CN113018589A - Puncture-proof disposable syringe - Google Patents
Puncture-proof disposable syringe Download PDFInfo
- Publication number
- CN113018589A CN113018589A CN202110191665.5A CN202110191665A CN113018589A CN 113018589 A CN113018589 A CN 113018589A CN 202110191665 A CN202110191665 A CN 202110191665A CN 113018589 A CN113018589 A CN 113018589A
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- section
- head
- shell
- rod
- tube
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- 239000000463 material Substances 0.000 claims abstract description 8
- 239000011521 glass Substances 0.000 claims abstract description 6
- 210000000013 bile duct Anatomy 0.000 claims description 17
- 230000004323 axial length Effects 0.000 claims description 6
- 239000003814 drug Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 206010033675 panniculitis Diseases 0.000 description 4
- 210000004304 subcutaneous tissue Anatomy 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
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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
-
- 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
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
-
- 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
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Environmental & Geological Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides a puncture-proof disposable syringe, comprising: the piston, the spring, the shell, the inner container tube, the inner sleeve and the needle head; wherein the inner container pipe is made of glass material; the inner sleeve is sleeved in the shell, the inner liner pipe is sleeved in the inner sleeve partially, and the inner liner pipe is positioned in the middle position between the shell and the inner sleeve; the spring is arranged between the head of the shell and the head of the inner sleeve; a needle head is fixed at the tail end of the inner container tube; the tail end of the piston penetrates into the inner container pipe from the head of the shell. The puncture-proof disposable syringe has the characteristics of simple operation, safe use and the like, and can be widely applied to the medical field.
Description
Technical Field
The invention relates to the technical field of syringes, in particular to a puncture-proof disposable syringe.
Background
In hospitals or clinics, after a disposable syringe is used, the syringe and a needle need to be intensively treated in order to prevent and isolate infection. In the process of separating the syringe and the needle, the needle is easy to stab medical staff, so that the medical staff is injured and even infected or infected. At present, many medical and scientific research personnel also aim to solve the problems and also apply for patents about puncture-proof syringes; however, these patents are not made and widely spread due to the limitation of materials and the like. Further, even the syringe of the type already manufactured has many problems such as troublesome use, and thus has not been widely used.
Therefore, in the prior art, no puncture-proof disposable syringe which is simple to operate and safe to use is available.
Disclosure of Invention
In view of the above, the main object of the present invention is to provide a puncture-proof disposable syringe which is easy to operate and safe to use.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a puncture resistant disposable syringe comprising: the piston, the spring, the shell, the inner container tube, the inner sleeve and the needle head; wherein the inner container pipe is made of glass material;
the inner sleeve is sleeved in the shell, the inner liner pipe is sleeved in the inner sleeve partially, and the inner liner pipe is positioned in the middle position between the shell and the inner sleeve; the spring is arranged between the head of the shell and the head of the inner sleeve; a needle head is fixed at the tail end of the inner container tube; the tail end of the piston penetrates into the inner container pipe from the head of the shell.
In summary, before the puncture-proof disposable injector is used, most of the piston is positioned outside the port at the head of the shell, and the bottom of the piston is positioned in the inner bile duct because the inner bile duct is prefilled with the liquid medicament; the inner sleeve is positioned at the middle front part in the shell, and the spring is compressed between the head part of the shell and the head part of the inner sleeve; the needle fixed at the tail end of the inner bile duct extends out of the port at the tail end of the shell. In practical application, the puncture-preventing disposable syringe is also provided with a needle cap sleeved on the needle head before use. When the puncture-proof disposable injector is used, when the needle head is pricked into subcutaneous tissue, the head of the piston is pressed by hand, the piston extrudes the liquid medicament in the inner tube towards the tail end of the shell, and the liquid medicament is injected into the subcutaneous tissue through the needle head. When the head of the piston is completely buckled into the head of the shell and can not be pushed, the injection is finished; then, the force larger than that in medicine pushing is continuously applied to the head of the piston, at the moment, the inner sleeve is ejected towards the outer side of the tail end of the puncture-proof disposable syringe, the head of the inner sleeve is clamped at the tail of the shell, the rest part of the inner sleeve is ejected out of the tail end of the puncture-proof disposable syringe, and the needle is wrapped in the inner sleeve by the inner sleeve, so that medical staff are prevented from being punctured by the needle. From the whole process of the operation, the anti-stab disposable syringe is very convenient to operate.
Drawings
Fig. 1 is a schematic view of the whole composition structure of the puncture-proof disposable syringe before use.
Fig. 2 is a schematic view of the whole composition structure of the puncture-proof disposable syringe of the present invention after use.
Fig. 3 is a schematic view of the composition structure of the piston rod according to the present invention.
Fig. 4 is a schematic view of the structure of the piston sleeve according to the present invention.
Fig. 5 is a front view of the inner bile duct component structure of the present invention.
FIG. 6 is a left side view of the inner tube assembly of the present invention.
Fig. 7 is an elevational view of the inner sleeve assembly of the present invention.
Fig. 8 is a top view of the inner sleeve composition of the present invention.
Fig. 9 is a front view of the housing composition of the present invention.
Fig. 10 is a left side view of the housing assembly of the present invention.
Fig. 11 is a schematic structural diagram of the connector according to the present invention.
Fig. 12 is a schematic structural diagram of the first locking member according to the present invention.
Fig. 13 is a schematic structural diagram of the second locking member according to the present invention.
Fig. 14 is a front view of the third retainer component according to the present invention.
Fig. 15 is a left side view of the third retainer constituting structure according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic view of the whole composition structure of the puncture-proof disposable syringe before use. Fig. 2 is a schematic view of the whole composition structure of the puncture-proof disposable syringe of the present invention after use. As shown in fig. 1 and fig. 2, the present invention relates to a puncture-proof disposable injector, which comprises: the device comprises a piston 1, a spring 2, a shell 3, a liner tube 4, an inner sleeve 5 and a needle 6; wherein, the inner liner tube 4 is made of glass material;
the inner sleeve 5 is sleeved in the shell 3, part of the inner liner tube 4 is sleeved in the inner sleeve 5, and the inner liner tube 4 is positioned in the middle of the shell 3 and the inner sleeve 5; the spring 2 is arranged between the head of the shell 3 and the head of the inner sleeve 5; a needle 6 is fixed at the tail end of the inner bile duct 4; the tail end of the piston 1 penetrates into the inner liner 4 from the head of the shell 3.
In practical application, the piston 1, the housing 3 and the inner sleeve 5 are all made of plastic grease, PPT and other materials.
In practical application, before the disposable syringe for preventing puncture is shipped, the inner container pipe 4 is filled with a certain dosage of liquid medicament in advance, and the dosage of the liquid medicament can be specifically determined according to actual needs.
In a word, before the puncture-proof disposable injector is used, most of the piston is positioned outside the port at the head part of the shell due to the fact that the inner bile duct is prefilled with the liquid medicament, and the bottom of the piston is positioned in the inner bile duct; the inner sleeve is positioned at the middle front part in the shell, and the spring is compressed between the head part of the shell and the head part of the inner sleeve; the needle fixed at the tail end of the inner bile duct extends out of the port at the tail end of the shell. In practical application, the puncture-preventing disposable syringe is also provided with a needle cap sleeved on the needle head before use. When the puncture-proof disposable injector is used, when the needle head is pricked into subcutaneous tissue, the head of the piston is pressed by hand, the piston extrudes the liquid medicament in the inner tube towards the tail end of the shell, and the liquid medicament is injected into the subcutaneous tissue through the needle head. When the head of the piston is completely buckled into the head of the shell and can not be pushed, the injection is finished; then, the force larger than that in medicine pushing is continuously applied to the head of the piston, at the moment, the inner sleeve is ejected towards the outer side of the tail end of the puncture-proof disposable syringe, the head of the inner sleeve is clamped at the tail of the shell, the rest part of the inner sleeve is ejected out of the tail end of the puncture-proof disposable syringe, and the needle is wrapped in the inner sleeve by the inner sleeve, so that medical staff are prevented from being punctured by the needle. From the whole process of the operation, the anti-stab disposable syringe is very convenient to operate.
Fig. 3 is a schematic view of the composition structure of the piston rod according to the present invention. Fig. 4 is a schematic view of the structure of the piston sleeve according to the present invention. As shown in fig. 3 and 4, in the present invention, a piston 1 includes: a piston cap 11, a piston rod and a piston sleeve 13; wherein, the piston sleeve 13 is made of rubber material; the piston rod is five section formula body structures, from the head end to the tail end of piston rod, divide into in proper order: the tail end of the first section of rod 121 is connected with the head end of the second section of rod 122, the tail end of the second section of rod 122 is connected with the head end of the third section of rod 123, the tail end of the third section of rod 123 is connected with the tail end of the fourth section of rod 124, the tail end of the fourth section of rod 124 is connected with the head end of the fifth section of rod 125, the head end of the first section of rod 121 serves as the head end of a piston rod, and the tail end of the fifth section of rod 125 serves as the tail end of the piston rod; moreover, along the direction from the head end to the tail end of the piston rod, the diameter of the first section rod 121, the diameter of the second section rod 122, the diameter of the third section rod 123 and the diameter of the fourth section rod 124 are gradually reduced, the diameter of the fifth section rod 125 is larger than that of the fourth section rod 124, and the diameter of the fifth section rod 125 is smaller than that of the third section rod 123; the axial length of the fifth rod segment 125 is much less than the axial length of the first rod segment 121, the axial length of the second rod segment 122, the axial length of the third rod segment 123, and the axial length of the fourth rod segment 124.
The piston cap 11 is fixedly sleeved on the head end of the piston rod, and the piston sleeve 13 is sleeved on the fourth section rod 124 and the fifth section rod 125; the piston sleeve 13 is a cavity with a T-shaped cross section, the part with the larger diameter accommodates the fifth rod section 125, and the part with the smaller diameter accommodates the fourth rod section 124; the outer circumference of the piston sleeve 13 is arranged in a wave shape, and the outer tail end of the piston sleeve 13 is arranged in an arrow shape.
The third-stage rod 123 is further provided with 1 transverse through hole 126, and the axial direction of the transverse through hole 126 is perpendicular to the axial direction of the third-stage rod 123.
In practical application, in the propelling process of the piston 1 in the inner bile duct 4, the piston sleeve 13 has the function of sealing the inner bile duct 4; the transverse through-hole 126 has the effect of balancing the air pressure outside the piston sleeve 13 to further ensure the tightness of the piston sleeve 13.
In practical application, the piston cap 11 and the piston rod may be an integrated structure, and the piston cap 11 and the piston rod are made of plastic.
Fig. 5 is a front view of the inner bile duct component structure of the present invention. FIG. 6 is a left side view of the inner tube assembly of the present invention. As shown in fig. 5 and 6, in the present invention, the inner container tube 4 is a four-section integrated structure, and includes, from the head end to the tail end of the inner container tube 4: a tube seat sheet 41, a tube cavity section 42, a first needle fixing section 43 and a second needle fixing section 44; wherein, the tube seat sheet 41 is a glass sheet with a through hole; the diameter of the through hole on the tube seat sheet 41 is the same as the inner diameter of the tube cavity section 42, and the through hole on the tube seat sheet 41 corresponds to the inner cavity of the tube cavity section 42;
one end of the tube seat sheet 41 is fixedly connected with the head end of the tube cavity section 42, the tail end of the tube cavity section 42 is connected with the head end of the first needle fixing section 43, and the tail end of the first needle fixing section 43 is fixedly connected with the head end of the second needle fixing section 44; the tail end of the cavity section 42 is contracted into a hole which has the same size with the cross section of the tail end of the needle 6 and is used for fixing the tail end of the needle 6, and the tail end of the cavity section 42 is communicated with the inside of the needle 6; the needle head 6 sequentially passes through the first needle fixing section 43 and the second needle fixing section 44, the needle head 6 passes through the tail end of the second needle fixing section 44, and the head of the needle head 6 is positioned outside the tail end of the inner bile duct 4.
Fig. 7 is an elevational view of the inner sleeve assembly of the present invention. Fig. 8 is a top view of the inner sleeve composition of the present invention. As shown in fig. 7 and 8, in the present invention, the inner tube 5 includes: a tube body 51, a tube umbrella and a tube body interface 53; the tube umbrella is fixed at the head end of the tube body 51, the tail end of the tube body 51 is also provided with a tube body interface 53, and the tube body 51 and the tube body interface 53 are of an integral structure; the diameter of the tube body interface 53 is smaller than that of the tube body 51; the lower part of the tube body 51 is uniformly distributed with 3 long and narrow long holes 54 along the axial direction, and each long hole 54 is opened along the axial direction of the tube body 51.
The pipe umbrella includes: 2 first umbrella pieces 521, 2 second umbrella pieces 522; the first umbrella sheet 521 is of an arc-shaped T-shaped structure, and the first umbrella sheet 521 is wide in head end and narrow in tail end; the second umbrella piece 522 is of an arc ladder-shaped structure, the head end of the second umbrella piece 522 is wide, the tail end of the second umbrella piece 522 is narrow, and two sides of the head end of the second umbrella piece 522 are respectively provided with 1 spine; the inner sides of the tail ends of the 2 first umbrella pieces 521 and the inner sides of the tail ends of the 2 second umbrella pieces 522 are uniformly fixed on the outer side of the head end of the pipe body 51 at intervals along the circumferential direction of the pipe body 51, the 2 first umbrella pieces 521 are symmetrically arranged, and the 2 second umbrella pieces 522 are also symmetrically arranged; the head ends of the 2 first umbrella pieces 521 and the 2 second umbrella pieces are free ends along the axial direction of the pipe body 51.
Fig. 9 is a front view of the housing composition of the present invention. Fig. 10 is a left side view of the housing assembly of the present invention. Fig. 11 is a schematic structural diagram of the connector according to the present invention. As shown in fig. 9, 10, and 11, in the present invention, the housing 3 includes: a shell head 31, a first section of shell tube 32, a second section of shell tube 33 and a connecting head 30; wherein, the shell head 31, the first section of shell tube 32 and the second section of shell tube 33 are of a three-section type integrated structure, and the connector 30 is a split part; shell head 31 is a tubular structure with a T-shaped through hole, and shell head 31 is further provided with 4 first locking members 311, 2 second locking members 312, and 2 third locking members 313.
The free end of the shell head 31 is used as the head end of the shell 3, one end of the connector 30 is inserted into the free end of the second section of shell tube 33, and the other end of the connector 30 is used as the tail end of the shell 3; the outer diameter of the shell head 31 is larger than the outer diameters of the first section of shell tube 32 and the second section of shell tube 33, the outer diameter of the first section of shell tube 32 is the same as the outer diameter of the second section of shell tube 33, and the inner diameter of the first section of shell tube 32 is smaller than the inner diameter of the second section of shell tube 33; the inner diameter of the bottom end of the through hole in the shell head 31 is the same as that of the first section of shell tube 32, and the inner diameter of the bottom end of the through hole in the shell head 31 is smaller than that of the rest part of the through hole in the shell head 31.
Along the circumferential direction of the case head 31, 4 first locking members 311 are uniformly fixed on the inner side of the bottom end of the case head 31. Along the circumferential direction of the shell head 31, 1 second retaining member 312 or 1 third retaining member 313 is fixed at the middle position between every 2 first retaining members 311 on the inner side of the bottom end of the shell head 31. Furthermore, the 4 first locking members 311 are symmetrical to each other, the 2 second locking members 312 are symmetrical to each other, and the 2 third locking members 313 are symmetrical to each other.
The connector 30 includes a connector tube 301 and a connector edge 302, the connector tube 301 is a flared tubular structure, and the connector edge 302 is disposed on an opening end surface of the connector tube 301. The inner diameter of the connector 30 is larger than the outer diameter of the pipe body 51, and the inner diameter of the connector 30 is smaller than the outer diameter of the pipe umbrella.
One end of the connector 30 is inserted into the free end of the second casing 33, and the other end of the connector edge 302 is inserted into the free end of the second casing 33.
Fig. 12 is a schematic structural diagram of the first locking member according to the present invention. As shown in fig. 12, in the present invention, the first locking member 311 is in the shape of a hook, and one end without a hook is fixed to the inner side of the bottom end of the case head 31.
Fig. 13 is a schematic structural diagram of the second locking member according to the present invention. As shown in fig. 13, in the present invention, the side of the second locking member 312 close to the outer periphery of the housing head 31 is a circular arc surface, and the side of the second locking member 312 away from the outer periphery of the housing head 31 is an oblique side; the bottom end surface of the second engaging member 312 is fixed to the inner side of the bottom end of the housing head 31.
Fig. 14 is a front view of the third retainer component according to the present invention. Fig. 15 is a left side view of the third retainer constituting structure according to the present invention. As shown in fig. 14 and 15, in the present invention, the third clamping member 313 includes a vertical surface, and an inward horizontal boss 3130 is disposed at the middle part of the inner side of the vertical surface; the horizontal cross section of the third clamping member 313 is a trapezoid structure with an arc, and the bottom end face of the third clamping member 313 is fixed on the inner side of the bottom end of the case head 31. The height of the horizontal boss 3130 from the inside of the bottom end of the case head 31 is the same as the height of the top end of the second locking member 312 from the inside of the bottom end of the case head 31. The height of the horizontal boss 3130 from the inner side of the bottom end of the case head 31 and the height of the top end of the second locking element 312 from the inner side of the bottom end of the case head 31 are both less than the height of the hook part of the first locking element 311 from the inner side of the bottom end of the case head 31.
In summary, before the anti-puncturing disposable syringe is used, the tube seat piece 41 of the inner tube 4 pre-filled with the liquid medicament is positioned at the top end of the hook part of the first blocking part 311 in the casing head 31; the umbrella of the inner sleeve 5 is positioned on the upper part of the first section of the shell 32, the first umbrella sheet 521 is pressed against the inner side of the top end of the second clamping piece 312, the second umbrella sheet 522 is pressed against the bottom of the horizontal boss 3130 of the third clamping piece 313, and 2 spines on two sides of the top end of the second umbrella sheet 522 are respectively positioned on two sides of the horizontal boss 3130. At the moment, the spring is in a compressed state between the head space of the inner sleeve surrounded by the first umbrella piece 521 and the second umbrella piece 522 and the head of the shell, most of the piston is positioned outside the port of the head of the shell, and the bottom of the piston is positioned in the inner bile duct; the needle fixed at the tail end of the inner bile duct extends out of the port at the tail end of the shell. When the anti-stabbing disposable syringe is used for completing injection, the inner side of the top end of the piston cap 11 is completely attached to the outer surface of the free end of the tube seat sheet 41. Then, a certain force is continuously applied to the outer side of the top end of the piston cap 11, and at this time, the tube seat piece 41 is pressed and then falls down from the top end of the hook part of the first locking piece 311 to the outer side of the top end of the second locking piece 312 and the top of the horizontal boss 3130 of the third locking piece 313; moreover, the external force is continuously transmitted through the falling stem piece 41, and 2 spines at two sides of the top ends of the first umbrella piece 521 and the second umbrella piece 522 are simultaneously pressed by the external force; this pressure, in combination with the spring force of the compressed spring, pushes the inner cannula 5 to eject towards the rear of the anti-puncture disposable syringe according to the invention. The tube umbrella of the popped-up inner sleeve 5 is positioned on the second section of shell tube 32, the free end of the first umbrella piece 521 and the free end of the second umbrella piece 522 both extend outwards, and because the inner diameter of the first section of shell tube 32 is smaller than the inner diameter of the second section of shell tube 33, the free end of the first umbrella piece 521 and the free end of the second umbrella piece 522 both prop against the edge between the first section of shell tube 32 and the second section of shell tube 33, and the popped-up inner sleeve 5 cannot reversely enter the first section of shell tube 32. At this time, the spring is in a free state; because the inner diameter of the connector 30 is smaller than the outer diameter of the tube umbrella, the tube umbrella of the inner sleeve 5 is clamped at the tail part of the shell, the rest part of the inner sleeve is popped out of the tail end of the puncture-proof disposable syringe, and the needle head is wrapped in the inner sleeve, so that the needle head is prevented from puncturing medical care personnel.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A puncture resistant disposable syringe, comprising: the piston, the spring, the shell, the inner container tube, the inner sleeve and the needle head; wherein the inner container pipe is made of glass material;
the inner sleeve is sleeved in the shell, the inner liner pipe is sleeved in the inner sleeve partially, and the inner liner pipe is positioned in the middle position between the shell and the inner sleeve; the spring is arranged between the head of the shell and the head of the inner sleeve; a needle head is fixed at the tail end of the inner container tube; the tail end of the piston penetrates into the inner container pipe from the head of the shell.
2. A puncture resistant disposable syringe according to claim 1, wherein the piston comprises: a piston cap, a piston rod and a piston sleeve; wherein, the piston sleeve is made of rubber material;
the piston rod is five section formula body structures, from the head end to the tail end of piston rod, divide into in proper order: the tail end of the first section rod is connected with the head end of the second section rod, the tail end of the second section rod is connected with the head end of the third section rod, the tail end of the third section rod is connected with the tail end of the fourth section rod, the tail end of the fourth section rod is connected with the head end of the fifth section rod, the head end of the first section rod is used as the head end of a piston rod, and the tail end of the fifth section rod is used as the tail end of the piston rod; in addition, the diameter of the first section of rod, the diameter of the second section of rod, the diameter of the third section of rod and the diameter of the fourth section of rod are all gradually reduced along the direction from the head end to the tail end of the piston rod, the diameter of the fifth section of rod is larger than that of the fourth section of rod, and the diameter of the fifth section of rod is smaller than that of the third section of rod; the axial length of the fifth section of rod is far less than that of the first section of rod, that of the second section of rod, that of the third section of rod and that of the fourth section of rod;
the piston cap is fixedly sleeved on the head end of the piston rod, and the piston sleeve is sleeved on the fourth section rod and the fifth section rod; the cross section of the interior of the piston sleeve is a T-shaped cavity, the part with the large diameter contains the fifth section of rod, and the part with the small diameter contains the fourth section of rod; the outer circumference of the piston sleeve is arranged to be wave-shaped, and the tail end of the outer part of the piston sleeve is arranged to be arrow-shaped;
the third section of rod is also provided with 1 transverse through hole, and the axial direction of the transverse through hole is vertical to the axial direction of the third section of rod.
3. A puncture-proof disposable injector according to claim 2, characterized in that the inner bile duct is a four-segment integrated structure, and comprises, from the head end to the tail end of the inner bile duct: the device comprises a tube seat sheet, a tube cavity section, a first needle fixing section and a second needle fixing section; wherein, the tube seat sheet is a glass sheet with a through hole; the diameter of the through hole on the tube seat piece is the same as the inner diameter of the tube cavity section, and the through hole on the tube seat piece corresponds to the inner cavity of the tube cavity section;
one end of the tube seat sheet is fixedly connected with the head end of the tube cavity section, the tail end of the tube cavity section is connected with the head end of the first needle fixing section, and the tail end of the first needle fixing section is fixedly connected with the head end of the second needle fixing section;
the tail end of the tube cavity section is contracted into a hole which has the same size with the cross section of the tail end of the needle head and is used for fixing the tail end of the needle head, and the tail end of the tube cavity section is communicated with the inside of the needle head; the needle head sequentially penetrates through the first needle fixing section and the second needle fixing section, the needle head penetrates through the tail end of the second needle fixing section, and the head of the needle head is located outside the tail end of the inner bile duct.
4. A puncture resistant single use syringe according to claim 1, wherein the inner sleeve comprises: a pipe body, a pipe umbrella and a pipe body interface; the pipe umbrella is fixed at the head end of the pipe body, the tail end of the pipe body is also provided with a pipe body interface, and the pipe body interface are of an integrated structure; the diameter of the pipe body interface is smaller than that of the pipe body;
3 long and narrow long holes are uniformly distributed on the lower part of the pipe body along the axial direction, and each long hole is arranged along the axial direction of the pipe body;
the pipe umbrella includes: 2 first umbrella pieces and 2 second umbrella pieces; the first umbrella sheet is provided with an arc-shaped T-shaped structure, and the head end of the first umbrella sheet is wide and the tail end of the first umbrella sheet is narrow; the second umbrella sheet is of an arc ladder-shaped structure, the head end of the second umbrella sheet is wide, the tail end of the second umbrella sheet is narrow, and two sides of the head end of the second umbrella sheet are respectively provided with 1 spine; the inner sides of the tail ends of the 2 first umbrella pieces and the inner sides of the tail ends of the 2 second umbrella pieces are uniformly fixed on the outer side of the head end of the pipe body at intervals along the circumferential direction of the pipe body, the 2 first umbrella pieces are symmetrically arranged, and the 2 second umbrella pieces are also symmetrically arranged; the head ends of the 2 first umbrella pieces and the 2 second umbrella pieces are free ends along the axial direction of the pipe body.
5. A puncture resistant disposable syringe according to claim 2, 3 or 4, wherein the housing comprises: the shell comprises a shell head, a first section of shell tube, a second section of shell tube and a connector; the shell head, the first section of shell tube and the second section of shell tube are of a three-section type integrated structure, and the connecting head is a split part; the shell head is of a tubular structure provided with a T-shaped through hole, and 4 first clamping pieces, 2 second clamping pieces and 2 third clamping pieces are further arranged in the shell head;
the shell head free end is used as the shell head end, one end of the connector is inserted into the second section of shell tube free end, and the other end of the connector is used as the shell tail end; the shell head outer diameter is larger than the first section shell tube outer diameter and the second section shell tube outer diameter, the first section shell tube outer diameter is the same as the second section shell tube outer diameter, and the first section shell tube inner diameter is smaller than the second section shell tube inner diameter; the inner diameter of the bottom end of the through hole in the shell head is the same as that of the first section of shell tube, and the inner diameter of the bottom end of the through hole in the shell head is smaller than that of the rest part of the through hole in the shell head;
along the circumferential direction of the shell head, 4 first clamping parts are uniformly fixed on the inner side of the bottom end of the shell head; along the circumferential direction of the shell head, 1 second clamping piece or 1 third clamping piece is fixed on the inner side of the bottom end of the shell head at the middle position between every 2 first clamping pieces; moreover, the 4 first clamping parts are symmetrical with each other, the 2 second clamping parts are symmetrical in opposite directions, and the 2 third clamping parts are symmetrical in opposite directions;
the connector comprises a connector pipe and a connector edge, the connector pipe is of a horn-shaped tubular structure, and the connector edge is arranged on the opening end face of the connector pipe;
one end of the connector is inserted into the free end of the second section of shell tube, and the connector is inserted into the free end of the second section of shell tube along one end;
the inner diameter of the connector is larger than the outer diameter of the pipe body, and the inner diameter of the connector is smaller than the outer diameter of the pipe umbrella.
6. A puncture-proof disposable syringe according to claim 5, wherein the first catching member is hook-shaped, and one end having no hook is fixed to the inside of the bottom end of the housing head.
7. The puncture-proof disposable syringe as claimed in claim 5, wherein the side of the second retaining member close to the outer periphery of the housing head is a circular arc surface, and the side of the second retaining member away from the outer periphery of the housing head is an inclined side;
the bottom end face of the second clamping piece is fixed on the inner side of the bottom end of the shell head.
8. A puncture-proof disposable syringe according to claim 5, characterized in that the third clamping member comprises a vertical surface, and an inward horizontal boss is arranged at the middle part of the inner side of the vertical surface; the horizontal cross section of the third clamping piece is of a trapezoid structure with an arc, and the bottom end face of the third clamping piece is fixed on the inner side of the bottom end of the shell head;
the height of the horizontal boss from the inner side of the bottom end of the shell head is the same as the height of the top end of the second clamping piece from the inner side of the bottom end of the shell head; the height of the horizontal boss from the inner side of the bottom end of the shell head and the height of the top end of the second clamping piece from the inner side of the bottom end of the shell head are both smaller than the height of the hook part of the first clamping piece from the inner side of the bottom end of the shell head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110191665.5A CN113018589B (en) | 2021-02-06 | 2021-02-06 | Disposable injector for preventing puncture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110191665.5A CN113018589B (en) | 2021-02-06 | 2021-02-06 | Disposable injector for preventing puncture |
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| Publication Number | Publication Date |
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| CN113018589A true CN113018589A (en) | 2021-06-25 |
| CN113018589B CN113018589B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110191665.5A Active CN113018589B (en) | 2021-02-06 | 2021-02-06 | Disposable injector for preventing puncture |
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Cited By (1)
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| CN113996451A (en) * | 2021-11-03 | 2022-02-01 | 焦作市妇幼保健院(焦作市妇女儿童医院) | Clinical application system for quality control of blood specimen before test |
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| Publication number | Publication date |
|---|---|
| CN113018589B (en) | 2024-02-06 |
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