CN113017786B - Conveying sheath pipe and conveying system - Google Patents
Conveying sheath pipe and conveying system Download PDFInfo
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- CN113017786B CN113017786B CN201911351255.1A CN201911351255A CN113017786B CN 113017786 B CN113017786 B CN 113017786B CN 201911351255 A CN201911351255 A CN 201911351255A CN 113017786 B CN113017786 B CN 113017786B
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- bottom plate
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- boss
- sealing assembly
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- 238000007789 sealing Methods 0.000 claims abstract description 139
- 238000000034 method Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 11
- 238000009434 installation Methods 0.000 description 13
- 239000008280 blood Substances 0.000 description 12
- 210000004369 blood Anatomy 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 10
- 230000000149 penetrating effect Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000000740 bleeding effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000002583 angiography Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000013152 interventional procedure Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3462—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
- A61B17/3439—Cannulas with means for changing the inner diameter of the cannula, e.g. expandable
- A61B2017/3441—Cannulas with means for changing the inner diameter of the cannula, e.g. expandable with distal sealing means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3462—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals
- A61B2017/3464—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals with means acting on inner surface of valve or seal for expanding or protecting, e.g. inner pivoting fingers
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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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
- A61M25/09041—Mechanisms for insertion of guide wires
Abstract
The invention belongs to the technical field of medical instruments, and particularly relates to a conveying sheath and a conveying system with the same. The conveying sheath pipe comprises a sheath pipe body and a conveying handle connected and communicated with the near end of the sheath pipe body, wherein a sealing assembly is arranged inside the conveying handle, a channel is formed inside the sealing assembly, at least one of the near end and the far end of the sealing assembly is sunken towards the inside of the sealing assembly to form a cavity, and the cavity is communicated with the channel so as to penetrate through the near end and the far end of the sealing assembly. According to the conveying sheath tube disclosed by the invention, the sealing effect of the conveying sheath tube in the process of establishing a passage for other interventional instruments can be effectively ensured, the leakage phenomenon is prevented, and the safety and the reliability of equipment operation are improved.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a conveying sheath and a conveying system with the same.
Background
Delivery sheaths are commonly used to establish access to a vessel for catheters, guidewires, coils, stents, occluders, filter retrieval devices, or other interventional instruments during a cardiovascular interventional procedure or angiography or other medical procedure. The use of the conveying sheath enables the operation to be more convenient and fast, facilitates the leading-in of instruments, improves the operation efficiency, reduces the blood vessel injury in the operation and prevents the blood loss. The existing conveying sheath tube is used for establishing a channel for an interventional instrument in an operation, and is not convenient for operation of a doctor due to the fact that the sealing effect is poor, the blood leakage phenomenon is easy to occur, the safety of the operation is not facilitated, and the clinical use requirement cannot be effectively met.
Disclosure of Invention
The invention aims to at least solve the problem of poor sealing effect of a conveying sheath in the process of establishing a passage for an interventional instrument.
One aspect of the present invention provides a delivery sheath, which includes a sheath body and a delivery handle connected to and communicating with a proximal end of the sheath body, wherein a sealing assembly is disposed inside the delivery handle, a channel is disposed inside the sealing assembly, at least one of the proximal end and the distal end of the sealing assembly is recessed into the sealing assembly to form a cavity, and the cavity is communicated with the channel so as to penetrate through the proximal end and the distal end of the sealing assembly.
According to the conveying sheath tube, the sealing assembly is arranged in the conveying handle, the sealing assembly is internally provided with a channel, at least one of the near end and the far end of the sealing assembly is sunken towards the inside of the sealing assembly to form a cavity, and the cavity is communicated with the channel so as to penetrate through the near end and the far end of the sealing assembly, wherein the channel is used for penetrating an interventional instrument; when the interventional device penetrates into or penetrates out of the sealing assembly, the interventional device can impact and drive the sealing assembly to deform, the cavity is used for enabling the sealing assembly to have a deformation space after deformation and dispersing impact force, the contact part of the interventional device and the sealing assembly can deform, the phenomenon that the sealing assembly is poor in sealing effect and bleeding is caused due to the fact that the whole structure of the sealing assembly deforms relative to the conveying handle is avoided, and therefore the conveying sheath tube can effectively guarantee the sealing effect of the conveying sheath tube in the process of establishing a passage for the interventional device, the generation of the blood leakage phenomenon is prevented, the convenience and the reliability in the clinical operation process are improved, the operation risk is reduced, and the safety of clinical operation is improved.
In addition, the delivery sheath according to the invention may also have the following additional technical features:
in some embodiments of the present invention, the sealing assembly includes a first sealing element and a second sealing element, a proximal end of the first sealing element and a distal end of the second sealing element abut against each other, the channel includes a first through hole and a second through hole, the first through hole is disposed on the first sealing element, the second through hole is disposed on the second sealing element, and the first through hole and the second through hole are communicated with each other.
In some embodiments of the present invention, the cavity includes a first cavity or/and a second cavity, the first sealing element includes a first circumferential portion and a first bottom plate portion, the first bottom plate portion is disposed on an end surface of the first circumferential portion facing the second sealing element, the first bottom plate portion and the first circumferential portion surround the first cavity, and the first bottom plate portion is provided with the first through hole; or/and
the second sealing element comprises a second circumferential portion and a second bottom plate portion, the second bottom plate portion is arranged on the end face, facing the first sealing element, of the second circumferential portion, the second bottom plate portion and the second circumferential portion enclose a second cavity, and the second bottom plate portion is provided with the second through hole.
In some embodiments of the present invention, the first seal further comprises a first boss disposed on an end surface of the first circumferential portion away from the second seal, the first boss protruding from an outer sidewall of the first circumferential portion or being flush with the outer sidewall of the first circumferential portion.
In some embodiments of the present invention, the first boss is further provided with a first groove thereon.
In some embodiments of the invention, the second seal further comprises a second boss provided on an end face of the second circumferential portion remote from the first seal, the second boss protruding from or being flush with an outer side wall of the second circumferential portion.
In some embodiments of the present invention, a second groove is further provided on the second boss.
In some embodiments of the present invention, a first fixing portion is disposed on the first sealing member, a second fixing portion is disposed on the second sealing member, and the first fixing portion and the second fixing portion are fixed to each other in a matching manner.
In some embodiments of the present invention, the delivery handle further includes a connecting seat and a rear end cap, the proximal end of the sheath body is communicated with the distal end of the connecting seat, the proximal end of the connecting seat is connected with the rear end cap, an installation cavity is disposed between the proximal end of the connecting seat and the rear end cap, the sealing assembly is disposed in the installation cavity, and the sealing assembly is tightly fitted with the proximal end of the connecting seat and the rear end cap.
In another aspect of the present invention, there is also provided a delivery system having the delivery sheath described in any one of the above.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. Wherein:
FIG. 1 is an exploded view of a sheath according to one embodiment of the present invention;
FIG. 2 is a schematic partial cross-sectional view of the delivery sheath of FIG. 1;
FIG. 3 is a schematic structural view of the seal assembly of FIG. 1;
fig. 4 is a schematic view of the sealing assembly of fig. 3 from another perspective.
In the drawings, the reference numerals denote the following:
100: a delivery sheath;
101: conveying handle, 10: connecting seat, 11: connecting seat body, 12: first connection end, 13: second connection end, 14: exhaust port, 15: a first connecting passage;
20: a sheath body;
30: rear end cap, 31: a second connecting channel;
40: seal assembly, 41: first seal, 411: first cavity, 412: first circumferential portion, 413: first bottom plate portion, 414: first through hole, 415: first boss, 416: first groove, 417: first fixing portion, 418: notch, 42: second seal, 421: second cavity, 422: second circumferential portion, 423: second floor portion, 424: second through hole, 425: second boss, 426: second groove, 427: second fixing portion, 51: installation inclined plane, 21: a bell mouth;
50: a front end cap;
60: a connecting pipe;
70: and a three-way valve.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "in 8230 \8230; below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
For ease of description, the following description uses the terms "proximal" and "distal", where "proximal" refers to the end proximal to the operator and "distal" refers to the end distal from the operator, the phrase "axial direction", as understood herein to refer to the direction in which the interventional instrument is advanced and advanced, and a direction perpendicular to "axial direction" is defined as a "radial direction".
An embodiment of the present invention provides a conveying sheath 100, fig. 1 is an exploded view of the conveying sheath 100 according to an embodiment of the present invention, and fig. 2 is a partial cross-sectional view of the conveying sheath 100 in fig. 1. As shown in fig. 1 and 2, the delivery sheath 100 in the present embodiment includes a sheath body 20 and a delivery handle 101, and the proximal end of the sheath body 20 is connected to and communicates with the delivery handle 101.
In this embodiment, the delivery handle 101 includes a sealing assembly 40, and the proximal and distal ends of the sealing assembly 40 are each recessed inwardly of the sealing assembly 40 to form a first chamber 411 and a second chamber 421. The interior of the seal assembly 40 has a passage 44, the passage 44 being used for the passage of an interventional instrument in and out. The first chamber 411, the channel 44 and the second chamber 421 communicate to extend through the proximal and distal ends of the seal assembly 40. In other embodiments, at least one of the proximal and distal ends of the seal assembly 40 is recessed inwardly of the seal assembly 40.
In this embodiment, the maximum inner diameter of the first cavity 411 and the maximum inner diameter of the second cavity 421 are both larger than the maximum inner diameter of the channel 44. It should be noted that the first chamber 411, the second chamber 421 and the channel may be cylindrical or have other irregular shapes, and if the irregular shape is formed, the maximum inner diameter refers to the maximum length perpendicular to the conveying direction. The passage 44 with the smaller maximum inner diameter can be used for penetrating an interventional instrument, so that the inner diameter is prevented from being larger, blood leakage is caused in the penetrating or penetrating process of the interventional instrument, and the first cavity 411 and the second cavity 421 have larger maximum inner diameters and can provide larger deformation space.
The handle of the conveying handle 101 further comprises a connecting seat 10 and a rear end cover 30, a first connecting channel 15 is arranged in the connecting seat 10, and an exhaust port 14 communicated with the first connecting channel 15 is further arranged on the connecting seat 10. The sheath tube body 20 is arranged at one end of the connecting seat 10 and is communicated and connected with the first connecting channel 15, the rear end cover 30 is provided with a second connecting channel 31, the rear end cover 30 is arranged at the other end of the connecting seat 10, an installation cavity is further arranged between the rear end cover 30 and the connecting seat 10, the sealing assembly 40 is arranged in the installation cavity, and the peripheral surface of the sealing assembly 40 is tightly matched and hermetically connected with the inner wall surface of the installation cavity. The sealing member 40 is provided with a passage for communicating the first connection passage 15 and the second connection passage 31, wherein the first chamber 411 is disposed at a position adjacent to the first connection passage 15, and the second chamber 421 is disposed at a position adjacent to the second connection passage 31. In other embodiments, the sealing assembly 40 can ensure the sealing performance of the delivery handle 101 as long as the sealing assembly 40 can be disposed in the delivery handle 101, and other structures in the delivery handle can be set according to different requirements.
According to the conveying sheath tube 100, the sealing assembly 40 is arranged between the connecting seat 10 and the rear end cover 30, the sealing assembly 40 is provided with the channel 44 for communicating the first connecting channel 15 and the second connecting channel 31, the first cavity 411 is arranged at a position close to the first connecting channel 15, and the second cavity 421 is arranged at a position close to the second connecting channel 31, when an interventional instrument is inserted into the first connecting channel 15 and the sheath tube body 20 through the second connecting channel 31, the sealing assembly 40 deforms towards the direction of the first connecting channel 15 under the action of impact force of the interventional instrument, the arranged first cavity 411 is a deformation space, so that the contact part of the interventional instrument and the sealing assembly deforms in the deformation space, the first cavity 411 is of a cavity structure, the impact force can be dispersed, the whole deformation of the sealing assembly 40 can be effectively reduced, the sealing performance of the sealing assembly 40 and the installation cavity is maintained, and the bleeding phenomenon caused by poor sealing effect of the sealing assembly 40 in the instrument insertion process is reduced; when the interventional device is pulled out of the sheath tube body 20, the sealing assembly 40 deforms towards the direction of the second connecting channel 31 under the action of the impact force of the interventional device, the second cavity 421 is a deformation space, the contact part of the interventional device and the sealing assembly deforms in the deformation space, the first cavity 411 is a cavity structure, the impact force can be dispersed, and the deformation of the sealing assembly 40 can be effectively reduced, so that the sealing performance of the sealing assembly 40 and the installation cavity is maintained, and the bleeding phenomenon caused by poor sealing effect of the sealing assembly 40 in the instrument pulling-out process is reduced.
As shown in fig. 1 and 2, in some embodiments of the present invention, the coupling socket 10 includes a coupling socket body 11, and a first coupling end 12 and a second coupling end 13 respectively provided at both ends of the coupling socket body 11. In order to ensure the air tightness of the connection between the sheath body 20 and the first connection channel 15, in some embodiments of the present invention, the delivery sheath 100 further includes a front end cap 50. The outer circumferential surface of the first connection end 12 is provided with external threads, and the interior of the front end cover 50 is provided with internal threads which can be matched with the outer circumferential surface of the first connection end 12.
The proximal end of the sheath body 20 is fixed between the first connection end 12 and the front end cap 50, and the lumen in the sheath body 20 is made to communicate with the first connection passage 15. In fig. 1, the proximal end of the sheath body 20 includes a flare 21. The proximal end of the sheath body 20 penetrates into the front end cap 50 in such a manner that the distal end of the sheath body 20 penetrates into the proximal end of the front end cap 50 until the flared opening 21 abuts against the opening of the front end cap 50. The bell mouth 21 is fixed between the front cover 50 and the first connection end 12, and the front cover 50 and the first connection end 12 are connected in a thread fit manner. In order to ensure the coaxiality of the first connecting channel 12 and the lumen in the sheath body 20, the distal end of the front end cover 50 is provided with an installation inclined surface 51 for positioning the bell mouth 21 at the proximal end of the sheath body 20, so as to ensure the coaxiality of the sheath body 20 and the first connecting channel 15 and ensure the smooth proceeding of the penetrating process of other interventional instruments. In other embodiments of the present invention, the proximal end of the sheath body 20 may be directly inserted into the first connecting channel 15, or the sheath body 20 and the first connecting end 12 may be connected in other manners, and the specific connection manner is not limited, so that the lumen of the sheath body 20 and the first connecting channel 15 can be connected to each other and the air tightness can be ensured.
The outer peripheral surface of the second connecting end 13 of the connecting seat 10 is also provided with an external thread, the inner part of the rear end cover 30 is provided with an internal thread matched with the outer peripheral surface of the second connecting end 13, and the second connecting end 13 and the rear end cover 30 are also connected in a thread fit manner. After the second connection end 13 and the rear end cap 30 are connected, a mounting cavity for mounting the sealing assembly 40 is formed between the second connection end 13 and the rear end cap 30. The outer peripheral surface of the sealing assembly 40 is connected with the inner wall surface of the mounting cavity in a sealing manner, so that the sealing performance of the conveying sheath tube 20 is ensured, and blood is prevented from flowing out from a gap between the outer peripheral surface of the sealing assembly 40 and the inner wall surface of the mounting cavity. In the use process of the delivery sheath 100, the end cap at the proximal end of the delivery sheath 100 is the rear end cap 30, and the end cap at the distal end of the delivery sheath 100 is the front end cap 50.
Be equipped with the gas vent 14 on the connecting seat body 11, gas vent 14 communicates with each other with first connecting channel 15 and is connected to can insert and extract the in-process of carrying sheath 20 at other intervention apparatus and discharge the gas in carrying sheath 20 through gas vent 14, prevent to have gas to enter into patient's blood in the treatment process, guarantee the normal flow of blood.
When the delivery sheath 20 is used to access an interventional device such as a coil, an occluder, a filter, a stent, etc., the interventional device is inserted into the delivery sheath 100 from the proximal end of the delivery sheath 100, i.e., from the rear end cap 30 side, and other interventional devices sequentially pass through the second connection channel 31, the sealing member 40, the first connection channel 15 and the sheath body 20, thereby reaching the affected part.
In some embodiments of the present invention, the delivery sheath 100 further comprises a connection tube 60 and a three-way valve 70. One end of the connection pipe 60 is connected to the exhaust port 14, and the other end of the connection pipe 60 is connected to the three-way valve 70, so that the gas in the transportation sheath 100 can be effectively discharged through the connection pipe 60 and the three-way valve 70. Preferably, the connection pipe 60 is a hose, such as a rubber hose, so as to facilitate the adjustment of the placement position of the three-way valve 70.
Fig. 3 is a schematic structural view of the sealing assembly 40 of fig. 1. Fig. 4 is a schematic view of the sealing assembly 40 shown in fig. 3 from another perspective. As shown in fig. 3 and 4, in some embodiments of the present invention, the seal assembly 40 includes a first seal 41 and a second seal 42. The first sealing member 41 is provided with a first cavity 411 (see fig. 2), and the first sealing member 41 is further provided with a first through hole 414 penetrating the first cavity 411. The second sealing member 42 is provided with a second cavity 421 (see fig. 2), and the second sealing member 42 is further provided with a second through hole 424 penetrating through the second cavity. Wherein the first through-hole 414 and the second through-hole 424 communicate with each other, thereby constituting the passage 44 (see fig. 2). In other embodiments, the seal assembly 40 may be a unitary structure. In other embodiments, only one of the first and second seals 41, 42 has a cavity structure.
Through setting up first cavity 411 and second cavity 421, can guarantee effectively that the in-process that intervenes the apparatus and insert and extract transport sheath pipe 100 all can have the cavity as the deformation space, this deformation space can make intervene the apparatus and produce deformation in this deformation space with the part (that is the part near first through-hole 414 and second through-hole 424) of seal assembly contact, and cavity structure can disperse the impact force, can reduce seal assembly 40 whole deformation for the transport handle effectively, guarantee the inside sealed effect of transport sheath pipe 100. In order to ensure that the first sealing element 41 and the second sealing element 42 have a certain deformation performance, the first sealing element 41 and the second sealing element 42 may be made of a material having a certain recoverable deformation function, such as silicone or silicone.
The first seal 41 and the second seal 42 may be provided with the same elastic modulus or may be provided with different elastic moduli. The larger the value of the elastic modulus, the harder the seal and the less likely deformation will occur. The elastic modulus of the first sealing element 41 can be set to be smaller than that of the second sealing element 42, so that the material of the first sealing element 41 is soft, the trafficability of other interventional instruments is stronger, the material of the second sealing element 42 at the proximal end is harder, and the second sealing element 42 is not easy to deform, so that the sealing performance is ensured.
In some embodiments of the present invention, the first seal 41 includes a first circumferential portion 412 and a first bottom plate portion 413. The first bottom plate 413 is disposed on an end surface of the first circumferential portion 412 facing the second sealing member 42, the first bottom plate 413 is provided with a first through hole 414, and the first circumferential portion 412 and the first bottom plate 413 together enclose a first cavity 411 (see fig. 2). The second seal 42 includes a second circumferential portion 422 and a second bottom plate portion 423. The second bottom plate portion 423 is disposed on an end surface of the second circumferential portion 422 facing the first sealing member 41, the second bottom plate portion 423 is provided with a second through hole 424, and the second circumferential portion 422 and the second bottom plate portion 423 jointly enclose a second cavity 421 (see fig. 2).
As shown in fig. 3 and 4, the first cavity 411 of the first sealing member 41 and the second cavity 421 of the second sealing member 42 are both bowl-shaped structures, one end of the bowl-shaped structure is open, and the first bottom plate portion 413 and the second bottom plate portion 423 are attached to each other.
In the process of inserting the conveying sheath tube 100 into the interventional device, the first bottom plate part 413 and the second bottom plate part 423 deform towards the first cavity 411, and due to the fact that the cavity structure of the first cavity 411 can provide a deformation space for the first bottom plate part 413 and the second bottom plate part 423, impact force can be dispersed, the impact force can be greatly weakened to be transmitted to the first circumferential part 412 and the second circumferential part 422, the sealing assembly can be prevented from moving relative to the conveying handle in the installation cavity, the sealing performance can be enhanced, and the occurrence of blood leakage can be reduced.
In the process of pulling out the conveying sheath tube 100 by other interventional instruments, the first bottom plate part 413 and the second bottom plate part 423 deform towards the second cavity 421, and the cavity structure of the second cavity 421 can provide a deformation space for the first bottom plate part 413 and the second bottom plate part 423, and impact force can be dispersed, so that the impact force can be greatly weakened to be transmitted to the first circumferential part 412 and the second circumferential part 422, the movement of the whole sealing component in the installation cavity relative to the conveying handle can be avoided, the sealing performance can be enhanced, and the occurrence of blood leakage phenomenon can be reduced.
Because the first bottom plate portion 413 and the second bottom plate portion 423 are attached to each other, when the second bottom plate portion 423 deforms toward the first cavity 411, the first bottom plate portion 413 can also counteract a portion of the force of the second bottom plate portion 423 toward the first cavity 411 under the impact force of the interventional instrument; or when the first bottom plate portion 413 deforms toward the second cavity 421, the second bottom plate portion 423 can also counteract a force of a part of the first bottom plate portion 413 toward the second cavity 421 under the impact force of the interventional instrument.
In another embodiment of the present invention, the first through hole 414 of the first bottom plate 413 is in a straight shape, and the second through hole 424 of the second bottom plate 423 is in a circular shape. When the sheath core, the guide wire or other interventional devices pass through the sealing assembly 40, the circular through hole on the second bottom plate portion 423 can tightly wrap the catheter, the guide wire or other devices, so that the blood leakage phenomenon can be effectively prevented, and meanwhile, the straight through hole on the first bottom plate portion 413 can provide good passing performance for the sheath core, the guide wire or other interventional devices to pass through, and has a certain moving space. When the sheath core, the guide wire or other instruments are pulled out from the delivery sheath 100, the second sealing element 42 attached to the first sealing element 41 can provide a good supporting force for the first sealing element 41, so that the linear through hole of the first sealing element 41 can be closed, and a good sealing effect can be achieved. The second seal 42 also provides a second barrier to a small amount of blood when it is leaking, thereby further reducing the occurrence of blood leakage. The shapes of the first through-hole 414 and the second through-hole 424 are not limited thereto, and in other embodiments of the present invention, the first through-hole 414 and the second through-hole 424 may also be provided as a cross-shaped through-hole and a cross-shaped through-hole.
In other embodiments of the present invention, one of the first sealing member 41 and the second sealing member 42 may be provided in a structure form having bottom plate portions at both ends, and a corresponding through hole for allowing other interventional instruments to pass therethrough may be provided in the bottom plate portion. Alternatively, the first sealing member 41 and the second sealing member 42 are both configured to have bottom plate portions at both ends thereof, and corresponding through holes for allowing an interventional instrument to pass therethrough are provided in the bottom plate portions, which can achieve the purpose of solving the technical problems in the present application.
In some embodiments of the present invention, the first sealing element 41 further includes a first boss 415, the first boss 415 is disposed on an end surface of the first circumferential portion 412 facing the first connecting channel 15, and the first boss 415 protrudes from an outer side wall of the first circumferential portion 412. The second seal member 42 further includes a second projection 425, the second projection 425 being provided on an end surface of the second circumferential portion 422 facing the second connecting passage 31, the second projection 425 projecting from an outer side wall of the second circumferential portion 422.
In some embodiments of the present invention, the first sealing element 41 and the second sealing element 42 are both engaged with the inner wall surface of the installation cavity through the boss, so as to achieve the sealing effect of the sealing assembly 40. Because the first boss 415 and the second boss 425 protrude out of the corresponding circumferential parts, in the process of matching the sealing assembly 40 with the mounting cavity, only the first boss 415 and the second boss 425 are deformed by the extrusion force, the first bottom plate part 413 and the second bottom plate part 423 are not deformed, the deformation of the first through hole 414 and the second through hole 423 is not further influenced, and the smooth insertion and extraction of the intervening instrument into and out of the sealing assembly 40 are ensured. In other embodiments, the first boss 415 may be flush with an outer sidewall of the first circumferential portion 412 and the second boss 425 may be flush with an outer sidewall of the second circumferential portion 422.
In some embodiments of the present invention, the first boss 415 is further provided with a first groove 416 on an end surface thereof, and the second boss 425 is further provided with a second groove 426 on an end surface thereof. In the process of connecting the rear end cover 30 and the second connecting end 13, the end face of the first boss 415 is attached to the second connecting end 13, the end face of the second boss 425 is attached to the rear end cover 30, the sealing assembly 40 is deformed by the extrusion of the rear end cover 30 and the second connecting end 13, so that the gas in the first groove 416 and the gas in the second groove 426 are discharged, the first boss 415 and the second boss 425 generate suction between the respective corresponding end faces, the first groove 416 and the second groove 426 form sealing rings on the respective corresponding end faces, and therefore the sealing effect between the outer peripheral face of the sealing assembly 40 and the inner wall face of the installation cavity is further ensured. In other embodiments, the sides of the first and second bosses 415, 425 may also be provided with grooves.
In this embodiment, when the first boss 415 and the second boss 425 are both annular bosses, the first recess 416 and the second recess 426 are both annular recesses. In other embodiments, at least one of the first and second bosses 415, 425 may include a plurality of protrusions distributed around the circumference of the circumferential portion, and grooves may be formed between the plurality of protrusions.
In some embodiments of the present invention, the first sealing member 41 is provided with a first fixing portion 417, and the second sealing member 42 is provided with a second fixing portion 427 adapted to match the first fixing portion 417. Specifically, as shown in fig. 3 and 4, the first fixing portion 417 is a protruding end provided on the outer peripheral surface of the first circumferential portion 412 and facing the second seal member 42, and the second fixing portion 427 is a groove provided on the outer peripheral surface of the second circumferential portion 422, and the protruding end can be inserted into the groove in a shape-fitting manner, so as to connect and fix the first seal member 41 and the second seal member 42, and the first bottom plate portion 413 and the second bottom plate portion 423 are brought into close contact with each other, thereby positioning the first seal member 41 and the second seal member 42 in the axial direction and the circumferential direction, and effectively preventing the first seal member 41 and the second seal member 42 from being displaced. The first fixing portion 417 may be a recess, and the second fixing portion 427 may be a protruding end matching the recess in shape.
In some embodiments of the present invention, the outer peripheral surface of the first circumferential portion 412 is further provided with a notch 418, so that when the first boss 415 is deformed by pressing, there is enough deformation space to prevent further pressing of the first circumferential portion 412, and the hole diameter of the first through hole 414 is ensured to be unchanged. Accordingly, a notch may also be provided on the outer peripheral surface of the second circumferential portion 422.
In another aspect of the present invention, a delivery system is further provided, which has the delivery sheath 100 of any one of the above embodiments, and further includes an interventional device such as a catheter, a guide wire or a stent, which can be inserted into the sheath body 20 through the second connecting channel 31, the sealing assembly 40 and the first connecting channel 15 in sequence, and finally reach the affected part.
While the invention has been described with reference to specific preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A conveying sheath tube is characterized by comprising a sheath tube body and a conveying handle connected with and communicated with the proximal end of the sheath tube body, wherein a sealing assembly is arranged inside the conveying handle, a channel is formed inside the sealing assembly, at least one of the proximal end and the distal end of the sealing assembly is sunken into the sealing assembly to form a cavity, and the cavity is communicated with the channel so as to penetrate through the proximal end and the distal end of the sealing assembly;
the sealing assembly comprises a first sealing element and a second sealing element, the first sealing element comprises a first circumferential portion and a first bottom plate portion, the first sealing element further comprises a first boss, the first boss is arranged on the first circumferential portion and far away from the end face of the second sealing element, the first boss protrudes out of the outer side wall of the first circumferential portion or the first boss is parallel and level with the outer side wall of the first circumferential portion, and a first groove is further formed in the first boss.
2. The delivery sheath of claim 1, wherein the proximal end of the first seal and the distal end of the second seal abut against each other, the channel comprises a first through hole and a second through hole, the first through hole is provided in the first seal, the second through hole is provided in the second seal, and the first through hole and the second through hole are in communication with each other.
3. The delivery sheath of claim 2, wherein the lumen comprises a first lumen or/and a second lumen,
the first bottom plate part is arranged on the end face, facing the second sealing element, of the first circumferential part, the first cavity is formed by the first bottom plate part and the first circumferential part in a surrounding mode, and the first through hole is formed in the first bottom plate part; or/and
the second sealing element comprises a second circumferential portion and a second bottom plate portion, the second bottom plate portion is arranged on the end face, facing the first sealing element, of the second circumferential portion, the second cavity is defined by the second bottom plate portion and the second circumferential portion, and the second through hole is formed in the second bottom plate portion.
4. The delivery sheath of claim 3, wherein the second seal further comprises a second boss provided at an end face of the second circumferential portion remote from the first seal, the second boss protruding from or being flush with an outer sidewall of the second circumferential portion.
5. The delivery sheath of claim 4, wherein the second boss is further provided with a second groove thereon.
6. The delivery sheath according to claim 2, wherein a first fixing portion is provided on the first sealing member, a second fixing portion is provided on the second sealing member, and the first fixing portion and the second fixing portion are fitted and fixed to each other.
7. The delivery sheath according to claim 1, wherein the delivery handle further comprises a connecting seat and a rear end cap, the proximal end of the sheath body is communicated with the distal end of the connecting seat, the proximal end of the connecting seat is connected with the rear end cap, a mounting cavity is arranged between the proximal end of the connecting seat and the rear end cap, the sealing component is arranged in the mounting cavity, and the sealing component is tightly fitted with the proximal end of the connecting seat and the rear end cap.
8. A delivery system, comprising a delivery sheath according to any one of claims 1 to 7.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211311640.5A CN115814237A (en) | 2019-12-24 | 2019-12-24 | Conveying sheath pipe and conveying system |
| CN201911351255.1A CN113017786B (en) | 2019-12-24 | 2019-12-24 | Conveying sheath pipe and conveying system |
| US17/770,367 US20220387757A1 (en) | 2019-12-17 | 2020-10-26 | Sheath |
| PCT/CN2020/123758 WO2021120853A1 (en) | 2019-12-17 | 2020-10-26 | Sheath |
| CA3161285A CA3161285A1 (en) | 2019-12-17 | 2020-10-26 | Sheath |
| EP20902663.2A EP4079231A4 (en) | 2019-12-17 | 2020-10-26 | Sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911351255.1A CN113017786B (en) | 2019-12-24 | 2019-12-24 | Conveying sheath pipe and conveying system |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211311640.5A Division CN115814237A (en) | 2019-12-24 | 2019-12-24 | Conveying sheath pipe and conveying system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113017786A CN113017786A (en) | 2021-06-25 |
| CN113017786B true CN113017786B (en) | 2023-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211311640.5A Pending CN115814237A (en) | 2019-12-24 | 2019-12-24 | Conveying sheath pipe and conveying system |
| CN201911351255.1A Active CN113017786B (en) | 2019-12-17 | 2019-12-24 | Conveying sheath pipe and conveying system |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211311640.5A Pending CN115814237A (en) | 2019-12-24 | 2019-12-24 | Conveying sheath pipe and conveying system |
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| Country | Link |
|---|---|
| CN (2) | CN115814237A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113827312B (en) * | 2021-09-18 | 2023-06-13 | 晨兴(南通)医疗器械有限公司 | Delivery system for pulmonary artery embolectomy |
| CN113974775B (en) * | 2021-11-17 | 2023-05-16 | 上海腾复医疗科技有限公司 | Sheath sealing device and thrombus aspiration system comprising same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4895346A (en) * | 1988-05-02 | 1990-01-23 | The Kendall Company | Valve assembly |
| JP4996015B2 (en) * | 2001-03-12 | 2012-08-08 | メディキット株式会社 | Indwelling catheter |
-
2019
- 2019-12-24 CN CN202211311640.5A patent/CN115814237A/en active Pending
- 2019-12-24 CN CN201911351255.1A patent/CN113017786B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115814237A (en) | 2023-03-21 |
| CN113017786A (en) | 2021-06-25 |
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Effective date of registration: 20231227 Address after: 518000 1604, Xianjian technology building, No. 22, Keji South 12th Road, gaoxinyuan community, Yuehai street, Nanshan District, Shenzhen, Guangdong Province Patentee after: Shenzhen Jianxin Medical Technology Co.,Ltd. Address before: 518000 1st-5th Floor of Saiba Research Building, Langshan Second Road, North District of Nanshan High-tech Industrial Park, Shenzhen City, Guangdong Province Patentee before: LIFETECH SCIENTIFIC (SHENZHEN) Co.,Ltd. |
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