CN201987527U - Disposable injection needle for endoscope - Google Patents
Disposable injection needle for endoscope Download PDFInfo
- Publication number
- CN201987527U CN201987527U CN2010206721843U CN201020672184U CN201987527U CN 201987527 U CN201987527 U CN 201987527U CN 2010206721843 U CN2010206721843 U CN 2010206721843U CN 201020672184 U CN201020672184 U CN 201020672184U CN 201987527 U CN201987527 U CN 201987527U
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- Prior art keywords
- bar
- chamber
- interior
- pipe
- section
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Abstract
The utility model discloses a disposable injection needle for an endoscope, comprising an outer rod, an inner rod, an inner tube, a needle head, an outer tube, a sleeve and a guide locating sleeve, wherein at least one first limit structure playing a role in axially locating the inner rod is arranged on the wall of a guiding cavity of the guide locating sleeve, and a second limit structure matched with the first limit structure so as to play the role in axially locating the inner rod is arranged on a contact part of an inserting segment and the wall of the guiding cavity of the guide locating sleeve. The guide locating sleeve provided by the utility model moves front and back, thus the extension length of the needle head is controlled, namely, the depth of the needle head pierced in an operation part can be controlled in the operation process. Due to the actions of the first limit structure and the second limit structure, after the inner rod is pushed in place, that is to say, the needle head is pushed in place, the axial position of the inner rod cannot change, that is to say, the extension length of the needle of the needle head in the operation process has no change, thus, the operation difficulty is lowered, and the operation quality and the safety of a patient are ensured.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly a kind of disposable scope entry needle.
Background technology
Scope develops to orientation treatment from simple inspection clinically at present, and the entry needle that is used for therapeutic endoscopy is divided into stainless steel helix tube entry needle and disposable plastic pipe entry needle again.The needle point extension elongation of two kinds of entry needles can only be determined before operation, once determining, just can not change in operation process again.Because equal infinite place device on stainless steel helix tube entry needle and the disposable plastic pipe entry needle, have only the product operation position of Elton (Japan) to be provided with a rubber ring, rely on the rubber ring elastic compression, make entry needle keep being relatively fixed, but because rubber ring is easily aging, follow the string, will be difficult for grasping with operator's experience in the use.
There is not to be provided with the structure of bar rotation in preventing between the interior bar of existing in addition stainless steel helix tube entry needle and disposable plastic pipe entry needle and the guide-localization cover, therefore bar is easy to generate rotation in when screwing in syringe, and the rotation of interior bar causes the interior conduit that leads to needle point to reverse, and makes troubles to use.
Moreover the interior bar of existing stainless steel helix tube entry needle and disposable plastic pipe entry needle is very easy to be extracted from outer bar, and inserts very trouble once more, causes entry needle not use easily and just scraps.
The utility model content
One of technical problem to be solved in the utility model is at the stainless steel helix tube entry needle of above-mentioned prior art and disposable plastic pipe entry needle, the needle point extension elongation changes easily in operation process, make troubles to operation, even the defective of failure, and a kind of needle point disposable scope entry needle that extension elongation does not change in operation process is provided.
Two of technical problem to be solved in the utility model is at the stainless steel helix tube entry needle of above-mentioned prior art and disposable plastic pipe entry needle, interior bar rotates when screwing in syringe easily, the defective that causes the interior conduit that connects needle point to reverse, and provide a kind of in bar non-rotary disposable scope entry needle when screwing in syringe.
Three of technical problem to be solved in the utility model is at the stainless steel helix tube entry needle of above-mentioned prior art and disposable plastic pipe entry needle, interior bar is pulled out easily, causes entry needle not have to use with regard to the defective of scrapping a kind of disposable scope entry needle is provided.
Technical scheme that technical problem to be solved in the utility model adopts is as follows:
Disposable scope entry needle comprises:
The interior bar of confession interior bar insertion chamber of inserting and the interior pipe that the interior pipe of appearance passes that one outer bar, described outer bar inside have coaxial line pass the chamber, and the end away from bar insertion chamber in described of described outer bar is provided with a step axle that is connected with outer tube;
The interior bar that one guide-localization cover, described guide-localization cover are inserted in the described outer bar inserts intracavity and by in the accent portion in axial restraint bar insertion chamber in described, is provided with bar passes in holding directed cavity and positioning chamber in the described guide-localization cover;
Bar in one, bar has injection portion, positioning section, insertion section and the interior pipe linkage section that connects successively in described, has an injecting cavity in the described injection portion, have pipe connection chamber and rustless steel connection tube insertion chamber in one in the interior pipe linkage section, have a connection chamber in insertion section and the positioning section, described interior pipe connection chamber connects injecting cavity by rustless steel connection tube insertion chamber, connection chamber; The insertion section of bar and interior pipe linkage section pass in the directed cavity of described guide-localization cover and the interior bar insertion chamber in the described outer bar of positioning chamber insertion in described, wherein the insertion section of an interior bar part contacts with the chamber wall of the directed cavity of described guide-localization cover, and positioning section cooperates the location with the positioning chamber of described guide-localization cover;
Pipe in one, described in an end of the pipe interior pipe that passes described outer bar pass in the interior pipe connection chamber that the chamber is connected described interior bar, the other end of interior pipe is fixed with syringe needle;
One rustless steel connection tube, an end of described rustless steel connection tube with described in pipe be connected described in a end in the interior pipe connection chamber of bar is connected, the other end insert described in rustless steel connection tube in the bar insert in the chamber and fix;
One outer tube, this outer tube sleeve are in described on the pipe, and an end of outer tube is provided with a end that pipe in the restriction is fixed with syringe needle and stretches out restriction reducing in the outer tube, on the step axle of the described outer bar of the other end;
One sleeve pipe, described sleeve pipe described outer tube is fixed on the step axle of described outer bar and described sleeve pipe by on the step axle of axial restraint bar outside described; It is characterized in that,
The chamber wall of the directed cavity of described guide-localization cover is provided with at least one bar in described is played first position limiting structure of axial location effect, described in bar insert part that section contacts with the chamber wall of the directed cavity of described guide-localization cover and be provided with to cooperate and work in order to described interior bar is played second position limiting structure of axial location effect with described first position limiting structure.
Because the effect of first position limiting structure and second position-limit mechanism, after interior bar is shifted the position onto, after just syringe needle is shifted the position onto, the axial location of interior bar can not change, the needle point extension elongation in operation process that is syringe needle does not change, thereby reduced operating difficulty, guaranteed operation quality and patient safety.
The radial section of described directed cavity is interior drum organization, the outer cydariform structure of the radial section of the insertion section of described interior bar, and inside and outside drum organization cooperates, when screwing in syringe, to prevent interior rod twisting.
Described first position limiting structure is arranged at least one inner plane of interior drum organization of described directed cavity, and described second position-limit mechanism is arranged on the outerplanar that bar inserts in the outer cydariform structure of section with described inner plane cooperates in described.
Described first position limiting structure is a groove, and second position limiting structure is a boss.Perhaps described first position limiting structure is a boss, and second position limiting structure is a groove.
The interior pipe linkage section of bar is provided with agnail near the position of inserting section in described, described agnail opens to inserting the section direction, because the existence of agnail, when the interior pipe linkage section of interior bar passes the guide-localization cover with insertion section part, agnail is compressed, and after the interior pipe linkage section of interior bar passes the guide-localization cover with insertion section part, agnail opens, add the guide-localization cover by axial restraint be limited in described in bar insert in the accent portion in chamber, like this in bar just can not extract by the guide-localization cover and from the interior bar insertion chamber of outer bar.
The inside and outside wall of pipe is provided with the fixed bit sags and crests in of the present utility model, is connected with the firm of interior bar with pipe in convenient, and pipe is connected with the firm of rustless steel connection tube in also making things convenient for.
Bar and outer bar position transparent configuration are observed the injection situation of medicinal liquid to make things convenient for patient and medical worker in of the present utility model.
The step axle of the described outer bar of this utility model is provided with the first axial retaining bulge loop, and described telescopic inwall is provided with the first axial retaining annular groove, in the time of on the above step axle of described casing pipe sleeve, the first axial retaining bulge loop snaps in the described first axial retaining annular groove, makes sleeve pipe by on the step axle of axial restraint bar outside described.
The inwall that the interior bar of the described outer bar of this utility model inserts the accent portion in chamber is provided with the second axial retaining annular groove, the outer wall of described guide-localization cover is provided with the second axial retaining bulge loop, when described guide-localization cover be inserted into described outside the interior bar of bar when inserting the accent portion in chamber, the second axial retaining bulge loop snaps in the described second axial retaining annular groove, makes guide-localization cover times axial restraint interior bar of bar outside described insert in the accent portion in chamber.
Description of drawings
Fig. 1 is the structural representation of the outer bar of this utility model.
Fig. 2 is the I place enlarged diagram of Fig. 1.
Fig. 3 is the II place enlarged diagram of Fig. 1.
Fig. 4 is the structural representation of bar in this utility model.
Fig. 5 is the A-A cutaway view of Fig. 4.
Fig. 6 is the right view of Fig. 4.
Fig. 7 is the connection diagram of this utility model syringe needle, interior pipe and rustless steel connection tube.
Fig. 8 is the structural representation of this utility model guide-localization cover.
Fig. 9 is the right view of Fig. 8.
Figure 10 is the structural representation of this utility model outer tube.
Figure 11 is the telescopic structural representation of this utility model.
Figure 12 is this utility model assembling sketch map.
The specific embodiment
For technological means, creation characteristic that this utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete accompanying drawing, further set forth this utility model.
Of the present utility model disposable scope entry needle as shown in figure 12 comprises outer bar 100, interior bar 200, interior pipe 300, syringe needle 400, outer tube 500, sleeve pipe 600 and guide-localization cover 700.
Referring to Fig. 1 to Fig. 3, outer bar 100 is a transparent configuration, and its inside has the interior bar insertion chamber 110 of coaxial line and passes chamber 120 with the interior pipe that the interior pipe of appearance passes, and the end away from interior bar insertion chamber 120 of outer bar 100 is provided with a step axle 130,140; Be arranged at intervals with the axial retaining annular groove 111 of twice on the inwall of the accent portion in the interior bar insertion chamber 110 of bar 100 outside; The step axle 140 of bar 100 is provided with together axially retaining bulge loop 141 outside.
Referring to Fig. 4 to Fig. 6, interior bar 200 is a transparent configuration, and it has injection portion 210, positioning section 220, insertion section 230 and the interior pipe linkage section 240 that connects successively.Has an injecting cavity 211 in the injection portion 210, have pipe connection chamber 241 and rustless steel connection tube insertion chamber 242 in one in the interior pipe linkage section 240, have a connection chamber 231 in insertion section 230 and the positioning section 220, interior pipe connection chamber 241 inserts chamber 242, connection chamber 231 connection injecting cavities 211 by the rustless steel connection tube.Interior pipe linkage section 240 at interior bar 200 is provided with agnail 243 near the position of inserting section 230, and agnail 243 opens to inserting section 230 directions.Insert the outer cydariform structure of radial section of section 230, respectively be provided with a boss 233 on 232 on two planes of drum organization.On the outer peripheral face of positioning section 220, be evenly equipped with eight wedge platforms 221.
Referring to Fig. 8 and Fig. 9, the outer wall of guide-localization cover 700 is provided with the axial retaining bulge loop 710 of twice, is provided with directed cavity 720 and positioning chamber 730 in the guide-localization cover 700.The radial section of directed cavity 720 is interior drum organization, respectively is provided with a groove 722 on two inner planes 721 of interior drum organization.
Referring to 7, interior pipe 300 is a long plastic tube, the one end is fixed with syringe needle 400, the other end is connected with rustless steel connection tube 310, the inside and outside wall of interior pipe 300 is provided with fixed bit sags and crests (not shown), be connected with the firm of interior bar 200 with pipe in convenient 300, manage 300 in also convenient and be connected with the firm of rustless steel connection tube 310.
Referring to Figure 10, an end of outer tube 500 is provided with the restriction reducing 510 that pipe 300 ends that are fixed with syringe needle 400 stretch out outer tube 500 in the restriction, and the other end is enlarging 520.
Referring to Figure 11, be provided with outer tube in the sleeve pipe 600 and pass chamber 610 and clamping chamber 620, on the inwall in clamping chamber 620, offer together axially retaining annular groove 621.
Disposable scope of the present utility model with the entry needle assemble method is: referring to Figure 12, an end that at first interior pipe 300 is connected with rustless steel connection tube 310 is inserted in the interior pipe connection chamber 241 of interior bar 200, the other end with rustless steel connection tube 310 is inserted in the rustless steel connection tube insertion chamber 242 of interior bar 200 simultaneously, apply glue with interior pipe connection chamber 241 junctions at interior pipe 300 again, after the glue dries, interior pipe 300 can be fitted together with interior bar 200.
The interior bar that guide-localization cover 700 is inserted into outer bar 100 inserts in the accent portion in chamber 110, up to guide-localization overlap the axial retaining bulge loop 710 of twice on 700 outer walls snap onto outside the interior bar of bar 100 insert in the axial retaining annular groove 111 of twice that is provided with at interval on the inwall of accent portion in chamber 110, guide-localization can be overlapped 700 and assemble with outer bar 100.
Using method of the present utility model is: during operation, interior bar 200 is inwardly moved back, interior bar 200 by interior pipe 300 with syringe needle 400 by stretching out in the outer tube 100, thrust intralesional exactly, boss 233 on interior bar 200 snaps onto in the groove 722 of guide-localization cover 700, positioning chamber 730 tight fits of eight wedge platforms 221 of the positioning section 220 of bar 200 and guide-localization cover 700 simultaneously, the extension elongation of syringe needle 400 is just located exactly, the medicinal liquid of annotating then, the injection situation that the doctor can observe medicinal liquids by transparent outer bar 100 and interior bar 200.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; this utility model is not restricted to the described embodiments; that describes in the foregoing description and the description just illustrates principle of the present utility model; this utility model also has various changes and modifications under the prerequisite that does not break away from this utility model spirit and scope, and these changes and improvements all fall in claimed this utility model scope.The claimed scope of this utility model is defined by appending claims and equivalent thereof.
Claims (10)
1. disposable scope entry needle comprises:
The interior bar of confession interior bar insertion chamber of inserting and the interior pipe that the interior pipe of appearance passes that one outer bar, described outer bar inside have coaxial line pass the chamber, and the end away from bar insertion chamber in described of described outer bar is provided with a step axle that is connected with outer tube;
The interior bar that one guide-localization cover, described guide-localization cover are inserted in the described outer bar inserts intracavity and by in the accent portion in axial restraint bar insertion chamber in described, is provided with bar passes in holding directed cavity and positioning chamber in the described guide-localization cover;
Bar in one, bar has injection portion, positioning section, insertion section and the interior pipe linkage section that connects successively in described, has an injecting cavity in the described injection portion, have pipe connection chamber and rustless steel connection tube insertion chamber in one in the interior pipe linkage section, have a connection chamber in insertion section and the positioning section, described interior pipe connection chamber connects injecting cavity by rustless steel connection tube insertion chamber, connection chamber; The insertion section of bar and interior pipe linkage section pass in the directed cavity of described guide-localization cover and the interior bar insertion chamber in the described outer bar of positioning chamber insertion in described, wherein the insertion section of an interior bar part contacts with the chamber wall of the directed cavity of described guide-localization cover, and positioning section cooperates the location with the positioning chamber of described guide-localization cover;
Pipe in one, described in an end of the pipe interior pipe that passes described outer bar pass in the interior pipe connection chamber that the chamber is connected described interior bar, the other end of interior pipe is fixed with syringe needle;
One rustless steel connection tube, an end of described rustless steel connection tube with described in pipe be connected described in a end in the interior pipe connection chamber of bar is connected, the other end insert described in rustless steel connection tube in the bar insert in the chamber and fix;
One outer tube, this outer tube sleeve are in described on the pipe, and an end of outer tube is provided with a end that pipe in the restriction is fixed with syringe needle and stretches out restriction reducing in the outer tube, on the step axle of the described outer bar of the other end;
One sleeve pipe, described sleeve pipe described outer tube is fixed on the step axle of described outer bar and described sleeve pipe by on the step axle of axial restraint bar outside described; It is characterized in that,
The chamber wall of the directed cavity of described guide-localization cover is provided with at least one bar in described is played first position limiting structure of axial location effect, describedly inserts part that section contacts with the chamber wall of the directed cavity of described guide-localization cover and is provided with to cooperate with described first position limiting structure and works in order to described interior bar is played second position limiting structure of axial location effect.
2. disposable scope entry needle as claimed in claim 1 is characterized in that the radial section of described directed cavity is interior drum organization, the outer cydariform structure of the radial section of the insertion section of described interior bar, and inside and outside drum organization cooperates, to limit interior rod twisting.
3. disposable scope entry needle as claimed in claim 2, it is characterized in that, described first position limiting structure is arranged at least one inner plane of interior drum organization of described directed cavity, on the outerplanar that described second position-limit mechanism is arranged in the described outer cydariform structure of inserting section with described inner plane cooperates.
4. as claim 1 or 2 or 3 described disposable scope entry needles, it is characterized in that described first position limiting structure is a groove, second position limiting structure is a boss.
5. as claim 1 or 2 or 3 described disposable scope entry needles, it is characterized in that described first position limiting structure is a boss, second position limiting structure is a groove.
6. as claim 1 or 2 or 3 described disposable scope entry needles, it is characterized in that the interior pipe linkage section of bar is provided with agnail near the position of inserting section in described, described agnail opens to inserting the section direction.
7. as claim 1 or 2 or 3 described disposable scope entry needles, it is characterized in that the inside and outside wall of described interior pipe is provided with the fixed bit sags and crests.
8. as claim 1 or 2 or 3 described disposable scope entry needles, it is characterized in that described interior bar and outer bar position transparent configuration.
9. as claim 1 or 2 or 3 described disposable scope entry needles, it is characterized in that, the step axle of described outer bar is provided with the first axial retaining bulge loop, and described telescopic inwall is provided with the first axial retaining annular groove, in the time of on the above step axle of described casing pipe sleeve, the first axial retaining bulge loop snaps in the described first axial retaining annular groove, makes sleeve pipe by on the step axle of axial restraint bar outside described.
10. as claim 1 or 2 or 3 described disposable scope entry needles, it is characterized in that, the inwall that the interior bar of described outer bar inserts the accent portion in chamber is provided with the second axial retaining annular groove, the outer wall of described guide-localization cover is provided with the second axial retaining bulge loop, when described guide-localization cover be inserted into described outside the interior bar of bar when inserting the accent portion in chamber, the second axial retaining bulge loop snaps in the described second axial retaining annular groove, makes guide-localization cover times axial restraint interior bar of bar outside described insert in the accent portion in chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206721843U CN201987527U (en) | 2010-12-21 | 2010-12-21 | Disposable injection needle for endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206721843U CN201987527U (en) | 2010-12-21 | 2010-12-21 | Disposable injection needle for endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201987527U true CN201987527U (en) | 2011-09-28 |
Family
ID=44664039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206721843U Expired - Fee Related CN201987527U (en) | 2010-12-21 | 2010-12-21 | Disposable injection needle for endoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201987527U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105326510A (en) * | 2015-12-04 | 2016-02-17 | 龙涤 | Laparoscopic venous blood taking needle |
-
2010
- 2010-12-21 CN CN2010206721843U patent/CN201987527U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105326510A (en) * | 2015-12-04 | 2016-02-17 | 龙涤 | Laparoscopic venous blood taking needle |
| CN105326510B (en) * | 2015-12-04 | 2018-01-02 | 龙涤 | Vein blood taking needle under laparoscope |
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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: 20110928 Termination date: 20151221 |
|
| EXPY | Termination of patent right or utility model |