CN210009505U - Drug delivery device for urethral injection - Google Patents

Abstract

The utility model discloses a drug delivery apparatus for urethral injection for be connected with the injection cylinder, inject medicine-carrying solution, medicine-carrying viscidity mucilage or gel and carry out the treatment to urinary tract system. The utility model discloses a following major structure: the administration catheter, the conical plug and the syringe connector are integrally formed or movably connected; the drug delivery catheter is of a cylindrical structure; the connecting end of the conical plug and the administration catheter is of a conical frustum structure, and the other end of the conical plug and the administration catheter is of a cylindrical structure; the syringe connector is arranged at one end of the cylindrical structure of the conical plug or inside the conical plug; and channels are arranged inside the administration catheter, the conical plug and the syringe connector. The utility model has the advantages that: novel structure, accurate control dose of dosing can independently carry out the urethra injection by the patient and dose, and secondary injury when sanitary safety and avoiding adding medicine to easily production and popularization simultaneously.

Description

Drug delivery device for urethral injection

technical field

The utility model belongs to the field of medical devices, in particular to a medical drug delivery device for urethral injection and drug delivery.

Background technique

At present, for the treatment of urinary tract infection in men or women, the commonly used treatment methods include oral drugs, topical drugs or subcutaneous injections and the use of catheters for urethral administration. The curative effect often fails to achieve the expected goal or the side effects are caused by the large dose of the drug; if the drug is administered by subcutaneous injection or a catheter is inserted into the human urethra for drug administration, it will bring pain and bad treatment experience to the patient. Both subcutaneous injection and catheter insertion cannot be performed by individuals, and require professional medical staff to operate, and the hospital is dominated by female medical staff. An awkward experience with each other.

Now with the development of technology and the increase of people's requirements for treatment conditions, various types of male urethral drug delivery devices or devices have appeared on the market, including urethral injection drug delivery devices with complex engineering designs, and combinations of catheters and plastic ampoules. There are also individually designed urethral drug delivery devices for drug delivery devices, but they all have various related shortcomings, such as high cost, which cannot be afforded by ordinary patients; the inability to accurately control the drug dosage and affect the therapeutic effect; unreasonable intraurethral catheter design, Rough material, rubbing against the urethral mucosa during administration brings pain to the patient.

Therefore, there is currently a lack of a male or female urethral drug delivery device with a simple structure, low price, independent operation, accurate drug delivery, easy promotion, painless or reduced pain for patients on the market. to solve and avoid these problems.

Utility model content

The purpose of the present utility model is to provide a new type of drug delivery device for urethral injection, which can achieve precise control of the drug dosage during urethral injection drug treatment, avoid catheter stimulation and damage to the urethral mucosa, and ensure the safety of drug administration. health.

The utility model can realize the independent administration of the patient according to the instruction of the manual or the simple instruction of the medical staff, and avoid the emotional embarrassment caused by the exposure or contact of the private parts of the patient and the medical staff. Or administer medicine by a medical staff when the patient cannot perform the operation, the operation is simple and clear, and the workload of the medical staff is reduced.

In order to achieve the above purpose, the present invention provides the following technical solutions: a drug delivery device for urethral injection, comprising: an integrated or movably connected drug delivery catheter, a conical plug and a syringe connector; the drug delivery catheter is The cylindrical structure; the connecting end of the conical plug and the drug delivery catheter is a truncated cone structure, and the other end is a cylindrical structure; the syringe connecting head is arranged at one end of the cylindrical structure of the conical plug or inside the conical plug; so A channel is provided inside the drug delivery catheter, the conical plug and the syringe connector.

The above-mentioned middle administration catheter is used for inserting into the urethra and the medicine is extruded; the above-mentioned middle conical plug is used for blocking the urethral orifice; the above-mentioned middle syringe connecting head is used for connecting a fixed syringe as a medicinal liquid inlet.

As a further improvement of the present utility model, the open end of the drug delivery catheter has a smooth arc structure, and the radius of the arc structure is 0.1-4mm to prevent the stinging pain caused by the insertion of the sharp drug head into the urethra.

As a further improvement of the present invention, the drug delivery catheter is flexible in texture, and the drug delivery catheter is smooth and rounded without sharp edges and corners through a special grinding process, which greatly reduces the friction between the drug delivery catheter and the urethral mucosa during drug application. mucosal damage, prevent infection, and bring pain to patients.

As a further improvement of the present invention, in the drug delivery device for urethral injection, the drug delivery catheter is 1-20mm in length, 1-16mm in outer diameter, 1-8mm in diameter of the middle hole, and 0.5-8mm in thickness; further Preferably, the length of the drug delivery catheter is 1-10mm, the outer diameter is 1-8mm, the diameter of the middle hole is 1-4mm, and the thickness is 0.5-4mm, which reduces the residual amount of the drug solution in the device pipeline and ensures the stability of the drug dose. sex.

As a further improvement of the present invention, the taper angle of the conical plug and the connecting end of the drug delivery catheter is 6-40°, and the length of the cylindrical structure is 3-50mm; more preferably, the taper angle is 10-15°, wherein the cylindrical structure is 10-15°. The length of the body structure is 7-20mm, which controls the depth of catheter insertion into the urethra and prevents the liquid spillage during injection, ensuring the accuracy of the dose and the therapeutic effect; and the surface of the conical plug adopts the same polishing process as the drug delivery catheter, which is smooth and round. , to avoid mucosal damage caused by friction at the external urethra.

As a further improvement of the present invention, the cylindrical surface of the cylindrical structure of the conical plug is provided with a strip-shaped convex structure along the axial direction, which is convenient for the design and protection of the cover, and at the same time increases the friction between the cover and the drug delivery device. It avoids the internal rotation of the cover and the drug delivery device when the hand cover is screwed on the syringe, and ensures that the surface of the drug head is clean and hygienic and the drug head and the syringe are tightly fixed.

As a further improvement of the present invention, the connecting head and the syringe are fixed by threaded connection to prevent the drug delivery head and the syringe from falling off during the drug delivery process due to internal pressure or external operation reasons, and to ensure the treatment The safety and precise control of the administered dose during the process.

As a further improvement of the present invention, the connection between the syringe connector and the syringe includes but is not limited to hot-melt connection, interference connection, mechanical snap connection, and threaded connection. It is more preferable to connect and fix the syringe luer structure through threads. It can be integrally formed with the syringe (drug storage tube) under a specific process.

As a further improvement of the present invention, the channel of the syringe connector is a cylindrical or frustoconical structure.

As a further improvement of the present invention, the port of the syringe connector meets the standard GB-T 1962.1-2015 or the standard GB-T 1962.2-2016 of the 6% Luer conical connector.

As a further improvement of the present invention, after removing the connecting head of the syringe, the device can be integrally formed with the syringe (drug storage tube) during production.

As a further improvement of the present invention, the drug delivery device materials are various rigid or semi-rigid solid materials with good adaptability to the human body during the treatment process.

As a further improvement of the present invention, the solid material of the drug delivery device is selected from a single or any kind of mixed materials including metal, glass, plastic, rubber, and latex.

As a further improvement of the present invention, the material of the drug delivery device is one or more polymer materials in a mixture.

As a further improvement of the present invention, the polymer material has good thermoplasticity, thermosetting or flexibility.

As a further improvement of the present invention, the polymer material is polytetrafluoroethylene (PTFE), polypropylene (PP), polyethylene (PE), polycarbonate (PC), polyvinyl chloride (PVC), polyester One or more mixtures of polymer materials such as (PR), rubber and latex.

As a further improvement of the present utility model, the drug delivery device for urethral injection is made of polypropylene material, and is produced by selecting the best polypropylene particle raw material. At the same time, the material has good adaptability to the human body and is easy for patients to accept and use.

As a further improvement of the present invention, the drug delivery device for urethral injection can be produced by traditional die-casting technology or by 3D printing technology. The production methods are diversified, and the production process can be adjusted at any time according to cost calculation to ensure production. and product price stability.

As a further improvement of the present invention, the drug delivery device for urethral injection can inject auxiliary therapeutic components such as active drugs or contrast agents into the urethra in the form of solution, glue, gel, and gas through external pressure, and more Further, the injection dosage forms are mainly solution, mucilage and gel.

The device has the advantages of simple structure, good material adaptability to the human body, precise control of the dosage, and can satisfy the operation of single-patient urethral injection. The device is not limited to urethral administration of male adults or children, and can also be used by female adults or children under certain circumstances, and is not limited to urethral administration, but can also be used for rectal administration. The device can optimize and adjust the structure according to the actual user and the treatment mode, so as to increase the treatment effect.

The beneficial effects of the utility model are as follows: the utility model is convenient to use and has strong practicability, and can be administered by urethral injection independently by patients, thereby avoiding embarrassment between medical staff and patients. The unique structural design and production process avoid frictional damage to the patient's urethral mucosa or stinging of the corpus cavernosum when the drug is applied. The tapered plug reasonably controls the length of the drug delivery catheter entering the urethra and blocks the urethral orifice, so as to precisely control the drug dosage. The cylindrical structure of the conical plug and the strip-shaped convex structure on the cylindrical structure ensure the sealing and preservation of the cover and the drug delivery device, increase the friction between the two, and ensure that the connection is tightened and used when connecting the syringe. Health and Safety. To sum up, the utility model has the advantages of novel structure, precise control of the dosage, sanitation and safety, and avoidance of secondary injury during drug application, and is easy to produce and popularize.

Description of drawings

1 is a cross-sectional view of an embodiment of the present utility model;

Figure 2 is a view of one end of the drug delivery catheter of the embodiment in Figure 1;

Fig. 3 is the three-dimensional schematic diagram of the embodiment of the present utility model;

4 is a cross-sectional view of another embodiment of the present utility model;

Fig. 5 is the connection schematic diagram of the embodiment of the present utility model and the syringe;

In the figure: 1. Medication catheter; 2. Conical plug; 3. Syringe connector; 4. Channel; 5. Strip-shaped raised structure;

6. Cover.

Detailed ways

Example 1

As shown in Figure 1, the preferred structure of the present utility model is as follows: a device for administering medicine through the external opening of the urethra, comprising an integrally formed drug delivery catheter 1, a conical plug 2 and a syringe connector 3, and the overall structure is integrally formed; A channel 4 is provided inside the drug delivery catheter 1 , the conical plug 2 and the syringe connector 3 . The material of the device is polypropylene; the drug delivery catheter 1 is a cylindrical structure with a length of 7mm, an outer diameter of 6mm, an inner diameter of 2.4mm, a thickness of 1.8mm, and the radius of the arc structure set at the open end of the drug delivery catheter 1 is 1mm , the connecting end of the conical plug 2 and the drug delivery catheter 1 is a truncated cone structure, and the other end is a cylindrical structure, the cone angle of the conical plug 2 and the connecting end of the drug delivery catheter 1 is 13°, and the cylindrical structure is 6mm long, and The cylindrical surface of the cylindrical structure is provided with a strip-shaped convex structure 5, which is closely fitted with the sleeve cover 6; the syringe connector 3 is arranged at one end of the cylindrical structure of the conical plug 2; the syringe connector 3 meets 6% The luer syringe connection port is the national standard; the hole diameter of channel 4 at the drug delivery catheter 1 is 2.4mm, and the hole diameter of channel 5 at the syringe connector 3 is 6% of the diameter of the luer syringe.

Example 2

As shown in Figure 4, the preferred structure of the present utility model is as follows: a device for administering medicine through the external opening of the urethra, including an integrally formed drug delivery catheter 1, a conical plug 2 and a syringe connector 3, and the overall structure is integrally formed; A channel 4 is provided inside the drug delivery catheter 1 , the conical plug 2 and the syringe connector 3 . The material of the device is polypropylene; the drug delivery catheter 1 is a cylindrical structure with a length of 7mm, an outer diameter of 6mm, an inner diameter of 2.4mm, a thickness of 1.8mm, and the radius of the arc structure set at the open end of the drug delivery catheter 1 is 1mm , the connecting end of the conical plug 2 and the drug delivery catheter 1 is a truncated cone structure, the other end is a cylindrical structure, the cone angle of the conical plug 2 and the connecting end of the drug delivery catheter 1 is 15°, and the cylindrical structure is 15mm long, and The cylindrical surface of the cylindrical structure is provided with a strip-shaped convex structure 5, which is closely fitted with the cover 6; the syringe connector 3 is arranged inside the cylindrical structure of the conical plug 2; the syringe connector 3 meets 6% The luer syringe connection port is the national standard; the hole diameter of channel 4 is 2.4mm at the drug delivery catheter 1, and the hole diameter of channel 5 at the syringe connector 3 is 6% of the diameter of the luer syringe.

The concrete operation of the present utility model is as follows:

Routine hand washing and disinfection. Unpack the device according to the instructions, hold on the cover 6, align the syringe connector 3 with the head of the 6% Luer syringe filled with the liquid medicine, and rotate clockwise or counterclockwise (the specific rotation direction is the same as the direction of the hand-held syringe). related), the connection is tightened, and the cover 6 is pulled out. The thumb, ring finger and little finger of the left hand hold the front of the penis, and the index finger and middle finger hold the cylindrical structure of the conical plug 2 of the instrument, and insert the drug delivery catheter 1 into the urethra. Gently press the conical plug 2 on the external opening of the urethra to block the opening of the urethra, hold it down with the left hand, and gently push the plunger of the syringe with the right hand to slowly inject the liquid medicine for administration.

Claims (10)

1. a drug delivery device for urethral injection, characterized in that, comprising: a drug delivery catheter, a conical plug and a syringe connector that are integrally formed or flexibly connected; the drug delivery catheter is a cylindrical structure; the cone The connecting end of the plug and the drug delivery catheter is a truncated cone structure, and the other end is a cylindrical structure; the syringe connector is arranged at one end of the cylindrical structure of the conical plug or inside the conical plug; the drug delivery catheter, the conical plug Channels are provided inside the head and the syringe connector. 2 . The drug delivery device for urethral injection according to claim 1 , wherein the open end of the drug delivery catheter is a smooth arc structure. 3 . 3 . The drug delivery device for urethral injection according to claim 2 , wherein the radius of the arc structure is 0.1-4 mm. 4 . 4. The drug delivery device for urethral injection according to claim 1, wherein the drug delivery catheter is 1-20mm in length, 1-16mm in outer diameter, 1-8mm in inner diameter, and 0.5-8mm in thickness . 5. The drug delivery device for urethral injection according to claim 4, wherein the drug delivery catheter is 1-10mm in length, 1-8mm in outer diameter, 1-4mm in inner diameter, and 0.5-4mm in thickness . 6 . The drug delivery device for urethral injection according to claim 1 , wherein the taper angle between the conical plug and the connecting end of the drug delivery catheter is 6-40°, and the length of the cylindrical structure is 3-40°. 7 . 50mm. 7. The drug delivery device for urethral injection according to claim 6, wherein the taper angle between the conical plug and the connecting end of the drug delivery catheter is 10-15°, and the length of the cylindrical structure is 7-15°. 20mm. 8 . The drug delivery device for urethral injection according to claim 1 , wherein the cylindrical surface of the cylindrical structure of the conical plug is provided with a strip-shaped convex structure along the axial direction. 9 . 9 . The drug delivery device for urethral injection according to claim 1 , wherein the connection between the syringe connector and the syringe includes hot melt connection, interference connection, mechanical snap connection, and threaded connection. 10 . 10 . The drug delivery device for urethral injection according to claim 1 , wherein the channel of the syringe connector is a cylindrical or frustum structure. 11 .

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