CN115607218A - Mechanical releasing device for intratumoral implant - Google Patents
Mechanical releasing device for intratumoral implant Download PDFInfo
- Publication number
- CN115607218A CN115607218A CN202211193019.3A CN202211193019A CN115607218A CN 115607218 A CN115607218 A CN 115607218A CN 202211193019 A CN202211193019 A CN 202211193019A CN 115607218 A CN115607218 A CN 115607218A
- Authority
- CN
- China
- Prior art keywords
- inner core
- core wire
- implant
- intra
- intratumoral
- Prior art date
- 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.)
- Granted
Links
- 239000007943 implant Substances 0.000 title claims abstract description 137
- 230000002601 intratumoral effect Effects 0.000 title claims abstract description 66
- 206010028980 Neoplasm Diseases 0.000 claims description 62
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 5
- 230000000717 retained effect Effects 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000004308 accommodation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 12
- 238000003466 welding Methods 0.000 description 9
- 230000036285 pathological change Effects 0.000 description 8
- 231100000915 pathological change Toxicity 0.000 description 8
- 239000008358 core component Substances 0.000 description 5
- 201000008450 Intracranial aneurysm Diseases 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 4
- 230000003902 lesion Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010002329 Aneurysm Diseases 0.000 description 1
- 208000005189 Embolism Diseases 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000002008 hemorrhagic effect Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides a mechanical release device for an intratumoral implant, comprising: the conveying rod is of a hollow structure, and an accommodating cavity is formed inside the conveying rod; the annular connecting piece is arranged at the distal end of the conveying rod and is connected with the intratumoral implant; the core piece is movably arranged in the accommodating cavity, and the far end of the core piece is limited by the annular connecting piece so as to limit the intratumoral implant at the far end of the conveying rod; moving the core member may release the spacing of the core member and the annular connector to release the intratumoral implant. The release device for the intratumoral implant has the advantages of rapid release process, simple, stable and reliable release operation, difficult occurrence of false release due to the release of the spacing between the core piece and the annular connecting piece, mechanical release mode, no release product and less surgical risk.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a mechanical releasing device for intratumoral implants.
Background
Intracranial aneurysm is the most main disease of hemorrhagic cerebrovascular disease, the prevalence rate of the intracranial aneurysm in China is 2.5% -3.0%, if the intracranial aneurysm breaks and bleeds, easily cause disability, even cause death, carry out intratumoral embolism through endovascular intervention operation is the main treatment mode for treating the intracranial aneurysm. In clinical surgery, the intratumoral implant is generally delivered into an aneurysm through a delivery guidewire, and then the delivery guidewire is detached from the intratumoral implant through a detachment assembly, and the delivery guidewire is withdrawn, thereby achieving implantation of the intratumoral implant.
At present, in the market, the release modes of intratumoral implants and delivery guide wires are divided into hydrolysis, electrolysis and mechanical release, wherein the hydrolysis is realized by injecting a solvent into a delivery system for dissolution so as to separate the implants, and the release is unstable and is less used clinically; the electrolysis is realized by introducing electrodes and wires, and electrifying the wires to enable the electrochemical reaction to occur at the connecting part between the implant and the delivery system so as to realize the disconnection of the connecting part, so that the implant is separated from the delivery system, but the delivery system and the implant are generally welded or welded together, the welding part is difficult to treat uniformly, the electrochemical reaction time is unstable, and the disconnection time is different from 30 seconds to several minutes; the mechanical release is realized by connecting and separating the implant and the delivery system in a mechanical connection mode, the mechanical connection mode comprises a clamping type mode and a clamping type mode, and the methods can solve the problems that the release assembly cannot be released and is unstable, so that potential risks are brought to the operation.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide a mechanical releasing device for an intra-tumor implant, which solves the problems of the existing releasing mode and can realize quick releasing, stable releasing and reliable releasing.
In order to achieve the above purpose, the invention provides the following technical scheme:
a mechanical release device for an intra-tumor implant, the mechanical release device for an intra-tumor implant comprising: the conveying rod is of a hollow structure, and an accommodating cavity is formed inside the conveying rod;
an annular connector disposed at the distal end of the delivery rod and connected to an intratumoral implant;
a core member movably disposed within the receiving lumen, a distal end of the core member being retained with the annular connector to retain an intra-tumoral implant at the distal end of the delivery rod;
moving the inner core member may release a stop of the inner core member with the annular connector to release the intratumoral implant.
Optionally, one side of the distal end of the delivery rod is provided with a notch communicated with the accommodating cavity, the annular connecting piece has two opposite ends, one end of the annular connecting piece is fixed to the side, which is not provided with the notch, of the distal end of the delivery rod, the other end of the annular connecting piece penetrates through a mesh hole of the intratumoral implant and extends into the notch, and the annular connecting piece forms a C-shaped structure after being fixed;
the core piece is an inner core wire, the proximal end of the inner core wire is fixedly connected with the proximal end of the conveying rod, and the distal end of the inner core wire sequentially penetrates through and is limited in the annular inner part of the annular connecting piece and the tumor implant so as to limit the tumor implant at the distal end of the conveying rod;
the inner core wire can be pulled and moved by breaking the proximal end of the conveying rod, and the limit of the inner core wire and the annular connecting piece can be released, so that the intratumoral implant can be released.
Optionally, the distal end of the delivery rod is sleeved with a spring, and one end of the annular connecting piece is fixed between the delivery rod and the spring.
Optionally, the number of the annular connecting pieces is multiple, the annular connecting pieces are distributed at intervals along the circumferential direction of the conveying rod, each annular connecting piece is provided with two opposite ends, one end of each annular connecting piece is fixed at the distal end of the conveying rod, and the other end of each annular connecting piece is arranged in a mesh of the intratumoral implant;
the core element is an inner core wire, the proximal end of the inner core wire is fixedly connected with the proximal end of the conveying rod, and the distal end of the inner core wire sequentially penetrates through and is limited in the interior of the intra-tumor implant and the rings of the plurality of ring-shaped connecting pieces so as to limit the intra-tumor implant at the distal end of the conveying rod;
breaking the proximal end of the delivery rod may draw the inner core wire and may release the retention of the inner core wire with the plurality of loop connectors to release the intratumoral implant.
Optionally, a spring is sleeved on the distal end of the conveying rod, and one end of each of the annular connecting pieces is fixed between the conveying rod and the spring.
Optionally, the proximal end of the delivery rod is provided with an incision communicated with the accommodating cavity, and the annular connecting piece is positioned inside the distal end of the delivery rod and fixed at the proximal end of the intratumoral implant;
the core piece is an inner core wire, the proximal end of the inner core wire is fixedly connected with the proximal end of the conveying rod, and the distal end of the inner core wire passes through the ring of the ring-shaped connecting piece and extends out of the incision so as to limit the intratumoral implant at the distal end of the conveying rod;
and breaking the proximal end of the conveying rod, pulling the inner core wire extending out of the incision or pulling the proximal end of the inner core wire, so that the inner core wire is drawn out of the ring-shaped connecting piece, and releasing the limit of the inner core wire and the ring-shaped connecting piece to release the intratumoral implant.
Optionally, the annular connector is located inside the distal end of the delivery rod and is fixed proximal to an intratumoral implant;
the inner core piece comprises an inner lining tube and an inner core wire arranged in the inner lining tube, the far end of the inner core wire is exposed out of the far end of the inner lining tube and is shaped into a configuration structure, and the configuration structure is limited in the ring shape of the ring-shaped connecting piece so as to limit the intratumoral implant at the far end of the conveying rod;
and moving the inner lining pipe or the inner core wire to enable the structural structure of the inner core wire to be recovered into the inner lining pipe, and releasing the limit of the inner core wire and the annular connecting piece so as to release the intratumoral implant.
Optionally, the number of the inner core wires is multiple, the multiple inner core wires are all arranged in the lining tube, the far ends of the multiple inner core wires are all exposed out of the far end of the lining tube, and the exposed end of each inner core wire is shaped into a structural structure and is limited in the ring shape of the annular connecting piece.
Optionally, the proximal end of the inner core wire is fixedly connected to the proximal end of the conveying rod, the proximal end of the conveying rod is provided with a through hole communicated with the accommodating cavity, the through hole extends along the length direction of the conveying rod, the proximal end of the lining tube is provided with a sliding part, the mechanical release device for intratumoral implants further comprises a handle, a connecting part is convexly arranged on one side of the handle, the connecting part passes through the through hole and is connected to the sliding part, and the handle can drive the inner core wire to move inside the conveying rod;
or the near end of the inner core wire is exposed out of the near end of the lining tube, the lining tube is fixedly connected to the inner wall of the conveying rod through a fixing piece, the near end of the inner core wire is connected to the near end of the conveying rod, and the inner core wire can be pulled and moved by breaking the near end of the conveying rod.
Optionally, the material of the inner core wire is a shape memory alloy.
Has the advantages that:
the invention relates to a release device for intra-tumor implants, which comprises a conveying rod, an annular connecting piece and an inner core piece, wherein the conveying rod is of a hollow structure, an accommodating cavity is formed in the conveying rod, the annular connecting piece is arranged at the far end of the conveying rod and connected to one end of the intra-tumor implant, the inner core piece is movably arranged in the accommodating cavity, and the far end of the inner core piece is limited by the annular connecting piece so as to limit the intra-tumor implant at the far end of the conveying rod; after the intra-tumor implant is conveyed to a lesion part, the inner core component is moved to release the limit of the inner core component and the annular connecting component, so that the implant of the intra-tumor implant is separated from the conveying rod, and the implant is released. The release device for the intratumoral implant has the advantages of rapid release process, simple, stable and reliable release operation, difficult occurrence of false release due to the release of the spacing between the core piece and the annular connecting piece, mechanical release mode, no release product and less surgical risk.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:
fig. 1 is a schematic view of a first embodiment of a release device for an intratumoral implant in accordance with the present invention;
fig. 2 is a schematic structural view of a release device for an intra-tumor implant according to a first embodiment of the present invention after the release device and the intra-tumor implant are positioned;
fig. 3 is a schematic view of a first embodiment of the present invention, showing an implant in a tumor being detached;
fig. 4 is a schematic view of a second embodiment of a release device for an intra-tumoral implant in accordance with the present invention in a position-locked position with respect to the intra-tumoral implant;
fig. 5 is a schematic view of a release device for an intra-tumor implant according to a third embodiment of the present invention, in a position-locked position with the intra-tumor implant;
fig. 6 is a schematic view showing a release device for an intra-tumor implant according to a fourth embodiment of the present invention, after the release device and the intra-tumor implant are positioned;
fig. 7 is a schematic view showing a fourth embodiment of the present invention after release of an intratumoral implant.
Reference numbers in the figures: 1-a conveying rod; 11-incision; 2-a spring; 3-a ring-shaped connector; 4-inner core wire; 5-lining the tube; 6-intratumoral implant.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
The present invention will be described in detail with reference to examples. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Aiming at the problems existing in the existing release mode, the invention provides a mechanical release device for the intra-tumor implant, the release process of the release device for the intra-tumor implant is rapid, the release operation is simple, stable and reliable, the release is realized by releasing the limit of the inner core piece and the annular connecting piece 3, the false release is not easy to occur, meanwhile, the release mode is mechanical release, no release product exists, and the operation risk is small.
The invention relates to a releasing device for intra-tumor implants, which comprises a conveying rod 1, an annular connecting piece 3 and an inner core piece, wherein the conveying rod 1 is of a hollow structure, an accommodating cavity is formed in the conveying rod 1, the annular connecting piece 3 is arranged at the far end of the conveying rod 1 and is connected to one end of an intra-tumor implant 6, the inner core piece is movably arranged in the accommodating cavity, and the far end of the inner core piece is limited by the annular connecting piece 3 so as to limit the intra-tumor implant 6 at the far end of the conveying rod 1; after the intratumoral implant is delivered to a lesion part, the inner core component is moved to release the limit between the inner core component and the annular connecting component 3, so that the intratumoral implant 6 is separated from the delivery rod 1, and the intratumoral implant 6 is released.
It should be noted that the distal end is the end away from the operator, and the proximal end is the end close to the operator. The connection between the annular connector 3 and the intra-tumor implant 6 may be a fixed connection, such as gluing, welding, etc., or a detachable connection, such as plugging, clipping, etc. The annular connecting piece 3 is arranged at the far end of the conveying rod 1, the annular connecting piece 3 can be arranged inside the far end of the conveying rod 1 or outside the far end of the conveying rod 1, and the specific arrangement position is not limited and is within the protection scope of the invention.
As shown in fig. 1 to 3, in the first embodiment of the present invention, one side of the distal end of the conveying rod 1 is provided with a notch 11 communicating with the accommodating cavity, the annular connecting member 3 has two opposite ends, one end of the annular connecting member 3 is fixed to the side of the distal end of the conveying rod 1 where the notch 11 is not provided, and the fixed connection manner may be welding, gluing, clamping or other reasonable and effective connection manner; the other end of the connecting rod penetrates through the mesh of the intratumoral implant 6 and extends into the incision 11 to be connected with the inner core wire 4 to form a limiting structure, and the annular connecting piece 3 forms a C-shaped structure after being fixed.
The core piece is inner core silk 4, and the near-end of inner core silk 4 and the near-end fixed connection of conveying rod 1, and the length of inner core silk 4 runs through whole conveying rod 1, and the distal end of inner core silk 4 stretches out from the distal end of conveying rod 1, and during the equipment, the distal end of inner core silk 4 wears to establish in proper order and is spacing in the annular of annular connecting piece 3 and the inside of intratumoral implant 6 to it is spacing at the distal end of conveying rod 1 with intratumoral implant 6. So alright realize linking together intratumoral implant 6 and transport pole 1, during the transport, transport pole 1 drives intratumoral implant 6 and removes to the pathological change position in little pipe, treat intratumoral implant 6 when reaching the pathological change position, can be through the near-end of rupture transport pole 1, the pull removes inner core silk 4, make inner core silk 4 deviate from in intratumoral implant 6's the inside and annular connecting piece 3's the annular, thereby release spacing between inner core silk 4 and the annular connecting piece 3, in order to detach intratumoral implant 6, so alright accomplish and know the process of taking off, this process of taking off is rapid, the operation of taking off is simple and reliable and stable, and difficult emergence is pseudo-detachment, and simultaneously, the mode of taking off is mechanical detachment, no release product, the operation risk is less.
It should be noted that, in this embodiment, the annular connection member 3 may be a ring-shaped structure formed by winding a connection wire, and may be formed by winding one connection wire or a plurality of connection wires, and the wound ring-shaped structure is a long strip and has two opposite ends.
Further, in the embodiment of the present invention, the spring 2 is sleeved at the distal end of the conveying rod 1, one end of the annular connecting member 3 is fixed between the conveying rod 1 and the spring 2, the fixing manner may be welding or bonding, the operation is simple and the fixing is firmer, the arrangement of the spring 2 can not only effectively fix the annular connecting member 3, but also increase the flexibility of the distal end of the conveying rod 1.
Of course, in other embodiments, the annular connecting pieces 3 are provided in plurality, and one end of each of the annular connecting pieces is fixed to the side of the distal end of the conveying rod 1 where the notch 11 is not provided, and is fixed between the conveying rod 1 and the spring 2; the other end of the inner core wire 4 penetrates through the mesh of the intra-tumor implant 6 and extends into the notch 11, and each annular connecting piece 3 forms a C-shaped structure after being fixed, so that when the inner core wire is assembled, the far end of the inner core wire 4 sequentially penetrates through and is limited in the rings of the annular connecting pieces 3 and the interior of the intra-tumor implant 6, and the intra-tumor implant 6 is more effectively and reliably limited at the far end of the conveying rod 1. When the intra-tumor implant 6 is delivered to a lesion site, the inner core wire 4 can be pulled and moved by breaking the proximal end of the delivery rod 1, so that the inner core wire 4 is released from the interior of the intra-tumor implant 6 and the ring shape of the plurality of ring-shaped connecting pieces 3, and the limit of the inner core wire 4 and the ring-shaped connecting pieces 3 is released, so that the intra-tumor implant 6 is released.
As shown in fig. 4, in the first embodiment of the present invention, a plurality of annular connecting members 3 are provided, the plurality of annular connecting members 3 are distributed at intervals along the circumferential direction of the conveying rod 1, each annular connecting member 3 is an annular structure formed by winding a connecting wire, and has an elongated shape and two opposite ends, one end of each annular connecting member 3 is fixed to the distal end of the conveying rod 1, and the other end of each annular connecting member 3 is inserted into a mesh of the intratumoral implant 6; the core component is an inner core wire 4, the proximal end of the inner core wire 4 is fixedly connected with the proximal end of the conveying rod 1, the length of the inner core wire 4 penetrates through the whole conveying rod 1, and the distal end of the inner core wire 4 extends out of the distal end of the conveying rod 1. When the device is assembled, the distal end of the inner core wire 4 is sequentially penetrated and limited in the interior of the intra-tumor implant 6 and the ring shape of the plurality of ring-shaped connecting pieces 3, so that the intra-tumor implant 6 is effectively and reliably limited at the distal end of the conveying rod 1. So alright realize linking together intratumoral implant 6 and transport pole 1, during the transport, transport pole 1 drives intratumoral implant 6 and removes to the pathological change position in little pipe, treat when intratumoral implant 6 reaches the pathological change position, can carry the near-end of pole 1 through the rupture, the pull removes inner core silk 4, make inner core silk 4 deviate from in the annular of a plurality of annular connecting pieces 3 and intratumoral implant 6's inside, thereby spacing between release inner core silk 4 and the annular connecting piece 3, in order to detach intratumoral implant 6, so alright accomplish and know the process of taking off, this process of taking off is rapid, the simple and reliable operation of taking off, and difficult emergence is pseudo-detachment, and simultaneously, the mode of taking off is mechanical detachment, no release product, the operation risk is less.
It should be noted that, in order to ensure that the spacing between the inner core wire 4 and the annular connecting member 3 has better reliability and stability, the length of the annular connecting member 3 is designed appropriately, and the inner core wire 4 is ensured to be just inserted into the insertion end ring of the annular connecting member 3 for spacing.
Further, in this application embodiment, the distal end cover of carrying pole 1 is equipped with spring 2, and the one end of a plurality of annular connecting piece 3 is all fixed between carrying pole 1 and spring 2, and welding or cementing can be chooseed for use to its fixed mode, and easy operation and fixed comparatively firm, annular connecting piece 3 both can be fixed effectively in the setting of spring 2, can increase the pliability of carrying 1 distal end of pole again.
In a third embodiment of the invention, as shown in fig. 5, the loop connector 3 is located inside the distal end of the delivery rod 1 and fixed at the proximal end of the intra-tumor implant 6, specifically, the loop connector 3 is a loop structure wound by connecting wires, and the loop connector 3 is fixed in a proximal sheath of the intra-tumor implant 6 by welding, bonding, fastening or other reasonable and effective means.
The core element is an inner core wire 4, the proximal end of the inner core wire 4 is fixedly connected with the proximal end of the delivery rod 1, the length of the inner core wire 4 is about twice of the length of the delivery rod 1, and when the core wire is assembled, the distal end of the inner core wire 4 passes through the ring of the annular connecting piece 3 and extends out of the proximal end of the delivery rod 1 so as to effectively and reliably limit the intratumoral implant 6 at the distal end of the delivery rod 1. During conveying, the conveying rod 1 drives the intra-tumor implant 6 to move to a pathological change part in the micro catheter, after the intra-tumor implant 6 reaches the pathological change part, one end of the inner core wire 4 is drawn out of the ring-shaped connecting piece 3 by breaking the near end of the conveying rod 1 and drawing the inner core wire 4 extending out of the near end of the conveying rod 1 or drawing the near end of the inner core wire 4, so that the position of the inner core wire 4 and the ring-shaped connecting piece 3 is released, and the intra-tumor implant 6 is detached. Therefore, the releasing process can be completed, the releasing process is rapid, the releasing operation is simple, stable and reliable, the false releasing is not easy to occur, meanwhile, the releasing mode is mechanical releasing, no releasing product exists, and the operation risk is small. It should be noted that, in specific implementation, the proximal end of the delivery rod is provided with an incision communicating with the accommodating cavity, and the distal end of the inner core wire 4 passes through the ring of the ring-shaped connector 3 and extends out of the proximal incision of the delivery rod 1.
In a fourth embodiment of the invention, shown in fig. 6 and 7, the annular connector 3 is located inside the distal end of the delivery rod 1 and is fixed proximal to the intratumoral implant 6; the inner core part comprises a lining tube 5 and an inner core wire 4 arranged in the lining tube 5, the near end of the inner core wire 4 is fixed at the near end of the conveying rod 1, the lining tube 5 can move in the conveying rod 1 along the inner core wire 4, the far end of the inner core wire 4 is exposed out of the far end of the lining tube 5 and is shaped into a configuration structure, and the configuration structure is limited in the ring shape of the ring-shaped connecting part 3 during assembly so as to limit the intra-tumor implant 6 at the far end of the conveying rod 1; during conveying, the conveying rod 1 drives the implant 6 to move to a pathological change part in the micro catheter, and after the implant 6 reaches the pathological change part, the lining pipe 5 can be moved towards the far end, so that the configuration structure of the inner core wire 4 is recovered into the lining pipe 5, the limiting of the inner core wire 4 and the annular connecting piece 3 is released, and the intratumoral implant 6 is released. Therefore, the releasing process can be completed, the releasing process is rapid, the releasing operation is simple, stable and reliable, the false releasing is not easy to occur, meanwhile, the releasing mode is mechanical releasing, no releasing product exists, and the operation risk is small.
It should be noted that, in this embodiment, the annular connection element 3 is arranged in the same manner as in the third embodiment, that is, the annular connection element 3 is a ring-shaped structure wound by a connection wire, and the annular connection element 3 is fixed in the proximal sheath of the intra-tumor implant 6 by welding, bonding, fastening or other reasonable and effective means.
In the specific embodiment of the invention, the proximal end of the inner core wire 4 is fixedly connected to the proximal end of the conveying rod 1, the proximal end of the conveying rod 1 is provided with a through hole communicated with the accommodating cavity, the through hole extends along the length direction of the conveying rod 1, the proximal end of the lining tube 5 is provided with a sliding part, the sliding part can be of an annular structure and is sleeved outside the proximal end of the lining tube 5, certainly, the sliding part can also be of a split structure and is fixedly connected to the outside of the proximal end of the lining tube 5, and the fixing mode can be welding or gluing; the mechanical release device for the intra-tumor implant further comprises a handle, a connecting piece is convexly arranged on one side of the handle, the connecting piece penetrates through the through hole to be connected to the sliding piece, the connecting mode can be selected from welding or gluing, and the handle is moved to drive the lining tube 5 to move inside the conveying rod 1. It should be noted that, the specific structures of the sliding member, the connecting member and the handle are not limited herein, as long as the handle can be moved to drive the lining tube 5 to move inside the conveying rod 1.
During design, the length of the through hole is designed reasonably to ensure that the structural structure of the inner core wire 4 can be recovered into the lining pipe 5 by moving the handle. Specifically, the length of the through-hole is generally not less than the distance from the distal end of the inner liner tube 5 to the annular connector 3 after assembly.
In this embodiment, when the intratumoral implant 6 is released, the inner core wire 4 is fixed, and the lining tube 5 moves left and right along the inner core wire 4, so that the structural structure of the inner core wire 4 is recovered into the lining tube 5, thereby releasing the limit of the inner core wire 4 and the annular connecting member 3. Of course, in other embodiments, the movement of the lining tube 5 inside the conveying rod 1 can be realized by other structural designs, which are not limited herein and fall within the protection scope of the present invention.
In another embodiment of the present invention, the proximal end of the inner core wire 4 is exposed out of the proximal end of the inner lining tube 5, the inner lining tube 5 is fixedly connected to the inner wall of the conveying rod 1 through a fixing member, the fixing member is disposed outside the inner lining tube 5 and connected to the inner wall of the conveying rod 1, the shape and structure of the fixing member are not limited herein, preferably, the fixing member is a ring-shaped structure and is sleeved outside the inner lining tube 5, and the outer wall of the fixing member is attached and fixedly connected to the inner wall of the conveying rod 1, so that the fixing of the inner lining tube 5 can be achieved. The proximal end of the inner core wire 4 is connected to the proximal end of the conveying rod 1, after the intra-tumor implant 6 is conveyed to a diseased region, the proximal end of the conveying rod 1 can be broken, and then the inner core wire 4 is pulled and moved, so that the structural structure of the inner core wire 4 is recovered into the inner lining pipe 5, the position of the inner core wire 4 and the annular connecting piece 3 is released, and the intra-tumor implant 6 is released.
In this embodiment, when the intratumoral implant 6 is released, the inner lining tube 5 is fixed, and the inner core wire 4 is movable, so that the structural structure of the inner core wire 4 is recovered into the inner lining tube 5, thereby releasing the limit of the inner core wire 4 and the annular connecting member 3. Of course, in other embodiments, the above process may be implemented by other structural designs, and all of them are within the protection scope of the present invention.
Further, in the embodiment of the present invention, the inner core wires 4 are multiple, the multiple inner core wires 4 are all disposed in the inner lining tube 5, and the distal ends of the multiple inner core wires 4 are all exposed out of the distal end of the inner lining tube 5, and the exposed end of each inner core wire 4 is shaped into a structural structure and is all limited in the ring shape of the ring-shaped connecting member 3. The structure design can ensure that the intratumoral implant 6 is more effectively and reliably limited at the distal end of the delivery rod 1. Preferably, the two inner core wires 4 are arranged, so that the intratumoral implant 6 can be effectively and reliably limited at the far end of the conveying rod 1, and can be quickly recovered into the lining tube 5, the limitation of the inner core wires 4 and the annular connecting piece 3 is quickly released, and the quick release is realized; of course, cost savings are also achieved to some extent.
It should be noted that, in all embodiments of the present invention, the inner core wire 4 is made of a shape memory alloy, the shape memory alloy has good elasticity and good deformation recovery capability under an external force, and the inner core wire 4 made of the shape memory alloy can facilitate rapid detachment of the intra-tumor implant 6 and is not prone to false detachment.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A mechanical release device for an intra-tumor implant, comprising: the conveying rod is of a hollow structure, and an accommodating cavity is formed inside the conveying rod;
an annular connector disposed at the distal end of the delivery rod and connected to an intratumoral implant;
a core member movably disposed within the receiving lumen, a distal end of the core member being retained with the annular connector to retain an intra-tumoral implant at a distal end of the delivery rod;
moving the inner core element can release the limit of the inner core element and the annular connecting element so as to release the intratumoral implant.
2. The mechanical release device for the intra-tumor implant according to claim 1, wherein one side of the distal end of the delivery rod is provided with a notch communicated with the accommodating cavity, the annular connecting piece is provided with two opposite ends, one end of the annular connecting piece is fixed on the side, which is not provided with the notch, of the distal end of the delivery rod, the other end of the annular connecting piece penetrates through the mesh hole of the intra-tumor implant and extends into the notch, and the annular connecting piece is fixed to form a C-shaped structure;
the core piece is an inner core wire, the proximal end of the inner core wire is fixedly connected with the proximal end of the conveying rod, and the distal end of the inner core wire sequentially penetrates through and is limited in the annular inner part of the annular connecting piece and the tumor implant so as to limit the tumor implant at the distal end of the conveying rod;
breaking the proximal end of the delivery rod can pull and move the inner core wire and can release the limit of the inner core wire and the annular connecting piece so as to release the intratumoral implant.
3. A mechanical release device for an intra-tumor implant according to claim 2, wherein the distal end of the delivery rod is sleeved with a spring, and one end of the loop connector is fixed between the delivery rod and the spring.
4. A mechanical release device for an intra-tumor implant according to claim 1, wherein the annular connecting member is a plurality of annular connecting members, a plurality of annular connecting members are arranged at intervals along the circumferential direction of the delivery rod, each annular connecting member has two opposite ends, one end of each annular connecting member is fixed at the distal end of the delivery rod, and the other end of each annular connecting member is arranged in a mesh hole of the intra-tumor implant;
the core element is an inner core wire, the proximal end of the inner core wire is fixedly connected with the proximal end of the conveying rod, and the distal end of the inner core wire sequentially penetrates through and is limited in the interior of the intra-tumor implant and the rings of the plurality of ring-shaped connecting pieces so as to limit the intra-tumor implant at the distal end of the conveying rod;
breaking the proximal end of the delivery rod may draw the inner core wire and may release the retention of the inner core wire with the plurality of loop connectors to release the intratumoral implant.
5. A mechanical release device for an intra-tumor implant according to claim 4, wherein a spring is sleeved on a distal end of the delivery rod, and one end of each of the plurality of loop connectors is fixed between the delivery rod and the spring.
6. A mechanical release device for an intra-tumor implant according to claim 1, wherein the proximal end of the delivery rod is provided with an incision communicating with the accommodation chamber, and the annular connector is located inside the distal end of the delivery rod and fixed to the proximal end of the intra-tumor implant;
the core piece is an inner core wire, the proximal end of the inner core wire is fixedly connected with the proximal end of the conveying rod, and the distal end of the inner core wire passes through the ring of the ring-shaped connecting piece and extends out of the incision so as to limit the intratumoral implant at the distal end of the conveying rod;
and breaking the proximal end of the conveying rod, pulling the inner core wire extending out of the incision or pulling the proximal end of the inner core wire, so that the inner core wire is drawn out of the ring-shaped connecting piece, and releasing the limit of the inner core wire and the ring-shaped connecting piece to release the intratumoral implant.
7. A mechanical release device for an intra-tumor implant according to claim 1, wherein said annular connector is located inside the distal end of said delivery rod and is fixed at the proximal end of the intra-tumor implant;
the inner core piece comprises an inner lining tube and an inner core wire arranged in the inner lining tube, the far end of the inner core wire is exposed out of the far end of the inner lining tube and is shaped into a configuration structure, and the configuration structure is limited in the ring shape of the ring-shaped connecting piece so as to limit the intratumoral implant at the far end of the conveying rod;
and moving the inner lining pipe or the inner core wire to enable the structural structure of the inner core wire to be recovered into the inner lining pipe, and releasing the limit of the inner core wire and the annular connecting piece so as to release the intratumoral implant.
8. The mechanical release device for an intratumoral implant according to claim 7, wherein said core wires are a plurality of, said plurality of core wires being disposed inside said inner liner and having distal ends exposed at the distal end of said inner liner, the exposed end of each of said core wires being shaped into a configuration and being retained within the annulus of said annular connecting member.
9. The mechanical release device for the intra-tumor implant according to claim 7, wherein the proximal end of the inner core wire is fixedly connected to the proximal end of the delivery rod, the proximal end of the delivery rod is provided with a through hole communicated with the accommodating cavity, the through hole extends along the length direction of the delivery rod, the proximal end of the lining tube is provided with a sliding part, the mechanical release device for the intra-tumor implant further comprises a handle, one side of the handle is convexly provided with a connecting part, the connecting part passes through the through hole and is connected to the sliding part, and the handle can drive the lining tube to move inside the delivery rod;
or the near end of the inner core wire is exposed out of the near end of the lining tube, the lining tube is fixedly connected to the inner wall of the conveying rod through a fixing piece, the near end of the inner core wire is connected to the near end of the conveying rod, and the inner core wire can be pulled and moved by breaking the near end of the conveying rod.
10. A mechanical release device for an intra-tumor implant according to any of claims 1 to 9, wherein the material of said inner core wire is a shape memory alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211193019.3A CN115607218B (en) | 2022-09-28 | 2022-09-28 | Mechanical release device for intratumoral implant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211193019.3A CN115607218B (en) | 2022-09-28 | 2022-09-28 | Mechanical release device for intratumoral implant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115607218A true CN115607218A (en) | 2023-01-17 |
| CN115607218B CN115607218B (en) | 2023-11-07 |
Family
ID=84860536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211193019.3A Active CN115607218B (en) | 2022-09-28 | 2022-09-28 | Mechanical release device for intratumoral implant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115607218B (en) |
Citations (10)
| 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 |
| US20080140178A1 (en) * | 2006-11-30 | 2008-06-12 | William Cook Europe Aps | Implant release mechanism |
| US20160317274A1 (en) * | 2013-12-30 | 2016-11-03 | Lifetech Scientific (Shenzhen) Co., Ltd. | Implant Conveying Device and Implanted Medical Instrument |
| CN110123406A (en) * | 2018-02-02 | 2019-08-16 | 微创神通医疗科技（上海）有限公司 | The conveying device of implantation material |
| CN110882091A (en) * | 2013-11-20 | 2020-03-17 | 詹姆斯·E·科尔曼 | Adjustable heart valve implant |
| CN110974333A (en) * | 2020-01-07 | 2020-04-10 | 北京美中双和医疗器械股份有限公司 | Releasable embolic coil system |
| CN114469231A (en) * | 2022-01-27 | 2022-05-13 | 南京思脉德医疗科技有限公司 | Embolic coil conveying system |
| CN217066493U (en) * | 2021-11-24 | 2022-07-29 | 上海微创心脉医疗科技(集团)股份有限公司 | Release mechanism and plug device |
| CN114948046A (en) * | 2022-04-11 | 2022-08-30 | 上海心玮医疗科技股份有限公司 | Delivery system for implant |
| CN114948361A (en) * | 2022-07-29 | 2022-08-30 | 杭州亿科医疗科技有限公司 | Safe in utilization's tumor internal turbulent flow device |
-
2022
- 2022-09-28 CN CN202211193019.3A patent/CN115607218B/en active Active
Patent Citations (10)
| 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 |
| US20080140178A1 (en) * | 2006-11-30 | 2008-06-12 | William Cook Europe Aps | Implant release mechanism |
| CN110882091A (en) * | 2013-11-20 | 2020-03-17 | 詹姆斯·E·科尔曼 | Adjustable heart valve implant |
| US20160317274A1 (en) * | 2013-12-30 | 2016-11-03 | Lifetech Scientific (Shenzhen) Co., Ltd. | Implant Conveying Device and Implanted Medical Instrument |
| CN110123406A (en) * | 2018-02-02 | 2019-08-16 | 微创神通医疗科技（上海）有限公司 | The conveying device of implantation material |
| CN110974333A (en) * | 2020-01-07 | 2020-04-10 | 北京美中双和医疗器械股份有限公司 | Releasable embolic coil system |
| CN217066493U (en) * | 2021-11-24 | 2022-07-29 | 上海微创心脉医疗科技(集团)股份有限公司 | Release mechanism and plug device |
| CN114469231A (en) * | 2022-01-27 | 2022-05-13 | 南京思脉德医疗科技有限公司 | Embolic coil conveying system |
| CN114948046A (en) * | 2022-04-11 | 2022-08-30 | 上海心玮医疗科技股份有限公司 | Delivery system for implant |
| CN114948361A (en) * | 2022-07-29 | 2022-08-30 | 杭州亿科医疗科技有限公司 | Safe in utilization's tumor internal turbulent flow device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115607218B (en) | 2023-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2901928T3 (en) | Systems for the separation of embolic implants | |
| JP4960257B2 (en) | Delivery system | |
| US20200222057A1 (en) | Pusher arm and ball release mechanism for embolic coils | |
| JP2021058689A (en) | Occlusive device delivery system with mechanical detachment | |
| JP6359664B2 (en) | Vascular occlusive device delivery system | |
| US11090176B2 (en) | Detachable metal balloon delivery device and method | |
| CN104546242B (en) | Transporting device of implanting body and implanting medical instrument | |
| JP2010502378A (en) | Loop tip wire guide | |
| WO2017113626A1 (en) | Delivery system and lumen stent system | |
| EP2668914A1 (en) | Implant system | |
| JP2021013801A (en) | Partially oval capsule for reloadable hemostasis clipping device | |
| AU2015227530B2 (en) | A vasculature occlusion device detachment system with tapered corewire and heater activated fiber detachment | |
| EP3352685B1 (en) | Medical device delivery system | |
| CN115607218A (en) | Mechanical releasing device for intratumoral implant | |
| CN110141409A (en) | Yarn guide component is used in a kind of conveying of branch type overlay film frame | |
| CN113116446B (en) | Delivery device and embolization system | |
| CN114699132A (en) | Mechanical releasing device and releasing method for surgical implant | |
| CN111110302B (en) | Conveying system | |
| CN106880386B (en) | Non-planar heating chamber separation mechanism for implantable vaso-occlusive device delivery system | |
| CN115590574A (en) | Intracranial aneurysm neck auxiliary forming integrated device and using method thereof | |
| CN217723596U (en) | Medical instrument pushing device and medical instrument pushing system | |
| CN217040207U (en) | Conveying mechanism of aneurysm plugging device | |
| CN211534770U (en) | Spring device for electric coagulation embolism | |
| CN218528814U (en) | Embolism spring coil assembly | |
| JP2022145643A (en) | Systems and methods for embolic implant detachment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |