CN210355533U - Withdrawing needleless connector - Google Patents
Withdrawing needleless connector Download PDFInfo
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- CN210355533U CN210355533U CN201920696690.7U CN201920696690U CN210355533U CN 210355533 U CN210355533 U CN 210355533U CN 201920696690 U CN201920696690 U CN 201920696690U CN 210355533 U CN210355533 U CN 210355533U
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- side wall
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Abstract
The utility model discloses a pumpback needleless connector, wherein a connecting base is hermetically connected with a sealing base; the propelling part comprises a connecting section and a propelling section, the propelling section is arranged in the connecting base, one end of the connecting section is connected with the propelling section, and the other end of the connecting section penetrates through the side wall of the connecting base and is in clearance fit connection with the side wall of the connecting base; an exhaust hole is formed in the side wall, far away from the connecting section, of the connecting base; an inner cavity is arranged between the side wall of the connecting base, which is in contact with the connecting section, and the propelling section; the connecting section is pushed to drive the pushing section to move towards the direction of the exhaust hole, negative pressure is formed in the inner containing 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 examination 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, and a hand is pressed and is accomplished the blood examination of pumpback, makes things convenient for medical personnel to operate.
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 needleless connector of taking back has increased the blood examination function of taking back on the basis of the original function of needleless connector, uses with keeping somewhere the needle cooperation, accompanies the complete life cycle of keeping somewhere the needle, and the blood examination of taking back can be accomplished to a hand press, makes things convenient for medical personnel to operate, reduces the use amount of disposable consumptive material 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 propelling piece and a sealing base;
the connecting base is connected with the sealing base in a sealing manner;
the propelling part comprises a connecting section and a propelling section, the propelling section is arranged in the connecting base, one end of the connecting section is connected with the propelling section, and the other end of the connecting section penetrates through the side wall of the connecting base and is in clearance fit connection with the side wall of the connecting base;
an exhaust hole is formed in the side wall, far away from the connecting section, of the connecting base;
an inner cavity is arranged between the side wall of the connecting base, which is in contact with the connecting section, and the propelling section;
the connecting section is pushed to drive the pushing section to move towards the direction of the exhaust hole, negative pressure is formed in the inner containing cavity, and blood is pumped back for examination through the formed negative pressure.
Preferably, the propelling part further comprises a limiting section, the limiting section is axially connected with the connecting section, and the limiting section is arranged between the side wall of the connecting base, which is in contact with the connecting section, and the propelling section;
an inner containing cavity is arranged between the limiting section and the propelling section.
Preferably, the connecting base is provided with a limit boss on the direction of the propelling section moving towards the exhaust hole;
the limiting boss is arranged between the limiting section and the propelling section;
in the process of pushing the connecting section to drive the limiting section and the pushing section to move towards the exhaust hole, after the limiting boss blocks the movement of the limiting section, the volume of the inner containing cavity is increased to form negative pressure in the inner containing cavity, and blood is pumped back for examination through the formed negative pressure.
Preferably, a connecting hole is further formed in the connecting base between the limiting boss and the limiting section;
the connecting hole communicates the connecting base and the sealing base.
Preferably, the connecting device further comprises an elastic piece, and the elastic piece is sleeved on the periphery of the connecting section.
Preferably, the propelling part further comprises a pressing section, and the pressing section is connected with one end of the connecting section penetrating through the side wall of the connecting base.
Preferably, the elastic member is sleeved on the periphery of the connecting section between the pressing section and the limiting section.
According to the technical scheme, the pumpback needleless connector is characterized in that the connecting base is communicated with the indwelling pipeline system, and an internal cavity is arranged between the side wall of the connecting base, which is in contact with the connecting section, and the propelling section; promote the linkage segment and move towards the direction in exhaust hole in order to drive the propulsion segment, the propulsion segment is the axial clearance fit motion in connection base, inside holds the increase of chamber volume, form the negative pressure, can accomplish the blood examination of taking back, this operation can accomplish the blood examination of taking back through the needleless connector self of taking back of this patent, one hand is pressed and can be accomplished the blood examination of taking back, 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 consequently bring the pollution, 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-cavity section, 2-propelling part, 201-connecting section, 202-propelling section, 203-pressing section, 204-limiting section, 3-sealing base, 301-tail section, 4-exhaust hole, 5-internal cavity, 6-limiting boss, 7-connecting hole, 8-elastic part and 9-sealing part.
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 connecting base 1, a pushing member 2 and a sealing base 3; the connecting base 1 is hermetically connected with the sealing base 3; the propelling part 2 comprises a connecting section 201 and a propelling section 202, the propelling section 202 is arranged in the connecting base 1, one end of the connecting section 201 is connected with the propelling section 202, and the other end of the connecting section 201 penetrates through the side wall of the connecting base 1 and is in clearance fit connection with the side wall of the connecting base 1; an exhaust hole 4 is formed in the side wall of the connecting base 1 far away from the connecting section 201; an inner cavity 5 is arranged between the side wall of the connection base 1 in contact with the connection section 201 and the pushing section 202. The connecting base 1 is communicated with an indwelling pipeline system, the connecting section 201 penetrates through the side wall of the connecting base 1 and is in clearance fit connection with the side wall of the connecting base 1, so that the propelling part 2 can move axially depending on the side wall of the connecting base 1, a disposable product does not need to be replaced, further, the connecting base 1 comprises a base section 101 and a cavity section 102, one end of the base section 101 is communicated with the cavity section 102, the other end of the base section 101 is communicated with the indwelling pipeline system, and the propelling section 202 is arranged in the cavity section 102 and is in sealing connection with the cavity section 102; in the process of pushing the connecting section 201 to drive the pushing section 202 to move towards the exhaust hole 4, the air between the pushing section and the exhaust hole 4 is exhausted through the exhaust hole 4, because the pushing section is hermetically connected with the connecting base 1 and the connecting base 1 is communicated with the indwelling pipeline system, the volume of the inner cavity 5 arranged between the side wall of the connecting base 1 which is in contact with the connecting section 201 and the pushing section 202 is gradually increased, with a certain tightness, a certain negative pressure will then form in the interior volume 5, the blood drawing and returning examination can be completed, the operation only needs the drawing and returning needle-free joint of the patent to complete the blood drawing and returning examination, external devices such as an external syringe and the like are not needed, the indwelling pipeline system is always in a closed state, pollution is not caused, and the indwelling needle is safer to use by a patient.
In a specific embodiment of the present invention, the propelling part 2 further includes a limiting section 204, the limiting section 204 is axially connected to the connecting section 201, and the limiting section 204 is disposed between the side wall of the connection base 1 contacting the connecting section 201 and the propelling section 202; an internal cavity 5 is arranged between the limiting section 204 and the pushing section 202, in the process of pushing the connecting section 201 to drive the pushing section 202 to move towards the direction of the exhaust hole 4, the limiting section 204 is fixed, the volume of the internal cavity 5 between the limiting section 204 and the pushing section is gradually increased, under the condition of certain sealing property, a certain negative pressure is formed in the internal cavity 5, and blood is pumped back for checking through the formed negative pressure.
In a specific embodiment of the present invention, the connection base 1 is provided with a limit boss 6 on the movement of the propulsion section 202 toward the exhaust hole 4; the limiting boss 6 is arranged between the limiting section 204 and the propelling section 202; in the process of pushing the connecting section 201 to drive the limiting section 204 and the pushing section 202 to move towards the direction of the exhaust hole 4, although the limiting section 204 and the pushing section 202 can move simultaneously in the initial moving process, when the limiting section 204 moves to the position of the limiting boss 6, the limiting boss 6 blocks the further movement of the limiting section 204, and after the limiting boss 6 blocks the movement of the limiting section 204, the pushing section 202 continues to move towards the direction of the exhaust hole 4, at this time, the volume of the internal cavity 5 between the limiting section 204 and the pushing section 202 is gradually increased, then a certain negative pressure is formed in the internal cavity 5, and the blood is pumped back for checking through the formed negative pressure.
In a specific embodiment of the present invention, a connection hole 7 is further disposed on the connection base 1 between the limiting boss 6 and the limiting section 204; the connecting hole 7 communicates the connecting base 1 with the sealing base 3; in the process of pushing the connecting section 201 to drive the limiting section 204 and the pushing section 202 to move towards the direction of the exhaust hole 4, after the limiting boss 6 blocks the movement of the limiting section 204, the volume of the internal cavity 5 is increased to form negative pressure in the internal cavity 5, and blood is pumped back for examination through the formed negative pressure. The connecting hole 7 is arranged, so that when blood withdrawal examination is just started, the connecting hole 7 needs to be blocked to ensure that the inner cavity 5 can form negative pressure, therefore, the connecting section 201 is pushed to drive the limiting section 204 and the pushing section 202 to move, because the connecting hole 7 is arranged on the connecting base 1 between the limiting boss 6 and the limiting section 204, when the limiting section 204 moves to the connecting hole 7 or moves to the position between the connecting hole 7 and the limiting boss 6 and is blocked by the limiting boss 6, the limiting section 204 can block the connecting hole 7 or can ensure that no connecting hole 7 exists between the limiting section 204 and the inner cavity 5 between the pushing section 202, at the moment, along with the further pushing of the connecting section 201, the volume of the inner cavity 5 between the limiting section 204 and the pushing section 202 is gradually increased, and then certain negative pressure is formed in the inner cavity 5, the blood withdrawal examination is performed by the negative pressure, and it should be noted that the connecting hole 7 is provided to communicate the passage of the indwelling line and the passage of the infusion line during the resetting process after the blood withdrawal examination.
The utility model discloses a concrete embodiment, still include elastic component 8, elastic component 8 cover is established press section 203 with between the spacing section 204 the periphery of linkage segment 201 to with connection base 1 lateral wall sealing connection, press section 203 and wear to establish the one end of linkage segment 201 of connection base 1 lateral wall is connected, presses press the in-process of pressing section 203 in order to promote linkage segment 201, elastic component 8 takes place deformation. The pressing section 203 is arranged to further increase the pressing comfort and the operation flexibility, when the pressing section 203 is pressed to act on the connection section 201, the elastic member 8 sleeved outside the connection section 201 generates compression deformation due to the pushing of the pressing section 203 and the blocking of the limiting section 204, and a certain elastic potential energy is gradually stored, meanwhile, the volume of the internal cavity 5 formed between the limiting section 204 and the pushing end inside the connection base 1 is gradually increased along with the blocking of the limiting section 204 by the limiting boss 6, so that a certain negative pressure is generated in the internal cavity 5, when the pressing section 203 stops being pressed, the volume of the internal cavity 5 is not increased, the elastic potential energy of the elastic member 8 is not increased, at this time, if the pressing section 203 is given up to apply force, i.e. the pressing section 203 is released, the elastic potential energy of the elastic member 8 is released, under the reverse pushing of the elastic force, the elastic member 8 pushes the pressing section 203 to move towards the direction far away from the side wall of the connection base 1, at this time, if the position-limiting section 204 is fixed, the pushing section 202 will be reset due to the reaction elastic force of the elastic body, and if the position-limiting section 204 is in a movable state, the position-limiting section 204 and the pushing section 202 will be reset due to the reaction elastic force of the elastic body on the pressing section 203, and finally the elastic member 8 will be restored to the initial position, where it should be noted that the elastic member 8 may be a spring or a high-elasticity rubber, etc., as long as the same technical effect can be achieved.
In a specific embodiment of the utility model, still include sealing member 9, sealing member 9 cover is established in sealing base 3, and with sealing base 3's tail section 301 sealing connection. The sealing element 9 plays a role of a valve for communicating the indwelling pipeline and the infusion pipeline by the needleless connector.
To sum up, the utility model discloses a needleless connector of pumpback has increased the blood examination function of pumpback 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 a hand is pressed and is accomplished the blood examination of pumpback, and convenient operation, the blood examination in-process of pumpback keeps somewhere the 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 (7)
1. The pumpback needleless connector is characterized by comprising a connecting base, a propelling piece and a sealing base;
the connecting base is connected with the sealing base in a sealing manner;
the propelling part comprises a connecting section and a propelling section, the propelling section is arranged in the connecting base, one end of the connecting section is connected with the propelling section, and the other end of the connecting section penetrates through the side wall of the connecting base and is in clearance fit connection with the side wall of the connecting base;
an exhaust hole is formed in the side wall, far away from the connecting section, of the connecting base;
an inner cavity is arranged between the side wall of the connecting base, which is in contact with the connecting section, and the propelling section;
the connecting section is pushed to drive the pushing section to move towards the direction of the exhaust hole, negative pressure is formed in the inner containing cavity, and blood is pumped back for examination through the formed negative pressure.
2. The withdrawal needleless connector of claim 1, wherein the pushing member further comprises a stopper section axially connected to the connecting section, the stopper section being disposed between the connecting base side wall in contact with the connecting section and the pushing section;
an inner containing cavity is arranged between the limiting section and the propelling section.
3. The needle-free withdrawal connector according to claim 2, wherein the connection base is provided with a limit projection on the movement of the pushing section toward the exhaust hole;
the limiting boss is arranged between the limiting section and the propelling section;
in the process of pushing the connecting section to drive the limiting section and the pushing section to move towards the exhaust hole, after the limiting boss blocks the movement of the limiting section, the volume of the inner containing cavity is increased to form negative pressure in the inner containing cavity, and blood is pumped back for examination through the formed negative pressure.
4. The needle-free withdrawal connector according to claim 3, wherein a connecting hole is further formed in the connecting base between the limiting boss and the limiting section;
the connecting hole communicates the connecting base and the sealing base.
5. The withdrawal needleless connector of claim 2, further comprising an elastic member disposed around the periphery of the connecting section.
6. The needle-free retractable connector of claim 5, wherein the pushing member further comprises a pressing section connected to an end of the connecting section penetrating the side wall of the connecting base.
7. The withdrawal needleless connector of claim 6, wherein the elastic member is fitted around the outer periphery of the connection section between the pressing section and the stopper section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920696690.7U CN210355533U (en) | 2019-05-15 | 2019-05-15 | Withdrawing needleless connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920696690.7U CN210355533U (en) | 2019-05-15 | 2019-05-15 | Withdrawing needleless connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210355533U true CN210355533U (en) | 2020-04-21 |
Family
ID=70260283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920696690.7U Active CN210355533U (en) | 2019-05-15 | 2019-05-15 | Withdrawing needleless connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210355533U (en) |
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2019
- 2019-05-15 CN CN201920696690.7U patent/CN210355533U/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: 20200713 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. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211215 Address after: 110000 No. 2 Xinluo street, Hunnan District, Shenyang City, Liaoning Province Patentee after: Elephant Nutrition Supply Chain Management Co.,Ltd. Address before: 121000 No. 14, building 32, Jiefang East Road, Linghe District, Jinzhou City, Liaoning Province Patentee before: Yang Hui |