Liquid medicine propelling assembly for injection pen
By designing a liquid propulsion component for the injection pen, the problem of skin scratches caused by the exposure of the traditional syringe needle is solved, and a safe and efficient injection operation is achieved.
Patent Information
- Application Number
- CN202422263548.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The needle of a traditional syringe is exposed to the outside and can easily scratch the patient's skin, making the operation unsafe.
A drug liquid propulsion assembly for an injection pen is designed, including a drug storage assembly, a drug pushing assembly, and a power assembly. Through structural design, the needle is stored in the drug tube when not in use, and is automatically pushed out and penetrates the skin during injection.
The safety and efficiency of the injection operation are improved, the needle is prevented from scratching the patient when not in use, and quantitative injection is achieved.
Smart Images
Figure CN223350715U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a liquid medicine propulsion component for an injection pen. Background Art
[0002] A syringe is a common medical device consisting of a barrel with a small hole at the front and a matching piston rod. Syringes are used to inject or withdraw small amounts of liquids or gases into or from otherwise inaccessible areas. When the piston rod is withdrawn, the liquid or gas is drawn in through the small hole at the front of the barrel, and when the piston rod is pushed in, the liquid or gas is expelled.
[0003] Traditional syringes draw liquid through a core rod and then inject it through a needle. This type of syringe usually exposes the needle to the outside and cannot automatically retract, which can easily scratch the patient's skin. To this end, we provide a liquid propulsion assembly for an injection pen to solve the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide a liquid medicine propulsion assembly for an injection pen. Through the specific structural design of the medicine storage assembly, the medicine pushing assembly and the power assembly, the problem of the existing needle being exposed to the outside and easily scratching the patient's skin is solved.
[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:
[0006] The present utility model is a liquid medicine propulsion assembly for an injection pen, comprising a medicine storage assembly, a medicine pushing assembly and a power assembly, wherein the medicine storage assembly comprises a first medicine tube, wherein the liquid medicine to be injected is stored inside the first medicine tube, the medicine pushing assembly is installed inside the first medicine tube, the medicine pushing assembly comprises a second medicine tube, wherein the second medicine tube is coaxially arranged with the first medicine tube, a needle is provided at one end of the second medicine tube, the power assembly is installed on the peripheral side of the first medicine tube, the power assembly comprises a limit ring, and the limit ring is rotatably connected to the first medicine tube.
[0007] The utility model is further configured such that a conical piece is fixedly provided at one end of the first medicine tube, a needle outlet is provided at the top of the conical piece, a threaded ring is fixedly provided at the other end of the first medicine tube, a liquid inlet is provided at the top of the threaded ring, and the liquid inlet is connected to the interior of the first medicine tube.
[0008] The utility model is further configured such that a cross groove is provided at one end of the first medicine tube close to the threaded ring, an L-shaped slide groove, an inclined slide groove and a straight slide groove are provided on the peripheral side of the first medicine tube, one end of the L-shaped slide groove is connected to one end of the inclined slide groove, and the other end of the inclined slide groove is connected to one end of the straight slide groove.
[0009] The present invention is further configured such that a liquid viewing port is provided on the peripheral side of the first medicine tube, a transparent plate is installed inside the liquid viewing port, the medicine pushing assembly also includes a medicine pushing rod, the medicine pushing rod is arranged inside the second medicine tube, an extrusion plate is fixedly provided on one end of the medicine pushing rod, and the peripheral side of the extrusion plate is slidably engaged with the inner wall of the second medicine tube.
[0010] The utility model is further configured as follows: a plurality of support plates are fixedly provided on the side surface of the medicine pushing rod, the outer sides of the support plates are slidably fitted with the second medicine tube, a positioning ring is fixedly provided on the side surface of the medicine pushing rod, and a pull disc is fixedly provided on the other end of the medicine pushing rod.
[0011] The present invention is further configured such that a connecting rod is fixedly provided on the peripheral side of the medicine pushing rod, and the connecting rod is slidably fitted with the L-shaped slide groove, the inclined slide groove and the straight slide groove, and the connecting rod passes through the outside of the first medicine tube.
[0012] The utility model is further configured as follows: a movable tube is fixedly provided at one end of the connecting rod, the movable tube is sleeved on the peripheral side of the first medicine tube, a limiting groove is provided at one end of the movable tube close to the pull plate, a plurality of elastic return parts are circumferentially fixed on one side of the limiting ring, and one end of the elastic return part is fixedly connected to the movable tube.
[0013] The utility model is further configured as follows: two limiting rods are fixedly provided on one side of the limiting ring close to the elastic return member, the limiting rods are slidably engaged with the limiting grooves, an electromagnet is installed on one side of the limiting ring close to the elastic return member, a permanent magnet is installed at one end of the movable tube, and the electromagnet and the permanent magnet are magnetically attracted to each other.
[0014] The utility model has the following beneficial effects:
[0015] The utility model controls the medicine pushing rod to move along the first medicine tube, so that the medicine liquid in the first medicine tube gradually enters the second medicine tube. When the second medicine tube is filled with medicine liquid, the needle outlet is opened and the power component is controlled to push the second medicine tube out of the first medicine tube. The needle is pushed out of the needle outlet until it pierces the skin, and then the injection is performed. This operation method is to place the needle inside the medicine tube and control the movement of the needle when injection is required. This method makes the syringe safer during operation.
[0016] The utility model controls the pull plate to drive the medicine pushing rod to move so that the medicine liquid enters the second medicine tube, and at the same time the connecting rod moves along the L-shaped slide. When the second medicine tube 201 is full of medicine liquid, the movable tube is rotated to drive the connecting rod to move along the inclined slide and the straight slide. During this process, the needle is pushed out of the first medicine tube, and the medicine liquid in the second medicine tube can be injected into the human body. This method can achieve quantitative injection. After one injection is completed, the medicine liquid in the first medicine tube can be transported to the second medicine tube again. There is no need to go outside to get medicine, which improves the efficiency of injection.
[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 This is a schematic diagram of the structure of a liquid medicine propulsion component for an injection pen.
[0020] Figure 2 for Figure 1 Structural cross-sectional view.
[0021] Figure 3 for Figure 1 Schematic diagram of part of the structure.
[0022] Figure 4 for Figure 3 Schematic diagram of the structure from another angle.
[0023] Figure 5 for Figure 1 Schematic diagram of part of the structure.
[0024] Figure 6 for Figure 5 The structural front view.
[0025] Figure 7 This is a partial structural diagram of the medicine pushing component in the utility model.
[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0027] 1-drug storage assembly, 101-first drug tube, 102-conical part, 103-needle outlet, 104-threaded ring, 105-liquid inlet, 106-cross groove, 107-L-shaped slide, 108-inclined slide, 109-slotted slide, 2-drug pushing assembly, 201-second drug tube, 202-drug pushing rod, 203-squeezing disk, 204-support plate, 205-positioning ring, 206-pull disk, 207-connecting rod, 3-power assembly, 301-limiting ring, 302-moving tube, 303-elastic reset member, 304-limiting rod. DETAILED DESCRIPTION
[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0029] For specific embodiment 1, please refer to Figure 1-7 The present invention is a liquid medicine propulsion assembly for an injection pen, comprising a medicine storage assembly 1, a medicine pushing assembly 2 and a power assembly 3. The medicine storage assembly 1 comprises a first medicine tube 101, which stores the liquid medicine to be injected. The medicine pushing assembly 2 is installed inside the first medicine tube 101. The medicine pushing assembly 2 comprises a second medicine tube 201, which is coaxially arranged with the first medicine tube 101. A needle 4 is provided at one end of the second medicine tube 201. The power assembly 3 is installed on the side surface of the first medicine tube 101. The power assembly 3 comprises a limit ring 301, which is rotatably connected to the first medicine tube 101.
[0030] Specifically, a conical member 102 is fixedly provided at one end of the first medicine tube 101, and a needle outlet 103 is provided at the top of the conical member 102 (when injection is not required, the needle outlet 103 is in a closed state), and a threaded ring 104 is fixedly provided at the other end of the first medicine tube 101, and a liquid inlet 105 is provided at the top of the threaded ring 104, and the liquid inlet 105 is connected to the interior of the first medicine tube 101.
[0031] Furthermore, a cross groove 106 is provided at one end of the first medicine tube 101 near the threaded ring 104, and an L-shaped slide groove 107, an inclined slide groove 108 and a straight slide groove 109 are provided on the side surface of the first medicine tube 101. One end of the L-shaped slide groove 107 is connected to one end of the inclined slide groove 108, and the other end of the inclined slide groove 108 is connected to one end of the straight slide groove 109. A liquid viewing port is provided on the side surface of the first medicine tube 101, and a transparent plate 110 is installed inside the liquid viewing port.
[0032] The operation process of this embodiment is as follows: in the initial state, the needle 4 is in the first medicine tube 101, and the medicine liquid is added to the first medicine tube 101 from the liquid inlet 105, and then the medicine pushing component 2 is controlled to move leftward along the first medicine tube 101 (see the attached figure for details). Figure 2 As shown in the figure, the liquid medicine gradually enters the second medicine tube 201. When the second medicine tube 201 is filled with the liquid medicine, the needle outlet 103 is opened and the power component 3 is controlled to push the second medicine tube 201 out of the first medicine tube 101. The needle 4 is pushed out of the needle outlet 103 until it pierces the skin. Then, the medicine pushing component 2 is pushed to the right to drive the liquid medicine in the first medicine tube 101 to be injected into the human body. After the injection is completed, the needle 4 is disinfected. Then, the power component 3 is used to move the first medicine tube 101 into the first medicine tube 101. The medicine pushing injection can continue through the above injection method.
[0033] Specific embodiment 2, based on specific embodiment 1, the medicine pushing component 2 also includes a medicine pushing rod 202, which is arranged inside the second medicine tube 201, and a squeezing disk 203 is fixedly provided at one end of the medicine pushing rod 202, and the side surface of the squeezing disk 203 slides with the inner wall of the second medicine tube 201.
[0034] Specifically, a number of support plates 204 are fixedly provided on the side of the medicine pushing rod 202, and the outer sides of the support plates 204 are slidably fitted with the second medicine tube 201. A positioning ring 205 is fixedly provided on the side of the medicine pushing rod 202, and a pull plate 206 is fixedly provided on the other end of the medicine pushing rod 202. A connecting rod 207 is fixedly provided on the side of the medicine pushing rod 202, and the connecting rod 207 is slidably fitted with the L-shaped slide groove 107, the inclined slide groove 108 and the straight slide groove 109, and the connecting rod 207 passes through the outside of the first medicine tube 101.
[0035] Furthermore, a movable tube 302 is fixedly provided at one end of the connecting rod 207, and the movable tube 302 is sleeved on the side surface of the first medicine tube 101. A limiting groove is provided at one end of the movable tube 302 close to the pull plate 206, and a plurality of elastic reset parts 303 are fixedly provided in a circumferential direction on one side of the limiting ring 301. One end of the elastic reset part 303 is fixedly connected to the movable tube 302, and two limiting rods 304 are fixedly provided on one side of the limiting ring 301 close to the elastic reset part 303. The limiting rods 304 slide in cooperation with the limiting groove, and an electromagnet is installed on one side of the limiting ring 301 close to the elastic reset part 303. A permanent magnet is installed at one end of the movable tube 302, and the electromagnet and the permanent magnet are magnetically attracted to each other.
[0036] The operation process of this embodiment is as follows: Figure 2As shown, in the initial state, the medicine pushing rod 202 is at the rightmost position of the second medicine tube 201. When the medicine liquid is added to the first medicine tube 101, the pull plate 206 is pulled to control the medicine pushing rod 202 to move to the left so that the medicine liquid enters the second medicine tube 201. At the same time, the connecting rod 207 moves along the L-shaped slide 107, and the elastic reset member 303 is compressed. When the second medicine tube 201 is filled with medicine liquid, the moving tube 302 is rotated, driving the connecting rod 207 to rotate to one end of the inclined slide 108. During this process, the second medicine tube 201, the needle 4, the limiting ring 301, the elastic reset member 303 and the limiting rod 304 rotate synchronously, and then the moving tube 302 is controlled to move. After the injection is completed, the electromagnet is energized to magnetize, and the movable tube 302 is controlled to move along the straight slot 109, the inclined slot 108 and the L-shaped slot 107 to move to the initial position, and the second drug tube 201 and the needle 4 return to their initial positions.
[0037] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0038] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. A liquid medicine propulsion assembly for an injection pen, characterized in that: include: A medicine storage component (1), the medicine storage component (1) comprising a first medicine tube (101), wherein the first medicine tube (101) stores a medicine solution to be injected; a medicine pushing assembly (2), the medicine pushing assembly (2) being installed inside the first medicine tube (101), the medicine pushing assembly (2) comprising a second medicine tube (201), the second medicine tube (201) being coaxially arranged with the first medicine tube (101), and a needle (4) being provided at one end of the second medicine tube (201); and a power assembly (3), wherein the power assembly (3) is mounted on the side surface of the first medicine tube (101), and the power assembly (3) comprises a limiting ring (301), and the limiting ring (301) is rotatably connected to the first medicine tube (101).
2. The liquid medicine propulsion assembly for an injection pen according to claim 1, characterized in that: A conical part (102) is fixedly provided at one end of the first medicine tube (101), and a needle outlet (103) is provided at the top of the conical part (102). A threaded ring (104) is fixedly provided at the other end of the first medicine tube (101), and a liquid inlet (105) is provided at the top of the threaded ring (104). The liquid inlet (105) is communicated with the interior of the first medicine tube (101).
3. The liquid medicine propulsion assembly for an injection pen according to claim 2, characterized in that: A cross groove (106) is provided at one end of the first medicine tube (101) near the threaded ring (104), and an L-shaped slide groove (107), an inclined slide groove (108) and a straight slide groove (109) are provided on the side surface of the first medicine tube (101). One end of the L-shaped slide groove (107) is connected to one end of the inclined slide groove (108), and the other end of the inclined slide groove (108) is connected to one end of the straight slide groove (109).
4. The liquid medicine propulsion assembly for an injection pen according to claim 3, characterized in that: A liquid viewing port is provided on the side surface of the first medicine tube (101), and a transparent plate (110) is installed inside the liquid viewing port. The medicine pushing assembly (2) further comprises a medicine pushing rod (202), which is arranged inside the second medicine tube (201). An extrusion disk (203) is fixedly provided at one end of the medicine pushing rod (202), and the side surface of the extrusion disk (203) is in sliding engagement with the inner wall of the second medicine tube (201).
5. The liquid medicine propulsion assembly for an injection pen according to claim 4, characterized in that: A plurality of support plates (204) are fixedly provided on the side surface of the medicine pushing rod (202), and the outer sides of the support plates (204) are slidably engaged with the second medicine tube (201). A positioning ring (205) is fixedly provided on the side surface of the medicine pushing rod (202), and a pull plate (206) is fixedly provided on the other end of the medicine pushing rod (202).
6. The liquid medicine propulsion assembly for an injection pen according to claim 5, characterized in that: A connecting rod (207) is fixedly provided on the side surface of the medicine pushing rod (202), and the connecting rod (207) is slidably matched with the L-shaped slide groove (107), the inclined slide groove (108) and the straight slide groove (109). The connecting rod (207) passes through the outside of the first medicine tube (101).
7. The liquid medicine propulsion assembly for an injection pen according to claim 6, characterized in that: A movable tube (302) is fixedly provided at one end of the connecting rod (207), and the movable tube (302) is sleeved on the circumferential side of the first medicine tube (101). A limiting groove is provided at one end of the movable tube (302) close to the pull plate (206), and a plurality of elastic reset members (303) are fixedly provided in an annular direction on one side of the limiting ring (301), and one end of the elastic reset member (303) is fixedly connected to the movable tube (302).
8. The liquid medicine propulsion assembly for an injection pen according to claim 7, characterized in that: Two limiting rods (304) are fixedly provided on one side of the limiting ring (301) close to the elastic return member (303), and the limiting rods (304) are slidably engaged with the limiting grooves. An electromagnet is installed on one side of the limiting ring (301) close to the elastic return member (303), and a permanent magnet is installed on one end of the moving tube (302), and the electromagnet and the permanent magnet are magnetically attracted to each other.