CN208726433U - A kind of remaining needle - Google Patents
A kind of remaining needle Download PDFInfo
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- CN208726433U CN208726433U CN201721855257.0U CN201721855257U CN208726433U CN 208726433 U CN208726433 U CN 208726433U CN 201721855257 U CN201721855257 U CN 201721855257U CN 208726433 U CN208726433 U CN 208726433U
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- puncture needle
- shell
- needle
- hole
- cavity
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Abstract
The utility model discloses a kind of remaining needles, including inlying catheter component, puncture needle component and screening arrangement component；Puncture needle component includes puncture needle and the Paracentesis needle holder for being fixed on puncture needle end；Inlying catheter component includes catheter block；Screening arrangement component includes shell, shell is equipped with and axially penetrates through so that the through-hole that puncture needle passes through, shell is between catheter block and Paracentesis needle holder, shell periphery is equipped with can be along the folded tube axially folded, folded tube one end is connected with shell, the other end is connected with Paracentesis needle holder, and puncture needle passes through inside folded tube, and the total length of screening arrangement is greater than the length of puncture needle after folded tube expansion.Puncture needle can be received into completely in screening arrangement component by remaining needle provided by the utility model, and folded tube is used in screening arrangement component, folded tube can be folded between shell and Paracentesis needle holder when unused, be greatly reduced volume shared by screening arrangement component.
Description
Technical field
The utility model relates to disposable medical instrument technical fields, and in particular to a kind of remaining needle.
Background technique
Remaining needle is a kind of for repeatedly carrying out the medical instrument of infusion treatment within a certain period of time, generally comprises puncture
Needle is cased with inlying catheter on puncture needle.When in use, puncture needle punctures into blood vessel remaining needle together with inlying catheter, completes
After puncture, puncture needle is removed, and is only stayed in inlying catheter intravascular.
Inlying catheter material softness can prevent vein to be pierced, it is possible to reduce the sense of discomfort of patient.The use of remaining needle
Afterwards, the puncture needle being removed be easy to cause medical staff accidentally to touch outside being exposed to, and in this case, allows for medical staff and holds very much
The infection of the pathogen of various danger vulnerable to blood carrying.Medical staff will receive the danger such as unexpected needle thorn and promote to prevent
Needle pierces the exploitation of remaining needle, and the use of this anti-needle thorn remaining needle can prevent accidental needle and pierce.
In order to avoid exposed puncture needle damages medical staff, screening arrangement needs completely to shield puncture needle,
And the usual volume of screening arrangement that in the prior art can shield completely puncture needle is larger, brings not to medical staff's operation
Just.
Therefore, how to provide it is a kind of occupy small in size, easy to operate remaining needle, be that those skilled in the art need to solve
The technical issues of.
Utility model content
The purpose of the utility model is to provide a kind of remaining needle, puncture needle can be shielded completely, and small volume, side
Just it operates.
To achieve the above object, the utility model provides a kind of remaining needle, including inlying catheter component, puncture needle component and
Screening arrangement component；The puncture needle component includes puncture needle and the Paracentesis needle holder for being fixed on the puncture needle end；It is described to stay
Setting conduit tube component includes catheter block；
The screening arrangement component includes shell, the shell be equipped with axially penetrate through so that the puncture needle pass through it is logical
Hole, the shell are located at the catheter block and the Paracentesis needle holder, and the shell periphery is equipped with can be along the folding axially folded
Between pipe, described folded tube one end is connected with the shell, and the other end is connected with the Paracentesis needle holder, and the puncture needle passes through institute
It states inside folded tube, the total length of the screening arrangement is greater than the length of the puncture needle after the folded tube expansion.
Preferably, the catheter block is equipped with circumferential through hole, and the rear end of the through hole is first interface, described to wear
Pricker is pierced by from the through hole, and the shell is connected to the first interface, and institute can be limited by being equipped in the through hole
State the restriction device for puncturing pin position.
Preferably, the device that limits is batching pig.
Preferably, the limiting section to limit the batching pig axial displacement is equipped in the through hole.
Preferably, the screening arrangement component includes the fixed mechanism to connect the shell and the catheter block.
Preferably,
The fixed mechanism includes revolving fragment, rotary shaft, spring and the lug boss to the fixation shield assembly；
The boss is in the lateral wall of the catheter block；
The first cavity to be connected with the catheter block is equipped in the shell, the outside of first cavity is equipped with convex
Platform, the rotary shaft are fixed on the boss, and first cavity rear end is equipped with the second cavity, and second cavity is described
Via hole is equipped at second cavity and the ipsilateral side wall of the boss；
The revolving fragment includes revolving fragment ontology, and the rotating body is articulated with the rotary shaft, and the bending ontology is worn
It crosses the via hole to protrude into second cavity, revolving fragment ontology front end is equipped with the first folding that can catch on the lug boss
Turn of bilge, the rear end of the revolving fragment are equipped with the second bending part, and second bending part is equipped with when first bending part is caught on
So that the through-hole that the puncture needle passes through when the lug boss；
The spring is set in second cavity, when first bending part catches on the lug boss, the bullet
Spring is affixed with second bending part to be merged in compressive state.
Preferably, the shell port is equipped with described to close when the puncture needle is received into the folded tube
The locking device of first cavity.
Preferably, front end is equipped with the socket part to be socketed on the outside of second cavity on the Paracentesis needle holder.
Preferably, the width of the revolving fragment is greater than or equal to the diameter of the through-hole, and first bending part is detached from institute
After stating lug boss, the revolving fragment can interdict the through-hole.
Preferably, the length of the spring is greater than or equal to the length of second cavity.
A kind of screening arrangement in the prior art protects shell, the protection in order to shield puncture needle completely, using tubulose
Shell is installed on catheter block end, and protection outer cover length is greater than the length of puncture needle component, and it is big that this allows for remaining needle total length
In twice of needle length.
The catheter block end of remaining needle provided by the utility model is connected with screening arrangement shell, puncture needle self-shileding dress
It sets in the through-hole of shell and passes through, the peripheral part of screening arrangement shell is equipped with folded tube, and one end of folded tube is connected with Paracentesis needle holder,
The other end is connected with screening arrangement shell, after puncture needle extraction, folded tube expansion shielding puncture needle.Folded tube is rolled over when not in use
It is stacked in the peripheral part of shell, length is negligible, and the major function of screening arrangement shell is connection folded tube and conduit
Seat, length are much smaller than needle length, and after folded tube expansion, the total length of screening arrangement component is greater than the length of puncture needle
Degree, can shield completely puncture needle.
In addition, the utility model is provided with locking device also on screening arrangement, locking device can be received in puncture needle
The through-hole being included on screening arrangement rear enclosed shell, prevents puncture needle from stretching out from through-hole, generates threat to medical staff again,
Improve the safety of remaining needle.
Therefore, remaining needle screening arrangement provided by the utility model is under the premise of can shield puncture needle completely, body
Product is obviously reduced, and staff is facilitated to operate.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is a kind of structural schematic diagram of specific embodiment of remaining needle provided by the utility model；
Fig. 2 is the structural schematic diagram of puncture needle component in Fig. 1；
Fig. 3 is the cross-sectional view of screening arrangement component in Fig. 1；
Fig. 4 is the cross-sectional view of conduit tube component in Fig. 1；
Fig. 5 is a kind of appearance schematic diagram of remaining needle provided by the utility model；
Fig. 6 is the schematic diagram of screening arrangement components containing puncture needle.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In order to make those skilled in the art more fully understand the utility model, with reference to the accompanying drawing and specifically
The utility model is described in further detail for embodiment.
Fig. 1 to Fig. 6 is please referred to, Fig. 1 is that a kind of structure of specific embodiment of remaining needle provided by the utility model is shown
It is intended to；Fig. 2 is the structural schematic diagram of puncture needle component in Fig. 1；Fig. 3 is the cross-sectional view of screening arrangement component in Fig. 1；Fig. 4 is Fig. 1
The cross-sectional view of middle conduit tube component；Fig. 5 is a kind of appearance schematic diagram of remaining needle provided by the utility model；Fig. 6 is shielding dress
Set the schematic diagram of components containing puncture needle.
Remaining needle provided by the use of the new type, as shown in Figure 1, including conduit tube component 1, screening arrangement component 3 and puncture
Needle assemblies 2, screening arrangement component 3 is installed on the rear end of conduit tube component 1, after puncture needle component 2 is installed on screening arrangement component 3
End.Wherein, the direction of 21 courts of puncture needle be front end, with puncture needle 21 towards opposite one end be rear end.
Specifically, as shown in Fig. 2, puncture needle component 2 include Paracentesis needle holder 22 and puncture needle 21, the end of puncture needle 21 with
Paracentesis needle holder 22 is fixed；As shown in figure 3, screening arrangement component 3 includes shell 31, edge is axially arranged with perforative logical in shell 31
Hole, puncture needle 21 can be passed through from through-hole；As shown in figure 4, conduit tube component 2 includes catheter block 12, catheter block 12 is the threeway of y type
Structure, the main body and puncture needle 21 of catheter block 12 are coaxial, and the main body of catheter block 12 is equipped with axial through hole, 21 energy of puncture needle
Enough to pass through from through hole, the rear and front end of through hole is respectively second interface 122 and first interface 121, the master of catheter block 12
Body is equipped with lateral branch portion, and the branched hole being connected to through hole is equipped in branch portion, and the entrance of branched hole is third interface
123, shell 31 is connected on first interface 121, and conduit 11, third interface 123 and 14 phase of perfusion tube are connected in second interface 122
Even.
The peripheral part of shell 31 is equipped with folded tube 35, and 35 one end of folded tube is connected with shell 31, the other end and Paracentesis needle holder
22 are connected, and after folded tube 35 is unfolded, the total length of limiting device is greater than the length of puncture needle 21, this enables puncture needle 21 complete
It is received into screening arrangement component entirely.It is equipped in the through hole of catheter block 12 and limits device, limiting device can be by puncture needle 21
Position is fixed, and prevents puncture needle 21 from skidding off from through hole.In the present embodiment, device is limited as batching pig 13, batching pig 13
It is fixed in through hole, puncture needle 21 is passed through from batching pig 13, and the frictional force between batching pig 13 and puncture needle 21 defines
The axial position of puncture needle 21 limits device and is not limited only to batching pig 13, before other embodiments can also make through hole certainly
End is interference fitted with puncture needle 21, is limited by the frictional force between catheter block 12 and puncture needle 21.Puncture needle 21
The through-hole of shell 31, the through hole of catheter block 12 and conduit 11 are sequentially passed through, by Paracentesis needle holder 21, shell 31 and catheter block 12
Position carries out axial restraint, and folded tube 35 is folded between shell 31 and Paracentesis needle holder 21.
In the present embodiment, shell 31 is between Paracentesis needle holder 22 and catheter block 12, catheter block 12, shell 31 and puncture needle
Seat 22 carries out axial restraint by the frictional force between puncture needle 21 and batching pig 13, when puncture needle 21 is extracted out from batching pig 13,
Catheter block 12, shell 31 and Paracentesis needle holder 22 are disconnected.
In addition, the process of extraction puncture needle 21 may extract together batching pig 13 out, once batching pig 13 is from through hole
It is extracted, will cause remaining needle leakage and patient's blood back, therefore, to avoid batching pig 13 from being extracted, the present embodiment is in through hole
In be provided with limiting section, specifically, limiting section can be to be installed on stop collar or retention bead etc. on the outside of batching pig, stop collar or
Can be an integral structure between retention bead and catheter block 12 or by glue sticking, herein not to limiting section and catheter block 12 it
Between connection type be defined.
Remaining needle shape provided by the present embodiment as shown in figure 5, remaining needle during use, puncture needle 21 with lead
Pipe 11 penetrate together it is intravascular, complete puncture after, puncture needle component 2 is extracted from the rear of remaining needle, extraction puncture needle group
During part 2, Paracentesis needle holder 22 and shell 31 are detached from, and folded tube 35 is unfolded, and puncture needle 21 is taken out with Paracentesis needle holder 22
Out, it is received among folded tube 35, until puncture needle 21 is fully accommodated in screening arrangement component 3, by shell 31 from conduit
It is removed on seat 12.
Remaining needle provided by the present embodiment can shield puncture needle 21 in screening arrangement component 3 completely, so as to
Enough prevent puncture needle 21 from damaging to medical staff, and the primary structure to accommodate puncture needle 21 is folded tube 35, is folded
Pipe 35 is being folded between shell 31 and Paracentesis needle holder 22 before use, shared by small volume, facilitate medical staff to operate.
Screening arrangement component 3 is got loose with conduit tube component 1 in order to prevent, and fixation is used between catheter block 12 and shell 31
Mechanism is attached.In the present embodiment, fixed mechanism includes lug boss 124, revolving fragment 32, rotary shaft 33 and spring 34.It please join
Figure of description 1 and Figure of description 3 are examined, lug boss 124 is located at the lateral wall of catheter block 12.31 front end of shell is equipped with the first chamber
Body, the first cavity can be set in the outside of catheter block 12, and the outside of 31 first cavity of shell is equipped with boss, the shell of boss root
31 side wall of body is equipped with strip groove, and lug boss 124 is able to enter in the strip groove, and rotary shaft 33 is located in boss.In shell 31
The rear end of first cavity is equipped with the second cavity, and strip groove extends to the second cavity side wall, forms via hole, rotation in the second cavity side wall
Rotor 32 can pass through via hole and protrude into the second cavity, and spring 34 is axially arranged in the second cavity.Revolving fragment 32 includes curved
The revolving fragment main body of folding, revolving fragment main body are equipped with cyclic annular fixed part, pass through in 33 self-fixed department of rotary shaft, cut with scissors revolving fragment 32
It is connected to shell 31, revolving fragment body front end is equipped with the first bending part 321, and rear end is equipped with the second bending part 322, the first bending part
321 can catch on lug boss 124, and shell 31 and catheter block 12 are fixed；Second bending part 322 is equipped with relief hole, the
Two bending parts 322 pass through above-mentioned via hole with revolving fragment main body and protrude into the second cavity, when the first bending part 321 catches on lug boss
When 124, the second bending part 322, which is located at, to be approximately perpendicular on the position of shell axis, and puncture needle 21 passes through relief hole, puncture needle 21
Revolving fragment 32 can be prevented to rotate, so that shell 31 be made to fix stronger with catheter block 12.After puncture needle 21 is extracted,
Revolving fragment 32 rotates under the action of spring 34, and the first bending part 321 is disconnected with lug boss 124, makes screening arrangement component 3
It being capable of quick separating with conduit tube component 1.
Only a kind of specific embodiment of fixed mechanism provided by the present embodiment, in addition to this fixed mechanism can be with
Other forms are used, for example, torsionspring is arranged in rotary shaft 33, the both ends of torsionspring are respectively by the outside of the first cavity
Wall and revolving fragment clamp, and under spring force, the bending part of revolving fragment front end catches on lug boss, and revolving fragment rear end is more than
The part of rotary shaft is press section, and the press section for pressing revolving fragment can separate bending part and lug boss.It specifically refers to existing
The structure of clip in technology.
Puncture needle 21 be received into screening arrangement component 3 after structure as shown in fig. 6, puncture needle 21 is received in order to prevent
After being included in screening arrangement 3, is stretched out from the through-hole of shell 31 and stab medical staff, the present embodiment is also set in screening arrangement 3
Locking device is set, locking device can close the through-hole on shell 31, prevent puncture needle 21 from stretching out from through-hole, to medical care people
Member threatens.
Locking device is revolving fragment 32 in the present embodiment, and the width of revolving fragment is greater than the diameter of through-hole, when puncture needle 21 from
After extracting out in relief hole, spring 34 rotates revolving fragment, and then through-hole is interdicted, and referring to Figure of description 6, reaches closing and punctures
The purpose of needle 21.In addition to this, locking device can also use other forms, such as lattice block is arranged in the second cavity,
After puncture needle 21 is received into the second cavity, lattice block interdicts through-hole, to achieve the purpose that close puncture needle 21.
Revolving fragment is set again to stretch out puncture needle 21 because external force generates rotation in order to prevent, the spring in the present embodiment
34 length extended naturally are greater than or equal to the length of the second cavity, are pressed so spring 34 is located to be constantly in the second cavity
Contracting state, and revolving fragment 32 can not rotate under the action of being also constantly in spring force, to improve the peace of screening arrangement component 3
Full performance.
It should be noted that in the present embodiment, the second cavity has certain length, and on shell 31 through-hole diameter it is bigger
In the diameter of puncture needle 21, the space that puncture needle 21 moves radially in shell 31 is extremely limited, can not be from the second cavity wall
On via hole be pierced by.
In addition, Paracentesis needle holder 22 is equipped with the socket part of tubulose, and socket part can be sheathed on the second cavity in the present embodiment
Outside, socket part and shell 31 are interference fit, can prevent Paracentesis needle holder from causing remaining needle to damage with 31 accidental separation of shell
It is bad.The side of Paracentesis needle holder is equipped with the hand-held part for facilitating medical staff to operate.
In the present embodiment, screening arrangement component 3 is equipped with locking device, and locking device can prevent puncture needle 21 from through-hole
In stretch out again, to eliminate the risk of the screening arrangement component 3 after removing and puncture needle component 2.
It should be noted that in the present specification, such as first and second etc relational terms are used merely to one
Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual
Relationship or sequence.
Remaining needle provided by the utility model is described in detail above.Specific case used herein is to this
The principle and embodiment of utility model is expounded, the above embodiments are only used to help understand the utility model
Method and its core concept.It should be pointed out that for those skilled in the art, it is practical new not departing from this
Under the premise of type principle, several improvements and modifications can be made to this utility model, these improvement and modification also fall into this reality
With in novel scope of protection of the claims.
Claims (10)
1. a kind of remaining needle, including inlying catheter component (1), puncture needle component (2) and screening arrangement component (3)；The puncture
Needle assemblies (2) include puncture needle (21) and the Paracentesis needle holder (22) for being fixed on the puncture needle end；The inlying catheter component
It (1) include catheter block (12)；
It is characterized in that,
The screening arrangement component (3) includes shell (31), and the shell (31) is equipped with and axially penetrates through so that the puncture needle
(21) through-hole passed through, the shell (31) is between the catheter block (12) and the Paracentesis needle holder (22), the shell
(31) periphery is equipped with and can be connected along the folded tube (35) axially folded, described folded tube (35) one end with the shell (31),
The other end is connected with the Paracentesis needle holder (22), and the puncture needle (21) passes through the folded tube (35) inside, the folded tube
(35) total length of the screening arrangement is greater than the length of the puncture needle (21) after being unfolded.
2. remaining needle according to claim 1, which is characterized in that the catheter block (12) is equipped with axial through hole,
The rear end of the through hole is first interface (121), and the puncture needle is pierced by from the through hole, shell (31) connection
In the first interface (121), the restriction device that can limit the puncture needle (21) position is equipped in the through hole.
3. remaining needle according to claim 2, which is characterized in that the device that limits is batching pig (13).
4. remaining needle according to claim 3, which is characterized in that be equipped in the through hole to limit the batching pig
(13) limiting section of axial displacement.
5. remaining needle according to any one of claims 1 to 4, which is characterized in that the screening arrangement component (3) includes using
To connect the fixed mechanism of the shell (31) and the catheter block (12).
6. remaining needle according to claim 5, which is characterized in that
The fixed mechanism includes revolving fragment (32), rotary shaft (33), spring (34) and to the fixation screening arrangement component
(3) lug boss (124)；
The lug boss (124) is located at the lateral wall of the catheter block (12)；
The first cavity to be connected with the catheter block is equipped in the shell (31), the outside of first cavity is equipped with convex
Platform, the rotary shaft (33) are fixed on the boss, and first cavity rear end is equipped with the second cavity, second cavity, institute
It states and is equipped with via hole at the second cavity and the ipsilateral side wall of the boss；
The revolving fragment (32) includes revolving fragment ontology, and the rotating body is articulated with the rotary shaft (33), the revolving fragment
Ontology passes through the via hole and protrudes into second cavity, and revolving fragment ontology front end, which is equipped with, can catch on the lug boss
(124) rear end of the first bending part (321), the revolving fragment (32) is equipped with the second bending part (322), second bending part
It is equipped with when first bending part (321) catches on the lug boss (124) so that the resigning that the puncture needle (21) passes through
Hole；
The spring (34) is set in second cavity, when first bending part (321) catches on the lug boss (124)
When, the spring (34) is affixed with second bending part (322) to be merged in compressive state.
7. remaining needle according to claim 6, which is characterized in that shell (31) port, which is equipped with, works as the puncture needle
(21) to close the locking device of first cavity when being received into the folded tube (35).
8. remaining needle according to claim 6, which is characterized in that front end is equipped with to be socketed on the Paracentesis needle holder (22)
Socket part on the outside of second cavity.
9. remaining needle according to claim 7, which is characterized in that the width of the revolving fragment (32) is greater than or equal to described
The diameter of through-hole, after first bending part (321) is detached from the lug boss (124), the revolving fragment (32) can will be described
Through-hole blocking.
10. remaining needle according to claim 8, which is characterized in that the length of the spring (34) is greater than or equal to described
The length of second cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721855257.0U CN208726433U (en) | 2017-12-26 | 2017-12-26 | A kind of remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721855257.0U CN208726433U (en) | 2017-12-26 | 2017-12-26 | A kind of remaining needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208726433U true CN208726433U (en) | 2019-04-12 |
Family
ID=66020700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721855257.0U Active CN208726433U (en) | 2017-12-26 | 2017-12-26 | A kind of remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208726433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114904088A (en) * | 2022-06-01 | 2022-08-16 | 重庆大学附属肿瘤医院 | Remaining needle taking protection device |
-
2017
- 2017-12-26 CN CN201721855257.0U patent/CN208726433U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114904088A (en) * | 2022-06-01 | 2022-08-16 | 重庆大学附属肿瘤医院 | Remaining needle taking protection device |
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