CN111282083A - Puncture-proof intravenous infusion needle and needle cap thereof - Google Patents
Puncture-proof intravenous infusion needle and needle cap thereof Download PDFInfo
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- CN111282083A CN111282083A CN202010151106.7A CN202010151106A CN111282083A CN 111282083 A CN111282083 A CN 111282083A CN 202010151106 A CN202010151106 A CN 202010151106A CN 111282083 A CN111282083 A CN 111282083A
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- 238000001802 infusion Methods 0.000 title claims abstract description 65
- 238000001990 intravenous administration Methods 0.000 title claims abstract description 40
- 206010052428 Wound Diseases 0.000 claims description 5
- 230000000474 nursing effect Effects 0.000 description 6
- 208000012266 Needlestick injury Diseases 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- 238000001467 acupuncture Methods 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 239000002906 medical waste Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 208000035049 Blood-Borne Infections Diseases 0.000 description 1
- 206010069803 Injury associated with device Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
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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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M2005/1583—Needle extractors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M2005/1585—Needle inserters
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a puncture-proof intravenous infusion needle and a needle cap thereof, comprising a needle head, a needle cap and a needle seat integrally connected with the needle head, wherein the needle seat is positioned at the tail end of the needle head; in order to ensure that the needle head is always connected with the needle cap, the step of sleeving the needle cap is omitted, so that a thorn-avoiding linkage structure is arranged between the needle head and the needle cap, and the needle cap is sleeved on the needle head and can be in front-back sliding connection with the needle base.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an anti-puncture intravenous infusion needle and a needle cap thereof.
Background
The intravenous infusion technology is built in the 20 th century to form a set of complete system, and becomes one of the most common and most direct effective clinical treatment means. Intravenous infusion is a method of infusing a large amount of sterile liquid, electrolyte and medicine into the body from veins by utilizing the principles of atmospheric pressure and hydrostatic pressure. The venous transfusion is completed by adopting a venous transfusion device, the venous transfusion device is generally formed by connecting eight parts, such as a venous needle or an injection needle, a needle head protective cap, a transfusion hose, a liquid medicine filter, a flow rate regulator, a drip cup, a bottle plug puncture outfit, an air filter and the like, and the partial transfusion device also comprises an injection piece, a medicine adding port and the like. As shown in fig. 1 and 2, the structure of the existing intravenous infusion needle comprises a needle head, a plastic needle seat, an infusion tube communicated with the needle seat and a needle cap which is sleeved on the needle head and prevents puncture; however, the existing intravenous infusion needle has the disadvantage of common needle stick injuries in use, for example, 100 clinical nurses questionnaire survey statistical analysis shows that 98 cases of 100 nurses have accidental needle stick injuries in one year according to the abstract of the 21 st stage of 2014 in Chinese practical medicine; in the nursing research, 16 th 2005 and in numerous medical periodicals, hospital surveys show that the condition of needle stick injuries of every clinical nurse is relatively frequent; after the puncture wound, the psychological stress of medical care personnel is often large, and the potential risk of causing blood-borne infection is getting worse. The infection management academic annual meeting of the fourteenth national hospital of the Chinese Hospital Association, "investigation and analysis of needle-prick injuries by clinical Nursers" Hospital of the first people in Jiujiang City, Jiangxi province, the Hospital carries out retrospective questionnaire survey on 210 clinical nurses to know the occurrence condition of the needle-prick injuries by the nurses; the number of nurses in clinical front-line work in all disease areas, operating rooms, emergency centers, outpatients and the like of the hospital is 210, wherein 48 nurses with the nursing age of less than 5 years, 50 nurses with the nursing age of 6-10 years, 42 nurses with the nursing age of 11-16 years, 38 nurses with the nursing age of 16-20 years and 32 nurses with the nursing age of more than 20 years. The investigation result shows that the number of the needle pricks among the investigated nurses is 204, accounts for 97.14 percent of the total number of the investigated nurses, and the total number of the needle pricks is 378, and 1.8 times are generated. Wherein, the proportion of patients who have 1 time of acupuncture is 32.3 percent, the proportion of patients who have 2 to 3 times of acupuncture is 48.3 percent, and the proportion of patients who have more than 3 times of acupuncture is 19.4 percent. The investigation result shows that the nurse is most likely to have needle stick injury in the operation process, namely, the needle back cap is 20.37%. Nurses are used to sleeve the needle-back cap after operation, and particularly when the work is busy, the needle-back of the needle-back cap is promoted to cause most needle-stick injuries. The american centers for disease management and prevention (CDC) reported that needle stick injuries caused by back-capped needle caps accounted for 10% -25%, as early as the american CDC proposed in 1987: and the back-sleeve needle cap is definitely forbidden in the medical care operation regulations in China; but the needle cap is not sleeved back, so that the needle head is exposed to the outside and has puncture risk; particularly, after the infusion is finished, the medical staff often pricks other people or oneself because the medical staff sends the intravenous infusion needle to a medical waste room and the like in the process of treating a sharps box.
In conclusion, the existing intravenous infusion needle has the structure that a nurse pulls out the needle head after infusion due to the separation of the needle cap and the needle head, and the proportion of puncture wounds in the needle cap is promoted to be 20.37% of the total puncture wounds; it is also common for the needle to be exposed and cause a puncture wound to the patient or himself during transport to the medical preparation room.
Disclosure of Invention
The invention mainly solves the technical problem that the existing intravenous infusion needle is easy to stab medical care personnel and patients, thereby providing the puncture-proof intravenous infusion needle and the needle cap thereof, which have simple structure, are safe and effectively avoid puncture.
The technical scheme adopted by the invention for solving the problems is as follows: an anti-puncture intravenous infusion needle and a needle cap thereof comprise a needle head, a needle cap and a needle base integrally connected with the needle head, wherein the needle base is positioned at the tail end of the needle head; in order to ensure that the needle head is always connected with the needle cap, the step of sleeving the needle cap is omitted, so that a thorn-avoiding linkage structure is arranged between the needle head and the needle cap, and the needle cap is sleeved on the needle head and can be in front-back sliding connection with the needle base.
Preferably, the thorn-avoiding linkage structure comprises a slide way and a guide slide block which are arranged on the needle cap, the guide slide block and the needle base are integrally arranged at one end of the needle base, and the slide way is connected with the guide slide block in a sliding manner; the guide sliding block is in clearance fit with the slide way, and the guide sliding block and the needle base form a 90-degree right angle; the open end of slide is equipped with the direction mouth, and the direction mouth has the slide guide effect, and the needle cap of being convenient for slides backward fast.
Preferably, the front section of the needle cap is provided with a closed section for shielding the needle head and preventing the needle head from being exposed to avoid stabbing medical staff; the length of the closed section is at least more than 4 mm.
Preferably, the front section of the needle seat is a fixed section, and the fixed section is equal to the length of the closing section on the needle cap and is matched with the closing section on the needle cap.
Preferably, the tail part of the needle seat is provided with a connecting section for connecting with an infusion tube, the outer diameter of the connecting section is smaller than that of the fixing section, the infusion tube is sleeved on the connecting section, in order to ensure that the needle cap smoothly slides to the tail end of the needle seat through the slideway and avoid being clamped by the infusion tube, the outer diameter of the infusion tube is at least 0.1mm smaller than that of the fixing section; the lengths of the fixing section, the connecting section and the guide sliding block of the needle base are the same.
Preferably, the thorn-avoiding linkage structure comprises a sliding rail arranged on the needle cap and a guide sliding block A arranged at one end of the needle base, and the needle cap is connected with the guide sliding block A in a sliding mode.
Preferably, the slide rail comprises a slide opening and slide strips, the slide opening is formed in the wall of the needle cap, the slide opening is of a rectangular structure, and the slide strips are arranged on the left side and the right side of the slide opening; the upper part and the lower part of the guide slide block A are respectively provided with a sliding groove, and the sliding strips are embedded in the sliding grooves and are matched with each other; therefore, the needle cap is in sliding connection with the guide sliding block A, the sliding strips are embedded in the sliding grooves and are matched with each other, the needle cap is ensured not to slip off from the guide sliding block A, and the needle head is prevented from being exposed outwards.
Preferably, the length of the sliding rail arranged on the needle cap is equal to the total length of the puncture-proof intravenous infusion needle; thus ensuring that the needle cap is always connected with the intravenous infusion needle to avoid the phenomenon of needle head exposure caused by slippage.
Preferably, the needle cap is made of PVC, the PVC which is the same as the material of the infusion tube has good flexibility, the needle cap can conveniently slide back and forth, and the needle cap is prevented from being clamped with the infusion tube.
Compared with the prior art, the invention has the advantages that due to the adoption of the technical scheme, the invention has the following advantages: the needle cap is in sliding connection with the guide sliding block of the needle stand through the arrangement of the puncture-preventing linkage structure between the puncture-preventing intravenous infusion needle and the needle cap, so that the needle cap is ensured to envelop the puncture-preventing intravenous infusion needle all the time, and the needle cap is driven by the sliding way to slide up and down along the guide sliding block according to the use requirement, so that the needle head is in an infusion injection state or a cap covering state, the direction of the back-sleeved needle cap is opposite to the direction of the needle point, and the danger that medical personnel are punctured by facing the needle point and the back-sleeved needle cap is completely avoided.
Drawings
FIG. 1 is a schematic perspective view of a conventional intravenous infusion needle;
FIG. 2 is a schematic exploded view of a conventional intravenous infusion needle;
FIG. 3 is a schematic perspective view of a first embodiment of the present invention;
FIG. 4 is a schematic perspective exploded view of a first embodiment of the present invention;
FIG. 5 is a front view of a needle cap of a first embodiment of the invention;
FIG. 6 is a schematic perspective view of a puncture-proof IV needle according to a first embodiment of the present invention;
FIG. 7 is a schematic perspective view of the second embodiment;
FIG. 8 is an exploded perspective view of the second embodiment;
FIG. 9 is a front view of the needle cap of the second embodiment;
FIG. 10 is an enlarged schematic view of the direction A of FIG. 9;
FIG. 11 is a front view of the puncture resistant IV needle of the second embodiment;
FIG. 12 is a top view of the puncture resistant IV needle of the second embodiment;
FIG. 13 is an enlarged view of the B direction of FIG. 12;
FIG. 14 is one of the usage diagrams of the first embodiment of the invention;
FIG. 15 is a second schematic diagram illustrating the use of the first embodiment of the present invention;
shown in the figure: 1. the intravenous infusion needle comprises an existing intravenous infusion needle body, a needle head, a needle seat, a needle cap, a puncture-proof intravenous infusion needle body, a needle head, a needle seat, a guide sliding block 2b0., a connecting section 2b1, a fixing section 2b2., a guide sliding block 2b3. A, a sliding groove 2b4., a needle cap 2c, a sealing section 2c0., a sliding channel 2c1, a guide opening 2c2., a sliding rail 2c3., a sliding opening 2c4., a sliding strip 2c5. and an infusion tube 3.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
The first embodiment is as follows: an intravenous infusion needle and a needle cap thereof for preventing puncture, as shown in figures 3 and 4, comprises a needle head 2a, a needle cap 2c and a needle seat 2b which is integrally connected with the needle head 2a, wherein the needle seat 2b is positioned at the tail end of the needle head 2 a; in order to ensure that the needle head 2a is always connected with the needle cap 2c, the step of sleeving the needle cap 2c is omitted, so that a thorn-avoiding linkage structure is arranged between the needle head 2a and the needle cap 2c, and the needle cap 2c is sleeved on the needle head 2a and can be connected with the needle seat 2b in a front-back sliding manner; specifically, as shown in fig. 4, the thorn-avoiding linkage structure comprises a slide way 2c1 and a guide slide block 2b0 which are arranged on the needle cap 2c, the guide slide block 2b0 and the needle base 2b are integrally arranged at one end of the needle base 2b, and the slide way 2c1 is connected with the guide slide block 2b0 in a sliding manner; the guide sliding block 2b0 is in clearance fit with the slideway 2c1, and the guide sliding block 2b0 and the needle seat 2b form a 90-degree right angle; as shown in fig. 5, the open end of the slide way 2c1 is provided with a guide opening 2c2, the guide opening 2c2 has a sliding guide function, so that the needle cap 2c can slide backwards quickly, and the front section of the needle cap 2c is provided with a closed section 2c0 for shielding the needle head 2a and preventing the needle head from being exposed to prevent the medical staff from being punctured; therefore, the length of the closed section 2c0 is set to be at least more than 4mm, so that the needle 2a can be shielded to reach a safe range; as shown in fig. 5 and 6, the front section of the needle holder 2b is set as a fixed section 2b2, and can be sleeved with the closed section 2c2 when the needle cap 2c retreats, meanwhile, the fixed section 2b2 and the closed section 2c0 on the needle cap 2c have the same length and are matched with each other, the tail part of the needle holder 2b is provided with a connecting section 2b1 for connecting with the infusion tube 3, the outer diameter of the connecting section 2b1 is smaller than the outer diameter of the fixed section 2b2, the infusion tube 3 is sleeved on the connecting section 2b1, in order to ensure that the needle cap 2c smoothly slides to the tail end of the needle holder 2b through the slideway 2c1 and avoid being blocked by the infusion tube 3, the outer diameter of the infusion tube 3 is at least 38725 mm smaller than the outer diameter of the fixed section 2b 2; the lengths of the fixed section 2b2 and the connecting section 2b1 of the needle seat 2b and the length of the guide sliding block 2b0 are the same; the needle cap 2c is made of PVC, and the PVC with the same material as the infusion tube 3 has good flexibility, so that the needle cap 2c can slide back and forth conveniently, and the needle cap and the infusion tube 3 are prevented from being clamped with each other.
The working principle of the first embodiment of the invention is as follows: as shown in fig. 14 and 15, when infusion injection is required, a medical worker holds the needle cap with a hand to guide the needle cap through the guide port and slide in the direction of the downward infusion tube, as shown in fig. 15, the needle cap slides downward smoothly until the closed section of the needle cap is stopped at the top end of the slide way by utilizing the sliding connection of the slide way and the guide slide block, and meanwhile, the closed section of the needle cap and the fixing section of the needle base are mutually sleeved and fixed, so that the needle cap and the needle base are prevented from sliding during infusion; the operation avoids the danger that the needle cap is accidentally scratched by the needle point at the moment when the medical staff takes off the needle cap outwards; when the transfusion is finished, the needle cap is held by hand and slides upwards along the guide slide block along the slide way towards the needle point direction until the closed section of the needle cap completely covers the needle point by at least 4mm as shown in fig. 14 and 15; the direction of the back-sleeved needle cap is opposite to the direction of the needle point, so that the danger that the back-sleeved needle cap is punctured against the needle point in the past is avoided; meanwhile, the needle cap is sleeved, so that some people who subsequently treat medical waste can take safety protection.
The second embodiment is as follows: as shown in fig. 7 and 8, a puncture-proof iv needle and its cap are different from the embodiment in that: the thorn-avoiding linkage structure comprises a sliding rail 2c3 arranged on the needle cap 2c and a guide sliding block A2b3 arranged at one end of the needle seat 2b, the needle cap 2c is connected with the guide sliding block A2b3 in a sliding mode, specifically, as shown in fig. 9 and fig. 10, the sliding rail 2c3 comprises a sliding opening 2c4 and a sliding strip 2c5, the sliding opening 2c4 is arranged on the wall of the needle cap 2c, the sliding opening 2c4 starts from the bottom of the needle cap 2c and ends at a closed section 2c0 in a rectangular structure, and the sliding strip 2c5 is arranged on the left side and the right side of the sliding opening 2c4 and protrudes inwards; as shown in fig. 11, 12 and 13, the upper and lower parts of the guide slider A2b3 are respectively provided with a sliding groove 2b4, and the sliding strips 2c5 are embedded in the sliding grooves 2b4 and are matched with each other; therefore, the needle cap 2c is connected with the guide sliding block A2b3 in a sliding manner, the sliding strip 2c5 is embedded in the sliding groove 2b4 and matched with each other, the needle cap 2c cannot slip off from the guide sliding block A2b3 to avoid the needle head 2a from being exposed outwards, the length of the sliding rail 2c3 arranged on the needle cap 2c is equal to the total length of the puncture-proof intravenous infusion needle, and the needle cap 2c is always connected with the intravenous infusion needle to avoid the phenomenon that the needle head 2a is exposed due to slipping off; other structures and working principles are the same as those of the first embodiment and are not described in detail herein.
The use principle of the invention is as follows: as shown in fig. 7 and 8, when infusion and injection are needed, a medical worker pinches the needle cap by hand and is in sliding connection with the guide sliding block a through the sliding rail, so that the needle cap slides in the direction of the downward infusion tube, as shown in fig. 7 and 8, the sliding strip is engaged with the sliding groove, so that the needle cap longitudinally slides downwards along the direction of the sliding groove until reaching the closed section of the needle cap at the top end of the sliding groove, and meanwhile, the closed section of the needle cap and the fixed section of the needle base are mutually sleeved and fixed, so that the needle cap and the needle base are prevented from sliding during infusion; the operation avoids the danger that the needle cap is accidentally scratched by the needle point at the moment when the medical staff takes off the needle cap outwards; when the transfusion is finished, the sliding rail which holds the needle cap by hand slides upwards along the sliding groove towards the needlepoint direction until the closed section of the needle cap completely covers the needlepoint and exceeds 4mm at least, and the length of the sliding rail arranged on the needle cap is equal to the total length of the puncture-proof intravenous transfusion needle; therefore, the needle cap is always connected with the intravenous infusion needle to avoid the phenomenon that the needle head is exposed due to slipping, the needle cap is always enveloped with the needle seat of the puncture-proof intravenous infusion needle no matter in a cap-off state or a cap-sleeving state, the needle cap is prevented from being separated from the intravenous infusion needle to cause puncture injury, the direction of the back-sleeved needle cap is opposite to the direction of the needle point, and the danger that the needle head is punctured against the back-sleeved needle cap in the past is avoided; the sliding rail of the needle cap and the guide sliding block A are matched with the sliding groove through the sliding strip, so that the needle cap is always in sliding connection with the puncture-proof intravenous infusion needle in a linkage state, the needle cap is stable and stable, the needle cap slides up and down more smoothly, the needle cap has guidance and safety, and the hidden danger that a needle head punctures a person is completely avoided; meanwhile, the needle cap is sleeved, so that some people who subsequently treat medical waste can take safety protection.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. An intravenous infusion needle and a needle cap thereof for preventing puncture wound are characterized in that: the needle comprises a needle head (2a), a needle cap (2c) and a needle seat (2b) which is integrally connected with the needle head (2a), wherein the needle seat (2b) is positioned at the tail end of the needle head (2 a); be provided with between syringe needle (2a) and needle cap (2c) and avoid thorn linkage structure, needle cap (2c) cover on syringe needle (2a) and with needle file (2b) sliding connection.
2. The intravenous infusion needle and the needle cap thereof capable of preventing puncture according to claim 1 are characterized in that: the thorn-avoiding linkage structure comprises a slide way (2c1) and a guide slide block (2b0), wherein the slide way (2c1) and the guide slide block (2b0) are arranged on the needle cap (2c), the guide slide block (2b0) and the needle base (2b) are integrally arranged at one end of the needle base (2b), and the slide way (2c1) is in sliding connection with the guide slide block (2b 0); the guide sliding block (2b0) is in clearance fit with the slide way (2c1), and the guide sliding block (2b0) and the needle seat (2b) form a 90-degree right angle; the open end of the slideway (2c1) is provided with a guide port (2c 2).
3. The anti-puncture intravenous infusion needle and the needle cap thereof according to claim 2, characterized in that: the front section of the needle cap (2c) is provided with a closed section (2c 0); the length of the closed section (2c0) is at least greater than 4 mm.
4. The intravenous infusion needle and the needle cap thereof capable of preventing puncture according to claim 3 are characterized in that: the front section of the needle seat (2b) is set as a fixed section (2b2), and the fixed section (2b2) is equal to the length of the closing section (2c0) on the needle cap (2c) and is matched with the needle cap.
5. The anti-puncture intravenous infusion needle and the needle cap thereof according to claim 4, wherein: the tail of the needle seat (2b) is provided with a connecting section (2b1) for connecting with an infusion tube (3), the outer diameter of the connecting section (2b1) is smaller than that of the fixing section (2b2), the infusion tube (3) is sleeved on the connecting section (2b1), and the outer diameter of the infusion tube (3) is at least 0.1mm smaller than that of the fixing section (2b 2); the lengths of the fixing section (2b2) and the connecting section (2b1) of the needle seat (2b) and the length of the guide slide block (2b0) are the same.
6. The intravenous infusion needle and the needle cap thereof capable of preventing puncture according to claim 1 are characterized in that: the thorn-avoiding linkage structure comprises a sliding rail (2c3) arranged on the needle cap (2c) and a guide sliding block A (2b3) arranged at one end of the needle base (2b), and the needle cap (2c) is in sliding connection with the guide sliding block A (2b 3).
7. The intravenous infusion needle and the needle cap thereof capable of preventing puncture according to claim 6, characterized in that: the sliding rail (2c3) comprises a sliding opening (2c4) and a sliding strip (2c5), the sliding opening (2c4) is formed in the wall of the needle cap (2c), the sliding opening (2c4) is of a rectangular structure, and the sliding strip (2c5) is arranged on the left side and the right side of the sliding opening (2c 4); the upper part and the lower part of the guide sliding block A (2b3) are respectively provided with a sliding groove (2b4), and the sliding strips (2c5) are embedded in the sliding grooves (2b4) and are matched with each other; the needle cap (2c) is connected with the guide slide block A (2b3) in a sliding way, and the slide bar (2c5) is embedded in the slide groove (2b4) and is matched with each other.
8. The anti-puncture intravenous infusion needle and the needle cap thereof according to claim 7, wherein: the length of a slide rail (2c3) arranged on the needle cap (2c) is equal to the total length of the puncture-proof intravenous infusion needle (2).
9. The intravenous infusion needle and the needle cap thereof capable of preventing puncture according to claim 1 are characterized in that: the needle cap (2c) is made of PVC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010151106.7A CN111282083A (en) | 2020-03-06 | 2020-03-06 | Puncture-proof intravenous infusion needle and needle cap thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010151106.7A CN111282083A (en) | 2020-03-06 | 2020-03-06 | Puncture-proof intravenous infusion needle and needle cap thereof |
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| CN111282083A true CN111282083A (en) | 2020-06-16 |
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| CN202010151106.7A Pending CN111282083A (en) | 2020-03-06 | 2020-03-06 | Puncture-proof intravenous infusion needle and needle cap thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112043353A (en) * | 2020-08-13 | 2020-12-08 | 厦门大学附属中山医院 | PICC piercing depth |
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2020
- 2020-03-06 CN CN202010151106.7A patent/CN111282083A/en active Pending
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| US20140200522A1 (en) * | 2013-01-11 | 2014-07-17 | Sunwell Global Limited | Safe vein detained needle |
| CN204521810U (en) * | 2015-02-06 | 2015-08-05 | 吴妮 | Disposable safe venous needle |
| CN209500420U (en) * | 2018-11-20 | 2019-10-18 | 广州军区广州总医院 | A kind of anti-needle stabs infusion apparatus |
| CN212282400U (en) * | 2020-03-06 | 2021-01-05 | 张亚亚 | Puncture-proof intravenous infusion needle and needle cap thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112043353A (en) * | 2020-08-13 | 2020-12-08 | 厦门大学附属中山医院 | PICC piercing depth |
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