CN117100473A - Delivery system for luminal surgery and method of operating the same - Google Patents
Delivery system for luminal surgery and method of operating the same Download PDFInfo
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- CN117100473A CN117100473A CN202311256759.1A CN202311256759A CN117100473A CN 117100473 A CN117100473 A CN 117100473A CN 202311256759 A CN202311256759 A CN 202311256759A CN 117100473 A CN117100473 A CN 117100473A
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- inner tube
- catheter
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000001356 surgical procedure Methods 0.000 title description 4
- 210000003928 nasal cavity Anatomy 0.000 claims abstract description 26
- 238000003780 insertion Methods 0.000 claims description 23
- 230000037431 insertion Effects 0.000 claims description 23
- 238000004891 communication Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 230000008602 contraction Effects 0.000 claims 1
- 238000002513 implantation Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 10
- 206010028980 Neoplasm Diseases 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 210000001154 skull base Anatomy 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 210000003695 paranasal sinus Anatomy 0.000 description 3
- 238000002271 resection Methods 0.000 description 3
- 230000001815 facial effect Effects 0.000 description 2
- 210000005036 nerve Anatomy 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 208000003174 Brain Neoplasms Diseases 0.000 description 1
- 208000007913 Pituitary Neoplasms Diseases 0.000 description 1
- 208000036071 Rhinorrhea Diseases 0.000 description 1
- 206010039101 Rhinorrhoea Diseases 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 210000001175 cerebrospinal fluid Anatomy 0.000 description 1
- 230000001055 chewing effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000002674 endoscopic surgery Methods 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002850 nasal mucosa Anatomy 0.000 description 1
- 210000001989 nasopharynx Anatomy 0.000 description 1
- 210000000944 nerve tissue Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 208000010916 pituitary tumor Diseases 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011127 radiochemotherapy Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 210000003718 sphenoid sinus Anatomy 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/9522—Means for mounting a stent or stent-graft onto or into a placement instrument
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)
- Endoscopes (AREA)
Abstract
The application relates to a conveying system for a cavity operation and an operation method thereof, wherein the conveying system for the cavity operation comprises a bracket and an imbedding device, the bracket comprises a contracted state and an expanded state, and the bracket comprises a first end and a second end which are oppositely arranged; the implantation device is used for extending into the nasal cavity so as to convey the bracket to a preset position, the implantation device comprises a guide pipe, a first fixing component and a second fixing component, the first fixing component and the second fixing component are arranged on the guide pipe along the axial interval of the guide pipe, the bracket is sleeved on the guide pipe, and the first fixing component and the second fixing component are respectively connected with the first end and the second end in a separable way. The operation difficulty of fixing or separating the two ends of the bracket through the first fixing component and the second fixing component is small, so that the operation of doctors is facilitated, and the operation efficiency is improved.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a conveying system for cavity operation and an operation method thereof.
Background
With rapid development of medical imaging technology and continuous application and practice of endoscopic technology in nasal and cranial region surgery, doctors, specialists in the fields of rhinology, neurosurgery and the like have very mature technology for treating diseases of nasal and cranial regions through the nasal endoscopic surgery. From the rhinorrhea of cerebrospinal fluid to complex cranio-basal region combined tumors, professional academic fields with the treatment center of 'nasal cranio-basal region' have been gradually developed through multi-disciplinary cooperation of nasal department, neurosurgery, imaging department and brain tumor chemoradiotherapy department.
The surgical treatment of the anterior skull base of the nasal endoscopic nasal cavity and nasal sinuses comprises: the nasal sinus and nasopharynx benign and malignant tumor is resected, and the skull base is repaired and reconstructed by the operations of optical nerve decompression of the sphenoid sinus, dacryocystigma anastomosis of the nasal cavity, combined path nasal craniofraorbital tumor resection and repair, nasal endoscopic pituitary tumor resection, orbital tip and saddle area tumor resection, cerebrospinal rhinoleak repair and the like. For doctors, the most ideal operation access of the skull base is the operation access which can clearly identify important nerve tissues on the premise of ensuring the excision of tumors or repair of structures and can enlarge the excision range if necessary. The access should be capable of retaining nerve and chewing function, reducing facial scar, avoiding facial deformity, and providing conditions for reconstruction and repair, while the transnasal endoscopic access can substantially meet the above requirements.
In the prior art, the bracket is placed in a cavity gap formed by the natural nasal sinuses, and the nasal endoscope can directly reach each structure of the skull base through a channel in the bracket for operation.
In the using process of the bracket, the bracket is required to be sent into the nasal cavity through the conveyor or the imbedding device, however, the operation difficulty of the conventional conveyor or imbedding device is high, the operation is inconvenient for doctors, and the operation efficiency is reduced.
Disclosure of Invention
Accordingly, it is necessary to provide a system for delivering a luminal procedure and a method of operating the same, which solve the problems of the prior art that the operation of the delivery device or the injector for delivering a catheter is difficult, and the use thereof by a doctor is inconvenient, resulting in a decrease in the efficiency of the procedure.
The first aspect of the present application provides a delivery system for a luminal procedure comprising a stent comprising a first end and a second end disposed opposite one another, the stent having a contracted state and an expanded state; the imbedding device comprises a catheter, a first fixing component and a second fixing component, wherein the first fixing component and the second fixing component are arranged on the catheter along the axial direction of the catheter at intervals, the stent is sleeved on the periphery of the catheter, the first fixing component and the second fixing component are respectively connected with the first end and the second end in a separable way, the first fixing component and the second fixing component can enable the stent to be switched between a contracted state and an expanded state, and the stent in the contracted state can be fixed on the catheter.
In one embodiment, the catheter comprises an inner tube and an outer tube sleeved on the periphery of the inner tube, the first fixing component is fixedly connected with the inner tube, the inner tube can rotate relative to the outer tube, so that the first fixing component can be switched between a first fixing position and a first release position to be connected with or separated from the first end, and the second fixing component is sleeved on the outer tube and configured to be capable of moving between a second fixing position and a second release position along the axial direction of the outer tube to be connected with or separated from the second end; the first and second securing positions correspond to a contracted state and the first and second releasing positions correspond to an expanded state.
In one embodiment, the first fixing component comprises a base arranged on the inner tube and a first fixing part arranged on the base, the first fixing part comprises a main body, a first extending part and a second extending part, the main body extends along the axial direction of the inner tube and is arranged in a direction away from the base, the first extending part extends from the main body along the radial direction of the inner tube and is arranged in a direction close to or far away from the inner tube, the second extending part extends from the first extending part along the axial direction of the inner tube and is arranged in a direction close to the base, and a mounting groove is formed in the periphery of the main body, the first extending part and the second extending part and is used for mounting the first end.
In one embodiment, the end surface of the first extension portion far away from the main body is arc-shaped, the size of the second extension portion in the first direction is gradually reduced, and the first extension portion is used for enabling the first end to be separated from the second extension portion in the rotating process of the inner tube, and the first direction, the extension direction of the first extension portion and the axial direction of the inner tube are perpendicular to each other.
In one embodiment, the implanting device further comprises a shaft sleeve fixedly connected with the outer tube and sleeved on the inner tube, the shaft sleeve is provided with a containing groove, the containing groove extends along the circumferential direction of the shaft sleeve, the first fixing assembly further comprises a driving piece, the driving piece extends from the inner tube to the outside of the containing groove, and the driving piece can swing in the containing groove to drive the inner tube to rotate.
In one embodiment, the second fixing component comprises a body sleeved on the outer tube and a second fixing piece arranged on the body, the second fixing piece extends in a direction away from the first fixing piece, and the second fixing piece is used for fixing the second end.
In one embodiment, the implanting device further comprises a fixing cap, the fixing cap is arranged at one end, far away from the first fixing component, of the second fixing component, the fixing cap is fixedly sleeved on the outer tube, the fixing cap is provided with a limiting groove and an opening communicated with the limiting groove, the second fixing component further comprises a limiting piece arranged on the body, the limiting groove is used for limiting the limiting piece so as to prevent the second fixing component from moving, and the opening is used for enabling the limiting piece to be separated from the limiting groove so that the second fixing component can be located at the second release position.
In one embodiment, the insertion device further comprises a receiving channel extending axially through the catheter for passage of an endoscope such that the endoscope can reach the end of the catheter adjacent the nasal cavity.
In one embodiment, the implanting device further comprises a third fixing component and a shaft sleeve, the third fixing component comprises a housing and an elastic piece, the housing is sleeved on the shaft sleeve and is configured to move along the axial direction of the shaft sleeve, the elastic piece is arranged between the shaft sleeve and the housing, the accommodating channel penetrates through the housing and the elastic piece, the housing is used for extruding or releasing the elastic piece, the elastic piece can stretch along the radial direction of the channel, and stretching of the elastic piece is used for locking or releasing the endoscope.
In one embodiment, the insertion device further comprises a coupling assembly, the housing being rotatably coupled to the hub by the coupling assembly, the coupling assembly being configured to translate rotation of the housing into axial movement along the hub.
A second aspect of the present application provides a method of operating a delivery system for a luminal procedure comprising: sleeving the bracket on the catheter, and fixing the first end and the second end to the first fixing component and the second fixing component respectively; the stent is conveyed to a preset position in the nasal cavity by moving the imbedding device; separating the first end and the second end from the first securing assembly and the second securing assembly, respectively; the insertion device is removed from the nasal cavity.
In the conveying system for the cavity operation, the two ends of the bracket are respectively fixed by the first fixing component and the second fixing component, so that the whole bracket can be conveyed into the nasal cavity by the imbedding device in a contracted state; the first fixing component and the second fixing component are separated from the two ends of the bracket respectively, so that the whole bracket can be switched from a contracted state to an expanded state, an operation channel is formed in the bracket in the expanded state, and a doctor can perform an operation in the operation channel. The operation difficulty of fixing or separating the two ends of the bracket through the first fixing component and the second fixing component is small, so that the operation of a doctor is facilitated, and the improvement of the operation efficiency is facilitated.
Drawings
Fig. 1 is a schematic view of a stent fixed on an implanting device according to an embodiment of the present application.
Fig. 2 is a schematic diagram of an apparatus for placement in an embodiment of the present application.
FIG. 3 is an exploded view of a portion of an insertion device according to one embodiment of the present application.
Fig. 4 is a schematic view of a first fixing component according to an embodiment of the application.
Fig. 5 is a schematic view of a second fixing component according to an embodiment of the application.
FIG. 6 is a cross-sectional view of an insertion device according to an embodiment of the present application.
The reference numerals are: the stent 1, the insertion device 2, the catheter 10, the inner tube 11, the outer tube 12, the first fixing member 20, the base 21, the first fixing member 22, the main body 221, the first extending portion 222, the second extending portion 223, the mounting groove 224, the driving member 23, the second fixing member 30, the main body 31, the second fixing member 32, the stopper 33, the boss 40, the accommodation groove 41, the fixing cap 50, the stopper groove 51, the opening 52, the accommodation passage 60, the third fixing member 70, the housing 71, the elastic member 72, the connecting member 80, the external thread 81, the internal thread 82.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, if any, 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 application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; 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 application can be understood by those of ordinary skill in the art according to the specific circumstances.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
The embodiment of the application provides a conveying system for a cavity operation, which can facilitate a doctor to perform the cavity operation and can avoid the damage of an instrument to the cavity. In the disclosed embodiments, the lumen is a nasal cavity and the delivery system is applied to a transnasal procedure. It will be appreciated that the delivery system may also be applied to other lumens, such as the esophagus, etc.
Referring to fig. 1, a delivery system for a luminal procedure includes a stent 1 and an insertion device 2. The stent 1 has a contracted state and an expanded state, the outer diameter of the stent 1 in the contracted state being smaller than the outer diameter of the stent 1 in the expanded state, and at the same time, the length of the stent 1 in the contracted state being smaller than the length of the stent 1 in the expanded state; specifically, the expanded state is an initial state of the stent 1, the stent 1 can be stretched in the axial direction to a contracted state, and the stent 1 can be self-expanded from the contracted state to the expanded state without being subjected to a tensile force. The stent 1 can form an operation channel in an expanded state, the operation channel is used for a doctor to finish a transnasal operation, and the stent 1 can avoid the damage of a surgical instrument to nasal mucosa in the operation process. The stent 1 is arranged on the implanting device 2, the implanting device 2 comprises a front end and a rear end, the front end is used for extending into the nasal cavity, and the rear end is used for being operated by a doctor so as to convey the stent 1 to a preset position in the nasal cavity.
In the embodiment disclosed in the application, the bracket 1 is hollow and cylindrical.
The insertion device 2 enables the stent 1 to be switched between a contracted state and an expanded state, specifically: when the implanting device 2 is connected with the stent 1, the stent 1 can be stretched along the axial direction, so that the length of the stent 1 is increased, the outer diameter is reduced, and the stent 1 is switched from an expanded state to a contracted state; the insertion device 2 can also be separated from the stent 1 so that the stent 1 can be restored from the contracted state to the expanded state under its own elastic and memory properties. It will be appreciated that the stent 1 remains in the contracted state prior to the insertion device 2 being introduced into the nasal cavity, and that the stent 1 remains in the expanded state after the insertion device 2 has been introduced into the nasal cavity and separated from the stent 1.
Referring to fig. 2, the insertion device 2 includes a catheter 10, a first fixation assembly 20, and a second fixation assembly 30. The first fixing component 20 and the second fixing component 30 are arranged on the catheter 10 at intervals along the axial direction of the catheter 10, the stent 1 is sleeved on the periphery of the catheter 10, the stent 1 comprises a first end and a second end which are oppositely arranged, and the first fixing component 20 and the second fixing component 30 are respectively connected with the first end and the second end in a separable way. When the first fixing component 20 and the second fixing component 30 are respectively connected with the first end and the second end, the bracket 1 is fixed on the catheter 10 in a contracted state; the stent 1 switches from the contracted state to the expanded state when the first and second securing members 20, 30 are separated from the first and second ends, respectively.
The first end and the second end are both provided with meshes, the first fixing component 20 can penetrate through the meshes of the first end, and the second fixing component 30 can penetrate through the meshes of the second end, so that the fixing of the bracket 1 and the imbedding device 2 is realized.
Referring to fig. 3, the catheter 10 includes an inner tube 11 and an outer tube 12. The inner tube 11 is rotatable relative to the outer tube 12, the first securing assembly 20 is fixedly connected to the end of the inner tube 11, the first securing assembly 20 is rotatable with the inner tube 11, the first securing assembly 20 comprises a first securing position and a first removal position, and the inner tube 11 is rotatable for switching the first securing assembly 20 between the first securing position and the first release position. The outer tube 12 is sleeved on the inner tube 11, the second fixing component 30 is sleeved on the outer tube 12, the second fixing component 30 comprises a second fixing position and a second detaching position, the second fixing component 30 can move between the second fixing position and the second releasing position along the axial direction of the outer tube 12, more specifically, the process that the second fixing component 30 moves along the axial direction of the outer tube 12 towards the direction far away from the first fixing component 20 is the process that the second fixing component 30 moves towards the second fixing position, and the process that the second fixing component 30 moves along the axial direction of the outer tube 12 towards the direction near to the first fixing component 20 is the process that the second fixing component 30 moves towards the second detaching position.
In the embodiment disclosed in the present application, the inner tube 11 and the outer tube 12 are both pipe members having a certain thickness.
Specifically, when the first fixing component 20 is at the first fixing position, the first end can be connected with the first fixing component 20, when the second fixing component 30 is at the second detaching position, the second end can be connected with the second fixing component 30, the second fixing component 30 stretches the bracket 1 during the process of moving the second fixing component 30 from the second detaching position to the second fixing position, the first end is gradually tensioned due to the connection of the first end with the first fixing component 20, and when the second fixing component 30 reaches the second fixing position, the bracket 1 is fixed on the catheter 10 in a contracted state; the first securing assembly 20 is separable from the first end when rotated from the first securing position to the first releasing position, and the second securing assembly 30 is separable from the second end when moved from the second securing position to the second releasing position, at which time the stent 1 is switched from the contracted state to the expanded state.
Referring to fig. 4, the first fixing assembly 20 includes a base 21 and a first fixing member 22. The base 21 is disposed on the inner tube 11, the first fixing member 22 is disposed on the base 21, the base 21 is used for providing a mounting position for the first fixing member 22, and the first fixing member 22 is used for fixing the first end of the bracket 1. In the embodiment of the application, a plurality of first fixing members 22 are provided, and the plurality of first fixing members 22 are arranged at intervals along the circumferential direction of the base 21, so that the problem that the first end cannot be completely converged can be avoided by arranging the plurality of first fixing members 22.
The first fixing member 22 includes a main body 221, a first extension 222, and a second extension 223. The main body 221 is disposed on the base 21, the main body 221 extends in the axial direction of the inner tube 11 and in a direction away from the base 21, the first extension portion 222 extends from the main body 221 in the radial direction of the inner tube 11 and in a direction toward the inner tube 11, and the second extension portion 223 extends from the first extension portion 222 in the axial direction of the inner tube 11 and in a direction toward the base 21. The main body 221, the first extension 222 and the second extension 223 are formed with a mounting groove 224, the first end is received in the mounting groove 224, the mounting groove 224 includes a notch, and the mesh of the first end can be hung on the second extension 223 through the notch. When the first fixing component 20 is at the first fixing position, the first extending portion 222 and the second extending portion 223 can prevent the first end from being separated from the mounting groove 224, so as to fix the first end and the first fixing piece 22.
In other embodiments, the first extension 222 may also be disposed to extend from the main body 221 along the radial direction of the inner tube 11 and in a direction away from the inner tube 11, and the manner of disposing the first extension may also form the mounting groove 224.
The end surface of the first extension portion 222 far from the main body 221 is arc-shaped, the size of the second extension portion 223 in the first direction is gradually reduced, and the first direction, the extension direction of the first extension portion 222 and the axial direction of the inner tube 11 are perpendicular to each other. With the above arrangement, during the rotation of the first fixing member 20 from the first fixing position to the first removing position, the first end slides on the arc-shaped end surface of the first extending portion 222, and then slides on the end surface of the second extending portion 223 until the mesh of the first end is separated from the second extending portion 223, so that the first end is separated from the first fixing member 22.
Referring to fig. 3, the first securing assembly 20 further includes a driver 23 and the insertion device 2 further includes a sleeve 40. The shaft sleeve 40 is fixedly connected with the outer tube 12 and sleeved on the inner tube 11, the shaft sleeve 40 is provided with a containing groove 41, the containing groove 41 is arranged along the circumferential direction of the shaft sleeve 40, the driving piece 23 extends from the inner tube 11 to the outside of the containing groove 41, a doctor can operate the driving piece 23 to swing in the containing groove 41, and the swing of the driving piece 23 can be converted into the rotation of the inner tube 11 around the axis of the doctor, so that the first fixing assembly 20 rotates from the first fixing position to the first detaching position; or from the first removal position to the first securing position.
The number of the accommodating grooves 41 and the driving members 23 is set correspondingly, and 1, 2, etc. of the accommodating grooves 41 may be set. In the embodiment disclosed by the application, 2 accommodating grooves 41 are formed, two accommodating grooves 41 are correspondingly formed, 2 driving members 23 are formed, and 2 driving members 23 are respectively positioned in 2 accommodating grooves 41.
Referring to fig. 5, the second fixing assembly 30 includes a body 31 and a second fixing member 32. The body 31 is annular, and the outer tube 12 is located to body 31 cover, and body 31 is used for installing second mounting 32, and second mounting 32 is used for fixed second end. In the embodiment of the application, a plurality of second fixing members 32 are provided, and the plurality of second fixing members 32 are arranged at intervals along the circumferential direction of the body 31, so that the problem that the second end cannot be completely converged can be avoided by arranging the plurality of second fixing members 32.
The second securing member 32 may be in the form of a post/rod, with the second securing member 32 being curved away from the first securing member 22. When the second fixing component 30 is at the second dismounting position, the grid at the second end can be hung to the first fixing piece 22, and in the process that the second fixing component 30 moves from the second dismounting position to the second fixing position, the second fixing piece 32 can stretch the bracket 1, and when the second fixing component 30 is at the second fixing position, the second fixing piece 32 can prevent the second end from being separated from the second fixing piece, so that the second end and the second fixing piece 32 are fixed. It will be appreciated that when the second fixing assembly 30 is moved from the second detached position to the second fixing position, the bracket 1 is not pulled by the second fixing member 32, and the bracket 1 can self-expand to separate the second end from the second fixing member 32.
Referring to fig. 3, the insertion device 2 further includes a securing cap 50. The fixing cap 50 is disposed at one end of the second fixing component 30 away from the first fixing component 20, the fixing cap 50 is annular integrally, the fixing cap 50 is fixedly sleeved on the outer tube 12, the fixing cap 50 is detachably connected with the second fixing component 30, specifically, when the second fixing member 32 is located at the second fixing position, the second fixing component 30 is connected with the fixing cap 50, and when the second fixing component 30 is located at the second dismounting position, the second fixing component 30 is separated from the fixing cap 50.
The fixing cap 50 is provided with a limiting groove 51 and an opening 52. The limiting groove 51 extends along the circumferential direction of the fixing cap 50, the opening 52 is communicated with the limiting groove 51 and extends along the axial direction of the fixing cap 50, the opening 52 penetrates through the end portion, close to the second fixing assembly 30, of the fixing cap 50, and the opening 52 and the limiting groove 51 are combined to form a C shape.
As shown in connection with fig. 4 and 6, the second securing assembly 30 further includes a stop 33. The limiting member 33 is disposed on the body 31, and the limiting member 33 extends along a radial direction of the body 31. In the process of moving the second fixing assembly 30 from the second disassembling position to the second fixing position, the limiting piece 33 can pass through the opening 52, then the second fixing assembly 30 is turned by a small extent, the limiting piece 33 can be located in the limiting groove 51, and the limiting groove 51 is used for limiting the limiting piece 33, so that the second fixing assembly 30 cannot move from the second fixing position to the second disassembling position. The opening 52 enables the stopper 33 to be separated from the stopper groove 51, and when the stopper 33 is located in the receiving groove 41, the second fixing assembly 30 is first rotated by a small amount, and then the stopper 33 can be moved from the second fixing position to the second removing position through the opening 52.
Referring again to fig. 3, regarding the positional arrangement of the first fixing member 20, the second fixing member 30, the fixing cap 50 and the sleeve 40, in the embodiment of the present disclosure, the first fixing member 20, the second fixing member 30, the fixing cap 50 and the sleeve 40 are sequentially arranged to the catheter 10. Specifically, the catheter 10 includes a front end and a rear end, the front end is an end of the catheter 10 entering the nasal cavity, the first fixing component 20 is located at the front end of the catheter 10, the second fixing component 30 and the fixing cap 50 are located at the middle section of the catheter 10, and the shaft sleeve 40 is located at the rear end of the catheter 10. Further, the sleeve 40 is fixedly connected to the outer tube 12 by a fixing cap 50.
Referring to fig. 6, the insertion device 2 further includes a receiving channel 60 extending axially through the catheter 10. The accommodating channel 60 is used for passing an endoscope, and a lens is arranged at the end of the endoscope, and can reach the front end of the catheter 10 after passing through the accommodating channel 60. Through setting up accommodation channel 60, can make up endoscope and device 2 of putting into as an organic wholely, the camera lens of endoscope is convenient for doctor observe the position of device 2 entering nasal cavity of putting into, and the doctor can carry support 1 to the nasal cavity in the visual circumstances promptly, guarantees that support 1 can be carried to accurate position. It will be appreciated that the lens of the endoscope does not extend outside the catheter 10, which reduces contact between the endoscope and the nasal cavity and prevents damage to the nasal cavity by the endoscope.
The insertion device 2 further includes a third fixation assembly 70 and a connection assembly 80. The third fixing component 70 is disposed on the sleeve 40, and the receiving channel 60 penetrates the third fixing component 70, so that the endoscope can reach the front end of the catheter 10 through the whole implantation device 2. The third fixing assembly 70 is configured to be movable in an axial direction of the sleeve 40, and movement of the third fixing assembly 70 serves to lock or release the endoscope. The connection assembly 80 is disposed between the third fixing assembly 70 and the sleeve 40, and the connection assembly 80 serves to convert rotation of the housing 71 into axial movement along the sleeve 40.
The connection assembly 80 includes external threads 81 and internal threads 82. The external thread 81 and the internal thread 82 are provided on the outer peripheral surface of the boss 40 and the inner peripheral surface of the housing 71 in opposition, and the movement thereof in the axial direction of the boss 40 is achieved by rotating the housing 71.
The third fixing assembly 70 includes a housing 71 and an elastic member 72. The casing 71 includes a closed end and an open end 52, the open end 52 is used for accommodating the end of the sleeve 40, the closed end is used for installing the elastic element 72, specifically, the elastic element 72 is located between the sleeve 40 and the casing 71, the elastic element 72 is annular, the outer ring of the elastic element 72 abuts against the inner wall of the casing 71, the inner ring of the elastic element 72 is enclosed to form the accommodating channel 60, and the elastic element 72 can lock or release the endoscope under the movement of the casing 71. Specifically, the endoscope is placed in the accommodating channel 60, the housing 71 is rotated in the forward direction, the housing 71 is moved in the direction approaching the shaft sleeve 40, during the movement, the elastic member 72 is pressed between the closed end and the shaft end, the thickness of the elastic member 72 is gradually reduced along with the rotation of the housing 71, the diameter of the inner ring of the elastic member 72 is gradually reduced until the housing 71 cannot continue to rotate, at this time, the inner ring of the elastic member 72 presses the endoscope, and the endoscope is locked in the accommodating channel 60; the housing 71 is reversely rotated, the housing 71 is moved in a direction away from the sleeve 40, and during the movement, the pressing force of the elastic member 72 by the housing 71 is gradually reduced, and as the housing 71 is rotated, the elastic member 72 is gradually restored to the original state, and at this time, the endoscope can freely move in the accommodation channel 60.
The housing 71 presses the elastic member 72, so that the elastic member 72 is deformed in both the axial direction and the radial direction, and the endoscope is locked by the deformation in the radial direction. Further, the deformation amount of the elastic member 72 in the radial direction is adjusted by the rotation number of the housing 71, and the elastic member 72 with different deformation amounts can lock endoscopes with different sizes, for example, for a large-size endoscope, the rotation number of the housing 71 is smaller, and then the elastic member 72 can lock the endoscope with smaller deformation amount in the radial direction; alternatively, for a small-sized endoscope, the housing 71 may be rotated a little more, so that the elastic member 72 may be deformed more in the radial direction to lock the endoscope. The elastic member 72 can be arranged to match endoscopes of different sizes to meet different use requirements.
An embodiment of the present application provides a method of operating a delivery system for a luminal procedure, the method comprising:
s100, sleeving the bracket 1 on the catheter 10, and fixing the first end and the second end to the first fixing component 20 and the second fixing component 30 respectively, wherein the steps specifically comprise:
s101, the inner tube 11 is rotated by operating the driving piece 23, and meanwhile, the first fixing assembly 20 rotates to a first fixing position along with the inner tube 11, and meshes at the first end of the bracket 1 are hung on the first fixing piece 22.
S102, the limiting piece 33 is separated from the limiting groove 51 through the operation body 31, the second fixing assembly 30 is moved to the second disassembling position through the opening 52, the mesh at the second end of the bracket 1 is hung on the second fixing piece 32, then the second fixing assembly 30 is moved to the second fixing position, and the limiting piece 33 is placed in the limiting groove 51 through the operation body 31.
The stent 1 may be fixed to the catheter 10 in the contracted state by the above-described steps, and it is understood that the operation sequence of S101 and S102 is not limited, and may be selected according to the actual situation, and it is preferable to operate S101 first and then S102.
S200, the stent 1 is conveyed to a preset position in the nasal cavity by moving the imbedding device 2.
S300, separating the first end and the second end from the first fixing component 20 and the second fixing component 30 respectively, wherein the steps specifically comprise:
s301, the inner tube 11 is rotated by operating the driving member 23, and the first fixing assembly 20 is rotated from the first fixing position to the first detaching position following the inner tube 11, at which time the first end is separated from the first fixing member 22.
S302, the limiting piece 33 is separated from the limiting groove 51 through the operation body 31, the second fixing assembly 30 is moved to the second disassembling position through the opening 52, the bracket 1 can be self-expanded under the condition of not being under tension, and at the moment, the second end is separated from the second fixing piece 32.
By switching the stent 1 from the contracted state to the expanded state in the nasal cavity through the above steps, it will be understood that the operation sequence of S301 and S302 is not limited, and may be selected according to the actual situation, and preferably, S302 is operated first and S301 is operated second.
S400, the implantation device 2 is moved out of the nasal cavity, and a doctor can operate in an operation channel formed by the bracket 1.
In some embodiments, the above-mentioned operation method further includes step S500, where step S500 is performed before step S100 or step S200, and step S500 specifically includes:
s501, the endoscope is inserted into the accommodating channel 60 until the lens of the endoscope reaches the front end of the catheter 10.
S502, the elastic piece 72 is pressed against the endoscope by rotating the shell 71, so that the endoscope is locked in the accommodating channel 60, the implantation device 2 is placed into the nasal cavity under the view of the endoscope, a doctor can observe the position of the implantation device 2 in the nasal cavity through the lens, and after the position reaches a proper position, the step S300 can be performed.
The channel system simplifies the operation difficulty of doctors before the nasal operation, and the bracket and the endoscope can be easily connected with the imbedding device, thereby improving the operation efficiency. The imbedding device can be made of materials such as polymer, stainless steel, aluminum alloy and the like, can be used for multiple times, and reduces the production cost.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (11)
1. A delivery system for a luminal procedure comprising:
a stent comprising a first end and a second end disposed opposite each other, the stent having a contracted state and an expanded state;
the device comprises a catheter, a first fixing component and a second fixing component, wherein the first fixing component and the second fixing component are arranged on the catheter at intervals along the axial direction of the catheter, the stent is sleeved on the periphery of the catheter, the first fixing component and the second fixing component are respectively connected with the first end and the second end in a separable way, and the first fixing component and the second fixing component can enable the stent to be switched between a contracted state and an expanded state and fix the stent in the contracted state to the catheter.
2. The system of claim 1, wherein the catheter comprises an inner tube and an outer tube surrounding the inner tube, the first securing assembly is fixedly connected to the inner tube, the inner tube is rotatable relative to the outer tube such that the first securing assembly is switchable between a first securing position and a first release position to connect or disconnect the first end, and the second securing assembly is surrounding the outer tube and is configured to be movable in an axial direction of the outer tube between a second securing position and a second release position to connect or disconnect the second end;
the first and second securing positions correspond to the contracted state and the first and second releasing positions correspond to the expanded state.
3. The system of claim 2, wherein the first fixing assembly comprises a base disposed on the inner tube and a first fixing member disposed on the base, the first fixing member comprises a main body, a first extending portion and a second extending portion, the main body extends along an axial direction of the inner tube and in a direction away from the base, the first extending portion extends from the main body along a radial direction of the inner tube and in a direction approaching or separating from the inner tube, the second extending portion extends from the first extending portion along an axial direction of the inner tube and in a direction approaching from the base, and the main body, the first extending portion and the second extending portion are provided with mounting grooves for mounting the first end.
4. A luminal surgical delivery system according to claim 3, wherein the first extension is curved away from the end surface of the main body, and the second extension is tapered in the first direction so as to allow the first end to disengage from the second extension during rotation of the inner tube, and the first direction, the extension direction of the first extension, and the axial direction of the inner tube are perpendicular to each other.
5. The system of claim 4, wherein the insertion device further comprises a sleeve fixedly connected to the outer tube and sleeved on the inner tube, the sleeve being provided with a receiving groove extending circumferentially of the sleeve, the first fixing assembly further comprising a driving member extending from the inner tube to the outside of the receiving groove, the driving member being capable of swinging in the receiving groove to drive the inner tube to rotate.
6. The system of claim 2, wherein the second securing assembly comprises a body disposed over the outer tube and a second securing member disposed on the body, the second securing member extending away from the first securing member, the second securing member configured to secure the second end.
7. The system of claim 6, wherein the insertion device further comprises a retaining cap disposed at an end of the second retaining member away from the first retaining member and fixedly disposed on the outer tube, the retaining cap being provided with a retaining groove and an opening in communication with the retaining groove, the second retaining member further comprising a retaining member disposed on the body, the retaining groove being configured to retain the retaining member against movement of the second retaining member, the opening being configured to allow the retaining member to disengage from the retaining groove to allow the second retaining member to be positioned in the second release position.
8. The system of any one of claims 1-7, wherein the insertion device further comprises a receiving channel extending axially through the catheter for passage of an endoscope such that the endoscope can reach an end of the catheter adjacent the nasal cavity.
9. The system of claim 8, wherein the insertion device further comprises a third fixing assembly and a sleeve, the third fixing assembly comprises a housing and an elastic member, the housing is sleeved on the sleeve and configured to move along an axial direction of the sleeve, the elastic member is disposed between the sleeve and the housing, the receiving channel penetrates the housing and the elastic member, the housing is used for squeezing or releasing the elastic member, the elastic member can expand and contract along a radial direction of the channel, and the expansion and contraction of the elastic member is used for locking or releasing the endoscope.
10. The system of claim 9, wherein the insertion device further comprises a connection assembly through which the housing is rotatably coupled to the hub, the connection assembly being configured to translate rotation of the housing into axial movement along the hub.
11. A method of operation employing a delivery system for a luminal procedure as set forth in any one of claims 1-10, the method comprising:
sleeving the bracket on a catheter, and fixing the first end and the second end to the first fixing component and the second fixing component respectively;
delivering the stent to a preset location within the nasal cavity by moving the insertion device;
separating the first and second ends from the first and second securing assemblies, respectively;
the insertion device is moved out of the nasal cavity.
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| CN202311256759.1A CN117100473B (en) | 2023-09-27 | 2023-09-27 | Conveying system for cavity operation |
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| CN202311256759.1A CN117100473B (en) | 2023-09-27 | 2023-09-27 | Conveying system for cavity operation |
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| US20090076584A1 (en) * | 2007-09-19 | 2009-03-19 | Xtent, Inc. | Apparatus and methods for deployment of multiple custom-length prostheses |
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