CN210542674U - Withdrawing needleless connector - Google Patents
Withdrawing needleless connector Download PDFInfo
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- CN210542674U CN210542674U CN201920696859.9U CN201920696859U CN210542674U CN 210542674 U CN210542674 U CN 210542674U CN 201920696859 U CN201920696859 U CN 201920696859U CN 210542674 U CN210542674 U CN 210542674U
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Abstract
The utility model discloses a pumpback needleless connector, which comprises a connecting base and a moving part; the connecting base comprises a base section and a connecting section, and an elastic body is sleeved in the moving piece; the base section is communicated with the indwelling pipeline system, one end of the moving member is sleeved in the connecting section and is in threaded connection with the connecting section, the other end of the moving member is arranged outside the connecting section, and an internal cavity is arranged between the moving member sleeved in the connecting section and the connecting section; the moving piece is rotated to move towards the direction far away from the base section so as to form negative pressure in the inner cavity, and blood is drawn back for examination through the formed negative pressure. The utility model discloses a needleless connector of pumpback has increased the blood test function of pumpback on the basis of the original function of needleless connector, uses with keeping somewhere the needle cooperation, accompanies keeping somewhere the complete life cycle of needle, reduces and keeps somewhere the external port pollution risk of needle.
Description
Technical Field
The utility model relates to the field of medical equipment, more specifically say, relate to a needleless connector of pumpback.
Background
In the field of medical appliance application, a needleless connector is a common accessory of an infusion apparatus, and is often used in combination with an indwelling needle to be used as a port for injecting liquid medicine, a wash pipe and the like after puncture.
The combined instrument of the 'remaining needle + needleless connector' needs to check whether a remaining needle catheter matched with the combined instrument is unobstructed by using a blood drawing-back mode in the using process, because the needleless connector has a single function, the operation generally adopts a syringe filled with saline to connect the remaining needle, the blood drawing-back inspection is carried out through manual drawing-back, after the inspection is finished, the syringe is flushed and sealed and removed, or the syringe is flushed and then the infusion operation is carried out, but the blood drawing-back inspection needs to use disposable consumables such as a disposable syringe or a prefilled catheter flusher, the cost is high, four actions of connection, drawing-back, injection and removal are needed, the operation is complicated, short-time exposure of a port can be avoided in the remaining needle pipeline in the connection and removal processes, and the port pollution risk is increased.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a no adapter of pumpback has increased the blood test function of pumpback on the basis of the original function of no adapter, uses with keeping somewhere the needle cooperation, accompanies the complete life cycle of keeping somewhere the needle, makes things convenient for medical personnel to operate, reduces the use amount of disposable consumptive materials such as pre-filled formula catheter flusher, practices thrift the medical expenditure, reduces simultaneously and keeps somewhere the external port pollution risk of needle.
In order to achieve the above object, the utility model provides a following technical scheme:
a pumpback needleless connector comprises a connecting base and a moving member;
the connecting base comprises a base section and a connecting section, and an elastic body is sleeved in the moving piece;
the base section is communicated with an indwelling pipeline system, one end of the moving member is sleeved in the connecting section and is in threaded connection with the connecting section, the other end of the moving member is arranged outside the connecting section, and an internal cavity is arranged between the moving member sleeved in the connecting section and the connecting section;
and the moving piece is rotated to move towards the direction away from the base section so as to form negative pressure in the inner cavity, and the formed negative pressure is used for blood drawing examination.
Preferably, a guide ring is arranged at the joint of the moving member and the connecting section, and the moving member is in clearance fit connection with the guide ring through threads.
Preferably, the device further comprises a fixing piece;
one end of the moving part arranged outside the connecting section is hermetically connected with the fixed part;
the fixing piece is rotated to enable the moving piece to move towards a direction far away from the base section, so that negative pressure is formed in the inner cavity, and blood drawing-back inspection is carried out through the formed negative pressure.
Preferably, the movable member is sleeved in the connecting section, a sealing groove is circumferentially arranged on the outer side of the movable member, a sealing ring is arranged in the sealing groove, and the movable member is in sealing connection with the connecting section through the sealing ring.
Preferably, the sealing groove and the sealing ring are provided with two.
According to foretell technical scheme, can know, the utility model discloses in, a needleless connector of pumpback, there is inside appearance chamber between moving member and the connection base, inside appearance chamber communicates through the base section with keeping somewhere pipe-line system, when the direction of keeping away from the base section is removed when rotating member, can make inside appearance chamber volume increase between base section and the moving member, inside appearance intracavity will form certain negative pressure this moment, can accomplish the blood examination of pumpback, this operation can accomplish the blood examination of pumpback through needleless connector self of pumpback of this patent, and need not external source apparatus such as external syringe, and keep somewhere pipe-line system and be in the encapsulated situation all the time, can not keep somewhere consequently and bring the pollution, the patient uses the needle safer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a needle-less connector for drawing back according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a needle-less connector for withdrawal in accordance with an embodiment of the present invention.
Wherein the reference numbers in the figures are as follows:
1-connecting base, 101-base section, 102-connecting section, 2-moving piece, 3-inner cavity, 4-guide ring, 5-limiting boss, 6-sealing ring, 8-fixing piece and 9-elastic body.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, fig. 1 is a schematic structural view of a needle-free connector for back suction according to an embodiment of the present invention; fig. 2 is a cross-sectional view of a needle-less connector for withdrawal in accordance with an embodiment of the present invention.
As shown in fig. 1-2, a withdrawing needleless connector comprises a connection base 1 and a moving member 2; the moving piece is internally sleeved with an elastic body 9; the connecting base 1 comprises a base section 101 and a connecting section 102, the base section 101 is communicated with an indwelling pipeline system, one end of the moving part 2 is sleeved in the connecting section 102 and is in threaded connection with the connecting section 102, the other end of the moving part is arranged outside the connecting section 102, and an internal cavity 3 is arranged between the moving part 2 sleeved in the connecting section 102 and the connecting section 102; by rotating the displacement element 2 in the direction away from the base section 101, a negative pressure is formed in the interior volume 3, by means of which a blood withdrawal check is carried out. An inner cavity 3 is arranged between the connecting base 1 and the moving part 2, the inner cavity 3 is communicated with the indwelling pipeline system through a base section 101, one end of the moving part 2 is sleeved in the connecting section 102, so that the indwelling pipeline system is communicated with the moving part 2, when the moving part 2 is rotated to move towards the direction far away from the connecting base 1, the moving part 2 and the connecting section 102 can be relatively displaced, so that the inner cavity 3 between the two is enlarged in volume, under the condition of certain sealing property, certain negative pressure is formed in the inner cavity 3 at the moment, the blood drawing inspection can be completed only by the needle-free connector for drawing self, external instruments such as an injector and the like are not needed, the indwelling pipeline system is always in a closed state, and pollution can not be caused, the patient uses the indwelling needle more safely, and it should be noted here that the indwelling pipeline system can be the indwelling needle, and can be a combination of the indwelling needle and the indwelling catheter, in order to make the needle-free connector for back-pumping better complete the operation of puncturing and back-pumping blood.
In a specific embodiment of the present invention, as shown in fig. 2, the present invention further comprises a fixing member 8; the moving part 2 arranged outside the connecting section 102 is connected with the fixed part 8 in a sealing way; make moving member 2 towards the direction removal of keeping away from base segment 101 through rotatory mounting 8, the increase of the volume of inside appearance chamber 3, and then form the negative pressure in inside appearance chamber 3, draw back blood inspection through the negative pressure that forms. Be provided with inside appearance chamber 3 between connection base 1 and moving member 2, inside appearance chamber 3 communicates through base section 101 with keeping somewhere pipe-line system, a pot head of moving member 2 is established in linkage segment 102, thereby make and keep somewhere also intercommunication between pipe-line system and the moving member 2, when moving towards the direction of keeping away from connection base 1 through rotatory mounting 8 in order to drive moving member 2, can make moving member 2 and linkage segment 102 take place relative displacement, thereby make 3 volume increases in inside appearance chamber between the two, under the condition that has certain leakproofness, so this moment will form certain negative pressure in the inside appearance chamber 3, can accomplish and take out the blood inspection.
In an embodiment of the present invention, as shown in fig. 2, a guiding ring 4 is disposed at the connection portion of the moving member 2 and the connecting section 102, and the moving member 2 and the guiding ring 4 are in clearance fit connection, so that a certain axial relative motion can occur between the moving member 2 and the connecting section 102 without the needle joint.
In a specific embodiment of the utility model, as shown in fig. 2, the cover is established in linkage segment 102 2 outside circumference of moving member is provided with the seal groove, be provided with sealing washer 6 in the seal groove, sealing washer 6 makes moving member 2 with linkage segment 102 sealing connection. In order to further increase the leakproofness of inside appearance chamber 3, through the seal groove that is provided with sealing washer 6 of seting up in moving member 2 circumference for moving member 2 can pass through sealing washer 6 sealing connection with linkage segment 102, when rotatory moving member 2 produced relative motion with linkage segment 102 so, inside appearance chamber 3 can guarantee to have better leakproofness when the volume increases, thereby be favorable to the formation of negative pressure, with the inspection of better completion blood of taking out. It should be noted here that the number of the sealing grooves and the sealing rings 6 is not specifically limited, as long as the effect of preventing the potential safety hazard and increasing the stability can be achieved, and the adaptability adjustment can be performed according to the length of the moving member 2 or the size of the internal cavity 3, for example, the sealing grooves and the sealing rings 6 are both designed as two double rings.
The utility model discloses a specific embodiment, as shown in FIG. 2, the cover is established in linkage segment 102 the moving member 2 outside still is provided with spacing boss 5, wherein do not do specifically limit to the number and the shape of spacing boss 5, can be one, two or more of symmetry, as shown in FIG. 2, spacing boss 5 sets up to two, and set up respectively in the both sides that are close to the groove edge of seal groove, of course, spacing boss 5 also can set up in the position of keeping away from seal groove edge, can be the rectangle to the specific shape of spacing boss 5, also can be cylindrical etc. as long as can play certain hardness and intensity support and reach the same technological effect can.
To sum up, the utility model discloses a needleless connector of pumpback has increased the blood of drawing back and has examined the function on the basis that does not influence its original function, follows the whole life cycle of keeping somewhere the needle, practices thrift the relevant expense of keeping somewhere the needle nursing, and convenient operation draws back the blood and examines the in-process, keeps somewhere pipe-line system and is in the encapsulated situation all the time, can not consequently bring the pollution, and the patient uses to keep somewhere the needle safer.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A pumpback needleless connector is characterized by comprising a connecting base and a moving piece;
the connecting base comprises a base section and a connecting section, and an elastic body is sleeved in the moving piece;
the base section is communicated with an indwelling pipeline system, one end of the moving member is sleeved in the connecting section and is in threaded connection with the connecting section, the other end of the moving member is arranged outside the connecting section, and an internal cavity is arranged between the moving member sleeved in the connecting section and the connecting section;
and the moving piece is rotated to move towards the direction away from the base section so as to form negative pressure in the inner cavity, and the formed negative pressure is used for blood drawing examination.
2. The withdrawal needleless connector of claim 1, wherein a guide ring is provided at the connection of the moving member and the connecting section, and the moving member is in threaded clearance fit connection with the guide ring.
3. The withdrawal needleless connector of claim 2, further comprising a fastener;
one end of the moving part arranged outside the connecting section is hermetically connected with the fixed part;
the fixing piece is rotated to enable the moving piece to move towards a direction far away from the base section, so that negative pressure is formed in the inner cavity, and blood drawing-back inspection is carried out through the formed negative pressure.
4. The needle-free retractable connector as claimed in claim 3, wherein a sealing groove is circumferentially formed on an outer side of the movable member fitted in the connecting section, and a sealing ring is disposed in the sealing groove, and the sealing ring sealingly connects the movable member and the connecting section.
5. The needle-free withdrawal connector according to claim 4, wherein there are two seal grooves and two seal rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920696859.9U CN210542674U (en) | 2019-05-15 | 2019-05-15 | Withdrawing needleless connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920696859.9U CN210542674U (en) | 2019-05-15 | 2019-05-15 | Withdrawing needleless connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210542674U true CN210542674U (en) | 2020-05-19 |
Family
ID=70666125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920696859.9U Active CN210542674U (en) | 2019-05-15 | 2019-05-15 | Withdrawing needleless connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210542674U (en) |
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2019
- 2019-05-15 CN CN201920696859.9U patent/CN210542674U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200709 Address after: No.14, building 32, Jiefang East Road, Linghe District, Jinzhou City, Liaoning Province Patentee after: Yang Hui Address before: 121299 Jinzhou, Lingling City, Liaoning Province, Daling River Street office, the northern side of the 102 line, Daling River Industrial Park Patentee before: JINZHOU NUODE MEDICAL INSTRUMENT TECHNOLOGY Co.,Ltd. |