destroy the structural performance of the hollow screw body.

[0027] 进一步地,为了提高垫片位置限定的可靠性,定位块优选为沿空心钉本体的轴向延伸一周设置,显然地,也可以在轴向均布若干分散的固定块。 [0027] Further, in order to improve the reliability of the gasket defined position, preferably the axial direction positioning block hollow screw body extend week obviously, may be a plurality of uniform dispersion in the axial direction of the fixing block.

[0028] 从理论上来讲,上述轴向定位结构的功能为限制垫片2相对于空心钉本体I轴向的自由度,同时不会影响垫片2相对于空心钉本体I在周向上的转动自由度,因此,也不局限于上述具体实施例。 [0028] Theoretically, the axial positioning function of the above structure is limiting the staple pad 2 with respect to the hollow body I axial freedom, without affecting the staple pad 2 with respect to the hollow body to rotate in the circumferential direction I degree of freedom, therefore, not limited to the specific embodiments.

[0029] 例如,上述会走向定位结构可以为周向开设于所述空心钉本体I的第一凹槽,所述第一环体21压装于所述第一凹槽,且所述第一通孔211的孔径大于所述第一凹槽的槽底直径,并小于所述空心钉本体I的外径;该种设置方式结构较为简单,且定位较为可靠。 [0029] For example, the above-described structure may be positioned toward the first recess defines a hollow screw body I is peripheral, said first ring member 21 press fitted in the first groove, and the first diameter of the through hole 211 is larger than the groove bottom diameter of the first recess and smaller than the outer diameter of the hollow screw body I; this kind of arrangement is relatively simple structure, and positioning is more reliable.

[0030] 又例如,上述轴向定位结构可以包括周向开设于所述第一环体21内壁的第二凹槽,和设置于所述空心钉本体I外壁的定位块,所述定位块卡接于所述第二凹槽,并沿所述第二凹槽周向转动。 [0030] As another example, the above-described positioning structure may include a circumferential axial positioning of the hollow screw body I block outer wall, the positioning defines the second recess in said first ring inner wall of the body 21, and setting block cards connected to the second groove and the second groove to rotate in the circumferential direction.

[0031] 需要指出的是,由于在空心钉本体上实现开槽工艺较为困难,生产成本较高,因此,优选方案为在空心钉本体上焊接固定块的实施方式。 [0031] It should be noted that, as a result slotting process on the hollow screw body more difficult, high production costs, it is preferable for the welding program block in the embodiment is fixed on the hollow screw body.

[0032] 为了提高使用方便性,上述第一环体21与所述第二环体22优选为共面设置。 [0032] In order to improve ease of use, the first ring member 21 and the second ring member 22 is preferably arranged to be coplanar. 显然地,第一环体21与第二环体22所在的平面也可以成适当的角度,这应根据实际使用情况确定,在此不作限定。 Obviously, where the first plane of the ring member and the second ring 2221 may be an appropriate angle, which should be determined based on actual usage, this is not limited.

[0033] 具体地,上述第一环体21的外径为7mm,边宽为1.5mm,所述第一通孔211的孔径3.8mm,所述第二环体22的外径为2.3mm,所述第二通孔221的孔径为1.4mm,所述空心钉本体I的螺纹段的外径为4.0mm0该尺寸规格能够更加适合用于固定尺骨鹰嘴骨折,从而提高了空心钉组件的适用性。 [0033] Specifically, the outer diameter of the first ring member 21 is 7mm, edge width of 1.5mm, the diameter of the first through hole 211 is 3.8mm, the outside diameter of the second ring 22 is 2.3mm, the second through hole 221 a pore size of 1.4mm, the outer diameter of the hollow screw thread segments to 4.0mm0 body I can be more adapted to the dimensions for fixing olecranon fractures, thereby improving the hollow screw assembly suitable sex. 从理论上来讲,上述各参数也可根据实际使用情况稍作改变,以不影响使用为准。 Theoretically, the above parameters may vary somewhat based on actual usage, so as not to affect the subject.

[0034] 需要指出的是,文中所述“第一、第二、第三”等序数词是为了区分相同名称的不同结构,仅为了描述方便,不表示某种顺序,更不应理解为任何限定。 [0034] It should be noted that herein the "first, second, third," etc. are used in order to distinguish between different structures of the same name, description for convenience only and does not indicate a certain sequence, but should not be understood as any limited.

[0035] 以上对本实用新型所提供的用于固定尺骨鹰嘴骨折的空心钉组件进行了详细介绍。 [0035] The above components of the present invention the hollow screw is provided for fixing the new olecranon fractures described in detail. 本文中应用了具体个例对本实用新型的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本实用新型的方法及其核心思想。 Herein through specific examples of the principles of the present invention and embodiments are set forth in the above described embodiments are only for assisting understanding of the present invention a method and core ideas. 应当指出,对于本技术领域的普通技术人员来说,在不脱离本实用新型原理的前提下,还可以对本实用新型进行若干改进和修饰,这些改进和修饰也落入本实用新型权利要求的保护范围内。 It should be noted that those of ordinary skill in the art, in the present invention without departing from the principles of the premise, may also be several improvements and modifications of the present invention is carried out, and these improvements and modifications also fall within the claims of the present invention range.

Claims (8)

1.一种用于固定尺骨鹰嘴骨折的空心钉组件,包括末段开设有螺纹的空心钉本体(I),和套设于所述空心钉本体(I)、并绕所述空心钉本体(I)的轴线周向转动的垫片(2),其特征在于,所述垫片(2)包括开设有第一通孔(211)的第一环体(21)和开设有第二通孔(221)的第二环体(22),所述第二通孔(221)的孔径小于所述第一通孔(211)的孔径,所述第二通孔(221)内穿有钛缆(4);所述空心钉本体(I)与所述垫片(2)之间设置有轴向阻挡结构,所述垫片(2)在所述轴向阻挡结构的作用下轴向固定安装于所述空心钉本体(I)。 A hollow screw fixation assembly ulnar olecranon fractures, comprising a threaded end section defines a hollow screw body (the I), and a sleeve disposed on the hollow screw body (the I), and around the hollow screw body (I) the axis of rotation of the circumferential direction of the spacer (2), characterized in that said gasket (2) comprises a through hole defines a first (211) a first ring member (21) and defines a second through hole (221) of the second ring (22), diameter of the second through hole (221) is smaller than the first through hole (211) aperture, said second through holes (221) pierced with a titanium cable (4); said barrier structure is provided with an axial hollow screw between the body (I) and the spacer (2), the spacer (2) under the action of a barrier structure in said axially fixed axially mounted on the hollow screw body (I).
2.根据权利要求1所述的空心钉组件,其特征在于,所述轴向阻挡结构包括设置于所述空心钉本体外端的螺帽(3),和安装于所述空心钉本体、并与所述螺帽具有预定轴向距离的固定块(5),所述第一环体(21)套设于所述空心钉本体(I),并设置于所述螺帽(3)与所述固定块(5)之间,所述螺帽(3)的外径和所述固定块(5)的外径均大于所述第一通孔(211)的孔径。 The hollow screw assembly according to claim 1, characterized in that said blocking structure comprises axially disposed within the hollow outer end of the staple of this nut (3), and mounted on the hollow screw body, and with said nut having a fixing block (5) of a predetermined axial distance, said first ring (21) sleeved on said hollow screw body (the I), and provided on the nut (3) and the between the fixing block (5), the outer diameter of the nut (3) and the outer diameter of the fixing block (5) is greater than the first through hole (211) aperture.
3.根据权利要求1所述的空心钉组件,其特征在于,所述定位块(5)沿所述空心钉本体(I)的周向延伸一周。 The hollow screw assembly according to claim 1, wherein said positioning block (5) along the hollow screw body (I) of the circumferentially extending week.
4.根据权利要求1所述的空心钉组件,其特征在于,所述定位块(5)焊接于所述空心钉本体⑴的外周壁。 The hollow screw assembly according to claim 1, wherein said positioning block (5) is welded to said hollow screw body ⑴ peripheral wall.
5.根据权利要求1至4任一项所述的空心钉组件,其特征在于,所述第一环体(21)与所述第二环体(22)共面设置。 1 to 5. The hollow screw assembly according to any of claims 1-4, characterized in that, (21) (22) coplanar with said first ring and said second ring is provided.
6.根据权利要求5所述的空心钉组件,其特征在于,所述第一环体(21)的外径为7mm、边宽为1.5mm,所述第一通孔(211)的孔径3.8mm。 The hollow screw assembly of claim 5, wherein an outer diameter of said first ring member (21) is 7mm, edge width of 1.5mm, the diameter of the first through hole (211) 3.8 mm.
7.根据权利要求5所述的空心钉组件,其特征在于,所述第二环体(22)的外径为2.3mm,所述第二通孔(221)的孔径为1.4mm。 The hollow screw assembly as claimed in claim 5, characterized in that the outer diameter of the second ring member (22) is 2.3mm, pore size of the second through hole (221) is 1.4mm.
8.根据权利要求1至4任一项所述的空心钉组件,其特征在于,所述空心钉本体(I)的螺纹段外径为4.0mm。 According to claim 1 to the hollow screw assembly according to any of 4, characterized in that said hollow screw body (I) of the outer diameter of the thread segments 4.0mm.
CN 201420472099 2014-08-20 2014-08-20 Cannulated screw assembly for fixing olecranal fracture CN204049821U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105193484A (en) * 2015-11-06 2015-12-30 上海凯利泰医疗科技股份有限公司 Integrated fixing device for olecranal fracture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105193484A (en) * 2015-11-06 2015-12-30 上海凯利泰医疗科技股份有限公司 Integrated fixing device for olecranal fracture
CN105193484B (en) * 2015-11-06 2017-09-29 上海凯利泰医疗科技股份有限公司 A kind of integrated fixing device of olecranal fracture

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