CN112137776B - Fusion cage implantation holder - Google Patents

Fusion cage implantation holder Download PDF

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Publication number
CN112137776B
CN112137776B CN202011342581.9A CN202011342581A CN112137776B CN 112137776 B CN112137776 B CN 112137776B CN 202011342581 A CN202011342581 A CN 202011342581A CN 112137776 B CN112137776 B CN 112137776B
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CN
China
Prior art keywords
nut
fusion
limiting block
connecting rod
boss
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Active
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CN202011342581.9A
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Chinese (zh)
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CN112137776A (en
Inventor
胡善云
吕劲贤
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Zhuhai Weierkang Biotechnology Co ltd
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Zhuhai Weierkang Biotechnology Co ltd
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Priority to CN202011342581.9A priority Critical patent/CN112137776B/en
Publication of CN112137776A publication Critical patent/CN112137776A/en
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Publication of CN112137776B publication Critical patent/CN112137776B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4601—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses

Abstract

The invention discloses a fusion cage implantation holder which comprises a fusion cage joint, a nut, a limiting block and a connecting rod, wherein one end of the fusion cage joint is fixedly provided with a connecting piece for connecting a fusion cage, and the other end of the fusion cage joint is fixedly arranged on the connecting rod through the nut and the limiting block; a boss is arranged on the outer side of one end of the limiting block, a protrusion is arranged on the inner side of one end of the nut, one side of the limiting block, which contains the boss, is positioned in the nut, and the other end of the limiting block extends into the connecting rod or the fusion device joint from the nut; the internal thread of the nut is matched with the external thread of the connecting rod or the external thread of the fusion device joint. The fusion cage connector can be fixed in the holder, the connecting rod does not need to be replaced, the use cost is reduced, the applicability is improved, and the fusion cage connector is convenient to carry.

Description

Fusion cage implantation holder
Technical Field
The invention relates to the field of medical instruments, in particular to a fusion cage implantation holder.
Background
Common lumbar diseases mainly include intervertebral disc protrusion, lumbar spinal stenosis and degenerative lumbar instability, which cause a series of pains such as low back pain, lower limb pain, numbness and the like of patients, thereby seriously affecting the work and life of the patients. Lumbar fusion is one of the classic methods for treating lumbar instability and lumbar spondylolisthesis, and is an effective method for recovering the physiological radian of the spine, reconstructing the stability of the lumbar, correcting abnormal load modes and relieving clinical symptoms. The fusion rate of the intervertebral fusion is the highest, and the curative effect is the most exact. The lumbar interbody fusion Cage (Cage) is a medical implant specially used for lumbar interbody fusion, can play a role in supporting intervertebral space, and is widely applied clinically.
The traditional fusion cage is usually provided with a holder by one manufacturer, but the interface types and the sizes of the holders of different manufacturers are different, so that the original matched holders of different manufacturers are required to be used when the fusion cages of different manufacturers are required to be used, in practical application, the operation modes of the holders and the fusion cages are frequently changed, the use cost is increased, and the operation efficiency is influenced by factors such as different habits and operation inconsistency. Especially in the fusion process under the FEOLIF technology mirror, matched equipment and tools need to be prepared when using the fusion devices of different manufacturers, and the standardized operation is difficult to realize under different equipment and tools.
If the holder suitable for the fusion cage with different models can be designed, the use cost can be reduced, and the standardized operation of the operation is convenient.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a fusion cage implantation holder which can be adapted to fusion cages of different manufacturers, reduce the cost to the maximum extent, improve the practicability and is convenient to carry.
In order to achieve the purpose, the invention adopts the following technical scheme: a fusion cage implantation holder comprises a fusion cage joint, a nut, a limiting block and a connecting rod, wherein one end of the fusion cage joint is fixedly connected with a connecting piece of a fusion cage, and the other end of the fusion cage joint is fixedly arranged on the connecting rod through the nut and the limiting block;
a boss is arranged on the outer side of one end of the limiting block, a protrusion is arranged on the inner side of one end of the nut, one side of the limiting block, which contains the boss, is positioned in the nut, and the other end of the limiting block extends into the connecting rod or the fusion device joint from the nut; the internal thread of the nut is matched with the external thread of the connecting rod or the external thread of the fusion device joint.
Further, fuse the front end fixed connection that the ware connects and fuse the connecting piece of ware, fuse the rear end outside that the ware connects set up with nut internal thread assorted screw thread, the inside arch that sets up of nut rear end, the front end of stopper sets up the boss, in the stopper the boss with the arch contacts in the nut, just the arch is located in the stopper inside the nut, the stopper rear end extends to inside the connecting rod.
Furthermore, a boss in the limiting block is provided with a notch, and the rear end of the fusion device joint is provided with a lug matched with the notch; when the outer side threads at the rear end of the fusion device joint are screwed with the inner side threads of the nut, the notch in the limiting block and the lug in the fusion device joint are nested together.
Furthermore, the outer diameter of the position, without the boss, of the limiting block is smaller than the inner diameter of the connecting rod.
Further, fuse the front end that the ware connects and fix the connecting piece that is used for connecting the ware that fuses, the inside arch that sets up of nut front end, the stopper rear end sets up the boss, in the stopper boss with the arch contacts in the nut, just the arch is located in the stopper inside the nut, the stopper front end extends to fuse the ware and connect the rear end, the connecting rod front end outside set up with the inboard assorted screw thread of nut.
Furthermore, a boss in the limiting block is provided with a notch, and the front end of the connecting rod is provided with a lug matched with the notch; when the threads on the outer side of the front end of the connecting rod are screwed with the threads on the inner side of the nut, the notch in the limiting block and the convex block in the connecting rod are nested together.
Furthermore, the outer diameter of the position, without the boss, of the limiting block is smaller than the inner diameter of the fusion device joint.
Further, the nut, the limiting block, the connecting rod and the fusion device joint are all cylindrical.
The invention has the beneficial effects that: the fusion cage connector in the holder is detachable, so that when fusion cages of different types need to be used, the corresponding fusion cage connector can be fixed on the connecting rod, the whole holder does not need to be replaced, the use cost is reduced, the applicability is improved, and the holder is convenient to carry; when the connector of the fusion cage is replaced, the connector of the fusion cage is pulled out and replaced only by unscrewing the nut, so that the operation is simple and convenient; the invention ensures that the fusion cage is firmly fixed on the connecting rod through the matching of the external bulge and the internal boss and the matching of the notch and the lug, and ensures that fusion cages of different models are not influenced in the use process. The invention is particularly suitable for fusion under FEOLIF technology mirrors, greatly reduces matched equipment and tools when fuses of different manufacturers are used, and can be operated in a standardized way.
Drawings
FIG. 1 is an exploded view of a holder according to embodiment 1;
FIG. 2 is a schematic view showing the mounting of the holder according to embodiment 1;
FIG. 3 is a schematic view of a holder-mounted cage according to example 1;
FIG. 4 is a schematic sectional view of the holder according to embodiment 1;
FIG. 5 is a schematic view of the cage joint of the holder according to example 1;
FIG. 6 is a schematic view of a limiting block of the holder according to the present invention;
FIG. 7 is a schematic view of a nut of the holder of the present invention;
FIG. 8 is an exploded view of the holder according to embodiment 2;
FIG. 9 is a schematic view showing the mounting of the holder according to embodiment 2;
FIG. 10 is a cross-sectional view of the holder according to embodiment 2.
Reference numerals: 1 fuses the ware and connects, 2 stopper, 21 bosss, 22 breachs, 3 nuts, 31 archs, 4 connecting rods, 5 lugs.
Detailed Description
The invention will be further described with reference to the accompanying drawings and the detailed description below:
a fusion cage implantation holder comprises a fusion cage joint, a nut, a limiting block and a connecting rod, wherein one end of the fusion cage joint is fixedly connected with a connecting piece of a fusion cage, and the other end of the fusion cage joint is fixedly arranged on the connecting rod through the nut and the limiting block; the outer side of one end of the limiting block is provided with a boss, the inner side of one end of the nut is provided with a bulge, one side of the limiting block containing the boss is positioned in the nut, and the other end of the limiting block extends into the connecting rod or the fusion device joint from the nut; the internal thread of the nut is matched with the external thread of the connecting rod or the external thread of the fusion cage joint.
The nut, the limiting block, the connecting rod and the fusion device joint are all cylindrical. Each connecting rod can be connected with different types of fusion device joints through a nut and a limiting block, wherein the different types of fusion device joints refer to fusion device joints with the same connecting part of the rear end of the fusion device and the connecting rod, but different connecting parts of the front end and the fusion device; through changing the fusion cage joint, can be so that different kinds of fusion cages connect on the connecting rod, when using different producers fusion cages, can reduce supporting equipment and instrument by a wide margin to can realize standardized operation.
The invention is further illustrated by the following two specific examples:
example 1
Fuse the connecting piece that the front end fixed connection that the ware connects was fused in this embodiment, fuse the rear end outside that the ware connects and set up with nut internal thread assorted screw thread, and nut rear end inboard sets up the arch, and the front end of stopper sets up the boss, and the boss contacts with the arch in the boss and the nut in the stopper, and inside the boss was located the nut in the stopper, the stopper rear end extended to the connecting rod.
Fig. 1 shows a schematic diagram of an unassembled holder, and fig. 2 shows a schematic diagram of an assembled holder. When the holder is not assembled, the whole holder sequentially comprises a fusion device joint 1, a limiting block 2, a nut 3 and a connecting rod 4, wherein as shown in fig. 5, a connecting piece for connecting the fusion device is fixed at the front end of the fusion device joint 1, and threads matched with the inner side of the nut 3 are arranged on the outer side of the rear end of the fusion device joint 1; the rear end that fuses ware and connect 1 still sets up lug 5, and this lug can be two or more of symmetry, sets up in the end that fuses the ware and connects for with breach 22 phase-match in the stopper 2, and then fixed fusion ware connects 1. The type that fuses the ware and connect can be a plurality of, and the rear end shape structure that a plurality of fuses ware connect is all the same, and the connecting piece that is used for connecting the fusion ware of front end is different, and the fusion ware of different models can be connected to different connecting pieces, as shown in figure 3, when needs are changed the fusion ware, only need change earlier the fusion ware and connect, will correspond the fusion ware of model again and fix on the fusion ware connects can.
The rear end of the fusion device joint is provided with a limiting block and a nut in sequence. As shown in fig. 6, a boss 21 is arranged at the front end of the limiting block, and the outer diameter of the boss is larger than that of the part of the limiting block where the boss is not arranged; and a notch 22 is arranged at the position of the boss close to the fusion device joint, and the notch 22 is matched with the lug 5 at the tail end of the fusion device joint. As shown in fig. 7, the nut is internally provided with threads, and one end of the nut, which is far away from the fusion device joint, is internally provided with a bulge, which can be positioned on the inner side of the nut or positioned on the tail end section of the nut; and the outer diameter of the boss of the limiting block is larger than the inner diameter of the inner protrusion of the nut. Fig. 2 shows the holder after assembly, with the stop blocks completely embedded within the nuts and tie rods. As shown in figure 4, the boss in the limiting block is in contact with the protrusion in the nut, so that the boss in the limiting block is limited at the position of the protrusion in the nut, and the nut is prevented from slipping off from the front end of the limiting block. With continued reference to fig. 4, a recess is formed between the stop block boss and the connecting rod within the nut to limit axial movement of the nut, but radial movement of the nut is not affected. The protruding nut that is located in the stopper, inside the stopper rear end extended to the connecting rod to when fusing the screw thread that the ware connects the rear end outside and the inboard screw thread of nut and screwing up, the breach was in the stopper and fuses the ware and connect in the lug nestification together, fuses the ware connector and is restricted completely for the motion of stopper, thereby makes to fuse ware joint, stopper, nut and connecting rod and constitutes a reliable subassembly, plays the effect of controlling and fusing the ware.
Example 2
The holder connects 1 including fusing the ware in this embodiment, the nut 3, stopper 2 and connecting rod 4, wherein, fuse the ware and connect 1 front end fixed connection be used for connecting the connecting piece that fuses the ware, 3 front ends of nut set up protruding 31, 2 rear ends of stopper set up boss 21, protruding 31 contacts in 2 middle boss 21 of stopper and the nut 3, and protruding being located inside the nut in the stopper, the stopper front end extends to and fuses the ware and connects the rear end, the connecting rod front end outside sets up and the inboard assorted screw thread of nut.
Fig. 8 shows the structure of the unassembled holder, and fig. 9 shows the structure of the assembled holder. When the holder is not assembled, the whole holder sequentially comprises a fusion device joint, a nut, a limiting block and a connecting rod, wherein a connecting piece for connecting the fusion device is fixed at the front end of the fusion device joint, and a cavity is formed at the rear end of the fusion device joint; the type that fuses the ware and connect can be a plurality of, and the rear end shape structure that a plurality of fuses ware connect is all the same, and the connecting piece that is used for connecting the fusion ware of front end is different, and the fusion ware of different models can be connected to different connecting pieces, when needs change the fusion ware, only need change earlier the fusion ware and connect, will correspond the fusion ware of model again and fix on the fusion ware connects can.
The rear end of the fusion device joint is provided with a nut and a limiting block in sequence. As shown in fig. 8, a boss is arranged at the rear end of the limiting block, and the outer diameter of the boss is larger than that of the part of the limiting block where the boss is not arranged; and the position of the lug boss close to the connecting rod is provided with a notch which is matched with the lug at the front end of the connecting rod. The nut is internally provided with threads, one end of the nut, which is close to the fusion device joint, is provided with a bulge, the bulge can be positioned on the inner side of the nut and also can be positioned on the section of the front end of the nut, and the boss outer diameter of the limiting block is larger than the inner diameter of the bulge in the nut. The connecting rod outside sets up with the inboard assorted screw thread of nut, and the front end of connecting rod still sets up the lug, and this lug can be two or more of symmetry, sets up in the front end of connecting rod for with the stopper in the breach phase-match, and then fixed stopper.
Fig. 9 is the holder after assembly, and the stopper has been embedded inside the nut and the fusion device joint completely, and at this moment, as shown in fig. 10, the boss in the stopper contacts with the projection in the nut, so that the boss in the stopper is limited at the position of the projection in the nut, and the nut is prevented from slipping from the rear end of the stopper. With continued reference to fig. 10, a recess is formed between the stop boss on the interior of the nut and the cage fitting to limit axial movement of the nut, but radial movement of the nut is not affected. The protruding nut that is located of stopper middle standing is inside, and the stopper front end extends to and fuses in the cavity that the ware connects the rear end to when the screw thread in the connecting rod outside was screwed up with the inboard screw thread of nut, the lug nestification of breach and connecting rod front end is in the same place in the stopper, fuses the ware and connects the motion for the connecting rod and is restricted completely, thereby makes fusion ware joint, stopper, nut and connecting rod constitute a reliable subassembly, plays the effect of controlling fusion ware.
The universal spinal fusion cage implantation holder provided by the invention consists of a fusion cage connector, a limiting block, a nut and a connecting rod, when fusion cages of different manufacturers are used, only the fusion cage connector or the fusion cage connector assembly needs to be replaced without replacing other parts, the use effect is not influenced, and the use cost is greatly reduced. When the fusion cage connector is replaced, the fusion cage connector can be separated from the connecting rod for replacement only by unscrewing the nut and pulling out the fusion cage connector, so that the operation is simple and convenient, and the practicability is improved. The invention is particularly suitable for fusion under FEOLIF technology mirrors, greatly reduces matched equipment and tools when fuses of different manufacturers are used, and can be operated in a standardized way.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.

Claims (6)

1. A fusion cage implantation holder is characterized by comprising a fusion cage joint, a nut, a limiting block and a connecting rod, wherein one end of the fusion cage joint is fixedly connected with a connecting piece of a fusion cage, and the other end of the fusion cage joint is fixed on the connecting rod through the nut and the limiting block;
the front end of the fusion device joint is fixedly provided with a connecting piece used for connecting a fusion device, the outer side of the rear end of the fusion device joint is provided with a thread matched with the thread inside the nut, the inner part of the rear end of the nut is provided with a bulge, the front end of the limiting block is provided with a boss, the boss in the limiting block is contacted with the boss in the nut, the boss in the limiting block is positioned inside the nut, and the rear end of the limiting block extends into the connecting rod; a notch is arranged on a boss in the limiting block, and a lug matched with the notch is arranged at the rear end of the fusion device joint; when the outer side threads at the rear end of the fusion device joint are screwed with the inner side threads of the nut, the notch in the limiting block and the lug in the fusion device joint are nested together.
2. The cage implant holder of claim 1 wherein the stop has an outer diameter that is smaller than an inner diameter of the connecting rod at a location free of the boss.
3. The cage implant holder of claim 1 wherein the nut, stop, connecting rod and cage joint are cylindrical.
4. A fusion cage implantation holder is characterized by comprising a fusion cage joint, a nut, a limiting block and a connecting rod, wherein one end of the fusion cage joint is fixedly connected with a connecting piece of a fusion cage, and the other end of the fusion cage joint is fixed on the connecting rod through the nut and the limiting block;
the front end of the fusion device joint is fixedly provided with a connecting piece used for connecting a fusion device, a bulge is arranged inside the front end of the nut, a boss is arranged at the rear end of the limiting block, the boss in the limiting block is contacted with the bulge in the nut, the boss in the limiting block is positioned inside the nut, the front end of the limiting block extends to the rear end of the fusion device joint, and the outer side of the front end of the connecting rod is provided with a thread matched with the inner side of the nut; a boss in the limiting block is provided with a notch, and the front end of the connecting rod is provided with a lug matched with the notch; when the threads on the outer side of the front end of the connecting rod are screwed with the threads on the inner side of the nut, the notch in the limiting block and the convex block in the connecting rod are nested together.
5. The cage implant holder of claim 4 wherein the stop has an outer diameter that is smaller than an inner diameter of the cage coupler without the boss.
6. The cage implant holder of claim 4 wherein the nut, stop, connecting rod and cage joint are cylindrical.
CN202011342581.9A 2020-11-26 2020-11-26 Fusion cage implantation holder Active CN112137776B (en)

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Application Number Priority Date Filing Date Title
CN202011342581.9A CN112137776B (en) 2020-11-26 2020-11-26 Fusion cage implantation holder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011342581.9A CN112137776B (en) 2020-11-26 2020-11-26 Fusion cage implantation holder

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CN112137776A CN112137776A (en) 2020-12-29
CN112137776B true CN112137776B (en) 2021-03-19

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Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333697A (en) * 1980-07-14 1982-06-08 Sealectro Corporation Adapter for a coaxial connector
US7824427B2 (en) * 2007-01-16 2010-11-02 Perez-Cruet Miquelangelo J Minimally invasive interbody device
EP2419033B1 (en) * 2009-04-16 2015-12-16 Howmedica Osteonics Corp. Insertion handle for surgical implants
CN201498844U (en) * 2009-08-04 2010-06-02 富士康(昆山)电脑接插件有限公司 Coaxial adapter
CN105287024A (en) * 2014-07-01 2016-02-03 王光全 Oral medical instrument joint locking device
CN204852690U (en) * 2015-07-22 2015-12-09 广州东弘仪器开发有限公司 Adapter
CN205215454U (en) * 2015-11-26 2016-05-11 上海三友医疗器械有限公司 Fuse ware installing the system
CN108635085B (en) * 2018-05-04 2019-04-16 珠海康弘医疗科技有限公司 A kind of adjustable inflatable inter vertebral fusing device of implant angle
CN209236473U (en) * 2018-09-04 2019-08-13 创辉医疗器械江苏有限公司 Spinal fusion device implanting device
CN110420078A (en) * 2019-08-29 2019-11-08 上海凯利泰医疗科技股份有限公司 A kind of fusion device captures device
CN111839842B (en) * 2020-07-24 2022-10-04 北京市春立正达医疗器械股份有限公司 Surgical instrument for installing acetabular cup

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