CN112450926A - Needle protection structure, protection method and needle device - Google Patents
Needle protection structure, protection method and needle device Download PDFInfo
- Publication number
- CN112450926A CN112450926A CN202011464717.3A CN202011464717A CN112450926A CN 112450926 A CN112450926 A CN 112450926A CN 202011464717 A CN202011464717 A CN 202011464717A CN 112450926 A CN112450926 A CN 112450926A
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- Prior art keywords
- needle
- seat
- tube
- cover plate
- protection
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims abstract description 28
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 238000004146 energy storage Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 244000241796 Christia obcordata Species 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 claims description 2
- 206010011409 Cross infection Diseases 0.000 abstract description 7
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract description 7
- 208000027418 Wounds and injury Diseases 0.000 abstract description 5
- 208000014674 injury Diseases 0.000 abstract description 5
- 206010052428 Wound Diseases 0.000 description 2
- 206010069803 Injury associated with device Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150572—Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150633—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
-
- 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
- A61M5/178—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
- A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards
Abstract
The invention relates to the field of medical instruments, and particularly discloses a needle protection structure, a needle protection method and a needle device. The needle protection structure comprises a needle seat, a needle tube, a protection seat and a limiting belt made of flexible materials, wherein one end of the limiting belt is connected with the needle seat, and the other end of the limiting belt is connected with the protection seat; still include the lock needle subassembly, the lock needle subassembly include the torsional spring, the spring coil and the pinhole alignment setting of torsional spring. The needle seat has at least the following two position states relative to the protective seat: in the first position state, the needle threading channel is aligned with the needle hole, the needle tube penetrates through the spring ring, the needle hole and the needle threading channel, and the limiting belt is in a loose state; in the second position, the needle tube is withdrawn from the needle threading channel, the needle threading channel is staggered with the needle hole, and the limiting belt is in a tightening state. The needle protection structure can be used for accommodating the sharp-pricked part of the needle tube after the needle is used, so that the sharp-pricked end of the needle tube is prevented from being exposed to the outside, secondary injury and cross infection are avoided, and a patient and medical staff are protected.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a needle protection structure, a needle protection method and a needle device.
Background
Various needle devices are the most common disposable consumables used in medical institutions and the most common needle devices are used, and after the traditional needle devices are used, the needle heads are usually exposed outside, so that accidental needle stick injuries and environmental pollution are easily caused. The puncture wound and the cross infection caused by the puncture wound are safety and health problems which afflict medical staff for a long time, and the puncture tip of the contaminated needle tube is exposed outside after the use, so that the secondary injury and the cross infection are easily caused. There is therefore a need to design a needle device that is more safe and minimizes the risk of secondary injury and cross-infection.
Disclosure of Invention
The invention aims to provide a needle protection structure, a needle protection method and a needle device, wherein after a needle is used, a sharp-pointed part of a needle tube is accommodated, so that secondary injury and cross infection caused by the fact that a sharp-pointed end of the needle tube is exposed outside are avoided, and a patient and medical staff are protected.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the needle protection structure comprises a needle seat, a needle tube and a protection seat, wherein the needle tube is connected with the needle seat; the protective seat is provided with a needle hole and is rotatably and movably connected with a cover plate, and the cover plate is provided with a needle threading channel;
the needle holder is characterized by also comprising a limiting belt made of flexible materials, wherein one end of the limiting belt is connected with the needle holder, and the other end of the limiting belt is connected with the protection seat;
the needle locking mechanism further comprises a needle locking assembly, wherein the needle locking assembly comprises a torsion spring, and a spring coil of the torsion spring is aligned with the needle hole; the first torsion arm of the torsion spring corresponds to the protective seat, and the second torsion arm corresponds to the cover plate;
the needle seat has at least the following two position states relative to the protective seat:
in the first position state, the needle threading channel is aligned with the needle hole, at the moment, the torsion spring is in a relaxation energy storage state, the needle tube penetrates through the spring coil, the needle hole and the needle threading channel, and the limiting belt is in a loose state;
in the second position state, the needle tube is withdrawn from the needle threading channel, the needle threading channel is staggered with the needle hole, and the spring coil of the torsion spring prevents the needle tube from being withdrawn from the spring coil; at the moment, the limiting belt is in a tightening state.
When the needle is used, the needle seat is located at a first position state relative to the protection seat, the needle penetrating channel is aligned with the needle hole, the sharp-pointed end of the needle tube extends out of the needle penetrating channel, and the torsion spring is in a relaxation energy storage state; and the needle tube is contacted with the cover plate to prevent the cover plate from rotating relative to the protective seat. After the needle is used, the needle seat is pushed to move relative to the protective seat until the sharp piercing end of the needle tube is withdrawn from the needle penetrating channel. At the moment, the elasticity of the torsion spring drives the cover plate to rotate until the needle threading channel is staggered with the needle tube and enters a second position state. The cover plate prevents the sharp prick end of the needle tube from extending out again, simultaneously the inner diameter of the spring coil is reduced, the limiting belt is tightened, the needle tube is prevented from withdrawing from the spring coil, and the sharp prick end of the needle tube is limited in the protective seat.
Adopt above-mentioned needle protection architecture, can use the completion after the needle, accomodate the point thorn portion of needle tubing, avoid the needle tube point thorn end to expose outside, cause secondary damage and cross infection, protection patient and medical personnel.
Preferably, in the first position, the needle cannula is spaced from the spring coil such that the needle cannula is axially movable relative to the spring coil. In the second position, the spring coil clasps the needle cannula and prevents the needle cannula from continuing to move relative to the spring coil.
Preferably, the sharp thorn end of the needle tube is bent.
The needle tube can move relative to the spring coil in the first position state, but the clearance between the spring coil and the needle tube is smaller, and the inner diameter of the spring coil can be further reduced after the needle tube enters the second position state, so that the needle tube can still axially move relative to the spring coil even in the second position state, and the needle tube cannot withdraw from the spring coil under the obstruction of the bent sharp-pointed end, thereby achieving the purpose of preventing the needle tube from withdrawing from the spring coil.
Preferably, the cover plate is provided with a slot, the second torsion arm is partially or completely inserted into the slot, and the slot is in a long strip shape.
The slot is used with the cooperation of second torque arm, promotes the apron and rotates for the protection seat. The slot is rectangular form, and the second torque arm can leave enough space for the installation of torsional spring in the relative motion of the length within range of slot, and is lower to the size precision requirement of torsional spring and slot.
Meanwhile, the spring coil is aligned with the needle threading channel in the first position state, and is staggered with the needle threading channel in the second position state, so that the central line of the spring coil is not coincident with the rotation central line of the cover plate. The slot is in an elongated shape, and the second torsion arm is arranged to be converted between the first position state and the second position state to leave enough movement space.
Preferably, the device also comprises a pre-tightening assembly arranged between the needle seat and the protective seat, wherein the pre-tightening assembly comprises an elastic lug arranged on the protective seat/the needle seat and a pressing groove arranged on the needle seat/the protective seat, and the elastic lug is inserted into the pressing groove in the first position state.
The pre-tightening component is matched and connected in the first position state, so that the needle seat can be prevented from moving relative to the protective seat in the normal use state of the needle.
Preferably, two sides of the needle seat are respectively provided with a butterfly wing.
The cooperation of bellying and storage tank combines the cooperation of elasticity lug and compressing tightly the groove, can fix a position the needle file for the circumference position of protection seat, prevents the installation dislocation.
Preferably, the two sides of the needle seat are respectively provided with a handheld part, so that the operation is convenient.
Preferably, the protective seat comprises a shell and a bottom plate, and the shell and the bottom plate are connected and enclose a mounting cavity; the shell and the bottom plate are tightly pressed on the corresponding end parts of the limiting belts, and the limiting belts are simple and convenient to install.
Preferably, a base is arranged in the mounting cavity, the torsion spring is arranged on the base, and the cover plate is rotatably and movably connected with the base; the bottom plate is provided with a through hole matched with the cover plate, and the cover plate is arranged in the through hole.
A needle protection method using the needle protection structure as described above;
when the needle is used, the needle seat is located at a first position state relative to the protective seat, the needle penetrating channel is aligned with the needle hole, and the torsion spring is in a relaxation energy storage state; the sharp-pointed end of the needle tube extends out of the needle threading channel, and the needle tube is contacted with the cover plate to prevent the cover plate from rotating relative to the protective seat;
after the needle tube is used, the needle seat moves relative to the protective seat until the sharp piercing end of the needle tube exits from the needle penetrating channel; at the moment, the cover plate rotates under the action of the elasticity of the torsion spring until the needle threading channel is staggered with the needle tube, the sharp end of the needle tube is prevented from extending out again, the inner diameter of the spring coil is reduced, the limiting belt is tightened, and the needle tube is prevented from retreating from the spring coil.
A needle device comprising a needle protection arrangement as described above.
Drawings
FIG. 1 is a schematic structural view of the needle protection structure of the present embodiment in a first position;
FIG. 2 is a bottom view of the needle guard structure of this embodiment in a first position;
FIG. 3 is an exploded view of the needle protection structure of the present embodiment;
FIG. 4 is a schematic structural view of the needle protection structure of the present embodiment with the housing removed in the first position;
FIG. 5 is a side view of the needle guard structure of this embodiment in partial cross-section in a first position;
FIG. 6 is an enlarged view taken at A in FIG. 5;
FIG. 7 is a schematic structural view of the needle protection structure of the present embodiment in a second position;
FIG. 8 is a bottom view of the needle guard structure of this embodiment in a second position;
FIG. 9 is a schematic structural view of the needle protection structure of the present embodiment with the housing removed in the second position;
FIG. 10 is a schematic view of the needle tube, the torsion spring and the cover plate of the needle protection structure of the present embodiment in the second position.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
As shown in fig. 1-3, the needle protection structure comprises a needle base 1, a needle tube 3 and a protection base 2, wherein the needle tube 3 is connected with the needle base 1. The two sides of the needle seat 1 are respectively provided with a butterfly wing 12, which is convenient for operation. The protection seat 2 is provided with a needle hole and is rotatably and movably connected with a cover plate 4, and the cover plate 4 is provided with a needle threading channel 42. Protection seat 2 include casing 25 and bottom plate 21, casing 25 and bottom plate 21 enclose synthetic installation cavity 23, installation cavity 23 in be equipped with base 22, torsional spring 5 set up on base 22, apron 4 and the rotatory swing joint of base 22. The bottom plate 21 is provided with a through hole 26 matched with the cover plate 4, and the cover plate 4 is arranged in the through hole 26.
As shown in fig. 3, 4, 9 and 10, the needle locking device further comprises a needle locking assembly, wherein the needle locking assembly comprises a torsion spring 5, and a coil 52 of the torsion spring 5 is aligned with the needle hole. The first torsion arm 51 of the torsion spring 5 corresponds to the protection seat 2, and the second torsion arm 53 corresponds to the cover plate 4.
As shown in fig. 3, 6, 7, 8 and 9, the utility model also comprises a spacing belt 6 made of flexible material, and the spacing belt 6 is at least partially arranged in the installation cavity 23. One end of the limiting belt 6 is connected with the needle seat, and the other end of the limiting belt is connected with the protection seat. As shown in fig. 3, 7 and 8, the spacing belt 6 and the needle seat may be integrally formed or welded, and as shown in fig. 5 and 6, one end of the spacing belt 6 corresponding to the protection seat is clamped by the housing and the bottom plate.
As shown in fig. 3, the device further comprises a pre-tightening assembly arranged between the needle seat 1 and the protection seat 2, wherein the pre-tightening assembly comprises an elastic lug 11 and a pressing groove 24. In the first position, the elastic projection 11 is inserted into the pressing groove 24.
The needle seat 1 has at least the following two position states relative to the protective seat 2:
as shown in fig. 1 and 2, in the first position, the needle threading channel 42 is aligned with the needle hole, at this time, the torsion spring 5 is in the relaxation energy storage state, the needle tube 3 passes through the spring coil 52, the needle hole and the needle threading channel 42, the limit belt 6 is in the loose state, and the pre-tightening component between the needle seat 1 and the protection seat 2 is in fit connection.
In the second position, as shown in fig. 7 and 8, the needle cannula 3 is withdrawn from the needle-threading channel 42, said needle-threading channel 42 being offset from the needle hole. Meanwhile, the spring coil 52 of the torsion spring 5 prevents the needle tube 3 from retreating from the spring coil 52, and at the moment, the spacing belt 6 is in a tense state.
Specific embodiments of the coil 52 that prevent withdrawal of the needle cannula 3 may include the following two:
the first mode is as follows: in the first position, a gap is left between the needle tube 3 and the spring coil 52, and the needle tube 3 can axially move relative to the spring coil 52. In the second position, the spring coil 52 embraces the needle tube 3, and the spacing belt 6 is in a tightening state, so that the needle tube 3 is prevented from moving relative to the spring coil 52. Fig. 10 is a schematic diagram of the first mode.
The second way is: the sharp thorn end of the needle tube 3 is bent. The needle tube 3 can move relative to the spring coil 52 in the first position state, but because the clearance between the spring coil 52 and the needle tube 3 is smaller, and the inner diameter of the spring coil 52 is further reduced after the needle tube 3 enters the second position state, even if the needle tube 3 can still axially move relative to the spring coil 52 in the second position state, the needle tube 3 can not be withdrawn from the spring coil 52 under the obstruction of the bent sharp pointed end, and meanwhile, the spacing belt 6 is in a tense state, and the purpose of preventing the needle tube 3 from withdrawing from the spring coil 52 is achieved together.
Adopt above-mentioned needle protection architecture, can use the completion at the needle after, accomodate the spine portion of needle tubing 3, avoid 3 spine ends of needle tubing to expose outside, cause secondary damage and cross infection, protection patient and medical personnel. The pre-tightening component is matched and connected in the first position state, so that the needle base 1 can be prevented from moving relative to the protective base 2 in the normal use state of the needle.
A needle protection method using the needle protection structure as described above;
when the needle is used, the needle base 1 is located at a first position state relative to the protective base 2, the needle penetrating channel 42 is aligned with a needle hole, and the torsion spring 5 is in a relaxation energy storage state; the sharp-pointed end of the needle tube 3 extends out of the needle penetrating channel 42, and the needle tube 3 is contacted with the cover plate 4 to prevent the cover plate 4 from rotating relative to the protective seat 2; in the process of using the needle, the pre-tightening components are connected in a matching way, so that the needle base 1 is prevented from moving relative to the protective base 2 in the normal using state of the needle.
After use, the needle base 1 moves relative to the protective base 2 until the sharp end of the needle tube 3 is withdrawn from the needle penetrating channel 42; at this time, the cover plate 4 rotates under the elastic force of the torsion spring 5 until the needle threading channel 42 is dislocated with the needle tube 3, so as to prevent the sharp piercing end of the needle tube 3 from extending out again, simultaneously, the inner diameter of the spring coil 52 is reduced, and the spacing belt 6 is tightened, so as to prevent the needle tube 3 from withdrawing from the spring coil 52.
A needle device comprising a needle protection arrangement as described above.
In conclusion, the above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Needle protection architecture, its characterized in that: the needle tube is connected with the needle seat; the protective seat is provided with a needle hole and is rotatably and movably connected with a cover plate, and the cover plate is provided with a needle threading channel;
the needle holder is characterized by also comprising a limiting belt made of flexible materials, wherein one end of the limiting belt is connected with the needle holder, and the other end of the limiting belt is connected with the protection seat;
the needle locking mechanism further comprises a needle locking assembly, wherein the needle locking assembly comprises a torsion spring, and a spring coil of the torsion spring is aligned with the needle hole; the first torsion arm of the torsion spring corresponds to the protective seat, and the second torsion arm corresponds to the cover plate;
the needle seat has at least the following two position states relative to the protective seat:
in the first position state, the needle threading channel is aligned with the needle hole, at the moment, the torsion spring is in a relaxation energy storage state, the needle tube penetrates through the spring coil, the needle hole and the needle threading channel, and the limiting belt is in a loose state;
in the second position state, the needle tube is withdrawn from the needle threading channel, the needle threading channel is staggered with the needle hole, and the spring coil of the torsion spring prevents the needle tube from being withdrawn from the spring coil; at the moment, the limiting belt is in a tightening state.
2. The needle protection structure according to claim 1, wherein: in the first position state, a gap is reserved between the needle tube and the spring coil; in the second position, the spring coil clasps the needle tube.
3. The needle protection structure according to claim 1, wherein: the sharp thorn end of the needle tube is bent.
4. The needle protection structure according to claim 1, wherein: the cover plate is provided with a slot, the second torque arm is partially or completely inserted into the slot, and the slot is in a long strip shape.
5. The needle protection structure according to claim 1, wherein: the pre-tightening assembly comprises an elastic lug arranged on the protection seat/needle seat and a pressing groove arranged on the needle seat/protection seat, and the elastic lug is inserted into the pressing groove in the first position state.
6. The needle protection structure according to claim 1, wherein: two sides of the needle seat are respectively provided with a butterfly wing.
7. The needle protection structure according to any one of claims 1 to 6, wherein: the protective seat comprises a shell and a bottom plate, and the shell and the bottom plate are connected and enclose to form an installation cavity; the shell and the bottom plate compress the corresponding end part of the limit belt.
8. The needle protection structure according to claim 7, wherein: the installation cavity is internally provided with a base, the torsion spring is arranged on the base, and the cover plate is rotatably and movably connected with the base; the bottom plate is provided with a through hole matched with the cover plate, and the cover plate is arranged in the through hole.
9. A needle protection method characterized by: using the needle protection structure of any one of claims 1-8;
when the needle is used, the needle seat is located at a first position state relative to the protective seat, the needle penetrating channel is aligned with the needle hole, and the torsion spring is in a relaxation energy storage state; the sharp-pointed end of the needle tube extends out of the needle threading channel, and the needle tube is contacted with the cover plate to prevent the cover plate from rotating relative to the protective seat;
after the needle tube is used, the needle seat moves relative to the protective seat until the sharp piercing end of the needle tube exits from the needle penetrating channel; at the moment, the cover plate rotates under the action of the elasticity of the torsion spring until the needle threading channel is staggered with the needle tube, and the sharp piercing end of the needle tube is prevented from extending out again; meanwhile, the inner diameter of the spring coil is reduced, and the limiting belt is tightened to prevent the needle tube from withdrawing from the spring coil.
10. A needle device characterized by: comprising a needle protection structure according to any one of claims 1-8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464717.3A CN112450926B (en) | 2020-12-14 | 2020-12-14 | Needle protection structure, protection method and needle device |
| PCT/CN2021/122581 WO2022078237A1 (en) | 2020-10-12 | 2021-10-08 | Needle protection structure and protection method, and needle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011464717.3A CN112450926B (en) | 2020-12-14 | 2020-12-14 | Needle protection structure, protection method and needle device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112450926A true CN112450926A (en) | 2021-03-09 |
| CN112450926B CN112450926B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011464717.3A Active CN112450926B (en) | 2020-10-12 | 2020-12-14 | Needle protection structure, protection method and needle device |
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| Country | Link |
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| CN (1) | CN112450926B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022078237A1 (en) * | 2020-10-12 | 2022-04-21 | 普昂(杭州)医疗科技股份有限公司 | Needle protection structure and protection method, and needle device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022078237A1 (en) * | 2020-10-12 | 2022-04-21 | 普昂(杭州)医疗科技股份有限公司 | Needle protection structure and protection method, and needle device |
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| Publication number | Publication date |
|---|---|
| CN112450926B (en) | 2024-02-23 |
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