Automatic needle taking device for insulin pen

Abstract

The utility model relates to an insulin pen automatic needle taking device which comprises a separation box, an insertion hole is formed in the upper end face of the separation box, a needle taking unit is installed in the separation box, the needle taking unit comprises an installation box fixedly installed on the bottom face of the separation box and a gear ring rotationally connected into the separation box, and a driving motor is installed in the installation box; the output end of the driving motor penetrates into the separation box and is in meshed connection with a gear ring through a gear, two connecting rods are arranged in the gear ring, two symmetrically-distributed clamping rings are installed on the two connecting rods, stress rods are rotationally connected to the bottoms of the clamping rings, and a clamping unit and a pressure applying unit are installed in the separation box; and the storage box is in threaded connection with the lower part of the separation box, is communicated with the interior of the separation box and is used for receiving the injection needle separated from the insulin pen body. According to the device, the injection needles can be screwed off from the end of the insulin pen body and fall into the storage box to be collected, automatic needle taking can be achieved only through simple manual assistance, use is convenient, and risks are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of insulin injection pens, in particular to the technology of removing needles from insulin injection pens, and specifically is an automatic needle remover for insulin pens. Background Art

[0002] The insulin injection pen is an injection tool designed specifically for diabetic patients. Its shape is similar to a fountain pen. The insulin liquid is placed in the pen core, which contains a specific pushing device. After installation, a sterile injection needle is screwed on before injection, and the injection needle is inserted into the body, so that the insulin can be accurately injected into the body.

[0003] In clinical practice, insulin pen needles are often removed by using a needle cap or directly by hand. During large-scale, concentrated operations, there is a risk of needlestick injuries. When elderly diabetic patients inject insulin at home by themselves, due to decreased vision, there is also a risk of needlestick injuries when removing the needle after injection, and cross infection may also occur. For this reason, an automatic needle remover for insulin pens is designed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an automatic needle remover for an insulin pen, which can realize automatic needle removal for an insulin pen with simple manual assistance, is convenient to use, and reduces risks.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An automatic insulin pen needle remover, used for separating an injection needle from an insulin pen, comprising:

[0007] A separation box, the upper end surface of which is provided with a plug hole, a needle removal unit is installed inside the separation box, the needle removal unit comprises a mounting box fixedly mounted on the bottom surface of the separation box and a gear ring rotatably connected in the separation box, a driving motor is installed in the mounting box, the output end of the driving motor passes through the separation box and is meshed with the gear ring through a gear, two connecting rods are arranged in the gear ring, two symmetrically distributed clamping rings are installed on the two connecting rods, a force-bearing rod is rotatably connected at the bottom of the clamping ring, and a clamping unit for clamping the insulin pen body and a pressure unit for applying pressure to the force-bearing rod so that the clamping ring clamps the injection needle are installed in the separation box;

[0008] The storage box is threadedly connected below the separation box and communicated with the interior of the separation box, and is used to receive the injection needle separated from the insulin pen body.

[0009] In some embodiments, a mounting sleeve is provided on the inner bottom surface of the separation box, the mounting sleeve is connected to the jack, and a pressure sensor is installed on the inner wall of the mounting sleeve for sensing and controlling the opening and closing of the drive motor.

[0010] In some embodiments, a clearance groove is provided on the outer wall of the separation box, and the clamping unit includes two cross-arranged clamping rods, one end of the two clamping rods is passed through the outside of the clearance groove, and the other end is fixedly connected in the separation box, and the parts of the two clamping rods close to the socket are arc-shaped structures for clamping the insulin pen body.

[0011] In some embodiments, the two clamping rings are slidably connected to the outer wall of the connecting rod, and the pressure unit includes two sliding rods radially penetrating the outer wall of the separation box. The two sliding rods are symmetrically distributed and parallel to the connecting rod. One end of the sliding rod is rotatably connected to a semicircular ring, which is against the outer wall of the force-bearing rod, and the outer wall of the semicircular ring is fixedly connected to a plurality of limit rods, and the other end of the limit rod passes through the outside of the separation box.

[0012] In some embodiments, outer walls at both ends of the separation box are fixedly connected with threaded inner sleeves, the slide rod passes through the threaded inner sleeves, and the outer wall of the slide rod is fixedly connected with a threaded outer sleeve.

[0013] In some embodiments, the needle removal unit further includes two limiting rings fixedly connected to the outer wall of the connecting rod, and the two clamping rings are located between the two limiting rings.

[0014] In some embodiments, outer walls of the two connecting rods are sleeved with springs, and the springs are located between the two clamping rings.

[0015] In some embodiments, a support unit for supporting the insulin pen body is installed in the tooth ring, and the support unit includes a support plate fixedly connected to the inner wall of the tooth ring, and a through hole is opened in the middle of the support plate, and the inner diameter of the through hole is larger than the outer diameter of the injection needle.

[0016] In some embodiments, the inner wall of the perforation is rotatably connected to a support sleeve via a bearing, and the support sleeve supports the insulin pen body.

[0017] In some embodiments, a rubber gasket is provided on the inner wall of the clamping ring.

[0018] Beneficial effects: The utility model provides an automatic needle remover for insulin pens, which can realize automatic needle removal for insulin pens with simple manual assistance. It is simple, quick and convenient to operate, and does not require the operator to directly touch the needle with his hands, thus avoiding the risk of needlestick injury and improving the efficiency of clinical insulin injection. Specifically, at least the following beneficial effects can be obtained:

[0019] (1) The utility model inserts the injection needle at the end of the insulin pen body into the interior of the separation box from the insertion hole on the separation box, so that the injection needle is located between the two clamping rings. The rubber gasket on the inner wall of the clamping ring generates friction with the injection needle. The drive motor is used to make the gear ring drive the two clamping rings to rotate, and then the injection needle is twisted out of the end of the insulin pen body and falls into the storage box for collection, thereby realizing automatic needle removal, facilitating use, and reducing risks.

[0020] (2) The utility model clamps and fixes the insulin pen body by installing a clamping unit, and uses a pressure unit to clamp the injection needle with two clamping rings, thereby facilitating the injection needle to be twisted out from the end of the insulin pen body, thereby ensuring the stability and certainty of removing the injection needle.

[0021] It should be understood that the implementation of any embodiment of the present invention does not mean that multiple or all of the above-mentioned beneficial effects must be possessed or achieved at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0024] Figure 1 The overall structure diagram of the needle remover of the utility model is exemplified;

[0025] Figure 2 The schematic diagram of the cross-sectional structure of the separation box and the storage box of the utility model is exemplified;

[0026] Figure 3 The schematic diagram of the matching structure of the pressure-applying unit and the force-bearing rod of the utility model is exemplified;

[0027] Figure 4 The structural schematic diagram of the support unit of the utility model is exemplified;

[0028] Figure 5 The schematic diagram of the position structure of the clamping ring of the utility model is exemplified.

[0029] In the figure:

[0030] 1. Separation box; 2. Storage box; 3. Socket; 4. Needle removal unit; 41. Installation box; 42. Drive motor; 43. Gear; 44. Gear ring; 45. Connecting rod; 46. Clamping ring; 47. Force rod; 48. Spring; 49. Limiting ring; 5. Pressure unit; 51. Sliding rod; 52. Semicircular ring; 53. Limiting rod; 54. Threaded inner sleeve; 55. Threaded outer sleeve; 6. Clamping unit; 61. Fixing rod; 62. Clamping rod; 7. Support unit; 71. Support plate; 72. Perforation; 73. Support sleeve; 8. Installation sleeve; 9. Pressure sensor; 10. Clearance groove.

[0031] The same or corresponding symbols in the drawings indicate the same or corresponding parts. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in conjunction with the embodiments and drawings. Here, the illustrative embodiments of the present invention and their description are used to explain the present invention, but are not intended to limit the present invention.

[0033] In the present invention, 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.

[0034] It should be understood that the terms "include / comprise", "consist of..." or any other variations are intended to cover non-exclusive inclusion, so that a product, device, process or method that includes a series of elements includes not only those elements, but also may include other elements not explicitly listed when necessary, or also includes elements inherent to such product, device, process or method. In the absence of more restrictions, the elements defined by the sentence "include / comprise...", "consist of..." do not exclude the presence of other identical elements in the product, device, process or method that includes the elements.

[0035] It is also necessary to understand that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" to indicate directions or positional relationships are based on the directions 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, component or structure must have a specific direction, be constructed or operate in a specific direction, and should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] In view of the shortcomings of removing the insulin pen needle during clinical use, clinical personnel got inspiration from a pencil sharpener and designed an automatic needle remover for insulin pens such as the utility model to avoid the risk of needle stick injuries when removing the needle cap or directly removing it by hand during clinical use. This is especially important for elderly diabetic patients when injecting insulin by themselves at home.

[0038] The implementation of the present invention is described in detail below in conjunction with preferred embodiments.

[0039] See also Figure 1-5 The utility model provides an automatic needle remover for an insulin pen, comprising a separation box 1 and a storage box 2 threadedly connected to the lower end of the separation box 1, the storage box 2 is connected to the inside of the separation box 1, a plug hole 3 is provided on the upper end surface of the separation box 1, a needle removal unit 4 is installed in the separation box 1, and the needle removal unit 4 comprises a mounting box 41 fixedly mounted on the bottom surface of the separation box 1 and a gear ring 44 rotatably connected to the separation box 1, a drive motor 42 is installed in the mounting box 41, and the output end of the drive motor 42 passes through the separation box 1 and is fixedly connected to a gear ring 44 meshing with the gear ring 44. The gear 43 is connected together, and two connecting rods 45 are fixedly connected in the gear ring 44. The outer walls of the two connecting rods 45 are installed with two symmetrically distributed clamping rings 46, the inner walls of the clamping rings 46 are fixedly connected with rubber gaskets, and the bottom surface of the clamping ring 46 is rotatably connected with a force rod 47. The separation box 1 is installed with a clamping unit 6 for clamping the insulin pen body and a pressure unit 5 for applying pressure to the force rod 47 so that the clamping ring 46 clamps the injection needle. The gear ring 44 is installed with a supporting unit 7 for supporting the insulin pen body.

[0040] like Figure 1-5As shown, the main improvement of the utility model is to realize automatic needle removal for the insulin pen, which is convenient to use and reduces risks. When the injection needle at the end of the insulin pen body needs to be removed, the injection needle is inserted into the socket 3 on the separation box 1, and part of the insulin pen body is also inserted into the socket 3, so that the injection needle is moved between the two clamping rings 46. The rubber gasket on the inner wall of the clamping ring 46 clamps the injection needle. At this time, the insulin pen body is held tightly and the drive motor 42 is started to work. The drive motor 42 can be powered by a button battery, and the drive motor 42 drives the gear 43 to rotate The gear 43 drives the gear ring 44 to rotate in the separation box 1, and the gear ring 44 drives the two clamping rings 46 to rotate through the connecting rod 45. The clamping ring 46 drives the injection needle to rotate to separate it from the insulin pen. After separation, the insulin pen body is removed from the insertion hole 3. When another injection needle is inserted next time, the injection needle located between the clamping rings 46 after disassembly can be pushed into the storage box 2 for collection. When the injection needles collected in the storage box 2 occupy two-thirds of the interior, the storage box 2 can be rotated to separate it from the separation box 1, and the storage box 2 stored inside it can be cleaned.

[0041] like Figure 1 , 2 As shown, the inner bottom surface of the separation box 1 is fixedly connected with a mounting sleeve 8, the mounting sleeve 8 is connected with the socket 3, and the inner wall of the mounting sleeve 8 is installed with a pressure sensor 9, and the pressure sensor 9 controls the opening and closing of the driving motor 42; when the injection needle is inserted into the socket 3 on the separation box 1, part of the insulin pen body is also inserted into the socket 3, the inner diameter of the mounting sleeve 8 corresponds to the outer diameter of the insulin pen body, the insulin pen body contacts the switch of the pressure sensor 9, and then the pressure sensor 9 generates a signal, so that the controller of the driving motor 42 starts its work, and realizes automatic needle removal. After the insulin pen body is removed from the mounting sleeve 8, the pressure sensor 9 has no external pressure, and then generates a signal, so that the controller of the driving motor 42 turns it off.

[0042] like Figure 1 , 2 As shown, the outer wall of the separation box 1 is provided with a clearance groove 10, and the clamping unit 6 includes a fixing rod 61 fixedly connected to the inner top wall of the separation box 1, and the outer wall of the fixing rod 61 is rotatably connected with two staggered and oppositely arranged clamping rods 62, one end of the two clamping rods 62 is passed through the outside of the clearance groove 10, and the parts of the two clamping rods 62 close to the insertion hole 3 are arc-shaped structures, and the two clamping rods 62 clamp the insulin pen body; when the insulin pen body is inserted into the separation box 1 through the insertion hole 3 and the mounting sleeve 8, the two clamping rods 62 that pass through the outside of the clearance groove 10 can be pressed, and the two clamping rods 62 and the fixing rod 61 are rotated, so that the arc-shaped structures on the two clamping rods 62 clamp the outer wall of the insulin pen body, thereby restricting the insulin pen body, and then facilitating the rotation of the injection needle at the end of the insulin pen body when the insulin pen body is in a fixed state to remove the needle, which is convenient for use.

[0043] like Figure 3 , 5 As shown, the two clamping rings 46 are slidably connected to the outer wall of the connecting rod 45, and the pressure unit 5 includes two sliding rods 51 slidably connected to the outer wall of the separation box 1. The two sliding rods 51 are symmetrically distributed and parallel to the connecting rod 45. One end of the sliding rod 51 is rotatably connected to a semicircular ring 52, and the semicircular ring 52 is against the outer wall of the force-bearing rod 47. The outer wall of the semicircular ring 52 is fixedly connected to a plurality of limiting rods 53. The other end of the limiting rod 53 passes through the separation box 1 and is slidably connected thereto. The outer walls of both ends of the separation box 1 are fixedly connected to a threaded inner sleeve 54. The sliding rod 51 passes through the threaded inner sleeve 54, and the outer wall of the sliding rod 51 is fixedly connected to a threaded inner sleeve 54 threadedly connected to the inner wall of the threaded inner sleeve 54. The needle removal unit 4 further comprises two limiting rings 49 fixedly connected to the outer wall of the connecting rod 45, and two clamping rings 46 are located between the two limiting rings 49; when the injection needle needs to be removed, the injection needle is passed between the two clamping rings 46, and the limiting rings 49 restrict the two clamping rings 46, so that when the force-bearing rod 47 on the side wall of the clamping ring 46 is driven to rotate by the clamping ring 46, most of the rotation process is kept within the moving range of the inner wall of the semicircular ring 52, and the two sliding rods 51 are moved, and the sliding rod 51 drives the semicircular ring 52 to move, and the semicircular ring 52 drives the limiting rod 53 on its outer wall to slide with the separation box 1, and the limiting rod 53 is on the semicircular ring 5 2 is restricted so that it will not rotate. The semicircular ring 52 contacts the force-bearing rod 47, and the two clamping rings 46 are brought close to each other by the force-bearing rod 47. When the threaded outer sleeve 55 on the outer wall of the slide bar 51 contacts the threaded inner sleeve 54, the slide bar 51 is rotated, and the threaded outer sleeve 55 is threadedly connected with the threaded inner sleeve 54 until the two semicircular rings 52 abut against each other. At this time, the two clamping rings 46 clamp the outer wall of the injection needle with greater strength. The threaded outer sleeve 55 cooperates with the threaded inner sleeve 54 to restrict the slide bar 51 so that the semicircular ring 52 will not move. When the gear ring 44 rotates, the clamping ring 46 is driven to rotate by the connecting rod 45. The clamping ring 46 The injection needle is driven to rotate for needle removal, and during the rotation of the clamping ring 46, the force-bearing rod 47 on the bottom surface thereof is slidably connected to the inner walls of the two semicircular rings 52, so that the semicircular rings 52 are restricted by the force-bearing rod 47, and then the clamping ring 46 keeps clamping the injection needle, so that the clamping ring 46 can stably unscrew the injection needle, ensuring the stability and certainty of needle removal; after the injection needle is removed from the insulin pen body, the threaded outer sleeve 55 can be separated from the threaded inner sleeve 54, and the sliding rod 51 can be pulled outward, so that the semicircular ring 52 can cancel the restriction on the force-bearing rod 47, so that the injection needle can fall from between the two clamping rings 46 into the storage box 2 for collection.

[0044] like Figure 5As shown, the outer walls of the two connecting rods 45 are both sleeved with springs 48, and the springs 48 are located between the two clamping rings 46; when the semicircular ring 52 cancels the restriction on the force-bearing rod 47 by utilizing the elastic force of the springs 48, the two clamping rings 46 can be moved away from each other, thereby facilitating the injection needle to fall into the storage box 2.

[0045] like Figure 4 As shown, the support unit 7 includes a support plate 71 fixedly connected to the inner wall of the gear ring 44, and a through hole 72 is opened in the middle of the upper surface of the support plate 71. The inner diameter of the through hole 72 is larger than the outer diameter of the injection needle, and the support plate 71 blocks the insulin pen body; the insulin pen body drives the injection needle to pass through the through hole 72 on the support plate 71, and the through hole 72 is smaller than the maximum outer diameter of the insulin pen body, so that the support plate 71 supports the insulin pen body, so that the insulin pen body cannot continue to move downward, thereby facilitating the positioning of the injection needle for easy use.

[0046] like Figure 4 As shown, the inner wall of the through hole 72 is rotatably connected to a support sleeve 73 through a bearing, and the support sleeve 73 supports the insulin pen body; the insulin pen body is in contact with the support sleeve 73, and when the gear ring 44 rotates, the support plate 71 on its inner wall follows the rotation, and the support plate 71 rotates on the outer wall of the support sleeve 73, and the support sleeve 73 supports the insulin pen body, thereby avoiding the phenomenon of wear caused by friction between the support plate 71 and the insulin pen body.

[0047] Implementation steps in this embodiment: When the injection needle at the end of the insulin pen body needs to be removed, the injection needle is inserted into the socket 3 and the mounting sleeve 8 on the separation box 1, and part of the insulin pen body is also inserted into the socket 3 and the mounting sleeve 8. The injection needle passes through the perforation 72 on the support plate 71, and the insulin pen body contacts the support sleeve 73. The insulin pen body contacts the switch of the pressure sensor 9 located in the mounting sleeve 8, and then the pressure sensor 9 generates a signal, so that the controller of the drive motor 42 starts its work, and the drive motor 42 drives the gear 43 to rotate The gear 43 drives the gear ring 44 to rotate in the separation box 1, and the gear ring 44 drives the two clamping rings 46 to rotate through the connecting rod 45. At this time, the two clamping rods 62 that pass through the outside of the give way groove 10 can be pressed, and the two clamping rods 62 and the fixed rod 61 rotate, so that the arc structure on the two clamping rods 62 clamps the outer wall of the insulin pen body, thereby restricting the insulin pen body, and moving the two sliding rods 51. The sliding rod 51 drives the semicircular ring 52 to move, and the semicircular ring 52 drives the limiting rod 53 of its outer wall to slide with the separation box 1, and the limiting rod 53 is on the semicircular ring 52 is restricted so that it will not rotate. The semicircular ring 52 contacts the force-bearing rod 47 driven by the clamping ring 46 to rotate, and the two clamping rings 46 are driven by the force-bearing rod 47 to approach each other. When the threaded outer sleeve 55 on the outer wall of the slide bar 51 contacts the threaded inner sleeve 54, the slide bar 51 is rotated, and the threaded outer sleeve 55 is threadedly connected with the threaded inner sleeve 54 until the two semicircular rings 52 abut against each other. At this time, the two clamping rings 46 clamp the outer wall of the injection needle with greater strength, and the threaded outer sleeve 55 cooperates with the threaded inner sleeve 54 to restrict the slide bar 51. The semicircular ring 52 will not move, and the rotation of the clamping ring 46 drives the injection needle to rotate and separate it from the insulin pen; after the injection needle is removed from the insulin pen body, the restriction of the two clamping rods 62 on the insulin pen body is cancelled, the threaded outer sleeve 55 and the threaded inner sleeve 54 are separated, and the sliding rod 51 is pulled outward, so that the semicircular ring 52 cancels the restriction on the force-bearing rod 47, and the elastic force of the spring 48 is used to move the two clamping rings 46 away, so that the injection needle falls into the storage box 2 for storage, and finally the insulin pen body with the injection needle removed is pulled out from the socket 3.

[0048] The driving motor 42 and the pressure sensor 9 mentioned above can be purchased from the market. They are mature technologies and have been fully disclosed, so they will not be repeated in the specification.

[0049] Although several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the present invention. Certain features described in the context of separate embodiments may also be implemented in a single implementation in combination. On the contrary, the various features described in the context of a single implementation may also be implemented in multiple implementations individually or in any suitable sub-combination.

[0050] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An automatic needle remover for an insulin pen, used to separate an injection needle from an insulin pen, characterized in that: include: A separation box (1) is provided with a socket (3) on its upper end surface. A needle removal unit (4) is installed inside the separation box (1). The needle removal unit (4) comprises a mounting box (41) fixedly mounted on the bottom surface of the separation box (1) and a gear ring (44) rotatably connected to the separation box (1). A driving motor (42) is installed inside the mounting box (41). The output end of the driving motor (42) passes through the separation box (1) and is meshed with the gear ring (44) through a gear (43). Two connecting rods (45) are arranged inside the gear ring (44). Two symmetrically distributed clamping rings (46) are installed on the two connecting rods (45). The bottom of the clamping ring (46) is rotatably connected to a force-bearing rod (47). A clamping unit (6) for clamping an insulin pen body and a pressure-applying unit (5) for applying pressure to the force-bearing rod (47) so that the clamping ring (46) clamps the injection needle are installed inside the separation box (1); The storage box (2) is threadedly connected to the bottom of the separation box (1) and communicated with the interior of the separation box (1), and is used to receive the injection needle separated from the insulin pen body.

2. The automatic needle remover for insulin pens according to claim 1, characterized in that: The inner bottom surface of the separation box (1) is provided with a mounting sleeve (8), the mounting sleeve (8) is connected to the jack (3), and the inner wall of the mounting sleeve (8) is provided with a pressure sensor (9) for sensing and controlling the opening and closing of the drive motor (42).

3. The automatic needle remover for insulin pens according to claim 1, characterized in that: The outer wall of the separation box (1) is provided with a clearance groove (10), and the clamping unit (6) comprises two cross-arranged clamping rods (62), one end of the two clamping rods (62) is passed through the outside of the clearance groove (10), and the other end is fixedly connected to the separation box (1), and the parts of the two clamping rods (62) close to the insertion hole (3) are arc-shaped structures for clamping the insulin pen body.

4. The automatic needle remover for insulin pens according to claim 1, characterized in that: The two clamping rings (46) are slidably connected to the outer wall of the connecting rod (45), and the pressure unit (5) includes two sliding rods (51) radially penetrated through the outer wall of the separation box (1). The two sliding rods (51) are symmetrically distributed and parallel to the connecting rod (45). One end of the sliding rod (51) is rotatably connected to a semicircular ring (52), and the semicircular ring (52) is abutted against the outer wall of the force-bearing rod (47). In addition, the outer wall of the semicircular ring (52) is fixedly connected to a plurality of limiting rods (53), and the other end of the limiting rod (53) passes through the outside of the separation box (1).

5. The automatic needle remover for insulin pens according to claim 4, characterized in that: The outer walls at both ends of the separation box (1) are fixedly connected with a threaded inner sleeve (54), the slide rod (51) passes through the threaded inner sleeve (54), and the outer wall of the slide rod (51) is fixedly connected with a threaded outer sleeve (55).

6. The automatic needle remover for insulin pen according to claim 1, characterized in that: The needle removal unit (4) further comprises two limiting rings (49) fixedly connected to the outer wall of the connecting rod (45), and the two clamping rings (46) are located between the two limiting rings (49).

7. The automatic needle remover for insulin pens according to claim 1, characterized in that: The outer walls of the two connecting rods (45) are both sleeved with springs (48), and the springs (48) are located between the two clamping rings (46).

8. The automatic needle remover for insulin pen according to claim 1, characterized in that: A support unit (7) for supporting the insulin pen body is installed in the toothed ring (44), and the support unit (7) comprises a support plate (71) fixedly connected to the inner wall of the toothed ring (44), and a through hole (72) is opened in the middle of the support plate (71), and the inner diameter of the through hole (72) is larger than the outer diameter of the injection needle.

9. The automatic needle remover for insulin pens according to claim 8, characterized in that: The inner wall of the perforation (72) is rotatably connected to a support sleeve (73) via a bearing, and the support sleeve (73) supports the insulin pen body.

10. The automatic needle remover for insulin pen according to claim 1, characterized in that: The inner wall of the clamping ring (46) is provided with a rubber gasket.

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