Hemostatic valve

Abstract

The embodiment of the present specification provides a hemostasis valve, comprising: a shell provided with a channel and a through hole, wherein the channel is suitable for passing a suction catheter, and the through hole is through the channel and has an included angle; and an execution component, which is partially accommodated in the through hole and is suitable for continuous movement in the through hole to squeeze or release the suction catheter. By using the above scheme, the adaptability, airtightness and convenience can be considered.

Description

TECHNICAL FIELD

[0001] The present specification relates to the technical field of medical devices, and in particular to a hemostatic valve. BACKGROUND

[0002] Interventional therapy is a frontier treatment technology developed in recent years. Interventional therapy technology uses specially designed interventional instruments to enter the body's pipeline for treatment.

[0003] In interventional instruments, a suction catheter is used to establish a blood passage, usually in cooperation with a dilator, and other components such as a guide wire, a balloon catheter, etc. pass through the suction catheter to reach the lesion site. In order to reduce blood loss, a hemostatic valve is provided at the end of the suction catheter close to the operator (i.e. the operator end), which controls the opening or closing of the blood passage.

[0004] Specifically, according to the opening and closing direction, there is a hemostatic valve that opens and closes perpendicular to the blood flow direction, which controls the opening or closing of the blood passage by releasing or squeezing the suction catheter perpendicular to the blood flow direction. However, for the existing hemostatic valve that opens and closes perpendicular to the blood flow direction, there are problems such as poor adaptability, failure of tightness, and cumbersome operation prone to errors, which can cause the blood passage to be closed in time, increasing the risk of bleeding.

[0005] Therefore, for the hemostatic valve that opens and closes perpendicular to the blood flow direction, how to improve the adaptability, tightness and convenience of the hemostatic valve needs to be solved by those skilled in the art. SUMMARY

[0006] Therefore, the embodiments of the present specification provide a hemostatic valve that can improve the adaptability, tightness and convenience.

[0007] The embodiments of the present specification provide a hemostatic valve, comprising:

[0008] A housing is provided with a passage and a through hole, wherein the passage is adapted to pass through the suction catheter, and the through hole is through the passage and has an included angle;

[0009] An execution component is partially contained in the through hole and is adapted to continuously move in the through hole to squeeze or release the suction catheter.

[0010] Optionally, the number of execution components is multiple, and the multiple execution components are linearly distributed along the passage, or the multiple execution components are symmetrically distributed with the center axis of the passage as the axis of symmetry.

[0011] Optionally, it further comprises a linkage component adapted to drive multiple execution components to move synchronously and continuously.

[0012] Optionally, the housing is a transparent housing.

[0013] Optionally, the execution component comprises an elastic sub-component and a rotating sub-component.

[0014] The elastic sub-component is connected with the rotating sub-component at a first end and is adapted to be in contact with the suction conduit at a second end.

[0015] The rotating sub-component is movably connected with the through hole and is adapted to drive the elastic sub-component to move towards or away from the suction conduit.

[0016] Optionally, the elastic sub-component has a trapezoidal, square, triangular, pentagonal or circular cross-section.

[0017] Optionally, the rotating sub-component is threadedly connected with the through hole.

[0018] Optionally, the shell is adapted to limit the movement range of the fixing sub-component.

[0019] Optionally, the execution component comprises a linear sub-component adapted to continuously move in the through hole to press or release the suction conduit.

[0020] Optionally, the execution component further comprises a tension sub-component sleeved on the linear sub-component and adapted to release or clamp the linear sub-component.

[0021] Optionally, the tension sub-component comprises a cavity and a pressing component; the cavity is sleeved on the linear sub-component; the pressing component is partially inserted into the cavity and the pressing component is sleeved on the linear sub-component and is adapted to release the linear sub-component when approaching the cavity and to clamp the linear sub-component when moving away from the cavity.

[0022] Optionally, the pressing component comprises a pressing body and a reset component; the pressing body is partially inserted into the cavity and the pressing component is sleeved on the linear sub-component and is adapted to approach the cavity and release the linear sub-component; the reset component is connected with the cavity and the pressing body respectively and is adapted to drive the pressing body to move away from the cavity to clamp the linear sub-component.

[0023] The hemostatic valve provided by the embodiment of the present specification comprises a shell and an execution component, wherein the shell is internally provided with a channel and a through hole, the channel is suitable for passing through a suction catheter, the through hole is through the channel and has an included angle; the execution component is partially accommodated in the through hole and is suitable for continuously moving in the through hole to squeeze or release the suction catheter. As can be seen from the above, the limiting distance of the hemostatic valve can be flexibly adjusted through the execution component capable of continuously moving in the through hole, so that the hemostatic valve can be adapted to suction catheters of various sizes and can ensure the airtightness of suction catheters of various sizes. In addition, the hemostatic valve provided by the embodiment of the present specification has a simple structure, is easy to process and implement, and is easy to operate, so that the service life can be improved and the operation failure rate can be reduced. Therefore, the hemostatic valve provided by the embodiment of the present specification can improve the adaptability, airtightness and convenience. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0025] Figure 1 The cross-sectional structure explosion schematic diagram of the hemostatic valve provided by the embodiment of the present specification.

[0026] Figure 2 And Figure 3 The state schematic diagram of the hemostatic valve shown in Figure 1 in use.

[0027] Figure 4 The structure explosion schematic diagram of another hemostatic valve provided by the embodiment of the present specification.

[0028] Figure 5 And Figure 6 The state schematic diagram of the hemostatic valve shown in Figure 4 in use.

[0029] Figure 7a The cross-sectional structure schematic diagram of the clamping state of the tensioner provided by the embodiment of the present specification.

[0030] Figure 7b The cross-sectional structure schematic diagram of the release state of the tensioner provided by Figure 7a .

[0031] Figure 7c The cross-sectional structure schematic diagram of the cavity of the tensioner shown in Figure 7a .

[0032] Figure 7dFig. 1 is a schematic diagram of a structure of a hemostatic valve according to an embodiment of the present disclosure. Figure 7a Fig. 2 is a schematic diagram of a cross-sectional structure of a pressing part of a pressing member of the hemostatic valve shown in Fig. 1.

[0033] Figure 8a Fig. 3 is a schematic diagram of a cross-sectional structure of the pressing member of the hemostatic valve in a clamping state according to another embodiment of the present disclosure.

[0034] Figure 8b Fig. 4 is a schematic diagram of a cross-sectional structure of the pressing member of the hemostatic valve in a releasing state according to another embodiment of the present disclosure. Figure 8a Fig. 5 is a schematic diagram of a cross-sectional structure of the pressing member of the hemostatic valve in the releasing state according to another embodiment of the present disclosure.

[0035] Figure 9 Fig. 6 is a schematic diagram of a structure of a hemostatic valve according to another embodiment of the present disclosure.

[0036] Figure 10 Fig. 7 is a schematic diagram of a structure of a hemostatic valve according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] As known from the background, the existing hemostatic valve with vertical blood flow direction opening and closing has problems such as poor adaptability, sealing failure, and complicated operation and easy to make mistakes, thereby causing the blood path to be unable to be closed in time and increasing the risk of bleeding.

[0038] In order for those skilled in the art to more clearly understand the problems of the existing hemostatic valve with vertical blood flow direction opening and closing, the following is described by way of example.

[0039] In an optional example, the existing hemostatic valve with vertical blood flow direction opening and closing adopts a pressing structure, and two pressing devices configured with springs are used to press or release the suction catheter.

[0040] The limiting distance of the pressing device when released is fixed, and the limiting distance is not easy to adjust, so that the pressing device has strict requirements on the size of the suction catheter, and the adaptability is poor. For example, if the limiting distance of the pressing device when released is 4.0 mm, the maximum outer diameter size of the suction catheter that can be adapted by the hemostatic valve is 4.0 mm. In the case of a suction catheter conveying an expander, a guide wire, a catheter, or the like with an outer diameter greater than 4.0 mm, the pressing device of the hemostatic valve cannot be adapted.

[0041] Moreover, the pressing device presses the suction catheter through the elastic force of the spring, and the elastic force of the spring is uncontrollable and easy to be lost. In the case that the parts conveyed in the suction catheter have a large hardness or the spring elasticity is insufficient, the pressing device is insufficient to press the suction catheter, thereby causing sealing failure.

[0042] In another optional example, the existing vertical blood flow direction opening and closing hemostatic valve adopts an inflation extrusion structure, including a capsule with double-layer membranes and an inner membrane. When the double-layer membranes of the capsule are filled with gas or liquid, the capsule expands and extrudes the inner membrane, thereby extruding the suction catheter. When the gas or liquid filled between the double-layer membranes of the capsule is discharged, the capsule shrinks and gradually no longer extrudes the inner membrane, thereby releasing the suction catheter.

[0043] Since the wall thickness of the capsule and the inner membrane is thin, it is easy to produce defective products during production, such as uneven wall thickness, thereby producing processing defects such as uneven pressure resistance strength, uneven wear resistance, etc., reducing the service life of the capsule and the inner membrane, and easily leading to failure of the sealing property.

[0044] In addition, since the wall thickness of the capsule is thin, the operator needs to pay attention to the internal filling amount to prevent the capsule from exploding. In addition, the capsule and the inner membrane are easily damaged by sharp instruments such as scalpels, needles, etc., and therefore great care needs to be taken when operating around objects. Therefore, the operation of the hemostatic valve with the inflation extrusion structure is more complicated and is prone to operation errors.

[0045] In order to solve the above problems, the hemostatic valve provided by the embodiments of the present application comprises a shell and an execution component, wherein the shell is internally provided with a channel and a through hole, the channel is suitable for passing the suction catheter, and the through hole is through the channel and has an included angle; the execution component is partially accommodated in the through hole and is suitable for continuously moving in the through hole to extrude or release the suction catheter.

[0046] As can be seen from the above, the execution component capable of continuously moving in the through hole can flexibly adjust the limiting distance of the hemostatic valve, thereby being suitable for a plurality of sizes of suction catheters and being capable of ensuring the sealing property of a plurality of sizes of suction catheters. In addition, the hemostatic valve provided by the embodiments of the present application has a simple structure, is easy to process and implement, and is easy to operate, thereby improving the service life and reducing the operation error rate. Therefore, the hemostatic valve provided by the embodiments of the present application can improve the adaptability, sealing property and convenience.

[0047] In specific implementation, the number of the execution components can be multiple. In an optional example, the multiple execution components can be linearly distributed along the channel, thereby the multiple execution components being capable of extruding or releasing different parts of the suction catheter, being capable of extruding the corresponding part of the suction catheter according to the demand, increasing flexibility, and being capable of extruding the suction catheter through the remaining execution components when part of the execution components are damaged, thereby multiple guaranteeing the sealing property of the hemostatic valve.

[0048] In another optional example, the plurality of execution components can be symmetrically distributed with the central axis of the channel as the axis of symmetry. In this way, the plurality of execution components can uniformly press or release the suction catheter, enhance the sealing, reduce damage to the suction catheter and its delivered components, and even after part of the execution components are damaged, the remaining execution components can still press the suction catheter, thereby multiple guarantee the sealing of the hemostatic valve.

[0049] In a specific implementation, the hemostatic valve can further include a linkage component adapted to drive the plurality of execution components to move synchronously and continuously. Specifically, the linkage component can drive the plurality of execution components to move synchronously and continuously in the direction close to the suction catheter, or in the direction away from the suction catheter. Optionally, the linkage component is located outside the housing.

[0050] In a specific implementation, in order to facilitate observation of the degree of compression or release of the execution component on the suction catheter, thereby ensuring that the effect of closing or opening the blood path can be achieved, the housing can be a transparent housing.

[0051] In a specific implementation, the angle between the channel and the through hole can be determined according to specific conditions. For example, in order to facilitate the continuous movement of the execution component, the angle between the channel and the through hole can be 90°.

[0052] In a specific implementation, the specific structure of the execution component can be set according to specific conditions, for example, the execution component can adopt a rotating structure or a retractable structure. Correspondingly, the housing is also provided with a structure matched with the execution component, so that the execution component can press or release the suction catheter.

[0053] In order for those skilled in the art to more clearly understand the concept, implementation and advantages of the technical solutions of the present specification, the following will be described with reference to the accompanying drawings.

[0054] Reference Figures 1 to 3 , wherein, Figure 1 is an exploded schematic view of a cross-sectional structure of a hemostatic valve provided in an embodiment of the present specification, Figure 2 and Figure 3 is Figure 1 is a schematic view of the state of the hemostatic valve shown in use.

[0055] Combined with reference Figures 1 to 3 In an embodiment of the present specification, the hemostatic valve M1 includes a housing 11 and an execution component 12. The housing 11 is provided with a channel 11-1 and a through hole 11-2, wherein the channel 11-1 can make the suction catheter (such as a suction tube) pass through, and the through hole 11-2 can make the suction catheter pass through and be connected to the outside of the housing 11. Figure 2 and Figure 3The suction catheter 1a passes through the through hole 11-2 which is through the channel 11-1 and has an included angle. The execution component 12 is partially accommodated in the through hole 11-2 and can continuously move in the through hole 11-2 to press or release the suction catheter.

[0056] The execution component 12 can include an elastic sub-component 12-1 and a rotating sub-component 12-2. The first end of the elastic sub-component 12-1 is connected with the rotating sub-component 12, and the second end of the elastic sub-component 12-1 is adapted to face the channel 11-1 and is in contactable connection with the suction catheter 1a. The rotating sub-component 12-2 is movably connected with the through hole 11-2 and can drive the elastic sub-component 12-1 to approach or move away from the suction catheter 1a. Thus, the limiting distance of the hemostatic valve M1 can be flexibly adjusted by the execution component 12.

[0057] According to different situations, the execution component 12 is in different positions in the shell 11. For example, when the suction catheter 1a is placed, the execution component 12 is in a position relatively far away from the channel 11-1 in the shell 11 (for details, please refer to Figure 2 ). For another example, when it is needed to close the blood path, the rotating sub-component 12-2 drives the elastic sub-component 12-1 to gradually approach and press the suction catheter 1a until the elastic sub-component 12-1 tightly presses the suction catheter 1a (for details, please refer to Figure 3 ). For still another example, when it is needed to open the blood path, the rotating sub-component 12-2 drives the elastic sub-component 12-1 to gradually move away from and release the suction catheter 1a until the elastic sub-component 12-1 completely leaves the suction catheter 1a (for details, please refer to Figure 2 and Figure 3 ).

[0058] As can be seen from the above, in the process of pressing the suction catheter, the elastic sub-component will not cause damage to the instruments (such as the suction catheter itself and the components contained in the suction catheter) entering the hemostatic valve. Through the rotating sub-component, the position of the elastic sub-component in the channel can be flexibly adjusted, so that the limiting distance of the hemostatic valve can be flexibly changed, the operation process of the execution component can be controlled, and the operation is convenient and fast.

[0059] In specific implementation, the shape of the cross section of the elastic sub-component can be determined according to specific needs and scenes. For example, the cross section of the elastic sub-component can be polygonal (for example, trapezoidal, square, triangular, Figures 1 to 3 In addition, the second end of the elastic sub-component facing the channel 11-1 can have a curvature, so that the damage to the suction catheter can be reduced and the service life of the suction catheter can be improved.

[0060] In specific embodiments, the material of the elastic subcomponent can be determined according to specific requirements and scenarios. For example, the elastic subcomponent can be made of rubber or silicone.

[0061] In specific embodiments, the shape of the cross section of the rotating subcomponent can be determined according to specific requirements and scenarios. For example, the shape of the cross section of the rotating subcomponent can be T-shaped (e.g., the rotating subcomponent 12-1) or Y-shaped. Figures 1 to 3

[0062] In specific embodiments, the material of the rotating subcomponent can be determined according to specific requirements and scenarios. For example, the rotating subcomponent can be made of plastic.

[0063] In specific embodiments, the connection between the rotating subcomponent and the through hole can be determined according to specific requirements and scenarios. For example, the rotating subcomponent and the through hole can be connected by threads.

[0064] In an optional example, as shown in FIG. 12B, the shape of the cross section of the rotating subcomponent 12-2 can be T-shaped, based on which the rotating subcomponent 12-2 can include a transverse portion and a longitudinal portion. The transverse portion of the rotating subcomponent 12-2 receives external control (e.g., manual control from a user, automatic control from other power equipment) to drive the elastic subcomponent 12-1 to rotate, the longitudinal portion of the rotating subcomponent 12-2 can be provided with threads, and the vertical portion of the rotating subcomponent 12-2 is connected with the elastic subcomponent 12-1. Figures 1 to 3 In specific embodiments, the specific structure of the housing and the specific structure of the execution component can be designed according to specific situations and specific range of motion restriction requirements, so that the housing can limit the range of motion of the execution component. The specific structure of the execution component and the specific structure of the housing are not specifically limited in this specification.

[0065] In an optional example, the execution component can include a convex fixing subcomponent arranged on the rotating subcomponent, and the housing can include a concave limiting subcomponent arranged on the edge of the outer surface of the through hole. The fixing subcomponent rotates together with the rotating subcomponent, and during the rotation process, the fixing subcomponent can move to the limiting subcomponent and be embedded with the limiting subcomponent, so that the fixing subcomponent is fixed to the limiting subcomponent, thereby limiting the rotation range of the execution component.

[0066] In another optional example, as shown in FIG. 13B, the execution component can include a convex fixing subcomponent arranged on the rotating subcomponent, and the housing can include a concave limiting subcomponent arranged on the edge of the outer surface of the through hole. The fixing subcomponent rotates together with the rotating subcomponent, and during the rotation process, the fixing subcomponent can move to the limiting subcomponent and be embedded with the limiting subcomponent, so that the fixing subcomponent is fixed to the limiting subcomponent, thereby limiting the rotation range of the execution component.

[0067] Figures 1 to 3 ​​As shown, the cross-sectional dimension of the longitudinal portion of the rotating sub-member 12-2 is smaller than that of the elastic sub-member 12-1, so that the two sides of the elastic sub-member 12-1 protrude from the two sides of the longitudinal portion of the rotating sub-member 12-2. The shell 11 further comprises a limiting sub-member 11-a arranged at the lower end of the through hole 11-2, and the cross-sectional shape of the limiting sub-member 11-a is adapted to the cross-sectional shape of the elastic sub-member 12-1.

[0068] With reference to Figure 2 and Figure 3 , the rotating member 12-2 can rotate in the through hole 11-2 and drive the elastic sub-member 12-1 to move up and down in the through hole 11-2. By means of the limiting sub-member 11-a, the limit position of the upward movement of the elastic sub-member 12-1 in the through hole 11-2 can be limited, so that the executing member 12 can no longer move upward (for details, please refer to Figure 2 , and the limiting sub-member 11-a can prevent the executing member 12 from moving out of the shell 11 during movement, thereby avoiding the operation time of restoring the executing member 12 to the shell 11. By means of the channel 11-1, the limit position of the downward movement of the elastic sub-member 12-1 in the through hole 11-2 can be limited, so that the executing member 12 can no longer move downward (for details, please refer to Figure 3 ).

[0069] In a specific implementation, the cross-sectional dimension of the transverse portion of the rotating sub-member of the executing member can be greater than the diameter of the through hole. In this way, the rotating sub-member can be prevented from rotating inwardly into the through hole, thereby avoiding the situation that the rotating sub-member is difficult to rotate outwardly, improving the convenience and stability of the rotating operation, and by limiting the movement range of the rotating sub-member through the through hole, the excessive downward movement of the elastic member can be avoided to damage the suction catheter, thereby improving the service life of the suction catheter.

[0070] With reference to Figures 4 to 6 , wherein, Figure 4 is another structure explosion schematic diagram of a hemostatic valve provided by the embodiment of the present specification, Figure 5 and Figure 6 are Figure 4 schematic diagrams of the state of the hemostatic valve in use.

[0071] With reference to Figures 4 to 6 , in the embodiment of the present specification, the hemostatic valve M2 comprises a shell 21 and an executing member 22. The shell 21 is provided with a channel 21-1 and a through hole 21-2, wherein the channel 21-1 can pass through the suction catheter (such as the suction catheter 2a in Figure 5 and Figure 6 ), and the through hole 21-2 is through the channel 21-1 and has an included angle.

[0072] The execution component 22 can include a linear subcomponent 22-1 adapted to continuously move within the through hole 21-2 to press or release the suction catheter 2a.

[0073] Thus, by the linear subcomponent, no damage is caused to the instrument (such as the suction catheter itself, components contained in the suction catheter) entering the hemostatic valve during the process of pressing the catheter sheath; and the length of the linear subcomponent in the channel can be flexibly adjusted, so that the limiting distance of the hemostatic valve can be flexibly changed, the operation process of the execution component can be controlled, and the operation is convenient and fast.

[0074] In a specific implementation, with continued reference to Figures 4 to 6 , the execution component 22 can further include a loose subcomponent 22-2 sleeved on the linear subcomponent 22-1 and adapted to release or clamp the linear subcomponent 22-1. When the loose subcomponent 22-2 releases the linear subcomponent 22-1, the linear subcomponent 22-1 can be pulled out to adjust the length of the linear subcomponent 22-1 in the through hole 21-2. When the loose subcomponent 22-2 clamps the linear subcomponent 22-1, the linear subcomponent 22-1 cannot be pulled out, so that the length of the linear subcomponent 22-1 in the through hole 21-2 is fixed. Thus, by the loose subcomponent, the linear subcomponent can be prevented from being changed at will, and the stability of the execution component is improved.

[0075] It can be understood that, for the convenience of description, the linear subcomponent can be divided into a first linear component and a second linear component according to the loose subcomponent, and the length of the first linear component and the second linear component can be changed by the loose subcomponent. For the convenience of understanding and implementation, the following is described schematically by means of the drawings.

[0076] In an optional example, as Figures 4 to 6 , the linear subcomponent 22-1 can include a first linear component 22-11 and a second linear component 22-12; the first linear component 22-11 is sleeved in the through hole 21-2 and partially accommodated in the channel 21-1, and surrounds the suction catheter 2a; the second linear component 22-12 is located outside the through hole 21-2 and is adapted to drive the first linear component 22-11 to approach or move away from the suction catheter 2a. Thus, by the execution component 22, the limiting distance of the hemostatic valve M2 can be flexibly adjusted.

[0077] The first linear member 22-11 and the second linear member 22-12 are interconnected, and their total length remains constant (i.e., the total length of the linear sub-member 22-1). However, the lengths of the first linear member 22-11 and the second linear member 22-12 may change depending on the specific circumstances. For example, when placing the suction catheter 2a, the tensioning sub-member 22-2 releases the linear sub-member 22-1. By pulling the linear sub-member 22-1, the length of the second linear member 22-12 shortens, while the length of the first linear member 22-11 lengthens. Thus, the first linear member 22-11 forms a loop within the housing 21 through which the suction catheter 2a can pass (see details [link]). Figure 4 and Figure 5 For example, when it is necessary to close the blood circuit, the tensioning component 22-2 first releases the linear component 22-1. By pulling the linear component 22-1, the length of the second linear component 22-12 increases, while the length of the first linear component 22-11 decreases. Then, the tensioning component 22-2 tightens the linear component 22-1 again. As a result, the second linear component 22-12 drives the first linear component 22-11 to gradually contract, thereby gradually approaching and squeezing the suction catheter 2a, until the first linear component 22-11 presses against the suction catheter 2a (see reference). Figure 4 and Figure 6 For example, when it is necessary to open the blood passage, the tensioning component 22-2 releases the linear component 22-1, the length of the second linear component 22-12 shortens, and the length of the first linear component 22-11 lengthens. Thus, the second linear component 22-12 causes the first linear component 22-11 to gradually enlarge, thereby moving away from and releasing the suction catheter 2a, until the first linear component 22-11 completely releases the suction catheter 2a (see reference). Figures 4 to 6 ).

[0078] In practical implementation, the specific structure of the tensioning component can be designed according to the specific circumstances to achieve the release or locking of the first and second linear components. This specification does not impose specific limitations on this.

[0079] In an optional example, such as Figure 7a The diagram shown is a cross-sectional structural schematic of a fastening component in a locked state, as provided in an embodiment of this specification. Figure 7b As shown, Figure 7a A schematic diagram of the cross-sectional structure of the provided tensioning component in the released state.

[0080] Reference Figure 7a and Figure 7b The tightening component 70 may include: a cavity 71 and at least one pressing element (such as...). Figure 7aThe cavity 71 consists of two pressing elements, namely pressing element 72 and pressing element 73. The cavity 71 is fitted onto the linear sub-component 7A. Either pressing element 72 or pressing element 73 is partially inserted into the cavity 71, and either pressing element 72 or pressing element 73 is fitted onto the linear sub-component 7A, which is adapted to release the linear sub-component 7A when it is close to the cavity 71, and to lock the linear sub-component 7A when it is away from the cavity 71.

[0081] In practical implementation, the specific structure of the cavity can be designed according to specific circumstances and requirements. The embodiments in this specification do not impose specific limitations in this regard.

[0082] For example, such as Figure 7c As shown, Figure 7a The diagram shows a cross-sectional view of the cavity of the tightening component, along with a reference. Figure 7a and Figure 7b The cavity 71 has a hollow structure, and the cavity 71 can contain multiple openings (such as...). Figure 7c It includes openings 71-a to 71-d. Among them, opening 71-a is located on the upper side of cavity 71, opening 71-b is located on the left side of cavity 71, opening 71-c is located on the right side of cavity 71, and opening 71-d is located on the lower side of cavity 71.

[0083] Openings 71-a and 71-d allow the linear sub-component 7A to pass through; opening 71-b allows a portion of the pressing member 73 to pass through and enter the cavity 71; opening 71-c is adapted to allow a portion of the pressing member 72 to pass through and enter the cavity 71.

[0084] In practical implementation, the specific structure of the pressing component can be designed according to specific circumstances and requirements. The embodiments in this specification do not impose specific limitations on this.

[0085] For example, the pressing element may include: a pressing body and a resetting element; wherein: the pressing body is partially inserted into the cavity, and the pressing element is sleeved on the linear sub-component, adapted to move closer to the cavity and release the linear sub-component; the resetting element is connected to the cavity and the pressing body respectively, adapted to drive the pressing body away from the cavity to lock the linear sub-component.

[0086] In practical implementation, the specific structure of the pressing body can be designed according to specific circumstances and requirements, and the specific connection relationships between the reset element and the cavity and the pressing body can be determined based on the specific structure of the pressing body. This specification does not impose specific limitations on the specific structure of the pressing body or the specific connection relationships between the reset element and the cavity and the pressing body in the embodiments.

[0087] In an optional example, continue to refer to Figures 7a to 7cSince the pressing member 72 and the pressing member 73 have the same structure, the pressing member 72 is taken as an example for detailed description. The pressing member 72 comprises a pressing body 72-1 and a reset member 72-2. As shown in Figure 7d Figure 7a A schematic view of a cross-sectional structure of a pressing portion in a pressing member of the elastic sub-member.

[0088] In combination with reference to Figures 7a to 7d , the pressing body 72-1 can comprise a pressing portion 72-11 and a penetrating portion 72-12, wherein the pressing portion 72-11 is connected with the penetrating portion 72-12 and is adapted to receive pressure from outside; and the penetrating portion 72-12 is at least partially penetrated in the cavity 71. Further, the penetrating portion 72-12 can comprise an opening 72-a, an opening 72-b and a hollow chamber 72-c. The hollow chamber 72-c is in communication with the opening 72-a, and the hollow chamber 72-c is connected with the pressing portion 72-11 and is adapted to accommodate the reset member 72-2, and to fix one end of the reset member 72-2 with the pressing portion 72-11, and to fix the other end of the reset member 72-2 with the cavity 71 through the opening 72-a; and the opening 72-b penetrates through the penetrating portion 72-12 and is adapted to allow the linear sub-member 7A to pass through.

[0089] After the pressing portion 72-11 is subjected to external pressure, the pressing portion 72-11 drives the penetrating portion 72-12 to approach the cavity 71, and causes the reset member 72-2 to deform; after the external pressure is removed, the reset member 72-2 generates a reverse force due to the deformation, and drives the penetrating portion 72-12 to drive the pressing portion 72-11 to move away from the cavity 71.

[0090] It can be understood that, according to the above description of the pressing member 72, the specific structure and connection relationship of the pressing member 73 can be obtained, which will not be described herein again.

[0091] With the above scheme, since the reset member is arranged inside the pressing member, on the one hand, the spacing between the opening for the linear sub-member to pass through in the pressing member and the cavity can be further reduced, thereby enhancing the clamping effect; on the other hand, when there are multiple pressing members, the spacing between the multiple pressing members in the direction of the linear sub-member passing through the cavity can be further reduced, thereby enhancing the clamping effect.

[0092] In another optional example, as shown in Figure 8a and 8b , wherein, Figure 8a is a schematic view of a cross-sectional structure of the elastic sub-member in a clamping state according to an embodiment of the present specification, Figure 8b is Figure 8a a schematic view of a cross-sectional structure of the elastic sub-member in a release state according to the present specification.​

[0093] With reference to Figure 8a and Figure 8b , the elastic sub-member 80 can include a cavity 81 and at least one pressing member (such as Figure 8a two pressing members, i.e., a pressing member 82 and a pressing member 83. The specific structure and implementation principle of the cavity 81 can be referred to the above related part, which will not be described here.

[0094] Since the pressing member 82 and the pressing member 83 have the same structure, the pressing member 82 will be described in detail below. The pressing member 82 includes a pressing body 82-1 and a reset member 82-2.

[0095] The pressing body 82-1 can include a pressing portion 82-11 and a penetrating portion 82-12. The pressing portion 82-11 is connected with the penetrating portion 82-12 and is adapted to receive pressure from the outside; the penetrating portion 82-12 is at least partially penetrated in the cavity 81. Further, the penetrating portion 82-12 can include an opening 82-a, which penetrates through the penetrating portion 82-12 and is adapted to pass through the linear sub-member 8A.

[0096] The reset member 82-2 is sleeved on one end of the penetrating portion 82-12 located in the cavity 81, and one end of the reset member 82-2 is fixedly connected with the penetrating portion 82-12, and the other end of the reset member 82-2 is fixedly connected with the cavity 81.

[0097] After the pressing portion 82-11 is subjected to external pressure, the pressing portion 82-11 drives the penetrating portion 82-12 to approach the cavity 81, and the reset member 82-2 is deformed; after the external pressure is removed, the reset member 82-2 generates a reverse force to drive the penetrating portion 82-12 to drive the pressing portion 82-11 to move away from the cavity 81.

[0098] It can be understood that according to the description of the pressing member 82 above, the specific structure and connection relationship of the pressing member 83 can be obtained, which will not be described here.

[0099] By using the above scheme, the structure of the elastic sub-member is simple, easy to implement, and convenient to maintain.

[0100] In specific implementation, the specific type of the reset member can be determined according to specific circumstances and requirements, for example, the reset member can be a spring. The present embodiment does not make specific limitation thereto.

[0101] In a specific implementation, the number of the execution components can be multiple, and the multiple execution components are linearly distributed along the channel, or the multiple execution components are symmetrically distributed with the channel as the symmetric axis. The following is described illustratively through specific examples.

[0102] In an optional example, as shown in FIG. 4, a structural schematic diagram of another hemostatic valve provided by the embodiments of the present application is shown. The hemostatic valve M3 includes a shell 31 and two execution components 321 and 322. The specific structure and implementation principle of the shell 31, the execution component 321 and the execution component 322 can refer to the related parts described above, and will not be described here again. In the embodiments of the present application, the execution component 321 and the execution component 322 are symmetrically distributed with the center axis of the channel of the shell 31 as the symmetric axis. Figure 9

[0103] Therefore, the multiple execution components can uniformly squeeze or release the suction catheter, enhance the sealing property, reduce the damage to the suction catheter and the components for conveying the suction catheter, and when some of the execution components are damaged, the remaining execution components can still squeeze the suction catheter, thereby multiple guaranteeing the sealing property of the hemostatic valve.

[0104] In a specific implementation, when the hemostatic valve includes multiple execution components, the multiple execution components can be synchronously and continuously driven by a linkage component. The following is described illustratively through specific examples.

[0105] In an optional example, as shown in FIG. 5, a structural schematic diagram of another hemostatic valve provided by the embodiments of the present application is shown. The hemostatic valve M4 includes a shell 41 and two execution components, i.e., an execution component 421 and an execution component 422. The specific structure and implementation principle of the shell 41, the execution component 421 and the execution component 422 can refer to the related parts described above, and will not be described here again. In the embodiments of the present application, the M4 further includes a linkage component 43 located outside the shell 41 and connected with the execution component 421 and the execution component 422 respectively, so as to synchronously and continuously drive the multiple execution components 421 and 422. Figure 10 It can be understood that the hemostatic valve provided by the embodiments of the present application can be adaptively selected and / or deformed according to specific application scenarios and requirements. For example, the number of some components of the hemostatic valve is changed; for another example, the size of some components of the hemostatic valve is adjusted; for another example, some components of the hemostatic valve are replaced with the same components, etc. Based on this, more implementation schemes of the hemostatic valve can be extended, and the embodiments of the present application do not limit these extended schemes.

[0106]

[0107] ​​It should be noted that in the description of the present specification, the terms "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "connection" and the like indicate the orientation or structural relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present specification and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. The terms in the present specification can be understood according to different application scenarios. For example, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper" of the first feature to the second feature can include that the first feature is directly above and obliquely above the second feature, or only indicates that the height of the first feature is higher than that of the second feature. The "lower" of the first feature to the second feature can include that the first feature is directly below and obliquely below the second feature, or only indicates that the height of the first feature is less than that of the second feature. For those of ordinary skill in the art, the specific meanings of the above terms in the present specification can be understood according to specific circumstances.

[0108] In addition, the "one embodiment" or "embodiment" referred to in the present specification means that a specific feature, structure or characteristic can be included in at least one implementation of the present specification. And in the description of the present specification, the terms "first", "second" and the like are only used for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can be explicitly or implicitly included one or more of the features. Moreover, the terms "first", "second" and the like are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or represent importance. It can be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present specification described herein can be implemented in an order other than those illustrated or described herein.

[0109] Although the embodiments of the present specification are disclosed as above, the present specification is not limited thereto. Any person skilled in the art can make various modifications and changes without departing from the spirit and scope of the present specification, and therefore the protection scope of the present specification should be subject to the scope defined by the claims.

Claims

1. A hemostatic valve characterized by, The application relates to a shell, a channel and a through hole, wherein the channel is suitable for passing a suction conduit, the through hole is through the channel and has an included angle; an execution component comprises a linear sub-component and a loose sub-component, wherein the linear sub-component is partially accommodated in the through hole and is suitable for continuous movement in the through hole to squeeze or release the suction conduit; the loose sub-component is sleeved on the linear sub-component and is suitable for releasing or clamping the linear sub-component; the linear sub-component comprises a first linear component and a second linear component, the first linear component is arranged in the through hole and is partially accommodated in the channel and surrounds the suction conduit; the second linear component is located outside the through hole and is suitable for driving the first linear component to approach or move away from the suction conduit; the linear sub-component and the loose sub-component are configured to be pulled when the linear sub-component is released by the loose sub-component, so that the length of the linear sub-component in the through hole is adjusted; when the linear sub-component is clamped by the loose sub-component, the linear sub-component cannot be pulled, so that the length of the linear sub-component in the through hole is fixed. The number of the execution components is multiple, the multiple execution components are linearly distributed along the channel, or the multiple execution components are symmetrically distributed with the central axis of the channel as the axis of symmetry. The shell is a transparent shell. The loose sub-component comprises a cavity and a pressing component; wherein the cavity is sleeved on the linear sub-component; the pressing component is partially arranged in the cavity and is sleeved on the linear sub-component and is suitable for releasing the linear sub-component when approaching the cavity and clamping the linear sub-component when moving away from the cavity. The pressing component comprises a pressing body and a reset component; wherein the pressing body is partially arranged in the cavity and is sleeved on the linear sub-component and is suitable for approaching the cavity and releasing the linear sub-component; the reset component is connected with the cavity and the pressing body respectively and is suitable for driving the pressing body to move away from the cavity to clamp the linear sub-component.

2. The hemostatic valve of claim 1, wherein, ​ 3. The hemostatic valve of claim 1, wherein, ​ 4. The hemostatic valve of claim 1, wherein, ​ ​ ​ 5. The hemostatic valve of claim 4, wherein, ​ ​ ​

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