CN113694367A - Adjustable hemostasis valve device - Google Patents
Adjustable hemostasis valve device Download PDFInfo
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- CN113694367A CN113694367A CN202110780973.1A CN202110780973A CN113694367A CN 113694367 A CN113694367 A CN 113694367A CN 202110780973 A CN202110780973 A CN 202110780973A CN 113694367 A CN113694367 A CN 113694367A
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- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
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Abstract
The invention relates to an adjustable hemostasis valve device, which comprises a catheter sheath shell, a catheter sheath cap, a sealing element and an opening adjusting mechanism, wherein the catheter sheath shell is connected with the catheter sheath cap, the catheter sheath shell and the catheter sheath cap can move in the axial direction, and the sealing element is arranged in the catheter sheath shell after being connected with the opening adjusting mechanism; the opening adjusting mechanism comprises a first positioning disc and an installation cylinder, and the sealing element is fixedly connected with the first positioning disc and then installed in the installation cylinder; the sealing element comprises a spiral flow channel extending along the axial direction, the far end of the sealing element is fixed with the mounting cylinder, the near end of the sealing element is fixedly connected with the first positioning disc, a plurality of first positioning pins are distributed on the periphery of the first positioning disc, and a plurality of spiral sliding guide grooves are formed at the near end of the mounting cylinder; the sheath cap of the catheter sheath can move in the axial direction to enable the first positioning pin of the first positioning disc to slide along the sliding guide groove of the mounting barrel, compress and rotate or release and rotate the sealing element, and the opening size of the spiral flow passage of the sealing element is adjusted.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an adjustable hemostasis valve device.
Background
Interventional therapy is a minimally invasive operation which utilizes the guidance of medical imaging equipment to introduce special guide wires, catheter sheaths and other precise instruments into a human body to diagnose and locally treat internal pathological conditions, can treat diseases which cannot be treated in the past or have poor treatment effect, simultaneously has the advantages of small wound, quick recovery and good effect, and is one of the development directions of future medicine.
During an interventional operation, one or more catheter sheaths are inserted into a blood vessel or a tissue lumen and extend to a position near a tissue or a structure targeted by the operation, generally by a blood vessel puncture technique, so that a passage from the outside to the inside of the surgical tissue lumen is established for delivering minimally invasive surgical instruments and medicines for the operation, or medical image real-time monitoring is realized in the body. In order to prevent air from entering a blood vessel through the catheter sheath, reduce blood loss during the operation and ensure the sterility of the blood vessel during the operation, a hemostatic valve with certain tightness is required to be arranged at the tube head end of the catheter sheath used for the interventional operation. Firstly, an effective seal is required when the instrument is inserted into or withdrawn from the sheath, and secondly, the frictional resistance of the hemostatic valve to the insertion and withdrawal of the instrument into and out of the catheter sheath should be as low as possible, otherwise the control of the instrument by the surgeon during the surgical procedure may be affected.
The traditional hemostatic valve is generally processed by elastic materials such as silica gel or silicon rubber, a linear, cross or circular opening which is cut in advance is arranged in the middle of the valve body, the sealing performance of the valve is realized by extruding a silica gel elastomer, and the size of the opening determines the size of a passing instrument. When the large-size instruments and catheters need to pass through the operation, on one hand, the deformation amount of the silica gel is too large, the possibility of failure exists, meanwhile, the friction force between the silica gel and the instruments is increased sharply, the control of doctors on the instruments is affected, and the operation difficulty and risk are increased. On the other hand, the silica gel elastomer is difficult to reset after the instrument is drawn out, and the channel loses the sealing property.
The foregoing description is provided for general background information and is not admitted to be prior art.
Disclosure of Invention
The invention aims to provide an adjustable hemostasis valve device, which can adjust the size of an opening of a sealing element in the adjustable hemostasis valve device so as to adapt to the passing of surgical instruments with different specifications and keep good sealing performance and pushing performance when the surgical instruments pass through the opening.
The invention provides an adjustable hemostasis valve device, which comprises a catheter sheath and a sealing element, wherein the catheter sheath is hollow, the sealing element is positioned in the catheter sheath, the sealing element is an elastic element and comprises a spiral flow channel extending along the axial direction, the near end and the far end of the catheter sheath can move relatively in the axial direction, the sealing element can be compressed and rotated or released and rotated when the near end of the catheter sheath moves axially, and the opening size of the spiral flow channel of the sealing element is adjusted so as to adapt to surgical instruments of different specifications to pass through the spiral flow channel.
Further, the catheter sheath comprises a catheter sheath shell at the distal end and a catheter sheath cap at the proximal end, and the catheter sheath shell and the catheter sheath cap can move relatively in the axial direction; the distal end part of the catheter sheath cap extends inwards to form a limiting ring, a limiting bump is annularly arranged at the position, close to the proximal end, of the catheter sheath shell, and the limiting ring of the catheter sheath cap is matched with the limiting bump of the catheter sheath shell to limit the relative displacement stroke between the catheter sheath cap and the catheter sheath shell.
The opening adjusting mechanism comprises a first positioning disc and an installation cylinder, the first positioning disc is fixedly connected with the near end of the sealing element, the sealing element is installed in the installation cylinder after being fixedly connected with the first positioning disc, a plurality of first positioning pins are distributed on the periphery of the first positioning disc, and a plurality of spiral sliding guide grooves matched with the positioning pins are formed in the near end of the installation cylinder; when the conduit sheath cap moves axially, the first positioning pin of the first positioning disk slides along the sliding guide groove of the mounting barrel to adjust the opening size of the spiral flow passage of the sealing element.
Further, opening adjustment mechanism still includes the second positioning disk, the distal end fixed connection of second positioning disk and sealing member, and the second positioning disk periphery distributes and has a plurality of second locating pins, and the distal end of an installation section of thick bamboo is formed with a plurality of locating holes, and the second locating pin of second positioning disk and the locating hole cooperation of an installation section of thick bamboo are fixed with the distal end of sealing member and an installation section of thick bamboo.
Further, the surfaces of the first positioning disc and the second positioning disc, which are close to the sealing element, are provided with first steps, the corresponding positions at the two ends of the sealing element are provided with second steps, the first steps and the second steps are staggered along the circumferential direction, and the first positioning disc and the second positioning disc are bonded together through the first steps and the second steps and the sealing element.
Further, the sealing device further comprises one-way valves, and the one-way valves are arranged at two ends or the middle of the sealing element along the axial direction.
Further, a pushing ring is formed on the inner side of the catheter sheath cap, the distal end of the pushing ring is in contact with the proximal end of the first positioning disc, and when the catheter sheath cap moves axially, the pushing ring is linked with the first positioning disc.
Further, still include solid fixed ring, gu fixed ring and the near-end fixed connection of a mounting section of thick bamboo, gu fixed ring's periphery and the near-end inner wall threaded connection of catheter sheath casing will install a section of thick bamboo and fix in catheter sheath casing.
Further, the catheter sheath cap is threadedly coupled to the proximal end of the catheter sheath housing and is controlled for axial movement along the catheter sheath housing by rotation of the catheter sheath cap.
The catheter sheath cap is characterized by further comprising a spring and a driving piece, wherein the spring is sleeved on the catheter sheath shell and is positioned between the limiting ring of the catheter sheath cap and the limiting bump of the catheter sheath shell, and the catheter sheath shell is in clearance fit with the catheter sheath cap; the driving piece is rotatably fixed on the catheter sheath shell, the tail end of the driving piece is provided with a cam structure, the cam structure is in contact with the distal end of the catheter sheath cap and used for controlling the displacement of the catheter sheath cap, and the catheter sheath cap can move axially along the catheter sheath shell under the matching action of the spring and the cam structure.
Further, the driving piece includes presses the splenium and extends the cam structure who forms from the both sides of pressing the splenium, is equipped with the installation axle on the cam structure, fixes the rotatable fixing of driving piece on the catheter sheath casing through the installation axle.
The adjustable hemostasis valve device has the advantages that:
(1) an adjustable hemostasis valve device comprises a sealing element made of silica gel or silicon rubber, and the adjustable hemostasis valve device comprises a spiral flow channel and straight-through flow channels, wherein the spiral flow channel is axially positioned in the middle of the sealing element, the straight-through flow channels are positioned at two ends of the spiral flow channel, and the function of adjusting the size of an opening of the sealing element is realized by compressing and rotating the spiral flow channel in the center of the sealing element;
(2) the sealing element is provided with a one-way valve in the shape of three or more valve leaflets, so that the sealing property of the sealing element is further enhanced, and the sealing element can be used under the condition of large pressure difference between the two ends of the far end and the near end;
(3) the opening adjusting mechanism consists of a first positioning disc, a second positioning disc and an installation cylinder, the first positioning disc and the second positioning disc are provided with a first positioning pin and a second positioning pin, the installation cylinder is provided with a spiral guide sliding groove, and the compression and rotation compound movement of a sealing element is realized by axially pushing and pulling the first positioning disc, so that the opening size of the sealing element in the adjustable hemostasis valve device is adjusted;
(4) the movable catheter sheath cap with a thread structure can accurately control the axial movement of the catheter sheath cap through thread rotation so as to push the first positioning disc, and the accurate control of the size of the opening of the sealing element in the adjustable hemostasis valve device is realized;
(5) the cooperation of the cam structure through spring and driving piece realizes that catheter sheath cap edge catheter sheath casing axial displacement, and the size of the opening of sealing member in the adjustable hemostasis valve device is controlled through the driving piece is in order to pass through the apparatus, and the spring automatic re-setting after the release driving piece promotes catheter sheath cap axial displacement and maintains the leakproofness, thereby driving piece and spring mutually support and realize the self-adaptation regulation to the apparatus of different diameters.
Drawings
FIG. 1 is an exploded schematic view of an adjustable hemostasis valve device in accordance with example 1;
FIG. 2 is a cross-sectional view of the adjustable hemostasis valve device of example 1;
FIG. 3 is a schematic view of the seal in an uncompressed, rotated state;
FIG. 4 is a cross-sectional view of the seal in an uncompressed, rotated state;
FIG. 5 is a schematic view of the seal in a compressed, rotated state;
FIG. 6 is a cross-sectional view of the seal in a compressed, rotated state;
FIG. 7 is a schematic view of the assembly of the seal with the first puck and the second puck;
FIG. 8 is a schematic structural view of the mounting barrel;
FIG. 9 is a schematic view of the assembly of the seal and the check valve;
FIG. 10 is an exploded view of the adjustable hemostasis valve device of example 2;
FIG. 11 is a schematic view showing the construction of the adjustable hemostasis valve device in example 2;
FIG. 12 is a sectional view of the adjustable hemostasis valve device of example 2;
fig. 13 is a schematic structural view of a driving member in embodiment 2.
In the figure, 1, a catheter sheath shell; 2. a catheter sheath cap; 3. a seal member; 4. a first positioning plate; 5. mounting the cylinder; 6. a second positioning plate; 7. a fixing ring; 8. a one-way valve; 9. a seal ring; 10. a spring; 11. A drive member; 12. an opening adjustment mechanism; 100. an adjustable hemostasis valve device; 101. a limiting bump; 102. a circular hole; 103. a first cavity; 201. a push ring; 202. a limiting ring; 203. a first thread; 204. an opening; 301. a spiral flow channel; 302. a straight-through flow channel; 303. a second step; 401. a first positioning pin; 402. a first step; 501. a sliding guide groove; 502. positioning holes; 503. a second cavity; 601. A second positioning pin; 701. a second thread; 1101. a cam structure; 1102. a pressing part; 1103. a connecting rod; 1104. and (4) installing a shaft.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
First embodiment
Referring to fig. 1-2, an adjustable hemostasis valve device 100 includes a catheter sheath, a sealing member 3 and an opening adjusting mechanism 12, the catheter sheath is hollow and includes a catheter sheath housing 1 at a distal end and a catheter sheath cap 2 at a proximal end, both the catheter sheath housing 1 and the catheter sheath cap 2 are provided with a passage for a surgical instrument to enter, a first cavity 103 is formed inside the catheter sheath tube 1, the sealing member 3 and the opening adjusting mechanism 12 are connected and then fixed in the first cavity 103 of the catheter sheath tube 1, both the inner wall of the catheter sheath cap 2 and the outer wall of the proximal end of the catheter sheath housing 1 are provided with first threads 203, the catheter sheath cap 2 is connected with the proximal end of the catheter sheath housing 1 through the first threads 203, and the catheter sheath cap 2 can be controlled to move axially along the catheter sheath housing 1 by rotating the catheter sheath cap 2.
Referring to fig. 2 to 6, the sealing member 3 is an elastic member, and is made of silicone rubber or silicone rubber by integral molding, and includes a spiral flow channel 301 located in the middle of the sealing member 3 along the axial direction and straight-through flow channels 302 located at two ends of the spiral flow channel 301, and the cross section of the spiral flow channel 301 may be a triangular or polygonal spiral.
Referring to fig. 2, 7 and 8, the opening adjusting mechanism 12 includes a first positioning plate 4, a second positioning plate 6 and a mounting cylinder 5, the mounting cylinder 5 has a second cavity 503 therein, and the sealing member 3, the first positioning plate 4 and the second positioning plate 6 are fixed by glue or melting and then mounted in the second cavity 503 of the mounting cylinder 5. As shown in fig. 2 and 7, the proximal end of the sealing member 3 is fixedly connected to the first positioning plate 4, and the distal end of the sealing member 3 is fixedly connected to the second positioning plate 6. First positioning disk 4 and second positioning disk 6 all are provided with first step 402 (or decorative pattern) near the surface of sealing member 3, the corresponding position at sealing member 3 both ends is provided with second step 303 (or decorative pattern), first step 402 and second step 303 stagger along circumference, first positioning disk 4 and second positioning disk 6 are in the same place through bonding of first step 402 and second step 303 with sealing member 3, increase first positioning disk 4 and second positioning disk 6 and sealing member 3's joint strength. More specifically, with reference to fig. 2, fig. 7 and fig. 8, a plurality of first positioning pins 401 are uniformly distributed on the periphery of the first positioning disk 4, a plurality of spiral sliding guide grooves 501 for mounting the first positioning disk 4 are formed at the proximal end of the mounting tube 5, the first positioning disk 4 can slide along the sliding guide grooves 501, and the displacement and rotation of the first positioning disk 4 are controlled by the cooperation of the first positioning pins 401 and the sliding guide grooves 501. A plurality of second positioning pins 601 are uniformly distributed on the periphery of the second positioning disk 6; the distal end of the mounting tube 5 is formed with a plurality of positioning holes 502, and the second positioning pins 601 of the second positioning plate 6 and the positioning holes 502 of the mounting tube 5 cooperate to fix the distal end of the sealing member 3 with the mounting tube 5. In this embodiment, 3 first positioning pins 401, 3 second positioning pins 601, 3 positioning holes 502, and 3 sliding guide grooves 501 are provided.
With continued reference to fig. 2, 7 and 8, a pushing ring 201 is formed on the inner side of the sheath cap 2, the distal end of the pushing ring 201 contacts the proximal end of the first positioning disk 4, and is controlled to move axially along the sheath housing 1 by rotating the sheath cap 2, when the sheath cap 2 moves axially, the pushing ring 201 is linked with the first positioning disk 4, so that the first positioning pin 401 of the first positioning disk 4 slides along the sliding guide slot 501 of the mounting barrel 5, the sealing element 3 is pressed, and the proximal end of the sealing element 3 rotates along with the first positioning disk 4, thereby implementing a combined motion of compression and rotation of the sealing element 3, and thus adjusting the opening size of the spiral flow channel 301 in the center of the sealing element 3 to adapt to surgical instruments of different specifications to pass through the spiral flow channel 301. More specifically, as shown in fig. 2, 5-8, when the sheath cap 2 is rotated clockwise, the sheath cap 2 advances axially along the sheath housing 1, the pushing ring 201 on the sheath cap 2 pushes the first positioning disk 4, the first positioning pin 401 on the first positioning disk 4 slides spirally towards the distal end along the sliding guide slot 501 on the mounting barrel 5, and the sealing member 3 is rotated and pressed, so as to achieve the function of reducing the size of the opening of the sealing member 3 in the adjustable hemostasis valve device 100; as shown in fig. 2-4, 7 and 8, when the sheath cap 2 is rotated counterclockwise, the sheath cap 2 is withdrawn axially along the sheath housing 1, the push ring 201 on the sheath cap 2 disengages from the first positioning disk 4, the elastic force of the sealing member 3 pushes the first positioning disk 4 to move proximally, the first positioning pin 401 on the first positioning disk 4 spirally slides proximally along the sliding guide slot 501 on the mounting barrel 5 until contacting the push ring 201 on the sheath cap 2, and the rubber sealing member 3 is rotated and released, thereby increasing the size of the opening of the sealing member 3 in the adjustable hemostasis valve device 100. In addition, referring to fig. 1 and 9, the adjustable hemostasis valve device 100 further includes a check valve 8, the check valve 8 is axially disposed at two ends or a middle portion of the sealing member 3, the check valve 8 is configured as a three-flap or multi-flap structure, and when a pressure difference between two ends of the sealing member 3 is relatively large, such as a negative pressure at a proximal end, the sealing property of the sealing member 3 can be further enhanced. In this embodiment, the check valve 8 is disposed at the distal end of the sealing member 3, the leaflet of the check valve 8 defaults to a closed state, and when the catheter needs to be inserted from the proximal end, the leaflet of the check valve 8 is opened to ensure the passability of the catheter, and when the catheter is drawn out, the shape of the leaflet of the check valve 8 is restored to the closed state to maintain better sealing.
Referring to fig. 2, a limiting ring 202 is formed inward on the inner wall of the distal end of the sheath cap 2, a limiting protrusion 101 is annularly arranged at a position of the sheath housing 1 near the proximal end, and the limiting ring 202 of the sheath cap 2 and the limiting protrusion 101 of the sheath housing 1 cooperate with each other to limit the relative displacement stroke between the sheath cap 2 and the sheath housing 1. Referring to fig. 1, the distal end of the sheath cap 2 is provided with a plurality of axially extending openings 204 to increase the flexibility of the sheath cap 2 and facilitate its installation.
Referring to fig. 1 and 2, the adjustable hemostasis valve device 100 further includes a fixing ring 7, the fixing ring 7 is fixedly connected to the proximal end of the mounting tube 5, the fixing ring 7 has second threads 701 on the outer periphery thereof and the inner wall of the proximal end of the sheath housing 1, and the fixing ring 7 is in threaded connection with the inner wall of the sheath housing 1 through the second threads 701, so as to fix the mounting tube 5 of the opening adjusting mechanism 12 in the first cavity 103 of the sheath housing 1.
Referring to fig. 1 and fig. 2, the adjustable hemostasis valve device 100 further includes a sealing ring 9, and the sealing ring 9 is disposed at a joint of the first cavity 103 of the sheath housing 1 and the distal end of the second cavity 503 of the mounting barrel 5, so as to ensure the sealing performance after the first cavity 103 of the sheath housing 1 and the second cavity 503 of the mounting barrel 5 are jointed.
Second embodiment
This embodiment is substantially the same as the first embodiment, and differs primarily in the manner in which the sheath cap 2 is driven for axial movement along the sheath housing 1. In the first embodiment, the sheath housing 1 and the sheath cap 2 are drivingly connected by the first thread 203. Referring to fig. 10-13, in the present embodiment, the sheath housing 1 and the sheath cap 2 are configured to move the sheath cap 2 along the axial direction of the sheath housing 1 through the cooperation of the spring 10 and the cam structure 1101. In this embodiment, the adjustable hemostasis valve device 100 further includes a spring 10 and a driver 11. The spring 10 is sleeved on the catheter sheath housing 1 and is positioned between the limiting ring 202 of the catheter sheath cap 2 and the limiting bump 101 of the catheter sheath housing 1 after being installed, and the catheter sheath housing 1 and the catheter sheath cap 2 are in clearance fit. Referring to fig. 10, 11 and 13, the driving member 11 includes a pressing portion 1102, a connecting rod 1103 and 2 cam structures 1101 located at the end of the driving member 11, the two ends of the connecting rod 1103 are respectively connected to the pressing portion 1102 and the cam structures 1101, a mounting shaft 1104 is formed inside the cam structures 1101, 2 circular holes 102 are formed on the surface of the sheath housing 1, the mounting shaft 1104 of the driving member 11 is mounted in the circular holes 102, so that the driving member 11 is rotatably fixed on the sheath housing 1, and the cam structures 1101 contact the distal end of the sheath cap 2 for controlling the displacement of the sheath cap 2. The sheath cap 2 is axially displaceable along the sheath housing 1 under the co-operation of the spring 10 and the cam structure 1101. More specifically, as shown in fig. 3, 4, 7, 8, 12 and 13, when the driving member 11 is pressed down, the cam structure 1101 on the driving member 11 rotates to push the sheath cap 2 to retreat axially along the sheath housing 1 and compress the spring 10, the push ring 201 on the sheath cap 2 disengages from the first positioning disk 4, the elastic force of the sealing member 3 pushes the first positioning disk 4 proximally, and the first positioning pin 401 on the first positioning disk 4 spirally slides proximally along the sliding guide slot 501 on the mounting barrel 5 until contacting with the push ring 201 on the sheath cap 2, and rotates and releases the rubber sealing member 3, thereby achieving the function of increasing the opening size of the sealing member 3 in the adjustable hemostasis valve device 100; as shown in fig. 5-8, 12 and 13, when the driving member 11 is released, the cam structure 1101 on the driving member 11 rotates reversely under the action of the elastic force of the spring 10, the driving member 11 is reset, the elastic force of the spring 10 pushes the sheath cap 2 to advance axially along the sheath housing 1, the pushing ring 201 on the sheath cap 2 pushes the first positioning disk 4, the first positioning pin 401 on the first positioning disk 4 spirally slides distally along the sliding guide slot 501 on the mounting barrel 5, and the silicone sealing member 3 is rotated and pressed, thereby achieving the function of reducing the size of the opening of the sealing member 3 in the adjustable hemostasis valve device 100.
It will be appreciated that the first positioning disk 4 may be pushed in a variety of ways (i.e., the sheath cap 2 is driven to move axially along the sheath housing 1), such as by a spring, a screw drive, a rack and pinion drive, a linkage drive, a cam drive, or a micro linear motor drive. Not limited to the 2 ways in the above embodiment.
In summary, the adjustable hemostasis valve device 100 of the present application includes a sealing element 3 made of silica gel or silicon rubber, the sealing element 3 includes a spiral flow channel 301 located at the middle portion of the sealing element 3 along the axial direction and straight-through flow channels 302 located at two ends of the spiral flow channel 301, and the function of adjusting the size of the opening of the sealing element 3 is realized by compressing and rotating the spiral flow channel 301 at the center of the sealing element 3; the periphery of the first positioning disk 4 is annularly provided with a plurality of first positioning pins 401, the proximal end of the mounting tube 5 is formed with a plurality of spiral sliding guide grooves 501 for mounting the first positioning disk 4, the first positioning disk 4 can spirally slide along the sliding guide grooves 501, the first positioning pins 401 and the sliding guide grooves 501 are mutually matched, and the first positioning disk 4 is axially pushed and pulled to realize the compression and rotation compound movement of the sealing element 3 so as to adjust the opening size of the adjustable hemostasis valve device 100. A plurality of second positioning pins 601 are annularly arranged on the periphery of the second positioning plate 6; the distal end of the mounting tube 5 is formed with a plurality of positioning holes 502, and the second positioning pins 601 of the second positioning plate 6 and the positioning holes 502 of the mounting tube 5 cooperate to fix the distal end of the sealing member 3 with the mounting tube 5. In addition, the two ends or the central position of the sealing element 3 are provided with the check valves 8 with three or more valve leaflets, so that the sealing property of the sealing element 3 is further enhanced, and the sealing element can be used under the condition that the pressure difference between the two ends of the far end and the near end is large.
In this document, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.
As used herein, the ordinal adjectives "first", "second", "third", etc., used to describe an element are merely to distinguish between similar elements, and do not imply that the elements so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.
In this document, the terms "far", "near", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for the sake of clarity of the technical solutions and convenience of description, and thus, should not be construed as limiting the present invention.
As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (11)
1. An adjustable hemostasis valve device (100), characterized by: the catheter comprises a catheter sheath and a sealing element (3), wherein the catheter sheath is hollow, the sealing element (3) is positioned in the catheter sheath, the sealing element (3) is an elastic element and comprises a spiral flow channel (301) extending along the axial direction, the proximal end and the distal end of the catheter sheath can move relatively in the axial direction, the proximal end of the catheter sheath can compress and rotate or release and rotate the sealing element (3) when moving axially, and the opening size of the spiral flow channel (301) of the sealing element (3) is adjusted to adapt to the passing of surgical instruments of different specifications through the spiral flow channel (301).
2. The adjustable hemostasis valve device (100) of claim 1, wherein: the catheter sheath comprises a catheter sheath shell (1) at the far end and a catheter sheath cap (2) at the near end, and the catheter sheath shell (1) and the catheter sheath cap (2) can move relatively in the axial direction; the distal end of the catheter sheath cap (2) extends inwards to form a limiting ring (202), a limiting lug (101) is annularly arranged at a position, close to the proximal end, of the catheter sheath shell (1), and the limiting ring (202) of the catheter sheath cap (2) is matched with the limiting lug (101) of the catheter sheath shell (1) to limit the relative displacement stroke between the catheter sheath cap (2) and the catheter sheath shell (1).
3. The adjustable hemostasis valve device (100) of claim 2, wherein: the opening adjusting mechanism (12) comprises a first positioning disc (4) and an installation cylinder (5), the first positioning disc (4) is fixedly connected with the near end of the sealing element (3), the sealing element (3) is fixedly connected with the first positioning disc (4) and then installed in the installation cylinder (5), a plurality of first positioning pins (401) are distributed on the periphery of the first positioning disc (4), and a plurality of spiral sliding guide grooves (501) matched with the positioning pins (401) are formed in the near end of the installation cylinder (5); when the catheter sheath cap (2) moves in the axial direction, the first positioning pin (401) of the first positioning disk (4) slides along the sliding guide groove (501) of the mounting barrel (5), and the opening size of the spiral flow passage (301) of the sealing element (3) is adjusted.
4. The adjustable hemostasis valve device (100) of claim 3, wherein: the opening adjusting mechanism (12) further comprises a second positioning disc (6), the second positioning disc (6) is fixedly connected with the far end of the sealing element (3), a plurality of second positioning pins (601) are distributed on the periphery of the second positioning disc (6), a plurality of positioning holes (502) are formed in the far end of the mounting cylinder (5), the second positioning pins (601) of the second positioning disc (6) are matched with the positioning holes (502) of the mounting cylinder (5), and the far end of the sealing element (3) is fixed with the mounting cylinder (5).
5. The adjustable hemostasis valve device (100) of claim 4, wherein: the surface that first positioning disk (4) and second positioning disk (6) are close to sealing member (3) all is provided with first step (402), the corresponding position at sealing member (3) both ends is provided with second step (303), first step (402) with second step (303) stagger along circumference, first positioning disk (4) with second positioning disk (6) pass through first step (402) with second step (303) with bonding together of sealing member (3).
6. The adjustable hemostasis valve device (100) of claim 1, wherein: the sealing element is characterized by further comprising a one-way valve (8), wherein the one-way valve (8) is arranged at two ends or the middle of the sealing element (3) along the axial direction.
7. The adjustable hemostasis valve device (100) of claim 3, wherein: the inner side of the catheter sheath cap (2) is provided with a pushing ring (201), the distal end of the pushing ring (201) is in contact with the proximal end of the first positioning disc (4), and when the catheter sheath cap (2) moves axially, the pushing ring (201) is linked with the first positioning disc (4).
8. The adjustable hemostasis valve device (100) of claim 3, wherein: the catheter sheath is characterized by further comprising a fixing ring (7), the fixing ring (7) is fixedly connected with the near end of the mounting cylinder (5), the periphery of the fixing ring (7) is in threaded connection with the inner wall of the near end of the catheter sheath shell (1), and the mounting cylinder (5) is fixed in the catheter sheath shell (1).
9. The adjustable hemostasis valve device (100) of claim 2, wherein: the catheter sheath cap (2) is in threaded connection with the proximal end of the catheter sheath housing (1), and the catheter sheath cap (2) can be controlled to move axially along the catheter sheath housing (1) by rotating.
10. The adjustable hemostasis valve device (100) of any one of claims 1-8, wherein: the catheter sheath cap assembly further comprises a spring (10) and a driving piece (11), the spring (10) is sleeved on the catheter sheath shell (1) and is located between the limiting ring (202) of the catheter sheath cap (2) and the limiting bump (101) of the catheter sheath shell (1), and the catheter sheath shell (1) and the catheter sheath cap (2) are in clearance fit; the driving piece (11) is rotatably fixed on the catheter sheath housing (1), the end of the driving piece (11) is provided with a cam structure (1101), the cam structure (1101) is contacted with the distal end of the catheter sheath cap (2) for controlling the displacement of the catheter sheath cap (2), and the catheter sheath cap (2) can axially move along the catheter sheath housing (1) under the cooperation of the spring (10) and the cam structure (1101).
11. The adjustable hemostasis valve device (100) of claim 10, wherein: the driving piece (11) comprises a pressing portion (1102) and a cam structure (1101) formed by extending from two sides of the pressing portion (1102), a mounting shaft (1104) is arranged on the cam structure (1101), and the driving piece (11) can be rotatably fixed on the catheter sheath housing (1) through the mounting shaft (1104).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110780973.1A CN113694367A (en) | 2021-07-09 | 2021-07-09 | Adjustable hemostasis valve device |
| PCT/CN2022/104767 WO2023280322A1 (en) | 2021-07-09 | 2022-07-09 | Adjustable hemostasis valve device |
| EP22837067.2A EP4368235A1 (en) | 2021-07-09 | 2022-07-09 | Adjustable hemostasis valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110780973.1A CN113694367A (en) | 2021-07-09 | 2021-07-09 | Adjustable hemostasis valve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113694367A true CN113694367A (en) | 2021-11-26 |
Family
ID=78648450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110780973.1A Pending CN113694367A (en) | 2021-07-09 | 2021-07-09 | Adjustable hemostasis valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113694367A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114711926A (en) * | 2022-06-08 | 2022-07-08 | 深圳佰特微医疗科技有限公司 | Sealing device and conveying system |
| WO2023280322A1 (en) * | 2021-07-09 | 2023-01-12 | 江苏朴芃医疗科技有限公司 | Adjustable hemostasis valve device |
| WO2023015653A1 (en) * | 2021-08-10 | 2023-02-16 | 上海腾复医疗科技有限公司 | Introducer sheath sealing device |
| CN116570830A (en) * | 2023-05-30 | 2023-08-11 | 北京管桥医疗科技有限公司 | Vascular sheath hemostasis valve and medical instrument |
-
2021
- 2021-07-09 CN CN202110780973.1A patent/CN113694367A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023280322A1 (en) * | 2021-07-09 | 2023-01-12 | 江苏朴芃医疗科技有限公司 | Adjustable hemostasis valve device |
| WO2023015653A1 (en) * | 2021-08-10 | 2023-02-16 | 上海腾复医疗科技有限公司 | Introducer sheath sealing device |
| CN114711926A (en) * | 2022-06-08 | 2022-07-08 | 深圳佰特微医疗科技有限公司 | Sealing device and conveying system |
| CN114711926B (en) * | 2022-06-08 | 2022-09-02 | 深圳佰特微医疗科技有限公司 | Sealing device and conveying system |
| CN116570830A (en) * | 2023-05-30 | 2023-08-11 | 北京管桥医疗科技有限公司 | Vascular sheath hemostasis valve and medical instrument |
| CN116570830B (en) * | 2023-05-30 | 2024-03-22 | 北京管桥医疗科技有限公司 | Vascular sheath hemostasis valve and medical instrument |
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