CN204637175U - A kind of venous detaining needle anticoagulant pre-encapsulated injector - Google Patents
A kind of venous detaining needle anticoagulant pre-encapsulated injector Download PDFInfo
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- CN204637175U CN204637175U CN201520106013.7U CN201520106013U CN204637175U CN 204637175 U CN204637175 U CN 204637175U CN 201520106013 U CN201520106013 U CN 201520106013U CN 204637175 U CN204637175 U CN 204637175U
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- China
- Prior art keywords
- anticoagulant
- sheath
- fastening base
- venous detaining
- needle
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Abstract
The utility model discloses a kind of venous detaining needle anticoagulant pre-encapsulated injector, comprise injection tube and sealing cap, described injection tube comprises cylindrical shell, piston, push rod, for being loaded with the medicinal liquid cavity of anticoagulant between the outlet of described cylindrical shell and piston; The exit of cylindrical shell is fixedly connected with joint for fittings with internal threads; Described sealing cap comprises the fastening base and sheath that are fixedly linked, arranges the plug being used for shutoff cartridge outlet in the gap of fastening base and sheath; Described fastening base bottom is provided with the external screw thread matched with joint female thread, is also provided with the bellmouth for the outlet of sealing injection cylinder in fastening base; Described sheath top is provided with the female thread matched with the external screw thread of remaining needle anticoagulant entrance; Described sealing cap is also provided with the projection for shutoff remaining needle anticoagulant entrance.This utility model structure is reasonable, good sealing effect, medication accurate measurement, can directly use the sealing cap of anticoagulant syringe to carry out shutoff to remaining needle after injection anticoagulant, easy to use.
Description
Technical field
This utility model relates to a kind of venous detaining needle anticoagulant pre-encapsulated injector, belongs to technical field of medical instruments.
Background technology
At present, at medical field, venous detaining needle has been widely used in clinical, the catheter retaining of remaining needle, in the vein of patient, forms a closed infusion channel, indwelling many days after having one-time puncture, the advantage that can repeatedly infuse, simplify transfusion operation step, decrease the misery of patient; Be particularly suitable for gerontal patient, children's, need multiple injection to treat but the patient of acupuncture treatment difficulty without sense of independence patient etc., especially critical patient, can open blood vessel access medication at any time, improves salvage success rate.Venous detaining needle not only may be used for conventional venous transfusion, and may be used for repeatedly taking a blood sample discontinuously, has both avoided the misery that repeated localised puncture causes to patient, has protected again the vein of patient, can also improve the work efficiency of medical personnel simultaneously.
Venous detaining needle comprises puncture needle and sleeve pipe.After puncture needle penetrates patient's vein with sleeve pipe, extract puncture needle, sleeve pipe stays in the body, and outer end connects infusion set or blood-taking device again.Sleeve pipe due to venous detaining needle needs the long period to stay in human vein, after each transfusion completes, blood is easily back in the venous indwelling needle cannula do not pulled out, because sleeve pipe inner blood is stagnated relatively, easily solidify generation clot, in venous detaining needle infusion process thereafter, clot may enter blood circulation and causes thrombosis and bring potential safety hazard to patient, and anticoagulant therefore must be used to carry out tube sealing to remaining needle.
Along with the development of pre-encapsulated injector, in recent years anticoagulant is potted in advance this way in syringe and is widely used.Direct for the liquid anticoagulant of fixed amount inoculated is enclosed in syringe and preserves, be equivalent to typical medicine packing container when storage of pharmaceutical, and be equivalent to common syringe in use, during use, carry out drug solution preparing operation again without the need to medical personnel, simple and convenient.During use, the anticoagulant in pre-encapsulated injector is pushed venous detaining needle, completes tube sealing, and then use end cap to resist solidifying agent entrance to carry out shutoff, but due to the end cap volume that remaining needle carries very little, be therefore very easy to drop, very inconvenient use.
Utility model content
This utility model technical issues that need to address are to provide a kind of venous detaining needle anticoagulant pre-encapsulated injector, and this syringe construction is reasonable, easy to use, anticoagulant adds dosage accurately, and can carry out shutoff to the anticoagulant entrance of venous detaining needle.
For solving the problems of the technologies described above, the technical scheme that this utility model adopts is:
A kind of venous detaining needle anticoagulant pre-encapsulated injector, comprise injection tube and sealing cap, described injection tube comprises cylindrical shell, piston, push rod, for being loaded with the medicinal liquid cavity of anticoagulant between the outlet of described cylindrical shell and piston; The exit of cylindrical shell is fixedly connected with joint for fittings with internal threads;
Described sealing cap comprises the fastening base and sheath that are fixedly linked, arranges the plug being used for shutoff cartridge outlet in the gap of fastening base and sheath; Described fastening base bottom is provided with the external screw thread matched with joint female thread, is also provided with the bellmouth for the outlet of sealing injection cylinder in fastening base; Described sheath top is provided with the female thread matched with the external screw thread of remaining needle anticoagulant entrance; Described sealing cap is also provided with the projection for shutoff remaining needle anticoagulant entrance.
Further improvement of the utility model is: pass through welding, bonding, clamping between described fastening base and sheath or be threaded to be fixedly linked.
Further improvement of the utility model is: described fastening base is arranged circumferentially the draw-in groove matched with the boss of sheath bottom.
Further improvement of the utility model is: described fastening base is provided with the female thread matched with the external screw thread of sheath.
Further improvement of the utility model is: be also provided with the sealing projection matched with the inwall of injection tube bell bottom described plug.
Further improvement of the utility model is: the top of described plug arranges protruding closure part, and closure part is through the centre bore of sheath; The outer wall of closure part matches with the inwall of remaining needle anticoagulant entrance.
Further improvement of the utility model is: the upper surface of described closure part offers pit.
Further improvement of the utility model is: the center of described sheath arranges protruding block head, and the outer wall of block head matches with the inwall of remaining needle anticoagulant entrance.
Further improvement of the utility model is: the end of described cylindrical shell or middle part be also provided with annular support portion.
Further improvement of the utility model is: the outer wall of described cylindrical shell is provided with graduated scale.
Owing to have employed technique scheme, the technological progress that this utility model obtains is:
This utility model provides a kind of venous detaining needle anticoagulant pre-encapsulated injector, this syringe construction is reasonable, good sealing effect, easy to operate convenient, medication accurate measurement, the sealing cap of anticoagulant syringe directly can be used to carry out shutoff to remaining needle after injection anticoagulant, greatly facilitate the use of medical personnel.
Sealing cap of the present utility model comprises the fastening base, plug and the sheath that are connected as a single entity.Fastening base is fixedly connected with sheath, and plug is arranged in the gap between fastening base and sheath, and whole sealing cap connects and closely, not easily disperses.Bellmouth below fastening base matches with the outer wall of injection tube conical outlet, and sealing is good; The bottom of rubber cap is provided with circular sealing projection, and sealing projection is stuck in the top of fastening base bellmouth and matches with the inwall of injection tube conical outlet.The outer wall of bellmouth and sealing projection, can form with injection tube conical outlet the effect that inside and outside dual seals, effectively can keep aseptic condition when ensureing that pre-fill anticoagulant syringe does not use.
This utility model sealing cap is provided with the projection for shutoff venous detaining needle anticoagulant entrance.Projection can be the closure part be located on plug, also can be the block head be arranged on sheath.The good deformability in closure part effectively can carry out shutoff to anticoagulant entrance; The pit that the top of closure part is arranged can make plug easily insert in anticoagulant entrance.The length of block head is longer, can insert the anticoagulant entrance depths of remaining needle.External screw thread threaded engagement that is protruding and sealing cap uses, and effectively avoids sealing cap to come off in the situation of rocking.
Syringe barrel of the present utility model is provided with graduated scale, both pharmaceutical factory had been facilitated to carry out fill to it, also make medical personnel observe more intuitively in the process of injecting simultaneously, measure medicinal liquid bolus amount, be convenient to control dose, accurate and effective injection for curing is carried out to patient.
The portion of supporting of this utility model injection tube is positioned at end or the middle part of syringe barrel, and can effectively avoid medical personnel to hold in the process pushing anticoagulant unstable, convenient operation, ensures anticoagulant all to push in remaining needle.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment 1;
Fig. 2 is the sealing cap structural representation of embodiment 1, embodiment 2;
Fig. 3 is the sealing cap structural representation of embodiment 3, embodiment 4;
In figure, 1, injection tube, 11, cylindrical shell, 12, piston, 13, push rod, 14, medicinal liquid cavity, 15, support portion, 2, fastening base, 3, plug, 4, sheath, 5, joint.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, this utility model is described in further details:
Embodiment 1
A kind of venous detaining needle anticoagulant pre-encapsulated injector, as shown in Figure 1 and Figure 2, comprises injection tube 1 and sealing cap.
Described injection tube 1 comprises cylindrical shell 11, piston 12, push rod 13.Piston set 12, push rod 13 in cylindrical shell 11, piston 12 is arranged on push rod 13 front end and and is slidably matched between the inwall of cylindrical shell 11.Part between the outlet of cylindrical shell 11 and piston 12 forms medicinal liquid cavity 14, is loaded with the anticoagulant of fixed capacity in medicinal liquid cavity 14.The outer wall of medicinal liquid cavity 14 is provided with graduated scale, is convenient to control use anticoagulant dose.Joint for fittings with internal threads is fixedly connected with in cylindrical shell 11 exit.Push anticoagulant for the ease of medical personnel, be also provided with the portion that supports 15 of annular in the end of cylindrical shell 11 or middle part.
Described sealing cap comprises fastening base 2, plug 3, sheath 4, and fastening base 2 and sheath 4 are rigid plastics material.As shown in Figure 2, the bottom of described fastening base 2 is provided with the external screw thread matched with the female thread of injection tube outlet connection.Fastening base 2 center has stepped hole, and described stepped hole comprises the bellmouth and superposed cylindrical hole that are positioned at bottom; Bellmouth is lower thick upper thin type, and its inwall matches with the outer wall of injection tube 1 conical outlet.Be arranged circumferentially draw-in groove at the middle part of fastening base 2, sheath 4 be provided with the boss matched with groove, by cooperatively interacting of draw-in groove and boss fastening base 2 has been fixedly connected with sheath 4.
Plug 3 to be arranged in cylindrical hole and clamped by fastened seat 2 and sheath 4.Plug 3 bottom centre is provided with hemispheric sealing projection, and sealing projection matches with the inwall of injection tube 1 conical outlet.By bellmouth and sealing projection to the outer wall of injection tube 1 conical outlet, inwall dual-seal, greatly strengthen sealing effectiveness, effectively maintain the aseptic of anticoagulant.
The top of plug 3 is the closure part of taper type, and its end is through the centre bore of sheath 4; Closure part outer wall matches with the inwall of remaining needle anticoagulant entrance, and its upper surface also offers pit.Closure part is used for the shutoff of remaining needle anticoagulant entrance; During use, remaining needle anticoagulant entrance being filled in closure part 5, there is deformation, is convenient to the insertion of closure part in pit immediately.
Sheath 4 top also offers the female thread matched with the external screw thread of remaining needle anticoagulant entrance, after remaining needle anticoagulant entrance is inserted in closure part, then realizes effective shutoff by threaded engagement.
Embodiment 2
The present embodiment and embodiment 1 structure substantially similar, its difference is:
For being threaded between fastening base 2 with sheath 4.The top of fastening base 2 is provided with external screw thread, sheath 4 is provided with the female thread matched with external screw thread, by cooperatively interacting between internal and external threads fastening base 2 is fixedly connected with sheath 4.
Embodiment 3
The present embodiment and embodiment 1 structure substantially similar, its difference is:
As shown in Figure 3, described plug 3 upper surface is plane, is clamped in the gap between fastening base 2 and sheath 4.The center of sheath 4 is provided with outstanding block head.Block head is the taper type of lower thick upper thin, and its outer wall matches with the conical inboard wall of remaining needle anticoagulant entrance, and its length is greater than the length of the closure part in embodiment 1.
Embodiment 4
The present embodiment and embodiment 3 structure substantially similar, its difference is:
For being threaded between fastening base 2 with sheath 4.The top of fastening base 2 is provided with external screw thread, sheath 4 is provided with the female thread matched with external screw thread, by cooperatively interacting between internal and external threads fastening base 2 is fixedly connected with sheath 4.
Use procedure of the present utility model is:
To outward winding syringe sealing cap, the conical outlet of injection tube inserted remaining needle anticoagulant entrance and joint and anticoagulant entrance are screwed, anticoagulant being pushed in patient body, injection tube of then outwarding winding; Sealing cap is inserted remaining needle anticoagulant entrance to screw, namely complete the shutoff to remaining needle anticoagulant entrance.
Claims (10)
1. a venous detaining needle anticoagulant pre-encapsulated injector, comprise injection tube (1) and sealing cap, described injection tube (1) comprises cylindrical shell (11), piston (12), push rod (13), it is characterized in that: for being loaded with the medicinal liquid cavity (14) of anticoagulant between the outlet of described cylindrical shell (11) and piston (12); The exit of cylindrical shell (11) is fixedly connected with joint for fittings with internal threads (5);
Described sealing cap comprises the fastening base (2) and sheath (4) that are fixedly linked, arranges the plug (3) being used for shutoff cylindrical shell (11) and exporting in the gap of fastening base (2) and sheath (4); Described fastening base (2) bottom is provided with the external screw thread matched with joint (5) female thread, is also provided with the bellmouth exported for sealing injection cylinder (1) in fastening base (2); Described sheath (4) top is provided with the female thread matched with the external screw thread of remaining needle anticoagulant entrance; Described sealing cap is also provided with the projection for shutoff remaining needle anticoagulant entrance.
2. a kind of venous detaining needle anticoagulant pre-encapsulated injector according to claim 1, is characterized in that: pass through welding, bonding, clamping between described fastening base (2) and sheath (4) or be threaded to be fixedly linked.
3. a kind of venous detaining needle anticoagulant pre-encapsulated injector according to claim 2, is characterized in that: described fastening base (2) is arranged circumferentially the draw-in groove matched with the boss of sheath (4) bottom.
4. a kind of venous detaining needle anticoagulant pre-encapsulated injector according to claim 2, is characterized in that: described fastening base (2) is provided with the female thread matched with the external screw thread of sheath (4).
5. a kind of venous detaining needle anticoagulant pre-encapsulated injector according to claim 1, is characterized in that: described plug (3) bottom is also provided with the sealing projection matched with the inwall of injection tube (1) bell.
6. a kind of venous detaining needle anticoagulant pre-encapsulated injector according to claim 1, is characterized in that: the top of described plug (3) arranges protruding closure part, and closure part is through the centre bore of sheath (4); The outer wall of closure part matches with the inwall of remaining needle anticoagulant entrance.
7. a kind of venous detaining needle anticoagulant pre-encapsulated injector according to claim 6, is characterized in that: the upper surface of described closure part offers pit.
8. a kind of venous detaining needle anticoagulant pre-encapsulated injector according to claim 1, is characterized in that: the center of described sheath (4) arranges protruding block head, and the outer wall of block head matches with the inwall of remaining needle anticoagulant entrance.
9. a kind of venous detaining needle anticoagulant pre-encapsulated injector according to any one of claim 1 ~ 8, is characterized in that: the end of described cylindrical shell (11) or middle part are also provided with the portion that supports (15) of annular.
10. a kind of venous detaining needle anticoagulant pre-encapsulated injector according to any one of claim 1 ~ 8, is characterized in that: the outer wall of described cylindrical shell (11) is provided with graduated scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520106013.7U CN204637175U (en) | 2015-02-13 | 2015-02-13 | A kind of venous detaining needle anticoagulant pre-encapsulated injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520106013.7U CN204637175U (en) | 2015-02-13 | 2015-02-13 | A kind of venous detaining needle anticoagulant pre-encapsulated injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204637175U true CN204637175U (en) | 2015-09-16 |
Family
ID=54089958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520106013.7U Expired - Fee Related CN204637175U (en) | 2015-02-13 | 2015-02-13 | A kind of venous detaining needle anticoagulant pre-encapsulated injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204637175U (en) |
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2015
- 2015-02-13 CN CN201520106013.7U patent/CN204637175U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20170213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |