CN116807531A - Plugging device conveying device - Google Patents
Plugging device conveying device Download PDFInfo
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- CN116807531A CN116807531A CN202310775437.1A CN202310775437A CN116807531A CN 116807531 A CN116807531 A CN 116807531A CN 202310775437 A CN202310775437 A CN 202310775437A CN 116807531 A CN116807531 A CN 116807531A
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- ring
- outer sleeve
- sheath
- locking
- screwing
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- 230000006835 compression Effects 0.000 claims abstract description 80
- 238000007906 compression Methods 0.000 claims abstract description 80
- 230000002439 hemostatic effect Effects 0.000 claims abstract description 30
- 238000011084 recovery Methods 0.000 claims description 28
- 238000004804 winding Methods 0.000 claims description 15
- 239000003550 marker Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 10
- 230000008093 supporting effect Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 16
- 208000035187 Ring chromosome 14 syndrome Diseases 0.000 description 15
- 210000005248 left atrial appendage Anatomy 0.000 description 12
- 206010003658 Atrial Fibrillation Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- -1 Polytetrafluoroethylene Polymers 0.000 description 1
- 208000001435 Thromboembolism Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 210000001008 atrial appendage Anatomy 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000023597 hemostasis Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—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
- A61B2017/00601—Implements entirely comprised between the two sides 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
- A61B2017/00606—Implements H-shaped in cross-section, i.e. with occluders on both sides 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
- A61B2017/00623—Introducing or retrieving devices therefor
-
- 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
- A61B2017/00646—Type of implements
- A61B2017/00654—Type of implements entirely comprised between the two sides 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
- A61B2017/00672—Locating means therefor, e.g. bleed back lumen
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Cardiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The application provides an occluder delivery device comprising: the conveying sheath comprises a sheath body and a locking joint, and the locking joint is fixedly arranged at the proximal end of the sheath body; the outer sleeve is sleeved on the outer periphery of the sheath tube body, the outer sleeve comprises an outer sleeve tube body and a joint assembly, the joint assembly is used for connecting the outer sleeve tube body and the conveying sheath, the joint assembly comprises a screwing cap, the screwing cap comprises a screwing compression ring and a locking ring, the screwing compression ring and the locking ring can rotate relatively and independently along the axial direction of the screwing cap and are fixedly connected with the screwing cap in the axial direction of the screwing cap, the screwing compression ring is used for rotating a hemostatic pad of the compression joint assembly, and the locking ring is used for being clamped in the locking joint through rotation after being butted with the locking joint. The screwing compression ring and the locking ring of the screwing cap can rotate relatively independently, one side rotates to avoid interference with the other side, the conveying sheath is ensured not to be damaged due to torsion, and the service life of the plugging device conveying device and the reliability and safety of plugging operation are improved.
Description
Technical Field
The application relates to the technical field of heart occluder conveying devices, in particular to an occluder conveying device.
Background
Left atrial appendage occlusion is a procedure in which the left atrial appendage is occluded by an occluder to prevent thrombus formation in the left atrial appendage during atrial fibrillation, thereby reducing the risk of long-term disability or death in patients with atrial fibrillation due to thromboembolism. The occluder conveying device is needed in the process of conveying the occluder to the left auricle, and the pusher for loading the occluder in the conveying process needs to move back and forth or rotate in the conveying sheath under the control of an operator; the operator also needs to compress the hemostatic pad on the outer sleeve by screwing action to achieve hemostasis, and the outer sleeve is sleeved outside the delivery sheath. The operation of the pusher and the outer sleeve is easy to enable the conveying sheath to rotate along with the pusher, so that torsion deformation damage of the conveying sheath is easy to be caused, and the service life of the conveying device of the plugging device and the reliability and safety of plugging operation are affected.
Thus, a need exists for a new occluder delivery device.
Disclosure of Invention
The application provides an occluder delivery device comprising:
the conveying sheath comprises a sheath body and a locking joint, and the locking joint is fixedly arranged at the proximal end of the sheath body;
the outer sleeve is sleeved on the outer periphery of the sheath tube body, the outer sleeve comprises an outer sleeve tube body and a joint assembly, the joint assembly is used for connecting the outer sleeve tube body and the conveying sheath, the joint assembly comprises a screwing cap, the screwing cap comprises a screwing compression ring and a locking ring, the screwing compression ring and the locking ring can rotate relatively and independently along the axial direction of the screwing cap and are fixedly connected with the screwing cap in the axial direction of the screwing cap, the screwing compression ring is used for rotating a hemostatic pad of the compression joint assembly, and the locking ring is used for being clamped in the locking joint through rotation after being butted with the locking joint.
According to the plugging device conveying device, the joint assembly of the outer sleeve is provided with the screwing cap, and the screwing compression ring and the locking ring in the screwing cap can rotate relatively and independently, so that one rotation does not interfere the other. In the process of conveying the plugging device by adopting the plugging device conveying device, the sheath tube body of the conveying sheath is inserted into the outer sleeve tube body, and the locking joint and the locking ring are mutually clamped after being butted by rotating, so that the relative fixation between the conveying sheath and the outer sleeve is ensured, and the phenomenon that the conveying sheath moves or rotates along with the plugging device when the pushing device drives the plugging device to move in the conveying sheath is avoided. When the operation of stopping bleeding is needed, the compression ring is screwed in a rotating way, the hemostatic pad arranged in the joint assembly is compressed in a rotating way, the circumferential disturbance to the locking ring is not generated in the rotating operation, the conveying sheath cannot rotate along with the locking ring, and the conveying sheath is prevented from being damaged due to torsion. The service life of the plugging device conveying device and the reliability and safety of plugging operation are improved.
In some alternative embodiments of the present application, the screw compression ring and the locking ring are rotatably and annularly clamped by annular clamping grooves and annular buckles with matched sizes.
In some alternative embodiments of the application, the inner periphery of the locking ring is formed with a chuck which is located at the end facing away from the screwing compression ring and protrudes radially along the locking ring itself,
the locking joint comprises a sleeve body, a locking groove extending along the circumferential direction of the sleeve body is formed at the end part of the sleeve body, which is close to the locking ring, the clamping head is matched with the locking groove in size, and a bayonet is formed between the middle groove section and the tail groove section of the locking groove, so that when the locking ring rotates relative to the locking joint, the clamping head is clamped into the locking groove and moves along the locking groove, and is clamped and fixed at the tail groove section of the locking groove after passing through the bayonet.
In some alternative embodiments of the application, the inside of the screw compression ring is formed with a compression post, a first internal thread and a barb,
the axial of the compression column is axially coincided with the screwing cap, the compression column is used for compressing the hemostatic pad, the first internal thread is arranged opposite to the part, close to the locking ring, of the periphery of the compression column, and the barb is formed at a port, back to the locking ring, of the screwing compression ring.
In some alternative embodiments of the application, the joint assembly further comprises:
the compression ring is screwed on the inner side of the locking ring, the compression ring is screwed on the outer side of the compression ring, the compression ring is screwed on the inner side of the compression ring, the compression ring is screwed on the compression ring, and the compression ring is screwed on the compression ring;
the pipe pressure screw cap is in threaded connection with one end of the joint seat back to the screwing cap, one end of the outer sleeve pipe body is inserted into the conveying pipe cavity, and the outer sleeve pipe body is fixedly connected with the joint seat through the pipe pressure screw cap.
In some alternative embodiments of the present application, the outer sleeve body comprises:
one end of the straight pipe section of the outer sleeve is connected with the joint component,
the outer sleeve bent pipe section is positioned at one end of the outer sleeve straight pipe section, which is opposite to the joint assembly, and is communicated with the outer sleeve straight pipe section, and a first bent pipe section and a second bent pipe section are sequentially arranged from the proximal end of the outer sleeve pipe body to the distal end of the outer sleeve pipe body, wherein the first central axis of the first bent pipe section and the second central axis of the second bent pipe section are different in surface;
the hose head is positioned at one end of the outer sleeve bent pipe section far away from the outer sleeve straight pipe section.
In some alternative embodiments of the present application, the outer casing comprises a first inner layer, a first intermediate layer, and a first outer layer, the first intermediate layer sequentially forming a first development zone, a first winding zone, and a first support zone from a distal end of the outer casing to a proximal end of the outer casing, the first development zone comprising a first development ring disposed around a periphery of the first inner layer, the first winding zone comprising a first elastic coil wound around the first inner layer, the first support zone comprising a first mesh-like woven structure sleeved outside the first inner layer,
the straight pipe section of the outer sleeve is correspondingly positioned in the first supporting area, the bent pipe section of the outer sleeve is correspondingly positioned in the first flexible area, and the hose head is correspondingly positioned in the first developing area.
In some alternative embodiments of the present application, the length of the sheath shaft is greater than the length of the outer sheath shaft, and the distal end of the sheath shaft extends beyond the distal end of the outer sheath shaft after the delivery sheath is fixedly coupled to the outer sheath.
In some alternative embodiments of the present application, the wall of the sheath body includes a second inner layer, a second intermediate layer, and a second outer layer, the second intermediate layer sequentially forming a second development zone and a second support zone from the distal end of the sheath to the proximal end of the sheath, the second development zone including a second development ring disposed around the outer periphery of the second inner layer, the second support zone including a second mesh braid structure sleeved outside the second inner layer.
In some alternative embodiments of the present application, the second developer ring is circumferentially formed with at least one break extending axially along the sheath body itself.
In some alternative embodiments of the application, a second winding region is further disposed between the second development region and the second support region, the second winding region comprising a first elastic coil wound outside the second inner layer.
In some alternative embodiments of the application, the distal end of the sheath body is formed with a recovery portion on the side of the sheath body on its own axis where the second developing ring faces away from the second mesh braid, the recovery portion comprising an opening for the entry and exit of the occluder.
In some alternative embodiments of the present application, the recycling portion includes a plurality of arcuate flaps circumferentially spaced along the sheath body, top edges of the arcuate flaps enclosing to form an opening perpendicular to the axial direction of the sheath body, and a notch is formed between two adjacent arcuate flaps and extends from the opening to the second developing ring axially along the sheath body.
In some alternative embodiments of the present application, the opening is disposed obliquely, the edge of the opening encloses a curved surface inclined toward the second developing ring, and the recycling portion is formed with a bevel scoop.
In some alternative embodiments of the application, the occluder delivery device further comprises a pusher comprising:
an operating handle located at the proximal end of the delivery sheath;
the connector is used for being fixedly connected with the plugging device;
the pushing rod is arranged between the operating handle and the connector, one end of the pushing rod is connected with the operating handle, the other end of the pushing rod is connected with the connector, a marking area is arranged on the pushing rod, which is close to the operating handle, and comprises a plurality of marking pieces, and each marking piece can move back and forth in the marking area in order to mark the positions of different parts of the plugging device.
In some alternative embodiments of the present application, the push rod is a wire rope rod,
the marker is an elastic ring collar, or a metal ring collar with internal threads formed on the inner circumference side.
In some alternative embodiments of the present application, the marking features of the same type of marking elements are different from each other to correspond to different portions of the marking occlusion device, and the marking features are selected from at least one of a peripheral contour shape, a surface marking number, and a color.
Drawings
FIG. 1 is a front view of a block diagram of one embodiment of an occluder delivery device in accordance with the present application;
fig. 2 is a bottom view of a screw cap in one embodiment of the occluder delivery device provided by the present application
FIG. 3 is a cross-sectional view of the structure of FIG. 2 taken along the direction B-B;
FIG. 4 is an exploded view of the joint assembly 22 of FIG. 1;
fig. 5 is a bottom view of a hub in one embodiment of an occluder delivery device in accordance with the present application;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is a front view of an outer sleeve of one embodiment of an occluder delivery device in accordance with the present application;
FIG. 8 is a front view of a delivery sheath in one embodiment of an occluder delivery device in accordance with the present application;
FIG. 9 is a front view of a locking joint of a delivery sheath in one embodiment of an occluder delivery device in accordance with the present application;
fig. 10 is a perspective view of a process of rotating and clamping a locking ring and a locking joint of a screwing cap in an embodiment of the occluder delivery device provided by the present application;
FIG. 11 is a schematic view of the occlusion device being placed in the left atrial appendage tissue by occlusion;
FIG. 12 is a perspective view of an outer sleeve body of one embodiment of an occluder delivery device in accordance with the present application;
fig. 13 is a schematic view of a structure of an occluder delivery device according to an embodiment of the present application with a first outer layer removed by a sleeve;
FIG. 14 is a schematic view of a structure of an occluder delivery device according to an embodiment of the present application with the second outer layer removed by the sheath;
FIG. 15 is a schematic view of a second developing ring on a sheath in an embodiment of an occluder delivery device in accordance with the present application;
FIG. 16 is a schematic view showing the structure of a recovery portion at the distal end of a delivery sheath in an embodiment of an occluder delivery device in accordance with the present application;
FIG. 17 is a schematic view of an occluder delivery device according to an embodiment of the present application, wherein the recovery portion at the distal end of the delivery sheath is attached to the left atrial appendage tissue;
FIG. 18 is a schematic view showing a process of recovering an occluder through a recovering portion at the distal end of a delivery sheath in an embodiment of an occluder delivery device in accordance with the present application;
FIG. 19 is a schematic view showing the structure of a recovery portion at the distal end of a delivery sheath in another embodiment of an occluder delivery device in accordance with the present application;
FIG. 20 is a schematic view of a process of recovering an occluder through a recovering portion at the distal end of a delivery sheath in another embodiment of an occluder delivery device in accordance with the present application;
FIG. 21 is a front view of the occluder in its original state;
fig. 22 is a front view of the pusher in one embodiment of the occluder delivery device provided by the present application;
FIG. 23 is a front view of the occluder in an expanded state;
fig. 24 is a schematic view of the occluding device being loaded into a delivery sheath in vitro.
Reference numerals illustrate:
delivery sheath-1; sheath tube body-11; a recovery unit (111); arc-shaped petals-1111; notch-1112; bevel scoop-1113;
a locking joint-12; a sleeve body-121; locking groove-122; a bayonet-1221; a groove middle section-a; a groove tail section-b; a hemostatic valve-13; an end face-131 of the hemostatic valve; a second developing ring-14; fracture-141;
an outer sleeve-2; a jacket pipe body-21; outer sleeve straight pipe section-211; outer casing bend section-212; first bend section-2121; second bend section-2122; short straight pipe section-213; hose head-214; first developing ring-215;
a joint assembly-22; screwing the cap-221;
screwing the compression ring-222; a press column-2221; first internal thread-2222; barb-2223; tube hole-2224; first annular card slot-2225; first annular clasp-2226;
a locking ring-223; a second annular clasp-2231; a second annular clamping groove-2232; chuck-2233;
hemostatic pad-224; a three-way valve-225; a nipple mount-226; extension tube segment-2261; extension tube clasp-2262; a clip cap-227; first external thread-2263; upper lid catch-2264; hemostatic pad holding cavity-2265; delivery lumen-2266; pipe pressure nut-228;
pusher-3; an operation handle-31; a connector-32; a push rod-33; a marker region-M; a marker-331;
a plugging device-4; a hook-41; a mesh-shaped blocking body-42; an externally threaded anchor head-43; left disc anchor head-44; left tray body-45; waist-46; right disc-47;
left auricle tissue-5;
a first development zone-A1; a first winding region-A2; a first support zone-A3;
a second development zone-B1; and a second support region-B3.
Detailed Description
The following describes the technical scheme of the present application in detail with reference to fig. 1 to 24.
The application provides an occluder 4 delivery device comprising:
the delivery sheath 1 comprises a sheath body 11 and a locking joint 12, wherein the locking joint 12 is fixedly arranged at the proximal end of the sheath body 11;
the outer sleeve 2 is sleeved on the outer peripheral side of the sheath pipe body 11, the outer sleeve 2 comprises an outer sleeve pipe body 21 and a joint component 22, the joint component 22 is used for connecting the outer sleeve pipe body 21 with the delivery sheath 1, the joint component 22 comprises a screwing cap 221, the screwing cap 221 comprises a screwing compression ring 222 and a locking ring 223, the screwing compression ring 222 and the locking ring 223 can rotate relatively and independently along the axial direction of the screwing cap 221 and are fixedly connected with the screwing cap 221 in the axial direction of the screwing cap 221, the screwing compression ring 222 is used for rotationally compressing a hemostatic pad 224 of the joint component 22, and the locking ring 223 is used for being clamped in the locking joint 12 through rotation after being butted with the locking joint 12.
According to the occluder 4 conveying device provided by the application, the joint assembly 22 of the outer sleeve 2 is provided with the screwing cap 221, and the screwing compression ring 222 and the locking ring 223 in the screwing cap 221 can rotate relatively independently, so that one rotation does not interfere with the other. In the process of conveying the plugging device 4 by adopting the plugging device 4 conveying device, the sheath tube body 11 of the conveying sheath 1 is inserted into the outer sleeve tube body 21, the locking joint 12 and the locking ring 223 are mutually clamped after being butted and rotated, the screwing compression ring 222 and the locking ring 223 are fixedly connected in the axial direction of the screwing cap 221, the relative fixation between the conveying sheath 1 and the outer sleeve tube 2 is ensured, and the phenomenon that the conveying sheath 1 moves or rotates along when the pusher 3 drives the plugging device 4 to move in the conveying sheath 1 is avoided. When a hemostatic operation is required, the compression ring 222 is rotated to compress the hemostatic pad 224 disposed in the connector assembly 22, and the rotation operation does not generate circumferential disturbance to the locking ring 223, so that the delivery sheath 1 does not follow rotation, and the delivery sheath 1 is ensured not to be damaged due to torsion. The service life of the conveying device of the plugging device 4 and the reliability and safety of plugging operation are improved.
In some alternative embodiments of the application, the occluder 4 delivery device further comprises a pusher 3, the pusher 3 being adapted to load the occluder 4 and deliver the occluder 4 through the lumen of the delivery sheath 1 to the left atrial appendage tissue 5.
In fig. 1, the sheath tube 11 extending into the outer tube 21 is hidden for clarity of illustration of the entry of the pusher 3 into the outer tube 21.
The proximal end of any one of the structures in the present application refers to the end that is closer to the operator in the occlusion operation, and the distal end of any one of the structures refers to the end that is farther from the operator and closer to the subject in the occlusion operation.
In some alternative embodiments of the present application, the screw compression ring 222 and the locking ring 223 are rotatably and annularly snapped together by mating sized annular snap grooves and annular snaps. In these embodiments, the relative independent rotation between the screw compression ring 222 and the locking ring 223 is achieved by a rotatable annular snap between an annular snap groove and an annular catch.
As shown in fig. 2 and 3, a portion of the outer peripheral side of the screw compression ring 222 near the lock ring 223 is formed with a first annular locking groove 2225 and a first annular locking buckle 2226 in succession in the axial direction of the screw compression ring 222 itself. A portion of the inner peripheral side of the lock ring 223 adjacent to the screw compression ring 222 is formed with a second annular click 2232 and a second annular click 2231 in succession in the axial direction of the lock ring 223 itself. The first annular clamping groove 2225 and the second annular clamping groove 2231 are correspondingly and annularly clamped, and the first annular clamping groove 2226 and the second annular clamping groove 2232 are correspondingly and annularly clamped, so that the screwing compression ring 222 and the locking ring 223 are fixedly connected in the axial direction of the screwing cap 221 and rotate relatively independently.
As shown in fig. 3, a compression column 2221, a first internal thread 2222 and a barb 2223 are formed inside the screwing compression ring 222, the axial direction of the compression column 2221 axially coincides with the screwing cap 221, the compression column 2221 is used for compressing the hemostatic pad 224, the first internal thread 2222 is oppositely arranged with the part, close to the locking ring 223, of the periphery of the compression column 2221, and the barb 2223 is formed at the port, facing away from the locking ring 223, of the screwing compression ring 222. The press column 2221 has a hollow structure, and the press column 2221 is axially formed with a tube hole 2224.
Referring to fig. 1 to 7, the joint assembly 22 further includes:
the joint seat 226 is arranged on one side of the screwing compression ring 222, which is opposite to the locking ring 223, a first external thread 2263 matched with the first internal thread 2222 is formed on the part, close to the screwing compression ring 222, of the outer periphery of the joint seat 226, an upper cover buckle 2264 protruding along the radial direction of the joint seat 226 is formed on the outer periphery of the joint seat 226, the upper cover buckle 2264 is clamped with the barb 2223, a hemostatic pad accommodating cavity 2265 and a conveying pipe cavity 2266 which are communicated are formed in the joint seat 226, the hemostatic pad accommodating cavity 2265 is closer to the screwing compression ring 222 than the conveying pipe cavity 2266, and the hemostatic pad 224 is arranged in the hemostatic pad accommodating cavity 2265;
the pipe pressure nut 228 is in threaded connection with one end of the joint seat 226, which is opposite to the screwing cap 221, one end of the outer sleeve pipe body 21 is inserted into the conveying pipe cavity 2266, and the outer sleeve pipe body 21 is fixedly connected with the joint seat 226 through the pipe pressure nut 228.
In these embodiments, the upper cover snap 2264 of the hub 226 snaps into engagement with the barb 2223 of the screw compression ring 222, such that the hub 226 and the screw compression ring 222 are connected. When the hemostatic operation is performed, the screwing compression ring 222 is rotated relative to the joint seat 226, so that the screwing compression ring 222 rotates towards the direction of the tube compression nut 228 through the cooperation between the first internal thread 2222 and the first external thread 2263, and the compression column 2221 formed inside the screwing compression ring 222 compresses the hemostatic pad 224 arranged in the hemostatic pad accommodating cavity 2265 in the rotating and advancing process.
In some embodiments, the joint seat 226 is further formed with an extension tube section 2261, the extension tube section 2261 is communicated with the delivery lumen 2266, and is disposed beside the delivery lumen 2266, an extension tube clip 2262 is formed on the outer peripheral side of the extension tube section 2261, the extension tube clip 2262 is connected with the infusion tube, and a clip cap 227 is sleeved at the joint, so as to be beneficial to preventing liquid leakage. The three-way valve 225 is connected to the extension tube segment 2261 by a fluid line.
In some alternative embodiments of the present application, referring to fig. 3 and 8 to 10, a chuck 2233 is formed on the inner circumferential side of the locking ring 223, and the chuck 2233 is located at one end facing away from the screw compression ring 222 and protrudes radially along the locking ring 223 itself,
the locking joint 12 comprises a sleeve body 121, a locking groove 122 extending along the circumferential direction of the sleeve body 121 is formed at the end of the sleeve body 121 close to the locking ring 223, a clamping head 2233 is matched with the locking groove 122 in shape and size, a bayonet 1221 is formed between a groove middle section a and a groove tail section b of the locking groove 122, so that when the locking ring 223 rotates relative to the locking joint 12, the clamping head 2233 is clamped into the locking groove 122 and moves along the locking groove 122, and is clamped and fixed at the groove tail section b of the locking groove 122 after passing through the bayonet 1221. In these embodiments, the width of the bayonet 1221 is smaller than the width of the middle section a and the tail section b, when the locking ring 223 is rotated, the clamping head 2233 enters from the notch 1112 of the locking slot 122, and after passing through the middle section a, the clamping head 2233 struts the bayonet 1221 to overcome the blocking of the protrusion of the bayonet 1221, and after the clamping head 2233 enters into the tail section b, the bayonet 1221 recovers the shape, so that the clamping head 2233 is prevented from sliding out from the tail section b, the relative fixation between the delivery sheath and the outer sleeve 2 is ensured, and the torsion and the deformation of the delivery sheath 1 are avoided.
A hemostatic valve 13 is connected to the end of the locking joint 12 facing away from the sheath tube 11. The hemostatic effect of the hemostatic valve 13 is achieved by screwing a sealing ring in the compression hemostatic valve.
In some alternative embodiments of the present application, the length of the sheath body 11 is greater than the length of the outer sheath body 21, and the distal end of the sheath body 11 extends beyond the distal end of the outer sheath body 21 after the delivery sheath is fixedly coupled to the outer sheath 2.
In the case of these embodiments of the present application,as shown in fig. 11The occluder 4 is usually provided with hooks 41 beside its net-like occluding body 42 and the bottom of the occluder 4 is provided with an externally threaded anchor head 43, which is screwed with a threaded joint in the pusher 3. The length of the sheath 11 in the current occluder 4 delivery device is less than the length of the outer sheath 21. The occluder 4 needs to enter the inner lumen of the outer sleeve body 21 to move a certain distance after being pushed out of the delivery sheath 1 by the pusher 3, and finally reaches the left auricle tissue 5. In the process that the inner lumen of the outer sleeve body 21 moves, the hooks 41 easily generate scratch friction with the inner wall of the outer sleeve body 21, the outer sleeve body 21 is easily scratched, and batting scraped from the inner wall of the outer sleeve body 21 is also easily brought into the cardiovascular system, so that the risk of major operation safety is generated. And for some occluders 4 made of degradable materials, the self-elasticity is poor, the deformability is poor, and the sealing can be caused by the conveying friction in the outer sleeve body 21 for a long timeIt is difficult to restore the original shape of the stopper 4. Therefore, in these embodiments, the length of the sheath tube 11 is greater than that of the outer sleeve tube 21, and the occluder 4 can be directly delivered from the inside of the sheath tube 11 to the left auricle tissue 5 without passing through the inner lumen of the outer sleeve tube 21, so that the delivery friction in the outer sleeve tube 21 is avoided, the shape of the occluder 4 is prevented from being changed due to the friction, the delivery safety and the shape of the occluder 4 are ensured to be unchanged, and the safety to the reliability of the occlusion operation are ensured.
As shown in fig. 7 and 12, in some alternative embodiments of the present application, the outer sleeve 21 includes:
the outer sleeve straight tube section 211, one end of which is connected to the joint assembly 22,
an outer cannula bend section 212 positioned at an end of the outer cannula straight section 211 opposite the connector assembly 22 and in communication with the outer cannula straight section 211, the outer cannula bend section 212 having a first bend section 2121 and a second bend section 2122 disposed in sequence from a proximal end of the outer cannula body 21 to a distal end of the outer cannula body 21, wherein a first central axis of the first bend section 2121 is different from a second central axis of the second bend section 2122;
a hose head 214 located at an end of the outer tube bend section 212 remote from the outer tube straight section 211.
In these embodiments, a short straight tube segment 213 is also provided between the outer sleeve bend segment 212 and the hose head 214. The short straight tube section 213 ensures that the delivery sheath 1 extends into the atrial appendage to complete the delivery procedure. In these embodiments, the first and second curved tube sections 2121, 2122 of the outer cannula curved tube section 212 are angled spatially with respect to each other with their central axes non-coplanar, so that the outer cannula curved tube section 212 is shaped to more closely conform to the physiological structure in the vicinity of the left atrial appendage to facilitate delivery of the occluder 4. The hose head 214 is arranged to avoid puncturing the left atrial appendage tissue 5 when the outer cannula 2 is in the left atrial appendage position.
As shown in fig. 13, in some alternative embodiments of the present application, the outer sleeve body 21 includes a first inner layer, a first intermediate layer, and a first outer layer, the first intermediate layer sequentially formed with a first developing zone A1, a first winding zone A2, and a first supporting zone A3 from a distal end of the outer sleeve 2 to a proximal end of the sleeve, the first developing zone A1 including a first developing ring 215 disposed around an outer circumference of the first inner layer, the first winding zone A2 including a first elastic coil wound around the outer circumference of the first inner layer, the first supporting zone A3 including a first mesh-like woven structure sleeved outside the first inner layer,
the outer straight tube section 211 is correspondingly positioned in the first supporting area A3, the outer curved tube section 212 is correspondingly positioned in the first winding area A2, and the hose head 214 is correspondingly positioned in the first developing area A1.
In these embodiments, the first support area A3 is provided to enhance pushability at the proximal end of the outer sleeve body 21, facilitating the pushing of the outer sleeve 2 into place by the practitioner without damaging the vessel. The arrangement of the first flexible region A2 enhances the flexibility and suppleness of the distal end of the outer sleeve body 21, and is easy to conform to the tissue structure or vascular structure near the left atrial appendage, avoiding damaging the human body. The first developing ring 215 provided in the first developing area A1 is provided around the outer periphery of the first inner layer and at the hose head 214, facilitating the development positioning.
The first inner layer and the first outer layer may be made of the following PTFE (Polytetrafluoroethylene) material, nylon, and other polymer materials.
As shown in fig. 14, in some alternative embodiments of the present application, the wall of the sheath tube 11 includes a second inner layer, a second intermediate layer, and a second outer layer, the second intermediate layer is sequentially formed with a second developing zone B1 and a second supporting zone B3 from the distal end of the delivery sheath 1 to the proximal end of the delivery sheath 1, the second developing zone B1 includes a second developing ring 14 disposed around the outer layer of the second inner layer, and the second supporting zone B3 includes a second mesh-like woven structure sleeved outside the second inner layer.
In some examples of these embodiments, after the delivery sheath 1 has been extended into the outer sheath tube 21 and the delivery sheath 1 and outer sheath tube 2 are in clamping connection with the locking joint 12 by the locking ring 223, the positions of the first and second developing rings 215, 14 coincide to indicate that the occluder 4 has reached the ready position.
As shown in fig. 15, in some embodiments of the present application, the second developing ring 14 is formed with at least one fracture 141 extending in the axial direction of the sheath body 11 itself in the circumferential direction. In these embodiments, the second inner layer is typically made of plastic and the second developer ring 14 is made of a metallic material, the toughness of the plastic being much greater than the toughness of the metal. Either pulling the occluder 4 into the sheath shaft 11 from the outside of the distal end of the sheath shaft 11 through the pusher 3 or feeding the occluder 4 out of the sheath shaft 11 through the pusher 3 requires passing the second developing ring 14, both the occluder 4 and the second developing ring 14 are pressed against each other, which is detrimental to the delivery of the occluder 4 and easily causes deformation damage to the second developing ring 14 and the occluder 4. After the break 141 is provided, when the sealer 4 passes the second developing ring 14, the second developing ring 14 expands radially and opens, weakening the pressing force between the second developing ring 14 and the sealer 4, while retaining the developing function of the second developing ring 14.
In some embodiments of the present application, a second winding region is further provided between the second developing region B1 and the second supporting region B3, the second winding region including a first elastic coil wound outside the second inner layer. In these embodiments, the second flexibility zone corresponds to the position of the first flexibility zone A2, and the second support zone B3 corresponds to the position of the first support zone A3, so that the pushing property and the supporting property of the proximal end of the occluder 4 delivery device are ensured, and the flexibility and the bending property of the distal end of the occluder 4 delivery device are also ensured, which is beneficial for high-quality implementation of the occlusion.
As shown in fig. 16, in some embodiments of the present application, the distal end of the sheath tube 11 is formed with a recovery portion 111, the recovery portion 111 being on a side of the second developing ring 14 facing away from the second mesh-like woven structure on the axis of the sheath tube 11 itself, the recovery portion 111 including an opening for the ingress and egress of the occluder 4.
In some embodiments of the present application, the recycling portion 111 includes a plurality of arcuate flaps 1111 circumferentially spaced along the sheath body 11, wherein top edges of the arcuate flaps 1111 enclose an opening perpendicular to the axial direction of the sheath body 11, and a notch 1112 is formed between two adjacent arcuate flaps 1111, the notch 1112 extending from the opening to the second developing ring 14 axially along the sheath body 11.
In these embodiments, as shown in fig. 17, the notch 1112 formed by the recovery portion 111 can avoid the occurrence of imaging or blood drawing failure caused by complete fitting of the distal end of the delivery sheath 1 to the left atrial appendage tissue 5 when imaging of the lesion site is required for discrimination or back blood evacuation is required after the distal end of the delivery sheath 1 is delivered to the left atrial appendage tissue 5.
As shown in fig. 18, in these embodiments, when the occluder 4 is recovered into the delivery sheath 1, the recovery portion 111 is in the expanded state, the plurality of arc-shaped flaps 1111 are expanded, the opening area of the recovery portion 111 is increased, the recovery resistance of the occluder 4 by the opening at the distal end of the delivery sheath 1 is reduced, and simultaneously, each arc-shaped flap 1111 of the recovery portion 111 has a wrapping effect on the occluder 4, the contact area of the recovery portion 111 and the occluder 4 is larger, the extrusion force in each direction of the occluder 4 is smaller, and the smooth recovery of the occluder 4 is ensured.
In these embodiments, the arcuate flaps 1111 of the recovery portion 111 are formed by lamination and lamination of a second outer layer and a second inner layer.
As shown in fig. 19, in some embodiments of the present application, the opening of the recovery portion 111 is disposed obliquely, the edge of the opening encloses a curved surface inclined toward the second developing ring 14, and the recovery portion 111 is formed with a bevel scoop 1113.
As shown in fig. 20, when the deployed occluder 4 is recovered, the occluder 4 is introduced from the distal end of the delivery sheath 1, because the opening of the recovery portion 111 is inclined, the contact area between the inclined-mouth scoop 1113 and the occluder 4 is increased by the recovery portion 111, and the inclined-mouth scoop 1113 applies a trapezoidal step force to the occluder 4, so that the inclined opening in the recovery portion 111 is inclined in the recovery process of the occluder 4, the resistance of the distal end opening of the delivery sheath 1 to the occluder 4 is reduced, the deformation of the occluder 4 is avoided, and the recovery efficiency is increased.
The inventors have further found that the degradable occluder 4 is increasingly used in clinic, and that the degradable occluder 4 is not developed in the human body, which makes it difficult to determine the actual delivery position of the occluder 4 during delivery, which has a great negative impact on the implementation of the occlusion procedure. And the occluder 4 has a plurality of models, so that a pusher 3 which can assist in judging the actual delivery positions of various occluders 4 needs to be designed.
In some alternative embodiments of the application, the occluder 4 delivery device further comprises a pusher 3, the pusher 3 comprising:
an operating handle 31 located at the proximal end of the delivery sheath 1;
the connector 32 is used for fixedly connecting with the plugging device 4;
the push rod 33 is arranged between the operating handle 31 and the connector 32, one end of the push rod 33 is connected with the operating handle 31, the other end of the push rod 33 is connected with the connector 32, a marking area M is arranged at the part of the push rod 33 close to the operating handle 31, the marking area M comprises a plurality of marking pieces 331, and each marking piece 331 can move back and forth in the marking area M in the axial direction of the push rod 33 so as to mark the positions of different parts of the plugging device 4.
In these embodiments, the operator holds the operating handle 31 during delivery of the occluding device 4 through the delivery sheath 1, and the connector 32 is fixedly connected to the occluding device 4, and in some examples the connector 32 is threadably connected to the occluding device 4.
As shown in fig. 21, in some examples, the occluder 4 comprises a plurality of differently shaped portions in the original state, including left disc anchor head 44, left disc 45, waist 46, right disc 47, and externally threaded anchor head 43 from left to right.
Before the occlusion procedure is performed, the step of loading the occluding device 4 into the delivery sheath 1 in vitro is required. In this step, referring to fig. 22 to 24 together, the pushing rod 33 of the pusher 3 extends into the sheath body 11 of the delivery sheath 1 through the hemostatic valve 13, and the connector 32 is caused to extend out of the sheath body 11 from the distal end of the delivery sheath 1. The plugging device 4 in the original state is in threaded connection with the connector 32 of the delivery sheath 1, then the pushing rod 33 is pulled from the distal end of the delivery sheath 1 to the proximal end of the delivery sheath 1 by holding the operating handle 31, and the plugging device 4 is changed from the original state to the unfolded state shown in fig. 23 in the process that the plugging device 4 enters the sheath tube 11 from the distal end of the delivery sheath 1. In fig. 23, L1 corresponds to the expanded portion of the left disk 45, L2 corresponds to the expanded portion of the waist 46, and L3 corresponds to the expanded portion of the right disk 47. As shown in fig. 24, in a specific example, when the waist 46 (i.e., at L2) is observed to be completely entered into the delivery sheath 1 during the extracorporeal loading, the prescribed marker 331 corresponding to the waist 46 is moved to a flush position with the end face 131 of the hemostatic valve and the marker 331 is held stationary, this marker 331 representing the starting position of the waist 46 at the time of subsequent intracorporal release of the occluder 4. The occluder 4 is completely loaded into the delivery sheath 1, the delivery sheath 1 loaded with the occluder 4 and the pusher 3 enter the outer sleeve 2 placed in the body of the subject, and when the first developing ring 215 and the second developing ring 14 are completely overlapped, the occluder 4 can be judged to have reached the preparation position. At this time, after the locking ring 223 in the screwing cap 221 is in butt joint with the locking joint 12, the locking ring 223 rotates relative to the locking joint 12, and the clamping head 2233 on the locking ring 223 is clamped into the locking groove 122 and moves along the locking groove 122 in the rotating process, and is clamped and fixed at the groove tail section b of the locking groove 122 after passing through the bayonet 1221, so as to complete the fixed connection of the delivery sheath 1 and the outer sleeve 2. The operating handle 31 is detachably connected with the pushing rod 33, and the operator can adjust the distance between the operating handle 31 and the hemostatic valve 13 according to the operation requirement and habit.
The operator holds the operating handle 31 and releases the occluder 4 from the proximal end of the pusher 3 to the distal end of the pusher 3, and during the release, when the above-mentioned marking element 331 marking the starting position of the waist 46 is again flush with the end face 131 of the hemostatic valve, it is marked that the left disc 45 of the occluder 4 has been completely released. Taking this as an example, the junctions of all the parts in the plugging device 4 can be marked by the marking piece 331, and the plugging device 4 can be efficiently and rapidly released and positioned under the condition of no development by arranging the movable marking piece 331 on the pushing rod 33, so that the complicated operation of repeatedly judging the position of the plugging device 4 by ultrasound is not needed, and the marking method is also suitable for plugging devices 4 with different types and different specifications, and meets the requirement of marking universality of various plugging devices 4.
In some alternative embodiments, the pushing rod 33 is a wire rope rod, the marker 331 is an elastic collar, or the marker 331 is a metal collar with an internal thread formed on the inner circumferential side. The marking piece 331 is an elastic ring collar, the position of the marking piece 331 on the marking area M can be adjusted by utilizing the deformable separation of the elastic ring collar from the steel cable, and the elastic restoring performance of the elastic ring collar can be utilized, so that the elastic ring collar is clamped at the set marking position. The marking piece 331 is a metal ring collar with internal threads formed on the inner circumference side, when the position of the metal ring collar on the marking area M needs to be adjusted, the metal ring collar is unscrewed, so that the metal ring collar moves back and forth relative to the shaft of the steel cable, and when the metal ring collar needs to be fixed on the marking position, the metal ring collar is screwed on the steel cable shaft.
In some alternative embodiments, the same marking features of each marking element 331 are different from each other to correspond to different portions of the marking occlusion device 4, and the marking features are selected from at least one of a peripheral contour shape, a surface marking number, and a color. In these embodiments, the identifiable marking characteristics of each marking element 331 are different, and may correspond to the interface between different portions of the occluding device 4. For example, in the marking area M, there are four marking pieces 331, each of the marking pieces 331 has an annular structure, the outline shape of the outer periphery of the first marking piece 331 is a triangle, and a circular hole is formed in the middle; the second marker 331 has a quadrilateral outer contour, and a circular hole is formed in the middle of the second marker; the third marker 331 has a pentagonal outer contour, and a circular hole is formed in the middle of the third marker; the fourth marker 331 has a circular outer peripheral shape, and a circular hole is formed in the middle thereof.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An occluder delivery device, comprising:
the conveying sheath comprises a sheath body and a locking joint, wherein the locking joint is fixedly arranged at the proximal end of the sheath body;
the outer sleeve is sleeved on the outer peripheral side of the sheath pipe body, the outer sleeve comprises an outer sleeve pipe body and a joint assembly, the joint assembly is used for connecting the outer sleeve pipe body with the conveying sheath, the joint assembly comprises a screwing cap, the screwing cap comprises a screwing compression ring and a locking ring, the screwing compression ring and the locking ring can rotate relatively and independently along the axial direction of the screwing cap and are fixedly connected with the axial direction of the screwing cap, the screwing compression ring is used for rotationally compressing a hemostatic pad of the joint assembly, and the locking ring is used for being clamped in the locking joint through rotation after being butted with the locking joint.
2. The occluder delivery device of claim 1, wherein,
the screwing compression ring and the locking ring are rotatably and annularly clamped through annular clamping grooves and annular buckles which are matched in size.
3. The occluder delivery device of claim 1, wherein a clip is formed on the inner periphery of the locking ring, the clip being located at an end facing away from the screw compression ring and protruding radially from the locking ring itself,
the locking joint comprises a sleeve body, a locking groove extending along the circumferential direction of the sleeve body is formed in the end part, close to the locking ring, of the sleeve body, the clamping head is matched with the locking groove in size, a bayonet is formed between the middle groove section and the tail groove section of the locking groove, so that when the locking ring rotates relative to the locking joint, the clamping head is clamped into the locking groove and moves along the locking groove, and is clamped and fixed at the tail groove section of the locking groove after passing through the bayonet.
4. The occluder delivery device of claim 1, wherein the threaded compression ring is internally formed with a compression post, a first internal thread and a barb,
the axial direction of the compression column is axially coincident with the screwing cap, the compression column is used for compressing the hemostatic pad, the first internal thread and the part, close to the locking ring, of the periphery of the compression column are oppositely arranged, and the barb is formed at a port, opposite to the locking ring, of the screwing compression ring.
5. The occluder delivery device of claim 4, wherein the connector assembly further comprises:
the compression ring is screwed on the inner side of the locking ring, the outer periphery of the compression ring is screwed on the inner side of the locking ring, the compression ring is screwed on the outer side of the compression ring, the compression ring is screwed on the inner side of the compression ring, the compression ring is screwed on the compression ring, and the compression ring is screwed on the compression ring;
the pipe pressure nut is in threaded connection with one end of the joint seat, which faces away from the screwing cap, one end of the outer sleeve pipe body is inserted into the conveying pipe cavity, and the outer sleeve pipe body is fixedly connected with the joint seat through the pipe pressure nut.
6. The occluder delivery device of claim 1, wherein the outer sleeve body comprises: one end of the straight tube section of the outer sleeve is connected with the joint component,
the outer sleeve bent pipe section is positioned at one end of the outer sleeve straight pipe section, which is opposite to the joint assembly, and is communicated with the outer sleeve straight pipe section, and a first bent pipe section and a second bent pipe section are sequentially arranged from the proximal end of the outer sleeve pipe body to the distal end of the outer sleeve pipe body, wherein the first central axis of the first bent pipe section and the second central axis of the second bent pipe section are different;
the hose head is positioned at one end of the outer sleeve bent pipe section far away from the outer sleeve straight pipe section.
7. The occluder delivery device of claim 6, wherein the outer sleeve comprises a first inner layer, a first intermediate layer and a first outer layer, the first intermediate layer sequentially forming a first development zone, a first winding zone and a first support zone from the distal end of the outer sleeve to the proximal end of the outer sleeve, the first development zone comprising a first development ring disposed around the outer periphery of the first inner layer, the first winding zone comprising a first elastic coil wrapped around the outer periphery of the first inner layer, the first support zone comprising a first mesh braid structure sleeved over the outer periphery of the first inner layer,
the outer sleeve straight pipe section is correspondingly positioned in the first supporting area, the outer sleeve bent pipe section is correspondingly positioned in the first winding area, and the hose head is correspondingly positioned in the first developing area.
8. The occluder delivery device of claim 1, wherein the sheath has a length greater than the outer sleeve, and wherein the distal end of the sheath extends beyond the distal end of the outer sleeve after the delivery sheath is fixedly connected to the outer sleeve.
9. The occluder delivery device of claim 1, wherein the tube wall of the sheath tube comprises a second inner layer, a second intermediate layer and a second outer layer, the second intermediate layer sequentially forming a second development zone and a second support zone from the distal end of the delivery sheath to the proximal end of the delivery sheath, the second development zone comprising a second development ring disposed around the outer layer of the second inner layer, the second support zone comprising a second mesh braid structure sleeved over the outer layer of the second inner layer;
preferably, at least one fracture extending along the axial direction of the sheath body is formed on the second developing ring in the circumferential direction;
preferably, a second winding area is further arranged between the second developing area and the second supporting area, and the second winding area comprises a first elastic coil wound outside the second inner layer;
preferably, a recovery part is formed at the distal end of the sheath body, the recovery part is positioned at one side of the second developing ring, which is opposite to the second mesh-like woven structure, on the axis of the sheath body, and the recovery part comprises an opening for the entrance and exit of the occluder;
preferably, the recovery part comprises a plurality of arc-shaped flaps arranged at intervals along the circumferential direction of the sheath body, the top edges of the arc-shaped flaps are enclosed to form the opening perpendicular to the axial direction of the sheath body, a notch is formed between two adjacent arc-shaped flaps, and the notch extends from the opening to the second developing ring along the axial direction of the sheath body;
preferably, the opening is obliquely arranged, the edge of the opening surrounds a curved surface inclined towards the second developing ring, and the recycling part is provided with a bevel scoop.
10. The occluder delivery device of claim 1, further comprising a pusher, the pusher comprising:
an operating handle located at the proximal end of the delivery sheath;
the connector is used for being fixedly connected with the plugging device;
the pushing rod is arranged between the operating handle and the connector, one end of the pushing rod is connected with the operating handle, the other end of the pushing rod is connected with the connector, a marking area is arranged at the part, close to the operating handle, of the pushing rod, the marking area comprises a plurality of marking pieces, and each marking piece can move back and forth in the marking area in the axial direction of the pushing rod so as to mark the positions of different parts of the plugging device;
preferably, the pushing rod is a steel cable rod,
the marker is an elastic ring collar or a metal ring collar with internal threads formed on the inner circumference side;
preferably, the same kind of marking features of each of the markers are different from each other to correspondingly mark different parts of the occluder, and the marking features are at least one selected from the group consisting of a peripheral contour shape, a surface marking number and a color.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310775437.1A CN116807531A (en) | 2023-06-28 | 2023-06-28 | Plugging device conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310775437.1A CN116807531A (en) | 2023-06-28 | 2023-06-28 | Plugging device conveying device |
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| CN116807531A true CN116807531A (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310775437.1A Pending CN116807531A (en) | 2023-06-28 | 2023-06-28 | Plugging device conveying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781076A (en) * | 2024-02-28 | 2024-03-29 | 苏州誉高紧固系统有限公司 | Detachable self-locking pore canal plugging device, pore canal plugging set and plugging and disassembling method |
-
2023
- 2023-06-28 CN CN202310775437.1A patent/CN116807531A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781076A (en) * | 2024-02-28 | 2024-03-29 | 苏州誉高紧固系统有限公司 | Detachable self-locking pore canal plugging device, pore canal plugging set and plugging and disassembling method |
| CN117781076B (en) * | 2024-02-28 | 2024-05-24 | 苏州誉高紧固系统有限公司 | Detachable self-locking pore canal plugging device, pore canal plugging set and plugging and disassembling method |
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