CN116807701A - Tectorial membrane support carries and release system - Google Patents
Tectorial membrane support carries and release system Download PDFInfo
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- CN116807701A CN116807701A CN202310689762.6A CN202310689762A CN116807701A CN 116807701 A CN116807701 A CN 116807701A CN 202310689762 A CN202310689762 A CN 202310689762A CN 116807701 A CN116807701 A CN 116807701A
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- Prior art keywords
- conveying
- sheath
- sheath pipe
- upper cover
- carrier
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- 210000002489 tectorial membrane Anatomy 0.000 title claims description 8
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 11
- 210000003128 head Anatomy 0.000 claims description 10
- 230000002792 vascular Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 210000004204 blood vessel Anatomy 0.000 abstract description 48
- 239000002473 artificial blood Substances 0.000 abstract description 26
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000033990 Stent malfunction Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 231100000216 vascular lesion Toxicity 0.000 description 1
- 238000007631 vascular surgery Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/9517—Instruments specially adapted for placement or removal of stents or stent-grafts handle assemblies therefor
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Prostheses (AREA)
Abstract
The invention relates to the technical field of medical appliances, in particular to a film covered stent conveying and releasing system. The invention relates to a film covered stent conveying and releasing system, which comprises a conveying carrier, a conveying sheath pipe and a sheath pipe pulling structure, wherein a cavity for accommodating an artificial blood vessel is formed in the upper part of the conveying carrier, a ring sleeve seat communicated with the cavity is formed in the front end of the conveying carrier, one end of the conveying sheath pipe is inserted into the ring sleeve seat, at least two cutters contacted with one end of the conveying sheath pipe are arranged at intervals along the circumferential direction of the end of the ring sleeve seat, a film covered stent compressing device is arranged in the conveying sheath pipe, the sheath pipe pulling structure is arranged on the conveying carrier and connected with one end of the conveying sheath pipe, and the sheath pipe pulling structure is used for driving the conveying sheath pipe to pull backwards to release the film covered stent, and in the process, the cutters slit the conveying sheath pipe along the length direction. The advantages are that: the structure design is reasonable, and the covered stent with the branch artificial blood vessel and the covered stent without the branch artificial blood vessel can be effectively and rapidly conveyed and released.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a film covered stent conveying and releasing system.
Background
For patients with severe aortic vascular lesions or injuries, surgical open chest surgery is generally required clinically, and artificial blood vessels and covered stents are used to replace blood vessels with lesions or injuries. The invention patent number CN201610639554 describes an artificial blood vessel which can be used for rapidly connecting the artificial blood vessel with a human blood vessel, so that the operation time is greatly shortened. In the existing vascular surgery and interventional surgery, when a vascular stent is delivered in place and then released, a pull type release mode is mostly adopted, and the mode can only be used for releasing a covered stent without an artificial blood vessel or a covered stent without a branched artificial blood vessel, and cannot be used for releasing a covered stent with a branched artificial blood vessel as described in patent CN 201610639554.
Another prior art method for ligating and releasing a stent graft (e.g. patent CN 200510028616) can release a stent graft with a branched vascular prosthesis and a stent graft without a branched vascular prosthesis, but has a plurality of disadvantages: 1) The film-covered bracket is bound by the binding wire, so that the assembly is inconvenient; 2) When the covered stent is conveyed, the covered outside of the covered stent is directly contacted with the blood vessel of the human body, the covered surface is rough, the friction force between the covered stent and the blood vessel of the human body is large during conveying, and the blood vessel is easy to be damaged; 3) After the stent is released, the binding wire is clamped between the released covered stent and the human blood vessel, and the human blood vessel is easily damaged when the binding wire is taken out.
In order to solve the problems of the prior stent graft delivery system, the applicant designs and develops a novel stent graft delivery and release system.
Disclosure of Invention
The invention aims to solve the technical problem of providing a film covered stent conveying and releasing system, which effectively overcomes the defects of the prior art.
The technical scheme for solving the technical problems is as follows:
the utility model provides a tectorial membrane support carries and release system, including carrying carrier, carry sheath pipe and sheath pipe pulling structure, above-mentioned carrier upper portion is equipped with the cavity that is used for holding the vascular prosthesis, the front end of above-mentioned carrier is equipped with the ring cover seat of above-mentioned cavity intercommunication, the one end plug bush of above-mentioned transport sheath pipe is in above-mentioned ring cover seat, above-mentioned ring cover seat tip is equipped with two at least cutters that contact with above-mentioned transport sheath pipe one end along its hoop interval, above-mentioned tectorial membrane support compression device is in above-mentioned transport sheath pipe, above-mentioned sheath pipe pulling structure is adorned on above-mentioned carrier, and be connected with the one end of above-mentioned transport sheath pipe, above-mentioned sheath pipe pulling structure is used for driving the pulling of above-mentioned transport sheath pipe backward in order to release above-mentioned tectorial membrane support, and in this process, above-mentioned cutter is divided above-mentioned transport sheath pipe along length direction.
On the basis of the technical scheme, the invention can be improved as follows.
Further, a connecting shaft is provided in the delivery sheath, the connecting shaft extends through the front and rear ends of the delivery sheath, the front end of the connecting shaft is connected with a guide cone head with smooth surface, the guide cone head is provided at the front end of the delivery sheath, and the rear end of the connecting shaft is connected with the delivery carrier.
Further, the conveying carrier is a gun-shaped handle, a trigger capable of being pressed towards the rear end of the conveying carrier is arranged at the lower part of the conveying carrier, the upper end of the trigger stretches into the cavity of the conveying carrier, the sheath pulling structure is connected and matched with the upper end of the trigger, and the trigger is used for being pressed backwards under the action of external force and driving the sheath pulling structure to move backwards.
Further, the sheath pulling structure includes a release pull ring, two sides of a front end of the release pull ring are respectively provided with a sheath connecting piece, the sheath connecting pieces on two sides extend forward to be connected with two sides of a rear end of the covered stent, the release pull ring is hung with a rear end of an upper end of the trigger, and the release pull ring can move backwards along with the trigger and can be pulled backwards relative to the trigger.
Further, the ring sleeve seat comprises a semicircular lower seat and a semicircular upper cover, the lower seat is fixedly connected with the front end of the conveying carrier, one end of the upper cover is hinged with one end of the upper portion of the lower seat through a pin shaft, a rebound part connected with the lower seat is arranged on the pin shaft, the conveying carrier is provided with a binding piece, the upper cover can be turned down to form a closed ring with the lower seat and is fixed through the binding piece, the rebound part is compressed, or the binding piece releases the upper cover, the rebound part drives the upper cover to be turned upwards to be opened, and the front ends of the lower seat and the upper cover are respectively provided with at least one cutter.
Further, the resilient member is a torsion spring, which is sleeved on the pin shaft, and two ends of the resilient member are respectively connected with the lower seat and the upper cover.
Further, the cutter is a blade and extends in the radial direction of the annular seat, and a blade is arranged at the front end of the cutter.
Further, the binding member includes a handle tab and a pull shaft, the handle tab is assembled at a rear end of the cavity of the transport carrier, the pull shaft is extended back and forth and is installed in the cavity, a rear end of the pull shaft is connected with the handle tab, a binding wire is connected to an outer surface of the other end of the upper cover, a through hole for accommodating the pull shaft is provided at a lower portion of the lower seat in a front-rear direction, a threading hole penetrating the through hole is provided at a lower portion of the lower seat, the other end of the pull shaft is penetrated into the through hole, the binding wire is used to bypass an outer portion of the other end of the upper cover and an outer portion of the other end of the lower seat after the upper cover and the lower seat are closed, and penetrates through the threading hole and surrounds the other end of the pull shaft and forms a rope loop so as to restrict the upper cover and the lower seat to be closed, and the handle tab is used to be pulled back under an external force and drive the pull shaft to move back to the other end to be separated from the rope loop of the other end of the binding wire so that the binding wire releases the restriction of the upper cover from turning upward.
The beneficial effects of the invention are as follows: the structure design is reasonable, the covered stent with the branch artificial blood vessel and the covered stent without the branch artificial blood vessel can be effectively and rapidly conveyed and released, and before the covered stent is released, the covered stent is arranged in the sheath tube and is not contacted with the blood vessel, the surface of the sheath tube contacted with the blood vessel is smooth, the friction coefficient is small, and the damage to the blood vessel can not be caused.
Drawings
FIG. 1 is a schematic view of the structure of a stent graft delivery and release system of the present invention after being installed into the stent graft;
FIG. 2 is a front elevational view of the stent graft delivery and delivery system of the present invention after installation into the stent graft;
FIG. 3 is a cross-sectional view of a longitudinal section of a stent graft delivery and release system of the present invention without a stent graft;
FIG. 4 is a front view of the structure of the stent graft delivery and delivery system of the present invention without the stent graft and sheath;
FIG. 5 is a cross-sectional view of the structure of the D-D plane in FIG. 4;
FIG. 6 is a cross-sectional structural view of a stent graft delivery and delivery system of the present invention in cross-section without a stent graft and sheath;
FIG. 7 is an enlarged view of the portion A of FIG. 6;
fig. 8 is a schematic view of the structure of the stent graft delivery and release system of the present invention after the stent graft and sheath are not assembled and the upper cover is opened.
In the drawings, the list of components represented by the various numbers is as follows:
1. conveying the carrier; 2. a delivery sheath; 4. a ring sleeve seat; 5. a guide cone head; 6. a tie-down; 7. a cutter; 21. a connecting shaft; 31. releasing the pull ring; 32. a sheath tube connecting sheet; 41. a lower seat; 42. an upper cover; 43. a rebound member; 61. a handle pull ring; 62. pulling a shaft; 421. binding wires.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Examples: as shown in fig. 1 to 8, the stent graft delivery and release system of this embodiment comprises a delivery carrier 1, a delivery sheath 2 and a sheath pulling structure, wherein a cavity for accommodating an artificial blood vessel is provided at the upper portion of the delivery carrier 1, a collar seat 4 communicating with the cavity is provided at the front end of the delivery carrier 1, one end of the delivery sheath 2 is inserted into the collar seat 4, at least two cutters 7 contacting with one end of the delivery sheath 2 are provided at the end of the collar seat 4 at intervals along the circumferential direction thereof, the stent graft compression device is provided in the delivery sheath 2, the sheath pulling structure is mounted on the delivery carrier 1 and connected with one end of the delivery sheath 2, and the sheath pulling structure is used for driving the delivery sheath 2 to pull back to release the stent graft, and in the process, the cutters 7 slit the delivery sheath 2 along the length direction.
The stent graft delivery and release system of this embodiment is suitable for a stent graft with a blood vessel prosthesis and a stent graft without a blood vessel prosthesis (denoted by b in the figure), specifically, before use, the stent graft is compressed and loaded into the delivery sheath 2 in advance, one end of the delivery sheath 2 is inserted into the annular socket 4, and one end surface of the delivery sheath 2 is brought into contact with the cutter 7, when the stent graft with a blood vessel is loaded, the stent graft is partially compressed and loaded into the delivery sheath 2, the blood vessel prosthesis is partially exposed from one end of the delivery sheath 2 and placed into the cavity of the delivery carrier 1, and the specific delivery and release process is as follows:
when the covered stent is released in the human blood vessel after the other end of the delivery sheath 2 is delivered in place, the delivery sheath pulling structure is operated to pull the delivery sheath 2 to move towards the rear end of the delivery carrier 1, the front end of the delivery sheath 2 gradually releases the covered stent, the delivery sheath 2 is scratched by the cutter 7 in the pulling process, the delivery sheath 2 is gradually divided into at least two parts (when the covered stent with the artificial blood vessel is released, the divided delivery sheath 2 can effectively avoid the obstruction of the branch of the artificial blood vessel and the like), and after the complete release, the whole device is pulled away. Because the covered stent is conveyed and released in the conveying sheath tube 2 along with the movement of the covered stent before the release, the covered stent is in the sheath tube and is not contacted with the blood vessel, the surface of the sheath tube contacted with the blood vessel is smooth, the friction coefficient is small, and the damage to the blood vessel can not be caused. Therefore, the whole structure is reasonable in design, and the covered stent with the branch artificial blood vessel and the covered stent without the branch artificial blood vessel can be effectively and rapidly conveyed and released.
In a preferred embodiment, the delivery sheath 2 is provided with a coupling shaft 21, the coupling shaft 21 extends longitudinally through the front and rear ends of the delivery sheath 2, the front end of the coupling shaft 21 is connected with a smoothly surfaced guide cone 5, the guide cone 5 is provided at the front end of the delivery sheath 2, and the rear end of the coupling shaft 21 is connected with the delivery carrier 1.
In the above embodiment, the purpose of the connecting shaft 21 is mainly to connect the guiding cone head 5, after the delivery sheath 2 is installed, the guiding cone head 5 is just located at the front end of the delivery sheath 2, when delivering into a blood vessel, the guiding cone head 5 plays a guiding role, so that the blood vessel is easy to enter, meanwhile, the guiding cone head 5 can avoid the front end edge of the delivery sheath 2 touching the blood vessel in the delivery process, and the blood vessel is protected from being scratched by the front end of the delivery sheath 2.
In a preferred embodiment, the delivery carrier 1 is a gun-shaped handle, a trigger (denoted by a in the figure) capable of being pressed towards the rear end is arranged at the lower part of the delivery carrier, the upper end of the trigger extends into the cavity of the delivery carrier 1, the sheath pulling structure is connected and matched with the upper end of the trigger, and the trigger is used for being pressed backwards under the action of external force and driving the sheath pulling structure to move backwards.
In the above embodiment, the delivery carrier 1 adopts a gun-shaped handle member commonly used in medical apparatuses and instruments, the handling is convenient, the trigger adopts a structure pressed backwards (which belongs to the conventional structure of the existing gun-shaped handle and is not described in detail herein), the rear end of the delivery carrier 1 is provided with a sheath pulling structure, the sheath pulling structure is driven to move backwards by the pressing of the trigger, so that the delivery sheath 2 is driven to move backwards relative to the internal covered stent, the covered stent is gradually released at the front end of the delivery sheath 2, and in the process of pulling the delivery sheath 2 backwards, the delivery sheath 2 moves backwards relative to the cutter 7, so that the delivery sheath 2 is divided into several halves, especially in the process of releasing the covered stent with an artificial blood vessel, the delivery sheath 2 is divided into several halves at the front end of the artificial blood vessel, and the branch of the artificial blood vessel can be effectively avoided.
As a preferred embodiment, the sheath pulling structure includes a release tab 31, two sides of a front end of the release tab 31 are respectively provided with a sheath connecting piece 32, the sheath connecting pieces 32 on two sides extend forward to be connected with two sides of a rear end of the stent graft, the release tab 31 is hooked with a rear end of an upper end of the trigger, and the release tab 31 is movable backward with the trigger and is pulled backward with respect to the trigger.
In the above embodiment, under normal conditions, the sheath pulling structure is limited at the rear end of the upper end of the trigger, the delivery sheath 2 is in the releasing stage, the trigger is pressed to move backward, the trigger drives the release tab 31 to move backward, thereby driving the delivery sheath 2 to move backward through the sheath connecting pieces 32 on both sides, and further gradually releasing the covered stent from the front end of the delivery sheath 2.
In the above embodiment, a notch may be provided at the front end of the release tab 31 for receiving the upper end of the trigger to form a catch for both. The cavity of the carrier 1 is penetrated at the rear end thereof, the upper portion of the trigger is positioned at the penetration, and the rear end portion of the release tab 31 is positioned at the rear of the cavity (i.e., the outside of the gun-shaped handle), facilitating the operation.
What needs to be stated is: the sheath connecting piece 32 may be an integrally formed part with the delivery sheath 2, and may be connected to the release tab 31.
As a preferred embodiment, the ring holder 4 includes a semicircular lower holder 41 and a semicircular upper cover 42, the lower holder 41 is fixedly connected to the front end of the conveying carrier 1, one end of the upper cover 42 is hinged to one end of the upper portion of the lower holder 41 through a pin shaft, a resilient member 43 connected to the lower holder 41 is mounted on the pin shaft, a tie-down member 6 is mounted on the conveying carrier 1, the upper cover 42 can be turned down to form a closed ring with the lower holder 41, and is fixed by the tie-down member 6, the resilient member 43 is compressed, or the tie-down member 6 releases the upper cover 42, the resilient member 43 drives the upper cover 42 to be turned up and opened, and at least one cutter 7 is respectively disposed at the front ends of the lower holder 41 and the upper cover 42.
In the above embodiment, the loop seat 4 is designed to be in an openable or closable structure, which is beneficial to release of the covered stent with the artificial blood vessel, after the covered stent is released, the whole device is operated to move backwards, and then the artificial blood vessel can move forwards relative to the loop seat 4 until the artificial blood vessel is separated from the connecting shaft 21 and the guide cone head 5, and the upper cover 42 is opened, so that the artificial blood vessel cannot be restrained, the whole device can be separated from the covered stent and the artificial blood vessel quickly, the design is quite reasonable, and the covered stent is released more conveniently.
In this embodiment, as shown in fig. 5 and 7, the resilient member 43 is a conventional torsion spring, which is sleeved on the pin shaft, and two ends of the resilient member are connected to the lower seat 41 and the upper cover 42, respectively.
In this embodiment, the cutter 7 is a blade and extends along the radial direction of the annular seat 4, the front end of the cutter 7 is provided with a blade, and in the release process of the stent graft, the delivery sheath 2 moves backward relative to the cutter 7, so that the front end of the blade separates the delivery sheath 2 along the length direction, the design is reasonable, the operation is simple, and the release process can be performed synchronously without additional operation.
As a preferred embodiment, as shown in fig. 3 to 8, the tie 6 includes a handle tab 61 and a pull shaft 62, the handle tab 61 is assembled at a rear end of a cavity of the carrier 1, the pull shaft 62 is extended back and forth and is installed in the cavity, a rear end of the pull shaft 62 is connected to the handle tab 61, a binding wire 421 is connected to an outer surface of the other end of the upper cover 42, a through hole for receiving the pull shaft 62 is provided at a lower portion of the lower cover 41 in a front-rear direction, a threading hole penetrating the through hole is provided at a lower portion of the lower cover 41, the other end of the pull shaft 62 is threaded into the through hole, the binding wire 421 is used to pass through the outside of the other end of the upper cover 42 and the outside of the other end of the lower cover 41 after the upper cover 42 and the lower cover 41 are closed, and passes through the threading hole and surrounds the other end of the pull shaft 62 and forms a string loop to restrict the upper cover 42 and the lower cover 41 to be closed, the handle 61 is used to pull the lower cover and pull the upper cover 62 to move the string 421 to the other end of the upper cover 42 to be opened by pulling the string to the other end of the upper cover 42.
In the above embodiment, after the stent graft is released and the delivery sheath 2 is successfully separated into several halves, the pull ring 61 of the operating handle pulls the pull shaft 62 to move backward, the front end of the pull shaft 62 moves backward relative to the loop at the other end of the binding wire 421 until the pull shaft 62 is separated from the other end of the binding wire 421, at this time, the other end of the binding wire 421 is no longer restrained by the restriction of the pull shaft 62, that is, the upper cover 42 is not applied with upward restraining force, and under the deformation recovery action of the rebound member 43, the upper cover 42 is driven to pop up and open, so that the artificial blood vessel connected with the stent graft can be effectively avoided, the device can be normally withdrawn to be well separated from the stent graft and the artificial blood vessel, and the restraining member 6 has simple structural design and very convenient and quick operation.
Of course, one end of the binding-wire 421 may be connected to a pin shaft connecting the upper cover 42 and the lower seat 41, and the binding-wire 421 bypasses the outer surface of the upper cover 42 and bypasses the outer surface of one side of the lower seat 41 when being closed.
In this embodiment, the shape of the handle tab 61 is not limited, and the handle tab 61 may be of a structure that is convenient to operate, and generally, the rear end of the cavity of the carrier 1 is penetrated, and the handle tab 61 is disposed at the penetration.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (8)
1. A stent graft delivery and release system, characterized by: including carrying carrier (1), carrying sheath pipe (2) and sheath pipe pulling structure, carry carrier (1) upper portion to be equipped with and be used for holding the cavity of vascular prosthesis, carry carrier (1) the front end be equipped with the ring cover seat (4) of cavity intercommunication, the one end plug bush of carrying sheath pipe (2) is in ring cover seat (4), ring cover seat (4) tip along its hoop interval be equipped with at least two with cutter (7) of carrying sheath pipe (2) one end contact, tectorial membrane support compression device is in carrying sheath pipe (2), sheath pipe pulling structure dress in carry carrier (1) is connected with one end of carrying sheath pipe (2), sheath pipe pulling structure is used for driving carry sheath pipe (2) backward pulling in order to release tectorial membrane support, and in this process, cutter (7) are followed length direction and are drawn out carrying sheath pipe (2).
2. A stent graft delivery and delivery system according to claim 1, wherein: the novel conveying sheath tube is characterized in that a connecting shaft (21) is arranged in the conveying sheath tube (2), the connecting shaft (21) extends front and back to penetrate through the front end and the back end of the conveying sheath tube (2), the front end of the connecting shaft (21) is connected with a guide cone head (5) with smooth surface, the guide cone head (5) is arranged at the front end of the conveying sheath tube (2), and the rear end of the connecting shaft (21) is connected with the conveying carrier (1).
3. A stent graft delivery and release system according to claim 2, wherein: the conveying carrier (1) is a gun-shaped handle, a trigger capable of being pressed towards the rear end of the conveying carrier is arranged at the lower portion of the conveying carrier (1), the upper end of the trigger stretches into the cavity of the conveying carrier (1), the sheath pulling structure is connected and matched with the upper end of the trigger, and the trigger is used for being pressed backwards under the action of external force and driving the sheath pulling structure to move backwards.
4. A stent graft delivery and release system as in claim 3, wherein: the sheath pulling structure comprises a release pull ring (31), sheath connecting pieces (32) are respectively arranged on two sides of the front end of the release pull ring (31), the sheath connecting pieces (32) on two sides extend forwards to be connected with two sides of the rear end of the tectorial membrane bracket, the release pull ring (31) is connected with the rear end of the upper end of the trigger in a hanging mode, and the release pull ring (31) can move backwards along with the trigger and can be pulled backwards relative to the trigger.
5. A stent graft delivery and delivery system according to any one of claims 1 to 4, wherein: the ring sleeve seat (4) comprises a semicircular lower seat (41) and a semicircular upper cover (42), the lower seat (41) is fixedly connected with the front end of the conveying carrier (1), one end of the upper cover (42) is hinged with one end of the upper portion of the lower seat (41) through a pin shaft, a rebound part (43) connected with the lower seat (41) is arranged on the pin shaft, a binding piece (6) is arranged on the conveying carrier (1), the upper cover (42) can be turned down to form a closed circular ring with the lower seat (41) and is fixed through the binding piece (6), the rebound part (43) is compressed, or the binding piece (6) releases the upper cover (42), the rebound part (43) drives the upper cover (42) to be turned up and opened, and at least one cutter (7) is arranged at the front ends of the lower seat (41) and the upper cover (42) respectively.
6. The stent graft delivery and delivery system of claim 5, wherein: the rebound part (43) is a torsion spring and is sleeved on the pin shaft, and two ends of the rebound part are respectively connected with the lower seat (41) and the upper cover (42).
7. The stent graft delivery and delivery system of claim 5, wherein: the cutter (7) is a blade and extends along the radial direction of the annular sleeve seat (4), and a cutting edge is arranged at the front end of the cutter (7).
8. The stent graft delivery and delivery system of claim 5, wherein: the binding piece (6) comprises a handle pull ring (61) and a pull shaft (62), the handle pull ring (61) is assembled at the rear end of a cavity of the conveying carrier (1), the pull shaft (62) extends back and forth and is arranged in the cavity, the rear end of the pull shaft (62) is connected with the handle pull ring (61), a binding wire (421) is connected to the outer surface of the other end of the upper cover (42), a through hole for accommodating the pull shaft (62) is formed in the lower portion of the lower seat (41) along the front-back direction, a threading hole penetrating through the through hole is formed in the lower portion of the lower seat (41), the other end of the pull shaft (62) penetrates into the through hole, and the binding wire (421) is used for bypassing the outer portion of the other end of the upper cover (42) and the outer portion of the other end of the lower seat (41) after the lower seat (41) is closed, and is threaded through the threading hole and surrounds the other end of the pull shaft (62) to form a binding loop, so that the binding wire (421) is pulled up and down to the other end of the upper cover (42) to be separated from the binding loop (41) after the other end of the upper cover (41) is pulled up, and the binding loop (42) is pulled down to be opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310689762.6A CN116807701A (en) | 2023-06-12 | 2023-06-12 | Tectorial membrane support carries and release system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310689762.6A CN116807701A (en) | 2023-06-12 | 2023-06-12 | Tectorial membrane support carries and release system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116807701A true CN116807701A (en) | 2023-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310689762.6A Pending CN116807701A (en) | 2023-06-12 | 2023-06-12 | Tectorial membrane support carries and release system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116807701A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117426917A (en) * | 2023-12-20 | 2024-01-23 | 北京华脉泰科医疗器械股份有限公司 | Tectorial membrane support conveyor |
-
2023
- 2023-06-12 CN CN202310689762.6A patent/CN116807701A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117426917A (en) * | 2023-12-20 | 2024-01-23 | 北京华脉泰科医疗器械股份有限公司 | Tectorial membrane support conveyor |
| CN117426917B (en) * | 2023-12-20 | 2024-04-09 | 北京华脉泰科医疗器械股份有限公司 | Tectorial membrane support conveyor |
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Effective date of registration: 20240104 Address after: Room A07, 3rd Floor, Building 13, Block B, No. 818 Gaoxin Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 (Wuhan Free Trade Zone) Applicant after: Wuhan Lingke Medical Management Partnership Enterprise (L.P.) Address before: 430000 No. 1, floor 3, building 13, zone B, No. 818, Gaoxin Avenue, Donghu New Technology Development Zone, Wuhan, Hubei Province Applicant before: WUHAN MAIDI LINGKE MEDICAL TECHNOLOGY Co.,Ltd. |