CN202982924U - Needleless connecting assembly - Google Patents
Needleless connecting assembly Download PDFInfo
- Publication number
- CN202982924U CN202982924U CN 201220584639 CN201220584639U CN202982924U CN 202982924 U CN202982924 U CN 202982924U CN 201220584639 CN201220584639 CN 201220584639 CN 201220584639 U CN201220584639 U CN 201220584639U CN 202982924 U CN202982924 U CN 202982924U
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- inner core
- valve casing
- valve seat
- taper
- slip inner
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Abstract
The utility model discloses a needleless connecting assembly. The needleless connecting assembly comprises a valve shell, an elastic piece and a valve seat and is characterized in that the lower end of the valve seat is provided with a guide pipe connecting head, the middle of the guide pipe connecting head is a splicing cavity matched with a transfusion guide pipe outer diameter, the top end of the guide pipe connecting head is provided with a cone-shaped sleeve pipe, the vale shell is sleeved on the outer side of the cone-shaped sleeve pipe, a gap cavity is reserved between the valve shell and the cone-shaped sleeve pipe, and the bottom of the valve shell is connected with the valve seat in sealing mode. The bottom of the cone-shaped sleeved pipe is radially provided with a guide flow hole, the guide flow hole communicates the gap cavity and the splicing cavity, and accordingly a liquid flow channel is formed. The upper end of the cone-shaped sleeve pipe is provided with a sliding inner core, the upper end of the sliding inner cone is connected with the valve shell in sealing mode, the lower end of the sliding inner core is connected in the cone-shaped sleeve pipe, and the elastic piece is arranged between the cone-shaped sleeve pipe and the sliding inner core. The needleless connecting assembly changes the valve seat structure, enables transfusion pipeline assembly to be more convenient, and improves working efficiency of medical workers.
Description
Technical field
This utility model relates to a kind of medical supplies, is specifically related to a kind of needleless connecting component.
Background technology
At present, need to infuse in the infusion process or when injecting, multiselect is with remaining needle or inlying catheter prolonged and repeatedly, its advantage has: 1. venous indwelling is stabbed little for blood vessel, effectively protect blood vessel, tube drawing is namely reusable by of short duration reparation, reduces the destruction to blood vessel; 2. venous detaining needle has reduced the patient's blood vessel puncture time, has alleviated patient's misery, reduces venothrombotic formation, has alleviated nurse's workload; 3. can keep the long time in blood vessel, can accomplish at any time venous transfusion for patients such as operation, neonate, critical, rescues, guarantee treatment; 4. during or changing position restless as the patient, be difficult for slippage and injured blood vessel.
Existing remaining needle generally includes indwelling needle part, conduit and has the connector of one or more passages, one end of conduit partly is connected with indwelling needle, the other end of conduit is communicated with connector, and the port of connector generally is equipped with calparine cap and seals.Such remaining needle needs repeated multiple times washing pipe, tube sealing in use, not only increases nursing work load, has also increased phlebitic incidence rate simultaneously.And in practical operation, no matter be transfusion device or syringe, when withdrawing from from remaining needle, the capital produces negative pressure and blood back, forms thrombosis, prevent that return blood occurs, just must advance lid pipe liquid in withdraw of the needle limit, limit, require the nurse to have than more rich operating experience, otherwise be difficult to obtain satisfied effect.
for solving the blood back problem, can solve by the structure that the class positive valve is set on connector, the needleless connector is the connector with positive valve commonly used at present, mainly by valve casing 101, valve rod 104, elastic component 103, valve seat 102 forms, described valve casing 101 and valve seat 102 are hollow structure, valve casing 101 is sheathed on valve seat 102 outsides, and be tightly connected with valve seat 102, described valve casing 101 upper ends are provided with the liquid inlet, valve seat 102 lower ends are provided with liquid outlet, be provided with liquid flow path between liquid inlet and liquid outlet, valve seat 102 upper ends are provided with slip inner core 105, described elastic component 103 is arranged between valve seat 102 and slip inner core 105, when pressing down slip inner core 105, the liquid flow path conducting, otherwise, slip inner core 105 reset passages are closed, realize the tube sealing effect.Valve casing 101 places, liquid inlet, upper end are provided with external screw thread 106, lead to threeway or two to connect, and are used for the input of liquid, valve seat 102 lower end liquid outlets are provided with female thread 107, be spirally connected with catheter adapter 108, this catheter adapter 108 is pegged graft with conduit 109 again, as shown in Figure 1.
As mentioned above, syndeton is complicated, needs a plurality of connectors just can complete the combination of whole tube for transfusion, affects on the one hand medical personnel's work efficiency, has increased on the other hand patient's transfusion cost, is disposable unit, and each material consumption of using is larger.
Summary of the invention
This utility model purpose is to provide a kind of needleless connecting component, by architecture advances, simplifies the structure, and assembles more conveniently, improves medical personnel's work efficiency, reduces resource consumption, reduces use cost.
for achieving the above object, the technical solution adopted in the utility model is: a kind of needleless connecting component, comprise valve casing, elastic component and valve seat, described valve casing and valve seat are hollow structure, valve casing is sheathed on outside valve seat, described valve casing upper end is provided with the liquid inlet, the valve seat lower end is provided with liquid outlet, be provided with liquid flow path between liquid inlet and liquid outlet, described valve seat lower end is a catheter connecting joint, be the grafting cavity that coordinates with the transfusion catheter external diameter in the middle of this catheter connecting joint, the top of described catheter connecting joint is provided with a taper, described valve casing is sheathed on outside this taper, be provided with spatia between the two, and the valve casing bottom is connected with described valve base sealing, the bottom of described taper radially offers pod apertures, this pod apertures is communicated with described spatia and described grafting cavity, consist of described liquid flow path, described taper upper end is provided with a slip inner core, and described slip inner core upper end and described valve casing are tightly connected, and its lower end is slidably connected in described taper, and described elastic component is arranged between this taper and slip inner core.
In technique scheme, described valve seat lower end is a catheter connecting joint, the top of described catheter connecting joint is provided with a taper, be the grafting cavity that coordinates with the transfusion catheter external diameter in the middle of this catheter connecting joint, catheter connecting joint, valve seat, 3 assemblies of pig tail catheter link together, and are structure as a whole.During with whole infusion pipeline combination, only need transfusion catheter is directly inserted in the middle plug-in unit cavity of catheter connecting joint, need not the connection of other connector, simplified a whole set of infusion pipeline building block and corresponding attended operation, improve medical personnel's work efficiency, reduce the transfusion material cost.
In technique scheme, described slip inner core upper end is provided with annular groove, is provided with sealing ring in this annular groove, consists of being tightly connected of described slip inner core and described valve casing.
In technique scheme, described slip inner core upper end is provided with annular convex rib, and this annular convex rib is connected with described valve casing inner wall sealing, and the interference fit that can adopt the plastics of two kinds of different hardness to produce forms the liquid sealing of annular convex rib and valve casing inwall.Specifically, can by heating, utilize the thermal change coefficient of two kinds of different materials after assembling, rear cooling and shaping, thus form good sealing property.Duroplasts can be selected polypropylene or Merlon, and flexible plastic can be selected polyethylene.
Another kind of technical scheme is, described elastic component is for having elastic elastic telescoping pipe, and this elastic telescoping Guan Yiduan is located at the bottom of described slip inner core, and the other end is butted on described taper inner bottom part.
In technique scheme, described elastic component is that the described slip inner core of a stage clip bottom is axially arranged with pressure spring slot, and described slip inner core bottom is provided with fixed leg, and described stage clip top is located in described pressure spring slot, and the bottom is sheathed on described fixed leg.
Above, the slip inner core is provided with sealing device, is tightly connected with valve casing, and elastic component one end is arranged between taper and slip inner core.During use, press down the slip inner core, sealing device separates with valve casing, and medicinal liquid enters from infusion port, directly enters tube for transfusion by liquid flow path.When transfusion finished, the slip inner core rose, and sealing device contacts sealing again with valve casing, realizes the tube sealing effect.
Because technique scheme is used, the advantage that this utility model compared with prior art has is:
1, this utility model valve seat lower end is the grafting cavity for coordinating with the transfusion catheter external diameter in the middle of a catheter connecting joint catheter connecting joint, transfusion catheter directly is plugged in the grafting cavity, compare with structure in the past, a plurality of connectors have been reduced, needleless connecting component is connected more simple with transfusion catheter, improve medical personnel's work efficiency, reduced patient's transfusion cost;
2, this utility model is simple in structure, is easy to realize.
Description of drawings
Fig. 1 is the background technology structural representation;
Fig. 2 is the structural representation of this utility model embodiment one;
Fig. 3 is the structural representation of this utility model embodiment two;
Fig. 4 is the structural representation of this utility model embodiment three.
Wherein: 1, valve casing; 2, elastic component; 3, valve seat; 4, catheter connecting joint; 5, grafting cavity; 6, taper; 7, spatia; 8, pod apertures; 9, slip inner core; 10, sealing ring; 11, pressure spring slot; 12, fixed leg; 13, annular convex rib; 101, valve casing; 102, valve seat; 103, elastic component; 104, valve rod; 105, slip inner core; 106, external screw thread; 107, female thread; 108, catheter adapter; 109, conduit.
The specific embodiment
Below in conjunction with drawings and Examples, this utility model is further described:
embodiment one: shown in Figure 2, a kind of needleless connecting component, comprise valve casing 1, elastic component 2 and valve seat 3, described valve casing 1 and valve seat 3 are hollow structure, valve casing 1 is sheathed on valve seat 3 outsides, described valve casing 1 upper end is provided with the liquid inlet, valve seat 3 lower ends are provided with liquid outlet, be provided with liquid flow path between liquid inlet and liquid outlet, described valve seat 3 lower ends are a catheter connecting joint 4, be the grafting cavity 5 that coordinates with the transfusion catheter external diameter in the middle of this catheter connecting joint 4, the top of described catheter connecting joint 4 is provided with a taper 6, described valve casing 1 is sheathed on this taper 6 outsides, be provided with spatia 7 between the two, and valve casing 1 bottom and described valve seat 3 are tightly connected, the bottom of described taper 6 radially offers pod apertures 8, this pod apertures 8 is communicated with described spatia 7 and described grafting cavity 5, consist of described liquid flow path, described taper 6 upper ends are provided with a slip inner core 9, described slip inner core 9 upper ends are provided with annular groove, be provided with sealing ring 10 in this annular groove, consist of being tightly connected of described slip inner core 9 and described valve casing 1, its lower end is slidably connected in described taper 6, described elastic component 2 is arranged between this taper 6 and slip inner core 9, this elastic component 2 is that the described slip inner core of stage clip 9 bottoms are axially arranged with pressure spring slot 11, described slip inner core 9 bottoms are provided with fixed leg 12, described stage clip top is located in described pressure spring slot 11, the bottom is sheathed on described fixed leg 12.
During use, put the input pipe that let the acupuncture needle remain at a certain point and directly insert in the middle grafting cavity 5 of catheter connecting joint 4, because slip inner core 9 is tightly connected through sealing ring 10 and valve casing 1, when not infusing, form tube sealing; And when needs are infused, the tube for transfusion union joint presses down slip inner core 9, sealing ring 10 separates with valve casing 1, open the liquid flow path between taper 6 and valve casing 1, the gap of medicinal liquid between taper 6 and valve casing 1 radially offers pod apertures 8 through the bottom of taper 6, inflow is plugged in input pipe in catheter connecting joint 4, completes transfusion.After the tube for transfusion union joint is transferred to, under the elastic force of slip inner core 9 stage clips, be reset to valve casing 1 top, again form tube sealing.
Embodiment two: shown in Figure 3, a kind of needleless connecting component, in the present embodiment, its structure is substantially similar to embodiment one, and difference is: described slip inner core 9 upper ends are provided with annular convex rib 13, and this annular convex rib 13 is connected with described valve casing 1 inner wall sealing, saved the setting of sealing ring, directly realize sealing by the interference fit of annular convex rib 13 with valve casing 1 inwall, structure is more simplified, and is convenient to assembling.
Embodiment three, shown in Figure 4, a kind of needleless connecting component, in the present embodiment, its structure is substantially similar to embodiment two, and difference is: described elastic component 2 is for having elastic elastic telescoping pipe, this elastic telescoping Guan Yiduan is located at the bottom of described slip inner core 9, the other end is butted on described taper 6 inner bottom parts, and fixing, the elastic force that resets as slip inner core 9 with the stretching elasticity of elastic telescoping pipe.
Claims (5)
1. needleless connecting component, comprise valve casing, elastic component and valve seat, described valve casing and valve seat are hollow structure, valve casing is sheathed on outside valve seat, described valve casing upper end is provided with the liquid inlet, the valve seat lower end is provided with liquid outlet, be provided with liquid flow path between liquid inlet and liquid outlet, it is characterized in that: described valve seat lower end is a catheter connecting joint, be the grafting cavity that coordinates with the transfusion catheter external diameter in the middle of this catheter connecting joint, the top of described catheter connecting joint is provided with a taper, described valve casing is sheathed on outside this taper, be provided with spatia between the two, and the valve casing bottom is connected with described valve base sealing, the bottom of described taper radially offers pod apertures, this pod apertures is communicated with described spatia and described grafting cavity, consist of described liquid flow path, described taper upper end is provided with a slip inner core, and described slip inner core upper end and described valve casing are tightly connected, and its lower end is slidably connected in described taper, and described elastic component is arranged between this taper and slip inner core.
2. needleless connecting component according to claim 1 is characterized in that: described slip inner core upper end is provided with annular groove, is provided with sealing ring in this annular groove, consists of being tightly connected of described slip inner core and described valve casing.
3. needleless connecting component according to claim 1 is characterized in that: described slip inner core upper end is provided with annular convex rib, and this annular convex rib is connected with described valve casing inner wall sealing.
4. needleless connecting component according to claim 1, it is characterized in that: described elastic component is for having elastic elastic telescoping pipe, and this elastic telescoping Guan Yiduan is located at the bottom of described slip inner core, and the other end is butted on described taper inner bottom part.
5. needleless connecting component according to claim 1, it is characterized in that: described elastic component is that the described slip inner core of a stage clip bottom is axially arranged with pressure spring slot, described slip inner core bottom is provided with fixed leg, and described stage clip top is located in described pressure spring slot, and the bottom is sheathed on described fixed leg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220584639 CN202982924U (en) | 2012-11-08 | 2012-11-08 | Needleless connecting assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220584639 CN202982924U (en) | 2012-11-08 | 2012-11-08 | Needleless connecting assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202982924U true CN202982924U (en) | 2013-06-12 |
Family
ID=48554156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220584639 Expired - Fee Related CN202982924U (en) | 2012-11-08 | 2012-11-08 | Needleless connecting assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202982924U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014161410A1 (en) * | 2013-04-01 | 2014-10-09 | 江苏磐宇科技有限公司 | Needleless positive pressure connector |
| CN104784812A (en) * | 2015-04-29 | 2015-07-22 | 美昕医疗器械(昆山)有限公司 | Needleless sampling valve |
| CN105999470A (en) * | 2016-07-02 | 2016-10-12 | 河南驼人贝斯特医疗器械有限公司 | Needleless positive-pressure type indwelling needle |
| CN107970501A (en) * | 2016-10-25 | 2018-05-01 | 袁娜 | A kind of blood sampling connector and blood-taking device based on venous detaining needle |
| CN108721772A (en) * | 2017-04-14 | 2018-11-02 | 怡安医疗器材股份有限公司 | Needleless attachment device |
| CN110477931A (en) * | 2019-08-09 | 2019-11-22 | 王立盼 | A kind of blood collection device that clinical examination is easy to use |
| CN114177514A (en) * | 2015-06-08 | 2022-03-15 | 佩里宝有限公司 | Device for connecting a pipe connector to a fitting and for fastening or unfastening a closure cap |
-
2012
- 2012-11-08 CN CN 201220584639 patent/CN202982924U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014161410A1 (en) * | 2013-04-01 | 2014-10-09 | 江苏磐宇科技有限公司 | Needleless positive pressure connector |
| CN104784812A (en) * | 2015-04-29 | 2015-07-22 | 美昕医疗器械(昆山)有限公司 | Needleless sampling valve |
| CN114177514A (en) * | 2015-06-08 | 2022-03-15 | 佩里宝有限公司 | Device for connecting a pipe connector to a fitting and for fastening or unfastening a closure cap |
| CN105999470A (en) * | 2016-07-02 | 2016-10-12 | 河南驼人贝斯特医疗器械有限公司 | Needleless positive-pressure type indwelling needle |
| CN107970501A (en) * | 2016-10-25 | 2018-05-01 | 袁娜 | A kind of blood sampling connector and blood-taking device based on venous detaining needle |
| CN108721772A (en) * | 2017-04-14 | 2018-11-02 | 怡安医疗器材股份有限公司 | Needleless attachment device |
| CN110477931A (en) * | 2019-08-09 | 2019-11-22 | 王立盼 | A kind of blood collection device that clinical examination is easy to use |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20141108 |
|
| EXPY | Termination of patent right or utility model |