CN202605429U - Safety indwelling needle - Google Patents
Safety indwelling needle Download PDFInfo
- Publication number
- CN202605429U CN202605429U CN 201220202812 CN201220202812U CN202605429U CN 202605429 U CN202605429 U CN 202605429U CN 201220202812 CN201220202812 CN 201220202812 CN 201220202812 U CN201220202812 U CN 201220202812U CN 202605429 U CN202605429 U CN 202605429U
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- CN
- China
- Prior art keywords
- needle
- elasticity card
- card body
- hole
- elastic clip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a safety indwelling needle, which comprises a needle head assembly and an injection connector assembly, wherein the needle head assembly comprises a bushing seat and a puncture needle, an isolation plug is installed inside the bushing seat, the bushing seat is divided by the isolation plug into an injection cavity and a needle seat cavity, the front part of a needle head is provided with a blood return side groove, a needle tip protection chamber is arranged between the needle seat cavity and the isolation plug, a needle tip protection elastic clip is installed inside the needle tip protection chamber, the needle tip protection elastic clip is provided with a parallelogram elastic clip body which is formed by bending an elastic clip bar, two side edges of the elastic clip body are closely matched with the side wall of the needle tip protection chamber, the middle parts of an upper edge and a lower edge of the elastic clip body are respectively provided with an upper through hole and a lower through hole, which are matched with the outer diameter of the needle head, and one side edge of the lower through hole is provided with an elastic stop plate which is matched with the blood return side groove. The safety indwelling needle is reasonable in design, simple in structure, convenient to use, capable of protecting a needle tip, preventing the phenomenon that the puncture needle injures people and realizing a purpose of safety protection and cross infection prevention and is convenient in clinic use.
Description
Technical field
This utility model relates to a kind of transfusion medical apparatus and instruments, particularly a kind of safety indwelling needle.
Background technology
The Along with people's growth in the living standard, the safety indwelling needle less to blood vessel injury has been widely used in clinical.But the puncture needle in the transfusion operation process has broken away from safety indwelling needle after puncture finishes to release, its needle point is prone to stab medical personnel or other personnel, medical personnel is injured and cross infection, arbitrarily puts simultaneously, causes environmental pollution easily.
Summary of the invention
This utility model technical problem to be solved is the deficiency to prior art, provides a kind of rational in infrastructure, easy to use, the remaining needle that can needle point guard be got up.
This utility model technical problem to be solved is to realize through following technical scheme, and this utility model is a kind of safety indwelling needle, comprises needle assembly, fluid injection adapter assembly; Connect through conduit between needle assembly and the fluid injection adapter assembly; Described needle assembly comprises casing seat and puncture needle, and described casing seat front end is provided with the indwelling flexible pipe, and batching pig is housed in the casing seat; Casing seat is divided into fluid injection chamber and needle stand chamber through batching pig; Puncture needle comprises syringe needle and needle handle, and the front portion of syringe needle is provided with the blood back side channel, is characterized in: be provided with the needle point guard chamber between needle stand chamber and the batching pig; At the indoor needle point guard elasticity card that is equipped with of needle point guard; Described needle point guard elasticity is arranged with the elasticity card body of the parallelogram that is bent to form by the elasticity card article, and a side of elasticity card body is overlapped by the head end of elasticity card article and tail end and constitutes, and two sides of elasticity card body and the sidewall of needle point guard chamber closely cooperate; Distance between the bottom and upper segment of elasticity card body is greater than the distance of needle tip to blood back side channel; The centre position of the bottom and upper segment of elasticity card body be respectively equipped with cooperate with the syringe needle external diameter on through hole and lower through-hole, described lower through-hole is square, a side of lower through-hole is provided with the elastic block piece that cooperates with the blood back side channel.
This utility model technical problem to be solved can also further realize that the epimere of the side of the head and the tail overlap joint of elasticity card body is vertical with the top of elasticity card body through following technical scheme, and the angle of the bottom of hypomere and elasticity card body is 75 °～85 °.
This utility model is through being provided with needle point guard elasticity card between batching pig and puncture needle needle handle, puncture needle passes needle point guard elasticity and is installed in the casing seat, after vein puncture finishes; Extract puncture needle out, when the forward blood back side channel of syringe needle passed through the elastic block piece on the elasticity card body, elastic block piece was stuck in blood back side channel place; Make needle point guard elasticity card along with puncture needle breaks away from casing seat together; The needle point guard elasticity card restore nature state that breaks away from casing seat makes the last through hole and the lower through-hole dislocation of elasticity card body, thereby makes elasticity card body atresia position cover needle point; Make needle point can not be on passing through hole; Thereby needle point guard got up, can not stab medical personnel, reach security protection and prevent the purpose of cross infection.
Compared with prior art, it is reasonable in design, and is simple in structure, easy to use, need not place especially puncture needle in the infusion process, has stopped puncture needle and has been prone to the phenomenon that thorn is hurted sb.'s feelings, and has made things convenient for clinical use.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of puncture needle guard mode.
The specific embodiment
Following with reference to accompanying drawing, further describe the concrete technical scheme of this utility model, so that those skilled in the art understands the present invention further, and do not constitute restriction to its right.
With reference to Fig. 1 and 2, a kind of safety indwelling needle comprises needle assembly, fluid injection adapter assembly 1; Connect through conduit 2 between needle assembly and the fluid injection adapter assembly 1, described needle assembly comprises casing seat 6 and puncture needle, and described casing seat 6 front ends are provided with the indwelling flexible pipe; Batching pig 5 is housed in the casing seat 6, and casing seat 6 is divided into fluid injection chamber and needle stand chamber through batching pig 5, and puncture needle comprises syringe needle 8 and needle handle 3; The front portion of syringe needle 8 is provided with blood back side channel 7; Be provided with the needle point guard chamber between needle stand chamber and the batching pig 5, at the indoor needle point guard elasticity card 4 that is equipped with of needle point guard, described needle point guard elasticity card 4 is provided with the elasticity card body 9 of the parallelogram that is bent to form by the elasticity card article; One side of elasticity card body 9 is overlapped by the head end of elasticity card article and tail end and constitutes; It is for distortion allowance is arranged that head end and tail end overlap, and two sides of elasticity card body 9 and the sidewall of needle point guard chamber closely cooperate, and the distance between the bottom and upper segment of elasticity card body 9 is greater than the distance of syringe needle 8 needle points to blood back side channel 7; Needle point can be in the elasticity card body 9 fully; The centre position of the bottom and upper segment of elasticity card body 9 be respectively equipped with cooperate with syringe needle 8 external diameters on through hole 10 and lower through-hole 12, described lower through-hole 12 is square, a side of lower through-hole 12 is provided with the elastic block piece 11 that cooperates with blood back side channel 7.
During making; Earlier batching pig 5 is installed in the casing seat 6; It is indoor then needle point guard elasticity card 4 to be installed in needle point guard, and needle point guard elasticity card 4 is indoor by the fixing rectangle structure that forms of its inwall extruding at needle point guard, and its center of going up through hole 10 and lower through-hole 12 is on same straight line simultaneously; Again the syringe needle 8 of puncture needle is inserted last through hole 10 and lower through-hole 12 through batching pig 5 and needle point guard elasticity card 4 backward from the indwelling flexible pipe of front end, again needle handle 3 is loaded onto at last.
During use, after puncture finishes, extract puncture needle out; When syringe needle 8 forward blood back side channels 7 passed through the elastic block piece 11 on the elasticity card bodies 9, elastic block piece 11 was stuck in blood back side channel 7 places, and at this moment syringe needle 8 needle points to blood back side channel 7 just is in the elasticity card body 9 fully; Pulling again; Make needle point guard elasticity card 4 along with puncture needle breaks away from casing seat 6 together, the needle point guard elasticity card 4 that breaks away from casing seat 6 returns to the parallelogram sturcutre state of nature, makes the last through hole 10 and lower through-hole 12 dislocation of elasticity card body 9; Thereby make elasticity card body 9 atresia positions cover needle point, make needle point can not pass through hole 10 again.
The epimere of the side of the head and the tail overlap joint of elasticity card body 9 is vertical with the top of elasticity card body 9, and the angle of the bottom of hypomere and elasticity card body 9 is 75 °～85 °, can increase the elasticity of elasticity card body 9, under naturalness, can make needle point be difficult for passing from last through hole 10.
Claims (2)
1. a safety indwelling needle comprises needle assembly, fluid injection adapter assembly, connects through conduit between needle assembly and the fluid injection adapter assembly; Described needle assembly comprises casing seat and puncture needle, and described casing seat front end is provided with the indwelling flexible pipe, and batching pig is housed in the casing seat; Casing seat is divided into fluid injection chamber and needle stand chamber through batching pig; Puncture needle comprises syringe needle and needle handle, and the front portion of syringe needle is provided with the blood back side channel, it is characterized in that: be provided with the needle point guard chamber between needle stand chamber and the batching pig; At the indoor needle point guard elasticity card that is equipped with of needle point guard; Described needle point guard elasticity is arranged with the elasticity card body of the parallelogram that is bent to form by the elasticity card article, and a side of elasticity card body is overlapped by the head end of elasticity card article and tail end and constitutes, and two sides of elasticity card body and the sidewall of needle point guard chamber closely cooperate; Distance between the bottom and upper segment of elasticity card body is greater than the distance of needle tip to blood back side channel; The centre position of the bottom and upper segment of elasticity card body be respectively equipped with cooperate with the syringe needle external diameter on through hole and lower through-hole, described lower through-hole is square, a side of lower through-hole is provided with the elastic block piece that cooperates with the blood back side channel.
2. safety indwelling needle according to claim 1 is characterized in that: the epimere of the side of the head and the tail overlap joint of elasticity card body is vertical with the top of elasticity card body, and the angle of the bottom of hypomere and elasticity card body is 75 °～85 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220202812 CN202605429U (en) | 2012-05-08 | 2012-05-08 | Safety indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220202812 CN202605429U (en) | 2012-05-08 | 2012-05-08 | Safety indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202605429U true CN202605429U (en) | 2012-12-19 |
Family
ID=47339166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220202812 Expired - Lifetime CN202605429U (en) | 2012-05-08 | 2012-05-08 | Safety indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202605429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071204A (en) * | 2013-01-29 | 2013-05-01 | 苏州林华医疗器械有限公司 | Safety type detaining needle with disposable use |
-
2012
- 2012-05-08 CN CN 201220202812 patent/CN202605429U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071204A (en) * | 2013-01-29 | 2013-05-01 | 苏州林华医疗器械有限公司 | Safety type detaining needle with disposable use |
| CN103071204B (en) * | 2013-01-29 | 2014-02-26 | 苏州林华医疗器械有限公司 | Safety type detaining needle with disposable use |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |