Vaginal administration catheter combination

Abstract

The utility model provides a vaginal administration catheter combination which comprises an administration catheter and a damping cap. The catheter combination is simple in structure, can meet the requirement for small-dose administration, and can change the medicine spraying speed and the foam density of foaming agents through the catheter.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of vaginal administration catheter combinations, including administration catheter and damping cap.The utility model vaginal catheter combination can be used for vaginal administration dosage form such as aerosol, foam agent, can satisfy small-dose administration demand, and simultaneously can change drug ejection speed, change foam agent foam density. BACKGROUND

[0002] With the development and progress of society, multiple factors such as work pressure, life rhythm, environmental pollution, etc. lead to the incidence and recurrence rate of gynecological diseases showing an upward trend. There are more than 400 million patients with gynecological diseases in China, and the increase of gynecological diseases has brought huge demand for gynecological drug market.

[0003] With the expansion of gynecological drug market, gynecological administration device as a common medical device, the sales scale also grows continuously. The common gynecological administration methods on the market at present include administration device, finger sleeve administration, catheter administration, among which the administration device is to put the medicine in the administration device, carefully and gently insert it into the deep part of vagina, press down the piston, and push the medicine into the vagina. The finger sleeve administration is to cooperate with disposable finger sleeve, and the finger sends the medicine into the deep part of vagina, and the catheter administration is to insert the catheter of appropriate length into the vagina, and the medicine enters the deep part of vagina through the catheter. High-pressure packaged medicines such as aerosol and foam agent are generally administered through vaginal catheter.

[0004] The outer diameter of the conventional vaginal administration catheter on the market at present is about 4-9mm, and the inner diameter of the catheter is about 2-4mm. However, most vaginal administration preparations are small-dose administration, and the inner diameter of the conventional vaginal administration catheter is about 2-4mm, which can increase the residual amount of medicine in the tube, and the residual amount of medicine is different for each administration of the patient, which can not meet the demand of the patient in use. And the vaginal administration catheter on the market at present can only meet the demand of administration channel, and cannot change the properties of ejection, impact force, etc. SUMMARY

[0005] In view of the above problems, the utility model can solve the problem of small-dose administration of vaginal administration preparation, and can change the properties of medicine and ejection impact force through vaginal administration catheter.

[0006] The utility model discloses a vaginal administration catheter combination, including administration catheter and damping cap.

[0007] The damping cap connects to the drug delivery catheter, which features a side-flute-hole design at the tip. Medication is ejected from the connection point between the damping cap and the delivery catheter. The overall length of the damping cap ranges from 8.60 to 16.60 mm, with a cross-shaped front end forming four fan-shaped spaces—the ejection channels—ensuring simultaneous drug ejection from all four channels. The width of the front end ranges from 3.62 to 5.62 mm, with each cross-shaped section ranging from 1.21 to 1.87 mm in thickness. Each cross-shaped edge has a raised, arc-shaped protrusion with a height of 0.2–0.4 mm. The rear end of the damping cap is semi-circular. The front end length ranges from 6.90 to 10.90 mm, and the rear end length ranges from 2.7 to 5.7 mm. The front end of the damping cap is inserted into the delivery catheter and secured by the protrusion on the front edge connecting to the groove on the side edge of the delivery catheter. An approximately 0.30 mm gap exists between the delivery catheter and the damping cap after connection to facilitate drug ejection.

[0008] The drug delivery catheter connected to the damping cap has rounded ends; one end connects to the nozzle, and the other end connects to the damping cap. The diameter of the end connected to the nozzle is smaller than that of the end connected to the damping cap. The diameter ranges from 3.90 to 6.90 mm for the nozzle connection and from 6.98 to 8.98 mm for the damping cap connection. The total length of the catheter ranges from 79.80 to 109.80 mm. Inside the catheter, in the center, is a drug delivery channel. The drug is ejected from the nozzle, passes through the drug delivery channel, and is then ejected from the damping cap. The diameter of the drug delivery channel connected to the nozzle is smaller than that connected to the damping cap; the diameter ranges from 1.40 to 3.40 mm, and the length of the drug delivery channel ranges from 72.2 to 102.2 mm. The drug delivery catheter features a cylindrical groove at its connection with the damping cap. Specifically, a groove with a diameter of approximately 3.92-5.92 mm and a length of approximately 6.60-11.20 mm is located at the center of the catheter. This groove connects to the discharge channel of the damping cap, and its diameter is larger than the diameter of the drug delivery channel. A circular arc-shaped groove runs along the side edge of the cylindrical groove to secure the damping cap to the delivery catheter. The edges of the cylindrical groove are sloped and expand outwards to facilitate smooth drug discharge from the connection point.

[0009] To achieve versatility and convenience in the use of this utility model patent, multiple protrusions can be added to the front end of the damping cap, based on the existing single protrusion on each edge. During patient use, the connection position between the damping cap and the drug delivery catheter can be selected, altering the tightness of the connection. Simultaneously, the cross-shaped front end of the damping cap can be changed to other forms, thereby converting the four spray channels into multiple different numbers of spray channels, such as 2, 3, 5, or 8. These modifications can alter the properties of the sprayed drug to a certain extent; for example, if the sprayed substance is foam, the foam density can be changed. Furthermore, the spraying speed and impact force can also be altered. These modifications can be flexibly made according to the actual needs of the drug.

[0010] The materials used in this invention's vaginal delivery catheter assembly can be polypropylene, polyethylene, low-density polyethylene, or high-density polyethylene. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the vaginal drug delivery catheter assembly of this utility model.

[0012] Figure 2 This is a schematic diagram of the structure of the damping cap of this utility model.

[0013] Figure 3 This is a schematic diagram of the side structure of the damping cap of this utility model.

[0014] Figure 4 This is a schematic diagram of the increased number of protrusions at the front end of the damping cap of this utility model.

[0015] Figure 5 This is a schematic diagram of the structure of the damping cap at the front end of this utility model, which changes the number of ejection channels. Example

[0016] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0017] like Figure 1 As shown, the vaginal delivery catheter assembly consists of a delivery catheter and a damping cap. Connecting the delivery catheter and the damping cap, with the protrusion of the damping cap fitting into the groove of the delivery catheter, ensures a secure connection. The delivery catheter is then inserted into the aerosol or foam spray nozzle for use. Pressing the nozzle releases the medication through the delivery channel of the catheter from the connection between the catheter and the damping cap.

[0018] like Figure 4 As shown, the number of protrusions on each edge of the damping cap is increased to 3, which changes the tightness of the connection between the damping cap and the drug delivery catheter.

[0019] like Figure 5 As shown, the front end of the damping cap has been changed to have two drug delivery channels.

Claims

1. A vaginal drug delivery catheter assembly, characterized in that, The assembly includes a drug delivery catheter and a damping cap.

2. The vaginal drug delivery catheter assembly according to claim 1, characterized in that, The overall length of the damping cap ranges from 8.60 to 16.60 mm, the front end length ranges from 6.90 to 10.90 mm, and the rear end length ranges from 2.7 to 5.7 mm.

3. The vaginal drug delivery catheter assembly according to claim 2, characterized in that, The front end of the damping cap is the ejection channel, and the number of ejection channels can be changed by altering the shape of the front end of the damping cap.

4. The vaginal drug delivery catheter assembly according to claim 3, characterized in that, The number of discharge channels for the damping cap can be 2 to 8.

5. The vaginal drug delivery catheter assembly according to claim 1, characterized in that, The catheter tip features a side flute hole design, and the damping cap and the drug delivery catheter are connected and fixed by the protrusion on the edge of the damping cap.

6. The vaginal drug delivery catheter assembly according to claim 5, characterized in that, The edge of the damping cap is raised in an arc shape, with a height of 0.2 to 0.4 mm.

7. The vaginal drug delivery catheter assembly according to claim 5, characterized in that, The damping cap has raised edges, which may include one or more edge protrusions, ranging from 1 to 8.

8. The vaginal delivery catheter assembly according to claim 7, characterized in that, The damping cap has raised edges; if there are multiple raised edges, they are evenly distributed at the front end of the damping cap.

9. The vaginal drug delivery catheter assembly according to claim 1, characterized in that, The drug delivery catheter connected to the damping cap has two round ends. One end is connected to the nozzle, and the other end is connected to the damping cap. The diameter of the end connected to the nozzle is smaller than that of the end connected to the damping cap.

10. The vaginal drug delivery catheter assembly according to claim 9, characterized in that, The connection end between the drug delivery catheter and the damping cap has a groove design corresponding to the protrusion of the damping cap.

11. The vaginal drug delivery catheter assembly according to claim 9, characterized in that, The diameter of the end connecting the drug delivery catheter to the nozzle ranges from 3.90 to 6.90 mm, and the diameter of the end connecting to the damping cap ranges from 6.98 to 8.98 mm.

12. The vaginal drug delivery catheter assembly according to claim 9, characterized in that, The length of the drug delivery catheter ranges from 79.80 to 109.80 mm.

13. The vaginal drug delivery catheter assembly according to claim 9, characterized in that, The drug delivery catheter has a drug delivery channel in the center, through which the drug is sprayed out.

14. The vaginal drug delivery catheter assembly according to claim 13, characterized in that, The diameter of the drug delivery channel of the drug delivery catheter ranges from 1.40 to 3.40 mm.

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