A pressing component, a connector, and a catheter sheath

Abstract

The present invention provides a pressing component and a connector, and a catheter sheath. The pressing component includes a connecting piece, a button, a turntable, a hemostatic valve pressing block, and a hemostatic valve made of an elastic material. The connecting piece provides support for the entire structure. By setting a protrusion and a limiting structure on its inner cavity, a radial and axial motion slideway is provided for the wedge-shaped clamping position on the turntable. By designing the wedge-shaped structure of the button and the wedge-shaped clamping position of the turntable, the button applies force to the wedge-shaped clamping position through the wedge-shaped structure to rotate the turntable to a first motion state or a second motion state, thereby realizing the opening and closing of the hemostatic valve. The present invention realizes that the hemostatic valve can be opened and closed by only pressing a button in one direction. The application of the scheme of the present invention can improve the convenience of operation, reduce the operation time of doctors, and reduce the bleeding of patients.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices and relates to a pressing component, a connector and a catheter sheath. Background Art

[0002] Y-type connectors are mainly used in percutaneous transluminal coronary angioplasty (PTCA) and are necessary instruments for interventional treatment. The main function of the Y-type connector is to assist in the introduction of contrast agents, guidewires or other medical devices in conjunction with balloon dilatation catheters during interventional procedures, as well as to control blood backflow and provide a fluid pathway into the interventional system when using a guide catheter or dilatation catheter.

[0003] The push-type Y-type connector is currently mainly divided into a single push type and a rotation + push combination type. Among them, the single push type Y-type connector only relies on the hemostatic valve to achieve channel closure. When the hemostatic valve is opened, the lock structure used to fix the position of the hemostatic valve is set on the outside of the shell, resulting in a larger device shape and inconvenient for doctors to hold and operate. The rotation + push combination Y-type connector has a fixed valve that can be tightened, which can make up for the bleeding and negative pressure leakage defects of the single push type Y-type connector; the lock structure of the hemostatic valve is generally set inside the shell, the product size is reduced, and it is easy to hold; but the operation of its lock fixing is: after the button is pressed to open the hemostatic valve, a twisting operation must be applied to the button to lock it, and a reverse twisting operation must be applied to unlock it, which is slightly inconvenient to operate, increasing the operating time of the surgeon, and the patient's bleeding during the operation also increases accordingly. Summary of the invention

[0004] The purpose of the present invention is to provide a pressing assembly, a connector, and a catheter sheath to improve the convenience of operation, reduce the doctor's operation time, and reduce the patient's bleeding.

[0005] To solve the above technical problems, the present invention provides a pressing assembly for use in a connector or a catheter sheath, comprising: a connecting piece, a button with a through hole, a turntable with a through hole, a hemostatic valve pressing block with a through hole, and a hemostatic valve made of an elastic material;

[0006] The two ends of the connecting piece are connected to form a hollow inner cavity, the end of one end of the button is a pressing portion and is located outside the one end of the connecting piece, and the end of the other end of the button is arranged in sequence with the turntable, the hemostatic valve pressure block and the hemostatic valve and is located in the inner cavity;

[0007] The other end of the connecting piece is used to connect with the main body of the connector or the sheath seat of the catheter sheath, and the inner wall of the connecting piece at one end close to the button is evenly spaced along the circumference and provided with n protrusions extending in the axial direction of the inner cavity and protruding in the radial direction, and the portion between any two adjacent protrusions forms a first slideway, and a limiting structure is provided at the bottom of the protrusion, and the limiting structure is connected with two adjacent first slideways to form a second slideway, wherein n is a positive integer greater than or equal to 2;

[0008] One end of the turntable is connected to the hemostatic valve pressing block, the outer wall of one end of the turntable is provided with n wedge-shaped clamping positions along the circumferential direction, the other end of the turntable is rotatably connected to the end of the other end of the button, and the end of the other end of the button has 2n wedge-shaped structures matching the shape of the wedge-shaped clamping positions;

[0009] The button applies force to the wedge-shaped position through the wedge-shaped structure to move the turntable to the first motion state or the second motion state;

[0010] When the turntable is in the first motion state, the wedge-shaped clamp is located in the limiting structure, and the hemostatic valve pressing block squeezes the hemostatic valve to open the hemostatic valve;

[0011] When the turntable is in the second motion state, the wedge-shaped clamp is located in the first slideway, and the hemostatic valve pressing block is away from the hemostatic valve to close the hemostatic valve.

[0012] Optionally, the wedge-shaped structure can move in the inner cavity of the connecting member to apply force to the wedge-shaped position to move the turntable to the first movement state or the second movement state.

[0013] Optionally, the shape of the limiting structure matches the shape of the wedge-shaped clamping position; the shape of the wedge-shaped structure matches the shape of the wedge-shaped clamping position.

[0014] Optionally, the end of the other end of the button is recessed inward to form an annular groove, the annular groove matches the shape of the other end of the turntable, and the other end of the turntable is sleeved in the annular groove.

[0015] Optionally, the hemostatic valve pressing block is a conical structure, a large end of which is connected to the turntable, and a small end is used to squeeze the hemostatic valve under the push of the turntable to open the hemostatic valve.

[0016] Optionally, the outer diameter of the large end of the hemostatic valve pressing block is smaller than the diameter of the circle defined by the outer sides of the n wedge-shaped clamping positions.

[0017] Optionally, at least one elastic claw is provided on the outer wall of the button along the circumferential direction, and the elastic claw is located directly above the wedge-shaped structure;

[0018] A limiting portion matching the elastic claw is provided on the top of the first slideway of the connecting member to limit the button from being separated from the connecting member.

[0019] Optionally, the pressing assembly further comprises a fixed valve pressing block and a fixed valve, wherein the fixed valve pressing block and the fixed valve are sequentially arranged between the hemostatic valve and the main body of the connector or the sheath seat of the catheter sheath;

[0020] Mutually matching threads are arranged between the outer periphery of the fixed valve pressing block and the inner wall of the connecting piece. When the connecting piece and the fixed valve pressing block are tightened, the fixed valve pressing block squeezes the fixed valve so that the fixed valve is closed.

[0021] Optionally, a gasket is provided between the connecting member and the hemostatic valve.

[0022] Optionally, the hemostatic valve is provided with an incision running through the hemostatic valve.

[0023] The present invention also provides a connector, comprising a main body, a joint assembly and a pressing assembly as described in any one of the above items, wherein the joint assembly is arranged at the interface end of the main body, and the pressing assembly is arranged at the inlet end of the main body.

[0024] The present invention further provides a catheter sheath, comprising a sheath seat and a pressing assembly as described in any one of the above items, wherein the pressing assembly is connected to the sheath seat.

[0025] Compared with the prior art, the pressing assembly provided by the present invention includes a connecting piece, a button, a turntable, a hemostatic valve pressure block and a hemostatic valve made of elastic material. The connecting piece provides support for the entire structure, and by arranging a protrusion and a limiting structure on its inner cavity, a radial and axial movement slideway is provided for the wedge-shaped clamping position on the turntable. By designing the wedge-shaped structure of the button and the wedge-shaped clamping position of the turntable, the button applies force to the wedge-shaped clamping position through the wedge-shaped structure to rotate the turntable to a first motion state or a second motion state, thereby realizing the opening and closing of the hemostatic valve. The present invention realizes that the opening and closing of the hemostatic valve can be realized by pressing a button in one direction, which further simplifies the opening and closing operations of the hemostatic valve, improves the operating convenience of the surgeon, reduces the operating time, improves the surgical efficiency, and reduces the amount of bleeding during the patient's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1a is a schematic structural diagram of a connector provided by an embodiment of the present invention;

[0027] Figure 1b is a schematic diagram of the structure of an existing catheter sheath;

[0028] Figure 2a yes Figure 1aA schematic structural diagram of a connecting member in the illustrated embodiment;

[0029] Figure 2b yes Figure 2a Schematic diagram of the slideway expansion of the middle connecting piece;

[0030] Figure 3 yes Figure 1a A schematic diagram of the structure of the buttons in the illustrated embodiment;

[0031] Figure 4 yes Figure 1a A schematic diagram of the structure of the turntable in the illustrated embodiment;

[0032] Figure 5 yes Figure 1a A schematic diagram of the structure of the hemostatic valve pressing block in the illustrated embodiment;

[0033] Figure 6 yes Figure 1a A schematic diagram of the structure of the hemostatic valve in the illustrated embodiment;

[0034] Among them, 100-main body; 110-extension section; 200-connector assembly; 300-pressing assembly; 310-connecting piece; 311-inner cavity; 312-bump; 313-first slide; 314-second slide; 315-limiting structure; 316-limiting part; 320-button; 321-pressing part; 322-wedge structure; 323-annular groove; 324-elastic claw; 330-turntable; 331-wedge clamping position; 340-hemostatic valve block; 350-hemostatic valve; 351-incision; 360-fixed valve block; 370-fixed valve; 380-gasket; 400-sheath seat; 500-sheath tube; 600-three-way valve; 700-PU tube. DETAILED DESCRIPTION

[0035] The following is a further detailed description of a pressing assembly, a connector, and a catheter sheath proposed by the present invention in combination with the accompanying drawings and specific embodiments. According to the claims and the following description, the advantages and features of the present invention will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar figure numbers in the drawings represent the same or similar parts.

[0036] The core idea of ​​the present invention is to provide a pressing assembly, a connector, and a catheter sheath to solve the problems of inconvenient operation of existing connectors and catheter sheaths, long operation time for surgeons, and increased bleeding of patients during surgery.

[0037] To realize the above idea, the present invention provides a pressing assembly for use in a connector or a catheter sheath, comprising: a connecting piece, a button with a through hole, a turntable with a through hole, a hemostatic valve pressing block with a through hole, and a hemostatic valve made of elastic material.

[0038] Furthermore, the present invention also provides a connector, comprising a main body, a joint assembly and the pressing assembly of the present invention, wherein the joint assembly is arranged at the interface end of the main body, and the pressing assembly is arranged at the inlet end of the main body. The present invention also provides a catheter sheath, comprising the pressing assembly of the present invention.

[0039] The connector and the catheter sheath realize, through the pressing component, the opening and closing of the hemostatic valve can be controlled by simply pressing a button, thereby improving the operating convenience of the connector and the catheter sheath.

[0040] Please refer to Figure 1a , which is a schematic diagram of the structure of a connector provided by an embodiment of the present invention. Figure 1a As shown, a connector includes a main body 100, a connector assembly 200 and a pressing assembly 300. The connector assembly 200 is arranged at the interface end of the main body 100, and the pressing assembly 300 is arranged at the inlet end of the main body 100. The inlet end and the interface end are used to assist in establishing a working channel for the guide wire to enter the human body in vitro. The main body 100 also has an extension section 110, which is used to connect with other medical devices such as injection connectors to inject contrast agents and other drugs to facilitate surgery. The connector assembly 200 can be a conical locking male connector.

[0041] Please refer to Figure 1b , which is a schematic diagram of the structure of an existing catheter sheath, the existing catheter sheath includes: a sheath seat 400, a sheath tube 500, a three-way valve 600, and a PU tube 700, one end of the sheath seat 400 is connected to the sheath tube 500, the other end of the sheath seat 400 is connected to the PU tube 700, and the head end of the PU tube is connected to the three-way valve 600. The difference between the catheter sheath provided by the present invention and the existing catheter sheath is that it also includes the pressing component 300, and the pressing component 300 can be connected to the sheath seat 400.

[0042] Please refer to Figure 2- Figure 6 , Figure 2- Figure 6 The schematic diagrams of the structures of the connector, the button, the turntable, the hemostatic valve pressing block, and the hemostatic valve are shown respectively. The pressing assembly 300 may include: a connector 310, a button 320 with a through hole, a turntable 330 with a through hole, a hemostatic valve pressing block 340 with a through hole, and a hemostatic valve 350 made of an elastic material. The elastic material may be silicone.

[0043] The two ends of the connector 310 are connected to form a hollow inner cavity 311. The end of one end of the button 320 is a pressing portion 321 and is located outside the one end of the connector 310. The end of the other end of the button 320 is arranged in sequence with the turntable 330, the hemostatic valve pressing block 340 and the hemostatic valve 350 and is located in the inner cavity 311. Optionally, a gasket 380, such as a stainless steel gasket, can be provided between the connector 310 and the hemostatic valve 350 to prevent the hemostatic valve 350 from turning outward during the pressure-maintaining process and to enhance the pressure-maintaining effect.

[0044] The other end of the connector 310 is used to connect with the connector body 100 or the sheath seat 400 of the catheter sheath. The inner wall of the connector 310 near the button 320 is evenly spaced along the circumference and provided with n protrusions 312 extending in the axial direction of the inner cavity 311 and protruding in the radial direction. A first slideway 313 is formed between any two adjacent protrusions 312. A limiting structure 315 is provided at the bottom of the protrusion. The limiting structure 315 is connected with two adjacent first slideways 313 to form a second slideway 314, wherein n is a positive integer greater than or equal to 2.

[0045] One end of the turntable 330 is connected to the hemostatic valve pressure block 340, and the outer wall of one end of the turntable 330 is provided with n wedge-shaped positions 331 along the circumferential direction. The other end of the turntable 330 is rotatably connected to the end of the other end of the button 320, and the end of the other end of the button 320 has 2n wedge-shaped structures 322 matching the shape of the wedge-shaped positions 331.

[0046] The button 320 applies force to the wedge-shaped position 331 through the wedge-shaped structure 322 to move the turntable 330 to the first motion state or the second motion state.

[0047] When the turntable 330 is in the first movement state, the wedge-shaped clamping position 331 is located in the limiting structure 315, and the hemostatic valve pressing block 340 presses the hemostatic valve 350 to open the hemostatic valve 350.

[0048] When the turntable 330 is in the second motion state, the wedge-shaped clamping position 331 is located in the first slideway 313 , and the hemostatic valve pressing block 340 is away from the hemostatic valve 350 to close the hemostatic valve 350 .

[0049] In addition, if Figure 6 As shown, the hemostatic valve 350 is further provided with a cutout 351 penetrating the hemostatic valve. The cutout 351 may be in a cross shape. Of course, the cutout 351 may also be in other shapes, which is not limited in the present invention.

[0050] Specifically, Figure 2a and Figure 2b As shown, the limiting structure 315 is a sawtooth table, and the limiting structure 315 matches the shape of the wedge-shaped clamping position 331. The first slideway 313 provides an axial motion slideway for the wedge-shaped clamping position 331, and the sawtooth table of the second slideway along the inner wall of the inner cavity 311 provides a radial motion slideway for the wedge-shaped clamping position 331. When the turntable 330 moves from the second motion state to the first motion state, the wedge-shaped clamping position 331 moves from the radial motion slideway to the axial motion slideway. In order to facilitate the application of force to the wedge-shaped clamping position 331, the shape of the wedge-shaped structure 322 matches the shape of the wedge-shaped clamping position 331.

[0051] The wedge-shaped structure 322 can move in the inner cavity 311 of the connecting member 310 to apply force to the wedge-shaped clamping position 331 so that the turntable 330 moves to the first motion state or the second motion state. When the turntable 330 is in the second motion state, the wedge-shaped structure 322 located in the inner cavity 311 of the connecting member 310 applies force to the wedge-shaped clamping position 331 located in the first slideway 313, so that the wedge-shaped clamping position 331 moves in the direction of squeezing the hemostatic valve 350. When the wedge-shaped clamping position 331 reaches the end of the first slideway 313, the turntable 330 rotates, and the wedge-shaped clamping position 331 enters the second slideway 314 and is clamped at the limiting structure 315. The turntable 330 is converted from the second motion state to the first motion state, and then the wedge-shaped structure 322 located in the inner cavity 311 of the connecting member 310 applies force to the wedge-shaped clamping position 331, so that the wedge-shaped clamping position 331 moves in the direction of squeezing the hemostatic valve 350. When the wedge-shaped clamping position 331 reaches the end of the second slideway 314, the wedge-shaped clamping position 331 enters another first slideway 313 from the serrated table surface. At this point, the turntable 330 is converted from the first motion state to the second motion state.

[0052] like Figure 3 As shown, the end of the other end of the button 320 can be recessed inward to form an annular groove 323, and the annular groove 323 matches the shape of the other end of the turntable 330. The other end of the turntable 330 is sleeved in the annular groove 323, and the wedge-shaped structure 322 is located on the button 320 at the end outside the annular groove 323.

[0053] like Figure 5 As shown, the hemostatic valve pressing block 340 may be a conical structure, with a large end 341 connected to the turntable 330, and a small end 342 used to squeeze the hemostatic valve 350 under the push of the turntable 330 to open the hemostatic valve 350. The outer diameter of the large end 341 of the hemostatic valve pressing block 340 is smaller than the diameter of the circle defined by the outer sides of the n wedge-shaped clamping positions 331. Figure 1aIn the illustrated embodiment, the inner end of the annular groove 323 of the button 320 contacts the inner wall of the hemostatic valve pressing block 340 near the large end 341, and the through hole of the button 320 is connected with the through hole of the hemostatic valve pressing block 340 to form a channel, which is the working channel of the connector for the guide wire to pass through.

[0054] The outer wall of the button 320 is also provided with at least one elastic claw 324 along the circumferential direction, and the elastic claw 324 is located directly above the wedge-shaped structure 322; accordingly, a limiting portion 316 matching the elastic claw 324 is provided at the top of the first slideway 313 of the connecting member 310 to limit the button 320 from being separated from the connecting member 310. The elastic claw 324 is located in the first slideway 313, and the button 320 is clamped at the top of the connecting member 310 through the limiting portion 316 and the elastic claw 324 to prevent it from sliding out.

[0055] Further, such as Figure 1a As shown, the pressing assembly 300 may further include a fixed valve pressing block 360 and a fixed valve 370. Figure 1a As shown, in the connector, the fixed valve pressing block 360 and the fixed valve 370 are arranged in sequence between the hemostatic valve 350 and the main body 100 of the connector, and in the catheter sheath, the fixed valve pressing block 360 and the fixed valve 370 are arranged in sequence between the hemostatic valve 350 and the sheath seat 400 of the catheter sheath, and mutually matching threads are provided between the outer periphery of the fixed valve pressing block 360 and the inner wall of the connecting piece 310. When the connecting piece 310 and the fixed valve pressing block 360 are tightened, the fixed valve pressing block 360 squeezes the fixed valve 370 so that the fixed valve 370 is closed.

[0056] The movement process of the pressing assembly 300 when in use is introduced below. First, when the wedge-shaped clamping position 331 is in the second movement state, the pressing portion 321 of the button 320 is pressed, so that the wedge-shaped structure 322 of the button 320 slides down, thereby pushing the turntable 330 and the hemostatic valve pressing block 340 to move downward together; when moving downward, the wedge-shaped structure 322 on the button 320 supports the wedge-shaped clamping position 331 of the turntable 330, that is, one of the inclined surfaces at the end of the wedge-shaped structure 322 contacts the upper surface of the wedge-shaped clamping position 311, so that the wedge-shaped clamping position 331 slides downward along the first slide 313, and the small end conical surface of the hemostatic valve pressing block 340 squeezes into and opens the cutout 351 of the hemostatic valve 350, opening the hemostatic valve 350 to form a channel.

[0057] When the button 320 is pressed to push the hemostatic valve pressure block 340 to near the end of the stroke, the wedge-shaped clamping position 331 of the turntable 330 is pushed past the critical point of the first slide 313 and escapes from the first slide 313. Under the push of the wedge-shaped structure 322 of the button 320, the wedge-shaped clamping position 331 of the turntable 330 rotates slightly and enters the second slide 314. Then, the pressure on the button 320 is released, and the hemostatic valve block 340 bounces upward under the pressure of the hemostatic valve 350, while driving the turntable 330 and the button 320 to rise upward. During the rising process of the turntable 330, the wedge-shaped clamping position 331 is stuck by the limiting structure 315, that is, the upper surface of the wedge-shaped clamping position 331 is in contact with the serrated table surface, the lifting of the turntable 330 is stuck, and the hemostatic valve block 340 is locked and fixed. At this time, the hemostatic valve block 340 is still in the hemostatic valve 350, so that the hemostatic valve 350 is opened and locked. At this time, the wedge-shaped clamping position 331 is in the first movement state.

[0058] When the hemostatic valve 350 needs to be closed, the button 320 is pressed again, and the wedge-shaped structure 322 in the cavity of the connecting member 310 applies force to the wedge-shaped clamping position 331 to move the wedge-shaped clamping position 331 downward. Under the push of the wedge-shaped structure 322, the turntable 330 rotates again to a certain extent, and the wedge-shaped clamping position 331 escapes from the second slideway 314 and enters another first slideway 313. At this time, the button 320 is released, and the hemostatic valve pressing block 340 is in the hemostatic valve 350. 50, it bounces upward under the pressure, and at the same time drives the turntable 330 and the button 320 to rise upward. During the rising process of the turntable 330, the wedge-shaped clamping position 331 is located in the first slideway 313 and slides upward until the elastic claw 324 reaches the limit portion 316 and gets stuck. The small end conical surface of the hemostatic valve pressing block 340 withdraws from the hemostatic valve 350, and the hemostatic valve pressing block 340 drives the turntable 330 and the button 320 to return to their original positions, and the hemostatic valve 350 is closed.

[0059] To summarize, compared with the prior art, the pressing assembly provided by the present invention includes a connecting piece, a button, a turntable, a hemostatic valve pressure block and a hemostatic valve made of elastic material. The connecting piece provides support for the entire structure, and by arranging a protrusion and a limiting structure on its inner cavity, a radial and axial movement slideway is provided for the wedge-shaped position on the turntable. By designing the wedge-shaped structure of the button and the wedge-shaped position of the turntable, the button applies force to the wedge-shaped position through the wedge-shaped structure to rotate the turntable to the first motion state or the second motion state, thereby realizing the opening and closing of the hemostatic valve. The present invention realizes that the opening and closing of the hemostatic valve can be realized by pressing a button in one direction, which further simplifies the opening and closing operations of the hemostatic valve, improves the operating convenience of the surgeon, reduces the operating time, improves the surgical efficiency, and reduces the amount of bleeding during the patient's operation.

[0060] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A pressing assembly, used in a connector or a catheter sheath, characterized in that: include: A connecting piece, a button with a through hole, a turntable with a through hole, a hemostatic valve pressing block with a through hole, and a hemostatic valve made of elastic material; The two ends of the connecting piece are connected to form a hollow inner cavity, the end of one end of the button is a pressing portion and is located outside the one end of the connecting piece, and the end of the other end of the button is arranged in sequence with the turntable, the hemostatic valve pressure block and the hemostatic valve and is located in the inner cavity; The other end of the connecting piece is used to connect with the main body of the connector or the sheath seat of the catheter sheath, and the inner wall of the connecting piece at one end close to the button is evenly spaced along the circumference and provided with n protrusions extending in the axial direction of the inner cavity and protruding in the radial direction, and the portion between any two adjacent protrusions forms a first slideway, and a limiting structure is provided at the bottom of the protrusion, and the limiting structure is connected with two adjacent first slideways to form a second slideway, wherein n is a positive integer greater than or equal to 2; One end of the turntable is connected to the hemostatic valve pressing block, the outer wall of one end of the turntable is provided with n wedge-shaped clamping positions along the circumferential direction, the other end of the turntable is rotatably connected to the end of the other end of the button, and the end of the other end of the button has 2n wedge-shaped structures matching the shape of the wedge-shaped clamping positions; The button applies force to the wedge-shaped position through the wedge-shaped structure to move the turntable to the first motion state or the second motion state; When the turntable is in the first motion state, the wedge-shaped clamp is located in the limiting structure, and the hemostatic valve pressing block squeezes the hemostatic valve to open the hemostatic valve; When the turntable is in the second motion state, the wedge-shaped clamp is located in the first slideway, and the hemostatic valve pressing block is away from the hemostatic valve to close the hemostatic valve.

2. The pressing assembly according to claim 1, wherein: The wedge-shaped structure can move in the inner cavity of the connecting member to apply force to the wedge-shaped position to move the turntable to the first movement state or the second movement state.

3. The pressing assembly according to claim 1, characterized in that: The shape of the limiting structure matches the shape of the wedge-shaped clamping position; the shape of the wedge-shaped structure matches the shape of the wedge-shaped clamping position.

4. The pressing assembly according to claim 1, wherein: The end of the other end of the button is recessed inward to form an annular groove, the annular groove matches the shape of the other end of the turntable, and the other end of the turntable is sleeved in the annular groove.

5. The pressing assembly according to claim 1, wherein: The hemostatic valve pressing block is a conical structure, a large end of which is connected to the turntable, and a small end is used to press the hemostatic valve under the push of the turntable to open the hemostatic valve.

6. The pressing assembly according to claim 5, characterized in that: The outer diameter of the large end of the hemostatic valve pressing block is smaller than the diameter of the circle defined by the outer sides of the n wedge-shaped clamping positions.

7. The pressing assembly according to claim 1, wherein: At least one elastic claw is disposed on the outer wall of the button along the circumferential direction, and the elastic claw is located directly above the wedge-shaped structure; A limiting portion matching the elastic claw is provided on the top of the first slideway of the connecting member to limit the button from being separated from the connecting member.

8. The pressing assembly according to claim 1, wherein: The pressing assembly further comprises a fixed valve pressing block and a fixed valve, wherein the fixed valve pressing block and the fixed valve are sequentially arranged between the hemostatic valve and the main body of the connector or the sheath seat of the catheter sheath; Mutually matching threads are arranged between the outer periphery of the fixed valve pressing block and the inner wall of the connecting piece. When the connecting piece and the fixed valve pressing block are tightened, the fixed valve pressing block squeezes the fixed valve so that the fixed valve is closed.

9. The pressing assembly according to claim 1, wherein: A gasket is arranged between the connecting piece and the hemostatic valve.

10. The pressing assembly according to claim 1, wherein: The hemostatic valve is provided with an incision penetrating the hemostatic valve.

11. A connector, characterized in that: It comprises a main body, a joint assembly and a pressing assembly as described in any one of claims 1 to 10, wherein the joint assembly is arranged at the interface end of the main body, and the pressing assembly is arranged at the inlet end of the main body.

12. A catheter sheath, characterized in that: It comprises a sheath seat and a pressing assembly as described in any one of claims 1 to 10, wherein the pressing assembly is connected to the sheath seat.

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