A delivery device for a precision released prosthetic heart valve

Abstract

This invention provides a delivery device for precisely releasing an artificial heart valve in the field of medical device technology. It includes a delivery section, a sheath, and a loading chamber. One end of the delivery section is connected to the sheath, and the other end of the sheath is connected to the loading chamber. A retaining tube is installed inside the sheath, and an inner core tube is installed inside the retaining tube. A rotating rod is installed at the tail end of the delivery section. The inner core tube passes through the rotating rod, the delivery section, and the sheath in sequence, with one end of the inner core tube exiting the sheath and connecting to the loading chamber. A knob is installed on the delivery section. Rotating the knob rotates the rotating rod, which in turn rotates the inner core tube, causing the loading chamber to open. Through the above operation, this invention allows the sheath to promptly release the artificial heart valve in a compressed state at the expected appropriate distance according to usage requirements. That is, the artificial heart valve stent can be accurately released and positioned at the expected location on the original valve, ensuring the smooth progress of valve replacement surgery and avoiding valve replacement surgery failure.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a delivery device for precisely releasing an artificial heart valve. Background Technology

[0002] In valve replacement surgery, the delivery device pushes and releases the compressed artificial heart valve through a sheath. However, due to the limitations of its material, the multiple layers of sheath generate frictional resistance during the pushing process, causing accumulation at the front of the sheath. This prevents the sheath from pushing the compressed artificial heart valve to the expected appropriate distance in time as required by the operation.

[0003] As the sheath accumulates to a certain amount, the artificial heart valve may suddenly pop out and release under compression. This makes it impossible to precisely control the timing of the release under compression, causing the artificial heart valve to fail to release at the appropriate distance from the original valve. In other words, the artificial heart valve stent cannot be accurately released and positioned at the expected location on the original valve. This can affect the smooth progress of valve replacement surgery, and in severe cases, even cause valve replacement surgery failure, endangering the patient's life. Utility Model Content

[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a delivery device for precisely releasing artificial heart valves.

[0005] According to the present invention, a delivery device for precisely releasing an artificial heart valve includes a delivery section, a sheath, and a loading chamber. One end of the delivery section is connected to the sheath, and one end of the sheath is connected to the loading chamber. A retaining tube is provided inside the sheath, and an inner core tube is provided inside the retaining tube.

[0006] A rotating rod is provided at the tail end of the conveying section. The inner core tube passes through the rotating rod, the conveying section and the sheath in sequence, and one end of the inner core tube extends out of the sheath and is connected to the loading chamber.

[0007] A knob is provided on the delivery section. Rotating the knob drives the rotating rod to rotate, which in turn drives the inner core tube to rotate. The rotation of the inner core tube causes the loading chamber to open, so that the artificial heart valve in the compressed state inside the loading chamber is released and positioned at the expected location of the original valve.

[0008] In some embodiments, the conveying section includes a first section, a second section, and a third section, wherein the first section includes a conical head, a through pipe, and a push pipe.

[0009] The first section of the tube includes tube one and tube two. One end of tube one is connected to the tail end of the conical head, and one end of tube two is inserted into the other end of tube one. One end of push tube one is inserted into the other end of tube two, and a conical knob is provided on the conical head.

[0010] Furthermore, a fixing ring is provided at one end of the second conduit, and a plug rod is provided on the fixing ring. The first section is fixed to the conveyor bracket by the plug rod.

[0011] Furthermore, a push wheel is provided at the other end of the second tube. By rotating the push wheel in the forward or reverse direction, the first push tube is in an extended or retracted state. The extension or retraction of the first push tube causes the sheath to be in an extended or retracted state.

[0012] In some embodiments, the second segment includes a gripping ring, a through tube, a knob, and a push tube.

[0013] The second section of the passage includes passage three and passage four, and one end of the gripping ring is connected to the other end of the push tube one, the other end of the gripping ring one is connected to one end of passage three, the other end of passage three is connected to one end of the knob one, the other end of the knob one is connected to one end of passage four, and one end of the push tube two is inserted into and connected to the other end of passage four.

[0014] Furthermore, a fixing ring 2 is provided on one end of the four-way pipe, and a plug 2 is provided on the fixing ring 2. The second section is fixed to the conveyor bracket by the plug 2.

[0015] Furthermore, a second push wheel is provided at the other end of the fourth tube. By rotating the second push wheel in the forward or reverse direction, the second push tube is in an extended or retracted state, and the extension or retraction of the second push tube causes the sheath to be in an extended or retracted state.

[0016] In some embodiments, the third segment includes a gripping ring two, a knob two, a through tube five, a knob three, and a Luer connector;

[0017] One end of the gripping ring 2 is connected to the other end of the push tube 2, the other end of the gripping ring 2 is connected to one end of the knob 2, the other end of the knob 2 is connected to one end of the through tube 5, the other end of the through tube 5 is connected to one end of the knob 3, one end of the Luer connector is inserted and connected to the other end of the knob 3, the other end of the Luer connector is inserted into the inner core tube, and the transfer rod passes through the inner core tube, and the inner wall of the rotating rod is tightly connected to the outer wall of the inner core tube;

[0018] Furthermore, the knob three is equipped with a gear and the rotating rod, the rotating rod passes through the through hole one on the gear, and the transfer rod passes through the inner core tube, and the inner wall of the rotating rod is fastened to the outer wall of the inner core tube;

[0019] By rotating the knob, the gear is driven to rotate, which in turn drives the rotating rod to rotate, which in turn drives the inner core tube to rotate, and the rotation of the inner core tube causes the loading compartment to unfold.

[0020] In some embodiments, a limiting platform is provided at the other end of the knob three, a limiting rod is provided inside the limiting platform, and the two ends of the limiting rod protrude from the limiting platform;

[0021] Furthermore, a semi-circular groove is provided at the center of the limiting rod, and protruding posts are provided on both sides of the semi-circular groove. The protruding posts are provided on the end face of the limiting rod, and a fixing plate is provided at one end of the limiting rod. A through hole two is provided at the center of the fixing plate.

[0022] Furthermore, a through hole three is provided at the center of the limiting platform, and one end of the Luer connector passes through the through hole three and simultaneously through the semi-circular groove and the through hole two.

[0023] In some embodiments, multiple grooves are provided on both sides of the through hole, and the multiple grooves are provided on the cross-section of the limiting platform, and the protrusions on both sides of the limiting rod are correspondingly embedded in the grooves;

[0024] By switching the position of the protrusion embedded in the groove, the Luer joint can be controlled to move forward or stop in the axial direction.

[0025] In some embodiments, the sheath includes a first sheath, a second sheath, and a third sheath, wherein the first sheath contains the second sheath, and the second sheath contains the third sheath.

[0026] Furthermore, a retaining tube is provided inside the third sheath tube. One end of the inner core tube enters from one end of the Luer joint, passes sequentially through the rotating rod, the conveying section, the third sheath tube, the second sheath tube, the first sheath tube, and the retaining tube, and is connected to the loading chamber.

[0027] In some embodiments, the loading compartment includes a front section and a rear section, with one end of the front section and one end of the rear section fitted together.

[0028] In some embodiments, a fixing platform is provided inside the hollow structure formed by the front section and the rear section, and a guide head is provided at the other end of the front section, with a connecting platform provided at the bottom of the guide head;

[0029] Furthermore, the top end of the inner core tube adopts a screw structure, and the top end of the inner core tube passes through the fixing platform and is threadedly connected to the connecting platform.

[0030] In some embodiments, a through hole four is provided on the top of the guide head, the through hole four being used for the guide wire to pass through the tail end of the inner core tube and exit through the through hole four.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] This utility model is provided with a conveying section, a sheath tube and a loading chamber, with one end of the conveying section connected to the sheath tube and the other end of the sheath tube connected to the loading chamber, and a holding tube provided inside the sheath tube and an inner core tube provided inside the holding tube.

[0033] A knob three is installed on the conveying section, and a gear is installed inside the knob three. A rotating rod passes through the gear, and one end of the inner core tube passes through the rotating rod, the conveying section and the sheath in sequence and is threaded to the connecting platform of the loading compartment.

[0034] When the knob is turned clockwise, the gear rotates, which in turn rotates the rotating rod. The rotating rod then rotates the inner core tube, which in turn opens the loading chamber. This allows for precise control of the timing of the release of the artificial heart valve under compression, ensuring that the artificial heart valve under compression is released from the loading chamber and positioned at the expected location of the original valve. This avoids the problem of accumulation between the layers of the traditional tube in the front section of the sheath, and solves the technical defects of existing delivery devices in releasing artificial heart valves under compression, such as untimely release and sudden release.

[0035] The above operations enable the sheath to be pushed and compressed at the appropriate distance as needed to release the artificial heart valve. This means that the artificial heart valve stent can be accurately released and positioned at the expected location on the original valve, ensuring the smooth progress of the valve replacement surgery and avoiding its failure. Attached Figure Description

[0036] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0037] Figure 1 This is an isometric structural diagram of a delivery device for precisely releasing an artificial heart valve according to the present invention.

[0038] Figure 2 This is a schematic diagram of the main view structure of a delivery device for precisely releasing an artificial heart valve according to the present invention.

[0039] Figure 3 This is a side view structural diagram of a delivery device for precisely releasing an artificial heart valve according to the present invention.

[0040] Figure 4 This is a top view structural diagram of a delivery device for precisely releasing an artificial heart valve according to the present invention;

[0041] Figure 5This is a partially enlarged schematic diagram of the first section of a delivery device for precisely releasing an artificial heart valve according to the present invention.

[0042] Figure 6 This is a partially enlarged schematic diagram of the second section of a delivery device for precisely releasing an artificial heart valve according to the present invention;

[0043] Figure 7 This is a partially enlarged schematic diagram of the third section of a delivery device for precisely releasing an artificial heart valve according to this utility model;

[0044] Figure 8 This is a cross-sectional schematic diagram of the first segment of a delivery device for precisely releasing an artificial heart valve according to the present invention.

[0045] Figure 9 This is a cross-sectional schematic diagram of the second segment of a delivery device for precisely releasing an artificial heart valve according to the present invention.

[0046] Figure 10 This is a cross-sectional schematic diagram of the third segment of a delivery device for precisely releasing an artificial heart valve according to the present invention;

[0047] Figure 11 This is a schematic diagram of the five-tube, three-knob, and internal structure of the delivery device for precisely releasing an artificial heart valve according to this utility model.

[0048] Figure 12 This is an enlarged schematic diagram of the knob three and the limiting platform inside the delivery device for precisely releasing an artificial heart valve according to this utility model;

[0049] Figure 13 This is a further enlarged schematic diagram of the interior of the limiting platform of the delivery device for precisely releasing an artificial heart valve according to this utility model;

[0050] Figure 14 This is an enlarged view of the knob and limiting platform inside the isometric view of the delivery device for precisely releasing an artificial heart valve according to this utility model. Figure 1 ;

[0051] Figure 15 This is an enlarged view of the knob and limiting platform inside the isometric view of the delivery device for precisely releasing an artificial heart valve according to this utility model. Figure 2 ;

[0052] Figure 16 This is a schematic diagram of the sheath and loading chamber structure of a delivery device for precisely releasing an artificial heart valve according to this utility model;

[0053] Figure 17 This is a partially enlarged schematic diagram of the sheath of a delivery device for precisely releasing an artificial heart valve according to this utility model;

[0054] Figure 18This is a partially enlarged schematic diagram of the sheath of a delivery device for precisely releasing an artificial heart valve according to this utility model;

[0055] Figure 19 This is a magnified schematic diagram of three parts of the sheath of a delivery device for precisely releasing an artificial heart valve according to this utility model;

[0056] Figure 20 This is a partially enlarged schematic diagram of the loading chamber of a delivery device for precisely releasing an artificial heart valve according to this utility model;

[0057] Figure 21 This is a partially enlarged schematic diagram of the holding tube of a delivery device for precisely releasing an artificial heart valve according to this utility model;

[0058] Figure 22 This is a schematic diagram of the internal structure of the loading chamber of a delivery device for precisely releasing an artificial heart valve according to this utility model.

[0059] Figure 23 This is a schematic diagram of the threaded structure at the top end of the inner core tube of the delivery device for precisely releasing an artificial heart valve according to this utility model.

[0060] Figure 24 This is a schematic diagram of the guide head of a delivery device for precisely releasing an artificial heart valve according to this utility model, in the isometric direction.

[0061] Figure label:

[0062] Conveying section 1, rotating rod 1342

[0063] First segment 11 Limiting platform 1343

[0064] Conical head 111, limiting rod 13431

[0065] Conical knob 1111 Semicircular groove 134311

[0066] Pipe 112, Protrusion 134312

[0067] Pipe 2 113 Fixing plate 13432

[0068] Push tube 114, through hole 2 134321

[0069] Fixing ring 115, through hole 3 13433

[0070] Insert rod 1151, groove 13434

[0071] Propulsion wheel 116, limit platform section 13435

[0072] Section 2, 12 Ruhr Joint 135

[0073] Grip ring 121 Sheath 2

[0074] Tube 3 122 Sheath 1 21

[0075] Knob 1 1 2 3 Sheath 2 2 2

[0076] Tube 4 124 Sheath 3 23

[0077] Push tube 2 125 Hold tube 3

[0078] Fixed ring 2 126 Inner core tube 4

[0079] Insert rod 2 1261 Screw structure 41

[0080] Propulsion wheel 2 127 Loading compartment 5

[0081] Third paragraph 13, first paragraph 51

[0082] Grip ring 2131, guide head 511

[0083] Knob 2 132 Connector 5111

[0084] Through-hole 5133, Through-hole 45112

[0085] Knob 3 134 Rear section 52

[0086] Gear 1341 Hollow Structure 53

[0087] Through hole 13411 Fixed table 531 Detailed Implementation

[0088] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0089] Example 1

[0090] like Figure 1-24As shown, this utility model discloses a delivery device for precisely releasing an artificial heart valve, comprising a delivery section 1, a sheath 2, and a loading chamber 5. One end of the delivery section 1 is connected to the sheath 2, and the other end of the sheath 2 is connected to the loading chamber 5. A retaining tube 3 is disposed inside the sheath 2, and an inner core tube 4 is disposed inside the retaining tube 3. A rotating rod 1342 is disposed at the tail end of the delivery section 1. The inner core tube 4 passes through the rotating rod 1342, the delivery section 1, and the sheath 2 in sequence, with one end of the inner core tube 4 extending out of the sheath 2 and connected to the loading chamber 5. A knob is disposed on the delivery section 1. Rotating the knob drives the rotating rod 1342 to rotate, which in turn drives the inner core tube 4 to rotate. The rotation of the inner core tube 4 causes the loading chamber 5 to open, allowing the artificial heart valve, which is under compression, to be released from the loading chamber 5 and positioned at the expected location of the original valve.

[0091] Conveying section 1 includes a first section 11, a second section 12, and a third section 13. The first section 11 includes a conical head 111, a through pipe, and a pusher pipe 114. The through pipe on the first section 11 includes a first through pipe 112 and a second through pipe 113. One end of the first through pipe 112 is connected to the tail end of the conical head 111, and one end of the second through pipe 113 is inserted into the other end of the first through pipe 112. One end of the pusher pipe 114 is inserted into the other end of the second through pipe 113. A conical knob 1111 is provided on the conical head 111. A fixing ring 115 is also provided on one end of the second through pipe 113. An insertion rod 1151 is provided on the fixing ring 115. The first section 11 is fixed to the conveyor bracket by the insertion rod 1151. The other end of the second tube 113 is also equipped with a push wheel 116. By rotating the push wheel 116 in the forward or reverse direction, the push tube 114 is in an extended or retracted state. The extension or retraction of the push tube 114 causes the sheath tube 2 to be in an extended or retracted state.

[0092] The second segment 12 includes a gripping ring 121, a through tube, a knob 123, and a push tube 125. The through tubes on the second segment 12 include a third through tube 122 and a fourth through tube 124. One end of the gripping ring 121 is connected to the other end of the push tube 114, the other end of the gripping ring 121 is connected to one end of the third through tube 122, the other end of the third through tube 122 is connected to one end of the knob 123, the other end of the knob 123 is connected to one end of the fourth through tube 124, and one end of the push tube 125 is inserted into the other end of the fourth through tube 124. A fixing ring 126 is also provided on one end of the fourth through tube 124, and a insertion rod 1261 is provided on the fixing ring 126. The second segment 12 is fixed to the conveyor bracket by the insertion rod 1261. The other end of the four-way tube 124 is also provided with a push wheel 127. By rotating the push wheel 127 in the forward or reverse direction, the push tube 125 is in an extended or retracted state, and the extension or retraction of the push tube 125 causes the sheath tube 2 to be in an extended or retracted state.

[0093] The third section 13 includes a gripping ring 2 131, a knob 2 132, a through tube 5 133, a knob 3 134, and a Luer connector 135. One end of the gripping ring 2 131 is connected to the other end of the push tube 2 125, and the other end of the gripping ring 2 131 is connected to one end of the knob 2 132. The other end of the knob 2 132 is connected to one end of the through tube 5 133, and the other end of the through tube 5 133 is connected to one end of the knob 3 134. One end of the Luer connector 135 is inserted into and connected to the other end of the knob 3 134, and the other end of the Luer connector 135 is inserted into the inner core tube 4. A gear 1341 and a rotating rod 1342 are installed inside the knob 3 1344, and the rotating rod 1342 is installed through the through hole 13411 on the gear 1341. Rotating knob 134 drives gear 1341 to rotate, gear 1341 rotates, rotating rod 1342 rotates, rotating rod 1342 rotates, rotating inner core tube 4 rotates, and inner core tube 4 rotates, causing loading compartment 5 to unfold.

[0094] A limiting platform 1343 is provided at the other end of knob 3 134. A limiting rod 13431 is provided inside the limiting platform 1343, with both ends of the limiting rod 13431 protruding from the limiting platform 1343. A semi-circular groove 134311 is provided at the center of the limiting rod 13431, and protruding posts 134312 are provided on both sides of the semi-circular groove 134311. The protruding posts 134312 are provided on the end face of the limiting rod 13431, and a fixing plate 13432 is provided at one end of the limiting rod 13431. A through hole 2 134321 is provided at the center of the fixing plate 13432. A through hole 3 13433 is also provided at the center of the limiting platform 1343. One end of the Luer connector 135 passes through the through hole 3 13433 and simultaneously passes through the semi-circular groove 134311 and the through hole 2 134321. Multiple grooves 13434 are provided on both sides of the through hole 13433. The multiple grooves 13434 are set on the section 13435 of the limiting platform, and the protrusions 134312 on both sides of the limiting rod 13431 are correspondingly embedded in the grooves 13434. By switching the position of the protrusions 134312 embedded in the grooves 13434, the axial movement or stop of the Luer joint 135 can be controlled.

[0095] Sheath 2 includes sheath 1 21, sheath 2 22, and sheath 3 23. Sheath 2 22 is installed inside sheath 1 21, and sheath 3 23 is installed inside sheath 2 22. A retaining tube 3 is installed inside sheath 3 23. One end of the inner core tube 4 is inserted from one end of the Luer joint 135, and passes sequentially through the rotating rod 1342, the conveying section 1, sheath 3 23, sheath 2 22, sheath 1 21, and retaining tube 3, and is connected to the loading chamber 5.

[0096] The loading compartment 5 includes a front section 51 and a rear section 52, with one end of the front section 51 and one end of the rear section 52 fitted together. A fixed platform 531 is installed within the hollow structure 53 formed by the fitted front section 51 and the rear section 52, and a guide head 511 is installed at the other end of the front section 51. A connecting platform 5111 is installed at the bottom of the guide head 511. The top end of the inner core tube 4 uses a screw structure 41, passing through the fixed platform 531 and threadedly connected to the connecting platform 5111. A through hole 5112 is provided on the top end of the guide head 511, for a guide wire to enter from the tail end of the inner core tube 4 and exit through the through hole 5112.

[0097] Specifically, in this embodiment, such as Figure 7 and Figure 20 As shown, rotating knob 3134 clockwise controls the separation of the front section 51 and the rear section 52 of the loading chamber 5, that is, the hollow structure 53 composed of the front section 51 and the rear section 52 separates, allowing the artificial heart valve under compression within the hollow structure to be released. Rotating knob 3134 counterclockwise controls the re-connection and closure of the front section 51 and the rear section 52 of the loading chamber 5.

[0098] Specifically, in this embodiment, such as Figure 7 and Figure 19 As shown, rotating knob 132 clockwise controls the axial forward and backward movement of sheath tube 23, that is, the extension or shortening of sheath tube 23. Because one end of sheath tube 23 is connected to the loading compartment 5, when sheath tube 23 moves axially forward and backward, it also drives the loading compartment 5 to move axially forward and backward, that is, the loading compartment 5 also moves forward or backward at the same time.

[0099] Specifically, in this embodiment, such as Figure 7 , Figure 19 , Figure 21 as well as Figure 22 As shown, the radial bending angles of the sheath tube 23, the retaining tube 3, and the inner core tube 4 can be adjusted by gripping the gripping ring 2 131.

[0100] Specifically, in this embodiment, such as Figure 6 , Figure 19 , Figure 21 as well as Figure 22 As shown, rotating the knob 132 clockwise causes the sheath tube 23, the retaining tube 3, and the inner core tube 4 to move axially back and forth, that is, the sheath tube 23, the retaining tube 3, and the inner core tube 4 to extend or shorten.

[0101] Specifically, in this embodiment, such as Figure 6 and Figure 18 As shown, the radial bending angle of the sheath tube 22 can be adjusted by rotating knob 123 clockwise.

[0102] Specifically, in this embodiment, such as Figure 6 As shown, the entire conveyor section 1 can be easily gripped by holding the gripping ring 121.

[0103] Specifically, in this embodiment, such as Figure 5 and Figure 18 As shown, rotating the drive wheel 116 clockwise causes the sheath tube 22 to move axially back and forth, that is, the sheath tube 22 extends or shortens.

[0104] Specifically, in this embodiment, such as Figure 5 and Figure 17 As shown, the radial bending angle of the sheath tube 21 can be adjusted by rotating the conical knob 1111 clockwise.

[0105] Specifically, in this embodiment, such as Figure 1 As shown, the conveying section 1 is made of ABS material, the sheath 2 is made of PEBAX material, and the loading chamber 5 is made of PMMA material.

[0106] Specifically, in this embodiment, such as Figure 17 , Figure 18 as well as Figure 19 As shown, in this utility model, sheath tube 1 21 is made of 22F, sheath tube 22 is made of 16F, and sheath tube 3 23 is made of 10F, and 1F is equal to 0.33mm.

[0107] Specifically, in this embodiment, such as Figure 11 As shown, in this utility model, the rotating rod 1342 passes through the inner core tube 4, and the inner wall of the rotating rod 1342 and the outer wall of the inner core tube 4 are fastened together by using glue.

[0108] Specifically, in this embodiment, such as Figure 23 As shown, in this utility model, the head end of the inner core tube 4 that passes through the fixed platform 531 and is connected to the connecting platform 5111 adopts a threaded structure, that is, the head end of the inner core tube 4 passes through the fixed platform 531 and is threadedly connected to the connecting platform 5111.

[0109] Specifically, in this embodiment, such as Figure 13 As shown, when the protrusion 134312 is inserted into the upper groove 13434, the Luer connector 135 can be pushed forward in the axial direction. When the protrusion 134312 is inserted into the lower groove 13434, the Luer connector 135 is stuck in the axial direction.

[0110] Working principle:

[0111] In this utility model, the rotating rod 1342 is inserted into the through hole 13411 on the gear 1341 of the knob 3 134. By rotating the knob 3 134, the knob 3 134 rotates and drives the rotating rod 1342 to rotate.

[0112] One end of the inner core tube 4 passes through the rotating rod 1342 and through the conveying section 1 and the sheath tube 2 until it is threadedly connected to the connecting platform 5111 inside the loading chamber 5. When the rotating rod 1342 rotates, it drives the inner core tube 4 to rotate synchronously.

[0113] When the knob 3134 is turned clockwise, the inner core tube 4 rotates synchronously, causing the hollow structure 53 to open. The front section 51 and the rear section 52 of the loading chamber 5 are separated, allowing the artificial heart valve to be released from the compressed state inside the hollow structure 53.

[0114] Once the artificial heart valve is fully released and fixed in the intended position of the original valve, turn knob 3134 counterclockwise. The inner core tube 4 rotates and simultaneously drives the hollow structure 53 to close. The front section 51 and the rear section 52 of the loading chamber 5 close, and then the delivery section 1 is pulled outward, allowing the loading chamber 5 to be removed from the patient's body, thus completing the artificial heart valve replacement surgery.

[0115] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0116] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A delivery device for precisely releasing an artificial heart valve, characterized in that, It includes a conveying section (1), a sheath (2) and a loading chamber (5). One end of the conveying section (1) is connected to the sheath (2), and one end of the sheath (2) is connected to the loading chamber (5). A retaining tube (3) is provided inside the sheath (2), and an inner core tube (4) is provided inside the retaining tube (3). A rotating rod (1342) is provided inside the tail end of the conveying section (1). The inner core tube (4) passes through the rotating rod (1342), the conveying section (1), and the sheath tube (2) in sequence. One end of the inner core tube (4) passes through the sheath tube (2) and is connected to the loading chamber (5). A knob is provided on the delivery section (1). By rotating the knob, the rotating rod (1342) is rotated. The rotation of the rotating rod (1342) causes the inner core tube (4) to rotate. The rotation of the inner core tube (4) causes the loading chamber (5) to be in an open state, so that the artificial heart valve in the compressed state in the loading chamber (5) is released and positioned at the expected position of the original valve.

2. The delivery device for precisely releasing an artificial heart valve according to claim 1, characterized in that, The conveying section (1) includes a first section (11), a second section (12) and a third section (13). The first section (11) includes a conical head (111), a through pipe and a push pipe (114). The first segment (11) includes a first tube (112) and a second tube (113). One end of the first tube (112) is connected to the tail end of the conical head (111). One end of the second tube (113) is inserted into the other end of the first tube (112). One end of the first push tube (114) is inserted into the other end of the second tube (113). A conical knob (1111) is provided on the conical head (111). Furthermore, a fixing ring (115) is provided on one end of the second tube (113), and a plug rod (1151) is provided on the fixing ring (115). The first section (11) is fixed to the conveyor bracket by the plug rod (1151). Furthermore, a push wheel (116) is provided on the other end of the second tube (113). By rotating the push wheel (116) in the forward or reverse direction, the push tube (114) is in an extended or retracted state. The extension or retraction of the push tube (114) causes the sheath (2) to be in an extended or retracted state.

3. The delivery device for precisely releasing an artificial heart valve according to claim 2, characterized in that, The second segment (12) includes a gripping ring (121), a through tube, a knob (123), and a push tube (125); The passage tube in the second section (12) includes passage tube three (122) and passage tube four (124), and one end of the gripping ring one (121) is connected to the other end of the push tube one (114), the other end of the gripping ring one (121) is connected to one end of passage tube three (122), the other end of passage tube three (122) is connected to one end of the knob one (123), the other end of the knob one (123) is connected to one end of passage tube four (124), and one end of the push tube two (125) is inserted into the other end of passage tube four (124); Furthermore, a fixing ring two (126) is provided on one end of the four-way pipe (124), and a plug rod two (1261) is provided on the fixing ring two (126). The second section (12) is fixed on the conveyor bracket by the plug rod two (1261). Furthermore, a push wheel (127) is provided on the other end of the four-way tube (124). By rotating the push wheel (127) in the forward or reverse direction, the push tube (125) is in an extended or retracted state, and the extension or retraction of the push tube (125) causes the sheath (2) to be in an extended or retracted state.

4. The delivery device for precisely releasing an artificial heart valve according to claim 3, characterized in that, The third segment (13) includes a second gripping ring (131), a second knob (132), a fifth tube (133), a third knob (134), and a Luer connector (135); One end of the gripping ring two (131) is connected to the other end of the push tube two (125), the other end of the gripping ring two (131) is connected to one end of the knob two (132), the other end of the knob two (132) is connected to one end of the through tube five (133), the other end of the through tube five (133) is connected to one end of the knob three (134), one end of the Luer connector (135) is inserted and connected to the other end of the knob three (134), and the other end of the Luer connector (135) is inserted into the inner core tube (4); Furthermore, a gear (1341) and a rotating rod (1342) are provided inside the knob three (134). The rotating rod (1342) passes through the through hole one (13411) on the gear (1341), and the inner core tube (4) passes through the transfer rod (1342). The inner wall (1342) of the rotating rod is tightly connected to the outer wall of the inner core tube (4). By rotating the knob three (134), the gear (1341) is driven to rotate. The rotation of the gear (1341) drives the rotating rod (1342) to rotate. The rotation of the rotating rod (1342) drives the inner core tube (4) to rotate. The rotation of the inner core tube (4) causes the loading compartment (5) to be in an unfolded state.

5. The delivery device for precisely releasing an artificial heart valve according to claim 4, characterized in that, A limiting platform (1343) is provided at the other end of the knob three (134), and a limiting rod (13431) is provided inside the limiting platform (1343). The two ends of the limiting rod (13431) protrude from the limiting platform (1343). Furthermore, a semi-circular groove (134311) is provided at the center of the limiting rod (134311), and protrusions (134312) are provided on both sides of the semi-circular groove (134311). The protrusions (134312) are provided on the end face of the limiting rod (13431), and a fixing plate (13432) is provided at one end of the limiting rod (13431). A through hole (134321) is provided at the center of the fixing plate (13432). Furthermore, a through hole three (13433) is provided at the center of the limiting platform (1343). One end of the Luer connector (135) passes through the through hole three (13433) and simultaneously passes through the semi-circular groove (134311) and the through hole two (134321).

6. The delivery device for precisely releasing an artificial heart valve according to claim 5, characterized in that, Multiple grooves (13434) are provided on both sides of the through hole three (13433), and the multiple grooves (13434) are provided on the limiting platform section (13435), and the protrusions (134312) on both sides of the limiting rod (13431) are correspondingly embedded in the grooves (13434); By switching the position of the protrusion (134312) embedded in the groove (13434), the Luer joint (135) can be controlled to move forward or stop in the axial direction.

7. The delivery device for precisely releasing an artificial heart valve according to claim 6, characterized in that, The sheath (2) includes a first sheath (21), a second sheath (22) and a third sheath (23), wherein the second sheath (22) is disposed inside the first sheath (21) and the third sheath (23) is disposed inside the second sheath (22); Furthermore, a retaining tube (3) is provided inside the sheath tube three (23), and one end of the inner core tube (4) is inserted from one end of the Luer joint (135), passing through the rotating rod (1342), the conveying section (1), the sheath tube three (23), the sheath tube two (22), the sheath tube one (21) and the retaining tube (3) in sequence and connected to the loading chamber (5).

8. The delivery device for precisely releasing an artificial heart valve according to claim 7, characterized in that, The loading compartment (5) includes a front section (51) and a rear section (52), with one end of the front section (51) and one end of the rear section (52) fitting together.

9. The delivery device for precisely releasing an artificial heart valve according to claim 8, characterized in that, A fixed platform (531) is provided inside the hollow structure (53) formed by the front section (51) and the rear section (52) fitting together, and a guide head (511) is provided at the other end of the front section (51), and a connecting platform (5111) is provided at the bottom of the guide head (511). Furthermore, the top end of the inner core tube (4) adopts a screw structure (41), and the top end of the inner core tube (4) passes through the fixing platform (531) and is threadedly connected to the connecting platform (5111).

10. The delivery device for precisely releasing an artificial heart valve according to claim 9, characterized in that, The guide head (511) has a through hole four (5112) at its top end. The through hole four (5112) is used for the guide wire to pass through the tail end of the inner core tube (4) and exit through the through hole four (5112).

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