CN113080957B - Positive pressure tube sealing joint and blood sampling remaining needle - Google Patents
Positive pressure tube sealing joint and blood sampling remaining needle Download PDFInfo
- Publication number
- CN113080957B CN113080957B CN202110387777.8A CN202110387777A CN113080957B CN 113080957 B CN113080957 B CN 113080957B CN 202110387777 A CN202110387777 A CN 202110387777A CN 113080957 B CN113080957 B CN 113080957B
- Authority
- CN
- China
- Prior art keywords
- hole
- sealing
- positive pressure
- tube sealing
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/15074—Needle sets comprising wings, e.g. butterfly type, for ease of handling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/155—Devices specially adapted for continuous or multiple sampling, e.g. at predetermined intervals
Abstract
The utility model provides a malleation tube sealing joint, relates to medical equipment technical field, and this malleation tube sealing joint includes first casing, be equipped with in the first casing and hold chamber and stock solution chamber, hold the chamber with be equipped with the tube sealing liquid valve on the pore of intercommunication between the stock solution chamber. The positive pressure tube sealing joint can quickly and conveniently inject tube sealing liquid into the extension tube to enable blood in the extension tube to flow back, so that automatic positive pressure tube sealing is realized, and the working efficiency is improved.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a positive pressure pipe sealing joint and a blood sampling remaining needle.
Background
The venous indwelling needle is also called as venous trocar. The core components include a flexible catheter/cannula that can be indwelling in a blood vessel, and a stainless steel puncture guiding stylet. When in use, the catheter and the needle core are punctured into a blood vessel together, after the catheter completely enters the blood vessel, the needle core is withdrawn, and only the soft catheter is kept in the blood vessel so as to carry out infusion treatment. The use of the indwelling needle can reduce the pain of the sick children caused by repeated venipuncture and the fear of injection, lighten the anxiety of parents, facilitate clinical medication, help the critical patients to take medicine for emergency treatment, lighten the workload of nurses and reduce the pain of the sick children, thereby the intravenous indwelling needle is widely applied clinically.
Venous blood sampling is a common nursing operation in clinical nursing work, and is also one of the main techniques for assisting doctors in diagnosing and treating diseases. And most hospitals use disposable blood taking needles when taking blood at present, abandon immediately after the blood taking is finished, if need to gather the blood for the second time again then need to puncture blood sampling again, this both obviously increases the painful of patient's repeated puncture, has aggravated medical personnel's work burden again.
The venous indwelling needle has the function of blood collection, so that the puncture times of a patient can be reduced, the pain of the patient is further reduced, and the working efficiency is improved. However, after the blood collection is completed by using the venous indwelling needle, blood is reserved in the extension tube and the connector, and if there is no time interval with the subsequent transfusion, the blood in the extension tube can be flushed back by using the input liquid. If the transfusion can not be carried out immediately after blood sampling, the tube needs to be sealed by positive pressure, otherwise, the blood can be coagulated in the extension tube to block the extension tube. In severe cases, the flushing of the coagulated blood back into the patient can cause thrombosis and create medical accidents. The traditional positive pressure tube sealing method needs to disassemble the joint, and nursing staff manually injects tube sealing liquid, so that the working efficiency is low.
Therefore, there is a need for a positive pressure tube sealing joint that can quickly and conveniently inject a tube sealing liquid into an extension tube to allow blood in the extension tube to flow back.
Disclosure of Invention
The invention provides a positive pressure tube sealing joint aiming at the technical problems in the prior art, which can quickly and conveniently inject tube sealing liquid into an extension tube, so that blood in the extension tube flows back, and the working efficiency is improved.
In order to achieve the technical purpose, the positive pressure pipe sealing joint comprises a first shell, wherein a containing cavity and a liquid storage cavity are arranged in the first shell, and a pipe sealing liquid valve is arranged on a pore passage communicated between the containing cavity and the liquid storage cavity.
Further, a plug body is arranged in the liquid storage cavity, the plug body is slidably and hermetically connected with the liquid storage cavity, and a tube sealing liquid is stored in a cavity between the plug body and the tube sealing liquid valve.
The liquid storage device further comprises a liquid storage spring, wherein one end of the liquid storage spring abuts against the plug body, and the other end of the liquid storage spring abuts against the first shell; when the tube sealing liquid valve is opened, the liquid storage spring is used for providing elastic force for injecting the tube sealing liquid into the accommodating cavity.
Further, still be equipped with the breathing hole on the first casing, the one end of breathing hole with the cavity intercommunication at stock solution spring place, the other end extends to and communicates with the outside air.
Further, the tube sealing liquid valve is used for opening or closing the pore channel.
Further, the pipe sealing liquid valve comprises a valve body in threaded connection with the first shell, and a sealing cone capable of blocking the pore passage is arranged at the front end of the valve body.
Further, still be equipped with the fluid infusion hole on the first casing, the one end in fluid infusion hole with stock solution chamber intercommunication, the other end extend to the first casing outside.
Furthermore, a one-way valve is arranged on the liquid supplementing hole and used for limiting the one-way flow of the tube sealing liquid in the liquid supplementing hole from the outer orifice of the liquid supplementing hole to the liquid storage cavity.
Furthermore, a sealing rubber plug is arranged on an outer side orifice of the liquid supplementing hole.
Further, the tube sealing liquid is normal saline.
Further, the pore canal includes first hole and second hole, first hole and stock solution chamber intercommunication, second hole and hold the chamber intercommunication.
Further, a spiral groove is formed in the inner wall of the second inner hole.
Further, in the direction from the liquid storage cavity to the circulation hole, the aperture of the second inner hole is gradually reduced, and the aperture of the second inner hole is gradually reduced, so that the pipe sealing liquid can be further improved to enter the annular groove.
The application also discloses a blood-taking remaining needle adopting the positive pressure tube sealing joint,
the utility model provides a needle is kept somewhere in blood sampling, includes needle body portion, blood sampling portion and foretell malleation tube sealing joint who connects in order, and needle body portion is used for the puncture to get into human blood vessel, and needle body portion keeps somewhere the joint and keeps somewhere extension pipe that the articulate, keeps somewhere the joint and is connected with malleation tube sealing joint. The positive pressure tube sealing joint has a closed state and an open state, and is in the open state when medicines are injected into a human body or blood is sampled; when the blood sampling part or the infusion tube is separated from the positive pressure tube sealing joint, the positive pressure tube sealing joint is in a closed state, and the medicine or blood is prevented from flowing out. Blood sampling portion and transfer line with the malleation seals the union coupling and can dismantle the connection, blood sampling portion with during the malleation seals the union coupling, malleation seals the union coupling and is the open mode, blood sampling portion with during the separation of malleation seal the union coupling, malleation seal the union coupling and is the encapsulated situation.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
the positive pressure tube sealing joint can quickly and conveniently inject tube sealing liquid into the extension tube, so that blood in the extension tube flows back, and the working efficiency is improved. During the use, under the condition that seals a tub liquid valve and open, when the cock body downstream, the cock body can hold the chamber with sealing a tub liquid extrusion income, and then lets the blood backward flow in malleation seal coupling and the extension pipe, avoids blood to condense. The pipe sealing liquid valve is used for opening or closing the pore channel, the opening of the pipe sealing liquid valve is adjustable, and further the flow speed of the pipe sealing liquid entering the accommodating cavity can be adjusted according to the requirement;
in the scheme of one embodiment of the invention, the spiral groove is arranged in the second inner hole, when the tube sealing liquid is injected, the tube sealing liquid enters the annular groove and the through hole in a certain spiral direction, so that the tube sealing liquid is beneficial to pushing blood to further reduce the elasticity requirement of the liquid storage spring in the application, on the other hand, steps and certain sharp-corner positions exist on the flow paths of the annular groove and the through hole, the blood at the positions is difficult to be pushed back to the body of a blood-sampled patient by the tube sealing liquid, and then the blood is remained at the edges of the steps and the certain sharp-corner positions, and the blood loses activity or even has pathological changes and the like to cause major medical accidents for a long time; when the tube is sealed after the infusion is finished, the retention time of some liquid medicines in vitro is too long, and the quality change phenomenon also exists, so the risk of the residual quality change of the medicine in vitro can be greatly reduced after the tube is sealed by adopting the scheme of the application.
Drawings
FIG. 1 is a schematic view showing the structure of a blood collection indwelling needle according to an embodiment;
FIG. 2 is a schematic structural view of a positive pressure tube sealing joint in the blood collection indwelling needle according to the embodiment;
FIG. 3 is a schematic view showing a blood collecting part of a blood collecting indwelling needle according to an embodiment;
FIG. 4 is a schematic view showing an assembled structure of a positive pressure sealing tube joint and a blood collection part in the blood collection indwelling needle according to the embodiment;
FIG. 5 is a schematic structural view of a blood collection indwelling needle according to another embodiment;
FIG. 6 is a schematic structural diagram of a positive pressure pipe sealing joint according to an embodiment of the present invention;
FIG. 7 is an enlarged view of a portion of FIG. 6 at A;
FIG. 8 is an enlarged view of a portion of the sealing bead;
figure 9 is an enlarged partial view of the second bore at the time the second bore is provided with a helical groove,
description of the reference numerals
1-needle body part, 101-indwelling joint and 102-extension tube;
2-positive pressure sealing pipe joint, 201-first shell, 202-piston, 203-reset spring, 204-connecting pipe, 205-first sealing ring, 206-second sealing ring, 207-third sealing ring, 208-annular groove, 209-circulation hole, 210-conical protrusion, 211-sealing inner hole, 212-sealing body, 213-plug body, 214-accommodating cavity, 215-liquid storage cavity, 216-plug body, 217-liquid storage spring, 218-first inner hole, 219-second inner hole, 220-pipe sealing liquid valve, 221-sealing cone body, 222-sealing section, 223-thread section, 224-handle, 225-fourth sealing ring, 226-thread hole, 227-liquid supplementing hole, 228-sealing bead, 229-sealing spring, 230-sealing rubber plug, 231-breathing hole, 232-spiral groove;
3-blood collection part, 301-second shell, 302-internal protrusion, 303-conical groove, 304-drainage hole, 305-through hole, 306-blood collection needle, 307-protective sleeve.
Detailed Description
Other objects and advantages of the present invention will become apparent from the following explanation of the preferred embodiments of the present application.
Example 1
As shown in figure 1, the blood sampling indwelling needle comprises a needle body part 1, a positive pressure tube sealing joint 2 and a blood sampling part 3 which are connected in sequence, wherein the needle body part 1 is used for puncturing and entering a human vein, the needle body part 1 comprises an indwelling joint 101 and an extension tube 102 connected with the indwelling joint 101, and the indwelling joint 101 is used for being connected with the positive pressure tube sealing joint 2. The positive pressure pipe sealing joint 2 has a closed state and an open state, and when medicine is injected into a human body or blood is sampled, the positive pressure pipe sealing joint 2 is in the open state; when the blood sampling part 3 or the infusion tube is separated from the positive pressure tube sealing joint 2, the positive pressure tube sealing joint 2 is in a closed state, and the medicine or blood is prevented from flowing out. In order to realize the above function, blood sampling portion 3 with the malleation seals pipe joint 2 and can dismantle the connection, blood sampling portion 3 with when malleation seals pipe joint 2 and connects, malleation seals pipe joint 2 and is the open mode, blood sampling portion 3 with when malleation seals pipe joint 2 and separates, malleation seals pipe joint 2 and is the encapsulated situation.
The blood-taking indwelling needle is simple and quick to operate, and is suitable for patients needing blood taking and transfusion (on the premise that the patients are not subjected to any drug treatment and then are left with blood-taking samples). The blood-taking indwelling needle can realize patient protection win-win, reduces puncture times for patients, protects the patients and relieves pain; for nursing staff, the workload can be reduced, and the working efficiency can be improved.
As shown in fig. 2, the positive pressure sealing pipe joint 2 includes a first housing 201, a piston 202 and a return spring 203, wherein the piston 202 and the return spring 203 are located inside the first housing 201; one end of the return spring 203 abuts against the piston 202, and the other end abuts against the first housing 201. When blood sampling is needed, the blood sampling part 3 is connected with the positive pressure pipe sealing joint 2, the piston 202 is extruded by the blood sampling part 3, the return spring 203 is further compressed, and the positive pressure pipe sealing joint 2 is adjusted to be in an open state from a closed state; when the blood sampling part 3 is separated from the positive pressure tube sealing joint 2, the return spring 203 pushes the piston 202 to adjust the positive pressure tube sealing joint 2 from an open state to a closed state.
The piston 202 includes a plug 213 having a large diameter and a seal 212 having a small diameter, and the plug 213 and the seal 212 are coaxially disposed. The piston 202 is slidable in the axial direction of the housing. A flow hole 209 is provided in the piston 202, and the flow hole 209 extends from an end surface of the plug-shaped body 213 toward the sealing body 212 and extends radially to an outer contour of the sealing body 212 at the sealing body 212. The plug 213 is provided with a first seal ring 205 at the outer circle far away from the sealing body 212 and a second seal ring 206 at the inner hole. A third seal ring 207 is provided on the outer circumference of the seal body 212 on the side away from the plug body 213. Wherein the first sealing ring 205 of the plug-shaped body 213 is used to form a sealing connection with the inner bore of the first housing 201. The second sealing ring 206 of the plug body 213 serves to form a sealing connection with a connecting tube 204. One end of the connection tube 204 is fixed and hermetically connected to the end of the first housing 201 connected to the needle body 1, and the other end of the connection tube 204 is slidably and hermetically connected to the plug 213. Therefore, when the piston 202 slides axially along the first housing 201, the connection pipe 204 and the through hole 209 of the piston 202 can maintain a sealed connection, and blood or medical liquid is prevented from entering the cavity where the return spring 203 is located.
Be equipped with ring channel 208 and sealed hole 211 in the first casing 201, the internal diameter of ring channel 208 is greater than the internal diameter of sealed hole 211, ring channel 208 with sealed hole 211 sets up with the axle center. When the piston 202 moves to the position shown in fig. 2, the port of the flow hole 209 located at the outer circle of the sealing body 212 corresponds to the annular groove 208, the third sealing ring 207 of the sealing body 212 forms a sealing connection with the sealing inner hole 211, and the positive pressure pipe sealing joint 2 is in a closed state.
Taking the blood collection portion 3 as an example, when the piston 202 is pressed by the blood collection portion 3 and moves upward, the third seal ring 207 is deactivated when the third seal ring 207 moves to the position of the annular groove 208, and the positive pressure seal pipe joint 2 is in an open state. When the blood sampling part 3 is separated from the positive pressure tube sealing joint 2, the return spring 203 pushes the piston 202 to move downwards, and after the third sealing ring 207 is in sealing connection with the sealing inner hole 211, the liquid in the accommodating cavity 214 (refer to fig. 4) can flow to the extension tube 102 through the circulation hole 209, so that the blood of the patient is prevented from flowing into the extension tube 102 again.
After the nursing staff collects blood, the positive pressure pipe sealing joint 2 can be automatically sealed; during infusion, after the nursing staff is disinfected, the filter end of the infusion apparatus can be directly connected with the positive pressure sealing pipe joint 2, blood can return through infusion, the syringe is not required to be used for injecting physiological saline for flushing, and consumable waste is reduced. After the infusion is finished, the nursing staff can inject physiological saline into the positive pressure tube sealing joint 2, and push the liquid medicine in the extension tube 102 into the human body, so that positive pressure tube sealing is realized.
As shown in fig. 3, the blood collection part 3 includes a second housing 301, an inner protrusion 302 is disposed in the second housing 301, the second housing 301 is detachably connected to the first housing 201, and when the second housing 301 is connected to the first housing 201, a front end of the inner protrusion 302 can abut against the piston 202, and can abut against an end of the piston 202 to compress the return spring 203.
The end of the piston 202 facing the second housing 301 is provided with a conical protrusion 210 (refer to fig. 2); the end of the inner protrusion 302 is provided with a tapered recess 303 matching the tapered protrusion 210. The tapered groove 303 can automatically connect with the tapered protrusion 210 and achieve the alignment of the central axes of the two.
The blood sampling part 3 further comprises a blood sampling needle 306, the blood sampling needle 306 is arranged on the opposite side of the inner protrusion 302, a through hole 305 communicated with the blood sampling needle 306 is arranged in the inner protrusion 302, and a plurality of drainage holes 304 which are connected with the through hole 305 and penetrate through the wall of the inner protrusion 302 are further arranged on the inner protrusion 302. This structure gives the inner protrusion 302 greater strength, preventing the inner protrusion 302 from bending. The outside cover of blood taking needle 306 is equipped with protective sheath 307, protective sheath 307 with second casing 301 can be dismantled and be connected, and protective sheath 307 can play protection and isolation effect to blood taking needle 306, avoids polluting blood taking needle 306 and blood sample.
Further, the end portion of the needle body 1 connected to the positive pressure sealing tube joint 2 may be shaped to be able to fit a heparin cap, or the end portion of the positive pressure sealing tube joint 2 connected to the blood collection part 3 may be shaped to be able to fit a heparin cap. Therefore, the indwelling needle 101 or the positive pressure sealing tube connector 2 of the blood collection indwelling needle can be closed with a heparin cap. The heparin cap is matched with the blood-taking indwelling needle, and heparin sodium is injected into the heparin cap to prevent blood backflow and prevent coagulation.
Example 2
The present embodiment is further improved on the basis of embodiment 1, specifically, in the present embodiment, a liquid storage cavity 215 is further provided on the positive pressure tube sealing connector 2, the tube sealing liquid can be stored in the liquid storage cavity 215, and if necessary, the tube sealing liquid in the liquid storage cavity 215 is used for tube sealing.
Specifically, as shown in fig. 5 and fig. 6, the positive pressure pipe sealing joint 2 includes a first housing 201, a containing cavity 214 and a liquid storage cavity 215 are provided in the first housing 201, and a pipe sealing liquid valve 220 is provided on a hole communicated between the containing cavity 214 and the liquid storage cavity 215. The structure of the pipe sealing liquid valve 220 has various options as long as the orifice can be opened/closed.
A plug body 216 is arranged in the liquid storage cavity 215, the plug body 216 is connected with the liquid storage cavity 215 in a sliding and sealing mode, and a sealing ring is arranged on the outer contour of the plug body 216. The tube sealing liquid is stored in the cavity between the plug body 216 and the tube sealing liquid valve 220. The tube sealing liquid can be normal saline. Under the condition that the tube sealing liquid valve 220 is opened, when the plug body 216 moves downwards, the plug body 216 can extrude the tube sealing liquid into the accommodating cavity 214, so that the blood in the positive pressure tube sealing connector 2 and the extension tube 102 flows back, and blood coagulation is avoided.
The plug body 216 may be manually pushed or pushed in other ways to drive the movement. In this embodiment, the tube sealing liquid is preferably pushed into the accommodating cavity 214 by the elastic force of the spring. Specifically, the positive pressure pipe sealing joint 2 of the present embodiment further includes a liquid storage spring 217, and one end of the liquid storage spring 217 abuts against the plug body 216, and the other end abuts against the first housing 201. The reservoir spring 217 serves to provide an elastic force for injecting the tube sealing liquid into the accommodating chamber 214 when the tube sealing liquid valve 220 is opened.
In this embodiment, the first casing 201 is further provided with a breathing hole 231, one end of the breathing hole 231 is communicated with the cavity where the liquid storage spring 217 is located, and the other end of the breathing hole 231 extends to be communicated with the outside air. Therefore, the situation that a closed space is formed in the cavity on the side of the liquid storage spring 217 to influence the movement of the plug body 216 can be avoided.
As shown in fig. 7, the tube sealing liquid valve 220 is used to open or close the hole. The bore includes a first bore 218 and a second bore 219, the first bore 218 communicating with the reservoir 215 and the second bore 219 communicating with the receiving chamber 214. The tube sealing liquid valve 220 includes a valve body screwed to the first housing 201, and a sealing tapered portion 221 capable of blocking the hole is provided at a front end of the valve body. The sealing cone 221 is configured to form a sealing connection with the bore of the second bore 219. On the right side of the sealing cone 221, a sealing section 222, a threaded section 223 and a handle 224 are sequentially arranged on the valve body, and the sealing section 222 is matched with a fourth sealing ring 225 mounted on the first shell 201 to realize sealing. The threaded section 223 is in threaded connection with a threaded hole 226 formed in the first housing 201, the handle 224 is located outside the first housing 201, and when the handle 224 is rotated, the tube sealing liquid valve 220 can be opened/closed, the opening of the tube sealing liquid valve 220 can be adjusted, and the flow rate of the tube sealing liquid entering the accommodating cavity 214 can be adjusted.
In a further preferred embodiment, as shown in fig. 9, the inner wall of the second inner hole 219 is provided with a spiral groove 232. In practical use, the blood viscosity of some patients is high, the problem of difficulty in blood drawing exists, and after blood drawing is completed, when tube sealing is performed, the situation that tube sealing liquid is difficult to withdraw into a tube sealing joint exists, so in the scheme of the embodiment, by arranging the spiral groove 232 on the inner wall of the second inner hole 219, when the tube sealing liquid is injected, the tube sealing liquid enters the annular groove 208 and the through hole 209 in a certain rotation direction, the tube sealing liquid is favorable for pushing blood to the tube sealing and further reducing the elasticity requirement of the liquid storage spring 217 in the application, on the other hand, in the scheme of the application, steps and certain positions exist on the flow path of the annular groove 208 and the through hole 209, blood in the positions is difficult to be pushed back into the blood-drawn patient by the tube sealing liquid, and then the blood remains at the step edges and certain sharp corner positions for a long time, the blood loses activity, or even a lesion and the like causes a serious medical accident, in the scheme of the application, the tube sealing liquid enters the steps in a certain rotation direction, and is more favorable for flushing the edges and the sharp corner positions, and reducing the risk of blood remaining at the positions; when the tube sealing is carried out after the transfusion is finished, the retention time of some liquid medicines in vitro is too long, and the phenomenon of quality change also exists, so the risk of the quality change of the medicine residual in vitro can be greatly reduced after the tube sealing is carried out by adopting the scheme of the application.
In a further preferred embodiment, as shown in fig. 9, the diameter of the second inner hole 219 gradually decreases in the direction from the reservoir 215 to the flow-through hole 209. The aperture of the second inner hole 219 is gradually reduced, the flow rate of the tube sealing liquid entering the annular groove 208 and the through hole 209 can be further improved, the tube sealing liquid is further beneficial to flushing the sharp corner position of the step edge and the flow channel, and the residual risk of blood or liquid medicine outside the body is further reduced.
In addition, since the amount of blood in the positive pressure sealing tube connector 2 and the extension tube 102 is small, the volume of the liquid storage chamber 215 is also small, and the requirement of one-time operation can be satisfied. Therefore, the tube sealing liquid can be injected into the liquid storage cavity 215 when the positive pressure tube sealing joint is manufactured.
In addition, in order to enable the reuse of the positive pressure sealing pipe joint 2, a fluid replenishing hole 227 is further provided at the lower end of the first housing 201, one end of the fluid replenishing hole 227 communicates with the fluid reservoir 215, and the other end extends to the outside of the first housing 201. After the tube sealing liquid in the liquid storage cavity 215 is used up, the tube sealing liquid can be replenished into the liquid storage cavity 215 through the liquid replenishing hole 227 for the next use.
Specifically, as shown in fig. 8, a check valve is disposed on the fluid infusion hole 227 and is used for limiting one-way flow of the tube sealing fluid in the fluid infusion hole 227 from the outer port of the fluid infusion hole 227 to the fluid storage cavity 215. The one-way valve includes a sealing bead 228 and a sealing spring 229, the sealing spring 229 for providing a spring force that urges the sealing bead 228 against the port inside the weep hole 227. The outer side orifice of the fluid infusion hole 227 is provided with a sealing rubber plug 230, and a syringe can be used for injecting tube sealing fluid into the fluid infusion hole 227 through the sealing rubber plug 230.
The apparatus of the present application has been described in detail with reference to the preferred embodiments thereof, however, it should be noted that those skilled in the art can make modifications, alterations and adaptations based on the above disclosure without departing from the spirit of the present application. The present application includes the specific embodiments described above and any equivalents thereof.
Claims (8)
1. A positive pressure pipe sealing joint is characterized by comprising a first shell, wherein a containing cavity and a liquid storage cavity are arranged in the first shell, and a pipe sealing liquid valve is arranged on a pore channel communicated between the containing cavity and the liquid storage cavity; a plug body is arranged in the liquid storage cavity, the plug body is connected with the liquid storage cavity in a sliding and sealing manner, and a tube sealing liquid is stored in a cavity between the plug body and the tube sealing liquid valve; the pore includes first hole and second hole, first hole and stock solution chamber intercommunication, the second hole with hold the chamber intercommunication, be provided with spiral groove on the inner wall of second hole, by stock solution chamber to opening in the direction of hole, the aperture of second hole reduces gradually, the reduction gradually in second hole aperture, the velocity of flow that can further improvement tube sealing liquid got into annular groove and through-hole.
2. The positive pressure pipe sealing joint according to claim 1, further comprising a liquid storage spring, wherein one end of the liquid storage spring abuts against the plug body, and the other end of the liquid storage spring abuts against the first housing; when the tube sealing liquid valve is opened, the liquid storage spring is used for providing elastic force for injecting the tube sealing liquid into the accommodating cavity.
3. The positive pressure seal pipe joint according to claim 2, wherein a breathing hole is further formed in the first shell, one end of the breathing hole is communicated with the cavity where the liquid storage spring is located, and the other end of the breathing hole extends to be communicated with outside air.
4. The positive pressure pipe sealing joint according to claim 1, wherein the pipe sealing liquid valve is used for opening or closing the hole.
5. The positive pressure pipe sealing joint according to claim 4, wherein the pipe sealing liquid valve comprises a valve body in threaded connection with the first housing, and a sealing taper portion capable of blocking the hole passage is provided at a front end of the valve body.
6. The positive pressure pipe sealing joint according to claim 1, wherein the first housing further comprises a fluid infusion hole, one end of the fluid infusion hole is communicated with the fluid storage cavity, the other end of the fluid infusion hole extends to the outside of the first housing, a check valve is arranged on the fluid infusion hole, and the check valve is used for limiting one-way flow of the pipe sealing fluid in the fluid infusion hole from an outer orifice of the fluid infusion hole to the fluid storage cavity.
7. The positive pressure sealing pipe joint according to claim 6, wherein the outer orifice of the fluid infusion hole is provided with a sealing rubber plug.
8. A blood sampling indwelling needle is characterized by comprising a needle body part, a blood sampling part and the positive pressure tube sealing joint of any one of claims 1 to 7 which are connected in sequence, wherein the needle body part is used for puncturing a blood vessel of a human body, the needle body part comprises an indwelling joint and an extension tube connected with the indwelling joint, the indwelling joint is connected with the positive pressure tube sealing joint, the positive pressure tube sealing joint has a closed state and an open state, and when a medicament is injected into the human body or blood sampling is carried out, the positive pressure tube sealing joint is in the open state; when blood sampling portion or transfer line and malleation seal the union coupling separation, malleation seal the union coupling and be the encapsulated situation, avoid medicine or blood to flow out, blood sampling portion and transfer line with malleation seal the union coupling and can dismantle the connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110387777.8A CN113080957B (en) | 2021-04-09 | 2021-04-09 | Positive pressure tube sealing joint and blood sampling remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110387777.8A CN113080957B (en) | 2021-04-09 | 2021-04-09 | Positive pressure tube sealing joint and blood sampling remaining needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113080957A CN113080957A (en) | 2021-07-09 |
| CN113080957B true CN113080957B (en) | 2023-04-14 |
Family
ID=76676409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110387777.8A Active CN113080957B (en) | 2021-04-09 | 2021-04-09 | Positive pressure tube sealing joint and blood sampling remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113080957B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB839761A (en) * | 1955-08-30 | 1960-06-29 | Leonard William Levy | An improved valve for controlling the flow of fluids |
| US4181233A (en) * | 1978-11-15 | 1980-01-01 | Becton, Dickinson And Company | One-way valve stopper |
| WO2002016818A1 (en) * | 2000-08-18 | 2002-02-28 | Cryogen, Inc. | Sealing assembly |
| JP2006271655A (en) * | 2005-03-29 | 2006-10-12 | Jiro Irisawa | Vein indwelling needle with sealed transfusion circuit |
| WO2014106266A1 (en) * | 2012-12-31 | 2014-07-03 | Medtg Llc | Infusion and blood collection device and method |
| JP2014138641A (en) * | 2013-01-21 | 2014-07-31 | Fuji Systems Corp | Catheter with slit valve |
| CN204239925U (en) * | 2014-11-21 | 2015-04-01 | 珠海克林格林环保设备制造有限公司 | A kind of pipeline jointing |
| KR20150053679A (en) * | 2013-11-08 | 2015-05-18 | 히타치 어플라이언스 가부시키가이샤 | Closed compressor |
| CN208926387U (en) * | 2018-07-09 | 2019-06-04 | 四川大学华西医院 | A kind of PICC sets blood taking needle |
| CN110538359A (en) * | 2019-08-30 | 2019-12-06 | 四川大学华西医院 | Anti-thrombus venous indwelling needle and anti-thrombus method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6843775B2 (en) * | 2001-05-29 | 2005-01-18 | Smiths Medical Asd, Inc. | Blood drawing system |
| US7231936B2 (en) * | 2005-06-21 | 2007-06-19 | Kim Chang | Hot/cold water tube connection structure for plastic faucets |
| CN201182826Y (en) * | 2007-12-10 | 2009-01-21 | 张亚根 | H type safe artery and vein lien needle with non-needle connector positive-pressure enclosed valve |
| CN102068731B (en) * | 2011-01-26 | 2011-12-14 | 天津市百利康泰生物技术有限公司 | Venous retention needle suite with hirudin anticoagulation tube sealing device |
| CN104399144B (en) * | 2014-12-01 | 2017-12-22 | 河南曙光健士医疗器械集团股份有限公司 | A kind of remaining needle of band sustained release malleation |
| CA3052213A1 (en) * | 2017-03-21 | 2018-09-27 | Velano Vascular, Inc. | Devices and methods for fluid transfer through a placed peripheral intravenous catheter |
| TWM559154U (en) * | 2017-11-07 | 2018-05-01 | 宏碁股份有限公司 | Blood collection tube |
-
2021
- 2021-04-09 CN CN202110387777.8A patent/CN113080957B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB839761A (en) * | 1955-08-30 | 1960-06-29 | Leonard William Levy | An improved valve for controlling the flow of fluids |
| US4181233A (en) * | 1978-11-15 | 1980-01-01 | Becton, Dickinson And Company | One-way valve stopper |
| WO2002016818A1 (en) * | 2000-08-18 | 2002-02-28 | Cryogen, Inc. | Sealing assembly |
| JP2006271655A (en) * | 2005-03-29 | 2006-10-12 | Jiro Irisawa | Vein indwelling needle with sealed transfusion circuit |
| WO2014106266A1 (en) * | 2012-12-31 | 2014-07-03 | Medtg Llc | Infusion and blood collection device and method |
| JP2014138641A (en) * | 2013-01-21 | 2014-07-31 | Fuji Systems Corp | Catheter with slit valve |
| KR20150053679A (en) * | 2013-11-08 | 2015-05-18 | 히타치 어플라이언스 가부시키가이샤 | Closed compressor |
| CN204239925U (en) * | 2014-11-21 | 2015-04-01 | 珠海克林格林环保设备制造有限公司 | A kind of pipeline jointing |
| CN208926387U (en) * | 2018-07-09 | 2019-06-04 | 四川大学华西医院 | A kind of PICC sets blood taking needle |
| CN110538359A (en) * | 2019-08-30 | 2019-12-06 | 四川大学华西医院 | Anti-thrombus venous indwelling needle and anti-thrombus method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113080957A (en) | 2021-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102594312B1 (en) | Extension that accepts a probe or intravenous catheter | |
| EP3222310B1 (en) | Syringe for sequential expression of different liquids | |
| US5078688A (en) | Paracentesis catheter system | |
| JPH07303697A (en) | Port cannula device | |
| CN103285450A (en) | Multifunctional indwelling needle | |
| WO2004071552A2 (en) | Closed system catheterization assembly and related methods | |
| WO2015010222A1 (en) | Self-sealing anti-thrombotic venous indwelling needle and use method thereof | |
| CN216366262U (en) | Catheter system | |
| US20090221975A1 (en) | One way valve | |
| CN113080957B (en) | Positive pressure tube sealing joint and blood sampling remaining needle | |
| CA3077591C (en) | Fluid storage unit, systems, and methods for catheter priming | |
| CN214911612U (en) | Needleless airtight connecting piece | |
| CN113080956B (en) | Blood sampling indwelling needle | |
| US20030093058A1 (en) | Cannula assembly | |
| CN215608332U (en) | Prefillable venous indwelling needle | |
| KR200320341Y1 (en) | IV catheter for flowing backward prevention of blood | |
| CN219398502U (en) | Remaining needle for preventing blood from flowing reversely | |
| CN216148739U (en) | Blood return prevention venous transfusion device | |
| CN212308576U (en) | Self-sealing type venous indwelling needle | |
| CN219332777U (en) | Precise filtering transfusion device with soft needle | |
| CN220275605U (en) | Blood sampling indwelling needle | |
| CN216148741U (en) | Blood return prevention venous transfusion needle | |
| CN109010991B (en) | Infusion apparatus, sampling method and flushing pipe method | |
| CN215134637U (en) | Novel needle-free infusion joint not easy to store bacteria | |
| CN215461403U (en) | Disposable venous indwelling needle positive pressure three-way connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |