Prosthesis delivery system

Abstract

The present invention discloses an artificial prosthesis delivery system, comprising: a housing having an installation channel; a catheter mechanism, comprising a bracket catheter assembly, a positioning catheter assembly and a bending adjustment catheter which are mutually sleeved, the bracket being installed at the distal end of the bracket catheter assembly, and the positioning frame being installed at the distal end of the positioning catheter assembly; a control mechanism, comprising a bracket control assembly, a positioning control assembly and a bending adjustment control assembly installed at the housing, the proximal end of the bending adjustment catheter being installed at the installation channel and connected to the bending adjustment control assembly; the proximal end of the bracket catheter assembly and the proximal end of the positioning catheter assembly respectively extend into the installation channel, the proximal end of the bracket catheter assembly is connected to the bracket control assembly, and the proximal end of the positioning catheter assembly is connected to the positioning control assembly. The proximal end of the catheter mechanism and the control mechanism are both installed at the housing, the overall structure is more compact, the housing can provide better protection for the proximal end of the catheter mechanism and the control mechanism, and can improve the convenience of operation.

Description

Technical Field

[0001] The present invention relates to the field of valves, and further to an artificial prosthesis delivery system. Background Art

[0002] The heart is divided into two parts, each of which includes a ventricle and an atrium. The ventricles and atria are separated by the ventricular septum and the atrial septum. There are valves between the atria, ventricles and arteries to prevent blood from flowing back. Among them, the valve between the left atrium and the left ventricle is the mitral valve, the valve between the right atrium and the right ventricle is the tricuspid valve, the valve between the left ventricle and the aorta is the aortic valve, and the valve between the right ventricle and the pulmonary artery is the pulmonary valve.

[0003] The aforementioned valves will open and close accordingly with the contraction and relaxation of the heart, so the heart valves must be able to withstand the scouring of blood and the squeezing of blood and the surrounding valve rings for a long time. When the valve cannot be completely closed or is not fully opened, it will lead to insufficient blood supply and backflow. In order to improve the blood supply and backflow effect, doctors sometimes recommend the placement of heart valve stents through minimally invasive interventional surgery.

[0004] In the prior art, a valve stent is usually implanted into a preset position in a patient's body through a catheter using a delivery device. During the implantation process, a mobile stent is usually used together, which not only occupies a large space, but also has a complex structure and cumbersome operation. On the other hand, in the process of implanting the valve stent using an existing delivery device, it is difficult to adjust the angle of the valve stent, which results in a low implantation accuracy of the valve stent. Summary of the invention

[0005] In view of the above technical problems, the object of the present invention is to provide a transcatheter delivery device, wherein the proximal end of the catheter mechanism and the control mechanism are both installed on the shell, and the overall structure is more compact. The shell can provide better protection for the proximal end of the catheter mechanism and the control mechanism, and can improve the convenience of operation.

[0006] In order to achieve the above object, the present invention provides an artificial prosthesis delivery system, wherein the artificial prosthesis comprises a positioning frame and a bracket, and the delivery system comprises:

[0007] A housing having a mounting channel;

[0008] The catheter mechanism comprises a bracket-catheter assembly, a positioning catheter assembly and a bending-adjusting catheter which are mutually sleeved, the bracket being installed at the distal end of the bracket-catheter assembly, and the positioning frame being installed at the distal end of the positioning catheter assembly;

[0009] The control mechanism includes a support control assembly, a positioning control assembly and a bending control assembly installed on the shell, the proximal end of the bending adjustment catheter is installed on the installation channel and connected to the bending control assembly, and the bending control assembly is used to control the bending of the bending adjustment catheter and the release of the positioning frame; the proximal end of the support catheter assembly and the proximal end of the positioning catheter assembly extend into the installation channel respectively, the proximal end of the support catheter assembly is connected to the support control assembly, and the proximal end of the positioning catheter assembly is connected to the positioning control assembly, the support control assembly is used to control the distal movement of the support catheter assembly to control the positioning and release of the support, and the positioning control assembly is used to control the distal movement of the positioning catheter assembly to control the positioning and release of the positioning frame.

[0010] In the artificial prosthesis delivery system described above, the shell includes a bending adjustment shell and an implant shell, the distal end of the implant shell is rotatably mounted on the proximal end of the bending adjustment shell, the proximal end of the bending adjustment catheter extends to the bending adjustment shell, and the proximal ends of the support catheter assembly and the positioning catheter assembly extend to the implant shell. Rotating the implant shell relative to the bending adjustment shell can drive the distal ends of the support catheter assembly and the positioning catheter assembly to rotate, so as to adjust the angle of the support and the positioning frame.

[0011] The artificial prosthesis delivery system described above also includes a rotation limiter installed at the connection between the bending adjustment shell and the implant shell, and the rotation limiter has a rotation state and a limiting state. In the rotation state, the implant shell can rotate relative to the bending adjustment shell; in the limiting state, the rotation limiter can limit the implant shell and the bending adjustment shell.

[0012] In the artificial prosthesis delivery system described above, the rotation limit member includes a first limit member, a second limit member and an operating member, the first limit member is fixed to the proximal end of the bending adjustment shell, and the second limit member can be movably installed on the implant shell; in the limiting state, the second limit member abuts against the first limit member; in the rotating state, the first limit member and the second limit member are separated; the operating member is connected to the second limit member, and operating the operating member can drive the second limit member to move, so as to control the rotation limit member to switch between the rotating state and the limiting state.

[0013] In the artificial prosthesis delivery system described above, the first limiting member is a latch tooth fixed to the bending adjustment shell, the second limiting member is a block fixed to the operating member, the implant shell has a movable opening, and the operating member extends out of the movable opening at one end away from the second limiting member; the rotation limiting member also includes an elastic member, which abuts against the operating member; in the limiting state, the block is engaged with the latch tooth, and the elastic member is in an initial state; the operating member is pressed to compress the elastic member, the block is separated from the latch tooth, and the rotation limiting member is switched to the rotation state; the operating member is released, and the elastic member can push the block back into place.

[0014] In the artificial prosthesis delivery system described above, the number of the operating member, the second limiting member and the elastic member of the rotating limiting member are respectively two, the two operating members and the two second limiting members are respectively symmetrically installed on the implant shell, the two ends of the two elastic members are respectively abutted against the two operating members, and an escape space for the stent catheter assembly and the positioning catheter assembly to pass through is formed between the two elastic members arranged at intervals.

[0015] In the artificial prosthesis delivery system described above, the rotation limiter includes a first self-locking thread fixed to the bending adjustment shell and a second self-locking thread fixed to the implant shell, and the first self-locking thread is threadably matched with the second self-locking thread.

[0016] In the artificial prosthesis delivery system described above, the bending adjustment shell includes a first shell and a second shell, the installation channel corresponding to the first shell is a first channel, the installation channel corresponding to the second shell is a second channel, and the proximal end of the first shell can be telescopically installed in the second channel;

[0017] The first housing has a first rotating part, the second housing has a second rotating part, the first rotating part has a first sliding hole connected to the first channel, and the second rotating part has a second sliding hole connected to the second channel;

[0018] The bending control assembly includes a first knob, a second knob and a first traction member, the first traction member is movably mounted on the first channel, and the second traction member is fixed to the proximal end of the first shell;

[0019] The ends of the first traction member and the second traction member extend out of the first sliding hole and the second sliding hole respectively, the first knob is rotatably mounted on the first rotating part and connected to the end of the first traction member, the second knob is rotatably mounted on the second rotating part and connected to the end of the second traction member, rotating the first knob can drive the first traction member to move axially, and rotating the second knob can drive the first shell to move axially; the proximal end of the bending adjustment catheter is fixed to the first shell, and the proximal end of the bending adjustment wire of the bending adjustment catheter is fixed to the first traction member.

[0020] In the artificial prosthesis delivery system described above, the first traction member includes a traction body and traction teeth installed on the traction body, the traction body has a traction channel, and the bending adjustment catheter can be slidably installed in the traction channel.

[0021] In the artificial prosthesis delivery system described above, the side wall of the traction channel also has a limiting groove which is connected to the traction channel and extends axially, and the proximal end of the bending adjustment catheter has a limiting protrusion which protrudes outward and extends axially, and the limiting protrusion can be slidably installed in the limiting groove.

[0022] In the artificial prosthesis delivery system described above, the implant shell includes a third shell, the installation channel corresponding to the third shell is a third channel, and the third shell includes a rotating connection section, a second catheter fixing section, a third rotating part and a third catheter fixing section in sequence from the distal end to the proximal end, and the rotating connection section is rotatably connected to the bending adjustment shell;

[0023] The positioning catheter assembly comprises a second catheter and a third catheter which are sleeved on each other;

[0024] The positioning control assembly includes a second fixing member, a third pulling member, a third knob and a third fixing member, wherein the second fixing member is fixed in the third channel corresponding to the fixing section of the second catheter, and the proximal end of the second catheter is fixed to the second fixing member; the third pulling member and the third fixing member are installed in the third channel corresponding to the third rotating part, and the proximal end of the third catheter is fixedly connected to the third fixing member, and the third pulling member is fixed to the third fixing member;

[0025] The third rotating part has a third sliding hole which is connected to the third channel and extends axially. The end of the third traction member extends out of the third sliding hole. The third knob is rotatably sleeved on the third rotating part, and the third knob is connected to the end of the third traction member. Rotating the third knob can drive the third traction member to drive the third catheter to move axially.

[0026] In the artificial prosthesis delivery system described above, the proximal end of the third shell further includes a fourth rotating portion, and the installation channel corresponding to the fourth rotating portion is a fourth channel;

[0027] The implant housing further comprises a fourth housing, which comprises a telescopic connection portion and a fifth rotating portion in sequence from the distal end to the proximal end, the telescopic connection portion is telescopically mounted on the fourth channel, the mounting channel corresponding to the telescopic connection portion is the fifth channel, and the mounting channel corresponding to the fifth rotating portion is the sixth channel;

[0028] The support control assembly includes a fourth traction member, a fifth traction member, a fourth fixing member, a fifth fixing member, a fourth knob and a fifth knob, wherein the fourth knob is rotatably sleeved on the fourth rotating portion, the fifth knob is rotatably sleeved on the fifth rotating portion, the fourth traction member is fixed to the distal end of the telescopic connection portion, the fourth fixing member is fixed to the fifth channel, the fifth traction member and the fifth fixing member are movably mounted on the sixth channel, and the fifth traction member is connected to the fifth fixing member;

[0029] The stent catheter assembly comprises a fourth catheter and a fifth catheter which are sleeved with each other, the proximal end of the fourth catheter is fixed to the fourth fixing member, and the proximal end of the fifth catheter is fixed to the fifth fixing member;

[0030] The fourth rotating part has a fourth sliding hole connected to the fourth channel, the end of the fourth traction member extends out of the fourth sliding hole, the fourth knob is rotatably sleeved on the fourth rotating part and connected to the end of the fourth traction member, and rotating the fourth knob can drive the fourth traction member, the fourth fixing member, the fourth housing and the bracket catheter assembly to move synchronously axially;

[0031] The fifth rotating part has a fifth sliding hole connected to the sixth channel, and the end of the fifth traction member extends out of the fifth sliding hole. The fifth knob is rotatably mounted on the fifth rotating part and connected to the end of the fifth traction member. Rotating the fifth knob can drive the fifth traction member, the fifth fixing member and the fifth catheter to move axially.

[0032] In the artificial prosthesis delivery system described above, it also includes a positioning release assembly installed at the distal end of the positioning catheter assembly, the positioning release assembly includes a clamping arm and a control arm, the proximal end of the clamping arm is fixed to the distal end of the second catheter, the distal end of the clamping arm has a clamping claw, and the clamping claw is suitable for clamping the proximal end of the positioning frame;

[0033] The proximal end of the control arm is fixed to the distal end of the third catheter, and the distal end of the control arm has a control sleeve;

[0034] The clamping arm is slidably mounted on the control sleeve, and moving the control sleeve relative to the clamping arm can control the clamping jaw to switch between a first clamping state and a first release state. In the first release state, the clamping jaw releases the positioning frame, and in the first clamping state, the clamping jaw clamps the positioning frame.

[0035] In the artificial prosthesis delivery system described above, it also includes a stent release assembly installed at the distal end of the stent catheter assembly, the stent release assembly includes a distal sleeve and a clamping joint, the clamping joint is fixed to the distal end of the fourth catheter, the distal end of the fifth catheter extends into the distal sleeve and is fixedly connected to the distal end of the distal sleeve;

[0036] The peripheral side of the clamping joint is provided with a clamping groove for accommodating the buckle at the distal end of the bracket, and the clamping joint is telescopically mounted on the distal sleeve;

[0037] The bracket release assembly has a second clamping state and a second releasing state. In the second clamping state, the clamping joint is located in the distal sleeve, the buckle at the distal end of the bracket is located in the clamping groove, and the distal sleeve covers the opening of the clamping groove to limit the buckle;

[0038] In the second release state, the engaging groove of the engaging joint moves to the outside of the distal sleeve, the bracket expands, and the buckle is disengaged from the engaging groove.

[0039] Compared with the prior art, the artificial prosthesis delivery system provided by the present application has at least one of the following beneficial effects:

[0040] 1. In the artificial prosthesis delivery system provided in the present application, the proximal end of the catheter mechanism and the control mechanism are both installed on the housing, and the overall structure is more compact. The housing can provide better protection for the proximal end of the catheter mechanism and the control mechanism, and can improve the convenience of operation;

[0041] 2. In the artificial prosthesis delivery system provided by the present application, the implant shell is rotatable relative to the bending adjustment shell, and the angles of the positioning frame and the bracket can be adjusted as needed while the bending adjustment catheter is kept from rotating during the implantation process, so that the positioning frame and the bracket can be implanted at a preset position at a better angle, thereby improving the implantation accuracy of the positioning frame and the bracket;

[0042] 3. In the artificial prosthesis delivery system provided in the present application, before the clamping groove of the clamping joint moves to the outside of the distal sleeve, the bracket and the positioning frame can be recovered and released, thereby increasing the repeatable positioning capability, improving the intraoperative safety, and facilitating promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0044] Figure 1 and Figure 2 is a schematic diagram of the three-dimensional structure of an artificial prosthesis delivery system according to a preferred embodiment of the present invention;

[0045] Figure 3 and Figure 4 is a schematic diagram of the exploded structure of an artificial prosthesis delivery system according to a preferred embodiment of the present invention;

[0046] Figure 5 is a schematic diagram of the top view of the artificial prosthesis delivery system according to a preferred embodiment of the present invention;

[0047] Figure 6 yes Figure 5 Sectional view along line AA;

[0048] Figure 7 It is a schematic diagram of the exploded structure of the bending adjustment housing of the artificial prosthesis delivery system of the preferred embodiment of the present invention;

[0049] Figure 8 is a schematic diagram of the three-dimensional structure of the first shell of the artificial prosthesis delivery system of the preferred embodiment of the present invention;

[0050] Fig. 9 is a schematic diagram of the three-dimensional structure of the second shell of the artificial prosthesis delivery system of the preferred embodiment of the present invention;

[0051] Fig.10 yes Figure 4 Schematic diagram of the enlarged structure at a in the middle;

[0052] Fig.11 yes Fig.10 Sectional view along the midline BB;

[0053] Fig.12 yes Figure 6 Schematic diagram of the enlarged structure at point d in the middle;

[0054] Fig.13 is a schematic diagram of the exploded structure of the third shell of the artificial prosthesis delivery system of the preferred embodiment of the present invention;

[0055] Fig.14 is a schematic diagram of the three-dimensional structure of the third shell of the artificial prosthesis delivery system of the preferred embodiment of the present invention;

[0056] Fig.15 yes Figure 4 Schematic diagram of the enlarged structure at b in the middle;

[0057] Fig.16 yes Figure 6 Schematic diagram of the enlarged structure at e in the middle;

[0058] Fig.17 is a schematic diagram of the exploded structure of the fourth shell of the artificial prosthesis delivery system of the preferred embodiment of the present invention;

[0059] Fig.18 is a schematic diagram of the three-dimensional structure of the fourth shell of the artificial prosthesis delivery system of the preferred embodiment of the present invention;

[0060] Fig.19 yes Figure 4 Schematic diagram of the enlarged structure at c in the middle;

[0061] Fig. 20 yes Figure 6 Schematic diagram of the enlarged structure at point f in the middle;

[0062] Fig.21 and Fig. 22 is a schematic diagram of the distal structure of the catheter mechanism of the artificial prosthesis delivery system of the preferred embodiment of the present invention;

[0063] Fig.23 yes Fig. 22 Schematic diagram of the enlarged structure at g in the middle;

[0064] Fig.24 yes Fig. 22 Schematic diagram of the enlarged structure at h in the middle;

[0065] Fig.25 is a schematic structural diagram of an artificial prosthesis of an artificial prosthesis delivery system of a preferred embodiment of the present invention;

[0066] Fig.26 It is a schematic diagram of the artificial prosthesis implantation process of the artificial prosthesis delivery system of the preferred embodiment of the present invention.

[0067] Description of Figure Numbers:

[0068] Shell 10, installation channel 11, bending shell 12, first shell 121, first catheter fixing section 1211, second shell 122, rotation connection groove 1220, implant shell 13, third shell 131, rotation connection section 1311, second catheter fixing section 1312, third rotating part 1313, third rotation groove 1310, third catheter fixing section 1314, fourth rotating part 1315, movable opening 1316, fourth shell 132, telescopic connection part 1321, fifth rotating part 1322, fourth catheter fixing section 1323, rotation stopper 14, first stopper 14 1, second limiting member 142, operating member 143, elastic member 144, first rotating portion 151, first rotating groove 1510, second rotating portion 152, second rotating groove 1520, catheter mechanism 20, support catheter assembly 21, fourth catheter 211, fifth catheter 212, positioning catheter assembly 22, second catheter 221, third catheter 222, bending catheter 23, limiting protrusion 231, control mechanism 30, support control assembly 31, fourth traction member 311, fifth traction member 312, fourth fixing member 313, fifth fixing member 314, fourth knob 315, fifth knob 31 6, fourth drain pipe 3171, fourth sealing ring 3172, fourth fixing bolt 3173, rear end cover 3181, fifth drain pipe 3182, positioning control assembly 32, second fixing member 321, third traction member 322, third knob 323, third fixing member 324, second drain pipe 3241, second sealing ring 3242, second fixing bolt 3243, third drain pipe 3251, third sealing ring 3252, third fixing bolt 3253, bending control assembly 33, first knob 331, second knob 332, first traction member 333, traction body 3331, traction gear 3332, traction channel 3330, limiting groove 3333, limiting convex plate 3334, fixing hole 3335, fixing piece 3336, second traction piece 334, first fixing piece 335, first exhaust pipe 336, first sealing ring 337, first fixing bolt 338, positioning release assembly 40, clamping arm 41, clamping claw 411, control arm 42, control sleeve 421, bracket release assembly 50, distal sleeve 51, clamping joint 52, clamping groove 521, first section groove 5211, second section groove 5212, artificial prosthesis 200, positioning frame 201, bracket 202, connecting rod 203. DETAILED DESCRIPTION

[0069] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0070] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0071] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0072] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0074] In the present application, "proximal" and "distal" refer to the relative orientation, relative position, and direction of elements or actions relative to each other from the perspective of a doctor using the medical device. Although "proximal" and "distal" are not restrictive, "proximal" generally refers to the end of the medical device that is close to the doctor during normal operation, and "distal" generally refers to the end that first enters the patient's body.

[0075] refer to Figures 1 to 26The artificial prosthesis delivery system provided by the present invention is suitable for implanting an artificial prosthesis 200 into a preset position in a patient's body, and the artificial prosthesis 200 includes a positioning frame 201 and a support 202. The artificial prosthesis delivery system includes a shell 10, a catheter mechanism 20 and a control mechanism 30. The shell 10 has an installation channel 11; the catheter mechanism 20 includes a support catheter assembly 21, a positioning catheter assembly 22 and a bend-adjusting catheter 23 which are mutually nested, the support 202 is installed at the distal end of the support catheter assembly 21, and the positioning frame 201 is installed at the distal end of the positioning catheter assembly 22; the control mechanism 30 includes a support control assembly 31, a positioning control assembly 32 and a bend-adjusting control assembly 33 installed on the shell 10, the proximal end of the bend-adjusting catheter 23 is installed on the installation channel 11 and is connected to the bend-adjusting control assembly 33, the The bending control assembly 33 is used to control the bending of the bending adjustment catheter 23 and the release of the positioning frame 201; the proximal end of the stent catheter assembly 21 and the proximal end of the positioning catheter assembly 22 respectively extend into the installation channel 11, the proximal end of the stent catheter assembly 21 is connected to the stent control assembly 31, and the proximal end of the positioning catheter assembly 22 is connected to the positioning control assembly 32. The stent control assembly 31 is used to control the distal movement of the stent catheter assembly 21 to control the positioning and release of the stent 202, and the positioning control assembly 32 is used to control the distal movement of the positioning catheter assembly 22 to control the positioning and release of the positioning frame 201.

[0076] In the artificial prosthesis delivery system provided by the present invention, the proximal end of the catheter mechanism 20 and the control mechanism 30 are both installed on the shell 10, and the overall structure is more compact. The shell can provide better protection for the proximal end of the catheter mechanism 20 and the control mechanism 30, and can improve the convenience of operation.

[0077] Specifically, the housing 10 includes a bending adjustment housing 12 and an implant housing 13. The distal end of the implant housing 13 is rotatably mounted on the proximal end of the bending adjustment housing 12, the proximal end of the bending adjustment catheter 23 extends to the bending adjustment housing 12, the proximal ends of the support catheter assembly 21 and the positioning catheter assembly 22 extend to the implant housing 13, and the implant housing 13 can be rotated relative to the bending adjustment housing 12 to drive the distal ends of the support catheter assembly 21 and the positioning catheter assembly 22 to rotate, so as to adjust the angle of the support 202 and the positioning frame 201.

[0078] The implant shell 13 is rotatable relative to the bending adjustment shell 12. During the implantation process, the angles of the positioning frame 201 and the bracket 202 can be adjusted as needed while keeping the bending adjustment catheter 23 from rotating. This allows the positioning frame 201 and the bracket 202 to be implanted at a preset position at a better angle, thereby improving the implantation accuracy of the positioning frame 201 and the bracket 202.

[0079] Specifically, the artificial prosthesis delivery system further includes a rotation limiter 14 installed at the connection between the bending adjustment shell 12 and the implant shell 13. The rotation limiter 14 has a rotation state and a limit state. In the rotation state, the implant shell 13 can rotate relative to the bending adjustment shell 12; in the limit state, the rotation limiter 14 can limit the implant shell 13 and the bending adjustment shell 12 to limit the rotation of the implant shell 13 relative to the bending adjustment shell 12.

[0080] refer to Fig.13 and Fig.15 In some embodiments, the rotation limiter 14 includes a first limiter 141, a second limiter 142, and an operating member 143. The first limiter 141 is fixed to the proximal end of the bending adjustment shell 12, and the second limiter 142 is movably mounted on the implant shell 13; in the limiting state, the second limiter 142 abuts against the first limiter 141 to limit the implant shell 13 from rotating relative to the bending adjustment shell 12; in the rotating state, the first limiter 141 and the second limiter 142 are separated, and the implant shell 13 can rotate relative to the bending adjustment shell 12; the operating member 143 is connected to the second limiter 142, and operating the operating member 143 can drive the second limiter 142 to move relative to the first limiter 141, so as to control the rotation limiter 14 to switch between the rotating state and the limiting state.

[0081] Specifically, the first limiting member 141 is a latch tooth fixed to the bending adjustment shell 12, the second limiting member 142 is a block fixed to the operating member 143, the implant shell 13 has a movable opening 1316, and one end of the operating member 143 away from the second limiting member 142 extends out of the movable opening 1316; the rotation limiting member 14 also includes an elastic member 144, the elastic member 144 abuts against the operating member 143, and the side wall of the movable opening 1316 also has a limiting hole, and the block extends out of the limiting hole; in the limited state, the block is engaged with the latch tooth, and the elastic member 144 is in the initial state; the operating member 143 is pressed to compress the elastic member 144, the block is separated from the latch tooth, and the rotation limiting member 14 switches to the rotation state; the operating member 143 is released, and the elastic member 144 can push the block back to its position and abut against the latch tooth. That is, the second limiting member 142 is driven to move radially along the housing 10 by pressing the operating member 143 or by means of the elastic member 144, so as to control the rotation limiting member 14 to switch between the rotation state and the limiting state. In a modified embodiment, the operating member 143 can slide along the axial direction of the housing 10, and pushing the operating member 143 to slide axially relative to the housing 10 can drive the second limiting member 142 to move axially, and separate the second limiting member 142 from the first limiting member 141, and the rotation limiting member 14 switches to the rotation state; after releasing the operating member 143, the elastic member 144 can push the operating member 143 to move axially, so that the rotation limiting member 14 switches to the limiting state.

[0082] refer to Fig.13 and Fig.15 Preferably, the number of the operating member 143, the second limiting member 142 and the elastic member 144 of the rotation limiting member 14 is two respectively, the two operating members 143 and the two second limiting members 142 are symmetrically mounted on the implant housing 13, the two ends of the two elastic members 144 are respectively abutted against the two operating members 143, and an escape space for the support catheter assembly 21 and the positioning catheter assembly 22 to pass through is formed between the two elastic members 144 arranged at intervals. One end of the operating member 143 connected to the elastic member 144 has a groove for accommodating the end of the elastic member 144 to prevent the end of the elastic member 144 from sliding relative to the operating member 143. Preferably, the elastic member is a spring.

[0083] In a modified embodiment, the rotation limiter 14 includes a first self-locking thread fixed to the proximal end of the bending adjustment housing 12 and a second self-locking thread fixed to the distal end of the implant housing 13, and the first self-locking thread is threadedly matched with the second self-locking thread. The first self-locking thread and the second self-locking thread can realize a self-locking function, and when the implant housing 13 is rotated by an external force, the first self-locking thread can rotate relative to the second self-locking thread; after the external force acting on the implant housing 13 disappears, the first self-locking thread and the second self-locking thread can realize self-locking matching, thereby increasing the resistance of the implant housing 13 when rotating relative to the bending adjustment housing 12, and limiting the rotation of the implant housing 13 relative to the bending adjustment housing 12.

[0084] refer to Figure 3 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 as well as Fig.12 The bending housing 12 includes a first housing 121 and a second housing 122. The portion of the installation channel 11 corresponding to the first housing 121 is the first channel, the portion of the installation channel 11 corresponding to the second housing 122 is the second channel, and the proximal end of the first housing 121 is telescopically mounted on the second channel.

[0085] The first housing 121 has a first rotating portion 151, and the second housing 122 has a second rotating portion 152. The first rotating portion 151 has a first sliding hole connected to the first channel, and the second rotating portion 152 has a second sliding hole connected to the second channel, and the first sliding hole and the second sliding hole extend along the axial direction of the bending housing 12 respectively.

[0086] The bending control assembly 33 includes a first knob 331 , a second knob 332 , a first traction member 333 , and a second traction member 334 . The first traction member 333 is movably mounted on the first channel, and the second traction member 334 is fixed to the proximal end of the first housing 121 .

[0087] The ends of the first traction member 333 and the second traction member 334 extend out of the first sliding hole and the second sliding hole respectively. The first knob 331 is rotatably mounted on the first rotating portion 151 and connected to the end of the first traction member 333. The second knob 332 is rotatably mounted on the second rotating portion 152 and connected to the end of the second traction member 334. Rotating the first knob 331 can drive the first traction member 333 to move axially, and rotating the second knob 332 can drive the first shell 121 to move axially. The proximal end of the bending adjustment catheter 23 is fixed to the first shell 121, and the proximal end of the bending adjustment wire of the bending adjustment catheter 23 is fixed to the first traction member 333.

[0088] During use, rotating the first knob 331 relative to the first housing 121 can drive the first traction member 333 to move axially in the first channel of the first housing 121, thereby driving the proximal end of the bending adjustment wire of the bending adjustment catheter 23 to move axially, and the distal end of the bending adjustment wire is connected to the distal end of the bending adjustment catheter 23, thereby controlling the bending of the distal end of the bending adjustment catheter 23. Rotating the second knob 332 can drive the entire first housing 121 to move axially, and since the proximal end of the bending adjustment catheter 23 is fixed to the first housing 121, the bending adjustment catheter 23 can be driven to move axially.

[0089] Further, the first rotating portion 151 of the first housing 121 has a first rotating groove 1510, and the first knob 331 is rotatably mounted in the first rotating groove 1510. The two ends of the first knob 331 abut against the inner walls of the two ends of the first rotating groove 1510. When the first knob 331 is rotated relative to the first housing 121, the first knob 331 can rotate relative to the first housing 121, but will not move axially relative to the first housing 121. The inner wall of the first knob 331 has an internal thread, and the end of the first traction member 333 has meshing teeth, which are threadably matched with the internal thread. When the first knob 331 is rotated, it can push the first traction member 333 to move axially. In a modified embodiment, the inner wall of the first knob 331 is threadedly connected to the outer wall of the first rotating part 151, and the inner wall of the first knob 331 has a circumferentially arranged push groove, and the end of the first traction member 333 is rotatably installed in the push groove. When the first knob 331 is rotated relative to the first shell 121, the first knob 331 rotates and moves axially at the same time, and at the same time pushes the first traction member 333 to move axially.

[0090] The second rotating portion 152 of the second housing 122 has a second rotating groove 1520, and the second knob 332 is rotatably mounted in the second rotating groove 1520. The connection method between the second knob 332 and the second traction member 334 is similar to the connection method between the first knob 331 and the first traction member 333, and will not be repeated here.

[0091] refer to Fig.10 and Fig.11 The first traction member 333 includes a traction body 3331 and a traction tooth 3332 installed on the traction body. The traction body 3331 has a traction channel 3330, and the bending adjustment tube 23 is slidably installed in the traction channel 3330. Preferably, the traction tooth 3332 is integrally connected with the traction body 3331. Preferably, the number of the traction teeth 3332 of the first traction member 333 is more than two, and the number of the first sliding holes on the first rotating part 151 is the same as the number of the traction teeth 332, so that it can contact with the first knob 331 at multiple positions, so that the force of the first traction member 333 is more uniform and the operation is more stable.

[0092] The side wall of the traction channel 3330 also has a limiting groove 3333 that is connected to the traction channel 3330 and extends axially. The proximal end of the bending adjustment catheter 23 has a limiting protrusion 231 that protrudes outward and extends axially. The limiting protrusion 231 can be slidably installed in the limiting groove 3333. The mutual cooperation between the limiting groove 3333 and the limiting protrusion 231 can make the first traction member 333 loaded along a preset direction. On the other hand, the mutual cooperation between the limiting groove 3333 and the limiting protrusion 231 can limit the first traction member 333 in the circumferential direction, further preventing the first traction member 333 from rotating relative to the bending adjustment catheter 23.

[0093] Furthermore, the first traction member 333 further includes a limiting protrusion 3334 arranged on the traction body 3331, and a limiting groove is arranged in the first shell 121. The limiting protrusion 3334 can be slidably installed in the limiting groove. The first traction member 333 is limited by the cooperation between the limiting protrusion 3334 and the limiting groove to prevent the first traction member 333 from radial displacement.

[0094] The traction body 3331 is also provided with a fixing hole 3335 , and the first traction member 333 also includes a fixing member 3336 fixed to the traction body 3331 , and the proximal end of the bending adjustment wire of the bending adjustment catheter 23 passes through the fixing hole 3335 and is fixedly connected to the fixing member 3336 .

[0095] refer to Figure 8 as well as Fig.10 , the first housing 121 also has a first catheter fixing section 1211. The bending control assembly 33 also includes a first fixing member 335, the first fixing member 335 is fixed in the first catheter fixing section 1211, and the proximal end of the bending-adjusting catheter 23 is fixed to the first fixing member 335. Preferably, the limiting protrusion 231 is provided on the first fixing member 335, and the distal end of the first fixing member 335 connected to the bending-adjusting catheter 23 is slidably mounted on the traction channel 3330.

[0096] The bending control assembly 33 further includes a first exhaust pipe 336, a first sealing ring 337 and a first fixing bolt 338. The first exhaust pipe 336 is installed in the first conduit fixing section 1211, and is used to exhaust the gas in the gap between the bending control conduit 23 and the second conduit 221 in the positioning conduit assembly 22. The first sealing ring 337 and the first fixing bolt 338 are respectively sleeved on the positioning conduit assembly 22, and the first fixing bolt 338 is threadedly connected to the first fixing member 335 and presses the first sealing ring 337 to prevent liquid leakage.

[0097] Reference Image Figure 3 , Figure 4 , Fig.12 , Fig.13 as well as Fig.14 The implant housing 13 includes a third housing 131. The portion of the installation channel 11 corresponding to the third housing 131 is the third channel. The third housing 131 includes a rotation connection section 1311, a second catheter fixing section 1312, a third rotation portion 1313 and a third catheter fixing section 1314 from the distal end to the proximal end. The rotation connection section 1311 is rotatably connected to the bending adjustment housing 12. The proximal end of the second housing 122 has a rotation connection groove 1220. The rotation connection section 1311 of the third housing 131 is rotatably installed in the rotation connection groove 1220 and can limit the third housing 131 in the axial direction.

[0098] The positioning catheter assembly 22 includes a second catheter 221 and a third catheter 222 which are sleeved with each other. The positioning control assembly 32 includes a second fixing member 321, a third traction member 322, a third knob 323 and a third fixing member 324. The second fixing member 321 is fixed in the third channel corresponding to the second catheter fixing section 1312, and the proximal end of the second catheter 221 is fixed to the second fixing member 321; the third traction member 322 and the third fixing member 324 are installed in the third channel corresponding to the third rotating part 1313, and the proximal end of the third catheter 222 is fixedly connected to the third fixing member 324, and the third traction member 322 is fixed to the third fixing member 324.

[0099] The third rotating portion 1313 has a third sliding hole which is connected to the third channel and extends axially. The end of the third traction member 322 extends out of the third sliding hole. The third knob 323 is rotatably mounted on the third rotating portion 1313, and the third knob 323 is connected to the end of the third traction member 322. Rotating the third knob 323 can drive the third traction member 322 to drive the third conduit 222 to move axially.

[0100] The positioning control assembly 32 further includes a second exhaust pipe 3241, a second sealing ring 3242 and a second fixing bolt 3243. The second exhaust pipe 3241 is installed on the second conduit fixing section 1312, and is used to exhaust the gas between the second conduit 221 and the third conduit 222. The second sealing ring 3242 and the second fixing bolt 3243 are sleeved on the outside of the third conduit 222, and the second fixing bolt 3243 is threadedly connected to the proximal end of the second fixing member 321 and presses the second sealing ring 3242.

[0101] The positioning control assembly 32 further includes a third drain pipe 3251, a third sealing ring 3252 and a third fixing bolt 3253. The third drain pipe 3251 is installed on the third catheter fixing section 1314, and is used to discharge the liquid between the third catheter 222 and the support catheter assembly 21. The third sealing ring 3252 and the third fixing bolt 3253 are sleeved on the outside of the support catheter assembly 21, and the third fixing bolt 3253 is threadedly connected to the proximal end of the third fixing member 324 and presses the third sealing ring 3252.

[0102] Correspondingly, the third rotating portion 1313 of the third housing 131 has a third rotating groove 1310, the third knob 323 is rotatably mounted in the third rotating groove 1310, and both ends of the third knob 323 abut against the inner wall of the third rotating groove 1310. The specific connection method of the third knob 323 and the third traction member 322 is the same as the connection method of the first knob 331 and the first traction member 333, which will not be repeated here.

[0103] refer to Fig.14 Furthermore, the proximal end of the third shell 131 also includes a fourth rotating portion 1315, and the portion of the installation channel 11 corresponding to the fourth rotating portion 1315 is a fourth channel.

[0104] refer to Figure 3 , Figure 4 as well as Fig.18 The implant housing 13 further includes a fourth housing 132. The fourth housing 132 includes a telescopic connection portion 1321 and a fifth rotation portion 1322 in sequence from the distal end to the proximal end. The telescopic connection portion 1321 is telescopically mounted on the fourth channel, the portion of the mounting channel 11 corresponding to the telescopic connection portion 1321 is the fifth channel, and the portion of the mounting channel 11 corresponding to the fifth rotation portion 1322 is the sixth channel.

[0105] refer to Fig.17 and Fig.19 The support control assembly 31 includes a fourth traction member 311, a fifth traction member 312, a fourth fixing member 313, a fifth fixing member 314, a fourth knob 315 and a fifth knob 316. The fourth knob 315 is rotatably mounted on the fourth rotating portion 1315, the fifth knob 316 is rotatably mounted on the fifth rotating portion 1322, the fourth traction member 311 is fixed to the distal end of the telescopic connection portion 1321, the fourth fixing member 313 is fixed to the fifth channel, the fifth traction member 312 and the fifth fixing member 314 are movably mounted on the sixth channel, and the fifth traction member 312 is connected to the fifth fixing member 314.

[0106] refer to Fig. 20 The stent catheter assembly 21 includes a fourth catheter 211 and a fifth catheter 212 which are sleeved with each other. The proximal end of the fourth catheter 211 is fixed to the fourth fixing member 313 , and the proximal end of the fifth catheter 212 is fixed to the fifth fixing member 314 .

[0107] refer to Fig.14 as well as Fig.18The fourth rotating portion 1315 has a fourth sliding hole connected to the fourth channel, and the end of the fourth traction member 311 extends out of the fourth sliding hole. The fourth knob 315 is rotatably mounted on the fourth rotating portion 1315 and connected to the end of the fourth traction member 311. Rotating the fourth knob 315 can drive the fourth traction member 311, the fourth fixing member 313, the fourth shell 132 and the bracket catheter assembly 21 to move axially synchronously.

[0108] The fifth rotating portion 1322 has a fifth sliding hole connected to the sixth channel, and the end of the fifth traction member 312 extends out of the fifth sliding hole. The fifth knob 316 is rotatably mounted on the fifth rotating portion 1322 and connected to the end of the fifth traction member 312. Rotating the fifth knob 316 can drive the fifth traction member 312, the fifth fixing member 314 and the fifth conduit 212 to move axially.

[0109] The fourth rotating part 1315 has a fourth rotating groove, the fifth rotating part 1322 has a fifth rotating groove, the fourth knob 315 is rotatably mounted on the fourth rotating groove and abuts against the inner wall of the fourth rotating groove; the fifth knob 316 is rotatably mounted on the fifth rotating groove and abuts against the inner wall of the fifth rotating groove. The connection method between the fourth knob 315 and the fourth traction member 311, and the connection method between the fifth knob 316 and the fifth traction member 312 are the same as the connection method between the first knob 331 and the first traction member 333, which will not be repeated here.

[0110] Further, refer to Fig.18 , Fig.19 as well as Fig. 20 The fourth housing 132 further includes a fourth conduit fixing section 1323. The fourth fixing member 313 is fixed to the fourth conduit fixing section 1323. The support control assembly 31 further includes a fourth exhaust pipe 3171, a fourth sealing ring 3172 and a fourth fixing bolt 3173. The fourth exhaust pipe 3171 is installed on the fourth conduit fixing section 1323 and connected to the fourth fixing member 313, and is used to exhaust the gas between the fourth conduit 211 and the fifth conduit 212. The fourth fixing bolt 3173 and the fourth sealing ring 3172 are respectively sleeved on the fifth conduit 212, and the fourth fixing bolt 3173 is threadedly connected to the proximal end of the fourth fixing member 313 and presses the fourth sealing ring 3172.

[0111] The support control assembly 31 further includes a rear end cover 3181 and a fifth exhaust pipe 3182. The rear end cover 3181 is installed at the proximal end of the fourth housing 132, and the fifth exhaust pipe 3182 is installed at the proximal end of the fifth conduit fixing member 314 and connected to the proximal end of the fifth conduit 212 for exhausting the gas in the fifth conduit 212.

[0112] refer to Fig.21 , Fig. 22 as well as Fig.24 The artificial prosthesis delivery system further comprises a positioning release assembly 40 installed at the distal end of the positioning catheter assembly 22. The positioning release assembly 40 comprises a clamping arm 41 and a control arm 42. The proximal end of the clamping arm 41 is fixed to the distal end of the second catheter 221, and the distal end of the clamping arm 41 has a clamping claw 411, and the clamping claw 411 is suitable for clamping the proximal end of the positioning frame 201.

[0113] The proximal end of the control arm 42 is fixed to the distal end of the third catheter 222, and the distal end of the control arm 42 has a control sleeve 421. The clamping arm 41 is slidably mounted on the control sleeve 421, and the control sleeve 421 is moved relative to the clamping arm 41 to control the clamping jaw 411 to switch between a first clamping state and a first release state. In the first release state, the clamping jaw 411 releases the positioning frame 201, and in the first clamping state, the clamping jaw 411 clamps the positioning frame 201.

[0114] Preferably, the number of the clamping arms 41 and the control arms 42 is more than two, and they are symmetrically arranged to clamp the positioning frame 201 at different positions, improve the force stability of the positioning frame 201, and improve the implantation accuracy. For example but not limited to, the number of the clamping arms 41 and the control arms 42 is three.

[0115] In a modified embodiment, the proximal ends of the two or more clamping arms 41 are integrally connected, and the proximal ends of the two or more control arms 42 are also integrally connected, thereby facilitating the connection of the two or more clamping arms 41 and the two or more control arms 42 with the stent catheter assembly 21.

[0116] refer to Fig.21 and Fig. 22The artificial prosthesis delivery system further comprises a stent release assembly 50 installed at the distal end of the stent catheter assembly 21. The stent release assembly 50 comprises a distal sleeve 51 and a clamping joint 52. The clamping joint 52 is fixed to the distal end of the fourth catheter 211, and the distal end of the fifth catheter 212 extends into the distal sleeve 51 and is fixedly connected to the distal end of the distal sleeve 51. The clamping joint 52 has a clamping groove 521 on its circumferential side for accommodating the buckle at the distal end of the stent 202, and the clamping joint 52 is telescopically mounted on the distal sleeve 51.

[0117] The bracket release assembly 50 has a second clamping state and a second releasing state. In the second clamping state, the clamping joint 52 is located in the distal sleeve 51, the buckle at the distal end of the bracket 202 is located in the buckle groove 521, and the distal sleeve 51 covers the opening of the buckle groove 521 to radially limit the buckle; in the second releasing state, the distal sleeve 51 moves toward the distal end to expose the clamping joint 52, the bracket 202 expands, and the buckle disengages from the buckle groove 521.

[0118] refer to Fig.23 The clamping groove 521 includes a first groove 5211 and a second groove 5212. The first groove 5211 is arranged along the circumference of the clamping joint 52, and the second groove 5212 is arranged along the axial direction of the clamping joint 52. The width of the second groove 5212 is smaller than the width of the buckle at the distal end of the bracket 202. By providing the first groove 5211 and the second groove 5212, the bracket 202 can be limited in the axial direction, and at the same time, the different positions of the buckle can be fully accommodated, and the laminated thickness of the buckle and the clamping joint 52 can be reduced.

[0119] refer to Fig.25 The artificial prosthesis 200 further includes a connecting rod 203. The proximal end of the connecting rod 203 is connected to the proximal end of the positioning frame 201, and the distal end of the connecting rod 203 is connected to the proximal end of the bracket 202. During the implantation process, the positioning frame 201 is first implanted to a preset position and released, and then the proximal end of the bracket 202 is controlled to move into the positioning space of the positioning frame 201 and move proximally to the preset position. The connecting rod 203 can bend continuously during the movement of the bracket 202.

[0120] Before the distal end of the catheter mechanism 20 moves to the preset position, the distal sleeve 51 is sleeved on the outside of the bracket 202 in the contracted state, the distal end of the bending adjustment catheter 23 is sleeved on the outside of the positioning frame 201 in the contracted state, and the proximal end of the distal sleeve 51 abuts against the distal end of the bending adjustment catheter, which can reduce the volume of the artificial prosthesis during the implantation process and avoid contact with the outside world.

[0121] After the distal end of the catheter mechanism 20 moves to the preset position, the second knob 332 is rotated to control the bending catheter 23 to move proximally to expose the positioning frame 201, and the positioning frame 201 expands radially; the implant shell 13 is rotated relative to the bending shell 12 to adjust the positioning frame 201 to a suitable angle to accurately position it at the bottom of the aortic sinus; the fourth knob 315 is turned to control the fourth catheter 211 and the fifth catheter 212 to move proximally to drive the proximal end of the stent 202 to the preset position in the positioning space of the positioning frame 201; the fifth knob 316 is rotated to control the fifth catheter 212 to drive the distal end The end sleeve 51 moves toward the distal end, so that the snap-in groove 521 of the snap joint 52 is exposed from the outside of the distal sleeve 51, the stent 202 expands radially, and the distal buckle of the stent 202 disengages from the snap-in groove 521, so that the native valve is located between the stent 202 and the positioning frame 201; the third knob 323 is turned to control the third catheter 222 to move proximally, so as to drive the control sleeve 421 to move proximally relative to the clamping arm 41, and the positioning release assembly 40 switches to the first release state, and the clamping claw 411 releases the proximal end of the positioning member 201, so as to achieve complete separation of the artificial prosthesis 200 from the artificial prosthesis delivery system.

[0122] It should be pointed out that before the clamping groove 521 of the clamping joint 52 is exposed from the distal sleeve 51, the bracket 202 and the positioning frame 201 can be recovered to the distal end of the distal sleeve 51 and the bending-adjusting catheter 23 and then released, thereby increasing the repeat positioning capability, improving the safety during surgery, and facilitating the popularization and application. For example, when the bracket 202 and the positioning frame 201 need to be recovered, the fifth knob 316 is rotated to drive the fifth catheter 212 and the distal sleeve 51 to move proximally, so that the bracket 202 and the positioning frame 201 are gathered and enter the distal sleeve 51; the third knob 323 is rotated to drive the third catheter 222 and the control sleeve 421 to move distally, so as to push the clamping claw 411 to clamp the proximal end of the positioning member 201; the second knob 332 is rotated to drive the bending-adjusting catheter 23 to move distally and be sleeved on the outer side of the positioning member 201.

[0123] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An artificial prosthesis delivery system, wherein the artificial prosthesis comprises a positioning frame and a bracket, characterized in that: The delivery system includes: A housing having a mounting channel, comprising a bending adjustment housing and an implantation housing; A rotation limiter is installed at the connection between the bending adjustment shell and the implant shell; the rotation limiter has a rotation state and a limit state, and comprises a first limiter, a second limiter and an operating member, wherein the first limiter is fixed to the proximal end of the bending adjustment shell, and the second limiter is movably installed on the implant shell; in the limit state, the second limiter abuts against the first limiter; in the rotation state, the first limiter and the second limiter are separated; the operating member is connected to the second limiter, and operating the operating member can drive the second limiter to move, so as to control the rotation limiter to switch between the rotation state and the limit state; The catheter mechanism comprises a bracket-catheter assembly, a positioning catheter assembly and a bending-adjusting catheter which are mutually sleeved, the bracket being installed at the distal end of the bracket-catheter assembly, and the positioning frame being installed at the distal end of the positioning catheter assembly; The control mechanism includes a support control assembly, a positioning control assembly and a bending control assembly installed on the shell, the proximal end of the bending adjustment catheter is installed on the installation channel and connected to the bending control assembly, and the bending control assembly is used to control the bending of the bending adjustment catheter and the release of the positioning frame; the proximal end of the support catheter assembly and the proximal end of the positioning catheter assembly extend into the installation channel respectively, the proximal end of the support catheter assembly is connected to the support control assembly, and the proximal end of the positioning catheter assembly is connected to the positioning control assembly, the support control assembly is used to control the distal movement of the support catheter assembly to control the positioning and release of the support, and the positioning control assembly is used to control the distal movement of the positioning catheter assembly to control the positioning and release of the positioning frame.

2. The artificial prosthesis delivery system according to claim 1, characterized in that: The distal end of the implant shell is rotatably mounted on the proximal end of the bending adjustment shell, the proximal end of the bending adjustment catheter extends to the bending adjustment shell, and the proximal ends of the support catheter assembly and the positioning catheter assembly extend to the implant shell. Rotating the implant shell relative to the bending adjustment shell can drive the distal ends of the support catheter assembly and the positioning catheter assembly to rotate, so as to adjust the angle of the support and the positioning frame.

3. The artificial prosthesis delivery system according to claim 2, characterized in that: In the rotating state, the implant shell can rotate relative to the bending adjustment shell; in the limiting state, the rotation limiting member can limit the implant shell and the bending adjustment shell.

4. The artificial prosthesis delivery system according to claim 3, characterized in that: The first limiting member is a latching tooth fixed to the bending adjustment housing, the second limiting member is a clamping block fixed to the operating member, the implant housing has a movable opening, and one end of the operating member away from the second limiting member extends out of the movable opening; the rotation limiting member also includes an elastic member, which abuts against the operating member; in the limiting state, the clamping block is clamped on the latching tooth, and the elastic member is in the initial state; the operating member is pressed to compress the elastic member, the clamping block is separated from the latching tooth, and the rotation limiting member is switched to the rotation state; When the operating member is released, the elastic member can push the block back into place.

5. The artificial prosthesis delivery system according to claim 4, characterized in that: The number of the operating member, the second limiting member and the elastic member of the rotation limiting member are respectively two, the two operating members and the two second limiting members are symmetrically installed on the implant shell, the two ends of the two elastic members are respectively abutted against the two operating members, and an escape space for the support catheter assembly and the positioning catheter assembly to pass through is formed between the two elastic members arranged at intervals.

6. The artificial prosthesis delivery system according to claim 3, characterized in that: The rotation limiting member includes a first self-locking thread fixed to the bending adjustment housing and a second self-locking thread fixed to the implant housing, and the first self-locking thread is threadably matched with the second self-locking thread.

7. The artificial prosthesis delivery system according to any one of claims 2 to 6, characterized in that: The bending adjustment housing comprises a first housing and a second housing, the installation channel corresponding to the first housing is a first channel, the installation channel corresponding to the second housing is a second channel, and the proximal end of the first housing can be telescopically installed in the second channel; The first housing has a first rotating part, the second housing has a second rotating part, the first rotating part has a first sliding hole connected to the first channel, and the second rotating part has a second sliding hole connected to the second channel; The bending control assembly includes a first knob, a second knob and a first traction member, the first traction member is movably mounted on the first channel, and the second traction member is fixed to the proximal end of the first shell; The ends of the first traction member and the second traction member extend out of the first sliding hole and the second sliding hole respectively, the first knob is rotatably mounted on the first rotating part and connected to the end of the first traction member, the second knob is rotatably mounted on the second rotating part and connected to the end of the second traction member, rotating the first knob can drive the first traction member to move axially, and rotating the second knob can drive the first shell to move axially; the proximal end of the bending adjustment catheter is fixed to the first shell, and the proximal end of the bending adjustment wire of the bending adjustment catheter is fixed to the first traction member.

8. The artificial prosthesis delivery system according to claim 7, characterized in that: The first traction member includes a traction body and traction teeth installed on the traction body. The traction body has a traction channel, and the bending adjustment catheter is slidably installed on the traction channel.

9. The artificial prosthesis delivery system according to claim 8, characterized in that: The side wall of the traction channel also has a limiting groove which is connected to the traction channel and extends axially. The proximal end of the bending adjustment catheter has a limiting protrusion which protrudes outward and extends axially. The limiting protrusion can be slidably installed in the limiting groove.

10. The artificial prosthesis delivery system according to any one of claims 2 to 6, characterized in that: The implant shell includes a third shell, the installation channel corresponding to the third shell is a third channel, the third shell includes a rotating connection section, a second catheter fixing section, a third rotating part and a third catheter fixing section in sequence from the distal end to the proximal end, and the rotating connection section is rotatably connected to the bending adjustment shell; The positioning catheter assembly comprises a second catheter and a third catheter which are sleeved on each other; The positioning control assembly includes a second fixing member, a third pulling member, a third knob and a third fixing member, wherein the second fixing member is fixed in the third channel corresponding to the fixing section of the second catheter, and the proximal end of the second catheter is fixed to the second fixing member; The third pulling member and the third fixing member are installed in the third channel corresponding to the third rotating part, and the proximal end of the third catheter is fixedly connected to the third fixing member, and the third pulling member is fixed to the third fixing member; The third rotating part has a third sliding hole which is connected to the third channel and extends axially. The end of the third traction member extends out of the third sliding hole. The third knob is rotatably sleeved on the third rotating part, and the third knob is connected to the end of the third traction member. Rotating the third knob can drive the third traction member to drive the third catheter to move axially.

11. The artificial prosthesis delivery system according to claim 10, characterized in that: The proximal end of the third housing further includes a fourth rotating portion, and the installation channel corresponding to the fourth rotating portion is a fourth channel; The implant housing further comprises a fourth housing, which comprises a telescopic connection portion and a fifth rotating portion in sequence from the distal end to the proximal end, the telescopic connection portion is telescopically mounted on the fourth channel, the mounting channel corresponding to the telescopic connection portion is the fifth channel, and the mounting channel corresponding to the fifth rotating portion is the sixth channel; The support control assembly includes a fourth traction member, a fifth traction member, a fourth fixing member, a fifth fixing member, a fourth knob and a fifth knob, wherein the fourth knob is rotatably sleeved on the fourth rotating portion, the fifth knob is rotatably sleeved on the fifth rotating portion, the fourth traction member is fixed to the distal end of the telescopic connection portion, the fourth fixing member is fixed to the fifth channel, the fifth traction member and the fifth fixing member are movably mounted on the sixth channel, and the fifth traction member is connected to the fifth fixing member; The stent catheter assembly comprises a fourth catheter and a fifth catheter which are sleeved with each other, the proximal end of the fourth catheter is fixed to the fourth fixing member, and the proximal end of the fifth catheter is fixed to the fifth fixing member; The fourth rotating part has a fourth sliding hole connected to the fourth channel, the end of the fourth traction member extends out of the fourth sliding hole, the fourth knob is rotatably sleeved on the fourth rotating part and connected to the end of the fourth traction member, and rotating the fourth knob can drive the fourth traction member, the fourth fixing member, the fourth housing and the bracket catheter assembly to move synchronously axially; The fifth rotating part has a fifth sliding hole connected to the sixth channel, and the end of the fifth traction member extends out of the fifth sliding hole. The fifth knob is rotatably mounted on the fifth rotating part and connected to the end of the fifth traction member. Rotating the fifth knob can drive the fifth traction member, the fifth fixing member and the fifth catheter to move axially.

12. The artificial prosthesis delivery system according to claim 11, characterized in that: It also includes a positioning release assembly installed at the distal end of the positioning catheter assembly, the positioning release assembly includes a clamping arm and a control arm, the proximal end of the clamping arm is fixed to the distal end of the second catheter, the distal end of the clamping arm has a clamping claw, and the clamping claw is suitable for clamping the proximal end of the positioning frame; The proximal end of the control arm is fixed to the distal end of the third catheter, and the distal end of the control arm has a control sleeve; The clamping arm is slidably mounted on the control sleeve, and moving the control sleeve relative to the clamping arm can control the clamping jaw to switch between a first clamping state and a first release state. In the first release state, the clamping jaw releases the positioning frame, and in the first clamping state, the clamping jaw clamps the positioning frame.

13. The artificial prosthesis delivery system according to claim 12, characterized in that: It also includes a stent release assembly installed at the distal end of the stent catheter assembly, the stent release assembly includes a distal sleeve and a clamping joint, the clamping joint is fixed to the distal end of the fourth catheter, the distal end of the fifth catheter extends into the distal sleeve and is fixedly connected to the distal end of the distal sleeve; The peripheral side of the clamping joint is provided with a clamping groove for accommodating the buckle at the distal end of the bracket, and the clamping joint is telescopically mounted on the distal sleeve; The bracket release assembly has a second clamping state and a second releasing state. In the second clamping state, the clamping joint is located in the distal sleeve, the buckle at the distal end of the bracket is located in the clamping groove, and the distal sleeve covers the opening of the clamping groove to limit the buckle; In the second release state, the engaging groove of the engaging joint moves to the outside of the distal sleeve, the bracket expands, and the buckle is disengaged from the engaging groove.

Images