CN215024076U - Sleeve type puncture-proof syringe - Google Patents
Sleeve type puncture-proof syringe Download PDFInfo
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- CN215024076U CN215024076U CN202120711228.7U CN202120711228U CN215024076U CN 215024076 U CN215024076 U CN 215024076U CN 202120711228 U CN202120711228 U CN 202120711228U CN 215024076 U CN215024076 U CN 215024076U
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Abstract
The utility model discloses a sleeve type stab-resistant injector, which comprises a needle cylinder, a push rod, a needle head and a needle cap, wherein a protective cylinder is sleeved on the needle cylinder, the protective cylinder is provided with a holding cavity and a connecting hole which is arranged at the end part and communicated with the holding cavity, symmetrical assembling chutes and symmetrical protecting chutes are respectively arranged in the holding cavity, one end of the protective cylinder, which is provided with the connecting hole, is provided with symmetrical switching slide holes, two ends of the switching slide holes are communicated with the assembling chute and the protecting chute, and the communicated two ends are respectively provided with a positioning column hole, the diameter of the positioning column hole is larger than the width of the switching slide hole, and the end part of the protecting chute, which is far away from the connecting hole, is provided with a protecting positioning hole; the end part of the needle cylinder connected with the needle head is symmetrically provided with protective positioning columns, and the distance between the outer end parts of the two protective positioning columns is larger than the distances between the bottoms of the two assembling sliding chutes and the bottoms of the two protective sliding chutes. The utility model discloses a protect a section of thick bamboo cooperation design, can reach and prevent stabbing the use purpose, simple structure, prevent that the fail safe nature of stabbing is also higher moreover.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to telescopic stab-resistant syringe.
Background
The injector is a medical appliance commonly used by medical staff, a needle head on the injector is generally provided with a needle cap for protection before injection, dispensation and use, and the needle head is positioned in a sheath without use so as not to cause puncture injury to the medical staff; however, after the needle is used, the needle cap is separated from the needle head of the syringe, so that the needle cap is easy to lose, and the needle cap cannot be buckled on the needle head again due to the large workload and working strength of medical staff, so that the exposed sharp needle head is easy to cause puncture injury to the medical staff, and the needle head exposed outside in the concentrated placement and recovery process cannot cause puncture injury to the staff; the liquid medicine and germs used for injection are mostly remained on the used injection needle and the needle head, and the risk of germ infection is easily caused by puncture wound under any condition.
Therefore, various syringes with puncture-proof structures are available on the market, and the syringes have structures with retractable needles after use, but the syringes have complex structures and high cost; the needle head can be covered by a bent protective cap structure, but the reliability of the use is low, the needle head is easy to fall off, and the safety hidden danger is still high; therefore, there is a need for an improved anti-puncture structure on a syringe that addresses the deficiencies of the prior art.
Disclosure of Invention
The utility model aims at solving the problem in the prior art and providing a sleeve type puncture-proof injector.
In order to achieve the above purpose, the technical scheme of the utility model is that: a sleeve type stab-resistant injector comprises a needle cylinder, a push rod, a needle head and a needle cap, wherein a protective cylinder is sleeved on the needle cylinder and provided with an accommodating cavity and a connecting hole which is formed in the end part and communicated with the accommodating cavity, symmetrical assembling chutes and symmetrical protecting chutes are respectively arranged in the accommodating cavity, symmetrical switching slide holes are formed in one end, provided with the connecting hole, of the protective cylinder, two ends of each switching slide hole are communicated with the assembling chutes and the protecting chutes, positioning column holes are respectively formed in the two communicated ends of each switching slide hole, the diameter of each positioning column hole is larger than the width of each switching slide hole, and a protecting positioning hole is formed in the end part, far away from the connecting hole, of the protecting chute; the end part of the needle cylinder connected with the needle head is symmetrically provided with protective positioning columns, the distance between the outer end parts of the two protective positioning columns is larger than the distance between the two assembling chutes and the two protective chutes, the protective positioning columns are pulled along the assembling chutes and can be switched to the protective chutes to slide through the switching slide holes, and the protective positioning columns can be positioned with the positioning column holes and the protective positioning holes; when the protection positioning column is positioned in the positioning column hole in the assembly sliding groove, a use positioning state is formed between the protection cylinder and the needle cylinder, and when the protection positioning column is positioned in the protection positioning hole in the protection sliding groove, a use anti-puncture state is formed between the protection cylinder and the needle cylinder.
In the above sleeve type puncture-proof injector, the cross section of the accommodating cavity is elliptical, and the assembling chute and the protecting chute are respectively arranged at two sides of the elliptical short shaft of the accommodating cavity.
In the sleeve type stab-resistant injector, the protective sliding chute is internally provided with an auxiliary unlocking groove, one side of the auxiliary unlocking groove is closely connected with the positioning column hole, and the other side of the auxiliary unlocking groove is provided with an auxiliary sliding inclined plane.
In the above-mentioned sleeve-type stab-resistant syringe, the end of the assembling chute is provided with a flared inclined surface
Adopt above technical scheme, the utility model discloses following beneficial effect has:
the utility model is provided with the protective cylinder outside the needle cylinder, when in normal assembly and use, the protective positioning convex column on the needle cylinder slides along the assembly sliding groove and then is positioned in the positioning column hole, so that a relative positioning state is formed between the needle cylinder and the protective cylinder, and the needle cap can be directly pulled out for use when in use; after injection, the needle cylinder is pulled, the protection positioning convex column is switched to the protection sliding groove to slide through the sliding hole, so that a use puncture-proof state is formed between the protection cylinder and the needle cylinder when the needle cylinder slides in the protection positioning hole, and the needle head is positioned in the protection cylinder; the utility model discloses a protect a section of thick bamboo cooperation design, can reach and prevent stabbing the use purpose, simple structure, prevent that the fail safe nature of stabbing is also higher moreover.
Drawings
Fig. 1 is an exploded view of the present invention;
figure 2 is a cross-sectional view of the invention (in use);
fig. 3 is a cross-sectional view of the present invention (in the stab-resistant state);
fig. 4 is a perspective view of the middle guard cylinder of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1 to 4, the utility model provides a sleeve type puncture-proof injector, which comprises a needle cylinder 1, a push rod 2, a needle head 3 and a needle cap 4, wherein the needle cylinder 1 is sleeved with a protective cylinder 5, the protective cylinder 5 has elasticity and can be elastically deformed under stress, the protective cylinder 5 is provided with an accommodating cavity 6 and a connecting hole 7 arranged at the end part and communicated with the accommodating cavity 6, symmetrical assembling chutes 8 and symmetrical protecting chutes 9 are respectively arranged in the accommodating cavity 6, one end of the protective cylinder 5 provided with the connecting hole 7 is provided with symmetrical switching slide holes 10, two ends of the switching slide holes 10 are communicated with the assembling chutes 8 and the protecting chutes 9, and two communicated ends are respectively provided with a positioning column hole 11; the end part of the protection sliding chute 9 far away from the connecting hole 7 is provided with a protection positioning hole 12; the end part of the needle cylinder 1 connected with the needle head 3 is symmetrically provided with protective positioning columns 13;
during assembly, the needle cylinder 1 slides into the accommodating cavity 6 of the protective cylinder 5 along the assembly sliding chute 8 through the protection positioning column 13 at the end part of the needle cylinder until slides into the positioning column hole 11 in the assembly sliding chute 8, the distance between the outer end parts of the two protection positioning columns 13 is larger than the distance between the bottoms of the two assembly sliding chutes 8, and the diameter of the positioning column hole 11 is larger than the width of the switching sliding hole 10, so that the needle cylinder 1 can be positioned and clamped in the positioning column hole 11 through the protection positioning column 13 at the end part of the needle cylinder 1, so that the needle cylinder 1 and the protective cylinder 5 are positioned and clamped, the needle head 3 and the needle head 3 connected with the needle cylinder 1 penetrate through the connecting hole 7 and are positioned outside, at the moment, the injector is in a state to be used, and the needle cap 4 can be directly pulled out for use;
after the injection is finished, the needle cylinder 1 is pulled, the protective cylinder 5 is elastic, even if the diameter of the protective positioning column 13 is larger than the width of the switching sliding hole 10, the switching sliding hole 10 is still deformed by applying force, so that the protective positioning column 13 slides to the positioning column hole 11 in the protective sliding groove 9 along the switching sliding hole 10, the force is continuously applied, the protective positioning column 13 is released from the positioning column hole 11 and is positioned in the protective sliding groove 9, finally, the protective positioning column 13 at the end part correspondingly slides to the protective positioning hole 12 in the process of pulling the needle cylinder 1, and as the distance between the outer end parts of the two protective positioning columns 13 is larger than the distance between the bottoms of the two protective sliding grooves 9, the needle cylinder 1 is positioned and clamped in the protective positioning hole 12 through the protective positioning column 13 at the end part, so that the needle cylinder 1 and the protective cylinder 5 form positioning and clamping connection, and the needle is positioned in the accommodating cavity 6 of the protective cylinder 5, The used syringe can complete the puncture-proof state.
Further, the cross section of the accommodating cavity 6 is elliptical, and the assembly sliding chute 8 and the protection sliding chute 9 are respectively arranged on two sides of the elliptical short shaft of the accommodating cavity 6; oval shape's holding chamber 6, cooperate again and protect a 5 self deformability for the protection reference column 13 of 1 tip of cylinder is assembling spout 8, switching slide opening 10, the better shore of carrying on of protection spout 9 slides, and the location joint to protection reference column 13 after finishing sliding and protecting a 5 reconversion, makes and protects a 5 and have better deformation and resilience ability.
Further, an auxiliary unlocking groove 14 is arranged in the protective sliding groove 9, one side of the auxiliary unlocking groove 14 is closely connected with the positioning column hole 11, and an auxiliary sliding inclined plane 15 is arranged on the other side of the auxiliary unlocking groove 14; so that when the needle cylinder 1 is pulled, the protection positioning column 13 at the end part of the needle cylinder is easier to be positioned and slide from the positioning column hole 11 to the protection sliding chute 9.
Furthermore, in order to facilitate the assembly of the needle cylinder 1, the end protection positioning column 13 thereof can slide into the assembly chute 8 more easily, and the end of the assembly chute 8 is provided with a flared inclined surface 16.
The above detailed description is made on the sleeve type anti-stab syringe provided by the embodiment of the present invention, and the specific examples are applied herein to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understand the technical solution disclosed by the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (4)
1. A sleeve type stab-resistant injector comprises a needle cylinder, a push rod, a needle head and a needle cap, and is characterized in that: the needle cylinder is sleeved with a protective cylinder, the protective cylinder is provided with an accommodating cavity and a connecting hole which is arranged at the end part and communicated with the accommodating cavity, symmetrical assembling chutes and symmetrical protecting chutes are respectively arranged in the accommodating cavity, symmetrical switching slide holes are arranged at one end of the protective cylinder, which is provided with the connecting hole, two ends of each switching slide hole are communicated with the assembling chute and the protecting chute, positioning column holes are respectively arranged at two communicated ends, the diameter of each positioning column hole is larger than the width of each switching slide hole, and a protecting positioning hole is arranged at the end part of the protecting chute, which is far away from the connecting hole; the end part of the needle cylinder connected with the needle head is symmetrically provided with protective positioning columns, the distance between the outer end parts of the two protective positioning columns is larger than the distance between the bottoms of the two assembling sliding chutes and the bottoms of the two protective sliding chutes, the protective positioning columns are pulled along the assembling sliding chutes and can be switched to the protective sliding chutes to slide through the switching sliding holes, and the protective positioning columns can be positioned with the positioning column holes and the protective positioning holes; when the protection positioning column is positioned in the positioning column hole in the assembly sliding groove, a use positioning state is formed between the protection cylinder and the needle cylinder, and when the protection positioning column is positioned in the protection positioning hole in the protection sliding groove, a use anti-puncture state is formed between the protection cylinder and the needle cylinder.
2. A telescopic stab-resistant syringe as claimed in claim 1, wherein: the cross section of the accommodating cavity is in an elliptical shape, and the assembling sliding groove and the protecting sliding groove are respectively arranged on two sides of the elliptical short shaft of the accommodating cavity.
3. A telescopic stab-resistant syringe according to claim 1 or 2, wherein: an auxiliary unlocking groove is arranged in the protective sliding groove, one side of the auxiliary unlocking groove is closely connected with the positioning column hole, and an auxiliary sliding inclined plane is arranged on the other side of the auxiliary unlocking groove.
4. A telescopic stab-resistant syringe according to claim 1 or 2, wherein: and the end part of the assembling chute is provided with a flaring inclined plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120711228.7U CN215024076U (en) | 2021-04-08 | 2021-04-08 | Sleeve type puncture-proof syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120711228.7U CN215024076U (en) | 2021-04-08 | 2021-04-08 | Sleeve type puncture-proof syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215024076U true CN215024076U (en) | 2021-12-07 |
Family
ID=79150793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120711228.7U Active CN215024076U (en) | 2021-04-08 | 2021-04-08 | Sleeve type puncture-proof syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215024076U (en) |
-
2021
- 2021-04-08 CN CN202120711228.7U patent/CN215024076U/en active Active
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| GR01 | Patent grant | ||
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