CN114053573A - Liquid stop valve, guide sheath and guide sheath assembly for medical instrument - Google Patents

Abstract

The invention discloses a liquid stop valve, a guide sheath and a guide sheath assembly for a medical instrument, wherein the liquid stop valve comprises a first valve body, and the first valve body comprises: a hose through which a liquid can flow; the first fixing sleeve and the second fixing sleeve are used for fixing two ends of the hose; the first fixing sleeve and the second fixing sleeve extend oppositely and are connected; one of the first fixing sleeve and the second fixing sleeve can rotate relative to the other by a preset angle and is maintained. The invention discloses a liquid stopping valve, a guide sheath and a guide sheath assembly for a medical instrument, which solve the problem of liquid stopping of a large-size interventional medical instrument.

Description

Liquid stop valve, guide sheath and guide sheath assembly for medical instrument

Technical Field

The invention relates to the field of medical instruments, in particular to a liquid stop valve, a guide sheath and a guide sheath assembly for a medical instrument.

Background

In the medical field, in order to treat a lesion formed in a blood vessel, an interventional therapy is generally used, that is, a catheter that can be inserted into the lesion along the blood vessel. The catheter is generally inserted into a predetermined position in a blood vessel through a lumen in a guide sheath placed in the blood vessel, is led out into the blood vessel from a distal end opening formed at the distal end of the guide sheath, and is then inserted into the vicinity of a lesion along the blood vessel while maintaining this state. In this way, when the catheter is inserted into the blood vessel through the guide sheath, it is possible to prevent friction between the catheter and the skin while easily ensuring the patency of the blood vessel when the affected area is treated with the catheter.

However, the existing hemostatic valve of the large-diameter catheter sheath has the problem of unsatisfactory hemostatic effect.

Disclosure of Invention

In view of the above, embodiments of the present invention are intended to provide a liquid stop valve, a sheath, and a sheath assembly for a medical device, which can solve the problem of undesirable hemostatic effect of a hemostatic valve of a large-diameter catheter sheath.

In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

in a first aspect, an embodiment of the present invention provides a liquid stop valve for a medical apparatus, the liquid stop valve including a first valve body, the first valve body including:

a hose through which a liquid can flow;

the first fixing sleeve and the second fixing sleeve are used for fixing two ends of the hose;

the first fixing sleeve and the second fixing sleeve extend oppositely and are connected; one of the first fixing sleeve and the second fixing sleeve can rotate relative to the other by a preset angle and is maintained.

In the above scheme, one of the first fixing sleeve and the second fixing sleeve is sleeved on the other, and a fit clearance between the first fixing sleeve and the second fixing sleeve is preset.

In the above scheme, the second fixing sleeve is sleeved on the first fixing sleeve; the first valve body further comprises a spiral groove for guiding the second fixing sleeve relative to the first fixing sleeve in a rotating mode and at least one clamping pin matched with the spiral groove, the spiral groove is formed in the first fixing sleeve inserted into the outer circular surface of the second fixing sleeve, and the clamping pin is arranged on the inner wall of the first fixing sleeve in a sleeved mode.

In the above solution, the first valve body further includes an anti-loosening groove for preventing unintended rotation of the first and second fixing sleeves; the anti-loosening groove is connected to the tail end, far away from the second fixing sleeve, of the spiral groove, and the anti-loosening groove and the tail end of the spiral groove form a barb shape.

In the above scheme, the first valve body further includes a hose bushing, and the hose is fixed to the first fixing sleeve and the second fixing sleeve through the hose bushing; the both ends of hose all are fixed in the hose bush, the hose bush is fixed in respectively first fixed cover with the fixed cover of second.

In the above scheme, the liquid stop valve further comprises at least one second valve body arranged in the liquid channels at the two ends of the first valve body; the second valve body comprises a one-way sealing piece, the one-way sealing piece is provided with a cross groove which is axially communicated, and the gap of the cross groove is smaller than a preset value.

In the above scheme, the second valve body further comprises a sealing piece fixing sleeve for fixing the one-way sealing piece, and the sealing piece fixing sleeve is connected to the first fixing sleeve or the second fixing sleeve through threads.

In a second aspect, embodiments of the present invention provide an introducer sheath for interventional procedures, the introducer sheath comprising a sheath body and a hub, the hub comprising any one of the above-described fluid stop valves.

In the above scheme, the hub further comprises a connecting sleeve connected with the sheath body, one end of the connecting sleeve is connected with the sheath body, and the other end of the connecting sleeve is connected with the liquid stop valve.

In a third aspect, embodiments of the present invention provide an introducer sheath assembly comprising any one of the sheaths described above and an introducer sheath releaser for delivering and releasing the introducer sheath to a blood vessel, the introducer sheath being mounted at a proximal end of the introducer sheath releaser.

The liquid stop valve, the guide sheath and the guide sheath assembly for the medical instrument comprise a first valve body, wherein the first valve body comprises: a hose through which a liquid can flow; the first fixing sleeve and the second fixing sleeve are used for fixing two ends of the hose; the first fixing sleeve and the second fixing sleeve extend oppositely and are connected; one of the first fixing sleeve and the second fixing sleeve can rotate relative to the other by a preset angle and is maintained; therefore, the embodiment of the invention has the advantages that the hose is arranged in the liquid flow pipeline, and the function of stopping liquid flow is achieved by twisting the hose, so that the liquid stopping effect of the medical instrument is greatly improved, and the liquid stopping problem of the large-size interventional medical instrument is solved.

Other beneficial effects of the embodiments of the present invention will be further described in conjunction with the specific technical solutions in the detailed description.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below. It should be understood that the drawings described below are only a part of the drawings of the embodiments of the present invention, and that other drawings may be obtained by those skilled in the art without inventive effort.

FIG. 1 is a schematic view of a hemostatic valve according to an embodiment of the invention;

FIG. 2 is a first schematic view (the valve body is not closed) of the first valve body in the hemostatic valve of the embodiment of the invention;

FIG. 3 is a second schematic view of the first valve body of the hemostatic valve of the present invention (valve body closed);

FIG. 4 is a schematic view of a first harness of an embodiment of the hemostatic valve of the present invention;

FIG. 5 is a schematic view of a second harness of the hemostatic valve of an embodiment of the present invention;

FIG. 6 is a schematic view of a hose insert in a hemostatic valve according to an embodiment of the invention;

FIG. 7 is a schematic view of a second valve body of the hemostatic valve of an embodiment of the invention;

FIG. 8 is a schematic view of a one-way sealing disc in a hemostatic valve according to an embodiment of the invention;

FIG. 9 is a schematic view of a hub portion of an introducer sheath for interventional procedures in accordance with an embodiment of the present invention.

Detailed Description

It is to be noted that, in the present invention, the terms "comprises", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion, so that a method or apparatus including a series of elements includes not only the explicitly recited elements but also other elements not explicitly listed or inherent to the method or apparatus.

The term "coupled", unless otherwise indicated and limited, is to be construed broadly. For example, the two elements may be electrically connected, or may be connected through an intermediate member, directly or indirectly. The specific meaning of the above terms can be understood by those of ordinary skill in the art as appropriate.

If the terms "first \ second \ third" are referred to, they are merely used to distinguish similar objects and do not represent a particular ordering for the objects. It is to be understood that the terms first, second, and third, where permissible, are interchangeable in particular order or sequences.

An embodiment of the present invention provides a liquid stop valve for a medical apparatus, including a first valve body, the first valve body including:

a hose through which a liquid can flow;

the first fixing sleeve and the second fixing sleeve are used for fixing two ends of the hose;

the first fixing sleeve and the second fixing sleeve extend oppositely and are connected; one of the first fixing sleeve and the second fixing sleeve can rotate relative to the other by a preset angle and is maintained.

The preset angle is the degree of twisting the hose to cut off the liquid flow, specifically, the hose is twisted under the driving of the mutual rotation of the first fixing sleeve and the second fixing sleeve, and the hose is adopted, so the diameter of the hose can be gradually reduced in the twisting process until the liquid flow is cut off.

In particular, the medical device may be an introducer sheath for interventional therapy and the liquid stop valve may be a haemostatic valve in the introducer sheath.

According to the liquid stopping valve, the guide sheath and the guide sheath assembly for the medical instrument, disclosed by the embodiment of the invention, the hose is arranged in the liquid flow pipeline, and the function of stopping liquid flow is achieved by twisting the hose, so that the liquid stopping effect is greatly improved, and the liquid stopping problem of large-size interventional medical instruments is solved.

In one embodiment, one of the first fixing sleeve and the second fixing sleeve is sleeved on the other of the first fixing sleeve and the second fixing sleeve, and the fit clearance between the first fixing sleeve and the second fixing sleeve is preset. The structure can be simplified by establishing the connection in a manner that one of the sleeves is sleeved on the other and can rotate mutually, which is a preferable manner. The fit clearance of the first fixing sleeve and the second fixing sleeve needs to satisfy the following conditions: the two can rotate mutually or rotate mutually under the condition of a tool, but the two cannot loosen or reversely rotate in the maintaining process after rotating by a preset angle. Specifically, the fit clearance of the first and second fixing sleeves may be determined according to the kind of material and the surface roughness, and the larger the friction coefficient of the material, the larger the surface roughness, the larger the fit clearance needs to be, otherwise, the opposite is true. In a specific implementation, the fit clearance may be a transition fit.

In one embodiment, said second pouch is nested within said first pouch; the first valve body further comprises a spiral groove for guiding the second fixing sleeve relative to the first fixing sleeve in a rotating mode and at least one clamping pin matched with the spiral groove, the spiral groove is formed in the first fixing sleeve inserted into the outer circular surface of the second fixing sleeve, and the clamping pin is arranged on the inner wall of the first fixing sleeve in a sleeved mode. The spiral groove and the clamping pin are used for providing guidance for the rotation of the first fixing sleeve or the second fixing sleeve, so that the twisting deformation of the hose can be more regular, and the liquid stopping function is more stable, which is an optimal mode. And, through the rotation of spiral mode, also more accord with the twist deformation law of hose, hose length can shorten when twisting promptly. Is the preferred mode. It will be appreciated that rotation in a manner other than a helix is also possible due to the soft nature of the hose.

In one embodiment, the first valve body further comprises an anti-loosening groove that prevents unintended rotation of the first and second hubs; the anti-loosening groove is connected to the tail end, far away from the second fixing sleeve, of the spiral groove, and the anti-loosening groove and the tail end of the spiral groove form a barb shape. In this way, the locking mode is more reliable and is the preferred mode, and in addition, no additional part such as a locking pin and the like is needed, and the structure is simpler.

In one embodiment, the first valve body further comprises a hose bushing through which the hose is secured to the first and second hubs; the two ends of the hose are respectively fixed on the two hose bushings which are respectively fixed on the first fixing sleeve and the second fixing sleeve. Due to the soft nature of the hose, it is not possible to better cooperate with the first or second retaining sleeve, and therefore fixing to the first or second retaining sleeve by means of a hose bushing is a more reliable way.

In one embodiment, the liquid stop valve further comprises at least one second valve body arranged in the liquid passage at two ends of the first valve body; the second valve body comprises a one-way sealing piece, the one-way sealing piece is provided with a cross groove which is axially communicated, and the gap of the cross groove is smaller than a preset value. The second valve body also has a function of stopping the liquid flow, and the liquid stopping effect of the liquid stopping valve can be further improved. The first valve body can be arranged at both ends or only at one end. The gap of the cross recess needs to be small enough so that it can be sealed. Specifically, the one-way sealing piece is generally made of an elastic material, such as silica gel, so that when sufficient pressure is applied to one end of the one-way sealing piece, the cross groove can be opened from the middle to the periphery, and the effect of one-way conduction is achieved.

In one embodiment, the second valve body further includes a sealing piece fixing sleeve for fixing the one-way sealing piece, and the sealing piece fixing sleeve is connected to the first fixing sleeve or the second fixing sleeve through threads. Thus, a stronger fixation of the one-way sealing piece is preferred.

Embodiments of the present invention also provide an introducer sheath for interventional therapy, the introducer sheath comprising a sheath body and a hub, the hub comprising any one of the above-described fluid stop valves. The liquid stop valve plays a role in stopping bleeding in the guide sheath.

In one embodiment, the hub further comprises a connection sleeve connected to the sheath, one end of the connection sleeve is connected to the sheath, and the other end of the connection sleeve is connected to the liquid stop valve. Through the connecting sleeve, the hub can be conveniently connected with the sheath body.

Embodiments of the present invention also provide an introducer sheath assembly, which includes any one of the above-mentioned introducer sheaths and an introducer sheath releaser for delivering and releasing the introducer sheath to a blood vessel, wherein the introducer sheath is mounted at a proximal end of the introducer sheath releaser. The sheath releaser is a specialized tool for releasing the sheath to the vessel. Thus, the guide sheath can be conveniently and quickly mounted on the human body.

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Also, the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from these embodiments without inventive step, are within the scope of protection of the present invention.

First embodiment

The embodiment provides a hemostatic valve for use in a guide sheath of an interventional procedure, and as shown in fig. 1 to 8, thehemostatic valve 10 comprises afirst valve body 101 and asecond valve body 102, and thesecond valve body 102 is disposed in a liquid passage at an outer end of thefirst valve body 101. Thefirst valve body 101 includes aflexible tube 1011, afirst harness 1012 and asecond harness 1013 through which a liquid can flow, and both ends of theflexible tube 1011 are fixed to thefirst harness 1012 and thesecond harness 1013, respectively.

In this embodiment, thesecond fixing sleeve 1013 is sleeved on thefirst fixing sleeve 1012, and the fit clearance is a transition fit.

In this embodiment, thefirst fixing sleeve 1012 is inserted into thesecond fixing sleeve 1013 and has aspiral groove 1014 on the outer circumferential surface thereof, thesecond fixing sleeve 1013 is sleeved on the inner wall of thefirst fixing sleeve 1012 and is provided with adetent 1015 matched with thespiral groove 1014, and thespiral groove 1014 and thedetent 1015 are matched to provide guidance for the rotation of thefirst fixing sleeve 1012 or thesecond fixing sleeve 1013.

Specifically, for the convenience of assembly, thebayonet 1015 is inserted from the outside of the second fixing sleeve along the radial direction, penetrates through the side wall of the second fixing sleeve, and protrudes out of the inner wall of the second fixing sleeve.

In this embodiment, the first valve body further includes ananti-loosening groove 1016, theanti-loosening groove 1016 for preventing unintended rotation of the first andsecond hubs 1012, 1013. Theanti-loosening groove 1016 is attached to the end of thehelical groove 1014 remote from thesecond sleeve 1013, and theanti-loosening groove 1016 forms an undercut with the end of thehelical groove 1014.

Specifically, the shape of theanti-loose groove 1016 may be approximately a semicircle, and the extending direction of theanti-loose groove 1016 is substantially perpendicular to the extending direction of thespiral groove 1014, so that a shape similar to a barb may be formed. Thus, thelocking pin 1015 is moved along thespiral groove 1014 to thelocking groove 1016 and is locked.

In this embodiment, the first valve body further comprises ahose bushing 1017, and thehose 1011 is fixed to the first and second fixingsleeves 1012 and 1013 via thehose bushing 1017; the two ends of thehose 1011 are respectively fixed to the twohose bushings 1017, and the twohose bushings 1017 are respectively fixed to thefirst fixing sleeve 1012 and thesecond fixing sleeve 1013.

In this embodiment, thesecond valve body 102 includes a one-way sealing piece 1021, and the one-way sealing piece 1021 is provided with a cross-shaped groove that penetrates in the axial direction. The one-way sealing piece is made of a silica gel material and can be sealed, and the middle cross groove can also be used as a channel for inserting a conduit.

In this embodiment, thesecond valve body 102 further includes a sealingplate fixing sleeve 1022 for fixing the one-way sealing plate 1021, and the sealingplate fixing sleeve 1022 is connected to thefirst fixing sleeve 1012 or thesecond fixing sleeve 1013 through a screw.

Second embodiment

The present embodiment provides an introducer sheath for interventional procedures, as shown in fig. 9, comprising a sheath body (not shown in the drawings) and a hub 1, the hub 1 comprising thehemostasis valve 10 and the connection sleeve 20 of the first embodiment. One end of the connecting sleeve 20 is connected with the sheath body, and the other end is connected with thehemostatic valve 10. Through the connecting sleeve, the hub can be conveniently connected with the sheath body.

Third embodiment

The present embodiment provides an introducer sheath assembly (not shown) comprising an introducer sheath according to the second embodiment and an introducer sheath releaser for delivering and releasing the introducer sheath to a blood vessel, the introducer sheath being mounted at a proximal end of the introducer sheath releaser. Here, the proximal end refers to an end inserted into a blood vessel.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.

Claims (10)

Translated fromChinese

1.一种用于医疗器械的止液阀，其特征在于，所述止液阀包括第一阀体，所述第一阀体包括：1. A liquid stop valve for medical equipment, wherein the liquid stop valve comprises a first valve body, and the first valve body comprises:可流通液体的软管；A hose that can flow liquid;固定住所述软管两端的第一固定套和第二固定套；Fixing the first fixing sleeve and the second fixing sleeve at both ends of the hose;所述第一固定套和所述第二固定套相向延伸并连接；所述第一固定套和所述第二固定套中的其中一个，可相对另一个转动预设角度并维持。The first fixing sleeve and the second fixing sleeve are extended and connected to each other; one of the first fixing sleeve and the second fixing sleeve can be rotated relative to the other at a preset angle and maintained.2.根据权利要求1所述的用于医疗器械的止液阀，其特征在于，所述第一固定套和所述第二固定套中的其中一个套设于另一个，所述第一固定套和所述第二固定套的配合间隙为预设。2 . The liquid stop valve for medical devices according to claim 1 , wherein one of the first fixing sleeve and the second fixing sleeve is sleeved over the other, and the first fixing sleeve is sleeved on the other. 3 . The matching clearance between the sleeve and the second fixing sleeve is preset.3.根据权利要求2所述的用于医疗器械的止液阀，其特征在于，所述第二固定套套设于所述第一固定套；所述第一阀体还包括给所述第二固定套相对所述第一固定套转动提供导向的螺旋槽和与所述螺旋槽配合的至少一个卡销，所述螺旋槽设置于所述第一固定套插入所述第二固定套的外圆面上，所述卡销设置于所述第二固定套套设于所述第一固定套的内壁上。3 . The liquid stop valve for medical equipment according to claim 2 , wherein the second fixing sleeve is sleeved on the first fixing sleeve; the first valve body further comprises a The fixed sleeve rotates relative to the first fixed sleeve to provide a guiding helical groove and at least one bayonet matched with the helical groove, and the helical groove is arranged on the outer circle where the first fixed sleeve is inserted into the second fixed sleeve On the surface, the bayonet is arranged on the inner wall of the second fixing sleeve sleeved on the first fixing sleeve.4.根据权利要求3所述的用于医疗器械的止液阀，其特征在于，所述第一阀体还包括防止所述第一固定套和所述第二固定套非计划转动的防松槽；所述防松槽连接于所述螺旋槽远离所述第二固定套的末端，且所述防松槽与所述螺旋槽的末端形成倒勾形状。4 . The liquid stop valve for medical equipment according to claim 3 , wherein the first valve body further comprises an anti-loosening device for preventing unplanned rotation of the first fixing sleeve and the second fixing sleeve. 5 . a groove; the anti-loosening groove is connected to the end of the helical groove away from the second fixing sleeve, and the anti-loosening groove and the end of the helical groove form a barb shape.5.根据权利要求1或2所述的用于医疗器械的止液阀，其特征在于，所述第一阀体还包括软管衬套，所述软管通过所述软管衬套固定于所述第一固定套和所述第二固定套；所述软管的两端均固定于所述软管衬套，所述软管衬套分别固定于所述第一固定套和所述第二固定套。5. The liquid stop valve for medical devices according to claim 1 or 2, wherein the first valve body further comprises a hose bushing, and the hose is fixed to the hose via the hose bushing. The first fixing sleeve and the second fixing sleeve; both ends of the hose are fixed to the hose bushing, and the hose bushing is respectively fixed to the first fixing sleeve and the first fixing sleeve. Two fixed sets.6.根据权利要求1或2所述的用于医疗器械的止液阀，其特征在于，所述止液阀还包括至少一个设置于所述第一阀体两端的液体通道中的所述第二阀体；所述第二阀体包括单向密封片，所述单向密封片开设有轴向贯通的十字槽，所述十字槽的间隙小于预设值。6. The liquid stop valve for medical devices according to claim 1 or 2, wherein the liquid stop valve further comprises at least one said first valve body disposed in the liquid channel at both ends of the first valve body. Two valve bodies; the second valve body includes a one-way sealing sheet, and the one-way sealing sheet is provided with an axially through cross groove, and the clearance of the cross groove is smaller than a preset value.7.根据权利要求6所述的用于医疗器械的止液阀，其特征在于，所述第二阀体还包括固定所述单向密封片的所述密封片固定套，所述密封片固定套通过螺纹连接于所述第一固定套或所述第二固定套。7 . The liquid stop valve for medical devices according to claim 6 , wherein the second valve body further comprises the sealing sheet fixing sleeve for fixing the one-way sealing sheet, and the sealing sheet is fixed The sleeve is connected to the first fixing sleeve or the second fixing sleeve through threads.8.一种用于介入治疗的导鞘，其特征在于，所述导鞘包括鞘体和毂部，所述毂部包括权利要求1～7任一项所述的止液阀。8 . A guide sheath for interventional therapy, wherein the guide sheath comprises a sheath body and a hub, and the hub comprises the liquid stop valve according to any one of claims 1 to 7 .9.根据权利要求8所述的用于介入治疗的导鞘，其特征在于，所述毂部还包括连接所述鞘体的连接套，所述连接套一端连接所述鞘体，另一端连接所述止液阀。9 . The guiding sheath for interventional therapy according to claim 8 , wherein the hub further comprises a connection sleeve connected to the sheath body, one end of the connection sleeve is connected to the sheath body, and the other end is connected to the sheath body. 10 . the liquid stop valve.10.一种导鞘组件，其特征在于，所述导鞘组件包括权利要求8或9所述的导鞘和将所述导鞘递送并释放至血管的导鞘释放器，所述导鞘安装于所述导鞘释放器的近心端。10. A guide sheath assembly, wherein the guide sheath assembly comprises the guide sheath described in claim 8 or 9 and a guide sheath releaser that delivers and releases the guide sheath to a blood vessel, and the guide sheath is installed on the proximal end of the sheath releaser.

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