CN112826639A

CN112826639A - Valve holder

Info

Publication number: CN112826639A
Application number: CN202110167737.2A
Authority: CN
Inventors: 阮成民; 肖建平; 翟梦林
Original assignee: Guangdong Pulse Medical Technology Co ltd
Current assignee: Guangdong Pulse Medical Technology Co ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-05-25

Abstract

The invention relates to a valve holder. The valve holder comprises a holding assembly, a connecting rod assembly, an elastic self-locking piece, a releasing assembly, a base and a driving shaft; the clamping assembly comprises a connecting plate, two clamping pieces and two clamping arms; the clamping assembly comprises a connecting plate, two clamping pieces and two clamping arms; the two clamping arms are rotationally connected, and the rotational connection position of the two clamping arms is rotationally connected with the connecting plate; the two clamping pieces are oppositely arranged on the connecting plate; one of the two clamping arms corresponds to one clamping piece; one end of the first connecting piece is rotatably connected with the rotating connection position of the clamping arm and the connecting plate, the other end of the first connecting piece is rotatably connected with one end of the second connecting piece, and the other end of the second connecting piece is rotatably connected with the base; the elastic self-locking piece is connected between the base and the clamping assembly so as to enable the clamping assembly and the base to reset; the driving shaft penetrates through the releasing assembly to be in threaded connection with the base so as to drive the base to move.

Description

Valve holder

Technical Field

The invention relates to the technical field of medical instruments, in particular to a valve holder.

Background

The mitral valve is a two-piece valve attached to the periphery of the ostium of the left ventricle and attached to the papillary muscles by chordae tendineae, and functions to prevent blood from the left ventricle from flowing back into the left atrium. Mitral Regurgitation (MR) is a condition in which the left ventricle fails to close completely upon contraction due to congenital abnormalities or acquired lesions, causing a portion of the blood flowing from the left atrium into the left ventricle to regurgitate back into the left atrium, causing a series of pathological changes and clinical symptoms in the heart, which, when severe, can lead to heart failure. The valve forceps instrument developed according to the technical principle of surgical valve edge-to-edge suturing is the most certain at present because of high safety, simple technical principle and great feasibility. The valve clamping device clamps the edges of two valve leaflets of the mitral valve through clamping arms and clamping pieces, so that the gaps between the valve leaflets disappear or become small during the systole, and the mitral regurgitation is reduced.

At present, a commonly used valve holder comprises a base, a supporting arm, a clamping arm, a connecting rod, a mandrel and a self-locking device; the one end and the basal portion of support arm splice, and the other end and the arm lock of support arm are articulated, and two arm locks are articulated each other, and the connecting rod is connected with the basal portion, and dabber drive connecting rod moves to the drive basal portion moves, thereby the drive support arm rotates, thereby the drive arm lock rotates (also the arm lock is opened). The self-locking device is used for limiting the movement of the connecting rod and consists of a sleeve, a U-shaped connecting wire, an extrusion roller and a metal sheet, the sleeve is a hollow cylinder, an L-shaped groove is formed in the lower part of the U-shaped connecting wire, and the extrusion roller is positioned in the L-shaped groove; the U-shaped connecting wire is welded on the sleeve, the L-shaped groove of the U-shaped connecting wire is controlled to move upwards or downwards through the silk thread, the extrusion roller moves upwards and downwards along with the L-shaped groove, and the bending degree of the metal sheet is changed; when the metal sheet is nearly flat, the connecting rod can move freely in an unlocked state, and when the metal sheet is restored to a bent shape, the middle hole is deformed due to deformation, so that the connecting rod cannot move, and the locking function is achieved. Such a valve holder is complicated in structure.

Disclosure of Invention

The invention aims to provide a valve holder to solve the technical problem of complicated structure of the valve holder in the prior art to a certain extent.

The present invention provides a valve holder comprising: the clamping assembly, the connecting rod assembly, the elastic self-locking piece, the releasing assembly, the base and the driving shaft are arranged on the base; the clamping assembly comprises a connecting plate, two clamping pieces and two clamping arms; the clamping assembly comprises a connecting plate, two clamping pieces and two clamping arms; the two clamping arms are rotationally connected, and the rotational connection position of the two clamping arms is rotationally connected with the connecting plate; the two clamping pieces are oppositely arranged on the connecting plate; one of the two clamping arms corresponds to one clamping piece; the connecting rod assembly comprises a first connecting piece and a second connecting piece; one end of the first connecting piece is rotatably connected to the rotating connection position of the clamping arm and the connecting plate, the other end of the first connecting piece is rotatably connected with one end of the second connecting piece, and the other end of the second connecting piece is rotatably connected with the base; the elastic self-locking piece is connected between the base and the clamping assembly so as to enable the clamping assembly and the base to reset; the driving shaft penetrates through the releasing assembly to be in threaded connection with the base so as to drive the base to move.

Further, the clamping arm comprises a base plate and two support plates; the two support plates are respectively arranged on two sides of the base plate, the support plates are connected to the lower end of the base plate so as to protrude out of the base plate in the length direction of the base plate, and the support plates are rotatably connected with the base.

Furthermore, the number of the first connecting pieces is two, one of the first connecting pieces and one of the support plates in one of the clamping arms are integrally formed, the other of the first connecting pieces and one of the support plates in the other of the clamping arms are integrally formed, and the two first connecting pieces are located on different sides of the substrate.

Further, the clamping piece comprises a connecting part and a matching part which are connected with each other, the connecting part is connected with the connecting plate, and the matching part is matched with the base plate; the connecting part is made of elastic materials.

Further, the clip further comprises a tooth; a plurality of biting teeth are arranged on two sides of the matching part, and are arranged at intervals along the length direction of the clamping piece; an included angle is formed between the biting teeth and the matching part, the biting teeth are close to the corresponding clamping arms, and grooves are formed in the tops of the biting teeth.

Further, the elastic self-locking piece is clamped between the base and the connecting plate.

Further, the base comprises a support rod and a power rod; the length direction of the supporting rod and the length direction of the power rod are arranged in an intersecting manner; the support rod is rotatably connected with the second connecting piece, and the power rod is connected with the driving shaft.

Further, the elastic self-locking piece is a spring; the connecting plate is provided with a through hole, one end of the power rod, which is far away from the supporting rod, penetrates through the through hole, and the spring sleeve is arranged outside the power rod.

Further, the release assembly includes an upper release sleeve and a lower release sleeve; the lower end of the upper release sleeve is provided with an upper limiting groove, the upper end of the lower release sleeve is provided with a lower limiting groove, and the upper limiting groove is connected with the lower limiting groove to prevent the upper release sleeve from axially moving on the upper release sleeve; the lower end of the lower release sleeve is fixedly connected with the connecting plate.

Further, elasticity is from the locking part includes two from the locking plate, two elastic connection between the locking plate, two from the locking plate all with the base is connected, one from the locking plate with two one in the arm lock is connected, another from the locking plate with two another in the arm lock is connected.

Furthermore, a reticular sheath is wrapped outside the valve holder, and the sheath is made of a high molecular compound.

The invention provides a valve holder set, which comprises a plurality of valve holders, wherein the overall lengths of the valve holders are different, and the overall widths of the valve holders are different.

The invention provides a valve holder, which comprises a holding assembly, a connecting rod assembly, an elastic self-locking piece, a releasing assembly, a base and a driving shaft, wherein the holding assembly is arranged on the base; the clamping assembly comprises a connecting plate, two clamping pieces and two clamping arms; the clamping assembly comprises a connecting plate, two clamping pieces and two clamping arms; the two clamping arms are rotationally connected, and the rotational connection position of the two clamping arms is rotationally connected with the connecting plate; the two clamping pieces are oppositely arranged on the connecting plate; one of the two clamping arms corresponds to one clamping piece; one end of the first connecting piece is rotatably connected with the rotating connection position of the clamping arm and the connecting plate, the other end of the first connecting piece is rotatably connected with one end of the second connecting piece, and the other end of the second connecting piece is rotatably connected with the base; the elastic self-locking piece and the release component are respectively positioned at two sides of the connecting plate, and one end of the elastic self-locking piece, which is far away from the connecting plate, is connected with the base; the driving shaft penetrates through the releasing assembly to be in threaded connection with the base so as to drive the base to move.

When the valve holder provided by the invention is used, in an initial state, the valve holder can be in a closed state, namely the clamping arms and the clamping pieces are folded at the releasing component, and the condition that an opening angle does not exist between the clamping arms and the releasing component can also be understood; the release assembly is fixed by an external auxiliary tool to provide a force application point for the movement of the driving shaft, the driving shaft is rotated to move, the driving shaft is connected with the base through threads, the rotation of the driving shaft can be converted into the translation of the base, and the base moves upwards (namely towards the direction close to the release assembly, and vice versa) under the driving of the driving shaft; a connecting rod mechanism is formed among the base, the first connecting piece, the second connecting piece and the clamping arm, the base moves to drive the second connecting piece to move so as to drive the first connecting piece to move and further drive the clamping arm to rotate, and in the upward movement process of the base, the clamping arm rotates towards the direction far away from the release assembly, namely the clamping arm has a certain opening angle relative to the release assembly; the shape of the elastic self-locking piece is changed along with the movement of the base so as to store the energy for resetting the base, the base is linked with the support arm, and then the elastic self-locking piece stores the energy for resetting the clamping assembly, or the shape of the elastic self-locking piece is changed along with the movement of the support arm so as to store the energy for resetting the clamping assembly, and the support arm is linked with the base so as to store the assembly for resetting the base; when the clamping arm is opened to a proper angle (namely the clamping arm reaches a position capable of clamping the edge of the valve leaf), the clamping piece is buckled on the clamping arm, and the valve leaf is clamped by the clamping arm and the clamping piece together; then, the driving shaft continues to rotate until the driving shaft is separated from the base, the driving shaft is released, the base and the clamping arms reset under the action of the elastic self-locking piece and return to the closed state again, at the moment, the edges of one valve leaflet are clamped by the pair of clamping arms and the clamping pieces, and the edges of the two valve leaflets can be folded and close together by the two pairs of clamping arms and the clamping pieces, so that the effect of sewing the edges of the valve leaflets of the mitral valve is achieved.

The connecting rod assembly in the valve holder provided by the invention has the advantages that the structure is simple, the connecting mechanism formed by the connecting rod assembly and the clamping arm and the base is simple, and the occupied space is small; the clamping arm is opened to be closed through the elastic self-locking piece, and the structure is simple, the operation is easy, and the control is easy; therefore, the valve holder provided by the invention has the advantages of simple structure, small volume, easy operation, easy control and convenient use.

It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily restrictive of the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the disclosure. Together, the description and drawings serve to explain the principles of the disclosure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a first embodiment of the present invention showing a closed valve holder;

FIG. 2 is a schematic view of the valve holder of FIG. 1 shown in an open configuration;

FIG. 3 is an exploded view of the valve holder shown in FIG. 1;

FIG. 4 is a schematic view of the clamp arms of the valve holder shown in FIG. 1;

FIG. 5 is a schematic view of the clip of the valve holder of FIG. 1;

FIG. 6 is a schematic view of the structure of the base of the valve holder shown in FIG. 1;

FIG. 7 is a schematic structural view of a valve holder according to a second embodiment of the present invention;

FIG. 8 is a schematic view of the structure of the resilient self-locking member of the valve holder of FIG. 7;

fig. 9 is a schematic structural view of a valve holder according to a third embodiment of the present invention.

Icon: 100-a clamping assembly; 200-a linkage assembly; 300-resilient self-locking element; 400-a release assembly; 500-a base; 600-a drive shaft; 800-sheath; 110-a clamp arm; 120-a clip; 130-a connecting plate; 140-control line; 150-biting teeth; 111-a substrate; 112-a plate; 210-a first connector; 220-a second connector; 310-self locking tab; 320-connecting piece; 330-connecting hole; 410-upper release sleeve; 420-lower release sleeve; 430-upper limiting groove; 440-lower limit groove; 510-a support bar; 520-power rod.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 6, the present invention provides a valve holder comprising a holder assembly 100, a link assembly 200, an elastic self-locking piece 300, a release assembly 400, a base 500 and a drive shaft 600; the clamping assembly comprises a connecting plate, two clamping pieces and two clamping arms; the two clamping arms are rotationally connected, and the rotational connection position of the two clamping arms is rotationally connected with the connecting plate; the two clamping pieces are oppositely arranged on the connecting plate; one of the two clamping arms corresponds to one clamping piece; the linkage assembly 200 includes a first link 210 and a second link 220; one end of the first connecting member 210 is rotatably connected to the rotational connection position of the clamping arm 110 and the connecting plate 130, the other end of the first connecting member 210 is rotatably connected to one end of the second connecting member 220, and the other end of the second connecting member 220 is rotatably connected to the base 500; the elastic self-locking member 300 is connected between the base 500 and the clamping assembly 100 to enable the clamping assembly 100 and the base 500 to be reset; the driving shaft 600 is screw-coupled with the base 500 through the release assembly 400 to drive the base 500 to move.

When the valve holder provided by this embodiment is used, in an initial state, the valve holder may be in a closed state, that is, the clamping arms 110 and the clips 120 are folded at the releasing assembly 400, it can also be understood that there is no opening angle between the clamping arms 110 and the releasing assembly 400; the release assembly 400 is fixed by using an external auxiliary tool to provide a force application point for the movement of the driving shaft 600, the driving shaft 600 is rotated to move, the driving shaft 600 is connected with the base 500 through threads, the rotation of the driving shaft 600 can be converted into the translation of the base 500, and the base 500 moves upwards (namely, in a direction close to the release assembly 400, and vice versa) under the driving of the driving shaft 600; a connecting rod mechanism is formed among the base 500, the first connecting piece 210, the second connecting piece 220 and the clamping arm, the base 500 moves to drive the second connecting piece 220 to move to drive the first connecting piece 210 to move and further drive the clamping arm to rotate, and in the upward movement process of the base 500, the clamping arm rotates towards the direction far away from the releasing assembly 400, namely the clamping arm has a certain opening angle relative to the releasing assembly 400; the shape of the elastic self-locking piece is changed along with the movement of the base so as to store the energy for resetting the base, the base is linked with the support arm, and then the elastic self-locking piece stores the energy for resetting the clamping assembly, or the shape of the elastic self-locking piece is changed along with the movement of the support arm so as to store the energy for resetting the clamping assembly, and the support arm is linked with the base so as to store the assembly for resetting the base; when the clamping arms are opened to a proper angle (namely, the clamping arms reach a position capable of clamping the edges of the valve leaflets), the clamping pieces 120 are buckled on the clamping arms 110, and the valve leaflets are clamped by the clamping arms 110 and the clamping pieces 120 together; then, the driving shaft 600 continues to rotate until the driving shaft 600 is separated from the base 500, the driving shaft 600 is released, and the base 500 and the clamping arms are reset under the action of the elastic self-locking element 300 and return to the closed state again, at this time, one pair of clamping arms 110 and the clamping piece 120 clamp the edge of one leaflet, and the two pairs of clamping arms 110 and the clamping piece 120 can close the edges of two leaflets together, thereby achieving the effect of suturing the edges of the leaflets of the mitral valve.

The connecting rod assembly 200 in the valve holder provided by the embodiment has a simple structure, and a connecting mechanism formed by the connecting rod assembly 200 and the clamping arm 110 and the base 500 is simple and occupies a small space; the clamping arm 110 is opened to be closed through the elastic self-locking piece 300, and the structure is simple, the operation is easy, and the control is easy; therefore, the valve holder provided by the embodiment has the advantages of simple structure, small volume, easiness in operation and control and convenience in use.

Specifically, as shown in fig. 1 to 3, one of the two clamping arms 110 is a first clamping arm, the other is a second clamping arm, and one of the two clamping pieces 120 is a first clamping piece, and the other is a second clamping piece; the first clamping arm and the first clamping piece are paired and used for clamping one valve leaflet, and the second clamping arm and the second clamping piece are paired and used for clamping another valve leaflet. The connection plate 130 includes four sides, wherein a first side and a second side are disposed opposite to each other, and a third side and a fourth side are disposed opposite to each other, the third side being located between the first side and the second side, and the fourth side being located between the first side and the second side. A first clip arm and a first clip may be located on a first side of the web 130, and a second clip arm and a second clip may be located on a second side of the web 130; the first clamping piece is connected with the first side of the connecting plate 130, the second clamping piece is connected with the second side of the connecting plate 130, the lower end of the first clamping arm is rotatably connected with the lower end of the second clamping arm, and the rotary connection position of the first clamping arm and the second clamping arm is rotatably connected with the base 500.

The clip 120 includes a connection portion and a fitting portion connected to each other, the connection portion being connected to the connection plate 130, the fitting portion being fitted to the base plate 111; the connecting part is made of elastic materials. In the opening process of the clamping arm 110, the clamping piece 120 moves towards the direction far away from the clamping arm 110, so that a gap is formed between the clamping arm 110 and the clamping piece 120 to accommodate the valve leaflet, after the clamping arm 110 reaches the position for clamping the valve leaflet, the clamping piece 120 is released, at the moment, the connecting part of the clamping piece 120 has elasticity, and the connecting part can drive the whole clamping piece 120 to reset to be buckled with the clamping arm 110, so that the valve leaflet is clamped.

Wherein, the clamping piece 120 can adopt the nickel titanium alloy that has good metal resilience, and is optional, and the cooperation portion of clamping piece 120 also adopts the same material with connecting portion, and clamping piece 120 can integrated into one piece like this for simple structure, convenient processing manufacturing.

When the clamping arm is at the maximum opening angle, the clamping piece 120 and the clamping arm 110 are in a buckling state, so that the clamping piece 120 can be buckled with the clamping arm 110 no matter which opening angle the clamping arm 110 is at.

In order to facilitate the separation of the clip 120 from the clip arm 110, a wire hole may be formed at an upper end of the clip 120 (an end of the clip 120 away from the connecting plate 130), a control wire 140 may be inserted into the wire hole, and an operator may pull the clip 120 to rotate away from the clip arm 110 by pulling the control wire 140.

As shown in fig. 3 and 4, on the basis of the above embodiment, further, the clamping arm 110 includes a base plate 111 and two support plates 112; two brackets 112 are respectively disposed on both sides of the substrate 111, and the brackets 112 are connected to the lower end of the substrate 111 to protrude the substrate 111 in the length direction of the substrate 111, and the brackets 112 are rotatably connected to the base 500.

In this embodiment, the two brackets 112 are respectively connected to two sides of the substrate 111, and the brackets 112 are located at the lower end of the substrate 111 to be rotatably connected to the base 500.

Wherein the cross section of the base plate 111 may be U-shaped, so that the clip 120 can be wrapped to make the clamping of the valve leaflet more stable.

As shown in fig. 3 and 4, based on the above embodiment, further, the number of the first connectors 210 is two, wherein one first connector 210 is integrally formed with one support plate 112 in one clamping arm 110, the other first connector 210 is integrally formed with one support plate 112 in the other clamping arm 110, and the two first connectors 210 are located on different sides of the substrate 111. Correspondingly, the number of the second connecting members 220 is also two, and the two second connecting members 220 are connected with the two first connecting members 210 in a one-to-one correspondence manner.

In this embodiment, the first connecting member 210 is integrally formed with the first plate 112 of the two plates 112, that is, the first connecting member 210 is integrally formed with the clamping arm 110, so that the number of parts of the valve holder can be reduced, the connecting structure can be reduced, and the structure of the valve holder is further simplified.

Two first connectors 210 are respectively located at two sides of the base plate 111, that is, one first connector 210 is located at the third side of the connecting plate 130, and the other first connector 210 is located at the fourth side of the connecting plate 130. Two connecting holes are formed in the first connecting piece 210, one connecting hole is formed in the second support plate 112 of the two support plates 112, and a bolt or other fasteners penetrate through the connecting holes in the first connecting piece 210 and the connecting holes in the second support plate 112 and then are inserted into the base 500, so that the two clamping arms are rotatably connected, and meanwhile, the clamping arms are rotatably connected with the base 500; the other connecting hole of the first connecting member 210 is rotatably connected to the second connecting member 220 by a fastener (e.g., a bolt).

As shown in fig. 3 and 5, in addition to the above embodiments, the clip 120 further includes a tooth 150; a plurality of teeth 150 are arranged on both sides of the fitting portion, and the teeth 150 are arranged at intervals along the length direction of the clip 120; an included angle is formed between the biting tooth 150 and the matching part, the biting tooth 150 is arranged close to the corresponding clamping arm 110, and a groove is formed at the top of the biting tooth 150.

In this embodiment, the biting teeth 150 are provided on the clip 120, so that the leaflet can be more firmly clamped. Further, the top of the teeth 150 is provided with a groove, which can increase the friction between the teeth 150 and the valve, so that the clip 120 can grip the valve more firmly.

The groove can be in the shape of a semicircle, a V or a U.

The number of the grooves can be one, or two, three or four grooves; when the number of the grooves is plural, the top of the biting teeth 150 is serrated or waved.

On the basis of the above embodiments, further, the elastic self-locking member 300 can extend and contract in the axial direction of the driving shaft, that is, the elastic self-locking member is sandwiched between the connecting plate and the base, and when the driving shaft drives the base to move upward, the elastic self-locking member is compressed.

Wherein, elasticity is from the latch fitting can be for being the spring leaf of wave shape, perhaps elasticity is C type spring leaf from the latch fitting, and a support arm and the connecting plate of C type spring leaf are connected, and another support arm and the base of C type spring leaf are connected.

Optionally, the elastic self-locking piece 300 is a spring, and has the advantages of simple structure, reliable elasticity and low cost.

Can set up under initial condition, elasticity self-locking piece 300 has the volume of precompression, can make elasticity self-locking piece 300 all have the effort to connecting plate 130 and base 500 by opening to the closed whole in-process at the valve holder like this, after clamping arm 110 and clamping piece 120 with the valve leaflet centre gripping and get back to closed position, elasticity self-locking piece 300 still can give base 500 and connecting plate 130 thrust, makes the position of base 500 more fixed to it is more stable firm to make clamping arm 110 and clamping piece 120 can be with the valve leaflet centre gripping.

On the basis of the above embodiments, further, the base 500 may have various structural forms, such as: the base 500 is rectangular, circular or conical, etc.; the base 500 may be a plate, block, or frame structure.

As an alternative, as shown in fig. 3 and 6, the base 500 includes a support bar 510 and a power bar 520; the length direction of the support rod 510 is intersected with the length direction of the power rod 520; the support rod 510 is rotatably connected to the second link 220, and the power rod 520 is connected to the driving shaft 600.

In this embodiment, two ends of the supporting rod 510 are respectively rotatably connected to one end of the second connecting member 220 away from the first connecting member 210, the supporting rod 510 is fixedly connected to the power rod 520, and the power rod 520 is connected to the driving shaft 600. The base 500 of this structure has a simple structure, a small volume, a small occupied space and a small self weight, so that the weight of the valve holder can be reduced.

Wherein, a threaded hole can be arranged on the power rod 520, and an external thread matched with the threaded hole is arranged on the driving shaft 600, thereby realizing the threaded connection between the driving shaft 600 and the base 500.

The support rod and the power rod can be arranged in a T shape.

The springs may be disposed between the connecting plate 130 and the power rod 520, at this time, one spring may be provided, one spring is sleeved outside the driving shaft 600, the number of springs may also be multiple, and the multiple springs are surrounded around the driving shaft 600.

As an alternative, a through hole is formed in the connecting plate 130, one end of the power rod, which is far away from the supporting rod 510, passes through the through hole, and the spring is sleeved outside the power rod 520.

In this embodiment, the power rod 520 is inserted into the through hole, and then the through hole can limit the power rod 520, so that the power rod 520 is stable along with the motion of the driving shaft 600, the spring is sleeved outside the power rod 520, the motion of the spring is also restricted, and the reliability of the valve holder is high.

As shown in fig. 7 and 8, the elastic self-locking member may include two self-locking plates 310, two elastic connections between the self-locking plates 310, two the self-locking plates are all connected to the base, one the self-locking plate 310 is connected to one of the clamping arms, and the other the self-locking plate is connected to the other of the clamping arms.

In this embodiment, when two arm lock rotated, two from the locking plate to keeping away from the direction motion of each other to store the energy that makes the arm lock reset.

One end of one self-locking plate can be connected with one end of the other self-locking plate through a torsion spring, so that the two self-locking plates are elastically connected; when the arm lock is opened, drive the auto-lock piece and open, the torsional spring stores the energy that makes the auto-lock piece reset to the closure state, and the auto-lock piece resets, can promote the arm lock and reset to the closure state, according to the linkage of arm lock and base, and then promotes the base and reset to the closure state.

Optionally, elasticity is from the locking piece still includes the connection piece, and one end of a self-locking piece is connected with the one end of connection piece, and another self-locking piece's the other end is connected with the other end of connection piece, forms U type elastic sheet between the three, and two self-locking pieces and connection piece integrated into one piece can adopt metal such as 304 stainless steel from locking piece and connection piece, utilize the elasticity of metal to realize elastic connection, and is optional, has good metal resilience's nickel titanium alloy. The elastic self-locking piece with the structure has simple structure.

The U-shaped elastic piece can be connected by screw thread, welding or adhesive, etc.

Can set up connecting hole 330 on connection piece 320, set up the spliced pole on the base, the spliced pole is worn to establish in connecting hole 330, and this kind of structure can fix a position U type flexure strip, makes things convenient for the installation of U type spring leaf.

Can set up U type flexure strip and set up the power of closing in advance, can make the arm lock closed more stable. As shown in fig. 3, further to the above embodiments, the releasing assembly 400 includes an upper releasing sleeve 410 and a lower releasing sleeve 420; the lower end of the upper release sleeve 410 is provided with an upper limit groove 430, the upper end of the lower release sleeve 420 is provided with a lower limit groove 440, and the upper limit groove 430 is connected with the lower limit groove 440 to prevent the upper release sleeve 410 from moving axially on the upper release sleeve 410; the lower end of the lower release liner 420 is fixedly coupled to the coupling plate 130.

In this embodiment, the driving shaft 600 passes through the upper release sleeve 410 and the lower release sleeve 420 and extends into the power rod 520, and the driving shaft 600 radially limits the upper release sleeve 410; after the driving shaft 600 is disengaged by the power rod 520, i.e., the clamping arms 110 and the clips 120 complete clamping, the upper release sleeve 410 can move in the radial direction to be separated from the lower release sleeve 420, and the driving shaft 600, the upper release sleeve 410 and the external auxiliary device can be removed to place the other components of the valve holder into the patient individually.

The upper limit groove 430 and the lower limit groove may be arc-shaped or L-shaped.

As shown in fig. 9, based on the above embodiments, further, the valve holder is covered by a mesh sheath 800, the material of the sheath 800 is polymer, especially, the sheath 800 is arranged outside the part (such as the clamping component, the connecting rod component, the elastic self-locking component and the base, etc., where the sheath 800 is covered outside the whole part) of the valve holder left in the patient, and the sheath 800 of polymer can protect the valve; the sheath 800 can be sprayed with a drug coating which is beneficial to endothelialization, and the sheath 800 is arranged in a net shape, so that the area of the drug coating can be increased, and the healing of the operation part of a patient is more facilitated; in addition, the sheath 800 is provided outside the portion of the valve holder remaining in the patient, so that the area of the portion can be increased, the contact area with the valve leaflet can be increased, and damage to the valve leaflet by the valve holder can be reduced.

The invention provides a valve holder set, which comprises a plurality of valve holders in any technical scheme, wherein the whole lengths of the valve holders are different, and the whole widths of the valve holders are different, namely the valve holders can be divided into a plurality of specifications so as to adapt to using objects with different specifications. The valve holder set provided by the embodiment comprises the valve holder in any one of the technical schemes, so that all the beneficial effects of the valve holder are included, and the description is omitted.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.

Claims

1. A valve holder, comprising: the clamping assembly, the connecting rod assembly, the elastic self-locking piece, the releasing assembly, the base and the driving shaft are arranged on the base;

the clamping assembly comprises a connecting plate, two clamping pieces and two clamping arms; the two clamping arms are rotationally connected, and the rotational connection position of the two clamping arms is rotationally connected with the connecting plate; the two clamping pieces are oppositely arranged on the connecting plate; one of the two clamping arms corresponds to one clamping piece;

the connecting rod assembly comprises a first connecting piece and a second connecting piece; one end of the first connecting piece is rotatably connected to the rotating connection position of the clamping arm and the connecting plate, the other end of the first connecting piece is rotatably connected with one end of the second connecting piece, and the other end of the second connecting piece is rotatably connected with the base;

the elastic self-locking piece is connected between the base and the clamping assembly so as to enable the clamping assembly and the base to reset; the driving shaft penetrates through the releasing assembly to be in threaded connection with the base so as to drive the base to move.

2. The valve holder of claim 1, wherein the clip arms comprise a base plate and two struts; the two support plates are respectively arranged on two sides of the base plate, the support plates are connected to the lower end of the base plate so as to protrude out of the base plate in the length direction of the base plate, and the support plates are rotatably connected with the base.

3. The valve holder of claim 2, wherein the first connectors are two in number, one of the first connectors being integrally formed with one of the legs in one of the clamp arms, the other of the first connectors being integrally formed with one of the legs in the other of the clamp arms, and the two first connectors being located on different sides of the base plate.

4. The valve holder of claim 2, wherein the clip comprises a connecting portion and a mating portion connected to each other, the connecting portion being connected to the connecting plate, the mating portion being mated to the base plate; the connecting part is made of elastic materials.

5. The valve holder of claim 4, wherein the clip further comprises a bite tooth; a plurality of biting teeth are arranged on two sides of the matching part, and are arranged at intervals along the length direction of the clamping piece; an included angle is formed between the biting teeth and the matching part, the biting teeth are close to the corresponding clamping arms, and grooves are formed in the tops of the biting teeth.

6. The valve holder of any of claims 1-5, wherein the resilient self-locking piece is sandwiched between the base and the connecting plate.

7. The valve holder of claim 6, wherein the base comprises a support bar and a power bar; the length direction of the supporting rod and the length direction of the power rod are arranged in an intersecting manner; the support rod is rotatably connected with the second connecting piece, and the power rod is connected with the driving shaft.

8. The valve holder of claim 7, wherein the resilient self-locking member is a spring; the connecting plate is provided with a through hole, one end of the power rod, which is far away from the supporting rod, penetrates through the through hole, and the spring sleeve is arranged outside the power rod.

9. The valve holder of any one of claims 1-5, wherein the resilient self-locking member comprises two self-locking tabs, two of the self-locking tabs being resiliently connected to each other, both of the self-locking tabs being connected to the base, one of the self-locking tabs being connected to one of the two clamping arms, and the other of the self-locking tabs being connected to the other of the two clamping arms.

10. The valve holder of claim 1, wherein the release assembly comprises an upper release sleeve and a lower release sleeve; the lower end of the upper release sleeve is provided with an upper limiting groove, the upper end of the lower release sleeve is provided with a lower limiting groove, and the upper limiting groove is connected with the lower limiting groove to prevent the upper release sleeve from axially moving on the upper release sleeve; the lower end of the lower release sleeve is fixedly connected with the connecting plate.