CN211327416U - Puncture needle capable of avoiding accidental injury and secondary pain - Google Patents
Puncture needle capable of avoiding accidental injury and secondary pain Download PDFInfo
- Publication number
- CN211327416U CN211327416U CN201921348163.3U CN201921348163U CN211327416U CN 211327416 U CN211327416 U CN 211327416U CN 201921348163 U CN201921348163 U CN 201921348163U CN 211327416 U CN211327416 U CN 211327416U
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- section
- hole
- puncture needle
- tube
- puncture
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- 208000012260 Accidental injury Diseases 0.000 title claims abstract description 16
- 208000014674 injury Diseases 0.000 title claims abstract description 16
- 208000002193 Pain Diseases 0.000 title claims description 16
- 210000001503 joint Anatomy 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 210000004204 blood vessel Anatomy 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 210000002620 vena cava superior Anatomy 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 208000005228 Pericardial Effusion Diseases 0.000 description 1
- 210000004381 amniotic fluid Anatomy 0.000 description 1
- 230000000259 anti-tumor effect Effects 0.000 description 1
- 230000001746 atrial effect Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 238000002512 chemotherapy Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001631 haemodialysis Methods 0.000 description 1
- 230000000322 hemodialysis Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000016236 parenteral nutrition Nutrition 0.000 description 1
- 210000004912 pericardial fluid Anatomy 0.000 description 1
- 210000003516 pericardium Anatomy 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- 210000001835 viscera Anatomy 0.000 description 1
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Abstract
The utility model discloses a can avoid accidental injury and avoid painful pjncture needle of secondary, the pjncture needle includes the connection mouth with the export butt joint of aseptic syringe, the tip of connecting the mouth is equipped with the linking pipe, be equipped with the through hole of intercommunication linking pipe both sides terminal surface on the linking pipe, the through hole is including consecutive and coaxial first section, second section and third section, the diameter of second section is greater than first section and third section, the pjncture needle still includes the thorn pipe of terminal embedding through hole third section and imbeds the intraductal pipe of thorn, the one end of pipe extends to the junction of through hole second section and first section and the junction of pipe and through hole second section and first section leaves the clearance, the junction of through hole second section and third section still is equipped with a spacing ring with pipe outer wall connection. The utility model has the advantages that: the technical scheme has the advantages of safe use, simple structure, low manufacturing cost and wide application.
Description
Technical Field
The utility model relates to a medical device, in particular to a puncture needle which can avoid accidental injury and secondary pain.
Background
The central venous catheter kit comprises a puncture needle, a blood vessel sheath, a guide wire and a central venous catheter. The central venous catheter is a clinical common vascular access tool placed in a central venous system, and is wide in application field. Generally, central venous catheters include Central Venous Catheters (CVCs), Tunneled Central Venous Catheters (TCVCs), peripherally inserted central venous catheters (PICCs), implanted ports (ports), long and short term hemodialysis catheters, and the like. The central venous catheter can be used for measuring the central venous pressure, a large amount of rapid venous transfusion, a blood vessel access of long-term parenteral nutrition and anti-tumor chemotherapy and a blood exchange access during blood purification in clinical application.
The location of the central catheter tip, which is critical to the efficacy of the treatment and patient safety, is located within the superior vena cava near the right atrial junction. The CVC must be positioned at the catheter tip before use and adjusted if the central venous catheter tip is not in the Superior Vena Cava (SVC). However, the currently internationally recognized methods for determining the position of the catheter tip mainly include an X-ray localization technology, an Intracavitary Electrocardiogram (ECG), and an Intracavitary ECG localization technology.
With the improvement of medical technology and medical level, the mapping technology of placing electrode central venous catheters at different parts of the heart to record the intracardiac electrocardiogram has become the cornerstone of clinical electrophysiological research. By applying the intracavitary ECG technology, the position of the tip of the central venous catheter can be judged according to the form of electrocardiogram P wave (a wave emitted by the heart in the human body) in the process of placing the central venous catheter. And after a puncture needle or a blood vessel sheath of the cardiac venous catheter kit enters a target blood vessel in a specific operation process, the guide wire is delivered into the target blood vessel through the puncture needle or the blood vessel sheath to establish a guide passage, and then the central venous catheter extends the guide wire into the target blood vessel until the expected position is reached.
At present, the end of the puncture needle is sharp in the puncture process, so that the internal organs of a patient are easy to be punctured by slight misoperation sometimes to cause medical accidents, so that the puncture needle capable of avoiding accidental injury and secondary pain is necessary to be developed, and the same patent as the technical scheme is not found after retrieval.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can avoid accidental injury and avoid painful pjncture needle of secondary, solve one or more among the above-mentioned prior art problem.
In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides a can avoid accidental injury and avoid painful pjncture needle of secondary which innovation point lies in: the puncture needle comprises a connecting nozzle butted with the outlet of the sterile injector, the end part of the connecting nozzle is provided with a connecting pipe, the connecting pipe is provided with a through hole communicated with the end surfaces at the two sides of the connecting pipe, the through hole comprises a first section which is sequentially connected and coaxial, the puncture needle also comprises a puncture tube with the tail end embedded into the third section of the through hole and a guide tube embedded into the puncture tube, one end of the guide tube extends to the joint of the second section of the through hole and the first section, a gap is reserved between the guide tube and the joint of the second section of the through hole and the first section of the through hole, a limiting ring connected with the outer wall of the guide tube is further arranged at the joint of the second section of the through hole and the third section of the through hole, a spring with one end connected with the limiting ring and the other end connected with the joint of the second section of the through hole and the first section of the through hole is further arranged in the second section of the through hole, the spring is in a compressed state, a guide hole is arranged on the side surface of the head of.
In some embodiments, the head of the catheter is smooth and hemispherical.
In some embodiments, the catheter tip is spaced from the puncture tip by a distance less than the length of the gap.
In some embodiments, the middle of the connecting nozzle is further provided with a lock catch.
In some embodiments, the end of the stinger is provided with a knife edge, and the knife edge is in a smooth arc shape.
In some embodiments, the diameter at the knife edge of the lance is greater than the tube diameter of the remainder of the lance.
The utility model has the advantages that: the technical scheme has safe use, simple structure and low cost, and can be widely used; the knife edge of the puncture tube can be gently punctured below the skin, and meanwhile, the diameter of the knife edge is larger than the diameter of the tube, so that the patient only suffers primary pain to avoid secondary pain caused by subsequent friction.
Drawings
Fig. 1 is a schematic structural view of a puncture needle of the puncture needle capable of avoiding accidental injury and secondary pain.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the puncture needle capable of avoiding accidental injury and secondary pain comprises a connecting nozzle 1 butted with an outlet of a sterile syringe, a connecting pipe 2 is arranged at the end part of the connecting nozzle 1, a through hole communicated with the end surfaces of two sides of the connecting pipe 2 is arranged on the connecting pipe 2, the through hole comprises a first section 21, a second section 22 and a third section 23 which are sequentially connected and coaxial, the diameter of the second section 22 is larger than that of the first section 21 and the third section 23, the puncture needle further comprises a puncture tube 3 with the tail end embedded into the third section 23 of the through hole and a guide tube 4 embedded into the puncture tube 3, one end of the guide tube 4 extends to the joint of the second section 22 and the first section 21 of the through hole, a gap is reserved at the joint of the second section 22 and the first section 21 of the through hole and the guide tube 4, a limiting ring 5 connected with the outer wall of the guide tube 4 is further arranged at the joint of the second section 22 and the third section 23 of the through hole, and a bullet connected with the The spring 6 is in a compressed state, the side surface of the head part of the conduit 4 is provided with a leading-out hole 7, and the head part of the conduit 4 extends out of the front end of the puncture tube 3; the head of the catheter 4 is in a smooth hemispherical shape, so that the head end of the catheter 4 is smooth, and the damage to the inside of a human body caused by the end part is avoided; the distance between the head of the conduit 4 and the front end of the puncture tube 3 is less than the length of the gap, and the technical scheme can ensure that the head of the conduit 4 is completely contracted into the puncture tube 3; the middle part of the connecting nozzle 1 is also provided with a lock catch.
The working principle of the technical scheme is as follows: when in use, the head of the puncture needle catheter 4 is contracted towards the inside of the puncture tube 3 under the action of force, so that the blade at the front end of the puncture tube 3 is exposed for puncture, the catheter 4 extends out under the action of the spring 6 after entering the inside of a human body, and the head of the catheter 4 is not provided with the blade, so that the inside of the human body can be protected, and the feasibility of a doctor in the operation process is improved; the puncture needle is used for pleuroperitoneal cavity and other tissue cavities, such as pericardium puncture and amniotic fluid puncture, the head of the catheter 4 of the puncture needle can be protected, accidental injury can be reduced, pleuroperitoneal fluid and pericardial fluid volume are less, and puncture can be carried out due to the protection of the head of the catheter 4.
In some embodiments, the end of the stinger 3 is provided with a knife edge, which is smoothly arc-shaped.
In some embodiments, the diameter at the knife edge of the lance 3 is greater than the tube diameter of the rest of the lance.
The utility model has the advantages that: the technical scheme has safe use, simple structure and low cost, and can be widely used; the knife edge of the puncture tube can be gently punctured below the skin, and meanwhile, the diameter of the knife edge is larger than the diameter of the tube, so that the patient only suffers primary pain to avoid secondary pain caused by subsequent friction.
The scope of the invention is defined by the appended claims and equivalents thereof. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, similar modifications and improvements can be made without departing from the inventive concept, and these should also be considered as within the protection scope of the present invention.
Claims (6)
1. The utility model provides a can avoid accidental injury and avoid painful pjncture needle of secondary which characterized in that: the puncture needle comprises a connecting nozzle (1) butted with an outlet of the sterile injector, and the end part of the connecting nozzle (1) is provided with a connecting pipe (2); the puncture needle is characterized in that a through hole communicated with the end faces of two sides of the connecting pipe (2) is formed in the connecting pipe (2), the through hole comprises a first section (21), a second section (22) and a third section (23) which are sequentially connected and coaxial, the diameter of the second section (22) is larger than that of the first section (21) and that of the third section (23), the puncture needle further comprises a puncture tube (3) with the tail end embedded into the third section (23) of the through hole and a guide tube (4) embedded into the puncture tube (3), one end of the guide tube (4) extends to the joint of the second section (22) and the first section (21) of the through hole, a limit ring (5) connected with the outer wall of the guide tube (4) is arranged at the joint of the second section (22) and the third section (23) of the through hole, one end of the second section (22) of the through hole is connected with the limit ring (5), and the other end of the second section (22) and the first section (21) of the through hole are arranged The spring (6) at the seam is in a compressed state, the side surface of the head of the conduit (4) is provided with a guide hole (7), and the head of the conduit (4) extends out of the front end of the puncture tube (3).
2. A puncture needle capable of avoiding accidental injury and avoiding secondary pain according to claim 1, wherein: the head of the conduit (4) is smooth and hemispherical.
3. A puncture needle capable of avoiding accidental injury and avoiding secondary pain according to claim 1, wherein: the distance between the head of the conduit (4) and the front end of the puncture tube (3) is less than the length of the gap.
4. A puncture needle capable of avoiding accidental injury and avoiding secondary pain according to claim 1, wherein: the middle part of the connecting nozzle (1) is also provided with a lock catch.
5. A puncture needle capable of avoiding accidental injury and avoiding secondary pain according to claim 1, wherein: the end part of the stinging pipe (3) is provided with a knife edge which is in a smooth arc shape.
6. A puncture needle capable of avoiding accidental injury and avoiding secondary pain according to claim 1, wherein: the diameter of the knife edge of the thorn tube (3) is larger than the tube diameters of other parts of the thorn tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921348163.3U CN211327416U (en) | 2019-08-20 | 2019-08-20 | Puncture needle capable of avoiding accidental injury and secondary pain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921348163.3U CN211327416U (en) | 2019-08-20 | 2019-08-20 | Puncture needle capable of avoiding accidental injury and secondary pain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211327416U true CN211327416U (en) | 2020-08-25 |
Family
ID=72128789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921348163.3U Expired - Fee Related CN211327416U (en) | 2019-08-20 | 2019-08-20 | Puncture needle capable of avoiding accidental injury and secondary pain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211327416U (en) |
-
2019
- 2019-08-20 CN CN201921348163.3U patent/CN211327416U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200825 |