CN110547898A - Artificial valve's conveying equipment - Google Patents
Artificial valve's conveying equipment Download PDFInfo
- Publication number
- CN110547898A CN110547898A CN201910838515.1A CN201910838515A CN110547898A CN 110547898 A CN110547898 A CN 110547898A CN 201910838515 A CN201910838515 A CN 201910838515A CN 110547898 A CN110547898 A CN 110547898A
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- CN
- China
- Prior art keywords
- tube
- outer tube
- inner tube
- connecting rod
- sheath
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2427—Devices for manipulating or deploying heart valves during implantation
- A61F2/2436—Deployment by retracting a sheath
Abstract
The application discloses prosthetic valve's delivery apparatus includes: handle, outer tube, sheath pipe, inner tube. The handle comprises an outer tube releasing mechanism and a sheath tube releasing mechanism; the far end of the outer tube is provided with a first cavity, the near end of the outer tube is connected with an outer tube releasing mechanism, and the outer tube releasing mechanism drives the outer tube to move; the sheath tube is provided with a second cavity and is matched with the distal end of the outer tube so as to utilize the first cavity and the second cavity to jointly accommodate the artificial valve; the inner tube is arranged in the outer tube in a penetrating mode, the distal end of the inner tube is connected with the sheath tube, the proximal end of the inner tube is connected with the sheath tube releasing mechanism, the sheath tube releasing mechanism drives the inner tube, and then the inner tube drives the sheath tube to move. Through the mode, the implantation precision of the valve can be improved.
Description
Technical Field
The application relates to the field of medical equipment, in particular to a delivery device of an artificial valve.
Background
the aortic valve is a semilunar valve, located between the left ventricle and the aorta, that inhibits blood injected into the aorta from flowing back into the left ventricle, morphologically resembling the pulmonary valve. When the function of the active valve is damaged, the health of the human body is seriously affected, and even death can be caused.
The aortic valve in the artificial valve is conveyed into the human body through the conveyor, so that the replacement of the aortic valve is realized, and the eosin is brought to the person with the damaged aortic valve. The use of an active valve transporter to deliver a prosthetic valve to replace a functionally compromised active valve has become mainstream.
Disclosure of Invention
the technical problem that this application mainly solved provides a prosthetic valve's conveying equipment, can improve the implantation precision of valve.
In order to solve the technical problem, the application adopts a technical scheme that: a prosthetic valve delivery apparatus is provided, comprising: a handle comprising an outer tube release mechanism and a sheath release mechanism; the far end of the outer pipe is provided with a first cavity, the near end of the outer pipe is connected with an outer pipe releasing mechanism, and the outer pipe releasing mechanism drives the outer pipe to move; the sheath tube is provided with a second cavity and is matched with the far end of the outer tube so as to utilize the first cavity and the second cavity to jointly contain the artificial valve; the inner tube is worn to locate in the outer tube, and the sheath pipe is connected to the distal end of inner tube, and sheath pipe release mechanism is connected to the near-end of inner tube, and sheath pipe release mechanism transmission inner tube, and then drive the sheath pipe by the inner tube and remove.
Compared with the prior art, the beneficial effects of this application are: the first cavity and the second cavity are respectively arranged at the far ends of the outer tube and the sheath tube, the outer tube and the sheath tube are jointly used for accommodating the artificial valve, the outer tube is driven by the outer tube releasing mechanism to move along the direction away from the sheath tube, the artificial valve positioned in the first cavity can be released firstly, the expected position is positioned, the inner tube is driven by the sheath tube releasing mechanism to drive the sheath tube to move along the direction away from the outer tube, the artificial valve in the second cavity can be released completely, the valve can be released in a segmented mode, the valve can be released firstly, the part released firstly can be accurately positioned and can enable the sheath tube to be kept stable, the valve released later can be released accurately and stably, the implantation precision of the valve is improved, and the operation is simple.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present application;
FIG. 2 is an enlarged schematic view of the SS region of an embodiment of the present application;
FIG. 3 is a schematic diagram of the conveying apparatus of the present application implementing conveying process step 2;
FIG. 4 is a schematic diagram of the conveying apparatus of the present application implementing conveying process step 3;
FIG. 5 is a schematic diagram of the conveying apparatus of the present application implementing conveying process step 4;
Fig. 6 is a schematic diagram of the conveying equipment of the present application implementing the conveying process step 5.
Detailed Description
the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 and 2, fig. 1 is a schematic diagram of a delivery apparatus of an embodiment of a prosthetic valve of the present application, and fig. 2 is an enlarged view of the SS region of an embodiment of the present application.
As shown in fig. 1 and 2, the delivery device described in the embodiments of the delivery device for a prosthetic valve of the present application includes a handle 10, an outer tube 20, a sheath 30, and an inner tube 40. The handle 10 may be used to facilitate gripping and manipulation by an operator. The handle 10 may include an outer tube release mechanism 11 and a sheath release mechanism 12. The outer tube release mechanism 11 and the sheath release mechanism 12 may be arranged adjacently, for example in sequence along the extension direction of the delivery device. The outer tube release mechanism 11 and the sheath release mechanism 12 may be relatively independent to be able to be operated independently. Through setting up outer tube release mechanism 11 and sheath pipe release mechanism 12, can make outer tube release mechanism 11 drive outer tube 20 and remove, drive inner tube 40 through sheath pipe release mechanism 12 and remove for inner tube 40 drives sheath pipe 30 and removes. The outer tube 20, the sheath tube 30 and the inner tube 40 may be a braided tube, a non-braided tube, etc., and the preparation material may be: polycarbonate (PC), polyether block Polyamide (PEBAX), thermoplastic polyurethane elastomer rubber (TPU) and other high polymer materials or a composite pipe formed by fusing metal cutting pipes and the high polymer materials.
The inner tube 40 is inserted through the outer tube 20. The inner tube 40 is used to connect the sheath 30 and the sheath release mechanism 12 of the handle 10. The sheath 30 may be disposed adjacent to the outer tube 20, and the sheath 30 is sleeved on the inner tube 40. The outer tube 20 has a distal end and a proximal end, e.g., the end proximal to the handle 10 is the proximal end and the end distal to the handle 10 is the distal end. The distal end of the outer tube 20 may be formed with a first cavity 21 for receiving a prosthetic valve. The shape of the first cavity 21 may be cylindrical, prismatic, elliptic cylindrical, etc. Of course, the shape and size of the first cavity 21 of the outer tube 20 can be designed or adjusted according to the shape of the prosthetic valve to be accommodated and other practical situations, so that the prosthetic valve can be better accommodated in the outer tube 20, and the variety of the prosthetic valves that can be accommodated in the outer tube 20 can be more abundant. In some embodiments, the first cavity 21 of the outer tube 20 may also be provided with a mounting member for mating with a prosthetic valve, so that the prosthetic valve can be more stably received in the first cavity 21. The mounting member is, for example, a ring.
The proximal end of the outer tube 20 may be drivingly connected to the outer tube release mechanism 11 such that an operator may move the outer tube 20 via the outer tube release mechanism 11. The moving direction of the outer tube 20 may be a direction away from the sheath 30, that is, the outer tube releasing mechanism 11 may drive the outer tube 20 to move away from the sheath 30, so that the first cavity 21 of the outer tube 20 and the second cavity 31 of the sheath 30 are moved away from each other, and thus, a portion of the artificial valve accommodated in the first cavity 21 is exposed in a process that the first cavity 21 is moved away from the sheath 30, and is not pressed by the outer tube 20 and is released. The proximal end of the outer tube 20 is driven by the outer tube release mechanism 11, for example, by a screw drive, a spring-elastic drive, a pneumatic drive, a push-pull drive, a belt or chain drive, a motor drive, etc.
In this embodiment, the sheath 30 may be provided with a second cavity 31 that may be used to house a prosthetic valve. Specifically, the sheath 30 and the outer tube 20 may be disposed adjacent to each other, with the first and second cavities 21, 31 cooperating to receive a prosthetic valve. For example, the first cavity 21 houses a portion of the prosthetic valve and the second cavity 31 houses another portion of the prosthetic valve. The artificial valve accommodated by the first cavity 21 and the second cavity 31 may be integrated or may be two-part valves independent of each other. The second cavity 31 of the sheath 30 may also be cylindrical, prismatic, elliptical cylindrical, etc. The shape and size of the second cavity 31 can be adjusted according to the shape of the prosthetic valve to be accommodated, so that the prosthetic valve can be accommodated in the sheath 30 better, and the variety of the prosthetic valves that can be accommodated in the sheath 30 is also richer.
Specifically, the inner tube 40 may also have a distal end and a proximal end, with the end proximal to the handle 10 being the proximal end and the end distal to the handle 10 being the distal end. The distal end of the inner tube 40 may be coupled to the sheath 30 and the proximal end of the inner tube 40 may be drivingly coupled to the sheath release mechanism 12. When the inner tube release mechanism 12 transmits the inner tube 40, the inner tube 40 can drive the sheath 30 to move, and the moving direction can be a direction away from the outer tube 20, so that the second cavity 31 is further away from the first cavity 21, and thus, a part of the artificial valve accommodated in the second cavity 31 can be exposed when the sheath 30 is away from the outer tube 20, and is released without being pressed by the sheath 30. The proximal end of the inner tube 40 is in driving connection with the sheath release mechanism 12, for example, by a screw drive, a spring elastic drive, a pneumatic drive, a direct push drive, a belt or chain drive, a motor drive, etc. The distal end of the inner tube 40 is connected to the sheath 30 by gluing, welding, or the like.
For example, the first cavity 21 has a first opening (not labeled) on a side facing the sheath 30, and the second cavity 31 has a second opening (not labeled) on a side adjacent to the outer tube 20. In one embodiment, the first and second openings may abut each other, and the first and second cavities 21 and 31 cooperate to cooperatively receive the prosthetic valve such that the prosthetic valve is completely received within the sheath 30 and the outer tube 20. In another embodiment, the distal end of the outer tube 20 having the first opening is inserted into the second opening of the sheath 30, which corresponds to the nested arrangement of the outer tube 20 and the sheath 30, and the first cavity 21 and the second cavity 31 cooperate with each other to accommodate the prosthetic valve, such that the prosthetic valve is completely accommodated inside the sheath 30 and the outer tube 20. Of course, the end of the sheath 30 having the second opening may also be inserted into the first opening of the outer tube 20.
In an exemplary application scenario, after the sheath 30 of the delivery apparatus is placed in the human body to reach a desired position, the outer tube 20 is driven to move by the outer tube release mechanism 11, so that the prosthetic valve in the first cavity 21 is partially exposed due to the movement of the first cavity 21, and thus the exposed portion is released, and the exposed portion of the prosthetic valve can play a role in positioning, so that a subsequent prosthetic valve can be released at the desired position. Then, after the positioning is completed, the outer tube 20 is driven to move by the outer tube releasing mechanism 11, so that the part of the artificial valve still in the first cavity 21 is exposed and released. Finally, the inner tube 40 is driven by the sheath release mechanism 12, and the sheath 30 is moved by the inner tube 40, so that the valve in the second cavity 31 is released, and finally the valve can be finally implanted to the desired position.
The outer tube releasing mechanism 11 of the present embodiment can perform two or more operations, so that the outer tube 20 driven by the outer tube releasing mechanism 11 can also move twice or more correspondingly, and the artificial valve accommodated in the first cavity 21 of the outer tube 20 can be released for multiple times, thereby realizing the segmented release of the valve. Similarly, the sheath releasing mechanism 12 can also perform two or more operations, and the sheath 30 driven by the sheath releasing mechanism 12 can also move twice or more correspondingly, so that the artificial valve accommodated in the second cavity 31 of the sheath 30 can be released for multiple times, thereby realizing the segmented release of the valve.
The handle 10 includes an outer tube release mechanism 11 and a sheath release mechanism 12, and the outer tube release mechanism 11 is used to drive the outer tube 20 to move, so that the artificial valve in the outer tube 20 is at least partially released, and a desired position can be located. After the precise positioning is achieved, the outer tube release mechanism 11 continues to drive the outer tube 20 to move, so that the artificial valve in the outer tube 20 can be completely released. Through utilizing sheath release mechanism 12 transmission inner tube 40, and then drive sheath 30 by inner tube 40 and move for the prosthetic valve in sheath 30 carries out stable release, makes the valve implant the anticipated position accurately, through the segmentation release of valve, can improve the stability and the precision of valve implantation, easy operation.
As shown in fig. 1, the handle 10 may further include a link 13. An accommodating chamber 131 may be provided inside the connecting rod 13 along an axial direction of the connecting rod 13, and a slot 132 may be provided on a sidewall of the connecting rod 13 along the axial direction of the connecting rod 13, and the slot 132 may communicate with the accommodating chamber 131. The outer tube 20 may be inserted into the accommodating cavity 131 of the connecting rod 13, for example, a portion of the outer tube 20 inserted into the accommodating cavity 131 may be coaxially disposed with or substantially coaxially disposed with the connecting rod, and the outer tube releasing mechanism 11 may transmit the axial movement of the portion of the outer tube 20 located in the accommodating cavity 131 along the connecting rod 13, so as to drive the distal end of the outer tube 20 to move. The inner tube 40 may be inserted into the accommodating cavity 131 of the connecting rod 13, for example, a portion of the inner tube 40 inserted into the accommodating cavity 131 may be coaxially disposed or substantially coaxially disposed with the connecting rod 13, the sheath releasing mechanism 12 may transmit the portion of the inner tube 40 located in the accommodating cavity 131 to move along the axial direction of the connecting rod 13, and the distal end of the inner tube 40 further drives the sheath 30 to move. In some embodiments, the slot 132 of the link 13 may extend from one end of the link 13 to the other. In other embodiments, the slot 132 of the link 13 may also be located between the ends of the link 13.
The outer tube release mechanism 11 may include an outer tube drive 111 and an outer tube fastener 112. The outer tube fixing member 112 may be disposed in the receiving cavity 131 of the connecting rod 13, and may be in transmission connection with the outer tube driving member 111 through a slot 132 on the connecting rod 13. The transmission mode of the outer tube transmission member 111 and the outer tube fixing member 112 may be a screw transmission, a spring elastic transmission, a pneumatic transmission, a direct push transmission, a belt or chain transmission, a motor transmission, etc. The proximal end of the outer tube 20 may extend into the receiving cavity 131 of the connecting rod 13 and be connected with the outer tube fixing member 112 by gluing, welding, etc. In this embodiment, the outer tube driving member 111 can drive the outer tube fixing member 112 to move along the slot 132 of the connecting rod 13, and the outer tube fixing member 112 moves along the slot 132 of the connecting rod 13 and simultaneously drives the outer tube 20 to move.
Through set up holding chamber 131 at connecting rod 13 for the inside of connecting rod 13 can be put into to outer tube mounting 112, and then through outer tube mounting 112 and outer tube 20 reciprocal anchorage, makes the outer tube 20 can not be because of the inside collision that rocks of conveying equipment and connecting rod 13 in the part of holding chamber 131 of connecting rod 13, damages outer tube 20. Further, by providing the slot 132 in the axial direction of the connecting rod 13, the outer tube fixing member 112 can be in transmission connection with the outer tube transmission member 111 through the slot 132, and then the outer tube fixing member 112 is driven to move along the slot 132, that is, the slot 132 can limit the moving direction of the outer tube fixing member 112, so that the outer tube fixing member 112 only moves in the axial direction of the connecting rod 13.
the outer tube driving member 111 and the outer tube fixing member 112 may be screw-engaged with each other. Specifically, the outer tube driving member 111 may be sleeved on the periphery of the connecting rod 13. A first spiral groove 1111 is provided on an inner wall of the outer pipe transmission member 111. In addition, the outer tube fixing member 112 is further provided with a first guide post 1121, and the first guide post 1121 can extend into the first spiral groove 1111 through the slot 132 of the connecting rod 13 to form a threaded engagement with the outer tube driving member 111. When the outer tube driving member 111 rotates around the connecting rod 13, the outer tube driving member 111 can drive the outer tube fixing member 112 to move along the slot 132 of the connecting rod 13 through a screw-thread fit. The first spiral groove 1111 that outer tube driving medium 111 set up, with the screw-thread fit of the first guide pillar 1121 of outer tube fixing member 112, can just drive the axial displacement of outer tube fixing member 112 along connecting rod 13 through rotatory outer tube driving medium 111, and then drive outer tube 20 and remove, and through rotatory mode transmission outer tube fixing member 112, can turn into the removal distance of outer tube fixing member 112 with the rotatory angle of outer tube driving medium 111, and rotatory angle is continuously adjustable, and then let the distance that outer tube fixing member 112 removed also continuously adjustable, make the removal distance of outer tube 20 also continuously adjustable simultaneously, thereby realized the accurate removal of outer tube 20, the precision of operation is improved.
The outer tube releasing mechanism 11 may further include an outer tube sleeve 113, the outer tube sleeve 113 is sleeved on the periphery of the outer tube driving member 111, the outer tube sleeve 113 may be fixedly connected to the outer tube driving member 111, and the fixing connection may be glue bonding, welding, screw fixing, and the like. Meanwhile, the outer tube driving part 111 is screw-engaged with the first guide post 1121 of the outer tube fixing part 112. At this time, when the outer tube sleeve 113 rotates around the connecting rod 13, the outer tube driving member 111 is driven to rotate correspondingly, and the outer tube fixing member 112 is driven to move along the axial direction of the connecting rod 13 through the screw thread fit.
The sheath release mechanism 12 may include an inner tube fixture 122 and an inner tube driver 121. The inner tube fixing member 122 may be disposed in the accommodating cavity 131 of the connecting rod 13, and may be in transmission connection with the inner tube transmission member 121 through a slot 132 on the connecting rod 13, where the transmission connection may be a threaded transmission, a spring elastic transmission, a pneumatic transmission, a direct-push transmission, a belt or chain transmission, a motor transmission, or the like. The proximal end of the inner tube 40 may extend into the receiving cavity 131 and be connected to the inner tube fixing member 122 by gluing, welding, etc. The inner tube driving member 121 can drive the inner tube fixing member 122 to move along the slot 132 of the connecting rod 13, so as to drive the inner tube 40 connected to the inner tube fixing member 122 to move. Through set up holding chamber 131 at connecting rod 13 for the inside of connecting rod 13 can be put into to inner tube mounting 122, and then through inner tube mounting 122 and inner tube 40 reciprocal anchorage, makes the part of inner tube 40 in holding chamber 131 of connecting rod 13 can not be because of the rocking of conveying equipment collide with the inside of connecting rod 13, damage inner tube 40. Further, by providing the slot 132 in the axial direction of the connecting rod 13, the inner tube fixing element 122 can be in transmission connection with the inner tube driving element 121 through the slot 132, and then the inner tube fixing element 122 is driven to move along the slot 132, that is, the slot 132 can limit the moving direction of the inner tube fixing element 122, so that the inner tube fixing element 122 only moves in the direction of the connecting rod 13.
The inner tube driving member 121 and the inner tube fixing member 122 may be engaged with each other by a screw. Specifically, the inner tube driving member 121 may be sleeved on the periphery of the connecting rod 13. A second spiral groove 1211 is formed on an inner wall of the inner pipe transmission member 121. In addition, the inner tube fixing member 122 is further provided with a second guide post 1221, and the second guide post 1221 can extend into the second spiral groove 1211 through the slot 132 of the connecting rod 13 to form a threaded engagement. When the inner tube driving member 121 rotates around the connecting rod 13, the inner tube driving member 121 can drive the inner tube fixing member 122 to move along the slot 132 of the connecting rod 13 through the screw-thread fit, so as to drive the inner tube 40 connected to the inner tube fixing member 122 to move. The second spiral groove 1211 formed on the inner tube driving member 121 is engaged with the thread of the second guiding post 1221 of the inner tube fixing member 122, so that the inner tube fixing member 122 can be driven to move along the axial direction of the connecting rod 13 by rotating the inner tube driving member 121, and further, the inner tube 40 can be driven to move. And through the rotatory mode transmission inner tube mounting 122, can turn into the moving distance of inner tube mounting 122 with the rotatory angle of inner tube driving medium 121, and the rotatory angle is continuous adjustable, and then makes the distance that inner tube mounting 122 moved also continuous adjustable, makes the moving distance of inner tube 40 also continuous adjustable simultaneously to realized the accurate removal of inner tube 40, improved the precision of operation.
In the delivery device of the other embodiments, the distal end of the inner tube 40 is further provided with a pushing portion (not shown), and is fixedly connected to the sheath 30 by gluing, welding, screwing, and the like. When the sheath release mechanism 12 drives the inner tube 40 to move, the pushing portion of the inner tube 40 can increase the contact area between the inner tube 40 and the sheath 30, so that when the inner tube 40 drives the sheath 30 to move, the force-bearing area is increased, and the movement of the sheath 30 is more stable.
As shown in fig. 1 and 2, the transport apparatus of the present embodiment may include a middle tube 61 and a middle tube holder 51. The middle tube fixing member 51 is disposed in the accommodating cavity 131 of the connecting rod 13, and may be configured to be fixed with respect to the connecting rod 13. The middle pipe 61 can be a woven pipe, a non-woven pipe and the like, and the preparation materials can be as follows: polycarbonate (PC), polyether block Polyamide (PEBAX), thermoplastic polyurethane elastomer rubber (TPU) and other high polymer materials or a composite pipe formed by fusing metal cutting pipes and the high polymer materials. In some embodiments, the securing may be by means such as glue, welding, screwing, or the like.
In this embodiment, the middle tube 61 can be disposed coaxially with the connecting rod 13, the middle tube 61 is disposed through the outer tube 20, and the inner tube 40 is disposed through the middle tube 61, so that the outer tube 20 and the inner tube 40 can move along the middle tube 61, and the middle tube 61 plays a role in limiting the movement direction of the outer tube 20 and the inner tube 40. In addition, the near end of the middle pipe 61 can be connected with the middle pipe fixing piece 51, so that the middle pipe 61 can be fixed relative to the connecting rod 13, the firmness of the middle pipe 61 is improved, and the middle pipe 61 cannot collide with the inside of the connecting rod 13 to damage the middle pipe 61. The proximal end of the middle tube 61 is connected to the middle tube fixing member 51 by gluing, welding, or the like. Meanwhile, since the proximal end of the middle tube 61 is fixed relative to the connecting rod 13, the inner tube 40 and the outer tube 20 are located at the portion of the connecting rod 13 and can move only in the axial direction of the connecting rod 13. That is, the middle tube 61 and the middle tube fixing member 51 also limit the movement of the outer tube 20 and the inner tube 40 in the accommodating cavity 131 of the connecting rod 13. The distal end of the middle tube 61 may be coaxially disposed with the first cavity 21 of the outer tube 20, thereby allowing the middle tube 61 to be located on the axis of the first cavity 21. The active valve can be mounted on the middle tube 61 and received in the first cavity 21 of the outer tube 20 and the second cavity 31 of the sheath 30. The portion of the middle tube 61 located in the first cavity 21 of the outer tube 20 can be used for hanging the valve when the active valve is placed in the first cavity 21, so as to fix the valve in the first cavity 21 of the outer tube.
Specifically, the middle pipe fixing member 51 may be a three-way fixing member, and the three-way fixing member may be provided with a first passage 511 in an axial direction along the link 13, and a second passage 512 communicating with the first passage 511 in an axial direction perpendicular to the link 13. The middle tube 61 and the inner tube 40 may be disposed along the first passage 511. The proximal end of the middle tube 61 may terminate upstream of the junction of the first passage 511 and the second passage 512 of the three-way fitting. In this embodiment, the end of the first passage 511 that is proximal to the outer tube release mechanism 11 is upstream and the end that is distal from the outer tube release mechanism 11 is downstream. In addition, the second passage 512 is communicated with the inner space of the middle tube 61, and before use, the physiological saline can be injected through the second passage 512 to exhaust the gas in the inner space of the middle tube 61. In other embodiments, the proximal end of the middle tube 61 may also terminate downstream of the junction of the first channel 511 and the second channel 512 of the three-way fastener, the second channel may pass through the wall of the middle tube 61 and communicate with the interior of the middle tube 61, and before use, the saline may be injected through the second channel 512 to remove the gas inside the middle tube 61. Of course, in some embodiments, a sealing ring (not shown) may be disposed upstream of a connection point of the first passage 511 and the second passage 512 to seal a gap between the middle tube 61 and the first passage 512, and a plug (not shown) may be disposed to tightly abut against the sealing ring to further enhance the sealing effect.
By securing the proximal end of the middle tube 61 upstream of the junction of the first channel 511 and the second channel 512 of the three-way fitting, such that the middle tube 61 is fixed relative to the linkage 13, the inner tube 40 and the outer tube 20 can move relative to the middle tube 61 as they are driven by the sheath release mechanism 12 and the outer tube release mechanism 11, respectively. Through setting up well pipe 61 and inner tube 40 along first passageway 511 setting, can let inner tube 40 when moving, be along the axial displacement of connecting rod 13, first passageway has played the effect to the removal spacing of inner tube 40. Meanwhile, the proximal end of the middle tube 61 is cut off at the upstream of the connection point of the first passage 511 and the second passage 512 of the three-way fixing piece, so that the tube wall of the middle tube 61 cannot block the inside of the middle tube 61 to be communicated with the second passage 512 of the three-way fixing piece. In this embodiment, middle pipe fixing member 51 is fixed to connecting rod 13 by fixing screw 60.
as shown in fig. 1, the delivery device of this embodiment may further include a plug 62 and a sealing ring 632. The plug 62 and sealing ring 632 may be located downstream of the junction of the first passage 511 and the second passage 512 of the three-way fitting and inside the first passage 511. The sealing ring 632 may be disposed around the inner tube 40 for sealing the gap between the inner tube 40 and the first passage 511. The plug 62 may further enhance the sealing effect by abutting against the sealing ring 632. The plug 62 and the sealing ring 632 may be made of rubber, metal, or the like.
As shown in fig. 2, the conveying apparatus of the present embodiment may further include a top ring 69. A top ring 69 may be disposed at the distal end of the middle tube 61, and the top ring 69 may be located within the second cavity 31 of the sheath 30. The prosthetic valve can be mounted on the top ring 69 such that when the sheath 30 is moved by the sheath release mechanism 12, the top ring 69 gradually moves away from the inside of the sheath 30 due to the movement of the sheath 30, and at this time, the prosthetic valve mounted on the top ring 69 also gradually moves away from the inside of the sheath 30 to be released. When the top ring 69 is completely removed from the interior of the sheath 30, the prosthetic valve is correspondingly completely removed from the interior of the sheath 30, and the prosthetic valve is fully released. Through set up the distal end of well pipe 61 with apical ring 69 and be located the second cavity 31 of sheath 30, can let the valve carry on apical ring 69, apical ring 69 has played the effect of fixed valve to carry the valve through apical ring 69, improved the precision when putting into second cavity 31 with the valve.
As shown in fig. 1, the delivery apparatus of the present embodiment may include a grip sleeve 64, a tail sleeve 66, and a fixing sleeve 65. The holding sleeve 64 can be sleeved and fixed at one end of the connecting rod 13 close to the sheath tube 30, the tail end sleeve 66 is sleeved and fixed at the other end of the connecting rod 13 far away from the sheath tube 30, the fixing sleeve 65 is sleeved and fixed at the periphery of the connecting rod 13 between the holding sleeve 64 and the tail end sleeve 66, and is fixedly connected with the connecting rod 13 and the middle tube fixing part 51, and the connection mode can be glue bonding, welding, screw fixation and the like.
The gripping sleeve 64 may be used for the operator to grip while operating. In addition, the holding sleeve 64 and the fixing sleeve 65 can limit the position of the outer tube sleeve 113 in the axial direction of the connecting rod 13, so that the outer tube sleeve 113 can only rotate relative to the connecting rod 13 and cannot move in the axial direction of the connecting rod 13. In this embodiment, the fixing sleeve 65 and the tail end sleeve 66 may limit the inner tube driving member 121 in the axial direction of the connecting rod 13, so that the inner tube driving member 121 can only rotate relative to the connecting rod 13 and cannot move in the axial direction of the connecting rod 13, and the outer tube fixing member 112 and the inner tube fixing member 122 are driven to move along the axial direction of the connecting rod 13 by the rotation of the outer tube sleeve 113 and the inner tube driving member 121 relative to the connecting rod 13.
Specifically, the wall of the fixed sleeve 65 may be provided with an opening, and the first passage 511 of the three-way fastener may extend outwardly from the slot 132 of the connecting rod 13 through the opening in the wall of the fixed sleeve 65. In other embodiments, the fixing sleeve 65 can be fixed on the outer periphery of the connecting rod 13 without being fixedly connected with the middle pipe fixing member 51.
as shown in fig. 1, the transport apparatus of the present embodiment may further include sealing rings 631, 633, and 634. The sealing ring 631 is disposed at an end of the connecting rod 13 close to the outer tube 20, and can seal a gap between the connecting rod 13 and the holding sleeve 64. The sealing ring 633 is sleeved on the fixing sleeve 65, and can seal a gap between the fixing sleeve 65 and the inner pipe transmission member 121. The seal ring 634 is disposed on the rear sleeve 66 to seal a gap between the rear sleeve 66 and the inner tube driving member 121. This improves the overall gas tightness of the conveying device.
As shown in fig. 1, the delivery device of the present embodiment may be provided with a buffer tube 67 and a stress diffusion tube 68 at one end of the connecting rod 13 near the sheath 30. The buffer tube 67, stress diffusion tube 68 may be arranged coaxially with the connecting rod 13. The buffer tube 67 may be sleeved around the outer tube 20. The buffer tube 67 is sleeved on the outer periphery of the outer tube 20, and can wrap the proximal end of the outer tube 20 to prevent the outer tube 20 from being damaged by touch. The stress diffusion tube 68 may be sleeved on the buffer tube 67 at a periphery of the end portion close to the connection rod 13 and fixedly connected to the connection rod 13 by glue, welding, screwing, and the like. In addition, the cross section of the stress diffusion tube 68 perpendicular to the axial direction of the connecting rod 13 is gradually increased in the direction close to the connecting rod 13, so that the buffer tube 67 is limited, and the buffer tube 67 cannot move in the cross section perpendicular to the axial direction of the connecting rod 13, and further contacts and rubs with the inner wall of the stress diffusion tube 68 to damage the buffer tube 67. In other embodiments, the stress diffusion tube 68 may also be fixed around the buffer tube 67 near the end of the connection rod 13 and fixedly connected to the connection rod 13.
The stress diffusion tube 68 is sleeved on the buffer tube 67, so that the buffer tube 67 is fixed on the axial direction of the connecting rod 13, the outer tube 20, the middle tube 61 and the inner tube 40 are also fixed on the axial direction of the connecting rod 13, the outer tube 20 and the inner tube 40 can only move along the axial direction of the connecting rod when moving, and the buffer tube 67 and the stress diffusion tube 68 play a limiting role in the movement of the outer tube 20 and the inner tube 40.
As shown in fig. 1, the transport apparatus of the present embodiment further includes a rear end connector 70. The rear end connector 70 may be connected to the rear end of the inner tube 40. The trailing end of inner tube 40 is the trailing end of the proximal end of inner tube 40. The rear end connector 70 may be communicated with the inside of the inner tube 40, so that the gas inside the inner tube 40 may be evacuated through the rear end connector 70, and the evacuation effect may be achieved by injecting the physiological saline.
An exemplary specific application process is given below:
Step 1: before the operation begins, the engineer will first load the prosthetic valve into the first cavity 21 of the outer tube 20 and the second cavity 31 of the sheath 30.
Step 2: as shown in fig. 3. The operator delivers the sheath 30, the outer tube 20, and a portion of the buffer tube 67 of the delivery device through the femoral artery to the prosthetic valve to be replaced, with the outer tube 20 in the over-the-valve position when the sheath 30 is in the under-the-valve position after the transseptal approach.
And step 3: as shown in fig. 4. At this time, the operator holds the grip sleeve 64 with one hand while rotating the outer tube sleeve 113 with the other hand, and moves the outer tube 20 in a direction away from the sheath 30. Also, in combination with visualization, when a portion of the prosthetic valve in the first cavity 21 of the outer tube 20 is exposed, after the positioning structure of that portion is fully opened, the delivery device is pushed slightly forward to ensure that the positioning structure can be fully secured to the base of the prosthetic valve to be replaced.
And 4, step 4: as shown in fig. 5. After positioning is complete, the operator may continue to move the outer tube 20 in a direction away from the sheath 30 by rotating the outer tube sleeve 113, while viewing in conjunction with visualization, until the portion of the prosthetic valve received in the first cavity 21 of the outer tube 20 is fully released.
And 5: as shown in fig. 6. Finally, the operator may continue to rotate the inner tube drive member 121 to move the inner tube 40 in a direction away from the outer tube 20, while viewing with a contrast, until the portion of the active valve received in the second cavity 31 of the inner tube 40 is completely released.
In summary, the outer tube 20 can move in two stages through the outer tube sleeve 113, so as to release the active valve accommodated in the first cavity 21 of the outer tube 20 in two stages, and the driving member 121 of the inner tube 40 drives the sheath 30 to move, so as to release the active valve accommodated in the second cavity of the inner tube 40. Through the segmented release of the outer tube 20 and the inner tube 40, the process that the active valve is firstly positioned and then released is realized, and the implantation precision is improved.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A prosthetic valve delivery apparatus, comprising:
A handle comprising an outer tube release mechanism and a sheath release mechanism;
The far end of the outer tube is provided with a first cavity, the near end of the outer tube is connected with the outer tube releasing mechanism, and the outer tube releasing mechanism drives the outer tube to move;
a sheath having a second cavity and cooperating with the distal end of the outer tube to receive the prosthetic valve with the first and second cavities;
the inner tube is worn to locate in the outer tube, the distal end of inner tube is connected the sheath pipe, the near-end of inner tube is connected sheath pipe release mechanism, sheath pipe release mechanism transmission the inner tube, and then by the inner tube drives the sheath pipe removes.
2. The conveying apparatus as claimed in claim 1, wherein the handle further comprises a connecting rod, the inner part of the connecting rod is provided with a containing cavity along the axial direction of the connecting rod, and the side wall of the connecting rod is provided with a slot along the axial direction of the connecting rod;
The outer tube releasing mechanism comprises an outer tube driving part and an outer tube fixing part, the outer tube fixing part is arranged in the accommodating cavity and is connected with the outer tube driving part through the open groove, the near end of the outer tube extends into the accommodating cavity and is connected with the outer tube fixing part, and the outer tube driving part drives the outer tube fixing part to move along the open groove;
The sheath tube releasing mechanism comprises an inner tube fixing piece and an inner tube driving piece, the inner tube fixing piece is arranged in the containing cavity and connected with the inner tube driving piece through the groove, the near end of the inner tube extends into the containing cavity and is connected with the inner tube fixing piece, and the inner tube releasing piece drives the inner tube fixing piece to move along the groove.
3. the transport apparatus of claim 2, wherein the threaded engagement is between the outer tube drive member and between the inner tube drive member and the inner tube drive member.
4. the conveying apparatus as claimed in claim 3, wherein the outer tube driving member and the inner tube driving member are sleeved on the outer periphery of the connecting rod, and inner walls of the outer tube driving member and the inner tube driving member are respectively provided with a first spiral groove and a second spiral groove, the outer tube fixing member and the inner tube fixing member are respectively provided with a first guide pillar and a second guide pillar, the first guide pillar and the second guide pillar respectively extend into the first spiral groove and the second spiral groove through the slot, and the outer tube fixing member and the inner tube fixing member are respectively driven to move along the slot by relative rotation of the outer tube driving member and the inner tube driving member around the connecting rod.
5. The conveying apparatus as claimed in claim 2, further comprising a middle tube and a middle tube fixing member, wherein the middle tube fixing member is disposed in the accommodating chamber and fixed to the connecting rod, the middle tube is disposed in the outer tube, the inner tube is disposed in the middle tube, a proximal end of the middle tube is connected to the middle tube fixing member, and the outer tube releasing mechanism and the sheath tube releasing mechanism respectively drive the outer tube and the inner tube to move along the middle tube.
6. The conveying apparatus as claimed in claim 5, wherein the middle pipe fixing member is a three-way fixing member provided with a first passage provided along an axial direction of the connecting rod and a second passage provided perpendicular to the axial direction of the connecting rod and communicating with the first passage, wherein the middle pipe and the inner pipe are provided along the first passage, and the second passage further communicates with an inside of the middle pipe.
7. The delivery apparatus of claim 6, wherein the proximal end of the middle tube terminates upstream of the junction of the first channel and the second channel, the delivery apparatus further comprising a plug and a sealing ring disposed within the first channel downstream of the junction of the first channel and the second channel to seal a gap between the inner tube and the first channel.
8. the conveying apparatus as claimed in claim 5, further comprising a holding sleeve, a fixing sleeve and a tail sleeve, wherein the holding sleeve is sleeved and fixed at one end of the connecting rod close to the sheath tube, the tail sleeve is sleeved and fixed at the other end of the connecting rod far from the sheath tube, the fixing sleeve is sleeved and fixed at the periphery of the connecting rod between the holding sleeve and the tail sleeve and is fixedly connected with the connecting rod and the middle tube fixing member, and the inner tube driving member is limited between the fixing sleeve and the tail sleeve along the axial direction of the connecting rod; the outer tube releasing mechanism further comprises an outer tube sleeve which is sleeved on the periphery of the outer tube transmission part, is fixedly connected with the outer tube transmission part, and is limited between the holding sleeve and the fixing sleeve along the axial direction of the connecting rod.
9. The delivery apparatus of claim 5, further comprising a top ring disposed at the distal end of the middle tube for mounting the prosthetic valve and an adapter connected to the trailing end of the inner tube for evacuating the interior of the inner tube.
10. The delivery apparatus as claimed in claim 1, further comprising a buffer tube and a stress diffusion tube disposed at an end of the connection rod close to the sheath tube, wherein the buffer tube is sleeved on a periphery of the outer tube, the stress diffusion tube is sleeved on a periphery of an end of the buffer tube close to the connection rod and is fixedly connected with the connection rod, and a cross section of the stress diffusion tube perpendicular to an axial direction of the connection rod is gradually increased in a direction close to the connection rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910838515.1A CN110547898A (en) | 2019-09-05 | 2019-09-05 | Artificial valve's conveying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910838515.1A CN110547898A (en) | 2019-09-05 | 2019-09-05 | Artificial valve's conveying equipment |
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| CN110547898A true CN110547898A (en) | 2019-12-10 |
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| CN201910838515.1A Pending CN110547898A (en) | 2019-09-05 | 2019-09-05 | Artificial valve's conveying equipment |
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