M261225 捌、新型說明： 〔新型所屬之技術領域〕 本創作涉及一種醫療器械附件，具體地說是一種一次 性使用安全注射器針頭。 〔先前技術〕 我們知道，注射器針頭是一種常用的醫療器具附件。 其包括針管、針管座組成。為了防止交叉感染，一次性使 用越來越受到人們的重視。但現在廣泛使用的一次性注射 器用針頭屬於管理性概念，使用性能上並不是“一次性”， 可以反復多次使用，給交叉感染留有隱患，容易引起疾病 傳播。另外，注射完畢在隨後的處理過程中，由於針頭大 多暴露在外，極易刺劃傷醫患人員，造成新的交叉感染。 由於國家標準針頭結構單一，在使用功能上受到了限制。 〔新型内容〕 本創作所要解決的技術問題是克服上述現有技術的不足，提 供一種結構簡單，使用方便、穩定，安全性能好的一次性使用安 全型注射器針頭。 本創作解決上述技術問題採用的技術方案是··一種一 次性使用安全型注射器針頭，其包括針管、針管套、針管座、 密封圈、彈簧組成，其特徵是：端部設環形臺階中心設通孔 的^官套，前通孔内安裝針管後端環形臺階套裝密封圈， 針管座中心通孔設有内空腔，針管套呈滑動插裝在針管座 通孔空腔内，由密删確保針管與針f座的密封和止推功 能0 M261225 後針推力妓㈣軸㈣，解除約束 盥配益效果是，一種一次性使用安全型注射器針頭， 座1後避免刺傷醫護人員，注射H和針頭也不能重^使 用’本創作結構簡單，使用方便、穩定性好。 〔實施方式〕 下面結合附圖和實施例對本創作進一步說明。具體實 施方式： ' 從圖一中可以看出，本創作一種一次性使用安全型注射 器針頭其包括針管1、針管套2、針管座3、内空腔4、密 封圈5,端部設環形臺階中心設通孔的針管套2，前通孔 内安裝針官1後端環形臺階套裝密封圈5，針管座3中心通 孔設有内空腔4，針管套2呈滑動插裝在針管座3通孔空腔 4内，由役封圈5確保針管套2與針管座3的密封和止推功 能。 本創作的密封圈5受推杆推力後是向内滑動結構，解除約 束後，可由推杆設有的裝置將針管套2卡住並後拉與針管座3 分離。 如圖二所示，當注射工作完成後，密封圈5受推杆推 力向内移動並解除約束，由彈簧6將針管套2彈開，與針 管座3分離，以此實現針頭和配合的注射器不能反復使用， 徹底地實現了針頭和配合的注射器僅供一次使用而自毁， 避免了針頭在使用及回收時造成交叉感染。 本創作構造簡單，使用方便、穩定性好。 M261225 〔圖式之簡單說明〕 圖一是本創作實施例的結構示意圖。 圖二是本創作一種實施例的結構示意圖。 圖號說明 1……針管 2……針管套 3 ......針管座 4 ......内空腔 5 ......密封圈 6……彈簧M261225 新型 Description of new model: [Technical field to which new model belongs] This creation relates to a medical device accessory, specifically a disposable safety syringe needle. [Prior Art] We know that syringe needles are a commonly used accessory for medical devices. It comprises a needle tube and a needle tube base. To prevent cross-infection, single use is gaining more and more attention. However, the widely used single-use syringe needles are a management concept, and the performance is not “disposable”. They can be used repeatedly, leaving hidden dangers to cross-infection and easily causing disease transmission. In addition, after the injection is completed, the needle is exposed to the outside during the subsequent treatment, which can easily puncture and scratch the doctor and patient, causing new cross infection. Because the national standard needle has a single structure, its use is limited. [New Content] The technical problem to be solved in this creation is to overcome the above-mentioned shortcomings of the prior art, and to provide a single-use safe syringe needle with a simple structure, convenient use, stability, and good safety performance. The technical solution used in this creation to solve the above technical problems is a disposable safety syringe needle, which includes a needle tube, a needle tube sleeve, a needle tube seat, a seal ring, and a spring. The outer sleeve of the needle tube is fitted with a sealing ring at the rear end of the needle tube. A central cavity of the needle tube seat is provided with an internal cavity. The needle tube sleeve is slid into the cavity of the needle tube seat through hole. The sealing and thrust function of the needle tube and needle f seat 0 M261225 The rear needle thrust prosthesis shaft is free of restraint. The benefit is that it is a disposable safety syringe needle, which avoids stabbing the medical staff behind the seat 1. You ca n’t use it again. The creation structure is simple, easy to use, and stable. [Embodiment] The following further describes this creation with reference to the drawings and embodiments. DETAILED DESCRIPTION: As can be seen from Figure 1, a single-use safety syringe needle is provided in the present invention, which comprises a needle tube 1, a needle tube sleeve 2, a needle tube holder 3, an inner cavity 4, a sealing ring 5, and an annular step at the end. Needle tube sleeve 2 with a through hole in the center, a needle ring 1 is installed in the front through hole, and a ring-shaped stepped seal ring 5 is installed at the rear end. A central cavity of the needle tube holder 3 is provided with an internal cavity 4, and the needle tube sleeve 2 is inserted into the needle tube holder 3 In the through-hole cavity 4, the sealing ring 5 ensures the sealing and thrust functions of the needle tube sleeve 2 and the needle tube base 3. The sealing ring 5 of this creation is a sliding structure inward after being pushed by the push rod. After the restriction is released, the needle tube sleeve 2 can be caught by the device provided by the push rod and pulled back to separate from the needle tube base 3. As shown in Figure 2, after the injection work is completed, the sealing ring 5 is moved inward by the thrust of the push rod and released from restraint. The needle tube sleeve 2 is springed off by the spring 6 and separated from the needle tube holder 3, thereby realizing the needle and the matched syringe. Can not be used repeatedly. The needle and the matched syringe are completely self-destructed for only one use, avoiding cross infection during the use and recovery of the needle. This creation is simple in structure, convenient to use, and good in stability. M261225 [Brief description of the drawings] Figure 1 is a schematic diagram of the structure of this creative embodiment. FIG. 2 is a schematic structural diagram of an embodiment of the present invention. Description of drawing number 1 ... Syringe 2 ... Syringe sleeve 3 ... Syringe holder 4 ... Inner cavity 5 ... Seal ring 6 ... Spring