CN217908523U - Reusable syringe cylinder - Google Patents

Abstract

The application discloses a reusable syringe needle cylinder, which comprises a sleeve component, a joint and a piston, wherein the sleeve component comprises a cylinder body, a main cylinder and a sealing ring, the main cylinder is sleeved by the cylinder body, the sealing ring is arranged between the outer wall of the main cylinder and the inner wall of the cylinder body, the sealing rings are arranged at intervals along the axis direction of the main cylinder, the sleeve component is provided with an inner cavity which penetrates along the axis direction of the main cylinder, the cylinder body is made of metal, and the main cylinder is made of glass; the connector is connected with the sleeve assembly, and is provided with a liquid passage which is communicated with the inner cavity; the piston is movably disposed in the inner chamber. The sleeve is made of metal and sleeves the main cylinder, and when the main cylinder bursts, the burst fragments can be prevented from hurting a patient; through setting up a plurality of sealing washers, can effectively improve sealing performance, reduce the possibility that the liquid medicine leaked.

Description

Reusable syringe cylinder

Technical Field

The utility model relates to the field of medical equipment, especially, relate to an injector cylinder.

Background

In the related technology, the syringe of the injector is usually made of high polymer materials, so that the impact resistance is poor, and the syringe is easy to burst and leak under the conditions of high pressure and high flow rate, thereby bringing potential safety hazards to patients. Particularly, high pressure and high flow rate are commonly used in interventional therapy DSA, the pressure needs to reach 1200psi, the syringe needle cylinder is difficult to meet the interventional therapy, and the leakage situation often occurs. Therefore, there is a need for a new syringe barrel.

SUMMERY OF THE UTILITY MODEL

The utility model provides a new reusable syringe cylinder, which can improve the sealing performance and effectively protect patients.

The utility model provides a reusable syringe needle cylinder, which comprises,

the sleeve assembly comprises a cylinder body, a main cylinder and a plurality of sealing rings, wherein the main cylinder is sleeved by the cylinder body, the sealing rings are arranged between the outer wall of the main cylinder and the inner wall of the cylinder body, the sealing rings are arranged at intervals along the axial direction of the main cylinder, the sleeve assembly is provided with an inner cavity penetrating along the axial direction of the main cylinder, the cylinder body is made of metal, and the main cylinder is made of glass;

a fitting connected to the sleeve assembly, the fitting having a fluid passage in communication with the inner chamber; and a process for the preparation of a coating,

a piston movably disposed in the inner chamber.

In one embodiment, the cylinder body has a first end and a second end which are opposite to each other, the cylinder body is provided with a cylinder cavity which penetrates through the first end and the second end along the axial direction of the main cylinder, the main cylinder is arranged in the cylinder cavity, and the joint is connected with the first end.

In one embodiment, the inner chamber comprises a conical first chamber and a cylindrical second chamber, the end of the first chamber with the larger inner diameter is communicated with the second chamber, the end of the first chamber with the smaller inner diameter is communicated with the liquid passage, the first chamber is enclosed by the inner wall of the first end of the cylinder body, and the second chamber is enclosed by the inner wall of the main cylinder.

In one embodiment, the piston comprises a soft sealing part and a hard piston part, the sealing part is fixedly connected with the piston part, and the sealing part and the piston part are in sealing fit with the cavity wall of the inner cavity.

In one embodiment, the sealing portion comprises a conical section and the piston portion comprises a cylindrical section, the conical section fitting with the first chamber and the cylindrical section fitting with the second chamber.

In one embodiment, the inner wall of the cylinder body is provided with two annular grooves, and the two sealing rings are respectively embedded into the two grooves.

In one embodiment, the barrel has a viewing window.

The beneficial effects of the utility model are that: the sleeve is made of metal and sleeves the main cylinder, and when the main cylinder bursts, the burst fragments can be prevented from hurting a patient; through setting up a plurality of sealing washers, can effectively improve sealing performance, reduce the possibility that the liquid medicine leaked.

Drawings

FIG. 1 is a perspective view of a reusable syringe barrel provided in accordance with an embodiment of the present application;

FIG. 2 is a front view of a reusable syringe barrel provided in accordance with embodiments of the present application;

FIG. 3 isbase:Sub>A cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is an exploded perspective view of a reusable syringe barrel provided in accordance with an embodiment of the present application;

fig. 5 is a perspective view of a sleeve according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous specific details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operation steps involved in the embodiments may be interchanged or modified in order as will be apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of description of certain embodiments and are not intended to necessarily constitute and/or sequence.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

As shown in fig. 1 to 5, a reusable injector syringe can be used with a high-pressure contrast injector to perform the functions of sucking and injecting contrast media into an affected part of a patient to be examined. The reusable syringe barrel comprises a sleeve 1, a main barrel 2 and a piston 3. The sleeve 1 includes a barrel 11 and a joint 12, the barrel 11 is a hollow cavity structure having a first end 111 and a second end 112 opposite to each other, a barrel cavity 113 is formed through the first end 111 and the second end 112 in a front-back direction of an axis of the barrel 11, the barrel cavity 113 forms a first opening at the first end 111, the barrel cavity 113 forms a second opening at the second end 112, the barrel cavity 113 includes a first chamber 115 formed at the first end, and the first chamber 115 may be substantially conical. The main barrel 2 is tightly sleeved with the barrel body 11, and the barrel body 11 and the main barrel 2 can be coaxial. The main tube 2 is a tubular body penetrating in the axial direction thereof, and has a first open end and a second open end opposite to each other, and the inner wall of the main tube 2 encloses a cylindrical second chamber 116. The joint 12 is provided at the first end 111 of the cylinder 11, the joint 12 has a liquid passage 121 formed to penetrate forward and backward in the axial direction of the cylinder 11, the end of the first chamber 115 having a smaller inner diameter communicates with the liquid passage 121, and the end of the first chamber 115 having a larger inner diameter communicates with the second chamber 116. The piston 3 is mounted inside the second chamber 116, and is capable of reciprocating within the second chamber 116 in the axial direction of the main cylinder 2.

When the high-pressure radiography injector is used, the electric push rod of the high-pressure radiography injector is connected with the piston 3 and extends into the main cylinder 2, and the piston 3 can reciprocate in the main cylinder 2 under the action of the electric push rod. When the contrast agent is sucked, the connector 12 is communicated with a contrast agent container through a liquid suction pipeline, an electric push rod of the high-pressure contrast injector is connected with the piston 3, the electric push rod drives the piston 3 to move in the main cylinder 2, and the contrast agent in the contrast agent container is sucked into the main cylinder 2. When the contrast agent is injected, the joint 12 is connected with the affected part of the patient to be inspected through the liquid injection pipeline, the electric push rod drives the piston 3 to move in the main cylinder 2, and the contrast agent in the main cylinder 2 is injected into the affected part of the patient to be inspected through the liquid injection pipeline.

Further, a joint 12 is provided at the first end 111 of the barrel 11, and the inner wall of the joint 12 defines the liquid passage 121. The fitting 12 may be a luer fitting having internal threads 122. The joint 12 and the barrel 11 may be independently provided and fixed by a coupling structure by which the joint 12 and the barrel 11 may be detachably coupled or non-detachably coupled. Such as adhesive, snap-fit, threaded, etc. The connector 12 may also be integrally formed or formed with the barrel 11, such as by 3D printing techniques.

Further, the inner wall of the first end 111 of the barrel 11 may define the first chamber 115, and the outer wall of the first end 111 may be a conical surface, and the outer diameter of the first end 111 decreases from the end far away from the joint 12 to the end near the joint 12 along the axial direction of the barrel 11.

Further, the piston 3 includes a soft seal portion 31 and a hard piston portion 32, and the material of the piston portion 32 is relatively hard and the material of the seal portion 31 is relatively soft for the seal portion 31 and the piston portion 32, that is, the seal portion 31 is more easily deformed relative to the piston portion 32 when receiving an external force, such as a frictional force applied to the wall of the main cylinder 2. By providing the soft seal portion 31, the piston 3 can be satisfactorily sealed from the cavity wall of the main cylinder 2, and the leakage of the contrast medium can be prevented. The piston portion 32 is in snap-fit connection with the sealing portion 31, specifically, the sealing portion 31 has an annular clamping strip 311, the clamping strip 311 surrounds the axis of the piston 3, the sealing portion 31 has an annular clamping groove 321, the clamping groove 321 surrounds the axis of the piston 3, and the clamping strip 311 is in snap-fit engagement with the clamping groove 321 to realize the snap-fit connection between the sealing portion 31 and the piston portion 32. In an alternative configuration, the sealing portion 31 has an annular locking groove, and correspondingly, the piston portion 32 has an annular locking strip, and the locking groove 321 is in locking fit with the locking strip 311. The piston portion 32 and the sealing portion 31 may be detachably connected or non-detachably connected in other ways.

Further, the inner cavity 114 is formed by a first conical chamber 115 and a second cylindrical chamber 116 which are connected to each other. The piston 3 is movable within the internal chamber 114. To facilitate the aspiration of contrast media, in the initial position, the seal 31 can be positioned within the first chamber 115 of the lumen 114.

The seal 31 may include a conical section that fits into the first chamber 115. The piston portion 32 may include a cylindrical section that fits into the second chamber 116. Of course, the sealing portion 41 may also include both a conical section and a cylindrical section. The shape of the sealing portion 31 and the piston portion 32 is not limited, and the sealing portion and the piston portion are provided according to the shape and structure of the inner cavity 114, so that the piston 3 can reciprocate in the inner cavity 114 and the piston 3 can be in sealing fit with the cavity wall of the inner cavity 114, where the cavity wall of the inner cavity 114 is the inner wall of the corresponding cylinder 11 or the main cylinder 2. The seal portion 31 and the piston portion 32 may be fixed integrally by a mechanical connection such as snap connection or by adhesion, and the seal portion 31 and the piston portion 32 may be formed by integral injection molding. In addition, the piston portion 32 may have a connection portion 322 to which a power plunger of a high pressure contrast injector is connected.

Further, the syringe needle cylinder further comprises a sealing ring 5, the sealing ring 5 is arranged between the outer wall of the main cylinder 2 and the inner wall of the sleeve 1, the main cylinder 2 is tightly sleeved with the sealing ring 5, and the sealing fit between the main cylinder 2 and the sleeve 1 is realized through the friction fit of the sealing ring 5, the main cylinder 2 and the sleeve 1. The number of the seal rings 5 may be plural, and the seal rings 5 are provided at intervals in the axial direction of the main cylinder 2. In a specific structure, the inner wall of the barrel 11 of the sleeve 1 is concavely provided with a plurality of annular grooves 117 around the axis thereof, and the sealing rings 5 are embedded in the corresponding grooves 117. The barrel 11 and the main barrel 2 are in sealing fit through the sealing ring 5 to form a sleeve assembly 4, and the inner wall of the sleeve assembly 4 encloses the inner cavity 114.

For the embodiment, when the high-pressure injector is used, the piston 3 is connected with an electric push rod of the high-pressure injector, the main cylinder 2 is sleeved on the piston 3, finally the sleeve 1 is sleeved on the main cylinder 2 and the sleeve 1 is fixed on an equipment table of a main machine of the high-pressure injector, the main cylinder 2 is tightly pressed and fixed on the equipment table by the sleeve 1, and the sleeve 1 and the main cylinder 2 are in sealing fit through the sealing ring 5.

For the syringe needle cylinder of the embodiment, the main cylinder 2 can be made of glass materials, so that bubbles in the syringe needle cylinder can be clearly observed, high-temperature sterilization can be realized, and the syringe needle cylinder can be repeatedly used for a long time. The barrel 11 may be made of medical grade metal material, so that it can be reused. The joint 12 integrally connected to the cylinder 11 may be made of a metal material, and thus may be reused. The sealing ring 5 can be made of a high-elasticity sealing soft rubber material. The piston 3 may be disposable. The main barrel 2 is made of glass, and the barrel body 11 is made of metal, so that the glass can be repeatedly used for a long time, and can be detached for cleaning, disinfection and high-temperature sterilization and then reused.

The barrel 11 can be reused, and has the function of protecting the main barrel 2 from bursting when being pressed. The interior of the cylinder 11 may be provided with a groove 117, and the groove 117 may be embedded with the sealing ring 5, so that the sealing ring 5 and the main cylinder 2 are tightly matched to form a seal. Two sealing rings 5 can be arranged, so that double protection is realized, and liquid leakage in the injection process is prevented. The barrel 11 may be provided with an observation window 118 for clinical medical staff to observe the liquid medicine capacity in the injection syringe, so as to know the real-time liquid medicine injection state.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims (7)

1. A reusable syringe barrel, comprising,

the sleeve component comprises a cylinder body, a main cylinder and a plurality of sealing rings, wherein the main cylinder is sleeved by the cylinder body, the sealing rings are arranged between the outer wall of the main cylinder and the inner wall of the cylinder body, the sealing rings are arranged at intervals along the axial direction of the main cylinder, the sleeve component is provided with an inner cavity penetrating along the axial direction of the main cylinder, the cylinder body is made of metal, and the main cylinder is made of glass;

a fitting connected to the sleeve assembly, the fitting having a fluid passage in communication with the inner chamber; and a (C) and (D) and,

a piston movably disposed in the inner chamber.

2. The reusable syringe barrel of claim 1 wherein said barrel has opposite first and second ends, said barrel having a barrel cavity extending through said first and second ends in the direction of the axis of said primary barrel, said primary barrel disposed within said barrel cavity, said adapter connected to said first end.

3. The reusable syringe barrel of claim 2 wherein said internal chamber comprises a conical first chamber and a cylindrical second chamber, said first chamber having an end with a larger internal diameter in communication with said second chamber, said first chamber having an end with a smaller internal diameter in communication with said fluid passageway, said first chamber being bounded by an inner wall of said first end of said barrel, said second chamber being bounded by an inner wall of said main barrel.

4. The reusable syringe barrel of claim 3 wherein the plunger comprises a soft seal and a hard plunger portion, the seal and the plunger portion are fixedly connected, and both the seal and the plunger portion are in sealing engagement with the wall of the internal cavity.

5. The reusable syringe barrel of claim 4 wherein the sealing portion comprises a conical section and the piston portion comprises a cylindrical section, the conical section fitting with the first chamber and the cylindrical section fitting with the second chamber.

6. The reusable syringe barrel of claim 1 wherein the inner wall of said barrel is provided with two annular grooves and said two sealing rings are inserted into said two grooves, respectively.

7. The reusable syringe barrel of any one of claims 1 to 6 wherein the barrel has a viewing window.

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