Vascular suturing device

Abstract

The present application provides a kind of blood vessel suturing device, belong to medical instrument technical field, blood vessel suturing device, comprising: shell body;Piston, hard needle is arranged on piston, is driven to advance or extract towards host, to complete blood vessel suturing work;Suture cutting mechanism, including: with the blade of piston linkage setting;Blade is set in the proximal position of blood vessel suturing device towards the direction of piston.By the above suture cutting mechanism, the suture cutting window of the existing blood vessel suturing device can be avoided to be set in the position close to the middle section of suture device, need to be wound around the rear part of instrument after suture, then wind to cutting knife mouth, can cut off suture after pulling suture, lead to the problem of operation safety hidden danger.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a vascular suture device. Background Technology

[0002] In the field of vascular suturing technology, a rigid needle is typically used to puncture the blood vessel, allowing the connecting suture to pass through the vessel wall for suturing. The rigid needle is then withdrawn and separated from the suture. During this process, the suture needs to be cut after vascular suturing. In existing technologies, the suture cutting window is located near the middle of the suture device. Current vascular suturing devices require the suture to be wrapped around the rear of the instrument and then around to the cutting edge before being pulled to cut the suture. The following problems may arise during this operation: 1. Limited by the structural complexity of the device itself. After the piston is withdrawn after suturing, the suture needs to be wound forward in the opposite direction to the original operation, requiring additional reverse straightening of the suture. During this process, the suture may become entangled in the outer shell or other protruding structures, causing operational difficulties or incorrect suture cutting position. 2. The suture cutting method used in the above-mentioned vascular suturing devices requires operators to remember many operational steps, resulting in high operational difficulty. 3. Because the cutting position is directly aligned with the suture, the change in cutting position after the suture is wound around will cause the cutting position to change from the original suture position to the connecting suture position. The change in the cutting position mentioned above makes it easy for the suture connected to the distal end of the piston to carry other structures when the piston is withdrawn. This suture will generate additional resistance in the internal channel of the sheath and may even become stuck with other parts or structures, causing the piston and connecting suture to bear additional stress and potentially leading to connection failure. Therefore, those skilled in the art need a vascular suturing device that allows medical operators to cut the suture simply by pulling it radially after withdrawing the piston, without requiring additional steps. This would effectively reduce the problems of misoperation and incorrect suture cutting position, and improve suture cutting efficiency. Summary of the Invention

[0003] Therefore, this invention provides a vascular suturing device with a suture cutting function. To address the problem that existing vascular suture devices have suture cutting windows located near the middle of the device, requiring the suture to be wrapped around the rear of the instrument and then around the cutting edge before being pulled to cut the suture, leading to operational safety hazards, this invention provides a vascular suturing device comprising:

[0004] outer shell;

[0005] A piston, on which a rigid needle is mounted, is driven to move toward or withdraw from the host to complete the vascular suturing.

[0006] The suture cutting mechanism includes: a blade that is linked to the piston; the blade is positioned at the proximal end of the vascular suture device facing the piston.

[0007] Optionally, the outer casing includes an upper casing and a lower casing; the suture cutting mechanism is disposed in the upper casing and / or the lower casing.

[0008] Optionally, the suture cutting mechanism is disposed in the upper housing;

[0009] With the piston housed within the outer casing, the piston prevents the blade from ejecting.

[0010] As the piston is driven to be withdrawn from the housing, the piston releases its restraint on the blade, and the blade, under the influence of its own gravity, extends toward the connecting seam to cut the connecting seam.

[0011] Optionally, the suture cutting mechanism further includes a driving component for driving the blade to extend toward the connecting suture;

[0012] When the piston is housed within the outer casing, the piston prevents the blade from ejecting; as the piston is driven to be withdrawn from the outer casing, the piston releases its restraint on the blade, and the driving component drives the blade to extend toward the connecting seam to cut the connecting seam.

[0013] Optionally, the suture cutting mechanism is disposed in the lower housing.

[0014] Optionally, the blades respectively disposed in the upper housing and the lower housing are arc-shaped structures, and the blades in the upper housing and the lower housing form a circular cutting blade structure.

[0015] Optionally, the driving component is a compression spring or a spring plate, one end of which is connected to the upper housing and / or the lower housing, and the other end is connected to the blade to drive the blade to move toward the connecting seam.

[0016] Optionally, the driving component is a magnetic driving assembly, which drives the blade to pop out using magnetic field force.

[0017] Optionally, the magnetic drive assembly includes a magnetic element disposed on the housing, wherein the blade is positioned near the magnetic element and has the same magnetism as the magnetic element.

[0018] Optionally, the inner wall of the outer casing is provided with a receiving groove for accommodating the blade.

[0019] Optionally, the inner wall of the outer casing is provided with receiving grooves for accommodating the blade and the drive component, and the receiving grooves are respectively adapted to the shapes of the blade and the drive component.

[0020] Optionally, the blade has a head and a connecting portion, the head and the connecting portion forming an L-shaped structure or a straight blade structure; the connecting portion is connected to the driving component for transmission.

[0021] Optional,

[0022] The blade has a V-shaped or serrated cut to prevent the suture from slipping relative to the blade; and / or,

[0023] The blade is perpendicular to the suture line of the vascular suture device, or the blade has an angle of inclination with the central axis of the vascular suture device; and / or,

[0024] The blade is an elastic structure; when the blade is not ejected, it is limited by the piston and compressed within the housing; when the piston is ejected by drive, the blade extends to cut the seam.

[0025] The technical solution of this invention has the following advantages:

[0026] 1. The vascular suturing device provided by the present invention includes: an outer shell; a piston on which a rigid needle is disposed, which is driven to move toward or withdraw toward the host to complete the vascular suturing work; and a suture cutting mechanism including: a blade that is linked to the piston; the blade is disposed at a proximal position of the vascular suturing device toward the piston.

[0027] In this invention, the suture cutting mechanism eliminates the need for additional steps by the operator. The blade is automatically ejected to cut the suture as the medical worker withdraws the piston. This structure eliminates the need to traverse the suture forward and straighten it backward after removing the piston. This avoids the problem of the cutting position changing from the original suture location to the connecting suture location when the cutting position changes, thus preventing additional resistance to the suture within the sheath and potential jamming with other parts or structures. Furthermore, the vascular suturing device of this invention effectively reduces operational errors and incorrect suture cutting positions, and improves suture cutting efficiency.

[0028] 2. The vascular suturing device provided by the present invention, wherein the suture cutting mechanism is disposed in the upper housing; when the piston is housed in the outer housing, the piston prevents the blade from ejecting; during the process of the piston being driven out of the outer housing, the piston releases the restriction on the blade, and the blade extends toward the connecting suture under the influence of its gravity to cut the connecting suture.

[0029] By incorporating the suture cutting mechanism within the upper housing, the blade springs out under its own weight to cut the connecting suture, offering advantages such as simple and reliable structure.

[0030] 3. The vascular suturing apparatus provided by the present invention further includes a suture cutting mechanism: a driving component for driving the blade to extend toward the connecting suture; in the state where the piston is housed in the outer casing, the piston prevents the blade from ejecting; during the process of the piston being driven out of the outer casing, the piston releases the restriction on the blade, and the driving component drives the blade to extend toward the connecting suture to cut the connecting suture.

[0031] In this invention, during the process of the piston being withdrawn from the outer casing, the blade is driven by the driving component to cut the connecting suture, which can effectively ensure that the blade can be ejected accurately and reliably, thus ensuring the reliability of the surgical instrument. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 This is an explosion diagram of the vascular suture device provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram showing the position of the blade housed in the upper housing by a spring, provided in an embodiment of the present invention.

[0035] Figure 3 A schematic diagram of the blade position when the blade is ejected from the upper housing, as provided in an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of a blade structure housed in a receiving groove according to an embodiment of the present invention;

[0037] Figure 5A schematic diagram of the structure of the blade that pops out under the drive of a compression spring to cut the connecting seam, provided in an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram showing the position of the blade housed within the lower housing, provided in an embodiment of the present invention.

[0039] Figure 7 This is a schematic diagram showing the position of the blade in a retracted state within the receiving groove of the lower housing, as provided in an embodiment of the present invention.

[0040] Figure 8 This is a schematic diagram showing the position of the blade in the ejected state within the receiving groove of the lower housing, as provided in an embodiment of the present invention.

[0041] Figure 9 This is a schematic diagram of the structure of the blade extending out of the receiving groove under the drive of a magnetic component, as provided in an embodiment of the present invention.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Sheath; 2. Connecting suture; 3. Piston; 4. Hard needle; 5. Trigger; 6. Blade; 7. Upper housing; 8. Lower housing; 9. Compression spring; 10. Magnetic component; 11. Receiving groove; 12. Blade head; 13. Connecting part. Detailed Implementation

[0044] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] Example 1

[0047] This embodiment provides a vascular suturing device, such as Figure 1 As shown, it includes:

[0048] The outer casing includes: an upper casing 7 and a lower casing 8;

[0049] A sheath 1, which houses a needle and sutures to form an access channel for passing through the host blood vessel wall; the sutures include: a suture thread and a connecting suture 2;

[0050] Piston 3, on which a rigid needle 4 is provided, is driven to move toward or withdraw from the host to complete the vascular suturing work;

[0051] Trigger 5 is drivenly connected to the sheath 1 to drive the piston 3 out of the outer casing;

[0052] The suture cutting mechanism includes: a blade 6 that is linked to the piston 3; the blade 6 is located at the proximal end of the vascular suture device toward the piston 3, and during the process of the piston 3 being driven to be pulled out of the outer casing, the blade 6 cuts the connecting suture 2 at the position close to the suture suture.

[0053] In this embodiment, the suture cutting mechanism is disposed on the upper housing 7. The suture cutting mechanism includes: a blade 6, and a driving component for driving the blade 6 to extend toward the connecting suture 2, the driving component being a compression spring 9; moreover, the blade 6 is fixedly connected to the compression spring 9 during sheet metal processing. Of course, in this embodiment, the connection method between the blade 6 and the compression spring 9 is not specifically limited, and the two can also be fixed by other methods such as bonding.

[0054] like Figure 2 and Figure 4 As shown, with the piston 3 housed within the outer casing, the piston 3 prevents the blade 6 from ejecting; as Figure 3 and Figure 5 As shown, during the process of the piston 3 being driven to withdraw from the outer casing, the piston 3 releases its restraint on the blade 6, and the compression spring 9 drives the blade 6 to extend toward the connecting suture 2 to cut the connecting suture 2. One end of the compression spring 9 is connected to the upper housing 7, and the other end is connected to the blade 6 to drive the blade 6 to move toward the connecting suture 2. In this embodiment, the blade 6 is perpendicular to the suture of the vascular suture device.

[0055] Of course, this embodiment does not specifically limit the specific structure of the driving component. The driving component in this embodiment can also be a spring sheet or an elastic rubber part.

[0056] In addition, such as Figure 4 and Figure 5 As shown, the inner wall of the outer casing is also provided with a receiving groove 11 for accommodating the blade 6 and the driving component, and the receiving groove 11 has an L-shaped structure. The blade 6 and the driving component are both disposed in the receiving groove 11. The blade 6 has a blade head 12 and a connecting part 13, which form an L-shaped structure; one end of the compression spring 9 is connected to the upper housing 7, and the other end is connected to the connecting part 13 of the blade 6 to drive the blade 6 to move toward the connecting seam 2.

[0057] Of course, this embodiment does not limit the structure of the receiving groove 11. In other embodiments, the receiving groove 11 may also be other shapes that are adapted to the shape of the blade 6 and the drive assembly.

[0058] Of course, this embodiment does not limit the blade cutting structure of the blade 6. In other embodiments, the blade cutting of the blade 6 can be a straight line, a V-shape, or a serrated structure.

[0059] Of course, this embodiment does not specifically limit the specific structure of the blade 6. In other embodiments, the blade 6 can also be a straight blade structure, and the connecting part 13 of the blade 6 with the straight blade structure is connected to the driving component for transmission.

[0060] Of course, this embodiment does not specifically limit the specific ejection method of the blade 6. In other embodiments, the blade 6 is an elastic structure. When the blade 6 is not ejected, the blade 6 is limited by the piston 3 and compressed in the receiving groove 11. When the piston 3 is driven to eject, the blade 6 extends to cut the seam.

[0061] Of course, this embodiment does not specifically limit whether the blade 6 is perpendicular to the suture line of the vascular suture device. In other embodiments, the blade 6 and the suture line of the vascular suture device have an inclination angle; the inclination angle is 30 degrees, 45 degrees, 60 degrees, etc.

[0062] Of course, this embodiment does not specifically limit whether the trigger 5 is provided. In other embodiments, the operator can also directly pull the piston 3 to drive the piston 3 to move.

[0063] Example 2

[0064] This embodiment provides a vascular suturing device, such as Figure 1 As shown, it includes:

[0065] The outer casing includes: an upper casing 7 and a lower casing 8;

[0066] A sheath 1, which houses a needle and sutures to form an access channel for passing through the host blood vessel wall; the sutures include: a suture thread and a connecting suture 2;

[0067] Piston 3, on which a rigid needle 4 is provided, is driven to move toward or withdraw from the host to complete the vascular suturing work;

[0068] Trigger 5 is drivenly connected to the sheath 1 to drive the piston 3 out of the outer casing;

[0069] The suture cutting mechanism includes: a blade 6 that is linked to the piston 3; the blade 6 is located at the proximal end of the vascular suture device toward the piston 3, and during the process of the piston 3 being driven to be pulled out of the outer casing, the blade 6 cuts the connecting suture 2 at the position close to the suture suture.

[0070] In this embodiment, the suture cutting mechanism is disposed on the lower housing 8. The driving component is a magnetic driving assembly, which drives the blade 6 to eject via a magnetic field. The magnetic driving assembly includes a magnetic element 10 disposed on the outer housing, and the position of the blade 6 near the magnetic element 10 has the same magnetism as the magnetic element 10.

[0071] With the piston 3 housed within the outer casing, the piston 3 prevents the blade 6 from ejecting; as... Figure 9 As shown, during the process of the piston 3 being driven to be drawn out of the outer casing, the piston 3 releases the restriction on the blade 6. Under the action of the magnetic force of the magnetic component 10, the blade 6 extends toward the connecting seam 2 to cut the connecting seam 2.

[0072] like Figure 9 As shown, the inner wall of the outer casing is also provided with a receiving groove 11 for accommodating the blade 6 and the driving component. Both the blade 6 and the driving component are disposed within the receiving groove 11. The blade 6 has a blade head 12 and a connecting portion 13, which form an L-shaped structure. In this invention, the connecting portion 13 has the same magnetic properties as the magnetic component 10, which is disposed within the receiving groove 11, thereby pushing the blade 6 outwards via a magnetic field. In this embodiment, the blade 6 has an inclination angle with the suture line of the vascular suture device; the inclination angle is 30 degrees, 45 degrees, 60 degrees, etc. Of course, the blade 6 can also be perpendicular to the suture line of the vascular suture device.

[0073] Of course, this embodiment does not limit the structure of the receiving groove 11. In other embodiments, the receiving groove 11 may also be other shapes that are adapted to the shape of the blade 6 and the drive assembly.

[0074] Of course, this embodiment does not limit the blade cutting structure of the blade 6. In other embodiments, the blade cutting of the blade 6 can be a straight line, a V-shape, or a serrated structure.

[0075] Of course, this embodiment does not specifically limit the specific structure of the blade 6. In other embodiments, the blade 6 may also be a cuboid structure with a cutting head at the end, so as to cut the connecting seam 2 under the drive of the driving component.

[0076] Of course, this embodiment does not specifically limit whether the trigger 5 is provided. In other embodiments, the operator can also directly pull the piston 3 to drive the piston 3 to move.

[0077] Example 3

[0078] This embodiment provides a vascular suturing device, such as Figure 1 As shown, it includes:

[0079] The outer casing includes: an upper casing 7 and a lower casing 8;

[0080] A sheath 1, which houses a needle and sutures to form an access channel for passing through the host blood vessel wall; the sutures include: a suture thread and a connecting suture 2;

[0081] Piston 3, on which a rigid needle 4 is provided, is driven to move toward or withdraw from the host to complete the vascular suturing work;

[0082] Trigger 5 is drivenly connected to the sheath 1 to drive the piston 3 out of the outer casing;

[0083] The suture cutting mechanism includes: a blade 6 that is linked to the piston 3; the blade 6 is located at the proximal end of the vascular suture device toward the piston 3, and during the process of the piston 3 being driven to be pulled out of the outer casing, the blade 6 cuts the connecting suture 2 at the position close to the suture suture.

[0084] In this embodiment, as Figure 6 As shown, the suture cutting mechanism is mounted on the lower housing 8. The suture cutting mechanism includes a blade 6 and a driving component, which is a compression spring 9, for driving the blade 6 to extend toward the connecting suture 2. Furthermore, the blade 6 is fixedly connected to the compression spring 9 during sheet metal processing. Of course, in this embodiment, the connection method between the blade 6 and the compression spring 9 is not specifically limited; they can also be fixed by other methods such as bonding.

[0085] like Figure 7 As shown, with the piston 3 housed within the outer casing, the piston 3 prevents the blade 6 from ejecting; as Figure 8As shown, during the process of the piston 3 being driven to withdraw from the outer casing, the piston 3 releases its restraint on the blade 6, and the compression spring 9 drives the blade 6 to extend toward the connecting suture 2 to cut the connecting suture 2. One end of the compression spring 9 is connected to the lower housing 8, and the other end is connected to the blade 6 to drive the blade 6 to move toward the connecting suture 2. In this embodiment, the blade 6 has an inclination angle with the suture of the vascular suture device; the inclination angle is 30 degrees, 45 degrees, 60 degrees, etc. Of course, the blade 6 can also be perpendicular to the suture of the vascular suture device.

[0086] Of course, this embodiment does not specifically limit the specific structure of the driving component. The driving component in this embodiment can also be a spring sheet or an elastic rubber part.

[0087] In addition, the inner wall of the outer shell is provided with a receiving groove 11 for accommodating the blade 6 and the driving component, and the receiving groove 11 has an L-shaped structure. The blade 6 and the driving component are both disposed in the receiving groove 11. The blade 6 has a blade head 12 and a connecting part 13, which form an L-shaped structure; one end of the compression spring 9 is connected to the upper shell 7, and the other end is connected to the connecting part 13 of the blade 6 to drive the blade 6 to move toward the connecting seam 2.

[0088] Of course, this embodiment does not limit the structure of the receiving groove 11. In other embodiments, the receiving groove 11 may also be other shapes that are adapted to the shape of the blade 6 and the drive assembly.

[0089] Of course, this embodiment does not limit the blade cutting structure of the blade 6. In other embodiments, the blade cutting of the blade 6 can be a straight line, a V-shape, or a serrated structure.

[0090] Of course, this embodiment does not specifically limit the specific structure of the blade 6. In other embodiments, the blade 6 can also be a straight blade structure, and the connecting part 13 of the blade 6 with the straight blade structure is connected to the driving component for transmission.

[0091] Of course, this embodiment does not specifically limit the specific ejection method of the blade 6. In other embodiments, the blade 6 is an elastic structure. When the blade 6 is not ejected, the blade 6 is limited by the piston 3 and compressed in the receiving groove 11. When the piston 3 is driven to eject, the blade 6 extends to cut the seam.

[0092] Of course, this embodiment does not specifically limit whether the trigger 5 is provided. In other embodiments, the operator can also directly pull the piston 3 to drive the piston 3 to move.

[0093] Example 4

[0094] This embodiment provides a vascular suturing device, such as Figure 1 As shown, it includes:

[0095] The outer casing includes: an upper casing 7 and a lower casing 8;

[0096] A sheath 1, which houses a needle and sutures to form an access channel for passing through the host blood vessel wall; the sutures include: a suture thread and a connecting suture 2;

[0097] Piston 3, on which a rigid needle 4 is provided, is driven to move toward or withdraw from the host to complete the vascular suturing work;

[0098] Trigger 5 is drivenly connected to the sheath 1 to drive the piston 3 out of the outer casing;

[0099] The suture cutting mechanism includes: a blade 6 that is linked to the piston 3; the blade 6 is located at the proximal end of the vascular suture device toward the piston 3, and during the process of the piston 3 being driven to be pulled out of the outer casing, the blade 6 cuts the connecting suture 2 at the position close to the suture suture.

[0100] In this embodiment, the suture cutting mechanism is disposed within the upper housing 7. When the piston 3 is housed within the outer housing, the piston 3 prevents the blade 6 from ejecting. During the process of the piston 3 being driven out of the outer housing, the piston 3 releases its restraint on the blade 6, and the blade 6, under the influence of its own gravity, extends towards the connecting suture 2 to cut the connecting suture 2. In this embodiment, the blade 6 is perpendicular to the suture of the vascular suture device.

[0101] In this embodiment, the structure and driving method of the blade 6 are not specifically limited. In other embodiments, the blade 6 has a blade head 12 and a connecting portion 13, which form an L-shaped structure. The blade is disposed in the receiving groove 11 of the upper housing 7.

[0102] Of course, this embodiment does not limit the structure of the receiving groove 11. In other embodiments, the receiving groove 11 can also be other shapes that are adapted to the shape of the blade 6.

[0103] Of course, this embodiment does not limit the blade cutting structure of the blade 6. In other embodiments, the blade cutting of the blade 6 can be a straight line, a V-shape, or a serrated structure.

[0104] Of course, this embodiment does not specifically limit the specific structure of the blade 6. In other embodiments, the blade 6 may also be a straight blade structure.

[0105] Of course, this embodiment does not specifically limit the specific ejection method of the blade 6. In other embodiments, the blade 6 is an elastic structure. When the blade 6 is not ejected, the blade 6 is limited by the piston 3 and compressed in the receiving groove 11. When the piston 3 is driven to eject, the blade 6 extends to cut the seam.

[0106] Of course, this embodiment does not specifically limit whether the blade 6 is perpendicular to the suture line of the vascular suture device. In other embodiments, the blade 6 and the suture line of the vascular suture device have an inclination angle; the inclination angle is 30 degrees, 45 degrees, 60 degrees, etc.

[0107] Of course, this embodiment does not specifically limit whether the trigger 5 is provided. In other embodiments, the operator can also directly pull the piston 3 to drive the piston 3 to move.

[0108] Example 5

[0109] This embodiment provides a vascular suturing device, which includes:

[0110] The outer casing includes: an upper casing 7 and a lower casing 8;

[0111] A sheath 1, which houses a needle and sutures to form an access channel for passing through the host blood vessel wall; the sutures include: a suture thread and a connecting suture 2;

[0112] Piston 3, on which a rigid needle 4 is provided, is driven to move toward or withdraw from the host to complete the vascular suturing work;

[0113] Trigger 5 is drivenly connected to the sheath 1 to drive the piston 3 out of the outer casing;

[0114] The suture cutting mechanism includes: a blade 6 that is linked to the piston 3; the blade 6 is located at the proximal end of the vascular suture device toward the piston 3, and during the process of the piston 3 being driven to be pulled out of the outer casing, the blade 6 cuts the connecting suture 2 at the position close to the suture suture.

[0115] In this embodiment, the aforementioned suture cutting mechanism is simultaneously disposed in both the upper housing 7 and the lower housing 8. Furthermore, in order to cut the suture more accurately and quickly, the blades 6 disposed in the upper housing 7 and the lower housing 8 are arc-shaped structures, forming a circular cutting blade structure.

[0116] Of course, this embodiment does not specifically limit the specific structure of the blades 6 respectively disposed in the upper housing 7 and the lower housing 8. In other embodiments, the blades 6 in the upper housing 7 and the lower housing 8 are not arc-shaped structures, but are square blades respectively symmetrically disposed on the upper housing 7 and the lower housing 8.

[0117] The suture cutting mechanism includes a blade 6 and a driving component, which is a compression spring 9, for driving the blade 6 to extend toward the connecting suture 2. Furthermore, the blade 6 is fixedly connected to the compression spring 9 during sheet metal processing. Of course, in this embodiment, the connection method between the blade 6 and the compression spring 9 is not specifically limited; they can also be fixed by other methods such as bonding.

[0118] With the piston 3 housed within the outer casing, the piston 3 prevents the blade 6 from ejecting. During the process of the piston 3 being driven out of the outer casing, the piston 3 releases its restraint on the blade 6, and the compression spring 9 drives the blade 6 to extend towards the connecting suture 2 to cut it. One end of one compression spring 9 is connected to the upper housing 7, and the other end is connected to the blade 6 to drive one blade 6 to move towards the connecting suture 2; one end of another compression spring 9 is connected to the lower housing 8, and the other end is connected to the blade 6 to drive another blade 6 to move towards the connecting suture 2. In this embodiment, the blade 6 is perpendicular to the suture of the vascular suture device.

[0119] Of course, this embodiment does not specifically limit the specific structure of the driving component. The driving component in this embodiment can also be a spring sheet or an elastic rubber part.

[0120] In addition, the inner wall of the outer shell is provided with a receiving groove 11 for accommodating the blade 6 and the driving component, and the receiving groove 11 has an L-shaped structure. The blade 6 and the driving component are both disposed in the receiving groove 11. The blade 6 has a blade head 12 and a connecting part 13, which form an L-shaped structure; one end of the compression spring 9 is connected to the upper shell 7, and the other end is connected to the connecting part 13 of one of the blades 6 to drive the blade 6 to move toward the connecting seam 2; one end of the other compression spring 9 is connected to the lower shell 8, and the other end is connected to the connecting part 13 of another blade 6 to drive the blade 6 to move toward the connecting seam 2.

[0121] Of course, this embodiment does not limit the structure of the receiving groove 11. In other embodiments, the receiving groove 11 may also be other shapes that are adapted to the shape of the blade 6 and the drive assembly.

[0122] Of course, this embodiment does not limit the blade cutting structure of the blade 6. In other embodiments, the blade cutting of the blade 6 can be a straight line, a V-shape, or a serrated structure.

[0123] Of course, this embodiment does not specifically limit the specific structure of the blade 6. In other embodiments, the blade 6 can also be a straight blade structure, and the connecting part 13 of the blade 6 with the straight blade structure is connected to the driving component for transmission.

[0124] Of course, this embodiment does not specifically limit the specific ejection method of the blade 6. In other embodiments, the blade 6 is an elastic structure. When the blade 6 is not ejected, the blade 6 is limited by the piston 3 and compressed in the receiving groove 11. When the piston 3 is driven to eject, the blade 6 extends to cut the seam.

[0125] Of course, this embodiment does not specifically limit whether the blade 6 is perpendicular to the suture line of the vascular suture device. In other embodiments, the blade 6 and the suture line of the vascular suture device have an inclination angle; the inclination angle is 30 degrees, 45 degrees, 60 degrees, etc.

[0126] Of course, this embodiment does not specifically limit whether the trigger 5 is provided. In other embodiments, the operator can also directly pull the piston 3 to drive the piston 3 to move.

[0127] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A vascular suture device, characterized in that, include: outer shell; A piston (3) is provided with a hard needle (4) which is driven to move toward or out of the host to complete the vascular suturing work; The suture cutting mechanism includes: a blade (6) that is linked to the piston (3); the blade (6) is located at the proximal end of the vascular suture device in the direction of the piston (3); The outer shell includes an upper shell (7) and a lower shell (8); the suture cutting mechanism is disposed on the upper shell (7) and / or the lower shell (8). With the piston (3) housed within the outer casing, the piston (3) prevents the blade (6) from ejecting; During the process of the piston (3) being driven out of the housing, the piston (3) releases the restriction on the blade (6), and the blade (6) extends toward the connecting seam (2) to cut the connecting seam (2).

2. The vascular suture device according to claim 1, characterized in that, The suture cutting mechanism is disposed in the upper housing (7); With the piston (3) housed within the outer casing, the piston (3) prevents the blade (6) from ejecting; During the process of the piston (3) being driven out of the housing, the piston (3) releases the restriction on the blade (6), and the blade (6) extends toward the connecting seam (2) under the influence of its gravity to cut the connecting seam (2).

3. The vascular suture device according to claim 1, characterized in that, The suture cutting mechanism further includes a driving component for driving the blade (6) to extend toward the connecting suture (2); When the piston (3) is housed in the outer casing, the piston (3) prevents the blade (6) from ejecting; during the process of the piston (3) being driven out of the outer casing, the piston (3) releases the restriction on the blade (6), and the driving component drives the blade (6) to extend toward the connecting seam (2) to cut the connecting seam (2).

4. The vascular suture device according to claim 3, characterized in that, The suture cutting mechanism is located in the lower housing (8).

5. The vascular suture device according to claim 3, characterized in that, The blades (6) respectively disposed in the upper housing (7) and the lower housing (8) are arc-shaped structures, and the blades (6) in the upper housing (7) and the lower housing (8) form a circular ring structure cutting blade.

6. The vascular suture device according to claim 3, characterized in that, The driving component is a compression spring (9) or a spring sheet. One end of the compression spring (9) is connected to the upper housing (7) and / or the lower housing (8), and the other end is connected to the blade (6) to drive the blade (6) to move toward the connecting seam (2).

7. The vascular suture device according to claim 3, characterized in that, The driving component is a magnetic driving assembly, which drives the blade (6) to pop out through magnetic field force.

8. The vascular suture device according to claim 7, characterized in that, The magnetic drive assembly includes a magnetic element (10) disposed on the outer casing, wherein the position of the blade (6) near the magnetic element (10) is the same as the magnetic element (10).

9. The vascular suture device according to claim 2, characterized in that, The inner wall of the outer casing is provided with a receiving groove (11) for accommodating the blade (6).

10. The vascular suture device according to claim 3, characterized in that, The inner wall of the outer shell is provided with a receiving groove (11) for accommodating the blade (6) and the driving component, and the receiving groove (11) is adapted to the shape of the blade (6) and the driving component respectively.

11. The vascular suture device according to claim 3, characterized in that, The blade (6) has a blade head (12) and a connecting part (13), the blade head (12) and the connecting part (13) forming an L-shaped structure or a straight blade structure; the connecting part (13) is connected to the driving component for transmission.

12. The vascular suture device according to claim 1, characterized in that, The blade (6) has a V-shaped or serrated cut to prevent the suture from slipping relative to the blade (6); and / or, The blade (6) is perpendicular to the suture line of the vascular suture device, or the blade (6) has an angle of inclination with the central axis of the vascular suture device; and / or, The blade (6) is an elastic structure; when the blade (6) is not ejected, the blade (6) is limited by the piston (3) and compressed in the housing; when the piston (3) is driven to eject, the blade (6) extends to cut the seam.

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