Delivery device for heart valve prosthesis

Abstract

The invention provides a delivery device for a heart valve prosthesis. The delivery device comprises a shell, wherein a mounting space is formed in the shell; the wire guide shaft is mounted in the mounting space, and one end of the wire guide shaft is exposed on the outer side of the shell; the conveying part is arranged on the outer side of the wire guide shaft in a sleeving mode, the conveying part can move on the wire guide shaft, and one end of the conveying part is exposed to the outer side of the shell; the fixing structure is fixed to the guide wire shaft and clamped between the conveying part and the guide wire shaft, a third containing cavity is formed among the fixing structure, the conveying part and the guide wire shaft, and a valve prosthesis is fixed in the third containing cavity; the locking mechanism is arranged at the end, close to the fixing structure, of the shell, the conveying part is sleeved with the locking mechanism, the locking mechanism can rotate relative to the shell, and the locking mechanism is used for limiting movement of the conveying part on the wire guide shaft. The heart valve prosthesis delivery device can solve the technical problem that in a heart valve prosthesis delivery device, due to the fact that the delivery structure is complex, the delivery efficiency is low.

Description

Technical Field

[0001] This invention relates to the field of heart valve technology, and more specifically, to a delivery device for a heart valve prosthesis. Background Technology

[0002] With the continuous development of medical technology, heart valve replacement has become an effective treatment for certain congenital heart diseases, valvular stenosis, and valvular insufficiency. However, heart valve replacement surgery is a complex procedure, and accurately delivering the heart valve prosthesis to the designated position is crucial, while also carrying high surgical risks. In traditional open-heart surgery, delivering the valve prosthesis to the designated position is not easy. Therefore, to ensure the successful completion of heart valve replacement surgery, precise delivery of the heart valve prosthesis to the replacement site is necessary.

[0003] In related technologies, although there are delivery devices that can transport valve prostheses to a designated location on the heart, the delivery structure is relatively complex and the delivery efficiency is low, which increases the difficulty of the surgery and raises the cost of the surgery. Summary of the Invention

[0004] This invention can solve the technical problem of low delivery efficiency caused by the complex delivery structure in the delivery device for heart valve prostheses.

[0005] To address the aforementioned problems, this invention provides a heart valve prosthesis delivery device, comprising: a housing with an installation space within it; a guidewire shaft mounted in the installation space, with one end of the guidewire shaft exposed outside the housing; a delivery section sleeved on the outside of the guidewire shaft, movable on the guidewire shaft, with one end of the delivery section exposed outside the housing; a fixing structure fixed to the guidewire shaft and sandwiched between the delivery section and the guidewire shaft, forming a third receiving cavity where a valve prosthesis is fixed; and a locking mechanism disposed at one end of the housing near the fixing structure, sleeved on the outside of the delivery section, and rotatable relative to the housing, the locking mechanism restricting the movement of the delivery section on the guidewire shaft; wherein, by adjusting the locking mechanism, the delivery section can be moved on the guidewire shaft to expose the valve prosthesis outside the delivery section.

[0006] Compared with existing technologies, the technical effects achieved by this solution are as follows: the delivery unit achieves the purpose of delivering the valve prosthesis; the fixation device can fix the valve prosthesis on the guidewire shaft, and then the delivery unit can deliver the valve prosthesis to the designated position in the heart, thereby improving the delivery efficiency of the delivery device; the locking structure enables control of the movement of the delivery unit, and the locking structure can control the movement of the delivery unit on the guidewire shaft, thereby enabling control of the speed of the delivery unit during the delivery of the valve prosthesis, thus effectively improving the delivery efficiency of the delivery device.

[0007] Furthermore, in this invention, the conveying unit includes: a first conveying unit disposed in the installation space; and a second conveying unit, the first end of which is located within the installation space and connected to the first conveying unit, the second end of which is exposed outside the housing, and a fixing structure is clamped between the second end and the guide wire shaft.

[0008] Compared with existing technologies, the technical effects achieved by this solution are as follows: by adjusting the first and second delivery units, the valve prosthesis can be delivered to the designated location on the heart, thereby effectively improving the delivery efficiency of the valve prosthesis, saving delivery time, and reducing the difficulty of the surgery.

[0009] Furthermore, in this invention, a first receiving groove is provided at a position of the second conveying part near the first conveying part, and the locking mechanism includes: a first locking member, which is sleeved on the outside of the second conveying part and connected to the side of the housing near the fixed structure, and the first locking member can rotate relative to the housing and the second conveying part; a second locking member, which is sandwiched between the first locking member and the housing, and the second locking member is provided with a first locking block that engages with the first receiving groove; wherein, by rotating the first locking member, the first locking member can drive the second locking member to move, so that the first locking block engages with or separates from the first receiving groove.

[0010] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: The setting of the first locking member and the second locking member realizes the locking and releasing of the first transmission part and the second transmission part. When the first receiving groove of the first locking member and the first snap-fit ​​block of the second locking member are engaged, the first transmission part and the second transmission part can be locked, thereby preventing the automatic displacement of the first transmission part and the second transmission part, effectively ensuring the safety of the valve prosthesis delivery process, and further improving the delivery efficiency of the valve prosthesis.

[0011] Furthermore, in this invention, the first locking member is provided with a third locking groove and a fourth locking groove, and the second locking member is provided with a second locking block and a third locking block; wherein, when the first locking member rotates, the second locking block can move within the third locking groove; and the third locking block can move within the fourth locking groove.

[0012] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: the rotational connection between the first and second locking components improves the unlocking and locking efficiency and reduces the difficulty of transporting the valve prosthesis during surgery.

[0013] Furthermore, in this invention, the first snap-fit ​​groove is provided with a first sidewall, a second sidewall, and a first side and a second side; wherein, a first distance H1 is formed between the second sidewall at the first side and the outer edge of the first locking member; a second distance H2 is formed between the second sidewall at the second side and the outer edge of the first locking member; and the first distance H1 and the second distance H2 satisfy: H1 > H2.

[0014] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: after H1>H2 between the first distance H1 and the second distance H2, the first locking member can engage the first locking block in the first receiving groove during rotation; in this process, locking and unlocking between the first and second transmission parts are guaranteed, thereby improving the locking and unlocking efficiency and further improving the delivery efficiency of the valve prosthesis.

[0015] Furthermore, in this invention, when the first locking member rotates, the second locking block can move from the first side to the second side in the third locking groove, or the second locking block can move from the second side to the first side in the third locking groove; wherein, when the second locking block can move from the first side to the second side, the first locking block engages with the first receiving groove; when the second locking block moves from the second side to the first side, the first locking block separates from the first receiving groove.

[0016] Compared with existing technologies, the technical effects achieved by this solution are as follows: When the second locking block can move from the first side to the second side in the third locking slot, the first locking block engages with the first receiving slot, and the first and second conveying parts are locked; when the second locking block can move from the second side to the first side in the third locking slot, the first locking block separates from the first receiving slot, and the first and second conveying parts are unlocked; the engagement and separation of the first locking block with the first receiving slot realizes the locking and unlocking of the first and second conveying parts, improving the locking and unlocking efficiency and further enhancing the delivery efficiency of the valve prosthesis.

[0017] Furthermore, in this invention, the first conveying part is provided with a first movable member and a second movable member at both ends, and a first fixed member is provided inside the first conveying part; wherein, a first receiving cavity is formed between the first movable member and the first fixed member, and a second receiving cavity is formed between the second movable member and the first fixed member; when the first conveying part moves relative to the guide wire shaft in a first direction, the volume of the first receiving cavity increases and the volume of the second receiving cavity decreases; when the first conveying part moves relative to the guide wire shaft in a second direction, the volume of the first receiving cavity decreases and the volume of the second receiving cavity increases.

[0018] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: when the first delivery unit moves in the first or second direction, the volumes of the first and second receiving cavities will change accordingly. At the same time, the movement direction of the first and second delivery units can be determined based on the change in the volume of the first and second receiving cavities. In this process, the delivery device can ensure the delivery of the valve prosthesis and improve the delivery efficiency.

[0019] Furthermore, in this invention, the delivery device further includes: a conveying structure disposed in the installation space, connected to the first conveying part, and located at the end of the first conveying part away from the second conveying part, the conveying structure being used to drive the first conveying part and the second conveying part to move.

[0020] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: the transmission structure can drive the first transmission part to move, and further, since the first transmission part is connected to the second transmission part, the transmission structure drives the second transmission part to move synchronously while driving the first transmission part, thereby improving the delivery efficiency of the valve prosthesis.

[0021] Furthermore, in this invention, the delivery structure includes: a first liquid delivery pipe connected to a first receiving cavity for delivering physiological saline to the first receiving cavity; and a second liquid delivery pipe connected to a second receiving cavity for delivering physiological saline to the second receiving cavity.

[0022] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: the arrangement of the first liquid delivery tube and the second liquid delivery tube enables the driving of the first delivery unit and the second delivery unit. By introducing physiological saline into the first and second receiving cavities, the first and second movable parts can move along the first or second direction on the guidewire shaft. In this process, the delivery efficiency of the first and second delivery units is improved, and the delivery efficiency of the valve prosthesis is further improved.

[0023] Furthermore, in this invention, the guidewire shaft is provided with a guidewire shaft cavity, and the transmission structure further includes: a third liquid delivery tube, the second liquid delivery tube being connected to the guidewire shaft cavity for delivering physiological saline to the guidewire shaft cavity; and a fourth liquid delivery tube, the fourth liquid delivery tube being connected to the third receiving cavity for delivering physiological saline to the third receiving cavity.

[0024] Compared with existing technologies, the technical effects achieved by this solution are as follows: after the delivery device delivers the valve prosthesis to the appropriate position on the heart, saline solution is introduced into the guidewire shaft cavity through the third fluid delivery tube to remove air from the guidewire shaft cavity and ensure the safety of the surgery.

[0025] In summary, by adopting the technical solution of the present invention, the following technical effects can be achieved:

[0026] i) The purpose of delivering the valve prosthesis is achieved by setting up a delivery unit. The fixation device can fix the valve prosthesis on the guidewire shaft, and then the delivery unit can deliver the valve prosthesis to the designated position in the heart, thereby improving the delivery efficiency of the delivery device. The locking structure enables the control of the movement of the delivery unit. The locking structure can control the movement of the delivery unit on the guidewire shaft, thereby enabling the control of the speed of the delivery unit during the delivery of the valve prosthesis, thus effectively improving the delivery efficiency of the delivery device.

[0027] ii) The first locking member and the second locking member enable locking and releasing of the first and second conveying parts. When the first receiving groove of the first locking member and the first snap-fit ​​block of the second locking member are engaged, the first and second conveying parts can be locked, thereby preventing the first and second conveying parts from automatically shifting, effectively ensuring the safety of the valve prosthesis delivery process, and further improving the delivery efficiency of the valve prosthesis.

[0028] iii) When the second locking block can move from the first side to the second side in the third locking slot, the first locking block engages with the first receiving slot, and the first and second conveying parts are locked at this time; when the second locking block can move from the second side to the first side in the third locking slot; when the second locking block moves from the second side to the first side, the first locking block separates from the first receiving slot, and the first and second conveying parts are unlocked at this time; the engagement and separation of the first locking block with the first receiving slot realizes the locking and unlocking of the first and second conveying parts, which improves the locking and unlocking efficiency and further improves the delivery efficiency of the valve prosthesis. Attached image description:

[0029] Figure 1 A schematic diagram of the delivery device for the heart valve prosthesis provided by the present invention;

[0030] Figure 2 for Figure 1 Top view;

[0031] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0032] Figure 4 for Figure 3 A partial schematic diagram;

[0033] Figure 5 for Figure 3 A schematic diagram of the cooperation between the fixed structure and the second conveying unit;

[0034] Figure 6 for Figure 1 A schematic diagram of the locking mechanism;

[0035] Figure 7 for Figure 6 A schematic diagram of the structure of the first locking component;

[0036] Figure 8 for Figure 1 Internal structure diagram;

[0037] Figure 9 for Figure 8 Enlarged view at point B;

[0038] Figure 10 for Figure 8 A magnified view of point C in the middle.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100 - Delivery device; 10 - Housing; 11 - Installation space; 20 - Conveying structure; 21 - First liquid delivery pipe; 22 - Second liquid delivery pipe; 23 - Third liquid delivery pipe; 24 - Fourth liquid delivery pipe; 30 - Conveying section; 31 - First conveying section; 311 - First receiving cavity; 312 - Second receiving cavity; 32 - Second conveying section; 321 - First pushing pipe; 322 - Second pushing pipe; 323 - First receiving groove; 324 - Second receiving groove; 325 - Third receiving groove; 326 - First end; 327 - Second end; 33 - First movable member; 34 - Second movable member; 35 - First fixing member ; 36-Connecting plate; 361-First connecting hole; 362-Second connecting hole; 363-Third connecting hole; 364-Fourth connecting hole; 40-Guide shaft; 70-Conveying head; 80-Locking mechanism; 81-First locking element; 811-First locking groove; 812-Second locking groove; 8121-First side wall; 8122-Second side wall; 813-Outer edge; 814-First side; 815-Second side; 82-Second locking element; 821-First locking block; 822-Second locking block; 823-Third locking block; 90-Fixing structure; 91-Fixing tube; 92-Fixing block; 93-Third receiving cavity. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the description of the present invention, it should be understood that the terms "lateral," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0042] Preferred, see Figures 1-5This invention provides a heart valve prosthesis delivery device. The delivery device 100 can deliver the valve prosthesis to the mitral valve position. Specifically, the delivery device 100 includes: a housing 10, a guidewire shaft 40, and a conveying part 30. The housing 10 has an installation space 11. The guidewire shaft 40 is installed in the installation space 11, and one end of the guidewire shaft 40 is exposed outside the housing 10. The conveying part 30 is sleeved on the outside of the guidewire shaft 40 and can move on the guidewire shaft 40. One end of the conveying part 30 is exposed outside the housing 10. By setting the conveying part 30, the purpose of delivering the valve prosthesis is achieved. The fixing device can fix the valve prosthesis on the guidewire shaft, and then the conveying part 30 can deliver the valve prosthesis to the designated position in the heart, thereby improving the delivery efficiency of the delivery device 100.

[0043] Furthermore, a guidewire lumen (not shown in the figure) is provided inside the guidewire shaft 40, and a guidewire is provided inside the guidewire lumen. When the delivery device 100 delivers the valve prosthesis, the guidewire can guide the delivery device 100 to the position of the mitral valve of the heart.

[0044] Preferably, the delivery device 100 further includes: a fixing structure 90 and a locking mechanism 80; the fixing structure 90 is fixed to the guide wire shaft 40 and sandwiched between the conveying part 30 and the guide wire shaft 40, and a third receiving cavity 93 is formed between the fixing structure 90, the conveying part 30 and the guide wire shaft 40, and a valve prosthesis is fixed in the third receiving cavity 93; the locking mechanism 80 is disposed at one end of the housing 10 near the fixing structure 90, sleeved on the outside of the conveying part 30, and the locking mechanism 80 is rotatable relative to the housing 10. The locking mechanism 80 is used to restrict the movement of the delivery unit 30 on the guidewire shaft 40. By adjusting the locking mechanism 80, the delivery unit 30 can move on the guidewire shaft 40 to expose the valve prosthesis to the outside of the delivery unit 30. The locking mechanism 80 enables control over the movement of the delivery unit 30. The locking mechanism 80 can control the movement of the delivery unit 30 on the guidewire shaft 40, thereby controlling the speed of the delivery unit 30 in delivering the valve prosthesis, thus effectively improving the delivery efficiency of the delivery device 100.

[0045] Furthermore, both the fixing structure 90 and the locking mechanism 80 are located on the outside of the housing 10. The fixing structure 90 is used to fix the valve prosthesis, and the locking mechanism 80 is used to lock and unlock the transmission part 30. When the locking mechanism 80 is unlocked, the transmission part 30 can move on the guide wire shaft 40. When the locking mechanism 80 is locked, the transmission part 30 cannot move on the guide wire shaft 40.

[0046] Preferably, the conveying section 30 includes: a first conveying section 31 and a second conveying section 32; the first conveying section 31 is disposed in the mounting space 11; the first end 326 of the second conveying section 32 is located in the mounting space 11 and connected to the first conveying section 31, the second end 327 is exposed outside the housing 10, and the fixing structure 90 is clamped between the second end 327 and the guide wire shaft 40; wherein, both the first conveying section 31 and the second conveying section 32 are configured as conveying tube structures, and the first conveying section 31 is completely disposed inside the housing 10, and one end of the second conveying section 32 is located inside the housing 10, and the other end is located outside the housing 10.

[0047] Furthermore, a conveying head 70 is provided at the end of the guide wire shaft 40, and the second conveying part 32 includes: a first pushing tube 321 and a second pushing tube 322; the first pushing tube 321 is located on the side of the guide wire shaft 40 close to the housing, the left end of the first pushing tube 321 is located inside the housing 10 and is connected to the second conveying part 32, and the right end of the first pushing tube 321 is connected to the second pushing tube 322.

[0048] Furthermore, the fixing structure 90 includes a fixing tube 91 and a fixing block 92; the fixing tube 91 is disposed inside the second push tube 322 and is fixed on the guide wire shaft 40, and the fixing block 92 is disposed at the end of the fixing tube 91 away from the first push tube 321. The fixing tube 91 is used to fix the valve prosthesis; at the same time, the fixing block 92, the guide wire shaft 40, the second push tube 322 and the delivery head 70 form a third receiving cavity 93, and the valve prosthesis is located in the third receiving cavity 93.

[0049] Preferred, see Figures 6-8 The second conveying part 32 is provided with a first receiving groove 323 near the first conveying part 31. The locking mechanism 80 includes a first locking member 81 and a second locking member 82. The first locking member 81 is sleeved on the outside of the second conveying part 32 and connected to the side of the housing 10 near the fixed structure. The first locking member 81 can rotate relative to the housing 10 and the second conveying part 32. The second locking member 82 is sandwiched between the first locking member 81 and the housing 10. The second locking member 82 is provided with a first locking block 821 that engages with the first receiving groove 323. By rotating the first locking member 81, the first locking member 81 can drive the second locking member 82 to move, so that the first locking block 821 engages with or separates from the first receiving groove 323.

[0050] Furthermore, the first locking member 81 is provided with a first locking groove 811 and a second locking groove 812, and the second locking member 82 is provided with a second locking block 822 and a third locking block 823; wherein, when the first locking member 81 rotates, the second locking block 822 can move within the first locking groove 811; and the third locking block 823 can move within the second locking groove 812.

[0051] Preferably, the first locking groove 811 is provided with a first sidewall 8121, a second sidewall 8122, a first sidewall 814, and a second sidewall 815; wherein, a first distance H1 is formed between the second sidewall 8122 at the first sidewall 814 and the outer edge 813 of the first locking member 81; a second distance H2 is formed between the second sidewall 8122 at the second sidewall 815 and the outer edge 813 of the first locking member 81; and the first distance H1 and the second distance H2 satisfy: H1 > H2.

[0052] It should be noted that when the first locking member 81 rotates, the second locking block 822 can move from the first side 814 to the second side 815 of the first locking groove 811, or the second locking block 822 can move from the second side 815 to the first side 814 of the first locking groove 811; wherein, when the second locking block 822 can move from the first side 814 to the second side 815, the first locking block 821 engages with the first receiving groove 323; when the second locking block 822 moves from the second side 815 to the first side 814, the first locking block 821 separates from the first receiving groove 323.

[0053] Preferred, see Figure 4 as well as Figures 9-10 The first conveying section 31 has a first movable member 33 and a second movable member 34 at both ends, and a first fixed member 35 is provided inside the first conveying section 31. A first receiving cavity 311 is formed between the first movable member 33 and the first fixed member 35, and a second receiving cavity 312 is formed between the second movable member 34 and the first fixed member 35. When the first conveying section 31 moves relative to the guide wire shaft 40 in a first direction, the volume of the first receiving cavity 311 increases and the volume of the second receiving cavity 312 decreases. When the first conveying section moves relative to the guide wire shaft 40 in a second direction, the volume of the first receiving cavity 311 decreases and the volume of the second receiving cavity 312 increases. It should be noted that in this invention, the first direction is to the left and the second direction is to the right.

[0054] Furthermore, the second conveying part 32 is provided with a second receiving groove 324 near the first conveying part 31, the second locking member 82 is clamped between the first locking member 81 and the housing 10, and the second movable member 34 is engaged with the second receiving groove 324, so that the first conveying part 31 can drive the second conveying part 32 to move synchronously when it is in motion.

[0055] Preferably, the delivery device 100 further includes a conveying structure 20; the conveying structure 20 is disposed in the installation space 11, connected to the first conveying part 31, and located at the end of the first conveying part 31 away from the second conveying part 32, and the conveying structure 20 is used to drive the first conveying part 31 and the second conveying part 32 to move.

[0056] Preferably, the delivery structure 20 includes: a first liquid delivery pipe 21 and a second liquid delivery pipe 22; the first liquid delivery pipe 21 is connected to the first receiving cavity 311 for delivering saline solution to the first receiving cavity 311; the second liquid delivery pipe 22 is connected to the second receiving cavity 312 for delivering saline solution to the second receiving cavity 312.

[0057] Preferably, a connecting plate 36 is provided at the end of the first conveying section 31 away from the second conveying section 32; the connecting plate 36 is provided with a first connecting hole 361, a second connecting hole 362, a third connecting hole 363, and a fourth connecting hole 364; the guide wire shaft 40 is inserted into the first conveying section 31 through the first connecting hole 361; the second liquid delivery tube 22 is connected to the first receiving cavity 311 through the second connecting hole 362, so that the second liquid delivery tube 22 can deliver saline to the first receiving cavity 311; the third liquid delivery tube 23 is connected to the second receiving cavity 312 through the third connecting hole 363, so that the third liquid delivery tube 23 can deliver saline to the second receiving cavity 312; the fourth liquid delivery tube 24 is connected to the third receiving cavity 93 through the fourth connecting hole 364, so that the fourth liquid delivery tube 24 can deliver saline to the third receiving cavity 93.

[0058] Furthermore, the delivery structure 20 also includes a fourth liquid delivery tube 24; the fourth liquid delivery tube 24 is connected to the third receiving cavity 93 and is used to deliver saline solution to the third receiving cavity 93; it should be noted that during the process of removing the valve prosthesis from the delivery device 100: firstly, saline solution is delivered to the first receiving cavity 311 through the second liquid delivery tube 22, and the first movable member 33 moves to the left under the action of the saline solution, that is, at this time the first delivery part 31 moves to the left. At the same time, since the first delivery part 31 is connected to the second delivery part 32, the second delivery part 32 will move to the left together with the first delivery part 31. When the second push tube 322 of the second delivery part 32 completely exposes the valve prosthesis in the third receiving cavity 93 to the outside of the second push tube 322, the valve prosthesis can be removed from the delivery device 100.

[0059] Conversely, after the valve prosthesis is installed in the delivery device 100: when saline solution is first delivered into the second receiving cavity 312 through the third liquid delivery tube 23, the second movable part 34 moves to the right under the action of the saline solution. That is, at this time, the first delivery part 31 moves to the right. At the same time, since the first delivery part 31 is connected to the second delivery part 32, the second delivery part 32 will move to the right together with the first delivery part 31 until the second push tube 322 of the second delivery part 32 moves to the right and fits against the end face of the delivery head 70, thus completing the installation of the valve prosthesis. At this time, the valve prosthesis is completely sealed in the third receiving cavity 93. Finally, after the valve prosthesis is installed inside the third receiving cavity 93, saline solution is delivered into the third receiving cavity 93 through the fourth liquid delivery tube 24, thereby achieving protection of the valve prosthesis.

[0060] Furthermore, the guidewire shaft 40 has a guidewire shaft cavity inside, and the delivery structure 20 also includes a third liquid delivery tube 23; the third liquid delivery tube 23 is connected to the guidewire shaft cavity and is used to deliver saline to the guidewire shaft 40 cavity; after the delivery device 100 delivers the valve prosthesis to the appropriate position of the heart, saline is introduced into the guidewire shaft cavity through the third liquid delivery tube 23 to remove the air in the guidewire shaft cavity and ensure the safety of the operation.

[0061] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A delivery device for a heart valve prosthesis, characterized in that, The delivery device (100) of the heart valve prosthesis comprises: a housing (10) provided with a mounting space (11) inside; a guide wire shaft (40) mounted in the mounting space (11), and one end of the guide wire shaft (40) exposed outside the housing (10); a transmission part (30) sleeved outside the guide wire shaft (40), the transmission part (30) being movable on the guide wire shaft (40), and one end of the transmission part (30) exposed outside the housing (10); a fixing structure (90) fixed to the guide wire shaft (40) and clamped between the transmission part (30) and the guide wire shaft (40), and a third accommodating cavity (93) formed between the fixing structure (90), the transmission part (30) and the guide wire shaft (40), and a valve prosthesis fixed in the third accommodating cavity (93); a locking mechanism (80) provided at one end of the housing (10) close to the fixing structure (90), sleeved outside the transmission part (30), and capable of rotating relative to the housing (10), the locking mechanism (80) being used for limiting the movement of the transmission part (30) on the guide wire shaft (40); wherein, by adjusting the locking mechanism (80), the transmission part (30) can move on the guide wire shaft (40) to expose the valve prosthesis outside the transmission part (30).

2. The delivery device of a heart valve prosthesis according to claim 1, characterized in that The transmission part (30) comprises: a first transmission part (31) provided in the mounting space (11); a second transmission part (32) having a first end (316) located in the mounting space (11) and connected to the first transmission part (31), and a second end (317) exposed outside the housing (10), and the fixing structure being clamped between the second end (317) and the guide wire shaft (40).

3. The delivery device of a heart valve prosthesis according to claim 2, characterized in that The second transmission part (32) is provided with a first accommodating groove (313) at a position close to the first transmission part (31), and the locking mechanism (80) comprises: a first locking piece (81) sleeved outside the second transmission part (32) and connected to one side of the housing (10) close to the fixing structure, and the first locking piece (81) being capable of rotating relative to the housing (10) and the second transmission part (32); a second locking piece (82) clamped between the first locking piece (81) and the housing (10), and the second locking piece (82) being provided with a first clamping block (821) clamped with the first accommodating groove (313). Wherein, by rotating the first locking member (81), the first locking member (81) can drive the second locking member (82) to move, so that the first clamping block (821) is clamped with the first accommodating groove (313) or separated.

4. The delivery device of a heart valve prosthesis according to claim 3, characterized in that The first locking member (81) is provided with a third clamping groove (811) and a fourth clamping groove (812), and the second locking member (82) is provided with a second clamping block (822) and a third clamping block (823). Wherein, when the first locking member (81) rotates, the second clamping block (822) can move in the third clamping groove (811), and the third clamping block (823) can move in the fourth clamping groove (812).

5. The delivery device of a heart valve prosthesis according to claim 4, characterized in that The first clamping groove (3112) is provided with a first side wall (8121), a second side wall (8122), a first side (814) and a second side (815). Wherein, the second side wall (8122) at the first side (814) and the outer edge (813) of the first locking member (81) form a first distance H1, and the second side wall (8122) at the second side (815) and the outer edge (813) of the first locking member (81) form a second distance H2, and the first distance H1 and the second distance H2 satisfy: H1>H2.

6. The delivery device of a heart valve prosthesis according to claim 5, characterized in that When the first locking member (81) rotates, the second clamping block (822) can move in the third clamping groove (811) from the first side (814) to the second side (815), or the second clamping block (822) can move in the third clamping groove (811) from the second side (815) to the first side (814). Wherein, when the second clamping block (822) moves from the first side (814) to the second side (815), the first clamping block (821) is clamped with the first accommodating groove (313); when the second clamping block (822) moves from the second side (815) to the first side (814), the first clamping block (821) is separated from the first accommodating groove (313).

7. The delivery device of a heart valve prosthesis according to any one of claims 2 to 6, characterized in that The first transmission part (31) is provided with a first movable part (33) and a second movable part (34) at both ends, and a first fixed part (35) is arranged inside the first transmission part (31). Wherein, the first movable part (33) and the first fixed part (35) form a first accommodating cavity (321), and the second movable part (34) and the first fixed part (35) form a second accommodating cavity (322); when the first transmission part (31) moves relative to the guide wire shaft (40) in a first direction, the volume of the first accommodating cavity (321) increases, and the volume of the second accommodating cavity (322) decreases; when the first transmission part (31) moves relative to the guide wire shaft (40) in a second direction, the volume of the first accommodating cavity (321) decreases, and the volume of the second accommodating cavity (322) increases.

8. The delivery device of a heart valve prosthesis according to claim 7, characterized in that The delivery device (100) further comprises: A conveying structure (20) is arranged in the mounting space (11), connected to the first conveying part (31), and located at an end of the first conveying part (31) away from the second conveying part (32), and is used to drive the first conveying part (31) and the second conveying part (32) to move.

9. The delivery device of a heart valve prosthesis according to claim 8, characterized in that The conveying structure (20) comprises: A first liquid conveying pipe (21) is communicated to the first containing cavity (321) and used to convey normal saline to the first containing cavity (321); A second liquid conveying pipe (22) is communicated to the second containing cavity (322) and used to convey normal saline to the second containing cavity (322).

10. The delivery device of a heart valve prosthesis according to claim 9, characterized in that The guide wire shaft (40) is internally provided with a guide wire shaft cavity, and the conveying structure (20) further comprises: A third liquid conveying pipe (23) is communicated to the guide wire shaft (40) cavity and used to convey normal saline to the guide wire shaft cavity; A fourth liquid conveying pipe (24) is communicated to the third containing cavity (93) and used to convey normal saline to the third containing cavity (93).

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