A vaginal drug delivery device for obstetrics and gynecology

Abstract

This invention discloses a vaginal drug delivery device for obstetrics and gynecology, belonging to the field of medical device technology. It includes a drug delivery sleeve, a lesion area positioning module, and a closed drug delivery module. The drug delivery sleeve includes an insertion tube and an extension tube. The extension tube is inserted into the rear end of the insertion tube to extend the length of the drug delivery sleeve inserted into the patient's vagina. In this invention, the inflatable expansion sleeve inflates and expands as it moves within the patient's vagina along with the insertion tube, allowing the patient to align and position the closed area sleeve between the two inflatable expansion sleeves at the lesion area. The closed area sleeve changes shape along with the inflatable expansion sleeve, ensuring that its outer edge remains close to the vaginal wall. A push rod directly pushes the drug from the drug delivery tube into the independent space inside the closed area sleeve, allowing the drug to accurately reach the lesion area and remain in the temporary closed space where the lesion area is located, maintaining an effective therapeutic drug concentration in the lesion area.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a vaginal drug delivery device for obstetrics and gynecology. Background Technology

[0002] Vaginal administration is a common route of drug delivery in obstetrics and gynecology for treating gynecological diseases. Clinically used vaginal delivery devices mainly consist of a tubular applicator and an internal push rod. During use, the medication is placed at the tip of the applicator, inserted to a certain depth into the vagina, and the user pushes the push rod to expel the medication. The device is then withdrawn to complete the administration. When patients administer medication themselves, they rely on touch and their own senses to determine the delivery location, which can easily lead to inaccurate delivery of the medication to the affected area. Furthermore, after the medication is expelled from the tubular applicator, the patient's position and gravity cause the medication to move within the vagina, further deviating from the affected area. This prevents the medication from effectively remaining in the affected area and maintaining an effective therapeutic concentration, thus affecting the accuracy of vaginal administration and the treatment outcome. Summary of the Invention

[0003] To overcome the aforementioned deficiencies of the prior art, this invention provides a vaginal drug delivery device for obstetrics and gynecology. It comprises a drug delivery sleeve, a lesion area positioning module, and four sealed drug delivery modules, all combined together. The inflatable expansion sleeve inflates as it moves within the patient's vagina along with the insertion sleeve, causing the inflatable expansion sleeve and its outer edge to contact the vaginal wall. This allows the patient to align and position the sealed area between the two inflatable expansion sleeves over the lesion area. The two inflatable expansion sleeves adhere tightly to the vaginal wall on both sides of the lesion area. The sealed area changes shape with the inflatable expansion sleeves, ensuring its outer edge also remains close to the vaginal wall, effectively creating an independent space within the vagina corresponding to the lesion area. A pusher propelles the drug from the delivery tube directly into this independent space within the sealed area, ensuring accurate delivery of the drug to the lesion area. The drug remains within this temporary sealed space, maintaining an effective therapeutic drug concentration in the lesion area, thus solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A vaginal drug delivery device for obstetrics and gynecology includes a drug delivery sleeve, a lesion area positioning module, and a closed drug delivery module. The drug delivery sleeve includes an insertion sleeve and an extension sleeve, the extension sleeve being inserted into the rear end of the insertion sleeve to extend the length of the drug delivery sleeve inserted into the patient's vagina. The lesion area positioning module includes a combination sleeve, an inflatable expansion sleeve, and an inflation tube. There are two inflatable expansion sleeves, which are fixed to the outside of the insertion sleeve one in front of the other via the combination sleeve. The inflation tube is fixed inside the insertion sleeve and communicates with the inflatable expansion sleeve located at the front. There are four closed drug delivery modules, which are positioned in a ring on the insertion sleeve. Each closed drug delivery module includes a drug delivery tube, a regional sealing sleeve, and a push rod. The drug delivery tube is fixed inside the insertion sleeve. The regional sealing sleeve is positioned between the two inflatable expansion sleeves via the drug delivery tube. The push rod slides on the drug delivery tube to push the drug from the regional sealing sleeve to release it into the lesion area.

[0005] Furthermore, a groove is provided at the rear end of the insertion tube, and a clip is fixedly connected to the front end of the extension tube, the clip being inserted into the groove.

[0006] Furthermore, an arc-shaped head is fixedly connected to the front end of the insertion tube, a first fixing plate is fixedly connected inside the insertion tube, a second fixing plate is fixedly connected inside the extension tube, and the inflation tube and the drug delivery tube are inserted into the first fixing plate and the second fixing plate.

[0007] Furthermore, the combined sleeve is fixedly connected to the outer wall of the insertion cylinder, and the combined sleeve is close to the arc-shaped head.

[0008] Furthermore, both of the inflatable expansion sleeves are fixedly connected to the outer wall of the combined sleeve, the front end of the inflation tube is inserted into the interior of the combined sleeve, and the front end of the inflation tube is fixedly connected to the inner wall of the inflatable expansion sleeve located at the front.

[0009] Furthermore, an outer edge rubber block is fixedly connected to the outer wall of the inflatable expansion sleeve, and four hollow connecting shells are provided between the two inflatable expansion sleeves. The two ends of the hollow connecting shells are respectively fixedly connected to the corresponding side walls of the two inflatable expansion sleeves, and the hollow connecting shells communicate with the inflatable expansion sleeves.

[0010] Furthermore, the outer wall of the area sealing sleeve is fixedly connected to the corresponding side wall of the inflatable expansion sleeve, and the front end of the drug delivery tube is inserted into the area sealing sleeve.

[0011] Furthermore, the push rod is inserted inside the drug delivery tube, and the rear end of the push rod extends outside the push rod and the extension tube.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention comprises a drug delivery sleeve, a lesion area positioning module, and four closed drug delivery modules, all combined together. The closed drug delivery modules contain the medication. The insertion sleeve, along with the lesion area positioning module and the four closed drug delivery modules, is inserted into the patient's vagina. An inflation tube connects to an external air supply unit, allowing the inflatable expansion sleeve to inflate and expand as it moves within the patient's vagina. This inflatable expansion sleeve and its outer edge rubber block contact the vaginal wall, effectively allowing the patient to perceive the insertion depth of the device. The patient can then align and position the closed sleeve between two inflatable expansion sleeves in the lesion area, thereby improving the accuracy of drug delivery.

[0013] 2. In this invention, two inflatable expansion sleeves are inflated on both sides of the lesion area to fit tightly against the vaginal wall, confining the lesion area between the two inflatable expansion sleeves. The area sealing sleeve changes shape along with the inflatable expansion sleeves, keeping its outer edge also close to the vaginal wall. This effectively creates an independent space corresponding to the lesion area within the vagina, ensuring the lesion area is completely within the independent space inside the corresponding area sealing sleeve. The medication in the administration tube is directly pushed out into the independent space inside the area sealing sleeve by the push rod, achieving targeted drug delivery. This ensures the medication accurately reaches the lesion area and remains within the temporary sealed space where the lesion area is located, effectively preventing the medication from moving away from the lesion area. This maintains an effective therapeutic drug concentration in the lesion area, improving the accuracy of intravaginal drug administration and enhancing the therapeutic effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments, the accompanying drawings will be briefly described below.

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a structural schematic diagram from another perspective of the present invention; Figure 3 This is a front view structural diagram of the present invention; Figure 4 This is a frontal cross-sectional view of the present invention. In the diagram: 1. Drug delivery sleeve; 11. Insertion tube; 111. Groove; 12. Extension tube; 121. Clip; 13. Arc-shaped head; 14. First fixing plate; 15. Second fixing plate; 2. Lesion area positioning module; 21. Combination sleeve; 22. Inflatable expansion sleeve; 221. Outer edge rubber block; 222. Hollow connecting shell; 23. Inflatable tube; 3. Sealed drug delivery module; 31. Drug delivery tube; 32. Regional sealing sleeve; 33. Push rod. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Specific mechanical structures of the present invention will be described in conjunction with the following references. Figures 1 to 4 The detailed description of the structure will be clearly presented. All structural details mentioned in the following embodiments are based on the accompanying drawings.

[0017] Please see Figures 1-4 In this embodiment of the invention, a vaginal drug delivery device for obstetrics and gynecology includes a drug delivery sleeve 1, a lesion area positioning module 2, and a closed drug delivery module 3. The drug delivery sleeve 1 includes an insertion tube 11 and an extension tube 12. The extension tube 12 is inserted into the rear end of the insertion tube 11 to extend the length of the drug delivery sleeve 1 inserted into the patient's vagina. The lesion area positioning module 2 includes a combination sleeve 21, an inflatable expansion sleeve 22, and an inflation tube 23. There are two inflatable expansion sleeves 22, which are fixed to the outside of the insertion tube 11 one in front of the other by the combination sleeve 21. The trachea 23 is fixed inside the insertion tube 11 and connected to the inflatable expansion sleeve 22 located at the front. There are four closed drug delivery modules 3, which are positioned in a ring on the insertion tube 11. Each closed drug delivery module 3 includes a drug delivery tube 31, a regional sealing sleeve 32, and a drug pusher 33. The drug delivery tube 31 is fixed inside the insertion tube 11. The regional sealing sleeve 32 is positioned between two inflatable expansion sleeves 22 through the drug delivery tube 31. The drug pusher 33 slides on the drug delivery tube 31 to push the drug from the regional sealing sleeve 32 to the lesion area.

[0018] The drug delivery sleeve 1 connects the lesion area positioning module 2 and four closed drug delivery modules 3. The drug delivery sleeve 1 consists of an insertion sleeve 11 and an extension sleeve 12. The rear end of the insertion sleeve 11 has a groove 111, and the front end of the extension sleeve 12 is fixedly connected to a locking head 121, which inserts into the groove 111 to facilitate the insertion of the extension sleeve 12 to the rear end of the insertion sleeve 11. The insertion sleeve 11 is inserted into the patient's vagina, and the extension sleeve 12, connected to the rear end of the insertion sleeve 11, extends the length of the drug delivery sleeve 1 inserted into the patient's vagina, effectively reaching different lesion areas. The front end of the insertion sleeve 11 is fixedly connected to an arc-shaped head 13 to prevent injury when the insertion sleeve 11 is inserted into the patient's vagina.

[0019] The lesion area positioning module 2 consists of a combination sleeve 21, an inflatable expansion sleeve 22, and an inflation tube 23. The combination sleeve 21 is fixedly connected to the outer wall of the insertion cylinder 11, and the combination sleeve 21 is close to the arc-shaped head 13. There are two inflatable expansion sleeves 22, and both inflatable expansion sleeves 22 are fixedly connected to the outer wall of the combination sleeve 21. The front end of the inflation tube 23 is inserted into the interior of the combination sleeve 21, and the front end of the inflation tube 23 is fixedly connected to the inner wall of the inflatable expansion sleeve 22 located at the front, stably connecting the combination sleeve 21, the inflation tube 23, and the two inflatable expansion sleeves 22. This allows the two inflatable expansion sleeves 22 to be stably connected to the outside of the insertion cylinder 11 near the arc-shaped head 13 through the combination sleeve 21, so that the inflatable expansion sleeves 22 can stably enter the patient's vagina along with the insertion cylinder 11. A first fixing plate 14 is fixedly connected inside the insertion tube 11, and a second fixing plate 15 is fixedly connected inside the extension tube 12. An inflation tube 23 is inserted into the first fixing plate 14 and the second fixing plate 15, stably connecting the inflation tube 23 inside the insertion tube 11. The rear end of the inflation tube 23 can be connected to an external air supply device to inject gas into the inflation tube 23, allowing the gas to enter the inflatable expansion sleeve 22 at the front position and inflate it. Four hollow connecting shells 222 are provided between the two inflatable expansion sleeves 22. The two ends of each hollow connecting shell 222 are fixedly connected to the corresponding sidewalls of the two inflatable expansion sleeves 22, stably connecting and communicating with each other. The inflatable expansion sleeve 22 in the front position inflates, and through the hollow connecting shell 222, gas can be guided into the inflatable expansion sleeve 22 in the rear position, causing the rear inflatable expansion sleeve 22 to also inflate, facilitating the adjustment of the two inflatable expansion sleeves 22 on the outside of the insertion tube 11. An outer edge rubber block 221 is fixedly connected to the outer wall of the inflatable expansion sleeve 22, improving the smoothness and safety of the lesion area positioning module 2 following the drug delivery sleeve 1 into the patient's vagina.

[0020] The closed drug delivery module 3 consists of a drug delivery tube 31, a regional sealing sleeve 32, and a push rod 33. The outer wall of the regional sealing sleeve 32 is fixedly connected to the corresponding side wall of the inflatable expansion sleeve 22, stably connecting the regional sealing sleeve 32 between the two inflatable expansion sleeves 22. The front end of the drug delivery tube 31 is inserted into the regional sealing sleeve 32, and the drug delivery tube 31 is inserted into the first fixing plate 14 and the second fixing plate 15, stably connecting the drug delivery tube 31 to the inside of the insertion cylinder 11. The drug is placed inside the drug delivery tube 31, and the push rod 33 is inserted into the drug delivery tube 31. The rear end of the push rod 33 extends to the outside of the extension cylinder 12, so that the user can push the push rod 33 to push the drug into the regional sealing sleeve 32 inside the drug delivery tube 31, and then the regional sealing sleeve 32 releases the drug into the lesion area. There are four closed drug delivery modules 3, which are positioned in a ring on the insertion cylinder 11 to effectively address different lesion areas.

[0021] The drug delivery sleeve 1, the lesion area positioning module 2, and the four closed drug delivery modules 3 are combined to form a complete vaginal drug delivery device. The push rod 33 detaches from the drug delivery tube 31, allowing the drug to be placed inside. After the drug is temporarily stored in the tube 31, the push rod 33 is reinserted into the tube 31. The insertion cylinder 11, along with the lesion area positioning module 2 and the four closed drug delivery modules 3, is inserted into the patient's vagina. The inflation tube 23 connects to an external air supply, allowing the inflation expansion sleeve 22 to inflate and expand as the insertion cylinder 11 moves within the patient's vagina. This inflatable expansion sleeve 22 and the outer edge rubber block 221 contact the vaginal wall, effectively allowing the patient to perceive the insertion depth and align the lesion area between the two inflation expansion sleeves 22. This alignment and positioning of the closed sleeve 32 within the lesion area improves the accuracy of drug delivery.

[0022] Two inflatable expansion sleeves 22 are inflated on both sides of the lesion area to fit tightly against the vaginal wall, confining the lesion area between the two inflatable expansion sleeves 22. The area sealing sleeve 32 changes shape along with the inflatable expansion sleeves 22, keeping its outer edge also close to the vaginal wall, effectively creating an independent space corresponding to the lesion area within the vagina, ensuring the lesion area is completely within the independent space inside the corresponding area sealing sleeve 32. The medication in the administration tube 31 is directly pushed out by the push rod 33 into the independent space inside the area sealing sleeve 32, achieving targeted drug delivery. This ensures the medication accurately reaches the lesion area and remains within the temporary sealed space, effectively preventing the medication from moving away from the lesion area and maintaining an effective therapeutic drug concentration in the lesion area, improving the accuracy of intravaginal drug administration and enhancing the treatment effect.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A vaginal drug delivery device for obstetrics and gynecology, characterized in that, It includes a drug delivery sleeve (1), a lesion area positioning module (2), and a closed drug delivery module (3). The drug delivery sleeve (1) includes an insertion tube (11) and an extension tube (12). The extension tube (12) is inserted into the rear end of the insertion tube (11) to extend the length of the drug delivery sleeve (1) inserted into the patient's vagina. The lesion area positioning module (2) includes a combination sleeve (21), an inflatable expansion sleeve (22), and an inflation tube (23). There are two inflatable expansion sleeves (22). The two inflatable expansion sleeves (22) are fixed to the outside of the insertion cylinder (11) one in front and one behind through the combination sleeve (21). The inflation tube (23) is fixed inside the insertion cylinder (11) and connects to the inflatable expansion sleeve (22) in the front position. The number of the closed drug delivery modules (3) is four. The four closed drug delivery modules (3) are positioned in a ring on the insertion cylinder (11). The closed drug delivery module (3) includes a drug delivery tube (31), a regional sealing sleeve (32) and a drug pusher (33). The drug delivery tube (31) is fixed inside the insertion cylinder (11). The regional sealing sleeve (32) is positioned between two inflatable expansion sleeves (22) through the drug delivery tube (31). The drug pusher (33) slides on the drug delivery tube (31) to push the drug from the regional sealing sleeve (32) to the lesion area.

2. The vaginal drug delivery device for obstetrics and gynecology according to claim 1, characterized in that, The insertion tube (11) has a groove (111) at its rear end, and the extension tube (12) has a clip (121) fixedly connected to its front end. The clip (121) is inserted into the groove (111).

3. The vaginal drug delivery device for obstetrics and gynecology according to claim 1, characterized in that, The front end of the insertion tube (11) is fixedly connected to an arc-shaped head (13), the inside of the insertion tube (11) is fixedly connected to a first fixing plate (14), the inside of the extension tube (12) is fixedly connected to a second fixing plate (15), and the inflation tube (23) and the drug delivery tube (31) are inserted into the inside of the first fixing plate (14) and the second fixing plate (15).

4. A vaginal drug delivery device for obstetrics and gynecology according to claim 3, characterized in that, The combined sleeve (21) is fixedly connected to the outer wall of the insertion tube (11), and the combined sleeve (21) is close to the arc-shaped head (13).

5. A vaginal drug delivery device for obstetrics and gynecology according to claim 1, characterized in that, Both of the inflatable expansion sleeves (22) are fixedly connected to the outer wall of the combined sleeve (21), the front end of the inflation tube (23) is inserted into the inside of the combined sleeve (21), and the front end of the inflation tube (23) is fixedly connected to the inner wall of the inflatable expansion sleeve (22) located in the front position.

6. A vaginal drug delivery device for obstetrics and gynecology according to claim 1, characterized in that, The outer wall of the inflatable expansion sleeve (22) is fixedly connected with an outer edge rubber block (221). Four hollow connecting shells (222) are provided between the two inflatable expansion sleeves (22). The two ends of the hollow connecting shells (222) are respectively fixedly connected to the corresponding side walls of the two inflatable expansion sleeves (22). The hollow connecting shells (222) are connected to the inflatable expansion sleeves (22).

7. A vaginal drug delivery device for obstetrics and gynecology according to claim 1, characterized in that, The outer wall of the area sealing sleeve (32) is fixedly connected to the corresponding side wall of the inflatable expansion sleeve (22), and the front end of the drug delivery tube (31) is inserted into the area sealing sleeve (32).

8. A vaginal drug delivery device for obstetrics and gynecology according to claim 1, characterized in that, The push rod (33) is inserted into the drug delivery tube (31), and the rear end of the push rod (33) extends to the outside of the push rod (33) and the extension tube (12).

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