CN108310536B - Retaining needle with annular clamping ring for preventing exposure of needle tube - Google Patents
Retaining needle with annular clamping ring for preventing exposure of needle tube Download PDFInfo
- Publication number
- CN108310536B CN108310536B CN201810008571.8A CN201810008571A CN108310536B CN 108310536 B CN108310536 B CN 108310536B CN 201810008571 A CN201810008571 A CN 201810008571A CN 108310536 B CN108310536 B CN 108310536B
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- China
- Prior art keywords
- needle
- annular
- tube
- clamping ring
- convex
- 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.)
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 18
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000009194 climbing Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 210000002460 smooth muscle Anatomy 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to a medical indwelling needle, in particular to an annular collar type indwelling needle capable of preventing exposure of a needle tube, which comprises an indwelling catheter component and a needle tube puncture component, and is characterized in that: the annular clamping ring is limited between the two convex clamps in a mode that the annular clamping ring can climb over the two convex clamps under the action of external force, the annular convex clamps are circumferentially arranged on the outer peripheral surface of one end of the annular clamping ring or continuously or intermittently distributed, the annular inner convex clamps are continuously or intermittently distributed on the inner peripheral surface of the other end of the annular clamping ring, the annular inner convex clamps are contacted on the outer peripheral surface of the inner ring body of the needle seat, and the annular clamping ring slides out of the clamping connection with the needle seat under the continued action of the needle withdrawing external force and becomes to form a buckling connection with a storage tube. The advantages are that: the connection of the receiving tube and the needle seat is improved, and the needle tube can be effectively restrained from swinging out of the receiving tube chute; the connection between the receiving tube and the needle seat is improved, and the receiving tube and the needle seat are not easy to separate.
Description
Technical Field
The invention relates to a medical indwelling needle, in particular to an annular retainer ring type indwelling needle capable of preventing a needle tube from being exposed.
Background
One existing technique for preventing exposure of a needle cannula is shown in fig. 1 and 2, which consists of an indwelling catheter assembly 1 and a needle cannula penetration assembly 2. The needle tube puncture assembly consists of a needle tube assembly 2.1 and a needle tube storage tube 2.2, wherein the needle tube assembly 2.1 comprises a needle seat and a needle tube, the needle seat comprises an inner ring body and an outer ring body which are coaxially distributed, the two ring bodies are fixedly connected through sliding ribs extending in the radial direction, the storage tube 2.2 is sleeved on the inner wall of the outer ring body in a penetrating way, and the needle tube is fixedly connected on a needle fixing body of the inner ring body. After the indwelling needle puncture tube placement is completed, the needle tube is withdrawn, the needle seat slides into the stop groove at the tail end of the receiving tube along the sliding groove 2.2.1 on the receiving tube of the needle tube, as shown in figure 2, as a certain gap is formed between the needle seat and the receiving tube in the radial direction, when the needle seat is broken towards the direction of the sliding groove of the receiving tube, the axis of the needle seat forms a certain included angle with the axis of the receiving tube, and the needle tube fixedly connected to the needle seat swings along with the needle seat, so that the needle point of the used needle tube can swing out of the sliding groove of the receiving tube, and the user is extremely easy to be stabbed. This is one of the disadvantages of the prior art. Another disadvantage is that: before the use of the retaining needle, the storage tube is inserted into the annular cavity on the needle seat and connected with the needle seat by damping, and the storage tube is easily pulled out of the needle seat by carelessness in the use process, so that the storage tube is required to be inserted back into the needle seat to be used for subsequently storing the needle tube.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the annular clamping ring type indwelling needle which can prevent the needle tube from being exposed by improving the connection of the accommodating tube and the needle seat and restraining the needle tube from swinging out of the accommodating tube sliding groove.
The object of the present invention is achieved by the following means.
The utility model provides a naked needle of keeping somewhere of annular rand formula prevention needle tubing, it includes keeps somewhere pipe subassembly and needle tubing puncture subassembly, and needle tubing puncture subassembly includes needle tubing subassembly and needle tubing storage tube, and needle tubing subassembly includes needle file and needle tubing, and the needle file includes two rings inside and outside rings of coaxial distribution, through radial extension's smooth muscle rigid coupling between two rings, storage tube wears to overlap between outer ring and the interior ring, and the needle tubing rigid coupling is on the solid needle body of ring including, and its constitution main points lie in: the needle holder is characterized by further comprising an annular clamping ring, the outer peripheral surface of the inner ring body of the needle holder is provided with a front convex card and a rear convex card along the axial direction at intervals, the axial distance between the front convex card and the rear convex card is matched with the thickness of the annular clamping ring, the annular clamping ring can climb over the two convex cards under the action of external force, the outer peripheral surface of one end of the annular clamping ring is provided with an annular convex card which is distributed continuously or at intervals along the circumferential direction, the inner peripheral surface of the other end of the annular clamping ring is provided with an annular inner convex card which is distributed continuously or at intervals, the inner cavity of the receiving tube is a stepped cavity with a large front part and a small rear part, the inner convex card is provided with a stepped shoulder, the axial distance between the annular inner convex card and the thickness of the annular clamping ring is matched with the thickness of the annular clamping ring, the annular convex card is contacted in the large cavity of the receiving tube, the annular inner convex card is contacted on the outer peripheral surface of the inner ring body of the needle holder, the annular convex card climbs over the annular inner convex card of the annular clamping ring of the receiving tube when the needle is withdrawn, the annular convex card is withdrawn from the annular clamp seat after the annular card is contacted with the annular inner convex card of the receiving tube, and the stepped inner convex card of the annular inner card is contacted with the stepped card of the receiving tube continuously under the action of the effect of withdrawing the annular clamp ring, and the annular convex card is withdrawn with the annular clamp ring continuously connected with the annular clamping ring.
Thus, the annular retainer ring shields the chute notch with a certain width, the needle seat slides until the needle seat slides into the stop card at the rear end of the storage tube, the needle tube is stored, and the needle tube is restrained from swinging outwards before the front end of the needle tube is beneficial to the front end of the retainer ring.
The object of the present invention can also be achieved by the following means.
The outer peripheral surface of the front end of the storage tube is provided with annular convex clamps which are distributed continuously or at intervals, the inner side of the outer ring body of the needle seat is provided with a stepped cavity and is provided with a stepped shoulder, the diameter of the front section is larger than that of the rear section, the front section can store the convex clamps at the front end of the storage tube and store the convex clamps at the larger front section, and the stepped shoulder is in stop contact with the annular convex clamps on the storage tube.
Thus, the receiving tube and the needle seat are not easy to separate due to the contact of the stop catch.
An elastic groove is penetrated through an inner peripheral surface of the outer ring body of the needle seat along the axial direction.
The elastic groove enables the outer ring body to be convenient for elastically deform under the action of external force, and is convenient to be sleeved with the storage tube when assembled, and climbs over the outer protruding clamp on the storage tube.
In summary, compared with the prior art, the invention has the following advantages: the connection of the receiving tube and the needle seat is improved, and the needle tube can be effectively restrained from swinging out of the receiving tube chute; the connection between the receiving tube and the needle seat is improved, and the receiving tube and the needle seat are not easy to separate.
Drawings
FIG. 1 is a schematic perspective view of an indwelling needle according to the prior art for preventing exposure of a needle tube;
FIG. 2 is a schematic perspective view of a prior art indwelling needle with needle tube prevented from being exposed after withdrawal;
FIG. 3 is a schematic perspective view of an indwelling needle with annular collar for preventing exposure of the needle tube according to the preferred embodiment of the present invention;
FIG. 4 is a schematic perspective view of the structure of the annular collar of FIG. 3;
FIG. 5 is a schematic perspective cross-sectional view of the structure of the annular collar of FIG. 3;
fig. 6 is a schematic perspective cross-sectional view of the receiving tube of fig. 3;
fig. 7 is a schematic perspective view of the structure of the needle hub of fig. 3;
fig. 8 is a front-to-back elevational view of the hub of fig. 3;
fig. 9 is a schematic perspective view of the structure of the annular collar type retaining needle for preventing the exposure of the needle tube after withdrawing the needle according to the preferred embodiment of the invention.
The invention is described in more detail below with reference to the accompanying drawings.
Detailed Description
Best mode for carrying out the invention:
referring to fig. 3-9, the annular collar type needle for preventing the needle tube from being exposed comprises an indwelling catheter component and a needle tube puncture component, wherein the needle tube puncture component comprises a needle tube component and a needle tube accommodating tube, the needle tube component comprises a needle seat and a needle tube, the needle seat comprises an inner ring body and an outer ring body which are coaxially distributed, the inner ring body and the outer ring body are fixedly connected through sliding ribs which extend radially, the accommodating tube is sleeved between the outer ring body and the inner ring body, the needle tube is fixedly connected on a needle fixing body of the inner ring body, the annular collar 2.3 is further included, the outer peripheral surface of the inner ring body of the needle seat is axially provided with front convex card 2.1.1 and rear convex card 2.1.2.1, 2.1.2 at intervals, the axial distance between the front convex card 2.1.1 and the rear convex card 2.1.2 is matched with the thickness of the annular collar 2.3, the annular collar 2.3 is limited between the two convex card 2.1.1.1 and 2.1.2 in a mode of climbing over the two convex cards under the action of external force, one end of the annular collar 2.3 is circumferentially provided with or is continuously or alternately distributed annular convex card 2.3.1, the inner peripheral surface of the other end is provided with annular inner convex clamps 2.3.2 which are distributed continuously or at intervals, the inner cavity of the accommodating tube is a stepped cavity with a large front part and a small rear part, the stepped cavity in front of the stepped shoulder 2.2.5 is provided with annular inner convex clamps 2.2.3 which are distributed continuously or at intervals, the axial distance between the annular inner convex clamps 2.2.3 and the stepped shoulder 2.2.5 is matched with the thickness of the annular clamping ring 2.3, the annular outer convex clamps 2.3.1 of the annular clamping ring 2.3 are sleeved in the large stepped cavity of the accommodating tube, the annular inner convex clamps 2.3.2 of the annular clamping ring are sleeved on the outer peripheral surface of the inner ring body of the needle seat, the annular clamping ring 2.3 which is retracted along with the needle seat when the needle is withdrawn firstly, the annular outer convex clamps 2.3.1 of the annular outer convex clamps climb over the annular inner convex clamps 2.2.3 of the accommodating tube, then the annular inner convex clamps 2.3.2.2 and the stepped shoulder 2.5 of the accommodating tube are stopped and are abutted, under the action of continuing to slide the annular clamping ring 2.3, and becomes fastened with the receiving tube. A step of
Referring to fig. 4 and 5, the collar is an annular ring with a certain width, wherein a plurality of thin convex cards 2.3.1 are arranged at the outer side of one end, the convex cards can be whole-circle thin flanges, and an annular inner convex card 2.3.2 is arranged at the inner side of the other end. When the clamping ring is assembled, the clamping ring is sleeved with the needle fixing body on the needle seat, and is clamped between the spacing convex clamps on the outer side axis of the needle fixing body.
Referring to fig. 6, the front section inner cavity of the needle tube storage tube is provided with a stepped cavity 2.2.2 with a certain length, the diameter of the stepped cavity is larger than that of the rear section inner cavity, the stepped shoulder 2.2.5 can block the rear end face of the clamping ring, the clamping ring is retained and cannot slide backwards, an annular inner convex clamp 2.2.3 is arranged at a certain distance from the stepped shoulder, and the clamping ring can be accommodated in the distance between the inner convex clamp and the stepped shoulder. The outer side of the front end of the storage tube is provided with an anti-separation convex clip 2.2.4.
Referring to fig. 7 and 8, the outer side of the needle fixing body on the needle seat is provided with a discontinuous front annular convex card 2.1.1, a certain distance from the front annular convex card and a plurality of rear convex cards 2.1.2, and the distance between the front convex card and the rear convex card is enough to accommodate the clamping ring. The inner side of the outer ring body of the needle seat is provided with a step cavity, the diameter of the front section is larger than that of the rear section, the front section can accommodate the outer convex clamp at the front end of the accommodating tube, and the step shoulder can clamp the outer convex clamp 2.2.4 on the accommodating tube. An elastic groove 2.1.3 is penetrated on the inner peripheral surface of the outer ring body of the needle seat along the axial direction, so that the needle seat is conveniently sleeved with the storage tube during assembly, and climbs over the outer convex clamp 2.2.4 on the storage tube.
And (3) assembling:
the collar is sleeved on the needle seat to fix the needle body, the collar is slightly pushed with force to enable the collar to climb over the intermittent annular convex card on the needle body, the collar is buckled between the front convex card and the rear convex card on the needle body, the needle tube is fixedly assembled and then assembled with the catheter component, finally, the front end of the needle tube containing tube faces the rear end face of the needle seat and is inserted into the annular cavity on the needle seat, the sliding groove on the containing tube is aligned with the sliding rib on the needle seat, the containing tube is forcibly inserted into the annular cavity and forms a pull-apart stop hook with the needle seat, the assembly is completed, as shown in figure 3,
when the retaining needle is used, the operation wing piece is held on the needle seat, after the needle puncture is successful, the puncture assembly is withdrawn, at this time, the needle tube is still retracted into the needle tube accommodating tube, the operation wing piece is held by hand, the other hand finger can prop against the rear end face of the accommodating tube, the accommodating tube is pushed forward, or the operation wing piece is held by hand, the rear end face of the accommodating tube faces the platform, the rear end face of the accommodating tube props against the platform, the needle seat slides slowly towards the platform direction, when the needle seat slides, the retainer ring sleeved on the needle fixing body slides along with the needle seat, slides for a certain distance, the thin outer convex card at the front end of the retainer ring props against the annular convex card in the accommodating tube, the retainer ring is driven by the needle seat to climb over the annular convex card in the accommodating tube, and then slides continuously, the rear end face of the retainer ring contacts against the stepped shoulder in the accommodating tube, the needle seat slides continuously, the retainer ring slides out of the retainer ring forms a buckling joint with the accommodating tube, the retainer ring slot with a certain width is shielded, the retainer ring slides again until the needle seat slides into the rear end of the accommodating tube, and the needle tube is completely locked by the retainer ring is completely, and the needle tube is completely locked by the retainer ring is just before the needle tube is completely locked by the retainer ring 9, and the needle tube is completely locked by the needle tube is just before the needle tube is completely held by the needle tube, and is just shown in front by the needle tube is shown in figure.
The invention is not described in part as in the prior art.
Claims (3)
1. The utility model provides an annular collar formula prevents naked remaining needle of needle tubing, it includes remaining catheter subassembly and needle tubing puncture subassembly, the needle tubing puncture subassembly includes needle tubing subassembly and needle tubing storage tube, the needle tubing subassembly includes needle file and needle tubing, the needle file includes two rings inside and outside of coaxial distribution, through radial extension's smooth muscle rigid coupling between two rings, storage tube wears to overlap between outer ring and inner ring, the needle tubing rigid coupling is on the solid needle body of inner ring, characterized by that still includes an annular collar, needle file inner ring outer peripheral face is provided with two protruding cards around along axial interval, the axial distance of two protruding cards around and the thickness matching of annular collar, annular collar can be limited between two protruding cards with climbing two protruding cards under the exogenic effect, annular collar one end outer peripheral face is provided with continuous or interval distribution's annular evagination card along circumference, the inner peripheral surface of the other end is provided with continuous or interval-distributed annular inner convex clamps, the inner cavity of the accommodating tube is a front large and rear small stepped cavity and is provided with a stepped shoulder, the large stepped cavity in front of the stepped shoulder is provided with continuous or interval-distributed annular inner convex clamps, the axial distance between the annular inner convex clamps and the stepped shoulder is matched with the thickness of the annular clamping ring, the annular outer convex clamping sleeve of the annular clamping ring contacts the large stepped cavity of the accommodating tube, the annular inner convex clamping sleeve of the annular clamping ring contacts the outer peripheral surface of the inner ring body of the needle seat, the annular clamping ring which is withdrawn along with the needle seat when the needle is withdrawn firstly climbs over the annular inner convex clamp of the accommodating tube, then the annular inner convex clamp of the annular inner convex clamp is in contact with the stepped shoulder of the accommodating tube for stopping, and the annular clamping ring slides out of the clamping joint with the needle seat and becomes the buckling joint with the accommodating tube under the continuous action of the external force of withdrawing the needle.
2. The retaining needle for preventing exposure of needle tube according to claim 1, wherein the outer peripheral surface of the front end of the receiving tube is provided with continuous or spaced annular protruding clips, the inner side of the outer ring body of the needle seat is provided with a stepped cavity and a stepped shoulder, the diameter of the front section is larger than that of the rear section, the protruding clips of the front end of the receiving tube are received in the larger front section, and the stepped shoulder is contacted with the stop clips of the annular protruding clips on the receiving tube.
3. The retainer-type needle of claim 1, wherein an elastic groove is formed in an inner circumferential surface of the outer ring body of the needle holder so as to extend in an axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810008571.8A CN108310536B (en) | 2018-01-04 | 2018-01-04 | Retaining needle with annular clamping ring for preventing exposure of needle tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810008571.8A CN108310536B (en) | 2018-01-04 | 2018-01-04 | Retaining needle with annular clamping ring for preventing exposure of needle tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108310536A CN108310536A (en) | 2018-07-24 |
| CN108310536B true CN108310536B (en) | 2023-11-21 |
Family
ID=62893004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810008571.8A Active CN108310536B (en) | 2018-01-04 | 2018-01-04 | Retaining needle with annular clamping ring for preventing exposure of needle tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108310536B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009288A (en) * | 2018-09-18 | 2018-12-18 | 杭州吉为医疗科技有限公司 | A kind of Skin stretching device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100560438B1 (en) * | 2005-10-17 | 2006-03-13 | 주식회사 삼정파인스 | Polymer material collar pipe |
| JP2007089909A (en) * | 2005-09-29 | 2007-04-12 | Terumo Corp | Protector and needle set |
| CN101146568A (en) * | 2005-03-24 | 2008-03-19 | 株式会社Jms | Indwelling needle device |
| CN204121526U (en) * | 2014-09-05 | 2015-01-28 | 广东百合医疗科技股份有限公司 | Safe type venous retaining needle |
| CN104707208A (en) * | 2015-01-29 | 2015-06-17 | 福建省百仕韦医用高分子股份有限公司 | Remaining needle with unilateral-seam protective sleeve |
| JP2015167837A (en) * | 2014-03-11 | 2015-09-28 | ニプロ株式会社 | needle assembly |
| CN208492850U (en) * | 2018-01-04 | 2019-02-15 | 福建省百仕韦医用高分子股份有限公司 | The remaining needle that annular snap ring type prevents needle tubing exposed |
-
2018
- 2018-01-04 CN CN201810008571.8A patent/CN108310536B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101146568A (en) * | 2005-03-24 | 2008-03-19 | 株式会社Jms | Indwelling needle device |
| JP2007089909A (en) * | 2005-09-29 | 2007-04-12 | Terumo Corp | Protector and needle set |
| KR100560438B1 (en) * | 2005-10-17 | 2006-03-13 | 주식회사 삼정파인스 | Polymer material collar pipe |
| JP2015167837A (en) * | 2014-03-11 | 2015-09-28 | ニプロ株式会社 | needle assembly |
| CN204121526U (en) * | 2014-09-05 | 2015-01-28 | 广东百合医疗科技股份有限公司 | Safe type venous retaining needle |
| CN104707208A (en) * | 2015-01-29 | 2015-06-17 | 福建省百仕韦医用高分子股份有限公司 | Remaining needle with unilateral-seam protective sleeve |
| CN208492850U (en) * | 2018-01-04 | 2019-02-15 | 福建省百仕韦医用高分子股份有限公司 | The remaining needle that annular snap ring type prevents needle tubing exposed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108310536A (en) | 2018-07-24 |
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