A double-wing structure clamp for inhibiting mitral valve regurgitation and its delivery device

Abstract

The present invention discloses a double-wing structure clamp for suppressing mitral valve regurgitation and its delivery device, which relate to the technical field of surgical instruments. The clamp comprises a fixing seat, wherein the fixing seat is fixed with a mirror-distributed support rod through an elastic sheet, wherein the support rod is fixed with equidistant and mirror-distributed elastic rods, wherein the fixing seat is fixed with a mirror-distributed fixing plate, wherein the fixing plate is fixed with a mounting plate through an elastic sheet, and the opposite sides of the mirror-distributed mounting plate are fixed with equidistant barbs. The present invention reduces the number of times the barbs come into contact with the mitral valve during surgery by changing the position of the barbs, thereby reducing the damage caused to the mitral valve, and achieving a good fixing effect between the clamp and the mitral valve, thereby enabling the clamp to more stably suppress the regurgitation of the patient's mitral valve. At the same time, the "leafs" composed of the support rod and the adjacent elastic rods open and close following the movement of the mitral valve, playing a role similar to a one-way valve, further enhancing the effect of suppressing mitral valve regurgitation.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical instruments, and in particular to a double-wing structure clamp for inhibiting mitral valve regurgitation and a delivery device thereof. Background Art

[0002] The mitral valve clamp is a small device used to treat mitral regurgitation (mitral regurgitation is a condition in which the mitral valve in the heart cannot close completely, resulting in some blood flowing back from the left ventricle to the left atrium). It is delivered to the mitral valve of the heart through the femoral vein using a mitral valve clamp delivery device, and the clamp is controlled by a traction wire to clamp the middle part of the mitral valve to relieve mitral regurgitation. After the clamp is fixed on the mitral valve, the mitral valve clamp delivery device needs to be separated from the clamp and withdrawn from the patient. The clamp is usually composed of an elastic upper clamp arm and a lower clamp arm. When in use, the lower clamp arm is opened and placed on one side of the mitral valve, and the upper clamp arm is placed on the other side of the mitral valve. Then the upper clamp arm is released, allowing the upper clamp arm to open under its own elastic action and finally cooperate with the adjacent lower clamp arm to fix the adjacent mitral valve. In order to improve the firmness of the clamp clamping the mitral valve, barbs are set on the upper clamp arm, but After the clamp is fixed on the mitral valve, the mitral valve regurgitation situation needs to be observed by ultrasound. If the clamp fails to clamp at the most appropriate position on the mitral valve in one clamping, the position of the clamp needs to be adjusted multiple times until the regurgitation situation reaches the ideal effect before the mitral valve clamp delivery device is separated from the clamp. However, after each fixation of the clamp, the barbs on the upper clamp arm will cause damage to the mitral valve, and if the final clamping position coincides with the previous clamping position, that is, the clamp is finally fixed on the damaged part of the mitral valve, in this case, as the mitral valve dilates and contracts, the clamp is frequently subjected to the pulling force of the mitral valve, which can easily lead to tearing of the damaged part of the mitral valve, causing the clamp to slide relative to the mitral valve, resulting in the clamp's effect of suppressing the patient's mitral valve regurgitation gradually weakening, causing the patient to need to undergo surgery again to adjust the position of the clamp or increase the number of clamps, and the second surgery undoubtedly greatly increases the patient's surgical risk. Summary of the Invention

[0003] The present invention provides a double-wing structure clamp for inhibiting mitral valve regurgitation and a delivery device thereof, so as to overcome the disadvantages of the existing mitral valve clamp that causes unnecessary damage to the mitral valve during use, resulting in the gradual weakening of the clamp's inhibitory effect on mitral valve regurgitation.

[0004] The technical implementation scheme of the present invention is: a double-wing structure clamp for inhibiting mitral valve regurgitation, including a fixing seat, the fixing seat being fixed to mirror-imaged support rods through elastic sheets, the support rods being fixed to equidistant and mirror-imaged elastic rods, a film being fixed between the elastic rods and adjacent support rods, the fixing seat being hinged to mirror-imaged lower clamping arms, the lower clamping arms being hinged to hinged rods at positions near the fixing seat, the mirror-imaged hinged rods being hinged to a connecting head on the side away from the lower clamping arms, the lower clamping arms being provided with evenly distributed gripping teeth on the side away from the connecting head, a connecting piece being rotatably connected within the fixing seat, the fixing seat being fixed to mirror-imaged fixing plates, the fixing plates being fixed to an upper clamping arm on the side away from the connecting head through an elastic sheet, the upper clamping arm being made of elastic material, the fixing plates being fixed to a mounting plate on the side away from the connecting head through an elastic sheet, and the mirror-imaged mounting plates being fixed to opposite sides with evenly spaced barbs.

[0005] Furthermore, a connecting plate is fixedly connected to one side of the mounting plate away from the adjacent fixing plate, the connecting plate is made of elastic material, and the opposite sides of the mirror-image-distributed connecting plates are commonly fixedly connected to a middle plate.

[0006] Furthermore, a symmetrically distributed reinforcement plate is fixedly connected to the side of the lower clamping arm away from the connecting head, and a uniformly distributed gripping teeth is provided on the side of the reinforcement plate away from the connecting head. The upper clamping arm is composed of a U-shaped part and steps fixed thereto and equidistant therefrom. In a free state, the U-shaped part on the upper clamping arm tends to move toward the gap between the adjacent reinforcement plate and the adjacent lower clamping arm.

[0007] Furthermore, the position where the upper clamping arm is fixed to the adjacent fixing plate is located above the fixing seat, which is used to adapt to mitral valves of different specifications. The step of the upper clamping arm is close to the adjacent U-shaped part and is provided with an inclined surface on one side away from the adjacent fixing plate.

[0008] Furthermore, a locking rod is fixedly connected to one side of the connector close to the fixing seat, and the locking rod is threadedly connected to the connector.

[0009] The present invention also aims to provide a delivery device for a double-wing structure clamp, comprising an operating handle and the above-mentioned double-wing structure clamp for inhibiting mitral valve regurgitation, the operating handle being fixedly connected to an outer sleeve, the outer sleeve being fixedly connected to an inner sleeve fixed to the operating handle, the inner sleeve being slidably connected to a connecting rod, the operating handle being limitedly slidably connected to a mirror-distributed arc-shaped push block, the inner thread of the arc-shaped push block being connected to a traction wire, the operating handle being provided with a mirror-distributed guide hole near the outer sleeve, the operating handle being fixedly connected to a mounting sleeve on a side away from the outer sleeve, the mounting sleeve being fixed to a sealing cylinder fixed to the connecting rod, the sealing cylinder being rotatably connected to the outer sleeve It is connected to an operating ring, and the operating handle and the mounting sleeve are both slidably connected to the operating ring. A sealing plate is sealed, slidably and rotatably connected to the side of the sealing cylinder away from the outer sleeve. The mounting sleeve is sealed and slidably connected to the sealing plate through a connecting rod. The sealing plate cooperates with the sealing cylinder to form a power chamber, and gas is stored in the power chamber. The position near the operating ring in the sealing cylinder is sealed and limitedly slidably connected to an annularly distributed limiting column. The operating ring is provided with an annularly distributed hemispherical groove which is respectively limited and matched with the adjacent limiting columns. The operating handle is fixed with a limiting block on one side of the guide hole close to the mirror distribution, and the limiting block is limited and matched with the adjacent traction wire.

[0010] Furthermore, the mounting sleeve is rotatably connected to an adjusting shaft, and the adjusting shaft is threadedly connected to the sealing plate.

[0011] Furthermore, two groups of partitions distributed in a mirror image are fixedly connected in the outer sleeve, each group of the partitions includes the partitions distributed in a mirror image, and each group of the partitions corresponds to adjacent guide holes.

[0012] Furthermore, the operating ring is fixedly connected to a friction ring that is slidably connected to the mounting sleeve, a limit ring is slidably connected to a position near the friction ring in the mounting sleeve, an extrusion piece is slidably connected to a position near the limit ring in the mounting sleeve, the mounting sleeve is provided with a mirror-imaged limit groove, the limit groove is limitedly matched with the extrusion piece, a spring is connected between the extrusion piece and the limit ring, and the limit ring is frictionally matched with the friction ring.

[0013] Furthermore, the arc-shaped push block on one side is connected to a synchronization ring for limiting rotation, and the arc-shaped push block on the other side is provided with a synchronization groove, and the synchronization groove is limitedly matched with the synchronization ring.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: the present invention reduces the number of times the barbs come into contact with the mitral valve during surgery by changing the position of the barbs, thereby reducing damage to the mitral valve, ensuring a good combination of the barbs and the mitral valve, and ensuring a good fixation effect between the clamp and the mitral valve, thereby enabling the clamp to more stably suppress the regurgitation of the patient's mitral valve. At the same time, the "leafs" composed of the support rod and the adjacent elastic rods are fixed below the mitral valve by the clamp, so that the "leafs" composed of the support rod and the adjacent elastic rods open and close with the movement of the mitral valve, playing a role similar to a one-way valve, further enhancing the effect of suppressing mitral valve regurgitation, and reducing the probability of the patient requiring reoperation due to increased mitral valve regurgitation.

[0015] By increasing the distance between the upper clamp arm and the corresponding lower clamp arm when the clamp is opened, the applicability of the clamp is improved. At the same time, the connection plate and the middle plate cooperate to increase the contact area between the clamp and the mitral valve, thereby strengthening the firmness between the clamp and the mitral valve.

[0016] By adopting a threaded connection between the connecting piece and the locking rod, the probability of the clamp opening and falling off due to heart beating after the clamp is fixed is reduced, thereby improving the practicality of the clamp.

[0017] The clamping force of the clamp on the mitral valve is limited by air pressure to prevent the possibility of the clamp falling off due to insufficient clamping force or the appearance of a "gap" in the mitral valve due to excessive clamping force. This eliminates the need to rely entirely on the doctor's experience, thereby improving the practicality of the clamp delivery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the mitral valve clamp of the present invention when it is closed;

[0020] Figure 3 This is a three-dimensional structural diagram of the mitral valve clamp of the present invention when it is opened;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing seat, the connecting head and the connecting piece of the present invention;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the upper clamping arm, the mounting plate and the barbs of the present invention;

[0023] Figure 6 The present invention is attached Figure 4 Enlarged view of point A in the middle;

[0024] Figure 7 An exploded view of the mitral valve clamp of the present invention;

[0025] Figure 8This is a schematic diagram of the three-dimensional structure of the operating handle, arc-shaped push block and mounting sleeve of the present invention;

[0026] Figure 9 It is a schematic diagram of the three-dimensional structure of the arc-shaped push block, the sealing cylinder and the operating ring of the present invention;

[0027] Figure 10 Schematic diagram of the three-dimensional structure of the operating ring, sealing plate and limiting column of the present invention;

[0028] Figure 11 The present invention is attached Figure 8 Enlarged view of point B in the middle;

[0029] Figure 12 The present invention is attached Figure 7 Enlarged view of point C in the middle;

[0030] Figure 13 This is a sectional view of the three-dimensional structure of the outer sleeve, inner sleeve and connecting rod of the present invention;

[0031] Figure 14 It is a schematic diagram of the three-dimensional structure of the friction ring, the limit ring and the extrusion part of the present invention.

[0032] In the figure: 1-fixed seat, 101-support rod, 102-elastic rod, 2-lower clamping arm, 3-hinge rod, 4-connecting head, 5-connecting piece, 6-fixing plate, 7-upper clamping arm, 8-mounting plate, 9-barb, 10-connecting plate, 11-middle plate, 12-reinforcement plate, 13-locking rod, 14-operating handle, 15-outer sleeve, 151-partition, 16-inner sleeve, 17-connecting rod, 18-arc-shaped push block, 181-traction wire, 182-guide hole, 19-mounting sleeve, 20-sealing cylinder, 21-operating ring, 22-sealing plate, 221-power chamber, 23-limiting column, 24-limiting block, 25-adjusting shaft, 26-friction ring, 27-limiting ring, 28-extrusion piece, 281-limiting groove, 29-synchronizing ring, 291-synchronizing groove. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0034] It should be noted that during surgery, the end of the medical device close to the surgeon is the proximal end of the medical device, and the end of the medical device entering the patient's blood vessel is the distal end of the medical device, and the descriptions of the proximal end and distal end are only to help understanding.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0036] When using a mitral valve clamp, the position of the clamp needs to be adjusted multiple times. However, each time the clamp is fixed, the barbs on the upper clamp arm will damage the mitral valve, resulting in poor fixation of the clamp to the mitral valve.

[0037] Example 1: A double-wing structure clamp for inhibiting mitral regurgitation, please refer to Figure 1-Figure 5 , including a fixing base 1, the lower part of the fixing base 1 is fixed with two support rods 101 distributed in front and back mirror images through an elastic sheet (the support rods 101 are made of hard metal), the support rods 101 are fixed with a number of elastic rods 102 that are equidistant and distributed in left and right mirror images (the above elastic sheets and elastic rods 102 are nickel-titanium memory alloys), and a film is fixed between the elastic rods 102 and the adjacent support rods 101. When in the outside world, the doctor will retract the support rods 101 and the elastic rods 102 (the retracted state can be referred to the attached Figure 2 , attached Figure 2 The film is not shown in the figure). After entering the patient's heart, the elastic sheet and the elastic rod 102 recover their deformation and unfold the film to form a leaf-like shape (the specific shape can be found in the attached figure). Figure 3 ), after unfolding, the "leaf" is in a state of being higher in the middle and lower on the left and right sides. The lower part of the fixing seat 1 is hinged with two lower clamping arms 2 distributed in left and right mirror images, and the lower part of the lower clamping arms 2 is hinged with a hinge rod 3. The lower sides of the two hinge rods 3 distributed in mirror images are hinged with a connecting head 4. The upper side of the lower clamping arm 2 is provided with evenly distributed grasping teeth. The grasping teeth are used to improve the firmness of the lower clamping arm 2 to fix the mitral valve. A connecting piece 5 is rotatably connected in the fixing seat 1. The upper parts of the left and right sides of the fixing seat 1 are fixed with fixing plates 6. The upper parts of the two fixing plates 6 on the opposite sides are fixed with upper clamping arms 7 through elastic plates. The upper clamping arms 7 are made of elastic material. The upper side of the fixing plate 6 is fixed with a mounting plate 8 through an elastic plate. The opposite sides of the two mounting plates 8 distributed in mirror images are fixed with equidistant barbs 9. The barbs 9 are used to increase the fixing force of the clamp to the mitral valve.

[0038] Please refer to Figure 2-Figure 5 The opposing sides of the upper parts of the two mirror-distributed mounting plates 8 are fixed with connecting plates 10, which are made of elastic material. The opposing sides of the two mirror-distributed connecting plates 10 are commonly fixed with a middle plate 11, and a hole is provided in the middle of the middle plate 11 for the clamping conveying device to pass through. In the free state, under the action of the connecting plates 10 and the middle plate 11, the distance between the two mounting plates 8 from top to bottom gradually increases.

[0039] Please refer to Figure 2-Figure 7 The middle part of the upper side of the lower clamping arm 2 is fixed with two reinforcing plates 12 symmetrically distributed front and back, and the upper side of the reinforcing plate 12 is provided with evenly distributed gripping teeth. The upper clamping arm 7 consists of a U-shaped part and steps fixed thereto and equidistant therefrom. The U-shaped part is fixed to the adjacent elastic sheet. The uppermost step of the upper clamping arm 7 is provided with symmetrically distributed perforations for connecting the clamping conveying device. In the free state, the U-shaped part on the upper clamping arm 7 has a tendency to move toward the gap between the adjacent reinforcing plate 12 and the adjacent lower clamping arm 2. The position where the upper clamping arm 7 is fixed to the adjacent fixing plate 6 is located above the fixing seat 1, which is used to achieve the purpose of clamping mitral valves of different thicknesses. The step of the upper clamping arm 7 is close to the adjacent U-shaped part and is away from the adjacent fixing plate 6. A slope is provided on the side.

[0040] Please refer to Figure 5 A locking rod 13 is fixed to the middle part of the upper side of the connecting head 4, and the locking rod 13 is threadedly connected to the connecting piece 5, which is used to lock the relative position of the connecting head 4 and the fixing base 1, that is, to lock the distance between the two lower clamping arms 2, thereby reducing the probability of the clamp falling off due to vibration.

[0041] When performing mitral valve clamping, the doctor connects the fixing seat 1, the upper clamp arm 7 and the connecting piece 5 to the corresponding positions on the existing mitral valve clamp delivery device. Then the doctor controls the two upper clamp arms 7 to swing and finally to the folded state through the mitral valve clamp delivery device (the folded state of the clamp can be referred to in the attached figure). Figure 2 ), during the swinging of the upper clamping arm 7, the upper clamping arm 7 is attached to the adjacent mounting plate 8 and pushes the mounting plate 8 to swing to a folded state. During the swinging of the mounting plate 8, the mounting plate 8 pushes the middle plate 11 downward through the adjacent connecting plate 10, and at the same time the connecting plate 10 bends and deforms. Then the doctor controls the rotation of the connector 5 through the mitral valve clamp delivery device, and the connector 5 moves upward through the threaded transmission locking rod 13 and the connector 4. The connector 4 pushes the adjacent lower clamping arm 2 to swing through the two hinged rods 3 and is finally in a folded state.

[0042] After the lower clamp arm 2 is in the retracted state, the doctor uses the guiding device and the adjustable curved sheath to establish an interventional channel from outside the patient to inside the patient. When the end of the adjustable curved sheath is located at the mitral valve position of the patient's heart, the doctor withdraws the guiding device, and then the doctor retracts the two support rods 101 to make the support rod 101 in a vertical state. At the same time, the elastic sheet adjacent to the support rod 101 is bent, and then the doctor retracts several elastic rods 102 to reduce the angle between the elastic rod 102 and the adjacent support rod 101. After completing the retraction of the support rod 101 and the elastic rod 102, the doctor uses the mitral valve clamp delivery device to deliver the clamp through the adjustable curved sheath into the patient's body.

[0043] After the clamp is delivered to the patient's heart, the mitral valve clamp delivery device drives the clamp to extend out of the adjustable bending sheath. At this time, the support rod 101 is opened under the action of its adjacent elastic sheet, and the elastic rod 102 recovers its deformation, so that several elastic rods 102 and adjacent support rods 101 together open the membrane between them. Then, under the guidance of three-dimensional ultrasound, the doctor drives the clamp to move the "leaf" composed of the support rod 101 and the elastic rod 102 downward until the two lower clamp arms 2 pass through the middle of the two leaflets of the mitral valve (the lower clamp arms 2 are located below the mitral valve at this time) to operate the mitral valve. The clamp delivery device rotates the connecting piece 5 in the opposite direction and moves the locking rod 13 and the connecting head 4 downward through the threaded transmission. The connecting head 4 pulls the adjacent lower clamp arms 2 to swing to the open state through the two hinged rods 3. Then the clamp is pulled upward as a whole through the mitral valve clamp delivery device until the two lower clamp arms 2 respectively drag the two leaflets of the mitral valve, and at the same time, the two upper clamp arms 7 enter between the two leaflets. At this time, the doctor controls the mitral valve clamp delivery device to open the upper clamp arms 7 under the action of the adjacent elastic sheets (at the same time, the two mounting plates 8 are reset under the action of the adjacent connecting plates 10. This state can be referred to in the attached figure). Figure 3 ), so that the two leaflets of the mitral valve are respectively clamped between the adjacent upper clamping arms 7 and the adjacent lower clamping arms 2 (at this time, the mitral valve is in contact with the grasping teeth on the adjacent lower clamping arms 2 and the adjacent reinforcing plates 12, which is used to increase the firmness of the clamp in fixing the mitral valve), and then the mitral valve clamp delivery device continues to pull the clamp upward as a whole, and at the same time, the mitral valve clamp delivery device controls the rotation of the connector 5, and the connector 5 moves upward through the threaded transmission locking rod 13 and the connector 4, and the connector 4 pushes the two lower clamping arms 2 to swing through the two hinged rods 3 until they are about to reach the folded state and stop (at this time, the barbs 9 are not in contact with the adjacent leaflets).

[0044] The main cause of mitral regurgitation is the abnormal structure of the mitral valve. One of the causes of abnormal structure of the mitral valve is thickening of the mitral valve. In the existing clamps, since the swing axis of the upper clamp arm 7 coincides with the swing axis of the adjacent lower clamp arm 2, during the opening process of the upper clamp arm 7, the lower part of the upper clamp arm 7 first contacts the end of the adjacent leaflet, and then the upper clamp arm 7 stops moving. At this time, only the lower part of the upper clamp arm 7 contacts the adjacent leaflet. In this case, the clamp does not firmly clamp the mitral valve. By separating the swing axis of the upper clamp arm 7 from the swing axis of the adjacent lower clamp arm 2 and making a distance between the swing axes of the two to adapt to leaflets of different thicknesses, the specific operation is as follows: during the opening process of the upper clamp arm 7 (since the distance between the lower part of the upper clamp arm 7 and the adjacent lower clamp arm 2 is greater than the thickness of the leaflet end, the lower part of the upper clamp arm 7 does not contact the leaflet end). The ends of the leaflets contact), the upper part of the upper clamp arm 7 first contacts the adjacent leaflet, and then under the action of the adjacent elastic sheet of the upper clamp arm 7, the upper part of the upper clamp arm 7 bends and fits the surface of the adjacent leaflet (at this time, the lower part of the upper clamp arm 7 still does not contact the end of the adjacent leaflet), increasing the contact area between the upper clamp arm 7 and the adjacent leaflet, and then in the process of retracting the lower clamp arm 2, the lower clamp arm 2 drives the adjacent upper clamp arm 7 to swing through the adjacent leaflet. Since the swing axis of the lower clamp arm 2 is inconsistent with the swing axis of the adjacent upper clamp arm 7, during the swinging of the lower clamp arm 2, the upper clamp arm 7 moves upward relative to the adjacent lower clamp arm 2. At this time, the leaflet follows the adjacent lower clamp arm 2 under the action of the grasping teeth on the adjacent lower clamp arm 2 and the adjacent reinforcing plate 12, so that the upper clamp arm 7 slides along the adjacent leaflet (in this process, the inclined surface on the step of the upper clamp arm 7 guides the upper clamp arm 7 to slide along the adjacent leaflet).

[0045] When the lower clamp arm 2 swings to the point of reaching the folded state, the doctor observes the patient's mitral regurgitation through ultrasound. If the patient's mitral regurgitation is not significantly relieved, the doctor repeats the above operation in reverse, opens the lower clamp arm 2, and folds the upper clamp arm 7 through the mitral clamp delivery device, then adjusts the position of the clamp, and clamps the leaflet again until the patient's mitral regurgitation is significantly relieved. The doctor then continues to control the rotation of the connector 5 through the mitral clamp delivery device, repeats the above steps of rotating the connector 5, and swings the lower clamp arm 2 to the folded state.

[0046] When the lower clamping arm 2 swings to the retracted state, the lower clamping arm 2 squeezes the adjacent upper clamping arm 7 through the adjacent leaflet to swing, causing the adjacent elastic sheet of the upper clamping arm 7 to deform. As the lower clamping arm 2 swings, the distance between the lower clamping arm 2 and the swinging axis of the adjacent upper clamping arm 7 gradually decreases until the end of the leaflet contacts the lower part of the adjacent upper clamping arm 7, the upper part of the upper clamping arm 7 contacts the upper part of the adjacent mounting plate 8 and pushes the adjacent mounting plate 8 to swing, causing the adjacent elastic sheet of the mounting plate 8 to deform, and causing the adjacent connecting plate 10 of the mounting plate 8 to deform. The reaction force of the connecting plate 10 on the mounting plate 8 pushes the upper part of the adjacent upper clamping arm 7 to bend and deform, thereby increasing the contact area between the upper clamping arm 7 and the leaflet. While the upper part of the upper clamping arm 7 contacts the upper part of the adjacent mounting plate 8, the barb 9 at the lower part passes through the adjacent upper clamping arm 7 and contacts the leaflet. The barb 9 further improves the firmness of the fixation of the leaflet.

[0047] After the lower clamp arm 2 swings to the folded state, the fixation of the mitral valve is completed. Then the doctor releases the clamping connection between the mitral valve clamp delivery device and the fixing seat 1 and withdraws the mitral valve delivery device from the patient's body. At this point, the mitral valve clamping operation is completed, and the large hole when the patient's mitral valve is opened is divided into two small holes (at this time, the "leaf" composed of the support rod 101 and the adjacent elastic rod 102 is located directly below the adjacent small holes). At the same time, when the mitral valve is in diastole, blood impacts the "leaf" composed of the support rod 101 and the adjacent elastic rod 102 from top to bottom, causing the support rod 101 to The elastic sheets adjacent to 101 are deformed, and at the same time, the elastic rods 102 are bent relative to the adjacent support rods 101, so that the projected area of the "leafs" in the horizontal direction is reduced, which does not hinder the flow of the patient's blood. When the mitral valve contracts, the support rods 101 and the elastic rods 102 recover their deformation, and as the blood impacts the "leafs" in the opposite direction, the distance between the leaflets and the mitral valve hole is reduced, which hinders the backflow of blood. In this way, the "leafs" composed of the support rods 101 and the adjacent elastic rods 102 open and close with the movement of the mitral valve, further suppressing mitral valve regurgitation.

[0048] During mitral valve clamping, the force with which the clamp clamps the mitral valve is completely controlled by the doctor's feeling. If the clamp clamps too little, the clamp will not firmly clamp the mitral valve, and the clamp may easily fall off in the patient's future life. If the clamp clamps too much, it may easily create a "gap" in the mitral valve, causing damage to the patient's mitral valve.

[0049] Example 2: Based on Example 1, a conveying device for a double-wing structure clamp is provided. Figure 1 and Figures 8-11, including an operating handle 14, an outer sleeve 15 is fixedly connected to the left side of the operating handle 14, an inner sleeve 16 is fixedly connected to the outer sleeve 15, the inner sleeve 16 is fixed to the operating handle 14, the left end of the inner sleeve 16 protrudes from the outer sleeve 15, and a connecting rod 17 is slidably connected to the inner sleeve 16. The left end of the connecting rod 17 is roughly rectangular and is used to drive the connecting member 5 to rotate. The middle part of the operating handle 14 is slidingly connected to two arc-shaped push blocks 18 with front and rear mirror distribution. The arc-shaped push block 18 is internally threaded with a traction wire 181 (the traction wire 181 consists of a silk thread and a threaded rod, and the traction wire 181 can be seen in the attached Figure 8 ), two guide holes 182 with front and rear mirror distribution are provided on the left side of the operating handle 14, and the guide holes 182 are used to guide the movement of adjacent traction wires 181. The rear side of the operating handle 14 is fixed with a mounting sleeve 19, and a sealing cylinder 20 is fixed in the mounting sleeve 19. The left side of the sealing cylinder 20 is fixed to the connecting rod 17, and the left part of the sealing cylinder 20 is rotatably connected to the operating ring 21. The right side of the operating handle 14 and the left side of the mounting sleeve 19 are both slidably connected to the operating ring 21. The right part of the sealing cylinder 20 is sealed, slidably and rotatably connected to the sealing plate 22. The right side of the mounting sleeve 19 is sealed and slidably connected to the sealing plate 22 left and right through two connecting rods. The left side of the sealing plate 22 cooperates with the sealing cylinder 20 to form a power cavity. 221. Gas is stored in the power chamber 221. The left part of the sealing cylinder 20 is sealed and limitedly slidably connected with four limiting columns 23 distributed in an annular shape. The side of the limiting column 23 away from the central axis of the sealing cylinder 20 is hemispherical. The operating ring 21 is provided with a hemispherical groove distributed in an annular shape. The hemispherical groove of the operating ring 21 is limited and matched with the adjacent limiting column 23. The left part of the operating handle 14 is fixed with two limiting blocks 24 distributed in front and back mirror images. The limiting block 24 is provided with a semicircular groove and a horizontal groove in the semicircular groove. The height of the horizontal groove in the vertical direction is less than the diameter of the wire in the traction wire 181. The limiting block 24 is limited and matched with the adjacent traction wire 181 to fix the wire of the traction wire 181.

[0050] Please refer to Figure 10 and Figure 14 The right side of the mounting sleeve 19 is rotatably connected to an adjusting shaft 25 , which is threadedly connected to the sealing plate 22 for adjusting the volume of the power chamber 221 .

[0051] Please refer to Figure 12 and Figure 13 Two groups of partitions 151 are fixedly connected to the outer sleeve 15 in a front-to-back mirror-distributed manner. Each group of partitions 151 includes two partitions 151 in an upper-lower mirror-distributed manner, and each group of partitions 151 corresponds to an adjacent guide hole 182, which is used to guide the wire of the traction wire 181 to pass through the outer sleeve 15.

[0052] Please refer to Figure 14A friction ring 26 is fixed to the right side of the operating ring 21, and the friction ring 26 is slidably connected to the mounting sleeve 19. The left part of the mounting sleeve 19 is connected to a limit ring 27 for left and right sliding movement. The left part of the mounting sleeve 19 is connected to an extrusion piece 28 for left and right limited sliding movement. The mounting sleeve 19 is provided with two limit grooves 281 with upper and lower mirror distributions. The limit groove 281 consists of a connecting groove in the middle and six card grooves symmetrically distributed on the front and back sides, and the horizontal cross-section of the limit groove 281 is roughly in the shape of a "non" character. The card groove of the limit groove 281 is limited and matched with the extrusion piece 28. A spring is connected between the left side of the extrusion piece 28 and the limit ring 27, and the limit ring 27 is frictionally matched with the friction ring 26.

[0053] Please refer to Figure 9 The front arc-shaped push block 18 is connected to the synchronous ring 29 for limiting rotation, and the rear arc-shaped push block 18 is provided with a synchronous groove 291. The synchronous groove 291 cooperates with the synchronous ring 29 to control whether the two arc-shaped push blocks 18 move synchronously.

[0054] When performing mitral valve clamping, the doctor clamps the inner sleeve 16 with the fixing seat 1, and makes the connecting rod 17 and the connecting piece 5 limited sliding connection, then respectively passes the wire ends of the two traction wires 181 through the adjacent arc-shaped push blocks 18 and makes the threaded rod of the traction wire 181 be threadedly connected with the adjacent arc-shaped push blocks 18, and the wire of the traction wire 181 passes through the adjacent guide hole 182 and moves along the gap between the two adjacent partitions 151, and finally passes through the outer sleeve 15. At this time, the doctor passes the wire of the traction wire 181 through the perforation on the upper clamp arm 7 on the same side, and re-inserts the wire of the traction wire 181 along the original path. The wire passes through the guide hole 182 on the same side, and then the doctor stretches the silk thread of the traction wire 181 to swing the upper clamp arm 7 to the retracted state. The doctor clamps the silk thread of the traction wire 181 in the horizontal groove of the adjacent limit block 24. At this time, the assembly of the device is completed. Then the doctor rotates the adjustment shaft 25 according to the condition of the patient's mitral valve (the mitral valve of some patients will undergo hardening). The adjustment shaft 25 moves the sealing plate 22 left and right through the threaded transmission to adjust the pressure of the gas in the power chamber 221 (the pressure is proportional to the clamping force of the clamp on the mitral valve) to the appropriate pressure. At this point, the preparation work is completed.

[0055] After the preparation work is completed, the mitral valve clamping operation is started, and the clamp is delivered to the patient's heart. Then the doctor rotates the operating ring 21, and the operating ring 21 drives the sealing cylinder 20 to rotate through the four limit columns 23. The sealing cylinder 20 drives the connecting rod 17 to rotate. The connecting rod 17 is driven by the threaded matching between the connecting piece 5 and the locking rod 13 to move the connecting head 4. The connecting head 4 drives the opening or closing of the two lower clamping arms 2 on the clamp through the two hinged rods 3. When the two lower clamping arms 2 on the clamp are closed, if the clamping force of the clamp reaches the initial set force, the reaction force of the clamp on the connecting rod 17 causes the sealing cylinder 20 to stop rotating. When the doctor continues to rotate the operating ring 21, the hemispherical groove of the operating ring 21 squeezes the adjacent limiting post 23 toward the central axis of the operating ring 21, and causes the hemispherical groove of the operating ring 21 to lose contact with the adjacent limiting post 23, thereby releasing the limiting effect of the limiting post 23 on the operating ring 21. As the operating ring 21 continues to rotate, the limiting post 23 gradually corresponds to the next adjacent hemispherical groove above and below the operating ring 21, and enters the hemispherical groove under the push of the gas in the power chamber 221, thereby re-limiting the operating ring 21. At this time, the doctor notices the above situation and stops rotating the operating ring 21, thereby ensuring that the clamping force of the clamp on the mitral valve is at an appropriate level.

[0056] When performing mitral valve clamping, the arc-shaped push block 18 is pushed to the left to relax the wires of the adjacent traction wire 181. At this time, the upper clamping arm 7 on the ipsilateral mitral valve swings and opens under the action of the adjacent elastic sheet. When it is necessary to control the two upper clamping arms 7 at the same time, the doctor rotates the synchronization ring 29 on the front arc-shaped push block 18 to make the synchronization ring 29 enter the synchronization groove 291 of the rear arc-shaped push block 18. At this time, when the doctor pushes any one of the arc-shaped push blocks 18, the two arc-shaped push blocks 18 move together.

[0057] When the doctor rotates the operating ring 21, the operating ring 21 drives the friction ring 26 to rotate, and the friction ring 26 and the limit ring 27 cooperate with each other to prevent the operating ring 21 from rotating when the doctor is not in contact with the operating ring 21, thereby affecting the doctor's operation. Therefore, before the mitral valve clamping operation begins, the doctor rotates the extrusion piece 28 counterclockwise (the rotation angle in this embodiment is from right to left) to make the extrusion piece 28 lose contact with the adjacent groove on the limit groove 281. Then the doctor moves the extrusion piece 28 left and right to change the elastic force of the adjacent spring on the left side of the extrusion piece 28. When the elastic force of the adjacent spring of the extrusion piece 28 pushes the limit ring 27 to squeeze the friction ring 26, and the friction force between the limit ring 27 and the friction ring 26 is sufficient to keep the operating ring 21 stationary when the doctor is not operating, the doctor stops moving the extrusion piece 28 and rotates it clockwise to make the extrusion piece 28 enter the adjacent groove on the limit groove 281. At this time, the adjustment of the extrusion piece 28 is completed.

[0058] After the clamp is fixed in place, the doctor first removes the wire of the traction wire 181 from the horizontal groove of the adjacent limit block 24, then releases the threaded connection between the threaded rod of the traction wire 181 and the arc-shaped push block 18 on the same side, and pulls out the traction wire 181. The doctor then releases the connection between the inner sleeve 16 and the fixing seat 1 and withdraws the delivery device from the patient's body.

[0059] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-wing structure clamp for inhibiting mitral valve regurgitation, comprising a fixing seat (1), wherein the fixing seat (1) is fixedly connected to a mirror-distributed support rod (101) through an elastic sheet, wherein the support rod (101) is fixedly connected to an equidistant and mirror-distributed elastic rod (102), wherein a film is fixedly connected between the elastic rod (102) and the adjacent support rod (101), wherein the fixing seat (1) is hingedly connected to a mirror-distributed lower clamp arm (2), wherein the lower clamp arm (2) is hingedly connected to a hinge rod (3) at a position close to the fixing seat (1), wherein the mirror-distributed hinge rod (3) is hingedly connected to a connector (4) on a side away from the lower clamp arm (2), wherein the side of the lower clamp arm (2) away from the connector (4) is provided with evenly distributed gripping teeth, and wherein the clamping device is characterized in that: It also includes a connecting member (5), the connecting member (5) is rotatably connected to the fixing seat (1), the fixing seat (1) is fixed with a mirror-distributed fixing plate (6), the upper parts of the mirror-distributed fixing plates (6) on opposite sides are fixed with upper clamping arms (7) through elastic sheets, the upper clamping arms (7) are made of elastic material, the upper side of the fixing plate (6) is fixed with a mounting plate (8) through an elastic sheet, and the opposite sides of the mirror-distributed mounting plates (8) are fixed with equidistant barbs (9); A locking rod (13) is fixedly connected to one side of the connector (4) close to the fixing seat (1), and the locking rod (13) is threadedly connected to the connector (5) for locking the relative position of the connector (4) and the fixing seat (1); A connecting plate (10) is fixedly connected to the side of the mounting plate (8) away from the adjacent fixing plate (6), and the connecting plate (10) is made of elastic material. The mirror-distributed opposite sides of the connecting plates (10) are fixedly connected to a middle plate (11), and a hole is provided in the middle of the middle plate (11) for the clamping conveying device to pass through.

2. The double-wing structure clamp for suppressing mitral regurgitation according to claim 1, characterized in that: A symmetrically distributed reinforcing plate (12) is fixedly connected to the side of the lower clamping arm (2) away from the connecting head (4), and a uniformly distributed gripping tooth is provided on the side of the reinforcing plate (12) away from the connecting head (4). The upper clamping arm (7) is composed of a U-shaped member and steps fixed thereto and equidistant therefrom. In a free state, the U-shaped member on the upper clamping arm (7) has a tendency to move toward the gap between the adjacent reinforcing plate (12) and the adjacent lower clamping arm (2).

3. The double-wing structure clamp for suppressing mitral regurgitation according to claim 2, characterized in that: The position where the upper clamping arm (7) is fixed to the adjacent fixing plate (6) is located above the fixing seat (1) and is used to adapt to mitral valves of different specifications. The step of the upper clamping arm (7) is close to the adjacent U-shaped member and is provided with an inclined surface on the side away from the adjacent fixing plate (6).

4. A conveying device for a double-wing structure clamp, characterized in that: The invention comprises an operating handle (14) and a double-wing structure clamp for inhibiting mitral valve regurgitation as claimed in claim 3, wherein the operating handle (14) is fixedly connected to an outer sleeve (15), an inner sleeve (16) fixed to the operating handle (14) is fixedly connected to the outer sleeve (15), a connecting rod (17) is slidably connected to the inner sleeve (16), the operating handle (14) is limitedly slidably connected to a mirror-distributed arc-shaped push block (18), the arc-shaped push block (18) is internally threadedly connected to a traction wire (181), a mirror-distributed guide hole (182) is provided at a position of the operating handle (14) close to the outer sleeve (15), a mounting sleeve (19) is fixedly connected to a side of the operating handle (14) away from the outer sleeve (15), a sealing cylinder (20) fixed to the connecting rod (17) is fixedly connected to the mounting sleeve (19), the sealing cylinder (20) is rotatably connected to an operating ring (21), the operating The operating handle (14) and the mounting sleeve (19) are both slidably connected to the operating ring (21); a sealing plate (22) is sealed and rotatably connected to the side of the sealing cylinder (20) away from the outer sleeve (15); the mounting sleeve (19) is sealed and slidably connected to the sealing plate (22) through a connecting rod; the sealing plate (22) cooperates with the sealing cylinder (20) to form a power chamber (221); gas is stored in the power chamber (221); a position near the operating ring (21) in the sealing cylinder (20) is sealed and slidably connected to an annularly distributed limiting column (23); the operating ring (21) is provided with an annularly distributed hemispherical groove that is respectively limited and matched with the adjacent limiting columns (23); a limiting block (24) is fixedly connected to the side of the operating handle (14) near the mirror-distributed guide hole (182); the limiting block (24) is limited and matched with the adjacent traction wire (181).

5. The conveying device of the double-wing structure clamp according to claim 4, characterized in that: The mounting sleeve (19) is rotatably connected to an adjusting shaft (25), and the adjusting shaft (25) is threadedly connected to the sealing plate (22).

6. The conveying device of the double-wing structure clamp according to claim 5, characterized in that: Two groups of partition plates (151) distributed in a mirror image are fixedly connected in the outer sleeve (15), each group of the partition plates (151) includes the partition plates (151) distributed in a mirror image, and each group of the partition plates (151) corresponds to adjacent guide holes (182).

7. The conveying device of the double-wing structure clamp according to claim 6, characterized in that: The operating ring (21) is fixedly connected to a friction ring (26) that is slidably connected to the mounting sleeve (19); a position in the mounting sleeve (19) close to the friction ring (26) is slidably connected to a limit ring (27); a position in the mounting sleeve (19) close to the limit ring (27) is slidably connected to an extrusion piece (28); the mounting sleeve (19) is provided with a mirror-distributed limit groove (281); the limit groove (281) is limitedly matched with the extrusion piece (28); a spring is connected between the extrusion piece (28) and the limit ring (27); and the limit ring (27) is frictionally matched with the friction ring (26).

8. The conveying device of the double-wing structure clamp according to claim 7, characterized in that: The arc-shaped push block (18) on one side is connected to a synchronization ring (29) for limited rotation, and the arc-shaped push block (18) on the other side is provided with a synchronization groove (291), and the synchronization groove (291) is limitedly matched with the synchronization ring (29).

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