Rat uterine cavity perfusion dosing needle

By designing a rat uterine cavity perfusion delivery needle and using the combination of a transmission tube and perfusion assembly, the problem of difficulty in intrauterine cavity administration in the prior art is solved, and the uterine cavity administration without dissecting the rat is achieved, reducing the burden on rats and experimenters.

CN222657258UActive Publication Date: 2025-03-25Zhongshan Boai Hospital (Zhongshan Maternal and Child Health Hospital, Zhongshan Maternal and Child Health and Family Planning Service Center, Zhongshan Women and Children's Hospital)
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Patent Information

Application Number
CN202420778523.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-15
Publication Date
2025-03-25
Estimated Expiration
2034-04-15

AI Technical Summary

Technical Problem

The prior art lacks equipment for direct intrauterine administration of rats, resulting in experimenters having to dissect rats, increase workload and cause stress response or damage to rats.

Method used

A rat uterine perfusion delivery needle is designed, including a transmission tube and a perfusion assembly. The perfusion assembly is arranged outside the transmission tube. It is used in combination with the connecting block and the needle tube, and does not require dissection of the rat, reducing rat damage and the workload of the experimenter.

Benefits of technology

The uterine cavity administration is achieved without dissecting the rat, reducing rat damage and the workload of experimental personnel, and at the same time, the uterine cavity administration process is facilitated by regulating the use of components.

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Abstract

The utility model relates to the technical field of uterine cavity perfusion devices, in particular to a rat uterine cavity perfusion dosing needle which comprises a transmission tube and a perfusion assembly, the perfusion assembly is arranged on the outer side of the transmission tube and comprises a connecting block, the connecting block is movably installed on the outer side of the transmission tube, a first groove is formed in one side of the connecting block, and a second groove is formed in the other side of the connecting block. The inner wall of the first groove is movably connected with the outer side of the conveying pipe, a second groove is formed in the other side of the connecting block, and one side of the second groove fixedly communicates with the other side of the first groove. According to the rat uterine cavity perfusion dosing needle, the needle tube and the round-opening needle head are used in cooperation, the rat does not need to be dissected, the rat injury condition and the workload of experimenters are reduced, the needle tube is detachable through the installed connecting block and directly matched with an injector needle cylinder for use, the injection amount is controllable, other equipment is not needed, meanwhile, the perfusion head is longer than a common injection needle head, and the operation is convenient. The device is easier to extend into the vagina of the rat, and uterine cavity administration is facilitated; and the rubber tube is sleeved outside, so that the damage to the vagina of the rat is reduced.
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