CN210020635U - Withdrawing needleless connector - Google Patents
Withdrawing needleless connector Download PDFInfo
- Publication number
- CN210020635U CN210020635U CN201920695268.XU CN201920695268U CN210020635U CN 210020635 U CN210020635 U CN 210020635U CN 201920695268 U CN201920695268 U CN 201920695268U CN 210020635 U CN210020635 U CN 210020635U
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- moving
- needleless connector
- pulling
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Abstract
The utility model discloses a withdrawing needleless connector, which comprises a connecting base, a moving part and a fixing part; the connecting base comprises a base section and a connecting section, and the moving piece is sequentially provided with a pulling section and a moving section in the direction far away from the base section; the base section is connected with an indwelling pipeline system, and the moving section is sleeved in the connecting section; an inner cavity is arranged between the base section and the moving section; a movable space is arranged between the fixing piece and the connecting section; the pulling section is pulled to enable the pulling section to move towards the direction far away from the connecting base at the movable space, so that the moving section is driven to move towards the direction far away from the base section, negative pressure is formed in the inner cavity, and blood is pumped 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, accompanies the complete life cycle of remaining needle, reduces simultaneously 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, a moving piece and a fixed piece;
the connecting base comprises a base section and a connecting section, and the moving piece is sequentially provided with a pulling section and a moving section in the direction far away from the base section;
the base section is connected with an indwelling pipeline system, and the moving section is sleeved in the connecting section;
an inner cavity is arranged between the base section and the moving section; a movable space is arranged between the fixing piece and the connecting section;
the pulling section is pulled to enable the pulling section to move towards the direction far away from the connecting base at the movable space so as to drive the moving section to move towards the direction far away from the base section, negative pressure is formed in the inner containing cavity, and blood drawing-back inspection is carried out through the formed negative pressure.
Preferably, the moving part further comprises a fixed section, and the fixed section is connected with the fixed part in a sealing manner.
Preferably, the fixed section is sleeved with a guide ring, and the guide ring is in clearance fit connection with the fixed section in the axial direction.
Preferably, the mobile piece further comprises an elastic body, and the elastic body is sleeved inside the mobile piece.
Preferably, a limiting boss is further arranged on the outer side of the moving section sleeved in the connecting section.
Preferably, the sleeve is arranged in the connecting section, a sealing groove is circumferentially arranged on the outer side of the moving section, a sealing ring is arranged in the sealing groove, and the sealing ring enables the moving section to be connected with the connecting section in a sealing manner.
According to the technical scheme, the withdrawing needleless connector has the advantages that an internal cavity is formed between the moving part and the connecting base, and a movable space is formed between the fixing part and the connecting section; inside appearance chamber and keeping somewhere pipe-line system and communicate through the base section, make the pulling section locate towards the in-process of keeping away from connection base's direction motion at the activity space when the pulling section, can make inside between base section and the moving member hold the chamber volume increase, inside appearance intracavity will form certain negative pressure so this moment, can accomplish the blood examination of taking out, and this operation passes through the utility model discloses a blood examination of taking out can be accomplished to no adapter of taking back self to need external source apparatus such as external syringe, and keep somewhere pipe-line system and be in the encapsulated situation all the time, can not bring the pollution consequently, the patient uses and keeps somewhere 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, 201-moving section, 202-pulling section, 203-fixing section, 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, and further comprises a fixing member 8, wherein the connection base 1 comprises a base section 101 and a connection section 102, the moving member 2 is sequentially provided with a pulling section 202 and a moving section 201 in a direction away from the base section 101, the base section 101 is communicated with an indwelling pipeline system, one end of the moving member 2 is sleeved in the connection section 102, and the other end of the moving member 2 is arranged outside the connection section 102; an inner cavity 3 is arranged between the moving section 201 sleeved in the connecting section 102 and the base section 101, and a movable space is arranged between the fixing piece 8 and the connecting section 102; a pot head of moving member 2 is established in linkage segment 102, thereby make and keep somewhere also intercommunication each other between pipe-line system and the moving member 2, pulling section 202 makes pulling section 202 locate towards the in-process of keeping away from connection base 1's direction motion in activity space, can make moving member 2 and linkage segment 102 take place relative displacement, thereby make the inside chamber 3 volume increase that holds between the two, under the condition that has certain leakproofness, inside chamber 3 will form certain negative pressure in so this moment, can accomplish the blood examination of taking out, this operation only needs the utility model discloses a back-pumping needleless connector self can accomplish the blood examination of taking out to need not to keep somewhere external instruments such as external syringe, pipe-line system is in the closed condition all the time, can not consequently bring the pollution, the patient uses and keeps somewhere the needle safer.
In an embodiment of the present invention, as shown in fig. 2, the moving member 2 further includes a fixed section 203, and the fixed section 203 is connected to the fixed member 8 in a sealing manner.
Further, the fixed section 203 is sleeved with a guide ring 4, and the guide ring 4 is in clearance fit connection with the fixed section 203 in the axial direction, so that when the pulling section 202 is pulled to move towards the direction away from the connecting base 1, the moving member 2 of the withdrawing needle-free joint can perform a certain relative axial movement through the guide ring 4.
In a specific embodiment of the present invention, the elastic body 9 is further included, the elastic body 9 is sleeved inside the moving member 2, when the pulling section 202 moves continuously in a direction away from the base section 101, the elastic body 9 disposed in the connecting section 102 and hermetically connected to the fixing member 8 generates compression deformation due to the bidirectional blocking of the fixing member 8 and the connecting section 201, and stores a certain elastic potential energy gradually, and simultaneously the volume of the internal cavity 3 formed between the moving member 2, the base section 101 and the connecting section 102 is also gradually increased to generate a certain negative pressure, when the pulling section 202 stops being pulled, the volume of the internal cavity 3 is not increased, the elastic potential energy of the elastic body 9 is not increased, at this time, if the pulling section 202 is given up to apply force, i.e. the pulling section 202 is released, then the elastic potential energy of the elastic body 9 is released, under the reverse pushing of the elastic force, the pull segment 202 will move closer to the base segment 101 for repositioning.
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, so when pulling section 202 in the activity space towards keeping away from connection base 1 motion, 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 back. 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, 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 (6)
1. The pumpback needleless connector is characterized by comprising a connecting base, a moving piece and a fixing piece;
the connecting base comprises a base section and a connecting section, and the moving piece is sequentially provided with a pulling section and a moving section in the direction far away from the base section;
the base section is connected with an indwelling pipeline system, and the moving section is sleeved in the connecting section;
an inner cavity is arranged between the base section and the moving section; a movable space is arranged between the fixing piece and the connecting section;
the pulling section is pulled to enable the pulling section to move towards the direction far away from the connecting base at the movable space so as to drive the moving section to move towards the direction far away from the base section, negative pressure is formed in the inner containing cavity, and blood drawing-back inspection is carried out through the formed negative pressure.
2. The withdrawal needleless connector of claim 1, wherein the movable member further comprises a fixed section, and the fixed section is sealingly connected to the fixed member.
3. The withdrawal needleless connector of claim 2, wherein the fixing section is externally sleeved with a guide ring, and the guide ring is in clearance fit connection with the fixing section in the axial direction.
4. The withdrawal needleless connector of claim 1, further comprising an elastomer, wherein the elastomer is disposed within the moveable member.
5. The needle-free retractable connector as claimed in claim 1, wherein a limiting boss is further provided on the outside of the moving section sleeved in the connecting section.
6. The needle-free retractable connector as claimed in claim 5, wherein a sealing groove is circumferentially formed on an outer side of the movable section sleeved in the connecting section, and a sealing ring is arranged in the sealing groove, so that the movable section and the connecting section are in sealing connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920695268.XU CN210020635U (en) | 2019-05-15 | 2019-05-15 | Withdrawing needleless connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920695268.XU CN210020635U (en) | 2019-05-15 | 2019-05-15 | Withdrawing needleless connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210020635U true CN210020635U (en) | 2020-02-07 |
Family
ID=69365596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920695268.XU Active CN210020635U (en) | 2019-05-15 | 2019-05-15 | Withdrawing needleless connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210020635U (en) |
-
2019
- 2019-05-15 CN CN201920695268.XU patent/CN210020635U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200707 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. |