Locking and cutting integrated device of medical wire, wire hooking device and locking and cutting integrated system

Abstract

The invention provides a medical wire locking and cutting integrated device, a wire hooking device and a locking and cutting integrated system.The locking and cutting integrated device comprises a shell, the shell is provided with a communicating opening communicating with an inner cavity of the shell, and the inner cavity is provided with a first inner surface and a second inner surface which are sequentially arranged in the first direction; the first inner surface is obliquely arranged relative to the second inner surface, so that the far end of the inner cavity is open; the wire locking assembly comprises a locking piece and a wire fixing piece, the locking piece is located in the shell, locking teeth and a locking groove are arranged on the locking piece, the wire fixing piece is located between the locking teeth and the locking groove, and the locking piece is used for moving in the first direction under the action of external force; the locking teeth and the locking grooves get close to each other under the action of the first inner surface and / or the second inner surface, so that the wire fixing piece is deformed; and the wire cutting assembly comprises a wire cutting piece, and the wire cutting piece is located in the shell and used for moving to the conduction opening in the second direction under the action of external force. The suture locking assembly and the suture cutting assembly are integrated, and the surgical operation difficulty is reduced.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a medical wire locking and cutting integrated device, a wire hooking device and a locking and cutting integrated system. Background Art

[0002] During surgery, it is often necessary to tie knots and fix medical threads (including but not limited to suture threads, repair threads used as artificial chordae, repair threads for edge-to-edge repair of valves, etc.) and remove excess medical threads. Traditional surgical operations are performed by doctors manually tying knots and fixing them under direct vision, and then removing excess medical threads. With the advancement of technology, various minimally invasive and interventional surgeries are becoming increasingly common, such as laparoscopic surgery and transcatheter interventional surgery. In such surgeries, operators are usually required to perform remote operations outside the patient's body through a smaller operating window to tie knots and remove excess medical threads inside the patient's body.

[0003] The existing thread locking device and thread cutting device are usually two independent instruments. Generally, the thread locking device is first inserted into the body, the locking nail in the thread locking device is operated to fix the medical thread, and then the thread locking device is withdrawn, and the thread cutting device is operated to insert into the body to cut off the excess medical thread. However, the thread locking device and the thread cutting device are inserted and removed from the patient's body separately, which makes the operation complicated and the whole operation time long. Summary of the invention

[0004] In order to overcome the defects in minimally invasive surgery and interventional surgery, in which the wire locking device and the wire cutting device enter and exit the patient's body separately, resulting in complicated surgical operations and a long entire operation time, the present application provides a medical wire locking and cutting integrated device, a wire hooking device and a locking and cutting integrated system.

[0005] The specific technical solutions are as follows:

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

[0007] A shell, wherein the shell forms an inner cavity, the shell is provided with a conducting port communicating with the inner cavity, the inner cavity has a first inner surface and a second inner surface sequentially arranged along a first direction, the first direction is a direction from the distal end of the shell to the proximal end of the shell, the first inner surface is inclined relative to the second inner surface so that the distal end of the inner cavity is open;

[0008] A locking wire assembly, comprising a locking member and a wire fixing member, wherein the locking member is located in the housing, the locking member is provided with a locking tooth and a locking groove, the wire fixing member is located between the locking tooth and the locking groove, the wire fixing member is used to allow a medical wire to pass through, the medical wire enters the inner cavity from the wire fixing member and extends out through the guide port, and the locking member is used to move along the first direction under the action of an external force, so that the locking tooth and the locking groove are close to each other under the action of the first inner surface and / or the second inner surface, so that the wire fixing member is deformed and locks the medical wire; wherein, in a cross section parallel to the first direction, the contact point between the locking tooth and the wire fixing member is located at any position between the middle of the wire fixing member and close to the proximal end of the wire fixing member;

[0009] The wire cutting assembly includes a wire cutting piece, which is located in the shell and is used to move to the conducting port along a second direction under the action of an external force to cut off the medical wire; wherein the second direction is the opposite direction of the first direction.

[0010] Wherein, the locking member is used to move along the first direction under the action of an external force, so that the locking teeth and the locking groove are close to each other under the action of the first inner surface and / or the second inner surface, so that the wire fixing member is deformed into a V-shape and locks the medical wire;

[0011] And / or, in a cross section parallel to the first direction, the two side walls of the locking tooth form an angle α, and 0°≤α≤90°, and the end of the locking tooth close to one end of the wire fixing member has a curvature K1, and 8mm -1 ≤K1≤12mm -1 The two side walls of the locking groove form an angle β, and 0°≤β≤90°, the end of the locking groove away from the end of the fixed wire member has a curvature K2, and 2mm -1 ≤K2≤3mm -1 .

[0012] Among them, in the cross section parallel to the first direction, the end of the locking tooth close to one end of the wire fixing member is arranged correspondingly to the end of the locking groove away from one end of the wire fixing member, and the end of the locking tooth close to one end of the wire fixing member is a first arc, and the arc number of the first arc is θ 1 The end of the locking groove away from the fixed wire member is a second arc, and the arc of the second arc is θ 2 ;

[0013] where θ 1 =θ 2 .

[0014] Wherein, in a cross section parallel to the first direction, two side walls of the locking tooth are arranged in one-to-one correspondence with two side walls of the locking groove, and α=β;

[0015] When the locking tooth and the locking groove approach each other under the action of the first inner surface and / or the second inner surface, causing the wire fixing member to deform and lock the medical wire, a first distance L1 is formed between an end of the locking tooth close to one end of the wire fixing member and an end of the locking groove away from one end of the wire fixing member, a second distance L2 is formed between a corresponding side wall of the locking tooth and a side wall of the locking groove, and a third distance L3 is formed between the corresponding other side wall of the locking tooth and the other side wall of the locking groove;

[0016] Among them, L1=L2=L3.

[0017] Wherein, in a cross section parallel to the first direction, the locking tooth is close to the proximal end of the wire fixing member, and the ratio of the distance between the contact point between the locking tooth and the proximal end of the wire fixing member and the distal end of the wire fixing member to the length of the wire fixing member is between 50% and 90%;

[0018] And / or, in a cross section parallel to the first direction, the locking groove is close to the proximal end of the wire fixing member, and the ratio of the notch length of the locking groove to the length of the wire fixing member is between 40% and 90%.

[0019] Wherein, the locking member comprises a base and a first locking arm and a second locking arm extending outward from the base, the first locking arm is provided with the locking tooth on one side close to the second locking arm, and the second locking arm is provided with the locking groove on one side close to the first locking arm;

[0020] A notch is formed at the distal end of the first locking arm to form a gap between the distal ends of the first locking arm and the second locking arm; in a cross section parallel to the first direction, when the locking teeth and the locking groove approach each other under the action of the first inner surface and / or the second inner surface, causing the wire fixing member to deform and lock the medical wire, the length of the gap is between 0.5mm-2mm, and the height of the gap is between 0.5mm-2mm.

[0021] Wherein, the shell has a first outer surface, a second outer surface and a third outer surface sequentially arranged along a first direction;

[0022] The diameter of the second outer surface decreases successively along the first direction, and in a cross section parallel to the first direction, the angle between the second outer surface and the first outer surface is between 91° and 170°, and the angle between the second outer surface and the third outer surface is between 91° and 170°;

[0023] And / or, a ratio of a diameter of the third outer surface to a diameter of the first outer surface is between 60% and 85%.

[0024] Part of the first outer surface is located outside the first inner surface, another part of the first outer surface, the second outer surface and the third outer surface are located outside the second inner surface, and the conducting port is used to connect the inner cavity with the outside through the second outer surface and the second inner surface.

[0025] Among them, a boss extends outward from the distal end of the wire fixing piece, and in a cross section parallel to the first direction, when the locking teeth and the locking groove approach each other under the action of the first inner surface and / or the second inner surface, causing the wire fixing piece to deform and lock the medical wire, the outer diameter of the boss is greater than the height of the gap.

[0026] Wherein, the tangent piece is arranged on the locking piece and is arranged around the outer circumference of the locking piece, and the locking piece is used to drive the tangent piece to move synchronously under the action of external force; wherein, the length of the tangent piece and the length of the locking piece have a ratio between 40% and 70%.

[0027] Wherein, the distal end of the shell has a rounded structure;

[0028] And / or, the proximal end of the cutting piece has a rounded structure;

[0029] And / or, the inner surface of the wire fixing member is provided with one of a threaded protrusion, a threaded groove, a plurality of protrusions arranged at intervals, and a plurality of grooves arranged at intervals, so that the inner surface of the wire fixing member forms a concave-convex structure;

[0030] and / or, in a plane parallel to the first direction, a projection pattern of the locking element completely overlaps a projection pattern of the housing, so that the locking element is completely located in the housing;

[0031] and / or, the angle formed between the first inner surface and the second inner surface is between 130° and 170°;

[0032] And / or, the distance between the distal end of the cutting piece and the distal end of the conducting opening is between 2 mm and 4 mm.

[0033] The present application also provides a medical thread hooking device, which is used in conjunction with any of the above-mentioned medical thread locking and cutting integrated devices, wherein the medical thread hooking device comprises a thread hooking member and a control member;

[0034] The hook wire piece passes through the conducting port of the medical wire locking and cutting integrated device and the wire fixing piece of the medical wire locking and cutting integrated device and exposes the distal end of the shell of the medical wire locking and cutting integrated device, and the part of the hook wire piece exposed at the distal end of the shell forms a hook wire structure, and the hook wire piece is configured to be driven by the control part to drive the medical wire from the wire fixing piece into the inner cavity of the medical wire locking and cutting integrated device through the hook wire structure and extend out through the conducting port.

[0035] Wherein, a clamping groove is arranged on the side wall of the control member, and the clamping groove extends along the first direction and passes through the control member.

[0036] Wherein, the line hooking device also includes a limiting member, on which a limiting groove is arranged, and the limiting member is used to contact the line hooking structure through the limiting groove to limit the displacement of the line hooking structure; wherein the cross-section of the limiting groove is a combination of more than two types of straight lines, broken lines and wavy lines.

[0037] The present application also provides a medical wire locking and cutting integrated system, comprising an operating device, a connecting assembly, and the medical wire locking and cutting integrated device as described in any one of the above items, and the medical wire hooking device as described in any one of the above items;

[0038] The connection component comprises:

[0039] A connecting member, wherein the distal end of the connecting member is connected to the housing of the locking and cutting integrated device, and the proximal end of the connecting member is connected to the operating device;

[0040] A transmission member, wherein the transmission member is arranged in the connecting member, the distal end of the transmission member extends into the housing and is connected to the locking member and / or the tangent member, the proximal end of the transmission member is connected to the operating device, and the transmission member is used to drive the locking member and / or the tangent member to move under the action of the operating device.

[0041] This application has at least the following beneficial effects:

[0042] The present application provides a locking and cutting integrated device for a medical line, comprising: a shell, the shell is formed with an inner cavity, a conducting port connected to the inner cavity is arranged on the shell, the inner cavity has a first inner surface and a second inner surface arranged in sequence along a first direction, the first direction is the direction from the distal end of the shell to the proximal end of the shell, the first inner surface is inclined relative to the second inner surface so that the distal end of the inner cavity is open; a locking wire assembly, comprising a locking piece and a wire fixing piece, the locking piece is located in the shell, a locking tooth and a locking groove are arranged on the locking piece, the wire fixing piece is located between the locking tooth and the locking groove, the wire fixing piece is used to allow the medical line to pass through, and the medical line enters the inner cavity from the wire fixing piece The locking piece is used to move along the first direction under the action of external force, so that the locking teeth and the locking groove are close to each other under the action of the first inner surface and / or the second inner surface, so that the wire fixing piece is deformed and the medical wire is locked; wherein, in a cross section parallel to the first direction, the contact point between the locking teeth and the wire fixing piece is located at any position between the middle of the wire fixing piece and the proximal end of the wire fixing piece; a wire cutting assembly includes a wire cutting piece, which is located in the shell and is used to move along the second direction to the conducting port under the action of external force to cut off the medical wire; wherein the second direction is the opposite direction of the first direction.

[0043] The medical wire locking and cutting integrated device of the present application integrates a wire locking component and a wire cutting component, which reduces the number of times the instrument is replaced during surgery, reduces the difficulty of surgical operation, and thus shortens the operation time. At the same time, it reduces the risk increased by changing instruments, helps reduce surgical complications, and improves the success rate of surgery.

[0044] The present application chooses to shape the curved section at any position between the middle of the wire fixing piece and near the proximal end of the wire fixing piece. Compared with shaping the curved section at the distal end of the wire fixing piece, the present application reduces the pressure and deformation force required for the wire fixing piece to form the curved section, and effectively prevents the inappropriate shaping position of the curved section from causing the required pressure and deformation force to be large, causing irreversible deformation of the locking piece, resulting in the problem that the wire fixing piece is pressed by the locking piece after the tangent assembly is cut and cannot be smoothly detached from the inner cavity, thereby reducing the risk of surgical failure, making the locking operation of the wire fixing piece more convenient and efficient, and improving the operability and safety of the entire locking process.

[0045] The present application also provides a medical wire hooking device for use in conjunction with the above-mentioned medical wire locking and cutting integrated device. The wire hooking device includes a wire hooking piece and a control piece. The wire hooking piece passes through the conducting port and the wire fixing piece and is exposed at the distal end of the shell. The portion of the wire hooking piece exposed at the distal end of the shell forms a wire hooking structure. The wire hooking piece is configured to be driven by the control piece to drive the medical wire from the wire fixing piece into the inner cavity and extend out through the conducting port through the wire hooking structure.

[0046] The present application uses a wire hooking device to drive the medical wire from the wire fixing part into the inner cavity and extend it out through the guiding port, so that during the operation, there is no need to spend a lot of time and energy to thread the medical wire, and the medical wire can be quickly passed through the wire fixing part and the guiding port, which reduces the operation time and improves the overall efficiency of the operation. The wire hooking device drives the movement of the medical wire with high accuracy and strong reliability.

[0047] The present application also provides a medical wire locking and cutting integrated system, including an operating device, a connecting assembly, the above-mentioned medical wire locking and cutting integrated device and the above-mentioned medical wire hooking device; the connecting assembly includes: a connecting piece, the distal end of the connecting piece is connected to the shell of the locking and cutting integrated device, and the proximal end of the connecting piece is connected to the operating device; a transmission piece, the transmission piece is arranged in the connecting piece, the distal end of the transmission piece extends into the shell and is connected to the locking piece and / or the cutting piece, the proximal end of the transmission piece is connected to the operating device, and the transmission piece is used to drive the locking piece and / or the cutting piece to move under the action of the operating device.

[0048] The medical wire locking and cutting integrated system provided in this embodiment integrates a wire locking component, a wire cutting component, and a wire hooking device for medical wires, and is rich in functions, so that during the operation, it is not necessary to spend a lot of time and energy on threading the medical wires, thereby improving the overall efficiency of the operation, and the wire hooking device drives the medical wires to move with high accuracy and high reliability. At the same time, the locking and cutting process of the medical wires is more automated, which is convenient for doctors to operate during the operation, reduces the manual operation of doctors during the operation, and reduces the replacement of instruments, thereby improving the efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] 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.

[0050] Figure 1 Schematic diagram of the structure of the medical wire locking and cutting integrated device provided in this embodiment Figure 1 ;

[0051] Figure 2 The cross-section of the medical wire locking and cutting integrated device provided in this embodiment parallel to the first direction is schematically shown. Figure 1 ;

[0052] Figure 3 for Figure 2 A partial enlarged view of the middle A area;

[0053] Figure 4 The cross-section of the medical wire locking and cutting integrated device provided in this embodiment parallel to the first direction is schematically shown. Figure 2;

[0054] Figure 5 for Figure 4 A partial enlarged view of the middle B area;

[0055] Figure 6 The cross-section of the medical wire locking and cutting integrated device provided in this embodiment parallel to the first direction is schematically shown. Figure 3 ;

[0056] Figure 7 for Figure 6 A partial enlarged view of the middle C area;

[0057] Figure 8 Schematic diagram of the structure of the medical wire locking and cutting integrated device provided in this embodiment Figure 2 ;

[0058] Fig. 9 The cross-section of the medical wire locking and cutting integrated device provided in this embodiment parallel to the first direction is schematically shown. Figure 4 ;

[0059] Fig.10 Schematic diagram of the structure of the medical wire locking and cutting integrated device provided in this embodiment Figure 3 ;

[0060] Fig.11 Schematic diagram of the structure of the medical wire locking and cutting integrated device provided in this embodiment Figure 4 ;

[0061] Fig.12 A schematic cross-sectional view of a wire fixing member of a medical wire provided in this embodiment;

[0062] Fig.13 The cross-section of the medical wire locking and cutting integrated device provided in this embodiment parallel to the first direction is schematically shown. Figure 5 ;

[0063] Fig.14 The cross-section of the medical wire locking and cutting integrated device provided in this embodiment parallel to the first direction is schematically shown. Figure 6 ;

[0064] Fig.15 Schematic diagram of the structure of the medical wire locking and cutting integrated device provided in this embodiment Figure 5 ;

[0065] Fig.16 Schematic diagram of the structure of the medical wire locking and cutting integrated system provided in this embodiment Figure 1 ;

[0066] Fig.17 Schematic diagram of the structure of the medical wire locking and cutting integrated system provided in this embodiment Figure 2 ;

[0067] Fig.18 Schematic diagram of the structure of the medical wire locking and cutting integrated system provided in this embodiment Figure 3 ;

[0068] Fig.19 A schematic diagram of the structure of the limiter provided in this embodiment;

[0069] Fig. 20 A schematic diagram of the structure of the control element provided in this embodiment;

[0070] Fig.21 A schematic diagram of the structure of the control member and the line hook member provided in this embodiment;

[0071] Fig. 22 A schematic diagram of the structure of a sub-controller 1 provided in this embodiment;

[0072] Fig.23 A schematic diagram of the structure of the sub-controller 2 provided in this embodiment;

[0073] Fig.24 This is a schematic structural diagram of the thread hooking member and the fixing member provided in this embodiment.

[0074] Reference numerals:

[0075] 10-medical line locking and cutting integrated device; 11-housing; 12-line locking assembly; 13-line cutting assembly; 111-inner cavity; 112-conducting port; 113-first inner surface; 114-second inner surface; 115-first outer surface; 116-second outer surface; 117-third outer surface; 121-locking member; 122-line fixing member; 131-line cutting member; 132-blocking member; 1211-base; 1212-first locking arm; 1213-second locking arm; 121 4-locking arm; 1221-boss; 1222-concave-convex structure; 12121-locking tooth; 12122-notch; 12131-locking groove; 12141-force-bearing part; 12142-reinforcement part; 12143-elastic part; 121211-end of the locking tooth close to one end of the wire fixing member; 121212-side wall of the locking tooth; 121311-end of the locking groove away from one end of the wire fixing member; 121312-side wall of the locking groove; X-first direction; Y-second direction;

[0076] 20-connecting assembly; 21-connecting member; 22-transmission member;

[0077] 30- operating device;

[0078] 40-thread hooking device; 41-thread hooking member; 42-control member; 43-limiting member; 411-thread hooking structure; 421-clamping groove; 422-fixing member; 423-sub-control member one; 424-sub-control member two; 431-limiting groove; 4211-elastic member; 4231-first notch; 4232-first accommodating cavity; 4233-bump; 4241-second notch; 4242-second accommodating cavity; 4243-installing groove; 4311-first limiting groove; 4312-second limiting groove. DETAILED DESCRIPTION

[0079] 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.

[0080] 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.

[0081] 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.

[0082] In the embodiment of the present invention, Figures 1 to 13 As shown, this embodiment provides a medical wire locking and cutting integrated device 10, comprising:

[0083] The housing 11 is formed with an inner cavity 111. The housing 11 is provided with a conducting port 112 communicating with the inner cavity 111. The inner cavity 111 has a first inner surface 113 and a second inner surface 114 sequentially arranged along a first direction X. The first direction X is a direction from the distal end of the housing 11 to the proximal end of the housing 11. The first inner surface 113 is inclined relative to the second inner surface 114 so that the distal end of the inner cavity 111 is open.

[0084] The locking wire assembly 12 comprises a locking member 121 and a wire fixing member 122. The locking member 121 is located in the housing 11. The locking member 121 is provided with a locking tooth 12121 and a locking groove 12131. The wire fixing member 122 is located between the locking tooth 12121 and the locking groove 12131. The wire fixing member 122 is used to allow a medical wire to pass through. The medical wire enters the inner cavity 111 from the wire fixing member 122 and extends out from the guide port 112. The locking member 121 is used to move along the first direction X under the action of an external force, so that the locking tooth 12121 and the locking groove 12131 are close to each other under the action of the first inner surface 113 and / or the second inner surface 114, so that the wire fixing member 122 is deformed and the medical wire is locked; wherein, in a cross section parallel to the first direction X, the contact point between the locking tooth 12121 and the wire fixing member 122 is located at any position between the middle of the wire fixing member 122 and the proximal end of the wire fixing member 122;

[0085] The wire cutting assembly 13 includes a wire cutting member 131, which is located in the housing 11 and is used to move to the conducting port 112 along the second direction Y under the action of an external force to cut the medical wire; wherein the second direction Y is the opposite direction of the first direction X.

[0086] The medical wire locking and cutting integrated device 10 provided in this embodiment integrates a wire locking component 12 and a wire cutting component 13, which reduces the number of times the equipment is replaced during the operation, reduces the difficulty of the operation, and thus shortens the operation time. At the same time, it reduces the risk caused by replacing equipment, helps to reduce surgical complications, and improves the success rate of the operation.

[0087] The present embodiment selects to shape the curved section at any position between the middle of the wire fixing member 122 and near the proximal end of the wire fixing member 122. Compared with shaping the curved section at the distal end of the wire fixing member 122, the present embodiment reduces the pressure and deformation force required for the wire fixing member 122 to form the curved section, and effectively prevents the inappropriate shaping position of the curved section from causing the required pressure and deformation force to be large, causing the locking member 121 to produce irreversible deformation, resulting in the problem that after the cutting assembly 13 cuts the wire, the wire fixing member 122 is pressed by the locking member 121 and cannot be smoothly detached from the inner cavity 111, thereby reducing the risk of surgical failure, making the locking operation of the wire fixing member 122 more convenient and efficient, and improving the operability and safety of the entire locking process.

[0088] In the embodiment of the present invention, in a cross section parallel to the first direction X, the length of the wire fixing member 122 is between 0.5 mm and 3 mm.

[0089] In the embodiment of the present invention, in a cross section parallel to the first direction X, the length of the wire fixing member 122 is between 1 mm and 3 mm.

[0090] In the embodiment of the present invention, in a cross section parallel to the first direction X, the length of the wire fixing member 122 is between 1 mm and 2 mm.

[0091] In the embodiment of the present invention, in a cross section parallel to the first direction X, the length of the wire fixing member 122 is 1.5 mm.

[0092] In the embodiment of the present invention, in a cross section parallel to the first direction X, a distance between a contact point between the locking tooth 12121 and the wire fixing member 122 and a proximal end of the wire fixing member 122 is between 0.05 mm and 1.5 mm.

[0093] In the embodiment of the present invention, in a cross section parallel to the first direction X, a distance between a contact point between the locking tooth 12121 and the wire fixing member 122 and a proximal end of the wire fixing member 122 is between 0.3 mm and 1 mm.

[0094] In the embodiment of the present invention, in a cross section parallel to the first direction X, a distance between a contact point between the locking tooth 12121 and the wire fixing member 122 and a proximal end of the wire fixing member 122 is 0.6 mm.

[0095] like Figure 5 As shown, in an embodiment of the present application, the locking member 121 is used to move along the first direction X under the action of an external force, so that the locking teeth 12121 and the locking groove 12131 are close to each other under the action of the first inner surface 113 and / or the second inner surface 114, so that the wire fixing member 122 is deformed into a V-shape and locks the medical wire.

[0096] In this embodiment, the wire fixing member 122 is deformed into a V-shape after being locked, so that the overall length of the wire fixing member 122 is shortened. The shorter wire fixing member 122 can effectively reduce the risk of the wire fixing member 122 hitting the human heart tissue, thereby reducing the risk of causing damage to the human heart tissue.

[0097] like Figure 3 As shown, in the embodiment of the present application, in a cross section parallel to the first direction X, the two side walls 121212 of the locking tooth form an angle α, and 0°≤α≤90°, and the end 121211 of the locking tooth close to one end of the wire fixing member has a curvature K1, and 8mm -1 ≤K1≤12mm -1 The two side walls 121312 of the locking groove form an angle β, and 0°≤β≤90°, the end 121311 of the locking groove away from the end of the fixed wire member has a curvature K2, and 2mm -1 ≤K2≤3mm -1 .

[0098] In this embodiment, the angles (α, β) formed between the two side walls 121212 of the locking tooth and the two side walls 121312 of the locking groove are both between 0°-90°, so that when the locking tooth 12121 and the locking groove 12131 approach each other under the action of the first inner surface 113 and / or the second inner surface 114, they can apply a uniform and strong locking force to the wire fixing piece 122, thereby ensuring the effective transmission and distribution of the locking force, preventing the wire fixing piece 122 from slipping or loosening, and enhancing the locking effect.

[0099] Moreover, in this embodiment, the end 121211 of the locking tooth close to one end of the wire fixing piece has a curvature K1, and the end 121311 of the locking groove away from one end of the wire fixing piece has a curvature K2, which helps to guide the locking tooth 12121 to smoothly enter the locking groove 12131, and K1 is greater than K2. When the locking tooth 12121 and the locking groove 12131 approach each other under the action of external force, the locking force on the wire fixing piece 122 tends to gradually increase, making the locking more stable and effective, and ensuring that the wire fixing piece 122 is firmly clamped and not easy to loosen or fall off, thereby enhancing the locking effect.

[0100] Furthermore, during the locking process, the contact area between the locking teeth 12121 and the wire fixing member 122, and the contact area between the locking groove 12131 and the wire fixing member 122, tend to gradually increase, which helps to disperse the locking force and reduce the pressure concentration on the local area of ​​the wire fixing member 122. Therefore, this embodiment can reduce the risk of damage to the wire fixing member 122 and protect the surface quality of the wire fixing member 122.

[0101] In the embodiment of the present invention, 9mm -1 ≤K1≤11mm -1 In the embodiment of the present invention, K1 = 10 mm -1 .

[0102] In the embodiment of the present invention, 2.3 mm -1 ≤K2≤2.7mm -1 In the embodiment of the present invention, K2 = 2.5 mm -1 .

[0103] In the embodiment of the present invention, α=0°, and in a cross section parallel to the first direction X, the two side walls 121212 of the locking tooth are parallel.

[0104] In an embodiment of the present invention, 30°≤α≤50°. In an embodiment of the present invention, α=40°.

[0105] In the embodiment of the present invention, β=0°, and in a cross section parallel to the first direction X, the two side walls 121312 of the locking groove are parallel.

[0106] In an embodiment of the present invention, 30°≤β≤50°. In an embodiment of the present invention, β=40°.

[0107] In an embodiment of the present invention, the distal end of the housing 11 has a rounded structure. In this embodiment, when the housing 11 moves in the sheath tube adapted thereto, the distal end of the housing 11 significantly reduces the contact area with the inner wall of the sheath tube through the rounded structure, thereby reducing friction and reducing the wear of the locking and cutting integrated device 10 and the inner wall of the sheath tube. The locking and cutting integrated device 10 is made to move more smoothly in the sheath tube, reducing the resistance caused by friction of the edges and corners, and at the same time, the locking and cutting integrated device 10 can perform complex movements (such as turning) in the sheath tube, thereby improving the flexibility and response speed of the locking and cutting integrated device 10.

[0108] In the embodiment of the present invention, in a plane parallel to the first direction X, the projection pattern of the locking member 121 completely overlaps with the projection pattern of the housing 11, so that the locking member 121 is completely located in the housing 11. This avoids the locking member 121 being exposed to wear the inner wall of the sheath and causing an increase in the movement resistance generated when the locking and cutting integrated device 10 moves. In this embodiment, the locking member 121 is completely located in the housing 11, so that the locking and cutting integrated device 10 moves more smoothly in the sheath, and can perform complex movements (such as turning).

[0109] like Figure 2 , 4 As shown in Figures , 6, 10 and 11, in an embodiment of the present invention, the tangent piece 131 is arranged on the locking piece 121 and is arranged around the outer periphery of the locking piece 121, and the locking piece 121 is used to drive the tangent piece 131 to move synchronously under the action of an external force; wherein, the length of the tangent piece 131 and the length of the locking piece 121 are in a ratio of 40% to 70%.

[0110] In the embodiment of the present invention, the outer diameter of a portion of the locking member 121 is equal to the inner diameter of the tangent member 131 , and the outer surface of the tangent member 131 is in contact with the first inner surface 113 .

[0111] In the embodiment of the present invention, the proximal end of the cutting member 131 and the proximal end of the locking member 121 form a flush surface.

[0112] In the embodiment of the present invention, the length ratio of the cutting element 131 to the length ratio of the locking element 121 is between 50% and 60%. In the embodiment of the present invention, the length ratio of the cutting element 131 to the length ratio of the locking element 121 is 56%.

[0113] In this embodiment, the thread cutting member 131 is arranged on the locking member 121 to achieve synchronous movement of the locking member 121 and the thread cutting member 131, thereby reducing the number of transmission members 22 required for the locking and cutting integrated device 10 and simplifying the transmission structure.

[0114] At the same time, the cutting piece 131 is arranged around the outer periphery of the locking piece 121, which realizes the compact arrangement of the internal space of the shell 11, reduces space waste, and is beneficial to reducing the volume of the locking and cutting integrated device 10, thereby improving the smoothness of movement of the locking and cutting integrated device 10.

[0115] Furthermore, in this embodiment, the ratio of the length of the tangent piece 131 to the length of the locking piece 121 is between 40% and 70%, so that the tangent piece 131 has a certain length, thereby reducing the distance that the tangent piece 131 moves to the conducting port 112, thereby reducing the length of the locking piece 121 exposed from the shell 11 when the tangent piece 131 is driven by an external force to move along the second direction Y to the conducting port 112 to cut off the medical wire, thereby avoiding damage to human tissue caused by the exposure of the locking piece 121 and improving the safety of the locking and cutting integrated device 10.

[0116] In the embodiment of the present invention, the proximal end of the tangent piece 131 has a rounded structure. In this embodiment, when the tangent piece 131 moves along the first direction X or the second direction Y in the inner cavity 111 with the locking piece 121 under the action of external force, the distal end and the proximal end of the tangent piece 131 can significantly reduce the contact area with the first inner surface 113 through the rounded structure, thereby reducing the friction and reducing the wear of the tangent piece 131 and the first inner surface 113. The movement of the tangent piece 131 and the locking piece 121 in the inner cavity 111 is smoother, reducing the resistance caused by the friction of the edges and corners.

[0117] like Figure 10-11 As shown, in the embodiment of the present invention, the cutting assembly 13 further includes a blocking member 132, which is located at the distal end of the inner cavity 111 and is arranged on the outer periphery of the locking member 121, and in the initial state where the locking tooth 12121 is pre-pressed on the thread fixing member 122, the blocking member 132 is located between the locking tooth 12121 and the conducting port 112 and between the locking groove 12131 and the conducting port 112. In this embodiment, the blocking member 132 is arranged to cooperate with the cutting member 131, and the cutting is completed when the cutting member 131 moves to the conducting port 112 and contacts the blocking member 132, thereby improving the success rate of cutting. At the same time, the blocking member 132 can prevent the cutting member 131 from excessively moving in the second direction Y, thereby ensuring that the locking member 121 will not extend out of the housing 11 and touch the human heart tissue to cause damage to the heart tissue.

[0118] like Figure 4-5 As shown, in the embodiment of the present invention, in a cross section parallel to the first direction X, an end 121211 of the locking tooth close to one end of the wire fixing member and an end 121311 of the locking groove away from one end of the wire fixing member are arranged correspondingly, and the end 121211 of the locking tooth close to one end of the wire fixing member is a first arc, and the arc number of the first arc is θ 1The end portion 121311 of the locking groove away from the fixed wire member is a second arc, and the arc number of the second arc is θ 2 ;

[0119] where θ 1 =θ 2 .

[0120] In an embodiment of the present invention,

[0121] In an embodiment of the present invention,

[0122] In this embodiment, on the basis that the curvature K1 of the first arc (i.e., the end 121211 of the locking tooth close to the wire fixing member) is greater than the curvature K2 of the second arc (i.e., the end 121311 of the locking groove away from the wire fixing member), the end 121211 of the locking tooth close to the wire fixing member and the end 121311 of the locking groove away from the wire fixing member are both arc-shaped in a cross section parallel to the first direction X, and the radian number θ of the first arc is 1 The arc angle of the second arc is θ 2 Equally, the contact area between the end 121211 of the locking tooth close to the wire fixing piece and the wire fixing piece 122 and the contact area between the end 121311 of the locking groove away from the wire fixing piece and the wire fixing piece 122 is increased, which helps to reduce the overall length of the wire fixing piece 122 after being locked, thereby significantly reducing the risk of accidental contact and affecting other surrounding tissues due to the excessive length of the locked wire fixing piece 122.

[0123] At the same time, because the contact area between the end 121211 of the locking tooth close to the wire fixing piece and the wire fixing piece 122 and the end 121311 of the locking groove away from the wire fixing piece and the wire fixing piece 122 increases, the effective area of ​​the end 121211 of the locking tooth close to the wire fixing piece on the wire fixing piece 122 and the effective area of ​​the end 121311 of the locking groove away from the wire fixing piece on the wire fixing piece 122 are increased, thereby enhancing the locking force, improving the locking effect and the locking success rate.

[0124] In the embodiment of the present invention, the line between the center of the circle where the first arc is located and the center of the circle where the second arc is located is perpendicular to the first direction X. In this embodiment, the arc number θ of the first arc is 1 The arc angle of the second arc is θ 2On the premise that the first arc and the second arc are equal, the line connecting the center of the circle where the first arc is located and the center of the circle where the second arc is located is further made perpendicular to the first direction X, so that after the locking tooth 12121 and the locking groove 12131 lock the wire fixing member 122, the line connecting the bending part formed by the end 121211 of the locking tooth close to one end of the wire fixing member squeezing the wire fixing member 122 and the bending part formed by the end 121311 of the locking groove away from one end of the wire fixing member squeezing the wire fixing member 122 (that is, the line connecting the center of the circle where the first arc is located and the center of the circle where the second arc is located) is perpendicular to the straight line in the first direction X. After the locking teeth 12121 and the locking groove 12131 lock the wire fixing piece 122, the wire fixing piece 122 between the end 121211 of the locking teeth close to one end of the wire fixing piece and the end 121311 of the locking groove away from one end of the wire fixing piece is in an axially symmetrical fan-shaped ring shape, which helps to reduce the lateral dimension of the wire fixing piece 122 in the cross section parallel to the first direction X, that is, it helps to reduce the overall length of the wire fixing piece 122 after being locked, thereby significantly reducing the risk of accidental contact and affecting other surrounding tissues due to the excessive length of the wire fixing piece 122 after being locked.

[0125] like Figure 2-3 As shown, in an embodiment of the present invention, in a cross section parallel to the first direction X, the two side walls 121212 of the locking tooth and the two side walls 121312 of the locking groove are arranged one by one, and the angle α formed between the two side walls 121212 of the locking tooth is equal to the angle β formed between the two side walls 121312 of the locking groove.

[0126] like Figure 6-7 As shown, when the locking tooth 12121 and the locking groove 12131 approach each other under the action of the first inner surface 113 and / or the second inner surface 114, so that the wire fixing member 122 is deformed and the medical wire is locked, a first distance L1 is formed between an end 121211 of the locking tooth close to one end of the wire fixing member and an end 121311 of the locking groove away from one end of the wire fixing member, a second distance L2 is formed between a side wall of the corresponding locking tooth 12121 and a side wall of the locking groove 12131, and a third distance L3 is formed between the other side wall of the corresponding locking tooth 12121 and the other side wall of the locking groove 12131;

[0127] Among them, L1=L2=L3.

[0128] According to this embodiment, when the locking tooth 12121 and the locking tooth 12121 lock the wire fixing piece 122, the end 121211 of the locking tooth close to one end of the wire fixing piece, the two side walls 121212 of the locking tooth, the end 121311 of the locking groove away from one end of the wire fixing piece, and the two side walls 121212 of the locking tooth are all in contact with the wire fixing piece 122, thereby increasing the contact area between the locking tooth 12121 and the wire fixing piece 122 and the locking groove 12131 and the wire fixing piece 122, and increasing the locking force applied to the fixing piece, thereby enhancing the locking force, improving the locking effect and the locking success rate.

[0129] In the embodiment of the present invention, 0.2 mm≤L1=L2=L3≤2 mm.

[0130] like Figure 2-3 As shown, in the embodiment of the present invention, in the cross section parallel to the first direction X, the locking tooth 12121 is close to the proximal end of the wire fixing member 122, and the ratio of the distance between the contact point between the locking tooth 12121 and the proximal end of the wire fixing member 122 to the distal end of the wire fixing member 122 and the length of the wire fixing member 122 is between 50% and 90%. If the contact type between the locking tooth 12121 and the proximal end of the wire fixing member 122 is surface contact, then "the distance between the contact point between the locking tooth 12121 and the proximal end of the wire fixing member 122 to the distal end of the wire fixing member 122" refers to the distance between the midpoint of the contact surface between the locking tooth 12121 and the proximal end of the wire fixing member 122 to the distal end of the wire fixing member 122 in the cross section parallel to the first direction X.

[0131] The present embodiment chooses to shape the curved section at any position between the middle of the wire fixing member 122 and near the proximal end of the wire fixing member. Compared with shaping the curved section at the distal end of the wire fixing member 122, the present embodiment reduces the pressure and deformation force required for the wire fixing member 122 to form the curved section, and effectively prevents the inappropriate shaping position of the curved section from causing the required pressure and deformation force to be large, causing irreversible deformation of the locking member, resulting in the problem that the wire fixing member is pressed by the locking member after the tangent assembly is cut and cannot be smoothly detached from the inner cavity, thereby reducing the risk of surgical failure, making the locking operation of the wire fixing member 122 more convenient and efficient, and improving the operability and safety of the entire locking process.

[0132] In the embodiment of the present invention, the ratio of the distance between the contact point between the locking tooth 12121 and the proximal end of the wire fixing member 122 and the distal end of the wire fixing member 122 to the length of the wire fixing member 122 is between 50% and 70%. In this embodiment, the curved section is formed at any position between the middle of the wire fixing member 122 and the proximal end of the wire fixing member. Compared with forming the curved section at the distal end of the wire fixing member 122, this embodiment minimizes the pressure and deformation force required for the wire fixing member 122 to form the curved section, greatly optimizing the operability of the entire locking process.

[0133] In the embodiment of the present invention, in the cross section parallel to the first direction X, the locking groove 12131 is close to the proximal end of the wire fixing member 122 , and the ratio of the notch length of the locking groove 12131 to the length of the wire fixing member 122 is between 40% and 90%.

[0134] The present embodiment chooses to shape the curved section at any position between the proximal end of the wire fixing member 122 and the middle part of the wire fixing member 122. Compared with shaping the curved section at the distal end of the wire fixing member 122, the present embodiment reduces the pressure and deformation force required for the wire fixing member 122 to form the curved section, and effectively prevents the inappropriate shaping position of the curved section from causing the required pressure and deformation force to be large, causing irreversible deformation of the locking member, resulting in the problem that the wire fixing member is pressed by the locking member after the tangent assembly is cut and cannot be smoothly detached from the inner cavity, thereby reducing the risk of surgical failure, making the locking operation of the wire fixing member 122 more convenient and efficient, and improving the operability and safety of the entire locking process.

[0135] At the same time, the length of the locking groove 12131 of the present embodiment is in a reasonable ratio (40%-90%) to the length of the wire fixing piece 122, thereby ensuring the stability of the wire fixing piece 122 after being locked. At the same time, the proportion of the curved section formed after the wire fixing piece 122 is locked to the entire wire fixing piece 122 is increased, and the overall length of the wire fixing piece 122 after being locked is reduced, thereby significantly reducing the risk of accidental contact and affecting other surrounding tissues due to the excessive length of the wire fixing piece 122 after being locked.

[0136] In the embodiment of the present invention, in the cross section parallel to the first direction X, the locking groove 12131 is close to the proximal end of the wire fixing member 122 , and the ratio of the notch length of the locking groove 12131 to the length of the wire fixing member 122 is between 50% and 60%.

[0137] like Figure 13-15 As shown, in the embodiment of the present invention, the locking member 121 includes a base 1211 and two locking arms 1214 extending outward from the base 1211 and arranged at intervals. The locking arms 1214 are sequentially formed with a force-bearing portion 12141, a reinforcing portion 12142 and an elastic portion 12143 along the first direction X, and are connected to the base 1211 through the elastic portion 12143. A locking tooth 12121 is provided on the force-bearing portion 12141 of one locking arm, and a locking groove 12131 is provided on the force-bearing portion 12141 of the other locking arm.

[0138] The force-bearing portion 12141 contacts the first inner surface 113 , and the reinforcing portion 12142 contacts the second inner surface 114 .

[0139] When the locking member 121 is assembled in the housing 11 (in the initial state, the locking tooth 12121 is pre-pressed on the wire fixing member 122 ), the elastic potential energy of the elastic portion 12143 is initially increased, so that the two locking arms are initially close to each other.

[0140] like Figure 13-14 As shown, when the base 1211 drives the two locking arms to move along the first direction X under the action of external force, the first inner surface 113 squeezes the force-bearing portion 12141, and the elastic potential energy of the elastic portion 12143 increases again, the two locking arms approach each other again, and the locking teeth 12121 and the locking groove 12131 approach each other, causing the wire fixing member 122 to deform and lock the medical wire.

[0141] When the base 1211 initially drives the two locking arms to move along the second direction Y under the action of external force (when the locking member 121 is completely located in the shell 11), the elastic part 12143 initially releases its elastic potential energy, the two locking arms initially move away from each other, and the locking teeth 12121 and the locking groove 12131 initially move away from each other.

[0142] like Fig.15 As shown, when the base 1211 continues to drive the two locking arms to move along the second direction Y under the action of external force (when the locking member 121 is at least partially exposed from the far end of the shell 11), the elastic portion 12143 releases the elastic potential energy again, the two locking arms move away from each other again, and the locking teeth 12121 and the locking groove 12131 move away from each other again to release the wire fixing member 122.

[0143] In the embodiment of the present invention, in a cross section parallel to the first direction X, the height of the elastic portion 12143 (ie, the thickness in a three-dimensional view) is between 0.1 mm and 1 mm.

[0144] In the embodiment of the present invention, the height of the reinforcing portion 12142 (i.e., the thickness in a three-dimensional view) is between 0.3 mm and 2 mm in a cross section parallel to the first direction X. In this embodiment, the thickness of the reinforcing portion 12142 is increased to prevent the locking arm from producing irreversible deformation that affects the release of the wire fixing member 122 after locking, thereby improving the stability of the locking member 121.

[0145] In the embodiment of the present invention, the angle formed between the first inner surface 113 and the second inner surface 114 is between 130° and 170°.

[0146] In the embodiment of the present invention, the angle formed between the outer surface of the reinforcing portion 12142 and the outer surface of the force-bearing portion 12141 is between 130° and 170°.

[0147] like Figure 2As shown, in an embodiment of the present invention, the locking member 121 includes a base 1211 and a first locking arm 1212 and a second locking arm 1213 extending outward from the base 1211, a locking tooth 12121 is formed on the side of the first locking arm 1212 close to the second locking arm 1213, and a locking groove 12131 is formed on the side of the second locking arm 1213 close to the first locking arm 1212.

[0148] In the embodiment of the present invention, a positioning groove is disposed on the second locking arm 1213 , and the positioning groove is close to the locking groove 12131 . The positioning groove is used to place the wire fixing member 122 .

[0149] like Figure 6-7 As shown, in an embodiment of the present invention, a notch 12122 is formed at the distal end of the first locking arm 1212 to form a gap between the distal end of the first locking arm 1212 and the distal end of the second locking arm 1213; in a cross section parallel to the first direction X, and when the locking teeth 12121 and the locking groove 12131 approach each other under the action of the first inner surface 113 and / or the second inner surface 114, causing the wire fixing member 122 to deform and lock the medical wire, the length of the gap is between 0.5mm-2mm, and the height of the gap is between 0.5mm-2mm.

[0150] This embodiment forms a gap between the distal end of the first locking arm 1212 and the distal end of the second locking arm 1213, thereby effectively preventing the distal end of the first locking arm 1212 and the second locking arm 1213 from pinching surrounding tissues when the locking member 121 is performing a locking operation, thereby improving the safety of the surgical operation and reducing the risk of surgical complications (such as tissue tearing, bleeding, hematoma formation, etc.), thereby promoting rapid recovery and good prognosis of patients after surgery.

[0151] like Figure 4-5 As shown, in an embodiment of the present invention, a boss 1221 extends outward from the distal end of the wire fixing member 122. In a cross section parallel to the first direction X, when the locking teeth 12121 and the locking grooves 12131 approach each other under the action of the first inner surface 113 and / or the second inner surface 114, causing the wire fixing member 122 to deform and lock the medical wire, the outer diameter of the boss 1221 is greater than the height of the gap.

[0152] This embodiment effectively avoids the risk of surgical failure caused by the wire fixing member 122 being moved into the shell 11 by mistake by setting a boss 1221 on the wire fixing member 122, thereby improving the stability of the locking and cutting integrated device 10 and the success rate of the operation.

[0153] In the embodiment of the present invention, the boss 1221 is annular, but not limited thereto.

[0154] like Fig.12As shown, in the embodiment of the present invention, the inner surface of the wire fixing member 122 is provided with a threaded protrusion, so that the inner surface of the wire fixing member 122 forms a concave-convex structure 1222. In the embodiment of the present invention, the inner surface of the wire fixing member 122 is provided with a threaded groove, so that the inner surface of the wire fixing member 122 forms a concave-convex structure 1222. In the embodiment of the present invention, the inner surface of the wire fixing member 122 is provided with a plurality of protrusions arranged at intervals, so that the inner surface of the wire fixing member 122 forms a concave-convex structure 1222. In the embodiment of the present invention, the inner surface of the wire fixing member 122 is provided with a plurality of grooves arranged at intervals, so that the inner surface of the wire fixing member 122 forms a concave-convex structure 1222.

[0155] In this embodiment, a concave-convex structure 1222 is formed on the inner surface of the wire fixing member 122 to increase the contact area between the wire fixing member 122 and the medical wire, and to enhance the locking force of the wire fixing member 122 on the medical wire, thereby enhancing the wire locking effect of the wire fixing member 122 .

[0156] like Figure 2 As shown, in the embodiment of the present invention, the housing 11 has a first outer surface 115, a second outer surface 116 and a third outer surface 117 sequentially arranged along the first direction X;

[0157] The diameter of the second outer surface 116 decreases successively along the first direction X, and in a cross section parallel to the first direction X, the angle between the second outer surface 116 and the first outer surface 115 is between 91° and 170°, and the angle between the second outer surface 116 and the third outer surface 117 is between 91° and 170°.

[0158] In this embodiment, the outer diameter of the shell 11 is gradually reduced along the first direction X by providing the second outer surface 116 whose diameter decreases successively along the first direction X, so that the first outer surface 115 smoothly transitions to the second outer surface 116, further improving the smoothness of pushing.

[0159] In the embodiment of the present invention, the included angle between the second outer surface 116 and the first outer surface 115 is between 150° and 170°.

[0160] In the embodiment of the present invention, the included angle between the second outer surface 116 and the third outer surface 117 is between 150° and 170°.

[0161] In the embodiment of the present invention, in a cross section parallel to the first direction X, the length of the first outer surface 115 is between 2 mm and 3 mm, the length of the second outer surface 116 is between 2.5 mm and 3.5 mm, and the length of the third outer surface 117 is between 10 mm and 13 mm.

[0162] like Figure 2 , 10As shown in 11, in an embodiment of the present invention, a portion of the first outer surface 115 is located outside the first inner surface 113, another portion of the first outer surface 115, the second outer surface 116 and the third outer surface 117 are located outside the second inner surface 114, and the conducting port 112 is used to connect the inner cavity 111 with the outside through the second outer surface 116 and the second inner surface 114.

[0163] In this embodiment, the conducting port 112 is disposed on the inclined second outer surface 116 to reduce the angle between the medical wire and the housing 11 during transmission of the medical wire, thereby further increasing the smoothness of transmission of the medical wire.

[0164] In the embodiment of the present invention, the distance between the distal end of the thread cutting member 131 and the distal end of the conducting port 112 is between 2 mm and 4 mm. This embodiment reduces the distance that the thread cutting member 131 moves to the conducting port 112, thereby reducing the length of the locking member 121 exposed from the housing 11 when the thread cutting member 131 is driven by an external force to move along the second direction Y to the conducting port 112 to cut the medical line, thereby avoiding damage to human tissue caused by the exposure of the locking member 121 and improving the safety of the locking and cutting integrated device 10.

[0165] like Figure 2 As shown, in the embodiment of the present invention, the ratio of the diameter of the third outer surface 117 to the diameter of the first outer surface 115 is between 60% and 85%. In this embodiment, the outer surface of the housing 11 is configured with a variable diameter, so that along the first direction, the heights of the first outer surface 115 of the housing 11, the second outer surface 116 of the housing 11, and the third outer surface 117 of the housing 11 in the vertical direction gradually decrease, so that the housing 11 can adapt to a smaller turning radius, further increasing the smoothness of pushing.

[0166] In the embodiment of the present invention, the diameter of the first outer surface 115 is between 4 mm and 6 mm.

[0167] In the embodiment of the present invention, the diameter of the third outer surface 117 is between 2.7 mm and 4.7 mm.

[0168] like Figure 1-24 As shown, the present embodiment further provides a medical thread hooking device 40 for use in conjunction with the medical thread locking and cutting integrated device described in any of the above embodiments. The thread hooking device 40 includes a thread hooking member 41 and a control member 42. The thread hooking member 41 passes through the conducting port 112 and the thread fixing member 122 and is exposed at the distal end of the shell 1. The portion of the thread hooking member 41 exposed at the distal end of the shell 1 forms a thread hooking structure 411. The thread hooking member 41 is configured to be driven by the control member 41 to drive the medical thread from the thread fixing member 122 into the inner cavity 111 and extend out through the conducting port 112 through the thread hooking structure 411.

[0169] In this embodiment, the wire hooking device 40 drives the medical wire from the wire fixing member 122 into the inner cavity 111 and extends out through the conducting port 112, so that during the operation, there is no need to spend a lot of time and energy on threading the medical wire, and the medical wire can be quickly passed through the wire fixing member 122 and the conducting port 112, thereby reducing the operation time and improving the overall efficiency of the operation. In addition, the wire hooking device drives the movement of the medical wire with high accuracy and strong reliability.

[0170] like Figure 4-24 As shown, in an embodiment of the present invention, the wire hook member 41 is in a wire shape, and one end of the wire hook member 41 is arranged on the control member 42, and the other end passes through the conducting port 112 and the wire fixing member 122 in sequence to be exposed at the far end of the shell 1, and rotates at the far end of the shell 1 to form an annular structure, which constitutes the wire hook structure 411, and passes through the wire fixing member 122 and the conducting port 112 in sequence to be arranged on the control member 42.

[0171] During the operation, one end of the medical wire is passed through the wire hook structure 411, and then an external force is applied to the control component 42. The control component 42 drives the wire hook component 41 and the medical wire to move, so that the medical wire is folded in half and passed through the wire fixing component 122 and the conducting port 112. Then, the locking and cutting process of the medical wire is completed through the medical wire locking and cutting integrated device 10.

[0172] In the embodiment of the present invention, the thread hooking member 41 is made of metal wire.

[0173] like Figure 18-19 As shown, in the embodiment of the present invention, the line hooking device further includes a limit member 43 , on which a limit groove 431 is provided. The limit member 43 is used to contact the line hooking structure 411 through the limit groove 431 to limit the displacement of the line hooking structure 411 .

[0174] The cross-sectional area of ​​the limiting member 43 is larger than the cross-sectional area of ​​the wire fixing member 122 , so that the limiting member 43 cannot extend into the wire fixing member 122 .

[0175] The limiting member 43 is made of silicone material, but is not limited thereto.

[0176] This embodiment sets a limiter 43 to limit the displacement of the wire hooking structure 411, thereby preventing the wire hooking member 41 from being withdrawn from the wire fixing member 122 and the conducting port 112 due to misoperation of the control member 42, thereby preventing the pre-installation failure of the wire hooking member 41. This embodiment improves the reliability of the wire hooking device for the medical thread.

[0177] like Figure 18-19 As shown, in the embodiment of the present invention, a limiting groove 431 is provided on the side wall of the limiting member 43 , and the wire hooking structure 411 enters the limiting groove 431 through the side wall of the limiting member 43 and is engaged with the limiting groove 431 .

[0178] In the embodiment of the present invention, the cross section of the limiting groove 431 is a combination of two or more straight lines, broken lines and wavy lines. This embodiment increases the ruggedness from the inside of the limiting groove 431 to the outside of the limiting groove 431, so as to increase the difficulty of the wire hooking structure 411 moving from the inside of the limiting groove 431 to the outside of the limiting groove 431, and prevent the wire hooking structure 411 from detaching from the limiting groove 431, thereby further improving the reliability of the wire hooking device for the medical wire.

[0179] In the embodiment of the present invention, the cross section of the limiting groove 431 is a combination of a straight line and a broken line.

[0180] like Fig.19 As shown, in the embodiment of the present invention, the limiting groove 431 includes a first limiting groove 4311 and a second limiting groove 4312 , and the first limiting groove 4311 is connected to the outside through the second limiting groove 4312 .

[0181] When the cross section of the first limiting groove 4311 is circular, the diameter of the cross section of the first limiting groove 4311 is greater than the width of the second limiting groove 4312 .

[0182] When the cross section of the first limiting groove 4311 is polygonal, the distance between two opposite and non-adjacent side walls of the first limiting groove 4311 is greater than the width of the second limiting groove 4312 .

[0183] In this embodiment, a first limiting groove 4311 and a second limiting groove 4312 are provided, and the wire hooking structure 411 is placed in the first limiting groove 4311, so as to increase the difficulty of moving the wire hooking structure 411 from the limiting groove 431 to the outside of the limiting groove 431, thereby preventing the wire hooking structure 411 from detaching from the limiting groove 431, and further improving the reliability of the wire hooking device of the medical thread.

[0184] The first limiting groove 4311 is located at the center of the limiting member 43 .

[0185] The cross section of the second limiting groove 4312 is a combination of two or more types of straight lines, broken lines and wavy lines.

[0186] like Fig. 20 As shown, in an embodiment of the present invention, a snap-in groove 421 is provided on the side wall of the control member 42, and the snap-in groove 421 extends along the first direction X and penetrates the control member 42, and the control member 42 is fixed to a support through the snap-in groove 421, for example, the control member 42 is fixed to the connector 21 of the locking and cutting integrated system of the medical wire through the snap-in groove 421.

[0187] In this embodiment, a clamping groove 421 adapted to the connecting member 21 is provided on the control member 42, so that the control member 42 can be assembled on the connecting member 21, thereby preventing the wire hooking member 41 from being withdrawn from the wire fixing member 122 and the conducting port 112 due to misoperation of the control member 42, thereby preventing the pre-installation failure of the wire hooking member 41, and thus improving the reliability of the wire hooking device for the medical wire. The clamping groove 421 is located on the side wall of the control member 42, and extends through the control member 42 along the first direction X, so that the control member 42 and the connecting member 21 can be easily installed and removed.

[0188] like Fig. 20 As shown, in an embodiment of the present invention, an elastic member 4211 is provided in the snap-in groove 421, and when the control member 42 is detachably connected to the connecting member 21, the elastic member 4211 is located on both sides of the connecting member 21 and clamps the connecting member 21, so that the connection between the control member 42 and the connecting member 21 is stable.

[0189] In an embodiment of the present invention, elastic members 4211 are provided on two opposite side walls of the snap-in groove 421, and the spacing between the two elastic members 4211 is greater than the width of the connecting member 21 or the diameter of the connecting member 21, so that when the control member 42 is detachably connected to the connecting member 21, the elastic members 4211 are located on both sides of the connecting member 21 and clamp the connecting member 21.

[0190] The elastic member 4211 is a silicone member, but is not limited thereto.

[0191] like Figure 20-23 As shown, in the embodiment of the present invention, the control component 42 includes a sub-control component 1 423 and a sub-control component 2 424 that are connected to each other, and a first notch 4231 is formed on the side of the sub-control component 1 423 close to the sub-control component 2 424, and a second notch 4241 is formed on the side of the sub-control component 1 423 close to the sub-control component 2 424, and a snap-in groove 421 is formed between the first notch 4231 and the second notch 4241.

[0192] In an embodiment of the present invention, the first notch 4231 is recessed inward to form a first accommodating cavity 4232, and the second notch 4241 is recessed inward to form a second accommodating cavity 4242. The first accommodating cavity 4232 and the second accommodating cavity 4242 both accommodate elastic members 4211, so that when the control member 42 is detachably connected to the connecting member 21, the elastic members 4211 are located on both sides of the connecting member 21 and clamp the connecting member 21.

[0193] like Figure 21-24 As shown, in the embodiment of the present invention, a fixing member 422 is provided inside the control member 42 , and both ends of the line hooking member 41 are fixed on the fixing member 422 .

[0194] In the embodiment of the present invention, the fixing member 422 is a clip, but is not limited thereto.

[0195] In an embodiment of the present invention, a protrusion 4233 is formed on the side of the sub-control component 1 423 close to the sub-control component 2 424, and a mounting groove 4243 is formed on the side of the sub-control component 2 424 close to the sub-control component 1 423. The mounting groove 4243 is used to accommodate the fixing component 422. When the sub-control component 1 423 and the sub-control component 2 424 are connected, the protrusion 4233 is located in the mounting groove 4243 to fix the fixing component 422 in the mounting groove 4243.

[0196] In the embodiment of the present invention, an anti-slip structure is provided on the outer surface of the control member 42 to increase the friction between the hand and the outer surface of the control member 42 .

[0197] like Figure 1-24 As shown, this embodiment also provides a medical wire locking and cutting integrated system, including an operating device 30, a connecting assembly 20, the medical wire locking and cutting integrated device 10 described in any of the above embodiments, and the medical wire hooking device 40 described in any of the above embodiments;

[0198] The connection assembly 20 comprises:

[0199] A connecting member 21, wherein the distal end of the connecting member 21 is connected to the housing 1 of the locking and cutting integrated device 10, and the proximal end of the connecting member 21 is connected to the operating device 30;

[0200] The transmission member 22 is arranged in the connecting member 21, the distal end of the transmission member 22 extends into the shell 1 and is connected with the locking member 121 and / or the tangent member 131, and the proximal end of the transmission member 22 is connected with the operating device 30. The transmission member 22 is used to drive the locking member 121 and / or the tangent member 131 to move under the action of the operating device 30.

[0201] The medical line locking and cutting integrated system provided in this embodiment integrates the locking line component 12, the cutting line component 13 and the medical line hooking device, and has rich functions, so that it is not necessary to spend a lot of time and energy on the threading of the medical line during the operation, thereby improving the overall efficiency of the operation, and the hooking device drives the medical line to move with high accuracy and high reliability. At the same time, the locking and cutting process of the medical line is more automated, which is convenient for doctors to operate during the operation, reduces the manual operation of doctors during the operation, and reduces the replacement of instruments, thereby improving the efficiency of the operation.

[0202] In an embodiment of the present invention, the cutting piece 131 is arranged on the locking piece 121 , and the distal end of the transmission piece 22 extends into the housing 1 and is connected to the locking piece 121 . The transmission piece 22 is used to drive the locking piece 121 and the cutting piece 131 to move synchronously under the action of the operating device 30 .

[0203] In the embodiment of the present invention, the transmission member 22 includes a first sub-transmission member and a second sub-transmission member. The distal end of the first sub-transmission member extends into the housing 1 and is connected to the locking member 121, and the proximal end of the first sub-transmission member is connected to the operating device 30, and the first sub-transmission member is used to drive the locking member 121 to move under the action of the operating device 30. The distal end of the second sub-transmission member extends into the housing 1 and is connected to the tangent member 131, and the proximal end of the second sub-transmission member is connected to the operating device 30, and the second sub-transmission member is used to drive the tangent member 131 to move under the action of the operating device 30.

[0204] 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.

[0205] 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. A locking and cutting integrated device for medical wires, characterized in that: include: A shell, wherein the shell forms an inner cavity, the shell is provided with a conducting port communicating with the inner cavity, the inner cavity has a first inner surface and a second inner surface sequentially arranged along a first direction, the first direction is a direction from the distal end of the shell to the proximal end of the shell, the first inner surface is inclined relative to the second inner surface so that the distal end of the inner cavity is open; A locking wire assembly, comprising a locking member and a wire fixing member, wherein the locking member is located in the housing, the locking member is provided with a locking tooth and a locking groove, the wire fixing member is located between the locking tooth and the locking groove, the wire fixing member is used to allow a medical wire to pass through, the medical wire enters the inner cavity from the wire fixing member and extends out through the guide port, and the locking member is used to move along the first direction under the action of an external force, so that the locking tooth and the locking groove are close to each other under the action of the first inner surface and / or the second inner surface, so that the wire fixing member is deformed and locks the medical wire; wherein, in a cross section parallel to the first direction, the contact point between the locking tooth and the wire fixing member is located at any position between the middle of the wire fixing member and close to the proximal end of the wire fixing member; The wire cutting assembly includes a wire cutting piece, which is located in the shell and is used to move to the conducting port along a second direction under the action of an external force to cut off the medical wire; wherein the second direction is the opposite direction of the first direction.

2. The locking and cutting integrated device for medical wires according to claim 1, characterized in that: The locking member is used to move along the first direction under the action of an external force, so that the locking teeth and the locking groove are close to each other under the action of the first inner surface and / or the second inner surface, so that the wire fixing member is deformed into a V-shape and locks the medical wire; And / or, in a cross section parallel to the first direction, the two side walls of the locking tooth form an angle α, and 0°≤α≤90°, and the end of the locking tooth close to one end of the wire fixing member has a curvature K1, and 8mm -1 ≤K1≤12mm -1 The two side walls of the locking groove form an angle β, and 0°≤β≤90°, the end of the locking groove away from the end of the fixed wire member has a curvature K2, and 2mm -1 ≤K2≤3mm -1 .

3. The medical wire locking and cutting integrated device according to claim 2, characterized in that: In a cross section parallel to the first direction, an end of the locking tooth close to one end of the wire fixing member and an end of the locking groove away from one end of the wire fixing member are arranged correspondingly, and the end of the locking tooth close to one end of the wire fixing member is in the form of a first arc, and the arc number of the first arc is θ1; the end of the locking groove away from one end of the wire fixing member is in the form of a second arc, and the arc number of the second arc is θ2; Where θ1=θ2.

4. The medical wire locking and cutting integrated device according to claim 3, characterized in that: In a cross section parallel to the first direction, two side walls of the locking tooth are arranged in one-to-one correspondence with two side walls of the locking groove, and α=β; When the locking tooth and the locking groove approach each other under the action of the first inner surface and / or the second inner surface, causing the wire fixing member to deform and lock the medical wire, a first distance L1 is formed between an end of the locking tooth close to one end of the wire fixing member and an end of the locking groove away from one end of the wire fixing member, a second distance L2 is formed between a corresponding side wall of the locking tooth and a side wall of the locking groove, and a third distance L3 is formed between the corresponding other side wall of the locking tooth and the other side wall of the locking groove; Among them, L1=L2=L3.

5. The medical wire locking and cutting integrated device according to claim 1, characterized in that: In a cross section parallel to the first direction, the ratio of the distance between the contact point between the locking tooth and the wire fixing member and the distal end of the wire fixing member to the length of the wire fixing member is between 50% and 90%; And / or, in a cross section parallel to the first direction, a ratio of a length of the locking groove to a length of the wire fixing member is between 40% and 90%.

6. The medical wire locking and cutting integrated device according to claim 1, characterized in that: The locking member comprises a base and a first locking arm and a second locking arm extending outward from the base, the first locking arm is provided with the locking tooth on one side close to the second locking arm, and the second locking arm is provided with the locking groove on one side close to the first locking arm; A notch is formed at the distal end of the first locking arm to form a gap between the distal ends of the first locking arm and the second locking arm; in a cross section parallel to the first direction, when the locking teeth and the locking groove approach each other under the action of the first inner surface and / or the second inner surface, causing the wire fixing member to deform and lock the medical wire, the length of the gap is between 0.5mm-2mm, and the height of the gap is between 0.5mm-2mm.

7. The medical wire locking and cutting integrated device according to claim 1, characterized in that: The shell has a first outer surface, a second outer surface and a third outer surface arranged in sequence along a first direction; The diameter of the second outer surface decreases successively along the first direction, and in a cross section parallel to the first direction, the angle between the second outer surface and the first outer surface is between 91° and 170°, and the angle between the second outer surface and the third outer surface is between 91° and 170°; and / or, the ratio of the diameter of the third outer surface to the diameter of the first outer surface is between 60% and 85%.

8. The medical wire locking and cutting integrated device according to claim 7, characterized in that: A portion of the first outer surface is located outside the first inner surface, another portion of the first outer surface, the second outer surface and the third outer surface are located outside the second inner surface, and the conducting port is used to connect the inner cavity with the outside through the second outer surface and the second inner surface.

9. The medical wire locking and cutting integrated device according to claim 6, characterized in that: A boss extends outward from the distal end of the wire fixing member, and in a cross section parallel to the first direction, when the locking teeth and the locking groove approach each other under the action of the first inner surface and / or the second inner surface, causing the wire fixing member to deform and lock the medical wire, the outer diameter of the boss is greater than the height of the gap.

10. The medical wire locking and cutting integrated device according to claim 9, characterized in that: The tangent piece is arranged on the locking piece and is arranged around the outer circumference of the locking piece. The locking piece is used to drive the tangent piece to move synchronously under the action of external force; wherein the length ratio of the tangent piece to the length of the locking piece is between 40% and 70%.

11. The medical wire locking and cutting integrated device according to claim 1, characterized in that: The distal end of the shell has a rounded structure; And / or, the proximal end of the cutting member has a rounded structure; And / or, the inner surface of the wire fixing member is provided with one of a threaded protrusion, a threaded groove, a plurality of protrusions arranged at intervals, and a plurality of grooves arranged at intervals, so that the inner surface of the wire fixing member forms a concave-convex structure; and / or, in a plane parallel to the first direction, a projection pattern of the locking element completely overlaps a projection pattern of the housing, so that the locking element is completely located in the housing; and / or, the angle formed between the first inner surface and the second inner surface is between 130° and 170°; And / or, the distance between the distal end of the cutting piece and the distal end of the conducting opening is between 2 mm and 4 mm.

12. A medical thread hooking device, characterized in that: Used in conjunction with the locking and cutting integrated device for medical thread according to any one of claims 1 to 11, the thread hooking device comprising a thread hooking member and a control member; The hook wire piece passes through the conducting port of the medical wire locking and cutting integrated device and the wire fixing piece of the medical wire locking and cutting integrated device and exposes the distal end of the shell of the medical wire locking and cutting integrated device, and the part of the hook wire piece exposed at the distal end of the shell forms a hook wire structure, and the hook wire piece is configured to be driven by the control part to drive the medical wire from the wire fixing piece into the inner cavity of the medical wire locking and cutting integrated device through the hook wire structure and extend out through the conducting port.

13. The medical thread hooking device according to claim 12, characterized in that: A clamping groove is provided on the side wall of the control member, and the clamping groove extends along the first direction and passes through the control member; And / or, the line hooking device also includes a limiting member, a limiting groove is provided on the limiting member, and the limiting member is used to contact the line hooking structure through the limiting groove to limit the displacement of the line hooking structure; wherein the cross-section of the limiting groove is a combination of more than two types of straight lines, broken lines and wavy lines.

14. A medical wire locking and cutting integrated system, characterized in that: It comprises an operating device, a connecting assembly, a locking and cutting integrated device for a medical thread according to any one of claims 1 to 11, and a hooking device for a medical thread according to claim 12 or 13; The connection component comprises: A connecting member, wherein the distal end of the connecting member is connected to the housing of the locking and cutting integrated device, and the proximal end of the connecting member is connected to the operating device; A transmission member, wherein the transmission member is arranged in the connecting member, the distal end of the transmission member extends into the housing and is connected to the locking member and / or the tangent member, the proximal end of the transmission member is connected to the operating device, and the transmission member is used to drive the locking member and / or the tangent member to move under the action of the operating device.

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