CN201855466U - Indwelling catheter with blood stopping valve - Google Patents
Indwelling catheter with blood stopping valve Download PDFInfo
- Publication number
- CN201855466U CN201855466U CN2010205773592U CN201020577359U CN201855466U CN 201855466 U CN201855466 U CN 201855466U CN 2010205773592 U CN2010205773592 U CN 2010205773592U CN 201020577359 U CN201020577359 U CN 201020577359U CN 201855466 U CN201855466 U CN 201855466U
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- Prior art keywords
- catheter
- main body
- feather valve
- hollow plug
- inlying
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Abstract
An indwelling catheter with a blood stopping valve comprises a catheter main body, a catheter part, an elastic valve and a hollow plug, wherein the catheter main body has a rear end used for connecting a connector; the catheter part is positioned at a far end of the catheter main body; the elastic valve is arranged at the inner part of the catheter main body; and the hollow plug is arranged on the elastic valve in a sliding manner and is supported by the elastic valve in the sliding manner. The elastic valve is used for stopping blood before the elastic valve is connected on the connector. When the connector is inserted in the catheter main body, the connector pushes the hollow plug is pushed by the connector to push and switch on the elastic valve immediately.
Description
Technical field
The present invention relates to the inlying catheter of the band haemostatic valve of a kind of hemodialysis of being used for, transfusion or blood transfusion, more particularly, relate to a kind of inlying catheter with haemostatic valve, it can be connected to moment of infusion system at the operation syringe needle and with adapter, stops the outer blood of conduit to reflux.
The explanation of correlation technique
When the doctor wanted to carry out hemodialysis, transfusion or blood transfusion, he or she must at first import a conduit patient's blood vessel.Sometimes the doctor can install a syringe needle in conduit, and pierces through the patient with syringe needle and conduit subsequently.Only syringe needle is removed subsequently, and conduit is connected with infusion system etc. by suitable adapter.Yet, owing to remove syringe needle and be connected adapter and need considerable time, so considerable blood may be gone out from tube leaks in this process.
Of the present invention open
The objective of the invention is to address the above problem.
According to an aspect of the present invention, a kind of inlying catheter comprises: have the hollow tubing conductor main body of near-end and far-end, this near-end has the structure that connects and hold a connector; The catheter tube that cooperates with the far-end of catheter main body; Be installed on the feather valve of catheter main body inside, but this feather valve has the hole of elasticity opening and closing; And the hollow plug that is installed to this feather valve slidably and supports slidably by this feather valve, wherein catheter tube, feather valve and hollow plug are according to this order arranged in co-axial alignment; Wherein adapter inserts catheter main body promoting plug from the near-end of catheter main body, and plug is pushed feather valve and made its unlatching.
Brief Description Of Drawings
Fig. 1 is the longitudinal sectional view according to the inlying catheter of first embodiment of the invention, and it has been ready to insert in patient's body;
Fig. 2 is the longitudinal sectional view of inlying catheter that removes Fig. 1 of syringe needle;
Fig. 3 is the longitudinal sectional view of inlying catheter that connects Fig. 2 of adapter thereon;
Fig. 4 is the longitudinal sectional view of inlying catheter that removes Fig. 3 of adapter;
Fig. 5 is the longitudinal sectional view according to the inlying catheter of second embodiment of the invention, and it has been ready to insert in patient's body;
Fig. 6 is the longitudinal sectional view of inlying catheter that removes Fig. 5 of syringe needle;
Fig. 7 is the longitudinal sectional view of inlying catheter that connects Fig. 6 of adapter thereon;
Fig. 8 is the longitudinal sectional view of inlying catheter that removes Fig. 7 of adapter;
Fig. 9 is the longitudinal sectional view according to the inlying catheter of third embodiment of the invention, and it has been ready to insert in patient's body;
Figure 10 is the longitudinal sectional view of inlying catheter that removes Fig. 9 of syringe needle;
Figure 11 is the longitudinal sectional view of inlying catheter that connects Figure 10 of adapter thereon; And
Figure 12 is the longitudinal sectional view of inlying catheter that removes Figure 11 of adapter.
The detailed description of embodiment
Referring to Fig. 1-4, will describe the first embodiment of the present invention in detail below.
As shown in Figure 1, inlying catheter A according to first embodiment of the invention has: hollow tubing conductor main body 1, be seated in the catheter tube 2 among the support 1b of pipe portion of catheter main body 1 far-end, be installed on the feather valve 3 of catheter main body 1 inside, and be installed to the hollow plug 4 in the catheter main body 1 slidably.This hollow plug 4 cooperates feather valve 3 slidably and is supported slidably by this feather valve 3.Catheter tube 2, feather valve 3 and fill in 4 with this order co-axially align.
Catheter main body 1 is made by resin or materials similar and in a tubular form.Inner surface 1a is tapered towards far-end with the diameter that reduces gradually.
The transparent or semitransparent material of catheter main body 1 preferred employing is made, thereby inside is shown, so that check internal motion.
Preferably, has lubricant coating on the whole or part of catheter tube 2, so that reduce by inserting skin or inserting the resistance that blood vessel brings.
When plug 4 and syringe needle 5 when not inserting valve opening 3, valve opening 3a is the sealing watertight, thereby can realize stopping blooding.When plug 4 was inserted valve opening 3, valve opening 3a opened forward and opens, and made the rear end of catheter tube 2 and catheter main body 1 be communicated with.
Define a plurality of gap 3c between the inner surface 1a of the outward flange of feather valve 3 and catheter main body 1.Far-end space and the near-end space divided by feather valve 3 are interconnected by gap 3c.Therefore, along with air passes through gap 3c, feather valve 3 can slide smoothly.
The front end of tubular portion 4a cut sth. askew penetrates the valve opening 3a of feather valve 3 to help it, and this tubular portion 4a is supported slidably by the circular protrusion 3b of feather valve 3.
The inlying catheter A of present embodiment is used for this situation as shown in Figure 1, and wherein the front end of syringe needle 5 is outstanding from the front end of catheter tube 2.Under such state, syringe needle 5 passes feather valve 3, realizes that watertight therebetween connects the seepage that also therefore prevents blood.
Inlying catheter A is in this state inserted patient's body.Subsequently, as shown in Figure 2, syringe needle 5 is removed and pipe portion 2 is retained in patient's body.When removing syringe needle 5, the feather valve 3 that is remained on correct position by circular protrusion 1e is still keeping in the catheter main body 1, thereby feather valve 3 cuts out to keep hemostasis.
Subsequently, insert adapter 6 from the rear end of catheter main body 1.When adapter 6 was pressed in the catheter main body 1, adapter 6 promoted to be positioned at the plug 4 of its front end.Therefore fill in 4 to front slide, with the valve opening 3a that pushes the feather valve 3 that is positioned at its front end and make its unlatching.Subsequently as shown in Figure 3, push feather valve 3 and stop it towards the inner surface of catheter main body 1 conical cavity 1c and move, thereby make and be communicated with between the pipe of catheter tube 2 and intravenous drip etc.By by interference fit, the cone-shaped inner surface 1a of catheter main body 1 allows between the level and smooth insertion of adapter 6 and adapter 6 outer surface 6a and the inner surface 1a by tight contact the in the interference fit.Plug 4 closely contact with feather valve 3, and the outer surface 6a of adapter 6 closely contacts with the inner surface 1a of catheter main body 1, thereby realization is stopped blooding safely.
Referring to Fig. 5-8, second embodiment of the present invention will be described.In these figure, adopt identical reference number show with first embodiment in substantially the same parts.Different or new parts are referring to new reference number.
Inlying catheter B according to second embodiment has the structure identical with inlying catheter A, and further comprise with plug 4 bias voltages to feather valve 3 rightabout helical springs 7.Helical spring 7 is made and is installed in feather valve 3 and fills between 4 by elastomeric material.
Subsequently as shown in Figure 8, remove adapter 6, and make plug 4 be returned to its initial position by the biasing force of helical spring 7.Thereby therefore feather valve 3 cuts out and realizes hemostasis.That is, the removing of adapter 6 do not need to be used for hemostatic operates especially, but can keep hemostasis reliably.
Referring to Fig. 9-12, the third embodiment of the present invention has been described.In these figure, adopt identical reference number show with first embodiment in substantially the same parts.Different or new parts are referring to new reference number.
Inlying catheter C according to the 3rd embodiment has the structure identical with inlying catheter A, and further have alternative helical spring 7 be used for plug 4 bias voltages to feather valve 3 rightabout corrugated tubes 8.Corrugated tube 8 is made and is installed in feather valve 3 and fills between 4 by elastomeric material.
The afterbody of adapter 6 from catheter main body 1 inserted to come by tamponade 4 with the biasing force with respect to corrugated tube 8.Fill in 4 front end subsequently and penetrate the valve opening 3a of feather valve 3, thereby the connection between catheter tube 2 and the dropper (or it is similar) is provided, as shown in figure 11.
Subsequently as shown in figure 12, remove adapter 6, and make plug 4 be returned to its initial position by the biasing force of corrugated tube 8.Thereby therefore feather valve 3 cuts out and realizes hemostasis.That is, the removing of adapter 6 do not need to be used for hemostatic operates especially, but can keep hemostasis reliably.
Though the present invention has carried out foregoing description with reference to the specific embodiment of invention, the present invention is not limited to the foregoing description.According to above-mentioned instruction, the those skilled in the art can also make amendment and is out of shape the foregoing description.
Claims (7)
1. inlying catheter comprises:
Hollow tubing conductor main body with near-end and far-end, described near-end have the structure that connects and hold a connector;
Be installed to the catheter tube of the far-end of described catheter main body;
Be installed on the feather valve of catheter main body inside, but described feather valve has the hole of elasticity opening and closing; And
The hollow plug that is installed to described feather valve slidably and supports slidably by described feather valve, wherein said catheter tube, described feather valve and described hollow plug are by this order arranged in co-axial alignment;
Wherein adapter inserts described catheter main body promoting described hollow plug from the near-end of described catheter main body, and described hollow plug is pushed described feather valve and made its unlatching.
2. inlying catheter according to claim 1, wherein said catheter main body has the inner surface of the taper of being configured as.
3. inlying catheter according to claim 1 wherein has one or more gaps between described feather valve and described catheter main body, to form air duct.
4. inlying catheter according to claim 1, wherein hollow plug prevents that slidably described hollow plug from skidding off from described catheter main body inside.
5. inlying catheter according to claim 1, wherein said feather valve has circular protrusion, and described hollow plug has the shoulder that engages with described circular protrusion slidably, thereby prevents that described hollow plug from skidding off from described feather valve.
6. inlying catheter according to claim 1 further comprises the biased element that is installed on described portion beyond the Great Wall, and described biased element applies bias voltage to the direction opposite with described feather valve to described hollow plug with hollow plug.
7. inlying catheter according to claim 6, wherein said biased element comprise corrugated tube or the turn of being made by elastomeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205773592U CN201855466U (en) | 2010-09-14 | 2010-09-14 | Indwelling catheter with blood stopping valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205773592U CN201855466U (en) | 2010-09-14 | 2010-09-14 | Indwelling catheter with blood stopping valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201855466U true CN201855466U (en) | 2011-06-08 |
Family
ID=44101286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205773592U Ceased CN201855466U (en) | 2010-09-14 | 2010-09-14 | Indwelling catheter with blood stopping valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201855466U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764164A (en) * | 2012-07-12 | 2012-11-07 | 北京兆仕医疗器械有限责任公司 | Sealing-free tube implanted administration device |
| WO2018133017A1 (en) * | 2017-01-20 | 2018-07-26 | 福建省百仕韦医用高分子股份有限公司 | Reusable indwelling cannula component for preventing blood backflow |
-
2010
- 2010-09-14 CN CN2010205773592U patent/CN201855466U/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764164A (en) * | 2012-07-12 | 2012-11-07 | 北京兆仕医疗器械有限责任公司 | Sealing-free tube implanted administration device |
| CN102764164B (en) * | 2012-07-12 | 2014-12-03 | 北京兆仕医疗器械有限责任公司 | Sealing-free tube implanted administration device |
| WO2018133017A1 (en) * | 2017-01-20 | 2018-07-26 | 福建省百仕韦医用高分子股份有限公司 | Reusable indwelling cannula component for preventing blood backflow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20130628 Decision number of declaring invalidation: 20894 Granted publication date: 20110608 |