A follicle-stimulating hormone syringe

Abstract

The present invention provides a follicle-stimulating hormone syringe, comprising a pen body, a refill holder, a disposable needle, a shielding tube, and a driving mechanism. The refill holder is coaxially connected to the pen body, and is used to place the injection refill. The disposable needle is used to communicate with the injection refill, and is located on the side of the refill holder away from the pen body. The shielding tube is sleeved outside the refill holder, and the shielding tube can cover the disposable needle after moving axially along the refill holder. The shielding tube can be a hollow setting. The driving mechanism is used to drive the shielding tube to move. The present invention drives the shielding tube to move on the refill holder through the driving mechanism. After the shielding tube covers the disposable needle, it can prevent the disposable needle from stabbing medical staff.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a follicle-stimulating hormone syringe. Background Art

[0002] The FSH syringe is similar to an insulin pen and can be used repeatedly over a long period of time. A new disposable needle must be installed each time to meet hygiene standards.

[0003] In practice, it was found that medical staff first installed a disposable needle on the FSH syringe. However, they had other matters to attend to before and after the injection, and the disposable needle installed on the FSH syringe was not used and discarded in time. Subsequently, medical staff were often pricked by the disposable needle when they picked up the FSH syringe. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a follicle-stimulating hormone syringe, which can solve or at least alleviate one or more of the above-mentioned problems and other problems in the prior art.

[0005] The present invention provides a follicle-stimulating hormone syringe, comprising:

[0006] Pen body;

[0007] A cartridge holder, coaxially connected to the pen body, for placing the injection cartridge;

[0008] A disposable needle, used to communicate with the injection pen cartridge, located on the side of the cartridge holder away from the pen body;

[0009] a shielding cylinder, which is sleeved outside the cartridge holder and can be moved axially along the cartridge holder to cover the disposable needle; and

[0010] The driving mechanism is used for driving the shielding tube to move.

[0011] Preferably, the disposable needle comprises:

[0012] A needle plug, used for threaded connection with the end of the injection pen core, with a stopper connected to its outer peripheral wall; and

[0013] a needle stem connected to the needle plug;

[0014] A penetrating installation window is provided on the shielding tube; a driving block is rotatably arranged in the installation window; an end of the driving block away from its rotation center can swing from the outside of the shielding tube through the installation window and enter the shielding tube; the shielding tube can be rotated on the pen core holder; an end of the driving block away from its rotation center can rotate around the outer circumference of the needle bolt and then abut against the stop block.

[0015] Preferably, it also includes:

[0016] a limiting ring, sleeved on the outer periphery of the end of the pen core holder away from the pen body, and loosely fitted with the inner wall of the shielding tube; and

[0017] A retaining ring is coaxially connected to the inner wall of the shielding tube, and is located between the limiting ring and the pen body. The retaining ring can be abutted against the limiting ring, and the retaining ring is loosely matched with the outer wall of the pen core frame.

[0018] Preferably, the outer diameter of the refill holder is larger than the outer diameter of the pintle;

[0019] The driving mechanism comprises:

[0020] A driving cylinder is sleeved outside the shielding cylinder and can slide along the axial direction of the pen core holder;

[0021] a first connecting ring, coaxially rotatably connected to the end of the shielding tube facing the pen body;

[0022] A second connecting ring is coaxially rotatably disposed on the inner wall of the driving cylinder; and

[0023] A first spring is sleeved outside the refill holder, with two ends connected to the first connecting ring and the second connecting ring respectively;

[0024] One end of the driving cylinder away from the pen body can cover the installation window.

[0025] Preferably, the driving cylinder is provided with axially extending recesses on both sides of one end thereof facing the pen body; and the refill holder is provided with axially extending observation windows on both sides thereof; the axially extending observation windows correspond to the observation windows.

[0026] Preferably, the driving mechanism further comprises:

[0027] a second spring, sleeved outside the refill frame, with two ends of the second spring respectively abutting against the driving cylinder and the pen body;

[0028] a first driving rod, an end of which is connected to an end of the driving cylinder close to the pen body;

[0029] a handle, the end of which is hinged to the pen body; and

[0030] A second driving rod, one end of which is hinged to the corresponding handle, and the other end of which is hinged to an end of the first driving rod away from the driving cylinder.

[0031] Preferably, a mounting groove is provided on the outer circumference of the shielding tube; an annular elastic rope is provided in the mounting groove; a mounting hole is provided on the driving block; and the elastic rope passes through the mounting hole.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] In the technology of the present invention, a driving mechanism drives the shielding tube to move on the refill holder. After the shielding tube covers the disposable needle, medical staff can be prevented from being stabbed by the disposable needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0035] Figure 1 is a perspective view of a follicle-stimulating hormone syringe according to one embodiment of the present invention;

[0036] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0037] Figure 3 for Figure 2 The enlarged schematic diagram of S in the middle;

[0038] Figure 4 for Figure 1 Exploded diagram;

[0039] Figure 5 for Figure 4 An enlarged schematic diagram of the disposable needle in the middle;

[0040] Figure 6 for Figure 4 Enlarged schematic diagram of the middle drive cylinder;

[0041] Figure 7 for Figure 4 An enlarged schematic diagram of the first spring in the middle;

[0042] Figure 8 for Figure 1 A perspective view of the middle shielding cylinder;

[0043] Figure 9 for Figure 8 Another stereogram of .

[0044] Reference numerals:

[0045] 10. Pen body;

[0046] 20. Pen refill holder; 21. Observation window; 22. Slider;

[0047] 30. Disposable needle; 31. Needle plug; 32. Needle stem; 33. Stopper;

[0048] 40. Shielding tube; 41. Mounting window; 42. Driving block; 43. Mounting slot; 44. Elastic rope; 45. Mounting hole;

[0049] 50. Driving mechanism; 51. Driving cylinder; 511. Bar-shaped connecting block; 512. Slide groove; 52. First connecting ring; 53. Second connecting ring; 54. First spring; 55. Notch; 56. Second spring; 57. First driving rod; 58. Handle; 59. Second driving rod;

[0050] 60. Limiting ring; 61. Retaining ring. DETAILED DESCRIPTION

[0051] The following embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0052] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0053] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the present invention, "plurality" means more than two, unless otherwise specifically defined.

[0055] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0056] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0057] See also Figures 1 to 9 This embodiment provides a follicle-stimulating hormone syringe, including a pen body 10, a pen core frame 20, a disposable needle 30, a shielding tube 40 and a driving mechanism 50.

[0058] The cartridge holder 20 is coaxially connected to the pen body 10 and is used to hold the injection cartridge. The pen body 10 and cartridge holder 20 can be similar in structure to conventional insulin pens. Specifically, the cartridge holder 20 is cylindrical and contains a mounting cavity for the cartridge. Observation windows 21 are defined along the two axially oriented walls of the cartridge. Once the cartridge is placed in the mounting cavity, one end of the cartridge extends from the end of the cartridge holder 20 facing away from the pen body 10.

[0059] The disposable needle 30 is used to communicate with the injection cartridge and is located on the side of the cartridge holder 20 away from the pen body 10. A shielding tube 40 is sleeved onto the cartridge holder 20 and can move axially along the cartridge holder 20 to cover the disposable needle 30. The shielding tube 40 may be hollow. A drive mechanism 50 is used to drive the shielding tube 40.

[0060] In this embodiment, the shielding tube 40 is driven by the driving mechanism 50 to move on the refill holder 20. After the shielding tube 40 covers the disposable needle 30, it can prevent the disposable needle 30 from stabbing medical staff.

[0061] In one embodiment, the disposable needle 30 includes a needle plug 31 and a needle barrel 32 .

[0062] The needle plug 31 is threadedly connected to the end of the injection cartridge. A stopper 33 is attached to the outer wall of the needle plug 31. The needle plug 31 is a shell with an outer contour of a truncated cone. A needle stem 32 is connected to the needle plug 31. The end of the needle stem 32, away from the needle plug 31, forms the needle tip.

[0063] A through-mounted mounting window 41 is provided on the shielding tube 40. A driving block 42 is rotatably provided in the mounting window 41. The rotation center of the driving block 42 is located on the side of the mounting window 41 close to the pen body 10. The end of the driving block 42 away from its rotation center can swing from the outside of the shielding tube 40 through the mounting window 41 and enter the shielding tube 40; the shielding tube can rotate on the refill rack 20; the end of the driving block 42 away from its rotation center can rotate around the outer circumference of the pintle 31 and then abut against the stopper 33. When the driving block 42 moves on the refill rack 20 following the shielding tube 40, since the outer diameter of the refill rack 20 is larger than the outer diameter of the pintle 31, when the driving block 42 passes the outer wall of the refill rack 20, the end of the driving block 42 can be pushed out of the mounting window 41 by the outer wall of the refill rack 20.

[0064] In this embodiment, the disposable needle 30 is connected to the end of the injection cartridge via a threaded connection. After the injection is completed, the disposable needle 30 needs to be removed, and medical personnel are prone to needle pricks when removing the disposable needle 30. However, by rotating the shielding cylinder 40, the driving block 42 swings into the shielding cylinder 40 and abuts against the stopper 33. The rotation of the shielding cylinder 40 drives the disposable needle 30 as well, allowing the disposable needle 30 to be removed without contacting the disposable needle 30, thus preventing needle pricks.

[0065] In one embodiment, the follicle-stimulating hormone syringe further includes a limiting ring 60 and a retaining ring 61 .

[0066] The retaining ring 60 is sleeved around the outer circumference of the end of the refill holder 20 away from the pen body 10, and has a clearance fit with the inner wall of the shielding tube 40. The retaining ring 61 is coaxially connected to the inner wall of the shielding tube 40, and is located between the retaining ring 60 and the pen body 10. The retaining ring 61 can abut against the retaining ring 60, and has a clearance fit with the outer wall of the refill holder 20.

[0067] In this embodiment, the shielding tube 40 slides and rotates on the refill frame 20 through the retaining ring 61 , and the limiting ring 60 can restrict the shielding tube 40 through the retaining ring 61 to prevent the shielding tube 40 from being separated from the refill frame 20 .

[0068] In one embodiment, the outer diameter of the cartridge holder 20 is larger than the outer diameter of the pintle 31. When the end of the driving block 42 is located in the shielding tube 40, it can abut against the end of the cartridge holder 20.

[0069] The driving mechanism 50 includes a driving cylinder 51 , a first connecting ring 52 , a second connecting ring 53 and a first spring 54 .

[0070] The driving cylinder 51 is sleeved outside the shielding cylinder 40, and the driving cylinder 51 can slide along the axial direction of the refill frame 20. The driving cylinder 51 can slide along the axial direction of the refill frame 20 manually or in other ways.

[0071] The first connecting ring 52 is coaxially rotatably connected to the end of the shielding tube 40 facing the pen body 10. Specifically, an annular dovetail groove is provided at the end of the shielding tube 40, and a dovetail block is also provided on one side of the first connecting ring 52, and the dovetail block is slidably engaged with the dovetail groove.

[0072] The second connecting ring 53 is coaxially mounted on the inner wall of the drive cylinder 51. Specifically, strip-shaped connecting blocks 511 are connected to each side of the inner wall of the drive cylinder 51 along its axial direction. Dovetail grooves are provided at the ends of the two strip-shaped connecting blocks 511, and an annular dovetail block is provided on the second connecting ring 53, which slidably engages with the dovetail grooves. Furthermore, sliders 22 are provided on each side of the outer wall of the refill holder 20. Slide grooves 512 are provided along the length of the strip-shaped connecting blocks 511, which slidably engage with the sliders 22, allowing the drive cylinder 51 to slide axially outside the refill holder 20.

[0073] A first spring 54 is mounted outside the cartridge holder 20, with its ends connected to the first connecting ring 52 and the second connecting ring 53, respectively. The first spring 54 allows the drive cylinder 51 to move axially along the cartridge holder 20, driving the shielding cylinder 40. Furthermore, the shielding cylinder 40 can rotate relative to the drive cylinder 51. The end of the drive cylinder 51 away from the pen body 10 covers the mounting window 41.

[0074] In this embodiment, Figure 3 When installing the disposable needle 30, the drive cylinder 51 slides toward the pen body 10, stretching the first spring 54. As the drive cylinder 51 moves, the obstructed installation window 41 is exposed. The shielding cylinder 40 is then pulled by the first spring 54, and the drive block 42 passes the end of the refill holder 20 and abuts against the outer wall of the holder 20. The drive block 42 partially extends from the installation window 41 to the outside of the shielding cylinder 40 until the end of the refill in the holder 20 is exposed. The disposable needle 30 is then rotated and installed at the end of the refill.

[0075] After that, the drive cylinder 51 moves leftward, and the first spring 54 first drives the shield cylinder 40 to move leftward to cover the disposable needle 30. Then, the retaining ring 61 on the inner wall of the shield cylinder 40 abuts against the limit ring 60 at the end of the refill, and the shield cylinder 40 stops moving. As the drive cylinder 51 moves further leftward, the drive cylinder 51 gradually covers the installation window 41. At this time, the inward end of the drive block 42 abuts against the outer wall of the needle bolt 31, and the other end of the drive block 42 abuts against the inner wall of the drive cylinder 51. The drive block 42 cooperates with the drive cylinder 51 and the end of the refill holder 20 to form a lock, preventing the shield cylinder 40 from moving rightward. That is, the shield cylinder 40 can continue to cover the disposable needle 30, preventing medical staff from being stabbed. Specifically, when the drive cylinder 51 covers the installation window 41, when the shield cylinder 40 moves rightward, the drive block 42 abuts against the end of the refill holder 20 and the inner wall of the drive cylinder 51, preventing the shield cylinder 40 from moving further leftward.

[0076] Finally, by rotating the shielding tube 40 , the driving block 42 is driven to rotate. The driving block 42 abuts against the stopper 33 on the needle bolt 31 and can drive the disposable needle 30 to be separated from the pen core.

[0077] In one embodiment, the driving cylinder 51 is provided with axially extending recesses 55 on both sides of one end thereof facing the pen body 10 ; the refill holder 20 is provided with axially extending observation windows 21 on both sides thereof; the recesses 55 correspond to the observation windows 21 .

[0078] In this embodiment, the refill is installed in the refill holder 20, and the amount of remaining liquid in the refill can be observed through the observation window 21, which facilitates the subsequent adjustment of the position of the push injection mechanism in the pen body 10 to abut against the piston of the refill.

[0079] In one embodiment, the driving mechanism 50 further includes a second spring 56 , a first driving rod 57 , a handle 58 , and a second driving rod 59 .

[0080] The second spring 56 is sleeved on the outside of the pen core frame 20, and the two ends of the second spring 56 are respectively against the drive cylinder 51 and the pen body 10. The end of the first drive rod 57 is connected to the end of the drive cylinder 51 close to the pen body 10. Two first drive rods 57 can be provided, and the two first drive rods 57 are respectively located on both sides of the pen body 10. The end of the handle 58 is hinged to the pen body 10. One end of the second drive rod 59 is hinged to the corresponding handle 58, and the other end of the second drive rod 59 is hinged to the end of the first drive rod 57 away from the drive cylinder 51. A clearance opening is opened on the handle 58, and the end of the second drive rod 59 is located in the clearance opening. The angle between the second drive rod 59 and the handle 58 is an obtuse angle.

[0081] In this embodiment, by pressing the handle 58 with one hand, the second drive rod 59 drives the first drive rod 57, thereby moving the drive cylinder 51 toward the pen body 10. This compresses the second spring 56. When the hand pressing the handle 58 is released, the second spring 56 returns to its original position, driving the drive cylinder 51 and the shielding cylinder 40 away from the pen body 10. This syringe is conveniently used to inject by holding the handle 58 with one hand and using the thumb to press the button on the end of the pen body 10.

[0082] In one embodiment, a mounting groove 43 is defined on the outer periphery of the shielding tube 40. The mounting groove 43 is annular and communicates with the mounting window 41. An annular elastic cord 44 is disposed within the mounting groove 43. A mounting hole 45 is defined on the drive block 42, through which the elastic cord 44 passes.

[0083] In this embodiment, once the drive cylinder 51 no longer covers the mounting window 41, the elastic cord 44 causes the drive block 42 to move out of the mounting window 41, with a portion of the drive block 42 positioned outside the shielding cylinder 40. This prevents the drive block 42 from entering the viewing window 21 of the cartridge holder 20 during use, thereby preventing the syringe from becoming stuck.

[0084] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A follicle-stimulating hormone syringe, characterized in that: include: Pen body (10); A refill holder (20), coaxially connected to the pen body (10), for placing an injection refill; A disposable needle (30) for communicating with the injection pen cartridge, located on a side of the pen cartridge holder (20) away from the pen body (10); a shielding cylinder (40) which is sleeved outside the pen core frame (20) and can be moved axially along the pen core frame (20) to cover the disposable needle (30); and A driving mechanism (50) for driving the shielding cylinder (40) to move; The disposable needle (30) comprises: A needle plug (31) is used for threaded connection with the end of the injection pen core, and a stopper (33) is connected to the outer peripheral wall of the needle plug; and A needle stem (32) connected to the needle plug (31); The shielding tube (40) is provided with a through-mounting window (41); a driving block (42) is rotatably arranged in the mounting window (41); an end of the driving block (42) away from its rotation center can swing from the outside of the shielding tube (40) through the mounting window (41) and then enter the shielding tube (40); the shielding tube (40) can rotate on the refill holder (20); an end of the driving block (42) away from its rotation center can rotate around the outer periphery of the pintle (31) and then abut against the stopper (33); Also includes: A limiting ring (60) is sleeved on the outer periphery of the end of the pen core frame (20) away from the pen body (10) and is loosely fitted with the inner wall of the shielding tube (40); and A retaining ring (61) is coaxially connected to the inner wall of the shielding tube (40), the retaining ring (61) is located between the limiting ring (60) and the pen body (10), the retaining ring (61) can abut against the limiting ring (60), and the retaining ring (61) is clearance-matched with the outer wall of the pen core frame (20); The outer diameter of the refill holder (20) is greater than the outer diameter of the pintle (31); The driving mechanism (50) comprises: A driving cylinder (51) is sleeved outside the shielding cylinder (40) and can slide along the axial direction of the pen core holder (20); A first connecting ring (52) is coaxially rotatably connected to the end of the shielding tube (40) facing the pen body (10); A second connecting ring (53) is coaxially rotatably disposed on the inner wall of the driving cylinder (51); and A first spring (54) is sleeved outside the refill frame (20), with two ends respectively connected to the first connecting ring (52) and the second connecting ring (53); One end of the driving cylinder (51) away from the pen body (10) can cover the installation window (41); The driving cylinder (51) is provided with axially extending recesses (55) on both sides of one end thereof facing the pen body (10); and observation windows (21) are provided on both sides of the pen core holder (20) and extend along the axial direction thereof; the recesses (55) correspond to the observation windows (21).

2. The follicle-stimulating hormone syringe according to claim 1, characterized in that: The driving mechanism (50) further includes: A second spring (56) is sleeved outside the pen core frame (20), and two ends of the second spring (56) are respectively against the driving cylinder (51) and the pen body (10); A first driving rod (57), an end of which is connected to an end of the driving cylinder (51) close to the pen body (10); A handle (58) having an end hingedly connected to the pen body (10); and A second driving rod (59), one end of the second driving rod (59) is hinged to the corresponding handle (58), and the other end of the second driving rod (59) is hinged to an end of the first driving rod (57) away from the driving cylinder (51).

3. The follicle-stimulating hormone syringe according to claim 2, characterized in that: The shielding tube (40) is provided with a mounting groove (43) on its outer periphery; an annular elastic rope (44) is provided in the mounting groove (43); a mounting hole (45) is provided on the driving block (42); and the elastic rope (44) passes through the mounting hole (45).

Images