CN110585512A - Emitter of retention type subcutaneous infusion apparatus and retention type subcutaneous infusion apparatus - Google Patents
Emitter of retention type subcutaneous infusion apparatus and retention type subcutaneous infusion apparatus Download PDFInfo
- Publication number
- CN110585512A CN110585512A CN201910949114.3A CN201910949114A CN110585512A CN 110585512 A CN110585512 A CN 110585512A CN 201910949114 A CN201910949114 A CN 201910949114A CN 110585512 A CN110585512 A CN 110585512A
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- Prior art keywords
- axial
- launching
- placing space
- pushing
- seat
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- 238000001802 infusion Methods 0.000 title claims abstract description 58
- 238000007920 subcutaneous administration Methods 0.000 title claims abstract description 54
- 230000014759 maintenance of location Effects 0.000 title description 5
- 230000000903 blocking effect Effects 0.000 claims abstract description 67
- 229910000831 Steel Inorganic materials 0.000 claims description 51
- 239000010959 steel Substances 0.000 claims description 51
- 230000002093 peripheral effect Effects 0.000 claims description 38
- 238000004891 communication Methods 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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
- A61M5/14—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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- 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
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M2005/1585—Needle inserters
Landscapes
- 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 invention provides a transmitting device of an indwelling subcutaneous infusion apparatus and the indwelling subcutaneous infusion apparatus, wherein the transmitting device comprises a transmitting seat, a triggering mechanism and a pushing mechanism; the first axial blocking part can move to a locking position, and the locking position is positioned in the first placing space; the second axial end of the launching seat is provided with a launching inlet, and the launching inlet, the first placing space and the launching through hole are sequentially communicated along the first axial direction; the pushing mechanism comprises a first shell, a pushing piece and a first elastic piece; the first elastic piece is connected between the first shell and the pushing piece, and the pushing piece is provided with a pushing surface back to the first elastic piece; the first shell is detachably mounted on the launching seat, and the pushing piece enters the first placing space from the inlet and faces the launching through hole. The launching seat, the trigger mechanism and the detachable pushing mechanism are used as a new launching device for a long time, so that the resource waste is reduced as much as possible, the production cost is reduced, and the environment-friendly concept is met.
Description
Technical Field
The invention relates to the technical field of infusion sets, in particular to a transmitting device of an indwelling subcutaneous infusion set and the indwelling subcutaneous infusion set.
Background
An existing indwelling subcutaneous infusion set includes a launching device and a base device detachably mounted to each other, the launching device being used to launch an indwelling needle member, the base device being used to be stuck to a human body and to fix the position of the indwelling needle after the launching device launches the indwelling needle. The launching device comprises a launching seat and a trigger mechanism connected to the launching seat, a launching tube is arranged in the launching seat and braked under the fastening of the trigger mechanism, a first spring between the launching tube and the launching seat is in a compressed state, and if the trigger mechanism is triggered and the braking on the launching tube is released, the launching tube is launched in the launching seat along the pricking direction.
The end part of the launching tube is provided with a steel needle component and a remaining needle component, and a steel needle of the steel needle component is inserted into a transfusion channel in the middle of the remaining needle body; the second spring between the steel needle component and the launching tube is in a compressed state, and the steel needle component can swing away from the fixing part between the steel needle component and the launching tube after rotating for a certain angle and rebound after the second spring releases elasticity. The launching seat is provided with a triggering bulge, when the launching tube is launched along the needle inserting direction and reaches a certain position, the remaining needle component is inserted into a human body under the support of the steel needle component, the remaining needle component is clamped into the clamping position of the base device, meanwhile, the triggering bulge touches the steel needle component, the steel needle component rotates to get rid of fixation between the steel needle component and the launching tube and rebound, the steel needle component is separated from the remaining needle component, only the remaining needle component is positioned on the human body, and then the remaining needle component is connected with the infusion assembly to carry out infusion.
The existing retention type subcutaneous infusion apparatus has the problems that the emitting device is integrally fixed and is only used once, so that the resource waste is caused, the production cost is higher, and the environment-friendly concept is not met.
Disclosure of Invention
The first purpose of the invention is to provide a launching device of a recyclable indwelling subcutaneous infusion set.
The invention also provides a recyclable indwelling subcutaneous infusion set.
A third object of the present invention is another indwelling subcutaneous infusion set that is recyclable.
The invention provides a launching device of an indwelling subcutaneous infusion set, which comprises a launching seat and a triggering mechanism connected to the launching seat; a first placing space is formed in the middle of the launching seat, a first axial end of the launching seat is provided with a first axial blocking wall for blocking the first placing space, a launching through hole communicated with the first placing space is formed in the first axial blocking wall, a triggering bulge is arranged on the surface of the first axial blocking wall facing the first placing space, and the triggering bulge is positioned on the periphery of the launching through hole; the trigger mechanism is provided with a first axial blocking part, the first axial blocking part can move to a locking position, and the locking position is positioned in the first placing space; the second axial end of the launching seat is provided with a launching inlet, and the launching inlet, the first placing space and the launching through hole are sequentially communicated along the first axial direction; the launching device also comprises a pushing mechanism, wherein the pushing mechanism comprises a first shell, a pushing piece and a first elastic piece; the first elastic piece is connected between the first shell and the pushing piece, and the pushing piece is provided with a pushing surface back to the first elastic piece; the first shell is detachably mounted on the launching seat, and the pushing piece enters the first placing space from the inlet and faces the launching through hole.
According to the scheme, the original launching tube, the steel needle component, the indwelling needle component and the like are used as disposable consumables, the launching seat, the triggering mechanism and the detachable pushing mechanism are used as a new launching device for long-term use, and the disposable consumables are simplified in structure and made of the least materials, so that resource waste is reduced as much as possible, the production cost is reduced, and the disposable launching device conforms to the environmental protection concept.
The second axial blocking part is arranged on the first shell and limits the pushing piece from the first axial direction.
As can be seen, this arrangement prevents the pusher from over-travel and causing the firing apparatus to fail or be damaged.
In a further aspect, the first housing is provided with a resilient arm, an extending end of the resilient arm is a free end, and the second axial stop is an extending end of the resilient arm.
As can be seen, this arrangement facilitates installation of the pusher into the first housing during assembly.
The first shell is provided with a first peripheral wall, and the inner periphery of the first peripheral wall is provided with at least two third axial stopping parts arranged along the circumferential direction of the first peripheral wall; the launching seat is provided with a second peripheral wall, the periphery of the second peripheral wall is provided with at least two fourth axial blocking parts arranged along the circumferential direction of the second peripheral wall, a gap is formed between every two adjacent fourth axial blocking parts, and the first crossing angle of the gap is larger than the second crossing angle of the third axial blocking parts in the circumferential direction of the second peripheral wall; the third axial blocking portion limits the fourth axial blocking portion from the first axial direction.
From the above, this arrangement can realize the quick locking between the pushing mechanism and the launching seat by pushing and rotating.
The first circumferential limiting part is arranged on the inner circumference of the first circumferential wall, the second circumferential limiting part is arranged on the outer circumference of the second circumferential wall, and the first circumferential limiting part and the second circumferential limiting part are in limiting fit in the circumferential direction of the first circumferential wall.
From top to bottom, this sets up prevents slow-witted effect when realizing rotatory pushing mechanism, and the installation position is reachd promptly in the touching.
In a further aspect, the fourth axial stop has a snap-fit recess formed by recessing in the opposite direction along the first axial direction, and the third axial stop is located in the snap-fit recess.
Therefore, the arrangement prevents the locked pushing mechanism from rotating, and the locking effect is more stable.
The trigger mechanism comprises a pressing piece, wherein the pressing piece comprises a pressing arm part and a first axial blocking part connected to the pressing arm part; the launching seat is provided with a communication port, the first extending end of the pressing arm part is rotatably connected outside the launching seat, and the first axial blocking part extends into the first placing space from the communication port.
It is thus clear that this setting user of being convenient for operates trigger mechanism, uses and experiences more humanized.
Further, the trigger mechanism further comprises a second elastic member, and the second elastic member is arranged between the second extending end of the pressing arm portion and the launching seat.
Therefore, the arrangement realizes the rebound of the pressing piece, and is more suitable for the invention for long-term use.
The indwelling subcutaneous infusion set provided by the second object of the invention comprises a transmitting device and a needle body device; the transmitting device adopts the transmitting device; the needle body device comprises a launching tube, a steel needle component, an indwelling needle component and a third elastic component; the launching tube comprises a third circumferential wall, a second placing space is formed in the third circumferential wall, an end opening is formed in the axial end part of the third circumferential wall, the second placing space is communicated with the end opening along the second axial direction, a fifth axial blocking part is arranged on the inner periphery of the end opening of the third circumferential wall, and a sixth axial blocking part is arranged on the outer periphery of the third circumferential wall; a seventh axial blocking part is arranged on the periphery of the steel needle component and provided with a guide inclined plane, and the guide inclined plane is obliquely arranged between the axial direction of the steel needle component and the circumferential direction of the steel needle component; the middle part of the indwelling needle component is provided with a transfusion channel, and the steel needle component is inserted into the transfusion channel; the steel needle component is positioned at the opening of the end part, the third elastic piece is connected between the steel needle component and the launching tube and is in an energy storage state, the acting force direction of the third elastic piece on the steel needle component is opposite to the second axial direction, and the fifth axial blocking part is in limit abutting joint with the seventh axial blocking part from the opposite direction of the second axial direction; the needle body device is detachably placed in the first placing space, the pushing piece abuts against the launching tube along the first axial direction, the first axial blocking portion located in the locking position limits the sixth axial blocking portion from the first axial direction, the steel needle component and the remaining needle component penetrate out from the launching through hole, and the guide inclined plane faces towards the triggering protrusion in the first axial direction.
The indwelling subcutaneous infusion set provided by the third object of the invention comprises a transmitting device and a base device which are detachably connected; the transmitting device adopts the transmitting device.
Drawings
FIG. 1 is an exploded view of the indwelling subcutaneous infusion set embodiment of the present invention.
FIG. 2 is an exploded view of the firing device and needle device of the indwelling subcutaneous infusion set embodiment of the present invention.
FIG. 3 is an exploded view of the hidden pushing mechanism of the launching device in the embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 4 is a cross-sectional view of a hidden pushing mechanism of the launching device in an embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 5 is a structural diagram of a launching base in an embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 6 is a cross-sectional view of the needle device in an embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 7 is a structural diagram of a steel needle component and an indwelling needle component in an embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 8 is a cross-sectional view of a launch barrel in an embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 9 is a first principle drawing of the retraction of the steel needle member in the embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 10 is a second principle view of the rebound of the steel needle member in the embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 11 is a cross-sectional view of the pushing mechanism in an embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 12 is an exploded view of the base unit of the present invention in an embodiment of a indwelling subcutaneous infusion set.
Fig. 13 is a structural diagram of a first rotary swing part and a second rotary swing part in the embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 14 is a cross-sectional view of a base unit in a first state in an embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 15 is a cross-sectional view of the base unit in a second state in an embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 16 is a cross-sectional view of a first state of an embodiment of the indwelling subcutaneous infusion set of the present invention.
FIG. 17 is a cross-sectional view of the indwelling subcutaneous infusion set embodiment of the present invention in a second configuration.
Detailed Description
Referring to fig. 1 and 2, fig. 1 is an exploded view of an embodiment of the indwelling subcutaneous infusion set of the present invention, and fig. 2 is an exploded view of a firing device and a needle device of an embodiment of the indwelling subcutaneous infusion set of the present invention. The indwelling type subcutaneous infusion device comprises a transmitting device 1, a base device 5, a protective shell 3 and a needle body device 2, wherein the protective shell 3 is detachably sleeved on the transmitting device 1, the base device 5 is detachably installed at the bottom of the transmitting device 1, the transmitting device 1 is provided with a transmitting seat 11 and a pushing mechanism 4 detachably sleeved on the transmitting seat 11, and the needle body device 2 is detachably placed in the transmitting seat 11 and is pushed and transmitted by the pushing mechanism 4 to indwelling a needle component. Both the launching device 1 and the protective casing 3 may be used multiple times, while the needle device 2 and the base device 5 are disposable consumables.
Referring to fig. 3 to 5, fig. 3 is an exploded view of a hidden pushing mechanism of a launching device in an embodiment of the indwelling subcutaneous infusion set of the present invention, fig. 4 is a sectional view of the hidden pushing mechanism of the launching device in the embodiment of the indwelling subcutaneous infusion set of the present invention, and fig. 5 is a structural view of a launching base in the embodiment of the indwelling subcutaneous infusion set of the present invention.
The launching device 1 comprises a launching seat 11, a triggering mechanism 12 connected to the launching seat 11 and an elastic ring piece 13 surrounding the periphery of the bottom of the launching seat 11. The elastic ring part 13 is provided with continuous wrinkles, two opposite ends of the elastic ring part 13 are provided with buckles, and the elastic ring part 13 can be contracted by pressing the elastic ring part 13 to change the distance between the two buckles, so that the elastic ring part and the base device 5 (shown in figure 1) can be detachably buckled.
The launching seat 11 has a second peripheral wall 111, a first placing space 110 is formed in the middle of the second peripheral wall 111, a first axial blocking wall 116 for blocking the first placing space 110 is arranged at a first axial end of the launching seat 11, a launching through hole 117 communicated with the first placing space 110 is arranged on the first axial blocking wall 116, three triggering protrusions 118 uniformly arranged on the periphery of the launching through hole 117 along the axial direction of the launching through hole 117 are arranged on the surface of the first axial blocking wall 116 facing the first placing space 110, and the starting protrusion 118 protrudes along the opposite direction of the first axial direction (namely, the negative direction of the z axis). The second axial end of the launching seat 11 has a launching inlet 119, and the launching inlet 119, the first placing space 110 and the launching through hole 117 are sequentially communicated in the first axial direction.
The periphery of the second peripheral wall 111 is provided with at least two sets of fourth axial stoppers 112 arranged along the circumferential direction of the second peripheral wall 111, the fourth axial stoppers 112 have a lead angle, each set of fourth axial stoppers 112 comprises two fourth axial stoppers 112 arranged along the axial direction, the two fourth axial stoppers 112 form a clamping channel 113, the fourth axial stoppers 112 have clamping concave positions 114 formed by being recessed along the opposite direction of the first axial direction, and the clamping concave positions 114 face the clamping channel 113.
The periphery of the second peripheral wall 111 is provided with a second circumferential limiting part 115, the second circumferential limiting part 115 is an elongated extension body extending along the axial direction, in the circumferential direction of the second peripheral wall 111, the second circumferential limiting part 115 is located between two fourth axial blocking parts 112, a gap 116 is formed between the fourth axial blocking parts 112 and the second circumferential limiting part 115, in the axial direction of the second peripheral wall 111, the gap 116 has a first crossing angle, and the first crossing angle of the gap 116 is larger than the second crossing angle of the third axial blocking part 441. Corresponding to the second circumferential stopper 115, the inner circumference of the second circumferential wall 111 forms guide grooves 118 extending in the first axial direction, and two guide grooves 118 are symmetrically arranged on both sides of the first placing space 110.
The trigger mechanism 12 includes a pressing member 120 and a second elastic member 15, the pressing member 120 includes a pressing arm portion 122 and a first axial blocking portion 123 connected to the pressing arm portion 122, the launching seat 11 has a communication port 117, a first extending end 121 of the pressing arm portion 122 is rotatably connected to the outside of the launching seat 11, and the first axial blocking portion 123 protrudes from the communication port 117 into the first placing space 110. The second elastic member 15 is a compression spring, and in a natural state, under the action of the second elastic member 15, the first axial blocking portion 123 is located in the locking position in the first placing space 110, with the axial blocking surface 123a on the first axial blocking portion 123 facing the launching inlet 119.
Referring to fig. 6 to 8, fig. 6 is a sectional view of a needle device in an embodiment of the indwelling subcutaneous infusion set of the present invention, fig. 7 is a structural view of a steel needle component and an indwelling needle component in an embodiment of the indwelling subcutaneous infusion set of the present invention, and fig. 8 is a sectional view of a launching tube in an embodiment of the indwelling subcutaneous infusion set of the present invention. The needle device 2 comprises a launching tube 21, a steel needle member 22, an indwelling needle member 23, a third elastic member 24 and a baffle 25; the launch canister 21 includes a third peripheral wall 216, a second placement space 210 is formed in the third peripheral wall 216, a mounting inlet 211 and an end opening 212 are formed at both axial ends of the third peripheral wall 216, respectively, the second placement space 210 communicates with the end opening 212 in a second axial direction (negative z-axis direction), and the baffle plate 25 blocks the mounting inlet 211.
The inner periphery of the third peripheral wall 216 at the end opening 212 is provided with three fifth axial stoppers 213, the fifth axial stoppers 213 are protrusions protruding from the inner periphery of the third peripheral wall 216 in the radial direction of the third peripheral wall 216 toward the axial center, and the fifth axial stoppers 213 are triangular at the end facing the second axial direction, and have guide slopes 231a and guide slopes 213b symmetrically arranged at the end. A rebound channel 217 is formed between two adjacent fifth axial stops 213.
The outer periphery of the third peripheral wall 216 is provided with a guide rib 214 extending in the axial direction, and a sixth axial stopper 215 protruding from one side of the guide rib 214 is formed, and the sixth axial stopper 215 has an axial stopper surface 215a facing the second axial direction and slightly inclined.
The steel needle member 22 comprises a fastener 221 and a steel needle body 222 fixed on the fastener 221, a seventh axial blocking portion 223 is arranged on the periphery of the fastener 221, the seventh axial blocking portion 223 is provided with a guide inclined surface 223a and a guide inclined surface 223b, the guide inclined surface 223a is obliquely arranged between the second axial direction and the circumferential direction of the steel needle member 22, and the guide inclined surface 223b is obliquely arranged between the opposite direction of the second axial direction and the circumferential direction of the steel needle member 22. The indwelling needle member 23 is a soft plastic, the indwelling needle member 23 includes a head 231 and an indwelling needle 232, and the middle of the indwelling needle member 23 is provided with a transfusion channel communicated between the head 231 and the indwelling needle 232.
Referring to fig. 9, fig. 9 is a first schematic diagram of the retraction of the steel needle member in the embodiment of the indwelling subcutaneous infusion set of the present invention. In the non-use state, the steel needle component 22 is inserted into the infusion channel and the head 231 is close to the fastener 221; the steel needle component 22 is installed in the second placing space 210, the fastener 221 is located at the end opening 212, the third elastic piece 24 is a compression spring, the third elastic piece 24 abuts between the steel needle component 22 and the launching tube 21 in a compressed state, the acting force direction of the third elastic piece 24 on the steel needle component 22 is opposite to the second axial direction, and the fifth axial blocking portion 213 limits and abuts against the seventh axial blocking portion 223 from the opposite direction of the second axial direction (z-axis negative direction).
Referring to fig. 11, fig. 11 is a cross-sectional view of the pushing mechanism in an embodiment of the indwelling subcutaneous infusion set of the present invention. The urging mechanism 4 includes a first housing 41, a pushing member 42, and a first elastic member 43. The first housing 41 has a first peripheral wall 44 and a top wall 411 connected to an axial end of the first peripheral wall 44, the first peripheral wall 44 is provided with an elastic arm 413 extending along the axial direction, an extending end of the elastic arm 413 is a free end, and an extending end of the elastic arm 413 is a second axial blocking portion 414 extending into an inner space of the first housing 41.
The pushing member 42 includes a fourth circumferential wall 422 and a pushing wall 421 connected to an axial end of the fourth circumferential wall 422, and a surface of the pushing wall 421 facing outward is a pushing surface 420. The first elastic member 43 is a compression spring, the first elastic member 43 abuts between the top wall 411 and the pushing wall 421, and the second axial blocking portion 414 limits the pushing member 42 from the first axial direction. The inner periphery of the first peripheral wall 44 is provided with at least two third axial stops 441 arranged along the circumferential direction of the first peripheral wall 44, the third axial stops 441 being distanced from the top wall 411 in the axial direction; the inner periphery of the first peripheral wall 44 is also provided with a strip-shaped first circumferential stopper 442 extending in the circumferential direction.
Referring to fig. 12 to 14, fig. 12 is an exploded view of a base device in an embodiment of the indwelling subcutaneous infusion set of the present invention, fig. 13 is a structural diagram of a first rotary swing part and a second rotary swing part in an embodiment of the indwelling subcutaneous infusion set of the present invention, and fig. 14 is a sectional view of the base device in a first state in an embodiment of the indwelling subcutaneous infusion set of the present invention. The base unit 5 comprises a base body 51, a first swinging member 52, a second swinging member 53 and a protective film 54 for protecting the adhesion effectiveness of the adhesive layer. The base body 51 is provided with a buckling surface side 51a and a sticking surface side 51b which are oppositely arranged, the sticking surface side 51b is provided with a second sticking surface 513, and the second sticking surface 513 is provided with a sticking layer; the holder body 51 is formed with a mounting recess 514 recessed from the second attaching surface 513 at the attaching side 51b, and the first swing portion 52 and the second swing portion 53 are both disposed in the mounting recess 514.
A clamping groove 512 (shown in fig. 1) is arranged on the fastening surface side 51a of the seat body 51, and the clamping groove 512 is formed by four elastic clamping claws 512 in a surrounding manner; the holder body 51 has a through hole 510 penetrating between the card slot 512 and the adhesive surface side 51b, a boss 515 is provided on the bottom surface of the mounting recess 514, and the through hole 510 communicates with the boss 515. The holder body 51 further includes a first clamping portion 516 protruding from the boss 515, and the first clamping portion 516 is located at one side of the axis of the insertion through hole 510.
The first swing part 52 comprises two first swing arm parts 521 and an adhesive panel 523, wherein the extending first ends of the two first swing arm parts 521 are provided with a first rotating shaft 522, the extending second ends of the two first swing arm parts 521 are fixedly connected with the adhesive panel 523, a first adhesive surface 523a is the surface of the adhesive panel 523, and an adhesive layer is arranged on the first adhesive surface 523 a; the attachment panel 523 is provided with a first abutting portion 524a, the attachment panel 523 is recessed at one end close to the first swing arm 521 to form an abutting recessed portion 524, and the first abutting portion 524a is an inner surface of the abutting recessed portion 524; when the first rotary swing member 52 is in the clamping position, the second abutting portion 534 abuts against an inner surface of the recess 524.
The second swing member 53 includes two second swing arm portions 531 and a cross bar 533, wherein the extending first ends of the two second swing arm portions 531 have second rotating shafts 532, the extending second ends of the two second swing arm portions 531 are respectively connected to the extending two ends of the cross bar 533, and the cross bar 533 is provided with a second clamping portion 535 and a second abutting portion 534. The second abutting portion 534 is an abutting projection projecting from the surface of the crossbar 533 away from the second swing arm portion 531 in the extending direction of the second swing arm portion 531, and the second clamping portion 535 is an end portion of the crossbar 533 close to the second rotation shaft 532.
The first rotating and swinging part 52 is rotatably connected with the base body 51 through the first rotating shaft 522, and the second rotating and swinging part 53 is connected with the base through the second rotating shaft 532; the first rotating shaft 522 and the second rotating shaft 532 are parallel to each other, the first rotating shaft 522 and the second rotating shaft 532 are located on the same side of the axis of the insertion through hole 510, the second rotating shaft 532 is close to the axis of the insertion through hole 510 relative to the first rotating shaft 522, the second rotating shaft 532 and the second clamping portion 535 are respectively located on two opposite sides of the axis of the insertion through hole 510, and the first clamping portion 516 and the second clamping portion 535 are respectively located on two opposite sides of the axis of the insertion through hole 510.
Referring to fig. 15, fig. 15 is a cross-sectional view of the base unit in a second state in an embodiment of the indwelling subcutaneous infusion set of the present invention. The first swing member 52 can be turned outward from the attaching position back toward the housing 51 to the holding position. When the first turning member 52 is located at the adhering position, the first adhering surface 523a is flush with the second adhering surface 513 or slightly protrudes from the second adhering surface 513 in parallel, and the first clamping portion 516 and the second clamping portion 535 have a first distance therebetween. The clamping position is a position where the first abutting portion 524a abuts against the second abutting portion 534, and a second distance is provided between the first clamping portion 516 and the second clamping portion 535, and the second distance is smaller than the first distance. When the base device 5 is in use, the first pasting surface 523a of the first swinging part 52 is pasted on the human body; when the base device 5 is torn from a human body, the first turning and swinging part 52 is turned outwards under the adhesive force, so that the distance between the first clamping part 516 and the second clamping part 535 is reduced to clamp the indwelling needle body 232, and the safe and stable needle pulling is completed.
Referring to fig. 16 and 9, fig. 16 is a cross-sectional view of a first state of the indwelling subcutaneous infusion set embodiment of the present invention. In the unused state the needle device 2 is detachably placed in the first placing space 110 and the pushing mechanism 4 is snapped onto the launching seat 11. The third axial blocking portion 441 of the first peripheral wall 44 of the pushing mechanism 4 is clamped in the clamping channel 113 between the two fourth axial blocking portions 112, and the third axial blocking portion 441 is clamped in the clamping concave portion 114 under the resilience force to prevent the pushing mechanism 4 from rotating, and meanwhile, the first circumferential limiting portion 442 and the second circumferential limiting portion 115 are in limiting fit in the circumferential direction, so that the pushing mechanism 4 is prevented from rotating forwards.
The pushing piece 42 abuts against the launching tube 21 along the first axial direction, the first axial stopping part 123 at the locking position limits and abuts against the sixth axial stopping part 215 from the first axial direction, and the first elastic piece 43 is in a compressed state; the guide rib 214 is positioned in the guide groove 118, and the steel needle 222 and the indwelling needle 232 pass through the launching through-hole 117 but do not pass through the insertion through-hole 510. At this time, the guide slope 223a faces the trigger protrusion 118 in the first axial direction.
Referring to fig. 4, 10 and 17, fig. 10 is a second principle view of the rebound of the steel needle member in the embodiment of the indwelling subcutaneous infusion set of the present invention. After the base device 5 is stuck on the body surface, the trigger mechanism 12 is pressed to make the first axial stopping portion 123 leave the locking position and disengage from the limit abutment with the sixth axial stopping portion 215, and after the first elastic member 43 releases the elastic potential energy, the needle device 2 is launched along the first axial direction.
Until the head 231 of the indwelling needle member 23 is clamped into the clamping groove 512, at this time, after the guide inclined surface 223a on the steel needle member 22 touches the trigger protrusion 118, the axial acting force is converted into a circumferential acting force and causes the steel needle member 22 to rotate, after the guide inclined surface 223b touches the guide inclined surface 213a, the steel needle member 22 continues to rotate, finally, the seventh axial blocking portion 223 is separated from the abutment with the fifth axial blocking portion 213, and is ejected from the rebound channel 217 to the first axial rebound under the elasticity of the third elastic part 24 and enters the deep part of the second placing space 210, and meanwhile, the steel needle body 222 is separated from the indwelling needle body 232, thereby completing the needle inserting work of the indwelling needle body.
The invention takes the original launching tube, the steel needle component, the remaining needle component and the like as disposable consumables, and the launching seat, the triggering mechanism and the detachable pushing mechanism as a new launching device for long-term use, and the disposable consumables have the simplest structure and the least material consumption, thereby reducing the resource waste as much as possible, reducing the production cost and conforming to the environmental protection concept.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the invention are possible to those skilled in the art, without departing from the spirit and scope of the invention.
Claims (10)
1. The emission device of the indwelling subcutaneous infusion set comprises an emission seat and a trigger mechanism connected to the emission seat;
a first placing space is formed in the middle of the launching seat, a first axial end of the launching seat is provided with a first axial blocking wall for blocking the first placing space, a launching through hole communicated with the first placing space is formed in the first axial blocking wall, a triggering protrusion is arranged on the surface of the first axial blocking wall facing the first placing space, and the triggering protrusion is positioned on the periphery of the launching through hole;
the trigger mechanism is provided with a first axial blocking part which can move to a locking position, and the locking position is positioned in the first placing space;
the method is characterized in that:
the second axial end of the launching seat is provided with a launching inlet, and the launching inlet, the first placing space and the launching through hole are sequentially communicated along the first axial direction;
the launching device further comprises a pushing mechanism, wherein the pushing mechanism comprises a first shell, a pushing piece and a first elastic piece;
the first elastic piece is connected between the first shell and the pushing piece, and the pushing piece is provided with a pushing surface which is opposite to the first elastic piece;
the first shell is detachably mounted on the launching seat, the pushing piece enters the first placing space from the inlet, and the pushing surface faces the launching through hole.
2. The transmitting device of claim 1, wherein:
and a second axial blocking part is arranged on the first shell and limits the pushing piece from the first axial direction.
3. The transmitting device of claim 2, wherein:
the first shell is provided with an elastic arm, the extending tail end of the elastic arm is a free end, and the second axial blocking portion is the extending tail end of the elastic arm.
4. The transmitting device of claim 1, wherein:
the first shell is provided with a first peripheral wall, and the inner periphery of the first peripheral wall is provided with at least two third axial blocking parts arranged along the circumferential direction of the first peripheral wall;
the launching seat is provided with a second peripheral wall, the periphery of the second peripheral wall is provided with at least two fourth axial blocking parts arranged along the circumferential direction of the second peripheral wall, a gap is formed between every two adjacent fourth axial blocking parts, and the first crossing angle of the gap is larger than the second crossing angle of the third axial blocking parts in the circumferential direction of the second peripheral wall;
the third axial stop limits the fourth axial stop from the first axial direction.
5. The reflective device of claim 4, wherein:
the inner periphery of the first peripheral wall is provided with a first circumferential limiting part, the outer periphery of the second peripheral wall is provided with a second circumferential limiting part, and the first circumferential limiting part and the second circumferential limiting part are in limiting fit in the circumferential direction of the first peripheral wall.
6. The transmitting device of claim 4, wherein:
the fourth axial blocking part is provided with a clamping concave position formed by sinking along the opposite direction of the first axial direction, and the third axial blocking part is positioned in the clamping concave position.
7. The transmitting device of claim 1, wherein:
the trigger mechanism comprises a pressing piece, and the pressing piece comprises a pressing arm part and the first axial blocking part connected to the pressing arm part;
the launching seat is provided with a communication port, the first extending end of the pressing arm part is rotatably connected outside the launching seat, and the first axial blocking part extends into the first placing space from the communication port.
8. The transmitting device of claim 7, wherein:
the trigger mechanism further includes a second elastic member disposed between the second extending end of the pressing arm portion and the launching seat.
9. An indwelling subcutaneous infusion set is characterized in that:
the indwelling subcutaneous infusion set comprises an emitting device and a needle body device;
the transmitting device adopts the transmitting device of any one of the above claims 1 to 8;
the needle body device comprises a launching tube, a steel needle component, an indwelling needle component and a third elastic component;
the launching tube comprises a third circumferential wall, a second placing space is formed in the third circumferential wall, an end opening is formed at the axial end of the third circumferential wall, the second placing space is communicated with the end opening along the second axial direction, a fifth axial blocking part is arranged on the inner periphery of the end opening of the third circumferential wall, and a sixth axial blocking part is arranged on the outer periphery of the third circumferential wall;
a seventh axial blocking part is arranged on the periphery of the steel needle component and provided with a guide inclined plane, and the guide inclined plane is obliquely arranged between the axial direction of the steel needle component and the circumferential direction of the steel needle component;
the middle part of the indwelling needle component is provided with a transfusion channel, and the steel needle component is inserted into the transfusion channel;
the steel needle component is positioned at the end opening, the third elastic piece is connected between the steel needle component and the launching tube and is in an energy storage state, the acting force direction of the third elastic piece on the steel needle component is opposite to the second axial direction, and the fifth axial blocking part is in limit abutting joint with the seventh axial blocking part from the opposite direction of the second axial direction;
the needle body device is detachably placed in the first placing space, the pushing piece abuts against the launching tube along the first axial direction, the first axial blocking part located at the locking position limits the sixth axial blocking part from the first axial direction, the steel needle component and the remaining needle component penetrate out of the launching through hole, and the guide inclined plane faces the trigger bulge in the first axial direction.
10. An indwelling subcutaneous infusion set comprises an emitting device and a base device which are detachably connected;
the method is characterized in that:
the transmitting device adopts the transmitting device of any one of the above claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910949114.3A CN110585512A (en) | 2019-10-08 | 2019-10-08 | Emitter of retention type subcutaneous infusion apparatus and retention type subcutaneous infusion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910949114.3A CN110585512A (en) | 2019-10-08 | 2019-10-08 | Emitter of retention type subcutaneous infusion apparatus and retention type subcutaneous infusion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110585512A true CN110585512A (en) | 2019-12-20 |
Family
ID=68865649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910949114.3A Withdrawn CN110585512A (en) | 2019-10-08 | 2019-10-08 | Emitter of retention type subcutaneous infusion apparatus and retention type subcutaneous infusion apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110585512A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022061714A1 (en) * | 2020-09-25 | 2022-03-31 | 群康生技股份有限公司 | Needle output mechanism |
| CN116726307A (en) * | 2023-05-17 | 2023-09-12 | 普林斯顿医疗科技（珠海）有限公司 | Remaining needle device |
-
2019
- 2019-10-08 CN CN201910949114.3A patent/CN110585512A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022061714A1 (en) * | 2020-09-25 | 2022-03-31 | 群康生技股份有限公司 | Needle output mechanism |
| CN116726307A (en) * | 2023-05-17 | 2023-09-12 | 普林斯顿医疗科技（珠海）有限公司 | Remaining needle device |
| CN116726307B (en) * | 2023-05-17 | 2023-12-05 | 普林斯顿医疗科技（珠海）有限公司 | Remaining needle device |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191220 |