A gel applicator for uniform drug delivery

Abstract

This utility model relates to a gel applicator for uniform drug delivery, comprising a delivery tube and a push rod. The delivery tube is divided into a head end and a tail end, with an opening at the tail end for inserting the push rod. An injection port is located at the axial center of the delivery tube near the tail end. A first dispensing hole is located at the center of the cross-section of the head end of the delivery tube. Multiple second and third dispensing holes are also provided on the peripheral wall of the delivery tube, located between the first dispensing hole and the injection port. The second dispensing holes are arranged in multiple rows along the axial direction of the delivery tube, with multiple second dispensing holes spaced apart in each row along the circumference of the delivery tube. Similarly, the third dispensing holes are arranged in multiple rows along the axial direction of the delivery tube, with multiple third dispensing holes spaced apart in each row along the circumference of the delivery tube. The diameters of the second, third, and first dispensing holes decrease sequentially. This application's technical solution has a simple structure, is easy to operate, and has a low cost, while also improving the uniformity of drug delivery.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a gel applicator for uniform drug delivery. Background Technology

[0002] Traditional drug delivery devices consist of a delivery tube and a push rod. The delivery tube is a straight tube with the push rod inserted at one end and a dispensing hole at the center of the other end. Medical staff push the push rod to dispense the drug from the dispensing hole. However, when semi-solid gels are applied to the body's natural cavities, they tend to accumulate in one place and are not easy to disperse and spread evenly. This prevents the semi-solid gel from exerting its full efficacy, resulting in poor drug delivery due to its localized effect. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides a gel applicator for uniform drug delivery, which features a simple structure, convenient operation, low cost, and improved drug delivery uniformity.

[0004] The gel applicator for uniform drug delivery provided in this application adopts the following technical solution:

[0005] A gel applicator for uniform drug delivery includes a drug delivery tube and a push rod. The drug delivery tube is divided into a head end and a tail end. The head end of the drug delivery tube is arc-shaped, and the tail end of the drug delivery tube has an opening for inserting the push rod. An assist handle is provided at the opening of the tail end of the drug delivery tube.

[0006] The drug delivery tube has an injection port located at the axial center near the tail end of the drug delivery tube, and the injection port is located on the side wall of the radial side of the drug delivery tube.

[0007] A first dispensing hole is provided at the center of the cross-section of the drug delivery tube tip;

[0008] The peripheral wall of the drug delivery tube is also provided with a plurality of second drug outlet holes and a plurality of third drug outlet holes, the second drug outlet holes and the third drug outlet holes being located between the first drug outlet hole and the injection port.

[0009] Preferably, the second drug outlet holes are arranged in multiple rows at intervals along the axial direction of the drug delivery tube, and each row of the second drug outlet holes is arranged in multiple rows at intervals along the circumferential direction of the drug delivery tube.

[0010] Preferably, the third drug outlet holes are arranged in multiple rows at intervals along the axial direction of the drug delivery tube, and each row of the third drug outlet holes is arranged in multiple rows at intervals along the circumferential direction of the drug delivery tube.

[0011] Preferably, the third drug outlet is closer to the head end of the drug delivery tube than the second drug outlet, and the diameter of the third drug outlet is smaller than the diameter of the second drug outlet, while the diameter of the first drug outlet is smaller than the diameter of the third drug outlet.

[0012] Preferably, the number of the two drug outlet holes in each row is the same, the number of the third drug outlet holes in each row is the same, and the number of the third drug outlet holes in each row is less than the number of the second drug outlet holes in each row.

[0013] Preferably, a limiting component is provided between the drug delivery tube and the push rod. The limiting component includes a limiting member and a mating member. The limiting member is annular and integrally formed on the inner peripheral wall of the drug delivery tube. The limiting member is located near the opening of the drug delivery tube. The mating member is annular and fixedly connected to the outer wall of the push rod. The inner diameter of the limiting member is smaller than the outer diameter of the mating member.

[0014] Preferably, the inner edges of the two axial end faces of the limiting member are rounded.

[0015] Preferably, the outer edges of the two axial end faces of the mating parts are rounded.

[0016] Preferably, the mating parts are made of soft materials.

[0017] Preferably, the end of the push rod near the front end of the administration tube is arc-shaped and adapted to the head end of the administration tube. A piston is provided at the end of the push rod near the front end of the administration tube, and the piston covers the end of the push rod near the front end of the administration tube.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] Because the dispensing tube has dispensing holes at the tip and on the sidewalls, it can disperse viscous gel or liquid products for administration, avoiding product accumulation.

[0020] Because the second dispensing hole is closer to the opening of the administration tube than the third dispensing hole, and the diameter of the second dispensing hole is larger than that of the third dispensing hole, and the number of second dispensing holes in a row is greater than the number of third dispensing holes in a row, more viscous gel or liquid products are first dispensed from the second dispensing hole, which is closest to the opening of the administration tube and has the largest diameter, then from the third dispensing hole, and finally from the first dispensing hole. When the pusher is pushed to the head of the administration tube, the remaining drug is also squeezed out from the first dispensing hole, resulting in lower drug residue and a basically consistent amount of drug dispensed from top to bottom. This makes the gel-like drug dispensed more evenly and improves the administration effect. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a gel applicator for uniform drug delivery according to Embodiment 1 of this application.

[0022] Figure 2 This is a cross-sectional structural diagram of the drug delivery tube and push rod used in Embodiment 1 of this application.

[0023] Figure 3This is a cross-sectional structural diagram of the drug delivery tube and the limiting member in Embodiment 1 of this application.

[0024] Figure 4 This is a cross-sectional structural diagram of the drug delivery tube used in Embodiment 1 of this application.

[0025] Figure 5 This is a schematic diagram illustrating the structure of the push rod and piston in Embodiment 2 of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Administration tube; 11. Head end; 12. Tail end; 13. Opening; 14. Push handle; 2. Push rod; 3. Injection port; 4. First drug outlet; 5. Second drug outlet; 6. Third drug outlet; 7. Limiting component; 8. Fitting component; 9. Piston. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0028] This application discloses a gel applicator for uniform drug delivery.

[0029] Example 1

[0030] Reference Figure 1-4 The gel applicator for uniform drug delivery includes a drug delivery tube 1 and a push rod 2. In this embodiment, the outer diameter of the drug delivery tube 1 is 5~20mm. The drug delivery tube 1 is divided into a head end 11 and a tail end 12. The head end 11 of the drug delivery tube 1 is arc-shaped, and the tail end 12 of the drug delivery tube 1 is provided with an opening 13 for inserting the push rod 2. The cross-section of the push rod 2 is "+" shaped. The end of the push rod 2 near the front end of the drug delivery tube 1 is arc-shaped and adapted to the head end 11 of the drug delivery tube 1. An assist handle 14 is provided at the opening 13 of the tail end 12 of the drug delivery tube 1.

[0031] A drug injection port 3 is provided at the axial center of the drug delivery tube 1 near the tail end 12 of the drug delivery tube 1. The drug injection port 3 is located on the side wall of the radial side of the drug delivery tube 1, which facilitates the addition of gel drugs into the drug delivery tube 1.

[0032] A first drug outlet 4 is provided at the center of the cross-section of the end 11 of the drug delivery tube 1.

[0033] The peripheral wall of the drug delivery tube 1 is also provided with a plurality of second drug outlet holes 5 and a plurality of third drug outlet holes 6. The second drug outlet holes 5 and the third drug outlet holes 6 are located between the first drug outlet hole 4 and the injection port 3. In this embodiment, the diameter of the injection port 3 is 5~15mm.

[0034] The second drug outlet 5 is arranged in multiple rows along the axial direction of the drug delivery tube 1, and each row of the second drug outlet 5 is arranged in multiple rows along the circumferential direction of the drug delivery tube 1.

[0035] The third drug outlet 6 is arranged in multiple rows along the axial direction of the drug delivery tube 1, and the third drug outlet 6 in each row is arranged in multiple rows along the circumferential direction of the drug delivery tube 1.

[0036] Since both the tip 11 and the peripheral wall of the administration tube 1 are provided with dispensing holes, the relatively viscous gel or liquid product can be dispersed and administered, avoiding product accumulation.

[0037] The number of two medicine outlet holes in each row is the same, the number of three medicine outlet holes 6 in each row is the same, and the number of three medicine outlet holes 6 in each row is less than the number of two medicine outlet holes 5 in each row.

[0038] In this embodiment, the second drug outlet holes 5 are arranged in three rows at intervals along the axial direction of the drug delivery tube 1. The distance between the row of second drug outlet holes 5 near the head end 11 of the drug delivery tube 1 and the middle row of second drug outlet holes 5 is greater than the distance between the row of second drug outlet holes 5 near the tail end 12 of the drug delivery tube 1 and the middle row of second drug outlet holes 5. Each row of second drug outlet holes 5 has four holes at intervals along the circumference of the drug delivery tube 1. The third drug outlet holes 6 are arranged in two rows at intervals along the axial direction of the drug delivery tube 1. Each row of third drug outlet holes 6 has two holes at intervals along the circumference of the drug delivery tube 1. The two rows of third drug outlet holes 6 are staggered.

[0039] The third drug outlet 6 is closer to the head end 11 of the drug delivery tube 1 than the second drug outlet 5. The diameter of the third drug outlet 6 is smaller than the diameter of the second drug outlet 5, and the diameter of the first drug outlet 4 is smaller than the diameter of the third drug outlet 6.

[0040] Because the second dispensing hole 5 is closer to the opening 13 of the administration tube 1 than the third dispensing hole 6, and the diameter of the second dispensing hole 5 is larger than that of the third dispensing hole 6, the more viscous gel or liquid product is first dispensed from the second dispensing hole 5, which is closest to the opening 13 and has the largest diameter, then from the third dispensing hole 6, and finally from the first dispensing hole 4. When the push rod 2 is pushed to the head end 11 of the administration tube 1, the remaining drug is also squeezed out from the first dispensing hole 4, resulting in a lower drug residue and a basically consistent amount of drug dispensed from top to bottom. This makes the gel-like drug dispensed more evenly and improves the administration effect.

[0041] A limiting component is provided between the administration tube 1 and the push rod 2. The limiting component includes a limiting member 7 and a mating member 8. The limiting member 7 is annular and integrally formed on the inner peripheral wall of the administration tube 1. The limiting member 7 can be a ring plate or a plurality of limiting protrusions spaced apart along the circumference of the administration tube 1. In this embodiment, the limiting member 7 is in the form of a ring plate.

[0042] The limiting member 7 is located near the opening 13 of the administration tube 1, and the mating member 8 is annular and fixedly connected to the outer wall of the push rod 2. The inner diameter of the limiting member 7 is smaller than the outer diameter of the mating member 8. By setting the limiting member 7 and the mating member 8, the position of the push rod 2 being pulled back is restricted, preventing the operator from directly pulling the push rod 2 out of the administration tube 1.

[0043] The inner edges of the two axial end faces of the limiting member 7 are rounded, and the outer edges of the two axial end faces of the mating member 8 are rounded. The mating member 8 is made of soft material. In this embodiment, the mating member 8 is made of rubber material, which prevents the push rod 2 from disengaging from the administration tube 1 while avoiding damage to the limiting member 7.

[0044] Example 2

[0045] Reference Figure 5 The difference between Embodiment 2 and Embodiment 1 is that a piston 9 is provided at the end of the push rod 2 near the front end of the administration tube 1. The piston 9 covers the end of the push rod 2 near the front end of the administration tube 1, and the outer wall of the piston 9 fits against the inner wall of the administration tube 1, thereby reducing the gap between the end of the push rod 2 near the head 11 of the administration tube 1 and the inner wall of the administration tube 1, further reducing drug residue, and also increasing the friction between the push rod 2 and the administration tube 1, further preventing the operator from directly pulling the push rod 2 out of the administration tube 1.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A gel dispenser for uniform drug administration, characterized in that: It includes a drug delivery tube and a push rod. The drug delivery tube is divided into a head end and a tail end. The head end of the drug delivery tube is arranged in an arc shape. An opening for the push rod to insert is provided at the tail end of the drug delivery tube. A boosting handle is arranged at the opening of the tail end of the drug delivery tube. A drug injection port is arranged at a position near the tail end of the drug delivery tube in the axial middle of the drug delivery tube. The drug injection port is located on the side wall on one radial side of the drug delivery tube. A first drug outlet hole is arranged at the central position of the cross-section of the head end of the drug delivery tube. A plurality of second drug outlet holes and a plurality of third drug outlet holes are further arranged on the circumferential side wall of the drug delivery tube. The second drug outlet holes and the third drug outlet holes are located between the first drug outlet hole and the drug injection port.

2. The gel applicator for uniform drug delivery according to claim 1, wherein: The second drug outlet holes are arranged in multiple rows at intervals along the axial direction of the drug delivery tube. Each row of the second drug outlet holes is arranged at intervals along the circumferential direction of the drug delivery tube.

3. The gel applicator for uniform drug delivery according to claim 2, wherein: The third drug outlet holes are arranged in multiple rows at intervals along the axial direction of the drug delivery tube. Each row of the third drug outlet holes is arranged at intervals along the circumferential direction of the drug delivery tube.

4. The gel applicator for uniform drug delivery according to claim 3, wherein: The third drug outlet holes are closer to the head end of the drug delivery tube than the second drug outlet holes. The aperture of the third drug outlet holes is smaller than the aperture of the second drug outlet holes. The aperture of the first drug outlet hole is smaller than the aperture of the third drug outlet holes.

5. The gel dispenser for uniform drug delivery according to claim 3, characterized in that: The number of the second drug outlet holes in each row is the same. The number of the third drug outlet holes in each row is the same. The number of the third drug outlet holes in each row is less than the number of the second drug outlet holes in each row.

6. The gel applicator for uniform drug delivery according to claim 1, characterized in that: A limiting component is arranged between the drug delivery tube and the push rod. The limiting component includes a limiting part and a cooperating part. The limiting part is annular and integrally formed on the inner circumferential wall of the drug delivery tube. The limiting part is located near the opening of the drug delivery tube. The cooperating part is annular and fixedly connected to the outer wall of the push rod. The inner diameter of the limiting part is smaller than the outer diameter of the cooperating part.

7. The gel applicator for uniform drug delivery according to claim 6, wherein: The inner sides of the axial two end faces of the limiting part are rounded.

8. The gel dispenser for uniform drug delivery according to claim 6, wherein: The outer sides of the axial two end faces of the cooperating part are rounded.

9. The gel applicator for uniform drug delivery according to claim 6, wherein: The cooperating part is made of a soft material.

10. The gel applicator for uniform drug administration according to claim 1, characterized in that: One end of the push rod near the front end of the drug delivery tube is arranged in an arc shape and is adapted to the head end of the drug delivery tube. A piston is arranged at one end of the push rod near the front end of the drug delivery tube. The piston wraps one end of the push rod near the front end of the drug delivery tube.

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