CN111569189A - Indwelling needle assembly with blood coagulation and anticoagulation functions switched and processing and manufacturing method - Google Patents
Indwelling needle assembly with blood coagulation and anticoagulation functions switched and processing and manufacturing method Download PDFInfo
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- CN111569189A CN111569189A CN202010435289.5A CN202010435289A CN111569189A CN 111569189 A CN111569189 A CN 111569189A CN 202010435289 A CN202010435289 A CN 202010435289A CN 111569189 A CN111569189 A CN 111569189A
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- needle assembly
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M2039/0205—Access sites for injecting media
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/24—Check- or non-return valves
- A61M2039/2473—Valve comprising a non-deformable, movable element, e.g. ball-valve, valve with movable stopper or reciprocating element
- A61M2039/248—Ball-valve
Abstract
The invention relates to the technical field of manufacturing of blood coagulation reserved needles, in particular to a blood coagulation and anticoagulation function switching indwelling needle assembly and a processing and manufacturing method thereof. The nurse personnel can effectively realize the fast packaging after the transfusion by operating the packaging assembly arranged in the reserved needle, and can realize the sealing of the whole passage by controlling, adjusting and converting the screwing-in of the on-off part; the whole extension hose can be controlled to form a sealing state, the condition of blood return of a patient is prevented, anticoagulation is effectively realized, and the function is reliable.
Description
Technical Field
The invention relates to the technical field of manufacturing of blood coagulation reserved needles, in particular to a blood coagulation and anticoagulation function switching reserved needle assembly and a processing and manufacturing method thereof.
Background
The traditional venous trocar is also called venous indwelling needle, which is composed of a stainless steel core, a soft outer sleeve and a plastic needle seat. The outer sleeve and the needle core are inserted into the blood vessel during puncture, and after the sleeve is fed into blood, the needle core is drawn out, and only the soft outer sleeve is left in the blood vessel for transfusion.
The use of the indwelling needle can not only reduce the pain and the fear of the needle caused by repeated venipuncture of the infant patient, but also reduce the anxiety of parents; the medicine is convenient for clinical administration for critically ill patients who need frequent transfusion in the near term, and the medicine for emergency treatment for critical patients; meanwhile, the workload of nurses can be reduced, and the pain of patients can be reduced, so that the venous indwelling needle is widely applied in clinic.
As the sleeve of the vein indwelling needle needs to be left in the vein of the human body for a long time, the tube needs to be sealed in order to prevent the blockage of the tube cavity caused by the backflow and coagulation of blood after the completion of each transfusion. At present, a common syringe is generally used for injecting tube sealing liquid into the cavity of the indwelling needle tube for tube sealing. Generally, a slow injection positive pressure tube sealing method is adopted, namely, the needle head is withdrawn while being slowly pushed, so that the needle tip part is ensured to maintain positive pressure, and blood is prevented from flowing back to the blood vessel needle to cause blood coagulation and tube blockage.
However, in the method for sealing the tube by using the common syringe, if the tube is not completely sealed, the blood can flow back to the front end of the sleeve tube due to incomplete sealing, so that the blood coagulation is blocked but not discovered, and the blood clots coagulated during secondary transfusion are flushed into the veins of the human body by liquid, so that thrombus is generated, and therefore, the structure of the existing indwelling needle has defects in the function safety of blood coagulation and anticoagulation.
Disclosure of Invention
The technical scheme adopted by the invention for solving one of the technical problems is as follows: the utility model provides a blood coagulation and keep somewhere needle subassembly that anticoagulation function switches, includes syringe needle subassembly and encapsulation subassembly, the syringe needle subassembly with through extension hose intercommunication between the encapsulation subassembly, the encapsulation subassembly includes a positive connector part that can realize blood coagulation and anticoagulation function switch, positive connector part can control extension hose and outside intercommunication and seal one side intercommunication of positive connector part has one side joint member, side joint member is used for realizing outside flowing back.
Preferably, the encapsulation subassembly includes a malleation main joint pipe, the setting of lining up from top to bottom of malleation main joint pipe set up the internal thread in the malleation main joint pipe hypomere inside wall the internal thread section thread seal of malleation main joint pipe has closed a pair joint pipe soon, be provided with the external screw thread that closes soon with the internal thread seal on the middle section outside wall of vice joint pipe, the upper segment of vice joint pipe is opened and is set up, the lower extreme shutoff and with extension hose intercommunication sets up the intracavity of vice joint pipe is provided with a conversion stop piece, vice joint pipe with malleation main joint pipe is used for realizing the shutoff and the switch-on of conversion stop piece and the change of direction through relative displacement.
Preferably, the conversion pass-stop member comprises two conical pipes which are arranged at intervals and oppositely, two sections of the conical pipes are arranged in an open manner, two small-diameter ports are arranged oppositely and coaxially, the two conical pipes are respectively and fixedly connected with the auxiliary joint pipe, a rubber valve ball is arranged in the inner cavity of the middle part of the auxiliary joint pipe between the two conical pipes, the centers of the upper end and the lower end of the rubber valve ball are respectively provided with a threaded blind hole and an installation auxiliary square hole, a rigid top column which is coaxially arranged with the threaded blind hole is tightly screwed in the threaded blind hole at the upper end, the upper end of the rigid top column is integrally connected with a rigid semicircular ring, two ends of the rigid semicircular ring are respectively and fixedly connected to the side wall of the inner cavity of the positive pressure main joint pipe, the diameter of the rubber valve ball is larger than the inner end caliber of the conical pipe, and the outer diameter of the rigid support pillar is smaller than the inner end caliber of the conical pipe.
Preferably, the two conical pipes and the auxiliary joint pipe are integrally formed, blank pieces of the auxiliary joint pipe and the two conical pipes are blank pipe fittings with two conical ends, and conical pipe sections at two ends of the blank pipe fittings are turned inwards to form the two conical pipes.
Preferably, the side joint part comprises a joint side branch pipe communicated with a middle inner cavity between the two conical pipes of the auxiliary joint pipe, a one-side outlet check valve is screwed at the outer end of the joint side branch pipe, and a pressurizing and non-communicating rotary plug is screwed in a valve pipe inner thread cavity at the outer end of the side outlet check valve.
Preferably, the outer wall of the upper section of the positive pressure main joint pipe and the outer wall of the lower section of the auxiliary joint pipe are fixedly connected with a locking lug respectively, and the two locking lugs are connected through a locking piece.
Preferably, the needle assembly comprises a transparent tee joint, an isolating plug is installed in a cavity sealing plug at the rear end of a main pipe of the transparent tee joint, a branch pipe of the transparent tee joint is communicated with the extension hose, a needle is connected to the front section of the main pipe of the transparent tee joint, an outer sleeve is sleeved on the outer side of the needle, the needle and the outer sleeve are used for extending into a blood vessel of a human body during injection, and a needle holding handle is sequentially connected to the transparent tee joint.
A processing and manufacturing method of an indwelling needle assembly with blood coagulation and anticoagulation functions switching comprises the following steps:
s1: processing and manufacturing to form each spare part;
s2: all parts are sterilized;
s3: assembling the parts according to an assembling method to form an assembly product;
s4: secondary sterilization and disinfection of the product;
s5: and (6) packaging and bagging.
The processing and manufacturing method in S1 includes the processing and manufacturing method of the sub-joint pipe and the conversion pass-stop member thereon, and specifically includes the following steps:
a1, preparing two identical semi-cylindrical annular blank pipe fittings for standby;
a2, placing the processed rubber valve ball in the middle cavity of one semi-cylindrical ring-shaped blank pipe fitting, and then symmetrically combining and hot-melting the two semi-cylindrical ring-shaped blank pipe fittings to form a cylindrical blank forming pipe;
a3, pressing and heating the two ends of the blank forming tube to realize the inward turning after the conical tubes at the two ends of the blank forming tube are softened and are shaped to form the conical tube by a conical pressure head with matched size on a processing machine tool;
a4, turning external threads on the outer side wall of the auxiliary joint pipe;
a5, mounting a positive pressure main joint pipe to ensure that a rigid support pillar inside the positive pressure main joint pipe is fixedly connected with a threaded blind hole of the rubber ball valve;
the method comprises the following specific steps: one end extends to the inner cavity of the blank forming pipe through the ejector rod to jack the rubber ball valve to realize positioning, the other end is inserted into an installation auxiliary square hole of the rubber ball valve through the clamping rod, primary positioning is formed at the moment, then the positive pressure main joint pipe is screwed on the outer side wall of the auxiliary joint pipe, meanwhile, the inner end of the rigid ejection column is screwed into the rubber ball valve to form and fix, and proper medical-grade glue is required to be smeared at the inner end of the rigid ejection column before screwing.
The invention has the beneficial effects that: the nurse personnel can effectively realize the fast packaging after the transfusion by operating the packaging assembly arranged in the reserved needle, and can realize the sealing of the whole passage by controlling, adjusting and converting the screwing-in of the on-off part; in getting into the extension hose through injecting into anti-freezing medicines such as quantitative anti-freezing heparin, pass through the end piece through upper and lower rotary joint conversion and make the port of the conical tube that its upper and lower position goes out realize sealed shutoff with the rubber valve ball that corresponds position department to realize controlling the one-way circulation of extension hose, can control whole extension hose and form encapsulated situation, prevent the condition of patient's blood return, effectual realization anti-freezing, the function is reliable.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or components are generally identified by like reference numerals. In the drawings, elements or components are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of a package assembly of the present invention.
Fig. 3 is a schematic structural view of the switching pass-stop member of the present invention.
Fig. 4 is a schematic structural view of the sub coupling pipe of the present invention.
FIG. 5 is a schematic view of the construction of a hot-melt cylindrical blank-forming tube of the present invention.
Fig. 6 is a schematic structural diagram of a semi-cylindrical ring-shaped blank pipe fitting of the present invention.
In the figure, 1, a needle assembly; 2. A package assembly; 3. extending the hose; 4. Switching the pass-stop member; 40. a lock; 41. a positive pressure main joint pipe; 42. an auxiliary joint pipe; 43. a rigid top pillar; 44. a rigid semi-circular ring; 45. a conical tube; 46. a connecting pipe; 47. a rubber valve ball; 48. mounting holes; 49. locking lugs; 5. A side joint member; 51. a joint side branch pipe; 52. a one-way valve; 53. pressurizing to stop the rotation plug; 6. welding section seams; 7. and (5) installing an auxiliary square hole.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1-6, an indwelling needle assembly for switching blood coagulation and anticoagulation functions comprises a needle assembly 1 and a packaging assembly 2, wherein the needle assembly 1 is communicated with the packaging assembly 2 through an extension hose 3, the upper end of the extension hose 3 is connected with a connecting pipe 46 at the lower end of the packaging assembly 2, the packaging assembly 2 comprises a positive connector component capable of switching blood coagulation and anticoagulation functions, the positive connector component can control the extension hose 3 to be communicated and sealed with the outside, one side of the positive connector component is communicated with a side connector component 5, and the side connector component 5 is used for discharging liquid to the outside.
The nurse personnel can effectively realize the fast packaging after the transfusion by operating the packaging component 2 arranged in the reserved needle, and can realize the sealing of the whole passage by controlling and adjusting the screwing of the switching on-off component 4; the anti-freezing medicine such as anti-freezing heparin is injected into the extension hose 3 by proper amount to fill the extension hose until the blood of the blood vessel of the patient contacts to form a plug, the upper liquid medicine is filled into the middle cavity of the auxiliary joint pipe 42 and forms a plug through the upper conical pipe 45 and the rubber valve ball 47, and at the moment, the side joint part 5 forms a plug through the pressurizing and stopping rotating plug 53; the port of the conical pipe which is led out from the upper position and the lower position of the conical pipe is sealed and blocked by the upper and lower screwing conversion pass-stop piece 4 and the rubber valve ball 47 at the corresponding position, so that the one-way circulation of the extension hose 3 is controlled, the whole extension hose 3 can be controlled to form a sealing state, the condition of blood return of a patient is prevented, anticoagulation is effectively realized, and the function is reliable.
When transfusion is needed again, firstly the sealing screw cap at the port at the end part of the positive pressure main joint pipe 41 is taken down, then the injector is connected, the pressurizing and non-communicating rotary plug 53 of the side joint part 5 is pulled out, and at the moment, the passage connected with the blood vessel of the human body through the extension hose 3 is in a closed state, so blood return is not worried about; the residual anticoagulation liquid medicine in the upper end of the packaging component 2 is discharged through the side joint part 5 by pushing the syringe, and after the anticoagulation liquid medicine on the upper part of the extension hose 3 is basically discharged, the rotary plug 53 is blocked, pressurized and stopped to be opened; the switching on/off member 4 is turned on to start infusion.
Preferably, encapsulation subassembly 2 includes a malleation main joint pipe 41, the setting of lining up from top to bottom of malleation main joint pipe 41 set up the internal thread in the malleation main joint pipe 41 hypomere inside wall the internal thread section thread seal of malleation main joint pipe 41 closes a pair joint pipe 42 soon, be provided with the external screw thread that closes soon with the internal thread seal on the middle section outside wall of vice joint pipe 42, the upper segment of vice joint pipe 42 is opened and is set up, the lower extreme shutoff and with extension hose 3 intercommunication sets up the intracavity of vice joint pipe 42 is provided with a conversion and leads to and ends piece 4, vice joint pipe 42 with malleation main joint pipe 41 is used for realizing the shutoff of conversion and the change of switch-over and lead to and end the direction through relative displacement.
The rubber valve ball 47 and the conical pipe 45 at the corresponding position can be blocked by switching the position of the through-stop piece 4 in a screwing mode, so that different conducting passages are formed.
Preferably, the conversion pass-stop member 4 includes two conical pipes 45 which are spaced and oppositely disposed, two sections of the conical pipes 45 are open and two small-diameter ports are relatively coaxially disposed, the two conical pipes 45 are respectively and fixedly connected with the secondary joint pipe 42, a rubber valve ball 47 is arranged in the middle inner cavity of the auxiliary joint pipe 42 between the two conical pipes 45, the centers of the upper and lower ends of the rubber valve ball 47 are respectively provided with a threaded blind hole and an installation auxiliary square hole 7, a rigid top column 43 which is coaxially arranged with the threaded blind hole is tightly screwed in the threaded blind hole at the upper end, the upper end of the rigid top column 43 is integrally connected with a rigid semicircular ring 44, two ends of the rigid semicircular ring 44 are respectively and fixedly connected to the inner cavity side wall of the positive pressure main joint pipe 41, the diameter of the rubber valve ball 47 is larger than the inner end caliber of the conical pipe 45, and the outer diameter of the rigid support pillar 43 is smaller than the inner end caliber of the conical pipe 45.
When the rubber valve ball 47 abuts against the inner port of the conical pipe 45 at the corresponding position, the rubber valve ball 47 has certain flexibility, so that the good plugging performance can be ensured.
Preferably, the two conical pipes 45 and the auxiliary joint pipe 42 are integrally formed, blank pieces of the auxiliary joint pipe 42 and the two conical pipes 45 are blank pipe fittings with two conical ends, and conical pipe sections at two ends of the blank pipe fittings are turned inwards to form the two conical pipes 45.
Preferably, the side joint member 5 includes a joint side branch pipe 51 communicated with the mounting hole 48 at the middle inner cavity between the two conical pipes 45 of the auxiliary joint pipe 42, a side outlet check valve 52 is screwed and mounted at the outer end of the joint side branch pipe 51, and a pressure stop rotary plug 53 is screwed and mounted in the valve pipe inner threaded cavity at the outer end of the side outlet check valve 52.
The function of the pressurized stop-rotation plug 53 is to form a plug to prevent the internal liquid from flowing out.
Preferably, the outer wall of the upper section of the positive pressure main joint pipe 41 and the outer wall of the lower section of the auxiliary joint pipe 42 are respectively fixedly connected with a locking lug 49, and the two locking lugs 49 are connected through a locking piece 40.
The primary purpose of lock 40, locking ears 49 is to prevent the patient from adjusting the current components on the indwelling needle at will; it is needless to say that the probability of occurrence of the above-described situation may be reduced by a nurse covering the entire indwelling needle used by the patient after the sealing.
Preferably, the needle assembly 1 comprises a transparent tee joint, an isolating plug is installed in a cavity sealing plug at the rear end of a main pipe of the transparent tee joint, a branch pipe of the transparent tee joint is communicated with the extension hose 3, a needle is connected to the front section of the main pipe of the transparent tee joint, an outer sleeve is sleeved on the outer side of the needle, the needle and the outer sleeve are used for extending into a blood vessel of a human body during injection, and a needle holding handle is sequentially connected to the transparent tee joint.
A processing and manufacturing method of an indwelling needle assembly with blood coagulation and anticoagulation functions switching comprises the following steps:
s1: processing and manufacturing to form each spare part;
s2: all parts are sterilized;
s3: assembling the parts according to an assembling method to form an assembly product;
s4: secondary sterilization and disinfection of the product;
s5: and (6) packaging and bagging.
The processing and manufacturing method in S1 includes the processing and manufacturing method of the sub joint pipe 42 and the conversion pass-stop piece 4 thereon, and specifically includes the following steps:
a1, preparing two identical semi-cylindrical annular blank pipe fittings for standby;
a2, placing the processed rubber valve ball 47 in the middle cavity of one semi-cylindrical ring-shaped blank pipe fitting, and then symmetrically combining and hot-melting the two semi-cylindrical ring-shaped blank pipe fittings to form a cylindrical blank forming pipe;
a3, pressing and heating the two ends of the blank forming tube to realize the inward turning and shaping of the softened tapered tubes at the two ends of the blank forming tube to form the tapered tube 45 by a tapered pressure head with matched size on a processing machine tool;
a4, turning external threads on the outer side wall of the auxiliary joint pipe 42;
a5, installing the positive pressure main joint pipe 41 to ensure that the rigid support column 43 inside the positive pressure main joint pipe is fixedly connected with the threaded blind hole of the rubber ball valve;
the method comprises the following specific steps: one end extends to the inner cavity of the blank forming pipe through the ejector rod to jack the rubber ball valve to realize positioning, the other end is inserted into an installation auxiliary square hole 7 of the rubber ball valve 47 through the clamping rod, primary positioning is formed at the moment, then the positive pressure main joint pipe 41 is screwed on the outer side wall of the auxiliary joint pipe 42, meanwhile, the inner end of the rigid ejection column 43 is screwed into the rubber ball valve 47 to form and fix, and proper medical-grade glue is required to be smeared at the inner end of the rigid ejection column 43 before screwing.
The auxiliary joint pipe 42 and the tapered pipes at the two ends of the auxiliary joint pipe are manufactured in a fusion and opposite-turning forming mode during processing in the whole processing process of the conversion through-stop piece 4, and the strength of the whole structure can be effectively guaranteed.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or the substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention, and the technical solutions are all covered in the scope of the claims and the specification of the present invention; it will be apparent to those skilled in the art that any alternative modifications or variations to the embodiments of the present invention may be made within the scope of the present invention.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (9)
1. An indwelling needle assembly for switching between blood coagulation and anticoagulation functions is characterized in that: including syringe needle subassembly and encapsulation subassembly, the syringe needle subassembly with communicate through the extension hose between the encapsulation subassembly, the encapsulation subassembly includes that one can realize just the head piece that blood coagulation and anticoagulation function switch, just the head piece can control extension hose and outside intercommunication and sealed just one side intercommunication of head piece has one side joint member, side joint member is used for realizing outside flowing back.
2. The indwelling needle assembly for switching between clotting and anticoagulant functions of claim 1, wherein: the encapsulation subassembly includes a malleation owner joint pipe, the setting of having a perfect understanding from top to bottom of malleation owner joint pipe set up the internal thread in the malleation owner joint pipe hypomere inside wall the internal thread section thread seal of malleation owner joint pipe has closed a pair joint pipe soon, be provided with the external screw thread that closes soon with the internal thread seal on the middle section outside wall of vice joint pipe, the upper segment of vice joint pipe is opened and is set up, the lower extreme shutoff and with extension hose intercommunication sets up the intracavity of vice joint pipe is provided with a conversion and leads to the piece, vice joint pipe with malleation owner joint pipe is used for realizing the shutoff of conversion through the piece and switches on and lead to the change of ending the direction through relative displacement.
3. An indwelling needle assembly for switching between clotting and anticoagulant functions, according to claim 2, in which: the conversion pass-stop piece comprises two conical pipes which are arranged at intervals and oppositely, two sections of the conical pipes are arranged in an open mode, two small-diameter ports are arranged coaxially and oppositely, the two conical pipes are fixedly connected with the auxiliary joint pipe respectively, a rubber valve ball is arranged in an inner cavity in the middle of the auxiliary joint pipe between the two conical pipes, threaded blind holes and installation auxiliary square holes are formed in the centers of the upper end and the lower end of the rubber valve ball respectively, a rigid support pillar which is coaxially arranged with the threaded blind holes is fastened and screwed in the threaded blind holes in the upper end of the rubber valve ball, a rigid semicircular ring is integrally connected to the upper end of the rigid support pillar, two ends of the rigid semicircular ring are fixedly connected to the side wall of the inner cavity of the positive pressure main joint pipe respectively, the diameter of the rubber valve ball is larger than the inner end of the conical pipes, and the outer diameter of the rigid support pillar is smaller than.
4. An indwelling needle assembly for switching between clotting and anticoagulant functions, according to claim 3, in which: the two conical pipes and the auxiliary joint pipe are integrally formed, blank pieces of the auxiliary joint pipe and the two conical pipes are blank pipe fittings with two conical ends, and conical pipe sections at two ends of each blank pipe fitting are turned inwards to form the two conical pipes.
5. The indwelling needle assembly for switching between clotting and anticoagulant functions of claim 4, wherein: the side joint part comprises a joint side branch pipe communicated with the middle inner cavity between the two conical pipes of the auxiliary joint pipe, the outer end of the joint side branch pipe is screwed with a one-side outlet check valve, and a pressurizing and non-communicating rotary plug is screwed in the valve pipe inner thread cavity at the outer end of the side outlet check valve.
6. The indwelling needle assembly for switching between clotting and anticoagulant functions of claim 5, wherein: the outer wall of the upper section of the positive pressure main joint pipe and the outer side wall of the lower section of the auxiliary joint pipe are fixedly connected with a locking lug respectively, and the two locking lugs are connected through a locking piece.
7. The indwelling needle assembly for switching between clotting and anticoagulant functions of claim 6, wherein: the syringe needle subassembly includes a transparent tee bend, the rear end intracavity sealing plug of the person in charge of transparent tee bend is equipped with an isolation stopper, transparent tee bend's branch pipe with the extension hose is linked together transparent tee bend's the anterior segment of being responsible for is connected with the syringe needle the outer tube has been cup jointed in the outside of syringe needle, the syringe needle with the outer tube is used for extending in human blood vessel when the injection transparent tee bend connect gradually hold the needle handle.
8. A processing and manufacturing method of an indwelling needle assembly with blood coagulation and anticoagulation functions, which is characterized in that: the method comprises the following steps:
s1: processing and manufacturing to form each spare part;
s2: all parts are sterilized;
s3: assembling the parts according to an assembling method to form an assembly product;
s4: secondary sterilization and disinfection of the product;
s5: and (6) packaging and bagging.
9. A processing and manufacturing method of an indwelling needle assembly with blood coagulation and anticoagulation functions, which is characterized in that: the processing and manufacturing method in S1 includes the processing and manufacturing method of the sub-joint pipe and the conversion pass-stop member thereon, and specifically includes the following steps:
a1, preparing two identical semi-cylindrical annular blank pipe fittings for standby;
a2, placing the processed rubber valve ball in the middle cavity of one semi-cylindrical ring-shaped blank pipe fitting, and then symmetrically combining and hot-melting the two semi-cylindrical ring-shaped blank pipe fittings to form a cylindrical blank forming pipe;
a3, pressing and heating the two ends of the blank forming tube to realize the inward turning after the conical tubes at the two ends of the blank forming tube are softened and are shaped to form the conical tube by a conical pressure head with matched size on a processing machine tool;
a4, turning external threads on the outer side wall of the auxiliary joint pipe;
a5, installing a positive pressure main joint pipe to ensure that a rigid top column inside the positive pressure main joint pipe is fixedly connected with a threaded blind hole of the rubber ball valve.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010435289.5A CN111569189A (en) | 2020-05-21 | 2020-05-21 | Indwelling needle assembly with blood coagulation and anticoagulation functions switched and processing and manufacturing method |
| CN202011434270.5A CN112274728B (en) | 2020-05-21 | 2020-12-10 | Indwelling needle assembly with blood coagulation and anticoagulation functions switched and processing and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010435289.5A CN111569189A (en) | 2020-05-21 | 2020-05-21 | Indwelling needle assembly with blood coagulation and anticoagulation functions switched and processing and manufacturing method |
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| Publication Number | Publication Date |
|---|---|
| CN111569189A true CN111569189A (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010435289.5A Pending CN111569189A (en) | 2020-05-21 | 2020-05-21 | Indwelling needle assembly with blood coagulation and anticoagulation functions switched and processing and manufacturing method |
| CN202011434270.5A Active CN112274728B (en) | 2020-05-21 | 2020-12-10 | Indwelling needle assembly with blood coagulation and anticoagulation functions switched and processing and manufacturing method |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011434270.5A Active CN112274728B (en) | 2020-05-21 | 2020-12-10 | Indwelling needle assembly with blood coagulation and anticoagulation functions switched and processing and manufacturing method |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6994315B2 (en) * | 2004-01-13 | 2006-02-07 | Rymed Technologies, Inc. | Swabbable needle-free injection port valve system with neutral fluid displacement |
| CN201356857Y (en) * | 2009-01-21 | 2009-12-09 | 威海洁瑞医用制品有限公司 | Connector pipe type positive pressure vein remaining needle |
| CN202185013U (en) * | 2011-08-05 | 2012-04-11 | 天津市百利康泰生物技术有限公司 | Anti-coagulation sealing tube suite |
| CN203915620U (en) * | 2014-04-11 | 2014-11-05 | 福建省百仕韦医用高分子股份有限公司 | Medical rotary switch joint |
| 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 |
| DE102016003189B3 (en) * | 2016-03-15 | 2017-04-27 | Kai Stefan Kisielinski | Venous catheter for puncturing peripheral veins with integrated micromechanical and antimicrobial protection function in the injection device for rapid deployment in ambulance and emergency medicine |
| CN106421960A (en) * | 2016-07-11 | 2017-02-22 | 欧阳小青 | Medical anti-thrombosis infusion connector |
| CN207286405U (en) * | 2017-03-06 | 2018-05-01 | 曾维富 | A kind of venous detaining needle for showing blood back and preventing thrombosis |
| CN107096112A (en) * | 2017-06-17 | 2017-08-29 | 张伟萍 | A kind of indwelling emergency treatment conduit thrombosis prevention device |
| CN107661553A (en) * | 2017-09-01 | 2018-02-06 | 李卫林 | A kind of revolving preventing thrombosis remaining needle |
| CN107569738A (en) * | 2017-09-26 | 2018-01-12 | 湖北楚天药业有限责任公司 | A kind of positive pressure vein remaining needle |
-
2020
- 2020-05-21 CN CN202010435289.5A patent/CN111569189A/en active Pending
- 2020-12-10 CN CN202011434270.5A patent/CN112274728B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112274728B (en) | 2022-07-19 |
| CN112274728A (en) | 2021-01-29 |
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Application publication date: 20200825 |