Locking and line cutting device and plugging device system

Abstract

The invention provides a locking and wire cutting device and a plugging device system, and the locking and wire cutting device comprises a housing which is provided with a first accommodation space, and the side wall of the housing is provided with a first through hole which is communicated with the first accommodation space; the locking piece is located in the first containing space, the far end of the locking piece is provided with a locking part, and the near end of the wire locking piece is located on the locking part; the cutting piece is located in the first containing space; the driving part and the driven part are both located in the first containing space, and the driving part is configured to drive the driven part to move towards the near end under the action of external force, so that the driven part drives the locking part to lock the wire locking part; under the action of external force, the driven piece and the cutting piece are driven to move in the far-end direction, so that the driven piece and the locking part are reset, and the cutting piece cuts the medical line at the first through hole; the locking piece, the cutting piece, the driving piece and the driven piece are all located in the first containing space when moving. The operation difficulty of suture locking and suture cutting in the operation process is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a locking tangent device and an occluder system. Background Art

[0002] Traditional surgical procedures are intuitive for tying and cutting medical threads, and operators can directly tie and cut medical threads manually. However, with the rapid development of minimally invasive surgery and interventional surgery, under the guidance of imaging equipment, special precision interventional instruments are introduced into the human body's blood vessels and reach the site of the disease in the body for treatment. Interventional instruments need to involve remote suturing, and then knotting and cutting medical threads.

[0003] Remote suturing needs to be conducted under the guidance of imaging equipment. The operator observes the lesion through the screen and performs the operation, which requires the operator to have extremely high accuracy and spatial perception. Since the lesion cannot be touched directly, the operator needs to rely on imaging images and feedback from the instrument to determine the position and depth of the suturing. Therefore, it is difficult for the operator to tie and cut the medical thread in minimally invasive and interventional surgeries. Summary of the invention

[0004] In order to overcome the difficulty of operators in knotting and cutting medical wires in minimally invasive surgery and interventional surgery, the present application provides a locking and cutting device and an occluder system.

[0005] The specific technical solutions are as follows:

[0006] The present application provides a locking and cutting device, comprising:

[0007] A housing, wherein a first accommodation space is formed in the housing, and a first through hole communicating with the first accommodation space is provided on a side wall of the housing;

[0008] A locking member and a locking member, wherein the locking member is located in the first accommodating space, the locking member has a locking portion at the distal end, the locking member has a proximal end located on the locking portion, the locking member is used to allow a medical wire to pass through, and the medical wire enters the first accommodating space from the locking member and extends out through the first through hole;

[0009] a cutting piece, wherein the cutting piece is located in the first accommodation space;

[0010] An active member and a driven member, wherein the active member and the driven member are both located in the first accommodating space, and the active member is configured to drive the driven member to move toward the proximal direction under the action of an external force, so that the driven member drives the locking part to lock the wire locking member; the active member is also configured to drive the driven member and the cutting member to move toward the distal direction under the action of an external force, so that the driven member and the locking part are reset and the cutting member cuts the medical wire at the first through hole;

[0011] Wherein, the locking member, the cutting member, the active member and the driven member are all located in the first accommodating space when moving.

[0012] Wherein, the follower has an abutting section and an extending section, a second accommodating space is formed between the abutting section, the extending section and the side wall where the first through hole is located, the locking member is located in the second accommodating space, the distal end of the extending section protrudes toward the distal end of the locking member to form an extrusion portion, and the extrusion portion contacts the distal end of the locking member;

[0013] The distal end of the active member is close to the locking member, and the proximal end of the active member is close to the abutting section. The active member is configured to move toward the proximal direction under the action of an external force to contact the driven member and drive the driven member to move toward the proximal direction, so that the extrusion part squeezes the distal end of the locking member, so that the locking part locks the wire locking member;

[0014] Wherein, the extrusion part is located in the first accommodating space when moving.

[0015] Wherein, the locking member comprises a base, a first arm and a second arm, the base is arranged on the shell, the first arm and the second arm are extended in the distal direction from the base, the first arm forms a first action portion at the distal end, the second arm forms a second action portion at the distal end, the first action portion and the second action portion constitute the locking portion, and the extrusion portion abuts against the first action portion;

[0016] In a cross section parallel to the distal direction, the inner side surface of the second action portion is parallel to the distal direction; or, in a cross section parallel to the distal direction, the inner side surface of the first action portion and the inner side surface of the second action portion are both parallel to the distal direction.

[0017] Wherein, in a cross section parallel to the distal end direction, a third accommodation space is formed between the extension section and the extrusion portion, and the first support arm and the first action portion are embedded in the third accommodation space;

[0018] Among them, an angle α is formed between the inner side surface of the extrusion portion and the inner side surface of the extension section, and an angle β is formed between the outer side surface of the first action portion and the outer side surface of the first arm, 180°>α>90°, 180°>β>90°, α=β.

[0019] Among them, in the cross section parallel to the distal direction, the first acting portion has a first inner side surface and a second inner side surface, the first inner side surface of the first acting portion is used to contact the locking wire member, the first inner side surface of the first acting portion is connected to the inner side surface of the first support arm through the second inner side surface of the first acting portion, and an angle γ is formed between the second inner side surface of the first acting portion and the inner side surface of the first support arm, 180°>γ>90°, and γ<β.

[0020] Wherein, in a cross section parallel to the distal direction, the length of the inner side surface of the first action portion is between 1.5 mm and 4.5 mm, and the ratio of the length of the inner side surface of the first action portion to the length of the first arm is between 15% and 45%;

[0021] Wherein, in a cross section parallel to the distal direction, the length of the inner side surface of the second action portion is between 1.5 mm and 4.5 mm, and the ratio of the length of the inner side surface of the second action portion to the length of the second arm is between 15% and 45%;

[0022] In which, in a cross section parallel to the distal direction, the height of the base is between 1.6mm-2.7mm, the height of the first arm is between 0.25mm-0.75mm, the height of the second arm is between 0.25mm-0.75mm, and the gap formed between the first arm and the second arm is between 0.8mm-1.6mm, wherein the height of the first arm is greater than or equal to the height of the second arm.

[0023] Wherein, the second arm is bent toward the side wall where the first through hole is located to form a bent section and the second action portion, and a third through hole is provided on the second arm and / or the bent section, and the medical wire passes through the locking wire member and the third through hole and then extends out through the first through hole;

[0024] A fourth accommodating space is formed between the second arm, the bending section, the second action portion and the side wall where the first through hole is located. The cutting member is arranged on the active member, and the cutting member is used to move to the fourth accommodating space and cut the medical wire under the action of the active member.

[0025] Among them, a positioning portion is provided on the extension section, and the positioning portion is located between the active member and the locking member. The active member is configured to move in the distal direction under the action of an external force to contact the positioning portion and drive the driven member to move in the distal direction to reset the driven member and the locking portion.

[0026] The shell has a proximal end wall and a distal end wall, and the first accommodation space is formed between the proximal end wall of the shell, the distal end wall of the shell and the side wall of the shell, so as to restrict the locking member, the cutting member, the active member and the driven member within the first accommodation space; a second through hole is provided on the distal end wall of the shell, and the proximal end of the locking member contacts the locking portion after passing through the second through hole;

[0027] And / or, a first stopper is provided on the housing, and the first stopper is used to abut against the active member or the driven member when the active member drives the driven member and the cutting member to move toward the distal direction, so that the active member, the driven member and the cutting member are all located in the first accommodating space;

[0028] And / or, a second limit member is provided on the follower, and the second limit member is used to abut against the locking member when the active member drives the follower and the cutting member to move in the distal direction, so that the active member, the follower and the cutting member are all located in the first accommodating space.

[0029] The present application also provides an occluder system, comprising:

[0030] An occluder and a locking and cutting device as described in any of the above embodiments, wherein the occluder is provided with a medical wire, one end of the medical wire is arranged on the occluder, and the other end of the medical wire enters the first accommodating space of the locking and cutting device through the locking wire member of the locking and cutting device and extends out through the first through hole of the locking and cutting device;

[0031] Handheld devices;

[0032] The connecting device includes a connecting member and a linkage member, wherein the two ends of the connecting member are respectively connected to the housing of the locking and cutting device and the handheld device; one end of the linkage member extends into the housing and is connected to the active member, and the other end is connected to the handheld device, and the linkage member is used to drive the active member to move under the action of the handheld device.

[0033] The occluder is further provided with a withdrawal line, a fixing piece is provided on the connecting piece, the fixing piece is sleeved on the connecting piece, one end of the withdrawal line is provided on the fixing piece, and the other end passes through the occluder, enters the first accommodating space and extends out through the first through hole, and is finally provided on the fixing piece;

[0034] Alternatively, the occluder is further provided with a withdrawal line, a fixing piece is provided on the connecting piece, the fixing piece is sleeved on the connecting piece, a first channel and a second channel are provided on the fixing piece, the withdrawal line passes through the first channel and the occluder, enters the first accommodating space, extends through the first through hole, and finally passes through the second channel; a first clamping piece and a second clamping piece are respectively provided at both ends of the withdrawal line, the first end of the withdrawal line is clamped with the first channel through the first clamping piece, and the second end of the withdrawal line is clamped with the second channel through the second clamping piece;

[0035] Alternatively, the occluder is further provided with a withdrawal line, a fixing piece is arranged on the connecting piece, the fixing piece is sleeved on the connecting piece, the fixing piece has a clamping section and an attachment section, the side wall thickness of the clamping section is greater than the side wall thickness of the attachment section, a first channel and a second channel are arranged on the side wall of the clamping section, after the withdrawal line passes through the first channel and the occluder, it enters the first accommodating space and extends out through the first through hole, and finally passes through the second channel; the two ends of the withdrawal line are respectively provided with a first clamping piece and a second clamping piece, the first end of the withdrawal line is clamped with the first channel through the first clamping piece, and the second end of the withdrawal line is clamped with the second channel through the second clamping piece.

[0036] This application has at least the following beneficial effects:

[0037] The present application provides a locking and cutting device, comprising: a housing, a first accommodation space is formed in the housing, and a first through hole communicating with the first accommodation space is provided on a side wall of the housing;

[0038] A locking member and a locking member, wherein the locking member is located in the first accommodation space, the locking member has a locking portion at the distal end, the locking member has a proximal end located on the locking portion, and the locking member is used to allow the medical wire to pass through, and the medical wire enters the first accommodation space from the locking member and extends out through the first through hole;

[0039] A cutting piece, the cutting piece is located in the first accommodation space;

[0040] The active member and the driven member are both located in the first accommodation space, and the active member is configured to drive the driven member to move toward the proximal direction under the action of an external force, so that the driven member drives the locking part to lock the wire locking member; the active member is also configured to drive the driven member and the cutting member to move toward the distal direction under the action of an external force, so that the driven member and the locking part are reset and the cutting member cuts the medical wire at the first through hole;

[0041] The locking member, the cutting member, the active member and the driven member are all located in the first accommodating space when moving.

[0042] The locking tangent device of the present application uses an active part to drive a driven part and a locking part to lock the medical wire, and uses an active part to drive a cutting part to cut the medical wire, so that the operator can quickly complete the locking and cutting of the medical wire through the locking tangent device, which greatly simplifies the locking and cutting steps during the operation, thereby shortening the operation time and improving the overall operation efficiency. At the same time, the locking tangent device can ensure that the medical wire is stably locked, avoid locking failure caused by misoperation during the operation, and can reduce damage to surrounding tissues, and reduce the risk of complications such as postoperative infection and bleeding. And the locking tangent device is suitable for a variety of interventional and minimally invasive surgeries, and can meet the needs of different surgical scenarios.

[0043] Furthermore, the locking and tangent device of the present application drives the driven part to move in the proximal direction through the active part to lock the medical wire, and drives the cutting part to move in the distal direction through the active part to cut the medical wire. The present application makes the locking direction and the cutting direction opposite, ensuring that the cutting operation can only be performed after the medical wire is firmly locked, effectively avoiding the risk of the medical wire being accidentally cut when it is not locked; at the same time, it enables the operator to control the locking and cutting process more accurately, ensuring that each step of the operation is in line with expectations, which helps to reduce uncertainties and risks in surgery; and firm locking and precise cutting help to ensure the firmness and stability of the suture, thereby optimizing the surgical effect and reducing the occurrence of postoperative complications.

[0044] Furthermore, the active part, the driven part, the cutting part and the locking part of the locking and cutting device of the present application are all located inside the housing at the initial stage and when moving (when the active part moves under the action of external force to make the locking part in the locking state / reset state and when the cutting part is in the cutting state), so they will not extend out of the housing and directly contact human tissue, thereby avoiding the risk of damage to human tissue due to improper operation or mechanical failure during surgery. At the same time, it can effectively reduce the possibility of external bacteria, viruses and other microorganisms contacting human tissue, thereby reducing the risk of postoperative infection.

[0045] The present application also provides an occluder system, comprising: an occluder and a locking and tangent device of any of the above embodiments, the occluder being provided with a medical wire, one end of the medical wire being arranged on the occluder, and the other end of the medical wire entering into a first accommodating space of the locking and tangent device through a locking wire member of the locking and tangent device and extending out through a first through hole of the locking and tangent device; a handheld device; a connecting device, comprising a connecting member and a linkage member, wherein both ends of the connecting member are respectively connected to a housing of the locking and tangent device and a handheld device; one end of the linkage member extends into the housing and is connected to an active member, and the other end is connected to the handheld device, and the linkage member is used to drive the active member to move under the action of the handheld device.

[0046] The present application provides an occluder system that enables the operator to quickly complete the locking and cutting of the medical line through the locking and cutting device, greatly simplifying the locking and cutting steps during the operation, thereby shortening the operation time and improving the overall operation efficiency. At the same time, the locking and cutting device can ensure that the medical line is stably locked, avoid locking failure caused by misoperation during the operation, and can reduce damage to surrounding tissues and reduce the risk of complications such as postoperative infection and bleeding. The locking and cutting device is suitable for a variety of interventional and minimally invasive surgeries and can meet the needs of different surgical scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0048] Figure 1 The cross-section of the locking and cutting device provided in this embodiment parallel to the distal direction is schematically shown. Figure 1 ;

[0049] Figure 2 The cross-section of the locking and cutting device provided in this embodiment parallel to the distal direction is schematically shown. Figure 2 ;

[0050] Figure 3 The cross-section of the locking and cutting device provided in this embodiment parallel to the distal direction is schematically shown. Figure 3 ;

[0051] Figure 4 The cross-section of the locking and cutting device provided in this embodiment parallel to the distal direction is schematically shown. Figure 4 ;

[0052] Figure 5 The cross-section of the locking and cutting device provided in this embodiment parallel to the distal direction is schematically shown. Figure 5 ;

[0053] Figure 6 The cross-section of the locking and cutting device provided in this embodiment parallel to the distal direction is schematically shown. Figure 6 ;

[0054] Figure 7 The cross-section of the locking and cutting device provided in this embodiment parallel to the distal direction is schematically shown. Figure 7 ;

[0055] Figure 8 A schematic diagram of the structure of the active component and the cutting component of the locking and cutting device provided in this embodiment;

[0056] Fig. 9 A schematic diagram of the structure of a locking member for a locking thread cutting device provided in this embodiment;

[0057] Fig.10 The cross-section of the locking and cutting device provided in this embodiment parallel to the distal direction is schematically shown. Figure 8 ;

[0058] Fig.11 The cross-section of the locking and cutting device provided in this embodiment parallel to the distal direction is schematically shown. Figure 9 ;

[0059] Fig.12 The cross-section of the locking and cutting device provided in this embodiment parallel to the distal direction is schematically shown. Figure 10 ;

[0060] Fig.13 A schematic diagram of the structure of an occluder system provided in this embodiment Figure 1 ;

[0061] Fig.14 A schematic diagram of the structure of an occluder system provided in this embodiment Figure 2 ;

[0062] Fig.15 A schematic diagram of the structure of an occluder system provided in this embodiment Figure 3 ;

[0063] Fig.16 A schematic diagram of the structure of an occluder system provided in this embodiment Figure 4 ;

[0064] Fig.17 A schematic diagram of the structure of a withdrawal line of an occluder system provided in this embodiment;

[0065] Fig.18 A schematic structural diagram of a fixing component of an occluder system provided in this embodiment.

[0066] Reference numerals:

[0067] 10-locking cutting device; 11-housing; 12-locking member; 13-locking member; 14-cutting member; 15-active member; 16-driven member; 17-fastening member; 111-first accommodating space; 112-second through hole; 113-first through hole; 114-distal end wall of housing; 115-proximal end wall of housing; 116-first limiting member; 117-second limiting member; 118-third limiting member; 121-base; 122-first support arm; 123-second support arm; 124-first action part; 125-second action part; 126-locking part; 127-bending section; 128-third through hole; 129-the fourth accommodating space; 161-the abutting section; 162-the extending section; 163-the second accommodating space; 164-the squeezing portion; 165-the third accommodating space; 166-the positioning portion; 1221-the inner side surface of the first arm; 1222-the outer side surface of the first arm; 1241-the inner side surface of the first action portion; 1242-the outer side surface of the first action portion; 1243-the first inner side surface of the first action portion; 1244-the second inner side surface of the first action portion; 1251-the inner side surface of the second action portion; 1621-the inner side surface of the extending section; 1641-the inner side surface of the squeezing portion; X-the distal direction; Y-the proximal direction;

[0068] 20-occluder; 21-medical line; 22-retreat line; 221-first clamping piece; 222-second clamping piece;

[0069] 30-Handheld device;

[0070] 40 -connecting device; 41 -connecting piece; 42 -linking piece; 43 -sleeve piece; 44 -fixing piece; 441 -first channel; 442 -second channel; 443 -clamping section; 444 -attachment section. DETAILED DESCRIPTION

[0071] In the following, various embodiments of the present application will be described in more detail. The present application may have various embodiments, and adjustments and changes may be made therein. It should be noted that in the present application, unless otherwise clearly specified and defined, terms such as "installation", "connection", and "fixing" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium; it may be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0072] In the present application, a person of ordinary skill in the art should understand that the terms indicating orientation or positional relationship herein are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0073] In the embodiment of the present invention, the proximal end is an end close to the operator, and the distal end is an end far away from the operator.

[0074] like Figures 1 to 8 As shown, this embodiment provides a locking and cutting device 10, comprising:

[0075] A housing 11, wherein a first accommodating space 111 is formed in the housing 11, and a first through hole 113 communicating with the first accommodating space 111 is disposed on a side wall of the housing 11;

[0076] The locking member 12 and the locking member 13, the locking member 12 is located in the first accommodating space 111, the locking member 12 has a locking portion 126 at the distal end, the locking member 13 is located at the locking portion 126 at the proximal end, the locking member 13 is used to allow the medical wire 21 to pass through, and the medical wire 21 enters the first accommodating space 111 from the locking member 13 and extends out through the first through hole 113;

[0077] A cutting member 14, the cutting member 14 is located in the first accommodation space 111;

[0078] The active member 15 and the driven member 16 are both located in the first accommodating space 111. The active member 15 is configured to drive the driven member 16 to move in the proximal direction Y under the action of an external force, so that the driven member 16 drives the locking portion 126 to lock the wire locking member 13; the active member 15 is also configured to drive the driven member 16 and the cutting member 14 to move in the distal direction X under the action of an external force, so that the driven member 16 and the locking portion 126 are reset and the cutting member 14 cuts the medical wire 21 at the first through hole 113;

[0079] The locking member 12 , the cutting member 14 , the active member 15 and the driven member 16 are all located in the first accommodating space 111 when moving.

[0080] Specifically, “the locking member 12, the cutting member 14, the active member 15 and the driven member 16 are all located in the first accommodating space 111 when moving” means that: under the action of external force, the active member 15 drives the driven member 16 to move in the proximal direction Y, so that the driven member 16 drives the locking part 126 to lock the locking wire member 13. In this process, the locking member 12, the cutting member 14, the active member 15 and the driven member 16 are all located in the first accommodating space 111.

[0081] Specifically, “the locking member 12, the cutting member 14, the active member 15 and the driven member 16 are all located in the first accommodating space 111 when moving” means that: under the action of external force, the active member 15 drives the driven member 16 and the cutting member 14 to move in the distal direction X, so that the driven member 16 and the locking portion 126 are reset and the cutting member 14 cuts the medical thread 21 at the first through hole 113. During this process, the locking member 12, the cutting member 14, the active member 15 and the driven member 16 are all located in the first accommodating space 111.

[0082] The locking tangent device 10 provided in this embodiment drives the driven member 16 and the locking member 12 through the active member 15 to lock the medical wire 21, and drives the cutting member 14 through the active member 15 to cut the medical wire 21, so that the operator can quickly complete the locking and cutting of the medical wire 21 through the locking tangent device 10, which greatly simplifies the locking and cutting steps during the operation, thereby shortening the operation time and improving the overall operation efficiency. At the same time, the locking tangent device 10 can ensure that the medical wire 21 is stably locked, avoiding locking failure caused by misoperation during the operation, and can reduce damage to surrounding tissues, and reduce the risk of complications such as postoperative infection and bleeding. And the locking tangent device 10 is suitable for a variety of interventional and minimally invasive surgeries, and can meet the needs of different surgical scenarios.

[0083] The locking and tangent device 10 provided in this embodiment drives the driven member 16 to move in the proximal direction Y through the active member 15 to lock the medical wire 21, and drives the cutting member 14 to move in the distal direction X through the active member 15 to cut the medical wire 21. The present application makes the locking direction and the cutting direction opposite, ensuring that the cutting operation can only be performed after the medical wire 21 is firmly locked, effectively avoiding the risk of the medical wire 21 being accidentally cut when the medical wire 21 is not locked; at the same time, the operator can more accurately control the locking and cutting process to ensure that each step of the operation is in line with expectations, which helps to reduce uncertainties and risks in the operation; and firm locking and precise cutting help to ensure the firmness and stability of the suture, thereby optimizing the surgical effect and reducing the occurrence of postoperative complications.

[0084] Furthermore, the active member 15, the driven member 16, the cutting member 14 and the locking member 12 of the locking and cutting device 10 provided in this embodiment are all located inside the housing 11 at the initial stage and during movement (when the active member 15 moves under the action of an external force to place the locking member 12 in a locked state / reset state and when the cutting member 14 is in a cutting state), so they will not extend out of the housing 11 and directly contact human tissue, thereby avoiding the risk of damage to human tissue due to improper operation or mechanical failure during surgery. At the same time, the possibility of external bacteria, viruses and other microorganisms contacting human tissue can be effectively reduced, thereby reducing the risk of postoperative infection.

[0085] In the embodiment of the present invention, in the cross section parallel to the distal direction X, the length of the thread locking member 13 is between 0.5 mm and 10 mm.

[0086] In the embodiment of the present invention, in the cross section parallel to the distal direction X, the length of the thread locking member 13 is between 1 mm and 5 mm.

[0087] In the embodiment of the present invention, in the cross section parallel to the distal direction X, the length of the thread locking member 13 is 2.5 mm.

[0088] In the embodiment of the present invention, the locking member 12 is fixed to the housing 11 by a fastener 17 to prevent the locking member 12 from moving in the distal direction X or the proximal direction Y under the action of the active member 15 or the driven member 16. In the embodiment of the present invention, in a cross section parallel to the distal direction X, the fastener 17 is polygonal, elliptical, semicircular or irregular, so as to prevent the locking member 12 from rotating.

[0089] like Figure 1 As shown, in an embodiment of the present invention, the shell 11 has a proximal end wall 115 and a distal end wall 114, and a first accommodating space 111 is formed between the proximal end wall 115 of the shell, the distal end wall 114 of the shell and the side wall of the shell to confine the locking member 12, the cutting member 14, the active member 15 and the driven member 16 within the first accommodating space 111.

[0090] In this embodiment, the proximal end wall 115 of the housing blocks the proximal end of the first accommodating space 111, and the distal end wall 114 of the housing blocks the distal end of the first accommodating space 111, so that the locking member 12, the cutting member 14, the active member 15 and the driven member 16 will not extend out of the housing 11 and directly contact the human tissue, thereby avoiding the risk of damage to the human tissue due to improper operation or mechanical failure during the operation. At the same time, it can effectively reduce the possibility of external bacteria, viruses and other microorganisms contacting the human tissue, thereby reducing the risk of postoperative infection.

[0091] In the embodiment of the present invention, a second through hole 112 is provided on the distal end wall 114 of the housing, and the proximal end of the wire locking member 13 contacts the locking portion 126 after passing through the second through hole 112 .

[0092] In the embodiment of the present invention, the outer diameter of the distal end of the wire locking member 13 is greater than the outer diameter of the proximal end of the wire locking member 13 , and the distal end of the wire locking member 13 is clamped on the distal end wall 114 of the housing through the second through hole 112 .

[0093] like Fig.10As shown, in the embodiment of the present invention, a first stopper 116 is provided on the housing 11, and the first stopper 116 is used to abut against the active member 15 or the driven member 16 when the active member 15 drives the driven member 16 and the cutting member 14 to move in the distal direction X, so that the active member 15, the driven member 16 and the cutting member 14 are all located in the first accommodation space. Specifically, the housing 11 has a third stopper 118 to limit the moving position when the active member 15 drives the driven member 16 and the cutting member 14 to move in the proximal direction Y, so as to prevent the active member 15, the driven member 16 and the cutting member 14 from being separated from the housing 11.

[0094] In this embodiment, the locking member 12, the cutting member 14, the active member 15 and the driven member 16 are prevented from extending out of the housing 11 and directly contacting the human tissue by means of the first stopper 116, thereby avoiding the risk of damaging the human tissue due to improper operation or mechanical failure during the operation. At the same time, the housing 11 does not need to be provided with end walls at the distal and proximal ends, thereby reducing the difficulty of installing the locking member 12, the cutting member 14, the active member 15 and the driven member 16.

[0095] like Fig.10 As shown, in the embodiment of the present invention, the first stopper 116 is arranged corresponding to the driven member 16, and the first stopper 116 is used to abut against the distal end of the driven member 16 when the active member 15 drives the driven member 16 and the cutting member 14 to move in the distal direction X, so as to limit the driven member 16 from continuing to move in the distal direction X, thereby limiting the active member 15 and the cutting member 14 from continuing to move in the distal direction X. Specifically, the first stopper 116 is arranged at the distal end of the housing 11.

[0096] like Fig.11 As shown, in the embodiment of the present invention, the first limiter 116 is arranged corresponding to the active member 15, and the first limiter 116 is used to abut against the distal end of the active member 15 when the active member 15 drives the driven member 16 and the cutting member 14 to move in the distal direction X, so as to limit the active member 15 from continuing to move in the distal direction X, thereby limiting the driven member 16 and the cutting member 14 from continuing to move in the distal direction X. Specifically, the first limiter 116 is arranged on the side wall of the housing 11, and is located between the active member 15 and the locking member 12.

[0097] like Fig.12 As shown, in the embodiment of the present invention, a second stopper 117 is provided on the follower 16, and the second stopper 117 is used to abut against the locking member 12 when the active member 15 drives the follower 16 and the cutting member 14 to move in the distal direction X, so that the active member 15, the follower 16 and the cutting member 14 are all located in the first accommodating space 111. Specifically, the housing 11 has a third stopper 118 to limit the moving position when the active member 15 drives the follower 16 and the cutting member 14 to move in the proximal direction Y, so as to prevent the active member 15, the follower 16 and the cutting member 14 from being separated from the housing 11.

[0098] In this embodiment, the locking member 12, the cutting member 14, the active member 15 and the driven member 16 are prevented from extending out of the housing 11 and directly contacting the human tissue by the second stopper 117, thereby avoiding the risk of damaging the human tissue due to improper operation or mechanical failure during the operation. At the same time, the housing 11 does not need to be provided with end walls at the distal and proximal ends, and the second stopper 117 is located on the driven member 16 instead of the housing 11, further reducing the difficulty of installing the locking member 12, the cutting member 14, the active member 15 and the driven member 16.

[0099] like Figures 1 to 5 As shown, in the embodiment of the present invention, the follower 16 has an abutting section 161 and an extending section 162, and a second accommodating space 163 is formed between the abutting section 161, the extending section 162 and the side wall where the first through hole 113 is located. The locking member 12 is located in the second accommodating space 163, and the distal end of the extending section 162 protrudes toward the distal end of the locking member 12 to form an extrusion portion 164, and the extrusion portion 164 contacts the distal end of the locking member 12;

[0100] The distal end of the active member 15 is close to the locking member 12, and the proximal end of the active member 15 is close to the abutment section 161. The active member 15 is configured to move in the proximal direction Y under the action of an external force to contact the driven member 16, and drive the driven member 16 to move in the proximal direction Y, so that the squeezing portion 164 squeezes the distal end of the locking member 12, so that the locking portion 126 locks the locking wire member 13;

[0101] The pressing portion 164 is located in the first accommodating space 111 when moving.

[0102] In this embodiment, the distal end of the extension section 162 protrudes toward the distal end of the locking member 12 to form a squeezing portion 164, so that in the cross section parallel to the distal direction X, the squeezing portion 164 is arranged longitudinally, so that the follower 16 can drive the locking portion 126 located at the distal end of the locking member 12 through the squeezing portion 164 when moving, so that the locking portion 126 moves in the longitudinal direction and achieves accurate locking of the locking portion 126, and at the same time, the squeezing portion 164 squeezes the locking portion 126 unilaterally, reducing the locking force required for the squeezing operation, and facilitating the operation. In addition, in the cross section parallel to the distal direction X, the squeezing portion 164 is arranged longitudinally, so that the squeezing portion 164 does not protrude from the distal end of the shell 11, and therefore the squeezing portion 164 does not extend out of the shell 11 and directly contact the human tissue, thereby avoiding the risk of damage to the human tissue due to improper operation or mechanical failure during the operation.

[0103] like Figure 4As shown, in this embodiment, the extrusion portion 164 is used to unilaterally extrude the locking portion 126, so that the second accommodating space 163 only needs to provide deformation space for the extruded side of the locking portion 126, thereby helping to reduce the size of the second accommodating space 163, and helping to reduce the overall size of the locking and cutting device 10, which helps to miniaturize the locking and cutting device 10.

[0104] like Figures 1 to 7 As shown, in an embodiment of the present invention, the cutting member 14 is disposed on the active member 15, and the active member 15 is configured to drive the driven member 16 to move in the distal direction X under the action of an external force, so that the driven member 16 and the locking portion 126 are reset and the cutting member 14 cuts the medical line 21.

[0105] like Figures 1 to 5 As shown, in the embodiment of the present invention, a positioning portion 166 is provided on the extension section 162, and the positioning portion 166 is located between the active member 15 and the locking member 12. The active member 15 is configured to move in the distal direction X under the action of an external force to contact the positioning portion 166, and drive the driven member 16 to move in the distal direction X by pushing the positioning portion 166, so as to reset the driven member 16 and the locking portion 126.

[0106] In this embodiment, by providing the positioning portion 166 , the active member 15 drives the driven member 16 to move in the distal direction X under certain circumstances (when the active member 15 contacts the positioning portion 166 and moves in the distal direction X). The structure is simple and the production and installation difficulty is low.

[0107] In an embodiment of the present invention, in a cross section parallel to the distal direction X, the distance between the positioning portion 166 and the abutment section 161 is greater than the distance between the distal end of the cutting member 14 and the distal end of the first through hole 113 when the active member 15 moves under the action of an external force to place the locking member 12 in a locked state.

[0108] In this embodiment, the active member 15 drives the cutting member 14 to move in the distal direction X. When the cutting member 14 cuts the medical wire 21, the locking member 12 is still in a locked state, thereby preventing the locking member 13 from being unstable and displaced due to the resetting of the locking member 12, resulting in the distance between the cut end of the medical wire 21 and the locking member 13 being too long when the cutting member 14 cuts the medical wire 21.

[0109] In an embodiment of the present invention, the positioning portion 166 constitutes a second limiting member 117, and in a cross section parallel to the distal direction X, the distance between the positioning portion 166 and the distal end of the extension section 162 is less than or equal to the length of the locking member 12, so that the extension section 162 will not extend out of the shell 11 and directly contact human tissue, thereby avoiding the risk of the extension section 162 extending out of the shell 11 and causing damage to human tissue during surgery.

[0110] like Figure 2As shown, in the embodiment of the present invention, the locking member 12 includes a base 121, a first arm 122 and a second arm 123. The base 121 is arranged on the shell 11. The base 121 extends the first arm 122 and the second arm 123 in the distal direction X. The first arm 122 forms a first action portion 124 at the distal end, and the second arm 123 forms a second action portion 125 at the distal end. The first action portion 124 and the second action portion 125 constitute a locking portion 126, and the extrusion portion 164 abuts against the first action portion 124.

[0111] In the embodiment of the present invention, the first arm 122 is made of elastic material.

[0112] In the embodiment of the present invention, in a cross section parallel to the distal direction X, the inner side surface 1241 of the first action portion is arc-shaped or wavy, and the inner side surface 1251 of the second action portion is parallel to the distal direction X. In this embodiment, the inner side surface 1241 of the first action portion is arc-shaped or wavy in the cross section, so that the corresponding surface of the locking wire member 13 after being locked by the first action portion 124 is curved, so as to increase the locking force of the locking wire member 13 on the medical wire 21; and the inner side surface 1251 of the second action portion is horizontal in the cross section, so that the corresponding surface of the locking wire member 13 after being locked by the second action portion 125 is flat, and there is no interlocking structure between the second action portion 125 and the locking wire member 13.

[0113] Therefore, in this embodiment, after the active member 15 drives the driven member 16 to move in the distal direction X and the driven member 16 and the first action part 124 are reset, the inner side surface 1241 of the first action part is separated from the thread locking member 13, and there is no interlocking structure between the second action part 125 and the thread locking member 13. Therefore, after the thread locking and cutting is completed, when the thread locking and cutting device 10 is withdrawn from the body, it is easy for the thread locking and cutting device 10 to release the thread locking member 13, and the operator does not need to perform additional operations or adjustments, thereby simplifying the operation process. The risk of the thread locking member 13 being stuck or unable to be released due to improper operation is reduced, thereby reducing the possibility of operating errors.

[0114] like Figures 3 to 5 As shown, in the embodiment of the present invention, in the cross section parallel to the distal direction X, the inner side surface 1241 of the first action portion and the inner side surface 1251 of the second action portion are both parallel to the distal direction X. In this embodiment, the inner side surface 1241 of the first action portion and the inner side surface 1251 of the second action portion are both horizontal in the cross section, so that the locking wire member 13 after being locked by the first action portion 124 and the second action portion 125 is flat, thereby reducing the internal space of the locking wire member 13 and increasing the locking force of the locking wire member 13 on the medical wire 21, and there is no interlocking structure between the first action portion 124, the second action portion 125 and the locking wire member 13.

[0115] Therefore, after the locking and cutting is completed, when the locking and cutting device 10 is withdrawn from the body, it is easy for the locking and cutting device 10 to release the locking member 13, and the operator does not need to perform additional operations or adjustments, thereby simplifying the operation process. The risk of the locking member 13 being stuck or unable to be released due to improper operation is reduced, thereby reducing the possibility of operating errors.

[0116] like Figures 2 to 4 As shown, in the embodiment of the present invention, in a cross section parallel to the distal direction X, a third accommodation space 165 is formed between the extension section 162 and the extrusion portion 164, and the first arm 122 and the first action portion 124 are embedded in the third accommodation space 165;

[0117] Among them, an angle α is formed between the inner side surface 1641 of the extrusion portion and the inner side surface 1621 of the extension section, and an angle β is formed between the outer side surface 1242 of the first action portion and the outer side surface 1222 of the first arm, 180°>α>90°, 180°>β>90°, α=β.

[0118] In this embodiment, the angle α and the angle β are both greater than 90°, so that the extrusion portion 164 and the first action portion 124 can better disperse the extrusion force during the extrusion process, avoiding the situation of excessive local stress and reducing stress concentration. This helps to improve the deformation resistance of the first arm 122 and the first action portion 124 and avoid plastic deformation.

[0119] In this embodiment, the angle α and the angle β are both smaller than 180°, which can shorten the length of the extension section 162 and the first arm 122, prevent the extension section 162 and the first arm 122 from protruding from the housing 11, and reduce the length of the locking and cutting device 10, which helps to miniaturize the structure.

[0120] In this embodiment, the angle β is greater than 90°, so that the extrusion portion 164 can extrude the first action portion 124 along a smoother path during the linear movement, reducing the force required to move the extrusion portion 164, making the operation convenient; at the same time, it reduces the energy loss during the extrusion process and further improves the extrusion efficiency.

[0121] In this embodiment, by making the angle α and the angle β both obtuse, and α=β, the first arm 122 and the first action part 124 are embedded in the third accommodation space 165 with an obtuse angle in the cross section, thereby improving the space utilization rate of the third accommodation space 165, making the internal structure of the locking and cutting device compact, and facilitating the miniaturization of the structure; and making the combination of the first arm 122 and the first action part 124 and the combination of the extension section 162 and the extrusion part 164 consistent in the transverse direction (i.e., the distal direction X) and the longitudinal direction (i.e., the direction perpendicular to the distal direction X), avoiding the combination of the first arm 122 and the first action part 124 and the combination of the extension section 162 and the extrusion part 164 being larger in length and width. At the same time, α=β, increasing the contact area between the extrusion part 164 and the first action part 124, being able to more effectively transmit pressure, thereby improving the extrusion efficiency. And α=β, so that after the first arm 122 and the first acting portion 124 are embedded in the third accommodating space 165 which is obtuse in the cross section, they will be subjected to extrusion forces from multiple directions. By applying multi-dimensional extrusion forces on the first arm 122 and the first acting portion 124, it helps to prevent the first arm 122 and the first acting portion 124 from slipping or shifting during the extrusion process, thereby enhancing the stability of the extrusion.

[0122] In the embodiment of the present invention, 160°>α>110°, °160>β>110°.

[0123] In the embodiment of the present invention, 160°>α>140°, 160°>β>140°.

[0124] In the embodiment of the present invention, α=β=154°.

[0125] like Figure 4 As shown, in an embodiment of the present invention, in a cross section parallel to the distal direction X, the first acting portion 124 has a first inner side surface 1243 and a second inner side surface 1244, the first inner side surface 1243 of the first acting portion is used to contact the locking wire member 13, the first inner side surface 1243 of the first acting portion is connected to the inner side surface 1221 of the first support arm through the second inner side surface 1244 of the first acting portion, and an angle γ is formed between the second inner side surface 1244 of the first acting portion and the inner side surface 1221 of the first support arm, 180°>γ>90°, and γ<β.

[0126] In this embodiment, 180°>γ>90°, so that when the extrusion portion 164 squeezes the outer side surface 1242 of the first acting portion, the first arm 122 and / or the first acting portion 124 can store more elastic potential energy during the deformation process; when the extrusion portion 164 removes the extrusion force applied, the elastic potential energy stored in the first arm 122 and / or the first acting portion 124 can cause the first arm 122 and / or the first acting portion 124 to return to the original shape faster, thereby improving its anti-deformation ability.

[0127] Moreover, the present embodiment makes γ<β, thus avoiding the defect that the length of the first inner side surface 1243 of the first action portion is reduced due to the angle γ being too large, and then the first action portion 124 needs to be made of a material with higher hardness to ensure the strength of the first action portion 124, thereby increasing the cost. The present embodiment makes γ<β, thus ensuring the length of the first inner side surface 1243 of the first action portion, and then ensuring the volume of the first action portion 124, so that under the condition of equal strength, the present embodiment can use a material with lower hardness to make the first action portion 124, thereby reducing the production cost.

[0128] Furthermore, in this embodiment, 90°<γ is achieved, so that during the extrusion process, the first arm 122 and the first action portion 124 can better disperse stress, avoid excessive local stress, reduce stress concentration, and avoid plastic deformation.

[0129] In the embodiment of the present invention, 150°>γ>100°.

[0130] In the embodiment of the present invention, 140°>γ>120°.

[0131] In the embodiment of the present invention, γ=135°.

[0132] like Figures 1 to 7 As shown, in an embodiment of the present invention, in a cross section parallel to the distal direction X, the length of the inner side surface 1241 of the first action portion is between 1.5 mm and 4.5 mm, and the ratio of the length of the inner side surface 1241 of the first action portion to the length of the first arm 122 is between 15% and 45%.

[0133] In this embodiment, the length of the inner side surface 1241 of the first action portion is between 1.5 mm and 4.5 mm, so that the first action portion 124 can be applied to thread lock members 13 of different lengths, thereby expanding the scope of application. In the embodiment of the present invention, the length of the inner side surface 1241 of the first action portion is between 1.5 mm and 2.5 mm. In the embodiment of the present invention, the length of the inner side surface 1241 of the first action portion is 2 mm.

[0134] Since a shorter inner side surface 1241 of the first action portion will cause the thread locking member 13 to be unstable during the locking process, and an excessively long inner side surface 1241 of the first action portion will increase the complexity of the locking operation. In this embodiment, the length ratio of the inner side surface 1241 of the first action portion to the first arm 122 is appropriate, which can ensure that the thread locking member 13 remains stable during the locking process, and at the same time takes into account both the locking stability and the convenience of the locking operation.

[0135] like Figures 1 to 7 As shown, in an embodiment of the present invention, in a cross section parallel to the distal direction X, the length of the inner side surface 1251 of the second action portion is between 1.5 mm and 4.5 mm, and the ratio of the length of the inner side surface 1251 of the second action portion to the length of the second arm 123 is between 15% and 45%.

[0136] In this embodiment, the length of the inner side surface 1251 of the second action portion is between 1.5 mm and 4.5 mm, so that the second action portion 125 can be applied to thread lock members 13 of different lengths, thereby expanding the scope of application. In the embodiment of the present invention, the length of the inner side surface 1251 of the second action portion is between 1.5 mm and 2.5 mm. In the embodiment of the present invention, the length of the inner side surface 1251 of the second action portion is 2 mm.

[0137] Since a shorter inner side surface 1251 of the second action portion will cause the thread locking member 13 to be unstable during the locking process, and an overly long inner side surface 1251 of the second action portion will increase the complexity of the locking operation. In this embodiment, the length ratio of the inner side surface 1251 of the second action portion to the second arm 123 is appropriate, which can ensure that the thread locking member 13 remains stable during the locking process, and at the same time takes into account the locking stability and the convenience of the locking operation.

[0138] like Figures 1 to 7 As shown, in an embodiment of the present invention, in a cross section parallel to the distal direction X, the height of the base 121 is between 1.6 mm and 2.7 mm, the height of the first arm 122 is between 0.25 mm and 0.75 mm, the height of the second arm 123 is between 0.25 mm and 0.75 mm, and the gap formed between the first arm 122 and the second arm 123 is between 0.8 mm and 1.6 mm, wherein the height of the first arm 122 is greater than or equal to the height of the second arm 123.

[0139] In the embodiment of the present invention, the gap formed between the first acting portion 124 and the second acting portion 125 is between 0.7 mm and 1.5 mm.

[0140] In the embodiment of the present invention, a gap of 1.2 mm is formed between the first support arm 122 and the second support arm 123 , and a gap of 1.1 mm is formed between the first action portion 124 and the second action portion 125 .

[0141] In this embodiment, the gap formed between the first support arm 122 and the second support arm 123 is moderate, which not only avoids the size of the locking thread cutting device 10 being too large, but also makes the gap formed between the first action part 124 and the second action part 125 larger than the height of the thread locking member 13, so that after the locking thread cutting is completed and the locking thread cutting device 10 is withdrawn from the body, it is easy for the locking thread cutting device 10 to release the thread locking member 13, and the operator does not need to perform additional operations or adjustments, thereby simplifying the operation process and avoiding the risk of the thread locking member 13 being stuck or unable to be released due to the small gap formed between the first action part 124 and the second action part 125, thereby reducing the possibility of surgical failure.

[0142] At the same time, this embodiment makes the height of the first arm 122 greater than or equal to the height of the second arm 123, thereby increasing the structural strength and structural rigidity of the second arm 123, so that the first arm 122 can better resist extrusion deformation. At the same time, the larger thickness of the first arm 122 can better disperse stress and reduce stress concentration when subjected to extrusion force.

[0143] In the embodiment of the present invention, the height of the first arm 122 is between 0.4 mm and 0.6 mm, and the height of the second arm 123 is between 0.3 mm and 0.5 mm.

[0144] In the embodiment of the present invention, the height of the first arm 122 is 0.5 mm, and the height of the second arm 123 is 0.4 mm.

[0145] like Figure 2 and Fig. 9 As shown, in an embodiment of the present invention, the second arm 123 is bent toward the side wall where the first through hole 113 is located to form a bending section 127 and a second action portion 125, and a third through hole 128 is provided on the second arm 123 and / or the bending section 127. After the medical wire 21 passes through the locking wire piece 13 and the third through hole 128, it extends out through the first through hole 113.

[0146] A fourth accommodating space 129 is formed between the second arm 123 , the bending section 127 , the second action portion 125 and the side wall where the first through hole 113 is located. The cutting member 14 is arranged on the active member 15 , and is used to move to the fourth accommodating space and cut the medical line 21 under the action of the active member 15 .

[0147] In this embodiment, the third through hole 128 is provided on the second arm 123 and / or the bending section 127, so that the medical line 21 can be extended from the first through hole 113, thereby reducing the difficulty of operation when pre-installing the medical line 21. At the same time, in this embodiment, the second arm 123, the bending section 127 and the second action portion 125 are reasonably planned to provide a third accommodating space 165 for the cutting member 14, thereby improving the utilization rate of the internal space of the housing 11, reducing the overall size of the locking and cutting device 10, and helping to miniaturize the locking and cutting device 10.

[0148] like Figure 2 As shown, in the embodiment of the present invention, the second arm 123 and the bending section 127 are both provided with a third through hole 128 , and the third through hole 128 on the second arm 123 is connected to the third through hole 128 on the bending section 127 .

[0149] like Fig. 9 As shown, in the embodiment of the present invention, the distal end wall 114 of the shell and the side wall of the shell 11 are detachably connected, and the end cover at the distal end of the shell 11 and the second action portion 125 are integrally formed.

[0150] like Figures 1 to 18 As shown, the present invention also provides an occluder system, comprising:

[0151] The occluder 20 and the locking and cutting device 10 of any of the above embodiments, the occluder 20 is provided with a medical thread 21, one end of the medical thread 21 is arranged on the occluder 20, and the other end of the medical thread 21 enters the first accommodating space 111 of the locking and cutting device 10 through the locking thread member 13 of the locking and cutting device 10 and extends out through the first through hole 113 of the locking and cutting device 10;

[0152] Handheld device 30;

[0153] The connecting device 40 includes a connecting member 41 and a linkage member 42. The two ends of the connecting member 41 are respectively connected to the housing 11 of the locking and cutting device 10 and the handheld device 30; one end of the linkage member 42 extends into the housing 11 and is connected to the active member 15, and the other end is connected to the handheld device 30. The linkage member 42 is used to drive the active member 15 to move under the action of the handheld device 30.

[0154] The occluder system provided in this embodiment enables the operator to quickly complete the locking and cutting of the medical line 21 through the locking and cutting device 10, greatly simplifying the locking and cutting steps during the operation, thereby shortening the operation time and improving the overall operation efficiency. At the same time, the locking and cutting device 10 can ensure that the medical line 21 is stably locked, avoiding locking failure caused by misoperation during the operation, and can reduce damage to surrounding tissues, reducing the risk of complications such as postoperative infection and bleeding. And the locking and cutting device 10 is suitable for a variety of interventional and minimally invasive surgeries, and can meet the needs of different surgical scenarios.

[0155] In the embodiment of the present invention, a connecting hole is provided on the abutting section 161 , and after the linkage member 42 extends into the housing 11 , it passes through the abutting section 161 through the connecting hole and is connected to the active member 15 .

[0156] like Figures 16 to 18 As shown, in the embodiment of the present invention, the occluder 20 is further configured with a withdrawal line 22, a fixing member 44 is provided on the connecting member 41, the fixing member 44 is sleeved on the connecting member 41, one end of the withdrawal line 22 is provided on the fixing member 44, and the other end passes through the occluder 20 and enters the first accommodating space 111 and extends out through the first through hole 113, and is finally provided on the fixing member 44.

[0157] In this embodiment, the withdrawal line 22 is arranged on the fixing member 44, and the fixing member 44 is arranged on the connecting member 41, so that the withdrawal line 22 is easy to install, and when the locking and cutting device 10 is withdrawn, the occluder system can drive the withdrawal line 22 to withdraw synchronously through the connecting member 41.

[0158] like Figures 16 to 18 As shown, in the embodiment of the present invention, the fixing member 44 is provided with a first channel 441 and a second channel 442. After the withdrawal line 22 passes through the first channel 441 and the occluder 20, it enters the first accommodating space 111 and extends through the first through hole 113, and finally passes through the second channel 442. The first end of the withdrawal line 22 and the second end of the withdrawal line 22 are respectively provided with a first clamping member 221 and a second clamping member 222. The first end of the withdrawal line 22 is clamped with the first channel 441 through the first clamping member 221, and the second end of the withdrawal line 22 is clamped with the second channel 442 through the second clamping member 222.

[0159] In the embodiment of the present invention, the outer diameter of the first locking member 221 is greater than the inner diameter of the first channel 441 , and the outer diameter of the second locking member 222 is greater than the inner diameter of the second channel 442 .

[0160] In the embodiment of the present invention, the first channel 441 and the second channel 442 are relatively arranged on the connecting member 41 , so that the two ends of the withdrawal line 22 are relatively arranged on both sides of the connecting member 41 .

[0161] like Figures 16 to 18As shown, in the embodiment of the present invention, the fixing member 44 has a clamping section 443 and an attachment section 444, wherein the clamping section 443 is located at the distal end of the fixing member 44, and the attachment section 444 is located at the proximal end of the fixing member 44, the side wall thickness of the clamping section 443 is greater than the side wall thickness of the attachment section 444, and the side wall of the clamping section 443 is provided with a first channel 441 and a second channel 442, and the withdrawal line 22 passes through the first channel 441 and the occluder 20, enters the first accommodating space 111, and extends through the first through hole 113, and finally passes through the second channel 442. The first end of the withdrawal line 22 and the second end of the withdrawal line 22 are respectively provided with a first clamping member 221 and a second clamping member 222, and the first end of the withdrawal line 22 is clamped with the first channel 441 through the first clamping member 221, and the second end of the withdrawal line 22 is clamped with the second channel 442 through the second clamping member 222.

[0162] like Fig. 9 As shown, in the embodiment of the present invention, the second through hole 112 at the distal end of the housing 11 is a cross hole, the distal end of the locking wire member 13 is clamped in the longitudinal hole position of the cross hole, and the withdrawal wire 22 enters the first accommodating space 111 through the transverse hole position of the cross hole and extends through the first through hole 113. The cross-shaped second through hole 112 is provided in this embodiment to facilitate the pre-installation of the withdrawal wire 22, thereby reducing the difficulty of pre-installation of the withdrawal wire 22; at the same time, the cross-shaped second through hole 112 also facilitates the pre-installation of the locking wire member 13, and can avoid the locking wire member falling from the second through hole 112 due to the pulling of external force during the entire surgical operation of the occluder system, thereby causing the risk of surgical failure.

[0163] like Figures 13 to 18 As shown, in an embodiment of the present invention, the connecting device 40 also includes a sleeve member 43, which is sleeved on the outside of the connecting member 41, and the fixing member 44 is located between the sleeve member 43 and the connecting member 41. One end of the withdrawal line 22 is set on the fixing member 44, and the other end extends out of the sleeve member 43, passes through the occluder 20, enters the first accommodating space 111 through the second through hole 112 of the shell 11, and extends out through the first through hole 113, and then extends into the sleeve member 43 again and is finally set on the fixing member 44.

[0164] In this embodiment, the end of the withdrawal line 22 is stored inside the sleeve member 43 through the sleeve member 43, so as to prevent the withdrawal line 22 from being damaged by external factors.

[0165] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

[0166] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. Locking tangent device, characterized in that: include: A housing, wherein a first accommodation space is formed in the housing, and a first through hole communicating with the first accommodation space is provided on a side wall of the housing; A locking member and a locking member, wherein the locking member is located in the first accommodating space, the locking member has a locking portion at the distal end, the locking member has a proximal end located on the locking portion, the locking member is used to allow a medical wire to pass through, and the medical wire enters the first accommodating space from the locking member and extends out through the first through hole; a cutting piece, wherein the cutting piece is located in the first accommodation space; An active member and a driven member, wherein both the active member and the driven member are located in the first accommodating space, and the active member is configured to drive the driven member to move toward the proximal direction under the action of an external force, so that the driven member drives the locking part to lock the wire locking member; The active member is further configured to drive the driven member and the cutting member to move toward the distal direction under the action of an external force, so that the driven member and the locking portion are reset and the cutting member cuts the medical wire at the first through hole; Wherein, the locking member, the cutting member, the active member and the driven member are all located in the first accommodating space when moving.

2. The locking thread cutting device according to claim 1, characterized in that: The follower has an abutting section and an extending section, a second accommodating space is formed between the abutting section, the extending section and the side wall where the first through hole is located, the locking member is located in the second accommodating space, the distal end of the extending section protrudes toward the distal end of the locking member to form an extrusion portion, and the extrusion portion contacts the distal end of the locking member; The distal end of the active member is close to the locking member, and the proximal end of the active member is close to the abutting section. The active member is configured to move toward the proximal direction under the action of an external force to contact the driven member and drive the driven member to move toward the proximal direction, so that the extrusion part squeezes the distal end of the locking member, so that the locking part locks the wire locking member; Wherein, the extrusion part is located in the first accommodating space when moving.

3. The locking thread cutting device according to claim 2, characterized in that: The locking member comprises a base, a first arm and a second arm, the base is arranged on the housing, the first arm and the second arm are extended in the distal direction from the base, the first arm forms a first action portion at the distal end, the second arm forms a second action portion at the distal end, the first action portion and the second action portion constitute the locking portion, and the extrusion portion abuts against the first action portion; In a cross section parallel to the distal direction, the inner side surface of the second action portion is parallel to the distal direction; or, in a cross section parallel to the distal direction, the inner side surface of the first action portion and the inner side surface of the second action portion are both parallel to the distal direction.

4. The locking thread cutting device according to claim 3, characterized in that: In a cross section parallel to the distal end direction, a third accommodating space is formed between the extension section and the extrusion portion, and the first support arm and the first action portion are embedded in the third accommodating space; Among them, an angle α is formed between the inner side surface of the extrusion portion and the inner side surface of the extension section, and an angle β is formed between the outer side surface of the first action portion and the outer side surface of the first arm, 180°>α>90°, 180°>β>90°, α=β.

5. The locking thread cutting device according to claim 4, characterized in that: In a cross section parallel to the distal direction, the first acting portion has a first inner side surface and a second inner side surface, the first inner side surface of the first acting portion is used to contact the locking wire member, the first inner side surface of the first acting portion is connected to the inner side surface of the first support arm through the second inner side surface of the first acting portion, and an angle γ is formed between the second inner side surface of the first acting portion and the inner side surface of the first support arm, 180°>γ>90°, and γ<β.

6. The locking thread cutting device according to claim 3, characterized in that: In a cross section parallel to the distal end direction, the length of the inner side surface of the first action portion is between 1.5 mm and 4.5 mm, and the ratio of the length of the inner side surface of the first action portion to the length of the first arm is between 15% and 45%; and / or, in a cross section parallel to the distal direction, the length of the inner side surface of the second action portion is between 1.5 mm and 4.5 mm, and the ratio of the length of the inner side surface of the second action portion to the length of the second arm is between 15% and 45%; And / or, in a cross section parallel to the distal direction, the height of the base is between 1.6mm-2.7mm, the height of the first arm is between 0.25mm-0.75mm, the height of the second arm is between 0.25mm-0.75mm, and the gap formed between the first arm and the second arm is between 0.8mm-1.6mm, wherein the height of the first arm is greater than or equal to the height of the second arm.

7. The locking thread cutting device according to claim 3, characterized in that: The second support arm is bent toward the side wall where the first through hole is located to form a bent section and the second action portion, and a third through hole is provided on the second support arm and / or the bent section. The medical wire passes through the locking wire member and the third through hole and then extends out through the first through hole; A fourth accommodating space is formed between the second arm, the bending section, the second action portion and the side wall where the first through hole is located. The cutting member is arranged on the active member, and the cutting member is used to move to the fourth accommodating space and cut the medical wire under the action of the active member.

8. The locking thread cutting device according to claim 2, characterized in that: A positioning portion is provided on the extension section, and the positioning portion is located between the active member and the locking member. The active member is configured to move toward the distal direction under the action of an external force to contact the positioning portion and drive the driven member to move toward the distal direction to reset the driven member and the locking portion.

9. The locking thread cutting device according to claim 1, characterized in that: The shell has a proximal end wall and a distal end wall, and the first accommodation space is formed between the proximal end wall of the shell, the distal end wall of the shell and the side wall of the shell, so as to restrict the locking member, the cutting member, the active member and the driven member within the first accommodation space; a second through hole is provided on the distal end wall of the shell, and the proximal end of the locking member contacts the locking portion after passing through the second through hole; And / or, a first stopper is provided on the housing, and the first stopper is used to abut against the active member or the driven member when the active member drives the driven member and the cutting member to move toward the distal direction, so that the active member, the driven member and the cutting member are all located in the first accommodating space; And / or, a second limit member is provided on the follower, and the second limit member is used to abut against the locking member when the active member drives the follower and the cutting member to move in the distal direction, so that the active member, the follower and the cutting member are all located in the first accommodating space.

10. An occluder system, characterized in that: include: An occluder and a locking and cutting device according to any one of claims 1 to 9, wherein the occluder is provided with a medical wire, one end of the medical wire is arranged on the occluder, and the other end of the medical wire enters the first accommodating space of the locking and cutting device through the locking wire member of the locking and cutting device and extends out through the first through hole of the locking and cutting device; Handheld devices; The connecting device includes a connecting member and a linkage member, wherein the two ends of the connecting member are respectively connected to the shell of the locking and cutting device and the handheld device; one end of the linkage member extends into the shell and is connected to the active member, and the other end is connected to the handheld device, and the linkage member is used to drive the active member to move under the action of the handheld device.

11. An occluder system according to claim 10, characterized in that: The occluder is also provided with a withdrawal line, a fixing piece is provided on the connecting piece, the fixing piece is sleeved on the connecting piece, one end of the withdrawal line is provided on the fixing piece, and the other end passes through the occluder, enters the first accommodating space and extends out through the first through hole, and is finally provided on the fixing piece; Alternatively, the occluder is further provided with a withdrawal line, a fixing piece is provided on the connecting piece, the fixing piece is sleeved on the connecting piece, a first channel and a second channel are provided on the fixing piece, the withdrawal line passes through the first channel and the occluder, enters the first accommodating space, extends through the first through hole, and finally passes through the second channel; a first clamping piece and a second clamping piece are respectively provided at both ends of the withdrawal line, the first end of the withdrawal line is clamped with the first channel through the first clamping piece, and the second end of the withdrawal line is clamped with the second channel through the second clamping piece; Alternatively, the occluder is further provided with a withdrawal line, a fixing piece is arranged on the connecting piece, the fixing piece is sleeved on the connecting piece, the fixing piece has a clamping section and an attachment section, the side wall thickness of the clamping section is greater than the side wall thickness of the attachment section, a first channel and a second channel are arranged on the side wall of the clamping section, after the withdrawal line passes through the first channel and the occluder, it enters the first accommodating space and extends out through the first through hole, and finally passes through the second channel; the two ends of the withdrawal line are respectively provided with a first clamping piece and a second clamping piece, the first end of the withdrawal line is clamped with the first channel through the first clamping piece, and the second end of the withdrawal line is clamped with the second channel through the second clamping piece.

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