CN103007385B - Secure type indwelling and shielding cap - Google Patents
Secure type indwelling and shielding cap Download PDFInfo
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- CN103007385B CN103007385B CN201310003103.9A CN201310003103A CN103007385B CN 103007385 B CN103007385 B CN 103007385B CN 201310003103 A CN201310003103 A CN 201310003103A CN 103007385 B CN103007385 B CN 103007385B
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Abstract
The embodiment of the invention discloses a secure type indwelling needle and a shielding cap and is used for prevent a medical personnel from being punctured by a puncture needle. The secure type indwelling needle provided by the embodiment comprises an indwelling catheter component 1, a puncture needle component 2 and a shielding cap 3; after the puncture needle component 2 is pulled out, the puncture needle component 2 is accommodated inside the shielding cap 3; and when the puncture needle component 2 exits from a front end limitation device 31, the front end limitation device 31 deviates from an original position and slides towards a lower part under the action of gravity so as to stop an extending channel 33 and prevent a puncture needle 21 from reversely passing. A back end limitation position 32 can prevent the puncture needle component 2 from leaving the shielding cap 3; thus, the puncture needle component 2 and the indwelling catheter component 1 are separated, and the puncture needle component 2 is safely discarded, so that the medical personnel is prevented from being punctured by a puncture needle; because the volume of the shielding cap 3 is smaller than that of a complete protection housing in the prior art, the secure type indwelling needle is more conveniently used by the medical personnel.
Description
Technical field
The present invention relates to disposable medical instrument field, relate in particular to a kind of safe type retention needle and shielding cap.
Background technology
Remaining needle is a kind of for repeatedly carrying out within a certain period of time the medical apparatus and instruments of infusion treatment, generally comprises puncture needle and is enclosed within the inlying catheter above puncture needle.Because inlying catheter is soft and flexible, in the time that catheter retaining is in blood vessel, conduit can be along with blood vessel synchronous zigzag, and the position of catheter retaining still can freely be moved, and does not have the danger of puncture vein.Therefore, relatively common scalp acupuncture, uses retention needle infusion to have more safety, and reduces the sense of discomfort of patient while infusing.
The use of remaining needle has also brought after retained needle puncture simultaneously, and the danger that what the needle point coming out can meet accident stab medical personnel in this case, just makes medical personnel be easy to be subject to the infection of the pathogen of the various danger that blood carries.The danger that medical personnel can be subject to unexpected acupuncture has impelled the exploitation of safe type retention needle, and the use of this safe type retention needle can prevent described accidental acupuncture.
But safe type retention needle of the prior art has shortcoming more or less, thereby limit their serviceability, can not have been approved completely by medical personnel.For example, in the Chinese invention patent that application number is 03814386.0, disclose a kind of retained needle puncture needle tip shielding device, this device only can shield needle point, can not shield the side opening of water conservancy diversion blood on needle tubing, and whole device relative complex.Application number is in 03141566.0 Chinese invention patent in disclosed a kind of safe type retention needle; by puncture after puncture needle components containing in the safeguard protection shell of a tubulose; its safeguard protection valve jacket is on catheter block, and containment vessel length is larger, makes troubles to medical personnel's operation.
Summary of the invention
The embodiment of the present invention provides a kind of safe type retention needle and shielding cap, stabs for avoiding medical personnel to be threaded a needle.
A kind of safe type retention needle that the embodiment of the present invention provides specifically comprises:
Inlying catheter assembly 1, puncture needle assembly 2 and shielding cap 3;
Shielding cap 3 is arranged on inlying catheter assembly 1 by removably;
Puncture needle assembly 2 runs through inlying catheter assembly 1 and shielding cap 3;
Puncture needle assembly 2 can slide at inlying catheter assembly 1 and shielding cap 3 internal freedoms;
Shielding cap 3 comprises:
Housing 35, extension passage 33, front end stopping means 31 and rear end stopping means 32;
Housing 35 is cylindrical, hollow housing;
Front end stopping means 31 is arranged on the cavity inside of housing 35 front ends, can in cavity, slide up and down;
Rear end stopping means 32 is fixed on housing 35 rear ends;
Extend passage 33 between front end stopping means 31 and rear end stopping means 32;
Front end stopping means 31 and rear end stopping means 32 centers arrange through hole, and through hole aligns with extension passage 33;
Puncture needle assembly 2 runs through the through hole at front end stopping means 31 and rear end stopping means 32 centers;
In the time that puncture needle assembly 2 exits front end stopping means 31, front end stopping means 31 is due to action of gravity, under slide into cavity bottom, stop up and extend passage 33;
Rear end stopping means 32 departs from shielding cap 3 for preventing puncture needle assembly 2.
Optionally,
Shielding cap 3 also comprises:
Shell fragment 36;
Shell fragment 36 is arranged on a side of front end stopping means 31;
Before shell fragment 36 does not trigger, in compressive state;
In the time that puncture needle assembly 2 exits front end stopping means 31, shell fragment 36 is opened, and forces front end stopping means to slide to cavity bottom, blocks and extends passage 33.
Optionally,
Shielding cap 3 also comprises:
The first Magnetitum 37 and the second Magnetitum 38;
The first Magnetitum 37 is fixed on the housing 35 of front end stopping means 31 1 sides;
The second Magnetitum 38 and the first Magnetitum 37 are symmetrical arranged, and are fixed on front end stopping means 31;
In the time that puncture needle assembly 2 exits front end stopping means 31, the second Magnetitum 38 is subject to the gravitation of the first Magnetitum 37, forces front end stopping means 31 to slide to the first Magnetitum 37, stops up and extends passage 33.
Optionally,
Inlying catheter assembly 1 comprises:
Conduit 11, catheter block 12, batching pig 13, extension tube 14, pipe clamp 15 and joint 16;
Catheter block 12 comprises:
First interface 121, the second interface 122 and the 3rd interface 123;
Batching pig 13 is fixed in first interface 121;
First interface 121 and the second interface 122 axially connect, built-in puncture needle assembly 1;
Puncture needle 21, through batching pig 13, stretches out in outside the second interface 122 of catheter block 12;
One end jointing 16 of extension tube 14, the other end and the 3rd interface 123 are socketed;
Pipe clamp 15 is enclosed within extension tube 14;
Conduit 11 is socketed on the second interface 122, and is sleeved on puncture needle 21.
Optionally,
Puncture needle assembly 2 comprises:
Puncture needle 21, Paracentesis needle holder 22;
The afterbody of puncture needle 21 is fixed on Paracentesis needle holder 22;
The front end of shielding cap 3 is plugged on first interface 121, and puncture needle 21 is through front end stopping means 31, rear end stopping means 32 and extend passage 33.
Optionally,
First interface 121 places are provided with at least one snap ring 124;
The front end of shielding cap 3 is provided with the buckle 34 matching with snap ring 124;
Shielding cap 3 is connected with snap ring 124 by buckle 34.
Optionally,
Puncture needle 21 arranges at least one projection 211 above;
Front end stopping means 31 and extension passage 33 can ensure that whole puncture needle 21 passes through;
The projection 211 that rear end stopping means 32 limits on puncture needle 21 can not be passed through;
Front end stopping means 31 is after puncture needle passes through, and depart from position, blocks and extends passage 33, stops puncture needle 21 to return.
The present invention is that strength also provides a kind of shielding cap specifically to comprise:
Housing 35, extension passage 33, front end stopping means 31 and rear end stopping means 32;
Front end stopping means 31 is arranged on the cavity inside of housing 35 front ends, can in cavity, slide up and down;
Rear end stopping means 32 is fixed on housing 35 rear ends;
Extend passage 33 between front end stopping means 31 and rear end stopping means 32;
Front end stopping means 31 and rear end stopping means 32 centers arrange through hole, and through hole aligns with extension passage 33;
Puncture needle assembly 2 runs through the through hole at front end stopping means 31 and rear end stopping means 32 centers;
In the time that puncture needle assembly 2 exits front end stopping means 31, front end stopping means 31 is due to action of gravity, under slide into cavity bottom, stop up and extend passage 33;
Rear end stopping means 32 departs from shielding cap 3 for preventing puncture needle assembly 2.
Shielding cap also comprises:
Shell fragment 36;
Shell fragment 36 is arranged on a side of front end stopping means 31;
Before shell fragment 36 does not trigger, in compressive state;
In the time that puncture needle assembly 2 exits front end stopping means 31, shell fragment 36 is opened, and forces front end stopping means to slide to cavity bottom, blocks and extends passage 33.
Optionally,
Shielding cap also comprises:
The first Magnetitum 37 and the second Magnetitum 38;
The first Magnetitum 37 is fixed on the housing 35 of front end stopping means 31 1 sides;
The second Magnetitum 38 and the first Magnetitum 37 are symmetrical arranged, and are fixed on front end stopping means 31;
In the time that puncture needle assembly 2 exits front end stopping means 31, the second Magnetitum 38 is subject to the gravitation of the first Magnetitum 37, forces front end stopping means 31 to slide to the first Magnetitum 37, stops up and extends passage 33.
As can be seen from the above technical solutions; the embodiment of the present invention has the following advantages: prior art be by puncture after puncture needle components containing in the safeguard protection shell of a tubulose; this safeguard protection valve jacket, on catheter block, because containment vessel length is larger, is made troubles to medical personnel's operation.A kind of safe type retention needle provided by the invention comprises inlying catheter assembly 1, puncture needle assembly 2 and shielding cap 3; Inlying catheter assembly 1 intravasation, puncture needle assembly 2 can be extracted out from inlying catheter assembly 1.After puncture needle assembly 2 is extracted out, puncture needle assembly 2 is contained in the inside of shielding cap 3, continue to extract out puncture needle assembly 2, puncture needle assembly 2 exits front end stopping means 31, and front end stopping means 31 departs from the holding power of puncture needle assembly 2, under action of gravity, slide to cavity bottom, depart from original position, block and extend passage 33, stop puncture needle 21 oppositely to pass through.Rear end stopping means 32 can prevent that puncture needle assembly 2 from departing from shielding cap 3.Continue to extract out puncture needle assembly 2; shielding cap 3 departs from inlying catheter assembly 1; related puncture needle assembly 2 shielding cap 3 together can be abandoned; thereby avoiding medical personnel to be threaded a needle stabs; because the volume of shielding cap 3 volumes all risk insurance protective case relatively of the prior art is little, so medical worker is more convenient to use.
Brief description of the drawings
The structural representation of an embodiment of a kind of safe type retention needle that Fig. 1 provides for the embodiment of the present invention;
The structural representation of another embodiment of a kind of safe type retention needle that Fig. 2 provides for the embodiment of the present invention;
An example structure schematic diagram of a kind of puncture needle assembly that Fig. 3 provides for the embodiment of the present invention;
The junction structural representation of inlying catheter assembly, puncture needle assembly and the shielding cap of a kind of safe type retention needle that Fig. 4 provides for the embodiment of the present invention;
The structural representation of the first embodiment of a kind of shielding cap that Fig. 5 provides for the embodiment of the present invention;
The second example structure schematic diagram of a kind of shielding cap that Fig. 6 provides for the embodiment of the present invention;
The 3rd example structure schematic diagram of a kind of shielding cap that Fig. 7 provides for the embodiment of the present invention.
Detailed description of the invention
The embodiment of the present invention provides a kind of safe type retention needle and shielding cap, stabs for avoiding medical personnel to be threaded a needle.
Refer to Fig. 1, an embodiment of a kind of safe type retention needle that the embodiment of the present invention provides specifically comprises:
Inlying catheter assembly 1, puncture needle assembly 2 and shielding cap 3;
Shielding cap 3 is arranged on inlying catheter assembly 1 by removably;
Puncture needle assembly 2 runs through inlying catheter assembly 1 and shielding cap 3;
Puncture needle assembly 2 can slide at inlying catheter assembly 1 and shielding cap 3 internal freedoms;
Shielding cap 3 comprises:
Housing 35, extension passage 33, front end stopping means 31 and rear end stopping means 32;
Housing 35 is cylindrical, hollow housing;
Front end stopping means 31 is arranged on the cavity inside of housing 35 front ends, can in cavity, slide up and down;
Rear end stopping means 32 is fixed on housing 35 rear ends;
Extend passage 33 between front end stopping means 31 and rear end stopping means 32;
Front end stopping means 31 and rear end stopping means 32 centers arrange through hole, and through hole aligns with extension passage 33;
Puncture needle assembly 2 runs through the through hole at front end stopping means 31 and rear end stopping means 32 centers;
In the time that puncture needle assembly 2 exits front end stopping means 31, front end stopping means 31 is due to action of gravity, under slide into cavity bottom, stop up and extend passage 33;
Rear end stopping means 32 departs from shielding cap 3 for preventing puncture needle assembly 2.
In the present embodiment, safe type retention needle comprises inlying catheter assembly 1, puncture needle assembly 2, shielding cap 3;
Shielding cap 3 can be arranged on inlying catheter assembly 1 by removably, makes this shielding cap 3 can conveniently depart from inlying catheter assembly 1;
After puncturing, inlying catheter assembly 1 intravasation, puncture needle assembly 2 can be extracted out from inlying catheter assembly 1.After puncture needle assembly 2 is extracted out, puncture needle assembly 2 is contained in the inside of shielding cap 3, continue to extract out puncture needle assembly 2, puncture needle assembly 2 exits front end stopping means 31, and front end stopping means 31 departs from the holding power of puncture needle assembly 2, under action of gravity, slide to cavity bottom, depart from original position, block and extend passage 33, stop puncture needle 21 oppositely to pass through.Rear end stopping means 32 can prevent that puncture needle assembly 2 from departing from shielding cap 3.
In the present embodiment, puncture needle assembly 2 exits front end stopping means 31, and front end stopping means 31 departs from the holding power of puncture needle assembly 2, under action of gravity, slides to cavity bottom, departs from original position, blocks and extends passage 33, stops puncture needle assembly 2 oppositely to pass through.Rear end stopping means 32 can prevent that puncture needle assembly 2 from departing from shielding cap 3.Continue to extract out puncture needle assembly 2; shielding cap 3 departs from inlying catheter assembly 1; related puncture needle assembly 2 shielding cap 3 together can be abandoned; thereby avoiding medical personnel to be threaded a needle stabs; because the volume of shielding cap 3 volumes all risk insurance protective case relatively of the prior art is little, so medical worker is more convenient to use.
Refer to Fig. 2, Fig. 3 and Fig. 4, an embodiment of a kind of safe type retention needle that the embodiment of the present invention provides further comprises:
Inlying catheter assembly 1 comprises:
Conduit 11, catheter block 12, batching pig 13, extension tube 14, pipe clamp 15 and joint 16;
Catheter block 12 comprises:
First interface 121, the second interface 122 and the 3rd interface 123;
Batching pig 13 is fixed in first interface 121;
First interface 121 and the second interface 122 axially connect, built-in puncture needle assembly 1;
Puncture needle 21, through batching pig 13, stretches out in outside the second interface 122 of catheter block 12;
One end jointing 16 of extension tube 14, the other end and the 3rd interface 123 are socketed;
Pipe clamp 15 is enclosed within extension tube 14;
Conduit 11 is socketed on the second interface 122, and is sleeved on puncture needle 21.
Puncture needle assembly 2 comprises:
Puncture needle 21, Paracentesis needle holder 22;
The afterbody of puncture needle 21 is fixed on Paracentesis needle holder 22;
The front end of shielding cap 3 is plugged on first interface 121, and puncture needle 21 is through front end stopping means 31, rear end stopping means 32 and extend passage 33.
First interface 121 places are provided with at least one snap ring 124;
The front end of shielding cap 3 is provided with the buckle 34 matching with snap ring 124;
Shielding cap 3 is connected with snap ring 124 by buckle 34.
Puncture needle 21 arranges at least one projection 211 above;
Front end stopping means 31 and extension passage 33 can ensure that whole puncture needle 21 passes through;
The projection 211 that rear end stopping means 32 limits on puncture needle 21 can not be passed through;
Front end stopping means 31 is after puncture needle passes through, and depart from position, blocks and extends passage 33, stops puncture needle 21 to return.
In the present embodiment, those skilled in the art can think that inlying catheter assembly 1 and puncture needle assembly 2 are prior art, and its structure is common practise.
It should be noted that, after conduit 11 intravasations, puncture needle assembly 2 can be extracted out from inlying catheter assembly 1.Then, the needle point that is drawn to puncture needle 21 when puncture needle assembly 2 is accommodated in the inside of shielding cap 3, and projection 211 is in extending passage 33.Continue to extract puncture needle assembly 2 out, puncture needle 21 all exits front end stopping means 31, and stopping means 31 is subject to action of gravity and departs from original position, blocks and extends passage 33, stops puncture needle 21 oppositely to pass through.Then, rear end stopping means 32 contact projections 211, because projection 211 can not be passed through stopping means 32, so drive stopping means 32 to move together with puncture needle 21, cause buckle 33 and snap ring 124 to depart from.Thus, puncture needle assembly 2 separates with inlying catheter assembly 1, and puncture needle assembly 2 is realized safety and abandoned.
In the present embodiment, after conduit 11 intravasations, puncture needle assembly 2 can be extracted out from inlying catheter assembly 1.Then, the needle point that is drawn to puncture needle 21 when puncture needle assembly 2 is accommodated in the inside of shielding cap 3, and projection 211 is in extending passage 33.Continue to extract puncture needle assembly 2 out, puncture needle 21 all exits front end stopping means 31, and stopping means 31 is subject to action of gravity and departs from original position, blocks and extends passage 33, stops puncture needle 21 oppositely to pass through.Then, rear end stopping means 32 contact projections 211, because projection 211 can not be passed through stopping means 32, so drive stopping means 32 to move together with puncture needle 21, cause buckle 33 and snap ring 124 to depart from.Thus; puncture needle assembly 2 separates with inlying catheter assembly 1, and puncture needle assembly 2 is realized safety and abandoned, and stabs thereby avoid medical personnel to be threaded a needle; because the volume of shielding cap 3 volumes all risk insurance protective case relatively of the prior art is little, so medical worker is more convenient to use.
Refer to Fig. 6, an embodiment of a kind of safe type retention needle that the embodiment of the present invention provides further comprises:
Shell fragment 36;
Shell fragment 36 is arranged on a side of front end stopping means 31;
Before shell fragment 36 does not trigger, in compressive state;
In the time that puncture needle assembly 2 exits front end stopping means 31, shell fragment 36 is opened, and forces front end stopping means to slide to cavity bottom, blocks and extends passage 33.
In the present embodiment, after conduit 11 intravasations, puncture needle assembly 2 can be extracted out from inlying catheter assembly 1.Then, the needle point that is drawn to puncture needle 21 when puncture needle assembly 2 is accommodated in the inside of shielding cap 3, and projection 211 is in extending passage 33.Continue to extract puncture needle assembly 2 out, puncture needle 21 all exits front end stopping means 31, and shell fragment 36 is opened, and forces front end stopping means to slide to cavity bottom, blocks and extends passage 33, stops puncture needle 21 oppositely to pass through.Continue to detach puncture needle assembly 2, rear end stopping means 32 contact projections 211, because projection 211 can not be passed through stopping means 32, so drive stopping means 32 to move together with puncture needle 21, cause buckle 33 and snap ring 124 to depart from.Thus; puncture needle assembly 2 separates with inlying catheter assembly 1, and puncture needle assembly 2 is realized safety and abandoned, and stabs thereby avoid medical personnel to be threaded a needle; because the volume of shielding cap 3 volumes all risk insurance protective case relatively of the prior art is little, so medical worker is more convenient to use.
Refer to Fig. 7, an embodiment of a kind of safe type retention needle that the embodiment of the present invention provides further comprises:
The first Magnetitum 37 and the second Magnetitum 38;
The first Magnetitum 37 is fixed on the housing 35 of front end stopping means 31 1 sides;
The second Magnetitum 38 and the first Magnetitum 37 are symmetrical arranged, and are fixed on front end stopping means 31;
In the time that puncture needle assembly 2 exits front end stopping means 31, the second Magnetitum 38 is subject to the gravitation of the first Magnetitum 37, forces front end stopping means 31 to slide to the first Magnetitum 37, stops up and extends passage 33.
In the present embodiment, after conduit 11 intravasations, puncture needle assembly 2 can be extracted out from inlying catheter assembly 1.Then, the needle point that is drawn to puncture needle 21 when puncture needle assembly 2 is accommodated in the inside of shielding cap 3, and projection 211 is in extending passage 33.Continue to extract out puncture needle assembly 2, puncture needle 21 all exits front end stopping means 31, the second Magnetitums 38 and is subject to the gravitation of the first Magnetitum 37, forces front end stopping means 31 to slide to the first Magnetitum 37, stops up and extends passage 33, stops puncture needle 21 oppositely to pass through.Continue to detach puncture needle assembly 2, rear end stopping means 32 contact projections 211, because projection 211 can not be passed through stopping means 32, so drive stopping means 32 to move together with puncture needle 21, cause buckle 33 and snap ring 124 to depart from.Thus; puncture needle assembly 2 separates with inlying catheter assembly 1, and puncture needle assembly 2 is realized safety and abandoned, and stabs thereby avoid medical personnel to be threaded a needle; because the volume of shielding cap 3 volumes all risk insurance protective case relatively of the prior art is little, so medical worker is more convenient to use.
An embodiment of a kind of the safe type retention needle above embodiment of the present invention being provided is described, and an embodiment of a kind of the shielding cap below embodiment of the present invention being provided is described:
Refer to Fig. 5, an embodiment of a kind of shielding cap provided by the invention specifically comprises:
Extend passage 33, front end stopping means 31 and rear end stopping means 32;
The front end of shielding cap 3 is by being plugged on first interface 121, and puncture needle 21 is through front end stopping means 31, rear end stopping means 32 and extend passage 33.
Housing 35 is a cylindrical, hollow housing, its inside be provided with front end stopping means 31, extend passage 33 longitudinal extensions, can ensure that whole puncture needle 21 passes through.The rear end of shielding cap 3 is provided with rear end stopping means 32.
After puncturing, conduit 11 intravasations, puncture needle assembly 2 can be extracted out from inlying catheter assembly 1.After puncture needle assembly 2 is extracted out, puncture needle 21 needle points are accommodated in the inside of shielding cap 3, continue to extract out puncture needle assembly 2, puncture needle 21 all exits front end stopping means 31, stopping means 31 departs from original position, blocks and extends passage 33, stops puncture needle 21 oppositely to pass through.
After puncturing, conduit 11 intravasations, puncture needle assembly 2 can be extracted out from inlying catheter assembly 1.After puncture needle assembly 2 is extracted out, puncture needle 21 needle points are accommodated in the inside of shielding cap 3, continue to extract out puncture needle assembly 2, puncture needle 21 all exits front end stopping means 31, stopping means 31 departs from original position, blocks and extends passage 33, stops puncture needle 21 oppositely to pass through.
An embodiment who refers to a kind of shielding cap that Fig. 6 embodiment of the present invention provides further comprises:
Shell fragment 36;
Shell fragment 36 is arranged on a side of front end stopping means 31;
Before shell fragment 36 does not trigger, in compressive state;
In the time that puncture needle assembly 2 exits front end stopping means 31, shell fragment 36 is opened, and forces front end stopping means to slide to cavity bottom, blocks and extends passage 33.
In the time that puncture needle assembly 2 exits front end stopping means 31, shell fragment 36 is opened, and forces front end stopping means to slide to cavity bottom, blocks and extends passage 33.
In the present embodiment, after conduit 11 intravasations, puncture needle assembly 2 can be extracted out from inlying catheter assembly 1.Then, the needle point that is drawn to puncture needle 21 when puncture needle assembly 2 is accommodated in the inside of shielding cap 3, and projection 211 is in extending passage 33.Continue to extract puncture needle assembly 2 out, puncture needle 21 all exits front end stopping means 31, and shell fragment 36 is opened, and forces front end stopping means to slide to cavity bottom, blocks and extends passage 33, stops puncture needle 21 oppositely to pass through.Continue to detach puncture needle assembly 2, rear end stopping means 32 contact projections 211, because projection 211 can not be passed through stopping means 32, so drive stopping means 32 to move together with puncture needle 21, cause buckle 33 and snap ring 124 to depart from.Thus; puncture needle assembly 2 separates with inlying catheter assembly 1, and puncture needle assembly 2 is realized safety and abandoned, and stabs thereby avoid medical personnel to be threaded a needle; because the volume of shielding cap 3 volumes all risk insurance protective case relatively of the prior art is little, so medical worker is more convenient to use.
An embodiment who refers to a kind of shielding cap that Fig. 7 embodiment of the present invention provides further comprises:
The first Magnetitum 37 and the second Magnetitum 38;
The first Magnetitum 37 is fixed on the housing 35 of front end stopping means 31 1 sides;
The second Magnetitum 38 and the first Magnetitum 37 are symmetrical arranged, and are fixed on front end stopping means 31;
In the time that puncture needle assembly 2 exits front end stopping means 31, the second Magnetitum 38 is subject to the gravitation of the first Magnetitum 37, forces front end stopping means 31 to slide to the first Magnetitum 37, stops up and extends passage 33.
In the present embodiment, after conduit 11 intravasations, puncture needle assembly 2 can be extracted out from inlying catheter assembly 1.Then, the needle point that is drawn to puncture needle 21 when puncture needle assembly 2 is accommodated in the inside of shielding cap 3, and projection 211 is in extending passage 33.Continue to extract out puncture needle assembly 2, puncture needle 21 all exits front end stopping means 31, the second Magnetitums 38 and is subject to the gravitation of the first Magnetitum 37, forces front end stopping means 31 to slide to the first Magnetitum 37, stops up and extends passage 33, stops puncture needle 21 oppositely to pass through.Continue to detach puncture needle assembly 2, rear end stopping means 32 contact projections 211, because projection 211 can not be passed through stopping means 32, so drive stopping means 32 to move together with puncture needle 21, cause buckle 33 and snap ring 124 to depart from.Thus; puncture needle assembly 2 separates with inlying catheter assembly 1, and puncture needle assembly 2 is realized safety and abandoned, and stabs thereby avoid medical personnel to be threaded a needle; because the volume of shielding cap 3 volumes all risk insurance protective case relatively of the prior art is little, so medical worker is more convenient to use.
The above, above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a safe type retention needle, is characterized in that, comprising:
Inlying catheter assembly (1), puncture needle assembly (2) and shielding cap (3);
Described shielding cap (3) is arranged on described inlying catheter assembly (1) by removably;
Described puncture needle assembly (2) slides and runs through described inlying catheter assembly (1) and shielding cap (3);
Described shielding cap (3) comprising:
Housing (35), extension passage (33), front end stopping means (31) and rear end stopping means (32);
Described housing (35) is cylindrical, hollow housing;
Described front end stopping means (31) is arranged on the cavity inside of described housing (35) front end, can in described cavity, slide up and down;
Described rear end stopping means (32) is fixed on described housing (35) rear end;
Described extension passage (33) is between described front end stopping means (31) and described rear end stopping means (32);
Described front end stopping means (31) and described rear end stopping means (32) center arrange through hole, and described through hole aligns with described extension passage (33);
Described puncture needle assembly (2) runs through the through hole at described front end stopping means (31) and described rear end stopping means (32) center;
In the time that described puncture needle assembly (2) exits described front end stopping means (31), described front end stopping means (31) is due to action of gravity, under slide into described cavity bottom, stop up described extension passage (33);
Described rear end stopping means (32) departs from described shielding cap (3) for preventing described puncture needle assembly (2).
2. safe type retention needle according to claim 1, is characterized in that, described shielding cap (3) also comprises:
Shell fragment (36);
Described shell fragment (36) is arranged on a side of described front end stopping means (31);
Before described shell fragment (36) does not trigger, in compressive state;
In the time that described puncture needle assembly (2) exits front end stopping means (31), shell fragment (36) is opened, and forces described front end stopping means to slide to described cavity bottom, blocks described extension passage (33).
3. safe type retention needle according to claim 1, is characterized in that, described shielding cap (3) also comprises:
The first Magnetitum (37) and the second Magnetitum (38);
Described the first Magnetitum (37) is fixed on the housing (35) of described front end stopping means (31) one sides;
Described the second Magnetitum (38) is symmetrical arranged with described the first Magnetitum (37), is fixed on described front end stopping means (31);
In the time that described puncture needle assembly (2) exits front end stopping means (31), described the second Magnetitum (38) is subject to the gravitation of described the first Magnetitum (37), force described front end stopping means (31) to slide to described the first Magnetitum (37), stop up described extension passage (33).
4. according to the safe type retention needle described in any one in claims 1 to 3, it is characterized in that,
Described inlying catheter assembly (1) comprising:
Conduit (11), catheter block (12), batching pig (13), extension tube (14), pipe clamp (15) and joint (16);
Described catheter block (12) comprising:
First interface (121), the second interface (122) and the 3rd interface (123);
Described batching pig (13) is fixed in described first interface (121);
Described first interface (121) axially connects with described the second interface (122), built-in puncture needle assembly (1);
Described puncture needle (21), through described batching pig (13), stretches out in outside second interface (122) of catheter block (12);
One end of described extension tube (14) connects described joint (16), the other end and described the 3rd interface (123) socket;
Described pipe clamp (15) is enclosed within described extension tube (14);
It is upper that described conduit (11) is socketed in described the second interface (122), and be sleeved on described puncture needle (21).
5. safe type retention needle according to claim 4, is characterized in that,
Described puncture needle assembly (2) comprising:
Puncture needle (21), Paracentesis needle holder (22);
The afterbody of described puncture needle (21) is fixed on described Paracentesis needle holder (22);
The front end of described shielding cap (3) is upper by being plugged on described first interface (121), and described puncture needle (21) is through described front end stopping means (31), described rear end stopping means (32) and described extension passage (33).
6. safe type retention needle according to claim 5, is characterized in that,
Described first interface (121) locates to be provided with at least one snap ring (124);
The front end of described shielding cap (3) is provided with the buckle (34) matching with described snap ring (124);
Described shielding cap (3) is connected with described snap ring (124) by described buckle (34).
7. safe type retention needle according to claim 6, is characterized in that,
Described puncture needle (21) arranges at least one projection (211) above;
Described front end stopping means (31) and extension passage (33) can ensure that whole puncture needle (21) passes through;
Projection (211) on described rear end stopping means (32) restriction puncture needle (21) can not be passed through;
Described front end stopping means (31) is after puncture needle passes through, and depart from position, blocks and extends passage (33), stops puncture needle (21) to return.
8. a shielding cap for safe type retention needle, is characterized in that, comprising:
Housing (35), extension passage (33), front end stopping means (31) and rear end stopping means (32);
Described front end stopping means (31) is arranged on the cavity inside of described housing (35) front end, can in described cavity, slide up and down;
Described rear end stopping means (32) is fixed on described housing (35) rear end;
Described extension passage (33) is between described front end stopping means (31) and described rear end stopping means (32);
Described front end stopping means (31) and described rear end stopping means (32) center arrange through hole, and described through hole aligns with described extension passage (33);
The puncture needle assembly (2) of described safe type retention needle runs through the through hole at described front end stopping means (31) and described rear end stopping means (32) center;
In the time that described puncture needle assembly (2) exits described front end stopping means (31), described front end stopping means (31) is due to action of gravity, under slide into described cavity bottom, stop up described extension passage (33);
Described rear end stopping means (32) departs from described shielding cap (3) for preventing described puncture needle assembly (2).
9. the shielding cap of safe type retention needle according to claim 8, is characterized in that, described shielding cap also comprises:
Shell fragment (36);
Described shell fragment (36) is arranged on a side of described front end stopping means (31);
Before described shell fragment (36) does not trigger, in compressive state;
In the time that described puncture needle assembly (2) exits front end stopping means (31), shell fragment (36) is opened, and forces described front end stopping means to slide to described cavity bottom, blocks described extension passage (33).
10. the shielding cap of safe type retention needle according to claim 8, is characterized in that, described shielding cap also comprises:
The first Magnetitum (37) and the second Magnetitum (38);
Described the first Magnetitum (37) is fixed on the housing (35) of described front end stopping means (31) one sides;
Described the second Magnetitum (38) is symmetrical arranged with described the first Magnetitum (37), is fixed on described front end stopping means (31);
In the time that described puncture needle assembly (2) exits front end stopping means (31), described the second Magnetitum (38) is subject to the gravitation of described the first Magnetitum (37), force described front end stopping means (31) to slide to described the first Magnetitum (37), stop up described extension passage (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310003103.9A CN103007385B (en) | 2013-01-05 | 2013-01-05 | Secure type indwelling and shielding cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310003103.9A CN103007385B (en) | 2013-01-05 | 2013-01-05 | Secure type indwelling and shielding cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103007385A CN103007385A (en) | 2013-04-03 |
| CN103007385B true CN103007385B (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310003103.9A Active CN103007385B (en) | 2013-01-05 | 2013-01-05 | Secure type indwelling and shielding cap |
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| Country | Link |
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| CN (1) | CN103007385B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2651076C2 (en) * | 2013-08-29 | 2018-04-18 | Импрув Медикал Инструментс (Хунань) Ко., Лтд. | Device for puncturing heparin cap and vascular access system |
| CN103691031A (en) * | 2013-12-16 | 2014-04-02 | 苏州林华医疗器械有限公司 | Safety venous indwelling needle |
| CN104189975A (en) * | 2014-09-23 | 2014-12-10 | 广州阳普医疗科技股份有限公司 | Remaining needle with quick blood returning function |
| WO2019019169A1 (en) * | 2017-07-28 | 2019-01-31 | 福建省百仕韦医用高分子股份有限公司 | Indwelling needle having indwelling air cavity |
| CN107335107A (en) * | 2017-08-15 | 2017-11-10 | 西藏多欣医疗器械制造有限公司 | A kind of magnetic control self-sealing venous detaining needle |
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| CN201244280Y (en) * | 2008-08-28 | 2009-05-27 | 江西三鑫医疗器械集团有限公司 | Safety retaining needle |
| CN201361314Y (en) * | 2009-02-24 | 2009-12-16 | 佛山市爱迪医疗器械有限公司 | Retaining needle capable of discharging gas automatically |
| CN201783059U (en) * | 2010-09-03 | 2011-04-06 | 柏保东 | Safety venous retention needle |
| US8282609B2 (en) * | 2003-02-11 | 2012-10-09 | Salvus Technology Limited | Safety needle |
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| US8282609B2 (en) * | 2003-02-11 | 2012-10-09 | Salvus Technology Limited | Safety needle |
| CN201244280Y (en) * | 2008-08-28 | 2009-05-27 | 江西三鑫医疗器械集团有限公司 | Safety retaining needle |
| CN201361314Y (en) * | 2009-02-24 | 2009-12-16 | 佛山市爱迪医疗器械有限公司 | Retaining needle capable of discharging gas automatically |
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| Publication number | Publication date |
|---|---|
| CN103007385A (en) | 2013-04-03 |
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Application publication date: 20130403 Assignee: Jiangsu Yang Pu medical science and technology company limited Assignor: Guangzhou Improve Medical Co., Ltd. Contract record no.: 2015320000140 Denomination of invention: Secure type indwelling and shielding cap Granted publication date: 20140716 License type: Exclusive License Record date: 20150407 |
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Effective date of registration: 20190118 Address after: 510000 Kaiyuan Avenue 102, Science City, Guangzhou Economic and Technological Development Zone, Guangdong Province Co-patentee after: Sunny medical (Hunan) Co., Ltd. Patentee after: Guangzhou Improve Medical Co., Ltd. Address before: 510000 Kaiyuan Avenue 102, Science City, Guangzhou Economic and Technological Development Zone, Guangdong Province Patentee before: Guangzhou Improve Medical Co., Ltd. |
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Address after: 519031 office 2320, No. 3000, Huandao East Road, Hengqin new area, Zhuhai, Guangdong Patentee after: Yangpu Medical Technology Co.,Ltd. Patentee after: Yangpu medical (Hunan) Co., Ltd Address before: 510000 Kaiyuan Avenue 102, Science City, Guangzhou Economic and Technological Development Zone, Guangdong Province Patentee before: GUANGZHOU IMPROVE MEDICAL TECHNOLOGY Co.,Ltd. Patentee before: Yangpu medical (Hunan) Co., Ltd |