CN112206073B - Delivery system for ventricular volume reduction device - Google Patents
Delivery system for ventricular volume reduction device Download PDFInfo
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- CN112206073B CN112206073B CN202011050029.2A CN202011050029A CN112206073B CN 112206073 B CN112206073 B CN 112206073B CN 202011050029 A CN202011050029 A CN 202011050029A CN 112206073 B CN112206073 B CN 112206073B
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- 230000002861 ventricular Effects 0.000 title claims abstract description 69
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 title claims abstract description 47
- 230000000149 penetrating effect Effects 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 7
- 230000006978 adaptation Effects 0.000 claims 1
- 210000003205 muscle Anatomy 0.000 abstract description 10
- 238000004873 anchoring Methods 0.000 description 13
- 210000005240 left ventricle Anatomy 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012800 visualization Methods 0.000 description 2
- 206010019280 Heart failures Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000033774 Ventricular Remodeling Diseases 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 210000001765 aortic valve Anatomy 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000001105 femoral artery Anatomy 0.000 description 1
- 230000004217 heart function Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- Health & Medical Sciences (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
The invention relates to a conveying system of a ventricular volume-reducing device, which comprises a mandrel, an outer sleeve and an operating handle, wherein one ends of the mandrel and the outer sleeve, which are far away from the operating handle, are both used for being connected with the ventricular volume-reducing device, a conveying sheath and a loader are sleeved on the periphery of the outer sleeve, one end of the conveying sheath, which is close to the operating handle, is connected with the loader, a shaft hole is formed in the outer sleeve in a penetrating manner along the axis direction of the outer sleeve, and the mandrel is arranged in the shaft hole in a penetrating manner; the outer sleeve is provided with an inflatable bag body which is sleeved on the periphery of one end of the outer sleeve, which is far away from the operating handle, a cavity which is communicated with the interior of the inflatable bag body is arranged on the outer sleeve, the cavity is not communicated with the shaft hole, and an operating port which is communicated with the cavity is arranged on the outer sleeve. The inflatable bag body is arranged on the outer sleeve, and pressure is applied to the anchor thorns after the inflatable bag body is inflated, so that the anchor thorns and the wall muscles of the chamber are reliably anchored, and the ventricular volume reduction device is prevented from shifting or falling off.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a conveying system of a ventricular volume-reducing device.
Background
Percutaneous Ventricular Remodeling (PVR) is a novel technique for minimally invasive interventional treatment of ventricular tumor and heart failure, and is mainly characterized in that a ventricular isolation device is implanted into a left ventricle of a patient through catheter retrograde so as to isolate a nonfunctional ventricular area, reduce the contraction and diastole volumes of the left ventricle, reduce the tension of the left ventricle and improve the reconstruction and heart function of the left ventricle; compared with the traditional surgical left ventricular reconstruction, the Percutaneous Ventricular Reconstruction (PVR) has the advantages of small trauma and low safety risk, so that the PVR has wide application prospect.
The Chinese patent application with publication number of CN109009589A discloses a ventricular volume-reducing device and a conveying system thereof, which can realize accurate and controllable release of the ventricular volume-reducing device by utilizing the conveying system, has small required release and recovery space, can recover and repeatedly position for many times after being unfolded, and reduces the implantation difficulty of the ventricular volume-reducing device. After the ventricular volume reduction device is released, the anchoring of the anchoring device is realized in the muscle of the ventricular wall, but the anchoring of the anchoring device is gradually penetrated in the muscle of the ventricular wall when the ventricular volume reduction device is gradually unfolded, the penetration depth is uncontrollable, and in the actual operation process, the situation that the ventricular volume reduction device is shifted or falls off due to the infirm anchoring of the anchoring device easily occurs, so that the treatment effect is influenced.
Therefore, how to ensure firm anchoring of the anchoring thorns and the wall muscles during the release of the ventricular volume-reduction device is a technical problem to be solved by the person skilled in the art.
Disclosure of Invention
Aiming at the defects in the prior art, the technical problem to be solved by the invention is to provide a conveying system of a ventricular volume reduction device, wherein an inflatable bag body is arranged on an outer sleeve of the conveying system, and the inflatable bag body can be utilized to apply pressure to an anchor, so that the anchor can smoothly penetrate into the wall muscle of a chamber, the anchoring reliability of the anchor and the wall muscle of the chamber is ensured, and the displacement or falling-off of the ventricular volume reduction device is prevented.
In order to solve the technical problems, the conveying system of the ventricular volume reduction device comprises a mandrel, an outer sleeve and an operating handle, wherein one ends of the mandrel and the outer sleeve, which are far away from the operating handle, are both used for being connected with the ventricular volume reduction device, a conveying sheath and a loader are sleeved on the periphery of the outer sleeve, one ends of the conveying sheath, which are close to the operating handle, are connected with the loader, a shaft hole is formed in the outer sleeve in a penetrating manner along the axis direction of the outer sleeve, and the mandrel is arranged in the shaft hole in a penetrating manner; the outer sleeve is provided with an inflatable bag body which is sleeved on the periphery of one end of the outer sleeve, which is far away from the operating handle, a cavity which is communicated with the interior of the inflatable bag body is arranged on the outer sleeve, the cavity is not communicated with the shaft hole, and an operating port which is communicated with the cavity is arranged on the outer sleeve.
In the invention, the inflatable bag body is additionally arranged, and in the process of releasing the ventricular volume reduction device, gas or liquid can be filled into the cavity through the operation port to expand the inflatable bag body and apply pressure to the ventricular volume reduction device, so that the anchor of the ventricular volume reduction device can smoothly penetrate into the wall muscle of the chamber, the reliable anchoring of the ventricular volume reduction device and the wall muscle of the chamber is ensured, and the displacement or falling of the ventricular volume reduction device is prevented.
Preferably, the operating handle comprises a housing comprising a rotationally coupled disengagement section and a rotation section; a sliding part is arranged in the shell, a guide hole is formed in the sliding part in a penetrating manner, a guide part is arranged in the guide hole in a penetrating manner, the guide part is fixed relative to the circumferential position of the sliding part, and the sliding part can do linear reciprocating motion along the length direction of the guide part under the action of external force; the sliding piece is fixedly connected with one end, close to the operating handle, of the outer sleeve, one end, close to the operating handle, of the mandrel is fixedly connected with the guide piece, and the disengaging section is non-rotatably connected with the guide piece. The sliding piece is subjected to linear reciprocating motion under the action of external force, and can drive the outer sleeve to synchronously move, so that the outer sleeve slides back and forth relative to the mandrel, and corresponding release and retraction actions of the ventricular volume reduction device are realized; and because the release section and the guide piece are not rotatably connected, when the release section is rotated, the guide piece can drive the sliding piece to synchronously rotate with the release section, so that the mandrel and the outer sleeve synchronously rotate together, and the mandrel and the outer sleeve can be separated from the ventricular volume reduction device.
Preferably, the outer circumference of the slider is provided with an external thread, and the inner circumference of the rotating section is provided with an internal thread adapted to the external thread. By adopting the structure, the sliding piece can be driven to slide relative to the guiding piece by twisting the rotating section.
Preferably, a first hole body, a second hole body and a third hole body are sequentially arranged in the sliding piece along the direction away from the release section, and the first hole body, the second hole body and the third hole body are communicated with each other and are coaxially arranged with the sliding piece; the outer sleeve is fixedly arranged in the first hole body in a penetrating mode, the mandrel is arranged in the second hole body and the third hole body in a penetrating mode, and a sealing piece is arranged in the third hole body, so that a sealing space is formed inside the second hole body; the sliding piece is also provided with a first operation channel communicated with the second hole body and a second operation channel communicated with the first hole body, and the second operation channel is aligned with the operation port, so that the second operation channel is communicated with the cavity through the operation port. Through the first operation channel, the air in the blood vessel can be discharged by the outer sleeve; with the second working channel, gas or liquid may be injected into the inflatable bladder to inflate it, penetrating the anchors of the ventricular volume reduction device into the wall muscles of the chamber.
Preferably, the sealing member comprises a sealing gasket sleeved on the periphery of the mandrel and a set screw in threaded connection with the inner periphery of the third hole body, the sealing gasket is tightly abutted to the bottom wall of the third hole body, and the inner periphery of the sealing gasket is in sealing abutment with the periphery of the mandrel. The sealing gasket can play a role in sealing, so that blood is prevented from leaking from the third hole body to enter the operating handle.
Preferably, the guide member comprises a first support, a second support and a guide rod connected between the first support and the second support, and the guide rod is penetrated in the guide hole; the first support is in rotational connection with the rotating section, the second support is in non-rotatable connection with the disengaging section, and the axial positions of the first support and the second support relative to the shell are fixed.
Preferably, a first operation pipe and a second operation pipe are fixedly connected in the first operation channel and the second operation channel respectively, and the other ends of the first operation pipe and the second operation pipe penetrate through the first support and then extend out of the operation handle. The operator can perform the auxiliary operation through the portions of the first and second operation pipes located outside the operation handle.
Preferably, one end of the mandrel, which is close to the operating handle, is fixedly connected with the first support.
Preferably, a reinforcing tube is sleeved on the outer periphery of a part of the mandrel positioned in the operating handle, the mandrel is in sealing connection with the sealing gasket through the reinforcing tube, and the outer periphery of the reinforcing tube is in sealing connection with the inner periphery of the sealing gasket. The setting of strengthening pipe can play the effect of protection dabber.
Preferably, a locker is arranged at one end of the release Duan Yuan away from the rotating section, the locker comprises a locking sleeve sleeved on the periphery of the outer sleeve, a locking hole is formed in the locking sleeve along the radial direction of the locking sleeve, and a locking screw is connected in the locking hole in a threaded manner; a passage is formed between the inner periphery of the locking sleeve and the outer periphery of the outer sleeve for facilitating passage of the loader. The locker is arranged to limit the position of the loader relative to the operating handle after the ventricular volume-reducing device is delivered in place, so as to prevent the loader from affecting the actions of the outer sleeve and the mandrel.
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. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of a ventricular volume reduction device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a first bracket and a second bracket according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a delivery system for a ventricular volume reduction device according to an embodiment of the present invention;
FIG. 4 is a schematic view showing the internal structure of an operating handle according to an embodiment of the present invention;
FIG. 5 is an exploded view of an operating handle according to an embodiment of the present invention;
FIG. 6 is a schematic view of a slider according to an embodiment of the present invention;
FIG. 7 is a schematic view of a connection structure of a slider, an outer sleeve, and a mandrel according to an embodiment of the present invention;
FIG. 8 is a schematic view of a connection structure between an outer sleeve and an inflatable balloon according to an embodiment of the present invention.
Description of the drawings:
1-a ventricular volume reduction device; 11-a first bracket; 12-a second stent; 13-a first connector; 14-a second connector; 15-anchoring; 16-a base; 17-developing the mark; 2-a mandrel; 21-reinforcing the tube; 3-an outer sleeve; 31-an inflatable balloon; 32-a cavity; 33-shaft holes; 4-operating a handle; 41-disengaging section; 411-limiting blocks; 42-rotating the segment; 43-slide; 431-guiding hole; 432-first aperture; 433-a second aperture; 434-a third aperture; 435-a first operating channel; 436-a second operating channel; 44-a first support; 45-a second support; 451-limit grooves; 46-a guide rod; 47-sealing gasket; 48-set screw; 49-locker; 5-a delivery sheath; 6-loader; 7-a first handling tube; 8-a second operating tube.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
The present embodiment provides a delivery system of a ventricular volume reduction device, which is used for delivering a ventricular volume reduction device 1 shown in fig. 1 and 2, and fig. 1 and 2 are schematic structural diagrams of the ventricular volume reduction device in a deployed state, in the deployed state, the ventricular volume reduction device 1 includes a first support 11 and a second support 12, the first support 11 is located at an inner side of the second support 12, a first connecting piece 13 is disposed on the first support 11, a second connecting piece 14 is disposed on the second support 12, the first connecting piece 13 and the second connecting piece 14 are reversely disposed, and an end of the first support 11 away from the first connecting piece 13 and an end of the second support 12 away from the second connecting piece 14 are connected with each other, and an anchor 15 is disposed at the connection. Wherein, the inner circumferences of the first connecting piece 13 and the second connecting piece 14 are provided with internal threads so as to be connected with a conveying system, the ventricular volume reduction device can be stretched to form a long strip shape under the action of external force, and when the ventricular volume reduction device is in a stretched state, the first connecting piece 13 and the second connecting piece 14 are far away from each other, and specific reference can be made to description of the ventricular volume reduction device in CN109009589 a.
Specifically, the end of the second connecting piece 14 away from the first bracket 11 is connected with a base 16, so as to play a role in stabilizing the whole ventricular volume-reducing device 1, and prevent the ventricular volume-reducing device 1 from puncturing the ventricular wall and causing damage to the patient. And at least one visualization mark 17 is provided on the side of the ventricular volume reduction device 1 near the anchoring 15 to increase the visibility of the ventricular volume reduction device provided herein in an examination such as X-ray. The visualization mark 17 may indicate the location of the ventricular volume reduction device 1 during the placement of the ventricular volume reduction device 1.
As shown in fig. 3, 4, 5, 6, 7 and 8, the conveying system of the ventricular volume-reducing device of the embodiment includes a mandrel 2, an outer sleeve 3 and an operating handle 4, a shaft hole is formed in the outer sleeve 3 in a penetrating manner along an axial direction of the outer sleeve 3, the mandrel 2 is arranged in the shaft hole in a penetrating manner, one ends of the mandrel 2 and the outer sleeve 3, which are far away from the operating handle 4, are respectively in threaded connection with a second connecting piece 14 and a first connecting piece 13, a conveying sheath 5 and a loader 6 are further sleeved on the periphery of the outer sleeve 3, and one end, which is close to the operating handle 4, of the conveying sheath 5 is connected with the loader 6. In this embodiment, the delivery sheath 5 is used as a channel of the delivery mandrel 2, the outer sleeve 3 and the elongated ventricular volume reduction device connected to the two, when in use, the delivery sheath 5 is delivered to the apex of the left ventricle along the arterial vascular channel via the femoral artery, the aorta and the aortic valve, then the mandrel 2 with the ventricular volume reduction device mounted thereon and the outer sleeve 3 are loaded into the loader 6 together, and then one end of the loader 6 far away from the operating handle 4 is in threaded connection with the delivery sheath 5, at this time, an operator can deliver the ventricular volume reduction device to the target position along the delivery sheath 5 through the operating handle 4. In practice, in order to facilitate the smooth arrival of the delivery sheath 5 at the target site, the distal end of the delivery sheath 5 may be designed as a bendable structure, which is a prior art in the art and will not be described herein.
Further, an inflatable bag body 31 is sleeved on the outer periphery of one end, far away from the operating handle 4, of the outer sleeve 3, the inflatable bag body 31 is specifically a balloon, the size of the inflated inflatable bag body 31 is matched with the largest inner peripheral size of the inflated ventricular volume reduction device 1, a cavity 32 communicated with the inside of the inflatable bag body 31 is arranged on the outer sleeve 3, the cavity 32 is not communicated with a shaft hole 33 for accommodating the mandrel 2, and an operating port communicated with the cavity is arranged on the outer sleeve 3, so that liquid or gas which enables the inflatable bag body 31 to be inflated can be conveniently injected into the inflatable bag body 31 through the operating port. Compared with the traditional conveying system, after the ventricular volume-reducing device is conveyed in place and released, the conveying system of the embodiment can apply pressure to the ventricular volume-reducing device 1 through the expanded inflatable bag body 31, so that the anchor 15 of the ventricular volume-reducing device is smoothly penetrated into the wall muscle of the chamber, and the displacement or falling off of the ventricular volume-reducing device 1 caused by the unstable anchoring of the anchor 15 can be effectively prevented.
Specifically, the operating handle 4 includes a housing including a release section 41 and a rotation section 42 which are rotatably connected, an inner circumference of the rotation section 42 is provided with an internal thread, a slider 43 is provided inside the housing, an outer circumference of the slider 43 is provided with an external thread which mates with an internal Zhou Shi of the rotation section 42, and screwing the rotation section 42 causes the slider 43 to reciprocate linearly along the guide.
The guide comprises a first support 44 and a second support 45, the axial positions of the first support 44 and the second support 45 relative to the shell of the operating handle 4 are fixed, the first support 44 is rotationally connected with the rotating section 42, and the second support 45 is non-rotatably connected with the disengaging section 41; specifically, a limiting groove 451 is disposed on the outer periphery of the second support 45, a limiting block 411 adapted to the limiting groove is disposed on the inner wall of the releasing section 41, and the limiting groove 451 and the limiting block 411 cooperate to define the circumferential position of the second support 45 relative to the releasing section 41. Two guide rods 46 are connected between the first support 44 and the second support 45, two guide holes 431 are provided in the slider 43, and the two guide rods 46 are slidably inserted into the two guide holes 431, respectively. The slider 43 can reciprocate linearly along the length direction of the guide rod 46 by the driving of the rotating section 42.
Specifically, the inside of the sliding member 43 is provided with a first hole 432, a second hole 433 and a third hole 434 in sequence along the direction away from the releasing section 41, and the first hole 432, the second hole 433 and the third hole 434 are mutually communicated and are all coaxially arranged with the sliding member 43; one end of the outer sleeve 3, which is close to the operating handle 4, is fixedly penetrated (e.g. glued) in the first hole 432, and one end of the mandrel 2, which is close to the operating handle 4, extends out of the second hole 433 and the third hole 434 and is fixedly connected (e.g. glued) with the first support 44; a first operating channel 435 communicating with the second hole body 433 and a second operating channel 436 communicating with the first hole body 432 are also provided on the slider 43, and the second operating channel 436 is aligned with the operating port on the outer sleeve 3. In this embodiment, the first operating channel 435 and the second operating channel 436 are respectively fixedly connected (e.g. glued) with the first operating tube 7 and the second operating tube 8, the other ends of the first operating tube 7 and the second operating tube 8 penetrate the first support 44 and then extend out of the operating handle 4, and two-way valves are respectively arranged at the ends of the first operating tube 7 and the second operating tube 8 so as to facilitate operation.
In practice, the operator can rotate the rotating section 42 to make the sliding piece 43 reciprocate, so as to drive the outer sleeve 3 to extend or retract relative to the mandrel 2, so that the ventricular volume reduction device 1 is unfolded into an umbrella shape or retracted into a long strip shape; when the ventricular volume reduction device 1 is released, the release section 41 may be rotated such that the rotation section 42, the sliding member 43, the guiding member, the outer sleeve 3 and the mandrel 2 are rotated together in synchronization such that the mandrel 2 is separated from the second connecting member 14 and the outer sleeve 3 is separated from the first connecting member 13, so that the mandrel 2 and the outer sleeve 3 are taken out. In addition, during the installation, the air discharge operation may be performed through the first operation tube 7, and the inflation gas or liquid may be injected into the inflatable bladder 31 through the second operation tube 8.
In addition, a reinforcing tube 21 is sleeved on the outer periphery of a part of the mandrel 2 positioned in the operating handle 4, one end of the reinforcing tube 21 is fixedly connected with the first support 44, and the other end of the reinforcing tube extends into the outer sleeve 3 so as to protect the mandrel 2. And a sealing member is provided in the third hole body 434 such that a sealed space is formed inside the second hole body 433 so as to facilitate the exhausting operation through the first operating pipe 7.
The above-mentioned seal member specifically includes a packing 47 and a set screw 48 which are fitted around the outer periphery of the reinforcing tube 21, the set screw 48 being screwed to the inner periphery of the third hole 434, the packing 47 being closely abutted against the bottom wall of the third hole 434, and the inner periphery of the packing 47 being closely abutted against the outer periphery of the reinforcing tube 21, so that the packing 47 and the second hole 433 and the packing 47 and the reinforcing tube 21 are sealed against blood leakage and into the operation handle. In practice, instead of the set screw 48, other parts may be used, such as a fastener fitted around the periphery of the reinforcing tube, which is glued to the third hole so that the gasket is in close abutment against the bottom wall of the third hole.
Further, a locker 49 is provided at one end of the release section 41 away from the rotation section 42, the locker 49 comprises a locking sleeve sleeved on the outer circumference of the outer sleeve 3, a locking hole is provided on the locking sleeve along the radial direction, and a locking screw is connected in the locking hole in a threaded manner; a passage through which the loader 6 is convenient to pass is formed between the inner periphery of the locking sleeve and the outer periphery of the outer sleeve 3, the loader 6 gradually approaches the operating handle 4 along with the ventricular volume reduction device 1 gradually approaching the target position, and after the ventricular volume reduction device 1 reaches the target position, one end of the loader 6, which is close to the operating handle 4, is positioned between the inner periphery of the locking sleeve and the outer periphery of the outer sleeve 3, and at the moment, the locking screw is tightened, so that the position of the loader 6 relative to the operating handle 4 can be limited, and the action of the outer sleeve and the mandrel is prevented from being influenced.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (5)
1. The utility model provides a delivery system of ventricular volume reduction device, includes dabber, outer tube and operating handle, dabber and outer tube keep away from operating handle's one end all is used for being connected with ventricular volume reduction device the periphery of outer tube still overlaps and is equipped with and carries sheath and loader, this carry the sheath with be close to operating handle's one end with loader is connected its characterized in that:
the inside of the outer sleeve is provided with a shaft hole in a penetrating way along the axis direction, and the mandrel is arranged in the shaft hole in a penetrating way;
an inflatable bag body is sleeved on the periphery of one end, far away from the operating handle, of the outer sleeve, a cavity communicated with the interior of the inflatable bag body is arranged on the outer sleeve, the cavity is not communicated with the shaft hole, and an operating port communicated with the cavity is arranged on the outer sleeve;
the operating handle comprises a shell, wherein the shell comprises a disengaging section and a rotating section which are connected in a rotating way;
a sliding part is arranged in the shell, a guide hole is formed in the sliding part in a penetrating manner, a guide part is arranged in the guide hole in a penetrating manner, the guide part is fixed relative to the circumferential position of the sliding part, and the sliding part can do linear reciprocating motion along the length direction of the guide part under the action of external force;
the sliding piece is fixedly connected with one end of the outer sleeve, which is close to the operating handle, the mandrel is fixedly connected with the guide piece at one end of the outer sleeve, which is close to the operating handle, and the disengaging section is non-rotatably connected with the guide piece;
the inside of the sliding piece is provided with a first hole body, a second hole body and a third hole body in sequence along the direction away from the release section, and the first hole body, the second hole body and the third hole body are communicated with each other and are coaxially arranged with the sliding piece;
the outer sleeve is fixedly arranged in the first hole body in a penetrating mode, the mandrel is arranged in the second hole body and the third hole body in a penetrating mode, and a sealing piece is arranged in the third hole body, so that a sealing space is formed inside the second hole body;
a first operation channel communicated with the second hole body and a second operation channel communicated with the first hole body are further arranged on the sliding piece, and the second operation channel is aligned with the operation port, so that the second operation channel is communicated with the cavity through the operation port;
the guide piece comprises a first support, a second support and a guide rod connected between the first support and the second support, and the guide rod is arranged in the guide hole in a penetrating way; the first support is rotationally connected with the rotating section, the second support is non-rotationally connected with the disengaging section, and the axial positions of the first support and the second support relative to the shell are fixed;
a first operation pipe and a second operation pipe are fixedly connected in the first operation channel and the second operation channel respectively, and the other ends of the first operation pipe and the second operation pipe penetrate through the first support and then extend out of the operation handle;
the periphery of slider is provided with the external screw thread, the inner periphery of rotatory section be provided with the internal screw thread of external screw thread adaptation.
2. A delivery system for a ventricular volume reduction device as claimed in claim 1 wherein:
the sealing piece comprises a sealing gasket and a set screw which are sleeved on the periphery of the mandrel, the set screw is in threaded connection with the inner periphery of the third hole body, the sealing gasket is tightly abutted to the bottom wall of the third hole body, and the inner periphery of the sealing gasket is in sealing abutment with the periphery of the mandrel.
3. A delivery system for a ventricular volume reduction device as claimed in claim 1 wherein:
and one end of the mandrel, which is close to the operating handle, is fixedly connected with the first support.
4. A delivery system for a ventricular volume reduction device as claimed in claim 2 wherein:
the periphery of a part of the mandrel positioned in the operating handle is sleeved with a reinforcing pipe, the mandrel is in sealing connection with the sealing gasket through the reinforcing pipe, and the periphery of the reinforcing pipe is in sealing connection with the inner periphery of the sealing gasket.
5. A delivery system for a ventricular volume reduction device as claimed in claim 1 wherein:
a locker is arranged at one end of the release Duan Yuan, which is away from the rotating section, and comprises a locking sleeve sleeved on the periphery of the outer sleeve, a locking hole is formed in the locking sleeve along the radial direction of the locking sleeve, and a locking screw is connected in the locking hole in a threaded manner; a passage is formed between the inner periphery of the locking sleeve and the outer periphery of the outer sleeve for facilitating passage of the loader.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011050029.2A CN112206073B (en) | 2020-09-29 | 2020-09-29 | Delivery system for ventricular volume reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011050029.2A CN112206073B (en) | 2020-09-29 | 2020-09-29 | Delivery system for ventricular volume reduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112206073A CN112206073A (en) | 2021-01-12 |
| CN112206073B true CN112206073B (en) | 2024-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011050029.2A Active CN112206073B (en) | 2020-09-29 | 2020-09-29 | Delivery system for ventricular volume reduction device |
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| Country | Link |
|---|---|
| CN (1) | CN112206073B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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