CN115120296A - Implant releasing mechanism and conveying device - Google Patents
Implant releasing mechanism and conveying device Download PDFInfo
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- CN115120296A CN115120296A CN202210792758.8A CN202210792758A CN115120296A CN 115120296 A CN115120296 A CN 115120296A CN 202210792758 A CN202210792758 A CN 202210792758A CN 115120296 A CN115120296 A CN 115120296A
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- 239000007943 implant Substances 0.000 title claims abstract description 96
- 230000007246 mechanism Effects 0.000 title claims abstract description 48
- 230000000452 restraining effect Effects 0.000 claims abstract description 14
- 238000001125 extrusion Methods 0.000 claims abstract description 13
- 230000000903 blocking effect Effects 0.000 claims description 30
- 238000003780 insertion Methods 0.000 claims description 20
- 230000037431 insertion Effects 0.000 claims description 20
- 238000000926 separation method Methods 0.000 claims description 8
- 239000013013 elastic material Substances 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 210000004204 blood vessel Anatomy 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 230000017531 blood circulation Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000002513 implantation Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 206010002329 Aneurysm Diseases 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000022211 Arteriovenous Malformations Diseases 0.000 description 1
- 208000009087 False Aneurysm Diseases 0.000 description 1
- 230000005744 arteriovenous malformation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
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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
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
- A61B17/12113—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel within an aneurysm
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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
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
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- Vascular Medicine (AREA)
- Reproductive Health (AREA)
- Engineering & Computer Science (AREA)
- Neurosurgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Animal Behavior & Ethology (AREA)
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Abstract
The invention relates to the technical field of medical instruments, and provides an implant releasing mechanism and a conveying device, wherein the releasing mechanism comprises: a release member; the conveying piece is provided with a conveying cavity with one open end along the axial direction of the conveying piece, and the releasing piece is driven by the driving force and is suitable for conveying along the conveying cavity; a release member having one end adapted to be coupled to the implant and another end adapted to be disposed at the distal end of the delivery member; the releasing piece and the releasing piece are in an inserting state and a separating state, and in the inserting state, the releasing piece is limited at the far end in the conveying cavity by the extrusion force of the releasing piece and the constraint force of the conveying piece; in the separated state, the pressing force and the restraining force are released, and the release member exits from the conveying cavity. The releasing piece is limited in the conveying cavity by the aid of the extrusion force and the constraint force, and the releasing piece is withdrawn from the conveying cavity after the extrusion force and the constraint force are relieved, so that the effect that the releasing piece releases the implant through the releasing piece is achieved, and mistaken release and early release are avoided.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an implant releasing mechanism and a conveying device.
Background
The use of interventional catheter systems for positioning and deploying an implant device in a body vessel and corresponding coordination has become a standard procedure for treating intravascular conditions, and such placement of an implant device procedure is particularly useful in treating areas where conventional surgical procedures are not possible or would pose significant risks to the patient (e.g., in treating aneurysms, arteriovenous malformations, pseudoaneurysms).
The treatment of diseases such as aneurysms is very difficult due to the drawbacks of conventional surgical procedures and the long recovery periods for patients with the associated high risk of complications. Advances in the delivery and deployment technology of implant devices provide an alternative treatment for such conditions. These procedures include inserting a delivery catheter fitted with an implantation device into a patient's blood vessel and guiding deployment at the lesion, then passing the delivery system with the implantation device secured through the delivery catheter to the treatment site, and then releasing the implantation device from the delivery system.
The technical scheme that the implant is sleeved on the release part through the connecting piece is adopted in the implanting instrument in the prior art, the release mechanism is inserted into a blood vessel, and in the process of releasing the implant, because blood flow in the blood vessel continuously flows, the blood flow speed can impact the implant, so that the implant can move relative to the release part, for example, the displacement can be generated towards the near end of an operator, and then when the implant is released, the operator can make wrong judgment on the specific position of the implant, and further wrong release of the implant is caused.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that in the process of inserting the release mechanism into a blood vessel and releasing the implant, the blood flow in the blood vessel continuously flows and the blood flow speed impacts the implant to cause the implant to move relative to the release member, for example, the implant can move towards the near end of an operator, so that the operator can make an incorrect judgment on the specific position of the implant when releasing the implant, and the implant is released incorrectly, by adopting the technical scheme that the implant is sleeved on the release member through the connecting member in the implantation instrument in the prior art, thereby providing the implant release mechanism and the conveying device with the same.
An implant release mechanism comprising: a release member; the conveying piece is provided with a conveying cavity with one open end along the axial direction and is driven by a driving force, and the releasing piece is suitable for conveying along the conveying cavity; a release member having one end adapted to be coupled to the implant and another end adapted to be disposed at a distal end of the delivery member; the release piece and the release piece are in a plug-in state and a separation state, and in the plug-in state, the release piece is limited at the far end in the conveying cavity by the extrusion force of the release piece and the constraint force of the conveying piece; in the separated state, the extrusion force and the constraint force are relieved, the releasing piece is restored to the size of the shape before being constrained, and the releasing piece is suitable for exiting the conveying cavity.
Optionally, in the above-mentioned implant releasing mechanism, the distal end of the delivery cavity is provided with a restriction opening, and the inner diameter of the restriction opening is adapted to fit with the outer diameter of the release member;
the releasing piece is suitable for being provided with an inserting cavity with at least one open end, the releasing piece is suitable for expanding the inserting cavity and extending into the inserting cavity along the opening so as to enable the releasing piece and the releasing piece to be matched with the inserting state, in the inserting state, the outer wall surface of the releasing piece is suitable for being abutted against the inner wall surface of the restraining port, and the restraining port exerts restraining force on the releasing piece.
Optionally, in the above-mentioned implant releasing mechanism, a junction of the delivery lumen and the constraining opening is configured to be in a shape of a closed mouth, and an inner diameter of the junction is gradually reduced from the delivery lumen toward the constraining opening.
Optionally, in the above implant release mechanism, the proximal end of the insertion cavity is an expansion port, and the outer diameter of the release element is at least larger than the inner diameter of the expansion port, so as to apply a squeezing force to the expansion port for expansion.
Optionally, in the above-mentioned implant releasing mechanism, a socket may be further provided at a distal end of the socket cavity, an extension cavity is provided at a distal end of the socket and the release member, an inner diameter of the extension cavity is larger than an inner diameter of the expansion port, and the release member is adapted to penetrate through the socket cavity and the extension cavity along the expansion port.
Optionally, in the above-mentioned implant release mechanism, a blocking member is further included, which is located in the delivery cavity, the blocking member and the constraining port are adapted to form a release cavity, the release cavity is located in the delivery path of the delivery member, and a through hole is provided in the blocking member, a longitudinal cross-sectional area of the through hole is smaller than a longitudinal cross-sectional area of the expanding port of the release member when the expanding port is adapted to expand, and during the process of switching the release member and the release member in the plugging state to the separation state, the blocking member is adapted to provide a blocking force to the release member, so as to prevent the release member from moving proximally along the delivery cavity.
Optionally, in the above-mentioned implant release mechanism, a longitudinal cross-sectional area of the constraining port is smaller than a cross-sectional area of the implant, so that the delivery member applies an auxiliary blocking force to the release member by applying a blocking force to the implant, adapted to assist in blocking proximal movement of the release member along the delivery lumen.
Optionally, in the above-mentioned implant releasing mechanism, an elastic member is disposed at a distal end of the delivery member in an axial direction of the delivery member, the elastic member is located in the delivery cavity, and one end of the elastic member is adapted to be close to the release member, and one end of the release member is adapted to penetrate through the elastic member and be inserted into the insertion cavity of the release member.
Optionally, in the above-mentioned implant release mechanism, a break-off portion is provided at a proximal end of the delivery member, and a breaking force is applied to the break-off portion to divide the delivery member into two at the break-off portion, so that one end of the release member is exposed from the delivery cavity.
Optionally, in the above-mentioned implant releasing mechanism, the releasing member is made of an elastic material, and a portion of the implant is adapted to be wound around the releasing member.
A delivery device, comprising: the conveying pipe is provided with a containing cavity with two opened ends; an implant release mechanism, the implant release mechanism being as described above, wherein the implant is switchable from a collapsed state in which the implant is collapsed in the receiving chamber to a released state in which the release member is released from the delivery lumen when the release member is pulled along the delivery lumen of the delivery member towards the proximal end of the delivery member.
The technical scheme of the invention has the following advantages:
1. the invention provides an implant release mechanism, comprising: a release member; the conveying piece is provided with a conveying cavity with one open end along the axial direction and is driven by a driving force, and the releasing piece is suitable for conveying along the conveying cavity; a release member having one end adapted to be coupled to the implant and another end adapted to be disposed at a distal end of the delivery member; the release piece and the release piece are in a plug-in state and a separation state, and in the plug-in state, the release piece is limited at the far end in the conveying cavity by the extrusion force of the release piece and the constraint force of the conveying piece; in the separated state, the pressing force and the restraining force are released, and the release member is adapted to exit the conveying chamber.
In the implant releasing mechanism with the structure, the releasing piece is arranged at the far end in the conveying cavity, one end of the releasing piece is connected with the implant, the other end of the releasing piece is suitable for being arranged at the far end of the conveying piece, the releasing piece and the releasing piece have an inserting state and a separating state, the releasing piece can be subjected to extrusion force and restraining force in the inserting state, the releasing piece is restrained and limited in the conveying cavity, in the separating state, the extrusion force and the restraining force which are applied to the releasing piece are relieved, the releasing piece is enabled to recover the state before being restrained and can freely exit from the conveying cavity, the effect that the releasing piece releases the implant through the releasing piece is achieved, in the conveying process, the position of the releasing piece cannot be subjected to displacement change relative to the releasing piece due to the fact that the releasing piece is arranged in the conveying cavity, or the generated displacement distance is small, and meanwhile, the impact force of blood flow, which is applied to the implant in a blood vessel, can be balanced by the restraining force and the component force in the horizontal direction, the release mechanism has small overall volume, can be inserted into a thin blood vessel, has wide application range, overcomes the technical scheme that the implant is sleeved on the release member by the connecting piece in the implantation instrument in the prior art, the release mechanism is inserted into the blood vessel and releases the implant in the process of releasing the implant, the blood flow speed of the blood vessel continuously flows to impact the implant, so that the implant can move relative to the release member, for example, can move towards the near end of an operator, further, when the implant is released, the operator may make a wrong judgment on the specific position of the implant, and further the defect of the wrong release of the implant is caused
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic cross-sectional view of a release mechanism provided in a first embodiment of the present invention;
FIG. 2 is a front plan view of a schematic of the structure of the break-off portion on the transport member of the release mechanism;
FIG. 3 is a schematic cross-sectional view of a modified release mechanism according to a first embodiment;
FIG. 4 is a cross-sectional view of a schematic of the structure of the break-off portion on the transport member of the deformed release mechanism;
FIG. 5 is a schematic structural view of the release member in a state prior to insertion of the release member into the release member;
FIG. 6 is a schematic view of the expanded release member after insertion of the release member;
FIG. 7 is a schematic diagram of the position structure of the extension cavity and the plug cavity;
FIG. 8 is a schematic view of the expanded configuration of the expandable opening of the release member;
FIG. 9 is a schematic diagram of a position structure of a release cavity formed by the blocking member and the restriction opening in FIG. 1;
FIG. 10 is a schematic diagram illustrating a position structure of a release cavity formed by the blocking member and the restriction opening in FIG. 3;
FIG. 11 is a schematic view of the position structure of the elastic member and the conveying member;
FIG. 12 is a schematic view of the connection of the implant to the release member and release member;
FIG. 13 is a schematic view of the second embodiment with the implant received within the delivery tube;
description of reference numerals:
1. a release member;
2. a conveying member; 201. a conveying cavity; 202. a restriction opening; 203. a junction;
3. a delivery pipe;
4. releasing the piece; 401. a plug cavity; 402. expanding the mouth; 403. an interface; 404. an extension cavity;
5. a blocking member; 501. a disengagement cavity; 502. a through hole;
6. an elastic member; 7. a breaking part; 8. an implant.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The far end and the near end in the invention are both relative to the operation end of an operator, wherein the end close to the operation end of the operator is the near end, and the end far away from the operation end of the operator is the far end.
Example 1
The present embodiment describes an implant release mechanism, referring to fig. 1-13, the release mechanism comprises a delivery member 1 and a release member 4, wherein a delivery cavity 201 with an opening at one end is opened along the axial direction of the delivery member 2, the release member 1 is driven by a driving force and is suitable for being delivered along the delivery cavity 201, one end of the release member 4 is suitable for being connected with an implant, and the other end is suitable for being arranged at the distal end of the delivery member 2.
The release member 4 and the release member 1 have an insertion state in which the release member 4 can receive the pressing force of the release member 1 and the restraining force of the carrying member 2, and the release member 4 is restrained at the distal end in the carrying chamber 201, and a separation state in which the pressing force and the restraining force received by the release member 4 are released and the release member 4 is adapted to exit the carrying chamber 201.
The releasing member 1 is arranged at the far end in the conveying cavity 201, one end of the releasing member 4 is connected with the implant, the other end of the releasing member 1 is suitable for being arranged at the far end of the conveying member 2, the releasing member 1 and the releasing member 4 have a plugging state and a separating state, the releasing member 4 can be subjected to extrusion force and restraining force in the plugging state, so that the releasing member 4 is restrained in the conveying cavity 201, and in the separating state, the extrusion force and the restraining force applied to the releasing member 4 are relieved, so that the releasing member 4 restores the state before being restrained and can freely exit from the conveying cavity 201, the effect that the releasing member 1 releases the implant through the releasing member 4 is realized, the releasing member 4 cannot be subjected to displacement change relative to the releasing member 1 or has small displacement distance because of being restrained in the conveying cavity 201 during the conveying process, and the impact force of blood flow component applied to the implant 8 in blood vessels can be balanced in the horizontal direction by the restraining force and the extrusion force, make release 4 atress on the horizontal direction still be in and be close balanced state, and then release 4 can carry out stable being connected with transport 2, when needs release the implant, the impact force of blood flow to the implant can not influence its position change, consequently operating personnel can carry out accurate judgement to the position of implant, the realization is avoided the effect of mistake release and release in advance, and the whole volume of this release mechanism is less, can intervene in thinner blood vessel, application scope is wide, whole process operation is stable.
Specifically, the distal end of the delivery cavity 201 is provided with a restriction port 202, the inner diameter of the restriction port 202 is adapted to be adapted to the outer diameter of the release member 4, the release member 4 is adapted to be provided with an insertion cavity 401 having at least one end opened, and the release member 1 is adapted to be inserted into the insertion cavity and extend into the insertion cavity 401 along the opening, so that the release member 1 and the release member 4 are adapted to be in an insertion state in which the outer wall surface of the release member 4 can abut against the inner wall surface of the restriction port 202, and the restriction port 202 applies a restriction force to the release member 4, thereby achieving an effect that the release member 4 can be restricted at the distal end inside the delivery cavity 201.
In this embodiment, the intersection 203 of the delivery cavity 201 and the restriction opening 202 may be set to be a closed shape, and the inner diameter of the intersection 203 gradually decreases from the delivery cavity 201 to the restriction opening 202.
The proximal end of the plug cavity 401 in this embodiment is an expansion port 402, the outer diameter of the release element 1 is at least larger than the inner diameter of the expansion port 402, so as to apply extrusion force to the expansion port 402 for expansion, the outer diameter of the release element 1 is set larger than the inner diameter of the expansion port 402, and when the release element 1 extends into the plug cavity 401 along the expansion port 402 of the plug cavity 401, the release element 4 at the expansion port 402 can be expanded because the outer diameter of the release element 1 is larger than the inner diameter of the expansion port 402, so as to increase the inner diameter of the expansion port 402.
As a deformable embodiment, in the implant release mechanism in this embodiment, a socket 403 may be further formed at a distal end of the insertion cavity 401, an extension cavity 404 is formed between the socket 403 and a distal end of the release member 4, an inner diameter of the extension cavity 404 is set to be larger than an inner diameter of the expansion port 402, the release member 1 is adapted to penetrate the insertion cavity 401 along the expansion port 402 and extend into the extension cavity 404 along the socket 403, the arrangement of the extension cavity 404 can increase a contact area between the release member 1 and the release member 4, and the connection and delivery between the release member 4 and the release member 1 are more stable during the delivery process.
In order to avoid that the release element 4 cannot be separated from the release element 1 smoothly when the release element 1 is pulled out of the insertion cavity 401, a blocking element 5 can be arranged in the transport cavity 201, the blocking member 5 and the restriction opening 202 are adapted to form a disengagement chamber 501, the disengagement chamber 501 being located on the transport path of the transport member 2, and a through hole 502 being provided on the blocking member, the longitudinal cross-sectional area of the through hole 502 is smaller than the longitudinal cross-sectional area of the expansion port 402 of the release member 4 when expanded, in the process that the release member 1 and the release member 4 are switched to the separation state in the insertion state, the release member 4 is blocked at one end of the through hole 502, the blocking member 5 can provide a blocking force to the releasing member 4, so as to prevent the releasing member 4 from moving to the proximal end of the delivery cavity 201 along the through hole 502, and the releasing member 1 can be smoothly pulled, so that the releasing member 4 and the releasing member 1 can be smoothly separated.
In specific application, the blocking member 5 and the conveying member 2 can be integrally formed, the inner diameter of the through hole of the blocking member 5 is the same as that of the conveying cavity of the conveying member 2, and the inner diameter of the releasing cavity 501 is larger than that of the through hole 502.
In the implant release mechanism of this embodiment, in order to further enhance the effect of smoothly separating the release element 1 from the release element 4, the longitudinal cross-sectional area of the constraining opening 202 may be set smaller than the cross-sectional area of the implant, so that the delivery element 2 can apply an auxiliary blocking force to the release element 4 by applying a blocking force to the implant, and can further assist in blocking the proximal movement of the release element 4 along the delivery lumen 201.
In this embodiment, the elastic member 6 is disposed at the distal end of the conveying member 2 along the axial direction thereof, the elastic member 6 is located in the conveying cavity 201, and one end of the elastic member 6 is adapted to be close to the releasing member 4, one end of the releasing member 1 is adapted to pass through the elastic member 6 and be inserted into the insertion cavity 401 of the releasing member 4, the elastic member 6 may be a spring, and the elastic member 6 is disposed so that the conveying member 2 can be bent to some extent when encountering a curved blood vessel, thereby smoothly conveying the whole structure.
In this embodiment, in order to expose one end of the release element 1 from the conveying cavity 201 and facilitate the separation of the release element 1 from the release element 4, the distal end of the conveying element 2 may be provided with a breaking portion 7, and an operator applies a breaking force to the breaking portion 7 to divide the conveying element 2 into two parts at the breaking portion 7, so as to achieve the effect of exposing one end of the release element 1 from the conveying cavity 201 and facilitate the separation of the release element 1 from the release element 4, specifically, the breaking portion may be formed by providing a groove on the outer circumferential surface of the conveying tube 3 to form a break.
The releasing member 4 in this embodiment may be made of an elastic material, and a portion of the implant is adapted to be wound around the releasing member 4, specifically, the releasing member 4 may be made of an elastic body such as rubber, nitinol, PU, or the like.
Example 2:
in this embodiment, a delivery device is described, and referring to fig. 1-13, the delivery device includes a delivery tube 3 and an implant release mechanism, wherein the delivery tube 3 has a receiving cavity with two open ends, the implant release mechanism is the implant release mechanism described in embodiment 1, and when the release member 1 of the implant release mechanism is pulled along the delivery cavity 201 of the delivery member 2 toward the proximal end of the delivery member 2, the implant can be switched from a furled state in the receiving cavity to a release state after the release member 4 is released from the delivery cavity 201.
The delivery device can prevent the implant from being released into the blood vessel by mistake, and the implant in the embodiment can be a spring ring in specific application.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.
Claims (11)
1. An implant release mechanism, comprising:
a release member (1);
the conveying piece (2) is provided with a conveying cavity (201) with one open end along the axial direction and is driven by a driving force, and the releasing piece (1) is suitable for conveying along the conveying cavity (201);
a release member (4) having one end adapted to be connected to the implant and the other end adapted to be arranged at the distal end of the delivery member (2);
the release piece (4) and the release piece (1) have a plug-in state and a separation state, in the plug-in state, the release piece (4) is limited at the far end in the conveying cavity (201) by the extrusion force of the release piece (1) and the constraint force of the conveying piece (2); in the detached condition, the pressing force and the restraining force are relieved, the release member (4) being adapted to exit the delivery chamber (201).
2. The implant release mechanism according to claim 1, characterized in that the distal end of the delivery lumen (201) is provided with a restriction opening (202), the inner diameter of the restriction opening (202) being adapted to fit the outer diameter of the release member (4);
the release piece (4) is provided with an insertion cavity (401) with at least one open end, the release piece (1) is suitable for expanding the insertion cavity and extends into the insertion cavity (401) along the opening so that the release piece (1) and the release piece (4) are adapted to the insertion state, the outer wall surface of the release piece (4) is suitable for abutting against the inner wall surface of the restriction opening (202) in the insertion state, and the restriction opening (202) applies a restriction force to the release piece (4).
3. The implant release mechanism according to claim 2, characterized in that an intersection (203) of the delivery lumen (201) and the restriction opening (202) is provided in a closed mouth shape, an inner diameter of the intersection (203) gradually decreasing from the delivery lumen (201) towards the restriction opening (202).
4. The implant release mechanism of claim 3 wherein the proximal end of the plug lumen (401) is an expansion port (402), the outer diameter of the release member (1) being at least larger than the inner diameter of the expansion port (402) to apply a compressive force to the expansion port (402) to expand.
5. The implant release mechanism according to claim 4, wherein a socket (403) is further provided at a distal end of the socket cavity (401), an extension cavity (404) is provided at a distal end of the socket (403) and the release member (4), an inner diameter of the extension cavity (404) is larger than an inner diameter at the expanded port (402), and the release member (1) is adapted to penetrate the socket cavity (401) and the extension cavity (404) along the expanded port (402).
6. The implant release mechanism according to claim 5, further comprising a blocking member (5) located within the delivery lumen (201), wherein the blocking member (5) and the restriction opening (202) are adapted to form a release lumen (501), wherein the release lumen (501) is located in the delivery path of the delivery member (2), and wherein a through hole (502) is provided in the blocking member, wherein the through hole (502) has a longitudinal cross-sectional area smaller than a longitudinal cross-sectional area of the expandable opening (402) of the release member (4) when the expandable opening is adapted to expand, wherein the blocking member (5) is adapted to provide a blocking force to the release member (4) during the switching of the release member (1) and the release member (4) in the plugged state to the disconnected state, and wherein the blocking member (4) is prevented from moving proximally along the delivery lumen (201).
7. The implant release mechanism according to claim 6, wherein the longitudinal cross-sectional area of the restriction opening (202) is smaller than the cross-sectional area of the implant (8) such that the delivery member (2) applies a secondary blocking force to the release member (4) by applying a blocking force to the implant (8) adapted to assist in blocking proximal movement of the release member (4) along the delivery lumen (201).
8. The implant release mechanism according to any of claims 1 to 7, characterized in that an elastic member (6) is provided at its distal end in the axial direction of the delivery member (2), said elastic member (6) being located within the delivery lumen (201) and having one end adapted to be close to the release member (4), and one end of the release member (1) being adapted to pass through the elastic member (6) and to be inserted into the insertion lumen (401) of the release member (4).
9. The implant release mechanism according to claim 8, wherein a break (7) is provided at the proximal end of the delivery member (2), and a breaking force is applied to the break (7) to bisect the delivery member (2) at the break (7) to expose one end of the release member (1) from within the delivery lumen (201).
10. The implant release mechanism according to any of the claims 1-9, wherein the release member (4) is made of an elastic material, and wherein a part of the implant is adapted to be wound around the release member (4).
11. A conveyor apparatus, comprising:
a conveying pipe (3) which is provided with a containing cavity with two opened ends;
an implant release mechanism according to any one of claims 1 to 10, wherein the implant (8) is switchable from a collapsed state in which it is collapsed in the receiving chamber to a released state in which the release member (4) is released from the delivery lumen (201) when the release member (1) is pulled along the delivery lumen (201) of the delivery member (2) towards the proximal end of the delivery member (2).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210792758.8A CN115120296A (en) | 2022-07-05 | 2022-07-05 | Implant releasing mechanism and conveying device |
| PCT/CN2022/124789 WO2024007467A1 (en) | 2022-07-05 | 2022-10-12 | Implant release mechanism and delivery apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210792758.8A CN115120296A (en) | 2022-07-05 | 2022-07-05 | Implant releasing mechanism and conveying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115120296A true CN115120296A (en) | 2022-09-30 |
Family
ID=83381895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210792758.8A Pending CN115120296A (en) | 2022-07-05 | 2022-07-05 | Implant releasing mechanism and conveying device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115120296A (en) |
| WO (1) | WO2024007467A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007467A1 (en) * | 2022-07-05 | 2024-01-11 | 苏州美创医疗科技有限公司 | Implant release mechanism and delivery apparatus |
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| US20060116714A1 (en) * | 2004-11-26 | 2006-06-01 | Ivan Sepetka | Coupling and release devices and methods for their assembly and use |
| US20130218138A1 (en) * | 2012-02-16 | 2013-08-22 | Biotronik Ag | Release device for releasing a medical implant from a catheter and catheter having a release device and method for clamping an implant therein |
| CN108210133A (en) * | 2016-12-16 | 2018-06-29 | 先健科技(深圳)有限公司 | Implant |
| US20200229957A1 (en) * | 2016-07-29 | 2020-07-23 | Wallaby Medical, Inc. | Implant delivery systems and methods |
| CN216294171U (en) * | 2021-09-29 | 2022-04-15 | 上海励楷科技有限公司 | Release mechanism and intracranial aneurysm treatment instrument with same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8876854B2 (en) * | 2008-04-03 | 2014-11-04 | Cook Medical Technologies Llc | Implant release mechanism |
| CN110123406B (en) * | 2018-02-02 | 2024-05-17 | 微创神通医疗科技（上海）有限公司 | Implant delivery device |
| CN208910365U (en) * | 2018-02-02 | 2019-05-31 | 微创神通医疗科技（上海）有限公司 | The conveying device of implantation material |
| US11123077B2 (en) * | 2018-09-25 | 2021-09-21 | DePuy Synthes Products, Inc. | Intrasaccular device positioning and deployment system |
| CN115120296A (en) * | 2022-07-05 | 2022-09-30 | 苏州美创医疗科技有限公司 | Implant releasing mechanism and conveying device |
-
2022
- 2022-07-05 CN CN202210792758.8A patent/CN115120296A/en active Pending
- 2022-10-12 WO PCT/CN2022/124789 patent/WO2024007467A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060116714A1 (en) * | 2004-11-26 | 2006-06-01 | Ivan Sepetka | Coupling and release devices and methods for their assembly and use |
| US20130218138A1 (en) * | 2012-02-16 | 2013-08-22 | Biotronik Ag | Release device for releasing a medical implant from a catheter and catheter having a release device and method for clamping an implant therein |
| US20200229957A1 (en) * | 2016-07-29 | 2020-07-23 | Wallaby Medical, Inc. | Implant delivery systems and methods |
| CN108210133A (en) * | 2016-12-16 | 2018-06-29 | 先健科技(深圳)有限公司 | Implant |
| CN216294171U (en) * | 2021-09-29 | 2022-04-15 | 上海励楷科技有限公司 | Release mechanism and intracranial aneurysm treatment instrument with same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007467A1 (en) * | 2022-07-05 | 2024-01-11 | 苏州美创医疗科技有限公司 | Implant release mechanism and delivery apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024007467A1 (en) | 2024-01-11 |
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