Epididymal/testicular puncture sperm retrieval device

Abstract

An epididymis / testicular puncture sperm retrieval device belongs to the field of medical devices. The device comprises a fixing bracket for mounting a testis holder, a puncture needle holder and a four-way joint holder, a puncture needle with a cutting inner core and capable of achieving pressing type rotation, an adjustable vacuum extractor, an adjustable syringe pump and a squeezable small container with scales, and the latter four are connected by four-way joints and transparent hoses. A bracket rod is fixed to a base by bolts, and the testis holder is provided with a B ultrasonic probe fixing clip. The puncture needle holder is combined with an adjustable connecting rod by a needle holder and fixed on the bracket. The adjustable vacuum extractor, the adjustable syringe pump and the squeezable small container with scales are connected with the puncture needle through the hoses and the four-way joints. All components of the device can be removed and combined as required. The device is simple in operation and convenient to carry after assembly, can be operated by one person, saves human resources and reduces medical assistance accidental injury.

Description

Technical field [0001] The invention belongs to the field of medical equipment, and particularly relates to an epididymal / testicular puncture sperm extraction device, which can also be used for the extraction of other tissues / tissue fluids, and the drainage of fluid and empyema. Background technique [0002] In recent years, the number of patients with obstructive azoospermia associated with low spermatogenesis has increased significantly. This part of patients has a very successful rate of recanalization of the vas deferens because of the low spermatogenesis and the accompanying epididymitis, prostatitis, and seminal vesicle adenitis. Therefore, the choice of epididymal or testicular puncture to obtain sperm and the implementation of assisted reproductive technology is the most effective method. Sufficient high-quality sperm obtained from epididymal or testicular puncture is the key to successful assisted reproductive technology treatment. [0003] There are mainly two types of ep...

AI Technical Summary

Problems solved by technology

[0003] There are mainly two types of existing epididymis / testis puncture or biopsy devices: (1) One is to connect a syringe with a scalp needle or a syringe needle in children, and this method requires the cooperation of 2 or more people to complete the operation (that is, one person Continuous suction with both hands to give negative pressure, one person fixes the testis / epididymis, but also fixes the scalp needle / needle, there is a risk of accidental injury to the assistant; this method often causes blockage due to the small size of the scalp needle / needle Incomplete anastomosis with the tissue, resulting in too little sperm and tissue in the epididymis / testis, often requiring multiple punctures

(2) The other is biopsy needles, biopsy guns, and biopsy forceps. This method has the following problems: First, it cannot puncture the epididymis

Second, the tissue obtained by the biopsy needle and the biopsy gun is limited, and the gun is often empty, requiring multiple punctures; while the wound surface of the biopsy forceps is large and the damage is relatively large

But this device has the following disadvantages. The puncture needle of this device adopts No. 5 or No. 7 detachable needles. First, the needles are small and often blocked; There are too few sperm and tissues, and multiple punctures are often required; third, the puncture needle has only one hole in the needle head, and the inhaled tissue is limited, and multiple punctures are often required to absorb the required tissue; One hand is required for the needle, and personnel assistance is required to operate the built-in negative pressure device of the puncture cylinder. Single-person operation may easily cause the needle to fall off

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