CN212700075U - Liquid stop valve, guide sheath and guide sheath assembly for medical instrument - Google Patents
Liquid stop valve, guide sheath and guide sheath assembly for medical instrument Download PDFInfo
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- CN212700075U CN212700075U CN202021627439.4U CN202021627439U CN212700075U CN 212700075 U CN212700075 U CN 212700075U CN 202021627439 U CN202021627439 U CN 202021627439U CN 212700075 U CN212700075 U CN 212700075U
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- fixing sleeve
- hose
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Abstract
The utility model discloses a end liquid valve, sheath and sheath subassembly for medical instrument, end liquid valve includes first valve body, first valve body includes: 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 utility model discloses a liquid valve, sheath and sheath subassembly end for medical instrument has solved the jumbo size and has intervened medical instrument's end liquid problem.
Description
Technical Field
The utility model relates to the field of medical equipment, concretely relates to end liquid valve, uide sheath and uide sheath subassembly for medical equipment.
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.
SUMMERY OF THE UTILITY MODEL
In view of the above, embodiments of the present invention are intended to provide a hemostatic valve, a sheath and a sheath assembly for medical devices, which can solve the problem of unsatisfactory hemostatic effect of the hemostatic valve of a large-diameter catheter sheath.
In order to achieve the above object, 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 includes a first valve body, the first valve body includes:
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 liquid 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 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 proximal to the introducer sheath releaser.
The utility model discloses a end liquid valve, sheath and sheath subassembly for medical instrument, end liquid valve includes first valve body, first valve body includes: 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; it can be seen that the embodiment of the utility model provides a through set up a hose in the fluid flow pipeline to through twisting the hose reaches the function that ends the liquid stream, has improved medical instrument's end liquid effect greatly, has solved the jumbo size and has intervened medical instrument's end liquid problem.
Other beneficial effects of the embodiment of the utility model are further explained in combination with specific technical scheme in the concrete implementation manner.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings 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 present 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 present invention;
fig. 3 is a second schematic view (valve body closed) of the first valve body in the hemostatic valve of the embodiment of the present invention;
fig. 4 is a schematic view of a first fixing sleeve of a hemostatic valve according to an embodiment of the present invention;
FIG. 5 is a schematic view of a second securing sleeve in a hemostatic valve according to 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 the present invention;
FIG. 8 is a schematic view of a one-way sealing piece in a hemostatic valve according to an embodiment of the present invention;
fig. 9 is a schematic view of a hub of an introducer sheath for interventional procedures according to 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.
The embodiment of the utility model provides a liquid valve ends for medical instrument, it includes first valve body to end the liquid valve, first valve body includes:
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.
The utility model discloses a end liquid valve, sheath and sheath subassembly for medical instrument through set up a hose in the fluid flow pipeline to through twisting reverse the hose reaches the function that ends the liquid stream, has improved greatly and has ended the liquid effect, has solved the jumbo size and has intervened medical instrument's end liquid problem.
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.
An embodiment of the present invention further provides a guide sheath for interventional therapy, the guide sheath includes a sheath body and a hub, the hub includes the above-mentioned arbitrary liquid stop valve. 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.
The embodiment of the utility model provides a still provide a guide sheath subassembly, the guide sheath subassembly include above arbitrary guide sheath and with the guide sheath is delivered and is released to vascular guide sheath releaser, the guide sheath install in the proximal end of guide 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 with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only 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 obtained without inventive effort by a person skilled in the art according to the embodiments, are within the scope 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, the hemostatic valve 10 comprises a first valve body 101 and a second valve body 102, and the second valve body 102 is disposed in a liquid passage at an outer end of the first valve body 101. The first valve body 101 includes a flexible tube 1011, a first harness 1012 and a second harness 1013 through which a liquid can flow, and both ends of the flexible tube 1011 are fixed to the first harness 1012 and the second harness 1013, respectively.
In this embodiment, the second fixing sleeve 1013 is sleeved on the first fixing sleeve 1012, and the fit clearance is a transition fit.
In this embodiment, the first fixing sleeve 1012 is inserted into the second fixing sleeve 1013 and has a spiral groove 1014 on the outer circumferential surface thereof, the second fixing sleeve 1013 is sleeved on the inner wall of the first fixing sleeve 1012 and is provided with a detent 1015 matched with the spiral groove 1014, and the spiral groove 1014 and the detent 1015 are matched to provide guidance for the rotation of the first fixing sleeve 1012 or the second fixing sleeve 1013.
Specifically, for the convenience of assembly, the bayonet 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 an anti-loosening groove 1016, the anti-loosening groove 1016 for preventing unintended rotation of the first and second hubs 1012, 1013. The anti-loosening groove 1016 is attached to the end of the helical groove 1014 remote from the second sleeve 1013, and the anti-loosening groove 1016 forms an undercut with the end of the helical groove 1014.
Specifically, the shape of the anti-loose groove 1016 may be approximately a semicircle, and the extending direction of the anti-loose groove 1016 is substantially perpendicular to the extending direction of the spiral groove 1014, so that a shape similar to a barb may be formed. Thus, the locking pin 1015 is moved along the spiral groove 1014 to the locking groove 1016 and is locked.
In this embodiment, the first valve body further comprises a hose bushing 1017, and the hose 1011 is fixed to the first and second fixing sleeves 1012 and 1013 via the hose bushing 1017; the two ends of the hose 1011 are respectively fixed to the two hose bushings 1017, and the two hose bushings 1017 are respectively fixed to the first fixing sleeve 1012 and the second fixing sleeve 1013.
In this embodiment, the second 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, the second valve body 102 further includes a sealing plate fixing sleeve 1022 for fixing the one-way sealing plate 1021, and the sealing plate fixing sleeve 1022 is connected to the first fixing sleeve 1012 or the second 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 the hemostasis 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 the hemostatic 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 for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A liquid stop valve for a medical instrument, the liquid stop valve comprising a first valve body comprising:
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.
2. The fluid stop valve for a medical instrument as defined in claim 1, wherein one of said first and second hubs is nested within the other, and wherein a fit clearance between said first and second hubs is predetermined.
3. The liquid stop valve for a medical instrument as defined in claim 2, wherein said second sleeve is sleeved on said first 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.
4. The fluid stop valve for a medical instrument as defined in claim 3, wherein said first valve body further includes an anti-loosening groove preventing unintended rotation of said 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.
5. The liquid stop valve for a medical instrument as defined in claim 1 or 2, wherein said first valve body further comprises a hose bushing through which said hose is fixed to said first and second hubs; 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.
6. The liquid stop valve for a medical instrument according to claim 1 or 2, further comprising at least one second valve body disposed in the liquid passage at both 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.
7. The valve of claim 6, wherein said second valve body further comprises a sealing plate retainer for retaining said one-way sealing plate, said sealing plate retainer being threadably connected to said first retainer or said second retainer.
8. An introducer sheath for interventional procedures, the introducer sheath comprising a sheath body and a hub, the hub comprising a fluid stop valve as defined in any one of claims 1 to 7.
9. The introducer sheath for interventional procedures of claim 8, wherein the hub further comprises a connection sleeve connected to the sheath body, the connection sleeve being connected to the sheath body at one end and to the liquid stop valve at the other end.
10. An introducer sheath assembly comprising an introducer sheath according to claim 8 or 9 and an introducer sheath releaser for delivering and releasing the introducer sheath into a blood vessel, the introducer sheath being mounted at a proximal end of the introducer sheath releaser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021627439.4U CN212700075U (en) | 2020-08-07 | 2020-08-07 | Liquid stop valve, guide sheath and guide sheath assembly for medical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021627439.4U CN212700075U (en) | 2020-08-07 | 2020-08-07 | Liquid stop valve, guide sheath and guide sheath assembly for medical instrument |
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| Publication Number | Publication Date |
|---|---|
| CN212700075U true CN212700075U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021627439.4U Active CN212700075U (en) | 2020-08-07 | 2020-08-07 | Liquid stop valve, guide sheath and guide sheath assembly for medical instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212700075U (en) |
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2020
- 2020-08-07 CN CN202021627439.4U patent/CN212700075U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210722 Address after: 201615 room 604, building 6, 1158 Central Road, Jiuting Town, Songjiang District, Shanghai Patentee after: Shanghai Qi-gong Medical Technology Co.,Ltd. Address before: 201614 room 604, building 6, no.1158, Central Road, Jiuting Town, Songjiang District, Shanghai Patentee before: Ding Jian Patentee before: Shanghai Qi-gong Medical Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |