CN110037759B - Adjustable open-ended catheter sheath - Google Patents
Adjustable open-ended catheter sheath Download PDFInfo
- Publication number
- CN110037759B CN110037759B CN201910458317.2A CN201910458317A CN110037759B CN 110037759 B CN110037759 B CN 110037759B CN 201910458317 A CN201910458317 A CN 201910458317A CN 110037759 B CN110037759 B CN 110037759B
- Authority
- CN
- China
- Prior art keywords
- hemostatic valve
- sheath tube
- tube seat
- cap
- sheath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000002439 hemostatic effect Effects 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 210000004204 blood vessel Anatomy 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000002792 vascular Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000013152 interventional procedure Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
- A61B17/3423—Access ports, e.g. toroid shape introducers for instruments or hands
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3462—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3498—Valves therefor, e.g. flapper valves, slide valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00743—Type of operation; Specification of treatment sites
- A61B2017/00778—Operations on blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3462—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals
- A61B2017/3464—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals with means acting on inner surface of valve or seal for expanding or protecting, e.g. inner pivoting fingers
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pathology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an adjustable-opening catheter sheath which comprises a sheath tube seat, wherein the lower end of the sheath tube seat is connected with a fixed sheath tube, the upper end of the sheath tube seat is provided with a hemostatic valve, a hemostatic valve fixer, a spring and a cap, and the side end of the sheath tube seat is sequentially connected with an extension tube and a three-way connecting valve. The whole catheter sheath is axially provided with a channel which can enable other interventional instruments to enter. The invention relates to a catheter sheath, which is mainly used for expanding a percutaneous puncture incision and establishing a channel for other interventional instruments to enter a blood vessel in the interventional operation process.
Description
Technical Field
The invention relates to a medical device for vascular intervention operation, in particular to an opening-adjustable catheter sheath, and belongs to the field of vascular intervention treatment.
Background
In vascular interventional procedures, a catheter sheath is used to enlarge a percutaneous incision during interventional procedures and to create a passageway for other interventional instruments to enter the vessel.
As shown in FIG. 1, in the prior art, a medical common catheter sheath (patent publication No. CN204840602U, CN204601342U, etc.), other interventional instruments require a hemostatic valve that is closed by itself by inserting and opening the catheter sheath.
Disclosure of Invention
The invention aims to provide an opening-adjustable catheter sheath, which can open a built-in closed hemostatic valve by itself and can adjust the size of an opening, other interventional instruments enter through the opened hemostatic valve, thereby avoiding the head end damage of the other interventional instruments, shortening the operation time and reducing the operation risk.
The invention aims at realizing the following technical scheme:
The invention discloses an adjustable-opening catheter sheath, which comprises a sheath tube seat, wherein the lower end of the sheath tube seat is connected with a fixed sheath tube, the upper end of the sheath tube seat is provided with a hemostatic valve, a hemostatic valve fixer, a spring and a cap, the side end of the sheath tube seat is sequentially connected with an extension tube and a three-way connecting valve, and a channel which can enable other interventional instruments to enter is axially arranged in the whole catheter sheath.
According to the technical scheme provided by the content, the catheter sheath with the adjustable opening can be opened by the self to close the hemostatic valve and adjust the size of the opening in the interventional operation process outside the application range of the product, other interventional instruments can enter through the opened hemostatic valve, the head end damage of other interventional instruments is avoided, the operation time is shortened, and the operation risk is reduced.
Drawings
Fig. 1 is a schematic view of a typical catheter sheath structure in the prior art.
Fig. 2 is a schematic view of an adjustable opening catheter sheath according to an embodiment of the present invention.
Fig. 3 is an enlarged partial schematic view of an adjustable opening catheter sheath according to an embodiment of the present invention.
In the figure:
1-1: sheath tube, 1-2: sheath tube holder, 1-3: hemostatic valve, 1-4: cap, 1-5: extension tube, 1-6: three-way connecting valve, 1-7: and a protective sleeve.
2-1: Sheath tube, 2-2: sheath tube holder, 2-3: hemostatic valve, 2-4: cap, 2-5: hemostatic valve holder, 2-6: spring, 2-7: extension tube, 2-8: three-way connecting valve, 2-9: protective sleeve, 2-2-1: clasp (sheath tube base), 2-4-1: hollow valve opening cone (cap), 2-4-2: clasp (cap).
Detailed Description
Embodiments of the present invention will be described in further detail below. What is not described in detail in the embodiments of the present invention belongs to the prior art known to those skilled in the art.
The invention relates to an adjustable opening catheter sheath, which comprises the following preferred specific embodiments:
The hemostatic valve comprises a sheath tube seat, wherein the lower end of the sheath tube seat is connected with a fixed sheath tube, the upper end of the sheath tube seat is provided with a hemostatic valve, a hemostatic valve fixer, a spring and a cap, the side end of the sheath tube seat is sequentially connected with an extension tube and a three-way connecting valve, and a channel which can enable other interventional instruments to enter is axially formed in the whole catheter tube.
The hemostatic valve is assembled between the sheath tube seat and the hemostatic valve fixer, the hemostatic valve fixer is connected to the sheath tube seat through welding or glue, the hemostatic valve material is elastic material, and the hemostatic valve fixer presses the hemostatic valve of the elastic material in an interference mode.
The hemostatic valve material is silica gel or rubber or TPU.
The sheath tube seat is connected with the cap through a buckle interlocking mode, and the cap and the sheath tube seat can move in the axial direction.
The lower end of the cap is provided with a hollow valve opening cone structure, the valve opening cone structure at the lower end of the cap opens the hemostatic valve, and the opening size of the hemostatic valve is regulated.
The spring is arranged between the sheath tube seat and the cap, and after the pressure is released, the cap is reset under the action of the spring.
According to the catheter sheath with the adjustable opening, the built-in closed hemostatic valve can be opened by the catheter sheath, the opening size can be adjusted, other interventional instruments enter through the opened hemostatic valve, the head end of the other interventional instruments is prevented from being damaged, the operation time is shortened, and the operation risk is reduced.
Specific examples:
As shown in fig. 2 and 3, the sheath tube 2-1 is assembled on the sheath tube seat 2-2 to form a channel for other interventional instruments to enter a blood vessel;
The extension tube 2-7 is respectively connected with the sheath tube seat 2-2 and the three-way connecting valve 2-8 through glue;
The protective sleeve 2-9 is assembled on the sheath tube seat 2-2 through a buckle to prevent the sheath tube 2-1 from bending and blocking in the using process;
The hemostatic valve 2-3 is assembled between the sheath tube seat 2-2 and the hemostatic valve fixer 2-5, the hemostatic valve fixer 2-5 is connected to the sheath tube seat 2-2 through welding or glue, and the hemostatic valve 2-3 is pressed by interference, and the hemostatic valve 2-3 is made of silica gel, rubber, TPU or other materials, so that the hemostatic valve 2-3 is kept sealed;
the sheath tube seat 2-2 is in interlocking connection with the cap 2-4 through the buckles (2-2-1 and 2-4-2), and the cap 2-4 can move relative to the sheath tube seat 2-2 in the axial direction; the cap 2-4 is provided with a hollow valve opening cone 2-4-1 structure, after the cap 2-4 is pressed to move relative to the sheath tube seat 2-2, the valve opening cone 2-4-1 can open the hemostatic valve 2-3, so that other interventional instruments are inserted into the hollow valve opening cone 2-4-1 to enter a blood vessel through the hemostatic valve 2-3, and the opening size of the hemostatic valve is controlled through the distance of the cap 2-4;
a spring 2-6 is assembled between the sheath tube seat 2-2 and the cap 2-4, and after the cap 2-4 is pressed and then the pressure is released, the cap 2-4 can automatically rebound, and the hemostatic valve 2-3 is kept in a closed state to prevent blood backflow.
The realization of the functions:
as shown in fig. 2 and 3, before other interventional instruments enter the catheter sheath, the cap 2-4 is pressed, the hollow valve opening cone 2-4-1 on the cap 2-4 can automatically open the hemostatic valve 2-3, and the opening size of the hemostatic valve 2-3 is controlled by the pressing distance; after other interventional instruments pass through the hollow valve opening cone 2-4-1 and pass through the hemostatic valve 2-3, the pressure is released, the cover cap 2-4 can automatically rebound, the hemostatic valve 2-3 can be automatically closed, the surfaces of other interventional instruments are attached to form a seal, and blood backflow is prevented.
The invention has the beneficial effects that:
The invention provides an opening-adjustable catheter sheath, which can open a built-in closed hemostatic valve by itself, can adjust the size of an opening, and can prevent other interventional instruments from being damaged at the head end of the other interventional instruments by entering the opening hemostatic valve, thereby shortening the operation time and reducing the operation risk.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (2)
1. The catheter sheath with the adjustable opening is characterized by comprising a sheath tube seat, wherein the lower end of the sheath tube seat is connected with a fixed sheath tube, the upper end of the sheath tube seat is provided with a hemostatic valve, a hemostatic valve fixer, a spring and a cap, the side end of the sheath tube seat is sequentially connected with an extension tube and a three-way connecting valve, and a channel which can enable other interventional instruments to enter is axially arranged in the whole catheter sheath;
The hemostatic valve is assembled between the sheath tube seat and the hemostatic valve fixer, the hemostatic valve fixer is connected to the sheath tube seat through welding or glue, the hemostatic valve material is elastic material, and the hemostatic valve fixer presses the hemostatic valve of the elastic material in an interference manner;
The sheath tube seat is connected with the cap through a buckle in an interlocking way, and the cap and the sheath tube seat can move in the axial direction;
the lower end of the cap is provided with a hollow valve opening cone structure, the valve opening cone structure at the lower end of the cap opens the hemostatic valve, and the opening size of the hemostatic valve is regulated;
the spring is arranged between the sheath tube seat and the cap, and after the pressure is released, the cap is reset under the action of the spring.
2. The adjustable opening catheter sheath of claim 1, wherein the hemostatic valve material is silicone or rubber or TPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910458317.2A CN110037759B (en) | 2019-05-29 | 2019-05-29 | Adjustable open-ended catheter sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910458317.2A CN110037759B (en) | 2019-05-29 | 2019-05-29 | Adjustable open-ended catheter sheath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110037759A CN110037759A (en) | 2019-07-23 |
| CN110037759B true CN110037759B (en) | 2024-05-07 |
Family
ID=67283988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910458317.2A Active CN110037759B (en) | 2019-05-29 | 2019-05-29 | Adjustable open-ended catheter sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110037759B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4085964A4 (en) * | 2019-12-31 | 2024-01-31 | Venus MedTech (HangZhou) Inc. | Hemostasis valve, catheter sheath, and method for sealing interventional instrument |
| CN112206399A (en) * | 2020-09-18 | 2021-01-12 | 合肥晟宏医疗器械有限公司 | Vascular catheter sheath assembly |
| CN113018641A (en) * | 2021-04-26 | 2021-06-25 | 苏州中天医疗器械科技有限公司 | Catheter sheath |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0631793A1 (en) * | 1993-06-30 | 1995-01-04 | Cook Incorporated | Splittable hemostatic valve and method of use with a splittable introducer sheath |
| CN104800954A (en) * | 2015-05-20 | 2015-07-29 | 湖南埃普特医疗器械有限公司 | Valve-adjustable catheter sheath |
| CN206080629U (en) * | 2016-06-08 | 2017-04-12 | 深圳市科奕顿生物医疗科技有限公司 | Intervene medical instrument conveying system |
| CN210277235U (en) * | 2019-05-29 | 2020-04-10 | 迪泰医学科技（苏州）有限公司 | Catheter sheath with adjustable opening |
-
2019
- 2019-05-29 CN CN201910458317.2A patent/CN110037759B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0631793A1 (en) * | 1993-06-30 | 1995-01-04 | Cook Incorporated | Splittable hemostatic valve and method of use with a splittable introducer sheath |
| CN104800954A (en) * | 2015-05-20 | 2015-07-29 | 湖南埃普特医疗器械有限公司 | Valve-adjustable catheter sheath |
| CN206080629U (en) * | 2016-06-08 | 2017-04-12 | 深圳市科奕顿生物医疗科技有限公司 | Intervene medical instrument conveying system |
| CN210277235U (en) * | 2019-05-29 | 2020-04-10 | 迪泰医学科技（苏州）有限公司 | Catheter sheath with adjustable opening |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110037759A (en) | 2019-07-23 |
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