CN109498897B - Anti-blocking retention needle - Google Patents
Anti-blocking retention needle Download PDFInfo
- Publication number
- CN109498897B CN109498897B CN201811527403.6A CN201811527403A CN109498897B CN 109498897 B CN109498897 B CN 109498897B CN 201811527403 A CN201811527403 A CN 201811527403A CN 109498897 B CN109498897 B CN 109498897B
- Authority
- CN
- China
- Prior art keywords
- tube
- needle
- seat
- blocking
- catheter
- 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.)
- Active
Links
- 230000014759 maintenance of location Effects 0.000 title description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 230000035515 penetration Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 11
- 239000008280 blood Substances 0.000 abstract description 7
- 210000004369 blood Anatomy 0.000 abstract description 7
- 210000004204 blood vessel Anatomy 0.000 description 7
- 238000001802 infusion Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 1
- 238000001467 acupuncture Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- 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
- A61M2005/1586—Holding accessories for holding infusion needles on the body
Landscapes
- 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 provides an anti-blocking indwelling needle, which comprises: needle tube, plugging tube, pushing tube and catheter seat; the needle tube is arranged at one end of the catheter seat and is communicated with the catheter seat, the plugging tube is arranged in the catheter seat, the outer diameter of the plugging tube corresponds to the diameter of the needle tube, one end of the plugging tube selectively stretches into the needle tube, and one end of the pushing tube stretches into the catheter seat from the other end of the catheter seat and is connected with the other end of the plugging tube. The anti-blocking indwelling needle provided by the invention can extend into the needle tube when not in transfusion, so as to play a role in blocking the needle tube, and prevent blood from flowing into the inverted needle tube to cause blocking of the needle tube.
Description
Technical Field
The invention relates to an indwelling needle, in particular to an anti-blocking indwelling needle.
Background
The indwelling needle includes a flexible catheter/cannula that can be indwelled within a blood vessel, and a stainless steel puncture guiding needle core. When in use, the catheter and the needle core are punctured into the blood vessel together, and after the catheter completely enters the blood vessel, the needle core is withdrawn, and only the soft catheter is remained in the blood vessel, so that transfusion treatment is carried out. The use of the indwelling needle can reduce the pain of patients caused by repeated venipuncture, is convenient for clinical medication, can rescue patients suffering from emergency and critical diseases, can reduce the workload of nurses and can reduce the pain of patients.
However, when the conventional indwelling needle is not used for infusion, blood of a patient easily flows back into the indwelling needle, and the indwelling needle is easily blocked. In addition, blood remaining in the indwelling needle is likely to coagulate, and the coagulated blood is likely to enter a blood vessel to form thrombus during the next infusion, which is harmful to the health of the human body.
Disclosure of Invention
The invention aims to provide an anti-blocking indwelling needle, which overcomes the defects in the prior art.
To achieve the above object, the present invention provides an anti-blocking indwelling needle comprising: needle tube, plugging tube, pushing tube and catheter seat;
The needle tube is arranged at one end of the catheter seat and is communicated with the catheter seat, the plugging tube is arranged in the catheter seat, the outer diameter of the plugging tube corresponds to the diameter of the needle tube, one end of the plugging tube selectively stretches into the needle tube, and one end of the pushing tube stretches into the catheter seat from the other end of the catheter seat and is connected with the other end of the plugging tube.
As an improvement of the anti-blocking indwelling needle, the needle tube and the blocking tube are made of FEP.
In the improvement of the anti-blocking indwelling needle, a piston column is further arranged in the catheter seat, and one end of the blocking tube selectively extends into the needle tube through the piston column.
As an improvement of the anti-blocking retention needle, a gasket is further arranged between the piston column and one end of the pushing tube.
As an improvement of the anti-blocking indwelling needle, a gasket arranged in an interference manner is arranged between the pushing tube and the catheter seat.
As an improvement of the anti-blocking retention needle, the other end of the catheter seat is also sleeved with a limiting ring, and one end of the push tube is provided with a bulge which is propped against the limiting ring.
As an improvement of the anti-blocking indwelling needle of the present invention, the anti-blocking indwelling needle further comprises: the needle comprises a steel needle, an elastic sheet, a clamping seat, a limiting tube and a needle penetration preventing needle seat, wherein one end of the pushing tube penetrates through the limiting tube and extends into the guide tube seat from the other end of the guide tube seat, the clamping seat is arranged at the other end of the pushing tube, the elastic sheet is arranged in the clamping seat, one end of the steel needle sequentially penetrates through the elastic sheet, the pushing tube and the guide tube seat and extends into the needle tube, a limiting protrusion is arranged on the side wall of one end of the steel needle, and the needle penetration preventing needle seat is arranged at the other end of the steel needle.
As an improvement of the anti-blocking retention needle, the clamping seat is provided with a clamping groove, the end part of the elastic sheet is propped against the steel needle, and a buckle clamped into the clamping groove is arranged on the elastic sheet adjacent to the end part.
As an improvement of the anti-blocking retention needle, the bayonet of the clamping groove is closed by a clamping cover.
As an improvement of the anti-blocking indwelling needle, the needle tube is accommodated in the protective cap.
Compared with the prior art, the invention has the beneficial effects that: the anti-blocking indwelling needle provided by the invention can extend into the needle tube when not in transfusion, so as to play a role in blocking the needle tube, and prevent blood from flowing into the inverted needle tube to cause blocking of the needle tube.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic plan view of an embodiment of an anti-occlusion indwelling needle of the present invention;
FIG. 2 is a schematic plan view of another embodiment of an anti-occlusion needle of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the embodiments shown in the drawings, but it should be understood that the embodiments are not limited to the present invention, and functional, method, or structural equivalents and alternatives according to the embodiments are within the scope of protection of the present invention by those skilled in the art.
As shown in fig. 1, the anti-blocking indwelling needle of the present invention includes: needle tubing 3, shutoff pipe 8, push tube 11, pipe seat 5.
The needle tube 3 is placed in a blood vessel of a human body to input a liquid medicine, and in particular, the needle tube 3 is mounted at one end of the catheter seat 5 through a metal wedge 4 and is communicated with the catheter seat 5. The catheter holder 5 has a branch pipe so that the medical fluid introduced into the catheter holder 5 from the branch pipe is introduced into the human body through the needle tube 3. In order to protect the needle tube 3, the needle tube 3 is accommodated in a cap 2, and an end of the cap is fitted over one end of the catheter holder 5.
The blocking tube 8 is used for extending into the needle tube 3 when not in transfusion, and plays a role in blocking the needle tube 3, so that blood is prevented from flowing into the inverted needle tube 3, and the needle tube 3 is prevented from being blocked. Specifically, the plugging tube 8 is located in the catheter seat 5, the outer diameter of the plugging tube 8 corresponds to the diameter of the needle tube 3, and one end of the plugging tube 8 selectively extends into the needle tube 3 to perform plugging function. Preferably, the material of the needle tube 3 and the plugging tube 8 is FEP.
The pushing tube 11 is used for pushing the plugging tube 8 into the needle tube 3. Specifically, one end of the push tube 11 extends into the catheter holder 5 from the other end of the catheter holder 5, and is connected to the other end of the plugging tube 8. Thus, when not in infusion, a force is applied to the push tube 11, which can drive the occlusion tube 8 into the needle tube 3. In addition, in order to ensure the tightness between the push tube 11 and the catheter seat 5, a gasket 9 is provided between the push tube 11 and the catheter seat 5 in an interference manner.
Further, in order to prevent the push tube 11 from being pulled out of the catheter holder 5 in the axial direction, the other end of the catheter holder 5 is further sleeved with a limiting ring 12, and correspondingly, one end of the push tube 11 is provided with a protrusion abutting against the limiting ring 12.
A piston column 6 is further arranged in the catheter seat 5, and one end of the plugging tube 8 selectively extends into the needle tube 3 through the piston column 6. Meanwhile, a gasket 7 is further arranged between the piston column 6 and one end of the push tube 11.
In addition, the anti-blocking indwelling needle also has the function of preventing needling.
As shown in fig. 2, specifically, the anti-blocking indwelling needle further includes: steel needle 1, shell fragment 16, cassette 14, spacing pipe 10 and prevent acupuncture needle file 13.
Specifically, one end of the push tube 11 passes through the limiting tube 10 and extends into the catheter holder 5 from the other end of the catheter holder 5, the clamping holder 14 is mounted at the other end of the push tube 11, and the elastic sheet 16 is located in the clamping holder 14. One end of the steel needle 1 sequentially penetrates through the elastic sheet 16, the push tube 11 and the catheter seat 5 and stretches into the needle tube 3, correspondingly, a through hole for the steel needle 1 to penetrate through is formed in the elastic sheet 16, and meanwhile, a limiting protrusion propped against the edge of the through hole is arranged on the side wall of one end of the steel needle 1. The anti-needling needle stand 13 is arranged at the other end of the steel needle 1.
Thus, after the needle tube 3 is penetrated into the skin of the human body by the steel needle 1, the steel needle 1 needs to be pulled out, and the needle tube 3 is left in the blood vessel of the human body. When the steel needle 1 moves to the through hole, the limiting protrusion can prevent the steel needle 1 from falling out of the elastic sheet 16, so that the needle point of the steel needle 1 is remained in the elastic sheet 16, and the needle point of the steel needle 1 is prevented from stabbing medical staff.
Further, in order to pull out the steel needle 1 together with the elastic piece 16 sleeved on the needle tip of the steel needle, a clamping groove is formed in the clamping seat 14, the end portion of the elastic piece 16 abuts against the steel needle 1, and a buckle clamped in the clamping groove is arranged on the elastic piece 16 adjacent to the end portion. Therefore, when the steel needle 1 is not pulled out, the elastic sheet 16 is clamped in the clamping seat 14 through the clamping buckle thereon; when the steel needle 1 is pulled out to separate the steel needle 1 from the end part of the elastic piece 16, the buckle is separated from the clamping groove due to the elastic action, so that the steel needle 1 and the elastic piece 16 on the steel needle are conveniently pulled out. The bayonet of the slot is also closed by a cap 15.
In summary, the anti-blocking indwelling needle provided by the invention is provided with the blocking tube, so that the anti-blocking indwelling needle can extend into the needle tube when not in transfusion, and plays a role in blocking the needle tube, and can prevent blood from flowing into the inverted needle tube to cause blocking of the needle tube.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. An anti-blocking indwelling needle, comprising: needle tube, plugging tube, pushing tube and catheter seat;
The needle tube is arranged at one end of the catheter seat and is communicated with the catheter seat, the plugging tube is positioned in the catheter seat, the outer diameter of the plugging tube corresponds to the diameter of the needle tube, one end of the plugging tube selectively stretches into the needle tube, and one end of the pushing tube stretches into the catheter seat from the other end of the catheter seat and is connected with the other end of the plugging tube;
the needle tube and the plugging tube are made of FEP; a piston column is further arranged in the catheter seat, and one end of the plugging tube selectively extends into the needle tube through the piston column;
The anti-blocking indwelling needle further comprises: the needle comprises a steel needle, an elastic sheet, a clamping seat, a limiting tube and a needle penetration preventing needle seat, wherein one end of the pushing tube penetrates through the limiting tube and extends into the guide tube seat from the other end of the guide tube seat, the clamping seat is arranged at the other end of the pushing tube, the elastic sheet is arranged in the clamping seat, one end of the steel needle sequentially penetrates through the elastic sheet, the pushing tube and the guide tube seat and extends into the needle tube, a limiting protrusion is arranged on the side wall of one end of the steel needle, and the needle penetration preventing needle seat is arranged at the other end of the steel needle.
2. The anti-occlusion needle of claim 1, wherein a spacer is further disposed between the plunger stem and one end of the push tube.
3. The anti-occlusion needle of claim 1, wherein there is also an interference washer between the push tube and the catheter hub.
4. The anti-blocking indwelling needle according to claim 1, wherein a limiting ring is further sleeved at the other end of the catheter seat, and a protrusion propped against the limiting ring is arranged at one end of the pushing tube.
5. The anti-blocking indwelling needle according to claim 1, wherein a clamping groove is formed in the clamping seat, the end portion of the elastic piece abuts against the steel needle, and a buckle clamped into the clamping groove is arranged on the elastic piece adjacent to the end portion.
6. The anti-blocking needle of claim 5, wherein the bayonet of the clip slot is closed by a clip cover.
7. The anti-clogging needle of claim 1, wherein the needle cannula is housed in a protective cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811527403.6A CN109498897B (en) | 2018-12-13 | 2018-12-13 | Anti-blocking retention needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811527403.6A CN109498897B (en) | 2018-12-13 | 2018-12-13 | Anti-blocking retention needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109498897A CN109498897A (en) | 2019-03-22 |
| CN109498897B true CN109498897B (en) | 2024-05-03 |
Family
ID=65752526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811527403.6A Active CN109498897B (en) | 2018-12-13 | 2018-12-13 | Anti-blocking retention needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109498897B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012171193A1 (en) * | 2011-06-16 | 2012-12-20 | Chen Yongxi | Anti-overflow catheter assembly for indwelling needle |
| CN103071203A (en) * | 2012-12-12 | 2013-05-01 | 山东新华安得医疗用品有限公司 | Anti-acupuncture intravenous detaining needle |
| CN205145282U (en) * | 2015-11-11 | 2016-04-13 | 苏州鑫康道医疗科技有限公司 | Lien needle |
| WO2017113852A1 (en) * | 2015-12-30 | 2017-07-06 | 江苏阳普医疗科技有限公司 | Medical catheter assembly with non-detachable puncture needle |
| CN209713863U (en) * | 2018-12-13 | 2019-12-03 | 苏州鑫康道医疗科技有限公司 | Anti-blocking remaining needle |
-
2018
- 2018-12-13 CN CN201811527403.6A patent/CN109498897B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012171193A1 (en) * | 2011-06-16 | 2012-12-20 | Chen Yongxi | Anti-overflow catheter assembly for indwelling needle |
| CN103071203A (en) * | 2012-12-12 | 2013-05-01 | 山东新华安得医疗用品有限公司 | Anti-acupuncture intravenous detaining needle |
| CN205145282U (en) * | 2015-11-11 | 2016-04-13 | 苏州鑫康道医疗科技有限公司 | Lien needle |
| WO2017113852A1 (en) * | 2015-12-30 | 2017-07-06 | 江苏阳普医疗科技有限公司 | Medical catheter assembly with non-detachable puncture needle |
| CN209713863U (en) * | 2018-12-13 | 2019-12-03 | 苏州鑫康道医疗科技有限公司 | Anti-blocking remaining needle |
Non-Patent Citations (1)
| Title |
|---|
| 正压防针刺型留置针在血管外科静脉输液中的应用;沈美红;尹芳;;当代护士(上旬刊)(第12期);摘要 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109498897A (en) | 2019-03-22 |
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