CN213685257U - Sealing device and sheath tube comprising same - Google Patents
Sealing device and sheath tube comprising same Download PDFInfo
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- CN213685257U CN213685257U CN202022681967.4U CN202022681967U CN213685257U CN 213685257 U CN213685257 U CN 213685257U CN 202022681967 U CN202022681967 U CN 202022681967U CN 213685257 U CN213685257 U CN 213685257U
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- Prior art keywords
- ring body
- sealing ring
- pressure
- sealing
- sealing device
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- 238000007789 sealing Methods 0.000 title claims abstract description 144
- 230000008602 contraction Effects 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 30
- 239000012530 fluid Substances 0.000 claims description 13
- 239000007788 liquid Substances 0.000 description 12
- 230000001276 controlling effect Effects 0.000 description 4
- 239000008280 blood Substances 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 206010015866 Extravasation Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000036251 extravasation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000013151 thrombectomy Methods 0.000 description 1
- 208000019553 vascular disease Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to the technical field of medical equipment, a sealing device and contain its sheath pipe is disclosed. The device includes: the sealing ring body is arranged at the near end of the sheath tube and is used for matching the sheath tube to pass through a tubular structure; and the pressure adjusting mechanism is connected with the sealing ring body and is used for adjusting the pressure in the elastic sealing ring body so as to control the radial expansion and contraction of the sealing ring body. The embodiment of the utility model provides an internal diameter of sealing washer is suitably adjusted to the size of the surgical instruments that can pass through as required, improves the commonality when the leading-in surgical instruments of sheath pipe to improve the convenience of operation.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to sealing device and contain its sheath pipe.
Background
Minimally invasive endovascular intervention has gradually become the mainstream trend in the treatment of vascular diseases. The mechanical thrombus removal interventional operation needs puncturing the blood vessel through a puncturing sheath and guiding surgical instruments by matching with an introducing sheath. When the existing guiding sheath is guided into or passes through a tubular surgical instrument, a sealing ring is generally required to be arranged at the proximal end of the sheath to prevent blood from seeping out.
The inventor finds that the sealing device structure adopted in the related art is not suitable for guiding surgical instruments with different specifications, and is not beneficial to smooth operation.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a sealing device and a sheath tube including the same, which can appropriately adjust the inner diameter of a sealing ring according to the size of a surgical instrument to be passed through, thereby improving the versatility of the sheath tube when the surgical instrument is introduced into the sheath tube, and improving the convenience of the surgical operation.
In order to solve the above technical problem, an embodiment of the present invention provides a sealing device, including:
the sealing ring body is arranged at the near end of the sheath tube and is used for matching the sheath tube to pass through a tubular structure;
and the pressure adjusting mechanism is connected with the sealing ring body and is used for adjusting the pressure in the elastic sealing ring body so as to control the radial expansion and contraction of the sealing ring body.
The utility model discloses embodiment is for prior art, through addding pressure adjustment mechanism, adjusts this internal fluid pressure of sealing washer, and the elasticity sealing washer body can be along with the fluid pressure's in it size and the breathing to the size of steerable sealing washer body internal diameter, and then the internal diameter of sealing washer body can suitably be adjusted to the size of the leading-in surgical instruments as required, improves sealing device's commonality, and then improves the convenience of operation.
As an embodiment, the pressure adjusting mechanism includes:
the inner end of the connecting pipe is connected with the sealing ring body;
the joint is connected with a pressure regulating part, the joint and the connecting pipe form a pressure regulating channel, and the joint is also provided with a two-way valve for opening or closing the pressure regulating channel; the pressure regulating part is used for regulating the pressure of the fluid in the elastic sealing ring body.
In one embodiment, the pressure regulating member is a syringe.
As an embodiment, the syringe is provided with scale marks for prompting the inner diameter of the elastic sealing ring body.
As an embodiment, the pressure adjusting mechanism includes:
the inner end of the connecting pipe is connected with the sealing ring body;
the pressure regulator is connected with the outer end of the connecting pipe; the pressure regulator is used for regulating the pressure of the fluid in the elastic sealing ring body.
As an embodiment, the pressure regulator comprises:
a housing connected to the connection pipe; the inner cavity of the shell is communicated with the inner cavity of the elastic sealing ring body;
the pressure regulating structure is movably matched with the inner wall of the shell in a sealing way; the shell is also provided with a locking piece matched with the pressure regulating structure.
In one embodiment, the housing and the connecting tube are a single piece, and the housing further has an opening and a sealing plug for sealing the opening.
As an embodiment, the elastic sealing ring body is enclosed to be in a shape of a round tube or a dumbbell; or the inner surface of the elastic sealing ring body is wavy; or the inner surface of the elastic sealing ring body is formed by connecting a plurality of cambered surfaces which are distributed along the circumferential direction and protrude towards the center direction of the elastic sealing ring body.
As an embodiment, the pressure adjusting mechanism is connected to a side surface of the elastic sealing ring body.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly introduced below, it should be understood that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a sealing device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the sealing device shown in FIG. 1 in use;
fig. 3 is a schematic view of a sealing device according to another embodiment of the present invention in a use state;
FIG. 4 is a schematic view of another state of use of the sealing device shown in FIG. 3;
fig. 5a is a schematic cross-sectional structure view of a seal ring body of a sealing device according to an embodiment of the present invention;
FIG. 5b is a longitudinal sectional view of the sealing ring body shown in FIG. 5 a;
fig. 6a is a schematic cross-sectional view of a seal ring body of a sealing device according to another embodiment of the present invention;
FIG. 6b is a longitudinal sectional view of the sealing ring body shown in FIG. 6 a;
fig. 7a is a schematic cross-sectional view of a seal ring body of a sealing device according to another embodiment of the present invention;
FIG. 7b is a longitudinal sectional view of the sealing ring body shown in FIG. 7 a;
fig. 8a is a schematic cross-sectional structure view of a seal ring body of a sealing device according to a further embodiment of the present invention;
FIG. 8b is a longitudinal sectional view of the seal ring body shown in FIG. 8 a;
fig. 9 is a schematic structural diagram of a sheath according to an embodiment.
In the figure: the sealing device comprises a sealing device 1, a sealing ring body 2, a connecting pipe 30, a joint 31, a two-way valve 32, a pressure regulating piece 33, a shell 34, a pressure regulating structure 35, a sheath pipe 4 and a connecting piece 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the invention. However, the technical solution claimed in the present invention can be realized without these technical details and various changes and modifications based on the following embodiments.
Unless otherwise stated, the proximal and distal ends referred to in the present disclosure have the same meaning in the orientation, i.e., in the use state, the distal end is the end away from the operator, and the proximal end is the end close to the operator, who controls the thrombectomy device at the proximal end.
An embodiment of the present invention provides a sealing device, especially suitable for cooperating with a sheath tube, but not limited thereto, it should be understood that the sealing device of the present embodiment can also cooperate with other various instruments that need to introduce tubular structures of different diameters and sizes. As shown in fig. 1 to 4, the sealing device 1 includes: elasticity sealing washer body 2, sealing washer body 2 set up in sheath pipe near-end for the cooperation sheath pipe passes through tubular structure, and sealing washer body 2 is used for forming sealed cooperation with the surface of the surgical instruments that are guided into promptly, for example sheath pipe core etc. prevents the oozing blood. The sealing device 1 further comprises a pressure adjusting mechanism connected with the sealing ring body 2 and used for adjusting the fluid pressure in the elastic sealing ring body 2 so as to control the radial expansion and contraction of the sealing ring body 2. The sealing ring body 2 can be a hollow cylindrical structure and is made of elastic materials with air tightness or liquid tightness. The sealing ring body is internally injected with liquid or gas through the pressure adjusting mechanism to expand the sealing ring body, so that the inner diameter of the sealing ring body is reduced, the sealing ring body has better sealing effect, the fluid in the sealing ring body is pumped out through the pressure adjusting mechanism to enable the sealing ring body to elastically retract, and the friction resistance when the sealing ring penetrates into apparatuses such as a sheath tube core can be reduced. Therefore, the sealing device of the embodiment can control the size of the inner diameter of the sealing ring body by controlling the volume of the liquid or gas injected into the sealing ring body, so as to adapt to the outer diameters of different introduction instruments, so that the sealing device not only has better sealing performance, but also can conveniently adjust the frictional resistance when the instruments are introduced, and the convenience of the operation is improved.
Alternatively, in this embodiment, the pressure adjustment mechanism may include: the inner end of the connecting pipe 30 is connected with the sealing ring body 2, the joint 31 is connected with the outer end of the connecting pipe 30, the joint is connected with the pressure regulating piece 33, the joint 31 and the connecting pipe 30 form a pressure regulating channel, the joint 31 is further provided with a two-way valve 32 for opening or closing the pressure regulating channel, and the pressure regulating piece 33 is used for regulating the pressure of fluid in the elastic sealing ring body 2. In this embodiment, the elastic sealing ring body 2, the connecting pipe 30 and the joint 31 may be an integral piece, and the elastic sealing ring body 2 may have a hollow cylindrical structure. Alternatively, in the present embodiment, the pressure adjusting mechanism may be connected to the side surface of the elastic seal ring body 2, that is, the connection pipe 30 extends from the side surface of the seal ring body 2, but not limited thereto, the connection pipe 30 may also extend from the outer end surface of the seal ring body 2. The two-way valve may be implemented by a structure known to those skilled in the art that can control the on/off of the tube, and is not limited in particular. By way of example and not limitation, in the present embodiment, the pressure regulator 33 may be a syringe. Furthermore, the syringe is also provided with scale marks for prompting the inner diameter of the elastic sealing ring body 2. As shown in fig. 2, when the sealing device of this embodiment is used, a certain amount of liquid, such as pure medical water, can be sucked into the syringe barrel, and when the pressure of the liquid in the sealing ring body needs to be increased, the two-way valve can be opened, a certain amount of liquid can be injected into the sealing ring body, and then the two-way valve is closed; similarly, when it is desired to reduce the pressure of the liquid within the seal body, the two-way valve may be opened so that a portion of the liquid of the seal body drains into the syringe, thereby controlling the inside diameter of the seal body by controlling the volume of liquid entering the seal body. It will be appreciated that in some instances, the inner diameter of the seal ring body may also be controlled by controlling the amount of gas entering the seal ring body, and will not be described in further detail herein.
The connection pipe and the pressure regulating member in the pressure regulating mechanism in the above embodiment are separate structures, and as an alternative to the above embodiment, in some cases, the pressure regulating mechanism may also be integrated. Specifically, the pressure adjusting mechanism may include: a connecting pipe 30 with the inner end connected with the sealing ring body 2, and a pressure regulator connected with the outer end of the connecting pipe 30, wherein the pressure regulator is used for regulating the pressure of the fluid in the elastic sealing ring body 2. In this embodiment, the pressure regulator and the connecting pipe are integrated. Alternatively, the pressure regulator may include: a housing 34 connected to the connection pipe 30, and a pressure adjusting structure 35 movably and hermetically engaged with an inner wall of the housing 34. The inner cavity of the shell 34 is communicated with the inner cavity of the elastic sealing ring body 2. The housing 34 is further provided with a locking member engaged with the pressure adjusting structure 35. In this embodiment, pressure regulating structure 35 can be for the piston that has the handle, and piston and shells inner wall activity sealing cooperation, and the locking piece is used for locking the piston in the specific position of casing, for example, can set up the breach on hand, and the locking piece on the casing can be rotatable dog, and when the dog screw in breach was interior, the piston was fixed a position on the casing, and this embodiment does not do specific restriction to the implementation of locking piece. In this embodiment, a certain amount of liquid or a certain pressure of gas may be pre-filled in the housing, as shown in fig. 3 and 4, the amount of liquid or gas entering the sealing ring body is changed by changing the position of the pressure regulating structure, so as to control the radial dimension of the sealing ring body. It is understood that, in the pressure adjusting mechanism of the present embodiment, the locking member on the housing may be eliminated, and the pressure in the sealing ring body is maintained by the two-way valve provided on the connecting pipe 30.
As an embodiment, in this embodiment, the housing 34 and the connecting tube 30 may be a single piece, and the housing may further be provided with an opening and a sealing plug for sealing the opening, so that when the sealing device is used, a certain amount of liquid or gas may be injected into the housing through the opening of the housing, and after the injection is finished, the opening may be sealed by the sealing plug.
On the basis of the above embodiment, optionally, in this embodiment, as shown in fig. 5a and 5b, the inner surface of the elastic sealing ring body is formed by connecting a plurality of arc surfaces which are distributed along the circumferential direction and protrude toward the center direction of the elastic sealing ring body, for example, 4 protruding arc surfaces are connected to form the inner surface of the sealing ring body, so that the elastic sealing ring body 2 has a petal-shaped sealing cavity.
As an alternative, as shown in fig. 6a and 6b, the elastic sealing ring body 2 may be enclosed in a circular tube shape, so as to facilitate the introduction of a circular tube-shaped surgical instrument, such as a catheter.
As a further alternative, as shown in fig. 7a and 7b, the inner surface of the elastic sealing ring body 2 may be wavy, so as to ensure the sealing property, and at the same time, reduce the contact area between the sealing ring body 2 and the introduced instrument, thereby reducing the friction force therebetween, so as to facilitate the introduction of the instrument more smoothly.
As a further alternative, as shown in fig. 8a and 8b, the elastic sealing ring body may also be formed in a dumbbell shape, which also facilitates the introduction of the instrument.
Compared with the existing sealing ring, the sealing device of the embodiment adjusts the fluid pressure in the sealing ring body by additionally arranging the pressure adjusting mechanism, the elastic sealing ring body can expand and contract along with the fluid pressure in the elastic sealing ring body, so that the size of the inner diameter of the sealing ring body can be controlled, the inner diameter of the sealing ring body can be appropriately adjusted according to the size of a surgical instrument guided into the elastic sealing ring body as required, the universality of the sealing device is improved, and the convenience of operation is further improved.
The embodiment of the utility model provides a still provide a sheath pipe, as shown in figure 9, this sheath pipe includes: a sheath body 4 and a sealing device 1 as described in any of the above embodiments. Specifically, in this embodiment, the sheath body 4 is connected to the connecting member 5, and the seal ring body 2 is disposed in the connecting member. However, in some examples, the sealing ring body may be disposed directly at the proximal end of the sheath body 4.
Compared with the prior art, the sheath tube of this embodiment, because the adjustable internal diameter size of the sealing device of sheath tube near-end to the internal diameter size of sealing washer body is suitably adjusted to the external diameter size of the leading-in apparatus of ability as required, thereby not only can realize good sealed, prevents operation in-process blood extravasation, can reduce the operation degree of difficulty when leading-in surgical instruments moreover, is convenient for smoothly lead-in the apparatus of different specifications, and then is favorable to improving the convenience of operation.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (10)
1. A seal assembly, comprising:
the sealing ring body is arranged at the near end of the sheath tube and is used for matching the sheath tube to pass through a tubular structure;
and the pressure adjusting mechanism is connected with the sealing ring body and is used for adjusting the fluid pressure in the elastic sealing ring body so as to control the radial expansion and contraction of the sealing ring body.
2. The sealing device of claim 1, wherein the pressure adjustment mechanism comprises:
the inner end of the connecting pipe is connected with the sealing ring body;
the joint is connected with a pressure regulating part, the joint and the connecting pipe form a pressure regulating channel, and the joint is also provided with a two-way valve for opening or closing the pressure regulating channel; the pressure regulating part is used for regulating the pressure of the fluid in the elastic sealing ring body.
3. The sealing device of claim 2, wherein the pressure regulator is a syringe.
4. The sealing device according to claim 3, wherein the syringe is provided with scale marks for indicating the size of the inner diameter of the elastic sealing ring body.
5. The sealing device of claim 1, wherein the pressure adjustment mechanism comprises:
the inner end of the connecting pipe is connected with the sealing ring body;
the pressure regulator is connected with the outer end of the connecting pipe; the pressure regulator is used for regulating the pressure of the fluid in the elastic sealing ring body.
6. The sealing device of claim 5, wherein the pressure regulator comprises:
a housing connected to the connection pipe; the inner cavity of the shell is communicated with the inner cavity of the elastic sealing ring body;
the pressure regulating structure is movably matched with the inner wall of the shell in a sealing way; the shell is also provided with a locking piece matched with the pressure regulating structure.
7. A sealing arrangement according to claim 6, wherein the housing is integral with the connecting tube, the housing further having an opening and a sealing plug for sealing the opening.
8. The sealing device of claim 1, wherein the resilient seal ring body is enclosed in a shape of a circular tube or a dumbbell; or the inner surface of the elastic sealing ring body is wavy; or the inner surface of the elastic sealing ring body is formed by connecting a plurality of cambered surfaces which are distributed along the circumferential direction and protrude towards the center direction of the elastic sealing ring body.
9. The sealing device of claim 1, wherein the pressure adjustment mechanism is coupled to a side of the elastomeric seal ring body.
10. A sheath comprising a sheath body and a sealing device as claimed in any one of claims 1 to 9;
the elastic sealing ring body of the sealing device is arranged at the near end of the sheath tube body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022681967.4U CN213685257U (en) | 2020-11-19 | 2020-11-19 | Sealing device and sheath tube comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022681967.4U CN213685257U (en) | 2020-11-19 | 2020-11-19 | Sealing device and sheath tube comprising same |
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| Publication Number | Publication Date |
|---|---|
| CN213685257U true CN213685257U (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022681967.4U Active CN213685257U (en) | 2020-11-19 | 2020-11-19 | Sealing device and sheath tube comprising same |
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| CN (1) | CN213685257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113974775A (en) * | 2021-11-17 | 2022-01-28 | 上海腾复医疗科技有限公司 | Sheath sealing device and thrombus suction system comprising same |
-
2020
- 2020-11-19 CN CN202022681967.4U patent/CN213685257U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113974775A (en) * | 2021-11-17 | 2022-01-28 | 上海腾复医疗科技有限公司 | Sheath sealing device and thrombus suction system comprising same |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220720 Address after: 518000 1517, building 10, Biomedical Innovation Industrial Park, No. 14, Jinhui Road, Jinsha community, Kengzi street, Pingshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen tengfu Medical Technology Co.,Ltd. Address before: Room 302-2, building 1, No. 158, Xinjun Ring Road, Minhang District, Shanghai, 201114 Patentee before: Shanghai tengfu Medical Technology Co.,Ltd. |