Novel liquid injection valve

Abstract

The novel liquid injection valve comprises a valve seat, an upper valve cavity and a lower valve cavity are formed in the valve seat, and a puncture opening is formed in the upper end of the upper valve cavity; the puncture film is arranged in the upper valve cavity and is in sealing fit with the puncture opening; one end of the connecting pipe is communicated with the lower valve cavity, the other end of the connecting pipe is suitable for being connected with an outer pipe, and an anti-slip convex ring is arranged on the connecting pipe; the locking sleeve is connected to the connecting pipe in a sleeving manner and slides between the anti-slip convex ring and the valve body; the rubber coating sleeve wraps the valve seat outside the upper valve cavity, and an opening used for avoiding the puncture film is formed in the upper end of the rubber coating sleeve; when the connecting pipe is sleeved with the outer pipe, the outer pipe is clamped between the locking sleeve and the connecting pipe, and the locking sleeve abuts against the anti-slip protruding ring so as to prevent the locking sleeve from sliding out of the connecting pipe. The novel liquid injection valve is innovatively designed, the soft rubber coating sleeve is adopted to wrap the valve seat, the size is small and exquisite, compared with a traditional infusion port, the novel liquid injection valve is smaller and lighter, the comfort of a patient can be greatly improved, an inner valve body can adopt a metal plastic coating puncture film through external plastic coating, and high pressure can be borne.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical equipment, concretely relates to a novel liquid injection valve. BACKGROUND

[0002] The liquid injection valve is an important component in medical devices for realizing material exchange (such as liquid, gas or drug delivery), and is widely used in medical scenarios that require long-term or frequent material exchange. Its main advantages include: it can greatly reduce the pain of puncture, avoid repeated puncture of peripheral veins, thereby reducing the pain of patients; there is no exposed part, which reduces the risk of local and systemic infection; it can be used for a long time, and the retention time is up to several years, which is suitable for patients who need long-term infusion; at the same time, patients can take a normal bath and swim during use, and it does not affect the appearance. With the continuous development of medical technology, the demand for repeated liquid injection in the body is increasing, especially in chronic disease management and critical care, the application of valve body that can perform long-term material exchange is particularly important. The common application scenario is for intravenous infusion devices (such as infusion ports) that require long-term chemotherapy.

[0003] The traditional infusion port has some limitations, such as large size, large incision required during implantation, and long recovery time. In addition, its external structure and size usually need to be implanted in a flat area, and for some special parts (such as armpits and inner thighs), a channel needs to be established and guided to other flat areas, which not only increases the pain of patients, but also increases the operation difficulty; secondly, the large size and hard shell of the traditional infusion port also make the patient feel strong foreign body sensation during implantation. When the liquid injection valve is connected to the outside, the outside adopts the extrusion mode of the locking sleeve, which is complex to operate, has a large operation range, and has the risk of falling off. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, provide a novel liquid injection valve, and solve the technical problems of the size of the previous liquid injection valve, complex operation, large trauma, and hard shell that causes the patient to feel strong foreign body sensation during implantation.

[0005] The technical scheme adopted by the utility model to solve its technical problems is:

[0006] A novel liquid injection valve is provided, comprising

[0007] A valve seat is provided, and an upper valve cavity and a lower valve cavity are formed in the valve seat, and a puncture port is formed at the upper end of the upper valve cavity;

[0008] A puncture membrane is arranged in the upper valve cavity and forms a sealing fit with the puncture port;

[0009] A connecting pipe is in communication with the lower valve cavity at one end and is adapted to be connected with an outer pipe at the other end, and a non-slip convex ring is arranged on the connecting pipe.

[0010] A locking sleeve is sleeved on the connecting pipe and slides between the anti-skid convex ring and the valve body;

[0011] A rubber sleeve is wrapped around the valve seat outside the upper valve cavity, and an opening is formed at the upper end of the rubber sleeve for avoiding the puncture film;

[0012] When the outer pipe is sleeved on the connecting pipe, the outer pipe is clamped between the locking sleeve and the connecting pipe, and the locking sleeve abuts against the anti-skid convex ring to limit the locking sleeve from sliding out of the connecting pipe.

[0013] Further, the valve seat comprises

[0014] The valve body, in which the upper valve cavity and the lower valve cavity are formed, has an inner diameter and an outer diameter larger than those of the lower valve cavity;

[0015] The riveting cylinder is sleeved outside the upper valve cavity, the lower riveting edge of the riveting cylinder is riveted to the lower end of the upper valve cavity, and the upper riveting edge of the riveting cylinder is riveted to the upper end of the upper valve cavity, while the upper riveting edge limits the upward movement of the puncture film;

[0016] The rubber sleeve is wrapped outside the riveting cylinder.

[0017] Further, the rubber sleeve comprises

[0018] The sleeve body is wrapped outside the riveting cylinder;

[0019] The suture end body is an integral structure with the sleeve body, and a plurality of suture holes are formed in the suture end body.

[0020] Further, the suture end body is located at the upper end of the sleeve body, and the upper end surface of the suture end body is flush with the upper end surface of the sleeve body.

[0021] Further, the suture end body is located at the lower end of the sleeve body, the suture end body has a ring structure, and the lower end surface of the suture end body forms a connecting surface for cooperating with the skin surface.

[0022] Further, the anti-skid convex ring has a tapered surface at both the inner end and the outer end;

[0023] The sleeve hole of the locking sleeve has a tapered hole at the front end.

[0024] Further, a plurality of observation holes are formed in the locking sleeve, and each observation hole is distributed circumferentially on the locking sleeve.

[0025] Further, the connecting pipe is connected to the lower valve cavity in an axial or radial manner.

[0026] Further, the connecting pipe is connected to the lower end of the lower valve cavity in an axial manner, and the connecting pipe is arranged eccentrically with respect to the axis of the lower valve cavity.

[0027] The utility model discloses the beneficial effect is:

[0028] The novel liquid injection valve carries out the innovative design, adopts the soft state's encapsulation cover to be wrapped to the valve seat, and the size is small and exquisite, and compared with the traditional liquid transfer port, it is more small and exquisite, can greatly improve the comfort of patient, and the external plastic package can adopt the metal plastic package puncture membrane in the inside, can bear higher pressure.

[0029] The connecting pipe is connected with the outer pipe through the self-locking pipe, does not need to be sleeved into the locking sleeve again outside, is convenient for the doctor operation, and reduces the operation time.

[0030] The eccentric design of the connecting pipe and the puncture membrane can avoid secondary injury to the suture of the wound during puncture. BRIEF DESCRIPTION OF DRAWINGS

[0031] The utility model will be further described below in combination with the drawings.

[0032] Figure 1 It is the perspective drawing of the liquid injection valve of example one;

[0033] Figure 2 It is the half cutaway view of the liquid injection valve of example one;

[0034] Figure 3 It is the use state diagram of the liquid injection valve of example one;

[0035] Figure 4 It is the perspective drawing of the liquid injection valve of example two;

[0036] Figure 5 It is the half cutaway view of the liquid injection valve of example two;

[0037] Figure 6 It is the use state diagram of the liquid injection valve of example two;

[0038] Wherein, 1, valve body, 2, riveting cylinder, 3, puncture membrane, 4, connecting pipe, 41, anti-slip convex ring, 5, locking sleeve, 51, observation hole, 6, encapsulation cover, 61, cover body, 62, suture end body, 63, suture hole, 7, sealing glue, 8, outer pipe. DETAILED DESCRIPTION

[0039] To make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme of the utility model will be described clearly and completely below in combination with the drawings, and obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor all belong to the scope of the utility model protection.

[0040] Example one

[0041] AsFigures 1 to 3 As shown, a novel injection valve includes...

[0042] A valve seat, wherein an upper valve chamber and a lower valve chamber are provided inside the valve seat, and a puncture port is provided at the upper end of the upper valve chamber;

[0043] The puncture membrane 3 is disposed in the upper valve cavity and forms a sealing fit with the puncture port;

[0044] Connecting pipe 4, one end of which is connected to the lower valve chamber, and the other end is adapted to be connected to the outer pipe 8. The connecting pipe 4 is provided with a non-slip protrusion ring 41.

[0045] Locking sleeve 5, which is sleeved on the connecting pipe 4 and slides between the anti-slip protrusion ring 41 and the valve body 1;

[0046] The rubber sleeve 6 wraps around the valve seat outside the upper valve cavity, and the upper end of the rubber sleeve 6 has an opening to avoid the puncture membrane 3.

[0047] When the outer tube 8 is fitted onto the connecting tube 4, the outer tube 8 is clamped between the locking sleeve 5 and the connecting tube 4. The locking sleeve 5 abuts against the anti-slip protrusion 41 to prevent the locking sleeve 5 from sliding out of the connecting tube 4.

[0048] Specifically, as an optional implementation method in this embodiment, such as Figure 2 As shown, the valve seat includes

[0049] Valve body 1, the upper valve chamber and the lower valve chamber are both opened in the valve body 1, and the inner and outer diameters of the upper valve chamber are both larger than the inner and outer diameters of the lower valve chamber;

[0050] The riveting cylinder 2 is sleeved outside the upper valve cavity. The lower riveting edge of the riveting cylinder 2 is riveted to the lower end of the upper valve cavity, and the upper riveting edge of the upper valve cavity is riveted to the upper end of the upper valve cavity. At the same time, the upper riveting edge restricts the puncture membrane 3 from moving upward.

[0051] The rubber sleeve 6 is wrapped around the outside of the riveting cylinder 2.

[0052] In this embodiment, both the valve body 1 and the riveting cylinder 2 are made of metal.

[0053] Specifically, as an optional implementation method in this embodiment, such as Figure 1 and Figure 2 As shown, the rubber-coated sleeve 6 includes

[0054] Sleeve 61, which is wrapped around the outside of riveting cylinder 2;

[0055] The suture end body 62 is an integral structure with the sleeve body 61, and two suture holes 63 are provided on the suture end body 62.

[0056] In this embodiment, the material of the encapsulation sleeve 6 is silica gel, polyurethane or the like.

[0057] Specifically, as an optional embodiment in this embodiment, as shown in Figure 1 The suture end body 62 is located on the upper end of the sleeve body 61, and the upper end surface is flush with the upper end surface of the sleeve body 61.

[0058] Specifically, as an optional embodiment in this embodiment, as shown in Figure 2 The inner and outer ends of the anti-skid convex ring 41 are both conical surfaces; and the sleeve hole of the locking sleeve 5 forms a conical hole at the front end.

[0059] The anti-skid convex ring 41 can be stably matched with the inner conical hole of the locking sleeve 5 through the outer conical surface.

[0060] Specifically, as an optional embodiment in this embodiment, as shown in Figure 2 A plurality of observation holes 51 are formed on the locking sleeve 5, and each observation hole 51 is distributed circumferentially on the locking sleeve 5.

[0061] Through the observation hole 51, the operator can conveniently observe the depth of the outer tube 8 inserted into the locking sleeve 5, that is, control the length of the outer tube 8 sleeved on the outer tube 8.

[0062] Specifically, as an optional embodiment in this embodiment, as shown in Figure 2 The connecting tube 4 is axially connected with the lower valve cavity and is eccentrically arranged with the axis of the lower valve cavity.

[0063] Specifically, as another optional embodiment in this embodiment, the connecting tube 4 is connected with the lower valve cavity in a meridian direction.

[0064] In this embodiment, the tube is a TPU tube, and the connecting tube 4 and the locking sleeve 5 are metal tubes.

[0065] The puncture film 3 is sealed in the valve body 1 by the upper and lower metal valve parts. The connecting tube 4 in the lower self-locking structure is connected with the valve body 1. The locking sleeve 5 is sleeved on the connecting tube 4. The connecting tube 4 has a convex outer circle which is used in cooperation with the locking sleeve 5 to prevent the locking sleeve 5 from slipping off. The outside is coated with silica gel. The buffer effect is formed between the coating layer and the metal valve body 1 to improve the comfort of the patient during implantation. There is a suture ring on the coating layer to prevent the valve body 1 from moving and displacing.

[0066] In this embodiment, the diameter of the encapsulation sleeve 6 is 13 mm, the height of the valve seat is 8.6 mm, and the length of the connecting tube 4 is 8 mm. The length of the entire liquid injection valve is controlled to be 20 mm.

[0067] The use method of the new liquid injection valve of this embodiment is as follows: Figure 3As shown, press the subcutaneous assembly, expose the implant and the outer tube 8 exchange with the outside world, the outer tube 8 set on the connecting tube 4, the outer tube 8 set between the locking sleeve 5 and the connecting tube 4, forming a sealed self-locking structure, greatly reducing the space of the external sleeve, shortening the operation time, confirming the connection is firm, the liquid valve is fixed in the skin under the opening of the capsule bag through the suture ring, and the wound is sutured. When injecting liquid, gas or medicine, a needle is used to form a passage through the skin and the puncture membrane 3 and the outside.

[0068] Sealed self-locking structure working principle:

[0069] The outer tube 8 is made of elastic material, the outer tube 8 is inserted into the gap between the locking sleeve 5 and the connecting tube 4, the tube body is extruded by the locking sleeve 5 and the connecting tube 4 to form a sealed effect, the locking sleeve 5 and the connecting tube 4 form a parallel inclined plane space in the axial direction, and the outer tube 8 is compressed to ensure that there is enough axial tension while preventing displacement of the outer tube 8, ensuring that the outer tube 8 has enough sealing performance, and the greater the axial tension, the better the connection effect.

[0070] Example two

[0071] The technical scheme of the liquid injection valve of the embodiment is based on example one, the difference is that the structure of the encapsulating sleeve 6 in the new liquid injection valve of the embodiment is changed, based on the new encapsulating sleeve 6 structure, the use method of the liquid injection valve of the embodiment is also adjusted.

[0072] As Figures 4 to 6 shown, the suture end body 62 in the encapsulating sleeve 6 is integrally formed at the lower end of the sleeve body 61, the suture end body 62 is annular structure, and the lower end surface of the suture end body 62 forms a connecting surface for cooperation with the skin surface.

[0073] In this embodiment, four suture holes 63 are formed in the suture end body 62.

[0074] In this embodiment, the diameter of the suture end body 62 is 18mm, the height of the encapsulating sleeve 6 is controlled to be 6mm, and the height of the valve seat is also controlled to be 8.6mm, and the overall length of the liquid injection valve is controlled to be 20mm.

[0075] The infusion valve of the embodiment is to assemble and seal the puncture membrane 3 in the valve seat, the external encapsulating sleeve 6 is made of soft material such as silicone, polyurethane and the like, and when used, the annular suture end body 62 of the encapsulating sleeve 6 and the metal valve body 1 form a flexible gasket, and the liquid injection valve is directly sealed with the skin through sealing glue 7 or double-sided adhesive tape and the like, as Figure 6As shown, while ensuring airtightness, the comfort of the patient is greatly improved, the suture end body 62 has a suture hole 63, which prevents the valve seat from moving and displacing, and the puncture can be directly observed, the size of the liquid injection valve can be greatly reduced, the connecting pipe 4 is in communication with the inner cavity of the valve body 1, the locking sleeve 5 is sleeved on the connecting pipe 4, the connecting pipe 4 is matched with the locking sleeve 5 through the anti-slip convex ring 41, the locking sleeve 5 is prevented from slipping off, and the flexible outer pipe 8 plays a locking and sealing role when being installed. The wound area is small, and for some special needs, the problem can be solved by direct puncture.

[0076] As Figure 6 As shown, the liquid injection valve installation method of the embodiment; press the subassembly, expose the implant and the outer pipe 8 of the exchange with the outside world, the outer pipe 8 is sleeved on the connecting pipe 4, the outer pipe 8 is sleeved between the locking sleeve 5 and the connecting pipe 4, a sealing self-locking structure is formed, the space of the external sleeve ring is greatly reduced, the operation time is shortened, and after confirming that the connection is firm, the suture ring wrapped with silicone is fixed with the skin together, and the firmness of the product is ensured. A layer of waterproof and breathable dressing is covered outside, which can meet the demand of implanting for a short time.

[0077] The various devices (parts without specific structure) selected in the application are all general standard parts or parts known to those skilled in the art, and their structure and principle can be known by the technical personnel through a technical manual or through a conventional experimental method.

[0078] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0079] In the description of the present application, it should be explained that the directions or position relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application. The devices or elements indicated or implied must have a specific orientation, a specific orientation and operation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0080] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. The described device embodiments are merely schematic, for example, the division of the units is only a logical function division, and there can be another division manner in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or in other forms.

[0081] The units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.

[0082] In addition, each functional unit in the various embodiments of the present application can be integrated into one processing unit, or each unit can exist physically, or two or more units can be integrated into one unit.

[0083] With the above ideal embodiments according to the present application as the inspiration, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and must be determined according to the scope of claims.

Claims

1. A new type of liquid injection valve, characterized by, Comprising a valve seat, a upper valve cavity and a lower valve cavity are opened in the valve seat, a puncture port is opened in the upper valve cavity upper end; a puncture membrane (3) is arranged in the upper valve cavity and forms a sealing fit with the puncture port; a connecting pipe (4) is communicated with the lower valve cavity at one end and is adapted to be connected with the outer pipe (8) at the other end, a anti-skid convex ring (41) is arranged on the connecting pipe (4); a locking sleeve (5) is sleeved on the connecting pipe (4) and slides between the anti-skid convex ring (41) and the valve body (1); a rubberized sleeve (6) wraps the valve seat outside the upper valve cavity, an opening for avoiding the puncture membrane (3) is opened in the upper end of the rubberized sleeve (6); when the outer pipe (8) is sleeved on the connecting pipe (4), the outer pipe (8) is clamped between the locking sleeve (5) and the connecting pipe (4), the locking sleeve (5) abuts against the anti-skid convex ring (41) to limit the locking sleeve (5) from sliding out of the connecting pipe (4).

2. The novel liquid injection valve according to claim 1, characterized in that the valve seat comprises a valve body (1), the upper valve cavity and the lower valve cavity are both opened in the valve body (1), the inner and outer diameters of the upper valve cavity are both larger than those of the lower valve cavity; a riveting cylinder (2) is sleeved outside the upper valve cavity, a lower riveting edge of the riveting cylinder (2) rivets the lower end of the upper valve cavity, an upper riveting edge of the riveting cylinder (2) rivets the upper end of the upper valve cavity, and the upper riveting edge limits the puncture membrane (3) from moving upward out of the upper valve cavity; the rubberized sleeve (6) wraps outside the riveting cylinder (2).

3. The novel liquid injection valve according to claim 2, characterized in that the rubberized sleeve (6) comprises a sleeve body (61) which wraps outside the riveting cylinder (2); a suture end body (62) which is an integral structure with the sleeve body (61) and has a plurality of suture holes (63) opened in the suture end body (62).

4. The novel liquid injection valve according to claim 3, characterized in that the suture end body (62) is located at the upper end of the sleeve body (61) and the upper end surface of the suture end body (62) is flush with the upper end surface of the sleeve body (61).

5. The novel liquid injection valve according to claim 3, characterized in that the suture end body (62) is located at the lower end of the sleeve body (61), the suture end body (62) is an annular structure, and the lower end surface of the suture end body (62) forms a connecting surface for cooperating with the skin surface.

6. The novel liquid injection valve according to claim 1, characterized in that the anti-skid convex ring (41) is a tapered surface at both the inner and outer ends; the sleeve hole of the locking sleeve (5) forms a tapered hole at the front end.

7. The novel liquid injection valve according to claim 1, characterized in that a plurality of observation holes (51) are opened in the locking sleeve (5), and each observation hole (51) is distributed circumferentially on the locking sleeve (5).

8. The novel liquid injection valve according to claim 1, characterized in that the connecting pipe (4) is connected with the lower valve cavity in an axial or radial direction.

9. The novel liquid injection valve according to claim 1, characterized in that the connecting pipe (4) is connected axially at the lower end of the lower valve cavity and is arranged eccentrically with the axis of the lower valve cavity.

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