Distinguishable syringe

Abstract

The distinguishable injector comprises a liquid injection cylinder and a push rod assembly, the liquid injection cylinder is provided with a near end and a far end, the near end is provided with a liquid outlet, and the far end is provided with a piston opening; the push rod assembly is inserted into the liquid injection cylinder from the piston opening and slidably arranged in the liquid injection cylinder in a sleeved mode, the push rod assembly is provided with a color identification piece, and the color identification piece is used for identifying different clinical purposes. According to the distinguishable injector, the color identification piece is arranged on the push rod assembly, so that the problem that the purposes of a traditional injector are difficult to distinguish rapidly is effectively solved. Medical staff can visually and rapidly identify the clinical application of the injector through the color identification piece, and the risk of wrong medication is remarkably reduced. Meanwhile, the color identification piece is integrated on the push rod assembly, so that the basic function and the use mode of the injector cannot be influenced, and the practicability and the operation convenience of the product are kept. The simple and effective improvement not only improves the clinical medication safety, but also relieves the working pressure of medical staff.

Description

TECHNICAL FIELD

[0001] The utility model relates to a syringe especially a distinguishable syringe. BACKGROUND

[0002] As one of the most basic and highest frequency medical instruments in medical institutions, the syringe plays an irreplaceable role in the clinical diagnosis and treatment process. In modern medical practice, the application scenarios of the syringe are very wide, including but not limited to external drug smearing, aerosol inhalation therapy, intravenous injection, muscle injection, subcutaneous injection, arterial blood sampling, intravenous blood sampling and other purposes. These syringes with different purposes are often similar in appearance, and are made of transparent medical-grade materials to facilitate medical staff to observe the liquid situation in the syringe.

[0003] In clinical practice, medical staff need to inject multiple drugs for patients in a short time in some cases. In this case, medical staff usually prepare multiple syringes containing different drugs at the same time to improve work efficiency and reduce patient waiting time. However, due to the high similarity in appearance of conventional syringes and the colorless and transparent design, it brings certain use obstacles and safety hazards to clinical use. Medical staff have to repeatedly confirm the drug type in the syringe before each medication to prevent medication errors. Even if the medical staff have checked multiple times before use, there is still a risk of misusing drugs. Once a medication error occurs, it may cause adverse reactions to the patient, and even endanger life safety in severe cases. SUMMARY

[0004] The utility model aims at least in a certain extent solves one of the technical problems in the related technical field. For this purpose, the purpose of the utility model is to provide a distinguishable syringe.

[0005] To achieve the above purpose, according to the distinguishable syringe of the utility model embodiment, including:

[0006] Liquid injection cylinder, the liquid injection cylinder has proximal end and distal end, the proximal end has liquid outlet, the distal end has piston port;

[0007] Push rod assembly, the push rod assembly is inserted to the liquid injection cylinder from the piston port and is slidably sleeved in the liquid injection cylinder, the push rod assembly has color identification element, and the color identification element is used for identifying different clinical purposes.

[0008] The application discloses a distinguishable syringe, which comprises a syringe barrel, a plunger assembly and a color identification element.

[0009] In addition, the distinguishable syringe according to the above-mentioned embodiments of the application can further have the following additional technical features.

[0010] According to one embodiment of the application, the plunger assembly further comprises:

[0011] a rod, which has a piston end and an operation end, the piston end is arranged in the syringe barrel, and the operation end extends out of the piston port;

[0012] a piston element, which is arranged on the piston end and forms a seal with the inner wall of the syringe barrel;

[0013] The color identification element is a tube sleeve with a predetermined color, which is arranged on the operation end and is fixed to the rod in the axial direction.

[0014] According to one embodiment of the application, the end surface of the operation end is provided with a stop plate, and one end of the tube sleeve abuts against the stop plate.

[0015] According to one embodiment of the application, the periphery of one end of the tube sleeve is provided with a clamping edge protruding inward in the radial direction, and the outer surface of the operation end is provided with a retaining buckle.

[0016] When the tube sleeve is arranged on the operation end and is pushed towards the stop plate, the clamping edge is clamped between the retaining buckle and the stop plate.

[0017] According to one embodiment of the application, the plunger assembly further comprises an elastic compression ring, which is arranged on the rod and located between the other end of the tube sleeve and the distal end.

[0018] When the rod is pushed into the syringe barrel to a predetermined depth, the elastic compression ring abuts against the distal end, and along with the continuous pushing of the rod, the elastic compression ring is compressed in the axial direction until the remaining liquid in the syringe barrel is completely squeezed out.

[0019] According to one embodiment of the utility model, the other end of the sleeve has a radially outwardly protruding compression ring portion, and one end of the elastic compression ring is fixed to the compression ring portion.

[0020] According to one embodiment of the utility model, the elastic compression ring is provided with a plurality of plunger portions adjacent to one end of the sleeve, the plurality of plunger portions are arranged at intervals along the circumference of the elastic compression ring, the compression ring portion is provided with a plurality of through holes, the plurality of through holes correspond one-to-one to the plurality of plunger portions, and each plunger portion is clamped in the corresponding through hole.

[0021] According to one embodiment of the utility model, the elastic compression ring is made of elastic plastic material, and the inner circumferential surface of the elastic compression ring is provided with a concave arc-shaped groove.

[0022] The additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or be known through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in the drawings without creative labor.

[0024] Figure 1 It is the structure diagram of the distinguishable syringe of the embodiment of the utility model;

[0025] Figure 2 It is the exploded view of the distinguishable syringe of the embodiment of the utility model;

[0026] Figure 3 It is the partial exploded view of the distinguishable syringe of the embodiment of the utility model;

[0027] Figure 4 It is Figure 3 The local enlarged view of A in Fig.

[0028] Figure 5 It is the structure diagram of the sleeve and the elastic compression ring in the distinguishable syringe of the embodiment of the utility model;

[0029] Figure 6 It is the sectional view of the sleeve and the elastic compression ring in the distinguishable syringe of the embodiment of the utility model;

[0030] Figure 7 It is the exploded view of the sleeve and the elastic compression ring in the distinguishable syringe of the embodiment of the utility model.

[0031] Reference signs:

[0032] 10, liquid injection barrel;

[0033] 20, push rod assembly;

[0034] 201, rod piece;

[0035] 2011, stop buckle;

[0036] 2012, stop plate;

[0037] 202, piston piece;

[0038] 203, color identification piece;

[0039] 2031, buckle;

[0040] 2032, compression ring part;

[0041] 204, elastic compression ring;

[0042] 2041, plunger part;

[0043] H204, arc-shaped groove.

[0044] The realization, functional features and advantages of the utility model will be further described in combination with embodiments with reference to the drawings. DETAILED DESCRIPTION

[0045] The embodiments of the utility model will be described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation of the utility model, all other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the utility model belong to the scope protected by the utility model.

[0046] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms 'center', 'longitudinal', 'transverse', 'length', 'width', 'thickness', 'upper', 'lower', 'front','rear', 'left', 'right','vertical', 'horizontal', 'top', 'bottom', 'inner', 'outer', 'clockwise', 'counterclockwise', 'axial', 'circumferential', 'radial' and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model.

[0047] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second" or "third" can explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality of" is two or more, unless specifically and explicitly limited otherwise.

[0048] In the present application, unless specifically and explicitly defined otherwise, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, 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, or it can be connected between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] In the present application, unless specifically and explicitly defined otherwise, "on" or "under" of the first feature to the second feature can include direct contact of the first and second features, or can include indirect contact of the first and second features through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0050] The distinguishable syringe according to the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0051] Referring to Figures 1 to 7 As shown in the drawings, the distinguishable syringe according to the embodiments of the present application comprises a liquid injection barrel 10 and a push rod assembly 20.

[0052] Specifically, the liquid injection barrel 10 has a proximal end and a distal end, the proximal end has a liquid outlet, and the distal end has a piston port. The liquid injection barrel 10 can be made of medical grade transparent material, and the whole is in a cylindrical shape. The proximal end refers to the end close to the human body during use, and the liquid outlet of the proximal end is used for connecting a needle or a infusion pipeline, etc. The liquid outlet is designed with standardization, and can be reliably connected with infusion needles and infusion pipelines of various specifications. The piston port of the distal end is used for setting the push rod assembly 20, the inner diameter of the piston port is accurately matched with the outer diameter of the push rod assembly 20, so as to ensure the sealing property and smoothness of the push rod assembly 20 during movement.

[0053] The push rod assembly 20 is inserted into the liquid injection cylinder 10 and slidably sleeved in the liquid injection cylinder 10, and the push rod assembly 20 has a color identification element 203 for identifying different clinical uses. The color identification element 203 can adopt a plurality of different colors to correspond to different clinical uses. For example, pink can be used to represent the aerosol use, yellow can be used to represent the external use (such as bladder irrigation) use, and transparent can be used to represent the intravenous injection use.

[0054] Since in various hospitals, different clinical uses of drugs are usually identified by using various different color label papers, and these colors have formed a deep memory for medical staff, the use of the color identification element 203 consistent with the use identification color of the hospital can make the medical staff easily identify the uses of the different syringes, significantly reduce the identification difficulty of the medical staff when using the syringes, improve the efficiency, and reduce the risk of medication errors.

[0055] According to the syringe capable of being distinguished provided by the embodiment of the utility model, the color identification element 203 is arranged on the push rod assembly 20, and the problem that the traditional syringe is difficult to quickly distinguish the use is effectively solved. The medical staff can intuitively and quickly identify the clinical use of the syringe through the color identification element 203, and the risk of medication errors is significantly reduced. Compared with the traditional syringe, the design does not need to rely on the mode of additional labels or marks, and has better identification durability and reliability. At the same time, since the color identification element 203 is integrated on the push rod assembly 20, the basic function and use mode of the syringe are not affected, and the practicability and operation convenience of the product are maintained. The simple and effective improvement not only improves the clinical medication safety, but also reduces the work pressure of the medical staff.

[0056] In some embodiments of the utility model, the push rod assembly 20 further includes a rod element 201 and a piston element 202, the rod element 201 has a piston end and an operation end, the piston end is arranged in the liquid injection cylinder 10, and the operation end is arranged outside the piston port for the medical staff to push and pull.

[0057] The piston element 202 is sleeved on the piston end and forms a seal with the inner wall of the liquid injection cylinder 10. The piston element 202 is made of high-elastic medical-grade rubber material and is sleeved on the piston end of the rod element 201. The outer diameter of the piston element 202 is slightly larger than the inner diameter of the liquid injection cylinder 10, and through appropriate interference fit, reliable sealing contact with the inner wall of the liquid injection cylinder 10 is ensured.

[0058] The color identification element 203 is a tube sleeve with a predetermined color, which is sleeved on the operation end and is fixed in the axial direction with the rod element 201 to prevent axial displacement of the tube sleeve during use.

[0059] In the embodiment, the sleeve is sleeved on the operation end and is away from the liquid injection cylinder 10, and thus cannot contact the liquid, so that possible cross contamination is avoided. Moreover, the sleeve is located on the operation end, so that medical staff can quickly identify the use when taking the syringe, and the operation efficiency is improved. In addition, since the sleeve is in a sleeved form, different colors of the sleeve can be configured according to actual needs, and the sleeve has strong flexibility and universality.

[0060] Preferably, the end face of the operation end is provided with a stop plate 2012, and one end of the sleeve abuts against the stop plate 2012. In this way, the stop plate 2012 facilitates finger pushing and pulling operation, and meanwhile, the sleeve abuts against the stop plate 2012, that is, the position of the sleeve is close to the rear end of the rod part, and thus the sleeve does not interfere with the pushing of the rod 201, and the use is more reliable.

[0061] In an embodiment of the utility model, one end of the sleeve has a clamping edge 2031 protruding inward along the radial direction, and the outer side of the operation end has a retaining buckle 2011. When the sleeve is sleeved on the operation end and is pushed towards the stop plate 2012, the clamping edge 2031 is clamped between the retaining buckle 2011 and the stop plate 2012.

[0062] When the sleeve is installed, the sleeve is axially pushed towards the operation end. During the pushing process, the clamping edge 2031 will pass the retaining buckle 2011 due to elastic deformation of the material, and when the sleeve is pushed into place, the clamping edge 2031 falls into the space between the retaining buckle 2011 and the stop plate 2012. At this time, the clamping edge 2031 is limited in the space and cannot move forward or backward in the axial direction, so that the stable position of the sleeve is achieved.

[0063] The clamping structure is convenient to assemble and disassemble. When it is necessary to replace the sleeve of different colors, the sleeve can be disassembled and assembled through appropriate force, so that the stability in use is ensured, and the convenience of replacement is also considered.

[0064] In an embodiment of the utility model, the push rod assembly 20 further comprises an elastic compression ring 204, which is sleeved on the rod 201 and located between the other end of the sleeve and the distal end.

[0065] When the rod 201 is pushed into the liquid injection cylinder 10 to a predetermined depth, the elastic compression ring 204 abuts against the distal end, and along with continuous pushing of the rod 201, the elastic compression ring 204 is compressed in the axial direction until the remaining liquid in the liquid injection cylinder 10 is completely squeezed out. The structure design makes it possible to provide resistance by compression of the elastic compression ring 204 when the amount of the medicine in the liquid injection cylinder 10 is not much, so as to reduce the pushing speed and further ensure slow pushing of the medicine.

[0066] During use, in the initial and middle stages of the injection process, the push rod assembly 20 can normally advance without being affected by additional resistance due to the distance between the elastic compression ring 204 and the distal end of the syringe 10. When the injection reaches the final stage, i.e., the rod 201 advances to the predetermined depth, the elastic compression ring 204 begins to contact the distal end of the syringe 10. At this time, as the rod 201 continues to advance forward, the elastic compression ring 204 will be gradually compressed, generating an increasing reverse resistance.

[0067] This gradual change in resistance, from the perspective of safety, the resistance generated by the compression deformation of the elastic compression ring 204 can effectively reduce the advance speed when the remaining amount of drug in the syringe 10 is small. This natural speed control mechanism avoids the discomfort caused by too fast pushing at the end of the injection, and improves the safety of the injection. From the perspective of operation experience, the elastic compression ring 204 provides a gradual tactile feedback. Medical personnel can clearly feel that the injection has entered the final stage through the sense of touch, and this feedback mechanism helps to better control the injection process, especially in the case of precise control of the drug delivery speed. In addition, from the perspective of function implementation, the compression process of the elastic compression ring 204 matches the pushing of the remaining drug at the end of the injection. As the compression degree increases, the force required for advancement gradually increases, and this force feedback characteristic naturally guides the operator to slow down the advancement speed, ensuring that the drug is slowly and completely pushed out.

[0068] In an embodiment of the present application, the other end of the sleeve has a compression ring portion 2032 protruding radially outward, and one end of the elastic compression ring 204 is fixed to the compression ring portion 2032. Preferably, the compression ring portion 2032 can be made of the same material as the sleeve, and is formed in an integral injection molding manner.

[0069] The compression ring portion 2032 provides reliable fixation for the elastic compression ring 204, significantly increases the contact area with the elastic compression ring 204, improves the connection strength, and when the elastic compression ring 204 is extruded, the compression ring portion 2032 exerts pressure on the elastic compression ring 204, improving the compression reliability of the elastic compression ring 204. The fixed connection between the elastic compression ring 204 and the compression ring portion 2032 ensures that separation does not occur during use.

[0070] In an embodiment of the present application, the elastic compression ring 204 is provided with a plurality of plunger portions 2041 adjacent to one end of the sleeve, the plurality of plunger portions 2041 are arranged in a circumferential direction of the elastic compression ring 204, the compression ring portion 2032 is provided with a plurality of through holes, the plurality of through holes correspond one-to-one to the plurality of plunger portions 2041, and each plunger portion 2041 is clamped in the corresponding through hole.

[0071] In the assembly process, the plunger part 2041 of the elastic compression ring 204 is aligned with the through hole of the compression ring part 2032, and the plunger part 2041 is inserted into the corresponding through hole in sequence by appropriate pressure. Because the head of the plunger part 2041 is in interference fit with the through hole, the plunger part 2041 will be radially compressed and deformed during assembly. When the head of the plunger part 2041 completely passes through the through hole, the end thereof will be re-expanded and restored, thereby forming a mechanical stop action. This assembly method is not only simple to operate, but also firm and reliable in connection.

[0072] In some embodiments of the utility model, the elastic compression ring 204 is made of an elastic plastic material, such as a medical-grade thermoplastic elastomer (TPE) material, and the inner circumferential surface of the elastic compression ring 204 is provided with a concave arc-shaped groove H204.

[0073] The elastic plastic material has excellent elastic deformation capability, good wear resistance and biocompatibility. The Shore hardness of the elastic plastic material can be selected to be between 60-80A, which can ensure sufficient elastic deformation capability and maintain good mechanical strength. The concave arc-shaped groove H204 is arranged around the inner circumferential surface of the elastic compression ring 204, and the cross section thereof is in arc shape. Due to the existence of the concave arc-shaped groove H204, the elastic compression ring 204 can easily deform outward when subjected to the pressure of the sleeve, thereby improving the reliability of the compression deformation.

[0074] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0075] The above only describes the preferred embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by the utility model specification and the drawings contents, or direct / indirect application in other related technical fields under the utility model concept of the utility model is included in the patent protection range of the utility model.

Claims

1. A distinguishable syringe, characterized in that, The application relates to a push rod assembly for a liquid injection device. The push rod assembly comprises: a rod member having a piston end and an operation end, the piston end being arranged in the liquid injection cylinder, and the operation end extending out of the piston port; 2. The distinguishable syringe of claim 1, wherein, a piston member arranged in the piston end and sealing with the inner wall of the liquid injection cylinder; wherein the color identifier is a tube sleeve with a predetermined color, the tube sleeve being arranged on the operation end and being axially fixed with the rod member. An end surface of the operation end is provided with a stop plate, and one end of the tube sleeve abuts against the stop plate. One end of the tube sleeve is provided with a clamping edge protruding inward in the radial direction, and an outer surface of the operation end is provided with a retaining buckle; 3. The distinguishable syringe of claim 2, wherein, When the tube sleeve is arranged on the operation end and is pushed towards the stop plate, the clamping edge is clamped between the retaining buckle and the stop plate.

4. The distinguishable syringe of claim 3, wherein, The push rod assembly further comprises an elastic compression ring arranged on the rod member and located between the other end of the tube sleeve and the distal end; When the rod member is pushed into the liquid injection cylinder to a predetermined depth, the elastic compression ring abuts against the distal end, and with the continuous pushing of the rod member, the elastic compression ring is compressed in the axial direction until the residual liquid in the liquid injection cylinder is completely squeezed out.

5. The distinguishable syringe of claim 3, wherein, The other end of the tube sleeve is provided with a pressing ring part protruding outward in the radial direction, and one end of the elastic compression ring is fixed on the pressing ring part. The elastic compression ring is provided with a plurality of plunger parts adjacent to one end of the tube sleeve, the plunger parts are arranged at intervals in the circumferential direction of the elastic compression ring, the pressing ring part is provided with a plurality of through holes, the through holes correspond to the plunger parts one by one, and each plunger part is clamped in the corresponding through hole.

6. The distinguishable syringe of claim 5, wherein, The elastic compression ring is made of elastic plastic material, and the inner circumferential surface of the elastic compression ring is provided with a concave arc-shaped groove.

7. The distinguishable syringe of claim 6, wherein, ​ 8. The distinguishable syringe of claim 5, wherein, ​

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