CN114145813A - Interatrial septum stoma device - Google Patents
Interatrial septum stoma device Download PDFInfo
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- CN114145813A CN114145813A CN202111574625.5A CN202111574625A CN114145813A CN 114145813 A CN114145813 A CN 114145813A CN 202111574625 A CN202111574625 A CN 202111574625A CN 114145813 A CN114145813 A CN 114145813A
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- ostomy device
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- 210000004971 interatrial septum Anatomy 0.000 title claims abstract description 26
- 238000005520 cutting process Methods 0.000 claims abstract description 37
- 238000006073 displacement reaction Methods 0.000 claims abstract description 9
- 230000001746 atrial effect Effects 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 208000005189 Embolism Diseases 0.000 abstract description 5
- 210000003157 atrial septum Anatomy 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 239000007943 implant Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 206010024119 Left ventricular failure Diseases 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 210000005246 left atrium Anatomy 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002107 myocardial effect Effects 0.000 description 2
- 206010007558 Cardiac failure chronic Diseases 0.000 description 1
- 206010019280 Heart failures Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000003511 endothelial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004088 pulmonary circulation Effects 0.000 description 1
- 208000002815 pulmonary hypertension Diseases 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 210000005245 right atrium Anatomy 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 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
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
- A61B17/32053—Punch like cutting instruments, e.g. using a cylindrical or oval knife
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B2017/320064—Surgical cutting instruments with tissue or sample retaining means
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to the technical field of medical instruments, and particularly discloses an interatrial septum stoma device. The second sheath tube is sleeved on the first sheath tube, the distal end of the second sheath tube is connected with the cutting piece, and the second sheath tube and the cutting piece are provided with through inner cavities; the push rod is worn to locate first sheath pipe and cutting piece, and the push rod is connected with the distal end of elasticity woven mesh after wearing out from cutting piece, and the push rod can be relative first sheath pipe along axial displacement to make elasticity woven mesh switch between expansion state and tensile state. Through the arrangement, the elastic woven net can be switched between the unfolding state and the stretching state, and can penetrate through the atrial septum when the elastic woven net is in the stretching state; when the elastic mesh grid is in the unfolded state, the cutting assembly for completing the stoma can be blocked; thereby avoiding the cut tissue from scattering into the body and forming embolism in the process that the cutting assembly retreats from the interatrial septum to the outside of the body.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an interatrial septum ostomy device.
Background
Currently, most heart failure begins with left heart failure, which manifests itself primarily as pulmonary circulation congestion, and for chronic heart failure caused by persistent high pressure in the left atrium, the usual solution is to implant a shunt device in the interatrial space between the left atrium and the right atrium, redistributing the amount of atrial blood and reducing the pressure imbalance in the room.
An interatrial ostomy is a stoma at the patient's interatrial septum, thereby creating a shunt for the left and right heart rooms, used to treat pulmonary hypertension (right-to-left shunt) or left heart failure (left-to-right shunt), and has proven clinically effective.
Conventional interatrial septum ostomy methods, such as balloon interatrial septum ostomy, have a tendency for the myocardial tissue to recoil after the stoma and over time the stoma may shrink or even close completely. In order to solve the problem that the stoma is reduced or even closed, the prior art provides an ostomy bracket, which can respectively disclose an implant for atrial shunt.
However, implants for atrial shunts leave the device in place at the stoma, which can easily lead to thrombosis, or the device falling off, forming an embolism. In addition, the passage is closed and the shunting action is lost, as endothelial attachment can cause the instrument opening to be blocked. In addition, there is a high risk of cutting the endocardial tissue during the procedure by means of a mechanical or high frequency electrotome, which may lead to the cut tissue falling out and forming emboli, for example, during the operation of the intraoperative grasping device, or during retrieval. Furthermore, loosening of the grasping device can easily result in damage to other myocardial tissue if it is cut during the cutting process.
Disclosure of Invention
The invention aims to provide an interatrial septum ostomy device, wherein an elastic woven mesh is arranged at an interatrial septum to recover cut tissues and prevent embolism from easily forming.
In order to achieve the purpose, the invention adopts the following technical scheme:
the present invention provides an interatrial septum ostomy device, comprising:
the far end of the first sheath tube is connected with an elastic braided net;
the second sheath tube is sleeved on the first sheath tube, the distal end of the second sheath tube is connected with a cutting piece, and the second sheath tube and the cutting piece are provided with through inner cavities;
the push rod, wear to locate first sheath pipe with the cutting piece, the push rod follow the cutting piece wear out the back with the distal end of elasticity braided net is connected, the push rod can be relative first sheath pipe is along axial displacement, so that elasticity braided net switches between expansion state and tensile state.
Preferably, the interatrial septum ostomy device further comprises a handle assembly, the push rod and the first sheath are both connected to the handle assembly, the handle assembly is used for controlling the axial movement of the push rod relative to the first sheath.
Preferably, the handle assembly comprises a housing and a knob, the knob is disposed at a proximal end side of the housing, the housing is connected to a proximal end of the first sheath, and the knob is connected to the push rod for driving the push rod to move axially relative to the first sheath.
Preferably, a threaded hole is formed in the knob, a screw rod is connected to the near end of the push rod, and the screw rod is in threaded connection with the threaded hole.
Preferably, the casing includes first casing and second casing, first casing is equipped with first backstop groove, the second casing is equipped with second backstop groove, first casing with behind the second casing lock, first backstop groove with second backstop groove formation annular backstop groove, the knob is equipped with the backstop ring, the backstop ring is located in the annular backstop groove.
Preferably, the interatrial septum ostomy device further comprises a limiting assembly for constraining axial and circumferential movement of the push rod.
Preferably, the limiting assembly comprises a sliding groove and a sliding block, the sliding groove is parallel to the axial direction of the push rod, and the sliding block moves along the sliding groove; one of the sliding groove and the sliding block is arranged on the inner wall of the shell, and the other sliding groove and the sliding block are arranged on the screw rod.
Preferably, the screw rod is provided with a fixing hole, the fixing hole is arranged along the axial direction of the screw rod, and the near end of the push rod is fixed in the fixing hole.
Preferably, the side wall of the screw is provided with a dispensing hole which radially penetrates through the fixing hole, and glue is injected from the dispensing hole so that the push rod is bonded to the side wall of the fixing hole.
Preferably, the push rod is connected with the elastic woven mesh in a welding mode.
The invention has the beneficial effects that:
the invention provides a interatrial septum stoma device which comprises a first sheath, a second sheath and a push rod. Wherein, the distal end of the first sheath tube is connected with the elastic braided net. The second sheath tube is sleeved on the first sheath tube, the distal end of the second sheath tube is connected with the cutting piece, and the second sheath tube and the cutting piece are both provided with through inner cavities; the push rod is worn to locate first sheath pipe and cutting piece, and the push rod is worn out the back from the cutting piece and is connected with the distal end of elasticity mesh grid, and the push rod can be relative first sheath pipe along axial displacement. Through the arrangement, the elastic woven net can be switched between the unfolding state and the stretching state, and can penetrate through the pre-opening hole at the interatrial space when the elastic woven net is in the stretching state; when the elastic mesh grid is in the unfolded state, the cutting assembly for completing the stoma can be blocked; thereby avoiding the cut tissue from scattering into the body and forming embolism in the process that the cutting assembly retreats from the interatrial septum to the outside of the body.
Drawings
FIG. 1 is a schematic view of the structure of a compartmental ostomy device according to an embodiment of the invention;
FIG. 2 is a schematic structural view of a pusher control assembly and a pusher in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a housing, a screw and a push rod according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a housing, a screw and a push rod according to an embodiment of the present invention;
FIG. 5 is a first structural schematic diagram of a cross section of a shell at a chute in an embodiment of the invention;
FIG. 6 is a second structural diagram of a cross section of the housing at the chute in the embodiment of the invention;
FIG. 7 is a schematic structural diagram of a housing according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of a first sheath, a push rod and an elastic mesh grid (in a stretched state) according to an embodiment of the present invention;
FIG. 9 is a schematic structural view of a first sheath, a push rod and an elastic mesh grid (in an unfolded state) according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a cutting knife, a first sheath, a second sheath, a pushing rod and an elastic mesh grid (in an expanded state) according to an embodiment of the present invention.
In the figure:
100. elastic woven mesh; 200. a cutting knife;
1. a second sheath;
2. a first sheath tube;
3. a push rod;
4. a handle assembly; 41. a housing; 411. a chute; 42. a knob; 421. a stop ring; 43. a screw; 431. dispensing holes; 44. a slide block.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present 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 the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
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.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1 to 10, the present embodiment provides a interatrial septum ostomy device including a first sheath 2, a second sheath 1 and a push rod 3. Wherein, the distal end of the first sheath tube 2 is connected with the elastic braided net 100. The second sheath tube 1 is sleeved on the first sheath tube 2, the distal end of the second sheath tube 1 is connected with a cutting piece, and the second sheath tube 1 and the cutting piece are both provided with through inner cavities; the push rod 3 is arranged in the first sheath pipe 2 and the cutting piece in a penetrating mode, the push rod 3 is connected with the far end of the elastic woven net 100 after penetrating out of the cutting piece, and the push rod 3 can move axially relative to the first sheath pipe 2 so that the elastic woven net 100 can be switched between an unfolding state and a stretching state.
In this embodiment, the cutting member includes a cutting knife 200, and the edge of the cutting knife 200 is circular. Optionally, the interatrial septum ostomy device further comprises a third sheath, the second sheath 1 is disposed through the third sheath and can move along the axial direction of the third sheath to drive the cutting knife 200 to move forward and backward, wherein the method for making the ostium by using the cutting knife 200 is well known to those skilled in the art, and therefore, the method for making the ostium is not described herein. It should be noted that the distal and proximal ends are proximal to the operator and distal to the operator in the atrial septum ostomy device.
In this embodiment, the elastic knitted mesh 100 can be switched between the expanded state and the stretched state by the above arrangement. When the elastic netting 100 is in a stretched state, it is stretched in the axial direction and contracted in the radial direction so that it can pass through the atrial septum. When the elastic woven mesh 100 is in an expanded state, the elastic woven mesh shrinks in the axial direction and expands in the radial direction, the outer diameter of the elastic woven mesh 100 in the expanded state is slightly smaller than the inner diameter of the cutting edge, so that the elastic woven mesh can retract into the cavity of the cutting knife, and meanwhile, cut tissues are pulled in and blocked in the cavity of the cutting knife. Thereby avoiding the cut tissue from scattering into the body and forming embolism in the process that the cutting assembly retreats from the interatrial septum to the outside of the body.
Preferably, the interatrial septum ostomy device further comprises a handle assembly 4, the push rod 3 and the first sheath 2 are both connected to the handle assembly 4, and the handle assembly 4 is used for controlling the axial movement of the push rod 3 relative to the first sheath 2. Axial displacement of the pusher 3 relative to the first sheath 2 can be achieved by means of a handle assembly 4.
With regard to the handle assembly 4, in the present embodiment, specifically, the handle assembly 4 includes a housing 41 and a knob 42, the knob 42 is provided on the proximal end side of the housing 41, the housing 41 is connected to the proximal end of the first sheath 2, the knob 42 is connected to the push rod 3, and the knob 42 is used to drive the push rod 3 to move axially relative to the first sheath 2. This setting can turn knob 42 and turn into the axial displacement of push rod 3 relative first sheath pipe 2, can realize the accurate control to push rod 3.
Specifically, a threaded hole is formed in the knob 42, a screw 43 is connected to the proximal end of the push rod 3, and the screw 43 is in threaded connection with the threaded hole. The cooperation of the threaded hole and the threaded rod 43 enables the push rod 3 to be controlled more precisely according to the pitch of the threads.
In other embodiments, the push rod 3 may be replaced by a steel wire that is wound around the knob 42. In this embodiment, the handle assembly 4 further comprises a power member, an output end of the power member is connected to the knob 42, a proximal end of the push rod 3 is fixed and wound around the knob 42, and the push rod 3 can be moved relative to the first sheath 2 when the knob 42 is rotated in a forward direction or a reverse direction. Wherein, the power part can be a servo motor. Firstly, the servo motor has a self-locking function; secondly, the size that push rod 3 impels or withdraws is convenient for control through the turned angle of control servo motor, improves push rod 3 and moves the precision.
In this embodiment, optionally, the housing 41 includes a first housing and a second housing, the first housing is provided with a first stop groove, the second housing is provided with a second stop groove, after the first housing and the second housing are fastened, the first stop groove and the second stop groove form an annular stop groove, the knob 42 is provided with a stop ring 421, and the stop ring 421 is disposed in the annular stop groove. This arrangement enables the knob 42 to be integrally formed, and makes the assembly of the housing 41 and the knob 42 more convenient.
In order to limit the movement of the push rod 3, in this embodiment, the interatrial septum ostomy device further comprises a limiting component for restricting the axial and circumferential movement of the push rod 3. The setting of spacing subassembly makes push rod 3 can only follow axial displacement, can't carry out axial displacement relative first sheath pipe 2 when avoiding push rod 3 to take place circumferential displacement.
Regarding the structure of the limiting assembly, in this embodiment, optionally, the limiting assembly includes a sliding groove 411 and a sliding block 44, the sliding groove 411 is disposed parallel to the axial direction of the push rod 3, and the sliding block 44 moves along the sliding groove 411; one of the slide slot 411 and the slider 44 is provided on the inner wall of the housing 41, and the other is provided on the screw 43. The relative sliding of the screw 43 and the housing 41 can be realized and the rotation of the screw 43 relative to the housing 41 can be avoided by the arrangement of the structure, and the matching of the sliding groove 411 and the sliding block 44 has the advantages of simple structure and easy design and manufacture.
In this embodiment, optionally, two sliding grooves 411 are provided, and are respectively provided in the first casing 41 and the second casing 41; two sliders 44 are provided on the screw 43. The sliding groove 411 can be processed during manufacturing of the housing 41, so that the number of processing procedures is reduced, and the production efficiency is improved. Further, the two sliders 44 are symmetrical with respect to the axis of the screw 43. This arrangement can improve the smoothness of movement of the screw 43. Optionally, the length of the sliding slot 411 is 10-20mm, preferably 12mm, but not limited thereto, and in other embodiments, the length of the sliding slot 411 may also be 3mm or 30 mm.
Regarding the installation relationship between the slider 44 and the screw 43, in the present embodiment, optionally, the screw 43 is provided with an installation hole, and the slider 44 is provided in the installation hole. Specifically, the sliding block 44 may be welded in the mounting hole, and the arrangement of the mounting hole can improve the firmness of the sliding block 44 and the screw 43 on one hand; on the other hand, can also provide the guide for the installation of slider 44, improve assembly efficiency. In other embodiments of this embodiment, the slider 44 and the screw 43 may also be integrally formed.
Preferably, the contact surface of the slider 44 and the slide slot 411 is coated with lubricating grease to improve sliding performance.
Optionally, one end of the sliding block 44 away from the screw 43 is cylindrical or spherical, and the structure of the groove bottom of the sliding groove 411 is consistent with that of the end of the sliding block 44. That is, when the end of the axial section of the slider 44 away from the screw 43 is square, the cross section of the sliding slot 411 is square; when the end of the axial section of the slider 44 away from the screw 43 is semicircular, the cross-sectional shape of the sliding slot 411 is semicircular. Of course, the groove bottom structure of the sliding groove 411 may not coincide with the structure of the slider 44. Illustratively, the end of the slider 44 away from the screw 43 is spherical, that is, the end of the axial section of the slider 44 away from the screw 43 is semicircular, and the cross section of the sliding slot 411 is square. This setting can also make slider 44 and spout 411's fit clearance great, has great accommodation space, can hold more lubricating grease, has prolonged the time that can smoothly slide between slider 44 and the spout 411.
In other embodiments, the sliding block 44 may be disposed in the housing 41 in a protruding manner, the screw 43 is provided with a sliding slot 411, and the sliding slot 411 is formed by two protruding ridges disposed in the screw 43 in a protruding manner, and the protruding ridges are disposed in parallel with the axial direction of the screw 43. This arrangement not only improves the strength of the screw 43 but also defines the sliding track of the slider 44.
Regarding the connection relationship between the push rod 3 and the screw 43, in the present embodiment, optionally, the screw 43 is provided with a fixing hole, the fixing hole is arranged along the axial direction of the screw 43, and the proximal end of the push rod 3 is fixed in the fixing hole. This arrangement secures the connection of the push rod 3 to the screw 43. Further, the center line of the fixing hole is coincident with the axis of the screw 43 to ensure the accuracy of adjustment of the push rod 3.
Further, the sidewall of the screw 43 is provided with a dispensing hole 431 radially penetrating to the fixing hole, and glue is injected from the dispensing hole 431 to adhere the push rod 3 to the sidewall of the fixing hole. This arrangement improves the efficiency and the firmness of the connection of the push rod 3 and the screw 43.
Due to the deformation and other factors, when the pressing force of the locking screw to the push rod 3 is reduced, relative sliding occurs between the push rod 3 and the locking screw, so that the elastic mesh grid 100 cannot be switched to the expanded state or the stretched state. For this reason, in this embodiment, a stop block is connected to the proximal end of the push rod 3, a threaded hole radially penetrating through the screw rod 43 to the fixing hole is formed in the sidewall of the screw rod, after the push rod 3 penetrates into the fixing hole, a locking screw is screwed into the threaded hole and abuts against the push rod 3, and the stop block is located on a side of the locking screw away from the distal end of the push rod 3. This setting can carry out the crimping to push rod 3 on the one hand and fix, when taking place relative slip between locking screw and push rod 3, can carry out the backstop to push rod 3 through the setting of backstop piece and fix, and dual fixed mode has improved the firm degree between push rod 3 and the screw rod 43.
Furthermore, two stop blocks are arranged and are respectively positioned at two sides of the locking screw.
Regarding the material of the push rod 3 and the elastic braided mesh 100, in the present embodiment, the material of the push rod 3 and the material of the elastic braided mesh 100 are both stainless steel. The push rod 3 is connected with the elastic woven mesh 100 by laser welding. This arrangement provides a secure connection between the elastic netting 100 and the push rod 3 at a low cost.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. 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. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An interatrial septum ostomy device, comprising:
the distal end of the first sheath (2) is connected with an elastic braided net (100);
the second sheath tube (1) is sleeved on the first sheath tube (2), the distal end of the second sheath tube (1) is connected with a cutting piece, and the second sheath tube (1) and the cutting piece are provided with through inner cavities;
push rod (3), wear to locate first sheath pipe (2) with the cutting piece, push rod (3) follow the cutting piece wear out the back with the distal end of elasticity woven mesh (100) is connected, push rod (3) can be relative first sheath pipe (2) are along axial displacement, so that elasticity woven mesh (100) switch between expansion state and tensile state.
2. Interatrial septum ostomy device according to claim 1, further comprising a handle assembly (4), the push rod (3) and the first sheath (2) being connected to the handle assembly (4), the handle assembly (4) being adapted for controlling the axial movement of the push rod (3) relative to the first sheath (2).
3. The interatrial septum ostomy device according to claim 2, wherein the handle assembly (4) comprises a housing (41) and a knob (42), the knob (42) being arranged at a proximal side of the housing (41), the housing (41) being connected to a proximal end of the first sheath (2), the knob (42) being connected to the push rod (3) for driving an axial movement of the push rod (3) relative to the first sheath (2).
4. The interatrial septum ostomy device according to claim 3, wherein a threaded hole is opened on the knob (42), a threaded rod (43) is connected to the proximal end of the push rod (3), and the threaded rod (43) is threadedly connected in the threaded hole.
5. Atrial septal ostomy device according to claim 3, wherein the housing (41) comprises a first housing and a second housing, the first housing is provided with a first stop groove, the second housing is provided with a second stop groove, after the first housing and the second housing are fastened, the first stop groove and the second stop groove form an annular stop groove, the knob (42) is provided with a stop ring (421), and the stop ring (421) is arranged in the annular stop groove.
6. Interatrial septum ostomy device according to claim 4, further comprising a stop assembly for restricting axial and circumferential movement of the push rod (3).
7. The interatrial septum ostomy device according to claim 6, wherein the limiting assembly comprises a sliding groove (411) and a sliding block (44), the sliding groove (411) is arranged in parallel with the axial direction of the push rod (3), and the sliding block (44) moves along the sliding groove (411); one of the sliding groove (411) and the sliding block (44) is arranged on the inner wall of the shell (41), and the other one is arranged on the screw rod (43).
8. Atrial septal ostomy device according to claim 4, wherein the screw (43) is provided with a fixation hole arranged in the axial direction of the screw (43), in which fixation hole the proximal end of the push rod (3) is fixed.
9. Atrial septal ostomy device according to claim 8, wherein the side wall of the screw (43) is provided with a glue dispensing hole (431) radially penetrating to the fixing hole, and glue is injected from the glue dispensing hole (431) to adhere the push rod (3) to the side wall of the fixing hole.
10. Atrial septal ostomy device according to any of claims 1-9, wherein the push rod (3) is connected to the elastic mesh grid (100) by welding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111574625.5A CN114145813A (en) | 2021-12-21 | 2021-12-21 | Interatrial septum stoma device |
| PCT/CN2022/128011 WO2023116191A1 (en) | 2021-12-21 | 2022-10-27 | Atrial septostomy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111574625.5A CN114145813A (en) | 2021-12-21 | 2021-12-21 | Interatrial septum stoma device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114145813A true CN114145813A (en) | 2022-03-08 |
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ID=80451684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111574625.5A Pending CN114145813A (en) | 2021-12-21 | 2021-12-21 | Interatrial septum stoma device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114145813A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023116191A1 (en) * | 2021-12-21 | 2023-06-29 | 上海申淇医疗科技有限公司 | Atrial septostomy device |
| CN117752388A (en) * | 2024-02-18 | 2024-03-26 | 北京心祐医疗科技有限公司 | Room space punching device |
-
2021
- 2021-12-21 CN CN202111574625.5A patent/CN114145813A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023116191A1 (en) * | 2021-12-21 | 2023-06-29 | 上海申淇医疗科技有限公司 | Atrial septostomy device |
| CN117752388A (en) * | 2024-02-18 | 2024-03-26 | 北京心祐医疗科技有限公司 | Room space punching device |
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