TW200936196A - Safety syringe device with separable needle stem by turning back - Google Patents

Abstract

A safety syringe device with separable needle stem by turning back is composed of a syringe tube, a push rod, a needle seat, a needle stem and a needle cap. The needle stem is attached to a bushing which being fitted to a core bit thereby fixing the needle seat at its position. The syringe tube and the needle seat that being screw combined are further tightly settled by dexterous positioning means. After finishing syringe, the needle sheet along with the needle stem is withdrawn and hidden in the syringe tube, the push rod can be broken at its brittle neck portion by tapping it against a breaking fringe formed around the syringe tube thereby leaving the needle seat and needle stem inside the syringe tube. By so the used needle stem will never emerge out accidentally to puncture people's skin. The used syringe tube, push rod, needle seat and stem can be thrown away altogether to avoid restoring for reuse.

Description

200936196 IX. Description of the Invention: [Technical Field] The present invention relates to a safety syringe capable of retrieving a used needle into a syringe, and having a better friction when the push rod is coupled with the hub With the effect of pressing, and its structure makes manufacturing easier. [Prior Art] With the advancement of technology and the advancement of medical technology, human beings have a deeper understanding of the importance of medical safety, and therefore the use of medical devices is more careful when used or after use. The treatment process is also very important, because improper medical equipment use behavior, especially intrusion into the human body, if the use is improper, the damage is not only the party, the damage and impact caused by it is not estimated. ! ❹ Effect improvement, improvement and persistence. At present, the secret note «Used (4) to prevent repeated use and needle accidental injury 1 The used injection device is destroyed so that it cannot be used again, in its destruction In the process, it is necessary to protect the safety protection structure of the operator' to avoid the possibility that the medical staff may be stabbed when the needle is removed and recovered after being placed in a safe place. Therefore, the inventor of the case has a number of related safety. Note «The patent, but still (4) the structure of the safety device is simplified, and the friction between the components is increased. The spirit of the invention is continued. The purpose of the present invention is to provide a retractable needle and complete the inside. It is hidden in the tube of injection ❹ ❹ 200936196, and after use, the needle cover is a syringe that can be inserted or recycled into the detachable needle in the syringe; the syringe of the detachable needle can be used after use. Small straight care (four) neck, so that the exposed push rod can be broken and separated. % The safety syringe of the present invention mainly provides a simple structure and is easy to manufacture, and the assembly of the sub-components is more closely related to the injection device; the system includes a - injection ... push #, - a needle seat, a needle cover and - The needle cover is composed of a needle cover; one of the nozzles has a drug storage space, and an inner spiral segment and a positioning thread are arranged inside the front end of the drug storage space, and a rear end is convexly provided with a broken edge; Inserted in the syringe, the top end is provided with a top block having a smaller circular diameter:::=:': The outer portion of the outer portion of the lower portion is provided with a plurality of convex portions, ... the front end of each of the opposite portions is The center is inclined to the sides and is provided below the alignment parts - a play edge, - between the alignment part and the retaining edge; how to use the front end of the system to reduce the diameter of the sleeve The center of the sleeve is π _ 卩 ' and its rear end is connected with sand - the two sides of the two are placed in the adjacent two... "There are a plurality of positioning blocks, 1 /1 in Waidanwei Then, there is a space for the restriction, and the space for the needle is the outer spiral segment and the one ring groove. The segment 'sends the needle holder to be tightly screwed with the syringe; according to the above structure, the needle holder passes through the inner spiral section of the syringe, and can be positioned on the sleeve portion of the 200936196 needle sleeve corresponding set. Thereafter, the needle holder is provided to communicate with the positioning thread of the syringe and is screwed and positioned, so that the medicine contained in the drug storage space of the syringe can be injected through the accommodating space, the passage and the needle. [Invention] Referring to Figures 1 to 8, a safety syringe according to the present invention includes a main/seat (1), a push rod (2), and a needle holder ( 3), a needle cover (4) and a needle (41); wherein the syringe (1) has the same structure as the syringe (1) in the first few applications of the present inventors, mainly a circle The cylindrical object forms a drug storage space (11) in the center thereof, and a portion of the outer diameter of the front end of the drug storage space (11) is sequentially provided with an outer diameter portion to form an inner spiral segment (12) and a positioning. The thread (13) is convexly protruded at the rear end of the drug storage space (U) A broken edge (14), at the end of the syringe (1), there is another one for the hand to push the force (15). ® Please refer to Figure 4 and Figure 5, the putter ( 2) is placed in the syringe (1), the top end of which is provided with a smaller circular diameter pushing portion (21) and a convex card portion (22), and the outer diameter of the convex portion (22) is It is slightly larger than the top end of the ejector portion (21), and is provided with a plurality of bump-shaped alignment portions (23) at intervals around the outer periphery of the ejector pin (21), and each of the 8 hai aligning portions (23) The front end is a guiding surface (24) which is inclined to the sides from the center, and a retaining edge (25) is disposed below the opposite portion (23), and the collar (^) is sleeved on the same Between the alignment portion (23) and the rim (25), and the collar (26) is pressed against the wall surface of the drug storage space (11) of the syringe (1); Below (25) there is a section of the neck that reduces the diameter of the neck. (27) 'Twist the pusher (2) after the injection is completed, and the part above the neck (27) can be left in the syringe (1) the role of the person; and a number of elongated shapes below the neck (27) The ribs (28) are provided at one end of the ribs (28) for pushing the piece (29) by one of the fingers, and the at least one side of the piece is marked with a pointing arrow. By. The ® °H needle holder (3) is provided with a sleeve portion (31) having a reduced diameter at the front end thereof, and the sleeve portion (31) is provided with a passage (32) at the center, and is provided in the passage (32) The blocking portion (38)' and the rear end thereof are provided with an accommodating space (33), and a plurality of positioning blocks (34) are disposed on the surface of the accommodating space (the sin), and the adjacent positioning blocks are (4) A limit space is formed between the sleeves, and the outer circumference of the housing (33) is provided with an outer spiral section (35) and a concave ring groove (10). The outer spiral section (35) corresponds to the d-ray shot. The inner section of the barrel (1) ((2) enables the needle holder (3) to be tightly screwed with the syringe (1) ® t; and the positioning sleeve of the concave ring groove (36) is provided with a collar (10). 4) The upper system is provided with a needle (4 ι) in a set or adhesive manner, and one end thereof is provided with a leading edge portion (42). When the needle seat (3) passes through the inner spiral portion (12) of the syringe (1), a needle can be used. The sleeve (4) is positioned on the sleeve portion (31), and thereafter the needle holder (3) and the needle (6) are connected to the positioning thread (13) of the syringe (1) and are screwed and positioned. The syringe (1) The liquid contained in the medicine space (11) can be injected into the body of the intended injecting person through the accommodating space (33), the channel (32) and the needle (6). The needle cover (43) is set to be a cone. The sleeve body can be covered by the needle sleeve (4) of the syringe (1) to avoid the risk of the needle (6) being directly exposed and stabbing the human body. According to the safety syringe described above, please refer to FIG. When using the inventive safety syringe, 'the needle holder (3) is first placed in the drug storage space ((1) of the syringe (1), and the push rod (2) is pushed in by the needle seat (3), and the alignment portion is made (2)) corresponding to the inner adjacent 4-bit block embedded in the needle seat (3) (the assembly is completed in the limit space between (4)' continue to push the push rod (2) and drive the needle seat (3) forward' when the needle seat (3) is worn The sleeve (31) is intended to be inserted through the note (4) (1) when the positioning thread (10) is used. The outer spiral section (35) of the needle seat (3) is screwed with the positioning thread (10) of the syringe (1) so that the needle seat (3) can be followed. Rotate forward so that the collar (37) on the needle seat (3) abuts against the inner spiral of the syringe (1) Inner wall of paragraph (10)

And the collar (10) on the pusher (2) is pressed against the inner wall surface of the syringe (1), and the storage space (1) is in a completely sealed state; then, the needle of the needle 盍 (43) is closed. When the sleeve (4) is set in the sleeve (3), the sleeve portion (3) can be screwed through the leading edge portion (10) of the needle sleeve (4) and the inner spiral portion ((2), so that the needle sleeve (4) can be rotated along the needle holder (3). When the user wants to take the liquid medicine, the action is the same as that of the user, and the user takes the needle cover (43) and inserts the needle (4) into the medicine. In the bottle (not shown), the direct pusher (2) can be pulled back to suck the liquid into the refill space (1). The reason 200936196 is that the needle seat (3) has borrowed the external thread segment and The structure of the positioning thread (13) can be stably set on the syringe (1); and when the injection is completed, the pusher (2) is continuously advanced and the pusher (2) is repeated. The convex card portion (22) is correspondingly fixed to the top end of the stopping portion (38) of the needle seat (3) through the sleeve portion (31), and then the rotating rod (2) is reversely rotated to interlock the needle holder ( 3) Follow the set After the direction of the spiral of the thread 〇3) is retracted, the external thread segment is disengaged from the positioning thread 〇3), and the needle seat (3) is completely separated from the inner spiral section (12) of the syringe (1), so that the needle seat (3) and the needle are (4)) together with the drug storage space (1) t of the syringe (1), the neck (27) of the pusher (2) is retracted to the fracture edge (14) of the drug storage space (11), and twisted left and right. The push rod (2) has its neck (27) broken, as shown in Fig. 10, and the needle (41) can be placed in the syringe (1), and the needle cover (43) is reversely inserted into the inner spiral section. ((2), then thrown into the syringe recovery device for recovery and destruction. Please refer to Figure 10 - and Figure 12, the safety syringe of the second embodiment of the present invention, which also includes a syringe (1), The push rod (2), the needle seat (3), the © needle (4), and the needle cover (43) are different from the first embodiment described above in that the syringe (1) has only the positioning thread (1), and there is no inner spiral section (10), and the other The characteristic structure of each member such as the push rod (2), the needle seat (3), the needle holder and the needle cover (43) is unchanged, and the present invention In the embodiment, the assembly position and the connection operation of the syringe (1), the push rod (2), the needle holder (8), the needle holder, and the needle cover (10) are the same as those in the first embodiment of the present invention. Said. Please refer to FIG. 13 for the safety injection of the third embodiment of the present invention. The second embodiment includes a syringe (1), a push rod (2), and a needle holder (magic, The needle (41) and the needle cover (43) are different from the foregoing embodiment. The syringe (1) has only the positioning thread (10) and has no inner spiral section (12); and the push rod (2) has no top. The pushing portion (21) has only the convex card portion (22); the needle seat (3) has a needle directly bonded to the end, and the needle portion (3) is not provided with the sleeve portion (3), and the channel (10), the surface of the needle holder (3) accommodating the space (33) Intervals are provided with a plurality of positioning blocks (34) and a blocking portion (3), a remaining assembly (1) and a push rod (2), a needle seat (3), a needle holder, and a needle cover (10) The connecting action is the same as the first embodiment of the present invention, and therefore will not be described herein. The syringe for rotating the separating needle provided by the present invention has the following advantages when compared with other conventional techniques: The convex portion (10) of the rod (2) corresponds to the top end of the stopper portion (10) which is fastened in the needle holder (3) through the sleeve portion (8), and can The injection of the liquid in the syringe (1) into the human body can greatly reduce the situation of the residual syringe of the liquid medicine (1). ❹ 帛2, the needle (4) after use is collected in the syringe (1) and is not ready to fall out, so There is no danger of stabbing the human body, and the use of the syringe (1), the pusher (2), the needle holder (3), and the needle (6) cannot be recycled and used to ensure the safety of the medical device. The third section of the needle holder (3) and the syringe (1) can be reduced in the shape of the square thread, and the pattern of the pattern is combined, not only the joint is tighter, but also the syringe (1) and the needle holder (3) It is easier to draft at the time of manufacture, and the failure rate is small.

Better. Figure 200936196 Manufacturing costs. The invention is further provided with a positioning block (10) disposed at a plurality of intervals in the needle seat (3) of the syringe (1), and a recessed space is formed in the middle of the adjacent vertical block (34) for the push rod (2) The alignment portion (10) is embedded to provide appropriate friction and resistance, so that the needle holder (3) is assembled on the syringe (1) to be positioned more tightly; the collar on the needle seat (3) and the push rod (2) (26) Make the storage space (1)) completely sealed, not afraid of the easy flow of the drug, and the effect is red when the injection is used. 'This case is not only innovative in terms of space type, but also can be improved compared with the conventional printing. The efficacy of the item should be fully in line with the novelty and progressiveness of the statutory patent requirements. ‘Friends’ ____ request to approve the invention patent application’ to encourage the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective exploded view of a preferred embodiment of the present invention. Figure 2 is a schematic cross-sectional view of the figure - Fig. 2 is a schematic view showing the action of the pusher sleeve being advanced from the rear end of the syringe. Figure 4 is a perspective view of the first embodiment of the push rod; Figure 5 is a perspective view of the first embodiment of the needle holder; Figure 6 is a plan view of the side push rod through the needle holder and the needle piercing through the needle barrel A schematic view of the cum section. 13 200936196 Figure 7 is the plane combination of the needle sleeve that is inserted through the needle pierce of the needle of Figure 6 to assemble the needle and cover the needle. The partial appearance of the eight-figure figure A schematic diagram of the cum action. Figure 9 is a perspective view showing the three-dimensional action of rotating the push rod in reverse to interlock the position of the needle holder and the outer spiral portion and the position of the note (4).

Figure 10 shows that the needle holder and the needle are left in the injection after the neck of the push rod is broken: 'There is a plane in which the needle cover is inserted backward into the needle punching hole of the syringe. The three-dimensional appearance is divided into ten parts, and the present invention is another preferred embodiment.

Figure 12 is a schematic cross-sectional view of the plane of the syringe. Figure 13 is a schematic cross-sectional view of the plane of the syringe 10, showing the second embodiment of the needle holder. The main component symbol description] 1 syringe 11 storage space 12 spiral section 13 positioning thread Μ broken edge clever push piece 14 200936196 push rod ejector part convex card part aligning part guide surface rim collar ❹ neck rib push Needle seat through sleeve channel accommodation space positioning block outer spiral section concave ring groove collar ring stop needle sleeve 41 needle 200936196 42 guide edge 43 needle cover

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Claims (1)

200936196 X. Patent Application®: 1 · A safety syringe, comprising: a syringe with sequential and inner spiral segments and “positioning (4); a push rod, a W-eye, a portion and a convex card portion, And the convex card and S have ~7 shells. The outer diameter of the cymbal is larger than the ejector, and the squat is slightly below the cymbal size. There are a plurality of aligning parts around the nai-I, *, and the splicing-ring is connected to the shackle. The lower part of the ring is connected to the neck; the page & 钿 small round path - the needle seat 'the front end is set to reduce the diameter of the circle to wear the wearing sleeve, in the inside of the sleeve part has a stop portion' And the rear end is connected to the arranging space, adjacent to the accommodating space-positioning (four) mesh, the surface is convexly provided with a plurality of positioning blocks, and the 工 position is formed between the 绰 绰 疋 , , The aligning portion of the push rod can be embedded, and the needle seat is disposed in the sputum sputum space, and an outer screwing portion is disposed around the inner seating space of the end of the drug storage space, and the syringe can be combined with the syringe The positioning thread is tightly screwed; a needle sleeve has a needle at one end and a leading edge at the other end, and the leading edge portion can be screwed with the inner spiral portion. The sleeve is attached to the wearing portion with a bevel. a safety syringe comprising: a syringe having a drug storage space with a positioning thread inside the front end of the storage space; a pusher threaded on the syringe $, a threshold 3 The top end is provided with a pusher 17 2. 200936196 and the convex card portion 'and the outer diameter of the convex portion is slightly larger than the top end of the pusher portion' (4) a plurality of alignment portions are arranged around the outer portion below the push portion. And then set a ring, connected to the neck of the ring; below it is provided with a section of reduced diameter Ο 3. 4. ❹ 5. 6. - Needle seat, the front end of which is set to reduce the diameter of the hole - wear sleeve a central passageway in the sleeve portion, wherein the passageway is provided with a stopper portion, and the end portion is connected to the rhyme work chamber, and a plurality of positioning blocks are protruded on the surface of the accommodation space. A positioning space is formed between the two positioning blocks, so that the alignment portion of the push rod can be embedded, and the needle seat is provided with an outer spiral portion around the housing space, and the positioning thread of the injection tube can be arranged. Tightly screwed together. The safety syringe of claim i or claim 2, wherein the aligning portion of the push rod is provided with a guiding surface whose front end is inclined to the center toward both sides. The safety syringe of claim 1, wherein the positioning block of the needle seat is correspondingly provided with a slope whose center side is inclined to the sides. The safety syringe of claim 2, further comprising: a needle sleeve, wherein the needle is threaded into the needle sleeve, and the needle sleeve is just passed to be correspondingly sleeved on the needle holder. Positioner on the sleeve. The safety syringe according to claim 1 or 2, wherein when the injection is completed and the injection is continued, the push rod is continuously advanced and the convex cut of the push rod is correspondingly fixed to the end of the needle sleeve. The top end of the portion is then rotated in the opposite direction to push the rod and the needle holder is retracted in the direction of the spiral of the positioning thread. 18 200936196 The outer threaded portion is disengaged from the inner spiral portion of the positioning threaded cylinder. At the same time, the needle holder is completely separated from the safety syringe, comprising: a syringe having a positioning thread; a drug storage space in the interior of the front end of the drug storage space, and a convex card portion at the top end of the plunger a plurality of alignment portions are arranged, and then a push rod is inserted through the injection cylinder and the outer circumference of the convex portion is sleeved with a collar; a needle holder is directly bonded to the end There is a phase, and the needle channel is connected to a receiving space 'in the accommodating' table (4), a positioning block and a stopping portion are formed between the adjacent two positioning blocks, and a space is formed for The aligning portion of the push rod can be embedded. The needle seat is provided with an outer spiral portion around the accommodating space, and can be tightly screwed with the positioning screw (9) of the syringe. ❹ 19