CN220309577U - Flow stop clip and surgical accessory assembly - Google Patents

Abstract

The application relates to a flow stop clip, comprising: the annular body is provided with a first end and a second end which are arranged along the circumferential direction, and the inner diameter of the annular body can be adjusted so that the annular body has a clamping state and a non-clamping state; a first elastic arm, one end of which is connected with the annular body, and the first elastic arm is provided with a third end far away from the annular body; the second elastic arm is provided with a fourth end which is far away from the annular body; wherein the third and fourth ends are movable toward and away from each other to change an inner diameter of the annular body, and are further movable relative to each other to maintain the annular body in the clamped state. The flow stopping clamp is stable in form and has a good clamping effect.

Description

Flow stop clip and surgical accessory assembly

Technical Field

The application relates to the technical field of artificial hearts, in particular to a flow stopping clamp.

Background

In the artificial heart operation process, an artificial blood vessel and a puncture sheath are required to be matched, one end of the artificial blood vessel is connected with a blood vessel of a patient, the other end of the artificial blood vessel is exposed outside the patient, and the puncture sheath is inserted from the other end of the artificial blood vessel so as to guide the artificial heart in the follow-up process. Usually, a flow stopping clamp is required to be arranged at the joint of the puncture sheath and the artificial blood vessel to tightly seal the puncture sheath and the artificial blood vessel, so that blood is prevented from penetrating between the puncture sheath and the artificial blood vessel, however, the traditional flow stopping clamp is easy to loosen, and the clamping effect is poor.

Disclosure of Invention

Based on the above, it is necessary to provide a flow stop clip and a surgical auxiliary assembly which are stable in form and have a good clamping effect, aiming at the problem that the flow stop clip cannot adjust the clamping force by one hand.

A flow stop clip comprising:

the annular body is provided with a first end and a second end which are arranged along the circumferential direction, and the inner diameter of the annular body can be adjusted so that the annular body has a clamping state and a non-clamping state;

a first elastic arm, one end of which is connected with the annular body, and the first elastic arm is provided with a third end far away from the annular body; the method comprises the steps of,

one end of the second elastic arm is connected with the annular body, and the second elastic arm is provided with a fourth end far away from the annular body;

wherein the third and fourth ends are movable toward and away from each other to change an inner diameter of the annular body, and are further movable relative to each other to maintain the annular body in the clamped state.

Optionally, the second elastic arm includes a first side and a second side disposed away from each other; the first side surface is tangential to the peripheral wall of the annular body, and the second side surface is connected to the end surface of the second end; in the clamped state, the first end can overlap inside the second end, and a portion where the first end and the second end overlap is located between the first side face and the second side face.

Optionally, a thickness of an end of the second elastic arm near the annular body is greater than a thickness of the fourth end, the thickness being a distance between the first side and the second side.

Optionally, the second side is an arc-shaped concave surface recessed toward the first side.

Optionally, the inner peripheral wall of the annular body is provided with a yielding gap, the yielding gap penetrates through the end face of the second end, and in the clamping state, the first end can be located in the yielding gap and overlapped with the second end.

Optionally, the relief notch is located between the first side and the second side.

Optionally, the depth of the relief notch along the radial direction of the annular body is equal to the thickness of the first end along the radial direction of the annular body.

Optionally, the first elastic arm includes a first section and a second section that are connected to each other, one end of the first section away from the second section is connected to the annular body, and one end of the second section away from the first section is the third end; the second section and the first section are arranged at an included angle, and the second section extends towards the direction close to the second elastic arm; the second resilient arm is disposed between the second segment and the annular body.

Optionally, one of the third end and the fourth end is provided with a first clamping portion, the other one is provided with a plurality of second clamping portions, and when the first clamping portions are clamped to different second clamping portions, the annular body has different inner diameters.

Optionally, the third end is provided with an operating portion, and the operating portion protrudes away from the annular body relative to the second section.

The embodiment of the application also provides a surgical auxiliary assembly, which comprises:

a vascular prosthesis connectable to a patient's blood vessel;

the puncture sheath comprises a sheath tube and a hemostatic valve which is arranged in the sheath tube and seals the sheath tube, and the sheath tube is inserted into the artificial blood vessel; the method comprises the steps of,

and the annular body of the flow stopping clamp surrounds the artificial blood vessel, and can clamp the artificial blood vessel and the sheath tube when the annular body is in the clamping state.

By adopting the technical scheme, after the acting force is applied to the first elastic arm and the second elastic arm, the first elastic arm and the second elastic arm can generate elastic deformation, so that the third end and the fourth end can be mutually close to or far away from each other, and the inner diameter of the annular body can be changed. Therefore, when the annular body is sleeved on the artificial blood vessel, the annular body can be clamped on the outer peripheral wall of the artificial blood vessel by adjusting the inner diameter of the annular body, so that the artificial blood vessel is tightly attached to the puncture sheath in the artificial blood vessel, the sealing attachment between the inner peripheral wall of the artificial blood vessel and the outer peripheral wall of the puncture sheath is realized, and the bleeding phenomenon is prevented.

Meanwhile, when in the clamped state, the free ends (i.e., the third ends) of the first elastic arms and the free ends (i.e., the fourth ends) of the second elastic arms are fixed to each other, which means that the free ends of the first elastic arms and the second elastic arms are gathered together. On the one hand, after the two ends are mutually gathered together to enable the whole volume to be smaller, the possibility of contact collision by external objects or people can be reduced, and therefore the risk of separation of the two ends is reduced. On the other hand, compared with the traditional mode that two ends are far away from each other and are not contacted, the two ends are mutually fixed and gathered together to achieve the superposition effect, so that the form is more stable, and the clamping effect is better. In yet another aspect, occupation of surrounding space may be reduced, for example, transportation may be facilitated.

Drawings

FIG. 1 is a schematic illustration of an exemplary embodiment of a connection between a flow stop clip and a puncture sheath and a vascular prosthesis.

Fig. 2 is a schematic perspective view of a flow stop clip according to an embodiment.

Fig. 3 is a schematic plan view of an embodiment of a flow stop clip in an unlocked state.

Fig. 4 is a schematic plan view of a flow stop clip according to an embodiment in a locked state.

Fig. 5 is a schematic plan view of the stopper clamp in another locked state according to an embodiment.

FIG. 6 is a schematic diagram of a structure of a flow stop clip according to an embodiment in another view.

FIG. 7 is a schematic diagram of a structure of a flow stop clip according to an embodiment in another view.

FIG. 8 is a schematic diagram of a structure of a flow stop clip according to an embodiment in another view.

Fig. 9 is a schematic structural view of a flow stop clip according to an embodiment in another view.

FIG. 10 is a schematic plan view of a flow stop clip according to an embodiment.

Description of the reference numerals:

a flow stop clip, 1; puncture sheath, 2; sheath tube, 21; a hemostatic valve 22; artificial blood vessels, 3; a distal end 31; a proximal end, 32;

a first elastic arm 100; a second elastic arm 200; an annular body 300;

a first section, 101; a first non-slip structure, 102; a second anti-slip structure 103; an operation unit 110; a second section 120; a third end 121; a guide surface 122; a clamping groove 123; a second clamping part 124; an arcuate segment 130; a first end 140; a first side 201; a third non-slip structure, 202; a glue reducing hole 203; fourth ends, 210; a first clamping part 211; a second end 220; a yielding gap 221; a second side 222; and a stop hole 301.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

In the artificial heart operation, the artificial blood vessel 3 and the puncture sheath 2 are used in combination, as shown in fig. 1, one end of the artificial blood vessel 3 is connected with a blood vessel of a patient, the other end of the artificial blood vessel 3 is exposed outside the patient, and the puncture sheath 2 is inserted from the other end of the artificial blood vessel 3 to guide the artificial heart in the following steps. However, the puncture sheath 2 cannot completely seal the other end of the artificial blood vessel 3, resulting in easy penetration of blood from between the puncture sheath 2 and the artificial blood vessel 3.

Based on this, the present embodiment provides a flow stop clip 1 to be able to clamp a puncture sheath 2 and an artificial blood vessel 3, avoiding blood permeation. Referring to fig. 2 to 5, the flow stop clip 1 provided in the embodiment of the present application includes a first elastic arm 100, a second elastic arm 200, and an annular body 300, wherein the annular body 300 has a first end 140 and a second end 220 disposed along a circumferential direction, and an inner diameter of the annular body 300 is adjustable, so that the annular body 300 has a clamped state and an unclamped state; one end of the first elastic arm 100 is connected to the annular body 300 at a position close to the first end 140, and the first elastic arm 100 has a third end 121 far from the first end 140; one end of the second elastic arm 200 is connected to the annular body 300 at a position close to the second end 220, and the second elastic arm 200 has a fourth end 210 disposed away from the second end 220. Wherein the third end 121 and the fourth end 210 can be moved toward or away from each other to move the first end 140 and the second end 220 toward or away from each other to change the inner diameter of the annular body 300. Also, the third end 121 and the fourth end 210 can be fixed to each other to maintain the annular body 300 in a clamped state, such that the annular body 300 is maintained at a fixed inner diameter.

In this embodiment, after the acting force is applied to the first elastic arm 100 and the second elastic arm 200, the first elastic arm 100 and the second elastic arm 200 can generate elastic deformation, so that the third end 121 and the fourth end 210 can be close to or far away from each other, and at the same time, the third end 121 and the fourth end 210 can drive the two ends of the annular body 300, that is, the first end 140 and the second end 220, to be close to or far away from each other, so that the inner diameter of the annular body 300 can be changed. Therefore, when the annular body 300 is sleeved on the artificial blood vessel 3, the annular body 300 can be clamped on the outer peripheral wall of the artificial blood vessel 3 by adjusting the inner diameter of the annular body 300, so that the artificial blood vessel 3 is tightly attached to the puncture sheath 2 positioned in the artificial blood vessel 3, the sealing attachment between the inner peripheral wall of the artificial blood vessel 3 and the outer peripheral wall of the puncture sheath 2 is realized, and the bleeding phenomenon is prevented.

Meanwhile, when in the clamped state, the free ends of the first elastic arm 100 (i.e., the third end 121) and the second elastic arm 200 (i.e., the fourth end 210) are fixed to each other, meaning that the free ends of the first elastic arm 100 and the second elastic arm 200 are gathered together. On the one hand, occupation of surrounding space can be reduced, and transportation can be facilitated, for example. On the other hand, after the two ends are mutually gathered together to enable the whole volume to be smaller, the possibility of contact collision by external objects or people can be reduced, and therefore the risk of separation of the two ends is reduced. On the other hand, compared with the traditional mode that the two ends are far away from each other and are not contacted, the two ends are mutually fixed and gathered together to achieve the superposition effect, so that the form is more stable, and the clamping effect is better.

It should be noted that the fact that the third end 121 and the fourth end 210 can be close to or far from each other may mean that both the third end 121 and the fourth end 210 move, or that one of the third end 121 and the fourth end 210 does not move, and only the other moves.

The annular body 300 having circumferentially disposed first and second ends 140, 220 means that the annular body 300 is not a complete closed loop structure, but is broken at the location of the first and second ends 140, 220, i.e., the annular body 300 is a split ring. The inner hole formed by encircling the annular body 300 is used for clamping the artificial blood vessel 3, and the change of the inner diameter of the annular body 300 means that the diameter of the inner hole changes.

In order to facilitate holding and homogenizing stress, in one embodiment, the first elastic arm 100 and the second elastic arm 200 are tangent to the peripheral wall of the annular body 300, so that the structure formed by the first elastic arm 100, the second elastic arm 200 and the annular body 300 is smoother, not only is the holding on the first elastic arm 100 and the second elastic arm 200 convenient, but also the stress can be homogenized, the stress concentration at the joint of the first elastic arm 100, the second elastic arm 200 and the annular body 300 is reduced, and the service life of the flow stop clamp 1 is prolonged.

In some embodiments, the first elastic arm 100 includes a first segment 101 and a second segment 120 that are connected to each other, where an end of the first segment 101 away from the second segment 120 is connected to the annular body 300 near the first end 140, and an end of the second segment 120 away from the first segment 101 is the third end 121. The second section 120 is disposed at an angle with respect to the first section 101, and the second section 120 extends in a direction approaching the second elastic arm 200. The second resilient arm 200 is located on the side of the second segment 120 facing the annular body 300. For the conventional protruding of the second elastic arm 200 out of the first elastic arm 100 in a direction away from the ring-shaped body 300, since the fourth end 210 of the second elastic arm 200 is not shielded by the first elastic arm 100, it is easy to collide with an external object to be separated from the fixation with the first elastic arm 100. However, in the embodiment of the present application, the first elastic arm 100 is generally "7" shaped, and the fourth end 210 of the second elastic arm 200 does not extend beyond the range of the first elastic arm 100, and the entire second elastic arm 200 is always located between the second segment 120 and the annular body 300. Thus, after the third end 121 and the fourth end 210 are fixed to each other so that the annular body 300 is in the clamped state, the free end (i.e. the third end 121) of the first elastic arm 100 and the free end (i.e. the fourth end 210) of the second elastic arm 200 are gathered together, so that the fourth end 210 of the second elastic arm 200 can be prevented from being collided, the risk that the first elastic arm 100 and the second elastic arm 200 are separated from each other is reduced, and the annular body 300 maintains the clasping state of the vascular prosthesis 3.

Referring to fig. 2 and fig. 9 in combination, in one embodiment, the third end 121 of the first elastic arm 100 is provided with an operation portion 110, the operation portion 110 protrudes away from the annular body 300 relative to the second section 120, and the fourth end 210 can be clamped with a side of the second section 120 facing the annular body 300. When the stop clip 1 needs to be unlocked, the middle finger of the right hand can be abutted against the first section 101 of the first elastic arm 100, then the thumb of the right hand is abutted against the operating portion 110, and the operating portion 110 is abutted against the direction away from the annular body 300, so that the third end 121 and the fourth end 210 are disengaged from the clamping connection, unlocking is realized, and the annular body 300 can be in a non-clamping state. When the inner diameter of the stop clip 1 needs to be reduced, the middle finger of the right hand can be pressed against the first section 101 of the first elastic arm 100, the thumb of the right hand acts on the second elastic arm 200, and the second elastic arm 200 is pressed towards the direction of the first section 101, so that the fourth end 210 of the second elastic arm 200 moves towards the side where the first section 101 is located, and is blocked into the blocking groove near the first section 101.

In the above, the arrangement of the operation portion 110 provides a position for applying force, which facilitates the one-hand operation of the stopper clip 1.

When the clamping force of the flow stopping clamp 1 needs to be adjusted, the flow stopping clamp 1 can be held on the first elastic arm 100 and the second elastic arm 200 of the flow stopping clamp 1 by one hand, the second elastic arm 200 is pressed by one finger, so that the fourth end 210 of the second elastic arm 200 moves towards the third end 121 of the first elastic arm 100, and further the first end 140 and the second end 220 of the annular body 300 are overlapped to change the inner diameter of the annular body 300, thereby realizing the adjustment of the clamping force of the flow stopping clamp 1 on the puncture sheath and the artificial blood vessel 3, ensuring the fastening and sealing effects and preventing blood from flowing out from the penetration sheath and the artificial blood vessel 3. After the third end 121 and the fourth end 210 move into place, the third end 121 and the fourth end 210 are locked to restrict movement, so as to lock the first elastic arm 100 and the second elastic arm 200.

Referring to fig. 2 in combination, in order to improve the stress condition of the first elastic arm 100 and improve the service life of the flow stop clip 1, in one embodiment, the first elastic arm 100 further includes an arc-shaped section 130, and the first section 101 and the second section 120 are connected in a smooth transition manner through the arc-shaped section 130, so that the arc-shaped section 130 can be used to reduce stress concentration of the first elastic arm 100 and reduce the risk of breakage.

Referring again to fig. 3 in combination, to enhance the structural strength of the flow stop clip 1, the second elastic arm 200 includes a first side 201 and a second side 222 disposed away from each other, the first side 201 being tangential to the peripheral wall of the annular body 300, and the second side 222 being connected to an end face of the second end 220. In the clamped state, the first end 140 can overlap inside the second end 220, and the overlapping portion of the first end 140 and the second end 220 is located between the first side 201 and the second side 222. Specifically, by arranging the first side 201 of the second elastic arm 200 tangentially to the peripheral wall of the annular body 300, the end face of the second side 222 connected to the second end 220 is arranged in a manner that corresponds to an increase in thickness and strength in the radial direction of the annular body 300 at the second end 220, reducing the risk of deformation fracture. When the first end 140 of the annular body 300 is overlapped inside the second end 220, the second end 220 is subjected to a force of pressing radially and outwardly along the annular body 300, and the thicker second end 220 deforms relatively less, which in turn has a stronger force of pressing the first end 140 into the annular body 300 to more tightly hold the vascular prosthesis 3. Moreover, the overlapped portion of the first end 140 and the second end 220 is located between the first side 201 and the second side 222, so that the overlapped portion is always located at a position with a larger thickness and stronger strength, which not only can well ensure the shape of the annular body 300, but also can avoid deformation and fracture of the second end 220.

Referring to fig. 10 in combination, in some embodiments, a thickness B1 of the second elastic arm 200 near one end of the annular body 300 is greater than a thickness B2 of the fourth end 210, which refers to a distance between the first side 201 and the second side 222. Since the thickness B1 of the second elastic arm 200 near the end of the ring-shaped body 300 is larger, the thickness and strength of the second end 220 of the ring-shaped body 300 can be better ensured, and the risk of breakage is reduced. Because the thickness B2 of the fourth end 210 of the second elastic arm 200 is smaller, the second elastic arm 200 is deformed at a position close to the fourth end 210, so as to facilitate the engagement between the first elastic arm 100 and the second elastic arm 200.

Alternatively, in one embodiment, the second side 222 is an arcuate concave surface recessed toward the first side 201. Therefore, the middle position of the second elastic arm 200 can also have a smaller thickness, which is beneficial to the deformation of the second elastic arm 200. Of course, in other embodiments, the second side 222 may be a flat surface.

Referring to fig. 3 to 5 in combination, in one embodiment, a relief notch 221 is disposed at a position corresponding to the second end 220 on the inner peripheral wall of the annular body 300, and the relief notch 221 extends to an end surface penetrating through the second end 220, so that the first end 140 can enter the relief notch 221 from an opening formed on the end surface of the second end 220 of the relief notch 221 to overlap the second end 220. In the clamped state, when the fourth end 210 and the third end 121 are locked, the first end 140 is located in the yielding gap 221 and abuts against the inner side of the second end 220 of the annular body 300. The setting of the abdication notch 221 can accommodate the first end 140 when the first end 140 and the second end 220 overlap, so that the first end 140 is reduced or prevented from protruding out of the inner circumferential wall of the annular body 300, and the annular body 300 forms a smoother inner circumferential wall, which is beneficial to clamping the various positions of the artificial blood vessel 3.

Further, the relief notch 221 is located between the first side 201 and the second side 222. Since the annular body 300 has a larger thickness at the position between the first side 201 and the second side 222, the relief notch 221 is opened at the position with the larger thickness, and the phenomenon that the thickness is too thin to break at the position is avoided.

Referring to fig. 10 in combination, in the present embodiment, the depth T1 of the relief notch 221 along the radial direction of the annular body 300 is equal to the thickness T2 of the first end 140 along the radial direction of the annular body 300, so that when overlapping occurs, the first end 140 does not protrude from the inner peripheral wall of the entire annular body 300, thereby forming a complete or circumferentially approximately uniform circular hole, so that the pressing force of the annular body 300 on the vascular prosthesis 3 is more uniform, and damage to the vascular prosthesis 3 is avoided. Of course, in other embodiments, the depth T1 of the relief notch 221 along the radial direction of the annular body 300 may be slightly greater than or slightly less than the thickness T2 of the first end 140 along the radial direction of the annular body 300.

The annular body 300 encloses to form a flow stopping hole 301, as shown in fig. 3, when the first end 140 does not enter the yielding notch 221, the flow stopping hole 301 is not closed in the circumferential direction, and when the third end 121 and the fourth end 210 are not fixed, the flow stopping clip 1 is in a non-clamping state; as shown in fig. 4 and 5, when the first end 140 enters the relief notch 221 and overlaps the second end 220, the flow stop hole 301 is circumferentially closed, and the flow stop clip 1 may be in a clamped state, so as to tightly hold the vascular prosthesis 3. According to the artificial blood vessel 3 with different outer diameters, when the artificial blood vessel is in a clamping state, the clamping position of the third end 121 and the fourth end 210 can be shown in figure 4 or figure 5,

in one embodiment, the second elastic arm 200 further includes a glue reducing hole 203, the glue reducing hole 203 is disposed at one end of the second elastic arm 200 near the second end 220, the glue reducing hole 203 is a triangular hole or a near-triangular hole, two inner corners of the glue reducing hole 203 are disposed near the second end 220, and the other inner corners of the glue reducing hole 203 are disposed far from the annular body 300 relative to the other two inner corners along the circumferential direction of the annular body 300.

In one embodiment, one of the third end 121 and the fourth end 210 is provided with a first clamping portion 211, and the other one is provided with a plurality of second clamping portions 124, when the first clamping portion 211 is clamped to a different second clamping portion 124, the annular body 300 has different inner diameters, so as to realize adjustment of clamping force, so as to adapt to the vascular prostheses 3 of different specifications. In this embodiment, the first clamping portion 211 may be disposed at the fourth end 210, and the second clamping portion 124 may be disposed at the third end 121.

In some embodiments, the first clamping portion 211 is a clamping protrusion, and the second clamping portion 124 is a clamping groove. The locking protrusion can be locked into the locking groove, and at this time, the fourth end 210 and the third end 121 are locked to each other, so as to prevent the fourth end 210 from slipping.

In some embodiments, the first clamping portion 211 is a clamping protrusion, the second clamping portion 124 is also a clamping protrusion, and the second clamping portion 124 extends obliquely from the second section 120 toward the direction close to the first section 101, so that a structure similar to the clamping groove 123 is formed between the second clamping portion 124 and the second section 120, and the first clamping portion 211 can be clamped into the clamping groove 123 and abutted against the second clamping portion 124, and the second clamping portion 124 can limit the first clamping portion 211 from bouncing back (toward the direction far away from the first section 101).

Optionally, the second clamping portion 124 further includes a guiding surface 122, where the guiding surface 122 is disposed on a side of the second clamping portion 124 facing away from the clamping groove 123, for guiding the first clamping portion 211.

In other embodiments, one of the third end 121 and the fourth end 210 is provided with a latch, and the other is provided with a receptacle, with which the latch is connected to lock the fourth end 210 and the third end 121 to each other.

In still other embodiments, one of the third end 121 and the fourth end 210 is provided with a screw, and the other is provided with a screw hole, and the fourth end 210 and the third end 121 are locked to each other by the screw being connected to the screw hole.

In one embodiment, referring to fig. 6 to 8 in combination, the first elastic arm 100 further includes a first anti-slip structure 102 and a second anti-slip structure 103, the first anti-slip structure 102 is disposed on a side of the first segment 101 away from the second elastic arm 200, and the second anti-slip structure 103 is disposed on the operating portion 110.

The second elastic arm 200 further includes a third anti-slip structure 202, where the third anti-slip structure 202 is disposed on a side of the second elastic arm 200 away from the first elastic arm 100, and the first anti-slip structure 102, the second anti-slip structure 103, and the third anti-slip structure 202 are used to play an anti-slip role when operated by one hand, and when the grip clip 1 is held by one hand, the thumb can be abutted with the first anti-slip structure 102 of the operation portion 110, or abutted with the third anti-slip structure 202 on the second elastic arm 200, and the middle finger can be abutted with the first anti-slip structure 102 on the first section 101. Optionally, the first anti-slip structure 102, the second anti-slip structure 103, and the third anti-slip structure 202 are ribs or bumps.

The present application also provides a surgical accessory assembly, as shown in fig. 1 and 2, comprising a vascular prosthesis 3, a puncture sheath 2 and a flow stop clip 1 as described above, the vascular prosthesis 3 being capable of being connected to a patient's blood vessel; the puncture sheath 2 includes a sheath tube 21 and a hemostatic valve 22 provided in the sheath tube 21 and sealing the sheath tube 21, and the sheath tube 21 is inserted into the artificial blood vessel 3. The annular body 300 of the stopper clamp 1 surrounds the vascular prosthesis 3 and is capable of clamping or unclamping the vascular prosthesis 3 from the sheath 21. Specifically, when the annular body 300 is in the clamped state, the artificial blood vessel 3 and the sheath 21 can be clamped; the prosthesis 3 can be withdrawn from the ring body 300 when the ring body 300 is in the non-clamped state.

The clamped state and the unclamped state described in the embodiments of the present application refer to a state in which the annular body 300 is clamped with respect to the artificial blood vessel 3, that is, when the annular body 300 tightly surrounds the artificial blood vessel 3 such that the inner circumferential wall of the artificial blood vessel 3 is in sealing contact with the outer circumferential wall of the sheath 21. When there is a gap between the annular body 300 and the artificial blood vessel 3 or a state close to a state where there is a gap so that the inner peripheral wall of the artificial blood vessel 3 is not in sealing contact with the outer peripheral wall of the sheath 21, the annular body 300 is in a non-clamped state.

Specifically, vascular prosthesis 3 includes a proximal end 32 and a distal end 31, distal end 31 being connected to a patient's blood vessel, proximal end 32 being located outside the patient's body. The hemostatic valve 22 is disposed proximate the proximal end 32 and the hemostatic clip 1 is disposed between the distal end 31 of the vascular prosthesis 3 and the hemostatic valve 22. Therefore, the middle of the sheath 21 is sealed by the hemostatic valve 22, and the outer peripheral wall of the sheath 21 is clamped and sealed with the inner peripheral wall of the artificial blood vessel 3 by the stopper clamp 1.

The hemostatic valve 22 has a first configuration in which the sheath 21 is sealed, and a second configuration in which the blood supply pump passes through the sheath 21, in which the hemostatic valve 22 is still capable of sealing the blood pump from flowing between the blood pump and the hemostatic valve 22.

Alternatively, the hemostatic valve 22 may be a silicone valve or other structure capable of performing a sealing function. For example, the hemostatic valve 22 may also be an electrically or magnetically operated valve.

The hemostatic valve 22 has an elastic structure, the hemostatic valve 22 is provided with a slit, the slit is very small and can be almost ignored, and when the hemostatic valve 22 is not extruded by external force, the hemostatic valve 22 still keeps sealing at the slit, i.e. liquid and gas cannot pass through the slit. When the blood pump is required to be guided into the body, the blood pump is provided with a cutting seam, the cutting seam is enlarged, and at the moment, the hemostatic valve 22 still tightly surrounds the blood pump at the cutting seam to play a role in sealing. When the blood pump is withdrawn from the hemostatic valve 22, the slit returns to its original state, preventing the passage of gases and liquids.

Alternatively, the slit may be in the shape of a straight line or cross or other shape.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples represent only a few embodiments of the present application, which are described in more detail and are not thereby to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. A flow stop clip, comprising:

an annular body having a first end and a second end disposed circumferentially, the annular body having an inner diameter that is adjustable to provide the annular body with a clamped state and a non-clamped state;

a first elastic arm, one end of which is connected with the annular body, and the first elastic arm is provided with a third end far away from the annular body; the method comprises the steps of,

one end of the second elastic arm is connected with the annular body, and the second elastic arm is provided with a fourth end far away from the annular body;

wherein the third and fourth ends are movable toward and away from each other to change an inner diameter of the annular body, and are further movable relative to each other to maintain the annular body in the clamped state.

2. The flow stop clip of claim 1, wherein the second resilient arm includes a first side and a second side disposed away from each other; the first side surface is tangential to the peripheral wall of the annular body, and the second side surface is connected to the end surface of the second end; in the clamped state, the first end can overlap inside the second end, and a portion where the first end and the second end overlap is located between the first side face and the second side face.

3. The flow stop clip of claim 2, wherein a thickness of an end of the second resilient arm proximate the annular body is greater than a thickness of the fourth end, the thickness being a distance between the first side and the second side.

4. The flow stop clip of claim 3, wherein the second side is an arcuate concave surface recessed toward the first side.

5. The flow stop clip of claim 2, wherein the inner peripheral wall of the annular body is provided with a relief notch extending through an end face of the second end, the first end being positionable within the relief notch to overlap the second end in the clamped state.

6. The flow stop clip of claim 5, wherein the relief notch is located between the first side and the second side; and/or the number of the groups of groups,

the depth of the relief notch along the radial direction of the annular body is equal to the thickness of the first end along the radial direction of the annular body.

7. The flow stop clip of any one of claims 1 to 6, wherein the first resilient arm comprises a first section and a second section connected to each other, an end of the first section remote from the second section being connected to the annular body, an end of the second section remote from the first section being the third end; the second section and the first section are arranged at an included angle, and the second section extends towards the direction close to the second elastic arm; the second resilient arm is disposed between the second segment and the annular body.

8. The flow stop clip of claim 7, wherein one of the third end and the fourth end is provided with a first clamping portion and the other is provided with a plurality of second clamping portions, the annular body having different inner diameters when the first clamping portions are clamped to different ones of the second clamping portions.

9. The flow stop clip of claim 8, wherein the third end is provided with an operating portion that projects away from the annular body relative to the second segment.

10. A surgical assist assembly, comprising:

a vascular prosthesis connectable to a patient's blood vessel;

the puncture sheath comprises a sheath tube and a hemostatic valve which is arranged in the sheath tube and seals the sheath tube, and the sheath tube is inserted into the artificial blood vessel; the method comprises the steps of,

the flow stop clip of any one of claims 1 to 9, having an annular body surrounding the vascular prosthesis, the annular body being capable of clamping the vascular prosthesis with the sheath when in the clamped condition.