WO2022174560A1 - 一种可撑开的椎间盘终板单侧刮削处理器 - Google Patents

一种可撑开的椎间盘终板单侧刮削处理器 Download PDF

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Publication number
WO2022174560A1
WO2022174560A1 PCT/CN2021/111140 CN2021111140W WO2022174560A1 WO 2022174560 A1 WO2022174560 A1 WO 2022174560A1 CN 2021111140 W CN2021111140 W CN 2021111140W WO 2022174560 A1 WO2022174560 A1 WO 2022174560A1
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Prior art keywords
unilateral
scraper
ejector rod
intervertebral disc
sleeve
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PCT/CN2021/111140
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English (en)
French (fr)
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李维铭
刘宗会
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山东冠龙医疗用品有限公司
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Publication of WO2022174560A1 publication Critical patent/WO2022174560A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for

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  • the utility model relates to the field of medical instruments, in particular to a unilateral scraping processor for the end plate of an intervertebral disc that can be stretched.
  • Intervertebral disc fusion is known as the ultimate treatment for intervertebral disc disease. It is to fuse the upper and lower vertebral bodies of the diseased intervertebral disc.
  • the treatment method is to insert a metal or other implantable cage in the intervertebral space of the lesion to support it.
  • the upper and lower vertebral bodies are then bone grafted, and finally the upper and lower vertebral bodies are fused.
  • a large proportion of the success or failure of this operation depends on whether the upper and lower endplates are processed in accordance with the requirements of fusion, that is, the cartilage layer above the cortical bone must be scraped off, and the cortical bone must be protected so as not to remove too much and affect the strength of the vertebral body.
  • the spoon-shaped curette and the formed spatula used in clinic are all integrated, that is, the spatula and the shaft are integrally connected, so that the scraping is hard scraping.
  • the size is not enough and the scraping is not thorough. This is the current state of the art as it exists.
  • the utility model provides a unilateral scraping processor for the endplate of the intervertebral disc that can be stretched.
  • a unilateral scraping processor for the end plate of the intervertebral disc that can be stretched comprising a sleeve, an ejector rod and a unilateral scraper.
  • a cavity in the direction of the sleeve the ejector rod penetrates into the cavity of the sleeve and can move along the cavity, the front part of the ejector rod is connected with the unilateral scraper through the connecting rod assembly, and the rear part of the ejector rod is connected with the unilateral scraper.
  • a thread is provided, and a nut is connected to the rear thread of the ejector rod. By rotating the nut, the ejector rod can be driven to move forward and backward, thereby realizing the opening and retracting of the unilateral scraper. Excessive excision.
  • the front part of the sleeve is provided with a scraper joint, and the single-sided scraper is hinged on the scraper joint. To ensure the connection strength of the unilateral scraper, it is more beneficial for the ejector rod to drive the movement of the unilateral scraper.
  • the connecting rod assembly includes a pin shaft and a support arm, the front part of the ejector rod is provided with a push head, and the push head is hinged with one end of the support arm through the pin shaft after passing through the scraper joint, and the support arm The other end is hinged with the one-sided scraper.
  • the forward and backward movement of the ejector rod is converted into the up and down movement of the unilateral scraper.
  • the front part of the unilateral scraper has an upwardly curved cutting edge, and the cutting edge has an arc, forming an arc for forming a match with the intervertebral endplate, which is beneficial to scraping the intervertebral endplate and avoids the cutting edge cutting into the cartilage. deep.
  • the rear part of the single-sided scraper is hinged with the scraper joint through a pin
  • the lower part of the single-sided scraper is provided with a hinge groove
  • the front end of the support arm has an arc
  • the front end of the support arm is installed in the hinge groove. middle.
  • the structure is simple, easy to assemble and easy to drive.
  • a handle is provided at the rear of the sleeve. It is convenient to hold and operate.
  • the nut is rotatably mounted on the handle, the rear of the ejector rod passes through the nut, a pin is installed on the handle, the pin is located at the rear of the nut, the pin is inserted into the ejector rod and restricts Rotation of the top rod.
  • the ejector rod can move in a straight line without rotating.
  • the cutting edge is a row of tooth-like structures. In order to facilitate the scraping of the intervertebral endplate with the scraper.
  • the utility model has the following advantages:
  • This solution provides a unilateral scraping processor for the end plate of the intervertebral disc that can be stretched.
  • the size of the unilateral scraper is smaller than the intervertebral space when the unilateral scraper is in a retracted state.
  • the pusher at the front end of the ejector rod drives the unilateral scraper to open through the hinge structure until the cutting edge is in contact with the end plate.
  • the doctor determines the depth of scraping by tightening the nut, and moves the handle back and forth to complete scraping. Repeat the above actions after moving left and right.
  • the entire intervertebral disc can be cleaned. Since the cutting edge is tooth-shaped and has a similar arc to the end plate, the depth of the cutting edge into the cartilage will not exceed the height of the teeth.
  • the scraping position is controlled by the doctor and can be completed in a few operations. After scraping, the scraped tissue can be sucked out to install the bone graft and the cage.
  • FIG. 1 is a front view of a specific embodiment of the present invention.
  • FIG. 2 is a perspective view of the front section of the specific embodiment of the present invention.
  • FIG. 3 is a schematic diagram showing the state of the specific embodiment of the present invention when the scraper is not opened.
  • FIG. 4 is a schematic diagram showing the radian of the cutting edge according to the specific embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of the rear section of the specific embodiment of the present invention.
  • the present invention provides a unilateral scraping processor of the intervertebral disc endplate that can be stretched, including a sleeve 5 , a push rod 4 , a handle 9 and a unilateral scraper 2 , the sleeve 5 A cavity is arranged along its longitudinal direction, a scraper joint 3 is installed at the front end of the sleeve 5, a handle 9 is installed at the rear end of the sleeve 5, and the ejector rod 4 penetrates into the cavity of the sleeve 5 and can move along the cavity , the front part of the ejector rod 4 is connected with the unilateral scraper 2 through a connecting rod assembly, and the unilateral scraper 2 is located in front of the scraper joint 3, wherein the connecting rod assembly includes a pin 6 and a support arm 1, and the front part of the ejector rod 4 is provided with There is a push head 4 , the push head 4 is hinged
  • the rear part of the single-sided scraper 2 is hinged with the scraper joint 3 through the pin shaft 6, the lower part of the single-sided scraper 2 is provided with a hinge groove, the front end of the support arm 1 has an arc, and the front end of the support arm 1 is installed in the hinge groove.
  • the front part of the unilateral scraper 2 has an upwardly curved cutting edge, and the cutting edge is a row of tooth-like structures, forming an arc for forming a matching with the intervertebral endplate, which is conducive to scraping the intervertebral endplate and avoids the cutting edge cutting into Cartilage is too deep.
  • a further improvement scheme also has a thread provided at the rear of the ejector rod 4, and a nut 7 is connected to the rear thread of the ejector rod 4, the nut 7 is rotatably mounted on the handle 9, and the rear part of the ejector rod 4 is threaded.
  • a pin 8 is installed on the handle 9, the pin 8 is located at the rear of the nut 7, the pin 8 is inserted into the ejector rod 4 and restricts the rotation of the ejector rod 4, and the ejector rod can move in a straight line by twisting the nut without turning.
  • the size of the unilateral scraper 2 in the retracted state is smaller than the intervertebral space.
  • the nut 7 on the handle 9 is rotated to drive the ejector rod 4 to move forward, and the pusher 4 at the front end of the ejector rod 4 drives the unilateral scraper through the hinge structure. 2. Open until the cutting edge is in contact with the end plate. The doctor determines the depth of scraping by tightening the nut 7, and moves the handle 9 back and forth to complete the scraping. After moving left and right, repeat the above action, and the entire intervertebral disc can be cleaned.
  • the mouth is tooth-shaped and has a similar arc to the endplate.
  • the depth of the cutting edge into the cartilage will not exceed the height of the teeth.
  • the scraping position is controlled by the doctor. The scraping can be completed in a few operations, and the scraped tissue can be sucked out.
  • the bone graft and cage can be installed.

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  • Orthopedic Medicine & Surgery (AREA)
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Abstract

一种可撑开的椎间盘终板单侧刮削处理器，包括套管（5）、顶杆（4），手柄（9）以及一个单侧刮刀（2），套管（5）中沿其纵向方向设置有空腔，顶杆（4）穿入到套管（5）的空腔中并可沿空腔移动，顶杆（4）的前部通过连杆组件与单侧刮刀（2）连接，顶杆（4）的后部设置有螺纹，并在顶杆（4）的后部螺纹上连接有螺母（7），螺母（7）安装在手柄（9）上。通过旋动螺母（7）可带动顶杆（4）前移和后退，进而实现单侧刮刀（2）的张开与收回，能够通过控制顶杆（4）的移动距离来控制单侧刮刀（2）张开程度，进而实现对切割深度的控制，避免过度切除。

Description

一种可撑开的椎间盘终板单侧刮削处理器 技术领域
本实用新型涉及医疗器械领域，尤其涉及一种可撑开的椎间盘终板单侧刮削处理器。
背景技术
椎间盘融合术被称作是治疗椎间盘疾病的终极治疗手段，是将病椎间盘上下两个椎体进行融合，治疗方法就是在病灶椎间隙内置入一个金属或其他可植入人体材料的融合器，支撑上下椎体，再进行植骨，最终时上下两个椎体融合。该手术的成败很大的比例在于上下终板是否处理的符合融合的要求，即要将骨皮质上面的软骨层刮削掉，又要保护好骨皮质不能去除太多而影响椎体的强度。
目前临床上使用的勺型刮匙以及成型的刮刀均为一体式的，即刮刀与杆身一体连接，使得刮削时为硬性刮削，硬性的刮削一个是容易过多的切除了终板，一个就是尺寸不够，刮削不彻底。这就是现有技术存在的现状。
因此，针对上述现有技术存在的现状，研发一种可撑开的椎间盘终板单侧刮削处理器是急需解决的问题。
实用新型内容
为了克服上述现有技术中的不足，本实用新型提供了一种可撑开的椎间盘终板单侧刮削处理器。
本实用新型为解决上述技术问题所采用的技术方案是：一种可撑开的椎间盘终板单侧刮削处理器，包括套管、顶杆以及一个单侧刮刀，所述套管中沿其纵向方向设置有空腔，所述顶杆穿入到套管的空腔中并可沿空腔移动，所述顶杆的前部通过连杆组件与单侧刮刀连接，所述顶杆的后部设置有螺纹，并在顶杆的后部螺纹上连接有螺母。通过旋动螺母可带动顶杆前移和后退，进而实现单侧刮刀的张开与收回，能够通过控制顶杆的移动距离来控制单侧刮刀张开程度，进而实现对切割深度的控制，避免过度切除。
进一步的，所述套管的前部设置有刮刀接头，所述单侧刮刀铰接在刮刀接头上。保证单侧刮刀的连接强度，更利于顶杆驱动单侧刮刀运动。
进一步的，所述连杆组件包括销轴和支撑臂，所述顶杆的前部设置有推头，所述推头穿过刮刀接头后通过销轴与支撑臂的一端铰接，所述支撑臂的另一端与单侧刮刀铰接。实现顶杆的前后移动转换为单侧刮刀的上下运动。
进一步的，所述单侧刮刀的前部具有向上弯曲的刃口，刃口具有弧度，形成用于与椎间终板形成配合的弧度，利于对椎间终板刮削、避免刃口切入软骨过深。
进一步的，所述单侧刮刀的后部通过销轴与刮刀接头铰接，所述单侧刮刀的下部设置有铰接槽，所述支撑臂的前端具有弧度，所述支撑臂的前端安装在铰接槽中。结构简单，便于装配，利于驱动。
进一步的，所述套管的后部设置有手柄。利于握持进行操作。
进一步的，螺母可转动地安装在手柄上，所述顶杆的后部穿过螺母，所述手柄上安装有销子，销子位于螺母的后部，所述销子插入到顶杆上并限制顶杆的转动。通过拧动螺母能够使顶杆沿直线运动而不发生转动。
进一步的，所述刃口为一排齿状结构。以利于刮刀对椎间终板的刮削。
从以上技术方案可以看出，本实用新型具有以下优点：
本方案提供了一种可撑开的椎间盘终板单侧刮削处理器，单侧刮刀在收缩状态时尺寸小于椎间隙，置入椎间隙后，旋转手柄上的螺母，带动顶杆向前移动，顶杆前端的推头通过铰链结构带动单侧刮刀撑开，直到刃口与终板接触，医生通过旋紧螺母，决定刮削的深度，把持手柄前后移动，完成刮削，左右移动后重复上述动作，即可将椎间盘整个处理干净，由于刃口为齿状并带有与终板相似的弧度，刃口切入软骨的深度不会超过齿的高度，刮削位置是由医生掌控，几次操作就可以完成刮削，将刮下的碎屑组织吸出即可进行植骨和融合器的安装。
附图说明
为了更清楚地说明本实用新型的技术方案，下面将对描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本实用新型具体实施方式的主视图。
图2为本实用新型具体实施方式前段部分的立体图。
图3为本实用新型具体实施方式显示刮刀未张开时的状态示意图。
[根据细则91更正 28.10.2021]　
[根据细则91更正 28.10.2021]　
图4为本实用新型具体实施方式显示刃口弧度的示意图。
[根据细则91更正 28.10.2021]　
图5为本实用新型具体实施方式后段部分的结构示意图。
图中，1、支撑臂，2、单侧刮刀，3、刮刀接头，4、顶杆，5、套管，6、销轴，7、螺母，8、销子，9、手柄。
具体实施方式
为使得本实用新型的目的、特征、优点能够更加的明显和易懂，下面将结合本具体实施例中的附图，对本实用新型中的技术方案进行清楚、完整地描述，显然，下面所描述的实施例仅仅是本实用新型一部分实施例，而非全部的实施例。基于本专利中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本专利保护的范围。
[根据细则91更正 28.10.2021]　
如图1至图5所示，本实用新型提供了一种可撑开的椎间盘终板单侧刮削处理器，包括套管5、顶杆4、手柄9以及一个单侧刮刀2，套管5中沿其纵向方向设置有空腔，套管5的前端安装有刮刀接头3，套管5的后端安装手柄9，顶杆4穿入到套管5的空腔中并可沿空腔移动，顶杆4的前部通过连杆组件与单侧刮刀2连接，单侧刮刀2位于刮刀接头3的前方，其中，连杆组件包括销轴6和支撑臂1，顶杆4的前部设置有推头4，推头4穿过刮刀接头3后通过销轴6与支撑臂1的一端铰接，支撑臂1的另一端与单侧刮刀2铰接。具体的，单侧刮刀2的后部通过销轴6与刮刀接头3铰接，单侧刮刀2的下部设置有铰接槽，支撑臂1的前端具有弧度，支撑臂1的前端安装在铰接槽中。
其中，单侧刮刀2的前部具有向上弯曲的刃口，刃口为一排齿状结构，形成用于与椎间终板形成配合的弧度，利于对椎间终板刮削、避免刃口切入软骨过深。
进一步的改进方案还有，顶杆4的后部设置有螺纹，并在顶杆4的后部螺纹上连接有螺母7，螺母7可转动地安装在手柄9上，顶杆4的后部穿过螺母7，手柄9上安装有销子8，销子8位于螺母7的后部，销子8插入到顶杆 4上并限制顶杆4的转动，通过拧动螺母能够使顶杆沿直线运动而不发生转动。
该处理器的构造及工作原理为：
单侧刮刀2在收缩状态时尺寸小于椎间隙，置入椎间隙后，旋转手柄9上的螺母7，带动顶杆4向前移动，顶杆4前端的推头4通过铰链结构带动单侧刮刀2撑开，直到刃口与终板接触，医生通过旋紧螺母7，决定刮削的深度，把持手柄9前后移动，完成刮削，左右移动后重复上述动作，即可将椎间盘整个处理干净，由于刃口为齿状并带有与终板相似的弧度，刃口切入软骨的深度不会超过齿的高度，刮削位置是由医生掌控，几次操作就可以完成刮削，将刮下的碎屑组织吸出即可进行植骨和融合器的安装。
本实用新型的说明书和权利要求书及上述附图中的术语“上”、“下”、“外侧”、“内侧”等(如果存在)是用于区别位置上的相对关系，而不必给予定性。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本实用新型的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本实用新型。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本实用新型的精神或范围的情况下，在其它实施例中实现。因此，本实用新型将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (8)

  1. 一种可撑开的椎间盘终板单侧刮削处理器，其特征在于，包括套管(5)、顶杆(4)以及一个单侧刮刀(2)，所述套管(5)中沿其纵向方向设置有空腔，所述顶杆(4)穿入到套管(5)的空腔中并可沿空腔移动，所述顶杆(4)的前部通过连杆组件与单侧刮刀(2)连接，所述顶杆(4)的后部设置有螺纹，并在顶杆(4)的后部螺纹上连接有螺母(7)。
  2. 如权利要求1所述的可撑开的椎间盘终板单侧刮削处理器，其特征在于，所述套管(5)的前部设置有刮刀接头(3)，所述单侧刮刀(2)铰接在刮刀接头(3)上。
  3. 如权利要求2所述的可撑开的椎间盘终板单侧刮削处理器，其特征在于，所述连杆组件包括销轴(6)和支撑臂(1)，所述顶杆(4)的前部设置有推头，所述推头穿过刮刀接头(3)后通过销轴(6)与支撑臂(1)的一端铰接，所述支撑臂(1)的另一端与单侧刮刀(2)铰接。
  4. 如权利要求3所述的可撑开的椎间盘终板单侧刮削处理器，其特征在于，所述单侧刮刀(2)的前部具有向上弯曲的刃口，所述刃口具有弧度。
  5. 如权利要求4所述的可撑开的椎间盘终板单侧刮削处理器，其特征在于，所述单侧刮刀(2)的后部通过销轴(6)与刮刀接头(2)铰接，所述单侧刮刀(2)的下部设置有铰接槽，所述支撑臂(1)的前端具有弧度，所述支撑臂(1)的前端安装在铰接槽中。
  6. 如权利要求1所述的可撑开的椎间盘终板单侧刮削处理器，其特征在于，所述套管(5)的后部设置有手柄(9)。
  7. 如权利要求6所述的可撑开的椎间盘终板单侧刮削处理器，其特征在于，所述螺母(7)可转动地安装在手柄(9)上，所述顶杆的后部穿过螺母，所述手柄(9)上安装有销子(8)，所述销子(8)插入到顶杆(4)上并限制顶杆(4)的转动。
  8. 如权利要求4所述的可撑开的椎间盘终板单侧刮削处理器，其特征在于，所述刃口为一排齿状结构。
PCT/CN2021/111140 2021-02-20 2021-08-06 一种可撑开的椎间盘终板单侧刮削处理器 WO2022174560A1 (zh)

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