A radial drug delivery device for anorectal surgery

By designing a radial doser for anorectal surgery, the expansion ring is used to increase the gap between the doser and the intestinal surface, and preventing blockage by sealing the barrel, the problem of the traditional Chinese medicine liquid flowing into the depths and waste in the prior art is solved, and more efficient drug liquid distribution and drug application effect is achieved.

CN119499524BActive Publication Date: 2025-05-23ZHEJIANG BAICHUANG HEALTH TECH CO LTD
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Patent Information

Application Number
CN202411689689.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-05-23
Estimated Expiration
2044-11-25

AI Technical Summary

Technical Problem

When the injection amount of the existing anorectal drug delivery device increases, some of the drug delivery liquid flows into the deep anorectum and causes discomfort, and the drug delivery device flows out of the anus and causes waste. The drug delivery device is in close contact with the inner wall of the intestine, which causes some lesions to be unable to contact the drug delivery liquid.

Method used

A radial doser for anorectal surgery is designed to increase the gap between the injection cartridge and the intestinal surface by the expansion of the first expansion ring and the second expansion ring, so that the liquid sprayed by the first nozzle can be distributed on the intestinal surface, and prevent foreign objects from being blocked through the sealing cartridge and spring mechanism.

Benefits of technology

It effectively avoids the problem of the fluid flowing into the depths of the anus and the anus, reduces the waste of the fluid, and improves the contact area of ​​the fluid and the effect of the medicine.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to the technical field of drug delivery devices, and discloses a radial drug delivery device for anorectal surgery, the drug delivery device comprising a drug injection barrel, a drug delivery tube fixed in the drug injection barrel, a plurality of first circular holes provided on the circumferential surface of the drug injection barrel, a plurality of equally spaced drug outlets provided on the drug delivery tube, a first nozzle provided in the first circular hole, the first nozzle slidably connected to the drug outlet, a sealing barrel slidably connected to the drug injection barrel, one end of the sealing barrel being elastically connected to the drug injection barrel via a first spring, a plurality of second circular holes provided on the sealing barrel; the first nozzle is convenient for spraying the drug solution when working, and foreign matter is prevented from clogging the first nozzle and affecting the spraying effect; the first expansion ring and the second expansion ring can increase the gap between the drug injection barrel and the intestinal surface after expansion, so that the drug solution sprayed by the first nozzle can be distributed on the anorectal surface, thereby improving the drug application effect.
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Claims

1. A radial drug delivery device for anorectal surgery, comprising a drug injection cartridge (1), characterized in that: A drug delivery tube (2) is fixed in the drug injection barrel (1), a plurality of first circular holes (3) are provided on the circumferential surface of the drug injection barrel (1), a plurality of drug delivery ports (4) are provided on the drug delivery tube (2) at equal intervals, a first nozzle (5) is provided in the first circular hole (3), the first nozzle (5) is slidably connected to the drug delivery port (4), a sealing barrel (6) is slidably connected to the drug injection barrel (1), one end of the sealing barrel (6) is elastically connected to the drug injection barrel (1) via a first spring (7), and a plurality of second circular holes (30) are provided on the sealing barrel (6); A first clamping groove (8) is provided on one side of the drug injection barrel (1), a first expansion ring (9) is provided in the first clamping groove (8), a piston assembly for inflating the first expansion ring (9) is provided on the drug administration tube (2), a plurality of resistance assemblies are provided in the first clamping groove (8), the resistance assemblies are in resistance with the first expansion ring (9), the resistance assemblies are slidably connected to the drug injection barrel (1), a first resistance strip (10) is fixed on the sealing barrel (6), the first resistance strip (10) is slidably connected to the drug injection barrel (1), a mounting frame (11) is fixed on the drug injection barrel (1), a resistance seesaw (12) is provided between the first resistance strip (10) and the resistance assembly, the resistance seesaw (12) is elastically connected to the mounting frame (11) via a first torsion spring (13).

2. The radial applicator for anorectal surgery according to claim 1, characterized in that: A second clamping groove (14) is provided at the other end of the drug injection barrel (1), a hollow ring block (141) is provided on one side of the second clamping groove (14), the hollow ring block (141) is fixed on the drug injection barrel (1), a second expansion ring (15) is provided in the second clamping groove (14), a rotary valve (16) is fixed in the hollow ring block (141), a water inlet of the rotary valve (16) is connected to the drug administration tube (2), and a water outlet of the rotary valve (16) is connected to the second expansion ring (15), a plurality of limiting wedge blocks (151) are provided in the second clamping groove (14), and the limiting wedge blocks (151) are elastically connected to the hollow ring block (141) via a second spring (152).

3. The radial applicator for anorectal surgery according to claim 2, characterized in that: The piston assembly comprises a hollow telescopic piston rod (201), the hollow telescopic piston rod (201) being slidably connected to the drug injection barrel (1), a piston plate (202) being slidably connected inside the drug administration tube (2), the piston plate (202) being fixedly connected to one end of the hollow telescopic piston rod (201), and the piston plate (202) being elastically connected to the drug injection barrel (1) via a third spring (203).

4. The radial applicator for anorectal surgery according to claim 3, characterized in that: The resistance assembly comprises a resistance rod (81), wherein the resistance rod (81) is elastically connected to the drug injection barrel (1) via a fourth spring (82), one end of the resistance rod (81) is in resistance with the resistance seesaw (12), and a first resistance wedge (83) is fixed to the other end of the resistance rod (81), and one end of the first resistance wedge (83) is in resistance with the first expansion ring (9).

5. The radial applicator for anorectal surgery according to claim 4, characterized in that: A first soft tentacle (17) is provided at one end of the drug injection barrel (1), the first soft tentacle (17) being threadedly connected to one end of the drug injection barrel (1) via a first threaded ring (31), and a plug (18) for sealing the hollow telescopic piston rod (201) is provided on the first soft tentacle (17).

6. The radial applicator for anorectal surgery according to claim 5, characterized in that: The first nozzle (5) is provided with a strip-shaped connecting block (19), the strip-shaped connecting block (19) being elastically connected to the drug delivery tube (2) via a fifth spring (20), and a second contact wedge (21) being provided at one end of the contact rod (81), the second contact wedge (21) being fixed on the first nozzle (5).

7. The radial applicator for anorectal surgery according to claim 6, characterized in that: A rack (22) is slidably connected to the hollow ring block (141), a third abutting wedge (23) is fixed to one end of the rack (22), a fourth abutting wedge (24) is fixed to one of the first nozzles (5), the third abutting wedge (23) abuts against the fourth abutting wedge (24), a sixth spring (25) is connected between the rack (22) and the hollow ring block (141), a valve stem (26) is provided on the rotary valve (16), a gear (27) is fixed to the valve stem (26), and the gear (27) and the rack (22) are meshed with each other.

8. The radial applicator for anorectal surgery according to claim 7, characterized in that: The hollow telescopic piston rod (201) comprises a first hollow rod (2011), the first hollow rod (2011) being slidably connected to the drug injection barrel (1), and one end of the first hollow rod (2011) being fixedly connected to the piston plate (202), the other end of the first hollow rod (2011) being slidably connected to a second hollow rod (2013), and a seventh spring (2012) being connected between the first hollow rod (2011) and the second hollow rod (2013).

9. The radial applicator for anorectal surgery according to claim 8, characterized in that: The drug delivery device further comprises a second soft tentacle head (28) and a second nozzle (29), wherein the second nozzle (29) is threadedly connected to the second hollow rod (2013), the second soft tentacle head (28) comprises a connecting seat (281), the connecting seat (281) is threadedly connected to one end of the drug injection barrel (1) via a second threaded ring (32), a cone piece (282) is rotatably connected to the connecting seat (281), a second torsion spring (284) is connected between the cone piece (282) and the connecting seat (281), a contact frame (283) is fixed to the cone piece (282), and the contact frame (283) contacts the second nozzle (29).

Citation Information

Patent Citations

  • Medical gynecological medicine applicator

    CN112107784A

  • Clinical jet type medicine applying device for obstetrics and gynecology department

    CN221981368U