CN200951099Y - Liver puncture needle - Google Patents
Liver puncture needle Download PDFInfo
- Publication number
- CN200951099Y CN200951099Y CN 200620027403 CN200620027403U CN200951099Y CN 200951099 Y CN200951099 Y CN 200951099Y CN 200620027403 CN200620027403 CN 200620027403 CN 200620027403 U CN200620027403 U CN 200620027403U CN 200951099 Y CN200951099 Y CN 200951099Y
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- CN
- China
- Prior art keywords
- needle
- syringe
- injection
- liver puncture
- puncture needle
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- 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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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a liver puncture needle, which pertains to the syringes for medical purposes which are used to measure the dose and block the piston rods, or the apparatus to protect the needle heads. The utility model includes an injection nipple which is arranged at the front end of an injection needle cylinder, an injection needle head which is arranged on the injection nipple and is provided with a needle head protective sheath, a needle cylinder seat whose back end is turned outward, one end which is inserted into the needle cylinder is provided with a rubber piston, and the other end which is inserted into the needle cylinder is formed with a push rod with 3-4 leaves of a wrench. Because a limit blocking board is moved, the inner edge of a cross arc-shaped hole is embedded in a slot which is arranged at the edge of the pulling-out push rod, thus achieving the purpose of keep the negative pressure continuously, then the operators do not need to worry about the inadequate negative pressure caused by the instability of the hand grip force. The utility model is not only applicable to the liver puncture, but also applicable to the collection of other substantive organs or the puncture of the tissues; because the needle head protective sheath plays the roles of support and limit of the puncture depth of the needle head, the needle-insertion depth is easy to grasp, so as to avoid the unnecessary vascular nerve damage.
Description
Technical field
This utility model relates to the injector for medical purpose that is used for dosing and blocks piston rod, or the protection syringe needle utensil, specifically be a kind of can spacing quantitative liver puncture needle.
Background technology
Percutaneous hepatocyte biopsy is a principle of utilizing the acupuncture negative pressure-pumping, and one that extracts the hepatocyte tissue has wound inspection technology.Usually with puncture needle under the indication of B ultrasonic, puncture needle enters when organizing visceral layer, release 2 ml physiological salines with syringe after, the pumpback nook closing member forms negative pressure, and fast advance and retreat goes out pin, the compressing site of puncture, finish this operation, puncture only used for 1 second, and whole process is no more than 10 minutes.But in operating process, because the difference of the individual hand strength of patient, negative pressure forms insufficiently during pumpback that Yi Fashengyin hand strength instability causes, causes and takes the hepatic tissue failure, brings unnecessary painful and influence diagnosis to the patient.
Chinese patent 2321399 discloses a kind of " liver puncture device fast ", it has piercing needle and the syringe that steel wire stylet is housed in it, its construction features is that piercing needle is directly installed on the syringe, the side spacing of syringe pintle equally has several otch grooves, and one of movable installation can snap in the location door bolt in the otch groove on the rear wing of syringe body.This utility model is simple and reliable for structure, and is easy to operate, rapid, accurate, only needs a people can finish the liver puncture process.
Chinese patent 2256705 discloses a kind of " liver puncture needle ", it comprises syringe, syringe needle, be fixed with lacing film and push away at syringe piston on the step of end of handle, the direction of this lacing film is consistent with the direction of propulsion of syringe piston, the front end of lacing film is provided with snap close, also be fixed with at the A point place of the terminal step of syringe needle tube one with lacing film direction lacing film in opposite directions, the front end of lacing film is provided with snap close, one of axle sleeve in a tubular form end is fixed on A point place, the other end is fixed on the outer wall of syringe needle tube, axle sleeve is parallel with the direction of needle tubing, the power transmission shaft that evenly is provided with the dentation groove on the axial wall passes this axle sleeve, and the front end of power transmission shaft is fixed with the contact that a top is forked opening, syringe needle is stuck in the forked opening of this contact, spring housing exposes at syringe piston on the piston body of syringe needle tube, and the one side that relies on power transmission shaft at lacing film also is provided with dentation, and this dentation snaps in the dentation groove on the power transmission shaft.This utility model is visited into mode with contact and is opened snap close automatically, utilizes the tension force of spring that syringe needle is inhaled while advancing again, and it is simple in structure, with low cost.
Summary of the invention
This utility model be exactly when solving the pumpback that patient's hand strength instability causes negative pressure form inadequate problem, and provide a kind of qualification depth of needle, set the volumetrical spacing quantitative liver puncture needle of negative pressure by required negative pressure amount.
This utility model by following technology side by realizing.
A kind of liver puncture needle comprises the injection nipple of syringe cylinder front end and goes up the injection needle that installation has needle guard, the cylinder seat that rear port turns up, and an end that inserts in the syringe is equipped with rubber piston, and the other end forms the 3-4 leaf pushing ram of spanner; Its cylinder seat is to be formed with corresponding straight flange in back end of syringe mouth centrage both sides, the cylinder seat that is slidingly matched is installed in intermediate formation cross arc lobe shape hole, form respectively up and down in the postive stop baffle of slideway, on the edge of 3-4 leaf pushing ram at a certain distance respectively correspondence be formed with break slot; The needle guard that is installed on the injection needle is overlapped and the headgear be combined into by body.
She Ji this utility model in use spurs pushing ram like this, and piston moves outward, forms negative pressure; Mobile to the left or to the right postive stop baffle is embedded in the break slot on pushing ram edge left side or the right side cross arc lobe shape hole inner edge, and needn't persistence pulling pushing ram, reaches the purpose that continues to keep negative pressure.Make the patient needn't worry the power of the holding instability of oneself like this, and cause the negative pressure deficiency, cause and take the hepatic tissue failure.This utility model is not only applicable to liver and wears, and is applicable to that other parenchymal viscera is gathered or the puncture of tissue; Because needle guard adopts body cover and the bonded mode of headgear, the body cover plays support and the restriction syringe needle thrusts too dark effect, is convenient to grasp depth of needle, in order to avoid cause unnecessary nervus vasculairs infringement.Especially less or abecedarian training is more suitable to palm,
Description of drawings
Accompanying drawing is a decomposition texture sketch map of the present utility model.
Among the figure: 1. syringe cylinder 2. is injected nipples
3. needle guard 4. body covers
5. headgear 6. straight flange cylinder seats
7. pushing ram 8. spanners
9. break slot 10. postive stop baffles
11. slideway 12. cross arc lobe shape holes
13. piston 14. syringe needles
15. pin fasten 16. strengthen every
17. volume scale mark
The specific embodiment
Below in conjunction with drawings and Examples this utility model is elaborated.
A kind of liver puncture needle, comprise the injection nipple 2 of syringe cylinder 1 front end and go up the injection needle 14 that installation has needle guard 3, the cylinder seat that rear port turns up, an end that inserts in the syringe is equipped with rubber piston 13, and the other end forms the pushing ram that is divided into the 3-4 leaf 7 of spanner 8; Its cylinder seat is to be formed with corresponding straight flange cylinder seat 6 in back end of syringe mouth centrage both sides, the cylinder seat 6 that is slidingly matched is installed in intermediate formation cross arc lobe shape hole 12, form respectively up and down in the postive stop baffle 10 of slideway 11, on the edge of 3-4 leaf pushing ram 7 at a certain distance respectively correspondence be formed with break slot 9; Be installed in needle guard 3 on the injection needle 14 by body cover 4 and headgear 5 be combined intos.The straight flange cylinder seat of being convenient to grip 6 is round rectangle, and straight flange inserts and matches with slideway 11 up and down.
Described liver puncture needle, the cross circular arc lobe shape hole 12 of its postive stop baffle 10 intermediate formation, its vertical minor axis equates with syringe cylinder 1 internal diameter, and horizontal major diameter is greater than vertical minor axis, and 9 ends of break slot to the distance of centrage equates on major diameter both sides arc radius of circle and the pushing ram 7.In the middle of promptly forming be and the identical circular hole of syringe cylinder 1 internal diameter, the circle hole centreline left and right sides is communicated with corresponding semicircle orifice respectively, and the diameter of semicircle orifice is less than syringe cylinder 1 internal diameter, and equals the distance of 9 ends of break slot to centrage.The thickness of postive stop baffle 10 is advisable to embed in the break slot 9.
Described liver puncture needle, its width that is divided into the spacing of break slot 9 on the pushing ram 7 of 3-4 leaf and break slot 9 is identical with the degree of depth.
During use, pulling pushing ram 7 reaches required negative pressure, and mobile to the left or to the right postive stop baffle 10 is embedded in the break slot 9 on pushing ram 7 edges left sides or the right side cross arc lobe 12 left sides, shape hole or right side inner edge, and needn't persistence spur pushing ram, reach the purpose that continues to keep negative pressure.Certainly, since 12 inside edges, cross arc lobe shape hole on the postive stop baffle 10 can not be embedded in fully one by one in the break slot 9 on the pushing ram 7.
With 20 milliliters of syringes is example, and the spacing of break slot 9 can be equivalent to per 5 milliliters of volumes 1 group of break slot 9 is set on the pushing ram 7.
Described liver puncture needle, it is installed in needle guard 3 on the injection needle 14 by body cover 4 and headgear 5 plug-in mounting be combined intos.
It is thick slightly that the body of needle guard 3 overlaps 4 walls, overlaps 4 inserted terminals and press against and hinder skin in order to avoid syringe needle 14 thrusts the back body.Also body can be overlapped 4 inserted terminals and be shaped to the shape of expanding slightly.
The degree that the body of content piercing needle cover 4 and headgear 5 length can expose according to piercing needle 14, it is standby to be made into different size.As puncture needle head length 10cm, the long 1-3cm of body cover, the then long 7-9cm of headgear etc.
Described liver puncture needle, it is installed in needle guard 3 on the injection needle 14 and is spirally connected by the internal and external screw thread (not shown) of body cover 4 and headgear 5 and forms.
Claims (5)
1. a liver puncture needle comprises the injection nipple of syringe cylinder front end and goes up the injection needle that installation has needle guard, the cylinder seat that rear port turns up, and an end that inserts in the syringe is equipped with rubber piston, and the other end forms the 3-4 leaf pushing ram of spanner; It is characterized in that cylinder seat is to be formed with corresponding straight flange in back end of syringe mouth centrage both sides, the cylinder seat that is slidingly matched is installed in intermediate formation cross arc lobe shape hole, form respectively up and down in the postive stop baffle of slideway, on the edge of 3-4 leaf pushing ram at a certain distance respectively correspondence be formed with break slot; The needle guard that is installed on the injection needle is overlapped and the headgear be combined into by body.
2. liver puncture needle according to claim 1, the cross circular arc lobe shape hole that it is characterized in that the postive stop baffle intermediate formation, its vertical minor axis equates with the syringe cylinder internal diameter, and horizontal major diameter is greater than vertical minor axis, on major diameter both sides arc radius of circle and the pushing ram at the bottom of the break slot distance to centrage equate.
3. liver puncture needle according to claim 1 is characterized in that the width of the spacing of break slot on the 3-4 leaf pushing ram and break slot is identical with the degree of depth.
4. liver puncture needle according to claim 1, the needle guard that it is characterized in that being installed on the injection needle is overlapped and headgear plug-in mounting be combined into by body.
5. liver puncture needle according to claim 1 is characterized in that being installed in needle guard on the injection needle and is spirally connected by the internal and external screw thread of body cover and headgear and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620027403 CN200951099Y (en) | 2006-09-25 | 2006-09-25 | Liver puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620027403 CN200951099Y (en) | 2006-09-25 | 2006-09-25 | Liver puncture needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200951099Y true CN200951099Y (en) | 2007-09-26 |
Family
ID=38809398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620027403 Expired - Fee Related CN200951099Y (en) | 2006-09-25 | 2006-09-25 | Liver puncture needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200951099Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109567751A (en) * | 2018-11-15 | 2019-04-05 | 陈圣开 | A kind of puncture needle and its application method for measurement cirrhosis hardness in art |
| WO2023178836A1 (en) * | 2022-03-22 | 2023-09-28 | 中南大学 | Liver puncture outfit |
-
2006
- 2006-09-25 CN CN 200620027403 patent/CN200951099Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109567751A (en) * | 2018-11-15 | 2019-04-05 | 陈圣开 | A kind of puncture needle and its application method for measurement cirrhosis hardness in art |
| CN109567751B (en) * | 2018-11-15 | 2021-09-24 | 陈圣开 | Puncture needle for measuring cirrhosis hardness in operation |
| WO2023178836A1 (en) * | 2022-03-22 | 2023-09-28 | 中南大学 | Liver puncture outfit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070926 Termination date: 20091026 |