CN113082390B - Concealed self-destroying needle - Google Patents
Concealed self-destroying needle Download PDFInfo
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- CN113082390B CN113082390B CN202110330820.7A CN202110330820A CN113082390B CN 113082390 B CN113082390 B CN 113082390B CN 202110330820 A CN202110330820 A CN 202110330820A CN 113082390 B CN113082390 B CN 113082390B
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- Prior art keywords
- needle
- protective cap
- cap
- guide sleeve
- tooth
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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
- 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
- A61M5/3278—Apparatus for destroying used needles or syringes
Abstract
The invention relates to the technical field of injection needles, in particular to a hidden self-destroying needle, which comprises an injection needle and a needle hiding device, wherein the needle hiding device comprises a needle hiding cap, a protective cap, a guide sleeve and an elastic element, a clamping groove group is arranged on the guide sleeve, the clamping groove group comprises a guide groove and a locking groove, the inner ends of the guide groove and the locking groove are mutually communicated, a tooth column is arranged on the protective cap, and the tooth column is positioned in the guide groove; the first inclined plane matching structure and the second inclined plane matching structure are both used for enabling the protective cap to rotate along the same direction while axially displacing, the locking groove is used for blocking tooth columns in the protective cap, so that the protective cap cannot axially displace inwards.
Description
Technical Field
The invention relates to the technical field of injection needles, in particular to a hidden self-destroying needle.
Background
At present, the injection needle is usually protected by a needle sleeve so as to prevent accidental stabs of workers and damage of the injection needle caused by collision, and the injection needle mainly has the following defects:
1) In the injection process, the injection needle is directly exposed to the outside, so that fear of a patient is easily caused, psychological pressure is caused, smooth injection is not facilitated, and especially when children are injected, the fear of the children is common;
2) After the injection is finished, an operator often does not sleeve the needle sleeve on the injection needle again, and the injection needle is directly exposed to the outside, so that the possibility of stabbing related personnel is caused, and cross infection is caused;
3) After the injection is finished, the injection needle cannot be self-destroyed, and the injection needle can be reused, so that the disease is easy to spread.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the defects in the prior art, a hidden self-destroying needle is provided.
The technical scheme adopted for solving the technical problems is as follows: the hidden self-destroying needle comprises an injection needle and a hidden needle device, wherein the hidden needle device comprises a hidden needle cap, a protective cap, a guide sleeve and an elastic element, the guide sleeve is fixed on the injection needle, the protective cap is movably arranged on the guide sleeve, the hidden needle cap is slidably arranged on the protective cap, and one end of the injection needle is positioned in the protective cap; the guide sleeve is provided with a clamping groove group, the clamping groove group comprises a guide groove and a locking groove, the inner ends of the guide groove and the locking groove are mutually communicated, a separation part is formed between the guide groove and the locking groove, the protective cap is provided with a tooth column, and the tooth column is positioned in the guide groove;
the outer end of the tooth post forms a first inclined plane matching structure when contacting with the inner end of the hidden needle cap, the outer end of the tooth post forms a second inclined plane matching structure when contacting with the inner end of the separation part, the first inclined plane matching structure and the second inclined plane matching structure are both used for enabling the protective cap to rotate along the same direction when axially displacing, the elastic element is used for enabling the protective cap to axially displace outwards after axially displacing inwards, and the locking groove is used for blocking the tooth post therein, so that the protective cap cannot axially displace inwards.
When utilizing the hidden needle cap to produce inward axial displacement in this scheme, first inclined plane cooperation structure can make the tooth post of protection cap deflect to the inner with the partition portion by the inner of guide way, form second inclined plane cooperation structure, elastic element promotes protection cap axial reset this moment, the tooth post deflects under the effect of second inclined plane cooperation structure and gets into the locking groove, the tooth post reaches the locking groove at last, and be blocked by the locking groove, avoid the protection cap to produce the inward axial displacement of secondary, thereby make the syringe needle automatic self-destruction after using once, need not deliberate operation and go to destroy.
Further, the outer end part of the tooth column is provided with a first inclined plane, a plurality of second inclined planes matched with the first inclined planes are distributed at intervals at the inner end of the needle hiding cap, and a first inclined plane matching structure is formed when the first inclined planes and the second inclined planes are contacted with each other; through the mutual matching of the first inclined plane and the second inclined plane, the component force for rotating the protective cap can be further existed when the protective cap is axially displaced, and further the protective cap is axially displaced and simultaneously rotated.
Further, the inner end of the separation part is provided with a third inclined plane matched with the first inclined plane, and a second inclined plane matching structure is formed when the third inclined plane and the first inclined plane are contacted with each other; the first inclined plane and the third inclined plane are matched with each other to realize that a component force for rotating the protective cap exists when the protective cap axially displaces, so that the protective cap rotates while axially displaces.
Further, the locking groove is internally provided with a step surface for blocking the tooth column, and the step surfaces in the same clamping groove group are positioned at one side, far away from the guide groove, of the locking groove; in the process that the elastic element pushes the protective cap to axially reset, after the tooth column reaches the locking groove, the tooth column can be contacted with the inner end of the hidden needle cap again to form a first inclined plane matching structure, the tooth column axially moves outwards in the locking groove and rotates towards the side where the step surface is located until the inner end of the tooth column is opposite to the step surface, so that the inner axial displacement of the tooth column is blocked through the step surface, and the protective cap is prevented from generating a second inward axial displacement.
Further, the clamping groove groups are provided with a plurality of tooth columns which are distributed on the guide sleeve at intervals along the circumferential direction of the guide sleeve, the tooth columns are provided with a plurality of tooth columns which are distributed on the protective cap at intervals along the circumferential direction of the protective cap, the tooth columns are in one-to-one correspondence with the guide sleeve, and the tooth columns are positioned in the guide grooves of the corresponding clamping groove groups; by utilizing the design of a plurality of tooth columns and a plurality of clamping groove groups, a plurality of tooth columns can drive the protective cap to rotate simultaneously, so that the stability during rotation is ensured, and the protective cap is prevented from being blocked due to unbalanced stress during rotation.
Further, an axial limiting structure for preventing the hidden needle cap from being separated from the guide sleeve is arranged between the hidden needle cap and the guide sleeve.
Further, a sliding block protrudes out of the needle hiding cap, and the sliding block is arranged in a guide groove of the clamping groove group in a sliding manner; thereby realizing the sliding installation of the hidden needle cap on the guide sleeve and improving the compactness of the structure; meanwhile, when the sliding block is contacted with the end part of the outer end of the guide groove, the hidden needle cap can be prevented from being separated from the guide sleeve outwards, so that an axial limiting structure is formed.
In order to facilitate manufacturing and assembly, further, the guide sleeve is sleeved outside the hidden needle cap, the outer end of the protective cap is inserted into the hidden needle cap, the inner end of the protective cap is inserted into the guide sleeve, the clamping groove group is positioned on the inner ring wall of the guide sleeve, and the tooth column is arranged at the inner end of the outer peripheral surface of the protective cap.
Further, the injection needle comprises a needle seat and a needle tube fixed in the needle seat, one end of the elastic element is propped against the protective cap, and the other end is propped against the needle seat.
Further, the elastic element is a spring.
Further, the number of the needle hiding devices is two, and the two needle hiding devices are respectively positioned at two ends of the injection needle.
Further, the needle hiding device also comprises a shell, and the guide sleeves and the injection needles in the two needle hiding devices are fixed in the shell.
The beneficial effects of the invention are as follows: the hidden self-destroying needle can shield the injection needle, realize the hiding function of the injection needle, simultaneously can lock and hide the injection needle again after being used once, avoid repeated use, realize self-destroying, do not need to artificially provide additional destroying action, have convenient operation, greatly improve the safety performance and have good market prospect.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is an exploded view of the hidden self-destructing needle of the present invention;
FIG. 2 is a schematic cross-sectional view of a hidden self-destructing needle in accordance with the present disclosure;
FIG. 3 is a three-dimensional schematic view of a hidden needle cap in a hidden self-destructing needle of the present invention;
FIG. 4 is a three-dimensional schematic view of a protective cap in a concealed self-destructing needle in accordance with the present disclosure;
FIG. 5 is a schematic three-dimensional cross-sectional view of a guide sleeve in a concealed self-destructing needle in accordance with the present disclosure;
FIG. 6 is a schematic cross-sectional view of a guide sleeve in a concealed self-destructing needle in accordance with the present disclosure;
FIG. 7 is a schematic bottom view of the guide sleeve of the concealed self-destructing needle of the present disclosure;
FIG. 8 is a schematic diagram showing the cooperation of the slider and the guide groove before the hidden self-destroying needle of the present invention is used;
FIG. 9 is a schematic view of the hidden self-destructing needle of the present invention with the slider moved to the inner end of the guide slot;
FIG. 10 is a schematic view of the cooperation of the slider and the partition during the resetting of the protective cap after injection of the hidden self-destructing needle of the present invention;
FIG. 11 is a schematic view of the hidden self-destructing needle of the present invention after injection when the slider is locked by the locking groove.
In the figure: 1. an injection needle head, 11, a needle seat, 12 and a needle tube;
2. the hidden needle device comprises a hidden needle device body 21, a hidden needle cap body 21a, a second inclined plane, a 21b, a sliding block, a 22, a protective cap body 22a, a tooth column, a 22a1, a first inclined plane, a 23, a guide sleeve, a 231, a clamping groove group, a 231a, a guide groove, a 231b, a separation part, a 231b1, a third inclined plane, a 231c, a locking groove, a 231c1, a step surface, a 24 and an elastic element;
3. a housing.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only those features which are relevant to the invention, and orientation and reference (e.g., up, down, left, right, etc.) may be used solely to aid in the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
Example 1
As shown in fig. 1-11, a hidden self-destruction needle comprises an injection needle 1 and a hidden needle device 2, wherein the hidden needle device 2 comprises a hidden needle cap 21, a protective cap 22, a guide sleeve 23 and an elastic element 24, the guide sleeve 23 is fixed on the injection needle 1, the protective cap 22 is movably arranged on the guide sleeve 23, the hidden needle cap 21 is slidably arranged on the protective cap 22, and one end of the injection needle 1 is positioned in the protective cap 22; the guide sleeve 23 is provided with a clamping groove set 231, the clamping groove set 231 comprises a guide groove 231a and a locking groove 231c, the inner ends of the guide groove 231a and the locking groove 231c are communicated with each other, a separation part 231b is formed between the guide groove 231a and the locking groove 231c, the protective cap 22 is provided with a tooth column 22a, and the tooth column 22a is positioned in the guide groove 231 a;
the outer end of the tooth post 22a forms a first inclined plane matching structure when contacting with the inner end of the hidden needle cap 21, the outer end of the tooth post 22a forms a second inclined plane matching structure when contacting with the inner end of the partition 231b, the first inclined plane matching structure and the second inclined plane matching structure are both used for enabling the protective cap 22 to rotate along the same direction while axially displacing, the elastic element 24 is used for enabling the protective cap 22 to axially displace inwards and then axially outwards, and the locking groove 231c is used for blocking the tooth post 22a therein, so that the protective cap 22 cannot axially displace inwards.
The outer end part of the tooth column 22a is provided with a first inclined plane 22a1, the inner end of the needle hiding cap 21 is provided with a plurality of second inclined planes 21a which are matched with the first inclined plane 22a1 at intervals, and the first inclined plane 22a1 and the second inclined plane 21a form a first inclined plane matching structure when mutually contacting; by the mutual matching of the first inclined surface 22a1 and the second inclined surface 21a, a component force for rotating the protective cap 22 exists when the protective cap 22 axially displaces, and the protective cap 22 rotates when axially displaces.
The inner end of the partition 231b has a third inclined surface 231b1 matched with the first inclined surface 22a1, and the third inclined surface 231b1 and the first inclined surface 22a1 form a second inclined surface matching structure when contacting each other; by the mutual matching of the first inclined surface 22a1 and the third inclined surface 231b1, when the protective cap 22 axially displaces, a component force for rotating the protective cap 22 exists, and the protective cap 22 rotates at the same time of axial displacement.
In the present embodiment, the first inclined surface 22a1, the second inclined surface 21a and the third inclined surface 231b1 are all inclined plane structures, and may be arc-shaped surfaces.
The locking groove 231c has a step surface 231c1 for blocking the tooth post 22a, and the step surface 231c1 in the same clamping groove set 231 is located at one side of the locking groove 231c away from the guide groove 231 a; in the process of pushing the protective cap 22 to axially reset by the elastic element 24, after the tooth post 22a reaches the locking groove 231c, the tooth post 22a contacts with the inner end of the hidden needle cap 21 again to form a first inclined plane matching structure, the tooth post 22a moves axially outwards in the locking groove 231c and rotates towards the side where the step surface 231c1 is located until the inner end of the tooth post 22a is opposite to the step surface 231c1, so that the step surface 231c1 is used for blocking the inward axial displacement of the tooth post 22a, and the protective cap 22 is prevented from generating a second inward axial displacement.
The clamping groove sets 231 are provided with a plurality of tooth columns 22a which are uniformly distributed on the guide sleeve 23 along the circumferential direction of the guide sleeve 23 at equal intervals, the tooth columns 22a are provided with a plurality of tooth columns 22a which are uniformly distributed on the protective cap 22 along the circumferential direction of the protective cap 22, the tooth columns 22a are in one-to-one correspondence with the guide sleeve 23, and the tooth columns 22a are positioned in the guide grooves 231a of the corresponding clamping groove sets 231; by utilizing the design of the plurality of tooth columns 22a and the plurality of clamping groove groups 231, the plurality of tooth columns 22a can drive the protective cap 22 to rotate simultaneously, so that the stability during rotation is ensured, and the protective cap 22 is prevented from being clamped due to unbalanced stress during rotation.
An axial limiting structure for preventing the hidden needle cap 21 from being separated from the guide sleeve 23 is arranged between the hidden needle cap 21 and the guide sleeve 23.
A sliding block 21b protrudes from the needle hiding cap 21, and the sliding block 21b is slidably arranged in a guide groove 231a of the clamping groove set 231; thereby realizing the sliding installation of the hidden needle cap 21 on the guide sleeve 23 and improving the compactness of the structure; meanwhile, when the slider 21b contacts with the outer end of the guide groove 231a, the hidden needle cap 21 is prevented from being separated from the guide sleeve 23, so that an axial limiting structure is formed.
The guide sleeve 23 is sleeved outside the hidden needle cap 21, the outer end of the protective cap 22 is inserted into the hidden needle cap 21, the inner end of the protective cap 22 is inserted into the guide sleeve 23, the clamping groove set 231 is positioned on the inner ring wall of the guide sleeve 23, and the tooth column 22a is positioned at the inner end of the outer peripheral surface of the protective cap 22.
The injection needle 1 comprises a needle seat 11 and a needle tube 12 fixed in the needle seat 11, one end of the elastic element 24 is propped against the protective cap 22, the other end is propped against the needle seat 11, and the elastic element 24 can adopt a spring.
The two ends of the injection needle head 1 are respectively a needle head end and a needle tail end, the needle head end is used for penetrating into a human body to perform injection, and the needle tail end is used for being connected with an injector;
the hidden self-destroying needle in the embodiment has a hidden needle device 2 which is positioned at the needle end of the injection needle 1, namely the needle end of the injection needle 1 is positioned in the protective cap 22 of the hidden needle device 2; hereinafter, the working principle of the present invention will be described by taking an example when the hidden needle device 2 is mounted at the needle end of the injection needle 1:
before injection, as shown in fig. 8, the injection needle 1 is positioned in the protective cap 22, and the tooth post 22a of the protective cap 22 is positioned in the guide groove 231a of the clip groove group 231;
when the injection needle 1 pierces the human body, the hidden self-destruction needle is closed along with the injector, the hidden needle cap 21 at the needle end of the injection needle 1 butts against the skin of the patient, the hidden needle cap 21 generates inward axial displacement relative to the guide sleeve 23, the elastic element 24 is correspondingly compressed, the tooth post 22a initially moves along the guide groove 231a due to the action of the guide groove 231a, namely, the hidden needle cap 21 and the protective cap 22 axially displace together, but the protective cap 22 cannot rotate, the needle end of the injection needle 1 is gradually exposed, as shown in fig. 9, when the tooth post 22a reaches the position where the guide groove 231a is communicated with the locking groove 231c, the blocking in the circumferential direction of the guide groove 231a is lost, and the hidden needle cap 21 only axially moves, the first inclined plane 22a1 at the outer end part of the tooth post 22a and the second inclined plane 21a formed by the mutual matching of the first inclined plane 22a at the inner end of the hidden needle cap 21 enable the protective cap 22 to rotate from the guide groove 231a to the direction of the locking groove 231c, and the projection part of the tooth post 22a and the projection part 1b of the injection needle 1 coincide with each other in the plane perpendicular to the axis of the protective cap 22a, and finally the projection part of the injection needle 1 is projected into the projection part 1;
after injection, as shown in fig. 10, the hidden needle cap 21 loses the obstruction of the human body, the protective cap 22 moves axially outwards under the action of the elastic element 24, at this time, the first inclined surface 22a1 of the tooth post 22a contacts with the third inclined surface 231b1 of the partition part 231b to form a second inclined surface matching structure, when the protective cap 22 moves axially outwards, as the guide sleeve 23 is fixed, only the tooth post 22a rotates along with the protective cap 22, the tooth post 22a gradually rotates into the locking groove 231c, and as the protective cap 22 continues to move axially outwards, the first inclined surface 22a1 of the tooth post 22a contacts with the second inclined surface 21a at the inner end of the hidden needle cap 21 to form a first inclined surface matching structure, and under the action of the first inclined surface matching structure, the tooth post 22a on the protective cap 22 rotates towards the direction of the step surface 231c, so that the protective cap 22 rotates from the guide groove 231a towards the direction until the inner end of the tooth post 22a is opposite to the step surface 231c1, as shown in fig. 11, and the needle cap 22 c is automatically blocked from being blocked by the hidden needle cap 22 c, and the needle cap 22 is automatically blocked from the step surface 1 when the hidden needle cap 22 c is blocked from the inner end of the protective cap 21.
Example 2
Example 2 differs from example 1 in that: the hidden self-destroying needle has one hidden needle device 2 and is positioned at the needle tail end of the injection needle 1, namely the needle tail end of the injection needle 1 is positioned in the protective cap 22 of the hidden needle device 2; when the injection needle 1 is connected with the injector, the protective cap 22 at the needle end of the injection needle 1 is pushed inwards by the injector, and the hiding and self-destruction principles are the same as those of the embodiment 1, except that the protective cap 22 in the embodiment 1 realizes the self axial inward displacement when being against the human body, and the protective cap 22 in the embodiment realizes the self axial inward displacement when being connected with the injector.
Example 3
Example 3 differs from example 1 in that: two needle hiding devices 2 are arranged, and the two needle hiding devices 2 are respectively positioned at two ends of the injection needle 1; the needle hiding device also comprises a shell 3, wherein the guide sleeves 23 in the two needle hiding devices 2 and the injection needle 1 are fixed in the shell 3; therefore, both ends of the injection needle 1 are hidden, the safety of use is improved, and a better self-destruction effect is achieved.
The above-described preferred embodiments according to the present invention are intended to suggest that, from the above description, various changes and modifications can be made by the worker in question without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (11)
1. A hidden self-destruction needle head is characterized in that: the novel needle-hiding device comprises an injection needle (1) and a needle-hiding device (2), wherein the needle-hiding device (2) comprises a needle-hiding cap (21), a protective cap (22), a guide sleeve (23) and an elastic element (24), the guide sleeve (23) is fixed on the injection needle (1), the protective cap (22) is movably arranged on the guide sleeve (23), the needle-hiding cap (21) is slidably arranged on the protective cap (22), and one end of the injection needle (1) is positioned in the protective cap (22); the guide sleeve (23) is provided with a clamping groove group (231), the clamping groove group (231) comprises a guide groove (231 a) and a locking groove (231 c), the inner ends of the guide groove (231 a) and the locking groove (231 c) are communicated with each other, a separation part (231 b) is formed between the guide groove (231 a) and the locking groove (231 c), the protective cap (22) is provided with a tooth column (22 a), and the tooth column (22 a) is positioned in the guide groove (231 a);
the outer end part of the tooth post (22 a) forms a first inclined plane matching structure when contacting with the inner end of the hidden needle cap (21), the outer end part of the tooth post (22 a) forms a second inclined plane matching structure when contacting with the inner end of the separation part (231 b), the first inclined plane matching structure and the second inclined plane matching structure are both used for enabling the protective cap (22) to rotate along the same direction while axially displacing, the elastic element (24) is used for enabling the protective cap (22) to axially displace outwards after axially displacing inwards, and the locking groove (231 c) is used for blocking the tooth post (22 a) in the locking groove, so that the protective cap (22) cannot axially displace inwards;
the locking groove (231 c) is internally provided with a step surface (231 c 1) for blocking the tooth column (22 a), and the step surface (231 c 1) in the same clamping groove group (231) is positioned at one side, far away from the guide groove (231 a), in the locking groove (231 c);
after injection, the elastic element (24) drives the protective cap (22) to axially move outwards, and under the action of the first inclined plane matching structure, the tooth column (22 a) on the protective cap (22) rotates towards the step surface (231 c 1) in the locking groove (231 c), so that the protective cap (22) rotates from the guide groove (231 a) towards the locking groove (231 c) until the inner end of the tooth column (22 a) is opposite to the step surface (231 c 1) to prevent the needle end of the injection needle (1) from being exposed out of the protective cap (2) again.
2. The concealed self-destructing needle of claim 1, in which: the outer end part of the tooth column (22 a) is provided with a first inclined plane (22 a 1), a plurality of second inclined planes (21 a) matched with the first inclined planes (22 a 1) are distributed at intervals at the inner end of the needle hiding cap (21), and a first inclined plane matching structure is formed when the first inclined planes (22 a 1) and the second inclined planes (21 a) are in contact with each other.
3. The concealed self-destructing needle of claim 1, in which: the inner end of the partition part (231 b) is provided with a third inclined surface (231 b 1) matched with the first inclined surface (22 a 1), and the third inclined surface (231 b 1) and the first inclined surface (22 a 1) form a second inclined surface matching structure when contacting with each other.
4. The concealed self-destructing needle of claim 1, in which: the clamping groove sets (231) are provided with a plurality of tooth columns (22 a) and are distributed on the guide sleeve (23) at intervals along the circumferential direction of the guide sleeve (23), the tooth columns (22 a) are provided with a plurality of tooth columns and are distributed on the protective cap (22) at intervals along the circumferential direction of the protective cap (22), the tooth columns (22 a) are in one-to-one correspondence with the guide sleeve (23), and the tooth columns (22 a) are located in the corresponding guide grooves (231 a) of the clamping groove sets (231).
5. The concealed self-destructing needle of claim 1, in which: an axial limiting structure for preventing the hidden needle cap (21) from being separated from the guide sleeve (23) is arranged between the hidden needle cap (21) and the guide sleeve (23).
6. The concealed self-destructing needle of claim 5 and further characterized by: the hidden needle cap (21) is provided with a sliding block (21 b) in a protruding mode, and the sliding block (21 b) is arranged in a guide groove (231 a) of the clamping groove group (231) in a sliding mode.
7. The concealed self-destructing needle of claim 1, in which: the guide sleeve (23) is sleeved outside the hidden needle cap (21), the outer end of the protective cap (22) is inserted into the hidden needle cap (21), the inner end of the protective cap (22) is inserted into the guide sleeve (23), the clamping groove group (231) is positioned on the inner ring wall of the guide sleeve (23), and the tooth column (22 a) is positioned at the inner end of the outer peripheral surface of the protective cap (22).
8. The concealed self-destructing needle of claim 1, in which: the injection needle (1) comprises a needle seat (11) and a needle tube (12) fixed in the needle seat (11), one end of the elastic element (24) is propped against the protective cap (22), and the other end is propped against the needle seat (11).
9. The concealed self-destructing needle of claim 1, in which: the elastic element (24) is a spring.
10. The concealed self-destructing needle of claim 1, in which: the number of the needle hiding devices (2) is two, and the two needle hiding devices (2) are respectively positioned at two ends of the injection needle head (1).
11. The concealed self-destructing needle of claim 10 and further characterized by: the needle hiding device also comprises a shell (3), and a guide sleeve (23) and an injection needle (1) in the two needle hiding devices (2) are fixed in the shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110330820.7A CN113082390B (en) | 2021-03-26 | 2021-03-26 | Concealed self-destroying needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110330820.7A CN113082390B (en) | 2021-03-26 | 2021-03-26 | Concealed self-destroying needle |
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| Publication Number | Publication Date |
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| CN113082390A CN113082390A (en) | 2021-07-09 |
| CN113082390B true CN113082390B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110330820.7A Active CN113082390B (en) | 2021-03-26 | 2021-03-26 | Concealed self-destroying needle |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113456947A (en) * | 2021-07-23 | 2021-10-01 | 贝普医疗科技股份有限公司 | Safety anti-acupuncture self-destruction syringe needle |
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| CN110141733A (en) * | 2019-05-10 | 2019-08-20 | 山东连发医用塑胶制品有限公司 | A kind of safe injection of insulin syringe needle |
| CN110548202A (en) * | 2019-08-20 | 2019-12-10 | 山东连发医用塑胶制品有限公司 | Safe adjustable insulin syringe needle |
| CN211068474U (en) * | 2019-09-29 | 2020-07-24 | 江苏德尔福医疗器械有限公司 | Injection device with hidden needle function |
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2021
- 2021-03-26 CN CN202110330820.7A patent/CN113082390B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107823761A (en) * | 2017-12-08 | 2018-03-23 | 宁波美生医疗器材有限公司 | A kind of new type of safe novopen, which is matched somebody with somebody, applies mechanically pin |
| CN110141733A (en) * | 2019-05-10 | 2019-08-20 | 山东连发医用塑胶制品有限公司 | A kind of safe injection of insulin syringe needle |
| CN110548202A (en) * | 2019-08-20 | 2019-12-10 | 山东连发医用塑胶制品有限公司 | Safe adjustable insulin syringe needle |
| CN211068474U (en) * | 2019-09-29 | 2020-07-24 | 江苏德尔福医疗器械有限公司 | Injection device with hidden needle function |
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| CN113082390A (en) | 2021-07-09 |
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