CN112401973A - Multifunctional sheath tube - Google Patents
Multifunctional sheath tube Download PDFInfo
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- CN112401973A CN112401973A CN202011302839.2A CN202011302839A CN112401973A CN 112401973 A CN112401973 A CN 112401973A CN 202011302839 A CN202011302839 A CN 202011302839A CN 112401973 A CN112401973 A CN 112401973A
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- sheath
- sealing ring
- ring body
- pressure
- connecting piece
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- 238000007789 sealing Methods 0.000 claims abstract description 99
- 208000007536 Thrombosis Diseases 0.000 claims abstract description 68
- 230000001105 regulatory effect Effects 0.000 claims description 47
- 239000002861 polymer material Substances 0.000 claims description 20
- 230000007704 transition Effects 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 9
- 230000000452 restraining effect Effects 0.000 claims description 4
- 238000009941 weaving Methods 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 9
- 238000009940 knitting Methods 0.000 description 7
- 238000013156 embolectomy Methods 0.000 description 6
- 210000004204 blood vessel Anatomy 0.000 description 5
- 238000013151 thrombectomy Methods 0.000 description 5
- 238000009954 braiding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
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- 239000000243 solution Substances 0.000 description 3
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- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- ZONODCCBXBRQEZ-UHFFFAOYSA-N platinum tungsten Chemical compound [W].[Pt] ZONODCCBXBRQEZ-UHFFFAOYSA-N 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22038—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with a guide wire
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22079—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with suction of debris
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
- A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention relates to the technical field of medical instruments and discloses a multifunctional sheath tube. This sheath pipe includes: a sheath body; the connecting piece is arranged at the proximal end of the sheath tube body; the connecting piece comprises a connecting piece shell connected with the sheath tube body and a three-way valve arranged on the connecting piece shell; the three-way valve is in sealing fit with the connecting piece shell; a thrombus aspiration assembly coupled to the connector housing; an instrument introduction channel is formed between the sheath tube body and the connecting piece shell, and a thrombus suction channel is formed between the sheath tube body, the connecting piece shell and the thrombus suction assembly; the three-way valve is used for alternatively opening the instrument introducing channel or the thrombus suction channel. The embodiment of the invention not only can be independently used as an introducing sheath tube, but also has the function of sucking thrombus, thereby reducing the steps of thrombus removal operation and improving the operation efficiency.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a multifunctional sheath tube.
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. In the case of endovascular thrombectomy, the mainstream minimally invasive interventional therapy method requires mechanical thrombectomy using a thrombectomy stent and an aspiration catheter, and the thrombectomy stent and the aspiration catheter must be used together with an introduction sheath for introduction. At present, the most advanced embolectomy operation mode is that an embolectomy bracket and a suction catheter are used jointly, three instruments, namely a guiding sheath tube, an embolectomy bracket and the suction catheter, must be used in the prior art to complete the joint embolectomy operation, and operation steps influence operation efficiency.
In addition, when the conventional introduction sheath is introduced or passed through a tubular surgical instrument, a seal ring is generally required to be provided at the proximal end of the sheath to prevent blood from oozing out. The inventor finds that the sealing ring adopted in the related technology has a simpler structure and is not beneficial to the leading-in operation of surgical instruments with different specifications.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a multifunctional sheath which can be used alone as an introduction sheath and has a thrombus aspiration function, thereby reducing the number of steps for a thrombus extraction operation and improving the operation efficiency.
In order to solve the above technical problem, an embodiment of the present invention provides a multifunctional sheath, including:
a sheath body;
the connecting piece is arranged at the proximal end of the sheath tube body; the connecting piece comprises a connecting piece shell connected with the sheath tube body and a three-way valve arranged on the connecting piece shell; the three-way valve is in sealing fit with the connecting piece shell;
a thrombus aspiration assembly coupled to the connector housing;
an instrument introduction channel is formed between the sheath tube body and the connecting piece shell, and a thrombus suction channel is formed between the sheath tube body, the connecting piece shell and the thrombus suction assembly; the three-way valve is used for alternatively opening the instrument introducing channel or the thrombus suction channel.
Compared with the prior art, the sheath tube body is provided with the connecting piece shell at the near end, the thrombus suction assembly is connected with the connecting piece shell, so that a thrombus suction channel is formed among the sheath tube body, the connecting piece shell and the thrombus suction assembly, an instrument introduction channel is formed between the connecting piece shell and the sheath tube body, and when one of the thrombus suction channel or the instrument introduction channel is opened, the other one is disconnected through the three-way valve arranged on the connecting piece shell, so that the sheath tube of the embodiment not only can be independently used as the introduction sheath tube, but also can have a thrombus suction function on the basis of the function of the introduction sheath tube, can be used as a treatment type instrument, can be used for eliminating the thrombus suction catheter in the combined embolectomy and other surgeries, reduces the surgical operation steps and improves the surgical efficiency.
As an example, the thrombus aspiration assembly comprises:
the inner end of the suction pipe is connected with the connecting piece shell, and the outer end of the suction pipe is provided with a negative pressure suction joint; the negative pressure suction joint is connected with a negative pressure suction device;
the thrombus suction assembly further comprises a suction valve which is arranged on the negative pressure suction joint and is used for controlling the opening or closing of the suction tube.
As an embodiment, the sheath further comprises: a sealing device; the sealing device includes:
the sealing ring body is arranged at the inlet end of the connecting piece shell 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.
As an embodiment, the pressure adjusting mechanism includes:
the inner end of the connecting pipe is connected with the sealing ring body;
the pressure regulating connector is connected with a pressure regulating part, the pressure regulating connector and the connecting pipe form a pressure regulating channel, and a pressure regulating valve for opening or closing the pressure regulating channel is further arranged on the pressure regulating connector; the pressure regulating part is used for regulating the pressure of the fluid in the elastic sealing ring body.
As an embodiment, the pressure adjusting mechanism includes:
the inner end of the pressure regulator is connected with the sealing ring body;
the pressure regulator includes:
the pressure regulator shell is integrally connected with the connecting pipe; the inner cavity of the pressure regulator 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 pressure regulator shell in a sealing way;
still be equipped with on the voltage regulator casing with pressure regulating structure complex lock piece, perhaps the pressure regulator still including set up in just be used for controlling on the voltage regulator casing the two-way valve of connecting pipe break-make.
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 sheath body includes a polymer material inner layer, a polymer material outer layer, and a developing ring, a spring structure, a braiding transition structure and an elastic braiding structure disposed between the polymer material inner layer and the polymer material outer layer;
the developing ring, the spring structure, the weaving transition structure and the elastic weaving structure are sequentially arranged from the far end to the near end; or at least a portion of the spring structure radially overlaps the woven transition structure;
the rigidity of the spring structure is less than that of the woven transition structure, and the rigidity of the woven transition structure is less than that of the elastic woven structure.
As an embodiment, the outer layer of polymer material and/or the inner layer of polymer material includes a plurality of segments, and the hardness of each segment increases from far to near in sequence.
As an embodiment, the multifunctional sheath tube further comprises a sheath tube core capable of being arranged in the sheath tube body in a penetrating manner, and the distal end of the sheath tube core is provided with an elastic binding bag;
the sheath body distal end is provided with the radial elasticity inflation and centrosymmetric net dish, the net dish can be accomodate in the elasticity constraint bag.
As an example, the three-way valve is a rotary valve.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is 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 view of a multifunctional sheath according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a multifunctional sheath according to a first embodiment of the present invention;
fig. 3 is a schematic structural view of a connector of a multifunctional sheath according to a first embodiment of the present invention;
fig. 4a is a schematic view illustrating an opened state of the connector of the multifunctional sheath according to the first embodiment of the present invention;
FIG. 4b is a schematic cross-sectional view of the connector shown in FIG. 4 a;
fig. 5a is a schematic view illustrating another opened state of the connector of the multifunctional sheath according to the first embodiment of the present invention;
FIG. 5b is a schematic cross-sectional view of the connector shown in FIG. 5 a;
fig. 6 is a schematic structural view of a sheath body of the multifunctional sheath according to the first embodiment of the present invention;
fig. 7 is a schematic structural view of a sheath core (not accommodating a mesh plate) of the multifunctional sheath according to the first embodiment of the present invention;
fig. 8 is a schematic structural view illustrating a sheath core accommodated in a mesh tray of a sheath body according to a first embodiment of the present invention;
fig. 9 is a schematic structural view of the sheath body according to the first embodiment of the present invention after the mesh disc is released;
fig. 10a is a schematic structural view illustrating a sealing ring body of a multifunctional sheath according to a second embodiment of the present invention before filling;
FIG. 10b is a schematic view of the seal ring body of FIG. 10a after filling;
fig. 11 is a schematic structural view of a sealing device for a multifunctional sheath according to a second embodiment of the present invention;
FIG. 12 is a schematic view of the sealing device of FIG. 11 in use with a syringe;
fig. 13 is a schematic structural view of a sealing device for a multifunctional sheath according to a second embodiment of the present invention;
FIG. 14 is a schematic view of a further state of the sealing device shown in FIG. 13;
fig. 15a and 15b are schematic transverse and longitudinal views of a sealing ring body of a multifunctional sheath according to a second embodiment;
fig. 16a and 16b are schematic transverse and longitudinal views of a sealing ring body of a multifunctional sheath according to a second embodiment;
fig. 17a and 17b are schematic transverse and longitudinal views of a sealing ring body of a multifunctional sheath according to a second embodiment;
fig. 18a and 18b are schematic transverse and longitudinal views of a sealing ring body of a multifunctional sheath according to a second embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present invention in its various embodiments. However, the technical solution claimed in the present invention can be implemented 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 invention 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.
The first embodiment of the invention provides a multifunctional sheath tube which is suitable for intravascular interventional embolectomy treatment. As shown in fig. 1 to 9, the multifunctional sheath includes: sheath pipe body 1, set up in the connecting piece 2 of sheath pipe body 1 near-end. The connector 2 includes a connector housing 20 connected to the sheath body 1 and a three-way valve 21 provided on the connector housing 20. The three-way valve 21 is sealingly engaged with the coupling housing 20. The multifunctional sheath further comprises a thrombus aspiration assembly 3 connected with the connector housing 20. An instrument introduction channel is formed between the sheath tube body 1 and the connector housing 20, a thrombus suction channel is formed between the sheath tube body 1, the connector housing 20 and the thrombus suction assembly 3, and the three-way valve 21 is used for alternatively opening the instrument introduction channel or the thrombus suction channel. The multifunctional sheath tube of the embodiment controls one of the thrombus suction channel or the instrument introduction channel to be opened and the other to be disconnected through the three-way valve arranged on the connecting piece shell, so that the sheath tube of the embodiment can be independently used as an introduction sheath tube when the thrombus suction channel is disconnected, and can be used as a thrombus suction catheter when the instrument introduction channel is disconnected, thereby being used as a therapeutic instrument. Therefore, the embodiment can eliminate the use of the thrombus suction catheter in the combined thrombus extraction operation and the like, reduce the operation steps and improve the operation efficiency. The structure of each component, and the positional relationship, connection relationship, and function between them will be described one by one.
Alternatively, in the present embodiment, as shown in fig. 2, the thrombus aspiration assembly 3 may include: a suction pipe 30 whose inner end is connected with the connector housing 20, the outer end of the suction pipe 30 is provided with a negative pressure suction joint 31, and the negative pressure suction joint 31 is connected with a negative pressure suction device (not shown). The thrombus aspiration assembly 3 further comprises an aspiration valve 32 disposed on the negative pressure aspiration connector 31 and used for controlling the opening or closing of the aspiration tube 30. Specifically, the negative pressure suction device may be a syringe with a large suction force, or other suction pump, etc., and the negative pressure suction connector may be selected according to the type of connector of the negative pressure suction device. The suction valve may be a two-way valve structure or other valve-like structures known to those skilled in the art, as long as the function of the suction valve of the present embodiment can be achieved. The present example is not intended to be limiting in any way as to the implementation of the various components of the thrombus aspiration assembly.
Fig. 3 is a schematic view of the connection structure of the sheath body 1, the connecting member 2 and the thrombus aspiration module 3. Alternatively, in this embodiment, the three-way valve 21 may be a rotary valve, and the rotary valve is in sealing fit with the connector housing 20, so that a certain air tightness exists between the connector housing 20 and the three-way valve 21. The three-way valve 21 is used for controlling the thrombus aspiration channel or the instrument introduction channel to be alternately opened or closed. The instrument introduction channel axially penetrates through the sheath tube body 1 and the connector housing 20, and can be used for introducing various surgical instruments which need to be introduced by means of the sheath tube, including but not limited to balloon catheters, thrombus removal stents and the like. The thrombus suction channel comprises an inner cavity of the sheath tube body 1, an inner cavity of the connecting piece shell 20 and an inner cavity of the suction tube 30, and the suction function of thrombus is realized through the thrombus suction channel.
Alternatively, in this embodiment, the rotary valve handle has two positions, as shown in FIGS. 4a and 4b, when the rotary valve handle is axially parallel to the sheath body 1, the device introducing passage is opened and the thrombus suction passage is disconnected, and the multifunctional sheath can be used alone as the introducing sheath. For example, the sheath core may be threaded into the sheath body to deliver the sheath to the thrombus site. As shown in FIGS. 5a and 5b, when the rotary valve handle is axially perpendicular to the sheath body 1, the thrombus aspiration channel is opened and the instrument introduction channel is closed, and at this time, the multifunctional sheath can be used for thrombus aspiration.
It should be noted that, as shown in fig. 6, in the present embodiment, the sheath body 1 may include a polymer inner layer, a polymer outer layer, and a developing ring 11, a spring structure 12, a braiding transition structure 13, and an elastic braiding structure 14 disposed between the polymer inner layer and the polymer outer layer. The developing ring 11, the spring structure 12, the knitting transition structure 13 and the elastic knitting structure 14 are arranged in sequence from the far end to the near end, the rigidity of the spring structure 12 is smaller than that of the knitting transition structure 13, and the rigidity of the knitting transition structure 13 is smaller than that of the elastic knitting structure 14. In this embodiment, the metal layer formed by the developing ring 11, the spring structure 12, the knitting transition structure 13, and the elastic knitting structure 14 forms a three-layer composite structure with the polymer material inner layer and the polymer material outer layer. It is worth mentioning that in some examples, at least a portion of the spring structure 12 may radially overlap the braided transition structure 13 to form a spring braided transition structure. In particular, the spring structure 12 and the braided transition structure 13 may have a partial radial overlap, or may completely overlap. In some examples, a spring weave transition structure may be used instead of the elastic weave structure, all without limitation. The developing ring 11 can be made of developing materials such as platinum-iridium alloy, platinum-tungsten alloy or gold, and the spring structure 12 and the braided transition structure 13 can be made of materials such as stainless steel and nickel titanium. Further, the spring structure may be wound from one spring wire or from a plurality of spring wires. The spring structure has better rebound resilience and is not easy to bend, and the elastic braided structure has higher rigidity and is convenient for conveying the sheath tube. The high polymer material inlayer can adopt the PTFE material, is favorable to reducing sheath pipe body inner chamber frictional force.
Optionally, the polymer material outer layer and/or the polymer material inner layer may include a plurality of segments, and the hardness of each segment increases sequentially from far to near, that is, the polymer material outer layer and/or the polymer material inner layer may be a segmented structure with different hardness, and the number of segments may be determined in advance according to the blood vessel characteristics and the lesion requirements. For example, the outer layer of the polymer material may include 2 segments with different hardness, the hardness of the segment near the end of the developing ring is small, such as 25D, and the hardness of the segment near the end of the connecting member is large, such as 72D.
Optionally, in this embodiment, as shown in fig. 7 to 9, the multifunctional sheath may further include a sheath core 4 capable of being inserted into the sheath body 1, an elastic constraining bag 40 is disposed at a distal end of the sheath core 4, a mesh disk 10 capable of elastically expanding in a radial direction and being symmetric in a center is disposed at a distal end of the sheath body 1, the mesh disk 10 may be circular or elliptical, and the mesh disk 10 may be accommodated in the elastic constraining bag 40. Specifically, one side of the mesh disk 10 close to the developing ring 11 may be a free end, and the other side is connected to the surface of the sheath body 1. The net disk 10 can be woven by using super-elastic alloy wires and has self-expansion property. As shown in fig. 8, in the initial state, the mesh disk 10 is compressed and stored in the restraining bag 40 at the distal end of the sheath core 4, and is in close contact with the surface of the sheath body 1. When the net disc 10 needs to be released, the sheath tube body 1 is fixed, and the sheath tube core 4 is pushed forwards, so that the net disc 10 can be released. As shown in fig. 9, the mesh disc 10 can cling to the vessel wall after being released, so that the sheath is ensured to be positioned at the central axis of the vessel cavity. After the mesh disk 10 is released, the restraining bag 40 at the front end of the sheath core 4 can be automatically retracted, as shown in fig. 7.
It should be noted that, in some examples, the connector housing may further include a suction tube connector, the suction tube being threadedly connected to the suction tube connector, and the connector further includes a screw cap threadedly connected to the suction tube connector, so that the thrombus aspiration assembly can be removed for recycling when the sheath tube is used only as an introduction sheath tube, while the housing is sealed by the screw cap.
Compared with the prior art, the multifunctional sheath tube of the embodiment controls one of the thrombus suction channel or the instrument introduction channel to be opened and the other to be disconnected through the three-way valve, so that the sheath tube of the embodiment can be independently used as an introduction sheath tube when the thrombus suction channel is disconnected, and can be used as a thrombus suction catheter when the instrument introduction channel is disconnected, thereby being used as a therapeutic instrument. Therefore, the embodiment can eliminate the use of the thrombus suction catheter in the thrombus removal operation, reduce the operation steps and improve the operation efficiency and the treatment effect.
The second embodiment of the present invention further provides a multifunctional sheath, which is an improvement on the above embodiments, and the main improvement is that a sealing device capable of adjusting the inner diameter of the sealing ring is disposed at the proximal end of the connecting member, so that the sheath can be conveniently introduced into instruments of different specifications.
The multifunctional sheath of the embodiment comprises: sheath pipe body, connecting piece and thrombus suction subassembly. The sheath body, the connecting member and the thrombus aspiration assembly are implemented in the same manner as the first embodiment, and are not described herein again. As shown in fig. 10a and 10b, the multifunctional sheath of the present embodiment further includes: a sealing device 5, the sealing device 5 comprising: elastic sealing ring body 50 and the pressure adjustment mechanism who is connected with sealing ring body 50. The seal body 50 is disposed at the inlet end of the connector housing 20 for engaging a sheath through a tubular structure. And the pressure adjusting mechanism is used for adjusting the fluid pressure in the elastic sealing ring body 50 so as to control the radial expansion and contraction of the sealing ring body 50.
Fig. 10a is a schematic view showing the structure of the sealing ring body 50 before filling with the fluid, and fig. 10b is a schematic view showing the structure of the sealing ring body 50 after filling with the fluid. The sealing ring body 50 is made of elastic materials, when more fluid is filled in the sealing ring body, the pressure in the sealing ring body 50 is increased, the radial expansion of the sealing ring body 50 enables the inner diameter of the sealing ring body to be reduced, otherwise, when less fluid is filled in the sealing ring body, the pressure in the sealing ring body 50 is reduced, and the radial retraction of the sealing ring body 50 enables the inner diameter of the sealing ring body to be increased.
Alternatively, in this embodiment, as shown in fig. 11 and 12, the pressure adjusting mechanism may include: the inner end of the pressure regulating joint 52 is connected with the pressure regulating connector 52, the pressure regulating connector 52 is connected with the outer end of the sealing ring body 50, the pressure regulating connector 52 is connected with the pressure regulating part 54, the pressure regulating connector 52 and the connecting pipe 51 form a pressure regulating channel, the pressure regulating connector 52 is further provided with a pressure regulating valve 53 for opening or closing the pressure regulating channel, and the pressure regulating part is used for regulating the pressure of fluid in the elastic sealing ring body 50. In this embodiment, the elastic sealing ring body 50, the connecting pipe 51 and the pressure regulating joint 52 may be an integral piece, and the elastic sealing ring body 50 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 sealing ring body 50, that is, the connection pipe 51 may extend from the side surface of the sealing ring body 50, but not limited thereto, the connection pipe 51 may also extend from the outer end surface of the sealing ring body 50. The pressure regulating valve 53 may be implemented by a structure known to those skilled in the art to control the opening and closing of the pipe, and is not particularly limited herein. By way of example and not limitation, the pressure regulating member 54 may be a syringe in this embodiment. Furthermore, the syringe is provided with scale marks for prompting the inner diameter of the elastic sealing ring body 50. As shown in fig. 12, 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 liquid pressure in the sealing ring body needs to be increased, the pressure regulating valve can be opened, a certain amount of liquid can be injected into the sealing ring body, and then the pressure regulating valve can be closed; similarly, when the pressure of the liquid in the sealing ring body needs to be reduced, the pressure regulating valve can be opened, so that part of the liquid of the sealing ring body is discharged into the syringe, and the inner diameter of the sealing ring body is controlled by controlling the volume of the liquid entering the sealing ring 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. As shown in fig. 13 and 14, the pressure adjusting mechanism may include: a connection pipe 51 having an inner end connected to the sealing ring body 50, and a pressure regulator connected to an outer end of the connection pipe 51. Optionally, the pressure regulator may comprise: and a pressure regulator shell 56 integrally connected with the connecting pipe 51, wherein the inner cavity of the pressure regulator shell 56 is communicated with the inner cavity of the elastic sealing ring body 50. The pressure regulating structure 55 is movably and hermetically matched with the inner wall of the pressure regulator shell 56, and a locking piece (not shown) matched with the pressure regulating structure is further arranged on the pressure regulator shell 56. Alternatively, in some examples, the pressure regulator may further include a two-way valve disposed on the regulator housing for controlling the connection pipe 51 to be opened or closed, so that the locking member may be eliminated and the pressure inside the sealing ring body 50 may be maintained. In this embodiment, pressure regulating structure 55 can be for the piston that has the handle, piston and the sealed cooperation of voltage regulator shells inner wall activity, and the locking piece is used for locking the piston in the specific position of voltage regulator casing, for example, can set up the breach on hand, and the locking piece on the voltage regulator casing can be rotatable dog, and when the dog screw in breach was interior, the piston was located on the voltage regulator casing, and this embodiment does not do specific restriction to the implementation of locking piece. In this embodiment, a certain amount of liquid or gas of certain pressure can be preloaded in the pressure regulator casing, as shown in fig. 13, 14, thereby change the volume of the liquid or the gas that gets into the sealing washer body through changing the position of pressure regulating structure to control the radial dimension of sealing washer body.
As an embodiment, in this embodiment, the regulator housing 56 and the connecting pipe 51 may be an integral piece, and the regulator 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 regulator housing through the opening of the regulator housing, and after the injection is finished, the opening is sealed by the sealing plug.
On the basis of the above embodiment, optionally, in this embodiment, as shown in fig. 16a and 16b, 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 50, 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 has a petal-shaped sealing cavity.
As an alternative, as shown in fig. 17a and 17b, the elastic sealing ring body 50 may be formed in a circular tube shape to facilitate introduction of a circular tube-shaped surgical instrument, such as a catheter.
As a further alternative, as shown in fig. 18a and 18b, the inner surface of the elastic sealing ring body 50 may be wavy, so as to ensure the sealing property, and at the same time, reduce the contact area between the sealing ring body 50 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. 15a and 15b, the elastic sealing ring body 50 may be formed in a dumbbell shape, which also facilitates the introduction of the instrument.
Compared with the prior art, the multifunctional sheath tube of the embodiment controls one of the thrombus suction channel or the instrument introduction channel to be opened and the other to be disconnected through the three-way valve, so that the sheath tube of the embodiment can be independently used as an introduction sheath tube when the thrombus suction channel is disconnected, and can be used as a thrombus suction catheter when the instrument introduction channel is disconnected, thereby being used as a therapeutic instrument. Therefore, the embodiment can eliminate the use of the thrombus suction catheter in the thrombus removal operation, reduce the operation steps and improve the operation efficiency and the treatment effect. In addition, the inner diameter of the sealing ring body can be properly adjusted according to the outer diameter of the instrument to be guided in, so that good sealing can be realized, blood extravasation in the operation process can be prevented, the operation difficulty in the process of guiding the surgical instrument can be reduced, instruments of different specifications can be conveniently and smoothly guided in, and convenience in operation can be improved.
With reference to fig. 1, the application method and steps of the multifunctional sheath according to the embodiment of the present invention are as follows:
in the thrombus clearing interventional operation treatment, an instrument interventional channel is established in the femoral artery (vein) vessel through a puncture needle, a puncture sheath, a guide wire and a contrast catheter. Guiding the catheter to the position of the blocked blood vessel through an intravascular interventional channel technology, and then carrying out selective radiography to determine the position of the blood vessel where the thrombus is. The replacement angiographic catheter is a super hard guide wire (the guide wire is introduced and then withdrawn from the catheter). The rotary valve of the multifunctional sheath tube provided by the embodiment of the invention is rotated until the instrument introduction channel is opened, the sheath tube core is inserted into the sheath tube body, the net disc at the distal end of the sheath tube body is accommodated in the abdominal restraining bag of the sheath tube core to form the introduction sheath tube, and the introduction sheath tube is introduced into the position of the blood vessel where the thrombus is located through the guide wire, so that the tube opening of the sheath tube is just contacted with the thrombus. The sheath tube core is taken out, and the rotary valve on the connecting piece is turned to the opening state of the thrombus suction channel. Connecting the negative pressure suction joint with an external suction negative pressure source, opening a suction valve and starting negative pressure suction. After the thrombus is taken out of the body, the sheath tube is taken out of the body, and the wound is sutured, thus completing the operation.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out 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 practice.
Claims (10)
1. A multifunctional sheath, comprising:
a sheath body;
the connecting piece is arranged at the proximal end of the sheath tube body; the connecting piece comprises a connecting piece shell connected with the sheath tube body and a three-way valve arranged on the connecting piece shell; the three-way valve is in sealing fit with the connecting piece shell;
a thrombus aspiration assembly coupled to the connector housing;
an instrument introduction channel is formed between the sheath tube body and the connecting piece shell, and a thrombus suction channel is formed between the sheath tube body, the connecting piece shell and the thrombus suction assembly; the three-way valve is used for alternatively opening the instrument introducing channel or the thrombus suction channel.
2. The multifunctional sheath of claim 1, wherein the thrombus aspiration assembly comprises:
the inner end of the suction pipe is connected with the connecting piece shell, and the outer end of the suction pipe is provided with a negative pressure suction joint; the negative pressure suction joint is connected with a negative pressure suction device;
the thrombus suction assembly further comprises a suction valve which is arranged on the negative pressure suction joint and is used for controlling the opening or closing of the suction tube.
3. The multifunctional sheath of claim 1, wherein said sheath further comprises: a sealing device; the sealing device includes:
the sealing ring body is arranged at the inlet end of the connecting piece shell 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.
4. The multifunctional sheath of claim 3, wherein the pressure adjustment mechanism comprises:
the inner end of the connecting pipe is connected with the sealing ring body;
the pressure regulating connector is connected with a pressure regulating part, the pressure regulating connector and the connecting pipe form a pressure regulating channel, and a pressure regulating valve for opening or closing the pressure regulating channel is further arranged on the pressure regulating connector; the pressure regulating part is used for regulating the pressure of the fluid in the elastic sealing ring body.
5. The multifunctional sheath of claim 3, wherein the pressure adjustment mechanism comprises:
the inner end of the pressure regulator is connected with the sealing ring body;
the pressure regulator includes:
the pressure regulator shell is integrally connected with the connecting pipe; the inner cavity of the pressure regulator 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 pressure regulator shell in a sealing way;
still be equipped with on the voltage regulator casing with pressure regulating structure complex lock piece, perhaps the pressure regulator still including set up in just be used for controlling on the voltage regulator casing the two-way valve of connecting pipe break-make.
6. The multifunctional sheath according to claim 3, wherein the elastic sealing ring body is enclosed 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.
7. The multifunctional sheath according to claim 1, wherein the sheath body comprises an inner polymer material layer, an outer polymer material layer, and a developing ring, a spring structure, a braided transition structure, and an elastic braided structure disposed between the inner polymer material layer and the outer polymer material layer;
the developing ring, the spring structure, the weaving transition structure and the elastic weaving structure are sequentially arranged from the far end to the near end; or at least a portion of the spring structure radially overlaps the woven transition structure;
the rigidity of the spring structure is less than that of the woven transition structure, and the rigidity of the woven transition structure is less than that of the elastic woven structure.
8. The multifunctional sheath according to claim 7, wherein the polymer material outer layer and/or the polymer material inner layer comprises a plurality of segments, and the hardness of each segment increases from far to near.
9. The multifunctional sheath of claim 1, further comprising a sheath core insertable within the sheath body, the sheath core having a distal end provided with a flexible restraining bag;
the sheath body distal end is provided with the radial elasticity inflation and centrosymmetric net dish, the net dish can be accomodate in the elasticity constraint bag.
10. The multifunctional sheath of claim 1, wherein the three-way valve is a rotary valve.
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| CN202011302839.2A CN112401973B (en) | 2020-11-19 | 2020-11-19 | Multifunctional sheath tube |
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| CN202011302839.2A CN112401973B (en) | 2020-11-19 | 2020-11-19 | Multifunctional sheath tube |
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| CN112401973B CN112401973B (en) | 2022-09-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113827312A (en) * | 2021-09-18 | 2021-12-24 | 晨兴(南通)医疗器械有限公司 | Conveying system for pulmonary artery thrombus taking device |
| 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 |
| CN113974776A (en) * | 2021-11-17 | 2022-01-28 | 上海腾复医疗科技有限公司 | Pusher and thrombus suction system comprising same |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5569164A (en) * | 1993-11-24 | 1996-10-29 | Delma Elektro- Und Medizinische Apparatebau Gesellschaft Mbh | Surgical laparoscopic apparatus |
| US6077248A (en) * | 1997-01-17 | 2000-06-20 | Zumschlinge; Rolf | Medical puncturing set |
| CN101843523A (en) * | 2010-05-28 | 2010-09-29 | 浙江舒友仪器设备有限公司 | Radio knife |
| CN202654521U (en) * | 2012-02-13 | 2013-01-09 | 北京迪玛克医药科技有限公司 | Medical vessel sheath |
| CN202715076U (en) * | 2012-06-19 | 2013-02-06 | 亓长静 | Flushing equipment |
| US20140024896A1 (en) * | 2012-07-18 | 2014-01-23 | Stephen West | Endoscope overtube for insertion through a natural body orifice |
| CN107374700A (en) * | 2017-08-28 | 2017-11-24 | 北京赛铂医药科技有限公司 | A kind of segmented thrombus is broken to take device |
| CN107961412A (en) * | 2018-01-08 | 2018-04-27 | 山东大学齐鲁医院 | The Improvement type blood transfusion apparatus rinsed for neurosurgery intervention diagnosis and therapy |
| CN108413152A (en) * | 2018-05-17 | 2018-08-17 | 苏州宝骅密封科技股份有限公司 | A kind of axial seal component |
| CN208388683U (en) * | 2017-08-16 | 2019-01-18 | 北京赛铂医药科技有限公司 | A kind of blood vessel proximal end protector |
| CN109498957A (en) * | 2018-12-19 | 2019-03-22 | 深圳市业聚实业有限公司 | A kind of novel microtubular |
| CN111256386A (en) * | 2018-11-30 | 2020-06-09 | 广东美芝精密制造有限公司 | Compressor and refrigerating system |
-
2020
- 2020-11-19 CN CN202011302839.2A patent/CN112401973B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5569164A (en) * | 1993-11-24 | 1996-10-29 | Delma Elektro- Und Medizinische Apparatebau Gesellschaft Mbh | Surgical laparoscopic apparatus |
| US6077248A (en) * | 1997-01-17 | 2000-06-20 | Zumschlinge; Rolf | Medical puncturing set |
| CN101843523A (en) * | 2010-05-28 | 2010-09-29 | 浙江舒友仪器设备有限公司 | Radio knife |
| CN202654521U (en) * | 2012-02-13 | 2013-01-09 | 北京迪玛克医药科技有限公司 | Medical vessel sheath |
| CN202715076U (en) * | 2012-06-19 | 2013-02-06 | 亓长静 | Flushing equipment |
| US20140024896A1 (en) * | 2012-07-18 | 2014-01-23 | Stephen West | Endoscope overtube for insertion through a natural body orifice |
| CN208388683U (en) * | 2017-08-16 | 2019-01-18 | 北京赛铂医药科技有限公司 | A kind of blood vessel proximal end protector |
| CN107374700A (en) * | 2017-08-28 | 2017-11-24 | 北京赛铂医药科技有限公司 | A kind of segmented thrombus is broken to take device |
| CN107961412A (en) * | 2018-01-08 | 2018-04-27 | 山东大学齐鲁医院 | The Improvement type blood transfusion apparatus rinsed for neurosurgery intervention diagnosis and therapy |
| CN108413152A (en) * | 2018-05-17 | 2018-08-17 | 苏州宝骅密封科技股份有限公司 | A kind of axial seal component |
| CN111256386A (en) * | 2018-11-30 | 2020-06-09 | 广东美芝精密制造有限公司 | Compressor and refrigerating system |
| CN109498957A (en) * | 2018-12-19 | 2019-03-22 | 深圳市业聚实业有限公司 | A kind of novel microtubular |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113827312A (en) * | 2021-09-18 | 2021-12-24 | 晨兴(南通)医疗器械有限公司 | Conveying system for pulmonary artery thrombus taking device |
| CN113827312B (en) * | 2021-09-18 | 2023-06-13 | 晨兴(南通)医疗器械有限公司 | Delivery system for pulmonary artery embolectomy |
| 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 |
| CN113974776A (en) * | 2021-11-17 | 2022-01-28 | 上海腾复医疗科技有限公司 | Pusher and thrombus suction system comprising same |
| WO2023087458A1 (en) * | 2021-11-17 | 2023-05-25 | 上海腾复医疗科技有限公司 | Sheath sealing apparatus and thrombus aspiration system comprising same |
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| CN112401973B (en) | 2022-09-27 |
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