TWI602591B - Safety needle - Google Patents
Safety needle Download PDFInfo
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- TWI602591B TWI602591B TW105111761A TW105111761A TWI602591B TW I602591 B TWI602591 B TW I602591B TW 105111761 A TW105111761 A TW 105111761A TW 105111761 A TW105111761 A TW 105111761A TW I602591 B TWI602591 B TW I602591B
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Description
本發明係有關一種注射用之針具，尤指一種可有效針扎事件發生進而減少血液傳染機率的安全針具。 The invention relates to a needle for injection, in particular to a safety needle which can effectively cause a needle sticking event and thereby reduce the probability of blood infection.
血液傳染主要係透過血液、傷口的感染方式，將病原傳染至另一個個體，例如B型肝炎、C型肝炎及後天免疫缺乏症候群(愛滋病)均可透過血液傳染，而血液傳染的發生常見於醫療使用的注射器材所導致，以及捐血與輸血時的捐贈者與接受者檢驗不足或疾病的空窗期所造成。 Blood infection mainly spreads the pathogen to another individual through blood and wound infection. For example, hepatitis B, hepatitis C and acquired immunodeficiency syndrome (AIDS) can be transmitted through blood, and blood infection is common in medical treatment. Caused by the use of injection equipment, as well as the empty window period of donors and recipients during blood donation and blood transfusions.
根據衛生福利部統計，台灣護理人員每年每人發生近1.2-2.8次針扎，其中，污染性針扎(遭使用後之注射器具扎傷)則介於0.7-0.9次/年，而依照國內外研究報告指出透過針扎而導致的血液感染中，B型肝炎的感染率約為6-40%，C型肝炎為0-10%，後天免疫缺乏症候群則為0.3-0.5%，因此，為了維護醫護人員的工作安全與健康，中華民國醫療法第56條規定自101年起，每年內按比例逐步完成全面提供安全針具。 According to the statistics of the Ministry of Health and Welfare, Taiwan’s nursing staff has nearly 1.2-2.8 needles per person per year. Among them, the contaminated needles (the wounds of the syringes after use) are between 0.7-0.9 times/year, and according to the domestic The foreign research report pointed out that the blood infection caused by needle sticking has an infection rate of about 6-40% for hepatitis B, 0-10% for hepatitis C, and 0.3-0.5% for acquired immunodeficiency syndrome. Therefore, To maintain the safety and health of medical staff, Article 56 of the Republic of China Medical Law stipulates that since the year of 101, the safety needles will be fully provided in proportion every year.
市面上的安全針具種類眾多，例如中華民國第M465177號「點滴注射裝置之安全針頭結構」新型專利案、中華人民共和國第CN203564613號「安全自毀注射器的改良結構」實用新型專利案、中華民國第M485055號「安 全針筒」新型專利案及中華民國第M475287號「安全靜脈留置針」新型專利案..等。 There are many types of safety needles on the market, such as the new patent case of "Safety Needle Structure of Drip Injection Device" of the Republic of China No. M465177, the "Practical Structure of Safe Self-Destructing Syringe" of the People's Republic of China, No. CN203564613, Utility Model Patent Case, Republic of China No. M485055 "Ann The new patent case of the whole syringe and the new patent case of the "Safe Vein Indwelling Needle" of the Republic of China No. M475287.
然而，中華民國第M465177號「點滴注射裝置之安全針頭結構」新型專利案為一種回拉式安全針結構，而中華人民共和國第CN203564613號「安全自毀注射器的改良結構」實用新型專利案為一種自毀性安全針結構，此兩種回拉式安全針結構及自毀性安全針結構在操作上相當複雜，若操作過程中施力不當，反而容易造成針扎事件發生，另外中華民國第M485055號「安全針筒」新型專利案為利用彈性元件或使用彈性原理之安全針結構，此種結構使用彈性元件時，由於後座力過大，操作不易，且容易染污及造成病患疼痛，因此非一良善之設計，再者，中華民國第M475287號「安全靜脈留置針」新型專利案為針罩式安全針結構，此種針罩式安全針結構由於結構複雜，導致其生產成本較高，因此一般醫療場所為考量成本，通常並不會選擇此種高成本之安全針結構。 However, the new patent case of the Republic of China No. M465177 "Safety Needle Structure for Drip Injection Device" is a pull-back safety needle structure, and the utility model patent of the "Improved Structure of Safe Self-Destructing Syringe" of the People's Republic of China No. CN203564613 is a kind of Self-destructive safety needle structure, the two types of pull-back safety needle structure and self-destructive safety needle structure are quite complicated in operation. If the force is applied improperly during operation, it is easy to cause a needle sticking event. In addition, the Republic of China No. M485055 The new "safety syringe" patent case is a safety needle structure using elastic elements or using the elastic principle. When the elastic element is used, the structure is too large, the operation is not easy, and it is easy to stain and cause pain to the patient. Non-good design, in addition, the new patent case of the Republic of China No. M475287 "Safe Vein Indwelling Needle" is a needle-shield safety needle structure. Due to its complicated structure, the needle-shield safety needle structure has a high production cost. Therefore, the general medical site considers the cost, and usually does not choose such a high-cost safety needle structure.
本案發明人鑑於上述安全針種類未能解決問題，無法兼具降低針扎及成本考量，因此乃亟思加以改良創新，並經苦心孤詣潛心研究後，終於成功研發完成本件安全針具。 In view of the above-mentioned safety needle type, the inventor of the present invention failed to solve the problem and could not reduce the needle sticking and cost considerations. Therefore, it was improved and innovated by the thought, and after painstaking research, the safety needle was finally successfully developed.
本發明之主要目的係在於提供一種可有效減少針扎事件發生機率，以維護醫護人員的工作安全與健康之安全針具。 The main object of the present invention is to provide a safety needle which can effectively reduce the incidence of needle sticking events and maintain the safety and health of medical staff.
本發明之次要目的係在於提供一種結構簡單且操作方便的安全針具。 A secondary object of the present invention is to provide a safety needle having a simple structure and convenient operation.
為達本發明之目的，本發明安全針具之一結構中主要包括一注射針、一針筒及一套管，該針筒前端具有一可供注射針***之針座，該針筒外緣具有至少一導軌，該導軌之一側或兩側設有複數鋸齒，該等鋸齒之側邊均分別具有一導入面及一滯留面，且該等鋸齒之滯留面係位於較遠離於該導軌前端之方向，該套管係套於該針筒之外緣，該套管之內管壁具有一卡榫，該卡榫係容置於該導軌內，且該卡榫具有與該等鋸齒作用之至少一榫導入面及至少一榫滯留面。 For the purpose of the present invention, one of the structures of the safety needle of the present invention mainly comprises an injection needle, a syringe and a sleeve, and the front end of the syringe has a needle holder for inserting the injection needle, and the outer edge of the syringe Having at least one guide rail, one side or both sides of the guide rail are provided with a plurality of serrations, the side edges of the serrations respectively have an introduction surface and a retention surface, and the retention surfaces of the serrations are located farther from the front end of the guide rail In the direction of the sleeve, the sleeve is sleeved on the outer edge of the barrel, and the inner wall of the sleeve has a latch, the cassette is received in the guide rail, and the cassette has a function of the serration At least one introduction surface and at least one retention surface.
本發明安全針具之一結構主要係當醫護人員於藥劑注射或血液採集動作完成後，將套管向針筒前端之方向推動，此時透過醫護人員之推力，使得套管之內管壁上的卡榫透過榫導入面與導軌之鋸齒的導入面作用，而令卡榫於導軌內帶動套管於該針筒外緣向針筒前端移動，以包覆注射針，並於卡榫移動至該導軌之最前端時，令注射針完全置於套管內。 One of the structures of the safety needle of the present invention is mainly when the medical staff pushes the sleeve toward the front end of the syringe after the injection of the medicament or the blood collection operation is completed, and then the thrust of the medical staff passes through the inner wall of the sleeve. The cassette is moved by the introduction surface of the crucible and the introduction surface of the serration of the guide rail, so that the cassette is moved in the guide rail to move the sleeve to the outer edge of the syringe to cover the injection needle, and the cassette is moved to the cassette. At the forefront of the guide rail, the needle is placed completely inside the sleeve.
1‧‧‧針筒 1‧‧‧Syringe
11‧‧‧針座 11‧‧‧ needle seat
12‧‧‧導軌 12‧‧‧ rails
121‧‧‧鋸齒 121‧‧‧Sawtooth
1212‧‧‧導入面 1212‧‧‧Import
1213‧‧‧滯留面 1213‧‧‧ stranded surface
122‧‧‧第一段導軌 122‧‧‧First section rail
123‧‧‧第二段導軌 123‧‧‧Second section rail
124‧‧‧第三段導軌 124‧‧‧third section rail
125‧‧‧容置區 125‧‧‧Receiving area
2‧‧‧套管 2‧‧‧ casing
21‧‧‧卡榫 21‧‧‧Carmen
211‧‧‧榫導入面 211‧‧‧榫 import side
212‧‧‧榫滯留面 212‧‧‧榫榫留面
22‧‧‧弧形孔 22‧‧‧Arc hole
23‧‧‧加強肋 23‧‧‧Strengthened ribs
3‧‧‧預留槽 3‧‧‧ reserved slot
31‧‧‧彈性壁 31‧‧‧Flexible wall
4‧‧‧注射針 4‧‧‧Injection needle
第1圖 為第一實施例之立體外觀圖；第2圖 為第一實施例之立體分解圖；第3圖 為第一實施例之卡榫示意圖；第4A~4C圖 為第一實施例之卡榫及導軌的相對位置示意圖一；第5A~5C圖 為第一實施例之卡榫及導軌的相對位置示意圖二；第6圖 為第二實施例之立體分解圖；第7圖 為第二實施例之卡榫示意圖； 第8圖 為第三實施例之立體分解圖；第9A~9E圖 為第三實施例之卡榫及導軌的相對位置示意圖；第10圖 為第四實施例之立體分解圖；第11圖 為第五實施例之立體分解圖；第12圖 為第五實施例之之卡榫及導軌的相對位置示意圖；第13圖 為第五實施例之套管部分剖視圖；以及第14圖 為第六實施例之立體分解圖。 1 is a perspective view of the first embodiment; FIG. 2 is an exploded perspective view of the first embodiment; FIG. 3 is a schematic view of the first embodiment; and FIGS. 4A-4C are the first embodiment. FIG. 5A to FIG. 5C are diagrams showing the relative positions of the cassettes and the guide rails of the first embodiment; FIG. 6 is an exploded perspective view of the second embodiment; FIG. Schematic diagram of the embodiment of the card; 8 is an exploded perspective view of the third embodiment; FIGS. 9A-9E are schematic views showing relative positions of the cassette and the guide rail of the third embodiment; FIG. 10 is an exploded perspective view of the fourth embodiment; Fig. 12 is a perspective view showing the relative positions of the cassette and the guide rail of the fifth embodiment; Fig. 13 is a partial sectional view of the sleeve of the fifth embodiment; and Fig. 14 is a sixth embodiment An exploded view of the example.
請參閱第1~5C圖，為本發明安全針具之第一實施例，本實施例中，主要包括一針筒1及一套管2，該針筒1前端之針座11外緣套設有一注射針4，該針筒1之外緣具有一導軌12，該導軌12係自該針筒1前端向針筒1後端延伸一第一段導軌122，並於接近針筒1後端處向針筒1側緣以第二段導軌123延伸一固定距離後，再由針筒1後端向針筒1前端延伸一第三段導軌124至接近針筒1前端之位置，該套管2係套設於該針筒1之外緣，該套管2末端或接近末端之內管壁表面具有一卡榫21，且該卡榫21係容置於該導軌12內，另外，該第一段導軌122及該第三段導軌124接近針筒1前端一側或兩側均具有複數鋸齒121，或該第一段導軌122及該第三段導軌124接近針筒1一側或兩側平均佈設有複數鋸齒121，該等鋸齒121之側邊均分別具有一導入面1212及一滯留面1213，該卡榫21具有與該等鋸齒121作用之至少一榫導入面211及至少一榫滯留面212，其中該滯留面1213與該第一段導軌122及該第三段導軌124之夾角為垂直或小於90度，且該第一段導軌122上之鋸齒121的滯留面1213係位於較遠離於該針筒1前端之 方向，該第三段導軌124上之鋸齒121的滯留面1213係位於較接近於該針筒1前端之方向，另外，本實施例中該針筒1於導軌12所設鋸齒121之位置的一側或兩側亦可設有至少一預留槽3，令該預留槽3與該導軌12間形成一具有彈性之彈性壁31。 1 to 5C, which is a first embodiment of a safety needle according to the present invention. In this embodiment, a syringe 1 and a sleeve 2 are mainly included, and the outer edge of the needle seat 11 at the front end of the syringe 1 is sleeved. There is an injection needle 4, and the outer edge of the syringe 1 has a guide rail 12 extending from the front end of the syringe 1 toward the rear end of the syringe 1 with a first segment of the guide rail 122 and near the rear end of the syringe 1. After the second side rail 123 extends to a fixed distance of the side edge of the cylinder 1 , a third section of the rail 124 extends from the rear end of the barrel 1 toward the front end of the barrel 1 to a position close to the front end of the barrel 1 . The sleeve is sleeved on the outer edge of the barrel 1. The end of the sleeve 2 has a latch 21 on the inner wall surface of the sleeve 2, and the cassette 21 is received in the guide rail 12. In addition, the first The segment guide rail 122 and the third segment guide rail 124 have a plurality of serrations 121 on the side or both sides of the front end of the syringe 1, or the first segment guide rail 122 and the third segment guide rail 124 are close to the side or both sides of the syringe 1 The cloth is provided with a plurality of serrations 121, and each of the sides of the serrations 121 has an introduction surface 1212 and a retention surface 1213, and the cassette 21 has at least one pair of the serrations 121. The introduction surface 211 and the at least one stagnation surface 212, wherein the stagnation surface 1213 is perpendicular to the angle between the first segment rail 122 and the third segment rail 124, and the sawtooth 121 on the first segment rail 122 The retention surface 1213 is located farther from the front end of the syringe 1 In the direction, the retaining surface 1213 of the serration 121 on the third segment guide 124 is located closer to the front end of the syringe 1. In addition, in the embodiment, the syringe 1 is located at the position of the serration 121 of the guide rail 12. At least one reserved groove 3 may be disposed on the side or both sides to form an elastic elastic wall 31 between the reserved groove 3 and the guide rail 12.
本發明安全針具第一實施例使用時，醫護人員係將該套管2由針筒1端穿入包覆於針筒1之外緣，並使卡榫21位於該第一段導軌122之前端，然後將套管2向針筒1後端拉，使卡榫21透過榫導入面211與鋸齒121的導入面1212作用，而帶動套管2向針筒1後端移動，以令注射針4由套管2前端露出，供醫護人員進行注射或取液之動作，並於注射或取液完成後，醫護人員藉由轉動套管2或針筒1，使卡榫21經過第二段導軌123進入第三段導軌124，接著再將套管2向針筒1之前端推動，使卡榫21由第三段導軌124接近針筒1之末端帶動套管2向針筒1前端移動，而使套管2重新將注射針4包覆住，並同時藉由第三段導軌124之鋸齒的121的滯留面1213與卡榫21之準滯留面212相抵頂，而令套管2無法再向第二段導軌123之方向推動，以避免注射針4外漏，另外，當卡榫21通過導軌12上所設之鋸齒121，而使榫導入面211與鋸齒121的導入面1212作用時，卡榫21與鋸齒121會受到彼此推擠的力量，而將卡榫21與鋸齒121向相反的方向推移，此時，卡榫21或鋸齒121兩者或其中之一透過擠壓彈性壁31，使彈性壁31向預留槽3方向產生形變，而令卡榫21可順利通過鋸齒121。 When the first embodiment of the safety needle of the present invention is used, the medical staff inserts the sleeve 2 from the end of the syringe 1 into the outer edge of the barrel 1 and places the cassette 21 on the first section rail 122. The front end, then the sleeve 2 is pulled toward the rear end of the syringe 1, and the cassette 21 is moved through the weir introduction surface 211 and the introduction surface 1212 of the serration 121, and the sleeve 2 is moved toward the rear end of the syringe 1 to make the needle 4 is exposed from the front end of the sleeve 2 for the medical personnel to perform an injection or liquid take-up action, and after the injection or liquid withdrawal is completed, the medical staff can rotate the sleeve 2 or the syringe 1 to pass the cassette 21 through the second guide rail. 123 enters the third segment guide 124, and then pushes the sleeve 2 toward the front end of the barrel 1, so that the cassette 21 is moved by the third segment guide 124 near the end of the barrel 1 to move the sleeve 2 toward the front end of the barrel 1. The sleeve 2 is re-covered by the injection needle 4, and at the same time, the retaining surface 1213 of the serration 121 of the third-section guide rail 124 abuts against the quasi-retaining surface 212 of the cassette 21, so that the sleeve 2 can no longer be moved. The second guide rail 123 is pushed in the direction to avoid leakage of the injection needle 4. In addition, when the cassette 21 passes through the serration 121 provided on the guide rail 12, the guide is made When the surface 211 acts on the introduction surface 1212 of the serration 121, the cassette 21 and the serration 121 are pressed against each other, and the cassette 21 and the serration 121 are moved in opposite directions. At this time, the cassette 21 or the serration 121 is two. One or the other of the elastic walls 31 is deformed in the direction of the reserved groove 3 by pressing the elastic wall 31, so that the cassette 21 can smoothly pass through the serrations 121.
由於本發明安全針具第一實施例操作時，醫護人員僅需於注射或取液完成後，先行轉動套管2或針筒1，再將套管2向針筒1前端之方向推即可，且當卡榫21推退至第三段導軌124之末端(接近針筒1前端之位置)即停止，因此，其操作上相當容易，可避免習用回拉式安全針結構因醫護人員的施力不 當而造成的針扎事件，再者本發明之安全針具結構簡單，因此可有效降低生產成本。 Since the first embodiment of the safety needle of the present invention is operated, the medical staff only needs to rotate the sleeve 2 or the syringe 1 after the injection or the liquid is taken, and then push the sleeve 2 toward the front end of the syringe 1. And when the cassette 21 is pushed back to the end of the third-section guide rail 124 (close to the front end of the syringe 1), it stops, so that it is quite easy to operate, and the conventional pull-back safety needle structure can be avoided because of the medical staff's application. Force In the case of the needle sticking event, the safety needle of the present invention has a simple structure, so that the production cost can be effectively reduced.
請參閱第6~7圖，為本發明安全針具第二實施例之立體分解圖，本實施例中，該第三段導軌124前端接近針筒1前端之側緣延伸有一容置區125，該容置區125與該第三段導軌124連接處設有至少一鋸齒121，該鋸齒121之滯留面1213係位於較遠離於該第三段導軌124之方向，當本發明安全針具第二實施例使用前，醫護人員係將該套管2由針筒1端穿入包覆於針筒1之外緣，並使卡榫21位於該第一段導軌122之前端，然後將套管2向針筒1後端拉，使卡榫21透過榫導入面211與鋸齒121的導入面1212作用，而帶動套管2向針筒1後端移動，以令注射針4由套管2前端露出，供醫護人員進行注射或取液之動作，並於注射或取液完成後，再透過轉動套管2或針筒1，使卡榫21經過第二段導軌123進入第三段導軌124，並將套管2向針筒1之前端推動，當卡榫21移動至第三段導軌124末端時，醫護人員再一次透過轉動套管2或針筒1，使卡榫21之榫導入面211與該容置區125及該第三段導軌124連接處之鋸齒121的導入面1212作用，而令卡榫21進入該容置區125中，此時藉由該容置區125與該第三段導軌124連接處之121的滯留面1213與卡榫21之榫滯留面212相抵頂，即可使卡榫21無法由該容置區125退至第三段導軌124，而令套管2無法再向針筒1之後端推退，以避免注射針4之尖銳端外露，而達到防止針扎狀況發生之目的。 FIG. 6 is a perspective exploded view of the second embodiment of the safety needle according to the present invention. In the embodiment, the front end of the third rail 124 is adjacent to the side edge of the front end of the syringe 1 and has a receiving area 125. The accommodating area 125 is connected with the third section rail 124 at least one saw tooth 121, and the stagnation surface 1213 of the swarf 121 is located farther away from the third section rail 124, when the safety needle of the present invention is second Before the embodiment is used, the medical staff penetrates the sleeve 2 from the end of the syringe 1 to cover the outer edge of the syringe 1, and the cassette 21 is located at the front end of the first section rail 122, and then the sleeve 2 is Pulling toward the rear end of the syringe 1 causes the cassette 21 to pass through the weir introduction surface 211 and the introduction surface 1212 of the serration 121, and the sleeve 2 is moved toward the rear end of the barrel 1 to expose the injection needle 4 from the front end of the sleeve 2. For the medical personnel to perform the action of injecting or taking the liquid, and after the injection or the liquid is completed, the carousel 21 is passed through the second segment guide 123 into the third segment guide 124 through the rotating sleeve 2 or the syringe 1. Pushing the sleeve 2 toward the front end of the barrel 1, and when the cassette 21 is moved to the end of the third section rail 124, the medical staff again sees through Rotating the sleeve 2 or the syringe 1 so that the weir introduction surface 211 of the cassette 21 acts on the introduction surface 1212 of the serration 121 at the junction of the accommodating area 125 and the third section rail 124, so that the cassette 21 enters the capacity In the setting area 125, at this time, the retention surface 1213 of the connection portion 121 of the accommodating area 125 and the third-section guide rail 124 abuts against the stagnation surface 212 of the cassette 21, so that the cassette 21 cannot be used. The accommodating area 125 is retracted to the third-section guide rail 124, so that the sleeve 2 can no longer be pushed back toward the rear end of the syringe 1 to prevent the sharp end of the injection needle 4 from being exposed, thereby preventing the occurrence of the needle-pinning condition.
請參閱第8~10圖，上述本發明之安全針具的第一實施例及第二實施例中，該套管上之卡榫及該針筒之導軌為可互相置換，例如本發明之第三實施例為第一實施例中，套管上之卡榫及該針筒之導軌互相置換後之結構，第四實施例則為第二實施例中，套管之卡榫及該針筒之導軌互相置換後之結構。 Referring to FIGS. 8-10, in the first embodiment and the second embodiment of the safety needle of the present invention, the cassette on the sleeve and the guide rail of the barrel are mutually replaceable, for example, the present invention. The third embodiment is the structure in which the cassette on the sleeve and the guide rail of the barrel are mutually replaced, and the fourth embodiment is the cassette of the sleeve and the barrel of the second embodiment. The structure after the rails are replaced with each other.
其中，第三實施例中，該卡榫21係設於針筒1之前緣，而該導軌12係由套管2後方向前延伸一第一段導軌122，並於接近套管2前端處向套管2側緣以第二段導軌123延伸一固定距離後，再由套管2前端向套管2後端延伸一第三段導軌124至接近套管2後端之位置，因此第三實施例使用時，醫護人員係將使卡榫21對應第一段導軌122之後端，然後將套管2自針筒1前端套入向針筒1外緣，使卡榫21透過榫導入面211與鋸齒121的導入面1212作用，而帶動套管2向針筒1後端移動，以令注射針4由套管2前端露出，供醫護人員進行注射或取液之動作，並於注射或取液完成後，醫護人員藉由轉動套管2或針筒1，使卡榫21經過第二段導軌123進入第三段導軌124，接著再將套管2向針筒1之前端推動，使卡榫21由第三段導軌124接近針筒1之末端帶動套管2向針筒1前端移動，而使套管2重新將注射針4包覆住，並同時藉由第三段導軌124之鋸齒的121的滯留面1213與卡榫21之準滯留面212相抵頂，而令套管2無法再向針筒1後端推動，以達到避免注射針4外漏之目的，另外，當卡榫21通過導軌12上所設之鋸齒121，而使榫導入面211與鋸齒121的導入面1212作用時，卡榫21與鋸齒121會受到彼此推擠的力量，而將卡榫21與鋸齒121向相反的方向推移，此時，卡榫21或鋸齒121兩者或其中之一透過擠壓彈性壁31，使彈性壁31向預留槽3方向產生形變，而令卡榫21可順利通過鋸齒121。 In the third embodiment, the latch 21 is disposed at the front edge of the barrel 1, and the guide rail 12 is extended from the rear of the sleeve 2 to a first section of the guide rail 122, and is adjacent to the front end of the sleeve 2. After the side edge of the sleeve 2 extends a fixed distance from the second section rail 123, a third section of the rail 124 extends from the front end of the sleeve 2 to the rear end of the sleeve 2 to a position close to the rear end of the sleeve 2, so the third implementation In the case of use, the medical staff will make the cassette 21 correspond to the rear end of the first section of the guide rail 122, and then insert the sleeve 2 from the front end of the barrel 1 into the outer edge of the barrel 1, so that the cassette 21 passes through the crucible introduction surface 211 and The introduction surface 1212 of the serration 121 acts to drive the sleeve 2 to move toward the rear end of the syringe 1 to expose the injection needle 4 from the front end of the sleeve 2 for the medical personnel to perform an injection or liquid take-up action, and to inject or take a liquid. After completion, the medical staff rotates the sleeve 2 or the syringe 1 to cause the cassette 21 to enter the third section of the guide rail 124 through the second section of the guide rail 123, and then pushes the sleeve 2 toward the front end of the syringe 1 to make the cassette 21, the third segment guide 124 approaches the end of the syringe 1 to drive the sleeve 2 to move toward the front end of the syringe 1, and the sleeve 2 is re-covered by the injection needle 4. At the same time, the retaining surface 1213 of the sawtooth 121 of the third-stage guide rail 124 abuts against the quasi-retaining surface 212 of the cassette 21, so that the sleeve 2 can no longer be pushed toward the rear end of the syringe 1 to avoid the injection needle 4. For the purpose of external leakage, in addition, when the cassette 21 is passed through the serration 121 provided on the guide rail 12 to cause the crucible introduction surface 211 to act on the introduction surface 1212 of the serration 121, the cassette 21 and the serration 121 are pressed against each other. And the cassette 21 and the serration 121 are moved in opposite directions. At this time, either or both of the cassette 21 or the serration 121 pass through the pressing elastic wall 31, so that the elastic wall 31 is deformed toward the reserved groove 3. The cassette 21 can be smoothly passed through the serrations 121.
該第四實施例使用前，醫護人員係將該套管2由針筒1端穿入包覆於針筒1之外緣，並使卡榫21位於該第一段導軌122之後端，然後將套管2向針筒1後端推，使卡榫21透過榫導入面211與鋸齒121的導入面1212作用，而帶動套管2向針筒1後端移動，以令注射針4由套管2前端露出，並於注射或取液完成後，再透過轉動套管2或針筒1，使卡榫21經過第二段導軌123進入第三段導 軌124，並將套管2向針筒1之前端推動，當卡榫21移動至第三段導軌124末端時，醫護人員再一次透過轉動套管2或針筒1，使卡榫21之榫導入面211與該容置區125及該第三段導軌124連接處之鋸齒121的導入面1212作用，而令卡榫21進入該容置區125中。 Before the fourth embodiment is used, the medical staff penetrates the sleeve 2 from the end of the syringe 1 to cover the outer edge of the barrel 1, and the cassette 21 is located at the rear end of the first section rail 122, and then The sleeve 2 is pushed toward the rear end of the barrel 1, and the cassette 21 is moved through the crucible introduction surface 211 and the introduction surface 1212 of the serration 121, and the sleeve 2 is moved toward the rear end of the barrel 1 to make the injection needle 4 be sleeved. 2 The front end is exposed, and after the injection or liquid extraction is completed, the rotating sleeve 2 or the syringe 1 is rotated, so that the cassette 21 passes through the second section guide 123 to enter the third section. The rail 124 pushes the sleeve 2 toward the front end of the barrel 1. When the cassette 21 moves to the end of the third section rail 124, the medical staff again passes the sleeve 2 or the barrel 1 to make the cassette 21 The introduction surface 211 acts on the introduction surface 1212 of the sawtooth 121 at the junction of the accommodating area 125 and the third section rail 124, so that the cassette 21 enters the accommodating area 125.
另外，請參閱第11~13圖，為本發明之第五實施例，本實施例中，該針筒1上導軌21之鋸齒121亦可設於導軌第一段導軌122及該第三段導軌124接近針筒1前端之底面，而該卡榫21則為設於套管2末端或接近末端之內管壁表面，並與鋸齒121相互作用，以作為導引套管2位移及使套管2無法再向針筒1之後端推退，且該套管2於卡榫21之兩側分別開設一預留槽3，使該卡榫21與針筒之鋸齒121作用時，透過該等預留槽31之設置，使卡榫21可向上拱起並產生形變，而令卡榫21可順利通過鋸齒121，又，本實施例亦可如第三實施例及第四實施例，將套管2上之卡榫21及該針筒1之導軌12互相置換。 In addition, referring to FIG. 11 to FIG. 13 , a fifth embodiment of the present invention, in the embodiment, the saw teeth 121 of the upper rail 21 of the syringe 1 can also be disposed on the first guide rail 122 of the guide rail and the third guide rail. 124 is adjacent to the bottom surface of the front end of the barrel 1, and the cassette 21 is disposed on the inner wall surface of the sleeve 2 near or near the end, and interacts with the serration 121 to serve as the guiding sleeve 2 to displace and make the sleeve 2 can no longer push back to the rear end of the syringe 1, and the sleeve 2 defines a reserved slot 3 on each side of the cassette 21 to allow the cassette 21 to interact with the serration 121 of the syringe. The arrangement of the retaining groove 31 allows the cassette 21 to be arched upward and deformed, so that the cassette 21 can smoothly pass through the serration 121. In addition, the embodiment can also be used as the third embodiment and the fourth embodiment. The upper cassette 21 and the guide rail 12 of the cylinder 1 are replaced with each other.
請參閱第14圖，為本發明安全針具之第六實施例，本實施例與第三實施例之結構相似，其差異在於該針座11係設於針筒1前端之側緣，因此該針套2之前端設有可供注射針4穿出之弧形孔22，透過該弧形孔22之設置，使該注射針4在轉動套管2或針筒1，使卡榫21經過第二段導軌123進入第三段導軌124時，該注射針4可沿著弧形孔22作位移，另外，當本發明安全針具之套管上設置導軌12時，容易導致套管2之強度不足，故本發明亦可於套管2之末端外緣環設一加強肋23，用以補足套管2強度。 Please refer to FIG. 14 , which is a sixth embodiment of the safety needle of the present invention. The embodiment is similar to the structure of the third embodiment, and the difference is that the needle holder 11 is disposed on the side edge of the front end of the syringe 1 , so The front end of the needle sleeve 2 is provided with an arcuate hole 22 through which the injection needle 4 can pass. Through the arrangement of the arcuate hole 22, the injection needle 4 is rotated in the sleeve 2 or the syringe 1, so that the cassette 21 passes through the When the two-section guide rail 123 enters the third-section guide rail 124, the injection needle 4 can be displaced along the curved hole 22. In addition, when the guide rail 12 is disposed on the sleeve of the safety needle of the present invention, the strength of the sleeve 2 is easily caused. Insufficient, the present invention can also provide a reinforcing rib 23 at the outer edge of the end of the sleeve 2 for complementing the strength of the sleeve 2.
由上述可知，本發明可透過將卡榫與導軌相互對應設置於針筒及套管上，並將卡榫設於導軌之底面或兩側，因此，於本發明技術特徵所涵蓋 之範圍內，進行相對位置的變換與前後方向的修改，均應包含於本案之專利範圍中。 It can be seen from the above that the present invention can be disposed on the cylinder and the sleeve by correspondingly connecting the cassette and the guide rail, and the cassette is disposed on the bottom surface or both sides of the guide rail, and thus is covered by the technical features of the present invention. Within the scope of the scope, the transformation of the relative position and the modification of the front-rear direction shall be included in the patent scope of the present case.
上列詳細說明乃針對本發明之可行實施例進行具體說明，因此，並非用以限制本發明之專利範圍，凡未脫離本發明技藝精神所為之等效實施或變更，均應包含於本案之專利範圍中，且本案不僅於技術思想上確屬創新，同時具備習用之傳統結構所不及之多項功效，已充分符合新穎性及進步性之法定專利要件，爰依法提出申請，懇請 貴局核准本件發明專利申請案，以勵發明，至感德便。 The detailed description of the present invention is intended to be illustrative of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention. In the scope, and the case is not only innovative in terms of technical thinking, but also has many functions that are incompatible with the traditional structure of the past, it has fully complied with the statutory patent requirements of novelty and progressiveness, and applied for it according to law, and urges you to approve the invention. Patent application, in order to invent, to the sense of virtue.
1‧‧‧針筒 1‧‧‧Syringe
11‧‧‧針座 11‧‧‧ needle seat
12‧‧‧導軌 12‧‧‧ rails
121‧‧‧鋸齒 121‧‧‧Sawtooth
1212‧‧‧導入面 1212‧‧‧Import
1213‧‧‧滯留面 1213‧‧‧ stranded surface
122‧‧‧第一段導軌 122‧‧‧First section rail
123‧‧‧第二段導軌 123‧‧‧Second section rail
124‧‧‧第三段導軌 124‧‧‧third section rail
2‧‧‧套管 2‧‧‧ casing
3‧‧‧預留槽 3‧‧‧ reserved slot
4‧‧‧注射針 4‧‧‧Injection needle
Claims (12)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105111761A TWI602591B (en) | 2016-04-15 | 2016-04-15 | Safety needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105111761A TWI602591B (en) | 2016-04-15 | 2016-04-15 | Safety needle |
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| Publication Number | Publication Date |
|---|---|
| TW201735962A TW201735962A (en) | 2017-10-16 |
| TWI602591B true TWI602591B (en) | 2017-10-21 |
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| TW105111761A TWI602591B (en) | 2016-04-15 | 2016-04-15 | Safety needle |
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| TW (1) | TWI602591B (en) |
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| CN112494756B (en) * | 2020-10-28 | 2022-06-24 | 重庆医科大学附属永川医院 | Anesthesia injection device |
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| TWM489646U (en) * | 2014-07-30 | 2014-11-11 | Bespring International Marketing Co Ltd | Safety sleeve structure of butterfly needle set |
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| US5346480A (en) * | 1992-12-14 | 1994-09-13 | Q-Med, Inc. | Syringe with retractable needle |
| US5830193A (en) * | 1993-12-28 | 1998-11-03 | Higashikawa; Tetsuro | Syringe |
| US6537257B1 (en) * | 1999-11-01 | 2003-03-25 | Abraham Wien | Syringe with reciprocating, leak-proof needle guard |
| CN202355651U (en) * | 2011-10-26 | 2012-08-01 | 杨月芬 | Safety type puncture injection needle |
| TWM489646U (en) * | 2014-07-30 | 2014-11-11 | Bespring International Marketing Co Ltd | Safety sleeve structure of butterfly needle set |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201735962A (en) | 2017-10-16 |
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