CN112568971A - Interatrial septum stoma device - Google Patents
Interatrial septum stoma device Download PDFInfo
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- CN112568971A CN112568971A CN201910944329.6A CN201910944329A CN112568971A CN 112568971 A CN112568971 A CN 112568971A CN 201910944329 A CN201910944329 A CN 201910944329A CN 112568971 A CN112568971 A CN 112568971A
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- inner sheath
- interatrial septum
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- elastic support
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- 210000004971 interatrial septum Anatomy 0.000 title claims abstract description 43
- 238000005520 cutting process Methods 0.000 claims abstract description 89
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000001125 extrusion Methods 0.000 claims description 7
- 239000013013 elastic material Substances 0.000 claims description 5
- 230000006386 memory function Effects 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 5
- 230000001746 atrial effect Effects 0.000 claims description 4
- 210000003157 atrial septum Anatomy 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 description 7
- 206010019280 Heart failures Diseases 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
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- 208000005189 Embolism Diseases 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002107 myocardial effect Effects 0.000 description 2
- 229910001000 nickel titanium Inorganic materials 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 208000000059 Dyspnea Diseases 0.000 description 1
- 206010013975 Dyspnoeas Diseases 0.000 description 1
- 206010024119 Left ventricular failure Diseases 0.000 description 1
- 206010030124 Oedema peripheral Diseases 0.000 description 1
- 229920002614 Polyether block amide Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 206010037368 Pulmonary congestion Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 208000035850 clinical syndrome Diseases 0.000 description 1
- 238000002594 fluoroscopy Methods 0.000 description 1
- 208000019622 heart disease Diseases 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
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- 230000001771 impaired effect Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 208000002815 pulmonary hypertension Diseases 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless 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
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
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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
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
-
- 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
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
- A61B2017/00243—Type of minimally invasive operation cardiac
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
-
- 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
- A61B2017/32096—Incision instruments for slowly cutting through tissue, e.g. stent like temporary implants having sharp edges
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (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)
- Pathology (AREA)
- Surgical Instruments (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention provides an interatrial septum ostomy device. The interatrial septum ostomy device comprises a control component and an ostomy component; the control assembly comprises an active part and an inner sheath tube, and the active part is movably arranged in the inner sheath tube in a penetrating way; the stoma assembly comprises a cutting head, the first end of the cutting head is fixedly or movably connected with one end of the driving part, and the second end of the cutting head is connected with the inner sheath tube through an elastic supporting frame; at least one side surface of the cutting head is provided with a blade part. According to the interatrial septum stoma device, the cutting head is connected with the inner sheath tube through the elastic support frame, the driving part is operated to enable the cutting head to move relative to the inner sheath tube, and the elastic support frame can be used for expanding or retracting the cutting head. When the cutting head is opened, the cutting head is opened by the elastic support frame to form the structure of the stoma device, and then the cutting head is used for carrying out the stoma operation on the interatrial septum, thereby finishing the stoma action. The structure of the interatrial septum ostomy device is simplified, the operation is simple, and the safety and the reliability are high.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an interatrial septum ostomy device.
Background
Heart failure (abbreviated as heart failure) is a complex group of clinical syndromes in which the filling of the ventricles or the ability to eject blood is impaired due to any structural or functional abnormality of the heart, and its main clinical manifestations are dyspnea and fatigue (limited movement tolerance), and fluid retention (pulmonary congestion and peripheral edema). Heart failure is a severe and terminal stage of various heart diseases, has high morbidity, and is one of the most serious cardiovascular diseases at present. There are left heart, right heart and whole heart failure according to the occurrence of heart failure.
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.
One of the conventional interatrial septum ostomy methods is to puncture the interatrial septum and then expand the balloon to perform an ostium of the interatrial septum. The myocardial tissue has a tendency to spring back after the stoma and over time the stoma contracts or even closes completely. In order to solve the problem that the stoma is reduced or even closed, the prior art provides an ostomy bracket and respectively discloses an implant for atrial shunt, which is characterized in that after percutaneous interatrial puncture, a shunt device is implanted at the interatrial puncture position by delivering an implant percutaneously so as to keep the shunt opening unobstructed.
Another stoma making method comprises a cutting device and a gripping device, wherein when the instrument makes a stoma to the tissue, the gripping device firstly positions and grips part of the tissue to be cut; then, the cutting device cuts part of the tissue grabbed by the grabbing device through a mechanical or high-frequency electric knife, and the cut part of the tissue is taken out of the body by the grabbing device, so that the stoma is formed.
Both of the above techniques have drawbacks. First, with an atrial shunt implant, the instruments are left behind at the stoma, which can easily lead to thrombosis, or the instruments fall off, forming an embolism. In addition, due to intimal hyperplasia, the instrument opening can be blocked, and the channel is closed and loses the shunting effect. Second, cutting of endocardial tissue by a mechanical or high frequency electrosurgical knife during surgery presents a high risk of the cut tissue becoming dislodged and forming an embolism, for example, during surgery or during post-operative 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
Technical problem to be solved
The invention aims to provide an interatrial septum ostomy device, which solves the problems of complex structure, difficult operation and low safety of the ostomy device in the prior art.
(II) technical scheme
In order to solve the above technical problems, the present invention provides an interatrial septum ostomy device. The interatrial septum ostomy device comprises a control component and an ostomy component; the control assembly comprises an active part and an inner sheath tube, and the active part is movably arranged in the inner sheath tube in a penetrating way; the stoma assembly comprises a cutting head, the first end of the cutting head is fixedly or movably connected with one end of the driving part, and the second end of the cutting head is connected with the inner sheath tube through an elastic supporting frame; at least one side surface of the cutting head is provided with a blade part.
Further, the interatrial septum ostomy device further comprises an outer sheath and a locking assembly, wherein the locking assembly is arranged on the outer sheath to lock the relative position of the control assembly and the outer sheath.
Furthermore, the elastic support frame is made of a metal material with a memory function, the elastic support frame is connected with the cutting head, and the elastic support frame extends out of or retracts into the outer sheath tube to drive the cutting head to be unfolded or folded.
Further, locking Assembly includes first retaining member and first extruded article, first retaining member cover is established keep away from on the sheath pipe the one end of cutting head, interior sheath pipe is worn out first retaining member, first extruded article sets up first retaining member with between the interior sheath pipe, first retaining member with first extruded article cooperation is in order to lock interior sheath pipe with the relative position of sheath pipe.
Further, the first locking member is in threaded connection with the outer sheath tube, the first locking member is a lock nut, and the first pressing member is made of an elastic material.
Furthermore, the outer peripheral surface of the inner sheath tube is also provided with scale marks.
Further, the interatrial septum ostomy device further comprises a handheld assembly, wherein the handheld assembly is arranged at one end, far away from the cutting head, of the outer sheath.
Further, the handheld assembly comprises a second retaining member and a second pressing member, and the second pressing member is connected to the second retaining member to retain the relative position of the inner sheath and the driving member.
Further, the length of the active part is larger than that of the inner sheath.
Further, the elastic support frame and/or the outer sheath tube are/is provided with a developing ring.
(III) advantageous effects
According to the interatrial septum stoma device, the cutting head is connected with the inner sheath tube through the elastic support frame, the driving part is operated to enable the cutting head to move relative to the inner sheath tube, and the elastic support frame can be used for expanding or retracting the cutting head. When the cutting head is spread, namely the cutting head is spread by the elastic support frame to form a structure of the stoma device, and then the cutting head is used for carrying out stoma operation on the interatrial septum, so that the stoma action can be finished; when the elastic support frame is folded, the cutting head is also folded equivalently, so that the interatrial septum can be folded. The structure of the interatrial septum stoma device is greatly simplified, in the specific operation process, a user can complete the actions of stoma, retraction and the like only by controlling the driving piece, the operation is simple, and the safety and the reliability are high.
Drawings
FIG. 1 is a schematic block diagram of a septal ostomy appliance in a stowed state according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of an interatrial septum ostomy device in the process of distraction according to an embodiment of the invention;
FIG. 3 is a schematic block diagram of a septal ostomy appliance in use according to an embodiment of the present invention;
FIG. 4 is a schematic side view of FIG. 3;
figure 5 is a schematic block diagram of another atrial septal ostomy appliance provided by an embodiment of the present invention in use.
The reference numbers illustrate:
1. a driving member; 2. an inner sheath tube; 3. a cutting head; 4. an elastic support frame; 5. an outer sheath tube; 6. a first locking member; 7. a first extrusion; 8. a handle; 9. a developing ring; 10. a second locking member; 11. a second extrusion.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
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.
Referring to fig. 1 to 5 in combination, the present invention provides a septal ostomy appliance. The interatrial septum ostomy device comprises a control component and an ostomy component; the control assembly comprises an active part 1 and an inner sheath tube 2, and one end of the active part 1 movably penetrates through the inner sheath tube 2; the ostomy assembly comprises a cutting head 3, a first end of the cutting head 3 is fixedly or movably connected to the other end of the active component 1, and the other end of the active component 1 is the end of the active component 1 close to the patient in the use state of the interatrial septum ostomy device. The second end of the cutting head 3 is connected with the inner sheath tube 2 through an elastic support frame 4; at least one side of the cutting head 3 is provided with a blade.
According to the interatrial septum stoma device, the cutting head 3 is connected with the inner sheath tube 2 through the elastic support frame 4, and the elastic support frame 4 can expand or retract the cutting head 3 by operating the driving part 1 to enable the cutting head to move relative to the inner sheath tube 2. When the cutting head 3 is spread, namely the cutting head 3 is spread by the elastic support frame 4 to form a structure of the stoma device, and then the cutting head 3 is used for carrying out the stoma operation on the interatrial septum, thereby completing the stoma action of the interatrial septum; when the elastic support frame 4 is retracted, the cutting head 3 is retracted, so that the interatrial septum can be retracted. The structure of the interatrial septum stoma device is greatly simplified, in the specific operation process, a user can complete the actions of stoma, retraction and the like only by controlling the driving part 1, the operation is simple, and the safety and the reliability are high.
Particularly, the control assembly is used for controlling the stoma assembly to complete stoma action or retraction, wherein the control assembly comprises an active part 1 and an inner sheath tube 2, the active part 1 can be a main control wire or a hollow tube, and the active part 1 can movably penetrate through the inner part of the inner sheath tube 2.
The stoma assembly is used for completing specific stoma actions, wherein the stoma assembly comprises a cutting head 3, a first end of the cutting head 3 is rotatably connected to one end of the driving part 1, and a second end of the cutting head 3 is connected to the inner sheath 2 through an elastic support frame 4. Thus, when the driving member 1 moves relative to the inner sheath 2, the elastic support frame 4 is pushed out or retracted from the inner sheath 5, and the cutting head 3 is driven to move, thereby completing the actions such as stoma and retraction.
Wherein, the one end that the first end of cutting head 3 rotationally connects at the initiative 1 means: the cutting head 3 can be extended or retracted by one end of the driving member 1 like an umbrella frame structure, or extended or retracted by one end of the driving member 1 in a folding manner. That is, the cutting head 3 may rotate in the radial direction of the driving member 1, or in the tangential direction of the driving member 1 or in a spiral shape.
The cutting head 3 in this embodiment may be made of a metallic material, such as stainless steel, nitinol, etc. Because the metal material has higher structural strength, the stoma can be well finished. Of course, in other embodiments, the cutting head 3 may be made of other materials, such as a plastic material with higher strength. The cutting head 3 in this embodiment is a metal piece with a sheet structure, so that the purpose of accurate stoma can be achieved. Of course, the cutting head 3 may be a wire-like metal member or the like that can perform the stoma function.
The cutting head 3 may be a three-dimensional net structure after being opened, or may be a support structure formed by a plurality of metal members hinged to each other, as long as the structure can be retracted or opened.
Furthermore, in order to be able to perform the stoma function, at least one side of the cutting head 3 is provided with a blade. The blade portion may be formed on the outer side of the cutting head 3 by means of grinding (i.e. the side of the interatrial septum ostomy device which is closer to the patient in the use state of the device). Of course, in some alternative embodiments, blades may be provided on both sides of the cutting head 3.
Preferably, a blade is provided on the side of the cutting head 3 on the side closer to the patient, which blade opens at least to 1/2 on the side of the cutting head 3.
Further, the cutting head 3 is plural, and the plural cutting heads 3 are provided at intervals along the circumferential direction of the inner sheath tube 2.
For example, the number of the cutting heads 3 may be 4, and the 4 cutting heads 3 are connected to the inner sheath tube 2 at equal intervals by the elastic support frames 4, so that a cross-shaped opening can be formed.
For another example, the number of the cutting heads 3 may be 6, and the 6 cutting heads 3 are connected to the inner sheath tube 2 at equal intervals by the elastic support frames 4, so that a hexagonal star-shaped opening can be formed.
For example, the length of the cutting head 3 may be set to a length of 0.25 cm. As mentioned above, by adjusting the relative position of the inner sheath 2 and the active part 1, an incision with a diameter of at least 0.25-0.5cm can be formed at the corresponding position of the human body.
In this embodiment, the elastic support frame 4 is made of a metal material with a memory function, and the elastic support frame 4 is connected with the cutting head 3 and can drive the cutting head 3 to expand or retract.
Specifically, the first end of the cutting head 3 is hinged with each other and is rotatably connected to one end of the driving member 1, and the second end of the cutting head 3 is connected to the inner sheath 2 through the elastic support frame 4. Wherein, the elastic support frame 4 can be a stent woven by nickel-titanium alloy with memory function. The metal has a memory function, namely, after the elastic support frame 4 is propped up, the metal can be kept in the fixed shape, so that the cutting head 3 is propped up, and the smooth operation of the stoma is ensured.
When the driving part 1 moves relative to the inner sheath tube 2, the driving part 1 can drive the elastic support frame 4 to complete the opening or closing action, and then the elastic support frame 4 can drive the cutting head 3 to complete the opening or closing action.
In a preferred embodiment, the interatrial septum ostomy appliance further comprises an outer sheath 5 and a locking assembly. Can play the effect of the relative position of sheath pipe 2 and outer sheath pipe 5 in the injecing through setting up locking Assembly, and then can keep cutting head 3 steadily, guaranteed the stability of making mouthful operation.
Specifically, the locking assembly comprises a first locking member 6 and a first pressing member 7, the first locking member 6 is sleeved on one end of the outer sheath tube 5 far away from the cutting head 3, the inner sheath tube 2 penetrates out of the first locking member 6, the first pressing member 7 is arranged between the first locking member 6 and the inner sheath tube 2, and the first locking member 6 and the first pressing member 7 cooperate to lock the relative positions of the inner sheath tube 2 and the outer sheath tube 5.
The first presser 7 can be tightly pressed between the first locking member 6 and the inner sheath tube 2 by operating the first locking member 6, thereby achieving the purpose of locking the inner sheath tube 2 and the outer sheath tube 5 to each other.
Wherein, for the convenience of operation, threaded connection is adopted between the first locking member 6 and the outer sheath tube 5, the first locking member 6 is a locking nut, and the first extrusion piece 7 is made of elastic material. For example, an external thread may be formed on the outer circumferential surface of the sheath tube 5, and the first fastening member 6 (i.e., the fastening nut) may be screwed to the sheath tube 5 through the external thread. Thus, the first locking member 6 can be tightly attached to the end of the outer sheath tube 5, and the first extrusion member 7 is extruded, so that the first extrusion member 7 is elastically deformed, and the first extrusion member 7 is compressed to be deformed so as to fill the space formed among the first locking member 6, the inner sheath tube 2 and the end of the outer sheath tube 5, thereby achieving the purpose of locking the inner sheath tube 2 and the outer sheath tube 5.
The outer sheath 5 may be made of a plastic tube with high hardness and good toughness, such as PE, HDPE, Pebax, and the like.
In addition, in order to ensure the connection stability of the cutting head 3 or the elastic support frame 4 and the outer sheath tube 5, a circular structural member is further provided at the end of the outer sheath tube 5, and the cutting head 3 or the elastic support frame 4 can be respectively hinged on the circular structural member.
Furthermore, a scale mark is arranged on the outer peripheral surface of the inner sheath tube 2.
The relative positions of the inner sheath 2 and the outer sheath 5 can be clearly and accurately displayed by setting scale marks. For example, five scale marks can be sequentially marked on the outer peripheral surface of the inner sheath 2, and the relative positions of the cutting head 3 and the elastic support frame 4 can be adjusted by adjusting the relative positions of the inner sheath 2 and the outer sheath 5, so that the stomas with different specifications can be realized.
Further, the interatrial septum ostomy device also comprises a handheld assembly, wherein the handheld assembly is arranged at one end of the outer sheath 5 far away from the cutting head 3; the hand-held assembly includes a second locker 10 and a second pressing member 11, and the second pressing member 11 is coupled to the second locker 10 to lock the relative positions of the inner sheath 2 and the active member 1.
Second retaining member 10 second extruded piece 11 the handheld subassembly of second retaining member 10 is used for making things convenient for operating personnel to this interatrial septum ostomy device's the holding, and the one end of keeping away from cutting head 3 on sheath pipe 2 including the setting of second retaining member 10 in the handheld subassembly is connected with second extruded piece 11 on it, second extruded piece 11 and interior sheath pipe 2 intercommunication. Thus, when the second locker 10 and the second pressing member 11 are locked, the relative positions of the inner sheath 2 and the active member 1 can be locked.
Further, the hand-held assembly is locked with the active member 1 by using an elastic material, or by using a locking assembly including a second locker 10 and a second pressing member 11, the second pressing member 11 being made of an elastic material.
Still further, the length of the active part 1 is greater than or equal to the length of the inner sheath 2. The purpose of this is to be able to adjust the angle at which the cutting head 3 is spread by adjusting the position of the driving member 1 relative to the inner sheath 2. In this embodiment, the inner sheath tube 2 is movably disposed inside the outer sheath tube 5, and the driving member 1 and the inner sheath tube 2 are adjusted to drive the cutting head 3 to move to realize the stoma with different specifications.
Still further, the developing ring 9 is arranged on the elastic support frame 4 and/or the outer sheath tube 5 at one end facing the cutting head 3, and the developing ring 9 can ensure that medical personnel can determine the lesion part of the patient by referring to the position of the outer sheath tube 5 in X-ray fluoroscopy in the operation process.
When using the interatrial septum ostomy device, the following steps may be followed:
firstly, after a room puncture needle is adopted to puncture the fossa ovalis successfully, the outer sheath tube 5 and the inner sheath tube 2 are reserved;
then, the stoma assembly is delivered to the interatrial septum puncture site along the outer sheath tube 5;
then, move inner sheath pipe 2 forward or move outer sheath pipe 5 backward, and then drive and make the mouth subassembly action and make mouth subassembly and interatrial interval in close contact with, further impel about 2 ~ 3cm, accomplish interatrial interval and make the mouth.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. An interatrial septum ostomy appliance comprising a control assembly and an ostomy assembly;
the control assembly comprises an active part (1) and an inner sheath tube (2), and the active part (1) is movably arranged in the inner sheath tube (2) in a penetrating way;
the stoma assembly comprises a cutting head (3), the first end of the cutting head (3) is fixedly or movably connected with one end of the driving part (1), and the second end of the cutting head (3) is connected with the inner sheath tube (2) through an elastic support frame (4);
at least one side surface of the cutting head is provided with a blade part.
2. Interatrial septum ostomy device according to claim 1, further comprising an outer sheath (5) and a locking assembly arranged on the outer sheath (5) to lock the relative position of the control assembly and the outer sheath (5).
3. The interatrial septum ostomy device according to claim 2, wherein the elastic support frame (4) is made of a metal material with a memory function, the elastic support frame (4) is connected with the cutting head (3), and the elastic support frame (4) extends out or retracts into the sheath (5) to drive the cutting head (3) to expand or retract.
4. The atrial septum ostomy device according to claim 3, wherein the locking assembly comprises a first locking member (6) and a first pressing member (7), the first locking member (6) is sleeved on the outer sheath (5) at an end away from the cutting head (3), the inner sheath (2) passes out of the first locking member (6), the first pressing member (7) is disposed between the first locking member (6) and the inner sheath (2), and the first locking member (6) cooperates with the first pressing member (7) to lock the relative position of the inner sheath (2) and the outer sheath (5).
5. The interatrial septum ostomy device according to claim 4, wherein the first locking member (6) is threaded with the outer sheath (5), the first locking member (6) being a lock nut, the first extrusion (7) being made of an elastic material.
6. Interatrial septum ostomy device according to claim 1, wherein a scale mark is further provided on the outer circumferential surface of the inner sheath (2).
7. Interatrial septum ostomy appliance according to claim 3, further comprising a hand-held assembly arranged on the sheath (5) at an end remote from the cutting head (3).
8. Atrial septal ostomy according to claim 7, wherein the hand-held assembly comprises a second retaining member (10) and a second pressing member (11), the second pressing member (11) being connected to the second retaining member (10) to retain the relative position of the inner sheath (2) and the active member (1).
9. Interatrial septum ostomy device according to claim 1, wherein the active piece (1) has a length greater than the length of the inner sheath (2).
10. Interatrial septum ostomy device according to claim 3, characterised in that a developer ring (9) is provided on the elastic support frame (4) and/or the outer sheath (5).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910944329.6A CN112568971B (en) | 2019-09-30 | 2019-09-30 | Interatrial septum ostomy device |
| PCT/CN2020/119179 WO2021063381A1 (en) | 2019-09-30 | 2020-09-30 | Atrial septostomy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910944329.6A CN112568971B (en) | 2019-09-30 | 2019-09-30 | Interatrial septum ostomy device |
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| Publication Number | Publication Date |
|---|---|
| CN112568971A true CN112568971A (en) | 2021-03-30 |
| CN112568971B CN112568971B (en) | 2024-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910944329.6A Active CN112568971B (en) | 2019-09-30 | 2019-09-30 | Interatrial septum ostomy device |
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| CN (1) | CN112568971B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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