Heart valve repair system

Abstract

The present invention discloses a traction system for heart valve forming, including a stretcher body, a support frame detachably mounted on the stretcher body, a second adjustment platform detachably mounted on the support frame, a positioning cylinder mounted on the second adjustment platform, a fine-tuning mechanism movably mounted on the positioning cylinder, a pull rope mounted on the fine-tuning mechanism, a movable bead mounted on the pull rope, both ends of the pull rope extending outward through both ends of the positioning cylinder, and a pull claw mounted on one end of the pull rope, a first adjustment platform detachably mounted on the support frame on one side of the first adjustment platform, and a traction mechanism for pulling the pull rope mounted on the first adjustment platform. The present invention provides a series of structures, so that the heart valve forming traction system, during the valvuloplasty operation, takes the sternal stretcher as the basis, and uses the small volume characteristics of the rope body to avoid interference with the doctor's operation, and adjusts the rope body traction to meet the needs of surgical use.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a heart valve shaping and traction system. Background Art

[0002] During the sternal expansion surgery, the sternum is expanded with the help of a sternal expander while shielding the incised tissue to avoid affecting the doctor's field of vision during the operation. In actual operations, such as valvuloplasty, in addition to expanding the sternum, the tissue around the heart needs to be spread apart to avoid blocking the actual surgical site. The spread apart human tissue requires additional components to pull it to avoid tissue repositioning and blocking the surgical site. In this process, in addition to the sternal expander, another set of traction devices is required.

[0003] Another traction device is actually a bracket installed on the sternal spreader, and is equipped with a telescopic rod and a pulling claw. The actual position of the pulling claw is changed by means of the telescopic effect of the telescopic rod, and the pulling claw directly pulls the human tissue. However, due to the structure of the telescopic rod, the telescopic rod is large in size. In particular, when multiple human tissues need to be pulled at the same time, multiple telescopic rods are required, which seriously affects the field of vision and limits the doctor's surgical movements. For example, when the doctor is operating with a knife, he will be concerned about whether his hand will touch the telescopic rod. The more telescopic rods are used, the greater the probability of touching it. In addition, since the telescopic rod is a relatively rigid component, it has poor flexibility. In actual operation, if the pulling torque or pulling angle of the pulling claw needs to be adjusted, it is also necessary to change the installation position and telescopic length of the telescopic rod, and perform more complicated adjustment movements. Summary of the invention

[0004] The object of the present invention is to provide a traction system for heart valvuloplasty to solve the problems mentioned in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a heart valve forming traction system, comprising a spreader body, a support frame detachably mounted on the spreader body, a second adjustment platform detachably mounted on the support frame, a positioning cylinder mounted on the second adjustment platform, the interior of the positioning cylinder is conductive to both ends, and a fine-tuning mechanism is movably mounted on the positioning cylinder, a pull rope is mounted on the fine-tuning mechanism, a movable bead is mounted on the pull rope, both ends of the pull rope extend outward through both ends of the positioning cylinder, and a pull claw is mounted on one end of the pull rope, a first adjustment platform is detachably mounted on the support frame on one side of the first adjustment platform, and a traction mechanism for pulling the pull rope is mounted on the first adjustment platform.

[0006] Preferably, the first adjustment platform and the second adjustment platform are both annular components, and top screws are installed on the surfaces of the first adjustment platform and the second adjustment platform through screw holes.

[0007] Preferably, a soft pad is installed at the end of the top screw, and the soft pad is in contact with the surface of the support frame.

[0008] Preferably, the support frame is composed of two upright poles and two transverse cross bars which are combined by means of pins, and the surfaces of the upright poles and the cross bars are both provided with anti-slip grooves.

[0009] Preferably, the fine-tuning mechanism includes a screw head and a spiral barrel, the screw head is mounted on one end of the positioning barrel by means of a bearing, an oblique through hole is provided inside the screw head, the spiral barrel is mounted on one end of the screw head on the inner side of the bearing, and the spiral barrel extends to the inside of the positioning barrel.

[0010] Preferably, a U-shaped clamp is installed on the circumferential surface of the clamping cylinder via a rotating shaft, and the U-shaped clamp is clamped into the gap between the handle end of the screw head and the clamping cylinder.

[0011] Preferably, a retaining ring is installed at the other end of the pull rope.

[0012] Preferably, the traction mechanism comprises a telescopic rod and an elastic hook, the telescopic rod is mounted on the circumferential surface of the first adjustment platform, and the elastic hook is mounted on the output end of the telescopic rod.

[0013] Preferably, a connecting piece is installed on the surface of the expander body connected to the support frame, and an opening is provided on the connecting piece.

[0014] Preferably, a bottom plate is installed at the bottom end of the vertical pole, a gasket is sleeved on the surface of the vertical pole above the bottom plate, and a nut is threadedly installed on the surface of the vertical pole above the gasket.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The traction system for heart valve forming is used in combination with a pull rope and movable beads to replace the existing technology of tightening and fixing the pull claws by relying on a telescopic hard rod, thereby reducing the visual field obstruction caused during the operation and being more conducive to the operation. The characteristics of the rope make the pull claws more flexible when used. The movable beads at the end of the pull rope can be limited by a positioning ring, and the pull rope can be tightened manually with the help of the positioning ring, so that relative movement occurs between the pull rope and the movable beads, making the movable beads more compact and squeezed against each other to form a hard contact, thereby increasing the overall hardness and limiting ability of the entire pull rope, and avoiding the pull claws from moving after fixation to affect actual use.

[0017] 2. The heart valve forming traction system can connect the screw head and the positioning cylinder through the bearing, and the two can rotate relative to each other, thereby driving the spiral cylinder to rotate. The spiral cylinder can push the movable bead to move back and forth with the help of the spiral channel on it, so that the entire pull rope is supported by the positioning cylinder, and the tension of the pulling claw is adjusted to ensure that the pulling claw can tighten the human tissue incised during the valve surgery. After the pulling claw is tightened, it can be clamped into the gap between the screw head handle and the positioning cylinder through the U-shaped clamp, and the screw head can be prevented from rotating due to external force by means of extrusion and friction, thereby achieving fixed limit operation on the movable bead inside the spiral cylinder and even the entire pull rope.

[0018] 3. The heart valve forming traction system can use the top screw to make contact with the vertical pole or the horizontal pole along the screw hole when the first adjustment platform and the second adjustment platform are respectively connected with the surface of the vertical pole or the horizontal pole. When the surface of the vertical pole or the horizontal pole has anti-slip grooves, an anti-slip tightening effect is achieved, which facilitates the installation of the first adjustment platform and the second adjustment platform on the vertical pole or the horizontal pole at any angle or position to meet actual use requirements.

[0019] 4. The heart valve forming traction system has a telescopic length adjustment function through the telescopic rod, which can drive the elastic draw hook to move relative to each other. When the force angle of the draw rope is adjusted or the tension of the draw rope is adjusted significantly, the elastic draw hook can directly pull and limit the draw rope and even the movable bead to meet the adjustment requirements. Through the bottom plate, after the vertical pole is inserted into the connecting plate, the bottom plate and the connecting plate can be clamped upward, and the nuts and gaskets can be used to increase the downward limit clamping between the vertical pole and the connecting plate to meet the installation requirements of the vertical pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the spreader of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall assembly of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the first adjustment platform of the present invention;

[0023] Figure 4 It is a schematic diagram of the internal structure of the clamping tube of the present invention;

[0024] Figure 5 A schematic diagram of the support frame assembly structure of the present invention.

[0025] In the figure: 1. main body of the spreader; 2. connecting piece; 3. vertical pole; 4. horizontal pole; 5. first adjusting platform; 6. positioning cylinder; 7. pulling claw; 8. pulling rope; 9. telescopic rod; 10. cushion; 11. top screw; 12. elastic pulling hook; 13. positioning ring; 14. movable bead; 15. screw head; 16. U-shaped clamp; 17. bearing; 18. spiral cylinder; 19. gasket; 20. second adjusting platform; 21. bottom plate; 22. nut. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figures 1 to 5As shown, the heart valve forming traction system of this embodiment includes a spreader body 1, and the actual spreader body 1 is a whole sternal spreader, which can be used to spread the sternum during heart surgery. The spreader body 1 is detachably mounted with a support frame, which can support and mount the traction component, and the support frame is detachably mounted with a second adjustment platform 20, which can be mounted at multiple positions of the support frame, and the second adjustment platform 20 is mounted with a clamping cylinder 6, the interior of the clamping cylinder 6 is conductive to both ends, and is a straight cylinder structure, and a fine-tuning mechanism is movably mounted on the clamping cylinder 6, which can rotate under force, and a pull rope 8 is mounted on the fine-tuning mechanism, which serves as a connecting component and has a smooth surface, and a movable bead 14 is mounted on the pull rope 8, and the movable bead 14 is a bead with a moderate surface friction coefficient, and there is a conductive cylindrical The through hole is convenient for the pull rope 8 to pass through, and the actual pull rope 8 is threaded with multiple movable beads 14. The two ends of the pull rope 8 extend outward through the two ends of the clamping tube 6. The actual movement of the pull rope 8 is adjusted by the fine-tuning mechanism on the clamping tube 6, and a pull claw 7 is installed at one end of the pull rope 8. The pull claw 7 is made of medical metal material. In actual valve surgery, specific human tissues can be tightened and pushed apart to facilitate the operation. There are pull claws 7 of different sizes and shapes. The first adjustment platform 5 is detachably installed on the support frame on one side of the first adjustment platform 5. The structure is similar to the second adjustment platform 20, and both can be installed at multiple positions of the support frame. A traction mechanism for pulling the pull rope 8 is installed on the first adjustment platform 5, which can directly adjust the force angle of the pull rope 8 or greatly adjust the tension of the pull rope 8.

[0030] Specifically, the first adjustment platform 5 and the second adjustment platform 20 are both annular components, which can actually be sleeved on the support frame. The surfaces of the first adjustment platform 5 and the second adjustment platform 20 are both installed with top screws 11 through screw holes. The top screws 11 can move with the help of threads, and the ends of the top screws 11 are pressed against the surface of the support frame to achieve a locking effect.

[0031] Furthermore, a soft pad 10 is installed at the end of the top screw 11, and the soft pad 10 contacts the surface of the support frame. The soft pad 10 is made of a rubber material with a large friction coefficient and good flexibility, and can be located between the top screw 11 and the surface of the support frame to increase friction and fixing force.

[0032] Furthermore, the support frame is composed of two upright poles 3 and two transverse cross bars 4 combined by means of pins, and the upright poles 3 are actually vertically installed on the spreader body 1, and the two cross bars 4 arranged in the upper and lower positions are respectively installed between the two upright poles 3. In actual use, as long as the sizes of the upright poles 3 and the cross bars 4 are met, before the upright poles 3 and the cross bars 4 are connected by pins, the first adjustment platform 5 and the second adjustment platform 20 can be sleeved on the same or different cross bars 4, or can be sleeved on the same or different upright poles 3. The surfaces of the upright poles 3 and the cross bars 4 are provided with anti-slip grooves to increase the friction between the cushion 10.

[0033] Furthermore, the fine-tuning mechanism includes a screw head 15 and a spiral barrel 18. The screw head 15 is installed at one end of the positioning barrel 6 with the help of a bearing 17. The bearing 17 is located at the edge of the inner wall surface of the positioning barrel 6. There is a handle with a large surface area on the surface of the screw head 15. The screw head 15 can rotate with the help of the bearing 17 under force. An oblique through hole is provided inside the screw head 15. The spiral barrel 18 is installed at one end of the screw head 15 on the inner side of the bearing 17. The spiral barrel 18 is a spiral metal component as a whole, and the surface friction coefficient is large. The spiral barrel 18 extends to the inside of the positioning barrel 6, that is, the end of the spiral channel of the spiral barrel 18 extends into the oblique through hole. The two can form a channel, and the pull rope 8 with the movable bead 14 passes through the channel. Move left and right along the channel, and when the spiral barrel 18 rotates, affected by its structure, it will push the movable bead 14 on its channel to move, drive the pull rope 8 to move, and thus achieve the effect of fine-tuning.

[0034] Furthermore, a U-shaped clamp 16 is installed on the circumferential surface of the positioning tube 6 through the rotating shaft, and an anti-slip rubber pad is installed in the U-shaped groove. The positioning tube 6 is installed in a vertical state to the rotating shaft, and the U-shaped clamp 16 is inserted into the gap between the handle end of the screw head 15 and the positioning tube 6. After tightening the pulling claw 7, the U-shaped clamp 16 can be inserted into and fill the gap between the handle end of the screw head 15 and the positioning tube 6. With the help of extrusion and friction, the screw head 15 is prevented from rotating due to external force, thereby realizing a fixed limiting operation on the movable bead 14 inside the spiral tube 18 and even the entire pull rope 8. At this time, the spiral tube 18 relies on friction to limit the movable bead 14.

[0035] Furthermore, a retaining ring 13 is installed at the other end of the pull rope 8. The diameter of the retaining ring 13 is larger than the through hole of the movable bead 14. The pull rope 8 with the retaining ring 13 on one end is led out from the screw head 15 through the oblique through hole, which can limit the movable bead 14 at the end of the pull rope 8 to prevent the movable bead 14 from falling off the pull rope 8. The pull rope 8 can be tightened manually with the help of the retaining ring 13, so that relative movement occurs between the pull rope 8 and the movable bead 14, making the movable bead 14 more compact and squeezed against each other to form hard contact, thereby increasing the overall hardness and limiting ability of the entire pull rope 8 and preventing the pull claw 7 from moving after fixation and affecting actual use.

[0036] Furthermore, the traction mechanism includes a telescopic rod 9 and an elastic hook 12. The telescopic rod 9 is installed on the circumferential surface of the first adjustment platform 5 and has a telescopic effect. Generally, it is only on the expander body 1 when it is contracted. It is only used when it is necessary to adjust the force angle of the pull rope 8 or to adjust the tension of the pull rope 8 to a large extent. The elastic hook 12 is installed at the output end of the telescopic rod 9 and has a smooth surface. There is an elastic sheet on the elastic hook 12. The pull rope 8 can be inserted into the elastic hook 12. The elastic hook 12 performs a pulling operation on the pull rope 8, and the telescopic rod 9 drives the elastic hook 12 to adjust its position.

[0037] Furthermore, a connecting piece 2 is installed on the surface of the opener body 1 connected to the support frame. An opening is set on the connecting piece 2. The connecting piece 2 is an L-shaped metal sheet as a whole. There is a large gap between the opening and the opener body 1, and the end of the vertical rod 3 can be inserted into the opening.

[0038] Furthermore, a bottom plate 21 is installed at the bottom end of the vertical pole 3. When the vertical pole 3 is inserted into the connecting piece 2, the bottom plate 21 is located below the connecting piece 2. A gasket 19 is sleeved on the surface of the vertical pole 3 above the bottom plate 21. The surface roughness is relatively large and has an anti-slip effect. A nut 22 is threadedly installed on the surface of the vertical pole 3 above the gasket 19. The nut 22 is forced to rotate downward to squeeze the gasket 19 toward the upper end surface of the connecting piece 2, thereby achieving downward limiting clamping between the vertical pole 3 and the connecting piece 2 to meet the installation requirements of the vertical pole 3.

[0039] The method of using this embodiment is as follows: during actual use, the spreader body 1 is used to spread the sternum, and when the vertical rods 3 and the horizontal rods 4 are installed on the two spreading plates of the spreader body 1 to form a support frame, according to actual surgical needs, if multiple pulling claws 7 are needed, multiple second adjustment platforms 20 with pull ropes 8 are respectively installed on the two support frames, generally, the number of second adjustment platforms 20 on the left and right support frames is symmetrical to each other, and multiple first adjustment platforms 5 are installed on the support frames for reserved use, and the telescopic rod 9 is guaranteed to be fully retracted, so that the telescopic rod 9 and even the elastic retractor 12 are above the spreading plate of the spreader body 1, and do not affect the actual operation. For ease of use, the second adjustment platform 20 is generally installed on the upper horizontal rod 4, and the first adjustment platform 5 is installed on the upper horizontal rod 4. The platform 5 is installed on the horizontal bar 4 below to ensure that there is a certain height difference between the first adjustment platform 20 and the second adjustment platform 5. During the actual pulling operation, if a certain claw 7 grabs a certain human tissue, in order to quickly tighten the pull rope 8 and ensure the gripping effect of the claw 7, the first adjustment platform 5 can be quickly moved along the horizontal bar 4 to the bottom of the pull rope 8, and the top screw 11 is rotated so that the cushion 10 on the top screw 11 is pressed and fixed to the horizontal bar 4, the telescopic rod 9 is extended, and the pull rope 8 is stuck into the elastic hook 12. The telescopic rod 9 is quickly returned. Under the pulling effect of the elastic hook 12, the pull rope 8 can be quickly tightened. At this time, the force direction of the pull rope 8 and the claw 7 is changed, and the pull rope 8 at the end not equipped with the claw 7 is affected by the friction between the movable bead 14 and the spiral cylinder 18. The U-shaped clamp 16 can be rotated to guide the U-shaped clamp 16 out of the gap between the screw head 15 and the clamping tube 6, driving the screw head 15 to rotate, so that the spiral tube 18 rotates and pushes the movable bead 14 to guide the screw head 15 with the help of the spiral angle characteristics, thereby tightening the drawstring 8. After the drawstring 8 is continuously tightened, the first adjustment platform 5 can be removed. Without removing it, the telescopic rod 9 and even the elastic hook 12 can be pressed down, thereby pressing down the drawstring 8 on the elastic hook 12 to ensure that the drawstring 8 is in a lower position and will not affect the actual operation. After the adjustment is completed, the U-shaped clamp 16 is clamped into the screw head 15 for resetting and clamping. In order to increase the hardness of the drawstring 8 and avoid large movement of the claw 7 under stress, the movable bead 14 can be manually tightened. At the same time, the locking ring 13 is driven to pull outward, and relative movement occurs between the pull rope 8 and the movable bead 14, and the friction between the movable bead 14 and the spiral drum 18 is artificially overcome, so that the gap between the movable bead 14 becomes smaller and smaller, thereby producing a hard tightening effect, and the entire pull rope 8 becomes a straight rope body, and the mobility is greatly reduced. After the manpower is removed, the friction between the spiral drum 18 and the movable bead 14 causes the movable bead 14 to reset with a small offset, thereby keeping the entire pull rope 8 in a stalemate state, which is convenient for applying a pulling force in a fixed direction to the pulling claw 7. In order to ensure that the pull rope 8 can move normally relative to the movable bead 14 and to ensure sufficient friction, the number of rotations of the spiral drum 18 needs to be appropriately designed, and 3-4 turns can be selected, that is, the number of rotations of the pull rope 8.Avoid the pull rope 8 being unable to be pulled due to excessive force.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A traction system for heart valve shaping, comprising a stretcher body (1), characterized in that: The main body (1) of the spreader is detachably mounted with a support frame, the support frame is detachably mounted with a second adjustment platform (20), the second adjustment platform (20) is mounted with a positioning tube (6), the interior of the positioning tube (6) is conductive to both ends, and a fine-adjustment mechanism is movably mounted on the positioning tube (6), a pull rope (8) is mounted on the fine-adjustment mechanism, a movable bead (14) is mounted on the pull rope (8), both ends of the pull rope (8) extend outwards through both ends of the positioning tube (6), a pull claw (7) is mounted on one end of the pull rope (8), and a positioning ring (13) is mounted on the other end of the pull rope (8), the first adjustment platform (5) is detachably mounted on the support frame on one side of the first adjustment platform (5), and a traction mechanism for traction of the pull rope (8) is mounted on the first adjustment platform (5); The fine adjustment mechanism comprises a screw head (15) and a spiral barrel (18); the screw head (15) is mounted on one end of the locking barrel (6) by means of a bearing (17); an oblique through hole is provided inside the screw head (15); the spiral barrel (18) is mounted on one end of the screw head (15) inside the bearing (17), and the spiral barrel (18) extends into the interior of the locking barrel (6); A U-shaped clamp (16) is mounted on the circumferential surface of the clamping tube (6) via a rotating shaft, and the U-shaped clamp (16) is clamped into the gap between the handle end of the screw head (15) and the clamping tube (6).

2. A traction system for heart valve shaping according to claim 1, characterized in that: The first adjustment platform (5) and the second adjustment platform (20) are both annular components, and top screws (11) are installed on the surfaces of the first adjustment platform (5) and the second adjustment platform (20) through screw holes.

3. A traction system for heart valve shaping according to claim 2, characterized in that: A soft pad (10) is installed at the end of the top screw (11), and the soft pad (10) is in contact with the surface of the support frame.

4. A traction system for heart valve shaping according to claim 1, characterized in that: The support frame is composed of two upright poles (3) and two transverse cross bars (4) which are assembled by means of pins, and the surfaces of the upright poles (3) and the cross bars (4) are both provided with anti-slip grooves.

5. The heart valve shaping traction system according to claim 1, characterized in that: The traction mechanism comprises a telescopic rod (9) and an elastic hook (12); the telescopic rod (9) is mounted on the circumferential surface of the first adjustment platform (5), and the elastic hook (12) is mounted on the output end of the telescopic rod (9).

6. A traction system for heart valve shaping according to claim 1, characterized in that: A connecting piece (2) is installed on the surface of the spreader body (1) connected to the support frame, and an opening is provided on the connecting piece (2).

7. A traction system for heart valve shaping according to claim 4, characterized in that: A bottom plate (21) is installed at the bottom end of the vertical pole (3), a gasket (19) is sleeved on the surface of the vertical pole (3) above the bottom plate (21), and a nut (22) is installed on the surface of the vertical pole (3) above the gasket (19) via a thread.

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