CN113244027B - Minimally invasive fence type deformable fusion device used under endoscope - Google Patents
Minimally invasive fence type deformable fusion device used under endoscope Download PDFInfo
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- CN113244027B CN113244027B CN202110707490.9A CN202110707490A CN113244027B CN 113244027 B CN113244027 B CN 113244027B CN 202110707490 A CN202110707490 A CN 202110707490A CN 113244027 B CN113244027 B CN 113244027B
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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
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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
- A61F2/4603—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
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Abstract
The invention discloses a minimally invasive fence type deformable fusion cage used under an endoscope, which comprises a fusion cage and auxiliary components, wherein the fusion cage comprises a head end section, a tail end section, a plurality of middle end sections, a shaping pull rope and a shaping piece, the end sections are rotatably connected through a first pin shaft, pull rope through holes are formed in the end sections, one end of the shaping pull rope is fixed at the head end section, the other end of the shaping pull rope penetrates through the pull rope through hole in the middle end section and extends out of the pull rope through hole in the tail end section, the shaping piece is arranged on the tail end section and is used for fixing the shaping pull rope, and the auxiliary components are used for assisting in implanting the fusion cage into intervertebral spaces.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a minimally invasive fence type deformable fusion device used under an endoscope.
Background
The lumbar intervertebral disc degenerative disease is a common disease in clinical orthopedics, seriously affects the work and life of a patient, and may cause more serious conditions such as lumbar spondylolisthesis and the like as time goes on. Patients who are not effective for non-surgical treatment often require surgical treatment. In recent years, various types of intervertebral cages have been widely used in clinical practice. The function of the fusion cage is to promote the osseous fusion of the intervertebral, maintain the stability of the intervertebral space and keep the height of the intervertebral space, ensure the fusion rate to a certain extent and avoid some complications caused by the fusion cage. Conventional cages contain a small amount of bone and if the window is enlarged at the same time, the biomechanical strength of the fused segment may be reduced and the fusion rate is not high enough, which may cause more complications. The cage is a minimally invasive fence type deformable fusion device used under an endoscope, an inflatable balloon is arranged in an intervertebral, the cage type cage can be expanded to form the cage type cage, the intervertebral height is expanded, the contact surface with a bone end plate is increased, the operation wound is small, the supporting area is wide, the supporting is stable, the human body structure is fitted to the maximum extent, the inflammatory reaction after the operation is reduced, the original structure of the human body is protected to the maximum extent, a bone grafting groove is wide, the bone grafting effect is sufficient, and the fusion rate is ensured.
Disclosure of Invention
In order to solve the problems, the invention provides a minimally invasive fence type deformable fusion device used under an endoscope and a using method of the minimally invasive fence type deformable fusion device used under the endoscope, and mainly solves the problems in the background technology.
The invention provides a minimally invasive fence type deformable fusion device used under an endoscope, which comprises a fusion device and an auxiliary component, wherein the fusion device comprises a head end section, a tail end section, a plurality of middle end sections, a shaping pull rope and a shaping piece, the head end section, the tail end section and the middle end sections are rotatably connected through a first pin shaft, a pull rope through hole is formed in each end section, one end of the shaping pull rope is fixed at the head end section, the other end of the shaping pull rope penetrates through the pull rope through hole in the middle end section and extends out through the pull rope through hole in the tail end section, the shaping piece is arranged on the tail end section, the shaping piece is used for fixing the shaping pull rope, and the auxiliary component is used for assisting in implanting the fusion device into an intervertebral space.
The improved structure of the novel screw forming machine is characterized in that the forming piece comprises a screw, a forming pressing plate and a second pin shaft, a thread groove is formed in the tail end section, an external thread matched with the thread groove is arranged on the screw, the tail end of the screw is obliquely connected with one side of the forming pressing plate, a round hole is formed in the other side of the forming pressing plate, the second pin shaft penetrates through the round hole, the forming pressing plate is rotatably installed in the thread groove through the second pin shaft, the bottom of the thread groove is communicated with the pull rope through hole, the forming piece controls the rotating angle of the forming pressing plate through the screw, and the second pin shaft is the rotating center shaft of the forming pressing plate.
In a further improvement, the auxiliary components comprise a working sheath tube, a holder, a calibrator, a balloon and an endoscope, the working sheath tube is used for firstly extending into the intervertebral space to be used as a working channel, and the endoscope is used for assisting the operation under the endoscope to implant the fusion device.
The improved fusion cage is characterized in that the holder is used for clamping the fusion cage and comprises a holding circular tube, a clamping jaw and a closed sleeve, the holding circular tube is of a hollow circular tube structure, the clamping jaw is arranged at the top end of the holding circular tube, a clamping groove is formed in the position, corresponding to the clamping jaw, of the tail end section, the clamping groove is of a fan-shaped design, the swinging angle of the tail end section relative to the clamping jaw is limited through the fan-shaped design, the clamping jaw and the clamping groove are matched with each other to enable the holder to clamp the tail end section, the clamping jaw is fixedly connected with the holding circular tube, the holding circular tube is sleeved with the closed sleeve, when the closed sleeve is pushed forwards to the clamping jaw, the clamping jaw interval is reduced, and when the closed sleeve is retreated away from the clamping jaw, the clamping jaw interval is restored to an open state.
The improvement further lies in, the calibrator is used for control the volume of stretching into of calibrator, the calibrator includes design pole and design head, the cross section of design head is hexagonal shape, correspond on the screw the recess of looks adaptation is seted up to the design head, the design head with the screw is mutually supported to move through twisting the calibrator and then adjust the volume of stretching into of screw.
The improved structure is characterized in that the balloon is used for opening intervertebral space, the tail end of the balloon is connected with a balloon rod, the balloon rod is used for inflating and deflating the balloon, a plurality of lead installation positions are distributed on the outer contour of the balloon, the lead installation positions are of a C-shaped structure with an opening, the lead installation positions allow a traction line penetrating into the lead installation positions to be radially separated from the lead installation positions, a through hole is formed in the head end joint, one end of the traction line penetrates into the through hole in the head end joint and is connected with the head end joint, and the two line heads are pulled together to pull the head end joint.
The further improvement is that the balloon is a central balloon, and when the balloon is inflated, the upper space and the lower space of the balloon are expanded.
The further improvement is that one end of the traction wire is detachably connected with the head end section.
The invention provides a use method of a minimally invasive fence type deformable fusion device used under an endoscope, which comprises the following steps:
s1, extending the working sheath into the intervertebral space to create a working channel;
s2, a traction wire is inserted into the hole at the front end of the head end section of the fusion cage, and then the traction wire is installed at a lead installation position on the outer contour of the balloon;
s3, introducing the balloon into the intervertebral space through the working channel by the aid of a balloon rod, inflating and expanding the balloon to a specified height, engaging the jaws on the holder with the clamping grooves on the tail end segments of the fusion device, delivering the fusion device into the intervertebral space through the working channel by the aid of the holder, and placing the fusion device along the outer contour of the balloon in an arc shape by the aid of a traction wire;
s4, stretching the shaper into the round holding tube along the hollow internal channel of the round holding tube to enable the shaping head to tightly push against the groove of the screw on the end section of the fusion device, tensioning the shaping pull rope to fix the overall shape of the fusion device, and adjusting the stretching amount of the screw to enable the shaping pressing plate to compress the shaping pull rope to maintain the shape of the fusion device;
s5, drawing the traction wire out of the working channel, taking the holder out, deflating the balloon, taking the balloon out, stretching the endoscope into the working channel, cutting off redundant shaping pull ropes with the assistance of the endoscope, and completing bone grafting operation under the monitoring of the endoscope;
and S6, taking out the endoscope and the working sheath tube, and finishing use.
The further improvement is that the designated height is the vertical height after the balloon is inflated and expanded up and down, and the designated height is larger than the height of the fusion device.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention discloses a minimally invasive fence type deformable fusion device used under an endoscope, which has the advantages of small operation wound, accurate positioning, wide support area, stable support, wide bone grafting groove and the like. The invention discloses a minimally invasive fence type deformable fusion device used under an endoscope, which has the advantages of small operation wound, wide support area, stable support, wide bone grafting groove and the like;
2. conventional cages now hold a small amount of bone and if the window is enlarged at the same time, the biomechanical strength of the fused segment may be reduced and the fusion rate is not high enough, which may lead to further complications. The minimally invasive fence type deformable fusion device used under the endoscope is characterized in that an inflatable balloon is placed in an intervertebral space, and then the inflatable balloon is assisted to expand to form a fence type fusion device to jointly expand the intervertebral height, so that the contact surface of the cage type fusion device and a bone end plate is increased, the surgical wound is small, the supporting area is wide, the supporting is stable, the maximum effect is matched with the structure of a human body, the inflammatory reaction after the operation is reduced, the original structure of the human body is protected to the maximum extent, the bone grafting groove is wide, and the bone grafting effect and the fusion rate are guaranteed.
Drawings
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
FIG. 1 is a schematic diagram of the structure of the main components of an embodiment of the present invention;
FIG. 2 is a schematic view of a working sheath as a working channel according to an embodiment of the present invention;
FIG. 3 is a schematic view of a working sheath as a working channel according to an embodiment of the present invention;
FIG. 4 is a schematic view of a balloon extending into an intervertebral space according to one embodiment of the invention;
FIG. 5 is a schematic view of a balloon inflated in an intervertebral space according to an embodiment of the invention;
FIG. 6 is a schematic diagram of a fusion cage insertion process according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating the effect of the fusion cage after the completion of the insertion of the fusion cage according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a calibrator placement process according to an embodiment of the present invention;
FIG. 9 is a schematic view of a deflated balloon in an intervertebral space according to an embodiment of the invention;
FIG. 10 is a schematic diagram illustrating the effect of the auxiliary member after being withdrawn according to an embodiment of the present invention;
FIG. 11 is a schematic view of the overall structure of a balloon according to an embodiment of the present invention;
FIG. 12 is a schematic view of the connection between the holder, the fusion device and the balloon according to an embodiment of the present invention;
FIG. 13 is a schematic view of the overall structure of the fusion cage according to an embodiment of the present invention;
FIG. 14 is an enlarged view of the fixation member of the fusion cage in accordance with one embodiment of the present invention;
FIG. 15 is a schematic view of the bending effect of the fusion cage according to an embodiment of the present invention;
FIG. 16 is a schematic view of an end section of the fusion cage according to an embodiment of the present invention;
FIG. 17 is a schematic structural view of a setting member setting platen according to an embodiment of the present invention;
FIG. 18 is a cross-sectional view of a connecting structure of a holder and an end node according to an embodiment of the present invention;
FIG. 19 is a schematic view of an overall structure of a holder according to an embodiment of the present invention;
FIG. 20 is a schematic diagram of the overall structure of a setting device according to an embodiment of the present invention;
wherein: 1. a fusion device; 2. a working sheath; 3. a holder; 4. a shaping device; 5. a balloon; 6. a claw; 7. closing the sleeve; 8. a screw; 9. shaping and pressing the plate; 10. a first pin shaft; 11. a head end section; 12. shaping a pull rope; 13. a terminal section; 14. a second pin shaft; 15. a pull wire; 16. a lead mounting location; 17. an endoscope.
Detailed Description
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Referring to the attached drawings of the specification, the invention relates to the technical field of medical instruments, in particular to a minimally invasive fence type deformable fusion device 1 used under an endoscope, which has the advantages of small operation wound, accurate positioning, large support area, stable support, wide bone grafting groove and the like, and comprises a fusion device 1 and auxiliary components, wherein the fusion device 1 comprises a head end section 11, a tail end section 13, a plurality of middle end sections, a shaping pull rope 12 and shaping components, the head end section, the tail end section and the middle end section are connected in a rotatable manner through a first pin shaft 10, each end section is provided with a pull rope through hole, one end of the shaping pull rope 12 is fixed at the head end section 11, the other end of the shaping pull rope 12 penetrates through the pull rope through hole on the middle end section and extends out through the pull rope through hole of the tail end section 13, the shaping components are arranged on the tail end section 13, the shaping component is used for fixing the shaping pull rope 12, and the auxiliary component is used for assisting the fusion device 1 to be implanted into the intervertebral space.
As a preferred embodiment of the present invention, the shaping member includes a screw 8, a shaping pressing plate 9 and a second pin 14, a thread groove is formed on the end section 13, an external thread adapted to the thread groove is formed on the screw 8, the end of the screw 8 is obliquely connected to one side of the shaping pressing plate 9, a circular hole is formed on the other side of the shaping pressing plate 9, the second pin 14 penetrates through the circular hole, the shaping pressing plate 9 is rotatably mounted in the thread groove through the second pin 14, the bottom of the thread groove is communicated with the pull rope through hole, the shaping member controls the rotation angle of the shaping pressing plate 9 through the screw 8, and the second pin 14 is a rotation center shaft of the shaping pressing plate 9.
In a preferred embodiment of the present invention, the auxiliary components include a working sheath 2, a holder 3, a setting device 4, a balloon 5 and an endoscope 17, the working sheath 2 is used to be inserted into the intervertebral space in advance as a working channel, and the endoscope 17 is used to assist the under-mirror operation implantation of the fusion device 1.
As a preferred embodiment of the present invention, the holder 3 is configured to hold the fusion cage 1, the holder 3 includes a circular holding tube, a jaw 6 and a closing sleeve 7, the circular holding tube is a hollow circular tube, the jaw 6 is disposed at a top end of the circular holding tube, a slot is disposed on the end node 13 corresponding to the jaw 6, the slot is designed in a sector shape, a swing angle of the end node 13 relative to the jaw 6 is limited by the sector design, the jaw 6 and the slot cooperate with each other so that the holder 3 holds the end node 13, the jaw 6 is fixedly connected to the circular holding tube, the circular holding tube is sleeved with the closing sleeve 7, when the closing sleeve 7 is pushed forward to the jaw 6, an interval between the jaws 6 is reduced, when the closing sleeve 7 is retracted away from the jaw 6, the distance between the claws 6 is restored to the open state.
It can be understood that, in the embodiment of the present invention, the jaw 6 includes an upper jaw and a lower jaw, a semicircular protrusion is disposed at the end of the jaw 6, the semicircular protrusion is matched with a slot on the end segment 13, and the slot is fan-shaped, so as to satisfy a certain angle of swing of the end segment 13 on the holder 3, it should be understood that limiting the swing angle of the end segment 13 on the holder 3 is favorable for implanting the fusion cage 1 into the intervertebral space, and at the same time, the characteristic of the swing angle is favorable for bending the fusion cage 1 into a preferred arc shape in the intervertebral space, the jaw 6 is fixedly connected to the holding circular tube, the holding circular tube is a hollow tube structure, a hollow inner channel is used as a working channel for working the shaper 4, a joint between the holding circular tube and the jaw 6 is further axially provided with a clamping seam, and a step is provided on an outer surface of one end of the holding circular tube close to the jaw 6, referring to fig. 19, the closed sleeve 7 cover establish on the control pipe, when closed sleeve 7 toward when jack catch 6 direction impels, the joint is closed under closed sleeve 7's extrusion, and the interval between jack catch 6 diminishes for the jack catch 6 can be the more draw-in groove on the tight adaptation end section 13, it is more firm to control, when closed sleeve 7 toward keeping away from when jack catch 6 direction is retreated, the joint can recover naturally under the condition that does not receive the extrusion, opens to original interval, and jack catch 6 withdraws from the draw-in groove on the end section 13.
As a preferred embodiment of the present invention, the calibrator 4 is configured to control an extension amount of the calibrator, the calibrator 4 includes a calibrator rod and a calibrator head, a cross section of the calibrator head is hexagonal, a groove corresponding to the calibrator head is formed on the screw 8, the calibrator head and the screw 8 are matched with each other, and the extension amount of the screw 8 is adjusted by screwing the calibrator 4.
As a preferred embodiment of the present invention, the balloon 5 is used for distracting an intervertebral space, the end of the balloon 5 is connected with a balloon 5 rod, the balloon 5 rod is used for inflating and deflating the balloon 5, a plurality of lead installation sites 16 are distributed along the outer contour of the balloon 5, the lead installation sites 16 are in a "C" shape structure with an opening, the lead installation sites 16 allow a traction wire 15 penetrating therethrough to be radially separated from the lead installation sites 16, the head end section 11 is provided with a through hole, one end of the traction wire 15 penetrates through the through hole on the head end section 11 to be connected with the head end section 11, and the two wire ends are pulled together, so that the head end section 11 can be pulled.
It can be understood that, in the embodiment of the present invention, the pulling wire 15 is folded in half, the head of the pulling wire 15 is inserted into the through hole of the head end section 11, it is worth mentioning that the head of the pulling wire 15 is not knotted inside the through hole, but simply fixed by the curved through hole, and the other end of the pulling wire 15 passes through each lead mounting position 16
The traction wire 15 pulls the fusion device 1 around the outer contour of the balloon 5.
In a preferred embodiment of the present invention, the balloon 5 is a center type balloon, and the upper and lower sides of the balloon 5 are spatially expanded when the balloon 5 is inflated.
As a preferred embodiment of the present invention, one end of the pulling wire 15 is detachably connected to the head end section 11.
A using method of a minimally invasive rail type deformable fusion device 1 used under an endoscope comprises the following steps:
s1, extending the working sheath 2 into the intervertebral space to create a working channel;
s2, a traction wire 15 is inserted into a hole at the front end of the head end node 11 of the fusion cage 1, and then the traction wire 15 is installed at a lead installation position 16 on the outer contour of the balloon 5;
s3, introducing the balloon 5 into the intervertebral space through the working channel by means of the balloon 5 rod, inflating and expanding the balloon 5 to a specified height, engaging the claws 6 on the holder 3 with the clamping grooves on the end section 13 of the fusion device 1, delivering the fusion device 1 into the intervertebral space through the working channel by means of the holder 3, and meanwhile, enabling the fusion device 1 to be placed along the outer contour arc of the balloon 5 by means of the traction wire 15;
s4, stretching the shaper 4 along the hollow internal channel of the holding round tube, enabling the shaping head to tightly push against the groove of the screw 8 on the end section 13 of the fusion device 1, tensioning the shaping pull rope 12, enabling the overall shape of the fusion device 1 to be fixed, and adjusting the stretching amount of the screw 8 to enable the shaping pressing plate 9 to press the shaping pull rope 12 to maintain the shape of the fusion device 1;
s5, the traction wire 15 is pulled out of the working channel, the holder 3 is taken out, the balloon 5 is deflated and then taken out, the endoscope 17 is stretched into the working channel, the redundant shaping pull rope 12 is cut off with the help of the endoscope 17, and the bone grafting operation is completed under the monitoring of the endoscope;
s6, the endoscope 17 is taken out, and the working sheath 2 is taken out and used.
As a preferred embodiment of the present invention, the designated height is a vertical height after the balloon 5 is inflated and expanded up and down, and the designated height is greater than the height of the fusion device 1.
More specifically, after the working sheath 2 is placed at a proper position beside the intervertebral space, the traction wire 15 is inserted from the head end segment 11 of the fusion cage 1, and the traction wire 15 is installed on the installation position at the periphery of the balloon, which is worth to say, the installation position is an open major arc structure, the traction wire 15 placed therein can be directly pulled out from the radial direction, then, the holder 3 is installed on the tail end segment 13 of the fusion cage 1, then, the balloon 5 is placed into the intervertebral space from the working sheath 2 (i.e. the working channel), after inflation, the balloon 5 props the intervertebral space to a height higher than that of the fusion cage 1, at the moment, the traction wire 15 is pulled and the fusion cage 1 is sent into the intervertebral space under the support of the holder 3; after the fusion cage 1 is positioned at a proper position in the intervertebral space, the calibrator 4 is placed in and screws 8 on the upper end section 13 are tightened to form the pull rope 12, meanwhile, the screws 8 are screwed down through the calibrator 4, the forming press plate 9 compresses the forming pull rope 12, and the fusion cage 1 maintains the shape thereof; then the traction wire 15 is pulled out of the head end section 11 of the fusion device 1, the calibrator 4 is taken out, the balloon 5 is deflated and taken out, then the redundant pull rope exposed behind the end section 13 of the fusion device 1 is cut off under the observation of the endoscope 17, the whole fusion device 1 is molded and in the intervertebral space, and then the bone filler can be implanted into the fusion device 1.
It should be noted that the balloon 5 is a central balloon, and has thick left and right side walls, and only the upper and lower spaces expand when inflated.
In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. A minimally invasive fence type deformable fusion device used under an endoscope is characterized by comprising a fusion device (1) and auxiliary components, wherein the fusion device (1) comprises a head end section (11), a tail end section (13), a plurality of middle end sections, a shaping pull rope (12) and shaping pieces, the head end section (11), the tail end section (13) and the middle end sections are rotatably connected through a first pin shaft (10), a pull rope through hole is formed in each end section, one end of the shaping pull rope (12) is fixed at the head end section (11), the other end of the shaping pull rope (12) penetrates through the pull rope through hole in the middle end section and extends out of the pull rope through hole in the tail end section (13), the shaping pieces are arranged on the tail end sections (13), and the shaping pieces are used for fixing the shaping pull rope (12), the auxiliary component is used for assisting the fusion device (1) to be implanted into the intervertebral space, the shaping piece comprises a screw (8), a shaping pressing plate (9) and a second pin shaft (14), a thread groove is arranged on the tail end section (13), an external thread matched with the thread groove is arranged on the screw (8), the tail end of the screw (8) is obliquely connected with one side of the shaping pressing plate (9), a round hole is arranged on the other side of the shaping pressing plate (9), the round hole is penetrated by the second pin shaft (14), the shaping pressing plate (9) is rotatably arranged in the thread groove through the second pin shaft (14), the bottom of the thread groove is communicated with the stay cord through hole, the shaping piece controls the rotation angle of the shaping pressing plate (9) through the screw (8), the second pin shaft (14) is a rotating central shaft of the shaping pressing plate (9).
2. The minimally invasive rail-type deformable fusion device used under endoscope is characterized in that the auxiliary components comprise a working sheath (2), a holder (3), a calibrator (4), a balloon (5) and an endoscope (17), wherein the working sheath (2) is used for firstly extending into the intervertebral space to be used as a working channel, and the endoscope (17) is used for assisting the endoscopic operation to implant the fusion device (1).
3. The minimally invasive rail-type deformable fusion device used under an endoscope is characterized in that the holder (3) is used for holding the fusion device (1), the holder (3) comprises a holding circular tube, a jaw (6) and a closed sleeve (7), the holding circular tube is of a hollow circular tube structure, the jaw (6) is arranged at the top end of the holding circular tube, a clamping groove is formed in the position, corresponding to the jaw (6), of the tail end section (13), the clamping groove is of a fan-shaped design, the swinging angle of the tail end section (13) relative to the jaw (6) is limited through the fan-shaped design, the jaw (6) and the clamping groove are matched with each other, so that the holder (3) holds the tail end section (13), the jaw (6) is fixedly connected with the holding circular tube, and the closed sleeve (7) is sleeved on the holding circular tube, when the closing sleeve (7) is pushed forwards to the clamping jaws (6), the distance between the clamping jaws (6) is reduced, and when the closing sleeve (7) retreats away from the clamping jaws (6), the distance between the clamping jaws (6) is restored to an open state.
4. The minimally invasive rail type deformable fusion device used under endoscope according to claim 2, wherein the calibrator (4) is used for controlling the extension amount of the calibrator, the calibrator (4) comprises a calibrator rod and a calibrator head, the cross section of the calibrator head is in a hexagonal shape, the screw (8) is provided with a groove corresponding to the calibrator head, the calibrator head and the screw (8) are mutually matched, and the extension amount of the screw (8) is adjusted by screwing the calibrator (4).
5. The minimally invasive rail-type deformable fusion device used under an endoscope is characterized in that the balloon (5) is used for distracting intervertebral disc space, the tail end of the balloon (5) is connected with a balloon (5) rod, the balloon (5) rod is used for inflating and deflating the balloon (5), a plurality of lead installation positions (16) are distributed along the outer contour of the balloon (5), the lead installation positions (16) are of a C-shaped structure with an opening, the lead installation positions (16) allow a traction wire (15) penetrating into the lead installation positions to be radially separated from the lead installation positions (16), a through hole is formed in the head end section (11), and the traction wire (15) penetrates into the through hole in the head end section (11) and is connected with the head end section (11).
6. An endoscopically minimally invasive rail-type deformable fusion device according to claim 5, wherein the balloon (5) is a central balloon, and the upper and lower parts of the balloon (5) are spatially expanded when the balloon (5) is inflated.
7. An endoscopically minimally invasive rail-type deformable fusion device as claimed in claim 5, wherein one end of the pull wire (15) is detachably connected with the head end section (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110707490.9A CN113244027B (en) | 2021-06-25 | 2021-06-25 | Minimally invasive fence type deformable fusion device used under endoscope |
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| DE19710392C1 (en) * | 1997-03-13 | 1999-07-01 | Haehnel Michael | Slipped disc implant comprises an extensible, hinged or wound body |
| US7503920B2 (en) * | 2004-08-11 | 2009-03-17 | Tzony Siegal | Spinal surgery system and method |
| WO2008084479A2 (en) * | 2007-01-09 | 2008-07-17 | Nonlinear Technologies Ltd. | Devices for forming curved or closed-loop structures |
| KR20120138762A (en) * | 2010-02-16 | 2012-12-26 | 엔엘티 스파인 리미티드. | Medical device lock mechanism |
| JP5807928B2 (en) * | 2010-07-15 | 2015-11-10 | エヌエルティー スパイン エルティーディー． | Surgical system and method for implanting expandable implants |
| KR101877806B1 (en) * | 2010-10-05 | 2018-07-12 | 모건 피. 로리오 | Minimally invasive intervertebral systems and methods |
| EP3281609B1 (en) * | 2012-05-29 | 2019-02-27 | NLT Spine Ltd. | Expanding implant |
| US9480574B2 (en) * | 2013-03-14 | 2016-11-01 | Benvenue Medical, Inc. | Spinal fusion implants and devices and methods for deploying such implants |
| US9463099B2 (en) * | 2013-03-15 | 2016-10-11 | Expanding Orthopedics Inc. | Orthopedic expandable devices |
| US10828171B2 (en) * | 2013-07-18 | 2020-11-10 | The University Of Toledo | Expandable inter-vertebral cage and method of installing same |
| CN106308983B (en) * | 2016-08-31 | 2018-09-14 | 广州爱锘德医疗器械有限公司 | Fusion device, operator and vertebral fusion device |
| US10111755B2 (en) * | 2017-02-24 | 2018-10-30 | Warsaw, Orthopedic, Inc. | Expanding interbody implant and articulating inserter and methods of use |
| CN107374789B (en) * | 2017-08-16 | 2019-12-31 | 苏州博习医疗科技有限公司 | Minimally invasive intervertebral fusion device |
| CN110368146B (en) * | 2019-07-12 | 2020-07-31 | 浙江科惠医疗器械股份有限公司 | Rotary expanding type interbody fusion cage |
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