CN111544701A - Self-destruction pre-charging type tube-flushing injector - Google Patents
Self-destruction pre-charging type tube-flushing injector Download PDFInfo
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- CN111544701A CN111544701A CN202010534461.2A CN202010534461A CN111544701A CN 111544701 A CN111544701 A CN 111544701A CN 202010534461 A CN202010534461 A CN 202010534461A CN 111544701 A CN111544701 A CN 111544701A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
- A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/508—Means for preventing re-use by disrupting the piston seal, e.g. by puncturing
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The application discloses a self-destruction pre-filled type washing pipe injector, which comprises a sleeve, a piston and a pull rod; the sleeve at least comprises a sleeve body, a blocking fin, an internal threaded pipe, an external threaded cap and a butt-joint insertion pipe, wherein a sealing end cover which is tightly contacted with the butt-joint insertion pipe and is sealed is arranged at the front end of the external threaded cap; the piston is connected to the inner wall of the sleeve in a sealing manner; the pull rod is arranged at the lower end of the piston. The self-destruction pre-filled type washing tube injector has the advantages that the internal thread tube can be sealed through the external thread cap and the sealing end cover, and when the self-destruction pre-filled type washing tube injector is used, the external thread cap is screwed off, and then the butt joint insertion tube is connected with infusion equipment; the infusion device includes at least a PICC and an infusion port. The self-destruction pre-filled type washing pipe injector can avoid secondary use through failure of the piston or the pull rod, and further achieves a self-destruction effect.
Description
Technical Field
The application relates to the technical field of medical instruments, in particular to a self-destruction pre-filled type washing pipe injector.
Background
In clinical infusion, the infusion liquid in the prefilled syringe is required to maintain the tightness and integrity before the prefilled syringe is used so as to achieve the optimal drug effect, that is, the prefilled syringe is not only in an undamaged state, but also is firstly contacted with the infusion liquid when the patient uses the prefilled syringe. However, in the prior art, the prefilled syringe has poor sealing performance and is prone to leakage during a specific sterilization process (such as steam sterilization and other sterilization methods in various pharmaceutical industries) which is performed before shipment, thereby affecting the drug efficacy.
The syringe is the most common disposable medical apparatus, and the pre-filled syringe is higher than the common syringe in cost and needs a targeted self-destruction device, so that the re-use of the pre-filled syringe is avoided.
Disclosure of Invention
The application provides a self-destruction pre-filled type washing pipe injector, including:
the sleeve, the sleeve includes the sleeve body at least, establishes the fender wing at sleeve body outer wall lower extreme, establishes the external screw thread cap on the internal thread pipe at sleeve body front end, spiro union, sleeve body front end center still communicates and is equipped with the butt joint intubate, external screw thread cap front end be equipped with butt joint intubate in close contact with and then sealed end cover:
the piston is connected to the inner wall of the sleeve in a sealing mode;
and the pull rod is arranged at the lower end of the piston.
Furthermore, the pull rod comprises pull rod side fins which are uniformly distributed in the circumferential direction and a circular push plate which is fixed at the lower end of each pull rod side fin, a threaded base is arranged at the front end of each pull rod side fin, a connecting screw rod is arranged at the front end of each threaded base, and the rear end of the piston is in threaded connection with a threaded hole of the connecting screw rod.
Furthermore, the middle part of the side wing of the pull rod is provided with an easy-to-break tooth hole along the radial direction.
Furthermore, the outer side surface of the side fin of the pull rod is upwards and outwards bent to be provided with a side fin clamping tongue, and an annular clamping groove for clamping the side fin clamping tongue is formed in the inner wall of the sleeve body.
As another improvement scheme:
the front end of the piston is formed with a piston plug, and the piston plug comprises an anti-drop sharp hook with a narrow front part and a wide back part and a small-diameter connecting rod arranged at the back end of the anti-drop sharp hook and connected with the piston; the butt joint intubate inner wall still shaping has the anticreep taper groove that is used for the card to hold anticreep point colludes.
Furthermore, the piston comprises a hard base, a breaking and dismantling device and a soft skin;
the hard base comprises a hollow cylindrical outer base barrel with an opening at the rear end, a rotation stopping taper hole which is narrow in front and wide in rear is formed at the rear end of the outer base barrel, a clamping ring groove is further formed at the rear half part of the inner wall of the outer base barrel, radial slots which are arranged along the radial direction are uniformly distributed on the front end surface of the outer base barrel in the circumferential direction, a sliding insertion rod is arranged forwards in the center of the front end surface of the outer base barrel, and a limiting stopper is formed at the front end of the sliding insertion rod;
the breaking-in device comprises a perforated sleeve disc which is sleeved on the sliding insertion rod in a sliding way, round-head insertion rods which are uniformly distributed on the front end face of the perforated sleeve disc in the circumferential direction, radial sliding blocks which correspond to the radial insertion grooves in a one-to-one manner and are matched with the radial insertion grooves in an inserting way, a breaking-in rod body arranged at the front end of the radial sliding blocks, an inclined end face arranged at the proximal end of the breaking-in rod body, and a pointed cutter head arranged at the distal end of the breaking-in rod body, wherein the inclined end face is inclined towards the sliding insertion rod from front to back gradually, and the inclined end face is abutted against the outer edge of the;
the soft skin is fixedly wrapped outside the hard base and the breaking-in device, and the periphery of the soft skin is in sealing fit with the inner wall of the sleeve;
the pull rod comprises an outer barrel component, an inner rod component and a side fin component;
the outer cylinder assembly comprises an outer threaded pipe, a rotation stopping conical ring arranged at the front end of the outer threaded pipe and matched with a rotation stopping conical hole in a locking manner, a fixed rotating shaft uniformly distributed on the front end face of the rotation stopping conical ring in the circumferential direction, a hinged swing arm rotatably arranged on the fixed rotating shaft, a waist-shaped through hole arranged at the proximal end of the hinged swing arm in the length direction, and a front locking ring arranged at the rear end of the outer threaded pipe, wherein locking threads arranged along the radial direction are uniformly distributed on the rear end face of the front locking ring in the circumferential direction;
the inner rod assembly comprises a built-in core rod which is rotatably inserted into the external thread pipe, an axial side hole which is formed at the front end of the outer wall of the built-in core rod along the axial direction, a spring baffle disc which is formed on the front end face of the built-in core rod, a sliding sleeve ring which is sleeved on the built-in core rod in a sliding way, a side plug which is arranged on the inner wall of the sliding sleeve ring and is inserted into the axial side hole in a sliding way, swing plugs which are circumferentially and uniformly distributed on the rear end face of the sliding sleeve ring and are in one-to-one correspondence with the waist-shaped through holes and are in insertion fit with the waist-shaped through holes, a compression spring which is sleeved on the built-in core rod and is positioned between the spring baffle disc and the sliding sleeve ring, and;
the side fin assembly comprises a side fin sleeve sleeved outside the external thread pipe, a side fin body distributed on the side sleeve in a cross shape, sleeve side holes uniformly distributed on the side fin sleeve in the circumferential direction and corresponding to the side fin body, a communicated outer hole formed in the side fin body and communicated with the sleeve side holes, an internal thread cambered surface arranged in the sleeve side hole in an axially slidable manner, and a sliding side piece arranged on the outer wall of the internal thread cambered surface and penetrating through the communicated outer hole; the internal thread cambered surface is in threaded connection with the external thread pipe.
Furthermore, a piston plug is formed at the front end of the piston, and the piston plug comprises an anti-falling sharp hook with a narrow front part and a wide back part and a small-diameter connecting rod which is arranged at the back end of the anti-falling sharp hook and is connected with the middle part of the front end of the piston; the butt joint intubate inner wall still shaping has the anticreep taper groove that is used for the card to hold anticreep point colludes.
Furthermore, the outer side face of the sliding side piece is provided with a side fin clamping tongue which is bent upwards and outwards, and a circle of annular clamping groove used for clamping the side fin clamping tongue is formed in the inner wall of the sleeve body.
Furthermore, the sliding inserted bar is a bar body with a non-circular section, the middle part of the sleeve disc with the hole is provided with a jack with a non-circular section matched with the sliding inserted bar, and preferably, the section of the sliding inserted bar is triangular or rectangular.
Has the advantages that:
the self-destruction pre-filled type washing tube injector has the advantages that the internal thread tube can be sealed through the external thread cap and the sealing end cover, and when the self-destruction pre-filled type washing tube injector is used, the external thread cap is screwed off, and then the butt joint insertion tube is connected with infusion equipment; the infusion device includes at least a PICC and an infusion port.
The present case a self-destruction type pre-filled washing pipe syringe can avoid the secondary to use through the locking of piston inefficacy, and then reach the self-destruction effect:
screwing the external thread cap and the sealing end cover off from the internal thread pipe, and connecting the butt joint insertion pipe with infusion equipment; the pull rod is pushed to drive the piston to move forwards, and the injection liquid carried in the injector is pushed into the body of a patient through the infusion equipment; when the piston moves to the front end of the inner wall of the sleeve, the anti-falling sharp hook is inserted into the anti-falling conical groove, so that the piston cannot fall off backwards, and the primary locking fails;
continuing to push the pull rod forwards to enable the front end of the piston to be extruded with the front end of the inner wall of the sleeve, and inserting the breaking-in device into the inner wall of the sleeve: the round-head inserted bar and the sleeve plate with the hole are extruded by the inner wall of the sleeve and move backwards along the sliding inserted bar; the perforated sleeve disc drives the inclined end face, the breaking-in rod body and the pointed tool bit to move outwards along the radial slot, the pointed tool bit penetrates through the soft skin and then penetrates into the inner wall of the sleeve, the piston is further locked to fail, and meanwhile the air tightness of the inner wall of the sleeve and the air tightness of the piston are damaged;
the present case a self-destruction type pre-filled washing pipe syringe can break away from the piston through the pull rod, avoids the secondary to use, and then reaches the self-destruction effect:
pinching the outer cylinder assembly, and then pulling the rear locking disc, the built-in core rod and the spring baffle disc backwards to overcome the compression spring to move backwards, so that the rear locking disc is separated from the front locking ring and is unlocked; rotate back locking dish, built-in core bar, axial side opening rotate, axial side opening drives side plug, slip lantern ring, swing plug and rotates, the swing plug acts on waist shape through-hole and the rotation of drive articulated swing arm, articulated swing arm rotates until the orbit circle at its outer end place is less than can follow when blocking the annular internal diameter and stopping the annular and deviate from in the annular, then pull rod follow piston in pull rod.
The present case a self-destruction type pre-filled washing pipe syringe can be invalid through the locking of pull rod, avoids the secondary use, and then reaches the self-destruction effect:
the pull rod is pulled out from the sleeve backwards:
the side fin clamping tongue is clamped in the annular clamping groove and cannot be pushed forwards.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a front view of one embodiment of the syringe.
FIG. 2 is a cross-sectional view of one embodiment of the syringe.
Figure 3 is a cross-sectional view of another embodiment of the syringe.
Figure 4 is a cross-sectional view of another embodiment of the syringe.
Figure 5 is a cross-sectional view of another embodiment of the syringe.
Fig. 6 is a sectional view taken along line a-a of fig. 5.
FIG. 7 is a schematic view of an embodiment of the connection between the piston and the pull rod of the syringe.
Fig. 8 is a schematic view of another embodiment of the connection of the piston and the pull rod of the syringe.
FIG. 9 is a schematic view of another embodiment of the connection of the piston and the pull rod of the syringe.
Fig. 10 is a schematic view showing a state of breaking open the plunger of the syringe.
In the figure:
a. a side wing clamping tongue and a ring-shaped clamping groove;
1. the sleeve comprises a sleeve body 11, a sleeve body 12, a blocking fin 13, an internal threaded pipe 14, an external threaded cap 14, a sealing end cover 14a, a butt joint insertion pipe 15 and an anti-falling taper groove 15 a;
2. the device comprises a piston, 21, a hard base, 21a, a base outer cylinder, 21b, a rotation stopping taper hole, 21c, a clamping ring groove, 21d, a radial slot, 21e, a sliding inserted bar, 21f, a limiting stop head, 22, a breaking and dismantling device, 22a, a perforated sleeve disc, 22b, a round head inserted bar, 22c, a radial sliding block, 22d, a breaking and dismantling rod body, 22e, an inclined end face, 22f, a pointed tool bit, 23, a soft skin, 24, a piston plug, 24a drop-proof pointed hook and 24b, a thin-diameter connecting rod, wherein the piston is sleeved on the piston;
3. the external screw-thread connecting device comprises a pull rod, 31, an external cylinder component, 31a, an external screw-thread pipe, 31b, a rotation stopping conical ring, 31c, a fixed rotating shaft, 31d, a hinged swing arm, 31e, a kidney-shaped through hole, 31f, a front locking ring, 31g, an easy-to-break tooth hole, 32, an internal rod component, 32a, an internal core rod, 32b, an axial side hole, 32c, a spring stop disc, 32d, a sliding sleeve ring, 32e, a side plug, 32f, a swing plug, 32g, a compression spring, 32h, a rear locking disc, 33, a threaded base, 33a side sleeve, 33b, a side fin body, 33c, a sleeve side hole, 33d, an external communication hole, 33e, an internal screw-thread arc surface, 33f, a sliding side plate, 34, a pull rod side fin, 35, a circular push plate, 36, and 37, and a connecting.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
A self-destruction pre-filled syringe is characterized in that: the method comprises the following steps:
sleeve 1, sleeve 1 includes sleeve body 11 at least, establishes fender wing 12 at 11 outer wall lower extremes of sleeve body, establishes at the internal thread pipe 13 of 11 front ends of sleeve body, the external screw thread cap 14 on the internal thread pipe 13 of spiro union, 11 front end centers of sleeve body still communicate and are equipped with butt joint intubate 15, the 14 front ends of external screw thread cap be equipped with butt joint intubate 15 in close contact with and then sealed end cover 14 a:
the piston 2 is connected to the inner wall of the sleeve 1 in a sealing way;
and the pull rod 3 is arranged at the lower end of the piston 2.
Furthermore, the pull rod 3 comprises pull rod side fins 34 which are uniformly distributed in the circumferential direction, and a circular push plate 35 which is fixed at the lower end of each pull rod side fin 34, wherein a threaded base 36 is arranged at the front end of each pull rod side fin 34, a connecting screw rod 37 is arranged at the front end of each threaded base 36, and the rear end of the piston 2 is in threaded connection with a threaded hole of the connecting screw rod 37.
Furthermore, the middle part of the pull rod side fin 34 is provided with an easy-to-break tooth hole 34g along the radial direction.
Furthermore, the outer side surface of the pull rod side fin 34 is bent upwards and outwards to form a side fin clamping tongue a, and an annular clamping groove b for clamping the side fin clamping tongue a is formed in the inner wall of the sleeve body 11.
Furthermore, a piston plug 24 is formed at the front end of the piston 2, and the piston plug 24 comprises an anti-drop sharp hook 24a with a narrow front part and a wide back part, and a small-diameter connecting rod 24b which is arranged at the back end of the anti-drop sharp hook 24a and is connected with the piston 2; an anti-falling taper groove 15a for blocking the anti-falling sharp hook 24a is formed on the inner wall of the butt joint insertion pipe 15.
The invention also discloses a self-destruction pre-charging type washing pipe injector of another improved scheme, which also comprises:
sleeve 1, sleeve 1 includes sleeve body 11 at least, establishes fender wing 12 at 11 outer wall lower extremes of sleeve body, establishes at the internal thread pipe 13 of 11 front ends of sleeve body, the external screw thread cap 14 on the internal thread pipe 13 of spiro union, 11 front end centers of sleeve body still communicate and are equipped with butt joint intubate 15, the 14 front ends of external screw thread cap be equipped with butt joint intubate 15 in close contact with and then sealed end cover 14 a:
the piston 2 is connected to the inner wall of the sleeve 1 in a sealing way;
and the pull rod 3 is arranged at the lower end of the piston 2.
What is different is that the piston 2 and the pull rod 3 of the solution have a more perfect structural design:
the piston 2 comprises a hard base 21, a breaking and dismantling device 22 and a soft skin 23;
the hard base 21 comprises a hollow cylindrical base outer cylinder 21a with an opening at the rear end, a rotation stopping taper hole 21b with a narrow front part and a wide rear part is formed at the rear end of the base outer cylinder 21a, a clamping ring groove 21c is further formed at the rear half part of the inner wall of the base outer cylinder 21a, radial slots 21d which are radially arranged are uniformly distributed on the front end surface of the base outer cylinder 21a in the circumferential direction, a sliding insertion rod 21e is forwards arranged in the center of the front end surface of the base outer cylinder 21a, and a limit stop head 21f is formed at the front end of the sliding insertion rod 21 e;
the breaking-in device 22 comprises a perforated sleeve disc 22a slidably sleeved on the sliding insertion rod 21e, round-head insertion rods 22b circumferentially and uniformly distributed on the front end face of the perforated sleeve disc 22a, radial sliders 22c which correspond to the radial slots 21d one by one and are in insertion fit with the radial sliders 22d, a breaking-in rod 22d arranged at the front end of the radial sliders 22c, an inclined end face 22e arranged at the proximal end of the breaking-in rod 22d, and a pointed cutter head 22f arranged at the distal end of the breaking-in rod 22d, wherein the inclined end face 22e is inclined towards the sliding insertion rod 21e from front to back gradually, and the inclined end face 22e is abutted against the outer edge of the rear end of the perforated sleeve disc 22 a;
the soft skin 23 is fixedly wrapped outside the hard base 21 and the breaking-in device 22, and the periphery of the soft skin 23 is in sealing fit with the inner wall of the sleeve 1;
the pull rod 3 comprises an outer cylinder component 31, an inner rod component 32 and a side fin component 33;
the outer cylinder assembly 31 comprises an outer threaded pipe 31a, a rotation-stopping conical ring 31b which is arranged at the front end of the outer threaded pipe 31a and is in locking fit with the rotation-stopping conical hole 21b, a fixed rotating shaft 31c which is uniformly distributed on the front end surface of the rotation-stopping conical ring 31b in the circumferential direction, a hinged swing arm 31d which is rotatably arranged on the fixed rotating shaft 31c, a waist-shaped through hole 31e which is arranged at the end close to the center of the hinged swing arm 31d in the length direction, and a front locking ring 31f which is arranged at the rear end of the outer threaded pipe 31a, wherein locking threads which are arranged in the radial direction are uniformly distributed on the rear end surface of the front locking ring;
the inner rod assembly 32 comprises an inner core rod 32a rotatably inserted into the outer threaded tube 31a, an axial side hole 32b axially formed at the front end of the outer wall of the inner core rod 32a, a spring stop disc 32c formed on the front end surface of the inner core rod 32a, and a sliding collar 32d slidably sleeved on the inner core rod 32a, the side plug 32e is arranged on the inner wall of the sliding sleeve ring 32d and can be slidably inserted into the axial side hole 32b, the swing plug 32f is circumferentially and uniformly distributed on the rear end face of the sliding sleeve ring 32d, corresponds to the waist-shaped through hole 31e one by one and is in plug fit with the waist-shaped through hole, the compression spring 32g is sleeved on the built-in core rod 32a and is positioned between the spring baffle disc 32c and the sliding sleeve ring 32d, the rear locking disc 32h is arranged at the rear end of the built-in core rod 32a and is in locking fit with the front locking ring 31f, and radially arranged locking grains are circumferentially and uniformly distributed on the front end face of the rear locking disc;
the side fin assembly 33 comprises a side fin sleeve 33a sleeved outside the external threaded pipe 31a, a side fin body 33b distributed on the side sleeve 33a in a cross shape, sleeve side holes 33c uniformly distributed on the side fin sleeve 33a in the circumferential direction and at positions corresponding to the side fin body 33b, a communicating outer hole 33d formed in the side fin body 33b and communicated with the sleeve side holes 33c, an internal thread arc surface 33e arranged in the sleeve side holes 33c in a slidable manner along the axial direction, and a sliding side piece 33f arranged on the outer wall of the internal thread arc surface 33e and penetrating through the communicating outer hole 33 d; the internal thread arc surface 33e is in threaded connection with the external thread pipe 31a.
Further, a piston plug 24 is formed at the front end of the piston 2, and the piston plug 24 comprises an anti-falling sharp hook 24a with a narrow front part and a wide rear part and a small-diameter connecting rod 24b which is arranged at the rear end of the anti-falling sharp hook 24a and is connected with the middle part of the front end of the piston 2; an anti-falling taper groove 15a for blocking the anti-falling sharp hook 24a is formed on the inner wall of the butt joint insertion pipe 15.
Furthermore, the outer side surface of the sliding side piece 33f is provided with a side fin locking tongue a which is bent upwards and outwards, and a circle of annular clamping groove b for clamping the side fin locking tongue a is formed on the inner wall of the sleeve body 11.
Further, the sliding insertion rod 21e is a rod body with a non-circular cross section, the middle part of the sleeve disc with a hole 22a is provided with an insertion hole with a non-circular cross section matched with the sliding insertion rod 21e, and preferably, the cross section of the sliding insertion rod 21e is triangular or rectangular.
The use method of the self-destruction pre-filled syringe comprises the following steps:
the external thread cap 14 and the sealing end cover 14a are unscrewed from the internal thread tube 13, and the butt joint insertion tube 15 is connected with the infusion equipment;
the pull rod 3 is pushed to drive the piston 2 to move forwards, and the injection liquid carried in the injector is pushed into the body of a patient through the infusion equipment.
The self-destruction method of the self-destruction pre-filled syringe injector with the improved scheme comprises the following steps:
step 1, piston 2:
step 1.1, the primary locking of the piston 2 is disabled:
when the piston 2 moves to the front end of the inner wall of the sleeve 1, the anti-falling sharp hook 24a is inserted into the anti-falling conical groove 15a, so that the piston 2 cannot fall off backwards, and the primary locking fails;
step 1.2, further locking failure of the piston 2:
the pull rod 3 is continuously pushed forwards, so that the front end of the piston 2 is extruded with the front end of the inner wall of the sleeve 1, and the breaking-in device 2 is inserted into the inner wall of the sleeve 1:
the round head inserted bar 22b and the perforated sleeve disc 22a are extruded by the inner wall of the sleeve 1 and move backwards along the sliding inserted bar 21 e;
the perforated sleeve disc 22a drives the inclined end face 22e, the breaking and dismantling rod body 22d, the radial slide block 22c and the pointed cutter head 22f to move outwards along the radial slot 21d, the pointed cutter head 22f penetrates through the soft skin 23 and then penetrates into the inner wall of the sleeve 1, the piston 2 is further locked and loses efficacy, and meanwhile, the air tightness of the inner wall of the sleeve 1 and the air tightness of the piston 2 are damaged;
step 2.1, the connection relationship between the pull rod 3 and the piston 2 is stable under normal conditions:
the posture of the pull rod 3 is stable:
the rear end of the compression spring 32g is fixedly abutted against the sliding sleeve ring 32d and the fixed rotating shaft 31c, and the front end of the compression spring 32g acts on the spring baffle disc 32c to drive the built-in core rod 32a and the rear locking disc 32h to move forwards relative to the outer cylinder assembly 31, so that the rotational freedom degree of the rear locking disc 32h is locked by the front locking ring 31 h;
the sliding collar 32d, the side plug 32e and the swinging plug 32f cannot rotate relative to the outer cylinder assembly 31, and the swinging plug 32f locks the posture of the hinged swinging arm 31 d;
the posture of the rod 3 with respect to the piston 2 is stabilized:
normally, the hinged swing arm 31d is locked in the locking ring groove 21c, so that the pull rod 3 cannot be pulled out from the piston 2 backwards;
meanwhile, the rotation stop cone ring 31b contacts with the rotation stop cone hole 21b to lock the rotation degree of freedom of the outer cylinder assembly 31, the outer cylinder assembly 31 cannot rotate relative to the piston 2, and the pull rod 3 cannot rotate relative to the piston 2;
step 2.2, the pull rod 3 is disengaged from the piston 2:
the outer cylinder assembly 31 is pinched, and then the rear locking disc 32h, the inner core bar 32a and the spring stop disc 32c are pulled backwards to move backwards against the compression spring 32g, the rear locking disc 32h is separated from the front locking ring 31f and is unlocked, and the outer cylinder assembly 31 and the inner rod assembly 32 restore the rotational freedom;
the rear locking disc 32h, the built-in core rod 32a and the axial side hole 32b are pinched and are made to rotate relative to the outer cylinder assembly 31, the axial side hole 32b drives the side plug 32e, the sliding sleeve ring 32d and the swing plug 32f to rotate, the swing plug 32f acts on the waist-shaped through hole 31e and drives the hinged swing arm 31d to rotate, the hinged swing arm 31d rotates until the track circle where the outer end of the hinged swing arm 31d is located is smaller than the inner diameter of the clamping ring groove 21c, the hinged swing arm can be separated from the clamping ring groove 21c, and then the pull rod 3 is detached from the piston 2.
Further, step 3 is included, the pull rod 3 is disabled or discarded:
step 3.1, the pull rod 3 is blocked and disabled:
the pull rod 3 is drawn out from the sleeve 1 backwards:
the side fin clamping tongue a is clamped in the annular clamping groove b;
the pull rod 3 cannot be pushed forwards to move forwards along the sleeve 1;
step 3.2, the pull rod 3 is discarded:
the pull rod 3 is directly and completely withdrawn from the sleeve 1 and is discarded.
As a further embodiment, a front end of the fixed rotating shaft 31c is formed with a fixed shaft head in an enlarged manner to prevent the hinged swing arm 31d from being pulled out of the fixed rotating shaft 31c forward.
As a further embodiment, the circumferential hole wall of the rotation-stopping conical hole 21b is uniformly circumferentially provided with anti-slip lines, and the circumferential outer wall of the rotation-stopping conical ring 31b is uniformly circumferentially provided with anti-slip lines.
As a further embodiment, the rear end face of the end cap 14a is provided with a sealing cushion made of soft material.
As a further embodiment, the connecting screw 37 is a hollow cylindrical rod body with a thread formed on the outer wall.
As a further embodiment, the sleeve side hole 33c is formed in an inner wide and outer narrow shape gradually narrowing in the radial direction, and the internal thread arc surface 33e does not come out of the sleeve side hole 33c due to the structural design.
Claims (9)
1. A self-destruction pre-filled syringe is characterized in that: the method comprises the following steps:
sleeve (1), sleeve (1) includes sleeve body (11) at least, establishes fender wing (12) at sleeve body (11) outer wall lower extreme, establishes internal thread pipe (13), the external screw thread cap (14) on internal thread pipe (13) of spiro union at sleeve body (11) front end, sleeve body (11) front end center still communicates and is equipped with butt joint intubate (15), external screw thread cap (14) front end be equipped with butt joint intubate (15) in close contact with and then sealed end cover (14 a):
the piston (2) is connected to the inner wall of the sleeve (1) in a sealing manner;
and the pull rod (3) is arranged at the lower end of the piston (2).
2. A self-destructing pre-filled fluvial syringe according to claim 1, wherein: the pull rod (3) comprises pull rod side fins (34) which are uniformly distributed in the circumferential direction and a circular push plate (35) fixed to the lower end of each pull rod side fin (34), a threaded base (36) is arranged at the front end of each pull rod side fin (34), a connecting screw rod (37) is arranged at the front end of each threaded base (36), and a threaded hole in threaded connection with the connecting screw rod (37) is formed in the rear end of the piston (2).
3. A self-destructing pre-filled fluvial syringe according to claim 2, wherein: the middle part of the pull rod side wing (34) is provided with an easy-to-break tooth hole (34g) along the radial direction.
4. A self-destructing pre-filled fluvial syringe according to claim 3, wherein: the outer side surface of the pull rod side fin (34) is upwards and outwards bent to be provided with a side fin clamping tongue (a), and an annular clamping groove (b) for clamping the side fin clamping tongue (a) is formed in the inner wall of the sleeve body (11).
5. A self-destroying pre-filled washtube syringe as in any one of claims 1-4, wherein: a piston plug (24) is formed at the front end of the piston (2), and the piston plug (24) comprises an anti-falling sharp hook (24a) which is narrow in front and wide in back and a small-diameter connecting rod (24b) which is arranged at the back end of the anti-falling sharp hook (24a) and connected with the piston (2); an anti-falling taper groove (15a) used for clamping the anti-falling sharp hook (24a) is formed in the inner wall of the butt joint insertion pipe (15).
6. A self-destructing pre-filled fluvial syringe according to claim 1, wherein: the piston (2) comprises a hard base (21), a breaking-in device (22) and a soft skin (23);
the hard base (21) comprises a hollow cylindrical base outer cylinder (21a) with an opening at the rear end, a rotation stopping taper hole (21b) with a narrow front end and a wide rear end is formed at the rear end of the base outer cylinder (21a), a clamping ring groove (21c) is further formed at the rear half part of the inner wall of the base outer cylinder (21a), radial slots (21d) which are radially arranged are circumferentially and uniformly distributed on the front end surface of the base outer cylinder (21a), a sliding insertion rod (21e) is forwardly arranged in the center of the front end surface of the base outer cylinder (21a), and a limiting stopper (21f) is formed at the front end of the sliding insertion rod (21 e);
the breaking-in device (22) comprises a perforated sleeve disc (22a) which is slidably sleeved on the sliding insertion rod (21e), round-head insertion rods (22b) which are circumferentially and uniformly distributed on the front end face of the perforated sleeve disc (22a), a radial sliding block (22c) which corresponds to the radial insertion slot (21d) in a one-to-one manner and is matched with the radial insertion slot (21d) in an inserting manner, a breaking-in rod body (22d) which is arranged at the front end of the radial sliding block (22c), an inclined end face (22e) which is arranged at the proximal end of the breaking-in rod body (22d), and a pointed cutter head (22f) which is arranged at the distal end of the breaking-in rod body (22d), wherein the inclined end face (22e) is inclined towards the sliding insertion rod (21e) from front to back gradually, and the inclined end face (22e) is abutted to the outer edge of the rear;
the soft skin (23) is fixedly covered outside the hard base (21) and the breaking-in device (22), and the periphery of the soft skin (23) is in sealing fit with the inner wall of the sleeve (1);
the pull rod (3) comprises an outer cylinder component (31), an inner rod component (32) and a side fin component (33);
the outer cylinder assembly (31) comprises an outer threaded pipe (31a), a rotation stopping conical ring (31b) which is arranged at the front end of the outer threaded pipe (31a) and is in locking fit with the rotation stopping conical hole (21b), a fixed rotating shaft (31c) which is uniformly distributed on the front end face of the rotation stopping conical ring (31b) in the circumferential direction, a hinged swing arm (31d) which is rotatably arranged on the fixed rotating shaft (31c), a kidney-shaped through hole (31e) which is arranged at the end, close to the center, of the hinged swing arm (31d) in the length direction, and a front locking ring (31f) which is arranged at the rear end of the outer threaded pipe (31a), wherein locking threads which are arranged in the radial direction are uniformly distributed on the rear end face of the front locking ring (;
the inner rod component (32) comprises a built-in core rod (32a) which is rotatably inserted into the outer threaded pipe (31a), an axial side hole (32b) which is formed at the front end of the outer wall of the built-in core rod (32a) along the axial direction, a spring baffle disc (32c) which is formed on the front end surface of the built-in core rod (32a), a sliding sleeve ring (32d) which is sleeved on the built-in core rod (32a), a side plug (32e) which is arranged on the inner wall of the sliding sleeve ring (32d) and is slidably inserted into the axial side hole (32b), swinging plugs (32f) which are circumferentially and uniformly distributed on the rear end surface of the sliding sleeve ring (32d), correspond to the waist-shaped through holes (31e) one by one and are in insertion fit, compression springs (32g) which are sleeved on the built-in core rod (32a) and are positioned between the spring baffle disc (32c) and the sliding sleeve ring (32d), and a rear locking disc (32h) which is arranged on the, the front end surface of the rear locking disc (32h) is circumferentially and uniformly provided with locking grains which are arranged along the radial direction;
side wing subassembly (33) establish including the cover side wing sleeve (33a), the cross distribution outside external screw thread pipe (31a) is in side wing body (33b), circumference equipartition on the sleeve (33a) are put to the side sleeve (33a) go up with side wing body (33b) correspond sleeve side hole (33c) of position department, shaping in side wing body (33b) and with the outer hole (33d) of intercommunication that sleeve side hole (33c) intercommunication set up, establish internal thread cambered surface (33e) in sleeve side hole (33c) along axial slidable, establish at internal thread cambered surface (33e) outer wall and pass the slip lateral plate (33f) that the outer hole (33d) of intercommunication set up, internal thread cambered surface (33e) and external screw thread pipe (31a) threaded connection.
7. A self-destructing pre-filled fluvial syringe according to claim 6, wherein: a piston plug (24) is formed at the front end of the piston (2), and the piston plug (24) comprises an anti-falling sharp hook (24a) which is narrow in front and wide in back and a small-diameter connecting rod (24b) which is arranged at the back end of the anti-falling sharp hook (24a) and is connected with the middle part of the front end of the piston (2); an anti-falling taper groove (15a) used for clamping the anti-falling sharp hook (24a) is formed in the inner wall of the butt joint insertion pipe (15).
8. A self-destructing pre-filled fluvial syringe according to claim 7, wherein: the outer side face of the sliding side piece (33f) is provided with a side fin clamping tongue (a) in an upward and outward bending mode, and a circle of annular clamping groove (b) used for clamping the side fin clamping tongue (a) is formed in the inner wall of the sleeve body (11).
9. A self-destructing pre-filled fluvial syringe according to claim 8, wherein: the sliding inserted bar (21e) is a bar body with a non-circular section, the middle part of the sleeve disc with the hole (22a) is provided with an inserting hole with a non-circular section matched with the sliding inserted bar (21e), and preferably, the section of the sliding inserted bar (21e) is triangular or rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010534461.2A CN111544701B (en) | 2020-06-12 | 2020-06-12 | Self-destruction pre-charging type tube-flushing injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010534461.2A CN111544701B (en) | 2020-06-12 | 2020-06-12 | Self-destruction pre-charging type tube-flushing injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111544701A true CN111544701A (en) | 2020-08-18 |
| CN111544701B CN111544701B (en) | 2021-04-09 |
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| CN202010534461.2A Active CN111544701B (en) | 2020-06-12 | 2020-06-12 | Self-destruction pre-charging type tube-flushing injector |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2577864Y (en) * | 2002-08-20 | 2003-10-08 | 上海米沙瓦医科工业有限公司 | Self-destructed disposable syringes |
| CN1678363A (en) * | 2002-09-25 | 2005-10-05 | Nmt股票上市集团公司 | A fluid-handling device |
| EP1629858A1 (en) * | 2004-08-31 | 2006-03-01 | Ming-Jeng Shue | Single-use syringe |
| KR200417514Y1 (en) * | 2006-03-15 | 2006-05-29 | 치광 수 | Safety syringe |
| CN1939548A (en) * | 2005-09-28 | 2007-04-04 | 山东威高集团医用高分子制品股份有限公司 | Self-destructive syringe |
| CN201020106Y (en) * | 2007-04-30 | 2008-02-13 | 李玉凡 | Self-destructing injector |
| CN204890820U (en) * | 2015-07-28 | 2015-12-23 | 付丽 | Disposable self destructing syringe |
| CN205322925U (en) * | 2016-01-25 | 2016-06-22 | 浙江一益医疗器械有限公司 | Novel aseptic syringe of self -destruction formula |
| CN205339766U (en) * | 2015-09-30 | 2016-06-29 | 淮安市恒春医疗器材有限公司 | Circular gasket self -destruction formula syringe of disposable |
| CN107441593A (en) * | 2017-09-14 | 2017-12-08 | 石家庄鑫富达医药包装有限公司 | A kind of precharging type syringe |
| CN107469194A (en) * | 2017-09-14 | 2017-12-15 | 石家庄鑫富达医药包装有限公司 | A kind of pre-filled high-temperature sterilization syringe |
| CN208958988U (en) * | 2018-08-27 | 2019-06-11 | 鹰潭荣嘉集团医疗器械实业有限公司 | A kind of novel self-destructing sterilized syringes |
| CN111135390A (en) * | 2020-01-09 | 2020-05-12 | 湖南省绿洲惠康发展有限公司 | Disposable stripping type self-destruction syringe |
-
2020
- 2020-06-12 CN CN202010534461.2A patent/CN111544701B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2577864Y (en) * | 2002-08-20 | 2003-10-08 | 上海米沙瓦医科工业有限公司 | Self-destructed disposable syringes |
| CN1678363A (en) * | 2002-09-25 | 2005-10-05 | Nmt股票上市集团公司 | A fluid-handling device |
| EP1629858A1 (en) * | 2004-08-31 | 2006-03-01 | Ming-Jeng Shue | Single-use syringe |
| CN1939548A (en) * | 2005-09-28 | 2007-04-04 | 山东威高集团医用高分子制品股份有限公司 | Self-destructive syringe |
| KR200417514Y1 (en) * | 2006-03-15 | 2006-05-29 | 치광 수 | Safety syringe |
| CN201020106Y (en) * | 2007-04-30 | 2008-02-13 | 李玉凡 | Self-destructing injector |
| CN204890820U (en) * | 2015-07-28 | 2015-12-23 | 付丽 | Disposable self destructing syringe |
| CN205339766U (en) * | 2015-09-30 | 2016-06-29 | 淮安市恒春医疗器材有限公司 | Circular gasket self -destruction formula syringe of disposable |
| CN205322925U (en) * | 2016-01-25 | 2016-06-22 | 浙江一益医疗器械有限公司 | Novel aseptic syringe of self -destruction formula |
| CN107441593A (en) * | 2017-09-14 | 2017-12-08 | 石家庄鑫富达医药包装有限公司 | A kind of precharging type syringe |
| CN107469194A (en) * | 2017-09-14 | 2017-12-15 | 石家庄鑫富达医药包装有限公司 | A kind of pre-filled high-temperature sterilization syringe |
| CN208958988U (en) * | 2018-08-27 | 2019-06-11 | 鹰潭荣嘉集团医疗器械实业有限公司 | A kind of novel self-destructing sterilized syringes |
| CN111135390A (en) * | 2020-01-09 | 2020-05-12 | 湖南省绿洲惠康发展有限公司 | Disposable stripping type self-destruction syringe |
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| Publication number | Publication date |
|---|---|
| CN111544701B (en) | 2021-04-09 |
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