Pre-filled needle nest box fixing device

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a pre-filling needle nest box fixing device which comprises a nest box body, the fixing device is arranged below the nest box body, the fixing device is composed of an upper cover plate and a lower cover plate, and a fixing mechanism is arranged between the upper cover plate and the lower cover plate. According to the pre-filling needle nest box fixing device, the rotating shaft is rotated to drive the cam to rotate, the cam extrudes the protruding block to enable the movable plate to move, when the rod body makes contact with the positioning shaft, the covering face of the movable plate and the holes in the upper cover plate and the lower cover plate is the largest, and the pre-filling needle is fixed in the mode that the movable plate moves relative to the upper cover plate and the lower cover plate; the opening and closing section on the cam is arranged to be a plane, additional stability is provided in a fixed state, rotation and looseness of the cam are prevented, the fixing reliability is further enhanced, rotation of the cam can be effectively prevented, and the reliability of the device is improved. And the stability of the fixed state is ensured.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a pre-filled needle nest box fixing device. Background Technology

[0002] Prefilled syringes, also known as pre-filled injectors, are syringes that are pre-filled with medication and are widely used in the biopharmaceutical industry. They are designed to improve the safety, convenience, and accuracy of drug administration, while also reducing the risk of errors for healthcare professionals and patients.

[0003] Currently, in the prior art, for example, Chinese patent with publication number CN213724126U discloses a pre-filled syringe fixing device. This device, through a fixed structure design, uses a fixing pin to ensure that the axis of the pre-filled syringe is always perpendicular to the base plate, guaranteeing the quality of the next process, making it convenient and easy to operate, improving handling efficiency, and using an O-ring to prevent the risk of scratches and improve yield. However, the fixing device is fitted onto the pin with an interference fit, and this structure is difficult to adapt to pre-filled needles of different sizes, resulting in a limited range of applications. In view of this, we propose a pre-filled needle nest box fixing device. Utility Model Content

[0004] The main objective of this invention is to provide a pre-filled needle box fixing device that can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model proposes a pre-filled needle nest box fixing device, comprising a nest box body, a fixing device provided below the nest box body, the fixing device consisting of an upper cover plate and a lower cover plate, and a fixing mechanism provided between the upper cover plate and the lower cover plate, the fixing mechanism comprising:

[0006] Side plate, wherein the side plate is provided with a sliding groove;

[0007] The second baffle has a slot.

[0008] A first baffle has a circular groove in the middle, and a cam is provided inside the circular groove. The cam has an opening and closing section.

[0009] The movable plate has a slot and is slidably connected to the slide groove to improve the stability of the movable plate's movement. A protrusion is fixedly connected to the outer wall of one end of the movable plate, and a sliding shaft is fixedly connected to the outer wall of the other end of the movable plate. A spring is fixedly connected to the outer wall of the sliding shaft.

[0010] Preferably, there are two sets of side plates, which are symmetrically distributed on both sides of the lower cover plate.

[0011] Preferably, the slots are provided in multiple sets, and the multiple sets of slots are evenly distributed on the outer wall of the second baffle.

[0012] Preferably, the sliding shaft is provided in multiple sets, and the multiple sets of sliding shafts are evenly distributed on the outer wall of the movable plate, and the multiple sets of sliding shafts correspond one-to-one with the slot.

[0013] Preferably, the cam is penetrated by a rotating shaft and fixedly connected to the rotating shaft, the rotating shaft penetrates the upper cover plate and the lower cover plate and is rotatably connected to the upper cover plate and the lower cover plate, and the rotating shaft is penetrated by a rod and fixedly connected to the rod.

[0014] Preferably, the inner wall of the lower cover plate is fixedly connected with a pin for fixing the upper cover, side plate, first baffle and second baffle. The outer wall of the lower cover plate is fixedly connected with a positioning shaft. There are two sets of positioning shafts, which are symmetrically distributed on both sides of the rotating shaft.

[0015] This utility model provides a pre-filled needle box fixing device. It has the following beneficial effects:

[0016] (1) The pre-filled needle box fixing device drives the cam to rotate by rotating the rotating shaft. The cam squeezes the protrusion to make the movable plate move. When the rod contacts the positioning shaft, the hole coverage of the movable plate and the upper and lower cover plates is the largest. The device fixes the pre-filled needle by moving the movable plate relative to the upper and lower cover plates, so that the device can be used for more specifications of pre-filled needles, which greatly improves the applicability of the device.

[0017] (2) The pre-filled needle box fixing device, wherein the opening and closing section on the cam is set as a plane, which provides additional stability in the fixed state, prevents the cam from rotating and loosening, further enhances the reliability of fixing, effectively prevents the cam from rotating, and ensures the stability of the fixed state. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the internal fixing mechanism of this utility model;

[0021] Figure 3 This is a partial three-dimensional structural diagram of the present utility model;

[0022] Figure 4This utility model Figure 2 Schematic diagram of structure A in the middle;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the cam of this utility model.

[0024] Explanation of icon numbers:

[0025] 1. Nest box body; 2. Top cover plate; 3. Bottom cover plate; 31. Pin; 32. Positioning shaft; 41. Side plate; 411. Slide groove; 42. Second baffle; 421. Groove; 43. First baffle; 431. Cam; 432. Opening / closing section; 433. Rotating shaft; 434. Rod; 44. Movable plate; 441. Sliding shaft; 442. Spring; 443. Slot; 444. Protrusion.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 This utility model proposes a pre-filled brood box fixing device, including a brood box body 1. A fixing device is provided below the brood box body 1. The fixing device consists of an upper cover plate 2 and a lower cover plate 3. A pin 31 is fixedly connected to the inner wall of the lower cover plate 3. A positioning shaft 32 is fixedly connected to the outer wall of the lower cover plate 3. There are two sets of positioning shafts 32. The two sets of positioning shafts 32 are symmetrically distributed on both sides of the rotating shaft 433. A fixing mechanism is provided between the upper cover plate 2 and the lower cover plate 3.

[0029] In this embodiment of the utility model, in order to fix the nest box body 1, the fixing mechanism specifically includes a side plate 41, the side plate 41 is provided with a sliding groove 411, there are two sets of side plates 41, the two sets of side plates 41 are symmetrically distributed on both sides of the lower cover plate 3, the second baffle 42 is provided with a slot 421, there are multiple sets of slots 421, the multiple sets of slots 421 are evenly distributed on the outer wall of the second baffle 42, the first baffle 43 is provided with a circular groove in the middle, the circular groove is provided with a cam 431, the cam 431 is provided with an opening and closing section 432, the opening and closing section 432 is designed as a plane, which can effectively prevent the cam 431 from rotating, ensuring the stability of the fixed state, and the movable plate 44 is provided with a slot 443.

[0030] Furthermore, the movable plate 44 is slidably connected to the slide groove 411. A protrusion 444 is fixedly connected to the outer wall of one end of the movable plate 44, and a sliding shaft 441 is fixedly connected to the outer wall of the other end of the movable plate 44. A spring 442 is fixedly connected to the outer wall of the sliding shaft 441. Multiple sets of sliding shafts 441 are provided, and the multiple sets of sliding shafts 441 are evenly distributed on the outer wall of the movable plate 44. The multiple sets of sliding shafts 441 correspond one-to-one with the groove 421. The sliding shafts 441 and the groove 421 cooperate with each other to improve the stability of the sliding shaft 441 when sliding.

[0031] Furthermore, the cam 431 is penetrated by and fixedly connected to the rotating shaft 433, the rotating shaft 433 penetrates the upper cover plate 2 and the lower cover plate 3 and is rotatably connected to the upper cover plate 2 and the lower cover plate 3, and the rotating shaft 433 is penetrated by the rod 434 and is fixedly connected to the rod 434.

[0032] In this invention, during use, rotating the rotating shaft 433 drives the cam 431 to rotate. During this process, the cam 431 will press against the protrusion 444. At this time, the movable plate 44, which is fixedly connected to the protrusion 444, moves. When the movable plate 44 moves, it will press against the spring 442 and cause the spring 442 to undergo elastic deformation. When the rod 434 on the rotating shaft 433 contacts the positioning shaft 32, it stops rotating. At this time, the coverage area of ​​the holes on the movable plate 44, the upper cover plate 2, and the lower cover plate 3 is at its maximum. At the same time, the cam 431 is in the opening and closing section 432. The opening and closing section 432 is set as a plane to prevent the cam 431 from rotating on its own. Then, the pre-filling needles are placed in the holes of the nest box body 1. Then, the nest box body 1 is placed on the upper cover plate 2. At this time, rotating the rotating shaft 433 in the opposite direction drives the cam 431 to rotate and disengage from the opening and closing section 432. At this time, the elastic force of the spring 442 can push the movable plate 44 through the sliding shaft 441 to fix all the pre-filling needles.

[0033] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pre-filled needle-shaped nest box fixing device, comprising a nest box body (1), characterized in that: A fixing device is provided below the nest box body (1). The fixing device consists of an upper cover plate (2) and a lower cover plate (3). A fixing mechanism is provided between the upper cover plate (2) and the lower cover plate (3). The fixing mechanism includes: Side plate (41), wherein the side plate (41) is provided with a sliding groove (411); The second baffle (42) has a slot (421); The first baffle (43) has a circular groove in the middle, and a cam (431) is provided inside the circular groove. The cam (431) has an opening and closing section (432). The movable plate (44) has a slot (443) and is slidably connected to the slide groove (411). A protrusion (444) is fixedly connected to the outer wall of one end of the movable plate (44), and a sliding shaft (441) is fixedly connected to the outer wall of the other end of the movable plate (44). A spring (442) is fixedly connected to the outer wall of the sliding shaft (441).

2. The pre-filled needle box fixing device according to claim 1, characterized in that: The side plate (41) is provided in two sets, and the two sets of side plates (41) are symmetrically distributed on both sides of the lower cover plate (3).

3. The pre-filled needle box fixing device according to claim 1, characterized in that: The slot (421) is provided in multiple sets, and the multiple sets of slots (421) are evenly distributed on the outer wall of the second baffle (42).

4. The pre-filled needle box fixing device according to claim 1, characterized in that: The sliding shaft (441) is provided in multiple sets, and the multiple sets of sliding shafts (441) are evenly distributed on the outer wall of the movable plate (44), and the multiple sets of sliding shafts (441) correspond one-to-one with the slot (421).

5. The pre-filled needle box fixing device according to claim 1, characterized in that: The cam (431) is penetrated by a rotating shaft (433) and is fixedly connected to the rotating shaft (433). The rotating shaft (433) penetrates the upper cover plate (2) and the lower cover plate (3) and is rotatably connected to the upper cover plate (2) and the lower cover plate (3). The rotating shaft (433) is penetrated by a rod (434) and is fixedly connected to the rod (434).

6. The pre-filled needle box fixing device according to claim 1, characterized in that: The inner wall of the lower cover plate (3) is fixedly connected with a pin (31), and the outer wall of the lower cover plate (3) is fixedly connected with a positioning shaft (32). There are two sets of positioning shafts (32), and the two sets of positioning shafts (32) are symmetrically distributed on both sides of the rotating shaft (433).

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