CN202086545U - Puncture needle cannula with opposite openings - Google Patents
Puncture needle cannula with opposite openings Download PDFInfo
- Publication number
- CN202086545U CN202086545U CN2011201852320U CN201120185232U CN202086545U CN 202086545 U CN202086545 U CN 202086545U CN 2011201852320 U CN2011201852320 U CN 2011201852320U CN 201120185232 U CN201120185232 U CN 201120185232U CN 202086545 U CN202086545 U CN 202086545U
- Authority
- CN
- China
- Prior art keywords
- puncture needle
- puncture
- closing member
- nook closing
- sleeve pipe
- 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
Links
- 238000000034 method Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920006306 polyurethane fiber Polymers 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
Disclosed is a puncture needle cannula with opposite openings. An elliptical side hole (1) is arranged on a side surface of the far end of a tubular puncture needle cannula by a certain distance to the top end, and an arc-shaped needle core (4) can smoothly penetrate through the side hole to be redirected. A longitudinal opening (2) is arranged at a 180-degree position, slightly towards the tail end, of the opposite side of an elliptical opening of the tubular puncture needle cannula. The width of the longitudinal opening is sufficient so that the puncture needle core can bulge out of the longitudinal opening, the longitudinal opening has a certain length, and the radius of redirection curvature of the arc-shaped needle core can be increased by the aid of the longitudinal opening, so that the arc-shaped needle core can be turned more easily.
Description
Technical field
This utility model relates to a kind of to perforate Puncture needle sleeve pipe, utilizes this sleeve pipe and corresponding arc nook closing member can realize turning to of puncture.
Background technology
At present, relate to allow the puncture nook closing member turns our previous design arranged a kind of charge shaft to the vertical direction method of opening a side opening reach puncture and turn to that (multiaxis of deep tissue is to perforator in a kind of body, number of patent application: purpose 201020582966.8), but in test subsequently, find: when the side opening opening is excessive, though nook closing member is to pass and realized to turn to from the side mouth, but thisly turn to still that main what rely on is the elastically-deformable effect of nook closing member oneself, the casing wall side opening of opening part can not effectively be brought into play point action to turning to of nook closing member; And though the fulcrum that turns to can be provided when too small openings, nook closing member and casing wall angle too small radius of curvature are too little, nook closing member and casing wall contact surface are too little rough again, resistance is bigger, blocks pin easily.
Summary of the invention
In order to overcome the disadvantage that existing puncture needle can not effectively turn to, the invention provides a kind of to perforate Puncture needle sleeve pipe, increase a stringer opening again at original side opening offside exactly, utilize this to split the borehole jack pipe and cooperate a series of puncture nook closing members, just can more effectively realize turning to of puncture needle.
The technical scheme that its technical problem that solves this utility model adopts is: in far-end (the head end promptly punctures) side of tubulose puncture needle sleeve pipe far from the top suitably distance (be preferably 1mm～5mm) open an oval side opening, this ellipse side opening is the passage of puncture nook closing member oblique puncture in tissue.180 ° of positions slightly caudad of offside in this elliptical openings, a stringer opening is arranged, allow the puncture nook closing member the time from the oval side opening direction of axially turning to of puncture casing, part is in nook closing member on the radius of curvature from this stringer opening bulging, so just can under the situation that does not increase the puncture casing diameter, increase the radius of curvature of nook closing member as much as possible, turning to of nook closing member of puncture is more prone to.This adopts material such as rustless steel, polyurethane or carbon fiber to the perforate paracentesis trocar.
The beneficial effects of the utility model are: owing to allow the puncture nook closing member from the oval side opening direction of axially turning to of puncture casing the time to the perforate paracentesis trocar, part is in nook closing member on the radius of curvature from the stringer opening bulging of offside, so just can under the situation that does not increase the puncture casing diameter, increase the radius of curvature of nook closing member as much as possible, turning to of nook closing member of puncture is more prone to.
Description of drawings
Below in conjunction with drawings and Examples this utility model is further specified.
Fig. 1 is to perforate paracentesis trocar sleeve pipe front end schematic perspective view.
Fig. 2 is the following view to perforate paracentesis trocar sleeve pipe front end, i.e. the axonometric chart of observing from the stringer opening direction.
Fig. 3 is the schematic perspective view of arc puncture nook closing member front end.
Fig. 4 is the schematic perspective view that passes situation when organizing that the telescopic oval side opening of perforate paracentesis trocar is arrived when arc puncture nook closing member needle point.
Among the figure: 1. the oval side opening of puncture needle sleeve pipe; 2. the stringer side opening of puncture needle sleeve pipe; 3. nook closing member bulging part from the stringer side opening of puncture needle sleeve pipe punctures; 4. the puncture nook closing member passes from the oval side opening of puncture needle sleeve pipe, enters tissue after turning to.
The specific embodiment:
At Fig. 1, in 2, be to perforate paracentesis trocar sleeve pipe front end volume rendering sketch map, among the figure as can be seen the distal side of tubulose puncture needle sleeve pipe apart from the top suitably distance open an oval side opening (1).180 ° of oval side opening offsides have a stringer opening (2) by telescopic tail end slightly.The diameter of the width ratio puncture nook closing member of stringer opening is big slightly, allows the puncture nook closing member to pass through, and the length of stringer opening is decided according to the requirement of the radius of curvature needs increase of puncture nook closing member.
Fig. 3 is an arc puncture nook closing member front-end view, and puncture nook closing member front end itself has certain radian, but after entering straight tubulose puncture needle sleeve pipe tail end, the arch section of arc puncture nook closing member is subjected to the restriction of puncture needle sleeve pipe and stretches.
Fig. 4 is the sketch map that enters tissue after oval side opening that arc puncture nook closing member (4) passes puncture casing turns to: because the arc nook closing member itself has radian, therefore when advancing to the oval side opening of puncture needle sleeve pipe front end, the puncture nook closing member relies on the elastic return arc of self, at this moment the nook closing member needle point that punctures just can enter tissue from oval side opening, realizes turning to.
In the steering procedure of puncture nook closing member, if the space that relies on the Puncture needle sleeve bore to be provided merely turns to, the radius of curvature that the nook closing member that then punctures turns to is too little, turns to difficulty.And in the design, a stringer opening is arranged owing to oval side opening offside to perforate Puncture needle sleeve pipe, and the part puncture nook closing member that at this moment is in the radius of curvature turning can be from the outside bulging of stringer opening part, and the result has increased radius of curvature, makes to turn than being easier to.
Claims (3)
1. one kind to perforate Puncture needle sleeve pipe, it is characterized in that: the distal side of tubulose puncture needle sleeve pipe apart from the top suitably distance open an oval side opening, there is a stringer opening the 180 ° of positions slightly caudad of offside in elliptical openings.
2. according to claim 1 to perforate Puncture needle sleeve pipe, it is characterized in that: at the oval side opening of the far-end of tubulose puncture needle sleeve pipe, the arc nook closing member can turn to by this side opening smoothly.
3. according to claim 1 to perforate Puncture needle sleeve pipe, it is characterized in that: at the stringer opening of elliptical openings offside, the width of this stringer opening allows the bulging of puncture nook closing member, and certain-length is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201852320U CN202086545U (en) | 2011-05-31 | 2011-05-31 | Puncture needle cannula with opposite openings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201852320U CN202086545U (en) | 2011-05-31 | 2011-05-31 | Puncture needle cannula with opposite openings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202086545U true CN202086545U (en) | 2011-12-28 |
Family
ID=45361646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201852320U Expired - Fee Related CN202086545U (en) | 2011-05-31 | 2011-05-31 | Puncture needle cannula with opposite openings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202086545U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805659A (en) * | 2011-05-31 | 2012-12-05 | 浙江海洋学院 | Split-hole puncture needle cannula |
| CN103257053A (en) * | 2012-02-15 | 2013-08-21 | 刘苗生 | Self-deformation multi-axial puncture device |
-
2011
- 2011-05-31 CN CN2011201852320U patent/CN202086545U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805659A (en) * | 2011-05-31 | 2012-12-05 | 浙江海洋学院 | Split-hole puncture needle cannula |
| CN103257053A (en) * | 2012-02-15 | 2013-08-21 | 刘苗生 | Self-deformation multi-axial puncture device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MY155501A (en) | Injection needle assembly and drug injection device | |
| CN201492485U (en) | Laparoscope puncture device with operation channel | |
| JP2008522655A5 (en) | ||
| WO2006083954A3 (en) | Microtaper needle and method of use | |
| DE60232360D1 (en) | TROCAR WITH IMPROVED THREADDORF | |
| JP2012522572A5 (en) | ||
| WO2010106312A3 (en) | Improved downhole device | |
| CN202086545U (en) | Puncture needle cannula with opposite openings | |
| RU2014136479A (en) | SURGICAL NEEDLE | |
| CN204520902U (en) | A kind of antrum puncture needle | |
| CN102805659A (en) | Split-hole puncture needle cannula | |
| CN204364441U (en) | Non-ache acupuncture | |
| CN204671243U (en) | A kind of percutaneous needle of applicable B ultrasonic location | |
| CN208822954U (en) | A kind of adjustable incision knife of syringe needle | |
| CN210644138U (en) | Improved puncture outfit with lock catch and variable-diameter structure | |
| CN204543230U (en) | A kind of kidney fistulation sacculus dilating catheter | |
| CN2621615Y (en) | Pericardium puncture needle assembly | |
| CN204158462U (en) | A kind of bladder stoma puncture needle | |
| CN201586042U (en) | Urinary bladder puncturing sleeve needle | |
| CN104118655A (en) | Badminton ball puller | |
| CN202314862U (en) | Novel drainage needle | |
| CN110393557A (en) | Oral approach Undergoing Endoscopic Thyroidectomy lacuna tractor | |
| CN104490456A (en) | Segmental puncture needle | |
| CN211862929U (en) | Epidural puncture needle | |
| CN201668472U (en) | Abdominal puncture needle |
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: 20111228 Termination date: 20120531 |