Interventional suturing device

Abstract

The utility model provides an interventional suture device, which relates to the technical field of medical instruments, and comprises a front end part, a rear end part, a plurality of support structures and a plurality of puncture needles, the support structures can be bent under stress, the puncture needles are hollow, and suture lines capable of passing through are arranged in the puncture needles; the front section part of the main tube body is connected with the front end part, a plurality of threading cavities are formed in the main tube body, the number of the threading cavities is the same as that of the puncture needles, and the puncture needles are located in the threading cavities and can slide in the threading cavities; the fixed handle is arranged at the middle section part of the main tube body and is provided with a puncture control knob; the sliding handle is connected to the main tube body and located behind the fixed handle, the distance between the sliding handle and the fixed handle can be adjusted by rotating the puncture control knob, a suture shaft is arranged in the sliding handle, and the rear end of the suture is located on the suture shaft; and the check valve is arranged at the tail end of the main pipe body.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an interventional suturing device. Background Art

[0002] The foramen ovale is a physiological passage in the atrial septum during the embryonic period. After birth, as left atrial pressure increases and pulmonary artery resistance decreases, the septum primum and septum secundum converge and fuse. In most cases, the foramen ovale closes spontaneously within a year of birth. In those who fail to close, a potential passage forms in the middle of the atrial septum, known as a patent foramen ovale (PFO).

[0003] Patent foramen ovale (PFO) was previously considered a benign condition and harmless. However, recent advances in clinical research have led experts to agree that PFO is a cause of unexplained stroke, migraines, and paradoxical embolism. Therefore, PFO occlusion or closure is of great significance.

[0004] Currently, existing devices usually use a straight suture method to close the foramen ovale. For example, the utility model patent CN209611222U mentions a method of closing by suturing. However, this method has obvious defects. It is difficult to completely close the foramen ovale by straight suture, and the needle angle and needle distance have extremely high requirements, which increases the difficulty of operating the instrument. Utility Model Content

[0005] The purpose of the utility model is to provide an interventional suturing device to solve the problems of poor suturing effect and greater difficulty in operation of the current devices.

[0006] In order to solve the above problems, the present invention first provides an interventional suturing device, comprising: a front end portion, provided with multiple support structures and multiple puncture needles, the support structure can bend under force, the puncture needle is hollow inside, and a suture that can pass through it is installed therein; a main body, the front section of which is connected to the front end portion, and a plurality of threading cavities are provided therein, the number of the threading cavities is the same as the number of the puncture needles, the puncture needles are located inside the threading cavities and can slide therein; a fixed handle is provided at the middle section of the main body, which is provided with a puncture control knob; a sliding handle is connected to the main body and is located behind the fixed handle, and the distance between it and the fixed handle can be adjusted by rotating the puncture control knob, a suture shaft is provided therein, and the rear end of the suture is located on the suture shaft; an anti-reverse valve is provided at the tail end of the main body.

[0007] With such a configuration, the device can be loaded with multiple puncture needles, and the needles can be removed and sutured at the same time, which can completely close the unclosed foramen ovale. Compared with the "one-line" suturing method, the surgical effect is greatly improved; the operation is simple and the control is convenient. The puncture needle can be controlled by rotating the puncture control knob to control the needle removal and retraction, which reduces the difficulty of operating the device and solves the problems existing in the prior art.

[0008] Furthermore, the fixed handle includes a fixed handle cover and a fixed block. A limiting groove is provided inside the fixed handle cover. The fixed block is installed in the limiting groove, and the fixed block is inserted into the outside of the main body and fixedly connected to it.

[0009] Furthermore, a threaded rod is provided inside the sliding handle, and the puncture control knob is mounted on the threaded rod and can be rotated thereon to control the sliding handle to move forward and backward.

[0010] Furthermore, a guide is provided inside the sliding handle, and a plurality of threading holes are provided on the guide. The guide is located at the front end of the suture shaft. The suture thread led out from the suture shaft can pass through the threading holes and then enter the puncture needle accordingly.

[0011] Furthermore, the threaded rod is provided with a mounting hole, a limiting slider is installed in the mounting hole, the fixed handle cover is provided with a limiting slot, and the limiting slider is configured to be able to slide in the limiting slot.

[0012] Furthermore, the sliding handle is provided with a detachable cover.

[0013] Furthermore, a puncture hole is provided at the front end of the main body, and the puncture needle is configured to be able to pass through the puncture hole.

[0014] Furthermore, a needle hole is provided at the front end of the support structure, and the size of the puncture needle is configured to be able to pass through the needle hole.

[0015] Furthermore, the number of the puncture needles is 4. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of an interventional suturing device provided in an embodiment of the present invention;

[0018] Figure 2 A cross-sectional view of an interventional suturing device provided in an embodiment of the present utility model;

[0019] Figure 3 A partial enlarged view of the main body provided in an embodiment of the utility model;

[0020] Figure 4 Exploded view of the interventional suturing device provided in an embodiment of the present invention (I);

[0021] Figure 5 Exploded view of the interventional suturing device provided in an embodiment of the present invention (II);

[0022] Figure 6 A schematic diagram of the internal structure of the sliding handle in the suturing state provided by an embodiment of the utility model;

[0023] Figure 7 Schematic diagram of a guide wire passing through the foramen ovale provided in an embodiment of the present invention;

[0024] Figure 8 A schematic diagram of a suturing device provided by an embodiment of the present invention close to the atrial septum;

[0025] Figure 9 A schematic diagram of an expanded support structure provided by an embodiment of the present utility model;

[0026] Figure 10 A schematic diagram of removing a puncture needle provided in an embodiment of the present utility model;

[0027] Figure 11 A schematic diagram showing the changes in the sliding handle for removing the puncture needle provided in an embodiment of the present utility model;

[0028] Figure 12 A schematic diagram of a suture thread pusher provided in an embodiment of the present invention;

[0029] Figure 13 A schematic diagram of a state where the suture provided by an embodiment of the present invention is placed into the main tube;

[0030] Figure 14 A schematic diagram of the puncture needle retraction provided in an embodiment of the present utility model;

[0031] Figure 15 A schematic diagram of the change of the needle-retracting sliding handle of the puncture needle provided in an embodiment of the utility model;

[0032] Figure 16 A schematic diagram of the suture line state after the interventional suturing device provided in an embodiment of the present invention is withdrawn;

[0033] Figure 17 This is a schematic diagram of the state of closing the foramen ovale after the suture provided in an embodiment of the present invention is tightened.

[0034] Description of reference numerals:

[0035] 000-guidewire; 010-sheath;

[0036] 100 - front end; 110 - support structure; 111 - needle hole; 120 - puncture needle; 130 - suture thread;

[0037] 200-main body; 210-threading cavity; 220-puncture hole;

[0038] 300-fixed handle; 310-puncture control knob; 320-fixed handle cover; 321-limiting groove; 322-limiting slide groove; 330-fixed block;

[0039] 400 - sliding handle; 410 - suture shaft; 420 - threaded rod; 421 - mounting hole; 422 - limit slider; 430 - guide member; 431 - threading hole; 440 - cover;

[0040] 500-Anti-reverse valve. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following describes in detail the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] In order to solve the problems of poor suturing effect and difficult operation of current devices, this embodiment provides an interventional suturing device, such as Figure 1 and 2 As shown, it includes: a front end, a main body, a fixed handle, a sliding handle and an anti-reverse valve. The front end is provided with multiple support structures and multiple puncture needles. In this embodiment, the number of the support structures is 4. The support structures can be bent under the action of external force, such as Figure 3 As shown, when in use, the multiple support structures can be unfolded, the interior of the puncture needle is hollow, and a suture thread that can pass through is provided therein.

[0043] The front section of the main body is connected to the front end, and a fixed handle, a sliding handle and an anti-reverse valve are installed on it in sequence in the rear direction; there are 4 threading cavities inside the main body, and a slidable puncture needle is installed inside each threading cavity.

[0044] The fixed handle is fixedly connected to the main body, and is equipped with a puncture control knob that can adjust the sliding handle. The distance between the sliding handle and the fixed handle can be adjusted by rotating the puncture control knob. A suture shaft is provided inside the sliding handle, and the rear end of the suture is wound around the suture shaft. The suture can be released or retracted by controlling the rotation of the suture shaft. An anti-reverse valve is provided at the tail end of the main body to prevent blood from flowing out of the main body.

[0045] Specifically, if Figure 4 and 5 As shown, the fixed handle includes a fixed handle cover and a fixed block. A limiting groove is provided inside the fixed handle cover, and the fixed block is installed in the limiting groove. The center of the fixed block is sleeved on the outside of the main body.

[0046] A threaded rod is provided inside the sliding handle, and a puncture control knob is installed on the threaded rod. The knob can cooperate with the thread on the rod to control the sliding handle to move forward and backward by rotating it, thereby realizing the needle withdrawal and retraction of the puncture needle.

[0047] Preferably, a mounting hole is provided on the threaded rod, a limiting slider is installed in the mounting hole, and a limiting slot is provided on the fixed handle cover, and the limiting slider can slide in the limiting slot.

[0048] Optionally, in order to ensure smooth passage of the suture thread, a guide is provided at the front end of the suture shaft, and the guide is provided with 4 threading holes. The suture thread led out from the suture shaft can pass through the threading holes and then be inserted into the puncture needle accordingly.

[0049] Optionally, in order to enable manual advancement of the suture, a detachable cover is provided on the sliding handle, such as Figure 6 As shown, when the suture line needs to be pushed by hand, it is very convenient to remove the cover.

[0050] Preferably, Figure 9 As shown, the front end of the main body is provided with a puncture hole, and the puncture needle can pass through the puncture hole. The front end of the supporting structure is provided with a needle hole, and the puncture needle can pass through the needle hole.

[0051] When performing foramen ovale closure surgery, the operating steps for using this device are as follows;

[0052] First, pass the guide wire through the foramen ovale. Figure 7 As shown, the sheath is placed along the guide wire to the right atrium, and the interventional suturing device is passed through the sheath to the right atrium and close to the atrial septum. Figure 8 As shown, the guide wire and sheath are commonly used devices in this field and will not be described in detail here.

[0053] The front end support structure is extended out of the sheath, and the force is applied to open it and fit the atrial septum. Figure 9 As shown;

[0054] By rotating the puncture control knob, the puncture needle is pushed out from the puncture hole, so that the puncture needle passes through the atrial septum. Figure 10 As shown, the changes of the sliding handle during the puncture needle removal process are as follows Figure 11 As shown;

[0055] The cover can be opened to manually push the suture thread out a certain distance, such as Figure 12 As shown, the suture is pushed out of the puncture needle for suturing;

[0056] Then place all four sutures into the main tube. Figure 13 As shown; retract the suture by rotating the puncture control knob and make the puncture needle exit the atrial septum, as shown Figure 14 As shown, during the needle closing process, the changing state of the sliding handle is as follows Figure 15 As shown;

[0057] Remove the interventional suturing device from the sheath and remove it from the body. Figure 16 As shown;

[0058] Tighten the suture and tie a knot to complete the foramen ovale suture operation. Figure 17 As shown, when tightening and tying the knot, only the main body can push the knot locker at the center of the "cross" suture to facilitate knotting.

[0059] This device can be loaded with multiple puncture needles and can remove the needles at the same time, that is, the four suture needles in this embodiment can suture at the same time, which can completely close the unclosed foramen ovale, greatly improving the effect of the operation; it is simple to operate and easy to control. The puncture needle can be controlled to be removed and retracted by rotating the puncture control knob, which reduces the difficulty of operating the device; in addition, the cover of the sliding handle can be removed, which is convenient for manual thread pushing and retracting.

[0060] Although the present invention is disclosed as above, it is not limited thereto. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope defined by the claims.

[0061] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0062] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0063] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An interventional suturing device, characterized in that: include: The front end portion is provided with a plurality of support structures and a plurality of puncture needles, wherein the support structures can be bent under force, and the puncture needles are hollow inside and equipped with sutures that can pass through them; The main body, the front section of which is connected to the front end portion, is provided with a plurality of threading cavities therein, the number of the threading cavities being the same as the number of the puncture needles, and the puncture needles are located inside the threading cavities and can slide therein; A fixed handle is provided at the middle portion of the main tube body and is provided with a puncture control knob; a sliding handle connected to the main body and located behind the fixed handle, the distance between the sliding handle and the fixed handle being adjustable by rotating the puncture control knob, a suture shaft being provided inside the sliding handle, the rear end of the suture being located on the suture shaft; The anti-reverse valve is arranged at the tail end of the main pipe.

2. The interventional suturing device according to claim 1, characterized in that: The fixed handle includes a fixed handle cover and a fixed block. A limiting groove is provided inside the fixed handle cover. The fixed block is installed in the limiting groove, and the fixed block is sleeved on the outside of the main body and fixedly connected thereto.

3. The interventional suturing device according to claim 2, characterized in that: A threaded rod is provided inside the sliding handle, and the puncture control knob is mounted on the threaded rod and can be rotated thereon to control the sliding handle to move forward and backward.

4. The interventional suturing device according to claim 3, characterized in that: A guide is also provided inside the sliding handle, and a plurality of threading holes are provided on the guide. The guide is located at the front end of the suture shaft. The suture thread led out from the suture shaft can pass through the threading holes and then enter the puncture needle.

5. The interventional suturing device according to claim 4, characterized in that: The threaded rod is provided with a mounting hole, a limiting slider is installed in the mounting hole, the fixed handle cover is provided with a limiting sliding groove, and the limiting slider is configured to be able to slide in the limiting sliding groove.

6. The interventional suturing device according to claim 4, characterized in that: The sliding handle is provided with a detachable cover.

7. The interventional suturing device according to any one of claims 1 to 6, characterized in that: A puncture hole is provided at the front end of the main body, and the puncture needle is configured to be able to pass through the puncture hole.

8. The interventional suturing device according to claim 7, characterized in that: A needle hole is provided at the front end of the support structure, and the size of the puncture needle is configured to be able to pass through the needle hole.

9. The interventional suturing device according to claim 7, characterized in that: The number of the puncture needles is 4.

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