Hemostatic valve and medical device

Abstract

The application discloses a hemostatic valve and medical equipment, which comprises a main body with an inner cavity and three joints, a first connecting cap connected with the first joint of the main body, a second connecting cap detachably connected with the second joint of the main body, and a third connecting cap sleeved outside the second connecting cap. The application can resist high positive pressure without leakage, can conveniently and quickly tightly seal the channel, and is convenient to operate.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a hemostatic valve and a medical device. Background Technology

[0002] Hemostatic valves facilitate the assembly and positioning of instruments in vascular interventional procedures, assisting in the assembly and relative positioning of other instruments and effectively reducing blood flow loss. They are required in almost all vascular interventional procedures. Currently available hemostatic valves prioritize ease of operation but cannot fully meet the positive pressure requirements of arterial interventions; conversely, those prioritizing pressure tolerance are difficult to operate. These issues urgently need to be addressed. Summary of the Invention

[0003] The purpose of this invention is to provide a hemostatic valve and medical device that can withstand high positive pressure without leakage, can quickly and tightly seal the channel, and is easy to operate.

[0004] To achieve the above objectives, the present invention provides the following solution: a hemostatic valve, comprising: a main body having an inner cavity and three connectors, a first connecting cap connected to a first connector of the main body, a second connecting cap detachably connected to a second connector of the main body, and a third connecting cap sleeved on the outside of the second connecting cap.

[0005] Based on the above technical solution, the following supplementary technical solutions are further included:

[0006] Preferably, it is a Y-shaped valve, and the central axis of the third connector of the main body intersects the central axis of the first connector or the second connector at an angle.

[0007] Preferably, the interiors of the first connector, the second connector, and the third connector are in communication with the inner cavity.

[0008] Preferably, the first connecting cap rotates relative to the main body and includes a first outer cylinder, a first inner cylinder located inside the first outer cylinder and having a first central hole, a first thread disposed on the inner wall of the first outer cylinder and surrounding the first inner cylinder and connected to an external instrument, and a second thread disposed on the inner wall of the first outer cylinder and located at one end of the first inner cylinder and connected to a first connector.

[0009] Preferably, the second connecting cap includes a second outer cylinder, a second inner cylinder located inside the second outer cylinder and having a second central hole, and a third thread disposed on the inner wall of the second outer cylinder, surrounding the second inner cylinder and connected to the second connector.

[0010] Preferably, the third connecting cap includes a third outer cylinder, a third inner cylinder located inside the third outer cylinder and having a third central hole, and a 7-shaped groove disposed on the inner wall of the second outer cylinder, surrounding the second inner cylinder and connected to the second connecting cap.

[0011] Preferably, the assembly further includes a sealing component comprising a sealing plug housed within the second connector, a sealing ring disposed between the first connecting cap and the first connector, and a sealing gasket disposed adjacent to the sealing plug.

[0012] Preferably, the diameter of the third inner cylinder is smaller than the diameter of the second central hole, and the diameter of the second central hole is smaller than the diameter of the inner cavity.

[0013] The present invention also provides the following solution: a medical device comprising a delivery catheter, a guidewire and the aforementioned hemostatic valve, wherein the proximal end of the hemostatic valve is detachably connected to the delivery catheter, and the proximal end of the guidewire is detachably connected to the distal end of the hemostatic valve.

[0014] The beneficial effects of this invention are: it can withstand high positive pressure without leakage, it can quickly and tightly seal the channel, and it is easy to operate. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is an exploded view of the present invention;

[0018] Figure 4 This is a perspective view of the first connecting cap in this invention at an angle;

[0019] Figure 5 and Figure 4 Similarly, this is a 3D image from another angle;

[0020] Figure 6 This is a perspective view of the second connecting cap in this invention at an angle;

[0021] Figure 7 and Figure 6 Similarly, this is a 3D image from another angle;

[0022] Figure 8 This is a perspective view of the third connecting cap in this invention at an angle. Detailed Implementation

[0023] The preferred embodiments of the present invention are described below. It should be understood that the embodiments are for better explanation of the present invention and are not intended to limit the present invention.

[0024] In the description of this invention, it should be understood that the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] Example: Figure 1-8 As shown, the present invention discloses a first embodiment of a hemostatic valve, which is preferably a Y-shaped valve, comprising: a body 100 having an inner cavity 110 and three connectors (120, 140, 160), a first connecting cap 200 connected to the first connector 120 of the body 100, a second connecting cap 300 detachably connected to the second connector 140 of the body 100, and a third connecting cap 400 sleeved on the outside of the second connecting cap 300.

[0028] The central axis of the third connector 160 of the main body 100 intersects the central axis of the first connector 120 or the second connector 140 at an angle. The interiors of the first connector 120, the second connector 140, and the third connector 160 are in communication with the inner cavity 110.

[0029] The first connecting cap 200 rotates relative to the main body 100 and includes a first outer cylinder 210, a first inner cylinder 220 located inside the first outer cylinder 210 and having a first central hole 222, a first connecting cavity 212 located between the first outer cylinder 210 and the first inner cylinder 220, a first thread 214 disposed on the inner wall of the first outer cylinder 210 and surrounding the first inner cylinder 220 and connected to an external instrument, a plurality of first ribs 216 spaced apart on the side wall of the first outer cylinder 210 and arranged circumferentially, and a second thread 218 disposed on the inner wall of the first outer cylinder 210, located at one end of the first inner cylinder 220 and connected to the first connector 120. When in use, the head is connected to other instruments via a standard Luer connector. During use, the first connecting cap 200 needs to be able to rotate relative to the main body 100 while remaining detached from the main body 100, and the connection portion with the main body 100 needs to withstand high positive pressure without leakage. The first central hole 222 communicates with one end of the inner cavity 110.

[0030] The second connecting cap 300 includes a second outer cylinder 310, a second inner cylinder 320 located inside the second outer cylinder 310 and having a second central hole 322, a cap seat 330 located at the bottom of the second outer cylinder 310, a second connecting cavity 312 located between the second outer cylinder 310 and the second inner cylinder 320, and a third thread 314 disposed on the inner wall of the second outer cylinder 310, surrounding the second inner cylinder 320 and connected to the second connector 140. The second central hole 322 communicates with the other end of the inner cavity 110. The cap seat 330 is provided with a cap seat hole 302 communicating with the second central hole 322, and a plurality of cap seat ribs 332 located on the outer side and circumferentially spaced. The cap seat ribs 332 at least partially protrude from the outer surface of the second outer cylinder 310. There is a radial difference between the outer sides of the cap seat 330 and the second outer cylinder 310, and a step is formed between them. The diameter of the central section of the inner cavity 110 is larger than the diameter of the first central hole 222 and smaller than the diameter of the second central hole 322. The diameter of the inner cavity 110 at the second connector 140 is larger than the diameter of the central section of the inner cavity 110 to form a stepped hole.

[0031] The third connecting cap 400 includes a third outer cylinder 410, a third inner cylinder 420 located inside the third outer cylinder 410 and having a third central hole 422, a third connecting cavity 412 located between the third outer cylinder 410 and the third inner cylinder 420, a plurality of 7-shaped grooves 414 disposed on the inner wall of the second outer cylinder 310 and surrounding the second inner cylinder 320 and connected to the second connecting cap 300, and a plurality of recesses 416 disposed on the outer side of the third outer cylinder 410 for increasing friction. The diameter of the third central hole 422 is smaller than the diameter of the inner cavity 110. The 7-shaped grooves 414 are aligned with the corresponding cap seat ribs 332, ensuring that locking or unlocking between the cap seat ribs 332 and the 7-shaped grooves 414 can be achieved when the third connecting cap 400 is rotated. The diameter of the third inner cylinder 420 is smaller than the diameter of the second central hole 322 so as to be inserted into the second central hole 322. The diameter of the third connecting cavity 412 is larger than the diameter of the second connecting cavity 312, so as to at least partially accommodate the second connecting cap 300.

[0032] The present invention further includes sealing assemblies disposed at each connection point, wherein the sealing assemblies include a sealing plug 500 housed in the inner cavity 110 at the second connector 140, a sealing ring 510 disposed between the first connecting cap 200 and the first connector 120, and a sealing gasket 520 disposed adjacent to the sealing plug 500. The sealing plug 500, sealing ring 510, and sealing gasket 520 are all made of soft materials such as silicone. The sealing plug 500 ensures that, during use, it can be squeezed in a specific manner to seal the cavity of the device, allowing it to withstand high positive pressure without leakage. The sealing ring 510 ensures that the connection point can withstand high positive pressure without leakage. The sealing gasket 520 is released immediately after the sealing plug 500 is released; during use, even if the operator does not perform any operation, this sealing gasket 520 can still partially block the flow of fluid, reducing blood loss. The sealing gasket 520 is provided with a star-shaped groove.

[0033] In use, the outer conical Luer connector of the first connecting cap 200 and the inner conical Luer connector of the pre-positioning device are rotated to connect. The third connecting cap 400 is then pushed down, and after being pushed all the way, it is rotated counterclockwise to lock in place. At this point, the internal channel of the hemostatic valve is fully open, allowing the posterior device to easily enter the valve's internal channel. Once the posterior device is in the channel, the third connecting cap 400 can be rotated clockwise and then retracted, restoring the sealing gasket 520 to its normal position. This blocks the internal channel of the hemostatic valve, effectively reducing blood loss. Continue pushing the posterior device to the operator's desired position, then rotate the third connecting cap 400 clockwise. This causes the second connecting cap 300 to rotate, compressing the sealing plug 500 under the action of the threads and filling the inner channel of the hemostatic valve (at the connection between the head of the sealing plug 500 and the main body 100, the inner cavity of the main body 100 is conical, facilitating deformation of the sealing plug 500 under pressure). After the posterior device is used, rotating the third connecting cap 400 counterclockwise releases the inner channel, releasing the relative fixation between the hemostatic valve and the posterior device. In this embodiment, the anterior device can be: a sheath, tube, or other device with an internal Luer connector for peripheral blood vessels, intracranial blood vessels, or coronary arteries; the posterior device can be: a sheath, tube, guidewire, or other access device for peripheral blood vessels, intracranial blood vessels, or coronary arteries, or other devices that need to reach the lesion site through the established access for diagnosis or treatment.

[0034] Similarly, based on the first embodiment, the present invention further discloses a second embodiment of a medical device, which includes a delivery catheter, a guidewire, and a hemostatic valve as in the first embodiment. The proximal end of the hemostatic valve is detachably connected to the delivery catheter, and the proximal end of the guidewire is detachably connected to the distal end of the hemostatic valve.

[0035] This invention can easily expand the silicone sealing gasket to provide a convenient entry channel for the rear-mounted device. The second connecting cap can conveniently and quickly seal the channel when the operator needs to tightly seal the internal channel of the device.

[0036] In summary, this invention can withstand high positive pressure without leakage, can quickly and tightly seal channels, and is easy to operate.

[0037] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A hemostatic valve, characterized in that... It includes: The system comprises a main body with an inner cavity and three connectors, a first connecting cap connected to a first connector of the main body, a second connecting cap detachably connected to a second connector of the main body, a third connecting cap sleeved on the outside of the second connecting cap, and a sealing assembly; it is a Y-shaped valve, and the central axis of the third connector of the main body intersects the central axis of the first or second connector at an angle; the interiors of the first, second, and third connectors are in communication with the inner cavity; the first connecting cap rotates relative to the main body and includes a first outer cylinder, a first inner cylinder located inside the first outer cylinder and having a first central hole, a first thread disposed on the inner wall of the first outer cylinder and surrounding the first inner cylinder and connected to an external instrument, and a second thread disposed on the inner wall of the first outer cylinder and located at one end of the first inner cylinder and connected to the first connector; the second connecting cap includes a second... The system comprises an outer cylinder, a second inner cylinder located within the second outer cylinder and having a second central hole, and a third thread disposed on the inner wall of the second outer cylinder, surrounding the second inner cylinder and connected to the second connector; the third connecting cap includes a third outer cylinder, a third inner cylinder located within the third outer cylinder and having a third central hole, and a 7-shaped groove disposed on the inner wall of the third outer cylinder, surrounding the third inner cylinder and connected to the second connecting cap, wherein the diameter of the third inner cylinder is smaller than the diameter of the second central hole, and the diameter of the second central hole is smaller than the diameter of the inner cavity; wherein the sealing assembly includes a sealing plug housed within the second connector, a sealing ring disposed between the first connecting cap and the first connector, and a sealing gasket disposed adjacent to the sealing plug, wherein the sealing gasket is released immediately after the sealing plug is released; and the sealing gasket is provided with a star-shaped groove.

2. A medical device, characterized in that, It includes a delivery catheter, a guidewire, and a hemostatic valve as described in claim 1, wherein the proximal end of the hemostatic valve is detachably connected to the delivery catheter, and the proximal end of the guidewire is detachably connected to the distal end of the hemostatic valve.

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