CN119074324A - A expandable fusion device with memory alloy structure - Google Patents
A expandable fusion device with memory alloy structure Download PDFInfo
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- CN119074324A CN119074324A CN202411285856.8A CN202411285856A CN119074324A CN 119074324 A CN119074324 A CN 119074324A CN 202411285856 A CN202411285856 A CN 202411285856A CN 119074324 A CN119074324 A CN 119074324A
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- Prior art keywords
- memory alloy
- fusion device
- groove
- limit block
- worm
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Classifications
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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
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
- A61F2002/30092—Properties of materials and coating materials using shape memory or superelastic materials, e.g. nitinol
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
本发明涉及融合器领域，涉及一种带有记忆合金结构的可撑开融合器，本发明包括转动连接的融合器主体、记忆合金板和升降调节组件，记忆合金板设置于融合器主体的外端面，记忆合金板在冷却状态下两端贴合设置于融合器主体的侧端面，融合器主体内部设有套筒，升降调节组件包括限位块、驱动杆、涡轮和蜗杆，驱动杆上下两端螺纹配合设置于套筒内，限位块中部套设于驱动杆中部，限位块上下滑动设置于套筒端面，涡轮固定设置于驱动杆中部且位于限位块内部，蜗杆转动设置于限位块内且与涡轮啮合连接，通过记忆合金板与融合器的配合使用，在手术前置于冷水中，有利于缩小融合器植入体积，通过融合器撑开角度的调节，使融合器与脊椎间隙进行更好的融合。
The present invention relates to the field of fusion devices, and relates to an expandable fusion device with a memory alloy structure. The present invention comprises a fusion device body, a memory alloy plate and a lifting and adjusting component which are rotatably connected. The memory alloy plate is arranged on the outer end surface of the fusion device body. Both ends of the memory alloy plate are fitted and arranged on the side end surfaces of the fusion device body in a cooling state. A sleeve is arranged inside the fusion device body. The lifting and adjusting component comprises a limit block, a driving rod, a turbine and a worm. The upper and lower ends of the driving rod are threadedly arranged in the sleeve. The middle part of the limit block is sleeved in the middle part of the driving rod. The limit block is slidably arranged on the end surface of the sleeve up and down. The turbine is fixedly arranged in the middle part of the driving rod and is located inside the limit block. The worm is rotatably arranged in the limit block and meshed with the turbine. The memory alloy plate is used in conjunction with the fusion device, and the device is placed in cold water before surgery, which is beneficial to reducing the implant volume of the fusion device. By adjusting the expansion angle of the fusion device, the fusion device and the spinal space are better fused.
Description
Technical Field
The invention relates to the field of fusion devices, in particular to a spreadable fusion device with a memory alloy structure.
Background
For patients suffering from congenital diseases, degenerative diseases, benign and malignant tumors, spinal fracture and the like of the spinal column and the fusion problems of thoracic vertebrae, lumbar vertebrae and cervical vertebrae, the fusion device is implanted between intervertebral discs or vertebral bodies in an operation mode, so that bone fusion is formed between the vertebral bodies, and the treatment effect is achieved. The minimally invasive spinal surgery method which has been developed in the last decade greatly shortens the healing period of the surgery and effectively reduces the surgery risk, the surgery treatment mode is divided into an open internal fixation treatment and a minimally invasive surgery method, wherein the open internal fixation treatment causes large surgery wounds, the recovery period is long, patients experience more pain, the minimally invasive spinal surgery method which has been developed in the last decade greatly shortens the healing period of the surgery and effectively reduces the surgery risk, and therefore, how to reduce the implantation cross-sectional area of a fusion device as much as possible to reduce surgery wounds and improve the recovery speed of patients is the problem which needs to be solved at present.
The existing fusion device has single end face shape, can not be adapted according to the intervertebral spaces of different ethnicities, crowds and segments (cervical vertebra, thoracic vertebra and lumbar vertebra), has fixed height and angle, has small upper and lower lamination final area, and is not beneficial to the rapid rehabilitation of patients.
Disclosure of Invention
The invention provides a spreadable fusion device with a memory alloy structure for solving the problems in the prior art.
The invention discloses a spreadable fusion device with a memory alloy structure, which comprises two sets of fusion device bodies, a memory alloy plate and a lifting adjusting assembly, wherein the fusion device bodies are rotationally connected, the memory alloy plate is arranged on the outer end face of the fusion device bodies, two ends of the memory alloy plate are attached to the side end faces of the fusion device bodies in a cooling state, a threaded sleeve is arranged in the fusion device bodies, the lifting adjusting assembly comprises a limiting block, a driving rod, a turbine and a worm, the upper end and the lower end of the driving rod are in threaded fit with each other and are arranged in the sleeve, the middle part of the limiting block is sleeved in the middle part of the driving rod, the limiting block is arranged on the end faces of the sleeve in a sliding mode up and down, the turbine is fixedly arranged in the middle part of the driving rod and is positioned in the limiting block, and the worm is rotationally arranged in the limiting block and is in meshed connection with the turbine.
Further improvement, the sleeve outside symmetry sets up vertical spout, the stopper upper and lower symmetry is provided with vertical spout complex direction draw runner.
Further improvement, the driving rod comprises a screw rod part, an internal thread groove is formed in the sleeve, and the screw rod part is connected with the internal thread groove in a matched mode.
Further improvement, be equipped with the spacing groove one that is located the turbine upper and lower both sides on the actuating lever, the stopper be equipped with spacing groove one complex inner tube spacing groove one, the worm middle part is equipped with the interior hexagonal groove, the worm outer tip is equipped with spacing groove two, be equipped with the worm holding tank on the stopper, worm holding tank tip be equipped with spacing groove two complex inner tube spacing groove two.
Further improvement, be equipped with the buckle on the fusion ware main part terminal surface, the memory alloy board lower extreme is equipped with the joint groove that matches with the buckle, the joint groove is used for assembling the memory alloy board of different specifications.
According to a further improvement, two groups of buckles on the fusion device main body are symmetrically arranged, and the end faces of the buckles are half-T-shaped sections.
Further improved, the upper and lower groups of memory alloy strips on the memory alloy plates are arranged in a staggered manner, and tooth-shaped memory alloy parts are arranged on the memory alloy strips.
Further improvement, the inside cavity of fusion ware main part sets up, fusion ware main part terminal surface is equipped with the through-hole with memory alloy board intercommunication.
Compared with the prior art, the expandable fusion device with the memory alloy structure has the beneficial effects that:
1. according to different ethnicities, crowds and intervertebral spaces of segments (cervical vertebra, thoracic vertebra and lumbar vertebra), memory alloy plates with proper specifications are selected, flexibly replaced, the matching degree is obviously improved, physiological anatomical forms are restored, and obvious clinical significance is brought;
2. Through the cooperation of the memory alloy plate and the fusion device, the two sides of the memory alloy plate are deformed before operation and placed in cold water, thereby being beneficial to reducing the implantation volume of the fusion device, reducing the operation wound and improving the recovery speed of a patient;
3. The turbine worm is matched with the threaded connection structure of the driving rod and the sleeve, so that the angle and the height of the fusion cage are adjusted, the fusion cage and the spine clearance are better fused, and meanwhile, the turbine worm is adjusted to have self-locking property, so that the stability of the fusion cage in expanding is ensured;
4. and after the memory alloy plate is placed, the final area of the upper and lower lamination plates is further enlarged, so that the risk of sedimentation is reduced.
Drawings
FIG. 1 is a schematic view of the structure of the present invention
FIG. 2 is a schematic view of the structure of the present invention in a closed state
FIG. 3 is a schematic view of the internal structure of the present invention
FIG. 4 is a schematic view of a part of a lifting adjusting assembly according to the present invention
FIG. 5 is a schematic view of a part of a lifting adjusting assembly according to the present invention
FIG. 6 is a schematic view showing the structure of the memory alloy plate of the present invention
In the figure, a 1-fusion device main body, a 11-sleeve, a 111-vertical sliding groove, a 12-internal thread groove, a 13-buckle, a 2-memory alloy plate, a 21-clamping groove, a 22-memory alloy strip, a 23-tooth-shaped memory alloy part, a 3-lifting adjusting component, a 31-limiting block, a 311-inner cylinder limiting groove I, a 312-worm accommodating groove, a 313-inner cylinder limiting groove II, a 32-driving rod, a 33-turbine, a 34-worm, a 341-inner hexagonal groove, a 342-limiting groove II, a 35-screw rod part, a 36-limiting groove I, a 37-guiding sliding strip and a 4-through hole.
Detailed Description
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The technical scheme of the invention is further described below with reference to the embodiments and the accompanying figures 1-6.
Example 1
The utility model provides a can strut fusion ware with memory alloy structure, includes two sets of fusion ware main part 1, memory alloy board 2 and the lift adjustment subassembly 3 that rotate the connection, memory alloy board 2 sets up in the outer terminal surface of fusion ware main part 1, memory alloy board 2 both ends laminating sets up in the side terminal surface of fusion ware main part 1 under the cooling state, the inside threaded sleeve 11 that is equipped with of fusion ware main part 1, lift adjustment subassembly 3 includes stopper 31, actuating lever 32, turbine 33 and worm 34, actuating lever 32 upper and lower both ends screw thread fit sets up in sleeve 11, stopper 31 middle part cover is located actuating lever 32 middle part, stopper 31 slides from top to bottom and sets up in sleeve 11 terminal surface, turbine 33 is fixed to be set up in actuating lever 32 middle part and is located stopper 31 inside, worm 34 rotates and sets up in stopper 31 and be connected with turbine 33 meshing.
As shown in figures 1-6, the invention is based on the use principle that the rear end sides of the upper and lower fusion device main bodies 1 are matched through pin connection, deformation is generated before operation when the fusion device main bodies are placed in ice water, two ends of the upper and lower memory alloy plates 2 are attached to the side end faces of the fusion device main bodies 1, the implantation volume of the fusion device is reduced, temperature recovery after intervertebral implantation is facilitated, shape recovery of the upper and lower memory alloy plates 2 is achieved, a worm 34 in a rotating limit block 31 can be used for driving the worm wheel 33 to rotate, the worm wheel 33 rotates to drive a driving rod 32 to rotate, and as the upper and lower ends of the driving rod 32 are in threaded fit connection with the sleeve 11, the limit block 31 is arranged on the end faces of the sleeve 11 in a sliding mode up and down, the height of the sleeve 11 on the driving rod 32 is adjusted, and finally the height of the fusion device main bodies 1 can be adjusted, so that the expansion is achieved.
The shape recovery and expansion after implantation position reach sufficient mechanical stability and better biological bone grafting fusion environment, and the turbine worm is matched with the threaded connection of the driving rod and the sleeve to realize the adjustment of the expansion angle of the fusion device, so that the fusion device and the spine clearance are better fused, and the adjustment of the turbine worm has self-locking property and ensures the expansion stability of the fusion device.
As a further preferred embodiment, the outer side of the sleeve 11 is symmetrically provided with a vertical sliding groove 111, and the limiting block 31 is vertically symmetrically provided with a guiding sliding strip 37 matched with the vertical sliding groove 111.
As shown in fig. 4, the rotation of the stopper 31 is restricted by the guide slide bar 37 cooperating with the vertical chute 111.
As a further preferred embodiment, the driving rod 32 includes a screw rod portion 35, the sleeve 11 is internally provided with an internal thread groove 12, and the screw rod portion 35 and the internal thread groove 12 are cooperatively connected.
As a further preferred embodiment, the driving rod 32 is provided with a first limit groove 36 located on the upper side and the lower side of the turbine 33, the limit block 31 is provided with a first inner barrel limit groove 311 matched with the first limit groove 36, the middle part of the worm 34 is provided with a second inner hexagonal groove 341, the outer end part of the worm 34 is provided with a second limit groove 342, the limit block 31 is provided with a worm accommodating groove 312, and the end part of the worm accommodating groove 312 is provided with a second inner barrel limit groove 313 matched with the second limit groove 342.
As shown in fig. 4 and 5, the first inner cylinder limit groove 311 of the limit block 31 is matched with the first limit groove 36 of the driving rod 32 to restrict the freedom degrees of the limit block 31 in the vertical and horizontal directions and allow the driving rod 32 to rotate, the second inner cylinder limit groove 313 of the limit block 31 is matched with the second limit groove 342 of the worm 34 to restrict the freedom degrees of the limit block 31 in the vertical and horizontal directions and allow the worm 34 to rotate, and the inner hexagonal groove 341 is convenient for adjusting the rotation of the worm 34 to enable the turbine 33 matched with the worm 34 to rotate.
As a further preferred embodiment, the end face of the fusion cage body 1 is provided with a buckle 13, the lower end of the memory alloy plate 2 is provided with a clamping groove 21 matched with the buckle 13, and the clamping groove 21 is used for assembling memory alloy plates 2 with different specifications.
As shown in fig. 6, the fastener 13 of the fusion cage body 1 enables the memory alloy plate 2 to be in sliding fit along the fastening groove 21, and the memory alloy plate has different widths and surface states and different model specifications, so that the fusion cage is convenient to replace.
As a further preferred embodiment, two groups of buckles 13 on the fusion cage body 1 are symmetrically arranged, and the end faces of the buckles 13 are half-T-shaped sections. The memory alloy plates 2 with different widths can be replaced according to the requirements by the buckles 13 with the half T-shaped cross sections.
As a further preferred embodiment, the memory alloy strips 22 on the memory alloy plate 2 are staggered, and tooth-shaped memory alloy portions 23 are arranged on the memory alloy strips 22.
As shown in fig. 2, the memory alloy strips 22 on the memory alloy plates 2 are adhered to the two ends of the fusion cage body 1 in a cooled state, and the memory alloy strips 22 on the upper and lower groups of memory alloy plates 2 are staggered, so as to be beneficial to reducing the implantation width, and the tooth-shaped memory alloy parts 23 arranged at intervals are beneficial to being implanted between vertebrae and preventing sliding.
As a further preferable embodiment, the fusion device body 1 is hollow, the end surface of the fusion device body 1 is provided with a through hole 4 communicated with the memory alloy plate 2, and the through hole 5 is used for providing a blood-conveying hole, so that bone growth is promoted and the fusion effect is improved.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411285856.8A CN119074324A (en) | 2024-09-13 | 2024-09-13 | A expandable fusion device with memory alloy structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411285856.8A CN119074324A (en) | 2024-09-13 | 2024-09-13 | A expandable fusion device with memory alloy structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119074324A true CN119074324A (en) | 2024-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411285856.8A Pending CN119074324A (en) | 2024-09-13 | 2024-09-13 | A expandable fusion device with memory alloy structure |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2617326Y (en) * | 2003-01-27 | 2004-05-26 | 昌耘冰 | Interspinous fusion device made of shape memory alloy |
| CN204839837U (en) * | 2015-02-06 | 2015-12-09 | 潘滔 | Automatic locking formula interbody fusion cage that struts of memory alloy |
| CN110013366A (en) * | 2019-04-04 | 2019-07-16 | 珠海维尔康生物科技有限公司 | One kind can the height-adjustable Invasive lumbar fusion device of bone grafting |
| CN216257665U (en) * | 2021-12-03 | 2022-04-12 | 南京飞渡医疗器械有限公司 | Customized interbody fusion cage structure |
| CN115381606A (en) * | 2021-11-16 | 2022-11-25 | 上海凯利泰医疗科技股份有限公司 | Angle-expandable intervertebral fusion cage and spine implantation system thereof |
| CN116509604A (en) * | 2023-04-04 | 2023-08-01 | 浙江德康医疗器械有限公司 | Adjustable micro-motion interbody fusion cage |
-
2024
- 2024-09-13 CN CN202411285856.8A patent/CN119074324A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2617326Y (en) * | 2003-01-27 | 2004-05-26 | 昌耘冰 | Interspinous fusion device made of shape memory alloy |
| CN204839837U (en) * | 2015-02-06 | 2015-12-09 | 潘滔 | Automatic locking formula interbody fusion cage that struts of memory alloy |
| CN110013366A (en) * | 2019-04-04 | 2019-07-16 | 珠海维尔康生物科技有限公司 | One kind can the height-adjustable Invasive lumbar fusion device of bone grafting |
| CN115381606A (en) * | 2021-11-16 | 2022-11-25 | 上海凯利泰医疗科技股份有限公司 | Angle-expandable intervertebral fusion cage and spine implantation system thereof |
| CN216257665U (en) * | 2021-12-03 | 2022-04-12 | 南京飞渡医疗器械有限公司 | Customized interbody fusion cage structure |
| CN116509604A (en) * | 2023-04-04 | 2023-08-01 | 浙江德康医疗器械有限公司 | Adjustable micro-motion interbody fusion cage |
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