CN222286222U - Multi-way valve for interventional procedures - Google Patents

Abstract

The utility model discloses a multi-way valve for interventional operation, which comprises a main body communicating pipe, a branch pipe and a sealing push-pull pipe, wherein the main body communicating pipe is provided with an inlet end for allowing a first long straight interventional consumable to enter and a connecting end for connecting a second long straight interventional consumable, the side wall of the inlet end is provided with an exhaust port, the branch pipe is arranged on the side wall of the main body communicating pipe and is 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, the sealing end is provided with a sealing element for allowing the first long straight interventional consumable to pass through and keep sealing fit with the sealing end, the exhaust end is inserted into and connected with 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 along the axial direction relative to the inlet end, wherein the exhaust port is shielded by the first position, and the exhaust end is prevented from the exhaust port by the second position. The utility model provides the sealing push-pull tube which is movably matched with the inlet end and is provided with the sealing end and the exhaust end, 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

Multi-way valve for interventional procedures

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a multi-way valve for interventional operation.

Background

The interventional therapy is a minimally invasive therapy, and precise long and straight interventional consumables such as a catheter, a guide wire and the like are introduced into a human body under the assistance of medical imaging equipment, so that diagnosis and local treatment on in-vivo pathological conditions are performed in a remote control mode.

The multi-way valve (e.g., Y valve or T valve) is a medical auxiliary device commonly used in interventional surgery, and is mainly used for assisting in introducing liquid such as contrast agent or physiological saline and matching with interventional consumables such as guide wires or catheters to enter a human body, and plays roles of sealing, preventing blood backflow and fixing the guide wires in interventional surgery. After the multi-way valve is filled with liquid such as physiological saline and the like, before the guide wire is guided into a human body, the air in the multi-way valve needs to be discharged by utilizing the liquid pressure so as to avoid the danger caused by air embolism generated when the air enters the human body.

In the existing multi-way valve, a sealing plug rotating head is adopted to press and connect a sealing rubber plug and a sealing pressing sheet to one end of a multi-way valve main body, and the sealing plug rotating head is manually rotated to control the closing and opening of a channel leading into the multi-way valve main body. For example, by rotating the sealing plug rotating head to a proper position, not only can long straight insertion consumables (such as guide wires and guide pipes) and the like be allowed to pass through the sealing plug rotating head, the sealing pressing sheet, the sealing rubber plug and the like to smoothly enter the multi-way valve, but also the purpose of preventing blood backflow can be achieved. In addition, by unscrewing the plug swivel, venting can be performed.

However, such multi-way valves have disadvantages. In particular, the manual rotation operation is complicated and is prone to error. For example, a doctor may forget to turn on or off a knob during a procedure, which presents a significant safety hazard to medical work. For another example, it is difficult to accurately rotate the plug swivel to the proper position to achieve the desired effect.

Disclosure of utility model

It is an object of the present utility model to provide a multi-way valve for interventional procedures that at least partially overcomes the deficiencies of the prior art.

According to an embodiment of the present utility model, there is provided a multi-way valve for interventional procedures, the multi-way valve comprising:

The main body communicating pipe is provided with an inlet end for the first long straight intervention consumable material to enter and a connecting end for connecting the second long straight intervention consumable material, the first long straight intervention consumable material can be arranged in the second long straight intervention consumable material in a penetrating mode, and the side wall of the inlet end is provided with an exhaust port;

A branch pipe provided on a side wall of the main communicating pipe for injecting liquid into the main communicating pipe, and

The sealing push-pull tube is provided with a sealing end and an exhaust end, the sealing end is provided with a sealing piece for the first long straight insertion consumable to pass through and keep sealing fit with, the exhaust end is inserted into and connected with the inlet end of the main communicating pipe in a sealing mode, the sealing push-pull tube can move relative to the inlet end along the axial direction between a first position and a second position, the exhaust end covers the exhaust port to be not communicated with the main communicating pipe, and the exhaust end avoids the exhaust port to be communicated with the main communicating pipe in the first position.

Advantageously, the inlet end of the main body communication tube is formed with an inner conical surface gradually expanding from inside to outside in the axial direction, and

The seal push-pull tube further includes an intermediate section between the seal end and the exhaust end, the seal end having an outer diameter greater than the exhaust end, the intermediate section having an outer tapered surface that gradually expands from the exhaust end toward the seal end, the outer tapered surface abutting the inner tapered surface when the seal push-pull tube is in the first position.

In some embodiments, the inlet end of the main body communication pipe is formed with a tapered hole portion gradually expanding from inside to outside along the axial direction and a straight hole portion extending from the tapered hole portion to outside, the air outlet is provided on the side wall of the tapered hole portion, and

The exhaust end of the sealing push-pull tube comprises a straight tube part and a conical part with the outer diameter gradually reduced from the straight tube part to the tail end, the straight tube part is in sealing fit in the straight hole part,

When the sealing push-pull pipe is positioned at the second position, the conical part is out of contact with the conical hole part so as to enable the air outlet to be communicated with the main communicating pipe.

Advantageously, the body communication tube further comprises an exhaust tube extending outwardly from the exhaust port.

Advantageously, the branch pipe communicates with the main body communication pipe at a position close to the connection end.

Advantageously, the sealing member includes an elastic sealing sheet having a first face facing the outside of the main body communication tube and provided with a first slit, and a second face facing the inside of the main body communication tube and provided with a second slit, at least a portion of the first slit and at least a portion of the second slit being formed to penetrate the elastic sealing sheet in a thickness direction of the elastic sealing sheet, for the first long straight insertion consumable to penetrate the elastic sealing sheet while being closely fitted to the first long straight insertion consumable to block fluid outflow.

Advantageously, the first slit is one of a cross slit, a straight slit and a Y slit, and the second slit is a straight slit.

Advantageously, the second face of the elastic sealing piece is provided with a conical surface protruding towards the inside of the body communication tube.

Advantageously, the multi-way valve further comprises a sealing top cap provided with an opening and an annular boss surrounding the opening, the sealing top cap being fixedly connected to the sealing end of the sealing push-pull tube such that the opening exposes the first slit of the resilient sealing sheet and an edge of the resilient sealing sheet is clamped between the annular boss and the sealing end.

Advantageously, the multi-way valve further comprises a rotary joint connected to the connection end of the main body communication pipe, a rotary joint for fixing the second long straight intervention consumable and driving the second long straight intervention consumable to rotate,

The connecting end of the main communicating pipe is provided with a limiting pipe part with an increased outer diameter, the rotary joint comprises a base rotary body, a sealing ring and a sealing gland, one end of the base rotary body is provided with a luer female joint, the other end of the base rotary body is sleeved on the limiting pipe part, the sealing ring is clamped between the base rotary body and the top end of the limiting pipe part, and the sealing gland is sleeved on the limiting pipe part from one side of the limiting pipe part opposite to the top end and is in threaded connection with the base rotary body so as to axially fix the base rotary body on the limiting pipe part.

The multi-way valve for interventional operation adopts the sealing push-pull tube with the sealing end and the exhaust end, wherein the sealing end is provided with a sealing element for keeping sealing, and the exhaust end can shield the exhaust port at a first position and enable the exhaust port to be communicated with the main communicating tube at a second position. By the above structure, the sealing function is decoupled from the venting function and allows venting operation by a simple push-pull action, thereby simplifying the use of the multi-way valve and improving the safety of the operation.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings in which:

FIG. 1 is a schematic overall cross-sectional view of an example of a multi-way valve according to an embodiment of the present utility model, showing a state of use of the multi-way valve;

FIG. 2 is a schematic perspective view of the multi-way valve of FIG. 1;

FIG. 3 is an exploded view of the multi-way valve of FIG. 1;

FIGS. 4 and 5 are schematic cross-sectional views of the multi-way valve of FIG. 1, showing the seal push-pull tube in a first position and a second position, respectively;

FIG. 6 is a schematic partial cross-sectional view of another example of a multi-way valve according to an embodiment of the utility model;

FIG. 7 is a schematic perspective view of an elastomeric sealing panel that may be used in a multi-way valve according to an embodiment of the present utility model;

FIG. 8 shows two examples of elastomeric sealing sheets;

FIG. 9 shows a modification of the resilient sealing strip of FIG. 7;

Fig. 10 is a schematic perspective view of a sealing top cap that may be used with a multi-way valve according to an embodiment of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. For convenience of description, only parts related to the utility model are shown in the drawings. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that, in the description of the present application, unless explicitly specified and limited otherwise, the terms "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected or detachably connected, directly connected or indirectly connected through an intermediate medium, or may be communication between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art according to the specific circumstances. Furthermore, in the description of the present application, the terms "first," second, "and third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present application, terms "upper," "inner," "outer," and the like refer to directions or positional relationships based on directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the structures must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

Fig. 1 is a schematic overall sectional view of an example of a multi-way valve according to an embodiment of the present utility model, showing a use state of the multi-way valve, fig. 2 is a schematic perspective view of the multi-way valve shown in fig. 1, and fig. 3 is an exploded view of parts of the multi-way valve shown in fig. 1.

As shown in fig. 1 to 3, the multiway valve V according to the embodiment of the present utility model includes a main body communication pipe 1, a branch pipe 2, and a sealing push-pull pipe 3. As shown more clearly in fig. 1, the main body communication tube 1 of the multiway valve V has an inlet end 11 and a connection end 12, the inlet end 11 is used for the inlet of the first long straight insertion consumable c1, the connection end 12 is used for the connection of the second long straight insertion consumable c2, and the first long straight insertion consumable c1 can be inserted into the second long straight insertion consumable c 2.

Here, a long straight access consumable refers to a consumable that accesses the human body, such as a catheter, a guidewire, a stent, etc., and such a long straight access consumable is generally discarded after a single use. The first long straight intervention consumable c1 used in connection with the multi-way valve according to an embodiment of the present utility model may be, for example, a guide wire, a stent, and the second long straight intervention consumable c2 is capable of receiving the first long straight intervention consumable c1, for example, a catheter. As shown in fig. 1, the first long straight intervention consumable c1 enters the main body communication tube 1 from the inlet end 11 of the main body communication tube 1, and extends out from the connection end 12 so as to be inserted into the second long straight intervention consumable c 2. Taking the first long straight insertion consumable c1 as a guide wire and the second long straight insertion consumable c2 as a catheter, in the insertion operation, 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.

The branch pipe 2 of the multi-way valve V is provided on the side wall of the main communicating pipe 1 for injecting medical liquid into the main communicating pipe 1. The branch pipe 2 may be integrally formed with the main body communication pipe 1 by, for example, injection molding, or may be formed separately from the main body communication pipe 1 and hermetically connected together by an appropriate means. Further, by way of example only and not limitation, the branch pipe 2 may have the form of a luer male connector, for example.

Depending on the needs of the operation performed by the multi-way valve V, different medical fluids can be injected into the main body communication tube 1 through the branch tube 2. For example, the injected medical fluid may be saline, contrast media, heparin, or the like.

According to the embodiment of the utility model, the side wall of the inlet end 11 of the main communicating pipe 1 is provided with an exhaust port 1a (see fig. 1), and the sealing push-pull pipe 3 is movably matched with the main communicating pipe 1 to shield or open the exhaust port 1a, thereby realizing the exhaust of the multi-way valve V.

Specifically, as shown more clearly in fig. 3, the sealed push-pull tube 3 has a sealed end 31 and a venting end 32. Referring to fig. 1, it can be seen that sealing end 31 is provided with sealing member 4, and that venting end 32 is inserted into and sealingly connected to inlet end 11 of main body communication tube 1, wherein sealing member 4 is adapted to pass through and maintain sealing engagement with first long straight access consumable c 1.

According to the embodiment of the present utility model, the sealing push-pull tube 3 is movable between the first position and the second position in the axial direction with respect to the inlet end 11 of the body communication tube 1. Fig. 4 and 5 are schematic cross-sectional views of the multiway valve of fig. 1, showing the sealing push-pull tube in a first position and a second position, respectively. As shown in fig. 4, in the first position, the exhaust port 1a is shielded by the exhaust end 32 of the seal push-pull pipe 3, and the exhaust port 1a is not communicated with the main body communication pipe 1, thereby realizing sealing. As shown in fig. 5, in the second position, the exhaust port 32 is away from the exhaust port 1a, and the exhaust port 1a communicates with the main body communication tube 1, thereby allowing the gas in the main body communication tube 1 to be exhausted through the exhaust port 1a, and realizing the exhaust.

In use, an operator manually pushes and pulls the sealing push-pull tube 3 to enable the exhaust end 32 to be in the first position or the second position relative to the inlet end 11 of the main communicating tube 1, i.e. to be able to control the on-off of the exhaust port 1a and the inside of the main communicating tube 1.

Specifically, referring to fig. 4, in use, the multi-way valve V according to the embodiment of the present utility model may inject medical fluid from the branch pipe 2 into the main communicating pipe 1 (refer to the fluid injection direction D of fig. 4), and the fluid gradually presses the air in the main communicating pipe 1 toward the inlet end 11 and the connection end 12 as indicated by the dotted arrows in fig. 4. The connection end 12 communicates with the outside, and the injected liquid presses a part of air out of the connection end 12 of the body communication tube 1. Another part of the air is pressed to the inlet end 11, and at this time, the sealing push-pull tube 3 is placed at the second position, and the air at the inlet end 11 is pressed by the liquid from the air outlet 1a to the outside of the main communicating tube 1. After the exhaust is completed, the seal push-pull tube 3 is pushed to the first position to shield the exhaust port 1a. Alternatively, the connection end 12 can be blocked after the liquid fills the connection end 12, the gas of the multi-way valve V is extruded to the inlet end 11, and then the sealing push-pull tube 3 is controlled to move for exhausting.

It can be seen that in the multiway valve for interventional operation according to the embodiment of the present utility model, the sealing push-pull tube 3 has a sealing end 31 and an exhaust end 32, wherein the sealing end 31 may be provided with a sealing member 4 for maintaining sealing, and the exhaust end 32 is capable of being movably engaged with the inlet end 11 of the body communication tube 1 under a push-pull operation by an operator to control the exhaust of gas in the body communication tube 1. With the above structure, the sealing function is decoupled from the venting function and allows venting operation through a simple push-pull action, thereby simplifying the use of the multi-way valve V and improving the safety of the operation.

In the example shown in fig. 1 to 5, the exhaust end 32 of the seal push-pull tube 3 may have a straight tube shape fitted with the inner diameter of the body communication tube 2.

Advantageously, as shown in fig. 4 and 5, the inlet end 11 of the body communication tube 1 may be formed with an inner tapered surface 11a gradually expanding from inside to outside in the axial direction, and the sealing push-pull tube 3 may further include an intermediate section 33 between the sealing end 31 and the exhaust end 32, the intermediate section 33 having an outer tapered surface 33a gradually expanding from the exhaust end 32 toward the sealing end 31. As shown in fig. 4, when the sealing push-pull tube 3 is in the first position, the outer conical surface 33a abuts against the inner conical surface 11a. As shown in fig. 5, when the sealing push-pull tube 3 is in the second position, the outer tapered surface 33a is separated from the inner tapered surface 11a, but at least part of the straight pipe shape of the exhaust end 32 is still in sealing engagement with the inner diameter of the main body communication tube 1. In addition, optionally, the outer diameter of the sealing end 31 is larger than the outer diameter of the exhaust end 32, so that the user can conveniently control the sealing end 31, thereby controlling the movement of the sealing push-pull tube 3.

As shown in fig. 4 and 5, the body communication tube 1 may further include an exhaust pipe 1b extending outwardly from the exhaust port 1 a. By providing the exhaust tube 1b, the liquid flowing out of the exhaust port 1a during the exhaust process will not contaminate the inlet end 11, reducing the risk of infection during the operation.

Optionally, as shown in fig. 3 to 5, the sealing push-pull tube 3 may further include a limiting portion 3i disposed on one side of the exhaust end 32, where the limiting portion 3i is used for tightly/interference fit with the inner cavity of the main communicating tube 1 when the sealing push-pull tube 3 is located at the first position, so as to fix the sealing push-pull tube 3. This is advantageous in order to avoid the sealing push-pull tube 3 being moved between the first position and the second position by external interference forces, which may present a risk to the operation. The diameter and axial length of the limiting portion 3i can be determined by performing simulation experiments for a certain number of times, so as to obtain a better friction force for fixing the sealing push-pull tube 3. It should be understood that the fixing of the limiting portion 3i may also be performed by the exhaust end 32, so that the limiting portion 3i need not be provided.

Advantageously, the branch pipe 2 may communicate with the main body communication pipe 1 at a position near the connection end 12. Therefore, the impact force of the injected medical liquid when reaching the sealing end 31 can be relieved, and bubbles formed in the liquid at the sealing end 31 are avoided, so that a better air exhaust effect can be achieved.

Fig. 6 is a schematic partial cross-sectional view of another example of the multiway valve according to an embodiment of the present utility model, showing the structure and cooperation of the inlet end 11 'of the main body communication tube 1' and the exhaust end 32 'of the sealing push-pull tube 3' in this example. Although not shown in the drawings, the multi-way valve in the example shown in fig. 6 has substantially the same structure as the multi-way valve V described above in connection with fig. 1 to 5, except for the structure shown in fig. 6.

Specifically, as shown in the example of fig. 6, the inlet end 11' of the body communication tube 1' is formed with a tapered hole portion 11a ' and a straight hole portion 11b ', the tapered hole portion 11a ' gradually expanding from inside to outside in the axial direction of the body communication tube 1', the straight hole portion 11b ' extending from the tapered hole portion 11a ' to outside, the exhaust port 1a ' being provided on the side wall of the tapered hole portion 11a ', and the exhaust end 32' of the seal push-pull tube 3' includes a straight pipe portion 32a ' and a tapered portion 32b ' gradually narrowing in outer diameter from the straight pipe portion 32a ' to the tip end, the straight pipe portion 32a ' being sealingly fitted in the straight hole portion 11b ' of the inlet end 11. As shown in fig. 6 (a), when the sealing push-pull tube 3 is located at the first position, the tapered portion 32b 'abuts against and abuts against the tapered hole portion 11a' to shield the exhaust port 1a ', and as shown in fig. 6 (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 'to communicate the exhaust port 1a' with the main communicating tube 1.

Advantageously, in the example shown in fig. 6, the straight tube portion 32a ' of the sealing push-pull tube 3' and the straight hole portion 11b ' of the inlet end 11' can form a sealed and tight fit, thereby achieving sealing between the tube walls of the two and achieving stable connection of the sealing push-pull tube 3' and the main communicating tube 1', avoiding the sealing push-pull tube 3' from being repositioned by an interfering force.

Alternatively or additionally, in the example shown in fig. 6, a sealing elastic pad may be provided on a distal end face of the straight tube portion 32a 'of the seal push-pull tube 3' or a surface of the straight hole portion 11b 'opposite to the distal end face for providing a seal therebetween when pressed between the distal end face and the surface of the straight hole portion 11 b'.

Furthermore, it should be understood that although not shown in fig. 6, the sealing push-pull tube 3' further includes a sealing end (not shown) as the sealing push-pull tube 3 in the multi-way valve described above with reference to fig. 1 to 5, and the sealing end is provided with a sealing member, which is not described herein.

It should be understood that although the body communication tube in the multi-way valve shown in the drawings includes only a single access port, the multi-way valve V according to the embodiment of the present utility model may be provided with a plurality of access ports and a corresponding plurality of sealing push-pull tubes according to the actual operation needs.

Referring back to fig. 3, 4 and 5, advantageously, the seal 4 of the multiway valve V according to embodiments of the utility model can comprise an elastic sealing sheet 41. Fig. 7 is a schematic perspective view of such an elastic sealing sheet. The elastic sealing fin 41 has a first face 41-1 facing the outside of the body communication tube 1 and a second face 41-2 facing the inside of the body communication tube 1. As shown in fig. 7 (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.

Alternatively, the first slit 41a of the elastic sealing sheet 41 may include a number of radial slits arranged rotationally symmetrically. Preferably, the first slit 41a is one of a cross slit, a straight slit, and a Y slit, and the second slit 41b is a straight slit. For ease of understanding, fig. 8 shows two examples of the elastic sealing piece 41. In the example shown in the graph (a) of fig. 8, the first slit 41a of the elastic sealing sheet 41 is a cross-shaped slit, and the second slit 41b is a straight slit. In the example shown in the graph (b) of fig. 8, 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 '.

As schematically shown in fig. 8, according to an embodiment of the present utility model, at least a portion of the first slit 41a and at least a portion of the second slit 41b are formed as communication slits penetrating in the thickness direction of the elastic sealing sheet 41. For example, in both examples shown in fig. 8, a straight communication slit is formed. The communication slit is used for the guide wire c1 (see fig. 1) to pass through the elastic sealing piece 41 while closely fitting the guide wire c1 to block the outflow of fluid. Specifically, when the elastic sealing piece 41 is in a natural state, the communicating slit is tightly closed to seal the sealing end 31, and when the guide wire c1 penetrates into the elastic sealing piece 41, the communicating slit is deformed by external force to allow the guide wire c1 to penetrate, and meanwhile, the communicating slit is tightly attached to the guide wire c1 to block fluid from flowing out of the communicating slit, so that the sealing end 31 is sealed.

The shapes, sizes and numbers of the first slits and the second slits in the above examples are merely illustrative, as long as the communication slits provided on the elastic sealing sheet are made to have moderate resistance when penetrating into the long straight insertion consumable, and remain sealed.

Alternatively, the elastic sealing piece 41 may be a sealing gasket made of rubber, silicone, or the like, which is harmless or less harmful to the human body.

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 be composed of more than two elastic sheets according to actual process requirements. For example, one of the elastic sheets is provided with a straight communicating slit, the other elastic sheet is provided with a cross communicating slit, and the two elastic sheets are laminated to obtain an elastic sealing sheet 41 having a cross slit on one side and a straight slit on the other side.

Fig. 9 shows a modification of the elastic sealing plate shown in fig. 7 in which the second face 41-2 of the elastic sealing plate 41 may be provided with a convex tapered face 41-2a, and fig. 9 schematically shows a side view of such an elastic sealing plate, the tapered face 41-2a being directed toward the inside of the body communication tube 1. Alternatively, the taper surface 41-2a may have a taper of 1:1 to 5:1. By providing the protruding tapered surface 41-2a, the medical fluid injected into the multiway valve V can be made to press the tapered surface 41-2a so that the slit located on the tapered surface 41-2a is more tightly closed or fitted to the guide wire c1 penetrating the slit, thereby further improving the sealability of the elastic sealing sheet 41.

It should be understood that the tapered surface 41-2a shown in fig. 9 is merely illustrative and constitutes only a part of the second surface 41-2, and that the second surface 41-2 may be integrally formed as a convex tapered surface 41-2a in other examples.

Optionally, the seal 4 of the multi-way valve V according to an embodiment of the present utility model may further comprise a sealing top cap 42 for securing the elastic sealing piece 41 to the sealing end 31 of the sealing push-pull tube 3. Preferably, as shown in fig. 10, the sealing top cap 42 may be provided with an opening 42a and an annular boss 42b surrounding the opening 42 a. Referring to fig. 3 and 4 in combination, the seal top cap 42 is fixedly connected to the seal end 31 of the seal push-pull tube 3 such that the opening 42a exposes the first slit 41a of the elastic sealing piece 41, and the edge of the elastic sealing piece 41 is sandwiched between the annular boss 42b and the seal end 31. By pressing the edge of the elastic sealing piece 41 with the annular boss 42b, not only the elastic sealing piece 41 can be fixed, but also the sealability of the elastic sealing piece 41 can be improved. In addition, the resilient sealing strip 41 may be fixedly attached to the sealing end 31 of the sealing push-pull tube 3 by bonding or other fastening means.

Advantageously, the multi-way valve V according to the embodiment of the present utility model may further include a rotary joint 5, the rotary joint 5 being connected to the connection end 12 of the body communication tube 1 for fixing the second long straight intervention consumable c2 (see fig. 1) such as a catheter and rotating the second long straight intervention consumable c 2. Referring back to fig. 4, the connection end 12 of the main body communication tube 1 has a stopper tube portion 12a of increased outer diameter, and the rotary joint 5 is connected to the stopper tube portion 12a of the main body communication tube 1. Specifically, the rotary joint 5 includes a base rotary body 51, a seal ring 52, and a seal gland 53 (see fig. 3). One end of the base rotating body 51 is formed with a luer female connector 51a for fixing the conduit c2 and driving the conduit c2 to rotate (see fig. 1), the other end is sleeved on the limiting pipe portion 12a, the sealing ring 52 is clamped between the base rotating body 51 and the top end of the limiting pipe portion 12a (see fig. 3), and the sealing gland 53 is sleeved on the limiting pipe portion 12a from the side of the limiting pipe portion 12a opposite to the top end and is in threaded connection with the base rotating body 51 so as to axially fix the base rotating body 51 on the limiting pipe portion 12a (see fig. 4).

Optionally, in order to facilitate the control of the rotational movement of the conduit c2, the rotary joint 5 may further comprise gears for co-operating with external power means to effect a rotational control of the rotary joint 5.

The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims (10)

1. A multi-way valve for interventional procedures, the multi-way valve comprising:

The main body communicating pipe is provided with an inlet end for the first long straight intervention consumable material to enter and a connecting end for connecting the second long straight intervention consumable material, the first long straight intervention consumable material can be arranged in the second long straight intervention consumable material in a penetrating mode, and the side wall of the inlet end is provided with an exhaust port;

A branch pipe provided on a side wall of the main communicating pipe for injecting liquid into the main communicating pipe, and

The sealing push-pull tube is provided with a sealing end and an exhaust end, the sealing end is provided with a sealing piece for a first long direct insertion consumable to pass through and keep sealing fit with the sealing end, the exhaust end is inserted into and connected to the inlet end of the main communicating pipe in a sealing mode, the sealing push-pull tube can move relative to the inlet end along the axial direction between a first position and a second position, and in the first position, the exhaust end shields the exhaust port from being communicated with the main communicating pipe, and in the second position, the exhaust end shields the exhaust port from being communicated with the main communicating pipe.

2. The multiway valve according to claim 1, wherein the inlet end of the main communicating tube is formed with an inner conical surface gradually expanding from inside to outside in the axial direction, and

The seal push-pull tube further includes an intermediate section between the seal end and the exhaust end, the seal end having an outer diameter greater than the exhaust end, the intermediate section having an outer tapered surface that gradually expands from the exhaust end toward the seal end, the outer tapered surface abutting the inner tapered surface when the seal push-pull tube is in the first position.

3. The multiway valve according to claim 1, wherein the inlet end of the main communicating pipe is formed with a tapered hole portion gradually expanding from inside to outside in the axial direction and a straight hole portion extending from the tapered hole portion to outside, the exhaust port is provided on a side wall of the tapered hole portion, and

The exhaust end of the sealing push-pull tube comprises a straight tube part and a conical part with the outer diameter gradually reduced from the straight tube part to the tail end, the straight tube part is in sealing fit in the straight hole part,

When the sealing push-pull pipe is positioned at the second position, the conical part is out of contact with the conical hole part so as to enable the air outlet to be communicated with the main communicating pipe.

4. A multi-way valve as set forth in any one of claims 1 to 3 wherein said body communication tube further includes an exhaust tube extending outwardly from said exhaust port.

5. A multi-way valve as claimed in any one of claims 1 to 3 wherein said branch pipe communicates with said main body communication pipe at a location adjacent said connection end.

6. A multi-way valve as claimed in any one of claims 1 to 3, wherein the seal member comprises an elastic seal sheet having a first face and a second face, the first face facing the outside of the main body communication tube and provided with a first slit, the second face facing the inside of the main body communication tube and provided with a second slit, at least a part of the first slit and at least a part of the second slit being formed as a communication slit penetrating the elastic seal sheet in a thickness direction of the elastic seal sheet for the first long straight intervention consumable to pass through the elastic seal sheet while closely fitting the first long straight intervention consumable to block fluid outflow.

7. The multiway valve of claim 6, wherein the first slit is one of a cross slit, a straight slit, and a Y slit, and the second slit is a straight slit.

8. The multiway valve of claim 6, wherein the second face of the elastic sealing sheet is provided with a tapered face protruding toward the inside of the main communicating tube.

9. The multiway valve of claim 7, wherein the seal further comprises a sealing top cap provided with an opening and an annular boss surrounding the opening, the sealing top cap being fixedly connected to the sealing end of the sealing push-pull tube such that the opening exposes the first slit of the resilient sealing sheet and an edge of the resilient sealing sheet is clamped between the annular boss and the sealing end.

10. A multi-way valve as set forth in any one of claims 1 to 3 further comprising a rotary joint connected to said connection end of said main body communication pipe for fixing and rotating a second long straight intervention consumable,

The connecting end of the main communicating pipe is provided with a limiting pipe part with an increased outer diameter, the rotary joint comprises a base rotary body, a sealing ring and a sealing gland, one end of the base rotary body is provided with a luer female joint, the other end of the base rotary body is sleeved on the limiting pipe part, the sealing ring is clamped between the base rotary body and the top end of the limiting pipe part, and the sealing gland is sleeved on the limiting pipe part from one side of the limiting pipe part opposite to the top end and is in threaded connection with the base rotary body so as to axially fix the base rotary body on the limiting pipe part.