Follicle-stimulating hormone injector

Abstract

The invention provides a follicle-stimulating hormone injector. The follicle-stimulating hormone injector comprises a pen body, a refill frame, a disposable needle head, a shielding cylinder and a driving mechanism. The refill frame is coaxially connected with the pen body, and the refill frame is used for placing a refill for injection. The disposable needle head is used for being communicated with the refill for injection and located on the side, away from the pen body, of the refill frame. The shielding cylinder is arranged outside the refill frame in a sleeving mode, and the shielding cylinder can move in the axial direction of the refill frame and then cover the disposable needle head. The shielding cylinder can be arranged in a hollowed-out mode. The driving mechanism is used for driving the shielding cylinder to move. The shielding cylinder is driven by the driving mechanism to move on the refill frame, and after the shielding cylinder covers the disposable needle head, the disposable needle head can be prevented 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 injector. Background Art

[0002] The FSH syringe is similar to the insulin pen and can be used repeatedly for a long time. A new disposable needle needs to be installed each time it is used to meet hygiene standards.

[0003] In practice, it is found that medical staff first install a disposable needle on the FSH syringe. However, medical staff have other matters to deal with before and after injecting patients, and the disposable needle installed on the FSH syringe cannot be used in time and is discarded. When medical staff take the FSH syringe again, they may be pricked by the disposable needle. 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 refill holder, coaxially connected to the pen body, for placing the refill for injection;

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

[0009] A shielding tube, which is sleeved outside the refill frame and can move axially along the refill frame 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 being threadedly connected to the end of the injection pen core, and having 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; one end of the driving block away from its rotation center can be swung from the outside of the shielding tube through the installation window and enter into the shielding tube; the shielding tube can be rotated on the refill holder; one end of the driving block away from its rotation center can be rotated around the outer circumference of the needle bolt and can abut against the stop block.

[0015] Preferably, it also includes:

[0016] A limiting ring is sleeved on the outer periphery of the end of the pen core frame away from the pen body and is loosely matched with the inner wall of the shielding tube; and

[0017] A retaining ring is coaxially connected to the inner wall of the shielding tube, the retaining ring 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 gap-matched with the outer wall of the pen core frame.

[0018] Preferably, the outer diameter of the refill frame is greater 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 frame;

[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, which is sleeved outside the refill frame, and whose two ends are respectively connected to the first connecting ring and the second connecting ring;

[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 gaps on both sides of one end facing the pen body; the refill holder is provided with axially extending observation windows on both sides; the axially extending observation windows correspond to the observation windows.

[0026] Preferably, the driving mechanism further comprises:

[0027] A second spring is sleeved outside the pen core frame, and two ends of the second spring are respectively 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 tube 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; a ring-shaped elastic rope is arranged 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, the shielding tube is driven to move on the pen core frame by a driving mechanism, and after the shielding tube covers the disposable needle, it can prevent the disposable needle from stabbing medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0035] Figure 1 is a stereoscopic diagram of a follicle stimulating hormone injector according to an 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 of

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

[0040] Figure 6 for Figure 4 An 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] Fig. 9 for Figure 8 Another stereogram of .

[0044] Reference numerals:

[0045] 10. Pen body;

[0046] 20. Pen core 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. strip connecting block; 512. slide groove; 52. first connecting ring; 53. second connecting ring; 54. first spring; 55. clearance gap; 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 are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0052] It should be noted that, unless otherwise specified, the technical terms 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 the present 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 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 referred device or element 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 technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0055] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature 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. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in 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 refill holder 20 is coaxially connected to the pen body 10, and is used to place the refill for injection. The pen body 10 and the refill holder 20 can refer to the structure of the insulin pen in the prior art. Specifically, the refill holder 20 is cylindrical, and the refill holder 20 contains a mounting cavity for placing the refill, and observation windows 21 along the axial direction are provided on the two side walls of the refill. After the refill is placed in the mounting cavity, one end of the refill extends from the end of the refill holder 20 away from the pen body 10.

[0059] The disposable needle 30 is used to communicate with the injection pen core, and the disposable needle 30 is located on the side of the pen core frame 20 away from the pen body 10. The shielding tube 40 is sleeved outside the pen core frame 20, and the shielding tube 40 can cover the disposable needle 30 after moving along the axial direction of the pen core frame 20. The shielding tube 40 can be hollowed out. The driving mechanism 50 is used to drive the shielding tube 40 to move.

[0060] In this embodiment, the shielding tube 40 is driven to move on the refill holder 20 by the driving mechanism 50 . After the shielding tube 40 covers the disposable needle 30 , the disposable needle 30 can be prevented 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 used to be threadedly connected to the end of the injection pen core, and a stopper 33 is connected to the outer peripheral wall of the needle plug 31. The needle plug 31 is a shell with an outer contour of a truncated cone. The needle stem 32 is connected to the needle plug 31. The end of the needle stem 32 away from the needle plug 31 is a needle tip.

[0063] A through-mounting window 41 is provided on the shielding tube 40. A driving block 42 is rotatably arranged 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 pen core frame 20; the end of the driving block 42 away from its rotation center can be abutted against the stopper 33 after rotating around the outer circumference of the pintle 31. When the driving block 42 moves on the pen core frame 20 following the shielding tube 40, since the outer diameter of the pen core frame 20 is larger than the outer diameter of the pintle 31, when the driving block 42 passes the outer wall of the pen core frame 20, the end of the driving block 42 can be pushed out of the mounting window 41 by the outer wall of the pen core frame 20.

[0064] In this embodiment, the disposable needle 30 is connected to the end of the injection pen core through a thread. After the injection is completed, the disposable needle 30 needs to be removed, and medical personnel are easily stabbed by the needle when removing the disposable needle 30. By rotating the shielding cylinder 40, the driving block 42 swings into the shielding cylinder 40 and abuts against the stopper 33. The shielding cylinder 40 rotates to drive the disposable needle 30 to rotate, so that the disposable needle 30 can be removed without contacting the disposable needle 30, avoiding being stabbed by the disposable needle 30.

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

[0066] The 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 the limiting ring 60 is in gap 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 the retaining ring 61 is located between the limiting ring 60 and the pen body 10, and the retaining ring 61 can be abutted against the limiting ring 60, and the retaining ring 61 is in gap with the outer wall of the pen core frame 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 limit 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 greater than the outer diameter of the pintle 31. When the end of the driving block 42 is located in the shielding tube 40, the end of the driving block 42 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 matched with the dovetail groove.

[0072] The second connecting ring 53 is coaxially rotatably arranged on the inner wall of the driving cylinder 51. Specifically, the inner walls of the driving cylinder 51 are connected with strip-shaped connecting blocks 511 along the axial direction thereof on both sides. Dovetail grooves are arranged at the ends of the two strip-shaped connecting blocks 511, and an annular dovetail block is arranged on the second connecting ring 53, and the dovetail block and the dovetail groove are slidably matched. In addition, sliders 22 are arranged on the outer walls of both sides of the refill frame 20, and a slide groove 512 is arranged on the strip-shaped connecting block 511 along the length direction thereof, and the slide groove 512 is slidably matched with the slider 22, so that the driving cylinder 51 can slide axially outside the refill frame 20.

[0073] The first spring 54 is sleeved outside the refill frame 20, and the two ends of the first spring 54 are respectively connected to the first connecting ring 52 and the second connecting ring 53. The driving cylinder 51 can move along the axial direction of the refill frame 20 to drive the shielding cylinder 40 to move through the first spring 54. In addition, the shielding cylinder 40 can also rotate relative to the driving cylinder 51. The end of the driving cylinder 51 away from the pen body 10 can cover the installation window 41.

[0074] In this embodiment, Figure 3 When installing the disposable needle 30, the driving cylinder 51 slides toward the pen body 10, the first spring 54 is stretched, and the driving cylinder 51 moves to expose the shielded installation window 41. Then the shielding cylinder 40 is pulled by the first spring 54, and the driving block 42 passes the end of the refill frame 20 and abuts against the outer wall of the refill frame 20. The driving 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 refill frame 20 is exposed, and the disposable needle 30 is rotated and installed at the end of the refill.

[0075] After that, the driving cylinder 51 moves to the left, and the first spring 54 first drives the shielding cylinder 40 to move to the left and then covers the disposable needle 30, and then the retaining ring 61 on the inner wall of the shielding cylinder 40 abuts against the limiting ring 60 at the end of the refill, and the shielding cylinder 40 stops moving; and as the driving cylinder 51 moves further to the left, the driving cylinder 51 gradually covers the installation window 41, at this time, the inward end of the driving block 42 abuts against the outer wall of the needle bolt 31, and the other end of the driving block 42 abuts against the inner wall of the driving cylinder 51, and the driving block 42 cooperates with the driving cylinder 51 and the end of the refill frame 20 to form a lock, so that the shielding cylinder 40 cannot move to the right, that is, the shielding cylinder 40 can keep shielding the disposable needle 30 to prevent medical staff from being stabbed. Specifically, when the driving cylinder 51 covers the installation window 41, when the shielding cylinder 40 moves to the right, the driving block 42 abuts against the end of the refill frame 20 and the inner wall of the driving cylinder 51, so that the shielding cylinder 40 cannot move further to the left.

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

[0077] In one embodiment, the driving cylinder 51 has two sides of one end facing the pen body 10 with clearance notches 55 extending along its axial direction; the refill holder 20 has two sides with observation windows 21 extending along its axial direction; the clearance notches 55 correspond to the observation windows 21 .

[0078] In this embodiment, the pen core is installed in the pen core frame 20, and the amount of the remaining liquid medicine in the pen core can be observed through the observation window 21, which is convenient for subsequent adjustment of the position of the mechanism for pushing injection in the pen body 10 to abut against the piston of the pen core.

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

[0081] In this embodiment, by pressing the handle 58 with one hand, the second driving rod 59 can be used to drive the first driving rod 57 to move so that the driving cylinder 51 is close to the pen body 10, and the second spring 56 is compressed. After releasing the hand pressing the handle 58, the second spring 56 is reset, driving the driving cylinder 51 and the shielding cylinder 40 away from the pen body 10. In this syringe, the thumb is used to press the button at the end of the pen body 10 to inject by holding the handle 58 with one hand, which is more convenient.

[0082] In one embodiment, a mounting groove 43 is formed 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 rope 44 is disposed in the mounting groove 43. A mounting hole 45 is formed on the driving block 42. The elastic rope 44 passes through the mounting hole 45.

[0083] In this embodiment, once the drive cylinder 51 no longer covers the installation window 41, the drive block 42 will move out of the installation window 41 under the action of the elastic rope 44, and part of the drive block 42 is located outside the shielding cylinder 40. This prevents the drive block 42 from entering the observation window 21 of the cartridge holder 20 during use of the syringe, and does not cause jamming.

[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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate 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 specification 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) and used for placing a refill for injection; A disposable needle (30) for communicating with the injection pen core and located on a side of the pen core holder (20) away from the pen body (10); A shielding tube (40) is sleeved outside the refill frame (20) and can be moved axially along the refill frame (20) to cover the disposable needle (30); and A driving mechanism (50) is used for driving the shielding tube (40) to move.

2. A follicle stimulating hormone syringe as claimed in claim 1, characterized in that: The disposable needle (30) comprises: A needle plug (31) is used for being threadedly connected to 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 penetrating installation window (41); a driving block (42) is rotatably arranged in the installation 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 installation window (41) and then enter into the shielding tube (40); the shielding tube can rotate on the refill holder (20); and an 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).

3. A follicle stimulating hormone syringe as claimed in claim 2, characterized in that: 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 matched 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 gap-matched with the outer wall of the pen core frame (20).

4. A follicle stimulating hormone syringe as claimed in claim 3, characterized in that: The outer diameter of the refill frame (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 frame (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), and two ends of the first spring are 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).

5. A follicle stimulating hormone syringe as claimed in claim 4, characterized in that: The driving cylinder (51) is provided with clearance notches (55) extending along its axial direction on both sides of one end facing the pen body (10); the pen core frame (20) is provided with observation windows (21) extending along its axial direction on both sides; the clearance notches (55) correspond to the observation windows (21).

6. A follicle stimulating hormone syringe as claimed in claim 5, characterized in that: The driving mechanism (50) further comprises: 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), the end of which is hinged 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).

7. A follicle stimulating hormone syringe as claimed in claim 6, characterized in that: The shielding tube (40) is provided with a mounting groove (43) on its outer periphery; an annular elastic rope (44) is arranged 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).

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