CN113520487A - Unfolding mechanism, plugging device and using method - Google Patents
Unfolding mechanism, plugging device and using method Download PDFInfo
- Publication number
- CN113520487A CN113520487A CN202110707454.2A CN202110707454A CN113520487A CN 113520487 A CN113520487 A CN 113520487A CN 202110707454 A CN202110707454 A CN 202110707454A CN 113520487 A CN113520487 A CN 113520487A
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- Prior art keywords
- pushing block
- supporting rod
- guide wire
- pushing
- deployment mechanism
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- 230000007246 mechanism Effects 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000003068 static effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 16
- 230000000452 restraining effect Effects 0.000 claims 2
- 230000009471 action Effects 0.000 abstract description 8
- 230000008569 process Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 208000008883 Patent Foramen Ovale Diseases 0.000 description 3
- 239000008280 blood Substances 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 3
- 208000027205 Congenital disease Diseases 0.000 description 2
- 208000035478 Interatrial communication Diseases 0.000 description 2
- 208000001910 Ventricular Heart Septal Defects Diseases 0.000 description 2
- 208000013914 atrial heart septal defect Diseases 0.000 description 2
- 206010003664 atrial septal defect Diseases 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 208000025339 heart septal defect Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 208000003278 patent ductus arteriosus Diseases 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 201000003130 ventricular septal defect Diseases 0.000 description 2
- 210000000709 aorta Anatomy 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 210000005246 left atrium Anatomy 0.000 description 1
- 210000005240 left ventricle Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000541 pulsatile effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 210000005245 right atrium Anatomy 0.000 description 1
- 210000005241 right ventricle Anatomy 0.000 description 1
Images
Classifications
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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
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00592—Elastic or resilient implements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/0061—Implements located only on one side of the opening
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00615—Implements with an occluder on one side of the opening and holding means therefor on the other
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00619—Locking means for locking the implement in expanded state
Abstract
The invention discloses a deployment mechanism, a plugging device using the deployment mechanism and a use method of the plugging device, wherein the deployment mechanism comprises a bundling piece and a first stopping part; one end of the supporting rod is hinged with the bundling piece and is provided with a butting part; the pushing block is movably arranged in the bundling piece and used for pushing the abutting part to enable the supporting rod to rotate to the unfolding position, and a second stopping part is arranged on the pushing block; the second stopping portion is matched with the first stopping portion, so that the pushing block keeps static in the bundling piece. According to the arrangement, the abutting part is pushed through the pushing block, the supporting rod is rotated until the supporting rod rotates to the unfolding position, the second stopping part is matched with the first stopping part, the pushing block cannot continue to push the abutting part, the supporting rod stops rotating and is kept at the unfolding position, meanwhile, the pushing block cannot back under the action of the first stopping part, the supporting rod is prevented from rotating, and the supporting rod is ensured to be fully unfolded.
Description
Technical Field
The invention relates to the technical field of occluders, in particular to a deployment mechanism, an occluder and a use method.
Background
Congenital diseases include patent ductus arteriosus, patent foramen ovale, atrial septal defect, ventricular septal defect, and the like, the patent ductus arteriosus may cause blood to flow between the aorta and the pulsatile arteries, the patent foramen ovale and the atrial septal defect may cause blood to flow between the left atrium and the right atrium, the ventricular septal defect may cause blood to flow between the left ventricle and the right ventricle, and when the flow rate is high, repair is generally needed. At present, various types of patent foramen ovale occlusion devices with gap defects are used for treating congenital diseases, and the occlusion devices are conveyed to a specific position of a patient through a conveying device and perform occlusion after being flattened.
The fixed disc of the existing occluder is generally made of memory alloy, the occluder automatically expands after being released to the septal defect part through the characteristics of the memory alloy, however, the fixed disc of the occluder is easily not expanded in place due to the deformation recovery through the characteristics of the memory alloy, so that the occluder cannot be effectively fixed at the septal defect part, and the occlusion fails.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a deployment mechanism, which drives the supporting rod to rotate through the pushing piece, so that the supporting rod can effectively rotate to a deployment position and be kept, and the plugging device can effectively plug.
A deployment mechanism according to an embodiment of the first aspect of the invention comprises:
the binding piece is provided with a first backstop part;
one end of the supporting rod is hinged with the bundling piece, and the one end of the supporting rod is provided with a butting part;
the pushing block is movably arranged in the bundling piece and used for pushing the abutting part to enable the supporting rod to rotate to the unfolding position, and a second stopping part is arranged on the pushing block;
the second backstop part is matched with the first backstop part, so that the pushing block keeps static in the bundling piece.
A deployment mechanism according to an embodiment of the first aspect of the invention has at least the following advantageous effects: the abutting part of the supporting rod is pushed through the pushing block, the supporting rod is enabled to rotate until the supporting rod rotates to the unfolding position, the second stopping part of the pushing block is matched with the first stopping part of the bundling piece, the pushing block cannot continue to push the abutting part, the supporting rod stops rotating and is kept at the unfolding position, meanwhile, the pushing block cannot back under the action of the first stopping part, the supporting rod is prevented from rotating, and therefore the supporting rod is enabled to be unfolded fully.
According to some embodiments of the invention, the abutting portion is provided as an L-shaped rod having openings of two sides thereof arranged toward the pushing block, one of the two sides having an end portion connected to the supporting rod and the other end portion abutting against the pushing block.
According to some embodiments of the invention, the first backstop portion is provided as an internal thread and the second backstop portion is provided as an external thread matching the internal thread.
According to some embodiments of the invention, the first retaining portion is configured as an annular groove, the second retaining portion is configured as an elastic ring, and when the pushing block moves to the unfolding position, the elastic ring is clamped in the annular groove, so that the pushing block keeps still.
According to some embodiments of the invention, the resilient ring is a circular ring or a trapezoidal ring.
According to some embodiments of the invention, the tightening member is further provided with an anti-falling step, the diameter of the anti-falling step is smaller than that of the elastic ring, and the anti-falling step is used for preventing the pushing block from falling off the tightening member.
An occluding device according to an embodiment of the second aspect of the invention has a deployment mechanism as described above.
An occluder according to an embodiment of the second aspect of the present invention has at least the following advantages: after the plugging device is conveyed to a target part, the abutting part of the supporting rod is pushed through the pushing block to enable the supporting rod to rotate until the supporting rod rotates to an unfolding position, the second stopping part of the pushing block is matched with the first stopping part of the bundling piece, the pushing block cannot continue to push the abutting part, the supporting rod stops rotating and is kept at the unfolding position, meanwhile, the pushing block cannot back under the action of the first stopping part, the rotation of the supporting rod is avoided, the supporting rod is ensured to be fully unfolded, and the plugging device can perform effective plugging work.
According to some embodiments of the invention, further comprising:
the plugging disc is a reticular disc;
one end of the spiral spring is connected with the plugging disc, and the other end of the spiral spring is connected with the unfolding mechanism;
wherein the deployment mechanism forms a fixed disk.
According to some embodiments of the invention, a central thread of the plugging disc is connected with a sealing cap.
A method of using an occluding device according to an embodiment of a third aspect of the invention comprises the steps of:
folding, rotating the support rods to a folding position, connecting the support rods with a sealing cap through a guide wire, and stretching the plugging disc into a cylindrical shape to be collected in the transportation catheter;
conveying, namely conveying the guide wire and the conveying catheter to a target part, taking out the sealing cap through the guide wire, and extending the guide wire into the plugging disc until the guide wire abuts against the pushing block;
opening, pushing the pushing block to the inside of the target part through the guide wire to enable the unfolding mechanism to be separated from the transportation catheter, continuously pushing the pushing block through the guide wire, enabling the pushing block to abut against the supporting rod to enable the supporting rod to rotate to an unfolding position, fixing the pushing block on a first stopping part, and withdrawing the transportation catheter and the guide wire until the plugging disc is separated from the transportation catheter;
and sealing, and installing the sealing cap on the plugging disc through the guide wire.
The use method of the occluder according to the embodiment of the third aspect of the invention has at least the following advantages: draw in the plugging device in to the transportation pipe, carry the plugging device to target portion after, through seal wire propelling movement ejector pad, make the ejector pad push away the bracing piece, make the bracing piece rotate, rotate to the expansion position until the bracing piece, the ejector pad is fixed in first stopping portion, the bracing piece stall is kept in the expansion position, the ejector pad can not roll back under the effect of first stopping portion simultaneously, avoid the bracing piece gyration, thereby ensure the abundant expansion of bracing piece, make the plugging device can carry out effectual shutoff work.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of an occluding device according to an embodiment of the invention;
figure 2 is a front view of the occluding device shown in figure 1;
figure 3 is a cross-sectional view of the occluding device shown in figure 1;
figure 4 is an enlarged partial schematic view of the occluding device shown in figure 3;
FIG. 5 is a process diagram for deployment of the deployment mechanism of an embodiment of the present invention;
fig. 6 is a front view of a containment disc according to an embodiment of the present invention.
A binding member 100, a first retaining portion 110, and a retaining step 120;
a support rod 200, an abutment 210;
a pushing member 300, a second stopping portion 310;
a plugging disc 400, a sealing cap 410;
a coil spring 500.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is more than one, and the meaning of more than, less than, more than, etc. is understood as excluding the present number, and the meaning of more than, less than, etc. is understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 5, a deployment mechanism according to an embodiment of the present invention includes:
the bundling part 100 is cylindrical, a first stopping portion 110 is disposed on the bundling part 100, a plurality of support rods 200 are mounted on the bundling part 100, in this embodiment, the number of the support rods 200 is eight, one end of each support rod 200 is hinged to the bundling part 100, an avoiding groove is disposed at the hinged position of the support rod 200 of the bundling part 100 for avoiding interference of the support rod 200 during rotation, an abutting portion 210 is disposed at the same end of the support rod 200, a pushing block 300 is movably mounted in the bundling part 100, the upper end of the pushing block 300 can push the abutting portion 210, so that the support rod 200 can rotate from a folded position to an unfolded position, as shown in fig. 5, a second stopping portion 310 is mounted below the pushing block 300, referring to fig. 5, the pushing block 300 moves upwards to push the abutting portion 210, until the support rod 200 is unfolded to the unfolded position, the second stopping portion 310 of the pushing block 300 is matched with the first stopping portion 110, the pushing block 300 is stationary relative to the collecting member 100, so as to ensure that the supporting rod 200 does not rotate or revolve.
It should be noted that the unfolding position refers to a position where the support rod 200 is shown in fig. 1, and a limiting portion is disposed on one side of the avoiding groove on the bundling piece 100 away from the center of the bundling piece 100, and the limiting portion can stop the rotation of the support rod 200 after the support rod 200 rotates to the unfolding position, and cannot continue to rotate downward, so as to ensure that the support rod 200 is stationary at the unfolding position.
The working process is as shown in fig. 5, the initial position is that one end of each of the plurality of support rods 200 is upward, a similar cylindrical structure is formed, at this time, the pushing block 300 is not in contact with the abutting portion 210, the pushing block 300 is pushed upward, the upper end of the pushing block 300 is in contact with the abutting portion 210, the pushing block 300 continues to be pushed upward, at this time, the abutting portion 210 rotates upward, the other end of the support rod 200 is driven to rotate downward, until the support rod 200 enters the unfolding position, at this time, the second stopping portion 310 on the pushing block 300 is matched with the first stopping portion 110 on the bundling piece 100, the pushing block 300 is clamped, the pushing block 300 is kept static relative to the bundling piece 100, the support rod 200 stops rotating under the action of the limiting portion, because the upper end of the pushing block 300 abuts against the lower end of the abutting portion 210 at this time, the support rod 200 cannot rotate, and the effective unfolding of the support rod 200 is realized.
A deployment mechanism according to an embodiment of the first aspect of the invention has at least the following advantageous effects: the abutting part 210 of the supporting rod 200 is pushed by the pushing block 300, so that the supporting rod 200 rotates until the supporting rod 200 rotates to the unfolding position, the second stopping part 310 of the pushing block 300 is matched with the first stopping part 110 of the bundling piece 100, the pushing block 300 cannot continue to push the abutting part 210, the supporting rod 200 stops rotating and is kept at the unfolding position, meanwhile, the pushing block 300 cannot back under the action of the first stopping part 110, the rotation of the supporting rod 200 is avoided, and therefore the supporting rod 200 is ensured to be fully unfolded.
According to some embodiments of the present invention, referring to fig. 4, the abutting portion 210 is provided as an L-shaped rod, an opening is formed between two sides of the L-shaped rod, the opening is arranged toward the pushing block 300, one end of the two sides is connected to the supporting rod 200, and the other end is used for abutting against the pushing block 300; in the working process, as shown in fig. 5, the end of the other side of the L-shaped rod is first downward, the pushing block 300 is first contacted with the end face of the end of the other side in the upward pushing process, the L-shaped rod rotates along with the supporting rod 200, the contact position with the pushing block 300 is gradually changed from the end face to the vertex and finally to the side face, the opening forms a good avoiding effect on the pushing block 300 in the process, so that the pushing block 300 cannot interfere with the L-shaped rod in the pushing process, and meanwhile, the L-shaped rod is set as the L-shaped rod, so that when the pushing block 300 is pushed upward, the L-shaped rod can be always in contact with the pushing block 300 in the rotating process, the pushing block 300 cannot be separated to continue to be pushed, and the supporting rod 200 is ensured to be kept in the rotating state until the supporting rod rotates to the unfolding position.
In the above embodiment, the abutting portion 210 may also be provided as an arc-shaped rod, an opening of the arc-shaped rod is arranged toward the pushing block 300, one end of the arc-shaped rod is connected to the supporting rod 200, and the other end abuts against the pushing block 300.
According to some embodiments of the present invention, the first stopping portion 110 is configured as an internal thread in the tightening member 100, the second stopping portion 310 is configured as an external thread matching the internal thread, and the pushing manner of the pushing block 300 is a spiral lifting manner, and after the supporting rod 200 rotates to the unfolding position, the pushing block 300 stops rotating, and the pushing block 300 does not retract and can perform a stopping function in the thread matching, in this arrangement, the end portion of the lower end of the pushing block 300 is also provided with a thread structure for matching with a guide wire, and the pushing block 300 is rotated by the guide wire.
According to some embodiments of the present invention, referring to fig. 4 and 5, the first stopping portion 110 is configured as a ring groove, the second stopping portion 310 is configured as an elastic ring, and the elastic ring is compressed and contracted between the tightening member 100 and the pushing member 300 when the pushing member 300 is not moved to the expanded position, as shown in the first process diagram and the second process diagram of fig. 5, after the pushing member 300 is moved to the expanded position, the elastic ring is released into the ring groove, so that the pushing member 300 is fixed at the ring groove, and the pushing member 300 and the tightening member 100 are kept relatively still.
In the above embodiment, the elastic ring may be configured as a circular ring or a trapezoidal ring, or may be configured as a square ring, a triangular ring, or the like; the elastic ring can be made of nickel-titanium alloy, and the deformation and the recovery are completed by the memory characteristic of the elastic ring.
According to some embodiments of the present invention, referring to fig. 5, the lower end of the tightening member 100 is further provided with an anti-falling step 120, and the diameter of the anti-falling step 120 is smaller than that of the elastic ring, so that the pushing block 300 can be prevented from falling off the tightening member 100, and during the installation process, because the elastic ring has enough elasticity, the upper end of the pushing block 300 can directly pass through the anti-falling step 120, and the lower end of the pushing block can be squeezed into the upper side of the anti-falling step 120, so as to complete the installation.
An occluding device according to an embodiment of the second aspect of the invention has a deployment mechanism as described above.
An occluder according to an embodiment of the second aspect of the present invention has at least the following advantages: after the plugging device is conveyed to a target part, the abutting part 210 of the supporting rod 200 is pushed by the pushing block 300, so that the supporting rod 200 rotates until the supporting rod 200 rotates to an unfolding position, the second stopping part 310 of the pushing block 300 is matched with the first stopping part 110 of the bundling piece 100, so that the pushing block 300 cannot continue to push the abutting part 210, the supporting rod 200 stops rotating and is kept at the unfolding position, meanwhile, the pushing block 300 cannot back under the action of the first stopping part 110, the rotation of the supporting rod 200 is avoided, the supporting rod 200 is ensured to be fully unfolded, and the plugging device can perform effective plugging work.
According to some embodiments of the invention, referring to fig. 1, further comprising:
the plugging disc 400 is a mesh disc, as shown in fig. 1, one end of a coil spring 500 is connected to the plugging disc 400, the other end of the coil spring 500 is connected to the bundling member 100 on the unfolding mechanism, in this embodiment, the unfolding mechanism directly constitutes the fixing disc of the plugging device, and the plurality of support rods 200 form the disc surface of the fixing disc at the unfolding position.
According to some embodiments of the invention, referring to fig. 6, a sealing cap 410 is screwed in the center of the plugging disc 400, after the plugging device is sent to a target part, the sealing cap 410 can be opened through the guide wire, then the guide wire is extended into the plugging device, the pushing part 300 is pushed to enable the supporting rod 200 to complete the unfolding action, after the supporting rod 200 enters the unfolding position, the sealing cap 410 is installed on the plugging disc 400 through the guide wire, so that a cavity is prevented from being formed in the center of the plugging disc 400, and the plugging effect is better.
It should be noted that the cap 410 refers to a connecting member at the center of the plugging disk 400 for connecting a guide wire and closing the center of the plugging disk 400, and the cap 410 may also be referred to as a cover or a cover plate.
In the actual production and use process, the plugging disc 400 and the unfolding mechanism are also respectively provided with a flow-blocking film for blocking and plugging, and referring to fig. 1, the tail end of the support rod 200 of the unfolding mechanism is provided with a protective ball, so that the tail end of the support rod 200 can be prevented from damaging or damaging the target part.
A method of using an occluding device according to an embodiment of a third aspect of the invention comprises the steps of:
folding, namely rotating the support rods 200 to a folding position, connecting the seal caps 410 through guide wires, and stretching the plugging disc 400 into a cylindrical shape to be collected in a transportation catheter;
delivering, namely delivering the guide wire and the conveying catheter to a target part, taking out the sealing cap 410 through the guide wire, and extending the guide wire into the plugging disc 400 until the guide wire abuts against the pushing block 300;
opening, pushing the pushing block 300 to the inside of the target part through the guide wire to enable the unfolding mechanism to be separated from the transportation catheter, continuously pushing the pushing block 300 through the guide wire, enabling the pushing block 300 to be abutted against the supporting rod 200 to enable the supporting rod 200 to rotate to the unfolding position, fixing the pushing block 300 to the first stopping part 110 along with the supporting rod, and withdrawing the transportation catheter and the guide wire until the plugging disc 400 is separated from the transportation catheter;
and sealing, and mounting a sealing cap 410 on the plugging disc 400 through a guide wire.
The use method of the occluder according to the embodiment of the third aspect of the invention has at least the following advantages: the plugging device is folded into a transportation catheter, after the plugging device is conveyed to a target part, the pushing block 300 is pushed through the guide wire, the pushing block 300 pushes the supporting rod 200, the supporting rod 200 rotates until the supporting rod 200 rotates to an unfolding position, the pushing block 300 is fixed to the first stopping part 110, the supporting rod 200 stops rotating and is kept at the unfolding position, meanwhile, the pushing block 300 cannot return under the action of the first stopping part 110, the rotation of the supporting rod 200 is avoided, the supporting rod 200 is ensured to be fully unfolded, and the plugging device can perform effective plugging work.
In the above steps, the abutting portion 210 on the supporting rod 200 is set to be L-shaped or arc-shaped, the first stopping portion 110 is set to be a ring groove, and the second stopping portion 310 on the pushing block 300 is set to be an elastic ring.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A deployment mechanism for an occluding device, comprising:
the binding piece is provided with a first backstop part;
one end of the supporting rod is hinged with the bundling piece, and the one end of the supporting rod is provided with a butting part;
the pushing block is movably arranged in the bundling piece and used for pushing the abutting part to enable the supporting rod to rotate to the unfolding position, and a second stopping part is arranged on the pushing block;
the second backstop part is matched with the first backstop part, so that the pushing block keeps static in the bundling piece.
2. The deployment mechanism of claim 1, wherein the abutting portion is provided as an L-shaped bar, openings of two sides of the L-shaped bar are arranged toward the pushing block, one end of the two sides is connected to the support bar, and the other end abuts against the pushing block.
3. A deployment mechanism according to claim 1 or 2, wherein the first anti-backup portion is provided as an internal thread and the second anti-backup portion is provided as an external thread matching the internal thread.
4. The deployment mechanism as claimed in claim 1 or 2, wherein the first retaining portion is configured as an annular groove, the second retaining portion is configured as an elastic ring, and when the pushing block moves to the deployment position, the elastic ring is engaged with the annular groove to keep the pushing block stationary.
5. A deployment mechanism according to claim 4, wherein the resilient ring is a circular ring or a trapezoidal ring.
6. The deployment mechanism as claimed in claim 4, wherein the restraining member is further provided with an anti-drop step, the diameter of the anti-drop step is smaller than that of the elastic ring, and the anti-drop step is used for preventing the pushing block from dropping out of the restraining member.
7. An occluding device having a deployment mechanism as claimed in any one of claims 1 to 6.
8. The occlusion device of claim 7, further comprising:
the plugging disc is a reticular disc;
one end of the spiral spring is connected with the plugging disc, and the other end of the spiral spring is connected with the unfolding mechanism;
wherein the deployment mechanism forms a fixed disk.
9. The occlusion device of claim 8, wherein a cap is threadedly attached to the center of said occluding disk.
10. The use method of the occluder is characterized by comprising the following steps:
folding, rotating the support rods to a folding position, connecting the support rods with a sealing cap through a guide wire, and stretching the plugging disc into a cylindrical shape to be collected in the transportation catheter;
conveying, namely conveying the guide wire and the conveying catheter to a target part, taking out the sealing cap through the guide wire, and extending the guide wire into the plugging disc until the guide wire abuts against the pushing block;
opening, pushing the pushing block to the inside of the target part through the guide wire to enable the unfolding mechanism to be separated from the transportation catheter, continuously pushing the pushing block through the guide wire, enabling the pushing block to abut against the supporting rod to enable the supporting rod to rotate to an unfolding position, fixing the pushing block on a first stopping part, and withdrawing the transportation catheter and the guide wire until the plugging disc is separated from the transportation catheter;
and sealing, and installing the sealing cap on the plugging disc through the guide wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110707454.2A CN113520487A (en) | 2021-06-24 | 2021-06-24 | Unfolding mechanism, plugging device and using method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110707454.2A CN113520487A (en) | 2021-06-24 | 2021-06-24 | Unfolding mechanism, plugging device and using method |
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| CN113520487A true CN113520487A (en) | 2021-10-22 |
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| CN202110707454.2A Pending CN113520487A (en) | 2021-06-24 | 2021-06-24 | Unfolding mechanism, plugging device and using method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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