CN204293572U - A kind of puncturing pericardial effusion pin - Google Patents
A kind of puncturing pericardial effusion pin Download PDFInfo
- Publication number
- CN204293572U CN204293572U CN201420663653.3U CN201420663653U CN204293572U CN 204293572 U CN204293572 U CN 204293572U CN 201420663653 U CN201420663653 U CN 201420663653U CN 204293572 U CN204293572 U CN 204293572U
- Authority
- CN
- China
- Prior art keywords
- needle tubing
- plunger
- back segment
- leading portion
- puncture needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of puncturing pericardial effusion pin, comprises puncture needle tubing, and puncture needle tubing front end is provided with beveled tip, and rear end is provided with syringe Connection Block; In puncture needle tubing, middle front part position is provided with a plunger, and plunger front end is round end, and plunger is provided with the liquid-through hole being led to tail end by sidewall, and the diameter of liquid-through hole is L4; Unlike the prior art: the internal diameter of the close most advanced and sophisticated needle tubing leading portion of described puncture needle tubing is less than the internal diameter of needle tubing back segment, and gear pipe is set in needle tubing back segment, gear pipe is L1 apart from the distance of needle tubing leading portion, and the length of the needle tubing leading portion of the needle tubing beveled tip that punctures dorsad is L3; Described plunger comprises the plunger leading portion coordinated with needle tubing leading portion and the plunger back segment coordinated with needle tubing back segment, and the length of plunger back segment is L2; L1 > L2, L3 > L4.Compared with prior art, structure is simple, and easy to operate, plunger can not come off in the pericardium of patient in needle tubing, and puncture safety, has significant practicality.
Description
Technical field
The present invention relates to field of medical equipment technology, the puncturing pericardial effusion pin of more specifically a kind of Cardiological use.
Background technology
Clinically, to the treatment of pericardial fluid patient, the method adopting puncture to extract more.At present, the traditional syringe needle of general employing punctures, and because needle tip is comparatively sharp-pointed, and after penetrating pericardium, because heart is beated always, needle point is easy to stab cardiac muscle, even causes sudden cardiac arrest, there is very large potential safety hazard.Some scheme adopts extension-type puncture needle, but the operation of this puncture needle comparatively bothers, and is easy to make air enter in pericardium, also very undesirable in puncture effect.
Publication number is that the Chinese utility model patent of CN202932985U discloses a kind of Cardiological puncture needle, and it comprises puncture needle tubing and syringe Connection Block; In puncture needle tubing, middle front part position is provided with a plunger, and plunger front end is round and smooth, and plunger is provided with the liquid-through hole being led to tail end by sidewall.After penetrating pericardium, pushing syringe orders about plunger and moves forward, and when the liquid-through hole on plunger sidewall is exposed to outside puncture needle tubing, can implements hydrops and extract or drug injection.But also there is certain defect in this structure: pushing syringe orders about in the process that plunger moves forward the distance needing to hold very carefully plunger and move forward, when the distance that plunger moves forward is excessive, plunger likely comes off in needle tubing, falls in the pericardium of patient, causes potential safety hazard.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, provides a kind of novel puncturing pericardial effusion pin.
A kind of puncturing pericardial effusion pin, comprises puncture needle tubing 3, and puncture needle tubing front end is provided with beveled tip, and rear end is provided with syringe Connection Block 4; In puncture needle tubing, middle front part position is provided with a plunger 1, and plunger front end is round end, and plunger is provided with the liquid-through hole 2 being led to tail end by sidewall, and the diameter of liquid-through hole is L4; Unlike the prior art: the internal diameter of the close most advanced and sophisticated needle tubing leading portion 31 of described puncture needle tubing is less than the internal diameter of needle tubing back segment 32, and gear pipe 5 is set in needle tubing back segment 32, gear pipe 5 is L1 apart from the distance of needle tubing leading portion 31, and the length of the needle tubing leading portion of the needle tubing beveled tip that punctures dorsad is L3; Described plunger 1 comprises the plunger leading portion 11 coordinated with needle tubing leading portion 31 and the plunger back segment 12 coordinated with needle tubing back segment 32, and the length of plunger back segment 12 is L2; The pass of L1, L2, L3, L4 is: L1 > L2, L3 > L4.
Further, the inclined-plane of the puncture needle tip end when plunger back segment 12 contacts with gear pipe 5 and plunger foward dome tangent.
Compared with prior art, structure is simple, and easy to operate, plunger can not come off in the pericardium of patient in needle tubing, and puncture safety, has significant practicality.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic diagram of this utility model plunger initial condition.
Fig. 3 is the status architecture schematic diagram of this utility model plunger when fully stretching out.
Detailed description of the invention
See accompanying drawing 1-3.
A kind of puncturing pericardial effusion pin, comprises puncture needle tubing 3, and puncture needle tubing front end is provided with beveled tip, and rear end is provided with syringe Connection Block 4; In puncture needle tubing, middle front part position is provided with a plunger 1, and plunger front end is round end, and plunger is provided with the liquid-through hole 2 being led to tail end by sidewall, and the diameter of liquid-through hole is L4; Unlike the prior art: the internal diameter of the close most advanced and sophisticated needle tubing leading portion 31 of described puncture needle tubing is less than the internal diameter of needle tubing back segment 32, and gear pipe 5 is set in needle tubing back segment 32, gear pipe 5 is L1 apart from the distance of needle tubing leading portion 31, and the length of the needle tubing leading portion of the needle tubing beveled tip that punctures dorsad is L3; Described plunger 1 comprises the plunger leading portion 11 coordinated with needle tubing leading portion 31 and the plunger back segment 12 coordinated with needle tubing back segment 32, and the length of plunger back segment 12 is L2; The pass of L1, L2, L3, L4 is: L1 > L2, L3 > L4.When plunger back segment 12 is tangent with the inclined-plane and plunger foward dome keeping off puncture needle tip end when pipe 5 contacts.
It is connected with syringe before puncture, be that the inclined-plane of puncture needle tip end and plunger foward dome are tangent under initial condition, and thus in the process punctured, the tissue of human body can not enter in needle tubing after fragmentation and cause blocking.After needle tubing enters pericardium, certain medicinal liquid or normal saline is retained in syringe, pushing syringe orders about plunger and moves forward, continue to promote, plunger back segment 12 is finally made to contact with needle tubing leading portion 31, pushing syringe in any case, plunger also can not continue reach, thus ensure that plunger can not come off and fall in pericardium.When liquid-through hole now on plunger sidewall is exposed to outside puncture needle tubing, can implement hydrops and extract or drug injection, plunger foward dome can prevent from causing damage to cardiac muscle.
Claims (2)
1. a puncturing pericardial effusion pin, comprises puncture needle tubing (3), and puncture needle tubing front end is provided with beveled tip, and rear end is provided with syringe Connection Block (4); In puncture needle tubing, middle front part position is provided with a plunger (1), and plunger front end is round end, and plunger is provided with the liquid-through hole (2) being led to tail end by sidewall, and the diameter of liquid-through hole is L4; It is characterized in that: the internal diameter of the close most advanced and sophisticated needle tubing leading portion (31) of described puncture needle tubing is less than the internal diameter of needle tubing back segment (32), and gear pipe (5) is set in needle tubing back segment (32), gear pipe (5) is L1 apart from the distance of needle tubing leading portion (31), and the length of the needle tubing leading portion of the needle tubing beveled tip that punctures dorsad is L3; Described plunger (1) comprises the plunger leading portion (11) coordinated with needle tubing leading portion (31) and the plunger back segment (12) coordinated with needle tubing back segment (32), and the length of plunger back segment (12) is L2; The pass of L1, L2, L3, L4 is: L1 > L2, L3 > L4.
2. a kind of puncturing pericardial effusion pin according to claim 1, is characterized in that: tangent on the inclined-plane and plunger foward dome of managing puncture needle tip end when (5) contact when plunger back segment (12) and gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663653.3U CN204293572U (en) | 2014-11-10 | 2014-11-10 | A kind of puncturing pericardial effusion pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663653.3U CN204293572U (en) | 2014-11-10 | 2014-11-10 | A kind of puncturing pericardial effusion pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204293572U true CN204293572U (en) | 2015-04-29 |
Family
ID=53099158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420663653.3U Expired - Fee Related CN204293572U (en) | 2014-11-10 | 2014-11-10 | A kind of puncturing pericardial effusion pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204293572U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110269647A (en) * | 2019-06-26 | 2019-09-24 | 刘永 | A kind of Nephrology dept.'s sting device |
-
2014
- 2014-11-10 CN CN201420663653.3U patent/CN204293572U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110269647A (en) * | 2019-06-26 | 2019-09-24 | 刘永 | A kind of Nephrology dept.'s sting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20151110 |
|
| EXPY | Termination of patent right or utility model |