Multi-way valve for interventional operation

Abstract

The utility model discloses a multi-way valve for interventional operation, which comprises a main body communicating pipe, a first long straight interventional consumable, a second long straight interventional consumable, a first long straight interventional consumable, a second long straight interventional consumable, a second long straight interventional consumable, and a second long straight interventional consumable, and is characterized in that the main body communicating pipe is provided with an inlet end and a connecting end, the branch pipe is arranged on the side wall of the main body communicating pipe and used for injecting liquid into the main body communicating pipe; the sealing push-pull pipe is provided with a sealing end and an exhaust end, and is provided with a sealing piece which allows the first long straight intervention consumable to penetrate through and keeps sealing fit with the first long straight intervention consumable, the exhaust end is inserted into and connected to the inlet end of the main body communicating pipe in a sealing mode, and the sealing push-pull pipe can move between a first position and a second position in the axial direction relative to the inlet end; wherein at the first position, the exhaust end shields the exhaust port, and at the second position, the exhaust end avoids the exhaust port. The sealing push-pull pipe which is movably matched with the inlet end and provided with the sealing end and the exhaust end is provided, so that the sealing function and the exhaust function of the multi-way valve are decoupled, and the safety of an operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a multi-way valve used for interventional surgery. Background Art

[0002] Interventional therapy is a minimally invasive treatment that uses medical imaging equipment to introduce precision, long, straight interventional consumables such as catheters and guidewires into the human body, thereby diagnosing and locally treating body pathologies through remote control.

[0003] Multi-way valves (such as Y-valve or T-valve) are commonly used medical auxiliary equipment in interventional surgery. They are mainly used to assist in the introduction of contrast agents or saline and other liquids and to cooperate with guide wires or catheters and other interventional consumables into the human body. They also play a role in sealing to prevent blood reflux and fix the guide wires in interventional surgery. After the multi-way valve is injected with saline and other liquids, before the guide wire enters the human body, the air in the multi-way valve needs to be discharged by liquid pressure to avoid air entering the human body and causing air embolism and causing danger.

[0004] In the existing multi-way valve, a sealing plug rotating head is used to press the sealing rubber plug and the sealing pressing sheet onto one end of the multi-way valve body, and the sealing plug rotating head is manually rotated to control the closing and opening of the channel leading to the multi-way valve body. For example, by rotating the sealing plug rotating head to an appropriate position, it can allow long straight interventional consumables (such as guide wires, catheters, etc.) to pass through the sealing plug rotating head, the sealing pressing sheet and the sealing rubber plug to smoothly enter the multi-way valve, and can also achieve the purpose of preventing blood reflux. In addition, by loosening the sealing plug rotating head, exhaust can be performed.

[0005] However, such multi-way valves still have some shortcomings. In particular, the manual rotation operation process is cumbersome and prone to errors. For example, a doctor may forget to open or close the knob during surgery, which poses a great safety hazard to medical work. For another example, it is difficult to accurately rotate the sealing plug rotating head to the appropriate position to achieve the desired effect. Utility Model Content

[0006] The purpose of the utility model is to provide a multi-way valve for interventional surgery, so as to at least partially overcome the deficiencies in the prior art.

[0007] According to an embodiment of the utility model, a multi-way valve for interventional surgery is provided, the multi-way valve comprising:

[0008] A main body connecting pipe, the main body connecting pipe having an entry end for a first long straight interventional consumable to enter and a connection end for connecting a second long straight interventional consumable, the first long straight interventional consumable being able to pass through the second long straight interventional consumable, and a side wall of the entry end being provided with an exhaust port;

[0009] a branch pipe, the branch pipe being arranged on a side wall of the main body connecting pipe and being used for injecting liquid into the main body connecting pipe; and

[0010] A sealed push-pull tube, the sealed push-pull tube having a sealing end and an exhaust end, the sealed end being provided with a sealing member for the first long straight interventional consumable to pass through and maintain a sealed fit therewith, the exhaust end being inserted into and sealingly connected to the entry end of the main body connecting tube, and the sealed push-pull tube being able to move axially between a first position and a second position relative to the entry end, wherein: in the first position, the exhaust end shields the exhaust port so that it is not connected to the main body connecting tube, and in the second position, the exhaust end avoids the exhaust port so that it is connected to the main body connecting tube.

[0011] Advantageously, the entrance end of the main body connecting pipe is formed with an inner conical surface which gradually expands from the inside to the outside along the axial direction, and

[0012] The sealed push-pull tube also includes a middle section located between the sealing end and the exhaust end, the outer diameter of the sealing end is larger than the outer diameter of the exhaust end, and the middle section has an outer conical surface that gradually expands from the exhaust end to the sealing end. When the sealed push-pull tube is located in the first position, the outer conical surface abuts against the inner conical surface.

[0013] In some embodiments, the inlet end of the main body connecting pipe is formed with a tapered hole portion that gradually expands from the inside to the outside along the axial direction and a straight hole portion that extends outward from the tapered hole portion, and the exhaust port is arranged on the side wall of the tapered hole portion; and

[0014] The exhaust end of the sealed push-pull pipe includes a straight pipe portion and a tapered portion whose outer diameter gradually decreases from the straight pipe portion to the end, and the straight pipe portion is sealedly fitted in the straight hole portion.

[0015] When the sealed push-pull tube is located at the first position, the conical portion abuts against and fits the tapered hole portion to shield the exhaust port; when the sealed push-pull tube is located at the second position, the conical portion is disengaged from the tapered hole portion to allow the exhaust port to communicate with the main body connecting tube.

[0016] Advantageously, the main body connecting pipe further comprises an exhaust pipe extending outwardly from the exhaust port.

[0017] Advantageously, the branch pipe is connected to the main body connecting pipe at a position close to the connecting end.

[0018] Advantageously, the seal comprises an elastic sealing sheet having a first surface and a second surface, the first surface faces the outside of the main body connecting tube and is provided with a first slit, the second surface faces the inside of the main body connecting tube and is provided with a second slit, at least a portion of the first slit and at least a portion of the second slit form a connecting slit that penetrates the elastic sealing sheet in the thickness direction of the elastic sealing sheet, for allowing the first long straight interventional consumable to pass through the elastic sealing sheet, while tightly fitting the first long straight interventional consumable to prevent fluid from flowing out.

[0019] Advantageously, the first slit is one of a cross-shaped slit, a straight-line slit and a Y-shaped slit, and the second slit is a straight-line slit.

[0020] Advantageously, the second surface of the elastic sealing sheet is provided with a conical surface protruding toward the interior of the main body connecting pipe.

[0021] Advantageously, the multi-way valve also includes a sealing top cap provided with an opening and an annular boss surrounding the opening, and the sealing top cap is fixedly connected to the sealing end of the sealing push-pull tube so that the opening exposes the first slit of the elastic sealing sheet, and the edge of the elastic sealing sheet is clamped between the annular boss and the sealing end.

[0022] Advantageously, the multi-way valve further comprises a rotating joint, which is connected to the connecting end of the main body connecting pipe and is used to fix the second long straight intervening consumable and drive the second long straight intervening consumable to rotate.

[0023] The connecting end of the main body connecting tube has a limiting tube portion with an increased outer diameter, and the rotating joint includes a base rotating body, a sealing ring and a sealing gland, one end of the base rotating body forms a Luer female connector, and the other end is sleeved on the limiting tube portion, the sealing ring is clamped between the base rotating body and the top end of the limiting tube portion, and the sealing gland is sleeved on the limiting tube portion from the side of the limiting tube portion opposite to the top end and is threadedly connected to the base rotating body to axially fix the base rotating body on the limiting tube portion.

[0024] The utility model adopts a sealed push-pull tube with a sealing end and an exhaust end in the multi-way valve for interventional surgery, wherein the sealing end is provided with a sealing member for maintaining sealing, and the exhaust end can shield the exhaust port in a first position and connect the exhaust port with the main body connecting pipe in a second position. Through the above structure, the sealing function is decoupled from the exhaust function, and the exhaust operation can be performed by a simple push-pull action, thereby simplifying the use of the multi-way valve and improving the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0026] Figure 1 It is a schematic overall cross-sectional view of an example of a multi-way valve according to an embodiment of the utility model, showing the use state of the multi-way valve;

[0027] Figure 2 for Figure 1 A schematic perspective view of the multi-way valve shown;

[0028] Figure 3 for Figure 1 An exploded view of the parts of the multi-port valve shown;

[0029] Figure 4 and Figure 5 for Figure 1 Schematic cross-sectional views of the multi-way valve shown, showing the sealed push-pull tube in a first position and a second position respectively;

[0030] Figure 6 is a schematic partial cross-sectional view of another example of a multi-way valve according to an embodiment of the utility model;

[0031] Figure 7 is a schematic three-dimensional diagram of an elastic sealing sheet that can be used for a multi-way valve according to an embodiment of the utility model;

[0032] Figure 8 Two examples of resilient sealing sheets are shown;

[0033] Fig. 9 Shows Figure 7 A modified example of the elastic sealing sheet shown;

[0034] Fig.10 It is a schematic stereoscopic view of a sealing top cap that can be used for a multi-way valve according to an embodiment of the utility model. DETAILED DESCRIPTION

[0035] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the invention. For ease of description, only the parts related to the invention are shown in the accompanying drawings. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict.

[0036] First of all, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, in the description of this application, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0037] In addition, it should be noted that in the description of the present application, terms such as "upper", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the structure must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0038] Figure 1 It is a schematic overall cross-sectional view of an example of a multi-way valve according to an embodiment of the utility model, showing the use state of the multi-way valve; Figure 2 for Figure 1 A schematic perspective view of the multi-way valve shown; Figure 3 for Figure 1 Exploded view of the parts of a multi-port valve shown.

[0039] like Figures 1 to 3 As shown, the multi-way valve V according to the embodiment of the utility model comprises a main connecting pipe 1, a branch pipe 2 and a sealing push-pull pipe 3. Figure 1 As shown more clearly in the figure, the main connecting pipe 1 of the multi-way valve V has an entry end 11 and a connection end 12. The entry end 11 is used for allowing the first long straight interventional consumable c1 to enter, and the connection end 12 is used to connect the second long straight interventional consumable c2. The first long straight interventional consumable c1 can be inserted into the second long straight interventional consumable c2.

[0040] Here, long straight interventional consumables refer to consumables for intervention in the human body, such as catheters, guidewires, and stents. Such long straight interventional consumables are usually discarded after one-time use. The first long straight interventional consumable c1 used in combination with the multi-way valve according to the embodiment of the utility model can be, for example, a guidewire or a stent; the second long straight interventional consumable c2 can receive the first long straight interventional consumable c1, for example, a catheter. Figure 1 As shown, the first long straight interventional consumable c1 enters the main body connecting tube 1 from the entry end 11 of the main body connecting tube 1, extends from the connection end 12, and is thereby inserted into the second long straight interventional consumable c2. For example, the first long straight interventional consumable c1 is a guide wire, and the second long straight interventional consumable c2 is a catheter. In an interventional surgery, the catheter is generally fixed to the connection end 12 of the multi-way valve V before the guide wire penetrates the multi-way valve.

[0041] The branch pipe 2 of the multi-way valve V is arranged on the side wall of the main body connecting pipe 1, and is used to inject the medical liquid into the main body connecting pipe 1. The branch pipe 2 can be integrally formed with the main body connecting pipe 1 by, for example, injection molding, or can be formed separately from the main body connecting pipe 1 and sealed together by an appropriate method. In addition, as an example only and not a limitation, the branch pipe 2 can have, for example, a Luer male connector.

[0042] According to the needs of the operation performed by the multi-way valve V, different medical liquids can be injected into the main connecting tube 1 through the branch tube 2. For example, the injected medical liquid can be physiological saline, contrast agent or heparin.

[0043] According to the embodiment of the utility model, the side wall of the inlet end 11 of the main connecting pipe 1 is provided with an exhaust port 1a (see Figure 1 The sealing push-pull tube 3 cooperates with the main body connecting tube 1 to cover or open the exhaust port 1a, thereby realizing the exhaust of the multi-way valve V.

[0044] Specifically, Figure 3 As shown more clearly in FIG. 3 , the sealed push-pull tube 3 has a sealing end 31 and an exhaust end 32. Figure 1 It can be seen that the sealing end 31 is provided with a sealing member 4, and the exhaust end 32 is inserted into and sealedly connected to the inlet end 11 of the main connecting pipe 1, wherein the sealing member 4 is used for allowing the first long straight interventional consumable c1 to pass through and maintain a sealed fit therewith.

[0045] According to the embodiment of the utility model, the sealing push-pull tube 3 can move between a first position and a second position along the axial direction relative to the entry end 11 of the main body connecting tube 1 . Figure 4 and Figure 5 for Figure 1 The schematic cross-sectional view of the multi-way valve shown in FIG. 1 shows the sealed push-pull tube in the first position and the second position, respectively. Figure 4 As shown, in the first position, the exhaust end 32 of the sealing push-pull pipe 3 shields the exhaust port 1a, so that the exhaust port 1a is not connected with the main body connecting pipe 1, thereby achieving sealing. Figure 5 As shown, in the second position, the exhaust end 32 avoids the exhaust port 1a, so that the exhaust port 1a is connected with the main body connecting pipe 1, thereby allowing the gas in the main body connecting pipe 1 to be discharged through the exhaust port 1a to achieve exhaust.

[0046] During use, the operator manually pushes and pulls the sealing push-pull tube 3 so that the exhaust end 32 is in the first position or the second position relative to the inlet end 11 of the main connecting tube 1, that is, the exhaust port 1a and the inside of the main connecting tube 1 can be controlled to be open and closed.

[0047] Specifically, refer to Figure 4When the multi-way valve V of the utility model is used, the medical liquid can be injected from the branch pipe 2 into the main connecting pipe 1 (refer to Figure 4 The injection direction D), the liquid will Figure 4 As shown by the dotted arrow, the air in the main connecting tube 1 is gradually squeezed toward the inlet end 11 and the connecting end 12. The connecting end 12 is connected to the outside, and the injected liquid will squeeze a part of the air out from the connecting end 12 of the main connecting tube 1. Another part of the air is squeezed to the inlet end 11, and at this time the sealed push-pull tube 3 is in the second position, and the air at the inlet end 11 will be squeezed by the liquid to the outside of the main connecting tube 1 from the exhaust port 1a. After the exhaust is completed, the sealed push-pull tube 3 is pushed to the first position to cover the exhaust port 1a. Optionally, the connecting end 12 can be blocked after the liquid fills the connecting end 12, so that the gas in the multi-way valve V is squeezed to the inlet end 11, and then the activity of the sealed push-pull tube 3 is controlled to exhaust.

[0048] It can be seen that in the multi-way valve for interventional surgery of the embodiment of the utility model, the sealing push-pull tube 3 has a sealing end 31 and an exhaust end 32, wherein the sealing end 31 can be provided with a sealing member 4 for maintaining sealing, and the exhaust end 32 can be flexibly matched with the inlet end 11 of the main body connecting tube 1 under the push-pull operation of the operator to control the exhaust of the gas in the main body connecting tube 1. Through the above structure, the sealing function is decoupled from the exhaust function, and the exhaust operation is allowed to be performed through a simple push-pull action, thereby simplifying the use of the multi-way valve V and improving the safety of the operation.

[0049] exist Figures 1 to 5 In the example shown, the exhaust end 32 of the sealed push-pull tube 3 may have a straight tube shape that matches the inner diameter of the main body connecting tube 2 .

[0050] Advantageously, if Figure 4 and Figure 5 As shown, the inlet end 11 of the main connecting pipe 1 may be formed with an inner conical surface 11a that gradually expands from the inside to the outside along the axial direction; the sealing push-pull pipe 3 may also include a middle section 33 located between the sealing end 31 and the exhaust end 32, and the middle section 33 has an outer conical surface 33a that gradually expands from the exhaust end 32 to the sealing end 31. Figure 4 As shown, when the sealing push-pull tube 3 is in the first position, the outer conical surface 33a abuts against the inner conical surface 11a. Figure 5 As shown, when the sealed push-pull tube 3 is in the second position, the outer conical surface 33a is separated from the inner conical surface 11a, but at least part of the straight tube shape of the exhaust end 32 is still sealed to fit the inner diameter of the main connecting tube 1. In addition, optionally, the outer diameter of the sealing end 31 is set to be larger than the outer diameter of the exhaust end 32, which can facilitate the user to manipulate the sealing end 31, thereby controlling the movement of the sealed push-pull tube 3.

[0051] like Figure 4 and Figure 5As shown, the main body connecting pipe 1 may also include an exhaust pipe 1b extending outward from the exhaust port 1a. By providing the exhaust pipe 1b, the liquid flowing out of the exhaust port 1a during the exhaust process will not contaminate the inlet end 11, thereby reducing the risk of infection during the operation.

[0052] Alternatively, if Figures 3 to 5 As shown, the sealed push-pull tube 3 may also include a limiting portion 3i disposed on one side of the exhaust end 32. The limiting portion 3i is used to tightly / interference fit with the inner cavity of the main connecting tube 1 when the sealed push-pull tube 3 is in the first position, so as to fix the sealed push-pull tube 3. This is conducive to preventing the sealed push-pull tube 3 from moving between the first position and the second position due to external interference forces, which may bring danger to the operation. The diameter and axial length of the limiting portion 3i can be determined by performing a certain number of simulation experiments to obtain a better friction force for fixing the sealed push-pull tube 3. It should be understood that the fixing function of the limiting portion 3i can also be achieved by the exhaust end 32, so there is no need to set the limiting portion 3i.

[0053] Advantageously, the branch pipe 2 can be connected to the main connecting pipe 1 near the connecting end 12. This can alleviate the impact force of the injected medical liquid when it reaches the sealing end 31, avoid the liquid from forming bubbles at the sealing end 31, and thus achieve a better exhaust effect.

[0054] Figure 6 FIG. 1 is a schematic partial cross-sectional view of another example of a multi-way valve according to an embodiment of the present utility model, showing the structure and coordination of the inlet end 11' of the main body connecting pipe 1' and the exhaust end 32' of the sealing push-pull pipe 3' in this example. Although not shown in the figure, Figure 6 The multi-way valve in the example shown has a Figures 1 to 5 The multi-way valve V introduced is basically the same structure, the difference is Figure 6 The structure shown.

[0055] Specifically, if Figure 6 In the example shown, the inlet end 11' of the main connecting pipe 1' is formed with a tapered hole portion 11a' and a straight hole portion 11b', the tapered hole portion 11a' gradually expands from the inside to the outside along the axial direction of the main connecting pipe 1', the straight hole portion 11b' extends outward from the tapered hole portion 11a', and the exhaust port 1a' is arranged on the side wall of the tapered hole portion 11a'; and the exhaust end 32' of the sealed push-pull pipe 3' includes a straight pipe portion 32a' and a tapered portion 32b' whose outer diameter gradually decreases from the straight pipe portion 32a' to the end, and the straight pipe portion 32a' is sealed and fitted in the straight hole portion 11b' of the inlet end 11. Figure 6 As shown in the middle figure (a), when the sealing push-pull tube 3 is in the first position, the tapered portion 32b' abuts against and fits the tapered hole portion 11a' to shield the exhaust port 1a'; Figure 6As shown in the middle figure (b), when the sealing push-pull tube 3 is located at the second position, the tapered portion 32b' is out of contact with the tapered hole portion 11a' so that the exhaust port 1a' is connected with the main body connecting tube 1.

[0056] Advantageously, Figure 6 In the example shown, the straight tube portion 32a' of the sealed push-pull tube 3' and the straight hole portion 11b' of the entry end 11' can form a sealed and tight fit, thereby achieving a seal between the tube walls of the two and achieving a stable connection between the sealed push-pull tube 3' and the main connecting tube 1', thereby preventing the sealed push-pull tube 3' from being changed in position by interference forces.

[0057] As an alternative or in addition, Figure 6 In the example shown, a sealing elastic pad may be provided on the end face of the straight tube portion 32a' of the sealing push-pull tube 3' or on the surface of the straight hole portion 11b' opposite to the end face, for providing a seal between the end face and the surface of the straight hole portion 11b' when squeezed between the end face and the surface.

[0058] Furthermore, it should be understood that although Figure 6 Not shown, with reference to above Figures 1 to 5 The sealing push-pull tube 3 in the multi-way valve described above is the same, and the sealing push-pull tube 3' further includes a sealing end (not shown), and the sealing end is provided with a sealing member, which will not be described in detail here.

[0059] It should be understood that although the main connecting pipe in the multi-way valve shown in the drawings only includes a single entry end, according to the actual needs of the operation, the multi-way valve V according to the embodiment of the utility model can be provided with multiple entry ends and corresponding multiple sealing push-pull tubes.

[0060] Return to Reference Figure 3 , Figure 4 and Figure 5 Advantageously, the sealing member 4 of the multi-way valve V according to the embodiment of the utility model may include an elastic sealing sheet 41 . Figure 7 Schematic stereogram of such an elastic sealing sheet. The elastic sealing sheet 41 has a first surface 41-1 facing the outside of the main body connecting pipe 1 and a second surface 41-2 facing the inside of the main body connecting pipe 1. Figure 7 As shown in Figures (a) and (b), the first surface 41-1 of the elastic sealing sheet 41 is provided with a first slit 41a, and the second surface 41-2 is provided with a second slit 41b.

[0061] Optionally, the first slit 41a of the elastic sealing sheet 41 may include a plurality of radial slits arranged in rotational symmetry. Preferably, the first slit 41a is one of a cross-shaped slit, a straight-line slit and a Y-shaped slit, and the second slit 41b is a straight-line slit. For ease of understanding, Figure 8 Two examples of elastic sealing sheets 41 are shown. Figure 8 In the example shown in FIG. 1 (a), the first slit 41a of the elastic sealing sheet 41 is a cross-shaped slit, and the second slit 41b is a straight-line slit. Figure 8 In the example shown in FIG. (b), the first slit 41a' of the elastic sealing sheet 41' is a straight slit, the second slit 41b' is a straight slit, and the length of the first slit 41a' is greater than the length of the second slit 41b'.

[0062] like Figure 8 As schematically shown in FIG. 1 , according to an embodiment of the present invention, at least a portion of the first slit 41a and at least a portion of the second slit 41b are formed as a connecting slit that penetrates the elastic sealing sheet 41 in the thickness direction. For example, Figure 8 In both examples shown, a straight-line connecting slit is formed. The connecting slit is used to supply the guide wire c1 (see Figure 1 ) passes through the elastic sealing sheet 41, and at the same time, closely fits the guide wire c1 to prevent the fluid from flowing out. Specifically, when the elastic sealing sheet 41 is in a natural state, the connecting slit is tightly closed to achieve sealing of the sealing end 31; when the guide wire c1 passes through the elastic sealing sheet 41, the connecting slit is deformed by external force to allow the guide wire c1 to pass through, and at the same time, the connecting slit is closely fitted to the guide wire c1, preventing the fluid from flowing out of the connecting slit, thereby maintaining the sealing of the sealing end 31.

[0063] The shapes, sizes and numbers of the first slits and the second slits in the above examples are only for illustration, as long as the connecting slits provided on the elastic sealing sheet provide moderate resistance when the long straight interventional consumable is inserted and the seal is maintained.

[0064] Optionally, the elastic sealing sheet 41 may be a sealing gasket made of materials such as rubber, silicone, etc. that are harmless or less harmful to the human body.

[0065] It should be understood that, although the elastic sealing sheet 41 shown in the drawings is composed of only a single elastic sheet, the elastic sealing sheet 41 may also be composed of two or more elastic sheets according to actual process requirements. For example, one elastic sheet is provided with a straight-line connecting slit, and the other elastic sheet is provided with a cross-shaped connecting slit, and the two elastic sheets are stacked to obtain an elastic sealing sheet 41 having a cross-shaped slit on one side and a straight-line slit on the other side.

[0066] Fig. 9 Shows Figure 7 A modified example of the elastic sealing sheet shown in FIG. 4 is a modified example of the elastic sealing sheet, wherein the second surface 41-2 of the elastic sealing sheet 41 may be provided with a convex conical surface 41-2a. Fig. 9The side view of such an elastic sealing sheet is schematically shown, and the conical surface 41-2a faces the inside of the main connecting tube 1. Optionally, the conical surface 41-2a can have a taper of 1:1 to 5:1. By providing a convex conical surface 41-2a, the medical liquid injected into the multi-way valve V can squeeze the conical surface 41-2a, so that the slit on the conical surface 41-2a is more tightly closed, or fits the guide wire c1 inserted into the slit, thereby further improving the sealing performance of the elastic sealing sheet 41.

[0067] It should be understood that Fig. 9 The tapered surface 41 - 2 a shown is only schematic, and only constitutes a portion of the second surface 41 - 2 ; in other examples, the second surface 41 - 2 may be formed as a convex tapered surface 41 - 2 a as a whole.

[0068] Optionally, the sealing member 4 of the multi-way valve V according to the embodiment of the utility model may further include a sealing top cap 42 for fixing the elastic sealing sheet 41 to the sealing end 31 of the sealing push-pull tube 3. Fig.10 As shown, the sealing top cap 42 may be provided with an opening 42a and an annular boss 42b surrounding the opening 42a. Figure 3 , Figure 4 , the sealing top cap 42 is fixedly connected to the sealing end 31 of the sealing push-pull tube 3, so that the opening 42a exposes the first slit 41a of the elastic sealing sheet 41, and the edge of the elastic sealing sheet 41 is clamped between the annular boss 42b and the sealing end 31. By using the annular boss 42b to press the edge of the elastic sealing sheet 41, not only can the elastic sealing sheet 41 be fixed, but also the sealing performance of the elastic sealing sheet 41 can be improved. In addition, the elastic sealing sheet 41 can be fixedly connected to the sealing end 31 of the sealing push-pull tube 3 by bonding or other fixing methods.

[0069] Advantageously, the multi-way valve V according to the embodiment of the utility model may further include a rotating joint 5, which is connected to the connecting end 12 of the main connecting pipe 1 and is used to fix a second long straight intervention consumable c2 such as a catheter (see Figure 1 ) and drives the second long straight intervening consumable c2 to rotate. Return to reference Figure 4 The connecting end 12 of the main connecting pipe 1 has a limiting pipe portion 12a with an increased outer diameter, and the rotating joint 5 is connected to the limiting pipe portion 12a of the main connecting pipe 1. Specifically, the rotating joint 5 includes a base rotating body 51, a sealing ring 52 and a sealing gland 53 (see Figure 3 One end of the base rotating body 51 forms a Luer female connector 51a for fixing the catheter c2 and driving the catheter c2 to rotate (see Figure 1 ), the other end is sleeved on the limiting tube portion 12a; the sealing ring 52 is clamped between the base rotating body 51 and the top of the limiting tube portion 12a (see Figure 3); and the sealing gland 53 is sleeved on the limiting tube portion 12a from the side opposite to the top end thereof and is threadedly connected to the base rotating body 51 to axially fix the base rotating body 51 on the limiting tube portion 12a (see Figure 4 ).

[0070] Optionally, in order to facilitate the control of the catheter c2 to perform rotational movement, the rotary joint 5 may further include a gear for cooperating with an external power device to realize the rotation control of the rotary joint 5.

[0071] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A multi-way valve for interventional surgery, characterized in that: The multi-way valve comprises: A main body connecting pipe, the main body connecting pipe having an entry end for a first long straight interventional consumable to enter and a connection end for connecting a second long straight interventional consumable, the first long straight interventional consumable being able to pass through the second long straight interventional consumable, and a side wall of the entry end being provided with an exhaust port; a branch pipe, the branch pipe being arranged on a side wall of the main body connecting pipe and being used for injecting liquid into the main body connecting pipe; and A sealed push-pull tube, the sealed push-pull tube having a sealing end and an exhaust end, the sealed end being provided with a sealing member for a first long straight insertion consumable to pass through and maintain a sealed fit therewith, the exhaust end being inserted into and sealingly connected to the entry end of the main body connecting tube, and the sealed push-pull tube being able to move axially between a first position and a second position relative to the entry end, wherein: in the first position, the exhaust end shields the exhaust port so that it is not connected to the main body connecting tube, and in the second position, the exhaust end avoids the exhaust port so that it is connected to the main body connecting tube.

2. The multi-way valve according to claim 1, characterized in that: The inlet end of the main body connecting pipe is formed with an inner conical surface which gradually expands from the inside to the outside along the axial direction, and The sealed push-pull tube also includes a middle section located between the sealing end and the exhaust end, the outer diameter of the sealing end is larger than the outer diameter of the exhaust end, and the middle section has an outer conical surface that gradually expands from the exhaust end to the sealing end. When the sealed push-pull tube is located in the first position, the outer conical surface abuts against the inner conical surface.

3. The multi-way valve according to claim 1, characterized in that: The inlet end of the main body connecting pipe is formed with a tapered hole portion that gradually expands from the inside to the outside along the axial direction and a straight hole portion that extends outward from the tapered hole portion, and the exhaust port is arranged on the side wall of the tapered hole portion; and The exhaust end of the sealed push-pull pipe includes a straight pipe portion and a tapered portion whose outer diameter gradually decreases from the straight pipe portion to the end, and the straight pipe portion is sealedly fitted in the straight hole portion. When the sealed push-pull tube is located at the first position, the conical portion abuts against and fits the tapered hole portion to shield the exhaust port; when the sealed push-pull tube is located at the second position, the conical portion is disengaged from the tapered hole portion to allow the exhaust port to communicate with the main body connecting tube.

4. The multi-way valve according to any one of claims 1 to 3, characterized in that: The main body connecting pipe also includes an exhaust pipe extending outward from the exhaust port.

5. The multi-way valve according to any one of claims 1 to 3, characterized in that: The branch pipe is communicated with the main body communicating pipe at a position close to the connecting end.

6. The multi-way valve according to any one of claims 1 to 3, characterized in that: The sealing member includes an elastic sealing sheet having a first surface and a second surface, wherein the first surface faces the outside of the main connecting tube and is provided with a first slit, and the second surface faces the inside of the main connecting tube and is provided with a second slit, and at least a portion of the first slit and at least a portion of the second slit are formed as a connecting slit that penetrates the elastic sealing sheet in the thickness direction of the elastic sealing sheet, so as to allow the first long straight intervention consumable to pass through the elastic sealing sheet, while tightly fitting the first long straight intervention consumable to prevent fluid from flowing out.

7. The multi-way valve according to claim 6, characterized in that: The first slit is one of a cross-shaped slit, a straight-line slit and a Y-shaped slit, and the second slit is a straight-line slit.

8. The multi-way valve according to claim 6, characterized in that: The second surface of the elastic sealing sheet is provided with a tapered surface protruding toward the interior of the main body connecting pipe.

9. The multi-way valve according to claim 7, characterized in that: The seal also includes a sealing top cap provided with an opening and an annular boss surrounding the opening, and the sealing top cap is fixedly connected to the sealing end of the sealing push-pull tube so that the opening exposes the first slit of the elastic sealing sheet, and the edge of the elastic sealing sheet is clamped between the annular boss and the sealing end.

10. The multi-way valve according to any one of claims 1 to 3, characterized in that: The multi-way valve further includes a rotating joint, which is connected to the connecting end of the main body connecting pipe and is used to fix the second long straight intervening consumable and drive the second long straight intervening consumable to rotate. The connecting end of the main body connecting tube has a limiting tube portion with an increased outer diameter, and the rotating joint includes a base rotating body, a sealing ring and a sealing gland, one end of the base rotating body forms a Luer female connector, and the other end is sleeved on the limiting tube portion, the sealing ring is clamped between the base rotating body and the top end of the limiting tube portion, and the sealing gland is sleeved on the limiting tube portion from the side of the limiting tube portion opposite to the top end and is threadedly connected to the base rotating body to axially fix the base rotating body on the limiting tube portion.

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