CN117482355A - Tearable vascular sheath with hemostatic valve - Google Patents
Tearable vascular sheath with hemostatic valve Download PDFInfo
- Publication number
- CN117482355A CN117482355A CN202311695888.0A CN202311695888A CN117482355A CN 117482355 A CN117482355 A CN 117482355A CN 202311695888 A CN202311695888 A CN 202311695888A CN 117482355 A CN117482355 A CN 117482355A
- Authority
- CN
- China
- Prior art keywords
- sheath
- seat
- valve
- outer sheath
- tearable
- 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.)
- Pending
Links
- 230000002439 hemostatic effect Effects 0.000 title claims abstract description 38
- 230000002792 vascular Effects 0.000 title claims abstract description 26
- 230000023597 hemostasis Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims 1
- 239000008280 blood Substances 0.000 abstract description 11
- 210000004369 blood Anatomy 0.000 abstract description 11
- 208000007536 Thrombosis Diseases 0.000 abstract description 5
- 208000015181 infectious disease Diseases 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000010412 perfusion Effects 0.000 description 4
- 210000001367 artery Anatomy 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 3
- 210000003811 finger Anatomy 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 206010053615 Thermal burn Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000001990 intravenous administration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 208000025962 Crush injury Diseases 0.000 description 1
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000007887 coronary angioplasty Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
- 229920000669 heparin Polymers 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000013152 interventional procedure Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0074—Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable
- A61M25/0075—Valve means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M2025/0024—Expandable catheters or sheaths
Abstract
The invention discloses a tearable vascular sheath with a hemostatic valve, which comprises a tearable outer sheath component and an expansion pipe component, wherein the tearable outer sheath component comprises an outer sheath pipe body and an outer sheath seat, one end of the outer sheath seat is connected with one end of the outer sheath pipe body, the other end of the outer sheath seat is provided with the hemostatic valve, the hemostatic valve is embedded in the outer sheath seat, and a valve cover is arranged at the other end of the outer sheath seat. According to the tearable vascular sheath with the hemostatic valve, the hemostatic valve is arranged in the outer sheath seat, so that the hemostatic valve can play a role in preventing blood from flowing out after the vascular sheath is inserted into a human body, excessive blood loss of a patient is prevented, and the risk of infection and thrombus of the patient is avoided.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a tearable vascular sheath with a hemostatic valve.
Background
With the continuous development of medical technology, there are more and more surgical methods for peripheral intravenous infusion therapy and percutaneous interventional procedures, wherein peripheral intravenous catheter implantation, percutaneous transluminal coronary angioplasty and other similar procedures are now commonly used in clinic. These procedures introduce medical devices into the corresponding body vessel. Among them, the Seldinger (Seldinger) technique is widely used, in which a puncture needle is inserted into an artery or vein, and a guide wire is introduced into the artery or vein through the lumen of the puncture needle, and the puncture needle is withdrawn. The dilation tube is passed through the outer sheath into the lumen of the outer sheath, both having a tubular configuration, and both entering the artery or vein together after being locked at the proximal end by a locking structure. After the sheath tube is fixed in position, the expansion tube is withdrawn, and finally the outer sheath can be used as a channel for accessing or replacing various interventional devices.
However, when the outer sheath is inserted into a human body, blood flows out of the human body along the outer sheath due to blood pressure in the blood vessel, if the blood is not plugged in time, a patient can continuously lose blood, a doctor generally needs to plug an upper port of the outer sheath by fingers so as to prevent the patient from excessively losing blood, but one hand of the doctor is occupied, and the operation is not facilitated; the blood flows out from the upper port of the outer sheath and contacts with the air, so that the risk of infection and thrombus of a patient exists; the blood flows out from the upper port of the outer sheath, so that the surgical environment is polluted, the vision of a doctor is blocked, and the operation of the doctor is not facilitated.
Disclosure of Invention
Therefore, an object of the present invention is to provide a tearable vascular sheath with a hemostatic valve, which solves the problems mentioned in the background art and overcomes the drawbacks of the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a take vascular sheath that can tear of hemostasis valve, includes can tear sheath subassembly and expansion pipe subassembly, can tear sheath subassembly and include sheath body and sheath seat, the one end of sheath seat with the one end of sheath body links to each other, the other end of sheath seat is equipped with the hemostasis valve, the hemostasis valve embedding is in the sheath seat, the sheath seat other end still is equipped with the valve gap.
Preferably, both ends of the outer sheath seat are cylindrical, and the cross-sectional diameter of one end of the outer sheath seat connected with the outer sheath tube body is smaller than that of one end of the outer sheath seat provided with the hemostatic valve.
Preferably, the valve cover is hollow and cylindrical, the outer surface of one end of the outer sheath seat, provided with the hemostatic valve, is provided with a plurality of protrusions, the side surface of the valve cover is provided with a clamping groove corresponding to the protrusions, and the protrusions can be just clamped in the clamping groove.
Preferably, the front end face of the valve cover is provided with a protruding block, and grooves are formed in the periphery of the protruding block.
Preferably, a first sheath wing and a second sheath wing are respectively arranged on two sides of the sheath seat, and an included angle formed by the first sheath wing and the second sheath wing is 120-175 degrees.
Preferably, the outer surfaces of the first outer sheath wing and the second outer sheath wing are sleeved with tearing wrenches.
Preferably, the expansion pipe assembly comprises an expansion pipe body and an expansion pipe seat, the expansion pipe body is connected with the expansion pipe seat, expansion pipe arms are arranged on two sides of the expansion pipe seat, and a clamping block is arranged at one end, close to the expansion pipe body, of the expansion pipe arm.
Preferably, the expansion pipe body and the expansion pipe seat are connected together through an insert pressing technology.
Preferably, a valve pad is further arranged in the valve cover, and the valve pad is attached to the hemostatic valve.
Preferably, the sheath seat is provided with a tearing seam, the tearing seam is arranged along the axial direction of the sheath seat and equally divides the sheath seat.
Therefore, the invention has the following beneficial effects:
according to the tearable vascular sheath with the hemostatic valve, the hemostatic valve is arranged in the outer sheath seat, so that the hemostatic valve can play a role in preventing blood from flowing out after the vascular sheath is inserted into a human body, excessive blood loss of a patient is prevented, and the risk of infection and thrombus of the patient is avoided.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of the overall construction of a tearable vascular sheath of the present invention;
FIG. 2 is a schematic illustration of the construction of the tearable sheath assembly of the present invention;
FIG. 3 is a schematic view of the overall structure of the sheath hub of the present invention;
FIG. 4 is an exploded view of the sheath seat portion of the present invention;
FIG. 5 is a schematic view of the structure of the hemostatic valve of the present invention embedded inside the sheath seat;
FIG. 6 is a schematic view of the angle between a first and second sheath flap of the present invention;
FIG. 7 is a schematic view of the tear-away wrench structure of the present invention;
FIG. 8 is a schematic view of the tear-open trigger sleeve of the present invention disposed over the wings of the outer sheath;
FIG. 9 is a partial cross-sectional view of a valve cover of the present invention;
FIG. 10 is a schematic illustration of the stent assembly of the present invention;
FIG. 11 is a schematic view of the overall structure of the expansion tube base of the present invention;
FIG. 12 is a top view of an expansion tube socket of the present invention;
FIG. 13 is a schematic view of the connection of the stent holder and the stent body according to the present invention.
In the figure: 1. an outer sheath seat; 2. expanding the tube seat; 3. an outer sheath tube; 4. expanding the tube body; 5. an extension tube; 6. a three-way valve; 7. a primary sheath wing; 8. a second outer sheath wing; 9. a valve cover; 10. a protruding block; 11. tearing the crack; 12. a hemostatic valve; 13. a valve pad; 14. a clamping groove; 15. a protrusion; 16. a groove; 17. tearing open the wrench; 18. reinforcing ribs; 19. expanding the tube arm; 20. a clamping block; 21. expanding the pipe hole; 23. an insert.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The utility model provides a take vascular sheath that can tear of hemostasis valve, includes can tear sheath subassembly and expansion pipe subassembly, as shown in fig. 2, can tear sheath subassembly and include sheath body 3 and sheath seat 1, as shown in fig. 4 and 5, the other end of sheath seat 1 is equipped with hemostasis valve 12, hemostasis valve 12 part can imbed in sheath seat 1 just, and sheath seat 1 other end still is equipped with valve gap 9.
According to the tearable vascular sheath with the hemostatic valve, the hemostatic valve 12 is arranged in the outer sheath seat 1, so that the hemostatic valve can play a role in preventing blood from flowing out after the vascular sheath is inserted into a human body, excessive blood loss of a patient is prevented, and the risk of infection and thrombus of the patient is avoided.
As a specific embodiment, the hemostatic valve 12 may be an integrated hemostatic valve 12.
As a specific embodiment, the hemostatic valve 12 may be a split hemostatic valve 12.
In one embodiment, one end of the outer sheath hub 1 is connected to one end of the outer sheath tube 3 and one end of the outer sheath tube 3 is inserted into the outer sheath hub 1.
Compared with the structure that one end of the outer sheath tube body 3 is inserted into the outer sheath seat 1, compared with the structure that the end face of the outer sheath tube body 3 is partially exposed outside the two wings of the outer sheath, the problem that the outer sheath tube body 3 cannot be torn smoothly due to the phenomena of crush injury and scald of the outer sheath tube body 3 caused by problems of a die, temperature, dimensional tolerance and the like easily occurs during forming can be avoided.
As an embodiment, both ends of the outer sheath holder 1 are cylindrical, and the cross-sectional diameter of the end of the outer sheath holder 1 connected to the outer sheath tube 3 is smaller than the cross-sectional diameter of the end of the outer sheath holder 1 provided with the hemostatic valve 12.
The sheath hub 1 may be divided into three parts, a first part being the end connected to the sheath tube 3, a second part being the end accommodating the hemostatic valve 12, and a third part being the middle part connecting the first and second parts. The first part and the second part are both cylindrical, the axial section of the first part and the second part is in two rectangles with different widths, the third part is in a truncated cone shape, the first part and the second part are connected, and the axial section of the third part is in a trapezoid shape.
As an embodiment, as shown in fig. 5, the valve cover 9 is in a hollow cylindrical shape, the outer surface of one end of the sheath seat 1 provided with the hemostatic valve 12 is provided with a plurality of protrusions 15, the side surface of the valve cover 9 is provided with a clamping groove 14 corresponding to the protrusions 15, and the protrusions 15 can be just clamped in the clamping groove 14.
The valve cover 9 is similar to a bottle cap, and covers one end of the outer sheath base 1, except that the valve cover 9 is not connected with one end of the outer sheath base 1 through threads, but is matched and clamped with a protrusion 15 on the outer sheath base 1 through a clamping groove 14.
As an embodiment, as shown in fig. 5, the front end surface of the valve cover 9 is provided with a protrusion block 10, and grooves 16 are formed around the protrusion block 10.
The convex block 10 at the front end of the valve cover 9 is matched with the clamping block 20 at the front end of the expansion tube seat 2 to realize the clamping and fixing between the outer sheath seat 1 and the expansion tube seat 2.
As an embodiment, as shown in fig. 6, the first sheath wing 7 and the second sheath wing 8 are respectively arranged at two sides of the sheath base 1, and an included angle α formed by the first sheath wing 7 and the second sheath wing 8 is 120 ° -175 °.
As a specific embodiment, the included angle α between the first sheath wing 7 and the second sheath wing 8 is 120 °
As a specific embodiment, the included angle α between the first and second sheath wings 7 and 8 is 135 °
As a specific embodiment, the included angle α between the first and second sheath wings 7 and 8 is 150 °
The included angle of the two wings of the outer sheath is 120 degrees to 175 degrees, so that after the outer sheath is inserted into a human body from the neck, the collarbone and the like, the gap between the two wings and the skin is increased, fingers can more conveniently extend into the gap, the force is conveniently generated, and the injury to a patient can be avoided.
As a specific implementation mode, when the invention is used, the force application directions of the two wings of the outer sheath are normal to the direction of the outer sheath tube body 3, one side is firstly broken off, the other side is broken off, then the force is applied to the two sides, the outer sheath tube body 3 is torn, and the force application directions are more convenient for doctors to operate.
As an embodiment, as shown in fig. 7 and 8, the outer surfaces of the first and second sheath wings 7 and 8 are sleeved with a tear-open wrench 17.
The tearing wrench 17 is matched and can be sleeved on two wings of the outer sheath, so that the lever effect is achieved, the labor is saved, and a doctor can break the outer sheath off with smaller force.
As an embodiment, as shown in fig. 10, the expansion pipe assembly comprises an expansion pipe body 4 and an expansion pipe seat 2, the expansion pipe body 4 is connected with the expansion pipe seat 2, as shown in fig. 11 and 12, expansion pipe arms 19 are arranged on two sides of the expansion pipe seat 2, and a clamping block 20 is arranged at one end, close to the expansion pipe body 4, of the expansion pipe arms 19. The expansion pipe seat 2 is provided with an expansion pipe hole 21 for connecting the expansion pipe body 4.
As shown in fig. 12, the clamping block 20 at the front end position of the expansion pipe arm 19 is matched and clamped with the groove 16 of the convex block 10 at the front end of the valve cover 9 as shown in fig. 5 and 9.
As an embodiment, as shown in fig. 13, which is a partial cross-sectional view of the stent assembly, the connection mode of the stent tube body 4 and the stent tube seat 2 is shown, an insert 23 is provided inside, and the stent tube body 4 and the stent tube seat 2 are connected together through an insert 23 pressing process. Compared with the connection through the embedded part injection molding process, the production efficiency is higher, the injection molding defect is not easy to occur, the qualification rate is high, and the production is more facilitated.
As an embodiment, as shown in fig. 9, a valve pad 13 is further provided inside the valve cover 9, and the valve pad 13 is attached to the hemostatic valve 12. Can closely attach the outer wall of the expansion pipe body 4 or the introduced medical instrument to prevent air and foreign matters in the air from entering the human body, and also can prevent blood from being carried out by the expansion pipe body 4 or the introduced medical instrument.
As an embodiment, as shown in fig. 3, 4 and 5, the sheath base 1 is provided with a tear seam 11, the tear seam 11 is provided along the axial direction of the sheath base 1, and the tear seam 11 equally divides the entire sheath base 1. When tearing the vascular sheath, tearing is performed along the tear seam 11.
In one embodiment, as shown in fig. 1 and 2, the perfusion assembly further comprises a perfusion assembly, wherein the perfusion assembly comprises an extension tube 5 and a three-way valve 6, one end of the extension tube 5 is connected with the side surface of the outer sheath base 1, the other end of the extension tube 5 is connected with one end of the three-way valve 6, and the extension tube 5 is communicated with the outer sheath tube body 3 through the outer sheath base 1.
According to the tearable vascular sheath, the extension tube 5 and the three-way valve 6 are connected to the side face of the outer sheath seat 1, after the medical instrument is introduced into the outer sheath, heparin physiological saline can be injected into the inner side of the outer sheath tube body 3 through the three-way valve 6 and the extension tube 5, residual gas in the outer sheath can be pumped out, so that the risk of thrombus of a patient is reduced, the three-way valve 6 is closed when a perfusion assembly is not used, and blood is prevented from flowing out of a human body or the gas enters the human body.
In one embodiment, the end of the extension tube 5 connected to the outer sheath hub 1 and the end of the outer sheath tube 3 connected to the outer sheath hub 1 are inserted into the outer sheath hub 1. The upper end face of the outer sheath tube body 3 is not exposed any more, so that the phenomenon that the outer sheath tube body 3 cannot be torn smoothly due to the fact that the outer sheath tube body 3 is easy to crush and scald due to the problems of a die, temperature, dimensional tolerance and the like is avoided.
In one embodiment, as shown in fig. 7 and 8, both sides of the sheath hub 1 are provided with a first sheath wing 7 and a second sheath wing 8, respectively, and the extension tube 5 is inserted into and connected to the sheath hub 1 through the first sheath wing 7 or the second sheath wing 8.
The outer surfaces of the first outer sheath wing 7 and the second outer sheath wing 8 are sleeved with a tearing wrench 17, the inner side and the outer side of the tearing wrench 17 are provided with reinforcing ribs 18, and the reinforcing ribs 18 are arc-shaped.
The tearing wrench 17 is matched and can be sleeved on two wings of the outer sheath, so that the lever effect is achieved, the labor is saved, and a doctor can break the outer sheath off with smaller force. The inner side and the outer side of the tearing wrench 17 are provided with reinforcing ribs 18 with anti-skid effect, the reinforcing ribs 18 on the inner side are arc-shaped and are more fit with the shape of the thumb, so that the thumb is prevented from sliding and slipping relative to the left side and the right side of the reinforcing ribs 18; the back of the tearing spanner 17 is provided with an arc-shaped recess, so that the index finger can be better attached, the force is more convenient to exert, and the anti-slip effect is achieved.
In one embodiment, as shown in fig. 10, the end of the expansion pipe body 4 is tapered, and the head of the expansion pipe body 4 is conical.
In one embodiment, a slit is also provided on the outer sheath tube 3 at the end of the outer sheath tube 3 connected to the outer sheath holder 1, so as to facilitate tearing.
The working process comprises the following steps: before operation, the expansion tube assembly is required to be inserted into the outer sheath seat and the outer sheath tube body of the tearable outer sheath assembly from the top end of the outer sheath seat of the tearable outer sheath assembly, so that the expansion tube seat and the outer sheath seat are locked by clamping blocks and grooves around the protruding blocks. The method comprises the steps of penetrating the exposed end of a guide wire which is already entered into a puncture vessel into the head inner cavity of a tearing-type vascular sheath on the tearing-type vascular sheath which is already reliably locked, fixing the guide wire, pushing the sheath along the guide wire until the sheath enters the vessel, fixing the vascular sheath, withdrawing the guide wire, pinching the expansion tube arm to release the locking between the expansion tube arm and a sheath seat, fixing the tearing-type sheath assembly, withdrawing the expansion tube assembly, placing other instruments along the inner cavity of the sheath tube of the tearing-type sheath assembly, injecting heparinized normal saline into the inner side of the sheath tube through a three-way valve and an extension tube after the placement of the instruments is completed, extracting residual gas in the sheath, removing a valve cover when the tearing-type sheath assembly is needed, tearing a first sheath wing and a second sheath wing by tearing a wrench on one side, withdrawing one side of the two wings of the sheath in the direction of the sheath tube, tearing the other side, and then pulling the other side towards the two sides, so that the sheath seat and the sheath tube are torn.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It will be readily understood by those skilled in the art that the present invention, including any combination of parts described in the summary and detailed description of the invention above and shown in the drawings, is limited in scope and does not constitute a complete description of the various aspects of these combinations for the sake of brevity. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a take vascular sheath that can tear of hemostasis valve, includes can tear sheath subassembly and expansion pipe subassembly, its characterized in that, can tear the sheath subassembly and include sheath body and sheath seat, the one end of sheath seat with the one end of sheath body links to each other, the other end of sheath seat is equipped with the hemostasis valve, the hemostasis valve embedding is in the sheath seat, the sheath seat other end still is equipped with the valve gap.
2. The tearable vascular sheath with a hemostatic valve according to claim 1, wherein both ends of the outer sheath base are cylindrical, and a cross-sectional diameter of an end of the outer sheath base connected to the outer sheath tube is smaller than a cross-sectional diameter of an end of the outer sheath base provided with the hemostatic valve.
3. The tearable vascular sheath with the hemostatic valve according to claim 1, wherein the valve cover is hollow and cylindrical, a plurality of protrusions are arranged on the outer surface of one end of the outer sheath seat, provided with the hemostatic valve, and clamping grooves corresponding to the protrusions are arranged on the side surface of the valve cover, and the protrusions can be just clamped in the clamping grooves.
4. A tearable vascular sheath with a hemostatic valve according to claim 3, wherein the front end surface of the valve cover is provided with a protruding block, and the circumference of the protruding block is provided with a groove.
5. The tearable vascular sheath with a hemostatic valve according to claim 1, wherein the two sides of the sheath seat are respectively provided with a first sheath wing and a second sheath wing, and an included angle between the first sheath wing and the second sheath wing is 120 ° -175 °.
6. The valve of claim 5, wherein the outer surfaces of the first and second wings are provided with a tear-open wrench.
7. The tearable vascular sheath with a hemostatic valve according to claim 4, wherein the expansion tube assembly comprises an expansion tube body and an expansion tube seat, the expansion tube body is connected with the expansion tube seat, two sides of the expansion tube seat are provided with expansion tube arms, and one end of the expansion tube arm, which is close to the expansion tube body, is provided with a clamping block.
8. The valve of claim 7, wherein the stent tube body and the stent tube base are joined together by an insert compression process.
9. A tearable vascular sheath with a hemostatic valve according to claim 3, wherein the valve cover is further provided with a valve pad inside, the valve pad being in contact with the hemostatic valve.
10. The valve of any one of claims 1-9, wherein the sheath seat is provided with a tear seam, the tear seam being disposed axially of the sheath seat and the tear seam bisecting the sheath seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311695888.0A CN117482355A (en) | 2023-12-12 | 2023-12-12 | Tearable vascular sheath with hemostatic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311695888.0A CN117482355A (en) | 2023-12-12 | 2023-12-12 | Tearable vascular sheath with hemostatic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117482355A true CN117482355A (en) | 2024-02-02 |
Family
ID=89672826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311695888.0A Pending CN117482355A (en) | 2023-12-12 | 2023-12-12 | Tearable vascular sheath with hemostatic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117482355A (en) |
-
2023
- 2023-12-12 CN CN202311695888.0A patent/CN117482355A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6142981A (en) | Hemostasis valve | |
| EP0513969B1 (en) | Hemostasis valve | |
| US5669881A (en) | Vascular introducer system incorporating inflatable occlusion balloon | |
| EP0343953B1 (en) | Self-occluding intravascular cannula assembly | |
| US7985232B2 (en) | Detachable hemostasis valve and splittable sheath assembly | |
| US7377909B2 (en) | Connection assembly for use with splittable sheath | |
| CN100393376C (en) | Indwelling cathether device | |
| US5300023A (en) | Apparatus and method for independent movement of an instrument within a linear catheter | |
| JP2974294B2 (en) | Multi-section needle and resilient plug assembly for medical devices | |
| EP1638630B1 (en) | Thrombectomy catheter device having a self-sealing hemostasis valve | |
| US6712789B1 (en) | Introducer having a movable valve assembly with removable side port | |
| US20040167474A1 (en) | Catheter having a low drag septum | |
| WO1994027505A1 (en) | Vascular sealing device | |
| JP2001224693A (en) | Intravascular indwelling catheter | |
| JPH10201850A (en) | Needle mechanism and valve mechanism for catheter | |
| KR102239216B1 (en) | Introducer sheath | |
| JP3941022B2 (en) | Catheter introducer | |
| CN117482355A (en) | Tearable vascular sheath with hemostatic valve | |
| CN111084653A (en) | Blood vessel puncture sheath | |
| JP3611888B2 (en) | Medical insertion tool | |
| JP3618029B2 (en) | Hemostasis valve for catheter introducers | |
| CN211609997U (en) | Blood vessel puncture sheath | |
| CA2809842C (en) | Dilator centering device and assemblies | |
| CN109481783B (en) | Safety venous indwelling needle | |
| CN117442845A (en) | Pinch-open tearable vascular sheath |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |