A gynecological gel medicine quantitative extruder

Abstract

This invention discloses a quantitative extruder for gynecological gel-type drugs, comprising a cylindrical shell and a rotating shell. The cylindrical shell has a cavity containing a movable piston. A nipple is located at the head end of the cylindrical shell, with its opening connected to the cavity. A core is located at the tail end of the cylindrical shell. A threaded tube is located within the rotating shell. The core is rotatably connected to the rotating shell, and the threaded tube is housed within the core. A threaded rod is rotatably connected to the piston, threaded into the threaded tube. When the rotating shell rotates forward, it moves the piston towards the nipple, extruding the gel from the cavity through the opening. A retractable positioning block is located on the outer circumferential surface of the core. The extended end of the positioning block is hemispherical, and the retracted end is equipped with a spring. Four positioning grooves are arranged in a circular array on the inner circumferential surface of the rotating shell. When the rotating shell rotates, the positioning block passes through the four positioning grooves sequentially, engaging with them. This extruder, by rotating the rotating shell, quantitatively extrudes the gel and applies it directly to the patient, facilitating dosage control and making it suitable for ultra-low doses.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a quantitative extruder for gynecological gel-type drugs. Background Technology

[0002] Gynecological gel medications, such as estradiol gel. Commercially available estradiol gels come with calipers. The calipers have grooves on their surface, with graduations marked in the middle of the grooves: 1 caliper represents 2.5g, and half a caliper represents 1.25g. Instructions for use: Unscrew the gel cap and pierce the seal with the pointed end of the cap until the gel tube is completely open. Then, hold the left end of the caliper with your left hand and squeeze the estradiol gel into the groove of the caliper in a toothpaste-like manner with your right hand. A uniform cylindrical shape is ideal; filling the entire groove represents 1 caliper, and filling to the graduation mark represents half a caliper. Then, evenly apply the remaining estradiol gel from the caliper groove to a large area of ​​skin.

[0003] The shortcomings of the above technologies are:

[0004] First, the glycol gel is applied to calipers to calculate the dosage, and then applied to the patient. Medication residue can easily remain on the calipers, leading to insufficient dosage applied to the patient and causing medication waste.

[0005] Calipers need to be cleaned after use, and repeated cleaning of calipers increases the workload; moreover, repeated use of calipers can easily cause infection.

[0006] Current calipers can only measure 2.5g and 1.25g of diol gel. According to the "Guidelines for Menopause Management and Hormone Therapy in China (2023 Edition)," for overweight or obese women with a body mass index >25 kg / m² and suffering from metabolic syndrome or hypertension, low-dose or ultra-low-dose transdermal estrogen regimens should be preferred. However, if an ultra-low dose (0.625g) is required, dosage control becomes difficult.

[0007] Therefore, how to design an extruder for quantitatively dispensing gynecological gel drugs has become an urgent problem to be solved in the field of medical devices. Utility Model Content

[0008] The purpose of this invention is to provide a quantitative extruder for gynecological gel drugs, which can quantitatively extrude gel by rotating the shell and apply it directly to the patient, making it easy to control the dosage and suitable for ultra-low dosage.

[0009] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0010] A quantitative extruder for gynecological gel-type drugs includes a cylindrical shell and a rotating shell. The cylindrical shell has a cavity containing a movable piston. A nipple is located at the head end of the cylindrical shell, with its opening connected to the cavity. A core is located at the tail end of the cylindrical shell. A threaded tube is located within the rotating shell. The core is rotatably connected to the rotating shell, and the threaded tube is housed within the core. A threaded rod is rotatably connected to the piston, threaded into the threaded tube. When the rotating shell rotates forward, it moves the piston towards the nipple, extruding the gel from the cavity through the opening. A retractable positioning block is located on the outer circumferential surface of the core. The extended end of the positioning block is hemispherical, and the retracted end is equipped with a spring. Four positioning grooves are arranged in a circumferential array on the inner circumferential surface of the rotating shell. When the rotating shell rotates, the positioning block passes through the four positioning grooves sequentially, engaging with them. When the positioning block moves away from the groove, it retracts and the spring is compressed; when it moves back to the groove, it extends and the spring returns to its original position.

[0011] Compared with existing technologies, the gynecological gel drug dispensing device using the above-mentioned technical solution has the following beneficial effects:

[0012] Using the gynecological gel extruder of this invention, rotating the casing one unit forward (i.e., moving the positioning block to the next positioning slot) produces a tactile feedback, ensuring that the amount of gel extruded from the opening is equal for each unit, thus achieving the purpose of quantitatively extruding gynecological gel drugs. The spring returns the positioning block to pop out and engage it in the positioning slot, producing a clicking sound. Each unit extrudes 0.625g of gel. If 2.5g of gel is required, the positioning block will pass through four positioning slots, producing four clicking sounds, making dosage control easy. It is also suitable for low doses of 1.25g and ultra-low doses of 0.625g.

[0013] The gel is applied directly to the patient after being squeezed out, ensuring a sufficient dosage and preventing medication waste.

[0014] Compared to existing calipers, there is no need to repeatedly clean the calipers, reducing workload and avoiding infection caused by repeated use of calipers.

[0015] Preferably, 0.625g of gel is extruded from the opening when the shell rotates forward and the positioning block moves to the next positioning slot. This is consistent with the dosage of existing gynecological gel-type drugs.

[0016] Preferably, the casing is made of a transparent material, and a capacity scale is marked on the side of the casing. By checking the capacity scale, the amount of gel stored in the casing can be determined.

[0017] Preferably, the outer circumferential surface of the spiral shell is provided with four locking grooves arranged in a circular array, with each locking groove corresponding to a positioning groove. A movable locking block is provided on the side of the cylindrical shell. The locking block and locking groove are respectively located at the junction of the cylindrical shell and the spiral shell. The locking block moves into the locking groove to lock the spiral shell, and moves out of the locking groove to unlock the spiral shell. After the spiral shell is locked, it prevents the spiral shell from rotating and causing the gel to be accidentally squeezed out of the opening.

[0018] Preferably, it also includes a belt and a cap. The two ends of the belt are fixed to the head end of the shell and the side of the cap, respectively. The nipple is fitted into the cap groove to seal the opening. The cap seals the opening to prevent the gel from being accidentally squeezed out of the opening. The belt holds the cap in place, fixing it to the shell and preventing it from falling off or being lost.

[0019] Preferably, the nipple end face is provided with a thin film that seals the opening, and the reverse side of the cap is provided with a cone for puncturing the film. The film and cone can refer to the corresponding structure of existing estriol gel cream (manufacturer: Yongfeng County Xinli Trading Company). The film seals the opening, preserving the gel in a sealed manner, resulting in better shelf life for unopened gel; puncturing the film with the cone allows for quick opening and use of the gel, making the operation simple.

[0020] Preferably, the reverse side of the cover has a groove, and the cone is located in the groove, with the groove wall higher than the cone tip. The groove wall prevents the cone from accidentally puncturing the skin.

[0021] Preferably, the side of the casing is provided with a fixing member, which has a "T"-shaped groove. The groove includes a horizontal part and a vertical part. The width of the vertical part is smaller than the width of the belt, and the width of the horizontal part is larger than the width of the vertical part. The belt is secured in the horizontal part of the groove. The fixing member secures the belt and prevents the cap from shaking, which would hinder the application of medicine. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the extruder after the cover is removed in the embodiment.

[0023] Figure 2 This is a schematic diagram of the extruder structure after the belt is secured in the embodiment.

[0024] Figure 3 This is a side view of the extruder after the cover is put on in the embodiment.

[0025] Figure 4 This is a schematic diagram of the pusher block during the unlocking of the rotating shell in the embodiment.

[0026] Figure 5 This is a cross-sectional view of the extruder in the embodiment.

[0027] Figure 6 This is a cross-sectional view of the shell and core in the embodiment.

[0028] Figure 7 This is a cross-sectional view of the cylinder cavity in the embodiment.

[0029] Reference numerals: 1. Shell; 10. Cavity; 11. Nipple; 12. Port; 13. Core; 14. Positioning block; 15. Spring; 16. Locking block; 17. Capacity scale bar; 18. Gel; 2. Rotary shell; 21. Threaded tube; 22. Positioning groove; 23. Locking groove; 3. Threaded rod; 31. Piston; 4. Fixing element; 40. Slot; 41. Horizontal part; 42. Vertical part; 5. Cover body; 50. Cover groove; 51. Cone head; 52. Groove; 53. Membrane; 54. Belt body. Detailed Implementation

[0030] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0031] like Figures 1 to 7 The gynecological gel-type drug dispensing device shown includes a cylindrical shell 1 and a rotating shell 2. The cylindrical shell 1 has a cavity 10 inside, and a movable piston 31 is provided inside the cavity 10. A nipple 11 is provided at the head end of the cylindrical shell 1, and the nipple 11 has an opening 12 that communicates with the cavity 10. A core 13 is provided at the tail end of the cylindrical shell 1. A threaded tube 21 is provided inside the rotating shell 2. The core 13 is rotatably connected to the rotating shell 2, and the threaded tube 21 is placed inside the core 13. A threaded rod 3 is rotatably connected to the piston 31, and the threaded rod 3 is threadedly connected to the threaded tube 21. When the rotating shell 2 rotates in the forward direction, it drives the piston 31 to move towards the nipple 11, so that the gel 18 in the cavity 10 is squeezed out through the opening 12. The core 13 has a retractable positioning block 14 on its outer circumferential surface. The extended end of the positioning block 14 is hemispherical, and the retracted end of the positioning block 14 is equipped with a spring 15. The inner circumferential surface of the rotating shell 2 has four positioning grooves 22 arranged in a circular array. When the rotating shell 2 rotates, the positioning block 14 passes through the four positioning grooves 22 sequentially, and the positioning block 14 engages within the positioning groove 22. When the positioning block 14 moves away from the positioning groove 22, the positioning block 14 retracts and the spring 15 is compressed; when the positioning block 14 moves to the positioning groove 22, the positioning block 14 extends and the spring 15 returns to its original position. Rotating the rotating shell 2 one unit clockwise (i.e., moving the positioning block 14 to the next positioning groove 22) produces a jerking sensation, ensuring that the amount of gel 18 extruded from the opening 12 is equal for each unit, achieving the purpose of quantitatively extruding gynecological gel-like drugs. After extrusion, the gel 18 is directly applied to the patient, ensuring a sufficient dosage and preventing drug waste.

[0032] The spring 15 resets, causing the positioning block 14 to pop out and engage with the positioning groove 22, producing a clicking sound. Each unit extrudes 0.625g of gel 18, which conforms to the dosage of existing gynecological gel medications. If 2.5g of gel 18 is required, the positioning block 14 passes through four positioning grooves 22, producing four clicking sounds, making dosage control easy and suitable for low doses of 1.25g and ultra-low doses of 0.625g.

[0033] The outer shell 1 is made of transparent material, and a capacity scale 17 is marked on the side of the outer shell 1. By checking the capacity scale 17, the amount of gel 18 stored in the inner cavity 10 can be determined.

[0034] Reference Figure 4 The outer circumferential surface of the spiral shell 2 is provided with four locking grooves 23 arranged in a circular array. The locking grooves 23 are positioned one-to-one with the positioning grooves 22. The side of the cylindrical shell 1 is provided with a movable locking block 16. The locking block 16 and the locking grooves 23 are respectively located at the junction of the cylindrical shell 1 and the spiral shell 2. When the locking block 16 moves into the locking groove 23, the spiral shell 2 is locked. When the locking block 16 moves out of the locking groove 23, the spiral shell 2 is unlocked. After the spiral shell 2 is locked, it prevents the spiral shell 2 from rotating and causing the gel 18 to be accidentally squeezed out of the opening 12.

[0035] Reference Figure 1 It also includes a belt 54 and a cap 5. The two ends of the belt 54 are fixed to the head end of the shell 1 and the side of the cap 5, respectively. The nipple 11 is fitted into the cap groove 50 of the cap 5 to close the opening 12. The cap 5 closes the opening 12 to prevent the gel 18 from being accidentally squeezed out of the opening 12. The belt 54 holds the cap 5 in place, fixing the cap 5 to the shell 1 to prevent the cap 5 from falling off or being lost.

[0036] Reference Figure 1 , Figure 2 and Figure 7 The nipple 11 has a thin film 53 on its end face, which seals the opening 12. The cover 5 has a cone 51 on its reverse side, which is used to puncture the thin film 53. The structure of the thin film 53 and the cone 51 can be referenced from the existing estriol gel cream (manufacturer: Yongfeng County Xinli Trading Company). The thin film 53 seals the opening 12, sealing and preserving the gel 18. The unopened gel 18 has a better shelf life. Punctures the thin film 53 with the cone 51, which allows for quick opening and use of the gel 18, making the operation simple.

[0037] The cover 5 has a groove 52 on its reverse side, and a cone 51 is located in the groove 52. The periphery of the groove 52 is higher than the tip of the cone 51. The periphery of the groove 52 can prevent the cone 51 from accidentally puncturing the skin.

[0038] The casing 1 has a fixing member 4 on its side. The fixing member 4 has a T-shaped groove 40, which includes a horizontal part 41 and a vertical part 42. The width of the vertical part 42 is smaller than the width of the belt 54, and the width of the horizontal part 41 is larger than the width of the vertical part 42. The belt 54 is secured in the horizontal part 41 of the groove 40. The fixing member 4 secures the belt 54 and prevents the cover 5 from shaking, which would hinder the application of medicine.

[0039] The outer circumferential surface of the rotating shell 2 and the surface of the locking block 16 are respectively provided with anti-slip textures. The anti-slip textures are used to increase friction, making it easier to rotate the rotating shell 2 and push the locking block 16.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A quantitative extruder for gynecological gel-type drugs, characterized in that: It includes a cylindrical shell (1) and a rotating shell (2). The cylindrical shell (1) has a cylindrical cavity (10) inside, and a movable piston (31) is provided inside the cylindrical cavity (10). The head end of the cylindrical shell (1) is provided with a nipple (11), and the nipple (11) has a port (12) that is connected to the cylindrical cavity (10). The cylindrical shell (1) has a core (13) at its tail end. The spiral shell (2) has a threaded tube (21) inside. The core (13) is rotatably connected to the spiral shell (2), and the threaded tube (21) is placed inside the core (13). The piston (31) is rotatably connected to a threaded rod (3), and the threaded rod (3) is threadedly connected to the threaded tube (21). When the spiral shell (2) rotates in the forward direction, it drives the piston (31) to move towards the nipple (11), so that the gel (18) in the cylindrical cavity (10) is squeezed out of the opening (12). The outer circumferential surface of the core (13) is provided with a retractable positioning block (14). The extended end of the positioning block (14) is hemispherical, and the retracted end of the positioning block (14) is provided with a spring (15). The inner circumferential surface of the rotating shell (2) is provided with four positioning grooves (22). When the rotating shell (2) rotates, the positioning block (14) passes through the four positioning grooves (22) in sequence. The positioning block (14) is engaged in the positioning groove (22). When the positioning block (14) moves away from the positioning groove (22), the positioning block (14) retracts and the spring (15) is compressed. When the positioning block (14) moves to the positioning groove (22), the positioning block (14) extends and the spring (15) returns to its original position.

2. The gynecological gel drug dispensing device according to claim 1, characterized in that: When the shell (2) rotates in the forward direction and the positioning block (14) moves to the next positioning slot (22), 0.625g of gel (18) is extruded through the opening (12).

3. The gynecological gel drug dispensing device according to claim 1, characterized in that: The shell (1) is made of transparent material, and the side of the shell (1) is marked with a capacity scale (17).

4. The gynecological gel drug dispensing device according to claim 1, characterized in that: The outer circumferential surface of the rotating shell (2) is provided with four locking grooves (23), and the locking grooves (23) are arranged in a one-to-one correspondence with the positioning grooves (22). The side of the cylindrical shell (1) is provided with a movable locking block (16). The locking block (16) and the locking groove (23) are respectively located at the junction of the cylindrical shell (1) and the rotating shell (2). When the locking block (16) moves into the locking groove (23), the rotating shell (2) is locked. When the locking block (16) moves out of the locking groove (23), the rotating shell (2) is unlocked.

5. The gynecological gel drug dispensing device according to claim 1, characterized in that: It also includes a belt (54) and a cover (5). The two ends of the belt (54) are fixed to the head end of the cylindrical shell (1) and the side of the cover (5), respectively. The nipple (11) is fitted into the cover groove (50) of the cover (5) to close the opening (12).

6. The gynecological gel drug dispensing device according to claim 5, characterized in that: The nipple (11) end face is provided with a thin film (53), the thin film (53) closes the opening (12), and the cover (5) is provided with a cone (51) on the reverse side for puncturing the thin film (53).

7. The gynecological gel drug dispensing device according to claim 6, characterized in that: The cover (5) has a groove (52) on the reverse side, and the cone (51) is located in the groove (52). The periphery of the groove (52) is higher than the tip of the cone (51).

8. The gynecological gel drug dispensing device according to claim 5, characterized in that: The cylindrical shell (1) is provided with a fixing member (4) on its side. The fixing member (4) is provided with a "T"-shaped slot (40). The slot (40) includes a horizontal part (41) and a vertical part (42). The width of the vertical part (42) is smaller than the width of the belt body (54), and the width of the horizontal part (41) is larger than the width of the vertical part (42). The belt body (54) is fixed in the horizontal part (41) of the slot (40).

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