CN113476100A - Aortic dissection fracture self-expanding plugging device - Google Patents
Aortic dissection fracture self-expanding plugging device Download PDFInfo
- Publication number
- CN113476100A CN113476100A CN202110943718.4A CN202110943718A CN113476100A CN 113476100 A CN113476100 A CN 113476100A CN 202110943718 A CN202110943718 A CN 202110943718A CN 113476100 A CN113476100 A CN 113476100A
- Authority
- CN
- China
- Prior art keywords
- occluder
- disc
- coaxially
- plugging
- sealing cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12159—Solid plugs; being solid before insertion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
Abstract
The invention relates to the technical field of medical instruments, in particular to an aortic dissection fracture self-expanding occluder which comprises an occluder and an occluder dispenser, wherein the occluder comprises a first occluder disc, a second occluder disc, a connecting waist and an anti-dropping disc, the first occluder disc and the second occluder disc are coaxially connected through the connecting waist, at least one anti-dropping disc is arranged, when one anti-dropping disc is arranged, the anti-dropping disc is coaxially arranged at the other end of the first occluder disc or the second occluder disc through the connecting waist, and the diameter of the anti-dropping disc is larger than that of the first occluder disc or the second occluder disc; when the anticreep dish has a plurality ofly, the anticreep dish just keeps away from the diameter crescent of the anticreep dish of first shutoff dish or second shutoff dish through connecting the waist and setting up at the other end of first shutoff dish and second shutoff dish with the axial in proper order, and this plugging device can effectively avoid leading to the shutoff piece to drop the problem in real intracavity because of cracking mouthful enlarges.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a self-expanding type occluder for an aortic dissection rupture.
Background
The aortic dissection refers to the state that blood in the aortic lumen enters the aortic media from the aortic intimal tear to separate the media, and expands along the major axis of the aorta to form true and false separation of the two aortic walls. The aortic dissection in minimally invasive interventional therapy at present has been widely applied clinically due to the advantages of small trauma, short operation time and small blood transfusion amount. However, the aortic dissection usually has a plurality of lacerations distributed beside the important branch artery, the intraluminal treatment covers the first laceration with a stent-type artificial blood vessel to prevent blood from entering the false lumen, and reduces the pressure in the false lumen, so as to prevent thrombosis of the false lumen, but because the distal lacerations are not closed, there are still risks of blood reflux, long-term non-healing of the postoperative distal false lumen, and rupture caused by continuous enlargement of the false lumen.
In recent years, clinical attempts have been made to use an atrioventricular septal defect occluder to occlude the distal laceration. The commonly used occluder comprises double discs and a waist, wherein the double discs of the occluder are respectively arranged in the true and false cavities during use, the middle waist straddles the lacerated opening, and the filler in the double discs is used for blood occlusion. However, the stopper may still fall out of the breach due to the enlarged width of the breach caused by the increased tearing of the interlayer.
Chinese patent CN201711462692.1 discloses a flexible occluder and an aortic dissection intimal laceration occlusion method. The flexible occluder comprises a compressible hollow tube and a self-expanding flexible filling strip; the hollow tube is in a long strip shape and is divided into a front half part and a rear half part connected with the front half part along the length direction of the hollow tube, wherein the flexible filling strip is filled in a tube cavity of the front half part of the hollow tube, and the tube cavity of the rear half part of the hollow tube is left empty. The aortic dissection intimal laceration plugging method comprises the following steps: providing the flexible occluder; feeding the compressed flexible occluder; releasing the flexible occluder; the rear half part of the hollow tube is fixed.
The tension of the self-expansion of the flexible occluder in this occlusion method may actively cause the interlayer to tear more, thereby causing an undesirable problem.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a self-expanding occluder for aortic dissection rupture.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
an aortic dissection fracture self-expanding occluder comprises an occluder and an occluder dispenser, wherein the occluder comprises a first occluder disc, a second occluder disc, a connecting waist part and at least one anti-falling disc, the first occluder disc and the second occluder disc are coaxially connected through the connecting waist part, when one anti-falling disc is arranged, the anti-falling disc is coaxially arranged at the other end of the first occluder disc or the second occluder disc through the connecting waist part, and the diameter of the anti-falling disc is larger than that of the first occluder disc or the second occluder disc; when the anticreep dish has a plurality ofly, the anticreep dish passes through connect the waist to be in with the axial setting in proper order first shutoff dish and second shutoff dish's the other end, and keep away from the diameter of the anticreep dish of first shutoff dish or second shutoff dish increases gradually.
Preferably, the closure is made of an elastic material.
Preferably, in the axially contracted state of the plugging member, the anti-dropping disc is axially wrapped outside the first plugging disc or the second plugging disc which is axially contracted.
Preferably, the closure dispenser comprises a control member; the leading-in pipe is arranged at the working end of the control piece, and the control piece is used for guiding the leading-in pipe to enter the blood vessel and move to the rupture port; the mounting head is coaxially arranged at the end part of the guide-in pipe, a first stepped groove, a second stepped groove and a third stepped groove are sequentially and coaxially arranged at the inner end of the mounting head from outside to inside, the diameters of the first stepped groove, the second stepped groove and the third stepped groove are gradually reduced, and the first stepped groove, the second stepped groove and the third stepped groove are sequentially and coaxially used for limiting the anti-falling disc, the second plugging disc and the first plugging disc in a contraction state along the radial direction; the rod piece pushing piece is coaxially arranged in the introducing pipe, and the working end of the rod piece pushing piece can move towards the end part of the introducing pipe in the same direction; the elastic butt joint rod is coaxially arranged at the working end of the rod piece pushing piece, and the elastic butt joint rod coaxially penetrates through the third step groove, the second step groove and the first step groove in sequence.
Preferably, the rod pushing piece comprises a sealing cylinder, and the sealing cylinder is coaxially arranged in the guide pipe; the piston is coaxially and slidably arranged in the sealing cylinder, the sealing cylinder is divided into a first cavity close to the mounting head and a second cavity far away from the mounting head by the piston, and the elastic butting rod penetrates through the first cavity and is coaxially and fixedly connected with the piston; the hose is coaxially arranged in the leading-in pipe, and one end of the hose penetrates through the sealing barrel and is communicated with the second cavity.
Preferably, one end of the sealing cylinder is provided with an air hole coaxial with the sealing cylinder, and the first cavity is communicated with the interior of the guide pipe through the air hole.
Preferably, the member propelling part still includes the sealing washer, the coaxial annular that is provided with on the outer periphery of piston, just the coaxial cover of sealing washer is established on the annular, the sealing washer with the interior circumferential surface interference fit of sealing cylinder.
Preferably, the block piece dispenser further comprises a flexible sealing cylinder, the flexible sealing cylinder is coaxially arranged in the port of the introducing pipe, the elastic abutting rod coaxially penetrates through the flexible sealing cylinder and is in sliding fit with the flexible sealing cylinder, and the flexible sealing cylinder is in interference fit with the elastic abutting rod.
Preferably, the facing surfaces of the first and second plugging discs are arched axially outwards.
Preferably, the facing surfaces of the first and second containment discs are uniformly arranged with ribs extending radially thereof.
Compared with the prior art, the application has the beneficial effects that:
1. according to the device, the plugging piece is pushed to the fracture opening through the plugging piece player, the plugging piece is unfolded at the fracture opening, the anti-release disc is unfolded in the false cavity, the first plugging disc and the second plugging disc are unfolded at two sides of the fracture opening and plug the fracture opening, and therefore the problem that the plugging piece falls into the true cavity due to expansion of the fracture opening can be effectively avoided;
2. according to the sealing device, the first sealing disc and the second sealing disc can be mutually and elastically abutted and stably clamp the fracture opening through the sealing piece made of the elastic material, so that the sealing piece is prevented from being separated from the fracture opening;
3. according to the anti-dropping device, the anti-dropping disc can be axially wrapped outside the first plugging disc or the second plugging disc in a shrinkage state, so that the anti-dropping disc, the first plugging disc or the second plugging disc can be sequentially expanded, and a fracture opening can be conveniently plugged;
4. according to the application, the leading-in pipe is guided to enter the blood vessel through the control part, and the elastic abutting rod can push the plugging part in the placement head by starting the rod piece pushing part, so that the leading-in pipe or the placement head can be sequentially unfolded at the fracture part;
5. according to the sealing device, the volumes of the first cavity and the second cavity in the sealing cylinder are changed, so that the piston can stably push the elastic abutting rod in the sealing cylinder, and the elastic abutting rod is convenient to eject the sealing piece out of the mounting head;
6. according to the piston, the air holes are formed in the sealing cylinder, so that the pressure intensity in the first cavity does not change along with the change of the volume, and the sliding process of the piston is more stable;
7. the sealing ring is coaxially sleeved on the annular groove of the piston, so that the sliding effect of the piston is prevented from being influenced by a gap between the circumferential surface of the piston and the inner circumferential surface of the sealing cylinder;
8. according to the flexible sealing cylinder, the clearance between the circumferential surface of the elastic abutting rod and the circumferential surface of the through hole of the mounting head can not enable blood to flow into the introducing pipe, so that the sealing performance of the introducing pipe is improved;
9. the back surfaces of the first plugging disc and the second plugging disc are arched outwards along the axial direction, so that the outer sides of the first plugging disc or the second plugging disc positioned in the vacuum cavity are relatively gentle along the axial direction of the blood vessel, and the influence of flowing blood on the plugging device is further reduced;
10. this application is through setting up the burr at first shutoff dish and second shutoff dish opposite face for the interlock fracture mouth can be stabilized to the burr, prevents that first shutoff dish and second shutoff dish from breaking away from the fracture mouth.
Drawings
FIG. 1 is a schematic view of a closure dispenser embodying the present invention for dispensing closures;
figure 2 is a schematic view of a closure member embodying the present invention in the closed condition;
FIG. 3 is an enlarged view of a portion of FIG. 2 at C;
FIG. 4 is an enlarged view of a portion of FIG. 1 at A;
FIG. 5 is a partial enlarged view of FIG. 1 at B;
FIG. 6 is a schematic perspective view of a closure embodying the present invention in an expanded condition;
FIG. 7 is an elevation view of a closure embodying the present invention in a deployed condition;
FIG. 8 is a cross-sectional view at section D-D of FIG. 7;
FIG. 9 is a side view of a closure embodying the present invention in an expanded condition;
FIG. 10 is a partial perspective view of a closure dispenser embodying the present invention;
FIG. 11 is a schematic view of the internal structure of a closure dispenser embodying the present invention;
FIG. 12 is a perspective view of a resilient abutment bar and lever pusher embodying the present invention;
FIG. 13 is a perspective view of a piston and seal embodying the present invention;
FIG. 14 is a perspective view of a piston embodying the present invention;
fig. 15 is a perspective view of a sealing cartridge embodying the present invention.
The reference numbers in the figures are:
1 a-a first plugging disc; 1 b-a second plugging disc; 1 c-connecting the waist; 1 d-anti-falling disc; 1 e-cyclic tag;
2 a-an introduction tube; 2 b-a placement head; 2b1 — first step groove; 2b 2-second step groove; 2b 3-third step groove; 2 c-an elastic abutting rod; 2d 1-sealed cylinder; 2d 5-vent; 2d2 — piston; 2d 3-hose; 2d 4-o-ring; 2 e-a flexible sealing cylinder;
3-true lumen;
4-false cavity.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
In order to solve the technical problems that the existing flexible stopper is easy to tear the interlayer and is easy to separate from the rupture opening and fall into the true cavity 3 when being delivered, the following preferred technical solutions are provided as shown in fig. 1 and 2:
an aortic dissection fracture self-expanding occluder comprises an occluder and an occluder dispenser, wherein the occluder comprises a first occluder disc 1a, a second occluder disc 1b, a connecting waist part 1c and an anti-release disc 1d, the first occluder disc 1a and the second occluder disc 1b are coaxially connected through the connecting waist part 1c, at least one anti-release disc 1d is arranged, when one anti-release disc 1d is arranged, the anti-release disc 1d is coaxially arranged at the other end of the first occluder disc 1a or the second occluder disc 1b through the connecting waist part 1c, and the diameter of the anti-release disc 1d is larger than that of the first occluder disc 1a or the second occluder disc 1 b; when anticreep dish 1d has a plurality ofly, anticreep dish 1d passes through connect waist 1c and be in with the axial setting in proper order first shutoff dish 1a and second shutoff dish 1 b's the other end, and keep away from first shutoff dish 1a or second shutoff dish 1 b's anticreep dish 1 d's diameter crescent.
Specifically, when an aortic dissection occurs, the aortic dissection treatment device comprises a true lumen 3 and a false lumen 4, a plugging piece is pushed to a fracture opening through a plugging device player, so that a first plugging disc 1a and a second plugging disc 1b are respectively positioned in the true lumen 4 and an anti-release disc 1d is positioned in the false lumen 4, the diameters of the first plugging disc 1a and the second plugging disc 1b are both larger than the diameter of the fracture opening, namely, a connecting waist part 1c can straddle the fracture opening, so that the first plugging disc 1a and the second plugging disc 1b can plug the fracture opening, and because the anti-release disc 1d is positioned in the false lumen 4 and the diameter of the anti-release disc 1d is larger than the diameters of the first plugging disc 1a and the second plugging disc 1b, when the fracture opening is enlarged, the first plugging disc 1a or the second plugging disc 1b positioned in the false lumen 4 is separated from the fracture opening and enters the true lumen 3, and because the diameter of the anti-release disc 1d is larger than the first plugging disc 1a and the second plugging disc 1b, namely, the anti-release disc 1d can not be separated from the fracture opening, so that the anti-release disc can be normally plugged at one side of the fracture opening, which is positioned in the false cavity 4, and the first plugging disc 1a or the second plugging disc 1b connected with the anti-release disc 1d through the connecting waist part 1c is plugged at one side of the fracture opening, which is positioned in the true cavity 3, so that the fracture opening is plugged again, and further, the danger caused by the fact that a plugging piece falls into the true cavity 3 can be effectively avoided;
when the anti-release disk 1d has a plurality of anti-release disks, when the fracture opening is expanded and larger than the anti-release disk 1d connected with the first plugging disk 1a or the connection waist portion 1c, the anti-release disk 1d is separated from the fracture opening and moved into the true chamber 3, and the diameter of the anti-release disk 1d away from the first plugging disk 1a or the second plugging disk 1b is gradually increased, that is, the anti-release disk 1d positioned in the dummy chamber 4 can abut against one side of the fracture opening, and the anti-release disk 1d positioned in the true chamber 3 can abut against the other side of the fracture opening, thereby completely plugging the fracture opening and preventing the plugging piece from falling into the true chamber 3.
Further, in order to solve the technical problem of how to stably block the blocking piece at the rupture, as shown in fig. 6, the following preferred technical solutions are provided:
the blocking piece is made of elastic material.
Specifically, because the shutoff piece is made for elastic material, the shutoff piece has certain elasticity promptly for first shutoff dish 1a and second shutoff dish 1b are when the shutoff is cracked, first shutoff dish 1a and second shutoff dish 1b can mutual elasticity butt and stabilize centre gripping fracture, thereby avoid the shutoff piece to break away from the fracture, and when putting the shutoff piece off at fracture department, first shutoff dish 1a or second shutoff dish 1b and anticreep dish 1d can contract and pass automatic the expansion behind the fracture, thereby reduce and erect the degree of difficulty.
Further, in order to solve the technical problem of how to shrink the plugging piece and push the plugging piece to the fracture by the plugging piece dispenser, as shown in fig. 4, the following preferred technical solutions are provided:
under the blocking piece along the axial shrink state, anticreep dish 1d along the axial parcel in along the axial shrink the outside of first blocking dish 1a or second blocking dish 1 b.
Specifically, the plugging member is in a contracted state before being released, so that the plugging member is conveniently delivered into the aorta, and the first plugging disc 1a in the outermost contracted state can pass through the fracture opening and then expand when the plugging member releasing device releases the plugging member, and the first plugging disc 1a or the second plugging disc 1b positioned on the inner side sequentially expands, so that the first plugging disc 1a and the second plugging disc 1b are respectively positioned in the true cavity and the false cavity, namely the connection waist portion 1c straddles the fracture opening, and the first plugging disc 1a and the second plugging disc 1b can plug the fracture opening.
Further, in order to solve the technical problem of how the stopper dispenser deploys the stopper at the rupture site, as shown in fig. 4 and 5, the following preferred technical solutions are provided:
the plugging piece dispenser comprises a plurality of plugging piece dispensers,
a control member;
the leading-in pipe 2a is arranged at the working end of a control piece, and the control piece is used for guiding the leading-in pipe 2a to enter a blood vessel and move to a rupture port;
the placement head 2b is coaxially arranged at the end part of the introducing pipe 2a, the inner end of the placement head 2b is sequentially and coaxially provided with a first step groove 2b1, a second step groove 2b2 and a third step groove 2b3 from outside to inside, the diameters of the first step groove 2b1, the second step groove 2b2 and the third step groove 2b3 are gradually reduced, and the first step groove 2b1, the second step groove 2b2 and the third step groove 2b3 sequentially and coaxially limit the anti-release disc 1d, the second blocking disc 1b and the first blocking disc 1a in a contraction state along the radial direction;
a rod pushing member, which is coaxially arranged in the introducing pipe 2a, and the working end of which can move coaxially towards the end of the introducing pipe 2 a;
the elastic abutting rod 2c is coaxially arranged at the working end of the rod piece pushing piece, and the elastic abutting rod 2c coaxially penetrates through the third stepped groove 2b3, the second stepped groove 2b2 and the first stepped groove 2b1 in sequence.
Specifically, when the plugging member is pushed to the aorta, the introducing tube 2a is controlled by the control member to enter the aorta, that is, the mounting head 2b installed at the end of the introducing tube 2a can restrain the plugging member in the contracted state, so that the plugging member can normally enter the aorta, and the plugging member in the contracted state is coaxially embedded in the first step groove 2b1, the second step groove 2b2 and the third step groove 2b3, that is, when the lever pushing member is actuated, the elastic abutting rod 2c pushes the plugging member in the contracted state along the axial direction of the introducing tube 2a, that is, when the anti-release disk 1d in the contracted state is separated from the first step groove 2b1 and is expanded after passing through the rupture port, and the first plugging disk 1a or the second plugging disk 1b positioned inside the anti-release disk 1d in the contracted state is still restrained by the second step groove 2b2 until the first plugging disk 1a or the second plugging disk 1b in the contracted state passes through the rupture port and is expanded, then the elastic abutting rod 2c continues to push until the plugging piece is completely separated from the third step groove 2b3, so that the second plugging disc 1b or the first plugging disc 1a is unfolded at the true cavity side of the fracture, and then the first plugging disc 1a and the second plugging disc 1b can plug the two sides of the fracture, and the plugging device is not easy to separate from the fracture and enters the true cavity.
Further, in order to solve the technical problem of how the rod pusher pushes the elastic abutting rod 2c in the mounting head 2b, as shown in fig. 5, the following preferred technical solutions are provided:
the rod piece pushing piece comprises a pushing piece,
a seal cylinder 2d1, the seal cylinder 2d1 being coaxially provided within the introduction tube 2 a;
the piston 2d2, the piston 2d2 is coaxially and slidably arranged in the sealing cylinder 2d1, the sealing cylinder 2d1 is internally divided into a first cavity close to the mounting head 2b and a second cavity far away from the mounting head 2b by the piston 2d2, and the elastic abutting rod 2c penetrates through the first cavity and is coaxially and fixedly connected with the piston 2d 2;
a hose 2d3, wherein the hose 2d3 is coaxially arranged in the inlet pipe 2a, and one end of the hose 2d3 penetrates the sealing cylinder 2d1 and is communicated with the second cavity.
Specifically, when the elastic abutting rod 2c needs to push the plugging piece in the axial direction, a liquid or gas medium is injected into the second cavity through the hose 2d3, because the piston 2d2 is coaxially and slidably disposed in the sealing cylinder 2d1, that is, the space of the second cavity is increased, and the volume of the first cavity is decreased, that is, the piston 2d2 can move in the direction of the mounting head 2b from 2a1, and because one end of the elastic abutting rod 2c is fixedly connected with one end of the piston 2d2 located in the first cavity, that is, when the piston 2d2 slides, the elastic abutting rod 2c can synchronously slide in the introducing pipe 2a, so that the elastic abutting rod 2c can eject the plugging piece from the mounting head 2b, and the plugging device can be plugged at the fracture.
Further, in order to solve the technical problem that the piston 2d2 in the sealing cylinder 2d1 can slide stably, as shown in fig. 5, the following preferred technical solutions are provided:
one end of the sealing cylinder 2d1 is provided with a vent hole 2d5 which is coaxial with the sealing cylinder, and the first cavity is communicated with the inside of the leading-in pipe 2a through a vent hole 2d 5.
Specifically, when the piston 2d2 slides in the sealing cylinder 2d1, that is, the volumes of the first cavity and the second cavity change, the sliding of the piston 2d2 is caused by injecting a liquid or gas medium into the second cavity, that is, the pressure in the second cavity always remains unchanged, but the pressure in the first cavity changes with the change of the volumes, which further causes the instability of the piston 2d2 during sliding, and the vent hole 2d5 is formed at one end of the sealing cylinder 2d1, and the first cavity is communicated with the inside of the inlet pipe 2a through the vent hole 2d5, that is, the pressure in the first cavity does not change with the change of the volumes, so that the sliding process of the piston 2d2 is more stable.
Further, in order to solve the technical problem that when the piston 2d2 slides in the seal cylinder 2d1, the gas or liquid in the second cavity cannot leak into the first cavity through the gap between the outer periphery of the piston 2d2 and the inner wall of the seal cylinder 2d1, as shown in fig. 5, 13 and 14, the following preferred technical solutions are provided:
the member propelling movement piece still includes sealing washer 2d4, the coaxial annular that is provided with on the outer periphery of piston 2d2, just sealing washer 2d4 coaxial cover is established on the annular, sealing washer 2d4 with the interior circumferential surface interference fit of sealing cylinder 2d 1.
Specifically, because the piston 2d2 can coaxially slide in the 2a1, that is, there is a gap between the circumferential surface of the piston 2d2 and the inner wall of the 2a1, and the sliding of the piston 2d2 is realized by filling a liquid or gas medium into the second cavity, that is, the liquid or gas easily enters the first cavity through the gap, and further the sliding effect of the piston 2d2 is affected, by providing a ring groove coaxial with the circumferential surface of the piston 2d2 on the circumferential surface of the piston 2d2 and coaxially sleeving the seal ring 2d4 on the ring groove, the piston 2d2 can coaxially slide in the seal cylinder 2d1 through the seal ring 2d4, and because the seal ring 2d4 is in interference fit with the inner circumferential surface of the seal cylinder 2d1, the gap between the circumferential surface of the piston 2d2 and the inner circumferential surface of the seal cylinder 2d1 can be prevented from affecting the sliding effect of the piston 2d 2.
Further, when the elastic abutting rod 2c coaxially penetrates the first stepped groove 2b1, a gap exists between the circumferential surface of the elastic abutting rod 2c and the through hole of the mounting head 2b, and when the plugging member is pushed, blood easily flows into the tape introducing pipe 2a through the gap, and in order to solve the technical problem, as shown in fig. 4 and 11, the following preferred technical solutions are provided:
the plugging piece dispenser further comprises a flexible sealing cylinder 2e, the flexible sealing cylinder 2e is coaxially arranged in the port of the leading-in pipe 2a, the elastic abutting rod 2c coaxially penetrates through the flexible sealing cylinder 2e and is in sliding fit with the flexible sealing cylinder 2e, and the flexible sealing cylinder 2e is in interference fit with the elastic abutting rod 2 c.
Specifically, by arranging the flexible sealing cylinder 2e at the port of the inlet tube 2a, arranging the positioning head 2b coaxially at the port of the inlet tube 2a, and making the elastic abutting rod 2c coaxially penetrate through the flexible sealing cylinder 2e and be in sliding fit with the flexible sealing cylinder 2e, the joint of the inlet tube 2a and the positioning head 2b is sealed by the flexible sealing cylinder 2e, and the gap between the circumferential surface of the elastic abutting rod 2c and the circumferential surface of the penetrating port of the positioning head 2b cannot enable blood to flow into the inlet tube 2a, so that the sealing performance of the inlet tube 2a is improved.
Further, when the first plugging disk 1a and the second plugging disk 1b are respectively plugged at both sides of the rupture port, when the blood flows in the aorta, the first plugging disk 1a or the second plugging disk 1b located in the true lumen 3 protrudes relative to the inner wall thereof, so that the rupture port is easily torn by the influence of the blood, and in order to solve the technical problem, as shown in fig. 8 and 9, the following preferred technical solutions are provided:
the facing away surfaces of the first and second plugging discs 1a, 1b are arched outward in the axial direction.
Specifically, by making the back surfaces of the first and second plugging discs 1a and 1b arch outward in the axial direction, i.e. when the first and second plugging discs 1a and 1b abut against the two sides of the rupture port respectively, the outside of the first or second plugging disc 1a or 1b located in the true lumen is relatively gentle along the axial direction of the blood vessel, thereby reducing the influence of the flowing blood on the occluder.
Further, when the first plugging disc 1a and the second plugging disc 1b are plugged at two sides of the fracture, because the aortic intima is thin, that is, the first plugging disc 1a and the second plugging disc 1b are liable to fail to stably plug the fracture, in order to solve the technical problem, as shown in fig. 6, the following preferred technical solutions are provided:
the facing surfaces of the first and second plugging discs 1a, 1b are uniformly arranged with ribs extending in the radial direction thereof.
Specifically, because the opposite surfaces of the first plugging disc 1a and the second plugging disc 1b are uniformly arranged with the ribs extending along the radial direction thereof, namely, when the first plugging disc 1a and the second plugging disc 1b are plugged at both sides of the fracture, the ribs of the opposite surfaces can stably engage with the fracture, preventing the first plugging disc 1a and the second plugging disc 1b from separating from the fracture.
In an alternative embodiment of the present invention, as shown in fig. 6 and 9, the circumferential surfaces of the first blocking disk 1a, the second blocking disk 1b and the connecting waist portion 1c are further provided with a ring-shaped mark 1e, the ring-shaped mark 1e is made of a radiopaque material, and during a surgery, the blocking piece is pushed to a fracture opening by the blocking piece dispenser, and the unfolding condition of the blocking piece is observed by rays, so that the first blocking disk 1a and the second blocking disk 1b are conveniently and accurately blocked at two sides of the fracture opening, and the success rate of the surgery can be further improved.
According to the device, the plugging piece is pushed to the fracture opening through the plugging piece player, the plugging piece is unfolded at the fracture opening, the anti-release disc 1d is unfolded in the false cavity, the first plugging disc 1a and the second plugging disc 1b are unfolded at two sides of the fracture opening and plug the fracture opening, and therefore the problem that the plugging piece falls into the true cavity due to expansion of the fracture opening can be effectively solved;
the foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The aortic dissection fracture self-expanding occluder is characterized by comprising an occluder and an occluder releasing device, wherein the occluder comprises a first occluder disc (1a), a second occluder disc (1b), a connecting waist part (1c) and an anti-release disc (1d), the first occluder disc (1a) and the second occluder disc (1b) are coaxially connected through the connecting waist part (1c), at least one anti-release disc (1d) is arranged, when one anti-release disc (1d) is arranged, the anti-release disc (1d) is coaxially arranged at the other end of the first occluder disc (1a) or the second occluder disc (1b) through the connecting waist part (1c), and the diameter of the anti-release disc (1d) is larger than that of the first occluder disc (1a) or the second occluder disc (1 b); when anticreep dish (1d) has a plurality ofly, anticreep dish (1d) passes through connect waist (1c) and in proper order with the axial setting in the other end of first shutoff dish (1a) and second shutoff dish (1b), and keep away from the diameter of anticreep dish (1d) of first shutoff dish (1a) or second shutoff dish (1b) increases gradually.
2. The aortic dissection fracture self-expanding occluder of claim 1, wherein the occluder is made of an elastomeric material.
3. An aortic dissection self-expanding occluder according to claim 2, wherein in the axially contracted state of the occluder, the anti-release disk (1d) axially wraps around the outside of the axially contracted first or second occluding disk (1a, 1 b).
4. The aortic dissection self-expanding occluder of claim 3, wherein the occluder dispenser comprises,
a control member;
the introducing pipe (2a) is arranged at the working end of the control piece, and the control piece is used for guiding the introducing pipe (2a) to enter the blood vessel and move to the rupture port;
the placement head (2b) is coaxially arranged at the end part of the introducing pipe (2a), the inner end of the placement head (2b) is sequentially and coaxially provided with a first step groove (2b1), a second step groove (2b2) and a third step groove (2b3) from outside to inside, the diameters of the first step groove (2b1), the second step groove (2b2) and the third step groove (2b3) are gradually reduced, and the first step groove (2b1), the second step groove (2b2) and the third step groove (2b3) sequentially and coaxially limit the anti-falling disc (1d), the second blocking disc (1b) and the first blocking disc (1a) in a contraction state along the radial direction;
a rod pushing member, which is coaxially arranged in the introducing pipe (2a), and the working end of which can move coaxially towards the end of the introducing pipe (2 a);
the elastic abutting rod (2c) is coaxially arranged at the working end of the rod piece pushing piece, and the elastic abutting rod (2c) coaxially and sequentially penetrates through the third stepped groove (2b3), the second stepped groove (2b2) and the first stepped groove (2b 1).
5. The aortic dissection self-expanding occluder of claim 4, wherein the rod pusher comprises,
a sealing cylinder (2d1), the sealing cylinder (2d1) being coaxially arranged within the introduction tube (2 a);
the piston (2d2), the piston (2d2) is coaxially arranged in the sealing cylinder (2d1) in a sliding manner, the sealing cylinder (2d1) is internally divided into a first cavity close to the mounting head (2b) and a second cavity far away from the mounting head (2b) by the piston (2d2), and the elastic butting rod (2c) penetrates through the first cavity and is coaxially and fixedly connected with the piston (2d 2);
a hose (2d3), wherein the hose (2d3) is coaxially arranged in the inlet pipe (2a), and one end of the hose (2d3) penetrates through the sealing cylinder (2d1) and is communicated with the second cavity.
6. The aortic dissection self-expanding occluder of claim 5, wherein one end of the sealing cylinder (2d1) is provided with a vent (2d5) coaxial therewith, and the first cavity communicates with the interior of the inlet tube (2a) through the vent (2d 5).
7. The aortic dissection fracture self-expanding occluder of claim 5, wherein the rod pushing member further comprises a sealing ring (2d4), wherein an annular groove is coaxially formed on the outer circumferential surface of the piston (2d2), the sealing ring (2d4) is coaxially sleeved on the annular groove, and the sealing ring (2d4) is in interference fit with the inner circumferential surface of the sealing cylinder (2d 1).
8. The aortic dissection self-expanding occluder of claim 4, wherein the occluder dispenser further comprises a flexible sealing cylinder (2e), the flexible sealing cylinder (2e) is coaxially disposed in the port of the inlet tube (2a), the resilient abutment rod (2c) coaxially penetrates the flexible sealing cylinder (2e) and slidably engages therewith, and the flexible sealing cylinder (2e) is in interference fit with the resilient abutment rod (2 c).
9. Aortic dissection self-expanding occluder of claim 1, wherein the facing away surfaces of the first and second occluding disks (1a, 1b) are arched axially outwards.
10. An aortic dissection self-expanding occluder according to claim 1 wherein the facing surfaces of the first and second occluding discs (1a, 1b) are uniformly provided with ribs extending radially therealong.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110943718.4A CN113476100B (en) | 2021-08-17 | 2021-08-17 | Aortic dissection fracture self-expanding plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110943718.4A CN113476100B (en) | 2021-08-17 | 2021-08-17 | Aortic dissection fracture self-expanding plugging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113476100A true CN113476100A (en) | 2021-10-08 |
| CN113476100B CN113476100B (en) | 2022-09-30 |
Family
ID=77946769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110943718.4A Active CN113476100B (en) | 2021-08-17 | 2021-08-17 | Aortic dissection fracture self-expanding plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113476100B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090299402A1 (en) * | 2005-11-14 | 2009-12-03 | Jms Co., Ltd. | Instrument for dilating blood channel and instrument for treating aortic dissection |
| US20140005714A1 (en) * | 2012-01-06 | 2014-01-02 | Inceptus Medical, Inc. | Multilayered expandable braided devices and methods of use |
| CN108143447A (en) * | 2017-12-26 | 2018-06-12 | 许尚栋 | A kind of dissection of aorta distal end cut plugging device |
| CN210228210U (en) * | 2018-01-25 | 2020-04-03 | 杭州唯强医疗科技有限公司 | Aortic dissection breach plugging device |
| CN112998770A (en) * | 2019-12-20 | 2021-06-22 | 先健科技(深圳)有限公司 | Plugging device and plugging system |
| WO2021128939A1 (en) * | 2019-12-24 | 2021-07-01 | 上海微创心脉医疗科技(集团)股份有限公司 | Dissection rupture occlusion system |
-
2021
- 2021-08-17 CN CN202110943718.4A patent/CN113476100B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090299402A1 (en) * | 2005-11-14 | 2009-12-03 | Jms Co., Ltd. | Instrument for dilating blood channel and instrument for treating aortic dissection |
| US20140005714A1 (en) * | 2012-01-06 | 2014-01-02 | Inceptus Medical, Inc. | Multilayered expandable braided devices and methods of use |
| CN108143447A (en) * | 2017-12-26 | 2018-06-12 | 许尚栋 | A kind of dissection of aorta distal end cut plugging device |
| CN210228210U (en) * | 2018-01-25 | 2020-04-03 | 杭州唯强医疗科技有限公司 | Aortic dissection breach plugging device |
| CN112998770A (en) * | 2019-12-20 | 2021-06-22 | 先健科技(深圳)有限公司 | Plugging device and plugging system |
| WO2021128939A1 (en) * | 2019-12-24 | 2021-07-01 | 上海微创心脉医疗科技(集团)股份有限公司 | Dissection rupture occlusion system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113476100B (en) | 2022-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5443449A (en) | Cholangiography catheter | |
| US20210128165A1 (en) | Systems and methods for treating aneurysms | |
| US7731155B2 (en) | Male luer connector | |
| US6818008B1 (en) | Percutaneous puncture sealing method | |
| US6527761B1 (en) | Methods and devices for obstructing and aspirating lung tissue segments | |
| JP4564964B2 (en) | Locator and closure device and method of use | |
| US6699261B1 (en) | Blood vessel sealing system | |
| US8747435B2 (en) | Drug eluting vascular closure devices and methods | |
| US9107645B2 (en) | Apparatus and methods for sealing a puncture in tissue | |
| US4404971A (en) | Dual balloon catheter | |
| US7363927B2 (en) | Removable blood vessel occlusion device | |
| EP2950722B1 (en) | Vascular closure device with bleed back lumen obstructable by a sleeve | |
| US20110106147A1 (en) | Percutaneous puncture sealing system | |
| US20220354506A1 (en) | Gas inflation devices, systems, and methods | |
| EP0893096B1 (en) | Endoscopic kit for ligation | |
| CN113476100B (en) | Aortic dissection fracture self-expanding plugging device | |
| WO2001070308A1 (en) | Catheter introducer assembly with dual hemostatic valve | |
| CN115845233A (en) | Catheter with releasable tip | |
| CN208838264U (en) | The accurate implant system of the bracket of branch vessel | |
| CN207152616U (en) | A kind of Interventional Hemostasis device | |
| US20140236224A1 (en) | Detachable sealing plug with safety release mechanism and methods | |
| US11701490B2 (en) | Liquid embolic delivery device | |
| CN215821011U (en) | Medical device for implanting an occluder | |
| US20230012812A1 (en) | Medical instrument set, delivery system, and embolic device delivery medical system | |
| WO2023048083A1 (en) | Embolus-loaded catheter and medical device set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220905 Address after: 450000 East Construction Road No. 50, Erqi District, Zhengzhou City, Henan Province Applicant after: THE FIRST AFFILIATED HOSPITAL OF ZHENGZHOU University Address before: 450003 No. five, No. 1, weft Road, Henan, Zhengzhou Applicant before: HENAN PROVINCIAL CHEST Hospital |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |